OSI Reference Model: (Open Systems Interconnect) A network communications software standard that consists of a seven layer structure of specified protocol and services.

 

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OSI Reference Model: (Open Systems Interconnect) A network communications software standard that consists of a seven layer structure of specified protocol and services.

Pie Model Of Capital Structure: A model of the debt-equity ratio of the firms, graphically depicted in slices of a pie that represent the value of the firm in the capital markets.

Physiologically Based Pharmacokinetic Model (PBPK Model): A computer model that describes what happens to a chemical in the body. This model describes how the chemical gets into the body, where it goes in the body, how it is changed by the body, an . . . View Full Definition

Phagocytosis: A form of endocytosis in which white blood cells surround and engulf invading bacteria or viruses.

Pin Position: (also 'pin placement') the exact location of the hole and flagstick

Placer Deposit: A mass of stream sediment that contains an economically significant concentration of mineral particles. This accumulation of mineral particles is a result of their being of high specific gra . . . View Full Definition

Porosity: The volume of pore space in a rock, sediment or soil. Usually expressed as a percentage. This pore space can include openings between grains, fracture openings and caverns.

Plosive: In linguistics, another term for a stop.

Plan Position Indicator (PPI): The face or screen of a cathode-ray tube on which radar images appear in correct relation to each other, so that the scope face presents a chart like representation of the area about the ant . . . View Full Definition

Plan Position Indicator: Also known as a PPI Scope, it is a radar indicator scope displaying range and azimuth of targets in polar coordinates.