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Marathe Amar R - - 2014
Patterns of neural data obtained from electroencephalography (EEG) can be classified by machine learning techniques to increase human-system performance. In controlled laboratory settings this classification approach works well; however, transitioning these approaches into more dynamic, unconstrained environments will present several significant challenges. One such challenge is an increase in temporal ...
Kollmorgen Sepp S Institute of Neuroinformatics, University of Zurich/ETH Zurich, Zurich, - - 2014
Recently, there have been remarkable advances in modeling the relationships between the sensory environment, neuronal responses, and behavior. However, most models cannot encompass variable stimulus-response relationships such as varying response latencies and state or context dependence of the neural code. Here, we consider response modeling as a dynamic alignment problem ...
Pan Tao T Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Educational Institutes, Jinan University, Guangzhou 510632, - - 2014
Equidistant combination multiple linear regression (EC-MLR) for the quasi-continuous wavelength selection of spectroscopic analysis was proposed and successfully applied to the reagent-free determination of soil organic matter with near-infrared spectroscopy. For comparison, the continuous-mode moving window partial least squares (MWPLS) and the discrete-mode successive projections algorithm (SPA) were improved by ...
Doolette David J DJ Navy Experimental Diving Unit, 321 Bullfinch Road, Panama City, FL 32407, USA, Phone: +1-(0)850-230-3100, E-mail: - - 2014
In studies of decompression procedures, ultrasonically detected venous gas emboli (VGE) are commonly used as a surrogate outcome if decompression sickness (DCS) is unlikely to be observed. There is substantial variability in observed VGE grades, and studies should be designed with sufficient power to detect an important effect. Data for ...
Pouplier Marianne - - 2014
PURPOSE Phonetic accommodation - whether in an error allophonic properties are appropriate to the new environment - has traditionally been used to identify the processing level at which an error has occurred. Recent studies have challenged the view that non-canonical productions may solely be due to phonetic, not phonological processing ...
Eckhard Timo - - 2014
In this work, we evaluate the conditionally positive definite logarithmic kernel in kernel-based estimation of reflectance spectra. Reflectance spectra are estimated from responses of a 12-channel multispectral imaging system. We demonstrate the performance of the logarithmic kernel in comparison with the linear and Gaussian kernel using simulated and measured camera ...
Sheng Zheng Z College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, - - 2014
This paper introduces a novel hybrid optimization algorithm to establish the parameters of chaotic systems. In order to deal with the weaknesses of the traditional cuckoo search algorithm, the proposed adaptive cuckoo search with simulated annealing algorithm is presented, which incorporates the adaptive parameters adjusting operation and the simulated annealing ...
Wang Ruofan R Department of Electrical and Automation Engineering, Tianjin University, Tianjin, - - 2014
A combined method composing of the unscented Kalman filter (UKF) and the synchronization-based method is proposed for estimating electrophysiological variables and parameters of a thalamocortical (TC) neuron model, which is commonly used for studying Parkinson's disease for its relay role of connecting the basal ganglia and the cortex. In this ...
Cummins Megan A MA Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, New York, United States of - - 2014
Reverse rate dependence is a problematic property of antiarrhythmic drugs that prolong the cardiac action potential (AP). The prolongation caused by reverse rate dependent agents is greater at slow heart rates, resulting in both reduced arrhythmia suppression at fast rates and increased arrhythmia risk at slow rates. The opposite property, ...
Enders Craig K CK Department of Psychology, Arizona State - - 2014
The existing missing data literature does not provide a clear prescription for estimating interaction effects with missing data, particularly when the interaction involves a pair of continuous variables. In this article, we describe maximum likelihood and multiple imputation procedures for this common analysis problem. We outline 3 latent variable model ...
Fascione Jeanna M JM Foot & Ankle Specialists of Ohio, Inc, Mentor, - - 2014
Background : The use of foot measurements to classify morphology and interpret foot function remains one of the focal concepts of lower-extremity biomechanics. However, only 27% to 55% of midfoot variance in foot pressures has been determined in the most comprehensive models. We investigated whether dynamic walking footprint measurements are ...
