LEADER 01072nam0M2200373--I450- 001 990002437490203316 005 20050615160351.0 010 $a88-430-1706-3 035 $a000243749 035 $aUSA01000243749 035 $a(ALEPH)000243749USA01 035 $a000243749 100 $a20050615d2000----||itac0103 ba 101 $aita 102 $aIT 105 $a||||||||001yy 200 1 $a<> estraneo di fiducia$ecompetenze e responsabilita dell'assistente sociale$fMarisa Pittaluga 210 $aRoma$cCarocci$d2000 215 $a140 p.$d24 cm. 225 0 $a<> servizio sociale$v57 410 1$12001$a<> servizio sociale$v57 454 1$12001 461 1$1001-------$12001 606 $aAssistenti sociali$xProfessione 676 $a361.32023 700 1$aPITTALUGA,$bMarisa$0472096 801 0$aIT$bICCU$gISBD$c20040213 912 $a990002437490203316 951 $aCOLL VI h 57$b2947 DIRCE 959 $aBK 969 $aDIRCE 979 $aDIRCE$b90$c20050615$lUSA01$h1603 996 $aEstraneo di fiducia$9231178 997 $aUNISA LEADER 02411nam 2200397 450 001 9910136317203321 005 20231206213944.0 010 $a1-5044-0238-3 024 70$a10.1109/IEEESTD.1966.7393375 035 $a(CKB)3710000000578030 035 $a(NjHacI)993710000000578030 035 $a(EXLCZ)993710000000578030 100 $a20231206d1966 uy 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aIEEE No 268-1966 $eIEEE Recommended Practice for Units in Published Scientific and technical Work /$fIEEE 210 1$aPiscataway, NJ :$cIEEE,$d1966. 215 $a1 online resource (8 pages) 225 1 $aIEEE Std ;$vNumber 268-1966 330 $aThis document is a companion to Technical Committee Report on Recommended Practices for Burst Measurements in the Time Domain, IEEE No. 257, May 1964. In the time domain document, bursts are defined and particular attention is placed on their duration and magnitude. The use of additional characteristics may prove desirable when investigating both cause and effect of a burst. Mathematical transformations have been widely used to bring out particular characteristics of signals. Perhaps the one most commonly used is the Fourier Transform, which defines the spectrum of signals. The energy density spectrum of a burst, a quantity derived from the Fourier Transform, is the subject of this report. Other transformations such as those of Hilbert or Henkel, may be used to display different characteristics of a burst but they will not be considered here. Sampling the energy density spectrum is the key concept of this document. It constitutes the basis by which this spectrum can be characterized comprehensively by a practical number of measurements. The sampling theorems in the frequency domain are, therefore, given detailed consideration in Appendices to the extent necessary for understanding the measurement methods to be discussed. 410 0$aIEEE Std ;$vNumber 268-1966. 517 $aIEEE No 268-1966 606 $aUnits of measurement 606 $aMeasurement$xStandards 615 0$aUnits of measurement. 615 0$aMeasurement$xStandards. 676 $a530.8 801 0$bNjHacI 801 1$bNjHacl 906 $aDOCUMENT 912 $a9910136317203321 996 $aIEEE No 268-1966$93647224 997 $aUNINA LEADER 04040nam 22007335 450 001 9910299465003321 005 20250609111420.0 010 $a3-319-04855-4 024 7 $a10.1007/978-3-319-04855-0 035 $a(CKB)3710000000134630 035 $a(EBL)1782193 035 $a(SSID)ssj0001274427 035 $a(PQKBManifestationID)11707280 035 $a(PQKBTitleCode)TC0001274427 035 $a(PQKBWorkID)11324602 035 $a(PQKB)10572732 035 $a(MiAaPQ)EBC1782193 035 $a(DE-He213)978-3-319-04855-0 035 $a(PPN)179764616 035 $a(MiAaPQ)EBC6234114 035 $a(EXLCZ)993710000000134630 100 $a20140620d2014 u| 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aParametric Packet-based Audiovisual Quality Model for IPTV services /$fby Marie-Neige Garcia 205 $a1st ed. 2014. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2014. 215 $a1 online resource (249 p.) 225 1 $aT-Labs Series in Telecommunication Services,$x2192-2810 300 $aDescription based upon print version of record. 311 08$a1-322-13424-3 311 08$a3-319-04854-6 320 $aIncludes bibliographical references. 327 $aIntroduction -- Quality engineering -- Model Framework -- Audio Quality Model -- Video Quality Model -- Audiovisual Quality Model -- Conclusion and Outlook. 330 $aThis volume presents a parametric packet-based audiovisual quality model for Internet Protocol TeleVision (IPTV) services. The model is composed of three quality modules for the respective audio, video and audiovisual components. The audio and video quality modules take as input a parametric description of the audiovisual processing path, and deliver an estimate of the audio and video quality. These outputs are sent to the audiovisual quality module which provides an estimate of the audiovisual quality. Estimates of perceived quality are typically used both in the network planning phase and as part of the quality monitoring. The same audio quality model is used for both these phases, while two variants of the video quality model have been developed for addressing the two application scenarios. The addressed packetization scheme is MPEG2 Transport Stream over Real-time Transport Protocol over Internet Protocol. In the case of quality monitoring, that is the case for which the network is already set-up, the audiovisual stream is encrypted either at the level of Packetized Elementary Stream or of the Transport Stream. The presented model became standardized under the ITU-T P.1201 and P.1201.2 recommendations. 410 0$aT-Labs Series in Telecommunication Services,$x2192-2810 606 $aElectrical engineering 606 $aComputers 606 $aSignal processing 606 $aImage processing 606 $aSpeech processing systems 606 $aCommunications Engineering, Networks$3https://scigraph.springernature.com/ontologies/product-market-codes/T24035 606 $aInformation Systems and Communication Service$3https://scigraph.springernature.com/ontologies/product-market-codes/I18008 606 $aSignal, Image and Speech Processing$3https://scigraph.springernature.com/ontologies/product-market-codes/T24051 615 0$aElectrical engineering. 615 0$aComputers. 615 0$aSignal processing. 615 0$aImage processing. 615 0$aSpeech processing systems. 615 14$aCommunications Engineering, Networks. 615 24$aInformation Systems and Communication Service. 615 24$aSignal, Image and Speech Processing. 676 $a006.7876 700 $aGarcia$b Marie-Neige$4aut$4http://id.loc.gov/vocabulary/relators/aut$0948380 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910299465003321 996 $aParametric Packet-based Audiovisual Quality Model for IPTV services$92143751 997 $aUNINA