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Spectrum





Encyclopedia results for Spectrum

  1. The Spectrum

    The Spectrum may refer to The Spectrum at Northlands Park The Spectrum Sirius XM , a channel on Sirius XM Radio The Spectrum USLS The Spectrum USLS , the student newspaper of the University of St. La Salle NDSU Spectrum NDSU Spectrum , the student newspaper of North Dakota State University The Spectrum , the student newspaper at Blake School Minneapolis, Minnesota The Blake School Spectrum arena , a closed sports venue in Philadelphia, Pennsylvania The Spectrum Utah The Spectrum , a newspaper in St. George, Utah See also Spectrum disambiguation disambig ...   more details



  1. Spectrum

    hatnote This article deals with the general meaning of spectrum and the history of its use. For other meanings and specific uses, see Spectrum disambiguation . Image Rainbow above Kaviskis Lake, Lithuania.jpg thumb right 180px The spectrum in a rainbow A spectrum plural spectra or spectrums ref http dictionary.reference.com browse spectrum Dictionary.com . The American Heritage Dictionary of the English ... been applied by analogy to many fields other than optics. Thus, one might talk about the spectrum of political spectrum political opinion , or the spectrum of activity of a drug, or the autism spectrum . In these uses, values within a spectrum may not be associated with precisely quantifiable numbers ... under a single title for ease of discussion. In most modern usages of spectrum there is a unifying ... did evolve from a unifying theme, but this may be difficult to recognize. Origins In Latin spectrum ... at Salem, Massachusetts in the late 17th century. The word spectrum Spektrum was strictly used ... thumb right 350px The spectrum of a uniform light source rendered into the sRGB color space. In the 17th century the word spectrum was introduced into optics , referring to the range of color s observed ... 350 px Mass spectrum of a peptide showing the isotopic distribution The term spectrum was expanded ... such as energy in electron spectroscopy or mass to charge ratio in mass spectrometry . Spectrum is also ... also commons category Spectrum Physical science Electromagnetic spectrum Visible spectrum or optical spectrum, a subset of the electromagnetic spectrum Emission spectrum observed in light Absorption spectrum observed in light Energy spectrum of a collection of particles particle physics Frequency spectrum of a signal Mass spectrum chemical analysis of atoms and molecules Power spectrum of a signal ... Economic spectrum Political spectrum of opinion Spectrum disorder , in psychiatry Mathematics Spectrum homotopy theory Spectrum of a matrix , in linear algebra Spectrum of an operator , in functional ...   more details



  1. Spectrum (disambiguation)

    wiktionary spectrum tocright A spectrum is a condition or value that is not limited to a specific set of values but can vary infinitely within a continuum. Spectrum may also refer to Physical science Electromagnetic spectrum Visible spectrum or optical spectrum, a subset of the electromagnetic spectrum Emission spectrum observed in light Absorption spectrum observed in light Spectral class of stars ... distribution of an illuminant Energy spectrum of a collection of particles particle physics Frequency spectrum of a signal Power spectrum of a signal Harmonic series music spectrum of sound energy ... spectrum , disparities between social classes Political spectrum of opinion Spectrum disorder , in psychiatry Mathematics Spectrum of a matrix , in linear algebra Spectrum functional analysis , a generalization of the concept of matrix eigenvalues to operators Spectrum homotopy theory Spectrum of a graph, studied in spectral graph theory Spectrum of a ring , in commutative algebra Spectrum of a C algebra Spectrum of a theory , in mathematical logic Stone space of boolean algebra Media IEEE Spectrum , a magazine Spectrum magazine Spectrum magazine , an independent Seventh day Adventist magazine Spectrum TV channel , a defunct Chicago area pay television broadcaster founded by United Cable Spectrum newspaper Spectrum newspaper , a defunct Toledo, Ohio weekly newspaper Spectrum 1958 TV series Spectrum 1958 TV series , a Canadian television series Spectrum Russian novel Spectrum Russian novel , a novel by Russian author Sergey Lukyanenko Spectrum liftout in The Sydney Morning Herald The Spectrum , the local daily newspaper in St. George, Utah Student newspapers The Spectrum USLS The Spectrum USLS , the student newspaper of the University of St. La Salle in the Philippines NDSU Spectrum , the student newspaper of the North Dakota State University The Spectrum newspaper The Spectrum newspaper ... , album by metal band Skyfire Spectrum band , an Australian group of the 1970s led by Mike Rudd Spectrum ...   more details



