Encyclopedia

Dynamic programming In computer science, dynamic programming is a method of solving problems exhibiting the properties of overlapping subproblems and optimal substructure (described below) that takes much less time than naĂŻve methods.
Dynamic programming language Dynamic programming language is a term used broadly in computer science to describe a class of high level programming languages which share many common runtime behaviors that other languages might perform during compilation, if at all. These behaviors could include extension of the program, by adding new code, or by extending objects and definitions, or by modifying the type system, all during program execution.
Dynamic random access memory Dynamic random access memory (DRAM) is a type of random access memory that stores each bit of data in a separate capacitor within an integrated circuit. Since real capacitors leak charge, the information eventually fades unless the capacitor charge is refreshed periodically.
Dynamic recompilation In computer science, dynamic recompilation (sometimes abbreviated to dynarec) is a feature of some emulators and virtual machines, where the system may recompile some part of a program during execution. By compiling during execution, the system can tailor the generated code to reflect the program's run-time environment, and perhaps produce more efficient code by exploiting information that is not available to a traditional static compiler.
Dynamic recrystallization Dynamic recrystallization (DRX) is a type of recrystallization process, found within the field of metallurgy. In dynamic recrystallization, as opposed to static recrystallization, the nucleation and growth of new grains occurs during deformation rather than afterwards as part of a separate heat treatment.
Dynamic reserve Reserve in the context of the Dynamic Energy Budget theory means the set of metabolites (mostly polymers and lipids) that the organism can use for metabolic purposes. These compounds can have active metabolic functions, however.
Dynamic scoring Dynamic scoring predicts the impact of fiscal policy changes by forecasting the effects of economic agents' reactions to policy. It is an adaptation of static scoring, the traditional method for analyzing policy changes.
Dynamic sea surface topography Dynamic sea surface topography is the average difference between the actual surface of the Earth and a geoid. It is caused by a steady state ocean current field in the ocean which in turn is caused by climatologic winds and temperature transport in the oceans.
Dynamic soaring Dynamic soaring is a flying technique used to gain kinetic energy without effort by repeatedly crossing the boundary between air masses of significantly different horizontal velocity. Such zones of high wind gradient are generally found close to obstacles and close to the ground, so the technique is mainly used by birds, but glider pilots have occasionally been able to soar dynamically in meteorological wind shears at higher altitudes.
Dynamic stall Dynamic stall is a non-linear unsteady aerodynamic effect that occurs when aerofoils rapidly change the angle of attack. The rapid change can cause a strong vortex to be shed from the leading edge of the aerofoil, and travel backwards above the wing.
Dynamic steering response Dynamic steering response (DSR) is a car safety technique that corrects the rate of hydraulic or electric power steering system to adapt it to vehicle's speed and road conditions. Similar to DIRAVI, this system was first featured in the SEAT Leon Cupra R and has since been used in a wide range of models including the Ibiza, Cordoba, new Leon, Altea and new Toledo.
Dynamic stretching Dynamic stretching is a form of flexibility beneficial in sports utilizing momentum from form, static-active stretching strength and the momentum from static-active stretching strength in an effort to propel the muscle into an extended range of motion not exceeding one's static-passive stretching ability. Anything beyond this range of motion becomes ballistic stretching.
Dynamic Spectrum Management Dynamic Spectrum Management (DSM) is a technique being researched to improve Digital Subscriber Line (DSL) performance over ordinary copper phone lines by reducing or eliminating crosstalk between DSL phone lines that are close together.
Dynamic Strength Dynamic Strength is the name of a system created by Kung Fu San Soo expert, Harry Wong. Dynamic Strength involves a series of "flowing isometric" moves where the practictioner's muscles provide resistance.
Dynamic Systems Development Method "Dynamic Systems Development Method" (DSDM) is a framework based originally around Rapid Application Development (RAD), supported by its continuous user involvement in an iterative development and incremental approach which is responsive to changing requirements, in order to develop a system that meets the business needs on time and on budget. It is one of a number of Agile methods for developing software and forms part of the Agile Alliance.
Dynamic testing Dynamic testing (or dynamic analysis) is a term used in software engineering to describe the testing of the dynamic behaviour of code. That is dynamic analysis refers to the examination of the physical response from the system to variables that change with time and are not consistent.
Dynamic textures Dynamic textures are surface textures on a skin designed to change from one untextured or smooth state to another textured state in response to an external stimulus. Dynamic textures extend in the spatial-temporal dimension the concept of texture, which was previously intuitively defined as a tactile surface with many and often repeated elementary forms where each element is too small to be considered an object.
