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41.
Kuo C. Tseng 《The Financial Review》1988,23(3):333-343
In this research, the individual and net effects of low price, low price/earnings (P/E) ratio, and small size on the risk-adjusted excess returns are investigated for the fourth quarter of 1975 to the fourth quarter of 1985. The entire sample is divided into quintiles, and the resulting portfolios are rebalanced at the end of each quarter. Low price, low P/E ratio, and small value portfolios did experience greater excess returns. By applying the experimental control technique, the net effect of stock price is significant after controlling the size. Similarly, the net effect of the market value is significant after the stock price is controlled. The net effect of the P/E ratio is insignificant after controlling either the stock price or the market value. 相似文献
42.
The analysis of a price war strategy under market demand growth 总被引:1,自引:0,他引:1
We use the finite repeated Prisoners' Dilemma game model herein to discuss how firms choose their optimal strategy under a price war with market demand growth. This model has two players: one is an R-type player and the other is a TFT-type player. Each player has two strategies to choose from: a preemption strategy and a “wait” strategy. Our results indicate that: (i) if the probability that the opponent is an R-type (TFT-type) player is high, then the time when the opponent adopts a preemption strategy will be early (late); (ii) Market demand growth is an incentive for cooperation among firms; (iii) if the market demand growth rate is high, then the R-type player will not have an evolutionary advantage. We use the competition between cell phone manufacturing firms Nokia and Motorola in China as an example. When Nokia is an R-type player and adopts a preemption strategy, Motorola should preferably use a preemption strategy rather than a “wait” strategy. However, as a TFT-type player, this will benefit Motorola under the situation of market demand growth. 相似文献
43.
Wei-Chun Tseng 《Ecological Economics》2008,65(2):282-291
The purpose of this study is to estimate the value of the potential economic impact of climate change on the Taiwan trout (also referred to as Oncorhynchus masou formosanus), an endangered species that only lives in high mountain stream sections in which the water temperature is lower. A two-stage approach is adopted to estimate the value of the change in the Taiwan trout stock due to a change in climate. The first stage involves establishing the relationship between the Taiwan trout stock and climate change, while the second stage involves estimating the non-market value of the change in the Taiwan trout population using the double bound model associated with the contingent valuation method (CVM). Our results indicate that the total Taiwan trout population will decline from 1612 to 974, 560, and 146 if precipitation in Taiwan increases by 0.6 mm/day, while the temperature increases by 0.9 °C, 1.8 °C, and 2.7 °C, respectively. The mean willingness to pay per person per year to avoid a change in the trout stock caused by climate change is found to be US$16.22, US$25.72, and US$33.60, respectively. 相似文献
44.
Greeks are the price sensitivities of financial derivatives and are essential for pricing, speculation, risk management, and model calibration. Although the pathwise method has been popular for calculating them, its applicability is problematic when the integrand is discontinuous. To tackle this problem, this paper defines and derives the parameter derivative of a discontinuous integrand of certain functional forms with respect to the parameter of interest. The parameter derivative is such that its integration equals the differentiation of the integration of the aforesaid discontinuous integrand with respect to that parameter. As a result, unbiased Greek formulas for a very broad class of payoff functions and models can be systematically derived. This new method is applied to the Greeks of (1) Asian options under two popular Lévy processes, i.e. Merton's jump-diffusion model and the variance-gamma process, and (2) collateralized debt obligations under the Gaussian copula model. Our Greeks outperform the finite-difference and likelihood ratio methods in terms of accuracy, variance, and computation time. 相似文献
45.
46.
Fu-Min Tseng Barbara McPake Ijeoma Edoka 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2020,88(1):21-39
The armed conflict in Northern Uganda led to a large number of internally displaced persons (IDPs). After the government announced the declaration of free movement on 30 October 2006, a large number of IDPs left camps. Transition from camp life to post-camp life has important implications for population well-being. This paper uses the Ugandan National Household Survey conducted in 2005-2006 and 2009-2010 and a difference-in-differences method to estimate changes in IDPs' well-being measured by self-reported heath as well as household food consumption. We do not find a significant effect of leaving camps on self-reported illness and household food consumption but we find a significant effect on the choice of healthcare providers utilised. The postcamp effect was estimated to increase the use of non-free health providers, an effect composed of more visits to informal providers and greater choice of formal private providers, when formal providers are utilised. Those findings shed light on policy-relevant issues in the areas of land rights, recovery of public health systems and gender inequalities in well-being. 相似文献
47.
A bstract . This article studies the evolution of the economic man ( Homo economicus ) from its original conception until the current day. By analyzing the discourse of economic articles, we provide a chronological account of the economic man's intellectual and philosophical development as it evolved from what we term the philosophical age to the neoclassical age and finally to the strategic age. The article then shows how the economic man in the strategic age is slowly finding convergence with the sociological man ( Homo sociologicus ). A reconciliation of the two sapiens is difficult. However, recent papers on behavioral and experimental economics provide insights into a possible reconciliation. Our study argues that the purpose of the sociological man is to identify who he is, how he interacts with people within a society, and the antecedents to such behaviors. Homo economicus, however, has no overarching philosophical assumptions on what he values. The objectives of each discipline are different and, once one is mapped onto the other, it is unclear if there is truly any tension between them. 相似文献
48.
The contribution of the study is threefold. First, the paper proposes a new empirically testable definition for a safe haven and a hedge from the viewpoint of extreme and regular dependences measured by a modern statistical tool of copulas. Second, this paper investigates the extreme and regular dependences between the Chinese and the G7 stock markets, using a mixture copula specification, and the results reveal that the Chinese stock market has been not only a hedge but also a safe haven for the G7 stock markets all these years. Finally, this study suggests that the Chinese stock market is the target market for global stock fund managers and international investors, who are seeking a hedge or a safe haven for their portfolios, under turbulence. 相似文献
49.
Chih-Yung Tsai Ming-Tzong Wang Hsiao-Ting Tseng 《Journal of Travel & Tourism Marketing》2013,30(6):824-836
In this study, we investigated whether tourists view attractive tour guides as more competent, humorous tour guides as more approachable, and experienced tour guides as more professional, and whether these three factors influence the effectiveness of tour guide interpretation. The results indicated that physical attractiveness and humor had additive effects on interpretation effectiveness when combined. Although some tour guides were not physically attractive, experience provided an additive effect on interpretation effectiveness. Thus, we recommend discarding stereotypes regarding physical attractiveness and improving education and training in humor for tour guides. Experienced tour guides wearing appropriate attire also increases interpretation effectiveness. 相似文献
50.
This paper adopts an institutional theory and explores the impact of institutional pressures on mimetic isomorphism in merger and acquisition (M&A) activities. It uses 117 M&A announcements and adopts a logistic regression model to construct a probability model for mimetic isomorphism. This study finds that a firm's own M&A experiences and the frequency of M&A deals are positively correlated with the likelihood that a firm will complete its M&A deal. This paper also utilizes an event study methodology to estimate the excess return around M&A announcements as a proxy for the M&A performance and adopts the OLS regression model to analyse the relation between the imitation and M&A performances. There is a positive relation between the frequency of M&A activities and M&A performances, and a negative relation between a firm's own M&A experiences and M&A performances. 相似文献