Dual capacitor

Dual Survival

In finance, a dual currency deposit (DCD, also known as Dual Currency Instrument or Dual Currency Product) is a derivative instrument which combines a money market deposit with a currency option to provide a higher yield than that available for a standard deposit. There is a higher risk than with the latter - the depositor can receive less funds than originally deposited and in a different currency. So one could do a USD/JPY DCD depositing USD and receive JPY.

Dual fuel engine

Dual coincidence of wants

Dual enrollment

Dual of BCH is an independent source

In mathematics, a dual abelian variety can be defined from an abelian variety A, defined over a field K.

In matroid theory, the dual of a matroid M {\displaystyle M} is another matroid M ∗ {\displaystyle M^{\ast }} that has the same elements as M {\displaystyle M} , and in which a set is independent if and only if M {\displaystyle M} has a basis set disjoint from it.Matroid duals go back to the original paper by Hassler Whitney defining matroids.

April 2013

Dual X-ray Absortiometry and Laser

EJ Snyder

Dual diagnosis

Dual chartering refers to the system by which credit unions in the United States can be chartered under either of two governmental authorities; by either the federal government or by the state government. This system exists because of the Federal Credit Union Act, which Congress passed in 1934.Federally chartered credit unions (those with “Federal Credit Union” in their names) are chartered under the authority of the National Credit Union Administration. Federal credit unions insure their members share accounts through the National Credit Union Share Insurance Fund (NCUSIF), which guarantees the safety and soundness of the credit union.State chartered credit unions may exist in states that allow for the chartering of financial institutions under the authority of the state. Unlike federally chartered credit unions, state chartered credit unions in some states may choose to insure their assets through either the NCUSIF, or through private insurers such as American Share Insurance (ASI).

Dual Mono

Dual Process Theory (Moral Psychology)

Dual core processor

Dual language

Dual overhead rate

Dual control (politics)

In ethics, dual loyalty is loyalty to two separate interests that potentially entails a conflict of interest.A frequently cited example of the term "dual loyalty" is used in connection with physicians who must balance, on the one hand, the physician's loyalty to a patient (and/or the regulations that govern the physician-patient relationship), and on the other hand, the institution or country for which the physician serves.For example, a doctor who is asked by a government to assess a prisoner's fitness to withstand torture faces an enormous ethical dilemma because of the competing loyalties of the doctor to the state versus the physician's code of ethics and his/her commitment to a patient's human rights.

Dual Overhead Rate Recovery is used in construction contracting as a costing equation for bidding a project, costing an existing project or allocating corporate overhead to multiple divisions of construction work. It relies on banking information and regression analysis.It produces two rates, 1) Labor / Equipment Rate 2) Material / Subcontract Rate. This equation produces a percentage allocation of each class of cost. This is the cost of overhead to manage.

Dual narrative

Dual consciousness (neuroscience)

Dual engine

Dual code

Dual Shock 4

In mathematics, the dual module of a left (resp. right) module M over a ring R is the set of module homomorphisms from M to R with the pointwise right (resp. left) module structure.If the base ring R is a field, then a dual module is a dual vector space.Every module has a canonical homomorphism to the dual of its dual (called the double dual). A reflexive module is one for which the canonical homomorphism is an isomorphism. A torsionless module is one for which the canonical homomorphism is injective.

Dual object

In linear algebra, the dual numbers extend the real numbers by adjoining one new element ε with the property ε2 = 0 (ε is nilpotent). The collection of dual numbers forms a particular two-dimensional commutative unital associative algebra over the real numbers. Every dual number has the form z = a + bε where a and b are uniquely determined real numbers. The dual numbers can also be thought of as the exterior algebra of a one dimensional vector space; the general case of n dimensions leads to the Grassmann numbers.The algebra of dual numbers is a ring that is a local ring since the principal ideal generated by ε is its only maximal ideal. Dual numbers form the coefficients of dual quaternions.

Dual county (Irish: Contae déach) is a term used in Gaelic games to describe a GAA county that competes at a similar level in both hurling and gaelic football.

Freedom (FLP 40109)

Swerve Harris

Dual highway

Dual Unity

Dual head

Dual language is a form of education in which students are taught literacy and content in two languages. The majority of dual language programs in the United States teach in English and Spanish, although increasing numbers of programs use a partner language other than Spanish, such as Arabic, Chinese, French, Hawaiian, Japanese, or Korean.

Dual cone

Dual in-line pin package

In projective geometry, a dual curve of a given plane curve C is a curve in the dual projective plane consisting of the set of lines tangent to C. There is a map from a curve to its dual, sending each point to the point dual to its tangent line. If C is algebraic then so is its dual and the degree of the dual is known as the class of the original curve.

Dual energy X-ray absorptiometry

In mathematics, the dual bundle of a vector bundle π : E → X is a vector bundle π* : E* → X whose fibers are the dual spaces to the fibers of E. The dual bundle can be constructed using the associated bundle construction by taking the dual representation of the structure group.Specifically, given a local trivialization of E with transition functions tij, a local trivialization of E* is given by the same open cover of X with transition functions tij* = (tijT)−1 (the inverse of the transpose).

Dual n back

Dual Shock WAVE

Dual in-line package socket

The Greenhornes

Private

Dual link

Dual Transfer Mode (DTM) is a protocol based on the GSM standard that makes simultaneous transfer of Circuit switched (CS) voice and Packet switched (PS) data over the same radio channel (ARFCN) simpler. Without DTM, the mobile device must be capable of reception and transmission simultaneously (full-duplex) requiring complex and expensive circuitry in the mobile terminal. With DTM this requirement doesn't exist and makes the device implementation simpler and cheaper.

Dual Strike

Different types of railroad rolling stock have different couplers depending on the purpose and type of equipment being used and its intended destination. European rolling stock tend to use buffers and chain couplers while American rolling stock uses a Janney coupler or "knuckle coupler".

A dual education system combines apprenticeships in a company and vocational education at a vocational school in one course. This system is practiced in several countries, notably Germany, Austria, and Switzerland but also for some years now in South Korea.In the Duales Ausbildungssystem young German people can learn one of 356 (as of 2005) apprenticeship occupations (Ausbildungsberufe), such as Doctor's Assistant, Dispensing Optician or Oven Builder.

The idea of dual messiahs is the belief that there are either two messiahs or one messiah assuming the role of two. In the Dead Sea Scrolls, there is mention of dual messiahship. Later-Judaism talks about two messiahs — sons respectively of Joseph and of David.

