• Structural Engineering and Mechanics
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• 제72권3호
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• pp.355-366
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• 2019

Self-centering wall (SCW) is a resilient and sustainable structural system which incorporates unbonded posttensioning (PT) tendons to provide self-centering (SC) capacity along with supplementary dissipators to dissipate seismic energy. Hysteretic energy dissipators are usually placed at two sides of SCWs to facilitate ease of postearthquake examination and convenient replacement. To achieve a good prediction for the skeleton curve of the wall, this paper firstly developed an analytical investigation on lateral load responses of self-centering walls with distributed vertical dampers (VD-SCWs) using the concept of elastic theory. A simplified method for the calculation of limit state points is developed and validated by experimental results and can be used in the design of the system. Based on the analytical results, parametric analysis is conducted to investigate the influence of damper and tendon parameters on the performance of VD-SCWs. The results show that the proposed approach has a better prediction accuracy with less computational effects than the Perez method. As compared with previous experimental results, the proposed method achieves up to 60.1% additional accuracy at the effective linear limit (DLL) of SCWs. The base shear at point DLL is increased by 62.5% when the damper force is increased from 0kN to 80kN. The wall stiffness after point ELL is reduced by 69.5% when the tendon stiffness is reduced by 75.0%. The roof deformation at point LLP is reduced by 74.1% when the initial tendon stress is increased from $0.45f_{pu}$ to $0.65f_{pu}$.

• 식품과학과 산업
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• 제52권1호
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• pp.84-99
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• 2019

Dietary fiber is defined as soluble and insoluble polysaccharide consisted in the plant cell wall-associated fibers naturally occurring in fruits, vegetables, and cereal products, and of isolated fibers that are added to processed foods which are also artificially modified. There are so many difference types of dietary fibers as arabinoxylan, polydextrose chicory, oligosccharide. inulin, pectin, bran, cellulose, ${\beta}$-glucan, resistant starch and some seaweed polymers as alginate. Most of them provide many biological benefits in the intestine, as lower risk for developing coronary heart disease, stroke, hypertension, diabetes, obesity and some of the gastrointestinal disease like as colon cancer. And also lowering cholesterol levels, improves glycemic and insulin sensitivity to non-diabetic and diabetic persons including immune system. Beside of many benefits, average consumers in developed and under developing countries take far less amounts of dietary fiber that international organization recommended. Adequate intake of dietary fiber is 14g/1,000kcal base using the energy guide line of 2,000kcal/day for women and 26,000 kcal/day for men, dietary intake is 28g/day of adult women and 36g/day for adult men. The mechanisms behind the reported effects of dietary fiber on metabolic health are not fully well established. It is suggested that changes in intestinal viscosity resulting mucus increasing, macro-nutrients absorption, rate of passage of large intestinal, production of short chain fatty acids by fermentation. Production of gut hormones and changes of microbiota in intestine. It is necessary to do more research in this field in the future and combined interdisciplinary works together.

• 한국정보통신학회논문지
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• 제24권4호
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• pp.508-514
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• 2020

LTE (Long Term Evolution) 및 5G와 같이 지속적으로 발전하는 이동 통신 표준을 구현하기 위해 소프트웨어 정의 라디오 (SDR, Software Defined Radio) 개념은 뛰어난 유연성과 효율성을 제공한다. 수년 동안, 최고급 디지털 시그널 프로세서 (DSP, Digital Signal Processor) 시스템 온 칩 (SoC, System on Chip)은 멀티 코어 및 다양한 하드웨어 보조 프로세서를 지원하는 방향으로 개발되어왔다. 이 논문에서는 TI의 TCI663x 칩을 사용해 구현한 SDR 플랫폼 하드웨어에 대해 소개하고, 이 플랫폼 상에서 멀티 코어 DSP를 BCP (Bit Rate Coprocessor) 및 TPC (Turbo Decoder Coprocessor)와 연동하여 구현한 LTE 전송 채널 (Transport Channel)의 성능을 다양한 구현 옵션에 따라 평가한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권2호
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• pp.369-390
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• 2023

