全文获取类型
收费全文 | 23186篇 |
免费 | 589篇 |
国内免费 | 13篇 |
专业分类
财政金融 | 4366篇 |
工业经济 | 1990篇 |
计划管理 | 3932篇 |
经济学 | 4921篇 |
综合类 | 377篇 |
运输经济 | 203篇 |
旅游经济 | 464篇 |
贸易经济 | 4038篇 |
农业经济 | 1260篇 |
经济概况 | 2211篇 |
邮电经济 | 26篇 |
出版年
2023年 | 100篇 |
2021年 | 164篇 |
2020年 | 304篇 |
2019年 | 438篇 |
2018年 | 513篇 |
2017年 | 558篇 |
2016年 | 519篇 |
2015年 | 381篇 |
2014年 | 579篇 |
2013年 | 2439篇 |
2012年 | 664篇 |
2011年 | 726篇 |
2010年 | 675篇 |
2009年 | 783篇 |
2008年 | 825篇 |
2007年 | 738篇 |
2006年 | 677篇 |
2005年 | 621篇 |
2004年 | 564篇 |
2003年 | 589篇 |
2002年 | 545篇 |
2001年 | 493篇 |
2000年 | 497篇 |
1999年 | 450篇 |
1998年 | 442篇 |
1997年 | 461篇 |
1996年 | 416篇 |
1995年 | 394篇 |
1994年 | 377篇 |
1993年 | 383篇 |
1992年 | 363篇 |
1991年 | 345篇 |
1990年 | 319篇 |
1989年 | 280篇 |
1988年 | 231篇 |
1987年 | 275篇 |
1986年 | 247篇 |
1985年 | 369篇 |
1984年 | 411篇 |
1983年 | 383篇 |
1982年 | 342篇 |
1981年 | 322篇 |
1980年 | 283篇 |
1979年 | 292篇 |
1978年 | 211篇 |
1977年 | 218篇 |
1976年 | 193篇 |
1975年 | 142篇 |
1974年 | 152篇 |
1973年 | 132篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
122.
123.
124.
Williams DS 《Journal of insurance medicine (New York, N.Y.)》2012,43(1):41-43
Right-sided endocarditis is uncommon and usually involves the tricuspid valve. It occurs primarily in intravenous drug uses, and patients having pacemakers, central lines, or congenital heart disease. 相似文献
125.
The question of whether optimal provision of these services comes mainly from established relationships between banks and client firms or can result from arms'‐length market transactions has been the topic of considerable recent debate. This discussion has paralleled the debate in the commercial banking literature on the “specialness” of banks and whether lending can and should be relational or purely transactional. Whether the provision of investment bank services is relationship‐based or transactional is especially relevant now thanks to recent trends that have blurred the distinction between commercial and investment banks, and changed the competitive landscape for investment bank services. In their study summarized in this article, the authors examine whether investment bank‐client relationships create valuable relationship‐specific capital using stock market evidence from the period surrounding the collapse of Lehman Brothers. Specifically, they studied the effect of the Lehman collapse on companies that used Lehman for (1) underwriting equity offerings, (2) underwriting debt offerings, (3) advice on mergers and acquisitions, (4) analyst research services, and (5) market‐making services. The study addressed two specific questions. First, which investment bank services, if any, are associated with the creation of relationship‐specific capital; and second, what are the value drivers of this relationship capital? The authors report finding that companies that used Lehman as lead underwriter for public equity offerings experienced significantly negative abnormal stock returns in the days surrounding Lehman's bankruptcy announcement. By contrast, they find no significant reaction to the announcement for Lehman's debt underwriting clients or any of the other client categories they examine. While most of these investment bank services have at least the potential to create relationship‐specific capital, the authors' findings suggest that except for equity underwriting, all the other investment bank services appear to be transactional rather than relationship‐based, at least in the average case. Moreover, the authors report significant differences even among different groups of Lehman's equity underwriting clients. An equity underwriting relationship with Lehman appears to have been especially valuable for smaller, younger, and more financially constrained firms—those firms which presumably had a high degree of dependence on Lehman to access the capital market. 相似文献
126.
127.
David J. Smyth 《Review of World Economics》1995,131(2):403-405
Conclusions This paper has found a significant and substantial negative relationship between inflation and economic growth in Germany.
Thus, inflation substantially reduced the rate of productivity growth and output growth in Germany. German policymakers, especially
the Bundesbank, have emphasized the importance of low inflation rates, and inflation in Germany has been less than in most
OECD countries. As a result, Germany has benefitted from relatively high rates of economic growth. But had the Bundesbank
succeeded in achieving zero inflation, the underlying rate of productivity growth would have been almost a third higher and
output growth about a sixth higher. 相似文献
128.
Reforming Hungarian Agricultural Trade Policy: A Quantitative Evaluation. — In this paper, the authors quantitatively assess the consequences for Hungary of: (i) removing its quantitative import restraints in agriculture, (ii) removing the export subsidy program in agriculture, and (iii) adopting an EU-type “CAP” system in Hungary. The consequences are estimated through the use of a small open economy computable general equilibrium model for Hungary, calibrated to the year 1990. The tariff equivalent of the import licenses was estimated through a detailed price comparisons study, the first of its kind for Hungary. Import protection, export subsidies and a potential CAP system would contribute significantly to the Government's fiscal problems. 相似文献
129.
130.
Natural-hyped products are receiving greater attention from and acceptance by consumers worldwide. Environmental factors that foster the demand for natural-hyped products, specifically hemp-based products include the deregulation of the cannabis industry and greater consumer desire for natural foods. Adding to this, the strategic use of stimulant type of cues (e.g., a cannabis leaf) included in product logos, ads, and packaging, seems to create hype associations when evaluating hemp-based products. In this context, this study presents empirical evidence (three experiments and two qualitative studies) that illustrates consumer preference for hemp-based products over ones that do not include hemp as an ingredient (hemp-free). The research focuses on identifying the psychological determinant that orients consumers towards hemp-based products. Findings suggest that the perceived naturalness is the psychological mechanism behind consumers positive evaluation of hemp-based products. Moreover, this study presents evidence that this evaluation is enhanced by the consumer's need for stimulation. Implications of the findings for the role of perceived naturalness and the need for stimulation in marketing strategies are discussed. 相似文献