• Transactions of the Korean Society of Mechanical Engineers A
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• v.38 no.6
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• pp.629-636
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• 2014

For surface modification, bulk metallic glass coatings were fabricated using metallic glass powder and a mixture of a self-fluxing alloy or/and hard metal alloys with a heat-resisting property using a high velocity oxy-fuel coating thermal spraying process. Microstructural analyses and mechanical tests were carried out using X-ray diffraction, a scanning electron microscope, an atomic force microscope, a three-dimensional optical profiler, and nanoindenation. As a result, the monolithic metallic glass coating was found to consist of solid particle and lamellae regions that included many pores. Second phase-reinforced composite coatings with a self-fluxing alloy or/and hard metal alloy additives were employed with in-situ $Cr_2Ni_3$ precipitate or/and ex-situ WC particles in an amorphous matrix. The mechanical behaviors of the solid particles and lamella regions showed large hardness and elastic modulus differences. The mechanical properties of the particle regions in the metallic glass composite coatings were superior to those of the lamellae regions in the monolithic metallic glass coatings, but indicated similar trends in matrix region of all the coating layers.

• Journal of Digital Convergence
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• v.12 no.12
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• pp.427-439
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• 2014

This study analyzed the effects of job stress, job burnout, and social support on turnover intention for beauty salon workers in Busan. First, the younger, the higher levels of emotional labor; the younger, the lower education levels, the shorter career, and the lower position, the higher job stress and the higher job burnout; and the younger, the lower education levels, and the fewer days off, the higher turnover intention. Second, directors, designers and the staff had emotional labor, job stress, job burnout, and social support associated with turnover intention. Third, owners and designers had their turnover intention in general affected by emotional control, role stress, supervisor support, and colleague support and had their workplace-related turnover intention affected by emotional control, role stress, colleague support, and depersonalization, while the staff had their turnover intention in general and workplace-related turnover intention affected by supervisor support, colleague support, and depersonalization and had their job-related turnover intention affected by supervisor support.

• Journal of Digital Convergence
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• v.11 no.4
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• pp.147-152
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• 2013

Now, plastic surgery has become the industry for beauty. In order to know the characteristics of high-visit web sites that many people have visited, 33 high visit websites of plastic surgery were compared to 60 benchmark sites of same industry. We selected 34 web site attributes that can be measured objectively from existing studies. For analysis, Multiple Discriminant Analysis(MDA) is conducted for searching what attributes divide two group definitely. The result of this study shows the dividing attributes fall into 2 categories like 'Community', 'Up to date'. Thus, we are able to conclude that high-visit plastic surgery web sites are community-centric site but not contents-centric and are maintained with tide up to date. The methodology employed in this study provides an efficient way of improving satisfaction of visitors of plastic surgery website.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.479-484
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• 2020

In the social atmosphere where the importance of appearance is increasing day by day, efforts and desires of modern people are becoming more active and diversified, and the beauty beauty industry is gradually becoming more specialized and specialized due to these effects. Hair damage is inevitable due to the excessive permanent wave or hair coloring of modern people. However, as the hair is damaged, the cuticle peels off and falls off, and the tensile force decreases and the satisfaction after hair styling or perm decreases relatively. Therefore, it is necessary to manage damaged hair, but since artificial synthetic products occupy most of hair treatment agents on the market, it is necessary to develop a hair treatment product containing antioxidants useful for the human body. In this study, the effect of maple leaf extract on the mechanical change of colored hair was analyzed to investigate the potential of maple leaf extract as a hair treatment agent to improve damaged hair and improve hair health. It is considered that this study will be used as basic data for the development of hair beauty products using natural products in the future.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.115-124
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• 2021

The purpose of this study was to investigate the relationship between the characteristics of beauty information in the SNS environment and consumer attitudes and loyalty of high school students. The subjects of this study were high school students residing in Gwangju, and a total of 375 copies were used for the final analysis. The collected data were analyzed using SPSS V.21.0 program. Summarizing the study results, interactivity and usefulness were key factors in the relationship between beauty information characteristics and high school students' attitude and loyalty in the SNS environment, and information provision, playfulness, and vitality were derived as major factors. Based on the above result rule, it is expected that it will be used as a data for presenting the direction for collecting the correct information in the SNS use of teenage consumers and establishing marketing strategies for beauty companies.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.611-617
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• 2018

This study divided hairpiece-related technologies into three categories: Materials, Structure, Hair Extensions. Then, it investigated the current patent application trends in the above technologies and attempted to determine what aspects should be focused on in terms of the growth potential of hairpiece-related technologies and future technologies. A hairpiece is used to cover a specific balding area resulting from innate factors such as heredity or acquired traits including disease or accident. It is also used to make short hair look longer. Recently, as the rates of hair loss caused by stress increase, there has been a rising demand for hairpieces that can quickly and conveniently cover a balding region as well as satisfy people's aesthetic needs through diverse hairstyling. Even though patents have been applied evenly across hairpiece technology fields, patent activity has declined since 2010 was confirmed. Therefore, this study targets the facilitation and expansion of the hairpiece technology market by suggesting desirable R&D directions for future hairpiece-related technologies after analyzing current hairpiece patent trends.

