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https://www.readbyqxmd.com/read/28103558/effective-multi-query-expansions-collaborative-deep-networks-based-feature-learning-for-robust-landmark-retrieval
#1
Yang Wang, Xuemin Lin, Lin Wu, Wenjie Zhang
Given a query photo issued by a user (q-user), the landmark retrieval is to return a set of photos with their landmarks similar to those of the query, while the existing studies on the landmark retrieval focus on exploiting geometries of landmarks for similarity matches between candidate photos and a query photo. We observe that the same landmarks provided by different users over social media community may convey different geometry information depending on the viewpoints and/or angles, and may subsequently yield very different results...
January 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28100655/furosemide-depresses-the-presynaptic-fiber-volley-and-modifies-frequency-dependent-axonal-excitability-in-rat-hippocampus
#2
Mogens Andreasen, Steen Nedergaard
The loop diuretic furosemide is known to have anticonvulsant effects, believed to be exerted through blockade of glial Na-K-Cl cotransport causing altered volume regulation in brain tissue. The possibility that direct effects of furosemide on neuronal properties could also be involved is supported by previous observations, but such effects have not been thoroughly investigated. In the present study we show that furosemide has two opposing effects on stimulus-induced postsynaptic excitation in the non-epileptic rat hippocampal slice: i) an enhancement of e-s coupling, which depended on intact GABAA transmission and was partially mimicked by selective blockade of K-Cl cotransport, and ii) a decrement of fEPSPs...
January 18, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28095193/semisupervised-multilabel-multi-instance-learning-for-structured-data
#3
Hossein Soleimani, David J Miller
Many classification tasks require both labeling objects and determining label associations for parts of each object. Example applications include labeling segments of images or determining relevant parts of a text document when the training labels are available only at the image or document level. This task is usually referred to as multi-instance (MI) learning, where the learner typically receives a collection of labeled (or sometimes unlabeled) bags, each containing several segments (instances). We propose a semisupervised MI learning method for multilabel classification...
January 17, 2017: Neural Computation
https://www.readbyqxmd.com/read/28092591/relational-regularized-discriminative-sparse-learning-for-alzheimer-s-disease-diagnosis
#4
Baiying Lei, Peng Yang, Tianfu Wang, Siping Chen, Dong Ni
Accurate identification and understanding informative feature is important for early Alzheimer's disease (AD) prognosis and diagnosis. In this paper, we propose a novel discriminative sparse learning method with relational regularization to jointly predict the clinical score and classify AD disease stages using multimodal features. Specifically, we apply a discriminative learning technique to expand the class-specific difference and include geometric information for effective feature selection. In addition, two kind of relational information are incorporated to explore the intrinsic relationships among features and training subjects in terms of similarity learning...
January 16, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28092587/learning-domain-invariant-subspace-using-domain-features-and-independence-maximization
#5
Ke Yan, Lu Kou, David Zhang
Domain adaptation algorithms are useful when the distributions of the training and the test data are different. In this paper, we focus on the problem of instrumental variation and time-varying drift in the field of sensors and measurement, which can be viewed as discrete and continuous distributional change in the feature space. We propose maximum independence domain adaptation (MIDA) and semi-supervised MIDA to address this problem. Domain features are first defined to describe the background information of a sample, such as the device label and acquisition time...
January 16, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28092535/super-resolution-person-re-identification-with-semi-coupled-low-rank-discriminant-dictionary-learning
#6
Xiao-Yuan Jing, Xiaoke Zhu, Fei Wu, Ruimin Hu, Xinge You, Yunhong Wang, Hui Feng, Jing-Yu Yang
Person re-identification has been widely studied due to its importance in surveillance and forensics applications. In practice, gallery images are high-resolution (HR) while probe images are usually low-resolution (LR) in the identification scenarios with large variation of illumination, weather or quality of cameras. Person re-identification in this kind of scenarios, which we call super-resolution (SR) person re-identification, has not been well studied. In this paper, we propose a semi-coupled low-rank discriminant dictionary learning (SLD2L) approach for SR person re-identification task...
January 10, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28090334/an-experimental-validation-of-genomic-selection-in-octoploid-strawberry
#7
Salvador A Gezan, Luis F Osorio, Sujeet Verma, Vance M Whitaker
The primary goal of genomic selection is to increase genetic gains for complex traits by predicting performance of individuals for which phenotypic data are not available. The objective of this study was to experimentally evaluate the potential of genomic selection in strawberry breeding and to define a strategy for its implementation. Four clonally replicated field trials, two in each of 2 years comprised of a total of 1628 individuals, were established in 2013-2014 and 2014-2015. Five complex yield and fruit quality traits with moderate to low heritability were assessed in each trial...
2017: Horticulture Research
https://www.readbyqxmd.com/read/28088616/patient-agency-and-contested-notions-of-disability-in-social-assistance-applications-in-south-africa
#8
Gabrielle Kelly
Problems in fairly allocating welfare and health resources are very often located in the spaces where citizens interact directly with state workers. This study draws on observations of doctor-patient encounters in disability assessments for the South African disability grant (DG) to examine how doctor-patient interactions and patient agency shape social welfare allocation in a context of high poverty and inequality. Data were gathered via interviews with healthcare workers and observations of doctor-patient interactions in twelve clinics and three hospitals in the Western Cape province between October 2013 and August 2014...
