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Poolkhet C - - 2012
The aim of this study is to explain the social networks of the backyard chicken in Ratchaburi, Suphan Buri and Nakhon Pathom Provinces. In this study, we designed the nodes as groups of persons or places involved in activities relating to backyard chickens. The ties are all activities related to ...
Frament Cameron M - - 2012
Knowledge of nanopore size and shape is critical for many implementations of these single-molecule sensing elements. Geometry determination by fitting the electrolyte-concentration-dependence of the conductance of surface-charged, solid-state nanopores has been proposed to replace demanding electron microscope-based methods. The functional form of the conductance poses challenges for this method by ...
Michalek Pavel - - 2012
PURPOSE: Infraorbital nerve block is used for intraoperative and postoperative analgesia in nasal and oral surgery procedures, as well as in the chronic pain settings. Ultrasound guidance has not been described in the literature. The aim of the study was to assess the quality of ultrasound imaging of the infraorbital ...
Posé Nicolas - - 2012
We performed numerical simulations of the q-state Potts model to compute the reduced conductivity exponent t/ν for the critical Coniglio-Klein clusters in two dimensions, for values of q in the range [1,4]. At criticality, at least for q<4, the conductivity scales as C(L)∼L^{-t/ν}, where t and ν are, respectively, the ...
Parra-Robles Juan J Unit of Academic Radiology, University of Sheffield, United Kingdom. - - 2012
Hyperpolarized (3)He diffusion experiments have been shown to be sensitive to changes in acinar structure due to emphysematous lung disease. Extracting quantitative information about lung microstructure from the diffusion signal is complicated due its dependence on a number of factors including diffusion time and the complex branching acinar geometry. A ...
Zhang Z - - 2012
Fetal ECG (FECG) telemonitoring is an important branch in telemedicine. The design of a telemonitoring system via a wireless body-area network with low energy consumption for ambulatory use is highly desirable. As an emerging technique, compressed sensing (CS) shows great promise in compressing/ reconstructing data with low energy consumption. However, ...
Lin Yu - - 2012
SUMMARY: TIBA is a tool to reconstruct phylogenetic trees from rearragement data which consists of ordered lists of synteny blocks (or genes) where each synteny block is shared with all of its homologs in the input genomes. The evolution of these synteny blocks, through rearrangement operations, is modeled by the ...
Kukreti B M - - 2012
With the objective to affirm the apparent uranium ore zone grade/thickness with good confidence for the non-cored as well as those boreholes with poor core recovery in the sedimentary environment of Wahkut block, West Khasi Hills district of Meghalaya, a systematic study between the in situ measured γ-ray logs under ...
Hergarten Stefan - - 2012
A self-organized critical branching process based on a local interaction rule is presented. In accordance with the self-organized branching process model introduced by Zapperi, Lauritsen, and Stanley, its event-size distribution follows a power law with scaling exponent τ=3/2, but the new model does not require a global variable to self-organize ...
Crandall David J - - 2012
Recent work in structure from motion (SfM) has built 3D models from large collections of images downloaded from the Internet. Many approaches to this problem use incremental algorithms that solve progressively larger bundle adjustment problems. These incremental techniques scale poorly as the image collection grows, and can suffer from drift ...
Davies Joel C - - 2012
The frontotemporal branch of the facial nerve (FTN) is vulnerable during craniofacial surgeries due to its superficial course and variable distribution. Surface landmarks that correlate with the underlying course of the FTN can assist in surgical planning. Estimates of the course of FTN commonly rely on Pitanguy's line (PL), which ...
Nutton Vivian - - 2012
The De humani corporis fabrica [The Fabric of the Human Body], Basle, 1543, of Andreas Vesalius is deservedly famous as the first modern book of anatomy. A second edition was published in Basle in 1555, but little is known of Vesalius' activities after that date. This article discusses a recent ...
