• 컴퓨터교육학회논문지
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• 제17권6호
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• pp.93-102
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• 2014

모바일 오피스 환경이 점차 증가하여 스마트폰 태블릿 PC 기기 등 모바일 장비가 기업, 학교, 공공기관 등 장소에 구애 받지 않고 많이 활용되고 있다. 이에 따른 보안 위협도 지속적으로 발생하여 효과적인 보안 관리정책과 기술적 보안이 요구되고 있다. 이러한 BYOD(Bring Your Own Device) 환경에서 기술적인 보안을 위한 해결책으로 네트워크기반통제 솔루션, MDM(Mobile Device Management), MAM(Mobile Application Management), MCM(Mobile Contents Management)등이 출시되어 정보 보안에 활용되고 있다. 그러나 BYOD의 보안 솔루션을 선정함에 있어 표준 가이드라인 및 품질 평가 기준이 미흡하여 품질 평가 모델이 요구되고 있다. 본 논문에서는 최근 가장 범용적으로 사용되고 있는 MDM 솔루션을 선택하여 그 특징을 살펴보고 ISO/IEC25010의 소프트웨어 품질특성에 기반을 두어 제품 속성 분석 및 품질 평가 요소를 도출, 관련 메트릭스를 산출하였다. 품질 평가 모델 검증을 위해 보안점검 항목 및 테스트 수행 방안을 정하고 사례연구를 통하여 메트릭스를 적용하고 분석하였다.

• 한국산학기술학회논문지
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• 제17권6호
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• pp.527-536
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• 2016

본 연구는 국내 소비자들을 대상으로 기능성화장품 선택속성 항목의 중요도와 만족도를 실시하여 소비자들이 중요하게 생각하지만 만족도가 낮은 항목, 개선점 등을 분석하여 기능성화장품 개발 시 소비자들의 요구를 반영함으로써 화장품 시장에서의 경쟁력을 확보하고 판매 및 홍보활성화를 위한 기초자료를 제공하고자 하였다. 본 연구의 대상은 서울 및 경기지역에 거주하고 있는 20대 이상 일반 소비자를 대상으로 2015년 2월 23일부터 3월 30일까지 5주간 설문조사를 실시하였으며, 447부(회수율 88.9%)의 실증자료를 얻어 SPSS WIN 21.0프로그램을 이용하여 분석하였다. 본 논문은 성별에 따른 기능성 화장품 선택속성 항목의 중요도-만족도 분석에 관한 연구로서 요인분석 결과 17개의 속성을 총 4개의 요인(기능성 요인, 표시 요인, 홍보 요인, 제품 요인)으로 분류하였다. 또한, 각 요인들의 내적일관성을 검정한 Cronbach's ${\alpha}$값은 모두 0.5 이상으로 신뢰성을 확보한 것으로 나타났다. 성별에 따른 기능성화장품 선택속성 항목의 중요도와 만족도 차이 결과 중요도의 전체평균은 여성이 5.89점/7점으로 남성의 5.66점/7점보다 유의적으로 높게 나타났고(p<0.001), 남 여 간의 큰 차이를 보이는 속성들로 '주름개선', '미백기능', '기능성', '유통기한', '전성분표시제', '다양한 홍보' 등으로 나타났다. IPA분석 결과, 남성의 경우 II사분면의 항목으로는 '가격', '기능성', '발림성', '전성분표시제'로 나타났으며, 여성의 경우 '가격', '미백개선', '주름개선', '기능성', '전성분표시제'로 나타났다. 따라서 화장품 관련 업체 및 기업은 기능성화장품 개발 시 남 여 소비자가 공통적으로 만족도가 낮다고 응답한 '가격', '기능성', '전성분표시제' 항목에서 우선적으로 집중 개선해야 할 것으로 판단된다. 특히 '가격'적인 면에서는 합리적이고 경제적인 가격 책정이 필요할 것으로 사료된다.

• Journal of Information Processing Systems
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• 제13권3호
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• pp.599-617
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• 2017

Due to the rapid growth and expansion of the Internet, the digital multimedia such as image, audio and video are available for everyone. Anyone can make unauthorized copying for any digital product. Accordingly, the owner of these products cannot protect his ownership. Unfortunately, this situation will restrict any improvement which can be done on the digital media production in the future. Some procedures have been proposed to protect these products such as cryptography and watermarking techniques. Watermarking means embedding a message such as text, the image is called watermark, yet, in a host such as a text, an image, an audio, or a video, it is called a cover. Watermarking can provide and ensure security, data authentication and copyright protection for the digital media. In this paper, a new watermarking method of still image is proposed for the purpose of copyright protection. The procedure of embedding watermark is done in a transform domain. The discrete cosine transform (DCT) is exploited in the proposed method, where the watermark is embedded in the selected coefficients according to several criteria. With this procedure, the deterioration on the image is minimized to achieve high invisibility. Unlike the traditional techniques, in this paper, a new method is suggested for selecting the best blocks of DCT coefficients. After selecting the best DCT coefficients blocks, the best coefficients in the selected blocks are selected as a host in which the watermark bit is embedded. The coefficients selection is done depending on a weighting function method, where this function exploits the values and locations of the selected coefficients for choosing them. The experimental results proved that the proposed method has produced good imperceptibility and robustness for different types of attacks.

