全文获取类型
收费全文 | 24721篇 |
免费 | 753篇 |
国内免费 | 389篇 |
专业分类
财政金融 | 2553篇 |
工业经济 | 1067篇 |
计划管理 | 5025篇 |
经济学 | 4801篇 |
综合类 | 2934篇 |
运输经济 | 318篇 |
旅游经济 | 495篇 |
贸易经济 | 2932篇 |
农业经济 | 2141篇 |
经济概况 | 3597篇 |
出版年
2024年 | 139篇 |
2023年 | 481篇 |
2022年 | 513篇 |
2021年 | 747篇 |
2020年 | 961篇 |
2019年 | 679篇 |
2018年 | 597篇 |
2017年 | 820篇 |
2016年 | 817篇 |
2015年 | 787篇 |
2014年 | 1696篇 |
2013年 | 2041篇 |
2012年 | 1886篇 |
2011年 | 2288篇 |
2010年 | 1749篇 |
2009年 | 1636篇 |
2008年 | 1657篇 |
2007年 | 1530篇 |
2006年 | 1327篇 |
2005年 | 999篇 |
2004年 | 689篇 |
2003年 | 458篇 |
2002年 | 311篇 |
2001年 | 250篇 |
2000年 | 181篇 |
1999年 | 114篇 |
1998年 | 90篇 |
1997年 | 61篇 |
1996年 | 56篇 |
1995年 | 42篇 |
1994年 | 41篇 |
1993年 | 32篇 |
1992年 | 35篇 |
1991年 | 15篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 6篇 |
1987年 | 3篇 |
1986年 | 9篇 |
1985年 | 28篇 |
1984年 | 35篇 |
1983年 | 12篇 |
1982年 | 15篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 2篇 |
1978年 | 3篇 |
1977年 | 5篇 |
1973年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
Predicting the geo-temporal variations of crime and disorder 总被引:2,自引:0,他引:2
Traditional police boundaries—precincts, patrol districts, etc.—often fail to reflect the true distribution of criminal activity and thus do little to assist in the optimal allocation of police resources. This paper introduces methods for crime incident forecasting by focusing upon geographical areas of concern that transcend traditional policing boundaries. The computerised procedure utilises a geographical crime incidence-scanning algorithm to identify clusters with relatively high levels of crime (hot spots). These clusters provide sufficient data for training artificial neural networks (ANNs) capable of modelling trends within them. The approach to ANN specification and estimation is enhanced by application of a novel and noteworthy approach, the Gamma test (GT). 相似文献
52.
Recent approaches to sustainable development leave much room for policies at a local level. In fact, it is becoming evident that targets such as increasing resource productivity, preserving natural cycles, or extending the present level of welfare, are best pursued within the confines of a local area. In particular, environmental changes are best brought about by considering local systems of firms as cornerstones of cooperative strategies and using data on materials and energy use in physical terms. In this paper, an enterprise input–output model is developed for an industrial district, i.e. a local group of firms specialized in the production of a single final output. The model allows for a detailed quantitative analysis of materials and energy flows and the consequent generation of waste and pollution. As a planning tool, the model may be used to evaluate alternative scenarios, such as the possibility of re- using waste taking account of sustainability requirements. An empirical case study applies the model to an industrial district in Southern Italy producing leather sofas. 相似文献
53.
Yoshiharu Takamura 《Socio》2003,37(2):85-102
As a national project of Japan, plans for the relocation of several government agencies out of Tokyo have been ongoing. This paper is concerned with the problem of site selection for this project. The National Land Agency, the agency responsible for this project, has declared that the process of site selection should be rational, open to the public and easily understandable. In an effort to meet these requirements, we propose a consensus-making method for reaching a group decision, based on a combination of the analytic hierarchy process (AHP) and the Assurance Region model of data envelopment analysis (DEA). Several strategic uses of these methodologies, e.g., Delphi procedures, are also discussed. Based on these analyses, the “Wise Men” Committee for deciding the best site has chosen two from among ten contenders, one from the North-East and the other from the Central part of Japan, as candidates for the best relocation site. We could not discriminate between the two with respect to the multiple criteria chosen for evaluating sites. The Committee recommended the two sites to the Prime Minister at the end of December 1999. The Prime Minister reported this conclusion to the Diet. This topic is currently the focus of political discussions in the Diet. In this report, the authors summarize the decision-making processes that the Wise Men Committee followed, putting emphasis on the methodological aspects. 相似文献
54.
结合对简单网络管理协议(SNMP)的研究,分析了Agent 网管代理开发包,并介绍了利用Agnet 实现IP电话系统中SNMP代理的过程。 相似文献
55.
中国和新加坡产业内贸易与规模经济存在着一种长期的均衡关系,新加坡生产企业的规模经济对产业内贸易的推动作用大于中国,中国和新加坡生产企业的规模经济与产业内贸易存在单向因果关系,即规模经济促进产业内贸易. 相似文献
56.
利用面板数据对中国东、中、西部的进口额和GDP增长关系进行的实证研究。在短期内,GDP增长对进口额影响最小是中部地区,在长期,西部GDP增长对进口额影响最大。中国经济增长对拉动世界经济增长起了十分重要的作用,中国经济增长减速也会影响全球经济。 相似文献
57.
试论我国证券投资基金稳定市场的功能 总被引:1,自引:0,他引:1
本文采用博弈分析方法 ,通过博弈模型 ,对虚假会计信息产生的条件、机制和影响因素等作了探讨。 相似文献
58.
Christopher G. Leggett 《Environmental and Resource Economics》2002,23(3):343-355
This paper considers welfare analysis with therandom utility model (RUM) when perceptions ofenvironmental quality differ from objectivemeasures of environmental quality. Environmental quality is assumed to be anexperience good, so that while perceptions ofquality determine choices, ex postutility is determined by objective quality. Given this assumption, I derive a measure ofthe welfare impact of changes in environmentalquality, and I show how this new welfaremeasure differs from the traditional welfaremeasure developed by Hanemann (1982). This newwelfare measure provides an approach tomeasuring the value of information aboutenvironmental quality within the framework ofthe random utility model. 相似文献
59.
李雪 《吉林省经济管理干部学院学报》2002,16(5):26-28
城市化问题是当代社会经济发展的重大问题,是涉及到自然资源的合理开发利用,农村人口转化、剩余劳动力的走向以及城市工业、第三产业发展的关键问题。 相似文献
60.
“宪政转轨论”评析 总被引:5,自引:0,他引:5
中俄改革的比较研究 ,一直是新兴的转轨经济学关注的热点。1 998年俄罗斯爆发金融和经济危机 ,激进改革的支持者一度趋于沉寂。然而 ,从 1 999年下半年开始 ,俄罗斯经济出现转机 ,2 0 0 0年经济增长居世界第一 ,GDP增幅达 8 3 %。与此同时 ,中国经济改革进入攻坚的中期阶段。在这一关键阶段 ,渐进改革积累的矛盾日趋严峻 ,同时还面临加入WTO市场化改革滞后的外在压力。毫无疑问 ,中国经济仍要进行重大调整和改革。在这一背景下 ,国内外经济学界又在进一步探讨中俄改革的道路和方式问题。本文是对目前讨论的一个著名观点“宪政转轨”论进行分析和批驳。 相似文献