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Results 201 - 250 of 2246
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Andaluri Gangadhar - - 2011
The growing interest in sonochemistry as a tool for environmental remediation leads to the need for process optimization. Sonochemistry is a complex process, which depends on physical parameters and also on the process conditions. Physical parameters are interrelated and therefore a systematic approach has to be taken to optimize the ...
Gundy Chad M - - 2012
To investigate the statistical fit of alternative higher order models for summarizing the health-related quality of life profile generated by the EORTC QLQ-C30 questionnaire. A 50% random sample was drawn from a dataset of more than 9,000 pre-treatment QLQ-C30 v 3.0 questionnaires completed by cancer patients from 48 countries, differing ...
Purdy Sarah E - - 2011
We surveyed montane meadows in the northern Sierra Nevada and southern Cascades for two field seasons to compare commonly used aquatic and terrestrial-based assessments of meadow condition. We surveyed (1) fish, (2) reptiles, (3) amphibians, (4) aquatic macroinvertebrates, (5) stream geomorphology, (6) physical habitat, and (7) terrestrial vegetation in 79 ...
de Oliveira Marilia Mitidieri F - - 2011
Investigations surrounding the variability of productivity in upwelling regions are necessary for a better understanding the physical-biological coupling in these regions by monitoring systems of environmental impacts according to the needs of the regional coastal management. Using a spatial and temporal database from National Centers for Environmental Prediction (NCEP) and ...
Brown Harvey R - - 2011
From its first significant appearance in physics, the notion of probability has been linked in the minds of physicists with the notion of uncertainty. But the link may prove to be tenuous, if quantum mechanics, construed in terms of the Everett interpretation, is anything to go by.
Hugtenburg Richard P - - 2011
Physical models are increasingly used to predict acute and late effects resulting from radiation therapy. These models utilise measured and calculated microdosimetric quantities, and are increasingly used to determine the significant corrections for effective dose used in ion-beam therapy, neutron therapy and boron neutron-capture therapy. The relative biological effect (RBE) ...
Knauer Katja - - 2011
A mesocosm study with three photosystem-II inhibitors and an equipotent mixture was performed to address the value of functional and structural endpoints in evaluating the impact of herbicides on aquatic systems. The herbicides atrazine, diuron, and isoproturon were dosed in the ratio of their relative potencies as HC30 for the ...
Liu S - - 2011
This paper presents a sensor fusion method for assessing physical activity (PA) of human subjects, based on support vector machines (SVMs). Specifically, acceleration and ventilation measured by a wearable multi-sensor device on 50 test subjects performing 13 types of activities of varying intensities are analyzed, from which activity type and ...
Wiesenfeld Kurt - - 2011
We develop a generic iterative map model of coupled oscillators based on simple physical processes common to many such systems. The model allows us to understand, from a unified perspective, the range of different outcomes reported for experiments by Huygens and modern realizations of his two coupled clocks.
Smith Beth A - - 2011
Greater gait variability has been observed in persons with Down syndrome (DS). An understanding of baseline patterns of variability, how these patterns relate to adaptive control of gait, and whether increasing or decreasing variability is better is necessary for physical therapists to determine whether and when to intervene. Our aim ...
Monzani B - - 2011
BACKGROUND: Dysmorphic concern refers to an excessive preoccupation with a perceived or slight defect in physical appearance. It lies on a continuum of severity from no or minimal concerns to severe concerns over one's appearance. The present study examined the heritability of dysmorphic concerns in a large sample of twins.MethodTwins ...
Nelson Matthew John - - 2011
A question that still complicates interpretation of local field potentials (LFPs) is how electrode properties like impedance, size and shape affect recorded LFPs. Additionally, how any such effects should be considered when comparing LFP, electroencephalogram (EEG) or electrocorticogram (ECoG) data has not been clearly described. A generally accepted concrete physical ...
Schott T C - - 2011
OBJECTIVE: To determine how gap opening is affected by the activation intervals of expansion screws in removable orthodontic appliances and which gap widths are achievable during therapy. MATERIALS AND METHODS: In this retrospective study, the increases in gap widths for transverse and distalizing screws activated at 7- and 14-day intervals ...
Albano Giuseppina - - 2011
We consider a diffusion model based on a generalized Gompertz deterministic growth in which carrying capacity depends on the initial size of the population. The drift of the resulting process is then modified by introducing a time-dependent function, called "therapy", in order to model the effect of an exogenous factor. ...
Morgan Thomas John - - 2011
'Standard' or 'extracellular' base excess (SBE) is a modified calculation using one-third the normal hemoglobin concentration. It is a 'CO(2)-invariant' expression of meta- bolic acid-base status integrated across interstitial, plasma and erythrocytic compartments (IPE). SBE also integrates conflicting physical chemical influences on metabolic acid-base status. Until recently attempts to quantify ...
