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11.
Taejin Park Ri Choe Young Hun Kim Kwang Ryel Ryu 《International Journal of Production Economics》2011,133(1):385-392
The decision for good stacking positions for incoming containers in an automated container terminal is an important operational problem because it affects the productivity not only for stacking but also for later retrieval. This paper proposes an online search algorithm which dynamically adjusts and optimizes a stacking policy by continuously generating variants of stacking policies and evaluating them while they are actually being applied for determining the stacking positions. Simulation experiments show that the proposed algorithm is effective in enhancing the operational productivity, while other offline optimization methods are computationally infeasible to be applied to this problem. 相似文献
12.
The Yonmenkaigi System Method: An Implementation-Oriented Group Decision Support Approach 总被引:1,自引:0,他引:1
Norio Okada Jong-Il Na Liping Fang Atsushi Teratani 《Group Decision and Negotiation》2013,22(1):53-67
The Yonmenkaigi System Method (YSM) is presented as a participatory method to support group decision making. It is composed of four main steps: conducting a SWOT analysis, completing the Yonmenkaigi chart, debating, and presenting the group’s action plan. The YSM is an implementation and collaboration-oriented approach that incorporates the synergistic process of mutual learning, decision making and capacity building. It fosters small and modest breakthrough and/or innovative strategy development. The YSM addresses the issues of resource management and mobilization as well as effective involvement and commitment by participants and provides a strategic communication platform for participants. A case study for developing a disaster reduction action plan, carried out with a local community organization in the City of Kyoto, Japan, is used to demonstrate the characteristics of the YSM. 相似文献
13.
Focusing on the individual heterogeneity, this article examines the causes of an individual’s employment status choice and the extent of state dependence in the Korean labour market. We estimate a dynamic multinomial logit model using the panel data drawn from the first to fifteenth wave of the Korean Labour and Income Panel Study. The results suggest the presence of state dependence. Individual characteristics and growth background have a significant effect on the choice of employment status. Gender is still an important employment factor; males are more likely to be employed and this gender effect is highest for regular employment (RE). One’s educational attainment and age operate in opposite directions. That is, educational attainment (age) has a positive (negative) impact on the choice of a regular job and a negative (positive) impact on the choice of a non-regular job. Contrary to our expectations, a wealthy family background reduces the probability of individuals being wage workers, and raises the probability of them being unemployed. The barriers to RE are greater than for non-regular employment. These findings are of great importance for designing policies to effectively address unemployment and labour informality problems in Korea. 相似文献
14.
Jong-Il Choe 《Asian Economic Journal》2000,14(3):301-315
We analyse the effects of both ownership and location advantages on the size of foreign direct investment, by combining industrial organization and location theory approaches. The estimated results employing a truncated distribution model show that the parent company's managerial resources and the external economies in a located region between them determine the FDI size of Japanese electrical machinery and appliances firms. This result suggests that empirical studies, applying only the industrial organization theory approach, need to be complemented by the location theory approach. 相似文献
15.
This study examines whether the disposition effect (DE), i.e., the tendency of investors to ride losses and realize gains, exists in the Korean stock index futures market. Using a unique database, we find strong evidence for the DE and explain this in terms of investor characteristics. We also investigate the effect that the disposition bias has on investment performance. There are four main findings. First, individual investors are much more susceptible to the DE than institutional and foreign investors. Second, sophistication and trading experience tend to reduce the DE. Third, the DE is stronger in long positions than in short positions. Finally, there is a negative relationship between the DE and investment performance. This result is consistent with Odean (1998, Journal of Finance, 53, 1775–1798), but contrasts with Locke and Mann (2005, Journal of Financial Economics, 76, 401–444) who find no evidence of any contemporaneous measurable costs associated with the DE. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:496–522, 2009 相似文献
16.
Yong Shik Choe 《Asia Pacific Journal of Management》1994,11(2):187-203
The determination of the level of corporate borrowing and the choice of debt maturity are the two most important concerns in the management of capital structure. In this study, we examine analytically and empirically the impact of debt maturity changes on the expected returns of common stocks. Using the US stock market data and financial statement data, we examine the cross-sectional relation between expected returns and financial leverage ratios. We find reliable evidence that common stock expected returns are positively related to the extent of short-term debt financing. The positive relation is significant even after we control for systematic risk, total debt ratio and firm size. The results suggest that an increase in short-term debt which displaces the same amount of long-term debt increases the expected returns of common stocks, possibly because the substitution transfers risk from long-term debtholders to shareholders.The author is from the Department of Business Administration, Han Sung University, Seoul, Korea. This paper is based on my dissertation submitted to the School of Management, SUNY at Buffalo (1991). I would like to thank my dissertation committee, Dosoung Choi, Frank Jen and Michael Rozeff, for their invaluable comments throughout the dissertation research. 相似文献
17.
18.
This article examines the empirical relation between chief executive officer (CEO) turnover and earnings management in Korea using a sample of 403 CEO turnovers and 806 non‐turnover control firms during the period 2001–2010. We classify CEO turnovers into four types depending on whether the departure of the outgoing CEO is peaceful or forced and whether the incoming CEO is promoted from within or recruited from outside the firm. We measure earnings management by both discretionary accruals and real activities management. We also control for the endogeneity of CEO turnover and a potential selection bias using 2SLS and Heckman's two‐stage approach. After controlling for corporate financial performance and governance structure, we find upward earnings management by the departing CEO only when the departure is forced and the new CEO is an insider. In this case, the new CEO also engages in downward earnings management using both discretionary accruals and real activities management. We also find some evidence that the new CEO recruited from outside the firm manages discretionary accruals upward following the peaceful departure of his predecessor. In all other types of CEO turnover, we do not find evidence of significant earnings management by either CEO. 相似文献
19.
Although rugby union, a full-contact sport, is usually considered as a leisure activity in the domain of young people, the motivations and effects of rugby union played by middle-aged men are not clear. The purpose of this study is to examine the motivations and participation effects of middle-aged American men participating in rugby in the USA. This study concentrates on rugby union (hereinafter referred to as rugby) as opposed to rugby league. Data were collected through in-depth interviews during an international amateur masters’ tournament. A total of 14 amateur rugby players with ages ranging from 35 to 52 were interviewed. This study found that the motivations for rugby participation were making friends, the love of rugby and self-actualisation. The participation effects of rugby were a long-term commitment, skill improvement and cultural awareness. Moreover, these findings on the motivations and effects of rugby help support the conclusion that this sport among the middle-aged group can be considered as a serious leisure activity. 相似文献
20.
While many existing studies report that corporate diversification destroys shareholder value, several recent studies challenge these findings. Schoar [Schoar, A. (2002). Effects of corporate diversification on productivity. The Journal of Finance, 57, 2379?2403] finds that plants in conglomerates are more productive than those in comparable single-segment firms, although conglomerates are traded at discounts. Villalonga [Villalonga, B. (2004a). Diversification discount or premium? New evidence from the business information tracking services. The Journal of Finance, 59, 479–506; Villalonga, B. (2004b). Does diversification cause the “diversification discount”. Financial Management, 33, 5?27] employs a more comprehensive database and statistical techniques than those used in the prior studies, and shows that there is a diversification premium, rather than discount. This paper develops a model that highlights the costs and benefits of corporate diversification. The diversified firm trades off the benefits of more efficient resource allocation through its internal capital market against the costs of information rents to division managers, which are necessary for effective workings of the internal capital market. We provide an argument supporting Schoar's findings, and identify conditions under which there can be a diversification discount or a premium. 相似文献