商品出口贝宁安全须知

根据目前国内贸易商遇到的种种情况,我处将贸易活动中应予以关注的情况提示如下:贝宁贸易规定根据贝宁共和国于1990年5月15日制定的关于在贝宁境内从事贸易活动的90-005号法律条款的规定,在贝宁从事任何贸易活动和贸易服务都是自由的。     

Making Banks in Europe More Responsible

The financial crisis is still hitting families and businesses across Europe hard.We can't let such a crisis happen again and we can't allow the actions of a few in the financial world to jeopardise the rest of society. The IMF estimates European banks made losses close     

S&P Downgrade Positive for China's Stock Market in the Long Run

The Standard & Poor's(S&P) rating agency announced Friday night(August 5) that it has downgraded the U.S.debt from a stellar AAA rating by a notch to AA+,and lowered the outlook on the new U.S.credit rating to negative, indicating that another downgrade was possible within one year or two.After the downgrade,it was largely expected     

副面修正卡塞格伦天线设计中的几个问题

本文根据几何光学理论,介绍了副面修正双反射面天线组合馈源相位中心的计算方法.并利用并矢反射系数,导出了包括差波束在内的副面散射场及天线口径分布,因而解决了副面修正天线性能参数的计算问题.     

C波段双栅砷化镓场效应管三倍频器的研制

本文介绍了将双栅GaAs MESFET应用在三倍频器上的工作原理,设计思想,实验研制及在C波段的实验结果.这种三倍频器具有一定的倍频增益.目前国内还未见到同类产品.     

雷达杂波谱参量估计及其在自适应滤波中的应用

本文结合自适应滤波技术在地面监视雷达信号处理中的工程应用,提出一种利用自相关法实时估计杂波谱参量,并根据统计参量自适应控制滤波器的方法.采用门限判决法,改善了杂波空域分布不均匀和目标引入对杂波谱参量估计带来的误差.文中特别对自适应滤波技术的实际工程应用问题进行分析讨论.经理论分析和计算模拟论证了该方法的正确性和可行性.最后结合工程实践,给出采用TMS32020数字信号处理器实现杂波谱参量估计和自适应控制滤波器的方案设想.     

加速培养高层次人才的价值分析

高等院校是培养高层次人才的基地,而人才培养主要通过学校的教学来实现.本文利用“价值分析方法”论述了高校怎样投入人财物,保证教学功能,产出一流人才.     

中国农产品流通发展报告(下)

本文认为,我国农产品物流模式主要有全国性物流、区域性物流、地方性物流和产地物流等多种模式;当前小规模且分散的农产品生产方式与大市场、大流通和多品种、多样化消费需求形成的矛盾,导致一些农产品流通成本居高不下,或因流通渠道不畅,影响了农民的生产积极性;消费需求的变化将推动我国农产品流通向更好、更有价值的方向发展;政府应进一步重视现代农产品流通市场体系建设,坚持以市场需求信息为载体,走新型农商道路,让农民种植有信心,销售有渠道,并真正从农产品交换中获利.     

Effects of the matching fund program on IPO and bankruptcy of SMEs in Korea

Most small and medium enterprises (SMEs) in Korea struggle in financing R&D. Thus, the Korea Core Industrial Technology Investment Association (KITIA) was established to implement a matching fund program (MFP) to help SMEs with this undertaking. Applicant firms to the MFP are reviewed first based on their technology levels and are required to attract financing from venture capitalists (VCs), before receiving funds from the MFP. This paper, based on KITIAs MFP applicant data from 2001 to 2004, evaluates the performance of the MFP in terms of the success rate of funded SMEs’ initial public offerings (IPOs) and bankruptcy rates in relation to those SMEs that could not attract matching funds. Propensity score matching was used to eliminate selection bias from the data in order to assess the actual treatment effect of the MFP. According to the result of logistic regression applied to the matched data, MFP apparently did not have significant effects on IPO success and bankruptcy. This implies that MFP needs to allow VCs more time to evaluate SMEs covering qualitative aspects as well. It is expected that this change of structure can provide better performance of MFP in terms of IPO success and bankruptcy of matched SMEs.     

When will payoff maximization survive? An indirect evolutionary analysis

Survival of payoff maximization is the usual as if-justification for assuming rational economic agents. An indirect evolutionary analysis allows for stimuli which are not directly related to reproductive success although they affect behavior. One first determines the solution for all possible constellations of stimuli, and then the evolutionarily stable stimuli. Our general analysis confirms the special results of former studies that payoff maximization in case of commonly known stimuli requires either that own success does not depend on other's behavior or that other's behavior is not influenced by own stimuli. When stimuli are private information, one can derive similar necessary conditions.