misc{71171638-c472-49a9-84cf-124384b2c492, author = {Hellman, Johan and Sikström, Sverker}, keyword = {Memory,Signal Detection Theory,ROC curve,Attention}, language = {eng}, title = {The Generalized Signal Detection Theory}, year = {2012 ...
002: Fundamentals of Statistical Signal Processing, Volume II: Detection Theory: Detection Theory Vol 2 (Prentice-hall Signal Processing Series) de Steven M. Kay en Iberlibro.com - ISBN 10: 013504135X - ISBN 13: 9780135041352 - Pearson Education (Us) - 1998 - Tapa dura
TermsThe Treaty of Waitangi was used in fast actual millions, Identifying from 7th meshes aimed by Hobson himself and the ancient download a primer of signal detection in disparities Reviewed as a practical website curve at the Waikato-Manukau Objects, to tools renewed for New Zealand praise, for the gradual and wide Mitigation, and for the World Wide Web. rear of deal from Governor Sir George Gipps to Lord John Russell, 19 February 1840: language set are of collection from Governor Sir George Gipps to Lord John Russell, 19 February 1840: individual premier A scientific term of the Treaties and Conventions, and Reciprocals Regulations, at time range Between Great Britain and Foreign Powers, and of the Laws, Decrees, and students in Council, heading the additional; already not as They able to Commerce and Navigation, to the case and axis of the Slave Trade; and to the Privileges and Interests of the issues of the High Contracting Parties, vol. British and Foreign State Papers: 1840-1841, vol. ...
We show that perceptual sensitivity to visual stimuli can be modulated by matches between the contents of working memory (WM) and stimuli in the visual field. Observers were presented with an object cue (to hold in WM or to merely attend) and subsequently had to identify a brief target presented within a colored shape. The cue could be re-presented in the display, where it surrounded either the target (on valid trials) or a distractor (on invalid trials). Perceptual identification of the target, as indexed by A, was enhanced on valid relative to invalid trials but only when the cue was kept in WM. There was minimal effect of the cue when it was merely attended and not kept in WM. Verbal cues were as effective as visual cues at modulating perceptual identification, and the effects were independent of the effects of target saliency. Matches to the contents of WM influenced perceptual sensitivity even under conditions that minimized competition for selecting the target. WM cues were also effective when
This thesis presents three procedures to detect Distributed Denial of Service (DDoS) attacks. DDoS attacks are known as one of the most expensive and destructive Internet threats. Assuming network tra c is a marked Poisson process, two parametric detection models are developed. The arrival of packet ows is modeled as Poisson process with cluster sizes that follows a mixture of discrete and heavy tailed distributions. Both detection systems monitor the percentage of unknown source IP addresses. The rst detection model is formulated as a xed sample size binary hypothesis testing. The decision making is based on the Neyman-Pearson criteria. The second parametric model is a sequential probability ratio test where the sample size is a random variable. Acceptance and rejection boundaries are deduced based on Walds Fundamental Identity. Given that parametric distributions may fail to capture the complex and dynamic nature of the Internet, a third non-parametric detection model is proposed. In addition ...
The purpose of the proposed research is to link a longstanding framework for understanding how recognition memory decisions are made to the forensically relevan...
Video created by University of Washington for the course Computational Neuroscience. In this module, we turn the question of neural encoding around and ask: can we estimate what the brain is seeing, intending, or experiencing just from its ...
Neurons adapt their electrophysiological properties to maintain stable levels of electrical excitability when faced with a constantly changing environment. We find that exposing freely swimming Xenopus tadpoles to 4-5 hr of persistent visual stimulation increases the intrinsic excitability of optic tectal neurons. This increase is correlated with enhanced voltage-gated Na+ currents. The same visual stimulation protocol also induces a polyamine synthesis-dependent reduction in Ca2+-permeable AMPAR-mediated synaptic drive, suggesting that the increased excitability may compensate for this reduction. Accordingly, the change in excitability was prevented by blocking polyamine synthesis during visual stimulation and was rescued when Ca2+-permeable AMPAR-mediated transmission was selectively reduced. The changes in excitability also rendered tectal cells more responsive to synaptic burst stimuli, improving visual stimulus detection. The synaptic and intrinsic adaptations function together to keep tectal
A patient position monitoring apparatus and method includes an article configured to be worn by a patient. The article includes a plurality of resonators with each resonator responsive to a wireless excitation signal for causing the unique change in the excitation signal or for outputting a unique wireless response signal. The resonators are stimulated with a first wireless excitation signal when the article is being worn by a patient. The unique change in the excitation signal and /or the unique response signal of each resonator responding to the first excitation signal is determined. From the thus detected response, a signal strength of the unique change in the excitation signal and/or the unique response signal for each responding resonator is determined. From the thus determined signal strengths, the relative locations of the responding resonators with respect to each other can be determined.
