• Journal of Gifted/Talented Education
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• v.11 no.3
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• pp.69-84
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• 2001

Present paper describes on the development of a new virtual program for science learning, and an exploration of it's application to science education. In addition, the method of teaching and loaming activities for science is suggested. The new type program is called Science Cyber Conference(that is Shimpark's Ssacon). It is developed to improve the abilities of inquiry and the scientific reasoning by planning on the investigation, arranging the data, synthesizing the results, and concluding and presenting one's opinions. On cyber environment, discussing about and communicating opinions and data investigated, are performed for special topic through chatting room, discussing room and electronic mailing, and totally synthesis and discussion about special inquiry topic at cyber conference day.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.41-53
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• 2017

This study focuses on the current state of Smart Grid policy in Japan and its problems while the interest in Smart Grid has been increasing since the March 2011 earthquake in East Japan. As a result of the analysis, Japan introduced the fixed price buying system of new and renewable energy in response to the power supply and demand problem caused by the 2011 earthquake in East Japan, and established a decentralized green electricity trading market in which electricity generated from new and renewable energy is traded Smart Grid-related projects were implemented as a solution to solve energy crisis and environmental problems at the same time. As a result, we achieved visible results such as suppressing peak power, reducing CO2 emissions, and securing stable supply and demand of energy using renewable energy sources. On the other hand, the improvement of current Smart Grid policy operation in Japan and the introduction of stabilization system of power system, promotion of international standards of domestic technology related to smart grid, and support for strengthening security of smart grid.

• Information and Communications Magazine
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• v.30 no.7
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• pp.58-62
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• 2013

최근에 ICT 기반의 융합 서비스 분야로 인구 밀집지역인 메가 시티에서의 교통, 전력, 상/하수도, u-헬스, 안전/보안등의 문제들을 근본적으로 해결하기 위하여 ICT기반 개방형 플랫폼을 이용한 서비스 인프라 구축 및 개선을 위한 연구들이 많이 진행되고 있다. 이러한 ICT 기반의 융합 인프라 구축 서비스들은 M2M(Machine to Machine)과 D2D(Device to Device)를 기본 연결 수단으로 사용하고 있으며, 이들을 기반으로 서비스 정보 전달 및 제어 정보를 실시간으로 처리하기 위한 IP 기반의 플랫폼이 지원되어야만 융합 서비스가 지속적으로 제공 가능할 것이다. 이들 융합서비스 중에서 전력과 관련하여 한국의 스마트그리드 사업은 기후 변화 대응을 위하여CO2 배출을 줄이고, 에너지 효율을 향상하여 새로운 비즈니스 모델을 만들어 일자리와 신산업을 창출하기 위한 국가 프로젝트로 진행되었다. 그러나, 현재의 전력관련 국내 상황을 살펴보면 여름철과 겨울철에 반복적인 전력 수급 불안으로 인해 피크 전력에 대한 예비력이 부족하여 국가적인 재난인 블랙 아웃의 위기를 걱정하고 있는 실정이다. 본고에서는 한국의 스마트그리드 제주실증단지 사업과 관련하여 현황 및 개선 사항들을 알아보고, 향후 거점지구와 국가 단위의 서비스 확장을 위하여ICT 기반의 개방형 인프라 플랫폼 기술의 중요성을 강조하고자 한다. 이러한 M2M과 D2D를 기반으로 하는 융합 서비스의 성공적인 수행은ICT 기반의 개방형 플랫폼의 우선적인 개발이 필요하며, 플랫폼 기반의 디바이스 보급과 네트워크의 구축이 진행되어야 지속 가능한 융합 서비스를 제공할 수 있을 것이다.

