• 한국IT서비스학회:학술대회논문집
• /
• 2005.11a
• /
• pp.356-365
• /
• 2005

Since their first inception a few decades ago, software components have received much attention mainly due to their alleged benefits of quality and productivity improvement. Despite this, it is yet to be agreed upon what and how components should be designed. This paper aimed to bridge the gap by proposing a collaborative process where the voice of the customer is captured and documented by employing the event and entity models. These requirement elements (WHAT) are cross-tabulated in three relation matrices in accordance with the weights provided by the business users. The requirements are fed into the algorithm invented by the authors to optimize the component grouping (HOW). This collaborative process has been successfully validated at an enterprise wide software development project. The process was effective to help the users more actively involved in the design of the system and made the whole process faster and more adaptive to the changes.

• Journal of Information Processing Systems
• /
• v.8 no.3
• /
• pp.483-494
• /
• 2012

Many recent events, such as terrorist attacks, exposed defects in most sophisticated security systems. Therefore, it is necessary to improve security data systems based on the body or behavioral characteristics, often called biometrics. Together with the growing interest in the development of human and computer interface and biometric identification, human face recognition has become an active research area. Face recognition appears to offer several advantages over other biometric methods. Nowadays, Principal Component Analysis (PCA) has been widely adopted for the face recognition algorithm. Yet still, PCA has limitations such as poor discriminatory power and large computational load. This paper proposes a novel algorithm for face recognition using a mid band frequency component of partial information which is used for PCA representation. Because the human face has even symmetry, half of a face is sufficient for face recognition. This partial information saves storage and computation time. In comparison with the traditional use of PCA, the proposed method gives better recognition accuracy and discriminatory power. Furthermore, the proposed method reduces the computational load and storage significantly.

• Proceedings of the KSRS Conference
• /
• 2002.10a
• /
• pp.45-48
• /
• 2002

Satellite image processing software should be able to support interoperability that is to enable consumers, citizens, large and small businesses and governments to make the fullest possible use of the world's spatial data and spatial processing resources. The goal of interoperability is to perform hands-on research, development, testing, fielding, and validation of potential and existing interoperable geoprocessing technologies. In this paper, component based architecture for fast interoperability is designed to maximize interoperability among the OpenGIS components specified in the OpenGIS abstract specifications and implementation specifications and to mix up the OpenGIS components and the fast access mechanism for high performance.

• Proceedings of the Korean Society for Technology of Plasticity Conference
• /
• 2008.05a
• /
• pp.39-42
• /
• 2008

Alloy 718 nozzle component was manufactured by hot working and electron beam welding process. In this process, domestic 718 materials were applied and evaluated. Hot compression tests were carried out at a lot of process conditions and microstructural evaluation was investigated. Using the results, FEM simulations were performed in order to optimize the hot working process. After hot working, forged work-pieces were machined and welded by electron beam. Final nozzle component were heat treated and their microstructure and mechanical properties were investigated.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.10a
• /
• pp.376-378
• /
• 2001

CBD(Component Based development)가 이미 완성된 소프트웨어 모듈인 컴포넌트들을 특정 목적을 위해 배치하고 조립함으로써 품질 보증된 고생산성의 재사용을 가능하게 됨에 따라, 최근 IT 비즈니스 솔루션 도출을 위한 핵심 적인 기술 전략으로 인식되고 있다. 따라서 영 역에 적절한 컴포넌트의 추출과 개발 및 응용 시스템으로의 전개를 위한 컴포넌트들의 배치와 조립 등을 포함하는 일련의 CBD 프로세스를 실제화 하기 위해서는 아키텍쳐 기반의 접근과 제어가 매우 중요하다. 하지만 대부분의 CBD 연구는 비즈니스 로직들의 기능성을 그룹화한 컴포넌트의 생산에 초점을 두고 있지 컴포넌트간의 상호작용을 명시하는 아키텍쳐 정보의 관리를 간과함으로써 컴포넌트의 조립과 통합을 통한 CBD 시스템으로의 전개는 극히 어려운 실정이다. 따라서, 본 논문에서는 CHD 프로세스 상에서 아키텍쳐 접근의 중요성과 전개 방법을 살펴보고, 컴포넌트 프레임워크(Component Framework)를 위한 아키텍쳐의 계층을 새롭게 재정의 하며 그 의미를 설명한다. 이를 위해 영역 분석 및 설계 정보를 선언적으로 명시하는 수단이며, 도메인 내에서 특정 서비스를 제공하는 컴포넌트간의 일반적 결합 방식의 규정하기 위한 수단으로서 설계 패턴을 이용하여 서비스 아키텍쳐 패턴을 정의하고 실 예로 적용한다.