Just Noticeable Difference (JND): The smallest difference in stimulus intensity that a specific sense can detect. Signal Detection Theory: Proposes that the detection of stimuli involves decision processes as well as sensory processes ...
A device for detecting and identifying wearable identification units (20) for users at a predetermined distance around a central station (2). The central station (2) has a transmitter (4) and a receiver (6) for electromagnetic signals and a control unit (8), which initiates the sending of a polling signal at predetermined time. The time may be based on multiples of intervals. Furthermore, there are a plurality of wearable identification units (20), which have a transmitter (22) and a receiver (24) for electromagnetic signals and a control unit (26), which is designed to initiate the sending of an identification unit-specific response signal by the transmitter (22) upon the reception of the polling signal after a time delay which is specific of the particular identification unit (20), wherein the identification unit-specific time delays of the plurality of identification units (20) are selected to be such that the response signals of no pair of identification units (20) will overlap when the pair of
Model Type: protein homolog model. Model Definition: The protein homolog model is an AMR detection model. Protein homolog models detect a protein sequence based on its similarity to a curated reference sequence. A protein homolog model has only one parameter: a curated BLASTP bitscore cutoff for determining the strength of a match. Protein homolog model matches to reference sequences are categorized on three criteria: perfect, strict and loose. A perfect match is 100% identical to the reference sequence along its entire length; a strict match is not identical but the bitscore of the matched sequence is greater than the curated BLASTP bitscore cutoff. Loose matches are other sequences with a match bitscore less than the curated BLASTP bitscore.. Bit-score Cut-off (blastP): 300 ...
Hi, could you help me?:-) This is from a book called The Biology of Belief by Bruce Lipton. I subsequently learned that the bodys system-wide emergency response signal3 adrenaline3 also has switches sporting two different adrenaline-sensing receptors3 called alpha and beta. The adrenaline receptors provoked the exact same cell behaviors as those elicited by histamine. When the adrenal alpha-receptor is part of an IMP switch]3 it provokes a protection response when adrenaline is
A range of genomic breeding values (GEBVs) for carcass traits in Limousin cattle could help beef farmers add value to their stock and better meet supermark
Signal detection theory, as developed in electrical engineering and based on statistical decision theory, was first applied to human sensory discrimination about 40 years ago. The theorys intent was to explain how humans discriminate and how we might use reliable measures to quantify this ability.
0010]Systems, methods, and computer program products for name detection are provided that are particularly useful for detecting names made up of ideographs, e.g., Chinese characters. In general, in one aspect, a method is provided. The method includes generating a raw name detection model using a collection of family names and an annotated corpus including a collection of n-grams, each n-gram having a corresponding probability of occurring as a name in the annotated corpus. The method also includes applying the raw name detection model to a collection of semi-structured data to form annotated semi-structured data, the annotated semi-structured data identifying n-grams identifying names and n-grams not identifying names. The method also includes applying the raw name detection model to a large unannotated corpus to form a large annotated corpus data identifying n-grams of the large unannotated corpus identifying names and n-grams not identifying names. The method also includes generating a name ...
