نتایج جستجو برای: kendall test the multivariate mann

تعداد نتایج: 16131007  

Journal: :Journal of Geoscience and Environment Protection 2023

Rainfall and temperature variability analysis is important for researchers policy formulators in making critical decisions on water availability use communities. The Western Sahel, which comprises Mali considered as one of the vulnerable regions to climate change, also encountered challenges climatic shocks such flood drought. This research therefore sought investigate change effects hydrologic...

ژورنال: علوم آب و خاک 2014
خنامانی, علی, دودانگه, اسماعیل , سلطانی, سعید, سلیمانی , فرشاد, کریمزاده, حمیدرضا,

Underground water resources considered as a major source of fresh water. Increasing need to water in Iran, causing to immensely utilization and ground water balance disorder, so that state of ground water in many of area is negative.The purpose of this study is to investigate the trend of changes in some of the characteristics of groundwater during the period 1374 to 1387 is Segzi plain. For...

2014
MARTINA ZELEŇÁKOVÁ

This paper deals with the research of monthly precipitation trends in climatic stations in Libya and Slovakia. The non-parametric Mann-Kendall statistic test was applied to detect trends and to assess the significance of the trends in the time series. The evaluation was done for the time period from November to October. Trend analysis of rainfall data series for 1970–2010 did not show any clear...

Climate variability and change is threatening water resources around the world. One hundred and fourtheen (114) stations from Reference Hydrometric Basin Network (RHBN) around Canada with at least 30 years continuous data (up to 2011) were selected to study the trend in mean annual runoff for different periods of 30 to 100 years in step 10 years by non-parametric Mann-Kendall test. Effect of sh...

Journal: :Revista de saude publica 2009
Sâmya Silva Pacheco Cynthia Braga Ariani Impieri de Souza José Natal Figueiroa

OBJECTIVE To analyze the effect of folic acid-fortified foods on the prevalence of neural tube defects in live newborns. METHODS Longitudinal study with newborns from the city of Recife, Northeastern Brazil, between 2000 and 2006. Data analyzed were obtained from the Sistema Nacional de Informações de Nascidos Vivos (National Information System on Live Births). Neural tube defects were define...

2013
Benfu Zhao Jianhua Xu Zhongsheng Chen Ling Bai Peng Li

The temperature data from 3 meteorological stations (Kashi, Ruoqiang, and Hotan) in the South of Tarim River Basin (STRB) during 1964-2011 were analyzed by Mann-Kendall test and correlation analysis. The results from Mann-Kendall test show that the surface temperature (ST), 850 hPa temperature (T850), and 700 hPa temperature (T700) exhibited upward trends, while 300 hPa temperature (T300) revea...

Journal: :journal of biostatistics and epidemiology 0
elham ahmadnezhad national institute of health research, tehran university of medical sciences, tehran, iran zhaleh abdi department of health expenditure, national institute of health research, tehran university of medical sciences, tehran, iran abolhassan safdari department of infectious disease, zahedan university of medical sciences, zahedan, iran farshid fayyaz-jahani academic center for education, culture and research center, urmia, iran sheida malek-afzali department of environment and occupational health center, ministry of health, tehran, iran soraya fathollahi department of health in disasters and emergencies, international campus, tehran university of medical sciences, tehran, iran

background & aim: the aim of the study was to define the epidemiological characteristics of most important infectious diseases in iran in recent decades. methods & materials: this was a situation trend analysis of infectious diseases (vector and water borne disease, and food borne diseases) in recent decades based on data availability. three significance levels were used for mann-kendall test (...

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