• Journal of Advanced Navigation Technology
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• v.13 no.2
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• pp.201-207
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• 2009

Recently effective spectrum resource technologies have been studied using a game theorectical approach for cognitive radio networks. Radio resource management is required an effective scheme because the performance of a radio communication system much depends on it's effectiveness. In this paper, we suggest a game theoretical algorithm for adaptive power control which is required an effect scheme in cognitive radio networks. It will be a distributed network. In the network distributed cognitive radio secondary users require an adaptive power control. There are many results which are suggested some possibility of game theoretical approaches for communication resource sharing. However, we suggest a practical game algorithm to achieve Nash equilibrium of all secondary users using a Nash equilibrium theorem in this paper. Particularly, a game model was analyzed for adaptive power control of a cognitive radio network, which is involved in DSSS (Direct Sequence Spread Spectrum) techniques. In case of K=63 and N=12 in the DSSS network, the number of iteration was less than maximum 200 using the suggested algorithm.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.6
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• pp.2489-2499
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• 2011

As R&D cooperation activities with various partners are becoming huge in scale and scope, to achieve successful R&D performance, we need to systematically divide by its characteristics and to stratagemically carry out R&D cooperation activities. In this paper we propose R&D cooperation system between the university and the R&D institute in the geoscience field. The cooperation system can include activities of joint R&D program execution, R&D researcher exchange, R&D infrastructure use, technology commercialization and business exchange. Its system seems to positively affect on R&D performance and when considering the level of innovation as a moderating variable, in the situation of high innovation environment its system is able to positively affect on the R&D performance. For different effects of R&D cooperation activities on individual cooperation performance we can choose proper cooperation activities for R&D cooperation purposes.

• Environmental and Resource Economics Review
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• v.26 no.1
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• pp.57-83
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• 2017

The Japanese government's attempts to reduce fine particles (PM2.5) emission pollution in Japan have been largely ineffective. This is because PM2.5 in Japan originated from various sources including around half from oversea countries such as China. This prompts the Japanese government to start a new initiative to reduce PM2.5 at its origin by transferring local knowledge on air pollution reduction measures and technologies to China and working closely with the Chinese government. To promote further reduction in PM2.5, bilateral corporation between Japan and China should be extended to include Korea. It is recommended that an international convention should be in place to deal with transboundary air pollutants in East Asia. A successful East Asia corporation to reduce PM2.5 will not only contribute to clean air but also to future sustainable low carbon society in this region.

• Journal of Korea Technology Innovation Society
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• v.14 no.4
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• pp.1050-1072
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• 2011

It is well known that international cooperation is considerably more difficult because of the difference of interests, level of technology of the partners, social and culture as well as various macro-environmental conditions. This case study aims to investigate the success factors of international R&D collaboration between two firms. For it, an in-dept interview was conducted to the Etri-Microsoft Information Security Lab. A comprehensive research on theories, such as resource-based theory, network theory, relationship marketing theory and market power perspective was done as well. The results show clear objectives, communications based on trust, core competence on which the counterpart can rely on, consideration on the government decision process as well as the environment are important for success.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.28 no.12
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• pp.974-981
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• 2017

Globally, owing to the rapid expansion of radio stations overseas, the frequency coordination system is managed as a preconditioning system. As a result, it is predicted that many types of radio stations will be established for domestic purposes, such as 5G, low-power IoT devices with long distance, based on licenses and non-license in the future. Many problems such as unnecessary launching of radio resources and spectrum-sharing technology exist, and it is necessary to consider the introduction of the abovementioned system and other plan system. In this paper, we explore the outline of radio station licensing and introduce the contents of the survey on another industry licensing. The plans were studied by discussing problems that may occur in future, through comparative analysis of radio stations and other industry licensing. Moreover, the differences were compared and analyzed using graphs. Finally, we discussed the problems convergence products such as drone may offer in the future.

• Journal of the Korean Recycled Construction Resources Institute
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• v.5 no.4
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• pp.450-457
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• 2017

This study is to develop high quality floor mortar which can be applied in construction sites using EXFG(Expansive admixdure Flue Gas desulfurization gypsum). First, as the substitution rate of ALS(Aluminum Slag) increased, the flow is increased proportionally. EXFG showed a tendency to decrease with increasing substitution rate. Also, in the case of the setting time of 5% of ALS replacement rate, the setting time of Plain compared to EXFG was decreased by 5~20%. The compressive strength increased with the ALS replacement ratio at 0%, 5% and the EXFG replacement ratio at 1%. The strength was increased when the ALS replacement ratio was more than 10%. In the case of ALS replacement rate of 0% and 5%, drying shrinkage compared to plain was decreased by about 10~25% regardless of EXFG replacement rate.

