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Results 251 - 300 of 6559
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Baba Yuki G YG Biodiversity Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba-shi, Ibaraki, 305-8604, Japan, - - 2014
Cyrtarachne is an orb-weaving spider belonging to the subfamily Cyrtarachninae (Araneidae) which includes triangular-web-building Pasilobus and bolas spiders. The Cyrtarachninae is a group of spiders specialized in catching moths, which is thought to have evolved from ordinary orb-weaving araneids. Although the web-building time of nocturnal spiders is in general related ...
Stajic J M JM Faculty of Science, University of Kragujevac, Kragujevac, - - 2014
Measuring of radon and thoron progeny concentrations in air, based on air filtration, was analysed in order to assess the reliability of the method. Changes of radon and thoron progeny activities on the filter during and after air sampling were investigated. Simulation experiments were performed involving realistic measuring parameters. The ...
JiefengJiang Center for Cognitive Neuroscience, Duke University; Department of Psychology & Neuroscience, Duke - - 2014
"Cognitive control" describes endogenous guidance of behavior in situations where routine stimulus-response associations are suboptimal for achieving a desired goal. The computational and neural mechanisms underlying this capacity remain poorly understood. We examine recent advances stemming from the application of a Bayesian learner perspective that provides optimal prediction for control ...
Baygi Mahdi Oloumi MO Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. Electronic address: - - 2014
Applying the min-projection strategy (MPS) to a three-phase grid-connected inverter to improve its transient performance is the main objective of this paper. For this purpose, the inverter is first modeled as a switched linear system. Then, the feasibility of the MPS technique is investigated and the stability criterion is derived. ...
Hevelke Alexander A Lehrstuhl für Philosophie IV, Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, 80539, Munich, Germany, - - 2014
A number of companies including Google and BMW are currently working on the development of autonomous cars. But if fully autonomous cars are going to drive on our roads, it must be decided who is to be held responsible in case of accidents. This involves not only legal questions, but ...
Crager Michael R MR a Department of Biostatistics , Genomic Health, Inc. , 301 Penobscot Dr., Redwood City , CA , - - 2014
Efron (2008) showed that biological features in a high dimensional study can be divided into classes and a separate false discovery rate (FDR) analysis conducted in each class using information from the entire set of features to assess the FDR within each class. We apply this separate class approach to ...
Ciambella J J Advanced Composites Centre for Innovation and Science, University of Bristol, University Walk, BS8 1TR, Bristol, United Kingdom; Dipartimento di Ingegneria Strutturale e Geotecnica, Sapienza Università di Roma, Via Eudossiana 18, 00184 Rome, Italy. Electronic address: - - 2014
We report about the experimental identification of viscoelastic constitutive models for frequencies ranging within 0-10Hz. Dynamic moduli data are fitted forseveral materials of interest to medical applications: liver tissue (Chatelin et al., 2011), bioadhesive gel (Andrews et al., 2005), spleen tissue (Nicolle et al., 2012) and synthetic elastomer (Osanaiye, 1996). ...
Mekler Alexey A The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, 61, Moika, 191186, Saint-Petersburg, Russia. Electronic address: - - 2014
One of the important aspects of the data classification problem lies in making the most appropriate selection of features. The set of variables should be small and, at the same time, should provide reliable discrimination of the classes. The method for the discriminating power evaluation that enables a comparison between ...
Asberg Arne A Department of Clinical Chemistry, Trondheim University Hospital , Trondheim , - - 2014
Background. If a laboratory has two analytical instruments for measuring the concentration of the same analyte and samples from the patients are randomly allocated to either of the two, then an allowable systematic difference between the two instruments should be defined. We present a solution to this problem, based on ...
Feki-Sahnoun Wafa W Faculté des Sciences de Sfax, Université de Sfax, Route soukra Km 3,5, BP 802, CP 3018, Sfax, - - 2014
Microphytoplankton data along the southern Tunisian coasts have been monitored weekly since 1995. This study used the data collected during the period 2000-2007 to determine the temporal variability patterns and to characterize the geographical structures of microphytoplankton populations. The methodological approach consisted in isolating the temporal variability common to all ...
Howard Robert W RW University of New South Wales, Australia. Electronic address: - - 2014
The power law of practice holds that a power function best interrelates skill performance and amount of practice. However, the law's validity and generality are moot. Some researchers argue that it is an artifact of averaging individual exponential curves while others question whether the law generalizes to complex skills and ...
