全文获取类型
收费全文 | 34238篇 |
免费 | 740篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 6146篇 |
工业经济 | 2601篇 |
计划管理 | 5835篇 |
经济学 | 7878篇 |
综合类 | 393篇 |
运输经济 | 255篇 |
旅游经济 | 512篇 |
贸易经济 | 5732篇 |
农业经济 | 1704篇 |
经济概况 | 3839篇 |
信息产业经济 | 4篇 |
邮电经济 | 80篇 |
出版年
2021年 | 216篇 |
2020年 | 401篇 |
2019年 | 614篇 |
2018年 | 682篇 |
2017年 | 724篇 |
2016年 | 707篇 |
2015年 | 498篇 |
2014年 | 773篇 |
2013年 | 3494篇 |
2012年 | 1091篇 |
2011年 | 1182篇 |
2010年 | 1008篇 |
2009年 | 1149篇 |
2008年 | 1018篇 |
2007年 | 988篇 |
2006年 | 895篇 |
2005年 | 746篇 |
2004年 | 690篇 |
2003年 | 701篇 |
2002年 | 679篇 |
2001年 | 720篇 |
2000年 | 697篇 |
1999年 | 606篇 |
1998年 | 683篇 |
1997年 | 631篇 |
1996年 | 622篇 |
1995年 | 539篇 |
1994年 | 553篇 |
1993年 | 532篇 |
1992年 | 591篇 |
1991年 | 578篇 |
1990年 | 511篇 |
1989年 | 402篇 |
1988年 | 395篇 |
1987年 | 439篇 |
1986年 | 424篇 |
1985年 | 591篇 |
1984年 | 614篇 |
1983年 | 572篇 |
1982年 | 499篇 |
1981年 | 493篇 |
1980年 | 484篇 |
1979年 | 489篇 |
1978年 | 350篇 |
1977年 | 302篇 |
1976年 | 277篇 |
1975年 | 278篇 |
1974年 | 236篇 |
1973年 | 228篇 |
1972年 | 161篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
This study examines effects of four combinations of accounting bases and service levels — GAAP and income tax bases, and audit and review service levels — on loan officers' decisions, both separately and in interaction. It examines effects on loan decisions and perceptions of interest rates, default risk, confidence, and usefulness. The interaction of accounting basis and service level significantly affects perceived confidence but does not affect other decisions. Accounting basis and service level separately affect interest rates, default risk, and report usefulness, but do not affect the loan decision. 相似文献
52.
Bayesian MCMC Mapping of Quantitative Trait Loci in a Half-sib Design: a Graphical Model Perspective
N.A. Sheehan B. Gulbrandtsen M.S. Lund D.A. Sorensen 《Revue internationale de statistique》2002,70(2):241-267
Graphical models provide a powerful and flexible approach to the analysis of complex problems in genetics. While task-specific software may be extremely efficient for any particular analysis, it is often difficult to adapt to new computational challenges. By viewing these genetic applications in a more general framework, many problems can be handled by essentially the same software. This is advantageous in an area where fast methodological development is essential. Once a method has been fully developed and tested, problem-specific software may then be required. The aim of this paper is to illustrate the potential use of a graphical model approach to genetic analyses by taking a very simple and well-understood problem by way of example. 相似文献
53.
Stuart M. Turnbull 《Economic Notes》2002,31(2):215-236
Given the objective of maximizing the wealth of existing shareholders, this paper discusses some of the issues that arise in attempting to measure the performance of individual businesses within a bank. The paper describes two return measures – return on assets within a business and the return on the 'equity' of an individual business – and discusses the appropriate bench–marks. The paper ends with a discussion of the cost of unused allocated capital and the appropriate performance metric.
(J.E.L.: G30, G31). 相似文献
(J.E.L.: G30, G31). 相似文献
54.
