首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   33695篇
  免费   1265篇
  国内免费   702篇
财政金融   2730篇
工业经济   1498篇
计划管理   5986篇
经济学   7846篇
综合类   4785篇
运输经济   413篇
旅游经济   632篇
贸易经济   4251篇
农业经济   2757篇
经济概况   4763篇
信息产业经济   1篇
  2024年   146篇
  2023年   606篇
  2022年   609篇
  2021年   914篇
  2020年   1165篇
  2019年   901篇
  2018年   804篇
  2017年   1072篇
  2016年   1090篇
  2015年   1111篇
  2014年   2163篇
  2013年   3018篇
  2012年   2777篇
  2011年   3245篇
  2010年   2461篇
  2009年   2241篇
  2008年   2357篇
  2007年   2109篇
  2006年   1826篇
  2005年   1461篇
  2004年   987篇
  2003年   705篇
  2002年   463篇
  2001年   379篇
  2000年   275篇
  1999年   184篇
  1998年   128篇
  1997年   98篇
  1996年   73篇
  1995年   50篇
  1994年   48篇
  1993年   29篇
  1992年   39篇
  1991年   16篇
  1990年   6篇
  1989年   9篇
  1988年   7篇
  1987年   6篇
  1986年   11篇
  1985年   25篇
  1984年   19篇
  1983年   10篇
  1982年   9篇
  1981年   6篇
  1980年   3篇
  1978年   1篇
排序方式: 共有10000条查询结果,搜索用时 437 毫秒
101.
以油藏监测工作中的油藏压力监测为例,介绍了标准化工作在压力资料录取及解释分析中的作用。并用实例说明了标准化作业在油田开发方案的制定及油藏压力监测中的应用。  相似文献   
102.
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   
103.
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   
104.
Repeated measurements often are analyzed by multivariate analysis of variance (MANOVA). An alternative approach is provided by multilevel analysis, also called the hierarchical linear model (HLM), which makes use of random coefficient models. This paper is a tutorial which indicates that the HLM can be specified in many different ways, corresponding to different sets of assumptions about the covariance matrix of the repeated measurements. The possible assumptions range from the very restrictive compound symmetry model to the unrestricted multivariate model. Thus, the HLM can be used to steer a useful middle road between the two traditional methods for analyzing repeated measurements. Another important advantage of the multilevel approach to analyzing repeated measures is the fact that it can be easily used also if the data are incomplete. Thus it provides a way to achieve a fully multivariate analysis of repeated measures with incomplete data. This revised version was published online in June 2006 with corrections to the Cover Date.  相似文献   
105.
经济全球化新论   总被引:2,自引:0,他引:2  
经济全球化是以各国对外经济关系发展为基础的生产力和生产关系的全球性发展,它既是当前国际经济和国际经济关系的综合体现,又是经济国际化和经济一体化的新特点、新阶段。经济全球化作为世界经济发展的大趋势,既能促进世界经济的更大发展,又能实现各国经济的共同发展。参入经济全球化并不是我国的目的,而是实现我国经济全球化的手段。我国只有实现了经济全球化,才能最大限度地促进经济发展,并为世界经济全球化做出应有的贡献。  相似文献   
106.
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   
107.
张红波 《物流科技》2003,26(6):62-64
为了适应全球经济一体化的新形势,使财务管理满足国际化的要求,文章提出了虚拟财务管理概念,阐述了虚拟财务管理的特点及其与传统财务管理的区别,论述了虚拟财务管理的基本内容,分析了实现虚拟财务管理存在的障碍和困难并提出了改进建议。  相似文献   
108.
Transforming a traditional agricultural economy into a modern economy is one of the main themes in economic development. Through theoretical and empirical analysis, this paper finds out that the key to transformation is to raise the economic value of people, to improve human capital investment and to match the stocks of physical and human capital. China’s rural economy is on the edge of economic take-off, and different zones may pursue different paths for transformation. The source of rural poverty is not the scarcity of income or consumption, but the deficiency of education, social security, medical care and economic opportunity, which we define as “capability poverty”. __________ Translated from The Journal of World Economy (世界经济), 2005,(2) (in Chinese)  相似文献   
109.
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   
110.
转型与经济信息生产方式的演化创新   总被引:1,自引:0,他引:1  
一定制度下的经济信息生产方式是决定其资源配置效率的重要基础。从制度或资源配置方式的转型角度,分析了经济信息生产方式与一定制度下资源配置的效率关系;指出与传统自由市场经济相对应的现行的会计、统计理论方法及其制度属于经济信息个体性生产方式,不适应以混合经济为特征的现代市场经济对经济信息的需求;最后以现代市场经济的混合经济特征为基点,从市场经济活动的广泛联系性、经济信息的公共物品性和满足社会需求出发,提出了建立经济信息社会化生产方式与制度模式的构想。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号