• Korean Journal of Fisheries and Aquatic Sciences
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• v.7 no.2
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• pp.52-62
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• 1974

The fresh water prawn, Macrobrachium rosenbergi (De Maan) is a very common species in Info-pacific region inhabiting both fresh and brackish waters in low land areas, and especially abundant in the lower reaches of most rivers which are influenced by seawater, It is one of the largest and commercial species of genus Macrobrachium. As a place of the researches to clear the possibilities of transplantation and propagation of this species in the Far East region the larval development, growth, optimum temperature and metamorphose rate up to first post larvae in aquaruim are cleared under the conditions of salinity $6.58-7.05\%_{\circ}$ Cl, pH 8.0-8.2, the rate of flow 0.3 liter per minute and illumination 3000 lux. Temperature ranged from 27.5 to $28.7^{\circ}C$ during the period of earlier larval development. For the study oil the relationship between temperature and metamorphose rate from zoea to first post larvae, the temperatures in experimental tank were $22.2^{\circ}C\pm1$, $26.1^{\circ}C\pm0.85$, $28.1^{\circ}C\pm0.34$, $30.4^{\circ}C\pm0.66$, $33.7^{\circ}C\pm0.66$, $33.7^{\circ}C\pm0.38$ and $36.8^{\circ}C\pm0.26$. During the work, food used for the larvae was Artemia salina nauplius in the filter-circulation aquariums. This species metamorphosed to the first post-larvae through eleven zoea stages, and the characters of each larval stage are described and optimum temperature for metamorphosis rate and survivals to the first post larvae is $28.1^{\circ}C\pm0.34$.

• Proceedings of the Safety Management and Science Conference
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• 1999.11a
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• pp.469-479
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• 1999

Internet상의 전자문서, 전자거래 등과 관련된 전자업무에서는 다음과 같은 중요 인증 문제를 필요로 하게 한다. 첫째, 당사자(사용자)의 신분확인 기능(신원확인). 둘째, 전자업무 내용의 정보보호 및 무결성 기능(비밀성 보장). 셋째, 전자행위에 대한 부인봉쇄(분쟁해결) 등이 그것이다. 따라서 이러한 전자업무의 중요 인증 문제와 관련하여 신뢰할 만한 제3자, 즉 인증기관(CA : Certificate Authority)의 확인 및 증명해주는 제도가 필요하다. 위에서 언급한 제 가지 인증 문제 중 전자업무에서의 가장 기초적인 인증 문제인 당사자(사용자)의 신분확인 기능(신원확인)에 대한 문제를 연구하고자 한다.

• Electric Engineers Magazine
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• s.286
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• pp.19-23
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• 2006

IEC는 International Electrotechnical Commission(국제전기표준회의)의 약자로 전기관계의 국제 표준화를 목적으로 설립된 국제단체로서 각국을 대표하는 표준화 기관으로 구성되어 있다. IEC도 국제 표준화기구(ISO)와 마찬가지로 의결권을 갖는 회원은 1국가 1단체 또는 기관으로 국한되어 있다. 전문분야별로 기술위원회(TC), 분과위원회(SC),또는 작업그룹 (WG)을 설치하고 IEC 국제표준(IEC Publication)을 작성, 발표하여 각국에서 국가표준을 정할 때에 통일된 표준을 준거하도록 권고하고 있다. IEC 국제표준은 약 3,000건에 달하고 있다. IEC의 소재지는 제네바이고 비정부 기구이며 스위스 민법 제60조에 따른 사단 법인이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.435-438
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• 2004

전자 상거래에서 보안과 신뢰성을 보장하는 것은 매우 중요하다. 공개키 기반 구조에서는 인증서를 사용 함으로서 암호 및 인증기능을 제공하나, 신뢰성 있는 부인 방지 기능을 제공하기 위해서는 상위 기관의 인증기관이나 타임 스탬프 기능과 공증 기능을 위한 제 3의 신뢰성 있는 공증 기관이 필요하다. 본 논문에서는 전자공증의 기능과 필요성 및 동향에 대하여 소개한다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.598-602
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• 2017

Korea Aerospace Research Institute has been developing 3-stage launcher KSLV-II, which can inject 1.5-ton satellite into sun synchronous orbit (SSO). For development process, Test Launch Vehicle(TLV) adopting the $2^{nd}$ and $3^{rd}$ stage of KSLV-II will be scheduled to launch in 2018. The propulsion system of TLV is composed of $2^{nd}$ stage engine system (ground type) and propellant supply system including LOX, Kerosene tanks. Until now, system integration of engineering model of TLV and delivery of qualification model have been done. In this paper, the product assurance activities for propulsion system KSLV-II will be illustrated.

