셀룰로오스 나노섬유 제조를 위한 면 섬유의 특성 분석

이수현(Soo Hyun Lee),이지영(Ji Young Lee),조해민(Hae Min Jo),김도훈(Do Hoon Kim),김철환(Chul Hwan Kim) 한국펄프·종이공학회 2022 한국펄프·종이공학회 학술발표논문집 Vol.2022 No.10

확률적 할인율을 고려한 신재생 에너지 설비제품의 대체시기 결정

이수현(Lee, Soo Hyun),김재윤(Kim, Jae Yun) 한국상품학회 2013 商品學硏究 Vol.31 No.2

연구목적: 우리나라는 공공기관을 대상으로 신재생 에너지에 투자하도록 하는 법규를 시행함으로써 신재생 에너지 개발 및 보급을 촉진하고 있다. 신재생 에너지 설비제품과 관련한 투자문제는 상대적인 물질손모를 비용으로 환산하고 변동 할인율을 반영할 수 있는 경제성 분석이 요구된다. 본 연구에서는 상대적 효율 및 생산성 감소와 변동 할인율을 반영하여 에너지 설비제품의 경제성을 분석함으로써 신재생 에너지 설비의 대체시기를 효과적으로 결정하고자 한다. 연구설계 및 방법론: 본 연구는 비선형 조업열성을 갖는 MAPI 모형과 몬테카를로 시뮬레이션을 이용하여 현설비제품 효율의 비선형적 감소와 변동 할인율을 반영한 새로운 대체시기 모형을 제시하고, 새로운 모형을 이용하여 신재생 에너지 설비제품의 대체시기를 결정한다. 분석 및 연구 결과: 선형조업열성과 비선형조업열성을 비교하면 비선형 조업열성을 고려한 경우에 신재생 에너지 설비제품의 대체시기가 늦춰지는 것으로 나타났고, 확정적 할인율과 확률적 할인율은 신재생 에너지 설비제품의 대체시기 결정에 단기적 측면에서는 크게 영향을 미치지 못함을 확인하였다. 시사점 및 연구의 한계점: 본 연구는 화석 에너지 설비제품의 비선형적 에너지 추가비용을 조업열성으로 정의함으로써, 상대적 물질손모를 비용으로 환산하고 이를 신재생 에너지 설비제품의 대체시기 결정에 반영하였다는데 의의가 있다. 그러나 조업열성 환산에 고정된 에너지 비용을 이용함으로써 시간에 따른 에너지 가격 상승을 반영하지 못했다. 향후 연구방향: 온실가스 감축부담이 본격화되면 이산화탄소 배출량에 따라 탄소세가 부과될 수 있고, 이는 화석 에너지 설비제품의 조업열성이 될 수 있다. 따라서 향후에 탄소세 부과액을 조업열성으로 환산한 신재생 에너지의 경제적 대체시기 연구가 요구된다. 공헌점: 기후변화 환경에 대응하기 위해 신재생 에너지 설비제품의 도입을 서두르는 것은 기존 에너지 설비제품을 충분히 활용하지 못한 채 새 설비를 도입함으로써 지속가능성 측면에서 비합리적인 의사결정이 된다. 본 연구는 지속가능성을 고려하여 경제적 타당성을 갖는 신재생 에너지 설비제품의 대체시기를 결정하였다는 데에 의의가 있다. Purpose: In recent years, public organizations across the nation have been given the newly implemented policies related UNFCCC (the United Nations Framework Convention on Climate Change). For investment in renewable energy facility appliances, we have to take into consideration the optimal replacement timing made by the economic analysis. In this paper, we propose the decision method of optimal timing to replace of renewable energy facility appliances considering the relative operating inferiority and floating discount rate. Design/methodology/approach: We present the new model using the MAPI model with non-linear operating inferiority and stochastic discount rate with Monte-Carlo Simulation, and decide on the optimal timing to replace renewable energy facility appliances by the new model. Results/findings: If applying the non-linear operating inferiority, renewable energy facility appliances are used for the longer period. However, the deterministic discount rate and stochastic discount rate did not affect the timing to replace renewable energy facility appliances in the short-term. Research implications/limitations: The results show the optimal timing to replace which reflects the relative inferiority of renewable energy facility appliances. A further point needs to be made with regard to the rise in the price of energy. Future work/research: Concern about carbon tax will surface as a serious issue by lowering greenhouse gas. Further research should be directed at determining how we exchange carbon tax with operating inferiority. Originality/value: This article provides the optimal timing to replace renewable energy facility appliances considering sustainability.

