Results 301  350 of 3074  
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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 ...


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 ...


Szpala Stanislaw S BC Cancer Agency (Fraser Valley Centre).   2014
Partial transmission through rounded leaf ends of Varian multileaf collimators (MLC) is accounted for with a parameter called the dosimetric leaf gap (DLG). Verification of the value of the DLG is needed when the dose delivery is accompanied by gantry rotation in VMAT plans. We compared the doses measured with ...


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 ...


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 ...


Marković Dana D DD 0000000260335457 Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade,   2014
Numerous regression approaches to isotherm parameters estimation appear in the literature. The real insight into the proper modeling pattern can be achieved only by testing methods on a very big number of cases. Experimentally, it cannot be done in a reasonable time, so the Monte Carlo simulation method was applied. ...


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 ...


Park NoWook NW 0000000297783624 Department of Geoinformatic Engineering, Inha University, Incheon 402751, Republic of   2014
This paper compares the predictive performance of different geostatistical kriging algorithms for intertidal surface sediment facies mapping using grain size data. Indicator kriging, which maps facies types from conditional probabilities of predefined facies types, is first considered. In the second approach, grain size fractions are first predicted using cokriging and ...


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 ...


Lotfi Taher T Department of Mathematics, Hamedan Branch, Islamic Azad University, Hamedan 68138,   2014
It is attempted to present an efficient and free derivative class of Steffensenlike methods for solving nonlinear equations. To this end, firstly, we construct an optimal eighthorder threestep uniparameter without memory of iterative methods. Then the selfaccelerator parameter is estimated using Newton's interpolation in such a way that it improves ...


Güthlin Denise D Chair of Wildlife Ecology and Management, University of Freiburg, Freiburg, BadenWürttemberg,   2014
Due to time and financial constraints indices are often used to obtain landscapescale estimates of relative species abundance. Using two different field methods and comparing the results can help to detect possible bias or a non monotonic relationship between the index and the true abundance, providing more reliable results. We ...


Liu Yang Y 0000000182180196 School of Mathematical Sciences, Inner Mongolia University, Hohhot 010021,   2014
A kind of new mixed element method for timefractional partial differential equations is studied. The Caputofractional derivative of time direction is approximated by twostep difference method and the spatial direction is discretized by a new mixed element method, whose gradient belongs to the simple (L (2)(Ω)(2)) space replacing the complex ...


Joseph Leonard H LH Department of Physical Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Physiotherapy Program, School of Rehabilitation Sciences, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur,   2014
Objective: The aim of this study was to investigate the intra and interrater reliability of ultrasonography (US) to measure anterior translation of the humeral head (ATHH) among healthy subjects and patients with sacroiliac joint dysfunction. Methods: The study included a total of 22 shoulder joints from 11 subjects. Six subjects ...


Feischl Michael M Institute for Analysis and Scientific Computing, Vienna University of Technology, Wiedner Hauptstr. 810/E101/4, 1040 Wien,   2014
In the context of the adaptive finite element method (FEM), ZZerror estimators named after Zienkiewicz and Zhu (1987) [52] are mathematically wellestablished and widely used in practice. In this work, we propose and analyze ZZtype error estimators for the adaptive boundary element method (BEM). We consider weakly singular and hypersingular ...


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 ...


Decimal fraction representations are not distinct from natural number representations  evidence ...
Huber Stefan S Knowledge Media Research Center, Tuebingen Germany ; Department of Psychology, Eberhard Karls University, Tuebingen   2014
Decimal fractions comply with the base10 notational system of natural Arabic numbers. Nevertheless, recent research suggested that decimal fractions may be represented differently than natural numbers because two number processing effects (i.e., semantic interference and compatibility effects) differed in their size between decimal fractions and natural numbers. In the present ...


Ding Risheng R Center for Agricultural Water Research in China, China Agricultural University, Beijing,   2014
The dualsource ShuttleworthWallace model has been widely used to estimate and partition crop evapotranspiration (λET). Canopy stomatal conductance (Gsc), an essential parameter of the model, is often calculated by scaling up leaf stomatal conductance, considering the canopy as one single leaf in a socalled "bigleaf" model. However, Gsc can be ...


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 ...


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 ...


Li Yingsong Y 0000000224506028 Graduate School of Engineering, Kochi University of Technology, Kamishi 7828502,   2014
To make use of the sparsity property of broadband multipath wireless communication channels, we mathematically propose an l p normconstrained proportionate normalized leastmeansquare (LPPNLMS) sparse channel estimation algorithm. A general l p norm is weighted by the gain matrix and is incorporated into the cost function of the proportionate normalized ...


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 ...


