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Results 251 - 300 of 1053
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Hsieh Hong-Jung - - 2011
In human motion analysis, in situ calibration of the force plate is necessary to improve the accuracy of the measured ground reaction force (GRF) and center of pressure (COP). Few existing devices are capable of both static and dynamic calibration of the usually non-linear GRF and COP errors, while are ...
Wilken Jason - - 2011
Clinical measurement. To determine the validity and reliability of measures obtained using a custom-made device for assessing ankle dorsiflexion motion and stiffness. Limited dorsiflexion has been implicated in the evolution of foot pain in a number of clinical populations. Assessment of ankle dorsiflexion range of motion (ROM) is, therefore, commonly ...
Otto Klaus A - - 2011
In order to provide objective measures of anaesthetic depth for periods without clinical signs (e.g., cardiopulmonary bypass [CPB]), the correlation between the electroencephalographic Narcotrend index (NI), 95% spectral edge frequency (SEF95), median power frequency (MPF) and clinical stages of anaesthesia was investigated in 16 juvenile sheep. Data were recorded during ...
Das Saptarshi - - 2011
In this paper, a comparative study is done on the time and frequency domain tuning strategies for fractional order (FO) PID controllers to handle higher order processes. A new fractional order template for reduced parameter modelling of stable minimum/non-minimum phase higher order processes is introduced and its advantage in frequency ...
Ziessler Michael - - 2011
"Strong" versions of the ideomotor theory of action control claim that anticipations of the environmental effects that actions bring about are mandatory for response selection. This is considered to be the one and only way of how actions can be voluntarily selected. We studied this notion in a series of ...
Uhrí─▒ková Zdenka - - 2011
We present a validation study for TremAn - a tool for automatic detection of tremor and measurement of its frequency from video recordings. To assess the validity of TremAn we designed a study consisting of tremor assessment from video, by accelerometry and by clinical evaluation using Fahn-Tolosa- Marin scale. 26 ...
Eliav Ami - - 2011
An in-depth evaluation of the usability and situation awareness performance of different displays and destination controls of robots are presented. In two experiments we evaluate the way information is presented to the operator and assess different means for controlling the robot. Our study compares three types of displays: a "blocks" ...
Liu Yan - - 2011
Abstract The effectiveness of electrocardiogram (ECG) monitors can be significantly impaired by motion artifacts, which can trigger false alarms, cause misdiagnoses, and lead to inappropriate treatment decisions. Skin stretch associated with patient motion is the most significant source of motion artifacts in current ECG monitoring. In this study, motion artifacts ...
Chan Ken W L - - 2011
In this study, two experiments were conducted to examine spatial stimulus-response compatibility (SRC) effects for a horizontal visual display with hand and foot controls. In experiment 1, the hand and foot controls were in a hands above and feet below vertical plane, such that the display and controls were orthogonal ...
Killion Mead C - - 2011
A large number of soldiers returning from war report hearing loss and/or tinnitus. Many deployed soldiers decline to wear their hearing protection devices (HPDs) because they feel that earplugs interfere with their ability to detect and localize the enemy and their friends. The detection problem is easily handled in electronic ...
Park Yongwoo - - 2011
A simple, highly accurate measurement technique for real-time monitoring of the group delay (GD) profiles of photonic dispersive devices over ultra-broad spectral bandwidths (e.g. an entire communication wavelength band) is demonstrated. The technique is based on time-domain self-interference of an incoherent light pulse after linear propagation through the device under ...
Sangiorgio Sophia N - - 2011
ABSTRACT: Study Design: A biomechanical study using human cadaveric lumbar spinal motion segments and three different posterior stabilization devices.Objective: To compare the range of motion, disc height, and foraminal area of a spinal motion segment intact, injured, and fixed with each of three posterior lumbar motion preservation devices.Summary of Background ...
Shibata Takashi - - 2011
Prolonged use of conventional stereo displays causes viewer discomfort and fatigue because of the vergence-accommodation conflict. We used a novel volumetric display to examine how viewing distance and the sign of the vergence-accommodation conflict affect discomfort and fatigue. In the first experiment, we presented a fixed conflict at short, medium, ...
