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Olsson Simon - - 2011
Conventional methods for protein structure determination from NMR data rely on the ad hoc combination of physical forcefields and experimental data, along with heuristic determination of free parameters such as weight of experimental data relative to a physical forcefield. Recently, a theoretically rigorous approach was developed which treats structure determination ...
Hill Theodore P - - 2011
This paper describes a new mathematical method called conflation for consolidating data from independent experiments that measure the same physical quantity. Conflation is easy to calculate and visualize and minimizes the maximum loss in Shannon information in consolidating several independent distributions into a single distribution. A formal mathematical treatment of ...
Palisano Robert J - - 2011
Palisano RJ, Orlin M, Chiarello LA, Oeffinger D, Polansky M, Maggs J, Gorton G, Bagley A, Tylkowski C, Vogel L, Abel M, Stevenson R. Determinants of intensity of participation in leisure and recreational activities by youth with cerebral palsy. To test a model of determinants of intensity of participation in ...
Ekelund Ulf U MRC Epidemiology Unit, Institute of Metabolic Science, Addenbrookes Hospital, Box 285, Cambridge CB2 0QQ, UK. - - 2011
The aim of this review is to summarise issues surrounding the measurement of physical activity (PA) by self-report and accelerometry in youth (2-18 years old). Current levels and temporal trends in PA and sport participation and the effect of assessment method on data interpretation will be summarised. Relevant papers were ...
Yousif Abubaker Ali - - 2011
Inactivation constant for V79 cells has been extracted from radiobiology experiments that utilize charged particles to irradiate mammal cells in vitro. Physical parameters such as effective charge, radiation mean free path and linear ionization which characterized protons and heluim-4 particles are determined using of standard values. The relationship between inactivation ...
Gabriel Thomas - - 2011
At least two rate-limiting mechanisms in vesicle trafficking operate at mouse Schaffer collateral synapses, but their molecular/physical identities are unknown. The first mechanism determines the baseline rate at which reserve vesicles are supplied to a readily releasable pool. The second causes the supply rate to depress threefold when synaptic transmission ...
Yoo Cheol Seung - - 2011
Determining the exact duration of seizure is an important factor for predicting the efficacy of electroconvulsive therapy (ECT). In most cases, seizure duration is estimated manually by observing the electroencephalogram (EEG) waveform. In this article, we propose a method based on sample entropy (SampEn) that automatically detects the termination time ...
John D D Department of Kinesiology, University of Massachusetts, 30 Eastman Lane, Amherst, MA 01003, - - 2011
Advancing the field of physical activity (PA) monitoring requires the development of innovative multi-sensor measurement systems that are feasible in the free-living environment. The use of novel analytical techniques to combine and process these multiple sensor signals is equally important. This paper describes a novel multi-sensor 'integrated PA measurement system' ...
Babu K S - - 2011
We show that the scalar sector needed for fermion mass generation when the flavor symmetry of the standard model is maximally gauged can consistently explain two anomalies reported recently by the CDF Collaboration-the forward-backward asymmetry in tt[over ¯] pair production and the dijet invariant mass in the Wjj channel. A ...
Stoelinga Christophe N J - - 2011
Impact sounds synthesized according to a physical model have increasingly become the stimulus of choice in studies of sound source perception. Few studies, however, have incorporated manner of contact in their models because of the complexity of the mechanics involved. Here a simplified model of contact is described suitable for ...
Dollinger M - - 2011
Voice quality is strongly dependent on vocal fold dynamics, which in turn are dependent on lung pressure and vocal fold biomechanics. Numerical and physical models are often used to investigate the interactions of these different subsystems. However, the utility of numerical and physical models is limited unless appropriately validated with ...
Ning Hanwen - - 2011
The identification of nonlinear spatiotemporal systems is of significance to engineering practice, since it can always provide useful insight into the underlying nonlinear mechanism and physical characteristics under study. In this paper, nonlinear spatiotemporal system models are transformed into a class of multi-input-multi-output (MIMO) partially linear systems (PLSs), and an ...
