全文获取类型
收费全文 | 104903篇 |
免费 | 2779篇 |
国内免费 | 1634篇 |
专业分类
财政金融 | 8145篇 |
工业经济 | 4956篇 |
计划管理 | 23991篇 |
经济学 | 17675篇 |
综合类 | 17955篇 |
运输经济 | 736篇 |
旅游经济 | 1739篇 |
贸易经济 | 13385篇 |
农业经济 | 7284篇 |
经济概况 | 13448篇 |
信息产业经济 | 2篇 |
出版年
2024年 | 329篇 |
2023年 | 1189篇 |
2022年 | 1632篇 |
2021年 | 2549篇 |
2020年 | 3072篇 |
2019年 | 1899篇 |
2018年 | 1691篇 |
2017年 | 1920篇 |
2016年 | 2203篇 |
2015年 | 2756篇 |
2014年 | 6846篇 |
2013年 | 7714篇 |
2012年 | 8669篇 |
2011年 | 10969篇 |
2010年 | 8202篇 |
2009年 | 6976篇 |
2008年 | 7526篇 |
2007年 | 6822篇 |
2006年 | 6591篇 |
2005年 | 4953篇 |
2004年 | 3533篇 |
2003年 | 2901篇 |
2002年 | 2007篇 |
2001年 | 1834篇 |
2000年 | 1228篇 |
1999年 | 667篇 |
1998年 | 336篇 |
1997年 | 316篇 |
1996年 | 255篇 |
1995年 | 167篇 |
1994年 | 128篇 |
1993年 | 127篇 |
1992年 | 99篇 |
1991年 | 76篇 |
1990年 | 62篇 |
1989年 | 42篇 |
1988年 | 37篇 |
1987年 | 16篇 |
1986年 | 15篇 |
1985年 | 187篇 |
1984年 | 220篇 |
1983年 | 179篇 |
1982年 | 128篇 |
1981年 | 62篇 |
1980年 | 76篇 |
1979年 | 47篇 |
1978年 | 37篇 |
1977年 | 23篇 |
1975年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
141.
讨论了全低变工艺开发过程中遇到的一些问题和对策,对中、小氮肥企业进行技术改造具有一定的参考意义。 相似文献
142.
论科研选题应注意的几个问题 总被引:5,自引:0,他引:5
科研选题要善于把握选题的原别和导向,注意课题的研究动态,把握课题的研究范围,发挥出科研人员的优势,设计出切实可行的研究路线。 相似文献
143.
我国武器装备通用ATS(自动测试系统)经历了从引进、仿制到自行研制的过程,但是目前通用ATS总的局面是通用ATS不通用,这种局面主要是由于国内对通用ATS实现技术缺乏统一认识造成的。基于此,本文研究了与开发通用ATS密切相关的标准/规范、硬件配置技术、接口技术、集成测试软件开发环境技术。本文的研究结果适用于所有开发通用ATS的项目。 相似文献
144.
计算机软件的可专利性探析 总被引:3,自引:0,他引:3
如何对计算机软件提供充分而不过度的保护,这是各国立法选择和司法保护上的一个难题,也是一个国际性的问题。通过对计算机软件可专利性理论和实践的分析,可知计算机软件兼有专利权和著作权客体双重属性,并且软件专利保护优于著作权保护。本文从西方国家特别是美国对计算机软件法律保护的发展进程及其不同阶段的分析,提出了我国计算机软件专利保护的对策。 相似文献
145.
Recent advances in the theory of credit risk allow the use of standard term structure machinery for default risk modeling and estimation. The empirical literature in this area often interprets the drift adjustments of the default intensity's diffusion state variables as the only default risk premium. We show that this interpretation implies a restriction on the form of possible default risk premia, which can be justified through exact and approximate notions of "diversifiable default risk." The equivalence between the empirical and martingale default intensities that follows from diversifiable default risk greatly facilitates the pricing and management of credit risk. We emphasize that this is not an equivalence in distribution, and illustrate its importance using credit spread dynamics estimated in Duffee (1999) . We also argue that the assumption of diversifiability is implicitly used in certain existing models of mortgage-backed securities. 相似文献
146.
In the presented text the authors judge the importance of statistics in the monetary policy of the Czech National Bank (CNB) over the course of the economic transformation process, with particular consideration of changing statistical needs and the possibilities and limits of statistical data exploitation in the monetary analyses. The importance of statistics lies on the level of collection and processing of statistical information and on the level of use of statistical methods to analyse data. Since the start of the 1990s the requirements for statistics were significantly influenced by monetary policy. In the period 1990–1997, monetary targeting was the primary influential factor. Since 1998, the monetary policy is influenced by inflation targeting. Statistical priorities switched from monetary data to economy and financial market data. Much progress has been made in the use of statistical methods for analysing data. Statistics available at present cover the CNB's standard monetary-policy requirements and are on par with those in developed countries. Its further development will reflect the standard changes taking place in the more advanced countries. 相似文献
147.
This paper presents a multilateral comparison of relative levels and structures of costs of production in Japan, the US and West Germany. The analysis is carried out by using harmonized input–output tables, which are converted at US prices by using adjusted sectoral purchasing power parities. A new accounting methodology is derived from recent developments of index number theory, whereas the chosen multilateral comparison procedure gives results that are invariant with respect to the order of the pairs of countries examined. 相似文献
148.
The importance of evaluating a discipline system from an ethical perspective is considered. Disciplinary practices in contemporary organizations are frequently characterized by managers having to choose from among alternative courses of corrective action. Since the selected alternative may have serious consequences for the individuals involved, its rightness or wrongness is of concern. The pattern of these choices reflects the overall disciplinary practice of the organization, and is an issue that warrants attention from an ethical perspective. Basic schools of thought that influence contemporary discipline practices are discussed and suggestions are made for conducting an evaluation of the ethical nature of a discipline system. 相似文献
149.
150.
Many employers are extending workplace rights by allowing for more employee voice in decision making. Numerous unionized organizations have established formal worker participation processes to help achieve this end and to improve organizational performance. Based largely on theory, such processes are normally designed to operate independently from the bargaining process. The purpose of this study was to examine the relationship between participation and bargaining processes, and the effect of this relationship on workplace satisfaction. A total of 712 Midwest union officials were surveyed, and the results indicate that the processes tend to become integrated in the workplace. Further, union officials' workplace satisfaction was greater where formal worker participation is institutionalized within the bargaining process. 相似文献