Clemson Philip T PT Department of Physics, Lancaster University, Lancaster LA1 4YB, United - - 2014
Following the development of a new class of self-sustained oscillators with a time-varying but stable frequency, the inverse approach to these systems is now formulated. We show how observed data arranged in a single-variable time series can be used to recognize such systems. This approach makes use of time-frequency domain ...
Starnini Michele M Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Campus Nord B4, 08034 Barcelona, - - 2014
We study the temporal percolation properties of temporal networks by taking as a representative example the recently proposed activity-driven-network model [N. Perra et al., Sci. Rep. 2, 469 (2012)]. Building upon an analytical framework based on a mapping to hidden variables networks, we provide expressions for the percolation time Tp ...
Barucca Paolo P Dipartimento di Fisica, Sapienza Università di Roma, INFN, Sezione di Roma I, IPFC - CNR, P.le Aldo Moro 2, I-00185 Roma, - - 2014
We present a treatable generalization of the Sherrington-Kirkpatrick (SK) model which introduces correlations in the elements of the coupling matrix through multiplicative disorder on the single variables and investigate the consequences on the phase diagram. We define a generalized qEA parameter and test the structural stability of the SK results ...
Brendel Oliver O INRA, UMR1137 'Ecologie et Ecophysiologie Forestières', F-54280, Champenoux, France; Université de Lorraine, UMR1137 'Ecologie et Ecophysiologie Forestières', Faculté des Sciences, F-54500, Vandoeuvre-Les-Nancy, - - 2014
The isotopic compositions of low-mass elements such as carbon are commonly expressed on the δ scale, relative to the isotopic ratio of an international standard (RST ). Carbon stable isotope measurements of plant material are interpreted with an apparently biological meaning as an estimator of water use efficiency, and this ...
Wu Wei W Lane Center for Computational Biology, School of Computer Science, Carnegie Mellon University, Pittsburgh. Electronic address: - - 2014
Previous studies have identified asthma phenotypes based on small numbers of clinical, physiologic, or inflammatory characteristics. However, no studies have used a wide range of variables using machine learning approaches. We sought to identify subphenotypes of asthma by using blood, bronchoscopic, exhaled nitric oxide, and clinical data from the Severe ...
Nguyen Mi T - - 2014
The endogenous sunlight inactivation rates of MS2 coliphage in photosensitizer-free water were measured (kobs) under different light conditions, and compared to modeled inactivation rates (kmod) computed using a previously published action spectrum. Experiments were conducted under simulated and natural sunlight. There was generally good agreement between modeled and observed MS2 ...
Sun Chen C The Sensory Analysis Center, Kansas State University, 1310 Research Park, Manhattan, KS, 66502, - - 2014
The objective of this study was to develop an initial lexicon for sensory properties of nail polish and to validate this lexicon using a descriptive analysis study of selected samples. Seventeen commercial products from four categories (regular, flake-containing, water-based and gel) were used in this study. Descriptive sensory analysis was ...
Jones Mark - - 2014
Graphical techniques can provide visually compelling insights into complex data patterns. In this paper we present a type of lasagne plot showing changes in categorical variables for participants measured at regular intervals over time and propose statistical models to estimate distributions of marginal and transitional probabilities. The plot uses stacked ...
Sinha Samiran S Department of Statistics, Texas A&M University, College Station, Texas, 77843, - - 2014
Missing covariate data often arise in biomedical studies, and analysis of such data that ignores subjects with incomplete information may lead to inefficient and possibly biased estimates. A great deal of attention has been paid to handling a single missing covariate or a monotone pattern of missing data when the ...
Della-Rossa L L 1 Institut national de la recherche agronomique, UMR1213 Herbivores, Theix, 63122 Saint-Genès-Champanelle, - - 2014
Animal sociability measurements based on inter-individual distances or nearest-neighbour distributions can be obtained automatically with telemetry collars. So far, all the indices that have been used require the whole group to be observed. Here, we propose an index of the variability in affinity relationships in groups of domestic herbivores, whose ...
