• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.353-356
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• 2011

자동차 폐차사업자들은 대부분 소규모로 영세하게 운영되고 있으며, 비효율적인 폐차 프로세스로 인해 폐차 소유자는 물론 폐차처리장까지 불이익을 받고 있다. 이를 위한 폐차 시스템에 대한 연구가 국내외에서 활발히 진행되고 있다. 하지만 기존에 개발되어진 폐차 해체시스템의 경우는 국내 폐차업계에 적용하기에는 경제적, 실용적으로 현실성이 부족하다. 따라서 본 연구에서는 폐차에 대한 효율성 극대화와 범용성 확보를 위해 시뮬레이션을 통한 폐자동차 해체시스템을 개발하고자 한다. 시뮬레이션을 통한 폐차 해체시스템의 사용은 복잡한 공정 또는 시스템의 설계 및 운영결과에 대한 효율적 분석이 가능하며, 다양한 위치 및 작업내용을 변경시켜 여러 대안을 마련할 수 있고, 이에 대한 결과를 미리 알아봄으로써 적은 시간과 비용으로 현장상황에 맞는 적절한 시스템을 구축할 수 있게 해주는 장점이 있다. 또한 최적 해체경로 시스템의 적용으로 시스템의 효율을 향상시켰다. 개발되어질 시스템은 높은 범용성 및 유연성 확보로 국내 폐차 업계의 발전에 크게 이바지 할 것이다.

• Review of KIISC
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• v.32 no.4
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• pp.85-92
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• 2022

한국은 평창 동계올림픽을 통해 세계 최초 5G 상용화 서비스를 시연하였으며, 대부분의 사람들이 5G 스마트폰을 사용하고 있다. 전 세계적으로도 5G 스마트폰의 사용자수와 5G 네트워크를 이용한 헬스케어, 자율주행, 스마트제조, 가상융합, 대용량 데이터처리 등 산업체 중심의 활용 및 서비스가 계속해서 증가되고 있다. 5G 네트워크는 속도, 대기 시간, 대역폭 측면에서 4G 보다 개선되었지만, 5G 코어 네트워크 자체에 존재하고 있는 보안위협과 5G 네트워크를 구축 및 운영하는 관점에서 다양한 보안 문제들이 존재할 수 있다. 이러한 보안 문제들을 해결하기 위해 UN 산하 정보보호 국제표준을 개발하고 있는 ITU-T SG17에서는 통신사업자 및 부가서비스 제공자들이 5G 네트워크를 구축하고 운영할때에 요구되는 보안 지침에 대한 국제표준을 개발하고 있다. 본 논문은 ITU-T SG17에서 추진되고 있는 5G 보안 국제표준화 동향에 대해 살펴하고자 한다. (* 참고: ITU 내에 '5G' 용어는 'IMT-2020' 용어로 표기함)

• Journal of the Economic Geographical Society of Korea
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• v.11 no.2
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• pp.233-250
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• 2008

This paper aims to analyze the characteristics of BTL, and to propose the effective models connecting BTL and project finance, through the analysis of current state and case study of BTL. The main results of this study are as follows. Firstly, BTL business have been increasing fast, and most of projects are middle size projects below 100 billion Won. Nextly, key suggestions for improving BTL business model are analyzed, which are, first, risk allocation between public and private interests, second, improvement of method for selecting private investment consortium, and third, alleviation of long-term burden of local finance. Finally, effective models for connecting BTL and project finance, which are, first, model for using asset backed securities, second, model for dividing project corporations into construction corporation and operation corporation, and third, model for risk allocation between public and private interests.

• Journal of the Korea Convergence Society
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• v.13 no.4
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• pp.63-70
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• 2022

Due to the recent changes in the education market and Corona, Consumers have moved to the tutoring and online learning markets, and the large-scale education service franchise business is reorganized into a small-scale franchise, a business model that maximizes the profit structure from a position where sales are important. Recently, a new learning balance model that can provide individualized services from teacher-centered to student-centered, motivate students is required. In this paper, we propose a new mathematical franchise model (K-MODEL) that can improve a company's profit structure while satisfying the recent education trends and consumer needs from the point of view of the franchise. K-MODEL expects franchisor and franchisees to have a stable profit structure by developing differentiated content and services, learning and operating processes, and various programs to improve learning achievement.

