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Bi Yiming Y Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: - - 2014
Interference such as baseline drift and light scattering can degrade the model predictability in multivariate analysis of near-infrared (NIR) spectra. Usually interference can be represented by an additive and a multiplicative factor. In order to eliminate these interferences, correction parameters are needed to be estimated from spectra. However, the spectra ...
Bomben Valerie V Department of Neurology, Baylor College of Medicine, Houston, TX, USA. Electronic address: - - 2014
The nuclear retinoid X receptor agonist, bexarotene, has been implicated in recovery of cognitive function in mouse models of Alzheimer's disease (AD). Since AD genetic mouse models also show abnormal neural hyperexcitability, which may play a destructive role in memory storage and retrieval, we studied whether bexarotene exerted dynamic network ...
Giorno Virginia - - 2014
An Ornstein-Uhlenbeck diffusion process is considered as a model for the membrane potential activity of a single neuron. We assume that the neuron is subject to a sequence of inhibitory and excitatory post-synaptic potentials that occur with time-dependent rates. The resulting process is characterized by time-dependent drift. For this model, ...
Buonocore Aniello - - 2014
The aim of this paper is to consider a non-autonomous predator-prey-like system, with a Gompertz growth law for the prey. By introducing random variations in both prey birth and predator death rates, a stochastic model for the predator-prey-like system in a random environment is proposed and investigated. The corresponding Fokker-Planck ...
Guastello Stephen J SJ Marquette University, Milwaukee, - - 2014
This study aimed (a) to address the evidence for situational specificity in the connection between safety climate to occupational accidents, (b) to resolve similar issues between anxiety and accidents, (c) to expand and develop the concept of safety climate to include a wider range of organizational con-structs, (d) to assess ...
Hsu Chen-Yang CY Division of Biostatistics, College of Public Health, National Taiwan University, Room 533, No. 17, Hsu-Chow Road, Taipei, 100, - - 2014
We propose a chain binomial model to elucidate the transmission modes of influenza within households and with which to further evaluate the spread of influenza in a community. Data on the surveillance of influenza in Taiwan were collected from July 2001 to March 2002. A series of chain binomial models ...
Ataee Pedram - - 2014
This paper presents a feasibility study of a model-based approach to noninvasive and subject-specific monitoring of autonomic-cardiac regulation. The proposed approach is built upon individualizing a physiologically-based model by applying a parameter estimation method to routine clinical observations, thereby assuring physical transparency, computational efficiency, and clinical adaptability. To develop an ...
Tomita Yohei - - 2014
Although noninvasive brain-computer interfaces (BCI) based on electroencephalographic (EEG) signals have been studied increasingly over the recent decades, their performance is still limited in two important aspects. First, the difficulty of performing a reliable detection of BCI commands increases when EEG epoch length decreases, which makes high information transfer rates ...
Majewsky Vera V Institute of Complementary Medicine, University of Berne, Insel-Spital, Imhoof-Pavillon, 3010 Bern, Switzerland; Clinic for Animal Reproduction, Faculty of Veterinary Medicine, Freie Universität Berlin, Königsweg 65 (Haus 27, Gebäude 19), 14163 Berlin, Germany; Research Institute of Organic Agriculture FiBL, Ackerstrasse, Postfach, 3070 Frick, Switzerland. Electronic address: - - 2014
Reproducibility of basic research investigations in homeopathy is challenging. This study investigated if formerly observed effects of homeopathically potentised gibberellic acid (GA3) on growth of duckweed (Lemna gibba L.) were reproducible. Duckweed was grown in potencies (14x-30x) of GA3 and one time succussed and unsuccussed water controls. Outcome parameter area-related growth ...
Vansteenkiste Maarten M University of Gent, - - 2014
In the current study we aimed to examine the antecedents and outcomes associated with the variability in competitive volleyball players' (N = 67; Mage = 19.45; SD = 5.13) situational achievement goal pursuit and its underlying autonomous and controlling reasons. Players were followed during six consecutive games and data were ...
