LEADER 01766nam 2200553 a 450 001 9910455777803321 005 20200520144314.0 010 $a1-280-22183-6 010 $a9786610221837 010 $a0-309-54259-6 010 $a0-585-14291-2 035 $a(CKB)110986584750762 035 $a(OCoLC)44965973 035 $a(CaPaEBR)ebrary10062848 035 $a(SSID)ssj0000100735 035 $a(PQKBManifestationID)11111469 035 $a(PQKBTitleCode)TC0000100735 035 $a(PQKBWorkID)10038393 035 $a(PQKB)10885501 035 $a(MiAaPQ)EBC3376963 035 $a(Au-PeEL)EBL3376963 035 $a(CaPaEBR)ebr10062848 035 $a(OCoLC)940510410 035 $a(EXLCZ)99110986584750762 100 $a19860917d1986 uy 0 101 0 $aeng 135 $aurcn||||||||| 181 $ctxt 182 $cc 183 $acr 200 14$aThe airliner cabin environment$b[electronic resource] $eair quality and safety /$fCommittee on Airliner Cabin Air Quality, Board on Environmental Studies and Toxicology, Commission on Life Sciences, National Research Council 210 $aWashington, D.C. $cNational Academy Press$d1986 215 $a1 online resource (319 p.) 300 $aBibliographic Level Mode of Issuance: Monograph 311 $a0-309-03690-9 320 $aIncludes bibliographies. 606 $aAircraft cabins$xHealth aspects 606 $aIndoor air pollution 608 $aElectronic books. 615 0$aAircraft cabins$xHealth aspects. 615 0$aIndoor air pollution. 676 $a363.7/293 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910455777803321 996 $aThe airliner cabin environment$92139351 997 $aUNINA LEADER 05424nam 2200673 450 001 9910451042703321 005 20200520144314.0 010 $a1-58053-884-3 035 $a(CKB)1000000000340616 035 $a(EBL)231650 035 $a(OCoLC)559857371 035 $a(SSID)ssj0000279209 035 $a(PQKBManifestationID)11211222 035 $a(PQKBTitleCode)TC0000279209 035 $a(PQKBWorkID)10260029 035 $a(PQKB)10434510 035 $a(MiAaPQ)EBC231650 035 $a(Au-PeEL)EBL231650 035 $a(CaPaEBR)ebr10081970 035 $a(OCoLC)936897013 035 $a(CaBNVSL)mat09100252 035 $a(IEEE)9100252 035 $a(EXLCZ)991000000000340616 100 $a20200730d2004 uy 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aEssentials of Modern Telecommunications Systems 210 1$aNorwood :$cArtech House,$d2004. 210 2$a[Piscataqay, New Jersey] :$cIEEE Xplore,$d[2004] 215 $a1 online resource (393 p.) 225 1 $aArtech House telecommunications library 300 $aDescription based upon print version of record. 311 $a1-58053-491-0 320 $aIncludes bibliographical references and index. 327 $aBookmarks; Contents; Foreword; Preface; Acknowledgments; 1 -- The Communication Channel and the Communication Network 1; 1.1 Development of Telecommunications 1; 1.2 Introduction to Telecommunications 4; 1.3 Signals in Communications 5; 1.4 Characteristics of the Communications Channel 10; 1.5 The Communications Network 22; 1.6 The Future 24; 1.7 Enabling Technologies 27; 2 -- Digital Telephony 29; 2.1 From Analog to Digital 29; 2.2 Advantages of Digital Techniques 31; 2.3 Disadvantages of Digital Techniques 34; 2.4 PCM Techniques and Standards 35; 2.5 Low Bit-Rate Voice Coding 44. 327 $a2.6 Voice over the Internet 562.7 Devices for Digital Telephony 73; 3 -- Switching and Signaling Systems 99; 3.1 Evolution of Switching Systems 99; 3.2 Essentials of Switching, Signaling, and Control 100; 3.3 Principles of Switching 101; 3.4 Circuit Switching and Packet Switching 105; 3.5 Signaling Systems 107; 3.6 Digital Exchanges 112; 3.7 Private Branch Exchanges and Key Phone Systems 119; 3.8 Merging Data and Voice 121; 3.9 Packet Switching Systems 121; 3.10 Switch Fabric Interfaces and ICs 137; 3.11 Optics and the Future 139; 4 -- Cellular Systems 143; 4.1 Introduction 143. 