DCR may refer to:

Computing

* .dcr, a raw image format * Decision Composite Residuosity in cryptography, see

Computational hardness assumption In computational complexity theory, a computational hardness assumption is the hypothesis that a particular problem cannot be solved efficiently (where ''efficiently'' typically means "in polynomial time"). It is not known how to prove (uncondition ...

* Design

Change request A change request (aka Change Control Request, or CCR) is a document containing a call for an adjustment of a system; it is of great importance in the change management process. Purpose and elements A change request is declarative, i.e. it stat ...

, also Document Change request and Database Change request *

Device control register In computing, a device control register is a hardware register that controls some computer hardware device, for example a peripheral or an expansion card. Specific technologies use this terminology with a narrower meaning: * The ISA PNP specificat ...

, a hardware register that controls some computer hardware device like a peripheral or an expansion card

Railways

* DCRail, a British freight operating company * Delmarva Central Railroad, a short-line railroad serving Delaware, Maryland, and Virginia on the Delmarva Peninsula *

Dubois County Railroad The Dubois County Railroad is a Class III short-line railroad serving Dubois County in southern Indiana, United States, and is a for-profit subsidiary of the Indiana Railway Museum, now better known as thFrench Lick Scenic Railway The railroad ...

, a Class III short-line railroad serving Dubois County in southern Indiana, United States

Engineering

* DC Resistance of an inductor, see Equivalent series resistance * Direct-conversion receiver * Dynamic compression ratio, referring to the

compression ratio The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the stati ...

of a combustion engine

Other

* Dacryocystorhinostomy, a surgical procedure to restore the flow of tears into the nose * Debt Coverage Ratio, another term for Debt service coverage ratio (DSCR) *

Digital cable ready Cable-ready is a designation which indicates that a TV set or other television-receiving device (such as a VCR or DVR) is capable of receiving cable TV without a set-top box. The term originated with analog TV, which uses different frequencies f ...

, indicating that a television is capable of receiving cable TV without a set-top box * Deglaciation Climate Reversal, see Younger Dryas * Department of Conservation and Recreation (Massachusetts), a state agency best known for its parks and parkways * Diploma of the College of Radiographers, abbreviated as DC(R), a qualification that was formerly awarded by the College of Radiographers, see Society and College of Radiographers * Distributed Constraint Reasoning, see Distributed constraint optimization * Division CuiRassée, a French armoured division in the Battle of France in 1940, see List of French divisions in World War II#Cavalry, mechanized and armoured divisions *

Dropped Call Rate In telecommunications, the dropped-call rate (DCR) is the fraction of the telephone calls which, due to technical reasons, were cut off before the speaking parties had finished their conversational tone and before one of them had hung up (dropped c ...

, a term in telecommunications denoting the percentage of calls which due to technical reasons were cut off before the speaking parties had finished their conversation and before one of them had hung up * Dual Cycle Rifle, a NATO calibre revolver-type assault rifle *

Durham College Rowing Durham College Rowing (commonly abbreviated to DCR) represents all sixteen college boat clubs in Durham University, encompassing approximately half of the rowers, scullers and coxes in the region of North East England. As well as organising tr ...

, an organization representing all college boat clubs in Durham University * Dynamic contrast ratio, referring to the

contrast ratio The contrast ratio (CR) is a property of a display system, defined as the ratio of the luminance of the brightest shade (white) to that of the darkest shade (black) that the system is capable of producing. A high contrast ratio is a desired aspec ...

property of a display system * ISO 639-3 code for the extinct language

Negerhollands Negerhollands ('Negro-Dutch') was a Dutch-based creole language that was spoken in the Danish West Indies, now known as the U.S. Virgin Islands. Dutch was its superstrate language with Danish, English, French, Spanish, and African elements ...

. {{disambiguation