Results 401  450 of 3247  
< 4 5 6 7 8 9 10 11 12 13 14 >  
Xu Yuan Y Key Laboratory of Advanced Design and Intelligent Computing, Dalian University, Ministry of Education, Dalian,   2014
Network motifs are overly represented as topological patterns that occur more often in a given network than in random networks, and take on some certain functions in practical biological applications. Existing methods of detecting network motifs have focused on computational efficiency. However, detecting network motifs also presents huge challenges in ...


Jamil Tahira T Biometris, Wageningen University and Research Centre, Wageningen, the Netherlands; Department of Mathematics, COMSATS Institute of Information Technology, Islamabad,   2014
In this paper we attempt to explain observed niche differences among species (i.e. differences in their distribution along environmental gradients) by differences in trait values (e.g. volume) in phytoplankton communities. For this, we propose the traitmodulated Gaussian logistic model in which the niche parameters (optimum, tolerance and maximum) are made ...


Liu Hao H Nanjing University of Aeronautics and Astronautics, P.R. China Jinling Hospital, Department Orthopedics, Nanjing University School of Medicine, P.R.   2014
Separation of the femur head and acetabulum is one of main difficulties in the diseased hip joint due to deformed shapes and extreme narrowness of the joint space. To improve the segmentation accuracy is the key point of existing automatic or semiautomatic segmentation methods. In this paper, we propose a ...


The consequences of ignoring measurement invariance for path coefficients in structural equation ...
Guenole Nigel N IBM Smarter Workforce Institute London, UK ; Institute of Management Studies, Goldsmiths, University of London London,   2014
We report a Monte Carlo study examining the effects of two strategies for handling measurement noninvariance  modeling and ignoring noninvariant items  on structural regression coefficients between latent variables measured with item response theory models for categorical indicators. These strategies were examined across four levels and three types of ...


Schrago C G CG Departamento de Genética, Universidade Federal do Rio de Janeiro, Brasil   2014
The origin of New World anthropoids has received renewed attention since the advent of molecular dating methods that relax the assumption of a strict molecular clock. However, the studies conducted to date have estimated the time of the separation of New World and Old World anthropoids at values as different ...


Aydin Umit U Institute for Biomagnetism and Biosignalanalysis, Westfälische WilhelmsUniversität Münster, Münster,   2014
To increase the reliability for the noninvasive determination of the irritative zone in presurgical epilepsy diagnosis, we introduce here a new experimental and methodological source analysis pipeline that combines the complementary information in EEG and MEG, and apply it to data from a patient, suffering from refractory focal epilepsy. Skull ...


Penin Alexandr A 0000000231272979 "D. Ghitu" Institute of Electronic Engineering and Nanotechnologies, Academy of Sciences of Moldova, Academiei Street 3/3, 2028 Chisinau,   2014
The droop currentsharing method for voltage sources of a limited capacity is considered. Influence of equalizing resistors and load resistor is investigated on uniform distribution of relative values of currents when the actual loading corresponds to the capacity of a concrete source. Novel concepts for quantitative representation of operating regimes ...


Sparks C   2014
The research project described in this article was undertaken to establish baseline information for a Health Impact Assessment (HIA) project of Interstate 75 road construction in Cincinnati, Ohio. The objective of the authors' study was to evaluate the concentrations of elemental and organic carbon (EC and OC), as well as ...


Louk Maya M Department of Ubiquitous IT, Graduate School of Dongseo University, SasangGu, Busan 617716, Republic of   2014
There are many malware applications in Smartphone. Smartphone's users may become unaware if their data has been recorded and stolen by intruders via malware. Smartphonewhether for business or personal usemay not be protected from malwares. Thus, monitoring, detecting, tracking, and notification (MDTN) have become the main purpose of the writing ...


Bruza Peter P Science and Engineering Faculty, Information Systems School, Queensland University of Technology Brisbane, QLD,   2014
This article presents a study of how humans perceive and judge the relevance of documents. Humans are adept at making reasonably robust and quick decisions about what information is relevant to them, despite the ever increasing complexity and volume of their surrounding information environment. The literature on document relevance has ...


