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Now showing items 1 - 16 of 382

  • METHOD, DEVICE AND SYSTEM FOR PLAYING MULTIPLE PATHS OF VIDEO DATA

    The present invention relates to the technical field of information. Provided are a method, device and system for playing multiple paths of video data, which can improve the video playing precision. The method comprises: acquiring a request for playing multiple paths of video data, sent by a client, the request for playing multiple paths of video data carrying identification information of a terminal device and identification information respectively corresponding to the multiple paths of video data; determining the number of video layers that is corresponding to the terminal device according to the identification information of the terminal device; and if it is detected that the number of paths of the multiple paths of video data is greater than the number of video layers, acquiring, according to the identification information corresponding to the multiple paths of video data, video data the number of paths of which is the same as the number of video layers, acquiring picture data the number of paths of which is corresponding to the number of paths of the remaining vide data, and sending the acquired video data and the acquired picture data to the client, the picture data being represented by pictures corresponding to the video data, so that the client simultaneously plays paths of video data and paths of picture data by means of paths of players. The present invention is applicable to playing of multiple paths of video data.
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  • METHOD AND SYSTEM FOR LOCATING GROUND FAULTS IN A NETWORK OF DRIVES

    A drive system includes a current sensor configured to generate a first current signal representative of a current flowing in one or more electrical devices electrically coupled together through a power supply bus, a power output bus, and a common ground. The drive system also includes a voltage sensor configured to generate a first voltage signal representative of a voltage with respect to the common ground in the one or more electrical devices. The drive system further includes a ground fault detection controller configured to determine a ground fault in the one or more electrical devices based on a change in at least one of the first current signal and the first voltage signal.
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  • Global methylation of blood leukocyte DNA and risk of melanoma

    Shen, Jie   Song, Renduo   Wan, Jie   Huff, Chad   Fang, Shenying   Lee, Jeffrey E.   Zhao, Hua  

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  • A Novel Energy-Efficient Contention-Based MAC Protocol Used for OA-UWSN

    Wang, Jingjing   Shen, Jie   Shi, Wei   Qiao, Gang   Wu, Shaoen   Wang, Xinjie  

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  • Modulation Schemes for a 30 MVA IGCT Converter using NPC H-Bridges

    Shen, Jie   Schroder, Stefan   Qu, Bo   Zhang, Yingqi   Chen, Kunlun   Zhang, Fan   Zhang, Richard  

    This paper demonstrates the impact of modulation schemes on the power capability of a high-power converter with low pulse ratios. This integrated gate-commutated thyristor (IGCT) converter uses a five-level neutral-point-clamped H-bridge topology. It is concluded that phase-shifted carrier modulators are not attractive for such converters at low pulse ratios due to the poor total harmonic distortion (THD) performance and poor power capability. The THD performance is a key indicator for optimizing the performance of IGCT converters. Therefore, low-THD patterns such as the level-shifted carrier and optimized pulse patterns are proposed. It is explored that a smart and instantaneous pattern distribution is a key factor to ensure a robust modulator design. Compared with the standard interleaving concept, the proposed modulation schemes allow a power capability increase up to 40%. Meanwhile, the current THD is reduced from 11% to 4%-7%. The concept is implemented and experimentally validated up to 30 MVA on an industrial IGCT converter.
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  • Blind Audio-Visual Localization and Separation via Low-Rank and Sparsity

    Pu, Jie   Panagakis, Yannis   Petridis, Stavros   Shen, Jie   Pantic, Maja  

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  • CYLINDER JACKET SUPPORTING STRUCTURE FOR HIGH-SPEED MARINE DIESEL ENGINE

    A cylinder jacket supporting structure for a high-speed marine diesel engine. The cylinder jacket supporting structure comprises: a cylinder jacket mounting hole (2); a water jacket cavity (3), arranged in the top of the cylinder jacket mounting hole (2); and a rectangular wave cylinder jacket supporting structure (4) and a cylinder jacket through hole. The cylinder jacket through hole is divided into three layers, i.e., a first cylinder jacket through hole (51), a second cylinder jacket through hole (52) and a third cylinder jacket through hole (53) from top to bottom respectively. The rectangular wave cylinder jacket supporting structure (4) is divided into two layers. The first cylinder jacket through hole (51) is positioned in the lower part of the water jacket cavity (3), the first layer of the rectangular wave cylinder jacket supporting structure (4) is arranged between the first cylinder jacket through hole (51) and the second cylinder jacket through hole (52), and the second layer of the rectangular wave cylinder jacket supporting structure (4) is arranged between the second cylinder jacket through hole (52) and the third cylinder jacket through hole (53). The cylinder jacket supporting structure has high rigidity, light weight, small size, small overall vibration and low noise. A cylinder jacket is difficult to deform in the working process, and can be conveniently positioned, sealed and maintained.
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  • An AUV Integrated Navigation Method Based on Multi-sensor Data Fusion

    Shen, Jie   Zhang, Zhen   Bai, Hongyang   Liu, Shengchun   Gu, Hui   Wang, Huibin  

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  • Development of a Parents’ Short Form Survey of Their Children's Oral Health

    Wang, Yan   Hays, Ron   Marcus, Marvin   Maida, Carl   Shen, Jie   Xiong, Di   Lee, Steve   Vladimir, Spolsky   Coulter, Ian   Crall, James   Liu, Honghu  

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  • An application-centric evaluation of OpenCL on multi-core CPUs

