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박기홍 ( Kihong Park ) 한국노동경제학회 2018 勞動經濟論集 Vol.41 No.3
본 연구는 박사학위 소지자들을 대상으로 성별 임금격차와 그 원인에 대해 분석하였다. 국내 박사인력을 대상으로 하는 표본조사인 박사인력활동조사를 이용하여 박사학위 소지자들의 성별 임금격차 수준을 우선 식별하고, 임금격차에 대한 정확한 실태 파악을 위해 Oaxaca류의 임금격차 분해 모형을 이용하여 성별 임금격차를 두 집단의 인적특성 차이에 기인하는 임금차이와 임금방정식의 추정계수 차이로 인해 발생하는 임금차별로 분해하였다. 분석 결과 임금격차 중 임금분해 모형으로 설명이 불가능한 임금방정식의 구조적 차이로 인한 임금차별의 비중이 약 38∼43% 수준으로 나타났으며, 이는 박사학위 소지자들의 성별 임금격차에도 노동시장에서의 차별에 관한 문제의 중요성이 크다는 것을 암시한다. This paper examines the gender pay gap among doctorate holders in Korea to understand the determinants of this gap and control of its variation. A particular focus of this study is to seek to infer the extent to which this pay gap is the consequence of gender-based disparate treatment. The main results indicate that there is a sizeable gender pay gap even among workers with doctorate degrees, that is, very highly educated workers. Moreover, this gender pay gap cannot be largely explained by gender differences in characteristics, indicating the existence of discrimination against female doctorate holders in the Korean labor market.
박기홍(Kihong Park),허승진(Seung-Jin Heo) 한국자동차공학회 2003 한국 자동차공학회논문집 Vol.11 No.3
HILS(Hardware-In-the-Loop Simulation) is a scheme that incorporates hardware components of primary concern in the numerical simulation environment. Due to its advantages over actual vehicle test and pure simulation, HILS is being widely accepted in automotive industries as test benches for vehicle control units. Developed in this study is a HILS system for VDC(Vehicle Dynamics Control) with a valve control system that modulates the brake pressures at four wheels. Two VDC control logics were developed and tested in the HILS system. Test results under various driving conditions are presented in this paper.
차량 동역학 제어기를 위한 노면 마찰계수 및 차체 미끄럼각 추정기 설계
박기홍(Kihong Park),허승진(Seung-Jin Heo),백인호(Inho Paik),이경수(Kyongsu Yi) 한국자동차공학회 2001 한국 자동차공학회논문집 Vol.9 No.2
The VDC(Vehicle Dynamics Control) is a control system whose target is to improve vehicle stability under critical lateral motion. The system has a good potential of becoming a standard active safety unit in passenger vehicles since it can be implemented on top of the ABS/TCS system with little extra cost. This, however, is possible only when the signals that the VDC system demands can be obtained with sufficient accuracy. In this research, estimators for the road friction coefficient and body sideslip angle have been designed. The two variables have great influence upon performance of the VDC system but not directly measurable. For the estimator design, the Newton method and the nonlinear observer theory have been exploited. The performance of the estimator have been verified via simulations on critical driving conditions.