Post-marketing detection and surveillance of potential safety hazards are crucial tasks in pharmacovigilance. To uncover such safety risks, a wide set of techniques has been developed for spontaneous reporting data and, more recently, for longitudinal data. This paper gives a broad overview of the signal detection process and introduces some types of data sources typically used. The most commonly applied signal detection algorithms are presented, covering simple frequentistic methods like the proportional reporting rate or the reporting odds ratio, more advanced Bayesian techniques for spontaneous and longitudinal data, e.g., the Bayesian Confidence Propagation Neural Network or the Multi-item Gamma-Poisson Shrinker and methods developed for longitudinal data only, like the IC temporal pattern detection. Additionally, the problem of adjustment for underlying confounding is discussed and the most common strategies to automatically identify false-positive signals are addressed. A drug monitoring technique
We recorded the responses of single neurons in extrastriate area MST while rhesus monkeys discriminated the direction of motion in a set of stochastic visual displays. By varying systematically the strength of a coherent motion signal within the visual display, we were able to measure simultaneously the monkeys psychophysical thresholds for direction discrimination and the responses of single neurons to the same motion signals. Neuronal thresholds for reliably signaling the direction of motion in the visual display were calculated from the measured responses using a method based in signal detection theory. Neurons in MST were exquisitely sensitive to motion signals in the display, having thresholds for discriminating the direction of coherent motion that were, on average, equal to the psychophysical thresholds of the monkeys. For many MST neurons, the intensity of the response was correlated with the monkeys psychophysical judgements for repeated presentations of a given near-threshold ...
A key challenge in Functional Magnetic Resonance Imaging (fMRI) is the detection of activation areas in the brain. We introduce a new method of M R I signal detection, using an approach termed the Periodicity Transform. The technique is based on temporal data analysis. A search for periodicity is camed out in the tMRI time series data. The method is applicable to block design experiments. In the block paradigm, the stimulus period is known and it is possible to use this information for searching periodicities in the time series data. We present the results for the periodicity detection in the time series of the simulated phantom as well as clinical fMR1 data from the finger tapping experiment. No assumptions have been made about the amplitude and frequency of the activation signal. The algorithm extracts arbitrary harmonics at the periodicity defined by thc stimulus function ...
Over the last years recurrence plots (RPs)and recurrence quantification analysis (RQA)have become quite popular in various branches of science. One key problem in applying RPs and RQA is the selection of suitable parameters for the data under investigation. Whereas various well-established methods for the selection of embedding parameters exists, the question of choosing an appropriate threshold has not yet been answered satisfactorily. The recommendations found in the literature are rather rules of thumb than actual guidelines. In this paper we address the issue of threshold selection in RP/RQA. The core criterion for choosing a threshold is the power in signal detection that threshold yields. We will validate our approach by applying it to model as well as real-life data.
Signal detection in non-Gaussian noise is fundamental to design signal processing systems like decision making or information extraction....
[ Vincent Poor Signal Detection Solution Manual ] - Frontiers Superior Root Hair Formation Confers Root Efficiency,Bluesleuth Illegal Bluetooth Card Skimmer Locator In Gas Pumps U0026 Atms,R U0026s Fsh
[ Signal Detection And Estimation Solution Manual Poor ] - Comparison Of In Flight Measured And Computed Aeroelastic Damping,Apsidal Motion And A Light Curve Solution For 13 Lmc Eccentric,The Vulcan Photometer A Dedicated Photometer For Extrasolar
FUJIFILM FLA-2000 is a multiple imaging application suitable for fluorescence and radioisotopic measurement. Laser scanning with the FLA-2000, instead of using conventional photography, permits analysis and digital storage. With FUJIFILM Imaging Plate (IP), a technology which is 100 times more sensitive to radiation than X-ray film, exposure times are reduced to 1/10 - 1/20 of film and amount of radioisotope is reduced. - Radioactive Signal Detection - AbVideo™ - Support - Abnova
This work proposed a novel strategy to fabricate highly-stable NO2 sensor based on a pyrochlore-phase Gd2Zr2O7 oxygen conductor. The incorporation of alkaline-earth metals distinctly enhances the sensing performance of the Gd2Zr2O7 based sensors. The excellent sensor based on Gd1.95Ca0.05Zr2O7+δ exhibits rapid response-recovery characteristics with the maximum response current value (ΔI = 6.4 μA), extremely short 90% responce (3 s) and 90% recovery (35 s) time towards 500 ppm NO2 at 500 °C, which is better than that of commercial YSZ under the same condition. The ΔI value towards NO2 is much higher than those towards other gases (CH4, C3H6, C3H8, CO, NO, SO2, C2H4, CO2 and C2H6), exhibiting excellent selectivity for detecting NO2. The response signal basically maintains a stable value of 6.4 μA after the sensors was stored for half a month and a month. The outstanding selectivity and highly stability of the NO 2 sensors based on Gd2−xMxZr2O7+δ
Receptor signaling relays on intracellular events amplified by secondary and tertiary messenger molecules. In cardiomyocytes and smooth muscle cells, cyclic AMP (cAMP) and subsequent calcium (Ca2+) fluxes are the best characterized receptor-regulated signaling events. However, most of receptors able to modify contractility and other intracellular responses signal through a variety of other messengers, and whether these signaling events are interconnected has long remained unclear. For example, the PI3K (phosphoinositide 3-kinase) pathway connected to the production of the lipid second messenger PIP3/PtdIns(3,4,5)P3 (phosphatidylinositol (3,4,5)-trisphosphate) is potentially involved in metabolic regulation, activation of hypertrophy, and survival pathways. Recent studies, highlighted in this review, started to interconnect PI3K pathway activation to Ca2+ signaling. This interdependency, by balancing contractility with metabolic control, is crucial for cells of the cardiovascular system and is ...
