• 패션비즈니스
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• 제25권4호
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• pp.1-13
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• 2021

As interest in skin care increases, this study aims to contribute to the development of the beauty self-care market by providing basic data through the measurement of the oil and moisture skin condition of women in their 20s and 30s. The study was conducted from November 27, 2020 to January 31, 2021, with 20 women in their 20s and 30s divided into 4 groups, A~D, by age, 5 per group. Skin measurements were taken four times at 4 hour intervals at 0H, 4H, 8H, and 12H based on the first measurement that was taken within 30 minutes after waking up, and the oil and moisture indices were observed over time. As a result, both T and U zones showed significant differences in moisture levels over time, with no difference between groups for both T and U zones. Moisture decreased the most between 0H to 4H, and moisture changed the least between 4H to 8H. Changes in moisture increased the similar at 0H and 12H. The oil condition changed more irregularly compared to moisture over time, but all groups showed lower oil content in the U-zone compared to the T-zone. Overall, the facial oil and moisture conditions of women in their 20s and 30s changed over time, indicating that the skin changes in real time. The fact that the skin data, which was measured in the primary activity living environment, can be used as basic research data in the beauty self-care market is meaningful.

• 대한예방한의학회지
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• 제4권2호
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• pp.273-284
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• 2000

The objective of this study consists on clarifying what factors are influenced upon skin care behavior using fender's Health Promotion Model, widely used to anticipate practices of health care behavior for women with keen interest in skin care and then manifesting their correlations from July 1 to August 22, 1998, on 159 women interested in skin care. A subvariable included practice of skin care behavior and independent variables include general characteristics, health fitness, the level of agreement with the advantages of the perceived skin care behavior, the level of cognition of the necessity for skin care behavior The data collected processed with ANOVA and multiple regression analysis to clarify what factors among other independent variables have the most powerful effects upon skin care. The resultant findings were revealed, as follows : 1. In health care behavior among skin care behavior,'full ingestion of water' represented the highest value by 3.45 points, 2. The testees of this study had for the most part a higher level of cognition for the necessity for skin care behavior than for practice of skin care behavior. The more points they have for cognition of the necessity for skin care behavior, the more points they present for practice of skin care behavior. 3. From the perspective of the relationship between sociometic factors on the testees and their skin care behavior, the higher level married women were on (p<0.05) and the more points they have for economic status, the higher points were reflected . 4. The correlations between the testees' recognition or perception factors and points for practice of skin health state showed the higher points than the group who thought that they did not know their own skin health state (p<0.05). The higher the points of skin care fitness (p<0.0001), the higher the points of self-awareness (p<0.0001) 5. The factors that had the most powerful influence upon cognition and practice of women's skin care behavior were found, with statistical significance, to be adjustable factors such as age, smoking, drinking habit, economic status, etc. and points of cognition of the necessity for skin care behavior.

• Smart Structures and Systems
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• 제12권3_4호
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• pp.381-397
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• 2013

In this paper, wireless health monitoring of stay cables using piezoelectric strain sensors and a smart skin technique is presented. For the cables, tension forces are estimated to examine their health status from vibration features with consideration of temperature effects. The following approaches are implemented to achieve the objective. Firstly, the tension force estimation utilizing the piezoelectric sensor-embedded smart skin is presented. A temperature correlation model to recalculate the tension force at a temperature of interest is designed by correlating the change in cable's dynamic features and temperature variation. Secondly, the wireless health monitoring system for stay cables is described. A piezoelectric strain sensor node and a tension force monitoring software which is embedded in the sensor are designed. Finally, the feasibility of the proposed monitoring technique is evaluated on stay cables of the Hwamyung Grand Bridge in Busan, Korea.

