• Proceedings of the Korean Operations and Management Science Society Conference
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• 한국경영과학회 2001년도 추계학술대회 논문집
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• pp.290-293
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• 2001

The mid-schedule planning of the ship is making a schedule about the process from cutting to erection. The ship consists of lots of blocks. This block has different process because of the shape of the block varies in accordance with the ship-type and the part position of the ship. The type and order of each block process initially must be generated for the mid-schedule planning. In this paper, the process planning, described as above is preparing the basic information before scheduler make a plan with the prepared manhour. The scheduling is done with this process planning which includes the information of the process order. This paper shows the research about three methods to design the process planning. First, investigate the expression method about information of the process planning for the mid-schedule planning in real workplace. Second, design the object of the process planning on the basis of investigating the expression method. Finally, develop the prototype of object on the basis of this designed process planning and then find the practical use in the mid-schedule planning. The object, which is developed in this paper, contains the main algorithm. In case of developing The Mid-Schedule Planning System, this object is expected to be utilized very easily as consisting another object.

• Journal of Information Technology Applications and Management
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• 제9권1호
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• pp.85-96
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• 2002

Nowadays an information exchange on XML such as B2B electronic commerce is spreading. Therefore the systematic and stable management mechanism for storing the exchanged Information is needed. For this goal there are many research activities for connection between XML application and relational database. But because XML data have hierarchical structures and relational database can store only flat-structured data, we need to store XML data in object-oriented database that support hierarchical structure. Accordingly the modeling methodology for storing XML data in object-oriented database is needed. In order to build good quality application systems, modeling is an important first step. In 1997, the OMG adopted the UML as its standard modeling language. Since industry has warmly embraced UML, its popularity should become more important in the future. So a design methodology based on UML is need to develop efficiently XML applications. In this paper, we propose a unified design methodology for XML applications based on object- oriented database using UML. To this goal, first we introduce a XML modeling methodology to design W3C XML schema using UML and second we propose data modeling methodology for object-oriented database schema to store efficiently XML data in object-oriented databases.

• The Transactions of the Korea Information Processing Society
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• 제5권5호
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• pp.1246-1256
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• 1998

MIB(Management Information Base), one of the key components of network management system, is a conceptual repository for the information of the various managed objects. MIB stores and manages all the structural and operational data of each managed resources. Therefore, MIB should be protected properly from inadvertant user access or malicious attacks. International standard ISO/IEC 10164-9 describes several managed object classes for the enforcement of MIB security. Those managed object classes described access control rules for security policy. But the exact authorization procedures using those newly added managed object classes are not presented. In this paper, we divide managed object classes into two groups, explicit and implicit ones, and describe the access authorization procedure in Z specification language. Using Z as a description method for both authorization procedure and GDMO's action part, the behaviour of each managed object class and access authorization procedure is more precisely and formally defined than those of natural language form.

• Convergence Security Journal
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• 제3권3호
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• pp.59-66
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• 2003

In this paper the CORBA security services is designed and implemented conforming to the CORBA Security Services Specification. We implemented a Security Information Management system for object-oriented distributed systems based onthe CORBA (Common Object Request Broker Architecture) Security specification baseed on Repository.

• Proceedings of the Korean Society for Information Management Conference
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• 한국정보관리학회 2000년도 제7회 학술대회 논문집
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• pp.153-156
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• 2000

인터넷을 통해 유통되는 디지털 콘텐츠의 식별과 접근을 위한 고유 식별체계로서 DOI(Digital Object Identifier)의 개발, DOI의 구문구조 DOI의 관리와 운영, DOI 메타데이터와 장르, DOI변환과 핸들시스템(Handle System)을 소개하고, DOI의 국내 도입을 위한 DOI 등록 시스템, DOI 변환 시스템, DOI 검색시스템 INDECS 메타데이터를 이용한 디지털콘텐츠 유통관리시스템, DOI 참조링크 시스템의 개념적 설계와 구축내용을 기술한다.