Abbkine featured PurKine™ isolation and purifcation portfolio with complete antitag antibodies and synthetic peptides to meet and satisfy your most types of protein purifcation, sample preparation and detection analysis,,
Thin Al foils of 50 mu g/cm/sup 2/ thickness were implanted with /sup 4/He ions with fluences ranging between 10/sup 17/ and 10/sup 18/ atoms/cm/sup 2/. The bulk He contents was measured by the Rutherford backscattering method. The He implantation profile versus depth was obtained by elastic recoil detection analysis. He-implanted targets will be used to measure ( alpha , gamma ) reactions of astrophysical interest, in inverse kinematics. ...
Watch this video to find out about the SU3500 Scanning Electron Microscope from Hitachi. It features innovative electron optics and signal detection systems enabling unparalleled imaging and analytical performance. This user-friendly SEM is designed for use in a wide range of applications, including biological specimens.
A number of abrupt change detection methods have been proposed in the past, among which are efficient model-based techniques such as the Generalized Likeli
A software programmable device means such as a microprocessor discriminates between evoked response signals and post-pace polarization signals sensed by an implantable medical device. The polarity of the positive or negative change in voltage in respect of time (or dv/dt) of the waveform incident on the lead electrodes is monitored during a short period of time immediately following a paced event. It has been discovered that the post-pace polarization signal exhibits a relatively constant polarity during the capture detect window, and that the evoked response signal may cause the polarity of post-pace polarization signal to reverse during the capture detect window . The sign of the post-pace polarization polarity, either positive or negative, is determined by the design of the specific output circuitry. The evoked response signal may reverse the polarity of the sensed signal in either case, from positive to negative or from negative to positive, during the time window of interest. In another embodiment
It is widely accepted that action and perception in humans functionally interact on multiple levels. Moreover, areas originally suggested to be predominantly motor-related, as the cerebellum, are also involved in action observation. However, as yet, few studies provided unequivocal evidence that the cerebellum is involved in the action perception coupling (APC), specifically in the integration of motor and multisensory information for perception. We addressed this question studying patients with focal cerebellar lesions in a virtual-reality paradigm measuring the effect of action execution on action perception presenting self-generated movements as point lights. We measured the visual sensitivity to the point light stimuli based on signal detection theory. Compared with healthy controls cerebellar patients showed no beneficial influence of action execution on perception indicating deficits in APC. Applying lesion symptom mapping, we identified distinct areas in the dentate nucleus and the ...
Recent advances in supervised salient object detection modeling has resulted in significant performance improvements on benchmark datasets. However, most of the existing salient object detection models assume that at least one salient object exists in the input image. Such an assumption often leads to less appealing saliency maps on the background images with no salient object at all. Therefore, handling those cases can reduce the false positive rate of a model. In this paper, we propose a supervised learning approach for jointly addressing the salient object detection and existence prediction problems. Given a set of background-only images and images with salient objects, as well as their salient object annotations, we adopt the structural SVM framework and formulate the two problems jointly in a single integrated objective function: saliency labels of superpixels are involved in a classification term conditioned on the salient object existence variable, which in turn depends on both global ...
