Search Results
Results 51 - 100 of 3186
1 2 3 4 5 6 7 8 9 10 >
Friedman C - - 2014
To determine the two-dimensional kinematics of the California sea lion foreflipper during thrust generation, a digital, high-definition video is obtained using a non-research female sea lion at the Smithsonian National Zoological Park in Washington, DC. The observational videos are used to extract maneuvers of interest--forward acceleration from rest using the ...
Herbst Michael M Department of Radiology, Medical Physics, University Medical Center Freiburg, Germany; Department of Radiology, JABSOM, Honolulu, Hawaii, - - 2014
Recently, a new algorithm was introduced to combine segments of under-sampled diffusion weighted data using multiplexed sensitivity encoding. While the algorithm provides good results in cooperative volunteers, motion during the data acquisition is not accounted for. In this work, the continuous prospective motion correction of a segmented diffusion weighted acquisition ...
Feeney Emma L EL Sensory Evaluation Center, College of Agricultural Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA ; Department of Food Science, College of Agricultural Sciences, The Pennsylvania State University, University Park, Pennsylvania, - - 2014
The sense of taste is often referred to as a 'nutritional gatekeeper', thought to have evolved to indicate energy sources and prevent ingestion of potential toxins. Fungiform papillae are structures on the anterior tongue in which taste buds are situated. They are concentrated at the tongue's tip and they can ...
Gwak Doo Young DY AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea gwak01@snu.ac.kr, goltongbam@snu.ac.kr, - - 2014
The powertrain of electric vehicles generates an unfamiliar acoustical environment for customers. This paper seeks optimal interior sound for electric vehicles based on psychoacoustic knowledge and musical harmonic theory. The concept of inserting a virtual sound, which consists of the subharmonics of an existing high-frequency component, is suggested to improve ...
Belcher Andrew H AH Department of Radiation and Cellular Oncology, The University of Chicago, Chicago, Illinois - - 2014
The use of medical technology capable of tracking patient motion or positioning patients along 6 degree-of-freedom (6DOF) has steadily increased in the field of radiation therapy. However, due to the complex nature of tracking and performing 6DOF motion, it is critical that such technology is properly verified to be operating ...
May Tobias T Centre for Applied Hearing Research, Department of Electrical Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, - - 2014
A monaural speech segregation system is presented that estimates the ideal binary mask from noisy speech based on the supervised learning of amplitude modulation spectrogram (AMS) features. Instead of using linearly scaled modulation filters with constant absolute bandwidth, an auditory-inspired modulation filterbank with logarithmically scaled filters is employed. To reduce ...
Hati Archita - - 2014
We report a high-performance 92 to 96 GHz cross-spectrum phase modulation (PM) noise measurement system. Utilizing this system, we measured residual PM noise of several amplifiers, mixers, and frequency multipliers. Data for the measurement system noise floor and the PM noise of W-band components are reported. These results can serve ...
Endo Hiroshi H a Human Technology Research Institute , National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba , - - 2014
This study examined whether manipulability during smartphone thumb-based touch operations could be predicted by the following robotic manipulability indices: the volume and direction of the 'manipulability ellipsoid' (MEd), both of which evaluate the influence of kinematics on manipulability. Limits of the thumb's range of motion were considered in the MEd ...
Hansen Rói R Hearing Systems, Department of Electrical Engineering, Technical University of Denmark, DTU Bygning 352, Ørsteds Plads, 2800 Kongens Lyngby, - - 2014
Pure-tone frequency difference limens (FDLs) have been shown to vary in the vicinity of spontaneous otoacoustic emissions (SOAEs). As lower FDLs have been observed near SOAEs when measured ipsi- and contralaterally to the emission ear, it has been proposed that prolonged ongoing stimulation of nerve cells tuned to the SOAE ...
Neves Katy Andrews KA Department of Exercise Sciences, Brigham Young University , Provo, UT, - - 2014
In this study we examined how hill running affects the Achilles tendon, a common location for injuries in runners. Twenty females ran for 10 min on each of three randomly ordered grades (-6%, 0 and +6%) at speeds selected to match the metabolic rates. Achilles tendon (AT) cross-sectional area (CSA) ...
