搜索结果: 1-6 共查到“工学 field experiment”相关记录6条 . 查询时间(0.25 秒)
Characteristics of the boundary layerat Ny-Ålesund in the Arctic during the ARTIST field experiment
Arctic sodar planetary boundary layer turbulence
2015/9/16
A preliminary analysis of boundary layer data acquired during the Arctic Radiation and Turbulence Interaction
Study Experiment (ARTIST) at Ny-Ålesund (Spitzbergen) in 1998 is presented. As expec...
agricultural soil monitoring using ground-based radar sensor:the gespas in-field experiment
agricultural soil monitoring ground-based radar sensor gespas in-field experiment
2015/9/1
In this paper we present a microwa ve radar sensor developed for agricultural application . The primary objective was t o develop a new cultivator able to adapt its action according to the in -field s...
TESTING MODELS OF SOCIAL LEARNING ON NETWORKS: EVIDENCE FROM A FRAMED FIELD EXPERIMENT
Networks Bayesian learning DeGroot learning
2015/7/15
Theory has focused on two leading models of social learning on networks:
Bayesian and DeGroot rules of thumb learning. These models can yield greatly divergent
behavior; individuals employing rules ...
便携式作物氮素监测仪性能水稻田间测试（Evaluation of Portable Crop Nitrogen Monitoring Instrument Based on Rice Field Experiment）
水稻 氮素含量 监测仪
2010/12/29
设计了2个品种和4个施氮水平的水稻田间试验，采用自行研制的便携式作物氮素监测仪获取各关键生育期的水稻冠层反射光谱信息，并实施田间协同取样和实验室氮素含量测定。通过分析水稻叶片氮含量与冠层光谱反射率及植被指数之间的相关性和定量关系，测试并评价便携式作物氮素监测仪的工作性能。结果表明，便携式作物氮素监测仪具有优异的氮素监测效果和优良的田间工作性能，在其所具备的4个特征波段中，660、710和810n...
1SZ-460型杠杆式深松机设计与试验（Design and Field Experiment on 1SZ-460 Lever-type Subsoiler）
振动深松机 土壤深松 偏心轴
2009/11/3
深松作业可以打破犁底层，在不翻动土壤的前提下可有效改善土壤的透水、透气性能，为植物根系提供更大的伸展空间。本文针对普通深松机械作业中存在的牵引阻力大、土壤松碎效果差等问题，研制出一种基于杠杆原理的振动式深松机。深松铲形式为窄凿型，能最大限度地保护土壤、减少水分蒸发。样机在30 cm耕深时振动作业与无振动作业的牵引阻力对比试验表明，振动深松作业可有效降低机具牵引阻力，降阻幅度可达13%～18%。
Field Experiment with a Hardened GPON Reach Extender with Dual- Parenting Protection
Hardened GPON Dual- Parenting Protection
2015/8/4
Results of a field experiment with a prototype managed GPON reach extender for underground deployment are described. The reach extender has 1+1 protection switching to geographically diverse OLTs.