• International Journal of Costume and Fashion
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• v.8 no.1
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• pp.65-74
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• 2008

Religion is deeply connected with human culture and life, and affects all areas of religious people's lives. The aim of this study was to find out how fashion-conservativeness of religious people and non-religious people differ in Korea. Ten religious people and ten atheists all in their twenties were interviewed to find out the differences between religious people and non-religious people related to their viewpoints on clothes. The twenties age group was selected because people in their twenties are sensitive to fashions and styles, and a fair proportion of males and females were selected. The subjects were asked demographic questions, questions about their religion and faith, whether or not they thought they were conservative or affected by religion, and finally, what they thought of photographs of certain styles. 12 photographs from the 2006-7 F/W collections of London, Paris, New York and Milan were presented to the subjects. The photographs were from the Vogue U.K. website and divided into 6 major styles based on verbal evidence used to describe the collections in catwalk reports: "Sexy," "attitude/confidence," "luxury," "sophisticated/chic," "feminine," and "rock." In conclusion, religious people were found to be more conservative than non-religious people in their twenties because they prefer more conservative and covered up styles, have more negative views of bold and skin-showing trends, and regard some styles to be too sexy when non-religious people do not.

• The Research Journal of the Costume Culture
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• v.6 no.4
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• pp.26-38
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• 1998

This paper is based on a survey of consumers 'opinions on underwears. The questions in the survey dealt with what materials were used to manufacture underwears, which underwears were worn together in combinations, and how comfortable underwears were. In addition, the respondents were asked about how many pieces of different underwears they posses. Through such research, this paper aims to provide a guide to manufacturing domestic underwears that are competitive against foreign bands. 336 women in their twenties, thirties, forties and fifties from Seoul and it's suburbs were surveyed. Statistical analysis was performed by calculating the average, frequency and standard deviation, and through one-way analysis and the Duncan test. The following are the results of the study : 1. Consumers were moderately satisfied with Korean-made underwears. In order to complete with foreign brands, products with high consumer-satisfaction levels must be produced. 2. Upper garments usually consisted of brassieres with shoulder straps and sleeveless shirts. For lower underwears, most people tended to wear panties under girdle, with garlets on top. This is most likely the resut of more people wearing slacks than skirts. 3. Consumer in their twenties had anaverage of 1.71 slips, while those in their thirties had 3.07, those in their forties and 3.25, and people in their fifties had 3.88 slips. Thus the number of slips a consumer possesses increases as age increases. for socks, people in their twenties had 7.4 pairs on average, those in their thirties had 5.5, those in their forties had 6.7, and those in their fifties had 5.3. Thus, those in their twenties possessed the most number of socks. Consumers in their twenties also had the largest proportion of socks among all the types of hosiery combined, with 47.1% of their hosiery being socks. 4. Consumers did tend to prefer cotton underwears, but according to the type of underwears, producting using mixed fabrics of cotton and synthetic fibers were also frequently worn. 5. The shape and form of underwear that consumers prefer in a ceratin time frame varies according to the latest fashion in outer wear. Therefore, planning design of underwear products by predicting the future trend of outer wear fashion is necessary.

• Journal of Korean society of Dental Hygiene
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• v.4 no.1
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• pp.65-79
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• 2004

There are two purposes in this study. The first one is to collect some oral health information through the investigations upon the oral health care of Korean adults. Referring to the result of the investigation. I wanted to furnish fundamental data with oral health education for each age and with a publicity booklet editing. That is the second purpose of this research. Among the people who visited Seo-gu Public Health Center in Kwang-ju, 207 people answered the questionnaires. There were 86 men and 121 women from the 20-aged to the 59- aged. The questionnaires covers knowledge aquisition path for dental caries prevention, the cognition degrees for the causes of dental caries and its prevention, the cognition degrees for the causes of periodontal disease and its prevention, the degrees for oral health methods, and the importance of oral health. The conclusions are as follows; 1. The cognition degree for dental caries prevention: The cognition for pit and fissure sealant was appeared most highly in thirties by 85.3%. but 62.1 % in fifties was answered, "Never heard". The cognition degree for fluoride application was appeared most highly in thirties by 73.5%. and the cognition degree for water fluoridation was most highly in forties by 54.2%. 2. The knowledge for pit and fissure sealant was acquired mostly through dental hospital in every age by 54.2%. 3. The knowledge for fluoride application was learned mostly through dental hospitals in twenties and thirties by 32.7%. and mostly through TV or radio health programs in forties and fiftieseach by 35.7% and 50.0%. 4. The knowledge for water fluoridation was acquired through TV or radio programs in all ages such as twenties. thirties. forties and fifties. Its rate was 57.8%. 5. The cognition degree of the cause of dental caries: 53.1 % of all ages think that dental caries can most frequently be caused by being lack of toothbrushing. 6. The cognition degree of the cause of periodontal disease: 58.5% people of all ages think that both dental plaque and calculus might be the main cause of periodontal disease. 7. The cognition degree of dental caries prevention: 72.8% people think that dental caries can be prevented by right tooth brushing method. and 8.7% people think that they can be prevented by scaling. However, 10.7% people of them were not interested in dental caries prevention. 8. The importance of oral health: 35.3% people think that teeth health is the most important, and 63.8% people think oral health is one of the most important health problems. Forties answered that tooth health was the most important thing, and fifties. thirties and twenties followed in the order. 9. The cognition for oral health maintenance: all ages(twenties. thirties. forties. and fifties) answered that right toothbrushing method was the best way to keep oral health by 69.1%.