Dual citizen

Dual independent bus

Dual mode bus

Dual career ladder

Dual isogeny

Dual grammatical number

Dual Protection

Dual channel

Dual layer

Dual license

Dual band

Dual matroid

Dual dates

Dual curve

Dual layer dvd

Dual booting

Dual Transfer Mode (DTM) is a protocol based on the GSM standard that makes simultaneous transfer of Circuit switched (CS) voice and Packet switched (PS) data over the same radio channel (ARFCN) simpler. Without DTM, the mobile device must be capable of reception and transmission simultaneously (full-duplex) requiring complex and expensive circuitry in the mobile terminal. With DTM this requirement doesn't exist and makes the device implementation simpler and cheaper. DTM is a 3GPP feature introduced in R4 of the specification series.Traditionally, GSM/EDGE device with simultaneous CS/PS capability was supported, but only for Class A GPRS devices. Due to the fact that the uplink and downlink timeslot usage was not co-ordinated between the voice and data connections, the class A devices in practice had to be capable of transmit and reception simultaneously. With DTM, a mobile phone capable can be engaged in both CS and PS call and simultaneous voice and packet data connection in GSM/EDGE networks with the lower Class B requirements thus having a simpler half duplex circuitry due to co-ordination of the timeslot allocations in uplink and downlink for both voice and data. Older devices in Class B without DTM capability could still receive CS calls while having an active PS session. With these devices, the PS connection is put on hold (i.e. no traffic) for the duration of the voice call. After the voice call terminates, the data connection resumes data transfer.One common class implemented by mobile phone vendors is the DTM Multislot Class 11. For example, the technical specification of Nokia N95 states a speed of DL/UL 177.6/118.4 kbit/s. In 2010, devices with DTM multislot class 32 such as Nokia N900 are available.A simultaneous voice and data call implies that a data call might start on an ongoing voice call or a voice call might start on an ongoing data call.In case a voice is started on a mobile phone that is in Packet Transfer Mode(i.e. in a data call), the procedure takes place in three stages. The TBF's (Data "Call") are released. A dedicated connection for the voice call is initiated. Finally, the mobile phone uses DTM for re-establishing the data connection.3GPP Release 6 specifies the Enhanced DTM CS Establishment and Enhanced DTM CS Release procedures to enable smooth transitions between the packet transfer and dual transfer modes, without having to release the TBF's. This enables continuous data transfer also when calls are set up and released, as well as reduced load on the common control channels of the GSM network. This technology is not yet supported by any operator.Starting late 2009 or early 2010, Vodafone has added DTM support in its network in the UK. In addition to enabling simultaneous call and data transfer in 2G network, DTM -capable network can also secure that incoming calls are received by devices that are transferring packet data (depending on the network implementation, this can also apply to devices that do not support the DTM feature).

Dual listing

In mathematics, the dual module of a left (resp. right) module M over a ring R is the set of module homomorphisms from M to R with the pointwise right (resp. left) module structure.If the base ring R is a field, then a dual module is a dual vector space.Every module has a canonical homomorphism to the dual of its dual (called the double dual). A reflexive module is one for which the canonical homomorphism is an isomorphism.

Dual credit

The dual labour market (also referred to as the segmented labour market) theory aims at introducing a broader range of factors into economic research, such as institutional aspects, race and gender. It divides the economy into two parts, called the "primary" and "secondary" sectors. The distinction may also be drawn between formal/informal sectors or sectors with high/low value-added.A broader concept is that of labor market segmentation.

Dual Polarization Interferometry

Dual graph

Dual Sector Model

Dual layer DVD

Dual naming is a policy for the naming of geographical landmarks, in which an official name is adopted that combines two previous names.

Dual Peppy

Dual analog (disambiguation)

Dual abelian variety

Dual control theory

Dual education system

Dual Plover is a pioneering independent Australian record label, founded in Sydney in 1996, notable for discovering some of the most enigmatic artists in experimental music.Founded by Lucas Abela and Swerve Harris, Dual Plover are concerned with releasing audio works by people whose work is outside of current trends, be it pop trends or the so-called avant-garde music trends.

Dual in Detroit

Dual analog control

Dual Sympathy

Dual Stress Liner

Dual State Monument

Dipole graph.svg

Dual Pentium

Dual Survival (season 4)

Dual listed company

Dual mode mobiles refer to mobile phones that are compatible with more than one form of data transmission or network.

Dual basis

Dual Stack

Dual mode propulsion rocket

Dual orexin receptor antagonist

Dual elliptic curve deterministic random bit generator

Dual monitor

Dual module

Dual Mono is the third album by The Greenhornes, released on October 15, 2002. It consists of 12 songs, 11 of which were written by the Greenhornes, and one by Bob Wackett. It received positive reviews from Allmusic, garnering 4.5 stars out of five.

Dual Peppy (foaled 1992) is a Quarter Horse performance horse and sire born in Tulare, California and bred by Greg and Laura Ward.

Is this current use at the time of the study?

Dual cycle

Dual control theory is a branch of control theory that deals with the control of systems whose characteristics are initially unknown. It is called dual because in controlling such a system the controller's objectives are twofold:(1) Action: To control the system as well as possible based on current system knowledge(2) Investigation: To experiment with the system so as to learn about its behavior and control it better in the future.These two objectives may be partly in conflict.Dual control theory was developed by Alexander Aronovich Fel'dbaum in 1960. He showed that in principle the optimal solution can be found by dynamic programming, but this is often impractical; as a result a number of methods for designing sub-optimal dual controllers have been devised.

Dual Stage to Orbit

Dual Phase Steels Magnetism Modeling Program

Dual licensed

Dual Shock Wave Championship

Lucas Abela

Dual display

Dual coding theories

Dual disorder

Dual oxidase 2, also known as DUOX2 or ThOX2 (for thyroid oxidase) is an enzyme which in humans is encoded by the DUOX2 gene. Dual oxidase is an enzyme that was first identified in the mammalian thyroid gland. In humans, two isoforms are found; hDUOX1 and hDUOX2 (this enzyme). The protein location is not exclusive to thyroid tissue; hDUOX1 is prominent in airway epithelial cells and hDUOX2 in the salivary glands and gastrointestinal tract.

Dual Mono.jpg

Dual license model (open source)

The dual labour market (also referred to as the segmented labour market) theory aims at introducing a broader range of factors into economic research, such as institutional aspects, race and gender. It divides the economy into two parts, called the "primary" and "secondary" sectors. The distinction may also be drawn between formal/informal sectors or sectors with high/low value-added.A broader concept is that of labor market segmentation. While the word "dual" implies a division into two parallel markets, segmentation in its broadest sense may involve several distinct labor markets.In a dual labour market, a secondary sector is characterized by short-term employment relationships, little or no prospect of internal promotion, and the determination of wages primarily by market forces. In terms of occupations, it consists primarily of low or unskilled jobs, whether they are blue-collar (manual labour), white-collar (e.g. filing clerks), or service industry (e.g. waiters). These jobs are linked by the fact that they are characterized by "low skill levels, low earnings, easy entry, job impermanence, and low returns to education or experience."The informal economy consists of labour that is often "pay-under-the-table". This market tends to attract the poor and a disproportionate number of minority group members.The dual labour market theory generally ignores the micro-level decisions such as an individual’s cost-benefit analysis. Instead, it focuses on immigration as a “natural consequence of economic globalization and market penetration across national boundaries” (Massey, et al., 1993, p. 432). In whole, it is not concerned with individual decisions to migrate but focuses on what pulls them, as a collective group, to migrate. It argues that international migration starts from the labour demands of modern civilization.

Dual closure

Dual cone and polar cone are closely related concepts in convex analysis, a branch of mathematics.

