Byung-Jin Kwon

Strong demands for accurate long-range 6-DOF motion sensors have been arising for the purposes of navigation and object tracking in maritime transportation. Up to now, high-end sensors such as a differential global positioning system, laser tracker, and motion-capture camera have been utilized for long-distance sensing in spite of their high cost. In this paper, we developed a long-range motion-sensing system with the combination of low-cost sensors including infrared markers, three 1-D laser se

The Sarbanes–Oxley Act of 2002 (SOX) mandates that all listed firms disclose whether they have a financial expert on the audit committee, highlighting the committee’s expertise. However, some argue that non-accounting financial experts, compared to accounting financial experts, are not sufficient to ensure audit committee effectiveness because the former lack accounting knowledge. Accounting experts on audit committees may require higher audit efforts, while auditors may assess audit committees

This study examines how the equity compensation of chief executive officers (CEO) and that of outside directors affect management earnings forecasts (MFs) and the relationship between these two positions in terms of compensation. Our evidence reveals that CEO (director) equity compensation is positively associated with MF likelihood, frequency, and accuracy when director (CEO) equity compensation is not high. However, an increase in director (CEO) equity compensation is not effective in improvin

We examine whether outside directorships of chief executive officer/chief financial officer (CEO/CFO) and resulting network ties to auditors affect auditor selection decisions and subsequent audit quality. The network ties arise when the CEO/CFO of a firm (home firm) serves as an outside director of another firm that hires an auditor (connected auditor). Using a sample of firms that switch auditors in the post-Sarbanes-Oxley Act period, we find that home firms are more likely to appoint connecte

We examine whether the composition of top management with General Counsel (GC) affects properties of management earnings forecasts disclosures. After controlling for corporate governance and litigation risk, we find that firms with a GC in top management are more likely to issue forecasts, particularly bad news forecasts, than other firms. Further, their forecasts are less optimistic and more accurate than those issued by others. Consistently, the stock price reaction to their forecast news is s

According to our data, 38.5% of S&P 1500 firms have at least one professor on their boards. Given the lack of research examining the roles and effects of academic faculty as members of boards of directors (professor-directors) on corporate outcomes, this study investigates whether firms with professor-directors are more likely to exhibit higher corporate social responsibility (CSR) performance ratings. Results indicate that firms with professor-directors do exhibit higher CSR performance ratings

The value of executive pension plans depends significantly on the incidence of bankruptcy because executive pension plans have characteristics similar to unsecured debt. These unique characteristics lead us to investigate whether managers change their firms’ accounting policy to protect their pension plans when their firms face imminent default risk. Identifying a firm’s default risk with various proxies, we find that managers with executive pension plans are more likely to engage in income-incr

The construction of high-rise buildings necessitates efficient and reliable material transport systems to improve productivity and reduce labor-intensive tasks. Traditional methods such as cranes and elevators are widely used but are often constrained by high costs and spatial limitations. Manipulator-based robotic systems have been explored as alternatives; however, they require complex control algorithms and struggle with confined construction environments. To address these challenges, we prop

The traction control system (TCS) comprises a slip control subsystem and a directional stability subsystem. The slip controller can enhance the traction performance by maintaining the slip ratio within an appropriate range. Additional information about the lateral behaviour of the vehicle is necessary to enhance the directional stability during cornering or lane change on slippery roads. With an assumption of slowly varying steering input, a new method to measure the mixture of yaw rate and late