我国第三方物流发展刍议

作为一种典型的现代物流运作方式，第三方物流受到了社会各界的密切关注。然而，在我国第三方物流的发展却不容乐观，对此，需方企业必须转变思想，顺应潮流发展；物流供应商应努力提升综合实力，不断增强服务功能，提高服务水平；此外，政府要大力支持、科学调控，唯其如此，第三方物流才能得到快速发展。     

Saving–investment correlations, capital mobility and crowding out: some further results

This study attempts to reassess the evidence on the degree of capital mobility and crowding out by applying a varying coefficients model to data on 19 OECD countries over the 1971–1999 period. Our period-specific results strongly support the crowding-out effect as well as the low capital mobility argument for this group of countries as a whole. However, the strength of the crowding-out effect appears to weaken and the degree of capital mobility to increase in the 1990s as compared to the 1970s and 1980s. We also classify countries into five groups according to the relative size of the government sector. Our group-specific results indicate that the degree of capital mobility is generally lower and the crowding-out effect generally stronger, in country groups with smaller governments. The differences are especially evident when we compare the group with largest government size with all other groups, those differences between the latter being much more modest. However, significant differences in the country-specific results suggest that it is prudent to be cautious when we draw conclusions about crowding-out and capital mobility for specific countries from the period-wise or group-wise results. This is particularly important in drawing policy implications for specific countries.     

基于委托-代理的“走出去”或贸易选择分析

目前，我国企业进入国际市场主要采取两种途径：对外直接投资和进出口。除了政策引导外，企业选择“走出去”还是“进出口”需要进行经济分析。委托一代理理论可以给企业提供一个新的分析框架。从委托人的视角看，委托一代理成本一收益法可以衡量代理的效率。从代理方看，由于存在道德风险，声誉机制可以在一定程度上防止代理问题。在声誉机制下，如果子公司管理者选择任职，则企业可以进行对外直接投资；如果管理者选择离职或失业，则企业会通过贸易利用国际市场资源。     

接口是计划生产的关键

本文通过笔者经历的几个普通案例,阐明了生产计划在计划生产中的重要作用和生产计划编制的严肃性、系统性问题,而接口又是计划生产中最值得关注的事项。     

论虚拟企业组织

虚拟企业组织是相对于实体组织而言的，它意味着实体企业组织的某些职能的“虚拟化”。虚拟企业组织存在的物质技术基础是计算机网络技术，它属于经济活动的一种混合组织形式，本质上是包买商制度在计算机网络时代的变形。不可能存在“虚拟经济”，因为虚拟企业组织与实体企业组织是相互依存的。     

RESTRUCTURING THE NHS AGAIN: SUPPLY SIDE REFORM IN RECENT ENGLISH HEALTH CARE POLICY

Introducing market-like structures to public services is a key aspect of New Public Management. The restructuring of the NHS into an internal market of the 1990s is an example. Recent policies have further developed this notion. A new aspect of the restructuring is a focus on increasing the diversity of types of provider of healthcare organisations. The objectives of the restructuring policy entailing the increase in supply side diversity are examined, and the challenges raised by these changes are discussed. It is argued that the government is too optimistic about the benefits, and insufficiently concerned about possible undesirable consequences.     

地勘单位产权制度改革“引”与“退”的几点思考

地勘单位产权制度改革进展缓慢,存在着思想认识、理论指导和实践操作的问题。这些问题都应在改革中逐步解决。地勘单位在产权制度改革上要敢于大胆地引进和大胆地退让,以实现股权多元化。要处理好“引”与“退”的辩证关系,有计划地引进、有计划地退让。根据不同项目、不同领域的具体情况确定参股或控股,以使地勘单位走上所有制多元化之路。     

基于挤出效应的住房保障规模对商品住房价格的影响

中国房地产市场中保障性住房的角色和作用愈加重要,保障性住房建设规模正在逐年扩大.商品住房价格变化是供给需求作用的结果,但是随着保障房供给规模的增加,商品住房价格的涨幅也会发生改变,说明保障房的供给规模会对普通商品房的供需产生影响.本文以北京市商品住房市场为例,选取住宅需求、住宅供给、住房投机对价格的影响为自变量,住宅价格为因变量,利用多元回归模型对商品住房价格变化进行实证研究,同时通过考虑保障房供给对住房市场产生的不同挤出效应,分析保障房供给规模供需变化对房价产生的影响,进而为政府制定相关的住房保障政策提供建议和对策.     

七通道抗干扰GNSS接收机射频前端设计

针对目前全球卫星导航系统(Global Navigation Satellite System,GNSS)普遍存在的抗干扰能力弱的突出问题,研制了一款七通道抗干扰GNSS接收机,通过利用多模组合导航抗干扰技术及级联/组合空域、时域与频域等多重抗干扰技术来应对复杂电磁环境应用的需求。重点介绍了抗干扰GNSS接收机射频前端的设计方法,通过数理推导给出了产品设计需求与整个射频前端及各级电路的设计指标之间的定量关系,从而提供了在已知设计需求的条件下进行产品正向设计的设计准则与方法。通过产品投产和测试,测试结果与设计需求吻合,从而验证了该套设计方法有效可行,同时该套准则与方法具有很强的普适性。与同类产品比较以及整机试验表明,该产品的抗干扰能力(主要体现为最大可承受干信比)较同类产品提升20 dB以上,证明产品具有一定的先进性。     

Current Situation of China''''s Petroleum Supply & Demand and Change of Circulation System

China's crude supply consists of the imported crude and crude produced by CNPC and CNOOC. In 1996, national crude production reached 157.29 million tons including 141.41 million tons produced by CNPC. Offshore crude production in 1996 soared to 15. 01 million tons, up 78% from 1995. In 1997, China will produce, import