oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
On Geo Location Services for Telecom Operators  [PDF]
Dmitry Namiot,Manfred Sneps-Sneppe
Computer Science , 2015,
Abstract: This paper presents location based service for telecom providers. Most of the location-based services in the mobile networks are introduced and deployed by Internet companies. It leaves for telecom just the role of the data channel. Telecom providers should use their competitive advantages and offer own solutions. In this paper, we discuss the sharing location information via geo-messages. Geo messages let mobile users share location information as signatures to the standard messages (e.g., email, SMS). Rather than let some service constantly monitor (poll) the user location (as the most standalone services do) or share location info within any social circle (social network check-in, etc.) The Geo Messages approach lets users share location data on the peer to peer basis. Users can share own location info with any existing messaging systems. And messaging (e.g., SMS) is the traditional service for telecom
Implementation of Location based Services in Android using GPS and Web Services
Manav Singhal,Anupam Shukla
International Journal of Computer Science Issues , 2012,
Abstract: Location based Services offer many advantages to the mobile users to retrieve the information about their current location and process that data to get more useful information near to their location. With the help of A-GPS in phones and through Web Services using GPRS, Location based Services can be implemented on Android based smart phones to provide these value-added services: advising clients of current traffic conditions, providing routing information, helping them find nearby hotels. In this paper, we propose the implementation of Location based services through Google Web Services and Walk Score Transit APIs on Android Phones to give multiple services to the user based on their Location.
Warehousing Location Decision in Northern Europe: Transportation Mode Perspective  [PDF]
Olli-Pekka Hilmola
Quality Innovation Prosperity , 2011,
Abstract: Manufacturing employment has continuously declined in developed economies for more than decade time, but service sector in turn has significantly grown. Services also include warehousing, which connects customers and globally concentrated manufacturing units together. In this manuscript we examine location criteria for warehouses in Northern European companies (Finland and Sweden) as well as location of their warehouse network in larger Europe. Our research shows based on multiyear survey that primarily warehouses are established to have: (1) low distribution costs, (2) road transportation connection, and (3) assembly/manufacturing units are near-by. Currently in different contexts is being emphasized intermodal transports, railway connectivity, future potential of location as well as low labour cost are considered to have secondary up to quinary importance. In country level differences we show based on completed surveys that Finnish companies are more active in Central and Eastern European Countries (CEEC), while Swedish companies have been extremely cautious with this regard.
LOCATION-BASED SERVICES USING SIP  [PDF]
Abdullah Azfar,,Md. Sakhawat Hossen,,María José Peroza Marval,Razib Hayat Khan
International Journal of Engineering Science and Technology , 2010,
Abstract: Due to the popularity of Location-Based Services and IP telephony, we decided to review a number of different proposals to implement Location-Based Services over a SIP-based mobile network. The result is an interesting overview about the potential functionalities of Location-Based Services and the capabilities of SIP for implementingthese services.
A Glimpse into the Research Space of Location Based Services  [cached]
Chen Wei Tan,Mohammod Sazid Zaman Khan,Thilek Silvadorai,Toni Anwar
Journal of Advances in Information Technology , 2012, DOI: 10.4304/jait.3.2.91-106
Abstract: Location Based Services are becoming an integral part of the wider telecommunication scenario. However, the approaches to provide Location Based Services and the research issues in this area are diverse and broad. In this paper, the present state of the Location Based Service systems has been analyzed. The analysis confirmed the heterogeneity of the research problems associated with Location Based Services as well as the array of solutions to address these problems. On one hand, the study carried out will enable one to get some idea about essential features for the implementation of a Location Based Service system. On the other hand, it is strongly believed that this study will assist researchers and the industry to get a sense of the multidimensional research space of Location Based Services which will be helpful for later exploration of this field.
Location, Location, Location: Data-Intensive Distributed Computing in the Cloud  [PDF]
Michael Luckeneder,Adam Barker
Computer Science , 2013,
Abstract: When orchestrating highly distributed and data-intensive Web service workflows the geographical placement of the orchestration engine can greatly affect the overall performance of a workflow. Orchestration engines are typically run from within an organisations' network, and may have to transfer data across long geographical distances, which in turn increases execution time and degrades the overall performance of a workflow. In this paper we present CloudForecast: a Web service framework and analysis tool which given a workflow specification, computes the optimal Amazon EC2 Cloud region to automatically deploy the orchestration engine and execute the workflow. We use geographical distance of the workflow, network latency and HTTP round-trip time between Amazon Cloud regions and the workflow nodes to find a ranking of Cloud regions. This combined set of simple metrics effectively predicts where the workflow orchestration engine should be deployed in order to reduce overall execution time. We evaluate our approach by executing randomly generated data-intensive workflows deployed on the PlanetLab platform in order to rank Amazon EC2 Cloud regions. Our experimental results show that our proposed optimisation strategy, depending on the particular workflow, can speed up execution time on average by 82.25% compared to local execution. We also show that the standard deviation of execution time is reduced by an average of almost 65% using the optimisation strategy.
