• 농업과학연구
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• 제50권4호
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• pp.629-643
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• 2023

The purpose of this study was to examine the effectiveness and efficiency of a policy by comparing and analyzing the impact of the rice market isolation system and production adjustment system (strategic crops direct payment system that induces the cultivation of other crops instead of rice) on rice supply, rice price, and government's financial expenditure. To achieve this purpose, a rice supply and demand forecasting and policy simulation model was developed in this study using a partial equilibrium model limited to a single item (rice), a dynamic equation model system, and a structural equation system that reflects the casual relationship between variables with economic theory. The rice policy analysis model used a recursive model and not a simultaneous equation model. The policy is distinct from that of previous studies, in which changes in government's policy affected the price of rice during harvest and the lean season before the next harvest, and price changes affected the supply and demand of rice according to the modeling, that is, a more specific policy effect analysis. The analysis showed that the market isolation system increased government's financial expenditure compared to the production adjustment system, suggesting low policy financial efficiency, low policy effectiveness on target, and increased harvest price. In particular, the market isolation system temporarily increased the price during harvest season but decreased the price during the lean season due to an increase in ending stock caused by increased production and government stock. Therefore, a decrease in price during the lean season may decrease annual farm-gate prices, and the reverse seasonal amplitude is expected to intensify.

• 공업화학
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• 제28권4호
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• pp.427-431
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• 2017

최근 공동주택이 증가함에 따라 층간소음문제가 증가하고 있다. 이로 인해 더 효과적인 층간소음저감 시스템이 요구되고 있다. 향후 고층빌딩이 더 많이 건설될 것이므로 이런 시스템은 시장에서 더욱 수요가 요구되어지는 중요한 기술이다. 본 연구에서는 폐고무를 이용하여 신규 바닥 소음 저감 판넬을 설계하고 제작하였다. 실험실 및 실제 필드조건에서 소음 저감을 조사하였다. Field test 결과 경량 및 중량충격음 레벨이 각각 52, 48 dB로 우수한 결과를 보였다. 기존 구조 대비하여 22~42 mm의 두께 저감을 할 수 있었다.

• 한국태양에너지학회 논문집
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• 제31권5호
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• pp.33-40
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• 2011

In this study, it is quantitatively analyzed for thermal Characteristics of isolation-heat paint which has been supplied to a domestic market through experiments and simulations. In the case of experiment using the container box, it shows 8% decrease on cooling energy consumption in a summer season, but shows increase on heating energy consumption. As a result, the analysis has found increase of energy consumption. As a result of holding simulations with meteorological data of domestic major cities, it shows an increase of energy consumption in domestic condition, and it is hard to expect an energy saving from the isolation-heat paint unless greater air-conditioning load.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.257-262
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• 2003

Base isolation bearings are known as an effective system to Protect bridges from the earthquake damage. There are many types of base isolation bearings in the market. Among them, steel hysteretic damper, made of mild steel and one of the oldest ones, has some good features. Since steel hysteretic damper is made of steel and has simple structure, it is cheeper and easier to maintain than other types. Despite the advantages, steel hysteretic damper with pin-type elements has no application in Korea. The steel hysteretic damper with pin-type elements are tested to examin the basic characteristics and to evaluate antiseismic performance. In this paper, the results of the test are presented.

• 대한미생물학회지
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• 제22권2호
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• pp.103-108
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• 1987

Vibrio vulnificus septicemia is nor-rare diease in Korea. Carriage rate of the orgaism by shellfish is not well known. In this study performance of SPS agar and SGP broth and effect of storage of specimen in the isolaton was determined using the shellfish specimens collected from the coast and market of Koonsan city. Isolation rate was similar with TCBS and with SPS, but the rate became much highher after enrichment in SGP broth. 80% of oyster speimes were positve when inoculated immediately, but the rate dropped rapidly after storage of specimens at freezing temperature for sometime. All of the isolates fermented lactose in 2 days. A few isolates were not identfiable with API 20E system, because of acid prduction from melibiose. Serover 04 was the frequent isolates.

• 한국소음진동공학회논문집
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• 제17권5호
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• pp.448-455
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• 2007

As Decentralized Generation(DG) becomes more reliable and economically feasible, it is expected that a higher application of DG units would be interconnected to the existing grids. This new market penetration of DG technologies is linked to a large number of factors like technologies costs and performances, interconnection issues, safety, market regulations, environmental issues or grid connection constrains. This paper describes the procedures and results for the mechanical, electrical, and environmental tests of MGT on actual grid-connection under Korean regulations. As one of the achievements, the simulation model of MGT was developed, so that it will be able to analyze or propose new distributed generation system using MGT. The field test was conducted in order to respond to a wide variety of needs for noise reduction and utilization and its performance was evaluated in consideration of its operational problems. The MGT is successfully supplying electricity to Korean grids with satisfying various regulations. The suggested strategy and experience for the evaluation of the distributed generation will be used for the introduction of other distributed generation technologies into the grid in the future.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 춘계학술대회논문집
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• pp.1243-1246
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• 2006

As remodeling market is growing and peoples' concern on health and well-being is getting high, there is a need to apply environmentally friendly approach to remodeling an apartment houses. But, in point of the impact noise concerned, the thickness of the concrete slab and the limited ceiling height of the remodelling houses are the main constraints to improve the impact noise performance. In order to investigate the effect of the impact noise isolation as structural treatments for the structural elements, heavy-weight impact noise and tapping noise were measured in an remodeling building. As a result, structural strengthening method by H-beam was successful to enhance the impact noise level at about 3 or 4 class by the sound classification system.