O'Rourke Holly P HP Department of Psychology, Arizona State University, P.O. Box 871104, 950 S. McAllister Ave. Room 237, Tempe, AZ, 85287-1104, USA, - - 2014
Although previous research has studied power in mediation models, the extent to which the inclusion of a mediator will increase power has not been investigated. To address this deficit, in a first study we compared the analytical power values of the mediated effect and the total effect in a single-mediator ...
Reimers Stian S Department of Psychology, City University London, Northampton Square, London, EC1V 0HB, UK, - - 2014
Web-based research is becoming ubiquitous in the behavioral sciences, facilitated by convenient, readily available participant pools and relatively straightforward ways of running experiments: most recently, through the development of the HTML5 standard. Although in most studies participants give untimed responses, there is a growing interest in being able to record ...
Yan Yan - - 2014
We propose an efficient approach to semidefinite spectral clustering (SSC), which addresses the Frobenius normalization with the positive semidefinite (p.s.d.) constraint for spectral clustering. Compared with the original Frobenius norm approximation based algorithm, the proposed algorithm can more accurately find the closest doubly stochastic approximation to the affinity matrix by ...
Chandrasekar A A Department of Mathematics, Bharathiar University, Coimbatore - 641 046, Tamilnadu, India. Electronic address: - - 2014
We extend the notion of Synchronization of memristor-based recurrent neural networks with two delay components based on second-order reciprocally convex approach. Some sufficient conditions are obtained to guarantee the synchronization of the memristor-based recurrent neural networks via delay-dependent output feedback controller in terms of linear matrix inequalities (LMIs). The activation ...
Khamassi Mehdi M Stem Cell and Brain Research Institute, INSERM U846, 69500 Bron, France Université de Lyon, Lyon 1, UMR-S 846, 69003 Lyon, France Institut des Systèmes Intelligents et de Robotique, Université Pierre et Marie Curie-Paris 6, F-75252, Paris Cedex 05, France Centre National de la Recherche Scientifique UMR 7222, F-75005, Paris Cedex 05, - - 2014
To explain the high level of flexibility in primate decision-making, theoretical models often invoke reinforcement-based mechanisms, performance monitoring functions, and core neural features within frontal cortical regions. However, the underlying biological mechanisms remain unknown. In recent models, part of the regulation of behavioral control is based on meta-learning principles, for ...
Bastiaansen J A JA Interdisciplinary Center Psychopathology and Emotion regulation, Department of Psychiatry, University Medical Center Groningen, CC72, PO Box 30.001, 9700 RB Groningen, The Netherlands. Electronic address: - - 2014
Increased intra-subject reaction time variability (RT-ISV) as coarsely measured by the standard deviation (RT-SD) has been associated with many forms of psychopathology. Low-frequency RT fluctuations, which have been associated with intrinsic brain rhythms occurring approximately every 15-40s, have been shown to add unique information for ADHD. In this study, we ...
Garcia-Jacas Cesar R - - 2014
The present manuscript introduces, for the first time, a novel 3D-QSAR alignment free method (QuBiLS-MIDAS) based on tensor concepts through the use of the three-linear and four-linear algebraic forms as specific cases of n-linear maps. To this end, the kth three-tuple and four-tuple spatial-(dis)similarity matrices are defined, as tensors of ...
de Julian-Ortiz J Vicente JV Molecular Connectivity and Drug Design Research Unit, Department of Physical Chemistry, Faculty of Pharmacy, University of Valencia, Av. V. Andrés Estellés 0, 46100 Burjassot, Valencia, Spain. - - 2014
Human Intestinal Absorption (HIA) has been modeled many times by using classification models. However, regression models are scarce. Here, Artificial Neural Networks (ANNs) are implemented for this purpose. A dataset of structurally diverse chemicals with their respective experimental HIA were used to design robust, true predictive and widespread applicable ANN ...