• KIISE Transactions on Computing Practices
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• 제22권6호
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• pp.296-301
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• 2016

Object-based storage is an efficient storage solution that can handle unstructured data and shows better security and scalability than traditional block-based storage. However, in terms of power management, Object-based storage writes multiple copies in storage cluster, hence many servers consume unnecessary power in idle state. In order to resolve this problem, it is necessary to apply power management strategy by adjusting power mode of servers in idle state according to their workloads. In this paper, we proposed a new dynamic power management (DPM) method to transform power mode of storage servers dynamically according to workload information sent from proxy server. The experimental result shows that the proposed power management technic reduces total power consumption by 12% in the OpenStack based Swift object storage.

• Journal of the Korean Operations Research and Management Science Society
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• 제21권3호
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• pp.175-195
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• 1996

In conventional analysis methods, data and process are loosely coupled for building information systems. Several object oriented approaches have been proposed to integrate data and process. However, object oriented analysis requires a radical paradigm and thus system analysts find difficulties in generating object models direcctly from end users. To alleviate these difficulties, this paper proposes a methodology for deriving an object model by using structured analysis results. Objects are obtianed primarily from entities in Entity-Relationship Diagram. Methods are obtained through the analysis of the relationship between processes and data stores in Data Flow Diagram Methods are assigned to the objects by using object/process matrices. A real-life case is illustrated to demonstrate the usefulness of the methodology.

• Journal of Industrial Technology
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• 제25권A호
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• pp.123-131
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• 2005

Semantic object model has widely been recognized as an alternative data modeling approach to entity-relationship model for database system design. In this study, we have presented a semantic object model for intermediary type shopping mall consisting of multiple buyers and sellers. Essential processes and information with regard to the customer management, product management, price estimation, product order etc. have been considered for this study. Upon careful examination and analysis of them, a detailed semantic objects and attributes have been drawn and structured into semantic object diagrams. The final objects were converted into an entity-relationship diagram so that intuitive comparison could be made for relational database design. The results in this study may form a conceptual framework for both academic concerns and more complicated system applications.

• The Transactions of the Korea Information Processing Society
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• 제6권5호
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• pp.1153-1165
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• 1999

In various fields of information technology, it is growing up the needs about dynamic content management systems to store and manage SGML(Standard Generalized Markup language) documents in a database system. In this paper, we consider the issue of storing SGML documents that having complex hierarchical structure into a database system, and then propose a data model based on ODMG(Object Database Management Group) object model in order to store SGML documents without loss of information. Because the proposed data model reflects physical element structure and logical entity structure of SGML documents, it is able to store the SGML document in a database system at the system at the element- level granularity without any information loss. And also the proposed data model can be adapted among ODMG-compliant object database management systems. Finally, we will discuss on the implementation details of SGML repository system supports the functionality of automatic database schema creation for any DTD(Document Type Definition0, the functionality of storing the SGML document, the functionality of dynamic document assembly from stored database objects to SGML document, and the functionality of indexing and searching for database objects.

• The KIPS Transactions:PartC
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• 제8C권5호
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• pp.683-692
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• 2001

In this paper, an integrated network management agent has been proposed and implemented to support different network management protocols, SNMP (Simple Network Management Protocol) for Internet and CMIP (Common Management Information Protocol) for OSI networks. We used MOVI (Managed Object View Interface) concept to integrate the different network management systems. We reviewed three models to design the integrated network management agent and then selected a suitable model among them. The logical structure of an agent, the implementation method and the operation of each module have been shown in this paper. The osimis and ucd-snmp network management system have been used as the reference systems for implementing our system. The integrated network management agent can support the internetworking between Internet and OSI networks in the aspect of network management. Using MOVI concept, if a new management system is introduced, internetworking with this can be achieved by adding the new interface on the view interface of managed object.