Results 11 to 20 of about 13,534,523 (264)

A simplified method to improve water distribution and application uniformity for sprinkler irrigation on sloping land: adjustment of riser orientation

open access: yesWater supply : the review journal of the International Water Supply Association, 2020
To improve the water application uniformity for sprinkler irrigation on sloping land, indoor tests were conducted on an artificial slope (slopes of 0, 0.05, 0.10 and 0.15) to evaluate the effects of two riser orientations, vertical (VO) and ...
Xin Hui   +3 more
semanticscholar   +1 more source

Technical Evaluation of Classic Stationary Sprinkler Irrigation Systems with Travelling Sprinklers in Eghlid, Fars Province [PDF]

open access: yesعلوم و مهندسی آبیاری, 2019
Due to the climatic conditions of Iran, the limitations of irrigation resources, and low irrigation efficiency in traditional methods, on the one hand, and the existence of arenas for the development of blue land and the increasing need for food, on the ...
Samane Kazemi   +2 more
doaj   +1 more source

Tax uniformity as a requirement of justice [PDF]

open access: yes, 2020
Barbara Fried takes the view that uniform taxation-that is, a single rate applicable to all income levels-cannot be defended on any grounds of justice. She goes further by saying that, of all possible rate structures, it might be "the hardest one"?
Delmotte, Charles
core   +1 more source

Testing multivariate uniformity and its applications [PDF]

open access: yesMathematics of Computation, 2000
Some new statistics are proposed to test the uniformity of random samples in the multidimensional unit cube[0,1]d (d≥2).[0,1]^d\ (d\ge 2).These statistics are derived from number-theoretic or quasi-Monte Carlo methods for measuring the discrepancy of points in[0,1]d[0,1]^d.
Liang, Jia-Juan   +3 more
openaire   +1 more source

Uniformity seminorms on $\ell^\infty$ and applications [PDF]

open access: yesJournal d'Analyse Mathématique, 2007
A key tool in recent advances in understanding arithmetic progressions and other patterns in subsets of the integers is certain norms or seminorms. One example is the norms on $\Z/N\Z$ introduced by Gowers in his proof of Szemer di's Theorem, used to detect uniformity of subsets of the integers. Another example is the seminorms on bounded functions in
Host, Bernard, Kra, Bryna
openaire   +4 more sources

EFFICIENCY AND UNIFORMITY OF AN SUBSURFACE DRIP IRRIGATION SYSTEM IN SUGARCANE CROP

open access: yesRevista de Agricultura Neotropical, 2022
Agricultural productivity in irrigated areas depends on several factors, including the design and maintenance of irrigation systems. Excessive or insufficient applications of water affect plant growth and development, hence agricultural productivity ...
José Wibison Ferreira dos Santos   +5 more
doaj   +1 more source

Uniformization: Basics, extensions and applications

open access: yesPerformance Evaluation, 2018
Uniformization, also referred to as randomization, is a well-known performance evaluation technique to model and analyse continuous-time Markov chains via an easier to performance measures via iteration of the one-step transition matrix of the discrete-time Markov chain.
van Dijk, N.M.   +2 more
openaire   +1 more source

Proposição de um modelo matemático para a avaliação do desempenho de sistemas de irrigação A mathematical model for evaluating irrigation systems performance

open access: yesPesquisa Agropecuária Brasileira, 2004
Modelos matemáticos têm sido utilizados para representar a distribuição dos valores de lâmina de água aplicada em uma área irrigada, informação fundamental na avaliação do desempenho de sistemas de irrigação.
Euzebio Medrado da Silva   +3 more
doaj   +1 more source

Effect of Pulsating Pressure on Water Distribution and Application Uniformity for Sprinkler Irrigation on Sloping Land

open access: yesWater, 2019
Crops are highly susceptible to drought in sloping land. Due to its good adaptability to complex terrain, sprinkler irrigation is one of the commonly used methods for sloping land.
Lin Zhang   +3 more
semanticscholar   +1 more source

Caracterização hidráulica do microaspersor Rondo, da Plastro Hydraulic characterization of the Plastro Rondo microsprinkler

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2001
Com o objetivo de se determinar as características hidráulicas do microaspersor Rondo 50 L h-1, de bocal azul, fabricado pela Plastro, conduziram-se testes no Laboratório de Hidráulica da Escola Superior de Agricultura de Mossoró, determinando-se a ...
Roberto S.F. de Holanda Filho   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy