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Devin SWE-bench controversy
The Devin SWE-bench controversy is the 2024 dispute over Cognition's launch claims for Devin, an AI coding agent billed as the first AI software engineer.
Devitrification
Devitrification is the partial crystallization of glass during slow cooling from the molten state, or at the surface after unsuccessful annealing or overheating; controlled, it makes glass-ceramics.
Devon Pritchard
Devon Pritchard is an American business executive serving as president and chief operating officer of Nintendo of America since 2026, succeeding Doug Bowser as the first woman in the role.
DevOps
DevOps, short for development operations, is a set of cultural philosophies, practices, and tools for delivering applications at high velocity, first named at the 2009 devopsdays conference in Ghent, Belgium.
DevOps Research and Assessment
DevOps Research and Assessment (DORA) is a research program, acquired by Google in 2018, known for the DORA software delivery metrics and the annual Accelerate State of DevOps Report.
DevSecOps
DevSecOps, short for Development, Security, and Operations, is a software development paradigm that embeds security into every phase of the DevOps lifecycle via CI/CD pipelines.
Devstral
Devstral is a family of open-weight agentic language models for software engineering from Mistral AI and All Hands AI, first released in May 2025 under the Apache 2.0 license.
Dew
Dew is water in the form of droplets that condenses from atmospheric water vapor onto surfaces cooled overnight below the air's dew point, most often on vegetation and soil.
DeWalt
DeWalt is an American power tool brand owned by Stanley Black & Decker, known for cordless power tools, hand tools, and outdoor equipment under the slogan "Guaranteed Tough".
Dewoitine D.520
The Dewoitine D.520 was a French single-seat fighter of World War II, the most capable fighter of the French Air Force in 1940, though too few reached squadrons in time.
Dexion (company)
Dexion is a storage solutions company founded in London in 1937 by the Greek-Australian engineer Demetrius Comino, known for pallet racking, shelving, and warehouse automation, and owned since 2018 by Spain's Gonvarri.
DEXRON
DEXRON is a General Motors trademark covering a family of automatic transmission fluid specifications and licensed fluids, first introduced in 1968 and still in use today.
Dexterity (company)
Dexterity, Inc. is a private American robotics company founded by Samir Menon in 2017 in Redwood City, California, known for its dual-armed warehouse robot Mech and deployments with FedEx.
Dexterity index
A dexterity index is a quantitative measure of a robot arm's ability to move and orient its end effector, computed from the Jacobian matrix to compare geometries and avoid singular configurations.
Dexterous manipulation
Dexterous manipulation is the use of multiple robot fingers to control, reorient, and reposition objects, a central goal of robotics since human hands do it effortlessly.
Dexterous Robotics Laboratory
The Dexterous Robotics Laboratory is a robotics research group at NASA's Johnson Space Center in Houston, best known for Robonaut 2, the first humanoid robot in space, and Valkyrie.
Dextre
Dextre, formally the Special Purpose Dexterous Manipulator (SPDM), is a two-armed maintenance robot built by the Canadian Space Agency for the International Space Station, launched in 2008.
DexYCB
DexYCB is a computer-vision dataset of human hands grasping real objects, created by NVIDIA and the University of Washington and presented at CVPR in 2021.
Df (Unix)
df (disk free) is a standard Unix command that reports disk space used and available on mounted file systems; it first appeared in Version 1 AT&T UNIX in 1971.
DF-17
The DF-17 (Dong Feng-17, 东风-17) is a Chinese road-mobile, solid-fueled ballistic missile carrying the DF-ZF hypersonic glide vehicle, first shown publicly in 2019 and fielded around 2020.
DF-21
The DF-21, also known as Dong Feng-21 or CSS-5, is a Chinese road-mobile, solid-fuel medium-range ballistic missile that entered service in 1991 as China's first land-mobile solid-fuel missile.
DF-21D
The DF-21D (Dong Feng-21D, NATO designation CSS-5 Mod 5) is a Chinese medium-range ballistic missile designed to strike moving ships, including aircraft carriers, from ranges exceeding 1,500 km.
DF-26
The DF-26 (Dong Feng-26, 东风-26) is a Chinese road-mobile intermediate-range ballistic missile with a 4,000 km range, able to carry nuclear or conventional warheads and reach Guam, unveiled in 2015.
DF-31
The DF-31 (Dong Feng-31, 东风-31; NATO reporting name CSS-10) is a Chinese road-mobile, three-stage, solid-fueled intercontinental ballistic missile with a range of 7,000 to over 11,000 km, first deployed in 2006.
DF-41
The DF-41, also called Dongfeng-41, is a Chinese road-mobile intercontinental ballistic missile capable of carrying MIRVs, with a range of 12,000 to 15,000 km, China's longest.
DF-5
The DF-5 (Dongfeng-5, "East Wind 5"; US designation CSS-4) is a Chinese two-stage, liquid-propellant intercontinental ballistic missile deployed in 1980 that became the basis for China's Long March 2 launch vehicles.
DF-61 (东风-61)
The DF-61 (东风-61, Dongfeng-61) is a Chinese road-mobile intercontinental ballistic missile first shown publicly at a Beijing military parade in September 2025, seen as a successor to the DF-41.
DFH-3
DFH-3 (Dong Fang Hong 3, 东方红三号) is a Chinese three-axis stabilized geostationary communications satellite bus developed in the 1990s by the China Academy of Space Technology, whose platform later baseed 41 satellites.
DFH-3B
DFH-3B is a Chinese geostationary satellite bus from the China Academy of Space Technology, the platform for BeiDou-3 GEO and IGSO satellites and LaoSat 1.
DFH-4
DFH-4 (Dong Fang Hong 4) is a large geostationary communications satellite bus developed by the China Academy of Space Technology, first launched in 2006 and sold to international customers.