Stollmeier Frank F Network Dynamics Group, Max Planck Institute for Dynamics and Self-Organization (MPI DS) Göttingen, Am Fassberg 17, 37077 Göttingen, Germany and Max Planck Institute for Dynamics and Self-Organization (MPI DS) Göttingen, and Institute for Nonlinear Dynamics, Faculty of Physics, University of Göttingen, Am Fassberg 17, 37077 Göttingen, - - 2014
The magnitude and variability of Earth's biodiversity have puzzled scientists ever since paleontologic fossil databases became available. We identify and study a model of interdependent species where both endogenous and exogenous impacts determine the nonstationary extinction dynamics. The framework provides an explanation for the qualitative difference of marine and continental ...
Flöttmann Max M Theoretical Biophysics, Humboldt-Universität zu Berlin, Invalidenstr. 42, 10115 Berlin, Germany max.floettmann@biologie.hu-berlin.de - - 2014
SensA is a web-based application for sensitivity analysis of mathematical models. The sensitivity analysis is based on metabolic control analysis, computing the local, global and time-dependent properties of model components. Interactive visualisation facilitates interpretation of usually complex results. SensA can contribute to the analysis, adjustment and understanding of mathematical models ...
Ly Sidy S Laboratory of Geometry and Application (LGA), Université Cheikh-Anta-Diop, Dakar, Senegal, - - 2014
We present a mathematical model of a fishery on several sites with a variable price. The model takes into account the evolution during the time of the resource, fish and boat movement between the different sites, fishing effort and price that varies with respect to supply and demand. We suppose ...
Tripette Julien J Department of Health Promotion and Exercise, National Institute of Health and Nutrition, Tokyo, - - 2014
Several active video game (AVG) intervention studies failed in showing an increase in physical activity by using accelerometry measurements. To test the validity of accelerometry for monitoring AVG playing intensity. Twenty-two adults performed 80 activities included in the Wii Sports and Wii Fit Plus series. The energy expenditure (EE) and ...
Russo Mariateresa M Department of Agriculture, Laboratory of Food Chemistry, University of Reggio Calabria, Feo di Vito, 89100 Reggio Calabria, Italy; Fondazione Mediterranea Terina, Research Laboratory "Quality and Food Safety and New Technologies" - Qua.Sic.A.Tec. MIUR Acc n. 28/2010, Area Industriale, 88046 Lamezia Terme (CZ), Italy. Electronic address: - - 2014
Licorice roots cultivated commercially in distinct geographical areas such as China, Iran, Italy (Abruzzo, Basilicata, Calabria and Sicily) and Turkey were classified using an artificial olfactive system (e-nose) based on metal oxide semiconductor sensors (MOS). The resultant instrumental data were processed using a multivariate statistical analysis method in order to ...
Ferreira Diogo Cunha DC Instituto Superior Técnico (IST), University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal, - - 2014
Hospital efficiency analysis depends largely on the model specifications. This study discusses the importance of the case-mix index (CMI) to homogenize the sample of inpatient discharges. It proposes a new index where they are classified by service, since it is usual to have lack of data to compute the CMI ...
Batka Richard J RJ Department of Anatomy & Cell Biology, Indiana University School of Medicine, 635 Barnhill Drive, MS 5025 C, Indianapolis, Indiana; R & D Services Richard L. Roudebush VA Medical Center, 1481 W. 10th Street, Mail Code 151, Rm C-3074, Indianapolis, - - 2014
Locomotion analysis is now widely used across many animal species to understand the motor defects in disease, functional recovery following neural injury, and the effectiveness of various treatments. More recently, rodent locomotion analysis has become an increasingly popular method in a diverse range of research. Speed is an inseparable aspect ...
Fabris Chiara C 1 Department of Information Engineering, University of Padova , Padova, Italy - - 2014
Abstract Background: Several clinical studies have shown that low blood glucose (BG) levels affect electroencephalogram (EEG) rhythms through the quantification of traditional indicators based on linear spectral analysis. Nonlinear measures used in the last decades to characterize the EEG in several physiopathological conditions have never been assessed in hypoglycemia. The ...
Cheung Felix F Department of Psychology, Michigan State University, East Lansing, MI, 48823, USA, - - 2014
The present paper assessed the validity of single-item life satisfaction measures by comparing single-item measures to the Satisfaction with Life Scale (SWLS)-a more psychometrically established measure. Two large samples from Washington (N = 13,064) and Oregon (N = 2,277) recruited by the Behavioral Risk Factor Surveillance System and a representative German sample (N = 1,312) recruited ...
