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Di Guo-Qing - - 2014
High-speed railway (HR, Electrified railway with service speed above 200km/h.) noise and conventional railway (CR, Electrified railway with service speed under 200km/h.) noise are different in both time and frequency domain. There is an urgent need to study the influence of HR noise and consequently, develop appropriate noise evaluation index ...
Lu Hai-Han - - 2014
A multiple-input-multiple-output (MIMO) visible light communication (VLC) system employing vertical cavity surface emitting laser (VCSEL) and spatial light modulators (SLMs) with 16-quadrature amplitude modulation (QAM)-orthogonal frequency-division multiplexing (OFDM) modulating signal is proposed and experimentally demonstrated. The transmission capacity of system is significantly increased by space-division demultiplexing scheme. With the assistance ...
Piening Erk P - - 2013
Given the limited understanding of temporal issues in extant theorizing about the link between human resource management (HRM) and performance, in this study we aim to shed light on how, when, and why HR interventions affect organizational performance. On the basis of longitudinal, multi-informant and multisource data from public hospital ...
Kim Jonghyun - - 2013
A self-paced treadmill that can simulate overground walking has the potential to improve the effectiveness of treadmill training for gait rehabilitation. We have implemented a self-paced treadmill without the need for expensive equipment such as a motion capture system and an instrumented treadmill. For this, an inexpensive depth sensor, ASUS ...
Turner Sally - - 2013
An investigation of how emergency vehicle lighting (EVL) can be improved is reported with reference to an analysis of police vehicle road traffic accidents (Study 1). In Study 2, 37 regular drivers were shown film clips of a marked police vehicle, in which flash rate (1 Hz, 4 Hz) and pattern (single, ...
Campbell Amity - - 2013
The aim of this study was to investigate the effect of pistol holster position on pistol draw time and performance of police officers. Proficient use of the lethal force option is critical to an officer's ability to survive. Traditionally, pistols were worn in hip holsters; however, recently, thigh holsters have ...
Reid Machar - - 2013
The development of a powerful and accurate serve is a priority for most tennis players. Various drills are proposed to enhance characteristics of the serve such as ball speed and spin, yet research has failed to address their efficacy. The aim of this study was therefore to compare the kinematics ...
Seo Young-Ho - - 2013
This paper discusses processing techniques for an adaptive digital holographic video service in various reconstruction environments, and proposes two new scalable coding schemes. The proposed schemes are constructed according to the hologram generation or acquisition schemes: hologram-based resolution-scalable coding (HRS) and light source-based signal-to-noise ratio scalable coding (LSS). HRS is ...
Lang Gregory T - - 2012
Helicopter pilots are exposed to noise at work and are at risk of developing hearing loss in excess of that which naturally results from aging. We investigated whether Lynx pilots demonstrated changes to hearing thresholds that differed from Apache pilots. Survey responses were combined with audiometric data from a retrospective ...
Daniels Alan - - 2012
Alan Daniels, business development director of emergency lighting specialist, P4, describes the latest trends in, and requirements for, emergency lighting, a vital part of the building services footprint in hospitals and other healthcare premises. He also explains how those responsible for the safe operation of emergency lighting system can ensure ...
Davila Myriam M Departament de Bioquímica i Biologia Molecular, Unitat de Bioquímica de Biociències, Edifici Cs, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Valle`s, - - 2012
High-resolution magic angle spinning (HRMAS) magnetic resonance spectroscopy provides detailed metabolomic information from intact tissue. However, long acquisition times and high rotation speed may lead to timedependent spectral pattern changes, which may affect proper interpretation of results. We report a strategy to minimize those changes, even at physiological recording temperature. ...
Wei Yuefan - - 2012
Bridged ZnO nanorod arrays on a V-grooved Si(100) substrate were used as the photoanode of a photoelectrochemical (PEC) cell for water splitting. Photolithography followed by reactive ion etching was employed to create a V-grooved structure on a Si substrate. ZnO nanorod arrays were grown via a hydrothermal method. The light ...
