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  2. Physically based rendering - Wikipedia

    en.wikipedia.org/wiki/Physically_based_rendering

    A diamond plate texture rendered close-up using physically based rendering principles. Microfacet abrasions cover the material, giving it a rough, realistic look even though the material is a metal. Specular highlights are high and realistically modeled at the appropriate edge of the tread using a normal map.

  3. Performance-based regulation - Wikipedia

    en.wikipedia.org/wiki/Performance-based_regulation

    Performance-based regulation (PBR) is an approach to utility regulation designed to strengthen utility performance incentives. Thus defined, the term PBR is synonymous with incentive regulation. The two most common forms of PBR are award-penalty mechanisms (“APMs”) and multiyear rate plans (“MRPs”).

  4. PBR - Wikipedia

    en.wikipedia.org/wiki/PBR

    Payment by Results; Performance-based regulation of utilities; Petrobras (NYSE stock ticker code PBR), Brazilian oil company; Plant breeders' rights over new varieties; Pre-Budget Report, one of the two economic forecasts that HM Treasury is required to deliver to the UK Parliament each year

  5. S3 Texture Compression - Wikipedia

    en.wikipedia.org/wiki/S3_Texture_Compression

    All convert a 4×4 block of pixels to a 64-bit or 128-bit quantity, resulting in compression ratios of 6:1 with 24-bit RGB input data or 4:1 with 32-bit RGBA input data. S3TC is a lossy compression algorithm, resulting in image quality degradation, an effect which is minimized by the ability to increase texture resolutions while maintaining the ...

  6. Phosphorus tribromide - Wikipedia

    en.wikipedia.org/wiki/Phosphorus_tribromide

    PBr 3 is prepared by treating red phosphorus with bromine. An excess of phosphorus is used in order to prevent formation of PBr 5: [1] [2] P 4 + 6 Br 2 → 4 PBr 3. Because the reaction is highly exothermic, it is often conducted in the presence of a diluent such as PBr 3. Phosphorus tribromide is also generated in situ from red phosphorus and ...

  7. Fabric structure - Wikipedia

    en.wikipedia.org/wiki/Fabric_structure

    A laminated fabric usually is composed of a reinforcing polyester scrim pressed between two layers of unsupported PVC film. For most fabric structure uses, however, it refers to two or more layers of fabric or film joined by heat, pressure, and an adhesive to form a single ply.

  8. pBR322 - Wikipedia

    en.wikipedia.org/wiki/PBR322

    pBR322 is 4361 base pairs in length [1] and has two antibiotic resistance genes – the gene bla encoding the ampicillin resistance (Amp R) protein, and the gene tetA encoding the tetracycline resistance (Tet R) protein. It contains the origin of replication of pMB1, and the rop gene, which encodes a restrictor of plasmid copy number.

  9. Protocol-Independent Multicast - Wikipedia

    en.wikipedia.org/wiki/Protocol-Independent_Multicast

    In older Cisco IOS releases, PIM-DM would re-flood all the multicast traffic every 3 minutes. This is fine for low volume multicast, but not higher bandwidth multicast packet streams. More recent Cisco IOS versions support a new feature called PIM Dense Mode State Refresh, since 12.1(5)T.