• 한국전자거래학회지
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• 제17권1호
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• pp.111-136
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• 2012

세계적인 경제 불황으로 인해 기업의 IT 투자에 대한 부담이 커지고, 녹색 IT에 대한 관심 또한 증대되면서 클라우드 컴퓨팅은 IT 분야에서 전 세계적인 트렌드이자 패러다임이 되었다. 세계 각국의 정부, 기업, 연구소에서 클라우드에 대한 관심과 투자, 연구가 확대되고 있는 실정이며, 국내에서도 2009년부터 본격적인 클라우드 컴퓨팅에 대한 관심이 고조되고 있다. 하지만, 본 연구는 기업이 클라우드 컴퓨팅 서비스 도입에 영향을 미치는 클라우드 컴퓨팅의 특성 요인을 인식하고 관련 이론을 토대로 클라우드 컴퓨팅 서비스의 적극적 도입 및 활용을 위한 이론적 틀을 제시하고 이에 대한 인과관계를 검증하고자 수행 되었다. 연구모형에 포함된 클라우드 컴퓨팅의 특성 요인으로는 확장성, 민첩성, 보안성, 가용성, 효율성, 경제성, 종속성, 신뢰성을 선정하였고, 클라우드 컴퓨팅 서비스 유형의 조절효과를 검증하였다. 클라우드 컴퓨팅에 대한 지식을 보유하고 있고 기업의 IT 의사결정자 또는 의사결정지원자를 대상으로 설문하고 통계적으로 검증한 결과, 효율성, 경제성, 신뢰성 순으로 클라우드 컴퓨팅 서비스 도입에 영향을 미치고 있음을 알 수 있었다. 본 연구의 결과는 아직 연구 초기 단계에 있는 클라우드 컴퓨팅에 대해 고객의 시각에서 바라보고 클라우드 컴퓨팅의 특성에 대한 개념을 정리하여 잠재 고객이나 클라우드 컴퓨팅 서비스를 제공하는 기업, 연구자에게 이를 제공 가능할 것이다.

• 디지털융복합연구
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• 제16권3호
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• pp.201-210
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• 2018

한국산업인력공단이 운영하는 월드잡플러스는 청년들의 해외취업을 지원하는 포털 서비스로서 해외진출에 필요한 정보제공과 등록, 면접, 학습 등 일련의 과정을 지원하는 통합정보네트워크이다. 현재 30만명 이상의 청년들이 등록하고 있으며, 연계관련기관과 협업하여 청년들의 해외 취업을 지원한다. 월드잡플러스는 지원서비스의 혁신화와 무결성 유지를 위해 머신데이터 분석플랫폼인 스플렁크를 활용하여 웹사이트에 축적된 로그파일 분석을 시도하고 있다. 기술적 예측적 분석도구를 이용하여 구직자 니즈와 프로필 기반의 맞춤형 매칭 서비스를 제공하며 구직자를 위한 최적 구직 성공요건 및 최적 구인기업에 대한 정보를 제공한다. 본 논문에서는 월드잡플러스가 스플렁크를 활용하여 해외취업을 지원하는 몇 가지 서비스에 대한 사례를 제시해보고자 한다.

• 지식경영연구
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• 제18권1호
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• pp.83-116
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• 2017

