A5101786168- Water resources management and optimization
- Water Resources and Sustainability
- Remote Sensing and Land Use
- Infrastructure Maintenance and Monitoring
- Plant responses to water stress
- Agricultural Innovations and Practices
- Soybean genetics and cultivation
- Catalysis and Hydrodesulfurization Studies
- Horticultural and Viticultural Research
- Energetic Materials and Combustion
- Neural dynamics and brain function
- Geophysical Methods and Applications
- Structural Response to Dynamic Loads
- Plant Ecology and Soil Science
- High-Velocity Impact and Material Behavior
- Plant Water Relations and Carbon Dynamics
- Water Systems and Optimization
- Occupational Health and Safety Research
- ECG Monitoring and Analysis
- Safety and Risk Management
- EEG and Brain-Computer Interfaces
- Non-Destructive Testing Techniques
- Asphalt Pavement Performance Evaluation
- Lignin and Wood Chemistry
- Environmental Changes in China
Technische Universität Berlin
2021
Brandeis University
2020
Gansu Agricultural University
2011
Tianjin Vocational Institute
2006
Regular damage detection plays an important role in timely pavement maintenance. However, the existing methods struggle to efficiently and accurately identify category contour of damage. Therefore, this paper proposes a Road-Mask R-CNN mobile model automatically segment measure multiple damages. First, optimized k-means clustering algorithm is used intelligently determine size ratio anchor. Subsequently, traditional nonmaximum suppression (NMS) replaced by distance intersection over union...
水资源短缺已成为制约内陆干旱区农业生产和经济社会可持续发展的关键因子。然而农户生产技术效率不高、灌溉用水效率低下、水资源浪费严重已成为不争事实。为此, 基于农户这一微观视角, 运用实证调查和定量分析相结合的方法, 在黑河中游选择典型区域的甘肃省民乐县和临泽县进行了调查研究。结果表明, 农户生产技术效率远高于其灌溉用水效率, 民乐县和临泽县总体样本农户的平均生产效率分别为83.82%和83.16%, 而其平均灌溉用水效率分别为24.54%和22.16%。这表明在现有技术条件和生产要素投入不变的情况下, 若消除效率损失, 民乐县小麦的单位产出可能增加16.18%, 临泽县制种玉米的单位产出可能增加16.84%; 同时也表明相对于现有生产条件下可行的最小水投入量, 民乐县被访农户的小麦生产浪费了75.46%的水资源, 临泽县被访农户的制种玉米生产浪费了77.84%的水资源。结果再次显示, 农户生产低效主要是由生产技术非效率因素引起的, 民乐县这一因素占73.45%, 其余26.55%是农户控制不了的因素引起的; 临泽县该因素占76.58%, 农户控制不了的因素占23.42%。而且,...
在甘肃河西走廊干旱荒漠区研究了覆膜与不覆膜条件下不同滴灌水量对酿酒葡萄生长、光合特征及产量的影响。结果表明: 在不同滴灌水量下, 葡萄新梢长、二次新梢长和主蔓基部直径均随滴灌水量的增加而增大, 且覆膜处理下, 滴灌水量低于不覆膜处理时, 上述3项指标等于或略大于不覆膜处理, 说明覆膜有利于葡萄生长。不同滴灌水量下, 葡萄净光合速率和蒸腾速率、气孔导度的日变化规律相近, 均总体呈下降趋势, 而胞间CO<sub>2</sub>浓度呈降低?升高趋势; 滴灌水量为240 mm和300 mm覆膜处理(T1和T2)的光合指标值低于灌水量为360 mm和420 mm的覆膜处理(T3和T4)和滴灌水量为360 mm的不覆膜CK处理。T1处理的水分利用效率高于T2、T3、T4和CK处理。回归分析表明, 不同滴灌水量下, 葡萄的胞间CO<sub>2</sub>浓度与土壤水分相关性最高, 气孔导度次之, 净光合速率和蒸腾速率较低。对不同处理下葡萄产量和品质的研究结果表明, 覆膜各处理的葡萄产量高于不覆膜的CK处理, 且含糖量以不覆膜的CK处理最高, 灌水量最低(240...
As a new antiseepage reinforcement material, polyurethane grouting material has been widely studied in terms of its static mechanical properties. However, research on dynamic properties is relatively rare. In this research, considering the influence explosive charge weight, air contact and close-in explosion experiments polymer slabs were carried out. The failure mode damage spatial distribution characteristics explored. Pressure time history curve shock wave was obtained using an tester....
To reveal factors that affect farmers' water saving willingness, we used the analysis of logistic regression model, had an empirical investigation with household questionnaire in middle basin Heihe River, second largest inland river arid area Northwest China. The results show personal (age, education, being a village cadre, or MCCP), (proportion agricultural income, degree understanding water-saving methods and join WUA) farm (a larger plowland, higher irrigation cost, irrigating way) were...