04733nam 22006495 450 991025333360332120240923160243.09781137316233113731623310.1057/978-1-137-31623-3(CKB)3710000000653226(DE-He213)978-1-137-31623-3(MiAaPQ)EBC4720011(Perlego)3483077(EXLCZ)99371000000065322620160423d2016 u| 0engurnn|008mamaatxtrdacontentcrdamediacrrdacarrierLanguage Policy and Economics: The Language Question in Africa /by Nkonko M. Kamwangamalu1st ed. 2016.London :Palgrave Macmillan UK :Imprint: Palgrave Macmillan,2016.1 online resource (XXV, 232 p.) Palgrave Studies in Minority Languages and Communities,2947-58999780230251724 0230251722 Includes bibliographical references at the end of each chapters and index. 'This volume is an ambitious undertaking, fruit of meticulous research and deep reflection. Professor Kamwangamalu's panoramic assessment of language planning, economics and game theory in colonial, post-colonial and globalised sub-Saharan African settings brilliantly deploys notions of 'prestige planning' to recurring dilemmas about the choices of medium of instruction in schooling and language choices in public and private institutions. This volume is groundbreaking theoretically and methodologically, but remains grounded in the real world needs of diverse African communities in their unique historical experiences of colonialism and their modern trajectories in an increasingly interlinked world. Professor Kamwangamalu's reinvigoration of the framework of 'prestige' in language and how it can be activated adds great practical value to his impressive scholarly achievement.' -Joseph Lo Bianco, Professor, The University of Melbourne, Australia This book addresses the perennial question of how to promote Africa's indigenous languages as medium of instruction in educational systems. Breaking with the traditional approach to the continent's language question by focusing on the often overlooked issue of the link between African languages and economic development, Language Policy and Economics considers African languages an integral part of a nation's socio-political and economic development. Therefore, the book argues that any language policy designed to promote these languages in such higher domains as the educational system in particular must have economic advantages if the intent is to succeed, and proposes Prestige Planning as the way to address this issue. The proposition is a welcome break away from language policies which pay lip-service to the empowerment of African languages while, by default, strengthening the stranglehold of imported European languages. Nkonko M. Kamwangamalu is Professor of Linguistics at Howard University, Washington, DC. He is co-Editor of Current Issues in Language Planning, author of The Language Situation in South Africa (2004), of articles in Chicago Linguistic Society, Georgetown Round Table on Languages and Linguistics, Multilingua, Applied Linguistics, Journal of Asian Pacific Communication, World Englishes, Language Problems and Language Planning, Journal of Multilingual and Multicultural Development, Journal of Creative Communications, Studies in the Linguistic Sciences, TESOL Quarterly, Annual Review of Applied Linguistics, International Journal of the Sociology of Language, to name a few, and of chapters in edited collections.Palgrave Studies in Minority Languages and Communities,2947-5899Language policyAfrican languagesMultilingualismEconomic policyGame theoryLanguage Policy and PlanningAfrican LanguagesMultilingualismEconomic PolicyGame TheoryLanguage policy.African languages.Multilingualism.Economic policy.Game theory.Language Policy and Planning.African Languages.Multilingualism.Economic Policy.Game Theory.306.449Kamwangamalu Nkonko Mauthttp://id.loc.gov/vocabulary/relators/aut1063274BOOK9910253333603321Language Policy and Economics: The Language Question in Africa2531367UNINA07386nam 2200793Ia 450 991101949680332120200520144314.097866107223349781280722332128072233997804719313170471931314978160119520316011952069780471931300047193130610.1002/0471931314(CKB)1000000000355101(EBL)281902(SSID)ssj0000072968(PQKBManifestationID)11118629(PQKBTitleCode)TC0000072968(PQKBWorkID)10103263(PQKB)10606659(MiAaPQ)EBC281902(CaBNVSL)mat05224658(IDAMS)0b0000648107137b(IEEE)5224658(OCoLC)163577386(PPN)257747540(Perlego)2775015(EXLCZ)99100000000035510120060821d2006 uy 0engur|n|---|||||txtccrSignal processing of power quality disturbances /Math H.J. Bollen, Irene Yu-Hua GuPiscataway, NJ IEEE Press ;Hoboken, NJ Wileyc20061 online resource (883 p.)IEEE Press series on power engineeringDescription based upon print version of record.9780470932254 0470932252 9780471731689 0471731684 Includes bibliographical references (p. 829-847) and index.PREFACE -- ACKNOWLEDGMENTS -- 1 INTRODUCTION -- 1.1 Modern View of Power Systems -- 1.2 Power Quality -- 1.3 Signal Processing and Power Quality -- 1.4 Electromagnetic Compatibility Standards -- 1.5 Overview of Power Quality Standards -- 1.6 Compatibility Between Equipment and Supply -- 1.7 Distributed Generation -- 1.8 Conclusions -- 1.9 About This Book -- 2 ORIGIN OF