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".

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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

Seven Year Itch (Collective Soul album)

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.

Leipzig

Leipzig (/ˈlaɪpsɪɡ/; German: [ˈlaɪptsɪç]) is the largest city in the federal state of Saxony, Germany. With its population of 544,479 inhabitants (1,001,220 residents in the larger urban zone) Leipzig, one of Germany's top 15 cities by population, is located about 160 kilometers (99 miles) southwest of Berlin at the confluence of the White Elster, Pleisse, and Parthe rivers at the southerly end of the North German Plain.

Leipzig has been a trade city since at least the time of the Holy Roman Empire. The city sits at the intersection of the Via Regia and Via Imperii, two important Medieval trade routes. Leipzig was once one of the major European centers of learning and culture in fields such as music and publishing. Leipzig became a major urban center within the German Democratic Republic (East Germany) after World War II, but its cultural and economic importance declined despite East Germany being the richest economy in the Soviet Bloc.

Leipzig later played a significant role in instigating the fall of communism in Eastern Europe, through events which took place in and around St. Nicholas Church. Since the reunification of Germany, Leipzig has undergone significant change with the restoration of some historical buildings, the demolition of others, and the development of a modern transport infrastructure. Leipzig today is an economic center and the most livable city in Germany, according to the GfK marketing research institution.Oper Leipzig is one of the most prominent opera houses in Germany, and Leipzig Zoological Garden is one of the most modern zoos in Europe and ranks first in Germany and second in Europe according to Anthony Sheridan. Leipzig is currently listed as Gamma World City and Germany's "Boomtown".

Leipzig (district)

Leipzig (official name: Landkreis Leipzig) is a district (Kreis) in the Free State of Saxony, Germany. It is named after the city Leipzig, which is partly surrounded by the district, but not part of it. It borders (from the west and clockwise) the state Saxony-Anhalt, the urban district Leipzig, the districts Nordsachsen and Mittelsachsen, and the state Thuringia.

Geography

The district is located in the Leipzig Bay and is rather flat. Individual hills are found in the north (Hohburg Hills) and south of the district. Its larger rivers are the Mulde, Pleiße and White Elster. Also worth mentioning are the many lakes of the Leipzig Neuseenland in the west of the county, that were formed by flooding old brown coal pits.

History

The district was established by merging the former districts Muldentalkreis and Leipziger Land as part of the district reform of August 2008.

Geography

The district is located in the lowlands around Leipzig. The main rivers of the district are the Mulde, the Weiße Elster and the Pleiße.

List of minor planets: 10001–11000