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Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [ 4 ] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users.
Qualys, Inc. is an American technology firm based in Foster City, California, specializing in cloud security, compliance and related services. [ 3 ] Qualys has over 10,300 customers in more than 130 countries.
For example, 1 year of life lived in a situation with utility 0.5 yields 0.5 QALYs—a person experiencing this state is getting only 50% of the possible value of that year. In other words, they value the experience of being in less than perfect health for a full year as much as they value living for half a year in perfect health (0.5 years × ...
The book tells the story of Sarah Churchill (daughter of Winston Churchill), Anna Roosevelt (daughter of Franklin Delano Roosevelt), and Kathleen Harriman (daughter of W. Averell Harriman) — all of whom accompanied their fathers to the Yalta Conference, where they had roles that were unofficial but nonetheless important.
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 February 2025. Family of Unix-like operating systems This article is about the family of operating systems. For the kernel, see Linux kernel. For other uses, see Linux (disambiguation). Operating system Linux Tux the penguin, the mascot of Linux Developer Community contributors, Linus Torvalds Written ...
This book is an accessible introduction to IRT, aimed, as the title says, at psychologists. Baker, Frank (2001). The Basics of Item Response Theory. ERIC Clearinghouse on Assessment and Evaluation, University of Maryland, College Park, MD. This introductory book is by one of the pioneers in the field. Baker, Frank B.; Kim, Seock-Ho (2004).