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https://www.readbyqxmd.com/read/28644816/fast-and-accurate-poisson-denoising-with-trainable-nonlinear-diffusion
#1
Wensen Feng, Peng Qiao, Yunjin Chen
The degradation of the acquired signal by Poisson noise is a common problem for various imaging applications, such as medical imaging, night vision, and microscopy. Up to now, many state-of-the-art Poisson denoising techniques mainly concentrate on achieving utmost performance, with little consideration for the computation efficiency. Therefore, in this paper we aim to propose an efficient Poisson denoising model with both high computational efficiency and recovery quality. To this end, we exploit the newly developed trainable nonlinear reaction diffusion (TNRD) model which has proven an extremely fast image restoration approach with performance surpassing recent state-of-the-arts...
June 20, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28644808/esim-edge-similarity-for-screen-content-image-quality-assessment
#2
Zhangkai Ni, Lin Ma, Huanqiang Zeng, Jing Chen, Canhui Cai, Kai-Kuang Ma
In this paper, an accurate full-reference image quality assessment (IQA) model developed for assessing screen content images (SCIs), called the edge similarity (ESIM), is proposed. It is inspired by the fact that the human visual system (HVS) is highly sensitive to edges that are often encountered in SCIs; therefore, essential edge features are extracted and exploited for conducting IQA for the SCIs. The key novelty of the proposed ESIM lies in the extraction and use of three salient edge features-i.e., edge contrast, edge width, and edge direction...
June 21, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28644797/spatiotemporal-gmm-for-background-subtraction-with-superpixel-hierarchy
#3
Mingliang Chen, Xing Wei, Qingxiong Yang, Qing Li, Gang Wang, Ming-Hsuan Yang
We propose a background subtraction algorithm using hierarchical superpixel segmentation, spanning trees and optical flow. First, we generate superpixel segmentation trees using a number of Gaussian Mixture Models (GMMs) by treating each GMM as one vertex to construct spanning trees. Next, we use the M-smoother to enhance the spatial consistency on the spanning trees and estimate optical flow to extend the M-smoother to the temporal domain. Experimental results on synthetic and real-world benchmark datasets show that the proposed algorithm performs favorably for background subtraction in videos against the state-of-the-art methods in spite of frequent and sudden changes of pixel values...
June 21, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28643394/incorporating-deep-learning-with-convolutional-neural-networks-and-position-specific-scoring-matrices-for-identifying-electron-transport-proteins
#4
Nguyen-Quoc-Khanh Le, Quang-Thai Ho, Yu-Yen Ou
In several years, deep learning is a modern machine learning technique using in a variety of fields with state-of-the-art performance. Therefore, utilization of deep learning to enhance performance is also an important solution for current bioinformatics field. In this study, we try to use deep learning via convolutional neural networks and position specific scoring matrices to identify electron transport proteins, which is an important molecular function in transmembrane proteins. Our deep learning method can approach a precise model for identifying of electron transport proteins with achieved sensitivity of 80...
June 22, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28643104/-endovenous-ablation-versus-open-surgery-for-varicose-veins-an%C3%A2-attempt-at-an-evaluation
#5
REVIEW
K Hartmann, D Stenger, M Hartmann, L Rafi-Stenger
Open and endovenous surgery of varicose veins provides an excellent way to treat varicose veins. However, there are great differences in the how the techniques are performed. No matter which procedure is carried out, there are standards that should be observed. The state of the art of open venous surgery with radical crossectomy is well-known, but unfortunately is still not always performed correctly nowadays. The state of the art of endovenous surgery has unfortunately not yet been sufficiently documented, but should be based on open-surgical techniques...
June 22, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28641274/an-efficient-multiple-variants-coordination-framework-for-differential-evolution
#6
Sheng Xin Zhang, Shao Yong Zheng, Li Ming Zheng
Differential evolution (DE) is recognized as a simple but powerful algorithm in the family of evolutionary algorithms. Over the past two decades, many advanced DE variants with significantly improved performance have been proposed. However, the variants may only achieve the best performance on a certain type of functions. Moreover, a specific optimizer may not always be suitable for the whole optimization process. To overcome these weaknesses, this paper proposes a multiple variants coordination (MVC) framework with two mechanisms, namely, the multiple variants adaptive selecting mechanism and the multiple variants adaptive solutions preserving mechanisms (MV-APM)...
June 19, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28641271/joint-attributes-and-event-analysis-for-multimedia-event-detection
#7
Zhigang Ma, Xiaojun Chang, Zhongwen Xu, Nicu Sebe, Alexander G Hauptmann
Semantic attributes have been increasingly used the past few years for multimedia event detection (MED) with promising results. The motivation is that multimedia events generally consist of lower level components such as objects, scenes, and actions. By characterizing multimedia event videos with semantic attributes, one could exploit more informative cues for improved detection results. Much existing work obtains semantic attributes from images, which may be suboptimal for video analysis since these image-inferred attributes do not carry dynamic information that is essential for videos...
