• 융복합기술연구소 논문집
• /
• 제3권1호
• /
• pp.45-49
• /
• 2013

Spherical active carbon materials have been used for the removal of pollutants in the area of food processing, water treatment, air purification, oral administration. Moreover, they are now expected to make an epoch in the areas of electronics, life science, environmental technology, and so on due to their superior physical properties. Carbon particles should be requested for the edgeless spherical shapes in order to minimize the loss due to the abrasion during the process and/or practical use, but the carbon particles manufactured from petroleum-based pitch do not meet these needs. Nowadays, thus, the spherical active carbon particles carbonized from various spherical polymer beads are studied with thermoplastic and/or thermosetting polymers. In this paper, the synthesis of spherical phenolic beads and furan beads, which are thermosetting polymers, and their carbonization techniques are examined.

• 조명전기설비학회논문지
• /
• 제21권9호
• /
• pp.81-86
• /
• 2007

Electric utility companies have the responsibility of providing good electricity for their customers. They have introduced the DAS(Distribution Automation System) to automate the power distribution networks. DAS engineers require state-of-the-art applications, such as a way to actively manage the distribution system and gain economic benefits from a flexible DAS architectural design. The existing DAS is not capable of handling these needs. It requires operator intervention whenever feeder overloading is detected while operator error could cause the feeder overload area to be extended. It also utilizes a closed architecture and it is therefore difficult to meet the system migration and future enhancement requirements. This paper represents a web based, platform-independent, flexible DAS architectural design and active database application. Recent advanced Internet technologies are fully utilized in this new DAS architecture allowing it to meet the system migration and future enhancement requirements. By using an active database, the DAS can minimize the feeder overloading area in the distribution system without operator intervention, thereby minimizing mistakes due to operator error.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
• /
• pp.430-432
• /
• 2007

This paper proposes the possibility of SonicID system which is the active RFID based on the ultrasonic spectrum instead of using radio frequency. For the feasibility study, various performance indexes are measured in terms of power consumption and signal path loss onto the frequencies of 40KHz, 433MHz, and 2.4GHz. In addition to the line of sight condition, realistic situations are considered for diverse deploying environments. The results of these analyses demonstrate that the SonicID holds the potential to meet the needs of future advanced RFID system in a scalable fashion.

• International Journal of Aeronautical and Space Sciences
• /
• 제12권3호
• /
• pp.225-240
• /
• 2011

Active and shape morphing aerospace structures are discussed with a focus on activities aimed at practical implementation. In active structures applications range from dynamic load alleviation in aircraft and spacecraft up to static and dynamic shape control. In contrast, shape morphing means strong shape variation according to different mission status and needs, aiming to enhance functionality and performance over wide flight and mission regimes. The interaction of required flexible materials with the morphing structure and the actuating mechanisms is specifically addressed together with approaches in design and simulation.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1987년도 정기총회 및 창립40주년기념 학술대회 학회본부
• /
• pp.457-462
• /
• 1987

This paper deals with the PWM controlled active AC power filter. A new PWM control method from the viewpoint of speed and simplicity is proposed. And a microprocessor-based controller is used to realize the active AC power filter. The existing PWM control methods are primarily based on Fourier series expansion and these methods need FFT calculation and solving nonlinear harmonic equations, which are heavy burden to real-time control. The proposed method is based upon generalized pulse series expansion and needs only definite integrals of harmonic signal. So, computational effort can be reduced by a large margin. The digital circuit using 16-bit microprocessor is designed to implement the actual active power filler.

• International Journal of Contents
• /
• 제5권3호
• /
• pp.79-85
• /
• 2009

Emergent requests or urgent information among enterprises require their intimate collaboration in B2B EC (electronic commerce). This paper analyzes the needs of intimate cooperation of distributed EC systems in terms of business contracts and presents an active rule-based methodology of close cooperation among EC systems and an active rule component to support it. Since the rule component provides high level rule patterns and event-based immediate processing, system administrators and programmers can easily program and maintain intimate cooperation of distributed EC systems independently to the application logic. The proposed active rule component facilitates HTTP protocol. Its prototype is implemented in B2B EC environment and evaluated using basic trigger facility of a commercial DBMS.

• 한국생활과학회지
• /
• 제22권1호
• /
• pp.141-155
• /
• 2013

The purpose of this study is to identify consumers' needs and purchase intention of high-functional sportswear according to sports participation motivations. Internet survey was done for data collection and the subjects were 300 consumers in their 20-39's who participated in sport activities at least once a week. Factors of sport participation motivations were ostentation, social interaction, self development, mental health, and physical health. Consumers were segmented into the motivation retard group, the multi-purpose pursuit group, the health pursuit group, and the extrinsic motivation pursuit group. And factors of consumers' needs for high-functional sportswear were practicality and comfort function, body protection and physical function, and skin protection and health function. The multi-purpose pursuit group showed strong needs for active and comfort, body protection and physical function, and skin protection and health function but the motivation retard group showed the lowest needs for high functional sportswear. Purchase experiences of high-functional sportswear, accomplishment, and duration period of sport activity affected positively on the purchase intention of high-functional sportswear.

