• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.257-265
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• 2020

Parts obsolescence is a component type, in which raw materials or parts that make up a weapons system, are developed and produced according to demand, but they age due to changes in technology or market conditions. The weapon system equipment currently being used by the military is having difficulty in procurement, maintenance, and operation because of the obsolescence of parts. Parts obsolescence during the life cycle of a weapons system affects not only the combat readiness of the military but also the economic loss of material, parts, and equipment manufacturers and suppliers. On the other hand, advanced technology has reduced the life span of electronic components that make up the weapons system. In addition, because of the nature of the weapons system, the obsolescence of components takes decades from development to disposal, which has a serious adverse effect on equipment readiness and life cycle costs. Therefore, it is necessary to manage systematically the parts obsolescence from development until the disposal of the weapons system equipment. This study examined the system of component control in developed countries to present a proper management plan for local situations and propose development plans for the early settlement of component control.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.6
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• pp.1143-1152
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• 2012

We established a top-down methodology to estimate carbon footprint as national mean value (reference) with the statistical data on agri-livestock incomes in 2007. We also established LCI (life cycle inventory) DB by a bottom-up methodology with the data obtained from interview with farmers from 4 large-scale farms at Gunsan, Jeollabuk-do province to estimate carbon footprint in 2011. This study was carried out to compare top-down methodology and bottom-up methodology in performing LCA (life cycle assessment) to analyze the difference in GHGs (greenhouse gases) emission and carbon footprint under conventional rice cultivation system. Results of LCI analysis showed that most of $CO_2$ was emitted during fertilizer production and rice cultivation, whereas $CH_4$ and $N_2O$ were mostly emitted during rice cultivation. The carbon footprints on conventional rice production system were 2.39E+00 kg $CO_2$-eq. $kg^{-1}$ by top-down methodology, whereas 1.04E+00 kg $CO_2$-eq. $kg^{-1}$ by bottom-up methodology. The amount of agro-materials input during the entire rice cultivation for the two methodologies was similar. The amount of agro-materials input for the bottom-up methodology was sometimes greater than that for top-down methodology. While carbon footprint by the bottom-up methodology was smaller than that by the top-down methodology due to higher yield per cropping season by the bottom-up methodology. Under the conventional rice production system, fertilizer production showed the highest contribution to the environmental impacts on most categories except GWP (global warming potential) category. Rice cultivation was the highest contribution to the environmental impacts on GWP category under the conventional rice production system. The main factors of carbon footprints under the conventional rice production system were $CH_4$ emission from rice paddy field, the amount of fertilizer input and rice yield. Results of this study will be used for establishing baseline data for estimating carbon footprint from 'low carbon certification pilot project' as well as for developing farming methods of reducing $CO_2$ emission from rice paddy fields.

• Journal of the Economic Geographical Society of Korea
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• v.14 no.4
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• pp.506-523
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• 2011

Since the 1990s, the handmade shoes industrial agglomeration district has formed in the city center, Hyangchon-dong, Jung-gu in Daegu. This paper aims to examine the formation process, to analyze the viability, and to propose policy implications of manufacturing industrial districts in a city center through studying this industrial district. The district's creation began as the result of the dissolution of local production and marketing system of handmade shoes in the 1980s, the excellent accessibility of the location and an inexpensive rent. The district's core viability lies in the external economies derived from local networks through social divisions of labor of production and marketing systems. Because of the lack of organizers of the social division of labor and 'integrated production system done by single business', the effect of external economies created by the social division of labor is limited. To get over this limitation, the district should to be restructured into a 'cultural street of leather crafts' as a part of 'making modern historical and cultural belt' programs within Daegu downtown regeneration policies. To support the restructuring, public assistant measures such as the establishment of a corporate services center should be strengthened.

• Korean journal of communication and information
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• v.36
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• pp.198-230
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• 2006

The aim of the this study is to observer paradoxal phenomenon in media election. The media, especially Television, was traditionally a journalistic operation representing political events on the outside of political camp. But recently, it intervenes to 'the political camp' as the most important method for election campaign. A centripetal of electronic medias making the dominant political space offer an alternative plan which get over the modern crisis of representative democracy. Even though, to the production of the political symbol and the operation of symbol which constitute substantial system of political action, the human being subject is excluded and the technical system of communication make up a govern structure. So it makes the contradictory situation. TV broadcast for election campaigning show well this paradoxal situation. The institutionalization of electoral broadcasting oriented by the State strengthens an immensification, an economical and political efficiency and a transparency of electoral campaign. But the means which controls the mind of public is also strengthened. It relates the production and circulation of the political symbol and the symbolic image restricted by dominator. In conclusion, this study argues that the media election is institutionalized by the instrumental reason(procedural rationality of politics and technological rationality of broadcasting), therefore the candidate take a fragment roles for the production of transcendental political symbol and the voters accommodate to the symbolic images which are foreseen and they judge.

