2,955 research outputs found

    M-GIS - Mobile and interoperable access to geographic information

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    This paper describes an architecture which can be used toaccess geographic information from mobile devices with limited displayand processing characteristics, such as Personal Digital Assistants (PDA)or Mobile Phones. The information may come from different sourcesleading to an interoperable solution.M-GIS obtains geographic information from sources described using GeogxraphyMarkup Language (GML) from one or more Web FeatureServers allowing an access independent from its format or physical location,as long as the information is according to the specification.Using XSLT, GML is transformed to a graphical format in Scalable VectorGraphics (SVG) which can then be manipulated in the mobile device.M-GIS follows a client/server architecture and the client application wasdeveloped using Java Mobile Information Device Profile technology.The results enable us to conclude that the mobile system, designed anddeveloped with the use of open standards and representation formats toaccess geographic information, is a viable solution with some limitations.The main limitations of this approach have to do with the amount ofinformation which the client can, at the moment, accommodate

    M-GIS - Mobile and interoperable access to geographic information

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    This paper describes an architecture which can be used toaccess geographic information from mobile devices with limited displayand processing characteristics, such as Personal Digital Assistants (PDA)or Mobile Phones. The information may come from different sourcesleading to an interoperable solution.M-GIS obtains geographic information from sources described using GeogxraphyMarkup Language (GML) from one or more Web FeatureServers allowing an access independent from its format or physical location,as long as the information is according to the specification.Using XSLT, GML is transformed to a graphical format in Scalable VectorGraphics (SVG) which can then be manipulated in the mobile device.M-GIS follows a client/server architecture and the client application wasdeveloped using Java Mobile Information Device Profile technology.The results enable us to conclude that the mobile system, designed anddeveloped with the use of open standards and representation formats toaccess geographic information, is a viable solution with some limitations.The main limitations of this approach have to do with the amount ofinformation which the client can, at the moment, accommodate

    Internet of things

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    Manual of Digital Earth / Editors: Huadong Guo, Michael F. Goodchild, Alessandro Annoni .- Springer, 2020 .- ISBN: 978-981-32-9915-3Digital Earth was born with the aim of replicating the real world within the digital world. Many efforts have been made to observe and sense the Earth, both from space (remote sensing) and by using in situ sensors. Focusing on the latter, advances in Digital Earth have established vital bridges to exploit these sensors and their networks by taking location as a key element. The current era of connectivity envisions that everything is connected to everything. The concept of the Internet of Things(IoT)emergedasaholisticproposaltoenableanecosystemofvaried,heterogeneous networked objects and devices to speak to and interact with each other. To make the IoT ecosystem a reality, it is necessary to understand the electronic components, communication protocols, real-time analysis techniques, and the location of the objects and devices. The IoT ecosystem and the Digital Earth (DE) jointly form interrelated infrastructures for addressing today’s pressing issues and complex challenges. In this chapter, we explore the synergies and frictions in establishing an efficient and permanent collaboration between the two infrastructures, in order to adequately address multidisciplinary and increasingly complex real-world problems. Although there are still some pending issues, the identified synergies generate optimism for a true collaboration between the Internet of Things and the Digital Earth

    Building the IDECi-UIB: the scientific spatial data infrastructure node for the Balearic Islands University

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    Technical and methodological enhancements in Information Technologies (IT) and Geographical Information Systems (GIS) has permitted the growth in Spatial Data Infrastructures (SDI) performance. In this way, their uses and applications have grown very rapidly. In the scientific and educational working fields, different institutions and organisations have bet for its use enforcing information exchange that allows researchers to improve their studies as well as give a better dissemination within the scientific community. Therefore, the GIS and Remote Sensing Service (SSIGT) at the Balearic Islands University (UIB) has decided to build and launch its own SDI to serve scientific Geo-Information (GI) throughout the Balearic Islands society focussing on the university community. By these means it intends to boost the development of research and education focusing on the field of spatial information. This article tries to explain the background ideas that form the basic concept of the scientific SDI related to the concepts of e-Science and e-Research. Finally, it explains how these ideas are taken into practice into the new University Scientific SDI

    WEB MAPPING ARCHITECTURES BASED ON OPEN SPECIFICATIONS AND FREE AND OPEN SOURCE SOFTWARE IN THE WATER DOMAIN

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    The availability of water-related data and information across different geographical and jurisdictional scales is of critical importance for the conservation and management of water resources in the 21st century. Today information assets are often found fragmented across multiple agencies that use incompatible data formats and procedures for data collection, storage, maintenance, analysis, and distribution. The growing adoption of Web mapping systems in the water domain is reducing the gap between data availability and its practical use and accessibility. Nevertheless, more attention must be given to the design and development of these systems to achieve high levels of interoperability and usability while fulfilling different end user informational needs. This paper first presents a brief overview of technologies used in the water domain, and then presents three examples of Web mapping architectures based on free and open source software (FOSS) and the use of open specifications (OS) that address different users' needs for data sharing, visualization, manipulation, scenario simulations, and map production. The purpose of the paper is to illustrate how the latest developments in OS for geospatial and water-related data collection, storage, and sharing, combined with the use of mature FOSS projects facilitate the creation of sophisticated interoperable Web-based information systems in the water domain

    Prototype of GIS Based Location Information Enquiry System

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    The convergence of the internet and wireless communication has led the popularity of using handheld devices. People have now started demanding services that can be delivered any time anywhere, called Location Based Services (LBS). This paper deal with development of location based services on handheld devices that apply to emergency services. Handheld devices suffer from serious constrains in three areas: memory size, processor speed and screen size. This application uses the client server concept within wireless internet environment. The positioning service such as GPS is used to know the position of the user. The objective of this research is to display special query on the required spatial information within handheld devices using different operating systems such as WinCE, Palm OS and Symbian. This implies the strong feature of the proposed system. Hence the system assists people e.g. at the time of emergency to find the shortest path to the nearest hospital. The application will be access through the wireless internet. Only the related location in the entire map will be displayed on the handheld devices to which gives the economical usage of bandwidth and resources for real time response. This technology uses mobile internet as web browser embedded in the handheld devices. In Malaysia, a Location Based Services is still new and can be expand in many ways, especially in emergency cases

    Constructing Geo-Information Sharing GRID Architecture

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    Environmental Decision-making utilizing a Web GIS to Monitor Hazardous Industrial Emissions in the Valencian community of Spain

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    Dissertation submitted in partial fulfillment of the requirements for the Degree of Master of Science in Geospatial Technologies.Air pollution is a critical issue in contemporary times. For this reason, officials and environmental managers are in need of suitable tools for visualization, manipulation and analysis of environmental data. Environmental concerns in Europe have encouraged the European Environmental Agency (EEA) to create the European Pollutant Release and Transfer Register (E-PRTR). The E-PRTR is vital and valuable because society will benefit if the data are used to improve monitoring and consequently advance environmental management. However, the data are not accessible in an interoperable way, which complicates their use and does not allow for a contribution to environmental monitoring. This paper describes a Web GIS system developed for the monitoring of industrial emissions using environmental data released by the EEA. Four research objectives are addressed: (1) design and create an interoperable spatial database to store environmental data, (2) develop a Web GIS to manipulate the spatial database, facilitate air pollution monitoring and enhance risk assessment, (3) implement OGC standards to provide data interoperability and integration into a Web GIS, (4) create a model to simulate distribution of air pollutants and assess a population’s exposure to industrial emissions. The proposed approach towards interoperability is an adoption of servicebased architecture for implementation of a three-tier Web GIS application. This system’s prototype is developed using open source tools for the Valencian Community of Spain
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