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Soil spatial variability impact on the behavior of a reinforced earth wall
Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 518-531 doi: 10.1007/s11709-020-0611-x
关键词: reinforced earth wall geosynthetic random field spatial variability Monte Carlo simulation
Quantifying and mapping spatial variability of Shanghai household carbon footprints
Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU
《能源前沿(英文)》 2015年 第9卷 第1期 页码 115-124 doi: 10.1007/s11708-015-0348-8
关键词: household carbon emissions spatial variability energy policy Shanghai China
Rajarshi PRAMANIK, Dilip Kumar BAIDYA, Nirjhar DHANG
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 478-489 doi: 10.1007/s11709-021-0698-8
关键词: finite element method square footing reliability analysis fuzzy set theory coefficient of variation spatial variability
Influence of the sewage irrigation on the agricultural soil properties in Tongliao City, China
Hong YAO, Shichao ZHANG, Xiaobo XUE, Jie YANG, Kelin HU, Xiaohua YU
《环境科学与工程前沿(英文)》 2013年 第7卷 第2期 页码 273-280 doi: 10.1007/s11783-013-0497-0
关键词: spatial variability soil properties groundwater and sewage irrigation
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 doi: 10.15302/J-FASE -2020355
Agriculture faces the dual challenges of food security and environmental sustainability. Here, we investigate current maize production at the field scale, analyze the yield gaps and impacting factors, and recommend measures for sustainably closing yield gaps. An experiment was conducted on a 3.9-ha maize seed production field in arid north-western China, managed with border and drip irrigation, respectively, in 2015 and 2016. The relative yield reached 70% in both years. However, drip irrigation saved 227 mm irrigation water during a drier growing season compared with traditional border irrigation, accounting for 44% of the maize evapotranspiration (ET). Yield variability under drip irrigation was 12.1%, lower than the 18.8% under border irrigation. Boundary line analysis indicates that a relative yield increase of 8% to 10% might be obtained by optimizing the yield-limiting factors. Plant density and soil available water content and available nitrogen were the three major factors involved. In conclusion, closing yield gaps with agricultural sustainability may be realized by optimizing agronomic, irrigation and fertilizer management, using water-saving irrigation methods and using site-specific management.
关键词: boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
Fuel variability effect on flickering frequency of diffusion flames
Jizhao LI, Yang ZHANG
《能源前沿(英文)》 2009年 第3卷 第2期 页码 134-140 doi: 10.1007/s11708-009-0034-9
关键词: fuel variability flickering frequency diffusion flames dynamics of combustion
李保国,白由路,胡克林,黄元仿,陈德立
《中国工程科学》 2001年 第3卷 第4期 页码 42-45
通过GPS定位取样分析和GIS处理,研究了黄淮海平原浅层地下水中NO3-N含量的空间变异和分布特征。结果表明,黄淮海平原浅层地下水中NO3-N含量在35~50km的取样密度下,没有半方差结构,各取样点之间变异性较大;黄淮海平原有10%的面积浅层地下水中NO3-N含量超过20 mg·L-1,主要分布在天津至济南一线和淮河流域的新蔡、阜阳和蚌埠一带。徐州至连云港一带的苏北地区及山东的潍坊地区,浅层地下水中的NO3-N含量一般在10~20 mg·L-1之间,约占黄淮海平原总面积的11.5%。浅层地下水中NO3-N 的含量与地下水埋深密切相关,NO3-N含量超过20 mg·L-1的地下水埋深一般在3 m以上,地下水埋深在10 m以下时,其中的NO3-N含量均不超过10mg·L-1。这表明,目前通过土壤NO3-N的淋失对该区地下水中 NO3-N含量影响深度一般不超过10 m。此项研究结果对于黄淮海平原持续发展,制定优化的高效水肥管理措 施和方案有一定指导意义。
Bruno SUDRET,Hung Xuan DANG,Marc BERVEILLER,Asmahana ZEGHADI,Thierry YALAMAS
《结构与土木工程前沿(英文)》 2015年 第9卷 第2期 页码 121-140 doi: 10.1007/s11709-015-0290-1
关键词: polycrystalline aggregates crystal plasticity random fields spatial variability correlation structure
