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   13020篇
  免费   300篇
  国内免费   1篇
财政金融   2467篇
工业经济   1114篇
计划管理   2137篇
经济学   2849篇
综合类   181篇
运输经济   93篇
旅游经济   187篇
贸易经济   2162篇
农业经济   660篇
经济概况   1464篇
信息产业经济   1篇
邮电经济   6篇
  2021年   72篇
  2020年   139篇
  2019年   178篇
  2018年   208篇
  2017年   229篇
  2016年   227篇
  2015年   159篇
  2014年   242篇
  2013年   1226篇
  2012年   366篇
  2011年   418篇
  2010年   356篇
  2009年   425篇
  2008年   329篇
  2007年   388篇
  2006年   322篇
  2005年   252篇
  2004年   272篇
  2003年   242篇
  2002年   278篇
  2001年   239篇
  2000年   270篇
  1999年   223篇
  1998年   239篇
  1997年   241篇
  1996年   237篇
  1995年   205篇
  1994年   221篇
  1993年   217篇
  1992年   258篇
  1991年   236篇
  1990年   196篇
  1989年   171篇
  1988年   160篇
  1987年   200篇
  1986年   194篇
  1985年   270篇
  1984年   286篇
  1983年   272篇
  1982年   232篇
  1981年   234篇
  1980年   227篇
  1979年   235篇
  1978年   149篇
  1977年   141篇
  1976年   102篇
  1975年   130篇
  1974年   93篇
  1973年   93篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
One hospital integrates employee relations, customer service and commitment to quality into one successful, award-winning program. Employees at AMI Palmetto General are motivated to constantly consider the hospital's goals and strive for excellence.  相似文献   
62.
Discriminating Among Alternative Theories of the Multinational Enterprise   总被引:6,自引:0,他引:6  
Recent theoretical developments have incorporated endogenous multinational firms into the general–equilibrium model of trade. One simple taxonomy separates the theory into "vertical" models, in which firms geographically separate activities by stages of production, and "horizontal" models, in which multiplant firms duplicate roughly the same activities in many countries. The authors nest a horizontal and a vertical model within a hybrid (unrestricted) "knowledge–capital model" and estimate the specifications with data on US foreign direct investment activity. In the nested econometric tests, the data sample cannot distinguish statistically between the unrestricted model and the restricted horizontal model, indicating that the latter captures virtually all of the determinants of FDI. The tests overwhelmingly reject the vertical model.  相似文献   
63.
A Stochastic Frontier Production Function with Flexible Risk Properties   总被引:1,自引:1,他引:1  
This paper considers a stochastic frontier production function which has additive, heteroscedastic error structure. The model allows for negative or positive marginal production risks of inputs, as originally proposed by Just and Pope (1978). The technical efficiencies of individual firms in the sample are a function of the levels of the input variables in the stochastic frontier, in addition to the technical inefficiency effects. These are two features of the model which are not exhibited by the commonly used stochastic frontiers with multiplicative error structures.An empirical application is presented using cross-sectional data on Ethiopian peasant farmers. The null hypothesis of no technical inefficiencies of production among these farmers is accepted. Further, the flexible risk models do not fit the data on peasant farmers as well as the traditional stochastic frontier model with multiplicative error structure.  相似文献   
64.
The significance of learning to productivity growth is formulated within a dynamic adjustment-cost framework. Explicitly treating the acquisition of knowledge as a firm-specific capital good entering the production function along with other conventional inputs, the dynamic optimization model integrates the learning-by-doing hypothesis with technical change, scale, and disequilibrium input use effects in the aggregate productivity analysis. The theoretical framework is applied to examining the dynamic components accounting for the growth of U.S. production agriculture over the 1950–82 period. The results imply a less important role for technical change and assign a substantial role to the previously unmeasured contribution of learning-by-doing to the growth of aggregate agriculture industry.The editor for this paper was Melvyn Fuss.  相似文献   
65.
Simulated annealing: An introduction   总被引:1,自引:0,他引:1  
  相似文献   
66.
The generality/specificity issue in consumer innovativeness research   总被引:2,自引:0,他引:2  
The purpose of the present study was to explore the role of personality in shaping consumer innovativeness by testing a model of the hierarchical relationships between a global (broad or abstract) personality trait, its domain-specific manifestation in a consumer context, and overt consumer behavior. A survey of 465 adult consumers measured global innovativeness, domain-specific innovativeness for two product categories (clothing and electronics) and self-reported purchase of new clothing and electronic items. Three hypotheses were tested. First, global innovativeness is more highly correlated with domain-specific innovativeness than it is with the purchase of new items. Second, domain-specific innovativeness is more highly correlated with the purchase of new items than is global innovativeness. Finally, the association between global innovativeness and new product purchase is mediated by domain-specific innovativeness. All three hypotheses were supported for both product categories.  相似文献   
67.
68.
The effects of group problem-solving method and problem-situation complexity on attempts at implementing group solutions were investigated in a laboratory-field setting. Group members were supervisory nurses from various organizations, who were randomly assigned to three groups in a balanced research design which included three group decision-making processes and three levels of problem-situation complexity in implementation. The dependent variable was the number of attempts at implementing group-derived solutions in home organizations. The results showed that structure in group decision-making processes led to increased rates of implementation attempts at all levels of problem-situation complexity. There was a significant complexity-by-process interaction effect among the decision-making processes, which supports the conclusion that the type of group decision-making process and the problem-situation complexity should be considered in order to optimize the number of implementation attempts.g  相似文献   
69.
Collaborating researchers used a multi equation model to analyze 3080 mother-infant pairs living on the island of Cebu in the central Philippines and to estimate a child health production function. The econometric methods used eliminated obstacles such as heterogeneity and endogeneity of significant explanatory factors. They also maximized the longitudinal quality of the data. The results showed that morbidity in 1 period reduced infant weight in following periods. For example, diarrhea and febrile respiratory infection reduced growth in the time period following the illnesses. Further effects of some contributing factors were great near birth not diminished with age. For example, breast feeding promoted growth and protected against infection, especially diarrhea and febrile respiratory infection, more substantially near birth than it did later. Further, in urban areas, preventive health care positively affected growth independently of its indirect influence on reducing respiratory infection. Yet it had little effect on diarrhea. Diarrhea had a strong adverse effect on growth. Exposure of the infant to enteric pathogens had the greatest influence on production of diarrhea. In urban areas, exposure included water supply contamination, exposure to feces, a more pathogenic diet, and community crowding. In rural areas, however, exposure included community crowding and increased rainfall which presumably washed feces into the water supply. Household crowding in both urban and rural areas and irritation from smoke in urban areas only tended to bring about febrile respiratory infection.  相似文献   
70.
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