Boussari Olayidé O International Chair in Mathematical Physics and Applications, Laboratoire d'Etude et de Recherche en Statistique Appliquée et Modélisation, Université d'Abomey-Calavi, Abomey-Calavi, - - 2014
Efficient malaria vector control requires knowledge of spatio-temporal vector dynamics. We have classified village groups according to the biting rate profiles of both Anopheles coluzzii and An. gambiae, the major malaria vectors in these villages. Mosquitoes were captured by human bait in 28 South Benin villages during 2009. Both An. ...
Burns Kevin J KJ Department of Biology, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA. Electronic address: - - 2014
Thraupidae is the second largest family of birds and represents about 4% of all avian species and 12% of the Neotropical avifauna. Species in this family display a wide range of plumage colors and patterns, foraging behaviors, vocalizations, ecotypes, and habitat preferences. The lack of a complete phylogeny for tanagers ...
Proulx Sébastien S Montreal Neurological Institute, McGill University, Montreal, - - 2014
Activation detection in functional Magnetic Resonance Imaging (fMRI) typically assumes the hemodynamic response to neuronal activity to be invariant across brain regions and subjects. Reports of substantial variability of the morphology of Blood-Oxygenation-Level-Dependent (BOLD) responses are accumulating, suggesting that the use of a single generic model of the expected response ...
de Villemereuil Pierre P Universite Jospeh Fourier, Centre National de la Recherche Scientifique, LECA, UMR 5553, 2233 rue de la piscine, 38400, Saint Martin d'Heres, - - 2014
The recent availability of Next Generation Sequencing (NGS) has made possible the use of dense genetic markers to identify regions of the genome that may be under the influence of selection. Several statistical methods have been developed recently for this purpose. Here, we present the results of an individual-based simulation ...
Heal Geoffrey M GM Columbia Business School, Columbia University, New York, NY - - 2014
Disagreements about the value of the utility discount rate-the rate at which our concern for the welfare of future people declines with their distance from us in time-are at the heart of the debate about the appropriate intensity of climate policy. Seemingly small differences in the discount rate yield very ...
Rocha Felipe Bastos FB Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Unicamp, Cx. Postal 6109, Campinas, 13083-970, SP, - - 2014
In response to our previous study, Liefting et al. argue, in defense of their work on latitudinal variation of developmental rate reaction norms (RNs), that: (i) developmental rate (the reciprocal of development time: rate = time(-1) ) is a more biologically relevant variable than development time; (ii) the linear RN ...
Lepich Tomasz T Department of Human Anatomy, Medical University of Silesia, Katowice, - - 2014
Anthropological analysis of the orbits using classic anthropometric instruments based on width and height measurements as well as orbital index allows for classification of orbits in terms of their shape, yet it has poor clinical application. Nowadays computer graphics enables a precise research technique implementing the latest achievements in digital ...
Blum D D European Palliative Care Research Centre, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, - - 2014
Weight loss limits cancer therapy, quality of life and survival. Common diagnostic criteria and a framework for a classification system for cancer cachexia were recently agreed upon by international consensus. Specific assessment domains (Stores, Intake, Catabolism and Function) were proposed. The aim of this study is to validate this diagnostic ...
Li Lian L Key Laboratory of Chemical Biology of Natural Products (Ministry of Education), Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Shandong University, No. 44 Wenhuaxi Road, Jinan 250012, - - 2014
Vibrational spectroscopy including Raman and near-infrared (NIR) spectroscopy has become an attractive tool for pharmaceutical analysis. In this study, effective calibration models for the identification of anisodamine tablet and its counterfeit and the distinguishment of manufacturing plants, based on Raman and NIR spectroscopy, were built, respectively. Anisodamine counterfeit tablets were ...
Schaepe Sebastian S Institute for Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Straße 3, 06120, Halle (Saale), Germany, - - 2014
While data-based modeling is possible in various ways, data-based optimization has not been previously described. Here we present such an optimization technique. It is based on dynamic programming principles and uses data directly from exploratory experiments where the influence of the adjustable variables u were tested at various values. Instead ...
