• 한국정보통신학회논문지
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• 제10권12호
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• pp.2308-2314
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• 2006

인터넷 기술의 발전으로 사용자가 이동 중에도 상거래가 가능한 모바일 상거래로 빠르게 진화되어 가고 있다. 모바일 상거래는 전자 상거래 특성을 상속받지만 구별되는 특성 또한 다양하다. 모바일 상거래 특성을 분석한 연구가 많이 수행되었으나 대부분 한정된 분야로 진행되었다. 본 논문에서는 모바일 상거래 관련자들의 다양한 요구를 반영 할 수 있도록 모바일 상거래의 다양한 측면의 요소를 추출 및 분석하였다. 이는 전자상거래와 구별되는 새로운 특성이며, 이를 통해 모바일 상거래의 성공요소를 추출하고, 이들 요소를 관련자들에 적용되는 주관적 특성을 보다 객관적으로 평가하고자 계층분석방법(AHP)을 사용하여 평가하였다. 본 논문에서 식별된 시스템 품질의 신뢰, 정보품질의 이해 용이성 등의 분석 결과는 모바일 상거래 성공요인의 중요한 요소다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권7호
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• pp.1533-1546
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• 2013

Wireless multicast is considered as an effective transmission mode for the future mobile social contact services supported by Long Time Evolution (LTE). Though wireless multicast has an excellent resource efficiency, its performance suffers deterioration from the channel condition and wireless resource availability. Cognitive Radio (CR) and Device to Device (D2D) are two solutions to provide potential resource. However, resource allocation for cognitive wireless multicast based on D2D is still a great challenge for LTE social networks. In this paper, a joint sub-carriers and power allocation model based on D2D for general cognitive radio multicast (CR-D2D-MC) is proposed for Orthogonal Frequency-Division Multiplexing (OFDM) LTE systems. By opportunistically accessing the licensed spectrum, the maximized capacity for multiple cognitive multicast groups is achieved with the condition of the general scenario of imperfect spectrum sensing, the constrains of interference to primary users (PUs) and an upper-bound power of secondary users (SUs) acting as multicast source nodes. Furthermore, the fairness for multicast groups or unicast terminals is guaranteed by setting a lower-bound number of the subcarriers allocated to cognitive multicast groups. Lagrange duality algorithm is adopted to obtain the optimal solution to the proposed CR-D2D-MC model. The simulation results show that the proposed algorithm improves the performance of cognitive multicast groups and achieves a good balance between capacity and fairness.

• 정보처리학회논문지C
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• 제13C권6호
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• pp.795-802
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• 2006

상거래 활동은 정보기술 발전으로 일반상거래에서 전자상거래 형태로 진행되었으며, 현재는 이동 중에도 상거래 활동을 할 수 있는 모바일 상거래 형태로 발전한다. 모바일 상거래는 일부 전자상거래의 특성을 갖지만, 차별되는 특성도 있다. 기존의 모바일 상거래 특성을 분석한 연구는 지역적, 분야별에 따른 특정 관점에 집중한다. 본 논문은 사용자측면, 개발자 측면 사업자 측면을 바탕으로 기능적 측면과 기술적 측면 그리고 시장적 측면등 다양한 측면과 특성을 고려하여 모바일 상거래의 성공요소를 추출하여 분석하였다. 추출된 요소는 관련자들의 주관적 특성을 객관적으로 평가하고자 계층분석방법(AHP)을 사용하였다. 본 논문에서 식별된 시스템 품질의 신뢰, 컨텐츠 품질의 이해 용이성 등의 분석결과는 현재에도 적용되고 있는 모바일 상거래 성공요인 중 하나이다.

• 대한한의학회지
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• 제26권3호
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• pp.43-54
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• 2005

Backgrounds : Many people think that ski disease has littel influence on the quality of life in patient, but various studios show that skin disease may produce a range of impacts on QOL. Nevertheless, there is much to be learned about the association between the duality of life and skin disease in the area of Oriental dermatology. Objectives : This study was conducted fe investigate the impact of the various skin diseases on QOL and explore prognostic factors that influence outcomes. Methods : 103 patients were recruited who filled out more than $90\%$ of the skindex-29 questionnaire. The function of sum scores and three domain scores with each skin disease were investigated, as well as the correlation of each domain scores. Results : The disease with the lowest qualify of life was atopic dermatitis. followed by eczematous dermatitis, seborrheic dermatitis and acne vulgaris in order. The sum scales showed significant correlation with three domain scores in atopic dermatitis, urticaria, allergodermia, acne vulgaris, psoriasis and seborrheic dermatitis, The correlation of all three domain scores was significant in atopic dermatitis, urticaria, allergodermia, and psoriasis. Conclusions : Tn this study, skin disease affects the quality of life in physical, social, and psychological factors- Thus, we must consider the quality of life as well as clinical severity inpatients with skin disease.

