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QUADRATIC: 作品数：643被引量：699H指数：11; 导出分析报告; 相关领域：理学更多>>; 相关作者：叶惟寅王哲陈雷邢作霞孙宏利更多>>; 相关机构：南京航空航天大学西北工业大学南京农业大学武汉大学更多>>; 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国家教育部博士点基金国家高技术研究发展计划更多>>

Multi-rater Prism:Learning self-calibrated medical image segmentation from multiple raters: 《Science Bulletin》2024年第18期2906-2919,共14页Junde Wu Huihui Fang Jiayuan Zhu Yu Zhang Xiang Li Yuanpei Liu Huiying Liu Yueming Jin Weimin Huang Qi Liu Cen Chen Yanfei Liu Lixin Duan Yanwu Xu Li Xiao Weihua Yang Yue Liu; supported by the Excellent Young Science and Technology Talent Cultivation Special Project of China Academy of Chinese Medical Sciences(CI2023D006);the National Natural Science Foundation of China(82121003 and 82022076);Beijing Natural Science Foundation(2190023);Shenzhen Fundamental Research Program(JCYJ20220818103207015);Guangdong Provincial Key Laboratory of Human Digital Twin(2022B1212010004)。; In medical image segmentation,it is often necessary to collect opinions from multiple experts to make the final decision.This clinical routine helps to mitigate individual bias.However,when data is annotated by multip...; 关键词：Medical image segmentation Multiple raters SELF-CALIBRATION Half-quadratic algorithm

Quadratic Yukawa coupling and matrix Yukawa coupling in the large N expansion: 《Chinese Science Bulletin》2014年第5期484-491,共8页Song Shi Wei-Min Sun Hong-Shi Zong; supported in part by the National Natural Science Foundation of China(10935001,11275097 and11075075);the Research Fund for the Doctoral Program of Higher Education(2012009111002); In this article,we study three types of new Yukawa couplings(the boson field is coupled to the fermion field).Two of them are quadratic Yukawa couplings(the boson field is in the form of a vector),and the other one is...; 关键词：场耦合矩阵希格斯机制玻色子场费米子场动力学行为联轴器规范场

One-step quadratic convergence of noninterior continuation method for NCP被引量：2: 《Chinese Science Bulletin》1999年第20期1858-1862,共5页XIU NaihuaDepartment of Mathematics , Northern Jiaotong University , Beijing 100044, China; A noninterior continuation method is presented, with only the certering step used at each iteration, for nonlinear complementarity problem. It is shown that the algorithm is globally linearly and locally quadratically...; 关键词：nonlinear complementarity PROBLEM noninterior CONTINUATION method ONE-STEP QUADRATIC convergence.

On imaginary quadratic function fields with the ideal class group to be exponent ≤2被引量：1: 《Chinese Science Bulletin》1998年第24期2055-2059,共0页HU Weiqun Department of Fundamental Science, Nanjing Agriculture College, Nanjing 210038, China; A necessary condition is presented for the ideal class group of an imaginary quadratic function field K=k(D) (k=F-q(x), 2q) to be of exponent ≤2. The condition is proved to be sufficient in some cases. An analogue of...; 关键词：imaginary QUADRATIC function field IDEAL CLASS GROUP IDEAL CLASS number.

Association schemes of quadratic forms over a finite field of characteristic two被引量：1: 《Chinese Science Bulletin》1998年第23期1965-1968,共4页Yangxian Wang Chunsen Wang Changli Ma; ThisworkwassupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .195 710 2 4 ); For the association schemes of quadratic forms over a finite field of characteristic two, the parameters of this association scheme are discussed by using matrix skill. For n=2, 3 , all the parameters are computed. Fo...; 关键词：FINITE field QUADRATIC FORM ASSOCIATION scheme.

Modification of Cohen-Lenstra heuristics for ideal class groups and numbers of certain real quadratic fields被引量：1: 《Chinese Science Bulletin》1997年第23期1959-1962,共4页L.C.Washington; THE famous Cohen-Lenstra heuristics aroused wide insterest and research. Here for a certaintype of real quadratic fields with elements P of potential order p in their ideal classes, modifi-cations of the Cohen-Lenstra...; 关键词：real QUADRATIC field CLASS group CLASS number heuristics.

Calculation of correlation function of binary periodic sequences: 《Chinese Science Bulletin》1997年第13期1065-1068,共4页LI ChaoDepartment of System Engineering and Mathematics, National University of Defense Technology, Changsha 410073, China State Key Laboratory of Mobile Communication, Southeast University, Nanjing 210018, China; SINCE Olsen and Lempel constructed a family of optimal key sequences (called Bent se-quences) by using the trace function over finite field in 1982, the theory of trace functionhas been widely used in spread-spectrum ...; 关键词：EXPONENTIAL SUMS QUADRATIC FORMS periodic SEQUENCES correlation functions.

Uniqueness of limit cycles of quadratic system (Ⅲ) _(m=0): 《Chinese Science Bulletin》1997年第8期628-631,共4页ZHANG Xiang and YE Qin1.Department of Mathematics, Nanjing University, Nanjing 210093, China 2. Department of Applied Mathematics, Tongji University, Shanghai 200092, China; IN ref.[1]of § 20,Ye Yanqian has investigated the impossibility of（2,2）distribution of lim-it cycles of quadratic systems,where the footnote 1)on p.553 gives the following conjecture:The quadratic system（Ⅲ）_...; 关键词：QUADRATIC SYSTEM LIMIT CYCLE uniqueness.

Real stability radii and quadratic matrix inequality: 《Chinese Science Bulletin》1996年第24期2043-2046,共4页胡庭姝黄琳; Project supported by the National Natural Science Foundation of China.; In the sequel,we suppose system （2） to be C_g-stable,i.e.C_g is a given open set in thecomplex plane and all the eigenvalues of A are in C_g.Both B∈R^n×m and C∈R^p×n; 关键词：parameter PERTURBATIONS REAL STABILITY RADII QUADRATIC matrix inequality.

Equations of real quadratic fields and semi-simple and minimal continued fractions被引量：2: 《Chinese Science Bulletin》1995年第21期1761-1765,共5页张贤科; the National Natural Science Foundation of China.; By the theory of semi-simple (generalized) continued fractions, the Diophantine equation x^2-dy^2=c (1) will be studied, and simple criteria for solvability and explicit sets of solutions will be given.These could be ...; 关键词：QUADRATIC field DIOPHANTINE equation continued fraction.

QUADRATIC