蓬勃发展的台湾珠算（三则）

在93年海峡两岸珠算通讯比赛和学术交流等活动的带动下，近二个月以来，在台湾，各项珠算活动接连不断，各珠算团体积极举办各类比赛和鉴定活动，珠算活动在社会群众中形成了热潮。     

Information for Contributors

1 Chinese Journal of Acoustics is the publication of the Acoustical Society of China and the Institute of Acoustics, Chinese Academy of Sciences, to promote the international understanding and collaboration in the field of acoustics. It publishes original works in all branches of acoustics in China. Contributions from invited guests and friends overseas are also solicited.     

A Weighted Evolving Network with Community Size Preferential Attachment

Community structure is an important characteristic in real complex network. It is a network consists of groups of nodes within which links are dense but among which links are sparse. In this paper, the evolving network include node, link and community growth and we apply the community size preferential attachment and strength preferential attachment to a growing weighted network model and utilize weight assigning mechanism from BBV model. The resulting network reflects the intrinsic community structure with generalized power-law distributions of nodes＇ degrees and strengths.     

Cluster Consensus of Nonlinearly Coupled Multi-Agent Systems in Directed Graphs

We investigate the cluster consensus problem in directed networks of nonlinearly coupled multi-agent systems by using pinning control. Depending on the community structure generated by the group partition of the underlying digraph, various clusters can be made coherently independent by applying feedback injections to a fraction of the agents. Sufficient conditions for cluster consensus are obtained using algebraic graph theory and matrix theory and some simulations results are included to illustrate the method.     

社会网络环境下保护少数意见的风险性大群体应急决策方法

大群体决策过程中,少数意见十分重要,但考虑少数意见又有一定风险性,本文提出了一种社会网络环境下保护少数意见的风险性大群体应急决策方法。首先,利用自然语言处理技术对社交媒体中公众对突发事件的传播信息进行关键词提取,再采用TF-IDF技术提取公众关心的事件属性并确定属性权重;其次,将专家之间的联系考虑到决策当中,构建决策专家之间的社会网络关系;然后,建立少数意见的识别和风险测度机制,并定义了两个风险系数:信任风险系数和偏好风险系数,通过少数意见聚集的信任风险系数调节少数意见聚集的权重,通过偏好风险系数调节群体共识,以得到共识水平较高的大群体决策方案;最后,通过“7.1”宁乡洪灾案例分析,验证了所提方法的可行性和有效性。     

将生产资料分类的社会扩大再生产图解法

运用空间解析几何的作图方法,直观并且简便地获得将生产资料分类的社会扩大再生产的解,以及有解的充分必要条件.     

环境会计近了

近年来,诸多公司出现了集体“漂绿”的行为。在环境会计的概念尚在探讨阶段,制度远未成型之际,企业为环保所付出的努力,究竟是一次披着“社会责任和可持续发展”外衣的T台秀,还是洞悉时势后做出的一种战略性考量？     

中考关注家电下乡政策

2008年爆发的国际金融危机,影响全世界.中国政府为抵御金融风暴,振兴社会经济,采取了一系列措施,其中实施的家电下乡惠农政策有力地拉动了社会内需.2009年许多省     

文学作品中的算盘文化

<正>不论是诗歌、散文,还是小说、戏剧,一切种类的文学艺术"都是一定的社会生活在人的头脑中的反映的产物"(毛泽东语),那么,我们通过对文学作品中的算盘文化的研究来反观"一定的社会生活",丰