Results 1 to 10 of about 71,936 (130)
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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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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Propulsion and Power Research, 2022 This study discusses the development of a mathematical model that is capable of predicting the drop size mean diameter of the spray generated by a pressure swirl atomizer, considering the effects of the liquid's viscosity and the geometrical parameters of this type of injector, as well as the angle of incidence of the inlet channels (ψ and β) and ...
Ronceros Rivas, Julio R. +3 more
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Measuring Geometric Mean Diameter of fruits and vegetables using Light Sectioning Method [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2010 This paper proposes a new technique to measure the geometric mean diameter (GMD) of selected fruits and vegetables calculated from a three-dimensional (3D) image by computer vision system (CVS).
Navaphattra Nunak, Taweepol Suesut
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Geometry quantification for growth assessment of abdominal aortic aneurysms under surveillance [PDF]
Scientific ReportsAbdominal Aortic Aneurysms (AAAs) are localized expansions of the abdominal aorta with complex growth patterns, which offer challenges in accurately characterizing aneurysm growth and morphological evolution using traditional maximum diameter $$(D_{max})$
Juan C. Restrepo +8 more
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Connection of the Radish Seed's Physical Characteristics with the Bottom Holes Design of the Seeder Device [PDF]
Journal of Soil Sciences and Agricultural Engineering, 2023 Various physical properties of radish seeds were determined as indicators during the hole design of the seeder bottom. The principal dimensions (thickness, width, and length), geometric mean diameter, arithmetic mean diameter, seeds surface area, bulk ...
Z. E. Ismail +2 more
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Identification of some Physical and Mechanical Properties of Maize Grains [PDF]
Journal of Soil Sciences and Agricultural Engineering, 2021 The importance of maize for human, livestock and poultry regarding to use as feed or as dry feed industry. Identified physical and mechanical properties of maize grains are important to design the planter/seeder (hopper, metric device, tube), grading ...
O. Omar, A. El Shal, Reem Mohammed
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Soil aggregation indexes and chemical and physical attributes of aggregates in a Typic Hapludult fertilized with swine manure and mineral fertilizer [PDF]
International Journal of Recycling of Organic Waste in Agriculture, 2021 Purpose The objective was to evaluate the effects of mineral fertilizers and swine manure fertilization on soil aggregation indexes and on chemical and physical attributes of aggregates in Typic Hapludult managed under minimum tillage system.
Guilherme Wilbert Ferreira +7 more
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Agriculture, 2022 Farmland shelterbelts are widely used to reduce wind erosion, maintaining the ecological and food security of the black soil plain region of northeast China. In recent years, the protective effect of shelterbelts has been reduced due to tree degeneration.
Tongwei Kong +7 more
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IOP Conference Series: Earth and Environmental Science, 2021 Abstract Moisture content and particle dimension of coffee beans are the two important characteristics which often needed in many postharvest handling processes. This research was intended to investigate the effect of types and moisture contents on the changes of sphericity and geometric mean diameter of coffee beans.
A P Khansa, N Bintoro
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