Image retrieval of landscape photographs requires accurate annotation using multi-faceted descriptions relating to the subject and content of the photograph. The subject of such photographs is dominantly the terrain and spatial objects visible from the photographer’s viewpoint. While some spatial objects in the background may be obscured by foreground vegetation, other visible spatial objects b...

In archaeological research, visibility analysis is usually based on binary viewshed maps. However, Digital Elevation Models inherently contain errors due to inaccuracies in the original topographic data and the data structure used. Therefore the binary classification will be subject to an unknown amount of error. It would be more appropriate to use a method for visibility calculation which allo...

Abstract: This study sought to identify the ichthyofauna composition of Muzambinho River, an upland tributary Paraná River. We also investigate whether waterfalls in region can serve as barriers dispersal fish species. For this purpose, collections were carried out at 34 points on River using different techniques. In all, 37 species recorded, some which endemic, and majority native. Among these...

Water users consider the safety of water according to its aesthetic properties, primarily taste and odour. Geosmin (GEO) 2-methylisoborneol (MIB) are most common odour compounds in freshwaters which cause an earthy musty water. Since human nose can detect these concentrations as low 10 ng/L, it is essential monitor drinking waters before consumer complaints produce a timely solution. Therefore,...