冷战后中美在东亚的制度均势及对中国的启示

冷战结束后,东亚国际关系中出现的新现象是中国的迅速崛起和美国的霸权护持;但与此同时,中美两国之间并未重现冷战时期美苏对抗的局面。中美制度均势可以合理地解释中美互动关系和该地区出现的制度化安全发展趋势。中美制度均势的含义是,中美两国在经济相互依存加深的背景下通过国际制度对彼此实施的机制化制衡。在中美经济相互依存日益加深和共同参与大量国际机制的背景下,中美两国都采取了制度均势行为。在未来相当长时期内,中国的实力仍无法与美国抗衡,在国际体系中无法挑战美国。在中国和平发展的关键时期,我们要避免重蹈日本和德国当年的覆辙,慎言中美对抗。中美制度均势对中美关系发展和中国和平发展的启示在于:中国要继续实施和完善对美制度均势战略;中美都应继续鼓励对方参与东亚地区的国际制度;中美都要继续加深两国间的经济相互依存。     

城乡统筹与协调:中国发展道路的反思与调整

回顾建国以来我国的发展道路,由于受国际、国内环境等诸多因素的影响,中国选择了一条优先发展工业,特别是重工业之路.由此,长期以来我国走的是农业支援工业、农村支援城市的发展道路.进入21世纪后,以胡锦涛为总书记的党中央对国家发展道路及时进行调整,实施工业反哺农业、城市支持农业,采取城乡统筹的方式,走城乡协调发展之路.这既是构建和谐社会的要求,具有较强的理论基础,又有国际经验可供借鉴.     

城乡统筹发展背景下农村宅基地使用权流转问题

现行农村宅基地流转制度存在着宅基地使用权不可转让性与农村住房所有权可转让性、农村宅基地物权与政府公权的矛盾.农村宅基地流转制度缺失严重制约经济结构转型.实行农村宅基地立法理念转变,制定农地分区法,进行农村集体经济组织创新是化解农村宅基地流转问题的现实选择.     

INVESTIGATING ALTERNATIVE APPROACHES TO HARMONISE MULTI-REGIONAL INPUT–OUTPUT DATA

Over recent years a small number of global multi-regional input–output (MRIO) databases were developed to describe the entire global economy at high sector detail. We investigate the differences that arise out of applying different construction procedures for two global MRIO databases: The EXIOBASE database, developed as part of the EU FP6 & 7 programs and the Eora database developed at the University of Sydney. The procedures used in EXIOBASE involve a high degree of interrogation and adjustment throughout the construction of the data set, whilst the Eora MRIO relies on single-step mathematical programming techniques and high-performance computing. We unravel the effect of the different approaches taken to develop the databases by undertaking a number of combinatorial experiments in which we exchange parts of the construction process between the EXIOBASE and Eora build pipelines. We conclude that Eora's highly automated data reconciliation approach produces MRIO databases that are of comparable quality to those constructed with EXIOBASE's multi-step approach. However, the reliability and robustness of the resulting MRIO database largely depend on the level of detail and reliability of the underlying raw data.     

CDN网络关键技术研究及应用

CDN（内容分发网络）,Content Delivery Network的简称,CDN是新兴信息化网络之一,它是在IP网络上搭建而来的,它可以有效地为访问大中型网络的提速,有效地提高工作效率,强化网站信息和数据的安全,并且能够节约网站流量和有效控制成本,提高客户终端的满意度。对服务器配置文件的管理是CDN的运维的关键。     

Optimising balance using covariate balancing propensity score: The case of South African child support grant

ABSTRACT

In this paper, we explore the use of covariate balancing propensity scores (CBPS) in estimating the impact of the South African child support grant (CSG) on the height-for-age score of benefiting children. CBPS is a different approach to estimating propensity score, under CBPS the scores are estimated such that the estimation incorporates covariate balancing condition. This approach is therefore relatively robust to misspecification of the propensity score model which makes it ideal for this case study. We show that utilising the CBPS leads to treatment effect estimate that is larger and more precisely estimated than estimates that have been reported in the literature because the method exploits the dual function of propensity score. The effect of CSG under CBPS is as large as 44% of standard deviation on average. This implies that the effect of the grant cannot be regarded as small as previously reported in the literature.     

电动三轮车装配流水线的平衡分析与改进

在生产线平衡原理及改善方法的基础上,以电动三轮车装配流水线为研究对象,运用工作研究的方法分析工艺流程,测定流水线各工位的作业时间,找出瓶颈工位;运用"5W1H"提问技术和ECRS(取消、合并、重排、简化)原则对流水线进行分析与改进。通过对比分析,改进后该流水线大大节省了空间和人力,工位减少6个,工人减少11个,与此同时,平衡率提高27.6%。     

中继蜂窝网中基于负载均衡的中继节点选择算法

提出了一种中继蜂窝网络的基于负载均衡的中继节点选择策略(Load Balancing Rela y Selection,LB-RS)。根据每个用户的具体信道状况以及中继节点服务的用户数目,LB-RS 以分布式的方式为每个用户选择最优的中继节点。仿真结果表明,与基于单一物理层参数的 中继节点选择算法相比,所提出的中继选择算法综合考虑了物理层的信道状况以及MAC层 的资源与用户状况,有效地利用中继节点选择来实现小区内的负载均衡,获得了吞吐量性能 与用户公平性之间的折衷。     

Ant colony optimization for the single model U-type assembly line balancing problem

An assembly line is a production line in which units move continuously through a sequence of stations. The assembly line balancing problem is defined as the allocation of tasks to an ordered sequence of stations subject to precedence constraints with the objective of optimizing a performance measure. In this paper, we propose ant colony algorithms to solve the single-model U-type assembly line balancing problem. We conduct an extensive experimental study in which the performance of the proposed algorithm is compared against best known algorithms reported in the literature. The results indicate that the proposed algorithms display very competitive performance against them.     

中国保险公司破产重整中行政权与司法权的均衡

保险公司重整程序是一个多方权力参与、相互博弈的过程.如何处理重整程序中行政权与司法权之问的关系,将影响到保险公司重整程序能否顺利进行.我国保险公司重整程序中存在行政权“扩张”与司法权“收缩”的现象,要想使权力结构分配合理,应注重行政权与司法权之间的均衡,在保险公司重整程序中,采取行政权实质决策、司法权终局裁定的权力模式.只有合理处理行政权与司法权的关系,保险公司破产重整才能达到事半功倍的效果.