61,984 articles
Hybrid encryption
Hybrid encryption encrypts a message with a fast symmetric cipher under a fresh random key, protecting that key with the recipient's public key, as in HPKE.
Hybrid force/position control
Hybrid force/position control is a robot control scheme that controls position in some task directions and contact force in others, introduced by Matthew T. Mason in 1981.
Hybrid heat pump
A hybrid heat pump (HHP) is a heating system pairing an electric heat pump with a gas or oil boiler that covers peak demand and very cold conditions.
Hybrid HVDC breaker
A hybrid HVDC breaker is a high-voltage direct current circuit breaker combining a mechanical switch with power electronics to clear DC faults in milliseconds with low losses.
Hybrid III
The Hybrid III is a family of crash test dummies developed by General Motors in the 1970s to measure occupant injury responses in frontal vehicle crashes.
Hybrid kernel
A hybrid kernel is an operating system kernel architecture that combines monolithic and microkernel features, exemplified by Microsoft's Windows NT kernel and Apple's XNU in macOS and iOS.
Hybrid laser-arc welding
Hybrid laser-arc welding (LAHW) is a joining process in which a laser and an electric arc act in one weld pool, combining deep penetration with gap tolerance.
Hybrid log–gamma
Hybrid log–gamma (HLG), standardized as ARIB STD-B67, is an HDR television transfer function developed jointly by NHK and the BBC, combining gamma and logarithmic curves.
Hybrid Memory Cube
The Hybrid Memory Cube (HMC) is a three-dimensional stacked DRAM device developed by Micron Technology, announced with IBM in 2011, used in Fujitsu supercomputers, and discontinued in 2018.
Hybrid model predictive control
Hybrid model predictive control (HMPC) applies model predictive control to hybrid systems that mix continuous dynamics with discrete events such as switches, mode changes, and contact, and is used in legged robots and process industries.
Hybrid rail
Hybrid rail describes railway vehicles combining two or more power sources, usually a diesel generator and rechargeable battery, feeding electric traction motors to save fuel.
Hybrid Raman/EDFA amplification
Hybrid Raman/EDFA amplification is an optical amplification scheme that combines a distributed Raman amplifier with an erbium-doped fiber amplifier, improving receiver sensitivity by roughly 7 dB.
Hybrid recommender system
A hybrid recommender system is a recommender that combines multiple recommendation techniques to produce its output, most often mixing collaborative filtering with content-based methods to overcome cold-start problems.
Hybrid routing
Hybrid routing is a class of routing techniques in computer networks that combines distance-vector and link-state, or proactive and reactive, mechanisms, exemplified by EIGRP and the Zone Routing Protocol (ZRP).
Hybrid ROV/AUV
A hybrid ROV/AUV, also called an HROV or HAUV, is an uncrewed underwater vehicle combining ROV and AUV capabilities, surveying freely then switching to tethered operation.
Hybrid search
Hybrid search is an information retrieval technique that runs keyword and vector queries against the same index and merges their results into a single ranking.
Hybrid Synergy Drive
Hybrid Synergy Drive (HSD) is Toyota's full hybrid powertrain, pairing a gasoline engine with two electric motor-generators through a planetary gear set; it debuted in the 1997 Prius.
Hybrid testing (structural engineering)
Hybrid testing, or hybrid test, is a structural engineering method in which part of a structure is tested physically with hydraulic actuators while the rest is simulated numerically to reproduce its seismic response.
Hybrid transactional/analytical processing
Hybrid transactional/analytical processing (HTAP), also called hybrid OLTP & OLAP or translytical, is a database architecture, named by Gartner in 2014, that runs transactions and real-time analytics on the same data without ETL, balancing freshness against performance isolation.
Hybrid vehicle
A hybrid vehicle is a road vehicle powered by an internal combustion engine plus electric motors and a battery, improving fuel economy over conventional cars.
Hybrid vehicle drivetrain
A hybrid vehicle drivetrain, or hybrid powertrain, combines two power sources, typically an engine or fuel cell with a rechargeable battery, so each operates where it is efficient.
Hybrid visual servoing
Hybrid visual servoing, also called 2.5-D visual servoing, is a robot control method combining 3-D Cartesian and 2-D image feedback, proposed by Ezio Malis in 1999.
Hybrid wireless mesh protocol
The Hybrid Wireless Mesh Protocol (HWMP) is the mandatory default routing protocol of the IEEE 802.11s Wi-Fi mesh standard, combining reactive on-demand and proactive tree-based path selection.
Hybrid zero dynamics
Hybrid zero dynamics (HZD) is a control framework for legged robots that generates stable walking and running gaits through virtual constraints, formalized by Westervelt, Grizzle, and Koditschek in 2003.
Hybrid-pi model
The hybrid-pi model is a linearized small-signal equivalent circuit used to analyze bipolar junction transistors around a DC operating point, and is also applied to MOSFETs.
Hybrid-propellant rocket
The hybrid-propellant rocket, or hybrid rocket motor, is a chemical rocket combining a solid fuel with a separately stored liquid or gaseous oxidizer, allowing throttling and shutdown by controlling oxidizer flow.
HYBRIT
HYBRIT (Hydrogen Breakthrough Ironmaking Technology) is a Swedish initiative, launched in 2016 by SSAB, LKAB, and Vattenfall, that replaces coking coal with fossil-free hydrogen to make iron and steel.
Hycroft Mining Holding Corporation
Hycroft Mining Holding Corporation, formerly the SPAC Mudrick Capital Acquisition Corporation, is a US gold and silver exploration company that owns the Hycroft Mine in northern Nevada.
Hyderabad Metro (హైదరాబాద్ మెట్రో)
Hyderabad Metro, also known as Hyderabad Metro Rail (హైదరాబాద్ మెట్రో), is a rapid transit system serving Hyderabad, India, with 69.2 km of elevated track and 57 stations.
Hyderabad–Amaravati Greenfield Expressway
The Hyderabad–Amaravati Greenfield Expressway is a proposed six-lane, access-controlled expressway linking Hyderabad with Amaravati on a new alignment, planned near 298 km and still at the DPR stage in late 2025.