• 지식경영연구
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• 제10권2호
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• pp.85-103
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• 2009

Web 2.0, characterized as openness, sharing, and participation, has enabled Internet users to easily generate a variety of contents, and to share them through Web 2.0 services. Knowledge search service (KSS) is positioning itself as one of typical Web 2.0 services. Yet, few studies have sharpened our understanding of users' knowledge sharing behavior in the KSS environment. In order to address this knowledge void, this paper attempts to explore antecedents of their usage behavior in the KSS environment. Typically, they utilize stored knowledge and share their knowledge simultaneously. Considering this characteristic, our study regards service usage intention and knowledge sharing intention as final dependent variables. This study advances a research model based on Bhattacherjee's expectation-confirmation model, which is expanded by incorporating trust belief. Because of the openness of KSS, trust belief is believed to play a critical role in forming users' service usage intention and knowledge sharing intention. Furthermore, this study examines the difference of the antecedents' effects in terms of users' gender. We collected data from 275 respondents who have experience in using KSS. PLS (partial least squares) was employed for the analysis of the data. Analysis results confirm the important role of user satisfaction and trust belief in the formation of users' service usage intention and knowledge sharing intention. More importantly, trust belief has a more salient effect on knowledge service usage intention than user satisfaction. This study also shows the moderating role of users' gender. Finally, this paper provides managerial guidance on strategic planning aimed at improving users' service usage intention and knowledge sharing intention in the KSS environment.

• Journal of Radiation Protection and Research
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• 제19권2호
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• pp.109-120
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• 1994

원자력시설의 비상사태 시 주변주민을 보호하기 위한 비상대응행위의 효과를 평가할 필요가 있다. 비상대응행위는 지역특성과 개인 행동특성에 따라 매우 다양하게 나타날 수 있으므로, 비상대응행위를 나타내는 변수들은 특정 값을 갖기보다는 일정구간에 분포되는 값을 갖는다. 대부분의 기존 비상대응모델에서는 계산을 단순화시키기 위하여 가정을 통해 특정 값을 사용한다. 단순화 과정중에 필연적으로 정보의 손실이 발생되어 결과적으로 비상대응 모델은 큰 불확실성을 포함하게 된다. 피지이론은 변수의 불확실성을 계산에 포함시켜 엄밀한 계산을 통해 정보손실을 최소화시키면서 계산결과를 얻어낼 수 있는 수학적인 도구를 제공해 준다. 본 연구에서는 퍼지집합, 퍼지추론, 퍼지관계 등의 이론을 응용하여 원자력시설의 비상사태 시 비상대응효과를 평가할 수 있는 방법을 개발하였다. 개발된 모델의 장점은 언어변수를 이용하여 지역특성을 표현하고 전문가의 의견을 반영하여 비상대응효과를 평가하므로, 단순화 가정중에 유발되는 정보의 손실을 줄일 수 있는데 있다. 비상대응 모델내의 불확실한 변수에 대한 퍼지이론의 응용성을 개선하기 위해서는 전문가의 의견을 반영하여 변수들에 대한 적합한 멤버쉽 함수와 퍼지조건문을 확립할 필요가 있다.

• Smart Structures and Systems
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• 제20권2호
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• pp.247-261
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• 2017

In the field of dynamic measurement and structural damage identification, it is generally known that modal frequencies may be measured with higher accuracy than mode shapes. However, the number of natural frequencies within a measurable range is limited. Accessing additional forms of modal frequencies is thus desirable. The present study is concerned about the extraction of artificial boundary condition (ABC) frequencies from modal testing. The ABC frequencies correspond to the natural frequencies of the structure with a perturbed boundary condition, but they can be extracted from processing the frequency response functions (FRF) measured in a specific configuration from the structure in its existing state without the need of actually altering the physical support condition. This paper presents a comprehensive experimental investigation into the measurability of the ABC frequencies from physical experiments. It covers the testing procedure through modal testing, the data processing and data analysis requirements, and the FRF matrix operations leading to the extraction of the ABC frequencies. Specific sources of measurement errors and their effects on the accuracy of the extracted ABC frequencies are scrutinised. The extracted ABC frequencies are subsequently applied in the damage identification in beams by means of finite element model updating. Results demonstrate that it is possible to extract the first few ABC frequencies from the modal testing for a variety of artificial boundary conditions incorporating one or two virtual pin supports, and the inclusion of ABC frequencies enables the identification of structural damages without the need to involve the mode shape information.

