全文获取类型
收费全文 | 62251篇 |
免费 | 1310篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 11799篇 |
工业经济 | 4781篇 |
计划管理 | 10081篇 |
经济学 | 13953篇 |
综合类 | 901篇 |
运输经济 | 474篇 |
旅游经济 | 1054篇 |
贸易经济 | 9784篇 |
农业经济 | 3101篇 |
经济概况 | 7530篇 |
信息产业经济 | 3篇 |
邮电经济 | 101篇 |
出版年
2021年 | 384篇 |
2020年 | 747篇 |
2019年 | 1149篇 |
2018年 | 1271篇 |
2017年 | 1342篇 |
2016年 | 1319篇 |
2015年 | 884篇 |
2014年 | 1451篇 |
2013年 | 6434篇 |
2012年 | 1908篇 |
2011年 | 2115篇 |
2010年 | 1812篇 |
2009年 | 2037篇 |
2008年 | 1987篇 |
2007年 | 1690篇 |
2006年 | 1581篇 |
2005年 | 1412篇 |
2004年 | 1346篇 |
2003年 | 1361篇 |
2002年 | 1294篇 |
2001年 | 1302篇 |
2000年 | 1307篇 |
1999年 | 1165篇 |
1998年 | 1192篇 |
1997年 | 1150篇 |
1996年 | 1087篇 |
1995年 | 1015篇 |
1994年 | 1001篇 |
1993年 | 1003篇 |
1992年 | 1023篇 |
1991年 | 1021篇 |
1990年 | 890篇 |
1989年 | 750篇 |
1988年 | 707篇 |
1987年 | 746篇 |
1986年 | 720篇 |
1985年 | 1054篇 |
1984年 | 1078篇 |
1983年 | 974篇 |
1982年 | 903篇 |
1981年 | 862篇 |
1980年 | 880篇 |
1979年 | 809篇 |
1978年 | 677篇 |
1977年 | 591篇 |
1976年 | 539篇 |
1975年 | 503篇 |
1974年 | 455篇 |
1973年 | 450篇 |
1972年 | 301篇 |
排序方式: 共有10000条查询结果,搜索用时 23 毫秒
91.
D. P. Kennedy 《Mathematical Finance》1993,3(1):55-63
For a compound Poisson process with negative drift and jump distribution consisting of a mixture of exponentials on [0) and on (-, 0), an exact expression is derived for the probability of hitting the level c, c > 0. the problem is motivated by modeling the returns from trading on financial markets. 相似文献
92.
This article examines innovation in the securities industry with the central objective of identifying factors that separate innovators from non-innovators. Akira Iwamura and Vijay Jog report results based on their survey of corporate finance vice presidents or CEO's of 43 investment houses from around the world. They conclude that innovative companies seem to be larger and have a well-defined strategy, with management defining the focus of the business. In addition, the firms have developed better communication channels, both internally and with their customers. Yet, the most significant difference that separates innovators from non-innovators is their management of the idea generation process, including concept generation and management's support. Innovators tend to approach idea generation in the following ways: they employ a variety of idea sources, both internal and external; they assign a specific person or group to be in charge of developing new ideas; they encourage employees at all levels to generate new ideas; they use a variety of innovative techniques to stimulate creativity; they reward their employees by non-monetary means; and they encourage group-level participation in evaluation decisions. 相似文献
93.
If a tax on energy affects the demand for a nondurable good, the stock of a durable good, and the proportion of the energy consumption per unit of service of the durable good, an integrated approach for investigating consumer demand for durables and nondurables is required. The purpose of this paper is to employ the concept of a variable expenditure function with quasi-fixed durable goods as arguments in order to derive a demand system for nondurable goods in prices of the nondurables, in the stocks of durables, and in variable expenditure. From the envelope condition desired stocks of durables can be calculated and investment demand for durables can be determined. For an application we choose a variable expenditure function based on the almost ideal demand specification, and evaluate alternative environmental policy measures using the equivalent variation for comparing the welfare effects. 相似文献
94.
