• 산업경영시스템학회지
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• 제15권25호
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• pp.63-74
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• 1992

This study proposes D- shortage control system which is a convenient tool for cooperative companies to reduce shortages which frequently break out between the manufacturing companies and the cooperative companies. On the ground of theoretical analysis of MRP and JIT system, D- shortage control system sets up a schedule that secures the delivery date by precedent scheduling( D-) comparing with MRP It also syncronizes business, production and release, and builds the pull system comparing with JIT. The factors causing shotages are the scheduling absurdity and the controlling absurdity. The scheduling absurdity can be settled by the calculating required quantity method of MRP and the controlling absurdity can be settled by daily control of business, production and pruchasing fuctions by the pull system of JIT. And the inventory and the WIP can be reduced by the operating of PULL system and by the settlement of D- shortage control practices. The Application of D- shortage control system, therefore, enables the rationalization of logistics and reduces the inventory And it leads to the reinforced competitiveness and the security of subsistence of manufacturer by the cost ruduction, the reduction of financial difficulty, and the insurance of the delivery date.

• Journal of Contemporary Eastern Asia
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• 제19권2호
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• pp.61-83
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• 2020

From 1959 to 1984, over 93,000 Koreans moved to North Korea from Japan as part of a repatriation project conducted during this time. Among them were people who had escaped from North Korea and immigrated to Japan and South Korea as well as the descendants of such people. This research examines the immigration trajectories of North Korean defectors related to the repatriation project and its effects on international relations in East Asia in a migration systems context. Specifically, it focuses on 26 North Korean defectors who have connections with Japan and settled in Japan and South Korea. It argues that the migration pathways of North Korean defectors linked with the repatriation project have been constructed with the cooperation of and amidst conflict between East Asian countries. To respond to the situation, North Korean defectors used their connections with Japan in amicable relations between Japan and China. However, after the relations went sour, defectors turned to informal transitional networks. If these strategies were unavailable, the defectors faced difficulties, unless they received social or capital support from the destination countries. After entering the destination country, those who settled in Japan have experienced different situations due to the inconsistency in administrative proceedings, while those in South Korea have been treated equally as other defectors. In this sense, some defectors have faced precarious situations in their immigration.

• 미생물학회지
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• 제48권2호
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• pp.134-140
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• 2012

황사는 중국과 몽골의 사막지역과 중국 황하 중 상류의 황토지대에서 바람에 의해 대기 중에 부유한 미세먼지가 상층 바람을 타고 멀리까지 날아가는 기상 현상을 말한다. 황사 먼지는 bioaerosol을 포함하며 미생물의 운반체로 작용할 수 있다. 따라서 본 연구에서는 황사 발생 기간과 황사가 없는 기간 동안 각각 포집한 낙하먼지에서 미생물의 농도와 종 조성을 비교하고자 하였다. 2008년 2월부터 4월까지 울산 지역의 한 지점에서 직경 200 mm의 강수량계를 사용하여 낙하먼지를 포집하였으며, 조사 기간 동안 울산 지역에서 황사 현상은 3월 2일과 3일에 걸쳐 한번 발생하였다. 낙하먼지에 포함된 세균의 농도는, 황사 기간 동안 포집한 시료에서 황사가 없는 기간의 시료에 비해 크게 높았다. 하지만, 낙하먼지의 진균 농도는 비 황사 기간에 비해 황사 기간 동안 유의성 있게 증가하지 않았으며, 조사 기간 동안 세균에 비해 상대적으로 일정한 수준을 유지하였다. 낙하먼지 시료로부터 분리한 45개 세균의 16S rRNA 유전자 염기 서열을 분석하였으며, 이들 세균은 Bacillus 속의 B. amyloliquefaciens, B. aryabhattai, B. atrophaeus, B. licheniformis, B. megaterium, B. methylotrophicus, B. pumilus, B. sonorensis, B. subtlis, B. vallismortis와 Staphylococcus 속의 S. epidermidis, S. succinus로 확인되었다. 진균의 경우 Mucor 속, Alternaria 속, Cladosporium 속, Aspergillus 속 등을 황사 기간 및 비 황사 기간의 시료에서 모두 확인할 수 있었다. Bacillus 속과 같은 내생포자를 형성하는 세균이 진균(포자)에 비해 황사 먼지에의 부착 및 이동과 더 연관이 있는 것으로 보인다.

