리더십 평가에서 사회적 정보의 효과 : 서면 진술과 구두 진술 정보의 비교

박영석,윤지연 가톨릭대학교 사회과학연구소 2006 社會科學硏究 Vol.22 No.-

본 연구는 리더를 평가할 때 그 리더에 대한 행동, 태도, 역량 및 특성 등에 관한 주변 사람들의 의견, 즉 사회적 정보가 그 리더의 평가에 어떠한 영향을 주는지를 알아보고자 하였다. 이를 위해 두 개의 연구가 수행되었다. 연구1에는 대학생 106명이, 연구 2에는 대학생 136명이 피험자로 참여하였다. 실험 참여자들은 두 명의 리더들이 주인공으로 활동하는 약 25분 분량의 영상자료를 시청한 후, 필름 속 리더들을 LBDQ(리더행동기술질문지)를 사용하여 구조주도 행동과 배려 행동 차원에서 평가하도록 하였다. 필름 속 리더들은 각각 성과형 리더와 배려형 리더로 판단되는 활동을 하였다. 필름의 시청이 끝나면 실험 참여자들에게 사회적 정보를 화면을 통해 제시하였다. 연구 1에서는 자막을 통해 서면으로 사회적 정보를 제공하였고, 연구 2에서는 같은 대학생들의 인터뷰 장면을 동영상으로 보여 주며 구두로 사회적 정보를 제공하였다. 실험참여자를 두 집단으로 나누어 한 집단에게는 두 주인공이 서로 배려 행동을 많이 발휘하였다는 사회적 정보를 제공하였고, 다른 집단에게는 두 주인공이 서로 과제 지향적인 행동을 많이 발휘하였다는 정보를 제공하였다. 연구 1, 2를 통해 밝혀진 결과는 다음과 같다. 1) 평가자들은 객관적으로 관찰한 내용 즉, 필름 속의 리더가 발휘한 행동에 근거하여 리더를 평가하였다. 2) 평가자들은 사회적 정보의 영향을 받아 리더를 평가하였다. 3) 평가자들은 리더에 대한 평가차원 중 보다 애매하고 덜 구체적인 배려행동 차원에서 사회적 정보에 더욱 의존하였다. 논의에서는 본 연구의 시사점과 향후 연구 주제를 다루었다. This study examines the effects of social informations, in which other people's opinions about the leaders were conveyed, on the evaluation of leader behaviors. 106 subjects were participated in experiment 1 and 136 subjects in experiment 2. Subjects were observed two leaders in video tapes, 25 minute long and two leaders playing different leadership(Performance vs. Relation oriented), and then gave social informations about them before they evaluate leaders on LBDQ. Social informations from five peoples were conveyed by 'written statements' in experiment 1, and by 'oral statements' in experiment 2. In experiment 2, each five individual appeared in film and talked her/his opinions about two leaders. Subjects were divided to two groups and received different social informations. One group received 'two leaders are good performance leader' (social informations of Performance), and the other group received 'two leaders are good relation leader' (social information of Relation). Results indicate that 1) subjects evaluate leaders based on objective information, the observed behaviors in film, 2) subjects evaluate leaders on social informations too, 3) the effects of social information were stronger in Consideration dimension than Initiating-Structure dimension of LBDQ. The limitation and suggestion for further research were discussed.