We develop a method for determining the significance of the effect of a certain event (stock split, corporate restructuring, change in regulation, etc.) on unsystematic volatility of asset returns. Simulations show that the suggested tests reject the true null hypothesis of no effect on volatility at appropriate levels, whereas the rejection rates of a false null hypothesis increase with the magnitude of the effect. An application of the method to corporate spin‐offs reveals statistically significant and long‐lasting estimated increases in unsystematic volatility of parent companies' returns. 相似文献
55.
Extant empirical research has reported nonlinear behavior within arbitrage relationships. In this article, the authors consider potential nonlinear dynamics within FTSE‐100 index and index‐futures. Such nonlinearity can be rationalized by the existence of transactions costs or through the interaction between informed and noise traders. They consider several empirical models designed to capture these alternative dynamics. Their empirical results provide evidence of a stationary basis term, and thus cointegration between index and index‐futures, and the presence of nonlinear dynamics within that relationship. The results further suggest that noise traders typically engage in momentum trading and are more prone to this behavior type when the underlying market is rising. Fundamental, or arbitrage, traders are characterized by heterogeneity, such that there is slow movement between regimes of behavior. In particular, fundamental traders act more quickly in response to small deviations from equilibrium, but are reluctant to act quickly in response to larger mispricings that are exposed to greater noise trader price risk. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:343–368, 2006 相似文献
56.
Lindon J. Robison Robert J. Myers & Marcelo E. Siles 《Review of Agricultural Economics》2002,24(1):44-58
Social capital is a person or group's sympathy for or sense of obligation to another person or group. This article introduces social capital into a neoclassical model of farmland exchange and shows how relationships alter the terms of trade. Empirical evidence from a survey of farmers shows that the type of relationship farmland sellers have with farmland buyers has a statistically significant and economically important effect on the minimum-sell price for farmland. Compared to the minimum-sell price when selling to a total stranger in an arm's-length transaction, farmland sellers discount prices to friendly neighbors and relatives and require a premium from unfriendly neighbors and influential people in the community. 相似文献
57.
58.
Jin E. Zhang 《期货市场杂志》2003,23(6):535-560
This article explores the price of continuously sampled Asian options. For geometric Asian options, we present pricing formulas for both backward‐starting and forward‐starting cases. For arithmetic Asian options, we demonstrate that the governing partial differential equation (PDE) cannot be transformed into a heat equation with constant coefficients; therefore, these options do not have a closed‐form solution of the Black–Scholes type, that is, the solution is not given in terms of the cumulative normal distribution function. We then solve the PDE with a perturbation method and obtain an analytical solution in a series form. Numerical results show that as compared with Zhang's ( 2001 ) highly accurate numerical results, the series converges very quickly and gives a good approximate value that is more accurate than any other approximate method in the literature, at least for the options tested in this article. Graphical results determine that the solution converges globally very quickly especially near the origin, which is the area in which most of the traded Asian options fall. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:535–560, 2003 相似文献
59.
This article provides empirical evidence on the intraday relation between spot volatility and trading volume in the Spanish stock index futures market. GARCH methodology is used to estimate spot volatility. We analyze the potential relation between spot and futures trading volume and spot volatility by estimating the corresponding conditional density functions as proposed in Quah (1997). Our results reveal no significant link between those variables. Similar findings arise when expected and unexpected volume is considered. Our results suggest that derivative market is not a force behind episodes of significant spot jump volatility. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:841–858, 2003 相似文献
60.
Alexander E. Ellinger Daniel F. Lynch James K. Andzulis Ronn J. Smith 《Journal of Business Logistics》2003,24(1):199-220
An Internet presence is a critical early component in the process of building towards a fully operational and unified e‐commerce strategy. E‐commerce has significantly impacted logistics/supply chain strategies and the development and implementation of a website have become key issues for many firms within the transportation industry. This study provides an overview of website content within the motor carrier industry. Content analysis was used to assess the site design, informational content, and the interactive content of 152 motor carrier websites, and to compare the features offered on the Top 100 motor carrier firm websites with those offered on the sites of smaller carrier firms. 相似文献