01158cam0-2200301---450 99000499795040332120240214104013.0000499795FED01000499795(Aleph)000499795FED0119990604d1964----km-y0itay50------baengCHy-------001yyStudies in the psychology of second language learning= Studi su la psicologia dell'apprendimento delle lingue estere= Etudes psychologiques sur l'apprentissage d'une langue étrangère= Studien über die Psychologir des Erlernens einer Fremddsprache= Estudios sobre la psicologia del aprendizaje de los idiomas extranjerosRenzo TitoneZürichPas1964181 p.25 cmQuaderni di orientamenti pedagogici8LingueApprendimento407Titone,Renzo<1925- >382317ITUNINARICAUNIMARCBK990004997950403321418 TITO 06Ist.f.m.10752FLFBCFLFBCStudies in the psychology of second language learning530556UNINA05943nam 22007452 450 991082917870332120160113114114.01-107-23710-61-139-85427-51-139-84283-81-139-84519-51-139-84045-21-139-23685-71-139-84605-11-283-74667-01-139-84164-5(CKB)2550000000708517(EBL)1057538(OCoLC)817224515(SSID)ssj0000756654(PQKBManifestationID)11440229(PQKBTitleCode)TC0000756654(PQKBWorkID)10750861(PQKB)11369228(UkCbUP)CR9781139236850(MiAaPQ)EBC1057538(Au-PeEL)EBL1057538(CaPaEBR)ebr10621713(CaONFJC)MIL405917(PPN)261297023(EXLCZ)99255000000070851720120206d2013|||| uy| 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierPrinciples of cognitive radio /Ezio Biglieri [and four others][electronic resource]Cambridge :Cambridge University Press,2013.1 online resource (xxv, 299 pages) digital, PDF file(s)Title from publisher's bibliographic system (viewed on 05 Oct 2015).1-107-02875-2 Includes bibliographical references and index.Cover; Contents; Contributors; Preface; Acknowledgments; Notation; 1 The concept of cognitive radio; 1.1 Motivation for cognitive radios: spectrum is underutilized; 1.2 What is cognitive radio?; 1.2.1 Agile radios and dynamic spectrum access; 1.2.2 User hierarchy in cognitive radio networks; 1.2.3 Usage scenarios for cognitive radio; 1.2.4 Cognitive radio bands; 1.3 Spectrum policy: present and future; 1.3.1 Role of spectrum policy; 1.4 Data explosion: future spectrum implications; 1.5 Applications of cognitive radio; 1.5.1 Dynamic spectrum access in cellular systems1.5.2 Cellular data boost1.5.3 Machine-to-machine communications; 1.5.4 Distribution and backhaul; 1.5.5 Cognitive digital home; 1.5.6 Long range vehicle-to-vehicle network; 1.6 Cognitive radio network design; 1.6.1 Global control plane; 1.6.2 Spectrum servers, spectrum brokers, and network information servers; 1.6.3 Security aspects of cognitive radio; 1.7 Hardware and system design considerations; 1.7.1 Design tradeoffs in usage scenarios; 1.7.2 Antenna design in cognitive radio systems; 1.7.3 Analog-to-digital converters; 1.7.4 Wideband channels and noncontiguous transmission1.8 Spectrum coexistence in cognitive radio networks1.8.1 Spectrum pooling and bandwidth exchange; 1.8.2 Cross-layer scheduling in cognitive radio networks; 1.9 Prototyping; 1.10 Standardization activity in cognitive radio; 1.11 Organization of this book; References; References; 2 Capacity of cognitive radio networks; 2.1 Introduction; 2.2 Cognitive radio network paradigms; 2.2.1 Underlay paradigm; 2.2.2 Overlay paradigm; 2.2.3 Interweave paradigm; 2.2.4 Comparison of cognitive radio paradigms; 2.3 Fundamental performance limits of wireless networks; 2.3.1 Performance metrics2.3.2 Mathematical definition of capacity2.3.3 Capacity region of wireless networks; 2.4 Interference channels without cognition; 2.4.1 K-user interference channels; 2.4.2 Two-user interference channel capacity; 2.4.3 Interference channel techniques for cognitive radios; 2.5 Underlay cognitive radio networks; 2.5.1 Underlay capacity region; 2.5.2 Capacity results for specific scenarios; 2.6 Interweave cognitive radio networks; 2.6.1 Shannon capacity; 2.6.2 Random switch model for secondary channels; 2.6.3 Scaling laws for interweave networks; 2.7 Overlay cognitive radio networks2.7.1 Cognitive encoder for the two-user overlay channel2.7.2 Capacity results; 2.7.3 K-user overlay networks; 2.8 Summary; 2.9 Further reading; References; 3 Propagation issues for cognitive radio; 3.1 Introduction; 3.1.1 Propagation in the cognitive radio bands; 3.1.2 Impact of propagation on sensing; 3.1.3 Impact of propagation on transmission; 3.1.4 Outline of the chapter; 3.2 Generic channel response; 3.3 Introduction to path loss; 3.3.1 Free-space path loss; 3.3.2 Path loss in CR scenarios; 3.4 Path loss models for wireless channels; 3.4.1 General formulation; 3.4.2 Shadow fading, S3.4.3 Median path loss, PLmedWidely regarded as one of the most promising emerging technologies for driving the future development of wireless communications, cognitive radio has the potential to mitigate the problem of increasing radio spectrum scarcity through dynamic spectrum allocation. Drawing on fundamental elements of information theory, network theory, propagation, optimisation