• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1250-1253
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• 2023

최근 정보 기술의 급격한 발전으로 스마트폰이 우리의 일상 생활에 점점 더 많이 들어오고 있으며, 사용자들은 많은 서비스들을 누릴 수 있게 되었다. 위치 기반 서비스(LBS)의 경우 스마트폰에 탑재된 위치 확인 기능을 통해 음식점 추천, 길찾기 등 개인형 맞춤 서비스를 제공하며, 사용자는 간단한 동의를 통해 자신의 위치를 LBS 서버에 전송하게 된다. 이는 사용자의 개인정보 침해의 요소가 될 수 있으며, 사용자의 민감한 정보가 공개될 수 있다. 따라서 본 논문에서는 사용자의 경로 데이터의 민감 정점을 보호하고, 통계적 질의를 할 때, 절대적으로 개인정보를 보호할 수 있는 방법을 제시한다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.4
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• pp.12-25
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• 2016

The purpose of this study is providing an evaluation criteria for appropriateness of bicycle riding path considering trip purpose based on cyclist's response of importance and satisfaction. The survey presents a quantified criteria of evaluating appropriateness of the bicycle path by investigating difference of impotance and satisfaction between two purposes among 5 selected influence factors about bicycle lane and bicycle parking facility, and in case of commuting purpose, information of destination is additionally considered. All the influence factors are analyzed by Analytical Hierarchy Process (AHP) which yields importance. For the factors which have a huge difference between two purposes, evaluation criteria using a GIS Data of respondent's path and satisfaction of each factors is developed, and other factors are made it by reviewing literature. The importance analyzed by AHP and evaluation criteria can provide a path based LOS for cyclist, and this information can be improved through user's response from app or search engine in the future. and by considering individual's evaluation, it can provide individually specified information.

• Journal of the Korea Society of Computer and Information
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• v.27 no.5
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• pp.117-125
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• 2022

Recently, as users' interest for travel increases, research on a travel route recommendation service that replaces the cumbersome task of planning a travel itinerary with automatic scheduling has been actively conducted. The most important and common goal of the itinerary recommendations is to provide the shortest route including popular tour spots near the travel destination. A number of existing studies focused on providing personalized travel schedules, where there was a problem that a survey was required when there were no travel route histories or SNS reviews of users. In addition, implementation issues that need to be considered when calculating the shortest path were not clearly pointed out. Regarding this, this paper presents a quantified method to find out popular tourist destinations using social big data, and discusses problems that may occur when applying the shortest path algorithm and a heuristic algorithm to solve it. To verify the proposed method, 63,000 places information was collected from the Gyeongnam province and big data analysis was performed for the places, and it was confirmed through experiments that the proposed heuristic scheduling algorithm can provide a timely response over the real data.

• Journal of the Korea Society of Computer and Information
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• v.20 no.1
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• pp.127-135
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• 2015

In this paper, we propose and implement an application that recommends safe paths for outdoor leisure activity of women based on Space Syntax theory. Compared to general navigation systems which focuses on the shortest time or the shortest distance, the proposed application makes safe paths the first priority. It generates path recommendation with regard to accessibility of travel time and correlation of regions and considers various risk factors for searching for the safest path. Concludingly, the employed Space Syntax algorithm enables the women users to select their own customized paths.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.139-140
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• 2022

본 연구는 재난발생 시 현장 상황 판단 및 대응 능력이 현저히 떨어지는 안전취약계층 중 장애인과 노인이 재난정보를 받고 안전하게 대피·대응할 수 있도록 지원하는 시스템의 시범적용에 대한 것이다. 재난정보 전달 및 대피지원 시스템은 재난에 취약한 장애인과 노인이 재난상황에서 각각의 취약 특성을 고려하여 재난 위기상황에 대응하도록 설계 하였으며, 실내 위치측정에 관한 공간정보 표준 및 데이터 구축과 개발한 시스템을 설치하고 구현할 수 있는 실내 공간을 선정하여 시범적으로 적용하였다. 재난정보 및 대피지원 시스템의 시범적용을 위해 선정된 시설의 실내 공간정보 구축 및 현행화를 통해 실내 대피경로를 구축하고, 실제 시범적용을 통해 보완하는 과정을 수행하였다. 장애인·노인 대상 재난정보 전달 및 대피지원 서비스 구축을 위해 실내에서 재난발생 시 재난정보 데이터를 실시간으로 수집하고 스마트폰과 연계할 수 있는 연계 모듈을 개발하였다. 또한 재난정보를 스마트폰에 알릴 수 있는 알람 푸시 모듈, 재난정보 및 대피 안내 모듈과 시각 장애인의 실내 공간 인지를 위한 음성안내 모듈을 개발하였다. 본 연구의 목적은 IoT 기반의 통합관제 기술을 활용하는 서비스 제공을 통해서 정보전달의 사각지대를 해소하고 장애인·노인의 효율적 재난 대응을 위해 맞춤형 재난정보 전달 및 대피지원 서비스를 구축하고 시범적용의 과정을 통해 문제점을 보완하여 최종적으로 재난으로부터 안전취약계층의 안전성을 향상시키는데 목적이 있다.