Abdollahiasl Akbar - - 2014
Data modeling techniques can create a virtual world to analyze decision systems. National drug authorities can use such techniques to take care of their deficiencies in decision making processes. This study was designed to build a system dynamics model to simulate the effects of market mix variables (5 P's) on ...
Chang Chia-Hao CH Department of Nursing, Chang Gung University of Science and Technology, Chiayi Campus, Chiayi, Taiwan - - 2014
Identification of cut-off values for key biomarkers of clinical risk is a useful clinical tool. The kappa coefficient is a popular descriptive statistical measure for summarising the cross classification of two nominal variables with identical classes. On the basis of this definition, I propose that the kappa coefficient can also ...
Gast Rebecca J RJ Woods Hole Oceanographic Institution, Woods Hole, MA, - - 2014
Protists are traditionally described as either phototrophic or heterotrophic, but studies have indicated that mixotrophic species, organisms that combine both strategies, can have significant impacts on prey populations in marine microbial food webs. While estimates of active mixotroph abundances in environmental samples are determined microscopically by fluorescent particle ingestion, species ...
Bosten J M - - 2014
If unique hues have special status in phenomenological experience as perceptually pure, it seems reasonable to assume that they are represented more precisely by the visual system than are other colors. Following the method of Malkoc et al. (J. Opt. Soc. Am. A22, 2154 [2005]), we gathered unique and binary hue ...
Cammin Jochen J Division of Medical Imaging Physics, The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland - - 2014
Energy discriminating, photon-counting detectors (PCDs) are an emerging technology for computed tomography (CT) with various potential benefits for clinical CT. The photon energies measured by PCDs can be distorted due to the interactions of a photon with the detector and the interaction of multiple coincident photons. These effects result in ...
Mauge Laetitia L Service d'hématologie biologique, Hôpital européen Georges Pompidou, AP-HP, Paris, France, Inserm U970 PARCC Équipe 10, Université Paris Descartes, Paris, - - 2014
Samples for hemostasis testing are vulnerable to the effects of preanalytical variables and quality standards for sample processing and storage must be defined to insure accurate results. This article presents the available informations on these preanalytical issues.
Willem Lander L Centre for Health Economics Research & Modeling of Infectious Diseases, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium; Department of Mathematics and Computer Science, University of Antwerp, Antwerp, Belgium; Interuniversitary Institute for Biostatistics and statistical Bioinformatics, Hasselt University, Diepenbeek, - - 2014
Modeling plays a major role in policy making, especially for infectious disease interventions but such models can be complex and computationally intensive. A more systematic exploration is needed to gain a thorough systems understanding. We present an active learning approach based on machine learning techniques as iterative surrogate modeling and ...
Meyniel Florent F Motivation, Brain & Behavior (MBB) team, Institut du Cerveau et de la Moelle épinière (ICM), Groupe Hospitalier Pitié-Salpêtrière, Université Pierre et Marie Curie (UPMC - Paris 6), Paris, - - 2014
A pervasive case of cost-benefit problem is how to allocate effort over time, i.e. deciding when to work and when to rest. An economic decision perspective would suggest that duration of effort is determined beforehand, depending on expected costs and benefits. However, the literature on exercise performance emphasizes that decisions ...
Qing Hui - - 2014
With the advances in biochemistry, molecular biology, and neurochemistry there has been impressive progress in understanding the molecular properties of anesthetic agents. However, there has been little focus on how the molecular properties of anesthetic agents lead to the observed macroscopic property that defines the anesthetic state, that is, lack ...
Xing He - - 2014
In this brief, based on the method of penalty functions, a recurrent neural network (NN) modeled by means of a differential inclusion is proposed for solving the bilevel linear programming problem (BLPP). Compared with the existing NNs for BLPP, the model has the least number of state variables and simple ...
