• 컴퓨터교육학회논문지
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• 제3권1호
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• pp.169-176
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• 2000

본 논문은 NIE교육을 위하여 웹에서 분산된 교육적인 신문 정보들을 수집하여 교사와 학습자에게 제공하기 위한 ENIG Agent에 관한 연구이다. ENIG Agent는 교육적인 신문 정보를 학습자에게 실시간으로 제공하기 위하여 해당 교육 신문 사이트 기사의 표제들을 취득한다. 최적화된 표제의 추출은 교육용 신문 사이트의 전처리 과정과 잡음 제거 작업 및 패턴 매칭을 통하여 이루어진다. 얻어진 교육용 신문 표제 정보는 NIE를 위하여 학습자에게 웹브라우저를 통해 제시된다. 얻어진 자료의 활용도를 높이기 위해 지능적인 학습 기능과 시각적인 분류 기술을 이용한다. 실험을 통하여 본 연구에서 설계 구현된 ENIG 에이전트의 효율성을 살펴보았다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2004년도 추계학술발표대회 논문집
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• pp.66-71
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• 2004

The purpose of this study is to identify the problems that a current day care center has by analyzing the space arrangement, and to come up with the suggestion that would improve the arrangement along with the interior design of the day care center by studying the usage of materials, colors, lightings and furniture. The result of this study to follow problems were identified. 1. Classrooms also served as sleeping areas, therefore those two areas needed to be separated. 2. The kitchen was too small for the number of children. So they need separated kitchen and dining room. 3. The day care center remodeled from the ordinary house was wrose than other facilities in material, color pattern and design for child-care. 4. A lot of fluorescent light and bulb were used without enough windows to let natural sunlight in. 5. The restroom was so small that it caused uncomfortability to children. Based on the problems above, we could reach to a following conclusion. Use of primary colors could brighten the image of a room, and feature or creative arrangement of furniture may make it intriguing. With the increase in the expectation and attention to the young kids, the facilities should change according to them and be designed for the children. It is needed to study about whether the space and the elements of the emotional image were applied properly.

• Journal of Electrical Engineering and Technology
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• 제8권2호
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• pp.244-251
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• 2013

This paper presents a study the change of the load profile on the power system by the charging impact of electric vehicles (EVs) in 2020. The impact of charging EVs on the load demand is determined not only by the number of EVs in usage pattern, but also by the number of EVs being charged at once. The charging load is determined on an hourly basis using the number of the EVs based on different scenarios considering battery size, model, the use of vehicles, charging at home or work, and the method of charging, which is either fast or slow. Focusing on the impact of future load profile in Korea with EVs reaching up 10 and 20 percentage, increased power demand by EVs charging is analyzed. Also, this paper analyzes the impact of a time-of-use (TOU) tariff system on the charging of EVs in Korea. The results demonstrate how the penetration of EVs increases the load profile and decreases charging demand by TOU tariff system on the future power system.

• 한국의류산업학회지
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• 제15권5호
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• pp.722-732
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• 2013

The purposes of this study were to investigate the needs for eco t-shirts of the new elderly consumers and to suggest strategies for eco t-shirts product development and marketing. Quantitative research was employed for research method. The data was collected from men and women in their age of 50-65, who lived in Busan, Ulsan, and Kyungnam province, during October, 2011. Respondents were selected by convenience sampling. A total of 307 responses among 350 were analyzed. Factor analysis, frequency analysis, t-test, chi-square, and regression were used for analysis. SPSS 20.0 was used for data analysis. Characteristics of the new elderly (lifestyle and environmental concern), consumption status of eco t-shirts (possession status and reasons of purchase/non-purchase), purchase intention for eco tshirts, consumer needs for t-shirts (usage situation, benefits sought, and dissatisfaction with t-shirts), preference for eco t-shirts (color, pattern, material, and shape), and demographics were surveyed. Based on the results, the vision of eco tshirts market for the new elderly consumers was positively prospected. In conclusion, specific strategies for eco t-shirts products development and marketing were suggested. Product development focused on practicality and material, design development reflecting consumers' preference, multipurpose product development, building up the product recognition, and moderate price strategy were suggested.

• 대한치과보철학회지
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• 제16권1호
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• pp.17-21
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• 1978

The object of this study was to measure of the distortion of various dental waxes under condition simulating clinical usage. Eleven commercial product (table) including the inlay and baseplate waxes were tested, and compared in the study. Test specimens were prepared $5{\times}5{\times}65mm$. split brass mold. Placed this rod wax specimens and the brass wax distortion test mold into the water bath and tested the distortion values for waxes at $35^{\circ}C,\;40^{\cric}C,\;45^{\circ}C\;and\;50^{\circ}C$. Measured the distortion as the difference between the final (Df) and original (Do) distance between the ends of the specimen. Recorded Df, Do and Df-Do (Distortion) to the nearest 0.5mm. A minimum of five specimens were tested for each material. The following conclusions may be drawn from this study. 1) It can be seen that, a significant wax distortion was obtained with the temperature of forming the pattern, and the length of time and the temperature at which it was stored. 2) It was found that, when the storage time was increased, the wax distortion was correspondingly increased. At the sametime, the higher the storage time was employed, the distortion was obviously much greater. 3) It can be observed that the higher the temperature at which the wax was manipulated, the less was the resulting distortion upon storage.