Liu XianFang XF Department of Mathematics, Chongqing Higher Education Mega Center, Chongqing Normal University, Huxi Campus, Chongqing 401331,   2014
We obtain an expectation formula and give the probabilistic proofs of some summation and transformation formulas of qseries based on our expectation formula. Although these formulas in themselves are not the probability results, the proofs given are based on probabilistic concepts.


Chaiwatpongsakorn Chaichana C Department of Biomedical, Chemical, and Environmental Engineering, University of Cincinnati, 2901 Woodside Dr., Cincinnati, OH 45221, USA.   2014
Wireless sensor networks are becoming increasingly important as an alternative solution for environment monitoring because they can reduce cost and complexity. Also, they can improve reliability and data availability in places where traditional monitoring methods are difficult to site. In this study, a carbon monoxide wireless sensor network (COWSN) was ...


Suh Young Soo YS Department of Electrical Engineering, University of Ulsan, Namgu 680749, Ulsan, Korea.   2014
Locationdependent differences of ambient magnetic fields inside a building can be used to estimate location. In this paper, an inertial/magnetic sensor is attached to a belt position and its location is estimated using the ambient magnetic field. The walking distance is estimated using the linear relationship between the walking step ...


Zhou Qi Q Department of Electrical Engineering at the Florida International University, Miami, FL 33174,   2014
This study establishes a new approach for combining neuroimaging and neuropsychological measures for an optimal decisional space to classify subjects with Alzheimer's disease (AD). This approach relies on a multivariate feature selection method with different MRI normalization techniques. Subcortical volume, cortical thickness, and surface area measures are obtained using MRIs ...


DrzałGrabiec Justyna J Institute of Physiotherapy, University of Rzeszów, 26 Warszawska Street, 35205 Rzeszów,   2014
Introduction. The aim of this study was to evaluate the compatibility of external measurements of parameters characterizing scoliosis using the photogrammetric method. Material. The study involved 120 children between the ages of 7 and 11 years in Podkarpackie (Poland). Method. Measurements of body posture characteristics were performed using the photogrammetric ...


Reidpath Daniel D DD South East Asia Community Observatory (SEACO), Monash University, Bandar Sunway, Malaysia ; Global Public Health, School of Medicine and Health Sciences, Monash University, Bandar Sunway,   2014
Measures of household socioeconomic position (SEP) are widely used in health research. There exist a number of approaches to their measurement, with Principal Components Analysis (PCA) applied to a basket of household assets being one of the most common. PCA, however, carries a number of assumptions about the distribution of ...


Loohuis Loes Olde LO Center for Neurobehavioral Genetics, University of California Los Angeles, Los Angeles, United States of   2014
Existing techniques to reconstruct tree models of progression for accumulative processes, such as cancer, seek to estimate causation by combining correlation and a frequentist notion of temporal priority. In this paper, we define a novel theoretical framework called CAPRESE (CAncer PRogression Extraction with Single Edges) to reconstruct such models based ...


Schierz O   2014
Recording the track of the mandibular hinge axis and consequently ascertaining the posterior determinants is one of the key requirements for accurately simulating individual oral conditions in the (virtual) articulator. The aim of this study was to determine the reliability of computerized condylar path inclination angle (CPIA) measures and to ...


Chen Jing J National Heart, Lung and Blood Institute, National Institutes of Health, 50 South Drive, Building 50, Room 3306, Bethesda, Maryland 20892,   2014
The spindle assembly checkpoint arrests mitotic progression until each kinetochore secures a stable attachment to the spindle. Despite fluctuating noise, this checkpoint remains robust and remarkably sensitive to even a single unattached kinetochore among many attached kinetochores; moreover, the checkpoint is silenced only after the final kinetochorespindle attachment. Experimental observations ...


