• Geomechanics and Engineering
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• 제4권4호
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• pp.281-294
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• 2012

Filtration using granular media such as quarried sand, anthracite and granular activated carbon is a well-known technique used in both water and wastewater treatment. A relatively new pre-filtration method called pebble matrix filtration (PMF) technology has been proved effective in treating high turbidity water during heavy rain periods that occur in many parts of the world. Sand and pebbles are the principal filter media used in PMF laboratory and pilot field trials conducted in the UK, Papua New Guinea and Serbia. However during first full-scale trials at a water treatment plant in Sri Lanka in 2008, problems were encountered in sourcing the required uniform size and shape of pebbles due to cost, scarcity and Government regulations on pebble dredging. As an alternative to pebbles, hand-made clay pebbles (balls) were fired in a kiln and their performance evaluated for the sustainability of the PMF system. These clay balls within a filter bed are subjected to stresses due to self-weight and overburden, therefore, it is important that clay balls should be able to withstand these stresses in water saturated conditions. In this paper, experimentally determined physical properties including compression failure load (Uniaxial Compressive Strength) and tensile strength at failure (theoretical) of hand-made clay balls are described. Hand-made clay balls fired between the kiln temperatures of $875^{\circ}C$ to $960^{\circ}C$ gave failure loads of between 3.0 kN and 7.1 kN. In another test when clay balls were fired to $1250^{\circ}C$ the failure load was 35.0 kN compared to natural Scottish cobbles with an average failure load of 29.5 kN. The uniaxial compressive strength of clay balls obtained by experiment has been presented in terms of the tensile yield stress of clay balls. Based on the effective stress principle in soil mechanics, a method for the estimation of maximum theoretical load on clay balls used as filter media is proposed and compared with experimental failure loads.

• 한국지반환경공학회 논문집
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• 제19권9호
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• pp.29-36
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• 2018

국내 외에서는 사면붕괴를 사전에 예방할 수 있는 모니터링 및 자동계측기에 관한 다수의 연구가 수행되어져 오고 있으나, 이러한 연구들은 다소 복잡한 구조로 이루어져 있고, 계측시스템의 대부분은 사면표층에 설치되어 있으며, 사면파괴 전 붕괴징후를 사전에 감지하고 경보를 울려주는 계측시스템에 관한 연구는 미진한 실정이다. 본 연구에서는 강우 조건에서의 사면 붕괴 메카니즘을 파악하기 위하여 사면 붕괴 실험을 수행하고 지중 변위와 체적 함수비 계측을 통해 사면 모델의 붕괴 초기에 발생되는 함수비와 변위 거동 특성을 분석하였다. 본 연구를 통해 고찰된 내용은 지방자치단체에서 집중호우로 인해 급경사지 붕괴위험지역 등 사면붕괴나 산사태가 예측될 때 사전에 주민을 대피시키는 사면붕괴 예 경보시스템 구축 시 기초자료로 활용될 수 있을 것으로 기대된다.

• 벤처창업연구
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• 제13권2호
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• pp.15-26
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• 2018

본 연구는 실패 이후, 재창업을 하는 기업인들을 대상으로 실패 경험, 재창업 동기, 정부지원사업경험과 재창업교육 등이 재창업기업성과에 미치는 영향과 함께, 상기 4가지 요인들이 채무/신용문제에 따라 재창업기업성과에 미치는 영향이 어떻게 변하는지 분석하였다. 분석결과 실패경험은 재창업기업성과에 유의미한 영향이 없게 나타난 반면, 재창업동기와 정부지원사업경험 그리고 재창업교육은 재창업기업성과에 유의미한 영향을 미치고 있었다. 한편, 신용문제를 고려한 분석에서는 상기 4가지 요인들 모두 신용문제의 유무에 따라 재창업기업 성과에 서로 다른 영향을 보이고 있다. 신용문제가 없는 재창업 그룹에서 재창업동기와 실패경험이 재창업기업성과에 유의미한 영향을 미치고 있는 반면, 신용문제가 있는 재창업 그룹에서는 정부지원사업경험과 재창업교육 참여가 재창업기업성과에 유의미한 영향을 미치고 있었다. 본 연구결과 첫째, 신용문제 유무에 따라 재창업기업성과에 영향을 미치는 요인들이 다르다는 것을 보여주고 있다. 이는 실패 및 재창업 관한 연구 뿐 아니라, 재창업 정책 개발을 함에 있어 신용문제에 따른 차별적 접근이 필요하다는 점을 말하고 있으며, 둘째, 실패경험이 재창업기업성과에 영향이 없게 나온 것은 폐업 후 재창업까지 소요되는 기간 (평균 56개월, 단, 경우에 따라 2년~ 7년 이상이 소요)이 실패경험이 자산화되는데 영향이 미칠 수 있기 때문이라는 것을 추정 할 수 있었다. 이는 기존 연구에서 다루지 않았던 부분으로 향후, 실패경험과 재창업에 대한 직/간접 영향을 연구하고, 정책을 수립할 때, 진부화라는 개념에서 실패 이후 재창업까지 소요되는 기간을 고려해야 할 필요성을 제시하고 있다.

• 한국산림과학회지
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• 제46권1호
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• pp.70-76
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• 1980

Forestry economics in Japan faces the problems of severe decreasing of timber demand and increased importing of foreign timber. Moreover, lack of labour and heavy wages in forestry cause the failure of normal forest management in Japan. In the situation, it is necessary for enhancing the forest production to reorganize the forest resources, to optimize the amount of importing foreign timber, and to greatly expand the new forest road, reforestation, government subsidy and poritical financial support for the foresters. At present, improvement of mangement of national forest as well as public function of forest are being discussed for the forest production on the government basis.

