In this paper, the optimal numbers of gas and hydrogen stations are examined. Recently, the possibility of gasoline vehicles being replaced with fuel cell vehicles (FCV) is being examined in the coming hydrogen society. The realization of this scenario however needs a large number of hydrogen refueling stations, which hardly exist at the present. We first calculate the optimal number of hydroge...

in this investigation, using mann – kendall graphical-statistical test, which is one of the proposed methods of world meteorological organization (wmo) for time series analysis, the change trend of long – term mean of annual minimum and maximum temperatures in iran will be studied. to evaluate this trend and access a suitable pattern in this situation, average of annual minimum and maximum ...

Recently, public bicycle sharing system (PBSS) has become one of the most favorite urban transportation systems that can help governments to decrease environmental problems such as pollution and traffic. This paper studies a sharing system that includes two types of stations. The first category contains stations that users can rent or return back bicycles and each bicycle can be rented by any n...

filling stations inside the urban environment are known as one of the existing and potential dangers in cities which according to their centralized fire load can be of high safety importance. tehran holds 101 active filling stations faced to extreme accidents and high explosion potentials. in this study, 59 out of 101 gas stations were investigated under the fire risk assessment implementation....

Landslides along the main roads in mountains cause fatalities, ecosystem damage, and land degradation. This study mapped susceptibility to landslides Saqqez-Marivan road located Kurdistan province, Iran, comparing an ensemble fuzzy logic with analytic network process (fuzzy logic-ANP; FLANP) TOPSIS logic-TOPSIS; FLTOPSIS) terms of their prediction capacity. First, 100 identified through field s...