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Horgan S S UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; Non-invasive Cardiovascular Imaging, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA. Electronic address: - - 2014
Left ventricular diastolic dysfunction leads to heart failure with preserved ejection fraction, an increasingly prevalent condition largely driven by modern day lifestyle risk factors. As heart failure with preserved ejection fraction accounts for nearly half of all patients with heart failure, appropriate animal models are required to improve our understanding ...
Devanne Maxime - - 2014
Recognizing human actions in 3-D video sequences is an important open problem that is currently at the heart of many research domains including surveillance, natural interfaces and rehabilitation. However, the design and development of models for action recognition that are both accurate and efficient is a challenging task due to ...
Gopakumar Shivapratap - - 2014
We investigate feature stability in the context of clinical prognosis derived from high-dimensional Electronic Medical Records. To reduce variance in the selected features that are predictive, we introduce Laplacian-based regularization into a regression model. The Laplacian is derived on a feature graph that captures both the temporal and hierarchic relations ...
de Schlichting E E Ladaf, Laboratoire d'Anatomie des Alpes Françaises, UFR de Médecine, Université Grenoble-Alpes, Domaine de la Merci, 38706, La Tronche Cedex, - - 2014
The 3D modeling of human anatomy is more and more often used in medical education and in computer-augmented medicine. The lack of a 3D model of the pericardium has led us to its implementation. The pericardium was reconstructed from a CT scan recording of a young, healthy subject. The anonymous ...
Ouwerkerk Wouter W Department of Clinical Epidemiology, Biostatistics, and Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands. Electronic address: - - 2014
The present paper systematically reviews and compares existing prediction models in order to establish the strongest variables, models, and model characteristics in patients with heart failure predicting outcome. To improve decision making accurately predicting mortality and heart-failure hospitalization in patients with heart failure can be important for selecting patients with ...
Rahimi Kazem K George Institute for Global Health, University of Oxford, Oxford, United Kingdom; Division of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom; Department of Cardiology, Oxford University Hospitals NHS Trust, Oxford, United Kingdom. Electronic address: - - 2014
This study sought to review the literature for risk prediction models in patients with heart failure and to identify the most consistently reported independent predictors of risk across models. Risk assessment provides information about patient prognosis, guides decision making about the type and intensity of care, and enables better understanding ...
Pope Katherine S KS Department of Plant Sciences, University of California, 70 Cottonwood Street, Davis, CA, 95695, USA, - - 2014
Warming winters due to climate change may critically affect temperate tree species. Insufficiently cold winters are thought to result in fewer viable flower buds and the subsequent development of fewer fruits or nuts, decreasing the yield of an orchard or fecundity of a species. The best existing approximation for a ...
Berger Ryan R a Florida State University College of Medicine , Tallahassee - - 2014
Abstract. The use of AEDs increases survival in cardiac arrest events. Due to the success of previous efforts and free, readily available mobile mapping software, the discussion is to emphasize the importance of the use of AEDs to prevent SCA-related deaths on college campuses and abroad, while suggesting a novel ...
Starke Verena V Carnegie Institution of Washington, Geophysical Laboratory, 5251 Broad Branch Road, Washington, DC 20015, USA - - 2014
This paper presents Thresher, an improved technique for finding peak height thresholds for ARISA profiles. We argue that thresholds must be sample dependent, taking community richness into account. In most previous fragment analyses, a common threshold is applied to all samples simultaneously, ignoring richness variations among samples and thereby compromising ...
Green H K HK Respiratory Diseases Department, Centre for Infectious Disease Surveillance and Control, Public Health England, - - 2014
SUMMARY General Practitioner consultation rates for influenza-like illness (ILI) are monitored through several geographically distinct schemes in the UK, providing early warning to government and health services of community circulation and intensity of activity each winter. Following on from the 2009 pandemic, there has been a harmonization initiative to allow ...
Sohrabpour Abbas A Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, - - 2014
To investigate the relationship between EEG source localization and the number of scalp EEG recording channels. 128 EEG channel recordings of 5 pediatric patients with medically intractable partial epilepsy were used to perform source localization of interictal spikes. The results were compared with surgical resection and intracranial recordings. Various electrode ...