Cavagna Andrea A Istituto Sistemi Complessi, Consiglio Nazionale delle Ricerche, UOS Sapienza, Rome, Italy and Dipartimento di Fisica, Università Sapienza, Rome, Italy and Initiative for the Theoretical Sciences, The Graduate Center, The City University of New York, New York, - - 2014
We derive a new method to infer from data the out-of-equilibrium alignment dynamics of collectively moving animal groups, by considering the maximum entropy model distribution consistent with temporal and spatial correlations of flight direction. When bird neighborhoods evolve rapidly, this dynamical inference correctly learns the parameters of the model, while ...
Liu Ying Y Department of Chemical & Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27695, - - 2014
Self-folding is the autonomous folding of two-dimensional shapes into three-dimensional forms in response to an external stimulus. This paper focuses on light-induced self-folding of prestrained polymer sheets patterned with black ink. The ink absorbs the light and the resulting heat induces the polymer beneath the ink to relax faster than ...
Ayache S S SS Service de physiologie, hôpital Henri-Mondor, AP-HP, 51, avenue de Maréchal-de-Lattre-de-Tassigny, 94010 Créteil, France; EA 4391, faculté de médecine, université Paris Est Créteil, 8, avenue du Général-Sarrail, 94010 Créteil, - - 2014
Neurophysiological investigation, based on accelerometric (ACC) and electromyographic (EMG) recordings, is an essential step in the diagnosis of tremor. Among various signal analysis methods, fast Fourier transform (FFT) is the most frequently used in this domain. However, FFT has several limitations: first, it assumes that tremor is a periodic and ...
Ponce Wong Ruben D - - 2014
Upper-limb amputees rely primarily on visual feedback when using their prostheses to interact with others or objects in their environment. A constant reliance upon visual feedback can be mentally exhausting and does not suffice for many activities when line-of-sight is unavailable. Upper-limb amputees could greatly benefit from the ability to ...
Altunrende M Emre ME Department of Neurosurgery, Taksim Training and Research Hospital, Istanbul, - - 2014
Neurosurgery and ophthalmology residents need many years to improve microsurgical skills. Laboratory training models are very important for developing surgical skills before clinical application of microsurgery. A simple simulation model is needed for residents to learn how to handle microsurgical instruments and to perform safe dissection of intracranial or intraorbital ...
Cornelis Hugo H Three Way Street, P. O. Box 5160, Braddon, Australian Capital Territory 2612, - - 2014
Consciousness is a topic of considerable human curiosity with a long history of philosophical analysis and debate. We consider there is nothing particularly complicated about consciousness when viewed as a necessary process of the vertebrate nervous system. Here, we propose a physiological "explanatory gap" is created during each present moment ...
Chicharro Daniel D Center for Neuroscience and Cognitive Systems, UniTn, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy - - 2014
The role of correlations between neuronal responses is crucial to understanding the neural code. A framework used to study this role comprises a breakdown of the mutual information between stimuli and responses into terms that aim to account for different coding modalities and the distinction of different notions of independence. ...
Eriksson Mats - - 2014
In a recent study, we presented a novel quantitative-structure-activity-relationship (QSAR) approach, combining R-group signatures and nonlinear support-vector-machines (SVM) to build interpretable local models for congeneric compound sets. Here, we introduce further refinements in the fingerprint scheme for the purpose of analysing and visualising structure-activity relationships (SAR). The concept of distance ...
Deng Zhaohong - - 2014
Inductive transfer learning has attracted increasing attention for the training of effective model in the target domain by leveraging the information in the source domain. However, most transfer learning methods are developed for a specific model, such as the commonly used support vector machine, which makes the methods applicable only ...
Gromski Piotr S PS School of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, - - 2014
Many analytical approaches such as mass spectrometry generate large amounts of data (input variables) per sample analysed, and not all of these variables are important or related to the target output of interest. The selection of a smaller number of variables prior to sample classification is a widespread task in ...
González-Álvarez Jaime J Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006, Oviedo, Spain, - - 2014
A chemometric study was carried out to characterize three ionic liquid types (ILs) with hexacationic imidazolium, polymeric imidazolium, and phosphonium cationic cores, using a range of contra-anions such as halogens, thiocyanate, boron anions, triflate, and bistriflimide. The solvation parameter model developed by Abraham et al., unsupervised techniques as cluster analysis ...