• Genomics & Informatics
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• v.18 no.4
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• pp.45.1-45.5
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• 2020

With the ongoing rise of coronavirus disease 2019 (COVID-19) pandemic across the globe, interests in COVID-19 antibody testing, also known as a serology test has grown, as a way to measure how far the infection has spread in the population and to identify individuals who may be immune. Recently, many countries reported their population based antibody titer study results. South Korea recently reported their third antibody formation rate, where it divided the study between the general population and the young male youths in their early twenties. As previously stated, these simple point estimates may be misinterpreted without proper estimation of standard error and confidence intervals. In this article, we provide an updated 95% confidence intervals for COVID-19 antibody formation rate for the Korean population using asymptotic, exact and Bayesian statistical estimation methods. As before, we found that the Wald method gives the narrowest interval among all asymptotic methods whereas mid p-value gives the narrowest among all exact methods and Jeffrey's method gives the narrowest from Bayesian method. The most conservative 95% confidence interval estimation shows that as of 00:00 November 23, 2020, at least 69,524 people were infected but not confirmed. It also shows that more positive cases were found among the young male in their twenties (0.22%), three times that of the general public (0.051%). This thereby calls for the quarantine authorities' need to strengthen quarantine managements for the early twenties in order to find the hidden infected people in the population.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.1 s.178
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• pp.209-215
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• 2006

The present study purposed to examine differences between 20s and 40s in visuospatial performance, the number of activated yokels and cerebral lateralization using functional Magnetic Resonance Imaging (fMRI). For this study, eight college students in their twenties (21.5 years on the average) and six adults in their forties (45.7 years on the average) participated in the experiment. Functional brain images were taken from 37 MRI using the single-shot EPI method. Compared to the twenties the forties showed lower visuospatial performance and longer reaction time. In addition, compared to the twenties the forties had a smaller number of activated yokels and less cerebral lateralization. The results of this study show that people's visuospatial performance and number of activated yokels decrease with aging. In addition, they also suggest that cerebral lateralization decreases in order to supplement the lowering of visuospatial performance, which in turn symmetrizes the activation of the left and right hemisphere.

• The Research Journal of the Costume Culture
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• v.7 no.4
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• pp.99-110
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• 1999

In order to help the marketers of the men\`s casual wear brands establish the marketing strategies to their target consumers, it is the purpose of this study to investigate on the variables affecting the casual wear purchase behavior of men in twenties, thirties and forties, and to clarify the differences of casual wear purchase behavior according to their age, The subjects were 429 men in their twenties, thirties and forties living in Seoul and data were analyzed by frequency, percentage, mean and standard deviation, x², ANOVA and Duncan\`s test. The results were as follows : (1) Significant differences were found among men in twenties, thirties and forties according to the self-image. Men in forties favored the conservative and not-noticeable image of casual wear, however, men in twenties and thirties favored those of the active, sexy, and distinctive image. (2) Significant differences were found among men in twenties, thirties and forties according to the importance of the store attributes such as convenience of transportation and parking place, clothing in vogue, and various merchandise. Men in thirties and forties put more importance on convenience of transportation and parking place. Men in forties put more importance on various merchandise than men in twenties and thirties. (3) Significant differences were found among men in twenties, thirties and forties according to general purchase behavior of casual wear. * Differences of the use of information according to age Majority of the men consulted the T.V., radio and people in their boundaries * Differences of the clothing purchase frequency according to age Men in twenties buy more clothing than other age groups. Men in twenties buy the clothing every one month and every three months and men in thirties and forties buy the clothing every three months and every six months. * Differences of the shopping day according to age Majority of the men buy the clothing on Saturday and Sunday. However men in twenties buy the clothing more on weekdays than other age groups. * Differences of the shopping place according There were not significant differences among three different age groups and majority of the men found out to utilize the department store. * Differences of the influence of the partners according to age Men in twenties found out to rely on their own decisions but men in thirties and forties found out to depend on their wives(loves). * Differences of the selection standards of casual wear according to age There were not significant differences according to age and adult males found out to select the casual wear by design, quality price in sequence.