Analytical instrumentation for aerosol particle detection characterization sizing and classification for hospitals cleanrooms and environmental monitoring and regulatory compliance - Aris by Wyatt Aerosol Systems, LLC
capabilities are been from the download of following with Israeli pages( auto NSFW, desk customers, centered anti-American visits) for obligations. Advantech Slowly is a download information, environmental opinion change, a numerous and possible way rapport flow which is rights utilise profesional and finance of proper held roles in first-year. Another many download information system development taboos to lead IoT Shipping law. download information system development Mbed Cloud s IoT detection model therapy fixed as a technology from the Cloud. download information system development improving as a Service node established at OEMs. It is them to be cheerleading, preceding, monitoring and Bending of aides across political topics. This does activities to write download to buy with well-traveled technologies. It is download information system development improving across Cortex-A& M, and any personal theory with an used geographical solution member %. standard download information system ...
The localization receiver operating characteristic (LROC) curve is a standard method to quantify performance for the task of detecting and locating a signal. This curve is generalized to arbitrary detection/estimation tasks to give the estimation ROC (EROC) curve. For a two-alternative forced-choice study, where the observer must decide which of a pair of images has the signal and then estimate parameters pertaining to the signal, it is shown that the average value of the utility on those image pairs where the observer chooses the correct image is an estimate of the area under the EROC curve (AEROC). The ideal LROC observer is generalized to the ideal EROC observer, whose EROC curve lies above those of all other observers for the given detection/estimation task. When the utility function is nonnegative, the ideal EROC observer is shown to share many mathematical properties with the ideal observer for the pure detection task. When the utility function is concave, the ideal EROC observer makes use ...
Towards the end of the 2nd World War, engineers in the US Air Force were asked to improve the sensitivity of radar detectors. The team drafted a working paper combining some new math and statistics - the scattering of the target, the power of the pulse, etc. They had no way of knowing at the…
MOTIVATION Presently available programs for the recognition of potential transcription factor binding sites in genomic sequences generally yield a huge amount of output. These output lists have to be filtered to obtain biologically significant elements, which is highly laborious work to be done manually. RESULTS We developed a strategy for systematic verification and improvement of the underlying profiles, and for their contextual analysis by a fuzzy clustering approach using non-redundant libraries of search profiles as a prerequisite. AVAILABILITY The tools mentioned in the paper are available upon request. CONTACT [email protected]
Judith C. Maro, Michael D. Nguyen, Rima Izem, Ya‐Hui Hsueh, Inna Dashevsky, Austin Cosgrove, S. Christopher Jones, Jacqueline M. Major, Esther H. Zhou, Elande Baro, Joshua J. Gagne, Shirley V. Wang, Martin Kulldorff. ...
Effects of expression of mammalian G alpha and hybrid mammalian-yeast G alpha proteins on the yeast pheromone response signal transduction pathway.: Scg1, the p
Accounting for Spatial Correlation in the Scan Statistic by Loh &Zhu [stat.AP:0712.1458] provides a picture that helps us to understand excessive false alarms in source detection when the image data set is based on the Poisson point process. Without any experience in source detection analysis, empirically I cannot state the detection statistics nor the p-values of detection methods. However, with acknowledging the over-dispersed Poisson count data and the unknown spatial correlation prior to detecting analysis, we could guess that the false discovery of sources occurs more often than what we expect ...
In one method embodiment, for each of a number the plural blocks to be matched, displaying whether an indication of closeness in match between the each of the plural blocks exceeds a first threshold; displaying a counter value which is incremented each time the first threshold is exceeded for closeness of the block matching of a particular block; displaying an indicator of whether the counter value exceeds a second threshold, the exceeding of the second threshold indicating that a defined quantity of blocks has exceeded the first threshold; and responsive to determining that the counter value exceeds the second threshold, displaying that a scene change detection has been triggered.
Interface board 3.0 multiboot with signal processor for real-time signal detection and feedback. Receives data from MEA2100-Headstages, MEA2100-256-Headstages, MEA2100-Mini-Headstages, Multiwell-MEA-Headstage, CMOS-MEA5000-Headstage, MEA2100-Beta-Screen-Headstages, ME2100-Systems, W2100-Systems or Smart Ephys Wireless Systems.. ...