• Journal of Technology Innovation
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• v.24 no.4
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• pp.55-99
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• 2016

The paper investigates X-project, in which the public was invited to participate in a national R&D project, examines how X-project attracted the public's attention and involved them in a national R&D project, and discusses the significance and limitations of X-project. X-project was executed by a 12 citizen-led committee, financially supported by the Ministry of Science, ICT, and Future Planning, and backed by the Science and Technology Policy Institute. People raised 6,212 questions that reflected the severe needs they experienced in their daily lives through the online and offline platforms of X-project. In addition, the committee members, scholars, experts, government officials, and citizens gathered together to select the fifty most provocative and novel of the questions raised by the public, and invited public participation to answer the questions in innovative ways. 310 research teams including professional researchers from universities and institutes, high-school students, lay persons, and corporate workers applied for X-project, and 54 of these teams were finally selected to receive funding from the government. Through planning and conducting X-project, as well as interviewing and surveying the participants in X-project and non-participants, we found that there was an enormous social consensus on the necessity of public participatory national R&D projects. People asserted that science and technology should put a greater focus on solving social problems and satisfying public needs. We also confirmed that the public could take part in national R&D projects. Most of all, we found that the questions raised by the public were very challenging, novel, and complex, and thus researchers need break-through approaches to address them. It can be also argued that through experiencing the X-project citizens can regard themselves as ones who are not only recipients of the benefits of the development of science and technology, but also contributors of the development of them. We finally argue that there are some limitations to X-project in terms of how to provide diverse incentives that attract more participation, how to develop the process in which people got involved in the project in more easy ways, and how to create new ways for lay persons and professional researchers to cooperate in solving social problems.

• 한국IT서비스학회:학술대회논문집
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• 2008.11a
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• pp.547-550
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• 2008

이 논문은 유비쿼터스 환경을 고려하여 실제 프로젝트를 통해 신재생에너지시스템을 개발한 사례를 토대로 기술하였다. 20세기 초까지 인류의 중요 에너지 자원은 석탄이었으나 곧 석유와 천연가스에 의한 유체(流體) 에너지로 대체되었다. 이 논문에서는 현재 심각한 문제를 안고 있는 지구 온난화와 그 주원인인 화석 연료 사용에 대해 논의 하였고 그 해결 방안으로 태양열을 비롯한 여러 대체 사업을 제시하였다. 태양열 발전이 미래지향적이고 무공해, 무한한 에너지인 것만은 사실이지만 에너지 밀도가 낮고 생산의 기후적 영향을 많이 받는다. 또 계속적인 수요에 대해 안정적 공급이 어렵다는 단점을 안고 있다. 그렇기에 한국형 지리에 적합하고 기후에 맞게끔 지속적으로 설계 고안하여 고유가, 온난화에 대비해야 할 것이다.

• Review of KIISC
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• v.28 no.3
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• pp.38-46
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• 2018

블록체인 기술은 분산형 네트워크를 통해 정보 등을 관리하고 저장함으로써 정보의 투명성 및 신뢰성을 제공해줄 수 있는 분산 컴퓨팅 기반의 데이터 위변조 방지 기술이다. 특히 수천만개 사물 기기들이 서로 통신을 하여 서비스를 제공하는 사물인터넷(IoT) 서비스 환경에서 블록체인 기술은 중앙 집중 방식의 관리 구조를 탈피하고 보안성을 향상시킬 수 있는 인프라 기술로 주목 받고 있다. IoT 서비스에 데이터 무결성 및 디바이스 제어 등의 보안서비스를 제공하고, 분산화된 방식으로 서비스의 확장성을 높이고자 최근 글로벌 기업들은 IoT 블록체인 개발을 위한 컨소시엄을 구성하여, IoT 서비스에 활용할 수 있는 블록체인 기반 기술들을 연구하고 있다. 본 논문에서는 블록체인을 기반으로 한 IoT 연구 프로젝트들의 연구기술 동향을 분석하고, IoT 서비스에 블록체인을 적용한 사례와 응용 기술 등을 소개한다. 또한 IoT 응용 서비스에 효과적으로 적용하기 위해 기존 블록체인 기법들의 확장성 및 오버헤드 등의 문제를 개선한 Tangle 기술에 대해서 자세히 소개하고, IoT에 블록체인을 적용하기 위한 고려사항들을 논의한다.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.88-90
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• 2004

