全文获取类型
收费全文 | 23044篇 |
免费 | 497篇 |
专业分类
财政金融 | 4069篇 |
工业经济 | 1619篇 |
计划管理 | 3988篇 |
经济学 | 5465篇 |
综合类 | 244篇 |
运输经济 | 181篇 |
旅游经济 | 348篇 |
贸易经济 | 3804篇 |
农业经济 | 1144篇 |
经济概况 | 2602篇 |
信息产业经济 | 3篇 |
邮电经济 | 74篇 |
出版年
2023年 | 112篇 |
2021年 | 150篇 |
2020年 | 289篇 |
2019年 | 461篇 |
2018年 | 513篇 |
2017年 | 545篇 |
2016年 | 536篇 |
2015年 | 358篇 |
2014年 | 581篇 |
2013年 | 2451篇 |
2012年 | 788篇 |
2011年 | 819篇 |
2010年 | 709篇 |
2009年 | 801篇 |
2008年 | 737篇 |
2007年 | 636篇 |
2006年 | 611篇 |
2005年 | 535篇 |
2004年 | 466篇 |
2003年 | 478篇 |
2002年 | 425篇 |
2001年 | 505篇 |
2000年 | 459篇 |
1999年 | 414篇 |
1998年 | 474篇 |
1997年 | 425篇 |
1996年 | 422篇 |
1995年 | 361篇 |
1994年 | 369篇 |
1993年 | 355篇 |
1992年 | 364篇 |
1991年 | 382篇 |
1990年 | 345篇 |
1989年 | 257篇 |
1988年 | 263篇 |
1987年 | 268篇 |
1986年 | 249篇 |
1985年 | 360篇 |
1984年 | 354篇 |
1983年 | 331篇 |
1982年 | 285篇 |
1981年 | 285篇 |
1980年 | 283篇 |
1979年 | 276篇 |
1978年 | 225篇 |
1977年 | 183篇 |
1976年 | 182篇 |
1975年 | 162篇 |
1974年 | 149篇 |
1973年 | 148篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
92.
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
93.
Real Investment Implications of Employee Stock Option Exercises 总被引:6,自引:0,他引:6
This paper examines a real cost of awarding employee stock options. Based on the observation that managers are extremely concerned about earnings-per-share dilution in equity related compensation, we predict and find that firms experiencing significant employee stock option (ESO) exercises shift resources away from real investments towards the repurchase of their own stocks. We further find weak evidence of a decline in subsequent firm performance (as measured by return on assets) for several years following the cut in discretionary investments as a result of stock option exercises, though this result is sensitive to the metric used to measure performance. Collectively, our findings indicate that ESO exercises potentially impose a real cost on the firm in terms of foregone investment opportunities. 相似文献
94.
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
95.
This article examines the puzzle of why futures prices continue to react to USDA crop reports despite the fact that reports appear to be no longer "newsworthy," that is, provide no better production estimates than private forecasts. The information value of reports is measured in terms of their influence on rational agents' harvest-time corn price expectations, which are uncovered using a Hamilton-type modeling approach. Results show that reports are still "newsworthy," as they would contribute to agents' price expectations if released a day early. Thus futures price reactions, which closely reflect price expectations, are rational and consistent with efficient markets hypothesis. 相似文献
96.
Common sense tells us that the future is an essential element in any strategy. In addition, there is a good deal of literature on scenario planning, which is an important tool in considering the future in terms of strategy. However, in many organizations there is serious resistance to the development of scenarios, and they are not broadly implemented by companies. But even organizations that do not rely heavily on the development of scenarios do, in fact, construct visions to guide their strategies. But it might be asked, what happens when this vision is not consistent with the future? To address this problem, the present article proposes a method for checking the content and consistency of an organization's vision of the future, no matter how it was conceived. The proposed method is grounded on theoretical concepts from the field of future studies, which are described in this article. This study was motivated by the search for developing new ways of improving and using scenario techniques as a method for making strategic decisions. The method was then tested on a company in the field of information technology in order to check its operational feasibility. The test showed that the proposed method is, in fact, operationally feasible and was capable of analyzing the vision of the company being studied, indicating both its shortcomings and points of inconsistency. 相似文献
97.
Who's in charge of the central city? The conflict between efficiency and equity in the design of a metropolitan area 总被引:1,自引:0,他引:1
A circular metropolitan area consists of a central city surrounded by a suburb. Households sort over the two jurisdictions based on public service levels and their costs of commuting to the metropolitan center. Using numerical simulations, we show that (1) there typically exist two equilibria: one in which the poor form the voting majority in the central city and the other in which the rich form the majority in the central city; (2) there is an efficiency vs. equity trade-off as to which equilibrium is preferred; and (3) if the central city contains only poor households, equity favors expanding the central city to include rich households. The third result arises not because of a fiscal subsidy from rich to poor households induced by a property tax but rather because of a change in house price capitalization. 相似文献
98.
We analyze a sample of 72 IPO firms that went public between 1992 and 1996 for which we have detailed proprietary information about the amount and cost of D&O liability insurance. If managers of IPO firms are exploiting superior inside information, we hypothesize that the amount of insurance coverage chosen will be related to the post-offering performance of the issuing firm's shares. Consistent with the hypothesis, we find a significant negative relation between the three-year post-IPO stock price performance and the insurance coverage purchased in conjunction with the IPO. One plausible interpretation is that, like insider securities transactions, D&O insurance decisions reveal opportunistic behavior by managers. This provides some motivation to argue that disclosure of the details of D&O insurance decisions, as is required in some other countries, is valuable. 相似文献
99.
100.