Dostbil Zeki Z Department of Nuclear Medicine, Faculty of Medicine, Dicle University, 21280 Diyarbakir,   2014
Objectives. The measurement of mucociliary transport velocity by rhinoscintigraphy with Tc99mmacroaggregated albumin ((99m)TcMAA) is reliable measure of mucociliary clearance. The aim of this study is to assess the intratest, interobserver, and intraobserver reproducibility of nasal mucociliary transport rate (NMTR) measurement. Materials and Methods. Twentytwo subjects were evaluated to determine intratest ...


Si Weijian W Department of Information and Communication Engineering, Harbin Engineering University, Harbin 150001,   2014
A novel direction of arrival (DOA) estimation method in compressed sensing (CS) is presented, in which DOA estimation is considered as the joint sparse recovery from multiple measurement vectors (MMV). The proposed method is obtained by minimizing the modifiedbased covariance matching criterion, which is acquired by adding penalties according to ...


Aldababseh Mahmoud M Department of Electronic Engineering, AlQuds University, P.O. Box 20002, Jerusalem,   2014
We address the problem of estimating timevarying fading channels in filter bank multicarrier (FBMC/OQAM) wireless systems based on pilot symbols. The standard solution to this problem is the least square (LS) estimator or the minimum mean square error (MMSE) estimator with possible adaptive implementation using recursive least square (RLS) algorithm ...


Yohannes S   2014
The association between physiologically dependent pharmacokinetic parameters (CL(B), T1/2beta, Vd(ss)) of marbofloxacin and body weight was studied in eight animal species based on allometric equation Y = aWb, where 'Y' is the pharmacokinetic parameter, 'W' is body weight, 'a' is allometric coefficient (intercept) and 'b' is the exponent that describes ...


Mondani Hernan H Department of Sociology, Stockholm University, Stockholm,   2014
Organizational growth processes have consistently been shown to exhibit a fatterthanGaussian growthrate distribution in a variety of settings. Long periods of relatively small changes are interrupted by sudden changes in all size scales. This kind of extreme events can have important consequences for the development of biological and socioeconomic systems. ...


Boyer Sebastien S MIVEGEC, Institut de Recherche pour le Developpement (IRD) UMR 224, Centre National de la Recherche Scientifique (CNRS 5290), Universités Montpellier 1 and 2, Montpellier, France; Centre de Recherche et de Veille sur les Maladies Emergentes dans l'Océan Indien (CRVOI), Sainte Clotilde, La Reunion Island, France; Unité d'Entomologie Médicale, Institut Pasteur de Madagascar, Antananarivo,   2014
Following the 2006 Chikungunya disease in La Reunion, questions were raised concerning the monitoring survey of Aedes albopictus populations and the entomological indexes used to evaluate population abundance. The objectives of the present study were to determine reliable productivity indexes using a quantitative method to improve entomological surveys and mosquito ...


Alves Gelio G National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of   2014
Metaanalysis methods that combine [Formula: see text]values into a single unified [Formula: see text]value are frequently employed to improve confidence in hypothesis testing. An assumption made by most metaanalysis methods is that the [Formula: see text]values to be combined are independent, which may not always be true. To investigate the ...


Ke Shengnan S School of Software, Jiangxi Normal University, Nanchang 330022, China.   2014
In recent years, there has been tremendous growth in the field of indoor and outdoor positioning sensors continuously producing huge volumes of trajectory data that has been used in many fields such as locationbased services or location intelligence. Trajectory data is massively increased and semantically complicated, which poses a great ...


Khan Yasir Y Department of Mathematics, Zhejiang University, Hangzhou 310027,   2014
The purpose of this paper is to employ an alternative approach to reconstruct the standard variational iteration algorithm II proposed by He, including Lagrange multiplier, and to give a simpler formulation of Adomian decomposition and modified Adomian decomposition method in terms of newly proposed variational iteration methodII (VIM). Through careful ...


Li Wenzan W State Key Laboratory of Urban and Regional Ecology, Research Center for EcoEnvironmental Sciences, Chinese Academy of Sciences, Beijing, China Email: xyli@rcees.ac.cn; University of Chinese Academy of Sciences, Beijing,   2014
Identification of nonpoint source (NPS) pollution is a great challenge in the North China Plain, which has modified rivers and insufficient data. In this study, a simple and reasonable method was developed to estimate the total nitrogen (TN) load in rural areas of the North China Plain. The method was ...


