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   1607篇
  免费   86篇
财政金融   310篇
工业经济   165篇
计划管理   322篇
经济学   230篇
综合类   17篇
运输经济   58篇
旅游经济   61篇
贸易经济   311篇
农业经济   116篇
经济概况   100篇
信息产业经济   1篇
邮电经济   2篇
  2023年   10篇
  2021年   14篇
  2020年   32篇
  2019年   50篇
  2018年   52篇
  2017年   59篇
  2016年   44篇
  2015年   32篇
  2014年   55篇
  2013年   186篇
  2012年   66篇
  2011年   65篇
  2010年   60篇
  2009年   50篇
  2008年   55篇
  2007年   43篇
  2006年   48篇
  2005年   47篇
  2004年   50篇
  2003年   46篇
  2002年   41篇
  2001年   44篇
  2000年   36篇
  1999年   43篇
  1998年   29篇
  1997年   28篇
  1996年   33篇
  1995年   21篇
  1994年   24篇
  1993年   28篇
  1992年   19篇
  1991年   17篇
  1990年   18篇
  1989年   22篇
  1988年   15篇
  1987年   20篇
  1986年   13篇
  1985年   23篇
  1984年   19篇
  1983年   19篇
  1982年   14篇
  1981年   13篇
  1980年   11篇
  1979年   7篇
  1978年   8篇
  1977年   10篇
  1976年   10篇
  1974年   7篇
  1973年   10篇
  1971年   6篇
排序方式: 共有1693条查询结果,搜索用时 265 毫秒
991.
992.
993.
Evidence from antebellum Southern rental and sharecrop leases is presented that shows that tenancy was not new to the postbellum South, but had been carried on during the 40 years preceding the Civil War. This evidence shows that antebellum tenancy, like postbellum tenancy, was governed by written contracts that detailed the rights and obligations of tenant and landlord alike. Landlords closely negotiated and continuously administered these contracts. This evidence further discredits the traditional judgment of tenancy, and especially of sharecropping, as inherently inefficient. It sheds little light, however, on why one tenure was chosen over another.  相似文献   
994.
Consumers' demand for money to hold is shown rigorously to be related to possible but uncertain purchase opportunities rather than to total consumption (income) or to the variability of bond yields. A formal model of consumers' demand for precautionary balances is analyzed. It implies that cash balances demanded will be changed by different amounts in response to equivalent changes in the rates of time preference and inflation. This perhaps explains recent instability in money demand estimates.  相似文献   
995.
This study examined the effect of visual and psycholinguistic elements (such as picture size and the number of adjectives in the headline) on industrial advertisement readership. Multiple regression techniques were used to analyze the data, which were obtained from AD-CHART. AD-CHART is a research firm which specializes in the measurement of industrial ad readership. The analyses showed that visual and psycholinguistic elements are better predictors of industrial advertising readership than more complicated models.  相似文献   
996.
The ITU Plenipotentiary Conference held in Nairobi in the Fall of 1982 was a significant international instrument for the conduct of telecommunication foreign policy. Growing demand for telecommunication services and products coupled with the economic and sociocultural impact of new technologies have resulted in greater global interest in the problems, issues and technical complexities of maintaining order in global telecommunication. A major theme of this article is that ITU deliberations and decisions are all part of the growing telecommunication foreign policy agenda and that the benefits of successful diplomancy are usually worth the costs of effective and coordinated domestic and international policy development.  相似文献   
997.
A study was conducted to measure the relative contribution of perceptions of procedural justice toward predicting organizational citizenship behavior (OCB) controlling for the effects of job satisfaction and organizational commitment. Employees in a national cable television company completed a survey containing measures of work satisfaction, affective and continuance commitment, and perceptions of fairness, while their managers completed an OCB survey. Results using LISREL 7 indicated support fpr relationships between procedural justice and commitment, satisfaction, and OCB. However, no individual relationships between commitment and OCB nor between satisfaction and OCB were found once the relationships between justice and citizenship were controlled. These findings are discussed using the group value model of procedural justice.  相似文献   
998.
Future changes in population size, composition, and spatial distribution are key factors in the analysis of climate change, and their future evolution is highly uncertain. In climate change analyses, population uncertainty has traditionally been accounted for by using alternative scenarios spanning a range of outcomes. This paper illustrates how conditional probabilistic projections offer a means of combining probabilistic approaches with the scenario-based approach typically employed in the development of greenhouse gas emissions projections. The illustration combines a set of emissions scenarios developed by the Intergovernmental Panel on Climate Change (IPCC) with existing probabilistic population projections from IIASA. Results demonstrate that conditional probabilistic projections have the potential to account more fully for uncertainty in emissions within conditional storylines about future development patterns, to provide a context for judging the consistency of individual scenarios with a given storyline, and to provide insight into relative likelihoods across storylines, at least from a demographic perspective. They may also serve as a step toward more comprehensive quantification of uncertainty in emissions projections.  相似文献   
999.
An important concern of regulatory agencies is the quality and variety of products offered for sale. This paper considers the effects of introducing quality standards in a monopolized market where the monopoly sells a range of qualities of a product to consumers with varying taste for quality. The introduction of a minimum acceptable quality can alter the entire price and quality schedule offered by the monopolist. Both a uniform and a more general distribution of consumers are studied to examine these changes and their implications for general welfare.  相似文献   
1000.
With increased numbers of veterinarians in the market, it is critical to understand how this increased competition affects income potential at multiple levels. This study presents an empirical approach that incorporates local and nonlocalised spatial competition of firms into one model. By analysing the market for veterinarians using a spatial weight matrix approach, we are able to quantify localized and nonlocalised competition which assists in defining relevant market areas for veterinarians. Specifically, increased density within their county and surrounding counties decreases veterinarian income. Thus, the potential market area for veterinarians is larger than the local/county market in which they practice. This is important for veterinarians when choosing a location to practice, as they must consider the competition and demand in local and non-local areas.  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