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Results 201 - 250 of 3187
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Jung Kee Wook KW Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, - - 2014
Anorectal manometry with simulated evacuation (SE) has limited applicability in predicting balloon expulsion (BE) test results. The newly developed high-resolution anorectal manometry (HRAM) technique can yield spatiotemporal plots with three-dimensional pressurization. We aimed to define new parameters based on three-dimensional integrated pressurized volume (IPV) for predicting the BE test results ...
Klein Christian - - 2014
Currently, the metatarsophalangeal angle (hallux valgus angle) is measured based on radiographic images. However, using X-ray examinations for epidemiological or screening purposes would be unethical, especially in children. For this reason it is discussed to measure the hallux valgus angle of the margo medialis pedis (medial border of the foot) ...
Pan Jianxin J School of Mathematics, The University of Manchester, Oxford Road, Manchester M13 9PL, - - 2014
In tumour xenograft experiments, treatment regimens are administered, and the tumour volume of each individual is measured repeatedly over time. Survival data are recorded because of the death of some individuals during the observation period. Also, cure data are observed because of a portion of individuals who are completely cured ...
Achard Frédéric F Joint Research Centre of the European Commission, Institute for Environment and Sustainability, TP 440, 21027, Ispra, VA, - - 2014
We estimate changes in forest cover (deforestation and forest regrowth) in the tropics for the two last decades (1990-2000 and 2000-2010) based on a sample of 4,000 units of 10km×10km size. Forest cover is interpreted from satellite imagery at 30m×30m resolution. Forest cover changes are then combined with pan-tropical biomass ...
Ni Wendy W Department of Radiology, Stanford University, Stanford, California, USA; Department of Electrical Engineering, Stanford University, Stanford, California, - - 2014
R2', the reversible component of transverse relaxation, is an important susceptibility measurement for studies of brain physiology and pathologies. In existing literature, different R2' measurement methods are used with assumption of equivalency. This study explores the choice of measurement method in healthy, young subjects at 3T. In this study, a ...
Angelis Konstantinos K Department of Genetics, Evolution and Environment, University College London, United - - 2014
The nonsynonymous/synonymous rate ratio (ω = dN/dS) is an important measure of the mode and strength of natural selection acting on nonsynonymous mutations in protein-coding genes. The simplest such analysis is the estimation of the dN/dS ratio using two sequences. Both heuristic counting methods and the maximum likelihood (ML) method ...
Schoubben Aurélie A Dipartimento di Scienze Farmaceutiche, Universit degli Studi di Perugia, Via del Liceo 1, Perugia 06123, Italy. Electronic address: - - 2014
The aim of the work was to produce inhalable capreomycin powders using a novel spray-drying technology. A 2(3) factorial design was used to individuate the best working conditions. The maximum desirability was identified at the smallest mean volume diameter (dv) and span, and the highest yield. Powders were characterized for ...
Fu Zening - - 2014
Time-varying covariance is an important metric to measure the statistical dependence between non-stationary biological processes. Time-varying covariance is conventionally estimated from short-time data segments within a window having a certain bandwidth, but it is difficult to choose an appropriate bandwidth to estimate covariance with different degrees of non-stationarity. This paper ...
Jilek K K National Radiation Protection Institute, Bartoškova 28, 140 00 Prague, Czech - - 2014
In autumn 2010, an outdoor measuring station for measurement of atmospheric radon, gamma equivalent dose rate in the range of 100 nSv h(-1)-1 Sv h(-1) and proper meteorological parameters such as thermal air gradient, relative air humidity, wind speed and direction and solar radiation intensity was built in the area ...
Bouma Andrea A Department of Food Science and Technology, Oregon State University, Corvallis - - 2014
Lack of valid economic data for artisan cheese making is a serious impediment to developing a realistic business plan and obtaining financing. The objective of this study was to determine approximate start-up and operating costs for an artisan cheese company. In addition, values are provided for the required size of ...
Rees A A Clinic for Animal Reproduction, Faculty of Veterinary Medicine, Freie Universität Berlin, Koenigsweg 65, 14163 Berlin, - - 2014
Swelling of the mammary gland is an important health status sign for clinical exploration and palpation is a routine diagnostic tool for mastitis detection in dairy cows. Data on repeatability or validity of specific methods of udder palpation are rare. The overall objective was to study the validity of estimates ...