Treatment, residual chlorine and season as factors affecting variability of trihalomethanes in small
Roberta DYCK,Geneviève COOL,Manuel RODRIGUEZ,Rehan SADIQ
《环境科学与工程前沿(英文)》 2015年 第9卷 第1期 页码 171-179 doi: 10.1007/s11783-014-0750-1
关键词: drinking water residual chlorine seasonal variability small municipal systems treatment technologies trihalomethanes
Distribution and temporal variability of the solar resource at a site in south-east Norway
Muyiwa S. ADARAMOLA
《能源前沿(英文)》 2016年 第10卷 第4期 页码 375-381 doi: 10.1007/s11708-016-0426-6
关键词: coefficient of variation global solar radiation diffuse ratio albedo PV energy systems
Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 525-544 doi: 10.15302/J-FASE-2020355
关键词: boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
Shallow foundation response variability due to soil and model parameter uncertainty
Prishati RAYCHOWDHURY,Sumit JINDAL
《结构与土木工程前沿(英文)》 2014年 第8卷 第3期 页码 237-251 doi: 10.1007/s11709-014-0242-1
关键词: shallow foun dation sensitivity analysis centrifuge data first-order-second-moment (FOSM) method parameter uncertainty
《环境科学与工程前沿(英文)》 2022年 第16卷 第2期 doi: 10.1007/s11783-021-1455-x
• Emissions from 53 in-use diesel-fueled off-road equipment were measured.
关键词: Off-road equipment Portable emission measurement system (PEMS) Real-world emissions Diesel engine
《结构与土木工程前沿(英文)》 2022年 第16卷 第1期 页码 117-130 doi: 10.1007/s11709-021-0788-7
关键词: waste copper slag quantification of variability goodness-of-fit test seismic risk assessment PSDM
Industrial eco-efficiency and its spatial-temporal differentiation in China
Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV
《环境科学与工程前沿(英文)》 2012年 第6卷 第4期 页码 559-568 doi: 10.1007/s11783-012-0400-4
关键词: industrial eco-efficiency data envelopment analysis (DEA) model exploratory spatial data analysis (ESDA)
标题 作者 时间 类型 操作
Soil spatial variability impact on the behavior of a reinforced earth wall
Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI
期刊论文
Quantifying and mapping spatial variability of Shanghai household carbon footprints
Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU
期刊论文
Reliability assessment of three-dimensional bearing capacity of shallow foundation using fuzzy set theory
Rajarshi PRAMANIK, Dilip Kumar BAIDYA, Nirjhar DHANG
期刊论文
Influence of the sewage irrigation on the agricultural soil properties in Tongliao City, China
Hong YAO, Shichao ZHANG, Xiaobo XUE, Jie YANG, Kelin HU, Xiaohua YU
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL SUSTAINABILITY IN NORTH-WEST CHINA
期刊论文
Characterization of random stress fields obtained from polycrystalline aggregate calculations using multi-scale stochastic finite elements
Bruno SUDRET,Hung Xuan DANG,Marc BERVEILLER,Asmahana ZEGHADI,Thierry YALAMAS
期刊论文
Treatment, residual chlorine and season as factors affecting variability of trihalomethanes in small
Roberta DYCK,Geneviève COOL,Manuel RODRIGUEZ,Rehan SADIQ
期刊论文
Distribution and temporal variability of the solar resource at a site in south-east Norway
Muyiwa S. ADARAMOLA
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL SUSTAINABILITY IN NORTH-WEST CHINA
Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU
期刊论文
Shallow foundation response variability due to soil and model parameter uncertainty
Prishati RAYCHOWDHURY,Sumit JINDAL
期刊论文
Quantification of emission variability for off-road equipment in China based on real-world measurements
期刊论文
Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete
期刊论文