• Proceedings of the Korean Society for Information Management Conference
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• 2002.08a
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• pp.81-87
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• 2002

본 고에서는 국내 대학에서 생산되고 있는 학위논문의 원문 구축에 대한 중복투자를 방지하고 학위논문의 생산, 관리, 유통을 전자적으로 관리하기 위한 모형을 제시하고자 한다. 이를 위하여 Verginia Tech에서 주도하는 NDLTD(Networked Digital Library of Thesis and Dissertations) 사례를 참고하여 전자적 논문제출을 위한 ETD의 표준화를 제안하였으며, 학위논문에 디지털 콘텐츠 서비스 식별체계인 DOI를 부여하고 DOI와 메타데이터를 통합관리하기 위한 방안을 기술하였다.

• Monthly Duck's Village
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• s.64
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• pp.68-74
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• 2008

친환경인증제도란 환경에 농산물(예: 농약을 사용하지 않은 유기농산물), 친환경건축자재, 친환경건축물 등등 다양한 분야에 적용되는 인증제도입니다. 농약의 환경보전 기능을 증대시키고, 농업으로 인한 환경오염을 줄임으로 일반농산물을 친환경농산물로 허위 또는 둔갑표시하는 것으로부터 생산자.소비자를 보호하기 위해 유통과정에서의 신뢰구축으로 친환경농산물 생산과 공급체계를 확립하기 위한 것입니다. 그 동안 증산위주의 고투입농법에 의존해 온 결과 농업환경이 약화되어 지속가능한 농업생산을 위협하고 지나친 농약사용은 토양미생물, 천적감소 등 생태계 교란, 수질오염 및 농산물의 농약잔류문제를 야기하는 등 관련 국제규범이 제정됨으로써 환경보전 및 식품안전에 대한 국민의 관심제고에 적극적인 대응 필요에 만들어 졌습니다.

• 한국공간정보시스템학회:학술대회논문집
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• 2005.05a
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• pp.59-63
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• 2005

일부 지형지물에 대한 기본지리정보의 생산과 향후 생산될 다양한 지형지물에 대한 기본 지리정보 구축은 국가지리정보체계(NGIS)사업에서 기 구축된 수치지형도의 구조화 및 체계화의 결과라고 할 수 있다. 본 연구에서는 향후 다양한 분야에 사용될 기본지리정보(Framework Data)의 내용을 분석하고, 기본지리정보의 갱신에 있어서, UFID프로세스를 이용한 보다 신속 정확한 기본지리정보의 갱신방안에 대하여 연구하였다.

• Proceedings of the Korea Database Society Conference
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• 1999.06a
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• pp.487-495
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• 1999

본 논문은 Zachman ＆ Soho ［8］의 확장 정보 System 체계(extended lnformation System Architecture)의 개념을 ARIS Tool을 이용하여 구현한 Case study이다. 본 논문의 특징은 전략, Process, 조직,Data, Network, Time의 6 개 Model의 연계구조와 각 Model의 계층적 관계를 인도의 대표적 기업 중 하나인 TATA 제철소 냉연 공장의 신규 생산관리 System 구축사례를 통하여 제시하였다는데 있다.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2004.06a
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• pp.434-434
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• 2004

하나로에서 생산되는 방사성 동위원소를 생산단계에서 소비단계까지의 유통체계를 확립하기 위해서는 방사성동위원소를 안전하게 운반하기 위한 운반용기를 개발하여야 한다. 따라서, 원자력연구소에서는 Ir-192 110 ci용 밀봉선원 조사기를 개발하고 있다. 이 조사기는 국내ㆍ외 방사성물질 운반용기관련 법규의 운반용기 분류기준에 의하면 B형 운반용기로 분류된다. B형 운반용기는 관련법규에서 규정하고 있는 $800^{\circ}C$ 열 조건에서 30분 이상 동안 견딜 수 있는 능력을 갖추어야 한다.(중략)

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2013.05a
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• pp.759-760
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• 2013