• 한국통신학회논문지
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• 제36권12A호
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• pp.959-965
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• 2011

다양한 서비스의 활성화로 인한 이동 단말의 사용 시간 및 트래픽의 증가로 인해 배터리로 구동되는 이동 단말의 전력 절감 기술이 주목받고 있다. 본 논문은 4G 기술 중의 하나인 Mobile WiMAX라 불리는 IEEE 802.16m의 전력 절감 기술에 대해서 기술한다. 먼저 IEEE 802.16m의 기초가 되는 IEEE 802.16e 전력 절감 방안과의 차이점 및 기술적 특정을 살펴본다. 이동 단말의 효율적인 전력 관리를 위해 패킷들의 도착 분포 정보를 기반으로 동적 수면 사이클 조절 방안을 제안한다. 제안한 방안을 에너지 절감 측면과 패킷 대기 지연 시간 측면에서 살펴본다.

• 디자인학연구
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• 제17권4호
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• pp.259-268
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• 2004

요즘은 브랜드전쟁의 시대라고 한다. 정보와 기술발달에 의한 21세기 시장환경 하에서 기업간 경쟁요소와 소비자의 선택기준이 변화함에 따라 브랜드자산은 기업의 가치를 결정하는 중요한 요소로 등장하게 되었다. 소비자의 머릿속에 브랜드의 변별력을 제고하는 방법으로써 TV광고를 통한 브랜드광고에서의 캐릭터 사용은 일반적이고 유용한 방법으로 오래전부터 활용되어 왔다. 마케팅차원에서 브랜드의 인지도를 높이는 수단으로서 캐릭터의 역할과 가능성을 좀더 상세히 알아보고 미국 광고대행사인 FCB사의 그리드 모델을 통해 TV광고에서의 카테고리별 캐릭터 사용패턴과 관여도와의 상관관계를 분석해 보았다. 또한 캐릭터 사용소재별 분석, 그리고 표현양식에 따른 분석을 통해 최근의 카테고리별 캐릭터 사용태도와 기법 등을 조사하였다.

• 전기학회논문지
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• 제61권9호
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• pp.1242-1248
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• 2012

Electric vehicle usage is currently very low, but it will be increase with development of electric vehicle technology and a good government policy. Moreover in 2020, advanced electric vehicle manufacturing system will give high performance for its price and mass production. Electric vehicle will become widespread in Korea. From an operational and a planned viewpoint, the electric power demand should be considered in relation to diffusion of electric vehicles. This paper presents the impact of the various battery charge systems. A comparison is performed for electric vehicle charging methods such as, normal charging, fast charging, and battery swapping. In addition, economic evaluation for the replaceable battery system and the quick battery charging system is performed through basic information about charging Infrastructure installation cost. The results of the evaluation show that replaceable battery system is more economical and reliable in side of electric power demand than quick battery charging system.

• Journal of Electrical Engineering and Technology
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• 제5권2호
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• pp.307-318
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• 2010

In this work, an accurate analysis of low frequency current ripple in residential fuel cell power generation systems is performed based on the proposed residential load model and its unique operation algorithm. Rather than using a constant dc voltage source, a proton exchange membrane fuel cell (PEMFC) model is implemented in this research so that a system-level analysis considering the fuel cell stack, power conditioning system (PCS), and the actual load is possible. Using the attained results, a comparative study regarding the discrepancies of low frequency current ripple between a simple resistor load and a realistic residential load is performed. The data indicate that the low frequency current ripple of the proposed residential load model is increased by more than a factor of two when compared to the low frequency current ripple of a simple resistor load under identical conditions. Theoretical analysis, simulation data, and experimental results are provided, along with a model of the load usage pattern of low frequency current ripples.

• 한국가구학회지
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• 제23권4호
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• pp.342-354
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• 2012

This study aimed at acknowledging characteristics of space usage and suggesting orientation of space planning and furniture designing that meet various residents' demands correlating with residential area, furniture and family members by doing fact finding of volume of the furniture in medium/small sized apartment. The contents of the study are "experience of functional remodeling," "a number of bedrooms correlating with a number of family" and "furniture arrangement of each space and characteristics of space utilization" based on forty six cases. Followings are results of the study. 1) It was acknowledged that the function of space relating to family members largely depends on furniture arrangement correlating with age of children. It is needed that flexible planning of residential area to meets growing children and various family demands. 2) Functional remodeling requires furniture rearrangement attended with the remodeling. Thus, it is required that ideas in more simple and efficient furniture designing and consideration of construction environment embracing that ideas. 3) It can be acknowledged that the most demanding matter to enjoy satisfied and comfortable life in residential area is the matter of storage area. It is also understandable that the matter can be worse by time going by and the change of living pattern. Therefore, it is required that the consideration of enough storage area compatible with its function of the room and the planning of built-in furniture for storage.