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Printing press
A printing press is a machine that presses an inked surface of movable type or a plate against paper to make many copies of the same image.
Prioritized planning
Prioritized planning (PP) is a fast, widely used algorithm family for multi-agent path finding in which agents plan collision-free paths one at a time in a fixed priority order.
Priority ceiling protocol
The priority ceiling protocol is a resource-sharing protocol for real-time systems that assigns each shared resource the highest priority of any task that may lock it, preventing deadlock and bounding blocking to one critical section.
Priority inheritance
Priority inheritance is a scheduling protocol in which a low-priority lock owner temporarily assumes the priority of the highest-priority blocked task, bounding priority inversion in real-time systems.
Priority inversion
Priority inversion is a scheduling anomaly where a low-priority task holding a needed lock delays a high-priority task, causing missed deadlines in real-time systems like Mars Pathfinder.
Priority queue
A priority queue is an abstract data type that stores items each with a priority and efficiently removes the highest-priority item, usually implemented as a binary heap and used in Dijkstra's algorithm and scheduling.
Prirazlomnoye Oil Field
Prirazlomnoye is an offshore oil field on the Pechora Sea shelf in the Russian Arctic, discovered in 1989 and producing since December 2013 from the ice-resistant platform Prirazlomnaya.
Priroda
Priroda (Природа, "Nature") was the last permanent research module of the Russian Mir space station, launched in 1996 for Earth remote sensing and carrying experiments from twelve nations.
PRISM
PRISM, also known as the PRISM program, is an NSA signals-intelligence program under Section 702 of FISA, disclosed in 2013 through documents leaked by Edward Snowden.
Prismatic cell
A prismatic cell is a lithium-ion battery cell in a flat, rectangular rigid housing, a format whose efficient stacking makes it the most widely used in electric vehicle and stationary storage batteries.
Prison architecture
Prison architecture is the design of buildings and grounds for holding people deprived of liberty, historically shaped by Bentham's Panopticon and now by dignity, light, and human rights standards.
Prithvi (पृथ्वी) (missile)
Prithvi (पृथ्वी, "Earth") is a family of Indian short-range ballistic missiles developed by DRDO, first tested in 1988 and used by the Army, Air Force, and Navy.
Pritzker Architecture Prize
The Pritzker Architecture Prize is an annual international award honoring a living architect's body of built work, founded in 1979 by the Pritzker family through their Hyatt Foundation and often called architecture's Nobel.
Privacera
Privacera is a data security and governance company founded in 2016 in Fremont, California, by Apache Ranger creators Balaji Ganesan and Don Bosco Durai, offering multi-cloud access governance and AI governance (PAIG, Trust3 AI).
Privacy amplification
Privacy amplification is a technique that strengthens a weak privacy guarantee by randomizing how inputs or outputs reach an adversary, in cryptography and differential privacy.
Privacy by Design
Privacy by Design is a framework, developed by Ann Cavoukian in the 1990s, that embeds privacy protection into technology and business practices from the start of design.
Privacy CA
A Privacy CA (Privacy-CA) is a trusted third party in the Trusted Computing Group architecture that issues credentials for attestation identity keys in TPM platforms.
Privacy concerns with Google
Privacy concerns with Google center on the breadth of data the company collects across Search, Chrome, Android, Gmail, Maps, and YouTube, and the advertising business that data supports.
Privacy concerns with social networking services
Privacy concerns with social networking services, also called social networking privacy, center on platforms' mass collection and monetization of personal data, including Facebook's record $5 billion FTC penalty in 2019.
Privacy law
Privacy law is the body of law governing how personal data about identifiable people is collected, used, and shared, including the EU's GDPR and California's CCPA.
Privacy policy
A privacy policy, also called a privacy notice, is a legal statement disclosing how an organization collects, uses, stores, shares, and protects personal information, and what rights users have.
Privacy Shield
The EU-U.S. Privacy Shield was a framework for transferring personal data from the European Union to the United States, adopted in 2016 and invalidated in 2020.
Privacy-preserving record linkage
Privacy-preserving record linkage (PPRL) matches records of the same entity across organizations' databases while encrypting identifiers such as names and addresses, most often using Bloom filters, and is widely used in medical settings like cancer registries.
Private branch exchange
A private branch exchange (PBX) is a private telephone switching system that routes calls within an organization, first installed in 1882 and now available as IP-based or hosted cloud services.
Private browsing
Private browsing, also known as incognito mode, is a web browser mode that discards history, cookies, and temporary files on close; it does not make users anonymous online.
Private Cloud Compute
Private Cloud Compute is Apple's 2024 architecture for cloud AI inference on servers a device can cryptographically verify, so personal data is inaccessible even to Apple.
Private network
A private network, using private IP address space, is a network whose hosts communicate directly and reach outside networks only through gateways, as defined by RFC 1918 in 1996.
Private Network-to-Network Interface
Private Network-to-Network Interface (PNNI) is the ATM Forum protocol suite for routing and signaling between private ATM switches, combining hierarchical link-state routing with UNI-based signaling to establish connections.
Private pilot licence
A private pilot license, in the United States a private pilot certificate, allows the holder to fly an aircraft as pilot in command for private, non-commercial flights.
Private PKI
A private PKI is an internal certificate authority system an organization operates to issue and manage X.509 certificates for its own users, devices, and services rather than the public internet.