نتایج جستجو برای: road density

تعداد نتایج: 478599  

The quality of the road pavement has always been one of the major concerns for governments around the world. Cracks in the asphalt are one of the most common road tensions that generally threaten the safety of roads and highways. In recent years, automated inspection methods such as image and video processing have been considered due to the high cost and error of manual metho...

قدمی, مصطفی, احمدی باصری, الهام, یزدانی چراتی, جمشید,

Background and purpose: Road accidents are a major cause of mortality throughout the world especially in undeveloped and developing countries. Mazandaran Province in Iran has one of the busiest roads with a high rate of accidents and fatalities. Environmental and social conditions influence this problem. This study aimed at exploring the social and geographical pattern of mortality due to road ...

Journal: :Wireless Personal Communications 2014
Sardar Muhammad Bilal Atta ur Rehman Khan Samee Ullah Khan Sajjad Ahmad Madani Babar Nazir Mazliza Othman

Over the last few years, vehicular ad hoc networks (VANETs) have gained popularity for their interesting applications. To make efficient routing decisions, VANET routing protocols require road traffic density information for which they use density estimation schemes. This paper presents a distributed mechanism for road vehicular density estimation that considers multiple road factors, such as r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

introruction khawf in(iran)-herat and mazaresharif and shirkhan bandar in (afghanistan)-dushanbe in (tajikistan)_(kirgizstan)-kashghar in(china) project railway network is under construction that it is as a significant corridor for revitalizing silk road corridor in the region .at the present there are three different gauge in the region central asia with 1,520 mm gauge and turkey-islamic repu...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

2013
V. S. Landge

Poisson regression and negative binomial regression have been widely used to model the road crashes and to predict crash frequency. Zero inflated models have been shown to be a powerful tool to predict crash frequency when crash data are characterized by preponderance of zero. This paper presents the research work aiming to correlate the road traffic crash rate with road geometry and traffic ch...

Journal: :ISPRS Int. J. Geo-Information 2015
Luliang Tang Xue Yang Zihan Kan Qingquan Li

In this paper, we propose a novel approach for mining lane-level road network information from low-precision vehicle GPS trajectories (MLIT), which includes the number and turn rules of traffic lanes based on naïve Bayesian classification. First, the proposed method (MLIT) uses an adaptive density optimization method to remove outliers from the raw GPS trajectories based on their space-time dis...

Journal: :Environmental management 2015
John A Litvaitis Gregory C Reed Rory P Carroll Marian K Litvaitis Jeffrey Tash Tyler Mahard Derek J A Broman Catherine Callahan Mark Ellingwood

We are using bobcats (Lynx rufus) as a model organism to examine how roads affect the abundance, distribution, and genetic structure of a wide-ranging carnivore. First, we compared the distribution of bobcat-vehicle collisions to road density and then estimated collision probabilities for specific landscapes using a moving window with road-specific traffic volume. Next, we obtained incidental o...

Journal: :Journal of environmental biology 2007
Murat Demir E Makineci E Yilmaz

In this study the impact of production work on the skid roads that have been carried out for many years by manpower animal power or machinery in a beech (Fagus orientalis Lipsky) stand have been examined. For this purpose, herbaceous understory, forest floor and soil samples were collected from the undisturbed area and the skid road. Weight per unit area (kg ha(-1)), organic matter ratio and mo...

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