서울 지역 여자대학교 집단에서 월경전기 증후군 및 월경전 불쾌기분장애의 유병율

정범석,이철,이지현,서민경,한오수,김창윤 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.4

연구목적 : 가임기 여성의 75%가 하나 이상의 월경전기 증상을 경험하며, 일상생활에 지장을 주는 경우도 3∼8%에 이르지만 한국 여성을 대상으로 한 월경전기 증후군(Premenstrual syndrome : PMS)및 월경전 불쾌기분장애((Premenstrual dysphoric disorder : PMDD)에 대한 역학 조사는 부족한 실정이다. 따라서 본 자들은 한국에서의 유병율, 증상의 양태 및 삶에 미치는 정도 등의 역학 조사를 통해 월경전 불쾌기분장애에 대한 올바른 정보를 제공하고 관련 임상 연구의 기초자료로 활용하고자 본 연구르 시행하였다. 방 법 : 6개의 서울 소재 4년제 여자대학교에서 무작위 군집표본 추출로 선택된 4개 학교의1∼3학년 학생 중 무작위 군집표본추출을 통해 선택된 1419명을 대상으로 하였다. DSM-IV진단기준을 근거로 저자들이 제작한 6점 척도의 설문지가 사용되었으며, 난포기에 비해 황체기에 75%이상 악화된 경우 증상이 있다고 판정할 경우의 월경전 불쾌기분장애의 유병율을 조사하였다. 월경전 불쾌기분장애 집단과 증상은 있으나 진단기준에 부합되지 않는 월경전기 증후군 집단으로 나누어 증상 양태, 식습관 변화, 생활에 미치는 영향 정도 등을 비교하였다. 결 과 : 부적절한 자료 198명(13.9%), 주요 신체 혹은 정신질환을 앓은 경우 등 선정 배제 기준에 속하는 경우 348명(24.5%)을 제외한 873명이 최종 분석되었다. 873명 중 월경전 불쾌기분장애의 유병율은 5.0%이었으며, 월경전기 증후군의 유병율은 83.3%이었다. 가장 흔한 증상은 월경전기 증후군 집단의 경우 신체증상(54.6%)이었고, 월경전 불쾌기분장애 집단의 경우 '지속적으로 짜증난다'(95.5%)이었다. 월경전 불쾌기분장애 집단의 88.6%에서 증상 때문에 한 달에 1∼2회 이상 일이나 공부에 지장이 초래되었다. 결 론 : 한국 여자대학생 집단이 경험하는 월경전 불쾌기분장애의 유병율과 증상 양상은 외국과 비슷하다. 아울러 월경전 불쾌기분장애 집단은 월경전기 증후군 집단에 비해 기분 증상이 더 흔하고 심하는 점에서 월경전 불쾌기분장애는 월경전기 증후권과 구별되는 하나의 질환 상태임을 시사한다. Objects : More than 75% of women have been reported to experience premenstrual symptoms and three to eight percent of them suffer from premenstrual dysphoric disorder(PMDD). But little is known about prevalence of premenstrual syndrome(PMS) and PMDD and PMS in Korean women who sttended universities at the time of survey. Methods : One thousand four hundred and nineteen subjects were randomly selected with cluster sampling methods among four women's university in Seoul. We measured the severity of premenstrual symptoms using six-point rating scale developed by the authors on the basis of the research criteria for PMDD in DSM-IV. Premenstrual worsening of symptoms was defined as increase in symptom scores of more than 75% from follicular to luteal phase score. And also, we compared characteristic symptoms, eating behaviors, and functional impairments between PMS and PMDD. Results : After excluding inadequate data according to our exclusion criteria, 873 of 1419 subjects(61.5%) were included in the estimation of the prevalence of PMS and PMDD. Each prevalence rate of PMS and PMDD was found to be 83.3% and 5.0% on the basis of 75% change method respectively. The most frequent symptom was physical symptoms such as headache or breast tenderness(56.4%) in PMS and 'felt irritable'(9.5%) in PMDD. Of the 44 subjects with PMDD, 39(88.6%) reported to have experienced the impairment in work or school at least once per month because of premenstrual symptoms. Conclusions : Our results indicate that prevalence and symptoms of PMDD in Korean university women are similar to those in western culture. The finding that mood symptoms were more frequent and severe in PMDD than in PMS implies that the former may be a disordered condition to be distinguished from the latter physiologic one.

