keyword
MENU ▼
Read by QxMD icon Read
search

Statistical model

keyword
https://www.readbyqxmd.com/read/27914310/electrical-potentials-measured-on-the-surface-of-the-knee-reflect-the-changes-of-the-contact-force-in-the-knee-joint-produced-by-postural-sway
#1
Lin Zhu, Martin Garon, Éric Quenneville, Michael D Buschmann, Pierre Savard
Electroarthrography (EAG) is a novel technique for recording potentials on the knee surface that are generated by the compression of articular cartilage and that reflect both compression force and cartilage quality. The mechanical loading of the knee is achieved by transferring the subject's body weight from a bipedal stance to a unipedal stance. We hypothesized that EAG potentials change with postural sway. The study was performed on 20 normal subjects (10 male, 10 female; age 29±10.5 yrs.; mass 68.8±14...
October 18, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27914306/a-contactless-ultrasonic-surface-wave-approach-to-characterize-distributed-cracking-damage-in-concrete
#2
Suyun Ham, Homin Song, Michael L Oelze, John S Popovics
We describe an approach that utilizes ultrasonic surface wave backscatter measurements to characterize the volume content of relatively small distributed defects (microcrack networks) in concrete. A simplified weak scattering model is used to demonstrate that the scattered wave field projected in the direction of the surface wave propagation is relatively insensitive to scatterers that are smaller than the propagating wavelength, while the scattered field projected in the opposite direction is more sensitive to sub-wavelength scatterers...
November 9, 2016: Ultrasonics
https://www.readbyqxmd.com/read/27914277/accurate-assessment-of-the-weight-of-evidence-for-dna-mixtures-by-integrating-the-likelihood-ratio
#3
Klaas Slooten
Several methods exist for weight of evidence calculations on DNA mixtures. Especially if dropout is a possibility, it may be difficult to estimate mixture specific parameters needed for the evaluation. For semi-continuous models, the LR for a person to have contributed to a mixture depends on the specified number of contributors and the probability of dropout for each. We show here that, for the semi-continuous model that we consider, the weight of evidence can be accurately obtained by applying the standard statistical technique of integrating the likelihood ratio against the parameter likelihoods obtained from the mixture data...
November 16, 2016: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/27914153/-pulmonary-embolism-in-portugal-epidemiology-and-in-hospital-mortality
#4
Miguel Gouveia, Luís Pinheiro, João Costa, Margarida Borges
INTRODUCTION: In Portugal, the epidemiology of acute pulmonary embolism is poorly understood. In this study, we sought to characterize the pulmonary embolism from the hospital data and evaluate its in-hospital mortality and respective prognostic factors. MATERIAL AND METHODS: The study used diagnostic related groups data from National Health System hospitals from 2003 to 2013 and National Statistics Institute population data to establish the evolution of admissions with the diagnosis of pulmonary embolism, their inhospital mortality rates and the population incidence rates...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27914102/examining-temporal-effects-on-cancer-risk-in-the-international-nuclear-workers-study-inworks
#5
Robert D Daniels, Stephen J Bertke, David B Richardson, Elisabeth Cardis, Michael Gillies, Jacqueline A O'Hagan, Richard Haylock, Dominique Laurier, Klervi Leuraud, Monika Moissonnier, Isabelle Thierry-Chef, Ausrele Kesminiene, Mary K Schubauer-Berigan
The paper continues the series of publications from the International Nuclear Workers Study cohort (INWORKS) that comprises 308,297 workers from France, the United Kingdom and the United States, providing 8.2 million person-years of observation from a combined follow-up period (at earliest 1944 to at latest 2005). These workers' external radiation exposures were primarily to photons, resulting in an estimated average career absorbed dose to the colon of 17.4 milligray. The association between cumulative ionizing radiation dose and cancer mortality was evaluated in general relative risk models that describe modification of the excess relative risk (ERR) per gray (Gy) by time since exposure and age at exposure...