모즈 미세도식수술로 치료한 손톱 밑 편평세포암 4예

이수현 ( Soo Hyun Lee ),노미령 ( Mi Ryung Roh ),정기양 ( Kee Yang Chung ) 대한피부과학회 2012 대한피부과학회지 Vol.50 No.5

Squamous cell carcinoma (SCC) of the nail bed is rare, and it usually mimics a variety of diseases. Thus, a true diagnosis of subungual SCC may be delayed for years. The appearance of a subungual tumor at presentation is often non-diagnostic, and exploratory nail-plate removal with biopsy is recommended. We have experienced four patients with subungual SCC, and they were treated by Mohs micrographic surgery (MMS). In an average follow-up of 13.5 months, there was no recurrence in all cases. However, in one case, amputation was performed due to local periosteal invasion. In cases of subungual SCC without bone involvement, particular virtue of MMS over amputation is that it permits the preservation of both function and cosmesis of the nail unit. Since the maintenance of function is of the utmost priority, MMS can be considered the most appropriate technique, as it enables us to maximize the preservation of normal anatomy of the finger. (Korean J Dermatol 2012;50(5):425∼431)

감호위탁제도의 문제점과 실효성 제고방안

이수현 ( Soo Hyun Lee ) 영남대학교 법학연구소 2011 영남법학 Vol.0 No.32

Breakdown of family ties between a child and family due to the increase in boys` and parents` interest and affection for children when compared with the past, it is true that rising. Nevertheless, the competitive position of a parent living in a society of love and care for a child who does not get enough, do not shave. Due to this social phenomenon than ever before, an increase in broken families and abused children, and also falling into the path of crime, the boy is also considerable. Juvenile Law emphasizes the social responsibility for the boy and the boy as the object of protection rather than punishment, to reign with a view to investigate hoping that you can involve. This boy for special treatment why the boy for personal growth process, appearing in several biological psychological immaturity in the answers to obtain the views but also a more long-term out of view, juvenile delinquency for the protection or the state to take appropriate steps If our society come to bear a greater cost because of juvenile delinquency in the early action has only a very meaningful and can be important. That is a crime for the boy`s personal characteristics through the imposition of appropriate correctional detention improvements for the boy`s personal life as well as happy to be embraced by our society, more powerful and cruel, 2nd, 3rd and protect society from criminal acts of It is an important countermeasure is. This boy is charged for detention of the survey phase thorough preparation and adequate human and physical facilities must be prepared as well as the executive in making even the boy`s a real enlightenment and re-painting for the effective practical support and the system should be prepared. So the boy child welfare laws and laws that contradict the purpose of harmonizing the legislation specified by law, the age difference between action and fix the problem, and discrimination in the classification process and personnel support for foster custody of child welfare facilities and each facility is suitable for disposal by a common target Treatment of the basic legal framework, including planning for a portion shall be deemed to be a full review.

『타르 베이비』: 식민화와 정체성의 양상

이수현 ( Lee Soo-hyun ) 대한영어영문학회 2007 영어영문학연구 Vol.33 No.4

The three classes of African people, in Isle des Chevaliers symbolically show the aspects of colonization in modern American society. Sun who unexpectedly intruded and disturbed the colonized territory is the ‘Rabbit’ of the folk story, and Jadine is the ‘Tar Baby’ educated by the whites to seduce and catch it. These two young Africans represent the two opposing aspects of identity in the modern Afro-American society. When they fail to seduce each other into his or her own territory, each of them takes his own way to their symbolic homeland, Jadine to Paris, and Son to his ancestors’ hills. Here, Morrison’s message is that Jadine, her entirely new feministic character, can never be free from the African Other of her cherished identity. Tar Baby warns the modern African people that it can be dangerous and reckless for them to pursue freedom and self-realization, rejecting the traditional culture of their African community. (Korea Advanced Institute of Science and Technology)

