• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2004년도 Proceedings of the 4th Korea-China Joint Workshop on Nuclear Waste Management
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• pp.150-164
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• 2004

According to the Korean long-term plan for nuclear technology development, KAERI is conducting a few R&D projects related to the proliferation-resistant back-end fuel cycle. The R&D activities for the back-end fuel cycle are reviewed in this work, especially focusing on the study of the partitioning and transmutation(P&T) of long-lived radionuclides. The P&T study is currently being carried out in order to develop key technologies in the areas of partitioning and transmutation. The partitioning study is based on the development of pyroprocessing such as electrorefining and electrowinning because they can be adopted as proliferation-resistant technologies in the fuel cycle. In this study, various behaviors of the electrodeposition of uranium and rare earth elements in the LiCl-KCl electrorefining system have been examined through fundamental experimental work. As for the transmutation system, KAERI is studying the HYPER (HYbrid Power Extraction Reactor), a kind of subcritical reactor which will be connected with a proton accelerator. Up to now, a conceptual study has been carried out for the major elemental systems of the subcritical reactor such as core, transuranic fuel, long-lived fission product target, and the Pb-Bi cooling system, etc. In order to enhance the transmutation efficiency of the transuranic elements as well as to strengthen the reactor safety, the reactor core was optimized by determining its most suitable subcriticality, the ratio of height/diameter, and by introducing the concepts of optimum core configuration with a transuranic enrichment as well as a scattered reloading of the fuel assemblies.

• 한국IT서비스학회지
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• 제16권2호
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• pp.1-20
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• 2017

A bitcoin-based technology named blockchain is garnering attention in various industries as a cost-effective measure in strengthening security and a reliable technology medium. Blockchain technology will play a critical role in the Fourth Industrial Revolution, and IT technology is expected to bring fundamental changes. This study focuses on the characteristics of blockchain technology and the effects of the intention to accept its technology in an empirical manner. The aspects of the technology are organized by researching blockchain technology and theories of technology acceptability and previous studies were used as guidelines to create the research model and propose the hypothesis. The research model is based on UTAUT with a set-up of 5 factors for performance expectancy and effort expectancy. For empirical analysis, a survey was conducted on 283 IT workers in Korea, To examine the hypothesis structural equation modeling was used performance expectancy was influenced by security, reliability, diversity, and economic efficiency while effort expectancy was influenced by reliability and economic efficiency. Performance expectancy, social influence, facilitating conditions affect the intention to accept. Innovativeness of an organization and control effects are influenced as well. The present study aims to provide practical guidance as supplementary research in utilizing blockchain technology, and the limitations of the study and future research possibilities are discussed as well.

• 한국전자파학회논문지
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• 제27권11호
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• pp.959-971
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• 2016

초연결사회란 인간과 인간, 인간과 기기, 기기와 기기 간이 시간과 공간을 초월하여 네트워킹할 수 있는 사회를 의미하며, 전파통신 서비스를 제공하는 전파자원의 확충이 매우 시급한 과제로 떠올랐다. 최근 이를 대비하기 위해 전파법이 개정되었으나, 면허 불요대역의 과감한 확충, 주파수 용도 자유화의 실현 그리고 주파수 부여와 무선국 허가가 별도로 되어 있는 현행 법체계를 합리적으로 개선하는 노력이 필요하다. 따라서 본 논문은 효율적인 미래 전파서비스를 위한 전파법 개정안을 제안하고자 한다.

• 한국IT서비스학회지
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• 제15권4호
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• pp.153-174
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• 2016

On account of multiple causes, including prolonged global economic crisis, addressing environmental pollution and the advent of hyper-connected society, a new paradigm called 'sharing economy' has rapidly emerged. Many startups have attempted to build promising business model based on the sharing economy concept. Nevertheless, successful cases are still very rare in the global level, except for Uber and Airbnb cases. Therefore, this study analyzes necessary causes and sufficient causes for successful settlements in the market through a comparative case analysis on digital matching firms in the sharing economy businesses. For the case study, we compare five successful cases (Uber, Airbnb, Kickstarter, TaskRabbit and DogVacay), three failure cases (Homejoy, Ridejoy and Tuterspree) and a platform cooperativism case (Juno) in accordance with six value attributes of business model including value proposition, market segment, value chain, cost structure and profit potential, value network and competitive strategy. We apply Boolean method to support controlled comparison and eliminate unnecessary attributes. The Boolean analysis result shows that value proposition, cost structure and profit potential, value network and competitive strategy are the essential attributes. Furthermore, the result indicates that each attribute is a necessary condition, where all four conditions should be met simultaneously in order to be successful. With this result, we discuss essential consideration for those who are planning startup based on the sharing economy business model.

• 한국IT서비스학회지
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• 제18권4호
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• pp.97-113
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• 2019

With the development of sensor, communication and intelligent software technology, expectation of IoT-based service which can receive desired service automatically and anytime, anywhere is getting higher. In addition, IoT-based services have begun to anticipate the development of a hyper-connected society. Despite these expectations and anticipations, few studies have empirically identified ways to improve the intentions of prospective customers to use IoT-based services. Therefore, the purpose of this paper is to propose a theoretical model that can explain the factors that determine the intention of using IoT-based services. In addition, this study investigates what factors affect the intention to use IoT-based services focusing on the connectedness. Especially, perceived connectivity with the (virtual) community, unlike the connectivity with the machines, is newly proposed, to understand the IoT technology adoption behavior. The empirical results suggest that social relationship is one of the critical factors to affect the use of services running on interconnected technology such as IoT. When IoT-based service is recognized as a link to other communities, it has been found to have a positive effect on intention to use via perceived belongingness.

