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정호진(Hojin Jung),정상훈(Sanghoon Jung),최세범(Seibum Choi) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
AWD system means it delivers drive force to all wheels so that it can help vehicle escape low mu surface or climb hill more conveniently. With the growing concern for vehicle safety issues, application of AWD is not only focusing on vehicle performance but also vehicle safety. To design AWD vehicle control logic, AWD system modeling which has similar simulations results of real AWD vehicle is crucial. This paper describe how to model transfer case which is a mechanical device to transfer some portion of torque of main drive shaft to sub drive shaft. Especially, wet clutch type model which can control the amount of torque distribution by allowing clutch slipping is introduced. To verify the feasibility of transfer case model, Carsim/Simulink based AWD system simulation results of vehicle which is based on RWD will be presented.
실험계획법을 이용한 자동차 시트 구조물 최적설계 및 해석 연구
정호진(Hojin Jung),이대섭(Daesuep Lee),권영두(Youngdoo Kwon),한덕희(Duckhe Han) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
In modern times, development trend of automobiles is the tendency to prefer the high fuel efficiency of automobile. Also, the structure of seat that takes 4% of automobile’s weight is the target to be secured the stability enough and attain the lightweight, To meet this, the characteristics of load to be applied to seat structure must be analyzed from the initial time, and it must be considered and designed material, thickness, distance to be assembled with recliner and condition of section through the calculation of numerical value. This study performed to reduce stress and moments to be occurred to seat frame through keep the optimum condition with D.O.E for cushion frame of seat due to passenger inertia weight at the rear Collision of automobile, This study looked for optimum values with Minitap and analyzed the cushion frame of seat with LS-DYNA, FEA tool, according to those Factor
정호진(Hojin Jung),권경민(Kyoung-Min Kwon) 한국콘텐츠학회 2016 한국콘텐츠학회논문지 Vol.16 No.2
본 논문은 판매원의 경험에 따라 임금이 최적 임금이 어떻게 변화하는 지에 대하여 고찰하였다. 판매원의 경험이 판매 성과에 미치는 영향이 크지 않은 경우를 가정한 기존 논문과 달리, 우리는 판매원의 적정 수준이상의 경험이 판매원의 업무 능력에 필수적인 환경에서, 판매에 따르는 인센티브 보상제도가 항상 최적이 아님을 밝혀냈다. 이 결과는 기존 논문들에서 다루어지지 않은 현상일 뿐 아니라, 현업에서 드물지 않게 관찰되는 임금 보상 제도를 설명한다. This study explains about a phenomenon where the structure of the compensation plan for a single salesperson may vary as he/she gains experience. Unlike past studies that implicitly assume the limited effect on salesperson’s experience, our result predicts that a salesperson will make an effort at every period early in his/her career without any commissions in order to gain experience. However, if one cannot expect any marginal returns of accumulated efforts, the sales manager must provide commissions on the high volume of sales at each period, to facilitate a high effort of a salesforce at earlier periods. Our paper provides important implications about dynamics in the compensation plan, which has not been addressed in the past studies but has frequently been witnessed in practice.
정호진 ( Hojin Jung ),최창규 ( Changkyu Choi ),( Li Su ) 서강대학교 지암남덕우경제연구원(구 서강대학교 시장경제연구소) 2021 시장경제연구 Vol.50 No.2
중국의 성별 패널데이터를 이용하여 본 연구는 불평등과 인터넷 사용 수준이 중국의 경제 성장에 어느 정도 영향을 미치는지 실증분석 하였다. 불평등과 정보기술이 경제성장에 긍정적인 영향을 미친다는 본 연구의 실증분석 결과는, 이 두 변수가 지역별 성장 격차를 설명하는데 중요한 역할을 한다는 것을 의미한다. 특히 우리는 실증분석 결과가 다양한 회귀식 모형에서뿐만 아니라 내생성 문제를 통제한 후에도 강건함을 보여 주었다. 본 연구는 인터넷 접근성을 높이고 경제성장을 지연시키지 않도록 점진적인 재분배정책을 고려할 필요가 있다는 점을 시사한다. We use province-level panel data to determine the extent to which inequality and internet usage affect economic growth in China. We found that both variables-inequality and information technology-positively impact growth, indicating that these factors play critical roles in explaining the growth gap. This finding was robust to various specifications even after controlling for possible endogeneity issues. Our result suggests that policymakers would do well to eliminate barriers to Internet access and consider policies that encourage gradual redistribution of income in order to maintain economic growth.