The adsorption of oleate on powellite and fluorapatite: A joint experimental and theoretical simulation study

2017 ◽  
Vol 409 ◽  
pp. 65-70 ◽  
Author(s):  
Wang Zhen
Keyword(s):  
Simulation Study ◽  
Theoretical Simulation

Surface behavior of a model surfactant: A theoretical simulation study

2010 ◽  
Vol 348 (1) ◽  
pp. 159-166 ◽  
Author(s):  
Shi-Ming Yuan ◽  
Hui Yan ◽  
Kai Lv ◽  
Cheng-Bu Liu ◽  
Shi-Ling Yuan
Keyword(s):  
Simulation Study ◽  
Theoretical Simulation ◽  
Surface Behavior

Adsorption and interaction of CO2 on rutile TiO2(110) surfaces: a combined UHV-FTIRS and theoretical simulation study

2015 ◽  
Vol 17 (37) ◽  
pp. 23994-24000 ◽  
Author(s):  
Yunjun Cao ◽  
Shujun Hu ◽  
Min Yu ◽  
Shishen Yan ◽  
Mingchun Xu
Keyword(s):  
Simulation Study ◽  
Rutile Tio2 ◽  
Theoretical Simulation ◽  
Incidence Plane ◽  
Adsorption Temperature

P-polarized RAIR spectra of CO2 adsorbed on reduced rutile TiO2(110) surfaces as a function of CO2 dosage and adsorption temperature. The incidence plane is along (a) the [001] azimuth and (b) the [11̄0] azimuth respectively.

Effects of Surface Roughness on Multi-Station Mechanical Alignment Processes

2000 ◽  
Vol 123 (3) ◽  
pp. 433-444 ◽  
Author(s):  
Neville K. S. Lee ◽  
J. Y. Chen ◽  
Ajay Joneja
Keyword(s):  
Surface Roughness ◽  
Simulation Study ◽  
Manufacturing Processes ◽  
Mechanical Alignment ◽  
Theoretical Simulation ◽  
Geometric Consideration ◽  
Alignment System ◽  
The Difference

A theoretical simulation study was performed to study how surface roughness of the workpiece and datum can affect the locating precision of multiple station manufacturing processes using a mechanical alignment system. Our analysis shows that geometric consideration, a factor that has not been treated before, is extremely important for many multi-station applications. As expected, the level of alignment precision decreases when the level of surface roughness of the workpieces increases. Our analysis also shows that the effect of the sample roughness on the level of alignment precision depends heavily on the difference in the relative positions of the datum between different workstations.

An Alternative to Cohen's κ

2006 ◽  
Vol 11 (1) ◽  
pp. 12-24 ◽  
Author(s):  
Alexander von Eye
Keyword(s):  
Simulation Study ◽  
Null Hypothesis ◽  
Categorical Variables ◽  
Alternative Measure ◽  
Rater Agreement ◽  
Verbal Processing ◽  
Heavy Tailed ◽  
Applicant Selection

At the level of manifest categorical variables, a large number of coefficients and models for the examination of rater agreement has been proposed and used. The most popular of these is Cohen's κ. In this article, a new coefficient, κ s , is proposed as an alternative measure of rater agreement. Both κ and κ s allow researchers to determine whether agreement in groups of two or more raters is significantly beyond chance. Stouffer's z is used to test the null hypothesis that κ s = 0. The coefficient κ s allows one, in addition to evaluating rater agreement in a fashion parallel to κ, to (1) examine subsets of cells in agreement tables, (2) examine cells that indicate disagreement, (3) consider alternative chance models, (4) take covariates into account, and (5) compare independent samples. Results from a simulation study are reported, which suggest that (a) the four measures of rater agreement, Cohen's κ, Brennan and Prediger's κ n , raw agreement, and κ s are sensitive to the same data characteristics when evaluating rater agreement and (b) both the z-statistic for Cohen's κ and Stouffer's z for κ s are unimodally and symmetrically distributed, but slightly heavy-tailed. Examples use data from verbal processing and applicant selection.

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