Wireless communications in the low terahertz band (0.1 THz-1 THz) is a promising candidate to enable ultra-high-rate vehicular networks beyond 5G. The successful design and adoption of such systems require deep understanding THz channel specifics complex scenarios. In this paper, comprehensive measurement campaign reported with aim analyzing wave propagation at 300 GHz typical deployments. Foll...

Compressed natural gas (CNG) is a substitution of alternative fuel for automotive application with significant environmental advantages as it is the only fuel cheaper than gasoline or diesel, comparatively lower air pollution emissions, lesser CO2 emissions. However, emission of methane is 40% more in CNG fuelled engines compared to gasoline and diesel. With the exponential growth in CNG fuelle...

have edited this new book to reflect the present and future challenges in wireless technologies for vehicular ad hoc networks. New technologies are being developed for vehicular ad hoc networks, and these networks provide an efficient method for today's complex vehicle communications. Emerging vehicular ad hoc networks in the forms of Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I)...

objectives the aim of this study was to assess soils of khorramabad metropolis in order to establish the concentration of lead and develop a contamination factor map. materials and methods soil samples were collected from 25 different urban parks in khorramabad, iran. the mean pb contents in the urban topsoil samples were compared with mean concentrations for other cities around the world. a sp...

VANETs solutions use aggregated graph representation to model the interaction among vehicles and different complex network measures quantify some topological characteristics. This modeling ignores temporal interactions between cars, causing loss of information or unrealistic behavior. work proposes both graphs applications. To verify viability this model, we initially perform a comparative anal...

The concentrations of heavy metals in 21 samples collected from surface sediments from the Qinghai section of the Yellow were investigated in order to evaluate their distribution and pollution levels. The total concentrations showed wide variations with Cu 11.86~57.02 mg/kg, Fe 17236.67~41340.00 mg/kg, Mn 431.93~877.27 mg/kg, Ni 14.58~86.11 mg/kg, Zn 67.18~149.00 mg/kg, Cr 87.84~169.70 mg/kg, P...

Air Pollution is one of the significant problems in Tehran. Understanding the role of different sources can result in better decision-making. Some pollutions are not emitted directly from sources and are present in the atmosphere due to chemical reactions. Therefore, using air quality modeling can be beneficial to our understanding of these phenomena. An air quality modeling system was used fir...