  1. Model spectrum

    Unreferenced stub auto yes date December 2009 Orphan date December 2009 A model spectrum is an artificial spectrum of a star made by recreating the absorption electromagnetic radiation absorption or emission electromagnetic radiation emission features seen in the spectrum. A model spectrum will usually be of a specific spectral type of star and may include other properties of the star, such as a surrounding nebula , presence or lack of an extended atmosphere or a circumstellar dust accretion disk disc . DEFAULTSORT Model Spectrum Category Stellar astronomy Astronomy stub ...   more details



  1. Apopestes spectrum

    Taxobox name Apopestes spectrum image Apopestes spectrum.jpg image width image caption regnum Animal ia phylum Arthropod a classis Insect a ordo Lepidoptera familia Noctuidae tribus genus Apopestes species A. spectrum binomial Apopestes spectrum binomial authority Eugenius Johann Christoph Esper Esper , 1787 synonyms Noctua spectrum Phalaena genistae Phalaena socrus Apopestes spectrum is a moth of the Noctuidae family. It is found from Maghreb , to western Turkey , Lebanon , Israel and Jordan . There is one generation per year. Adults are on wing from April to May. The larvae feed on Papilionaceae species, including Genista , Sarothamnus , Spaltium , Glycyrrhiza and Retama raetam . External links http kmk.entomology.ru pdf rej13 2004 ent13 3 20175 186 20Kravchenko.pdf Species info Category Toxocampina Catocalini stub de Apopestes spectrum nl Apopestes spectrum ...   more details



  1. Funa spectrum

    Italic title Taxobox name Funa spectrum image image caption regnum Animal ia phylum Mollusca classis Gastropoda unranked superfamilia clade Caenogastropoda br clade Hypsogastropoda br clade Neogastropoda superfamilia Conoidea familia Turridae subfamilia Crassispirinae genus Funa sea snails Funa species F. spectrum binomial Funa spectrum binomial authority Reeve, 1845 synonyms ref ref name WoRMS synonyms Pleurotoma spectrum small Reeve, 1845 small Funa spectrum is a species of sea snail , a marine gastropod mollusk in the family biology family Turridae , the turrids. ref name WoRMS WRMS species 433826 Funa spectrum Reeve, 1845 4 April 2010 ref Description Empty section date April 2010 Distribution Empty section date April 2010 References reflist External links Use dmy dates date January 2011 DEFAULTSORT Funa Spectrum Category Turridae Category Animals described in 1845 turridae stub pt Funa spectrum vi Funa spectrum ...   more details



  1. Fusinus spectrum

    Italic title Taxobox name Fusinus spectrum image image caption regnum Animal ia phylum Mollusca classis Gastropoda unranked superfamilia clade Caenogastropoda br clade Hypsogastropoda br clade Neogastropoda superfamilia Buccinoidea familia Fasciolariidae subfamilia Fusininae genus Fusinus species F. spectrum binomial Fusinus spectrum binomial authority A. Adams & Reeve, 1848 synonyms ref ref name WoRMS synonyms Fusus spectrum small A. Adams & Reeve, 1848 small br Fusus spectrum small Adams & Reeve, 1848 small Fusinus spectrum is a species of sea snail , a marine gastropod mollusk in the family biology family Fasciolariidae , the spindle snails, the tulip snails and their allies. ref name WoRMS WRMS species 448377 Fusinus spectrum A. Adams & Reeve, 1848 18 April 2010 ref Description Empty section date April 2010 Distribution Empty section date April 2010 References reflist External links Use dmy dates date January 2011 DEFAULTSORT Fusinus Spectrum Category Fasciolariidae Fasciolariidae stub vi Fusinus spectrum ...   more details