Chiu Chung-Yi - - 2011
Objective: To evaluate the Health Action Process Approach (HAPA) as a motivational model for physical activity self-management for people with multiple sclerosis (MS). Design: Quantitative descriptive research design using path analysis. Participants: One hundred ninety-five individuals with MS were recruited from the National Multiple Sclerosis Society and a neurology clinic ...
Newman Timothy - - 2011
The development of an adult organism from a fertilized egg remains one of the deep mysteries of biology. Great strides have been made in the past three decades, primarily through ever more sophisticated genetic analyses and the advent of live-cell imaging, yet the underlying principles governing development are elusive. Recently, ...
Maceri Franco - - 2011
This paper aims to highlight the need for a refined tendon model to reproduce the main mechanical features of the integrated muscle-tendon unit (MTU). Elastic nonlinearities of the tendon, both at the nano and microscale, are modeled by a multiscale approach, accounting for the hierarchical arrangement (from molecules up to ...
Chan Lap Ki - - 2011
Although high-fidelity digital models of human anatomy based on actual cross-sectional images of the human body have been developed, reports on the use of physical models in anatomy teaching continue to appear. This article aims to examine the common features shared by these physical models and analyze their educational value ...
Carstensen Tommy T School of Biomolecular and Biomedical Science, Centre for Synthesis and Chemical Biology, UCD Conway Institute, University College Dublin, Belfield, Dublin 4, - - 2011
Protein pK(a) calculation methods are developed partly to provide fast non-experimental estimates of the ionization constants of protein side chains. However, the most significant reason for developing such methods is that a good pK(a) calculation method is presumed to provide an accurate physical model of protein electrostatics, which can be ...
Dindoyal Irving - - 2011
To segment the fetal heart in order to facilitate the 3D assessment of the cardiac function and structure. Ultrasound acquisition typically results in drop-out artifacts of the chamber walls. The authors outline a level set deformable model to automatically delineate the small fetal cardiac chambers. The level set is penalized ...
Wallmann Birgit - - 2011
BACKGROUND: There is a growing body of international data on the association between physical activity (PA) and variables of the perceived environment. German data is still lacking. The purpose of this study was to provide data on PA (moderate-to-vigorous PA (MVPA) vs. walking) and the perceived environment in urban and ...
Dumarey Melanie - - 2011
Roll compaction is gaining importance in pharmaceutical industry for the dry granulation of heat or moisture sensitive powder blends with poor flowing properties prior to tabletting. We studied the influence of microcrystalline cellulose (MCC) properties on the roll compaction process and the consecutive steps in tablet manufacturing. Four dissimilar MCC ...
Lee Andy H - - 2011
PURPOSE: The health benefits of physical activity (PA) are well established. PA outcomes, being semicontinuous in nature, often exhibit a large portion of zero values together with continuous positive values that are right-skewed. We propose a novel two-part mixture regression model with random effects to characterize heterogeneity of the clustered ...
Lubans D R - - 2011
The aim of this paper was to describe and test a social cognitive model of physical activity tailored for adolescent girls. Participants were 1518 girls (aged 13.6 ± 0.02 years) from 24 secondary schools in New South Wales, Australia. Useable accelerometer (≥10 hours day(-1) on at least 3 days) and ...
Vathsangam Harshvardhan H Department of Computer Science, University of Southern California, Los Angeles, CA90089, USA. - - 2011
We describe an experimental study to estimate energy expenditure during treadmill walking using a single hip-mounted inertial sensor (triaxial accelerometer and triaxial gyroscope). Typical physical-activity characterization using commercial monitors use proprietary counts that do not have a physically interpretable meaning. This paper emphasizes the role of probabilistic techniques in conjunction ...
Ainsworth Barbara E - - 2011
PURPOSE:: The Compendium of Physical Activities was developed to enhance the comparability of results across studies using self-report physical activity (PA) and is used to quantify the energy cost of a wide variety of PAs. We provide the second update of the Compendium, referred to as the 2011 Compendium. METHODS:: ...
