An increase in the rate of speed.
The properties, processes, and behavior of biological systems under the action of mechanical forces.
A gelatinous membrane overlying the acoustic maculae of SACCULE AND UTRICLE. It contains minute crystalline particles (otoliths) of CALCIUM CARBONATE and protein on its outer surface. In response to head movement, the otoliths shift causing distortion of the vestibular hair cells which transduce nerve signals to the BRAIN for interpretation of equilibrium.
A decrease in the rate of speed.
Acceleration produced by the mutual attraction of two masses, and of magnitude inversely proportional to the square of the distance between the two centers of mass. It is also the force imparted by the earth, moon, or a planet to an object near its surface. (From NASA Thesaurus, 1988)
A reflex wherein impulses are conveyed from the cupulas of the SEMICIRCULAR CANALS and from the OTOLITHIC MEMBRANE of the SACCULE AND UTRICLE via the VESTIBULAR NUCLEI of the BRAIN STEM and the median longitudinal fasciculus to the OCULOMOTOR NERVE nuclei. It functions to maintain a stable retinal image during head rotation by generating appropriate compensatory EYE MOVEMENTS.
Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A continuing periodic change in displacement with respect to a fixed reference. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans.
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.
An oval, bony chamber of the inner ear, part of the bony labyrinth. It is continuous with bony COCHLEA anteriorly, and SEMICIRCULAR CANALS posteriorly. The vestibule contains two communicating sacs (utricle and saccule) of the balancing apparatus. The oval window on its lateral wall is occupied by the base of the STAPES of the MIDDLE EAR.
Process whereby a cell, bodily structure, or organism (animal or plant) receives or detects a gravity stimulus. Gravity sensing plays an important role in the directional growth and development of an organism (GRAVITROPISM).
The storing or preserving of video signals for television to be played back later via a transmitter or receiver. Recordings may be made on magnetic tape or discs (VIDEODISC RECORDING).
Three long canals (anterior, posterior, and lateral) of the bony labyrinth. They are set at right angles to each other and are situated posterosuperior to the vestibule of the bony labyrinth (VESTIBULAR LABYRINTH). The semicircular canals have five openings into the vestibule with one shared by the anterior and the posterior canals. Within the canals are the SEMICIRCULAR DUCTS.
An activity in which the body is propelled by moving the legs rapidly. Running is performed at a moderate to rapid pace and should be differentiated from JOGGING, which is performed at a much slower pace.
Elements of limited time intervals, contributing to particular results or situations.
The position or attitude of the body.
Manner or style of walking.
The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
Condition wherein the force of gravity is greater than or is increased above that on the surface of the earth. This is expressed as being greater than 1 g.
The apparent deflection (Coriolis acceleration) of a body in motion with respect to the earth, as seen by an observer on the earth, attributed to a fictitious force (Coriolis force) but actually caused by the rotation of the earth. In a medical context it refers to the physiological effects (nausea, vertigo, dizziness, etc.) felt by a person moving radially in a rotating system, as a rotating space station. (From Random House Unabridged Dictionary, 2d ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The rate dynamics in chemical or physical systems.
Voluntary or reflex-controlled movements of the eye.
Recording of the changes in electric potential of muscle by means of surface or needle electrodes.
The vestibular part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The vestibular nerve fibers arise from neurons of Scarpa's ganglion and project peripherally to vestibular hair cells and centrally to the VESTIBULAR NUCLEI of the BRAIN STEM. These fibers mediate the sense of balance and head position.
Movement or the ability to move from one place or another. It can refer to humans, vertebrate or invertebrate animals, and microorganisms.
Qualitative and quantitative measurement of MOVEMENT patterns.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
A POSTURE in which an ideal body mass distribution is achieved. Postural balance provides the body carriage stability and conditions for normal functions in stationary position or in movement, such as sitting, standing, or walking.
The use of wings or wing-like appendages to remain aloft and move through the air.
The real or apparent movement of objects through the visual field.
An activity in which the body is propelled through water by specific movement of the arms and/or the legs. Swimming as propulsion through water by the movement of limbs, tail, or fins of animals is often studied as a form of PHYSICAL EXERTION or endurance.
Eye movements that are slow, continuous, and conjugate and occur when a fixed object is moved slowly.
Personal devices for protection of heads from impact, penetration from falling and flying objects, and from limited electric shock and burn.
Recorded electrical responses from muscles, especially the neck muscles or muscles around the eyes, following stimulation of the EAR VESTIBULE.
The use of electronic equipment to observe or record physiologic processes while the patient undergoes normal daily activities.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.
Water waves caused by the gravitational interactions between the EARTH; MOON; and SUN.
An occupational disorder resulting from prolonged exposure to vibration, affecting the fingers, hands, and forearms. It occurs in workers who regularly use vibrating tools such as jackhammers, power chain saws, riveters, etc. Symptoms include episodic finger blanching, NUMBNESS, tingling, and loss of nerve sensitivity.
Methods of creating machines and devices.
The four cellular masses in the floor of the fourth ventricle giving rise to a widely dispersed special sensory system. Included is the superior, medial, inferior, and LATERAL VESTIBULAR NUCLEUS. (From Dorland, 27th ed)
The region of the upper limb between the metacarpus and the FOREARM.
Computer-based representation of physical systems and phenomena such as chemical processes.
Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.
Hyperextension injury to the neck, often the result of being struck from behind by a fast-moving vehicle, in an automobile accident. (From Segen, The Dictionary of Modern Medicine, 1992)
Also known as articulations, these are points of connection between the ends of certain separate bones, or where the borders of other bones are juxtaposed.
Four or five slender jointed digits in humans and primates, attached to each HAND.
An activity in which the body advances at a slow to moderate pace by moving the feet in a coordinated fashion. This includes recreational walking, walking for fitness, and competitive race-walking.
Pathological processes of the VESTIBULAR LABYRINTH which contains part of the balancing apparatus. Patients with vestibular diseases show instability and are at risk of frequent falls.
Two membranous sacs within the vestibular labyrinth of the INNER EAR. The saccule communicates with COCHLEAR DUCT through the ductus reuniens, and communicates with utricle through the utriculosaccular duct from which the ENDOLYMPHATIC DUCT arises. The utricle and saccule have sensory areas (acoustic maculae) which are innervated by the VESTIBULAR NERVE.
Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
The neck muscles consist of the platysma, splenius cervicis, sternocleidomastoid(eus), longus colli, the anterior, medius, and posterior scalenes, digastric(us), stylohyoid(eus), mylohyoid(eus), geniohyoid(eus), sternohyoid(eus), omohyoid(eus), sternothyroid(eus), and thyrohyoid(eus).
Either of two extremities of four-footed non-primate land animals. It usually consists of a FEMUR; TIBIA; and FIBULA; tarsals; METATARSALS; and TOES. (From Storer et al., General Zoology, 6th ed, p73)
A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.
Sensory functions that transduce stimuli received by proprioceptive receptors in joints, tendons, muscles, and the INNER EAR into neural impulses to be transmitted to the CENTRAL NERVOUS SYSTEM. Proprioception provides sense of stationary positions and movements of one's body parts, and is important in maintaining KINESTHESIA and POSTURAL BALANCE.
The superior part of the upper extremity between the SHOULDER and the ELBOW.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrinthine and the membranous labyrinth. The bony labyrinth is a complex of three interconnecting cavities or spaces (COCHLEA; VESTIBULAR LABYRINTH; and SEMICIRCULAR CANALS) in the TEMPORAL BONE. Within the bony labyrinth lies the membranous labyrinth which is a complex of sacs and tubules (COCHLEAR DUCT; SACCULE AND UTRICLE; and SEMICIRCULAR DUCTS) forming a continuous space enclosed by EPITHELIUM and connective tissue. These spaces are filled with LABYRINTHINE FLUIDS of various compositions.
Traumatic injuries to the cranium where the integrity of the skull is not compromised and no bone fragments or other objects penetrate the skull and dura mater. This frequently results in mechanical injury being transmitted to intracranial structures which may produce traumatic brain injuries, hemorrhage, or cranial nerve injury. (From Rowland, Merritt's Textbook of Neurology, 9th ed, p417)
Involuntary rhythmical movements of the eyes in the normal person. These can be naturally occurring as in end-position (end-point, end-stage, or deviational) nystagmus or induced by the optokinetic drum (NYSTAGMUS, OPTOKINETIC), caloric test, or a rotating chair.
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.
The distal part of the arm beyond the wrist in humans and primates, that includes the palm, fingers, and thumb.
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.
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
The time from the onset of a stimulus until a response is observed.
The entities of matter and energy, and the processes, principles, properties, and relationships describing their nature and interactions.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
The sole family in the order Sphenisciformes, comprised of 17 species of penguins in six genera. They are flightless seabirds of the Southern Hemisphere, highly adapted for marine life.
A competitive team sport played on a rectangular field. This is the American or Canadian version of the game and also includes the form known as rugby. It does not include non-North American football (= SOCCER).
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
A usually four-wheeled automotive vehicle designed for passenger transportation and commonly propelled by an internal-combustion engine using a volatile fuel. (Webster, 1973)
The central part of the body to which the neck and limbs are attached.
The coordination of a sensory or ideational (cognitive) process and a motor activity.
Contractile activity of the MYOCARDIUM.
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.
That branch of medicine dealing with the studies and effects of flight through the atmosphere or in space upon the human body and with the prevention or cure of physiological or psychological malfunctions arising from these effects. (from NASA Thesaurus)
Information application based on a variety of coding methods to minimize the amount of data to be stored, retrieved, or transmitted. Data compression can be applied to various forms of data, such as images and signals. It is used to reduce costs and increase efficiency in the maintenance of large volumes of data.
A species of the genus MACACA inhabiting India, China, and other parts of Asia. The species is used extensively in biomedical research and adapts very well to living with humans.
Innate response elicited by sensory stimuli associated with a threatening situation, or actual confrontation with an enemy.
Large aggregates of CELESTIAL STARS; COSMIC DUST; and gas. (From McGraw Hill Dictionary of Scientific and Technical Terms, 6th ed)
A genus of long-legged, swift-moving felines (FELIDAE) from Africa (and formerly Asia) about the size of a small leopard.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
A system in which the functions of the man and the machine are interrelated and necessary for the operation of the system.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
A nonspecific term used to describe transient alterations or loss of consciousness following closed head injuries. The duration of UNCONSCIOUSNESS generally lasts a few seconds, but may persist for several hours. Concussions may be classified as mild, intermediate, and severe. Prolonged periods of unconsciousness (often defined as greater than 6 hours in duration) may be referred to as post-traumatic coma (COMA, POST-HEAD INJURY). (From Rowland, Merritt's Textbook of Neurology, 9th ed, p418)
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.
Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.
Transmission of the readings of instruments to a remote location by means of wires, radio waves, or other means. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
An activity in which the organism plunges into water. It includes scuba and bell diving. Diving as natural behavior of animals goes here, as well as diving in decompression experiments with humans or animals.
Act of eliciting a response from a person or organism through physical contact.
Sensory cells in the acoustic maculae with their apical STEREOCILIA embedded in a gelatinous OTOLITHIC MEMBRANE. These hair cells are stimulated by the movement of otolithic membrane, and impulses are transmitted via the VESTIBULAR NERVE to the BRAIN STEM. Hair cells in the saccule and those in the utricle sense linear acceleration in vertical and horizontal directions, respectively.
Use of electric potential or currents to elicit biological responses.
Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. (From NASA Thesaurus, 1988)
The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris.
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.
The physical activity of a human or an animal as a behavioral phenomenon.
Theoretical representations that simulate the behavior or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Transport of the OVUM or fertilized ovum (ZYGOTE) from the mammalian oviduct (FALLOPIAN TUBES) to the site of EMBRYO IMPLANTATION in the UTERUS.
A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.
Process of using a rotating machine to generate centrifugal force to separate substances of different densities, remove moisture, or simulate gravitational effects. It employs a large motor-driven apparatus with a long arm, at the end of which human and animal subjects, biological specimens, or equipment can be revolved and rotated at various speeds to study gravitational effects. (From Websters, 10th ed; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
The hollow, muscular organ that maintains the circulation of the blood.
The study of those aspects of energy and matter in terms of elementary principles and laws. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The rear surface of an upright primate from the shoulders to the hip, or the dorsal surface of tetrapods.
The physical state of supporting an applied load. This often refers to the weight-bearing bones or joints that support the body's weight, especially those in the spine, hip, knee, and foot.
The measurement of magnetic fields generated by electric currents from the heart. The measurement of these fields provides information which is complementary to that provided by ELECTROCARDIOGRAPHY.
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.
A class of devices combining electrical and mechanical components that have at least one of the dimensions in the micrometer range (between 1 micron and 1 millimeter). They include sensors, actuators, microducts, and micropumps.
The rotational force about an axis that is equal to the product of a force times the distance from the axis where the force is applied.
Determination of the quantity of a material present in a mixture by measurement of its effect on the electrical conductivity of the mixture. (Webster, 3d ed)
The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.
Surface resistance to the relative motion of one body against the rubbing, sliding, rolling, or flowing of another with which it is in contact.
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.
A change in, or manipulation of, gravitational force. This may be a natural or artificial effect.
Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.
A number of tests used to determine if the brain or balance portion of the inner ear are causing dizziness.
The hemodynamic and electrophysiological action of the HEART VENTRICLES.
Monitoring of FETAL HEART frequency before birth in order to assess impending prematurity in relation to the pattern or intensity of antepartum UTERINE CONTRACTION.
Awareness of oneself in relation to time, place and person.
The distal extremity of the leg in vertebrates, consisting of the tarsus (ANKLE); METATARSUS; phalanges; and the soft tissues surrounding these bones.
Equipment required for engaging in a sport (such as balls, bats, rackets, skis, skates, ropes, weights) and devices for the protection of athletes during their performance (such as masks, gloves, mouth pieces).
Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.
Restoration of integrity to traumatized tissue.
Locomotor behavior not involving a steering reaction, but in which there may be a turning random in direction. It includes orthokinesis, the rate of movement and klinokinesis, the amount of turning, which are related to the intensity of stimulation.
A family of hoofed MAMMALS consisting of HORSES, donkeys, and zebras. Members of this family are strict herbivores and can be classified as either browsers or grazers depending on how they feed.
The projecting part on each side of the body, formed by the side of the pelvis and the top portion of the femur.
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
Automotive safety devices consisting of a bag designed to inflate upon collision and prevent passengers from pitching forward. (American Heritage Dictionary, 1982)
Four clusters of neurons located deep within the WHITE MATTER of the CEREBELLUM, which are the nucleus dentatus, nucleus emboliformis, nucleus globosus, and nucleus fastigii.
The most diversified of all fish orders and the largest vertebrate order. It includes many of the commonly known fish such as porgies, croakers, sunfishes, dolphin fish, mackerels, TUNA, etc.
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The two dissimilar sized ribonucleoprotein complexes that comprise a RIBOSOME - the large ribosomal subunit and the small ribosomal subunit. The eukaryotic 80S ribosome is composed of a 60S large subunit and a 40S small subunit. The bacterial 70S ribosome is composed of a 50S large subunit and a 30S small subunit.
Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.
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)
Disorder caused by motion, as sea sickness, train sickness, car sickness, air sickness, or SPACE MOTION SICKNESS. It may include nausea, vomiting and dizziness.
Normal nystagmus produced by looking at objects moving across the field of vision.
Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN.
An oviparous burrowing mammal of the order Monotremata native to Australia, Tasmania, and New Guinea. It has hair mingled with spines on the upper part of the body and is adapted for feeding on ants.
Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.
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.
The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
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)
The posterior part of the temporal bone. It is a projection of the petrous bone.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
The study of systems which respond disproportionately (nonlinearly) to initial conditions or perturbing stimuli. Nonlinear systems may exhibit "chaos" which is classically characterized as sensitive dependence on initial conditions. Chaotic systems, while distinguished from more ordered periodic systems, are not random. When their behavior over time is appropriately displayed (in "phase space"), constraints are evident which are described by "strange attractors". Phase space representations of chaotic systems, or strange attractors, usually reveal fractal (FRACTALS) self-similarity across time scales. Natural, including biological, systems often display nonlinear dynamics and chaos.
A relatively common sequela of blunt head injury, characterized by a global disruption of axons throughout the brain. Associated clinical features may include NEUROBEHAVIORAL MANIFESTATIONS; PERSISTENT VEGETATIVE STATE; DEMENTIA; and other disorders.