Bisiacchi Patrizia P Department of General Psychology, University of Padova, Padova, Italy, - - 2014
Recent evidence reveals that inter- and intra-individual variability significantly affects cognitive performance in a number of neuropsychological pathologies. We applied a flexible family of statistical models to elucidate the contribution of inter- and intra-individual variables on cognitive functioning in healthy volunteers and patients at risk for hepatic encephalopathy (HE). Sixty-five ...
Rabosky Daniel L DL Museum of Zoology, University of Michigan, Ann Arbor, Michigan 48109 - - 2014
The correlation between species diversification and morphological evolution has long been of interest in evolutionary biology. We investigated the relationship between these processes during the radiation of 250+ scincid lizards that constitute Australia's most species-rich clade of terrestrial vertebrates. We generated a time-calibrated phylogenetic tree for the group that was ...
Shalloo L L 1 Livestock Systems Department, Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, - - 2014
There are significant costs associated with reproductive inefficiency in pasture-based dairy herds. This study has quantified the economic effect of a number of key variables associated with reproductive inefficiency in a dairy herd and related them to 6-week calving rate for both cows and heifers. These variables include: increased culling ...
Cox Matthew G MG Department of Behavioral Science, University of Texas MD Anderson Cancer Center, Houston, TX, - - 2014
Causal inference continues to be a critical aspect of evaluation research. Recent research in causal inference for statistical mediation has focused on addressing the sequential ignorability assumption; specifically, that there is no confounding between the mediator and the outcome variable. This article compares and contrasts three different methods for assessing ...
Laszlo Sarah S Department of Psychology, State University of New York, Binghamton, 4400 Vestal Parkway East, Binghamton, NY 13902, United States. Electronic address: - - 2014
The Parallel Distributed Processing (PDP) framework is built on neural-style computation, and is thus well-suited for simulating the neural implementation of cognition. However, relatively little cognitive modeling work has concerned neural measures, instead focusing on behavior. Here, we extend a PDP model of reading-related components in the Event-Related Potential (ERP) ...
Khushaba Rami N RN School of Electrical, Mechanical and Mechatronics Systems, Faculty of Engineering and Information Technology, University of Technology, Sydney (UTS), Australia. Electronic address: - - 2014
Recent studies in Electromyogram (EMG) pattern recognition reveal a gap between research findings and a viable clinical implementation of myoelectric control strategies. One of the important factors contributing to the limited performance of such controllers in practice is the variation in the limb position associated with normal use as it ...
Rozeboom Esther E Minimal Invasive Surgery and Interventions, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands, - - 2014
Flexible endoscopes are increasingly used to perform advanced intraluminal and transluminal interventions. These complex interventions demand accurate and efficient control, however, current endoscopes lack intuitiveness and ergonomic control of the endoscope tip. Alternative handheld controllers can improve intuitiveness and ergonomics, though previous studies are inconclusive concerning their effect on the ...
Furlotte Nicholas A NA 1] Microsoft Research, Los Angeles, CA, USA [2] Computer Science Department, University of California, Los Angeles, CA, - - 2014
The use of mixed models to determine narrow-sense heritability and related quantities such as SNP heritability has received much recent attention. Less attention has been paid to the inherent variability in these estimates. One approach for quantifying variability in estimates of heritability is a frequentist approach, in which heritability is ...
Del Rio do Valle Rodrigo R Institute of Health Sciences, Paulista University, São Paulo, Brazil; Applied Research Division, São Paulo Zoological Park Foundation, São Paulo, Brazil; Wildlife Management Consultoria Veterinária, São Paulo, - - 2014
The common marmoset (Callithrix jacchus) is of interest for reproductive studies because of their high and variable fertility in captivity. However, to understand this variability, much basic information still needs to be gathered. This study is the first to characterize marmoset semen comparing a German and a Brazilian colony. All ...
