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갑상선 전절제술 및 중앙경부 림프절 박리술 후 발생한 유미누출: 3예 증례보고
황승욱·,최향희·,김완욱·,박호용·,정진향,Seung Ook Hwang,Hyang Hee Choi,Wan Wook Kim,Ho Yong Park,Jin Hyang Jung 대한갑상선-내분비외과학회 2013 The Koreran journal of Endocrine Surgery Vol.13 No.3
Chyle leakage is a rare complication of surgery for thyroid cancer that generally develops after lateral neck dissection. Here, we describe chyle leakages experienced after central neck dissection (CND). A total of 615 patients with thyroid cancer were treated by total thyroidectomy with CND between Jan 2012 and Dec 2012 at our facility, and three (0.49%) developed chyle leakages. The amounts of leakage were all less than 100 ml/day. One patient was resolved with conservative management, while the others were treated with conservative treatment and fibrin glue injection in chylous lymphocele. Chyle leakage after CND is very uncommon, and most cases involve minor leakage. Fibrin glue could be a treatment option for chyle leakage following CND.
황승욱,박진영,장수일,Hwang, Seung-Wook,Park, Jin-Young,Chang, Soo-Il 대한소아외과학회 2003 소아외과 Vol.9 No.1
Spontaneous gastric perforation in the newborn is a rare disease that requires early diagnosis and prompt surgical treatment. Between 1988 and 2001 at the Department of Pediatric Surgery. Kyungpool National University Hospital, 9 cases of spontaneous gastric perforation were treated. Seven were males and two females. The mean gestational age and birth weight were 36.7 weeks and 2,455 g respectively. All patients presented with severe abdominal distention and pneumoperitoneum on cross table lateral film of the abdomen. Perforations were located on the anterior wall along the greater curvature of the stomach in six and on the posterior wall along the greater curvature in two. One case showed two sites of perforation on the anterior and posterior wall along the greater curvature. Six patients were managed with debridement and primary closure and the others with debridement and partial gastrectomy. Peritoneal drainage was not performed. There were four deaths; two from sepsis due to leakage from the anastomotic site, one as a result of acute renal failure, and the other by associated respiratory distress syndrome. Spontaneous gastric perforation in the newborn is usually located along the greater curvature. Elevated intragastric pressure is a possible cause of the perforation. Poor prognosis is related to associated diseases and prematurity.
황승욱(Seung-Wook Hwang),송세훈(Se-Hoon Song),김정근(Jung-Keun Kim),이윤형(Yun-Hyung Lee),이현식(Hyun-Shik Lee),진강규(Gang-Gyoo Jin) 제어로봇시스템학회 2008 제어·로봇·시스템학회 논문지 Vol.14 No.9
The conventional PID controller has been widely employed in industry. However, the PID controller with one degree of freedom(DOF) can not optimize both set-point tracking response and disturbance rejection response at the same time. In order to solve this problem, a few types of 2DOF PID controllers have been suggested. In this paper, a tuning formula for a 2DOF PID controller is presented. The optimal parameter sets of the 2DOF PID controller are determined based on the first-order plus time delay process and a real-coded genetic algorithm(RCGA) such that the ITAE performance criterion is minimized. The tuning rule is then addressed using calculated parameter sets and another RCGA. A set of simulation works are carried out on three processes with time delay to verify the effectiveness of the proposed rule.
황승욱(Seung-Wook Hwang),김정근(Jung-Keun Kim),송세훈(Se-Woon Song),진강규(Gang-Gyoo Jin) 한국항해항만학회 2011 한국항해항만학회지 Vol.35 No.3
본 연구는 선박용 Night Vision 시스템을 개발하기 위한 선행연구로 2축 지그와 이를 구동할 수 있는 PCU 보드를 제작하고, 추종 및 안정화 제어루틴을 얻는 문제를 다룬다. 개발한 지그와 PCU 보드를 6DOF 모션 시뮬레이터와 결합하여 실험환경을 구축하고 RCGA를 이용하여 지그 모델의 파라미터를 얻고, 추정된 모델과 RCGA를 이용하여 2DOF PID 제어기를 동조한다. 실험과 시뮬레이션을 통해 제안하는 2자유도 PID 제어기의 유효성을 검토한다. This paper presents the tracking and stabilization problem of a night vision system for marine surveillance. Both a hardware system and software modules are developed to control azimuth and elevation axes independently with compensation for ship motion. A two degree of freedom(2DOF) PID controller is designed and its parameters are tuned using a real-coded genetic algorithm(RCGA). Simulation demonstrates the effectiveness of the proposed method.