Chen Bihua B School of Biomedical Engineering, Third Military Medical University and Chongqing University, Chongqing, - - 2014
Defibrillation current has been shown to be a clinically more relevant dosing unit than energy. However, the effects of average and peak current in determining shock outcome are still undetermined. The aim of this study was to investigate the relationship between average current, peak current and defibrillation success when different ...
Lemkin Daniel L DL From the Department of Emergency Medicine, University of Maryland School of Medicine (D.L.L., M.D.W, A.F., M.C.B.), Department of Emergency Medicine, University of Maryland Medical Center (M.A.), Baltimore, MD, and Linear Technology (M.L.), Hayward, CA. Electronic address: - - 2014
The use of hands-on defibrillation (HOD) to reduce interruption of chest compression after cardiac arrest has been suggested as a means of improving resuscitation outcomes. The potential dangers of this strategy in regard to exposing rescuers to electrical energy are still being debated. This study seeks to determine the plausible ...
Cabello Gema G Instituto de Química Física "Rocasolano", CSIC, C. Serrano 119, E-28006, Madrid, - - 2014
The shift with increasing concentration of alkali-metal cations of the potentials of both the spike and the hump observed in the cyclic voltammograms of Pt(111) electrodes in sulfuric acid solutions is shown to obey the simple model recently developed by us to explain the effect of non-covalent interactions at the ...
Huig Isabelle C IC Erasmus Medical Centre, Rotterdam, Netherlands. Electronic address: - - 2014
In the Netherlands there are, at the time of writing, no clear guidelines about the implementation of automated external defibrillators (AEDs). An observational study was conducted to investigate the current status of AEDs in city centres in the Netherlands looking specifically at the availability, condition and employability of the AEDs. ...
Piray Payam P Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6500 HB Nijmegen, the Netherlands, p.piray@donders.ru.nl - - 2014
A substantial subset of Parkinson's disease (PD) patients suffers from impulse control disorders (ICDs), which are side effects of dopaminergic medication. Dopamine plays a key role in reinforcement learning processes. One class of reinforcement learning models, known as the actor-critic model, suggests that two components are involved in these reinforcement ...
Backlund Ville-Pekka VP BECS, School of Science, Aalto University, P.O. Box 12200, FI-00076 AALTO, - - 2014
A person's decision to adopt an idea or product is often driven by the decisions of peers, mediated through a network of social ties. A common way of modeling adoption dynamics is to use threshold models, where a node may become an adopter given a high enough rate of contacts ...
Farooq Adnan A Impedance Imaging Research Center and Department of Biomedical Engineering, Kyung Hee University, - - 2014
Electrical impedance tomography is an attractive functional imaging method. It is currently limited in resolution and sensitivity due to the complexity of the inverse problem and the safety limits of introducing current. Recently, internal electrodes have been proposed for some clinical situations such as intensive care or RF ablation. This ...
Griffanti L L Ludovica Griffanti, MR Laboratory, Fondazione Don Carlo Gnocchi ONLUS, IRCCS S. Maria Nascente, via Capecelatro 66, 20148 Milan, Italy, E-mail: - - 2014
Introduction: This article is part of the Focus Theme of Methods of Information in Medicine on "Biosignal Interpretation: Advanced Methods for Neural Signals and Images". Background: Voxel-based functional connectivity analysis is a common method for resting state fMRI data. However, correlations between the seed and other brain voxels are corrupted ...
Wetzel Eunike E Otto-Friedrich-University Bamberg, - - 2014
When questionnaire data with an ordered polytomous response format are analyzed in the framework of item response theory using the partial credit model or the generalized partial credit model, reversed thresholds may occur. This led to the discussion of whether reversed thresholds violate model assumptions and indicate disordering of the ...
Jing X X Xia Jing, Assistant Professor, NIH Clinical Center, National Institutes of Health, Street, Bethesda,MA, - - 2014
Objectives: Graphical displays can make data more understandable; however, large graphs can challenge human comprehension. We have previously described a filtering method to provide high-level summary views of large data sets. In this paper we demonstrate our method for setting and selecting thresholds to limit graph size while retaining important ...
