Feature Selection Using Parallel Genetic Algorithm for the Prediction of Geometric Mean Diameter of Soil Aggregates by Machine Learning Methods [PDF]
Arid Land Research and Management, 2014 Aggregate stability is a useful soil physical dynamic index of soil resistivity to surface wind and water erosion in all ecosystems, especially, in arid and semi-arid regions. Two machine learning techniques including support vector machines (SVMs) and artificial neural networks (ANNs) were used to develop predictive models for the estimation of ...
Besalatpour, AA +4 more
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A Comparison of the Arithmetic and Geometric Means in Estimating Stump Diameter, Basal Area, and Volume in Appalachian Hardwoods [PDF]
Northern Journal of Applied Forestry, 2007 Abstract The difference between the use of the arithmetic and geometric means for estimation of average stump diameter, stump cross-sectional area and estimated tree volume was investigated using measurements from 739 stumps from an Appalachian hardwood stand located in central West Virginia.
Harry V. Wiant, John R. Brooks
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Genesis of New Particle Formation Events in a Semi-Urban Location in Eastern Himalayan Foothills
Atmosphere, 2023 New particle formation (NPF) events identified using scanning mobility particle sizer (SMPS) measurements, their subsequent growth and other characteristics over Dibrugarh, a semi-urban location in the eastern Himalayan foothills (EHF), during November ...
Barlin Das +4 more
doaj +1 more source
Effect of chick weight, geometric mean diameter and sodium level in prestarter diets (1 to 7 days) on broiler perfomance up to 21 days of age [PDF]
Revista Brasileira de Ciência Avícola, 2004 Seven hundred and twenty Ross 308 chicks were raised in a controlled environment room, distributed in a factorial design with 3 hatching chick weights (37, 40 and 44 g), 3 geometric mean diameter (GMD) (0.561; 0.783 and 0.997 mm) and 4 total sodium levels (Na) (0.12; 0.24; 0.36 and 0.48%) in the pre-starter diet (1 to 7 days). From 8 to 21 days (d) one
Ribeiro, AML +4 more
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The Effect of Zeolite on Aggregate Stability Indices
مجله آب و خاک, 2016 Introduction: Soil structural stability affects the profitability and sustainability of agricultural systems. Particle size distribution (PSD) and aggregate stability are the important characteristics of soil. Aggregate stability has a significant impact
F. Sohrab, N. Abbasi, A. Mahdipour
doaj +1 more source
Journal of Experimental Agriculture International, 2019 The objective of this work was to study the influence of three management systems on the physical attributes and productivity of irrigated wheat, cultivar BRS-254, in the city of Tangara da Serra, MT. The soil physical attributes were: weighted mean diameter (DMP) and geometric mean diameter (DMG).
Patrícia Monique Crivelari da Costa +9 more
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Coordinated thermal and optical observations of Trans-Neptunian object (20000) Varuna from Sierra Nevada [PDF]
, 2002 We report on coordinated thermal and optical measurements of trans-Neptunian object (20000) Varuna obtained in January-February 2002, respectively from the IRAM 30-m and IAA 1.5 m telescopes.
A. Doressoundiram +17 more
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Fluctuating semiflexible polymer ribbon constrained to a ring [PDF]
, 2007 Twist stiffness and an asymmetric bending stiffness of a polymer or a polymer bundle is captured by the elastic ribbon model. We investigate the effects a ring geometry induces to a thermally fluctuating ribbon, finding bend-bend coupling in addition to ...
Adams +24 more
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Evolution of particle size distribution in air in the rainfall process via the moment method [PDF]
, 2012 Population balance equation is converted to three moment equations to describe the dynamical behavior of particle size distribution in air in the rainfall.
Gan Fu-Jun, Lin Jian-Zhong
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Comparison of the Arithmetic and Geometric Means in Estimating Crown Diameter and Crown Cross-Sectional Area [PDF]
Southern Journal of Applied Forestry, 2010 Abstract The use of the geometric and arithmetic means for estimating tree crown diameter and crown cross-sectional area were examined for trees with crown width measurements taken at the widest point of the crown and perpendicular to the widest point of the crown.
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