Dynamic theory of gravity The dynamic theory of gravity was an alleged unified field theory which the distinguished inventor Nikola Tesla claimed to have constructed late in his life. According to a 1937 press statement by Tesla, he had succeeded in unifying gravity and electromagnetism.
Dynamic time warping Dynamic time warping is an algorithm for measuring similarity between two sequences which may vary in time or speed. For instance, similarities in walking patterns would be detected, even if in one video the person was walking slowly and if in another he or she were walking more quickly, or even if there were accelerations and decelerations during the course of one observation.
Dynamic Trunking Protocol Dynamic Trunking Protocol (herein referred to as “DTP”), is a proprietary protocol developed by Cisco Systems for the purpose of negotiating trunking on a link between two switches participating in a VLAN, and for negotiating the type of trunking encapsulation (802.1Q) to be used.
Dynamic web page In classical hypertext navigation occurs among "static" documents, and, for web users, this experience is reproduced using static web pages. However, web navigation can also provide an interactive experience that is termed "dynamic".
Dynamic Warehousing Dynamic Warehousing is a term coined by IBM, for an approach to the data warehousing market based on the ability of the data warehouse and/or data mart system(s) to scale up '"and"' scale out, and morph with OLTP and mixed-workload systems.
Dynamic-link library Dynamic-link library (also written without the hypen), or DLL, is Microsoft's implementation of the shared library concept in the Microsoft Windows and OS/2 operating systems. These libraries usually have the file extension DLL, OCX (for libraries containing ActiveX controls), or DRV (for legacy system drivers).
Dynamical billiards A billiard is a dynamical system where a particle alternates between motion in a straight line and specular reflections with a boundary. When the particle hits the boundary it reflects from it without loss of speed.
Dynamical friction Dynamical friction is a term in astrophysics related to loss of momentum and kinetic energy of moving bodies through a gravitational interaction with surrounding matter in space. It is sometimes referred to as gravitational drag, and was first discussed in detail by Subrahmanyan Chandrasekhar in 1943.
Dynamical outer billiards Outer billiards is an emerging topic within dynamical systems that is related to inner billiards. However, while billiard theory is concerned with the continuous motion of a mass-point (or billiard ball) inside a Riemannian manifold with a piecewise smooth boundary (or billiard table), outer billiards moves the ball to the outside of the table and works in discrete time.
Dynamical Parallax The Dynamical Parallax is a method of measuring the distance to a visual binary star based on the estimated masses of the two components, the size of the orbit, and the period of their revolution around one another. The angular diameter of the orbit around one of the stars around each other is observed, together with their apparent brightness, and by applying Newton's generalisation of Kepler's Third Law (The squares of the orbital periods of planets are directly proportional to the cubes of the semi-major axis of the orbits) and the Mass-Luminosity relation, the distance to the binary star can be determined.
Dynamical simulation Dynamical simulation, in computational physics, is the simulation of systems of objects that are free to move, usually in three dimensions according to Newton's laws of dynamics, or approximations thereto. Dynamical simulation is used in computer animation to assist animators to produce realistic motion, in industrial design (for example to simulate crashes as an early step in crash testing), and in video games.
Dynamical symmetry breaking In condensed matter physics and particle physics, dynamical symmetry breaking is a form of spontaneous symmetry breaking which does not show up at the tree level. In many cases, it only shows up when we consider at least two particle irreducible actions and not one particle irreducible effective actions.
Dynamical system The dynamical system concept is a mathematical formalization for any fixed "rule" which describes the time dependence of a point's position in its ambient space. The mathematical models used to describe the swinging of a clock pendulum, the flow of water in a pipe, or the number of fish each spring in a lake are examples of dynamical systems.
Dynamical system (definition) The dynamical system concept is a mathematical formalization for any fixed "rule" which describes the time dependence of a point's position in its ambient space. The concept unifies very different types of such "rules" in mathematics: the different choices made for how time is measured and the special properties the ambient space may give an idea of the vastity of the the class of objects described by this concept.
Dynamical theory of diffraction The dynamical theory of diffraction describes the interaction of wave fields with a regular lattice. The wave fields traditionally described are X-rays, neutrons or electrons and the regular lattice atomic crystal structures or nanometer scaled multi-layers or self arranged systems.
Dynamical time scale The dynamical time scale is in general, the length of time over which changes in one part of a body can be communicated to the rest of that body. This is often related to the time taken for a system to move from one equilibrium state to another after a sudden change.