Caldarelli Guido G IMT Institute for Advanced Studies, Lucca, Italy; Istituto dei Sistemi Complessi (ISC), Department of Physics, Università "Sapienza", Roma, Italy; London Institute for Mathematical Sciences, London, United Kingdom; Linkalab, Complex Systems Computational Laboratory, Cagliari,   2014
In this paper we present an analysis of the behavior of Italian Twitter users during national political elections. We monitor the volumes of the tweets related to the leaders of the various political parties and we compare them to the elections results. Furthermore, we study the topics that are associated ...


Smith Jeremy D JD School of Sport & Exercise Science, University of Northern Colorado;   2014
The purpose of this study was twofold: 1) demonstrate a technique that can be used to directly estimate the inertial properties of a belowknee prosthesis, and 2) contrast the effects of the proposed technique and that of using intact limb inertial properties on joint kinetic estimates during walking in unilateral, ...


Dai Zhenxue Z Los Alamos National Laboratory, Los Alamos, NM   2014
Carbon sequestration in geologic reservoirs is an important approach for mitigating greenhouse gases emissions to the atmosphere. This study first develops an integrated Monte Carlo method for simulating CO2 and brine leakage from carbon sequestration and subsequent geochemical interactions in shallow aquifers. Then, we estimate probability distributions of five risk ...


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 ...


Duda Jeffrey T JT Penn Image Computing and Science Laboratory, Department of Radiology, University of Pennsylvania Philadelphia, PA,   2014
Recent interest in human brain connectivity has led to the application of graph theoretical analysis to human brain structural networks, in particular white matter connectivity inferred from diffusion imaging and fiber tractography. While these methods have been used to study a variety of patient populations, there has been less examination ...


Lang SongYun SY Chongqing Museum of Natural History, Beibei, Chongqing, 400700, China.; Email:   2014
Joicey & Talbot (1921) described 2 new species and 19 new subspecies of butterflies and one new subspecies of Zygaenidae from Hainan Island, China. The specimens studied by Joicey & Talbot from Hainan were obtained by Charles Talbot Bowring (18621932) between the years 1918 and 1920. Bowring, who also used ...


Chi Peter B PB Department of Statistics, California Polytechnic State University , San Luis Obispo, CA ,   2014
We examine heritability estimation of an ordinal trait for osteoarthritis, using a population of pigtailed macaques from the Washington National Primate Research Center (WaNPRC). This estimation is nontrivial, as the data consist of ordinal measurements on 16 intervertebral spaces throughout each macaque's spinal cord, with many missing values. We examine ...


Likhitrakarn Natdanai N Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.; Email:   2014
At the present, the millipede fauna of Laos comprises only 34 species from 20 genera, 13 families and 7 orders. These counts certainly represent but a minor fraction of the country's real diversity of Diplopoda even at the ordinal level, let alone at lower ones. Based on the available information ...


Zaal Frank T J M FT Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The   2014
The classic understanding of prehension is that of coordinated reaching and grasping. An alternative view is that the grasping in prehension emerges from independently controlled individual digit movements (the doublepointing model). The current study tested this latter model in bimanual prehension: participants had to grasp an object between their two ...


Zuo Jieyu J 0000000180972173 Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada T6G   2014
When a new oral dosage form is developed, its dissolution behavior must be quantitatively analyzed. Dissolution analysis involves a comparison of the dissolution profiles and the application of mathematical models to describe the drug release pattern. This report aims to assess the application of the DDSolver, an Excel addin software ...


Steyn R R Department of Nuclear Medicine, Groote Schuur Hospital, University of Cape Town, South   2014
To determine how two software packages, supplied by Siemens and Hermes, for processing gated blood pool (GBP) studies should be used in our department and whether the use of different cameras for the acquisition of raw data influences the results. The study had two components. For the first component, 200 ...


Azmi Aqil M AM Department of Computer Science, College of Computer & Information Sciences, King Saud University, Riyadh, Saudi   2014
A major task in computational biology is the discovery of short recurring string patterns known as motifs. Most of the schemes to discover motifs are either stochastic or combinatorial in nature. Stochastic approaches do not guarantee finding the correct motifs, while the combinatorial schemes tend to have an exponential time ...


Daneshmand Saeed S Department of Geomatics Engineering, University of Calgary, Schulich School of Engineering, Position Location and Navigation (PLAN) Group, 2500 University Drive, N.W., Calgary, AB T2N 1N4, Canada.   2014
The use of global navigation satellite system (GNSS) antenna arrays for applications such as interference countermeasure, attitude determination and signaltonoise ratio (SNR) enhancement is attracting significant attention. However, precise antenna array calibration remains a major challenge. This paper proposes a new method for calibrating a GNSS antenna array using live ...


