نتایج جستجو برای: distance of road

تعداد نتایج: 21187947  

Parthenium hysterophorus, an invasive alien weed, is spreading rapidly across various land uses in Nepal. To understand how Parthenium is spreading across land uses at local scale, occurrence of this weed was recorded and its’ coverage in percent estimated along trails and road network at every 100 meter distance in Kirtipur Municipality of Kathmandu valley. In addition, vegetation sampling was...

EXTENDED ABSTRACT      Recognition of effective factors on landslide occurrence in the area leads to an important set of solutions to control and take suitable actions upon this phenomenon. This paper aims at recognizing such factors and also landslide occurrence and zoning landslide hazard, using density area, Analytical Hierarchy Process and logistic regression, and also investigating the ac...

Journal: :BMC Psychiatry 2006
Carsten Bøcker Pedersen Preben Bo Mortensen

BACKGROUND Urban birth or upbringing increase schizophrenia risk. Though unknown, the causes of these urban-rural differences have been hypothesized to include, e.g., infections, diet, toxic exposures, social class, or an artefact due to selective migration. METHODS We investigated the hypothesis that traffic related exposures affect schizophrenia risk and that this potential effect is respon...

Background; Contamination of water and soil through non-point sources such as road runoff causes environmental concern. The aim of this study is to determine the effect of Zanjan – Chavarzagh road on the total organic carbon (TOC) content of sediments in tributaries and the river that lead to Taham Lake. Methods; In tributaries and the river 69 soil and sediment samples were taken and the Tota...

2015
Sangho Kim Jeffrey M. R. Wolff Qingsong Lu Shashi Shekhar

The popularity of location-based services and the need to perform real-time processing on them has led to an interest in queries on road networks, such as finding shortest paths and finding nearest neighbors. The challenge here is that the efficient execution of operations usually involves the computation of distance along a spatial network instead of “as the crow flies,” which is not simple. T...

Journal: :PVLDB 2012
Siqiang Luo Yifeng Luo Shuigeng Zhou Gao Cong Jihong Guan

Query (e.g., shortest path) on road networks has been extensively studied. Although most of the existing query processing approaches are designed for centralized environments, there is a growing need to handle queries on road networks in distributed environments due to the increasing query workload and the challenge of querying large networks. In this demonstration, we showcase a distributed sy...

Journal: :مرتع و آبخیزداری 0
حاجی کریمی دانشیار دانشکدة کشاورزی دانشگاه ایلام فتح الله نادری کارشناس ارشد ژئومورفولوژی و مدرس دانشگاه پیام نور ایلام بهروز ناصری عضو هیئت علمی دانشگاه آزاد اسلامی، واحد ایلام علی سلاجقه استاد دانشکدة کشاورزی و منابع طبیعی دانشگاه تهران

distinguishing the susceptible areas to landslide using different landslide susceptibility mapping (lsm) models is one of the primitive and basic works to reduce probable damages and reduce risk. the main purpose of this research is the efficiency evaluation of four methods including information value (winf), valuing area accumulation (wa), analytical hierarchy process (ahp), kopta-joshi propos...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید