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18-letter words containing a, g, e

  • evolution strategy — (ES) A kind of evolutionary algorithm where individuals (potential solutions) are encoded by a set of real-valued "object variables" (the individual's "genome"). For each object variable an individual also has a "strategy variable" which determines the degree of mutation to be applied to the corresponding object variable. The strategy variables also mutate, allowing the rate of mutation of the object variables to vary. An ES is characterised by the population size, the number of offspring produced in each generation and whether the new population is selected from parents and offspring or only from the offspring. ES were invented in 1963 by Ingo Rechenberg, Hans-Paul Schwefel at the Technical University of Berlin (TUB) while searching for the optimal shapes of bodies in a flow.
  • exchange programme — an arrangement in which people from different countries visit each other's country, perhaps to strengthen links between them or to improve foreign language skills
  • exercise programme — a programme detailing a range of physical exercises and the amount of time each exercise should be performed, used especially in gymnasiums, where they are typically tailored to individuals' needs
  • exhaustive testing — (programming)   Executing a program with all possible combinations of inputs or values for program variables.
  • fall to the ground — (of a plan, theory, etc) to be rendered invalid, esp because of lack of necessary information
  • fallot's tetralogy — a congenital heart disease in which there are four defects: pulmonary stenosis, enlarged right ventricle, a ventricular septal defect, and an aorta whose origin lies over the septal defect. In babies suffering this disease the defects can be corrected by surgery
  • far eastern region — former name of Khabarovsk.
  • farewell-to-spring — a slender, showy plant, Clarkia amoena, of the evening primrose family, native to western North America, having satiny, cup-shaped, lilac-crimson or reddish-pink flowers and roundish fruit.
  • farm the long acre — to graze cows on the verge of a road
  • fatty degeneration — deterioration of the cells of the body, accompanied by the formation of fat globules within the diseased cells.
  • federal government — pertaining to or of the nature of a union of states under a central government distinct from the individual governments of the separate states, as in federal government; federal system.
  • feeping creaturism — /fee'ping kree"ch*r-izm/ A deliberate spoonerism for creeping featurism, meant to imply that the system or program in question has become a misshapen creature of hacks. This term isn"t really well defined, but it sounds so neat that most hackers have said or heard it. It is probably reinforced by an image of terminals prowling about in the dark making their customary noises.
  • ferdinand magellan — Ferdinand, c1480–1521, Portuguese navigator: discoverer of the Straits of Magellan 1520 and the Philippines 1521.
  • fight to the death — If you say that you will fight to the death for something, you are emphasizing that you will do anything to achieve or protect it, even if you suffer as a consequence.
  • flash butt welding — a method of welding metal edge-to-edge with a powerful electric flash followed by the application of pressure.
  • floating underflow — underflow
  • floating-rate note — a eurobond, often issued as a negotiable bearer bond, that has a floating rate of interest
  • flower arrangement — floral display
  • fluegelman, andrew — Andrew Fluegelman
  • fore-edge painting — a technique of painting a picture on the fore edge of a book, often in such a manner that only when the pages are slightly fanned the picture is revealed.
  • foreign-trade zone — free port (def 1).
  • forgive and forget — be reconciled
  • forwarding address — address for mail to be sent on
  • foundation garment — an undergarment, as a girdle or corset, worn by women to support or give shape to the contours of the body.
  • fracture toughness — The fracture toughness of a material is how likely it is to resist fracture.
  • fragile x syndrome — a widespread form of mental retardation caused by a faulty gene on the X chromosome.
  • fragile-x syndrome — an inherited condition characterized by learning disability: affected individuals have an X-chromosome that is easily damaged under certain conditions
  • fragmentation bomb — a bomb designed to break into many small, high-velocity fragments when detonated.
  • frederick douglass — Frederick, 1817–95, U.S. ex-slave, abolitionist, and orator.
  • free-range chicken — a chicken kept in natural nonintensive conditions
  • free-range poultry — poultry kept in natural nonintensive conditions
  • fringe-toed lizard — an iguanid lizard, Uma notata, of sandy deserts of the western U.S. and Mexico, having a wedge-shaped snout and toes fringed with long, pointed scales.
  • fuel-saving device — a device that increases the fuel efficiency of a vehicle, so that it uses less fuel for a further distance
  • fulminating powder — powder that explodes by percussion.
  • functional testing — (testing)   (Or "black-box testing", "closed-box testing") The application of test data derived from functional requirements without regard to how the system is implemented.
  • funding operations — the conversion of government floating stock or short-term debt into holdings of long-term bonds
  • gabriele dannunzio — Gabriele [Italian gah-bree-e-le] /Italian ˌgɑ briˈɛ lɛ/ (Show IPA), (Duca Minimo) 1863–1938, Italian soldier, novelist, and poet.
  • gainful employment — an occupation that pays an income
  • galactic longitude — the angular distance in degrees measured eastward in the galactic plane from a radius drawn from the earth as center to the constellation Sagittarius.
  • galilean satellite — any of the four large satellites of the planet Jupiter – Io, Europa, Ganymede, or Callisto – discovered in 1610 by Galileo
  • galilean telescope — a refracting telescope that forms an erect image, consisting of an objective of relatively long focal length that causes light rays to converge and an eyepiece of short focal length that causes them to diverge.
  • gamal abdel nasser — Gamal Abdel [guh-mahl ab-doo l,, juh-] /gəˈmɑl ˈæb dʊl,, dʒə-/ (Show IPA), 1918–70, Egyptian military and political leader: prime minister of Egypt 1954–56; president of Egypt 1956–58; president of the United Arab Republic 1958–70.
  • gamblers anonymous — an organization that holds group meetings to help people who are addicted to gambling
  • garbage collection — (programming)   (GC) The process by which dynamically allocated storage is reclaimed during the execution of a program. The term usually refers to automatic periodic storage reclamation by the garbage collector (part of the run-time system), as opposed to explicit code to free specific blocks of memory. Automatic garbage collection is usually triggered during memory allocation when the amount free memory falls below some threshold or after a certain number of allocations. Normal execution is suspended and the garbage collector is run. There are many variations on this basic scheme. Languages like Lisp represent expressions as graphs built from cells which contain pointers and data. These languages use automatic dynamic storage allocation to build expressions. During the evaluation of an expression it is necessary to reclaim space which is used by subexpressions but which is no longer pointed to by anything. This reclaimed memory is returned to the free memory pool for subsequent reallocation. Without garbage collection the program's memory requirements would increase monotonically throughout execution, possibly exceeding system limits on virtual memory size. The three main methods are mark-sweep garbage collection, reference counting and copying garbage collection. See also the AI koan about garbage collection.
  • garden loosestrife — any of various plants belonging to the genus Lysimachia, of the primrose family, having clusters of usually yellow flowers, as L. vulgaris (garden loosestrife) or L. quadrifolia (whorled loosestrife)
  • gas-cooled reactor — a nuclear reactor using a gas as the coolant. In the Mark I type the coolant is carbon dioxide, the moderator is graphite, and the fuel is uranium cased in magnox
  • gas-discharge tube — any tube in which an electric discharge takes place through a gas
  • gas-permeable lens — a semisoft contact lens, usually removed each day, that allows air to pass through to the eye and affords a wider range of vision corrections than a soft contact lens.
  • gastroduodenostomy — See under gastroenterostomy.
  • gastroenterologist — the study of the structure, functions, and diseases of digestive organs.
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