A Balanced Surface Parameterization Method and Its Application to Spline Fitting

2016 ◽  
Author(s):  
Xiaopeng Zheng ◽  
Na Lei ◽  
Xiaokang Yu ◽  
Wei Chen ◽  
Mengci Song ◽  
...  
Keyword(s):  
Parameterization Method ◽  
Surface Parameterization ◽  
Spline Fitting

A new surface parameterization method based on one-step inverse forming for isogeometric analysis-suited geometry

2012 ◽  
Vol 65 (9-12) ◽  
pp. 1215-1227 ◽  
Author(s):  
Xue-Feng Zhu ◽  
Ping Hu ◽  
Zheng-Dong Ma ◽  
Xiangkui Zhang ◽  
Weidong Li ◽  
...  
Keyword(s):  
Isogeometric Analysis ◽  
Parameterization Method ◽  
Surface Parameterization ◽  
One Step

scholarly journals A framework for quantifying hydrologic effects of soil structure across scales

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Sara Bonetti ◽  
Zhongwang Wei ◽  
Dani Or
Keyword(s):  
Soil Texture ◽  
Land Surface ◽  
Soil Structure ◽  
Pedotransfer Functions ◽  
Small Scale ◽  
Spatial Correlations ◽  
Surface Parameterization ◽  
Exchange Processes ◽  
Local Soil ◽  
Spatially Distributed

AbstractEarth system models use soil information to parameterize hard-to-measure soil hydraulic properties based on pedotransfer functions. However, current parameterizations rely on sample-scale information which often does not account for biologically-promoted soil structure and heterogeneities in natural landscapes, which may significantly alter infiltration-runoff and other exchange processes at larger scales. Here we propose a systematic framework to incorporate soil structure corrections into pedotransfer functions, informed by remote-sensing vegetation metrics and local soil texture, and use numerical simulations to investigate their effects on spatially distributed and areal averaged infiltration-runoff partitioning. We demonstrate that small scale soil structure features prominently alter the hydrologic response emerging at larger scales and that upscaled parameterizations must consider spatial correlations between vegetation and soil texture. The proposed framework allows the incorporation of hydrological effects of soil structure with appropriate scale considerations into contemporary pedotransfer functions used for land surface parameterization.

scholarly journals Optimization of Polymer Extrusion Die Based on Response Surface Method

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1043 ◽  
Author(s):  
Amin Razeghiyadaki ◽  
Dichuan Zhang ◽  
Dongming Wei ◽  
Asma Perveen
Keyword(s):  
Three Dimensional ◽  
Theoretical Work ◽  
Optimization Method ◽  
Extrusion Die ◽  
Surface Method ◽  
Spline Fitting ◽  
Die Profile ◽  
Response Optimization ◽  
Geometric Variables ◽  
Volume Method

A coupled surface response optimization method with a three-dimensional finite volume method is adopted in this study to identify five independent geometric variables of the die interior that provides a design with the lowest velocity variance at the exit of the coat-hanger extrusion die. Two of these five geometric variables represent the manifold dimension while the other three variables represent the die profile. In this method, B-spline fitting with four points was used to represent the die profile. A comparison of the optimized die obtained in our study and the die with a geometry derived by a previous theoretical work shows a 20.07% improvement in the velocity distribution at the exit of the die.

Structure-aligned guidance estimation in surface parameterization using eigenfunction-based cross field

2014 ◽  
Vol 76 (6) ◽  
pp. 691-705 ◽  
Author(s):  
Tao Liao ◽  
Guoliang Xu ◽  
Yongjie Jessica Zhang
Keyword(s):  
Surface Parameterization

Chromatic Confocal Displacement Measurment Based on Correlation Algorithm

2013 ◽  
Vol 446-447 ◽  
pp. 909-914
Author(s):  
Chun Hui Niu ◽  
Yong Lv
Keyword(s):  
Measurement System ◽  
Smoothing Spline ◽  
Peak Wavelength ◽  
Linear Fitting ◽  
Correlation Curve ◽  
Correlation Algorithm ◽  
Spline Fitting ◽  
Fitting Method ◽  
Spectrum Curve ◽  
Confocal Technique

Chromatic confocal technique application in displacement measurement is studied theoretically and experimentally. a set of refractive lenses are designed and a measurement system is established. Correlation fitting method is proposed to fit spectrum curve and find peak wavelength. Results with use of correlation fitting method are compared with Gaussian and smoothing spline fitting methods. It indicate that correlation fitting method have higher extracting accuracy of peak wavelength and smaller RMSE of linear fitting due to narrower and smoother correlation curve.

scholarly journals Cabauw Experimental Results from the Project for Intercomparison of Land-Surface Parameterization Schemes

1997 ◽  
Vol 10 (6) ◽  
pp. 1194-1215 ◽  
Author(s):  
T. H. Chen ◽  
A. Henderson-Sellers ◽  
P. C. D. Milly ◽  
A. J. Pitman ◽  
A. C. M. Beljaars ◽  
...  
Keyword(s):  
Land Surface ◽  
Experimental Results ◽  
Surface Parameterization ◽  
Parameterization Schemes
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