‘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.     

Microstructure-based manipulation: Strategic behavior and performance of spoofing traders

We examine how investors strategically spoof the stock market by placing orders with little chance of being executed, but which mislead other traders into thinking there is an imbalance in the order book. Using the complete intraday order and trade data of the Korea Exchange (KRX) in a custom data set identifying individual accounts, we find that investors strategically placed spoofing orders which, given the KRX's order-disclosure rule at the time, created the impression of a substantial order book imbalance, with the intent to manipulate subsequent prices. This manipulation, which made use of specific features of the market microstructure, differs from previously studied forms of manipulation based on information or transactions. Roughly half of the spoofing orders were placed in conjunction with day trading. Stocks targeted for manipulation had higher return volatility, lower market capitalization, lower price level, and lower managerial transparency. We also find that spoofing traders achieved substantial extra profits. The frequency of spoofing orders decreased drastically after the KRX altered its order-disclosure rule.     

The Influence of Plan Demographics on Contribution Behavior of 401(k) Participants

This article examines the influence of plan demographics, which is defined as the salary and tenure composition of a plan, on contribution behavior of 401(k) participants. Results using a large sample of 401(k) plans show that plan demographics influence participant contribution rates directly or through interaction with individual demographic characteristics. A participant's contribution rate can be varied by 1.6–3.0 percentage points for each age between 25 and 64, depending on what plan demographics she is exposed to. In addition, for the decision to contribute the maximum allowed amount, plan demographics significantly interact with individual demographic characteristics.     

Parent country nationals or local nationals for executive positions in foreign affiliates: An empirical study of Japanese affiliates in Korea

This study examines how the host country experience of Japanese multinational corporations (MNCs) affects their staffing policies for executive manager positions at foreign affiliates. Hypotheses on executive staffing policies for foreign affiliates are tested using survey data collected from 103 Japanese affiliates in Korea. Findings show that the level of global integration and the degree of centralization of decision-making positively affect an assignment of parent country nationals as executive managers of foreign affiliates. We further find that foreign affiliates’ experience in a host country moderates the effects of both global integration and centralization on staffing decisions for the affiliates.

3D simulation technology as an effective instructional tool for enhancing spatial visualization skills in apparel design

The purpose of this study is to explore the effectiveness of 3D simulation technology for enhancing spatial visualization skills in apparel design education and further to suggest an innovative teaching approach using the technology. Apparel design majors in an introductory patternmaking course, at a large Midwestern University in the United States, participated in this study. Three different teaching methods (lecture, 3D simulation instruments, and paper patternmaking) were employed in consecutive instructional phases, within a single day. A short questionnaire devised to assess students’ visualization abilities and overall evaluation on the three different teaching methods was administered to the students after each of the three phases. Overall, students’ abilities to visualize 2D patterns onto a human body were improved by all three teaching methods. The 3D simulation instruments anchored positive effects of training on spatial visualization abilities between lecture and paper patternmaking practices. The results affirm that 3D simulation technology has positive potential as an efficient instructional tool for improving students’ visualization skills in apparel design.     

Corroborating social media echelon in cancer research

Worldwide medical facilities differ, and for this reason, the causes of death can vary. Cancer is considered the second leading cause of death after heart disease worldwide, and the same causes of death are observed in the United States (US). Therefore, the purposes of this study are to explore worldwide research levels in the field of cancer and the social collaboration of researchers and institutions in this field. This article examines the structural patterns of international co-authors and co-institutions in science citation index papers in cancer research. The study uses measures from the social network analysis method, including degree centrality, betweenness centrality, eigenvector centrality, and effectiveness, to investigate the effects of social networks in the area of cancer research. Empirical analysis results identify the US is the most central country, followed by Germany, Italy, France, and China, in terms of co-authored networks in this research field. Institutional analysis results indicate that the University of Milan is at the top in terms of degree centrality. The Gustave Roussy Cancer Campus in France and German University of Düsseldorf occupy the second and fourth positions, respectively. The University of California in Los Angeles and Harvard University, both in the US, are at third and fifth positions, respectively.     

Policy Uncertainty and the Dual Role of Corporate Political Strategies

Firms use active political strategies not only to mitigate uncertainty emanating from legislative activity, but also to enhance their growth opportunities. We find that a firm's systematic risk (beta) can be hedged away by employing various political strategies involving the presence of former politicians on corporate boards of directors, contributions to political campaigns, and corporate lobbying activities. The hedging effect is greater when firms operate in more uncertain industries. In addition, active political strategies are associated with greater firm heterogeneity and make real options more value relevant as potential drivers of competitive advantages in uncertain environments.     

LEGAL ENVIRONMENT,INTERNALIZATION, AND U.S. ACQUIRER GAINS IN FOREIGN TAKEOVERS

In examining takeovers of foreign targets by U.S. firms, we investigate the effect of the target country's legal environment on acquiring firm value. Our results indicate that acquirers of target firms located in civil law countries experience significant positive abnormal returns, especially when the acquirer possesses a high level of intangibles. Furthermore, we find that acquirers with high levels of intangibles are more likely to acquire target firms in civil law countries. These findings suggest that the transfer of intangibles overseas provides relatively larger efficiency benefits for multinational corporations in cases where the alternative, contracting in external markets, is more difficult.