• 한국산학기술학회논문지
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• 제12권5호
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• pp.2353-2359
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• 2011

최근 그린 IT의 요구와 컴퓨터 자원에 대한 효과적인 사용요구가 증가되면서 클라우드 컴퓨팅에 대한 필요성이 날로 증가되어 가고 있다. 2009년 버클리 대학에서는 클라우드 컴퓨팅을 위협하는 10대 요소를 발표하였으며 그 중에서 보안과 관련된 사용자 인증에 대한 문제가 가장 시급하게 해결되어야만 한다. 이에 본 논문에서는 클라우드 컴퓨팅 환경에서 효과적인 사용자 인증 프로토콜을 제안하고자 한다. 기존의 대표적인 사용자 인증 기법인 커베로스의 티켓 발행을 통해 사용자 인증에 대한 안전성을 보장하고, PKI의 사용자 인증을 통해 사용자 인증과 서비스 인증을 거치는 두 단계의 인증 처리 절차를 정의하였다. 제안한 인증 프로토콜에 대한 효율성과 안전성에 대한 검토 결과, 기존의 PKI 보다 구조적으로 복잡하지 않고 커베로스 보다 수행절차 및 시스템 구성을 간소화하여 응답시간을 줄였다.

• 한국비블리아학회지
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• 제22권2호
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• pp.181-200
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• 2011

본 연구는 국립어린이청소년도서관이 청소년의 독서흥미를 고취하기 위하여 전국 학교도서관을 대상으로 수행하고 있는 청소년 독서진흥 프로그램의 운영을 심층적으로 평가하였다. 본 연구를 위하여 2007년부터 2010까지 이루어진 '1318 책벌레들의 도서관점령기' 프로그램에 참여한 학교도서관 사서들을 대상으로 그 운영전반에 대한 체계적인 설문조사를 실시하였고 또한 독서진흥 프로그램의 경험이 풍부한 학교도서관 사서들과의 표적집단 심층인터뷰를 실시하였다. 조사분석 결과 첫째, 사업성과에 대한 응답자의 만족도는 매우 높게 나타났으며 학생들의 인지, 정서, 사회성 발달에 효과성이 있는 것으로 평가하였다. 둘째, 기획과정, 계획과정, 운영과정의 만족도 중 계획과정, 운영과정의 만족도가 성과만족도를 예측하는 영역으로 확인되었다. 셋째, 서술형 문항에서 프로그램의 원활한 지원과 효율성을 위해 전문인력 충원 및 연구와 조직 확대의 필요성이 거론되었으며 다양한 콘텐츠 및 매뉴얼 개발과 보급 등이 제언되었다.

• 한국의류학회지
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• 제33권10호
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• pp.1590-1600
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• 2009

This study investigates the fashion lifestyles and the effect on clothing purchase behavior by female consumers living in Mumbai India. Data were collected from 129 Indian women in their teens to thirties living in Mumbai and were analyzed by factor analysis, cluster analysis, one-way ANOVA, Duncan test, ${\chi}^2$-test, frequency analysis using SPSS 12.0. The results of this study are as follows. Five factors of fashion lifestyle are identified: fashion consciousness, price orientation, advertisement/brand orientation, being aware of others, and tradition orientation. Female consumers were classified into four groups based on fashion lifestyle factors: display/brand oriented group, active profit seeking group, fashion oriented group, and a tradition oriented group. There were significant differences among the fashion lifestyle groups on five criteria (latest fashion, price, commonality with existing clothing, size, and the distance to the store) out of the 13 criteria. The display/brand oriented group showed high scores on the latest fashion and size. The active profit-seeking group generally showed high scores on all five factors. The fashion oriented group showed high scores on latest fashion and commonality with existing clothing when buying clothes. Finally, the tradition oriented group showed high scores only on the distance to the shop, while they (the tradition oriented group) showed low scores on the other criteria. The examination on the actual conditions of clothing purchase among fashion lifestyle groups showed that only the monthly expenditure for clothing is significantly different. The display/brand oriented group and active profit seeking group spent more on clothing than the other two groups.