Caiafa Cesar F - - 2012
Recently there has been great interest in sparse representations of signals under the assumption that signals (data sets) can be well approximated by a linear combination of few elements of a known basis (dictionary). Many algorithms have been developed to find such representations for one-dimensional signals (vectors), which requires finding ...
Young Kristie L - - 2012
A significant proportion of road trauma occurs at intersections. Understanding the nature of driving errors at intersections therefore has the potential to lead to significant injury reductions. To further understand how the complexity of modern intersections shapes behaviour of these errors are compared to errors made mid-block, and the role ...
Pardi Fabio - - 2012
Several popular methods for phylogenetic inference (or hierarchical clustering) are based on a matrix of pairwise distances between taxa (or any kind of objects): The objective is to construct a tree with branch lengths so that the distances between the leaves in that tree are as close as possible to ...
Safdari M - - 2012
In this investigation, a recent model for assessing the electrical conductivity of nanocomposites comprising a single type of conductive nanofiller was expanded to cases with mixtures of nanofillers. The extended model considers electron tunneling as the effective mechanism for insulator-conductor transition. The model was validated with relevant experimental data based ...
Peixoto Tiago P - - 2012
We model the robustness against random failure or an intentional attack of networks with an arbitrary large-scale structure. We construct a block-based model which incorporates-in a general fashion-both connectivity and interdependence links, as well as arbitrary degree distributions and block correlations. By optimizing the percolation properties of this general class ...
Ben-Yosef Guy - - 2012
We propose a theory for cortical representation and computation of visually completed curves that are generated by the visual system to fill in missing visual information (e.g., due to occlusions). Recent computational theories and physiological evidence suggest that although such curves do not correspond to explicit image evidence along their ...
Liu Mei M Department of Biology, Harbin Normal University, PR - - 2012
Fruit structural characters have traditionally been important in the taxonomy of the family Apiaceae. Previous investigations using a limited number of taxa have shown that the carpophore may be especially useful in helping to circumscribe subfamily Azorelloideae. The present study examines, for the first time, carpophore structure in 92 species ...
Martel Sylvain - - 2012
Microorganisms and specifically motile bacteria have been recently added to the list of micro-actuators typically considered for the implementation of microsystems and microrobots. Such trend has been motivated by the fact these microorganisms are self-powered actuators with overall sizes at the lower end of the micrometer range and which have ...
Barry David J - - 2012
The productivity of an industrial fermentation process involving a filamentous microbe is heavily dependent on the morphological form adopted by the organism. The development of systems capable of rapidly and accurately characterizing morphology within a given process represents a significant challenge, as the complex phenotypes that are manifested are not ...
Witnauer James E - - 2012
Previous simulations revealed that the sometimes competing retrieval model (SOCR; Stout & Miller, Psychological Review, 114, 759-783, 2007), which assumes local error reduction, can explain many cue interaction phenomena that elude traditional associative theories based on total error reduction. Here, we applied SOCR to a new set of Pavlovian phenomena. ...
Loop Torsten - - 2012
Although a potentially toxic gaseous molecule, carbon monoxide recently gains rising scientifically and clinical interest as its beneficial effects and mechanisms of action are defined substantially in various in vitro and in vivo experiments. Its anti-inflammatory, anti-apoptotic and anti-proliferative properties but its increasing impact concerning numerous disease models in means ...
König Gerhard - - 2012
New methods for computing eigenvectors of symmetric block tridiagonal matrices based on twisted block factorizations are explored. The relation of the block where two twisted factorizations meet to an eigenvector of the block tridiagonal matrix is reviewed. Based on this, several new algorithmic strategies for computing the eigenvector efficiently are ...
Saakian David B - - 2012
We considered a multiblock molecular model of biological evolution, in which fitness is a function of the mean types of alleles located at different parts (blocks) of the genome. We formulated an infinite population model with selection and mutation, and calculated the mean fitness. For the case of recombination, we ...