• 한국컴퓨터정보학회논문지
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• 제25권4호
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• pp.105-112
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• 2020

초연결, 지능화로 대표되는 4차 산업혁명에서 클라우드컴퓨팅은 빅데이터와 인공지능 기술을 실현하기 위한 기술로 주목받고 있다. 클라우드컴퓨팅이 확산됨에 따라 이에 대한 다양한 위협 또한 증가하고 있다. 클라우드컴퓨팅 환경의 위협에 대응하기 위한 하나의 방법으로 본 논문에서는 IaaS 서비스 제공자가 클라이언트에게 할당한 자원에 대해 효과적인 모니터링 할 수 있는 방법을 제안한다. 본 논문에서 제안하는 방법은 할당된 클라우드 자원의 사용량을 ARIMA 알고리즘으로 모델링 하고, 평시 사용량과 추이 분석을 통해 비정상 상황을 식별할 수 있는 방법이다. 본 논문에서는 실험을 통해 제안한 방법을 이용하여 클라우드 서비스 제공자가 클라이언트 시스템에 대한 최소한의 권한으로 효과적으로 모니터링 할 수 있음을 보였다.

• Journal of Platform Technology
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• 제9권3호
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• pp.18-23
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• 2021

초연결사회로 발전됨에 따라 정보통신의 역할이 크게 증대되고 통신재난이 발생할 경우 사회 인프라, 국가핵심기반의 서비스 중단 및 국민생활에 지대한 영향을 초래한다. 또한 정보통신분야는 산업구조가 고도화되면서 이에 대한 의존도가 급격히 증대하였기 때문에 재난으로부터 안전한 정보통신 환경 조성을 위해서는 체계적인 관리가 필요하다. 본 논문에서는 체계적인 관리를 위해서 정보통신, 금융, 보건 및 의료 등 국가핵심기반 및 다양한 분야에서 중요한 역할을 수행하고 있는 정보통신인프라에 발생할 수 있는 재난의 유형 및 위험에 대하여 분석하였다. 정보통신인프라에 재난이 발생할 경우 국가핵심기반의 서비스 중단 및 국민생활에 지대한 영향을 초래할 것으로 사료된다.

• 품질경영학회지
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• 제48권4호
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• pp.553-566
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• 2020

Purpose: The purpose of this study was to design a framework for generating one-class classification algorithm based on Hyper-Rectangle(H-RTGL) in a distributed environment connected by network. Methods: At first, we devised one-class classifier based on H-RTGL which can be performed by distributed computing nodes considering model and data parallelism. Then, we also designed facilitating components for execution of distributed processing. In the end, we validate both effectiveness and efficiency of the classifier obtained from the proposed framework by a numerical experiment using data set obtained from UCI machine learning repository. Results: We designed distributed processing framework capable of one-class classification based on H-RTGL in distributed environment consisting of physically separated computing nodes. It includes components for implementation of model and data parallelism, which enables distributed generation of classifier. From a numerical experiment, we could observe that there was no significant change of classification performance assessed by statistical test and elapsed time was reduced due to application of distributed processing in dataset with considerable size. Conclusion: Based on such result, we can conclude that application of distributed processing for generating classifier can preserve classification performance and it can improve the efficiency of classification algorithms. In addition, we suggested an idea for future research directions of this paper as well as limitation of our work.

• 한국중재학회지:중재연구
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• 제32권1호
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• pp.3-24
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• 2022

Today's society appears to be entering a hyper-connected society due to mental notions and information communication technologies being converged for advanced development. Trade between countries around the world is increasing amidst the digital economy and fourth industrial revolution, which is being accompanied by a growing number of trade disputes. Appropriately resolving disputes is crucial for corporate growth, and ADR is drawing attention as a more reasonable solution between interested parties compared to lawsuits. This also applies to international trade as there is growing movements to resolve disputes between parties more efficiently and feasibly through mediation. The adaptation of an international convention for implementation in a third country for settlement agreements drawn up through such international mediation is a new and unprecedented attempt. In other words, the Singapore Convention on Mediation looks to resolve international commercial disputes by granting executive force on the outcomes of mediations. However, a system to solve various legal issues must be put into place to execute the outcomes in the respective country or third country, and a variety of tools for this are necessary.

• 한국정보통신학회논문지
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• 제19권11호
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• pp.2724-2730
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• 2015

사물인터넷은 오늘날 기술 주기에서 가장 널리 논의되고 있고 있는 기술적 개념이다. 이러한 기술은 우리가 어떻게 일을 하는지 뿐만 아니라 어떻게 사는지에 대한 급진적 변화를 예측할 수 있다. IoT의 개념은 기본적으로 데이터 네트워크를 통해 컨트롤 할 수 있는 연결된 장치의 웹을 의미한다. 이와 같은 장치들을 컨트롤하기 위해 요구되는 기술 비용과 스마트폰을 통한 인터넷의 연결의 증가로 IoT는 향후 10년 안에 모든 퍼베이시브 기술이 될 것으로 예상된다. 본 논문에서는 지식재산권(특허)의 관점에서 빠르게 성장하는 기술 도메인의 기술적 요소들을 살펴본다. IoT 기술의 특허 분포에서 전체 특허들의 5%가 상위 특허 출원인이고 나머지는 다수의 출원인이 차지하고 있다. 특히, 미국지역에 가장 많이 출원하고 있고, 이것은 한국과 일본의 큰 아시안 시장과 밀접한 관계가 있다.