• 한국컴퓨터정보학회논문지
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• 제11권5호
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• pp.337-343
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• 2006

디지털 카메라의 이용자가 빠르게 증가하고 싸이월드 및 블로그 서비스의 활성화로 인하여 인터넷 상에 다양한 사진들이 떠돌고 있으며, 그 중에서 인물사진이 가장 많은 부분을 차지하고 있다. 그러나 인물사진의 초상권 때문에 활용할 수 있는 인물 사진은 전무한 반면 웹사이트 제작사, 광고 기획자, 기타 디자이너들은 다양한 표정의 인물사진을 필요로 하고 있다. 본 연구에서는 디지털 카메라 이용자들에게 초상권의 보호 하에 인물사진을 판매하고, 디자이너들이 요구하는 인물사진을 정확하고 신속한 검색을 보장하기 위해 인물사진과 관련한 색인어를 제시하는 검색엔진을 제안한다. 이 검색엔진은 기존의 명사형만을 지원하는 키워드나 카테고리 외에 명사와 동사를 동시에 키워드로 사용하는 검색이 가능하고 인물의 감성정보, 표정, 복장 등의 다양한 특성을 표현할 수 있는 장점을 가지고 있다.

• Steel and Composite Structures
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• 제31권4호
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• pp.373-385
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• 2019

This paper presents a useful in-plane structural analysis of low-rise blind-bolted composite frames with semi-rigid joints. Analytical models were used to predict the moment-rotation relationship of the composite beam-to-column flush endplate joints that produced accurate and reliable results. The comparisons of the analytical model with test results in terms of the moment-rotation response verified the robustness and reliability of the model. Abaqus software was adopted to conduct frame analysis considering the material and geometrical non-linearities. The flexural behaviour of the composite frames was studied by applying the lateral loads incorporating wind and earthquake actions according to the Australian standards. A wide variety of frames with a varied number of bays and storeys was analysed to determine the bending moment envelopes under different load combinations. The design models were finalized that met the strength and serviceability limit state criteria. The results from the frame analysis suggest that among lateral loads, wind loads are more critical in Australia as compared to the earthquake loads. However, gravity loads alone govern the design as maximum sagging and hogging moments in the frames are produced as a result of the load combination with dead and live loads alone. This study provides a preliminary analysis and general understanding of the behaviour of low rise, semi-continuous frames subjected to lateral load characteristics of wind and earthquake conditions in Australia that can be applied in engineering practice.

• 경영정보학연구
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• 제7권1호
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• pp.21-40
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• 2005

정보화에 대한 투자규모가 지속적으로 증가하고 있음에도 불구하고 투자효과는 현실화 되지 못하고 있다. 이를 극복하기 위해 다양한 노력이 수행되고 있으며, 최근에는 공공 및 민간 분야에서 각각 정보자원관리 또는 IT 제대로 관리하기 노력이 새로운 대안으로 제시되고 있다. 미국 행정부의 경우 오래 전부터 이러한 정보자원관리를 위한 법적 기반을 마련해두고 지속적으로 추진하고 있다. 국내에서도 최근 정보자원관리에 기반한 노력의 필요성을 인식하고 이를 위한 법적 장치의 마련에 나서고 있다. 그러나 효과적 IT 관리를 위한 법의 성격 및 목적, 수단, 조정 및 지원 부처의 실체 등에 관한 정확한 이해가 부족한 상태에서 부처별로 추진되다 보니 많은 혼란이 따르고 있다. 이에 본 연구에서는 정보자원관리 관점에서 미국과 국내의 법 체계를 비교 분석하고, 향후 국내 정보자원관리 관련 노력의 제도적 기반을 마련하기 위한 법적 요소를 도출한다.

• 대한가정학회지
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• 제43권8호
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• pp.69-81
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• 2005

The purpose of this study is to design high school boy's uniforms, which fit well and express the traditional aesthetics of Korean clothing. Korean traditional clothing is getting ground for the use as active wear as well as formal wear such as wedding or special holiday clothing. This is partly due to the introduction of western clothing in Korea because of the practical nature of this type of clothing. This study was carried out as follows: 1. First, 197 high school boys from 5 different high schools were surveyed. All of these schools use Korean style school uniforms. The survey asked the students about their satisfaction with the current designs, problems and design preferences for Korean style high school uniforms. In general, the boys are not satisfied with the aesthetic and fashionable aspects of their uniforms. 2. The second survey dealt with design preferences from a variety of design options of Korean-style school uniforms. The design options were presented to the students as in the form of 10 different types jackets and 6 different types of pants. Using the results of the second survey as a guideline, the designs of Korean style school uniforms were developed. 3. In order to make the test garments, a block bodice pattern for the Korean style school uniforms was developed. Using the developed bodice block pattern, 6 designs were made of wool. The 6 test designs consisted of 3 different types of jackets and 3 different types of pants. 4. Incorporating the most preferred design features, school boy Korean style school uniform designs were developed. The characteristics of the design include neck line opening and its finishing, AH and sleeve shape, embroidered traditional patterns and fastenings. In this study we were able to develop comfortable clothing, which expressed the traditional aesthetics of Korean clothing.

