• The Journal of Korean Association of Computer Education
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• v.9 no.6
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• pp.41-51
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• 2006

Educators have recognized the usefulness of the e-BBS(electronic-Bulletin Board System) as an asynchronous communication medium for collaborative learning. However, theoretical outcomes to understand the structural analysis of thc e-BBS are not adequate enough. As a consequence, we are left with inadequate supportive tools to understand complex communication phenomena and to assist teachers to guide students to educational purposes. This can cause teachers to have a laissez-faire approach using BBS as a communication medium for education due to the lack of understanding the structural and overall situation. To address this issue, this paper presents a theoretical foundation to help understand the structure of discussion activities via the e-BBS and then presents a computational model, based on the structural analysis, for the behavioral analysis of participants. The formal representation of bi-directional discussion activities is realized by devising two graphs - the reply graph and the connection graph. Various measurements and statistics for the analysis are presented in the paper. To clarify the analysis, we classify the results produced through the analysis of discussion activities and participants' behaviors.

• Journal of the Korea Society of Computer and Information
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• v.17 no.10
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• pp.11-23
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• 2012

To achieve efficient code size reduction, this paper proposes a new compressed instruction set architecture for the OpenRISC architecture. The new instructions and their corresponding formats are designed by the profiling information of the existing instruction usage. New 16-bit instructions and 32-bit instructions are proposed to compressed the existing 32-bit instructions and instruction sequences, respectively. The proposed instructions can be classified into three types. The first is the new 16-bit instructions for the frequent normal 32-bit instructions such as add, load, store, branch, and jump instructions. The second type is the new 32-bit instructions for the consecutive two load instructions, two store instructions, and 32-bit data mov instructions. Finally, two new 32-bit instructions are proposed to compress function prolog and epilog code, respectively. OpenRISC hardware decoder is extended to support the new instructions. Experiments show that the efficiency of code size reduction improves by an average of 30.4% when compared to the OR1200 instruction set architecture without loss of execution performance.

• Journal of Digital Convergence
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• v.12 no.2
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• pp.223-236
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• 2014

The paper studies the influencing factors of continuous usage intention for a scenario based cognitive FAQ service regrading on private information protection. The research result finds that three major factors are significantly positive to the continuous usage intention for the service. First, search easiness is an essential factor and it can be improved using sophisticate categorization. Second, Scenario based FAQ service is effective on understanding and solving questioner's situation. Related information is helpful for problem solving. The research shows that the new approach to private information protection area can lead to a more acceptable and reasonable problem solving tool.

• Journal of the Earthquake Engineering Society of Korea
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• v.9 no.6 s.46
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• pp.41-52
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• 2005

The seismic damage assessment due io the postulated earthquake was attempted for the buildings in the model district of Seoul City. The model district was selected to represent the typical structural and residential characteristics of Seoul City. The buildings in the model district were classified into 11 structural types. For each structural type, the capacity and fragility curves were constructed with parameters presented in HAZUS. The ground motions due to the postulated earthquakes were artificially generated and ground response analyses were done for three kinds of soil profiles classified with respect to the depth of surface soil layer. The probability of damage state of each structural type was calculated using capacity spectrum method and fragility curve. Finally, the calculated results were translated into GIS database and mapped to evaluate the seismic damage in the model district.

• Journal of Internet Computing and Services
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• v.13 no.6
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• pp.25-32
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• 2012

There is a growing controversy on whether and how to regulate real-time broadcasting services carried on smartphone. Some advocates strict regulation on them but the others minimal regulation. This study aims to suggest guiding rules for how to regulate broadcasting services in smartphone. For this, the study interviewed fourteen (14) executives of broadcasting companies, content providers, policy research center and regulatory body. The analysis indicates that linear channel service in smartphone is similar in form to traditional broadcasting but they should not be regulated at this moment. The supporting reasons are 1) regulating them is technically not effective, 2) they were already regulated in their primary service platforms, 3) they don't have a significant impact on a society. Consequently, the study suggests that the service providers are categorized as value added common carriers as defined in the Telecommunication Business Act.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.563-570
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• 2006

