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Greenblum Ayala - - 2014
With widening interests in using model organisms for reverse genetic approaches and biomimmetic microrobotics, motility phenotyping of the nematode Caenorhabditis elegans is expanding across a growing array of locomotive environments. One ongoing bottleneck lies in providing users with automatic nematode segmentations of C. elegans in image sequences featuring complex and ...
Ocampo-Peñuela Natalia N Nicholas School of the Environment, Box 90328, Duke University, Durham, NC, 27708, - - 2014
We aspired to set conservation priorities in ways that lead to direct conservation actions. Very large-scale strategic mapping leads to familiar conservation priorities exemplified by biodiversity hotspots. In contrast, tactical conservation actions unfold on much smaller geographical extents and they need to reflect the habitat loss and fragmentation that have ...
Walter Jonathan A JA Department of Environmental Sciences, University of Virginia, Charlottesville, VA, 22904, USA; Blandy Experimental Farm, University of Virginia, 400 Blandy Farm Lane, Boyce, VA, 22620, - - 2014
1. Reproductive asynchrony, a temporal mismatch in reproductive maturation between an individual and potential mates, may contribute to mate-finding failure and Allee effects that influence the establishment and spread of invasive species. Variation in elevation is likely to promote variability in maturation times for species with temperature-dependent development, but it ...
Nams Vilis O VO Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Box 550, Truro, NS, B2N 5E3, - - 2014
Animal movement paths show variation in space caused by qualitative shifts in behaviours. I present a method that (1) uses both movement path data and ancillary sensor data to detect natural breakpoints in animal behaviour and (2) groups these segments into different behavioural states. The method can also combine analyses ...
Chang Violeta V Department of Computer Science, University of Chile, Beauchef 851, 4th Floor, Santiago, Chile; Laboratory for Scientific Image Analysis (SCIAN-Lab), Centro de Espermiograma Digital Asistido por Internet (CEDAI SpA), Biomedical Neuroscience Institute (BNI), Program of Anatomy and Developmental Biology (ICBM), Faculty of Medicine, University of Chile, Independencia 1027, Santiago, Chile. Electronic address: - - 2014
Semen analysis is the first step in the evaluation of an infertile couple. Within this process, an accurate and objective morphological analysis becomes more critical as it is based on the correct detection and segmentation of human sperm components. In this paper, we present an improved two-stage framework for detection ...
Asman Andrew J AJ Electrical Engineering, Vanderbilt University, Nashville, TN 37235, USA. Electronic address: - - 2014
Label fusion is a critical step in many image segmentation frameworks (e.g., multi-atlas segmentation) as it provides a mechanism for generalizing a collection of labeled examples into a single estimate of the underlying segmentation. In the multi-label case, typical label fusion algorithms treat all labels equally - fully neglecting the ...
Bajelan Soheil S Department of Biomechanics, Faculty of Mechanical Engineering, Sahand University of Technology, Tabriz, - - 2014
The human chair-rise ability reduces according to various factors such as; Age, Incidents, diseases and etc. The Sit-to-Stand (STS) movement strategy modification is a way chosen to compensate the STS inabilities.OBJECTIVE: Musculoskeletal evaluation of the effects of standing up strategy modification is beneficial for correct selection. The aim of this ...
Ishizuka W W Graduate School of Arts and Sciences, the University of Tokyo, Tokyo, - - 2014
To avoid winter frost damage, evergreen coniferous species develop cold hardiness with suitable phenology for the local climate regime. Along the elevational gradient, a genetic cline in autumn phenology is often recognised among coniferous populations, but further quantification of evolutionary adaptation related to the local environment and its responsible signals ...
Li Wenliang W Faculty of Chemistry, Northeast Normal University, Changchun, - - 2014
The selectivity of indoor pollution gases (including formaldehyde, benzene, and toluene) over N2 on a set of 37 covalent organic frameworks (COFs) was modeled by combining classical grand canonical Monte Carlo (GCMC) methods and periodic density functional theory with dispersion correction (DFT-D2). The pore volume, pore size, and the isosteric ...
