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...

This study aims to investigate the influential role of space weather parameters on transmission COVID-19. Solar radio flux, interplanetary magnetic field, Dst index, sunspot number, and solar wind speed were utilized represent variables. The association considered variables number confirmed COVID-19 cases worldwide along with five geographical categories, i.e. Asia, Europe, Africa, South, North...

Among worldwide tropical forest ecosystems, the Atlantic of Brazil stands out as a highly fragile area and biodiversity hotspot, with high degree endemism. The Caparaó National Park is an important conservation for this biome, where recent studies have found new species animals plants, including endemic vulnerable ones. We analyzed interannual seasonal trends in vegetation its buffer zone, usin...

The disadvantages of apriori algorithm are firstly discussed. Then, a new measure of kendall-τ is proposed and treated as an interest threshold. Furthermore, an improved Apriori algorithm called K -apriori is proposed based on kendall-τ correlation coefficient. It not only can accurately find the relations between different products in transaction databases and reduce the useless rules but also...

Nonparametric correlation measures at the Kendall and Spearman correlation are widely used in the behavioral sciences. These measures are often said to be robust, in the sense of being resistant to outlying observations. In this note we formally study their robustness by means of their influence functions. Since robustness of an estimator often comes at the price of a loss in precision, we comp...

introduction earth has ever been exposed to environmental hazards. the hazards are continually occurring in the world in the recent years. among them, atmospheric elements have created many human and financial losses in different regions. one of the hazards is dust events and in its severe case is dust storm. it happens more frequently in arid and semiarid regions in deserts and their surroundi...

Abstract Mean monthly streamflow records of ten gauging stations in the Mae Klong River Basin, Thailand, were analyzed for trends using non-parametric approaches period 2000–2015. The statistical significance was tested on monthly, seasonal, and annual scales three tests; Mann–Kendall (MK), Spearman's rho (SR), innovative trend analysis (ITA) a 5% level. grouped into two categories: naturalized...

The type of precipitation is one the factors taken into consideration when deciding on most optimal drainage system. Drainage systems are used to prevent landslides caused by water erosion. Rainfall affect rate infiltration and intensity surface runoff thus occurrence, course effectiveness erosion processes [1, 2, 3]. Knowledge local trends will help apply precautions minimise risk adverse even...

This paper reviews the present experimental knowledge of the properties of the tau lepton and the tau neutrino. The conventional theory of lepton properties and interactions is summarized; and that theory is compared with experiment. Future directions for research in tau and tau neutrino physics are described.