• Journal of Photoscience
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• 제9권2호
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• pp.457-459
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• 2002

Sunlight causes various types of adverse skin changes on the sun-exposed areas of the skin, in which the most hazardous one is the induction of malignant skin tumours. FT -IR spectra were obtained from specimens excised from normal skin, BCCs, SCCs, MMs, nevi, lesions of solar keratosis and Bowen's disease. Tissue samples from freshly frozen specimens were cut into 2 sections in strictly sequential order to be stained with H & E for histopathological analysis, and then to be air-dried on CaF$_2$ slide glasses for further spectral data acquisition from defined area of interest. Intra- and inter-sample variations were estimated within grouped lesion categories according to each skin component. Mean spectra for each type of tissue pathology in the 800-1800 $cm^{-1}$ / region was interpreted using the classical group frequency approach that showed the most visible differences in spectra of benign, premalignant and malignant changes directly related to protein conformation and nucleic acid bases. The relative intensity of the nucleic acid peak was increased with progression to malignancy. In addition, PCA was able to evaluate and maximise the differences in the spectra by reducing the number of variables characterizing each patient and pathology category. This type of approach to non-destructively estimate the complexity of IR-spectra of inhomogeneous samples such as skin demonstrates the advantage of FT -IR microspectroscopy to be able to observe diseased states (benign, premalignant, malignant) and distinguish them from normal against a huge background of inter- and intra-subject variability.

• Journal of Ginseng Research
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• 제42권2호
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• pp.218-224
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• 2018

Background: Compound K (CK) is a ginsenoside, a metabolite of Panax ginseng. There is interest both in increasing skin health and antiaging using natural skin care products. In this study, we explored the possibility of using CK as a cosmetic ingredient. Methods: To assess the antiaging effect of CK, RT-PCR was performed, and expression levels of matrix metalloproteinase-1, cyclooxygenase-2, and type I collagen were measured under UVB irradiation conditions. The skin hydrating effect of CK was tested by RT-PCR, and its regulation was explored through immunoblotting. Melanin content, melanin secretion, and tyrosinase activity assays were performed. Results: CK treatment reduced the production of matrix metalloproteinase-1 and cyclooxygenase-2 in UVB irradiated NIH3T3 cells and recovered type I collagen expression level. Expression of skin hydrating factors-filaggrin, transglutaminase, and hyaluronic acid synthases-1 and -2-were augmented by CK and were modulated through the inhibitor of ${\kappa}B{\alpha}$, c-Jun N-terminal kinase, or extracellular signal-regulated kinases pathway. In the melanogenic response, CK did not regulate tyrosinase activity and melanin secretion, but increased melanin content in B16F10 cells was observed. Conclusion: Our data showed that CK has antiaging and hydrating effects. We suggest that CK could be used in cosmetic products to protect the skin from UVB rays and increase skin moisture level.

• 한국응용과학기술학회지
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• 제38권6호
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• pp.1485-1492
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• 2021

본 연구에서는 학습자들의 VR에 대한 의식을 바탕으로 VR을 활용한 피부미용 교과목 개발을 위한 교육환경을 확보하고자, 총 105명의 학습자들의 VR에 대한 인식, VR의 체험요소, VR활용 피부미용교과목 개발 인식, 일반적 특성에 관한 문항을 온라인 설문지를 이용하여 진행하였다. 빈도분석, 요인분석, 상관관계 분석을 통한 조사결과, VR에 대한 인지도가 높을수록 교육적 성과와 몰입도가 높을 것으로(p<.01), 학력이 높을수록 VR 활용 피부미용 체험요소인 일탈성, 인지성, 관심도가 높은 것으로 나타났다(p<.001). 상관관계에서는 VR이용 스킨케어 경험요인이 높을수록 VR 활용 피부미용 교과목 개발 인식이 높은 것으로 나타났다. 따라서 학습자의 기대와 4차 산업혁명 시대에 부합하는 VR을 활용한 피부미용 교과목 개발과 교육이 빠르게 운영될 필요가 있음을 확인하였다. 이에 후속 연구에서는 VR 활용 피부미용교과목 개발과 운영 후의 연구 진행이 필요할 것으로 사료된다.

