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  2. Prehn's sign - Wikipedia

    en.wikipedia.org/wiki/Prehn's_sign

    According to Prehn's sign, the physical lifting of the testicles relieves the pain of epididymitis but not pain caused by testicular torsion. [ 4 ] Negative Prehn's sign indicates no pain relief with lifting the affected testicle, which points towards testicular torsion which is a surgical emergency and must be relieved within 6 hours.

  3. Psychological effects of Internet use - Wikipedia

    en.wikipedia.org/wiki/Psychological_effects_of...

    However, when the Internet is used as a social medium (either online gaming or social networking sites) there is a positive correlation between the use of the Internet and family conflicts. In conjunction with using the Internet for social means, there is a risk of exposing familial information to strangers, which is perceived to parents as a ...

  4. Brainly - Wikipedia

    en.wikipedia.org/wiki/Brainly

    Brainly is an education company based in Kraków, Poland, with headquarters in New York City.It is an AI-powered homework help platform targeting students and parents. As of November 2020, Brainly reported having 15 million daily active users, making it the world's most popular education app. [2] In 2024, FlexOS reported Brainly as the #1 Generative AI Tool in the education category and the #6 ...

  5. False positives and false negatives - Wikipedia

    en.wikipedia.org/wiki/False_positives_and_false...

    The false positive rate (FPR) is the proportion of all negatives that still yield positive test outcomes, i.e., the conditional probability of a positive test result given an event that was not present.

  6. Internet - Wikipedia

    en.wikipedia.org/wiki/Internet

    The Internet (or internet) [a] is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) [b] to communicate between networks and devices. It is a network of networks that consists of private , public, academic, business, and government networks of local to global scope, linked by a broad array of ...

  7. Positive and negative predictive values - Wikipedia

    en.wikipedia.org/wiki/Positive_and_negative...

    The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.

  8. Phren - Wikipedia

    en.wikipedia.org/wiki/Phren

    Phren, however, is not exclusively applied to humans. In Empedocles' system, Phren is a general psychological agent to which moral blame and praise can be extended, [4] that darts through the universe as effluences, steers and controls the cosmos in the process and is the measure of what is harmonious and what is fit to exist. [5]

  9. List of countries by number of Internet users - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Below is a sortable list of countries by number of Internet users as of 2024. Internet users are defined as persons who accessed the Internet in the last 12 months from any device, including mobile phones. [Note 1] Percentage is the percentage of a country's population that are Internet users. Estimates are derived either from household surveys ...