• 한국IT서비스학회:학술대회논문집
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• 2007.11a
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• pp.431-436
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• 2007

교육정보화를 중추적으로 추진하고 있는 한국교육학술정보원에는 고객에게 양론의 서비스와 콘텐츠를 제공하기 위한 도구로써 정보기술아키텍처를 선택하였으며, 이를 통하여 향후 모든 정보학 사업의 기반과 더불어 정보시스템 관리체계로써의 역할인 IT Governance를 추진하기 위한 역할을 수행하고자 한다. '05년부터 추진해온 정보기술아키텍처 사업과 더불어 '97년 학술연구정보서비스 정보기술아키텍처 도입을 통해 축적된 지식과 경험을 토대로 향후 교육관련 기관 컨설팅을 추진하고자 하며, 본 연구와 관한 자세한 내용은 다음과 같이 논의하였다.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.169-172
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• 2009

현재 많은 기업이나 조직이 전사아키텍처(이하 EA)기반에서 어플리케이션 시스템(이하 응용시스템)을 구축 및 운영하고 있으나 응용시스템 개발 단계에서 EA관점의 응용시스템 아키텍처(응용아키텍처)를 충분히 고려하는 경우는 드물었다. 본 논문에서는 EA관점의 응용시스템 구축을 효과적으로 수행하기 위해서 프로젝트 내 어플리케이션 아키텍트(이하 AA)의 주요업무를 정의하고 조직의 EA를 만족할 수 있는 수행방법을 도출하였다. 소프트웨어 아키텍트(이하 SA)와 AA의 수행업무를 고찰하여 효과적인 프로젝트 수행을 위한 조직구성을 정의하고 AA의 수행업무 중 EA와 밀접한 관련이 있는 업무에 대해 수행 방법을 연구하였다. 또한 EA 응용레벨 별 산출물과 소프트웨어 아키텍처 정의서와의 일관성을 유지할 수 있는 방안을 도출하였다.

• The KIPS Transactions:PartD
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• v.17D no.5
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• pp.317-326
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• 2010

Service Oriented Architecture (SOA), which supports various features such as interoperability and reusability of IT resources, comes into the spotlight as an effective approach for adapting new business environmental changes. SOA, however, has some problems including the high realization complexity and low Return on Investment (ROI). To solve these problems, Web Oriented Architecture (WOA) has gained attention. However, it also has some drawbacks about security concerns and unstable message transmissions. In this paper, we design a novel integrated architecture that classifies services into inside and outside ones and applies SOA for the former and WOA for the latter, respectively. By converging the advantages of SOA and WOA simultaneously, the proposed architecture becomes more simple and service-oriented, and can satisfy diverse requirements of customers. The usefulness evaluation of the proposed architecture is conducted through the Analytic Hierarchy Process (AHP) scheme.

• The KIPS Transactions:PartD
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• v.16D no.5
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• pp.755-766
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• 2009

Software architecture allows us to make many decisions about a software system and analyze it even before it exists in order to make systematic and planned development possible. Similarly, architecture-based software evolution planningmakes planned evolution possible by allowing us to make many decisions about evolution of a software system and analyze its evolution at the level of architecture design before software evolution is realized. In this paper, we develop a framework for architecture-based software evolution planning for the class of deterministic evolution plans by defining and relating various essential concepts and developing its valuationmechanism so that a plan with the greatest value among candidate plans can be selected as an optimal plan. A case study is conducted for explicating the framework and exemplifying its usage.

• Journal of KIISE
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• v.42 no.8
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• pp.1010-1021
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• 2015

Big data systems are widely used to collect large-scale log data, so it is very important for these systems to operate with a high level of performance. However, the current Hadoop-based big data system architecture has a problem in that its performance is low as a result of redundant processing. This paper solves this problem by improving the design of the Hadoop system architecture. The proposed architecture uses the batch-based data collection of the existing architecture in combination with a single processing method. A high level of performance can be achieved by analyzing the collected data directly in memory to avoid redundant processing. The proposed architecture guarantees system expandability, which is an advantage of using the Hadoop architecture. This paper confirms that the proposed architecture is approximately 30% to 35% faster in analyzing and processing data than existing architectures and that it is also extendable.

