咨询与建议

限定检索结果

文献类型

  • 2,392 篇 期刊文献
  • 384 篇 会议

馆藏范围

  • 2,776 篇 电子文献
  • 0 种 纸本馆藏

日期分布

学科分类号

  • 1,697 篇 工学
    • 933 篇 材料科学与工程(可...
    • 381 篇 化学工程与技术
    • 169 篇 计算机科学与技术...
    • 165 篇 机械工程
    • 153 篇 冶金工程
    • 118 篇 力学(可授工学、理...
    • 107 篇 电子科学与技术(可...
    • 94 篇 信息与通信工程
    • 87 篇 动力工程及工程热...
    • 85 篇 地质资源与地质工...
    • 80 篇 控制科学与工程
    • 80 篇 水利工程
    • 77 篇 电气工程
    • 71 篇 建筑学
    • 69 篇 环境科学与工程(可...
    • 55 篇 土木工程
    • 55 篇 软件工程
  • 1,619 篇 理学
    • 630 篇 物理学
    • 479 篇 化学
    • 329 篇 数学
    • 181 篇 生物学
    • 126 篇 天文学
    • 75 篇 地质学
  • 279 篇 教育学
    • 149 篇 心理学(可授教育学...
    • 104 篇 教育学
  • 208 篇 医学
    • 125 篇 临床医学
  • 194 篇 农学
    • 92 篇 作物学
    • 65 篇 农业资源与环境
  • 109 篇 管理学
    • 69 篇 管理科学与工程(可...
  • 64 篇 经济学
    • 59 篇 应用经济学
  • 36 篇 历史学
  • 30 篇 哲学
  • 26 篇 文学
  • 25 篇 法学
  • 10 篇 军事学
  • 8 篇 艺术学

主题

  • 24 篇 稀土
  • 24 篇 microstructure
  • 21 篇 of
  • 16 篇 model
  • 15 篇 carbon
  • 14 篇 中国
  • 14 篇 北京
  • 13 篇 function
  • 13 篇 and
  • 13 篇 structure
  • 12 篇 properties
  • 11 篇 合成
  • 11 篇 儿童
  • 10 篇 analysis
  • 10 篇 surface
  • 9 篇 thermodynamics
  • 9 篇 simulation
  • 9 篇 magnetic
  • 9 篇 mechanical prope...
  • 9 篇 cell

机构

  • 324 篇 首都师范大学
  • 204 篇 北京师范大学
  • 101 篇 清华大学
  • 63 篇 北京大学
  • 45 篇 北京科技大学
  • 34 篇 华东师范大学
  • 23 篇 陕西师范大学
  • 23 篇 department of ma...
  • 17 篇 北京理工大学
  • 17 篇 山东师范大学
  • 16 篇 中国人民大学
  • 14 篇 东北师范大学
  • 13 篇 department of ma...
  • 13 篇 中国农业大学
  • 12 篇 北京航空航天大学
  • 12 篇 中国科学技术大学
  • 11 篇 department of bi...
  • 11 篇 四川师范大学
  • 11 篇 天津师范大学
  • 11 篇 河南师范大学

作者

  • 79 篇 china
  • 22 篇 tsinghua univers...
  • 17 篇 beijing
  • 15 篇 beijing 100084
  • 10 篇 郭德俊
  • 10 篇 张钟宪
  • 10 篇 department of ma...
  • 10 篇 林崇德
  • 10 篇 邹洪
  • 10 篇 梁开明
  • 10 篇 印莉萍
  • 9 篇 傅桦
  • 9 篇 p. r. china
  • 9 篇 张厚粲
  • 9 篇 谷学新
  • 9 篇 周晓林
  • 8 篇 杜桂森
  • 8 篇 southwest univer...
  • 8 篇 刘若庄
  • 7 篇 杨秀山

