• Journal of Communications and Networks
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• 제13권6호
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• pp.621-624
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• 2011

With the rapid growth of internet traffic, accurate and reliable prediction of internet traffic has been a key issue in network management and planning. This paper proposes an autoregressive-generalized autoregressive conditional heteroscedasticity (AR-GARCH) error model for forecasting internet traffic and evaluates its performance by comparing it with seasonal autoregressive integrated moving average (ARIMA) models in terms of root mean square error (RMSE) criterion. The results indicated that the seasonal AR-GARCH models outperformed the seasonal ARIMA models in terms of forecasting accuracy with respect to the RMSE criterion.

• Journal of Information Technology Applications and Management
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• 제17권2호
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• pp.133-154
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• 2010

Recently, Internet Telephony has become increasingly popular in telecommunication industry. However, previous research on Internet Telephony has focused on analyzing specific Internet Telephonysolutions, identifyingthe Internet Telephony movement itself. The research on prediction models about Internet Telephony adoption has been minimal. The main propose of this study is to develop models for predicting transition intention from using traditional telephones to using Internet Telephony. To do so, this study uses data mining methods to analyze demands in the IT communications market and to provide management strategies for Internet telephony providers. Especially this study uses discriminant analysis, logistic regression, classification tree, and neural nets to develop those prediction models toward Internet Telephony adoption. The models are compared with each other and a superior model is chosen.

• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 2010년도 춘계국제학술대회
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• pp.187-199
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• 2010

Recently, Internet Telephony has become increasingly popular in telecommunication industry. However, previous research on Internet Telephony has focused on analyzing specific Internet Telephony solutions, identifying the Internet Telephony movement itself. The research on prediction models about Internet Telephony adoption has been minimal. The main propose of this study is to develop models for predicting transition intention from using traditional telephones to using Internet Telephony. To do so, this study uses data mining methods to analyze demands in the IT communications market and to provide management strategies for Internet telephony providers. Especially this study uses discriminant analysis, logistic regression, classification tree, and neural nets to develop the prediction models for the Internet Telephony adoption. The models are compared with each other and a superior model is chosen.

• ETRI Journal
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• 제27권1호
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• pp.64-74
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• 2005

Traditional Internet pricing schemes are coming under continual pressure to adapt to, and encourage, a changing mix of Internet applications and consumer usage patterns. Much research effort over the last decade has been focused on developing more efficient and attractive charging schemes. However, none of the proposed models has been widely deployed. This raises questions regarding the inhibiting factors and missing pieces that make pricing the Internet such a challenge. In this paper, we discuss the problems with current Internet pricing schemes, review the history of Internet pricing research over the last ten years, and summarize the key features and motivations of the most significant models. We develop a novel visual approach to comparing and evaluating such schemes using a three-dimensional (3D) metric encompassing technical efficiency, economic efficiency, and social impact. We address and discuss the important factors that have inhibited the deployment of the reviewed models and suggest productive areas of focus for future Internet pricing research.

• 한국정보시스템학회지:정보시스템연구
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• 제10권2호
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• pp.33-64
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• 2001

With the development of the Internet, electronic commerce, electronic markets, and digital economy, new business paradigm and new ways of business have been emerging and developing. The development of right and robust business models for electronic markets is a key for Internet business success. This parer reviews previous studies and successful cases for business models based on the Internet. This paper presents strategic factors such as the business value and the source of revenue, products and services, business processes and technologies, and the characteristics of electronic markets and relationship with customers and partners as a framework for developing sustainable and robust business models. This paper presents seven propositions for developing successful Internet business models as guidelines for practitioners and theorists.

• 경영정보학연구
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• 제8권2호
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• pp.51-72
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• 2006

