Artifacts: Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.Phantoms, Imaging: Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)Image Enhancement: Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.Algorithms: A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.Image Processing, Computer-Assisted: A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Image Interpretation, Computer-Assisted: Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.Radiographic Image Enhancement: Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.Imaging, Three-Dimensional: The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.Sensitivity and Specificity: Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)Signal Processing, Computer-Assisted: Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.Magnetic Resonance Imaging: Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.Signal-To-Noise Ratio: The comparison of the quantity of meaningful data to the irrelevant or incorrect data.Echo-Planar Imaging: A type of MAGNETIC RESONANCE IMAGING that uses only one nuclear spin excitation per image and therefore can obtain images in a fraction of a second rather than the minutes required in traditional MRI techniques. It is used in a variety of medical and scientific applications.Cone-Beam Computed Tomography: Computed tomography modalities which use a cone or pyramid-shaped beam of radiation.Subtraction Technique: Combination or superimposition of two images for demonstrating differences between them (e.g., radiograph with contrast vs. one without, radionuclide images using different radionuclides, radiograph vs. radionuclide image) and in the preparation of audiovisual materials (e.g., offsetting identical images, coloring of vessels in angiograms).Motion: Physical motion, i.e., a change in position of a body or subject as a result of an external force. It is distinguished from MOVEMENT, a process resulting from biological activity.Archaeology: The scientific study of past societies through artifacts, fossils, etc.Radiographic Image Interpretation, Computer-Assisted: Computer systems or networks designed to provide radiographic interpretive information.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Metals: Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)Equipment Design: Methods of creating machines and devices.Contrast Media: Substances used to allow enhanced visualization of tissues.Fourier Analysis: Analysis based on the mathematical function first formulated by Jean-Baptiste-Joseph Fourier in 1807. The function, known as the Fourier transform, describes the sinusoidal pattern of any fluctuating pattern in the physical world in terms of its amplitude and its phase. It has broad applications in biomedicine, e.g., analysis of the x-ray crystallography data pivotal in identifying the double helical nature of DNA and in analysis of other molecules, including viruses, and the modified back-projection algorithm universally used in computerized tomography imaging, etc. (From Segen, The Dictionary of Modern Medicine, 1992)Brain: The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.Cardiac-Gated Imaging Techniques: Timing the acquisition of imaging data to specific points in the cardiac cycle to minimize image blurring and other motion artifacts.Magnetic Resonance Angiography: Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.Respiratory-Gated Imaging Techniques: Timing the acquisition of imaging data to specific points in the breathing cycle to minimize image blurring and other motion artifacts. The images are used diagnostically and also interventionally to coordinate radiation treatment beam on/off cycles to protect healthy tissues when they move into the beam field during different times in the breathing cycle.Movement: The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior.Diagnostic Errors: Incorrect diagnoses after clinical examination or technical diagnostic procedures.Wavelet Analysis: Signal and data processing method that uses decomposition of wavelets to approximate, estimate, or compress signals with finite time and frequency domains. It represents a signal or data in terms of a fast decaying wavelet series from the original prototype wavelet, called the mother wavelet. This mathematical algorithm has been adopted widely in biomedical disciplines for data and signal processing in noise removal and audio/image compression (e.g., EEG and MRI).Computer Simulation: Computer-based representation of physical systems and phenomena such as chemical processes.Radiography, Abdominal: Radiographic visualization of the body between the thorax and the pelvis, i.e., within the peritoneal cavity.Equipment Failure Analysis: The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.Amplifiers, Electronic: Electronic devices that increase the magnitude of a signal's power level or current.Tomography, Emission-Computed, Single-Photon: A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.Prostheses and Implants: Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.False Positive Reactions: Positive test results in subjects who do not possess the attribute for which the test is conducted. The labeling of healthy persons as diseased when screening in the detection of disease. (Last, A Dictionary of Epidemiology, 2d ed)Surgical Instruments: Hand-held tools or implements used by health professionals for the performance of surgical tasks.Whole Body Imaging: The creation of a visual display of the inside of the entire body of a human or animal for the purposes of diagnostic evaluation. This is most commonly achieved by using MAGNETIC RESONANCE IMAGING; or POSITRON EMISSION TOMOGRAPHY.Fixatives: Agents employed in the preparation of histologic or pathologic specimens for the purpose of maintaining the existing form and structure of all of the constituent elements. Great numbers of different agents are used; some are also decalcifying and hardening agents. They must quickly kill and coagulate living tissue.Electroencephalography: Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.Ultrasonography: The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.Multidetector Computed Tomography: Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology.History, Ancient: The period of history before 500 of the common era.Copyright: It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)Computer Security: Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.Confidentiality: The privacy of information and its protection against unauthorized disclosure.Privacy: The state of being free from intrusion or disturbance in one's private life or affairs. (Random House Unabridged Dictionary, 2d ed, 1993)Licensure: The legal authority or formal permission from authorities to carry on certain activities which by law or regulation require such permission. It may be applied to licensure of institutions as well as individuals.Genetic Privacy: The protection of genetic information about an individual, family, or population group, from unauthorized disclosure.

Referenceless interleaved echo-planar imaging. (1/3124)

Interleaved echo-planar imaging (EPI) is an ultrafast imaging technique important for applications that require high time resolution or short total acquisition times. Unfortunately, EPI is prone to significant ghosting artifacts, resulting primarily from system time delays that cause data matrix misregistration. In this work, it is shown mathematically and experimentally that system time delays are orientation dependent, resulting from anisotropic physical gradient delays. This analysis characterizes the behavior of time delays in oblique coordinates, and a new ghosting artifact caused by anisotropic delays is described. "Compensation blips" are proposed for time delay correction. These blips are shown to remove the effects of anisotropic gradient delays, eliminating the need for repeated reference scans and postprocessing corrections. Examples of phantom and in vivo images are shown.  (+info)

Why and how is soft copy reading possible in clinical practice? (2/3124)

The properties of the human visual system (HVS) relevant to the diagnostic process are described after a brief introduction on the general problems and advantages of using soft copy for primary radiology interpretations. At various spatial and temporal frequencies the contrast sensitivity defines the spatial resolution of the eye-brain system and the sensitivity to flicker. The adaptation to the displayed radiological scene and the ambient illumination determine the dynamic range for the operation of the HVS. Although image display devices are determined mainly by state-of-the-art technology, analysis of the HVS may suggest technical characteristics for electronic displays that will help to optimize the display to the operation of the HVS. These include display size, spatial resolution, contrast resolution, luminance range, and noise, from which further consequences for the technical components of a monitor follow. It is emphasized that routine monitor quality control must be available in clinical practice. These image quality measures must be simple enough to be applied as part of the daily routine. These test instructions might also serve as elements of technical acceptance and constancy tests.  (+info)

The effect of the antiscatter grid on full-field digital mammography phantom images. (3/3124)

Computer Analysis of Mammography Phantom Images (CAMPI) is a method for making quantitative measurements of image quality. This article reports on a recent application of this method to a prototype full-field digital mammography (FFDM) machine. Images of a modified ACR phantom were acquired on the General Electric Diagnostic Molybdenum Rhodium (GE-DMR) FFDM machine at a number of x-ray techniques, both with and without the scatter reduction grid. The techniques were chosen so that one had sets of grid and non-grid images with matched doses (200 mrads) and matched gray-scale values (1500). A third set was acquired at constant 26 kVp and varying mAs for both grid conditions. Analyses of the images yielded signal-to-noise-ratio (SNR), contrast and noise corresponding to each target object, and a non-uniformity measure. The results showed that under conditions of equal gray-scale value the grid images were markedly superior, albeit at higher doses than the non-grid images. Under constant dose conditions, the non-grid images were slightly superior in SNR (7%) but markedly less uniform (60%). Overall, the grid images had substantially greater contrast and superior image uniformity. These conclusions applied to the whole kVp range studied for the Mo-Mo target filter combination and 4 cm of breast equivalent material of average composition. These results suggest that use of the non-grid technique in digital mammography with the GE-DMR-FFDM unit, is presently not warranted. With improved uniformity correction procedure, this conclusion would change and one should be able to realize a 14% reduction in patient dose at the same SNR by using a non-grid technique.  (+info)

A new filtering algorithm for medical magnetic resonance and computer tomography images. (4/3124)

Inner views of tubular structures based on computer tomography (CT) and magnetic resonance (MR) data sets may be created by virtual endoscopy. After a preliminary segmentation procedure for selecting the organ to be represented, the virtual endoscopy is a new postprocessing technique using surface or volume rendering of the data sets. In the case of surface rendering, the segmentation is based on a grey level thresholding technique. To avoid artifacts owing to the noise created in the imaging process, and to restore spurious resolution degradations, a robust Wiener filter was applied. This filter working in Fourier space approximates the noise spectrum by a simple function that is proportional to the square root of the signal amplitude. Thus, only points with tiny amplitudes consisting mostly of noise are suppressed. Further artifacts are avoided by the correct selection of the threshold range. Afterwards, the lumen and the inner walls of the tubular structures are well represented and allow one to distinguish between harmless fluctuations and medically significant structures.  (+info)

Computed radiography dual energy subtraction: performance evaluation when detecting low-contrast lung nodules in an anthropomorphic phantom. (5/3124)

A dedicated chest computed radiography (CR) system has an option of energy subtraction (ES) acquisition. Two imaging plates, rather than one, are separated by a copper filter to give a high-energy and low-energy image. This study compares the diagnostic accuracy of conventional computed radiography to that of ES obtained with two radiographic techniques. One soft tissue only image was obtained at the conventional CR technique (s = 254) and the second was obtained at twice the radiation exposure (s = 131) to reduce noise. An anthropomorphic phantom with superimposed low-contrast lung nodules was imaged 53 times for each radiographic technique. Fifteen images had no nodules; 38 images had a total of 90 nodules placed on the phantom. Three chest radiologists read the three sets of images in a receiver operating characteristic (ROC) study. Significant differences in Az were only found between (1) the higher exposure energy subtracted images and the conventional dose energy subtracted images (P = .095, 90% confidence), and (2) the conventional CR and the energy subtracted image obtained at the same technique (P = .024, 98% confidence). As a result of this study, energy subtracted images cannot be substituted for conventional CR images when detecting low-contrast nodules, even when twice the exposure is used to obtain them.  (+info)

Filter-based coded-excitation system for high-speed ultrasonic imaging. (6/3124)

We have recently presented a new algorithm for high-speed parallel processing of ultrasound pulse-echo data for real-time three-dimensional (3-D) imaging. The approach utilizes a discretized linear model of the echo data received from the region of interest (ROI) using a conventional beam former. The transmitter array elements are fed with binary codes designed to produce distinct impulse responses from different directions in ROI. Image reconstruction in ROI is achieved with a regularized pseudoinverse operator derived from the linear receive signal model. The reconstruction operator can be implemented using a transversal filter bank with every filter in the bank designed to extract echoes from a specific direction in the ROI. The number of filters in the bank determines the number of image lines acquired simultaneously. In this paper, we present images of a cyst phantom reconstructed based on our formulation. A number of issues of practical significance in image reconstruction are addressed. Specifically, an augmented model is introduced to account for imperfect blocking of echoes from outside the ROI. We have also introduced a column-weighting algorithm for minimizing the number of filter coefficients. In addition, a detailed illustration of a full image reconstruction using subimage acquisition and compounding is given. Experimental results have shown that the new approach is valid for phased-array pulse-echo imaging of speckle-generating phantoms typically used in characterizing medical imaging systems. Such coded-excitation-based image reconstruction from speckle-generating phantoms, to the best of our knowledge, have not been reported previously.  (+info)

The size and fibre composition of the corpus callosum with respect to gender and schizophrenia: a post-mortem study. (7/3124)

In this study the cross-sectional area (in n = 14 female controls, 15 male controls, 11 female patients with schizophrenia, 15 male patients with schizophrenia) and fibre composition (in n = 11 female controls, 10 male controls, 10 female patients with schizophrenia, 10 male patients with schizophrenia) of the corpus callosum in post-mortem control and schizophrenic brains was examined. A gender x diagnosis interaction (P = 0.005) was seen in the density of axons in all regions of the corpus callosum except the posterior midbody and splenium. Amongst controls, females had greater density than males; in patients with schizophrenia this difference was reversed. A reduction in the total number of fibres in all regions of the corpus callosum except the rostrum was observed in female schizophrenic patients (P = 0.006; when controlling for brain weight, P = 0.053). A trend towards a reduced cross-sectional area of the corpus callosum was seen in schizophrenia (P = 0.098); however, this is likely to be no more than a reflection of an overall reduction in brain size. With age, all subregions of the corpus callosum except the rostrum showed a significant reduction in cross-sectional area (P = 0.018) and total fibre number (P = 0.002). These findings suggest that in schizophrenia there is a subtle and gender-dependent alteration in the forebrain commissures that may relate to the deviations in asymmetry seen in other studies, but the precise anatomical explanation remains obscure.  (+info)

