61,984 articles
HiRISE
HiRISE (High Resolution Imaging Science Experiment) is a camera on NASA's Mars Reconnaissance Orbiter that images the Martian surface at the highest resolution available from orbit.
Hirohata Works
Hirohata Works (広畑製鉄所) is a Nippon Steel steelworks in Himeji, Japan, opened in 1939 and now the site of the company's first commercial electric arc furnace operation, started in 2022.
Hirohide Saito
Hirohide Saito (齊藤博英) is a Japanese bioengineer and professor at Kyoto University's CiRA, known for miRNA-responsive RNA switches and RNA-only logic circuits in mammalian cells.
Hiroki Totoki (十時 裕樹)
Hiroki Totoki (十時 裕樹) is a Japanese business executive who served as Sony's CFO from 2018 and became President and CEO of Sony Group Corporation in April 2025.
Hiromichi Kataura
Hiromichi Kataura (片浦 弘道) is a Japanese materials scientist known for the Kataura plot and molecular nanovalves, who spent most of his career at Japan's AIST.
Hirono power station
Hirono power station (広野火力発電所) is a coal-fired power station in Hirono, Fukushima Prefecture, Japan, operated by JERA and now running two 600 MW coal-fired units.
Hirono Thermal power station
Hirono Thermal Power Station (広野火力発電所) is a thermal power station in Hirono, Fukushima, Japan, opened in 1980 and now run by JERA with two 600 MW coal-fired units.
Hiroshi Inose
Hiroshi Inose (猪瀬 博, 1927–2000) was a Japanese electrical engineer at the University of Tokyo who invented time slot interchange, the switching principle at the heart of digital telephone systems.
Hiroshima AI Process
The Hiroshima AI Process (HAIP) is a Group of Seven initiative on governing advanced AI, launched by Japan at the G7 Hiroshima Summit in May 2023.
Hiroshima Gas
Hiroshima Gas (広島ガス) is a Japanese city gas utility headquartered in Hiroshima, founded in 1909 and supplying natural gas to about 419,000 customers in Hiroshima Prefecture.
Hiroyuki Aoyama (青山博之)
Hiroyuki Aoyama (青山博之) is a Japanese reinforced-concrete structural engineer who researched earthquake-resistant design and high-strength concrete as a professor at the University of Tokyo and later Nihon University.
Hiroyuki Yoshikawa
Hiroyuki Yoshikawa (吉川弘之) is a Japanese engineer who developed general design theory, led the University of Tokyo as president from 1993 to 1997, and won the 1997 Japan Prize.
HIsarna
HIsarna is a smelting-reduction ironmaking process that converts iron ore fines and non-coking coal directly into liquid hot metal in a single reactor, piloted at IJmuiden since 2011.
Hisense (海信)
Hisense, also known as Hisense Group, is a Chinese consumer electronics and home appliance group founded in 1969 in Qingdao and ranked second in global TV shipments from 2022 through 2024.
HiSilicon (海思)
HiSilicon (海思, Haishi) is Huawei's wholly owned fabless chip design subsidiary, maker of Kirin smartphone SoCs, Kunpeng server CPUs, Ascend AI accelerators, and Balong modems; hit by US sanctions in 2020, it returned via SMIC 7nm Kirin chips and Ascend 910B/910C AI chips.
Hispano-Suiza
Hispano-Suiza is a Spanish luxury automobile brand founded in Barcelona in 1904 by Damià Mateu, Francisco Seix, and engineer Marc Birkigt, known for the H6.
Hispano-Suiza H6B Dubonnet Xenia
The Hispano-Suiza H6B Dubonnet Xenia is a one-off streamlined 1938 coupé built for French racing driver André Dubonnet and named for his late wife, Xenia.
Hispasat (satellite operator)
Hispasat is a Spanish satellite communications operator constituted in 1989 and based in Madrid, operating a geostationary fleet from 30° West and 61° West, controlled since 2025 by Indra.
HIST (tokamak)
HIST (Helicity Injected Spherical Torus) is a small spherical tokamak operated by the University of Hyogo in Japan, built to test helicity injection as a non-inductive plasma current-drive method.
Histogram equalization
Histogram equalization is an image-processing transform that increases contrast by remapping pixel intensities through the cumulative distribution function, spreading them over the full intensity range.
Histogram matching
Histogram matching, also called histogram specification, is an image processing technique that remaps pixel intensities so an image's histogram approximates a chosen target, generalizing histogram equalization.
Histogram of oriented gradients
The histogram of oriented gradients (HOG) is a feature descriptor in computer vision, introduced by Navneet Dalal and Bill Triggs in 2005 for detecting people in images.
Historic American Engineering Record
The Historic American Engineering Record (HAER) is a National Park Service program founded in 1969 that documents historic engineering and industrial sites through drawings, photographs, and written reports.
Historic bridge trusts and bridgemasters
Historic bridge trusts and bridgemasters were the endowed bodies and local officers English towns used to fund bridge upkeep before modern highway authorities, under the Bridges Acts of 1530 and 1670.
Historic Civil Engineering Landmarks program
The Historic Civil Engineering Landmarks program of the American Society of Civil Engineers has recognized more than 280 projects, including the Golden Gate Bridge and Hoover Dam, since 1966.
Historic Columbia River Highway
The Historic Columbia River Highway is a 73-mile scenic road in Oregon, built from 1913 to 1922 and recognized as the first scenic highway in the United States.
Historic fortified city of Carcassonne
The Cité de Carcassonne is a medieval walled town in southern France, a UNESCO World Heritage Site restored in the 19th century by Eugène Viollet-le-Duc.
Historic tunnels by period and region
Historic tunnels by period and region is an index of notable surviving tunnels built before 1900, organized by era and country, from Hezekiah's Tunnel to the Simplon.
Historical simulation (finance)
Historical simulation is a nonparametric method for estimating Value at Risk and Expected Shortfall by applying recorded historical market moves directly to a portfolio's current positions.
History of airport identifier systems
The history of airport identifier systems traces how airport codes evolved from 1930s airline-chosen abbreviations and weather-service city codes into the parallel ICAO and IATA schemes in use today.