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".
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
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.
On September 18, 2001, Collective Soul released their greatest hits compilation Seven Year Itch: Greatest Hits, 1994-2001 (stylized as 7even Year Itch). The compilation includes songs recorded from 1994 to 2001 and included two new tracks; "Next Homecoming" and "Energy". Seven Year Itch received decent reviews and was relatively successful It sold 225,000 copies in the first year after its release and reached number fifty on the Billboard 200; in Canada, it reached number nine on its albums chart and went platinum. All the songs in Seven Year Itch had charted in the US on the Billboard Hot 100, Mainstream Rock Tracks, or the Modern Rock Tracks chart, except for "Energy", which debuted in this compilation.
The compilation has sold over 500,000 copies. It saw a resurgence in sales after Collective Soul began putting out albums on their own independent label, El Music Group, beginning in 2004.
Seven Year Itch was the last album Collective Soul released through Atlantic Records and their last album to feature guitarist Ross Childress, who had been with the band since its 1993/1994 debut.
The Bezirk Frankfurt, also Bezirk Frankfurt (Oder), was a district (Bezirk) of East Germany. The administrative seat and the main town was Frankfurt (Oder).
The district was established, with the other 13, on July 25, 1952, substituting the old German states. After October 3, 1990, it was disestablished due to the German reunification, becoming again part of the state of Brandenburg.
The Bezirk Frankfurt bordered with East Berlin and the Bezirke of Neubrandenburg, Potsdam and Cottbus. It bordered also with Poland.
The Bezirk was divided into 12 Kreise: 3 urban districts (Stadtkreise) and 9 rural districts (Landkreise):
The name Frankfurt is associated with:
The city of Frankfurt am Main in Hesse, Germany's financial centre.
The following institutions are related:
Frankfurt is a prototype river icebreaker constructed by Hitzler Werft for icebreaking duties on the Elbe River, Oder River, and canals in Germany, operated by the Wasser und Schifffahrtsamt Eberswalde. She was built in 2002. Three further vessels, built to a similar design, were ordered by the Wasser und Schifffahrtsamt in 2009.
As the lead ship of her class, models of the Frankfurt underwent testing in a large ice-tank laboratory. She cost 4.2 million euros.
Her design features a pair of diesel generators that power electric motors that actually drive the propeller. The use of a diesel-electric system provides a "good torque curve", and eliminates the need for a bulky gearbox. The electric motor can consume up to 700 kilowatts (940 hp) She has a third "harbor diesel" of 15 kilowatts (20 hp).
Besatzung: Schiffsführer, Steuermann, Maschinist, Matrose. Bei Bedarf Dolmetscher. (Crew: Skipper, mate, engineer, sailor. Interpreters when needed.)