中国黄金期货保证金水平——基于非正态分布下的研究

中国目前静态的期货保证金水平只是一个经验数字,对价格波动并不敏感,大部分时间投资者资金被过度占用,当市场波动剧烈时又不能覆盖足够的风险。本文研究了基于非正态分布下黄金期货保证金水平,利用广义极值分布和广义帕累托分布来拟合尾部风险。结果显示:黄金期货存在尖峰厚尾现象,在考虑流动性风险后,现有的保证金水平有下调空间,应设定为4.38%,当风险加大时应提高到5.15%。     

Individual and group level antecedents and consequence of emotional labor of restaurant employees

The purposes of this study is two-fold: it examines antecedents and consequence of choosing an emotional labor strategy from the basis of the conservation of resource theory and it sub-divides preceding factors of emotional labor into an individual level (emotional intelligence [EI] and psychological contract) and a restaurant level (service under pressure). The research supported all the hypotheses proposed. Employees with high EI tend to select deep acting (DA), which is a driver of higher service performance. Service under pressure is a significant driver of employee surface acting (SA), which leads to poor service performance. In addition, DA enhances service performance, while SA impedes the effective delivery of services.     

Fashion's role in visualizing physical and psychological transformations in movies

Using visual narrative art, this study looks into the images of cinema costumes and investigates how the fashion and styles in the movie reflect both the main characters' psychological changes and their identity-forming processes. This study analyzes the transformative effect of fashion (movie costume), the development of individual characters, and social and other situational influences on the heroine in the movie Pretty Woman (1990). Pretty Woman's underlying theme is derivative from three classic fairy tales: Cinderella, Pygmalion, and Beauty and the Beast. Such fairy tales in movie dramas are archetypal enactments representative of deep emotional and physical transformations audiences wish to experience. Watching protagonists' wardrobe changes and emotional transformations enables viewers to identify/self-recognize the storylines and catharses in the movies and often to achieve virtually the same experiences and emotional highs—outcomes which are the modern equivalent to Aristotle's “proper pleasure.”     

A qualitative analysis of cross-cultural new media research: SNS use in Asia and the West

The purpose of this paper is to examine the use of social network sites (SNSs) from a qualitative methodological approach, looking at both Asian and Western countries. There has been growing interest in systematic analysis of the use of SNSs as such sites have become increasingly popular, global means of self-expression and forming social connections. However, most previous research into SNSs has been based in a single cultural context, with very few cross-cultural studies having been conducted. To address this lacuna, this study compares SNS users in Korea with those in the United States, specifically examining the nature of their SNS social relationships and their attitudes toward self-disclosure via SNS. Using semi-structured focus interviews, our research provides qualitative data-based analysis of the culture-specific effects that new social media has on communication. Our study demonstrates that a qualitative method is useful when examining the cultural differences that appear in online communication behavior designed to establish social relationships and to compose content, and further indicates that cultural differences may have considerable influence on SNS users’ attitudes towards SNSs and on their communication style. This study thus contributes to existing literature by advancing the research into a broader, inter-cultural sphere.     

Understanding Luxury Disposition

This article aims to provide a conceptual foundation for luxury disposition behavior in relation to luxury customer value and switching costs. The results of a study involving 398 luxury consumers in South Korea demonstrate the distinct typologies of luxury customer values and switching costs in cognitive (financial) and emotional (relational) dimensions as well as luxury disposition behavior as four different types. In addition, the conceptual framework on luxury disposition behavior reveals how luxury customers recognize customer value of luxury goods in perceiving switching costs upon disposition, which leads to different choices in disposition behavior. Theoretical and managerial implications are discussed for marketers or retailers in luxury fashion industry.     

An investigation of the mean reversion of hospitality stock prices towards their fundamental values: The case of Taiwan

This paper tested the mean reversion behavior of stock prices in the hospitality and other industry sectors towards their fundamental values, namely earnings per share (EPS) and dividend per share (DPS). Cointegration test results showed that DPS is not a good proxy of fundamental values of stock prices in all sectors, while EPS can serve as a good proxy of fundamental values of stock prices only in the hospitality and construction sectors. Further, although hospitality stock prices have diverged away from their fundamental values from time to time, there exists an error correction mechanism in the market, which adjusts hospitality stock prices to return to their fundamental values. We also found that hospitality stock prices driven by their EPS are due to less noise trading and small size in the hospitality industry. Lastly, empirical findings suggest that hospitality stock investors should pay more attention to the underlying performance of hospitality stocks in terms of their earnings per share.     

Creating New Relationships Through Tourism: A Qualitative Analysis of Tourist Motivations of Older Individuals in Japan

The current study is an exploration to examine older Japanese individuals’ motivations for travel. The study employed an open-ended survey and in-depth interviews in order to gain insight into the creation of human relationships through tourism. Our results show that tourism is perceived as offering extraordinary opportunities to meet new people, and to form and develop new relationships by Japanese older individuals, who experience fewer opportunities to interact with other people in their everyday lives compared to individuals in younger generations. In particular, distinct features of tourism settings, such as liminality and touristic communitas, allow older tourists to express themselves more freely by escaping from their existing relationships as well as from many social norms, hierarchies, and prohibitions.     

Composition of robust equity portfolios

Robust portfolios resolve the sensitivity issue identified as a concern in implementing mean–variance analysis. Because robust approaches are not widely used in practice due to a limited understanding regarding the portfolios constructed from these methods, we present an analysis of the composition of robust equity portfolios. We find that compared to the Markowitz mean–variance formulation, robust optimization formulations form portfolios that contain a fewer number of stocks, avoid large exposure to individual stocks, have higher portfolio beta, and show low correlation between weight and beta of the stocks composing the portfolio. These properties are also found for global minimum-variance portfolios.     

Detecting intra-national PPP model in China: A median-unbiased estimation approach

This paper studies the speed of price adjustments toward the intra-national PPP level within China based on half-life measurement. We calculate the point estimates of half-lives and the corresponding confidence intervals using median-unbiased estimation methods to correct for downward bias in least squares estimates. The point estimates of half-lives indicate that the speed of mean reversion toward convergence between region pairs is fast. A strong conclusion about the high speed of adjustments is, however, unwarranted in some regions where the confidence intervals for half-life estimates are much wider than others.