• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.11a
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• pp.1015-1016
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• 2010

• Vending industry
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• v.1 no.4 s.4
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• pp.92-93
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• 2002

최근 2~3년간 부진을 면치 면치 못하는 슬러쉬 시장에 있어 새로운 시장 활성화의 기대를 머금게 하는 신제품이 등장했다. 이 신제품은 슬러쉬를 완전 자동화한 자동판매기 제품으로 신시장 창출 모델로서 큰 기대를 걸게 하고 있다. 그렇다면 과열 새롭게 등장한 슬러쉬자판기가 침체의 슬러쉬 시장에 있다 새로운 활력을 불러일으킬 수 있을까. 금호 집중 취재에서 그 가능성을 집중 취재해 봤다.

• Journal of Digital Convergence
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• v.10 no.1
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• pp.11-20
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• 2012

Recently, EA has been introduced in the Korean government as a tool for improving both IT management and IT investment. However, EA has been superficially used at the conceptual level without any efforts for facilitating it. As a result, it seems that any substantial outcomes from using EA could be hardly realized. This study suggests EA Service Model as a framework for facilitating the use of EA and then generating benefits. The purpose of EA Service Model is to provide a framework with which information and data can be linked, interconnected and shared in the whole process of IT management. It is expected that EA Service Model will possibly make a contribution to improving IT management. Empirical Analysis shows that key factors of EA Service Model make significant effects on improving the IT management, proving practical value and the validity of the model.

• International Commerce and Information Review
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• v.13 no.3
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• pp.249-274
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• 2011

This paper examines agri-food export competitiveness among 4 countries(Korea, USA, Japan, China) based on Porter's Diamond model approach. Korea agri-food competitiveness index is much less than those of other countries. Korea is the lowest ranked among the 4 countries in terms of three determinants(except 1 factor, related and supporting industries) of Porter's Diamond Model: Factor condition, demand condition, firm strategy, structure and rivalry. Korea is assumed to have weak point in the factor condition, demand condition because of low capital and land as well as insufficient investment on the agri-food sector. on the other hand, it seems to have strong factor in consumer condition(demand condition). This paper suggest the following strategies to reinforced the agri-food export sector in Korea. 1) an incentive system for seed development and capital investment, 2) a cluster strategy between agriculture and related industry.

• The Journal of the Korea Contents Association
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• v.11 no.1
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• pp.302-316
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• 2011

Despite steady economic growth of e-learning industry, manpower is lacking in e-learning industry. In this study, We developed a new e-learning business model including open market portal system to solve this problem. The existing e-learning business models required complicated procedure for creating contents. Therefore it took long time and great expense. But in this study we developed the business model with open market portal system, it can support to make easily for e-learning contents. We analysed usefulness our program and other popular programs with thirty lecturers. As a result of survey, usefulness of our system is presented. The study suggests differently the student-centered business model and the lecturer-centered business model than existing e-learning business model had the manufacturing company-centered business model and the services-centered business model. We anticipate the new business model invigorate the e-learning industry.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.3
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• pp.627-637
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• 2015

As game item trading becomes more popular with the rapid growth of online game market, the market for trading game items by cash has increased up to KRW 1.6 trillion. Thanks to this active market, it has been easy to turn these items and game money into real money. As a result, some malicious users have often attempted to steal other players' rare and valuable game items by using their account. Therefore, this study proposes a detection model through analysis on these account thieves' behavior in the Massive Multiuser Online Role Playing Game(MMORPG). In case of online game identity theft, the thieves engage in economic activities only with a goal of stealing game items and game money. In this pattern are found particular sequences such as item production, item sales and acquisition of game money. Based on this pattern, this study proposes a detection model. This detection model-based classification revealed 86 percent of accuracy. In addition, trading patterns when online game identity was stolen were analyzed in this study.

• The KIPS Transactions:PartC
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• v.12C no.2 s.98
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• pp.169-174
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• 2005

Electronic signature system is required to be used in the promotion of the e-Commerce. Because the application system for electronic signature system has inconvenience and vulnerability of security, users are reluctant to use it. Therefore, the electronic signature system should give a guarantee of convenience and security. In this paper, we propose server-based application model, which uses identity information and makes users access transparently to solve electronic signature problems. We also design and verify electronic signature system that reduces threats to security, which cause server attack by distributing the part of signature key to both server and client. The application model with lightweight server system based on the electronic signature system is expected to be used in the promotion of the e-Commerce and help to make its business more efficient and competitive.

• Journal of Internet Computing and Services
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• v.20 no.3
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• pp.129-135
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• 2019

Recently, it is anticipated that 5G network would play the significant role of the neural network for 4th generation industry revolution and create huge value for the new market. However, in spite of proliferating prospect of 5G network industry and leading position in the launch of 5G, network operators have hesitated to give their full support to establishing proper network. Due to the lack of business models promoting 5G industry, network operators feel that they will not realize the return from the exorbitant investment in 5G network establishment. Moreover, the rigorous research efforts to investigate and analyze the various business environments regarding 5G rarely exists. Therefore, the purpose of the research is to holistically propose the research issues related to the technology, service providing method, governmental policy, and business models in commercializing and promoting 5G network.

• Journal of Internet of Things and Convergence
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• v.7 no.4
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• pp.77-83
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• 2021

In the 4^th industrial revolution, research on various new technologies is being actively conducted. Among the new technologies of the 4^th industrial revolution, interest in blockchain is very high. A lot of research on this kind of block chain is being actively conducted, centered on graduate schools. It is not easy for a university to operate a dedicated blockchain curriculum centered on undergraduate students. In such a situation, a variety of new blockchain ecosystems have been created to revitalize the blockchain-related industry, and many developments are being made with a lot of interest and effort. In this research, we intend to propose a university curriculum model for blockchain, which is important in the 4^th industrial revolution. Regarding the blockchain education model, we propose a related blockchain education model focusing on the contents of operating an industry-oriented education course through the human resource nurturing process, and various blockchain education will be activated to achieve the blockchain industry development.

• The Journal of the Convergence on Culture Technology
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• v.9 no.4
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• pp.611-616
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• 2023

ECG(electrocardiogram) is a test used to measure the rate and regularity of heartbeats, as well as the size and position of the chambers, the presence of any damage to the heart, and the cause of all heart diseases can be found. Because the ECG signal obtained using the ECG-KIT includes noise in the ECG signal, noise must be removed from the ECG signal to apply to the deep learning. In this paper, the noise of the ECG signal was removed using the digital IIR Butterworth low-pass filter. When the performance evaluation of the three activation functions, sigmoid(), ReLU(), and tanh() functions, was compared using the deep learning model of LSTM, it was confirmed that the activation function with the smallest error was the tanh() function. Also, When the performance evaluation and elapsed time were compared for LSTM and GRU models, it was confirmed that the GRU model was superior to the LSTM model.