Yanagisawa Takufumi - - 2011
Object A brain-machine interface (BMI) offers patients with severe motor disabilities greater independence by controlling external devices such as prosthetic arms. Among the available signal sources for the BMI, electrocorticography (ECoG) provides a clinically feasible signal with long-term stability and low clinical risk. Although ECoG signals have been used to ...
Odaira Chikayuki - - 2011
To evaluate the clinical performance of the Crystaleye Spectrophotometer(®), a dental color analysis system. Three color-measuring devices (Crystaleye Spectrophotometer(®), CAS-ID1, MSC-2000) were tested and the differences in color measurements among them were evaluated using Scheffe's F-test. Color measurements with the Crystaleye Spectrophotometer(®) were repeated 10 times by the same operator. ...
Joundi Raed A - - 2011
The physician is often seeking more efficient ways of performing patient assessments. Currently, measuring tremor frequency requires expensive and bulky equipment. We propose the use of the in-built accelerometer of the iPhone via the iSeismo application for rapid measurement of tremor frequency. We use this device in a series of ...
Zamora Jorge E - - 2011
To assess the performance and cervical (C)-spine movement associated with laryngoscopy using the Bullard laryngoscope (BL), GlideScope videolaryngoscope (GVL), Viewmax, and Macintosh laryngoscopes during conditions of a) unrestricted and b) restricted C-spine and temporomandibular joint (TMJ) mobility. Prospective, controlled, randomized, crossover study. University teaching hospital. 21 cadavers with intact C-spine ...
Schloss Karen B - - 2011
Previous studies of preference for and harmony of color combinations have produced confusing results. For example, some claim that harmony increases with hue similarity, whereas others claim that it decreases. We argue that such confusions are resolved by distinguishing among three types of judgments about color pairs: (1) preference for ...
Gaffney Allannah J - - 2011
To assess the inter-session repeatability of the Goldmann-Weekers adaptometer for the measurement of cone dark adaptation in a population of healthy subjects. Data were obtained from 31 healthy adults (mean age 21.5 ± 2.5) on 2 days. At each visit, pupils were dilated and a 96% bleach of cone photopigment was administered to ...
Mahto Mala - - 2011
Light chain disease is a variant of multiple myeloma in which the malignant population of marrow cells produces free monoclonal light chains but no heavy chain or complete immunoglobulin. The monoclonal light chains are small enough to be freely filtered by the kidneys and become Bence-Jones protein. Light chain disease ...
Fervers B - - 2011
Background Developing and updating high-quality guidelines requires substantial time and resources. To reduce duplication of effort and enhance efficiency, we developed a process for guideline adaptation and assessed initial perceptions of its feasibility and usefulness. Methods Based on preliminary developments and empirical studies, a series of meetings with guideline experts ...
Muchlinski Magdalena N - - 2011
One possible ecological scenario for the origin of primates is the archaic pollination and coevolution hypothesis. Its proponents contend that the consumption of nectar by some early primates and the resulting cross-pollination is an example of coevolution that drove adaptive radiations in some primates. This hypothesis is perhaps ecologically sound, ...
Lalwani Kirk - - 2011
Analyze pediatric ERG data for adverse events, interventions, and outcomes of propofol sedations performed in near-complete darkness. To demonstrate that deep sedation with propofol for ERG can be performed efficiently and safely in children in near-total darkness. Full-field electroretinography (ERG) is a valuable tool for the diagnosis of vision loss ...
Nimkingrat P - - 2011
Poor storage capacity is a major constraint limiting further expansion of the use of entomopathogenic nematodes. In order to prolong shelf life, a quiescent state of the dauer juveniles (DJs) should be induced. This can be attained by means of desiccation of DJs. In this study, 24 natural isolations of ...
Burr David C - - 2011
A. Bruno, I. Ayhan, and A. Johnston (2010) have recently challenged our report of spatiotopic selectivity for adaptation of event time (D. Burr, A. Tozzi, & M. C. Morrone, 2007) and also our claim that retinotopic adaptation of event time depends on perceived speed. To assist the reader judge this ...