Visual motion analysis for pursuit eye movements in area MT of macaque monkeys. (1/829)

We asked whether the dynamics of target motion are represented in visual area MT and how information about image velocity and acceleration might be extracted from the population responses in area MT for use in motor control. The time course of MT neuron responses was recorded in anesthetized macaque monkeys during target motions that covered the range of dynamics normally seen during smooth pursuit eye movements. When the target motion provided steps of target speed, MT neurons showed a continuum from purely tonic responses to those with large transient pulses of firing at the onset of motion. Cells with large transient responses for steps of target speed also had larger responses for smooth accelerations than for decelerations through the same range of target speeds. Condition-test experiments with pairs of 64 msec pulses of target speed revealed response attenuation at short interpulse intervals in cells with large transient responses. For sinusoidal modulation of target speed, MT neuron responses were strongly modulated for frequencies up to, but not higher than, 8 Hz. The phase of the responses was consistent with a 90 msec time delay between target velocity and firing rate. We created a model that reproduced the dynamic responses of MT cells using divisive gain control, used the model to visualize the population response in MT to individual stimuli, and devised weighted-averaging computations to reconstruct target speed and acceleration from the population response. Target speed could be reconstructed if each neuron's output was weighted according to its preferred speed. Target acceleration could be reconstructed if each neuron's output was weighted according to the product of preferred speed and a measure of the size of its transient response.  (+info)

Velocity associated characteristics of force production in college weight lifters. (2/829)

OBJECTIVE: To determine velocity specific isokinetic forces and cross sectional areas of reciprocal muscle groups in Olympic weight lifters. METHODS: The cross sectional area of the flexor or extensor muscles of the elbow or knee joint was determined by a B-mode ultrasonic apparatus in 34 college weight lifters and 31 untrained male subjects matched for age. Maximum voluntary force produced in the flexion and extension of the elbow and knee joints was measured on an isokinetic dynamometer at 60, 180, and 300 degrees/s. RESULTS: The average cross sectional area was 31-65% higher, and the force was 19-62% higher in weight lifters than in the untrained subjects. The ratio of force to cross sectional area was the same in both groups. The weight lifters showed a lower velocity associated decline in force than untrained subjects in the elbow and knee flexors but not in the extensors. CONCLUSIONS: These results indicate that for muscle contractions with velocities between 60 degrees/s and 300 degrees/s the difference in isokinetic force between weight lifters and untrained subjects can be primarily attributed to the difference in the muscle cross sectional area. However, the lower velocity associated decline in force implies that weight lifters may have a higher force per cross sectional area than untrained subjects at velocities above 300 degrees/s.  (+info)

Effects of tilt of the gravito-inertial acceleration vector on the angular vestibuloocular reflex during centrifugation. (3/829)

Effects of tilt of the gravito-inertial acceleration vector on the angular vestibuloocular reflex during centrifugation. Interaction of the horizontal linear and angular vestibuloocular reflexes (lVOR and aVOR) was studied in rhesus and cynomolgus monkeys during centered rotation and off-center rotation at a constant velocity (centrifugation). During centered rotation, the eye velocity vector was aligned with the axis of rotation, which was coincident with the direction of gravity. Facing and back to motion centrifugation tilted the resultant of gravity and linear acceleration, gravito-inertial acceleration (GIA), inducing cross-coupled vertical components of eye velocity. These components were upward when facing motion and downward when back to motion and caused the axis of eye velocity to reorient from alignment with the body yaw axis toward the tilted GIA. A major finding was that horizontal time constants were asymmetric in each monkey, generally being longer when associated with downward than upward cross coupling. Because of these asymmetries, accurate estimates of the contribution of the horizontal lVOR could not be obtained by simply subtracting horizontal eye velocity profiles during facing and back to motion centrifugation. Instead, it was necessary to consider the effects of GIA tilts on velocity storage before attempting to estimate the horizontal lVOR. In each monkey, the horizontal time constant of optokinetic after-nystagmus (OKAN) was reduced as a function of increasing head tilt with respect to gravity. When variations in horizontal time constant as a function of GIA tilt were included in the aVOR model, the rising and falling phases of horizontal eye velocity during facing and back to motion centrifugation were closely predicted, and the estimated contribution of the compensatory lVOR was negligible. Beating fields of horizontal eye position were unaffected by the presence or magnitude of linear acceleration during centrifugation. These conclusions were evaluated in animals in which the low-frequency aVOR was abolished by canal plugging, isolating the contribution of the lVOR. Postoperatively, the animals had normal ocular counterrolling and horizontal eye velocity modulation during off-vertical axis rotation (OVAR), suggesting that the otoliths were intact. No measurable horizontal eye velocity was elicited by centrifugation with angular accelerations +info)

Vertical eye position-dependence of the human vestibuloocular reflex during passive and active yaw head rotations. (4/829)

Vertical eye position-dependence of the human vestibuloocular reflex during passive and active yaw head rotations. The effect of vertical eye-in-head position on the compensatory eye rotation response to passive and active high acceleration yaw head rotations was examined in eight normal human subjects. The stimuli consisted of brief, low amplitude (15-25 degrees ), high acceleration (4,000-6,000 degrees /s2) yaw head rotations with respect to the trunk (peak velocity was 150-350 degrees /s). Eye and head rotations were recorded in three-dimensional space using the magnetic search coil technique. The input-output kinematics of the three-dimensional vestibuloocular reflex (VOR) were assessed by finding the difference between the inverted eye velocity vector and the head velocity vector (both referenced to a head-fixed coordinate system) as a time series. During passive head impulses, the head and eye velocity axes aligned well with each other for the first 47 ms after the onset of the stimulus, regardless of vertical eye-in-head position. After the initial 47-ms period, the degree of alignment of the eye and head velocity axes was modulated by vertical eye-in-head position. When fixation was on a target 20 degrees up, the eye and head velocity axes remained well aligned with each other. However, when fixation was on targets at 0 and 20 degrees down, the eye velocity axis tilted forward relative to the head velocity axis. During active head impulses, the axis tilt became apparent within 5 ms of the onset of the stimulus. When fixation was on a target at 0 degrees, the velocity axes remained well aligned with each other. When fixation was on a target 20 degrees up, the eye velocity axis tilted backward, when fixation was on a target 20 degrees down, the eye velocity axis tilted forward. The findings show that the VOR compensates very well for head motion in the early part of the response to unpredictable high acceleration stimuli-the eye position- dependence of the VOR does not become apparent until 47 ms after the onset of the stimulus. In contrast, the response to active high acceleration stimuli shows eye position-dependence from within 5 ms of the onset of the stimulus. A model using a VOR-Listing's law compromise strategy did not accurately predict the patterns observed in the data, raising questions about how the eye position-dependence of the VOR is generated. We suggest, in view of recent findings, that the phenomenon could arise due to the effects of fibromuscular pulleys on the functional pulling directions of the rectus muscles.  (+info)

Cervical electromyographic activity during low-speed rear impact. (5/829)

Whiplash motion of the neck is characterized by having an extension-flexion motion of the neck. It has been previously assumed that muscles do not play a role in the injury. Eight healthy males were seated in a car seat mounted on a sled. The sled was accelerated by a spring mechanism. Muscle electromyographic (EMG) activity was measured by wire electrodes in semi-spinalis capitis, splenius capitis, and levator scapulae. Surface EMG activity was measured over trapezius and sternocleidomastoideus. Wavelet analysis was used to establish the onset of muscle activity with respect to sled movement. Shorter reaction times were found to be as low as 13.2 ms from head acceleration and 65.6 ms from sled acceleration. Thus the muscles could influence the injury pattern. It is of interest that clinical symptoms are often attributed to muscle tendon injuries.  (+info)

Transformations in flagellar structure of Rhodobacter sphaeroides and possible relationship to changes in swimming speed. (6/829)