Dual citizenship

Dual number

Arkansas#USA

Dual format

Dual overhead camshaft

Dual carriageway

Dual format is a technique used to allow two completely different systems software to reside on the same disk.The term was used on the Amiga and Atari ST platform to indicate that the disk could be inserted into either machine and it would still boot and run. The secret behind this lies in a very special layout of the first track of the disk which contained an Amiga and an Atari ST bootsector at the same time by fooling the operating system to think that the track resolved into the format it expected. Only a few games used that technique. Three of them were produced by Eclipse Software Design (Stone Age, Monster Business and Lethal Xcess). ST/Amiga Format magazine also used the technique for their coverdisks.Amiga and PC dual-format games also existed, like the budget version of Rick Dangerous.The game 3D Pool even contained a Tri-format disk, which contained the Amiga, Atari ST and PC versions of the game.Most dual and tri-format disks were implemented using technology developed by Rob Northen Computing.Recently, "dual format" has come to identify software which distributed on a single disk which includes both Windows and Macintosh versions of its installation program.A list of a few of the Dual Format floppy disk titles:Action Fighter (Amiga/PC dual-format disk)Lethal Xcess - Wings of Death II (Amiga/Atari ST dual-format disks)Monster Business (Amiga/Atari ST dual-format disk)Populous: The Promised Lands (Amiga/Atari ST dual-format disk)Rick Dangerous Kixx (Amiga/PC dual-format disk)Rick Dangerous 2 Kixx (Amiga/PC dual-format disk)Stone Age (Amiga/Atari ST dual-format disk)Street Fighter (Amiga/PC dual-format disk)StarGlider 2 (Amiga/Atari ST dual-format disk)3D Pool (Amiga/Atari ST/PC tri-format disk)Stunt Car Racer Kixx (Amiga/PC dual-format disk)Bionic Commando Kixx (Amiga/PC dual-format disk)Carrier Command Kixx (Amiga/PC dual-format disk)Blasteroids Kixx (Amiga//PC dual-format disk)E-Motion Kixx (Amiga//PC dual-format disk)Indiana Jones and the Last Crusade Action Kixx (Amiga//PC dual-format disk)Out Run Kixx (Amiga/PC dual-format disk)World Class Leader Board Kixx (Amiga/PC dual-format disk)International Soccer Challenge Kixx (Amiga/PC dual-format disk)MicroProse Soccer Kixx (Amiga/PC dual-format disk)

Dual oxidase 1, also known as DUOX1 or ThOX1 (for thyroid oxidase), is an enzyme which in humans is encoded by the DUOX1 gene. DUOX1 was first identified in the mammalian thyroid gland. In humans, two isoforms are found; hDUOX1 and hDUOX2. Human DUOX protein localization is not exclusive to thyroid tissue; hDUOX1 is prominent in airway epithelial cells and hDUOX2 in the salivary glands and gastrointestinal tract.

Dual Survival (season 2)

Dual modules

Dual Stage To Orbit

Dual income, no kids

Dual dating is the practice, in historical materials, to indicate some dates with what appears to be duplicate, or excessive digits, sometimes separated by a hyphen or a slash. This is also often referred to as double dating. The need for double dating arose from the transition from an older calendar to a newer one.

Dual impedance and dual network are terms used in electronic network analysis. The dual of an impedance Z {\displaystyle Z} is its reciprocal, or algebraic inverse Z ′ = 1 Z {\displaystyle Z'={\frac {1}{Z}}} . For this reason the dual impedance is also called the inverse impedance.

Dual licensing

Dual check valve

Dual mode transit

Dual Overhead Cam

Dual identity (disambiguation)

Dual overhead cam

Dual monarchy of England and France

Dual control is the situation in which a national government agrees to share control of its country with representatives of foreign governments, called controllers, because it is indebted to them.The term dual control describe Egypt's indebtment to European powers in the 19th century and the resulting control of foreign governments over the Egyptian government, which finally caused Egypt to relinquish control to a cabinet largely composed of foreigners.

Dual Tower 2

Dual aspect monism

The Dual State Monument is a monument located on the border of Union County, Arkansas, and Union Parish, Louisiana. The monument was built in 1931 to mark the centennial of the establishment of the Arkansas-Louisiana state line. It also marks the birthplace of Arkansas governor George Washington Donaghey, who commissioned the monument after his retirement. The monument features Art Deco bas-relief carvings on its east and west sides.

Dual coding theory

The Dual Fluid Reactor (DFR) is the project of a private German research institute, the Institute for Solid-State Nuclear Physics, combining the advantages of the molten salt reactor with the ones of the liquid metal cooled reactor: The fuel is in a liquid metal or molten chloride salt solution, while the cooling is provided by liquid lead. As a fast breeder reactor, the DFR can burn both natural uranium and thorium, as well as recycle nuclear waste.

Dual citizens

Dual control (disambiguation)

Dual modular redundancy

Dual nationality

Dual executive system

In telecommunication, the term dual access has the following meanings:The connection of a user to two switching centers by separate access lines using a single message routing indicator or telephone number.In satellite communications, the transmission of two carriers simultaneously through a single communication satellite repeater.Also, network hardware company D-Link has named technology which allows two simultaneous connections over one cable, for example 1) Internet and 2) provider's local FTP or game servers or IPTV data flow.

Jeff Zausch

A dual headphone adapter, also known as a "headphone splitter" or "audio jack splitter", is a device that allows two headphones to be connected through to one audio jack. They can be used to listen to audio through multiple audio input devices, such as headphones on devices such as an MP3 player, CD player, modern Computer with audio-out compatibility (such as a headphone socket) or boombox. Although earbuds, a type of headphone design, can be shared with a friend (with one "bud" in another's ear), a dual headphone adapter can be more practical. Dual headphone adapters can purchased at various audio and electronic stores. Headphone adapters can be used by inserting a 3.5mm Audio jack plug into the headphone jack.

Dual hemipolyhedra

Dual loyalty (ethics)

Dual cit

United States

The dual income tax system levies a proportional tax rate on all net income (capital, wage and pension income less deductions) combined with progressive tax rates on gross labour and pension income. This implies that labour income is taxed at higher rates than capital income, and that the value of the tax allowances is independent of the income level.

Dual beam oscilloscope

Dual decomposition

Dual Phase Steels Magnetism Modeling

Dual ball joint suspension

Dual board

English

Dual function

right

Dual key

The Dual Vee Model builds on the V-model to cleanly depict the complexity associated with designing and developing systems. In systems engineering it defines a uniform procedure for product or project development. The model depicts concurrent development of a system's architecture as one Vee with each entity of that architecture as another Vee that intersects the architecture Vee. This clearly shows interactions and sequences in developing a complex system and a system of systems.

Dual barrel

Dual numbers

Dual Sector model

Dual Screen Lite

Dual offence

Dual chartering refers to the system by which credit unions in the United States can be chartered under either of two governmental authorities; by either the federal government or by the state government. This system exists because of the Federal Credit Union Act, which Congress passed in 1934.Federally chartered credit unions (those with “Federal Credit Union” in their names) are chartered under the authority of the National Credit Union Administration.

Dual core chip

Dual hypergraph

Dual modular redundant

Dual Survival is a United States reality cable television series that airs on the Discovery Channel. The show features a pair of survival experts in predetermined scenarios while in challenging environments.For the first two seasons, the show featured the differing outdoor survival philosophies and skills of Cody Lundin, a naturalist and primitive-skills expert who runs the Aboriginal Living Skills School in Arizona and Dave Canterbury, a military-trained survival instructor who runs the Pathfinder Training School in Ohio. Beginning with the third season, Canterbury was replaced with Joseph "Joe" Teti, and in Season 4 Matt Graham replaced Lundin; Teti and Graham remained with the show through Season 6. Season 7 features Grady Powell, an ex-U.S. Army Green Beret, who replaced Joseph Teti, and Bill McConnell, a wilderness survivalist, who replaced Matt Graham.