• 복식문화연구
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• 제13권5호
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• pp.743-755
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• 2005

The Purpose of the study was to compare clothing shopping motives, fashion information sources, evaluation criteria of apparel products, store selection criteria, apparel buying places, and purchasing experience and country of origin place on imported clothing. The total of 371 consumers, college female students in Korea and Japan were sampled in both countries. ANOVA, factor analysis, Duncan's multiple range test, t-test, frequency, and percentage as analysis methods were used. The results of the study were as follows. According to the comparative analysis of clothing purchasing behavior by factors, the result showed that both of them had more personal motives than social ones, regarding clothing purchasing motives. The clothing purchasing motives of students in Korea was higher than it of students in Japan. In the use of information sources, the students of both countries considered the information by consumer very importantly. Next to it, they highly regarded the information by marketer. The students in Korea used all informations more than the students in Japan. In the clothing selection, both of them considered criteria esthetics very importantly. The students in Korea considered 'brand name', 'versatility', and 'pleasing to others' as important, but the students in Japan considered 'price' and 'prestige' very importantly. For store selection criteria, Korean students considered 'duality guaranteed', 'service', and 'their and other's experience' as important but Japanese students regarded 'price' and 'variety of products' as important. A department store was the most highly preferred among clothing purchasing stores. After it, for Korean students, fashion mall, renowned brand stores, discount store were considered in order of preference, for Japan, speciality stores, fashion mall, renowned brand stores are preferred. Regarding imported clothing, Korean students, in order of preference, preferred the goods of America, Italy, France, England, etc. Japan students preferred the goods of America, Italy, China, France, etc.

• 대한교통학회지
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• 제27권1호
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• pp.191-200
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• 2009

본 연구는 현재 보행교통류율, 보행자지체 등의 정량적인 지표만을 고려하고 있는 기존 보행자 이동공간 서비스수준(Level of Service) 평가의 한계를 극복하고, 보행자의 이동공간(보도 및 횡단보도)만족도에 영향을 미치는 정성적 요인을 반영하여 보행자의 실질적인 서비스 질(QOS : duality of Service)을 측정할 수 있는 통합적 지표를 개발하는 것이 목적이다. 연구를 위한 기초자료 수집은 설문조사를 이용하였고, 통합지표 개발을 위해 계층분석법(AHP)과 네트워크분석법(ANP)을 활용하였다. 주요 연구결과는 첫째, 보행자가 서비스수준을 판단할 경우 중복성을 느끼고 있음을 알 수 있어, 네트워크분석법에 의한 지표를 적용하는 것이 적절함을 확인하였다. 둘째, 보행자 행태, 유지관리, 보행경관 및 환경과 같은 정성적인 요인을 고려해야 한다는 것을 알 수 있었으며 특히 주거지역에서 정성적인 요인의 중요도가 높은 것을 알 수 있었다. 향후 실질적인 보행자 서비스 질을 평가하기 위해서는 정량적인 지표는 물론 정성적인 지표를 고려하는 것이 적절할 것이라 판단된다.

• 한국수산과학회지
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• 제6권3_4호
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• pp.101-111
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• 1973

생 전복을 액체질소동결, 송풍동결, 반송풍동결, 정지공기동결의 네가지 동결방법으로 동결하여 $-20^{\circ}C$에서 3개월간 저장하여 동결방법에 의한 전복근육의 물성적 변화, 단백질의 변성 등을 검토하여 다음과 같은 결과를 얻었다. 1) 생전복의 사후경직은 다른 어류보다 빨랐다. 2) 압측시험치, 전단시험치는 액체질소동결을 제외하고는 동결방법에 의한 차는 없었고, 저장기간이 길어짐에 따라 약간 감소하였다. 3) 염가용성질소는 동결저장기간중 용출량이 완만하게 감소하였다. 4) 유리수의 유출량은 패주와 다리 사이에는 차가 있었고, 저장기간중 패주는 유리수가 증가하는 경향이었다. 5) Texture의 Panel test 결과 저장기간을 통하여 Texture가 감소하는 경향이었으며, Texture의 변화는 유리수의 변화(P<0.01), 단백질의 변성(P<0.05), 압축시험치의 변화(P<0.05)와 유의의 상관관계가 있었다. 본 논문을 지도하여 주신 동경수산대학 교수 전중 화부 박사 그리고 논문의 작성에 조언해 주신 부산 수산대학 식품공학과 이응호 박사님께 감사의 뜻을 표한다.

