棉花期货套期保值策略及其效率比较研究

选取中国全部六个交割月份棉花期货合约价格和中国棉花3128B价格指数作为研究对象,构建OLS,B-VAR,ECM和ECM-BGARCH四种模型来估算最优套期保值比率,并应用Ederington法评估套期保值的效率,分析中国棉花期货最佳的套保模型.结果表明,1月、5月、11月份合约的套期保值都能在一定程度上规避价格风险,其中OLS和B-VAR模型的效果最好,最后提出完善期货市场的建议.     

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。     

State-owned enterprises going public The case of China

Public listing is a key reform measure for large state‐owned enterprises (SOEs) in China. We find evidence that public listing lowers state ownership significantly, lessens firms’ reliance on debt finance, and allows firms to increase capital expenditure, at least temporarily. We also find that ownership structure affects post‐listing performance. However, we find no statistical evidence of a positive effect of public listing on firms’ profitability. We suggest alternative interpretations of the last finding.     

知识经济的本质特征及对我国发展机遇的思考

本文在解析知识经济本质特征的基础上,分析了知识经济对我国发展带来的机遇和挑战,提出我国实施知识发展战略,应对知识经济挑战的必要性和具体途径,最后从增强吸收知识、获取知识、交流知识能力三方面提出了相关的政策建议。     

基于FAHP的汽车新产品开发决策评价模型

分析了影响汽车新产品开发决策各种因素,并建立了汽车新产品开发决策的指标体系。将层次分析法与模糊综合评判方法相结合,提出了一种新的定量的汽车新产品开发评价方法。该方法在一定程度上减小了主观因素对评价的影响并使定性问题定量化。最后,用实例说明了该方法的实际应用,并分析了评价结果。     

把地勘单位推向市场的深层次思考

把地勘单位推向市场是地勘业体制改革的必然选择。只有把地勘单位全面推入商品市场、要素市场、特别是产权交易市场,才能从根本上解决地勘单位营运的激励机制和约束机制。把地勘单位推向市场的实质是把地勘单位塑造为具有“四自”能力的市场主体。为此,必须全面转换地勘单位的经营机制,逐步割断其对国家的依赖关系,使其自主选择市场,立足市场。要进一步深化改革目前不彻底、不完善的两权分离,从不对称性两权分离状态走向对称性两权分离状态。     

Reserve price signaling

In a general auction model in which bidders’ signals are affiliated, we characterize the unique separating equilibrium in which the seller can use reserve prices to credibly signal her private information. When the buyers’ signals are independent, the optimal reserve price is shown to be increasing in the number of bidders under certain conditions. We also demonstrate that the probability that the item is sold at the reserve price can increase as the number of bidders increases, which indicates a more central role for reserve prices than perceived in the standard auction models.     

对我国农村教育现状及发展的思考

农村教育是中国教育改革和发展的重点。20世纪90年代中期之后,随着财政体制与农村经济状况的变化,农村教育出现了形势严峻、困难重重的状况。因此,大力发展农村教育,把沉重的人口负担转变为人力资源的优势,不仅是教育发展的重要目标,也是影响现代化建设进程的战略性任务。     

Unemployment Duration and Inflows onto the Disability Support Pension Program: Evidence from FaCS LDS Data

From the administrative data of the Australian Department of Family and Community Services it is found that a large proportion of Disability Support Pension (DSP) recipients transferred from unemployment benefits. Among those who transferred to DSP from unemployment benefits, a large proportion experienced multiple spells of income support receipt prior to the transition and a majority had more than a half‐year pre‐transition unemployment duration, with the average pre‐transition unemployment duration being more than one year. These findings suggest that the unemployment benefit is not simply a‘hold‐on’ benefit for those who experienced the unemployment—DSP transition. This article further examines what factors are associated with the transition. It is found that, among other things, the probability of transition to DSP from unemployment increases with duration on unemployment benefits.     

安徽省农业产值增长制约因素的相关分析

安徽是一个农业大省，从安徽省农业产值13年的数据资料中可以看出，尽管产值有了一定的提高，但是幅度不大。究竟是什么因素制约了农业产值的进一步提高？本文应用Eviews软件对安徽省农业产值时间序列资料进行分析，找出了农业产值增长的关键影响因素，并提出了相关政策建议。