• Journal of Digital Convergence
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• v.17 no.1
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• pp.357-364
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• 2019

This study comparatively analyzed hair damage by hair bleach particles and identified three different bleach particle sizes using a scanning electron microscope (SEM). The powdered bleaching agents made of ammonium persulfate (APS) and potassium persulfate had particle sizes of $131{\mu}m$, $72{\mu}m$ and $48.8{\mu}m$. According to a hair damage test, cuticle lift-up or peeling hardly occurred when small bleach particles were used. In terms of hair color, the hair bleached with larger bleach particles was the darkest, while the hair bleached with small bleach particles was the brightest. The results found that for bleaching agents that are more effective in easing hair damage, those with little particles should be used. In addition, it appears that the selection of particles depending on the degree of hair bleaching would enhance bleaching effects and reduce hair damage. The above process is a way to get great results in selecting a bleaching agent. It is anticipated that hair damage could be reduced during hair bleaching based on the above results.

• Journal of Digital Convergence
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• v.15 no.2
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• pp.493-501
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• 2017

This study aimed to present cosmetic countermeasures for preventing fast aging process in the middle age and accepting healthy aging both physically and mentally by investigating the perception of aging according to the health condition, lifestyle and psychological condition targeting mid-aged women in 40s to 50s residing in Seoul and Gyeonggi-do Province. The data collection period was from July 25 to Sept 1, 2015. The data was analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients, and stepwise multiple regression. It was shown that as the age was higher, the menopause ratio was higher, drinking, exercise volume and hours of sleep were reduced and the stress and psychological pressure were higher. According to the menopausal status, the status of facial aging showed a significant difference (${\chi}^2=39.692^{***}$, p<.001), and it also showed a difference according to the status of leisure (hobby) activity (${\chi}^2=22.470^{***}$, p<.01). Also, as higher the age and closer to the menopause in items including the progress of aging, anxiety about aging and improvement efforts, more negative perception was shown, indicating that it is necessary to prepare cosmetic countermeasures for mid-aged women in like a second puberty 40s to 50s although aging and menopause around 50s are very natural. If a beauty alternative is provided, it will help them to have a successful retirement.

• Prospectives of Industrial Chemistry
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• v.20 no.6
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• pp.2-12
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• 2017

최근 피부산업은 미용적인 관점뿐만 아니라 피부질환치료에 대한 관심까지 폭넓게 성장하고 있어 피부의 건강을 개선하고 치료할 수 있는 새로운 신기술 개발이 다각적으로 이루어지고 있다. 특히 기술의 고도화와 체계화를 통한 피부과학기술의 진보가 화학, 화학공학, 재료공학을 기반으로 하는 전통학문분야와 조직공학, 바이오나노공학, 감성공학 등을 기반으로 하는 신학문분야가 융복합되어 이루어지고 있다. 따라서, 본 고에서는 피부산업에서 전략적인 응용이 가능한 피부 나노바이오 콜로이드의 연구개발에 대한 최근 현황을 소개하고자 한다.

• Journal of Digital Convergence
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• v.11 no.2
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• pp.347-354
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• 2013

This study has attempted to figure out differences between emotional labor and psychosocial stress by occupation-related variables against hairdressing industry workers. For this, a total of 191 hairdressers in Busan were examined using emotional labor scale and psychosocial stress scale. The survey was conducted from July 1 to 30, 2011 using t-test, ANOVA and Scheffe's test. Then, the following results were obtained: First, according to analysis on difference in emotional labor by occupation-related variables, difference was found by monthly income in 'control of emotion' category. In terms of 'emotional dissonance,' difference was observed by job title and monthly income. In 'positive expression of emotions,' difference was detected by monthly income and number of off-days per month. Second, according to analysis on difference in psychosocial stress by occupation-related variables, differences were found by age, job title, education, work experience, monthly income, working hours and number of off-days per month. According to the analysis above, monthly income is related with both emotional labor and psychosocial stress among occupation-related variables.