• The Journal of the Korea Contents Association
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• v.11 no.10
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• pp.457-466
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• 2011

In general, drivers need a self-interest information to decide their routes. So, non-governmental sectors, such as Internet Portal Company, make and provide user-oriented contents for drivers in a hurry. But, VMS which is the typical public media always provides traffic-information for drivers without weighting personal characteristics and considering transportation conditions. So in this research, we searched importance and preference of traffic-information contents as IPA(Importance-Performance Analysis)result. We can draw the conclusion that the improvement of traffic-information contents focused on users(drivers) is needed. Specially, we proposed the strategy of VMS according to traffic conditions.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.11a
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• pp.243-245
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• 2012

다양한 크기의 화면을 가진 타블릿 PC, 스마트폰, PC 환경에서 사용자에게 보다 나은 경험을 제공하기 위해, 기존 웹페이지의 수정 및 추가가 불가피해졌다. 하나의 원본으로 다양한 장치에 표현하고자하는 (One Source Multi Use) 요구사항과, 사용자에 맞춤형 경험을 제공하기 위한 요구가 급속도로 높아지고 있고, 그에 따른 표준화가 진행되어 왔다. Scalable Application Description Language (SADL) 은 이런 요구사항을 만족시키기 위한 언어이고, SADL 저작도구는 이러한 언어의 작성을 사용자가 쉽고 직관적으로 하는 것을 돕기 위해 개발한 도구이다. 본 논문에서는 SADL 저작도구에서 Block Layout Editor (BLE)의 설계 요구사항과, 그에 따른 구현결과를 설명한다. 또한 다양한 화면 크기의 단말을 위한 정보 (Delivery Context) 가 어떻게 사용되고, 화면에 표현되는지 설명한다. 앞으로 다양한 화면크기의 단말이 출시될수록, BLE 의 중요성은 더 증가할 것이고, 저작도구의 필수 요소로 자리매김할 것이다.

• Journal of the Society of Disaster Information
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• v.17 no.3
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• pp.465-486
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• 2021

Purpose: Since most disaster information systems are centered on non-disabled people, the reality is that there is a lack of disaster information delivery systems for the vulnerable, such as the disabled, the elderly, and children, who are relatively vulnerable to disasters. The purpose of the service is to improve the safety of the disabled and the elderly by eliminating blind spots of informatization and establishing customized disaster information services to respond to disasters through IoT-based integrated control technology. Method: The model at the core of this study is the disaster alert propagation model and evacuation support model, and it shall be developed by reflecting the behavioral characteristics of the disabled and the elderly in the event of a disaster. The disaster alert propagation model spreads disaster situations collected using IoT technology, and the evacuation support model uses geomagnetic field-based measuring technology to identify the user's indoor location and help the disabled and the elderly evacuate safely. Results: Demonstration model demonstration resulted in an efficient qualitative evaluation of indoor location accuracy, such as the suitability of evacuation route guidance and satisfaction of services from the user's perspective. Conclusion: Disaster information and evacuation support services were established for the safety vulnerable groups of mobile app for model verification. The disaster situation was demonstrated through experts in the related fields and the disabled by limiting it to the fire situation. It was evaluated as "satisfaction" in the adequacy of disaster information delivery and evacuation support, and its functional satisfaction and user UI were evaluated as "normal" due to the nature of the pilot model. Through this, the disaster information and evacuation support services presented in this study were evaluated to support the safety vulnerable groups to a faster disaster evacuation without missing the golden time of disaster evacuation.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.10 no.4
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• pp.24-35
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• 2011

This paper demonstrates a methodology of integrated operation and management system for intermodal connectivity center (ICC), which is planning to be build up as a large scale public transit facilities for green growth strategy by the national government. The ICC needs to be capable of providing the integrated location based information for the public transit users in terms of collaborating a variety of transit modes and complex facility in a large scale center. Recently, the upcoming information and communication technologies enable to come up with real time information provision on nomadic and portable devices, i.e. smart phones and/or tablet PCs, as what the users actually need to get on demand. In order to provide the public transit users in ICC with the integrated information on their smart phones for example, the integrated operation and management system plays a key role to collect the data utilizing the wireless communication with real time location tracking and to manage them to be effective and operational sources for applicable personalized services. Thus, this paper defines a type of services, subsystems, and relevant technologies for the system integration so called a "Smart Garatagi Service" and shows a filed test demonstration case in the existing airport terminal, Gimpo Domestic.

• Journal of Broadcast Engineering
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• v.16 no.2
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• pp.360-371
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• 2011

T-DMB hybrid data service provides advanced data services while maintaining backward compatibility with legacy T-DMB receivers by using hybrid BIFS technology enabling distributed delivery of scene description information and object description information. This paper presents the hybrid service authoring framework implementing hybrid BIFS technology for creating contents for distributed delivery, and the results of experiments by using it. Hybrid service authoring framework is comprised of service creation system, service management system, and contents offering system. It enables the creation of combined hybrid data service and the splitting of the contents into two parts for ecah delivery network, data for broadcasting network and the data for mobile network. It also enables the managements of the contents. The feasibility of advanced data services while maintaining backward compatibility with the legacy T-DMB receiver has been proved by the contents created by using the hybrid authoring framework presented in this paper.