• 한국IT서비스학회:학술대회논문집
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• 2007.05a
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• pp.15-20
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• 2007

공공부문에서의 정보화 투자효과의 현실화, IT 중복투자의 사전방지, 개발된 여러 정보시스템 간의 원활한 연계와 상호운용성 확보 등을 달성할 수 있도록 해주는 ITA/EA 도입이 의무화됨에 따라 정보기술아키텍처에 대한 성과평가가 중요한 이슈로 부각되고 있다. 이러한 시점에서 본 연구는 한미 양국 정부의 정보기술아키텍처 성과평가 현황을 검토하고, 우리나라 범정부 정보기술아키텍처 제도에 대하여, 합리적 성과평가 수행을 위한 여섯 가지를 제안하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.172-175
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• 2013

사이버물리시스템(CPS)은 실시간 제약으로 타이밍에 민감한 특징이 있으며, 산업 영역에 적용시 시스템 동작과 안전필수 로그의 특정한 패턴을 나타내는 대용량의 실시간 데이터를 생성시킨다. 본 논문은 공개소스프로젝트인 하둡에코시스템을 이용한 CPS 데이터분석 아키텍처를 소개한다. CPS 처리의 특징 때문에 그 대용량의 데이터 처리는 하나의 머신에서 분석될 수 없으므로, 하둡에코시스템을 통하여 실시간 기반으로 생성되는 데이터를 저장하고 처리하는 시스템 아키텍처를 제안한다. 하둡분산파일시스템(HDFS)은 거대한 CPS 데이터의 저장을 위한 기본 파일시스템이고, 하이브는 데이터웨어하우징 처리를 위한 CPS 데이터분석에 사용된다. 플룸은 서버들로부터 데이터를 수집하고 HDFS에서 그 데이터를 처리하기 위해 사용되며, Rhive는 데이터 마이닝과 분석을 적용하기 위해 사용된다. 이러한 아키텍처를 개관하고, 또한 효과적인 데이터 분석을 위해 사용한 시스템 설계 전략을 소개한다.

• Journal of KIISE:Software and Applications
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• v.32 no.8
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• pp.730-741
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• 2005

Layered Architecture is a kind of nodule decomposition techniques, which decomposes a program by generality This paper proposes a ]aver based method for recovering layered architecture from object-oriented program and checking conformance against architectural document. To specify the rules for layered style in object-oriented program, we define a partially ordered set on modules by module use relationship and module layer relationship by module override relationship. The meaning of module layer relationship is explained with an example from design patterns. Steps to recover layered architecture from program are described and a metamodel for the recovery is proposed. Architecture recovery is performed on source codes from open-source software project, and the implication of parts that do not conform to its architectural document is discussed. As a result of checking, it is pointed out that, although the parts are considered allowable exceptions of layered architecture, their modifications should be controlled carefully.

• Journal of Information Technology and Architecture
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• v.10 no.3
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• pp.315-321
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• 2013

The ROK military has established the MND-AF (Ministry of National Defense- Architecture Framework) and is applying it when developing architecture for Enterprise (MND), Segment (component) and Solution (weapons and force support system). The AMM (Architecture Meta model) of the MND-AF supports the establishment of interoperability by systematizing the architecture information structure defined by the Architecture artifact, describing the relationship between data and also by liking reference models and Information technology standard, common components, and MND-Meta data. which are interoperability standards. However, the MND-AMM has insufficient linkage with the standards, which places constraints on applying interoperability standards when developing Solution architecture. This study suggests a logical data model (OV-7c) from the MND-Meta-data-based Architecture meta model that will enhance the application of MND meta data managed by the MND interoperability standard when developing Solution architecture.

• The KIPS Transactions:PartD
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• v.11D no.2
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• pp.407-414
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• 2004

The US DoD architecture framework defines architecture Products according to three viewpoints : operational view, system view, and technical view. But, its coarse-grained development process causes leakage of the details In transforming among different views. It also uses different methods for architecture products development, so that the levels of those products are not consistent. So. we propose MND AF(Ministry of National Defense Architecture Framework) for military environment to solve those problems. We propose additional architecture products to achieve consistency, including “architecture disciplines definition description,”“organization-to-activity relationships matrix,” “system definition description,” and “technical reference model,” etc. We also propose the architecture development process in more detail through seven steps. In addition, we propose the applicability of those products to the life cycle processes of the acquisition management. MND AF can provide consistency and traceability of architecture products, provide the basis for sl·stem integration and interoperability. Also, architecture developers can construct architecture in a more effective and efficient way through MND AF.