Interactive network-based navigation over large urban environments raises difficult problems due to the size and complexity of these scenes. In this paper, we present a stream proposed for MPEG-4 standardization allowing navigation over 3D cities in real time. Thanks to a novel progressive and hierarchical representation called PBTree, only perceptible details for all the regions visible from a...

The traveling salesperson problem (TSP) is difficult to solve for input instances with large number of cities. Instead of finding the solution of an input with a large number of cities, the problem is approximated into a simpler form containing smaller number of cities, which is then solved optimally. Graph pyramid solution strategies, in a bottom-up manner using Bor̊uvka’s minimum spanning tree...

The traveling salesman problem (TSP) is difficult to solve for input instances with large number of cities. Instead of finding the solution for an input with a large number of cities, the problem is transformed into a simpler form containing smaller number of cities, which is then solved optimally. Graph pyramid solution strategies, using Bor̊uvka’s minimum spanning tree step, convert, in a bott...

Climate change will worsen the high levels of urban vulnerability in Latin American cities due to specific environmental stressors. Some impacts of climate change, such as high temperatures in urban environments, have not yet been addressed through adaptation strategies, which are based on poorly supported data. These impacts remain outside the scope of urban planning. New spatially explicit ap...

We quantified the spatio-temporal patterns of land cover/land use (LCLU) change to document and evaluate the daytime surface urban heat island (SUHI) for five hot subtropical desert cities (Beer Sheva, Israel; Hotan, China; Jodhpur, India; Kharga, Egypt; and Las Vegas, NV, USA). Sequential Landsat images were acquired and classified into the USGS 24-category Land Use Categories using object-bas...

Adaptive reuse can help increase operating efficiency, and "green adaptive reuse" is the best option for historical buildings. There are no specific important environmental elements in Malaysia Green Building Index (GBI) that catered for, particularly of buildings Malaysian setting. a vital need to identify certain essential aspects be used develop green features Malaysia's projects. This study...

Urban ecosystems are an increasingly dominant feature of terrestrial landscapes. While evidence that species can adapt to urban environments is accumulating, the mechanisms through which urbanization imposes natural selection on populations are poorly understood. The identification of adaptive phenotypic changes (i.e. clines) along urbanization gradients would facilitate our understanding of th...

BACKGROUND The project "Assessment and prevention of acute health effects of weather conditions in Europe" (PHEWE) had the aim of assessing the association between weather conditions and acute health effects, during both warm and cold seasons in 16 European cities with widely differing climatic conditions and to provide information for public health policies. METHODS The PHEWE project was a t...

When visiting cities as tourists, most users intend to explore the area looking for interesting things to see or for information about places, events, and so on. An adaptive information system, in order to help the user choice, should provide contextual information presentation, information clustering and comparison presentation of objects of potential interest in the area where the user is loc...