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  2. Paper size - Wikipedia

    en.wikipedia.org/wiki/Paper_size

    DIN 5008 (previously DIN 676) prescribes, among many other things, two variants, A and B, for the location of the address field on the first page of a business letter and how to fold the A4 sheet accordingly, so the only part visible of the main content is the subject line.

  3. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF. PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2.

  4. Fold change - Wikipedia

    en.wikipedia.org/wiki/Fold_change

    It is defined as the ratio between the two quantities; for quantities A and B the fold change of B with respect to A is B/A. In other words, a change from 30 to 60 is defined as a fold-change of 2. This is also referred to as a "one fold increase". Similarly, a change from 30 to 15 is referred to as a "0.5-fold decrease".

  5. Template:COVID-19 pandemic data - Wikipedia

    en.wikipedia.org/wiki/Template:COVID-19_pandemic...

    Download as PDF; Printable version; In other projects ... 14 Greenland: 11,971 21 Yemen: ... To float this template or adjust the font size, ...

  6. Rotation matrix - Wikipedia

    en.wikipedia.org/wiki/Rotation_matrix

    If we condense the skew entries into a vector, (x,y,z), then we produce a 90° rotation around the x-axis for (1, 0, 0), around the y-axis for (0, 1, 0), and around the z-axis for (0, 0, 1). The 180° rotations are just out of reach; for, in the limit as x → ∞ , ( x , 0, 0) does approach a 180° rotation around the x axis, and similarly for ...

  7. List of countries with highest military expenditures - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_with...

    The first list is based on the Stockholm International Peace Research Institute (SIPRI) fact sheet, which includes a list of the world's top 40 military spenders as of 2023, based on current market exchange rates.

  8. 2024 CrowdStrike-related IT outages - Wikipedia

    en.wikipedia.org/wiki/2024_CrowdStrike-related...

    On 19 July at 04:09 UTC, CrowdStrike distributed a faulty configuration update for its Falcon sensor software running on Windows PCs and servers. A modification to a configuration file which was responsible for screening named pipes, Channel File 291, caused an out-of-bounds memory read [14] in the Windows sensor client that resulted in an invalid page fault.

  9. Samsung Galaxy S9 - Wikipedia

    en.wikipedia.org/wiki/Samsung_Galaxy_S9

    [14] [9] The first two frame rates are the first increase in the series since the 2014 Samsung Galaxy S5. AR Emoji, similar to Apple's Animoji feature on the iPhone X, is a new feature that lets the user make emojis based on themselves with the help of augmented reality face recognition. [15] Third-party app support is provided for this feature.