• Journal of the Korea Society for Simulation
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• v.11 no.2
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• pp.31-43
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• 2002

The High Level Architecture(HLA) for modeling and simulation was developed as means of facilitating interoperability among simulations and promoting reuse of simulations and their components. The purpose of this paper is to provide a summary of the latest release of the HLA concept, supporting utilities and develop the prototyped Transportation Movement Management(TMM) federation. To obtain this goal, the Federation Development and Execution Process(FEDEP) is being applied to development of TMM federation will consist of three federates. This paper outlines the rationale of our approach, describes the application of the FEDEP in the development of the federation, and provides the current status of the federation development. The resulting federation shows complete interoperability among simulation components in the TMM federation and satisfactory simulation outputs. We present a description and process of the federation and the lessons learned with the process utilization for federation development and execution. Furthermore, the issues in establishing a HLA based federation across multiple legacy simulations are discussed.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06b
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• pp.101-106
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• 2007

본 논문에서는 SOA(Service Oriented Architecture) 기반으로 국가 R&D 정보의 종합 조회 기능을 제공하는 국가 R&D 정보시스템(RnDIS: R&D Information System)을 설계 및 구현하였다. 물리적으로 분산되고 각각 별도의 DB를 구성하여 활용하는 이질적인 4개의 응용시스템의 기능을 효과적으로 연계 및 활용하기 위해 유연하며 확장이 용이한 SOA를 채택하였다. 서비스의 식별, 정의, 분석 등의 개발을 위해 CBD 방법론을 확장한 새로운 서비스 개발방법론을 정의 및 활용하였으며, RnDIS를 위해 4개의 어플리케이션 서비스와 4개의 비즈니스 프로세스 서비스를 정의 및 설계하였다. 어플리케이션 서비스는 기존의 자바코드로부터 WSDL(Web Service Description Language)을 생성하는 래핑(wrapping) 방식을 사용하여 구현하였며, 비즈니스 프로세스 서비스는 BPEL(Business Process Execution Language) 엔진을 이용하여 어플리케이션 서비스를 조합하는 방식을 이용하여 구현하였다. RnDIS는 NTIS(National Science and Technology Information System) 공식 홈페이지(http://www.ntis.go.kr)의 종합검색 메뉴로 시범서비스 되고 있으며, 향후 서비스 대상 데이터의 확장과 기능 추가를 통해 정식 서비스를 오픈 할 예정이다.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.41 no.9
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• pp.73-84
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• 2004

This paper suggests a new scalar multiplication algerian to resist SPA which threatens the security of cryptographic primitive on the hardware recently, and discusses how to apply this algerian Our algorithm is better than other SPA countermeasure algorithms aspect to computational efficiency. Since known SPA countermeasure algorithms have dependency of computation. these are difficult to construct parallel architecture efficiently. To solve this problem our algorithm removes dependency and computes a multiplication and a squaring during inversion with parallel architecture in order to minimize loss of performance. We implement hardware logic with VHDL(VHSIC Hardware Description Language) to verify performance. Synthesis tool is Synplify Pro 7.0 and target chip is Xillinx VirtexE XCV2000EFGl156. Total equivalent gate is 60,508 and maximum frequency is 30Mhz. Our scalar multiplier can be applied to digital signature, encryption and decryption, key exchange, etc. It is applied to a embedded-micom it protects SPA and provides efficient computation.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.39 no.5
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• pp.74-86
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• 2002

This paper proposes a VLSI architecture for high-speed data processing of the differential phase detectors with the decision feedback. To improve the BER performance of the conventional differential phase detection, DF-DPD, DPD-RGPR and DFDPD-SA have been proposed. These detection methods have the architecture feedbacking the detected phase to reduce the noise of the previous symbol as phase reference. However, the feedback of the detected phase results in lower data processing speed than that of the conventional differential phase detection. In this paper, the VLSI architecture was proposed for high-speed data processing of the differential phase detectors with decision feedback. The Proposed architecture has the pre-calculation method to previously calculate the results on 'N'th step at 'M-1'th step and the pre-decision feedback method to previously feedback the predicted phases at 'M-1'th step. The architecture proposed in this paper was implemented to RTL using VHDL. The simulation results show that the Proposed architecture obtains the high-speed data processing.

• Journal of Korea Society of Industrial Information Systems
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• v.19 no.6
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• pp.77-85
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• 2014

Until now there have been many kinds of enterprise architecture frameworks including the DoDAF in defense domain, the FEAF in administration domain, and the TEAF in finance domain. These EAFs define EA viewpoints for supporting each domain and propose perspectives and models for each viewpoint. These EAFs provide consistent models from different perspectives that interact with each other. However, they have too many perspectives so that their complexities are too high, or they do not define enough models for concrete architecture description. Especially, they neither consider business values, that mean the ultimate purpose of an organization nor execute processes for achieving the business values. This paper thus proposes the VBEAF, business value based enterprise architecture framework that considers and executes business values in organizational business processes.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.1
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• pp.82-95
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• 2007

The paper focuses on how to classify as well as to define the Architecture Patterns which are popularly used in the design of software architecture. In order to achieve this purpose, we propose not only the revised methodology for Pattern-Oriented Software Architecture Design, but also new method of classification and definition for the Architecture Patterns. Especially, because the patterns are so diverse depending on the level of abstraction and types of applications, it was considered to have some different views of classification of the patterns in order to support convenient access to classified and stored patterns. The abstraction of the pattern is another important result of the research, which is devised for concrete expression of the patterns and for presentation of the interrelation among group of the patterns. The research also includes the extension of the quality model popularly adopted in the software domain, which enables the description of the patterns with the well defined quality attributes in terms of software architecture's point of view.

