• 한국태양에너지학회:학술대회논문집
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• 2011.04a
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• pp.263-268
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• 2011

Presently, various building certification systems are being enforced in Korea. However, people are in confusion and have an aptitude to waste time and money because these certification systems for buildings have very similar criteria. After investigating the foreign certification systems and domestic certification systems for the building, it is required that some of similar building certification systems are integrated.

• International Journal of Aerospace System Engineering
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• v.10 no.1
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• pp.14-24
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• 2023

The materials applied to the aircraft fuselage, parts, and components must be verified by relative authorities in accordance with the procedures set by the airworthiness authority to achieve the aircraft type certification. There are no examples of domestic composite materials which were verified in order to be applied to aircraft structure. In this study, the composite material certification system of NCAMP, an American composite material standard certification organization, was reviewed and used as the fundamentals of the first aerospace composite material certification system in ROK(Fig 2,8). Also updated material certification documents were developed and confirmed by material certification engineers and inspectors. This aerospace composite material qualification system is intended to modernize the material certification system for AAM(Advanced Air Mobility) as well as aircraft and to enhance the understanding of related technicians and inspectors.

• Journal of Aerospace System Engineering
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• v.1 no.2
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• pp.13-20
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• 2007

Structural qualification plan (SQP) for aerospace vehicle is based on material certification methodology, which must be approved by certification authority. It is internationally required to use of statistically based material allowables to design aerospace vehicles with aerospace materials. In order to comply with this regulation, it is necessary to establish relatively large amount of database, which increases test costs and time. Recently NASA/FAA develop the new methodology which results in cost, time, and risk reduction, and satisfies the regulation at the same time. This paper summarizes the certification methodology of materials system as a part of structural qualification plan (SQP) of aerospace vehicles and also thermal management of the vehicle system, like thermal protection materials system and thermally conductive material system. Materials design allowable was determined using this method for a carbon/epoxy composite material.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.32 no.2
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• pp.104-111
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• 2009

Recently, it is becoming the big issue internationally where the safety problem of the industrial product including the foodstuffs. The way is able to construct the trust of the consumer that the external specialized agency independently operating confirms what production process of the product keep a standard or a technical regulation. This is conformity assessment. In the many countries, agencies entrusted government authority do conformity assessment. Specially, 'certification' in one form of conformity assessment process is operating a certification system at the government and the non-government body in Korea. Also non-government certification is fixed by trusted system from consumer. He has to prepare a competitive power in liberalization time, so need the countermeasure urgently. This study purpose that develops strategy so as to activating of non-government certification system in gist of the origination called 'self-control.' I present activation strategies using SWOT/AHP analysis.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.23
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• pp.291-320
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• 2004

Electronic transaction using electronic documents be carried without direct person to person meeting, there is the possibility to use other's identity illegally without notice and to verity authenticity of transaction. It is very hard to find out that the electronic documents on the process of submitting is forged documents or not and also has much difficulty in maintaining transmitting secret. Therefore, to solve such problems on electronic transactions, certification system with cryptography skill are inevitably necessary. Also there is needed legal base in the electronic document as functional equivalent of the paper document. Recently there are so many commercial certification service provider(CPS) such as Identrus, Bolero, TEDI but their establishment of CPS, certification process, guideline and so on are different each CPS. Therefore, this kind of situation can make user confuse. To introduce and develop the electronic certification in the international electronic commerce not domestic electronic commerce, it need to authorize and operate certification authority under the uniform regulation base. But, because the laws and guidelines that related to electronic certification system are different among the nations and international organizations, it need to compare laws and guidelines. In conclusion, the most important thing to resolve problems surrounded certification and develope certification system in the international electronic commerce make uniform rule of international electronic certification to recognize internationally from each nation or at least, need to harmony laws and guideline in each nations.

• Journal of Aerospace System Engineering
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• v.1 no.3
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• pp.21-25
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• 2007

This is a study on the establishment of airworthiness certification system fitted for korean military aircraft acquisition and export. Based on the investigation of US civil & military airworthiness system and analysis of the real state of domestic military aircraft acquisition, this paper offers some ideas that can be helpful to establish laws and organizations to certify airworthiness. Particularly this paper suggests that the best way to build airworthiness certification laws/guidelines and technical criteria, the optimal organizational structure which is decentralized by dividing administrative certification authority and technical research center.