• 한국안광학회지
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• 제3권1호
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• pp.243-247
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• 1998

본 연구는 한국의 청소년을 대상으로 외안부의 구조를 조사하였다. 그 결과는 다음과 같다. 1. 내안각간의 거리에서 평균 길이는 38-40mm이나, 남성이 여성에 비해서 길다. 2 검열의 길이에서 평균은 35-37mm이며, 우안과 좌안의 결과는 비슷하였다. 그러나 남성은 여성에 비해서 길게 되었다. 3. 검열의 폭에 대해서 평균 폭은 7-8mm이며, 남성과 여성의 결과는 비슷하였다. 4. 근거리에서의 동공간 거리는 평균 29-33mm이었으나, 20대에서는 남성의 좌안은 우안에 비해서 길다. 한편 여성은 그 결과가 반대로 된다. 5. 원거리에서의 PD는 평균 31-32mm 이다. 그러나 10대에서는 남성과 여성은 비슷한 결과를 가진다. 한편 남성은 여성에 비해서 길다.

• Annals of Clinical Neurophysiology
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• 제3권1호
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• pp.31-36
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• 2001

Background & Objectives : Fractal Dimension(FD) could be an index of correlation between variable parameters in non-linear chaotic signals. We tried to demonstrate that EEG wave is compatible with chaotic waves by measuring the Lyapunov exponent index and compared the difference of FD between variable age groups(teens, 30's, 50's) Methods : We estimated the Lyapunov exponent index and the FD from digital EEG data among five persons in each normal age groups by using the software which is programmed in our laboratory. Statistical analysis was done with SPSS win 8.0. The statistical differences of Lyapunov exponent index and FD between each electrodes and each age groups were done with ANOVA and paired sample t-test. Result : The Lyapunov exponent indexes were larger than 1 in each electrode and age group. There is no statistical difference in FD between each electrodes and each age groups. Except in 30th age group. In this group the FD of right hemisphere is larger than that of left hemisphere. Conclusion : The result of Lyapunov exponent index means EEG wave is a non-linear chaotic signal. And the results of FD suggest that chaotic parameters of right hemisphere is larger than those of left hemisphere at rest at least in younger people. We think that chaotic parameters can be a useful tool in investigating the variable diseases or brain states.

• 대한지역사회영양학회지
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• 제16권5호
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• pp.559-568
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• 2011

The purpose of this study was to investigate the intakes and perceptions of convenient breakfast related to age and family type. The survey included 545 men and women living in Seoul from June to July. Questionnaire items covered their age, gender, family types, breakfast intakes and preference for convenient breakfast menu. As a result, there were significant differences in the number of breakfast intakes per week according to family types; large families recorded the highest frequency in "I have breakfast everyday" and the couple-only families and nuclear families scored relatively high numbers. In terms of the type of breakfast, the first choice was "rice and side dishes" across all the age groups (69.3%). There were differences in the preference of convenient breakfast in "bread", "cereal", "rice cake", "sunsik", and "rice gruel" by different age. The teens exhibited the highest preference of bread (5.63), and cereal (5.53) for breakfast; those who were in their fifties for rice cake (5.42). Both forties and fifties showed the higher preference of sunsik (4.58, 4.76) and rice gruel (5.89, 5.77) than other age groups. As for the preference for convenient breakfast according to family types, single person families displayed the highest preference of bread (5.42) and cereal (5.75). Couple families showed higher preference of rice gruel (5.82) than other family groups. The preference level for "rice cake" was similar among all the family types. As a result, it is suggested that the development of various breakfast menus considering age groups and family types is needed so that modern people can enjoy breakfast in terms of quality and quantity in their busy daily life.

• 한국치위생학회지
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• 제12권2호
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• pp.251-260
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• 2012

Objectives : The purpose of this study was to examine the knowledge of people in general about orthodontic treatment and their attitude to that by conducting a survey in a bid to provide information on the improvement of their incorrect awareness of orthodontics and on the development of clinical orthodontic treatment. Methods and Results : The subjects in this study were 389 people in general who resided in Seoul and Gyeonggi Province. A self-administered survey was conducted, and the findings of the study were as follows: 1. As for awareness of orthodontic treatment among the people in general by gender, the women knew better about orthodontic treatment than the men, and the gender gap was significant(p<0.05). 2. Concerning satisfaction with the shape and arrangement of the teeth by age, those who were in their 20s were most satisfied, and the teens were satisfied the least. There were significant gaps according to age (p<0.05). 3. As a result of checking the degree of their inconvenience about the use of chewing teeth by age, the people who were in their 30s felt the most inconvenience, and the gap between them and the others was significant(p<0.01). 4. As a result of asking them whether they had an intention to receive orthodontic treatment, the women had a more intention to do that than the men(p<0.001). By age, the younger respondents had a more intention, and the gaps between them and the others were significant(p<0.001). 5. As a result of analyzing their perception of the positives of orthodontics by gender, the women took a more positive view of it than the men, and their gap was significant(p<0.01). Conclusions : When orthodontic treatment or orthodontic treatment counseling is provided to orthodontic treatment patients or people in general in the field of clinical dentistry, it should be noted that the way patients and people in general look at orthodontic treatment is different according to their age and gender, and they should be informed of the positives of orthodontic treatment to step up the development of orthodontic treatment.

