Forecast of realized covariance matrix based on asymptotic distribution of the LU decomposition with an application for balancing minimum variance portfolio

We derive the asymptotic distribution for the LU decomposition, that is, the Cholesky decomposition, of realized covariance matrix. Distributional properties are combined with an existing generalized heterogeneous autoregressive (GHAR) method for forecasting realized covariance matrix, which will be referred to as a generalized HARQ (GHARQ) method. An out-of-sample forecast comparison of a real data set shows that the proposed GHARQ method outperforms other existing methods in terms of optimizing the variances of portfolios.     

Environmental Multi‐dimensionality and Staff Localization in Multinational Enterprises: The Case of Korean Firms

The person–environment fit theory posits that the term “environment” can be defined at different levels. This study delineates two environmental dimensions (strategic and organizational) and empirically examines the potential moderating effects of two strategic factors (intra‐ and inter‐regional diversification) on the relationship between two organizational factors (subsidiary ownership and host‐country experience) and MNE subsidiary staffing composition. The results indicate that strategic and organizational dimensions have impacts on subsidiary staffing composition. This study also finds that the interaction effects between strategic and organizational factors are significant only when there is congruence between demands from different environmental dimensions.     

Is the environment‐friendly factor attractive to customers when purchasing electric vehicles? Evidence from South Korea

In a bid to reduce greenhouse gas emissions, several countries worldwide are implementing policies to promote electric vehicles (EVs). However, contrary to expectations, the diffusion speed of EVs has been rather slow in South Korea. This study analyzes consumer preferences for the technological and environmental attributes of EVs and derives policy and environmental implications to promote market diffusion of EVs in South Korea. We conduct a choice‐based conjoint survey of 1,008 consumers in South Korea and estimate the consumer utility function using a mixed logit model considering consumer heterogeneity. Based on the consumer utility function, we analyze consumers' willingness‐to‐pay (WTP) for EV attributes such as driving range, charging method, charging time, autonomous driving function, carbon dioxide (CO₂) reduction rate, and purchase price. The results indicate that the current low acceptance of EVs is due to their relatively high price and lack of a battery charging technology that satisfies consumers' expectations of the charging method and time. One interesting finding is that Korean consumers have a relatively higher WTP for the CO₂ reduction rate of EVs than consumers in other countries; however, they do not consider CO₂ reduction over other technological attributes when choosing EVs. This implies that the rate of CO₂ reduction of EVs is not an important factor for South Korean consumers when buying EVs. We also calculate the effect of CO₂ reduction with the market penetration of EVs and find that CO₂ reduction through the diffusion of EVs depends on the country's electricity generation mix.     

Time Orientation in Languages and Tax Avoidance

Journal of Business Ethics - Studies suggest that when a language requires grammatical marking of future events, speakers prefer immediate payoffs and engage in less future-oriented behavior. If...     

Ethical Standards and Ideology Among Korean Public Relations Practitioners

The purpose of this paper is to investigate the Korean public relations practitioners' perceptions toward ethical issues, individual practices, and ethical standards in the context of ethical ideology. The survey was conducted with the Korean public relations practitioners. A 2 (Relativism: High/Low) × 2 (Idealism: High/Low) factorial design was devised for the analysis.The MANOVA results showed that ethical ideology (idealism and relativism) had significant effects on ethical decision-making. Idealistic ideology had a main effect on ethical issues, individual practices, and ethical standards. However, relativistic ideology only affected the decision-making process related to ethical issues. No interaction effects were detected. This study indicated that the individual's ethical ideology could be an important variable in explaining the outcomes of the individual's ethical decision-making among Korean public relations practitioners.     

Access (Not) Denied: The Impact of Financial, Human, and Cultural Capital on Entrepreneurial Entryin the United States

Entrepreneurship contributes to business dynamics in all economies, and the individual benefits of starting a business are clear. Nonetheless, access to business start-ups may not be available to all people because of resource constraints. Using a unique new data set for the United States, we examine the relative importance of three forms of resources in pursuing start-up ventures: financial, human, and cultural capital. Our analysis of the Panel Study of Entrepreneurial Dynamics shows that neither financial nor cultural capital resources are necessary conditions for entrepreneurial entry. By contrast, potential entrepreneurs gain significant advantages if they possess high levels of human capital. Specifically, advanced education and managerial experience are significantly positively associated with entrepreneurial entry. Our findings suggest that attempts at entering entrepreneurship, at least in the short-term, may be increasing, as opportunities to acquire human capital are becoming more widespread.     

E-negotiation System Development: Using Negotiation Protocols to Manage Software Components

A major challenge in developing an e-negotiation system (ENS) is that the system should fit into the context which varies with negotiation cases. To mitigate context dependency, we propose to separate e-negotiation protocols from ENS and adopt a component-oriented approach. In this paper, we present a framework for e-negotiation protocols that implements this approach. The framework has been tested by developing several ENSs of which two had been tested in laboratory negotiation experiments with more than 100 participants.     

Statistical manipulability of social choice functions

We consider the proportion of profiles at which an anonymous neutral social choice function cannot be manipulated to any coalition's advantage. We fix the number of alternatives and consider the limit as the number of individuals goes to infinity, and assume that the limit of the fraction of all profiles in the domain is 1. We show that there is a continuous function on “profile vectors’ which gives the maximum probability of strategy-proofness, and that this is strictly between 0 and 1 for three alternatives. We also analyze a number of common social choice functions along these lines.     

Prospects and problems in modeling group decisions

This paper summarizes some of the major issues related to group decision modeling. We briefly review the existing work on group choice models in marketing and consumer research. We draw some generalizations about which models work well when and use those generalizations to provide guidelines for future research.