• Title/Summary/Keyword: Location Based Services

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A Dynamic Location Recognition Technique for Location-based Service (위치 기반 서비스를 위한 동적 위치 인지 기법)

  • Jung, Chang-Hun;Kim, Chul-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.7
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    • pp.4562-4572
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    • 2014
  • The recent location-based services of smart-phones are some of the rapidly growing mobile technology. This paper proposes a technique for modifying the change cycle of location-based services according to the specific location using location based services. This technique shows that the cycle of the location-based services can be customized based on the location. As a result, this technique proposes a process that can reduce the waste of resources compared to the location based services of a constant cycle.

A Study on Location-Based Services Based on Semantic Web

  • Kim, Jong-Woo;Kim, Ju-Yeon;Kim, Chang-Soo
    • Journal of Korea Multimedia Society
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    • v.10 no.12
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    • pp.1752-1761
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    • 2007
  • Location-based services are a recent concept that integrates a mobile device's location with other information in order to provide added value to a user. Although Location-based Services provide users with comfortable information, it is a complex task to manage and share heterogeneous and numerous data in decentralized environments. In this paper, we propose the Semantic LBS Model as one of the solution to resolve the problem. The Semantic LBS Model is a LBS middleware model that includes an ontology-based data model for LBS POI information and its processing mechanism based on Semantic Web technologies. Our model enables POI information to be described and retrieved over various domain-specific ontologies based on our proposed POIDL ontology. This mechanism provide rich expressiveness, interoperability, flexibility in describing and using information about POls, and it can enhance POI retrieval services.

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Hierarchical Structured Multi-agent for Distributed Databases in Location Based Services

  • Mateo Romeo Mark A.;Lee Jaewan;Kwon Oh-Hyun
    • The Journal of Information Systems
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    • v.14 no.3
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    • pp.17-22
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    • 2005
  • Location management is very important in location-based services to provide services to the mobile users like banking, city guides and many more. Ubiquitous and mobile devices are the source of data in location management and its significant operations are update and search method. Some studies to improve these were presented by using optimal sequential paging, location area scheme and hierarchical database scheme. In addition, not all location services have the same access methods on data and it lead to difficulties of providing services. A proposed location management of multi-agent architecture is presented in this study. It shows the coordination of the agents on the distributed database of location-based services. The proposal focuses on the location management of the mobile object presented in a hierarchical search and update. Also, it uses a nearest neighbor technique for efficient search method of mobile objects.

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Design of Moving Objects Server for Location Based Services

  • Cho, Dae-Soo;Min, Kyoung-Wook;Lee, Jong-Hun
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.157-162
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    • 2002
  • Recently, location based services, which make use of location information of moving objects, have obtained increasingly high attention. The moving objects are time-evolving spatial objects, that is, their locations are dynamically changed as time varies. Generally, GIS server stores and manages the spatial objects, of which locations are rarely changed. The traditional GIS server, however, has a difficulty to manage the moving objects, due to the fact of locations being frequently changed and the trajectory information (past locations of moving objects) being managed. In this paper, we have designed a moving object server, which stores and manages the locations in order to support various location based services. The moving object server is composed of a location acquisition component, a location storage component, and a location query component. The contribution of this paper is that we integrate the each work for location acquisition, storage, and query into a moving objects server.

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A Study on the Effect of Location-based Service Users' Perceived Value and Risk on their Intention for Security Enhancement and Continuous Use: With an Emphasis on Perceived Benefits and Risks (위치기반서비스 사용자의 지각된 가치와 위험이 보안강화의도와 지속이용의도에 미치는 영향에 관한 연구: 지각된 혜택과 위험을 중심으로)

  • Park, Kyung Ah;Lee, Dae Yong;Koo, Chulmo
    • Asia pacific journal of information systems
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    • v.24 no.3
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    • pp.299-323
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    • 2014
  • The reason location based service is drawing attention recently is because smart phones are being supplied increasingly. Smart phone, basically equipped with GPS that can identify location information, has the advantage that it can provide contents and services suitable for the user by identifying user location accurately. Offering such diverse advantages, location based services are increasingly used. In addition, for use of location based services, release of user's personal information and location data is essentially required. Regarding personal information and location data, in addition to IT companies, general companies also are conducting various profitable businesses and sales activities based on personal information, and in particular, personal location data, comprehending high value of use among personal information, are drawing high attentions. Increase in demand of personal information is raising the risk of personal information infringement, and infringements of personal location data also are increasing in frequency and degree. Therefore, infringements of personal information should be minimized through user's action and efforts to reinforce security along with Act on the Protection of Personal Information and Act on the Protection of Location Information. This study aimed to improve the importance of personal information privacy by empirically analyzing the effect of perceived values on the intention to strengthen location information security and continuously use location information for users who received location-based services (LBS) in mobile environments with the privacy calculation model of benefits and risks as a theoretical background. This study regarded situation-based provision, the benefit which users perceived while using location-based services, and the risk related to personal location information, a risk which occurs while using services, as independent variables and investigated the perceived values of the two variables. It also examined whether there were efforts to reduce risks related to personal location information according to the values of location- based services, which consumers perceived through the intention to strengthen security. Furthermore, it presented a study model which intended to investigate the effect of perceived values and intention of strengthening security on the continuous use of location-based services. A survey was conducted for three hundred ten users who had received location-based services via their smartphones to verify study hypotheses. Three hundred four questionnaires except problematic ones were collected. The hypotheses were verified, using a statistical method and a logical basis was presented. An empirical analysis was made on the data collected through the survey with SPSS 12.0 and SmartPLS 2.0 to verify respondents' demographic characteristics, an exploratory factor analysis and the appropriateness of the study model. As a result, it was shown that the users who had received location-based services were significantly influenced by the perceived value of their benefits, but risk related to location information did not have an effect on consumers' perceived values. Even though users perceived the risk related to personal location information while using services, it was viewed that users' perceived value had nothing to do with the use of location-based services. However, it was shown that users significantly responded to the intention of strengthening security in relation to location information risks and tended to use services continuously, strengthening positive efforts for security when their perceived values were high.