DENSE: displacement encoding with stimulated echoes in cardiac functional MRI. (8/3124)

Displacement encoding with stimulated echoes (DENSE) was developed for high-resolution myocardial displacement mapping. Pixel phase is modulated by myocardial displacement and data spatial resolution is limited only by pixel size. 2D displacement vector maps were generated for the systolic action in canines with 0.94 x 1.9 mm nominal in-plane resolution and 2.3 mm/pi displacement encoding. A radial strain of 0.208 was measured across the free left ventricular wall over 105 ms during systole. DENSE displacement maps require small first-order gradient moments for encoding. DENSE magnitude images exhibit black-blood contrast which allows for better myocardial definition and reduced motion-related artifacts.  (+info)

A fast, powerful and stable filter based on combined wavelet and Fourier analysis for the elimination of horizontal or vertical stripes in images is presented and compared with other types of destriping filters. Strict separation between artifacts and original features allowing both, suppression of the unwanted structures and high degree of preservation of the original image information is endeavoured. The results are validated by visual assessments, as well as by quantitative estimation of the image energy loss. The capabilities and the performance of the filter are tested on a number of case studies related to applications in tomographic imaging. The case studies include (i) suppression of waterfall artifacts in electron microscopy images based on focussed ion beam nanotomography, (ii) removal of different types of ring artifacts in synchrotron based X-ray microtomography and (iii) suppression of horizontal stripe artifacts from phase projections in grating interferometry. ...
The purpose of this study was to develop, implement and evaluate a dedicated metal artefact reduction (MAR) method for flat-detector CT (FDCT). The algorithm uses the multidimensional raw data space to calculate surrogate attenuation values for the original metal traces in the raw data domain. The metal traces are detected automatically by a three-dimensional, threshold-based segmentation algorithm in an initial reconstructed image volume, based on twofold histogram information for calculating appropriate metal thresholds. These thresholds are combined with constrained morphological operations in the projection domain. A subsequent reconstruction of the modified raw data yields an artefact-reduced image volume that is further processed by a combining procedure that reinserts the missing metal information. For image quality assessment, measurements on semi- anthropomorphic phantoms containing metallic inserts were evaluated in terms of CT value accuracy, image noise and spatial resolution before ...
A circuit and method for compensating for an electrode motion artifact in which the electrode motion artifact is generated because impedance between a subject and a measuring electrode changes during measurement of the subjects biosignal, and the electrode motion artifact can be differentially measured and an electrocardiogram signal can be compensated by introducing a predetermined voltage or an electric current to the subject. A circuit and method for compensating electrode motion artifact, which can differentially measure the difference information between impedance components by introducing a predetermined voltage or electric current to a subject, in association with the electrode motion artifact. In this instance, the impedance component is a component of electrode motion artifact and the electrode motion artifact is generated when measuring a biosignal.
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PURPOSE: To evaluate two commercial CT metal artifact reduction (MAR) algorithms for use in proton treatment planning in the head and neck (H&N) area.. METHODS: An anthropomorphic head phantom with removable metallic implants (dental fillings or neck implant) was CT-scanned to evaluate the O-MAR (Philips) and the iMAR (Siemens) algorithms. Reference images were acquired without any metallic implants in place. Water equivalent thickness (WET) was calculated for different path directions and compared between image sets. Images were also evaluated for use in proton treatment planning for parotid, tonsil, tongue base, and neck node targets. The beams were arranged so as to not traverse any metal prior to the target, enabling evaluation of the impact on dose calculation accuracy from artifacts surrounding the metal volume. Plans were compared based on γ analysis (1 mm distance-to-agreement/1% difference in local dose) and dose volume histogram metrics for targets and organs at risk (OARs). Visual ...
PURPOSE: To evaluate two commercial CT metal artifact reduction (MAR) algorithms for use in proton treatment planning in the head and neck (H&N) area.. METHODS: An anthropomorphic head phantom with removable metallic implants (dental fillings or neck implant) was CT-scanned to evaluate the O-MAR (Philips) and the iMAR (Siemens) algorithms. Reference images were acquired without any metallic implants in place. Water equivalent thickness (WET) was calculated for different path directions and compared between image sets. Images were also evaluated for use in proton treatment planning for parotid, tonsil, tongue base, and neck node targets. The beams were arranged so as to not traverse any metal prior to the target, enabling evaluation of the impact on dose calculation accuracy from artifacts surrounding the metal volume. Plans were compared based on γ analysis (1 mm distance-to-agreement/1% difference in local dose) and dose volume histogram metrics for targets and organs at risk (OARs). Visual ...
Right: Illustration of the "twinkling artifact." Shown in A and B are ultrasound images of a 2-mm stone inserted into an in vivo kidney. (A) scan in B-mode only; (B) color Doppler engaged. Note that the twinkling artifact shows a well defined stone (circled) while the B-mode image shows no obvious indication of a stone. (C) a stone is placed near a blood vessel and imaged in vivo; note that it is easy to distinguish between the stone exhibiting the twinkling artifact and regular blood flow. (D) photograph of the stone placed in the kidney ...
acquisition data storage and communication provide for the collection of reliable and useful inhome physiological data Artifacts arising from environmental experimental and physiological factors degrade signal quality and render the affected part of the signal useless The magnitude and frequency of these artifacts significantly increases when data collection is moved from the clinic into the home Signal processing advances have brought about significant improvement in artifact removal over the last number of years This paper reviews the physiological signals most likely to be recorded in the home documenting the artifacts which occur most frequently and which have the largest degrading effect A detailed analysis of current artifact removal techniques will then be presented An evaluation of the advantages and disadvantages of each of the proposed artifact detection and removal techniques with particular application to the personal healthcare domain is provided More Info Published in IEEE ...
ObjectiveThe objective of this study was to assess the accuracy of the quantitative measurements obtained using dual-energy computed tomography with metal artifact reduction software (MARS).MethodsDual-energy computed tomography scans (fast kV-switching) are performed on a phantom, by varying the nu
TY - CHAP. T1 - Reduction of movement artefacts in comparative 3D magnetic resonance (MR) breast imaging. AU - Undrill, Peter Edward. AU - Redpath, Thomas William. AU - Gilbert, Fiona Jane. PY - 1996. Y1 - 1996. KW - image registration. KW - magnetic resonance imaging. KW - breast imaging. KW - principal axes. KW - orthogonal polynomials. KW - pricipal axes. M3 - Chapter. SN - 0-8194-2085-9 VL - 2710. T3 - Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE). SP - 922. EP - 930. BT - Medical Imaging 1996. A2 - Loew, M H. A2 - Hanson, K M ER - ...
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A new method to reduce artifacts (MAR), produced by high-density objects, especially metal implants (MI), in X-ray CBCT is presented. MIs located in the field of view (FOV) result in artifacts influencing clinical diagnostics and treatments. The novel method reduces metal artifacts by virtually replacing MIs by tissue objects of the same shape. This corrected data can be reconstructed with significantly reduced artifacts. After reconstruction, the segmented 3D MIs were re-inserted into the corrected 3D volume. The method was developed for mobile C-arm CBCTs, where misalignments between original 2D data and forward projections must be adjusted before correction ...
Color interpolation is still the most used method for image upsampling, since it offers the simplest and therefore fastest algorithms. However, in recent years research concentrated on other techniques to counter the shortcomings of interpolation techniques (like color artifacts or the fact that interpolation does not take statistics into account), while interpolation itself has ceased to be an active research topic. Still, current interpolation techniques can be improved. Especially it should be possible to avoid color artifacts by carefully choosing the correct interpolation schemes. In this paper we derive mathematical constraints which need to be fulfilled to reach an artifact-free interpolation, and use these to develop an interpolation method which is basically a self-configuring cubic spline.. ...
Background: The aim of this study was to determine the impact of respiratory motion correction on SPECT MPI and on defect detection using a phantom assembly. Methods: SPECT/CT data were acquired using an anthropomorphic phantom with inflatable lungs and with an ECG beating and moving cardiac compartment. The heart motion followed the respiratory pattern in the cranio-caudal direction to simulate normal or deep breathing. Small or large transmural defects were inserted into the myocardial wall of the left ventricle. SPECT/CT images were acquired for each of the four respiratory phases, from exhale to inhale. A respiratory motion correction was applied using an image-based method with transformation parameters derived from the SPECT data by a non-rigid registration algorithm. A report on defect detection from two physicians and a quantitative analysis on MPI data were performed before and after applying motion correction. Results: Respiratory motion correction eliminated artifacts present in the ...
3-D optical coherence tomography (OCT) has been extensively investigated as a potential screening and/or surveillance tool for Barretts esophagus (BE). Understanding and correcting motion artifact may improve image interpretation. In this work, the motion trace was analyzed to show the physiological origin (respiration and heart beat) of the artifacts. Results showed that increasing balloon pressure did not sufficiently suppress the physiological motion artifact. An automated registration algorithm was designed to correct such artifacts. The performance of the algorithm was evaluated in images of normal porcine esophagus and demonstrated in images of BE in human patients.. ©2011 Optical Society of America. Full Article , PDF Article ...
The spinal cord is the main pathway for information between the central and the peripheral nervous systems. Non-invasive functional MRI offers the possibility of studying spinal cord function and central sensitisation processes. However, imaging neural activity in the spinal cord is more difficult than in the brain. A significant challenge when dealing with such data is the influence of physiological noise (primarily cardiac and respiratory), and currently there is no standard approach to account for these effects. We have previously studied the various sources of physiological noise for spinal cord fMRI at 1.5T and proposed a physiological noise model (PNM) (Brooks et al., 2008). An alternative de-noising strategy, selective averaging filter (SAF), was proposed by Deckers et al. (2006). In this study we reviewed and implemented published physiological noise correction methods at higher field (3T) and aimed to find the optimal models for gradient-echo-based BOLD acquisitions. Two general techniques were
To develop a no-reference video quality model, it is important to know how the perceived strengths of artifacts are related to their physical strengths and to the perceived annoyance. When more than one artifact is present, it is important to know whether and how its corresponding perceived strength depends on the presence of other artifacts and how perceived strengths combine to determine the overall annoyance. We study the characteristics of different types of artifacts commonly found in compressed videos. We create artifact signals predominantly perceived as blocky, blurry, ringing, and noisy and combine them in various proportions. Then, we perform two psychophysical experiments to independently measure the strength and overall annoyance of these artifact signals when presented alone or in combination. We analyze the data from these experiments and propose models for the overall annoyance based on combinations of the perceptual strengths of the individual artifact signals. We also test the ...
studies of the past are enhanced when an artifact is clearly associated with an intact archaeological context. Artifacts which lack a defined archaeological findspot or provenience have a greater potential to undermine the integrity of archaeological heritage in view of the possibility of admitting suspect artifacts into archaeological heritage. Looting is an illegal act that breaks the association between artifact and context. A looted artifact may be considered stolen property. Therefore, archaeological heritage that is looted is more likely to travel through illicit channels of distribution and/or exportation, which involve processes that may mask or confuse the identification of the artifact or its true findspot ...
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Click for a brief explanation of some of the most common vision correction procedures offered at Underwood Optical in Cortez, Colorado.
Click for a brief explanation of some of the most common vision correction procedures offered at Plymouth Family Eyecare in Plymouth, Indiana.
The aim of this study was to assess the potential of monoenergetic computed tomography (CT) images to reduce beam hardening artifacts in comparison to standard CT images of dental restoration on dental post-mortem CT (PMCT). Thirty human decedents (15 male, 58 ± 22 years) with dental restorations were examined using standard single-energy CT (SECT) and dual-energy CT (DECT). DECT data were used to generate monoenergetic CT images, reflecting the X-ray attenuation at energy levels of 64, 69, 88 keV, and at an individually adjusted optimal energy level called OPTkeV. Artifact reduction and image quality of SECT and monoenergetic CT were assessed objectively and subjectively by two blinded readers. Subjectively, beam artifacts decreased visibly in 28/30 cases after monoenergetic CT reconstruction. Inter- and intra-reader agreement was good (k = 0.72, and k = 0.73 respectively). Beam hardening artifacts decreased significantly with increasing monoenergies (repeated-measures ANOVA p , 0.001). ...
