Synthesis and Characterization of Polyaniline Nanorod Doped with p-Toluenesulfonic Acid

최지형,오경화,김성훈 한국고분자학회 2006 한국고분자학회 학술대회 연구논문 초록집 Vol.2006 No.4

우리 집은 꽃 가족 외 1편

최지형 고요아침 2018 한국동시조 Vol.- No.8

최근 10년간(2010~2019) 의료기관 종사자의 업무상질병 및 역학조사 사례 특성 분석

최지형,이지혜,이복임 한국직업건강간호학회 2023 한국직업건강간호학회지 Vol.32 No.4

Purpose: We reviewed the cases of occupational diseases that occurred in healthcare workers from 2010 to 2019 and the cases of epidemiological investigations conducted by the Occupational Safety and Health Research Institute for them. Methods: In this study, gender, age, working period, occupational characteristics, and disease characteristics by occupation, which are general characteristics of healthcare workers approved for occupational diseases. In addition, 32 cases of epidemiological investigation of healthcare workers conducted by the Institute for Occupational Safety and Health for the past 10 years (2010~2019) were analyzed. Results: The gender, age, working period, occupational characteristics, and disease characteristics by occupation of medical workers recognized as occupational diseases were all statistically significant (p<.001). In the epidemiological investigation, ionizing radiation( 50.0%) and stress (33.3%) were recognized as disease-related factors, and even in cases of disapproval, ionizing radiation (60.0%) and shift work (25.5%) were designated as related factors. And it was statistically significant (p=.008). Conclusion: The current study identified the types of diseases, various causes, and general characteristics and occupational characteristics that occur frequently in healthcare workers. Therefore, if this study is used as basic information to set the priority and direction of disease prevention project for healthcare workers, it is judged that it will be helpful in preventing industrial accidents.

4차 산업혁명시대의 K-뷰티산업 발전방안에 관한 연구

최지형,권기한,정재형 인문사회 21 2023 인문사회 21 Vol.14 No.3

This study examines the value and prospects of the beauty industry in the era of the 4th industrial revolution, the current status of the K-beauty industry, and proposes ways to develop the K-beauty industry in the era of the 4th industrial revolution. The research method is a literature review method. As for the contents of research, previous studies on the 4th industrial revolution and beauty industry were reviewed, the K-beauty industry in the era of the 4th industrial revolution was analyzed, and the development plan of the K-beauty industry was presented. As a result of the study, first, it was found that the conversion of customized beauty frames is necessary due to technological innovations such as VR and AR. Second, it was found that there is a need for sustainable growth analysis by identifying consumer needs through the use of big data. Third, a localization strategy is needed to identify the needs of various countries and regions, and fourth, it was found that convergence of the beauty health industry is necessary to simultaneously meet the needs for health and beauty that can encompass all generations. Through this study, it was suggested that the efforts of the state, local governments, and industries should be made together so that the Korean beauty industry can develop and succeed continuously.

감정노동자의 감정부조화와 직무스트레스관계에서 자아탄력성의 매개효과

최지형,박은민 한국복지상담교육학회 2018 복지상담교육연구 Vol.7 No.1

본 연구는 감정노동자가 경험한 감정부조화가 직무스트레스에 미치는 영향에서 자아탄력성의 매개효과를 검증하는데 목적이 있다. 연구대상자는 J와 K 지역에 근무하는 금융 종사자 240명을 대상으로 설문조사를 하였고 수집된 자료는 SPSS 21.0 프로그램을 활용하여 분석하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 감정노동자의 감정부조화와 직무스트레스, 감정부조화와 자아탄력성, 자아탄력성과 직무스트레스 간에는 모두 유의미한 상관관계가 있는 것으로 나타났다. 둘째, 감정노동자의 감정부조화와 직무스트레스 관계를 자아탄력성이 부분매개 하였다. 본 연구는 감정노동자의 감정부조화, 직무스트레스, 자아탄력성에 대한 상관관계를 확인하고, 개인의 내적요인인 자아탄력성이 부분매개 한다는 것을 밝혔다. 즉 자아탄력성은 감정노동자의 직무스트레스를 이해함에 있어 스트레스를 유발하는 심리·정서적으로 중요한 요인임을 알 수 있다. 이러한 결과는 직무스트레스변인과 관련된 후속연구와 감정노동자의 자아탄력성 증진을 위한 기초자료로 활용되고 자아탄력성 증진 프로그램 개발 및 상담에 도움이 될 수 있을 것이다. In the present study, there is a purpose to verify mediating effect of ego resilience in the impact of the emotion dissonance that emotional laborers have experienced on job stress. A survey was conducted including 240 financial workers engaged in general work in the area J and K, the collected data was analyzed utilizing SPSS 21.0 program. Results of this research are summed up as follows. Firstly, it was found that there was all significant correlation between emotional dissonance and job stress, emotional dissonance and ego resilience, ego resilience and job stress. Second, the relationship between emotional dissonance of emotional laborer and job stress is partially mediated by resilience. This study confirmed correlation of emotional dissonance, job stress, and ego resilience of emotional laborer, and showed that the ego resilience, one's internal factor. In other words, ego resilience is emotionally important factor which cause stress in understanding job stress of emotional laborers. These results can be utilized as base data for a follow-up study about job stress factors and enhancement of ego resilience, and be helpful for development and counseling of ego resilience enhancement program.