Hwang Taehee T Institute for the Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, - - 2014
Mountain watersheds are primary sources of freshwater, carbon sequestration, and other ecosystem services. There is significant interest in the effects of climate change and variability on these processes over short to long time scales. Much of the impact of hydroclimate variability in forest ecosystems is manifested in vegetation dynamics in ...
Vanderweele Tyler J TJ From the aDepartments of Epidemiology and Biostatistics, Harvard School of Public Health, Boston, MA; and bDepartment of Nutrition, Harvard School of Public Health, Boston, - - 2014
We give critical attention to the assumptions underlying Mendelian randomization analysis and their biological plausibility. Several scenarios violating the Mendelian randomization assumptions are described, including settings with inadequate phenotype definition, the setting of time-varying exposures, the presence of gene-environment interaction, the existence of measurement error, the possibility of reverse causation, ...
Brockmann Uwe H UH Hamburg University, Institute for Geology, Dept. Biogeochemistry and Marine Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany. Electronic address: - - 2014
Confidence of monitoring data is dependent on their variability and representativeness of sampling in space and time. Whereas variability can be assessed as statistical confidence limits, representative sampling is related to equidistant sampling, considering gradients or changing rates at sampling gaps. By the proposed method both aspects are combined, resulting ...
Macnab Ying C YC 1Epidemiology and Biostatistics, School of Population and Public Health, University of British Columbia, Vancouver, - - 2014
We present Bayesian hierarchical spatial model development motivated from a recent analysis of noisy small area response rate data, named the Booster data. The Booster data are postcode-level aggregates from a recent mail-out recruitment for a physical exercise intervention in deprived urban neighbourhoods in Sheffield, UK. Bayesian hierarchical Bernoulli-binomial spatial ...
Kennedy Jonathan - - 2014
A recent Lancet article reported the first reliable estimates of suicide rates in India. National-level suicide rates are among the highest in the world, but suicide rates vary sharply between states and the causes of these differences are disputed. We test whether differences in the structure of agricultural production explain ...
Packard Gary C GC Department of Biology, Colorado State University, Fort Collins, - - 2014
The traditional allometric method, which is at the heart of research paradigms used by comparative biologists around the world, entails fitting a straight line to logarithmic transformations of the original bivariate data and then back-transforming the resulting equation to form a two-parameter power function in the arithmetic scale. The method ...
Scheff Jeremy D JD Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, - - 2014
Analysis of heart rate variability (HRV) is a promising diagnostic technique due to the noninvasive nature of the measurements involved and established correlations with disease severity, particularly in inflammation-linked disorders. However, the complexities underlying the interpretation of HRV complicate understanding the mechanisms that cause variability. Despite this, such interpretations are ...
Pieters Sigrid S Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research, Vrije Universiteit Brussel - VUB, Laarbeeklaan 103, Brussels B-1090, - - 2014
The aim of this work is to build a multivariate calibration (MVC) model from Raman spectra for the prediction of the protein conformational state class (i.e. native-like or non-native) in different freeze-dried pharmaceutical formulations of a model protein lactate dehydrogenase (LDH). As this model would be intended to facilitate and ...
El-Sabaawi Rana W RW Department of Ecology and Evolutionary Biology, Cornell University Ithaca, NewYork, - - 2014
Interspecific differences in organismal stoichiometry (OS) have been documented in a wide range of animal taxa and are of significant interest for understanding evolutionary patterns in OS. In contrast, intraspecific variation in animal OS has generally been treated as analytical noise or random variation, even though available data suggest intraspecific ...
Nam Yun Sik YS Advanced Analysis Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryangri, Seoul, 136-791, - - 2014
Questioned documents examined in a forensic laboratory sometimes contain signatures written with ballpoint pen inks; these signatures were examined to assess the feasibility of micro-attenuated total reflectance (ATR) Fourier transform infrared (FTIR) spectroscopy as a forensic tool. Micro-ATR FTIR spectra for signatures written with 63 ballpoint pens available commercially in ...
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