• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.2
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• pp.221-226
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• 2018

Open source software allows revising and adding a new idea on them as well as debugging themselves. The open source software can be utilized as various educational programs as well as development of a commercial software products using them. MIT App Inventor, one of the block-based visual programming environments for education, supports building a local server and even revision of the platform itself by providing its own source codes. In this paper we implement App Inventor open sources on the local server. Especially we present how to revise and implement a new App Inventor platform reflecting their own requirements in schools or educational institutes and how to build a local server operating the revised App Inventor platform. They can provide more interactive educational environments to students and improve educational satisfaction through the active customizing of the platform itself such as adding new programming block components requested by students.

• Review of KIISC
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• v.32 no.5
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• pp.35-43
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• 2022

혁신적인 소프트웨어 개발을 위해, 소프트웨어 개발 환경에서 오픈소스 소프트웨어(OSS)를 활용하는 것은 하나의 개발 트렌드로 자리매김했다. 이러한 이점에도 불구하고, 적절한 관리가 이루어지지 않는 OSS 재사용은 취약점의 전파 문제나, 공급망 공격과 같은 위험한 보안 위협을 초래한다. 본 고에서는 OSS 재사용으로 인해 야기되는 다양한 보안 위협을 해결하기 위한 최근 연구들의 동향을 소개하고, 이런 연구들에 기반하여 제작된, OSS 보안성 향상을 위한 기술들을 소개한다.

• Journal of Cadastre & Land InformatiX
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• v.48 no.1
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• pp.187-199
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• 2018

The purpose of this study is to propose an open source GIS software business model for the revitalization of Korean open source GIS software industry. In this study, we categorized the types of open source software business models and developed an open source software business strategy suitable for GIS companies in Korea. To propose a business model, we applied the business model canvas which is often used in the area of business studies to analyze new business models. We tried to develop the open source GIS business model through both interviews and case studies with Korean open source GIS software companies. We propose three different types of open source GIS software business models such as distributor model, producer model, and 3rd party service provider model as follows: first, the companies which belong to distributor model can carry out business by providing professional services in the market of open source software. Second, the companies which belong to producer model can sell their products to the global market as well as the domestic market. Lastly, given the growing interest in domestic open source software, the number of third-party service providers is likely to continue to increase in the future. Therefore, it is expected that the companies which belong to the third party service provider model will be able to develop various business models by securing the technology.

• Journal of Korean Society for Geospatial Information Science
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• v.17 no.4
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• pp.3-11
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• 2009

Open source is recently much more made and distributed by on-line such as internet in various fields. Therefore, end users could rapidly develop applications needed for some purposes using minimal efforts if use open sources. But, open source must be customized for their purposes. In this paper, we developed software for coordinates conversion and compared the software with NGI Pro which is developed by National Geographic Information Institute. Consequently, it is possible for us to easily develop the coordinates conversion module and we know that the use of open source is effective to develop various applications.

• KIISE Transactions on Computing Practices
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• v.20 no.12
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• pp.658-663
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• 2014

Due to the rapid development of open source based Cloud management platforms such as OpenStack, many and various individuals and institutions are trying to construct Cloud computing systems based on open source software projects. It is essential, for those who install, administrate or operate a Cloud, to validate the integrity of the constructed Cloud system. This paper, therefore, proposes the design of a testing tool for validating the integrity of a constructed OpenStack-based Cloud system. Especially, the proposed testing tool utilizes the Tempest project which is an open source project that consists of OpenStack test cases. The proposed testing tool is expected to help developing Cloud technology and Cloud users.

