• 인터넷정보학회논문지
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• 제11권3호
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• pp.53-63
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• 2010

본 연구는 복합형 실버타운에 입주한 실버세대들의 생활편의 제공과 생활안전을 위하여 필요한 u-서비스 시스템의 설계 및 구현에 대한 것이다. 개발된 u-서비스 제공 시스템은 입주자들에게 개별적으로 제공된 단말기의 건물 내 위치정보를 기반으로 긴급호출기능의 안심서비스와 공동 출입문 자동제어, 엘리베이터 자동운행, 세대 현관 원격제어와 같은 생활편의 서비스를 제공한다. 구현된 u-서비스 제공 시스템은 고급형 실버타운에 실제 적용하여 서비스를 제공함으로써 성능 및 기능을 검증하였다. 본 연구 결과는 실버타운 외에도 노약자를 위한 의료시설, 초고층의 복합형 주거건물, 고급 아파트단지 등에도 충분히 적용가능하다고 사료된다.

• ETRI Journal
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• 제30권3호
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• pp.421-431
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• 2008

In this paper, we offer a new technique to discover frequent spatiotemporal patterns from a moving object database. Though the search space for spatiotemporal knowledge is extremely challenging, imposing spatial and timing constraints on moving sequences makes the computation feasible. The proposed technique includes two algorithms, AllMOP and MaxMOP, to find all frequent patterns and maximal patterns, respectively. In addition, to support the service provider in sending information to a user in a push-driven manner, we propose a rule-based location prediction technique to predict the future location of the user. The idea is to employ the algorithm AllMOP to discover the frequent movement patterns in the user's historical movements, from which frequent movement rules are generated. These rules are then used to estimate the future location of the user. The performance is assessed with respect to precision and recall. The proposed techniques could be quite efficiently applied in a location-based service (LBS) system in which diverse types of data are integrated to support a variety of LBSs.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2005년도 공동추계학술대회
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• pp.147-156
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• 2005

In developing the ubiquitous computing technology based services (ubiquitous services), evaluating how much value of those services is created or added is very crucial. The efforts to evaluate the ubiquitous services have been progressed in two perspectives - technical perspective and behavioral perspective. Despite its importance, however, the methodologies which integrate both perspectives have been still very rare. Hence, this paper aims perspectives have been still very rare. Hence, this paper aims to propose an integrated ubiquitous service valuation methodology based on the multi-layered approach including technical and behavioral perspectives. To do so, we conducted a case study with currently existing location based service (LBS) such as navigation systems by conducting focus group interview (FGI) and field survey.

• 디지털산업정보학회논문지
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• 제6권3호
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• pp.1-8
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• 2010

Recently, the missing due to the heinous crimes occurred in succession has been the focus of attention, so measures for these are urgently needed. So, it is necessary that we need to check and take care the weak like children, women, the elderly with dementia and insane person to prevent these social problems. This study is location-based service that suggests the tracking system and way to guard a family and property from the various risk factors which are possible in our life. To acquire the location of the user who is in motion, a communications network technologies were integrated and the system will be able to be monitoring in real time through the website. So, it is convenient and safe because it is possible to use anywhere. Concretely, it was described around location-based service, GPS system, tracking system, process of the service solution and composition for the system. Also, the way to activate the system will be suggested. The final suggested system was verified the possibility through the placement. With this, i will offer effective measures which is more convenient to use and reliable.

• 한국정보통신학회논문지
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• 제14권2호
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• pp.329-334
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• 2010

무선 이동 통신망의 발전으로 단말의 현재 위치를 기반으로 한 다양한 위치 기반 서비스가 출현하고 있다. 와이브로 망과 같은 모바일 와이맥스 망에서도 LBS (Location Based Service) 서비스의 제공은 망 기술의 경쟁력을 제고하기 위해 매우 중요하다. 이를 위해, 와이맥스 포럼은 최근 LBS 서비스 제공을 위한 망 구조 및 프로토콜을 네트워크 워킹 그룹의 release 1.5 문서에 포함하여 표준화 하였다. 그동안 와이브로 망에서 측위에 관한 많은 연구가 있어 왔지만, 최근 확립된 와이맥스 포럼의 LBS 표준을 고려하여 표준에 적합한 위치 결정 방식에 관한 연구는 아직 없다. 본 논문에서는 와이맥스 포럼의 LBS 표준을 고려하여, 이에 부합하는 위치 결정 방식을 제안한다. 이 방식은, RTD (Round Trip Delay) 방식을 결합하여 기존 TDOA 방식을 개선하였다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.280-282
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• 2004

