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[null,"1.","Record Nr.",null,"UNINA9910456831103321"]
[null,null,"Autore",null,"Bismut Jean-Michel"]
[null,null,"Titolo",null,"Hypoelliptic Laplacian and orbital integrals [[electronic resource] /] / Jean-Michel Bismut"]
[null,null,"Pubbl/distr/stampa",null,"Princeton, : Princeton University Press, 2011"]
[null,null,"ISBN",null,"1-283-16387-X"]
[{"$nulls":4},"9786613163875"]
[{"$nulls":4},"1-4008-4057-0"]
[null,null,"Edizione",null,"[Course Book]"]
[null,null,"Descrizione fisica",null,"1 online resource (320 p.)"]
[null,null,"Collana",null,"Annals of mathematics studies ; ; no. 177"]
[null,null,"Disciplina",null,"515.7242"]
[null,null,"Soggetti",null,"Differential equations, Hypoelliptic"]
[{"$nulls":4},"Laplacian operator"]
[{"$nulls":4},"Definite integrals"]
[{"$nulls":4},"Orbit method"]
[{"$nulls":4},"Electronic books."]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and indexes."]
[null,null,"Nota di contenuto",null,"Frontmatter -- Contents -- Acknowledgments -- Introduction -- Chapter One. Clifford and Heisenberg algebras -- Chapter Two. The hypoelliptic Laplacian on X = G/K -- Chapter Three. The displacement function and the return map -- Chapter Four. Elliptic and hypoelliptic orbital integrals -- Chapter Five. Evaluation of supertraces for a model operator -- Chapter Six. A formula for semisimple orbital integrals -- Chapter Seven. An application to local index theory -- Chapter Eight. The case where [k (γ) ; p0] = 0 -- Chapter Nine. A proof of the main identity -- Chapter Ten. The action functional and the harmonic oscillator -- Chapter Eleven. The analysis of the hypoelliptic Laplacian -- Chapter Twelve. Rough estimates on the scalar heat kernel -- Chapter Thirteen. Refined estimates on the scalar heat kernel for bounded b -- Chapter Fourteen. The heat kernel qXb;t for bounded b -- Chapter Fifteen. The heat kernel qXb;t for b large -- Bibliography -- Subject Index -- Index of Notation"]
[null,null,null,"Sommario/riassunto","This book uses the hypoelliptic Laplacian to evaluate semisimple orbital integrals in a formalism that unifies index theory and the trace formula. The hypoelliptic Laplacian is a family of operators that is supposed to interpolate between the ordinary Laplacian and the geodesic flow. It is essentially the weighted sum of a harmonic oscillator along the fiber of "]
[{"$nulls":4},"the tangent bundle, and of the generator of the geodesic flow. In this book, semisimple orbital integrals associated with the heat kernel of the Casimir operator are shown to be invariant under a suitable hypoelliptic deformation, which is constructed using the Dirac operator of Kostant. Their explicit evaluation is obtained by localization on geodesics in the symmetric space, in a formula closely related to the Atiyah-Bott fixed point formulas. Orbital integrals associated with the wave kernel are also computed. Estimates on the hypoelliptic heat kernel play a key role in the proofs, and are obtained by combining analytic, geometric, and probabilistic techniques. Analytic techniques emphasize the wavelike aspects of the hypoelliptic heat kernel, while geometrical considerations are needed to obtain proper control of the hypoelliptic heat kernel, especially in the localization process near the geodesics. Probabilistic techniques are especially relevant, because underlying the hypoelliptic deformation is a deformation of dynamical systems on the symmetric space, which interpolates between Brownian motion and the geodesic flow. The Malliavin calculus is used at critical stages of the proof."]
[null,"2.","Record Nr.",null,"UNINA9910699550203321"]
[null,null,"Titolo",null,"Environmental testing of the NEXT PM1 ion engine [[electronic resource] /] / John S. Snyder ... [and others] ; prepared for the 43rd Joint Propulsion Conference sponsored by the American Institute of Aeronautics and Astronautics, Cincinnati, Ohio, July 8-11, 2007"]
[null,null,"Pubbl/distr/stampa",null,"Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , [2008]"]
[null,null,"Descrizione fisica",null,"1 online resource (18 pages) : illustrations"]
[null,null,"Collana",null,"NASA TM- ; ; 2008-215014"]
[null,null,"Soggetti",null,"Engine parts"]
[{"$nulls":4},"Ion engines"]
[{"$nulls":4},"Thermal cycling tests"]
[{"$nulls":4},"Systems engineering"]
[{"$nulls":4},"Performance tests"]
[{"$nulls":4},"Breadboard models"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Title from title screen (viewed on Sept. 23, 2010)."]
[{"$nulls":4},"\"January 2008.\""]
[{"$nulls":4},"\"AIAA-2007-5275.\""]
[null,null,null,"Nota di bibliografia","Includes bibliographical references (pages 17-18)."]