Technologies for disaster management are highly sought areas for research and commercial deployment. Landslides, Flood, cyclones, earthquakes, forest fires and road/train accidents are some causes of disasters. Capturing video and accessing data in real time from the disaster site can help first responders make split second decisions which may save human lives and valuable resource destructions. In this context the communication technologies performing the task should have high bandwidth and low latency which only 5G can deliver. But unfortunately in India, deployment of the 5G mobile communication systems is yet to give a shape and again in remote areas unavailability of 4G signals is still severe. In this situation the authors have proposed, simulated and experimented a 4G-5G communication scheme where from the disaster site the signals will be transmitted by a 5G terminal to a nearby 4G-5G gateway installed in a mobile vehicle. The received 5G signal will be further relayed by the 4G-5G gateway to the fixed 4G base station for onward transmission towards the disaster management station for decision making, deployment and relief monitoring. The 4G-5G gateway acts as a relay and converter of 5G signal to 4G signal and vice versa. This relayed system can be further mounted on a vehicle mounted relay (VMR) as proposed by 3GPP in Release 18. The scheme is also in the same line of context with Verizon's, "Tactical Humanitarian Operations Response" (THOR) vehicle concept. The performance of the link is studied in different channel conditions, the throughput achieved is superb. The authors have implemented the above mentioned system towards smart campus networking and monitoring landslides activities which are common in their regions.

• 인간식물환경학회지
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• 제22권5호
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• pp.435-444
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• 2019

This study is based on the premise that a garden space is a place that not only requires physical labor but also encourages conversation in the gardening group. We suggest the use of urban gardens as a place to revitalize local communities by promoting people to participate in various event programs. Through the theoretical study, we set the requirements that can be applied to "urban garden events". We developed measurement items and scales to be used as variables of each construction concept. Our survey was conducted on adults aged 19 and above who visited the 8th Korean Urban Agriculture Expo. Out of total 310 copies of the distributed questionnaire, only 298 effective samples were used in the empirical analysis. We can assume that people want to revitalize local communities based on the fact that 71 (23.8%) participants said they thought the purpose of the event is to achieve unity among residents. Throughout analysis, 15 of the necessary items were confirmed and classified into two factors: image of event (Factor 1) and evaluation item (Factor 2). As a result of verifying the relationship between educational level for Factor 1, age was significant in five items and education level was significant in six items. For Factor 2, four items were effective in relation to education level, while significant results were not found in relation to age. These results are expected to be significant if the intellectual curiosity of the residents is satisfied and the demand base of the urban garden events according to the characteristics of city people is expanded. Based on this study, it is necessary to conduct research on the use of urban gardens as an event with social functions as well as various programs that can be carried out in gardens to build and revitalize the community.

• 철학연구
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• 제125호
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• pp.7-30
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• 2019

본고는 『천 개의 고원』의 서문인 「리좀」을 바탕으로 하여, 리좀을 이해하기 위한 핵심개념 중의 하나인 '미리우(milieu)'를 '리좀적 중도'이자 일종의 '철학적 중도'로 규명하는 것을 목적으로 한다. 글의 구체적인 전개과정은 다음과 같다. 먼저, 텍스트에서 서양 전통 형이상학의 나무-뿌리 형태의 책에 대한 대안으로 제시되고 있는 리좀-수로 형태, '책-리좀'의 사유 체계를 검토한다. 다음으로, 리좀적 사유가 어떻게 '길'이 되고, 동양적 '도(Tao, 道)'와 만나 리좀적 중도가 되며 철학적 중도로 해석될 수 있는지를 밝힌다. 다른 한편으로, 본고는 리좀적 사유가 우리로 하여금 내재적 차이와 타자에 대한 이해를 보다 깊이 하도록 하며, 또한 공(空)한 다양체의 원리에 따른 실천적 삶의 수행을 돕는 방법으로서의 의의를 가짐을 조명한다. 이 연구는 동양의 중도의 사유를 현시대에 적합하게 풀어내어 철학적으로 실천하는 일에 기여할 수 있을 것으로 기대된다.

• 한국컴퓨터정보학회논문지
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• 제14권11호
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• pp.145-157
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• 2009

OSGi는 서비스 레지스트리를 통한 런타임 서비스 검색을 지원함으로써 서비스간의 인터랙션을 진작하는 대표적인 SOA기술이다. OSGi와 더불어 SOA의 선두 그룹을 형성하고 있는 웹 서비스 기술은 광역 인터넷에 위치한 네트워크 서비스들이 개방 인터페이스에 따라 상호 작용하여 새로운 부가 기능을 지원할 수 있도록 하는 토대를 제공하고 있다. 본 논문에서는 OSGi 프레임워크 환경에서 웹 서비스 조합 언어인 WS-BPEL을 이용하여 OSGi 서비스와 웹 서비스를 합성하여 복합 서비스 및 응용을 구성할 수 있도록 하는 새로운 기법을 제안한다. 이 결과 랜 환경을 주 대상으로 하는 OSGi 서비스와 광역 엔터프라이즈 환경의 웹 서비스가 소속 도메인 경계를 넘어 서비스 조합에 참여할 수 있게 됨으로써 단일 도메인 내 조합에서는 가능하지 않았던 응용 기능 지원이 가능해진다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2020년도 학술발표회
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• pp.119-119
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• 2020

