개선된 OPTIMISTIC CONCURRENCY CONTROL에 관한 연구

장덕철,장문석 한국정보과학회 1984 한국정보과학회 학술발표논문집 Vol.11 No.2

본 연구는 concurrency control을 위한 일종의 commit-time validation에 의한 방식을 제안한다. 이 방식은 read-only 트랜잭션상에 어떠한 제약도 가하지 않음으로써, locking이나 다른 commit-time validation을 행하는 기존 방식보다 더욱 효율적인 concurrency를 제공한다. 트랜잭션의 병행에 대한 정확성을 검증하는 기준으로 serial equivalence를 적용하며, 기존 방식과 비교, 분석한다.

經營情報시스템개발을 위한 多元的 接近方法에 관한 硏究

張德喆 光云大學校 1981 論文集 Vol.10 No.-

"經營情報시스템개발을 위한 多元的 接近方法에 관한 硏究"(A Study on Multidimensional Approach for MIS Development) 本 論文은 "經營情報시스템개발을 위한 多元的 接近方法에 관한 硏究"를 主題로 하여 오늘날 時代的 要請이 切實한 效率的·效果的·經濟的인 經營情報시스템(MIS)의 開發과 관련하여 接近되어야 할 諸硏究分野에 대한 多元的·分析的 接近의 必要性, 範圍, 關聯理論, 最適模型의 提示 等이 硏究要旨가 되고 있다. 段階別 論述의 重要內容은 다음과 같다. 1. 시스템 管理에 관한 基本哲學의 定立과 組織論的 接近의 試圖. 2. 시스템논적 次元에서 시스템분석자의 倫理觀·價値觀 등에 대한 比較·分析과 Symbiotic Approach의 必要性. 3. 經營情報시스템 개발 要因으로서의 心理學的·社會-技術的·環境的 接近. 4. 1980年代 實用的인 經營情報시스템 開發模型의 提示.

C++ 코드로부터 클래스 관련 정보 생성 도구의 설계 및 구현

장덕철,박장한,Jang, Deok-Cheol,Park, Jang-Han 한국정보처리학회 2000 정보처리논문지 Vol.7 No.3

Automation tools for program analysis are needed in order to program understand and maintain, extract the characteristics of object-oriented program such as class name, member function and data member. In this paper, we carried out design and implementation of the automation tool for effective maintenance of object-oriented software. Being based on Reverse Engineering, this approach extracts class relationship information from C++ source code and generates object-oriented model of class diagram using UML as the standard object-oriented methodology. Therefore, this paper provides developers visualized including class information, definitions of classes, inheritance relationships, set relationships, and simple reference relationships. Finally in this paper, we propose a method that construct class relationship information to table in analysis state and make form of table construction to link form so tat developers can perform understanding and maintaining program efficiently. And this method enable to restructure and reuse in object-oriented model.

[硏究報告]效果的인 DSS設定에 관한 硏究 - 특히 Romc Approach를 중심으로 -

장덕철 한국정보과학회 1983 정보과학회지 Vol.1 No.4

This paper suggest how to build the effective and adaptive DSS in terms of ROMC approach such as process-independent approach. The core of this study can be illustrated as followed;<br/> 1. Outline the DSS framework for development approach.<br/> 2. Persue the features of ROMC Approach.<br/> 3. Actualize the iterative design based on the flexible capability and adoptation.<br/> 4. Integrate the DSS into organization.

分散處理 시스템의 同期 메카니즘에 관한 연구

장덕철,이기현 한국정보과학회 1986 한국정보과학회 학술발표논문집 Vol.13 No.1

In this paper, a try to clearly define distributed processing was made by overviewing its elements, and categorizing the targets and dimensions of distribution. A state of the art survey on various mechanisms available for distributed process synchronization was performed in addition to suggesting some relevent case algorithms.

