Turbo-DFH迭代译码算法

针对Turbo-DFH系统的特点,提出了修改的SOVA算法,用于迭代译码过程中子译码器软输出的计算。在AWGN信道下,对Turbo-DFH系统的性能进行了计算机仿真。仿真结果表明Turbo-DFH系统的误比特率性能比采用维特比检测算法的传统DFH系统有明显改善。     

Agriculture,communities, and new social movements: East European ruralities in the process of restructuring

This paper examines the usefulness of the new social movements (NSMs) paradigm in the changing context of East European post-communist societies and their agricultural systems and rural communities. Starting with statements formulated in Western sociology in the context of Western democratic societies about NSMs as a protest against modernity, the paper analyses the role of such movements in the still modernizing Eastern European reality. The first part of the paper briefly examines some basic elements of the NSMs paradigm in European and American social science. The goal of this section is not only to identify the basic characteristics of NSMs, but also to identify the typical frames used by them. The second part of the paper focuses on the presence of NSMs in the communist era. Drawing on the idea of NSMs as indicators of a ‘post-materialist shift’ as well as of ‘anti-establishment’ and ‘pro-participatory democracy’, the paper examines the frames of democratic opposition in Eastern Europe before 1989. The final part of the paper considers several selected examples from Poland, Hungary, and the Czech Republic to explore the role of NSMs in the process of shaping new ruralities during the post-communist transformation.     

网格计算环境下的虚拟组织管理模型研究

20世纪60年代以来,企业所处的环境发生了根本性的变化。顾客需求日趋多样化和个性化,市场竞争更加激烈,企业的竞争优势很大程度上取决于企业本身的市场应变能力。基于此,虚拟组织管理应运而生。本文对网格计算环境下的虚拟组织管理进行模型研究,建立起网格计算环境下虚拟组织管理中信息传递的最优化模型,并与非网格计算环境下的模型进行比较分析,论证了网格计算环境下的虚拟组织管理具有高效数据处理和充分利用闲置资源的优势,因而是未来虚拟组织管理发展的趋势和方向。     

论国家是当代中国农村土地法律制度发展的重要推动力

制度的变迁有强制性变迁与诱致性变迁之分。在中国农村土地法律制度变迁的历程中,国家始终发挥着极为重要的影响。理论与中国土地的现实情况为国家作为当今中国农村土地法律制度变迁的重要推动力提供了坚实依据。     

社会转型时期我国城市贫困的原因及扶贫对策

贫困是世界各国普遍存在的一种社会现象,消除贫困是全人类的共同愿望。我国随着经济体制改革的深入,经济成分、经济利益、就业方式、以及社会组织形式的多样化,人民群众生活在总水平不断提高的同时,却出现了相当数量的城市贫困人口。如何使这一群体摆脱困境,已成为全社会广泛关注的一个问题。     

企业并购:基于相对交易成本视角的初步研究

科斯提出的交易成本理论可以用于解释商业活动在企业和市场之间的转换,强调了节约交易成本是企业形成的一个重要因素,但却忽略了组织能力亦是制度选择中的重要变量.该文将交易成本的节约和企业组织能力的提高结合起来,从相对交易成本的角度考察并购的成因,一方面用相对交易成本来解释企业与市场的替代关系,另一方面从相对交易成本的变化来探索并购的可预测性.     

农村社会养老保险制度变迁路径依赖及创新

在农村传统养老保障制度安排出现不均衡的情况下 ,我国政府从 2 0世纪 80年代中期开始推行农村社会养老保险制度改革。然而 ,由于新供给制度的路径受初始制度安排的影响 ,制度变迁显示出强烈的路径依赖特征。如何退出这种非绩效的闭锁状态 ,是建立现代农村社会养老保险制度的关键。     

Changes in conjugal life in Canada: Is cohabitation progressively replacing marriage?

This article aims first to contrast the trends of marriage and cohabitation across different regions in Canada, and second, to assess whether cohabitation constitutes a new stage in the progression to marriage, or an alternative to marriage altogether. Based on various empirical demographic indicators, the analysis shows profound differences across the country. In Quebec, cohabiting unions are now widely accepted as forming the basis for family life, whereas they still largely constitute a childless prelude to marriage elsewhere in Canada. The authors discuss the role of different religious and cultural backgrounds, and of recent changes in the relationships between men and women, in accounting for the divergent evolution observed.     

论劳务派遣向正式雇佣的转换

劳务派遣的超常发展背离了立法本意,产生严重的负面效应,其回归理性发展轨道的路径之一在于向正式雇佣转换。基于用工自由与社会公正相平衡、法律管制与放松管制相协调、劳务派遣的过渡性特征等政策考量,劳务派遣转正具有充分正当性。在法律管制升格的背景下,劳务派遣向正式雇佣转换成为刚性的要求,因之在法律上需提供转换进行的通道和规则指引。对超出法定适用范围的劳务派遣,可以强制性地法律拟制为在用工单位与劳动者之间成立直接劳动关系,但应以不违背劳动法理的方式进行。合理范围内的劳务派遣,亦可依当事人协商机制而转化为直接雇佣。     

Asian Families at the Crossroads: A Meeting of East,West, Tradition,Modernity, and Gender

East Asian societies have undergone major changes in the past few decades, including substantial declines in marriage and fertility. This article introduces the special section of Asian Families in Context by sketching commonalities and variations in patterns of marriage and family behavior in this region. A discussion of relevant theoretical frameworks from the Western literature follows. The final section briefly introduces the 6 empirical studies that comprise this section and discusses their relevance for developing and refining theory relevant to understanding family change in East Asia.