Rhodobacter sphaeroides is a photosynthetic bacterium which swims by rotating a single flagellum in one direction, periodically stopping, and reorienting during these stops. Free-swimming R. sphaeroides was examined by both differential interference contrast (DIC) microscopy, which allows the flagella of swimming cells to be seen in vivo, and tracking microscopy, which tracks swimming patterns in three dimensions. DIC microscopy showed that when rotation stopped, the helical flagellum relaxed into a high-amplitude, short-wavelength coiled form, confirming previous observations. However, DIC microscopy also revealed that the coiled filament could rotate slowly, reorienting the cell before a transition back to the functional helix. The time taken to reform a functional helix depended on the rate of rotation of the helix and the length of the filament. In addition to these coiled and helical forms, a third conformation was observed: a rapidly rotating, apparently straight form. This form took shape from the cell body out and was seen to form directly from flagella that were initially in either the coiled or the helical conformation. This form was always significantly longer than the coiled or helical form from which it was derived. The resolution of DIC microscopy made it impossible to identify whether this form was genuinely in a straight conformation or was a low-amplitude, long-wavelength helix. Examination of the three-dimensional swimming pattern showed that R. sphaeroides changed speed while swimming, sometimes doubling the swimming speed between stops. The rate of acceleration out of stops was also variable. The transformations in waveform are assumed to be torsionally driven and may be related to the changes in speed measured in free-swimming cells. The roles of and mechanisms that may be involved in the transformations of filament conformations and changes in swimming speed are discussed.  (+info)

Horizontal vestibuloocular reflex evoked by high-acceleration rotations in the squirrel monkey. I. Normal responses. (7/829)

The horizontal angular vestibuloocular reflex (VOR) evoked by high-frequency, high-acceleration rotations was studied in five squirrel monkeys with intact vestibular function. The VOR evoked by steps of acceleration in darkness (3,000 degrees /s(2) reaching a velocity of 150 degrees /s) began after a latency of 7.3 +/- 1.5 ms (mean +/- SD). Gain of the reflex during the acceleration was 14.2 +/- 5.2% greater than that measured once the plateau head velocity had been reached. A polynomial regression was used to analyze the trajectory of the responses to steps of acceleration. A better representation of the data was obtained from a polynomial that included a cubic term in contrast to an exclusively linear fit. For sinusoidal rotations of 0.5-15 Hz with a peak velocity of 20 degrees /s, the VOR gain measured 0.83 +/- 0.06 and did not vary across frequencies or animals. The phase of these responses was close to compensatory except at 15 Hz where a lag of 5.0 +/- 0.9 degrees was noted. The VOR gain did not vary with head velocity at 0.5 Hz but increased with velocity for rotations at frequencies of >/=4 Hz (0. 85 +/- 0.04 at 4 Hz, 20 degrees /s; 1.01 +/- 0.05 at 100 degrees /s, P < 0.0001). No responses to these rotations were noted in two animals that had undergone bilateral labyrinthectomy indicating that inertia of the eye had a negligible effect for these stimuli. We developed a mathematical model of VOR dynamics to account for these findings. The inputs to the reflex come from linear and nonlinear pathways. The linear pathway is responsible for the constant gain across frequencies at peak head velocity of 20 degrees /s and also for the phase lag at higher frequencies being less than that expected based on the reflex delay. The frequency- and velocity-dependent nonlinearity in VOR gain is accounted for by the dynamics of the nonlinear pathway. A transfer function that increases the gain of this pathway with frequency and a term related to the third power of head velocity are used to represent the dynamics of this pathway. This model accounts for the experimental findings and provides a method for interpreting responses to these stimuli after vestibular lesions.  (+info)

Horizontal vestibuloocular reflex evoked by high-acceleration rotations in the squirrel monkey. II. Responses after canal plugging. (8/829)

The horizontal angular vestibuloocular reflex (VOR) evoked by high-frequency, high-acceleration rotations was studied in four squirrel monkeys after unilateral plugging of the three semicircular canals. During the period (1-4 days) that animals were kept in darkness after plugging, the gain during steps of acceleration (3, 000 degrees /s(2), peak velocity = 150 degrees /s) was 0.61 +/- 0.14 (mean +/- SD) for contralesional rotations and 0.33 +/- 0.03 for ipsilesional rotations. Within 18-24 h after animals were returned to light, the VOR gain for contralesional rotations increased to 0. 88 +/- 0.05, whereas there was only a slight increase in the gain for ipsilesional rotations to 0.37 +/- 0.07. A symmetrical increase in the gain measured at the plateau of head velocity was noted after animals were returned to light. The latency of the VOR was 8.2 +/- 0. 4 ms for ipsilesional and 7.1 +/- 0.3 ms for contralesional rotations. The VOR evoked by sinusoidal rotations of 0.5-15 Hz, +/-20 degrees /s had no significant half-cycle asymmetries. The recovery of gain for these responses after plugging was greater at lower than at higher frequencies. Responses to rotations at higher velocities for frequencies >/=4 Hz showed an increase in contralesional half-cycle gain, whereas ipsilesional half-cycle gain was unchanged. A residual response that appeared to be canal and not otolith mediated was noted after plugging of all six semicircular canals. This response increased with frequency to reach a gain of 0.23 +/- 0.03 at 15 Hz, resembling that predicted based on a reduction of the dominant time constant of the canal to 32 ms after plugging. A model incorporating linear and nonlinear pathways was used to simulate the data. The coefficients of this model were determined from data in animals with intact vestibular function. Selective increases in the gain for the linear and nonlinear pathways predicted the changes in recovery observed after canal plugging. An increase in gain of the linear pathway accounted for the recovery in VOR gain for both responses at the velocity plateau of the steps of acceleration and for the sinusoidal rotations at lower peak velocities. The increase in gain for contralesional responses to steps of acceleration and sinusoidal rotations at higher frequencies and velocities was due to an increase in the gain of the nonlinear pathway. This pathway was driven into inhibitory cutoff at low velocities and therefore made no contribution for rotations toward the ipsilesional side.  (+info)