역옹패설(역翁稗說)연구

장덕철 동방한문학회 1987 東方漢文學 Vol.0 No.3

Up to now we have only had a study on poems and stories of Yoˇgong p'aesoˇl (역옹패설) and on casual commentary designed to entertain and converse with. But we have almost never had a regulor, real, full-scale study on all of it. Therefore, I have classified the whole construction throughout the work and have analyzed in the contents of each field. As a result of studying it, the derived conclusions are as follows. 1. The thought of Yik-chae(益齊) has appered in the contradiction and complications mixed Confucianism with Buddhism. 2. The construction of the contents is made up of his poems and stories, his comments on current events, his knowledge of experience, his impression after reading books, his humor and so forth. And this leads to the form of the inclusive, miscellaneous-recording literature. 3. In the style of descriptive writing, he has paid attention to a historical story, propriety or decorum and the story of a personal criticism. In the respect of the contents, he has expressed his firm belief and polical philosophy leaning towards the stabilization of civil administration and his true deepest feeling of patriotism. 4. In the style of a talk on poetry, an anecdote on poetry has inclusively togather the elements of comments on current literature and casual commentary designed to entertain and converse with. In the point of a criticism of poems, he has taken a serious view of an implication, a reality, a strong individuality of poems. In the criterion of comments oh current events literature, it has disposition(氣象), reading between the lines(言外意), feeling at the sight of a picturesque scene(景中情). And a good expression of these above has led to real expressive image, and is estimated as good, fine poems. 5. The kind of a novel in narrative form is mainly composed of non-realistic story (神異譚) and a funny story(笑話), the latter is the main current. This fact has shown us that the author's eyes of confirming the realities of life have stretched out various ways to the social life, if it has been compared with Yi In-lo's Collection to Dispel Leisure(破閑集), Ch'oe Cha's(崔滋) Collection to Relieve Idleness(補閑集). 6. Yik-chae(益齊) is a moderate, sincere, truthful man, and his view of literature has moderate reactionism(復古風). As we know in the above, the various contents of Yoˇgong p'aesoˇl(역옹패설) has been under wide control of the coherent thoughts towards the spirit of independence of our national consciousness, and has been developed in it. And Yoˇgong p'aesoˇl has assumed the form of a full-scale literary miscellany(雜錄), and this fact has resulted in bringing the specialization of the technical form afterwards. After all. Yoˇgong p'aesoˇl has played a bridgehead important role in completing a more full-scale, affluent literature.

組織有效性 評價模型 設定에 관한 硏究 : 特히 systems·contingency approach를 中心 으로

張德喆 光云大學校 1985 論文集 Vol.14 No.-

Ⅰ. Purpose The purpose of this study can be illustrated as follows: 1. Develop Systems/Contingency model for overall evaluation of organizational success. 2. Classify organizational variables in three analytical levels sock as suprasystem, systems, and subsystem under viewing an organization as a system. Its hierarchical relationship introduces means-ends chain concepts so that it has to be able to investigate organizational success from overall viewpoint. 3. Analyze the interrelationship of organizational variables barred on "If-then variety" theory. 4. Suggest the rating index by scoring algorithm according to the measurement module of every organizational variab1e. 5. Establish a systematic evaluation as the modification of the weighted value added in the variety of measurement module. 6. Produce the overall rating index, by developing the overall evaluating simulator, which is an indicator of organization & management as a guidline. Ⅱ. Methodlogy At the first, this study has to be doing theoretical investigation. That is, classifying organizational varibles in terms of overall evaluation of organizational success, it will be systematically analyzed from a point of contingency approach for the purpose of finding out their functional relationships. As commented above and fully explained the theorizing steps, it would include as follows: 1. Partition overall organizational variables concerning the evaluation of organizational success. 2. review literature. 3. ground the theory based on data. 4. generate the theory through comparative analysis of empirical laws and substantive theories. 5. codify the theory of organizational success, through hypothetical statements of the if-then variety. 6. take advantage of serendipity and record intuitive insights as they arise. 7 bring to a conclusion. Ⅲ. Findings 1. If the rating index of evaluatiing criteria such as survival, goal attainment, performance, employee maintenance, and quality of working life come out higher, the probability of organizational effectiveness comes to be higher. 2. The priority of evaluating criteria based on analytical dimensions can be selected as follows: a. Long-range survival from the suprasystem viewpoint. b. Medium-range goal achievement and societal contribution from the systems viewpoint. c. Short-range unit performance, employee maintenance, ailed the quality of working life from the subsystem viewpoint. 3. Both the higher the level of development and the interdependence and the lower uncertainty in organizational environment is, the higher the probability of organizational survival come out. 4. If the environmental interdependence is high and the size is very large, it requires vertical specialization and control function in terms of the structural dimensions of organization. 5. The very high-degree of development in the environment of organization and technological sophistication is calling for horizontal specialization and coordination in terms of the structural dimensions of organization. 6. If the uncertainty of environment is high and the technology is varied, it has to be a diverse structure in terms of the structural dimensions of organization. 7. If the degree of employee maintenance in organization comes to be higher, it is the best way to increase their satisfaction, involvement, and commitment, on the other hand, to decrease a perpetual and temporary withdrawal. 8. If the strategic advantage is on the size of organization, it has to be focused on the internal and the external staff trying to make it efficient. 9. If the strategic advantage is on technological sophistication, organization has to be focused on the internal staff making the research and development pursue. 10. If the strategic advantage is on the technological diversification, organization has to be focused on the external staff.

