61,984 articles
Hypervolume indicator
The hypervolume indicator, also called the S-metric or Lebesgue measure, is a quality measure for solution sets in multi-objective optimization, introduced by Zitzler and Thiele in 1998.
Hyphanet
Hyphanet, the original Freenet project since 1999, is a peer-to-peer network for censorship-resistant, anonymous publishing and communication, storing encrypted file pieces across participants' computers and retrieving content by cryptographic key.
Hypixel Studios
Hypixel Studios is a video game developer founded in 2018 as a spin-off of the Hypixel Minecraft server, based in Northern Ireland and known for the game Hytale.
Hypocycloid gear
A hypocycloid gear is a gear profile in which a gear rolls inside a fixed ring gear, used in compact speed reducers with large reduction ratios.
Hypoplastic model
A hypoplastic model is a constitutive equation of geotechnical engineering that predicts the nonlinear, path-dependent stress–strain behavior of granular soils from a single rate equation, without a yield surface.
Hypothetical Document Embeddings
Hypothetical Document Embeddings (HyDE) is a query-time retrieval technique, introduced in 2022, where a language model's hypothetical answer document is embedded instead of the raw query.
Hypoxia in aviation
Hypoxia in aviation is a deficiency of oxygen that impairs normal function during flight, arising when cabin pressure falls, oxygen equipment fails, or blood oxygen carriage is reduced.
HyQ
HyQ, short for Hydraulic Quadruped, is a fully torque-controlled, hydraulically actuated quadruped robot developed since 2007 at the Istituto Italiano di Tecnologia in Genoa, Italy, for rough terrain and dynamic tasks.
HysetCo
HysetCo is a French hydrogen-mobility startup, formed in 2019 by Air Liquide, Idex, STEP, and Toyota, that runs hydrogen stations in Paris and leases hydrogen taxis.
HyShot
HyShot was an international scramjet flight-test program led by the University of Queensland. This program achieved the world's first flight test of supersonic combustion at Woomera in 2002.
Hyster (forklift brand)
Hyster is an American brand of forklifts, container handlers, and other lift trucks, originating in the 1929 Pacific Northwest lumber industry and now owned by Hyster-Yale Materials Handling.
Hysteresis current control
Hysteresis current control is a current-regulation method for power converters that switches to keep output current within a tolerance band around a reference current, used in motor drives and active power filters.
Hysteresis in perovskite solar cells
Hysteresis in perovskite solar cells is the dependence of a cell's measured efficiency on the direction and rate of the voltage sweep, first reported in 2014.
Hysteretic model
A hysteretic model is a mathematical model whose output depends on the history of the input, used to simulate structures, magnetic materials, and smart devices.
HystSim
HystSim, now sold as HYST Mentor, is a virtual-reality hysteroscopy training simulator developed at ETH Zurich, launched by VirtaMed in 2008, and used with real hysteroscopic instruments.
Hyūga-class helicopter destroyer
The Hyūga-class helicopter destroyer (ひゅうが型護衛艦) is a class of two helicopter-carrying destroyers of the Japan Maritime Self-Defense Force, JS Hyūga and JS Ise, commissioned from 2009.
Hyun Suk Jung
Hyun Suk Jung is a South Korean materials scientist and professor at Sungkyunkwan University in Suwon, known for research on perovskite solar cells, flexible photovoltaics, and titanium dioxide nanomaterials.
Hyun-Kon Song
Hyun-Kon Song (송현곤) is a South Korean electrochemist and associate professor at UNIST since 2008, known for batteries, supercapacitors, and a photo-rechargeable battery that charges from indoor light.
Hyundai Accent
The Hyundai Accent, sold overseas as the Hyundai Verna, is a subcompact car produced by Hyundai since 1994, its most-exported model with 4.4 million units sold overseas.
Hyundai Atos
The Hyundai Atos, sold as the Atoz in South Korea, is a city car Hyundai launched in 1997 as its first minicar, its Indian version being the Santro.
Hyundai Creta
The Hyundai Creta, also sold as the Hyundai ix25, is a compact crossover SUV made by South Korean automaker Hyundai since 2014, primarily for emerging markets like India and Brazil.
Hyundai Elantra
The Hyundai Elantra, sold as the Hyundai Avante in Korea, is a sedan built by Hyundai Motor Company, with more than 13.8 million sold worldwide as of 2021.
Hyundai Engineering & Construction
Hyundai Engineering & Construction (현대건설), commonly Hyundai E&C, is a South Korean construction firm founded in 1947 and owned by Hyundai Motor Group, known for overseas projects in 62 countries.
Hyundai Equus
The Hyundai Equus, also sold as the Hyundai Centennial, is a full-size luxury sedan that served as Hyundai's flagship from 1999 to 2015, before becoming the Genesis G90.
Hyundai Excel
The Hyundai Excel, known as the Pony Excel (포니 엑셀), is a subcompact car from South Korea, built from 1985 to 1994, which set a sales record in the U.S.
Hyundai Gamma engine
The Hyundai Gamma engine is a family of 1.4- and 1.6-liter four-cylinder petrol engines that Hyundai developed in 2006 for compact cars like the Accent and Elantra.
Hyundai Genesis (현대 제네시스)
Hyundai Genesis (현대 제네시스), also sold as the Genesis Sedan, was Hyundai's rear-wheel-drive luxury car, the 2009 North American Car of the Year, later renamed the Genesis G80.
Hyundai Genesis Coupe (현대 제네시스 쿠페)
Hyundai Genesis Coupe, also known as 현대 제네시스 쿠페, was a rear-wheel-drive 2+2 sports coupe built by Hyundai from 2008 to 2016, the company's first rear-drive sports car.
Hyundai Getz
The Hyundai Getz, sold in some markets as the Hyundai Click, is a supermini hatchback produced by Hyundai from 2002 to 2010 and positioned above the Atos.
Hyundai Grandeur (현대 그랜저)
The Hyundai Grandeur, known in export markets as the Hyundai Azera, is a large sedan produced by Hyundai since 1986. Now in its seventh generation, it has repeatedly led Korean large-sedan sales.