  1. Spectrum pooling

    Spectrum pooling is a spectrum management strategy in which multiple radio spectrum users can coexist within a single allocation of radio spectrum space. ref cite doi 10.1109 MCOM.2004.1273768 ref One use of this technique is for primary users of a spectrum allocation to be able to rent out use of unused parts of their allocation to secondary users. ref cite web title Dynamic Spectrum Access and Overlay Systems url http www.its.bldrdoc.gov isart art10 slides and videos10 Jondral Berthold Burgkhardt Weiss V2.pdf author Friedrich K. Jondral, Ulrich Berthold, Dennis Burgkhardt, Timo A. Wei ref Spectrum pooling schemes generally require cognitive radio techniques to implement them. ref cite web url http ursi france.institut telecom.fr pages pages evenements journees scient docs journees 2006 Jondral JS06.pdf title Cognitive Radio A Necessity for Spectrum Pooling author Friedrich K. Jondral date March 28, 2006 publisher Universit t Karlsruhe Communications Engineering Lab ref References reflist Category Radio spectrum radio comm stub ...   more details



  1. IDT Spectrum

    IDT Spectrum , a subsidiary of IDT Corp. IDT Corporation , holds and leases fixed wireless spectrum. History IDT Spectrum, Inc. and IDT Spectrum, LLC, are subsidiaries of IDT Corporation New York Stock ..., IDT Corporation through its subsidiary Winstar Holdings, LLC, acquired FCC spectrum licenses and other ... company, Winstar Spectrum, LLC, to hold its spectrum licenses and then caused the spectrum licenses ... Holdings formed IDT Spectrum, LLC, and caused Winstar Spectrum, LLC to transfer and assign to IDT Spectrum ... business. In January 2005, Winstar Holdings formed IDT Spectrum and contributed to IDT Spectrum all of its interests in IDT Spectrum, LLC, as well as other assets used in its connectivity services. ref ... 76baaeb6 2549 44f5 8e1d cd700701e704&cikid 683957&tabIndex 2&coname IDT SPECTRUM 2C INC.&fnid 46162&ipo 1 IDT SPECTRUM, INC listing at EDGAR Pro ref Current Holdings IDT Spectrum, LLC s primary holdings include 633 spectrum licenses in the 39  GHz range, as well as an additional 16 LMDS licenses ... spectrum in the United States. ref name FCC http wireless2.fcc.gov UlsApp UlsSearch results.jsp?licSearchKey licSearcKey20121151731720&curPage 2&reqPage 1 FCC listing for IDT Spectrum, LLC ref The FCC s 39  GHz auctioned license band spectrum is primarily licensed in Economic Areas, or EAs. EAs .... On average, IDT Spectrum holds more than 500  MHz of spectrum in the top 200 U.S. markets Economic Areas by population and approximately 940  MHz of spectrum in the top 50 U.S. markets. IDT Spectrum s 39  GHz holdings are contiguous across the United States including Alaska, Hawaii and Puerto Rico . ref name edgarpro In October 2010, IDT Spectrum renewed 633 of its 39  GHz licenses, which now expire in October 2020. ref name FCC The majority of IDT Spectrum s 28  GHz LMDS licenses expire in October 2018. Use of Licenses Among other business activities, IDT Spectrum leases the spectrum to customers who use their own microwave equipment. ref http biz.yahoo.com ic 140 140181.html ...   more details