Christensen Birgitte H   2014
Increased navicular drop is associated with increased risk of lower extremity overuse injuries and foot orthoses are often prescribed to reduce navicular drop. For laboratory studies, transparent shoes may be used to monitor the effect of orthoses but no clinically feasible methods exist. We have developed a stretchsensor that allows ...


Santolaria Jorge J 0000000173160003 Departamento de Ingeniería de Diseño y Fabricación, Edificio Torres Quevedo, EINA, Universidad de Zaragoza, 50018 Zaragoza,   2014
A new procedure for the calibration of an articulated arm coordinate measuring machine (AACMM) is presented in this paper. First, a selfcalibration algorithm of four laser trackers (LTs) is developed. The spatial localization of a retroreflector target, placed in different positions within the workspace, is determined by means of a ...


Liu Yan Xia YX College of Automation, Beijing Union University, Beijing 100101, China.   2014
A complete error calibration model with 12 independent parameters is established by analyzing the threeaxis magnetometer error mechanism. The said model conforms to an ellipsoid restriction, the parameters of the ellipsoid equation are estimated, and the ellipsoid coefficient matrix is derived. However, the calibration matrix cannot be determined completely, as ...


Wu Jibo J 0000000162336704 Department of Mathematics and KLDAIP, Chongqing University of Arts and Sciences, Chongqing 402160,   2014
We introduce an unbiased twoparameter estimator based on prior information and twoparameter estimator proposed by Özkale and Kaçıranlar, 2007. Then we discuss its properties and our results show that the new estimator is better than the twoparameter estimator, the ordinary least squares estimator, and explain the almost unbiased twoparameter estimator ...


Zheng Wenjun W Department of Physics, University at Buffalo, Buffalo, New York, USA. Electronic address:   2014
To circumvent the difficulty of directly solving highresolution biomolecular structures, lowresolution structural data from Cryoelectron microscopy (EM) and small angle solution Xray scattering (SAXS) are increasingly used to explore multiple conformational states of biomolecular assemblies. One promising venue to obtain highresolution structural models from lowresolution data is via dataconstrained flexible ...


Gupta Maneesha M Netaji Subhash Institute of Technology, Sector 3, Dwarka, New Delhi 110078,   2014
Different evolutionary algorithms (EAs), namely, particle swarm optimization (PSO), genetic algorithm (GA), and PSOGA hybrid optimization, have been used to optimize digital differential operators so that these can be better fitted to exemplify their new improved fractional order differentiator counterparts. First, the paper aims to provide efficient 2nd and 3rd ...


Abdul Razak Fatimah F Complexity & Networks Group and Department of Mathematics, Imperial College London, London, United Kingdom; School of Mathematical Sciences, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor,   2014
'Causal' direction is of great importance when dealing with complex systems. Often big volumes of data in the form of time series are available and it is important to develop methods that can inform about possible causal connections between the different observables. Here we investigate the ability of the Transfer ...


Magis David D Department of Education (B32), University of Liege, Boulevard du Rectorat 5, 4000 Liege, Belgium,   2014
The Infit mean square W and the Outfit mean square U are commonly used person fit indexes under Rasch measurement. However, they suffer from two major weaknesses. First, their asymptotic distribution is usually derived by assuming that the true ability levels are known. Second, such distributions are even not clearly ...


Avila Agustín Brau AB Department of Design and Manufacturing Engineering, University of Zaragoza, María de Luna 3, Zaragoza 50018, Spain.   2014
During the last years, the use of Portable Coordinate Measuring Machines (PCMMs) in industry has increased considerably, mostly due to their flexibility for accomplishing inline measuring tasks as well as their reduced costs and operational advantages as compared to traditional coordinate measuring machines (CMMs). However, their operation has a significant ...


