Functional-coefficient models for nonstationary time series data

This paper studies functional coefficient regression models with nonstationary time series data, allowing also for stationary covariates. A local linear fitting scheme is developed to estimate the coefficient functions. The asymptotic distributions of the estimators are obtained, showing different convergence rates for the stationary and nonstationary covariates. A two-stage approach is proposed to achieve estimation optimality in the sense of minimizing the asymptotic mean squared error. When the coefficient function is a function of a nonstationary variable, the new findings are that the asymptotic bias of its nonparametric estimator is the same as the stationary covariate case but convergence rate differs, and further, the asymptotic distribution is a mixed normal, associated with the local time of a standard Brownian motion. The asymptotic behavior at boundaries is also investigated.     

Asymmetric Exchange Rates and Unofficial Exchange Rate Interventions: The Case of South Korea

Applying Milton Friedman's ‘plucking’ model of output fluctuations, we investigate the behavior of the Korean won/dollar exchange rate using a state-space model with Markov switching, which incorporates both symmetric and asymmetric shocks. We find that the Korean won/US dollar exchange rate rarely falls below its trend, but is plucked upward from time to time by transitory shocks. This asymmetry suggests that the monetary authority unofficially intervenes in the foreign exchange market to support its own target level from below. Further evidence from changes in reserve assets indirectly supports our finding.     

Is the Chinese Government’s Increase in Development Co-operation with Africa the Revival of Sinocentrism?

Over the past few decades, the rapid growth of China’s development co-operation with Africa has attracted worldwide attention. Some people assert that development co-operation in Africa has contributed to the general development of the continent; however, others, many of whom are scholars and Western politicians, dispute its influence on Africa and are suspicious of its real motives, noting its exploitation of natural resources and increasing market encroachment. This study will discuss the expansion of China’s development co-operation with African countries from the perspective of Sinocentrism, as there appears to be an absence of a superordinate concept or ideology that extensively encompasses and interconnects the diverse explications from existing studies. Henceforth, this research aims to contribute towards examining whether Sinocentrism could be a possible superordinate concept of existing studies. As such, it could be helpful in better understanding Chinese development co-operation in Africa, by examining China’s history and its recent path in Africa as well as its international relations.     

The effect of fair disclosure regulation on timeliness and informativeness of earnings announcements

This paper examines the effect of Korea’s fair disclosure regulation on the timeliness and informativeness of earnings announcements. The present regulation for Korean listed firms requires that if a company’s sales revenue, operating income (or loss) and net income (or loss) have changed by over 30% compared to the prior year, the firm must disclose this information through a preliminary financial report (PFR) even before the company is audited by external auditors. To analyze the effects of this policy, we first investigate the timeliness of preliminary financial report disclosures. We examine the extent to which Korean listed companies actually comply with the requirement for prompt notification of information concerning material changes in financial performance. Second, we investigate the informativeness of preliminary financial reports by analyzing differential stock market reactions to different timings of preliminary financial report disclosures. Our empirical results reveal that more than half of our sample firms release their preliminary financial reports after external audits are completed, thereby potentially invalidating the effectiveness of the regulation. In addition, we find that preliminary financial reports have information value only if they are disclosed prior to annual audit report dates. This finding supports the notion that timeliness increases the informativeness of preliminary financial report disclosure by curbing insiders’ ability to potentially profit from their information advantage.     

Using Twitter Data for Cruise Tourism Marketing and Research

The need to understand how social media affect the hospitality and tourism field has increased. This paper discusses and demonstrates social media analytics using Twitter data referring to cruise travel. This research also includes an in-depth analysis of tweets by three types of user groups: commercial, news/blogs, and private. The results show that not only were words related to travel, destination, industry, and emotion most frequently used in composing tweets, but celebrities, professional bloggers, cruise lines, and travel agencies actually led major subgroups on cruise topics on Twitter. Based on such findings, this study provides feasible marketing strategies.     

Cave Tourism: Tourists' Characteristics,Motivations to Visit,and the Segmentation of Their Behavior

Geotourism is one among many types of ecotourism or nature tourism. Cave tourism within geotourism has gained popularity in Korea. The study's objectives include cave tourists' characteristics, segmenting them according to motivation factors, and finally identifying who they are. The sample population for this research consisted of tourists who have visited the Hwansun Cave in Samchuk City. Among a total of 547 questionnaires distributed, 537 questionnaires were used for further data analyses. On the basis of cluster analysis using the motivation factors, cluster 1 was named an “escape-seeking group”, cluster 2 was termed a “knowledge- and novelty-seeking group”, cluster 3 was called a “novelty-seeking group” and cluster 4 was termed a “socialization group”. Differences in socio-demographic variables, beliefs about cave tourism resources, preferred cave tourism products, satisfaction with this tour, willingness to participate in another cave tour and belief in the value of cave tourism resources were found among the four clusters. The study's findings were expected to be helpful in understanding who they are.     

On inferring individual behaviour from market behaviour in a predetermined quantities model

This article develops the theoretical basis of individual behaviour recovered from market behaviour in a predetermined quantities model. As applied economists argue, an inverse demand system may be empirically sound within the framework of classical demand theory. However, it should not lead to the conclusion that the market responses for changes in quantity should be used to see welfare effects instead of the individual responses by price changes as far as the market is concerned. It shows theoretically and empirically how individual responses can be recovered from market responses in a predetermined quantities model. It suggests that the fundamental results of this article should be used on interpreting empirical results from the predetermined quantities models.     

Patterns and strategies of Foreign Direct Investment: the case of Japanese firms

This paper is to study globalization motives and strategies of Japanese manufacturing industries by analyzing the causes and patterns of foreign direct investment (FDI) of Japanese manufacturing firms. We use regression analysis to determine internally driving-out factors and externally-inducing factors. Japanese FDI strategy has gone through three different stages; from natural resource-seeking investment in the 1950s and 1960s to market-expansion investment in the 1970s and 1980s and to a combination of cost-reducing (low-cost labor-seeking) investment and market-penetrating investment in the 1990s. Our findings show that Japanese FDI in Asia and other developing countries tends to be in labor-intensive sectors where Japanese firms are losing their comparative advantages at home. The main motive for FDI into these regions is low-cost resource seeking. On the other hand, Japanese FDI in the US and Europe tends to be knowledge-intensive sectors where Japanese firms attempt to internalize transaction and information costs by globalizing its production. The main motive for FDI into these regions is market-seeking.     

Emerging Asian MNCs

Developed countries traditionally account for the lion's share of outward foreign direct investment (FDI) and multinational corporations (MNCs). More recently, however, developing countries are emerging as a significant source of outward FDI and globally influential MNCs. The central objective here is to analyze and compare the main issues facing emerging Asian MNCs today with the main issues which faced developed-country MNCs 30 years ago. Our basic hypothesis is that the two groups of MNCs significantly differ due to both exogenous and endogenous factors. Particularly important are differences in motivation and behaviour, ownership patterns, ownership-specific advantages and the institutional infrastructures of their home countries.