Strong relationships were identified between cadence and peak vertical acceleration (r = .96, P , .05) and peak loading rate (r = .98, P , .05). Regression analyses indicated cadences of 157 ± 12 steps/min (2.6 ± 0.2 steps/s) and 122 ± 10 steps/min (2.0 ± 0.2 steps/s) corresponded with the 4.9 g peak vertical acceleration and 43 BW/s peak loading rate thresholds, respectively. ...
Abstract: We study the effects of acceleration on fermionic Gaussian states of localized modes of a Dirac field. We consider two wave-packets in a Gaussian state and transform these to an accelerated frame of reference. In particular, we formulate the action of this transformation as a fermionic quantum channel. Having developed the general framework for fermions, we then investigate the entanglement of the vacuum, as well as the entanglement in Bell states. We find that with increasing acceleration vacuum entanglement increases, while the entanglement of Bell states decreases. Notably, our results have an immediate operational meaning given the localization of the modes ...
Tri-axial accelerometers are high-level output transducers requiring no additional amplification since the amplifier is built into the transducer. They
Reference: Avenirova E.D., Savin B.M., Sytinskii Ia., Effect of oxygen starvation and acceleration on the glutaminic and gamma-aminobutyric acid content in the brain tissue, Voprosy meditsinskoi khimii, 1964, vol: 10(6), 595-600 ...
Background: Aspects of physical functioning, including balance and gait, are affected after surgery for lower limb musculoskeletal tumors. These are not routinely measured but likely are related to how well patients function after resection or amputation for a bone or soft tissue sarcoma. Small, inexpensive portable accelerometers are available that might be clinically useful to assess balance and gait in these patients, but they have not been well studied.. Questions/purposes: In patients treated for lower extremity musculoskeletal tumors, we asked: (1) Are accelerometer-based body-worn monitor assessments of balance, gait, and timed up and go tests (TUG) feasible and acceptable? (2) Do these accelerometer-based body-worn monitor assessments produce clinically useful data (face validity), distinguish between patients and controls (discriminant validity), reflect findings obtained using existing clinical measures (convergent validity) and standard manual techniques in clinic (concurrent ...
Contact Instrumented Sensor Technology for acceleration data loggers, recorders and monitors for a variety of monitoring applications.
Dive into the research topics of Mobile sensor agent to acquire acceleration data for structural health monitoring. Together they form a unique fingerprint. ...
1] The first in situ sounding of a post-seismic infrasound wavefront is presented, using data from the GOCE mission. The atmospheric infrasounds following the great Tohoku earthquake (on 11 March 2011) induce variations of air density and vertical acceleration of the GOCE platform. These signals are detected at two positions along the GOCE orbit corresponding to a crossing and a doubling of the infrasonic wavefront created by seismic surface waves. Perturbations up to 11% of air density and 1.35 × 10 − 7 m/s2 of vertical acceleration are observed and modeled with two different solid-atmosphere coupling codes. These perturbations are a due to acoustic waves creating vertical velocities up to 130 m/s. Amplitudes and arrival times of these perturbations are reproduced respectively within a factor 2, and within a 60 s time window. Waveforms present a good agreement with observed data. The vertical acceleration to air density perturbation ratio is higher for these acoustic waves than for gravity ...
Abstract. Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat. During the first major ground-based study between 2006 and 2008, GPS receivers were used to monitor ice flow from 55 km to 171 km inland, along the central flowline. At four sites both acceleration and thinning rates over the last two years exceeded rates observed at any other time over the last two decades. At the downstream site acceleration was 6.4% over 2007 and thinning was 3.5±0.5 ma−1. Acceleration and thinning have spread rapidly inland with the acceleration 171 km inland at 4.1% over 2007, greater than any measured annual flow increase along the whole glacier prior to 2006. Increases in surface slope, and hence gravitational driving stress, correlate well with the acceleration and no sustained change in longitudinal stress gradient is needed to explain the force balance. There is no indication that the ...
MR Safe accelerometer for tri-axial measurements and subject feedback. This high level output transducer (±5 G) is optimal for measuring accelerations when performing slow movements, subtle gestures, or tapping responses and can be used as a feedback transducer for subjects in the MRI. The transducer provides three outputs, simultaneously measuring acceleration along the X-, Y- and Z-axes
A simply formed speed change transmission device capable of continuously changing an engine drive force in each of speed ranges classified in multiple stages by utilizing a continuously variable transmission (10) and planetary transmission mechanisms (P1, P2, P3), and clutches (C1, C2). The speed change transmission device includes a main transmission device (B) for synthesizing an output from the continuously variable transmission (10) with a drive force from an engine (1) by the first, second, and third planetary transmission mechanisms (P1, P2, P3), and outputting the synthesized drive force from an output shaft (41) through a clutch part (C) having the first and second clutches (C1, C2). The speed change transmission device further includes an auxiliary transmission device (20) for changing and outputting the drive force of the main transmission device (B) from the output shaft (41).
A high acceleration cockpit design test/evaluation program was conducted, using a full scale design aid. Alternate configurations were compared using this full scale design aid in a formally structured evaluation including mission related task elements. Test criteria considered evaluation of control/display and cockpit design options, including seat location, motion, and pilot anthropometry, with a balance between the physical and operational test measures and objectives using Air Force provided pilot subjects. (Author)*Jet fighters
Last week benchmarks were published of Intel`s New Sandy Bridge Acceleration architecture (SNA) that showed several performance improvements for 2D and 3D, but the new acceleration architecture still wasn`t mature with a few regressions compared to the normal UXA back-end. While the focus of this SNA support is on speeding up operations for Sandy Bridge (SNB) and forthcoming Ivy Bridge (IVB) hardware, SNA is supported for older Intel graphics processors too. Here are some benchmarks of the Sandy Bridge New Acceleration architecture when using the Ironlake and Gen3 back-ends. Business software left the office and moved into the home long ago. If youve ever lost the password to Word, ZIP or PDF file in misguided attempt to protect data from prying eyes, this guide to Decrypting Document and File Passwords is a life saver. PCSTATS Tips ...
You can run a series of commands on your Terminal to disable the mouse acceleration feature in Mac OS X. In this regard, here are the steps you need to follow: Step 1: Open the Terminal on your Mac computer-from the Utility folder in Applications. Alternatively, you could just press the Command + Spacebar keys combination on your keyboard to open the Spotlight Search bar.. Now type Terminal into this search bar then press the Enter key to run the search. Select Terminal-the first entry on the search results-to launch the utility tool.. Step 2: Check the current mouse acceleration setting on your computer by running the following command (Just type the command into the Terminal and then press the Enter key on the keyboard to run it):. defaults read .GlobalPreferences com.apple.mouse.scaling. This will display a hidden preference setting that you can change by altering the number at the end. If the mouse acceleration feature is enabled, the above command should display a value between 0 and 3. ...
Accumulated signal noise will cause the integrated values to drift from the true value when measuring orientation angles of wearable sensors. This work proposes a novel method to reduce the effect of this drift to accurately measure human gait using wearable sensors. Firstly, an infinite impulse response (IIR) digital 4th order Butterworth filter was implemented to remove the noise from the raw gyro sensor data. Secondly, the mode value of the static state gyro sensor data was subtracted from the measured data to remove offset values. Thirdly, a robust double derivative and integration method was introduced to remove any remaining drift error from the data. Lastly, sensor attachment errors were minimized by establishing the gravitational acceleration vector from the acceleration data at standing upright and sitting posture. These improvements proposed allowed for removing the drift effect, and showed an average of 2.1°, 33.3°, 15.6° difference for the hip knee and ankle joint flexion/extension angle,
Contents of the 15 Chapter for This High Performance Inertial Sensors Market Study:-. Chapter 1: to describe Global High Performance Inertial Sensors Market Introduction, product scope, market overview, market opportunities, market risk, market driving force;. Chapter 2: to analyze the top manufacturers of Global High Performance Inertial Sensors Market, with sales, revenue, and price of Global High Performance Inertial Sensors Market, in 2016 and 2017;. Chapter 3: to display the competitive situation among the top manufacturers, with sales, revenue and market share in 2016 and 2017;. Chapter 4: to show the Global High Performance Inertial Sensors market by regions, with sales, revenue and market share of Global High Performance Inertial Sensors Market, for each region, from 2012 to 2017;. Chapter 5, 6, 7, 8 and 9: to analyze the key regions, with sales, revenue and market share by key countries in these regions;. Chapter 10 and 11: to show the market by type and application, with sales market ...
Thinking Science, the Cognitive Acceleration through Science Education (CASE) curriculum, is a program designed for 11-14 year olds (in the first two years of secondary school) which encourages them to reflect on their own thinking and to develop their reasoning power in tackling novel problems. This study presents results that represent the first large-scale long-term test of the process of raising standards in schools by concentrating on a thinking skill approach. Overall, about 4,500 pupils in the CASE schools have been featured in the data in this report. Seventeen schools data have been compared with added-value data from a greater number of control schools. Results indicate that the CASE methodology, even when tried for the first time, produced an average increase on the order of half as much gain in the percentage of pupils obtaining C-grade and above at the GCSE examination (an increase from a National average of 44% to 63% for science in 1996, and an increase from 43% to 57% in ...
Can anyone run Mpv with hardware acceleration? mpv --hwdec=vdpau [FILE] I m facing the following error need to call Mpv from terminal : libva info: Trying to open usr lib64 dri nvidia_drv_ libva error: usr lib64 dri nvidia_drv_ has no function __vaDr..
SANTA CLARA, Calif., February 6, 2013 - Silver Peak Systems , a leader in accelerating data over distance, today announced its first multi-gigabit-per-second (Gbps) data acceleration solution for Windows Server Hyper-V environments. Silver Peaks virtual offering for Windows Server Hyper-V now extends from small remote offices to large data centers, giving Microsoft Corp.s
‎B2B Revenue Acceleration: The Podcast for Technology Leaders is a podcast dedicated to helping software executives stay on the cutting edge of sales and marketing in their industry. Whether youre looking to follow emerging trends in B2B technology, learn from venture capital experts about their lat…
Figure Electromechanical Market Size and CAGR 2013-2018 (Million USD) Figure Electromechanical Market Size and CAGR 2013-2018 (Volume) Figure Electromechanical Market Forecast and CAGR 2019-2025 (Million USD) Figure Electromechanical Market Forecast and CAGR 2019-2025 (Volume) Figure Digital Market Size and CAGR 2013-2018 (Million USD) Figure Digital Market Size and CAGR 2013-2018 (Volume) Figure Digital Market Forecast and CAGR 2019-2025 (Million USD) Figure Digital Market Forecast and CAGR 2019-2025 (Volume) Figure Other Digital Meters Market Size and CAGR 2013-2018 (Million USD) Figure Other Digital Meters Market Size and CAGR 2013-2018 (Volume) Figure Other Digital Meters Market Forecast and CAGR 2019-2025 (Million USD) Figure Other Digital Meters Market Forecast and CAGR 2019-2025 (Volume) Figure Power Industry Market Size and CAGR 2013-2018 (Million USD) Figure Power Industry Market Size and CAGR 2013-2018 (Volume) Figure Power Industry Market Forecast and CAGR 2019-2025 (Million USD) ...
Figure Emulsifiers Market Size and CAGR 2013-2018 (Million USD) Figure Emulsifiers Market Size and CAGR 2013-2018 (Volume) Figure Emulsifiers Market Forecast and CAGR 2019-2025 (Million USD) Figure Emulsifiers Market Forecast and CAGR 2019-2025 (Volume) Figure Enzymes Market Size and CAGR 2013-2018 (Million USD) Figure Enzymes Market Size and CAGR 2013-2018 (Volume) Figure Enzymes Market Forecast and CAGR 2019-2025 (Million USD) Figure Enzymes Market Forecast and CAGR 2019-2025 (Volume) Figure Oxidizing Agents Market Size and CAGR 2013-2018 (Million USD) Figure Oxidizing Agents Market Size and CAGR 2013-2018 (Volume) Figure Oxidizing Agents Market Forecast and CAGR 2019-2025 (Million USD) Figure Oxidizing Agents Market Forecast and CAGR 2019-2025 (Volume) Figure Reducing Agents Market Size and CAGR 2013-2018 (Million USD) Figure Reducing Agents Market Size and CAGR 2013-2018 (Volume) Figure Reducing Agents Market Forecast and CAGR 2019-2025 (Million USD) Figure Reducing Agents Market Forecast ...
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GROMACS is a popular choice for scientists simulating molecular interactions. With NVIDIA Tesla K40 GPUs, its common to see 2X and 3X speedups compared to the latest multi-core CPUs.
You would not make a constant-acceleration assumption in this case. You would typically do that if you had no means of measuring the systems acceleration, but you say that it is observable for your case. The most obvious way to model this system would be using the state vector. $$ \mathbf{x_k} = \left [ \begin{array}{c}x_k \\ \dot{x}_k \\ \ddot{x}_k \end{array} \right ] = \left [ \begin{array}{c}x_k \\ v_k \\ a_k \end{array} \right ] $$. where $x_k$ is the position, $v_k$ is the velocity, and $a_k$ is the acceleration of the system at time instant $k$. Since you say that you can measure the position and acceleration of the system, the measurement vector $\mathbf{z_k}$ would be:. $$ \mathbf{z_k} = \mathbf{Hx_k} + \mathbf{v_k} $$. with. $$ \mathbf{H} = \left[ \begin{array}{cc} 1 && 0 && 0 \\ 0 && 0 && 1 \end{array} \right] $$. resulting in the measurement model:. $$ \mathbf{z_k} = \left[ \begin{array}{c} x_k \\ a_k \end{array} \right] + \mathbf{v_k} $$. where $\mathbf{v_k}$ is the (Gaussian) ...
In the present paper, the magnetohydrodynamics effects on flow parameters of blood carrying magnetic nanoparticles flowing through a stenosed artery under the influence of periodic body acceleration are investigated. Blood is assumed to behave as a Casson fluid. The governing equations are nonlinear and solved numerically using finite difference schemes. The effects of stenotic height, yield stress, magnetic field, particle concentration and mass parameters on wall shear stress, flow resistance and velocity distribution are analysed. It is found that wall shear stress and flow resistance values are considerably enhanced when an external magnetic field is applied. The velocity values of fluid and particles are appreciably reduced when a magnetic field is applied on the model. It is significant to note that the presence of nanoparticles, magnetic field and yield stress tend to increase the plug core radius. Increased wall shear stress and flow resistance affects the circulation of blood in the human
