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Kyeongwoo Park,Hyein Chang /Hyein Chang,Jin Pyo Hong,Myung Hyun Kim,Sohee Park,Jin Young Jung,Dahae Kim,Bong-Jin Hahm,Ji Hyun An 대한신경정신의학회 2024 PSYCHIATRY INVESTIGATION Vol.21 No.2
Objective This study aimed to investigate the association between gaming time and problematic game use (PGU) within a large sample of Korean male gamers and to examine the potential moderating effects of loneliness, living alone, and household size.Methods This study employed data from 743 male gamers from the National Mental Health Survey 2021, a nationally representative survey of mental illness conducted in South Korea. Self-reported data on the average gaming time per day, severity of PGU, loneliness, living alone, and household size were used.Results Gaming time was positively associated with PGU and this relationship was significantly moderated by loneliness such that the positive effect of gaming time on PGU was greater when the levels of loneliness were high. The three-way interaction effect of gaming time, loneliness, and living alone was also significant, in that the moderating effect of loneliness on the relationship between gaming time and PGU was significant only in the living alone group. However, household size (i.e., number of housemates) did not moderate the interaction between gaming time and loneliness among gamers living with housemates.Conclusion These results suggest the importance of considering loneliness and living arrangements of male gamers, in addition to gaming time, in identifying and intervening with individuals at heightened risk of PGU.
위경우(Kyeongwoo Wee),권순원(Soonwon Kwon),설원식(Wonsik Sul) 한국고용노사관계학회 2009 産業關係硏究 Vol.19 No.4
본 연구는 전형적인 DB, DC형과 함께 가입자별 복수 퇴직연금제도와 캐쉬밸런스플랜(CBP)이 동시에 허용되어 있는 상황에서 각 퇴직연금제도가 근로자와 기업에 미치는 경제적 효과의 상호비교를 통해 근로자와 기업의 최적 퇴직연금제도 선택에 대해 살펴본다. 구체적으로 본 연구는 현실을 반영한 시뮬레이션 모형을 구축한 후 근로자의 속성과 기업의 특성을 나타내는 변수들을 달리하면서 근로자의 효용과 기업의 가치를 극대화할 수 있는 퇴직연금의 유형은 어떤 것인지 탐색한다. 분석 결과, 근로자의 입장에서 선호되는 퇴직연금제도는 DC, CBP인 반면, 기업의 입장에서 선호되는 퇴직연금제도는 CBP로 나타났다. 그 결과 근로자와 기업 모두에게 이득을 줄 수 있는 윈-윈 형태의 퇴직연금제도는 CBP로서, 이는 CBP가 근로자와 기업 사이의 갈등을 최소화하는 대안이 될 수 있음을 제시하고 있다. 한편 가입자별 복수 퇴직연금제도는 DB보다 근로자에게 유리한 것으로 나타났으나, 기업의 입장에서는 불리하여 동 제도의 채택 시 이해 상충의 여지가 있을 수 있음을 보여주고 있다. This paper examines the optimal choice of the retirement pension plans among the CBP, Multiple Retirement Pension Plan and traditional DB, DC based on their economic effects on employees and management. Specifically, we build up a simple simulation model that reflects the core characteristics of the firm and employees, and search for the optimal plan that maximizes the value of the firm as well as the employees' expected utilities. The main results from the simulation analysis is as follows; First, employees prefer the CBP and DC to the other two plans, while the firm prefers the CBP the most. Secondly, the Multiple Retirement Pension Plan is shown to be better for the employees, but worse for the firm as compared to the typical DB plan. This implies that conflicts of interests between employees and management needs to be solved if the Multiple Retirement Pension Plan is successfully introduced.
The Effect of Debt Mix on the Value and Riskiness of the Recapitalization Firm
Wee, Kyeongwoo,Park, Jongsung 한국경영컨설팅학회 2013 경영컨설팅연구 Vol.13 No.2
The purpose of this paper is to explain the small increase in equity risk of Kaplan and Stein(1990) after the recapitalization by the effective mix of short to medium term bank debt and long term unprotected debt. When the tax savings on interest payments are not certain and contingent upon the survival of the firm, the Modiligani-Miller proposition no longer holds and the structure of debt matters in the valuation of the firm's securities. This paper shows that the stable cash flows of the recapitalization companies enable the firms to issue a larger fraction of new debt as a form of short to medium term bank debt at relatively low interest rates, but use it effectively like long term unprotected debt by rolling it over. The advantage in debt financing allows the firms to enjoy tax savings over the long period of time without making the face value of debt too big. The small increase in the face value of debt and big increase in the firm value resulting from low financing cost and low bankruptcy probability yield the small change in equity risk with a moderate increase in the riskiness of debt.
국내 이동전화 서비스 이용에 영향을 미치는 요인에 관한 연구
서보밀(Bomil Suh),위경우(Kyeongwoo Wee),유진수(Jinsoo Yoo) 한국IT서비스학회 2007 한국IT서비스학회지 Vol.6 No.1
A lot of researchers have been interested in the factors influencing the use of mobile phone services. Most of the previous studies, however, verified only the research models developed by the authors. They did not consider which model agrees better with the real situation. This study presents six alternative models based on various previous studies, and compares the data fitness of the models. A Web survey of mobile phone users collected 2,217 cases. Statistical analyses, using SEM (Structural Equation Modeling), show that the fitness of the simplest alternative model is better than that of any other model. The simplest model has no causal relationship among exogenous factors, and proposes that all of exogenous factors have direct impacts on the customer satisfaction. In addition, the analyses say that corporate and brand image and additional service are more important than the other exogenous factors such as communication quality.