Barker Jeffrey B - - 2014
Numerical finite element models of the neck have been developed to simulate occupant response and predict injury during motor vehicle collisions. However, there is a paucity of data on the response of young cervical spine segments under dynamic loading in flexion and extension, which is essential for the development or ...
Adamson Chris C Royal Childrens Hospital, 50 Flemington Road Parkville, VIC, Melbourne, 3052, Australia, - - 2014
This paper presents a fully automated pipeline for thickness profile evaluation and analysis of the human corpus callosum (CC) in 3D structural T 1-weighted magnetic resonance images. The pipeline performs the following sequence of steps: midsagittal plane extraction, CC segmentation algorithm, quality control tool, thickness profile generation, statistical analysis and ...
Taljaard Monica - - 2014
An interrupted time series design is a powerful quasi-experimental approach for evaluating effects of interventions introduced at a specific point in time. To utilize the strength of this design, a modification to standard regression analysis, such as segmented regression, is required. In segmented regression analysis, the change in intercept and/or ...
Van den Herrewegen Inge I Mobilab, Thomas More University College, - - 2014
Multi-segmental foot kinematics have been analyzed by means of optical marker-sets or by means of inertial sensors, but never by markerless dynamic 3D scanning (D3DScanning). The use of D3DScans implies a radically different approach for the construction of the multi-segment foot model: the foot anatomy is identified via the surface ...
Cheung Yiu-Ming - - 2014
This paper addresses the problem of segmenting lip region from frontal human face image. Supposing each pixel of the target image has an optimal local scale from the segmentation viewpoint, we treat the lip segmentation problem as a combination of observation scale selection and observed data classification. Accordingly, we propose ...
Bajelan Soheil S Department of Biomechanics, Faculty of Mechanical Engineering, Sahand University of Technology, Tabriz, - - 2014
The human chair-rise ability reduces according to various factors such as; Age, Incidents, diseases and etc. The Sit-to-Stand (STS) movement strategy modification is a way chosen to compensate the STS inabilities. Musculoskeletal evaluation of the effects of standing up strategy modification is beneficial for correct selection. The aim of this ...
Li Hongliang - - 2014
In this paper, we improve co-segmentation performance by repairing bad segments based on their quality evaluation and segment propagation. Starting from co-segmentation results of the existing cosegmentation method, we first perform co-segmentation quality evaluation to score each segment. Good segments can be filter out based on the scores. Then, a ...
Larsen Peter E PE Argonne National Laboratory, Biosciences Division, 9700 South Cass Avenue, Argonne, IL 60439, U.S.A. Electronic address: - - 2014
Rising atmospheric levels of carbon dioxide and ozone will impact productivity and carbon sequestration in forest ecosystems. The scale of this process and the potential economic consequences provide an incentive for the development of models to predict the types and rates of ecosystem responses and feedbacks that result from and ...
Yan Zhennan Z CBIM, Rutgers University, Piscataway, NJ, - - 2014
Automated assessment of hepatic fat-fraction is clinically important. A robust and precise segmentation would enable accurate, objective and consistent measurement of hepatic fat-fraction for disease quantification, therapy monitoring and drug development. However, segmenting the liver in clinical trials is a challenging task due to the variability of liver anatomy as ...
Kim Hyune-Ju HJ Department of Mathematics, Syracuse University, Syracuse, NY, 13244, - - 2014
In this paper, we propose methods to cluster groups of two-dimensional data whose mean functions are piecewise linear into several clusters with common characteristics such as the same slopes. To fit segmented line regression models with common features for each possible cluster, we use a restricted least squares method. In ...
Holden Matthew Stephen - - 2014
Computer-assisted training systems promote both training efficacy and patient health. An important component for providing automatic feedback in computer-assisted training systems is workflow segmentation: the determination of what task in the workflow is being performed. Our objective was to develop a workflow segmentation algorithm for needle interventions using needle tracking ...
Eisank Clemens C Department of Geoinformatics-Z_GIS, University of Salzburg, Schillerstraße 30, 5020 Salzburg, - - 2014
Mapping or "delimiting" landforms is one of geomorphology's primary tools. Computer-based techniques such as land-surface segmentation allow the emulation of the process of manual landform delineation. Land-surface segmentation exhaustively subdivides a digital elevation model (DEM) into morphometrically-homogeneous irregularly-shaped regions, called terrain segments. Terrain segments can be created from various land-surface ...
