• 한국ITS학회 논문지
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• 제22권5호
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• pp.127-136
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• 2023

경기도는 도민이 버스를 편리하게 이용하도록 버스 정보시스템을 구축하여 실시간 버스 도착 정보를 제공하고 있다. 경기도 버스 정보시스템은 IT기술에 힘입어 첨단화되어가고 있지만 이용하기 어려운 정보 취약계층이 있으며, 특히 고령층은 디지털 정보화 수준이 제일 낮고 이용이 어렵다. 이에 본 연구는 전문가 심층조사방법인 델파이기법을 활용해 고령층의 대중교통정보이용 격차를 해소하기 위한 방안을 마련하고자 하였다. 경기도가 추진해야 하는 정책을 이용자 교육 및 홍보확대, 기술개발 및 보급, 이용환경 편의 제공 3개 분야로 구분하여 10가지 세부과제에 대한 우선순위를 2차에 걸쳐 조사하였으며 항목별 효과성과 실현가능성을 함께 설문하였다. 그 결과 9개 과제의 우선순위와 효과성과 실현가능성의 평가결과를 얻었으며, 이를 토대로 경기도가 시행해야할 향후 고령층 정보격차 해소를 위한 사업을 제안하였다.

• 한국통신학회논문지
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• 제35권2B호
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• pp.252-262
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• 2010

USN(Ubiquitous Sensor Network) 기술은 최근 사회 전반적으로 급격히 진행되고 있는 디지털 컨버전스 트렌드의 한 모습으로 나타나고 있다. 다양한 USN 응용서비스에 대한 기술적인 실행 가능성은 다양한 산업에서 연구되고 있지만, 아직까지 농업분야에서의 USN 응용서비스 시장 및 기술 채택과 상업화는 지연되고 있는 실정이다. 유비쿼터스 농업 환경은 가축의 생장환경 및 농산물의 재배, 수확에 이르기까지 기존의 농업 환경에 많은 변화를 줄 수 있다. 본 논문에서 제안하는 u-돈사 통합관리 시스템에서는 조도, 습도, 온도, 암모니아 가스 등 돼지의 생육환경에 관련된 정보를 수집하는 USN 환경 센서와 CCTV를 양돈장 내 외부에 설치하고, 양돈장 환경을 모니터링한다. 이 시스템은 외부에서 양돈장 시설을 원격으로 제어하고 모니터링할 수 있을 뿐 아니라, 장기간에 얻어진 생육환경 데이터를 통하여 최적의 생육조건을 조성한다.

• 정보처리학회논문지C
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• 제16C권5호
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• pp.605-614
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• 2009

IP 멀티캐스트는 네트워크 자원을 효율적으로 사용할 수 있는 장점에도 불구하고, 관리도메인 간 정책적 이견 및 멀티캐스트 가용성과 도달성 등 기술적 문제로 인해 활용 확장에 한계를 가지고 있다. 멀티캐스트 오류 등 기술적 문제에 대한 탐지 및 차단은 IP 멀티캐스트의 안정화를 위해 우선적으로 해결되어야 할 과제이다. 본 논문은 네트워크와 네트워킹 환경에 대한 오류의 탐지 및 원인 추정이 가능하며, 효율적 활용 유지 확장을 위해 경편성(portability)과 관리성(manageability)을 갖춘 멀티캐스트 모니터링 프레임워크를 제안한다. 제안된 프레임워크는 IP 멀티캐스트의 가용성, 도달성 및 대화성의 탐지가 가능하며 백그라운드(background) 시험 및 요구형(on-demand) 오류 검증을 통해 네트워킹 환경의 성능 장애 요소들을 추정할 수 있다. 또한, 네트워크 자원을 효율적으로 활용함으로써 프레임워크의 확장성(scalability)을 제공한다. 네트워크 테스트베드에서 행해진 실험을 통해 제안된 프레임워크 확장성과 효용성을 입증한다.

