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김범수,최승원,김범수,류정선,서정기,이홍복 대한알레르기학회 1998 천식 및 알레르기 Vol.18 No.4
Eosinophilia accompanied by eosinophilic invasion and organ dysfunction may develope idiopathic hypereosinophilic syndrome. Any organ can be involved including bone marrow, lung, skin, heart, gastrointestinal tract and nervous system. Cough, dyspnea, pleural effusion or chest pain are common pulmonary manifestation, and they may be attributed to parenchymal infiltration, pulmonary embolism or heart failure. We report a 43-year-old woman with idiopathic hypereosinophilic syndrome involving bone marrow, skin, and lung. The patient developed acute dyspnea and chest pain. High resolution CT demonstrated multiple wedge-shaped segmental involvement with pleural effusion thought to be a pulmonary infarction or heart failure. Echocardiography could not find any abnormality. Lung biopsy showed interstitial eosinophilic infiltration with increased eosinophils in BAL fluid. She was treated with high dose corticosteroid and hydroxyurea. Within few days, most of her symptoms disappeared and chest radiography nearly cleared up.
김범수,김성진,김도영 한국컴퓨터정보학회 2023 韓國컴퓨터情報學會論文誌 Vol.28 No.1
건설은 인간에게 생활의 편안함을 제공하는 가장 오래된 분야 중 하나이다. 그러나, 현재 IT 분야뿐만 아니라 다른 분야의 지속적인 발전에도 불구하고 여전히 낮은 자동화로 인한 생산성 저하가 심각한수준이다. 특히 건설 분야에서 4차 산업혁명 기술의 활용은 이제 막 시작한 단계이다. 블록체인은 4차산업혁명 기술 중 하나로서, 여러 장소, 국가 또는 조직과 같은 다양한 지리적 위치에 분산된 데이터를복제, 공유 및 동기화하는 데 사용되는 일종의 분산 데이터베이스이다. 본 논문에서는 블록체인을 소개하고 이를 활용한 건설 분야의 사례를 일곱 가지 주제별로 문헌 분석한다. 분석 결과, 건설 분야에서블록체인 기술의 이해도를 높이고 향후 다양한 서비스 개발에 유용성을 제공할 것으로 기대된다.
벨로우즈 방식의 폐회로를 가진 공압식 심실 보조장치의 최적 작동을 위한 압력 조절 시스템
김범수,이정주,남경원,정기석,안치범,선경,Kim, Bum-Soo,Lee, Jung-Joo,Nam, Kyung-Won,Jeong, Gi-Seok,Ahn, Chi-Bum,Sun, Kyung 대한의용생체공학회 2007 의공학회지 Vol.28 No.4
Ventricular Assist Device(VAD) has switched its goal from a short-tenn use for bridge-to-transplantation to a long-tenn use for destination therapy, With this goal, the importance of long-tenn reliability gets more interests and importances, H-VAD is an portable extracorporeal biventricular assist device, and adopts an electro-pneumatic driving mechanism. The pneumatic pressure to pump out blood is generated with compression of bellows, and is transmitted in a closed pneumatic circuit through a pneumatic line. The existing pneumatic VAD adopts a air compressor which can generate stable pressures but has defects such as a noise and a size problem. Thus, it is not suitable for being used as a portable device, These problems are covered with adopting a closed pneumatic circuit mechanism with a bellows which has a small size and small noise generation, but it has defects that improper pneumatic setting causes a failure of adequate flow generation. In this study, the pneumatic pressure regulation system is developed to cover these defects of a bellows-type pneumatic VAD. The optimal pneumatic pressure conditions according to various afterload conditions for an optimal flow rate were investigated and the afterload estimation algorithm was developed, The final pneumatic regulation system estimates a current afterload and regulate the pneumatic pressure to the optimal point at a given afterload condition. The afterload estimation algorithm showed a sufficient performance that the standard deviation of error is 8.8 mmHg, The pneumatic pressure regulation system showed a sufficient performance that the flow rate was stably governed to various afterload conditions. In a further study, if a additional sensor such as ultrasonic sensor is developed to monitor the direct movement of diaphragm in a blood pump part, the reliability would be greatly increased. Moreover, if the afterload estimation algorithm gets more accuracy, it would be also helpful to monitor the hemodynamic condition of patients.
Measurement of Incident-reporting Rate for Developing a Leading Indicator of Safety Culture
김범수,진상은,장성록 한국안전학회 2018 한국안전학회지 Vol.33 No.6
Various leading indicators of safety culture have been advocated for proactive actions as lagging indicators have limitations in reflecting the attitudes and behaviors due to their reactivity and low sensitivity. This study proposes a model of incident-reporting culture (IRC) and determines the influence of the components on incident-reporting rate (IRR) in order to develop proactive indicators of safety culture. A questionnaire survey was administered to 614 workers at a chemical company in Korea, and the internal psychological aspects were explored by using perceptions, attitude, and backgrounds. The relationship between these factors and IRR was quantitatively confirmed. The workers are more reluctant to report injury than property damage, the perception of severity is the most influencing factor, and most property damages are reported regardless of worker’s willingness. These features should be prioritized when improving IRC, and the criteria of IRC need to be aligned with safety culture.
김범수,최필호,김일식,황일영 국제문화기술진흥원 2019 International Journal of Advanced Culture Technolo Vol.7 No.2
The purpose of this study is to reduce the costs required to proactively prevent the turnover intention by the results of personality type of locus of control. which is the behavioral outcome of the members of the organization. Based on this problem consciousness, the present study focused on the personal characteristics of the members of the organization in the enterprise. Among the individual characteristics, the intentions, which are distinct from others, are called personality, Focusing on the locus of control among these types of characteristics of the organization members, the study about how these control positions affect their job involvement and their turnover intention. The results validated in this study are summarized as follows. Among the personality types of the organization's members, internals are found to have higher job involvement than externals. In addition, it was found that internals among the personality types of the members of the organization lower the meaning of turnover intention than external member. In order to overcome uncertain management environment and create and sustain a competitive advantage in the organization, management has a weight-oriented trend and Increasing job involvement in organizational members and lowering their turnover intention will lead to continued productivity, among other things, important management items that managers and managers should pursue. Given these aspects, it is deemed necessary to analyze the personality aspects of the members of the organization and to transform and manage a new management mindset that leads to the enhancement of the personality as an internal rather than an external one and the task immersion of the members of the organization based on it.