Valle Laia Guàrdia LG Universitat Autònoma de Barcelona, Bellaterra, Barcelona, 08182, Spain - - 2014
New data about trichomycetes (arthropod gut endosymbionts) from northern Italy (Piedmont [Piemonte] region) are reported, including the description of two new species of Harpellales: Glotzia distorta from mayfly nymphs and Orphella intropus from stonefly nymphs. The latter species is characterized by a cellular bulbous holdfast that perforates the gut lining ...
Dekker David M T DM Leiden University Medical Center, PO Box 9600, Leiden, 2300 RC, - - 2014
Implementation of double cable models to simulate the behavior of myelinated peripheral nerve fibers requires defining a segmentation of the internode between successive nodes of Ranvier. The number of internodal segments is a model parameter that is not well agreed on, with values in the literature ranging from 1 to ...
Ali Asem M AM Electrical Engineering Department, Assiut University, Assiut 71515, Egypt; Computer Vision and Image Processing Laboratory, UofL, Louisville, KY 40292, USA. Electronic address: - - 2014
We propose a novel vertebral body segmentation approach, which is based on the graph cuts technique with shape constraints. The proposed approach depends on both image appearance and shape information. Shape information is gathered from a set of training shapes. Then we estimate the shape variations using a new distance ...
Kim Eun Young EY Department of Biomedical Engineering, University of Iowa, Iowa, IA, 52242, USA. Electronic address: - - 2014
Machine learning (ML)-based segmentation methods are a common technique in the medical image processing field. In spite of numerous research groups that have investigated ML-based segmentation frameworks, there remains unanswered aspects of performance variability for the choice of two key components: ML-algorithm and intensity normalization. This investigation reveals that the ...
Miyashita R R Department of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, - - 2014
We hypothesised that an in-vivo adjustment method and/or a newer sensor would increase the accuracy of non-invasive and continuous haemoglobin monitoring (SpHb) measurements. Two sensors, the R1-25 and R2-25a (the newer version), were used with laboratory total haemoglobin concentration (tHb) values simultaneously recorded. In-vivo adjusted SpHb (AdHb) was calculated by ...
Gass Tobias - - 2014
In this paper, a novel Markov random field (MRF) based approach is presented for segmenting medical images while simultaneously registering an atlas non-rigidly. In the literature, both segmentation and registration have been studied extensively. For applications that involve both, such as segmentation via atlas-based registration, earlier studies proposed addressing these ...
Olofsson Per P Department of Obstetrics and Gynecology, Institution of Clinical Sciences, Skåne University Hospital, Lund University, Malmö, - - 2014
We appraised the methodology, execution and quality of the five published meta-analyses that are based on the five randomized controlled trials (RCTs) which compared cardiotocography (CTG) +ST analysis to CTG. The meta-analyses contained errors, either created de novo in handling of original data, or from a failure to recognize essential ...
Price Trevor D TD Department of Ecology and Evolution, University of Chicago, Chicago, Illinois 60637, - - 2014
Speciation generally involves a three-step process-range expansion, range fragmentation and the development of reproductive isolation between spatially separated populations. Speciation relies on cycling through these three steps and each may limit the rate at which new species form. We estimate phylogenetic relationships among all Himalayan songbirds to ask whether the ...
Awate Suyash - - 2014
This paper proposes a novel theoretical framework to model and analyze the statistical characteristics of a wide range of segmentation methods that incorporate a database of label maps or atlases; such methods are termed as label fusion or multiatlas segmentation. We model these multiatlas segmentation problems as nonparametric regression problems ...
Durand Eric Y EY 1 23andMe, Inc., Mountain View, CA, - - 2014
Analysis of genomic segments shared identical-by-descent (IBD) between individuals is fundamental to many genetic applications, from demographic inference to estimating the heritability of diseases, but IBD detection accuracy in non-simulated data is largely unknown. In principle, it can be evaluated using known pedigrees, as IBD segments are by definition inherited ...