Dynamically Distributed Democracy Dynamically Distributed Democracy (DDD) uses a social network data structure as a means of a creating a 'holographic' model of the voting behavior of the whole group within any subset of the population that is actively participating in the group's voting process. The algorithm gracefully degrades as user participation wanes.
Dynamicism Dynamicism, also termed the dynamic hypothesis or the dynamic hypothesis in cognitive science or dynamic cognition, is a new approach in cognitive science exemplified by the work of philosopher Tim van Gelder. It argues that differential equations are more suited to modelling cognition than more traditional computer models.
Dynamics (mechanics) In physics, dynamics is the branch of classical mechanics that is concerned with the effects of forces on the motion of objects. The former distinguishes it from kinematics and the latter distinguishes it from statics.
Dynamics of Markovian Particles Dynamics of Markovian Particles (or DMP) is the basis of a theory for kinetics of particles in open heterogeneous systems. The theory can be looked upon as an application of the notion of stochastic process conceived as a physical entity; e.
Dynamin Dynamin is a GTPase thought to be responsible for endocytosis in the eukaryotic cell. Dynamins are principally involved in the scission of newly formed vesicles from the membrane of one cellular compartment and their targeting to, and fusion with, another compartment, both at the cell surface (particularly caveolae internalization) as well as at the GolgiHenley, J.
Dynamite Dynamite is an explosive based on the explosive potential of nitroglycerin using diatomaceous earth (Kieselguhr) as an adsorbent. It was invented by Swedish chemist and engineer Alfred Nobel in 1866 in KrĂĽmmel (Hamburg, Germany) and patented in 1867.
Dynamite (Jermaine Jackson album) Dynamite is an album by Jermaine Jackson. It features one of his famous hits, "Do What You Do", its B-Side "Tell Me I'm Not Dreamin'" (a duet with his brother Michael Jackson), as well as other participations from The Jacksons on "Escape from the Planet of the Ant Men" and Whitney Houston (the duet "Take Good Care Of My Heart").
Dynamite Cop Dynamite Cop (Dynamite Deka 2 in Japan) (1998) was published by Sega and initially released in arcades using the Sega Model 2 hardware. It was then ported to the Sega Dreamcast console and released in Japan, North America and Europe.
Dynamite Dux Dynamite Dux is a side-scrolling 'beat 'em up' arcade game, created and released Sega in 1988 for their successful Sega System 16 arcade board, the same board that was used for hits like Golden Axe and Altered Beast. It was a moderate success and a Sega Master System version was released a year later.
Dynamite Entertainment Dynamite Entertainment is a comic book publisher founded in 2005, first producing two Army of Darkness limited series published through Devil's Due Productions until self-publishing their titles later that year.
Dynamite gun A dynamite gun is any of a class of artillery pieces distinguished by their specialized operating mechanism and purpose: they use compressed air to propel an explosive projectile. Dynamite guns were in use for a brief period from the 1880s to the beginning of the twentieth century.
Dynamite Chicken Dynamite Chicken is a 1972 film involving Richard Pryor, and partly funded by and featuring John Lennon and Yoko Ono. It is a collection of subversive comedy sketches and routines relating to the peace movement.
Dynamite Idea Dynamite Idea was founded in 1995 and at that time specialised in graphic and web design. The company was initially commissioned by Rank to develop its website, and was then invited to submit a design for a new Fixed Odds game.
Dynamite Kid Thomas Wilton Billington was born the second of four children on December 5, 1958, in Golborne, Lancashire. He is considered one of the greatest pure wrestlers in the history of the industry and, along with his partner and cousin, Davey Boy Smith, comprised one of the most popular and highly-regarded wrestling tag teams during the mid-1980s when tag-team wrestling reached its zenith.
Dynamix (band) Dynamix is an electronic and dance music duo consisting of producers Jeremy Skaller and Eddie Cumana. Their first hit, "Don't Want Another Man" (featuring singer Tina Ann) hit #1 on the Hot Dance Music/Club Play chart in 2000.
Dynamix (Poznań) The "Dynamix" Sports and Recreation Center is a popular meeting place for young people in Poznań, Poland. It is located close to the city center and is easily accessible via different means of transport.
Dynamization Dynamization is a term used in computer science for the process of transforming a static data structure into a dynamic one. Although, static data structures may provide very good functionality and fast query, there are not very useful because of their inability to grow/shrink.
