While mobile ad-hoc networking (MANET) research has received a considerable attention in recent years, the majority of them have focused on single-tier (e.g., ground) and homogeneous (e.g., same radio for every node) MANET. Few have investigated the potential implications of multi-tier and heterogeneous natures of MANET on the design and performance of MANET protocols in a systematic manner. Fo...

The quantity of "horse-race" coverage of political campaigns has been amply documented, but its consequences for the dynamics of campaigns are less well understood. This study examines the effects of media portrayals of public support for candidates on the behavior of potential campaign contributors. This relationship is tested in the context of the four leading Democratic presidential primary ...

Based on unmixing model and using the Thematic Mapper (TM) image as well as obtaining end-members by ground spectral measurements, quantitative retrieval of information on sparse vegetation coverage in oasis-desert transitional area in Minqin, Gansu was done. The results showed that a wide band of TM images can be used in extracting sparse vegetation coverage of arid regions. Three components w...

Regional air quality model predictions attributable to aircraft for total column aerosol optical depth (AOD) and vertically resolved aerosol extinctions/NO2 concentrations are compared against MODIS AOD, CALIPSO aerosol extinctions, and SAGE aerosol extinctions/NO2 concentrations. The goal of this work is to determine if an aircraft-specific signal is present in these metrics and how it compare...

Path planning of unmanned aerial vehicles (UAVs) for reconnaissance and look-ahead coverage support mobile ground (MGVs) is a challenging task due to many unknowns being imposed by the MGVs’ variable velocity profiles, change in heading, structural differences between air environments. Few path techniques have been reported literature multirotor UAVs that autonomously follow MGVs missions. Thes...

Low Earth Orbit (LEO) satellites are used for public networking and for scientific purposes. Communication via satellite begins when the satellite is positioned in its orbital position. Ground stations can communicate with LEO satellites only when the satellite is in their visibility region. The duration of the visibility and the communication vary for each LEO satellite pass over the station, ...