• 환경정책연구
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• 제14권1호
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• pp.33-52
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• 2015

본 논문의 목적은 국가 로드맵 상에 제시된 7대 부문(산업, 수송, 건물, 공공, 농림어업, 폐기물, 전환)에 대한 부문별 감축 수단을 대상으로 향후 보다 발전적인 이행전략을 분석하는 것이다. AHP와 ANP 방법론을 활용해 방법론 간 차이점이 나타난 부문과 그렇지 않은 부문을 비교분석하였다. 감축대상인 7대 부문 대부분에서 이행목표로서 비용효율성과 효과성(기술개발, 감축성과)보다는 이행가능성이 상대적으로 중요한 것으로 분석되었다. 평가기준에서는 공공, 전환 부문에서 방법론에 따라 최우선순위가 바뀌었으며, 감축방안에 해당하는 대안의 우선순위 및 기준 관점의 대안 내 우선순위도 방법론에 따른 차이가 나타났다.

• Journal of Gastric Cancer
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• 제11권1호
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• pp.1-6
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• 2011

Gastric cancer is the most common malignancy and the incidence is steadily increasing in Korea. The principal treatment modality for gastric cancer is surgical extirpation of tumor along with draining lymph nodes. Gastrectomy with D2 lymph node dissection has been well established as a standard of surgery and improved the survival of gastric cancer patients. Recently, technological advances are drastically reshaping the landscape of surgical treatment of gastric cancer. One of the most notable trends is that minimal access surgery becomes dominating the treatment of early stage diseases. For advanced diseases, the standard access surgery is considered a reference treatment. Although there is a pilot study underway to evaluate the feasibility of the application of minimal access surgery to advanced gastric cancer (AGC), the evidence for oncological safety is not yet provided sufficiently. Based on the recent randomized controlled trials, the extent of surgery for AGC has re-defined as para-aortic lymph node dissection dose not add any survival benefit while increasing surgery-related morbidities. In addition, it is now accepted as a standard operation omitting unnecessary procedures such as splenectomy and/or distal pancreatectomy for prophylactic lymph node dissection. Conceptual and technical innovation has contributed to decreasing morbidity and mortality without impairing oncological safety. All these recent advances in the field of gastric cancer surgery would be concluded in maximizing therapeutic index for gastric cancer while improving quality of life.

• 유기물자원화
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• 제14권4호
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• pp.93-103
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• 2006

바이오가스는 유기물의 혐기소화과정에서 생기는 부산물로 열에너지와 전기에너지로 사용되어왔다. 바이오디젤생산의 반응물과 연료로 사용되고 있는 메탄올의 수요는 꾸준히 증가하고 있다. 본 총설에서는 메탄올을 메탄올로 전환하는 직접부분산화법의 최근 발전 동향을 간략한 메탄올합성의 역사와 함께 다루었으며, 산업 규모에서 주로 사용되고 있는 증기개질반응과 현재 연구단계에서 발전하고 있는 촉매산화법을 비교하였다. 이 총설에서는 바이오가스로부터 메탄올전환의 가능성이 기술적인 측면과 경제적 실용성 면에서 제시되었다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 추계학술대회 초록집
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• pp.75.1-75.1
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• 2011

Coal gasification is considered as one of the most prospective technologies in energy field since it can be utilized for various products such as electricity, SNG (Synthetic Natural Gas or Substitute Natural Gas) and other chemical products. Among those products from coal gasification, SNG is emerging as a very lucrative product due to the rising prices of oil and natural gas, especially in Asian countries. The process of SNG production is very similar to the conventional IGCC in that the overall process is highly dependent on the type of gasifier and coal rank. However, there are some differences between SNG production and IGCC, which is that SNG plant requires higher oxygen purity from oxygen plant and more complex gas cleanup processes including water-gas shift reaction and methanation. Water-gas shift reaction is one of the main process in SNG plant because it is a starting point for the latter gas cleanup processes. For the methanation process, syngas is required to have a composition of $H_2$/CO = 3. This study reviewed various considerations for water-gas shift process in a conceptual design on an early stage like a feasibility study for a real project. The factors that affect the design parameters of water-gas shift reaction include the coal properties, the type of gasifier, the overall thermal efficiency of the plant and so on. Water-gas shift reaction is a relatively proven technology compared to the other processes in SNG plant so that it can reduce technological variability when designing a SNG project.