January 9, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28086895/design-optimization-of-stent-and-its-dilatation-balloon-using-kriging-surrogate-model
#9
Hongxia Li, Tao Liu, Minjie Wang, Danyang Zhao, Aike Qiao, Xue Wang, Junfeng Gu, Zheng Li, Bao Zhu
BACKGROUND: Although stents have great success of treating cardiovascular disease, it actually undermined by the in-stent restenosis and their long-term fatigue failure. The geometry of stent affects its service performance and ultimately affects its fatigue life. Besides, improper length of balloon leads to transient mechanical injury to the vessel wall and in-stent restenosis. Conventional optimization method of stent and its dilatation balloon by comparing several designs and choosing the best one as the optimal design cannot find the global optimal design in the design space...
January 11, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28081223/high-intensity-jump-training-is-tolerated-during-60-days-of-bed-rest-and-is-very-effective-in-preserving-leg-power-and-lean-body-mass-an-overview-of-the-cologne-rsl-study
#10
Andreas Kramer, Jakob Kümmel, Edwin Mulder, Albert Gollhofer, Petra Frings-Meuthen, Markus Gruber
PURPOSE: Space agencies are looking for effective and efficient countermeasures for the degrading effects of weightlessness on the human body. The aim of this study was to assess the effects of a novel jump exercise countermeasure during bed rest on vitals, body mass, body composition, and jump performance. METHODS: 23 male participants (29±6 years, 181±6 cm, 77±7 kg) were confined to a bed rest facility for 90 days: a 15-day ambulatory measurement phase, a 60-day six-degree head-down-tilt bed rest phase (HDT), and a 15-day ambulatory recovery phase...
2017: PloS One
https://www.readbyqxmd.com/read/28074704/the-toxicology-of-zinc-chloride-smoke-producing-bombs-and-screens
#11
Ayman El Idrissi, Lisanne van Berkel, Nadia E Bonekamp, Diana J Z Dalemans, Marcel A G van der Heyden
CONTEXT: Zinc chloride (ZnCl2)-based smoke bombs and screens are in use since the Second World War (1939-1945). Many case descriptions on ZnCl2 smoke inhalation incidents appeared since 1945. OBJECTIVE: We provide a comprehensive overview of the clinical symptoms and underlying pathophysiology due to exposure to fumes from ZnCl2 smoke producing bombs. In addition, we give a historical overview of treatment regimens and their outcomes. METHODOLOGY: We performed a literature search on Medline, Scopus and Google Scholar databases using combinations of the following search terms "smoke bomb", "smoke screen", "ZnCl2", "intoxication", "poisoning", "case report", "HE smoke", "hexachloroethane smoke", "smoke inhalation" and "white smoke"...
January 11, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28074609/rapid-chemical-shift-encoding-with-single-acquisition-single-slab-3d-grase
#12
Hahnsung Kim, Dong-Hyun Kim, Chul-Ho Sohn, Jaeseok Park
PURPOSE: To investigate the feasibility of chemical shift encoded, single-slab 3D GRASE for rapid fat-water separation within a single acquisition. METHODS: The proposed method incorporates signal-to-noise-ratio-optimal chemical shift encoding into single-slab 3D GRASE with variable flip angles. Chemical shift induced phase information was encoded in succession to different positions in k-space by inserting phase encoding blips between adjacent lobes of the oscillating readout gradients...
January 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28073936/human-exploration-of-enclosed-spaces-through-echolocation
#13
Virginia L Flanagin, Sven Schörnich, Michael Schranner, Nadine Hummel, Ludwig Wallmeier, Magnus Wahlberg, Thomas Stephan, Lutz Wiegrebe
: Some blind humans have developed echolocation, as a method of navigation in space. Echolocation is a truly active sense because subjects analyze echoes of dedicated, self-generated sounds to assess space around them. Using a special virtual space technique we assess how humans perceive enclosed spaces through echolocation, thereby revealing the interplay between sensory and vocal-motor neural activity while humans perform this task. Sighted subjects were trained to detect small changes in virtual room size analyzing real-time generated echoes of their vocalizations...
January 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28065851/high-resolution-distortion-free-diffusion-imaging-using-hybrid-spin-warp-and-echo-planar-psf-encoding-approach
#14
Myung-Ho In, Oleg Posnansky, Oliver Speck
High-resolution diffusion-weighted imaging (DWI) has great potential to provide unique information about tissue microstructure in-vivo. Although single-shot echo-planar imaging (EPI) is a most popular tool for DWI, its application for high-resolution DWI is limited due to T2⁎ blurring and susceptibility- and eddy-current-induced geometric distortions, especially at ultra-high field (UHF) such as 7T. In this study, we adapt a hybrid spin-warp and echo-planar encoding strategy inspired by point spread function (PSF) mapping and optimize it for high-resolution and distortion-free diffusion imaging applications...