title,Fossil File Formats,/title, ,h1 align=center, Fossil File Formats ,/h1, The global state of a fossil repository is kept simple so that it can endure in useful form for decades or centuries. A fossil repository is intended to be readable, searchable, and extensible by people not yet born. The global state of a fossil repository is an unordered set of ,i,artifacts,/i,. An artifact might be a source code file, the text of a wiki page, part of a trouble ticket, or one of several special control artifacts used to show the relationships between other artifacts within the project. Each artifact is normally represented on disk as a separate file. Artifacts can be text or binary. In addition to the global state, each fossil repository also contains local state. The local state consists of web-page formatting preferences, authorized users, ticket display and reporting formats, and so forth. The global state is shared in common among all repositories for the same project, whereas the local state is ...
ePortfolio is a repository for digital artifacts that represent your learning. You may upload or create artifacts on any number of topics and at any stage of completion. An artifact may be a document, graphic, audio file, video file, presentation, or other form of digital media. You may upload files from a personal computer or storage device; import items from a course; link to a website; create an HTML file; fill out a form created by your institution; or record an audio file directly within ePortfolio.. Instead of viewing your artifacts as complete examples, consider them as ongoing projects and continuously revise them as you develop new skills and understandings. This way your portfolio is a true reflection of your skills and achievements.. ...
BACKGROUND: Magnetic resonance angiogram (MRA) of the brain is a widely employed non-invasive test to diagnose aneurysms. However, its overall accuracy is less than digital subtraction angiography and is prone to give false-positive or false-negative results. False-negative results can be seen with hemorrhage, lipoma, dermoid, posterior lobe of the pituitary gland, and the flow artifacts. PURPOSE: To describe the findings associated with false aneurysms in the anterior communicating artery on the time of flight MRA and review the physical principles behind this artifact. MATERIAL AND METHODS: This short series comprises of four patients whose MRA showed suspicious aneurysms in the region of the anterior communicating artery (ACOM) on time of flight MRA. RESULTS: Two patients underwent catheter angiogram and the other two patients had computed tomography angiogram. None of these cases proved to have aneurysms and normal anterior communicating arteries were seen in all the patients. The findings on the MR
In fMRI, activation is detected because of the blood oxygen level-dependent (BOLD) effect as deoxyhemoglobin concentration changes in regions of increased neuronal activity. T2*-weighted images are used to detect the BOLD effects in functional MR imaging (fMRI) mapping. However, the same T2* weighting, which forms the basis for signal intensity on fMRI, is also the source of potential susceptibility artifacts. The BOLD effect may not be detected in regions of the brain with large susceptibility artifacts, caused by internal static local field gradients that distort the image or attenuate the signal intensity (1-4). Susceptibility artifacts sufficient to reduce the BOLD effect occur at tissue interfaces such as that between air and brain, and affect the sensitivity of fMRI in the inferior lateral temporal lobes (including part of fusiform gyrus) and the inferior medial frontal lobes (medial orbital gyri and gyrus rectus) (2, 4, 5). In addition, susceptibility artifacts may occur secondary to ...
This quilt was for a trunk show for my work. It is one of my favorites I have done so far just because I am so in love with the fabric. The fabric line I used was "Garden Grove by Kim Diehl". The pattern is in a book called "Simply Fat Quarters" by Its so Emma. The pattern was called "Retreat". In case you are interested in checking out this quilt it is at Elaines Quilt Block in Cottonwood Heights, UT. There are a bunch of other quilts on display not only for this quilt show we did but also just a lot of lovely quilts around the shop. There are usually kits available for all of the quilts on display. I love how rich the colors are. This is a very fun pattern. The quilting that was done on this quilt is absolutely exquisite. I am so happy with how this quilt turned out. I brought 2 more quilts for this specific trunk show but unfortunately didnt take a picture before they were hung in the store. I look forward to bringing this quilt home ...
Examples of shared artifacts include Watson & Cricks Tinker-Toy DNA model. Each scientist would work on the model separately, then use grad students to carry the model around to his partner to express certain ideas. Both Compaq Computer and Southwest Airlines were reportedly established after their founders wrote their ideas down together on a table napkin, another shared artifact.. Both of these examples show an important factor in shared artifacts - if the shared artifact is not constrained then it will be too large or complex for the group to reach some measure of completion. Finishing the shared artifact really helps establish trust and the connections between the participants.. A shared artifact is also useful because flooding someone with information and terms gives no assurance that the recipient has gained knowledge of the subject. Instead, the act of creation confirms to both parties that the knowledge was successfully assimilated.. Another advantage to creating a shared artifact is ...
Autor: Kim, Kwang In et al.; Genre: Bericht; Online veröffentlicht: 2011; Open Access; Titel: Efficient Learning-based Image Enhancement : Application to|br/|Compression Artifact Removal and Super-resolution
MIME-version: 1.0 X-Mailer: Unknown (No Version) Content-type: multipart/alternative; boundary=Boundary_(ID_5HQm6aniGbkbsRDFTPmCng) --Boundary_(ID_5HQm6aniGbkbsRDFTPmCng) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Hello all. I could really use some help. Today, the pathologist called to say that she is seeing an artifact on the tissue. It looks like clusters of fine PCP organisms, only that they are not. Like someone took a very fine tip black marker and made circles around the cells. She said it is not on every slide. The slides she had me check were prostate needle bxs and an antrum bx. The only change in our routine has been that we are demonstrating a recycling system for alcohol and Xylene. I have not used the recycled product on the tissue processor or the H&E autostainer, but I have placed the recycled Xylene in our glass Coverslipper. I appreciate any and all comments. Thank you. Ryan Allan Memorial --Boundary_(ID_5HQm6aniGbkbsRDFTPmCng) Content-type: ...
Meaning what? -----Original Message----- From: David Orchard [mailto:[email protected]] Sent: Thursday, October 10, 2002 10:32 PM To: Cutler, Roger (RogerCutler); [email protected] Subject: RE: Artifacts Roger, The term artifact has been used in software for quite some time. Cheers, Dave -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Cutler, Roger (RogerCutler) Sent: Thursday, October 10, 2002 6:35 PM To: [email protected] Subject: Artifacts I would like to propose the following glossary entry: Artifact - 1) A remnant of something that is dead and gone, as in The shard of pottery found in the Yucatan was an artifact of the high Mayan civilization; 2) A defect or error in something otherwise regular and useful, as in Sixty cycle interference is a common artifact in monitors sited too close to power sources. Perhaps you can add other meanings for the word? I think you should if you are going to insist on using it. Listening to ...
Spinal cord functional imaging allows assessment of activity in primary synaptic connections made by sensory neurons relaying information about the state of the body. However, reported human data based on gradient-echo techniques have been largely inconsistent, with no clear patterns of activation emerging. One reason for this variability is the influence of physiological noise, which is typically not corrected for. By acquiring single-slice resting data from the spinal cord with a conventional gradient-echo EPI pulse sequence at TR=200 ms (critically sampled) and TR=3 s (under-sampled), we have characterised various sources of physiological noise. In 8 healthy subjects, the presence of physiologically dependent signal was explored using probabilistic independent component analysis (PICA). Based on the insights provided by PICA, we defined a new physiological noise model (PNM) based on retrospective image correction (RETROICOR), which uses independent physiological measurements taken from the subject to
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): We propose a new measure, the method noise, to evaluate and compare the performance of digital image denoising methods. We first compute and analyze this method noise for a wide class of denoising algorithms, namely the local smoothing filters. Second, we propose a new algorithm, the non local means (NL-means), based on a non local averaging of all pixels in the image. Finally, we present some experiments comparing the NL-means algorithm and the local smoothing filters.
Magnetic resonance imaging (MRI) is an imaging modality which provides good conditions for studies of flow and motion in the cardiovascular system. When using the phase contrast imaging technique, it is possible to perform velocity measurements in moving tissues and in blood. The acquired velocity data can be used for subsequent calculation of different parameters used for the assessment of cardiovascular function. These parameters rely on the accuracy and reproducibility of the velocity measurements.. This thesis includes an introduction to phase contrast imaging and how displacement artifacts may hamper the accuracy of velocity measurements using phase contrast imaging. A method for correction of this artifact was developed using the knowledge of the times at which velocity and spatial encoding are carried out in the pulse sequence. The elaboration of this correction method included modifications of a 3D phase contrast pulse sequence and development of post processing algorithms involving ...
Corneal image (Fig. 1.c) with the smoothed pilot epithelial layer boundary overlaid. The second derivative plot of the pilot epithelial layer boundary is used to detect the regions of low-SNR for the epithelium excluding the center half of the image (Region B). A second derivative below 0 indicates that there is a positive inflection in the second derivative, which should not occur for normal cornea and thus indicates that the SNR may be low at this location. A second derivative below 0 in Region B often occurs near the central artifact due to the central artifact removal step which results in a linear interpolation between both sides of the central artifact ...
Mechanical Engineering and Green Manufacturing: The Comparison of Isotropic and Anisotropic Diffusion Techniques for Image Denoising
A few additional notes concerning adverse effects of eddy currents. . . .. Multiple eddy currents with different time constants always coexist. The most rapid eddy currents (with time constants on the order of a few hundred micro(μ)-seconds) are present in the RF coil and shield. These are responsible for the Nyquist N/2 artifact described above. Intermediate term eddy currents (on the order 1-100 milliseconds) typically originate in the walls of the cryostat or outer radiation shields and produce shading artifacts on fast (turbo) spin echo or gradient echo images. Eddy currents with long time constants (hundreds of milliseconds) often derive from the inner cryogen shields and produce frequency drifts in the main field. This may be manifest on images as insufficient fat or water suppression.. Eddy currents are particularly problematic in localized spectroscopy, where they cause broadened resonances and distorted line shapes, especially in short TE experiments. At times they may completely ...
If you know what to look for, youll know what path to choose and how far down it to go.. Identifying and developing a sensitivity for the artifacts digital sharpening produces will help you choose a sharpening method and what settings to use during any stage of your sharpening workflow.. You can easily see the artifacts digital sharpening produces by overdoing it.. Here are the seven most common digital sharpening artifacts.. 1 Noise. 2 Exaggerated Texture. 3 Visible Light Halos. 4 Visible Dark Lines. 5 Loss of Highlight Detail. 6 Loss of Shadow Detail. 7 Increased Saturation. Each of these artifacts can be reduced in one or more ways.. Heres a list of options.. 1 Noise. Mask areas; consider an edge mask.. Raise Unsharp Masks Threshold.. Use High Pass sharpening.. 2 Exaggerated Texture. Mask areas; consider an edge mask.. Reduce Unsharp Masks Amount.. Use High Pass sharpening.. Filter the High Pass layer with blur or noise reduction.. 3 Visible Light Halos. Reduce Unsharp Masks Radius to ...
Definition of artifact in the Financial Dictionary - by Free online English dictionary and encyclopedia. What is artifact? Meaning of artifact as a finance term. What does artifact mean in finance?
Statewide program will celebrate and save the states inspiring historic items through a new micro-fundraising platformPHILADELPHIA - The Conservation Center for Art & Historic Artifacts (CCAHA) has opened a statewide call to libraries, museums, historic sites and archives to participate in a new program called Pennsylvanias Top 10 Endangered Artifacts. This initiative to save the states most significant artifacts seeks nominations of inspiring historic items
Bill Waters is a lucky man after stumbling across an old ledger book containing the original recipe for Dr. Pepper.. The Tulsa, Okla., man eventually discovered the book came from the Waco drugstore where Dr Pepper was invented and includes a recipe titled "D Peppers Pepsin Bitters.". When the 8 1/2-by-15 1/2 inch book of more than 360 pages goes up for auction at Dallas-based Heritage Auction Galleries on May 13, its expected to sell for between $50,000 to $75,000.. Waters discovered the book beneath a wooden medicine bottle crate in a Shamrock antiques store last summer. A couple months after buying it, he took a closer look as he prepared to sell it on eBay.. ...
News From Indian Country providing powwow and cultural information about Native American dance, music, Indigenous events and activities for Canada First Nations and United States tribes and Indian reservations.
The 3D representation of CT scans is widely used in medical application such as virtual endoscopy, plastic reconstructive surgery, dental implant planning systems and more. Metallic objects present in
Because of the recognized reduced accuracy of the stress ECG compared with stress imaging, many clinicians go directly to a stress imaging modality in the evaluation of patients with chest pain. From Bayesian analysis the value of the imaging modality over the stress ECG alone is highest in patients with medium probability for CAD. One of the drawbacks of performing stress perfusion imaging in this patient population is that scan artifacts may lead to further costly and unnecessary testing. A major source of artifact is soft tissue attenuation. Attenuation correction is a method that corrects for these artifacts on the stress images. It has the potential to increase the number of stress scans that can be interpreted as normal, thereby reducing procedure length, improving patient satisfaction and improving laboratory efficiency. Because few of these patients undergo coronary angiography, an alternative method to assess the safety and accuracy of stress-only imaging in this population is to ...