Thomas Shaun A - - 2011
We observe a large excess of power in the statistical clustering of luminous red galaxies in the photometric SDSS galaxy sample called MegaZ DR7. This is seen over the lowest multipoles in the angular power spectra C_{ℓ} in four equally spaced redshift bins between 0.45≤z≤0.65. However, it is most prominent in ...
McKelvie James - - 2011
To characterize the influence of tilt angle, decentration, and pupil size on the higher-order aberration (HOA) profile of 3 aspheric intraocular lenses (IOLs) using a physical model eye. A 4-factor (model, pupil, angle, decentration) in vitro experimental design comparing 3 aspheric IOLs using a physical model eye. Measurements of HOA ...
Sun Kai - - 2011
We report the theoretical discovery of a class of 2D tight-binding models containing nearly flatbands with nonzero Chern numbers. In contrast with previous studies, where nonlocal hoppings are usually required, the Hamiltonians of our models only require short-range hopping and have the potential to be realized in cold atomic gases. ...
Kendal Wayne S - - 2011
A power function relationship observed between the variance and the mean of many types of biological and physical systems has generated much debate as to its origins. This Taylor's law (or fluctuation scaling) has been recently hypothesized to result from the second law of thermodynamics and the behavior of the ...
Dijker Anton J M - - 2011
The evolution of psychological adaptations for cooperation is still puzzling due to a tendency to frame social interaction in mathematical and game-theoretical terms, without systematically examining its causal structure and underlying mechanisms. Complementarily, empirical approaches to cooperation tend to focus on isolated components of mechanisms without sufficiently indicating how different ...
Choudhury Deepak - - 2011
There are a plethora of approaches to construct microtissues as building blocks for the repair and regeneration of larger and complex tissues. Here we focus on various physical and chemical trapping methods for engineering three-dimensional microtissue constructs in microfluidic systems that recapitulate the in vivo tissue microstructures and functions. Advances ...
Esses Steven J - - 2011
In this article, we describe the production of physical models from CT data using rapid prototyping and present their clinical application. MDCT data acquisition of isotropic voxels and modern postprocessing techniques provide exquisite detail for clinicians and radiologists. In recent years, rapid prototyping technologies have provided new possibilities to visualize ...
Liebovitch Larry S - - 2011
The success of psychotherapy depends on the nature of the therapeutic relationship between a therapist and a client. We use dynamical systems theory to model the dynamics of the emotional interaction between a therapist and client. We determine how the therapeutic endpoint and the dynamics of getting there depend on ...
Gingrich Simone - - 2011
The concept of socio-ecological transitions is used to analyse the quantitative importance of physical imports and exports for the Habsburg Empire and the United Kingdom in the 19th and early 20th centuries. For the Habsburg Empire, a new dataset of foreign trade and social metabolism is presented. For the United ...
de Vladar Harold P HP I.S.T. Austria, A-3400 Klosterneuburg, Austria. - - 2011
Evolutionary biology shares many concepts with statistical physics: both deal with populations, whether of molecules or organisms, and both seek to simplify evolution in very many dimensions. Often, methodologies have undergone parallel and independent development, as with stochastic methods in population genetics. Here, we discuss aspects of population genetics that ...
Silva Pedro - - 2011
BACKGROUND: If the Youth Physical Activity Promotion (YPAP) model adequately explains youth PA, in two different cultures and with two different sets of instruments, it would suggest that the model has broad utility for youth activity promotion. METHODS: Two samples from different countries were used: sample 1 - USA, 159 ...
Machlin Steven R - - 2011
Background Comprehensive information on determinants and patterns of use and spending for ambulatory physical therapy services is needed to inform health planning and policy decisions. Most research in the literature on this topic is limited to specific payers, age groups, and conditions. Objective The purpose of this study was to ...
Emken B Adar BA Institute for Health Promotion and Disease Prevention Research, University of Southern California, Alhambra, CA, - - 2012
KNOWME Networks is a wireless body area network with 2 triaxial accelerometers, a heart rate monitor, and mobile phone that acts as the data collection hub. One function of KNOWME Networks is to detect physical activity (PA) in overweight Hispanic youth. The purpose of this study was to evaluate the ...