Gershman Samuel J - - 2012
We frame behavior in classical conditioning experiments as the product of normative statistical inference. According to this theory, animals learn an internal model of their environment from experience. The basic building blocks of this internal model are latent causes-explanatory constructs inferred by the animal that partition observations into coherent clusters. ...
Deng Dong-dong - - 2012
In order to better understand biatrial conduction, investigate various conduction pathways, and compare the differences between isotropic and anisotropic conductions in human atria, we present a simulation study of biatrial conduction with known/assumed conduction pathways using a recently developed human atrial model. In addition to known pathways: (1) Bachmann's bundle ...
Adl Sina M - - 2012
This revision of the classification of eukaryotes, which updates that of Adl et al. [J. Eukaryot. Microbiol. 52 (2005) 399], retains an emphasis on the protists and incorporates changes since 2005 that have resolved nodes and branches in phylogenetic trees. Whereas the previous revision was successful in re-introducing name stability ...
Netopilík Miloš - - 2012
The SEC separation of a randomly branched polymer, in particular local dispersity due to branching, are theoretically examined. A model of the SEC separation of randomly branched polymer with tetrafunctional branch points enabling the estimation of local dispersity was developed. Measurable quantities (branching indices) were compared with real data. Local ...
Minchin Dan - - 2012
A rapid assessment, using the abundance and distribution range method, was used to evaluate the status of a large branching bryozoan, Zoobotryon verticillatum attached to the immersed part of marina pontoons in the Canary Islands. Colonies were also found attached to the hulls of leisure craft berthed alongside pontoons at ...
Coenen Pieter - - 2012
BACKGROUND: Cumulative low-back load is suggested to be associated with low back pain, possibly due to (micro-)fractures of spinal segments. Based on available in vitro data it can be assumed that, in order to predict spine segment failure from cumulative compressive loading, load magnitude should be weighted with an exponent ...
Hassan Tahsin - - 2012
Mean electromyogram (EMG) conduction delay is often estimated as the average time delay between two surface EMG recordings arranged along the conduction path. It has previously been shown that the complete distribution of conduction delays can be estimated from the impulse response relating the "upstream" EMG recording to the "downstream" ...
Toyoizumi Hiroshi - - 2012
Large-degree nodes may have a larger influence on the network, but they can be bottlenecks for spreading information since spreading attempts tend to concentrate on these nodes and become redundant. We discuss that the reverse preferential spread (distributing information inversely proportional to the degree of the receiving node) has an ...
Gilboa Elad - - 2012
Finding the electrical conductivity of tissue is important for understanding the tissue's structure and functioning. However, the inverse problem of inferring spatial conductivity from data is highly ill-posed and computationally intensive. In this paper, we propose a novel method to solve the inverse problem of inferring tissue conductivity from a ...
Kim Tae Yup TY Department of Neurosurgery, Guro Teun Teun Hospital, Seoul, - - 2012
A finite element analysis. To evaluate the differences between surgical techniques in terms of the effects of arthrodesis on adjacent segments. Augmentation with posterior rigid fixation combined with transpedicular screw insertion, which is one of the most popular techniques for lumbar arthrodesis, shows benefits in immediate stabilization and a higher ...
Wilson Jefferson R - - 2012
To improve clinicians' ability to predict outcome after spinal cord injury (SCI) and to help classify patients within clinical trials, we have created a novel prediction model relating acute clinical and imaging information to functional outcome at 1 year. Data were obtained from two large prospective SCI datasets. Functional independence ...
De Bruyn Kristof - - 2012
We have recently seen new upper bounds for B_{s}^{0}→μ^{+}μ^{-}, a key decay to search for physics beyond the standard model. Furthermore a nonvanishing decay width difference ΔΓ_{s} of the B_{s} system has been measured. We show that ΔΓ_{s} affects the extraction of the B_{s}^{0}→μ^{+}μ^{-} branching ratio and the resulting constraints ...
Yang Zhi - - 2012
This paper models in vivo neural signals and noise for extracellular spike detection. Although the recorded data approximately follow Gaussian distribution, they clearly deviate from white Gaussian noise due to neuronal synchronization and sparse distribution of spike energy. Our study predicts the coexistence of two components embedded in neural data ...