June 15, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28641246/gracker-a-graph-based-planar-object-tracker
#8
Tao Wang, Haibin Ling
Matching-based algorithms have been commonly used in planar object tracking. They often model a planar object as a set of keypoints, and then find correspondences between keypoint sets via descriptor matching. In previous work, unary constraints on appearances or locations are usually used to guide the matching. However, these approaches rarely utilize structure information of the object, and are thus suffering from various perturbation factors. In this paper, we proposed a graph-based tracker, named Gracker, which is able to fully explore the structure information of the object to enhance tracking performance...
June 16, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28640675/health-related-quality-of-life-among-us-workers-variability-across-occupation-groups
#9
Taylor M Shockey, Matthew Zack, Aaron Sussell
OBJECTIVES: To examine the health-related quality of life among workers in 22 standard occupation groups using data from the 2013-2014 US Behavioral Risk Factor Surveillance System. METHODS: We examined the health-related quality of life measures of self-rated health, frequent physical distress, frequent mental distress, frequent activity limitation, and frequent overall unhealthy days by occupation group for 155 839 currently employed adults among 17 states. We performed multiple logistic regression analyses that accounted for the Behavioral Risk Factor Surveillance System's complex survey design to obtain prevalence estimates adjusted for potential confounders...
June 22, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28639347/high-energy-power-and-low-temperature-cathode-for-sodium-ion-batteries-in-situ-xrd-study-and-superior-full-cell-performance
#10
Jin-Zhi Guo, Peng-Fei Wang, Xing-Long Wu, Xiao-Hua Zhang, Qingyu Yan, Hong Chen, Jing-Ping Zhang, Yu-Guo Guo
Sodium-ion batteries (SIBs) are still confronted with several major challenges, including low energy and power densities, short-term cycle life, and poor low-temperature performance, which severely hinder their practical applications. Here, a high-voltage cathode composed of Na3 V2 (PO4 )2 O2 F nano-tetraprisms (NVPF-NTP) is proposed to enhance the energy density of SIBs. The prepared NVPF-NTP exhibits two high working plateaux at about 4.01 and 3.60 V versus the Na(+) /Na with a specific capacity of 127.8 mA h g(-1) ...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28638780/materials-design-and-system-construction-for-conventional-and-new-concept-supercapacitors
#11
REVIEW
Zhong Wu, Lin Li, Jun-Min Yan, Xin-Bo Zhang
With the development of renewable energy and electrified transportation, electrochemical energy storage will be more urgent in the future. Supercapacitors have received extensive attention due to their high power density, fast charge and discharge rates, and long-term cycling stability. During past five years, supercapacitors have been boomed benefited from the development of nanostructured materials synthesis and the promoted innovation of devices construction. In this review, we have summarized the current state-of-the-art development on the fabrication of high-performance supercapacitors...
June 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28638442/computational-dynamic-approaches-for-temporal-omics-data-with-applications-to-systems-medicine
#12
REVIEW
Yulan Liang, Arpad Kelemen
Modeling and predicting biological dynamic systems and simultaneously estimating the kinetic structural and functional parameters are extremely important in systems and computational biology. This is key for understanding the complexity of the human health, drug response, disease susceptibility and pathogenesis for systems medicine. Temporal omics data used to measure the dynamic biological systems are essentials to discover complex biological interactions and clinical mechanism and causations. However, the delineation of the possible associations and causalities of genes, proteins, metabolites, cells and other biological entities from high throughput time course omics data is challenging for which conventional experimental techniques are not suited in the big omics era...
2017: BioData Mining
https://www.readbyqxmd.com/read/28637243/nanopore-sequencing-data-analysis-state-of-the-art-applications-and-challenges
#13
Alberto Magi, Roberto Semeraro, Alessandra Mingrino, Betti Giusti, Romina D'Aurizio
The nanopore sequencing process is based on the transit of a DNA molecule through a nanoscopic pore, and since the 90s is considered as one of the most promising approaches to detect polymeric molecules. In 2014, Oxford Nanopore Technologies (ONT) launched a beta-testing program that supplied the scientific community with the first prototype of a nanopore sequencer: the MinION. Thanks to this program, several research groups had the opportunity to evaluate the performance of this novel instrument and develop novel computational approaches for analyzing this new generation of data...
June 16, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28637183/nuclitrack-an-integrated-nuclei-tracking-application
#14
Sam Cooper, Alexis R Barr, Robert Glen, Chris Bakal
Summary: Live imaging studies give unparalleled insight into dynamic single cell behaviours and fate decisions. However, the challenge of reliably tracking single cells over long periods of time limits both the throughput and ease with which such studies can be performed. Here, we present NucliTrack, a cross platform solution for automatically segmenting, tracking and extracting features from fluorescently-labelled nuclei. NucliTrack performs similarly to other state-of-the-art cell tracking algorithms, but NucliTrack's interactive, graphical interface makes it significantly more user friendly...