327 $a4.2 Advantages and Constraints of Wireless Access 1434.3 Basic Components of Wireless Access 144; 4.4 Cellular Systems as an Access Technology 145; 4.5 Cellular System Operation 151; 4.6 The Cellular Radio Environment 155; 4.7 Frequency Assignment and Multiple Access Schemes for Cellular Systems 163; 4.8 Capacity of Cellular Systems 168; 4.9 First Generation Cellular Systems and Standards 169; 4.10 Second Generation Digital Cellular Systems 172; 4.11 Third Generation Mobile Systems 182; 4.12 Mobile Device Hardware, Architecture, and Implementation 188; 4.13 Technological Trends 192. 327 $a5 -- Fixed Wireless Access 1975.1 Introduction 197; 5.2 Access Technologies 198; 5.3 WLL Technologies Primarily for Voice Provision 200; 5.4 Broadband Fixed Wireless Access Systems 207; 5.5 Enabling Technologies 217; 5.6 The Future 220; 6 -- Digital Subscriber Loop 223; 6.1 Introduction 223; 6.2 Signal Impairments and the Channel Length 223; 6.3 DSL Techniques 229; 6.4 Different Versions of DSL 239; 6.5 Spectral Considerations in DSL 247; 6.6 Operation of DSL 250; 6.7 DSL Chip Sets 254; 6.8 The ISO Seven-Layer Model, ATM, and DSL Systems 264; 6.9 End-to-End ADSL Systems 264; 6.10 Standards 265. 327 $a7 -- Transmission Techniques 2717.1 Introduction 271; 7.2 Transmission Line Behavior 271; 7.3 Decibel Measurements 273; 7.4 Basic TDM Techniques and Digital Transmission Systems 274; 7.5 Plesiochronous Higher-Order Digital Multiplexing or PDH 279; 7.6 Synchronous Digital Multiplexing 281; 7.7 Optical Networks 287; 7.8 The Future 290; 8 -- Telecommunication Systems Testing 293; 8.1 Introduction 293; 8.2 Measurement Areas 293; 8.3 Measurement of Power Levels in Telecommunications Circuits 294; 8.4 High-Frequency Power Measurements 296. 330 $aIn today's competitive and fast-changing telecom industry, most professionals find themselves in the difficult situation of having to sacrifice keeping on top of the latest technology because they are striving to meet another round of high-pressure deadlines. Essentials of Modern Telecommunications Systems offers you a solution to this problem, helping you quickly coming up to speed with the latest advances in your field. By cutting out arcane mathematics and management-speak jargon, it focuses on the essentials you need for rapidly understanding and mastering the latest implementation and dev. 410 0$aArtech House telecommunications library. 606 $aTelecommunication systems 606 $aTelecommunication 608 $aElectronic books. 615 0$aTelecommunication systems. 615 0$aTelecommunication. 676 $a621.382 700 $aKularatna$b Nihal$0903313 701 $aDias$b Dileeka$0975681 801 0$bCaBNVSL 801 1$bCaBNVSL 801 2$bCaBNVSL 906 $aBOOK 912 $a9910451042703321 996 $aEssentials of Modern Telecommunications Systems$92221777 997 $aUNINA LEADER 00919oas 22003613 450 001 9910893251203321 005 20250724213019.0 011 $a2572-472X 035 $a(DE-599)ZDB2944974-1 035 $a(OCoLC)980302955 035 $a(CONSER) 2017200230 035 $a(CKB)5280000000193844 035 $a(EXLCZ)995280000000193844 100 $a20170330a20189999 uy a 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 00$aAmerican journal of sonography 210 1$aPittsford, NY :$cImaging Science Today,$d[2018-] 311 08$a2572-4711 517 1 $aAJS 531 0 $aAm. j. sonogr. 676 $a616.07543 801 0$bDLC 801 1$bDLC 801 2$bDLC 801 2$bOCLCL 906 $aJOURNAL 912 $a9910893251203321 996 $aAmerican journal of sonography$94257919 997 $aUNINA