Byrne Andrew J AJ Department of Psychology, University of Minnesota, Minneapolis, Minnesota - - 2014
Real-world auditory stimuli are highly variable across occurrences and sources. The present study examined the sensitivity of human listeners to differences in global stimulus variability. In a two-interval, forced-choice task, variance discrimination was measured using sequences of five 100-ms tone pulses. The frequency of each pulse was sampled randomly from ...
Stone Maureen M Department of Neural and Pain Science, Department of Orthodontics, University of Maryland School of Dentistry, Baltimore, MD, USA. telephone: 410-706-1269, fax: 410-706-0865, - - 2014
The production of speech includes considerable variability in speech gestures despite our perception of very repeatable sounds. Variability is seen in vocal tract shapes and tongue contours when different speakers produce the same sound. This study asks whether internal tongue motion patterns for a specific sound are similar across subjects, ...
Iglesias Pablo A PA Departments of Cell Biology, Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA. - - 2014
The cells' ability to adapt to changes in the external environment is crucial for the survival of many organisms. There are two broad classes of signalling networks that achieve perfect adaptation. Both rely on complementary regulation of the response by an external signal and an inhibitory process. In one class ...
Lee Jun Haeng - - 2014
We propose a real-time hand gesture interface based on combining a stereo pair of biologically inspired event-based dynamic vision sensor (DVS) silicon retinas with neuromorphic event-driven postprocessing. Compared with conventional vision or 3-D sensors, the use of DVSs, which output asynchronous and sparse events in response to motion, eliminates the ...
Santer Roger D RD Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Aberystwyth, Ceredigion, United - - 2014
Palpalis group tsetse flies are the major vectors of human African trypanosomiasis, and visually-attractive targets and traps are important tools for their control. Considerable efforts are underway to optimise these visual baits, and one factor that has been investigated is coloration. Analyses of the link between visual bait coloration and ...
Ros Ivo G IG Harvard University, United States; - - 2014
The complexity of low speed maneuvering flight is apparent from the combination of two critical aspects of this behavior: high power and precise control. To understand how such control is achieved we examined the underlying kinematics and resulting aerodynamic mechanisms of low speed turning flight in the pigeon (Columba livia). ...
Napotnik Julie J Department of Civil and Environmental Engineering, Lehigh University, 1 W. Packer Avenue, Bethlehem, PA 18015, USA E-mail: - - 2014
Biosand filters (BSFs) are increasingly designed using smaller and/or lighter casing material in an effort to reduce logistical requirements and implementation costs. The increased portability of a smaller, lighter design presents a potential negative consequence: the ability to move the installed/operational filter by the homeowner and potentially disturb the system. ...
Calderan Susannah S Australian Marine Mammal Centre, Australian Antarctic Division, Channel Highway, Kingston, Tasmania 7050, Australia susannah.calderan@scoter.org, brian.miller@aad.gov.au, kymcollins77@gmail.com, paulensor@xtra.co.nz, - - 2014
Simultaneous sightings and acoustic detections of sei whales (Balaenoptera borealis) are scarce, and there are few published data describing their vocalizations. Analysis of recordings from directional frequency analysis and recording sonobuoys in the presence of sei whales in the Southern Ocean in March 2013 identified both downsweep and upsweep calls. ...
Sugiyama Takashi T Graduate School of Physical Education, National Institute of Fitness and Sports in Kanoya , Kagoshima, - - 2014
The present study aimed to clarify the asymmetry between the dominant (DL) and non-dominant takeoff legs (NDL) in terms of lower limb behavior during running single leg jumps (RSJ) in collegiate male basketball players in relation to that of the jump height. Twenty-seven players performed maximal RSJ with a 6 ...
Cunningham Kane A KA Department of Ocean Sciences, Long Marine Laboratory, University of California, Santa Cruz, 100 Shaffer Road, Santa Cruz, California - - 2014
Standard audiometric data, such as audiograms and critical ratios, are often used to inform marine mammal noise-exposure criteria. However, these measurements are obtained using simple, artificial stimuli-i.e., pure tones and flat-spectrum noise-while natural sounds typically have more complex structure. In this study, detection thresholds for complex signals were measured in ...
