A simulation study of carbon storage with active reservoir management

2021 ◽  
Author(s):  
Chantsalmaa Dalkhaa ◽  
Tao Jiang ◽  
Matthew E. Burton‐Kelly ◽  
Mackenzie Scharenberg ◽  
Valerie Smith ◽  
...  
Keyword(s):  
Carbon Storage ◽  
Simulation Study ◽  
Reservoir Management

scholarly journals Carbon storage and nitrous oxide emissions of cropping systems in eastern Washington: A simulation study

2012 ◽  
Vol 67 (5) ◽  
pp. 365-377 ◽  
Author(s):  
C. Stockle ◽  
S. Higgins ◽  
A. Kemanian ◽  
R. Nelson ◽  
D. Huggins ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Carbon Storage ◽  
Simulation Study ◽  
Cropping Systems ◽  
Nitrous Oxide Emissions ◽  
Eastern Washington

Miscible Gas Injection: A Successful Experience Leading to Proper Reservoir Management Through Simulation Study (A Carbonate Case Study)

2010 ◽  
Author(s):  
saeed Sajedian ◽  
Valiahmad Sajjadian ◽  
Mohammad Roostaeian ◽  
Mohammadreza Ghafoori ◽  
Vahid Mahmoudian Ataa Mahmoudian Ataabadi
Keyword(s):  
Simulation Study ◽  
Gas Injection ◽  
Reservoir Management ◽  
Miscible Gas Injection

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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