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의료정보시스템이 병원의 내부요인과 성과에 미치는 정종덕 문재영영향에 관한 실증연구 -우리나라의 9개 병원을 중심으로-
정종덕 ( Jeong Duk Jung ),문재영 ( Jae Young Moon ) 경희대학교 경영연구원 2013 의료경영학연구 Vol.7 No.1
The purpose of this study is to find that Hospital Information System positive influence on Hospital Strategy, Work Process, and Employee Satisfaction based on nine Korean Hospitals using causal effect relationship. The result of this study are as follows; first Hospital information system influence on all factors second Hospital Strategy influence all internal factors. finally internal factors influence on Business Results as well. This study suggest not only Hospital Information System has became one of important factor in hospitals in Korea but also it indirect influence on hospital performance.
철도차량용 LED전조등의 수명시험 장비구축을 위한 기초설계
온정근(Jung-Ghun Ohn),정기석(Ki-Seok Jeong),정종덕(Jong-Duk Chung) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
본 논문에서는 철도차량용 100만 칸델라급 LED전조등의 수명시험 장비구축을 위한 기초 설계안을 제안한다. 시험요구조건은 LED광원에 대한 LED제조업체들의 방대한 수명시험 데이터를 근거로 북미조명학회에서 발간한 LM-80-08을 따른다. 시료 수량은 TM-21-11 기준으로 장기 수명 예측에 활용하기 위해 최소 10개 이상을 사용한다. 또한 구축된 시험장비는 최소 6,000시간 동안 광속유지율을 측정할 수 있고 동시에 측정장비의 정션 온도와 공급 전류를 측정 기간 동안 유지해야 한다. 제안한 설계안은 제품 양산 이전에 측정데이터 수집과 수명예측을 위한 기본 시험장비 개발에 기여하며, 향후 철도차량의 사용환경을 반영한 심층연구가 수행되어야 한다. This paper proposes the fundamental design of lifetime test system for light emitting diode (LED) headlight with the luminous intensity of 1 million candela (CD) on a rail vehicle. The test procedure and requirements are referred to by LM-80-08 based on numerous experimental data of LED source from LED luminaire manufacturers, published by Illuminating Engineering Society of North America (IESNA). It aimed to introduce experimental procedure for lamp lumen maintenance factor (LLMF) of LED sources. At least 10 specimens are used for utilizing long lifetime prediction recommended by TM-21-11. And the experimental test system according to proposed design could continuously measure the LLMT for at least 6000 hours, while the current and junction temperature of device should be maintained at specific value or kept lower. The proposed design could be contributed to develop basic test system for obtaining measurement data and predicting lifetime before its product launch. And deep study on test system considering practical conditions of a rolling stock should be carried out in the future.
Multimedia : Technology Push vs Customer Pull;신기술중심 vs 고객중심
Jung, Jeong Duk,Yoon, Jong Hoon 한국정보시스템학회 1997 情報시스템硏究 Vol.6 No.1
멀티미디어를 사용하는 인간의 측면에서 기술에 대한 이해부족, 고객들의 혼란, 컴퓨터 산업의 멀티미디어에 대한 잘못된 이해는 멀티미디어 미래를 깊이 생각하게 하고 조사하게 한다. 멀티미디어 기술이 누구를 위한 것인가라는 질문없이 무엇을 할 수 있는가라고 묻는 것은 적절한 질문이 아니다. 본 논문은 미디어기술 채택에 관한 과거의 경향에 초점을 맞춰 인간에게 적합한 기술이 어떻게 개발되고 인간의 선택이 어떻게 이루어지는지 조사한다.
INVERSE SOLUTION METHODS FOR NETWORK PROBLEMS: THE SHORTEST ROUTE AND CRITICAL PATH METHOD
정종덕 東西大學校 1996 동서논문집 Vol.2 No.1
Algorithms that are used for solving various network problems are interrelated to some extent. Most of them can be formulated using linear programming or corridor fashion models. In general, the minimization of an objective function can often be transformed into the maximization of its negative value. The purpose of this paper is to illustrate how the shortest route algorithm can be expanded to figure out the critical path method of project newworks and vice versa.
기업내용공시제도에 관한 고찰 : the Timely Disclosure 적시공시를 중심으로
형남훈,정종덕 東西大學校 1999 동서논문집 Vol.5 No.-
The corporate disclosure system has its object of protecting investors. It is system which guides investors to make their decision reasonably, by disclosing the corporate information promptly, correctly, and complectly. The system is devided into the periodic reporting and the timely disclosure according to contents and period of disclosure. The object of the study is to examine the problems of the timely disclosure system and then to suggest its reform measures. The study is to investigate the existing disclosure system, expecially the timely disclosure system centering on its offence cases, considering that the puport of disclosure philosophy is the very purpose of securities maket, that is, equal opportunity for using information and security of fair dealings. The timely disclosure system is generally defind as the system which leads listed corportations to disclose material corporate information quickly, exactly, and fairly, so that it secures to fix prices for listed securitied, and investors enable to pass a resonable judgement on investigation reasonably and on his pwn responsibility, by disclosing corporate material information. Secondly, to prevent unfair dealing such as insider dealing in advance, by giving investors and insiders equal chance for using the corporate material information. In conclusion, as the subject of disclosure listed corporation should take the social responsibility for protection of investors, by disclosing not only promptly, correctly, and fairly but positively and spontaneously on the basic of enterprise ethic and the purpose of securities & exchange law. So it will be proved that the fair dealing system fixed and securities markets develop healthly.