Dual consciousness is a concept developed by Frantz Fanon in his book Black Skins, White Masks. It deals with the nature of the colonized subject, and the way in which they must simultaneously embrace two different cultural identities.It is mostly used in discussions of post-colonialism, but is also important to other fields within critical theory.For a more complete understanding- the original concept "double consciousness" was used and explained in depth years before by W. E. B. Du Bois.

Dual loyalties

Dual Peppy (horse)

Season 9

Dual Memory

A dual carriageway (North American English: divided highway) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation (North American English: median). Roads with two or more carriageways which are designed to higher standards with controlled access are generally classed as motorways, freeways, etc., rather than dual carriageways.A road without a central reservation is a single carriageway (North American English: undivided highway) regardless of the number of lanes. Dual carriageways have improved road traffic safety over single carriageways and typically have higher speed limits as a result. In some places, express lanes and local/collector lanes are used within a local-express-lane system to provide more capacity and to smooth traffic flows for longer-distance travel.

Dual channel DDR

Dual containment

Dual of a C*-algebra

Dual mode hybrid

Dual consciousness is a theoretical concept in neuroscience. It is proposed that it is possible that a person may develop two separate conscious entities within his/her one brain after undergoing a corpus callosotomy.

In mathematics, the dual bundle of a vector bundle π : E → X is a vector bundle π* : E* → X whose fibers are the dual spaces to the fibers of E. The dual bundle can be constructed using the associated bundle construction by taking the dual representation of the structure group.Specifically, given a local trivialization of E with transition functions tij, a local trivialization of E* is given by the same open cover of X with transition functions tij* = (tijT)−1 (the inverse of the transpose). The dual bundle E* is then constructed using the fiber bundle construction theorem.For example, the dual to the tangent bundle of a differentiable manifold is the cotangent bundle.If the base space X is paracompact and Hausdorff then a real, finite-rank vector bundle E and its dual E* are isomorphic as vector bundles. However, just as for vector spaces, there is no canonical choice of isomorphism unless E is equipped with an inner product. This is not true in the case of complex vector bundles, for example the tautological line bundle over the Riemann sphere is not isomorphic to its dual.

Dual coupling

In category theory, a branch of mathematics, it is possible to define a concept of dual object generalizing the concept of dual space in linear algebra.A category in which each object has a dual is called autonomous or rigid.

Dual band blade antenna

is dual to the Heawood graph in the torus

Dual oxidase 1

Dual control stand

present

Dual control theory is a branch of control theory that deals with the control of systems whose characteristics are initially unknown.

Dual Switching System

Dual messiahs

In linear algebra, the dual numbers extend the real numbers by adjoining one new element ε with the property ε2 = 0 (ε is nilpotent). The collection of dual numbers forms a particular two-dimensional commutative unital associative algebra over the real numbers. Every dual number has the form z = a + bε where a and b are uniquely determined real numbers.

Dual bridges

Dual control stand refers to the North American practice of some railroads to have two control stands (a "control stand" is a locomotive subsystem which integrates all engine and brake functional controls within the operational radius of the locomotive engineer's left forearm from his customary seating position, facing forward at all times) in the cab of a hood unit locomotive, one on either side facing opposite directions to allow operation either long hood or short hood forward at all times). This practice was largely used by the Norfolk and Western, as well as Southern Railway, during the 1960s and 1970s, but could also be found on select Erie Lackawanna, Reading, Penn Central and Western Pacific locomotives during the same time periodThe rationale for having two control stands was to put the engineer on the proper side of the locomotive regardless of the direction of travel; this would reduce the need to turn the locomotive at a terminal.Present railroad practice is to operate two or more locomotives in "multiple unit" configurations, with the "front" locomotive pointing "front", and with the rear-most, or all rear locomotives facing "rear". This practice eliminates "turning of equipment".

Dual consciousness is a concept developed by Frantz Fanon in his book Black Skins, White Masks. It deals with the nature of the colonized subject, and the way in which they must simultaneously embrace two different cultural identities.It is mostly used in discussions of post-colonialism, but is also important to other fields within critical theory.For a more complete understanding- the original concept "double consciousness" was used and explained in depth years before by W. E. B. Du Bois. Here “double consciousnesses,” which according to Du Bois means a “sense of always looking at one’s self through the eyes of others”.References----Edles, Laura Desfor, and Scott Appelrouth. Sociological Theory in the Classical Era: Text and Readings. Thousand Oaks, CA: Pine Forge Press, 2005.

Dual Plover

Dual national

Miss Dual Doc

Dual Shock

Docs Remedy

Noise

Dual disorders pathology

Dual lattice

Dual basis in a field extension

Art Deco

none

Dual impedance

Dual aspect

Dual code theory

Dual microphone

Dual accreditation is the practice in diplomacy of a country granting two separate responsibilities to a single diplomat. One prominent form of dual accreditation is for a diplomat to serve as the ambassador to two countries concurrently. For example, Luxembourg's Ambassador to the United States is also the non-resident Ambassador to Canada and the non-resident Ambassador to Mexico.Such an Ambassador may sometimes be called Ambassador-at-Large.

Dual diagnosis (also called co-occurring disorders, COD) is the condition of suffering from a mental illness and a comorbid substance abuse problem. There is considerable debate surrounding the appropriateness of using a single category for a heterogeneous group of individuals with complex needs and a varied range of problems. The concept can be used broadly, for example depression and alcoholism, or it can be restricted to specify severe mental illness (e.g. psychosis, schizophrenia) and substance misuse disorder (e.g. cannabis abuse), or a person who has a milder mental illness and a drug dependency, such as panic disorder or generalized anxiety disorder and is dependent on opioids. Diagnosing a primary psychiatric illness in substance abusers is challenging as drug abuse itself often induces psychiatric symptoms, thus making it necessary to differentiate between substance induced and pre-existing mental illness.Those with co-occurring disorders face complex challenges. They have increased rates of relapse, hospitalization, homelessness, and HIV and hepatitis C infection compared to those with either mental or substance use disorders alone. The cause of co-occurring disorders is unknown, although there are several theories.

Bo McGlone

Dual carbon battery
A dual carbon battery is one that uses carbon for both the cathode and the anode.

Dual N-back

Dual disc

Dual of C*-algebra

East Grand Blues

Dual logarithmic

Dual containment was an official United States foreign policy aimed at containing Iraq and Iran, Israel's and the United States' two most important strategic adversaries in the Middle East. It was first outlined in May 1993 by Martin Indyk at the Washington Institute for Near East Policy and officially announced on February 24, 1994 at a symposium of the Middle East Policy Council by Indyk, then the senior director for Middle East Affairs of the National Security Council (NSC).

Dual Vee

Dual form

NRCHA Superior Cow Horse Award

Dual clutch transmission

Dual Polarisation Interferometry

Dual Survival (season 1)

Titelblatt Luebecker Frieden Selection Old and New Style date.png

Dual camera

Greg and Laura Ward

A certain family of BCH codes have a particularly useful property, which is that treated as linear operators, their dual operators turns their input into an ℓ {\displaystyle \ell } -wise independent source. That is, the set of vectors from the input vector space are mapped to an ℓ {\displaystyle \ell } -wise independent source.

