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  2. Passenger name record - Wikipedia

    en.wikipedia.org/wiki/Passenger_name_record

    A passenger name record (PNR) is a record in the database of a computer reservation system (CRS) that contains the itinerary for a passenger or a group of passengers travelling together. The concept of a PNR was first introduced by airlines that needed to exchange reservation information in case passengers required flights of multiple airlines ...

  3. ixigo - Wikipedia

    en.wikipedia.org/wiki/Ixigo

    ixigo (pronounced "ik-si-go") is an Indian online travel portal headquartered in Gurgaon.Launched in 2007, ixigo aggregates real-time travel information, prices and availability for flights, trains, buses, and hotels, and allows ticket booking through its associate websites and apps.

  4. Philippine National Railways - Wikipedia

    en.wikipedia.org/wiki/Philippine_National_Railways

    The Philippine National Railways (PNR) (Filipino: Pambansang Daambakal ng Pilipinas; Spanish: Ferrocarril Nacional de Filipinas) is a state-owned railway company in the Philippines which operates one commuter rail service between Laguna and Quezon, and local services between Sipocot, Naga and Legazpi in the Bicol Region. [5]

  5. Putnam model - Wikipedia

    en.wikipedia.org/wiki/Putnam_model

    While managing R&D projects for the Army and later at GE, Putnam noticed software staffing profiles followed the Rayleigh distribution. [2]Putnam used his observations about productivity levels to derive the software equation:

  6. Electron paramagnetic resonance - Wikipedia

    en.wikipedia.org/wiki/Electron_paramagnetic...

    Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscopy is a method for studying materials that have unpaired electrons.The basic concepts of EPR are analogous to those of nuclear magnetic resonance (NMR), but the spins excited are those of the electrons instead of the atomic nuclei.

  7. Terminal punctuation - Wikipedia

    en.wikipedia.org/wiki/Terminal_punctuation

    Terminal punctuation refers to the punctuation marks used to identify the end of a portion of text. Terminal punctuation marks are also referred to as end marks [1] and stops.