Jain Lokesh - - 2014
The purpose of this research was to evaluate implications of choosing a statistical or biological correlation structure on model selection and parameter estimation. were performed with and without biological (weight as a common covariate) or statistical (off diagonal element in omega matrix) correlation between clearance (CL) and volume of distribution ...
Mahakkanukrauh Pasuk P Department of Anatomy, Faculty of Medicine, Chiang Mai University, 50120, - - 2014
Previous research on sex estimation from the tarsals has shown that the talus is the most sexually dimorphic tarsal bone in most populations. In order to assess the sexing potential of the talus in a Thai population, 252 skeletons (126 male, 126 female) from the Chiang Mai University Skeletal Collection ...
Arslan Hakan H Department of Agricultural Structures and Irrigation, Faculty of Agriculture, Ondokuz Mayis University, 55139, Samsun, Turkey, - - 2014
Groundwater level plays a significant role in coastal plains. Heavy pumping and excessive use of near-coast groundwater can increase the intrusion of seawater into the aquifers. In the present study, groundwater levels were measured at 59 groundwater wells at different times during pre- and post-irrigation seasons (April and September of ...
Dong Zhichao - - 2014
Numerical simulation of subaperture tool influence functions (TIF) is widely known as a critical procedure in computer-controlled optical surfacing. However, it may lack practicability in engineering because the emulation TIF (e-TIF) has some discrepancy with the practical TIF (p-TIF), and the removal rate could not be predicted by simulations. Prior ...
Orczykowska Magdalena M Łódź Univ. of Technology, Faculty of Process and Environmental Engineering, Dept. of Chemical Engineering, ul, Wólczańska 213, 90-924, Łódź, - - 2014
The effect of concentration of carbohydrates on viscoelastic properties of corn and rice starch is discussed in this paper. The texture of starch pastes was estimated using a fractional rheological linear standard solid model. Rheological parameters of the model were identified and their changes for different values of sugar concentrations ...
Cerón-Carrasco José Pedro - - 2014
Empirical parameters of solvents describing their hydrogen-bond (HB) acidity (e. g. the Kamlet-Taft α parameter) are often difficult to determine for new solvents because they are not directly related to a single definition process. Here, we propose a simple method based on one probe, the betaine dye 30, and one ...
Davies Gemma G Lancaster Environment Centre, Lancaster University, Lancaster, Lancashire, LA1 4YQ, UK. Electronic address: - - 2014
Individual exposure to air pollution depends not only upon pollution concentrations in the surrounding environment, but also on the volume of air inhaled, which is determined by an individual's physiology and activity level. This study focuses on journey-time exposure, using network analysis in a GIS environment to identify pedestrian routes ...
Piccoli Antonio A Department of Medicine, University of Padova, Padova, - - 2014
Both single-frequency bioimpedance and multiple-frequency spectroscopy are equally accurate in measuring total-body water and intracellular fluid. Estimates are consistent at a population level but not at the individual level, because of wide limits of agreement. There is no real 'gold standard' method providing estimates with absolute accuracy (in liters). Bioelectrical ...
Zhou D D Quantitative Clinical Pharmacology, AstraZeneca LP, Wilmington, DE, - - 2014
AZD7325 is a selective gamma-amino-butyric acid (GABAA )α2, 3 receptor modulator. The aims of this analysis were to develop population pharmacokinetic (PPK) models of AZD7325 and midazolam and to assess the induction effect of AZD7325 on CYP3A4 with midazolam as a substrate. Drug-drug interaction data of AZD7325 and midazolam from ...
Honda Michitaka - - 2014
Several improvements were implemented in the edge method of presampled modulation transfer function measurements (MTFs). The estimation technique for edge angle was newly developed by applying an algorithm for principal components analysis. The error in the estimation was statistically confirmed to be less than 0.01 even in the presence of ...
