• 한국사회복지학
• /
• 제52권
• /
• pp.241-272
• /
• 2003

본 연구에서는 지역사회 탈빈곤 정책의 일환으로 도입된 자활사업의 성과와 한계를 분석하고 이의 개선방안을 모색하고자 하는 연구목적에 기반하여, 자활참여자들의 자립태도 및 자립요소의 제고라는 측면에서 자활사업의 효과를 분석하였다. 그리고, 이와 더불어, 자활사업의 성과에 자활사업 참여자들의 개인 및 가족특성, 자활후견기관에서의 지원조치들이 어떠한 영향을 미치고 있는지를 실증분석하였다. 실증분석에는 2002년 5월 전북 및 경남지역 자활후견기관에서 자활사업 참여자를 대상으로 이루어진 설문조사 데이터가 활용되었으며, 분석결과에서는 다음과 같은 사실을 확인할 수 있었다. 첫째, 자활사업은 자활사업 참여자의 자립태도 및 자립인식의 제고에 긍정적 성과를 거두고 있음이 나타났지만, 자립요소 및 자립전망의 제고에 있어서는 그 성과가 미흡한 것으로 확인되었다. 둘째, 자활사업의 긍정적 성과는 여성, 고연령층, 저학력층에서 높게 나타났으며, 특히 건강하고 기술자격증을 보유한 사람에게서 자립태도의 변화 뿐 아니라 자립요소의 제고의 긍정적 성과가 높은 것으로 확인되었다. 셋째, 자활후견기관에서의 지원양상도 자활사업의 성과에 주요하게 영향을 미치는 것으로 나타났는데, 직무배치, 직업교육프로그램, 기관내 관계망 및 조직풍토 등은 자립태도 및 자립요소의 제고에 긍정적인 영향이 있는 것으로, 반면 인센티브 조치 및 프로그램 유형(시장형) 등은 별다른 영향이 없거나 오히려 부정적인 영향이 있는 것으로 확인되었다. 이상과 같은 분석결과는 자활사업의 효과성 제고를 위해서는 제도적 측면 및 자활후견기관 운영의 측면에서 개선조치들이 광범위하게 요청됨을, 곧 자활대상자 선정과정 뿐 아니라 자활사업 프로그램 및 교육훈련 프로그램의 구성, 자활기관의 운영 등에서의 적극적인 개선이 요청됨을 시시하여 준다.

• 한국시스템다이내믹스연구
• /
• 제11권3호
• /
• pp.61-86
• /
• 2010

This research analyzed on the future energy society of Korea in 2030 using system thinking approach. Key uncertainty factors determining the future energy society were analyzed in a multi disciplinary view point such as politics, economy, society, ecology and technology. Three causal loop diagrams for the future energy system in Korea and related policy leverages were shown as well. 'Global economic trends', 'change of industrial structure' and 'energy price' were identified as key uncertainty factors determining the Korean energy future. Three causal loop diagrams named as 'rate of energy self－sufficiency and alternative energy production', 'economic activity and energy demand' and 'Excavation of new growth engines' were developed. We integrated those causal loop diagrams into one to understand the entire energy system of the future, proposed three strategic scenarios(optimistic, pessimistic and most likely) and discussed implications and limits of this research.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
• /
• pp.582-582
• /
• 2012

Characteristics of a fusion-driven transmutation reactor was investigated. A compact reactor concept is desirable from an economic viewpoint. For the optimal design of a reactor, a radial build of reactor components has to be determined by considering the plasma physics and engineering constraints which inter-relate various reactor components. In a transmutation reactor, design of blanket and shield play a key role in determining the size of a reactor; the blanket should produce enough tritium for tritium self-sufficiency, the transmutation rate of waste has to be maximized, and the shield should provide sufficient protection for the superconducting toroidal field (TF) coil. To determine the radial build of the blanket and the shield, not only a radiation transport analysis but also a burnup calculation were coupled with the system analysis and it allowed the self-consistent determination of the design parameters of a transmutation reactor.