• International Journal of Human Ecology
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• 제8권1호
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• pp.53-66
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• 2007

The purpose of the study is to microscopically re-clarify the reality of renovation and conflicts that females faced within their families since the modernization period. The research method is the literature review. Families have been considered based on the formation of individual spaces for housing by husband and wife. The study will analyze changes in daily lives and housing consciousness to understand how such housing areas are transforming. The results of the study are as follows. From the perspective of symbolic interaction, in a traditional society, Korean females have been experiencing alienation and isolation in private areas in their daily lives due to family centrism and male chauvinism. Since industrialization, the female's role as the major consumer has been emphasized. Also, in terms of housing space, the symbol of family interaction was influenced more by utility, rationality, and equality than spatial hierarchy. From the perspective of the dailiness of phenomenological traditions, the modern girl's housing consciousness, which appeared during modernization under colonial rule, is considered as revolutionary from traditional society. Soon after in industrialized society, females appeared as leaders of 'sweet home'. They also became the main body to create the space for living by giving meaning to the interior of housing. Considering dailiness from the Marxist perspective, under the colonial social system, females became the subject of colonization through education, socialization, and the labor market. The modern public system presents the female as 'a wise mom and good wife' or laborer causing the colonization of her life. After industrialization, the socialization of housing and prioritization of spending caused the daily lives of females to become colonized by the consumption market.

• Asian-Australasian Journal of Animal Sciences
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• 제12권2호
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• pp.226-232
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• 1999

Early-weaning at an age of less than 21 days and removal of pigs to a second isolated site, which is commonly referred to as segregated early weaning (SEW), has been shown to substantially reduce disease transfer from the dam. This strategy has been successful in reducing the number of pathogens, but has not been successful in eliminating all pathogens. Although SEW has failed in most instances to totally eliminate pathogens, performance as measured by gain and efficiency through the nursery phase has been shown to be enhanced. In addition, SEW pigs have been shown to perform well on less complex nursery diets. Pigs which are continued on a similar isolation regime to market weight have been shown to have a remarkable improvement in feed intake, gain and efficiency. However, pigs which are co-mingled with conventional pigs after the nursery phase have either no improvement in performance or reduced performance. Backfat and carcass lean yield have been shown to be enhanced by SEW in high lean gain pigs, but not in lower lean gain pigs. Exposure of pigs to antigens which activate the immune system and increase the level of immunological stress has been suggested as the mechanism involved in depressing growth and performance of pigs.

• 한국노년학
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• 제39권2호
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• pp.325-345
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• 2019

본 연구의 목적은 사회적으로 고립된 남성 독거노인의 생애사적 접근을 통해 사회적으로 고립되기까지의 과정과 삶을 심도 있게 이해하기 위한 탐색적 연구이다. 연구방법으로는 질적연구 생애사 방법의 하나인 'Mandelbaum(1973)의 삶의 영역(Dimensions), 전환점(turnings), 적응(adaptation)'이라는 개념틀로 분석하였다. 본 연구결과에 따르면, 사회적으로 고립된 노인들은 가족 관계 단절, 빈곤, 열악한 일자리, 건강악화 등의 복합적인 어려움을 경험하면서 사회적으로 고립된 것으로 나타났다. 구체적으로 삶의 영역에서 고립 전의 원가족과의 삶에서 부모와의 원만하지 못한 관계나 부재, 가족의 빈곤, 주위 사람들과의 원만하지 못한 관계 등의 경험이 있었다. 노동시장에서 막노동, 배달, 장사, 허드렛일 등의 좋지 않은 일자리를 갖고 있었다. 전환점의 영역에서는 외환위기, 부모의 이혼과 죽음, 배우자 외도, 경제적 어려움 등의 여러 원인으로 원가족과 배우자와의 분리로 인한 가족과의 단절을 경험하게 되었다. 적응의 영역에서 참여자들은 삶의 각 전환점에서 변화된 삶을 받아들이며 자신의 역할을 수행하면서 타협하고 절충하면서 적절히 적응하려는 노력을 해나가고 있었다. 국민기초수급자라는 사회적 안전망 제도에 들어왔고 그 안전망을 지키기 위해 한곳에 머무르는 지금의 삶이 더 안정적인 삶을 살게 만들었으며 개인적인 취미생활과 네트워크를 통한 대리만족으로 적응하고 있음을 밝혔다. 이는 기존연구에서 고립된 노인들이 우울증과 고독사의 위험에 심하게 노출되었다는 연구결과와 다소 다른 결과이다. 하지만 상대적으로 고립감이 낮은 노인을 인터뷰한 본 연구의 특성을 동시에 감안해야 할 것이다. 이 같은 연구 결과를 바탕으로 여러 실천적 정책적 함의를 제시했다.