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A New Qualitative Typology to Classify Treading Water Movement Patterns
Generalizability theory clinical education lifesaving
2016/1/11
This study proposes a new qualitative typology that can be used to classify learners treading water into different skill-based categories. To establish the typology, 38 participants were videotaped wh...
蓄水多坑入渗条件下土壤水分运动建模与试验（Numerical Simulation on Soil Water Movement under Water Storage Pits Irrigation）
土壤水分运动 三维入渗 数值模拟 蓄水坑灌
2010/4/1
针对蓄水坑灌坑内水头高且非恒定和土壤入渗边界复杂的特点，建立了蓄水多坑三维入渗及土壤水分运动数学模型，采用ADI交替方向隐式差分格式结合Gauess-Seidel迭代法对模型进行求解，并进行了试验验证，结果表明计算值与实测值吻合较好，说明所建立的数学模型正确，采用的数值求解方法是可行的。 Aimed at the specialties of infiltration head higher an...
乔灌篱沟蓄沟道土壤水分运动数值模拟（Numerical Simulation for Soil Water Movement of Gutter under Water Conservation in Arbor-shrub-hedge-gutter）
乔灌篱沟蓄 土壤水分运动 有限元
2009/8/11
在分析乔灌篱沟蓄沟道布置和水分运动特点的基础上，建立了乔灌篱沟蓄沟道二维非饱和土壤水分运动模型，采用Galerkin有限单元法对方程进行数值求解。室内验证试验结果表明，土壤含水率和湿润锋的模型计算值与实测值吻合较好，说明乔灌篱沟蓄沟道土壤水分运动模型正确，采用有限元法求解可行。
Water Movement Analysis on Satsuma Mandarin Trees under Mulching Cultivation
National Agricultural Research Center for Western Region
2009/7/10
We developed a transpiration measurement system for satsuma mandarin trees to analyze water movement under a mulching sheet cultivation system in summer, and showed that the daily average water loss f...
Simulation of water movement and isoproturon behaviour in a heavy clay soil using the MACRO model
water movement heavy clay soil isoproturon behaviour
2009/6/8
In this paper, the dual-porosity MACRO model has been used to investigate methods of reducing leaching of isoproturon from a structured heavy clay soil. The MACRO model was applied to a pesticide leac...
Influence of Clay on Water Movement in Coarse-Textured Soils
Clay fraction Hydraulic conductivity Particle size Soil Water movement
2012/1/4
Effects of clay content on saturated hydraulic conductivities (k) of two coarse textured soils, Vista (mixed thermic Typic Xerochrepts) and Hanford (mixed nonacid Typic Xerorthents), and a medium text...