A. A. Smith 《Journal of Applied Econometrics》1993,8(Z1):S63-S84
This paper develops two new methods for conducting formal statistical inference in nonlinear dynamic economic models. The two methods require very little analytical tractability, relying instead on numerical simulation of the model's dynamic behaviour. Although one of the estimators is asymptotically more efficient than the other, a Monte Carlo study shows that, for a specific application, the less efficient estimator has smaller mean squared error in samples of the size typically encountered in macroeconomics. The estimator with superior small sample performance is used to estimate the parameters of a real business cycle model using observed US time-series data. 相似文献
95.
Statement of Financial Accounting Standards (SFAS) No. 96, “Accounting for Income Taxes,” issued by the Financial Accounting Standards Board (FASB) in December 1987 changed accounting for income tax recognition and accrual. The original deadline for implementation of SFAS No. 96 was December 15, 1988, and earlier adoption was encouraged. This study examines empirically the stock price impact of four pertinent announcement dates regarding SFAS No. 96 for 19 banks that adopted the statement in late 1987 and early 1988. Our results suggest that these early bank adopters have different characteristics from other banks that cause them to benefit from the changes in accounting for deferred taxes and explain their voluntary adoption of the standard. 相似文献
96.
Andrey D. Ukhov 《The Journal of Financial Research》2004,27(3):329-339
The classical warrant pricing formula requires knowledge of the firm value and of the firm‐value process variance. When warrants are outstanding, the firm value itself is a function of the warrant price. Firm value and firm‐value variance are then unobservable variables. I develop an algorithm for pricing warrants using stock prices, an observable variable, and stock return variance. The method also enables estimation of firm‐value variance. A proof of existence of the solution is provided. 相似文献
97.
Abstract. We experimentally investigate the effects of a mandatory increase in education on the market for professional labor services when several service qualities are assumed to exist. We show that when suppliers have insufficient incentives to offer high-quality services in a free market, an increase in mandatory education can improve the coordination of supplier decisions and increase efficiency. If suppliers voluntarily provide a sufficient quantity of high-quality services, an education constraint can have the opposite effect. In both instances, however, an increase in the mandatory level of education can be expected to reduce the price of high-quality services while increasing the price of lower service qualities. Résumé. Les auteurs ont procédé à une analyse expérimentale des conséquences qu'aurait une hausse imposée du niveau d'études sur le marché des services professionnels, si l'on suppose l'existence de plusieurs qualités de services. L'analyse démontre que lorsque les stimulants sont insuffisants pour inciter les fournisseurs à offrir des services professionnels de qualité supérieure dans un marché libre, une hausse imposée du niveau d'études peut améliorer la coordination des décisions des fournisseurs et augmenter l'efficience. Si toutefois les fournisseurs offrent de leur propre chef une quantité suffisante de services de qualité supérieure, le fait d'imposer un niveau d'études supérieur peut avoir l'effet contraire. Dans les deux cas, on peut s'attendre à ce qu'une hausse du niveau d'études obligatoire réduise le prix des services de qualité supérieure tout en augmentant le prix des services de qualité plus faible. 相似文献
98.
In this paper we investigate the effect of golden parachute (GP) adoptions on shareholder wealth. We control for the potential effect a GP adoption has on the probability that a firm will receive a takeover bid by investigating the wealth effects for firms that are in play when the GP is adopted. We find that announcements are wealth neutral when firms are in play and wealth increasing when firms are not in play when a GP is adopted. The results suggest that GPs have no influence on the success of a tender offer, refuting the hypotheses that they either align manager and shareholder interests or that they entrench inefficient managers. The difference in the results for in-play and not-in-play firms is consistent with the hypothesis that GPs signal an increased likelihood that a firm will receive a takeover bid. 相似文献
99.
Great variation in nursing resource use is documented within DRGs. Much of this variation may be explained by patient severity of illness. Variance in nursing resource use within DRGs can be reduced by using a severity of illness instrument to score patients. 相似文献
100.