중첩된 NEMO 환경에서 효율적인 바인딩 갱신 메시지

최지형(Ji-hyoung Choi),이동철(Dong-chul Lee),김동일(Dong-il Kim) 한국통신학회 2008 한국통신학회 학술대회논문집 Vol.2008 No.7

동종 조혈모세포이식을 받은 환자군에서의 Fish Oil을 함유하는 정맥지방유제 공급의 효과

최지형 ( Ji Hyeong Choe ),이영주 ( Young Joo Lee ),배혜정 ( Hye Jung Bae ),정선회 ( Sun Hoi Jung ),한현주 ( Hyeon Joo Hahn ),고영일 ( Yungil Koh ) 한국정맥경장영양학회 2016 한국정맥경장영양학회지 Vol.8 No.1

Purpose: Omega-3 fatty acid is known for immunonutrition in that it has anti-inflammatory properties and improves the patients’immune function. The objective of this study was to determine the effects of a fish oil-based lipid emulsion for adult patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT).Methods: This was a retrospective study of 90 adult allogeneic HSCT patients from July 2011 to June 2015. The patients were divided into two groups according to the lipid type provided; fish oil group (FO group, n=55) and non-fish oil group (NFO group, n=35). The demographics, parenteral nutrition and lipid emulsion duration, length of hospital stay (LOS), weight change, 30 day mortality, survival period, incidence of acute graft-versus-host disease (aGVHD), neutropenic fever, sepsis, and re-hospitalization were collected from the electronic medical records.Results: The patients’ characteristics including age, sex, body mass index, and underlying disease were similar in the two groups. The incidence of aGVHD and infectious complications, mortality, LOS, re-hospitalization were also similar. The FO group showed weight gains, whereas the NFO group showed weight loss (FO vs. NFO=0.34% vs.-1.08%, P=0.245).Conclusion: The clinical outcomes were similar in the two groups but there was a tendency for gain weight in the FO group. A large, well designed study, and a dosing study will also be needed to determine the optimal dose range for HSCT patients.

