战术应用终端体系结构设计与分析

战术应用终端是战术应用系统的重要组成部分,其性能的优劣将直接影响整个系统 的应用效果。针对高分辨率对地观测系统终端用户的战术应用需求,对战术应用终端总体技 术进行了研究,总结了战术应用终端的研究现状与应用状况,对战术应用终端体系结构、功 能组成和型谱进行了设计,分析了其中的关键技术,为构建高效、通用、一体化的战术应用 终端提供了顶层指导。     

基于完全成本的碳酸稀土理论价格研究——兼论中国稀土资源定价机制改革

文章基于完全成本核算了2008-2010年碳酸稀土的理论价格,并与国内市场价格和出口价格进行了比较。研究发现,碳酸稀土的国内价格严重偏离其理论价格,市场价格严重扭曲。出口管制政策是校正稀土市场价格扭曲、弥补稀土资源折耗成本和生态环境外部成本补偿不足的一种手段,为我国政府在本次稀土国际贸易争端中提出出口管制政策是"基于保护资源和环境的考虑,为实现可持续发展"的观点提供了经验支持。破解当前稀土生产与出口内外困局的关键是改革稀土资源价格形成机制。文章提出了按照市场化原则和WTO规则改革稀土资源定价机制的政策建议。     

水电站建成后保护植物的恢复利用研究——以云南省李仙江土卡河为例

我国是世界上生物多样性最丰富的国家之一,也是水电资源丰富的国家。多年来,在许多水电站开发后的植被恢复过程中大规模地有意或无意引入外来物种,造成当地的生物多样性丧失,而且很难恢复。文章选择的云南省李仙江土卡河流域为一条国际河流,该流域分布的热带雨林是我国境内生物多样性程度最高、热带生物资源和基因资源最丰富的区域之一。文章根据水电工程建设环境保护工作的实践,分析水电建设对生物多样性的影响,研究水电建设中陆生珍稀保护植物恢复利用情况和具体措施,为今后水电建设生物多样性保护提供借鉴。     

海德格尔的艺术之思

什么是艺术?无论人们如何地自以为"是",无法规避的依然是"是"本身;"人是……"始终是那条作为终有一死者的人由之而来又复归而去的道路,即"存在和人之本质的关联"的道路。而"艺术"作为这条道路的一部分,仍然是有待深思的字眼。笔者尝试从《艺术作品的本源》一文出发,探索海德格尔艺术之思的独特境域。     

中国罕用药产业政策研究

罕用药产业政策指国家对罕用药产业活动所进行干预的法律或政策的总称。实践证明,相对完善的罕用药产业政策,对纠正市场失灵、推动医药产业的创新与发展、维护罕见病患者社会权益以及减少社会运行成本等,都具有重要的意义。本文立足于我国经济与社会发展的实际,针对影响我国医药产业发展的现实因素,指出以产业政策推动我国罕用药产业发展正当其时,在研究、借鉴西方发达国家成功经验的基础上,主张现阶段罕用药产业政策应当以价格调整为导向,形成以价格补贴为核心的政策体系。在论证罕用药价格分析模型后,提出了系统的政策建议。     

山东省的珍稀植物及其经济价值

山东省境内的主要珍稀植物有５７种、它们分属于３５科５４属。分析了保护这些珍稀植物的重要性及措施。     

人地系统及其协调发展

人地系统是由人类社会系统和地球自然物质系统交互作用而成 ,它们之间的竞争和协同推动人地系统的演进。协调人地关系就在于协调两个子系统之间物质、能量、信息的输入和输出关系 ,使它们保持动态平衡。本文在具体分析了人类社会系统和地球自然物质系统之间的相互关系和作用后提出了协调措施。     

Network modeling approaches for calculating wholesale NGA prices: A full comparison based on the Greek fixed broadband market

According to the European Commission Recommendation for setting copper and fiber wholesale prices where cost orientation is imposed as a remedy, National Regulatory Authorities (NRAs) should adopt a Bottom-UP Long-Run Incremental Cost Plus (BU LRIC+) costing methodology that estimates the current cost that a hypothetical efficient operator would incur to build a modern efficient Next Generation Access (NGA) network. The starting point of modeling an efficient operator investing in NGA networks is the network modeling approach. In this paper, we compare the most widely adopted network modeling approaches in terms of wholesale fiber-to-the-home (FTTH) prices. In particular, the modified scorched node approach is compared to the extreme cases of the scorched node and the scorched earth approaches. The comparison between the aforementioned scenarios sheds light on the impact of each approach on the wholesale FTTH prices. The main finding of this paper is that the scorched earth approach leads to a maximum of 10% reduction in the short-term access prices compared to the most inefficient scorched node approach, whereas further extending its optimizations by optimizing the number of central offices, both the short-term and long-term wholesale price reductions are quite significant (more than 20%) regardless of service speeds. Consequently, NRAs should consider a geographically differentiated modeling approach when regulating the wholesale market by adjusting the level of scorching in each area and network segment according to the investment plans of telecom operators. An appropriate variation of the modeled network operator's efficiency is expected to more accurately represent the costs of a reasonably efficient operator based on the real market conditions and a forward-looking perspective. These findings provide valuable information to both network operators and telecom regulators.     

优化冻土地区路基结构设计提高道路使用性能

在道路施工中,为了确保道路的使用功能、延长道路的使用寿命,需要高度重视路基的设计结构,对于冻土地区来说更是如此。本文通过勘察、调查冻土地区的实际情况,指出冻土地区路基设计原则,同时通过对不同路段采用不同设计参数,研究相同荷载作用下路基破坏程度,用于指导冻土地区路基设计,为冻土地区路基结构设计提供参考依据。     

Form or substance: the role of business plans in venture capital decision making

We explore a well‐known instance of fast decision making under high uncertainty, venture capital (VC) opportunity screening. We analyze a sample of 722 funding requests submitted to an American VC firm and evaluate the influence of the form of the submission and content of business planning documents on VC funding decisions. We improve on prior literature by a) using a large sample of known representativeness, b) relating request characteristics to actual VC decisions, and c) developing an inferential logic that takes account of the multiple sources of information to which VCs have access. We find that the presence of planning documents and some information contained therein are weakly associated with VC funding decisions. Based on our inferential strategy, we find that this information is learned independently of its inclusion in the business planning documents. Copyright © 2009 John Wiley & Sons, Ltd.