• Journal of Software Assessment and Valuation
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• v.13 no.2
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• pp.9-17
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• 2017

Software compliance is an essential process when Open Source Software is included in software development to avoid such as license violation issue. However, analyzing quite big software which involves many developers requires enormous time and hard difficulty. To resolve these kinds of problem, SPDX formalizes and standardize the metadata about the software package. When the use of SPDX is activated, software package analysis would be simple and could contribute fair Open Source Software distribution. In this paper, we develop blockchain based SPDX distribution platform which fulfills the requirement of SPDX lifecycle to provide SPDX database which does not depend on particular centralized service but serve as distributed ledger and control by user's certification and their purpose. Moreover, to contribute invigoration of blockchain based SPDX distribution platform, we develop SPDX document generation plug-in for integrated development environment such as Visual Studio.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.617-619
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• 2015

최근 IT 제품의 활용의 증가와 함께 소프트웨어는 컴퓨터를 넘어 적용 범위가 더욱 넓어지고 그에 따른 수요 또한 급격히 성장하고 있다. 또한 상용 소프트웨어와 더불어 오픈소스 소프트웨어(Open Source Software)의 수요도 함께 급성장하고 있다. 하지만 오픈소스 소프트웨어는 보안에 대한 전문지식이 없는 개발자에 의해 개발이 이루어진다. 이에 하트블리드(HeartBleed), 쉘쇼크(ShellShock)와 같은 다양한 보안취약점(Security Vulnerabilities)이 발생하고 있으며 공격으로 이어지는 사례도 늘고 있다. 따라서 본 논문에서는 다른 소프트웨어 점검 도구들과 연계하여 발견된 보안취약점이 익스플로잇터블(Exploitable)한 지 검증하는 엔진을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.339-342
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• 2008

최근 기업들은 소프트웨어의 품질, 개발 속도, 비용 등의 문제에 대한 해결을 위해서 오픈소스 소프트웨어를 활용한 개발 방법을 사용하고 있다. 이에 따라 OSS를 비롯한 오픈소스에 대한 여러 분석이 있었지만, OSS를 활용할 때 이에 따른 비용이 줄어들 것이다라는 예상은 많았지만, 그것을 실제로 증명할 만한 사례나 연구는 현재까지 많이 존재하지 않았다. 본 연구에서는 OSS를 활용하기 위한 비용요소 및 범위를 제시하고 실제 사례를 통해서 각 비용을 구해서 이에 대한 적절성 및 분석을 수행하고 향후 연구를 제시한다.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06a
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• pp.259-261
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• 2012

클라우드 컴퓨팅은 정보가 인터넷 상의 서버에 영구적으로 저장되고 데스크탑이나 테이블 컴퓨터, 노트북, 벽걸이 컴퓨터, 휴대용 기기 등과 같은 클라이언트에는 일시적으로 보관되는 패러다임을 뜻한다. 가용성과 사용상의 편의에 대한 요구의 증가로 최근들어 빠른 속도로 발전하는 모습을 보이고 있다. 클라우드 컴퓨팅은 제공하는 서비스의 유형에 따라 IaaS(Infrastructure as a Service), PaaS(Platform as a Service), SaaS(Software as a Service)로 나뉜다. 이 중 IaaS는 인프라를 서비스로 제공하는 모델이다. 이를 구현한 오픈소스 클라우드 플랫폼으로 오픈스택과 클라우드 스택이 대표적이다. 시트릭스는 자사가 개발중인 클라우드 플랫폼인 클라우드스택을 아파치 라이센스로 전환하겠다고 발표했다. 이전까지 같은 종류의 클라우드 플랫폼인 오픈스택의 회원사로 참여하고 있던 시트릭스가 오픈스택 그룹에서 탈퇴하고 클라우드스택을 지원한다는 발표는 큰 관심을 받았다. 본 논문에서는 여러 오픈소스 클라우드 플랫폼 중 오픈스택과 클라우드스택을 비교해보고, 이를 통해 향후 오픈소스 클라우드 플랫폼의 발전가능성에 대해 고찰해보고자 한다.

• Journal of Korean Society for Geospatial Information Science
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• v.17 no.4
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• pp.67-74
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• 2009

The 'Open Source' of programing is a method that is not only sharing the source, but also making the S/W by the low cost and easy way. In this study, we made the urban facilities management system(FMS) based on the GeoFOSS of Open Source. This system has the GIS function of the urban facilities management, the u-GIS function using the USN for processing the spatial information. Also, as we use the GeoFOSS of 'Open Source', we can have received many benefits. First, this system has the economic impact, because it is not necessary to buy the commercial GIS software. Second, this system can make most functions of the GIS, the performance does not bad compared to other products. Also, this system strictly conforms to the international standards, it is easy to get a repair, maintenance and interoperability.