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능동 현가 장치가 차량의 핸들링에 미치는 영향에 관한 연구
이증섭(J. S. Lee),강준원(J W. Kang),백승주(S. J. Baek),박성문(S. M. Park),오재윤(C. Y. Oh) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
This paper develops a 7 DOF vehicle model to study the effects of the active suspension on ride. The model is used to derive a control law for the active suspension using a full state linear optimal control technique. A wheelbase preview type active suspension is also considered in the control law derivation. The time delay between wheelbases is approximated using Pade approximation technique. The ride model is extended to a 14 DOF handling model to include lateral, longitudinal, yaw and four wheel spin motions. A control law which is derived by considering only ride related parameters is used to study the effects of the active suspension on a vehicle handling. J-tum maneuver simulation results show that the active suspension has a slower response in lateral acceleration and yaw rate, a bigger steady state lateral acceleration and an oversteer tendency. Lane changing maneuver simulation results show that the active suspension has a little bigger lateral acceleration but a much smaller roll angle and roll motion. Braking maneuver simulation results show that the active suspension has a much smaller pitch angle and pitch motion.<br/>
의료기관 행정직원의 의사소통 체험 : 질적 연구 방법론적 접근
백승주 ( S J Baek ),진정근 ( J K Jin ),박용익 ( Y I Bak ),이혜용 ( H Y Lee ),석소현 ( S H Seok ),정연옥 ( Y O Jeoung ),이지언 ( J H Lee ),안지현 ( J H Ahn ),박성철 ( S C Park ) 한국텍스트언어학회 2013 텍스트언어학 Vol.34 No.-
The purpose of this study is to show how administrative staff in medical institutions communicate. Based on narrative interviews with 10 administrative staff and text analysis of transcribed interview texts, we could obtain the following categories of internal communication in medical institutions: communicative experiences with other types of occupations such as doctors; experiences with other departments; experiences with other staff in one‘s own departments, such as with one‘ superior and inferior; communicative experiences by dialogue types such as meetings; communicative experiences by gender, by generations, by media; communicative experiences of effective communication. Among these eight categories, we concentrate on the two relevant categories ‘communicative experiences in one“s own department‘ and “communicative experiences by dialogue types“.