Heyse Bjorn B From the Department of Anesthesia, Ghent University Hospital, Gent, Belgium (B.H.); Department of Anesthesia, Ghent University, Gent, Belgium (M.M.R.F.S.); Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands (J.H.P., L.N.H., D.J.E., M.M.R.F.S., H.E.M.V.); and Department of Anesthesiology, Bern Hospital Network and University of Bern, Bern, Switzerland - - 2014
The authors studied the interaction between sevoflurane and remifentanil on bispectral index (BIS), state entropy (SE), response entropy (RE), Composite Variability Index, and Surgical Pleth Index, by using a response surface methodology. The authors also studied the influence of stimulation on this interaction. Forty patients received combined concentrations of remifentanil ...
Rakkiyappan R R Department of Mathematics, Bharathiar University, Coimbatore - 641 046, Tamilnadu, India. Electronic address: - - 2014
In this paper, we investigate a problem of exponential state estimation for Markovian jumping genetic regulatory networks with mode-dependent probabilistic time-varying delays. A new type of mode-dependent probabilistic leakage time-varying delay is considered. Given the probability distribution of the time-delays, stochastic variables that satisfying Bernoulli random binary distribution are formulated ...
Hughes Rachael A - - 2014
Chained equations imputation is widely used in medical research. It uses a set of conditional models, so is more flexible than joint modelling imputation for the imputation of different types of variables (e.g. binary, ordinal or unordered categorical). However, chained equations imputation does not correspond to drawing from a joint ...
Decelle Aurélien A Dipartimento di Fisica, Università La Sapienza, Piazzale Aldo Moro 5, I-00185 Roma, - - 2014
In this Letter we propose a new method to infer the topology of the interaction network in pairwise models with Ising variables. By using the pseudolikelihood method (PLM) at high temperature, it is generally possible to distinguish between zero and nonzero couplings because a clear gap separate the two groups. ...
Kinney Justin B JB Simons Center for Quantitative Biology, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY - - 2014
How should one quantify the strength of association between two random variables without bias for relationships of a specific form? Despite its conceptual simplicity, this notion of statistical "equitability" has yet to receive a definitive mathematical formalization. Here we argue that equitability is properly formalized by a self-consistency condition closely ...
McKechnie Iain I Department of Anthropology, University of British Columbia, Vancouver, BC, Canada V6T - - 2014
Pacific herring (Clupea pallasii), a foundation of coastal social-ecological systems, is in decline throughout much of its range. We assembled data on fish bones from 171 archaeological sites from Alaska, British Columbia, and Washington to provide proxy measures of past herring distribution and abundance. The dataset represents 435,777 fish bones, ...
Tiainen Mika M School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FIN-70211 Kuopio, - - 2014
The quantitative interpretation of (1)H NMR spectra of mixtures like the biofluids is a demanding task due to spectral complexity and overlap. Complications may arise also from water suppression, T2-editing, protein interactions, relaxation differences of the species, experimental artifacts and, furthermore, the spectra may contain unknown components and macromolecular background ...
Song Xin-Yuan XY 1Department of Statistics, The Chinese University of Hong Kong, Hong - - 2014
Transformation latent variable models are proposed in this study to analyze multivariate censored data. The proposed models generalize conventional linear transformation models to semiparametric transformation models that accommodate latent variables. The characteristics of the latent variables were assessed based on several correlated observed indicators through measurement equations. A Bayesian approach ...
Ernst Monique M National Institute of Mental Health, 15K North Drive, MSC 2670, 20892 Bethesda, MD, USA. Electronic address: - - 2014
The triadic neural systems model is a heuristic tool, which was developed with the goal of providing a framework for neuroscience research into motivated behaviors. Unlike dual models that highlight dynamics between approach systems centered on striatal function and control systems centered on prefrontal cortex, the triadic model also includes ...
