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HP 3000 computer System에서 2pass tiny cross assembler 設計
남인길 慶北工業專門大學 1981 論文集 Vol.18 No.-
Cross assembler has been used for conviniently, when memory size is small and the use of operating system is restricted. Recently a host computer which is installed some cross assemblers for micro computer assembly language has been made use of studying. In this paper, both EDITOR function of HP 3000 computer system and learning of IBM assembly language have been taken, 2pass simulated tiny cross assembler has been developed. Having been applied the simulated assembler to HP 3000 computer system, desirable result has been obtained.
본 논문에서는 신경회로망과 유전자 알고리즘을 이용하여 셀룰러 무선채널 할당을 위한 두 가지 최적화 기법
남인길,박상호,Nam, In-Gil,Park, Sang-Ho 한국정보처리학회 1999 정보처리논문지 Vol.6 No.2
본 논문에서는 신경회로망과 유전자 알고리즘을 이용하여 셀룰러 무선채널 할당을 위한 최적화 알고리즘을 제안하였다. 채널할당 과정을 채널할당 문제에 내포된 제한사항들을 나타내는 에너지함수의 최소화 과정으로 규정하였다. 채널간, 인접채널, 사이트간의 세 가지 제한사항이 고려되었다. 최적의 채널할당을 위하여 신경회로망을 이용한 방식에서는 강제적인 채널 할당 및 셀 순서 변화 등의 기법이 개발되었고 유전자 알고리즘 방식에서는 자료구조와 적절한 유전연산자를 개발하였다. 실험결과로서, 두 최적화 방법의 채널할당률을 나타내었고 그 결과들을 비교하였다. In this paper, two optimization algorithms based on artificial neural networks and genetic algorithms are proposed for cellular radio channel assignment problems. The channel assignment process is characterized as minimization of the energy function which represents constraints of the channel assignment problems. All three constraints such as the co-channel constraint, the adjacent channel constraint and the co-site channel constraint are considered. In the neural networks approach, certain techniques such as the forced assignment and the changing cell order are developed, and in the genetic algorithms approach, data structure and proper genetic operators are developed to find optimal solutions, As simulation results, the convergence rates of the two approaches are presented and compared.
Interactive Operation 을 爲한 INTEL 8080 A Assembler의 設計考察
南寅佶 慶北工業專門大學 1980 論文集 Vol.17 No.-
Machine language and Assembly language, which have ability to represent various bit operation by basic system of micro computer, have been used for the micro computer. Particulary, BASIC language has been used for the convinient use of the numerical computation. In this paper, both merits of 2PASS type Interpreter having been taken, a Load-and-go type Assembler has been developed. Having been applied to 8080A basic microcomputer, as it expected, the Load and go type Assembler detected syntax errors promptly, and also reduced input time of source code and effort. And it improved efficiency of memory utilization further than traditional method.
남인길,이두한,사재학 大邱大學校 科學技術硏究所 1994 科學技術硏究 Vol.1 No.-
In this paper, we propose a efficient query optimization mechanism that using syntatic and semantic knowledge in internal knowledge base. Syntatic knowledge represent relational information of tables and semantic knowledge represent internal rules between attributes and attributes. Also syntatic and structure knowledge was stored in internal knowledge base as graphical structure.
객체 지향 데이터베이스에서 쓰기비용을 감안한 다중 선채취기법
남인길,도용석 大邱大學校 科學技術硏究所 1998 科學技術硏究 Vol.5 No.3
This paper presents a set of techniques for improving the efficiency of cache in object oriented database management system. The proposed method is divided into two steps. As the first step, we analyze the disc access frequency and pattern for various queries. Then, based on the analyzing results of the first step, we make prefetching of certain pages which have high degree of access frequency. In addition to this method, in this research, we propose a multiple prefetch caching algorithm that is based on the previous method. Basically this method delay page replacement by considering write cost for pages with information modification. Simulation results show that the proposed method consistently outperforms existent algorithms.
分散 體制에서 사이트 고장 發生時 相互 不一致를 排除한 트랜잭션 commit 프로토콜
南寅佶 慶一大學校 1987 論文集 Vol.3 No.1
This paper presents an efficent distributed transaction commit protocol which is non-blocking and tolerant to multiple crashes. This protocol is different from the well-known two-phase(2P) commit protocol. Particularly, this protocol tries to find out the method in which updates are broadcasted is one-phase without waiting state, and inter site message traffic and log writes are minmized at normal situation. This paper also discusses applying the commit protocol to existing concurrency control technique, the problems of crash detection and procedures for site recovery.
남인길,이두한 대구대학교 산업기술연구소 1992 産業技術硏究 Vol.11 No.-
In this paper, we design and implement a meta-interpreter which can manage point query, range query, and list query in PROLOG database environment that is supported multi-key indexing. Also, by maintaining meta-knowledge for already loaded facts in meta-knowledgebase, this system can avoid the duplicated loads of same facts that decrease performance of query processing.
분산 체제하에서 중첩된 트랜잭션에 대한 로그를 기반으로 한 회복 알고리즘
南寅佶 慶一大學校 1988 論文集 Vol.4 No.1
The concept of nested transactions has been used to provide reliable processing in both centralized and distributed systems. Nested transactions are seen to permit safe concurrency within as well as among transactions, and to enable transactions to fail partially in a graceful and control manner. In this paper, we investigate log-based transaction recovery for nested transactions. Techniques similar to shadow page have been suggested for use in rollback and crash recovery for nested transactions. We first turn our attention to the single-level transaction recovery procedures, and next we extend the single-level transactions recovery algorithm to the nested transaction case.
남인길,김권양 대구대학교 (한사대학) 산업기술연구소 1991 産業技術硏究 Vol.10 No.-
This paper outlines the design strategy of HEMD (Hyper Editor for Mixed-media Documents) which creates, edits, formats, prints and transmits mixed media documents consist of characters, multi-fonts, bit-mapped images, graphics and spread sheets. It is needed to design efficient data structure, software, hardware and human interface for HEMD system.