• Journal of the Korean Solar Energy Society
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• v.31 no.6
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• pp.125-131
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• 2011

Recently, the application of renewable energy to building is steadily increasing in domestic due to the energy saving efforts around the world. Among the all, wind energy is one of the rising energy source because of its high technological maturity. Domestic wind power market has rapidly increased in recent years but the certification system for wind turbine has not been activated since it was introduced in 2009. Thus, this study aims to propose the improvement of certification system for wind turbine by comparing domestic certification system with international certification system. The result of this study are as follows. First, domestic certification system needs to be subdivided and established by systematic standards. Second, it is considered that education about rating standards is required to wind turbine makers to activate domestic certification system. Third, domestic certification agenciesand test agencies need to be unified and reduced.

• Journal of Aerospace System Engineering
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• v.9 no.3
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• pp.47-58
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• 2015

An aircraft, its engine and propeller are certified in processes of design, production, and operation respectively. Type Certificate is issued if the aviation authority finds that the design of aircraft, engine, or propeller complies with applicable airworthiness standards and environmental standards. The ICAO (International Civil Aviation Organization) prescribes the international standards and recommended practices of type certification for the contracting states. The FAA (Federal Aviation Administration) and the EASA (European Aviation Safety Agency) established their regulations and procedures applicable to type certification. In this paper, we compared the differences among the ICAO, the FAA, and the EASA regulations, and on this comparison, we proposed the rulemaking items to improve type certification regulations in Korea.

• Journal of Arbitration Studies
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• v.9 no.1
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• pp.367-390
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• 1999

The basic requirements for conducting electronic commerce include confidentiality, integrity, authentication and authorization. Cryptographic algorithms, make possible use of powerful authentication and encryption methods. Cryptographic techniques offer essential types of services for electronic commerce : authentication, non-repudiation. The oldest form of key-based cryptography is called secret-key or symmetric encryption. Public-key systems offer some advantages. The public key pair can be rapidly distributed. We don't have to send a copy of your public key to all the respondents. Fast cryptographic algorithms for generating message digests are known as one-way hash function. In order to use public-key cryptography, we need to generate a public key and a private key. We could use e-mail to send public key to all the correspondents. A better, trusted way of distributing public keys is to use a certification authority. A certification authority will accept our public key, along with some proof of identity, and serve as a repository of digital certificates. The digital certificate acts like an electronic driver's license. The Korea government is trying to set up the Public Key Infrastructure for certificate authorities. Both governments and the international business community must involve archiving keys with trusted third parties within a key management infrastructure. The archived keys would be managed, secured by governments under due process of law and strict accountability. It is important that all the nations continue efforts to develop an escrowed key in frastructure based on voluntary use and international standards and agreements.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 1997.11a
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• pp.289-299
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• 1997

인터넷의 기술은 인트라넷(Intranet), 익스트라넷(Extranet)이라는 이름으로 인터넷 기술을 활용한 기업 내 또는 기업간 네트워크 구성에 관한 연구들이 활발하게 진행되고 있다. 인터넷의 개방성으로 인해서 인터넷은 보안성이 떨어지는 문제점을 가진다. 이를 극복하기 위해서 최근 많은 암호기반 보안 기술들이 개발되고 있다 대부분의 암호기반 보안 기술들은 전체네트워크 객체의 증명을 책임지는 공증 기관을 필요로 하는데, 이를 공중 사무소(Certification Authority)라 한다. 본 논문에서는 인터넷과 인트라넷의 취약한 부분을 보완하기 위한 최근의 암호기반 보안 기술과 그들 간의 상관관계를 파악한다 보안의 기초인 공증사무소의 구조 및 역할을 조사하고, 실제로 공증 사무소를 운영하기 위한 점검 사항 및 운영 규칙 등을 제시한다. 또한, 공증 사무소에 필요한 소프트웨어를 구현한다.