Frese Malte C - - 2011
PURPOSE: The physical and potential biological advantages of proton and carbon ions have not been fully exploited in radiation therapy for the treatment of cancer. In this work, an approach to predict proton and carbon ion relative biological effectiveness (RBE) in a representative spread-out Bragg peak (SOBP) is derived using ...
Jin Jing-Wen - - 2011
Spectral measurements of complex heterogeneous types of mixture samples are often affected by significant multiplicative effects resulting from light scattering, due to physical variations (e.g. particle size and shape, sample packing and sample surface, etc.) inherent within the individual samples. Therefore, the separation of the spectral contributions due to variations ...
Jiménez-Pavón David - - 2011
OBJECTIVE: To examine the association of physical activity and fitness with leptin concentrations in European adolescents, after taking into account several potential confounders including total body fat (TBF). STUDY DESIGN: We conducted a cross-sectional study in a school setting for the Healthy Lifestyle in Europe by Nutrition in Adolescence Cross-Sectional ...
Chatrchyan S - - 2011
A study of events with missing transverse energy and an energetic jet is performed using pp collision data at a center-of-mass energy of 7 TeV. The data were collected by the CMS detector at the LHC, and correspond to an integrated luminosity of 36  pb^{-1}. An excess of these events over standard ...
Li Jianing - - 2011
Accurate prediction of drug metabolism is crucial for drug design. Since a large majority of drugs metabolism involves P450 enzymes, we herein describe a computational approach, IDSite, to predict P450-mediated drug metabolism. To model induced-fit effects, IDSite samples the conformational space with flexible docking in Glide followed by two refinement ...
Gleeson Michael R - - 2011
An understanding of the photochemical and photo-physical processes, which occur during photopolymerization is of extreme importance when attempting to improve a photopolymer material's performance for a given application. Recent work carried out on the modelling of the mechanisms which occur in photopolymers during- and post-exposure, has led to the development ...
Mathew Merly - - 2011
Abstract Purpose . Investigate relations between demographic characteristics and submission method, Internet or paper, when physical activity behaviors are reported. Design . Observational. Setting . Metropolitan. Subjects . Adult women (N  =  918) observed weekly for 2 years (total number of weekly reports, 44,963). Measures . Independent variables included age, race, ...
Saint-Maurice Pedro F - - 2011
The System for Observing Play and Leisure Activities (SOPLAY) is a direct observation instrument designed to assess group physical activity and environmental contexts. The purpose of this study was to test the convergent validity of the SOPLAY using temporally matched data from an accelerometry-based activity monitor. Accelerometry-based physical activity data ...
Zilcha-Mano Sigal - - 2011
John Bowlby's ( 1973 , 1980 , 1982 ) attachment theory is one of the most influential theories in personality and developmental psychology and provides insights into adjustment and psychopathology across the lifespan. The theory is also helpful in defining the target of change in psychotherapy, understanding the processes by ...
Krenn Patricia J PJ Institute of Sport Science, University of Graz, Austria. - - 2011
The GPS represents an innovative way to objectively assess the spatial locations of physical activity behavior. The aim of this systematic review was to determine the capability of GPS to collect high-quality data on the location of activities in research on the relationship between physical activity and the environment. Published ...
Weng Lindong - - 2011
Thermodynamic and kinetic models can provide a wealth of information on the physical response of living cells and tissues experiencing cryopreservation procedures. Both isothermal and nonisothermal models have been proposed so far, accompanied by experimental verification and cryo-applications. But the cryoprotective solution is usually assumed to be dilute and ideal ...
Aaltonen T - - 2011
We present a search for new physics in events with two high p_{T} leptons of the same electric charge, using data with an integrated luminosity of 6.1  fb^{-1}. The observed data are consistent with standard model predictions. We set 95% C.L. lower limits on the mass of doubly charged scalars decaying ...
Yamanaka Tsuyuko - - 2011
1. The nature of abundance-body size relationships in animal communities, and especially the drivers behind the observed patterns, have been a focus of persistent debate in animal ecology. In a recent review, Allen et al. (2006) categorized five mechanistic explanations behind the commonly observed polymodality in these relationships: energetic constraints; phylogenetic constraints; ...
Zhang Shaoyan - - 2011
INTRODUCTION:: Most accelerometer-based activity monitors are worn on the waist or lower back for assessment of habitual physical activity. Output is in arbitrary counts that can be classified by activity intensity according to published thresholds. The purpose of this study was to develop methods to classify physical activities into walking, ...