당뇨망막병증에서 범망막광응고술과 추가적 베바시주맙 주입술이 망막혈관 직경에 미치는 영향

최지형(Ji Hyoung Chey),박정민(Jung Min Park) 대한안과학회 2016 대한안과학회지 Vol.57 No.6

목적: 당뇨망막병증에서 범망막광응고술과 추가적인 유리체내 베바시주맙 주입술이 중심망막혈관 직경에 미치는 영향을 알아보고, 당뇨망막병증에서 망막혈관 직경의 특징을 알아보았다. 대상과 방법: 치료 받지 않은 당뇨망막병증으로 내원한 64안에 대하여 범망막광응고술 시행 전과 완료 6개월 후 중심망막혈관 변화를 후향적으로 분석하고 추가적으로 유리체내 베바시주맙 주입술을 시행한 군에서 중심망막혈관 직경에 미치는 영향도 분석하였다. 중심망막혈관 직경 및 동정맥 비는 안저사진으로부터 Interactive Vessel Analysis (IVAN) 프로그램과 Big 6 공식을 이용하여 구하였다. 결과: 6개월 뒤 두 군 모두에서 통계학적으로 유의한 중심망막동맥과 중심망막정맥 직경의 감소가 있었으나(p<0.001, p=0.008) 동정맥 비의 변화는 유의하지 않았다(p=0.338). 추가적인 유리체내 베바시주맙 주입술은 범망막광응고술만 시행한 군과 비교하여 중심망 막혈관 직경에 유의한 변화를 가져오지 않았다. 진행한 당뇨망막병증의 망막혈관 직경은 기존에 알려진 당뇨가 없거나 있는 한국인의 망막혈관 직경과 비교 시 더 작은 중심망막동맥 직경, 더 큰 중심망막정맥 직경, 감소한 동정맥 비를 보였으며 연령에 따른 유의한 변화는 없었다. 결론: 당뇨망막병증 환자에서 범망막광응고술 완료 6개월 후 유의한 중심망막혈관 직경의 감소가 있었으며 추가적인 유리체내 베바시 주맙 주입술은 추가적인 중심망막혈관 직경의 유의한 변화를 가져오지 못하였다. 본 연구의 결과를 통하여 당뇨망막병증 환자에서 평균적인 망막혈관 직경의 기준을 세울 수 있으며 망막병증이 있을 시 혈관 직경에 미치는 영향을 알아볼 수 있었다. <대한안과학회지 2016;57(6):917-923> Purpose: To evaluate the effect of panretinal photocoagulation and additive intravitreal bevacizumab injections on central retinal vessel diameters and characteristic retinal vascular caliber changes in diabetic retinopathy. Methods: Changes in central retinal vessel diameters were retrospectively analyzed before and 6 months after panretinal photocoagulation with or without additive intravitreal bevacizumab injections in 64 eyes first diagnosed with diabetic retinopathy. Vessel diameters and arteriovenous ratio (AVR) were measured using Interactive Vessel Analysis (IVAN) software and the Big six formula. Results: There were significant decreases in central retinal artery equivalent (CRAE) and central retinal vein equivalent (CRVE) in both groups, with and without additive intravitreal bevacizumab injections, 6 months after completion of panretinal photocoagulation (p < 0.001, p = 0.008), but no significant change in AVR (p = 0.338). Additive intravitreal bevacizumab injections did not produce significant changes in central retinal vessel diameters after 6 months compared to vessel diameters treated with panretinal photocoagulation only. Retinal vascular caliber of progressed diabetic retinopathy showed smaller CRAE, larger CRVE, and smaller AVR compared to those of normal or diabetic Korean subjects in a previous study and showed no significant association with age. Conclusions: CRAE and CRVE decreased significantly 6 months after panretinal photocoagulation in diabetic retinopathy, but additive intravitreal bevacizumab injections did not cause significant additive changes to central retinal vascular calibers in this study. We established the standard retinal vascular caliber of Korean subjects in diabetic retinopathy and analyzed the effects of retinopathy on retinal vessel caliber. J Korean Ophthalmol Soc 2016;57(6):917-923

이중망간 끊김없는 핸드오버 제공을 위한 MIH 기반의 이동 네트워크에 관한 연구

최지형;김동일 東義大學校産業技術開發硏究所 2010 産業技術硏究誌 Vol.24 No.-

NEMO는 노드가 아닌 네트워크의 이동성을 지원하는 기술로써, 이동 네트워크 내의 모든 노드들에게 세션 연결성을 보장한다. 하지만 지원 프로토콜은 높은 핸드오버 지연을 초래하므로, VoIP와 같은 실시간 서비스에는 부적합하다. 이러한 핸드오버 지연을 줄이기 위한 방안 중의 하나인 FNEMO는 기존의 NEMO와 FMIPv6를 결합하여 핸드오버 시 발생하는 지연을 감소시켜 빠른 핸드오버를 지원한다. 하지만 FNEMO는 IEEE 802.16e 환경만을 고려 하였기 때문에 모든 네트워크에 사용될 수 없다. 본 논문은 이종망간 핸드오버를 지원하는 프로토콜인 MIH와 FNEMO의 특성을 결합하여 MIH 기반의 FNEMO를 제안한다. 제안하는 MIH-FNEMO의 이종망간 핸드오버를 비교/분석하고, 핸드오버 지연을 줄이기 위한 방안을 시뮬레이션을 통해 검증한다.

MIH 기반의 이동 네트워크를 위한 빠른 핸드오버 제공 방안 연구

최지형(Choi Ji Hyoung),김동일(Kim Dong Il) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.11