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31.
Quantile forecasts of daily exchange rate returns from forecasts of realized volatility 总被引:2,自引:0,他引:2
Quantile forecasts are central to risk management decisions because of the widespread use of Value-at-Risk. A quantile forecast is the product of two factors: the model used to forecast volatility, and the method of computing quantiles from the volatility forecasts. In this paper we calculate and evaluate quantile forecasts of the daily exchange rate returns of five currencies. The forecasting models that have been used in recent analyses of the predictability of daily realized volatility permit a comparison of the predictive power of different measures of intraday variation and intraday returns in forecasting exchange rate variability. The methods of computing quantile forecasts include making distributional assumptions for future daily returns as well as using the empirical distribution of predicted standardized returns with both rolling and recursive samples. Our main findings are that the Heterogenous Autoregressive model provides more accurate volatility and quantile forecasts for currencies which experience shifts in volatility, such as the Canadian dollar, and that the use of the empirical distribution to calculate quantiles can improve forecasts when there are shifts. 相似文献
32.
Calibration estimation, where the sampling weights are adjusted to make certain estimators match known population totals, is commonly used in survey sampling. The generalized regression estimator is an example of a calibration estimator. Given the functional form of the calibration adjustment term, we establish the asymptotic equivalence between the functional-form calibration estimator and an instrumental variable calibration estimator where the instrumental variable is directly determined from the functional form in the calibration equation. Variance estimation based on linearization is discussed and applied to some recently proposed calibration estimators. The results are extended to the estimator that is a solution to the calibrated estimating equation. Results from a limited simulation study are presented. 相似文献
33.
34.
This paper empirically investigates the effects of the 1997 financial crisis on the efficiency of eight Asian stock markets, applying the rolling bicorrelation test statistics for the three sub-periods of pre-crisis, crisis, and post-crisis. On a country-by-country basis, the results demonstrate that the crisis adversely affected the efficiency of most Asian stock markets, with Hong Kong being the hardest hit, followed by the Philippines, Malaysia, Singapore, Thailand and Korea. However, most of these markets recovered in the post-crisis period in terms of improved market efficiency. Given that the evidence of nonlinear serial dependencies indicates equilibrium deviation resulted from external shocks, the present findings of higher inefficiency during the crisis are not surprising as in the chaotic financial environment at that time, investors would overreact not only to local news, but also to news originating in the other markets, especially when the news events were adverse. 相似文献
35.
This paper examines the return predictability of the US stock market using portfolios sorted by size, book-to-market ratio and industry. We use novel panel variance ratio tests, based on the wild bootstrap proposed in this paper, which exhibit desirable size and power properties in small samples. We have found evidence that stock returns have been highly predictable from 1964 to 1996, except for a period leading to the 1987 crash and its aftermath. After 1997, stock returns have been unpredictable overall. At a disaggregated level, we find evidence that large-cap portfolios have been priced more efficiently than small- or medium-cap portfolios; and that the stock returns from high-tech industries are far less predictable than those from non-high-tech industries. 相似文献
36.
Jae Joon Han 《Asia-Pacific Journal of Financial Studies》2010,39(5):553-577
This paper presents an analytical explanation of price volatility and mispricing in a rational financial market. In the proposed model, specialists might have private interest in manipulating their reports, which can affect the security price. Additionally, traders differ in terms of both rationality and available information. The present study shows that mispricing and price volatility occurs in a rational financial market when specialist reports are incorporated under different trader types. Also analyzed are comparative statics of the magnitude of misreports, the informativeness of the price, and price volatility when the ratio of superior traders to ordinary traders changes. Both price volatility and the potential for extra profit gain by superior traders might increase when they are dominant. 相似文献
37.
This paper is an empirical study identifying the role of a relationship-specific capability of building capabilities through relationships (CBC) when suppliers put efforts into increasing their perceived market effectiveness by managing the effects of relationship quality. The relationship between relationship quality and effectiveness is mediated by CBC. Suppliers in a supply chain form different levels of relationship quality with partners in response to market conditions and industry characteristics. Relationship marketing by suppliers requires a deep understanding of the role of CBC that is developed by a supplier and an effective utilization of CBC to lead an effective relationship to better outcomes. This leads to maximizing of the competitive advantages for suppliers and will help maintain effective relationships. 相似文献
38.
A technology roadmap (TRM) links technologies with a company's strategic objectives and so supports acquisition of required technologies in advance of needs. It is a powerful tool for strategic planning and technology management. Because technology is changing rapidly and market competition is fierce, the role of a TRM is becoming increasingly important. To support the role of a TRM, many firms and governments that use roadmapping are becoming interested in reducing costs while retaining objectivity during TRM development. One suggestion to achieve these goals is to use the keyword‐based quantitative approach to creating a TRM, but the information provided by the approach is limited because of the characteristics of keyword information. To solve this limitation, this research uses the concept of ‘function’ to support quantitative analysis for developing a TRM. The concept of function can provide information on the uses and purposes of a technology. To represent a function, a subject–action–object structure is commonly used. The suggested approach allows research and development (R&D) managers to extend the views of product and technology during development of a TRM. In addition, by reducing the time required to develop a TRM, the proposed approach supports quick and accurate decision‐making by R&D managers. 相似文献
39.
Small sample properties of asymptotic and bootstrap prediction regions for VAR models are evaluated and compared. Monte Carlo simulations reveal that the bootstrap prediction region based on the percentile-t method outperforms its asymptotic and other bootstrap alternatives in small samples. It provides the most accurate assessment of future uncertainty under both normal and non-normal innovations. The use of an asymptotic prediction region may result in a serious under-estimation of future uncertainty when the sample size is small. When the model is near non-stationary, the use of the bootstrap region based on the percentile-t method is recommended, although extreme care should be taken when it is used for medium to long-term forecasting. 相似文献
40.
Jae Wook Yoo Richard Reed Shung Jae Shin David J. Lemak 《Journal of Management Studies》2009,46(2):308-335
This work examines how the strategic choice and performance of late movers are influenced by the top management team's external ties, inside and outside the firm's industry. Using a multiyear sample of firms from the computer industry, we found that intra-industry trade-association ties of top managers led to the adoption of a resource-imitation strategy by late movers while extra-industry importation and professional-association ties led to the adoption of a resource-substitution strategy. We also found that trade association ties had a negative effect on the performance of late movers using resource-substitution, while top managers' service on other firms' boards had a positive influence on the performance of those firms. Our findings not only confirm the importance of the role of fit in strategy and performance, but they also highlight the importance of the management and control of boundary-spanning activities. 相似文献