December 3, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27913880/forensic-3d-documentation-of-skin-injuries
#6
Chiara Villa
An accurate and precise documentation of injuries is fundamental in a forensic pathological context. Photographs and manual measurements are taken of all injuries during autopsies, but ordinary photography projects a 3D wound on a 2D space. Using technologies such as photogrammetry, it is possible to create 3D detailed, to-scale, true-color documentation of skin injuries from 2D pictures. A comparison between the measurements of 165 lesions taken during autopsies and on photogrammetrically processed pictures was performed...
December 2, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27913872/treatment-for-6%C3%A2-months-with-fish-oil-derived-n-3-polyunsaturated-fatty-acids-has-neutral-effects-on-glycemic-control-but-improves-dyslipidemia-in-type-2-diabetic-patients-with-abdominal-obesity-a-randomized-double-blind-placebo-controlled-trial
#7
Feng Wang, Yanyan Wang, Yan Zhu, Xiaosong Liu, Hui Xia, Xian Yang, Guiju Sun
PURPOSE: This study aimed to determine the effects of fish oil-derived n-3 PUFA on glycemic control and lipid profiles in type 2 diabetic patients with abdominal obesity. METHODS: In a randomized, double-blind, placebo-controlled trial, 100 type 2 diabetic patients with abdominal obesity were randomized into two groups including 4 g/day of fish oil (2.4 g n-3 PUFA) or placebo (corn oil) for 6 months. Serum fatty acid, body composition, as well as markers of glucose regulation and lipid parameters were measured before and after intervention...
December 2, 2016: European Journal of Nutrition
https://www.readbyqxmd.com/read/27913729/qsea-modelling-of-genome-wide-dna-methylation-from-sequencing-enrichment-experiments
#8
Matthias Lienhard, Sabrina Grasse, Jana Rolff, Steffen Frese, Uwe Schirmer, Michael Becker, Stefan Börno, Bernd Timmermann, Lukas Chavez, Holger Sültmann, Gunda Leschber, Iduna Fichtner, Michal R Schweiger, Ralf Herwig
Genome-wide enrichment of methylated DNA followed by sequencing (MeDIP-seq) offers a reasonable compromise between experimental costs and genomic coverage. However, the computational analysis of these experiments is complex, and quantification of the enrichment signals in terms of absolute levels of methylation requires specific transformation. In this work, we present QSEA, Quantitative Sequence Enrichment Analysis, a comprehensive workflow for the modelling and subsequent quantification of MeDIP-seq data...
December 1, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27913657/cost-benefit-analysis-of-telehealth-in-pre-hospital-care
#9
James R Langabeer, Tiffany Champagne-Langabeer, Diaa Alqusairi, Junghyun Kim, Adria Jackson, David Persse, Michael Gonzalez
OBJECTIVE: There has been very little use of telehealth in pre-hospital emergency medical services (EMS), yet the potential exists for this technology to transform the current delivery model. In this study, we explore the costs and benefits of one large telehealth EMS initiative. METHODS: Using a case-control study design and both micro- and gross-costing data from the Houston Fire Department EMS electronic patient care record system, we conducted a cost-benefit analysis (CBA) comparing costs with potential savings associated with patients treated through a telehealth-enabled intervention...
December 2, 2016: Journal of Telemedicine and Telecare
https://www.readbyqxmd.com/read/27913371/multiview-convolutional-neural-networks-for-multidocument-extractive-summarization
#10
Yong Zhang, Meng Joo Er, Rui Zhao, Mahardhika Pratama
Multidocument summarization has gained popularity in many real world applications because vital information can be extracted within a short time. Extractive summarization aims to generate a summary of a document or a set of documents by ranking sentences and the ranking results rely heavily on the quality of sentence features. However, almost all previous algorithms require hand-crafted features for sentence representation. In this paper, we leverage on word embedding to represent sentences so as to avoid the intensive labor in feature engineering...
November 28, 2016: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/27913350/guided-wavelet-shrinkage-for-edge-aware-smoothing
#11
Guang Deng
Edge-aware smoothing has been extensively studied due to its wide range of applications in computer vision and graphics.Most published works have been focused on formulating the smoothing problem in the spatial domain. In this paper, we propose a new edge-aware smoothing framework called guided wavelet shrinkage (GWS) which is formulated in the wavelet domain as a maximum a posterior estimation problem. We impose a number of desirable properties on the statistical models and the associated parameters in order to derive an effective and computationally efficient algorithm...