• Journal of Digital Convergence
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• v.18 no.12
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• pp.595-606
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• 2020

To find out the a Study on experiential consumption and development of the customized cosmetics on female university students in their 20s, this study conducted sampling using probability sampling from cosmetics major students in S City from September 1 to October 30, 2020. In this study, a study model was designed for a total of 30 people and studied as an Experience-Consume Experimentation. First, the result of the pre-purchase survey revealed that skincare cosmetics had the highest percentage for being selected by 30 people for "the preferred cosmetic type per the perception regarding customized cosmetics." Second, the result of the pre-purchase survey revealed that 11 people answered skincare cosmetics, 1 person answered shade cosmetics, and 2 people answered fragrance products (perfume, diffusers, etc.) for "the experience type for customized cosmetics." Third, the result of the post-purchase survey revealed that 29 people are willing to recommend the products, while 1 person is not. For the appropriateness of the price, 23 people answered yes; 7 people answered no. for the characteristics of the experience, 24 people (80%) answered that they selected ingredients according to their skin type; 9 people answered that the price is cheap considering they received 1:1 consultation; 18 people answered that they made a choice per their preferences (skin type) rather than per brands; 3 people answered that their self-esteem is stronger as if they received personal care. Therefore, customized cosmetics are expected to increase the attractiveness and purchase rate of female students in their twenties given that 'Human Touch,' genetic analysis, and 'hyper-customization technology,' which requires new development of customized cosmetics experience consumption for female college students in their 20s.

• Journal of Fashion Business
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• v.18 no.5
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• pp.1-14
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• 2014

The purpose of this study was to analyze body mass index of women in their twenties and investigate the relationships of body attitude and clothing attitude. To achieve the purposes of this study, a questionnaire was conducted with 398 people from May 2 to May 30, 2013. The final data was analyzed with spss 18.0 program. The results were as follows: First, I found that body attitude had this order: Feeling fat, Lower body fatness, Salience of weight and shape, Attractiveness, Strength and fitness, and Body disparagement Secondly, there were significant differences of body attitude based on demographic characteristics and body mass index. Thirdly, I found that clothing attitude was classified into four factors of Personality pursuit, Body complement, Appearance ostentation, and Social approval. Fourthly, there were significant differences of clothing attitude based on demographic characteristics and body mass index. Fifthly, there were significant relations of body mass index, body attitude, and clothing attitude of women in their twenties. Thus, I found that body mass index and body attitude were related to clothing attitude.

• Journal of Korean Ophthalmic Optics Society
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• v.3 no.1
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• pp.129-136
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• 1998

I obtained result like these to practice accommodation test using Spherical Add method and Cross cylinder lens method. The 242 eyes(121 persons) in test was the young and middle age people and their age was from 19 to 41. 1. Using Spherical Add, I tested accommodation. The twenties's limits of accommodation were 9~13 Diopter, and thirties to fourties's limits of accommodation were 6~8.5 Diopter. 2. Using Cross cylinder lens in the test of accommodation twenties's average accommodation limits were appeared 6.13 Diopter~10.13 Diopter, thirties average accommodation limits were 5.75 Diopter~8.75 Diopter and fourties's average accommodation limits were 4.38 Diopter~7.25 Diopter. All men women have had more good accommodation of the horizontal direction than the vertical direction. 3. Using Spherical Add method and Cross cylinder lens method, the results of accommodation were shown like these. Accommodation that measured with spherical add method was more big than cross cylinder's accommodation measuring method. Finally I found the fact accommodation decreases as age goes.

• Journal of the Ergonomics Society of Korea
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• v.25 no.2
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• pp.33-42
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• 2006

It is important to analyze the characteristics of normal gait in clinical and biomechanical aspects. Although gait characteristics can be varied by anthropometric, racial and cultural factors, normal gait studies have been performed mostly for Western people. The present study conducted a gait analysis for Korean young adults and compared the gait characteristics with those of Western people for the establishment of Korean normal gait data. A total of thirty-two adults in twenties(20 males and 12 females) were participated in the gait experiment and their spatio-temporal and kinematic/kinetic gait characteristics were analyzed. The comparison of the gait characteristics between Korean and Western people, revealed that the stride length and walking speed of Korean were significantly smaller than those of Western people by 0.1~0.3m and 0.15~0.40m/s respectively. And the knee abduction moment of Korean was larger than that of Western people, while the other moments(such as hip flexion/extension moments, abduction/adduction moments, and knee flexion/extension moments) were smaller than those of Western people. The ranges of joint angles between the gait studies were largely different with each other, but most of motion patterns and excursions were similar.