Stijak Lazar - - 2014
The tibial slope is one of the most frequently cited anatomical causes of anterior cruciate ligament trauma. The aim of this study was to determine the possibility of direct measuring of the tibial slope of the knee without prior soft tissue dissection in cadavers. Measurement was performed on the two ...
Kumar Sudhir S Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, CTCRS, Anushaktinagar, Maharashtra, - - 2014
Verification of the strength of high dose rate (HDR) (192)Ir brachytherapy sources on receipt from the vendor is an important component of institutional quality assurance program. Either reference air-kerma rate (RAKR) or air-kerma strength (AKS) is the recommended quantity to specify the strength of gamma-emitting brachytherapy sources. The use of ...
Tang Niansheng N Department of Statistics, Yunnan University, Kunming 650091, - - 2014
We develop an empirical likelihood (EL) inference on parameters in generalized estimating equations with nonignorably missing response data. We consider an exponential tilting model for the nonignorably missing mechanism, and propose modified estimating equations by imputing missing data through a kernel regression method. We establish some asymptotic properties of the ...
Haegeman Bart B Centre for Biodiversity Theory and Modelling, Centre National de la Recherche Scientifique, Moulis, France, - - 2014
Lalande et al. (Microb. Ecol. 66(3):647-658, 2013) introduced a promising approach to quantify microbial diversity from fingerprinting profiles. Their analysis is based on extrapolating the abundance of the phylotypes detectable in a fingerprint towards the rare phylotypes of the community. By considering a set of reconstructed communities, Lalande et al. ...
Giachetti Andrea - - 2014
In this paper we present an automatic tool for estimating geometrical parameters from 3D human scans independent on pose, and robustly against topological noise. It is based on an automatic segmentation of body parts exploiting curve skeleton processing and ad hoc heuristics able to remove problems due to different acquisition ...
Guy Romain R UR 341 Mathématiques et Informatique Appliquées, INRA, Jouy-en-Josas, France, - - 2014
Multidimensional continuous-time Markov jump processes [Formula: see text] on [Formula: see text] form a usual set-up for modeling [Formula: see text]-like epidemics. However, when facing incomplete epidemic data, inference based on [Formula: see text] is not easy to be achieved. Here, we start building a new framework for the estimation ...
Duryea Jeffrey J Brigham and Women's Hosp. / Harvard Medical School, Boston, - - 2014
To assess the responsiveness and reader time of a novel semi-automated tool to detect knee cartilage loss over two years in subjects with knee OA. 122 subjects from the OAI Progression Cohort were selected. A reader used the software method to segment cartilage on DESS scans in the medial compartment ...
Shaffer Dennis M - - 2014
People verbally overestimate hill slant by approximately 15° to 25°, whereas manual estimates (e.g., palm board measures) are thought to be more accurate. The relative accuracy of palm boards has contributed to the widely cited theoretical claim that they tap into an accurate, but unconscious, motor representation of locomotor space. ...
Di Ieva Antonio A 1Division of Neurosurgery, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada 2Division of Neuroradiology, Toronto Western Hospital, Toronto, Ontario, Canada 3Department of Radiation Oncology, Princess Margaret Cancer Centre, Toronto, Ontario, Canada 4Division of Neurosurgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada 5Department of Radiation Oncology, Odette Cancer Centre, Toronto, Ontario, Canada 6University of Toronto, Toronto, Ontario, - - 2014
Neuroimaging is the gold standard for diagnosis and follow-up of brain arteriovenous malformations (bAVMs), but no objective parameter has been validated for the assessment of the nidus angioarchitecture and for prognostication following treatment. The fractal dimension (FD), which is a mathematical parameter able to quantify the space-filling properties and roughness ...
Keebler Joseph R JR Wichita State University, Wichita, Kansas, - - 2014
TeamSTEPPS (Team Strategies and Tools to Enhance Performance and Patient Safety) is a team-training intervention which shows promise in aiding the mitigation of medical errors. This article examines the construct validity of the TeamSTEPPS Teamwork Perceptions Questionnaire (T-TPQ), a self-report survey that examines multiple dimensions of perceptions of teamwork within ...
