All articles starting with U
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USB mass storage device class
The USB mass storage device class (MSC or UMS) is a USB standard that lets computers use flash drives and external drives without vendor-specific software.
USB On-The-Go
USB On-The-Go, or USB OTG, is a USB supplement from 2001 letting devices like phones and cameras act as limited hosts, connecting directly without a PC.
USB Power Delivery
USB Power Delivery (USB PD) is a USB-IF charging specification, first published in 2012, that lets devices negotiate power over USB Type-C at up to 240 W.
USB-C
USB-C, formally USB Type-C, is a reversible 24-pin USB connector standard finalized by the USB Implementers Forum in 2014, now common on phones, tablets, and laptops.
USB4
USB4 is a Universal Serial Bus specification published by the USB-IF that tunnels USB 3.x, DisplayPort, and PCIe traffic over a single USB-C cable at up to 80 Gbit/s.
USBC Masters
USBC Masters: annual tenpin bowling major championship, founded 1951, run by USBC as a PBA Tour major. 15-game qualifying, 64-player double-elimination match play, $100,000 first prize; 2026 champion Boog Krol. Distinct from local association Masters events.
USC Events
USC Events, short for United State of Consciousness, was a Seattle electronic dance music promoter founded by Chad Anderson, known for the Paradiso and FreakNight festivals.
USC Trojans
USC Trojans: University of Southern California athletic teams, Big Ten members since 2024. Known for 11 football national championships, 8 Heisman winners, 33 Rose Bowls, and more Olympic athletes than any other university.
USC Trojans football
USC Trojans football, University of Southern California college football program (1888, Big Ten since 2024): 11 national championships, 8 Heisman winners, 33 Rose Bowl appearances, home at the Los Angeles Memorial Coliseum since 1923, coach Lincoln Riley.
USC Trojans men's basketball
USC Trojans men's basketball: University of Southern California's Division I program, founded 1907, now in the Big Ten after leaving the Pac-12; Final Four 1940, Elite Eight 2001 and 2021, coached by Eric Musselman since 2024.
USCG seagoing buoy tender
A USCG seagoing buoy tender is a Coast Guard cutter that places, services, and recovers navigation buoys, while also performing search and rescue, law enforcement, oil-spill response, and icebreaking.
USCGC Eagle (WIX-327)
USCGC Eagle is a 295-foot barque, built in Germany in 1936 as Horst Wessel, serving since 1946 as the Coast Guard Academy's sail-training ship in New London, Connecticut.
USCGC Taney
USCGC Taney, also called US Coast Guard Cutter Taney (WHEC-37), was a Treasury-class Coast Guard cutter commissioned in 1936, notable as the last surviving warship that fought in the 1941 attack on Pearl Harbor.
Uschi Digard
Uschi Digard, born Ursula, is a Swiss-born Swedish-American model and actress who was a leading nude figure model and Russ Meyer softcore film star of the 1970s.
Uschi Disl
Uschi Disl (Ursula Disl), German biathlete born 1970 in Bad Tölz; nine Olympic medals including relay golds 1998 and 2002, 30 World Cup wins, retired 2006, now expert in Sweden.
USco CTIO 108
USco CTIO 108 (UScoCTIO 108), an M7 brown dwarf in Upper Scorpius about 470 light-years away, hosts USco CTIO 108 B, a 14-Jupiter-mass companion at 670 au near the deuterium-burning limit.
USco1621 A
USco1621 A is a young M2.5-type red dwarf in the Upper Scorpius association about 450 light-years from the Sun, hosting USco1621 b, a companion at the deuterium-burning limit.
Uscovilca
Uscovilca (Usku Willka) was a Chanca warlord who unified the Chanca confederation and led its assault on the Inca capital of Cuzco; his defeat brought Pachacuti to the throne.
USDA Soil Taxonomy
USDA Soil Taxonomy is a hierarchical soil classification system developed by the United States Department of Agriculture under Guy Smith, published in 1975 and used worldwide.
USDC
USDC (USD Coin) is a stablecoin pegged one-to-one to the US dollar and issued by Circle. Launched in 2018, it runs on public blockchains and is redeemable for one dollar.
Use case
A use case is a requirements-modeling construct describing a system's observable behavior as an actor pursues a goal, originated by Ivar Jacobson at Ericsson and adopted into UML.
Use case diagram
A use case diagram is a UML behavioral diagram that shows actors outside a system using its functions to achieve goals, depicting actors, use cases, and their relationships.
Use case points
Use case points, or UCP, is a software size and effort estimation method introduced by Gustav Karner in 1993 that derives estimates from a system's use case model.
Use of chemical weapons in the Syrian civil war
Use of chemical weapons in the Syrian civil war: sarin, chlorine, and sulfur mustard attacks documented from 2013 Ghouta onward; OPCW FFM, JIM, and IIT investigations attributed most attacks to Syrian government forces.
Use of copyrighted works by the second Trump administration
Use of copyrighted works by the second Trump administration: official videos using artists' music without permission, a DOJ statement of interest backing OpenAI's fair-use defense against The New York Times, the AI Action Plan, and the firing of Copyright Office director Shira Perlmutter.
Use of nigger in proper names
Use of the racial slur nigger in proper names of US geographic features, ordered removed from federal maps by Interior Secretary Stewart Udall in 1962-1963 and replaced with "Negro", leaving hundreds of contested toponyms.
Use of nigger in the arts
Use of nigger in the arts: the racial slur (from Latin niger via Spanish negro) in literature, film, music, and theater, covering Huckleberry Finn's 219 uses, Nigger Heaven, Pulp Fiction debates, reclamation as nigga, and editorial censorship practices.
Use of X by Donald Trump
Use of X by Donald Trump covers his @realDonaldTrump activity on Twitter/X: heavy first-term use, the Jan. 8, 2021 ban, Truth Social years, reinstatement by Musk, and his August 2024 return and interview.
Use value
Use value (Gebrauchswert) is, in classical and Marxian political economy, the qualitative usefulness of a commodity, its capacity to satisfy a human need, contrasted with exchange value.
Use Your Illusion I
Use Your Illusion I: Guns N' Roses' third studio album, half of the twin 1991 Geffen release with Use Your Illusion II; 16 songs, debuted at Billboard number 2, features November Rain and Live and Let Die.