POWER QUALITY VARIATIONS -- 2.1 Voltage Frequency Variations -- 2.2 Voltage Magnitude Variations -- 2.3 Voltage Unbalance -- 2.4 Voltage Fluctuations and Light Flicker -- 2.5 Waveform Distortion -- 2.6 Summary and Conclusions -- 3 PROCESSING OF STATIONARY SIGNALS -- 3.1 Overview of Methods -- 3.2 Parameters That Characterize Variations -- 3.3 Power Quality Indices -- 3.4 Frequency-Domain Analysis and Signal Transformation -- 3.5 Estimation of Harmonics and Interharmonics -- 3.6 Estimation of Broadband Spectrum -- 3.7 Summary and Conclusions -- 3.8 Further Reading -- 4 PROCESSING OF NONSTATIONARY SIGNALS -- 4.1 Overview of Some Nonstationary Power Quality Data Analysis<U+0083> Methods -- 4.2 Discrete STFT for Analyzing Time-Evolving Signal Components -- 4.3 Discrete Wavelet Transforms for Time-Scale Analysis of Disturbances -- 4.4 Block-Based Modeling -- 4.5 Models Directly Applicable to Nonstationary Data -- 4.6 Summary and Conclusion -- 4.7 Further Reading -- 5 STATISTICS OF VARIATIONS -- 5.1 From Features to System Indices -- 5.2 Time Aggregation -- 5.3 Characteristics Versus Time -- 5.4 Site Indices -- 5.5 System Indices -- 5.6 Power Quality Objectives -- -- 5.7 Summary and Conclusions -- 6 ORIGIN OF POWER QUALITY EVENTS -- 6.1 Interruptions -- 6.2 Voltage Dips -- 6.3 Transients -- 6.4 Summary and Conclusions -- 7 TRIGGERING AND SEGMENTATION -- 7.1 Overview of Existing Methods -- 7.2 Basic Concepts of Triggering and Segmentation -- 7.3 Triggering Methods -- 7.4 Segmentation -- 7.5 Summary and Conclusions -- 8 CHARACTERIZATION OF POWER QUALITY EVENTS -- 8.1 Voltage Magnitude Versus Time -- 8.2 Phase Angle Versus Time.8.3 Three-Phase Characteristics Versus Time -- 8.4 Distortion During Event -- 8.5 Single-Event Indices: Interruptions -- 8.6 Single-Event Indices: Voltage Dips -- 8.7 Single-Event Indices: Voltage Swells -- 8.8 Single-Event Indices Based on Three-Phase Characteristics -- 8.9 Additional Information from Dips and Interruptions -- 8.10 Transients -- 8.11 Summary and Conclusions -- 9 EVENT CLASSIFICATION -- 9.1 Overview of Machine Data Learning Methods for Event Classification -- 9.2 Typical Steps Used in Classification System -- 9.3 Learning Machines Using Linear Discriminants -- 9.4 Learning and Classification Using Probability Distributions -- 9.5 Learning and Classification Using Artificial Neural Networks -- 9.6 Learning and Classification Using Support Vector Machines -- 9.7 Rule-Based Expert Systems for Classification of Power System Events -- 9.8 Summary and Conclusions -- 10 EVENT STATISTICS -- 10.1 Interruptions -- 10.2 Voltage Dips: Site Indices -- 10.3 Voltage Dips: Time Aggregation -- 10.4 Voltage Dips: System Indices -- 10.5 Summary and Conclusions -- 11 CONCLUSIONS -- 11.1 Events and Variations -- 11.2 Power Quality Variations -- 11.3 Power Quality Events -- 11.4 Itemization of Power Quality -- 11.5 Signal-Processing Needs -- APPENDIX A IEC STANDARDS ON POWER QUALITY -- APPENDIX B IEEE STANDARDS ON POWER QUALITY -- BIBLIOGRAPHY -- INDEX.Bridging the gap between power quality and signal processing This innovative new text brings together two leading experts, one from signal processing and the other from power quality. Combining their fields of expertise, they set forth and investigate various types of power quality disturbances, how measurements of these disturbances are processed and interpreted, and, finally, the use and interpretation of power quality standards documents. As a practical aid to readers, the authors make a clear distinction between two types of power quality disturbances: * Variations: disturbances that are continuously present * Events: disturbances that occur occasionally A complete analysis and full set of tools are provided for each type of disturbance: * Detailed examination of the origin of the disturbance * Signal processing measurement techniques, including advanced techniques and those techniques set forth in standards documents * Interpretation and analysis of measurement data * Methods for further processing the features extracted from the signal processing into site and system indices The depth of coverage is outstanding: the authors present and analyze material that is not covered in the standards nor found in the scientific literature. This text is intended for two groups of readers: students and researchers in power engineering who need to use signal processing techniques for power system applications, and students and researchers in signal processing who need to perform power system disturbance analyses and diagnostics. It is also highly recommended for any engineer or utility professional involved in power quality monitoring.IEEE Press series on power engineering.Electric power system stabilityElectric power systemsQuality controlSignal processingElectric power system stability.Electric power systemsQuality control.Signal processing.621.310285621.319Bollen Math H. J555027Gu Irene Yu-Hua721576MiAaPQMiAaPQMiAaPQBOOK9911019496803321Signal processing of power quality disturbances1411015UNINA