• Journal of KIISE:Information Networking
• /
• v.30 no.5
• /
• pp.614-620
• /
• 2003

As the proliferation of Internet, mobile agent related technologies are examined for possible growth and evolution. In information retrieval, network and distributed system management, and electronic commerce, mobile agent is more flexible than the traditional communication paradigm. Despite the performance benefits, mobile agent is not used widely in the market because it is very vulnerable to a variety of attacks. In many studies related the security vulnerability for a mobile agent, the high security causes the performance to degrade. In this paper, we propose and evaluate the efficient security model for mobile agent using TDGM(Trusted Domain & Guide Manager), which provides three kinds of services : the trusted domain management, the security service and the travel plan guide. The result clearly shows that this model provides high security and minimizes the performance degradation.

• Journal of Distribution Science
• /
• v.13 no.1
• /
• pp.57-70
• /
• 2015

Purpose - Open source software has high utilization in most of the server market. The utilization of open source software is a global trend. Particularly, Internet infrastructure and platform software open source software development has increased rapidly. Since 2003, the Korean government has published open source software promotion policies and a supply promotion policy. The dynamism of the open source software market, the lack of relevant expertise, and the market transformation due to reasons such as changes in the relevant technology occur slowly in relation to adoption. Therefore, this study proposes an assessment model of services provided in an open source software service company. In this study, the service level of open source software companies is classified into an enterprise-level assessment area, the service level assessment area, and service area. The assessment model is developed from an on-site driven evaluation index and proposed evaluation framework; the evaluation procedures and evaluation methods are used to achieve the research objective, involving an impartial evaluation model implemented after pilot testing and validation. Research Design, data, and methodology - This study adopted an iteration development model to accommodate various requirements, and presented and validated the assessment model to address the situation of the open source software service company. Phase 1 - Theoretical background and literature review Phase 2 - Research on an evaluation index based on the open source software service company Phase 3 - Index improvement through expert validation Phase 4 - Finalizing an evaluation model reflecting additional requirements Based on the open source software adoption case study and latest technology trends, we developed an open source software service concept definition and classification of public service activities for open source software service companies. We also presented open source software service company service level measures by developing a service level factor analysis assessment. The Behavior-Structure-Evolution Evaluation Model (BSEM) proposed in this study consisted of a rating methodology for calculating the level that can be granted through the assessment and evaluation of an enterprise-level data model. An open source software service company's service comprises the service area and service domain, while the technology acceptance model comprises the service area, technical domain, technical sub-domain, and open source software name. Finally, the evaluation index comprises the evaluation group, category, and items. Results - Utilization of an open source software service level evaluation model For the development of an open source software service level evaluation model, common service providers need to standardize the quality of the service, so that surveys and expert workshops performed in open source software service companies can establish the evaluation criteria according to their qualitative differences. Conclusion - Based on this evaluation model's systematic evaluation process and monitoring, an open source software service adoption company can acquire reliable information for open source software adoption. Inducing the growth of open source software service companies will facilitate the development of the open source software industry.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.20 no.1
• /
• pp.159-177
• /
• 1995

The objective of this paper is to propose a knowledge-based fuzzy post adjustment so that unstructured problems can be solved more realistically by expert systems. Major part of this mechanism forcuses on fuzzily assessing the influence of various external factors and accordingly improving the solutions of unstructured problem being concerned. For this purpose, three kinds of knowledge are used : user knowledge, expert knowledge, and machine knowledge. User knowledge is required for evaluating the external factors as well as operating the expert systems. Machine knowledge is automatically derived from historical instances of a target problem domain by using machine learning techniques, and used as a major knowledge source for inference. Expert knowledge is incorporate dinto fuzzy membership functions for external factors which seem to significantly affect the target problems. We applied this mechanism to a prototyoe expert system whose major objective is to provide expert guidance for stock market timing such as sell, buty, or wait. Experiments showed that our proposed mechanism can improve the solution quality of expert systems operating in turbulent decision-making environments.

• Proceedings of the KIEE Conference
• /
• 2000.07a
• /
• pp.403-405
• /
• 2000

This paper presents a N-player game theory application for analyzing power transactions in a deregulated energy marketplace such as PoolCo, where, participants, especially, generating entities, maximize their net profits through optimal bidding strategies (i.e., bidding prices and bidding generations). In this paper, the electricity market for power transactions is modeled as a non-cooperative. N-player game with complete information, where the solution is determined in a continuous strategy domain having recourse to the Nash equilibrium idea.

• Electronics and Telecommunications Trends
• /
• v.13 no.6 s.54
• /
• pp.148-165
• /
• 1998

통신사업자들의 해외시장 공략은 치열한 국내 경쟁환경을 탈피하고, 가속화 되는 기술변화의 물결에 편승하기 위해 최근들어 더욱 활발해지는 양상이다. 상대적으로 후발국가인 우리나라는 주요 통신사업자들의 해외시장 진출의 사례를 면밀히 분석하여 이를 바탕으로 해외시장 개척이나 전개시 참고함으로써 시행착오를 줄일 필요가 있다. 이에 따라 본 고에서는 지난 10여 년 간 주요 통신사업자들의 해외진출 행보상의 특성을 목표시장과 진출사업의 관점에서 파악하여, 향후 우리나라 사업자들이 해외시장에 접근하고자 할 때 유의하여야 할 진출 및 투자의 지침을 얻고자 하였다.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 1996.04a
• /
• pp.741-744
• /
• 1996

