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检索条件"作者=3. School of Earth sciences and resources, china university of Geosciences, Beijing 100083, china"
3801 条 记 录,以下是141-150 订阅
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A quantitative program for Hadwiger's covering conjecture
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Science china Mathematics 2010年 第9期53卷 2551-2560页
作者: ZONG Chuanming school of Mathematical sciences,Peking university,{3. 100871,china school of Mathematical sciences Peking University Beijing China
In 1957,Hadwiger made a conjecture that every n-dimensional convex body can be covered by 2n translates of its *** to now,this conjecture is still open for all n *** 193.,Borsuk made a conjecture that every n-dimensio... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Development and application of ergodicity model with FRCM and FLAR for hydrological process
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Science china(Technological sciences) 2009年 第2期52卷 379-386页
作者: WANG HongRui1, FENG QiLei2, LIN Xin3.& ZENG WenYi4 1 College of Water Science, Key Laboratory for Water and Sediment sciences of the Ministry of Education, beijing Normal university, beijing 100875, china 2 school of Science, beijing Institute of Education, beijing 100011, china 3.school of Mathematical sciences, beijing Normal university, beijing 100875, china 4 College of Information Science and Technology, beijing Normal university, beijing 100875, china College of Water Science Key Laboratory for Water and Sediment Sciences of the Ministry of Education Beijing Normal University Beijing China school of Science Beijing Institute of Education Beijing China school of Mathematical sciences Beijing Normal University Beijing China College of Information Science and Technology Beijing Normal University Beijing China
In this paper, a new ergodic property analysis model of hydrological process is proposed based on fuzzy-rough c-means clustering (FRCM), autocorrelogram, and fuzzy least absolute regression (FLAR). A precipitation tim... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Nonlinear autoregressive models with heavy-tailed innovation
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Science china Mathematics 2005年 第3期48卷 333-340页
作者: JIN Yang & AN Hongzhi school of Statistics, Renmin university of china, {3. 100872, china Academy of Mathematics and Systems Science, Chinese Academy of sciences, {3. 100080, china Sch. of Statistics Renmin Univ. of China Beijing 100872 China Acad. of Mathematics and Syst. Sci. Chinese Acad. of Sci. Beijing 100080 China
In this paper, we discuss the relationship between the stationary marginal tail probability and the innovation's tail probability of nonlinear autoregressive models. We show that under certain conditions that ensure t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Threshold quantum secure direct communication without entanglement
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Science china(Physics,Mechanics & Astronomy) 2008年 第2期51卷 176-183页
作者: YANG YuGuang1,3.& WEN QiaoYan2 1 College of Computer Science and Technology, beijing university of Technology, beijing 100022,{3. 2 school of Science, beijing university of Posts and Telecommunications, beijing 100876,{3. 3.State Key Laboratory of Information Security (Graduate school of Chinese Academy of sciences), beijing 100049,{3. College of Computer Science and Technology Beijing University of Technology Beijing China State Key Laboratory of Information Security (Graduate school of Chinese Academy of sciences) Beijing China school of Science Beijing University of Posts and Telecommunications Beijing China
For the first time, a threshold quantum secure direct communication (TQSDC) scheme is presented. Similar to the classical Shamir's secret sharing scheme, the sender makes n shares, S1, …, Sn of secret key K and each ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Affinities and functional morphology of the Middle Cambrian ornamented tubules from West Hunan,china
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Progress in Natural Science:Materials International 2004年 第10期14卷 67-71页
作者: ZHU Caifa 1,2 and DONG Xiping 1 (1.school of earth and Space sciences,Peking {3.,beijing100871,china 2.{3. of Petroleum,beijing102249,china) Sch. of earth and Space Sci. Peking Univ. Beijing 100871 China Univ. of Petroleum Beijing 102249 China
Problematic phosphatic tubular microfossils with ornamented sculptures are documented to exist in limestones of the up-per Middle Cambrian Huaqiao Formation at the Paibi section and the Wangcun section in West Hunan,*... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Effective solutions to a global 3. visual system in networking environments
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Science china earth sciences 2005年 第11期48卷 2032-2039页