• 한국경영과학회지
• /
• 제35권2호
• /
• pp.53-69
• /
• 2010

This paper proposes an ant-based routing algorithm, Ant System-Routing in wireless Senor Networks(AS-RSN), for wireless sensor networks. Using a transition rule in Ant System, sensors can spread data traffic over the whole network to achieve energy balance, and consequently, maximize the lifetime of sensor networks. The transition rule advances one of the original Ant System by re-defining link cost which is a metric devised to consider energy-sufficiency as well as energy-efficiency. This metric gives rise to the design of the AS-RSN algorithm devised to balance the data traffic of sensor networks in a decentralized manner and consequently prolong the lifetime of the networks. Therefore, AS-RSN is scalable in the number of sensors and also robust to the variations in the dynamics of event generation. We demonstrate the effectiveness of the proposed algorithm by comparing three existing routing algorithms: Direct Communication Approach, Minimum Transmission Energy, and Self-Organized Routing and find that energy balance should be considered to extend lifetime of sensor network and increase robustness of sensor network for diverse event generation patterns.

• 농촌계획
• /
• 제20권2호
• /
• pp.127-137
• /
• 2014

Self-sufficiency rate of food in South Korea is almost at the lowest level among OECD countries, and the decrease tend of farmland is expected to be continued. In this situation, the government has been revised the target self-sufficiency rate of food, and carried forward various policies in order to achieve it. One of those policies is the restoration business of idle farmland which is planned to carry forward after 2015. This study set up indicators evaluating effective use of idle farmland, and tried to apply in the field before carrying forward restoration business. The result of this study may be summarized as follows. First of all, it reset an evaluation indicator that was based on the evaluation indicator developed in order to set application directions of idle farmland. Next, it selected 30 idle farmlands with reset evaluation indicator among 11,635 which were inspected nationwide in 2012. Before applying indicator, it measured the condition of recycling such as accessibility of farmland, condition of irrigation and drainage system, land state, and surroundings by field investigation. Then, it calculated composite score in each target area through applying indicators, and verified the indicator by comparing calculated result with the one which was decided from field investigation. Finally, it carried out field investigation, correct and upgrade some problems of the standard of score calculation that was found during applying previously set evaluation indicator to target area, and established the final standard of calculation for evaluation indicator.

• 전기학회논문지
• /
• 제66권3호
• /
• pp.486-492
• /
• 2017

In recent years, renewable energy sources have been mentioned as solution to environmental regulation and energy supply-demand. Energy storage systems are needed to mitigate the intermittent output characteristics of renewable energy sources and to operate micro grid efficiently using renewable energy generation systems. However, despite the necessity of energy storage system, this cannot secure the economical efficiency of the energy storage system by high initial cost. In this paper, a micro grid is constructed to supply electric power to industrial customers by using solar power generation system and energy storage system among renewable energy generation power sources and operated to improve energy independence. In the case study, we use photovoltaic system which is representative renewable energy generation system. Unlike conventional photovoltaic system, this system uses floating photovoltaic system with the advantage of having high output and no land area limitations. It is operated for the purpose of improving energy independence in the micro grid. In order to secure economical efficiency, the energy storage system operates a micro grid with a minimum capacity. Finally, this paper calculates the appropriate subsidy for the energy storage capacity.

• 한국사회복지학
• /
• 제56권2호
• /
• pp.311-326
• /
• 2004

본 연구는 자활사업의 개입모델로서 사례관리를 제안하며 그 실천적 적용가능성을 살펴본다. 근로빈곤층을 대상으로 한 자활사업이 궁극적으로 탈빈곤의 효과와 함께 지역사회에서의 자립된 삶을 얻는 기회를 제공하기 위해서는 일자리제공을 통한 경제적 자활 뿐 아니라 지역사회에서 개인의 삶에 영향을 미치는 다양한 사회적 위험요인들에 대한 지지적 서비스가 필요하다. 이를 위해 본 연구에서는 자활이 갖는 실천적 의미와 사례관리의 필요성을 살펴보고 이에 적절한 사례관리의 유형과 사례관리자의 역할을 살펴본다. 또한, 자활사업에 필요한 사례관리의 개입방향-상황중심적 사고를 통한 통합적인 사례관리체계의 구성, 역량강화적 접근에 기초한 주체적인 참여와 자율적인 운영, 사회망 개발과 연대적 노력을 통한 포괄적인 사례관리 프로그램으로의 발전-을 제안함으로써 고용과 복지가 통합적으로 고려되는 자활사업의 틀을 구성하고자 한다. 본 연구는 자활사업대상자와 기관차원에서 활용할 수 있는 실천프로그램을 제시함으로써 정책적 차원에 그치던 자활사업에 관한 논의를 서비스제공 차원에서 구체화시킨다는 의의가 있다.

