edgepedia

Technology and the built world

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Demaurex Deltabot

The Demaurex Deltabot is a family of Delta parallel robots sold by the Swiss company Demaurex SA, which made the first Delta robot packaging installation in 1992.

Demcon

Demcon is a Dutch technology developer and producer headquartered in Enschede, founded in 1993 by engineers Dennis Schipper and Peter Rutgers as a University of Twente spin-off.

DEME

DEME, formally DEME Group NV, is a Belgian marine engineering and dredging contractor with about 6,000 employees that provides dredging, offshore wind installation, and environmental services worldwide.

Demerit point system

A demerit point system is a licensing sanction that adds points for traffic offenses, triggering license suspension once a threshold is crossed within a set period.

Demethanizer

A demethanizer is a cryogenic distillation column used in natural gas and LNG processing to remove methane overhead, leaving ethane and heavier hydrocarbons as NGL bottoms.

Demetra C. Evangelou

Demetra C. Evangelou is an engineering-education researcher at Purdue University who received the 2010 Presidential Early Career Award for studying how early experiences lead children to pursue engineering.

Demetri Terzopoulos

Demetri Terzopoulos is a computer vision and computer graphics researcher who is a Distinguished Professor at UCLA and inventor of deformable models, including the widely used active contour "snakes" technique.

Deming Prize

The Deming Prize (デミング賞) is a Japanese award for total quality management, established in 1951 by JUSE to honor W. Edwards Deming, and awarded annually ever since.

Demis Hassabis

Demis Hassabis is a British artificial intelligence researcher who co-founded DeepMind, sold it to Google in 2014, and shared the 2024 Nobel Prize in Chemistry.

Demodulation

Demodulation, or to demodulate, is the reverse of modulation: the process a receiver uses to recover the original audio, video, or data from a modulated carrier wave.

Demodulation reference signal

A demodulation reference signal (DM-RS, DMRS) is a pilot signal in LTE and 5G NR that lets a receiver estimate the radio channel and demodulate its assigned transmission.

Demolition

Demolition, also known as razing, is the dismantling or wrecking of a building or structure. It is among construction's most dangerous work and generated over 90 percent of US construction waste in 2018.

Demonoid

Demonoid, also known as Demonoid.com, was a semi-private BitTorrent tracker founded in 2003 by the operator Deimos, surviving a 2012 raid before closing in 2018.

Demonstration Rocket for Agile Cislunar Operations

The Demonstration Rocket for Agile Cislunar Operations (DRACO) was a United States program led by DARPA with NASA to demonstrate a nuclear thermal rocket engine in orbit, planned for 2027.

Demosaicing

Demosaicing is the image-processing step that reconstructs a full-color RGB image from a camera sensor whose pixels each record only one color, usually in the Bayer pattern.

Dempster Highway

The Dempster Highway is a 740 km gravel road from Dawson City, Yukon, to Inuvik, Northwest Territories, and the only public road in Canada crossing the Arctic Circle.

Demurrage

Demurrage is a charge payable when a ship or container is held longer than the allowed time, as a daily payment to a shipowner or a per-day terminal fee.

Denavit–Hartenberg parameters

Denavit–Hartenberg parameters, also known as DH parameters, are four numbers describing the position and orientation of consecutive joint axes in a robot, introduced by Jacques Denavit and Richard Hartenberg in 1955.

Denby Pottery Company

Denby Pottery Company, also known as Denby Pottery, is an English stoneware manufacturer founded in 1809 at Denby in Derbyshire, known for salt-glazed bottles and domestic tableware.

Dendrite penetration in solid electrolytes

Dendrite penetration in solid electrolytes is the growth of lithium metal filaments through the ceramic electrolyte of an all-solid-state battery, which short-circuits the cell and remains a leading obstacle to commercialization.

Denel

Denel is a South African state-owned defense industrial group, formed in 1992 when Armscor's manufacturing business was split off; it makes the G6 howitzer and Rooivalk attack helicopter.

Denel Dynamics

Denel Dynamics, founded as Kentron in 1978, is the missile, unmanned aerial vehicle, and space systems division of Denel, South Africa's state-owned defense group, headquartered in Irene near Pretoria.

Denel NTW-20

The Denel NTW-20, also known as the Mechem NTW-20, is a South African bolt-action anti-materiel rifle designed by Tony Neophytou in the mid-1990s to destroy military equipment.

Denel Rooivalk

The Denel Rooivalk, or Rooivalk, is a South African attack helicopter that entered South African Air Force service in 1999 and first saw combat in the Congo in 2013.

Dengfeng-2 power station

Dengfeng-2 power station (华润电力登封发电厂) is a four-unit, 1,900 MW coal-fired power station in Dengfeng County, Zhengzhou, Henan, China, owned and operated by China Resources Power.

Denial-of-service attack

A denial-of-service (DoS) attack is an attack that prevents a machine from doing useful work by exhausting a resource; when launched from many compromised hosts at once, it is called a distributed (DDoS) attack.

Denice Denton

Denice Denton was an American electrical engineer and UC Santa Cruz chancellor from 2005 until her death in 2006, the first openly gay chancellor in the UC system.

Denis O'Brien

Denis O'Brien, born 1958, is an Irish entrepreneur best known for founding Esat Telecom in Ireland and Digicel in the Caribbean, selling Esat to British Telecom in 2000.

Denis Rooke

Sir Denis Rooke (1924–2008) was a British gas engineer who directed Britain's conversion from town gas to North Sea natural gas and chaired British Gas for 13 years.

Denis Yarats

Denis Yarats (Денис Ярец, born 1987) is a Belarus-born American computer scientist who co-founded the AI search company Perplexity in 2022 and serves as its chief technology officer.