• 한국의상디자인학회지
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• 제20권1호
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• pp.1-16
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• 2018

The purposes of this study were to investigate actual use, design preference, and purchasing behaviors of bedding among married women in their 30s to 60s, and to determine the differences by age groups on these variables. The subjects were 623 married women and the research method was survey. The data were analyzed by descriptive statistics, cross tab analysis, multiple response analysis, ANOVA, and Duncan's multiple range test, using SPSS program. The results were as follows. First, on the actual use of bedding, the possession quantity of the bed cover and mattress was 2~4 while bedclothes and pillow was 7~8. The period of use of bedding was about 2~4 years and the frequency of washing was about 2~3 times a month. Second, married women generally preferred white and pastel tones, floral patterns, cotton fabrics, and a clean and comfortable image on bedding designs. Third, on the purchasing behaviors of bedding, married women considered functional damage and health & sanitary aspects as important purchase purposes. The most important selection criterion was fabric. Price, tactility, functionality, and manageability were also important criteria. Married women generally used the internet and store displays as important information sources, and considered bedding specialty stores as important purchase places. They generally spent about 200,000~300,000 won a year to purchase bedding. Fourth, the actual use, design preference, and purchasing behaviors of bedding showed many differences by age group. Therefore, it is needed to establish product development and marketing strategy of bedding, considering customers'age variable.

• 디자인학연구
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• 제16권3호
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• pp.183-190
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• 2003

산업디자인에서 디자인 대상에 대한 철저한 분석과 이해는 필수적인 선행요건이다. 그러나 디자인 프로세스에서 이러한 고려사항을 모두 충족시키고 우수한 제품을 디자인하기 위한 가이드가 되는 데이터를 얻기란 쉬운 일이 아니다. 이에 본 연구에서는 직교배열표를 이용하여 신뢰도를 높일 수 있는 산업디자인 기초모델을 제안한다. 특히 실험을 간편화하고 결과치의 유효성을 높이고자 하는 직교배열표 본래의 목적은 산업디자인 프로세스에서 충분히 달성함과 동시에, 디자인 프로세스의 동시화로 디자인 요소의 비정량적 데이터를 정량화하고 그에 대한 상호작용에 대해서 알아보았다. 이 방법은 또한 산업디자인에서 고려사항을 도출할 수 있는 방법을 제시함으로써 디자이너들이 제품개발에 있어서 더 완성도가 높은 제품을 개발할 수 있고, 데이터를 실증해 보임으로써 정확한 판단을 내리는데 도움을 줄 수 있다.

• 한국의상디자인학회지
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• 제12권4호
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• pp.15-28
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• 2010

This study was intended to present basic materials for the direction of product planning and marketing strategy to increase the market share of men's underwear. For this purpose, it attempted to classify the groups according to the benefit of pursuing men's underwear and analyze the differences in purchase behavior among the segmented groups. The specific purposes of the study were to investigate the purchase behavior of men's underwear, to segment the consumers into groups according to underwear benefits sought, to investigate the differences in purchase behavior among the groups, and to investigate the differences in demographics among the groups. The questionnaire was distributed to men aged the 20s to the 40s living in Seoul. A total of 297 questionnaires were used for the final analysis. As a result, the following findings were obtained. It was found that 84.8% of the respondents showed there was no favorite underwear brand. They showed the favorite color of translucent color, the favorite style of trunk and brief, the favorite post-processing of silver nano, deo processing, and the favorite material of charcoal. In purchasing men's underwear, the respondents showed a preference for simple image, and the discount store as the place of purchase. The results also showed that there were four groups of underwear benefits sought: sex appeal/individuality, comfort, practicality, and fashion/brand groups. In regard to the group differences, there were significant differences in underwear purchase motives, underwear preferences, store selection criteria, and demographics.

• 한국식품영양과학회:학술대회논문집
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• 한국식품영양과학회 2001년도 International Symposium on Food,Nutrition and Health for 21st Century
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• pp.52-60
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• 2001

