• Journal of Digital Contents Society
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• v.7 no.4
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• pp.227-234
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• 2006

While most of the real estate information provided on the web is simply based on the information of the properties like addresses, locations, prices etc, this paper suggests methodologies for the development of a total information system of real estate which can provide, in an one-stop mode, value-added real estate information contents. The total information system of real estate designed in this paper includes a geological information system using a GIS, a property information system using photos and videos, a systemized legal consulting system, a web call center where customers can communicate with real estate experties on the web and lastly marketing analyses system using credit card data.

• Journal of the Korea Society of Computer and Information
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• v.17 no.12
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• pp.169-177
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• 2012

In the development process of application systems, the most important works are analysis and design. Most of the application systems are implemented on database system. So, database design is important. Also, IT System are confronted with more and more attacks by an increase interconnections between IT systems. Therefore security-related processes belong to a very important process. Security is a complex non-functional requirement that can interaction of many parts in the system. But Security is considered in the final stages of development. Therefore, Their increases the potential for the final product to contain vulnerabilities. Accordingly, Early in development related to security analysis and design process is very important. J2EE gives a solution based on RBAC((Role Based Access Control) for security and object-relational database also has RBAC for security. But there is not a object-oriented analysis and design methodology using RBAC of J2EE and object-relational database for security. In this paper, the unified object-oriented analysis and design methodology is developed for security-critical web application systems based on J2EE and object-relational database. We used UMLsec and RBAC of object-relational database and J2EE for this methodology.

• Journal of KIISE:Software and Applications
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• v.28 no.8
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• pp.537-549
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• 2001

소프트웨어의 생산성과 유지보수 비용을 줄여줄 수 있는 기법으로 다양한 컴포넌트 기반의 개발 방법론이 제안되고 있다. 그러나 컴포넌트 기반의 시스템에서 재사용성과 독립성이 높은 컴포넌트의 식별은 가장 중요한 성공 요소 중의 하나임에도 불구하고, 대부분의 컴포넌트 기반 방법론들에서는 직관적이고 분석자의 경험에 의존적인 컴포넌트 식별 방법만을 제공하고 있을 따름이다. 본 논문에서는 분석 단계의 산출물인 시스템의 기능 모델 Use Case 모델과 자료 모델인 클래스 모델에 기반 하여 체계적인 컴포넌트 식별 기법과 지침들을 제안한다. 먼저 클래스에 대한 Use Case의 자료 접근값을 정의하고, 정의된 접근값을 기반으로 Use Case별로 접근되는 클래스의 가중치와 클래스별 동일 접근값을 가지는 Use Case들의 가중치를 계산하다. 두 가중치를 곱하여 최종적인 Use Case&클래스 가중치를 계산하여 후보 컴포넌트 식별의 기준으로 삼는다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.804-807
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• 2011

현재 인터넷 공격이 날로 증가하고 있는 추세이다. 더불어 그에 관련된 제품들도 많이 나오고 있는 상황이다. 그러나 정작 이런 제품들에 질적인 면에서 품질을 고려하는 노력이 미흡한 사실이다. 본 연구에서는 침입차단시스템(FW) 제품의 현황을 분석하고 효율성 품질평가 방법을 개발하고자 한다. 이를 위해 침입차단시스템 제품 유형을 대상으로 특성과 핵심 기술 요소를 분석하고 현황 조사 및 분석을 바탕으로 침입차단시스템 제품의 품질평가 기준과 평가방법론을 개발하였다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.585-588
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• 2003

This study attempts to develop a skeleton model to link construction schedule and 3D object for drawings in 4D system. Generally, the construction schedule and 3D object can be linked in 4D system by imported files which are made in specific S/Ws such as CAD S/W and scheduling S/W. Those methods have a difficulties for operating 4D data because extra work needs to link 4D data for each activity. This study develops a 4D model which the 4D data can be self-generated within the system. The suggested model can reduce the initial input data for new project by integrating schedule and 3D object in 4D system.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.485-488
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• 2000