Dynamo (band) Dynamo is the name of the collaboration between Shay Almakayes of Dynamic and Junya Phantasm of Eskimo). As with their original projects, this collaboration has produced single tracks as well as an album of psychedelic trance music, often with high tempos and throbbing basslines.
Dynamo (sports society) Dinamo, also Dynamo, (, Belarusian: Дына́ма) was the oldest sports and physical training society of the Soviet Union, created in 1923. The name given to the society was supposed to mean "Power in Motion" from Greek: δύναμις; dynamis -power, and Latin: motio, -motion.
Dynamo (The Running Man) Dynamo is a major character from the 1987 film The Running Man the story of a sadistic game show produced by a future dystopic media-controlling government in which convicted criminals fight for their lives, pursued by an army of stalkers.
Dynamo Open Air The Dynamo Open Air is a festival in the Netherlands held (almost) every year since 1986. It has grown exponentially since then, and from a 5,000-person attendance in the parking lot of the Dynamo rock club, it had grown to over 110,000 attendees in 1995.
Dynaset A dynaset (short for dynamic set) is a set of data that is dynamically linked back to the database. Instead of having the query result stored in a temporary table, where the data cannot be updated directly by the user, the dynaset allows the user to view and update the data contained in the dynaset.
Dynastar Dynastar is a winter sports company based in the Chamonix valley, France. Founded in 1963, the name Dynastar was born when Les Plastiques Synthétiques, manufacturers of Starflex skis, collaborated with Dynamic on a new compound ski.
Dynastic Orders of Knighthood Dynastic Orders of Knighthood are a category of order belonging to the heraldic patrimony of a dynasty, often held by ancient right. They differ from Military orders and Religious orders and from Orders of Merit belonging to a particular State, having been instituted to reward personal services rendered to a sovereign, dynasty, or an ancient Family of princely rank.
Dynastic Race Theory The Dynastic Race Theory was the earliest thesis to attempt to explain how predynastic Egypt developed into the Pharonic monarchy. It argued that the presence of many Mesopotamian influences in Egypt during the late predynastic period and the apparently foreign graves in the Naqada II burials indicated an invasion of mesopotamians into Upper Egypt, who then conquered both Upper and Lower Egypt and founded the First Dynasty
Dynasty (band) Dynasty was a R&B band based in Los Angeles, California, created by producer and SOLAR Records label head Dick Griffey and Leon Sylvers III. The band was known for their clever dance/pop numbers during the late 1970’s and 1980’s.
Dynasty (sports) In sports, the term dynasty is often used to refer to a team that dominates their sport for a period of time. Such dominance is usually recognized only after a team has won many championships in a given time (3 in 4 years, 5 in 8 years, 7 in 12 years, etc.
Dynasty Tactics Dynasty Tactics (Sangokushi Senki, 三国志戦記) is a series of strategy games for the Sony Playstation 2. The games are based on Koei's action-oriented Dynasty Warriors series, as well as on the hard strategy Sangokushi/Romance of the Three Kingdoms series.
Dynasty Warriors Dynasty Warriors ( 真・三國無双:Shin Sangokumusou in Japan; literally meaning "True - Unrivaled (in the) Three Kingdoms") is a series of video games created by Koei based loosely around the Romance of the Three Kingdoms epic, and is a spinoff series of another Koei game Romance of the Three Kingdoms (Sangokushi in Japan). The series is often criticized for its repetitive gameplay, yet sale count is always extremely high among most games in the series.
Dynasty Warriors 3 Dynasty Warriors 3, Shin Sangokumusou 2 in Japan, is an Action Beat 'em up game developed by Omega Force and published by Koei. It is third in the Dynasty Warriors series in North America but is only second in the Shin Sangokumusou series in Japan.
Dynasty Warriors 5 Special Dynasty Warriors 5 Special Shin Sangoku Musou 4 Special This is another expansion to the well known game development company Koei, and - Omega Force. This game is scheduled for a release on the 22nd of December, 2006 on the Xbox 360 video game console in Japan.
Dynasty Warriors BB Dynasty Warriors BB is an installment of the Dynasty Warriors video game series, based on the novel Romance of the Three Kingdoms, which was released in Japan in 2006. The "BB" in the game's title stands for broadband.
Dynasty Wars is an arcade game that was released in 1989 by Capcom, based on a Japanese manga Tenchi wo Kurau. This is a one or two-player game where the player plays as one of four Chinese heroes on horseback from the Three Kingdoms period and try to kill hordes of enemies.