June 20, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28635079/oxygen-vacancy-mediated-photocatalysis-of-biocl-reactivity-selectivity-and-perspective
#15
Hao Li, Jie Li, Zhihui Ai, Falong Jia, Lizhi Zhang
Semiconductor photocatalysis is a trustworthy approach to harvest clean solar light for energy conversions, while state-of-the-art catalytic efficiencies are unsatisfactory because of the finite light response and/or robust charge carriers' recombination. Along with the development of modern material characterization techniques and electronic-structure computations, oxygen vacancies (OVs) on real photocatalysts surface, even in infinitesimal concentration, are found to play a more decisive role in determining the kinetics, energetics and mechanisms of photocatalytic reactions...
June 20, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28634788/consistent-reconstruction-of-4d-fetal-heart-ultrasound-images-to-cope-with-fetal-motion
#16
Christine Tanner, Barbara Flach, Céline Eggenberger, Oliver Mattausch, Michael Bajka, Orcun Goksel
PURPOSE: 4D ultrasound imaging of the fetal heart relies on reconstructions from B-mode images. In the presence of fetal motion, current approaches suffer from artifacts, which are unrecoverable for single sweeps. METHODS: We propose to use many sweeps and exploit the resulting redundancy to automatically recover from motion by reconstructing a 4D image which is consistent in phase, space, and time. An interactive visualization framework to view animated ultrasound slices from 4D reconstructions on arbitrary planes was developed using a magnetically tracked mock probe...
June 20, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28634385/vertical-and-bevel-structured-sic-etching-techniques-incorporating-different-gas-mixture-plasmas-for-various-microelectronic-applications
#17
Ho-Kun Sung, Tian Qiang, Zhao Yao, Yang Li, Qun Wu, Hee-Kwan Lee, Bum-Doo Park, Woong-Sun Lim, Kyung-Ho Park, Cong Wang
This study presents a detailed fabrication method, together with validation, discussion, and analysis, for state-of-the-art silicon carbide (SiC) etching of vertical and bevelled structures by using inductively coupled plasma reactive ion etching (ICP-RIE) for microelectronic applications. Applying different gas mixtures, a maximum bevel angle of 87° (almost vertical), large-angle bevels ranging from 40° to 80°, and small-angel bevels ranging from 7° to 17° were achieved separately using distinct gas mixtures at different ratios...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28632751/owl2-benchmarking-for-the-evaluation-of-knowledge-based-systems
#18
Sher Afgun Khan, Muhammad Abdul Qadir, Muhammad Azeem Abbas, Muhammad Tanvir Afzal
OWL2 semantics are becoming increasingly popular for the real domain applications like Gene engineering and health MIS. The present work identifies the research gap that negligible attention has been paid to the performance evaluation of Knowledge Base Systems (KBS) using OWL2 semantics. To fulfil this identified research gap, an OWL2 benchmark for the evaluation of KBS is proposed. The proposed benchmark addresses the foundational blocks of an ontology benchmark i.e. data schema, workload and performance metrics...
2017: PloS One
https://www.readbyqxmd.com/read/28632645/management-of-symptomatic-lumbar-disk-herniation-an-international-perspective
#19
Pravesh S Gadjradj, Mark P Arts, Maurits W van Tulder, Wim J R Rietdijk, Wilco C Peul, Biswadjiet S Harhangi
STUDY DESIGN: A questionnaire survey. OBJECTIVE: To evaluate the current practice patterns of surgeons regarding both the surgical and nonsurgical management of lumbar disk herniation (LDH) worldwide and to compare this with the current literature. SUMMARY OF BACKGROUND DATA: Sciatica is a common diagnosis in the general population. Sciatica is most frequently caused by LDH. Multiple surgical techniques and treatment modalities are available to treat LDH, albeit some with small effect sizes or without compelling evidence...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#20
Ana Póvoa, Alexandra Matias, Pedro Xavier, Isaac Blickstein
OBJECTIVE: To compare first trimester 2D conventional and 3D power Doppler angiography measures in twins and singletons following assisted reproduction. METHODS: We prospectively evaluated 50 singleton and 47 twin pregnancies that eventually ended in live births. Patients were recruited from a single assisted reproductive technology (ART) center with standard treatment protocols. Obstetric ultrasound was performed at 8-9 weeks +6 days. Intervillous flow, uteroplacental circulation and uterine artery pulsatility (PI) and resistance index (RI) using two-dimensional (2D) ultrasound examination were evaluated...
June 20, 2017: Journal of Perinatal Medicine
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