Modelling and simulation applications for operations in urban areas often set high resolution and fidelity requirements for the 3D environment models. For applications supporting ongoing operations, e.g decision support, mission planning, etc., additional requirements such as time frame and accessibility to the area of interest must also be taken into account in the modelling task. One possible...

Digital orthoimage is a widely used cartographic product, either as a complement to the traditional topographic map-when the latter has not been updated-or to allow the extraction of different kinds of information. The geometric precision of an orthoimage is strongly dependent on the quality of the Digital Elevation Model (DEM) and the geometric correction algorithm used. It is well known that ...

The rapid growth of population in urban areas is jeopardizing the mobility and air quality worldwide. One of the most notable problems arising is that of traffic congestion which in turn affects air pollution. With the advent of technologies able to sense real-time data about cities, and its public distribution for analysis, we are in place to forecast scenarios valuable to ameliorate and contr...

Little is known regarding levels and source strength of carbonaceous aerosols in Scandinavia. In the present study, ambient aerosol (PM10 and PM2.5) concentrations of elemental carbon (EC), organic carbon (OC), waterinsoluble organic carbon (WINSOC), and water-soluble organic carbon (WSOC) are reported for a curbside site, an urban background site, and a suburban site in Norway in order to inve...

technological advancement has led to a clearer understanding of future risks and impacts. With increasing urbanization, understanding the impacts of climate change upon the urban environment will become ever more important. Evidence is mounting that climate change presents unique challenges for urban areas and their growing populations. Where urban areas grow rapidly without regard to current a...

In this paper, we combine the most complete record of daily mobility, based on large-scale mobile phone data, with detailed Geographic Information System (GIS) data, uncovering previously hidden patterns in urban road usage. We find that the major usage of each road segment can be traced to its own--surprisingly few--driver sources. Based on this finding we propose a network of road usage by de...

C-band SAR interferometry has been widely used for several Earth related studies (topography, volcanology, forestry etc.). Nevertheless, not much attention has been paid to urban areas and coherence has been used for classification purposes only. In this study we focused on the meaning of coherence of an urban area and performed several analysis in order to understand what causes decorrelation....

Region-based analysis is fundamental and crucial in many geospatialrelated applications and research themes, such as trajectory analysis, human mobility study and urban planning. In this paper, we report on an image-processing-based approach to segment urban areas into regions by road networks. Here, each segmented region is bounded by the high-level road segments, covering some neighborhoods a...

sson B. Cloning of a human parvovirus by molecular screening of respiratory tract samples.tinct patterns of evolution between respiratory syncytial virus subgroups A and B from New Zealand isolates collected over thirty-seven years. 1-year experience with human metapneu-movirus in children aged <5 years. subtyping of infl uenza viruses and respiratory syncytial viruses by multiplex RT– PCR. Det...