간세포암의 고주파 열치료 후 천자침 경로를 통한 전이 1례

조영완,박석주,진한영,김준영,이재익,강명주,박정하,윤정희,박성재,지삼룡,이연재,이상혁,설상영 인제대학교 2006 仁濟醫學 Vol.27 No.-

Radiofrequency ablation(RFA), as a form of minimally invasive therapy for hepatocellular carcinoma, has become an important treatment modality. Because of limitation of surgery, RFA has become standard therapy for hepatocellular carcinoma in some situations. But there are some complications of RFA such as bleeding, infection, hematoma, adjacent organ thermal damage including intestinal perforation, needle track seeding, and so on. There are few reports in the literature that systematically evaluate the incidence of needle tract seeding and its associated risk factors. And only 2 cases of needle tract seeding of hepatocellular carcinoma after RFA were reported in Korea. We report a case of needle tract seeding of hepatocellular carcinoma after RFA.

Effects of selenium on the survival and invasion of trophoblasts

Na, Jee Yoon,Seok, Jin,Park, Sohae,Kim, Jung Seok,Kim, Gi Jin The Korean Society for Reproductive Medicine 2018 Clinical and Experimental Reproductive Medicine Vol.45 No.1

Objective: Placental oxidative stress is known to be a factor that contributes to pregnancy failure. The aim of this study was to determine whether selenium could induce antioxidant gene expression and regulate invasive activity and mitochondrial activity in trophoblasts, which are a major cell type of the placenta. Methods: To understand the effects of selenium on trophoblast cells exposed to hypoxia, the viability and invasive activity of trophoblasts were analyzed. The expression of antioxidant enzymes was assessed by reverse-transcription polymerase chain reaction. In addition, the effects of selenium treatment on mitochondrial activity were evaluated in terms of adenosine triphosphate production, mitochondrial membrane potential, and reactive oxygen species levels. Results: Selenium showed positive effects on the viability and migration activity of trophoblast cells when exposed to hypoxia. Interestingly, the increased heme oxygenase 1 expression under hypoxic conditions was decreased by selenium treatment, whereas superoxide dismutase expression was increased in trophoblast cells by selenium treatment for 72 hours, regardless of hypoxia. Selenium-treated trophoblast cells showed increased mitochondrial membrane potential and decreased reactive oxygen species levels under hypoxic conditions for 72 hours. Conclusion: These results will be used as basic data for understanding the mechanism of how trophoblast cells respond to oxidative stress and how selenium promotes the upregulation of related genes and improves the survival rate and invasive ability of trophoblasts through regulating mitochondrial activity. These results suggest that selenium may be used in reproductive medicine for purposes including infertility treatment.

Gastrectomy and nigrostriatal dopaminergic depletion in de novo Parkinson's disease

Chung, Seok Jong,Jeon, Seun,Yoo, Han Soo,Yoon, Jung Han,Lee, Jee Eun,Kim, Joong‐,Seok,Kim, Soo‐,Jong,Oh, Jungsu S.,Kim, Jae Seung,Ye, Byoung Seok,Sohn, Young H.,Lee, Phil Hyu John Wiley Sons, Inc. 2019 Movement disorders Vol.34 No.2

카카오의 AI 기반 영상 처리 기술

윤지석(Jee Seok Yoon),석흥일(Heung-Il Suk) 한국정보과학회 2019 정보과학회지 Vol.37 No.2

자가-문맥 배깅을 활용한 뇌종양 영역 자동 분할

윤지석(Jee Seok Yoon),석흥일(Heung-Il Suk) 한국정보과학회 2017 한국정보과학회 학술발표논문집 Vol.2017 No.06

열차승무다이아 생성 자동화를 위한 시스템 개발 및 적용성 분석

윤형석(Hyeong Seok Yoon),강효정(Hyo Jeong Kang),황재영(Jae Yeong Hwang),이재희(Jae Hee Lee),박상미(Sang Mi Park),지상복(Sang Bok Jee),강인석(Leen Seok Kang) 한국도시철도학회 2021 한국도시철도학회논문집 Vol.9 No.2