January 5, 2017: NeuroImage
https://www.readbyqxmd.com/read/28063848/challenges-with-implementing-a-patient-centered-medical-home-model-for-women-veterans
#15
Emmeline Chuang, Julian Brunner, Selene Mak, Alison B Hamilton, Ismelda Canelo, Jill Darling, Lisa V Rubenstein, Elizabeth M Yano
BACKGROUND: The Veterans Health Administration (VA) Patient Aligned Care Team (PACT) initiative aims to ensure that all patients receive care consistent with medical home principles. Women veterans' unique care needs and minority status within the VA pose challenges to delivery of equitable, comprehensive primary care for this population. Currently, little is known about whether and/or how PACT should be tailored to better meet women veteran needs. METHODS: In 2014, we conducted semistructured interviews with 73 primary care providers and staff to examine facilitators and barriers encountered in providing PACT-principled care to women veterans...
January 4, 2017: Women's Health Issues: Official Publication of the Jacobs Institute of Women's Health
https://www.readbyqxmd.com/read/28063436/the-many-body-expansion-combined-with-neural-networks
#16
Kun Yao, John E Herr, John Parkhill
Fragmentation methods such as the many-body expansion (MBE) are a common strategy to model large systems by partitioning energies into a hierarchy of decreasingly significant contributions. The number of calculations required for chemical accuracy is still prohibitively expensive for the ab initio MBE to compete with force field approximations for applications beyond single-point energies. Alongside the MBE, empirical models of ab initio potential energy surfaces have improved, especially non-linear models based on neural networks (NNs) which can reproduce ab initio potential energy surfaces rapidly and accurately...
January 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28062341/implementation-and-impact-of-patient-lay-navigator-led-advance-care-planning-conversations
#17
Gabrielle B Rocque, J Nicholas Dionne-Odom, Chao-Hui Sylvia Huang, Soumya J Niranjan, Courtney P Williams, Bradford E Jackson, Karina I Halilova, Kelly M Kenzik, Kerri S Bevis, Audrey S Wallace, Nedra Lisovicz, Richard A Taylor, Maria Pisu, Edward E Partridge, Linda A Briggs, Elizabeth A Kvale
CONTEXT: Advance care planning (ACP) improves alignment between patient preferences for life-sustaining treatment and care received at end of life (EOL). OBJECTIVES: To evaluate implementation of lay navigator-led ACP. METHODS: A convergent, parallel mixed-methods design was employed to evaluate implementation of navigator-led ACP across 12 cancer centers. Data collection included: (1) electronic navigation records, (2) navigator surveys (n=45), (3) claims-based patient outcomes (n=820), and (4) semi-structured navigator interviews (n=26)...
January 3, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28061002/closed-form-expressions-for-flip-angle-variation-that-maximize-total-signal-in-t1-weighted-rapid-gradient-echo-mri
#18
Matthias Drobnitzky, Uwe Klose
PURPOSE: Magnetization-prepared rapid gradient-echo (MPRAGE) sequences are commonly employed for T1-weighted structural brain imaging. Following a contrast preparation radiofrequency (RF) pulse the data acquisition proceeds under non-equilibrium conditions of the relaxing longitudinal magnetization. Variation of the flip angle can be used to maximize total available signal. Simulated annealing or greedy algorithms have so far been published to numerically solve this problem, with signal to noise ratios optimized for clinical imaging scenarios by adhering to a predefined shape of the signal evolution...
January 6, 2017: Medical Physics
https://www.readbyqxmd.com/read/28059221/implicit-kernel-sparse-shape-representation-a-sparse-neighbors-based-objection-segmentation-framework
#19
Jincao Yao, Huimin Yu, Roland Hu
This paper introduces a new implicit-kernel-sparse-shape-representation-based object segmentation framework. Given an input object whose shape is similar to some of the elements in the training set, the proposed model can automatically find a cluster of implicit kernel sparse neighbors to approximately represent the input shape and guide the segmentation. A distance-constrained probabilistic definition together with a dualization energy term is developed to connect high-level shape representation and low-level image information...
January 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28056566/large-scale-classification-of-p-glycoprotein-inhibitors-using-smiles-based-descriptors
#20
V Prachayasittikul, A Worachartcheewan, A P Toropova, A A Toropov, N Schaduangrat, V Prachayasittikul, C Nantasenamat
P-glycoprotein (Pgp) inhibition has been considered as an effective strategy towards combating multidrug-resistant cancers. Owing to the substrate promiscuity of Pgp, the classification of its interacting ligands is not an easy task and is an ongoing issue of debate. Chemical structures can be represented by the simplified molecular input line entry system (SMILES) in the form of linear string of symbols. In this study, the SMILES notations of 2254 Pgp inhibitors including 1341 active, and 913 inactive compounds were used for the construction of a SMILE-based classification model using CORrelation And Logic (CORAL) software...
January 6, 2017: SAR and QSAR in Environmental Research
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