نتایج جستجو برای: traffic effects
تعداد نتایج: 1635368 فیلتر نتایج به سال:
While the impact of crowding on the diffusive transport of molecules within a cell is widely studied in biology, it has thus far been neglected in traffic systems where bulk behavior is the main concern. Here, we study the effects of crowding due to car density and driving fluctuations on the transport of vehicles. Using a microscopic model for traffic, we found that crowding can push car movem...
The purpose of this study is to assess the sensitivity of four highway bridges to wind and live loadings. The bridges are plarmed for construction on U.S. 59 in Houston, Texas. Each bridge will be of the tied-arch type and will be constructed on-grade over cut areas with clear spans in excess of 61 :reters (200 feet). To expedite construction, unique procedures are plarmed Which use existing br...
Background: Road accidents are among the most important causes of death and severe personal and financial injuries. Also, its profound social, cultural, and economic effects threaten human societies. This study aimed to estimate the trend of traffic accident victims in Yazd Province, Iran, to predict the number of traffic accident victims in this province. Materials and Methods: Based on traff...
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...
Cattle grazing has been a historic use of rangelands in Utah since pioneer settlement the mid-1800’s. Wright fishhook cactus is small globose endemic to an area 280,000 ha south–central and was listed as endangered October 1979, by U.S. Fish Wildlife Service (USFWS). By 2010, concerns were expressed that soil compaction proximity posed threat this species, though there no empirical data support...
Background and Objectives: Noise pollution in cities, as a widespread and worldwide problem, can cause adverse health effects such as hearing loss. Traffic noise, as the most important source of urban noise, can influence many jobsincluding shopkeepers. The aim of this study was simultaneous assessment of traffic noise pollution and hearing threshold level of shopkeepers in congested area of Be...
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