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   12451篇
  免费   304篇
  国内免费   1篇
财政金融   2120篇
工业经济   909篇
计划管理   2170篇
经济学   2687篇
综合类   231篇
运输经济   61篇
旅游经济   161篇
贸易经济   2447篇
农业经济   441篇
经济概况   1297篇
信息产业经济   1篇
邮电经济   231篇
  2021年   90篇
  2020年   162篇
  2019年   196篇
  2018年   340篇
  2017年   363篇
  2016年   343篇
  2015年   238篇
  2014年   325篇
  2013年   1269篇
  2012年   386篇
  2011年   406篇
  2010年   419篇
  2009年   424篇
  2008年   392篇
  2007年   342篇
  2006年   262篇
  2005年   236篇
  2004年   229篇
  2003年   243篇
  2002年   211篇
  2001年   238篇
  2000年   262篇
  1999年   200篇
  1998年   199篇
  1997年   216篇
  1996年   196篇
  1995年   194篇
  1994年   185篇
  1993年   185篇
  1992年   208篇
  1991年   207篇
  1990年   169篇
  1989年   167篇
  1988年   131篇
  1987年   130篇
  1986年   137篇
  1985年   194篇
  1984年   169篇
  1983年   189篇
  1982年   157篇
  1981年   181篇
  1980年   153篇
  1979年   176篇
  1978年   144篇
  1977年   127篇
  1976年   143篇
  1975年   121篇
  1974年   112篇
  1973年   91篇
  1972年   73篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
The Soviet Union will not be represented at the North-South Summit in Cancún, even though both the developing countries and the Western industrialised countries would have liked to see it participate in the talks on solving the problem of underdevelopment. What are the USSR’s reasons for its negative attitude? Are there any prospects of involving the Soviet Union and its CMEA partners in joint development cooperation?  相似文献   
94.
The structural changes in the world economy have made themselves increasingly felt in the Federal Republic of Germany over the past few years. For the first time since 1965 there is again a current account deficit, since merchandise trade is no longer able, due to the worsened terms of trade, to finance the traditional deficits on services and transfers. What policy should the Federal Government follow in order to help German industry adjust to these changes?  相似文献   
95.
This paper estimates technical efficiency (TE) measures using four alternative production frontier models, and evaluates the sensitivity of the results to the choice of methodology. The Cobb-Douglas functional form along with data for 1982 and 1983 from 404 dairy farms located throughout six northeastern states in the US are used in the estimation. A general conclusion is that, broadly speaking, frontier function models are neutrally upwardly scaled versions of the OLS or average model. A second conclusion is that different models yield markedly different efficiency levels across firms. However, the correlation between the indexes from the various methods is high, which implies that the ordinal ranking of firms according to their measured level of technical efficiency appears to be independent of the method used for a given year. By comparison, the correlation between efficiency indexes for the same method across time, although positive, is much lower than the previous set of correlations. Correlation analysis of efficiency versus farm size and of efficiency versus returns over variable costs, based on the alternative models, yielded consistent results.  相似文献   
96.
Recent theoretical and empirical studies suggest that blockholders (shareholders with ownership ≥ 5 percent) exert governance through the threat of exit. Blockholders have strong incentives to gather private information and sell their shares when managers are perceived to underperform. To prevent blockholders from selling their shares and the firm from suffering a stock price decline, managers align their actions with the interests of shareholders. As a result of the greater manager‐shareholder alignment, managers' actions are more likely to be in shareholders' best interest, and consequently there is less need for managers to manipulate earnings. Consistent with these predictions from economic theory, we find evidence that as exit threat increases, firms have higher financial reporting quality. Theory also predicts that the impact of blockholders' exit threat on financial reporting quality (FRQ) should increase as the manager's wealth is tied more closely to the stock price, and this is what we find. Our study contributes to the research on the impact of shareholders on FRQ and to an emerging literature on the impact of blockholders in financial markets. Blockholders play an important role in managers' reporting outcomes through their actions as informed investors.  相似文献   
97.
This article presents a medium-term forecast of the development of the Russian nanoindustry, taking into account the assumed transition of the industry from the formation stage to the investment growth stage. Problems associated with the estimated output volumes of products in the Russian nanoindustry are considered, since the trends recorded in the primary statistical data are very far from reflecting the real situation due to the imperfection of the system of statistics of nano-containing products, as well as a reduction of state funding and a decline in the intensity of research in the industry. It is concluded that a full-fledged industry has not been yet completely formed in Russia and it actually exists only as a statistical phenomenon; in addition, the project really set different objectives from the declared creation of a breakthrough high-technology branch.  相似文献   
98.
The article presents the results of a comparative analysis of mortality trends in two Russian capitals and two cities with population over one million, Krasnoyarsk and Rostov-on-Don, in comparison with foreign megacities (Berlin, Hong Kong, London, Los Angeles, New York, Paris, Singapore, Tokyo). From 1990 to 2015, in the Russian “model cities” the standardized mortality rates (SMR) for all causes on average decreased by almost a third: most in Moscow (44% for men and 42% for women) and less for Krasnoyarsk (22% for both men and women). An assessment of the statistical reliability of the decrease in SMR on the basis of long time series showed the absence of a positive dynamic of mortality from diseases of the digestive organs, mainly cirrhosis, which confirms the presence of the alcoholic component. Despite the sufficiently steady decline in mortality in the early 2000s, its level in Russian cities continues to significantly exceed the mortality rate in foreign megacities.  相似文献   
99.
Host Country Competition, Labor Skills, and Technology Transfer by Multinationals. — This paper examines the impact of local competition and the availability of skilled labor on the technology imports of foreign MNC affiliates in Mexican manufacturing industries. The authors find that proxies for local competition and labor skills are positively related to the recorded technology imports of foreign owned affiliates. The effects of competition appear to be particularly strong in intermediate and consumer goods industries, while the availability of skilled labor seems to be particularly important in durable and capital goods industries. Thus, government policies aiming to create a competitive climate and improve labor quality may also promote inflows of modern technology.  相似文献   
100.
Ekzeme – eine h?ufig untersch?tzte Gefahr - Untersuchungen zeigen, dass die Lebensqualit?t durch berufsbedingte Hauterkrankungen genauso eingeschr?nkt wird wie durch einen Myokardinfarkt oder Schlaganfall. Das ist für Pflegende deshalb so bedeutsam, weil gerade in Pflegeberufen Kontakt zu potenziell Allergie ausl?senden Stoffen besteht.  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