In coding theory, the dual code of a linear code C ⊂ F q n {\displaystyle C\subset \mathbb {F} _{q}^{n}} is the linear code defined by C ⊥ = { x ∈ F q n ∣ ⟨ x , c ⟩ = 0 ∀ c ∈ C } {\displaystyle C^{\perp }=\{x\in \mathbb {F} _{q}^{n}\mid \langle x,c\rangle =0\;\forall c\in C\}} where ⟨ x , c ⟩ = ∑ i = 1 n x i c i {\displaystyle \langle x,c\rangle =\sum _{i=1}^{n}x_{i}c_{i}} is a scalar product.

Dual in-line package

The dual monarchy of England and France existed during the latter phase of the Hundred Years' War when Charles VII of France and Henry VI of England disputed the succession to the throne of France. It commenced on 21 October 1422 upon the death of King Charles VI of France, who had signed the Treaty of Troyes which gave the French crown to his son-in-law Henry V of England and Henry's heirs. It excluded King Charles's son, the Dauphin Charles, who by right of primogeniture was the heir to the Kingdom of France. Although the Treaty was ratified by the Estates-General of France, the act was a contravention of the French law of succession which decreed that the French crown could not be alienated. Henry VI, son of Henry V, became king of both England and France and was recognized only by the English and Burgundians until 1435 as King Henry II of France. He was crowned King of France on 16 December 1431.In practical terms, King Henry's de jure sovereignty and legitimacy as king of France was only recognised in the English and allied-controlled territories of France which were under the domination of his French regency council, while the Dauphin ruled as King of France in part of the realm south of the Loire.The Dauphin was crowned as King Charles VII of France at Reims on 17 July 1429, largely through the martial efforts of Joan of Arc, who believed it was her mission to free France from the English and to have the Dauphin Charles crowned at Reims. In 1435, the Duke of Burgundy, released from his obligations to Henry VI by a papal legate, recognised Charles VII as the rightful king of France. The defection of this powerful French noble marked the end of Henry's de facto reign over France. The Dual monarchy came to an end with the final victory of the French at the Battle of Castillon on 17 July 1453, thus bringing the Hundred Years' War to a conclusion. The English were expelled from all of the territories which they had controlled in France, with the sole exception of Calais. Charles VII had thus established himself as the undisputed king of almost all of France.

Dual n-back

Dual naming

Dual VVT-i

Dual State

Dual Shock 2

Dual cone and polar cone

Dual factor authentication

Dual licencing

Dual Phase Evolution

Dual county (Irish: Contae déach) is a term used in Gaelic games to describe a GAA county that competes at a similar level in both hurling and gaelic football. For example, Cork and Dublin play in Division 1 in both the NHL and NFL, while Laois compete in the second tier of both competitions.Generally recognised dual counties include:CarlowCorkDublinGalwayLaoisOffalyWexfordOnly Tipperary and Cork have won both premier men's competitions, the All-Ireland Senior Hurling and All-Ireland Senior Football championships in the same year. Tipperary won both in 1895 and 1900, while Cork won both in 1890 and 1990. Tipperary would today be regarded as primarily a hurling county having not won a major senior football title since 1935 but won the All-Ireland Minor Football Championship in 2011. Dublin have made improvements in hurling since the turn of the millennium, winning the 2011 National Hurling League and the 2013 Leinster Senior Hurling Championship, and are now considered to be a dual county.Dual player is a similar phrase used to describe players who play both sports.

List_of_Dual_Survival_episodes

Dual core

The Dual State Monument is a monument located on the border of Union County, Arkansas, and Union Parish, Louisiana. The monument was built in 1931 to mark the centennial of the establishment of the Arkansas-Louisiana state line. It also marks the birthplace of Arkansas governor George Washington Donaghey, who commissioned the monument after his retirement. The monument features Art Deco bas-relief carvings on its east and west sides. The east side features popular modes of transportation in 1831, including a steamboat, stagecoach, and covered wagon. The west side displays a locomotive, automobile, and airplane to represent the modes of transportation common in 1931. The monument was the first Art Deco-inspired sculpture erected in Arkansas.The monument was added to the National Register of Historic Places on September 11, 2000.

In the mathematical discipline of graph theory, the dual graph of a plane graph G is a graph that has a vertex for each face of G. The dual graph has an edge whenever two faces of G are separated from each other by an edge, and a self-loop when the same face appears on both sides of an edge. Thus, each edge e of G has a corresponding dual edge, whose endpoints are the dual vertices corresponding to the faces on either side of e. The definition of the dual depends on the choice of embedding of the graph G, so it is a property of plane graphs (graphs that are already embedded in the plane) rather than planar graphs (graphs that may be embedded but for which the embedding is not yet known). For planar graphs generally, there may be multiple dual graphs, depending on the choice of planar embedding of the graph.Historically, the first form of graph duality to be recognized was the association of the Platonic solids into pairs of dual polyhedra. Graph duality is a topological generalization of the geometric concepts of dual polyhedra and dual tessellations, and is in turn generalized algebraically by the concept of a dual matroid. Variations of planar graph duality include a version of duality for directed graphs, and duality for graphs embedded onto non-planar two-dimensional surfaces. However, these notions of dual graphs should not be confused with a different notion, the edge-to-vertex dual or line graph of a graph.The term "dual" is used because the property of being a dual graph is symmetric, meaning that if H is a dual of a connected graph G, then G is a dual of H. When discussing the dual of a graph G, the graph G itself may be referred to as the "primal graph". Many other graph properties and structures may be translated into other natural properties and structures of the dual. For instance, cycles are dual to cuts, spanning trees are dual to the complements of spanning trees, and simple graphs (without parallel edges or self-loops) are dual to 3-edge-connected graphs.Graph duality can help explain the structure of mazes and of drainage basins. Dual graphs have also been applied in computer vision, computational geometry, mesh generation, and the design of integrated circuits.

Dual enrolment

Dual citizenship in South Korea

The Dual Fluid Reactor (DFR) is the project of a private German research institute, the Institute for Solid-State Nuclear Physics, combining the advantages of the molten salt reactor with the ones of the liquid metal cooled reactor: The fuel is in a liquid metal or molten chloride salt solution, while the cooling is provided by liquid lead. As a fast breeder reactor, the DFR can burn both natural uranium and thorium, as well as recycle nuclear waste. Due to the high thermal conductivity of the molten metal, the DFR is an inherently safe reactor (the decay heat can be removed passively).The reactor design won the vote in the German GreenTec Awards of 2013 but the award committee presiding over the awards changed the rules to exclude all nuclear designs before announcing the winner, the DFR participants successfully sued in response to this.A conceptual predecessor of the DFR was the UK 1970s lead-cooled fast spectrum MSR (MSFR), which was undergoing a design path inclusive of the fissile fuel likewise dissolved in a molten chloride salt, with experimental work undertaken over 1968-73. Funding ceased in 1974.