• 농업과학연구
• /
• 제38권2호
• /
• pp.369-381
• /
• 2011

Ginseng in Korea has not only the big production value but also till a good reputation from overseas in the name of 'Korea Ginseng'. Having spread rapidly nationwide from 2000 year, its production keeps on increasing but its consumption becomes lazy and its price is also falling down because of comsumer's concern about mainly overusing pesticide for ginseng. In order to cope with this problem, the government introduced the GAP certification system to ginseng in 2006 to reflect consumer's needs for food safety. This system will be a good opportunity to promote ginseng consumption dramatically. In this aspect it is very important to know how well this system is established and how ginseng farmers build marketing strategies to draw new wind in the market. This study was carried out to look over the GAP certified ginseng system and show its marketing strategies using 4P's(product, place, promotion and price). The main results are as follows. GAP ginseng system currently has some weaknesses such as lack of systematic certification management and after-service, nonrealistic certification fee and poor linkage from production to consumption. In the marketing mix strategies, product strategy suggests that the most desirable appearance be transplanted ginseng filled with branch roots and 4 to 5 year-ginseng, and it is necessary to choose multi-brand strategy divided for present into for self-sufficiency and family brand strategy by use if its brand enlarges to processed products in the future. In the place strategy, 3 stages like 'producer group' - 'GAP certified facility' - 'sales shop' are based as the physical marketing channel according to traceability, and connected with giant retail market and environment friendly stand, and if its sales volume enlarges, it should be considered the GAP ginseng specialized marketplace which is a type of chain store. In the promotion strategy, the promotion of government level is necessary at first and producer alliances require the promotion targeting at the group of women under 40 with differentiation from price, quality, and safety. In the price strategy, the early stage-high price strategy which sets 20~25% higher for self-sufficiency and 30~35% for present is desirable.

• 한국자원식물학회지
• /
• 제16권2호
• /
• pp.134-140
• /
• 2003

몇가지 전$.$ 후작물을 도입하여 들깨에 관한 작부체계 확립으로 안정생산 기반을 구축하고자, 들깨단작 등 6작부유형을 도입하여 2001년부터 2002년까지 2년에 걸쳐 시험한 결과 잡초발생은 보리+들깨, 흥화+들깨에서 많았다 보리+들깨와 홍화+들깨의 작부유형은 전$.$후작물의 생육에 지장이 없으며, 홍화+들깨는 전작물의 비닐 피복물을 후작물에서도 이용할 수 있어 생력화와 경영비를 절감할 수 있었으나, 참깨가 전작물로 도입 시에는 파종기가 늦어 생육이 부진하고 수량이 감소되었다. 소득은 들깨단작에 비하여 보리+들깨와 홍화+들깨에서 각각 4.1배, 5.2배 높았다. 작부유형별 토양 물리성 개선효과는 보리+들깨와 홍화+들깨에서 양호하였다.

• Nuclear Engineering and Technology
• /
• 제40권1호
• /
• pp.87-92
• /
• 2008

Tokamak reactor system analysis code was developed at KAERI (Korea Atomic Energy Research Institute) and is used here for the conceptual development of a DEMO reactor. In the system analysis code, prospects of the development of plasma physics and the relevant technology are included in a simple mathematical model, i.e., the overall plant power balance equation and the plasma power balance equation. This system analysis code provides satisfactory results for developing the concept of a DEMO reactor and for identifying the necessary R&D areas, both in the physics and technology areas for the realization of the concept. With this system analysis code, the performance of a DEMO reactor with a limited extension of the plasma physics and technology adopted in the ITER design. The main requirements for the DEMO reactor were selected as: 1) demonstrate tritium self-sufficiency, 2) generate net electricity, and 3) achieve a steady-state operation. It was shown that to access an operational region for higher performance, the main restrictions are presented by the divertor heat load and the steady-state operation requirements.