![]() This article describes the techniques, architecture and technologies used to achieve this. By utilising the power of web-based technologies in an innovative manner, any operational issues between different mobile devices is alleviated, as the device only requires a web-browser to receive map content. This profile is then used to render personalised maps. The framework is designed using open-source, web-based technologies which monitor user locations and interactions with map content overtime to produce a user profile. ![]() In this paper, in order to reduce the processing load on the user's device, a novel client server architecture is employed. Our previous work has focused on examining techniques to determine user interests in order to provide adapted and personalised map content which is suitable to display on portable devices. ![]() These devices have a reduced screen size coupled with a limited processing power and so the need to provide personalised content is of paramount importance. These services, which are dependent upon a user's geographic location, generally operate on portable devices. The problem is intensified when considering Location-Based Services. With such an abundance of geo-information, it is difficult for map users to find content that is relevant to them. This issue is also escalating in the spatial domain as the amount of geo-tagged information expands. We dis- cuss possible GML representations, propose an extension of GML that uses 3D segments (2D location + time) to represent moving objects, and present experiments that compare the solutions.Īs the volume of information available online continues to grow, there is an increasing problem with information overload. Second, we describe how moving objects can be represented in GML. ![]() First, we describe an implementation of a lightweight client that takes advantage of the functionality offered by Secondo and MapServer. The paper investigates in detail issues that arise in the context of the web. We describe the architecture of the system and compare our system with a standalone application. The system uses Sec- ondo as spatio-temporal DBMS for handling moving objects and MapServer as an OGC-compliant rendering engine for static spa- tial data. This paper describes the design and implementation of a web- based spatio-temporal information system. In strong contrast, there exist only very few proposals for an implementation of a spatio-temporal database system let alone a web-based spatio-temporal information system. Many database applications deal with spatio-temporal phenom- ena, and during the last decade a lot of research targeted location- based services, moving objects, traffic jam preventions, meteorol- ogy, etc. In this paper, we also describe in detail the WMS, WCS,and GML extensionsįrom the interoperability point of view, and discuss issues related to adoption of such standards. Open standards, such as, WMS, WCS, GML and WFS. We also evaluateĪlternative approaches and assess the pros and cons of our design and implementation. Spatial analysis system, UMN-MapServer, and evaluate its performance in a regional natural resource mapping and analysis (NRAMS)Īpplication which utilizes biweekly AVHRR imagery and several other raster and vector geo-spatial datasets. We take an opposing approach and present a load balancing client/server Web-based Which are heavy-duty, stand-alone systems. Recently the focus has been shifted towards client-side Web GISes, The server increases and system performance decreases. For example, as the number of users increases, the load on Web GISes are predominantly designed under a “thin-client Rapidly evolving and adapting to advances in Internet technologies. Makes the World Wide Web a popular vehicle for geo-spatial information distribution and online geo-processing. Recent advances in Internet technologies, coupled with wide adoption of the web services paradigm and interoperability standards,
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