The purpose of the present study was to estimate emissions of some pollutants (CO, NO(X), HC, SO(X), and PM) in diesel fleet due to the addition of biodiesel in different blends, as well as to assess atmospheric pollutant concentrations in the metropolitan area of Porto Alegre (MAPA). The methodology was based on inventories from mobile sources based on US EPA's technical report. Regarding air ...

Spotlight summary: Light sources have an indispensable role in everyday life. From the first lamp using animal fat around 70,000 BC, to modern light sources, these have been widely used and developed for diverse applications going much beyond night lighting. For example, light-emitting diodes (LEDs) have been extensively utilized in illumination, e.g. as backlight for various mobile units (such...

To construct realistic 3D models of large environments that match the physical world as accurately as possible there is the need to combine several kinds of data sources, such as: ground and aerial laser range scans, tracking data, photos, GPS data, satellite images. In this paper we concentrate on the ground level data acquisition. We present two integrated solutions for automated 3D acquisiti...

In the past decade, large scale mobile phone data have become available for the study of human movement patterns. These data hold an immense promise for understanding human behavior on a vast scale, and with a precision and accuracy never before possible with censuses, surveys or other existing data collection techniques. There is already a significant body of literature that has made key inroa...

Spatial big data have the velocity, volume, and variety of big data sources and contain additional geographic information. Digital data sources, such as medical claims, mobile phone call data records, and geographically tagged tweets, have entered infectious diseases epidemiology as novel sources of data to complement traditional infectious disease surveillance. In this work, we provide example...

The Listen Communicate Show (LCS) Marine system enables Marines to issue and monitor verbal logistics domain requests using a computer and a microphone headset or cellular phone. The LCS Marine server accepts the verbal supply request and, if necessary, automatically enters into a dialogue with the user to elicit sufficient information to place a valid logistics domain request. Once a valid req...

Mobile Agents are a newly emerging network application technology in which programs can travel throughout a network to run on machines other than the originating host. Extensive research on Mobile Agents has been ongoing for many years and many Mobile Agent systems have been developed. However, there has not yet been any widespread acceptance of Mobile Agents as a viable technology by the Inter...

The mobile telecommunication market has recently been shaken by the arrival of new actors, such as Apple and Google. As a consequence, the relatively well-established mobile network operators (MNO) have to rethink their position in the market if they want to participate in the growth of mobile telecommunication revenues. Mobile applications and services are being seen as great opportunity of ne...

Massive and passive data such as cell phone traces provide samples of the whereabouts and movements of individuals. These are a potential source of information for models of daily activities in a city. The main challenge is that phone traces have low spatial precision and are sparsely sampled in time, which requires a precise set of techniques for mining hidden valuable information they contain...

Proliferation of mobile applications in unpredictable and changing environments requires applications to sense and act on changing operational contexts. In such environments, understanding the context of an entity is essential for adaptability of the application behavior to changing situations. In our view, context is a high-level representation of a user or entity’s state and can capture activ...