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  2. Del in cylindrical and spherical coordinates - Wikipedia

    en.wikipedia.org/wiki/Del_in_cylindrical_and...

    This article uses the standard notation ISO 80000-2, which supersedes ISO 31-11, for spherical coordinates (other sources may reverse the definitions of θ and φ): . The polar angle is denoted by [,]: it is the angle between the z-axis and the radial vector connecting the origin to the point in question.

  3. Casualties of the September 11 attacks - Wikipedia

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

    Most tall buildings in the United States at the time were not designed for complete evacuation during a crisis, even after the 1993 World Trade Center bombing.It was also procedural for announcements in the case of high-rise fire safety for individuals to remain in their offices unless they were near the burning floor. [25]

  4. Delta Air Lines Flight 191 - Wikipedia

    en.wikipedia.org/wiki/Delta_Air_Lines_Flight_191

    Call sign: DELTA 191: Registration: N726DA: ... Delta Air Lines Flight 191 was a regularly scheduled Delta Air Lines domestic service from Fort Lauderdale, Florida, ...

  5. Delta (situational awareness system) - Wikipedia

    en.wikipedia.org/wiki/Delta_(situational...

    Delta is a situational awareness [1] and battlefield management system developed and used in Ukraine. The system integrates information from a broad network of participants, including troops, civilian officials, and vetted bystanders; [2] and a wide range of streams, [1] including sensors, intelligence sources, surveillance satellites and drones, [2] especially geolocated data, which it maps ...

  6. .com - Wikipedia

    en.wikipedia.org/wiki/.com

    The domain com is a top-level domain (TLD) in the Domain Name System (DNS) of the Internet.Created in the first group of Internet domains at the beginning of 1985, its name is derived from the word commercial, [1] indicating its original intended purpose for subdomains registered by commercial organizations.

  7. The Deliverance (film) - Wikipedia

    en.wikipedia.org/wiki/The_Deliverance_(film)

    The Deliverance is a 2024 American supernatural horror film directed by Lee Daniels and written by David Coggeshall, and Elijah Bynum. Inspired by the Ammons haunting case, [1] it stars Andra Day with Rob Morgan, Caleb McLaughlin, Aunjanue Ellis-Taylor, Tasha Smith, Omar Epps, Mo'Nique, and Glenn Close.

  8. Delta method - Wikipedia

    en.wikipedia.org/wiki/Delta_method

    In statistics, the delta method is a method of deriving the asymptotic distribution of a random variable. It is applicable when the random variable being considered can be defined as a differentiable function of a random variable which is asymptotically Gaussian .

  9. List of villages in Delta State - Wikipedia

    en.wikipedia.org/wiki/List_of_villages_in_Delta...

    This is a list of villages and settlements in Delta State, Nigeria arranged by Local Government Area (L.G.A) and district/area (with postal codes also given). [1] [2] Delta state is the big heart of the nation.