Results 11 to 20 of about 574,803 (279)

Performance of an Automatic Variable-Rate Fertilization System Subject to Different Initial Field Water Conditions and Fertilizer Doses in Paddy Fields

open access: yesAgronomy, 2023
High-performance fertilization equipment with high uniformity is essential for the improvement of fertilizer use efficiency in paddies. The performance of these fertigation systems might be affected by the initial field conditions and fertilizer doses ...
Haiyu Wang   +8 more
doaj   +1 more source

Comparison and technical evaluation of electrostatic, micronair and tractor-mounted lance sprayers in order to control (Carpocasa pomonella L) in apple orchards [PDF]

open access: yesJournal of Agricultural Machinery, 2016
Introduction The efficiency and cost effectiveness of orchard pest management programs are influenced by the skills of managers and sprayer operators who evaluate orchard conditions and alter machine settings and operating techniques to optimize ...
F Amirshaghaghi, M Safari
doaj   +1 more source

Investigation of Air Change Rate in a Single Room Using Multiple Carbon Dioxide Breathing Models in China: Verification by Field Measurement

open access: yesBuildings, 2023
It is difficult to accurately measure the air exchange rate (AER) in residential and office buildings during occupation via on-site field measurement. The tracer gas method was widely applied to estimate the AER in these buildings, and human metabolic ...
Hao Zhuang   +6 more
doaj   +1 more source

$L_p$-norm uniform distribution [PDF]

open access: yesProceedings of the American Mathematical Society, 1997
Summary: The \(L_p\)-norm uniform distribution, which is a generalization of the uniform distribution studied by \textit{S. Cambanis}, \textit{S. Huang} and \textit{G. Simons} [J. Multivariate Anal. 11, 368-385 (1981; Zbl 0469.60019)], is defined for any \(p>0\). Then its marginal distributions and order statistics are studied.
Song, D., Gupta, A. K.
openaire   +2 more sources

Gaussian limits for discrepancies. I: Asymptotic results [PDF]

open access: yes, 1997
We consider the problem of finding, for a given quadratic measure of non-uniformity of a set of $N$ points (such as $L_2$ star-discrepancy or diaphony), the asymptotic distribution of this discrepancy for truly random points in the limit $N\to\infty$. We
André van Hameren   +20 more
core   +3 more sources

A Comparative Study of Standard Center Pivot and Growers-Based Modified Center Pivot for Evaluating Uniformity Coefficient and Water Distribution

open access: yesAgronomy, 2021
The center pivot irrigation system is a type of irrigation technology used to apply water effectively and uniformly over a wide variety of areas and topographies. These irrigation systems’ uniformity of water application greatly affects water use, energy
Hussein Al-Ghobari, Ahmed Z. Dewidar
doaj   +1 more source

Divergence from, and Convergence to, Uniformity of Probability Density Quantiles [PDF]

open access: yes, 2018
The probability density quantile (pdQ) carries essential information regarding shape and tail behavior of a location-scale family. Convergence of repeated applications of the pdQ mapping to the uniform distribution is investigated and new fixed point ...
Staudte, Robert, Xia, Aihua
core   +3 more sources

Experimental Comparison on Distribution Uniformity Among Different Types of Refrigerant Distributors Used in Air-conditioners

open access: yesZhileng xuebao, 2022
When selecting the type of pressure-drop distributor for air conditioners with good distribution performance, the divergence of the distribution uniformity among the existing types of pressure-drop distributors should be checked.
Liu Lu   +5 more
doaj  

Field evaluation of centre pivot sprinkler irrigation system in the North-East of Iran

open access: yesJournal of Water and Land Development, 2017
A field evaluation of the technical performance of centre pivot sprinkler irrigation system was carried out during the maize crop growing season and when operating with different working speeds: S1 - 40%, S2 - 60% and S3 - 80%.
Abedinpour Meysam
doaj   +1 more source

Compact uniform field electrode profiles [PDF]

open access: yes, 1983
By modification of the conformal transformation used by Chang in determining uniform field electrode profiles, a large improvement can be achieved in the uniformity of the electric field strength distribution over the surface of the electrodes. When such
Ernst, Gerard J.
core   +5 more sources

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