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211.
随机漫步理论认为股票的价格是不能预测的,许多实证检验的结果也支持了这一结论。但是,近年来均值回归理论对随机漫步理论提出了挑战。从长期来看,股票价格呈均值回归是必然的;均值回归具有不对称性;政府行为对股票的均值回归具有一定的影响。 相似文献
212.
Shinhua Liu 《Journal of Financial Services Research》2007,32(3):161-176
This study examines the effect of transaction costs on the time series behavior of stock returns over a period surrounding
the April 1989 changes in tax rates on securities transactions and capital gains in Japan. We find significant decreases in
estimates of the first-order autocorrelation in returns for Japanese stocks listed in Japan, but no changes for Japanese stocks
dually listed in the United States as American Depository Receipts (ADRs), which were not subject to the tax law change. We
also find lower price basis between the ADRs and their underlying Japanese stocks. These results are consistent with the hypothesis
that a reduction in transaction costs improves the efficiency of the price discovery process.
相似文献
Shinhua LiuEmail: |
213.
Neill John D. Perfect Steven B. Wiles Kenneth W. 《Review of Quantitative Finance and Accounting》1999,13(3):261-276
We examine individual IPO betas and provide further evidence that the documented decline in IPO betas results primarily from a seasoning or information effect and not from the delisting of high beta securities. We employ stochastic coefficient regression analysis which permits the estimation of individual IPO betas at all points in time, and therefore avoids disadvantages associated with grouped cross-sectional beta estimates and average individual time-series beta estimates. We find that IPO firms with the lowest betas are more likely to delist, and that individual IPO betas, on average, decline over time which provides support for the information hypothesis. 相似文献
214.
This article proposes a bias-adjusted estimator for use in cointegratedpanel regressions when the errors are cross-sectionally correlatedthrough an unknown common factor structure. The asymptotic distributionof the new estimator is derived and is examined in small samplesusing Monte Carlo simulations. For the estimation of the numberof factors, several information-based criteria are considered.The simulation results suggest that the new estimator performswell in comparison to existing ones. In our empirical application,we provide new evidence suggesting that the forward rate unbiasednesshypothesis cannot be rejected. 相似文献
215.
The few existing studies on equity price dynamics and market efficiency for Latin American emerging equity markets show conflicting results. This study uses multiple varianceratio and auto-regressive fractionally integrated moving-average tests and new data (U.S. dollar-based national equity indices for the 1987–1997 period) to clarify these results. Documented evidence shows that equity prices in major Latin American emerging equity markets — Argentina, Brazil, Chile and Mexico—follow a random walk, and that they are, generally, weak-form efficient. In sum, therefore, the evidence suggests that international investors in these markets cannot use historical information to design systematically profitable trading schemes because future long-term returns are not dependent on past returns. 相似文献
216.
This paper investigates the synchronization of Hong Kong's economic growth with mainland China and the US. We identify trends of economic growth based on the permanent income hypothesis. Specifically, we first confirm whether real consumption in Hong Kong and mainland China satisfies the permanent income hypothesis, at least in a weak form. We then identify the permanent and transitory components of income of each economy using a simple state-space model. We use structural vector autoregression models to analyze how permanent and transitory shocks originating from mainland China and the US affect the Hong Kong economy, and how such influences evolve over time. Our main findings suggest that transitory shocks from the US remain a major driving force behind Hong Kong's business cycle fluctuations. On the other hand, permanent shocks from mainland China have a larger impact on Hong Kong's trend growth. 相似文献
217.
R.Q. Doeswijk 《De Economist》1997,145(4):573-598
The efficient markets hypothesis states that at any times security prices fully reflect all available information. Contrarian investment strategies do not recognize the efficiency of capital markets. They call for buying undervalued stocks, i.e. stocks with a low price relative to their fundamentals. The idea behind such a strategy is to take advantage of the extrapolation behaviour of naive investors. Using a fresh and extensive data set from the Dutch stock market, we found that these strategies yield an outperformance without a higher risk. Our results make it hard to maintain the efficient market hypothesis. 相似文献
218.
就如何制定踩踏草坪现象的监管措施提出假设,参考“囚徒困境博弈模型”,构建博弈支付矩阵,对假设措施进行检验。依据期望效用公式对假设进行优劣对比,最终否定假设,并得出相对的最优策略,以期对进一步减少校园踩踏草坪现象的发生提出建议。 相似文献
219.
文章运用有效市场假说理论,分析了金融市场4种不同的历史形态下金融市场的有效程度与多元化企业经营的内在关系。 相似文献
220.