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오늘 본 자료
정인화,안규대,임현호,우광숙,김경희,김정만,이지현,한진영 대한진단검사의학회 2018 Laboratory Medicine Online Vol.8 No.4
Bone marrow necrosis (BMN) is a pathologic state which is derived from various disease entities. Most commonly, it is accompanied by hematologic malignancies such as acute leukemia. The patients with marrow necrosis are generally known to have dismal prognoses but variations exist according to early diagnosis. Here we report a case of BMN in an acute lymphoblastic leukemia patient with Philadelphia chromosome at presentation.
프로토콜 역설계를 이용한 전자전시험장비 제어 및 신호분석 소프트웨어 개발
정인화,Jung, In-Hwa 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.3
In this paper, we have proposed a method and procedure which can find out the unknown network protocol. Although it seems to be difficult to identify the protocol, we can find out the rule in the packet according to the method we have proposed. We have to recognize functions of the system and make the list of events first. Then we capture the network packet whenever the event are occurred. The captured packets are examined by means of the method that is finding repeated parts, changed parts according to the input value, fixed parts and changed parts according to regular rules. Finally we make the test program to verify the protocol. We applied this method and procedure to upgrade Electronic Warfare Test System which is operated by ADD. We have briefly described the redesign of control and analysis software for Electronic Warfare Test System
개선된 속도 추정 알고리즘을 이용한 유도전동기의 속도 센서리스 벡터 제어
정인화,신명호,현동석 전력전자학회 1997 전력전자학회 논문지 Vol.2 No.4
본 논문에서는 유도전동기의 속도 센서리스 벡터 제어에서의 운전특성 개선을 위하여 최근에 제시된 상태 방정식을 이용한 속도 추정 알고리즘을 살펴보고 이 방식이 갖고 있는 문제점들을 해결할 수 있는 새로운 추정 방법을 제안한다. 또한 폐루프 적분 방식의 고정자 자속 추정 알고리즘을 도입하여 고정자 자속 추정의 정확도를 높였다. 특히, 모든 미분항과 적분항들을 등가의 표현식을 통해 나타내어 실제 구현에 있어서 빠른 응답 특성과 잡음에 대한 안정성을 높였다. 시뮬레이션과 실험을 통하여 본 논문에서 제안한 속도 추정기의 타당성을 입증하였다. For high performance ac drives, the speed sensorless vector control and the stator flux orientation concept have received increasing attention. This paper describes a speed and flux sensorless vector-controlled induction machine(IM) drive based on the stator flux-oriented control. To improve the accuracy and operating range, the control system employs the previously presented speed and flux estimation methods, and then we present a developed method of estimating the speed of IM. In the proposed method all differential and integral terms have been eliminated by giving a very fast, low-cost, effective and practical alternative to the methods currently available. The effectiveness of the proposed method is verified by simulations and experimental results.
중국의 행정개혁과 정책정향 : 당우위의 절충형 행정개혁
정인화 고려대학교 정보학연구소 2000 정부학연구 Vol.6 No.2
중국은 당의 공식이념인 '사회주의 시장경제'에 의해 효율적 정부운용을 위한 행정개혁을 추구하고 있다. 당이 정치-경제-사회 전반에서 지도자적 역할을 담당하며 문제를 정의하고 문제해결을 위한 개혁정책을 결정한다. 江澤民체제의 등장 이후에도 중국은 여전히 당 중심의 정부운용방식을 채택하면서 개혁을 가속화시키고 있다. 그런데 서구의 행정개혁이 작은 정부, 탈규제화, 민영화인 데 비해, 중국은 자율성 축소를 위한 내부규칙의 법제화, 운영규칙의 강화 등 베버리안적 개혁을 추구하고 있다. 여기에 더하여 사장중심 통치체제로의 적응을 위해 기업가형 정부개혁도 추구한다. 본 연구에서는 정치지도 원칙의 고수, 베버리안적 관료제로의 개혁, 그리고 기업가형 정부모형으로의 전환 등 세 가지 정책정향이 상호작용하는 중국의 독특한 행정현상을 '당우위의 절출형 행정개혁'이란 개념으로 설명하고 있다. The People's Republic of China strives to reach the new governance through administrative reform for the efficient management of government. China's formal ideology decided by the Party is 'Socialist Market Economy', which means the reform of economic system and opening the door to the world. In the original context of communist society, the Party plays the role of leader all over the political, economic and social areas. The Party defines problems and makes decisions for the solution of the problems. Even in the era of President Jiang's administration, China's reform policy still focuses on the reform of bureaucracy without abandoning the dominant role of the Party. While the western countries' policy orientation toward administrative reform is to replace Weberian bureaucracy with new public management, that is, reform toward small government, deregulation and privatization, China's policy orientation for the new governance is to seek for the western style Weberian reform with an emphasis on the regulation of responsibility and standardization of administrative process. Furthermore, China tries to adopt the administrative reform model of entre-preneurial government to adjust its system for market oriented governance. In this paper, it is found that the administrative reform policy of China is a mixed model oriented toward western-style Weberian bureaucracy and entrepreneurial government under the Party's political leadership. This unique reform policy model is here called as a mixed-style administrative reform.