Stoll Josef - - 2011
Mobile eyetracking is a recent method enabling research on attention during real-life behavior. With the EyeSeeCam, we have recently presented a mobile eye-tracking device, whose camera-motion device (gazecam) records movies orientated in user's direction of gaze. Here we show that the EyeSeeCam can extract a reliable vergence signal, to measure ...
da Silva Junior Evert Pereira - - 2011
Changes in thoracoabdominal motion are highly prevalent in patients with chronic respiratory diseases. Home care services that use telemedicine techniques and Internet-based monitoring have the potential to improve the management of these patients. However, there is no detailed description in the literature of a system for Internet-based monitoring of patients ...
Padoy Nicolas - - 2011
A growing number of medical datasets now contain both a spatial and a temporal dimension. Trajectories, from tools or body features, are thus becoming increasingly important for their analysis. In this paper, we are interested in recovering the spatial and temporal differences between trajectories coming from different datasets. In particular, ...
Krueger Wesley W O - - 2011
An eyewear mounted visual display ("User-worn see-through display") projecting an artificial horizon aligned with the user's head and body position in space can prevent or lessen motion sickness in susceptible individuals when in a motion provocative environment as well as aid patients undergoing vestibular rehabilitation. In this project, a wearable ...
Follum James D - - 2011
The Sunrise Alarm Clock is a device designed to be more effective than standard alarm clocks and more pleasant than specialty devices in waking the hearing impaired. This is accomplished with the inclusion of visual, physical, and audio alarms. The visual alarm stimulus is created by manipulating the light output ...
Schenkman Bo N - - 2011
Blind persons emit sounds to detect objects by echolocation. Both perceived pitch and perceived loudness of the emitted sound change as they fuse with the reflections from nearby objects. Blind persons generally are better than sighted at echolocation, but it is unclear whether this superiority is related to detection of ...
Mahendra Prashanth K V - - 2011
Noise is a common occupational health hazard in most industrial settings. An assessment of noise and its adverse health effects based on noise intensity is inadequate. For an efficient evaluation of noise effects, frequency spectrum analysis should also be included. This paper aims to substantiate the importance of studying the ...
Stimpert Alison K - - 2011
Humpback whales (Megaptera novaeangliae) are one of several baleen whale species in the Northwest Atlantic that coexist with vessel traffic and anthropogenic noise. Passive acoustic monitoring strategies can be used in conservation management, but the first step toward understanding the acoustic behavior of a species is a good description of ...
Kyberd Peter J - - 2011
Prosthetic wrists need to be compact. By minimizing space requirements, a wrist unit can be made for people with long residual limbs. This prosthetic wrist uses two motors arranged across the arm within the envelope of the hand. The drive is transmitted by a differential so that it produces wrist ...
Fanning James - - 2011
Trocar insertion injury has a high morbidity, mortality, and cost. The purpose of this study was to compare standard trocar entry with our reduced-force closed trocar entry technique by measuring trocar insertion force using a mechanical force gauge. In the operating room, the force gauge was inserted into a sterile ...
Wolfe Joanna M - - 2011
Members of the diverse butterfly families Nymphalidae (brush-footed butterflies) and Riodinidae (metalmarks) have reduced first thoracic limbs and only use two pairs of legs for walking. In order to address questions about the detailed morphology and evolutionary origins of these reduced limbs, the three thoracic limbs of 13 species of ...
Simpfendorfer Colin A - - 2011
To aid recovery efforts of smalltooth sawfish (Pristis pectinata) populations in U.S. waters a research project was developed to assess how changes in environmental conditions within estuarine areas affected the presence, movements, and activity space of this endangered species. Forty juvenile P. pectinata were fitted with acoustic tags and monitored ...
Lorussi Federico F Interdepartmental Research Center E - - 2011
A novel method devoted to the reconstruction of the joint angles in a kinematic chain is described. The reconstruction algorithm is based on the fusion of the information deriving from inertial sensors (accelerometers) and conductive elastomer strain sensors. Accelerometers provide a reliable reconstruction when they are employed as inclinometers in ...
