• Title/Summary/Keyword: Module dependency

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Performance Evaluation of Multi-Module Software System with Imperfect Debugging and Module Dependency (모듈의존성을 갖는 불완전수리 다항모듈 소프트웨어의 성능평가에 관한 연구)

  • Kim, U-Jung;Lee, Chong Hyung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.9
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    • pp.5652-5659
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    • 2014
  • The purpose of this study was to introduce a software task processing evaluation model that considers the following situations: i) a software system is integratedly composed of several number of modules, ii) each modules has its corresponding module task, iii) all module tasks are tested simultaneously, and iv) the processing times of the module tasks are mutually dependent. The software task completion probability with the module dependency was derived using the joint distribution function of Farlie [11]. The results showed that the task completion probability of software increases with increasing module dependency parameter.

System Optimization Technique using Crosscutting Concern (크로스커팅 개념을 이용한 시스템 최적화 기법)

  • Lee, Seunghyung;Yoo, Hyun
    • Journal of Digital Convergence
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    • v.15 no.3
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    • pp.181-186
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    • 2017
  • The system optimization is a technique that changes the structure of the program in order to extract the duplicated modules without changing the source code, reuse of the extracted module. Structure-oriented development and object-oriented development are efficient at crosscutting concern modular, however can't be modular of crosscutting concept. To apply the crosscutting concept in an existing system, there is a need to a extracting technique for distributed system optimization module within the system. This paper proposes a method for extracting the redundant modules in the completed system. The proposed method extracts elements that overlap over a source code analysis to analyze the data dependency and control dependency. The extracted redundant element is used to program dependency analysis for the system optimization. Duplicated dependency analysis result is converted into a control flow graph, it is possible to produce a minimum crosscutting module. The element extracted by dependency analysis proposes a system optimization method which minimizes the duplicated code within system by setting the crosscutting concern module.

A Study on the Object-Oriented Program Slicing using Module Class Dependency Graph (모듈 클래스 종속 그래프를 이용한 객체지향 프로그램 슬라이싱에 관한 연구)

  • Kim, Un-Yong;Jeong, Gye-Dong;Choe, Yeong-Geun
    • The Transactions of the Korea Information Processing Society
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    • v.6 no.7
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    • pp.1805-1816
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    • 1999
  • This paper presents the Module Class Dependency Graph for expressing the dependency relations between classes effectively. The object-oriented language is developed independently at design time, and consists of relationship between classes. Therefore we need to consider these characteristics of independence, and to express effectively the relation of classes which is existed in class hierarchy. In the System Dependence Graph and Class Dependence Graph, the relationship of classes is not expressed. To express the class relationship, we propose the Module Class Dependence Graph, and we verify the effectiveness of this method applying to object constructor, inheritance relationship and dynamic binding. Also, we presents the expressing method of parameter to identify the member data of classes. Using this Module Class Dependency Graph, we can analyze the relationship of module class correctly at design time. This method can be applied to reverse engineering, testing, visualization and other various fields to analyze system.

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Recovery of Software Module-View using Dependency and Author Entropy of Modules (모듈의 의존관계와 저자 엔트로피를 이용한 소프트웨어 모듈-뷰 복원)

  • Kim, Jung-Min;Lee, Chan-Gun;Lee, Ki-Seong
    • Journal of KIISE
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    • v.44 no.3
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    • pp.275-286
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    • 2017
  • In this study, we propose a novel technique of software clustering to recover the software module-view by using the dependency and author entropy of modules. The proposed method first performs clustering of modules based on structural and logical dependencies, then it migrates selected modules from the clustered result by utilizing the author entropy of each module. In order to evaluate the proposed method, we calculated the MoJoFM values of the recovery result by applying the method to open-source projects among which ground-truth decompositions are well-known. Compared to the MoJoFM values of previously studied techniques, we demonstrated the effectiveness of the proposed method.

Improving Parsing Efficiency Using Chunking in Chinese-Korean Machine Translation (중한번역에서 구 묶음을 이용한 파싱 효율 개선)

  • 양재형;심광섭
    • Journal of KIISE:Software and Applications
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    • v.31 no.8
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    • pp.1083-1091
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    • 2004
  • This paper presents a chunking system employed as a preprocessing module to the parser in a Chinese to Korean machine translation system. The parser can benefit from the dependency information provided by the chunking module. The chunking system was implemented using transformation-based learning technique and an effective interface that conveys the dependency information to the parser was also devised. The module was integrated into the machine translation system and experiments were performed with corpuses collected from Chinese websites. The experimental results show the introduction of chunking module provides noticeable improvements in the parser's performance.