[null,"3.","Record Nr.",null,"UNINA9911019108803321"]
[null,null,"Titolo",null,"Reference materials for chemical analysis : certification, availability, and proper usage / / edited by Markus Stoeppler, Wayne R. Wolf, Peter J. Jenks"]
[null,null,"Pubbl/distr/stampa",null,"Weinheim ; ; New York, : Wiley-VCH, c2001"]
[null,null,"ISBN",null,"9786611764050"]
[{"$nulls":4},"9781281764058"]
[{"$nulls":4},"1281764051"]
[{"$nulls":4},"9783527613045"]
[{"$nulls":4},"3527613048"]
[{"$nulls":4},"9783527613052"]
[{"$nulls":4},"3527613056"]
[null,null,"Descrizione fisica",null,"1 online resource (325 p.)"]
[null,null,"Disciplina",null,"016.543"]
[{"$nulls":4},"543/.00218"]
[null,null,"Soggetti",null,"Analytical chemistry - Quality control"]
[{"$nulls":4},"Materials - Standards"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"Reference Materials for Chemical Analysis; Foreword; Contents; Preface; 1 Introduction; 1.1 Historical; 1.1.1 Early Developments; 1.1.2 Growth and Maturity; 1.1.3 Milestones and The Future; 1.2 The Theoretical Basis; 1.3 Technical Requirements; 1.4 References; 2 From Planning to Production; 2.1 Material Collection and Preparation; 2.1.1 Introduction; 2.1.2 General Collection and Preparation Principles; 2.1.3 Specific Examples; 2.1.4 Concluding Remarks and Recommendations; 2.2 Control of Material Properties; 2.2.1 Particle Size and Particle Size Distribution; 2.2.2 Homogeneity/Heterogeneity"]
[{"$nulls":4},"2.2.3 Humidity (Water Content)2.2.4 Degradation Studies/Shelf Life; 2.3 References; 3 Certification; 3.1 Certification Philosophy of RM Producers; 3.1.1 Introduction; 3.1.2 Approaches to the Characterization/Certification of Reference Materials; 3.1.2.1 General Principles of Certification; 3.1.2.2 Classification of Characterization/Certification Schemes; 3.1.2.3 Specific Examples; 3.1.3 Conclusions; 3.2 Certification of Elements; 3.2.1 Methods Used "]
[{"$nulls":4},"for the Certification of RMs for Elements; 3.2.2 Multi-Method Elemental RM Certification; 3.2.2.1 River Sediment; 3.2.2.2 Lichen"]
[{"$nulls":4},"3.2.2.3 Examples of Selected RMs Certified for Elements3.2.3 Certification of Element Contents by Neutron Activation Analysis; 3.2.3.1 General Features; 3.2.3.2 Internal Cross-Checking (Self-Verification) in NAA; 3.2.3.3 Applications in Certification and Analysis; 3.2.3.4 NAA for the Detection of Errors; 3.2.3.5 Summary; 3.3 Certification of Organometallic and Other Species; 3.3.1 Introduction; 3.3.2 Potential Sources of Error in Speciation Analysis; 3.3.3 Restricted List of Chemical Species for Trace Elements and Their Compounds; 3.3.3.1 Aluminum; 3.3.3.2 Antimony; 3.3.3.3 Arsenic"]
[{"$nulls":4},"3.3.3.4 Bromine3.3.3.5 Chromium; 3.3.3.6 Mercury; 3.3.3.7 Lead; 3.3.3.8 Selenium; 3.3.3.9 Tin; 3.3.3.10 Metallothionein; 3.3.4 Fractionation; 3.3.5 Conclusions; 3.4 Certification of Organic Substances; 3.4.1 Introduction; 3.4.2 CRMs Available for Organic Constituents; 3.4.2.1 Pure Substances; 3.4.2.2 Calibration Solution CRMs; 3.4.2.3 Natural Matrix SRMs; 3.4.3 Certification Approach for Organic Constituents; 3.4.3.1 NISTApproach for Certification; 3.4.3.2 NIST Analytical Approach for the Certification of Organic Constituents in Natural Matrix SRMs; 3.4.3.3 BCR Approach to Certification"]
[{"$nulls":4},"3.5 References4 Particular Developments; 4.1 RMs in Quality Control and Quality Assessment; 4.1.1 Introduction; 4.1.2 Proper Usage; 4.1.3 Characterization of Methods; 4.1.4 Internal Quality Control; 4.1.5 External Quality Assurance; 4.1.5.1 State of the Art; 4.1.5.2 Performance of Individual Laboratories; 4.1.5.3 Supplement Internal Quality Control; 4.1.5.4 To Obtain Consensus Values; 4.1.5.5 Investigate Factors Contributing to Performance; 4.1.5.6 To Act as an Educational Stimulus - To License Laboratories?; 4.1.6 Conclusions; 4.2 Fresh Materials; 4.2.1 Introduction; 4.2.2 Packing Materials"]
[{"$nulls":4},"4.2.3 Preparation"]
[null,null,null,"Sommario/riassunto","There are many academic references describing how RMs are made, but few that explain why they are used, how they should be used and what happens when they are not properly used.In order to fill this gap, the editors have taken the contributions of more than thirty RM practitioners to produce a highly readable text organized in nine chapters. Starting with an introduction to historical, theoretical and technical requirements, the book goes on to examine all aspects of RM production from planning, preparation through analysis to certification, reviews recent development areas, RMs for li"]