A Feasibility Study on the Location Based Services under Ubiquitous Environment (유비쿼터스 환경에서 위치기반서비스의 활용성 연구)

  • Baek, Dong-Hyun;Jin, Hee-Chae
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.30 no.3
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    • pp.1-11
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    • 2007
  • The purpose of this study is to predict promising Location Based Services under an ubiquitous environment based on their technical characteristics, which is strongly required in rapidly changing circumstances with ubiquitous computing and Broadband Convergence Network (BcN). To begin with, this study proposes a classification scheme of ubiquitous services and defines five technology factors required for ubiquitous services. Next, this study collects a number of ubiquitous services from previous researches and classified them according to the classification scheme of ubiquitous services. And then, technical importance of the collected ubiquitous services are evaluated in terms of technology factors by using service-technology metrics. Finally, a set of important Location Based Services under ubiquitous environments and the correlations between technology factors are identified by using the evaluation results.

Multilevel Location Trigger in Distributed Mobile Environments for Location-Based Services

  • Min, Kyoung-Wook;Nam, Kwang-Woo;Kim, Ju-Wan
    • ETRI Journal
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    • v.29 no.1
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    • pp.107-109
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    • 2007
  • In location-based services, most trigger technologies have been implemented on the server side by periodically requesting the locations of mobile phones from mobile network servers. However, bottlenecks and communication interruptions occur when the servers are overloaded by trigger requests. In this letter, we propose a new multilevel location trigger specification which distributes the event detecting role to mobile phones and redesigns the location triggering into a multilevel step. Our suggested location trigger specification can reduce bottlenecks caused by triggers in a mobile core network and reduce power consumption caused by embedded GPS devices in mobile phones.

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Necessity of Grade Designation for Location Information (위치정보 등급제 도입의 필요성)

  • Kim Tae-Sung;Yoo Hye-Won;Nam Kwang-Woo
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.2B
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    • pp.164-173
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    • 2006
  • It is essential to ensure public use of and privacy of location information for promoting the location based services. The grade designation for location information is required to accomplish them. The grade designation for location information can increase the reliability of location information and reinforce the right of choice for user. Therefore the institution of grade designation for location information should be introduced rapidly to keep up with the growth of the location based services industry.

Privacy Protection Model for Location-Based Services

  • Ni, Lihao;Liu, Yanshen;Liu, Yi
    • Journal of Information Processing Systems
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    • v.16 no.1
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    • pp.96-112
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    • 2020
  • Solving the disclosure problem of sensitive information with the k-nearest neighbor query, location dummy technique, or interfering data in location-based services (LBSs) is a new research topic. Although they reduced security threats, previous studies will be ineffective in the case of sparse users or K-successive privacy, and additional calculations will deteriorate the performance of LBS application systems. Therefore, a model is proposed herein, which is based on geohash-encoding technology instead of latitude and longitude, memcached server cluster, encryption and decryption, and authentication. Simulation results based on PHP and MySQL show that the model offers approximately 10× speedup over the conventional approach. Two problems are solved using the model: sensitive information in LBS application is not disclosed, and the relationship between an individual and a track is not leaked.

Position Information Storage System based on RDBMS

  • Jang, In-Sung;Cho, Dae-Soo;Park, Jong-Hyun
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.897-899
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    • 2003
  • Recently, owing to the rapid progress of Telecommunication technology, the increase of wireless internet’s subscriber and diffusion of wireless device, LBS (Location Based Services) which take advantage of user's location information and receive information in concerning with user’s location to be essential services. Location Based Services are related the moving objects which change their locations through time. Therefore, to provide location-based services efficiently, it is required that an efficient system which could acquire, store, and query the large number of locations. In this paper, we design management system to insert and search a huge number of Moving Object based on Legacy Relational Database.

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