For evaluating physical function or physical activity, wearable sensors must capture kinematic or dynamic dimensions such as translational and rotational accelerations, velocities and displacements or forces and moments. Sensor measurement is captured either directly or indirectly and then further processed using additional information (e.g. boundary conditions) including those of human kinetics computer models.. The most commonly-used wearable sensors are inertial measurement units (IMUs). They contain individual or combined one-, two- or three-dimensional accelerometers and gyroscopes and have become accessible regarding measurement accuracy, size, cost, energy consumption or onboard pre-processing power through mass production, for example for automotive stability programmes and smartphones. Also magnetometers, GPS and barometer sensors are available, mostly in sensor fusion with an IMU. Wearable sensors that measure forces are yet less common and in orthopaedic publications seem restricted ...
Think about the momentum in the two situations. In any closed system, momentum must be conserved. When you accelerate a car, you push the Earth in the opposite direction with exactly the same momentum. When you want to slow down (which again is acceleration, just in direction opposite to motion), you again push the Earth, and it will be accelerated in the opposite direction. Since the Earth is much more massive than the car, the acceleration on the Earth is tiny, which makes Earth easy to push from (compare jumping on concrete with jumping on a bit of foam - the concrete is almost unyielding, which gives you a lot of leverage).. The braking and acceleration are symmetric in this case - when accelerating, you make the car move faster relative to the ground, when braking, you make it slower relative to the ground. Slowing a fast thing down on a slow thing allows you to extract useful work, pretty much the same way you can extract work from, say, an interface between a high temperature and low ...
Obesity treatment and prevention in youth is challenging. Thus, we are developing the KNOWME Network, a suite of wearable, Bluetooth-enabled wireless devices for monitoring obesity-related behaviors in minority youth. Here we present the Bluetooth-enabled Accelerometer (BEA), developed to address a lack of Bluetooth-enabled, research-quality accelerometers. The BEA provides information about body movement and orientation using an accelerometer and gyroscope combination that interfaces directly with a mobile phone/computer in real time. The accuracy of BEA-based models was assessed by estimating walking speed. Purpose: To develop personalized models for estimating treadmill walking speed using the BEA. Methods: Five subjects (4 male, 1 female; age 35 ± 12) walked at 7 speeds ranging from 2.5 to 4.0 miles per hour (mph) for 5 minutes per speed while wearing the BEA on the right hip. The BEA recorded motion information with a tri-axial accelerometer and tri-axial gyroscope and transmitted it via ...
The weight of the object at the south pole is greater than its weight at the equator because the Earths gravitational acceleration at the south pole is greater than the Earths gravitational acceleration at ...
ActiGraph is dedicated to providing our clients with highly accurate, innovative, and cost effective objective monitoring solutions to help them achieve their research and clinical data collection, analysis, and management objectives. Through close collaborative relationships with our clients, we strive to proactively identify emerging trends and understand the changing landscape of our industry, allowing us to deliver cutting edge hardware, software, and data management solutions to meet the evolving needs of the scientific community.
Velocity is the rate of motion in a specified direction and acceleration is a change in an objects velocity. Both velocity and acceleration are vector quantities in that they are based on a magnitude AND a specified direction (i.e., the car is traveling north at 55 mph). Speed, on the other hand, is an objects rate of motion. Speed is a scalar quantity and is based only on a magnitude (i.e., the car is traveling at 55 mph). Whenever there is a force, there is acceleration according to Newtons second law of motion (F = ma). A force is required to change an objects speed, and a force is required to change an objects direction. Since velocity is a quantity of speed and direction, a change in an objects speed OR a change in its direction, or both cause the object to accelerate. The force can change the speed of the object without affecting its direction (linear acceleration), or the force can change the direction of the object with or without affecting its speed (centripetal ...
So lets see... If this thing lands at the same vertical height it was launched at then (Vsin theta)^2/(2*y_max)=g and the horizontal distance is Vi^2*sin(2*theta)/g and V*cos(theta)=distance in x/time. 3 equations, 3 unknowns ...
We are already familiar with the concepts of linear velocity and linear acceleration, so angular velocity and angular acceleration are not too difficult to understand. Angular velocity is, quite sim
Research was conducted involving a series of impacts on the AFRL Horizontal Impulse Accelerator HIA, as part of a research collaboration agreement between NASA and AFRL. The purpose of the effort was to evaluate and conduct a comparison of the biodynamic response of different sized ATD head and neck configurations to support the development of computational models used to evaluate crew injury risk and aid in the design of seat and restraint systems for NASAs space vehicles and USAF air vehicles. Testing was completed using a head and neck combination from a 5th Hybrid III female aerospace ATD, a 50th Hybrid III male aerospace ATD, and a 95th Hybrid III male aerospace ATD. A test matrix was developed to assess each ATD as a function of both impact orientation, magnitude of the impact acceleration input pulse 8 to 16 G dependent on impact orientation, and rise-time or time-to-peak of the impact acceleration input pulse 50 or 100 ms. Secondary independent test variables included tests with or with-out a
Disables mouse acceleration on a computer. As written, the script disables acceleration; however, if you want to enable acceleration, just change the strValue variable to = 1.
Strategy Since we know how the potential energy changes as a function of x, we can substitute for U (x) U (x) in Equation 8. You must also increase the video memory slider to at least 128 MB. Using several examples, The Physics Classroom shows how to calculate the acceleration using a free-body diagram and Newtons second law of motion. Speed and distance-time graphs Speed is measured in metres per second (m/s) or kilometres per hour (km/h). How do you find angular acceleration? Find the initial and final angular velocity in radians/s. Find the speed and position as functions of time while. Read the velocity and time at the initial and final times you used in the previous step. To find the velocity function based on displacement, use the first derivative of f(x) = 2 1. Calculate the acceleration of the bicycle in both the cases. 1% ± 1% 4 5 4-100-- AVERAGE To collect data: On the labquest, click collect, toss the ball above the motion sensor and catch it. In physics, gravitational acceleration ...
At present, the problem of population aging has become a hot spot of international concern, especially in China, and the international community urgently needs a universally applicable health care system for the elderly. Recent research shows that falling is the biggest threat to the health of the elderly. Based on thihe physiological and behavioral characteristics of the elderly, the paper discusses an algorithm for the recognition of motion state and fall detection of elderly applied to wearable devices to ensure timely rescue after a fall. The algorithm continuously acquires acceleration information during the movement of the elderly through a six-axis acceleration sensor. Firstly, the acceleration data is filtered, then the combined acceleration is calculated, and multiple features of the continuous data are extracted, and then the softmax method is used to classify the different motion states to realize the alarm of the fall. The algorithm extracts the feature vector by the magnitude of the ...
The chain of a workshop crane is 50 m long and has a mass of 3 kg/m. It is partially wound on a drum and the effective radius from the axis of the drum to the chain centre line is 0.2 m. The drum itself, including shaft and gear wheel has a mass of 100 kg and has a radius of gyration of 0.15 m. A steel block with a mass of 500 kg is to be lifted from a point 20 m below the level of the axis of the drum. If a torque of 1.3 kNm is applied to the drum, what will be the initial vertical acceleration of the steel block ...
The speed or a velocity of an object is rarely constant. For example, it is extremely unlikely that you drive at a perfectly constant speed when you travel in your car. You have to pull out of your driveway and speed up to the speed limit. You will then have to stop at red lights and then start driving again when the light turns green. You constantly change your speed when you drive.. Acceleration is changing velocity. Velocity has two components:Speed and direction. If we change the speed of an object than the acceleration of that object will change. If we change the direction of an object than the acceleration of that object will change. If we change both speed and direction of an object than the acceleration of that object will change.. To properly measure the acceleration of an object we must also account for how quickly the object changes its velocity. If the object changes velocity quickly we can say it had a very great acceleration. So acceleration can be better described as how velocity ...
The developed method for detecting physical activity types showed a high sensitivity and specificity for sitting, standing, walking, running, walking stairs, and cycling in a standardized setting and for sitting posture during free living.
We investigated the individual muscle contribution to arm motion to better understand the complex muscular coordination underlying three-dimensional (3D) reaching tasks of the upper limb (UL). The individual contributions of biceps, triceps, deltoid anterior, medius, posterior and pectoralis major to the control of specific degrees of freedom (DOFs) were examined: using a scaled musculoskeletal model, the muscle excitations that reproduce the kinematics were calculated using computed muscle control and a forward simulation was generated. During consequent perturbation analyses, the muscle excitation of selected muscles was instantaneously increased and the resulting effect on the specific DOF was studied to quantify the muscle contribution. The calculated muscle contributions were compared to the responses elicited during electrical stimulation experiments. Innovative in our findings is that muscle action during reaching clearly depended on the reaching trajectory in 3D space. For the majority of the
You use data model acceleration to accelerate all of the fields defined in a data model. When a data model is accelerated, any pivot or report generated by that data model should complete much quicker than it would without the acceleration, even if the data model represents a significantly large dataset. There are two types of data model acceleration, ad hoc and persistent. Ad hoc acceleration applies to a single dataset, is run over all time, and exists for the duration of a users pivot session, while persistent acceleration is turned on by an admin, happens in the background, and can be scoped to shorter time ranges such as a week or a month. Persistent acceleration is used any time a search is run against a dataset in an acceleration-enabled data model. Data model acceleration makes use of Splunks high performance analytics store (HPAS) technology, which, in a manner similar to that of report acceleration, builds summaries alongside the buckets in your indexes. Also like report ...
In conclusion, none of the metrics as evaluated systematically outperformed all other metrics across a wide range of standardised kinematic conditions. However, choice of metric explains different degrees of variance in daily human physical activity.
Measures taken from the chest and left leg indicate low risk of injuries to these body regions in a crash of this severity. Forces on the head when the dummy moved forward into the airbag indicate that injuries to the head would be possible. A high head acceleration occurred when the dummys head hit the window sill/B-pillar, indicating that further injuries to the head would be possible. Forces on the right tibia and acceleration on the right foot indicate that injuries to the lower leg and foot would be possible.. ...
Measures taken from the chest and left leg indicate low risk of injuries to these body regions in a crash of this severity. Forces on the head when the dummy moved forward into the airbag indicate that injuries to the head would be possible. A high head acceleration occurred when the dummys head hit the window sill/B-pillar, indicating that further injuries to the head would be possible. Forces on the right tibia and acceleration on the right foot indicate that injuries to the lower leg and foot would be possible.. ...
s, turning it on globally should not cause any adverse drawing effects. However, because hardware acceleration is not supported for all of the 2D drawing operations, turning it on might affect some of your custom views or drawing calls. Problems usually manifest themselves as invisible elements, exceptions, or wrongly rendered pixels. To remedy this, Android gives you the option to enable or disable hardware acceleration at multiple levels. See Control hardware acceleration.. If your application performs custom drawing, test your application on actual hardware devices with hardware acceleration turned on to find any problems. The Unsupported drawing operations section describes known issues with hardware acceleration and how to work around them.. Also see OpenGL with the Framework APIs and Renderscript. ...
s, turning it on globally should not cause any adverse drawing effects. However, because hardware acceleration is not supported for all of the 2D drawing operations, turning it on might affect some of your custom views or drawing calls. Problems usually manifest themselves as invisible elements, exceptions, or wrongly rendered pixels. To remedy this, Android gives you the option to enable or disable hardware acceleration at multiple levels. See Control hardware acceleration.. If your application performs custom drawing, test your application on actual hardware devices with hardware acceleration turned on to find any problems. The Unsupported drawing operations section describes known issues with hardware acceleration and how to work around them.. Also see OpenGL with the Framework APIs and Renderscript. ...
With hardware 3D acceleration, three-dimensional rendering uses the graphics processor on your video card instead of taking up valuable CPU resources drawing 3D images. Its also referred to as hardware acceleration instead of software acceleration because without this 3D acceleration your CPU is forced to draw everything itself using the Mesa software rendering libraries, which takes up quite a bit of processing power. While Xorg typically supports 2D hardware acceleration, it often lacks hardware 3D acceleration. Three-dimensional hardware acceleration is valuable in situations requiring rendering of 3D objects such as games, 3D CAD and modeling. ...
From acceleration to geometry[edit]. In exploring the equivalence of gravity and acceleration as well as the role of tidal ... Gravity and acceleration[edit]. Ball falling to the floor in an accelerating rocket (left) and on Earth (right). The effect is ... When the lower observer sends a light signal to the higher observer, the acceleration causes the light to be red-shifted, as ... this relative acceleration is minuscule, while for skydivers on opposite sides of the Earth, the effect is large. Such ...