Mobility through Location-based Services at University
S. Martín,E. Sancristobal,R. Gil,M. Castro
International Journal of Interactive Mobile Technologies (iJIM) , 2008,
Abstract: Location tracking systems are becoming morerelevant in many new environments, due to the fact they thecore of context aware applications. This new concept canimprove the way universities provide services and a widenumber of companies do business. Inside university area,users location (both students, teachers and staff) gives rise toa new kind of services based on their profile and on the areain which the user is in each moment, allowing apersonalization of the offered contents. The present papershows how location-based applications can be developed formobile devices through a middleware that allows differentlocation methods, such as Wi-Fi and RFID. Finally somelocation-based applications are given showing possibleexamples in different environments.
PrivLoc: Preventing Location Tracking in Geofencing Services  [PDF]
Jens Mathias Bohli,Dan Dobre,Ghassan O. Karame,Wenting Li
Computer Science , 2014,
Abstract: Location-based services are increasingly used in our daily activities. In current services, users however have to give up their location privacy in order to acquire the service. The literature features a large number of contributions which aim at enhancing user privacy in location-based services. Most of these contributions obfuscate the locations of users using spatial and/or temporal cloaking in order to provide k-anonymity. Although such schemes can indeed strengthen the location privacy of users, they often decrease the service quality and do not necessarily prevent the possible tracking of user movements (i.e., direction, trajectory, velocity). With the rise of Geofencing applications, tracking of movements becomes more evident since, in these settings, the service provider is not only requesting a single location of the user, but requires the movement vectors of users to determine whether the user has entered/exited a Geofence of interest. In this paper, we propose a novel solution, PrivLoc, which enables the privacy-preserving outsourcing of Geofencing and location-based services to the cloud without leaking any meaningful information about the location, trajectory, and velocity of the users. Notably, PrivLoc enables an efficient and privacy-preserving intersection of movement vectors with any polygon of interest, leveraging functionality from existing Geofencing services or spatial databases. We analyze the security and privacy provisions of PrivLoc and we evaluate the performance of our scheme by means of implementation. Our results show that the performance overhead introduced by PrivLoc can be largely tolerated in realistic deployment settings.
Aggregate Estimations over Location Based Services  [PDF]
Weimo Liu,Md Farhadur Rahman,Saravanan Thirumuruganathan,Nan Zhang,Gautam Das
Computer Science , 2015,
Abstract: Location based services (LBS) have become very popular in recent years. They range from map services (e.g., Google Maps) that store geographic locations of points of interests, to online social networks (e.g., WeChat, Sina Weibo, FourSquare) that leverage user geographic locations to enable various recommendation functions. The public query interfaces of these services may be abstractly modeled as a kNN interface over a database of two dimensional points on a plane: given an arbitrary query point, the system returns the k points in the database that are nearest to the query point. In this paper we consider the problem of obtaining approximate estimates of SUM and COUNT aggregates by only querying such databases via their restrictive public interfaces. We distinguish between interfaces that return location information of the returned tuples (e.g., Google Maps), and interfaces that do not return location information (e.g., Sina Weibo). For both types of interfaces, we develop aggregate estimation algorithms that are based on novel techniques for precisely computing or approximately estimating the Voronoi cell of tuples. We discuss a comprehensive set of real-world experiments for testing our algorithms, including experiments on Google Maps, WeChat, and Sina Weibo.
Privacy in Location Based Services: Primitives Toward the Solution  [PDF]
Abedelaziz Mohaisen,Dowon Hong,DaeHun Nyang
Computer Science , 2009, DOI: 10.1109/NCM.2008.137
Abstract: Location based services (LBS) are one of the most promising and innovative directions of convergence technologies resulting of emergence of several fields including database systems, mobile communication, Internet technology, and positioning systems. Although being initiated as early as middle of 1990's, it is only recently that the LBS received a systematic profound research interest due to its commercial and technological impact. As the LBS is related to the user's location which can be used to trace the user's activities, a strong privacy concern has been raised. To preserve the user's location, several intelligent works have been introduced though many challenges are still awaiting solutions. This paper introduces a survey on LBS systems considering both localization technologies, model and architectures guaranteeing privacy. We also overview cryptographic primitive to possibly use in preserving LBS's privacy followed by fruitful research directions basically concerned with the privacy issue.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.