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[null,"1.","Record Nr.",null,"UNINA9910427682003321"]
[null,null,"Titolo",null,"Modern developments in vacuum electron sources / / Georg Gaertner, Wolfram Knapp, Richard G. Forbes, editors"]
[null,null,"Pubbl/distr/stampa",null,"Cham, Switzerland : , : Springer, , [2020]"]
[{"$nulls":4},"©2020"]
[null,null,"ISBN",null,"3-030-47291-4"]
[null,null,"Edizione",null,"[1st ed. 2020.]"]
[null,null,"Descrizione fisica",null,"1 online resource (XVIII, 597 p. 300 illus., 183 illus. in color.)"]
[null,null,"Collana",null,"Topics in applied physics ; ; Volume 135"]
[null,null,"Disciplina",null,"621.381"]
[null,null,"Soggetti",null,"Vacuum microelectronics"]
[{"$nulls":4},"Field emission"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"Historical development and advanced new applications of vacuum electron sources  -- State of the art and future perspectives of Scandate cathodes -- Review of impregnated and reservoir Ba dispenser cathodes -- New developments in Ba oxide cathodes -- Electron sources for medical X-ray tubes -- High brightness cathodes for high resolution electron beam applications -- Progress in field electron emission science -- Carbon-based field emitters, properties and applications -- Explosive electron emission of carbon based cathodes and applications -- Photocathodes."]
[null,null,null,"Sommario/riassunto","This book gives an overview of modern cathodes and electron emitters for vacuum tubes and vacuum electron devices in general. It covers the latest developments in field emission theory as well as new methods towards improving thermionic and cold cathodes. It addresses thermionic cathodes, such as oxide cathodes, impregnated and scandate cathodes, as well as photocathodes and field emitters – the latter comprising carbon nanotubes, graphene and Spindt-type emitter arrays. Despite the rise and fall of the once dominant types of vacuum tubes, such as radio valves and cathode ray tubes, cathodes are continually being improved upon as new applications with increased demands arise, for example in electron beam lithography, high-power and high-frequency microwave tubes, terahertz imaging and electron sources for accelerators. Written by 17 experts in the field, the book presents the latest developments in cathodes needed for these applications, discussing the state of the art and addressing future "]
[{"$nulls":4},"trends."]
[null,"2.","Record Nr.",null,"UNINA9910523805603321"]
[null,null,"Titolo",null,"Advances in the Anthropological Theory of the Didactic / / edited by Yves Chevallard, Berta Barquero, Marianna Bosch, Ignasi Florensa, Josep Gascón, Pedro Nicolás, Noemí Ruiz-Munzón"]
[null,null,"Pubbl/distr/stampa",null,"Cham : , : Springer International Publishing : , : Imprint : Birkhäuser, , 2022"]
[null,null,"ISBN",null,"9783030767914"]
[{"$nulls":4},"3030767914"]
[null,null,"Edizione",null,"[1st ed. 2022.]"]
[null,null,"Descrizione fisica",null,"1 online resource (348 pages)"]
[null,null,"Disciplina",null,"510"]
[null,null,"Soggetti",null,"Mathematics - Study and teaching"]
[{"$nulls":4},"Mathematics Education"]
[{"$nulls":4},"Ensenyament de la matemàtica"]
[{"$nulls":4},"Llibres electrònics"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Nota di bibliografia","Includes bibliographical references."]
[null,null,"Nota di contenuto",null,"Part 1. Dialogue between theories in mathematics education -- Introduction -- On the genesis and progress of the ATD -- ATD on relationships between research and teaching. The case of a didactic problem concerning real numbers -- From the networking of theories to the discussion of the educational implications of research -- Theory of didactical situations in mathematics: an epistemological revolution -- The Onto-semiotic Approach in Mathematics Education. Analysing objects and meanings in mathematical practice -- APOS theory and the role of genetic decomposition -- Part 2. Mathematics teacher education and the professionalisation of teaching -- Introduction -- Challenges and advances in teacher education within the ATD -- Paradidactic infrastructure for mathematics teachers’ collective work -- On the problem between devices and infrastructures in teacher education within the paradigm of questioning the world -- Introduction of ordinal number at the beginning of the French curriculum: a study of professional teaching problem -- Study and research for teacher education: some advances on teacher education in the paradigm of questioning the world -- Transpositive phenomena of didactics in teacher training -- Prospective teachers’ narrative analysis using the didactic-mathematical knowledge and competences model (DMKC) -- "]
[{"$nulls":4},"Exploring the Paradidactic Ecosystem: Conditions and Constraints on the Teaching Profession -- Teacher learning in collaborative settings: analysis of an open lesson -- Part 3. The curriculum problem and the paradigm of questioning the world -- Introduction -- Toward a scientific understanding of a possibly upcoming civilisational revolution -- Methodological proposal about the analysis of dominant praxeological models with its confrontations with a reference praxeological model: a case study of quadratic equation -- Study and research Paths, ecology and in-service teachers -- Analysing the Dialectic of Questions and Answers in Study and Research Paths -- Experimentation of an SRP: didactic-mathematical indicators of dialectics -- Part 4. Research in didactics at university level -- Introduction -- Institutional transitions in university mathematics education -- Examining Individual and Collective Level Mathematical Progress -- Mathematical analysis at university -- Using tools from ATD to analyse the use of mathematics in engineering tasks. Some cases involving integrals -- A workshop on the epistemology and didactics of mathematical structuralism -- About two epistemology related aspects in mathematical practices of empirical sciences -- Describing the mathematical activity: dynamic and static aspects."]
[null,null,null,"Sommario/riassunto","The book focuses on the latest developments of the Anthropological Theory of the Didactic (ATD) and its links with other approaches in mathematics education. Leading researchers in the ATD and especially its creator, Yves Chevallard, present recent research results, theoretical advances and new methodologies in this approach, concerning critical educational problems at all levels. The book is addressed to researchers in mathematics education and all related fields, to teacher educators and teachers in primary, secondary and tertiary education interested in curriculum issues and research in didactics. The book includes four sections that correspond to four axes of current research in the framework of the ATD. The first one studies the relations between the ATD and other research frameworks. The second section focuses on the crucial role of didactics in teacher education, and the experiences carried out at different instructional levels. The third section addresses the curriculum problem in the historical transition from the classical paradigm of visiting works to the emerging didactic paradigm of questioning the world. The last section is about research in didactics at the university level, with investigations about the analysis of didactic transposition processes and the design and implementation of various instructional formats."]