ERP or Erp may refer to:

Acronyms

Economics

* Effective rate of protection of tariffs *

Equity risk premium The equity premium puzzle refers to the inability of an important class of economic models to explain the average equity risk premium (ERP) provided by a diversified portfolio of U.S. equities over that of U.S. Treasury Bills, which has been obser ...

, excess return on risky investments *

European Recovery Program The Marshall Plan (officially the European Recovery Program, ERP) was an American initiative enacted in 1948 to provide foreign aid to Western Europe. The United States transferred over $13 billion (equivalent of about $ in ) in economic re ...

or Marshall Plan

Medicine

* Effective refractory period, in a cardiac cycle * Estrogen receptor positive, a cancer pathology test result *

Event-related potential An event-related potential (ERP) is the measured brain response that is the direct result of a specific sense, sensory, cognition, cognitive, or motor system, motor event. More formally, it is any stereotyped electrophysiology, electrophysiologi ...

, a measured brain response *

Exposure and response prevention Exposure therapy is a technique in behavior therapy to treat anxiety disorders. Exposure therapy involves exposing the target patient to the anxiety source or its context without the intention to cause any danger (desensitization). Doing so is tho ...

, a treatment method in behavioral therapy * OspE/F-like related protein, in Lyme disease microbiology

Other acronyms

Effective radiated power Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would hav ...

, of directional radio transmission * ''Ejército Revolucionario del Pueblo'' (disambiguation), (Spanish for People's Revolutionary Army), various Latin American communist or socialist organizations *

Electronic Road Pricing The Electronic Road Pricing (ERP) system is an electronic toll collection scheme adopted in Singapore to manage traffic by way of road pricing, and as a usage-based taxation mechanism to complement the purchase-based Certificate of Entitleme ...

, in Singapore *

Energy-related products ErP, energy-related products, are products that use energy, or that do not use energy but have an indirect impact on energy consumption, such as water using devices, building insulation products, windows, etc. Compared to ErP, energy-using products ...

, that use or affect energy consumption * Enterprise resource planning, a business process system

People

Erp (Pict) ERP or Erp may refer to: Acronyms Economics * Effective rate of protection of tariffs * Equity risk premium, excess return on risky investments * European Recovery Program or Marshall Plan Medicine * Effective refractory period, in a cardiac cy ...

, father of Drest I of the Picts

Places

Erp, Ariège Erp (; oc, Èrp) is a commune in the Ariège department in southwestern France. Population Inhabitants are called ''Erpois''. See also *Communes of the Ariège department The following is a list of the 327 Communes of France, communes ...

, France, a village *

Erp (Germany) Erp is a village in Erftstadt, North Rhine-Westphalia, Germany. It has about 2650 inhabitants (2006). Location and appearance Erp is located 25 km south-west of Cologne in an open and flat landscape about 125 metres above sea level. The muni ...

, a village *

Erp, Netherlands Erp () is a village in the southern Netherlands, in the province of North Brabant between 's-Hertogenbosch and Eindhoven. Prior to 1994, Erp was a municipality consisting of the town of Erp and the villages of Boerdonk and Keldonk. In that year, th ...

, a town