서비스 종사자의 감정노동전략과 직무소진 관계에 관한 실증적 연구
황승욱(Seung Wook Hwang),이영기(Young Ki Lee),박동수(Dong Soo Park) 한국산업경영학회 2013 경영연구 Vol.28 No.2
본 연구는 서비스산업 조직에서 고객을 응대하는 접점을 관리해야 하는 서비스업의 특성 상 종사자들의 감정노동전략이 직무소진에 미치는 영향을 확인하였다. 또한 해당 서비스조직 리더의 감성리더십과 상사에 대한 신뢰가 구성원들의 감정노동전략과 직무소진 사이를 조절한다는 것을 실증적으로 분석하였다. 실증자료는 임의표본추출방법을 사용하여 C사 영화관 44개 지점 종업원을 대상으로 직접방문과 우편으로 설문조사를 실시하였다. 조절회귀분석을 통한 실증분석 결과는 서비스 종사자들의 직무수행 과정에서 자신의 직무요구에 대처하여 스스로 선택하는 감정노동전략(표면행동/내면행동)에 따라서 직무소진의 정도가 서로 다르게 나타났다. 또한 리더의 감성리더십과 리더가 종업원들로부터 받는 신뢰성의 정도는 서비스 종사자들의 감정노동전략 선택과 직무소진간의 관계를 어떻게 조절하는지 확인해 볼 수 있었다. 본 연구의 결과는 서비스 종사자들의 감정노동전략이 직무소진과의 관계에서 통계적으로 유의한 직접적 영향을 미치고 또 이러한 관계에서 팀 조직의 리더가 발휘하는 감성리더십과 구성원의 리더에 대한 신뢰가 통계적으로 유의한 조절작용을 하는 것으로 확인되었다. 따라서 본 연구는 실무적으로 서비스 조직의 구성원들이 선택하는 감정노동전략에 따라 그들 개인의 직무소진 정도가 달라진다는 것을 이론적으로 확인하였고, 서비스 직군을 관리하는 팀 리더의 감성리더십과 구성원들의 신뢰 정도가 직무소진을 감소시킬 수 있음을 실무적으로 시사하였다. 이러한 결과는 조직의 입장에서 직무소진관리는 서비스 종사자들의 감정노동전략에 적합한 감성리더십과 팀 조직에서 구성원들로부터의 신뢰를 확보할 수 있는 팀 리더의 개발이 중요시해야 한다는 것을 확인할 수 있었다. This research attempts to confirm the effect of emotional labor strategy on job burnout among service employees who are demanded by customer-facing organizations service industry to display positive emotions in managing contacts with customers by the nature of hospitality job. In addition, it tries to examine empirically any moderating role of emotional leadership and the trust in the relationship between the emotional labor strategy and job burnout among the service employees. The raw data for the study were collected by surveying a convenient sample of 44 cinema sites of "C" entertainment company through questionnaires. The results of multiple regression analyses showed that emotional labor strategies are significantly related to job burnout among service employees displaying emotional regulations to cope with demands of service jobs. Also, it implied a few moderating role of emotional leadership and trust in the relationship. Some implications from the results show that emotional strategy and job burnout are related statistically significant to each other among service employees. And both emotional leadership and trust moderated the relationship between emotional strategy and burnout. That is, for the individuals in service organization, emotional leadership could be an effective tool to reduce their personal job burnout. Theoretically this research identified the importance of top management responsibility for developing emotional leadership and fostering trust among service employees. From the practical viewpoint, it indicated that an organization should provide some HR development programs for effective emotional labor strategy, emotional leadership, and trust in leaders to reduce job burnout of service employees.