Bai Baodong B Institute of Biomedical and Electromagnetic Engineering, Shenyang University of Technology, Shenyang, 110870, China, - - 2014
Functional magnetic resonance imaging (fMRI) has recently become an effective means to explore the mechanism of functional rehabilitation in stroke patients. Neural noise is an inevitable structural noise, and is an important factor caused individual differences in fMRI data, therefore, eliminating the neural noise is being regarded as one of ...
Valleriani Angelo A Max Planck Institute of Colloids and Interfaces, Department of Theory and Bio-Systems, 14424 Potsdam, - - 2014
Complex Markov models are widely used and powerful predictive tools to analyze stochastic biochemical processes. However, when the network of states is unknown, it is necessary to extract information from the data to partially build the network and estimate the values of the rates. The short-time behavior of the first-passage ...
Coudert L H LH Laboratoire Inter-universitaire des Systèmes Atmosphériques, UMR 7583 du CNRS, Universités Paris Est Créteil et Paris Diderot, 61 Avenue du Général de Gaulle, 94010 Créteil Cedex, - - 2014
The first theoretical approach aimed at accounting for the energy levels of a non-rigid molecule displaying asymmetric-top asymmetric-frame internal rotation is developed. It is applied to a line position analysis of the high-resolution spectrum of the non-rigid CH2DOH molecule and allows us to carry out a global analysis of a ...
Rincent Renaud R Institut National de la Recherche Agronomique (INRA); KWS Saat AG; Limagrain; - - 2014
Association mapping has permitted the discovery of major QTLs in many species. It can be applied to existing populations and, as a consequence, it is generally necessary to take into account structure and relatedness among individuals in the statistical model to control false positives. We studied analytically power in association ...
Werfel Justin J Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, - - 2014
Complex systems are characterized by many independent components whose low-level actions produce collective high-level results. Predicting high-level results given low-level rules is a key open challenge; the inverse problem, finding low-level rules that give specific outcomes, is in general still less understood. We present a multi-agent construction system inspired by ...
Jasechko Scott S Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico 87131, - - 2014
replying to A. M. J. Coenders-Gerrits et al. 506, http://dx.doi.org/10.1038/nature12925 (2014)In their Comment, Coenders-Gerrits et al. suggest that our conclusion that transpiration dominates the terrestrial water cycle is biased by unrepresentative input data and optimistic uncertainty ranges related to runoff, interception and the isotopic compositions of transpired and evaporated moisture. ...
Meier C M CM Swiss Ornithological Institute, Seerose 1, CH-6204 Sempach, - - 2014
Invasive parasites are of great global concern. Understanding the factors influencing the spread of invading pest species is a first step in developing effective countermeasures. Growing empirical evidence suggests that spread rates are essentially influenced by spatiotemporal dynamics of host-parasite interactions, yet approaches modelling spread rate have typically assumed static ...
Lin Shu S State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, Zhejiang, China. Electronic address: - - 2014
This paper discusses active surge control in variable speed axial compressors. A compression system equipped with a variable area throttle is investigated. Based on a given compressor model, a fuzzy logic controller is designed for surge control and a proportional speed controller is used for speed control. The fuzzy controller ...
Wang Handing H Key Lab of Intelligent Perception and Image Understanding of Ministry of Education, International Center of Intelligent Perception and Computation, Xidian University, Xi'an, 710071, China. - - 2014
Abstract There can be a complicated mapping relation between decision variables and objective functions in multi-objective optimization problems (MOPs). It is uncommon that decision variables influence objective functions equally. Decision variables act differently in different objective functions. Hence, often, the mapping relation is unbalanced, which causes some redundancy during the ...
Perales Francisco F Institute for Social Science Research, School of Social Science, The University of Queensland, Brisbane, - - 2014
The purpose of this study is to provide a comprehensive analysis of the associations between the frequency of moderate or vigorous physical activity (MVPA) and quality of life (QoL) measures using longitudinal data and panel regression models on a large, representative sample of the Australian population. This study used yearly ...
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