Macherey Olivier O MRC Cognition & Brain Sciences Unit, 15 Chaucer Road, Cambridge CB2 7EF, - - 2014
Five normally hearing listeners pitch-ranked harmonic complexes of different fundamental frequencies (F0s) filtered in three different frequency regions. Harmonics were summed either in sine, alternating sine-cosine (ALT), or pulse-spreading (PSHC) phase. The envelopes of ALT and PSHC complexes repeated at rates of 2F0 and 4F0. Pitch corresponded to those rates ...
Ishihara D - - 2014
The relative importance of the wing’s inertial and aerodynamic forces is the key to revealing how the kinematical characteristics of the passive pitching motion of insect flapping wings are generated, which is still unclear irrespective of its importance in the design of insect-like micro air vehicles. Therefore, we investigate three ...
Halperin Israel I School of Human Kinetics and Recreation, Memorial University of Newfoundland , St. John's, Newfoundland, - - 2014
Most studies have examined pacing strategies with cyclical activities (running and cycling). It has been demonstrated that males employ different pacing strategies during repeated maximal voluntary contractions (MVCs) dependent upon a known endpoint. Since different fatiguing mechanisms have been identified between the genders, it is not known if females use ...
Seo Yu-Jin YJ *Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, **Department of Orthodontics, Kyung Hee University School of Dentistry, - - 2014
Summary OBJECTIVE: To evaluate the effects of self-ligating bracket (SLB) type and vibration on frictional force and stick-slip phenomenon (SSP) in diverse tooth displacement conditions when a levelling/alignment wire was drawn. A total of 16 groups were tested (n = 10/group): Two types of SLBs [active SLB (ASLB, In-Ovation R) ...
Lugli Marco M Department of Neurosciences, University of Parma, 43100 Parma, - - 2014
Fish shelters (flat stones, shells, artificial covers, etc., with a hollow beneath) increase the sound pressure levels of low frequency sounds (<150 Hz) outside the nest cavity, see Lugli [(2012). J. Acoust. Soc. Am. 132, 3512-3524]. Since some calling males only produce sound when a female is inside the shelter, this ...
Hao Wei W New Jersey Institute of Technology, Department of Civil and Environmental Engineering, University Heights, Newark, NJ 07102, USA. Electronic address: - - 2014
Based on the Federal Railway Administration (FRA) database, approximately 62% of the collisions at highway-rail crossings occurred at locations with active controls (gate and flashing lights), followed by passive controls (cross bucks and stop signs) with approximately 28% of accidents. The study applied an ordered probit model to explore the ...
Pogány A A Eötvös Loránd University Department of Ethology Pázmány Péter sétány 1/c H-1117 Budapest - - 2014
Automated behavioural observations are routinely used in many fields of biology, including ethology, behavioural ecology and physiology. When preferences for certain resources are investigated, the focus is often on simple response variables, such as duration and frequency of visits to choice chambers. Here we present an automated motion detector system ...
Bibbs Christopher Stephen CS Entomology & Insect Science Program, College of Agriculture and Life Sciences, University of Arizona, 1140 E. South Campus Dr., Forbes 410, Tucson, AZ 85721, - - 2014
The bark scorpion, Centruroides sculpturatus Ewing, is a nocturnal, cryptic, nonburrowing, mobile species that is common in urban landscapes spanning the desert southwest. Bark scorpions are often found in dense localized populations in cities, but the question of whether this is because the species is metabolically movement limited or choose ...
Raviv Ofri O The Edmond & Lily Safra Center for Brain Sciences, Interdisciplinary Center for Neural Computation, Hebrew University, Jerusalem, - - 2014
Biases such as the preference of a particular response for no obvious reason, are an integral part of psychophysics. Such biases have been reported in the common two-alternative forced choice (2AFC) experiments, where participants are instructed to compare two consecutively presented stimuli. However, the principles underlying these biases are largely ...
Tavartkiladze George G * National Research Centre for Audiology and Hearing Rehabilitation , Moscow , - - 2014
Objective: To determine whether new technology for intraoperative evoked compound action potential (ECAP) threshold measurements-the CR120 Intraoperative Remote Assistant device-is comparable to the existing Custom Sound(®) clinical system, as well as assess test-retest accuracy of the systems. Design: Within subject, repeated measures comparative design. Study sample: ECAP data were collected ...
