• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.4
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• pp.987-997
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• 2018

Blockchain has tamper-free, so many applications are developing to leverage tamper-free features of blockchain. MIT Media Labs proposed BlockCerts, educational certificate blockchain System, to solve problems of legacy certificate verifications. Existing educational certificate blockchain Systems are based on public blockchain such as bitcoin, Ethereum, so any entity can participate educational institute in principal. Moreover, the exisitng educational certricate blockchain system utilizes the integrity of blockchain, but the confidentiality of the educational certificate is not provided. This paper propose a digital certificate system based on private blockchain, name HyperCerts. Therefore, only trusted entity can participate in the private blockchain network, Hyperledger, as the issuer of digital certificate. Furthermore, the practical byzantine fault tolerance is used as consensus algorithm, HyperCerts reduce dramatically the latency of issuing digital certificate and required computing power. HyperCerts stores the hash value of digital certificate into the ledger, so breach of personal information by malicious entity in the private blockchain is protected.

• The Journal of the Convergence on Culture Technology
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• v.4 no.4
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• pp.31-36
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• 2018

The tourism industry has a great influence on national economy activation. The development of IT technology has enabled the collection and analysis of personal profile information, location information and activity information based on the characteristics, behavior, purchase propensity and interest of tourists. In order to realize this, the implementation of convergence smart tourism information service platform is completed by developing business model, IoT & Big Data integration management system, big data algorithm development and analysis platform in three stages. The underlying technology of the platform and algorithm needs a process of adopting open source, expanding the service element on the basis of it, and then complementing the problem through the test-bed demonstration test that connects the area. Using this platform, it is possible to develop a smart tourism environment that can provide customized services for each tourist by analyzing various information in an integrated manner. Also, it will be possible to improve the life of tourist destination residents and contribute to regional revitalization and job creation through the creation of smart tourism ecosystem focused on the region.

• The Journal of the Korea Contents Association
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• v.18 no.2
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• pp.188-199
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• 2018

The purpose of this study is to grasp the type of network activity and corporate competency based on network theory and to compare and analyze the relationship between these characteristics and business performance. The results showed that the frequency, importance, and reliability of CEO's had a positive (+) effect on business performance, and the mediating effect of corporate competency (industrial information competency, opportunity capture competency, strategic flexibility, and transaction cost reduction) appeared. This study tried to measure business performance by including corporate competency as a direct performance variable of CEO's network activity and found that it is desirable to focus on interacting with the most important network sources and to make efforts to strengthen the qualitative characteristics of network activities rather than expanding the scope of the network in order to improve the performance of CEO's Network Activity.

• The Journal of the Korea Contents Association
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• v.21 no.10
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• pp.127-137
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• 2021

YouTube beauty content channels that utilize various topics and formats are undergoing quantitative and qualitative expansion. This study selected the top five channels represeting major domestic and foreign beauty brands, fashion magazines and beauty influencers through Statista and conducted a case study focusing on them. It will connect to a strategy for increasing beauty-related content by comparing content characteristics according to content producers. Also, it will help to reveal what types of content will be appealing more attractive to consumer. The result has shown that the growth of YouTube platforms has transformed passive consumers into new communicators by diversifying sources of product information. In addition, as content of different type was consumed by different producers, producer-oriented content was produced rather than objective journalistic gaze. Therefore, it was found that the delivery of 'brand values' that can strengthen the relationship between consumers and brands along with various entertainment elements that are effective for millennial in the future.

• Journal of the Korea Society of Computer and Information
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• v.18 no.9
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• pp.111-120
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• 2013

Uncertainty in Context-aware computing is mainly a consequence of the complexity of context acquisition mechanisms and context processing. The presence of uncertainty may harm the users' confidence in the application, rendering it useless. This paper describes a three-phase strategy to manage uncertainty by identifying its possible sources, representing uncertain information, and determining how to proceed, once uncertain context is detected. The level of effort that is necessary to eliminate the uncertainty of context information affects the reliability of the system, because Sensor network system have no intervention of humans. In this paper, We applied proposed method to the development for the sensor network system, Uncertainty management can be applied a part of the system development life-cycle. It confirmed that result of testing show that detection performance is stable.

