edgepedia

Technology and the built world

61,984 articles

NXP Semiconductors

NXP Semiconductors, formerly Philips Semiconductors, is a Dutch semiconductor company in Eindhoven, Netherlands, founded in 2006, known for automotive chips, the S32 platform, and NFC.

NY-Sun

NY-Sun is New York State's incentive program for solar installations, launched in 2012 and administered by NYSERDA, which pays installers cash incentives based on system size and location.

Nyagan GRES power station

Nyagan GRES (Няганская ГРЭС) is a gas-fired combined-cycle power station near Nyagan in Western Siberia, Russia, built by Fortum and inaugurated in 2013 with a capacity of 1,250 MW.

NYC Local Law 97

NYC Local Law 97 (LL97) is a 2019 New York City law imposing annual greenhouse gas emissions limits on buildings over 25,000 square feet, beginning in 2024.

NYK Line

NYK Line (Nippon Yusen Kaisha, 日本郵船) is a Japanese shipping and logistics group founded in 1885, headquartered in Tokyo and operating a fleet of 886 vessels.

Nylon

Nylon is a family of synthetic polyamide polymers, first made at DuPont in 1935, best known as the first wholly synthetic textile fiber and as a widely used engineering plastic.

Nym (mixnet)

Nym, also known as the Nym network, is a decentralized mixnet operated from Switzerland that hides who is talking to whom by mixing and delaying packets.

Nymphenburg Palace

Nymphenburg Palace (Schloss Nymphenburg) is a former summer residence of the Wittelsbach rulers of Bavaria, west of Munich, begun in 1664 and home to King Ludwig II's birthplace.

NYNEX

NYNEX was a regional Bell holding company serving the northeastern United States through New York Telephone and New England Telephone until its 1997 merger into Bell Atlantic.

Nyquist Folding Receiver

The Nyquist folding receiver, introduced in 2008, is an RF receiver architecture that samples wide spectra at sub-Nyquist rates by exploiting aliasing to fold many Nyquist zones into one passband.

Nyquist frequency

The Nyquist frequency, also known as the folding frequency or Nyquist limit, is half the sampling rate of a sampled signal, named after engineer Harry Nyquist; frequencies above it alias.

Nyquist plot

A Nyquist plot is a polar plot of a system's frequency response in the complex plane, the basis of the Nyquist stability criterion for feedback systems.

Nyquist rate

The Nyquist rate, also called the Nyquist sampling rate, is the minimum rate for sampling a bandlimited signal, 2B samples per second for bandwidth B, named for Harry Nyquist.

Nyquist wavelength-division multiplexing

Nyquist wavelength-division multiplexing, also called Nyquist-WDM or N-WDM, is an optical fiber technique that packs wavelength channels at the Nyquist bandwidth, demonstrated at 32.5 Tbit/s over 227 km.

NYSERNet

NYSERNet is a nonprofit research and education network serving New York State, founded in 1985 and an early pioneer of TCP/IP networking outside the Department of Defense.

Nysted Wind Farm

Nysted Wind Farm, also called Nysted Havmøllepark or Rødsand I, is a Danish offshore wind farm of 72 turbines with 165.6 MW capacity, commissioned in 2003.

Nyström method

The Nyström method approximates a large kernel matrix by sampling a small subset of columns and reconstructing a low-rank approximation, avoiding the O(n³) cost of exact kernel computations.

NYU Depth V2

NYU Depth V2 is an indoor computer-vision dataset of RGB and depth image pairs captured with a Microsoft Kinect, introduced in 2012 by New York University researchers.

NZ Transport Agency

NZ Transport Agency Waka Kotahi, known as NZTA, is the New Zealand Crown entity that funds land transport, manages state highways, and regulates road transport, formed in 2008.

NZR RM class

The NZR RM class, RM for "rail motor", was New Zealand Railways' classification covering all its railcars, from 1920s experiments to the Silver Fern railcars of 1972.

NZS 1170

NZS 1170 is the New Zealand structural design actions standard, a joint Australian/New Zealand series (AS/NZS 1170) specifying loads, wind, snow, and earthquake actions for building design.

NZS 3101

NZS 3101 is New Zealand's joint standard for the design of concrete structures, first issued in the early 1970s and internationally known for its earthquake capacity design provisions.

NZXT

NZXT is an American computer hardware company founded by Johnny Hou in 2004, based in City of Industry, California, that makes PC cases, coolers, and prebuilt gaming PCs.

O_DIRECT

O_DIRECT is a Linux flag passed to open() that makes reads and writes bypass the kernel's page cache, mainly for applications that cache data themselves.

O-arm Surgical Imaging System

The O-arm Surgical Imaging System is a mobile x-ray system made by Medtronic that provides 2D fluoroscopy and 3D cone-beam CT imaging during surgery, primarily for spine procedures.

O-RAN Alliance

The O-RAN Alliance is an international standards organization founded in 2018 by AT&T, China Mobile, Deutsche Telekom, NTT DOCOMO, and Orange to develop open specifications for the Radio Access Network.

O-ring

An O-ring, also called a toric joint, is a torus-shaped elastomer seal seated in a groove and compressed between mating surfaces to block liquids or gases.

O. R. Tambo International Airport

O. R. Tambo International Airport, opened in 1952 as Jan Smuts Airport, serves Johannesburg from Kempton Park, Gauteng, and is Africa's busiest airport, handling over 21 million passengers a year.

O.F. Mossberg & Sons

O.F. Mossberg & Sons is an American firearms manufacturer founded by Oscar F. Mossberg and his sons in 1919, best known for the Model 500 pump-action shotgun.

O'Hare International Airport

O'Hare International Airport, also known as O'Hare Airport, is a major airport in Chicago owned by the city, a dual hub for United Airlines and American Airlines.