云南高校图书馆联盟文献共享服务平台- APPROXIMATE

APPROXIMATE: 作品数：556被引量：745H指数：10; 导出分析报告; 相关领域：理学更多>>; 相关作者：阮宇肖国生李俊清吕佳杨维更多>>; 相关机构：吉林大学南京航空航天大学浙江大学合肥工业大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

An alarming scenario in developing world:A looming of viral outbreaks: 《Asian Pacific Journal of Tropical Medicine》2022年第9期427-428,共2页Faheem Anwar Abdullah Shazma Wahab Komal Aman Ihteshamul Haq; Pakistan has suffered from various infectious diseases including dengue,Crimean-Congo hemorrhagic fever(CCHF),polio and COVID-19 in the recent past[1,2].As per the World Health Organization reports(September 2022),609...; 关键词：DISEASES globally APPROXIMATE

An Analytic Approximate Solution of the SIR Model: 《Applied Mathematics》2021年第1期58-73,共16页I. Lazzizzera; The SIR(D) epidemiological model is defined through a system of transcendental equations, not solvable by elementary functions. In the present paper those equations are successfully replaced by approximate ones, whose...; 关键词：SIR Epidemic Model Kermack-McKendrick Model Epidemic Dynamics Approximate Analytic Solution

An Approximate High Gain Observer for Speed-sensorless Estimation of Induction Motors: 《IEEE/CAA Journal of Automatica Sinica》2019年第1期53-63,共11页Yebin Wang Lei Zhou Scott A.Bortoff Akira Satake Shinichi Furutani; Rotor speed estimation for induction motors is a key problem in speed-sensorless motor drives. This paper performs nonlinear high gain observer design based on the full-order model of the induction motor. Such an effo...; 关键词：Induction motor industrial applications nonlinear state estimation speed-sensorless motor drive

An Alternating Direction Nonmonotone Approximate Newton Algorithm for Inverse Problems: 《Journal of Applied Mathematics and Physics》2016年第11期2069-2078,共11页Zhuhan Zhang Zhensheng Yu Xinyue Gan; In this paper, an alternating direction nonmonotone approximate Newton algorithm (ADNAN) based on nonmonotone line search is developed for solving inverse problems. It is shown that ADNAN converges to a solution of th...; 关键词：Nonmonotone Line Search Alternating Direction Method Bound-Constraints Newton Method

An Approximate Linear Solver in Least Square Support Vector Machine Using Randomized Singular Value Decomposition: 《Wuhan University Journal of Natural Sciences》2015年第4期283-290,共8页LIU Bing XIANG Hua; Supported by the National Natural Science Foundation of China(10901125,11471253); In this paper, we investigate the linear solver in least square support vector machine（LSSVM） for large-scale data regression. The traditional methods using the direct solvers are costly. We know that the linear equ...; 关键词：least square support vector machine Nystr?m method Lanczos process randomized singular value decomposition

An Alternating Direction Approximate Newton Algorithm for Ill-Conditioned Inverse Problems with Application to Parallel MRI: 《Journal of the Operations Research Society of China》2015年第2期139-162,共24页William Hager Cuong Ngo Maryam Yashtini Hong-Chao Zhang; This research was partly supported by National Science Foundation(Nos.1115568 and 1016204);by Office of Naval Research Grants(Nos.N00014-11-1-0068 and N00014-15-1-2048).; Analternating direction approximateNewton(ADAN)method is developed for solving inverse problems of the form min{φ(Bu)+(1/2)||Au−f||^(2)_(2)},whereφis convex and possibly nonsmooth,and A and B arematrices.Problems of...; 关键词：Convex optimization Total variation regularization Nonsmooth optimization Global convergence Parallel MRI

Asymptotically Optimal Detection of DCT-Domain Watermarks Using an Approximate Alpha-Stable Prior: 《Chinese Journal of Electronics》2009年第2期335-337,共3页SUN Zhongwei WU Juying GUO Qingrui; This paper proposes an asymptotically optimal watermark detector in Discrete cosine transform （DCT） domain images. The Gaussian mixture model as an analytical approximation of alpha-stable distribution is chosen to ...; 关键词：Alpha-stable distribution Gaussian mixture model Digital watermarking Weak signal detection.

An Efficient Method for Calculating Qualitative Spatial Relations被引量：7: 《Chinese Journal of Electronics》2009年第1期42-46,共5页WANG Shengsheng LIU Dayou; The work is supported by the NSFC Major Research Program （No,60496321）, National Natural Science Foundation of China （No.60603030, No.60773099）, the National High-Tech Research and Development Plan of China （No.20060110Z2037）, the Major Program of Science and Technology Development Plan of Jilin Province （No.20060213）, European Commission （No.TH/Asia Link/010 （111084））.; Qualitative spatial relations are widely used in geospatial ontologies, geospatial （semantic） web services, spatial description logics etc. Methodology to obtain qualitative spatial relations （especially complex sp...; 关键词：Qualitative spatial reasoning Multigranularities approximate representation Region connection calculus Geographical information system

An Optimized Approach for Extracting Approximate Functional Dependencies in XML Documents: 《Wuhan University Journal of Natural Sciences》2006年第1期127-132,共6页SHI Lei YANG Xiao-chun YU Ge WANG Bin ZHOU Hua-hui; Supported by the National Natural Science Foun-dation of China (60173051) , Teaching and Research Award Programfor Outstanding Young Teachers in Higher Education Institution ofthe Ministry of Education,the National Research Foundation for theDoctoral Programof Higher Education of China(20030145029) ,andthe Natural Science Foundationfor Doctoral Career Award of LiaoningProvince(20041016); In this paper, the definition of approximate XFDs based on value equality is proposed. Two metrics, sup port and strength, are presented for measuring the degree of approximate XFD. A basic algorithm is designed for e...; 关键词：XML functional dependencies strength of functional dependencies

Application of an approximate vectorial diffraction model to analysing diffractive micro-optical elements被引量：1: 《Chinese Physics B》2005年第6期1136-1141,共6页牛春晖李志远叶佳声顾本源

APPROXIMATE