From this, the angular acceleration is defined as α. →. (. t. ). =. d. d. t. Ω. →. (. t. ). =. Ω. →. ˙. (. t. ). {\displaystyle ... Force, acceleration, and jerk[edit]. For a constant mass m. {\displaystyle m}. , acceleration a. {\displaystyle a}. is directly ... Acceleration build up - positive jerk limit; linear increase in acceleration to the positive acceleration limit; quadratic ... Angular acceleration, α. (. t. ). =. ω. ˙. (. t. ). =. d. ω. (. t. ). d. t. ,. {\displaystyle \alpha (t)={\dot {\omega }}(t)={\ ...
"Constant Acceleration". Retrieved 24 May 2011.. *^ U.S. Air Force Research Report no. AU ARI 93-8: LEO On The Cheap. Retrieved ... Electromagnetic acceleration[edit]. Electrical launch systems include mass drivers, railguns, and coilguns. All of these ... Forms of ground launch limited to a given maximum acceleration (such as due to human g-force tolerances if intended to carry ... For both Gen 1-2 systems, the mouth of the tube would be open during vehicle acceleration, with air kept out by ...
Impact of rocket acceleration[edit]. Another important aspect to GCRs is the impact of the rocket acceleration on the ... A rocket acceleration of only 0.001 g (10 mm/s²) will cause buoyancy effects to decrease core containment by 35% if all other ... Unless an outside force is relied upon (i.e. magnetic forces, rocket acceleration), the only way to limit fuel-propellant ...
8 Other possible causes of unintended acceleration *8.1 Electronic throttle control system *8.1.1 ABC News acceleration ... By 1986, more than 2,000 injuries had been blamed on sudden acceleration with sudden acceleration complaints totaling over 10 ... The resulting unexpected sudden acceleration would lead to panic, with the driver thinking that the acceleration system had ... Car and Driver, Motor Trend, and Ward's Auto also compared the 2009-10 Toyota recalls to the Audi sudden acceleration cases of ...
Abalkin, Leonid Ivanovich (1986). Kursom uskoreniya [The strategy of acceleration]. Moscow: Politizdat. Cohen, Stephen F.; ... "acceleration"). Gorbachev and his team of economic advisors then introduced more fundamental reforms, which became known as ...
AD263072) Maccabee, B. (1997). Acceleration.[1] Archived December 11, 2006, at the Wayback Machine Industry Observer. // ...
This is a demonstration of cartoon physics, since such acceleration would be impossible in real life. The sequence where Bugs ... "Acceleration". Science in Popular Culture: A Reference Guide. Greenwood Publishing Group. ISBN 978-0313318221. Beck, Jerry; ...
Acceleration is defined as the rate of change of velocity with respect to time. Acceleration is the second derivative of ... In case of constant acceleration, the four physical quantities acceleration, velocity, time and displacement can be related by ... is the tangential acceleration, which is the component of the acceleration that is parallel to the motion. In contrast, the ... The SI unit of acceleration is m s − 2 {\displaystyle ms^{-2}} or metre per second squared. If a a v {\displaystyle \mathbf {a ...
Acceleration. The load is accelerating but there still is a relatively large difference between impeller and turbine speed. ... During the stall and acceleration phases, in which torque multiplication occurs, the stator remains stationary due to the ... unlocking when the throttle was floored for quick acceleration or as the vehicle slowed. This feature was also present in some ... generally increasing efficiency during the acceleration phase and low efficiency in the coupling phase. The loss of efficiency ...
... acceleration; shock and transport shock; gunfire vibration; and random vibration. The standard describes environmental ... Method 510.6 Sand and Dust Test Method 511.6 Explosive Atmosphere Test Method 512.6 Immersion Test Method 513.7 Acceleration ...
Acceleration!" In the "Slither" episode we can hear the songs: "Why Do I Worry?" by Lay Low "What the Water Gave me" by ...
The album was released on April 1, 2008 with a symbolic title Ubrzanje! (Acceleration!). The album featured several producers: ...
"Acceleration". December 17, 2019. Retrieved October 4, 2019 - via Amazon. "Ad Astra". December 17, 2019. Retrieved November 8, ... "Acceleration". December 17, 2019. Retrieved October 4, 2019 - via Amazon. "Downton Abbey". December 17, 2019. Retrieved ...
acceleration'). Gorbachev reinvigorated the party ideology, adding new concepts and updating older ones. Positive consequences ...
Van Ripper, A. Bowdoin (2002). "Acceleration". Science in Popular Culture: A Reference Guide. Greenwood Publishing Group. ISBN ...
Age acceleration effects due to HIV-1 infection[edit]. Infection with the Human Immunodeficiency Virus-1 (HIV) is associated ... A significant age acceleration effect could be detected in brain (7.4 years) and blood (5.2 years) tissue due to HIV-1 ...
"Linux Cryptographic Acceleration on an i.MX6" (PDF). Linux Foundation. February 2017. Archived from the original (PDF) on 2019- ... "Hardware Acceleration". www.veracrypt.fr. "aes - The Go Programming Language". golang.org. Retrieved 2020-06-26. Shimpi, Anand ... See Crypto API (Linux).) The following chips, while supporting AES hardware acceleration, do not support AES-NI: AMD Geode LX ... throughput from approximately 28.0 cycles per byte to 3.5 cycles per byte with AES/GCM versus a Pentium 4 with no acceleration ...
"Acceleration Sensing". IoT One. Retrieved 21 March 2017. "IoT Terms Database". IoT One. Retrieved 21 March 2017. "Quick Guide ...
Datacenter Acceleration. Archived from the original on 2013-06-16. Retrieved 2013-09-06. CS1 maint: discouraged parameter (link ...
Innovation Acceleration; Beauty Packaging; Page 14; Dec. 2012 Powder Coating: The Complete Finisher's Handbook; The Powder ...
Peter Rubin, James (2000-06-12). "Business Acceleration". Wall Street Journal. ISSN 0099-9660. Retrieved 2021-03-23. Rubin, ...
The acceleration of the P90D can reach 1.1g, described by Tesla as "faster than falling". Tesla described its July 2015 ... "Acceleration chart". "Model S Specs and Standards". Tesla Motors. Retrieved June 4, 2012. LeVine, Steve (July 21, 2015). "Why ... This results in an AWD car with comparable power and acceleration to the rear wheel drive (RWD) version. Additionally, Tesla ... it might take several minutes before the battery is warm enough to provide full acceleration. "Model S/Options and pricing". ...
In 1980, Chandler and Blair47 showed significant increases in knee extension strength, acceleration, anaerobic capacity, time ... Increased acceleration • Increased alertness and attention to task Frati P, Kyriakou C, Del Rio A, Marinelli E, Vergallo GM, ...
In healthy people at oral therapeutic doses, amphetamine has been shown to increase muscle strength, acceleration, athletic ... In 1980, Chandler and Blair47 showed significant increases in knee extension strength, acceleration, anaerobic capacity, time ... Increased acceleration • Increased alertness and attention to task Westfall DP, Westfall TC (2010). "Miscellaneous ...
"Constant Acceleration". Retrieved 24 May 2011. U.S. Air Force Research Report no. AU ARI 93-8: LEO On The Cheap. Retrieved ... Forms of ground launch limited to a given maximum acceleration (such as due to human g-force tolerances if intended to carry ... For both Gen 1-2 systems, the mouth of the tube would be open during vehicle acceleration, with air kept out by ... space exploration and space colonization with a maximum of 3 g acceleration. One proposed design is a freestanding tower ...
Increased acceleration • Increased alertness and attention to task Acheson KJ, Zahorska-Markiewicz B, Pittet P, Anantharaman K ...
Centripetal acceleration . Centripetal force A force acting against rotational acceleration. Centroid The average point of ... Contents: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also References External links Tangential acceleration . ... Acceleration The rate at which the velocity of a body changes with time, and the direction in which that change is acting. Acid ... Angular acceleration Is the rate of change of angular velocity. In three dimensions, it is a pseudovector. In SI units, it is ...
... for the same acceleration. For rugged objects, much higher accelerations may suffice, allowing a far shorter track, potentially ... Its nominal design acceleration is 5000 m/s2, for a final velocity of 112 m/s. IEEE Transactions on Magnetics, Vol Mag-18, No. ... The maximum acceleration part spaces the coils at constant distances, and synchronizes the coil currents to the bucket. In this ... Each deceleration and acceleration of the mass contributes to the momentum of the spacecraft. The lightweight, fast spacecraft ...
Forms of acceleration Academic and social/emotional effects of acceleration Talent Search STEM acceleration Acceleration with ... This report supplies the evidence that no other educational intervention works as well as acceleration for gifted students. It ... A Nation Empowered is a national, research-based report on utilizing academic acceleration for advanced learners published by ... and includes profiles of students and families who have benefited from academic acceleration. Volume II contains the research ...
TLS acceleration (formerly known as SSL acceleration) is a method of offloading processor-intensive public-key encryption for ... Principle of TLS acceleration operation[edit]. The most computationally expensive part of a TLS session is the TLS handshake, ... Sometimes data centers employ dedicated servers for TLS acceleration in a reverse proxy configuration. ... and all ARM CPUs have acceleration in the later ARMv8 architecture. The accelerator provides the RSA public-key algorithm, ...
Techniques for series acceleration are often applied in numerical analysis, where they are used to improve the speed of ... Series acceleration techniques may also be used, for example, to obtain a variety of identities on special functions. Thus, the ... In mathematics, series acceleration is one of a collection of sequence transformations for improving the rate of convergence of ... Two classical techniques for series acceleration are Eulers transformation of series[1] and Kummers transformation of series. ...
acceleration (countable and uncountable, plural accelerations) *(uncountable) The act of accelerating, or the state of being ... acceleration accelerationen accelerationer accelerationerna Genitive accelerations accelerationens accelerationers ... From French accélération or more likely directly from Latin accelerātiō ("a hastening, acceleration")[1]. Equivalent to ... The boosters produce an acceleration of 20 metres per second per second.. *(Can we date this quote?) Isaac Taylor A period of ...
... It is appropriate that during the centenary of the discovery of cosmic rays by Victor Hess, there should ... In addition there is great interest in understanding astrophysical particle acceleration and propagation as this provides the ... have re-kindled my interest in cluster accretion shocks as sites of UHE cosmic ray acceleration. ... be renewed interest in the acceleration of high energy protons and electrons. This has come from many different sources. New ...
Adobe acquisition acceleration helps you to create and enrich high lifetime value audience segment, and deliver dynamic offers ... Acquisition acceleration is the ability to engage high-value customers at a faster pace and a lower cost, no matter where they ...
Microsoft has made a substantial increase in the speed of the Broad Institute best practices pipeline for genome reassembly (BWA & GATK).
I/O Acceleration Technology, a component of Intel® Virtualization Technology for Connectivity, improves data flow and system ... I/O Acceleration for Consolidated Workloads. Server consolidation requires large numbers of virtual machines (VMs) per physical ... Intel® I/O Acceleration Technology (Intel® I/OAT), a component of Intel® Virtualization Technology for Connectivity, improves ... The features of Intel I/OAT enhance data acceleration across the computing platform. ...
This way, you can still take advantage of hardware acceleration everywhere else. See Control hardware acceleration for more ... Hardware acceleration. Beginning in Android 3.0 (API level 11), the Android 2D rendering pipeline supports hardware ... Hardware acceleration is enabled by default if your Target API level is ,=14, but can also be explicitly enabled. If your ... However, because hardware acceleration is not supported for all of the 2D drawing operations, turning it on might affect some ...
The series Particle Acceleration and Detection isdevoted to monograph texts dealing with all aspects of particle ... Particle Acceleration and Detection. Series Editors: Chao, A., Nakamura, K., Oide, K., Riegler, W., Shiltsev, V., Zimmermann, F ... The series "Particle Acceleration and Detection" is devoted to monograph texts dealing with all aspects of particle ... Get the table of contents of every new volume published in Particle Acceleration and Detection. ...
The acceleration of data transmission is not only much larger but also more significant than the acceleration of transport. ... Technological acceleration. Ephemeralization. Scientific and technological innovation directly lead to a speeding up of all ... The acceleration is even more striking for the distribution of information. In pre-industrial times, people communicated over ... Once they have left the Earths atmosphere, their further acceleration is limited only by the speed of light, the absolute ...
FineGround Networks announces that its patent-pending application acceleration software platform, the Condenser, will support ... FineGround Acceleration Software Supports WebSphere By: Darryl K. Taft , May 07, 2002 ... The Campbell, Calif., company focuses on enterprise Web application acceleration.. "Our approach is a bit different from other ... on Tuesday announced that its patent-pending application acceleration software platform, the Condenser, will support the IBM ...
Check out Business Acceleration Systems events, learn more, or contact this organizer. ... Business Acceleration System is using Eventbrite to organize 1 upcoming events. ...
Portfolio Acceleration. Making savvy investment decisions is no longer enough. Successful financial sponsors must have a clear ...
Hardware Acceleration GPU Virtualization with vSphere Bitfusion Support AI- and ML-based workloads by virtualizing hardware ...
... how your organization can navigate the constraints and catalysts that slow down and speed up digital business acceleration. ... Drive Your Organizations Digital Business Acceleration. On-Demand , 1 hour Discussion Topics:. *Why digital business ... Key benefits to expect from digital business acceleration. The COVID-19 pandemic impacted organizations investments in digital ... Digital business acceleration is increasingly important now. This complimentary webinar looks at how your organization can ...
Discover how acceleration in innovation is transforming businesses. ... Innovation Acceleration and Business Impact. Explore the acceleration of innovation that has occurred during unexpected ... Explore the evidence for innovation acceleration and how it is impacting businesses. ...
Acceleration of chemical reaction fronts. II. Gas-phase-diffusion limited frontal dynamics ... this additional gas-phase transport may lead to an acceleration of the propagating reaction front. ...
About Growth Acceleration Partners. growthaccelerationpartners.com Founded in 2007, Growth Acceleration Partners offers an ... Growth Acceleration Partners. Growth Acceleration Partners offers everything from hybrid team involvement to complete solution ... How Growth Acceleration Partners Ranks Against Our Pillars. The ranking of each company was based on the analysis of 50-plus ...
... incorporates the capability for modeling non-constant vehicle acceleration, where the acceleration rate varies with speed, ... In each case, the full-throttle acceleration of the vehicles modeled in PC-Crash showed good agreement with the acceleration of ... incorporates the capability for modeling non-constant vehicle acceleration, where the acceleration rate varies with speed, ... Vehicle Acceleration Modeling in PC-Crash 2014-01-0464. PC-Crash™, a widely used crash analysis software package, ...