Globally, the demand for food and water resources are increasing rapidly with the growing concerns of meeting the projected population upsurge, specifically by 2050. The global population is projected to hit 9.8 billion in 2050 while the food demand is expected to increase by 77% from the 2007 base year. Moreover, the already scarce water resources, especially in the food-producing regions, expected to be significantly affected as food production already accounts for over 70% of the global water resources. However, the estimated food demand encapsulated the actual demand for both human consumption and animal feed in addition to the exuberant food waste at the consumption stage of the supply chain, notably in the developed countries. Managing the food consumption demand and food waste can have across-the-board benefits on water resources and other associated food production impacts. This study assessed the water-saving potentials through food waste in Korean households using the food waste data obtained from the direct weighing analysis. The household food waste collection and characterization were carried out during the summer (July), fall (September), and winter (December) seasons of 2019. The water footprint related to the food waste within Korean households was based on the water footprint concept, i.e. indirect water use. The results of our estimation showed that an average Korean household wasted 6.15 ± 4.36 kg daily, amounting to 12.53 ± 11.10 m3 of water resources associated with the waste. On the per capita basis, an average of 0.024 ± 0.017 kg/capita/day of food was wasted resulting to 0.049 ± 0.044 m3/capital/day of water resources wasted. The food waste types that accounted for the principal share in the water footprint were beef, soybean, rice and pork with values 30.7, 10.1, 9.6, and 7.5%, respectively. Considering that the production of meat and meat products are water intensive and the agricultural water use in Korea is largely for rice production, addressing the food waste of these two important agricultural products can be a hotspot for water saving potential in the country. This study therefore provides an insight to addressing the water scarcity in the country through reducing household food waste.

• 한국비블리아학회지
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• 제18권1호
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• pp.147-168
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• 2007

본 연구는 전통적 업무의 관점에서 웹 2.0이라는 새로운 환경의 대학도서관 사서 업무를 분석하여 전통과 현대를 통합하는 업무개발의 근거를 제시한데 의의가 있다. 이용자의 참여로 도서관 서비스를 혁신하는 대학도서관 2.0에서 사서의 업무를 분석한 결과 전통적인 도서관 업무인 $\ulcorner$장서개발과 수서$\lrcorner$는 $\ulcorner$자원개발$\lrcorner$로, $\ulcorner$분류와 목록$\lrcorner$은 $\ulcorner$기술개발$\lrcorner$로, $\ulcorner$대출$\lrcorner$은 $\ulcorner$정보교육$\lrcorner$으로, $\ulcorner$참고봉사$\lrcorner$는 $\ulcorner$서비스 개발$\lrcorner$로, $\ulcorner$보존$\lrcorner$은 $\ulcorner$아카이브 구축$\lrcorner$의 개념으로 제시할 수 있었다. 사서의 업무는 전반적으로 확장되는 것으로 보였으며 $\ulcorner$전문성 확장$\lrcorner$에 중요한 사항들은 '협력', '교육문화', '기술능력'이었다.

• Human Ecology Research
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• 제61권1호
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• pp.155-168
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• 2023

This study focused on working women's perceptions of social attractiveness and their appearance management behavior. Social attractiveness is defined as individuals' achieved attractiveness which can be expressed through social expressive power or social skills rather than innate physical appearance. This study was empirically conducted through questionnaires distributed to 200 working women in South Korea. According to the results, the participants recognized four factors constituting social attractiveness: physical appearance management, business manners, social skills, and sexual attractiveness. When they were asked to assess themselves on the same measures, these characteristics were further classified into six factors: business manners, feminine attractiveness, fashion sense, sociability, communication skills, and active appearance management. Their self-perceived social attractiveness was found to be influenced by all these factors in the order of feminine attractiveness, business manners, sociability, communication skills. Based on the self-presentation tendencies, the participants were classified into various groups, including the passive management group, daily life-oriented management group, work-oriented management group, neutral group, and active management group. The relative importance of the social attractiveness components was found to differ by group, although working women in all groups rated weight management higher than appearance management behavior. This study has implications in that it facilitates an understanding of the concept of social attractiveness and also provides a foundation base in terms of beauty consulting and marketing for working women to improve their social attractiveness.