نتایج جستجو برای: inverse distance weighted idw

تعداد نتایج: 418173  

2016
Haijiang Wang Shaotin Ren Zhexia Hao Li Meng Wei Wei H. J. Wang

Diagnosis of soil salinity and characterizing its spatial variability both vertically and horizontally are needed to establish control measures in irrigated agriculture. In this regard, it is essential that salinity development in varying soil depths be known temporally and spatially. Apparent soil electrical conductivity, measured by electromagnetic induction instruments, has been widely used ...

Journal: :Environmental health perspectives 2018
Kristina Walker Whitworth Amanda Kaye Marshall Elaine Symanski

BACKGROUND Studies of unconventional gas development (UGD) and preterm birth (PTB) have not presented risk estimates by well development phase or trimester. OBJECTIVE We examined phase and trimester-specific associations between UGD activity and PTB. METHODS We conducted a case-control study of women with singleton births in the Barnett Shale area, Texas, from 30 November 2010 to 29 Novembe...

Journal: :ISPRS Int. J. Geo-Information 2016
Rahil Sharma Zewei Xu Ramanathan Sugumaran Suely Oliveira

Airborne Light Detection and Ranging (LiDAR) topographic data provide highly accurate digital terrain information, which is used widely in applications like creating flood insurance rate maps, forest and tree studies, coastal change mapping, soil and landscape classification, 3D urban modeling, river bank management, agricultural crop studies, etc. In this paper, we focus mainly on the use of L...

Journal: :ISPRS Int. J. Geo-Information 2017
Zhichen Yu Shaobo Zhong Chaolin Wang Yongsheng Yang Guannan Yao Quanyi Huang

With the continuous progress of human production and life, air quality has become the focus of attention. In this paper, Beijing, Tianjin, Hebei, Shanxi, Shandong and Henan provinces were taken as the study area, where there are 58 air quality monitoring stations from which daily and monthly data are obtained. Firstly, the temporal characteristics of the air quality index (AQI) are explored. Th...

Journal: :مجله انسان، محیط زیست و ارتقاء سلامت 0
nahideh mohammadi environmental science department, science faculty, university of zanjan, iran koorosh kamali department of public health, school of public health, zanjan university of medical sciences, zanjan, iran yousefali abedini physics department, science faculty, university of zanjan, zanjan, iran mohsen ahadnejad department of urban planning, university of zanjan, zanjan, iran mehdi azari department of urban planning, university of zanjan, zanjan, iran

background; brucellosis (malta fever) is a major contagious zoonotic disease, with economic and public health importance. methods; to assess the effect of meteorological (temperature, rainfall, humidity, and wind) and climate parameters on incidence of brucellosis, brucellosis distribution and meteorological zoning maps of zanjan province were prepared using inverse distance weighting (idw) and...

2012
Alan Mair Ali Fares

A total of 21 gauges across the mountainous leeward portion of the island of Oʻahu, Hawaiʻi, were used to compare rainfall interpolation methods and assess rainfall spatial variability over a 34-month monitoring period from 2005 to 2008. Traditional and geostatistical interpolation methods, including Thiessen polygon, inverse distance weighting (IDW), linear regression, ordinary kriging (OK), a...

Journal: :E3S web of conferences 2023

Due to cost limitations, it is not practicable experimentally investigate the soil characteristics over entire city. Given this, study has focused on using a geographic information system, especially IDW technique, with linear regression models. The study's data collection was taken from different locations around Kirkuk province. technique used examine Standard Penetration Testing (SPT) and ch...

Journal: :Water Air and Soil Pollution 2022

Abstract This study aims to assess the urban air quality, and map NO 2 , SO PM 10 profiles using two widely spatial interpolation methods, ordinary kriging (OK) inverse distance weighting (IDW) by estimating their concentrations at distinct non-monitored locations. Assessment mapping of pollutants in this help with policy formulation decision-making. Kota, industrial educational hub Rajasthan (...

Journal: :Transboundary and Emerging Diseases 2023

In September 2018, classical swine fever (CSF) reemerged in Japan after more than a quarter of century. After the first notification on pig farm, wild boars positive for CSF were found continuously surrounding area. Gifu was prefecture to disseminate oral vaccines March 2019, with spread approximately 14,000 sites between 2019 and 2020. While these diligent measures seemed have shown some effec...

ژورنال: علوم آب و خاک 2019

In the present study, we used 27 precipitation average monthly data from synoptic, climatologic, rain-guage and evaporative stations located in Zayandeh-Rud river basin for the period of 1970-2014. Before interpolating, the missing data in the time series of each station was reconstructed by the normal ratio method. Also, for the data quality control, the Dickey-Fuller and Shapiro-Wilk tests we...

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