• Korean Journal of Social Welfare
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• v.62 no.4
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• pp.223-248
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• 2010

This study is to explore the contents and interaction of residents voluntary network and propose the strategies to promote residents voluntary network. The grounded theory was utilized to attain our object. Total of seven social worker and 17 residents participated in the study. Data were collected through in-depth interviews and documents. The data were analyzed by using Strauss and Corbin's method. Results are the followings. In open coding 13 categories, 32 subcategories and 133 concepts were constructed. In axial coding causal conditions were qualitative ascent of needs, emergence of the right welfare consumer. Phenomenon was agitation of praxis ground and grope of exist. Contextual conditions were crisis resources, skepticism of welfare. Intervention conditions were maturation of welfare cognition and proliferation of the sense of community responsibility. Strategy were resocialization of voluntary organization and construction of field related service delivery system. Consequence were grass routing welfare strategic fitting service system. In selective coding we constructed the core category: The praxis revolution from bottom for break social welfare environment.

• KLA journal
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• v.43 no.2 s.333
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• pp.2-19
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• 2002

도서관정책을 총괄하고 있는 문화관광부는 2월 5일 「도서관 발전 종합계획」수립계획(안)을 발표하고 금년 상반기 중 관계부처와의 협의를 거쳐 동 계획을 확정할 예정이라고 밝혔다. 이러한 계획이 수립되면 도서관 육성과 진흥에 대한 도서관계, 시민단체, 언론 등의 여망을 기반으로 각 부문에서 산발적으로 추진되어 온 도서관 진흥 정책을 종합하여 관계부처간 협력을 통해 효과적으로 추진해 나가는 계기가 될 것으로 기대된다. 그 동안 문화관광부는 1991년부터 지난해까지 도서관 건립지원에 769억원, 공공도서관의 콘텐츠 확충에 228억원(1995~2001)을 투입하는 등 도서관 육성 및 진흥을 위해 지속적으로 지원해 왔으며, 그 결과 1991년 267관이던 공공도서관이 2001년에 485관(건립중 포함)으로 2배 가까이 증가하였다. 이처럼 절대 부족한 도서관의 확충과 함께 지식정보화시대 도서관을 지식정보유통의 핵심기관으로 확성화시키고자 2000년부터 관계부처와의 역할 분담을 통해 공공 및 학교도서관 정보화기반 조성 및 도서관 소장자료의 디지털화(콘텐츠 확충) 등 '도서관정보화 종합계획'을 추진하고 있다. 계획수립은 한국문화정책개발원이 주도하여 도서관계 전문인사와 공동연구로 추진하고 자문위원단을 구성하여 계획의 기본방향 및 내용에 대한 각계의 의견을 수렴하게 되며, 문화관광부, 국립중앙도서관, 한국도서관협회 등이 지원기관으로 참여하여 정부정책으로 연계되어 그 활용성을 높이는데 주력할 계획이다. 이번 계획에서는 기본적으로 국립중앙도서관 및 공공도서관의 발전방안을 중심으로 학교 및 대학 도서관 부분에 대해서는 관계부처간 효과적인 정책협의체계 구축을 통한 정책적 지원부분에 초점을 두고 정보화 시대에 부응하는 도서관의 역할과 기능 재정립, 도서관 관종 간의 협력 프로그램 개발을 통한 도서관 운영활성화 등 도서관의 조직ㆍ기능ㆍ인력ㆍ프로그램 등의 측면에서 현황분석을 통한 문제점 도출과 개선방안을 마련, 궁극적으로는 도서관및독서진흥법 개정 등 도서관발전의 법ㆍ제도적 지원 토대를 마련할 방침이다. 한편 도서관정보화 부문에 대해서는 2003년부터 2단계 도서관정보화사업 추진을 위해 관계부처와 협력하여 현재 민간 컨설팅업체를 통해 추진중인「도서관 정보화전략계획(ISP)」을 종합계획에 반영할 계획이다. 또한 교육인적자원부를 중심으로 정부 6개 부처가 '학교도서관 활성화대책 기획단'을 구성하고 학교 및 대학도서관 발전 계획을 수립 중에 있다. 그리고 대통령자문 교육인적자원정책위원회에서 4월 3일 '도서관 정보인프라 활성화 방안'을 대통령에게 보고한 바 있다. 우리 「도서관문화」에서는 도서관 및 관련 부문의 각계 인사들에게 정부 「도서관 발전 종합계획」등 계획 수립에 바라는 바를 알아보았다.