Xie Xiangjun X School of Sciences, Southwest Petroleum University, Chengdu, Sichuan 610500, China. Electronic address: - - 2014
In this paper, the problem of delay-dependent asymptotic stability analysis for neural networks with time-varying delays is considered. A new class of Lyapunov functional is proposed by considering the information of neuron activation functions adequately. By using the delay-partitioning method and the reciprocally convex technique, some less conservative stability criteria ...
Loisel Hubert - - 2014
Knowledge on absorption by colored dissolved organic matter, a<sub>cdom</sub>, spatio-temporal variability in coastal areas is of fundamental importance in many field of researches related to biogeochemical cycles studies, coastal areas management, as well as land and water interactions in the coastal domain. A new method, based on the theoretical link ...
Hatz F F Department of Neurology, Hospital of the University of Basel, - - 2014
To compare the reliability of a newly developed Matlab® toolbox for the fully automated, pre- and post-processing of resting state EEG (automated analysis, AA) with the reliability of analysis involving visually controlled pre- and post-processing (VA). 34 healthy volunteers (age: median 38.2 (20-49), 82% female) had three consecutive 256-channel resting-state ...
Kiewra Dorota D Department of Microbial Ecology and Environmental Protection, Institute of Genetics and Microbiology, University of Wrocław, Wrocław, Poland. - - 2014
The relationship between climate data and tick questing activity is crucial for estimation of the spatial and temporal distribution of the risk of ticks and tick-borne diseases. This study establishes correlations between selected meteorological variables provided by the Weather Research and Forecasting model (WRF) and the questing activity of Ixodes ...
Hamaneh Mehdi Bagheri - - 2014
The electrical potential produced by the cardiac activity sometimes contaminates electroencephalogram (EEG) recordings, resulting in spiky activities that are referred to as electrocardiographic (EKG) artifact. For a variety of reasons it is often desirable to automatically detect and remove these artifacts. Especially, for accurate source localization of epileptic spikes in ...
He Fei - - 2014
Spectral measures of linear Granger causality have been widely applied to study the causal connectivity between time series data in neuroscience, biology, and economics. Traditional Granger causality measures are based on linear autoregressive with exogenous (ARX) inputs models of time series data, which cannot truly reveal nonlinear effects in the ...
Stichler Jaynelle F JF Author Affiliation: Professor Emerita, San Diego State University; Research and Professional Development Consultant, Sharp Mary Birch Hospital for Women & Newborns, San Diego, - - 2014
A conceptual model for healthcare facility design provides nurse leaders a framework for measuring the effect of specific or more global design features on patient, provider, and organizational outcomes. The model can help to explain relationships among variables of interest in facility design and be used to guide research studies ...
Virágh Csaba C ELTE Department of Biological Physics, 1117 Budapest, Pázmány Péter Sétány 1/A, - - 2014
Animal swarms displaying a variety of typical flocking patterns would not exist without the underlying safe, optimal and stable dynamics of the individuals. The emergence of these universal patterns can be efficiently reconstructed with agent-based models. If we want to reproduce these patterns with artificial systems, such as autonomous aerial ...
Duarte Nubia E - - 2014
Abstract Effective analytical tools are highly desirable for data analysis and for making the biological link between genotypic and phenotypic measures. In family data it is important to reconcile the methods that explain the phenotypic variability through fixed genetic effects and ones that estimate variance components using classical heritability methods. ...
Liu Chia-Yu CY Institute of Traditional Medicine, National Yang-Ming University, Taipei, Taiwan; Linsen and Chinese Medicine Branch, Taipei City Hospital, Taipei, Taiwan; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, - - 2014
Traditional Chinese medicines in treating systemic lupus erythematosus are not uncommon. However, logic of pattern diagnosis and consensus on treating this disease is lacking. This study aimed to explore the correlation between the pattern diagnosis of and its corresponding prescription in systemic lupus erythematosus. Clinical data including patterns and prescriptions ...
Chabot-Leclerc Alexandre A Department of Electrical Engineering, Centre for Applied Hearing Research, Technical University of Denmark, DK-2800 Kgs. Lyngby, - - 2014
Speech intelligibility models typically consist of a preprocessing part that transforms stimuli into some internal (auditory) representation and a decision metric that relates the internal representation to speech intelligibility. The present study analyzed the role of modulation filtering in the preprocessing of different speech intelligibility models by comparing predictions from ...