Dynasty: The Reunion Dynasty: The Reunion was a 1991 mini-series which reunited the characters from the popular primetime television soap opera Dynasty, which had aired on ABC from 1981 to 1989. The mini-series, like the series, revolved around the Carringtons, a wealthy oil family living in Denver, Colorado.
DynatOS The Dynatos Operating System (also known as DynatOS) is developed mostly in assembly language by Keith Kanios. Initial development focuses on support for x86 architecture-based computer systems (your basic Intel-based PC).
DynDNS Dynamic Network Services, Inc. is a network services company most well-known for its free DynDNS dynamic DNS service, which allows users to have a subdomain that points to a computer with regularly-changing IP addresses, such as those served by many consumer-level Internet service providers.
Dyne:bolic dyne:bolic is a LiveCD GNU/Linux distribution with a focus on multimedia production, and is distributed with a large assortment of applications for audio & video manipulation. Unlike many Linux distributions, dyne:bolic is based entirely on free software, and is a true GNU distribution.
Dynegy Dynegy () is a large operator of power plants and a player in the natural gas liquids business, based in Houston, Texas. Once known as The Natural Gas Clearinghouse, the company adopted the more vibrant "New Economy" branding in 1998.
Dynein Dynein is a motor protein (also called molecular motor or motor molecule) in cells which converts the chemical energy contained in ATP into the mechanical energy of movement. Dynein transports various cellular cargos by "walking" along cytoskeletal microtubules towards the minus-end of the microtuble, which is usually oriented towards the cell center.
Dynel Dynel is a trade name for a type synthetic fiber used in fibre reinforced plastic composite materials, especially for marine applications. A copolymer of acrylonitrile and vinyl chloride, it shares many properties with both polyacrylonitrile (high abrasion resistance, good tensile strength) and PVC (flame resistance).
Dynepo Dynepo is a form of pharmaceutical erythropoietin (EPO) under development as a pharmaceutical product by Shire Pharmaceuticals. The company expects to launch the product in Europe in 2006, although patents held by the American biotechnology company Amgen, Inc.
Dyngö Dyngö is a small island in the archipelago of Sweden's west coast, located in the province (landskap) of Bohuslän, near the village Fjällbacka. Formerly a fishing community, the island now has little or no perennial inhabitants, hosting instead a number of summer residents.
Dynna stone The Dynna Stone is a rune stone from the late Viking period. It is a roughly 3 meter tall, triangular slab of pinkish-red sandstone with runic inscriptions running down one of its edges, and with carved images on the front.
Dyophysite Dyophysite is a theological term used in understanding how the divine and human related in the person of Jesus Christ, an area of study known as Christology. The term come from the Greek and literally means "two natures.
Dypsis decaryi Dypsis decaryi is a palm tree commonly known as the Triangle palm native to the Madagascan rainforest. It can reach 15 meters in height although it is rarely found that tall outside of its native habitat due to it being relatively new to cultivation.
Dyrehavsbakken Dyrehavsbakken (English, "The Deer Park Hill"), referred to informally as Bakken ("The Hill"), is the world's oldest, intact, still-surviving amusement park. It is located in Klampenborg (Gentofte municipality), Denmark.
Dyrhólaey The small peninsula, or promontory, Dyrhólaey or Portland (120m) is located on the south coast of Iceland, not far from Vík í Mýrdal. It is a former island of volcanic origin which is also known by the Icelandic word eyja meaning island.
Dyrnwyn In Welsh mythology, Dyrnwyn or White-Hilt was a powerful sword belonging to Rhydderch Hael, one of the Three Generous Men of Britain mentioned in the Welsh Triads. It was sometimes referred to as "Dyrnwyn, gleddyf Rhydderch Hael" or "Dyrnwyn, the sword of Rhydderch").
Dyron Nix Dyron Patrick Nix (born February 11 1967, in Meridian, Mississippi) is an American former professional basketball player who was selected by the Charlotte Hornets in the 2nd round (29th overall) of the 1989 NBA Draft. Nix played only one year in the NBA for the Indiana Pacers during the 1989-90 season .
Dysart and Dundonald Pipe Band The Dysart and Dundonald Pipe Band has, in its long history, risen from a junior band in the tiny village of Dundonald, Fife to achieve rapid and constant success on the 1970s, winning championships in grades III and II and culminating in two winning performances at the World Pipe Band Championships in 1977 and 1978 in Grade I. Founded in 1929, the band has gone through many ups and down as well as name and leadership changes.
Dysart Burghs Dysart Burghs was a district of burghs constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1832. It represented the Fife burghs of Burntisland, Dysart, Kinghorn and Kirkcaldy.