Topics may include preparing a design for acceleration, improving simulation acceleration performance, creating synthesizable ... testbenches, an introduction to transaction-based and UVM acceleration, and design debugging using Palladium XP I/II. This ... transaction-based acceleration, UVM acceleration, and synthesizable testbench acceleration. ... Topics may include preparing a design for acceleration, improving simulation acceleration performance, creating synthesizable ...
Acceleration, in physics, is the rate of change of velocity of an object with respect to time. An objects acceleration is the ... Acceleration, in physics, is the rate of change of velocity of an object with respect to time. An objects acceleration is the ... Acceleration, in physics, is the rate of change of velocity of an object with respect to time. An objects acceleration is the ... Acceleration vector a, not parallel to the radial motion but offset by the angular and Coriolis accelerations, nor tangent to ...
If acceleration is constant, use v = va + act, s = So + vat + ½ act2, v2 = VB + 2ac( s - so) to determine the velocity or ... If acceleration is a function of displacement, integrate a ds = v dv to obtain the velocity as a function of position. • ... The acceleration may be represented as the ma vector on the kinetic diagram.* • Identify the unknowns in the problem. ... When applying the equation of motion, it is important that the acceleration of the particle be measured with respect to a ...
Whats the real problem behind Toyotas unintended acceleration? PM senior automotive editor Mike Allen delves into modern car ... So what to make of the unintended acceleration cases popping up by the dozens? Not the ones explainable by problem sticky ... Whats the real problem behind Toyotas unintended acceleration? Is it simply a sticky pedal, or is the problem more ... Plus, sudden unintended acceleration (SUA) is notoriously difficult to diagnose because, more often then not, the problem cant ...
Recent acceleration of human adaptive evolution. John Hawks, Eric T. Wang, Gregory M. Cochran, Henry C. Harpending, Robert K. ... Recent acceleration of human adaptive evolution. John Hawks, Eric T. Wang, Gregory M. Cochran, Henry C. Harpending, Robert K. ... Recent acceleration of human adaptive evolution. John Hawks, Eric T. Wang, Gregory M. Cochran, Henry C. Harpending, and Robert ... The results above demonstrate the extent of acceleration: the recent rate must be one to two orders of magnitude higher than ...
If youre considering using TCP acceleration, its important to talk with your proposed vendor(s) to make sure you understand ... TCP acceleration and spoofing acknowledgements. * One technique for accelerating traffic using TCP acceleration. * ... The acceleration device then saves a copy so it can be retransmitted if needed between the other acceleration device. The final ... the end-points and the acceleration devices. Of course, this acceleration is much more pronounced for large file transfers than ...
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... use in Mac OS X Snow Leopard is destined to also play a significant role in boosting embedded graphics and video acceleration ... but also enable support for higher quality video acceleration. ... Future iPhones to wield OpenCL acceleration. By Prince McLean ... use in Mac OS X Snow Leopard is destined to also play a significant role in boosting embedded graphics and video acceleration ...
The Technology Readiness Acceleration Center at USD trains graduate students in development and commercialization of novel ... The Technology Readiness Acceleration Center (TRAC) is a new multi-institution technology commercialization center that ...
Nominations are open for the 2nd Annual B2B Growth Acceleration Awards, which celebrate the tenacity, excellence, and ... Thank you to all of the nominees of the B2B Growth Acceleration Awards! Here are your 2017 winners!. Sales Growth Achievement. ... ZoomInfo is excited to announce the 2nd Annual B2B Growth Acceleration Awards, which celebrate the tenacity, excellence, and ...
  • Acquisition Deceleration vs. Acquisition Acceleration. (adobe.com)
  • If the speed of the car decreases, this is an acceleration in the opposite direction from the direction of the vehicle, sometimes called deceleration. (dbpedia.org)
  • Each of these accelerations (linear, non-linear, deceleration) might be felt by passengers until their velocity (speed and direction) matches that of the car. (dbpedia.org)
  • xinput --set-prop 9 'Device Accel Constant Deceleration' 3 & # Then, enable acceleration and make it 3 times faster after moving past 6 pixels. (archlinux.org)
  • If the speed of the vehicle decreases, this is an acceleration in the opposite direction and mathematically a negative, sometimes called deceleration, and passengers experience the reaction to deceleration as an inertial force pushing them forward. (wikipedia.org)
  • Both acceleration and deceleration are treated the same, they are both changes in velocity. (wikipedia.org)
  • Each of these accelerations (tangential, radial, deceleration) is felt by passengers until their relative (differential) velocity are neutralized in reference to the vehicle. (wikipedia.org)
  • Cisco's Country Digital Acceleration Strategy is a long-term partnership with government leaders, industry & academia. (cisco.com)
  • We work closely with senior leaders to help them shape their organization's approach to human capital and deliver high-impact innovation and digital acceleration. (heidrick.com)
  • The series "Particle Acceleration and Detection" is devoted to monograph texts dealing with all aspects of particle acceleration and detection research and advanced teaching. (springer.com)
  • The boosters produce an acceleration of 20 metres per second per second. (wiktionary.org)
  • Acceleration in SI units is measured in metres per second per second (m/s 2 ), or in imperial units in feet per second per second (ft/s 2 ). (wiktionary.org)
  • Plus, sudden unintended acceleration (SUA) is notoriously difficult to diagnose because, more often then not, the problem can't be repeated in front of a mechanic. (popularmechanics.com)
  • The National Highway Traffic Safety Agency says "pedal misapplication" is the most probable cause for the vast majority of sudden acceleration incidents in which no vehicle malfunction is evident. (deseretnews.com)
  • The conclusions of the yearlong study by the U.S. safety agency closely parallels findings by Transport Canada, which last month closed its probe after determining sudden acceleration was due to driver error.However, NHTSA declined to characterize the cause of sudden acceleration as driver error, saying that term could imply "carelessness or willfulness in failing to operate a car properly. (deseretnews.com)
  • NHTSA defined sudden acceleration as occurring when a car allegedly accelerates to full power from standstill after being placed in gear, and that stepping on the brakes does not stop the vehicle. (deseretnews.com)
  • NHTSA also said that poor pedal design could play a role in sudden acceleration but was unwilling to recommend changes because additional studies are needed to determine if those changes would create other undesired effects, like increased braking response time. (deseretnews.com)
  • NHTSA, which has conducted more than 100 investigations of unwanted power surges dating back to the late 1970s covering 20 automakers, said its findings "may be difficult to accept" by drivers who believe they were applying the brake while experiencing sudden acceleration. (deseretnews.com)
  • However it said extensive testing failed to turn up any defects in cruise control systems, electronic idle control systems, brakes, or transmissions which would produce sufficient power to create what it calls sudden acceleration. (deseretnews.com)
  • The agency also noted that not all reports of unwanted acceleration could be called sudden acceleration. (deseretnews.com)
  • Bennett said Audi would probably not sue CBS, which in November 1986 aired a report on its "60 Minutes" television program unfavorably portraying Audi's cars as prone to sudden acceleration. (deseretnews.com)
  • Several other domestic and import carmakers have since adopted the device, which both NHTSA and Transport Canada said have proven their worth as a deterrent to sudden acceleration. (deseretnews.com)
  • LOS ANGELES -- A U.S. judge gave preliminary approval Friday to a $1 billion-plus settlement with Toyota Motor Corp. in cases involving problems of sudden, unintended acceleration by its vehicles, a plaintiffs' attorney said. (dailyherald.com)
  • Software glitches were an early suspect in the rash of reports of sudden, unintended accelerations reported in Toyota vehicles in 2010, some of which caused severe accidents and several fatalities. (infoq.com)
  • The National Highway Traffic Safety Administration said yesterday that it might expand its investigation into "sudden acceleration" mishaps involving Audi 5000S cars with three-speed automatic transmissions. (washingtonpost.com)
  • Sudden acceleration" occurs when a vehicle moves forward at high speed from a standstill in reaction to light or moderate pressure on the accelerator pedal. (washingtonpost.com)
  • The petition says that one out of every 500 Audi 5000S cars sold in the United States since 1978 has been involved in sudden-acceleration accidents, resulting in some serious injuries. (washingtonpost.com)
  • Knights links to a few other utilities that can be used to adjust the mouse acceleration curve. (daringfireball.net)
  • Mouse Acceleration PrefPane is a GUI and startup item to Richard Bentley's MouseFix. (macupdate.com)
  • Mouse Acceleration needs a rating. (macupdate.com)
  • Acceleration Partners specializes in the development and ongoing management of profitable, new customer acquisition programs such as search engine optimization (SEO), affiliate management, website architecture and other performance marketing initiatives. (prnewswire.com)
  • Hello Stuart, On Wednesday, 20 May 2020, Stuart Cuddy wrote and made these points on the subject of "Does your CPU support hardware SHA1 acceleration? (mail-archive.com)
  • 8. Falling objects drop with an average acceleration of 9.8 m/sec/sec/ or 9.8 m/sec to second. (google.com)
  • Write the equation of average acceleration. (chegg.com)
  • Instantaneous acceleration, meanwhile, is the limit of the average acceleration over an infinitesimal interval of time. (wikipedia.org)
  • Use this relationship and Newton's second law to determine an expression for centripetal acceleration. (vernier.com)
  • So is tangential acceleration known as initial acceleration not centripetal acceleration? (physicsforums.com)
  • No, the tangential acceleration is orthogonal to the centripetal acceleration by definition. (physicsforums.com)
  • But what I was going for was that centripetal acceleration depends on the speed of rotation. (physicsforums.com)
  • But as long as the rod is rotating, the center of mass will have some centripetal acceleration. (physicsforums.com)
  • These components are called the tangential acceleration and the normal or radial acceleration (or centripetal acceleration in circular motion, see also circular motion and centripetal force). (wikipedia.org)
  • Here is a sample of what participants have to say about the value of the Management Acceleration Programme . (insead.edu)
  • In this way, the observer will not accelerate and measurements of the particle's acceleration will be the same from any reference of this type. (slideshare.net)
  • In comparison, a jumping antelope accelerates at 1.6 g, astronauts experience maximum acceleration of less than 4 g during a Space Shuttle launch, and fleas accelerate at 200 g. (newscientist.com)
  • DXVA, or DirectX Video Acceleration, is Microsoft's video interface that allows the GPU to accelerate iDCT, motion compensation, de-interlacing, and color correction. (phoronix.com)
  • Since the wagon is going to accelerate straight forward, you want the X-Components of each force which pet 1 and pet 2 exert to be equal and opposite, and hence no acceleration in either the left or right direction. (physicsforums.com)
  • The University of Strathclyde's EPSRC Impact Acceleration Account (IAA) will accelerate the impact from Strathclyde's Engineering and Physical Sciences research, with the aim of improving society and the economy. (strath.ac.uk)
  • In a laser accelerator, a defined particle source has been missing so far, and the electrons to accelerate were trapped randomly along the acceleration distance. (chemistry2011.org)
  • The tangential acceleration (which is proportional to the angular acceleration) has to do with the rate at which the angular speed changes. (physicsforums.com)
  • If the rate of rotation is constant, the tangential acceleration is zero. (physicsforums.com)
  • The term "acceleration" is used in physics to describe a change in velocity for an object, and it is a vector quantity, which means that it indicates both magnitude and direction. (wisegeek.com)
  • An object moving at rest one second, then moving at 10 m/s the next second, 20 m/s the next, and 30 m/s the following second has an acceleration of 10 m/s 2 as this is the change in velocity. (wisegeek.com)
  • Acceleration is just the change in velocity over time. (khanacademy.org)
  • So the acceleration here-- and we're just going to assume that we're going to the right, 0 miles per hour and 60 miles per hour to the right-- so it's going to be change in velocity. (khanacademy.org)
  • Analyze velocity vectors of an object undergoing uniform circular motion to determine the direction of the acceleration vector at any given moment. (vernier.com)
  • Negative acceleration simply indicates the direction of the acceleration, and can mean that an object is either increasing or decreasing in velocity. (wisegeek.com)
  • In this science activity, you will explore the relation between time and distance traveled when a moving object is under gravity's constant acceleration. (scientificamerican.com)
  • How does this constant acceleration affect the distance that an object travels over time? (scientificamerican.com)
  • AKQA and clients were joined by one of Britain's foremost photographic artists, Dan Holdsworth (pictured left), who presented his latest work Acceleration Structures, in partnership with the Rolls-Royce Art Programme. (akqa.com)
  • NHTSA currently is collecting acceleration-malfunction data on 1984- and 1985-model Audi 5000S cars sold in the United States. (washingtonpost.com)
  • Now, in a blog post , the company said that it routinely reviews customer complaints of unintended acceleration with NHTSA. (yahoo.com)
  • We are transparent with NHTSA, and routinely review customer complaints of unintended acceleration with them. (yahoo.com)
  • Accelerations are vector quantities (they have magnitude and direction) and add according to the parallelogram law. (dbpedia.org)
  • Accelerations are vector quantities (in that they have magnitude and direction). (wikipedia.org)
  • An object's acceleration is the net result of any and all forces acting on the object, as described by Newton's Second Law. (dbpedia.org)
  • The acceleration tensor is an antisymmetric tensor describing the four-acceleration of particles and consisting of six components. (wikiversity.org)
  • Any physical system, whether a point material particle or a connected set of particles, has its own four-acceleration. (wikiversity.org)
  • As a result, the four-acceleration of typical particles inside bodies, averaged over the volume with the sizes of such particles, is a certain function of coordinates and time, leading to internal stresses in the matter. (wikiversity.org)
  • Fermi acceleration, sometimes referred to as diffusive shock acceleration (a subclass of Fermi acceleration), is the acceleration that charged particles undergo when being repeatedly reflected, usually by a magnetic mirror (see also Centrifugal mechanism of acceleration). (wikipedia.org)
  • This is because Fermi acceleration only applies to particles with energies exceeding the thermal energies, and frequent collisions with surrounding particles will cause severe energy loss and as a result no acceleration will occur. (wikipedia.org)