• 한국지능시스템학회논문지
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• 제24권3호
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• pp.330-336
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• 2014

연속교반탱크반응기, 담수화 플랜트, 증류탑, pH 중화 프로세스 등을 포함한 많은 산업용 프로세스들은 높은 비선형성과 시변 특성으로 인해 제어가 까다로워 보다 정밀하고 안정된 성능을 가지는 제어기를 설계하려는 많은 노력들이 있어 왔다. 본 논문에서는 기존 연구의 단점을 개선한 CSTR 프로세스의 농도제어용 PID 제어기를 동조하는 문제를 다룬다. 액추에이터 포화 문제를 극복하기 위해 PID 제어기에는 적분기 안티와인드업 피드백 루프가 구성되며, PID 제어기의 파라미터는 전체 제어 프로세스가 만족스러운 설정치 추종 성능을 가지도록 진화연산(EA)에 의해 동조된다. 제안하는 방법은 시뮬레이션을 통해 설정치 추종 성능, 외란 억제 성능과 파라미터 변동에 대한 강인성을 확인한다.

• Nutrition Research and Practice
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• 제10권3호
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• pp.321-327
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• 2016

BACKGROUND/OBJECTIVES: Fruit and vegetable consumption of children in the United States falls below recommendations. The U.S. Department of Agriculture Fresh Fruit and Vegetable Program (FFVP) is a national free-fruit and vegetable school distribution program designed to address this problem. This permanent, legislated program provides funding to qualified elementary schools for provision of additional fruit and vegetables outside of school meals. The objective of this study was to understand children's perceptions of FFVP after the intervention and formulate recommendations that may improve success of the intervention. SUBJECTS/METHODS: Secondary data were obtained from 5,265 $4^{th}-6^{th}$ graders at 51 randomly-selected FFVP intervention schools in Indiana. Anonymous questionnaires were completed late in the 2011-2012 academic year. Multilevel logistic regressions were used to determine associations between students' perceptions of program effects (4 close-ended items) and their preference toward the program. Content analysis was applied to a single open-ended item for program comments. RESULTS: Over 47% of students reported greater intake of fruit and vegetables due to FFVP, and over 66% reported liking the program. Student-reported program effects were positively associated with preference for the program (P < 0.01). Themes that emerged during analysis of 3,811 comments, included, students liked: the opportunity to try different kinds of fruit and vegetables, types and flavors of fruits served, and benefits of eating fruit. Fewer students liked the types of vegetables and their benefits. A small group disliked the program citing poor flavor of vegetables and quality of fruits. Important suggestions for the program include serving more dipping sauces for vegetables, cooking vegetables, and providing a greater variety of produce. CONCLUSIONS: The degree that students liked FFVP may predict the program's effects on fruit and vegetable intake. FFVP may become more acceptable to students by incorporating their suggestions. Program planners should consider these options for achieving program goals.

• 한국유가공학회:학술대회논문집
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• 한국유가공기술과학회 2004년도 제58회 춘계유가공심포지움 - 세계 우유의 날 기념 국제 심포지움
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• pp.21-39
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• 2004

Fermented milks have been recognized as healthy foods since ancient times, but those using intestinal bacteria such as Bifidobacterium and lactic acid bacteria (LAB) are even more valuable from the standpoint of view of maintaining health. They have also now come to be recognized as important in the field of preventive medicine. Although advances in the medical sciences in the last 50 years have significantly increased the human lift span, an unfortunate fact is that many of us are now living long enough to experience chronic disorders such as coronary heart disease, hypertension, osteoporosis, diabetes and cancer. In recent years there has been renewed interest in health promotion and disease prevention by incorporating probiotic bacteria into foods to counteract harmful bacteria in the intestinal tract. Therefore, there are now a wide variety of commercial products containing prospective probiotics that claim health-promoting effects, such reductions in large botvel carcinogens and mutagens, antitumor properties, cholesterol-lowering effects, increased lactose digestion, relief from con-stipation, stimulation of immunocomponent cells and enhancement of phagocytosis. Two well-known representative probiotic is LAB and Bifidobaclerium. Traditional probiotic dairy strains of LAB which have been designated as GRAS (Generally Recognized As Safe) bacteria have a long history of safe use and most strains are considered comestible microorganisms with no pathogenic potential. Accordingly, there is considerable interest in extending the range of foods containing probiotic organisms from dairy foods to infant formulas, baby foods, and pharmaceuticals. In addition, the ingestion of probiotics, prebiotics, and symbiotic as wll as combinations of pro- and prebiotics has recently aroused renewed interest as enhancing the beneficial relationship between the host and intestinal microflora in both healthy and diseased indivisuals. Non-communicable chronic diseases such as cancer, cerebral hemorrhage, is chemic heart disease, and diabetes mellitus has recently been recognized as adult diseases in Japan as well as other countries. and are considered to be inevitably associated with aging. These diseases occur as a result of individual life styles. The Japanes Government. Ministry of Health, Labor and Welfare has proposed substituting the term 'adult diseases' with 'lifestyle-related diseases'. It has emphasized the importance of prevention rather than treatment. since the well-known increase in the elderly population in Japan is predicted to result in a variety of socioeconomic problems. n this lecture on the Present status of fermented milk products in Japan, I will report a strategy for the development of fermented milk products in Japan from the standpoint of view of research in Japan on LAB and Bifidobacteria. They could play an important role in preserving human health by controlling intestinal microflora capable of producing toxic effects on the host.