• 한국산업융합학회 논문집
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• 제25권6_2호
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• pp.1097-1102
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• 2022

With the continuous development of the current industry, the current global environment is in a very serious situation, with resource supply and demand dependent on imports and huge costs for waste disposal due to the depletion of resources and mass generation of industrial waste. Its limitations have already been revealed in many fields, and the importance of re-manufacturing is drawing attention as a countermeasure to these problems. Re-manufacturing aims to recover products that are in the aging and disposal stages, recover to performance close to new products, and re-commercialize them. Among them, most of the machine tools are made of materials such as steel and cast iron with large structures, and raw materials are widely used when producing new products. In addition, since a lot of carbon is generated due to production, it is an object that can obtain a great re-manufacturing effect. Planner millers belonging to large machine tools are one of the machine tool equipment that can greatly reduce resources and energy through re-manufacturing because the structure is very large and the casting is several to tens of tons. Through this machine tool, performance tests and results are derived on the development of re-manufacturing source technology and domestic servo motor and CNC control device.

• 한국문헌정보학회지
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• 제57권4호
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• pp.289-310
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• 2023

데이터 공유 및 재사용은 필수가 되었다. 데이터 리포지터리는 이러한 데이터 공유 및 재사용을 위한 핵심 도구이다. 본 연구의 목적은 국립생태원이 구축 및 운영 중인 EcoBank의 서비스를 제안하기 위함이다. 연구 목적을 달성하기 위하여 re3data.org에 등록된 생태 분야 해외 데이터 리포지터리 123개 중 10개를 선정하여 조사 및 분석하였다. 분석 결과 3가지 서비스가 공통으로 도출되었다. 3가지 서비스는 첫째, 연구데이터 정책, 둘째, 연구데이터 품질 검토 그리고 연구데이터 관리 교육 및 워크숍으로 구성된다. 여기에 EcoBank의 글로벌한 데이터 공유를 위해서는 re3data.org와 같은 데이터 리포지터리 레지스트리에 등록을 해야 하며 리포지터리의 신뢰성 및 품질 확보를 위한 인증을 추진할 것을 제안해 본다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권10호
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• pp.2862-2882
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• 2023

With the development of networking technology, it has become common to use various types of network services to replace physical ones. Among all such services, electronic voting is one example that tends to be popularized in many countries. However, due to certain concerns regarding information security, traditional paper voting mechanisms are still widely adopted in large-scale elections. This study utilizes blockchain technology to design a novel electronic voting mechanism. Relying on the transparency, decentralization, and verifiability of the blockchain, it becomes possible to remove the reliance on trusted third parties and also to enhance the level of trust of voters in the mechanism. Besides, the mechanism of blind signature with its complexity as difficult as solving an elliptic curve discrete logarithmic problem is adopted to strengthen the features related to the security of electronic voting. Last but not least, the mechanism of self-certification is incorporated to substitute the centralized certificate authority. Therefore, the voters can generate the public/private keys by themselves to mitigate the possible risks of impersonation by the certificate authority (i.e., a trusted third party). The BAN logic analysis and the investigation for several key security features are conducted to verify that such a design is sufficiently secure. Since it is expected to raise the level of trust of voters in electronic voting, extra costs for re-verifying the results due to distrust will therefore be reduced.

• 한국실내디자인학회논문집
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• 제24권4호
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• pp.111-123
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• 2015

This study aims to suggest 'an eco-friendly residential housing design guideline as an elderly housing alternative' by mixing the concept of a 'senior citizen community' housing environment with the concept of an 'eco-friendly' housing environment, based on the directivity of an elderly housing alternative for surviving in a super-aged society and the directivity of a sustainable housing environment for providing against global warming. Basically, this study considered the directivity of 'an eco-friendly residential building as an elderly housing alternative' by analyzing housing environment elements and elements to be considered in an elderly housing environment and setting the directivity of an elderly housing environment, which reflects the change in the design paradigm. In relation to the concept of universal design, for considering the perspective of elderly users, existing elements were compared and major planning elements were applied to the scope of complex planning, communal space and housing unit space. In relation to the concept of eco-friendly design, also, a guideline was re-organized and planning elements were applied to each category by comparing domestic and foreign green building certification systems. Based on domestic and foreign authorized guidelines of universal design and green building certification systems, this study was focused on suggesting an eco-friendly residential housing design guideline as an elderly housing alternative to make users perceive the need for a specific indoor environment design guideline and system.