Elliott N C - - 2014
Panicle caterpillars comprise an economically important insect pest complex of sorghum throughout the Great Plains of the United States, particularly in Kansas, Oklahoma, and Texas. The sorghum panicle caterpillar complex consists of larvae of two polyphagous lepidopteran species: the corn earworm, Helicoverpa zea (Boddie), and fall armyworm, Spodoptera frugiperda (J.E. ...
Hsu Yung-Fong YF Department of Psychology, National Taiwan University, Taipei City, - - 2014
The study of thresholds for discriminability has been of long-standing interest in psychophysics. While threshold theories embrace the concept of discrete-state thresholds, signal detection theory discounts such a concept. In this paper we concern ourselves with the concept of thresholds from the discrete-state modelling viewpoint. In doing so, we find ...
Glick Joshua J Penn State Hershey Medical Center, Penn State College of Medicine, Hershey, - - 2014
Coordination of the tasks of performing chest compressions and defibrillation can lead to communication challenges that may prolong time spent off the chest. The purpose of this study was to determine whether defibrillation provided by the provider performing chest compressions led to a decrease in peri-shock pauses as compared to ...
Kempe René R Department of Biomedical Engineering, City College of the City University of New York, New York, NY 10031, USA. Department of Biomedical Engineering, Hamburg University of Applied Sciences, Hamburg, - - 2014
Objective. Research studies on transcranial electric stimulation, including direct current, often use a computational model to provide guidance on the placing of sponge-electrode pads. However, the expertise and computational resources needed for finite element modeling (FEM) make modeling impractical in a clinical setting. Our objective is to make the exploration ...
Wang Zhen Z Department of Physics, Hong Kong Baptist University, Kowloon Tong, Hong Kong; Center for Nonlinear Studies and Beijing-Hong Kong-Singapore Joint Center for Nonlinear and Complex systems, Institute of Computational and Theoretical Studies, Hong Kong Baptist University, Kowloon Tong, Hong - - 2014
Evolution of cooperation in the prisoner's dilemma and the public goods game is studied, where initially players belong to two independent structured populations. Simultaneously with the strategy evolution, players whose current utility exceeds a threshold are rewarded by an external link to a player belonging to the other population. Yet ...
Jahanmiri-Nezhad Faezeh F *Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Illinois, U.S.A.; †Department of Bioengineering, University of Illinois, Chicago, Illinois, U.S.A.; ‡Department of Neurology, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A.; §Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois, U.S.A.; and ‖Institute of Biomedical Engineering, University of Science and Technology of China, Hefei, - - 2014
Examination of spontaneous muscle activity is an important part of the routine electromyogram (EMG) in assessing neuromuscular diseases. The EMG is specifically valuable as a diagnostic test in supporting the diagnosis of amyotrophic lateral sclerosis. High-density surface EMG is a relatively new technique that has until now been used in ...
Cavanaugh Kyle C - - 2014
The manner in which patches are delineated in spatially realistic metapopulation models will influence the size, connectivity, and extinction and recolonization dynamics of those patches. Most commonly used patch-definition methods focus on identifying discrete, contiguous patches of habitat from a single temporal observation of species occurrence or from a model ...
Santos-Concejero Jordan J a UCT/MRC Research Unit for Exercise Science and Sports Medicine , University of Cape Town , Cape Town , South - - 2014
Abstract This study investigated the influence of the regression model and initial intensity during an incremental test on the relationship between the lactate threshold estimated by the maximal-deviation method and performance in elite-standard runners. Twenty-three well-trained runners completed a discontinuous incremental running test on a treadmill. Speed started at 9 ...
Chizhov A V AV A.F. Ioffe Physical-Technical Institute of the Russian Academy of Sciences, Politekhnicheskaya str., 26, 194021, Saint-Petersburg, Russia, - - 2014
Characteristics of action potential generation are important to understanding brain functioning and, thus, must be understood and modeled. It is still an open question what model can describe concurrently the phenomena of sharp spike shape, the spike threshold variability, and the divisive effect of shunting on the gain of frequency-current ...
