22-letter words containing g, r
- data address generator — (architecture) (DAG) The mechanism which generates temporary memory addresses for data that is transferred between memory and registers in a Digital Signal Processor. Certain DSP architectures incorporate more than one DAG to simplify the programming needed to move blocks of data between buffers. For instance, certain Fast Fourier Transform algorithms requiring bit reversing, can use the DAG for that purpose, or they can use two DAGS, one for Program Memory Data (PMD), and the other for Data Memory Data (DMD).
- de broglie wave length — the postulate of wave mechanics that a particle of mass m moving at a velocity v will have the properties of a wave of wavelength h / mv (de Broglie wavelength) where h is Planck's constant.
- delaunay triangulation — (mathematics, graphics) (After B. Delaunay) For a set S of points in the Euclidean plane, the unique triangulation DT(S) of S such that no point in S is inside the circumcircle of any triangle in DT(S). DT(S) is the dual of the voronoi diagram of S.
- descriptive cataloging — the aspect of cataloging concerned with the bibliographic and physical description of a book, recording, or other work, accounting for such items as author or performer, title, edition, and imprint as opposed to subject content.
- devil's darning needle — dragonfly
- diachronic linguistics — historical linguistics.
- digital control system — (systems) (DCS) A digital computer used for real-time control of a dynamic system, usually in an industrial environment, possibly as part of a Supervisory Control and Data Acquisition (SCADA) system. A DCS samples feedback from the system under control and modifies the control signals in an attempt to achieve some desired behaviour. Analysis of such digital-analogue feedback systems can involve mathematical methods such as difference equations, Laplace transforms, z transfer functions, state space models and state transition matrices.
- digital radio mondiale — (communications) (DRM) A form of monaural digital broadcast using carrier frequencies below 30 MHz. DRM uses MPEG-4 AAC Main Profile and SBR at data rates of 16-25 kbps.
- digital standard mumps — (DSM) DEC's version of MUMPS.
- digital versatile disc — (storage) (DVD, formerly "Digital Video Disc") An optical storage medium with improved capacity and bandwidth compared with the Compact Disc. DVD, like CD, was initally marketed for entertainment and later for computer users. [When was it first available?] A DVD can hold a full-length film with up to 133 minutes of high quality video, in MPEG-2 format, and audio. The first DVD drives for computers were read-only drives ("DVD-ROM"). These can store 4.7 GBytes - over seven times the storage capacity of CD-ROM. DVD-ROM drives read existing CD-ROMs and music CDs and are compatible with installed sound and video boards. Additionally, the DVD-ROM drive can read DVD films and modern computers can decode them in software in real-time. The DVD video standard was announced in November 1995. Matshusita did much of the early development but Philips made the first DVD player, which appeared in Japan in November 1996. In May 2004, Sony released the first dual-layer drive, which increased the disc capacity to 8.5 GB. Double-sided, dual-layer discs will eventually increase the capacity to 17 GB. Write-once DVD-R ("recordable") drives record a 3.9GB DVD-R disc that can be read on a DVD-ROM drive. Pioneer released the first DVD-R drive on 1997-09-29. By March 1997, Hitachi had released a rewritable DVD-RAM drive (by false analogy with random-access memory). DVD-RAM drives read and write to a 2.6 GB DVD-RAM disc, read and write-once to a 3.9GB DVD-R disc, and read a 4.7 GB or 8.5 GB DVD-ROM. Later, DVD-RAM discs could be read on DVD-R and DVD-ROM drives.
- digital video recorder — See DVR.
- dilation and curettage — a surgical method for the removal of diseased tissue or an early embryo from the lining of the uterus by means of scraping.
- direct public offering — A direct public offering is stock offered directly for sale to investors by a company without the use of underwriters or brokers.
- directed acyclic graph — (DAG) A directed graph containing no cycles. This means that if there is a route from node A to node B then there is no way back.
- directed-energy device — beam weapon.
- directory system agent — (DSA) The software that provides the X.500 Directory Service for a portion of the directory information base. Generally, each DSA is responsible for the directory information for a single organisation or organisational unit.
- dishonorable discharge — the discharge of a person from military service for an offense more serious than one for which a bad-conduct discharge is given.
- distributed generation — A distributed generation system involves a person or company generating some of their power requirements in different ways, such as locally, or using renewable energy, in order to avoid taking it all from the grid.
- distributed processing — a system consisting of a network of microcomputers performing certain functions and linked with a main computer used for more complex tasks
- dog's dinner/breakfast — You describe something as a dog's breakfast or dog's dinner in order to express your disapproval of it, for example because it is very untidy, badly organized, or badly done.