语言

  • 1,682 篇 英文
  • 1,094 篇 中文
检索条件"作者=2. Department of Materials Science and Engineering, beijing Normal University, beijing 100875, china"
2776 条 记 录,以下是1-10 订阅
排序:
Implementation of a multiple round quantum dense coding using nuclear magnetic resonance
收藏 引用
science china(Physics,Mechanics & Astronomy) 2005年 第6期48卷 706-715页
作者: ZHANG Jingfu1, XIE Jingyi2. WANG Chuan1, DENG Zhiwei3, LU Zhiheng4, & LONG Guilu1,5 1. Key Laboratory For Quantum Information and Measurements of MOE, department of Physics, Tsinghua university, {2. 100084,china 2. department of materials science and engineering, beijing normal university, beijing 100875, china 3. Testing and Analytical Center, beijing normal university, beijing 100875,china 4. department of Physics, beijing normal university, beijing 100875, china 5. Key Laboratory For atomic and Molecular Nanosciences, Tsinghua university, {2. 100084,china Key Laboratory For Quantum Information and Measurements Department of Physics Tsinghua University Beijing 100084 China department of materials {2. and engineering Beijing Normal University Beijing 100875 China Testing and Analytical Center Beijing Normal University Beijing 100875 China department of Physics Beijing Normal University Beijing 100875 China Key Laboratory for Atomic and Molecular Nanosciences Tsinghua University Beijing 100084 China
A multiple round quantum dense coding scheme based on the quantum phase estimation algorithm is proposed and implemented in a three qubit nuclear magnetic resonance (NMR) quantum computer. Using an m + 1 qubit system,... 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
Recommendation Method for Contrastive Enhancement of Neighborhood Information
收藏 引用
Computers, materials & Continua 2024年 第1期78卷 453-472页
作者: Hairong Wang beijing Zhou Lisi Zhang He Ma School of Computer science and engineering North Minzu UniversityNingxia750021China
Knowledge graph can assist in improving recommendation performance and is widely applied in various person-alized recommendation ***,existing knowledge-aware recommendation methods face challenges such as weak user-it... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Dense coding scheme using superpositions of Bell-states and its NMR implementation
收藏 引用
science china(Physics,Mechanics & Astronomy) 2005年 第1期48卷 57-67页
作者: ZHANG Jingfu, XIE Jingyi, DENG Zhiwei & LU Zhiheng Key Laboratory for Quantum Information and Measurements, department of Physics, Tsinghua university, {2. 100084, china Center for Quantum Information, Tsinghua university, {2. 100084, china department of materials science and engineering, beijing normal university,{12., china Testing and Analytical Center, beijing normal university,{12., china department of Physics, beijing normal university,{12., china Key Laboratory for Quantum Information and Measurements Department of Physics Tsinghua University Beijing 100084 China Center for Quantum Information Tsinghua University Beijing 100084 China department of materials {2. and engineering Beijing 100875 China Testing and Analytical Center Beijing Normal University Beijing 100875 China department of Physics Beijing Normal University Beijing 100875 China
Dense coding using superpositions of Bell-states is proposed. The generalized Grover's algorithm is used to prepare the initial entangled states, and the reverse process of the quantum algorithm is used to determine 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
ENERGY FLOWS IN COMPLEX ECOLOGICAL SYSTEMS:A REVIEW
收藏 引用
Journal of Systems science & Complexity 2009年 第3期22卷 345-359页
作者: Jiang ZHANG department of Systems science,School of Management,{2. normal university,{2. 100875,china. department of Systems science School of Management Beijing Normal University
Energy flow drives the complex systems to *** allometric scaling as the universalenergy flow pattern has been found in different scales of ecological *** reflects the generalpower law relationship between flow 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
Saturated models
收藏 引用
Chinese science Bulletin 1998年 第7期43卷 562-564页
作者: CHEN Guolong department of Mathematics, beijing normal university,{2., china department of Mathematics Beijing Normal University Beijing China
An equivalent description of saturated models is given, and some properties of countable saturated models, almost saturated models and full models are discussed. New proofs of two important theorems of the related doc... 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
Recovery of functions via their irregular sampling values
收藏 引用
Chinese science Bulletin 1998年 第4期43卷 268-271页
作者: FANG Gensun department of Mathematics, beijing normal university,{2., china department of Mathematics Lkijing Normal University Beijing China
It is proved that if a function can be completely reconstructed by tempered splines which satisfy the real Kiesz basis condition as the degree of spline goes to infinity, then the function is band limited.
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
Solvation effects on brain uptakes of isomers of ^(99m)Tc brain imaging agents
收藏 引用
Chinese science Bulletin 2002年 第21期47卷 1786-1791页
作者: JIA Hongmei, MA Xiaohui, WANG Cunxin & LIU Boli1. department of Chemistry, beijing normal university,{2., china 2. Center for Biomedical engineering, beijing Polytechnic university, beijing 10002., china department of Chemistry Beijing Normal University Beijing 100875 China Center for Biomedical engineering Beijing Polytechnic University Beijing 100022 China
Analysis of electrostatic hydration free energies of the isomers of the 99mTc-BAT and 99mTc-DADT complexes is carried out using the computer simulation technique. The results show that not only a correlation exists be... 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
An equality on Hochschild homology groups
收藏 引用
Chinese science Bulletin 1997年 第8期42卷 624-627页
作者: ZHANG Pu and LIU Shaoxue1. department of Mathematics, university of {2. and Technology of china, Hefei 2.002., china 2. department of Mathematics, beijing normal university, beijing 100875, china department of Mathematics University of Science and Technology of China Hefei China department of Mathematics Beijing Normal University Beijing China
LET A be finite-dimensional algebra over field k,and Ae the enveloping algebra of A,i.e.Ae=A kAop,where Aop is the opposite algebra of *** A-bimodule has a natural left Ae-module structure as follows:
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
TEXTURE DETERMINATION OF THIN FILM ZrO_2.BY ELECTRON DIFFRACTION
收藏 引用
Acta Metallurgica Sinica(English Letters) 1993年 第12期6卷 472-473页
作者: WANG Yinghua Tsinghua university,beijing,{2. department of materials science and engineering,Tsinghua university,beijing 100084,{2. Tsinghua Univ Beijing China
A method for semi-quantitative determination of thin film texture using electron diffrac- tion is *** texture state of a zirconia thin film with a cubic structure has been determined in this way and is presented as an... 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
Functional central limit theorem for super α-stable processes
收藏 引用
science china Mathematics 2004年 第6期47卷 874-881页
作者: HONG Wenmingdepartment of Mathematics, beijing normal university,{2., china department of Mathematics Beijing Normal University Beijing China
A functional central limit theorem is proved for the centered occupation time process of the super α-stable processes in the finite dimensional distribution sense. For the intermediate dimensions α < d < 2. (0 < α... 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