Hirschfeld Gerrit G German Pediatric Pain Center, Children's Hospital, Dr.-Friedrich-Steiner Str. 5, 45711 Datteln, Germany; Children's Pain Therapy and Paediatric Palliative Care, Witten/Herdecke University, 45711 Datteln, Germany. Electronic address: - - 2014
Many diagnostic studies are aimed at defining "optimal" thresholds. Here, we evaluate the performance of empirically defined optimal thresholds (1) in the sample in which they were defined and (2) in the population from which the sample was drawn. We simulated test results for 120,000 samples varying the number of ...
Ashworth Allan A Atkins, Woodcote Grove, Ashley Road, Epsom, Surrey KT18 5BW, - - 2014
A new radioactive substances regulatory regime came into effect across the UK on 1 October 2011, accompanied by Government and regulator's guidance. The legislation sets new activity thresholds for what is within its scope and for what is exempt from the permitting requirements. These thresholds are, for the first time, ...
Rich Carly C Medical Research Centre of Epidemiology for Child Health, University College London, London, United - - 2014
Accelerometers are designed to measure plausible human activity, however extremely high count values (EHCV) have been recorded in large-scale studies. Using population data, we develop methodological principles for establishing an EHCV threshold, propose a threshold to define EHCV in the ActiGraph GT1M, determine occurrences of EHCV in a large-scale study, ...
Woo Choong-Wan CW Department of Psychology and Neuroscience, University of Colorado Boulder, USA; Institute of Cognitive Science, University of Colorado Boulder, - - 2014
Cluster-extent based thresholding is currently the most popular method for multiple comparisons correction of statistical maps in neuroimaging studies, due to its high sensitivity to weak and diffuse signals. However, cluster-extent based thresholding provides low spatial specificity; researchers can only infer that there is signal somewhere within a significant cluster ...
Dotu Ivan I Biology Department, Boston College, Chestnut Hill, Massachusetts, United States of - - 2014
We describe the first algorithm and software, RNAenn, to compute the partition function and minimum free energy secondary structure for RNA with respect to an extended nearest neighbor energy model. Our next-nearest-neighbor triplet energy model appears to lead to somewhat more cooperative folding than does the nearest neighbor energy model, ...
Plazas-Nossa Leonardo L Universidad Distrital Francisco José de Caldas, Facultad de Ingeniería, Bogotá, Colombia E-mail: lplazasn@udistrital.edu.co;plazas-l@javeriana.edu.co; Grupo de Investigación Ciencia e Ingeniería del Agua y el Ambiente, Facultad de Ingeniería, Pontificia Universidad Javeriana, Bogotá, - - 2014
The objective of this work is to introduce a forecasting method for UV-Vis spectrometry time series that combines principal component analysis (PCA) and discrete Fourier transform (DFT), and to compare the results obtained with those obtained by using DFT. Three time series for three different study sites were used: (i) ...
van Vugt Marieke K MK Department of Artificial Intelligence, University of Groningen, Groningen, The - - 2014
Many perceptual decision making models posit that participants accumulate noisy evidence over time to improve the accuracy of their decisions, and that in free response tasks, participants respond when the accumulated evidence reaches a decision threshold. Research on the neural correlates of these models' components focuses primarily on evidence accumulation. ...
Fakhouri A A Department of Electrical Engineering and Electronics, Ariel University, 40700 Ariel, - - 2014
The paper focuses on the quantitative analysis of Israeli Government's targets of 10% renewable energy penetration by 2020 and determining the desired methodology (models) for assessing the effects on the electricity market, addressing the fact that Israel is an electricity island. The main objective is to determine the influence of ...
Serinaldi Francesco F School of Civil Engineering and Geosciences, Newcastle University Newcastle Upon Tyne, UK ; Willis Research Network London, - - 2014
[1] This study attempts to reconcile the conflicting results reported in the literature concerning the behavior of peak-over-threshold (POT) daily rainfall extremes and their distribution. By using two worldwide data sets, the impact of threshold selection and record length on the upper tail behavior of POT observations is investigated. The rainfall ...
