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   42704篇
  免费   1238篇
  国内免费   1篇
财政金融   7951篇
工业经济   3483篇
计划管理   7373篇
经济学   9666篇
综合类   455篇
运输经济   360篇
旅游经济   696篇
贸易经济   7132篇
农业经济   2189篇
经济概况   4551篇
信息产业经济   4篇
邮电经济   83篇
  2023年   213篇
  2021年   289篇
  2020年   549篇
  2019年   824篇
  2018年   898篇
  2017年   943篇
  2016年   915篇
  2015年   663篇
  2014年   1015篇
  2013年   4506篇
  2012年   1363篇
  2011年   1506篇
  2010年   1282篇
  2009年   1503篇
  2008年   1361篇
  2007年   1278篇
  2006年   1195篇
  2005年   1008篇
  2004年   940篇
  2003年   961篇
  2002年   916篇
  2001年   930篇
  2000年   900篇
  1999年   789篇
  1998年   853篇
  1997年   810篇
  1996年   761篇
  1995年   690篇
  1994年   690篇
  1993年   656篇
  1992年   706篇
  1991年   688篇
  1990年   609篇
  1989年   494篇
  1988年   477篇
  1987年   529篇
  1986年   490篇
  1985年   694篇
  1984年   741篇
  1983年   686篇
  1982年   597篇
  1981年   569篇
  1980年   569篇
  1979年   560篇
  1978年   413篇
  1977年   357篇
  1976年   333篇
  1975年   309篇
  1974年   277篇
  1973年   271篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
回顾1.需求7月份,世界主要经济体跌幅趋缓,显现经济复苏迹象。中国经济更是率先走出低迷,增长提速,第二季度国内生产总值同比增长7.9%。基础设施投资起到了决定性的作用。7月份固定资产投资延续上半年的趋  相似文献   
84.
If actively managed mutual funds suffer from diminishing returns to scale, funds should alter investment behavior as assets under management increase. Although asset growth has little effect on the behavior of the typical fund, we find that large funds and small‐cap funds diversify their portfolios in response to growth. Greater diversification, especially for small‐cap funds, is associated with better performance. Fund family growth is related to the introduction of new funds that hold different stocks from their existing siblings. Funds with many siblings diversify less rapidly as they grow, suggesting that the fund family may influence a fund's portfolio strategy.  相似文献   
85.
This paper examines the effect of memory loss on the continuity of behavior. We consider a player (individual or firm) who remembers previous actions but not underlying rationales. In a stable environment, relative to a full-recall scenario, memory loss increases the probability of following old policies (inertia). In a volatile environment, memory loss can decrease this probability (impulsiveness). The model provides a memory-loss explanation for some documented psychological biases, implies that inertia and organizational routines should be more important in stable environments than in volatile ones, and provides empirical implications relating memory and environmental variables to economic decisions.  相似文献   
86.
87.
This article investigates the determinants of real estate investment trusts (REIT) portfolio investment and institutional REIT ownership using multivariate Tobit regressions. We contend that many institutional investors take larger positions in more liquid assets like REIT stocks, as compared with private real estate equities, because of liquidity considerations. Consistent with this contention, we find that liquidity constraints are significantly related to REIT portfolio investment by institutional investors. We also find that institutional investors have different preferences for REIT stocks than do other investors; they generally prefer larger, more liquid REIT stocks.  相似文献   
88.
We study all–pay auctions with variable rewards under incomplete information. In standard models, a reward depends on a bidder's privately known type; however, in our model it is also a function of his bid. We show that in such models there is a potential for paradoxical behavior where a reduction in the rewards or an increase in costs may increase the expected sum of bids or alternatively the expected highest bid.  相似文献   
89.
A survey conducted in Mississippi, Texas, Indiana, and Nebraska elicited producers' preferences for various farm policy changes. This permitted examination of the diversity of preferences that single-state studies have not allowed. Five policy choices, including deficiency payments, loan programs, crop insurance, export programs, and disaster payments were examined. Logit model results predicting producer preferences for each of the five dichotomous policy choices are reported. Explanatory variables based on expected utility theory such as risk aversion, price and yield variability, and price–yield correlation are significant in various models.  相似文献   
90.
This paper focuses on the development of a theoretical scheme describing the transformation of primary incomes into end consumption and savings in the Russian economy. This scheme is basically a system of interrelated tables reflecting the distribution of primary incomes across the institutional sectors and their further reallocation and use. The scheme makes allowances for the specific features of the Russian economy and existing statistics. In terms of methodology, it is coordinated with the interindustry balance in current buyer prices and, from the theoretical standpoint, describes the connection between Quadrant II and Quadrant III of the balance. Therefore, the proposed system of tables is treated in the paper as Quadrant IV of the interindustry balance. The theoretical scheme is used by the authors as a necessary basis for constructing an empirical model of the relationship between value added and end product, which will be published in the next issue of this journal.  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