Jones Matthew C MC Center for Voice, Airway and Swallowing, Department of Otolaryngology, Georgia Regents University, Augusta, - - 2014
Surgical advancements rely heavily on validated animal models. The New Zealand White rabbit (NZWR) is a widely used model for airway research, including regenerative medicine applications. Currently, the biomechanical properties of the normal rabbit trachea are not known. Our objective is to define these properties to assist in the standardization ...
Czajkowska Joanna J Department of Computer Science and Medical Equipment, Faculty of Biomedical Engineering, Silesian University of Technology, ul. Charlesa de Gaulle'a 66, 41-800 Zabrze, Poland; Institute for Vision and Graphics, University of Siegen, Hoerlindstr. 3, 57076 Siegen, Germany. Electronic address: - - 2014
The study presents a new statistical model based segmentation technique dedicated to inhomogeneous bone tumours structure analysis. The presented 3-D segmentation procedure applies a statistic description of the structure based on Gaussian mixture model and an adaptive model-based relative fuzzy connectedness technique. It has been tested on 94 different MR ...
Futschik Andreas A Department of Applied Statistics, JKU University Linz, A-4040 Linz, - - 2014
DNA segmentation, i.e. the partitioning of DNA in compositionally homogeneous segments, is a basic task in bioinformatics. Different algorithms have been proposed for various partitioning criteria such as GC content, local ancestry in population genetics, or copy number variation. A critical component of any such method is the choice of ...
Iglesias K K Institute of Social and Preventive Medicine, Lausanne University Hospital, Route de la Corniche 10, Lausanne CH-1010, - - 2014
/st>To better understand the structure of the Patient Assessment of Chronic Illness Care (PACIC) instrument. More specifically to test all published validation models, using one single data set and appropriate statistical tools. /st>Validation study using data from cross-sectional survey. /st>A population-based sample of non-institutionalized adults with diabetes residing in Switzerland ...
Rathke Fabian F Image & Pattern Analysis Group (IPA), University of Heidelberg, Speyerer Str. 6, 69126 Heidelberg, Germany. Electronic address: - - 2014
With the introduction of spectral-domain optical coherence tomography (OCT), resulting in a significant increase in acquisition speed, the fast and accurate segmentation of 3-D OCT scans has become evermore important. This paper presents a novel probabilistic approach, that models the appearance of retinal layers as well as the global shape ...
Guo Yi - - 2014
A novel approach is presented to automatically segment the left ventricle in fetal echocardiograms. The proposed approach strategically integrates sparse representation, global constraint, and local refinement algorithms into an active appearance model (AAM) framework. In the training stage, we construct an enhanced AAM texture model to deal with the speckle ...
Kuang-Jui Hsu - - 2014
In this paper, we address the problem of the high annotation cost of acquiring training data for semantic segmentation. Most modern approaches to semantic segmentation are based upon graphical models, such as the conditional random fields, and rely on sufficient training data in form of object contours. To reduce the ...
Lee Hyunna - - 2014
In this paper, we propose a fast three-material modeling for electronic cleansing (EC) in computed tomographic colonography. Using a triple arch projection, our three-material modeling provides a very quick estimate of the three-material fractions to remove ridge-shaped artifacts at the T-junctions where air, soft-tissue (ST), and tagged residues (TRs) meet ...
Sousa Clara C REQUIMTE, Microbiology Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal. Electronic address: - - 2014
In this work we developed and validated a FTIR-ATR (Fourier transform infrared spectroscopy with attenuated total reflectance) based model for typing Acinetobacter baumannii clinical isolates belonging to ST98, ST208 and ST218 included into the worldwide spread clonal complex (CC) 92 and ST103. FTIR-ATR spectra of seventy-seven previously characterized isolates (Multi ...
Asman Andrew J AJ Electrical Engineering, Vanderbilt University, Nashville, TN, USA - - 2014
Label fusion is a critical step in many image segmentation frameworks (e.g., multi-atlas segmentation) as it provides a mechanism for generalizing a collection of labeled examples into a single estimate of the underlying segmentation. In the multi-label case, typical label fusion algorithms treat all labels equally - fully neglecting the ...