  1. Spectrum management

    States radio spectrum frequency allocations chart as of 2003 Spectrum management is the process of regulating ... benefit. ref name CDW07 Martin Cave, Chris Doyle, William Webb, Modern Spectrum Management , Cambridge University Press, 2007 ISBN 0 521 87669 8 ref The term radio spectrum typically refers to the full ... of spectrum management. Demand for wireless broadband has soared due to technological innovation ... the 1930s, spectrum was assigned through administrative licensing. Limited by technology, signal interference was once considered as a major problem of spectrum use. Therefore, exclusive licensing ... of similar services is giving way, in many countries, to a spectrum auction model that is intended to speed technological innovation and improve the efficiency of spectrum use. During the experimental process of spectrum assignment, other approaches have also been carried out, namely, lotteries , unlicensed access and privatization of spectrum. Governments and spectrum management Most countries consider RF spectrum as an exclusive property of the state. The RF spectrum is a national resource ... of spectrum management is to mitigate radio spectrum pollution and maximize the benefit of usable radio spectrum. The first sentence of the International Telecommunication Union ITU constitution ... spectrum management requires regulation at national, regional and global levels. Goals of spectrum management include rationalize and optimize the use of the RF spectrum avoid and solve interference ... coordinate wireless communications with neighbours and other administrations. Radio spectrum items ... toward regional commissions such as CEPT in Europe, CITEL in America and toward ITU . RF spectrum ... versus market based spectrum management are found at the 2008 PhD thesis http eprints.mdx.ac.uk 133 2 MazarAug08.pdf . Spectrum use Spectrum management is a growing problem due to the growing number of spectrum uses. Over the air Broadcast television Broadcasting who started in 1920. Government and Research ...   more details



  1. Het Spectrum

    Het Spectrum is a Dutch publishing house. It publishes books, under its own name and two other trade marks Winkler Prins and Prisma. Since September 1999, Het Spectrum is a business unit within PCM Uitgevers PCM Algemene Boeken . Het Spectrum was established in 1935 by book sellers P.H. Bogaard and A.H. Bloemsma. From its humble beginnings in a room above a bakery in de Biltstraat in Utrecht city Utrecht the publishing developed to become one of the largest in the Netherlands. At Het Spectrum work about 50 employees. Het Spectrum started as a Progressivism progressive Catholicism Catholic e publisher that aspired to supply good reading materials to the masses. Hence it published many pocket books. After World War II , this formula continued as Prisma Pockets. Among the pocket books were translated classics for the modest price of 1,25 guilder . The Prisma dictionaries were also part of this line. Dutch authors published through Het Spectrum include Godfried Bomans , Han van Bree, Hubrecht Duijker, L. T. F. Gamut a pseudonym of five authors together , Ben Tiggelaar, and Janwillem van de Wetering . International authors include Dorothy Parker , Dr. Phil , Peter Singer , Edgar Wallace , and P. G. Wodehouse . External links http www.spectrum.nl Het Spectrum Category Publishing companies of the Netherlands Het Spectrum de Het Spectrum nl Uitgeverij Het Spectrum ...   more details



  1. Discrete spectrum

    Unreferenced date December 2009 For a mathematically rigorous point of view of discrete spectrum , see decomposition of spectrum functional analysis . In physics, an elementary and accurate explanation of a discrete spectrum is that it is an emission spectrum or absorption spectrum for which there is only an integer number or countable number of intensities. Atomic electronic absorption and emission spectrum are discrete, as contrasted with, for example, the emission spectrum of the sun, which is continuous. Discrete emission spectra of atoms are also referred to as emission line spectra, which show vertical lines at the frequencies or wavelengths of emission. To describe the difference between continuous and discrete spectra, we might refer to probability theory measuring weight versus throwing dice. Conceivably, our body weights can be represented by any number, 50.00000 kilograms, 59.99999 ... of all possible single die tosses is discrete. One segment of the emission spectrum of atomic hydrogen is shown below. Note that we see only four lines. File Emission spectrum H.svg 757px thumb none Emission spectrum of Hydrogen By contrast, the solar spectrum, the spectrum of electromagnetic frequencies ... irradiance spectrum above atmosphere and at surface When we can visualize discrete spectra and continuous ..., for example, as used below. In physics , discrete spectrum is a finite set or a countable ... to have a discrete spectrum if its spectrum consists of isolated point s. If the spectrum of an operator is not discrete, we say that it is a continuous spectrum . The position operator position and the momentum ... systems the corresponding eigenstates are called bound state have a discrete quantized spectrum. This is a major ... of physical systems in which the Hamiltonian has a discrete spectrum. In the case of the Hydrogen atom, it has both continuous as well as discrete part of the spectrum the continuous part represents the ion ized atom. DEFAULTSORT Discrete Spectrum Category Spectral theory ...   more details



