4,071 research outputs found
WordCrowd : a location-based application to explore the city based on geo-social media and semantics
Full text linkWordCrowd is a dynamic location-based service that visualizes and analyzes geolocated social media data. By spatially clustering the data, areas of interest and their descriptions can be extracted and compared on different geographical scales. When walking through the city, the application visualizes the nearest areas of interest and presents these in a word cloud. By aggregating the data based on the country of origin of the original poster, we discover differences and similarities in tourist interest between different countries. This work is part of the project Eureca: European Region Enrichment in City Archives and Collections of Ghent University (IDLab, CartoGIS), the Technical University of Vienna (Research Group Cartography) and several city and state archives from Ghent and Vienna
LBS and TeleCartography II: About the book
No full textThis book is based on a series of symposiums on Location Based Services and Telecartography that have been held since 2002 at the Vienna University of Technology, the Polytechnical University HongKong and Salzburg Research. The meetings themselves were a response to technological developments in miniaturizing devices for telecommunication, computing and display and an increased interest in both incorporating cartographic presentations on such mobile devices and developing services that are specific to a particular location. The broad variety of disciplines involved in this research and the differences in approaching the basic problems is probably typical of a developing field of interdisciplinary research. However, some main areas of research and development in the emerging area of LBS and Telecartography can now be identified. The contributions to this book are selected from the full papers of the 5th Symposium on LBS and TeleCartography and reflect the main areas of interest: positioning, modelling and awareness, visualisation and cartographic communication and application development. It follows the book "Location Based Services and TeleCartography" (Gartner et al 2007), which reflects a selection of papers of the first symposia
Eine prägende Gestalt der österreichischen Kartografie: Ingrid Kretschmer
No full textIm Gastblogbeitrag würdigt Georg Gartner anlässlich ihres 15. Todestages eine Kartografiepionierin, die als eine der wenigen Frauen ihrer Generation in der österreichischen Wissenschaft dauerhaft eine leitende Rolle einnahm
Collective intelligence based mobile navigation in a smart environment
No full textWith more and more active or passive devices/sensors being augmented, our environment has become smarter. Also in the era of Web 2.0, the concept of "Web-as-participation-platform" has been fully adopted in the ICT society. This paper focuses on the question of how mobile navigation services can benefit from Smart Environment/Ambient Intelligence and Web 2.0/collective intelligence. After setting up a smart environment, a mobile navigation service is designed to support users' wayfinding, facilitate users' interaction and annotation with the smart environment, and collect user generated content (UGC). Based on UGC, this paper designs several collective intelligence based route calculation algorithms to illustrate the benefits of combining mobile navigation services, smart environment, and Web 2.0, such as providing "the nicest route", "the least complex route", "the most popular route", and "the optimal route". Finally, this paper concludes that mobile navigation services in smart environment can help to explicitly and implicitly collect user generated content (collective intelligence), and thus provide users with a new experience and smart wayfinding support (e.g., collective intelligence based route recommendations)
A Survey of Mobile Indoor Navigation Systems
No full textWith the gradual maturating of ubiquitous computing and the rapid advances in mobile devices and wireless communication, indoor Location Based Services have gained increasing interests as an important application of indoor ubiquitous computing. In this paper, an evaluation framework which combines the key aspects of indoor navigation for investigating mobile indoor navigation systems is proposed. Based on this evaluation framework, we give a comparison and analysis of the current mobile indoor navigation systems, and conclude that "indoor navigation systems are still on an early development stage". We also identify some challenges which require further research and development, such as sensor fusion, contextawareness, route communication, seamless switch between indoor and outdoor navigation, and ubiquitous indoor computing
LBS and TeleCartography: About the book
No full textThis book is based on a series of symposiums on Location Based Services and Telecartography that have been held since 2002 at the Vienna University of Technology. The meetings themselves were a response to technological developments in miniaturizing devices for telecommunication, computing and display and an increased interest in both incorporating cartographic presentations on such mobile devices and developing services that are specific to a particular location. The broad variety of disciplines involved in this research and the differences in approaching the basic problems is probably typical of a developing field of interdisciplinary research. However, some main areas of research and development in the emerging area of LBS and Telecartography can now be identified. The contributions to this book are mainly selected from the papers of the 3rd Symposium on LBS and TeleCartography and reflect the main areas of interest: positioning, modelling and awareness, visualisation and cartographic communication and application development
Impact of restricted display size on spatial knowledge acquisition in the context of pedestrian navigation
No full textIn this paper the influence of the display size on the acquisition of spatial knowledge is investigated. The acquisition of spatial knowledge based on presentation forms with different display sizes has been analysed in an empirical test for pedestrian navigation. This contribution describes and interprets the test and results and gives an outlook on the overall importance for future application developments in the context of LBS, as mobile systems typically use small displays and the overall concern exists, that these displays can not communicate any useful spatial information in typical map form to pedestrians
Ways of Walking - Developing a Pedestrian Typology for Personalised Mobile Information Systems
No full textIn recent years, technological progress and an increasing amount of ubiquitously available information set the stage for the development of mobile navigation tools for pedestrians. However, the vast quantity of accessible navigational and environmental information aggravates effective information extraction and necessitates tailoring wayfinding instructions and additional location based information to individual needs. In order to facilitate the provision of customised information and to avoid redundant information, we currently determine a pedestrian typology using a multi-method approach considering motion behaviour as well as underlying preferences and individual attitudes. We developed a methodological set-up including qualitative-interpretative and quantitative-statistical data, which will lead to the determination of a typology of lifestyle-based pedestrian mobility styles. In this contribution we present results from the first of two consecutive empirical phases based on datasets of over 100 trajectories observed by shadowing methods and 130 interviews; furthermore we highlight differences in the outcomes resulting from data collected by different empirical methods and in different investigation areas (indoor and outdoor)
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