Dual labour market

Dual consciousness is a theoretical concept in neuroscience. It is proposed that it is possible that a person may develop two separate conscious entities within his/her one brain after undergoing a corpus callosotomy. The idea first began circulating in the neuroscience community after some split-brain patients exhibited the alien hand syndrome, which led some scientists to believe that there must be two separate consciousnesses within the brain’s left and right hemispheres in competition with one another once the corpus callosum is severed.The idea of dual consciousness has caused controversy in the neuroscience community, although there is no conclusive evidence of its existence.

Dual inheritance theory of cultural evolution

Dual flat no leads

Dual Survival (2010 season)

Dual Survival Brazil

Dual Survival (season 6)

A dipole graph

Dual Power

A certain family of BCH codes have a particularly useful property, which is that treated as linear operators, their dual operators turns their input into an ℓ {\displaystyle \ell } -wise independent source. That is, the set of vectors from the input vector space are mapped to an ℓ {\displaystyle \ell } -wise independent source. The proof of this fact below as the following Lemma and Corollary is useful in derandomizing the algorithm for a 1 − 2 − ℓ {\displaystyle 1-2^{-\ell }} -approximation to MAXEkSAT.

Dual analog

Dual functor

Dual credit enrollment

Dual access

Dual consciousness

Dual in-line socket

Dual Sport

Charlie Corwin, Brian Nashel, French Horwitz

Dual clutch gearbox

Dual honours

Dual Screen

Alan Bates

Josh James
Bill McConnell

Dual mode handset

is dual to the Petersen graph in the projective plane

Dual mode mobile

A cycle graph

Live

Dual of tridiminished icosahedron

Dual brain theory

Dual accreditation

Dual Scan, also known as dual-scan supertwist nematic or DSTN, is an LCD technology in which a screen is divided into two sections which are simultaneously refreshed giving faster refresh rate than traditional passive matrix screens. It is an improved form of supertwist nematic display that offers low power consumption but inferior sharpness and brightness compared to TFT screens. For several years (late '90s to early 2000s), TFT screens were only found in high-end laptops due to them being more expensive and lower-end laptops offering DSTN screens only. This was at a time when the screen was often the most expensive component of laptops. The price difference between a laptop with DSTN and one with TFT could easily be $400 or more. However, TFT gradually became cheaper and has essentially captured the entire market.DSTN display quality is poor compared to TFT, with visible noise, smearing, much lower contrast and slow response. Such screens are unsuitable for viewing movies.

Dual logarithmic plot

Dual Use Upper Stage

Dual Survival (season 5)

In the United States, dual enrollment (DE) programs allow students to be enrolled in two separate, academically related institutions. Generally, it refers to high school students taking college or university courses. Less commonly, it may refer to any individual who is participating in two related programs.

Dual Monarchy

Dual overhead cams

Dual carriage road

Dual meet

Dual currency deposit

Dual Presidency Theory

Dual Scan, also known as dual-scan supertwist nematic or DSTN, is an LCD technology in which a screen is divided into two sections which are simultaneously refreshed giving faster refresh rate than traditional passive matrix screens. It is an improved form of supertwist nematic display that offers low power consumption but inferior sharpness and brightness compared to TFT screens.

Dual control

Dual Tower 1

Dual kingship

The dual monarchy of England and France existed during the latter phase of the Hundred Years' War when Charles VII of France and Henry VI of England disputed the succession to the throne of France. It commenced on 21 October 1422 upon the death of King Charles VI of France, who had signed the Treaty of Troyes which gave the French crown to his son-in-law Henry V of England and Henry's heirs.

The dual income tax system levies a proportional tax rate on all net income (capital, wage and pension income less deductions) combined with progressive tax rates on gross labour and pension income. This implies that labour income is taxed at higher rates than capital income, and that the value of the tax allowances is independent of the income level. The dual income tax system deliberately moves away from the comprehensive income tax (global income tax) system which taxes all or most (cash) income less deductions (net income) according to the same rate schedule. The dual income tax was first implemented in the four Nordic countries (Denmark, Finland, Norway and Sweden) through a number of tax reforms from 1987 to 1993. The dual income tax is therefore also known as the Nordic tax system or the Nordic Dual Income Tax.

Dual degree

Dual Survival (2013 season)

Dual Scan

Dual labour markets

Dual Plover is a pioneering independent Australian record label, founded in Sydney in 1996, notable for discovering some of the most enigmatic artists in experimental music.Founded by Lucas Abela and Swerve Harris, Dual Plover are concerned with releasing audio works by people whose work is outside of current trends, be it pop trends or the so-called avant-garde music trends. Dual Plover's first release 'a kombi - music to drive-by' consisted of recordings from a Volkswagen Kombi van originally recorded at picturesque Waverley Cemetery in September 1994. From 1996 onwards they have also been manufacturing CDs and DVDs as well as touring artists such as Kevin Blechdom, Al Duval and many others, both in their native Australia as well as internationally.

A dual ball joint suspension uses a pair of arms, one in tension, one in compression, to replace a wishbone, in a MacPherson or SLA suspension. The outer end of each arm terminates in a ball joint, hence the name.

Dual licence

A dual education system combines apprenticeships in a company and vocational education at a vocational school in one course. This system is practiced in several countries, notably Germany, Austria, and Switzerland but also for some years now in South Korea.In the Duales Ausbildungssystem young German people can learn one of 356 (as of 2005) apprenticeship occupations (Ausbildungsberufe), such as Doctor's Assistant, Dispensing Optician or Oven Builder. The precise skills and theory taught are strictly regulated and defined by national standards: An Industriekaufmann (Industrial Manager) has always acquired the same skills and taken the same courses in production planning, accounting and controlling, marketing, HR management, trade laws, etc. Especially in southern Germany this model is also used for a special college system called Duale Hochschule.In France, dual education (formation en alternance) has gained a lot of popularity since the 1990s, with information technology being the greatest draw.In South Korea, the German and Swiss dual apprenticeship system was studied and implemented by then Prime Minister Park Geun-hye to address South Korea's more glaring employment needs including tackling the country's high youth employment rate and as well as reforming South Korea's entire education system. Since the rise of Meister schools and modern reforms through the implementation of vocational education in the South Korean education system, graduates from vocational high schools have been successful in navigating through South Korea's highly competitive and sluggish job market as they possess relevant skill sets that are in high demand in the South Korean economy.

Dual fuel vehicle

Dual Mode Bus

Dual boot

Dual carriageways

Dual circuit

Dual Survival (2011 season)

Dual Relationships in Mental Health

Dual Survivor

Dual lnguage

Dual mode propulsion systems combine the high efficiency of bipropellant rockets with the reliability and simplicity of monopropellant rockets. Dual mode systems are either hydrazine/nitrogen tetroxide, or monomethylhydrazine/hydrogen peroxide (the former is much more common).

Dual containment was an official United States foreign policy aimed at containing Iraq and Iran, Israel's and the United States' two most important strategic adversaries in the Middle East. It was first outlined in May 1993 by Martin Indyk at the Washington Institute for Near East Policy and officially announced on February 24, 1994 at a symposium of the Middle East Policy Council by Indyk, then the senior director for Middle East Affairs of the National Security Council (NSC). It represented Bill Clinton's attempt to formulate a Persian Gulf strategy after the end of the Cold War and America's eviction of Iraq from Kuwait.