- draft-quality printing — low-quality, high-speed output in printed form from a printer linked to a word processor
- dread high bit disease — (character) A condition endemic to PRIME (also known as "PR1ME") minicomputers that results in all the characters having their high bit (0x80, see meta bit) ON rather than OFF. This complicates transporting files to other systems and talking to true 8-bit devices. Folklore had it that PRIME adopted the convention in order to save 25 cents per serial line per machine; PRIME old-timers, on the other hand, claim they inherited the disease from Honeywell via customer NASA's compatibility requirements and struggled heroically to cure it. Whoever was responsible, this probably qualifies as one of the most cretinous design tradeoffs ever made. A few other machines have exhibited similar brain damage.
- drive-through delivery — childbirth after which the mother has a very brief hospital stay.
- east greenland current — a cold ocean current of low salinity flowing south along the east coast of Greenland.
- echegaray y eizaguirre — José (xoˈse). 1832–1916, Spanish dramatist, statesman, and mathematician. His plays include Madman or Saint (1877); Nobel prize for literature 1904
- electrical engineering — Electrical engineering is the designing, constructing, and maintenance of electrical devices.
- electroencephalographs — Plural form of electroencephalograph.
- electroencephalography — The measurement of electrical activity in different parts of the brain and the recording of such activity as a visual trace (on paper or on an oscilloscope screen).
- electromagnetic moment — a measure of the magnetic strength of a magnet or current-carrying coil, expressed as the torque produced when the magnet or coil is set with its axis perpendicular to unit magnetic flux density. It is measured in ampere metres squared
- electrophysiologically — In an electrophysiological way.
- emergency road service — a form of motoring insurance that sends assistance to drivers when their vehicles break down on a journey; it is provided either by the national or regional automobile association or by a private insurance company
- enchanter's nightshade — any of several onagraceous plants of the genus Circaea, esp C. lutetiana, having small white flowers and bristly fruits
- engineering consultant — a consultant specializing in engineering
- engineering industries — the industries creating engineering products
- english cocker spaniel — any of a breed of small spaniel, similar to and the progenitor of the cocker spaniel
- equal rights amendment — a proposed amendment to the US Constitution enshrining equality between the sexes
- evolutionary algorithm — (EA) An algorithm which incorporates aspects of natural selection or survival of the fittest. An evolutionary algorithm maintains a population of structures (usually randomly generated initially), that evolves according to rules of selection, recombination, mutation and survival, referred to as genetic operators. A shared "environment" determines the fitness or performance of each individual in the population. The fittest individuals are more likely to be selected for reproduction (retention or duplication), while recombination and mutation modify those individuals, yielding potentially superior ones. EAs are one kind of evolutionary computation and differ from genetic algorithms. A GA generates each individual from some encoded form known as a "chromosome" and it is these which are combined or mutated to breed new individuals. EAs are useful for optimisation when other techniques such as gradient descent or direct, analytical discovery are not possible. Combinatoric and real-valued function optimisation in which the optimisation surface or fitness landscape is "rugged", possessing many locally optimal solutions, are well suited for evolutionary algorithms.
- examining the entrails — The process of grovelling through a core dump or hex image in an attempt to discover the bug that brought a program or system down. The reference is to divination from the entrails of a sacrified animal. Compare runes, incantation, black art, desk check.
- extended affix grammar — (language, grammar) (EAG) A formalism for describing both the context free syntax and the context sensitive syntax of languages. EAGs belong to the family of two-level grammars. They are very closely related to two-level van Wijngaarden grammars. EAG can be used as a specification formalism, specifying in relations rather than functions, or as a relational programming language like PROLOG.
- fall prey to something — To fall prey to something bad means to be taken over or affected by it.
- financial underwriting — Financial underwriting is the process of assessing whether the proposed sum insured and product are reasonable when considering the possible financial loss to the client.
- fitzgerald contraction — the hypothesis that a moving body exhibits a contraction in the direction of motion when its velocity is close to the speed of light.
- flexible-rate mortgage — adjustable-rate mortgage.
- floating exchange rate — a system in which the value of a currency fluctuates against other currencies in accordance with market forces
- for a laugh/for laughs — If you do something for a laugh or for laughs, you do it as a joke or for fun.
- free and common socage — Medieval History. land held by a tenant who rendered certain honorable and nonservile duties to his lord.
- frequency shift keying — (communications) (FSK) The use of frequency modulation to transmit digital data, i.e. two different carrier frequencies are used to represent zero and one. FSK was originally used to transmit teleprinter messages by radio (RTTY) but can be used for most other types of radio and land-line digital telegraphy. More than two frequencies can be used to increase transmission rates.
- fresh out of something — If you are fresh out of something, you have recently used the last of it and have none left.
- fringed with something — having a specified thing around the edge
- front of house manager — A front of house manager is responsible for the reception and reservations at a hotel.