The purpose of this study is to analyze empirically analyze how the characteristics of participants in educational and social learning forums and the quality of events influence expectations and satisfaction of forums. The study also aims to provide strategic implications for forum organizers and give them suggestions on how to set up target audience, manage forum contents, speakers, and services, improve attendee satisfaction, and ultimately maximize overall outcomes. As exchanges among individuals, enterprises, and organizations, as well as countries are growing rapidly, the convention industry has become a key player in the market. Conventions have also become a venue for people to discuss a specific agenda or topic, exchange information and learn knowledge and insights. Especially, the forum - as part of the convention industry - plays a vital role providing educational and social learning opportunities as scholars and expertise come together to share their knowledge and experience through a variety of discussions. With its role, many of forums are taking place in recent years; however, there have been few empirical studies upon the forum itself. Also, there have been few attempts to research how the quality of forums affect participants' satisfaction along with their characteristics and how much of practical knowledge is provided throughout the events. This study is meaningful in that it is the first practical study that takes a deep understanding of the forum and sees how the quality of the forums influences participants' satisfaction and whether the characteristics of participants have a moderating effect in increasing the level of satisfaction. Forum organizers could also take a strategic approach as their major concerns are to increase the number of participants and raise degree of satisfaction by providing significant information. There are four key elements that determine success or failure of a social learning forum. The four elements are contents, speakers, services, and participants. Content plays an important role in providing rich information and knowledge for participants. Speakers are the main knowledge providers who contribute to the forum's social learning role. Also, the services provided by forum organizers such as simultaneous interpretation services, program brochures, lunch and refreshments, and the overall design of event hall can also influence the level of participants' satisfaction. Lastly, the participants and their characteristics are important since they are the ones who receive knowledge from the providers. The results of this study show that the quality of forum (content, speaker, and services) has a decisive effect on the participants' satisfaction and there are some differences in expectation among the participants in the forum. Also, some groups of participants were more likely to be stimulated by the quality of forum when determining their satisfaction. The study is modeled after MBN Y Forum 2016 and its participants' characteristics. The forum is one of the most representative social learning forums of South Korea and its audiences are mostly young people. It has analyzed how the participants' characteristics influence their satisfaction by grouping them into ${\Delta}participants$ who have invited for free and those who paid for the entrance fee, ${\Delta}first-time$ participants and returning participants, ${\Delta}voluntary$ and involuntary participants, ${\Delta}participants$ who registered through web and those who did through mobile, and ${\Delta}participants$ who registered during pre-sale opens and those who registered during general opens.

• 한국IT서비스학회지
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• 제12권4호
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• pp.175-186
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• 2013

Among many automotive manufacturing processes, an assembly process has the smallest automatization percentage. As the correct assembly of the supplied components according to its specification is directly related with the quality of the final product, it is of the utmost importance to reduce the possible human errors in the assembly line. However, due to the lack of an effective verification system for an assembly line, currently, there is huge cost loss caused by the errors in seat assembly every year. Therefore, in this paper, to overcome the limit of the current verification method and to prevent the occurrence of assembly errors caused by mismatching assembling components or its specifications, a verification system and its method is proposed employing the RFID technology. The system is for automatic detection of the assembly errors, so that it can reduce the time and effort needed for verification and maximize the work efficiency. Also, by preventing the assembly errors in advance, the productivity can be increased through a quality innovation.

• 한국IT서비스학회지
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• 제12권4호
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• pp.307-318
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• 2013

This study developed the prevention education program of smartphone overuse for adolescents in middle school and testified its outcome. Finally the 4-session prevention education program for smartphone overuse was developed. 1st session was composed of psychoeducation about smartphone overuse and its side effect by quiz question. 2nd session smartphone addiction and brain change, 3rd session motivational enhancement program for smartphone overuse, 4th session cognitive behavioral program for it. The outcome was testified by internet addiction scale, smartphone addiction scale, and school adaptation scale for 2 classes of middle school students(experimental and control class). 2 Main results were as follows; First, the smartphone addiction total score and cyberworld orientation of the students participating in it were statistically significantly reduced. The difficulty of daily living and abstinence symptom due to smartphone overuse of them tended to reduce. Second, internet addiction total and all subscores of them were not changed. Third, class adaptation of them was statistically significantly increased and school adaptation total score and teacher adaptation of them tended to increase. Its meaning, implication and limitation were discussed.

• Journal of Electrical Engineering and Technology
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• 제9권6호
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• pp.1851-1863
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• 2014

Many countries are increasing their investments in smart grid technology to enhance energy efficiency, address climate change, and trigger a green energy revolution. In addition to these goals, Korea also seeks to promote national competitiveness, prepare for the growth of the renewable energy industry, and export industrialization through its strategic promotion of the smart grid. Given its inherent representativeness for Korean implementation of the smart grid and its growth potential, Jeju Island was selected by the Korean government as the site for smart grid testing in June 2009. This paper presents a new design for the electricity market and an operational scheme for testing Smart Electricity Services in the Jeju smart grid demonstration project. The Jeju smart grid test-bed electricity market is constructed on the basis of day-ahead and real-time markets to provide two-way electricity transaction environments. The experience of the test-bed market operation shows that the competitive electricity market can facilitate the smart grid deployment in Korea by allowing various demand side resources to be active market players.