Hou Hailong H 0000000332503967 School of Mathematics and Statistics, Henan University of Science and Technology, Luoyang, Henan 471003,   2014
A graph X is said to be Endcompletelyregular (resp., Endinverse) if its endomorphism monoid End(X) is completely regular (resp., inverse). In this paper, we will show that if X[Y] is Endcompletelyregular (resp., Endinverse), then both X and Y are Endcompletelyregular (resp., Endinverse). We give several approaches to construct new Endcompletelyregular ...


Horsley Alex A Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom; Manchester Adult Cystic Fibrosis Centre, University Hospital of South Manchester, Manchester, United   2014
The Innocor device contains a highly sensitive photoacoustic gas analyser that has been used to perform multiple breath washout (MBW) measurements using very low concentrations of the tracer gas SF6. Use in smaller subjects has been restricted by the requirement for a gas analyser response time of <100 ms, in ...


Wang Wei W Key Lab of GIScience, Education Ministry of China, East China Normal University, Shanghai,   2014
The pixel purity index (PPI) and twodimensional (2D) scatter plots are two popular techniques for endmember extraction in remote sensing spectral mixture analysis, yet both suffer from one major drawback, that is, the selection of a final set of endmembers has to endure a cumbersome process of iterative visual inspection ...


Huan Mei M MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044,   2014
The paper proposed a model for estimating waiting endurance times of electric twowheelers at signalized intersections using survival analysis method. Waiting duration times were collected by video cameras and they were assigned as censored and uncensored data to distinguish between normal crossing and redlight running behavior. A Cox proportional hazard ...


Ren Yong Y College of Communication Engineering, Chongqing University, Chongqing 400044, China.   2014
This paper proposes an approach for measuring the azimuth angle and tilt angle of underground drilling tools with a MEMS threeaxis accelerometer and a threeaxis fluxgate sensor. A mathematical model of well logging attitude angle is deduced based on combining space coordinate transformations and algebraic equations. In addition, a system ...


Wang Jimin J College of Computer & Information, Hohai University, Nanjing 210098,   2014
Multivariate time series (MTS) datasets are very common in various financial, multimedia, and hydrological fields. In this paper, a dimensioncombination method is proposed to search similar sequences for MTS. Firstly, the similarity of singledimension series is calculated; then the overall similarity of the MTS is obtained by synthesizing each of ...


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.


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 ...


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 ...


Pietro Cipresso C Applied Technology for NeuroPsychology Laboratory (IRCCS Istituto Auxologico Italiano), Via Pellizza da Volpedo 41, 20149 Milan,   2014
Everyone is interested in the pursuit of happiness, but the real problem for the researchers is how to measure it. Our aim was to deeply investigate happiness measurement through biomedical signals, using psychophysiological methods to objectify the happiness experiences measurements. The classic valencearousal model of affective states to study happiness ...


Rhee MooYong MY Cardiovascular Center, Dongguk University Ilsan Hospital, 27 Donggukro, Ilsandonggu, Goyangsi, Gyeonggi 410773, Korea.   2014
The present study evaluated the reliability of equations using spot urine (SU) samples in the estimation of 24hour urine sodium excretion (24HUNa). Equations estimating 24HUNa from SU samples were derived from firstmorning SU of 101 participants (52.4 ± 11.1 years, range 2470 years). Equations developed by us and other investigators ...


  2014
[This corrects the article DOI: 10.1371/journal.pone.0089642.].


Fateen SeifEddeen K SE Department of Chemical Engineering, Cairo University, Giza 12316,   2014
The search for reliable and efficient global optimization algorithms for solving phase stability and phase equilibrium problems in applied thermodynamics is an ongoing area of research. In this study, we evaluated and compared the reliability and efficiency of eight selected natureinspired metaheuristic algorithms for solving difficult phase stability and phase ...


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 ...


Qu Zhaowei Z College of Transportation, Jilin University, Changchun 130022,   2014
To estimate the capacity of roundabouts more accurately, the priority rank of each stream is determined through the classification technique given in the Highway Capacity Manual 2010 (HCM2010), which is based on macroscopical analysis of the relationship between entry flow and circulating flow. Then a conflict matrix is established using ...


Zhu Ailing A School of Mathematical Sciences, Shandong Normal University, Jinan 250014,   2014
We present the semidiscrete and the backward Euler fully discrete discontinuous mixed covolume schemes for parabolic problems on triangular meshes. We give the error analysis of the discontinuous mixed covolume schemes and obtain optimal order error estimates in discontinuous H(div) and firstorder error estimate in L (2).


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