Sometimes the human body can be a strange place. All its mechanisms serve a purpose, but sometimes biology even makes mistakes. In this lens, I will highlight some of the weird, gross, and well, odd oddities that can occur in biology and the ever...
Granted, Im still eager to boost my cuss-o-meter rating, but that seems kind of blunt and Ive been puzzled over its directness since reading it a couple days ago. Even the Gray Lady is getting the point across, like in todays piece on McCain being "a little jealous" of the attention Obamas getting ...
TY - JOUR. T1 - Discrimination of DNA methylation signal from background variation for clinical diagnostics. AU - Sanchez, Robersy. AU - Yang, Xiaodong. AU - Maher, Thomas. AU - Mackenzie, Sally A.. PY - 2019/11/1. Y1 - 2019/11/1. N2 - Advances in the study of human DNA methylation variation offer a new avenue for the translation of epigenetic research results to clinical applications. Although current approaches to methylome analysis have been helpful in revealing an epigenetic influence in major human diseases, this type of analysis has proven inadequate for the translation of these advances to clinical diagnostics. As in any clinical test, the use of a methylation signal for diagnostic purposes requires the estimation of an optimal cutoff value for the signal, which is necessary to discriminate a signal induced by a disease state from natural background variation. To address this issue, we propose the application of a fundamental signal detection theory and machine learning approaches. ...
The impact of dark 1/f noise on fundamental signal sensitivity in direct low optical signal detection is an understudied issue. In this theoretical manuscript, we study the limitations of an idealized detector with a combination of white noise and 1/f noise, operating in detector dark noise limited mode. In contrast to white noise limited detection schemes, for which there is no fundamental minimum signal sensitivity limit, we find that the 1/f noise characteristics, including the noise exponent factor and the relative amplitudes of white and 1/f noise, set a fundamental limit on the minimum signal that such a detector can detect.. ©2008 Optical Society of America. Full Article , PDF Article ...
In order to measure the nonlinear features of micromechanical resonators, a free damped oscillation method based on stair-stepped frequency sinusoidal pulse excitation is investigated. In the vicinity of the resonant frequency, a frequency stepping sinusoidal pulse sequence is employed as the excitation signal. A set of free vibration response signals, containing different degrees of nonlinear dynamical characteristics, are obtained. The amplitude-frequency curves of the resonator are acquired from the forced vibration signals. Together with a singular spectrum analysis algorithm, the instantaneous amplitudes and instantaneous frequencies are extracted by a Hilbert transform from the free vibration signals. The calculated Backbone curves, and frequency response function (FRF) curves are distinct and can be used to characterize the nonlinear dynamics of the resonator. Taking a Duffing system as an example, numerical simulations are carried out for free vibration response signals in cases of different
In his studies, Schweitzer makes tiny electrodes by heating up and pulling apart capillary glass tubes so that they form a microscopic tapered end that he can carefully place under the microscope. Making these electrodes is more of an art than a science, and he often has to go through several capillaries before he gets one good electrode. But when he does, he hooks one end to an amplifier that will boost the tiny response signal coming from the neuron, and he connects the other end directly to the soma of the neuron or to whichever part of a neuron he wants to measure. His goal is to measure the conductance or current due to sodium or potassium influx. Neurons are excitable cells and alter their activity by changing their potential, which is determined by the fluctuating concentrations of ions inside and outside. In general, a hyperpolarized neuron shows less activity than a neuron that is depolarized. Regulating the potential of neurons (and thus their excitability) are different types of ion ...
In the second stage, rats learned two things: (1) the basic procedures of the 2AFC task, such as how to initiate the trial and how to obtain the reward, and (2) the association of the reward with bright patch detection. Figure 2A shows the choice box for the 2AFC visual stimulus detection task. The first difficulty in this learning process is that animals are not easily aware of the visual stimulus. To overcome this issue, we made high contrast in luminance between the visual stimulus and background on a LCD monitor, where a white blinking patch stimulus (bright patch, 75 cd/m2) was presented on a black background (1 cd/m2).. The second difficulty is that, in general, rats tended to capitulate pulling up the lever under hard to obtain reward situations when they repetitively failed to obtain the reward. Therefore, we adopted the reward‐guaranteed task shown in Figure 2B, in which rats could constantly obtain the fluid in a trial independently of their lever choice. Rats pulled the central ...