Bernstein Leslie R LR Departments of Neuroscience and Surgery (Otolaryngology), University of Connecticut Health Center, Farmington, Connecticut - - 2014
Binaural detection was measured as a function of the center frequency, bandwidth, and interaural correlation of masking noise. Thresholds were obtained for 500-Hz or 125-Hz Sπ tonal signals and for the latter stimuli (noise or signal-plus-noise) transposed to 4 kHz. A primary goal was assessment of the generality of van der ...
Tremblay Marilyn M *Radiation Protection Bureau, 775 Brookfield Road, Ottawa, Ontario, Canada; †2424 Erwin Road, Hock Plaza Suite 302, Durham, NC - - 2014
The Human Monitoring Laboratory (Canada) has looked at parameters (lung volume, lung deposition pattern, etc.) that can affect the counting efficiency of its lung counting system. The calibration of the system is performed using the Lawrence Livermore National Laboratory (LLNL) torso phantom; however, the effect of respiratory motion cannot be ...
Gambarini Gianluca G Department of Endodontics, "Sapienza" University of Rome, Via Tommaso Salvini, 57 - 00197, Rome, - - 2014
The aim of the present study was to compare the cutting efficiency of Twisted File instruments used in continuous rotation or TF Adaptive motion and evaluate if prolonged use significantly affected their cutting ability. 20 new NiTi instruments were used in the present study (TF tip size 35, 0.06 taper; ...
Lee Chiwon C The Interdisciplinary Program for Bioengineering, Graduate School, Seoul National University, Seoul, 110-744, Korea, - - 2014
A torque transfer system (TTS) that measures grip forces is developed to resolve a potential drawback of the current da Vinci robot system whose grip forces vary according to the different postures of its EndoWrist. A preliminary model of EndoWrist Inner Mechanism Model (EIMM) is also developed and validated with ...
Cui Shan-Shan SS Department of Ophthalmology, First Hospital of Tsinghua University, Beijing 100016, - - 2014
Objective To assess the agreement between gonioscopy and ultrasound biomicroscopy (UBM) in detecting angle closure in Chinese patients with shallow anterior chamber. Methods An observational comparative study of the two different examination methods was conducted. Patients with normal intraocular pressure and temporal peripheral anterior chamber depth less than a quarter ...
Garner Brian A BA Department of Mechanical Engineering, Baylor University, Waco, TX, USA. Electronic address: - - 2014
A prevailing rationale for equine assisted therapies is that the motion of a horse can provide sensory stimulus and movement patterns that mimic those of natural human activities such as walking. The purpose of this study was to quantitatively measure and compare human pelvis motions when walking to those when ...
Gourgoulis Vassilios V a Department of Physical Education and Sport Science , Democritus University of Thrace , Komotini , - - 2014
Abstract The aim of this study was to assess the effect of the hand's acceleration on the propulsive forces and the relative contribution of the drag and lift on their resultant force in the separate phases of the front crawl underwater arm stroke. Ten female swimmers swam one trial of ...
Leigh Steven S Centre for Theoretical Neuroscience, University of Waterloo, Waterloo, ON, - - 2014
Damage to the right parietal cortex often leads to a syndrome known as unilateral neglect in which the patient fails to attend or respond to stimuli in left space. Recent work attempting to rehabilitate the disorder has made use of rightward-shifting prisms that displace visual input further rightward. After a ...
Smith Beth A BA Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar Street, CHP 155, Los Angeles, CA, 90089-9006, - - 2014
The backward push and release test (PRT) is a standardized clinical test of postural responses elicited by perturbations. Our goal was to determine reliability of administration and response. This will inform clinical administration and determine whether to develop an instrumented version. One examiner administered 10 backward PRT trials to adults ...
Kiers Henri H University of Applied Sciences Utrecht, Research Group Lifestyle and Health, Utrecht, The Netherlands. Electronic address: - - 2014
Patients with non-specific low back pain (LBP) may use postural control strategies that differ from healthy subjects. To study these possible differences, we measured the amount and structure of postural sway, and the response to muscle vibration in a working cohort of 215 subjects. Subjects were standing on a force ...