Purpose: We performed a randomized, double-blind, placebo-controlled trial in mild to moderate myopia patients to evaluate the benefit of taking a nutrient supplement containing anthocyanoside oligomers for improving nocturnal visiual function and/or clinical symptoms. Methods: The subjects included have refractive error between -lD(Diopters) $\~$-8D in both eyes, symptoms of decreased night vision and asthenopia based on the scoring result of a pre-structured questionnaire, and abnormal results of mesopic contrast sensitivity(MCS) screening test showing abnormal curve of contrast sensitivity in the middle and high frequency level, between 6.0 and 30.0 CPD(Cycles per degree) at mesopic condition(-2$\~$0 log cd/$m^2$). Total 60 people who qualified the criteria above were enrolled and the subjects were instructed to take the investigational product (anthocyanoside or placebo) twice daily for a 4 week period. The enrolled subjects were investigated for nocturnal vision performance by MCS and clinical symptoms at their first visit and re-evaluated at post-intervention (4 weeks later). MCS was measured and improvement of contrast threshold level according to each CPD was calculated by subtracting initial values from final values. Age, refractive error, and MCS were compared between the placebo and anthocyanoside. Results: After 4 weeks of drug administration 22 of the anthocyanoside group showed symptom improvement compared to 1 of the placebo group (p=0.000). Contrast sensitivity levels according to each CPD before and after drug treatment showed significant improvement in the anthocyanoside group but not in the placebo group. Mean MCS change of anthocyanoside group is 2.41$\pm$1.91 which showed significant improvement compared to -0.40$\pm$2.47 of the placebo group(p=0.000). MCS changes of anthocyanoside group showed significant improvement compared to placebo group in all levels of CPD(p<0.05). During our investigation none of the subjects complained of specific side effects related to anthocyanoside use. Conclusion: Our results show that under careful selection of people with significant symptoms and definite MCS abnormalities, anthocyanoside oligomers may improve the subjective symptoms and objective MCS results.

• 동아시아식생활학회지
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• 제22권2호
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• pp.315-321
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• 2012

In this study, the product attributes that give customers the estimated benefits and products that can predict the customer's choice conjoint analysis techniques to identify the restaurant affinity markets a new dining concept was to develop. Questionnaire for this study of 400 non-response is negative and insincere characters, except for the final analysis, the questionnaire Part 309 was the target. Conjoint model used in this study Pearson's R is 0.928 ($p$<0.000), Kendall's tau is 0.750 ($p$<0.000) with an orthogonal plan was well suited for profiling attributes are extracted 16. Part of the relative importance of the value of the property to determine the result of analyzing the properties that are most important at the level of the respondents of the induct (38.46%), and followed by price (30.52%), Atmosphere (18.28%), and Exclusive space (12.73%) was followed. Portion of the property value for each analysis among industry preference for the Italian food was highest, a nature-friendly interior atmosphere had the highest affinity Average per price at 10,000 won~30,000 won or less than the amount of affinity was higher location of the restaurant alone, showed that space preferred. Through simulation in a virtual seafood restaurant nature-friendly image, average price per person ranging from 10,000 to 30,000won at an exclusive restaurant was most preferred.

• 대한토목학회논문집
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• 제26권3D호
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• pp.445-451
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• 2006

본 연구는 노후 콘크리트 포장의 아스팔트 덧씌우기에서 발생하는 반사균열을 억제하기 위한 방안으로 노후 콘크리트와 아스팔트 표층 사이에 응력을 흡수할 수 있는 중간층 혼합물을 개발하기 위하여 수행되었다. 고탄성 응력흡수층은 휨 변형과 수평변형으로 인하여 발생하는 균열응력을 흡수 또는 분산 시킬 수 있는 탄성과 유연성, 균일성 및 불투수성이 요구된다. 본 연구로부터 국외제품을 모델로 국산 바인더를 개발 하였으며 이를 사용하여 제작된 혼합물 시편은 시방규격에 만족하였다. 기존 덧씌우기 공법과 비교한 시험으로부터 고탄성 응력흡수 중간층이 설치된 경우 설치되지 않은 경우에 비하여 전단파괴수명과 수평변위저항도는 약 4배가 증가되었으며 표층재료의 선정에 따라 전단파괴수명은 5배, 수평변위저항도는 9배가 증가되어 고탄성 응력흡수 중간층이 반사균열 억제에 우수한 것으로 본 연구에 나타났다.

• 한국의상디자인학회지
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• 제25권3호
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• pp.1-16
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• 2023

The purposes of this study were to investigate bag purchasing behaviors and design preferences of male and female adult consumers, and to find the differences depending on sex and age variable. A survey was conducted on 400 male and female adults from 20s to 50s. The questionnaire consisted of bag purchase behaviors, bag design preferences, and the subjects' demographic characteristics. The data were analyzed by Cronbach's α, factor analysis, x² test and t-test using SPSS. The results were as follows. First, as bag selection criteria, four factors (practicality, symbolism, aesthetics, and economics) were derived, and adult consumers considered economics as the most important among the factors. As for purchasing information sources, three factors (media, human resources, and store) were derived, and adult consumers considered human resources and store information sources more important than media. The main motive for purchasing bags was age and damage of the owned products, and Internet shopping malls were the most common purchasing place. The average annual cost of purchasing bags was 100,000 to 300,000 won, and the frequency of purchase was about once a year. Second, as bag preference images, four factors (individual, romantic, active, and classic image) were derived, and adult consumers preferred classic images the most. The shoulder bag was the most preferred as the bag shape, and black was the most preferred bag color. For the material, natural leather was the most preferred, and for the size, medium size was the most preferred. Third, bag purchasing behaviors and design preferences showed many significant differences according to the sex and age of the consumers. Therefore, the results of this study suggests that bag companies need to establish product development and marketing strategies in consideration of differences according to the sex and age group of adult consumers.