http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
자외선 조사에 의해 표면개질된 셀룰로스 아세테이트 직물의 염색성
이해성,손원석,유재형,류원석,장진호,Lee, Hae-Sung,Son, Won-Suk,Yu, Jae-Hyun,Lyoo, Won-Seok,Jang, Jin-Ho 한국섬유공학회 2006 한국섬유공학회지 Vol.43 No.4
Hydrophobic surfaces of cellulose acetate(CA) fabrics were modified to give more hydrophilicity via $UV/O_3$ irradiation. The surface change of chemical structure and composition were investigated by ATR and ESCA analysis. The UV irradiation treatment caused ester linkage of the acetyl groups to break down and new photo-oxidated products were generated as indicated in subtracted ATR spectra and $O_{1s}/C_{1s}$. Also degree of acetylation of the irradiated CA fabrics decreased with increasing UV energy. It was found that the dyeability of the modified acetate remarkably improved particularly toward cationic and reactive dyes, while disperse dyeability of the modified fabrics decreased noticeably at the irradiated surface. Effect of change in various dyeing conditions including dye concentration, dyeing time and temperature on cationic dyeing were assessed to find optimal dyeing condition. The colorfastness of the acetate fabrics to laundering and rubbing was good enough in spite of surface coloration of the acetate fabrics inevitable in the UV treatment and subsequent dyeing.
배전 자산 상태예측 모델 성능 개선을 위한 기계학습 데이터 관리 시스템 개발
이해성(Hae-Sung Lee),이병성(Byung-Sung Lee) 대한전기학회 2021 전기학회논문지 Vol.70 No.9
The predictive information provided through the electric distribution asset failure prediction model is used as key information for transmission and distribution investment plans in consideration of new and renewable energy, distribution line capacity analysis, or distributed power location analysis. The predictive performance of the distribution asset failure prediction model is affected by the quality of the training data. Also, due to the characteristics of the highly volatile electrical distribution line, the electric distribution asset failure prediction model should maintain the predictive performance at a certain level by performing periodical machine learning on newly generated data. In this paper, we develop an automated system for machine learning data quality management in order to continuously manage machine learning data and efficiently improve electric distribution asset condition prediction model. As a result, our system make it possible to effectively shorten the development time and the cost of the electric distribution asset failure prediction model through the provision of high-quality data for training the prediction model. And the system developed in this paper will be able to improve the accuracy of electric distribution asset condition prediction model.
이해성 ( Hae Sung Lee ),김종희 ( Jong-hee Kim ) 한국운동생리학회 2021 운동과학 Vol.30 No.4
PURPOSE: Frailty is a geriatric syndrome that impairs the health and quality of life of older adults. While unintended weight loss is known to be a primary risk factor for frailty, obesity has also been closely associated with frailty. Combined exercise is thought to be an effective way of resolving obesity and frailty, but studies demonstrating the effect of combined exercise on obese frailty are lacking. In this review, we seek to understand the relevant mechanisms by exploring prior studies on obese frailty, and provide the implications of appropriate combined exercise interventions for obese frailty. METHODS: To collect data for this study, we used academic search systems such as Scopus, Google Scholar, PubMed, and Web of Science. The keywords used for the search were a combination of words such as ’obesity’, ‘frailty’, ‘combined or multicomponent exercise’, and ‘older or elderly adults’. RESULTS: The results from the 16 selected articles confirmed that combined exercise reduces body weight, percentage of body fat, and risk of falls. Moreover, it improves muscle strength, balance, and walking function of the obese frail population. CONCLUSIONS: As we have confirmed the positive outcomes on the combined exercise for obese frail older adults, an optimal exercise program needs to be presented. Older adults with obesity are recommended to exercise at least 2-3 times a week during the initial period. Further, they should begin with low-intensity walking, full-body exercise, balance, and flexibility exercises, then gradually increase the exercise volume. Moreover, to facilitate the positive outcomes of physical training and to encourage autonomy and enjoyment of exercise among obese frail older adults, a novel method and an individualized scientific exercise program need to be developed.
