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The impact of short-term exposure to ambient air pollution on test scores in Iran
, Article Population and Environment ; Volume 41, Issue 3 , 2020 , Pages 253-285 ; Vesal, M ; Fatemi Ardestani, S.F ; Sharif University of Technology
Springer
2020
Abstract
Air pollution in urban centers has become a key public concern around the world. Apart from its adverse health effects, air pollution could impact less visible outcomes like cognitive performance. Standardized tests are a fixture of all education settings that are susceptible to pollution shocks because they require high cognitive function. Given that test scores are widely used as signals by parents, employers, and education institutions, pollution shocks could render tests unfair and unreliable. In this paper, we combine pollution data with test scores from a large testing institution in Iran between 2012 and 2017 to quantify the impact of short-term exposure to air pollution on test...
New approaches in monitoring multivariate categorical processes based on contingency tables in phase II
, Article Quality and Reliability Engineering International ; 2016 ; 07488017 (ISSN) ; Amiri, A ; Niaki, S. T. A ; Sharif University of Technology
John Wiley and Sons Ltd
2016
Abstract
In some statistical process control (SPC) applications, quality of a process or product is characterized by contingency table. Contingency tables describe the relation between two or more categorical quality characteristics. In this paper, two new control charts based on the WALD and Stuart score test statistics are designed for monitoring of contingency table-based processes in Phase-II. The performances of the proposed control charts are compared with the generalized linear test (GLT) control chart proposed in the literature. The results show the better performance of the proposed control charts under small and moderate shifts. Moreover, new schemes are proposed to diagnose which cell...
New approaches in monitoring multivariate categorical processes based on contingency tables in phase II
, Article Quality and Reliability Engineering International ; Volume 33, Issue 5 , 2017 , Pages 1105-1129 ; 07488017 (ISSN) ; Amiri, A ; Akhavan Niaki, S. T ; Sharif University of Technology
Abstract
In some statistical process control (SPC) applications, quality of a process or product is characterized by contingency table. Contingency tables describe the relation between two or more categorical quality characteristics. In this paper, two new control charts based on the WALD and Stuart score test statistics are designed for monitoring of contingency table-based processes in Phase-II. The performances of the proposed control charts are compared with the generalized linear test (GLT) control chart proposed in the literature. The results show the better performance of the proposed control charts under small and moderate shifts. Moreover, new schemes are proposed to diagnose which cell...