• 한국국방경영분석학회지
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• 제29권1호
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• pp.88-111
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• 2003

This paper is to suggest strategic options for improving the export performance of the plant and construction industry. The overall objective of this study is to explore the feasibility of a sustained export performance in the plant and overseas construction industry by an analysis of its international competitiveness and technological competence. The empirical work of this study relates to a chosen sample of Korean and non-Korean firms in the plant and construction industry sector. Primary data was collected through a comprehensive questionnaire survey administered to plant and construction firms in twelve countries, including Korea. The actual number of firms for which full information at a sufficient level of disaggregation was obtained was 62, a response rate of 44.6％. Of these, 42 firms were drawn from Korean plant and construction firms and the remaining 20 firms from 11 other countries. The structure of responding firms by industry shows a total of 29 plant exporters and 33 construction firms. Data analysis was carried out using SPSS statistical technique such as Multiple Regression in order to examine the linear relationship among variables. The findings of the study indicate that export success and failure in plant and construction export markets is determined by firm size and by various qualitative variables. The high export volume (export success) of Plant and construction exporters is more strongly influenced by mutual economic cooperation and number of employees than by sales volume and competent knowledge of the plant and construction markets. It was also found that weak political and diplomatic relation between countries, low sales volume and lack of bid experience have an adverse effect and represent serious barriers to exports.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2005년도 춘계 학술대회
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• pp.56-66
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• 2005

In response to the increasing emphasis being placed on the importance of international cooperation as part of global efforts to cope with growing non proliferation, and security, concerns in the nuclear field, the Director General of the International Atomic Energy Agency (IAEA), Mohamed ElBaradei, appointed an international group of experts to consider possible multilateral approaches to the nuclear fuel cycle. The mandate of the Expert Group was three fold: ${\bullet}$ To identify and provide an analysis of issues and options relevant to multilateral approaches to the front and back ends of the nuclear fuel cycle; ${\bullet}$ To provide an overview of the policy, legal, security, economic, institutional and technological incentives and disincentives for cooperation in multilateral arrangements for the front and back ends of the nuclear fuel cycle; and ${\bullet}$ To provide a brief review of the historical and current experiences and analyses relating to multilateral fuel cycle arrangements relevant to the work of the Expert Group. The overall purpose was to assess MNAs in the framework of a double objective: strengthening the international nuclear non proliferation regime and making the peaceful uses of nuclear energy more economical and attractive. The Group identifies options for MNAs - options in terms of policy, institutional and legal factors - for those parts of the nuclear fuel cycle of greatest sensitivity from the point of view of proliferation risk. It also reflects the Groups deliberations on the corresponding benefits and disadvantages (pros and cons) of the various options and approaches. Although the Expert Group was able to agree to forward the resulting report to the Director General, it is important to note that the report does not reflect agreement by all of the experts on any of the options, nor a consensus assessment of their respective value. It is intended only to present options for MNAs, and to reflect on the range of considerations which could impact on the desirability and feasibility of those options.

• 한국컴퓨터정보학회논문지
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• 제21권8호
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• pp.127-141
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• 2016

With more emphasis on importance of software, many countries try to provide software education. Of course Korea includes informatics courses in 2015 revised curriculum, so that software education will be administered briskly in soon. However there are practical challenges including a lack of teaching hour in classes and the monotony of educational contents which occurs with that. To solve these problems, this research develop software education curriculum model that could be practically used for both middle and high school. First this study compare the curriculum of Korea to that of United States and United Kingdom. After analyzing the result, the curriculum model for middle and high school is developed. The curriculum model can be classified into three types, middle, high and advanced-high levels and include key concepts like collaboration and convergence, computational thinking, computing practice and programming, computers and communications devices, community, global, and ethical impacts. To assess the feasibility of our software education curriculum model, examination was made by expert group and a hearing was held by related researchers. Then the model was modified in a way that adjustable to Korea education system. This study provides some important guidances on designing a curriculum for software education at middle and high school. However, there still are difficulty adjusting to the elementary school and university course. To be able to further research, same kind of studies on elementary school and university course need to be done. Also, continuous modifications are required to reflect reality including technological advance, curriculum, and changes of education system.