https://oak.chosun.ac.kr/handle/2020.oak/19137 2026-04-09T21:57:15Z https://oak.chosun.ac.kr/handle/2020.oak/19275 Title: 이동 통신기지국 결합형 소형 수직형 풍력 터빈 수치 해석 Author(s): 김성환; 최병기; 양동희 Abstract: This paper is to verify the design of a system suitable for a micro grid environment combining a vertical wind turbine with a mobile communication base station antenna. The blade was designed as NACA 0012 for vertical wind turbines. The basic design was done by 3D modeling. Using the designed 3D modeling, torque and power were calculated by numerical analysis using computational fluid dynamics method. The torque and power were compared for two cases of analysis of the wind turbine and addition of the antenna structure to the wind turbine. For the analysis of the wind turbine, wind speed was classified into 6 ~ 12 ㎧ and 100 ~ 500 RPM. In the case of an antenna structure at 10㎧ wind speed, average torque is reduced by 91% and power by 94% compared to the basic performance of a wind turbine. With an antenna structure, the Power increased at a rotational speed of 150 RPM 2017-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/19274 Title: 고령 여성의 전신 체형분석 : 3차원 계측데이터를 중심으로 Author(s): 차수정 Abstract: The purpose of this study is to analyze the 3D measurement data of old-old women aged 70-85 and to characterize the whole body type and to formulate the whole body type of older women. The type of body shape of old-old women was analyzed in 5 types. The wide-shoulder slim-leg type was wide on the shoulders, thin on the legs, shoulder don't sag, height, body and leg's length were normal. The short-body sag-hip type was the shape with lowered hip, short length of legs and center front, and normal body shape. The apple-hip fat type's body was fat and thick. And this type had normal height and legs. The sag-shoulder thin type was thin and hip was not sagged, but the shoulders were much sagged. The long arm and leg slim type was tall, legs were long. Shoulders were narrow and body was slim. The old-old women had almost no difference in bust and waist circumference. Their abdomen circumference was larger than the chest and hip circumference. According to the general dimensioning method applied when making a pattern for clothing, the shape of a garment was not produced. Therefore, new dimensioning and patterning methods should be applied to basic pattern making for old-old women's clothing. 2017-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/19277 Title: 고로슬래그 및 탄소섬유가 함유된 그라우트재의 강도특성에 대한 연구 Author(s): 김찬정; 선준영 Abstract: As a substitute for cement, interest is growing in the Blast-furnace slag. Blast-furnace slag is waste that is emitted as a byproduct of a series of steel manufacturing processes, such as smelting and steelmaking ; it is chemically stable and can reduce industrial waste, not just industrial waste but also air pollution. Therefore, this research has developed a high strength, precision grout-induced groute with the process of processing advanced microorganism minerals Calcite, recycling resource carbon fiber and blast furnace slag powder, and cement mix. 2017-12-31T15:00:00Z https://oak.chosun.ac.kr/handle/2020.oak/19276 Title: A Novel High Gain DC-to-DC Boost Type Converter Employing Switched-Inductor Author(s): Man-Suck Oh; Jong-Baek An Abstract: The paper introduces a novel high voltage gain DC-to-DC boost type converter. The proposed topology is based on the switched-inductor structure. Compared to a classical boost converter for the same input and output voltage gain, the proposed topology reduces voltage stress across semiconductors and capacitor. Besides that, a high voltage gain can be achieved with a small duty cycle. Circuit analysis, operating theories, and a guideline of passive components selection of the proposed high voltage gain DC-to-DC boost type converter are presented. Simulation results in PSIM software with 25 V input voltage, 400 V output voltage at output power of 800 W are shown to verify the theoretical analysis 2017-12-31T15:00:00Z