and signal processing, a team of leading experts present a systematic treatment of the core physical and networking principles of cognitive radio and explore key design considerations for the development of new cognitive radio systems. Containing all the underlying principles you need to develop practical applications in cognitive radio, this book is an essential reference for students, researchers and practitioners alike in the field of wireless communications and signal processing.Cognitive radio networksRadio frequency allocationSoftware radioCognitive radio networks.Radio frequency allocation.Software radio.621.384Biglieri Ezio223Biglieri Ezio223UkCbUPUkCbUPBOOK9910829178703321Principles of cognitive radio4000418UNINA05207nam 22007455 450 991029830040332120200704232915.03-642-54010-410.1007/978-3-642-54010-3(CKB)3710000000092680(EBL)1731636(OCoLC)884584740(SSID)ssj0001185914(PQKBManifestationID)11629446(PQKBTitleCode)TC0001185914(PQKBWorkID)11212527(PQKB)10900754(MiAaPQ)EBC1731636(DE-He213)978-3-642-54010-3(PPN)177822007(EXLCZ)99371000000009268020140307d2014 u| 0engur|n|---|||||txtccrThe Gentianaceae - Volume 1: Characterization and Ecology /edited by Jan J. Rybczyński, Michael R. Davey, Anna Mikuła1st ed. 2014.Berlin, Heidelberg :Springer Berlin Heidelberg :Imprint: Springer,2014.1 online resource (345 p.)Description based upon print version of record.3-642-54009-0 Includes bibliographical references and indexes.Morphological Characteristics of the Family Gentianaceae -- Classification and Evolution of the Family Gentianaceae -- A Monographic Revision of the Neotropical Genus Macrocarpaea (Gentianaceae) in Ecuador -- A Review of Taxonomy and Distribution of the Gentianaceae in the Ukraine -- Distribution, Ecology and Some Taxonomical Notes of Genera Gentiana L. and Gentianella Moech (Gentianaceae) in the Balkans -- Biochemical and Morphological Determination of Flower Color in Gentianaceae -- Karyology of European Species of Genus Gentiana L -- 21st Century Centauries – An Updated Review on Centaurium Hill and Allies (Gentianaceae) -- Genes Expressed in the Overwinter Buds of Gentian (Gentiana spp.): Application to Taxonomic, Phylogenetic and Phylogeographical Analyses -- Exacum bicolor Roxb. an Exquisite, Under Exploited Wild Ornamental -- Indian Swertia from Eastern Himalaya: Strategies of Conservation and Biotechnological Improvements -- The Role of Arbuscular Mycorrhiza in the Growth and Development of Plants in the Family Gentianaceae.This is the first of two volumes on Gentianaceae. Comprising twelve chapters, it centres upon the characterization and ecology of Gentianaceae worldwide, with emphasis on the application of molecular and cytological approaches in relation to taxonomy. The first three chapters consider the classification of the family and review the advances in research since the earlier revision published in 2002, which resulted in the reclassification of some plants and the naming of new genera. The next chapter provides the most comprehensive report to date of the systematics of South American Neotropical woody Gentians. Other reviews include details of the Gentianaceae in Eastern Europe. The key biochemical steps that result in the diversity of Gentian flower colors, the cytology of European species and an historical account of the importance of Gentians in herbal medicines are also covered. Furthermore, an analysis of gene expression in overwintering buds is presented, discussing several aspects of plant taxonomy, phenotypic characteristics, phylogeography and pedigree. Two contributions highlight the importance of Gentians in India, and the last chapter presents evidence for the importance of Glomeromycota in developing arbuscular mycorrhizal associations with the roots of Gentians. This volume provides the basis for the biotechnological approaches that are considered in the companion book The Gentianaceae – Volume 2: Biotechnology and Applications.PlantsClassificationPlantsClassificationPlant ecologyEvolution (Biology)Plant physiologyPlant Systematics/Taxonomy/Biogeographyhttps://scigraph.springernature.com/ontologies/product-market-codes/L24051Plant Ecologyhttps://scigraph.springernature.com/ontologies/product-market-codes/L19112Evolutionary Biologyhttps://scigraph.springernature.com/ontologies/product-market-codes/L21001Plant Physiologyhttps://scigraph.springernature.com/ontologies/product-market-codes/L33020PlantsPlantsPlant ecology.Evolution (Biology)Plant physiology.Plant Systematics/Taxonomy/Biogeography.Plant Ecology.Evolutionary Biology.Plant Physiology.570571.2578.012578.09Rybczyński Jan Jedthttp://id.loc.gov/vocabulary/relators/edtDavey Michael Redthttp://id.loc.gov/vocabulary/relators/edtMikuła Annaedthttp://id.loc.gov/vocabulary/relators/edtBOOK9910298300403321The Gentianaceae - Volume 1: Characterization and Ecology2508871UNINA