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Estimation of groundwater flow system parameters using a modified Kalman filter approach
《Global Geology》1998年第1期120-120,共1页
关键词：FLOW Estimation of groundwater flow system parameters using a modified Kalman filter approach 
青海地区五脉绿绒蒿总黄酮含量测定参数及测定条件设定被引量：1
《青海医学院学报》2013年第4期281-288,共8页常炜 刘亚蓉 
目的通过对青海地区五脉绿绒蒿总黄酮含量测定参数及测定条件的比较研究,确立适用于高海拔试验条件下绿绒蒿属药材中总黄酮含量的测定参数。方法采用单因素考察法对样品提取溶剂、水解酸液的浓度、时间进行了考察,对HPLC法测定五脉绿绒...
关键词：高原 五脉绿绒蒿 总黄酮 高效液相 参数 
WAVELET-BASED ESTIMATOR FOR THE HURST PARAMETERS OF FRACTIONAL BROWNIAN SHEET被引量：6
《Acta Mathematica Scientia》2017年第1期205-222,共18页吴量 丁义明 
supported in part by the National Basic Research Program of China(973 Program,2013CB910200,and 2011CB707802)
It is proposed a class of statistical estimators H = （H1,… ,Hd） for the Hurst parameters H = （H1,… ,Hd） of fractional Brownian field via multi-dimensional wavelet analysis and least squares, which are asymptotic...
关键词：detection of long-range dependence SELF-SIMILARITY Hurst parameters waveletanalysis fractional Brownian sheet 
Singularly perturbed solution for weakly nonlinear equations with two parameters被引量：3
《Applied Mathematics and Mechanics(English Edition)》2007年第10期1343-1348,共6页陈丽华 莫嘉琪 
Project supported by the National Natural Science Foundation of China(Nos.40676016 and 10471039);the National Key Project for Basic Research(Nos.2003CB415101-03 and 2004CB418304);the Key Project of the Chinese Academy of Sciences(No.KZCX3-SW-221);in part by E-Insitutes of Shanghai Municipal Education Commission(No.N.E03004);the Natural Science Foundation of Zhejiang Province of China(No.Y606368).
A class of singularly perturbed boundary value problems of weakly non linear equation for fourth order on the interval [a, b] with two parameters is considered. Under suitable conditions, firstly, the reduced solution...
关键词：NONLINEAR two parameters singular perturbation 
Dependence of Amorphous Formation Ability on Intrinsic Parameters in Dy-Gd-Co-Al Alloys
《Journal of Materials Science & Technology》2009年第5期665-668,共4页Lin Luo Rui Tian Xueshan Xiao 
the financial support of the National Natural Science Foundation of China(No.50571054)
A series of Dy（Gd）-based bulk amorphous alloy rods were prepared by water-cooled copper mold method. Thermal stability and structure of Dy-Gd-Co-Al alloys were investigated by differential scanning calorimetry and X...
关键词：Dy（Gd）-based Glass forming ability Intrinsic parameters 
Influence of Using Parameters on Stirring Uniformity of Mixer被引量：1
《Journal of Wuhan University of Technology(Materials Science)》2011年第1期172-175,共4页刘洪海 
Funded by Ministry of Transportation Construction Projects in Western Transportation (No.200631800076)
Stirring uniformity of mixture depends not only on structural parameters of the mixer, motion parameters, but also to a large extent on the using parameters. Based on the analysis of the structure and working principl...
关键词：structural parameters using parameters UNIFORMITY mathematical model 
Research on Fast Transient Pulse Group Suppression Filter
《Modern Electronic Technology》2017年第1期13-15,共3页Pan Lv 
With the popularization of electronic products, the electromagnetic compatibility problem of electronic equipment is more and more prominent. The suppression of electric fast transient burst (EFT / B) generated by swi...
关键词：EFT / B FILTER PARASITIC parameters 
新型鲜叶滚筒分级机的研制与参数优化
《茶叶通讯》2019年第4期436-440,共5页高士伟 叶飞 滕靖 龚自明 桂安辉 张强 崔清梅 戴居会 梁金波 
国家现代农业(茶叶)产业技术体系建设专项(CARS-19);中央引导地方科技发展专项(2018ZYYD009);湖北省技术创新专项(2017ABA159);湖北省科技创新项目(2016-620-000-001-032)
采用新研制的滚筒分级机,以一芽一叶至一芽四叶的混合鲜叶为原料,先后优化了滚筒分级机的集叶区域,同时比较了不同形状(正方形、椭圆形和六边形)和不同面积(3.5~8.0 cm^2、4.5~10.0 cm^2和5.5~12.0 cm^2)的筛孔、不同倾角(4.5°、5.5°...
关键词：鲜叶 滚筒分级 目标芽叶 分级率 参数 
Effects of Heat Exchange Tube Structural Parameters on Performance of Vehicle Radiator
《Journal of Power and Energy Engineering》2020年第9期1-7,共7页Zeyan Liu Xilei Kong Xiaobiao Han Hui Liu Quanzhen Wang Zhenling Wang 
In order to improve the performance of vehicle radiators, a two-dimensional heat transfer steady-state model of the radiator was set up. The influence of the structural parameters (axial ratio) of the heat exchange tu...
关键词：Vehicle Radiator Heat Transfer Performance Heat Exchange Tube Structure Parameters Axial Ratio 
Study on Productivity Model of Herringbone-Like Laterals Wells and Optimization of Morphological Parameters Considering Threshold Pressure Gradient in Heavy Oil Reservoirs
《World Journal of Engineering and Technology》2019年第2期302-313,共12页Enhui Sun Jie Tan Dong Zhang Wei Wang Songru Mu 
Compared with conventional well, herringbone-like laterals wells can increase the area of oil release, and can reduce the number of wellhead slots of platforms,?and?also can greatly improve the development efficiency....
关键词：Threshold Pressure Gradient Herringbone-Like Laterals WELLS Heavy Oil RESERVOIRS PRODUCTIVITY Model Optimization of MORPHOLOGICAL Parameters 
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