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  2. Railway signals in Germany - Wikipedia

    en.wikipedia.org/wiki/Railway_signals_in_Germany

    Third arms were removed; in 1948, the green light of the lower arm was changed to yellow. This system is still in use today. There were also distant signals (German: Vorsignale) to advise the driver as to what aspect the next main signal showed, so that they could slow or stop their train in time if necessary.

  3. General Schedule (US civil service pay scale) - Wikipedia

    en.wikipedia.org/wiki/General_Schedule_(US_civil...

    The General Schedule ( GS) is the predominant pay scale within the United States civil service. The GS includes the majority of white collar personnel (professional, technical, administrative, and clerical) positions. As of September 2004, 71 percent of federal civilian employees were paid under the GS.

  4. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    Orders of magnitude (time) An order of magnitude of time is usually a decimal prefix or decimal order-of-magnitude quantity together with a base unit of time, like a microsecond or a million years. In some cases, the order of magnitude may be implied (usually 1), like a "second" or "year". In other cases, the quantity name implies the base unit ...

  5. List of tz database time zones - Wikipedia

    en.wikipedia.org/wiki/List_of_tz_database_time_zones

    Time Zone abbreviations. Time zone abbreviations for both Standard Time and Daylight Saving Time are shown exactly as they appear in the database. See strftime and its "%Z" field. Some of zone records use 3 or 4 letter abbreviations that are tied to physical time zones, others use numeric UTC offsets. List

  6. Standard score - Wikipedia

    en.wikipedia.org/wiki/Standard_score

    Standard score. In statistics, the standard score is the number of standard deviations by which the value of a raw score (i.e., an observed value or data point) is above or below the mean value of what is being observed or measured. Raw scores above the mean have positive standard scores, while those below the mean have negative standard scores.

  7. Handkerchief code - Wikipedia

    en.wikipedia.org/wiki/Handkerchief_code

    The handkerchief code (also known as the hanky code, the bandana code, and flagging) is a system of color-coded cloth handkerchief or bandanas for non-verbally communicating one's interests in sexual activities and fetishes. The color of the handkerchief identifies a particular activity, and the pocket it is worn in (left or right) identifies ...

  8. IEC 60269 - Wikipedia

    en.wikipedia.org/wiki/IEC_60269

    IEC 60269 unifies the electrical characteristics of fuses that are dimensionally interchangeable with fuses built to earlier British, German, French or Italian standards. [2] The standard identifies application categories which classify the time-current characteristic of each type of fuse. The application category is a two-digit code.

  9. ZS Associates - Wikipedia

    en.wikipedia.org/wiki/ZS_Associates

    www.zs.com. ZS Associates is a management consulting and professional services firm focusing on consulting, software, and technology, headquartered in Evanston, Illinois that provides services for clients in healthcare, private equity, and technology. The firm was founded in 1983 by two professors at Northwestern University who developed sales ...