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Diffusion models for the description of seedless grape drying using analytical and numerical solutions
Optimization Convective Boundary Condition Diffusion Model
2013/2/28
This article compares diffusion models used to describe seedless grape drying at low temperature. The models were analyzed, assuming the following characteristics of the drying process: boundary condi...
The partnership models of agricultural sustainable development based on Multiple Criteria Decision Making (MCDM) in Iran
AHP partnership Iran sustainable agricultural development
2011/1/13
Sustainable development and the definition of indicators to assess progress towards sustainability have become a high priority in scientific research. The purpose of this study was two-fold: first, to...
Building linear parameter varying models using adaptation, for the control of a class of nonlinear systems
Linear parameter varying (LPV) systems nonlinear systems adaptive systems self-scheduling
2010/3/17
In this paper a novel method is proposed for constructing linear parameter varying (LPV) system models through adaptation. For a class of nonlinear systems, an LPV model is built using its linear part...
Seasonal temperature-based models for reference evapotranspiration estimation under semi-arid condition of Malawi
Irrigation agricultural water management crop water requirement wind effect modeling
2010/9/10
The importance of evapotranspiration in agricultural water management has been widely reported without doubt. The FAO Penman Monteith (FPM) equation is the sole recommended estimation method of refere...
黄芩黄酮浸提过程动力学模型适用性分析（Applicability Analysis of Kinetic Models for Extracting Flavonoids from Scutellariae Radix）
黄芩 黄酮 浸提
2009/5/22
0.9800，RSD小于1.00%）；但一级两项模型的快速、慢速浸提速率常数等参数随温度变化的趋势未能反映相应的物理意义。因此，一级一项动力学模型更适用于黄芩黄酮浸提过程的模拟。
基于PCA_SVR的油菜氮素光谱特征定量分析模型（Rape Nitrogen Content Spectral Character Models Based on PCA_SVR Method）
油菜 氮素 光谱分析
2009/5/22
研究了采用光谱分析技术对油菜植株全氮进行定量分析的方法。采用逐步回归法对氮素的光谱特征波长进行选择，为克服光谱变量间多重共线性的影响，对变量进行了主成分分析（PCA），为提高模型的拟合优度，应用支持向量机回归(SVR)建立油菜氮素的定量分析模型。对不同氮素水平的油菜冠层光谱数据进行分析，结果表明，406、460、556、634、662、675nm的光谱反射率与油菜含氮量呈极显著相关。植株全氮SVR...
Leaf Area Prediction Models（Uzçelik-I）For Different Horticultural Plants
Leaf Area Prediction Models（Uzç elik-I） Different Horticultural Plants
2009/1/15
A total of 343 leaves were selected randomly from fifteen different horticultural plants, that are widely grown under Samsun ecological conditions. Lamina width, length and leaf area were measured. Th...
Determining Suitable Probability Distribution Models For Flow and Precipitation Series of the Seyhan River Basin
Frequency Analysis Goodness-of-Fit Tests Flow and Precipitation Series
2009/1/13
The frequency analysis of the largest, or the smallest, of a sequence of hydrologic events has long been an essential part of the design of hydraulic structures. Therefore, the question of better fit...
Attempt to use the SWATREZ and UNDYS models for the simulation of ground water pollution in agrosystems irrigated by municipal sewage
modelling waste water ground water nitrogen hydromorphic soil
2008/12/2
For the simulation of water movement and pollutant transport in the hydromorphic soil profile two numerical models SWATREZ and UNDYS were used. These models are based on water movement in porous mater...
Models of particle aggregation and their usefulness
particle aggregation models soil structure
2008/12/2
Two major approaches of modelling aggregation of soil particles (morphological and virtual) have been discussed. Both approaches were found to be complementary and necessary to gain insight in the ag-...
Application of SLEMSA and USLE erosion models for potential erosion hazard mapping in south-eastern nigeria
topography erodibility tropics West Africa cartography
2008/11/24
Assessment of potential soil erosion aids in detailed farm planning and management. Two potential erosion hazard maps of Anambra and Enugu States of Nigeria were developed by the application of SLEMSA...
Comparison of correlation models for the estimation of the water retention characteristics of soil
soil water retention correlation models
2008/11/21
This paper presents a comparison of three models for the estimation of soil water retention characteristics. They are based on the correlation between soil water content values at chosen values of so...
Comparison of correlation models for the estimation of the water retention characteristics of soil
soil water retention correlation models
2008/11/21
This paper presents a comparison of three models for the estimation of soil water retention characteristics. They are based on the correlation between soil water content values at chosen values of so...
Evaluation of some water extraction models in predicting water uptake of pigeonpea
water extraction model pigeonpea
2008/11/19
There is the need to have model(s) that best describe water uptake for pigeonpea. Three water extraction models published in the literature and one suggested by this author were examined for two pigeo...
Soil colour and spectral analysis employing linear regression models I. Effect of organic matter
soil colour spectral analysis organic matter
2008/11/12
This work comprises an investigation into whether soil reflectance spectral analysis which is employed to calculate the colour characteristics (hue, value, chroma) of soil can be carried out using lin...