edgepedia

Technology and the built world

61,984 articles

Entergy Texas

Entergy Texas, Inc. is a regulated electric utility subsidiary of Entergy Corporation serving about 538,000 customers across 27 counties in eastern and southeastern Texas from headquarters in Beaumont.

Enterprise architecture framework

An enterprise architecture framework is a logical structure of principles, models, and practices for describing an enterprise's business, information, and technology architecture, first introduced in 1986.

Enterprise content management

Enterprise content management, also known as Enterprise CMS, is the strategies, methods, and tools for capturing, managing, storing, preserving, and delivering an organization's content and documents.

Enterprise Dynamics

Enterprise Dynamics (ED) is a discrete event simulation package developed by INCONTROL Simulation Solutions in Woerden, the Netherlands, used to model, analyze, and optimize logistics and manufacturing systems.

Enterprise JavaBeans

Enterprise JavaBeans (EJB) is a Java specification for developing large-scale, distributed, transactional business applications, first released in 1998 and now developed by the Eclipse Foundation as Jakarta Enterprise Beans.

Enterprise Products Partners

Enterprise Products Partners (NYSE: EPD) is a Houston-based master limited partnership providing midstream energy services to producers and consumers across North America; its origins trace to a 1968 company founded by Dan Duncan.

Enterprise resource planning

Enterprise resource planning (ERP), often called an ERP system, is business management software that integrates functions like finance, human resources, manufacturing, and supply chain through one common database.

Enterprise service bus

An enterprise service bus (ESB) is an architectural pattern in which a centralized software component integrates applications, performing data transformation, message routing, and protocol conversion as the backbone of service-oriented architecture.

Enterprise software

Enterprise software, also known as enterprise application software, is software organizations buy or license to run their own operations, coordinating accounting, procurement, human resources, and supply chain across departments.

Entice Oil and Gas Field

Entice is a designated oil and gas field in central Alberta, south of Strathmore, known as the site of Canada's first demonstration-scale commercial coalbed methane project, begun in 2003.

Entidade Reguladora dos Serviços Energéticos

The Entidade Reguladora dos Serviços Energéticos (ERSE), Portugal's independent energy regulator since 1997, regulates electricity, natural gas, LPG, petroleum-derived fuels, and biofuels, setting regulated tariffs and supervising energy markets.

Entity Framework

Entity Framework, also known as ADO.NET Entity Framework, is an object-relational mapping family for .NET, released in 2008 and split into the frozen EF6 and cross-platform EF Core.

Entity linking

Entity linking is a natural language processing method that maps entity mentions in text to knowledge base entries, choosing the right entry when candidates match the same surface form.

Entity List

The Entity List is a U.S. government roster of foreign businesses and individuals facing export license requirements, maintained by the Commerce Department's Bureau of Industry and Security.

Entity resolution

Entity resolution (record linkage, deduplication, data matching) identifies records referring to the same real-world entity across databases. Methods span deterministic rules, Fellegi-Sunter probabilistic linkage, Bayesian clustering, and transformers, with blocking for scale.

Entity–attribute–value model

The entity–attribute–value model, also known as the EAV model or open schema, is a database design pattern storing each fact as a row of entity, attribute, and value.

Entity–relationship model

The entity–relationship (ER) model is a conceptual data model for database design, introduced by Peter Chen in 1976, representing data as entities, relationships, and attributes.

Entomopter

An entomopter is an insect-like flapping-wing micro air vehicle, able to fly and sometimes crawl, patented by Robert C. Michelson of the Georgia Tech Research Institute in 1997 and studied by NASA for flight on Mars.

Entrained-flow gasifier

An entrained-flow gasifier is a gasification reactor in which finely pulverized fuel and oxygen react co-currently at high temperature, giving tar-free syngas, over 95% carbon conversion, and slag removal.

Entrepôt

An entrepôt is a storehouse or port where imported goods are stored for distribution, transshipment, or repackaging, often without import duty because they are held for re-export, as in Singapore.

Entrepreneurs First

Entrepreneurs First is a London-based talent investor and company builder founded in 2011 by Alice Bentinck and Matt Clifford that recruits individuals, often technically skilled, and helps them find cofounders and build startups.

Entropy generation analysis

Entropy generation analysis is a second-law method quantifying irreversibilities and exergy destruction in thermal systems; its design form, entropy generation minimization, was introduced by Adrian Bejan in 1982.

ENTSO-E

ENTSO-E, the European Network of Transmission System Operators for Electricity, is the Brussels-based association of 40 electricity TSOs from 36 countries, created under EU law in 2009.

Entwicklung series

The Entwicklung series, also called Entwicklungserie or E-Serie, was a German program of 1943 to develop standardized, mass-producible tanks and tank destroyers replacing the Panther and Tiger.

Enugu Air

Enugu Air is a commercial airline owned by the Enugu State Government of Nigeria, inaugurated in July 2025 as the country's second state-owned commercial airline after Ibom Air.

Enumerated type

An enumerated type, also called an enum, is a data type restricted to a named, fixed set of constants like compass directions, introduced in Pascal in 1970.

Envelope

An envelope is a flat, folded paper container, usually rectangular, with a gummed flap that encloses a letter for mailing; its modern form arose in 17th century Europe.

Envelope analysis

Envelope analysis, also called envelope detection or the High-Frequency Resonance Technique (HFRT), is a vibration signal-processing method that demodulates high-frequency resonance to detect rolling-element bearing defects in rotating machines.

Envelope detection

Envelope detection is a signal processing method that extracts the amplitude outline of a signal, by Hilbert transform or rectification with low-pass filtering, used in AM demodulation and ultrasound imaging.

Envelope detector

An envelope detector is an electronic circuit, usually a diode rectifier followed by an RC filter, that recovers the envelope of a high-frequency signal, most commonly to demodulate AM broadcasts.