• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권11호
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• pp.5455-5475
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• 2016

In this article, we model the distributed relay assignment network as a many-to-one matching market with peer effects. We discuss two scenarios for throughput optimization of relay networks: the scenario of aggregate throughput optimization and the scenario of fairness performance optimization. For the first scenario, we propose a Mutual Benefit-based Deferred Acceptance (MBDA) algorithm to increase the aggregate network throughput. For the second scenario, instead of using the alternative matching scheme, a non-substitution matching algorithm (NSA) is designed to solve the fairness problem. The NSA improves the fairness performance. We prove that both two algorithms converge to a globally stable matching, and discuss the practical implementation. Simulation results show that the performance of MBDA algorithm outperforms existing schemes and is almost the same with the optimal solution in terms of aggregate throughput. Meanwhile, the proposed NSA improves fairness as the scale of the relay network expands.

• 한국산학기술학회논문지
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• 제11권5호
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• pp.1873-1880
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• 2010

최근 인간 중심의 정보화 사회가 USN 기술의 발전과 더불어 유비쿼터스 컴퓨팅 사회로 급격히 변모하고 있다. USN 응용 웹 서비스는 USN 기술을 이용하여 환경과 상황의 자동 인지를 통해 편리함을 제공하며 실시간 관리를 통해 최적의 서비스를 제공함으로써 인간 생활의 편리성과 안전성을 향상시킨다. 따라서 이러한 기술을 이용한 USN 응용 웹 서비스는 생활 전반에 다양하게 적용된다. 본 논문에서는 USN을 기반으로 수집된 메타 데이터와 센싱 데이터에 대하여 사용자들의 요구사항을 분석하여 시나리오를 구현하고 각 시나리오에 가장 효과적으로 대응 할 수 있는 시각화를 구현하였다.

• Environmental Analysis Health and Toxicology
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• 제18권4호
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• pp.255-269
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• 2003

The objective of this study was to estimate human exposure to benzo (a)pyrene through multimedia/multi-pathway exposure scenario. The human exposure scenario for benzo(a)pyrene was consisted of 12 multiple exposure pathways, and the multipathway human exposure model based on this scenario constituted. In this study, the multipathway human exposure model was used to estimate the concentrations in the exposure contact media, human intake factors and lifetime average daily dose (LAD $D_{model}$) of benzo(a)pyrene in the environment. Sensitivity analysis was performed to identify the important parameters and Monte-Carlo simulation was undertaken to examine the uncertainty of the model. The total LAD $D_{model}$ was estimated to be 5.52${\times}$10$^{-7}$ mg/kg-day (2.06${\times}$10$^{-7}$ -8.65${\times}$10$^{-7}$ mg/kg-day) using the multipathway human exposure model. The inhalation dose accounted for 78% of the total LADD, whereas ingestion and dermal contact intake accounted for 20.2% and 1.8% of the total exposure, respectively. Based on the sensitivity analysis, the most significant contributing input parameter was benzo (a)pyrene concentration of ambient air. Consequently, exposure via inhalation in outdoor/indoor air was the highest compared with the exposure via other medium/pathways.

• Journal of Information Processing Systems
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• 제15권3호
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• pp.520-537
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• 2019

This paper proposes a system that can detect the data leakage pattern using a convolutional neural network based on defining the behaviors of leaking data. In this case, the leakage detection scenario of data leakage is composed of the patterns of occurrence of security logs by administration and related patterns between the security logs that are analyzed by association relationship analysis. This proposed system then detects whether the data is leaked through the convolutional neural network using an insider malicious behavior graph. Since each graph is drawn according to the leakage detection scenario of a data leakage, the system can identify the criminal insider along with the source of malicious behavior according to the results of the convolutional neural network. The results of the performance experiment using a virtual scenario show that even if a new malicious pattern that has not been previously defined is inputted into the data leakage detection system, it is possible to determine whether the data has been leaked. In addition, as compared with other data leakage detection systems, it can be seen that the proposed system is able to detect data leakage more flexibly.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.459-468
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• 2007

