搜索结果: 1-12 共查到“农业工程 data”相关记录12条 . 查询时间(1.062 秒)
Influence of rainfall data on the uncertainty of flood simulation
calibration GLUE method model quality rainfall-runoff model
2016/8/2
The aim of this paper was to determine the influence of factors related to rainfall data on the uncertainty flood simulation. The calculations were based on a synthetic unit hydrograph NRCS-UH. Simula...
UNDERSTANDING SPATIAL VARIABILITY OF CROPPING SYSTEM RESPONSE TO CLIMATE CHANGE IN PUNJAB STATE OF INDIA USING REMOTE SENSING DATA AND SIMULATION MODEL
CropSyst Spatial impact HadCM3 A2 B2 Agricultural system yield
2014/5/6
The present study investigated the impact of climate change, as projected by the Global Climate Model, HadCM3 for two different storyline (A2, B2), on the total crop production of Punjab state of Indi...
Using meteorological data to determine the risk of heat stress
laying hens air temperature air humidity evaporation cooling temperature-humidity index
2014/2/26
This paper first proposes a technique of computing air temperature and humidity in stables based on outdoor air parameters and biological production of animals. The computation technique is outlined. ...
叶片类截面数据特征点精确识别方法（Accurate Recognition Method for Cross-section Data Feature Points of Blades）
叶片 特征识别 小波模极大值
2010/1/28
利用小波模极大值方法可很好地对特征进行识别，并能抑制噪声的影响。利用该方法对叶片截面数据进行特征识别时，某些重要的局部特征在细尺度下会消失，导致数据特征点不能完整识别，针对该情况提出特征尺度因子的概念，以了解数据中所含特征的差异性。特征尺度因子越大意味着可分解尺度数越多，相反则意味着可分解尺度数越少，当数据点的特征差异较大时，可将其分为几段分别进行识别，最后再将各段特征点汇总。实验证明，特征尺度因...
混合模式下的农业机械载荷谱数据管理系统（Realization of Load Spectrum Data Management System for Typical Agricultural Machinery Based on Hybrid Model）
典型农业机械 载荷谱数据库 混合模式
2009/11/24
以拖拉机、联合收获机等典型农业机械载荷谱数据库建设工作为背景，基于B/S与C/S混合模式，利用.NET技术体系设计与实现载荷谱数据库信息管理系统。针对实际情况和工程应用的具体需求制定了系统的总体方案，设计了系统的结构模型，最后完成系统具体模块的开发调试。系统可实现载荷谱数据现代化管理、增加信息沟通渠道、提高结构疲劳寿命研究工作的效率。
散乱点云局部型面参考数据的快速查询算法（Algorithm of Local Model Reference Data Querying for Scattered Points）
逆向工程 散乱点云 动态扩展空心球
2009/8/11
提出了一种散乱点云局部型面参考数据的快速查询算法。该算法改进R*-tree建立散乱点云的空间索引结构，获取采样点所在叶结点，依据该结点MBR构造空心球，深度优先遍历R*-tree获取空心球内数据点，通过动态扩展空心球内外半径实现散乱点云局部型面参考数据的快速获取。实验表明，该算法可适用于各种复杂型面散乱点云，提高了查询的准确性与查询效率。
Long Term Satellite Data Application for Pastureland Biomass Monitoring in Mongolia
Long Term NOAA FY-2C EWBMS Dynamics
2016/4/11
In this paper we included the results of new approach to estimate pasture biomass amount for livestock fodder and pasture carrying capacity using both of remote sensing and in-situ data over whole ter...
Mapping Broadacre Cropping Practices Using Modis Time Series: Harnessing the Data Explosion
Mapping Broadacre Cropping Practices Modis Time Series Harnessing Data Explosion
2016/4/11
The MODIS (or Moderate Resolution Imaging Spectroradiometer) 250 m EVI dataset provides a valuable ongoing means of characterising and monitoring changes in land use and resource condition. However th...
Neural networks in data mining
association rules data mining decision trees genetic algorithm Kohonen’s self-organizing maps multilayered feedforward neural networks
2014/3/29
To posses relevant information is an inevitable condition for successful enterprising in modern business. Information could be parted to data and knowledge. How to gather, store and retrieve data is s...
Using technology of data collection and data processing in precision farming
Precision Farming MapServer GIS PREFARM data collection
2014/3/29
Data collection, data processing, data presentation and data application in the System of Precision farming guarantee a success of this system in the market. Difficulties of technologies, which are cu...
Land evaluation data bank of Slovakia
and evaluation data bank evaluated soil-ecological unit cadastral area agricultural subject evaluation of agricultural land fund
2014/3/29
Precise categorisation and permanent and completed evidence of agricultural land are necessary for rational utilisation of land fund in Slovakia. Current complex evaluation information system is the o...
Field capacity determination from GPS spatial data
machinery management coefficient of field time utilization spatial data GPS
2014/2/28
For agricultural machinery management the actually reached machines capacity has a considerable importance. The data recorded by GPS monitoring enable to correct machines work productivity under concr...