  • In the environment of a shock, only particles with energies that exceed the thermal energy by much (a factor of a few at least) can cross the shock and 'enter the game' of acceleration. (wikipedia.org)
  • Imagination Technologies has posted a series of job openings for OpenCL engineers, indicating that the open, general purpose GPU parallelism technology Apple spearheaded for use in Mac OS X Snow Leopard is destined to also play a significant role in boosting embedded graphics and video acceleration on the company's future handheld products. (appleinsider.com)
  • Dedicated PowerVR cores built into an ARM or Intel Atom SoC or "System on a Chip" will not only provide improved graphics power for gaming, but also enable support for higher quality video acceleration. (appleinsider.com)
  • These video acceleration improvements to the ATI Linux driver aren't exactly end-user friendly yet, but today we have information on how those interested can begin using the X-Video Motion Compensation extension with their ATI hardware along with what the XvBA extension will provide users in regards to advanced video acceleration that is very similar to Microsoft's DirectX Video Acceleration. (phoronix.com)
  • XvBA isn't yet usable by end-users on Linux, but we have acquired some information on this UVD2 video acceleration interface. (phoronix.com)
  • XvBA is mirrored off DXVA since all of their hardware takes DXVA formatted packets so it was easiest and most efficient to model this Linux video acceleration interface after what they are doing on Windows. (phoronix.com)
  • We have found out that early on in the XvBA development they had looked at VA-API but as aforementioned, they wished to follow a similar design to the DirectX Video Acceleration design. (phoronix.com)
  • PC-Crash™, a widely used crash analysis software package, incorporates the capability for modeling non-constant vehicle acceleration, where the acceleration rate varies with speed, weight, engine power, the degree of throttle application, and the roadway slope. (sae.org)
  • WASHINGTON (Reuters) - The U.S. Justice Department has reached a $1 billion settlement with Toyota Motor Corp over the automaker's handling of consumer complaints tied to unintended vehicle acceleration and is set to announce the agreement as early as Wednesday, CNN reported. (yahoo.com)
  • In late 2009 Toyota became the subject of media and U.S. government scrutiny after multiple deaths and injuries were attributed to accidents resulting from the unintended and uncontrolled acceleration of its cars. (northwestern.edu)
  • The acceleration issue prompted Toyota to recall millions of vehicles beginning in 2009. (yahoo.com)
  • Toyota has recalled more than 14 million vehicles worldwide due to acceleration problems in several models and brake defects with the Prius hybrid. (dailyherald.com)
  • In a recent news report CNN has revealed a translated Toyota memo which links problems of the car manufacturer regarding an electronic acceleration concern to a software issue. (infoq.com)
  • The National Highway Traffic and Safety Administration received a complaint on Tuesday for the unintended acceleration of a Tesla Model S. We haven't heard much of that term since the large Toyota recall in 2009. (autoweek.com)
  • Explore the acceleration of innovation that has occurred during unexpected business conditions. (ul.com)
  • Explore the evidence for innovation acceleration and how it is impacting businesses. (ul.com)
  • He spoke at the recent the IoT Innovation North America virtual conference where he discussed 5G and the acceleration of "Industry 4.0" and the fruits expected to come out of this convergence. (informationweek.com)
  • As a vector, the calculated net force is equal to the product of the object's mass (a scalar quantity) and its acceleration. (dbpedia.org)
  • Acceleration" is a measurement regarding the change in an object's velocity, and is often expressed in terms of meters per second, per second (m/s/s or m/s 2 ). (wisegeek.com)
  • The orientation of an object's acceleration is given by the orientation of the net force acting on that object. (wikipedia.org)
  • New observations of high entropy gas in the outer parts of local, rich clusters of galaxies have re-kindled my interest in cluster accretion shocks as sites of UHE cosmic ray acceleration. (stanford.edu)
  • External shocks tend to produce growth accelerations that eventually fizzle out, while economic reform is a statistically significant predictor of growth accelerations that are sustained. (repec.org)
  • There are two types of Fermi acceleration: first-order Fermi acceleration (in shocks) and second-order Fermi acceleration (in the environment of moving magnetized gas clouds). (wikipedia.org)
  • Sept. 15 1998, 899 jolts above a threshold of 2 g (1 g is the that this tool would be used primarily for road and truck acceleration of gravity. (cdc.gov)
  • The force of gravity pulls downward on the object as it travels upwards in a positive direction, giving it an acceleration of about -10 m/s 2 . (wisegeek.com)
  • What does this tell you about the effect of gravity on the velocity and acceleration of the marble as it rolled? (scientificamerican.com)
  • Core Motion reports acceleration in units of Earth gravity, so multiply by 9.81 to get m/s. (stackoverflow.com)
  • Last week, the National Highway Traffic and Safety Administration said it would review a defect petition that cited 127 consumer complaints of alleged unintended acceleration of Tesla electric vehicles that may have contributed to or caused 110 crashes and 52 injuries. (yahoo.com)
  • v = ∫ a d t {\displaystyle \mathbf {v} =\int \mathbf {a} \ dt} Likewise, the integral of the jerk function j(t), the derivative of the acceleration function, can be used to find acceleration at a certain time: a = ∫ j d t {\displaystyle \mathbf {a} =\int \mathbf {j} \ dt} Acceleration has the dimensions of velocity (L/T) divided by time, i.e. (wikipedia.org)
  • In addition there is great interest in understanding astrophysical particle acceleration and propagation as this provides the background agains which putative dark matter sources are being sought. (stanford.edu)
  • David Darling's article on Fermi acceleration Rieger, Bosch-Ramon and Duffy: Fermi acceleration in astrophysical jets. (wikipedia.org)
  • Acceleration, in physics, is the rate of change of velocity of an object with respect to time. (dbpedia.org)
  • Negative acceleration indicates that the velocity of an object is changing in a negative direction, which can mean that it is traveling either slower or faster. (wisegeek.com)
  • When applying the equation of motion, it is important that the acceleration of the particle be measured with respect to a reference frame that is either fixed or translates with a constant velocity. (slideshare.net)
  • This visualization of particle acceleration across a shock is a simplied representation of shock drift acceleration (SDA) showing the motion of electrons (yellow) and protons (blue). (nasa.gov)
  • If the vehicle turns, an acceleration occurs toward the new direction and changes its motion vector. (wikipedia.org)
  • The acceleration of the vehicle in its current direction of motion is called a linear (or tangential during circular motions) acceleration, the reaction to which the passengers on board experience as a force pushing them back into their seats. (wikipedia.org)
  • When changing direction, the effecting acceleration is called radial (or orthogonal during circular motions) acceleration, the reaction to which the passengers experience as a centrifugal force. (wikipedia.org)
  • However, growth accelerations tend to be highly upredictable: the vast majority of growth accelerations are unrelated to standard determinants and most instances of economic reform do not produce growth accelerations. (repec.org)
  • Intel® I/O Acceleration Technology (Intel® I/OAT), a component of Intel® Virtualization Technology for Connectivity, improves data flow across the platform to enhance system performance. (intel.com)
  • In the research reported here, PC-Crash 9.0 was used to model the full-throttle acceleration capabilities of three vehicles with automatic transmissions - a 2006 Ford Crown Victoria Police Interceptor (CVPI), a 2000 Cadillac DeVille DTS, and a 2003 Ford F150. (sae.org)
  • How to calculate the acceleration from a velocity time graph. (screencast.com)
  • The distance-time graph for acceleration is always a straight line. (google.com)
  • that is, the area under the curve of an acceleration vs. time (a vs. t) graph corresponds to velocity. (wikipedia.org)
  • Intel® I/O Acceleration Technology moves data more efficiently through servers. (intel.com)
  • where ACCELERATION defines how many times faster the cursor will move than the default speed, when the cursor moves more than THRESHOLD pixels in a short time. (archlinux.org)
  • To transform the components of the acceleration tensor from one inertial system to another we must take into account the transformation rule for tensors. (wikiversity.org)
  • The tri-axial piezoresistive sensor employs a diaphragm structure, differing from conventional cantilever type sensors, enabling the sensor to detect tri-directional accelerations. (sae.org)
  • The automaker argued that its vehicles are designed to avoid unintended acceleration, noting that its system will default to cutting off motor torque if the two independent position sensors on its accelerator pedals register any error. (yahoo.com)
  • It is appropriate that during the centenary of the discovery of cosmic rays by Victor Hess, there should be renewed interest in the acceleration of high energy protons and electrons. (stanford.edu)
  • The acceleration of cosmic rays in shock fronts - I". Monthly Notices of the Royal Astronomical Society. (wikipedia.org)
  • when the direction of velocity and acceleration are the same the object is moving faster, and when they are the opposite the object is slowing down. (wisegeek.com)
  • I am developing an iPhone application that is supposed to calculate acceleration in m/s. (stackoverflow.com)
  • TLS acceleration (formerly known as SSL acceleration ) is a method of offloading processor-intensive public-key encryption for Transport Layer Security (TLS) and its predecessor Secure Sockets Layer (SSL) to a hardware accelerator. (wikipedia.org)
  • Allwinner Technology provides a hardware cryptographic accelerator in its A10, A20, A30 and A80 ARM system-on-chip series, and all ARM CPUs have acceleration in the later ARMv8 architecture. (wikipedia.org)
  • Because of the increased resources required to enable hardware acceleration, your app will consume more RAM. (android.com)
  • However, because hardware acceleration is not supported for all of the 2D drawing operations, turning it on might affect some of your custom views or drawing calls. (android.com)
  • To remedy this, Android gives you the option to enable or disable hardware acceleration at multiple levels. (android.com)
  • See Control hardware acceleration . (android.com)
  • If your application performs custom drawing, test your application on actual hardware devices with hardware acceleration turned on to find any problems. (android.com)
  • The Unsupported drawing operations section describes known issues with hardware acceleration and how to work around them. (android.com)
  • If your application does not behave properly with hardware acceleration turned on globally, you can control it for individual activities as well. (android.com)
  • XBitLabs reports that ATI's upcoming Radeon graphics processor will feature hardware acceleration of the H.264 Advanced Video Codec. (macrumors.com)
  • Re: Does your CPU support hardware SHA1 acceleration? (mail-archive.com)
  • Hardware acceleration isn't crucial on desktop, and the work-around is fine. (mozilla.org)
  • trink.co.uk wrote and made these points on the subject of "Does your CPU support hardware SHA1 acceleration? (mail-archive.com)
  • Adobe Flash Player 10 builds on the capabilities of the world's most pervasive application runtime with new support for custom filters and effects, native 3D transformation and animation, advanced audio processing, and GPU hardware acceleration. (neowin.net)
  • Optimized hardware acceleration of both AI inference and other performance-critical functions by tightly coupling custom accelerators into a dynamic architecture silicon device. (xilinx.com)
  • because with a GPU, the other performance-critical functions of the application must still run in software, without the performance or efficiency of custom hardware acceleration. (xilinx.com)
  • The research reported here offers a validation of this capability, demonstrating that PC-Crash can be used to realistically model the build-up of a vehicle's speed under maximal acceleration. (sae.org)
  • It also found that in all cases, a vehicle's braking power was sufficient to stop a car, even under full acceleration. (deseretnews.com)
  • The results suggest that multiple accelerometers aid in recognition because conjunctions in acceleration feature values can effectively discriminate many activities. (psu.edu)
  • So, an object traveling at constant speed in a circular path is undergoing an acceleration. (vernier.com)
  • The result is that there is greater overall throughput because the propagation delay is decreased from being end-to-end propagation time to the propagation delay between individual components - the end-points and the acceleration devices. (networkworld.com)
  • Speed equals acceleration divided by time. (google.com)
  • Tensor components are at the same time components of the two three-dimensional vectors - acceleration field strength and the solenoidal acceleration vector. (wikiversity.org)
  • The Red Hat-Intel Solution Acceleration Program will give customers real-time access to the critical information, tools and support they need to build and optimize high-value Linux solutions on Intel-based platforms," said Jon Bork, Director of Intel's Open Source Program Office. (redhat.com)
  • When information from a Global Positioning System is recorded at the same time as shock pressures or acceleration data, then the exact location of an event can be determined. (cdc.gov)
  • The features of Intel I/OAT enhance data acceleration across the computing platform. (intel.com)
  • The Intel® Data Analytics Acceleration Library (Intel® DAAL) helps speed big data analytics by providing highly optimized algorithmic building blocks for all data analysis stages (Pre-processing, Transformation, Analysis, Modeling, Validation, and Decision Making) for offline, streaming and distributed analytics usages. (intel.com)
  • Sometimes data centers employ dedicated servers for TLS acceleration in a reverse proxy configuration. (wikipedia.org)
  • Experimental approach sure or acceleration data alone. (cdc.gov)
  • Personnel from Phelps Dodge ers installed the equipment in a Caterpillar 793 haul suggested that combining acceleration data with infor- truck. (cdc.gov)
  • Acceleration data was collected from 20 subjects without researcher supervision or observation. (psu.edu)
  • Mean, energy, frequency-domain entropy, and correlation of acceleration data was calculated and several classifiers using these features were tested. (psu.edu)
  • Presently, it is difficult to tell what caused a jolt to the truck using either pressure or acceleration data alone. (cdc.gov)
  • Collect acceleration, rotation, and altitude data in the classroom or in the field. (vernier.com)
  • The Go Direct ® Acceleration Sensor is fully supported with LabQuest 2 (version 2.8.5) , a standalone data logger with built-in graphing and analysis software. (vernier.com)
  • We have developed a tri-axial piezoresistive acceleration sensor for automotive applications such as advanced brake control, active suspension control, and air bag systems. (sae.org)
  • By detecting tri-axial accelerations through the use of a single chip, the sensor is expected to allow for the development of low-cost, compact systems. (sae.org)
  • The Go Direct Acceleration Sensor connects via Bluetooth® wireless technology or via USB to your device. (vernier.com)
  • This 3-axis acceleration sensor has two acceleration ranges plus an altimeter and a 3-axis gyroscope. (vernier.com)