인터넷을 통한 웹 기반 교수-학습시스템은 상호작용 중진을 통한 학습자 위주의 교육환경으로 지속적인 변화를 해왔고, 그 결과 학습자는 시간과 공간의 제약에서 벗어나 다양한 교육정보를 접할 수 있는 기회를 가지게 되었다. 본 논문에서는 교사를 대상으로 하는 원격교육 시스템에 한정하여 시스템개발에서 운영에 이르기까지의 모든 과정에 대한 경제적, 교육적 효율성 확보를 목적으로 하였다. 따라서 시스템 개발에서는 주요 모듈의 컴포넌트화를 시도하여 재사용성 증대를 통한 설계 기간 및 비용의 감소를 이끌어내어 개발의 효율성을 높이고, 교육학적 기반으로 구성주의 원리를 적용함으로써 교육의 효율성을 최대로 끌어올릴 수 있도록 설계하였다.

• Review of KIISC
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• v.26 no.3
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• pp.6-14
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• 2016

서버사이드 탐지 시스템은 온라인 게임보안 업계에서 필수와 표준이 되어가고 있다. 이에 따라서 탐지시스템의 실시간 대응능력을 더욱 높이고 탐지 룰을 시스템의 점검시간 없이 더욱더 다이나믹하게 조정할 수 있도록 효율성을 증가시키는 방법론과 시스템적 프로세스가 게임 개발사나 게임 서비스 제공자, 데이터 분석가들에게 요구되고 있다. 이 논문에서는 기존에 존재하던 서버사이드 탐지 시스템의 한계를 살펴보고, 이를 어떤 식으로 극복할 수 있을지 실제 게임에 반영한 사례를 통하여 새로운 구조와 디자인을 제안하였다.

• Journal of the Korea Society of Computer and Information
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• v.13 no.6
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• pp.95-105
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• 2008

Recently use of embedded software has been increased to different areas. The requirements and demands for the embedded software have also been altered. In the past, the embedded system was used in simple task and small portable devices but now, the usage of the embedded software has expanded to do much more complex and precise actions in a variety platform environment. The embedded software enables multiple softwares to be integrated into one and at the same time, control it. Currently the biggest challenges embedded software is facing during its development process is the improvement in product production and quality assurance. Our research team has developed an embedded software based on the component (technology or methodology) which both improves production capabilities as well as quality. Additionally, we also established and constructed a reliability test system which can effectively test the quality of the developed embedded software to further increase its competiveness.

• The KIPS Transactions:PartD
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• v.12D no.1 s.97
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• pp.13-20
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• 2005

The join operation is an important, fundamental operation in database systems, and it costs much to execute. In the literature, there are a number of technical attempts on development and evaluation of efficient join operations, all of which have been carried out In developers' perspective. This paper proposes a join operations benchmark that is dedicated to the evaluation of the join operations in database systems in users' perspective. This benchmark helps users select a database system that performs the join operations well in their work environment. The benchmark consists of 42 join queries, which are derived from on six performance factors that are picked out in two join categories. We have implemented this benchmark with two commercial database systems. The experimental results are also reported.

• Information Systems Review
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• v.10 no.3
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• pp.133-153
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• 2008

Understanding of the length of time required to realize the return on the investment of informatization is important for policy makers and decision makers of information system adoption. Previous researchers, however, assessed this issue with the performance measurement approach that was primarily based on static point of view. However, the static analysis on the outcome of the informatization investment is limited in measuring the priori and ex ante effects of the informatization implementation on temporal basis. This study present a methodology to capture the outcome of the informatization investment on dynamic basis. This assessment was performed based on an e-government project in Korea, called "Industry Human Resource Project." Particularly, the study addressed how long it takes to obtain the benefit of WorkNet System, which was part of this Korean e-government project. We proposed various approaches to illustrate the importance and temporal effect of the WorkNet System by analyzing DB data, time reduction of WorkNet business processes and return of investment of IT.