Lee Hee-Young - - 2012
Helical tubules are a fascinating and an intriguing class of self-assemblies. They occur frequently in biology and are believed to be intermediates in formation of gallstones. The pathway by which amphiphiles transform from an initial state of vesicles or micelles into such tubules has puzzled soft matter physicists, and it ...
Rivers Trevor J - - 2012
Luminescent signals can be used by animals for a number of purposes, including courtship and defense, sometimes by the same individual. However, the relative costs of producing these different behaviors are largely unknown. In the marine ostracod Photeros annecohenae, males utilize extracellular luminescence for complex courtship displays, and both males ...
Pauloehrl Thomas - - 2012
Making light work of ligation: A novel method utilizes light for oxime ligation chemistry. A quantitative, low-energy photodeprotection generates aldehyde which subsequently reacts with aminooxy moieties. The spatial control allows patterning on surfaces with a fluoro marker and GRGSGR peptide and can be imaged by time-of-flight secondary-ion mass spectrometry.
Nokubi T - - 2012
Despite the importance of masticatory performance in health promotion, assessment of masticatory performance has not been widely conducted to date because the methods are labour intensive. The purpose of this study is to investigate the accuracy of a novel system for automatically measuring masticatory performance that uses β-carotene-containing gummy jelly. ...
Bar-Anan Yoav - - 2012
Evaluative conditioning (EC) is a change in the evaluation of a stimulus after the stimulus co-occurred with affective stimuli. The present research examined whether EC of one stimulus depends also on the co-occurrence of another stimulus with positive or negative stimuli. We paired two target people with affective stimuli. We ...
Pagana G - - 2012
We apply time-frequency analysis to the endocavitarian signal of patients suffering from paroxysmal atrial fibrillation. The time-frequency spectrum reveals the components of the endocavitarian signal. These components are located in regions of the time-frequency domain that differ for in rhythm and in atrial fibrillation signals. By using experimental data, we ...
Clemans Zachary A - - 2012
Error processing studies in psychology and psychiatry are relatively common. Event-related potentials (ERPs) are often used as measures of error processing, two such response-locked ERPs being the error-related negativity (ERN) and the error-related positivity (Pe). The ERN and Pe occur following committed error in reaction time tasks as low frequency ...
Gall Megan D - - 2012
The sender-receiver matching hypothesis predicts that species-specific features of vocalizations will be reflected in species-specific auditory processing. This hypothesis has most often been invoked to explain correlations between vocal frequency ranges and the frequency range of auditory sensitivity; however it could apply to other structure features, such as the rise ...
Ladner Yoann - - 2012
A hexyl acrylate monolith was prepared via photopolymerization into a cyclic olefin copolymer micro-device for reversed-phase electrochromatography purposes. This work deals with the influence of the irradiation conditions (irradiation time and light intensity) used during synthesis on the electrochromatographic performances of the monolithic column obtained. Up to day, the monolith ...
Dishman J Donald - - 2012
The purpose of this research was to characterize unique neurophysiologic events following a high velocity, low amplitude (HVLA) spinal manipulation (SM) procedure. Descriptive time series analysis techniques of time plots, outlier detection and autocorrelation functions were applied to time series of tibial nerve H-reflexes that were evoked at 10-s intervals ...
Hu Meiqin - - 2012
Molecular iodine has been studied, for the first time, as a sensitizer for the degradation of 2,4,6-trichlorophenol (TCP) in aqueous solution under visible light ( ≥ 450 nm). TCP was degraded in the presence of commercial I2, but the reaction rate decreased significantly after 2 h. When a solution of ...
Lovell Ric - - 2012
OBJECTIVES: To re-examine the work-rate of soccer players immediately after a passive half-time interval with an alternative approach to data reduction and statistical contrasts. DESIGN: Time-motion analysis data (5Hz global positioning system), were collected from 20 elite youth players (age: 17±1 years) during 21 competitive league fixtures (5±3 matches per ...