각종 위장질환의 위액 내의 Nitrite 농도에 관한 연구

이수현(Soo Hyun Lee),지무영(Moo Young Chi) 대한소화기학회 1986 대한소화기학회지 Vol.18 No.1

Nitrosamines are powerful carcinogens in animal .and they can be formed easily from nitrite by combining these with secondary, tertiary and quaternary amines. This reaction is influenced by nitrite concentration and pH of gastric juice, bacterial colonization and some inorganic ions in gastrointestinal tract. But there are few reports for nitrite concentration in gastric juice still yet. It should be more interesting to detect the nitrosamine concentration in gastric juice to find out the relationship to the stomach cancer, but the procedure itself is very complex. So we chose to examine the nitrite concentration and pH of gastric juice, and by comparing these two, we tried to detect the relationship of these to the various gastric and duodenal disorders. We selected 90 subjects and divided them into 5 groups normal, chronic gastritis, stomach ulcer, duodenal ulcer and stomach cancer according to the gastrofiberscopic findings and pathologic examination of biopsy specimen. The fasting nitrite concentration of gastric juice was measured and was compared to the pH of gastric juice. In this study, the mean gastric juice pH was highest in the cases of stomach cancer (1.85+-1.07 in normal subjects, 2.30+-1.28 in chronicgastritis, 2.78+-1.93 in stomach ulcer, 1.94+-1.25 in duodenal ulcer and 3.89+-1.71 in stomach cancer) and was statistically significant in normal subjects only. The nitrite concentration of gastric juice was highest in cases of stomach cancer(2.29+-0.53ug/ml) and was lower in order of stomach ulcer (l. 62+-1.32), duodenal ulcer (l.48+-1.18), chronic gastritis.(l.22+-1.70) and the normal subjects(0.95+-0.27), and the results in cases of stomach cancer, stomach ulcer and chronic gastritis were stastically significant. The gastric pH was significantly related to the nitrite concentration in the cases of stomach cancer, stomach ulcer and chronic gastritis. Also, the pH of overall subjects was significantly correlated to the nitrite concentration of gastric juice. But we couldn't find any correlation between the nitrite concentration and the age or sex of the subjects.

초등학생의 읽기이해력 향상 중재프로그램에 대한 체계적 문헌고찰

주소현,이수상,Joo, So-Hyun,Lee, Soo-Sang 한국도서관정보학회 2021 한국도서관정보학회지 Vol.52 No.3

이 연구는 체계적 문헌고찰(systematic review) 연구방법을 활용하여 초등학생의 읽기이해력 향상을 위해 제공된 중재프로그램 실험연구들을 분석한 것이다. Cochrane의 핸드북을 적용하였으며, PICOTS-SD에 따라 핵심질문을 구성하였다. KCI에서 검색된 1,610건의 논문에서 포함기준과 배제기준을 적용하여, 최종 18건을 분석대상으로 선별하였다. Cochrane에서 제공하는 'RevMan5' 도구를 사용하여 비뚤림 위험을 평가하였다. 평가결과 대부분의 영역에서 비뚤림 위험도가 낮게 나타났다. 그리고 이들 논문들에 대한 정성적인 분석을 위해 자료요약표를 정리하였다. 이 결과, 중재프로그램의 유형은 다양하였으며, 고학년생을 적용대상으로 하는 경우가 많았다. 실험집단의 크기는 6명에서 29명이며, RCT 기반 연구보다 QED 기반 연구가 더 많았다. 중재시간은 40분이 가장 많았으며, 중재회기는 8회에서 24회로 나타났다. 그리고 모든 연구에서 중재프로그램은 읽기이해력 향상에 효과가 있는 것으로 나타났다. This study analyzed experimental studies of intervention programs provided to improve reading comprehension of elementary school students using a systematic review research method. Cochrane's handbook was applied, and key questions were formulated according to the PICOTS-SD. The inclusion and exclusion criteria were applied to 1,610 papers searched in KCI, and the final 18 cases were selected for analysis. The risk of bias was evaluated using the 'RevMan5' tool provided by Cochrane. As a result of the evaluation, the risk of bias was low in most areas. And for the qualitative analysis of these papers, a data summary table was prepared. As a result, the types of intervention programs were diverse, and in many cases, upper grade students were applied. The size of the experimental group ranged from 6 to 29, and there were more QED-based studies than RCT-based studies. The most mediation time was 40 minutes, and the number of mediation sessions was 8 to 24. And in all studies, the intervention programs were found to be effective in improving reading comprehension.