• 한국멀티미디어학회논문지
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• 제18권7호
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• pp.806-817
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• 2015

The contrast limited adaptive histogram equalization(CLAHE) is an advanced method for the histogram equalization which is a common contrast enhancement technique. The CLAHE divides the image into sections, and applies the contrast limited histogram equalization for each section. X-ray images can be classified into three areas: skin, bone, and air area. In clinical application, the interest area is limited to the skin or bone area depending on the diagnosis region. The CLAHE could deteriorate X-ray image quality because the CLAHE enhances the area which doesn't need to be enhanced. In this paper, we propose a new method which automatically determines the clip limit of CLAHE's parameter to improve X-ray image quality using fuzzy logic. We introduce fuzzy logic which is possible to determine clip limit proportional to the interest of users. Experimental results show that the proposed method improve images according to the user's preference by focusing on the subject.

• 복식문화연구
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• 제16권3호
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• pp.547-558
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• 2008

This study aims on observing the social recognition and its aspects for men taking care of their outer appearances at current point where men are rapidly rising as the main consumer in the beauty industry while their interest for outer appearances are increasing. Therefore, we observed the overall trend and changes in social recognition for male looks by analyzing the contents of newspaper articles from 1990 to 2005 that play the critical role of spreading new information trend while reflecting the interest of people of a certain era. As a result, articles related to male looks were divided into fashion, hair, skin and cosmetics, physical image, cosmetic surgery, trend related to male looks, and male oriented stores and sites, and among them, articles related to fashion and skin took up the highest ratio. Especially articles related to the trend took up the largest ratio as it reflects the properties of two industries launching new products. Moreover, articles related to male looks tended to increase generally according to timely changes, and rapidly increased especially since 2000.

• 한국정보과학회논문지:정보통신
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• 제32권3호
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• pp.318-326
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• 2005

본 논문은 인터넷 둥을 통해 유입되는 유해 이미지를 그 특징을 이용하여 무해, 선정, 유해(누드), 심한 유해(성인물)과 같은 이미지 컨텐츠의 등급으로 선별하기 위한 이미지 특징 추출 방법과 이미지분류 기술을 제시한 것이다. 이를 위해 본 논문에서는 입력 이미지에서 유해 정보임을 인식하기 위한 피부 영역 검출 기법을 제시한다. 또한, 노이즈를 줄이고 효과적으로 유해성 정도를 추출하기 위해 관심 영역을 설정하고 그 관심 영역 안에서만 특징을 정의하는 관심 영역 검출 알고리즘을 제안한다. 그리고 이미지를 4 종류의 등급으로 선별하기 위해 유해 이미지 분류 모델을 생성하는 다중 SVM 학습 기법과 생성된 분류 모델을 이용하여 입력 데이타의 유해 등급을 분류하는 다중 SVM 분류 기법을 제시한다. 특히 피부색 영역 이미지의 형태 정보와 피부색 비율 이미지의 색깔정보를 합하여 만든 피부색 가능성 분포 이미지를 제시하고, 이 피부색 가능성 분포 이미지를 축소하여 학습 과정에서 특징 분류를 위해 이용하는 이미지 특성 벡터를 제안한다. 마지막으로 본 논문에서 제안한 유해 이미지 등급 선별 기법을 적용한 실험 결과와 이미지의 유해 둥급 분류에 대한 판별 성능을 평가한다.

• Biomolecules & Therapeutics
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• 제29권1호
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• pp.98-103
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• 2021

The demand for natural substances with anti-melanogenic activity is increasing due to the recent interest in skin whitening. Intensive investigation on the culture broth of Streptomyces sp. SCO-736, a marine bacterium from the Antarctica coast, has led to the isolation of a new natural product named antaroide (1). The chemical structure was established through the interpretation of MS, UV, and NMR spectroscopic data. Antaroide is a nine-membered macrolide with lactone and lactam moieties. To investigate its applicability in skin whitening cosmetics, its anti-melanogenic activity in B16F10 murine melanoma cells was examined. As a result, antaroide displayed strong inhibitory activities against melanin synthesis and also attenuated the dendrite formation induced by the α-melanocyte stimulating hormone (α-MSH). Antaroide suppressed the mRNA expression of the melanogenic enzymes such as tyrosinase, TRP-1 and TRP-2. This suggests that it may serve as a transcriptional regulator of melanogenesis. Collectively, the discovery of this novel natural nine-membered macrolide and its anti-melanogenic activity could give new insights for the development of skin whitening agents.