• 한국생활과학회지
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• 제11권4호
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• pp.347-355
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• 2002

The purpose of this study was to find possible solutions to the aged-related problem that is emerging as one of serious social issues in Korea by investigating the images young people have toward the aged. The questionnaire-based survey for this study was conducted with 643 middle school students representing teens and 523 undergraduates representing young people in the twenties, who were 592 from Daegu and 574 from Gwangju. It was carried out from December 2000 to March 2001. The data were analyzed in frequency(N), percentage(%), mean(M) and standard deviation(SD) through the SPSSWIN 10.0 program, $x^2-test$ and reliability test. The findings are summarized as follows. 52.5% of respondents reported that they had the experience in living together with their grandparents, while the number of respondents currently living together with their parents just accounted for 17.6%. In the question about the sense of value for family life, it was shown that the traditional idea that an eldest son or other son has the duty of supporting parents was positively changed to one that any of sons or daughters may support parents. The entire image toward the aged appeared to be positive with the mean value of 3.62. Things associated with the aged were the respect-for-aged house and a stick in that order. The images young people perceive towards the aged were largely divided into the 13 items image including the community centers for the aged.

• 한국안광학회지
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• 제4권2호
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• pp.91-96
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• 1999

본 연구는 시표와 조명 사이의 관계에 대한 조사를 한 수행한 것이다. 피검자는 10대와 20 대에 있는 남성과 여성을 하였다. 사용된 검사도구는 미국에서 만든 B-VAT BVS(Mentol)였으며, 조명은 임상 검사실에서 100LUX의 저조명과 1500LUX의 고조명을 하였다. 결과는 다음과 같다. 1. 조명의 다른 형태에서도 시력의 변이는 비슷하였다. 2. 남성 10대 피검자에서 스넬렌 시력은 저조명을 사용했을 때에 숫자시력보다 좋았다. 그러나 란돌트 시력은 저조명과 고조명을 사용했을 때에 비슷한 결과를 나타내었다. 3. 그들의 20대 남성피검자에서는 숫자시력은 저조명하에서는 란돌트 시력과 스넬렌 시력이 더 좋았다. 4. 여성 10대 피검자에서, 스넬렌 시력은 저조명하에서는 란돌트 시력과 숫자시력보다 좋다. 5. 그들의 20대 여성 피검자에서, 스넬렌시력, 란돌트시력, 숫자시력은 저조명하에서 높았다. 6. 조명의 다른 형태에서 시력의 변이는 0.3 또는 0.4이다. 7. 남성과 여성은 시력에서 비슷하였다.

• 대한한방소아과학회지
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• 제15권2호
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• pp.69-73
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• 2001

The neurofibromatosis (NF) are a set of genetic disorders which cause tumors to grow along various types of nerves and, in addition, can affect the development of non-nervous tissues such as bones and skin. NF causes tumors to grow anywhere on or in the body. It also leads to developmental abnormalities. For example, individuals with NF have a higher incidence of learning disabilities. Neurofibromatosis(NF) has been classified into two distinct types: NF-I and NF-II. neurofibromatosis 1(NF-I), also known as von Recklinghausen NF or Peripheral NF, occurring in 1:4,000 births, is characterized by multiple cafe-au-lait spots and neurofibromas on or under the skin. Enlargement and deformation of bones and curvature of the spine (scoliosis) may also occur. Occasionally, tumors may develop in the brain, on cranial nerves, or on the spinal cord. About 50% of people with NF also have learning disabilities. Neurofibromatosis 2(NF-II), also known as Bilateral Acoustic NF(BAN), is much rarer occurring in 1:50,000 births. NF-II is characterized by multiple tumors on the cranial and spinal nerves, and by other lesions of the brain and spinal cord. Tumors affecting both of the auditory nerves are the hallmark. Hearing loss beginning in the teens or early twenties is generally the first symptom. We reported a 10-year-old female patient with NF-I, she has pain and edema in left leg, no symptoms of NF.