• 성인간호학회지
• /
• 제15권1호
• /
• pp.45-55
• /
• 2003

Purpose: This study was to investigate the knowledge, attitudes, and educational needs for sexuality of the elderly. Method: This was a descriptive study, in which data were collected from February to April 2002 from 354 elderly who were residing in Chung-Chung province. Result: 1. The level of knowledge regarding sexuality was below average. 2. The level of the attitudes toward sexuality of the elderly was neither positive nor negative. 3. The educational needs of the elderly were above average. 4. Higher level of knowledge on sexuality was significantly correlated with more positive attitudes and education needs for sexuality, and more positive attitudes toward sexuality was significantly correlated with more educational needs for sexuality. Conclusion: Particularly men, with good health, and those who were in intimate relationships with their spouses and still engaged with active sexual life showed somewhat higher level of knowledge and positive attitudes as well as higher educational needs. Therefore, further development and applying of sexuality promotion programs for healthy elder couples should be considered in the future to enhance the quality of life of elder population. In addition, it is also suggested to develop an alternative intervention program on sexuality for elderly who are women, those with meager health, and the bereaved.

• 한국콘텐츠학회논문지
• /
• 제14권7호
• /
• pp.529-540
• /
• 2014

우리나라의 베이비 부머는 전체 인구구조의 약 1/4을 차지하는 인구집단으로서, 기존의 세대들이 경험하지 못한 기대수명 100세라는 초 고령화 시대에 직면하고 있다. 이들 세대는 압축적 경제성장의 주역으로 건강한 신체와 풍부한 경제력, 여가 문화적 소비욕구를 바탕으로 지속적 경제활동과 적극적 사회참여 욕구를 가지고 있어 기존의 노인세대와 구분되는 새로운 인구계층으로 '액티브 시니어'의 주 대상으로 불리고 있다. 본 연구는 전국에서 가장 높은 베이비 부머 거주 밀도를 보이는 서울시를 대상으로 예비적 고령자로서 베이비 부머의 주거욕구가 무엇인지 소비자 관점에서 상향식 과정을 통해 살펴보고 이를 주거단지계획 기준으로 선정하고자 하였다. 분석결과, 서울시의 베이비부머는 주거단지계획 기준요소로 '사회 접근성'을 가장 높게 평가하고, '의료 접근성'은 두 번째로 중요한 요소로 판단하였다. 기타 '생활 편의성', '공간 인지성' 등이 차하의 순위를 기록하였다. 연구를 통해 서울시에 거주하는 베이비 부머는 생애주기적 관점에서 액티브 시니어가 지향하는 라이프 스타일과 매우 유사하다고 분석되었고, 이는 기존 노인세대가 보였던 고령자 전용적 거주선호와 구별되는 액티브 시니어의 틈새적 주거욕구라 판단된다.

• 가정과삶의질연구
• /
• 제29권3호
• /
• pp.23-41
• /
• 2011

The purpose of this study is to explore social supports for elderly housing and their residential lives in small cities along rural counties of the United States and Canada, and suggest future implications for age-concentrated rural villages in Korea. In this study, five small and medium cities in non-metropolitan counties of California and Ontario province were visited and elderly residents and service experts were interviewed about their perceptions of community integrated social support networks for senior residences. The senior housing complexes were built due to influx of both metropolitan and rural residents seeking warm localities, traffic connections, business purposes in active production areas. and leisure attractions. There are five main social support networks for senior housing issues in these areas. First, the areas are claimed for senior zones and accordingly health industries are encouraged by local authorities. Second, the community is homogeneously constructed as a senior friendly environment and include features such as an RV park and mobile cottages. Third, senior-helping seniors are offered active work through golf-cluster active retirement communities. Fourth, traditional theme production camps are mobilized by the elderly workers. Lastly, an information system is maintained for screening volunteers and for senior abuse prevention. On the other hand, residential lives are occasionally negatively influenced by unbalanced concentrations of elderly facilities such as nursing stations and funeral homes. For the future of Korean rural elderly policies, suggestions are made as follows: first, an integrated urban and rural township that contains attractive places for early retiring people who seek a warm atmosphere in later life needs to be constructed. Second, an integrated model retirement village of urban and rural retirement life needs to be initiated as a measure of evaluating the adaptation process of movers in senior concentrated zones. Third, a cooperation system among governmental ministries needs to be formed with the long- term goal of establishing a traditional rural town of independent housing districts and medical facilities in rural areas. Fourth, productive and active lifestyles need to be maintained as the local community and government develop successful retirement rural villages, by limiting the expansion of nursing related facilities. Finally, generation integrated visiting welfare programs and services need to be further developed for the housing areas especially in the winter, when social integration and activity are relatively low.