연구논문 : 의료오류 공개에 대한 대학생들의 태도 조사

이수현 ( Su Hyun Lee ),김한아 ( Han A Kim ),한흥식 ( Heung Sik Han ),김성수 ( Sung Soo Kim ) 한국의료윤리학회 2011 한국의료윤리학회지 Vol.14 No.3

Object: The purpose of this study was to identify the attitudes of patients regarding medical error. Methods: The questionnaires were administrated to 145 college students in Busan, one hundred twenty three usable 123 questionnaires were analyzed. The questionnaires consist of 4 major concepts; 1) knowledge, 2) attitudes toward disclosure of medical error, 3) expectations for doctors` behaviors, 4) barriers to the disclosure of the medical error. Results: Approximately 92% of respondents supported the immediate disclosure of medical errors, and 62.6% supported full disclosure including near misses. Approximately 57% believed that it would be most effective if doctors themselves communicated errors to patients, while almost 93% said that it was a doctor`s obligation to do so. Regarding reasons for disclosure, 44.7% said that it would reduce doctors` feelings of guilt, while 45.5% said that it would also increase patient trust for doctors. Respondents also thought that the barriers to the full disclosure of medical errors were (1) damaged reputations (30.9%), (2) worries about medical lawsuits (22.8%), and (3) professional discipline (22.0%). Conclusion: Most of the participants in this survey support the immediate disclosure of medical errors regardless of the seriousness of the error. Furthermore the participants regarded disclosure of medical error as doctors` obligation. In order to meet the patients` high expectation regarding the medical error, this might be a good time for us to find a way to close the gap between patients` expectation and doctors` current practice.

셀룰로오스 나노섬유로 제조된 수처리용 멤브레인 필터의 성능 평가

이수현(Soo Hyun Lee),이지영(Ji Young Lee),조해민(Hae Min Jo),김도훈(Do Hoon Kim),김철환(Chul Hwan Kim) 한국펄프·종이공학회 2022 한국펄프·종이공학회 학술발표논문집 Vol.2022 No.4

주택 출입공간에 대한 1인 가구 여성의 범죄두려움 인식 연구 - 저층 주거지역의 다세대 · 다가구 주택을 중심으로 -

이수현(Lee, Soo-hyun),하미경(Ha, Mi-kyoung),변기동(Byun, Gi-dong) 대한건축학회 2022 대한건축학회논문집 Vol.38 No.10

This study focused on female, single-person households. They are classified as the group living with the highest Fear of Crime(FoC) in daily life and experiences a negative effect on their overall physical, economic, and psychological well-being. The purpose of this study is to identify environmental factors that cause FoC in a residential atmosphere and to suggest improvement measures to create a safe residential environment. Therefore, this study was limited the scope to the entrance of multi-family housing in low-rise residential area that represents a major residential type of single female households. The relationship between each physical environmental factor and situational FoC through a survey and eye-tracking method based on case photos of entrances were analyzed. The results revealed that during the day, Piloti and building sign, and in night situations, entrance door, window, CCTV and building sign, road, mailbox, and Piloti had a significant impact on the FoC. To address safety concerns, improvements on the aforementioned factors should be considered first. Piloti should be clearly territorial and give the impression that strangers are restricted from entering. Appropriate alternatives should be prepared by investigating the location and area of windows. It is necessary to clearly visualize the boundary between the entrance and the road, and to install building and CCTV signs around the entrance door so that space users and strangers can recognize the area. In addition, it is necessary to strengthen the image of the private space around the mailbox, and change the mailbox design so that the contents of the mailbox can only be checked from the inside. The entrance used in this study was limited and is difficult to represent all buildings in a low-rise residential area. Nevertheless, This study is differentiated in that it identified a users intuitive perception by using eye-tracking along with a survey. The results of this study can be used as useful data for improving the safety of residential environment, and improve single female household’s psychological well-being and quality of life.