Dual compare-and-swap

Dual oxidase 2

Dual Link

Excerpt of the cover page of a print of the Treaty of Lübeck , with the Gregorian day directly above the Julian , both before the name of the month, May. The treaty was concluded between Roman Catholic parties, who had adopted the Gregorian calendar, and Protestant parties, who had not.

Dual layer recording

Dual mandates

Dual member proportional

Dual Magazine

Dual category

Dual exhaust

Dual Unity.jpg

Dual order

Dual group

In projective geometry, a dual curve of a given plane curve C is a curve in the dual projective plane consisting of the set of lines tangent to C. There is a map from a curve to its dual, sending each point to the point dual to its tangent line. If C is algebraic then so is its dual and the degree of the dual is known as the class of the original curve. The equation of the dual of C, given in line coordinates, is known as the tangential equation of C.The construction of the dual curve is the geometrical underpinning for the Legendre transformation in the context of Hamiltonian mechanics.

Dual conic

Dual bundle

Dual code rugby internationals

Dual Shock 3

Dual naming is a policy for the naming of geographical landmarks, in which an official name is adopted that combines two previous names. Usually, the context is a conflict over which of the two previous names is most appropriate.In several countries, dual naming is used where a native people and a colonial settler community have previously used two names, for example the Denali naming dispute in the US.In Australia, a dual naming policy is used to name landmarks that are of significance to the Indigenous Australians, but for which the most common name is European. For example, the landmark with the indigenous name Uluru and European name Ayers Rock is now officially named Uluru / Ayers Rock.Similarly, many places in New Zealand have dual Maori and English names, such as Aoraki/Mount Cook. The practise of officially giving certain New Zealand places dual names began in the 1920s, but dual names have become much more common in the 1990s and 2000s, in part due to treaty settlements."Derry/Londonderry" has been used unofficially to circumvent the Derry/Londonderry name dispute, in which Irish nationalists used "Derry" and Ulster unionists use "Londonderry" for the city and county in Northern Ireland. The "Derry stroke Londonderry" spoken form of this has in turn engendered the city's nickname "Stroke City".In Romania, the city of Cluj was renamed Cluj-Napoca for political reasons in the 1970s, as the communist government wanted to emphasize the city's Roman origins.Another example of the phenomenon can be seed in the name of the capital of the Spanish Basque Country, Vitoria-Gasteiz. This combines the city's Spanish name of Vitoria and Basque name of Gasteiz.The official name of the bilingual (German and French) Swiss town of Biel/Bienne is the combination of its German name (Biel) and its French name (Bienne).In Finland, many towns have two names, one in Finnish and one in Swedish (the two official languages of the country). The two names are considered equally correct but are not used as a formal duality of names.A special problem occurs when the landmark lies on the border between two (or more) countries, for example Mount Everest has several different locally-used names.

Dual booting systems

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Dual body stacker

Dual chartering

The Dual Phase Steels Magnetism Modeling (DPS-MMOD) program is an investigation project funded by the French National Agency for Research (ANR). The project started in 2009 for a period of four years. It aims at modeling and simulating dual-phase steel materials.With the need to reduce carbon dioxide emissions, the trend is to make lighter auto bodies, yet without sacrificing their aptitude to protect car passengers in case of accidents.

A dual carriageway (North American English: divided highway) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation (North American English: median).

Dual monarchy of France and England

Dual dating

Dual impedance and dual network are terms used in electronic network analysis. The dual of an impedance Z {\displaystyle Z} is its reciprocal, or algebraic inverse Z ′ = 1 Z {\displaystyle Z'={\frac {1}{Z}}} . For this reason the dual impedance is also called the inverse impedance. Another way of stating this is that the dual of Z {\displaystyle Z} is the admittance Y ′ = Z {\displaystyle Y'=Z} .The dual of a network is the network whose impedances are the duals of the original impedances. In the case of a black-box network with multiple ports, the impedance looking into each port must be the dual of the impedance of the corresponding port of the dual network.This is consistent with the general notion duality of electric circuits, where the voltage and current are interchanged, etc., since Z = V I {\displaystyle Z={\frac {V}{I}}} yields Z ′ = I V {\displaystyle Z'={\frac {I}{V}}} Parts of this article or section rely on the reader's knowledge of the complex impedance representation of capacitors and inductors and on knowledge of the frequency domain representation of signals.

Dual inline packages

Dual Transfer Mode

The Dual Phase Steels Magnetism Modeling (DPS-MMOD) program is an investigation project funded by the French National Agency for Research (ANR). The project started in 2009 for a period of four years. It aims at modeling and simulating dual-phase steel materials.With the need to reduce carbon dioxide emissions, the trend is to make lighter auto bodies, yet without sacrificing their aptitude to protect car passengers in case of accidents. Steel manufacturers are currently developing a new generation of flat carbon steels dual-phase steel. However these steels are more exposed, in terms of properties consistency, to process variations than other conventional flat carbon steels. Therefore, adequate measurement tools are required to at least check the production scatter and control it.The DPS-MMOD program will run full volume energy minimisation at mesoscopic scale, model the transition from mesoscopic to bulk properties with a multiscale approach and model the measurement system with a software developed for electrical appliances. The project also proposes a significant set of characterizations, including both laboratory and in-plant measurements to validate, at least qualitatively the aptitude of magnetic based non-destructive systems to assess Dual Phase steel microstructure.The project includes research centers, universities and steel manufacturers.

Dual coupler

Dual inline package

Dual identity

Dual income tax

Dual control stand refers to the North American practice of some railroads to have two control stands (a "control stand" is a locomotive subsystem which integrates all engine and brake functional controls within the operational radius of the locomotive engineer's left forearm from his customary seating position, facing forward at all times) in the cab of a hood unit locomotive, one on either side facing opposite directions to allow operation either long hood or short hood forward at all times).

Dual fulfilment

Dual Survival is a United States reality cable television series that airs on the Discovery Channel.

Dual member proportional representation

Dual ec drbg

DualGraph

Dual characteristics of God

Grady Powell

Dual headphone adapter

Dual group (disambiguation)

Dual Prime Conjecture

Dual log

K6-Petersen duality.svg

studio

In the mathematical discipline of graph theory, the dual graph of a plane graph G is a graph that has a vertex for each face of G. The dual graph has an edge whenever two faces of G are separated from each other by an edge, and a self-loop when the same face appears on both sides of an edge. Thus, each edge e of G has a corresponding dual edge, whose endpoints are the dual vertices corresponding to the faces on either side of e.

Dual Survival (season 3)

In matroid theory, the dual of a matroid M {\displaystyle M} is another matroid M ∗ {\displaystyle M^{\ast }} that has the same elements as M {\displaystyle M} , and in which a set is independent if and only if M {\displaystyle M} has a basis set disjoint from it.Matroid duals go back to the original paper by Hassler Whitney defining matroids. They generalize to matroids the notions of planar graph duality and of dual spaces in linear algebra.