현재 우리군은 900럴개의 크고 작은 정보체계가 각기 독립적(stand-alone)으로 운영되는 연통형정보체계로 단위 정보체계 각각은 효과적으로 운영되지만 정보체계 간 상호연계에 많은 어려움을 겪고 있다. 이러한 상호연동문제 해결방안 중 하나로 이기종 시스템 간 상호운영 표준기술로 웹서비스의 도입방안을 연구하였다. 민간분야의 웹서비스 추진전략은 국방도메인이 요구하는 웹서비스 추진전략과는 서로 상충되는 면이 존재한다. 이에 국방분야의 특수성을 고려한 웹서비스 신기술을 도입 시, 표준화되고 빠르고 안정적인 국방 웹서비스 프로젝트진행을 위한 기반환경구축을 목표로 국방 웹서비스 프레임워크 모델개발을 추진 중에 있다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.763-766
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• 2008

The success of a construction project depends on efficient construction supply chain and service informationalization as types and quantities of materials in construction industry geometrically increase because the size of the construction industry increasingly becomes huge, high-rise, and complex. However, the omission of data for each step and the lower effect occurs because of uncertainty and inaccuracy of information as compared to other industries. In addition, it takes many hours to manage the present material states. Currently, IT technology and various mobile devices are being developed through the automation system of next generation intelligent construction supply chain management for the effective supply chain information management but the confusion regarding the recognition and transmission of the supply chain information between the multiple materials and transportation equipment using the IT and wireless network technology occurred. Therefore, the objective of this study is to propose the recognition mechanism which can deduce processes which caused the confusion of the recognition and transmission with supply chain information and solve the problems originated from the processes so as to solve the problems related to the confirmation and the communication of the correct supply chain information.

• Korean Journal of Construction Engineering and Management
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• v.14 no.5
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• pp.74-83
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• 2013

Most current BIM systems are focused on the visual information of work status in the design and construction stages. In a passive BIM system, 3D CAD tool can visualize the interference elements of design drawings, however, it cannot suggest a solution to solve the interference status. And 4D CAD tool in the construction stage can simulate the appearance of each activity by construction schedule, however, it cannot suggest an optimized schedule plan considering specified schedule condition of the project. Recently, many organizations need BIM solutions that can improve the work status beyond the level of simple visual information from BIM system. Active BIM system can provide the solutions to the project manager. This study suggests active BIM functions for the solutions and attempts to develop a 4D CAD engine to validate the usability of the functions.

• Journal of Elementary Mathematics Education in Korea
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• v.9 no.1
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• pp.65-84
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• 2005

The purpose of this study was to analyze the contents and designs of the developed 22 teaching and programs for the gifted students in elementary mathematics. The focus of the analysis were the participants and the characteristics of the contents, and were to reflect them on the areas of the 7th elementary mathematics curriculum and Renzulli's Enrichment Triad Model. The results of the study as follows: First, the programs for the low grade gifted students are very few compared to those of the high grade students. For earlier development of the young gifted students, we need to develop more programs for the young gifted students. Second, there are many programs in the area of geometry, whereas few programs are developed in the area of measurement. We need to develop programs in the various areas such as measurement, probability and statistics, and patterns and representations. Third, most programs do not follow the steps of the Renzulli's Enrichment Triad Model, and the frequency of appearance of the steps are the 1st, 2nd, and 3rd enrichments, sequentially. We need to develop hierarchical programs in which the sequency and relations are well orchestrated. Fourth, the frequency of appearance is as follows as sequentially: types of exploration of topics, creative problem solving, using materials, project types, and types of games and puzzles. In the development of structure of the program, the following factors should be considered: name of the chapter, overview of the chapter, objectives, contents by steps, evaluation, reading materials, and extra materials.