LEADER 01922nam 2200565Ia 450 001 9910700337003321 005 20110705151424.0 035 $a(CKB)5470000002409618 035 $a(OCoLC)738504470 035 $a(EXLCZ)995470000002409618 100 $a20110705d2010 ua 0 101 0 $aeng 135 $aurcn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aCOMPASS final report$b[electronic resource] $eLunar Communications Terminal (LCT) /$fSteven R. Oleson and Melissa L. McGuire 210 1$aCleveland, Ohio :$cNational Aeronautics and Space Administration, Glenn Research Center,$d[2010] 215 $a1 online resource (iv, 33 pages) $ccolor illustrations 225 1 $aNASA TM ;$v2010-216236 300 $aTitle from title screen (viewed on July 5, 2011). 300 $a"December 2010." 300 $a"CD-2007-11." 517 $aCOMPASS final report 606 $aLunar communication$2nasat 606 $aLunar satellites$2nasat 606 $aTelecommunication$2nasat 606 $aRelay satellites$2nasat 606 $aAerospace systems$2nasat 606 $aLunar bases$2nasat 606 $aExtremely high frequencies$2nasat 606 $aSuperhigh frequencies$2nasat 615 7$aLunar communication. 615 7$aLunar satellites. 615 7$aTelecommunication. 615 7$aRelay satellites. 615 7$aAerospace systems. 615 7$aLunar bases. 615 7$aExtremely high frequencies. 615 7$aSuperhigh frequencies. 700 $aOleson$b Steven R$g(Steven Robert),$f1964-$01391501 701 $aMcGuire$b Melissa L$01391502 712 02$aCOMPASS (Team : NASA Glenn Research Center) 712 02$aNASA Glenn Research Center. 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910700337003321 996 $aCOMPASS final report$93445337 997 $aUNINA LEADER 03255oam 2200481 450 001 9910418317203321 005 20230621135710.0 010 $a9783832549718 024 8 $ahttps://doi.org/10.30819/4971 035 $a(CKB)4100000011479711 035 $a(oapen)https://directory.doabooks.org/handle/20.500.12854/64426 035 $a(ScCtBLL)b9ce4a60-9be4-4a3c-af98-416064d36872 035 $a(EXLCZ)994100000011479711 100 $a20210223h20192019 fy 0 101 0 $aeng 135 $aur||#|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aInvestigation on the dissemination of unit watt in airborne sound and applications /$fSpyros Brezas 210 $aBerlin/Germany$cLogos Verlag Berlin$d2019 210 1$aBerlin, Germany :$cLogos Verlag Berlin GmbH,$d[2019] 210 4$d©2019 215 $a1 online resource (iv, 197 pages) $cillustrations, charts; digital file(s) 225 0 $aAachener Beitrage zur Akustik 300 $aAuthor's doctoral thesis, Rheinisch-Westfa?lische Technische Hochschule Aachen. 311 08$aPrint version: 3832549714 320 $aIncludes bibliographical references. 330 $aSound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming at the establishment of traceability in airborne sound. This will enable the characterization of a sound source by its free field sound power. The dissertation describes a study on the dissemination process, which will allow the sound power of a device under test located at a real surrounding environment, to be referred to its free field sound power. Apart from the sound power, the corresponding uncertainty may be estimated in a transparent way, where each uncertainty component is provided. The basic tool for the dissemination process is the substitution method using aerodynamic reference sound sources, applied to both sound pressure and sound intensity measurements. Initially, a theoretical investigation deals with the factors that influence the substitution method. Experimental results are then presented based on measurements using a specially designed scanning apparatus. The transition from calibration to in situ conditions and the required correction, due to changes in environmental and operational conditions, is then discussed. In the last section, the sound power level of devices under test is determined along with its related uncertainty, which is further compared to the up-to-date uncertainty values. 606 $aEngineering$xAcoustics 610 $asound power 610 $asubstitution 610 $acorrection 610 $auncertainty 610 $atraceability 615 0$aEngineering$xAcoustics. 676 $a620.2 700 $aBrezas$b Spyros$0929733 712 02$aRheinisch-Westfa?lische Technische Hochschule Aachen, 801 0$bUkMaJRU 912 $a9910418317203321 996 $aInvestigation on the dissemination of unit watt in airborne sound and applications$92089901 997 $aUNINA LEADER 01363nam0 2200313 i 450 001 IEI0096796 005 20240906062917.0 020 $aIT$b96-9562 100 $a20000509d1995 ||||0itac50 ba 101 | $aita 102 $ait 181 1$6z01$ai $bxxxe 182 1$6z01$an 200 1 $aRisorse e sviluppo in Giordania$fa cura di Rosario Sommella 210 $aNapoli$cIstituto di geografia dell'Universitą Federico II$dstampa 1995 215 $a272 p., VIII p. di tav.$cill.$d24 cm 225 | $aMemorie di geografia economica e antropica$i. 3. ser$v4 300 $aSegue: Appendice. 410 0$1001CFI0171241$12001 $aMemorie di geografia economica e antropica$i. 3. ser$v4 606 $aGIORDANIA$xEconomia$x1950-1990$2FIR$3NAPC132245$9I 676 $a330.95695043$9SITUAZIONI E CONDIZIONI ECONOMICHE. Giordania. 1946-$v20 702 1$aSommella$b, Rosario$3IEIV043247 801 3$aIT$bIT-NA0079$c20000509 850 $aIT-BN0095 $aIT-NA0079 $aIT-BN0015 912 $aIEI0096796 950 0$aBiblioteca Centralizzata di Ateneo$c1 v.$d 01POZZO LIB.ECON MON 9855$e 0101 0000093885 B 1 v. (precedente collocazione: GUERRAZZI B 703)$fT $h20071205$i20071205 977 $a 01$a BN$a PB 996 $aRisorse e sviluppo in Giordania$963718 997 $aUNISANNIO