Deley Gaelle G INSERM - U1093 Cognition, Action, et Plasticité Sensorimotrice, Université de Bourgogne, Dijon, - - 2014
Introduction: Variable frequency trains (VFT) or train combinations have been suggested as useful strategies to offset the rapid fatigue induced by constant frequency trains (CFT) during electrical stimulation. However, most studies have been of short duration with limited functional application in those with spinal cord injury (SCI). We therefore tested ...
Parrington Lucy L a Institute of Sport, Exercise and Active Living (ISEAL) , College of Sport and Exercise Science, Victoria University , Melbourne , - - 2014
The handball pass is influential in Australian football, and achieving higher ball speeds in flight is an advantage in increasing distance and reducing the chance of interceptions. The purpose of this study was to provide descriptive kinematic data and identify key technical aspects of maximal handball performance. Three-dimensional full body ...
Mohan Kavya K Nanobioimaging Laboratory, Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, - - 2014
We propose two-photon excitation-based light-sheet technique for nano-lithography. The system consists of 2 π-configured cylindrical lens system with a common geometrical focus. Upon superposition, the phase-matched counter-propagating light-sheets result in the generation of identical and equi spaced nano-bump pattern. Study shows a feature size of as small as few tens ...
Venkataraman Vinay - - 2014
In this paper, we propose a general framework for tuning component-level kinematic features using therapists' overall impressions of movement quality, in the context of a Home-based Adaptive Mixed Reality Rehabilitation (HAMRR) system. We propose a linear combination of non-linear kinematic features to model wrist movement, and propose an approach to ...
Munce Thayne A TA 1Sanford Sports Science Institute, Sanford Health, Sioux Falls, SD, 2Sanford Research, Sioux Falls, SD, 3Department of Pediatrics, University of South Dakota Sanford School of Medicine, Sioux Falls, SD, 4Methodology and Data Analysis Division, Sanford Research, Sioux Falls, - - 2014
Football players are subjected to repetitive impacts that may lead to brain injury and neurologic dysfunction. Knowledge about head impact exposure (HIE) and consequent neurologic function among youth football players is limited. To measure and characterize HIE of youth football players throughout one season and explore associations between HIE and ...
Nartey Richard K RK Department of Behavioral Science, Oslo and Akershus University College, PO Box 4 St. Olavs Plass, 0130, Oslo, Norway, - - 2014
The present experiment showed that a simple discriminative function acquired by an abstract stimulus through simultaneous and/or successive discrimination training enhanced the formation of an equivalence class of which that stimulus was a member. College students attempted to form three equivalence classes composed of three nodes and five members (A→B→C→D→E), ...
Seo Jung-Tak - - 2014
A fully transparent quantum-dot light-emitting diode (QD-LED) was fabricated by incorporating two types (anode and cathode) of graphene-based electrodes which were controlled in their work functions and sheet resistances. Either gold nanoparticles or silver nanowires were inserted between layers of graphene to control the work function, whereas the sheet resistance ...
Talukdar Kaushik - - 2014
Sound rotational power and mobility is an integral component in functional performances such as throwing and striking. The purpose of this study was to examine the role of rotational power and mobility on cricket ball throwing velocity. Eleven professional cricketers and 10 Under-19 club level cricketers performed the chop and ...
McCarthy Chris C NICTA Computer Vision Research Group, Building A, 7 London Circuit, Canberra, Australia. Research School of Engineering, Australian National University, Canberra, - - 2014
Objective. We evaluated a novel visual representation for current and near-term prosthetic vision. Augmented depth emphasizes ground obstacles and floor-wall boundaries in a depth-based visual representation. This is achieved by artificially increasing contrast between obstacles and the ground surface via a novel ground plane extraction algorithm specifically designed to preserve ...
Tanaka Hirokazu H Japan Advanced Institute of Science and Technology - - 2014
The brain processes sensory and motor information in a wide range of coordinate systems, ranging from retinal coordinates in vision to body-centered coordinates in areas that control musculature. Here we focus on the coordinate system used in the motor cortex to guide actions and examine physiological and psychophysical evidence for ...
1 2 3 4 5 6 7 8 9 10 >