天地一体化信息网络中天基卫星网络架构设计

为了充分利用各种空间设施资源，提升天基信息网络覆盖与传输能力，分别从天基信息网络体系架构和逻辑功能架构角度进行了系统性设计。与以往天基网络的设计不同，该设计更注重各类卫星网络的深度融合应用，为此将网络虚拟化技术引入天基卫星网络。同时，还提出了解决新架构下卫星组网难题的方法，将电磁涡旋、卫星灵活载荷和边缘计算技术设计到天基网络。仿真表明，所提出的架构能有效提升频谱利用率和减少卫星网络信令开销。     

Debt Issue Costs and Issue Characteristics in the Market for U.S. Dollar Denominated International Bonds

This paper analyzes the issue costs and initial pricing of bonds in the international market. In particular, we investigate the determinants of three components of issue costs: underwriter fee, underwriter spread (the difference between the offering price and the guaranteed price to the issuer), and underpricing (the difference between the market price and the offering price). Total underwriter compensation increases with the bonds' credit risk and maturity, but it is insignificantly related to issue size. Interestingly, underwriters appear to price some issue characteristics directly (by adjusting the fee) and other characteristics indirectly (by setting the guaranteed price). The two compensation components (fee and spread) are negatively related to each other. We provide evidence that this trade-off is consistent with income tax considerations, as well as with two-tier pricing by underwriters. We find no evidence of underpricing.     

我国商业银行与外资银行合作探讨

在国际金融业并购的背景下，中国银行业面临入世后的竞争压力，吸收外资不仅能增强国内商业银行实力，更重要的是能给银行带来了先进的管理理念，把国内商业银行日益改造成符合国际标准的银行；对外资银行而言，与中资银行合作乃绕过管制，低成本向中国市场扩张，实现本土化发展战略的最佳选择。     

Intraday Lead-Lag Relationships Between the Futures-, Options and Stock Market

In rational, efficiently functioning and complete markets, returns on derivative and underlying securities should be perfectly contemporaneously correlated. Due to market imperfections, one of these markets may reflect information faster. The use of high-frequency data and the choice for a small unit time interval to measure these lead-lag relations comes at the cost of some or many missing observations, causing traditional estimators to either under- or overestimate covariances and correlations. We use a new estimator to estimate lead-lag relationships between the cash AEX index, options and futures. We find that futures returns lead both options and cash index returns by approximately 10 minutes. The relationship between options and the cash market is not completely unidirectional.     

Programme Evaluation with Unobserved Heterogeneity and Selective Implementation: The Mexican PROGRESA Impact on Child Nutrition

This paper considers the impact of Programa de Educación, Salud y Alimentación ( PROGRESA ), a large Mexican rural anti-poverty programme that had an evaluation sample in which overall treatment was randomly assigned to some communities but not others, on child nutrition. When we examine the impact of PROGRESA based on the presumption of randomized allocations, we find that PROGRESA had no or even a negative impact on child nutrition. However, not all children designated to receive nutritional supplements actually did so. Our preferred estimates – child fixed-effects estimates that control for unobserved heterogeneity that is correlated with access to the supplement – indicate a significantly positive and fairly substantial programme effect of the nutritional supplements on children 12–36 months. They imply an increase of about a sixth in mean growth per year for these children and a lower probability of stunting. Effects are somewhat larger for children from poorer communities but whose mothers are functionally literate. The long-term consequences of these improvements are non-trivial; its impact working through adult height alone could result in a 2.9% increase in lifetime earnings.     

应用索梁分载法设计予应力梁介绍

本文的目的在于介绍予应力混凝土构件设计采用“索梁分栽法”计算理论根据上的正确性。     

非财务指标在民营企业业绩评价中的应用

民营企业的业绩评价具有辅助决策和自我诊断的功能。在民营企业面临进一步发展的今天,研究民营企业的业绩评价有一定的现实意义。当前我国对民营企业的业绩评价的依据主要是通过各项指标的测评,其中,绝大部分为财务指标。在市场经济条件下,仅靠财务指标来衡量一个企业,是不能全面反映出企业的现有实力和综合发展潜力的。因此,非财务指标与财务指标在民营企业的业绩评价中具有同等重要的作用。     

市场导向下的邮发报刊业务浅析

文章以芜湖市邮政局2005年报刊收订工作为例,探讨了如何以市场为导向做好报刊发行的策划、宣传、收订和服务工作,并对如何整合邮政内外部资源,提高宣传力度,扩大市场份额作了具体阐述。     

董事利益保护刍议

董事会中心主义的确立，董事义务与责任体系的完备，使得对董事利益的保护成为公司经营管理效率提高的必要前提。如何建立符合中国实际的董事利益保护机制是摆在法学研究者面前一个紧迫而重要的课题。