Tudor-Locke Catrine - - 2011
The Current Population Survey (CPS) and the American Time Use Survey (ATUS) use the 2002 census occupation system to classify workers into 509 separate occupations arranged into 22 major occupational categories. We describe the methods and rationale for assigning detailed Metabolic Equivalent (MET) estimates to occupations and present population estimates ...
Santoro Stefano - - 2011
ABSTRACT Aim: Ha based dermal fillers in recent years aroused big interest in the area of cosmetic surgery for the rejuvenation of the dermis. There is not a ideal dermal filler (DF) for all applications and in commerce there are many types of DF that differ for their chemical-physical properties. ...
Wyss Thomas - - 2011
The purpose of this study was to develop and validate an algorithm for estimating energy expenditure during the daily military routine on the basis of data collected using body-fixed sensors. First, 8 volunteers completed isolated physical activities according to an established protocol, and the resulting data were used to develop ...
Mazières Stéphane - - 2011
The last two decades have seen numerous debates in the field of the initial settlement of America and noteworthy was the disagreement between physical and molecular anthropologists. Recently, it has been pointed out that this discordance could partly originate from the description methods and classification labels used in craniometry, which ...
Patel B A - - 2011
Electroanalytical techniques over the past few years have been applied to study real-time release of various signaling molecules in the GI tract. These approaches have become highly attractive as they provide dynamic spatial information on the amount of signaling molecules released. Although these approaches are relatively new to the field, ...
Polsgrove Myles Jay - - 2012
The typical model used by movement professionals to enhance performance relies on the notion that a linear increase in load results in steady and progressive gains, whereby, the greater the effort, the greater the gains in performance. Traditional approaches to movement progression typically rely on the proper sequencing of extrinsically ...
Giesbrecht Ed M - - 2011
Occupational therapists strive to engage individuals in occupation and enhance community access through wheelchair prescription. Previous research with pushrim-activated, power-assisted wheelchairs identifies a reduction in the physical demands of manual wheelchair propulsion but limited evidence exists regarding user evaluation in context. This study explored the experience of using a power-assisted ...
Cogne Guillaume - - 2011
A constraint-based modeling approach was developed to investigate the metabolic response of the eukaryotic microalgae Chlamydomonas reinhardtii under photoautotrophic conditions. The model explicitly includes thermodynamic and energetic constraints on the functioning metabolism. A mixed integer linear programming method was used to determine the optimal flux distributions with regard to this ...
Winman Thomas T University West, Trollhättan, Sweden - - 2011
The implementation of generic models for organizing information in complex institutions like those in healthcare creates a gap between standardization and the need for locally relevant knowledge. The present study addresses how this gap can be bridged by focusing on the practical work of healthcare staff in transforming information in ...
Chelgren Nathan D - - 2011
Studies of the distribution of elusive forest wildlife have suffered from the confounding of true presence with the uncertainty of detection. Occupancy modeling, which incorporates probabilities of species detection conditional on presence, is an emerging approach for reducing observation bias. However, the current likelihood modeling framework is restrictive for handling ...
Rehorek S J - - 2011
Rabbits have been proposed as a model organism for the human lacrimal apparatus (LA), including the nasolacrimal duct (NLD), based principally on comparative studies of adult morphology; however, little is known about its development. The NLD first appears as an incomplete primordium in the subcutaneous region of the primordial eyelid ...
Castillo-Retamal Marcelo - - 2011
Objective: To identify methods used to assess physical activity and sedentary behaviour at the workplace and review the validity and reliability of these measures. Methods: Databases were searched for relevant published articles including MEDLINE, SPORT Discus, ProQuest and Google Scholar. Keywords used were physical-activity, workplace, sedentary-behaviour, measurement and questionnaire. Studies ...
Lacy Fred - - 2011
Experimental evidence has made it clear that the size of an object can have an effect on its properties. The electrical resistivity of a thin film will become larger as the thickness of that film decreases in size. Furthermore, the electrical resistivity will also increase as the temperature increases. To ...
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