• Proceedings of the Korean Information Science Society Conference
• /
• 1999.10a
• /
• pp.441-443
• /
• 1999

소프트웨어의 재사용에 관한 문제는 오래 전부터 풀어야 할 과제로 내려왔다. 계속적인 개발에 따른 재사용의 심각함을 인식하고 기존의 제품이나 기능코드 모듈들을 어떻게 재활용 할지에 대해서 연구해 왔었다. 이러한 관점에서 컴포넌트라는 개념의 중요성이 부각되어지고 계속적인 노력을 하고 있는데, 체계화가 잡히지 않은 무분별한 컴포넌트 개발로 인해, 컴포넌트 홍수라는 새로운 문제를 발생시킨다. 따라서, 본 논문에서 컴포넌트 레지스트리라는 어플리케이션을 만들어 컴포넌트들을 응용분야별, 기능별 등으로 분류하여 재사용을 용이하게 하였다. 또한, 컴포넌트 레지스트리를 이용하여 개발자나 사용자들에게 컴포넌트를 공급함으로서 시간과 노력을 줄일 수 있고 통합된 관리로서 표준화가 가능하게 만들었다. 이렇게 체계화된 컴포넌트 관리로서 공유환경을 구축할 수 있고 CBDMS(Component-Based Development & Management System)의 개발을 용이하게 할 수 있다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2018.05a
• /
• pp.276-276
• /
• 2018

In this paper the potential of the Principle Component Analysis(PCA) technique that can be used to detect leaks in water pipe network blocks was evaluated. For this purpose the PCA was conducted to evaluate the relevance of the calculated outliers of a PCA model utilizing the recorded pipe flows and the recorded pipe leak incidents of a case study water distribution system. The PCA technique was enhanced by applying the computational algorithms developed in this study. The algorithms were designed to extract a partial set of flow data from the original 24 hour flow data so that the variability of the flows in the determined partial data set are minimal. The relevance of the calculated outliers of a PCA model and the recorded pipe leak incidents was analyzed. The results showed that the effectiveness of detecting leaks may improve by applying the developed algorithm. However, the analysis suggested that further development on the algorithm is needed to enhance the applicability of the PCA in detecting leaks in real-world water pipe networks.

• Proceedings of the KSR Conference
• /
• 2009.05b
• /
• pp.547-556
• /
• 2009

In this paper, we tried to find the engineering feasibility of the component functions of the seven selected application technologies which are going to be installed on the next generation high speed train as the IT and smart sensor application technologies. The component functions of the seven applications, including the "Emergency or reminder notification", were identified and analyzed. In order to justify the feasibility of applications development, effect analysis and sufficiency analysis were performed. In effect analysis, how each function has an effect on safety, convenience, and efficiency of the passengers and attendants was evaluated. In sufficiency analysis, the importance and implementability of each function as a component was evaluated. The feasibility analysis was focused on the technical aspects of the functions. The following work will be the settlement of the final applications that are going to be designed and implemented. This will be done by studying the strategic feasibility in relation to the service or business of the high speed train.

• Journal of the Korea Society of Computer and Information
• /
• v.7 no.1
• /
• pp.1-7
• /
• 2002

Component-based software development(CBSD) is gaining popularity Effective search and retrieval of desired components, which are stored in a component repository, is a very important issue in CBSD. In this paper. a new weighted synaptic connectivity matrix is proposed to find more appropriate components. An algorithm is proposed for effective search with NOT operator and a proof for the algorithm is Presented . A new procedure to calculate the output vector for a logically combined query is also presented.

• 한국전기화학회:학술대회논문집
• /
• 2002.10a
• /
• pp.65-65
• /
• 2002