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  2. Linux - Wikipedia

    en.wikipedia.org/wiki/Linux

    Linux (/ ˈ l ɪ n ʊ k s /, LIN-uuks) [11] is a generic name for a family of open-source Unix-like operating systems based on the Linux kernel, [12] an operating system kernel first released on September 17, 1991, by Linus Torvalds.

  3. Casualties of the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/Casualties_of_the...

    The September 11 attacks were the deadliest terrorist attacks in human history, causing the deaths of 2,996 people, including 2,977 victims and 19 hijackers who committed murder–suicide. Thousands [a] more were injured, [3][4] and long-term health effects have arisen as a consequence of the attacks. New York City took the brunt of the death ...

  4. Testing effect - Wikipedia

    en.wikipedia.org/wiki/Testing_effect

    The testing effect (also known as retrieval practice, active recall, practice testing, or test-enhanced learning) [1][2][3] suggests long-term memory is increased when part of the learning period is devoted to retrieving information from memory. [4] It is different from the more general practice effect, defined in the APA Dictionary of ...

  5. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet is a multi-national American company that provides tools for studying and learning. [ 1 ] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [ 2 ] and released to the public in January 2007. [ 3 ] Quizlet's primary products include digital flash cards, matching games, practice electronic ...

  6. Neurobiological effects of physical exercise - Wikipedia

    en.wikipedia.org/wiki/Neurobiological_effects_of...

    Neuroplasticity is the process by which neurons adapt to a disturbance over time, and most often occurs in response to repeated exposure to stimuli. [27] Aerobic exercise increases the production of neurotrophic factors [note 1] (e.g., BDNF, IGF-1, VEGF) which mediate improvements in cognitive functions and various forms of memory by promoting blood vessel formation in the brain, adult ...

  7. Autoeroticism - Wikipedia

    en.wikipedia.org/wiki/Autoeroticism

    Masturbation is the most popular autoerotic practice. There are many techniques used to masturbate, like manual stimulation or using everyday objects. For some people, sex toys such as dildos, vibrators, masturbators, anal beads and Sybian machines can be helpful for this form of autoeroticism.

  8. Goldwater rule - Wikipedia

    en.wikipedia.org/wiki/Goldwater_rule

    Goldwater rule. The original piece in Fact magazine which prompted the introduction of the Goldwater rule. Likely costing Barry Goldwater a large number of potential votes, this practice was later deemed unethical by the APA. The Goldwater rule is Section 7 in the American Psychiatric Association 's (APA) Principles of Medical Ethics, [1] which ...

  9. Pregnancy from rape - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_from_rape

    [9] [10] Recent estimates suggest that rape conception happens between 25,000 and 32,000 times each year in the U.S. In a 1996 three-year longitudinal study of more than 4,000 American women, physician Melisa Holmes estimated from data from her study that forced sexual intercourse causes over 32,000 pregnancies in the United States each year ...