A network text analysis of published papers in service business, 2007–2017: research trends in the service sector

The service sector has become the most important part of the global economy. Thus, Service Business: An International Journal (SB) was launched in 2007 to deliver innovative studies that can provide resonating insights to researchers and practitioners in services. This study analyzed 311 articles published in SB during the past 10+ years (2007–2017) by conducting network text analysis (NTA). The published papers’ keywords link relations were analyzed to create network maps of research topics, ranging from traditional to emerging ideas of researchers. Influential research topics and their clusters were identified using centrality and community analyses. Research trends were identified for the first 5 years (Volume 1–5) and later years (Volume 6–11) separately through NTA. The results reveal interesting change in research topics over time. Common keywords of studies published in the first 5 years were: Service, Innovation, Customer, Strategy, Tourism, and Quality. The primary frequent keywords of articles published during 2012–2017 were: Customer, Quality, Satisfaction, Innovation, Mobile, and Technology. The results of the study shed valuable insights to the researchers and practitioners in the service sector. Applications of keyword network building and analysis methods provided in this study would be helpful to researchers who are interested in exploring trends of emerging new topics.     

What Caused the Korean Currency Crisis in 1997?*: Weak Fundamentals or Self‐fulfilling Expectations*

The present paper investigates which factor is primarily responsible for the sharp depreciation of the Korean won against the US dollar in 1997, using a bivariate vector autoregressive model of real and nominal exchange rates. In the present study, we directly identify the relative importance of fundamental and non‐fundamental factors from the raw data series on exchange rates. This approach is different from most previous studies on the Korean currency crisis, which use proxy variables to represent the two factors. The empirical results show that the collapse of the Korean currency in 1997 appears to be mostly a result of the weakened macroeconomic fundamentals of the economy with, to a limited extent, some non‐fundamental factors.     

On top responsiveness and strict core stability

Alcalde and Revilla [Journal of Mathematical Economics 40 (2004) 869–887] introduce a top responsiveness condition on players’ preferences in hedonic games and show that it guarantees the existence of a core stable partition. In the present note we strengthen this observation by proving that under top responsiveness even the strict core is non-empty.     

THE EFFECTS OF OVERPAYMENT AND FORM OF FINANCING ON BIDDER RETURNS IN MERGERS AND TENDER OFFERS

In this paper I examine the effects of overpayment and form of financing on bidding firms' stock returns and the determinants of the form of financing in mergers and tender offers. First, I find that in the 1980s potential overpayments to target shareholders and the form of financing are important for explaining cross-sectional differences in bidding firms' returns upon the announcement of mergers or tender offers. Second, I find that in the 1980s cash offers were likely to be chosen by cash-rich firms relative to their industry, and stock exchange offers were likely to be chosen by normal cash-generating firms relative to their industry. The latter finding is consistent with the pecking order hypothesis and casts doubt on recent signaling explanations of the form of financing.     

Food Security and Agricultural Protection in South Korea

South Korea has been pursuing food self-sufficiency using high tariffs and high administrative prices in key agricultural and food markets. Using a dual approach to trade and trade restrictiveness indices, we analyze the impact of these market distortions on welfare and trade volume. Then, we compute second-best distortions, which minimize the welfare cost of meeting observed levels of self-sufficiency and production. We rationalize these second-best distortions to what could be claimed as legitimate protection under a "food security" (FS) box in World Trade Organization (WTO) negotiations. FS-box protection is sensitive to changes in the definition and the extent of the FS objectives. We show that FS via production targets and reliance on imports would be more palatable to consumers and trade partners, while preserving income transfer to the farm sector.     

Tempered stable structural model in pricing credit spread and credit default swap

In this paper, we explore the features of a structural credit risk model wherein the firm value is driven by normal tempered stable (NTS) process belonging to the larger class of Lévy processes. For the purpose of comparability, the calibration to the term structure of a corporate bond credit spread is conducted under both NTS structural model and Merton structural model. We find that NTS structural model provides better fit for all credit ratings than Merton structural model. However, it is noticed that probabilities of default derived from the calibration of the term structure of a bond credit spread might be overestimated since the bond credit spread could contain non-default components such as illiquidity risk or asymmetric tax treatment. Hence, considering CDS spread as a reflection of the pure credit risk for the reference entity, we calibrate it in order to obtain more reasonable probability of default and obtain valid results in calibration of the market CDS spread with NTS structural model.     

Advertising and Investor Recognition of Banking Firms: Evidence from Taiwan

This study examines the effect of advertising expenditure on strengthening a firm’s intangible capital and firm value by attracting the public on the firm’s visibility and then investigates the role of advertising expenditures on a banking firm’s market value, liquidity, and breadth of ownership. The empirical results find that the advertising has a significantly positive effect on banking firm’s share value, liquidity, and institutional holdings. Consequently, this study concludes that advertising benefits banking firms through increased investor perceptions of such firms. In particular, the findings provide additional support for the home bias phenomena, in which investors prefer to invest in familiar stocks.     

A new look at ideals and practices of filial piety: The case of exemplary filial persons

The definition of filial piety has become a public issue in Korea because of the significant impact filial piety has on the welfare of the elderly as on the morality of the young. The study explored how filial piety is practiced in Korea. Compiled from three national institutions awarding filial piety prizes in Korea, stories about Korean adults who had exemplified filial piety during the recent two decades are analyzed using the content analysis method. As a resulf of this analysis, a set of eleven indicators of filial piety emerged, including respect for parents, filial sacrifice, etc. The fundamental value of filial piety is still under preservation even while its manifestation is changing in modem times. These indicators will be useful in understanding the concept of filial piety and constructing a measure that might be used to assess caring relationships between adult children and elderly parents.     

Pricing basket and Asian options under the jump‐diffusion process

This study derives approximate valuation formulas for basket options and Asian options under the jump‐diffusion process. To obtain an approximation for options prices under the jump‐diffusion process, we extend the Taylor expansion method developed by Ju N. ( 2002 ) under the diffusion process. We show that the Taylor expansion method, suggested in this study, provides better pricing performance as compared to log‐normal or four‐moment methods. The performance improvement using the Taylor expansion method increases as the time to maturity increases. In addition, our numerical analysis shows that jump effects become significant when the expected jump sizes take large negative values. © 2011 Wiley Periodicals, Inc. Jrl Fut Mark 31:830–854, 2011