• 한국통신학회논문지
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• 제36권12C호
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• pp.764-773
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• 2011

다중 안테나 전송은 단일 셀 환경에서 큰 성능 이득을 제공하는 반면에 다중셀 환경에서는 간섭에 의해서 다중 안테나의 이득이 많이 사라지게 된다. 또한, 다중셀 환경에서 효율적인 빔 형성 방법을 계산하는 것은 여전히 어려운 문제중에 하나이다. 먼저 이 논문에서는 다중셀 환경에서 점근적으로 낮은 SNR과 높은 SNR에서 최적의 하향링크 빔행성 방법이 MRT 빔형성과 ZF 빔형성임을 보인다. 둘째, 이 점근적 최적 빔 형성 결과를 이용하여 쌍대 역방향 문제로부터 얻어진 MMSE 빔형성 형태를 갖는 두가지의 준최적 하향 빔형성 방식을 제안한다. 각 빔 형성 방식에 대해서 복잡도에 띠라서 세가지의 다른 부클래스 알고리즘을 고려한다. 모의 실험을 통하여 제안된 준 최적 알고리듬은 복잡도와 성능 사이에 트레이드 오프를 제공함을 보인다.

• 산경연구논집
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• 제10권7호
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• pp.71-82
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• 2019

Purpose - This study aims to identify the priorities of medical service quality improvement by customer satisfaction characteristics and potential customer satisfaction improvement (PCSI) index based on the dualistic quality classification of Kano Model (1984) for Comprehensive Health Screeening Center in General Hospitals and Centers only for Comprehensive Health Screening and suggest a direction for future improvement. Research design, data, and methodology - Through advanced research on health screening medical service quality, this study set four service quality factors, including tangible, human, process and supportive factors, and 39 measurement items. Based on these items, the study used 117 questions, which consist of dualistic quality factors, customer satisfaction coefficients, positive and negative questions for PCSI index and questions for current satisfaction. 300 effective samples were collected for adults in their 20s who experienced health screening service in Seoul, Gyeonggi-do and Incheon within the past two years. Collected data were input in the quality evaluation duality table to categorize quality factors and calculate customer satisfaction coefficients by Timko(1993). The study also analyzed PCSI index in comparison with current satisfaction and identified priorities in quality improvement. Results - It was found that the most urgent factors to improve the quality in both groups were adequate waiting hours and emergency response for complications, which are process factors classified as unitary quality. It is urgently needed to improve the quality as the PCSI index was high in supportive factors (complaint response team) as attractive quality in Comprehensive Health Screening Center in General Hospitals and in process factors (prevention of infection) as unitary quality in Centers only for Comprehensive Health Screening. As the PCSI index was low in space use as a tangible factor, it was found that the current level can be maintained instead of improvement. Conclusions - To improve the health screening medical service quality, it is required to focus on process factors (adequate waiting hours, emergency response for complications, prevention of infection) and supportive factors (complaint response team) among service qualities perceived by users. It is proposed to ensure continuous efforts to manage and reinforce priorities as a direction for future improvement in health screening service.

• 한국식품영양과학회지
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• 제8권1호
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• pp.9-14
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• 1979

The consumption of catchup is increasing due to the raising of income level and food industry and westernization of dietary life followed by economic growth. In this paper I picked up three kinds of food produced by two foreign food companies and three kinds of food by two domestic companies. The average results by experimentation on the nutritive ingredients and the standard quality was as follows; A. Nutritve ingredients; 1) Water content a) Domestic 68.3% b) Foreign 69.1% 2) Protein content a) Domestic 2.2 g b) Foreign 2.1 g 3) Fat content a) Domestic 0.1 g b) Foreign 0.1 g 4) Carbohydrate content a) Domestic 25.1 g b) Foreign 24.6 g 5) Mineral content (Ash) a) Domestic 4.4 g b) Foreign 3.9 g 6) Calcium content a) Domestic 33.5 mg b) Foreign 24.2 mg 7) Phosphorus content a) Domestic 16.1 mg b) Foreign 24.2 mg 8) Vitamin C content a) Domestic 14.6mg b) Foreign 16.0 mg B. Standard quality 1) Remains after evaporation a) Domestic 41.7% b) Foreign 38.4% 2) Free mineral acid content a) Domestic none b) Foreign none 3) Tar chromatophore a) Domestic $trace(Acid)^+$ b) Foreign none 4) Heavy metalic $elements^*$ 5) Sodium chloride content a) Domestic 3.3% b) Foreign 3.3% 6) pH level a) Domestic 3.83 b) Foreign 3.76 + The tar chromatophore elements could not be accurately measured by chromatography. * The heavy metalic elements were both under safety levels in the domestic and foreign products.