vehicle crashes are amongst the major causes of mortality and results in losses of lives and properties. alarge number of the vehicle crashes occur on rural roads. accidents become more noteworthy in two-laneroads due to going and coming traffic. therefore, prediction of crashes and their causes are considerablyimportant to reduce the number and severity of the accidents. the safety index is a ...

Konstantinos Kontogiannis, András Sóbester University of Southampton, Southampton, UK Nigel Taylor MBDA, Filton, UK Nomenclature ICFA = Internal Conical Flow A α = osculating plane angle to the vertical axis β = effective shockwave angle γ = angle between shockwave profile and upper surface profile curve θ = inclination of the leading edge with respect to the horizontal plane λ = effective swee...

Even though there exist lots of documents on Finite Element Strength Reduction Method, cohesion and internal friction angle in these materials are reduced through the same reduction factor, which fails to reflect either of their safe reserving quality or the quality to precisely match slope failure process and mechanism. As is known, the exterior angle circumcircle yield criterion DP1 of the ge...

This is prospective, non-randomized study to evaluate and compare the results. Morbility and surgical time for open reduction and internal fixation (ORIF) and intermaxilliary fixation(IMF) for mandible fracture. 50 consecutive patients of symphysis and parasymphysis mandible fracture were selected for study. 20 patients under went IMF and 30 had ORIF. selection of type of operation was left to ...

b = a length L c = the cohesion intercept M L T Ip = the plasticity index P = a force M L T u = the pore fluid pressure ML T θ = an angle Angle μ1 = shear strength reduction factor related to time effects μ2 = shear strength reduction factor related to fissuring σ = the normal stress on a plane M L T τ = the shearing stress on a plane M L T φ = the angle of internal friction Angle ψ = an angle ...

More than 60% of accidents in Iran occur within 30 kilometers of cities entrance roads. Therefore the number of accidents per kilometer in these regions, in contrast to the other parts of roads is very considerable. The city of Tehran, as the capital of Iran, is the cross point of major arterials of passenger and freight transportation. Thus the evaluation of road safety, entering and exiting t...

BACKGROUND The optimal treatment of type III pilon fractures remains controversial. Hence, we performed this study to investigate whether open reduction and internal fixation (ORIF) is superior to external fixations combined with limited internal fixations (EFLIF). MATERIAL AND METHODS From January 2012 to October 2013, a total of 78 patients were included. Twenty-six patients underwent EFLIF...

Haldex Traction can with their Active Yaw Control prevent unwanted handling when driving a vehicle, by applying an extra torque with their all wheel drive system. To be able to calculate when and how this torque should be applied, it is important to the state information of the vehicle. When driving on banked roads, vehicle dynamics and sensor measurements are changed compared to when driving o...