본 논문은 감정 교류를 위한 목적으로 가상 캐릭터에서 사용되기 시작하여 현재 로봇에 이르기까지 그 이용 범위를 넓혀가고 있는 스토리텔링이 사용자 친밀성에 미치는 영향과 사용자가 어떻게 엔터테인먼트 로봇과 친밀성을 형성해나가는지, 또 친밀성 요소들은 다양한 스토리텔링에서 서로 어떤 관련성을 가지고 친밀성 형성에 영향을 주는지를 연구 목적으로 삼고 있다. 이를 위해 스토리텔링과 관련된 대화가 가능한 지능형 엔터테인먼트 로봇에 대한 연구를 우선적으로 알아보았으며, 이를 토대로 엔터테인먼트 로봇 중 하나인 애완용 로봇, 아이보(AIBO)가 지니고 있는 스토리텔링을 통해 사용자와 로봇 간 친밀성 형성 및 스토리텔링을 바탕으로 한 친밀성 요소간의 관련성을 알아보았다. 참가자 15명의 설문조사를 바탕으로 실시한 상관관계분석을 통해 사용자와 아이보(AIBO)가 정서적, 오락적, 행동적, 상호공유성에서 인지적, 사회적 친밀성보다 상대적으로 강한 친밀성을 형성하고 있다는 것과 Alexis K. Walker 와 Linda Thompson(1983)을 기본으로 대인관계 측면에서 친밀성에 대해 접근한 이경희(1998), 김혜정(2001), 김미라(2001), 이금남(2001), 송상홍(2004)의 선행 연구를 참조로 분류된 6가지 차원의 친밀성 구성 요소들은 스토리텔링의 형식에 따라 서로 다른 관계성을 형성하고 있다는 것으로 나타났다. 본 논문은 아이보(AIBO)에 쓰이는 스토리텔링이 친밀성 형성에 어떤 영향을 미치는지 또 스토리텔링의 차원에 따라 다르게 반응을 보이는 친밀성 요소들이 서로 어떤 관련성을 맺고 있는지를 살펴본 것에 의의를 둘 수 있다. 스토리텔링에 따라 관련성 정도를 달리하는 친밀성 요소들의 관계를 바탕으로 친밀성 형성에 유용한 스토리텔링의 방향을 제시하는데 의의가 있다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.5 no.3
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• pp.279-289
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• 2003

In karst formation area, the tunnel support system is an important factor for the tunnel safety during operation. It is also not easy to determine the tunnel supporting system in the design stage. Therefore, it is necessary to standardize the tunnel supporting system in uncertain ground condition. This paper presents the standardization of the tunnel supporting systems to be adopt in karst formation. For the tunnel planned in the project area, karst features and the expected scenarios in the tunnel area were developed based on the results of the geological and geotechnical assessment. In order to provide specific supporting system and construction details for a wide range of possible karst features, the generalized typical support systems are developed according to the classification of karst features. In addition, the initial support systems and construction sequence for each karst feature are also presented in this paper.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.397-407
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• 2011

The Open Position System is a new personnel management system started in korea, 1999.Open Position System have purpose to use outstanding talents and to expertise from both public and private sector. Korean government adapted open position system in order to use the right man in the right place. And Korean government incresae application of Open Position System. But, in spite of strong good point of Open Position System, We have limitation to apply Open Position System in police organization, generally. Because police have unique characteristics compare with other public organization. There is constant controversy concerning unique characteristics of police organization. Now, Korean police adopt Open Position System in few division: Chiep of Driver's License Agency, Director General for Audit and Inspection of Nation police Agency, Chiep of police hospital. Therefore, this study explore, extention possibility of Open Position System in Korean police.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.183-188
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• 2008

Engine control/performance model for helicopter simulator is one of the most important models which affect flight performance and handling quality. It is typical to develop the model based on the raw data and models from the engine designers/manufacturers. The approaches in this study were to develop the basic model based on the available resources and to tune and verify it based on the ground/flight test results. The maintenance manuals of TB3-117 which is installed in KA-32T were reviewed and the components to be simulated for the engine control model were categorized and modeled. Piece-wise linear modeling method was used for the engine performance model. The engine performance data in the engine maintenance manuals were incorporated into the engine steady state performance tables, which were incorporated with the transfer functions for the dynamic performance. Engine control/performance model was compared and tuned with the ground/flight test results. It was verified that the fidelity of the model was within the tolerances in FAA AC120-63.

• Korean Journal of Construction Engineering and Management
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• v.12 no.3
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• pp.3-10
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• 2011

Currently, technologies for industrialization and dissemination for Han-Ok are developed actively. Also BIM technologies are actively developed. However, it is difficult to find the research and study cases for construction method and process for Han-Ok. BIM is the technology for managing information with element as a unit for building design, construction and management, and it is closely related to Han-Ok using assembling method for building construction. We analyzed the basic construction processes for IK-Gong and MinDoRi house, typical types of Han-Ok. Also we developed the Work Breakdown Structure of construction process for Han-Ok and suggested the method for construction simulation using BIM. Simple BIM model of Han-Ok which is Ik-Gong type is used for case study. It was possible to link automatically between 3D elements objects and construction activities about 95% in the case study. More studies of construction method for various type of Han-Ok and rules for link between elements and construction activities are required for Industrialization and dissemination of Han-Ok.