• 한국중재학회지:중재연구
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• 제19권3호
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• pp.199-217
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• 2009

During the urbanization progresses, apartments such as the house of commons, representing our homes are situated in space. However, many consumer problems of our country's apartment house are caused by the government's failure of housing policy and consumer dispute resolution system In this study, apartment house and alleviate consumer disputes relating to in proactive ways to improve the government's housing policy was presented. At the same time, since the revision of Consumer Fundamental Act on collective alternative dispute resolution system has proposed scheme, this occurred after a dispute to resolve the dispute can be more efficient ways.

• 자원ㆍ환경경제연구
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• 제16권3호
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• pp.607-627
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• 2007

By reviewing the current application of Environmental Fiscal Instruments in China, existing policy gaps and weakness, and the feasibility of using EFIs in China, this paper pointed out that the Chinese government faces an historic opportunity for promoting the development of a comprehensive environmental fiscal system. It is proposed that as far as possible the real economic and social costs of pollution and environmental degradation should be reflected in the prices charged for the use of environmental and natural resources. Chinese government should systematize existing environmental fiscal funds and policies, gradually setting up a framework for integrating environmental fiscal instruments into the public financial system.

• 한국IT서비스학회지
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• 제7권1호
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• pp.45-62
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• 2008

This review examines the rapid growth of qualitative and quantitative of telecommunication industry for past couple of years from customer's viewpoint. Most of the telecommunication products were positioned in the market by the businesses and government's support, but the entity of telecommunication products were never interpreted from the user's viewpoint. Even though, various kinds of telecommunication services have been actively discussed by businesses, government, and IT professionals, it has not been sufficiently discussed by the marketing academia where they need to focus a lot on customer's utility. For the purpose of providing an insight of the telecommunication service marketing strategy, this study looked over old and new directions of growth, failure and evolution of services by focusing on two main pillar of communication business, which is high-speed internet and mobile phone service. Additionally, the research explains and mentions the limit and trend of the telecommunication service marketing, and the future research task that needs to be solved.

• Journal of Contemporary Eastern Asia
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• 제10권1호
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• pp.15-23
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• 2011

This study focuses on the knowledge-transfer activities of Korean universities at the organisational level. Considering the idiosyncratic characteristics of the Korean university system, as well as those of universities in other recently developed Asian countries experienced a rapid economic catch-up, this study is more interested in the relationship between the scientific capacity of universities and their knowledge-transfer activities, and between universities' funding sources and their knowledge-transfer activities. According to the results of the study, scientific capacity in a specific discipline, such as engineering, is important for universities in both other developed countries and in Korea, while scientific capacity (regardless of the discipline) is apparently not important for Korean universities, particularly in the area of domestic publication. Furthermore, this result supports the proposition suggested that strategically chosen industrial sectors in rapid catch-up countries are closely related to the scientific capacity of universities in specific disciplines. In terms of funding sources, the amount of funding from industry is strongly related to the knowledge-transfer activities of universities, whereas the proportion of funding from industry relative to the total amount of funding is not as significantly related to knowledge-transfer activities. The failure to identify a significant relationship between central government funding and knowledge-transfer activities may be due to less strict requirements for commercialisation in central government R&D programmes. Otherwise, central government funding fails to generate meaningful knowledge-transfer activities in universities.

• 기술혁신연구
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• 제16권2호
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• pp.125-145
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• 2008

The paper evaluates the Korean science, technology, and innovation policy(STIP) in terms of an individual firm. The firm is Viromed(Ltd), a new technology-based venture company in the field of biotechnology. The case is compared with the 'Hwang Project', which is known as a typical failure case in Korea. In order to evaluate the Korean STIP, we establish 6 areas, which are technological infrastructure, institutional infrastructure, human capital infrastructure, technology market, industrial base, and innovation networks. The study shows that the policy schemes relating with technological infrastructure, institutional infrastructure, human capital infrastructure, and industrial base play a positive role in the start-up, development and innovation of Viromed(Ltd). However, we can hardly find the role of Korean government in fostering the technology market, transferring the technological output to economic performance. Although the international networks with the British, American, and Japanese firms or investors were a key success factor of the growth of Viromed(Ltd), the role of the government in this policy area was not enough. As for the 'Hwang Project', we suggest that the government should consider the possibility of commercialization in choosing R&D projects and determining the size of financial aids. Since the evaluation of the Korean STIP is based on an individual firm, the results of the paper need to be confirmed by a systematic comparison with other cases or industries.

• 보건행정학회지
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• 제6권2호
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• pp.14-42
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• 1996

민간 시장에서의 경쟁의 실패는 일반적으로 정부개입과 규제의 대표적인 근거를 제공한다. 하지만 보건의료분야는 정보의 비대칭성, 의료보험의 보편화, 고가의료기술 및 장비에 의한 비용상승 등과 같은 특수성으로 인하여, 정부가 단순히 충분한 의료공급자나 병원의 수를 보장함으로써 가격의 하락과 서비스 양의 증가와 같은 경쟁의 효과를 기대하기 힘들다. 본 논문은 경쟁과 규제와 관련한 보건의료의 특수성과, 보건의료분야에서 경쟁이 소비자 후생에 미치는 영향에 관한 이론 및 실증분석의 결과들을 고찰한다. 나아가 경쟁과 규제가 조화된 지속가능한(sustainable) 보건의료체계를 위해, 병원설비투자의 직접적인 규제로부터 규제를 통해 경쟁을 촉진시키는 인센티브규제(incentive regulation)로서의 지불보상제도 그리고 필요한 정보의 제공을 통한 시장기능의 회복에 이르는, 정부가 집행할 수 있는 효과적인 정책도구들을 분석한다.