61,984 articles
Post-quantum digital signature
A post-quantum digital signature, or post-quantum signature, is a signature scheme designed to stay unforgeable against attackers with large-scale quantum computers; NIST standardizes ML-DSA, SLH-DSA, and FN-DSA, replacing RSA and elliptic-curve signatures by 2035.
Post-silicon validation
Post-silicon validation is the process of detecting and fixing bugs in integrated circuits after manufacture, on physical silicon rather than simulation, a distinct and critical phase of design verification in the SoC era.
Post-tensioned concrete bridge
A post-tensioned concrete bridge is a concrete bridge whose superstructure is prestressed by steel tendons stressed with jacks after the concrete hardens, widely used in United States bridge building.
Post-tensioning
Post-tensioning is a method of prestressing concrete in which steel tendons are tensioned with jacks after the concrete has hardened, applying a permanent compression to it.
Post-Tensioning Institute
The Post-Tensioning Institute (PTI), founded in 1976 and based in Farmington Hills, Michigan, develops codes, specifications, and certification programs for post-tensioned concrete construction and co-wrote the ACI-PTI 320-25 building code.
Post-training quantization
Post-training quantization (PTQ) is a model-compression technique that converts trained neural network weights to lower bit-widths like INT8 without retraining, reducing model size and latency.
Post–World War II air-to-air combat losses
Post–World War II air-to-air combat losses are aircraft destroyed in fights between opposing aircraft since 1945, spanning Korea, Vietnam, the Indo-Pakistani wars, the Falklands, the Gulf, and Ukraine.
Postage stamp
A postage stamp, also called a postal stamp, is a small adhesive label on mail showing the sender prepaid carriage, first issued in Britain in 1840.
Postal code
A postal code is a series of letters or digits in a postal address that helps sort and deliver mail, used by around 130 countries.
Postal codes in Canada
Canadian postal codes are six-character alphanumeric codes in "ANA NAN" form assigned by Canada Post to every address, introduced in Ottawa in 1971 and nationwide by 1973.
Postal codes in Singapore
Postal codes in Singapore are six-digit numbers administered by SingPost, introduced in 1995 and 1996, where each code identifies a single delivery point such as a house or building.
Postal codes in Sri Lanka
Postal codes in Sri Lanka are five-digit numeric codes assigned by the Department of Posts to postal towns and delivery areas, introduced in 1997; Colombo 08 is 00800.
Postal codes in Vietnam
Postal codes in Vietnam (mã bưu chính) are five-digit codes for wards, communes, and postal service points, introduced 1 January 2018 and required on many shipping and customs forms.
Postal workers' unions
Postal workers' unions are trade unions representing postal service workers, including mail carriers, sorters, and counter clerks, organized as single national unions or separate craft unions.
Postal, Telegraph and Telephone International
The Postal, Telegraph and Telephone International, later renamed Communications International, was a world federation of postal and telecommunications trade unions from 1911 until it merged into UNI in 2000.
PostBus (Switzerland)
PostBus, known as PostAuto, CarPostal, or AutoPostale, is the Swiss national regional bus company, a subsidiary of Swiss Post operating about 1,000 routes since 1906.
Postcodes in the United Kingdom
Postcodes in the United Kingdom are alphanumeric codes created and maintained by Royal Mail, first trialed in Norwich in 1959 and complete nationwide since 1974.
PostCSS
PostCSS is a JavaScript framework for transforming CSS through plugins: it parses stylesheets into an abstract syntax tree that plugins modify, and it underlies tools like Autoprefixer, Stylelint, and cssnano.
Posted price
A posted price is the publicly declared dollar value an oil company stated it would accept for a barrel of crude, used mainly for calculating royalties and taxes.
Postes, Télégraphes et Téléphones
Postes, Télégraphes et Téléphones, or PTT, was the French state ministry operating postal, telegraph, and telephone services from 1878 until its dissolution on 1 January 1991.
PostgreSQL
PostgreSQL, also known as Postgres, is an open source object-relational database management system using SQL, descended from the 1986 POSTGRES project at the University of California, Berkeley.
PostgreSQL wire protocol
PostgreSQL wire protocol (Frontend/Backend Protocol): message-based client-server protocol over TCP/IP or Unix sockets, port 5432. Versions 2.0, 3.0 (7.4+), reserved 3.1, and 3.2 (PostgreSQL 18); simple and extended query sub-protocols.
Postmark
A postmark is a postal marking recording where and when mail was processed, often combined with the cancellation that defaces a stamp so it cannot be reused.
Postmates
Postmates was an American on-demand delivery company, founded in San Francisco in 2011, that used independent contractor couriers and was acquired by Uber in December 2020.
Postmodern architecture
Postmodern architecture, or architectural post-modernism, is a style emerging in the 1960s against modernism, prevalent between about 1975 and 1990, known for ornament, historical reference, and symbolism.
PostScript
PostScript, also called the PostScript language, is a stack-based programming language released by Adobe in 1984 that describes the appearance of text, shapes, and images on printed pages.
Pot Noodle
Pot Noodle is a British brand of instant hot snack: dried noodles in a pot, prepared with boiling water, launched in 1977 and now owned by Unilever.
Pot still
A pot still, also known as an alembic, is a batch distillation apparatus in which fermented liquid is boiled at once and condensed into spirit for malt whisky, Cognac, and rum.
Potable water reuse
Potable water reuse is the use of highly treated municipal wastewater as a drinking water source, either directly or after an environmental buffer such as an aquifer.
Potala Palace
The Potala Palace (布达拉宫), also known as Budala Palace, is a hilltop palace-fortress in Lhasa, Tibet, built on Marpo Ri and the winter residence of the Dalai Lamas until 1959.