• Proceedings of the Korean Society of Computer Information Conference
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• 2011.01a
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• pp.273-275
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• 2011

본 논문에서는 효과적인 객체 추적을 위해 가우시언 믹스처 기반의 그림자 제거 알고리즘을 제안하고, GPGPU(General Purpose GPU) 아키텍처인 NVIDIA 사의 CUDA(Compute Unified Device Architecture)를 이용하여 기존의 객체 추적 알고리즘의 컴퓨팅 시간을 개선하는 모델을 제안한다. 이 시스템은 GPU를 이용한 가우시언 믹스처 모델 기반의 객체 추적 알고리즘으로 전경과 배경 분리 시 CPU와 GPU의 프로세스 시간을 적절히 분배하여 소모되는 연산시간을 줄이고, 고 해상도의 이미지에서의 객체 분리 및 추적의 시스템 처리량을 최대화 한다. 객체 추출 후 효과적인 추적을 위해 예측 모델인 칼만 필터를 사용한다.

• Journal of Korea Multimedia Society
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• v.14 no.4
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• pp.554-566
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• 2011

Service-oriented architecture(SOA) is a paradigm where reusable units are independently executable and only accessible through outer interfaces. Standardized methodology based on SOA has not been decided yet although a lot of efforts have been made for systems using SOA. Therefore Development of system using SOA is facing many difficulties currently. In this paper, service oriented methodology of function based model for supporting legacy system is proposed. Standardized methods for function based reusability through analysing SOA methodology are proposed and guide lines for improvement of service reusability are presented.

• Journal of KIISE:Software and Applications
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• v.33 no.6
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• pp.525-538
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• 2006

Component-Based Software Engineering (CBSE) is widely accepted as new paradigms for building applications with reusable assets. Mismatch problems occur while integrating the assets and make a burden in CBSE. Therefore, a larger-grained reuse unit than a component such as a framework is required, and it consists of relevant components, connectors and domain-specific architecture. The benefits of frameworks over components are commonly known, however, the key elements and internal structure of framework has not been clearly defined. We believe most of the framework models proposed in recent works remain at conceptual level. In this paper, we propose a practical-level framework reference model, and define key elements of frameworks. The research goal is to precisely identify concrete elements of a framework, inter-connection of components within a framework, extended notion of connectors, and tailored meaning of architecture In a framework. Hence, the proposed framework can be practically implemented in common object-oriented languages and with middleware such as lava, J2EE, CORBA Component Model (CCM) and NET.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.12
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• pp.1898-1903
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• 2021

Recently, the need to be wary of internal access such as internal access as well as external attackers' access to work has increased due to network expansion, cloud infrastructure expansion, and changes in working patterns due to COVID-19 situations. For this reason, a new network security model called Zero Trust is drawing attention. Zero Trust has a key principle that a trusted network does not exist, and in order to be allowed access, it must be authenticated first, and data resources can only be accessed by authenticated users and authenticated devices. In this paper, we will explain these zero trust and zero trust architectures and examine new security application strategies applicable to various companies using zero trust and the process of building a new security system based on the zero trust architecture model.

• Journal of Information Technology and Architecture
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• v.11 no.2
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• pp.157-173
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• 2014

As Air Base Defence, Anti-Aircraft Defence and Nuclear-Biological-Chemical Protection model considered as ground operation models in Republic of Korea Air Force are designed as the voice-centered system between participant nodes, there is a problem communicating accurately. In recent years, the military is developing a command and control capability using data communication technology to solve the problem. Therefore, this paper proposes new model to maximize efficiency of performance improvement through the Data Communication-based Future Air Base Defence Model. We refer to a research paper that is related existing and developed new model. and then we really experimented under WiBro Network that is constructed to Air Base for maintenance control. Based on the analysis and the test result of new Air Base Defence Model, we have concluded that the performance improvement effect is reached.

• Journal of Information Technology and Architecture
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• v.9 no.3
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• pp.233-241
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• 2012

Architecture framework (AF) is a guideline to define components needed to develop and operate enterprise architecture (EA), and to define relationships among the components. There are many architecture frameworks to operate EA of governments and businesses such as Zachman framework, DoDAF, TOGAF, FEAF, and TEAF. DoDAF is the most representative AF to support the development of the EA in the military domain. DoDAF is composed of eight viewpoints and 40 views that are affiliated with the viewpoints. To develop an AF for a specific goal, system architects decide a set of views. Furthermore, they determine data that are needed for a view modeling. However, views and data in DoDAF are structurally inter-related explicitly and/or implicitly. So, developing an AF for a specific goal is going to be a project to be carried out over a long haul. To reduce the burden of its development, in this paper, we develop ONT-SAF (Ontology for DoDAF) that can infer inter-relationships like referential and transitive relationships and the sequences among the views. Furthermore, to promote reusability and consistency of the views and the data within an AF, we adopt the view-data separation strategy. ONT-DAT contains classes like 'viewpoint', 'view', 'data', 'expression method', and 'reference model', and 11 properties including 'hasView.' To prove the effectiveness of ONT-SAF, we perform a case study.