    Shen, Jie   Fang, Jianbin   Sips, Henk   Varbanescu, Ana Lucia  

    Although designed as a cross-platform parallel programming model, OpenCL remains mainly used for GPU programming. Nevertheless, a large amount of applications are parallelized, implemented, and eventually optimized in OpenCL. Thus, in this paper, we focus on the potential that these parallel applications have to exploit the performance of multi-core CPUs. Specifically, we analyze the method to systematically reuse and adapt the OpenCL code from CPUs to CPUs. We claim that this work is a necessary step for enabling interplatform performance portability in OpenCL. Our method is based on iterative tuning: given an application, we choose a reasonable OpenMP implementation as a performance reference and we systematically tune the OpenCL code to reach or exceed this threshold. In the process, we identify the factors that significantly impact the performance of the OpenCL code. We apply this method for five different applications, selected from the Rodinia benchmark suite (which provides equivalent OpenMP and OpenCL implementations), and make a series of thorough evaluations with different datasets on three different multi-core platforms. We find that the OpenCL performance on CPUs is affected by typical, hard-coded GPU optimizations (unsuitable for multi-core CPUs), by the fine-grained parallelism of the model, and by the immature OpenCL compilers. Systematically fixing these issues allowed OpenCL to achieve OpenMP's or better performance, proving it can be a good option for programming multi-core CPUs. (C) 2013 Elsevier B.V. All rights reserved.
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  • Improved density measurement by FIR laser interferometer on EAST tokamak

    Shen, Jie   Jie, Yinxian   Liu, Haiqing   Wei, Xuechao   Wang, Zhengxing   Gao, Xiang  

    A three-channel far-infrared (FIR) hydrogen cyanide (HCN) laser interferometer is in operation since 2010 to measure the line averaged electron density on experimental advanced superconducting tokamak (EAST). The HCN laser signal is improved by means of a new schottky barrier diode (SBD) detector. The improved measurement and latest experiment results of the three-channel FIR laser interferometer on EAST tokamak are reported.
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  • Revealing Surface States in In-Doped SnTe Nanoplates with Low Bulk Mobility

    Shen, Jie   Xie, Yujun   Cha, Judy J.  

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  • Sleep duration and risk of cancer in the Mexican American Mano-a-Mano Cohort

    Shen, Jie   Chrisman, Matthew   Wu, Xifeng   Chow, Wong-Ho   Zhao, Hua  

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  • In vitro-in vivo correlation of parenteral risperidone polymeric microspheres

    Shen, Jie   Choi, Stephanie   Qu, Wen   Wang, Yan   Burgess, Diane J.  

    Abstract The objective of the present study was to determine whether an in vitro-in vivo correlation (IVIVC) can be established for polymeric microspheres that are equivalent in formulation composition but prepared with different manufacturing processes. Risperidone was chosen as a model therapeutic and poly(lactic-co-glycolic acid) (PLGA) with similar molecular weight as that used in the commercial product Risperdal® Consta® was used to prepare risperidone microspheres. Various manufacturing processes were investigated to produce the risperidone microspheres with similar drug loading (approx. 37%) but distinctly different physicochemical properties (e.g. porosity, particle size and particle size distribution). In vitro release of the risperidone microspheres was investigated using different release testing methods (such as sample-and-separate and USP apparatus 4). In vivo pharmacokinetic profiles of the risperidone microsphere formulations following intramuscular administration were determined using a rabbit model. Furthermore, the obtained pharmacokinetic profiles were deconvoluted using the Loo–Riegelman method and the calculated in vivo release was compared with the in vitro release of these microspheres. Level A IVIVCs were established and validated for the compositionally equivalent risperidone microspheres based on the in vitro release data obtained using USP apparatus 4. The developed IVIVCs demonstrated good predictability and were robust. These results showed that the developed USP apparatus 4 method was capable of discriminating PLGA microspheres that are equivalent in formulation composition but with manufacturing differences and predicting their in vivo performance in the investigated animal model. Graphical abstract Predicted in vivo release profiles of different compositionally equivalent risperidone microspheres based on Level A IVIVCs established.
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  • METHOD AND DEVICE FOR AUTOMATICALLY TESTING CODE STREAM SUBTITLE

    Disclosed in the present invention is a method for automatically testing a code stream subtitle. The method comprises: decoding a code stream of a current program to obtain subtitle information, and generating a pre-formatted program subtitle text by using the subtitle information; reading a font type of subtitles in a control subtitle text corresponding to the program subtitle text, and determining whether the font type of the subtitles in the program subtitle text is consistent with the font type of the subtitles in the control subtitle text; and if yes, conducting a subtitle content comparison test according to a time stamp of the program subtitle text and a time stamp of the control subtitle text, and outputting a comparison testing result. Also disclosed in the present invention is a device for automatically testing a code stream subtitle. By means of the present invention, a code stream subtitle can be tested automatically; further, the testing efficiency and the testing speed of the code stream subtitle are increased; in addition, errors caused by a human test are avoided, thereby improving the accuracy of the code stream subtitle testing.
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  • SYSTEM AND METHOD FOR CONTROLLING SERIES CONNECTED SWITCH MODULES

    A method for controlling a plurality of series connected switch modules each including at least two parallel connected electronic switches, the method includes the step of, in response to failure of any electronic switch of one or more switch modules, turning on any non-faulty electronic switch of one or more faulty switch modules when the electronic switches of other non-faulty switch modules are controlled to be turned on.
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