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排序方式: 共有69条查询结果,搜索用时 46 毫秒
1.
In this paper, we study the family of renewal shot-noise processes. The Feynmann–Kac formula is obtained based on the piecewise deterministic Markov process theory and the martingale methodology. We then derive the Laplace transforms of the conditional moments and asymptotic moments of the processes. In general, by inverting the Laplace transforms, the asymptotic moments and the first conditional moments can be derived explicitly; however, other conditional moments may need to be estimated numerically. As an example, we develop a very efficient and general algorithm of Monte Carlo exact simulation for estimating the second conditional moments. The results can be then easily transformed to the counterparts of discounted aggregate claims for insurance applications, and we apply the first two conditional moments for the actuarial net premium calculation. Similarly, they can also be applied to credit risk and reliability modelling. Numerical examples with four distribution choices for interarrival times are provided to illustrate how the models can be implemented. 相似文献
2.
In this paper, we study the excursions of Bessel and Cox–Ingersoll–Ross (CIR) processes with dimensions . We obtain densities for the last passage times and meanders of the processes. Using these results, we prove a variation of the Azéma martingale for the Bessel and CIR processes based on excursion theory. Furthermore, we study their Parisian excursions, and generalize previous results on the Parisian stopping time of Brownian motion to that of the Bessel and CIR processes. We obtain explicit formulas and asymptotic results for the densities of the Parisian stopping times, and develop exact simulation algorithms to sample the Parisian stopping times of Bessel and CIR processes. We introduce a new type of bond, the zero‐coupon Parisian bond. The buyer of such a bond is betting against zero interest rates, while the seller is effectively hedging against a period where interest rates fluctuate around 0. Using our results, we propose two methods for pricing these bonds and provide numerical examples. 相似文献
3.
We compare the out-of-sample performance of monthly returns forecasts for two indices, namely the Dow Jones (DJ) and the Financial Times (FT) indices. A linear and a nonlinear artificial neural network (ANN) model are used to generate the out-of-sample competing forecasts for monthly returns. Stationary transformations of dividends and trading volume are considered as fundamental explanatory variables in the linear model and the input variables in the ANN model. The comparison of out-of-sample forecasts is done on the basis of forecast accuracy, using the Diebold and Mariano test [J. Bus. Econ. Stat. 13 (1995) 253.], and forecast encompassing, using the Clements and Hendry approach [J. Forecast. 5 (1998) 559.]. The results suggest that the out-of-sample ANN forecasts are significantly more accurate than linear forecasts of both indices. Furthermore, the ANN forecasts can explain the forecast errors of the linear model for both indices, while the linear model cannot explain the forecast errors of the ANN in either of the two indices. Overall, the results indicate that the inclusion of nonlinear terms in the relation between stock returns and fundamentals is important in out-of-sample forecasting. This conclusion is consistent with the view that the relation between stock returns and fundamentals is nonlinear. 相似文献
4.
Aikaterini Vassilikopoulou George Siomkos Kalliopi Chatzipanagiotou Angelos Pantouvakis 《Journal of Retailing and Consumer Services》2009,16(3):174-180
This paper focuses on product-harm crises and examines consumer responses associated with product defect in three time periods (i.e., 3 days, 3 months and 1 year after a crisis). An experiment was conducted based on three widely accepted- influences on product-harm crisis management (i.e., crisis extent, social responsibility and organizational responses). The fourth influencing factor, time, was introduced in the present study. The four-factor model for measuring the effectiveness of product-harm crisis management was tested with particular attention to the impact of time. Crises were described in scenarios for a fictitious mobile phone. The results demonstrate that the effects of a crisis are minimal a few months after the crisis has occurred. Consumers tend to “forget” about the crisis and its effects, especially in cases when the company is socially responsible, and when the company issues a voluntary recall of its product. 相似文献
5.
In this paper, we try to identify the price determinants in the biggest real estate market of Greece, the metropolitan area of Athens. For that purpose, various spatial econometric models are used to explore their prediction ability and we are displaying the variations in property prices for the wider area of Athens. These models have been compared based on different criteria such as model fit, the Akaike information criterion and variance of the residuals. Our results indicate that, in our case, the spatial general model is the most appropriate simultaneous autoregressive model when dealing with spatially autocorrelated prices of housing properties data, in terms of our selection criteria. 相似文献
6.
Angelos Kanas 《Review of Quantitative Finance and Accounting》2014,43(2):393-404
As the Basel III reforms, which come into effect from 2012, place emphasis on default risk, assessing the impact of Prompt Corrective Action (PCA) on default risk is of practical relevance. We provide strong evidence that both the dynamic and the contemporaneous impact of the PCA-defined tier 1 risk-based capital ratio and the tier 1 leverage ratio on default risk is reduced following PCA’s introduction. We interpret this as evidence that PCA is effective in managing the default risk of the U.S. commercial banking sector. 相似文献
7.
Kanas Angelos Zervopoulos Panagiotis D. 《Review of Quantitative Finance and Accounting》2021,57(2):461-485
Review of Quantitative Finance and Accounting - Using a mixed frequency VAR methodology, which can accommodate variables with different frequencies in a VAR framework, we model the relation between... 相似文献
8.
Angelos Adonis Antzoulatos 《International Advances in Economic Research》2011,17(3):241-257
The Greek crisis in 2010 was a tragedy waiting to happen. However, and contrary to the impression created by the stabilization
program’s immediate focus on restoring fiscal balance, its roots lie in the erosion of international competitiveness over
the past three decades and the attendant de-industrialization of the country. Catharsis, i.e., the creation of the conditions for sustainable long-run growth, requires a coherent, medium-term strategy, bolstered by
wide social consensus, to improve competitiveness and redeploy labor and other production factors to the tradeable sector.
Nevertheless, owing to the accumulated imbalances, catharsis is fraught with risks. Yet, the proposed alternatives, such as,
government debt rescheduling with possible discount and a temporary or permanent exit from EMU, are even worse. They are not
likely to succeed, for they do not adequately address the dramatic erosion of competitiveness and have severe potential repercussions. 相似文献
9.
10.
ABSTRACTThis study investigates whether the previously reported price impact of OTC trades in the EU ETS can be attributed to their distinctively larger size (liquidity related) or to their discretionary feature (information related). The findings suggest that OTC trades induce volatility shocks that are higher in magnitude and faster resolved than those of solely high trading-intensity trades, which appears to be driven mainly by their presence, rather than by their size. An analysis of intraday price premia reveals that they are strategically placed by interacting with the organized market whenever their price and volatility impact is lower. 相似文献