  1. Continuous spectrum

    no footnotes date December 2011 unreferenced date December 2011 The Spectrum functional analysis spectrum of a linear operator is commonly divided into three parts point spectrum, continuous spectrum, and residual spectrum. If math H math is a topological vector space and math A H to H math is a linear map, the spectrum of math A math is the set of complex numbers math lambda math such that math A lambda I H to H math is em not em invertible. We divide the spectrum depending on why this is not invertible. If math A lambda I math is not injective , we say that math lambda math is in the point spectrum of math A math . Elements of the point spectrum are called eigenvalues of math A math and non zero elements of the null space of math A lambda I math are known as eigenvectors of math A math . Thus math lambda math is an eigenvalue of math A math if and only if there is a non zero vector math ... is dense in math H math , we say that math lambda math is in the continuous spectrum of math A math . The union of the point spectrum and the continuous spectrum is known as the set of generalized ... in math H math , we say that math lambda math is in the residual spectrum of math A math . Quantum mechanical interpretations The position operator usually has a continuous spectrum, much like the momentum ... s, tend to have a discrete quantized spectrum that is where the name quantum mechanics comes from ... requires the computation of the non quantized or continuous spectrum density of states of the Hamiltonian ... systems in which the Hamiltonian has a discrete spectrum. In the case of the hydrogen atom, it has both continuous as well as discrete part of the spectrum the continuous part represents the ionized ... line spectra Emission spectrum Absorption spectrum Mathematically rigorous point of view Decomposition of spectrum functional analysis References reflist Category Scattering theory he nl Continu spectrum pt Espectro cont nuo ...   more details



  1. World of Spectrum

    Infobox Website name World of Spectrum favicon logo screenshot caption url http www.worldofspectrum.org commercial No type Retrocomputing registration Forum posting only owner Martijn van der Heide author launch date 1995 current status Active revenue World of Spectrum is a website devoted to cataloging and archiving material for the ZX Spectrum home computer popular in the 1980s, and has been officially endorsed by Amstrad which holds the rights to the ZX Spectrum brand. ref cite web url http www.worldofspectrum.org permits endorsement.html title Endorsement accessdate 4 August 2008 last van der Heide first Martijn work World of Spectrum ref It was started by Martijn van der Heide in 1995 as a website dedicated to hosting Spectrum games, but grew into hosting anything and everything that was remotely connected to the ZX Spectrum. The site contains an extensive database of information about ... 2002 ref ref The Daily Mirror , 23 October 2001 ref In December 2005 Retro Gamer wrote World of Spectrum ... popular archive of Spectrum related material. ref cite web url http www.worldofspectrum.org WoSFAQ.html 1A title THE WOS FAQ accessdate 25 February 2012 last van der Heide first Martijn work World of Spectrum ... accessdate 6 September 2008 last van der Heide first Martijn work World of Spectrum ref The collection of Spectrum related magazines includes CRASH magazine CRASH , Sinclair User , and Your Sinclair ... Permissions Individual Programmers Artists publisher World of Spectrum date accessdate 8 February ... 2003 03 07 games anti piracy bot fingers title Games anti piracy bot fingers ZX Spectrum archive site ... References reflist External links http www.worldofspectrum.org World of Spectrum use dmy dates date ... Category Online game databases Category ZX Spectrum videogame culture stub Videogame website stub cs World of Spectrum es World of Spectrum fr World of Spectrum pl World of Spectrum ru World of Spectrum sv World of Spectrum ...   more details