Dysart et al, Ontario The United Townships of Dysart, Bruton, Clyde, Dudley, Eyre, Guilford, Harburn, Harcourt and Havelock (shortened to Dysart et al or Dysart and others) is a township in Haliburton County, Ontario, Canada. The townships were of the Canadian Land and Emigration Company.
Dysart, Fife Dysart is a small town in Fife, Scotland found on the northern shore of the Firth of Forth. Once of some importance as a trading burgh (16th century), Dysart is now counted as part of Kirkcaldy - originally a separate burgh.
Dysart, Queensland Dysart is a town in central Queensland, Australia, located in the Broadsound Shire. Established in 1973, Dysart serves as a service centre for the nearby Norwich Park and Saraji coal mines, as well as grazing properties in the district.
Dysautonomia Dysautonomia is any disease or malfunction of the autonomic nervous system. This includes postural orthostatic tachycardia syndrome (POTS), neurocardiogenic syncope, mitral valve prolapse dysautonomia, pure autonomic failure, multiple system atrophy (Shy-Drager syndrome), and a number of lesser-known disorders.
Dysbaric osteonecrosis Dysbaric osteonecrosis is the death of a portion of the bone that is thought to be caused by nitrogen embolization (blockage of the blood vessels by a bubble of nitrogen coming out of solution) in divers. Although the definitive pathologic process is poorly understood, there are several hypotheses:
Dyscrasia Dyscrasia (from Greek "Dyskrasia", meaning bad mixture), in Ancient Greek medicine, is the imbalance of the four humours, and was believed to be the direct cause of all disease. This is similar to the Asian concept of Yin and Yang; it was believed that imbalance of the two polarities caused ailment.
Dysderidae The family Dysderidae (woodlouse hunters, sowbug-eating spiders or cell spiders) are araneomorph spiders found primarily in Eurasia, although extending into North Africa, with very few species occurring in South America, and one (Dysdera crocata) introduced into many regions of the world.
Dysentery Dysentery is an illness (formerly known as the bloody flux or simply flux) involving severe diarrhea that is often associated with blood in the feces. It is caused by ingestion of food containing microorganisms, causing a disease in which inflammation of the intestines affect the body significantly.
DysEnchanted DysEnchanted is a short subject about seven storybook characters Cinderella, Snow White, Goldilocks, Sleeping Beauty, Alice In Wonderland, Dorothy and Little Red Riding Hood are in group therapy dishing and dealing with what comes after "happily ever after". When Clara, a New Jersey divorcee, joins the group she discovers that life is no fairy tale.
Dysferlin Dysferlin is a protein linked with skeletal muscle repair. A defect in the dysferlin gene, chromosome location 2p12-14, results in either of two types of muscular dystrophy; Miyoshi myopathy (MM) and Limb-girdle muscular dystrophy type 2B (LGMD2B).
Dysfunctional family A dysfunctional family is a family in which conflict, misbehaviour and even abuse on the part of individual members of the family occur continually, leading other members to accommodate such actions. Children sometimes grow up in such families with the understanding that such an arrangement is normal.
Dysfunctional Family Circus The Dysfunctional Family Circus is the name of several long-running parodies of the syndicated comic strip The Family Circus, featuring either Bil Keane's artwork with altered captions, or (less often) original artwork made to appear like the targeted strips. First distributed by mail and fax, by 1992 various versions of it began to appear on the World Wide Web.
Dysgenics Dysgenics is a term applied by some researchers to describe the hypothetical evolutionary weakening of a population of organisms relative to their environment, often due to relaxation of natural selection or the occurrence of negative selection. It is not a topic of significant scientific research, but appears occasionally in fiction and the popular media.
Dyskeratosis congenita Dyskeratosis congenita (DKC) is a rare progressive bone marrow failure syndrome characterized by cutaneous pigmentation, dystrophy of the nails, leukoplakia of the oral mucosa, continuous lacrimation due to atresia of the lacrimal ducts, often thrombocytopenia, anemia and in most cases testicular atrophy.
Dyskolos Dyskolos (literally meaning The Grouch but also known as The Misanthrope and Old Cantankerous) is an Ancient Greek comedy by Menander, the only one of his plays, or of the whole New Comedy, that has survived in complete form. It was first presented at the Lenaian festival in 317 BC, where it won Menander first prize.
Dysmetria Dysmetria (Greek: "difficult to measure") is a symptom exhibited by patients after cerebellar injury or injury to proprioceptive nerves (nerves that carry information about the position of joints and extremities).

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