Numeral prefix

Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and other European languages, they are used to coin numerous series of words, such as unicycle – bicycle – tricycle, dyad – triad – decade, biped – quadruped, September – October – November – December, decimal – hexadecimal, sexagenarian – octogenarian, centipede – millipede, etc. There are two principal systems, taken from Latin and Greek, each with several subsystems; in addition, Sanskrit occupies a marginal position. There is also an international set of metric prefixes, which are used in the metric system, and which for the most part are either distorted from the forms below or not based on actual number words.

Table of number prefixes in English

In the following prefixes, a final vowel is normally dropped before a root that begins with a vowel, with the exceptions of bi-, which is bis- before a vowel, and of the other monosyllables, du-, di-, dvi-, tri-, which are invariable.

Uni (inhabited locality)

Uni (Russian: Уни) is the name of several inhabited localities in Russia.

Neopets

Neopets (originally NeoPets) is a virtual pet website. Visitors can create accounts, own virtual pets ("Neopets"), and buy virtual items for them using one of two virtual currencies, one of which can be earned within the site and the other of which can purchased with real-world money.

The website was launched by Adam Powell and Donna Williams in late 1999. Two years later, a consortium of investors led by Doug Dohring bought a controlling interest in the company and in June 2005, Viacom bought Neopets Inc. for US$160 million. On March 17, 2014, Neopets was sold to Knowledge Adventure for an unannounced amount.

Gameplay

Neopets allows users to create and care for virtual pets called Neopets and explore the virtual world of Neopia. There is no set objective for the users, but they are expected to feed and care for their Neopets when they grow hungry or ill. Neopets will not die if neglected, but their health can limit their gameplay. Neopets come in a variety of species and colors and users can create or adopt their own. Users can obtain items to interact with their Neopet, such as books to read and toys to play with them. Neopets can be customised with certain clothing items, paint brushes, transformation potions, and accessories. Users can build a customisable Neohome for their Neopets and furnish it with furniture, wallpaper, and flooring. Neopets can battle against other Neopets or non-player characters in the Battledome but they cannot die there.

Energy (journal)

Energy is a peer-reviewed academic journal covering research on energy engineering that was established in 1976. It is published by Elsevier and the editor-in-chief is Henrik Lund (Aalborg University). According to the Journal Citation Reports, the journal has a 2013 impact factor of 4.159, ranking it 13th out of 83 journals in the category "Energy & Fuels" and second out of 55 journals in "Thermodynamics".

References

External links

Energy (Fourplay album)

Energy is the 11th studio album by jazz group Fourplay, released on September 23, 2008. The cover show the four members: keyboardist Bob James, guitarist Larry Carlton, bassist Nathan East and drummer Harvey Mason. Energy grafts a variety of sounds – R&B, pop, African and more – to Fourplay’s unwavering jazz foundations. In addition to vocals by East – a charter member since the band’s inception in 1990 – the album also features a vocal track by Esperanza Spalding, the upright bassist, composer and vocalist who has recently taken the jazz world by storm with her self-titled recording debut earlier this year on Heads Up. Fourplay's first single from Energy "Fortune Teller" was nominated for a Grammy in the category Best Pop Instrumental Performance at the 51st Grammy Awards 2009. This is guitarist Larry Carlton's last Fourplay album, before Chuck Loeb joined Fourplay in 2010.

Track listing

Energy (signal processing)

In signal processing, the energy of a continuous-time signal x(t) is defined as

the energy of a discrete-time signal x(t) is defined as

Relationship to energy in physics

Energy in this context is not, strictly speaking, the same as the conventional notion of energy in physics and the other sciences. The two concepts are, however, closely related, and it is possible to convert from one to the other:

For example, if x(t) represents the potential (in volts) of an electrical signal propagating across a transmission line, then Z would represent the characteristic impedance (in ohms) of the transmission line. The units of measure for the signal energy would appear as volt²·seconds, which is not dimensionally correct for energy in the sense of the physical sciences. After dividing by Z, however, the dimensions of E would become volt²·seconds per ohm, which is equivalent to joules, the SI unit for energy as defined in the physical sciences.

Spectral energy density