127,669 articles
Applied ethics
Applied ethics: the branch of ethics treating moral problems, practices, and policies in personal life, professions, technology, and government, distinct from metaethics, normative ethics, and professional ethics.
Applied general equilibrium
Applied general equilibrium (AGE), also called computable general equilibrium (CGE), is a family of economy-wide economic models that solve supply, demand, and price equations numerically for actual economies.
Applied linguistics
Applied linguistics is an interdisciplinary field that addresses practical language problems. Originating in 1941, it covers language teaching, acquisition, and is currently a major focus for generative AI research.
Applied psychology
Applied psychology is the use of psychological research methods and findings to solve practical problems in health, work, education, law, and technology, spanning specialties like clinical and industrial-organizational psychology.
Applied Therapeutics
Applied Therapeutics was a clinical-stage New York biopharmaceutical company whose lead drug govorestat targeted Galactosemia; after an FDA rejection it was acquired by Cycle Pharmaceuticals in 2026.
Appliqué thangka
An appliqué thangka, called gos sku in Tibetan, is a Tibetan Buddhist devotional image stitched from shaped pieces of silk and brocade, first made in the 15th century.
Appointment of Fujiwara no Yoshifusa as Regent
In 866, after the Ōtenmon Incident, Fujiwara no Yoshifusa (藤原良房) became regent for the child Emperor Seiwa, the first regent not of imperial blood and origin of Fujiwara regency politics.
Appointment of Tahir ibn al-Husayn to the eastern governorate
The appointment of Tahir ibn al-Husayn to the eastern governorate was Caliph al-Ma'mun's grant of Khorasan and the eastern provinces to his general in 820.
Appointment of the first shugo and jitō
The appointment of the first shugo and jitō (守護・地頭の設置) was the 1185 authorization letting Minamoto no Yoritomo place military governors and estate stewards, widely treated as a founding moment of warrior government.
Appomattox Court House National Historical Park
Appomattox Court House National Historical Park, a National Park Service unit in Appomattox County, Virginia, preserves the village and McLean House where Lee surrendered the Army of Northern Virginia to Grant on April 9, 1865.
Apportionment in the European Parliament
Apportionment in the European Parliament allocates its 720 seats among EU Member States under Article 14(2) TEU: 6 to 96 seats each, degressive proportionality, European Council Decision 2023/2061, no permanent formula yet.
Apportionment paradox
Apportionment paradox: counterintuitive failures of seat-allocation methods, including the Alabama paradox, population paradox, and new-states paradox; Hamilton/largest-remainder method suffers all three while divisor methods avoid them.
Appreciative inquiry
Appreciative inquiry is a strengths-based organizational change method developed by David Cooperrider in 1986, which engages stakeholders in asking positive questions about what gives life to an organization at its best.
Apprenticeship
Apprenticeship: structured, paid training combining on-the-job and off-the-job learning under an apprenticeship agreement, leading to a recognized qualification; defined by ILO R208 (2023), rooted in medieval guilds.
Approach-avoidance task
The approach-avoidance task is a psychology reaction-time paradigm measuring automatic approach and avoidance tendencies, introduced by Andrew Solarz in 1960 and widely used in research on addiction and phobias.
Appropriation (art)
Appropriation in art is the intentional borrowing and copying of existing images and objects, recontextualized so they take on new meaning, a practice central to Pop art and postmodernism.
Approval voting
Approval voting: an electoral system where voters mark every candidate they approve and the highest total wins; formalized by Brams and Fishburn, used in Fargo and St. Louis elections and by the United Nations and scientific societies.
Apptronik
Apptronik is an Austin, Texas robotics startup, spun out of UT Austin in 2016, that develops the Apollo humanoid robot for material handling in factories and warehouses.
AppZen
AppZen is a San Jose, California-based artificial intelligence software company founded in 2012 by Anant Kale and Kunal Verma that audits expense, accounts payable, and corporate card workflows for enterprise finance teams.
APR Corp
APR Corp is a Seoul-based South Korean beauty company founded by Kim Byung-hoon in 2014, known for the Medicube and Aprilskin brands and Medicube Age-R home beauty devices.
APRA
APRA (Alianza Popular Revolucionaria Americana) is a Peruvian political party founded in exile by Víctor Raúl Haya de la Torre in the mid-1920s, originally a continental anti-imperialist movement.
APRA coup attempt
The APRA coup attempt, also called the January 23 coup, was a failed January 1950 operation in Bandung led by Raymond Westerling's Angkatan Perang Ratu Adil, killing 94 soldiers.
Apraava Energy
Apraava Energy, formerly CLP India, is a Mumbai-based Indian energy company jointly owned by CLP Group and La Caisse, developing wind, solar, transmission, and smart metering.
Aprecia Pharmaceuticals
Aprecia Pharmaceuticals is a privately held pharmaceutical company in Langhorne, Pennsylvania, using its ZipDose 3D printing to make SPRITAM, the first FDA-approved 3D-printed drug product.
Apreo Health
Apreo Health is a privately held medical device company founded in 2021 in Menlo Park, California, developing the BREATHE Airway Scaffold, a bronchoscopic nitinol implant for severe emphysema.
Apries
Apries, also known as Hophra, was a pharaoh of Egypt's Twenty-sixth Dynasty who reigned from 589 to 570 BC and was overthrown by his general Amasis.
April 1
April 1, the 91st day of the Gregorian year (92nd in leap years), is April Fools' Day worldwide and also Assyrian New Year (Kha b-Nisan), Cyprus National Day, Iran's Islamic Republic Day, and Odisha Day in India.
April 10
April 10 is the 100th day of the year in common years, the anniversary of the 1815 Mount Tambora eruption and the 1998 Good Friday Agreement.
April 11
April 11, the 101st day of the year (102nd in leap years), is the calendar date of Napoleon's 1814 abdication and Treaty of Fontainebleau, the 1900 USS Holland submarine purchase, Buchenwald's 1945 liberation, MacArthur's 1951 dismissal, the 1961 Eichmann trial, and the 1970 Apollo 13 launch.
April 12
April 12, the 102nd day of the year, marks Yuri Gagarin's 1961 first human spaceflight (Cosmonautics Day), the 1861 Fort Sumter attack that began the US Civil War, FDR's 1945 death, and Columbia's 1981 first shuttle launch.