The atmospheric particulate matter of industrialised cities have become a mixture of potentially basic substances whose concentration have to be monitored to assess the pollution levels. Anthropogenic elements, particularly trace metal, are part of these pollutants and the knowledge of their total concentration in the air is necessary to evaluate the pollution risk in term of maximum levels and...

Statistical regression models are presented, that explain the observed variations, across urban areas, in the concentrations of two major pollutants, ozone and carbon monoxide. Model specification and estimation are based on an explicit and new spatial framework derived from the theoretical concept of well-mixed cells, whereby the basic Fickian system of diffusion equations is integrated over t...

Today’s, a common problem in cities is increasing delay and reducing the speed of traffic. On the other wise increasing costs of acquisition in urban area are not allow new routes and highways. Also construction of new highway or street such as Imam Ali highway and Sadr highway in Tehran lead to develop new applications (such as BRT lane ,…) And become quickly saturate and less eff...

Sufficient data refer to the relevant prevalence of sound exposure by mixed traffic sources in many nations. Furthermore, consideration of the potential effects of combined sound exposure is required in legal procedures such as environmental health impact assessments. Nevertheless, current practice still uses single exposure response functions. It is silently assumed that those standard exposur...

We present results from vehicle to vehicle RF propagation measurements centered at Se0 M H z We focus on determining dehy s p r e a probability distribution parameters (in particular; the Rician K factor) and p t h loss rates. Our results are discussed with implications for the use of RF communication between automobiles in Intelligent Vehicle Highway System (IVHS). Our paper consists of a desc...

Objective: Zayandehrood habitat has economical and environmental importance in central plateau of Iran    and it performs a vital role for habitants, agriculture section and the industries which are located along river bed. So current research  has been done to measure the contamination of heavy metals, its changes along the river route and defining the important and effective regions on this c...

Objective: Zayandehrood habitat has economical and environmental importance in central plateau of Iran    and it performs a vital role for habitants, agriculture section and the industries which are located along river bed. So current research  has been done to measure the contamination of heavy metals, its changes along the river route and defining the important and effective regions on this c...

Systematic, well-designed research provides the most effective approach to the solution of many problems facing highway administrators and engineers. Often, highway problems are of local interest and can best be studied by highway departments individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation develops increasingly ...