술폰산기 자가 조립 단분자막 형성을 이용한 백금 기재 표면의 초친수성 코팅
이해성 ( Hae Sung Lee ),이해신 ( Hae Shin Lee ) 한국접착및계면학회 2015 접착 및 계면 Vol.16 No.4
백금은 주조가 쉽고 잘 부식되지 않으며 다양한 화학 반응의 촉매로 사용되는 물질이다. 이러한 다양한 장점 때문에, 배기가스 필터, 부식 방지 전극, 수술 및 생체 이식 재료 등 다양한 분야에서 백금의 활용도가 높다. 그러나, 여느 금속과 마찬가지로 백금 표면은 물에 대한 젖음성이 그다지 크지 않아, 수계 환경에서 표면의 활용성이 좋지 않다. 이에, 본 연구에서는 백금을 매우 간단하면서도 효과적으로 젖음성을 향상시켜 초친수성(superhydrophilic)으로 만들어주는 코팅 방법을 보고 하고자 한다. Sodium 3-mercapto-1-propanesulfonic acid 용액을 이용하여 백금 표면을 코팅한 결과, 백금 표면의 물에 대한 접촉 각이 10° 이하로 감소하는 것을 확인하였다. 단순 담금 코팅을 통해 만든 sodium 3-mercapto-1-propanesulfonic acid 자가조립 단분자막을 이용해 성공적으로 백금 표면을 초친수성 표면으로 코팅하는데 성공하였다. Platinum (Pt) is an easily moldable, anti-corrosive and also good catalyst in a variety of chemical reactions. Platinum can be used in many fields, however, however, the low wettability of platinum substrate in many platinum-based devices has been made a problem when they contact with liquid state environment. In this study, we report a simple and effective self-assembled monolayer coating method which provides tremendously increased wettability on platinum substrate device by using Sodium 3-mercapto-1-propanesulfonic acid solution. After surface modifications, water contact angle of the surfaces displayed less than 10°, representing that surfaces are successfully coated to be super-hydrophilic surface by simple dip coating method.
이해성(Hae-Sung Lee),권준희(Joon-Hee Kwon) 한국정보기술학회 2012 Proceedings of KIIT Conference Vol.2012 No.5
온라인 소셜 네트워크 서비스를 통해 생성된 소셜 데이터의 폭발적인 증가로 인해 일반적인 웹 문서만을 다루는 기존 정보 검색과 다른 형태의 소셜 네트워크 기반 정보 검색에 대한 중요성이 커지고 있다. 본 논문에서는 소셜 데이터의 저장 및 검색 등에 효과적이라 알려진 그래프 데이터베이스에 대해 기술하고 관련연구를 통해 그래프 데이터베이스 기반 검색에 대한 최근 연구 동향을 살펴본다. 또한 페이지랭크를 적용한 그래프 데이터베이스 기반의 새로운 소셜 검색 기법을 제안한다. An explosive increase of data generated from SNS causes the significance of social network-based search which are widely different with existing information retrieval systems such as the Web search. In this paper, we describe the research trend of graph database and resent studies about the graph database-based information retrieval. Also, we propose a PageRank-based social search technique for more efficient social network-based information retrieval.
소아 아토피 피부염의 빈도와 원인의 변화 - 10년간 전과 비교하여 -
이해성 ( Hae Sung Lee ),김종서 ( Jong Suh Kim ),편복양 ( Bok Yang Pyun ) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 2002 소아알레르기 및 호흡기학회지 Vol.12 No.4
목적: 최근 알레르기질환의 급증과 함께 아토피피부염 환자도 증가하고 있다. 대한소아알레르기 및 호흡기학회에서 2000년도에 전국의 초등, 중학생 43,045명을 대상으로 설문조사한 결과에 의하면 초등학생의 24,9%, 중학생의 12.8%가 아토피피부염을 진단받은 것으로 조사되었다. 저자들은 아토피피부염의 빈도와 호발 연령 대, 원인 항원에 있어 10년 전 조사 결과와 비교하여 변화를 알아보고자 본 연구를 시행하였다. 방법: 2001년 8월부터 2002년 Purpose: The prevalence of atopic dermatitis has been increased in the last decade. The purpose of this study is to compare the prevalence, and the etiologic allergens of atopic dermatitis in children between the year of 1992 and 2002. Methods: The study