where width and height are the size of the texture. I am trying to do that on Windows with Amd graphic card.If I move the textured quad, scale the textured scale .. I see at the some changing location an artifact (horizontal or vertical lines).it seems my shader is very classical .. I dont know what I can do to avoid theses artifacts ...
p2 assumes that two artifacts with the same identifier and same version number are the same artifact. An artifact is made available to p2 by publishing the artifact to a repository, a process that also adds any metadata about the artifact. p2 comes with several publishers that know how to extract metadata for bundles, features, and products. Most Eclipse build systems (e.g., Tycho, Buckminister, PDE/Build) can automatically publish the artifacts during a build. Other publishers could be created using p2s APIs to handle other types of artifacts (e.g., Windows DLLs). The p2 Director is responsible for installing a set of artifacts. The Director uses the metadata about an artifact, called an installable unit or IU, to determine how the artifact should be installed and to include any dependencies of those artifacts. Thus installing a product requires installing its associated features, which requires installing the specified bundles; installing the product also requires installing the ...
I recently took a mystery quilt class. It was a lot of fun. I had no idea how the quilt was going to turn out and actually look until I was almost done with it. It was an all day class and we had a great teacher. I learned a lot of things in this class and a few new tricks I hadnt thought of before. Thanks to Deb for making our class great and being a great teacher. This quilt is gorgeous. She came up with the pattern for the quilt herself. All I did was pick the fabrics and sew them how she instructed and it turned out amazing. I love the colors that I chose for this quilt. I havent finished it yet. This is just the front because I have to save up some money to get this one machine quilted and I am waiting for the back to be ordered. It is a gorgeous quilt and I cant wait to put this one to use. I have 3 other quilts I am also in the process of finishing. I have been very busy quilting lately. It has been a lot of fun and something that my husband and I also enjoy doing together. I look ...
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In Matlab (Mathworks, MA, USA), we set EEG sample values to zero in an interval disrupted by the TMS pulses (−2 to 65 msec in relation to TMS onset). Next, we interpolated (using a spline interpolation) the EEG samples set to zero (using data 250 msec before and after the interval set to zero), without affecting EEG samples outside this 67-msec interval (the interpolated segment was of the same order as the rest. of the data), so we were able to further filter the data (Sadeh et al. 2011). After initial low-pass filtering (100 Hz) Inhibitors,research,lifescience,medical during recording, additional filters were applied after removal of the TMS artifact and data interpolation. High-pass filtering (0.5 Hz), additional low-pass filtering (30 Hz), and a notch filter (50 Hz) were used (doing the filtering before artifact removal would propagate the substantially stronger TMS artifact through. the data). To limit the spreading of the interpolated data, we used an infinite impulse response (IIR) ...
When a repository knows that an artifact exists and knows the ID of that artifact, but it does not know the artifact content, then it stores that artifact as a "phantom". A repository will typically create a phantom when it receives an igot card for an artifact that it does not hold or when it receives a file card that references a delta source that it does not hold. When a server is generating its reply or when a client is generating a new request, it will usually send gimme cards for every phantom that it holds.. A cluster is a special artifact that tells of the existence of other artifacts. Any artifact in the repository that follows the syntactic rules of a cluster is considered a cluster.. A cluster is line oriented. Each line of a cluster is a card. The cards are separated by the newline ("\n") character. Each card consists of a single character card type, a space, and a single argument. No extra whitespace and no trailing or leading whitespace is allowed. All cards in the cluster must ...
The term "artifact" currently does not have a formal definition within the domain of cyber/digital forensics, resulting in a lack of standardized reporting, linguistic understanding between professionals, and efficiency. In this paper we propose a new definition based on a survey we conducted, literature usage, prior definitions of the word itself, and similarities with archival science. This definition includes required fields that all artifacts must have and encompasses the notion of curation. Thus, we propose using a new term - curated forensic artifact (CuFA) - to address items which have been cleared for entry into a CuFA database (one implementation, the Artifact Genome Project, abbreviated as AGP, is under development and briefly outlined). An ontological model encapsulates these required fields while utilizing a lower-level taxonomic schema. We use the Cyber Observable eXpression (CybOX) project due to its rising popularity and rigorous classifications of forensic objects. Additionally, ...
What happens to a technology artifact after it is adopted? It has to evolve within its particular context to be effective; otherwise, it will become part of the detritus of change, like the many genes without a discernible function in a living organism. In this paper, we report on a study of post-adoptive behavior that examined how users modified and innovated with technology artifacts. We uncovered three types of modifications made to technology artifacts: personalization, customization, and inventions. Personalization attempts are modifications involving changes to technology parameters to meet the specificities of the user; customization attempts adapt the technology parameters to meet the specificities of the users environment; and inventions are exaptations conducted to the technology artifact. This paper presents a grounded theoretic analysis of the post-adoptive behavior based on in-depth interviews with 20 software engineers in one multi-national organization. We identify a life-cycle ...
Buckminster allow artifacts to be variable. Variability is achieved through artifact attributes and by actions that can produce artifacts attributed in different ways. A trivial example of this is a compiler that can compile the same source, either stripped and optimized (distribution), or with symbols and not optimized (for debug purpose). Rather than having two artifacts and two actions (and two of every required artifact, etc.) attributes can be set in the outmost action, and these are propagated all the way. A attribute can be set in the artifact declaration or stem from the action that produces the artifact. The initial artifact of a cspec is never variable since it does not stem from an action. The more derived an artifact is, the less variable it becomes. A pre-built binary is typically not variable at all. If an artifact defines that an attribute stems from the producing action, then that action must somehow provide the attribute. It can do this either by declaring that it is the ...
ARTifacts, an Arts & Antiques Emporium located in historic downtown Clarksville, TN, opened in December, 2008. ARTifacts features more than 40 local artists, artisans, and antique dealers. The artists at ARTifacts demonstrate "expertise" in all of the fine arts--from oils and pastels to acrylics and pottery. ARTifacts Artisans work with wood and glass, as well as fabric and yarn. And our antique vendors carry everything from nick-nacks & collectibles to fine furnishings & primitive pieces ...
ARTifacts, an Arts & Antiques Emporium located in historic downtown Clarksville, TN, opened in December, 2008. ARTifacts features more than 40 local artists, artisans, and antique dealers. The artists at ARTifacts demonstrate "expertise" in all of the fine arts--from oils and pastels to acrylics and pottery. ARTifacts Artisans work with wood and glass, as well as fabric and yarn. And our antique vendors carry everything from nick-nacks & collectibles to fine furnishings & primitive pieces ...
Motion during diffusion-weighted imaging (DWI) introduces phase errors that can cause significant artifacts in brain images. One method of correcting these errors uses additional navigator data to measure the phase corruptions. Standard navigator methods correct for rigid-body motion but cannot correct for nonrigid deformations of the brain related to the cardiac cycle. This work derives a generalized reconstruction that corrects for nonrigid motion based on a least-squares formulation. Since this reconstruction has the disadvantage of being computationally expensive, an approximation is presented, called a refocusing reconstruction. The refocusing reconstruction is both efficient and straightforward. Each readout is multiplied in image space by the phase conjugate of the navigator image, and these rephased readouts are then summed. The conditions under which the refocusing reconstruction is sufficient are considered and methods to improve the quality of refocused images are discussed. In particular,
The system and method reduces the quantization artifacts in the addition and removal of a digital watermark to and from a selected resolution image of a hierarchical image storage system where the watermark removal record is placed in a higher resolution image component. For those applications where preserving the image quality of a higher resolution image component is more critical than preserving the image quality of a lower resolution image component, the low-resolution image is modified according to the teachings of the present invention to minimize and in many cases eliminate the quantization artifacts at the higher resolution component.
We provide a mathematical understanding for artifacts in QSM, particularly streaking artifacts. 1) The local field data can be decomposed into a dipole-compatible part and a dipole-incompatible part. 2) In spatially continuous space, the streaking-free susceptibility solution is obtained from the dipole-compatible field data only, and the dipole-incompatible data leads to artifacts defined by a wave propagator with z as time, specifically, streaking artifacts from granular noise and shadow artifacts from white matter noise error. Although it is not known how to filter out such dipole-incompatible data, its artifacts can be suppressed in regularization-based Bayesian methods such as MEDI, which can efficiently penalize streaking artifacts. k-space-truncation-based methods that generate additional dipole-incompatible data near the zero cone amplify streaking artifacts ...
This ECG is being offered as a teaching aid, to show how artifact can affect our ability to interpret an ECG, and to encourage our students to be meticulous in obtaining a good-quality tracing whenever possible. If there are insurmountable obstacles preventing a technically good tracing, the circumstances should be written on the ECG. Such obstacles could be: seizures, tremors, vigorous resuscitation efforts underway, or patient not cooperating. When an ECG has obvious signs of artifact, the causes of the artifact should be corrected and the ECG repeated. Teach your students to strive for perfection. Even though we cannot obtain "perfection", if we settle for sloppiness, it will breed more sloppiness. This ECG has some intriguing abnormal signs, but we should wait for a better tracing before attempting a firm interpretation. We do see abnormal ST segments and T waves in the high lateral leads I and aVL. These, along with the high voltage in aVL, suggest left ventricular hypertrophy with strain. ...
LASIK is one of the most popular corrective eye surgeries. Contact your optometrist to find out if you are a candidate and to learn more about the surgery.
Hotel Sedgewick Artifacts - Ghostbusters: Hotel Sedgewick Artifacts are found in the locations described below.     The serving tray is the first artifact you find and it is also t...
I dont know how to describe this, so Ill just show a few screenshots. Im getting strange green artifacts all over my footage from my Kodak Playsport
Thats what I was thinking too. Ive only seen those strange little artifacts when using less than 64x64 tiles with alpha in them. Like you said, for small stuff, you gotta clear the CGContext first before loading the image from disk into memory. Dont know how theyd show up for larger stuff, but Id put my money on un-initialized memory ...
https://issues.apache.org/jira/browse/HBASE-18838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16291318#comment-16291318 ] Appy commented on HBASE-18838: ------------------------------ bq. v3: Moving hadoop-minicluster to test scope fixes most everything else (*) Guessing hadoop got rid of htrace-core from their deps too and that testing against hadoop3 passes locally (?) Few minor things: - patch is adding lines with 0 indent. (i) - Since you introduced shaded.prefix ((y)), lets replace old redundancies with it too. {quote} - ,artifactId,servlet-api,/artifactId, + ,artifactId,javax.servlet-api,/artifactId, {quote} Add a separate exclusion, jic. Or verify that this doesnt add servlet-api jar to tars. Although not an issue right now since we build against 2.7 for release (right(?)), might surface when 2.x goes away. (festive time, enjoy the colors :) ) , shaded artifacts are incorrect when built against hadoop 3 , ...
In this work we present a method based on singular spectrum analysis to remove ocular artifacts (EOG) from an Electroencephalogram (EEG). After embedding the EEG signals in a feature space of time-delayed coordinates, the data are clustered and the principal components (PCs) of each cluster are computed. We assume that the EOG artifact is associated with the PCs belonging to largest eigenvalues. We incorporate a Minimum Description Length (MDL) criterion to estimate the number of eigenvalues which correspond to the EOG artifact. The extracted EOG signal is subtracted from the original EEG signal to obtain the corrected EEG signal we are interested in. ...
The above steps are designed to deal with systemic issues. For local problems, such as brief movement artifacts, another set of techniques may be applied. If there is a segment of data during which it is not possible to see any peaks clearly assignable to cardiac R-waves, it may be best to remove the affected region from analysis. To do this without affecting the relative timing of all other segments of the data, use the I-beam tool to select the period from the beginning to the end of the artifact. Preferably have the two edges be close to the ECG baseline (which should be zero). Then choose "Transform > Math Functions > Connect Endpoints." This will replace the data in the selected area with a line that literally connects the endpoints of the selected area. If instead there is an R wave but it is obscured because motion artifact brought it down or made adjacent sections of the signal large, selecting an area containing the R-wave (or adjacent areas) and using "Transform > Waveform Math" may ...