The u-City construction project has become a hot topic in the construction market because it seems economic value-added field for construction firms. However, construction firms don't willingly participate in the u-City construction market because environments of the future business for the u-City are very uncertain. Scenario planning is a very powerful method in managing this uncertain planning situation and is based on scenarios that help each enterprise appropriately adapt itself to its own business environments. Therefore it is based on the main principles of systems thinking and multiple futures. For the purpose of dealing with such uncertainties, this paper attempts to develop the possible market scenarios of the u-City construction market in S.Korea through a scenario planning approach. From this perspective, we considered various aspects of the u-City construction such as market demands, technology development, policy level and management environment. After considering the relevant issues, we identified the main trends and key uncertainties. Finally, we developed three coherent u-City construction market scenarios. Construction firms can use these scenarios as a basic reference for market analysis and business strategy. Therefore, this paper is able to enhance the participation of construction firms in the u-City construction market.

• 대한조선학회논문집
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• 제43권1호
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• pp.50-58
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• 2006

Free running model tests gives us only maneuvering indices not hydrodynamic derivatives. For this reason, system identification method has been applied to the measured data to identify mathematical model describing hydrodynamic force. However It is difficult to obtain complete set of maneuvering derivatives because of strong correlation of sway velocity and yaw rate. Therefore, in this paper, we assumed that sway velocity related coefficients would be obtained by oblique towing test. and then proposed new procedure to estimate yaw related coefficients. To do this, correlation and regression analyses were carried out to establish modified model and estimate maneuvering derivatives. Also D-optimal rudder input scenario was found based on the modified model and confirmed the validity of its sufficient richness as a input scenario.

• 경영과학
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• 제28권3호
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• pp.143-159
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• 2011

Recently, the level of uncertainty in R&D investment for an enterprise has increased due to technological development and industrial changes. Accordingly it is necessary for an enterprise to forecast the future or foresight the future technologies. But, the fact that the methodology used in predicting future technology is suitable for large project makes enterprise difficult to forecast the future technologies or trends. Thus, this study seeks for available methodology for future technology foresight from enterprise standpoint. The methodology proposed in this research is based on the scenario model, especially focused on the customer needs and future society change.

• 한국실내디자인학회논문집
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• 제15권4호
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• pp.73-80
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• 2006

As ubiquitous technology(uT) is offered in the future space, human will find their life more convenient and prosperous, and the space efficiency will be improved with virtual displays within a limited space. In an living space with ubiquitous environments, all information of family members will be an essential source creating advanced future spaces both for users and for those maintaining the space. In recent studies of uT environment, development of scenario is mostly being carried out based on user and service. It is unsatisfactory, however, when it comes to the study of how these studies can be developed on the basis of architectural space. In this paper, we study about applying scenarios created through space analysis to suggest ways to predict the analysis of the relationship between digital devices/services and the building elements based on physical space with uT and to offer services smoothly to uT environment, intelligent devices and their users.

• 한국컴퓨터정보학회논문지
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• 제10권3호
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• pp.65-73
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• 2005

게임 개발의 성패는 창의적인가 아닌가에서 결정된다. 게임 개발 프로세스의 초기 단계인 시나리오 작성부분에서 특히 창의적인 아이디어 발상이 필요하다. 이를 위해 선행 개발된 웹 기반 창의적 발상 시스템(Creative Group Thinking System:이하 CGTS)을 게임 개발 디자인에 적용하여 활용하고자 한다. 따라서 본 연구는 게임 시나리오 작성 부분의 아이디어 발상 작업을 프로그램화하여 창의성을 높이고 작업시간을 단축하고자 한다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 1999년도 춘계 학술발표대회 논문집
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• pp.4-5
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• 1999

본 연구는 디자이너의 아이디어 발상기법과 시나리오기법, 그리고 코믹 챗을 비롯한 각종 관련 기법들의 분석과 적용을 통하여 ,제품의 다양한 사용 시나리오를 보다 빠르게 작성해보고, 다각도로재구성 하면서 완성도 있는 제품 아이디어를 전개해 나갈 수 있도록 보조해 줄 수 있는 시나리오 디자인 프래임웍과 이를 응용한 컴퓨터 옹용 프로그램을 제안코자 한다. (중략)