Geographic routing has received an increasing attention in the context of Wireless Sensor Networks since it frees the network from the energy-demanding task of building and maintaining a structure. It requires however each node to know its position, which may be a prohibitive assumption for many applications. To this end, some prior work has focused on inferring a node’s location from a set of ...

Micro-organism populations on the leaf surface can be an indicator of environmental health in orchards. A method was developed to detect changes in these populations in apple orchards. Firstly, the variation within orchards was investigated by sampling leaves from seven locations within four trees in spring and autumn. The population density and species richness of micro-organisms when grown on...

The development of routing protocols for mobile ad hoc networks is a challenging and active research area, and a variety of approaches have been developed. Among them, geographic routing strategies use knowledge of the devices’ physical positions to achieve efficient routing performance – a critical goal for networks of resource-constrained devices. Strategies have also been developed to perfor...

Rapid climate change, in conjunction with other anthropogenic drivers, has the potential to cause mass species extinction. To minimize this risk, conservation reserves need to be coordinated at multiple spatial scales because the climate envelopes of many species may shift rapidly across large geographic areas. In addition, novel species assemblages and ecological reorganization make future con...

The Geography Markup Language (GML) is a standard XMLbased language that enables the representation and easy interchange of geographic data between Geographic Information Systems (GIS). In this paper, we explored the compressibility of GML performing some empirical experiments over real GML corpus using a wide set of wellknown compressors. In particular, the main characteristics of GML are firs...

Newspapers, travel narratives, blogs, books and the Internet hold a huge amount of geographic information that can be extracted in order to provide visual exploration. Also, the understanding of place references involves knowledge of the document context. In this way, the study of tools for disambiguation is needed. For the automatic annotation of time and location, both shared world knowledge ...