December 1, 2016: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/27913348/automatic-refinement-strategies-for-manual-initialization-of-object-trackers
#12
Hao Zhu, Fatih Porikli
Tracking objects across multiple frames is a wellinvestigated problem in computer vision. The majority of the existing algorithms assume an accurate initialization is readily available. However, in many real-life settings, in particular for applications where the video is streaming in real-time, the initialization has to be provided by a human operator. This limitation raises an inevitable uncertainty issue. Here, we first collect a large and new dataset of inputs that consists of more than 20K human initialization clicks, called as HIC, by several subjects under three practical user interface scenarios for the popular TB50 tracking benchmark...
December 1, 2016: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/27913324/beamforming-through-regularized-inverse-problems-in-ultrasound-medical-imaging
#13
Teodora Szasz, Adrian Basarab, Denis Kouame
Beamforming (BF) in ultrasound (US) imaging has significant impact on the quality of the final image, controlling its resolution and contrast. Despite its low spatial resolution and contrast, delay-and-sum (DAS) is still extensively used nowadays in clinical applications, due to its real-time capabilities. The most common alternatives are minimum variance (MV) method and its variants, which overcome the drawbacks of DAS, at the cost of higher computational complexity that limits its utilization in real-time applications...
December 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27913279/a-randomised-clinical-in-situ-study-to-evaluate-the-effects-of-novel-low-abrasivity-anti-sensitivity-dentifrices-on-dentine-wear
#14
J Seong, C Hall, S Young, C Parkinson, E Macdonald, S Bodfel Jones, N X West
OBJECTIVES: To compare the abrasive wear on human dentine in an in situ model associated with use of an experimental low abrasivity anti-sensitivity dentifrice containing 1% alumina and 5% sodium tripolyphosphate (STP) with an experimental ultra-low abrasivity non-alumina 5% STP dentifrice, a higher abrasivity daily-use whitening dentifrice, and water as controls. METHODS: This was a single-centre, single-blind, randomised, split-mouth, four-treatment, two-period, crossover in situ study in 29 healthy subjects...
November 29, 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27913258/an-experimental-study-on-the-effects-of-smoking-in-the-perinatal-period-and-during-lactation-on-the-intervertebral-discs-of-newborns
#15
Idiris Altun, Kasım Z Yuksel
OBJECTIVE: To evaluate the histopathological effects of smoking before, during and after pregnancy on the intervertebral disc structure of the newborns in an experimental rat model. METHODS: Seven adult female Wistar Albino rats were randomly allocated into 7 groups. Nicotine (2 mg/kg/day) was intraperitoneally introduced to these rats in 6 groups before, during and after pregnancy, while the rat in the control group received isotonic saline intraperitoneally. Fourteen newborns delivered by each rat were sacrificed at the end of 9 weeks after being breastfed for 3 weeks after birth...
November 29, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27913152/development-and-validation-of-an-objective-scoring-tool-for-robot-assisted-radical-prostatectomy-prostatectomy-assessment-and-competency-evaluation-pace
#16
Ahmed A Hussein, Khurshid R Ghani, James Peabody, Richard Sarle, Ronney Abaza, Daniel Eun, Jim Hu, Michael Fumo, Brian Lane, Jeffrey Montgomery, Nobuyuki Hinata, Deborah Rooney, Bryan Comstock, Hei Kit Chan, Sridhar S Mane, James L Mohler, Gregory Wilding, David Miller, Khurshid A Guru
INTRODUCTION: and Background: Comprehensive training and skill acquisition by urologic surgeons are vital to optimize surgical outcomes and patient safety. We sought to develop and validate an objective and procedure specific tool to assess the quality of robot-assisted radical prostatectomy (RARP)-Prostatectomy Assessment and Competence Evaluation (PACE) METHODS: Development and content validation of PACE was performed by deconstruction of RARP into seven key domains utilizing the Delphi methodology...
