搜索结果: 1-8 共查到“农业工程 Level-0”相关记录8条 . 查询时间(0.293 秒)
Crop plan optimization under risk on a farm level in the Czech Republic
crop plan crop rotation constraints optimization stochastic programming.
2014/3/31
The precise agricultural operations research models claiming complex solutions and specialized software tools may appear too complicated to truly support the decision making process on the farm level....
xPC环境下CMAC NN在淀粉生产线液位控制中的应用（Application of CMAC Controller in Starch Production-line Liquid-level Based on xPC Environment）
淀粉生产线 自适应 CMAC神经网络
2009/5/22
在分析CMAC神经网络的基础上，提出了利用自适应CMAC神经网络来调节淀粉生产线中乳液的液位。通过对淀粉生产线中某一液位回路进行数学建模，然后对常规PID和自适应CMAC神经网络两种控制器进行了设计与仿真。仿真结果表明，自适应CMAC神经网络在控制效果上明显优于常规PID，并且具有很高的鲁棒性。在Matlab实时开发环境xPC Target下建立了液位实时控制系统，采用快速原型控制方式，具有系统组...
基于灰色GM（1,1）的农业机械化水平预测模型（Prediction Model of Agricultural Mechanization Level in China Based on GM(1,1)）
农业机械化 机械化综合水平 灰色GM(1,1) 预测
2009/5/22
根据1986～2005年我国农业机械化综合水平统计数据，并对由于我国耕地面积统计滞后使得在机耕水平计算中存在误差进行了合理分析和修正，结合数据平滑处理，建立了基于灰色GM(1,1)的我国农业机械化综合水平预测模型。通过残差检验和后验差检验方法对预测结果进行了检验，模型拟合精度较好。采用模型对2006年我国农业机械化综合水平值进行预测，结果表现出较高的预测精度，进一步验证了所建模型的可行性。运用该模...
基于小波变换和BP神经网络的蛋壳破损检测（Crack Detection in Eggs with Multi-level Wavelet Transform and BP Neural Network）
鸡蛋 破损 检测
2009/5/22
提出了一种基于多层小波变换和纹理分析的蛋壳破损检测方法。该方法对获取的鸡蛋透射图像G分量在不同水平上进行小波分解，计算和分析各水平高频细节子图像的纹理特征参数，实验确定最有效的8个特征参数作为BP网络输入，建立结构为8—20—2的BP神经网络蛋壳破损分类模型。实验表明，该方法对无破损蛋、线状破损蛋、网状破损蛋和点状破损蛋的判别正确率分别为95%、90%、95%、80%，平均识别率为90%。
Geomatics Analysis of the Impact of Predicted Sea-Level Rise on the Agriculture along the Coastal Zone of Andhra Pradesh
Climate Change Seal-level Rise Coastal Land use Agriculture Vulnerability
2016/4/7
Global warming induces steric as well as eustatic rise in sea-level, by thermal expansion and addition of ice-melt water, respectively. Although the IPCC (2007) estimated a maximum possible sea-level ...
Diversification of individual farms in Slovakia with regard to production use patterns and level of income
farm restructuring individual farm product specialisation production use income scale of operation
2014/3/29
During the years of transition to market economy, a variety of farming types has evolved in Slovakia. Corporate farming is still pursued on about 80 per cent of the total agricultural land area, but a...
Searching the proportional level of operating costs – specification of the minimum volume of production
proportional costs fixed costs over-proportional costs under-proportional costs unit costs break-even point minimum profit, minimum profitability of production variable costs cost-revenue ration rate of profit
2014/3/28
This article concerns the topic of various types of costs and refers to relations between them. It also solves relations between costs and the output in in-kind units, between costs and revenues (in f...
Evaluation of agri-environmental policy delivery system on regional level – case study in Bílé Karpaty
policy agreement policy actors policy implementation agri-environmental policy farming vs conservation conflict
2014/3/26
Regional officials who are dealing with target groups and should cope with real world limits and conflicts heavily influence implementation of agri-environmental policies. This process is not addresse...