Li Jun - - 2012
Experimental and numerical investigations are carried out on the nonlinear dynamics of the cerium-bromate-1,4-benzoquinone reaction, in which a unique kinetic feature is that the reduction of Ce(IV) is through bromide ions rather than by organic substrates. Nonlinear phenomena including both simple and sequential oscillations have been observed and the system ...
Scully Christopher G - - 2013
We compare the influence of time-frequency methods on analysis of time-varying renal autoregulation properties. Particularly, we examine if detection probabilities are similar for amplitude and frequency modulation for a modulated simulation signal among five time-frequency approaches, and if time-varying changes in system gain are detected using four approaches for estimating ...
Assmann Marc - - 2012
We present a simple technique for measuring coherence times for stationary light fields using a single detector with tunable time resolution. By measuring the equal-time second-order correlation function at varying instrument response functions it is possible to determine the coherence time and also the shape of the temporal decay without ...
Hu Xiaogang X Department of Kinesiology, The Pennsylvania State University, 266 Rec Bldg, University Park, PA 16802, USA. - - 2012
This study examined the influence of force-time gain on the visual-motor control of isometric force. The spatial lengths on the computer screen representing the unit of elapsed time (time gain) and force (force gain) of the force output were compressed or extended in a crossed fashion while subjects produced index ...
Michelet Pascal - - 2012
Stimulus-locked temporal codes are increasingly seen as relevant to perception. The timing of action potentials typically varies with stimulus intensity, and the invariance of temporal representations with intensity is therefore an issue. We examine the timing of action potentials in cat auditory nerve to broadband noise presented at different intensities, ...
Wang Rui - - 2012
This paper presents a new technique for real-time relighting of static scenes with all-frequency shadows from complex lighting and highly specular reflections from spatially-varying BRDFs. The key idea is to depict the boundaries of visible regions using piecewise linear functions, and convert the shading computation into double product integrals - ...
Meier Sebastian B - - 2012
Photoluminescence spectroscopy has been performed in situ during device operation and after switch-off on ionic transition metal complex (iTMC)-based sandwich-type light-emitting electrochemical cells (LECs). It is demonstrated that the photoluminescence of the LECs decreases with increasing operating time. For operating times up to three hours the decline in photoluminescence is ...
Oncel S - - 2012
This study focuses on a scale-up procedure considering two vital parameters light energy and mixing for microalgae cultivation, taking Chlamydomonas reinhardtii as the model microorganism. Applying two stage hydrogen production protocol to 1L flat type and 2.5L tank type photobioreactors hydrogen production was investigated with constant light energy and mixing ...
Michaels Jennifer E - - 2012
Most ultrasonic guided wave methods require tone burst excitations to achieve some degree of mode purity while maintaining temporal resolution. In addition, it is often desirable to acquire data using multiple frequencies, particularly during method development when the best frequency for a specific application is not known. However, this process ...
Furukawa Shigeto - - 2012
The binaural system is known to be sluggish, i.e., unable to track modulations in interaural parameters even at a relatively slow rate. The present study evaluated the binaural system's sensitivity to modulation phase rather than to modulation magnitude. The detectability of simultaneous modulations in interaural time and level differences with ...
Kratky Sascha - - 2012
ABSTRACT: It is well founded that ground contact time is the crucial part of sprinting because the available time window to apply force to the ground diminishes with growing running velocity. In view of this knowledge, the purpose of this study was to investigate the effects of body-weight support during ...
Konoike Naho - - 2012
We examined behavioral features of isochronous repetitive movements in two macaques. The monkeys were required to press a button repetitively in response to external cues. If the cue-intervals were constant (isochronous) and sub-second, the reaction time was shorter than in random-interval condition. In contrast, in the supra-second isochronous conditions, the ...
Lu Shao-Ping - - 2012
We present a video editing technique based on changing the time-lines of individual objects in video, which leaves them in their original places but at different times. This allows the production of object level slow motion effects, fast motion effects, or even time reversal. It can produce more interesting effects ...
Appenroth K-J - - 2012
The aquatic duckweed Spirodela polyrhiza propagates itself vegetatively by forming turions - bud-like perennation organs - in the autumn, which spend the winter on the bottom of ponds and then germinate in the following spring and proliferate on the water surface. Newly formed turions usually require a period of cold ...
