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Jemin Kim,Sang Gyu Lee,Joohee Lee,Sooyeon Choi,Jangmi Suk,Ju Hee Lee,Joo Hwan Yang,Joon Sung Yang,Ji Hee Kim 한국식품영양과학회 2022 Journal of medicinal food Vol.25 No.12
Orally administered collagen peptides could contribute to antiaging by replacing the degraded extracellular matrix proteins caused by photoaging. This study aimed to evaluate the efficacy and safety of low-molecular-weight collagen peptides for treating photoaged and dry skin. In this randomized, placebo-controlled, parallel-group, double-blinded trial, we randomly assigned study participants (n = 100) to either the test product group or placebo group at a 1:1 ratio for 12 weeks. The wrinkle scale score, eye wrinkle volume, roughness parameters, such as the average maximum height of the wrinkle (Rz), arithmetic average within the total measuring length of the wrinkle (Ra), maximum profile valley depth of the wrinkle (Rv), and skin hydration, transepidermal water loss (TEWL), overall elasticity (R2), and ratio of elastic recovery to total deformation (R7) were evaluated at baseline, 6 weeks, and 12 weeks. Safety assessments with serial blood tests were also conducted. Efficacy assessments of data from 84 participants were conducted as the per-protocol analysis. After 12 weeks, the 10-grade crow's feet photo scale score, eye wrinkle volume, skin roughness parameters (Rz, Ra, and Rv), skin elasticity (R2 and R7), skin hydration, and TEWL were significantly improved in the test product group compared to the placebo group. There were no adverse events or abnormalities according to laboratory analysis associated with using the test material during the study period. This study showed that the oral supplementation of low-molecular-weight collagen peptides could improve the wrinkles, elasticity, hydration, and barrier integrity of photoaged facial skin. This clinical study was registered with the Korean Clinical Research Information Service and International Clinical Trials Registry Platform (No: KCT0006500).
양제민(Jemin Yang),박재천(Jaechon Park) 한국정보기술학회 2007 한국정보기술학회논문지 Vol.5 No.2
Traditionally spectrum management policy was illustrated by command and control. Recently many policies which aim at efficiency of spectrum usage are newly proposed. This study focuses on market based policy which is one of the new policies, and compares Korean spectrum management policy trends with the United States. As a result, it shows there are important implications which Korea's policy maker should work on. Because political environment is a important factor for promoting info-telecommunication industry, this study's implications must be useful.
양제민(Jemin Yang),박재천(Jaechon Park) 전북대학교 법학전문대학원 2012 JEONBUK LAW JOURNAL Vol.2 No.1
본 연구는 무선 망 개방 제도에 초점을 맞추어 국내 무선 인터넷 활성화 계획을 분석하였다. 그 결과, 정량적으로는 사이드 로딩 허용, 무선 SNS 접속 개선, 이용자 선택권 보장 등 정부가 도입한 망개방 관련 제도가 실제 정부가 기대하고 있는 제도적 효과인 개방적 환경 구축, 무선 인터넷 이용 확대에 긍정적인 영향을 줄 수 있을 것으로 평가되었다. 정성적으로는 각 제도가 사안별로 수립되고 있는 바, 근본적인 대책이 될 수 없을 뿐 아니라 제도의 불확실성, 비신속성, 비일관성의 문제가 발생할 수 있는 것으로 나타났다. 따라서 무선 인터넷 활성화 계획에서의 무선 망 개방 제도가 보다 실효성 있는 제도가 되기 위해서는 사안별 규제에서 벗어나 무선 망 개방에 대한 정의와 목표의 정립을 시작으로 그 원칙을 수립하는 한편, 이를 실현할 수 있는 제도를 확립하여 무선 산업에 일괄적으로 적용하는 것이 필요하다 판단된다. This study focused on wireless open access in Korea's Mobile Internet Promotion Plan. As a result of Quantitative Analysis, this study found that open access policies including the permission of side loading, the improvement of mobile SNS access and the guarantee of right of choice, which are planned by government, can be useful for making the opened industrial environment and promoting the mobile internet usage. In the context of qualitative analysis, this study found that the problems of uncertainty, inconsistency and delay in the regulation can emerge. So this study suggested that government make the general principle of wireless open access and apply to mobile industry.