edgepedia

Technology and the built world

61,984 articles

SimCLR

SimCLR is a self-supervised learning method that trains an image encoder by contrasting two augmented views of the same image, reported by Ting Chen and colleagues in 2020.

SIMD

SIMD (single instruction, multiple data) is a class of computer architecture, defined in Flynn's 1966 taxonomy, in which one instruction operates on many data elements simultaneously, exploiting data-level parallelism.

Simhadri power station

Simhadri power station, also known as Simhadri Super Thermal Power Station, is a 2,000 MW coal-fired power station of NTPC Limited in Andhra Pradesh, India, its first coastal plant.

Similarweb Ltd.

Similarweb Ltd. is an Israeli-founded digital data and analytics company, founded by Or Offer in 2007, that estimates website and mobile app traffic, engagement, and market share.

Simio

Simio is a commercial simulation, production planning, and scheduling software package developed by Simio LLC of Sewickley, Pennsylvania, first released in 2008 and built around object-based modeling.

SIMM

A SIMM (Single In-line Memory Module) is a memory module with one row of edge contacts, standard in PCs from the mid-1980s to the late 1990s.

Simmering power station

Simmering power station (Kraftwerk Simmering) is a power plant complex in Vienna, Austria, generating electricity since 1902; its wood-fired biomass plant opened in 2006 as Europe's largest forest-biomass power station.

Simmonds Precision Products

Simmonds Precision Products is an American aerospace manufacturer in Vergennes, Vermont, known for fuel quantity gauging systems on aircraft like the Boeing 737 and B-2 bomber.

Simón Bolívar International Airport (Venezuela)

Simón Bolívar International Airport, also known as Maiquetía International Airport, is Venezuela's principal international airport, located in Maiquetía about 20 kilometers north of Caracas, which it serves.

Simon J. L. Billinge

Simon J. L. Billinge is an American materials scientist known for developing the atomic pair distribution function method; he became Distinguished Professor at UC Santa Barbara in 2026.

Simon Middelhoek

Simon Middelhoek is a Dutch electrical engineer who studied thin magnetic films at IBM Zurich and, from 1969, led silicon sensor research as professor of electronic instrumentation at TU Delft.

Simon Osindero

Simon Osindero is a machine learning researcher and Principal Scientist at Google DeepMind, credited by the 2024 Nobel Committee for the 2006 deep learning pre-training breakthrough.

Simon P. Ringer

Simon P. Ringer is an Australian materials scientist and microscopist known for atom probe tomography and physical metallurgy, and a University of Sydney professor since 2001 who became Pro-Vice-Chancellor (Research Infrastructure) in December 2022.

Simon Ramo

Simon Ramo (1913–2016) was an American engineer and physicist, chief scientist of the US ICBM program from 1954 to 1958 and co-founder of Ramo-Wooldridge, the predecessor of TRW.

Simone Giertz

Simone Giertz is a Swedish inventor and YouTuber known as the "Queen of Shitty Robots" and for Truckla, a Tesla Model 3 converted into a pickup.

Simone Moro

Simone Moro, born 1967, is an Italian alpinist from Bergamo who made the first winter ascents of four 8,000-meter peaks and is a helicopter rescue pilot.

SIMOX

SIMOX (Separation by IMplantation of OXygen) is a process for fabricating silicon-on-insulator wafers by implanting oxygen ions into silicon and annealing, developed in the 1970s for radiation-hardened and high-speed circuits.

SIMPLE algorithm

The SIMPLE algorithm (Semi-Implicit Method for Pressure-Linked Equations) is an iterative pressure-correction method for computing incompressible fluid flows, introduced by Patankar and Spalding in 1972 and still standard in CFD software.

Simple Binary Encoding

Simple Binary Encoding (SBE) is a binary message encoding standard published by the FIX Trading Community for high-performance trading, encoding and decoding messages in tens of nanoseconds.

Simple DirectMedia Layer

Simple DirectMedia Layer (SDL) is a cross-platform C development library that gives applications low-level access to audio, input, and graphics hardware, used by emulators and games.

Simple English Wikipedia

Simple English Wikipedia, also known as Simple Wikipedia, is a Wikimedia wiki with separate, shorter articles written in simplified language for children and English learners.

Simple File Transfer Protocol

Simple File Transfer Protocol (SFTP) is a file transfer protocol for the ARPA-Internet, specified in RFC 913 by Mark K. Lottor of MIT and published in September 1984.

Simple Knowledge Organization System

Simple Knowledge Organization System, or SKOS, is a W3C standard data model, expressed as an RDF vocabulary, for publishing thesauri, taxonomies, and classification schemes on the Web.

Simple machine

A simple machine is a device with few or no moving parts that changes the force needed to do work, such as a lever, pulley, or ramp.

Simple Mail Transfer Protocol

Simple Mail Transfer Protocol (SMTP) is the Internet standard protocol for transferring email between servers over TCP, first defined in RFC 821 in August 1982.

Simple Network Management Protocol

The Simple Network Management Protocol (SNMP) is an Internet-standard application-layer protocol for monitoring and managing network devices such as routers and switches, in use since 1990 and now recommended only in its secure SNMPv3 form.

Simple preference optimization

Simple preference optimization (SimPO) is a reference-free preference optimization algorithm for aligning large language models, introduced by Princeton NLP in May 2024 as a simpler alternative to DPO.

Simple Service Discovery Protocol

The Simple Service Discovery Protocol (SSDP) is a UDP-based protocol for advertising and discovering services on local networks, best known as the discovery layer of UPnP.

Simple suspension bridge

A simple suspension bridge is a bridge whose walkway lies on or between two sagging cables anchored at each end, without vertical suspenders, so it is restricted to pedestrians and suits difficult terrain.

SimpleFOC

SimpleFOC, also known as Arduino-FOC or Arduino Simple Field Oriented Control, is an open-source MIT-licensed Arduino library implementing field oriented control of brushless DC and stepper motors on hobby-grade microcontrollers.