Li Huihui - - 2012
Photocatalytic technologies were utilized to develop an environment-friendly system, which is capable of removing and oxidizing organic pollutants from an air stream. A series of long afterglow phosphors emitting long life-time fluorescence were adapted to prepared TiO2-based composite photocatalysts for the photodegradation of gas phase acetaldehyde. Although the photocatalytic reaction ...
Park Y - - 2012
Purpose: To develop an on-line quality assurance tool for RPM (real-time position management system, Varian Medical Systems, Palo Alto, CA) phase-based gated radiotherapy. Methods: A real-time motion verification system (RMVS) was developed to verify the positional reproducibility of patient breathing between CT simulation and treatment. Phase-resolved anterior body midlines were ...
Cheng Xin-Bing - - 2012
A new trigger program is proposed to realize the synchronization of high speed framing camera (HSFC) and intense electron-beam accelerator (IEBA). The trigger program which include light signal acquisition radiated from main switch of IEBA and signal processing circuit could provide a trigger signal with rise time of 17 ns ...
Grassi Massimo - - 2012
Looming visual stimuli (log-increasing in proximal size over time) and auditory stimuli (of increasing sound intensity over time) have been shown to be perceived as longer than receding visual and auditory stimuli (i.e., looming stimuli reversed in time). Here, we investigated whether such asymmetry in subjective duration also occurs for ...
Tong X - - 2012
Purpose: To analyze and report prostate intrafractional motion recorded online during external beam radiotherapy and to provide guidance for advanced prostate IMRT. Methods: Prostate intrafractional motion during IMRT and RapidARC treatments was tracked and recorded using a Calypso 4D-localization system. Data for 8600 treatment fractions of 230 prostate patients was ...
Qingxiao Shan - - 2012
The paper presents a digital compensator imposing real-time voltage to compensate the frequency offset of quartz resonator under acceleration. To begin with, a triple-axis MEMS acceleration sensor, whose package is less than 3 mm × 3 mm × 0.9 mm, is mounted at the bottom of quartz resonator. Then acceleration ...
Di Mascio Michele - - 2012
ABSTRACT: The aim of this study was to examine the most intense period of high-intensity running during elite soccer matches. Elite players (n=100) were analysed using a multi-camera computerised tracking system. High-intensity running distance (speed ≥19.8 km·h) and that covered in the most intense 5-min period were quantified during matches. ...
Davies Thomas W - - 2012
Artificial lighting has been used to illuminate the nocturnal environment for centuries and continues to expand with urbanization and economic development. Yet, the potential ecological impact of the resultant light pollution has only recently emerged as a major cause for concern. While investigations have demonstrated that artificial lighting can influence ...
Grobe Bianca - - 2012
The acoustic display of many cricket species consists of series of pulses grouped into chirps, and thus information is distributed over both short and long time scales. Here we investigated the temporal cues that females of the cricket Gryllus bimaculatus used to detect a chirp pattern on a longer time ...
Pennycook Timothy J - - 2012
Individual ultrasmall CdSe nanocrystals have recently been found to emit white light, but the ultimate origin of the phenomenon has remained elusive. Here we use a combination of state-of-the-art experiment and theory to show that excitation sets the ultrasmall nanocrystals into a fluxional state. Their energy gaps vary continuously on ...
Tanaka Keisuke - - 2012
PixD (Slr1694) is a blue light receptor that contains a BLUF (blue light sensors using a flavin chromophore) domain. A protein-to-protein interaction between PixD to a response regulator PixE (Slr1693) is essential to achieve light signal transduction for phototaxis of the species. Although the initial photochemical reaction of PixD, the ...
Dharani R - - 2012
To compare methods to measure time outdoor and light levels, two possible predictors of myopia, in Singapore children. Outdoor time from a diary and portable light meter over a 1-week period was compared in 117 Singapore children aged 6-12 years with and without myopia. All children wore a (HOBO Pendant ...
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