• 한국건축시공학회지
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• 제5권2호
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• pp.123-130
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• 2005

The purpose of this study is to present the optimum performance of hybrid waterproofing technology, which is including material and construction method. Recently, Hybrid waterproofing technology is developed little by little in KOREA. But there is not any other criterion of performance and evaluation of this technology. So, It is needed that appropriate performance items is are settled urgently. This paper were obtained by the SPSS analysis. In this study the safety factor are more important performance of building waterproofing materials than durability comfortability and productivity. And results of this analysis showed that (1) safety performance consists of Fatigue resistance, Crack Control performance deterioration Processing of tensile performance, Compressive Strength test (2) comfortability performance consists of watertightness, bond performance (3) persistency performance consists of abrasion resistance, tensile performance, flexural strength (4) productivity performance consists of dimension, unit space weight.

• 대한기계학회논문집A
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• 제24권4호
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• pp.926-936
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• 2000

Actual and strict definition of the shift quality for the powertrain system equipped an automatic transmission must be understood through the acceleration change of the vehicle body, which the driver directly feels as a shift shock. For this reason, it is necessary to concurrently analyze the characteristics of the powertrain system and the vehicle body. This paper presents the mathematical model of the vehicle body, which is based on the equivalent lumped system, to append to the developed model of the powertrain system. The concept of tire slip is also introduced for the experimental relationship between tire/road and driving force. Using the developed dynamic simulation programs, shift transients characteristics are analyzed. Theoretical results are compared with experimental ones from real car tests in equal conditions in order to prove the validity of presented model. In these tests, the system to measure the vehicle acceleration is used with various speeds and engine throttle sensors. It is expected that the presented modeling techniques can provide good predictions of the vehicle driving comfortability.

• 대한교통학회지
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• 제32권5호
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• pp.487-496
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• 2014

개별 도시철도역사의 불편성에 대한 연구는 활발히 진행되고는 있으나, 역사의 유형별 특성을 고려한 환승편의시설의 중요도(importance factor)에 대한 연구는 미비한 실정이다. 따라서 본 연구에서는 구조방정식모형(SEM: Structural Equation Model)을 활용하여 도시철도역사의 유형(이용수요 및 승강장형태)에 따른 환승편의시설(이동편의시설, 정보제공시설 및 쾌적성 등)의 인과관계를 통계적으로 검증하고 도시철도역사의 유형별 환승편의시설에 대한 중요도 결정모형을 제시하였다. 도시철도역사의 유형별 중요도 분석결과 대형급 역사이면서 섬식과 상대식이 환승할 경우 정보안내시설, 이동편의시설위치 및 쾌적성의 중요도가 높은 것으로 분석되었고, 중형급 역사이면서 상대식과 상대식이 환승할 경우 정보안내시설, 이동편의시설 및 쾌적성의 중요도가 높은 것으로 분석되었다.

• 디자인학연구
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• 제11권2호
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• pp.215-226
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• 1998

80년대 중반까지만 해도 신형 차라고 하면 정형화된 팩키징 레이아웃을 전제로 하여 구형보다는 큰 바디이거나 거의 비슷한 레이아웃으로 형태를 조금씩 바꾸어 스타일 이미지 변형을 시도하는 방법이 주류를 이루었다. 이후 연비절감과 승차 감 향상을 위한 공역학적 바디 스타일 경쟁 시기에서도 정형화된 팩키징 레이아웃은 크게 변하지 않고 엔지니어링 부분의 고출력, 고 효율화를 통하여 상품성을 향상시키고자 하였다. 이제는 일상생활 전체에 대한 모터라이제이션의 급격한 진행과 함께 자동차 산업의 발달로 공급과잉 및 기술의 평준화가 이루어져 가고 있다. 이러한 기술 평준화 현상은 자동차 디자인에서의 혁신의 개념이 과거와는 다른 양상으로 발전되어 어떤 의미로는 진정한 의미의 자동차 디자인을 요구하는 시대에 이르렀다. 자동차 디자인에서는 외형보다는 실내의 디자인 계획이 훨씬 중요하다. 자동차 승 원의 거주 이동 목적에 맞는 컴포터빌러티 향상 노력이 자동차 디자인의 본질이기 때문이다. 본 연구는 외형 결정의 선행요소인 자동차 실내의 디자인 계획방법을 연구하여 보고 디자인 혁신을 통하여 소비자들에게 좋은 평가를 얻은 차종의 실내디자인 계획에 대한 분석적 접근을 통한 데이터 추출, 자료화로 미래지향적, 본질적 의미이 자동차 디자인 활동의 참고자료로 활용하고자 한다.

• 한국염색가공학회지
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• 제9권3호
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• pp.33-41
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• 1997

Polystyrene microcapsules were prepared by microencapsulation technique of solvent-evaporation. These microcapsules were characterized by Infrared spectroscopy, thermal analysis, scanning electron microscopy, and shape analysis. Fragrant water was used as a core material. Thermal and pH stabilities of polystyrene microcapsules were relatively excellent. And functional finishing on cotton fabric with microcapsules was applied.

• 대한치과기공학회지
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• 제20권1호
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• pp.21-25
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• 1998

A detailed description of the Laboratory Processing procedures for Soft Base Denture that varies from those offered by the manufacturer has provid to be effective. As follows ; 1. Pomotion of patient's comfortability 2. increase in denture retention 3. because of the same heat-curing denture materials used improves bonding & endurance 4. often used denture refitting 5. reducing the rate of alveolar absorption The processing for soft base denture is very sensitive, consequntly.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1931-1932
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• 2008

To demonstration the efficiency of fuzzy logic controller, we carried out simulation with a automobile's transfer function. First, we designed the PID controller by using Ziegler-Nichols tunning method. Second, we calculated time response for each controller, then we compared the speed patterns of fuzzy controlled system and PID controlled system. Also we compared the difference of input variable. By comparing two controller's response, we can confirm the merit of fuzzy controller about comfortability. Fuzzy controller can reduce input changing frequency.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.1067-1072
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• 2003

Generally dual mass flywheel(DMF) is used as a solution to reduce noise and vibration of power train system and to improve the comfortability of passenger car. In this paper, design concept of new DMF model, analytical/numerical model, test procedure and tuning results are presented. Design parameters are studied by some numerical methods and tests. As the result, we can find more efficient model of DMF and reduce vibration level in power train system.

• 한국정밀공학회지
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• 제15권9호
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• pp.175-181
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• 1998

The coil spring is used in the suspension of automotive vehicles and small omnibus. Recently, it can be adopted hardening type spring which spring constant is accompanied by increasing displacement to increase passenger comfortability. One of methods which assert this characteristic is cylindrical-taper section coil spring. In this paper we calculate ideal spring characteristic curve from the given vehicle conditions, and show the design method of the cylindrical-taper section coil spring.

• 한국염색가공학회지
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• 제8권5호
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• pp.76-83
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• 1996

Fragrant microcapsules were prepared by in situ polymerization using urea-formaldehyde prepolymer. Lemon oil and migrin oil as susceptible materials were used. The diameter and distribution of the microcapsule were controlled by several factors, such as wall material, core material content, emulsion agent and stirring speed, respectively. Susceptible cotton fabrics with fragrant release functionality were successfully produced by using microcapsule containing fragrant materials.