作者: ZHANG Liqiang1,2, ZHANG Yan3. YANG Chongjun2, LIU Suhong1, REN Yingchao2, RUI Xiaoping2 & LIU Donglin2 1. State Key Laboratory of Remote Sensing sciences, school of Geography and Remote Sensing, beijing Normal {3., beijing 100875, china 2. State Key Laboratory of Remote Sensing sciences, Institute of Remote Sensing Applications, Chinese Academy of sciences, beijing 101001, china 3. Institute of Geographical sciences and Natural resources Research, Chinese Academy of sciences, beijing 101001, china State Key Laboratory of Remote Sensing sciences School of Geography and Remote Sensing Beijing Normal University Beijing China Chinese Academy of sciences State Key Laboratory of Remote Sensing SciencesInstitute of Remote Sensing Applications China Institute of Geographical sciences and Natural resources Research Chinese Academy of Sciences China
The development of Web-based global 3. visual system has made progresses. However, there exist few mature and effective ways for managing, transmitting and visualizing massive spatial data. Based on the related work, ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
The precipitation and effect of nano nitrides in HSLC steel
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Science china(Technological sciences) 2008年 第7期51卷 989-998页
作者: FU Jie1, LIU YangChun1,2 & WU HuaJie1,3.1 school of Metallurgical and Ecological Engineering, university of Science and Technology beijing,{3., china 2 Shougang Technology Research Institute, Shougang (Group) Corporation, beijing 100041, china 3.Metallurgical Engineering Research Institute, university of Science and Technology beijing,{3., china school of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing China Shougang Technology Research Institute Shougang (Group) Corporation Beijing China Metallurgical Engineering Research Institute University of Science and Technology Beijing Beijing China
The existing forms of N and Al in HSLC (high strength low carbon) steel produced by TSCR (thin slab casting and rolling process), the precipitation thermodynamics and kinetics of AlN, and its effects on structure and ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Some Properties of The Solutions of Higher Analogue of The Painlevé Equation
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Acta Mathematicae Applicatae Sinica 2006年 第1期22卷 59-64页
作者: Ye-zhou Li school of Science,beijing university of Posts and Elecommunications,beijing 100876,china school of Aeronautical sciences and Engineering,beijing university of Aeronautics and Astronautics,beijing 100083 school of Science Beijing University of Posts and Elecommunications Beijing 100876 China school of Aeronautical sciences and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083
In this paper, we investigate the value distribution properties for the solution w(z) of higher-order Painlevé equations. We prove that the Nevanlinna's second main inequality for w(z) is reduced to an asymptoti... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
On the stability of diffusion processes with state-dependent switching
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Science china Mathematics 2006年 第9期49卷 1258-1274页
作者: XI Fubao & ZHAO Liqin Department of Mathematics, beijing Institute of Technology, beijing 100081, china {3. of Mathematical sciences, beijing Normal university, beijing 100875, china Department of Mathematics Beijing Institute of Technology Beijing China school of Mathematical sciences Beijing Normal University Beijing China
In this paper we consider the stability for diffusion processes with state-dependent switching. We first prove their Feller continuity by the coupling methods. Furthermore, we also prove their strong Feller continuity... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Bursting of Morris-Lecar neuronal model with current-feedback control
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Science china(Technological sciences) 2009年 第3期52卷 771-781页
作者: DUAN LiXia1, LU QiShao2 & CHENG DaiZhan3.1 College of Science, North china university of Technology, beijing 100144, china 2 school of Science, beijing university of Aeronautics and Astronautics, beijing 100191, china 3.Institute of Systems Science, Chinese Academy of sciences, beijing 100190, china College of Science North China University of Technology Beijing China school of Science Beijing University of Aeronautics and Astronautics Beijing China Institute of Systems Science Chinese Academy of Sciences Beijing China
The Morris-Lecar (ML) neuronal model with current-feedback control is considered as a typical fast-slow dynamical system to study the combined influences of the reversal potential VCa of Ca2+ and the feedback current ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论