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Jürgen Schmidhuber
Jürgen Schmidhuber is a German computer scientist known for the LSTM neural network, longtime head of the Swiss AI Lab IDSIA, and Director of the AI Initiative at KAUST.
Juris Hartmanis
Juris Hartmanis was a Latvian-born American computer scientist who, with Richard E. Stearns, founded computational complexity theory, won the 1993 ACM Turing Award, and chaired Cornell's computer science department.
Jurjen Battjes
Jurjen Battjes (born 1939) is a Dutch coastal engineer and fluid mechanician, Professor Emeritus at Delft University of Technology, known for the surf-similarity parameter and the Battjes–Janssen wave-breaking model.
Jurong hydroelectric plant
Jurong hydroelectric plant (句容抽水蓄能电站) is a 1,350 MW pumped-storage station in Jurong, Jiangsu, China, owned by State Grid Xinyuan and fully operational since October 2025.
Jurong Island power station
Jurong Island power station is the group of power stations on Singapore's Jurong Island, starting with the Jurong Power Station in 1971 and the offshore Pulau Seraya plant in 1988.
Jurong power station
Jurong power station (华电句容发电厂), also known as Huadian Jurong power station, is a 4,000 MW coal-fired power station in Jurong, Zhenjiang, Jiangsu, China, owned by Huadian Jiangsu Energy.
Jury rigging
Jury rigging, also called jury-rigging, is the making of temporary, makeshift repairs with whatever is at hand, originating in sailing, where a jury mast replaces a broken mast.
Jusepín Oil Field
The Jusepín Oil Field is an oil field in Monagas state, eastern Venezuela, discovered in 1938; it peaked at about 54,000 barrels a day in 1946 before PDVSA shut it in 1989.
Just (command runner)
Just is a command runner written in Rust by Casey Rodarmor, first released in 2016, that stores named recipes in a justfile with make-inspired syntax and, unlike make, performs no file change detection.
Just culture
Just culture is an organizational safety culture introduced by James Reason in 1997, in which honest errors are reported without punishment while negligence is still held accountable.
Just Transition
A just transition is a framework for greening economies while protecting workers and communities through decent work, social protection, and social dialogue; it entered the Paris Agreement's preamble in 2015.
Just Transition Mechanism
The Just Transition Mechanism is a European Union financing framework, proposed in January 2020 under the European Green Deal, supporting regions and workers most affected by the move to climate neutrality by 2050.
Just Walk Out
Just Walk Out is Amazon's checkout-free retail technology, sold through AWS, that uses cameras and shelf weight sensors to charge shoppers who leave without passing a register.
Just-in-time compilation
Just-in-time compilation, or JIT, compiles program code to native machine code at run time rather than before execution, as in Java's HotSpot, V8, and PyPy engines.
Just-in-time manufacturing
Just-in-time (JIT) manufacturing is a production philosophy, developed at Toyota, in which parts are made and delivered only when needed, minimizing inventory through kanban pull signals.
Justdial
Justdial (Justdial.com) is an Indian local search engine and business directory founded by V. S. S. Mani in 1996, listed in 2013, and controlled by Reliance Retail since 2021.
Justin E. Kerwin
Justin E. Kerwin (Justin Elliot Kerwin, known as Jake) was an American naval architect and MIT professor who pioneered computational methods for marine propeller design.
Justin Hanes
Justin Hanes is an American chemical engineer who directs the Johns Hopkins Center for Nanomedicine, known for mucus-penetrating particles that improve drug and gene delivery.
Justin Hotard
Justin Hotard is an American technology executive who became President and CEO of Nokia in April 2025, having previously led Intel's Data Center and AI Group.
Justin K. Romberg
Justin K. Romberg is an American electrical engineer and applied mathematician at Georgia Tech, known for co-authoring the foundational 2006 papers of compressed sensing and for receiving a PECASE award.
Justin Kan
Justin Kan is an American entrepreneur and investor best known as a co-founder of Justin.tv, whose gaming offshoot became Twitch, sold to Amazon for $970 million in 2014.
Justin Sun (孙宇晨)
Justin Sun (孙宇晨), born 1990 in Xining, China, is the founder of the TRON blockchain and owner of Poloniex, HTX affiliation, and BitTorrent; Forbes estimates his net worth at $8.5 billion (April 2026), and his 2023 SEC fraud suit settled in March 2026 for $10 million.
Justin Wilkerson
Justin Wilkerson is an American mechanical engineer at Texas A&M University and a 2025 recipient of the Presidential Early Career Award for Scientists and Engineers.
Justin.tv
Justin.tv was a live video streaming website launched in San Francisco in 2007 by Justin Kan, Emmett Shear, Michael Seibel, and Kyle Vogt, shut down in 2014 to focus on Twitch.
JustWatch
JustWatch is a free streaming guide, founded in Berlin in 2014, that shows where movies and TV shows can be legally streamed, rented, or bought online.
Juul
Juul, made by Juul Labs, is a closed-system electronic cigarette launched in 2015 that dominated US e-cigarette sales before a youth vaping controversy brought lawsuits and FDA review.
Juventas
Juventas is a 6U CubeSat built by GomSpace in Luxembourg for ESA's Hera mission, which will make the first radar soundings inside the asteroid Dimorphos and then land on it.
Juventus Stadium
Juventus Stadium, known as the Allianz Stadium, is the football stadium in Turin, Italy, owned by Juventus F.C.; it opened in 2011 and holds over 41,000 spectators.
JUWELS
JUWELS (Jülich Wizard for European Leadership Science) is a modular supercomputer at Forschungszentrum Jülich in Germany, with a 2018 Cluster module and a 2020 GPU Booster.
Jwa-Min Nam
Jwa-Min Nam is a South Korean chemist and professor at Seoul National University known for plasmonic nanogap particles enabling reproducible single-molecule SERS detection and for DNA-directed assembly of gold nanoparticle architectures.