对矿业开发体制创新的思考

目前，“四矿”问题巳引起了社会的广泛关注，解决“四矿”问题的一个十分重要的环节是如何进行产业定位和体制构建。本文从深入副析我国现行矿业开发体制的现状与问题出发，就如何建立适应社会主义经济体制、能促进资源持续供给、矿业开发良性发展和社会可持续发展的具有中国特色的矿业新体制进行系统探讨。     

The effect of the downturn in oil prices on the external surpluses of the GCC countries

The paper examines the impact of the downturn in oil prices on the performance of the external sectors of the members of the Gulf Co-operation Council (GCC). The paper also developes and tests a simultaneous-equations model to examine the interaction between the economies of the GCC and the rest of the world. The analysis shows that the slump in oil exports has reduced drastically the external surplus of the GCC and has resulted in structural shifts in the import and resource balance functions.     

基于可信度的网格资源选择算法

网格资源选择需要使用一个等级评价机制对资源进行评价。文章在可信度理论基础上．从历史经验和实时情况两方面计算资源的可信度，该算法保证资源选择的动态性和全局化，克服了传统上等级评价机制中的信息局部化，经过实例分析，它满足了各项性能要求。     

营销人员业绩评估体系及其计算机实现

本文根据我国市场营销工作的特点设计了科学地评估营销人员业绩的指标体系．该评估指标体系在企业工作面向市场的基本观点的指导下,从营销人员在开拓企业市场应有的职能出发,系统全面地设计了有关的评估指标和评估方法．根据上述评估体系和评估方法,还设计了对营销人员实际进行业绩评估的计算机信息管理系统．作为人力资源管理信息系统的一部分,系统在某企业已实际投用．     

CDMA蜂窝网中的无线资源管理

本文对CDMA蜂窝网络中的无线资源管理研究作综述。内容包括功率控制、接纳控制、越区切换和无线分调度等方面，并考虑了多种业务下的服务质量。     

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河东地区位于鄂尔多斯盆地东部，面积１．６×１０４ｋｍ２，煤层气资源量４．５×１０１２ｍ３，占全国煤层气总资源量的１２．８％。该区是今后５～１０年我国煤层气勘探开发的重点地区之一。从该区的煤层气资源背景、构造背景出发，认为河东中部地区是煤层气勘探开发最有利的目标区。理由是：①有利的构造部位可能具有良好的煤层气可采性；②多期生气提供了丰富的煤层气资源；③柳林试验区的勘探实践证明了中部地区具有煤层气勘探开发潜力。作为目前经济不发达的地区，建立河东煤层气主输气管线，是大规模开发煤层气的先决条件。另外，该区还是浅层天然气勘探的有利区，应采取浅层气、煤层气勘探并重，共同发展的策略。     

双段式分布在杏山—莺山断陷煤型气资源预测中的应用

本文分析了巴内托定律存在的局限性,提出了油气田规模分布为双段式模型。综合分析认为,松辽盆地东部杏山—莺山断陷为一个独立的地质单元,因而应用双段式模型计算了杏山—莺山断陷煤型气的资源量。     

Woodlots in the rural landscape: landowner motivations and management attitudes in a Michigan (USA) case study

Woodlots provide important environmental benefits in the Midwestern (USA) landscape, where they are undergoing rapid change. An increasingly diverse farm and non-farm population owns these non-industrial private forests (NIPFs). It is essential to understand what motivates NIPF landowners to retain and manage their forests. We describe a study of NIPF owners in an agricultural watershed where forest cover is increasing. What motivations and management practices might be contributing to this increase? The results of a survey of 112 NIPF owners suggest that aesthetic appreciation is the strongest motivator for retaining woodlots, especially by non-farmers. Protecting the environment also seems to be important for both farmers and non-farmers, while economic motivations are significantly less important. Landowners indicated that they are primarily taking a “hands-off” approach to management. This study provides insights for those interested in understanding NIPF landowners’ motivations and for developing effective programs.     

Ad hoc网络中基于Agent的QoS模型研究

随着网络应用需求的不断增加，网络提供的可用资源也变得越来越复杂，因此对于网络资源的定位与发现工作也显得越来越重要，目前已有多种方法被提出并被讨论过，这些方法在固定式网络中使用效果较好，而对于应用日益普及的Ad hoc网络来说并不适用，本文就Ad hoc网络中的资源发现与获取方法提出了一种新的、基于Agent的模型，在模型中提出了QoS信息路径的产生与管理方法。     

Resource-requirements planning in flexible manufacturing systems

In this paper, we address the problem of planning the requirements of some of the important resources in flexible manufacturing systems. Specifically, we model the problem of estimating the required numbers and types of machines and tools in the context of a cellular layout. A two-stage procedure is developed which first forms the part families, using the complete-linkage clustering method based on a new similarity index defined in terms of the tooling requirements, and then subsequently estimates the resource requirements to manufacture the part families using an integer programming model. Several variations of the model are discussed and a numerical example is given.