• The KIPS Transactions:PartC
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• v.18C no.6
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• pp.413-422
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• 2011

Overlay network is a ready-to-use solution to enable new network functionality with existing Internet connectivity intact. This paper introduces a network service which helps users easily compose their own service overlay networks through software-defined networks. We look into the structure of service gateway which enables 1 Gbps packet processing on composed overlay networks. We also provide examples for the way of composing service overlay for support multicast applications. Experiment results carried over the KREONET (Korea Research Environment Open NETwork) show the forwarding performance of the service gateway.

• Journal of Korean Library and Information Science Society
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• v.33 no.4
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• pp.349-362
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• 2002

본 연구의 목적은 중국 연변조선족자치구에 현존하는 각종 유형의 도서관문헌 정보사업 현황과 문제점을 밝히는데 있다. 본 연구의 의의는 공개된 자료가 미미하고 정형화된 자료가 부족한 상황에서 실태조사를 병행하여 상세한 정보를 제공한 점이다. 도서관의 현대화작업은 90 년대 후반기부터 컴퓨터를 도입하여 전개되기 시작하였고, 연변과학기술대학도서관의 경우는 현대화된 시설을 갖추고 한국의 선진 도서관리 방법을 도입하여 도서관을 운영하고 있으나, 기타 도서관들은 부분적으로 전자 연람실을 구축하여 서비스하고 있다. 그러나 현재 조선족자치주 대부분의 도서관들은 자금부족으로 현대화된 도서관을 구축하지 못하고 있는 실정이다. 앞으로 지도층에서의 중점사업으로의 추진과 서부대개발사업의 우대정책을 통해 자금 확보를 도모하여 도서관의 현대화 건설의 추진을 기해야 할 것이다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.602-604
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• 2000

컴퓨터의 등장과 과학기술의 발달로 인하여 기존의 종이를 이용한 정보의 전달과 보급에서 점차 전자 매체를 이용하는 방향으로 전환되고 있다. 이러한 변화와 더불어 인터넷과 전자상거래의 비약적인 발전은 전자북이라는 새로운 형태로 정보의 제공 및 보급을 위한 모델을 창출하기에 이르렀다. 그러나 디지털 컨텐츠를 이용하는 전자북 시스템은 컨텐츠의 특성상 복사와 배포의 유연성으로 말미암아 저작권 보호라는 중대한 난점을 가지고 있다. 이에 본 논문에서는 전자북 시스템의 컨텐츠를 가변적 암호키를 사용하여 사용자측에서 재생산하는 방식을 제안함으로써 전자북 컨텐츠와 저작권 보호를 위한 전자북 보급 시스템을 설계하고 구현하였다.

• Annual Conference of KIPS
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• 2022.11a
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• pp.961-963
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• 2022

데이터 기반 경제가 활성화되면서 데이터의 분석과 활용에 중점을 둔 서비스가 증가하는 추세이다. 금융 분야에서만 활용되던 마이데이터를 관광정보인 외부데이터와 결합해 사용자의 디지털 흔적을 수집, 분석하는 여행 마이데이터 플랫폼을 제시한다. 이를 통해 사용자에게 신뢰도가 높은 여행정보를 제공하고 여행 후 정산 문제를 해결하고자 한다.

• Environmental and Resource Economics Review
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• v.20 no.4
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• pp.643-662
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• 2011

As the concentration of people in urban area become severe and abnormal meteorological disasters such as regional torrential rains, heavy snows, sweltering heat, and so on have been increasing, the interest on the urban meteorological information service, which considers the specific characteristics of metropolitan areas in weather forecasting, are also increasing. The urban meteorological information service is one of up-to-date technologies which observes urban weather in a more microscale perspective compared to the present weather forecasting system and provides useful meteorological information which is specialized for metropolises in real time. Therefore, urban meteorological information service is expected to contribute to the increase in quality of life for citizens and to the development of industry in urban areas. In this study, we estimate the economic benefit of the urban meteorological information service using contingent valuation method with survey data of the citizens who are expected to be the direct customers of this new information service. As a result, we conclude that the household is willing to pay 5,963 Korean won per year on average, during a period of five years, for receiving this meteorological information service, and this willingness-to-pay is varied by the socio-economic characteristics of head of the household.

