排序方式： 共有23条查询结果，搜索用时 15 毫秒
1.
胡茂林 《宁夏师范学院学报》2001,22(6):1-2
在文[1]的基础上以积和式的laplace展开定理为依据，对p阶连通图的关联矩阵B的大子阵进行分类讨论，给出了perB的计值方法。 相似文献
2.
赵彦利 《河北职业技术学院学报》2004,4(3):21-22,25
本文对平面动力系统的ω(α)极限集在轨道有界时的一些性质进行了论述，并对轨道无界情形下其极限集的结构做了初步研究。 相似文献
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在《数据结构》有关图的章节中,对最小生成树两大算法的解释都是基于MST性质来说明的。由于MST性质每次是选取原图集中值最小两栖边来构造最小生成树,这个过程较为复杂,现可以反其道而行之,采用“破圈法”——每次删除权值最大的边,来产生最小生成树,过程简洁、结果相同,同时可以证明其正确性,不失为一好算法。 相似文献
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By now, there have been many standards battles fought within the same industry or by multiple industries in the market-based standardization. In these battles, incompatible standards compete to win market dominance. While there is some research on standards battles found within a single committee, competitions in the committee-based standardization between standards from different committees or SDOs are underexplored. This paper categorizes the types of standards battles by the mode of standardization and the heterogeneity of actors. A new type referred to as ‘committee standards battles for converging systems’ is introduced and the dynamics of such battles is explored with two cases. The battle between the electric vehicle charging and the smart meter communication standard and the battle between two different vehicle-to-everything (V2X) communication standards are analyzed. The failure in achieving compatibility between different committee standards on the same frequency bands results in communication interference that adversely affects the operation of smart systems. Social incompatibilities between actors and alliances from a mix of industries with vested interests towards a particular standard complicate the battling scene. The findings provide implications in terms of heterogeneity, actors, and government role in standards battles. 相似文献
5.
Xin-yu Wang Xiao-hu Yang Jian-ling Sun Wei Li Wei Shi Shan-ping Li 《浙江大学学报(A卷英文版)》2008,9(10):1318-1325
This paper proposes a connected dominating set （CDS） based mobility management algorithm, CMMA, to solve the problems of node entering, exiting and movement in mobile ad hoc networks （MANETs）, which ensures the connectivity and efficiency of the CDS. Compared with Wu＇s algorithm, the proposed algorithm can make full use of present network conditions and involves fewer nodes. Also it has better performance with regard to the approximation factor, message complexity, and time complexity. 相似文献
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在分析基于图像处理的人数统计方法基础上,提出基于图像边缘检测的人数统计新方法。分别采集室内彩色背景图像和目标图像,分别计算灰度图像的边缘检测结果,求出二者的差值图像后,连接边缘、填充为连通区域,计算目标图像中的人数。实验证明：该方法能满足室内人数比较多的人数统计要求,具有速度快和准确率较高的优点。 相似文献
8.
Melanie Booth‐Butterfield Steven Booth‐Butterfield Jolene Koester 《Communication Research Reports》2013,30(2):146-153
Two studies manipulated levels of uncertainty and employed self report, observer‐ratings, and behavioral coding to assess primary tension in groups. Results indicate that a) participants cannot differentiate levels of primary tension in groups, b) observers can reliably detect differences in primary tension behaviors, and c) these tense group behaviors decrease as uncertainty is effectively reduced. 相似文献
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关联交易因其自身特点本应成为有利于企业内部化、节省交易时间、降低交易费用、提高公司运营效率、获取规模经济效益等的有效手段。然而,以不对价为基础的非公允关联交易,严重损害了债权人的利益。非公允关联交易损害债权人利益有几种表现形式,要解决好关联交易当中的债权人保护问题,应该建立良好的关联交易会计审计制度以及完善公司治理结构,平衡市场主体之间的利益,保证公司在市场经济当中的健康发展。 相似文献
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论信息化学习方式及其数字资源形态 总被引：2，自引：0，他引：2
社会信息化的发展带动学习方式的变革。传统学习方式（精加工学习方式）和信息化学习方式（贯通式学习方式）的根本区别在于对知识加工理解的差异,传统精加工教学方式的惯性可能将制约学习方式的变革及当前数字学习资源的生产方式,但以自主、探究和协作为基本特征的新型学习方式已经在非正式学习环境和相关培训中被尝试和接受,个体任务型、微型课件型、过程体现型、小组合作型和邻近经验型等典型数字资源形态逐渐成为学习资源的主流形态。 相似文献