• Journal of Korea Society of Industrial Information Systems
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• v.26 no.6
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• pp.135-154
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• 2021

This paper compares and analyzes the domestic OTT services to access their success factors, strategies and examine the domestic OTT leader's wavve's unique differentiation strategy. It is a comparative study of the top five market share services based on the operator and content's key success factors criteria, revenue structure, personalization, interactive media and cooperation. As a result, the common success factors were contents that reflected the characteristics of the operators, hybrid VOD, hybrid filtering, real-time participation interaction, alliances between the same and heterogeneous industries, and utilization of existing business areas. In addition, the study confirmed that it expanded the scope of the project and operated the contents efficiently by introducing one or more business strategies. wavve has been widely validated with its content, while B2C has long-term benefits and overseas use services, and B2B has a systematic use system, differentiating itself from other services. This paper can be the foundation for identifying the strengths and differences of each service on 2021, entering the domestic OTT industry, and establishing competitive strategies.

• The Journal of Society for e-Business Studies
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• v.16 no.3
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• pp.145-158
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• 2011

Recently, the rapidly increased use of smartphone devices provides both opportunity and problems at the same time to the telecom companies in domestic and world wide. It provides a great opportunity to overcome the market stagnation of the existing voice- centric communications, and also problems of building a highly efficient new wireless access networks to accommodate huge volume of data traffic among smart devices. Facing with the age of keen competition, telecom companies have two kinds of strategies for network transition; a strategy of building uniform LTE -based 4G networks as fast as possible, and a hybrid network enhancement strategy compounding 3G and 4G networks using HSP A+, WiFi, cloud computing, etc. It is difficult to predict which strategy will have more successful outcome in the near future. This paper studies the trends and issues of network enhancement policies and transition strategies to the 4G network era, and tries to draw appropriate and efficient ways for network enhancement and operation.

• Environmental and Resource Economics Review
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• v.29 no.1
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• pp.91-111
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• 2020

While the renewable energy portfolio standard (RPS) is in place to expand the scale of renewable energy generation, the power producer can obtain the renewable energy credit (REC) and use it as an incentive to operate the facility. RECs secured by solar power generation can be traded through spot market or fixed price contracts, and, in the spot market trading, power producers are exposed to the uncertainty of REC spot price. In this study, real option analysis is conducted to analyze the optimal threshold of REC spot price for the conversion of REC trading method by power producer considering the uncertainty of REC spot price. We calculated the optimal threshold of REC spot price that can convert the trading method of REC from spot market to fixed price contract. In conclusion, the spot market trading is a rational trading method when considering the uncertainty of REC price, but the fixed price bidding is a rational trading method when not considering the uncertainty of REC price.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.209-215
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• 2019

The purpose of this study is to suggest the development of interactive services and technologies in the media industry. Through the analysis of domestic two-way broadcasting contents service, this study analyzed platform and services type according to service type of terrestrial broadcasting, SO operator and Telco. Also, by identifying the characteristics of interactive programs(open, interactive, personalized, stereoscopic), this study propose important convergence possibilities of the future providers and development plans through supporting technologies and services for each characteristic. In the case of terrestrial broadcasters, ARS, web sites and mobile apps were mostly provided in both directions, and SO and satellite broadcasting operators were found to provide diversity in interactive service operation using data domain. In the case of IPTV companies, most of them provide interactive services with additional video or information service through adjustment button or app, and cable TV operators had more adjustment data broadcasting than exclusive use data broadcasts. Therefore, domestic interactive broadcasting service type needs convergence type of revenue model needs and needs to be converted into new competitive interactive broadcasting program service environment.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.6
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• pp.1455-1461
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• 2015

Micro Grid is a new concept of electrical grid to solve several problems of Mega-Grid and it is under research and development at the national level around the world. With this background, Micro Grid Common Platform has been developed for interoperability technology of devices-systems in Micro Grid and securing enabler for new market. For supporting business models, Micro Grid Common Platform provides electric power information to Third-Party licensee via Open API function. Licensee, who want to develop electric power application by connecting to Micro Grid Common Platform, needs IDE(Integrated Development Environment) for service development and distribution. The paper proposes a service development tool for developing applications of Micro Grid Common Platform as a PaaS (Platform as a Service).

• Journal of the Korean Society for Nondestructive Testing
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• v.18 no.4
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• pp.321-329
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• 1998

Structural integrity of nuclear components is important for a safe operation of nuclear power plants. Therefore, nuclear power plants require to perform reliable, periodic inservice inspections. Korea Electric Power Company(KEPCO) operates the entire Korean nuclear power plants. Since nuclear power plant safety and the associated inservice inspection(ISI) are under the plant owner's responsibility, Korea Electric Power Research Institute(KEPRI), the R&D division of KEPCO, has established the ISI NDE Total Support system(TSS) for an efficient performance of ISI tasks, and initiated both key ISI NDE technology development program and traing & qualification system development program for an independent ISI operation. This paper describes details of these programs.