• The Magazine of the IEIE
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• v.32 no.4 s.251
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• pp.116-127
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• 2005

본 논문은 커뮤니티라는 메타포(metaphor)를 이용한 유비쿼터스 컴퓨팅 환경의 구축에 관한 문제를 고찰한다. 이를 구현하기 위한 방법으로 먼저 커뮤니티 기반 컴퓨팅의 포괄적인 개념과 기술 이슈를 정립하였고, 커뮤니티의 효과적인 상호작용을 지원하기 위해 통합 프레임워크를 이용, 상황인지기반 커뮤니티 관리 컴포넌트들을 설계하고자 했다. 본 논문의 결과로서 커뮤니티의 클래스와 라이프 모델, 커뮤니티 기반 컴퓨팅을 위한 시스템 아키텍처를 도출하였다 이로써 복합적인 유비쿼터스 서비스를 자율적으로 제공하기 위한 유비쿼터스 환경 구축기반을 마련하였다.

• Broadcasting and Media Magazine
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• v.23 no.3
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• pp.85-91
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• 2018

최근 미디어 산업 분야에서 블록체인에 대한 관심이 점차 고조되고 있다. 본 고에서는 초연결 사회에서 믿음을 만들어주는 신뢰 인프라인 블록체인 기술의 미디어 산업 적용 가능성을 알아보고자 한다. 이를 위해 4차 산업혁명 시대에 블록체인이 신뢰 기술로 각광 받게 된 이유를 고찰하고, 미디어 산업 분야에서 활용된 사례를 살펴본다. 실제로 블록체인을 미디어 산업에 도입하기 위해서는 기술성숙도에 대한 분석이 필요하다. 현재는 블록체인에 대한 전체적인 시각의 부재로 인한 미디어와 블록체인의 만남에 대해 지나친 낙관 혹은 비관이 난무하고 있다. 이러한 문제에 대한 돌파구로 대표적인 오픈소스 블록체인 플랫폼인 이더리움과 하이퍼레저 패브릭 아키텍처를 재구축하고 분석했다. 아키텍처 분석결과 미디어 산업계에서 요구하는 피처를 충족하기에는 현재의 블록체인 플랫폼이 아직 부족함을 발견하였다. 블록체인 기술이 마치 인터넷 초창기 시절과 유사하다는 점을 인지할 필요가 있다. 중장기적으로 블록체인 기반의 직거래 비즈니스 모델 연구와 함께 이를 실현해줄 블록체인 미디어 서비스플랫폼 연구개발이 수반된다면 미래의 미디어 산업은 블록체인에 의해 크게 요동칠 것으로 예측된다.

• Annual Conference on Human and Language Technology
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• 2023.10a
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• pp.143-148
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• 2023

본 논문에서는 금융 도메인 특화 사전학습 언어모델인 KF-DeBERTa(Korean Finance DeBERTa)를 제안한다. KF-DeBERTa는 대규모의 금융 말뭉치를 기반으로 학습하였으며, Transformer 아키텍처와 DeBERTa의 특징을 기반으로 구성되었다. 범용 및 금융 도메인에 대한 평가에서 KF-DeBERTa는 기존 언어모델들에 비해 상당히 높은 성능을 보였다. 특히, 금융 도메인에서의 성능은 매우 두드러졌으며, 범용 도메인에서도 다른 모델들을 상회하는 성능을 나타냈다. KF-DeBERTa는 모델 크기 대비 높은 성능 효율성을 보여주었고, 앞으로 금융 도메인에서의 활용도가 기대된다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.4B
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• pp.269-277
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• 2012

The future battlefield environment has changed platform centric warfare into a network centric warfare. The NCO is a operational concept to improve combat power through information sharing, shared situational awareness, decision making and synchronized action based on powerful network grid. In addition, these operational environment is composed of physical, information, cognitive and social domains. The platform environment system is associated with the OSI 7 layer. However, OSI 7 layer is limited to express NCW environment including cognitive and social domains. Therefore, we requires a new model for expressing cognitive and social domains. After we developed a new model, this model applied to the NCW architecture taxonomy.