• Proceedings of the Technology Innovation Conference
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• 2009.02a
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• pp.231-244
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• 2009

21세기의 나노기술은 국가경쟁력을 위한 핵심 학문과 기술로 대두되었다. 우리나라는 2001년 7월에 '나노기술종합발전계획'을 수립하였고, 2002년 12월에는 '나노기술개발측진법'을 제정하여 국가의 전략기술로 범정부 차원에서 집중 투자하고 있음. 그 주요 내용으로 연구개발과 인프라 구축과 인력양성 등을 3대 핵심 과제로 추진하고 있다. 나노기술은 학문간, 기술간 및 산업 분야간 서로의 영역을 공유하는 다학제적 특성을 내포하고 있는 기술로서 미래의 기술혁신을 주도할 것으로 전망되고 있다. 또한, IT, BT, ET 등 신산업과 부품, 소재 등 기존 산업의 핵심 기술을 제공할 수 있는 기반기술로서 원천기술적 성격을 동시에 갖고 있다. 그동안 국내 나노기술 인력양성에 관한 조사 또는 연구는 매년 일부 수행되어 왔으나 나노기술 인력양성의 효과적 정책수립을 위한 보다 체계적이고 심층적인 조사와 분석에는 미흡했던 것으로 판단된다. 따라서 본 연구는 직접 설문을 통해 국내 나노기술 수요업체의 실태와 인력수요 현황을 조사, 분석하고 이를 바탕으로 나노기술의 세부 분야별 향후 인력 수요 전망을 통계적으로 예측한 후 해당 산업의 발전에 비칠 수 있는 영향을 분석하여 나노기술 인력 양성 정책 개발에 기반이 될 수 있는 정보의 제공을 목적으로 한다. 본 연구의 결과는 다음과 같은 내용을 포함한다. - 나노기술 수요 업체의 특징 및 현황 - 나노기술 수요 업체의 인력 상황 및 미래 계획에 대한 설문 결과 - 설문 결과의 통계적 분석 및 이를 기반으로 하는 미래 상황 예측

• Journal of KIISE:Computer Systems and Theory
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• v.31 no.3_4
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• pp.152-159
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• 2004

The Grid system is an emerging computing infrastructure that will substitute for existing distributed systems. However end users have a difficulty in using the Grid because of its complicated usage, which is an inherent characteristic from the heterogeneous mechanism of the Grid. In this paper, we present the JCML(Job Control Markup Language) and its GUI-based editor, which not only provide users with ease of use, improved working environment, but assist users to execute their jobs efficiently The JCML is a job control language that improves the RSL of Globus, which defines global services in Grid. The JCML is designed to support flexibility among various Grid services using standard XML. And it makes use of a graph representation method, GXL(Graph eXchange Language), to specify detailed job properties and dependencies among jobs using nodes and edges. The JCML editor provides users with GUI-based interface. With the JCML editor, a complicated job order can be easily completed using very simple manipulations with a mouse, such as a drag-and-drop.

• Management & Information Systems Review
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• v.32 no.2
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• pp.107-135
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• 2013

Today, the consumer complaining behavior is recognized as a valuable source of marketing information in the company. Therefore, studies on the factors that lead to consumer complaints have been done. In the previous research on consumer complaining behavior, the factors influencing the complaining behavior was focused on the personal characteristics, but factors under company control was rarely identified. We try to identify factors under company's control that have a effect on the likelihood of success of complaining and complaining perceived costs. These factors are tendency to compensate emotionally, tendency to compensate materially, accessibility to complain, empowerment to manage complaint. Through empirical analysis, we proposed company's strategies to encourage consumer's complaint and gave theoretical and managerial implications.

• Journal of the Korea Society of Computer and Information
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• v.15 no.6
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• pp.121-128
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• 2010

Spatial data mining has been developed to support spatial association knowledge between spatial features or its non-spatial attributes for an application areas. At the present time, a number of researchers attempt to the data mining techniques apply to the several analysis areas, for examples, civil engineering, environmental, agricultural areas. Despite the efforts that, until such time as not existed practical systems for the gCRMDMs. gCRMDMs is merged with very large spatial database and CRM information system. Also, it is discovery the association rule for the predictions of customer's shopping pattern informations in a huge database consisted with spatial and non-spatial dataset. For this goal, gCRMDMs need spatial data mining techniques. But, nowadays, in a most case not exist utilizable model for the gCRMDMs. Therefore, in this paper, we proposed a practical gCRMDMs model to support a customer, store, street, building and geographical suited to the trade area.

• Journal of the Economic Geographical Society of Korea
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• v.8 no.1
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• pp.51-70
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• 2005

Knowledge has become a primary source of competitiveness, and knowledge workers, people whose jobs require formal and advanced schooling, are one of the fastest growing groups in workforce. With the rise of a knowledge-based economy, higher education has been increasingly emphasized in economic development. Colleges and universities have recently added translation of research into products and new enterprises to their educational functions while companies have increased their external links to keep pace with rapidly changing and increasingly complex business environments. These changes have strengthened the role of colleges and universities in industrial innovation which is a key to economic development. This research reviews characteristics of U.S. higher education and development of interactions between higher education institutions and companies in the U.S. The case of IT industries, where U.S. has a competitive edge, provides specific examples and implications. Four major routes of interactions between higher education institutions and companies are suggested to provide a research framework for future studies in this area.