‘Double marginalization’ problems: evidence from the Korean fixed-to-mobile service market

In this paper, examination of the possibility of a ‘double marginalization’ problem existing in the Korean telecommunication industry is conducted and suggestions are made for the provision of a new scheme to eliminate this possibility by changing the pricing system for fixed-to-mobile calls. Based on five key economic characteristics in the Korean mobile market, a simple model for double marginalization in the telecommunication market is introduced. Evidence was found to suggest that a double marginalization problem is likely to exist within Korea's telecommunication industry as it is presently structured, and that this problem is further likely to have an adverse effect on the industry by inflating the price of fixed-to-mobile calls. Two alternatives are proposed to effectively remedy this double marginalization issue. It is also shown that prices of fixed-to-mobile calls could be lowered by changing the caller pays principle into a receiver pays principle.     

搭建先进创新平台 构筑特色服务体系

搭建先进创新平台、构筑特色服务体系是川大科技园自建园以来就坚持不懈的目标和任务.通过近十年的努力,由于先进创新平台与特色服务体系的搭建和构筑,川大科技园已在科技成果转化.高新技术企业孵化和创新创业人才培养三大中心任务上取得丰硕成果,现已成为国际化.开放化和具有持续创新能力的国家一流大学科技园区.     

Cognitive and affective approaches to employee participation: Integration of the two approaches

Numerous studies have examined cognitive and affective approaches to decision-making participation, but no study has attempted to integrate the two approaches. This is the first empirical study to apply the two approaches to financial participation. To integrate the two approaches, this study investigated the applicability of the two approaches to decision-making and financial participation as well as the relationship between two essential variables in each approach: information sharing and organizational commitment. The proposed hypotheses were tested by structural equation models using the Workplace Employment Relations Survey, which was conducted in Great Britain. The findings revealed that self-managing teams and group incentives were positively related to information sharing, which in turn were positively associated with organizational commitment and perceived company performance. Cross-cultural implications are discussed.     

Investment opportunities and dividend omissions

This study examines the market's reaction to dividend omission announcements and finds that if dividends are skipped to preserve cash for good investments, investors do not necessarily regard the omission as negative information. Markets penalize firms for dividend omissions only in the absence of a good stream of investments. In addition, the positive relation between investment opportunity and abnormal stock returns around the announcements is stronger when the level of information asymmetry between management and the rest of the market participants is low. Additional tests reveal that good omitters overcome underperformance faster in the post period. Overall, the results suggest that financial markets interpret differently the information conveyed in the announcement of dividend omission depending on the firm's future prospects.     

Deriving joint space positioning maps from consumer preference ratings

Joint space multidimensional scaling maps are often utilized for positioning analyses and are estimated on survey samples of consumer preferences, choices, considerations, or intentions so as to provide a concise spatial depiction of the competitive landscape including relevant dimensions or attributes, competing brands, and consumers in the same joint space representation. Care has to be given concerning the underlying scale properties of such survey data so as not to distort the resulting joint space positioning map. We present a new joint space multidimensional scaling procedure for positioning analyses for displaying the structure in such survey data when such common ordered successive category measurement scales such as Likert, Edwards, semantic differential, etc., are employed. We present the technical details of this stochastic ordered preference multidimensional scaling vector model as well as the maximum likelihood estimation-based algorithm devised for parameter estimation. Favorable comparisons are made with several existent multidimensional scaling methods in representing the internal structure for such data in marketing positioning studies. An actual commercial positioning application concerning large sports utility vehicles consideration to buy judgments is presented with predictive validation comparisons with other multidimensional scaling joint space procedures.     

Measuring living standards from the lowest: Height of the male Hangryu deceased in colonial Korea

The living standards in Korea during the colonial period (1910–1945) have been debated for a long time. We explored this problem using the height of the Hangryu deceased, a dead person who did not have any acquaintances to claim the body. We found that the height of male Hangryu deceased, ages 25 to 30, increased by 2.2 cm during the colonial period. This result is consistent with recent quantitative studies measuring income levels or demographic information. However, questions such as when this growth in height started and what initiated this pattern need further investigation.     

Agriculture–nutrition linkages with heterogeneous,unobserved returns and costs: Insights from Tajikistan

Agriculture–nutrition linkages (ANLs) have been increasingly investigated in the literature. However, nutritional returns and costs of household agricultural production practices (APPs) in semisubsistence settings are poorly understood. We fill these knowledge gaps using pooled cross-section data sets in Tajikistan, where semisubsistence farming and undernutrition coexist despite relatively good agricultural infrastructure and education systems. Agricultural diversification, yield enhancement, production expansion are positively associated with various nutritional outcomes, particularly in areas with poor food market access. Decomposition exercises suggest that nutritional returns and costs of these APPs vary across households, and the adoption of APPs is driven by the expected nutritional returns. In Tajikistan, improving nutrition through household ANLs requires growing the smallholder agricultural sector in multiple dimensions, including diversification, intensification, and expansion, while also understanding better the pathways of ANLs and addressing bottlenecks at appropriate stages of such pathways.     

Do socially responsible activities help hotels and casinos achieve their financial goals?

While the concept of corporate social responsibility (CSR) has gained much attention and is currently practiced by many companies, it has yet to be empirically examined in the context of hotels and casinos, especially in regard to the potential effects of CSR on firm value and performance. As the findings on the relationship between CSR and financial performance have been inconclusive and this relationship has been found to differ among industries, this study examines the relationship between CSR and firm value and profitability for hotels and casinos. Results of the Durbin–Wu–Hausman (DWH) test and a subsequent two-stage least square (2SLS) method show that hotel companies’ CSR has a simultaneous and positive relationship with financial performance. For casino companies, however, results show that CSR has no simultaneous or particular effect on financial performance. Findings suggest that hotel companies can confidently and strategically increase CSR investment to enhance both short-term (profitability) and long-term performance (firm value). Casino companies need to carefully examine the effects of CSR on financial performance, when making CSR-related decisions.