Etiene Tiago   2014
We propose an approach for verification of volume rendering correctness based on an analysis of the volume rendering integral, the basis of most DVR algorithms. With respect to the most common discretization of this continuous model (Riemann summation), we make assumptions about the impact of parameter changes on the rendered ...


Ni Yang Y Department of Statistics, Rice University, Houston, Texas,   2014
Rapid development of genomewide profiling technologies has made it possible to conduct integrative analysis on genomic data from multiple platforms. In this study, we develop a novel integrative Bayesian network approach to investigate the relationships between genetic and epigenetic alterations as well as how these mutations affect a patient's clinical ...


MoolanFeroze Oliver   2014
Accurate automated segmentation of the right ventricle is difficult due in part to the large shape variation found between patients. We explore the ability of manifold learning based shape models to represent the complexity of shape variation found within an RV dataset as compared to a typical PCA based model. ...


Webb Benjamin B University of California at San Francisco, San Francisco,   2014
Functional characterization of a protein sequence is one of the most frequent problems in biology. This task is usually facilitated by accurate threedimensional (3D) structure of the studied protein. In the absence of an experimentally determined structure, comparative or homology modeling can sometimes provide a useful 3D model for a ...


Kane Emily A EA Department of Biology, University of California, , 900 University Avenue, Riverside, CA 92521,   2014
Prey capture is critical for survival, and differences in correctly positioning and timing a strike (accuracy) are likely related to variation in capture success. However, an ability to quantify accuracy under natural conditions, particularly for fishes, is lacking. We developed a predictive model of suction hydrodynamics and applied it to ...


He Daojiang D 0000000211524980 Department of Statistics, Anhui Normal University, Wuhu 241000,   2014
We propose a new estimator to combat the multicollinearity in the linear model when there are stochastic linear restrictions on the regression coefficients. The new estimator is constructed by combining the ordinary mixed estimator (OME) and the principal components regression (PCR) estimator, which is called the stochastic restricted principal components ...


Spiga Enrico E Laboratory for Biomolecular Modeling, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de LausanneEPFL, Lausanne,   2014
Data reporting on structure and dynamics of cellular constituents are growing with increasing pace enabling, as never before, the understanding of fine mechanistic aspects of biological systems and providing the possibility to affect them in controlled ways. Nonetheless, experimental techniques do not yet allow for an arbitrary level of resolution ...


Mei Gang G 0000000300265423 Institute of Earth and Environmental Science, University of Freiburg, Albertstr. 23B, 79104 Freiburg im Breisgau,   2014
Several key techniques in 3D geological modeling including planar mesh generation, spatial interpolation, and surface intersection are summarized in this paper. Note that these techniques are generic and widely used in various applications but play a key role in 3D geological modeling. There are two essential procedures in 3D geological ...


Kuhapatanakul Kantaphon K Department of Mathematics, Faculty of Science, Kasetsart University, Bangkok,   2014
Recently Holliday and Komatsu extended the results of Ohtsuka and Nakamura on reciprocal sums of Fibonacci numbers to reciprocal sums of generalized Fibonacci numbers. The aim of this work is to give similar results for the alternating sums of reciprocals of the generalized Fibonacci numbers with indices in arithmetic progression. ...


  2014
[This corrects the article DOI: 10.1371/journal.pone.0099063.].


Kar Parimal P Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan,   2014
Computer simulations are indispensable tools for studying the structure and dynamics of biological macromolecules. Biochemical processes occur on different scales of length and time. Atomistic simulations cannot cover the relevant spatiotemporal scales at which the cellular processes occur. To address this challenge, coarsegrained (CG) modeling of the biological systems is ...


Kunisawa Takayuki T Surgical Operation Department, Asahikawa Medical University Hospital, Hokkaido,   2014
Olprinone decreases the cardiac preload and/or afterload because of its vasodilatory effect and increases myocardial contractility by inhibiting phosphodiesterase III. The objective of this study was to characterize the population pharmacokinetics of olprinone after a single continuous infusion in healthy male volunteers. We used 500 plasma concentration data points collected ...


< 4 5 6 7 8 9 10 11 12 13 14 > 