نتایج جستجو برای: skidders traffic
تعداد نتایج: 98535 فیلتر نتایج به سال:
conclusions it is proposed that the needed research be conducted at national and regional levels in coordination and cooperation with international organizations active in the field of traffic crashes in various parts of the world, especially in asian, african and latin american developing countries, where a greater proportion of pedestrian traffic crashes occur. results a review of the studies...
Tillage is one of the important managing factors that can destroy or improve soil structure. Soil structure is affected by the machines and shape of the wheels. Field experiments were conducted at Hamadan Agricultural Research Station on a coarse loamy mixed mesic Calcixerolic Xerocrepts soil to measure and evaluate the effects of tillage and wheel-induced compaction on selected soil physical...
sleep deprivation (sd) increases the risk of human-error related accidents and a major cause of motor vehicle accidents. the overall prevalence of insufficient sleep in adults has been estimated at 20%. according to a comprehensive study prevalence of daytime sleepiness, among young adults (age 21 to 30 years), the average nocturnal sleep time during weekdays was 6.7 hours and on weekends was 7...
injuries suffered in vehicle traffic crashes are the leading cause of death among children in many countries. prevention of injuries of children in raod accidents is still a challenge. the present lecture discuss the commonly injuried body regions in children involved in motor and non-motor vehicle traffic crashes. head, ribs and lung are commonly injured body regions among children under 8 yea...
human factors issues associated with roadway design and operations are critical components of improving highway safety. first, the three major components of highway safety are driver behavior, vehicle safety, and roadway safety. the general philosophy in roadside safety follows the priorities of (1) remove the hazard, (2) relocate the hazard, (3) make the hazard forgiving, and (4) shield the ha...
large urban areas are facing growing problems of noise pollutions. geospatial information systems (gis) can conveniently be adapted to gather, analyze and present noise information. gis can also be extended to answer to user specific problems through deterministic and statistics models. the objectives of this research were to measure urban traffic noise levels, analyze temporal and spatial dyna...
Background: To reduce traffic injuries in the country, health professionals should have accurate estimates of road traffic deaths. Multiple and sometimes inconsistent statistics presented by organizations in charge create high degree of uncertainty for planners and decision makers. To achieve an accurate estimate, several methods are available. Of them, capture-recapture method ...
background: to reduce traffic injuries in the country, health professionals should have accurate estimates of road traffic deaths. multiple and sometimes inconsistent statistics presented by organizations in charge create high degree of uncertainty for planners and decision makers. to achieve an accurate estimate, several methods are available. of them, capture-recapture method seems to be an a...
Road traffic casualties ( RTC) present a major health problem in Iran with a significant number of death and injuries among drivers, passengers and pedestrians of all ages. The purpose of this study was to achieve an understanding and knowledge about the pattern of the accident,s casualties in the city of Kerman. During one year period ( 1994-1995) all in- patient and out- patient cases referre...
Abstract Background: There is no reliable prediction model on the rate of mortality due to road traffic accidents in Iran. The present study aimed to predict deaths from road traffic crashes in Iran. Materials and methods: All death records from traffic accidents in Iran between March 2004 and March 2011 were analyzed. The Box-Jenkins time series model was used for obtaining trends. Death f...
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