全文获取类型
收费全文 | 13496篇 |
免费 | 311篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 2428篇 |
工业经济 | 1141篇 |
计划管理 | 2251篇 |
经济学 | 3024篇 |
综合类 | 192篇 |
运输经济 | 99篇 |
旅游经济 | 203篇 |
贸易经济 | 2306篇 |
农业经济 | 685篇 |
经济概况 | 1471篇 |
信息产业经济 | 1篇 |
邮电经济 | 7篇 |
出版年
2020年 | 144篇 |
2019年 | 196篇 |
2018年 | 217篇 |
2017年 | 250篇 |
2016年 | 248篇 |
2015年 | 172篇 |
2014年 | 261篇 |
2013年 | 1294篇 |
2012年 | 386篇 |
2011年 | 426篇 |
2010年 | 372篇 |
2009年 | 429篇 |
2008年 | 344篇 |
2007年 | 405篇 |
2006年 | 335篇 |
2005年 | 259篇 |
2004年 | 277篇 |
2003年 | 257篇 |
2002年 | 289篇 |
2001年 | 254篇 |
2000年 | 285篇 |
1999年 | 236篇 |
1998年 | 247篇 |
1997年 | 244篇 |
1996年 | 238篇 |
1995年 | 213篇 |
1994年 | 226篇 |
1993年 | 218篇 |
1992年 | 263篇 |
1991年 | 241篇 |
1990年 | 198篇 |
1989年 | 167篇 |
1988年 | 161篇 |
1987年 | 201篇 |
1986年 | 196篇 |
1985年 | 272篇 |
1984年 | 298篇 |
1983年 | 268篇 |
1982年 | 240篇 |
1981年 | 238篇 |
1980年 | 231篇 |
1979年 | 244篇 |
1978年 | 149篇 |
1977年 | 148篇 |
1976年 | 108篇 |
1975年 | 136篇 |
1974年 | 99篇 |
1973年 | 98篇 |
1972年 | 79篇 |
1971年 | 79篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
K.E. Hughes II & J. Kenneth Reynolds 《Journal of Business Finance & Accounting》2001,28(9&10):1351-1386
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
2.
3.
4.
Rudy K. Moenaert William E. Souder Arnoud De Meyer Dirk Deschoolmeester 《Journal of Product Innovation Management》1994,11(1):31-45
Rudy Moenaert, William Souder, Arnoud De Meyer, and Dirk Deschoolmeester report the results of their study of forty technologically innovative Belgian companies to examine the interaction between marketing and R&D. They studied one commercially successful and one commercially unsuccessful technological product innovation project in each participating company and collected data from one marketing and one R&D respondent per project. Communication flows between marketing and R&D are increased under conditions involving formalization of projects, decentralization, positive interfunctional climate, and role flexibility. 相似文献
5.
The paper investigates the incentives to commit price or retain price flexibility in a model in which exporting firms face different degrees of exchange rate uncertainty. The result shows that introducing exchange rate uncertainty can lead to the endogenous emergence of a unique leader–follower equilibrium; which firm emerges as price leader depends on the substitutability of products, the magnitude of exchange rate uncertainty, and the cost structure. This study may provide one explanation as to why some exporters set price before the realization of the nominal exchange rates (“sticky price”). The results imply exchange rate variability affects exchange rate passthrough. 相似文献
6.
This article reports on the latest in a series of international comparisons of management practices and performance outcomes of industries in various countries. Here, it is the service industries in the UK and the US which come under the microscope. Among the companies surveyed, there were more world-class performers in the US than the UK, but also more low performers. The concluding part of the article is diagnostic – the authors also suggest measures which could improve performance. 相似文献
7.
8.
John E. Keith David L. Barkley 《Review of urban and regional development studies : RURDS : journal of the Applied Regional Conference》1991,3(1):60-77
A study of the location of three classifications of high-tech industries in rural areas was undertaken using ordinary least squares, Tobit, and a two-step estimation procedure suggested by Heckman (1976). The results indicate that the location decision for high tech firms is influenced primarily by the county population, adjacency to an SMSA, and the expenditures on public infrastructure (exclusive of education expenditures). However, location near interstate highways was generally not a significant factor. Results were similar between branch and unit (single ownership) plants. Some differences in signs of orders of magnitude occurred among the estimation procedures. Making a choice between Tobit and Heckman approaches depends upon the goal of the research. 相似文献
9.
Recent research in finance has indicated that the institutional structure in which financial asset prices are determined can have a nontrivial impact on pricing. This report examines transaction level data for Treasury Note futures contracts traded at the Chicago Board of Trade (CBOT) to identify institutional, or market microstructure, impacts on the pricing of these contracts. Relatively few articles have conducted empirical research on the microstructure of U.S. futures trading due to the limited availability of comprehensive transaction level data from the futures exchanges. This report uses the CBOT's Computerized Trade Reconstruction database, a comprehensive transaction level dataset, to identify the price impact of the time duration between trades in a manner analogous to that of A. Dufour and R. F. Engle (2000). Unique differences from prior research include the application to futures contracts with their relative higher frequency of trading, as well as the investigation of the price impact of the number of active traders present on the trading floor and the trading volume. Subsequent price and sign of trade significantly relate to the time duration between trades, the number of floor brokers, and the trading volume. © 2004 Wiley Periodicals, Inc. Jrl. Fut Mark 24:965–980, 2004 相似文献
10.
The purpose of this study was to assess the basis behavior of the Live Cattle Futures contract at the Chicago Mercantile Exchange (CME) before and after the 1995 contract changes. Additionally, an alternative method of basis calculation utilizing weighted mean futures prices versus settlement futures prices was compared to determine which method provides a better representation of the basis level. Within a regression model with heteroskedascity error framework, we found that the level of nearby basis in the period after June 1995 has shifted lower and the average monthly open interest of net commercial long positions has substantially increased after the contract modifications. These empirical results are consistent with the notion that more long activity entered the market in response to the contract modifications. Additionally, an alternative (new) measure of basis calculation (cash price minus weighted mean futures price) produced similar results to two other commonly used measures. In conclusion, the 1995 contract changes have neither increased nor decreased the volatility of live cattle basis. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:557–590, 2004 相似文献