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황민규,장윤석,이시춘,김도환,조길원,이화성,조정호 한국고분자학회 2009 Macromolecular Research Vol.17 No.6
We improved the performance of pentacene-based thin film transistors by changing the curing environment of poly(4-vinylphenol) (PVP) gate dielectrics, while keeping the dielectric constant the same. The field-effect mobility of the pentacene TFTs constructed using the vacuum cured PVP was higher than that of the device based on the Ar flow cured gate dielectric, possibly due to the higher crystalline perfection of the pentacene films. The present results demonstrated that the curing conditions used can markedly affect the surface energy of polymer gate dielectrics, thereby affecting the field-effect mobility of TFTs based on those dielectrics.
황민규,이영해 한국경영과학회 2010 한국경영과학회 학술대회논문집 Vol.2010 No.6
서비스 산업의 비중이 지속적으로 증가하고, 서비스사이언스의 대두로 서비스에 대한 이해가 제품지배 논리에서 서비스지배 논리로 많이 전환됨에 따라 서비스 시스템을 새로이 체계적으로 이해하고 연구할 필요성이 증가하고있다. 최근 서비스의 중요성을 인식하고 관심이 증가하였지만 아직 그에 대한 연구는 많이 부족하다. 특히 기존에 기업의 경쟁우위 달성을 위해 필수요소로 인식되었던 공급사슬관리(SCM)에 대한 연구는 제조업 중심으로 되어있어 서비스업에 적용하는데 한계가 있다. 본 논문에서는 서비스 사이언스의 관점에서 서비스 공급사슬을 체계적으로 분석하고 운영의 최적화를 위한 모델을 수립한다. 또한, 시뮬레이션 최적화 기법 사용을 위한 프레임워크를 제시한다.
황민규,황소민,임광열,정용휘,송제니퍼김,Hwang, Min-Kyu,Hwang, So-Min,Lim, Kwang-Ryeol,Jung, Yong-Hui,Song, Jennifer Kim 대한미세수술학회 2012 Archives of reconstructive microsurgery Vol.21 No.2
Purpose: Mass can compress around tissue and cause deviation of normal anatomical structures. Often, mass grows toward neurovascular pedicle and encircles depending on the nature of mature mass. Neglecting neurovascular involvement of the mass is a serious problem not to be overlooked. Authors have performed microscopic approach regarding mass involving the neurovascular pedicle in the hand. Materials and Methods: From January 2007 through February 2012, retrospective analysis for nine cases of mass involving neurovascular pedicles was done. Patients were evaluated preoperatively by ultrasonography or MRI and checked intraoperative finding. Masses were evaluated by site, preoperative evaluation, involved neurovascular pedicle, histopathologic diagnosis, complication, and recurrence. Results: The site of mass involving neurovascular pedicles was 4 cases on the wrist, 2 cases on the palm, 2 cases on the finger, 1 case on the hand dorsum. Involved neurovascular pedicles were 3 radial arteries and nerves, 3 proper digital arteries and nerves, 1 radial artery, 1 superficial branch of radial nerve, 1 common digital artery and nerve. The histopathologic diagnosis of mass were 3 ganglions, 2 giant cell tumors, 2 epidermal cysts, 1 fibroma, and 1 benign spindle tumor. There were 2 cases of recurrence and secondary excisions were performed. Conclusion: Neurovascular pedicle injury can lead to serious complication like sensory and motor disorders, distal part ischemia, and so on. In case of mass suspected neurovascular invasion, accurate preoperative evaluation such as ultrasonography or MRI is necessary. To prevent any neurovascular related complication during mass excision, delicate surgical technique using a microscope becomes essential.
황민규,이영해 한국경영과학회 2011 한국경영과학회 학술대회논문집 Vol.2011 No.5
The Service industry is getting bigger these days. In spite of this, the number of research focused on supply chain is small. In particular, studies related to supply chain optimization are rarely existed. This study deals with tourism industry which represents the service industry. Also, this study develops an optimization model of the tourism supply chain which reflects some characteristics of the service. Above all, the structure of tourism supply chain based on a real tour industry is established. Then, in order to develop the mathematical model, mixed-integer programing is used. Finally, the result of mathematical model is solved to analyze the optimization result.
황민규,이영해 대한산업공학회 2011 대한산업공학회 춘계학술대회논문집 Vol.2011 No.5
The Service industry is getting bigger these days. In spite of this, the number of research focused on supply chain is small. In particular, studies related to supply chain optimization are rarely existed. This study deals with tourism industry which represents the service industry. Also, this study develops an optimization model of the tourism supply chain which reflects some characteristics of the service. Above all, the structure of tourism supply chain based on a real tour industry is established. Then, in order to develop the mathematical model, mixed-integer programing is used. Finally, the result of mathematical model is solved to analyze the optimization result.
적외선 열화상 분석기법과 시뮬레이션 분석기법에 의한 창호 시스템의 전열성능 비교, 분석에 관한 연구
황민규,김강수 대한건축학회 2007 대한건축학회논문집 Vol.23 No.7
A curtain wall system can make several problems like a condensation. So many studies about a condensation resistance were already performed and these studies usually used the method of computer simulation. But the gap still exists between actual measurement and computer simulation. So in this study, simulations which applied several intensive boundary conditions and input data were performed on the window system and these results were compared with the results of actual measurements. When external radiation enclosure is applied in a boundary condition, i. e. comprehensive input, the gap between actual measurement and computer simulation was reduced to 1.2~2.0℃. That way of applying external radiation enclosure is a desirable method to estimate the thermal performance.
황민규,이영해 대한산업공학회 2010 대한산업공학회 춘계학술대회논문집 Vol.2010 No.6
서비스 산업의 비중이 지속적으로 증가하고, 서비스사이언스의 대두로 서비스에 대한 이해가 제품지배 논리에서 서비스지배 논리로 많이 전환됨에 따라 서비스 시스템을 새로이 체계적으로 이해하고 연구할 필요성이 증가하고있다. 최근 서비스의 중요성을 인식하고 관심이 증가하였지만 아직 그에 대한 연구는 많이 부족하다. 특히 기존에 기업의 경쟁우위 달성을 위해 필수요소로 인식되었던 공급사슬관리(SCM)에 대한 연구는 제조업 중심으로 되어있어 서비스업에 적용하는데 한계가 있다. 본 논문에서는 서비스 사이언스의 관점에서 서비스 공급사슬을 체계적으로 분석하고 운영의 최적화를 위한 모델을 수립한다. 또한, 시뮬레이션 최적화 기법 사용을 위한 프레임워크를 제시한다.
황민규,김성식,김강수,Hwang, Min-Kyu,Kim, Seong-Sik,Kim, Kang-Soo 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.3
In past, parking lot was placed on the ground and for the reason air quality was not in problem. But recently parking lot has been placed under the ground and the air quality becomes problem. So in this study, the ventilation performance on the underground parking lot was estimated by using CFD software and alternative system was suggested. Three case studies are handled in this study. 1st case is just an underground parking lot. 2nd case is about an underground parking lot where has 4 fan rooms on each floor and 3rd case is about an underground parking lot where has 4 fan rooms and 30 guidance fans on each floor.