Mahjongg Artifacts varies this in a couple of ways. First, the goal if each board is to match the two golden tiles, which can sometimes be possible before clearing the rest of the tiles. When this presents itself you are faced with a choice: do I clear everything away to maximize the score or minimize my time to maximize the score. Yeah - it is a trade-off like anything else.. One thing to help you is the ability to reshuffle. As you progress and do well you get reshuffle orbs that allow you to reshuffle the remaining tiles if you dont like the layout. Of course, you can also get to the point of having no available moves and need to either reshuffle or restart the board, but it is nice to have the option. Im a completest and like my board completely clear, even if doing it more quickly and not reshuffling would have gotten me more points!. I played Mahjongg Artifacts on Kindle Fire after using the smaller PSP Go screen and larger iPad screen, and at times the small screen was an issue with ...
1This feature is 510(k) pending. Not available for sale in the U.S.. 2iMAR is designed to yield images with a reduced level of metal artifacts compared to conventional reconstruction if the underlying CT data is distorted by metal being present in the scanned object. The exact amount of metal artifact reduction and the corresponding improvement in image quality achievable depends on a number of factors, including composition and size of the metal part within the object, the patient size, anatomical location and clinical practice. It is recommended, to perform iMAR reconstruction in addition to conventional reconstruction.. 3In clinical practice, the use of ADMIRE may reduce CT patient dose depending on the clinical task, patient size, anatomical location, and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task. 4In clinical practice, the use of SAFIRE may reduce ...
Fundamentals of MRI including signal-to-noise ratio, resolution, and contrast as dictated by physics, pulse sequences, and instrumentation. Image reconstruction via 2D FFT methods. Fast imaging reconstruction via convolution-back projection and gridding methods and FFTs. Hardware for modern MRI scanners including main field, gradient fields, RF coils, and shim supplies. Software for MRI including imaging methods such as 2D FT, RARE, SSFP, spiral and echo planar imaging methods. Fundamental tradeoffs of tailoring hardware and pulse sequences to specific applications. The modern MRI toolbox will be introduced, including selecting a slice or volume, fast imaging methods to avoid image artifacts due to physiologic motion, and methods for functional imaging. The fundamentals of MRI image artifacts (motion, magnetic susceptibility variations, RF field variations) will also be covered. The last part of the class will present emerging research opportunities and concomitant engineering research ...
Egypt has requested the return of a bust of Nefertiti and other artifacts from European museums, a move motivated as much by politics as by culture.
A method and apparatus for processing images received on an image sensor of rectangular configuration bounded by four outer edges and including a plurality of pixel elements arranged in a rectangular matrix includes the following operations: A. locating an initial rectangular-matrix region consisting of pixel elements determined to be free of an artifact; B. sequentially testing each pixel element along two contiguous outer edges of the image sensor, starting from the initial rectangular-matrix region, to determine whether the pixel value of the tested pixel element is sufficiently large to indicate the probability of an artifact, and for each such pixel element found to have such a pixel value, replacing its pixel value with another having a relation to the pixel value of its closest neighbours found to be free of an artifact, thereby cleaning the respective pixel element; and C. cleaning in a similar manner each of the remaining pixel elements.
In accordance with the distortion correction method for an X-ray radiograph diagnosis device, the distortion center of the X-ray image is determined by use of a plate-shaped object having a circular marker M and a marker center M0. On the basis of the positions of the sample points M1 through M4 upon the circular marker M, the distortion center is inferred. Further, a grid marker pattern is used to determine the magnitudes of pincushion distortion at respective distances from the distortion center. The correction coefficients for correcting the spool distortion at respective distances from the distortion center are determined on the basis of the relationship between the physical and displayed distances from the marker center M0 to the sample points.
Most gross physiologic motions (respiration, swallowing, cardiac pulsation) occur over time frames of a hundred milliseconds to several seconds. Because these motions are slow in relation to the frequency-encode sampling interval, they typically produce only a small amount of spatial blurring locally in the frequency-encode direction. Conversely, since the phase sampling interval is generally equal or longer than the period of most physiologic motions, artifacts will be more prominent in this direction. Furthermore, these artifacts will be propagated in the phase-encode direction regardless of whether the physiologic motion has occurred in the frequency-encode, phase-encode, or slice-select directions ...
Our 2010 Artifacts from the Future are new, thought-provoking visual representations of possible responses to the challenge of transforming bodies and lifestyles. These artifacts offer plausible depictions of health interventions at the scale of bodies, networks, and environments that will enhance our capacity for well-being. You will be able to use these artifacts to jump-start strategic thinking in your organization and ideate other possibilities. If you have any questions please contact Dawn Alva or Neela Nuristani. ...
Diffusion-weighted imaging (DWI) is known to be prone to artifacts related to motion originating from subject movement, cardiac pulsation and breathing, but also to mechanical issues such as table vibrations. Given the necessity for rigorous quality control and motion correction, users are often left to use simple heuristics to select correction schemes, which involves simple qualitative viewing of the set of DWI data, or the selection of transformation parameter thresholds for detection of motion outliers. The scientific community offers strong theoretical and experimental work on noise reduction and orientation distribution function (ODF) reconstruction techniques for HARDI data, where postacquisition motion correction is widely performed, e.g., using the open-source DTIprep software (Oguz et al., 2014), FSL (the FMRIB Software Library) (Jenkinson et al., 2012) or TORTOISE ( Pierpaoli et al. , 2010). Nonetheless, effects and consequences of the selection of motion correction schemes on the ...
I suppose this is a good follow-up to the post on Grays Anatomy. (The study of genetics is the new study of anatomy, right?) The image above is a quilt that is designed to show a YAP genomic sequence: "the Y alu polymorphism sequence of an Italian male is encoded in this quilt. The quilt is made of shot silk, which reflects light differently depending on the orientation of the weave and the viewer." The quilt is by Beverly St. Clair, a psychiatrist who is also a quilter, and more explanation of her method and how to read the quilt can be found on her website ...
The Event FIVE Years in the Making! Thirteen mystical Artifacts, including the Witchblade, the Darkness and others, guide the fate of the Top Cow Universe. For centuries, its been whispered that bringing together all 13 Artifacts would herald mankinds destruction. But a mysterious figure has been manipulating events, laying plans to put Armageddon into motion. The final phase begins here, with the abduction of Hope, the daughter of Sara Pezzini and Jackie Estacado. What ensues will remake the entirety of the Top Cow Universe, from the Witchblade and the Darkness, to the Angelus, Magdalena, and even Cyberforce. Artifacts #1 is the perfect place for faithful readers to see their loyalty pay off, and for new readers to experience the Top Cow universe.. ...
This blog contains posts about quilting that includes pictures of finished projects. It also includes information about the quilt guilds, clubs and groups that I am involved with and the activities, projects and events that are put on by these groups. I also give my thoughts and commentary on quilt books, quilt collecting and other related quilt topics from personal experience, knowledge and research. I also include stories and musings about my family, my faith and various parts of my life.
https://issues.apache.org/jira/browse/IVY-736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Xavier Hanin updated IVY-736: ----------------------------- Fix Version/s: (was: 2.0) , makepom ignores artifact type in ivy.xml and hardcodes jar in the output pom , ------------------------------------------------------------------------------ , , Key: IVY-736 , URL: https://issues.apache.org/jira/browse/IVY-736 , Project: Ivy , Issue Type: Bug , Components: Ant , Affects Versions: 2.0.0-beta-1 , Environment: Windows XP, Java 5 , Reporter: Carlton Brown , Priority: Minor , , Im using ,ivy:makepom, to generate pom files for a tarfile. Even though ivy.xml declares the package type as tar, the makepom task sets the packaging type to jar: , Input ivy.xml file fragment: , ,info organisation="myorg" module="hello-package" revision="1.0"/, , ,publications, , ,artifact name="hello-package" type="tar" ext="tar"/, , ,artifact name="hello-package" type="pom" ext="pom"/, , ...
Our Gaylord Archival® E-flute Deep Lid Artifact Box provides a cost-effective storage solution to open-shelf artifact preservation. The strong, buffered corrugated box is ideal for housing metal, wood, ceramics and plastics.
Removes negative effects from artifacts and balances them accordingly. IMO this balances artifacts for use with degradation. 100% compatible with any other mod as long as it doesnt change the artifact files. Compatible with version 1.4.22.
Creation of a new artifact instance using a supplied uri specification. An artifact uri contains the protocol identifier, an optional type, a group designator, a name, and an optional version identifier. The following represent valid artifact uri examples:. ...
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The principal techniques available all require tradeoffs between signal linearity, signal-to-noise, spatial resolution, temporal resolution, and artifacts.. Spoiled-GRE methods are probably the most popular and widely used at present, especially at 3T. Typical imaging parameters might be TR/TE/FA = 2/1/10° at 150 ms per section. Due to the low flip angle, spoiled-GRE sequences have the lowest signal-to-noise The major advantage of this method is reduced motion and blood flow artifacts. Balanced-SSFP methods (e.g. FIESTA, TrueFISP) produce the highest signal-to-noise of the major techniques. Typical imaging parameters would be similar to the spoiled-GRE technique but with a much higher flip angle (e.g. 50° instead of 10°). Major disadvantages include off-resonance artifacts ("moiré pattern") and frequency shifts induced by the gadolinium bolus. These features currently restrict the use of b-SSFP sequences to 1.5T and below.. Hybrid echo-planar/gradient echo techniques permit the fastest image ...
US has been widely applied as a first-line diagnostic technique in differentiating malignant and benign tumors based on the evaluation of angiogenesis and the growth of irregular vascular structures (16,17). Compared with magnetic resonance imaging and contrast-enhanced US, Doppler US has the advantages of being simpler, more cost-effective and more risk-free. CDFI, one of the most widely used US techniques, provides valuable data for evaluating blood flow, but with limitation in detecting vessels ,0.1 mm, as CDFI is generally associated with data loss due to movement artifacts attributed to the single-dimension filter (18). Due to the advances in US techniques, SMI is a pioneering technique that has the ability to visualize lower-speed bloodstream without motion artifacts (7). This advantage has been widely reported in the analysis of microvascular flow within thyroid nodules (19), testicular (20) and hepatic tumors (21). Multiple studies support the efficacy of SMI in specifically visualizing ...
This case demonstates an artifact associated with post-emission transmission imaging (i.e., transmission imaging that is performed after the patient has been injected with FDG). Post-emission transmission imaging is commonly performed PET scanners that utilize rotating Germanium-68 rod sources for transmission imaging. The transmission imaging data are used for for attenuation correction of the emission images. Although such transmission data sets are always "contaminated" with emission data (unless an explicit correction for this is applied to the transmission data), the effect is usually small. In the case of very "hot" tumors (such as in this patient), the large amount of activity within the lesion leads to an underestimation of the attenuation value of the lesion; in this case, the transmission image shows the majority of the lesion to have an attenuation value similar to that of lung rather than that of soft tissue. Accordingly, the emission image is undercorrected, and the measured SUV in ...
In signal processing of exercise electrocardiograms (ECGs), artifacts are a recurring problem. It is still difficult to discriminate the ECG curves from artifacts, especially in exercise ECGs and particularly in the high exercise phase. We focused on
Azagars Artifacts: Sabre of the Horselords - Artifacts are great plot devices that can serve as the focal point for an adventure or even a whole campaign. Luckily, t
Azagars Artifacts: Sabre of the Horselords - Artifacts are great plot devices that can serve as the focal point for an adventure or even a whole campaign. Luckily, t
Running into a strange issue with shape layers creating single pixel horizontal lines across my compositions when scaled. Importing artwork in from Ai;
As in the title, I have arifacts while scanning for them in atitool but they appear only when Im using 8 pipelines(softmod drivers). When I install...
Near-infrared spectroscopy (NIRS) is susceptible to signal artifacts caused by relative motion between NIRS optical fibers and the scalp. These artifacts can be very damaging to the utility of functional NIRS, particularly in challenging subject groups where motion can be unavoidable. A number of approaches to the removal of motion artifacts from NIRS data have been suggested. In this paper we systematically compare the utility of a variety of published NIRS motion correction techniques using a simulated functional activation signal added to 20 real NIRS datasets which contain motion artifacts. Principle component analysis, spline interpolation, wavelet analysis, and Kalman filtering approaches are compared to one another and to standard approaches using the accuracy of the recovered, simulated hemodynamic response function (HRF). Each of the four motion correction techniques we tested yields a significant reduction in the mean-squared error (MSE) and significant increase in the ...