• 한국환경교육학회지:환경교육
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• 제16권1호
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• pp.61-74
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• 2003

It is essential to develop legal and legislative devices like the National Environmental Act to conduct systematic and continuous environmental education. In many Countries including the Uinted States, Great Britain, Germany, and Australia, environmental education has been developing based on legal and legislative systems. Of those cases, the Uintes States made efforts to promote environmental education through legislation, which can have significant implications for us with intention to legislate the National Environmental Education Promotion Act. This study is focusing on our environmental education by studying the histiry and current situation of National Environmental Education Act, PL 91 516 of the United States and its features. In case of the United States, there has been several amendments and re-approvals. since the first National Environmental Education Act was legislated. The public hearing for the re-approval of National Environmental Education Act whIch was legislated in 1990 was held during the Summer of 2000. This gave us important reference data including the need of environmental education, its effects, and considering articles. As a result of the public hearing, 1990. National Environmental Education Act was recognized and some articles were amended. Its re-approved as John H Chafee Environmental Education Act of 2001, PL 107-S 876 IS Some implications and suggestions were drawn from the case study, which included the importance of related ministries, financial support, the role of Consulting Committee and Special Committee for environmental educators, environmental education program certification system.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.629-636
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• 2003

The purpose of this study is localization of safety relief valves for Nuclear Service through technical development with overall design, fabrication, inspection, capacity certification test and functional qualification test of safety relief valves in accordance with ASME Section III and KEPIC Code. Safety relief valve is the important equipment used to protect the pressure vessel, the steam generator and the other pressure facility from overpressure by discharging the operating medium when the pressure of system is reaching the design pressure of the system. But we're depending on technology of the other country up to the present time. Because we don‘ have our own technologies, we have been spent the great time and money on installing and repairing safety relief valve at nuclear power plant. Therefore we have to achieve the development of safety relief valves for Nuclear Service with our own technologies.

• 한국자동차공학회논문집
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• 제17권1호
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• pp.120-129
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• 2009

Remanufacturing is an industrial manufacturing process. The merits of remanufacturing are to reuse old products to perform like a new product and to save energy, natural resources, landfill space and to reduce air pollution by less re-smelting. This paper proposes a systemic approach for activating the domestic remanufacturing industry. The approach is based on inside and outside regulations to apply remanufacturing companies. And, we analyzed the state and problems of remanufacturing industry for automobile parts. Also 5 essential tactics and 20 detail strategies are suggested. On the basis of the approach, the domestic remanufacturing industry will carry out the cooperation for their competitions.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 추계학술대회논문집
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• pp.406-410
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• 2005

The wind turbine, Europe and the United States are different with the standards process each other when the manufacturing company which in order to demand the standards process to a construction in the multi country with interested parties of the corresponding nation to, always the re-agreement is difficult. Korean wind turbine also detail there is not a standard, when it produces and establishes of wind turbine, the problem point occurs. It is like that investigation of international standards system it leads and when it prepares the Acoustic noise measurement of the Wind Turbine Systems of Korea, it prepares the base for industrial development wind turbine of Korea.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2015년도 춘계학술발표대회
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• pp.522-525
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• 2015

"녹색건축 인증제도"는 건축물의 자재생산단계, 설계, 건설, 유지 관리, 폐기에 걸쳐 건축물의 전 과정에서 발생할 수 있는 에너지와 자원의 사용 및 오염물질 배출과 같은 환경 부담을 줄이고, 쾌적한 환경을 조성하기 위한 목적으로 건축물의 친환경성을 평가하여 인증하는 제도이다. 우리나라는 2002년부터 제도를 운영해오고 있지만 LCA를 기반으로 한 평가기준이 미비하고, 인증대상 확대에 따른 수요를 대처하기 어려운 구조이다. 따라서 본 논문에서는 G-SEED와 국외 인증제도의 비교분석을 통해 문제점을 도출하고, 이를 해결하기 위한 IoT 환경에서의 G-SEED : EB 시스템 설계를 목적으로 하였다.

• 융합보안논문지
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• 제17권3호
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• pp.65-71
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• 2017

'국가중요시설'이란 국방부훈령에 의하면 적에 의하여 점령 또는 파괴되거나 기능이 마비될 경우 국가안보 및 국민생활에 심대한 영향을 미치는 시설을 말하며, 원자력발전소 해킹사건, 정부청사 무단침입 사건 등을 볼 때 국가중요시설이 반사회적 범죄의 표적이 될 수 있음을 보여주었다. 그간 국가중요시설 점검은 시설조사에 국한되어 있어 본 연구에서 범용화된 요구사항을 개발하고자 하였다. 이에 국제표준화기구(ISO)의 품질경영시스템(ISO 9001:2015)과 정보보안관리시스템(ISO 27001:2013)의 요구사항을 비교한 결과, 1~10장 중 8장(운영)만 차이가 있고 나머지는 공통으로 사용하였다. 또한 국 내외 환경설계를 통한 범죄예방(CPTED)의 적용사례를 비교한 결과가 "6가지 적용원리" 범주 내에 있음을 확인하였다. 이를 통해 품질경영시스템 요구사항 중 8장에 CPTED의 적용원리를 도입하여 국가중요시설 관리시스템 인증 요구사항을 도출하였다.