승무다이아는 열차 승무원의 열차 운행시간, 대기시간 등을 포함하는 근무 시간표를 의미하는 것으로 열차 다이아와 함께 열차 운영을 위한 기본적인 정보이다. 승무다이아의 작성과정은 열차 운영기관의 다양한 제약조건과 경험적 정보 활용 등이 필요하여 상당 부분이 수작업으로 진행되고 있다. 본 연구에서는 제약조건과 목적함수를 활용한 최적화 알고리즘 모형에 의한 승무다이아 자동화 생성 시스템을 개발하며, 사례적용을 통해 시스템의 효율성을 검증하고 있다. 시스템에서 생성된 승무다이아는 실제 수작업 데이터와 비교 시에 총 사업시간이 유사하거나 승무다이아 수 및 미할당 다이아 수가 감소되어 업무 자동화 측면에서 시스템의 활용성이 있음을 확인하였다. The crew diagram refers to the working timetable that includes the business hour and waiting time of the train crew. Together with the train diagram, it is basic information for train operation. The process of generating a crew diagram requires a variety of constraints and empirical information of train operating institutions, and a large part of the process is carried out by hand. This study attempts to develop an automated generation system for crew diagram based on an optimization algorithm model using constraints and objective functions, and verifies the efficiency of the system through a case project. When compared with actual manual data, the total business hours of the crew diagram generated in the system were similar, or the number of crew diagram and the number of unassigned diagram decreased, so it was confirmed that the system is useful in terms of automation of crew diagram configuration.

Power Amplifier for 24㎓ Radar Sensor

Seok-Ho Noh,Myeong-U Sung,Geun-Ho Choi,Habib Rastegar,Shin-Gon Kim,Murod Kurbanov,Pushpa Chandrasekar,Seung-Kyu Choi,Gyu-Min Heo,Keun-Pil Kil,Jee-Youl Ryu,Min Yoon 한국정보통신학회 2016 2016 INTERNATIONAL CONFERENCE Vol.8 No.1

Successful Renal Transplantation with Desensitization in Highly Sensitized Patients: A Single Center Experience

Yoon, Hye Eun,Hyoung, Bok Jin,Hwang, Hyeon Seok,Lee, So Young,Jeon, Youn Joo,Song, Joon Chang,Oh, Eun-Jee,Park, Sun Cheol,Choi, Bum Soon,Moon, In Sung,Kim, Yong Soo,Yang, Chul Woo The Korean Academy of Medical Sciences 2009 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.24 No.suppl

<P>Intravenous immunoglobulin (IVIG) and/or plasmapheresis (PP) are effective in preventing antibody-mediated rejection (AMR) of kidney allografts, but AMR is still a problem. This study reports our experience in living donor renal transplantation in highly sensitized patients. Ten patients with positive crossmatch tests or high levels of panel-reactive antibody (PRA) were included. Eight patients were desensitized with pretransplant PP and low dose IVIG, and two were additionally treated with rituximab. Allograft function, number of acute rejection (AR) episodes, protocol biopsy findings, and the presence of donor-specific antibody (DSA) were evaluated. With PP/IVIG, six out of eight patients showed good graft function without AR episodes. Protocol biopsies revealed no evidence of tissue injury or C4d deposits. Of two patients with AR, one was successfully treated with PP/IVIG, but the other lost graft function due to de novo production of DSA. Thereafter, rituximab was added to PP/IVIG in two cases. Rituximab gradually decreased PRA levels and the percentage of peripheral CD20+ cells. DSA was undetectable and protocol biopsy showed no C4d deposits. The graft function was stable and there were no AR episodes. Conclusively, desensitization using PP/IVIG with or without rituximab increases the likelihood of successful living donor renal transplantation in sensitized recipients.</P>