• 한국IT서비스학회지
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• 제15권2호
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• pp.35-49
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• 2016

With the gradual development of IT technology, voice phishing victims are increasing in number. In the past when only voice phone calls were made, personal information or financial information were stolen mainly by a direct phone call, but recently, as smart phones are widely in use, it is evolving into a way such as smishing that leads an access to a site with malicious codes spreading out. Since it is easy to run away after committing a crime, and trace are rarely left in case of voice phishing, it is difficult to find out criminal. In addition, it is most likely that a victim be would be exposed to further damage from another voice phishing. Its technique is growing in kinds and turning more intelligent day by day; Therefore, its victims are increasing in number. Previous researches mainly focused the area of legal studies while the factors exposed to voice phishing have not been made. Therefore, this study has analyzed the motifs in which voice phishing is done to draw out its outcomes as follows. First, a victim comes to trust the criminal by the factors of favorability, rare message, and mutuality. Second, the more sophisticated the technique of a criminal, the more likely a victim is exposed to voice phishing.

• 대한간호학회지
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• 제28권1호
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• pp.210-220
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• 1998

The various and serious types of disaster occur everyday and everywhere on the earth. There is no doubt that it is very timely to discuss about the effectiveness and preparedness of disaster. The purpose of this study is to develop a curriculum on the disaster management through reviewing disaster concepts and the disaster management system. For the empirical relevance of the study, researchers participated in a couple or more disaster training program, reviewed references, and consulted to the experts working on action parts in the area. As a result, the 'Integrated Disaster Management System Model (IDMSM)' was designed, in which four dimensions were explained. Then the 'Disaster Curriculum Model (DCM)' was explored with its theoretical framework based on the system model. The developed curriculum is composed of four levels ; the introductory course, the fundamental course, the advanced course, and the expert course. From this DCM, basically the course-outlines of two subjects in the introductory course, 18 subjects in the fundamental course (5 of direct services. 13 of indirect services) were developed. Also each course-outline was explored by its course objective, learning objectives, contents, and its length. Finally to make the most of the results, suggestions are proposed. The governmental considerations on the policy should support the systematic and integrated educational program to practice, appointing 「Disaster School」 or 「Disaster Training Center」 of relevance and accountabilities. The further study should explore the higher levels of the DCM through interdisciplinary efforts, and develop the text aterials. ilities. The further study should explore the higher levels of the DCM through interdisciplinary efforts, and develop the text materials.

• Journal of Information Processing Systems
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• 제15권4호
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• pp.797-819
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• 2019

Internet of Things (IoT) is the paradigm of network of Internet-connected things as objects that constantly sense the physical world and share the data for further processing. At the core of IoT lies the early technology of radio frequency identification (RFID), which provides accurate location tracking of real-world objects. With its small size and convenience, RFID tags can be attached to everyday items such as books, clothes, furniture and the like as well as to animals, plants, and even humans. This phenomenon is the beginning of new applications and services for the industry and consumer market. IoT is regarded as a fourth industrial revolution because of its massive coverage of services around the world from smart homes to artificial intelligence-enabled smart driving cars, Internet-enabled medical equipment, etc. It is estimated that there will be several dozens of billions of IoT devices ready and operating until 2020 around the world. Despite the growing statistics, however, IoT has security vulnerabilities that must be addressed appropriately to avoid causing damage in the future. As such, we mention some fields of study as a future topic at the end of the survey. Consequently, in this comprehensive survey of IoT, we will cover the architecture of IoT with various layered models, security characteristics, potential applications, and related supporting technologies of IoT such as 5G, MEC, cloud, WSN, etc., including the economic perspective of IoT and its future directions.

• 한국IT서비스학회지
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• 제18권1호
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• pp.219-234
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• 2019

Fake news threaten democratic elections and causes social conflicts, resulting in major damage. However, the concept of fake news is hard to define, as there is a saying, "News is not fake, fake is not news." Fake news, however, has irreversible characteristics that can not be recovered or reversed completely through post-punishment of economic and political benefits. It is also rapidly spreading in the early days. Therefore, it is very important to preemptively detect these types of articles and prevent their blind proliferation. The existing countermeasures are focused on reporting fake news, raising the level of punishment, and the media & academia to determine the authenticity of the news. Researchers are also trying to determine the authenticity by analyzing its contents. Apart from the contents of fake news, determining the behavioral characteristics of the promoters and its qualities can help identify the possibility of having fake news in advance. The online community has a fake news interception and response tradition through its long-standing community-based activities. As a result, I attempted to model the fake news by analyzing the affirmation-denial analysis and posting behavior by securing the web board crawl of the 'M community' bulletin board during the 2017 Korean presidential election period. Random forest algorithm deemed significant. The results of this research will help counteract fake news and focus on preemptive blocking through behavioral analysis rather than post-judgment after semantic analysis.