Artifical Neural Network(ANN) models were used for forecasting interest rate as a new methodology, which has proven itself successful in financial domain. This research intended to construct ANN models which can maximize the performance of prediction, regarding Corporate Bond Yield (CBY) as interest rate. Synergistic Market Analysis (SMA) was applied to the construction of models [Freedman et al.]. In this aspect, while the models which consist of only time series data for corporate bond yield were devloped, the other models generated through conjunction and reorganization of fundamental variables and market variables were developed. Every model was constructed to predict 1,6, and 12 months after and we obtained 9 ANN models for interest rate forecasting. Multi-layer perceptron networks using backpropagation algorithm showed good performance in the prediction for 1 and 6 months after.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.8 no.4
• /
• pp.912-917
• /
• 2004

The increase of illegal usage and conflict in digital content market would diminish motivation of creators for their work, furthermore break down digital content market on cyber-space. Watermarking technology support to the legal users by the protection technique based on the digital content copyright protection method(DRM). Most of previous digital watermarking have embeded to the content. In this paper, we propose a wavelet based watermarking method which is used for implementing in the frequency domain.

• Journal of Information Technology Services
• /
• v.5 no.1
• /
• pp.165-175
• /
• 2006

Electronic commerce has many advantages compared to the traditional way of doing business such as up to date information and rich service for less cost. There is a growing number of electronic commerce applications on the Internet. Using software agent technology, the market framework offers timesaving automation of auctions and flexibility through negotiations among the agents. In this research, we attempt to evaluate the performance of a negotiation decision function that considers the potential competitors in competitive market environment as well as that of a negotiation decision function that does not. For this evaluation, this study adopts the electronic marketplace as an application domain in which many sellers and buyers compete for limited resources in the marketplace.

• International Journal of Internet, Broadcasting and Communication
• /
• v.13 no.1
• /
• pp.168-179
• /
• 2021

With the introduction of China's new policies, the Chinese animation industry has gradually formed a sustainable industrial structure chain, and the output value of the animation market is also in a state of continuous growth. Since 2013, domestic animation has been developing from "lower age" to "ageing" and "adults". At the same time, with the popularization of China's pan-entertainment industry model, the multi-domain symbiosis of the Internet and mobile Internet has been realized, creating a fan economy of star IP (Intellectual Property), and promoting the linkage of various industries under the same IP. This paper mainly analyzes the development of the animation IP market in China's pan-entertainment mode in recent years, and analyzes the cross-media operation mode of the animation industry. At the same time, it studies the application of self-media in animation.

• Information and Communications Magazine
• /
• v.19 no.11
• /
• pp.24-31
• /
• 2002

지금까지 SDR을 비판적인 시각으로 검토해 보았다 하지만 분명한 것은 SDR은 disruptive technology의 기능성을 가지고 있다는 점이다. 현재 domain specific하게 vertical market을 구축하고 있는 구현방식을 horizontal market으로 바꿔보자는 발상으로 전체적인 기술과 시장의 대세와 일치하기 때문이다. 저자의 관점은 SDR을 technology-driven 한발상으로 '일단 SDR이다' 라고 revolution으로 접근하는 것은 옳지 않다고 보는 것이다. SDR이란 Hype이 Real이 되려면 (1) power 소모, co-working과 같은 기술적인 문제들이 해결되고, (2) SDR 도입을 지연시키는 시장 환경이 개선되어야 하며, (3) software download, middleware 나 operating system과 관련된 정치적인 문제들이 해결되어야 한다. 이러한 문제들은 하루 아침에 해결되는 것이 아니기 때문에 market-driven한 관점에서 SDR concept이 기존의 장벽들을 극복할 수 있을 때 하나씩 SDR cencept을 채용해가는 evolution으로 접근하는 것이 중요하다. 앞으로도 Moore의 법칙은 15년에서 20년 가까이 지속될 것으로 전망하고 있다. 이미 Moore의 법칙에 의한 기술발전이 수요를 앞서는 조짐이 나타나고 있는 분야도 있어 남아도는 gate를 어떻게 활용할 것인가에 대해 회사마다 다른 전략을 펴고 있다. 특히 TI가 DSP 기반으로 벌인 다양한 사업전력, Intel이 CPU 기반으로 벌이는 Radio Free 사업 전략은 SDR에 대해 많은 시사점을 던져 준다. MMITS Forum에서 시작하여 SDR Forum 초창기, 현재의 SDR Forum 까지 SDR의 개념은 시장의 반응에 따라 변해 왔고, 일부 기술들은 더 이상 SDR 이라는 그늘에 머물지 않고 독자적인 기술군을 형성해 가고 있다. 분명한 것은 SDR 기술은 시장에서의 도전을 바탕으로 끊임없이 변해왔고 앞으로도 변해 갈 것이다. 지금의 비전이 최종적인 것이라고 섣불리 판단하고, 시장의 기술 흐름을 아전인수식으로 해석하고 만병통치 약을 만들려는 시도는 실패 잉태하고 있는 매우 위험한 발상이다. SDR이 꿈꾸는 세상은 이상향임에 틀림없지만 항상 시장을 주도하는 것은 꿈이 아니라 가격 경쟁력이기 때문이다.