Revealing global hot spots of technological disasters: 1900–2013

Technological disasters can happen in any country in the world and cause human fatalities, injuries, and economic damages, among other physical and social consequences. As the world adopts more technologies, becomes further industrialized, continues faster urbanization, and has larger and more concentrated population, the occurrences and impacts of technological disasters are likely to be more frequent and severe and call for more scholarly research. However, there is a lack of good models for reliable technological risk analysis, which is the foundation for effective preparation for, sound mitigation of, and quick recovery from technological disasters. This research develops an expected risk analysis model, including a base sub-model and a location quotient sub-model, for nearly 200 countries of the world, using the technological disasters recorded in the EM-DAT database for the period 1900–2013. The sub-models are based on country-level risk impacts in terms of expected fatalities, injuries, people affected, and economic losses, their standard deviations, ranges, and corresponding country percentages and ranks. The sub-models are validated using correlations and scatter plots for the observed and expected risk impacts. The results show that the sub-models perform well by yielding consistent expected risks and related measures, indicating that the expected risk analysis model is a reasonably good alternative to existing risk analysis models.     

Consumers' Needs for Public Education and Corporate Participation Regarding Child Internet Addiction: Based on the Risk Perception Attitude Framework

Internet addiction, which causes physical, behavioral, and psychological problems, especially in children, is becoming an increasingly common disorder in contemporary society. This study investigated the needs of consumers for public education and corporate participation in South Korea to prevent or reduce the risk to young children becoming addicted to the Internet, and classified consumers into four groups according to their risk perception and efficacy beliefs using the Risk Perception Attitude framework. The expressed consumer need for public education was higher for groups with low efficacy beliefs, whereas the expressed need for corporate participation was higher for groups with high efficacy beliefs. These results indicate that consumers who perceive the risk as out of their control feel a higher need for a public approach, while those with high efficacy beliefs feel a higher need for corporate efforts.     

Imperfect information and labor market bias against small and medium-sized enterprises: a Korean case

We examine the labor market’s bias against small and medium-sized enterprises focusing on the Seoul Digital Industrial Complex case. We adopt Heckman’s approach to control selection bias, and use primary data from questionnaire surveys conducted at both firm and employee levels. We find that conventional firm-specific factors, such as wages, fringe benefits, and weekly work hours, primarily explain the labor market bias, but imperfect information is also positively associated with the bias. For example, a firm’s inadequate ability to identify a pool of potential employee candidates or to provide them comprehensive firm- or job-specific information tends to worsen labor shortages, and an employee’s ex-ante incomplete knowledge of on-the-job training or education opportunities tends to increase ex-post turnover intentions. Our results suggest that reducing the market bias requires improving imperfect information as well as conventional firm-specific conditions.     

Managerial Career Concerns and Risk Management

We present a dynamic model of corporate risk management and managerial career concerns. We show that managers with low (high) initial reputation have high (low) career concerns about keeping their jobs and receiving all future income. These managers are more likely to speculate (hedge) early in their careers. In the later stage of their careers when managers have less career concerns, there is no speculative motive for self interested managers. On the other hand, highly reputable managers have minimal career concerns and they engage in neither hedging nor speculation early in their careers, but they may choose to hedge after poor early performance.     

International Effects of Stock Market Dispersion

We study the extent to which stock market dispersion is related to unemployment and output growth for 16 countries over 20 years. Using panel vector-auto-regressions and panel dynamic regressions, we find increases in stock market dispersion across industries to induce future increases in unemployment and future decreases in industrial production (IP) growth. Moreover, the responses of unemployment and IP growth following a positive shock to stock market dispersion are persistent and are robust to various controls, sample periods, and estimation methods. Our article provides cross-country evidence in support of the hypothesis that shifts in demand across industries negatively affect employment.     

Capital Accumulation And Trade Policy:The Case Of Korea

This paper investigates whether there are any systematic links between Domestic savings and export growth in light of the Korean experience, beginning with the early 1960s when trade policy shifted from an inward to outward orientation. The paper also examines how domestic investment might have been affected by the trade reforms. The study reveals that the impressive growth of Korea's domestic savings over the 1960-95 period owes in no small part to the Trade reforms and the subsequent rapid growth of exports. Evidence also Suggests that the long-lasting investment boom experienced by Korea over the 1960–95 period was initiated and maintained to a significant degree by the trade reform of the 1960s and thereafter. [F43, E21].     

Estimating scale economies of the wireless telecommunications industry using EVA data

This paper proposes a new estimation method of total cost and average cost curves and applies it to the telecommunications industry. The method is more flexible and entails less hassle for data collection than traditional methods. The results show that the long-run average cost (LRAC) curve is downward sloping, revealing the presence of economies of scale in production. The two largest Korean mobile network operators are realizing full economies of scale, while the smallest operator is not. Finally, the paper recommends three policy alternatives that the Ministry of Information and Communication of Korea can draw on to increase efficiency in the Korean mobile telecommunications market.     

Financial statement comparability and audit efficiency: evidence from South Korea

In this study, we examine the effect of financial statement comparability on audit hours, which we use as a proxy for audit efficiency. We examine the hours worked by auditors in completing 2322 audits in Korea between 2006 and 2010. Audit efficiency can be determined by the total audit effort required to achieve a successful audit. Using a sample consisting of firms maintaining a certain level of audit quality, we investigate whether financial statement comparability reduces audit hours. We find that comparability is negatively associated with audit hours. In addition, we find that the effect of comparability on audit hours is attenuated for firms that are ‘highly followed’ by financial analysts. This study contributes to the literature by proposing a possible way to improve audit efficiency from a unique perspective. While prior studies show that a client’s inherent risk and control risk lower audit efficiency, the results of this study show that comparability between financial statements facilitates audit efficiency. Improvements in audit efficiency reduce the opportunity costs associated with audit effort and thereby enable auditors to spend more time and effort focusing on high-risk engagements. Comparability is one of four qualitative characteristics of accounting information included in accounting conceptual frameworks. Despite the importance of comparability, there is very little research on its benefits. This study makes a unique contribution by measuring audit effort using a large database of audit hours worked by auditors in Korean firms.     

The relative importance of factors that influence the break-even distance of intermodal freight transport systems

The break-even distance of an intermodal freight system is a crucial piece of information for shippers as they decide whether to choose a specific freight transport system. It is also important for policy makers who want to demonstrate to shippers that the intermodal system is substantially more beneficial over a certain distance and encourage shippers to use it. However, the break-even distance is highly dependent on market situations. In other words, it is not possible to estimate the definitive break-even distance that is generally applicable. To date, the literature has addressed factors, including costs and distances, that impact the break-even distance without considering the relative importance of each of these factors. This study attempts to address this gap in knowledge by evaluating the relative importance of geometric and cost factors. The former includes drayage distances (i.e., pre- and post-haulage by trucks), truck-only distance, rail distance, the shape of the market area, and the terminal location, while the latter includes the drayage truck rate, the long-distance truck rate, the rail rate, and the terminal handling rate. Finally, by developing a Monte Carlo-based simulation model, the relative importance can be evaluated. The key finding is that the geometric factors and terminal handling costs are not more significant than the transport costs (i.e., rail costs and long-distance trucking costs) in general. Specifically, to shorten the break-even distance, either reducing the rail rate or increasing the truck rate is the most effective strategy. A 1% change in these factors is almost seven times, three times, and twice as effective as a 1% change in the handling costs at terminals, rail distance, and drayage cost, respectively. Furthermore, neither the oval-shaped market area nor a terminal relocation attracts customers to intermodal systems in general. When two options are combined, the synergic effect is significant.