Gritsch G G Austrian Institute of Technology, Donau-City-Strasse 1, 1220 Vienna, - - 2011
In this paper we show a proof of concept for novel automatic seizure onset zone detector. The proposed approach utilizes the Austrian Institute of Technology (AIT) seizure detection system EpiScan extended by a frequency domain source localization module. EpiScan was proven to detect rhythmic epileptoform seizure activity often seen during ...
Oliveira Jillian M JM Department of Mechanical Engineering at Massachusetts Institute of Technology, Cambridge, MA 02139, USA. - - 2011
Actuation of a robotic endoscope with increased torque output is presented. This paper will specifically focus on the motor module section of a robotic endoscope, which comprises of a pair of motors and gear reduction assemblies. The results for the endoscope and biopsy tool stiffness, as well as the stall ...
Taffoni F F Laboratory of Biomedical Robotics and Biomicrosystems, Università Campus Bio-Medico di Roma, via Àlvaro del Portillo 21, 00128 Roma, Italy. - - 2011
In this work, an alignment procedure of magneto-inertial units in the Special Orthogonal Space SO(3) is presented and discussed. The procedure, designed for ambulatory measurements of lower limb kinematic, is based on simple rotation movements around anatomical axes of hip joint and its accuracy is independent of the speed as ...
Rabinowitz Peter M - - 2011
Occupational noise-induced hearing loss (NIHL) is prevalent, yet evidence on the effectiveness of preventive interventions is lacking. The effectiveness of a new technology allowing workers to monitor daily at-ear noise exposure was analysed. Workers in the hearing conservation program of an aluminium smelter were recruited because of accelerated rates of ...
Mays Keith A - - 2010
OBJECTIVE: Mandibular movement is essential for speech, swallowing, and mastication. The purpose of this study was to test the hypothesis that altering oral cavity geometry would result in an increased vertical and more posterior jaw displacement during speech. DESIGN: Twelve English speaking female adult dentate volunteers, age range 21-31 (mean±SD ...
Mela David J - - 2010
There are several as-yet unresolved issues with the scientific substantiation and communication of product claims relating to satiety. Core issues include the context, meaning and scope of these claims, and thus the type of clinical evidence required to support them. In particular, there are a range of potential consumer use-contexts ...
Davies Theresa Claire - - 2010
Purpose. Individuals with visual impairment have difficulty detecting obstacles that are above waist height. A prototype device was developed to allow individuals to hear ultrasound reflections off environmental obstacles. The purpose of this research was to evaluate novices' ability to evaluate distance and pass through apertures using this device. Method. The first ...
Tham L K - - 2010
The investigation of patellar tendon reflex involves development of a reflex hammer holder, kinematic data collection and analysis of patellar reflex responses using motion analysis techniques. The main aim of this research is to explore alternative means of assessing reflexes as a part of routine clinical diagnosis. The motion analysis ...
Ilharreborde Brice B Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, MN, - - 2011
Treatment of chronic low back pain due to degenerative lumbar spine conditions often involves fusion of the symptomatic level. A known risk of this procedure is accelerated adjacent level degeneration. Motion preservation devices have been designed to provide stabilization to the symptomatic motion segment while preserving some physiologic motion. The ...
Hunt Gene - - 2010
Of all of the sources of evidence for evolution by natural selection, perhaps the most problematic for Darwin was the geological record of organic change. In response to the absence of species-level transformations in the fossil record, Darwin argued that the fossil record was too incomplete, too biased, and too ...
Subramanian Sreeram - - 2010
OBJECTIVE: To compare phototherapy devices based on their physical and photo-biological characteristics viz spectral properties, maximum and mean irradiance, treatable percentage of body surface area, decay of irradiance over time and in vitro photoisomerisation of bilirubin. DESIGN: In vitro experimental study. SETTING: Ocular pharmacy laboratory at a tertiary care hospital. ...
Sanei Saeid - - 2011
Murmur is the result of various heart abnormalities. A new robust approach for separation of murmur from heart sound has been suggested in this article. Singular spectrum analysis (SSA) has been adapted to the changes in the statistical properties of the data and effectively used for detection of murmur from ...
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