نتایج جستجو برای: road density

تعداد نتایج: 478599  

2016
Enayatollah Homaie Rad Ali Kazemi Karyani Hamed Zandian

Background: Fatal road accidents are among the most important causes of mortality in the world; Iran has one of the world’s highest accident fatality rates. Therefore, it is important to have efficient pre-hospital emergency services. Objectives: The main aim of this study was to assess the road emergency sites (RECs) in Iran. Materials and Methods: Provincial data were used for this purpose. C...

2004
Sergiu Nedevschi Radu Danescu Dan Frentiu Tiberiu Marita Florin Oniga Ciprian Pocol Thorsten Graf Rolf Schmidt

This paper will present an obstacle detection system that that relies on the 3D information provided by stereo reconstruction. The 3D features must be separated in road features and obstacle features. Instead of relying on the flatness of the road, the vertical road profile is modeled as a clothoid, and is estimated from the lateral projection of the 3D points. The points above the road are sel...

2007
TOM A. LANGEN

Road mortality can contribute to local and regional declines in amphibian and reptile populations. Thus, there is a need to accurately and efficiently identify hotspots of road-mortality for hazard assessment and mitigation. In 2002, we conducted walking and driving surveys throughout an extensive rural highway network in northern New York, USA, to evaluate survey methods and to quantify spatia...

Journal: :Frontiers in Environmental Science 2022

Mounting degradation in the environmental quality (EQL), specifically from transport industry, is a big threat and challenge for sustainable development. The sector’s emission has gained researchers’ attention on climate change transportation because of its increasing share global emission. This study, thus, aims to analyze links among road infrastructure (RIN), energy consumption (RTEC), with ...

Journal: :IEEE Access 2022

Vehicular ad hoc networks (VANETs) are emerging to serve various types of applications for serving smart cities and intelligent transportation systems. There several challenging factors ensuring reliable stable VANETs communications. clustering is essential functionality routing protocols in enable VANETs. Clustering algorithms operate decentralized mode, which requires incorporating additional...

An up-to-date review of rural road accident statistics for Iran is presented The review considers sources of accident statistics in Iran and the means by which they are collected. The statistics are considered in relation to accident causal and risk factors. A comparison is made with statistics available for other countries at a similar stage of development and countries with highly developed e...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...

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