Altini Marco - - 2014
Several methods to estimate Energy Expenditure (EE) using body-worn sensors exist, however quantifications of the differences in estimation error are missing. In this paper, we compare three prevalent EE estimation methods and five body locations to provide a basis for selecting among methods, sensors number and positioning. We considered (a) ...
Beyramysoltan Samira S Institute of Process Engineering, Faculty of Engineering, University of Szeged, Moszkvai krt. 5-7, Szeged H-6725, Hungary; Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P.O. Box 45195-1159, Zanjan, - - 2014
Analytical self-modeling curve resolution (SMCR) methods resolve data sets to a range of feasible solutions using only non-negative constraints. The Lawton-Sylvestre method was the first direct method to analyze a two-component system. It was generalized as a Borgen plot for determining the feasible regions in three-component systems. It seems that ...
Ahlgren André A Department of Medical Radiation Physics, Skåne University Hospital, Lund University, Barngatan 2B, 221 85, Lund, Sweden, - - 2014
The aim of this study was to demonstrate a new automatic brain segmentation method in magnetic resonance imaging (MRI). The signal of a spoiled gradient-recalled echo (SPGR) sequence acquired with multiple flip angles was used to map T1, and a subsequent fit of a multi-compartment model yielded parametric maps of ...
Souilah Rachid R Laboratoire de Recherche sur Les Produits Bioactifs et Valorisation de la Biomasse, Département de Chimie, Ecole Normale Supérieure de Kouba Algiers, - - 2014
This work aims to evaluate starch digestion in whole sorghum grains. Nine sorghum cultivars were sampled from the Sahara of Algeria. The structural characteristics of sorghum grains were measured. Total starch (TS) varied between 67.67% and 74.82%, digestible starch (DS) between 64.34% and 69.70%, and resistant starch (RS) ranged from ...
Ono Hirotaka - - 2014
The method for estimating the gain coefficient spectrum of an erbium-doped fiber (EDF) is proposed and demonstrated experimentally. The method employs a net gain-loss measurement that uses the I4<sub>13/2</sub> level pumping of the EDF and the McCumber relation. A formula used to obtain the quotient of the gain and loss ...
Kaur Navreet N IKBM, Norwegian University of Life Sciences, Ås, Norway. Electronic address: - - 2014
This paper deals with the statistical interpretation of DNA mixture evidence. The conventional methods used in forensic casework today use something like 16 STR-markers. Power can be increased by rather using SNP-markers. New statistical methods are then needed, and we present a regression framework. The basic idea is that the ...
Watts Richard R From the Departments of Radiology (R.W., C.G.F., J.P.N.), Surgery (A.T., K.V.), and Neurology (C.G.F.), University of Vermont, Given Medical Building E301, 89 Beaumont Ave, Burlington, VT - - 2014
Purpose To investigate the extent of bias in a clinical study involving "pothole analysis" of diffusion-tensor imaging (DTI) data used to quantify white matter lesion load in diseases with a heterogeneous spatial distribution of pathologic findings, such as mild traumatic brain injury (TBI), and create a mathematical model of the ...
Kang Sang-Hoon SH Faculty, Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang; Clinical Associate Professor, Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Republic of Korea. Electronic address: - - 2014
Stereolithographic guidance, increasingly used in orthognathic surgery, has not been completely verified for genioplasty. This study compared the accuracy of manual measurement with that of a stereolithographic guide in vitro. Thirty rapid prototype (RP) mandibular models (15 pairs) were included in the experimental (stereolithographic) and control (manual) groups (15 each). Surgical ...
Nénon Sébastien S Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale, University of Namur, rue de Bruxelles, 61, B-5000 Namur, Belgium. sebastien.nenon@unamur.be - - 2014
The use of physically-adjusted range-separated parameter (μ) together with long-range corrected exchange-correlation functionals is shown not to be reliable for calculating the polarizability (α) and the second hyperpolarizability (γ) of large π-conjugated systems. This statement has been substantiated by calculating the polarizability and the second hyperpolarizability of increasingly large polydiacetylene ...
Luo Shezhou - - 2014
The fraction of absorbed photosynthetically active radiation (FPAR) is a key parameter for ecosystem modeling, crop growth monitoring and yield prediction. Ground-based FPAR measurements are time consuming and labor intensive. Remote sensing provides an alternative method to obtain repeated, rapid and inexpensive estimates of FPAR over large areas. LiDAR is ...
