搜索结果: 1-11 共查到“农业工程 Farm”相关记录11条 . 查询时间(0.055 秒)
System Identification of a Farm Vehicle Using Carrier-Phase Differential GPS
System Identification Farm Vehicle Carrier-Phase Differential GPS
2015/6/29
The automatic operation of farm vehicles can have great benefits both in farm productivity and hazardous or impossible operations. Automatic control offers many potential improvements over human contr...
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....
Multivariate statistical methods as a tool of financial analysis of farm businesses
financial analysis financial ratios multivariate statistical methods correlation analysis discriminant analysis cluster analysis
2014/3/26
The paper is focused on the evaluation of the possibilities of analysing the relations between economic and financial indicators of farm businesses by the application of multivariate statistical metho...
This 8-page publication in the Agricultural Alternatives series discusses understanding the basic concepts and applications of federal income tax law.
基于农田不平度的拖拉机机组输入谱推导与振动仿真（Deduction of Input Spectrum of Tractor-implement Combination and Vibration Simulation Base on Farm Surface Roughness）
农田不平度 拖拉机作业机组 输入谱
2009/12/28
推导了拖拉机为两轴四轮、播种机为单轴两轮的六轮输入谱矩阵，可用于研究牵引式播种作业机组受农田不平度激励所产生振动的频域特性。用Roberson-Wittenburg(R-W)方法建立了牵引机组的22自由度动力学模型，然后根据R-W法建立了机组的动力学普遍方程，在对方程进行运动学和动力学分析的基础上，采用多步Geal-预估-校正法进行了时域求解，采用等效的统计线性化方法进行频域求解，对比分析表明动力...
茶园天气信息采集与无线发送装置设计（Apparatus of Climatic Information Acquisition and Wireless Transmission for Tea Farm）
茶园 天气参数 霜冻害
2009/11/3
基于单片机和GSM技术，开发了用于茶园防霜的天气参数采集与无线发送的新型装置。其硬件系统由AT89C52单片机、A/D转换器、TC35i GSM模块、RAM数据存储器、键盘显示器、微型打印机、天气参数传感器及电源等组成。软件采用汇编语言编制，主要功能包括：系统设置、短信接收和发送、数据采集存储和查询、结果显示及打印管理等。该装置能实现可靠的天气信息实时采集和无线传送，可用于茶园小气候的监测和晚霜冻...
农田信息采集单多跳共存LEACH算法（Improved LEACH Algorithm with Coexistence of Single-hop and Multi-hop Based on the Farm Fields）
农田信息采集 无线传感器网络 LEACH算法
2010/4/1
针对农田环境信息量丰富的特点，提出一种基于LEACH算法的改进型无线传感器网络路由算法——LEACH-SMC。在LEACH-SMC算法的稳态阶段，簇头节点到基站间通信采用临界距离来判断和选择多跳或单跳方式，在多跳方式中采用基于最小能量消耗的路由方式。应用Matlab对LEACH-SMC算法和LEACH算法进行仿真对比分析，结果表明，LEACH-SMC算法能提高网络有效覆盖面积并延长整个网络的寿命。...
基于GSM的农田气象信息远程监控系统设计（GSM-based Remote Monitoring System of Farm Field Meteorological Information）
农田气象 远程监控 无线网络 全球移动通信系统
2009/5/22
针对传统农田气象信息远程传输方式中布线难、成本高、传输距离有限、入网许可限制等不足，以广泛覆盖的GSM无线网络为基础，提出了一种实现远程农田气象信息采集、传输和监控的技术方案。详细讨论了实现该方案的系统结构模型、工作原理，给出了系统相应的软硬件设计方案，并定义了一种应用层通信协议，以实现系统中各类参数信息、控制信息的有效传输和识别，减小信息阻塞现象。实验表明，该方案系统结构模型合理，软硬件设计可行...
Research of biological agents effects on reduction of ammonia concentration in stables of intensive farm animals breeding
ammonia emissions living environment slurry pigs poultry
2014/2/28
In the study are presented results of experiments using bio-technological agents Amalgerol, Bio-Algeen G-40 and Biostrong 510 in intensive pig, poultry breeding and cattle slurry treatment for ammonia...
Micro-economic analysis of farm restructuring in Central and Eastern Europe: an overview of major results
farm restructuring transition agriculture rural development
2014/3/28
The aim of this paper is to summarize the results of the EU Phare ACE research project P97-8158-R, “Micro-economic analysis of farm restructuring in Central and Eastern Europe”, that tries to fill the...
Multivariate statistical methods as a tool of financial analysis of farm businesses
financial analysis financial ratios multivariate statistical methods correlation analysis discriminant analysis cluster analysis
2014/3/26
The paper is focused on the evaluation of the possibilities of analysing the relations between economic and financial indicators of farm businesses by the application of multivariate statistical metho...