• Journal of architectural history
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• v.21 no.6
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• pp.35-44
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• 2012

This paper aimed at investigating into the origin and meaning of the Japanese architect Terunobu Fujimori's 'piercing column', and drew a conclusion as follows. First, the piercing column that made its first appearance in his architect debut work Jinchokan Moriya Historical Museum (1991) was conceived unexpectedly from pencil lines on a sketch that went through over the building's roof. And the tree-like natural treatment of the column's surface was influenced by Takamasa Yoshizaka's description of a Mongolian mud-house. Second, most of piercing columns in his later works have nothing to do with a structural role as in Jinchokan, but were designed for a visual effect and as a symbolic gesture. Again, they allude to a tree in nature through a roughly peeling treatment of the surface. Third, considering his ideas in History of Humankind and Architecture (2005), his column could be related to a universal origin of architecture and a symbol of the sun-god faith, and in particular to independent columns of Japanese Shito shrines, such as 'Onbashira' in Suwa and 'Iwanebashira' in Izumo. That is to say, the Fujimori column is a medium that implies the animistic nature-faith of Japan. Nevertheless, Fujimori's naturalism hints at a disquieting quality through an intentional artificiality and a provocative conflict between structure and finish of a building, which might be one aspect of the modern condition, 'uncanny'.

• Journal of the Society of Naval Architects of Korea
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• v.46 no.1
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• pp.43-56
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• 2009

The Korean navy has made many efforts to apply the concepts of PLM (Product Lifecycle Management) and M&S to its naval design and production. However, most of the efforts that have being applied to some acquisition processes, focused only on the element technologies without information models and data frameworks. This study discusses an information model of naval ships for advanced naval acquisitions. We introduce a naval ship product model, and it refers to the DPD (Distributed Product Description) concept of SBA (Simulation-Based Acquisition). To realize the product model concept, we design a data architecture and develop a Product Model Management System (PMMS) based on a PDM System. It is validated through the case study of building the product model of the battle ship that the PMMS has the applicability to effectively manage the naval ship acquisition data on the basis of a 3D product model.

• Nuclear Engineering and Technology
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• v.40 no.5
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• pp.365-374
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• 2008

Dependability-critical systems, such as digital instrumentation and control systems in nuclear power plants, necessitate engineering techniques and tools to provide assurances of their safety and reliability. Determining system reliability at the architectural design phase is important since it may guide design decisions and provide crucial information for trade-off analysis and estimating system cost. Despite this, reliability and system engineering remain separate disciplines and engineering processes by which the dependability analysis results may not represent the designed system. In this article we provide an overview and application of our approach to build architecture-based, dynamic system models for dependability-critical systems and then automatically generate dynamic fault trees (DFT) for comprehensive, tool-supported reliability analysis. Specifically, we use the Architectural Analysis and Design Language (AADL) to model the structural, behavioral and failure aspects of the system in a composite architecture model. From the AADL model, we seek to derive the DFT(s) and use Galileo's automated reliability analyses to estimate system reliability. This approach alleviates the dependability engineering - systems engineering knowledge expertise gap, integrates the dependability and system engineering design and development processes and enables a more formal, automated and consistent DFT construction. We illustrate this work using an example based on a dynamic digital feed-water control system for a nuclear reactor.

• The KIPS Transactions:PartD
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• v.13D no.4 s.107
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• pp.603-612
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• 2006

Recently the web service area is rapidly growing as the next generation IT paradigm because of increase of concern about SOA(Services-Oriented Architecture) and growth of B2B market. Since a service discovery through UDDI(Universal Description, Discovery and Integration) is limited to a functional requirement, it is not considered an effect on frequency of service using and reliability of mutual relation. That is, a quality as nonfunctional aspect of web service is regarded as important factor for a success between consumer and provider. Therefore, the web service selection method with considering the quality is necessary. This paper suggests the agent-based quality broker architecture and selection process which helps to find a service providing the optimum quality that the consumer needs in a position of service consumer. A theory of agent is accepted widely and suitable for proposed system architecture in the circumstance of distributed and heterogeneous environment like web service. In this paper, we considered the QoS and CoS in the evaluation process to solve the problem of existing researches related to the web service selection and used PROMETHEE(Preference Ranking Organization MeTHod for Enrichment Evaluations) as an evaluation method which is most suitable for the web service selection among MCDM approaches. PROMETHEE has advantages that solve the problem that a pair-wise comparison should be performed again when comparative services are added or deleted. This paper suggested a case study with the service composition scenario in order to verify the selection process. In this case study, the decision making problem was described on the basis of evaluated values for qualities from a consumer's point of view and the defined service level.