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Yuri Gorshkov
Yuri Gorshkov

Analyze This(1999) ##VERIFIED##


Ozone prediction has become an important activity in many U.S. ozone nonattainment areas. In this study, we describe the ozone prediction program in the Atlanta metropolitan area and analyze the performance of this program during the 1999 ozone-forecasting season. From May to September, a team of 10 air quality regulators, meteorologists, and atmospheric scientists made a daily prediction of the next-day maximum 8-hr average ozone concentration. The daily forecast was made aided by two linear regression models, a 3-dimensional air quality model, and the no-skill ozone persistence model. The team's performance is compared with the numerical models using several numerical indicators. Our analysis indicated that (1) the team correctly predicted next-day peak ozone concentrations 84% of the time, (2) the two linear regression models had a better performance than a 3-dimensional air quality model, (3) persistence was a strong predictor of ozone concentrations with a performance of 78%, and (4) about half of the team's wrong predictions could be prevented with improved meteorological predictions.




Analyze This(1999)


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The DSMB votes to continue study, but decides Merck needs to develop a plan to analyze the study's cardiovascular results before the study ends. DSMB Chairman Michael Weinblatt and Merck statistician Deborah Shapiro draft a letter and send it to Merck's Alise Reicin (now vice president of Merck's clinical research).


This class action lawsuit was originally filed in federal court in 1994 after the ACLU of Illinois received hundreds of complaints from black and Hispanic motorists who believed that the Illinois State Police were singling them out for highway drug searches. The case is still in litigation, and in April 1999, the ACLU submitted to the court several analyses completed by a team of statistical experts who analyzed databases maintained by the Illinois State Police. The experts concluded that state troopers, especially those assigned to a drug interdiction program called "Operation Valkyrie," singled out Hispanic motorists for enforcement of the traffic code1:


The Presidential Memorandum accompanying EO 12898 emphasizes the importance of using the NEPA review processes to promote environmental justice. It directs Federal agencies to analyze the environmental effects, including human health, economic, and social effects, of their proposed actions on minority and low-income communities when required by NEPA.


EPA's Final Guidance for Consideration of Environmental Justice in Clean Air Act 309 Reviews was developed for EPA reviewers commenting on other Federal agencies' NEPA documents to help ensure that environmental effects on minority and low-income communities have been fully analyzed. For each stage of the EPA Section 309 review process, this guidance provides: 041b061a72


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