According as IT environment changes from client/server system to the open system based on web service technologies, the exchange of data and services between independent applications and service servers in web environment is observed Recently. In this points, it is necessary that Geographic Information Systems, Spatial Imagery Information Systems, Intelligent Transportation Systems, and Global Navigation Satellite Systems based on the location and geometry information are inter-related each other. But, the inter-relation of these systems is very difficult because of the closed system architecture, different information format, and the absence of interoperability technologies. In this Paper, we describe 4S integration system based web service technologies that accept the international standard as WFS, WCS, WRS of OGC (OpenGIS Consortium) and UDDI, SOAP, WSDL of W3C. In detail, we study the system architecture design and implementation of traffic information service, routing service, and tracing service. These services are consisting of the data schema based on XML and GML, various functions of each layered service, each server platform, and web server. Specially, we represent that GML is being applied to a wide range of location-based services, telematics, and intelligent transportation

• 대한안전경영과학회지
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• 제12권1호
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• pp.113-118
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• 2010

"Domestic delivery service" is defined the service to deliver goods or packages from point of senders to point of receiver. With the characteristics of door to door, it is must a service provider should know the exact location of destination assuring best utilization of moving path. Generally, location information consist of postal code and address only, which result in difficulties to identify the precise location of destination. It is relatively less correlated between the information that address refers and practical location in Korea address system. For example, the next door to house number 100 is not always house number 101. Therefore, a delivery man additionally uses a paper map or a GPS navigation which carry extra job to input every code of location to the device in order to know precise location. It is also very inconvenient that every delivery man identify the location that address information refers and make a personal decision of the optimum moving path dropping each destination without calculating provisioning process of whole delivery path. As explained above, it is inefficient to find information delivery service required and to generate the optimum path. In results, these difficulties bring in delay of service and increase of cost. In this point, the contents of the thesis suggest a GPS navigation system easy to obtain accuracy of delivery information which enables to automate optimum moving path based on RFID which contains location information.

• 한국IT서비스학회지
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• 제13권4호
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• pp.205-230
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• 2014

In recent years, the social network service (SNS) and the location-based social network service (LBSNS) industry is expanding and the competition within the field is increasing much more. Since 2010, the full-scaled studies of SNS and LBSNS have begun. With the growth of SNS and LBSNS markets, SoLoMo (Social-Local-Mobile) is also becoming the trend for applications in different fields. However, despite the importance of SoLoMo, there have been little studies on the characteristics of SoLoMo applications. The purpose of this research is to investigate the effect of characteristics and perceived privacy risk of mobile location-based SNS on intention to use SoLoMo applications. For the purpose, we proposed a SoLoMo service acceptance model with TAM (Technology Acceptance Model) and the characteristics of SoLoMo applications. The characteristics consist of three factors, i.e. SNS, location, and mobile-related factors. This study also considered a gamification and a perceived privacy risk factor influencing on SoLoMo service usage in our proposed research model. The results of our empirical analysis using partial least squares (PLS) method show that the characteristics of SoLoMo applications including SNS, location, and mobile-related features, gamification, and perceived privacy risk have partially an effect on intention to use SoLoMo applications. Based on these results, SoLoMo-related companies will be able to increase the usage of SoLoMo services by differentiating their own strategies with these factors influencing on SoLoMo services.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2012년도 춘계학술대회
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• pp.114-116
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• 2012

스마트 모바일 기기의 보편화로 개인 위치 정보에 기반한 다양한 서비스가 가능해졌다. 또한 모바일 기기를 이용한 소셜 미디어 이용자수가 대폭 증가함에 따라 위치에 기반한 다양한 소셜 미디어 서비스에 대한 수요가 증대되고 있다. 이 논문에서는 위치에 기반한 소셜 미디어 데이터베이스에 표준 API를 사용한 접근과 결과의 분석으로 사용자가 필요로 하는 정보를 생성하고 실시간 모바일 서비스를 하기 위한 기술적 기법들에 대하여 소개하고 연구 결과를 보인다.

• Journal of Information Technology Applications and Management
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• 제13권3호
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• pp.59-74
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• 2006

According to developing Wireless Communication, not only a location based service at the outside but also a location based service at the inside was more increased socially. This paper proposes the efficient algorithm to locate a transfer object in frequent change of indoor environment using indoor location tracking system we develop ourself. Proposing algorithm in this paper can locate a transfer object using the Fingerprint, one of the Location Tracking techniques which are used in general to minimize error data between Location Tracking System and Fingerprint, using this way that corrects location data as KF apply to result data can improve accuracy of a transfer object. At last we are going to compare and analyze existing typical triangulation with proposed Indoor location tracking system to demonstrate algorithm efficiency for proposed Indoor location tracking system.