نتایج جستجو برای: urban roadside

تعداد نتایج: 173429  

2013
Bo Xie Geming Xia Yingwen Chen Ming Xu

Information dissemination is an important application in VANETs for traffic safety and efficiency. In urban area, roadside infrastructure nodes can be deployed for information dissemination. However, it is inefficient and uneconomical to cover the whole urban area. How to find the optimal locations to place DPs is a research problem. Some works on this issue have to collect accurate trajectorie...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :Periodicals of Engineering and Natural Sciences (PEN) 2018

Journal: Desert 2017
H.R. Karimzadeh J. Pourrezaei M. Tarkesh Esfahani M.R. Vahabi S.J. Khajeddin V. Mozaffarian

     Roads have an important role in plants dispersal on different scales. Various plant species settle on roadsides, but some of them can enter the natural environments and threaten their biodiversity. Worldwide knowledge of roadside flora is necessary for local and global management of natural areas. Accordingly, the roadside flora of Northern Khorasan rangelands was studied along the 600 km ...

Journal: :Earth systems and environment 2021

Abstract Urban greenspace has many health benefits, including cleaner air than the surrounding streets. In this study, a detailed exercise been conducted to measure concentrations of NO/NO 2 /NO x and O 3 within an urban greenspace, University Birmingham campus, using continuous analysers, as well transects NO measured with diffusion tubes. Concentrations have simulated ADMS-Roads model which o...

Journal: :Traffic injury prevention 2009
C Debra Furr-Holden Robert B Voas John Lacey Tara Kelley-Baker Eduardo Romano Mieka Smart

OBJECTIVE To determine whether drivers contacted at the roadside can be screened for alcohol use disorders (AUDs). Secondarily, to produce preliminary estimates of AUDs among drivers and estimate the relationship between AUD status and BAC measured at the roadside. METHODS A two-phase survey program was undertaken. In phase 1, 206 motorists were interviewed at the roadside using a 15-item AUD...

Journal: :محیط زیست طبیعی 0
احمد خداداد گروه مرتعداری دانشگاه علوم کشاورزی و منابع طبیعی گرگان عادل سپهری گروه مرتعداری دانشگاه علوم کشاورزی و منابع طبیعی گرگان

one of the factors and tools necessary in managing roadside is rules and regulations without which, the area will face serious challenges in terms of the environment. recognizing rules of roadside was investigated in the current research, since some perturbations and irregularities related to the ecosystem of roadside are the results of rules and regulations and also complex damages appeared in...

Journal: :Nihon eiseigaku zasshi. Japanese journal of hygiene 1996
T Sato T Niioka M Kurasaki Y Kojima

Increased use of motor vehicles has produced various risks to human health due to air pollution by noxious gases, heavy metals and roadside dust. Since the late 1970s, the wide spread use of studded tires for cars has caused pavement wear, resulting in not only economic losses, but also roadside air pollution in cold and snowy regions in Japan. The most serious environmental problem in Sapporo,...

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