Baek Soonho S Yonsei University, 134 Shinchon-dong, Seodaemun-gu, 120-749, Seoul, Republic of Korea bestboybsh@dsp.yonsei.ac.kr, - - 2014
This letter investigates the impact of spectral compression on the vector Taylor series-based model adaptation algorithm. Unlike mel-frequency cepstral coefficients obtained by the logarithmic compression, the fractional power compression is used for extracting features. Since the relationship between acoustic models for clean and noisy speech depends on nonlinearity of the ...
Bentler Peter M - - 2014
Rigdon (2012) suggests that partial least squares (PLS) can be improved by killing it, that is, by making it into a different methodology based on components. We provide some history on problems with component-type methods and develop some implications of Rigdon's suggestion. It seems more appropriate to maintain and improve ...
Montasem Alexander - - 2014
To take a motivational approach, testing an idea derived from self-determination theory (SDT) that the pursuit of intrinsic life and professional aspirations is associated with enhanced subjective well-being. A cross-sectional survey of a cluster sample of 583 dentists in England provided data on the subjective importance of their intrinsic and ...
Schwartz Shalom H SH Department of Psychology,The Hebrew University of Jerusalem,Jerusalem 91905,Israel;International Laboratory of Socio-Cultural Research, National Research University Higher School of Economics,101000 - - 2014
Basic values explain more variance in political attitudes and preferences than other personality and sociodemographic variables. The values most relevant to the political domain are those likely to reflect the degree of negativity bias. Value conflicts that represent negativity bias clarify differences between what worries conservatives and liberals and suggest ...
Doloc-Mihu Anca A Department of Biology, Emory University, Atlanta, Georgia, United States of - - 2014
Recent experimental and computational studies suggest that linearly correlated sets of parameters (intrinsic and synaptic properties of neurons) allow central pattern-generating networks to produce and maintain their rhythmic activity regardless of changing internal and external conditions. To determine the role of correlated conductances in the robust maintenance of functional bursting ...
Töpfer Nadine N Systems Biology and Mathematical Modeling Group, Max Planck Institute of Molecular Plant Physiology, Potsdam, - - 2014
Constraint-based approaches have been used for integrating data in large-scale metabolic networks to obtain insights into metabolism of various organisms. Due to the underlying steady-state assumption, these approaches are usually not suited for making predictions about metabolite levels. Here, we ask whether we can make inferences about the variability of ...
Nikmanesh Zahra Z Department of Psychology, Faculty of Education and Psychology, University of Sistan and Baluchestan, Zahedan, - - 2014
To investigate relationship between addiction potentiality and different dimensions of emotional self-regulation. This descriptive and correlational study included students of Sistan and Baluchistan University, Sistan and Baluchestan, Iran. Participants were selected by random sampling method. We applied Addiction Potential Scale (APS) and Difficult in Emotion Regulation Scale (DERS) for this ...
Parlitz Ulrich U Max Planck Institute for Dynamics and Self-Organization, Am Faßberg 17, 37077 Göttingen, - - 2014
Features of the Jacobian matrix of the delay coordinates map are exploited for quantifying the robustness and reliability of state and parameter estimations for a given dynamical model using a measured time series. Relevant concepts of this approach are introduced and illustrated for discrete and continuous time systems employing a ...
Kowalczyk Piotr P School of Computing, Mathematics and Digital Technology, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United - - 2014
Linear Time Invariant (LTI) processes can be modelled by means of Auto-Regressive Moving Average (ARMA) model systems. In this paper, we examine whether an ARMA model can be fitted to a process characterised by switched nonlinearities. In particular, we conduct the following test: we generate data from known LTI and ...
Chevrier Jonathan J McGill University, Montreal, Quebec, - - 2014
The healthy worker survivor effect (HWSE) is a well-recognised bias usually described as a form of selection bias or confounding. A more precise epidemiologic explanation, however, has been elusive. We distinguish several components of the HWSE and suggest methods for bias correction in occupational cohort studies. Although generally referred to ...
Kuijpers Eelco E TNO, Zeist, The - - 2014
To assess personal exposure to carbon nanotubes for a study of early effect biomarkers among workers exposed to carbon nanotubes (CNTs). Three major job categories were identified in the exposed factory: production, R&D and office. For qualitative assessment personal 8-hr-TWA inhalable dust samples (n = 5) were collected in all ...
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