• Journal of Korean Society of Archives and Records Management
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• v.3 no.1
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• pp.159-184
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• 2003

In this research the issues of record management of national archives in Korea are classified into four categories: 1) improving the status of the Central Archives of Korea, 2) constructing a new national archives, 3) revising the law on the record management, 4) creating qualifications for a professional administrator for Archivist. 1) In order to strengthen the function of the Central Archives of Korea, it is very urgent to create a systematic mechanism in which the Central Archives oversees and administers public archives(documents) collected from all the public institutions not only under the Administration but also the legislature and the judicial authorities. 2) This paper suggests that a new National Archives should be a symbolic building representing Korea as archives. Considering the fact that Presidents archives will be a part of this new National Archives, it also suggests that artistic and decorative pieces which embody Korea's representative archives or people should be included in the building. The budget for these should be supplied by the government. 3) This paper looks at the matter of revising the law on Record Management in two respects: (1)strengthening the function of the Central Archives of Korea, (2)making it obligatory to produce archives not open to the public, or making a protection clause for secret archives. This paper proposes that the Central Archives of Korea will be able to collect all the public archives from all the public institutions, and to oversee and administer them by revising the 5th and 6th clauses of the current law on the record management. It also proposes that some laws which make it obligatory to produce archives for documents not open to the public, and which protect those secrecy. 4) Regarding the qualifications for a professional administrator for the record management, this paper suggests lowering the qualification a little to the bachelor's degree of the record management. Also it suggests taking into consideration the persons in charge of the record management in public institutions and acknowledging their qualifications after a certain period of training at the Central Archives of Korea or something like that. In addition, it classifies the ranks of the professional administrators according to their qualifications.

• Journal of the Korea Society of Computer and Information
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• v.14 no.12
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• pp.147-156
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• 2009

This paper proposes a SRTP key exchange scheme using split transfer of divided RSA public key in SIP-based VoIP environment without PKI. The existing schemes are hard to apply to real VoIP environment, because they require a PKI and certificates in the end devices. But in case of ZRTP. which is one of existing schemes, it's able to exchange SRTP Key securely without PKI, but it is inconvenient since it needs user's involvement. To solve these problems, the proposed scheme will split RSA public key and transmit them to SIP signaling secession and media secession respectively. It can defend effectively possible Man-in-The-Middle attacks, and it is also able to exchange the SRTP key without the user's involvement. Besides, it meets the requirements for security of SRTP key exchange. Therefore, it's easy to apply to real VoIP environment that is not available to construct PKL.

• Journal of the Economic Geographical Society of Korea
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• v.17 no.1
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• pp.69-85
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• 2014

The purpose of this study is to find the effects of triple helix model on the firm innovation, especially focused on the moderating effects of trust in Daegu Gyeongbuk. There are two ways of triple helix interactions in Korea. One is a traditional triple helix interaction in which entrepreneurial universities have a central role. As the other way, such 3rd-sector type organizations as technoparks have a important role in facilitating the triple helix interactions. We collected data from 231 firms located in the Daegu-Gyeongbuk region. According to the findings, firstly, 3rd-sector type organizations such as technoparks have a positive(+) effect on the firm innovation. But a traditional triple helix interaction has not. Secondly, a 3rd-sector type support has much more positive(+) effects on the firm innovation than a traditional triple helix interaction. Thirdly, the trust has a positive(+) moderating effect on the firm innovation in the two-type of the triple helix interactions. In the conclusion, research implication, limitation of this study, and future directions are suggested.

• The tire
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• s.83
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• pp.25-27
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• 1979

국연무역개발회의(UNCTAD)의 천연고무 제2회협정교섭회의는 작년11월에서 12월에 걸쳐 개최된 제 1회 협정교섭회의의 뒤를 이어 3월 27일부터 4월 12일 까지 58개국, 8국제기관이 참석하여 제네바에서 개최되었다. 동회의에서는 최종단계에서 협정내용의 주요골자인 완충재고규모, 자금준비, 기준가격수준 및 그 조정방법 등을 포함한 의장안이 제출되어 대강 그 합의를 보았다. <편집자주>

• Review of KIISC
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• v.8 no.3
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• pp.71-82
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• 1998

공개키 기반구조에서는 인증서를 사용 함으로서 기본적으로 암호 및 인증기능을 제공한다. 이와 더불어 신뢰성 있는 부인방지기능을 제공하기 위하여 사위등급의 보안기능을 가진 인증기관 혹은 제3의 신뢰성 있는 공증기관을 별도로 둠으로서 타임스탬프 기능과 공증기능을 부가하여 전자공증 서비스를 제공할 수 있다. 사용자의 요구에 따라 데이타 혹은 인증서에 대하여 타임스탬프를 발행하는 타임스탬프 발행당국(TSA)과 공증을 행하는 공증당국(NA)을 살펴보고, 현재까지 제안된 타임스탬프 및 공증 프로토콜에 대한 분석과 더불어 전자공증 서비스에 대한 국제동향을 검토, 분석한다.