0010]Motion artifacts can be reduced by using navigator echoes to identify motion-corrupted measurements and to reacquire the identified motion-corrupted measurements when the anatomy is close to a baseline position. Motion correction with navigators can come at the expense of a substantial increase in scan time. A more time efficient method is to extract information of in-plane and through-plane displacements from the navigator echoes so that k-space data can be retrospectively corrected. However, navigator displacement measurements require a priori knowledge of the type of motion so that the navigator can be tailored to the specific type of motion. For example, spherical or orbital navigators may be used to detect bulk translation and rotation. Pencil-beam navigators can be used to detect local translational motion. PROPELLER MRI, proposed by J. G. Pipe, Motion correction with PROPELLER MRI: application to head motion and free-breathing cardiac imaging, Magn Reson Med 1999, 42(5), pp. 963-969, ...
Positron emission tomography (PET) is one of the key molecular imaging modalities in medicine and biology. Penalized iterative image reconstruction algorithms frequently used in PET are based on maximum-likelihood (ML) and maximum a posterior (MAP) estimation techniques. The ML algorithm produces noisy artifacts whereas the MAP algorithm eliminates noisy artifacts by utilizing available prior information in the reconstruction process. The MAP-based algorithms fail to determine the density class in the reconstructed image and hence penalize the pixels irrespective of the density class and irrespective of the strength of interaction between the nearest neighbors. A Hebbian neural learning scheme is proposed to model the nature of interpixel interaction to reconstruct artifact-free edge preserving reconstruction. A key motivation of the proposed approach is to avoid oversmoothing across edges that is often the case with MAP algorithms. It is assumed that local correlation plays a significant role ...
Purpose: Compressed sensing (CS)-based iterative reconstruction (IR) techniques are able to reconstruct cone-beam CT (CBCT) images from undersampled noisy data, allowing for imaging dose reduction. However, there are a few practical concerns preventing the clinical implementation of these techniques. On the image quality side, data truncation along the superior-inferior direction under the cone-beam geometry produces severe cone artifacts in the reconstructed images. Ring artifacts are also seen in the half-fan scan mode. On the reconstruction efficiency side, the long computation time hinders clinical use in image-guided radiation therapy (IGRT). Methods: Image quality improvement methods are proposed to mitigate the cone and ring image artifacts in IR. The basic idea is to use weighting factors in the IR data fidelity term to improve projection data consistency with the reconstructed volume. In order to improve the computational efficiency, a multiple graphics processing units (GPUs)-based ...
Functional magnetic resonance imaging (fMRI) studies of the human brain have suggested that low-frequency fluctuations in resting fMRI data collected using blood oxygen level dependent (BOLD) contrast correspond to functionally relevant resting state networks (RSNs). Whether the fluctuations of resting fMRI signal in RSNs are a direct consequence of neocortical neuronal activity or are low-frequency artifacts due to other physiological processes (e.g., autonomically driven fluctuations in cerebral blood flow) is uncertain. In order to investigate further these fluctuations, we have characterized their spatial and temporal properties using probabilistic independent component analysis (PICA), a robust approach to RSN identification. Here, we provide evidence that: i. RSNs are not caused by signal artifacts due to low sampling rate (aliasing); ii. they are localized primarily to the cerebral cortex; iii. similar RSNs also can be identified in perfusion fMRI data; and iv. at least 5 distinct RSN patterns
The goal of our research is to understand use-driven brain network plasticity in children with brain injury, in order to develop novel neurorehabilitative treatments. To this end, we are studying childrens brains using resting state functional connectivity MRI (rs-fcMRI) and task-based functional MRI (fMRI). We are focused on pushing structural and functional MRI acquisition and analysis methodology to the level of individual patients. In order to create and annotate the connectomes of individuals (Individuomes) we must first improve the signal-to-noise, spatial resolution and replicability of fMRI and rs-fcMRI data. High-fidelity Individuomes should help accelerate fMRI-based diagnostics and neurofeedback rehabilitation therapy.. One of the main complications for rs-fcMRI and fMRI in children is excessive head movement, which introduces systematic distortions. Post-hoc data censoring methods can remove movement artifact from rs-fcMRI data, but in children post-hoc censoring leads to ...
Background: Vital parameter data collected in anesthesia information management systems are often used for clinical research. The validity of this type of research is dependent on the number of artifacts. Methods: In this prospective observational cohort study, the incidence of artifacts in anesthesia information management system data was investigated in children undergoing anesthesia for noncardiac procedures. Secondary outcomes included the incidence of artifacts among deviating and nondeviating values, among the anesthesia phases, and among different anesthetic techniques. Results: We included 136 anesthetics representing 10,236 min of anesthesia time. The incidence of artifacts was 0.5% for heart rate (95% CI: 0.4 to 0.7%), 1.3% for oxygen saturation (1.1 to 1.5%), 7.5% for end-tidal carbon dioxide (6.9 to 8.0%), 5.0% for noninvasive blood pressure (4.0 to 6.0%), and 7.3% for invasive blood pressure (5.9 to 8.8%). The incidence of artifacts among deviating values was 3.1% for heart rate ...
In this prospective study, the accuracy of whole-heart coronary MR angiography was evaluated in 131 patients with suspected coronary artery disease. The current MR angiography protocol incorporated several improvements over those used in previous studies. First, MR angiograms were acquired on axial 3-dimensional planes that encompassed the entire heart. Second, the image acquisition window in the cardiac cycle was optimized in each patient to minimize motion blurring caused by cardiac contraction. Using this approach, coronary stenoses with a reference diameter of ≥2 mm were detected with an accuracy of 94% for individual segments and 87% for individual patients.. Coronary MR angiography has been acquired in double-oblique 3-dimensional planes that followed the course of one of the major coronary arteries, necessitating repeated MR acquisitions to cover the entire coronary arteries (1). A steady-state, free-precession MR sequence permitted acquisition of a large 3-dimensional volume covering ...
5 Artifacts. *6 See also. *7 Footnotes. *8 References. *9 External links ...
Destruction of pre-Islamic artifacts[edit]. The Buddhist statues were destroyed during an attack in February 2012. Museum ... A diverse collection of artifacts are displayed in the museum, including relics from the foregone pre-Islamic period era, ... the museum has a large collection of historical artifacts, ranging from stone objects to fragments of royal antiquities from ... director Ali Waheed said that almost all the museum's pre-Islamic artifacts, dating back to before the 12th century, had been ...
Artifacts, museums and locations today. The plane that served as Air Force One at the time of the assassination is on display ...
... which stands as an example of a holistic palimpsestic artifact in its nature. Artifact, as defined by Bruns, is a source of ... Palimpsestic artifacts and granularity[edit]. Axel Bruns challenges conventional ideas of production and consumerism by ... He identifies this characteristics as a stigmergic collaboration,[9] where any user can have access to the artifact and add on ... Bruns argues that granularity offers produsers a way to connect and contribute to a source or artifact in a way which is ...
When the captured scene features rapid movement or dynamic motion, artifacts may occur as a result of time differences between ...
Ring artifact. Probably the most common mechanical artifact, the image of one or many "rings" appears within an image. They are ... responsible for well-known line-artifacts in computed tomograms. Artifacts are caused by abrupt transitions between low- and ... responsible for well-known line-artifacts in computed tomograms. Artifacts are caused by abrupt transitions between low- and ... Many algorithms exist to correct for this artifact. They can be divided in mono- and multi-material methods.[86][93][94]. Dose ...
Artifacts[edit]. An ECG tracing is affected by patient motion. Some rhythmic motions (such as shivering or tremors) can create ... "Minimizing ECG Artifact" (PDF). Physio-Control. Physio-Control, Inc., Redmond WA. 2015. Retrieved 21 October 2017.. ... Takla, George; Petre, John H.; Doyle, D John; Horibe, Mayumi; Gopakumaran, Bala (2006). "The Problem of Artifacts in Patient ... Accurately separating the ECG artifact from the true ECG signal can have a significant impact on patient outcomes and legal ...
Artifacts[edit]. This section needs additional citations for verification. Please help improve this article by adding citations ... The following artifacts are commonly used, although not considered by all as a core part of Scrum:. Sprint burn-down chart[edit ... Many companies use universal tools, such as spreadsheets to build and maintain artifacts such as the sprint backlog. There are ... Other organizations implement Scrum without software tools, and maintain their artifacts in hard-copy forms such as paper, ...
6 Artifacts. *7 See also. *8 References. Economy[edit]. Subsistence[edit]. The main food of the Yangshao people was millet, ...
Artifacts[edit]. Painted Cylindrical Pottery Vessel, Hongshan Culture (c. 4700-2900 BC), Liaoning, 1988. National Museum of ... Hongshan burial artifacts include some of the earliest known examples of jade working. The Hongshan culture is known for its ...
Artifacts[edit]. The wreckage of I-401 was discovered by the Pisces deep-sea submarines of the Hawaii Undersea Research ...
Artifacts[edit]. This section needs additional citations for verification. Please help improve this article by adding citations ... The following artifacts and techniques can be used to help people use Scrum.[16] ... Many companies use universal tools, such as spreadsheets to build and maintain artifacts such as the sprint backlog. There are ... Other organizations implement Scrum without software tools and maintain their artifacts in hard-copy forms such as paper, ...
Artifact consciousness[edit]. See also: Artificial consciousness. The idea of an artifact made conscious is an ancient theme of ...
Introduction of artifacts in audio material[edit]. Musicality, especially on the radio, contains musical aspects (timbre, ... When the volume of music is higher, these artifacts become more apparent, and because they are uncomfortable for the ear, cause ... emotional impact, melody), and artifacts that arise from non-musical aspects (soundstaging, dynamic range compression sonic ... balance). The introduction of these sonic artifacts affects the balance between these musical and non-musical aspects. ...
Scythian artifact claim[edit]. A few cryptozoologists have claimed that Scythian kurgan figures represent Irish elks, having ...
Azarpay, G. (1968). Urartian Art and Artifacts. A Chronological Study. Berkeley and Los Angeles: University of California Press ... The sites exhibiting artifacts made by the lost-mould process in Vietnam, such as the Dong Son drums, come from the Dong Son, ...
The Gibbs phenomenon manifests as a cross pattern artifact in the Discrete Fourier Transform of an image,[14] where most images ... In MRI, the Gibbs phenomenon causes artifacts in the presence of adjacent regions of markedly differing signal intensity. This ... In signal processing, the Gibbs phenomenon is undesirable because it causes artifacts, namely clipping from the overshoot and ... and the oscillations are called ringing or ringing artifacts. Truncating the Fourier transform of a signal on the real line, or ...
Artifacts found: Locals have picked up physical artifacts, sometimes held by the local museum but more often collected in ... Modern technology such as GPS has made survey recording much easier, as positions of artifacts or artifact clusters ("sites") ... Schofield, A. J. (1991). Interpreting Artefact Scatters: Contributions to Ploughzone Archaeology. Oxford: Oxbow. ISBN 978-0- ... In some cases, all artifacts of archaeological value are collected. This is often the case if it is a rescue survey, but less ...
"NMR Artifacts". www2.chemistry.msu.edu.. *^ Parella, Teodor. "INVERSION-RECOVERY EXPERIMENT". triton.iqfr.csic.es.. ...
The rock carvings have been dated through comparison with depicted artifacts. Caucasus[edit]. Arsenical bronze artifacts of the ... The earliest bronze artifacts have been found in the Majiayao culture site (between 3100 and 2700 BC),[31][32] ... With artifacts of the Indus Valley Civilization being found in ancient Mesopotamia and Egypt, it is clear that these ... The Chinese bronze artifacts generally are either utilitarian, like spear points or adze heads, or "ritual bronzes", which are ...
"Unique & Rare Artifacts". Beechcraft Heritage Museum. Beechcraft Heritage Museum. Retrieved 30 March 2016.. ...
Selected runic artifact. The ring of Pietroassa (or Buzău torc) is a gold torc-like necklace found in Pietroassa (now ... Consider adding new modules such as 'Selected biography', 'Selected location', or 'Selected artifact'. ...
using a set of variables to allocate artifacts to classes or. *using statistics and artifact data to find natural groups (or ... Additional sources include small artifacts and historical documents. Small artifacts, such as clay tobacco pipes, can be used ... Wooden artifacts can also indicate other ways in which wood was utilized in the past. After wood is extracted from its primary ... For example, the artifact shape, cracks, and places where pieces of metal were joined together can be identified. Additionally ...
The Fermi paradox can be asked in two ways.[16] The first is, "Why are no aliens or their artifacts found here on Earth, or in ... These might leave detectable artifacts in the Solar System, such as old probes or evidence of mining activity, but none of ... Conjectures about stellar-scale artifacts. Further information: Dyson sphere, Kardashev scale, Alderson disk, Matrioshka brain ... Such large scale artifacts would drastically alter the spectrum of a star. ...
ArtifactsEdit. The vast majority of artifacts recovered at Poverty Point are small, baked shapes made of loess, found in a wide ... Artifacts typical of the early date, such as baked loess blocks and Evans projectile points, were recovered near the mound. [25 ... The state built a museum devoted to interpreting the earthworks and the artifacts uncovered there.[53] In 1988 Congress ... However, clay figurines are evenly distributed throughout the ridge system.[42] Based on the analysis of artifacts recovered ...
