| 基于软件中央控制器的多媒体教学系统实施方案 |
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| 引用本文： | 程峰,尤利华.基于软件中央控制器的多媒体教学系统实施方案[J].华南师范大学学报(自然科学版),2012,44(4):0-0. |
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| 作者姓名： | 程峰 尤利华 |
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| 作者单位： | 华南师范大学数学科学学院,广东广州,510631 |
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| 基金项目： | 国家自然科学基金项目，广州市珠江科技新星项目 |
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| 摘 要： | 本研究以《多媒体教学环境的工程建设规范2]》为标准，提出了纯软件的中央控制器的设计的思想，并设计了由纯软件中央控制器组成的多媒体教学系统的解决方案。
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| 关 键 词： | 认知诊断 AHM模型 判别方法 |
| 收稿时间： | 2011-09-05 |
The Base Set of Primitive Anti-Symmetric Signed Digraph with No Loops |
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| CHENG Feng
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YOU Lihua.The Base Set of Primitive Anti-Symmetric Signed Digraph with No Loops[J].Journal of South China Normal University(Natural Science Edition),2012,44(4):0-0. |
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| Authors: | CHENG Feng YOU Lihua |
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| Institution: | (School of Mathematics,South China Normal University,Guangzhou 510631,China) |
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| Abstract: | The basis of primitive anti-symmetric signed digraphs with no loops on $n$ vertices is studied, the maximum base is obtained and the extreme signed digraphs with the maximum base is characterized.Let S be a signed digraph， and C be a cycle of $S$ with length l, notation $d_l$ is defined, and an upper bound for the base of S is obtained by two parameters $d_l$ and l. According to the value of $d_l$, the base set of primitive anti-symmetric signed digraphs with no loops on n vertices is completely determined by the method of graph theory and known upper bound. |
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| Keywords: | primitive anti-symmetric signed digraph non-powerful base |
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