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김범석,이정훈,오명돈,김인호,윤성수,김병국,박선양 대한내과학회 2007 The Korean Journal of Internal Medicine Vol.22 No.1
Pneumatosis intestinalis (PI) is an uncommon disorder characterized by an accumulation of gas in the bowel wall, and has been associated with a variety of disorders and procedures. We describe a 35-year-old man who undertook hematopoietic stem cell transplantation due to myelodysplastic syndrome. An abdominal X-ray demonstrated extensive PI with pneumoperitoneum mimicking hollow organ perforation. However, the patient had no abdominal symptoms and there was no evidence of peritoneal inflammation. After two weeks of conservative management, including bowel rest and antibiotics, his pneumoperitoneum resolved spontaneously without any complications. Of the many factors that affect the gastrointestinal tract mucosal integrity, intramural pressure, and bacterial flora-produced intraluminal gas interact to produce PI. If the condition is accompanied by bowel ischemia, portomesenteric venous gas, metabolic acidosis, and abdominal sepsis, or if PI is severe in extent immediate surgical intervention is indicated. The described case supports that a mechanical rather than a bacterial etiology underlies the pathogenesis of PI.
김범석,민재형,김명석 대한산업공학회 2011 대한산업공학회 춘계학술대회논문집 Vol.2011 No.5
In this research, we formulate a model to evaluate the corporate value and stock value by utilizing Data Envelopment Analysis (DEA). The integrated model through DEA with PE Ratio, PB Ratio, PS Ratio and volatility can overcome each ratio"s limitation. In order to grasp its effectiveness, the stock value earning rates and volatilities of the DEA strategy and the existing strategies were compared and analyzed. The results showed that the stock value earnings rates of the portfolio made through the DEA strategies were higher, and the volatilities were lower, than those made through other strategies. Particularly, in the sharply plummeting market, it could be seen that the differences in the stock price earnings rates and volatilities were particularly prominent. This research is meaningful in that formulated model can be effective stock investment strategies, and the DEA index can be used as a new index that can integrate diverse indices.
Detection of Nitroaromatic Compounds Based on Fluorescent Silafluorene Chemosensors
김범석,Kim, Bumseok The Basic Science Institute Chosun University 2010 조선자연과학논문집 Vol.3 No.1
A simple and rapid method is described for detecting nitroaromatic explosives in air or seawater with the use of photoluminescent organosilicon compounds. The synthesis, spectroscopic characterization, and fluorescence quenching efficiency of silafluorenes are reported. Silafluorenes were synthesized from the reduction of dilithiobiphenyl with dichlorosilanes. Two silafluorenes were used for the detection of nitroaromatic compounds. Detection of nitroaromatic molecules, such as 2,4-dinitrotoluene (DNT), 2,4,6-trinitrotoluene (TNT), and picric acid (PA), has been explored. A linear Stern-Volmer relationship was observed for the first three analytes. Fluorescence spectra of silafluorenes obtained in either toluene solutions or thin films displayed no shift in the maximum of the emission wavelength. The photoluminescence quenching occurs by a static mechanism.
위험도 정보를 이용한 Technical Specifications 개선을 위한 정량적 의사결정 방법론 연구
김범석,제무성 한국안전학회 2003 한국안전학회지 Vol.18 No.2
The utility and the nuclear research institutes in korea have conducted research for improving inefficient requirements in technical specifications using the results of probability risk assessments and informations with risk. However, the guidance for reviewing the improved technical specifications has not been developed. The objective of this study is to develop a decision-making framework for investigating and reviewing the technical documents associated with the changes of technical specifications. This study has developed a decision-making framework for reviewing the improvements of the RI-TS(Risk-Informed Technical Specifications). This work may contribute to enhancing both the safety and the efficiency of nuclear power plants by changing Technical Specifications proposed by the utility.
지속가능한 발전을 위한 지방공기업의 역할과 나아갈 방향
김범석,박동훈 한국경영컨설팅학회 2018 경영컨설팅연구 Vol.18 No.2
본 연구에서는 국가와 지역사회의 지속가능한 발전을 위한 지방공기업의 역할과 나아갈 방향에 대해 제안하고자 한다. 구체적으로 먼저 다양 한 유형의 지방공기업의 수행 업무가 UN에서 제시한 지속가능한 발전 목표(Sustainable Development Goals, SDGs)의 17개 목표 중 12개 이상 일치함을 확인하였다. 이러한 사실은 지방공기업이 지속가능한 발전을 위해 이미 직간접적으로 역할을 수행하고 있음을 확인함으로써 지속가 능한 발전을 위한 이행주체로서의 가능성에 대한 실증적 근거로 제시할 수 있다. 뿐만 아니라 본 연구에서는 공공성, 수익성, 지역성이라는 특성 을 지니고 있는 지방공기업이 지속가능하기 위한 전략적 모형으로 지역사회와의 협력을 통해 경제적 이익과 사회적 이익을 동시에 추구한다는 공유가치창출(Creating Shared Value, CSV) 모형을 제안하였다. 지방공기업이 지속가능한 발전의 이행주체로서 그 역할을 다하여 국가와 지역 사회에 기여할 수 있기를 기대한다. Recently, as the increasing interest of sustainable development, which includes environmental, social, and economic concerns, the role of the local public enterprises has been emphasized. In this study, we identify what local public enterprises have done for sustainable development and provide directions for sustainablemanagement of local public enterprises. To achieve the sustainable development which is the global object, the UN presented sustainable development goals (SDGs) that is consisted of 17 goals, 169 detailed goals and 241 indices. However, lack of people’s interest in SDGs and unclear subjects for implementation of SDGs can be seen as a limitation of SDGs. More specifically, we compare the 17 goals of SDGs and roles of the various types of local public enterprises, and figures out 12 out of 17 goals of SDGs are similar to the purpose of establishment of local public enterprises. This result shows that local public enterprises have already been performing the role for sustainable development directly or indirectly, so we propose the local public enterprises as subject of implementation for sustainable development. In addition, we find that characteristics of local public enterprises such as public concern, profitability, and locality is similar as the concept of CSV(Creating Shared Value) fromPorter and Kramer (2011), which is pursuing both economic and social benefits through cooperation with the local community. Through this result, we suggest CSV as a strategic model for local public enterprises’s sustainable management. These findings will help stakeholders including managers, directors, and staffs to better understand the complex and uncertain environment that an organization faces in terms of sustainable development.