  1. Chicoreus spectrum

    Italic title Taxobox name Chicoreus Triplex spectrum image image caption regnum Animal ia phylum Mollusca classis Gastropoda unranked superfamilia clade Caenogastropoda br clade Hypsogastropoda br clade Neogastropoda superfamilia Muricoidea familia Muricidae subfamilia Muricinae genus Chicoreus subgenus Triplex subgenus Triplex species C. spectrum binomial Chicoreus Triplex spectrum binomial authority Reeve, 1846 synonyms ref ref name WoRMS synonyms Murex Chicoreus argo small Clench & Farfante, 1945 small Murex argo Clench & Farfante, 1945 Murex imbricatus small Higgins & Marratt, 1877 small Murex spectrum small Reeve, 1846 small Chicoreus Triplex spectrum is a species of sea snail , a marine gastropod mollusk in the family biology family Muricidae , the murex snails or rock snails. ref name WoRMS WRMS species 405926 Chicoreus Triplex spectrum Reeve, 1846 20 December 2010 ref Description The shell size varies between 23  mm and 165  mm Expand section date April 2010 Distribution This species is distributed in the Caribbean Sea and the Lesser Antilles in the Atlantic Ocean along Brazil . References reflist External links Use dmy dates date January 2011 DEFAULTSORT Chicoreus Spectrum Category Muricidae Muricidae stub fr Chicoreus spectrum vi Chicoreus spectrum ...   more details



  1. Harmonic spectrum

    A harmonic spectrum is a spectrum of an operator spectrum containing only frequency components whose frequency frequencies are whole number multiples of the fundamental frequency such frequencies are known as harmonic s. In other words, if math omega , math is the fundamental frequency, then a harmonic spectrum has the form math dots, 2 omega, omega, 0, omega, 2 omega, dots . math A standard result of Fourier analysis is that a function has a harmonic spectrum if and only if it is periodic function periodic . See also Fourier series Harmonic series music Periodic function Scale of harmonics Mathanalysis stub Signal processing stub Category Functional analysis ...   more details



  1. Sphere spectrum

    In stable homotopy theory , a branch of mathematics , the sphere spectrum S is the smallest nontrivial spectrum homotopy theory spectrum . It is the suspension spectrum of S sup 0 sup , i.e., a set of two points. Explicitly, the n th space in the sphere spectrum is the n dimensional sphere geometry sphere S sup n sup , and the structure maps from the suspension mathematics suspension of S sup n sup to S sup n 1 sup are the canonical homeomorphism s. References citation mr 402720 last Adams first J. Frank authorlink Frank Adams title Stable homotopy and generalised homology publisher University of Chicago Press series Chicago Lectures in Mathematics year 1974 Category Algebraic topology Category Homotopy theory topology stub ...   more details



  1. Dirac spectrum

    In mathematics , a Dirac spectrum , named after Paul Dirac , is the spectrum of eigenvalue s of a Dirac operator on a Riemannian manifold with a spin structure . The isospectral problem for the Dirac spectrum asks whether two Riemannian spin manifolds have identical spectra. The Dirac spectrum depends on the spin structure in the sense that there exists a Riemannian manifold with two different spin structures that have different Dirac spectra. ref cite journal url http www.emis.de journals SC 2000 4 pdf smf sem cong 4 17 33.pdf title Dependence of the Dirac spectrum on the spin structure author Bar year 2000 ref See also Can you hear the shape of a drum? Dirichlet eigenvalue Spectral asymmetry ARPES Angle resolved photoemission spectroscopy References reflist Category Spectral theory Category Quantum mechanics quantum stub mathanalysis stub ...   more details



  1. Essential spectrum

    In mathematics , the essential spectrum of a bounded operator is a certain subset of its spectrum functional analysis spectrum , defined by a condition of the type that says, roughly speaking, fails badly to be invertible . The essential spectrum of self adjoint operators In formal terms, let X be a Hilbert ... . Definition The essential spectrum of T , usually denoted sub ess sub T , is the set of all complex ... The essential spectrum is always closed set closed , and it is a subset of the spectrum functional analysis spectrum . Since T is self adjoint, the spectrum is contained on the real axis. The essential spectrum is invariant under compact perturbations. That is, if K is a Compact operator on Hilbert .... This explains why it is called the essential spectrum Hermann Weyl Weyl 1910 originally defined the essential spectrum of a certain differential operator to be the spectrum independent of boundary conditions. Weyl s criterion for the essential spectrum is as follows. First, a number is in the spectrum ... spectrum if there is a sequence satisfying this condition, but such that it contains no convergent ... such a sequence is called a singular sequence . The discrete spectrum The essential spectrum is a subset of the spectrum , and its complement is called the discrete spectrum , so math sigma mathrm discr T sigma T setminus sigma mathrm ess T . math A number is in the discrete spectrum if it is an isolated ... imply that and are equal. The essential spectrum of general bounded operators In the general case ... spectrum in the literature, which are not equivalent. The essential spectrum sub ess,1 sub ... range is closed and its kernel or its cokernel is finite dimensional . The essential spectrum ... &minus T is infinite dimensional. The essential spectrum sub ess,3 sub T is the set of all ... and its cokernel are finite dimensional . The essential spectrum sub ess,4 sub T is the set of all ... between the dimension of the kernel and the dimension of the cokernel . The essential spectrum ...   more details