A Development of Wire Path Searching Module Using Extended RCA Method (Extended RCA법을 이용한 자동차 전장 경로 설정 모듈의 개발)

  • 임성혁;이수홍
    • Korean Journal of Computational Design and Engineering
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    • v.1 no.1
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    • pp.33-44
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    • 1996
  • This study deals with the development of wire path searching module as a part of automobile wire harness design system. Wire path searching module manages the free space, finds transition locations, and creates bundle paths to dramatically reduce a tedious iterative routing process which results in easy optimization of the bundle paths. A prime policy in the system configuration is to compromise between man's and computer's ability, and make it possible a designer's leading role in designing process. Human input is indispensable to cope with the special cases which were not considered in the initial design stage of the system. In this study, we improve the previous shortest-path-finding algorithm, (VGraph and RCA method) into a new method called Extended RCA. Bundles, connectors and transitions are handled as objects so one can manage and modify physical properties of the objects easily. Therefore a verification is allowed at any desired stage of design. The reuse of previous result is facilitated by using Dependency Structure, which represents the mutual relations among connectors, transitions, and bundles. Dependency Structure makes it possible the elimination of redundant calculating process, and consequently shorter routing time.

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Fabrication of 50GHz internal wavelength locker module for DWDM applications (DWDM 광통신용 50GHz 내장형 파장안정화 모듈 제작)

  • Choi, Kwang-Seung;Park, Heung-Woo;Park, Jun-Hee;Choi, Byung-Seok;Lee, Jong-Hyun;Yun, Ho-Kyung;Eom, Yong-Sung;Moon, Jong-Tae
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2003.04a
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    • pp.198-202
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    • 2003
  • Tunable laser diode module with 50GHz-spacing internal wavelength locker was developed. Angle tilting dependency on FSR and peak wavelength shift and the proper initial tilting angle was calculated. By tilting the etalon, the response of the internal wavelength locker module was tuned. As a result, the fabricated internal wavelength locker module showed good performance over 62 channels.

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A Functional Design of Programmable Logic Controller Based on Parallel Architecture (병렬 구조에 의한 가변 논리제어장치의 기능적 설계)

  • 이정훈;신현식
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.40 no.8
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    • pp.836-844
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    • 1991
  • PLC(programmable logic controller) system is widely used for the control of factory. PLC system receives ladder diagram which is drawn by the user to implement hardware logic, converts the ladder diagram into sequence program which is executable in the PLC system, and executes the sequence program indefinitely unless user breaks. The sequence program processes the data of on/off signal, and endures 1 scan delay and missing of pulse-type signal shorter than a scan time. So, data dependency doesn't exist. By applying theis characteristics to multiprocessor architecture, we design parellel PLC functionally and evaluate performance upgrade. Parallel PLC consists of central processing module, N general processing unit, and a shared memory by master-slave type. Each module executes allocated sequence program by the control of central processing module. We can expect performance upgrade by parallel processing, and reliability by relocation of sequence program when error occurs in processing module.

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Human Interface Software for Wireless and Mobile Devices (무선 이동 통신 기기용 휴먼인터페이스 소프트웨어)

  • Kim, Se-Ho;Lee, Chan-Gun
    • Journal of KIISE:Information Networking
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    • v.37 no.1
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    • pp.57-65
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    • 2010
  • Recently, the character recognization technique is strongly needed to enable the mobile communication devices with cameras to gather input information from the users. In general, it is not easy to reuse a CBOCR(Camera Based Optical Character Recognizer) module because of its dependency on a specific platform. In this paper, we propose a software architecture for CBOCR module providing the easy adaptability to various mobile communication platforms. The proposed architecture is composed of the platform dependency support layer, the interface layer, the engine support layer, and the engine layer. The engine layer adopts a plug-in data structure to support various hardware endian policies. We show the effectiveness of the proposed method by applying the architecture to a practical product.

Parallelizing H.264 and AES Collectively

  • Kim, Heegon;Lee, Sungju;Chung, Yongwha;Pan, Sung Bum
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.7 no.9
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    • pp.2326-2337
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    • 2013
  • Many applications can be parallelized by using multicore platforms. We propose a load-balancing technique for parallelizing a whole application, whose first module (H.264) has data independency and whose second module (AES) has data dependency. Instead of distributing the first module symmetrically over the multi-core platform, we distribute the data-independent workload asymmetrically in order to start the data-dependent workload as early as possible. Based on the experimental results with a compression/encryption application, we confirm that the asymmetric load balancing can provide better performance than the typical symmetric load balancing.