• 한국환경보건학회지
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• 제37권4호
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• pp.279-288
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• 2011

Objectives: This study investigated the levels and components of floor-settled dust in two elementary schools located at different sites (one near the Shihwa industrial complex and the other in a rural area) in order to evaluate the amounts of trace metal elements (As, Cd, Co, Cr, Cu, Ni, Pb and Zn) and microorganisms. Methods: Over twenty settled-dust samples were collected from the two elementary schools. Trace metal elements were extracted from the dust using hydrochloric acid and nitric acid, and the amounts were measured by ICP-OES. Microbiological analysis was performed by bacterial culturing using R2A medium and denaturing gradient gel electrophoresis (DGGE). Results: The results showed that the amounts of three metal elements (Cr, Pb, and Zn) were significantly different between the schools (${\alpha}$=0.05, p<0.04). In addition, microbial communities in each school were highly correlated with one another. Among the identified microorganisms, a number of potentially opportunistic microorganisms, including antibiotic-resistant bacteria such as Acinetobacter baumannii, were found. Conclusions: This study will provide preliminary data for assessing levels and types of chemical and microbiological agents in elementary schools and for further evaluating human health risks associated with the agents.

• Journal of Plant Biotechnology
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• 제40권3호
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• pp.141-146
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• 2013

본 연구는 낙엽송 배발생세포의 배양기간에 따른 현탁세포의 생장, 체세포배 유도 및 발아를 위한 다양한 삼투압제 종류 및 농도 효과를 조사하기 위해 수행되었다. 배발생 현탁세포의 생장은 배양일수가 증가함에 따라 settled cells volume (SCV)가 지속적으로 증가하는 경향을 보여 배양 18일 경에는 최대 10.1 ml의 SCV를 보였고, 그 이후로는 세포생장이 감소하였다. 현탁세포로부터 체세포배 발생을 위한 삼투압제 종류 및 농도에 따른 효과 비교에서 최대의 체세포배 유도 수는 0.2 M sucrose 처리구에서 352.3개(/g FW)로 나타났으며, 0.2 M maltose (203.7) 및 0.3 M maltose (193.7) 처리구에서 또한 효과가 있었다. 그러나 7.5% polyethylene glycol (PEG)이 첨가된 0.15 M sucrose 혹은 maltose 각각의 처리구에서는 체세포배 발생이 전혀 이루어지지 않았다. 다양한 삼투압제 종류 및 농도에서 발생된 체세포배의 발아율 비교에서는 최대 자엽 형성율(25.2%) 0.3 M maltose, 하배축 형성률(39%), 뿌리 발생율(30.3%) 및 식물체 재분화율(3.5%)은 0.2 M sucrose 처리구에서 각각 나타났다.

• 한국패류학회지
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• 제16권1_2호
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• pp.21-24
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• 2000

The apple snails of the genus Pomacea have been introduced by the snail breeders illegally into Korea. Authors confirmed that the natural life cycle of at least two pomacean species, Pomacea canaliculata and P. insularus, has been already settled down locally in the southern areas of Korea.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2003년도 춘계전력전자학술대회 논문집(1)
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• pp.383-388
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• 2003

The stand alone PV system's stability and cost is influenced by a design method, as its application products are various. In order to systematize the the stand alone PV system's design method based on experience, this research settled the capacity computation method of PV module and battery and developed a simulator. And Its characteristic is confirmed by applying to PV street lamp design.

• 건축역사연구
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• 제3권2호
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• pp.111-124
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• 1994

The major characteristics of warrior houses in Edo period were as follows: (1)The disposition, size, and facilities of warrior houses was to be settled strictly according to the social position. (2)The spatial characteristics of warrior houses has conceptual o-rganization of dual structure, such as entertainment/daily life, high/low, outside/inside.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1996년도 추계학술대회발표논문집; 고려대학교, 서울; 26 Oct. 1996
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• pp.35-38
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• 1996

It's a rather difficult for new product launch strategy establishment to be settled down because we must know the correlation between the quantitative and the qualitative information. Therefore, we introduce you case-based reasoning system that use its correlation and new product launch's experience in the past. Using the real cases, this system evaluates the performance as we compare human expert's new product sales forecasting with system's.

• 한국복식학회:학술대회논문집
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• 한국복식학회 2003년도 International Costume Conference
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• pp.69-69
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• 2003

In the late 1970s, Punk style that appeared according to the social reaction among labor class youngsters has reappeared till now, and also the emotion and mode are working on fashion greatly. In addition to that, as it pervades to young generation more freely, it's becoming a kind of origin in creative fashion. Especially, Punk style leather jacket has spread to high fashion and settled down as an essential item through popularization of leather jacket.