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박철민 대한경영학회 2004 大韓經營學會誌 Vol.17 No.1
This study did questionnaire examination for analysis of the effectiveness of R&D investment for small and medium -sized firm from March2003 to May 2003. For mitigating error of surveying, this study divided manufacturing industry into two groups; Firm which has above 8% average R&D rate compared with average sales budget and firm which has less than 8% average R&D rate compared with average sales budget. The result of study is below. First, firm which has above 8% average R&D rate compared with average sales budget had got a superior position in terms of management performance at specific variable; man-power for R&D, rate of man-power for R&D, the cost of R&D, the cost of R&D per one employee, compared with other. Second, firm which has above 8% average R&D rate compared with average sales budget had got a superior position in terms of method to gain technology, followed by importing it from domestic and international firms and corporate R&D with college, compared with other. Third, firm which has above 8% average R&D rate compared with average sales budget had got a superior position in terms of applying external sources; technical advice of specialist, consulting of management, cooperated study with college and research institute, compared with other. In conclusion, small and medium -sized manufacturing firm which has less than 8% average R&D rate compared with average sales budget need to improve it and pursue the alternatives to co-operate with college and research institute for R&D.
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GO-16 : Primary omental torsion diagnosed during hysterectomy
박철민,김성엽 대한산부인과학회 2014 대한산부인과학회 학술대회 Vol.100 No.-
Omental torsion is a rare cause of acute abdominal pain. It presents with nonspecific symptoms and signs of an acute abdomen, making it difficult to diagnose preoperatively, because symptoms mimic those caused by other conditions such as appendicitis, cholecystitis, diverticulitis, and other gynecologic diseases. Computed tomography (CT) is an effective and useful method to diagnose and exclude other acute abdominal conditions. Our case presented with sudden right upper abdominal pain with tenderness, rebound tenderness, mild fever (37.2°C), increased ESR (37 mm/hr), increased HS-CRP level (5.97 mg/dL). CT showed a large, well-circumscribed heterogeneous fatty mass and a 7.3 cm subserosal myoma. We could not exclude the myoma as the cause of acute abdominal pain, so we performed an emergency operation with suspicion of omental torsion or necrotic degeneration of the myoma. During the operation, we diagnosed primary omental torsion with infarction and subserosal myoma without secondary degeneration.
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동기부여 인과 경로의 탐색과 해석1. 1. 1. - 공·사조직간 비교 -
박철민 한국정부학회 2004 한국행정논집 Vol.16 No.2
이 연구는 행정조직과 사기업조직 성원들의 동기부여 영향변인과 결과변인을 비교한 뒤 그 원인 분석에 목적을 두고 있다. 이를 위해 부산지역의 행정조직 종사자 365명과 사기업조직 종사자 324명을 대상으로 하여 현장연구를 통해 자료를 수집한 뒤, 경험적 분석을 실시하였다. 분석에 이용된 영향변인으로는 근속연수, 성취욕구, 동료관계, 과업중요성, 역할갈등, 집권도, 보수 및 인사관리, 사회적 평가를, 결과변인으로는 이직의도와 근무성과를 이용하였다. 분석 결과, 전체 모형 뿐 만 아니라 개별적 영향경로에 있어 양 조직의 제안모형간 유의한 통계적 차별성이 존재함을 식별하였다. 이러한 분석결과는 양 조직간 동기부여 영향요인 및 결과변인에 있어 차별적 영향력이 존재할 것이라는 추론을 입증해 줄 뿐 만 아니라, 양 조직 구성원들의 동기부여수준을 높이기 위한 조직 및 인력관리상의 동원 기제에 있어 방법상의 차이가 존재함을 시사하는 것으로 판단된다.
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열음향 냉동기의 설계 및 개발 : I. 내부공간의 음향해석 및 에너지 변환 예측
박철민,이정권,Park, Chul-Min,Ih, Jeong-Guon 한국음향학회 1996 韓國音響學會誌 Vol.15 No.5
열음향 냉동기의 설계시 요구되는 냉동기의 내부음장 특성을 예측하기 위해, 냉동기를 이루는 공명기 구조 및 선형화된 스피커의 모델에 대행 전달행렬기법을 이용하여 해석을 수행하였다. 여러 가지 기본 음향요소들의 전달행렬을 이용하여 공명기를 음향학적 요소들로 분해하고, 스피커의 선형화된 동특성 방정식과 함께 해석함으로써 음향요소들이 직렬로 배열되어 있는 공명기에 대한 음향특성을 얻어 내었다. 또한, 열음향 냉동기의 개발에 있어서 중요한 목표중 하나인 모세관 스택에서의 온도차이를 에너지 방정식을 이용하여 수치적으로 예측하였다. 한 개의 모세관 기공내에서의 음향일의 흐름, 열음향 흐름, 단위 길이당 에너지 손실 등을 단면변화함수를 이용해 표시한 후, 전체 스택에서의 에너지 흐름과 열평형을 고려하였다. 전체 스택에서의 에너지 흐름에 관한 식에 대하여, 내부음장 예측에 의해 구한 물리량을 이용하여, 수치적인 반복계산을 수행함으로써 온도비 및 성적계수를 예측할 수 있었다. 실제 설계된 공명기의 음향 특성의 해석결과가 실험과 잘 일치함을 관찰한 후, Hofler의 열음향냉동기에 대한 열음향 해석을 수행하여 실험결과와 잘 부합됨을 확인할 수 있었다. Acoustical characteristics of internal pipe structures and a loudspeaker of the thermoacoustic refrigerator are analyzed by using the transfer matrix method. The resonator system is dismantled into verious basic acoustic elements, and then linearized transfer matrices are serially combined with the dynamical system of linearized loudspeaker model, that the total system of thermoacoustic refrigerator can be analyzed in terms of frequency characteristics and acoustic field shape. Additionally, by using equations for energy flow through the capillary stack, the temperature distribution over the stack is numerically estimated. After expressing the acoustic work flow, thermoacoustic flow, and energy loss per unit length in a single capillary duct by using the transverse functional variations, overall energy flow rate and energy balance are obtained for the whole capillary stack. The final expression for energy flow through the stack is numerically evaluated by varying physical parameters obtained from the sound field analysis. After confirming good agreements between predicted and experimental results for the interior sound field of a refrigerator model, the thermoacoustic characteristics of Hofler's apparatus is analyzed by the proposed method and it is observed that the results agree well with Hofler's experimental results.
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政策終結理論의 適用性 : 防衛稅政策의 終結過程을 對象으로
김대원,박철민 新羅大學校 1999 論文集 Vol.48 No.-
The purpose of this study is to analyze the influence of the National Assembly in the policy termination process of the national defence tax. More specifically, this study focuses on the role of the National Assembly in the policy termination process of the national defence tax which is given by the constitutional law and national assembly law. The case used in this thesis is the national defence tax that was abolished in the 1990. The study consists of five chapters. The chapter 1 mentions about the purpose, methodology, and extent of the study. The chapter 2 clarifies concept and process of the policy termination as a theoretical base, and then examines framework of the research. The chapter 3 examines the synopsis of the case of the national defence tax. The chapter 4 investigates termination process of the national defence tax, to attain the goal more effectively the termination process is divided into four stages, these are policy termination agenda-setting stage, policy termination making stage, policy termination implementation stage, policy termination evaluation stage. The chapter 5 summarizes the study and then suggests policy implication. The result of the analysis may be summarized as follows : the role of the National Assembly is slight in the policy termination process of the national defence tax, but the National Assembly plays a decisive role in completing policy terminaton by means of institutional competence that is derived from the constitutional law and national assembly law.
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