Liu Zhi Z College of Information Engineering, North China University of Technology, Beijing 100144, China. - - 2014
For Wireless Sensor Networks, energy efficiency is always a key consideration in system design. Compressed sensing is a new theory which has promising prospects in WSNs. However, how to construct a sparse projection matrix is a problem. In this paper, based on a Bayesian compressed sensing framework, a new adaptive ...
Lopez-Gordo M A MA ISAEAR Department, University of Cadiz, Cadiz 11002, Spain. - - 2014
Electroencephalography (EEG) emerged in the second decade of the 20th century as a technique for recording the neurophysiological response. Since then, there has been little variation in the physical principles that sustain the signal acquisition probes, otherwise called electrodes. Currently, new advances in technology have brought new unexpected fields of ...
Tang Chuanye C Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, School of Instrument Science and Engineering, Southeast University, Sipailou 2, Nanjing 210096, China. - - 2014
Aiming to advance the coning algorithm performance of strapdown inertial navigation systems, a new half-compressed coning correction structure is presented. The half-compressed algorithm structure is analytically proven to be equivalent to the traditional compressed structure under coning environments. The half-compressed algorithm coefficients allow direct configuration from traditional compressed algorithm coefficients. ...
Shi Yunfei Y Department of Biomedical Engineering, Washington University St. Louis, MO, - - 2014
The morphogenetic process of cardiac looping transforms the straight heart tube into a curved tube that resembles the shape of the future four-chambered heart. Although great progress has been made in identifying the molecular and genetic factors involved in looping, the physical mechanisms that drive this process have remained poorly ...
Cooper Mitchell A MA Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America; Department of Radiology, Weill Cornell Medical College, New York, New York, United States of - - 2014
T1 mapping is a promising quantitative tool for assessing diffuse cardiomyopathies. The purpose of this study is to quantify in vivo accuracy of the Modified Look-Locker Inversion Recovery (MOLLI) cardiac T1 mapping sequence against the spin echo gold standard, which has not been done previously. T1 accuracy of MOLLI was ...
Sano Motoaki M Department of Cardiology, Keio University School of Medicine, Tokyo, - - 2014
Automatic measurement becomes a preference, and indeed a necessity, when analyzing 1000 s of ECGs in the setting of either drug-inducing QT prolongation screening or genome-wide association studies of QT interval. The problem is that individual manufacturers apply different computerized algorithms to measure QT interval. We conducted a comparative study ...
Xu Jason J JJ Schulich School of Medicine & Dentistry, University of Western Ontario Clinical Skills Building, Room 3700, London, ON, N6A 5C1, - - 2013
Background: The threshold size required to detect lymphadenopathy via palpation has never been formally determined. This study sought to determine the threshold, sensitivity, and error of node palpation and how this changes with experience. Methods: Lymphadenopathy models were created using poly-vinyl alcohol cryogel to mimic tissue tactility. Node diameter ranged ...
Howe Andrew - - 2013
Algorithms to predict shock success based on VF waveform metrics could significantly enhance resuscitation by optimising the timing of defibrillation. To investigate robust methods of predicting defibrillation success in VF cardiac arrest patients, by using a support vector machine (SVM) optimisation approach. Frequency-domain (AMSA, dominant frequency and median frequency) and ...
Roberts James G - - 2013
Technological advances have allowed background-subtracted fast-scan cyclic voltammetry to emerge as a powerful tool for monitoring molecular fluctuations in living brain tissue; however, there has been little progress to date in advancing electrode calibration procedures. Variability in the performance of these handmade electrodes renders calibration necessary for accurate quantification; however, ...
Lampert Adam A Department of Environmental Science and Policy, University of California, Davis, CA, 95616, - - 2014
A variety of ecological systems around the world have been damaged in recent years, either by natural factors such as invasive species, storms and global change or by direct human activities such as overfishing and water pollution. Restoration of these systems to provide ecosystem services entails significant economic benefits. Thus, ...
Le-Nguyen Tuong-Vu - - 2013
A paper sliceform or lattice-style pop-up is a form of papercraft that uses two sets of parallel paper patches slotted together to make a foldable structure. The structure can be folded flat, as well as fully opened (popped-up) to make the two sets of patches orthogonal to each other. Automatic ...
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