Xu Zhoubing Z Electrical Engineering, Vanderbilt University, Nashville, TN, USA - - 2014
Spleen segmentation on clinically acquired CT data is a challenging problem given the complicity and variability of abdominal anatomy. Multi-atlas segmentation is a potential method for robust estimation of spleen segmentations, but can be negatively impacted by registration errors. Although labeled atlases explicitly capture information related to feasible organ shapes, ...
Warner Joshua D JD Mayo Clinic Department of Biomedical Engineering, Mayo Graduate School, Mayo Medical School and the Mayo Clinic Medical Scientist Training Program, 200 First Street SW, Rochester, MN, 55905, USA, - - 2014
Stereology is a volume estimation method, typically applied to diagnostic imaging examinations in population studies where planimetry is too time-consuming (Chapman et al. Kidney Int 64:1035-1045, 2003), to obtain quantitative measurements (Nyengaard J Am Soc Nephrol 10:1100-1123, 1999, Michel and Cruz-Orive J Microsc 150:117-136, 1988) of certain structures or organs. ...
Jeong Jong Cheol JC Department of Molecular Biosciences and Center for Bioinformatics, The University of Kansas, Lawrence, Kansas, - - 2014
Molecular dynamics (MD) simulation has become one of the key tools to obtain deeper insights into biological systems using various levels of descriptions such as all-atom, united-atom, and coarse-grained models. Recent advances in computing resources and MD programs have significantly accelerated the simulation time and thus increased the amount of ...
Zeng Qiang Q Urban Transport Research Center School of Traffic and Transportation Engineering Central South University, Changsha, Hunan 410075, PR China. Electronic address: - - 2014
This study proposes a Bayesian spatial joint model of crash prediction including both road segments and intersections located in an urban road network, through which the spatial correlations between heterogeneous types of entities could be considered. A road network in Hillsborough, Florida, with crash, road, and traffic characteristics data for ...
Rouhani H H Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratory of Movement Analysis and Measurement, ELH 137/ Station 11, CH-1015 Lausanne, Switzerland. Electronic address: - - 2014
This study aims to design a wearable system for kinetics measurement of multi-segment foot joints in long-distance walking and to investigate its suitability for clinical evaluations. The wearable system consisted of inertial sensors (3D gyroscopes and 3D accelerometers) on toes, forefoot, hindfoot, and shank, and a plantar pressure insole. After ...
Parisot Sarah S Biomedical Image Analysis Group, Department of Computing, Imperial College London, UK. Electronic address: - - 2014
In this paper, we present a graph-based concurrent brain tumor segmentation and atlas to diseased patient registration framework. Both segmentation and registration problems are modeled using a unified pairwise discrete Markov Random Field model on a sparse grid superimposed to the image domain. Segmentation is addressed based on pattern classification ...
Wollgarten Markus M Helmholtz Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany. Electronic address: - - 2014
A Bayesian approach to reconstruction and segmentation of tomographic data is outlined and further detailed for the case of absorption tomography. The algorithm allows the quantification of reconstruction errors and segmentation confidence. Calculation results for various experimental settings (number of projections, incident dose, different materials) are shown and discussed.
Slakey Douglas P DP Department of Surgery, Tulane University School of Medicine, 1430 Tulane Avenue, SL22, New Orleans, LA 70112, - - 2014
/st>The purpose of this study was to develop and test a simulation method of conducting investigation of the causality of adverse surgical outcomes. /st>Six hundred and thirty-one closed claims of a major medical malpractice insurance company were reviewed. Each case had undergone conventional root cause analysis (RCA). Claims were categorized ...
Sicsic Jonathan J CERMES3, UMR8211, Inserm U988, Site CNRS, 7, rue Guy Moquet, Villejuif Cedex 94801, - - 2014
/st>Pay-for-performance programmes have been widely implemented in primary care, but few studies have investigated their potential adverse effects on the intrinsic motivation of general practitioners (GPs) even though intrinsic motivation may be a key determinant of quality in health care. Our aim was to compare methods for developing a composite ...
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