C++ 코드로부터 클래스 관련 정보 생성 도구의 설계 및 구현

장덕철 ( Duk Chul Jang ),박장한 ( Chang Han Park ) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.3

Automation tools for program analysis are needed in order to program understand and maintain, extract the characteristics of object-oriented program such as class name, member function and data member. In this paper, we carried out design and implementation of the automation tool for effective maintenance of object-oriented software. Being based on Reverse Engineering, this approach extracts class relationship information from C++ source code and generates object- oriented model of class diagram using UML as the standard object-oriented methodology. Therefore, this paper provides developers visualized including class information, definitions of classes, inheritance relationships, set relationships, and simple reference relationships. Finally in this paper, we propose a method that construct class relationship information to table in analysis state and make form of table construction to link form so that developers can perform understanding and maintaining program efficiently. And this method enable to restructure and reuse in object-oriented model.

역옹패설 연구

장덕철(Duk Chul Chang) 慶北大學校 伏賢漢文學硏究會 1987 伏賢漢文學 Vol.3 No.-

XML 웹 서비스 프로그램 개발을 위한 웹 기반의 XML Tree 생성

박영수,장덕철,Park Young-Soo,Chang Duk-Chul 한국정보처리학회 2005 정보처리학회논문지D Vol.12 No.5

For the excellent U web services, the program developers should create both user's client program and the sewer program Recently, the structural alteration of programs are often caused by infernal and external environment concerned with social trends and preferences as well as user's requirements expectations. So, for reducing the development time and workload of XML web service programs, it is necessary to develop the web program generation tools. This paper suggest how to design and implement the web-based XML Tree builder, which was able to provide the information for promptly and easily generating the XML Schema, XML Stylesheet and XML Document through the XML Development Supporting Server System. XML 웹 서비스를 하기 위해서 개발자는 사용자를 위한 클라이언트 프로그램과 서버 프로그램을 함께 개발하여야 한다. 최근 사용자들의 요구와 기대의 증가, 그리고 사회적인 기호와 트렌드 변화 등 내부 ?외부적인 변화가 자주 발생되고 있는 상황에서, 프로그램의 구조 변경이 자주 발생하게 된다. 따라서 XML을 기반으로 한 웹 프로그램 개발의 시간과 비용을 줄이기 위해 웹 프로그래밍을 위한 자동 생성 도구의 개발이 필요하게 된다. 본 연구에서는 개발 지원 서버의 통해 개발자가 XML 스키마, XML 스타일시트 그리고 XML 문서를 쉽고 빠르게 생성하기 위한 정보를 제공할 수 있는 웹 기반의 XML Tree를 설계하고 구현하는 방법을 제시한다.