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排序方式: 共有545条查询结果,搜索用时 15 毫秒
21.
将Web技术与商务智能相结合,设计了国际油气勘探开发项目风险评价决策支持系统的架构,通过分析架构中的主要模块及其功能,阐述了该评价决策支持系统的工作机制和系统开发设计。最后,通过一个国际油气勘探开发项目经济风险评价案例,验证了该系统的智能性、可操作性和可视性。  相似文献   
22.
Previous studies often examined how a broad-based institution affects foreign direct investment (FDI) flows across countries. However, analysis of differential impacts of two or more constituent institutions within a broad-based institution appears to be more useful for policy decision-making. There is a paucity of studies on how constituent institutions within a broad measure of institution affect FDI across countries. Our article constitutes the first attempt in bridging this gap. In this article, we examine the relative effects of property rights institution (PI) and contracting institution (CI) on investment flows. Our results show that PI is much more important than CI in determining the cross-border flows of FDI and affiliate sales. Moreover, PI is found to be more important for FDI than for affiliate sales, indicating that final goods are less of a concern for being expropriated by governments and powerful elites than capital goods. Through unbundling a broad-based institution and examining how the constituent institutions affect investments flows, our article provides practical location decisions for investments in FDI, mergers and acquisitions (M&A) and affiliate sales.  相似文献   
23.
Charitable foundations and government programmes should endeavour to allocate their limited resources to best serve their constituents. Yet, mathematical programming techniques are rarely used despite overwhelming evidence of their superiority in selecting projects that yield higher levels of total benefits. We present a novel ‘hybrid selection model’ that combines binary linear programming and heuristic rank-based models applied to two case studies. The first case focuses on providing services to women and shows a hybrid model would have selected the top three ‘signature’ projects and maintained an above-average overall project benefit while securing a 180% improvement in the number of projects funded, a 66% improvement in the number of women served and a 132% improvement in the total benefit achieved. In the second case, we apply the hybrid approach to data from the US government’s largest forest preservation programme and demonstrate that the hybrid approach could allow the programme to select up to 11 top-scoring projects while still achieving a 97% gain in the total overall benefit compared to their traditional method. These case studies show that the hybrid approach has the potential to be applied in a variety of settings and improve how foundations and programmes achieve their goals.  相似文献   
24.
Group decision-making: Head-count versus intensity of preference   总被引:1,自引:0,他引:1  
This paper puts forth a framework for reshaping the group decision-making process. The proposed framework extends from the usual one-issue-at-a-time decision-making to one that involves several related issues simultaneously. Weaknesses of the traditional majority voting mechanism are first identified, and then a different voting method that takes each individual voter's sentiment into account is discussed. Specifically, a decision-maker is asked to express his/her intensity of preference for the issues encountered. Three hierarchical structures—benefits, costs, and risks—are developed to evaluate the alternatives. Due to the nature of pairwise comparisons and synthesis, the proposed method is amenable to consensus building and has higher reliability and consistency. It can be used for candidate selection, e.g. governmental election, when a large population is involved. It is also effective for resource allocation and prioritization when a small group or business is concerned. We believe the proposed approach has potential for resolving deficiencies of the conventional voting mechanism, and can be applied to many real-world problems. Its implementation on the Internet is also discussed.  相似文献   
25.
We study the effect of social information on the voluntary provision of public goods. Competing theories predict that others' contributions might be either substitutes or complements to one's own. We demonstrate a positive social information effect on individual contributions, supporting theories of complementarities. We find the most influential level of social information is drawn from the 90th to 95th percentile of previous contributions. We furthermore find the effect to be significant for new members but not for renewing members. In the most effective condition, social information increases contributions by 12% ($13). These increased contributions do not crowd out future contributions.  相似文献   
26.
The calculation of Ecological Footprint (EF) on the basis of Input-Output model (I-O model) was advanced by Bicknell, and modified and improved hy Ferng who corrected the footprint's aggregation to each sectors. For the lack of sufficient teehnique to deal with the trade between the research areas and the rest of the world, it it necessary to improve this method. And a dynamic analysis of the change of footprint based on I-O model, which could explore the factor impacting the footprint using the ,special advantage of I-O model, ought to be put into practice. After introducing the new method in detail, we calculate and compare the EF and the change of Gansu Province in the northwest of China in 1997 and 2002. The result shows that there was an increase of EF in 2002 caused by final domestic demand. Further; the inerement in EF export was 2.0 × 10^5 ha and 1.6 × 10^6 ha in import. The out-of- region support dropped from 22.6% to 18. 6%. We introduce three factors causing the EF change based on the character of I-O model: the productivity of the resourve which is explained by the change of resource used to obtain one unit output in a sector, the improvement of the economics and the final demand. Finally, we find that the effects of the three factors on the EF change are not identical except the industry sectors and the change of factors in the agriculture and the industry sectors works notably.  相似文献   
27.
基于事件系统理论,应用探索性案例研究方法,以两家本土知名制造企业为纵向研究案例,揭示创新氛围、创新能力、创新开放度在创新质量提升中的作用,可为其它制造企业提供指导。研究发现:事件空间、事件强度影响制造企业创新能力,企业在被动性事件中通过利用性创新能力识别创新机会,在主动性事件中通过探索性创新能力获取创新机会和资源;创新氛围有助于促进利用性创新能力向探索性创新能力转变,创新开放度有助于提升主动性事件对创新质量的促进效果;在制造企业成长历程中,被动性事件和主动性事件的交互作用形成创新质量提升的正反馈,被动事件变少、主动事件变多,创新质量得以提升。研究结论对中国本土制造企业如何在复杂动态的事件环境中进行创新管理、促进创新质量提升具有一定实践启示。  相似文献   
28.
江兵  尚举 《价值工程》2011,30(30):3-5
论述了基于知识管理的企业技术创新集成络模网式,指出知识管理的核心是知识集成与知识激活。分析建立了通过信息技术直接进行信息、知识和技术的积累、筛选、传递、共享和整合,使分散的专业知识转换为系统的、具体的知识的知识集成机制,以及使外界信息、知识在创新主体中传播、反射、折射,传输不同观点和意见,最后形成基于企业文化和人员素质之上的新创意的知识激活机制。具有紧密压缩的知识管理立体结构的集成络模网式,为企业技术创新信息化、网络化提供了存在的技术平台。  相似文献   
29.
吕向阳  高尚 《价值工程》2011,30(24):147-149
简述了江苏省教育厅在本科品牌专业、特色专业验收时的验收标准。利用支持向量机建立了品牌专业、特色专业验收时的验收模型。通过实例,结果表明支持向量机比较精确和有效。  相似文献   
30.
农业企业化经营既是社会主义市场经济体制的要求,也是农业现代化和家庭联产承包责任制发展的一种必然结果。农业企业家是农业企业的核心人物,是新农村经济开发的领导者。文章提出了农业企业家培育机制模型,并系统提出相应对策主张。  相似文献   
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