  1. Open spectrum

    Open spectrum also known as free spectrum is a movement to get the Federal Communications Commission to provide more unlicensed spectrum unlicensed , radio frequency electromagnetic spectrum spectrum that is available for use by all. Proponents of the commons model of open spectrum advocate a future where all the spectrum is shared, and in which people use Internet protocols to communicate with each other, and smart devices, which would find the most effective energy level, frequency, and mechanism ..., or even broadcast their own website. A notable advocate for Open Spectrum is Lawrence Lessig . National governments currently allocate bands of spectrum sometimes based on guidelines from the International ..., most notably, a limit on total transmission power. Unlicensed spectrum is Decentralisation decentralized there are no license payments or central control for users. However, sharing spectrum between ... users of unlicensed spectrum include cordless telephones, and baby monitors. A collection of new technologies are taking advantage of unlicensed spectrum including Wi Fi , Ultra Wideband , spread spectrum , software defined radio , cognitive radio , and mesh networks . ref citeweb title Open Spectrum A Path to Ubiquitous Connectivity url http www.acmqueue.org modules.php?name Content&pa showpage&pid 37 publisher acmqueue.org accessdate 2008 02 26 ref Phaseout of Open spectrum hoax Although it was reported that Congress has passed a new law which will ban the use of all open spectrum by 2012 ... of the spectrum most useful for observing the Universe are mostly carried out by the international ... Open Spectrum FAQ http openspectrum.org.uk Open Spectrum UK http openspectrum.eu Open Spectrum Alliance public interest, non profit which pushes for open spectrum at EU level and national level in the EU http www.reed.com dpr locus OpenSpectrum David P. Reed s Open Spectrum resource ... resource management it Open Spectrum no Fritt radiospektrum ...   more details



  1. Spectrum Radio

    refimprove date March 2012 Infobox company Broadcast area Greater London Frequency kHz kHz Sky 0133 First air date 1989 Format Multi Language Speech and Music Audience share 1 March 2009, 1 Owner Spectrum Radio Group location city London location country UK homepage http www.spectrumradio.net dissolved footnotes Spectrum Radio is a multi ethnic radio station based in London , which covers over 20 different ethnic communities. ref cite web url http www.mondotimes.com 1 world uk 142 4217 27043 title Spectrum Radio publisher Mondotimes accessdate 5 March 2012 ref Transmission Spectrum Radio broadcasts multicultural ethnic programming on three different broadcast platforms on 558  kHz from the Crystal Palace transmitting station , on SKY Digital Channel 0185 and DAB Digital Radio . Programmes are also available to download as Podcasts through iTunes. An online Schedule Page lists the running order of programmes. Each Ethnic group broadcaster designs programmes to suit the needs of its own audiences, which may be in English or the relevant community language. Programmes Spectrum Radio is distinguished by its multiethnic, foreign language programmes, many of which have been on air since its launch in 1989. Some programmes broadcast on Spectrum via the WRN Broadcast World Radio Network but many of the station s in house broadcasts are available to Listen Again on the Spectrum Media Player provided by London Ethnic Radio or to download as Podcasts via ITunes . These include Tikkun Spectrum Jewish Radio Fatima Muslim IBC Tamil, Chinese Spectrum Cantonese, Mandarin, English , Irish Spectrum, The London Ceilidh Scottish , Somali on Air, Radio Focus Ghanaian , Amrit Vela Radio Sikh , Negat Ethiopia Radio, Arabic Spectrum, Brazil News & Paradise Club Mauritian References reflist coord 51 28 28 N 0 8 47 W type landmark region GB WND display title Category Radio stations in London Category Multilingual broadcasters United Kingdom ...   more details



