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   135999篇
  免费   3858篇
  国内免费   14篇
财政金融   25526篇
工业经济   11552篇
计划管理   21694篇
经济学   29263篇
综合类   1538篇
运输经济   969篇
旅游经济   2501篇
贸易经济   23508篇
农业经济   6186篇
经济概况   16876篇
信息产业经济   7篇
邮电经济   251篇
  2021年   842篇
  2020年   1620篇
  2019年   2378篇
  2018年   2301篇
  2017年   2512篇
  2016年   2694篇
  2015年   2101篇
  2014年   3418篇
  2013年   15293篇
  2012年   4193篇
  2011年   4134篇
  2010年   3714篇
  2009年   4311篇
  2008年   3930篇
  2007年   3263篇
  2006年   3597篇
  2005年   3596篇
  2004年   3127篇
  2003年   2895篇
  2002年   2858篇
  2001年   2634篇
  2000年   2545篇
  1999年   2436篇
  1998年   2310篇
  1997年   2349篇
  1996年   2194篇
  1995年   2000篇
  1994年   2007篇
  1993年   1975篇
  1992年   2034篇
  1991年   1940篇
  1990年   1826篇
  1989年   1678篇
  1988年   1606篇
  1987年   1608篇
  1986年   1693篇
  1985年   2478篇
  1984年   2345篇
  1983年   2153篇
  1982年   2004篇
  1981年   1939篇
  1980年   1902篇
  1979年   1845篇
  1978年   1629篇
  1977年   1618篇
  1976年   1384篇
  1975年   1274篇
  1974年   1187篇
  1973年   1186篇
  1972年   895篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
241.
Deciding on advertising appropriations is a common problem to all National Tourist Offices. The Austrian National Tourist Office now employs a decision support model allowing for inclusion of managerial judgments. In tourism, like elsewhere, application of standard optimization routines to marketing decision making is straight- forward, once the relationship linking market response to input has been modeled adequately. A tailor-made decision calculus procedure eliciting managerial judgments on the relative importance of the factors determining a receiving country's travel market share provides the weights otherwise inaccessible by objective parameter estimation. A tourism manager thus can evaluate countries as tourism generators and allocate an advertising budget accordingly.  相似文献   
242.
This paper examines the variables that determine the performance of countries at the Olympic Games as measured by a weighted sum of the medals won at the Sydney 2000 Games. While previous studies have identified the importance of a country's economic size and the resources available to sport, this paper examines nine more variables including the number of athletes representing each nation and some development indicators. Based on 2310 regressions, both traditional and restricted extreme bounds analysis show that only two variables are robust: the number of athletes and national expenditure on health. Thus, the final model recognises four explanatory variables that include these two as well as GDP and population.  相似文献   
243.
244.
We propose a new model to estimate the term structure of interest rates using observed on‐the‐run Treasury yields. The new model is an improvement over models that require a priori knowledge of the shape of the yield curve to estimate the term structure. The general form of the model is an exponential function that depends on the estimation of four parameters fit by nonlinear least squares and has straightforward interpretations. In comparing the proposed model with current yield‐curve‐smoothing models, we find that, for the data used, the proposed model does best overall in terms of pricing accuracy both in sample and out of sample. JEL classification: E43, G12  相似文献   
245.
This study examines whether the uncertainty arising from a firm's exposure to future environmental costs (environmental uncertainty) affects the market's price sensitivity to reported earnings. Specifically, when environmental uncertainty is significantly high, are investors more responsive to reported earnings released by 'high-polluting' firms than reported earnings announced by 'low-polluting' firms within the same industry? The initial impact of Title IV (the acid rain provisions) of the 1990 Clean Air Act Amendments (1990 CAAA) on the US electric utility industry provides the research setting required to isolate the effects of environmental uncertainty while addressing this question. Consistent with theoretical predictions, we find that the earnings response coefficients (ERCs) of high-polluting electric utilities are significantly greater than those of their low-polluting counterparts during a predicted period of elevated environmental uncertainty. In adjoining sample years associated with lower environmental uncertainty, we observe no statistical difference in the magnitude of the ERCs between these two groups. In addition, the study's findings suggest that the magnitude of the ERC is increasing in the firm's exposure to future environmental costs, after controlling for other factors that potentially affect ERCs.  相似文献   
246.
尽管偶尔有些失望与不信任的言论出现,经济生活的全球化现在仍然成为了必然之势。在过去的几十年中,恐怕再也没有其他场所比全球金融市场更能体现这种日渐普遍的趋势。资本流动的倍增给发达国家和发展中国家都创造了无数新的盈利机会,同时,也给这些国家的政策制定者带来了艰巨的挑战,一切还都尘埃未定。  相似文献   
247.
This paper uses evidence from late nineteenth-and early twentieth-century personnel records of two Australian banks to examine the nature of internal labour markets prior to the Second World War. It is argued that the industry possessed all the classic features of internal labour markets: limited ports of entry, internal promotion, long careers, and assignment of wages by well-defined rules. The paper then examines the reasons why banks adopted internal labour markets. Finally, the paper examines the recent decline of internal labour markets and examines the role of technological and social changes in this decline.  相似文献   
248.
This paper investigates the price adjustment and lead-lag relations between returns on five size-based portfolios in the Taiwan stock market. It finds evidence that the price adjustment of small-stock portfolios is not slower than that of large-stock portfolios. Additionally, limited evidence supports a positive leading role of large-stock portfolio returns over small-stock portfolio returns. These two findings are substantially different from the results of previous research on developed markets.  相似文献   
249.
This paper explores the methodology of sectoral productivity growth measurement within the framework of input-output analysis. A method which ensures that sectoral productivity growth rates are consistent with productivity growth rates for the economy as a whole (as well as allowing for external trade) is suggested. New estimates are presented on total factor productivity in UK agriculture using a Tornqvist index procedure. In addition, new estimates of agricultural labour productivity growth are presented, taking account not only of labour employed in agriculture but also of labour employed in ancillary industries on the supply side. The empirical results confirm that part of the labour previously employed on farms has shifted “upstream” to industries providing agriculture with fertilises, machinery and other inputs.  相似文献   
250.
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