본 연구에서는 인터넷에서 운영되는 비즈니스 모델 분류와 함께 각 모델 별로 주요 수익요인을 알아보았다. 선행 연구 결과들과 문헌 자료들을 참고하여 인터넷 비즈니스 모델을 판매모델, 중개모델, 광고료모델, 이용료모델로 분류하였으며, 이 들 각 모델들의 수익요인들을 문헌자료와 전문가인터뷰를 통해 선정하였다. 인터넷 비즈니스 모델별 주요수익요인의 차이여부를 파악하기 위하여, 2단계의 조사가 이루어졌다. 첫 단계는 전문가 조사로, 인터넷 비즈니스의 수익성에 영향을 미치는 항목전정 및 각 수익모델별 가중치를 파악하기 위해 이루어졌다. 인터넷 비즈니스 모델에 대한 이해와 경험이 풍부한 전문가들을 대상으로 인터뷰 조사 및 AHP 질문지에 대한 답변을 얻었다. 두 번째 단계의 조사로서, 위의 전문가 조사 단계에서 얻어진 평가 항목들을 사용하여, 직접 운영중인 인터넷 비즈니스 모델들에 있어서 각 요소들이 실로 중요하게 운영되고 관리되고 있는지를 설문 조사 하였다. 유효 설문 답변으로 파악된 각 평가항목별 획득점수에(1단계에서 파악된) 가중치를 곱하여 최종 평가값을 얻었으며, 그 차이를 수익모델 별로 분석하였다. 분석결과, 판매모델, 중개모델, 이용료모델은 사업전략이 가장 중요하였으며, 광고료모델은 운영효율이 가장 중요하였다. 사업전략 중, 판매모델은 수익률 증가 전략, 중개모델은 수익 고객 확보 전략, 이용료모델은 고객정의가 가장 중요한 활동으로 파악되었다.

• 한국전자거래학회지
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• 제4권3호
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• pp.95-118
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• 1999

There have been many research papers and practical implementations on the various EC(Electronic Commerce) aspects such as merchant system, security, payment gateway, legal and policy issues. However, it is very hard to find the systematic approaches and business process models from the viewpoint of the company willing to start B2C(Business-To-Customer) EC. Therefore, we develop business process models for the planning, systems analysis and design, implementation, and operation of internet shopping mall to suggest a guideline and reference model for the realization of successful B2C EC.

• International Journal of Computer Science & Network Security
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• 제21권8호
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• pp.28-34
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• 2021

Internet Service Providers (ISPs) constantly endeavor to resolve network congestion, in order to provide fast and cheap services to the customers. This study suggests two models based on Markov chain, using three and four access attempts to complete the call. It involves a comparative study of four models to check the relationship between Internet Access sharing traffic, and the possibility of network jamming. The first model is a Markov chain, based on call-by-call attempt, whereas the second is based on two attempts. Models III&IV suggested by the authors are based on the assumption of three and four attempts. The assessment reveals that sometimes by increasing the number of attempts for the same operator, the chances for the customers to complete the call, is also increased due to blocking probabilities. Three and four attempts express the actual relationship between traffic sharing and blocking probability based on Markov using MATLAB tools with initial probability values. The study reflects shouting results compared to I&II models using one and two attempts. The success ratio of the first model is 84.5%, and that of the second is 90.6% to complete the call, whereas models using three and four attempts have 94.95% and 95.12% respectively to complete the call.

• 컴퓨터교육학회논문지
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• 제11권5호
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• pp.47-55
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• 2008

인터넷은 학교 교육정보화에 있어서 가장 중요한 인프라가 되었다. 따라서 학교 교육정보화 교육의 효율성을 위해서는 인터넷 적정 대역폭 제공 여부가 매우 중요한 요소이다. 특히 인터넷 신기술을 활용한 다양한 수업모형들이 개발되고 있으며, 이를 지원하기 위해서는 적재적소에 인터넷 적정대역폭이 제공되어야 한다. 본 연구는 현재 학교에서 사용하고 있는 인터넷 트래픽 유형 및 사용량을 분석하고, 이를 토대로 학교 급별 적정 대역폭 산정 방안을 제안하고자 한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제4권4호
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• pp.452-474
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• 2010

Formidable growth of Internet technologies has revealed challenging issues about its scale and performance evaluation. Modeling and simulation play a central role in the evaluation of the behavior and performance of the large-scale network systems. Large numbers of nodes affect simulation performance, simulation execution time and scalability in a weighty manner. Most of the existing simulators have numerous problems such as size, lack of system theoretic approach and complexity of modeled network. In this work, a scalable discrete-event modeling approach is described for studying networks' scalability and performance traits. Key fundamental attributes of Internet and its protocols are incorporated into a set of simulation models developed using the Discrete Event System Specification (DEVS) approach. Large-scale network models are simulated and evaluated to show the benefits of the developed network models and approaches.