  1. Conus spectrum

    Italic title Taxobox name Conus spectrum image Conus spectrum 001.jpg image caption regnum Animal ia phylum Mollusca classis Gastropoda unranked superfamilia clade Caenogastropoda br clade Hypsogastropoda br clade Neogastropoda superfamilia Conoidea familia Conidae subfamilia Coninae genus Conus species C. spectrum binomial Conus spectrum binomial authority Linnaeus, 1758 synonyms ref ref name WoRMS WRMS species 215432 Conus spectrum Linnaeus, 1758 27 March 2010 ref synonyms Conus inflatus small G. B. Sowerby II, 1833 small br Conus pica small A. Adams & Reeve, 1848 small br Cucullus carota small R ding, 1798 small Conus spectrum is a species of sea snail , a marine gastropod mollusk in the family biology family Conidae , the Conus cone snails and their allies. ref name WoRMS Like all species within the genus Conus , these snails are predatory and venomous . They are capable of stinging humans, therefore live ones should be handled carefully or not at all. Description Empty section date March 2010 Distribution Empty section date March 2010 References reflist External links http biology.burke.washington.edu conus catalogue index.php The Conus Biodiversity website Use dmy dates date January 2011 DEFAULTSORT Conus Spectrum Category Conus spectrum Category Animals described in 1758 conus stub fr Conus spectrum nl Conus spectrum pt Conus spectrum vi Conus spectrum ...   more details



  1. Software Spectrum

    Notability date December 2008 Software Spectrum is a company acquired by Level 3 Communications in 2002. Insight Enterprises purchased Software Spectrum from Level 3 Communications in September 2006. ref http www.insight.com Insight ref It is the world s largest Microsoft Large Account Reseller LAR . In addition, the company sells a full array of software for Personal computer PC s and Server computing server s, including Adobe, Symantec and Trend Micro . ref http www.softwarespectrum.com Software Spectrum ref Software Spectrum previously traded under the symbol SSPE is located in Garland, Texas and have offices in Spokane, Washington. They also had support contracts for Microsoft products. References reflist Category Companies based in Texas ict company stub ...   more details



  1. NDSU Spectrum

    Other uses The Spectrum disambiguation The Spectrum is the student run newspaper of North Dakota State University in Fargo, North Dakota . The Spectrum has been in publication since 1896. Its oversight committee is the Board of Student Publications BOSP made up of a rotating group of four faculty members and five students and receives a portion of the student activity fee as a means to subsidize its production. The Board Of Student Publications is also responsible for hiring and firing the editor in chief. External links http www.ndsuspectrum.com The Spectrum website North Dakota State University Category North Dakota State University Category Newspapers published in North Dakota NorthDakota newspaper stub ...   more details



  1. Phasmatocoris spectrum

    Italic title Taxobox name Phasmatocoris spectrum regnum Animal ia phylum Arthropod a classis Insect a ordo Hemiptera familia Reduviidae tribus Emesini genus Phasmatocoris species P. spectrum binomial Phasmatocoris spectrum binomial authority Breddin , 1904 Phasmatocoris spectrum is a thread legged bug species from the genus Phasmatocoris . It is found in South America , having been recorded in Brazil , Colombia , Bolivia , and Venezuela . The Colombia record was taken from a Palma Real Scheelea sp. Arecaceae tree in the forest interior. ref cite web url http www.uky.edu mjshar0 colombia Forero2006.pdf title New records of Reduviidae Hemiptera Heteroptera from Colombia and other Neotropical countries author Dimitri Forero publisher Zootaxa 1107 1 47 2006 date 2006 ref References reflist Category Reduviidae Hemiptera stub ...   more details




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