Zhao Zixin - - 2014
We propose an elliptical sub-aperture stitching (ESAS) method to measure the aspheric surfaces. In our method, the non-null configuration is used to overcome the disadvantages of the null testing. By adding the dynamic tilt, the different local nearly null fringe patterns are obtained and the corresponding phase data in the ...
van de Maat G H GH Image Sciences Institute, University Medical Center Utrecht, Utrecht, The - - 2014
To present a new method, S0 estimation of the free induction decay combined with a single spin echo measurement (SOFIDSE), that enables simultaneous measurements of R2 *, R2 , and R2 ' in order to quantify the local concentration of holmium microspheres (Ho-MS) for radioembolization. SOFIDSE estimates R2 * and ...
Wang Chun C University of Minnesota, 75 East River Road, Elliott Hall, N658, Minneapolis, MN, 55455, USA, - - 2014
Making inferences from IRT-based test scores requires accurate and reliable methods of person parameter estimation. Given an already calibrated set of item parameters, the latent trait could be estimated either via maximum likelihood estimation (MLE) or using Bayesian methods such as maximum a posteriori (MAP) estimation or expected a posteriori ...
de Oliveira Rodrigo Rocha RR Grupo de Pesquisa em Quimiometria Aplicada, Instituto de Química, Universidade Federal do Rio Grande do Norte, Av. Senador Salgado Filho 3000, Natal, CEP 59078-970, Brazil; Chemometrics Group, Department of Analytical Chemistry, Universitat de Barcelona, Diagonal 645, Barcelona 08028, - - 2014
This study describes two applications of a variant of the multivariate curve resolution alternating least squares (MCR-ALS) method with a correlation constraint. The first application describes the use of MCR-ALS for the determination of biodiesel concentrations in biodiesel blends using near infrared (NIR) spectroscopic data. In the second application, the ...
Rughoo L L Laboratoire de Biométrie et Biologie Evolutive, CNRS UMR 5558, Université de Lyon, 69622, Villeurbanne, - - 2014
Amikacin use is difficult because of its narrow therapeutic and its pharmacokinetic variability. This variability of amikacin is not well known. To adapt amikacin the physician assumes that there is a linear and continuous relation between the volume of distribution and the body weight. The objective of our study was ...
Xie S-Q SQ Section on Statistical Genomics, State Key Laboratory of Crop Genetics and Germplasm Enhancement/Collaborative Innovation Center for Modern Crop Production, Department of Crop Genetics and Breeding, College of Agriculture, Nanjing Agricultural University, Nanjing, - - 2014
Epistasis has been frequently observed in all types of mapping populations. However, relatively little is known about the effect of epistatic distorted markers on linkage group construction. In this study, a new approach was proposed to correct the recombination fraction between epistatic distorted markers in backcross and F2 populations under ...
Mullarney Matthew P MP Department of Drug Product Design, Pfizer Inc. , Groton, CT , - - 2014
Abstract A method has been developed using commonly available data for estimating the number of tablets or hard shell capsules that can be filled into bottles. The single unit volumes of conventional pharmaceutical biconvex tablets and capsules can be calculated from simple geometric relationships, which then can be used to ...
Weiss Michael M Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Naresuan, University, Phitsanulok, Thailand; Department of Pharmacology, Martin Luther University Halle-Wittenberg, Halle, Germany. Electronic address: - - 2014
A sum of two inverse Gaussian functions is proposed as a highly flexible empirical model for fitting of in vitro dissolution profiles. The model was applied to quantitatively describe theophylline release from effervescent multi-layer coated floating tablets containing different amounts of the anti-tacking agents talc or glyceryl monostearate. Model parameters ...
Hall Justin M JM Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee-Campbell Clinic, Memphis, TN, - - 2014
We compared accuracy and reliability of a traditional method of measurement (most cephalad vertebral spinous process that can be reached by a patient with the extended thumb) to estimates made with the shoulder in abduction to determine if there were differences between the two methods. Six physicians with fellowship training ...
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