November 29, 2016: Journal of Urology
https://www.readbyqxmd.com/read/27913138/compared-in-vivo-efficiency-of-nanoemulsions-unloaded-and-loaded-with-calixarene-and-soapy-water-in-the-treatment-of-superficial-wounds-contaminated-by-uranium
#17
Sophie Grivès, Guillaume Phan, Céline Bouvier-Capely, David Suhard, François Rebière, Michelle Agarande, Elias Fattal
No emergency decontamination treatment is currently available in the case of radiological skin contamination by uranium compounds. First responders in the workplace or during an industrial nuclear accident must be able to treat internal contamination through skin. For this purpose, a calixarene nanoemulsion was developed for the treatment of intact skin or superficial wounds contaminated by uranium, and the decontamination efficiency of this nanoemulsion was investigated in vitro and ex vivo. The present work addresses the in vivo decontamination efficiency of this nanoemulsion, using a rat model...
November 29, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27913107/the-influence-of-iterative-reconstruction-on-coronary-artery-calcium-scoring-phantom-and-clinical-studies
#18
Seitaro Oda, Daisuke Utsunomiya, Takeshi Nakaura, Yoshinori Funama, Hideaki Yuki, Masafumi Kidoh, Kenichiro Hirata, Narumi Taguchi, Keiichi Honda, Hiroko Takaoka, Yuji Iyama, Kazuhiro Katahira, Katsuo Noda, Shuichi Oshima, Shinichi Tokuyasu, Yasuyuki Yamashita
RATIONALE AND OBJECTIVES: We compared the effect of iterative model reconstruction (IMR), filtered back projection (FBP), and hybrid iterative reconstruction (HIR) on coronary artery calcium (CAC) scoring. MATERIALS AND METHODS: CAC scans of 30 consecutive patients (18 men and 12 women, age 70.1 ± 12.2 years) were reconstructed with FBP, HIR, and IMR, and the image noise was measured on all images. Two radiologists independently measured the CAC scores using semiautomated software, and interobserver agreement was evaluated...
November 29, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27913058/effect-of-urea-on-protein-ligand-association
#19
Lora Stepanian, Ikbae Son, Tigran V Chalikian
We combine experimental and theoretical approaches to investigate the influence of a cosolvent on a ligand-protein association event. We apply fluorescence measurements to determining the affinity of the inhibitor tri-N-acetylglucosamine [(GlcNAc)3] for lysozyme at urea concentrations ranging from 0 to 8M. Notwithstanding that, at room temperature and neutral pH, lysozyme retains its native conformation up to the solubility limit of urea, the affinity of (GlcNAc)3 for the protein steadily decreases as the concentration of urea increases...
November 25, 2016: Biophysical Chemistry
https://www.readbyqxmd.com/read/27913025/mapping-monthly-rainfall-erosivity-in-europe
#20
Cristiano Ballabio, Pasquale Borrelli, Jonathan Spinoni, Katrin Meusburger, Silas Michaelides, Santiago Beguería, Andreas Klik, Sašo Petan, Miloslav Janeček, Preben Olsen, Juha Aalto, Mónika Lakatos, Anna Rymszewicz, Alexandru Dumitrescu, Melita Perčec Tadić, Nazzareno Diodato, Julia Kostalova, Svetla Rousseva, Kazimierz Banasik, Christine Alewell, Panos Panagos
Rainfall erosivity as a dynamic factor of soil loss by water erosion is modelled intra-annually for the first time at European scale. The development of Rainfall Erosivity Database at European Scale (REDES) and its 2015 update with the extension to monthly component allowed to develop monthly and seasonal R-factor maps and assess rainfall erosivity both spatially and temporally. During winter months, significant rainfall erosivity is present only in part of the Mediterranean countries. A sudden increase of erosivity occurs in major part of European Union (except Mediterranean basin, western part of Britain and Ireland) in May and the highest values are registered during summer months...
November 29, 2016: Science of the Total Environment
keyword
keyword
84292
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"