CRF may refer to:

Science and technology

Corticotropin-releasing factor family Corticotropin-releasing factor family, CRF family is a family of related neuropeptides in vertebrates. This family includes corticotropin-releasing hormone (also known as CRF), urotensin-I, urocortin, and sauvagine. The family can be grouped int ...

, a family of related neuropeptides in vertebrates **

Corticotropin-releasing hormone Corticotropin-releasing hormone (CRH) (also known as corticotropin-releasing factor (CRF) or corticoliberin; corticotropin may also be spelled corticotrophin) is a peptide hormone involved in stress responses. It is a releasing hormone that bel ...

or corticotropin-releasing factor, a polypeptide hormone *

Chromatographic response function Chromatographic response function, often abbreviated to CRF, is a coefficient which measures the quality of the separation in the result of a chromatography. The CRF concept have been created during the development of separation optimization, to co ...

, a coefficient which characterizes the quality of the separation in the result of a chromatography * Coefficient of rolling friction, a coefficient that measures the rolling resistance * Cloud radiative forcing, the difference between the radiation budget components for average cloud conditions and cloud-free conditions * Chemotactic range fitting, a phenomenon in which organisms direct their movements according to certain chemicals *

Controlled-release fertiliser image:Methylene diurea.svg, 224px, Methylene diurea (MDU) is component of the most popular controlled-release fertilizers. A controlled-release fertiliser (CRF) is a granulated fertiliser that releases nutrients gradually into the soil (i.e., with a ...

, a solid form fertilizer * Coupled rangefinder camera *

Case report form A case report form (or CRF) is a paper or electronic questionnaire specifically used in clinical trial research. The case report form is the tool used by the sponsor of the clinical trial to collect data from each participating patient. All data on ...

, used in clinical trial research

Computing

Conditional random field Conditional random fields (CRFs) are a class of statistical modeling methods often applied in pattern recognition and machine learning and used for structured prediction. Whereas a classifier predicts a label for a single sample without consi ...

, in machine learning, a type of graphical model * Constant Rate Factor, used video encoders such as

x265 x265 is a software codec for creating digital video streams in the High Efficiency Video Coding (HEVC/H.265) video compression format developed by the Joint Collaborative Team on Video Coding (JCT-VC). It is available as a command-line app or ...

, and

VP9 VP9 is an open and royalty-free video coding format developed by Google. VP9 is the successor to VP8 and competes mainly with MPEG's High Efficiency Video Coding (HEVC/H.265). At first, VP9 was mainly used on Google's video platform YouTube. T ...

, and

AV1 AOMedia Video 1 (AV1) is an open, royalty-free video coding format initially designed for video transmissions over the Internet. It was developed as a successor to VP9 by the Alliance for Open Media (AOMedia), a consortium founded in 2015 tha ...

as a bitrate control method.

Medicine

Cardiorespiratory fitness Cardiorespiratory fitness (CRF) refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity. Scientists and researchers use CRF to assess the functional capacity of the re ...

, in a clinical trial, the document showing all the evaluated patient data *

Cancer-related fatigue Cancer-related fatigue is a symptom of fatigue that is experienced by nearly all cancer patients. Among patients receiving cancer treatment other than surgery, it is essentially universal. Fatigue is a normal and expected side effect of most form ...

Chronic renal failure Chronic kidney disease (CKD) is a type of kidney disease in which a gradual loss of kidney function occurs over a period of months to years. Initially generally no symptoms are seen, but later symptoms may include leg swelling, feeling tired, vom ...

, also known as chronic kidney disease (CKD)

Economics and finance

Capital recovery factor A capital recovery factor is the ratio of a constant annuity to the present value of receiving that annuity for a given length of time. Using an interest rate ''i'', the capital recovery factor is: CRF = \frac where n is the number of annuities ...

, a financial concept *

Consolidated Revenue Fund In many states with political systems derived from the Westminster system, a consolidated fund or consolidated revenue fund is the main bank account of the government. General taxation is taxation paid into the consolidated fund (as opposed ...

, the main government bank account in many Commonwealth Nations

Organisations

Catholic Reaction Force The Darkley killings or Darkley massacre was a gun attack carried out on 20 November 1983 near the village of Darkley in County Armagh, Northern Ireland. Three gunmen attacked worshippers attending a church service at Mountain Lodge Pentecostal ...

, a name used by paramilitaries to issue death threats against Protestants in Northern Ireland during "The Troubles" *

Cave Research Foundation The Cave Research Foundation (CRF) is an American private, non-profit group dedicated to the exploration, research, and conservation of caves. The group arose in the early 1950s from the exploration efforts at Floyd Collins Crystal Cave, now with ...

, an American private, non-profit group dedicated to the exploration, research, and conservation of caves *

Central Readiness Force The was established on March 28, 2007, following the upgrading of the Japanese Defense Ministry from the former Japanese Defense Agency. It was initially based at Japan Ground Self-Defense Force (JGSDF) Camp Asaka in Nerima, Tokyo. The comman ...

, a military defense unit in Japan * Centro Ricerche Fiat, the central research organization for Fiat; see

Blue&Me Blue&Me is an integrated in-vehicle infotainment system used worldwide on many vehicles marketed by Fiat Chrysler Automobiles (FCA) from model years 2006–2017. With the exception of the Ford Ka, which is a lightly modified Fiat 500, the system ...

* Air Central (ICAO airline designator), an airline in Japan

Sports

Circle rules football Circle rules football, commonly referred to as circle rules, is a team sport played between two teams of six with a large spherical ball similar to a stability ball. Invented in New York City in 2006, the sport is currently played in cities across ...

, a variation on football with only one goal *

Cyprus Rugby Federation The Cyprus Rugby Federation (CRF) (Greek: Κυπριακή Ομοσπονδία Ράγκμπι, Κ.Ο.ΡΑ) ( tr, Kıbrıs Ragbi Federasyonu (KRF)) the governing body for rugby union in Cyprus. It runs several competitions including a league with t ...

, the governing body for rugby union in Cyprus *

Clube de Regatas do Flamengo Clube de Regatas do Flamengo (; English: ''Flamengo Rowing Club''), more commonly referred to as simply Flamengo, is a Brazilian sports club based in Rio de Janeiro, in the neighborhood of Gávea, best known for their professional football ...

, a Brazilian football club based in Rio de Janeiro

Other uses

Honda CRF series The Honda CRF series is a line of four-stroke motocross, trail, and dual sport motorcycles manufactured and marketed by Honda. The CRF line was launched in 2000 as a successor to the Honda CR series. The full sized motocross bikes are equipped w ...

, a series of motorcycles *

Carolina Renaissance Festival The Carolina Renaissance Festival is a 25 acre renaissance themed amusement park and one of the largest Renaissance fairs in America. The Festival is set in a fictional storybook village of "Fairhaven" and nestled within 325 acres of autumn wo ...

, a festival held annually in North Carolina, US *

Charter of Rights and Freedoms The ''Canadian Charter of Rights and Freedoms'' (french: Charte canadienne des droits et libertés), often simply referred to as the ''Charter'' in Canada, is a bill of rights entrenched in the Constitution of Canada, forming the first part o ...

, a bill of rights entrenched in the Constitution of Canada {{disambiguation