The most exemplary artifacts from the culture were its cong (cylinders). The largest cong discovered weighed 3.5 kg. Bi (discs ... These artifacts are also common in later neolithic Southeast Asia and the technological and economic toolkits of these ... The culture was highly stratified, as jade, silk, ivory and lacquer artifacts were found exclusively in elite burials, while ... The inhabitants of Liangzhu sites used artifact designs of "bent knee" shaped adze handles, stone untangled adzes, art styles ...
Artifacts in acid-fast stained stool specimens.. Several objects may be seen in acid-fast stained stool specimens that may be ...
Visitors look at ancient artifacts during a press preview of new galleries for the Art of the Arab Lands, Turkey, Iran, Central ... Visitors look at ancient artifacts during a press preview of new galleries for the Art of the Arab Lands, Turkey, Iran, Central ... Visitors look at ancient artifacts during a press preview of new galleries for the Art of the Arab Lands, Turkey, Iran, Central ... Visitors look at ancient artifacts during a press preview of new galleries for the Art of the Arab Lands, Turkey, Iran, Central ...
Final MMGs: This section contains MMGs and related artifacts that are available for all public health reporting jurisdictions ...
Media in category "Microscopic artifacts". The following 2 files are in this category, out of 2 total. ... Retrieved from "https://commons.wikimedia.org/w/index.php?title=Category:Microscopic_artifacts&oldid=66050282" ...
In Artifacts of Loss, Jane E. Dusselier looks at the lives of Japanese American internees through the lens of their art. ... which is critical for moving camp-made art into the present and future instead of understanding these artifacts as belonging ...
Lyrics to Whayback by Artifacts: [El Da Sensai] / I calculate that eighty-five was the year / I first grabbed the pen, ...
His bones were discovered in present-day Montana with other artifacts from the Clovis culture. Now the skeleton will be ... His bones were discovered in present-day Montana with other artifacts from the Clovis culture. Now the skeleton will be ...
An artifact can be included in other artifacts.). Artifact page. Use the Artifact page to configure the artifact layout, to ... To view or edit the settings for an artifact, select the artifact of interest, and use the Artifact page to the right of the ... If the artifact is not going to be used on its own but only as a part of other artifacts, the field may may be left empty. In ... Select the artifact type.. Output directory. Specify the path to the artifact output directory. Use (Shift+EnterShift+Enter ...
... Description. An Association Class Artifact models a typical UML2 Association Class. Similarly to ... Artifact Specific Modeling Details. *Association Class Ends: each association end supports the usual qualifiers found in UML2 ... Super-Artifact (optional): the fully qualified name of the Association Class being extended by this Association Class ... Association Class Attributes: the set of attributes that constitute the details of this Association Class Artifact. ...
Bugs, mud, rain -- and Maya artifacts. Volunteers dig in to the jungle at Chocola for a chance to help uncover an ancient lost ... Their reward was the discovery of artifacts, a life-size statue, "a fantastic monument and what we thought was a royal palace ... The group as a whole found some pretty significant artifacts.". Earthwatch differs from many volunteer travel organizations in ...
Archaeologists say they have unearthed one of the largest collections of Stone Age skeletons and artifacts ever found in the ... Stone Age Cemetery, Artifacts Unearthed in Sahara. Brian Handwerk. for National Geographic News. ... Archaeologists have excavated a trove of Stone Age human skeletons and artifacts on the shores of an ancient lake in the Sahara ... Harpoons, fishhooks, pottery, jewelry, stone tools, and other artifacts pepper the ancient lakeside settlement. The objects ...
... In order to deploy artifacts using FTP you must first specify the use of an FTP server in the ... element which will pull in the FTP artifacts required to deploy with FTP:. ,project, ... ,distributionManagement, ,repository ...
... What If? ^ , Unknown Posted on 08/01/2007 3:28:51 AM PDT by 2ndDivisionVet ... KEYWORDS: ancient; ancientcivilization; antikythera; antikytheramechanism; archeology; artifacts; ggg; gods; godsgravesglyphs; ... Archaeology/Anthropology/Ancient Cultures/Artifacts/Antiquities, etc.. Gods, Graves, Glyphs (alpha order). ... Ooparts ? What are Ooparts? That stands for Out of Place Artifacts. Things that show up where they shouldnt, a piece of gold ...
New WWII Artifacts Exhibit!New WWII Artifacts Exhibit!. Paul Allens Flying Heritage Collection is set to unveil several new ... additions to its one-of-kind collection of vintage aircraft, military vehicles and other World War II artifacts. Acquired at ...
Tracking of NFS artifacts *From: Mats Erik Andersson ,[email protected], ... Re: Tracking of NFS artifacts. *To: Mats Erik Andersson ,[email protected], ...
Artifact Software, Inc., today announced record quarterly subscription sales of its Lighthouse product, its fourth ... About Artifact Software Artifact provides software products and services that transform IT projects into a manageable and ... Artifact Software announced record first quarter sales, growing 22% over the 4th quarter of 2008, and more than 79% over the ... Artifacts Lighthouse is an IT Project Workspace for virtual teams. It brings together IT project data into a single, ...
Claire thought she would be an active historian/archaeologist. Instead of going on adventures to exotic locations, though, she spent most... Continue reading ...
When the world is in turmoil, this Museum fights back using its most powerful tool: education. It is urgent that we teach people about the consequences of hate and antisemitism.. Help us share the lessons of Holocaust history. ...
Artifact descriptions & templates A - H , I - P , Q - Z. ARTIFACTS OVERVIEW. The life cycle of possible artifacts is mapped to ... SELECT THIS LINK TO VIEW/DOWNLOAD THE ARTIFACTS TABLE (mapping artifacts to XLC phases and reviews). XLC TEMPLATES. Select the ... XLC Artifacts & Templates Your projects complexity will determine which artifacts are needed for a project-as documented in ... Artifacts evolve in maturity through the XLC:. *Preliminary - the first instance of an artifact that contributes to a stage ...
Ice preserves artifacts in two different kinds of sites: glaciers and ice patches. Valley glaciers were sometimes used as ... As the climate warms, the ice melts, and artifacts trickle out. If archaeologists manage to be in the right place at the right ... At about 1,400 years old, this is the earliest example of Yukon footwear and one of the oldest such artifacts found in Canada. ... 2012) The archaeology of Yukon ice patches: New artifacts, observations, and insights. Arctic 65(Suppl 1):118-135. ...
A key issue in social intelligence design is the realization of artifacts that can fluently communicate with people. Thus, we ... A key issue in social intelligence design is the realization of artifacts that can fluently communicate with people. Thus, we ...
Emotions in Humans and Artifacts Edited by Robert Trappl, Paolo Petta and Sabine Payr ... Emotions in Humans and Artifacts. https://mitpress.mit.edu/books/emotions-humans-and-artifacts ...
We have delivered 12,000 artifacts to the museum that we found here. We have also unearthed 20,000 artifacts with scientific ... All of the artifacts are undergoing analysis. "For example, Germans carry out genetic research on molar teeth. Botanical ... Within the scope of the work to rescue the artifacts that will remain underwater in the Ilısu Dam, excavations have been ... Körtik Hill offers thousands of artifacts. DİYARBAKIR. Excavations in Körtik Hill (Körtik Tepe) in the southeastern province of ...
"More than 5,000 artifacts have so far been restored and conserved in the laboratory. Along with metal artifacts like gold, ... said artifacts were first cleaned from sea water before being taken into the protection and conservation stage.. The artifacts ... Each artifact is registered at the museum. "It is like a doctor keeping the patients card and taking care of his or her ... "Each artifact has its own card which explains what operations it has gone through," he said, adding that the most important ...
A prequel to Mahjongg Artifacts: Chapter 2, the Story Mode of Mahjongg Artifacts introduces players to the start of the ... Mahjong Artifacts Game Page. News (1). Downloads (1). User Reviews. Cheats, FAQS. ...
  • He is an amateur archaeologist who has picked up, acquired, items some of which we think are cultural artifacts and relics," FBI spokesman Paul Bresson said. (reuters.com)
  • What new technological and institutional strategies must be invented to archive cultural artifacts and hand them on to future generations? (dlib.org)
  • What Are Digital Cultural Artifacts? (dlib.org)
  • We will not attempt a formal definition of something that is still being shaped by experimentation and practice, except to describe some of the parameters differentiating digital artifacts from other kinds of cultural artifacts that may be useful in building digital archives. (dlib.org)
  • As things, digital cultural artifacts are dramatically different from those in other media, as illustrated by these estimates of size. (dlib.org)
  • Specifies a remote repository to which generated artifacts should be deployed to. (apache.org)
  • ePortfolio is a repository for digital artifacts that represent your learning. (oakton.edu)
  • Declares an artifact foo, of type and extension 'jar' located at the url http://www.acme.com/repository/barbaz/foo-1.2-bar.jar . (apache.org)
  • As a developer, I want the sources of the artifacts used in my project available in my local repository, so that I can browse these sources from there. (apache.org)
  • The design that's emerging is along the lines of * add a new task to download available source artifacts (e.g., task 'sources' or task 'download-sources'), * modify the IDE tasks so that they reference the source artifacts available in the local repository. (apache.org)
  • In exploring the consequences of digital artifacts and their use for the way we preserve and archive our culture, we will focus upon the World Wide Web. (dlib.org)
  • Other digital artifacts that might yield different kinds of insights are, for example, simulation software like SimCity, visualization and scenario software, Jurassic Park dinosaur animations, or collaboratories and virtual communities. (dlib.org)
  • Like other media, digital cultures are simultaneously performances and artifacts, although digital artifacts are profoundly different from physical artifacts. (dlib.org)
  • That stands for Out of Place Artifacts. (freerepublic.com)
  • Such objects have become known as out of place artifacts, or 'OOPArts' for short. (skeptoid.com)
  • The Quimbaya artifacts are several dozen golden objects, found in Colombia, made by the Quimbaya civilization culture, dated around 1000 CE, a few of which (the so-called Quimbaya airplanes) are supposed by ancient astronauts theorists to represent modern airplanes, and therefore to be out-of-place artifacts. (wikipedia.org)
  • New WWII Artifacts Exhibit! (aopa.org)
  • An Elvis Presley exhibit that opened at a Las Vegas casino-hotel with great fanfare last year has abruptly closed amid a leasing dispute that involves hundreds of the King's artifacts. (spokesman.com)
  • The "Price of Freedom: Americans at War" exhibit at the museum includes Johnson's donation in addition to another of other prisoner artifacts, including striped uniforms and toiletries. (upi.com)
  • For the first 21 days, internal organizations such as NASA visitor centers, agency exhibit managers and the Smithsonian Institution may request artifacts. (redorbit.com)
  • In 2005, Mr. Ary was convicted of stealing and selling hundreds of space artifacts, many on loan from NASA to the Cosmosphere. (csmonitor.com)
  • A Kettle Falls man who collects historic artifacts was sentenced Tuesday for stealing Indian artifacts from the Lake Roosevelt National Recreation Area. (spokesman.com)
  • DALLAS - President Franklin Delano Roosevelt's trademark fedora, the last check he ever signed, and watercolor sketches for the unfinished portrait he sat for on the day he died are among hundreds of historic artifacts and documents headed for the auction block. (foxnews.com)
  • Thieves ransacked the collection, stealing or destroying priceless artifacts that chronicled some 7,000 years of civilization in Mesopotamia, including the ancient Babylonians, Sumerians and Assyrians. (washingtontimes.com)
  • Archaeologists have excavated a trove of Stone Age human skeletons and artifacts on the shores of an ancient lake in the Sahara. (nationalgeographic.com)
  • Perhaps a few dozen archaeologists worldwide are collecting frozen artifacts, estimates Greg Hare, the senior projects archaeologist with the Yukon government in Whitehorse, Yukon, Canada. (pnas.org)
  • Reuters) - Dozens of federal agents, archaeologists and other experts are scouring a rural Indiana home to determine the origin of thousands of artifacts its 91-year-old homeowner has collected over eight decades, an FBI spokesman said on Wednesday. (reuters.com)
  • Though scholars have long been aware of the shortage of raw materials, it wasn't until fall 2014 that archaeologists from the Museum Lolland-Falster in southern Zealand discovered a unique artifact-a Bronze Age hafted dagger that wasn't made of bronze. (archaeology.org)
  • At the site of Nea Paphos, the capital of Cyprus in the Hellenistic and Roman periods, a city with strong traditions of pagan magic, archaeologists from Krakow's Jagiellonian University have found an artifact that provides an intriguing example. (archaeology.org)
  • A chance discovery by two divers uncovered Israel's biggest find of underwater Roman-era artifacts in three decades, archaeologists said Monday as the priceless objects were showcased for the first time. (spokesman.com)
  • The two were able to salvage some 40 artifacts and thousands of broken pieces that Hanna said will take archaeologists years to put back together. (foxnews.com)
  • The Egypt Heritage Task Force, a group of Egyptian archaeologists who use social media to try to raise awareness about illegal digging for artifacts and looting, said 1,050 pieces were stolen from the museum. (foxnews.com)
  • Artifacts from the Future give us this tangible experience of the future. (iftf.org)
  • I felt that since I had the tangible artifact I was more connected to the assignment. (dickinson.edu)
  • Every team, organization or community exposes 'artifacts', or tangible hints, regarding the true nature of their culture, said McGarr. (infoq.com)
  • The images of the Egyptian gods and their connection to magical papyri on the same artifact as a phrase mentioning the Judeo-Christian deity, Yahweh, speak to a complex world where traditions endured long after they ceased to be part of the official state religion. (archaeology.org)
  • The Egyptian Embassy in London received the artefact in September, according to the ministry's statement on Tuesday. (telegraph.co.uk)
  • (CNN) -- Work to restore Egyptian artifacts damaged during anti-government protests began on Sunday, according to the nation's newly appointed minister of antiquities. (cnn.com)
  • The work, on artifacts from King Tutankhamun's tomb, includes restoring a statue -- broken by looters in the Egyptian Museum -- of King Tut on a panther, Zahi Hawass told CNN Sunday. (cnn.com)
