全文获取类型
收费全文 | 2033篇 |
免费 | 82篇 |
专业分类
财政金融 | 320篇 |
工业经济 | 164篇 |
计划管理 | 410篇 |
经济学 | 460篇 |
综合类 | 18篇 |
运输经济 | 28篇 |
旅游经济 | 43篇 |
贸易经济 | 405篇 |
农业经济 | 58篇 |
经济概况 | 206篇 |
邮电经济 | 3篇 |
出版年
2023年 | 12篇 |
2022年 | 17篇 |
2021年 | 22篇 |
2020年 | 32篇 |
2019年 | 52篇 |
2018年 | 68篇 |
2017年 | 60篇 |
2016年 | 103篇 |
2015年 | 66篇 |
2014年 | 105篇 |
2013年 | 286篇 |
2012年 | 88篇 |
2011年 | 99篇 |
2010年 | 97篇 |
2009年 | 93篇 |
2008年 | 69篇 |
2007年 | 80篇 |
2006年 | 47篇 |
2005年 | 43篇 |
2004年 | 34篇 |
2003年 | 49篇 |
2002年 | 44篇 |
2001年 | 29篇 |
2000年 | 47篇 |
1999年 | 48篇 |
1998年 | 36篇 |
1997年 | 29篇 |
1996年 | 19篇 |
1995年 | 21篇 |
1994年 | 25篇 |
1993年 | 26篇 |
1992年 | 15篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 15篇 |
1988年 | 9篇 |
1987年 | 11篇 |
1986年 | 15篇 |
1985年 | 20篇 |
1984年 | 22篇 |
1983年 | 18篇 |
1982年 | 15篇 |
1981年 | 13篇 |
1980年 | 11篇 |
1979年 | 9篇 |
1978年 | 15篇 |
1977年 | 6篇 |
1976年 | 6篇 |
1975年 | 5篇 |
1972年 | 7篇 |
排序方式: 共有2115条查询结果,搜索用时 15 毫秒
1.
Estimation of expected return is required for many financial decisions. For example, an estimate for cost of capital is required for capital budgeting and cost of equity estimates are needed for performance evaluation based on measures such as EVA. Estimates for expected return are often based on the Capital Asset Pricing Model (CAPM), which states that expected excess return (expected return minus the risk-free rate) is equal to the asset's sensitivity to the world market portfolio (β) times the risk premium on the “world market portfolio” (the market risk premium). Since the world market portfolio, by definition, contains all assets in the world, it is not observable. As a result, an estimate for expected return is commonly obtained by taking an estimate for β based on some index (as a proxy for the world market portfolio) and an estimate for the market risk premium based on a potentially different index and multiplying them together. In this paper, it is shown that this results in a biased estimate for expected return. This is undesirable since biased estimates lead to misallocation of funds and biased performance measures. It is also shown in this paper that the straightforward procedure suggested by Fama and MacBeth [J. Financ. Econ. 1 (1974) 43] results in an unbiased estimate for expected return. Further from the analysis done, it follows that, for an unbiased estimate, it does not matter what proxy is used, as long as it is used correctly an unbiased estimate for expected return results. 相似文献
2.
3.
Jan W. Van Deth 《Quality and Quantity》1986,20(2-3):261-272
This article presents an application of Prezeworski and Teune's so-called “identity-equivalence method” to a large set of indicators of political participation. By relaxing commonly held assumptions about necessary distinctions among types of participation, it is found that the distinction between “conventional” and “unconventional” modes of participation is unnecessary, while the distinction between “government” and “nongovernment” has some merit. The findings also lend further support to the claims of Prezeworski and Teune that the identity-equivalence method is preferable to the identical indicator method. 相似文献
4.
On Conditional Density Estimation 总被引:1,自引:0,他引:1
With the aim of mitigating the possible problem of negativity in the estimation of the conditional density function, we introduce a so-called re-weighted Nadaraya-Watson (RNW) estimator. The proposed RNW estimator is constructed by a slight modification of the well-known Nadaraya-Watson smoother. With a detailed asymptotic analysis, we demonstrate that the RNW smoother preserves the superior large-sample bias property of the local linear smoother of the conditional density recently proposed in the literature. As a matter of independent statistical interest, the limit distribution of the RNW estimator is also derived. 相似文献
5.
The assessment of public universities has gained importance because of the demands from such state government bodies as the executive and the legislature. Public universities are increasingly being asked to account for how efficiently they have used diminishing state financial resources. Administrators thus have the responsibility of ensuring that the university's financial, human, and physical resources are allocated to academic departments in a manner that enhances the institution's efficiency. In this paper, data envelopment analysis (DEA) is proposed for evaluating the efficiency of academic departments at a public university. DEA provides a single measure of efficiency for each academic unit. It also identifies the causes behind the inefficiencies exhibited by poor performing units, as well as the changes that these units need to make in order to improve their efficiencies. Its usefulness as a planning tool is also discussed. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
6.
Generally valid scientific explanations of observable social phenomena are still hardly available. By applying philosophical insights generated by Quine and derived from semiotics to social research methodology three kinds of context dependencies accompanying theory formation within social science are identified. The third context dependency is mostly not attended in theory formation about social phenomena thereby producing a ``connotation fallacy', which leaves almost all social theories undetermined and fallible. These context dependencies should be taken into account in the research design and be tested for using statistical criteria comprising a new methodology presented in this article. 相似文献
7.
Many observers argue that informed and insider trading is widespread in the emerging financial markets of transition countries, yet rigorous treatment of this issue has been virtually non–existent. The current paper estimates the extent of informed trading on the Prague Stock Exchange (PSE) using intra–day transaction data. Our estimates confirm that the average share of informed trading is equal to 0.32, which is high relative to developed markets and varies considerably among stocks. Using the Easley et al. (1996) approach on the very best segment of the PSE we obtained a high average probability of informed trading. Since data used in this study cover the period after the major attempts to improve market regulations, our results indicate that the PSE needs further strengthening to recover credibility and to become a real source of corporate financing. JEL classification: G14, G15. 相似文献
8.
This paper provides a macroeconomic perspective for governmentinterventions in banking crisis. Such crisis occur when a largenumber of banks fail to meet capital requirements or are insolvent.Using a macroeconomic model with financial intermediation, ouranalyis suggests that strict enforcement of capital-adequaterules suffices in prosperous periods. Capital requirements serveas an indicator for crises interventions in critical stateswhich may require interest rate intervention and restructuringof the banking industry. These policies can be reinforced byrandom bailouts and temporary financial relief, with a largepercentage of the costs being covered by current and futureowners of banks. (JEL D41, E4, G2) 相似文献
9.
10.
Jan Selmer 《Thunderbird国际商业评论》2006,48(3):347-368
Although the standard of English proficiency is rising in China, using English in conversations with Chinese host nationals may be difficult. Therefore, proficiency in the Chinese language may promote the adjustment of foreign business expatriates in China. To test this proposition, a mail survey was directed to Western business expatriates assigned to China. Controlling for the time expatriates had spent in China, results showed that their language ability had a positive association with their sociocultural adjustment. Not surprisingly, this positive relationship was strongest for interaction adjustment and weakest for work adjustment. The straightforward implications of these clear findings are discussed in detail. © 2006 Wiley Periodicals, Inc. 相似文献