• 제목/요약/키워드: Design change

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차량 자동주행 시스템의 안전한 차선변경을 위한 하이브리드 제어기 설계 (Hybrid Controller Design for a Safe Lane Change Maneuver in Automated Highway Systems)

  • 최재원;최재원;김영호
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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    • pp.17-17
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    • 2000
  • In this paper, we design a hybrid controller for a safe lane change maneuver in automated highway systems(AHS). The proposed hybrid controller consists of a supervisor which controls the behaviors of discrete-event dynamic systems, and a regulator which controls the operations of continuous-variable dynamic systems. The supervisor determines whether the system starts a maneuver or not, via a condition for a safety, and gives orders to the regulator for performing the maneuvers. And the regulator tracks the planned path generated in the supervisor. The conditions for a safe lane change maneuver are proposed using the velocity, the acceleration, and geometrical relationship of vehicles.

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학교시설변화 방향에 따른 기존 학교 리노베이션 계획방향에 관한 연구 (A Study on the Existing School Renovation Plan Direction for School Facilities Change Direction)

  • 김성중;이호진
    • 교육녹색환경연구
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    • 제2권2호
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    • pp.15-33
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    • 2002
  • This study purpose is extract on the architectural principles and architectural planning direction for existing school facility renovation. therefore, This study is occur to renovation from change factor and change direction of the school facility under prerequisite, school facility change direction is with a pedagogy side and it classified with the social side which it bites and it presented. School facility renovation extracted a plan principles with the base which will reach. Was extracted renovation plan Principles to analyze the interrelationship of necessary condition of school facility, It follows in renovation principle presented the renovation plan direction 61 branch.

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가족 구성원의 변화에 따른 라이프스타일의 변천 (Change of Lifestyle by Changing Member of Family)

  • 이남식;서귀숙
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2007년도 추계학술발표대회 논문집
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    • pp.54-58
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    • 2007
  • The part of women was limited in a large family of the past and the benefit of a family was more valuable than the advantage of an individual. But social activity of the individual who is a member of the family is increased by the industrialization and rapid changes of society. As a result importance of the family is on the decrease in a society. All such phenomenons make new family types that we could not imagine at past and various life-style. This research proposes life-style of the near future and investigated by life-style stream process according to change members of the family with various documentary record. In conclusion, life-style of the near future is changed individualistic, rationalistic and material.

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아파트 단지 외부공간의 형태구성 변화에 관한 연구 -서울 송파구 아파트 단지를 중심으로- (Study on the Change in the Forms and Compositions of Outdoor Planning of Apartment Complex)

  • 김동찬;김신원;김정주
    • 한국산업융합학회 논문집
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    • 제13권2호
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    • pp.113-124
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    • 2010
  • Since the 1970s the increased economy allowed population to concentrate on larger cities which facilitated the lack of apartment complex in the cities. In order to have the solution to the problem, apartment complex were expected to consider the efficiency of using its land. Therefore, The purpose of this study is to clarify the change of the Apartment Complex especially in the Forms and Compositions of outdoor planning of Apartment complex. As a result, the analysis of this researching process of them has shown us the following important characteristics in the change of the Apartment Complex.

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원사의 수축에 따른 다공성 편성물의 형태변화와 열·수분 전달특성 (The appearance change and heat·moisture transfer properties of knitted fabric by yarn shrinkage)

  • 상정선;박주현;이미식;오경화
    • 복식문화연구
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    • 제25권6호
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    • pp.880-892
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    • 2017
  • In this study, the appearance change and the heat moisture transfer properties of knitted fabric by yarn shrinkage were examined to obtain useful data on the development of thermo-sensitive functional materials. Eleven types of knitted fabric were knitted using highly bulky acrylic-blended yarn. After shrinking the specimens using dry heat treatment, the appearance change and thickness were measured. An HEC simulator was adopted for measuring the heat moisture transfer properties of specimens by yarn shrinkage. When holes were arranged vertically in the mesh structure, the specimens with 2,500 and 5,000 holes showed high percent change of hole area, appearance, and thickness. When holes were diagonally arranged in the mesh structure, the percent change of hole area in the specimen with 1,250 holes was larger than the one with 2,500 holes. However, the dimensional stability of the specimen with 2,500 holes was better because of its smaller appearance and thickness change. In the tuck structure, the percent change of hole area in the specimen with 625 and 416 holes was relatively large compared with the appearance and thickness change. Furthermore, the hole size in the tuck structure was smaller than that in the mesh structure but the percent change of hole area was larger. Therefore, it was proved that the tuck structure is more suitable than the mesh structure for developing thermo-sensitive functional materials. Heat moisture transfer property test verified that the change of hole area by yarn shrinkage enabled obtaining the thermal effect due to the distinct temperature difference in the inner layer.

선박의 보강판 구조물의 동특성의 최적 변경법에 관한 연구 (A Study on the Optimum Modification of Dynamic Characteristics of Stiffened Plate Structure of Ship)

  • 박성현;박석주;고재용
    • 한국항해학회지
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    • 제25권1호
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    • pp.45-52
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    • 2001
  • 본 논문은 선체구조에 많이 이용되고 있는 보강판 구조물의 동적 특성을 최적 변경하는데 그 목적이 있다. 유한요소법(FEM), 동적 감도해석법, 최적구조 변경법을 이용하여 보강판의 동적 특성을 최적화한다. 먼저, FEM을 이용하여 보강판 구조물의 동적 특성을 해석한다. 다음으로 설계변수의 변화에 따른 동적 특성의 변화율을 동적 감도해석법으로 해석한다. 감도해석법으로 구한 감도값과 최적구조 변경법을 이용하여 설계변수들의 변경 량을 계산한다. 보강판 구조물의 고유진동수의 변경을 목적함수로 하고, 보강판의 두께와 보강재의 단면2차 모우멘트를 설계 변수로 한다. 본 논문에서 이용한 최적구조 변경법이 보강판 구조물의 동특성을 최적화하는데 유용함을 보여준다.

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분배계통에 따른 지하주차장 환기설비 성능의 예측

  • 김경환;이재헌;오명도;김종필
    • 설비공학논문집
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    • 제13권10호
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    • pp.982-992
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    • 2001
  • In this paper, the performance of ventilation equipments in enclosed parking garages were investigated for several air distribution systems by numerical method. Air change effectiveness of the non-mixing system was 0.42. It meant that more supply air as much as the design supply air was needed to maintain good indoor air quality. In the high speed nozzle ventilating system which is most expensive one, air change effectiveness was 0.54. Therefore this system satisfied to ventilation design. In the jet fan ventilating systems, air change effectiveness for jet fan ventilating system-A with 18 jet fans and jet fan ventilating system-B with 6 jet fans in circulation mixing arrangement were 0.565 and 0.42 respectively. Jet fan ventilating system-C with 6 jet fans in transport mixing arrangement was 0.535. Jet fan ventilating system-A and jet fan ventilating system-C met the ventilation design. But velocity in jet fan ventilating system-A was over 2.0m/s which is inappropriate in human comfort. Therefore this system is not proper to ventilation. Jet fan ventilating system-C was the optimum one for enclosed parking garages among 5 systems examined in this paper.

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