  • As violent clashes roiled Egypt, looters made away with a prized 3,500-year-old limestone statue, ancient beaded jewelry and more than 1,000 other artifacts in the biggest theft to hit an Egyptian museum in living memory. (foxnews.com)
  • It's usually handy to not to include this qualifier when generating maven artifacts for major releases, while it's needed when working with eclipse integration/nightly builds. (apache.org)
  • The seven nearby sites include an extensive cemetery and represent one of the largest and best preserved concentrations of ancient skeletons and artifacts ever found in the region, researchers say. (nationalgeographic.com)
  • Although the hunter's success is unknown, in 2007, Craig Lee picked up one of his darts-bent, missing its tip, trampled by a sheep, but still recognizable, and the oldest human artifact ever found in ice ( 1 ). (pnas.org)
  • We have delivered 12,000 artifacts to the museum that we found here. (hurriyetdailynews.com)
  • C. testing each of the remaining pixel elements to determine whether its pixel value is sufficiently large to indicate the probability of an artifact, and for each such pixel element found to have such a pixel value, replacing its pixel value with another pixel value having a predetermined relationship to the pixel values of its closest neighbours, thereby cleaning the respective pixel element. (google.com)
  • When the suspects were apprehended, he told CNN at the time, authorities found the remains of two mummies with them, along with some small artifacts. (cnn.com)
  • since 1.4 It is possible to give a url at which artifacts can be found. (apache.org)
  • This url will only be used if the artifact cannot be found at its standard location. (apache.org)
  • Since it was found, other artifacts have continued to fill in the gaps. (skeptoid.com)
  • It became known as the Coso Artifact, named for the Coso Range of mountains in which it was found. (skeptoid.com)
  • Provenance During sorting and classification of obsidian artifacts found in excavations of the Maya ruins at Tikal, Guatemala, eleven unworked nodules were separated from the obsidian artifacts on the basis of their shape and size (Fig. B: 120a), and color (clear brownish green). (jhu.edu)
  • The first artifact can be found on the far right of the map inside of a burnt out building. (ign.com)
  • The third and final Lucid Memory Artifact is found near the upper right of the map passed the pyramid. (ign.com)
  • Excavations in Körtik Hill (Körtik Tepe) in the southeastern province of Diyarbakır's Bismil district have unearthed more than 30,000 artifacts in 17 years. (hurriyetdailynews.com)
  • Within the scope of the work to rescue the artifacts that will remain underwater in the Ilısu Dam, excavations have been ongoing in Körtik Hill since 2000 under the leadership of the Diyarbakır Museum. (hurriyetdailynews.com)
  • The artifacts originate from some of the earliest systematic excavations at these sites, carried out jointly by the American School and the British School of Archaeology in Jerusalem in the late 1920s and 1930s. (wesleyan.edu)
  • Your project's complexity will determine which artifacts are needed for a project-as documented in the Project Process Agreement (PPA) . (cms.gov)
  • As an IDE user, I want the sources of the artifacts referenced in my project's metadata files, so that I can browse these sources directly from my IDE. (apache.org)
  • NORTH MIAMI BEACH, Fla. (AP) U.S. officials returned 168 pre-Columbian artifacts to Ecuador on Tuesday as part of an ongoing FBI initiative to repatriate stolen cultural treasures to their home countries. (deseretnews.com)
  • WASHINGTON (Reuters) - U.S. authorities returned 14 stolen and looted paintings and artifacts to Peru on Thursday, including four archaeological items more than 2,000 years old. (chicagotribune.com)
  • A prosecutor in Sweden says a man has been arrested on suspicion of handling stolen goods in connection with the return of royal funeral artifacts that were stolen last year from a Swedish cathedral. (thestandard.com.hk)
  • Over the past two years, various scientific analyses have been performed on the ossuary, including tests to determine if the patina over the inscription was consistent with that on the remainder of the artifact. (athenapub.com)
  • Instead of viewing your artifacts as complete examples, consider them as ongoing projects and continuously revise them as you develop new skills and understandings. (oakton.edu)
  • Each area represented here leads to a page with more examples of artifacts. (smm.org)
  • Gilding is the process of coating intricate artifacts with precious metals. (scienceblog.com)
  • Their work presents exciting opportunities for protective coating applications on large structures like buildings or ship hulls, metal surfaces of consumer electronics, and small precious artifacts or jewelry. (scienceblog.com)
  • As finding a meteorite was (and still is) a rare event and working the hard metallic alloy is time-consuming, artifacts made of extraterrestrial iron were considered precious. (forbes.com)
  • Artifacts are released incrementally when NASA no longer needs them, in accordance with export control laws and regulations. (redorbit.com)
  • NASA, who had apparently not been notified of the bag's sale, withheld the artifact. (csmonitor.com)
  • If this property is specified, artifacts are also deployed to the remote repo. (apache.org)
  • Conservation is being done for these historical artifacts in order to protect them for many years. (hurriyetdailynews.com)
  • Iraqi law says all artifacts over 200 years have to be handed over to the Iraqi government for inspection. (washingtontimes.com)
  • Wesleyan's collection contains artifacts from successive layers of the deeply stratified deposits, allowing students to observe thousands of years of change in stone tool technology. (wesleyan.edu)
  • An undersea band of divers, technicians, archeologists and oceanologists wound up a 17-day probe of the U.S.S. Monitor wreck site yesterday after recovering artifacts and placing the first men on the historic ironclad since it vanished 115 years ago. (washingtonpost.com)
  • Nearly 50 years after the first lunar landing, an artifact from the Apollo 11 mission has become the center of a new legal dispute. (csmonitor.com)
  • You can also add course content artifacts to your ePortfolio directly from your courses. (oakton.edu)
  • Note If you import quiz or dropbox folder results into your ePortfolio, any learning objectives associated with the quiz or dropbox folder also import into your ePortfolio pre-associated with your course content artifacts. (oakton.edu)
  • And when that blurred edge is magnified, it's easy to see that the content across the edge bleed into each other, therefore produces a halo artifact when the dark/bright color matches up on the edge. (opengl.org)
  • Cognitive artifacts help offload some of the work of thinking onto an external tool, thereby freeing the human to examine other aspects of the problem. (everything2.com)
  • The dates of their artifacts correspond to times when the climate was warm, making the area passable ( 4 ). (pnas.org)
  • It is meticulous job to paint and preserve the artifacts. (hurriyetdailynews.com)
  • I was able to reduce the halo artifact to an unnoticeable amount by trying to preserve the edge after the blur, so I ended up doing a bilateral blur (sort of). (opengl.org)
  • so the Coso Artifact has become an icon of OOPArts, and is popularly believed to constitute an insoluble problem. (skeptoid.com)
  • Developing a collection of historically and religiously important books and artifacts about the Bible is consistent with the company's mission and passion for the Bible," Hobby Lobby said in a statement. (cnn.com)
  • The difficulty is that EEG signals are very weak and subject to the contamination from many artifact signals. (springer.com)
  • In signal processing, particularly digital image processing, ringing artifacts are artifacts that appear as spurious signals near sharp transitions in a signal. (wikipedia.org)
  • Visitors look at ancient artifacts during a press preview of new galleries for the Art of the Arab Lands, Turkey, Iran, Central Asia, and Later South Asia at the Metropolitan Museum of Art in New York. (latimes.com)
  • There are supposedly documents in The British Museum that prove it was bidding against Mitchell-Hedges for the artifact at a Sothebys auction in London in 1943. (freerepublic.com)
  • After the professionals have done the necessary work on the artifacts at the laboratories, they send them to the museum, says the museum official Yaşar Yıldız. (hurriyetdailynews.com)
  • Speaking to the Anatolia News Agency, the museum's director Yaşar Yıldız said there were many artifacts waiting to be restored in the storage section of the museum. (hurriyetdailynews.com)
  • After the professionals have done the necessary work on the artifacts, they send them to the museum, he said, noting that some of the works were being displayed and some of them were being kept in storage. (hurriyetdailynews.com)
  • Each artifact is registered at the museum. (hurriyetdailynews.com)
  • Each artifact has its own card which explains what operations it has gone through," he said, adding that the most important section of the museum was the conservation part. (hurriyetdailynews.com)
  • Turkey's first restoration conservation and analysis laboratory recently set to work restoring a wide array of historical artifacts using state-of-the-art technology in the southeastern province of Mardin's main museum. (hurriyetdailynews.com)
  • The Turkish Government has filed legal papers responding to a motion by the Metropolitan Museum of Art to dismiss a suit in which Turkey has demanded the return of artifacts it contends were illegally exported in the 1960's, Harry I. Rand, an attorney representing Turkey, said yesterday. (nytimes.com)
  • Donald Miller has been working with the Federal Bureau of Investigation to sort out whether certain artifacts he has acquired should be returned to the countries or the Native American tribes from which they came or stay in his Waldron, Indiana, farmhouse that has doubled as a makeshift museum. (reuters.com)
  • Dale Ogden, the outgoing Chief Curator of Cultural History at the Indiana State Museum as well as an expert on President Abraham Lincoln, shares some of his favorite Lincoln artifacts. (indystar.com)
  • Some of the thousands of artifacts unearthed during the construction of the Canadian Museum for Human Rights in Winnipeg were unveiled Wednesday by archeologists and museum officials. (thestar.com)
  • He has consistently maintained innocence, claiming that he accidentally mixed museum artifacts with items from his private collection. (csmonitor.com)
  • To view or edit the settings for an artifact, select the artifact of interest, and use the Artifact page to the right of the selector pane. (jetbrains.com)
  • Use the Artifact page to configure the artifact layout, to define which activities should be performed after the artifact is built, and, optionally, to enable the use of server-specific validators. (jetbrains.com)
  • Tip Click the Apply Tags to All Artifacts button to add a set of tags to all items on the page. (oakton.edu)
  • E gypt has repatriated an artefact that had been illegally smuggled to the UK and put up for auction, the country's Antiquities Ministry has announced. (telegraph.co.uk)
  • The UAE-based dealers involved in the transactions falsely labeled the artifacts as "ceramics" and "samples" and illegally shipped them to Hobby Lobby stores and corporate affiliates in the United States, the DOJ said. (cnn.com)
  • If you want to include an existing website as an artifact in your portfolio, you can reference the address (URL) for the site rather than uploading files. (oakton.edu)
  • Although people picked up isolated artifacts as early as the 1930s ( 2 ), they assumed the findings were one-offs, not indicators of widespread use of icy territories by ancient peoples. (pnas.org)
  • BAGHDAD (AP) - Iraqi police on Tuesday seized a small cache of ancient statues and other artifacts in the south of the country that officials said were set to be smuggled out of the country and sold. (washingtontimes.com)
  • The artifacts, ancient cuneiform tablets and clay bullae, were smuggled into the United States through the United Arab Emirates and Israel, Justice officials said. (cnn.com)
  • Their reward was the discovery of artifacts, a life-size statue, "a fantastic monument and what we thought was a royal palace," said expedition leader Jonathan Kaplan, a professor of archeology at the University of New Mexico. (latimes.com)
  • The expectation is that all sections of the artifact have been completed, reviewed and approved in order to declare a baseline for the artifact. (cms.gov)
  • This small artifact had an inscription partly encircling its neck which read "Sacred donation for the priests of (in) the House of [Yahw]h," identifying it with the Temple. (athenapub.com)
  • Government officials called the bag " a rare artifact, if not a national treasure, " the Associated Press reports. (csmonitor.com)
  • Hobby Lobby agreed to forfeit thousands of artifacts from modern-day Iraq and pay a $3 million fine to resolve a civil action the Justice Department brought against the company, according to court documents. (cnn.com)
  • Bresson did not describe the artifacts being examined. (reuters.com)
  • Does we have a key to sign GridGain artifacts or I should generate it? (apache.org)
  • You can use OEPE to automatically generate various Struts artifacts for your dynamic Web project . (oracle.com)
  • Paul Allen's Flying Heritage Collection is set to unveil several new additions to its one-of-kind collection of vintage aircraft, military vehicles and other World War II artifacts. (aopa.org)
  • The Blissiana collection also contains artifacts, including photographs, digital images, books, records, music scores, and household furnishings relating to Mildred Barnes Bliss and Robert Woods Bliss. (doaks.org)
  • The two largest collections of artifacts in the South American collection are those of the Canela, collected by William Crocker, and the Krikati, Pukobye and Apinaye, collected by Dr. Dolores Newton. (si.edu)
  • Nevertheless, precisely because of the ubiquity of web-based information resources, and precisely because of their conceptual proximity to known artifacts whose archiving is well understood (i.e., books and manuscripts), looking at the web offers a comparatively powerful beginning point. (dlib.org)
  • Some of the artifacts date back to 1,100 A.D. They show on how aboriginal people lived at the Forks, the place where the Red and Assiniboine Rivers meet. (thestar.com)
  • This link will take you off the Artifacts & Fiction Website. (learner.org)
  • To return to Artifacts & Fiction , please close this window. (learner.org)
  • When questioned about the timing, he insisted there was no connection, saying he had asked the French to return the artifacts two months earlier. (nytimes.com)
  • Use this icon, command or shortcut to create a new artifact configuration. (jetbrains.com)
  • You may upload or create artifacts on any number of topics and at any stage of completion. (oakton.edu)
  • ePortfolio provides the option to create HTML artifacts using a simple HTML Editor. (oakton.edu)
  • So naturally, the Demon Prince of Technology would love to mass-produce celestial artifacts that generated Essence and were themselves cheap to create. (sjgames.com)
  • it is one of the few artifacts that a solitary Enchanter, working alone, can create. (sjgames.com)