• Environmental and Resource Economics Review
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• v.18 no.2
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• pp.173-190
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• 2009

Although renewable energy sources are more environmentally friendly than fossil energy sources, they are far more costly and hard to survive in the electricity market. For a competitive renewable electricity, the government should take 'visible' actions to compensate higher production costs. Popular policies, such as Feed-In-Tariff and Renewable Portfolio Standards, are financed by an undifferentiated increase of electricity bills (a collective financing mechanism) but are occasionally confronted with the opposition of the electricity consumers. This paper discusses the consumers' willingness to pay for renewable energy in order to back up the voluntary financing mechanism, the Green Pricing. The Tobit analysis of a consumer survey shows that the consumer's WTP is positively influenced by his environmentally friendly activities under both financing mechanisms. The knowledge on renewable energy is statistically significant only under collective financing mechanism.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2002.11a
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• pp.213-234
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• 2002

우리 나라는 70년대까지 광업은 부흥하였으나, 그 이후 급속히 위축되면서 80년대 이후 거의 대부분 광산들이 폐광 또는 휴광된 실정이다. 그 결과 현재 전국 각지에 다수의 폐갱도가 존재하게 되었으며, 이제는 지반침하 및 각종 침출수의 원인자로 간주될 정도이다. 최근 지자체에서는 이런 폐갱도를 지역 자원으로서 가치를 인정하고 지역 활성화를 위해 재 이용하려는 움직임이 보이고 있는데, 구체적으로는 관광시설, 연구시설, 농업생산시설, 저장시설, 폐기물처리시설 등이다. 일본은 폐광된 금속광산 재활용을 위해 입지여건과 주변지역, 입갱 가능성 등 기초조사를 하였다. 조사결과 폐갱도의 문제점으로 입갱이 가능한 광산이 적다는 점을 들 수 있다. 대부분의 광산은 갱구가 함몰되었거나, 갱내에 지하수가 차 있어 접근이 불가능한 경우가 대부분이다. 비교적 양호한 암반 경우는 서브 레벨 스토핑, 잔주, 주방식 등의 채굴법에 의해 대규모 공동이 잔존하고 있는 경우도 있지만 그리 많지 않았다. 폐광된 광산 재활용 여건은 우리 나라와 일본이 대동소이 경우로 현실적으로 활용이 가능한 폐광은 많지 않으며 활용코자 할 때에는 기존갱도를 활용하면서 암반이 견고한 곳에 새로운 갱도를 설치하여야 한다. 그러나 몇몇 곳에서는 매우 유용하게 잘 활용되고 있는 곳도 있고, 연구 검토하면 충분한 활용성이 있다고 생각되는 곳도 있다. 그러므로 현재의 상황을 보고 판단할 것이 아니라, 활용기술과 접목해서 활용성을 검토함으로써 불용 자산의 유용화 방안이 검토되어야 할 것이다. 현재 가행중인 광산은 입지여건 및 암반이 양호하고, 대형갱도를 굴착하는 석회석광산 등을 선택하여 폐광 후 활용이 가능토록 채광기술 발전시켜 나가야 하며, 인간 중심적인 시설 또는 산물 중심적인 시설로 구분하여 폐광 후 복구비용을 우선 지원하는 방식 등을 통하여 시추, 탐광굴진, 현대화, 수갱굴착, 자금융자 등을 지원하는 우리 공사와 산업자원부가 지자체, 산림청, 건교부, 농림부 등과 연계하여 종합적인 지원육성책을 마련하여야 할 것이다. 결과적으로, 지방자치단체 등에서 관심을 갖고 있는 저장시설, 폐기물처리시설, 관광시설, 농업생산시설, 연구시설 등을 중심으로 ＆apos;광산 채굴적을 미래에 어떻게 활용한 것인가＆apos;를 선진외국 사례를 벤치마킹하고, 연구ㆍ검토하여 친환경적인 광산개발이 되도록 기본적인 방향과 개념을 갖도록 하여 관련 정책을 계획적이고, 체계적으로 수립 일관성 있게 추진해 나가야 할 것이다.