Bader Rolf - - 2011
A real-time physical model of the Banjo as proposed by Pfeifle and Bader [J. Acoust. Soci. Am. (2009)] is extended with nonlinear effects on the membrane resulting from the added force of the bridge and the thereby arising anisotropic tension distribution on the membrane. It is shown that this effect ...
Woolfe Katherine F - - 2011
Development of computational models to predict underwater noise from impact pile driving is limited because of the difficulty and cost involved in collecting acoustic field data for model verification during construction activities. To alleviate this situation, a scaled physical model for marine pile driving was designed and implemented in a ...
Vermot Julien - - 2011
In April 2011, researchers from diverse background met at the Gulbenkian Institute (Oeiras, Portugal) to discuss the emerging input of biophysics into the field of developmental biology. The scope of the workshop was to bring together scientists working in different model systems and to discuss some of the most recent ...
Fackler Cameron - - 2011
Bayesian inference is applied to the problem of determining the physical parameters of a rigid-frame porous material. Such materials may be characterized by the parameters of flow resistivity, porosity, and tortuosity. The Biot-Allard and Attenborough models predict the propagation of sound in rigid-frame porous materials by modeling the characteristic impedance ...
Chotiros Nicholas P - - 2011
The development of geo-physical descriptions of the sediment and models to predict the acoustic properties are critical to the application of sediment acoustics. The former follow standard geo-physical methods of sediment classification, based on grain size, density, and other physical descriptors. The latter started as a fluid approximation, followed by ...
Villeneuve Jéro Me - - 2011
Sound synthesis with mass-interaction physical modeling networks is known as a general paradigm capable of being the central part of complete software environments for both sound synthesis and musical creation. GENESIS 3, resting on the CORDIS-ANIMA formalism and developed by ACROE/ICA Laboratory, is the first environment of this kind. Using ...
Perng Chao-Yu J - - 2011
The harpsichord is a plucked string keyboard instrument with a distinct sound, and previous work has been done to synthesize it [V. Valimaki et al., EURASIP J. Appl. Signal. 7, 934-948 (2004)]. However, these excitation signals are extracted through recorded tones and are not physical models in the true sense. ...
Siebein Gary W - - 2011
One important goal of soundscape studies is to develop methods that architects, urban designers, planners, landscape architects, and others involved with the design of the indoor and outdoor physical environment can be implement as part of their work. As such the role of design is an inherent aspect of soundscape ...
Chafe Chris - - 2011
Two recent compositions have capitalized on the great expressive range of a custom-designed music synthesis algorithm. The "Animal" plays a part in Tomato Quintet (a music installation) and Phasor (a contrabass and computer piece). The algorithm is played with live controls, respectively, updates from CO(2) sensors and signals from a ...
Wang Guoqing - - 2011
By determination of the number of absorptive chemical components (ACCs) in mixtures using median absolute deviation (MAD) analysis and extraction of spectral profiles of ACCs using kernel independent component analysis (KICA), an adaptive KICA (AKICA) algorithm was proposed. The proposed AKICA algorithm was used to characterize the procedure for processing ...
Koehl M A R - - 2011
Aerodynamic studies using physical models of fossil organisms can provide quantitative information about how performance of defined activities, such as gliding, depends on specific morphological features. Such analyses allow us to rule out hypotheses about the function of extinct organisms that are not physically plausible and to determine if and ...
McHenry Lindsay J - - 2011
Olduvai Gorge, Tanzania has rich records of Plio-Pleistocene fauna and flora, hominin fossils, and stone artifacts preserved between well-dated tephra layers (tuffs). Accurate correlation between sites in the two million year section is complicated by faulting, erosion, change in physical appearance of the tuffs, and quality of preservation. Traditional tuff ...
Lorber Michael F - - 2011
Individual and dyadic stability models of newlyweds' physical aggression were evaluated in a sample of 394 newlywed community couples recruited at engagement and followed for 2.5 years. Aggression in young couples was hypothesized to be a stable, enduring trait, consistent with a latent state-trait conceptualization. However, the findings indicated that ...
Dioguardi Nicola - - 2011
This note illustrates a novel method to measure the dynamics of pathological states using primary biliary cirrhosis as a prototype disease manifesting a dynamic course. The basis of the new method is the evaluation of liver sections using quantitative metrical concepts able to provide scalars useful for statistical purposes while ...
Miciak Maxi - - 2011
Scand J Caring Sci; 2011 A review of the psychotherapeutic 'common factors' model and its application in physical therapy: the need to consider general effects in physical therapy practice This article explores the common factors model of psychotherapeutic intervention and discusses its relevance for physical therapy practice. The model provides ...
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 ...
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