• Journal of the Korean Geographical Society
• /
• v.50 no.1
• /
• pp.105-122
• /
• 2015

Military geography has been recognized a part of applied geography appeared in 1960s by the viewpoint applying geographical science technology and knowledge for war. But the contribution for war accompanying violence caused negative recognition in moral viewpoint and led stagnation of military geography's study. Therefore this paper has researched a method improving the role of military geography as a part of applied geography and considered the essential meaning of the military geography's role in the relationship between war and military sciences. Based on this consideration, this paper proposed a research direction necessary for the role contributing human development beyond the viewpoint focusing contribution for war. The result of this study confirmed the characters of the military geography's elements have two attributes contributing for war victory or improving human life quality. Military geography has laid emphasis for usability to war contribution until now and caused unsatisfactoriness of morality. But military geography can complement this unsatisfactoriness by the extension of the role contributing human life quality. This study could examine the possibility doing the role contributing for both war and peace as a intact science.

• Proceedings of the Korean Information Science Society Conference
• /
• 1999.10c
• /
• pp.664-666
• /
• 1999

Mobile IP 기술에 의해 시간 및 장소의 제한을 받지 않고 사용자가 원격지 또는 이동 중에도 정보를 처리할 수 있는 환경이 제공된다. 패킷 필터링 기술 같은 경우에는 패킷의 출발지, 목적지 주소뿐만 아니라 패킷의 이동 방향도 고려하므로 Mobile IP의 동작이 방해를 받게 될 수가 있다. 이러한 문제점을 해결하기 위해 나온 것이 역 터널링 기법인데 이 경우는 효율성이 떨어지므로 상황에 따라 역 터널링을 수행하는 선택적 역터널링 기법에 나오게 되었다. 효율성을 증진시킨 선택적 역 터널링 기법은 외부 네트워크의 보안 정책에 위배되는 패킷 전송이 이루어질 수도 있으므로 새로운 보안 정책이 절실히 요구된다. 본 논문에서는 선택적 역 터널링시 외부 에이전트가 패킷 필터링 기능을 갖는 기법에 대해 제안한다. 이 기법을 적용함으로써 이동노드가 선택적 역 터널링시 외부 네트워크의 보안 정책에 부합되게 행동할 수 있도록 하였다.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
• /
• v.7 no.1
• /
• pp.63-72
• /
• 2009

Recently the importance and interest for the microbes has been increased because several important results for the effects of microbes on the radioactive waste disposal have been published continuously. In this study, research status and major results on the various roles and effects of microbes in the radioactive waste disposal have been investigated. We investigated and summarized the roles and major results of microbes in a multi-barrier system consisting of an engineered barrier and a natural barrier which is considered in radioactive waste disposal systems. For the engineered barrier, we discussed about the effects of microbes on the corrosion of a waste container and investigated the survival possibility and roles of microbes in a compacted bentonite buffer. For the natural barrier, the roles of microbes present in groundwaters and rocks were discussed and summarized with major results from natural analogue studies. Furthermore, we investigated and summarized the roles and various interactions processes of microbes and their effects on the radionuclide migration and retardation including recent research status. Therefore, it is expected that the effects and roles of microbes on the radioactive waste disposal can be rigorously evaluated if further researches are carried out for a long-term behavior of the disposal system in the deep geological environments and for the effects of microbes on the radionuclide migration through geological media.

• Journal of Korea Port Economic Association
• /
• v.32 no.2
• /
• pp.105-122
• /
• 2016

Numerous studies have evaluated the status of seaports. However, the majority of the research has approached this topic from the view-point of port capabilities, including locational advantage, infrastructure, productivity, and competitiveness. The position and/or role of a port can be understood more precisely and comprehensively by considering the interconnectivity among ports making up enormous global transportation networks. The main objective of this study is to compare the status of 82 container ports on the trunk shipping routes between Asia and Europe by applying the concepts of structural equivalence and role equivalence proposed by the social network analysis method. Network similarities and differences among competing ports in the regions are assessed by analysing their structural equivalence. Furthermore, the hierarchical structures of the ports located on the trunks between Asia and Northwest Europe and between Asia and the Mediterranean are constructed by evaluating their role equivalence. The results of this empirical research shows that Singapore and Rotterdam possess the most significant positions on the ocean corridors between Asia and Northwest Europe. Singapore also holds a leading position on the Asia-Mediterranean shipping route. Lastly, no ports located in the Middle East or Mediterranean regions have an equivalent weight to those of Rotterdam, Hamburg, Antwerp on the Asia-Northwest Europe route.

• Journal of the KSME
• /
• v.50 no.10
• /
• pp.43-45
• /
• 2010

이 글에서는 자동차의 내구신뢰성 향상을 위해 부품 제조기업에서 수행하는 내구신뢰성 관리기법 및 실행방법에 대해서 설명하고자 한다.

• Proceedings of the Korean Radioactive Waste Society Conference
• /
• 2009.06a
• /
• pp.163-164
• /
• 2009

• The Science & Technology
• /
• v.30 no.2 s.333
• /
• pp.18-19
• /
• 1997

고도산업사회에서 전문가의 역할은 절대적이며 그 사회의 주체가 되어야 한다. 기술자는 자긍심을 갖고 현실에 참여해야 하며 협력하는 사회의 기초적인 역할을 감당해야 한다. 협력의 기초는 정직성과 근면성 그리고 신뢰성이라 할 수 있다.

• Proceedings of the Korean Radioactive Waste Society Conference
• /
• 2012.10a
• /
• pp.379-380
• /
• 2012

• Journal of Internet Computing and Services
• /
• v.6 no.5
• /
• pp.1-9
• /
• 2005

In a role based access control through attribute certificate, the use of role assignment certificates and role specification certificates can reduce management cost and the overhead incurred by changing roles, Highly distributed computing environments such as ubiquitous computing environments not having global or broad control. need another attribute certificate management technique, Actually just having role specification certificate separately reduce management cost, But for better performance we structure role specification, We group roles and make the role group relation tree, It results secure and efficient role renewing and distribution, For scalable role specification certificate distribution, the multicasting of packets is used, We take into account the packet lass and quantify performance enhancements of structuring role specification certificates.

• International Journal of Highway Engineering
• /
• v.11 no.2
• /
• pp.133-139
• /
• 2009

Joints on concrete road prevent failure and crack securing the moderate space when concrete slab expands and contracts as a function of varying temperature throughout all seasons. Filling joint sealants in joints can prevent the interruption of slab movement and failure due to the infiltration of alien substances, and also can prevent crack caused by freezing and thawing and Dowel bar corrosion resulted from water - rainfall and snowfall infiltration through the inside the pavement. They lead to the improvement of the commonality of road. This paper evaluates physical strength, weatherability and deicer resistance of a two-year aged sample from joint on concrete road and its virgin sample. It was found that there are significant differences in aspects of weatherability and adhesive force between the tested sample and silicon materials.