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이도학,김식,현무용,Lee, Do-Hak,Kim, Shik,Hyun, Mu-Yong 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.11
Distributed programming can be greatly simplified by language support for distributed communication. Many web-browsers now offer some form of active objects and the number and types of them are growing daily in interesting and innovative ways. Java applets are well known as one kind of active object related to web-browser. This paper focuses in distributed active objects which is one kind of active objects that can communicate with other active objects located in different machines across the Internet. Java RMI and CORBA IDL are two major programming environments for distributed active objects which are non compatible with each other. To make discussion concrete, we introduce a single application as implemented on two environments : the HORM, adopting RMI mechanism, and the OrbixWeb2.0.1, adopting CORBA specification, respectively. Binding, inheritance, polymorphism, object passing and callbacks across the machine boundary in distributed programming environments are issued. The results show that some differences in the implementation of distributed active objects can have a significant impact on how distributed applications are structured. The comparison between two implementations on the programming environments will be the basis for building the translation system between HORB to OrbixWeb and vice versa. 분산 프로그래밍은 분산 커뮤니케이션에 대한 언어적 지원을 기반으로 상당히 단순화 될 수 있다. 현재, 많은 웹 브라우저들은 다양한 형태의 액티브 객체들을 제공하고 있으며, 그 수와 유형은 빠른 속도의 증가 추세에 있다. 자바애플릿은 널리 알려진 웹 브라우저 관련 액티브 객체중의 하나이다. 이 논문은 인터넷 상에 분산되어 있으면서 서로 정보를 교환할 수 있는 분산 액티브 객체의 구현에 관하여 기술한다. 분산 액티브 객체를 구현함에 있어서, 접근방식이 다르고 상호 호환성이 결여된 주요한 두 프로그래밍 환경은 RMI와 CORBA IDL 방식이다. 분산 액티브 객체의 구현상 쟁점들을 명확하게 하기 위해서, RMI 메커니즘을 채택한 HORB와 CORBA를 채택한 OrbixWeb2.0.1 환경 하에서 하나의 어플리케이션 프로그램을 각각 구현하였다. 부산 객체 사이의 바인딩, 상속성. 다형성, 객체의 전달, 콜백은 구현상 중요한 쟁점들이었다. 실험결과는 분산 액티브 객체를 구현하는데 있어서 작은 차이가 분산 어플리케이션의 구성에 상당한 영향을 미칠 수 있음을 보여 주었다. 두 프로그래밍 환경 하에서 구현된 어플리케이션 간의 비교는 각각의 환경에서 구현된 어플리케이션 사이의 상호 변환 시스템을 구축하기 위한 기초 연구가 될 것이다.
RMI와 CORBA 환경하의 분산 액티브 객체의 설계 및 구현에 대한 비교 분석
이도학(Lee Do Hak),김식(Kim Shik),현무용(Hyun Mu Yong) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.11
Distributed programming can be greatly simplified by language support for distributed communication. Many web-browsers now offer some form of active objets and the number and types of them are growing daily in interesting and innovative ways. Java applets are well known as one kind of active object related to web-browser. This paper focuses on distributed active objects which is one kind of active objects that can communicate with other active objects located on different machines across the Internet. Java RMI and CORBA IDL are two major programming environments for distributed active objects which are non compatible with each other. To make discussion concrete, we introduce a single application as implemented on two environments : the HORB, adopting RMI mechanism, and the OrbixWeb2.0.1, adopting CORBA specification, respectively. Binding, inheritance, polymorphism, object passing and callbacks across the machine boundary on distributed programming environments are issued. The results show that some differences in the implementation of distributed active objects can have a significant impact on how distributed applications are structured. The comparison between two implementations on the programming environments will be the basis of building the translation system between HORB to OrbixWeb and vice versa.
울산시 사택의 유형분류와 계획특성에 관한 연구 - 1962~1995
이도학(Lee Do-Hak),한삼건(Han sam-geon) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
This study aims to classify Company houses into several types from the view point of physical planning. The object of this analysis are 45 apartment complexes supplied from 1962 to 1995 in Ulsan which is one of the largest city and known for its heavy industries in Korea. The method of classification is the Cluster Analysis by 23 indices about physical planning of Company's housing quarters. As the result of this analysis, we could classify them into 5 types and found out conditions of location of each housing complexes.
군 의료의 역할과 기능 재정립을 통한 한국형 군(軍)의료모델 개발 (사단급 이하 일차의료를 중심으로)
정기영 ( Ki-young Chung ),김종호 ( Jong-ho Kim ),이도학 ( Do-hak Lee ),양동희 ( Dong-hee Yang ) 국군의무사령부 2011 대한군진의학학술지 Vol.42 No.1
Through various studies and surveys conducted among field units, this research analyzes the future status of military medicine and presents an alternative such as the following for the Korean military medical model. First, the medical support system of Korean military should be improved through the development of primary sanitation medicine. Second, health promotion should be activated through the development of interservice prevention medicine. Third, military health information should be shared and an information system should be established. Fourth, specialization suitingthe military medicine should be promoted. Fifth, medical support should be guaranteed for military personnel.