Dual Purpose Ladder (London Fire Brigade)

Dual covenant theology

Dual fluid reactor

Dual criminality

vertical

Dual clutch

In reliability engineering, dual modular redundancy (DMR) is when components of a system are duplicated, providing redundancy in case one should fail. It is particularly applied to systems where the duplicated components work in parallel, particularly in fault-tolerant computer systems. A typical example is a complex computer system which has duplicated nodes, so that should one node fail, another is ready to carry on its work.DMR provides robustness to the failure of one component, and error detection in case instruments or computers that should give the same result give different results, but does not provide error correction, as which component is correct and which is malfunctioning cannot be automatically determined. There is an old adage to this effect, stating: "Never go to sea with two chronometers; take one or three." Meaning, if two chronometers contradict, how do you know which one is correct?A lockstep fault-tolerant machine uses replicated elements operating in parallel. At any time, all the replications of each element should be in the same state. The same inputs are provided to each replication, and the same outputs are expected. The outputs of the replications are compared using a voting circuit. A machine with two replications of each element is termed dual modular redundant (DMR). The voting circuit can then only detect a mismatch and recovery relies on other methods. Examples include 1ESS switch.A machine with three replications of each element is termed triple modular redundant (TMR). The voting circuit can determine which replication is in error when a two-to-one vote is observed. In this case, the voting circuit can output the correct result, and discard the erroneous version. After this, the internal state of the erroneous replication is assumed to be different from that of the other two, and the voting circuit can switch to a DMR mode. This model can be applied to any larger number of replications.

Dual Personality

Dual monocular o

The dual fulfilment of prophecy (British English) or dual fulfillment (American English) or dual prophecy or duality in prophecy or present and future application is the mainly Christian idea that some prophecies in the Bible have both a short-term and long-term fulfilment.

Dual diagnosis (also called co-occurring disorders, COD) is the condition of suffering from a mental illness and a comorbid substance abuse problem. There is considerable debate surrounding the appropriateness of using a single category for a heterogeneous group of individuals with complex needs and a varied range of problems. The concept can be used broadly, for example depression and alcoholism, or it can be restricted to specify severe mental illness (e.g.

Dual mode propulsion systems combine the high efficiency of bipropellant rockets with the reliability and simplicity of monopropellant rockets. Dual mode systems are either hydrazine/nitrogen tetroxide, or monomethylhydrazine/hydrogen peroxide (the former is much more common). Typically, this system works as follows: During the initial high-impulse orbit-raising maneuvers, the system operates in a bipropellant fashion, providing high thrust at high efficiency; when it arrives on orbit, it closes off either the fuel or oxidizer, and conducts the remainder of its mission in a simple, predictable monopropellant fashion.

Dual meets

In reliability engineering, dual modular redundancy (DMR) is when components of a system are duplicated, providing redundancy in case one should fail. It is particularly applied to systems where the duplicated components work in parallel, particularly in fault-tolerant computer systems.

Dual log plot

Dual format is a technique used to allow two completely different systems software to reside on the same disk.The term was used on the Amiga and Atari ST platform to indicate that the disk could be inserted into either machine and it would still boot and run.

A dual headphone adapter, also known as a "headphone splitter" or "audio jack splitter", is a device that allows two headphones to be connected through to one audio jack. They can be used to listen to audio through multiple audio input devices, such as headphones on devices such as an MP3 player, CD player, modern Computer with audio-out compatibility (such as a headphone socket) or boombox.

Dual linear program

Dual action

Dual encoding theory

Dual fulfillment

Dual V Model

Dual constraint graph

Open, to Love

less than one acre

Improvisie

Dual language is a form of education in which students are taught literacy and content in two languages. The majority of dual language programs in the United States teach in English and Spanish, although increasing numbers of programs use a partner language other than Spanish, such as Arabic, Chinese, French, Hawaiian, Japanese, or Korean. Dual language programs use the partner language for at least half of the instructional day in the elementary years.Dual language programs generally start in kindergarten or first grade and extend for at least five years, although many continue into middle school and high school. There is one higher education (baccalaureate and masters) program in Florida. These programs aim for bilingualism (the ability to speak fluently in two languages), biliteracy (the ability to read and write in two languages), academic achievement equal to that of students in non-dual language programs, and cross-cultural competence. Most dual language programs are located in neighborhood public schools, although many are charter, magnet, or private schools.

Different types of railroad rolling stock have different couplers depending on the purpose and type of equipment being used and its intended destination. European rolling stock tend to use buffers and chain couplers while American rolling stock uses a Janney coupler or "knuckle coupler". These are incompatible with each other, but where some railroads have obtained older, less expensive used rolling stock from different countries or regions, instead of having to standardize on one form of coupler, it may be useful to be able to use either type of coupler on a piece of rolling stock without having to remove anything.It is possible to mount both buffers and chain and knuckle couplers on the same car, provided that one can swing out of the way. Alternatively, either a lug to hold the chain is cast in the body of the coupler or a chain is mounted on top of the coupler. This is also done with an SA3 coupler built by SAB WABCO.Locomotives and some freight cars of the Indian Railways are fitted with a 'transition coupler' that incorporates a screw coupling within a knuckle coupler: the knuckle coupler remains in position and does not swing away when not in use. The screw coupling is mounted on a hinge on the opposite side of the knuckle coupler. Most Indian freight cars use the knuckle coupler alone, without buffers, whereas passenger coaches almost exclusively use screw couplers and buffers. Exceptions are the new LHB coaches imported from Europe, and a few other makes of carriages converted to use knuckle couplers.Some Russian locomotives and wagons have buffers together with the central coupler. When coupling to Finnish equipment, a short chain with a block that fits in the central coupler is placed on the Russian side, backing up and compressing the buffers so that the chain can be laid on the hook. (That is also the common way of coupling locomotives to or from wagons, faster than unscrewing the link.)British locomotive-hauled passenger carriages adopted a dual coupling system in the 1950s. They have retractable buffers and a central Buckeye automatic knuckle coupler that lowers to reveal a hook for a screw-type chain coupling. When in use, a pin through the buckeye shank rests in the conventional hook. No chain is provided on dual-coupled vehicles, since the chain on the other vehicle can be used when the knuckle coupler is out of the way (down). Inter-stock coupling was with the automatic coupler (with the buffers retracted), while connection to the locomotive was with the buffer-and-chain system with a screw coupler. Today this dual coupling system has been adopted for all loco-hauled passenger trains in Great Britain to allow faster shunting operations.

Dual Mag

Dual county

Dual gender

Heawood graph and K7 dually embedded in the torus.svg

In coding theory, the dual code of a linear code C ⊂ F q n {\displaystyle C\subset \mathbb {F} _{q}^{n}} is the linear code defined by C ⊥ = { x ∈ F q n ∣ ⟨ x , c ⟩ = 0 ∀ c ∈ C } {\displaystyle C^{\perp }=\{x\in \mathbb {F} _{q}^{n}\mid \langle x,c\rangle =0\;\forall c\in C\}} where ⟨ x , c ⟩ = ∑ i = 1 n x i c i {\displaystyle \langle x,c\rangle =\sum _{i=1}^{n}x_{i}c_{i}} is a scalar product. In linear algebra terms, the dual code is the annihilator of C with respect to the bilinear form <,>. The dimension of C and its dual always add up to the length n: dim ⁡ C + dim ⁡ C ⊥ = n . {\displaystyle \dim C+\dim C^{\perp }=n.} A generator matrix for the dual code is a parity-check matrix for the original code and vice versa. The dual of the dual code is always the original code.

Dual Vee Model

Dual of a tensor

Dual aspect theory

Dual monastery

Dual V

Dual mode

Dual channel memory architecture