• Annual Conference of KIPS
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• 2012.04a
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• pp.807-809
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• 2012

최근 스마트폰 사용의 활성화로, 스마트폰 기반의 통신네트워크를 이용하는 IT 기술들과 타 산업과의 융합 산업의 범위가 확대되고 있다. 또한 스마트폰을 사용하는 사용자들에게 더 나은 삶의 질을 제공하기 위하여, 스마트폰-앱에 관련된 연구가 활발히 진행되고 있다. 따라서 본 논문은 대형 행사장과 같은 많은 인원이 모이는 곳에서 인원을 통제하거나 다양한 서비스를 제공하는데 어려움이 많이 발생하는데, 스마트폰 앱 설계 및 개발을 통하여 이러한 어려움을 해결하고자 한다. 특히, 증강현실 기술을 이용하여 네트워크 기반의 예약시스템 및 이의 운용방법에 대해서 기술하고, 실제 스마트폰 앱 개발에 앞서, 사전 프로토타이핑을 통해서 시스템을 설계하고 개발하는 방법을 제공하고자 한다.

• Journal of Information Management
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• v.40 no.4
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• pp.1-22
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• 2009

Large-scaled information extraction plays an important role in advanced information retrieval as well as question answering and summarization. Information extraction can be defined as a process of converting unstructured documents into formalized, tabular information, which consists of named-entity recognition, terminology extraction, coreference resolution and relation extraction. Since all the elementary technologies have been studied independently so far, it is not trivial to integrate all the necessary processes of information extraction due to the diversity of their input/output formation approaches and operating environments. As a result, it is difficult to handle scientific documents to extract both named-entities and technical terms at once. In this study, we define scientific as a set of 10 types of named entities and technical terminologies in a biomedical domain. in order to automatically extract these entities from scientific documents at once, we develop a framework for scientific core entity extraction which embraces all the pivotal language processors, named-entity recognizer, co-reference resolver and terminology extractor. Each module of the integrated system has been evaluated with various corpus as well as KEEC 2009. The system will be utilized for various information service areas such as information retrieval, question-answering(Q&A), document indexing, dictionary construction, and so on.

• KIPS Transactions on Software and Data Engineering
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• v.12 no.1
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• pp.31-40
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• 2023

Various policies and services are being implemented in Korea and other countries, such as the expansion of convenience facilities for mobility support, the provision of special means of transportation, and the establishment of public transportation route plans and fare policies based on data and AI-based movement pattern analysis to ensure the mobility rights of the weak in transportation. However, A research is still needed to improve service convenience in order to more conveniently use the desired means of transportation in a necessary situation from the viewpoint of the transportation vulnerable. This study examines the policies and services for the promotion of mobility for the transportation disadvantaged, and presents a MyData-based service model for mobility support for the transportation disadvantaged. In the proposed service model, the transportation-disabled person can freely choose and use the means of transportation according to individual circumstances, and receive the same transportation welfare voucher benefits provided by the state or government. The proposed service model defines the MyData platform that supports the safe collection and use of personal data, the authentication of traffic welfare recipients based on MyData, and the payment function for fee settlement after using the service as key components. In this research, the service satisfaction from the user's point of view was investigated by implementing the proposed service model and providing a demonstration service for the transportation vulnerable in Daejeon.

• Korean Journal of Remote Sensing
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• v.28 no.4
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• pp.467-475
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• 2012

Cloud computing services are known that they have many advantages from the point of view in economic saving, scalability, security, sharing and accessibility. So their applications are extending from simple office systems to the expert system for scientific computing. However, research or computing technology development in the geo-spatial fields including remote sensing applications are the beginning stage. In this work, the previously implemented smartphone app for image processing was first migrated to mobile cloud computing linked to Amazon web services. As well, parallel programming was applied for improving operation performance. Industrial needs and technology development cases in terms of mobile cloud computing services are being increased. Thus, a performance testing on a satellite image processing module was carried out as the main purpose of this study. Types of implementation or services for mobile cloud varies. As the result of this testing study in a given condition, the performance of cloud computing server was higher than that of the single server without cloud service. This work is a preliminary case study for the further linkage approach for mobile cloud and satellite image processing.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.8 no.1
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• pp.867-874
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• 2018

This study aims to develop a sort of expert system to simulate Internet of Things (IoT) service in architectural design alternatives and enhance the simulation performance using building information. The proposed protype system, named iotBIM, visualizes human behaviors and IoT services in a virtual place that is automatically generated from among design alternatives. We use commercial building information modeling (BIM) authoring tool for the development of iotBIM. The decision to develop iotBIM on the BIM platform was made because BIM tools already generate precise 3D models of design alternatives; iotBIM is plugged into the BIM tool as a simulation module. In the midst of the design process, architectural designers can activate iotBIM to investigate and establish IoT services that accord visually with design alternatives. The purpose of this study is to provide a theoretical and technological basis for the ultimate goal of this study.