Liu Meizhu - - 2012
Fiber tracking from diffusion tensor images is an essential step in numerous clinical applications. There is a growing demand for an accurate and efficient framework to perform quantitative analysis of white matter fiber bundles. In this paper, we propose a robust framework for fiber clustering. This framework is composed of ...
Carlozzi Noelle E - - 2012
Purpose: Virtual reality (VR) is a relatively new technology that is currently utilized in a wide variety of settings to test and train individuals in specialized skills. This study examines methods for improving driver retraining protocols for persons with spinal cord injury (SCI). Method: We compared a VR driving simulator, ...
Berry Tyrus - - 2012
We develop a method from semiparametric statistics (Cox, 1972) for the purpose of tracking links and connection strengths over time in a neuronal network from spike train data. We consider application of the method as implemented in (Masud and Borisyuk, 2011), and evaluate its use on data generated independently of ...
Thaler Martin - - 2012
: Kuntz et al recently introduced a new system for classifying spinal deformities. This classification of spinal deformity was developed from age-dependent deviations from the neutral upright spinal alignment. : To determine the interobserver and intraobserver reliabilities of the new Kuntz et al system for classifying scoliosis. : Fifty consecutive ...
Eijkholt Marleen - - 2012
Aims: The purpose of this study was to characterize the self-perceived role of professionals and personal caregivers in decision-making about participation in stem cell clinical trials by individuals in early post-spinal cord injury time-points. Materials & methods: Data were obtained from focus groups and semi-structured individual interviews from two networks: ...
Ferreira Leonardo M R - - 2012
One only needs to see a salamander regrowing a lost limb to become fascinated by regeneration. However, the lack of robust axonal regeneration models for which good cellular and molecular tools exist has hampered progress in the field. Nevertheless, the nervous system has been revealed to be an excellent model ...
Hussain Mozammil - - 2012
Biomechanics of normal vertebral segments adjacent to a degenerated segment in the cervical spine. To test the hypothesis that posterior facet joints of adjacent segments are loaded more when degeneration occurs in the intermediate disc segment. Degeneration progression in adjacent segments is a clinical concern. Literature studies that have documented ...
Choi D S - - 2012
We present asymptotic and finite-sample results on the use of stochastic blockmodels for the analysis of network data. We show that the fraction of misclassified network nodes converges in probability to zero under maximum likelihood fitting when the number of classes is allowed to grow as the root of the ...
Worobey Lynn - - 2012
The aims of this study were to report the current incidence of wheelchair breakdowns, repairs, and consequences and to compare current data with historical data. A convenience sample survey of 723 participants with spinal cord injury who use a wheelchair for more than 40 hrs/wk treated at a Spinal Cord ...
Cowan Rachel E - - 2012
PURPOSE: To assess 6 minute push test (6MPT) reliability, determine if the 6MPT is sensitive to fitness differences, and assess if 6MPT distance predicts fitness level in persons with spinal cord injury or disease (SCI). METHODS: Forty individuals with SCI who could self-propel a manual wheelchair completed an incremental arm ...
Ginis Kathleen A Martin - - 2012
BACKGROUND: Most studies of physical activity predictors in people with disability have lacked a guiding theoretical framework. Identifying theory-based predictors is important for developing activity-enhancing strategies. PURPOSE: To use the World Health Organization's International Classification of Functioning, Disability and Health (ICF) framework to identify predictors of leisure time physical activity ...
Cox Brett W - - 2012
PURPOSE: Spinal stereotactic radiosurgery (SRS) is increasingly used to manage spinal metastases. However, target volume definition varies considerably and no consensus target volume guidelines exist. This study proposes consensus target volume definitions using common scenarios in metastatic spine radiosurgery. METHODS AND MATERIALS: Seven radiation oncologists and 3 neurological surgeons with ...
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