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[null,"1.","Record Nr.",null,"UNINA9910141360003321"]
[null,null,"Autore",null,"He Jinliang"]
[null,null,"Titolo",null,"Methodology and technology for power system grounding [[electronic resource] /] / Jinliang He, Rong Zeng, Bo Zhang"]
[null,null,"Pubbl/distr/stampa",null,"Singapore, : Wiley, c2013"]
[null,null,"ISBN",null,"1-118-25500-3"]
[{"$nulls":4},"1-283-85893-2"]
[{"$nulls":4},"1-118-25501-1"]
[null,null,"Descrizione fisica",null,"1 online resource (575 p.)"]
[null,null,"Disciplina",null,"621.3"]
[{"$nulls":4},"621.3192"]
[null,null,"Soggetti",null,"Electric currents - Grounding"]
[{"$nulls":4},"Electric power systems - Protection"]
[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,"Methodology and Technology for Power System Grounding; Contents; Preface; Acknowledgements; 1 Fundamental Concepts of Grounding; 1.1 Conduction Mechanism of Soil; 1.1.1 Soil Structure; 1.1.2 Conduction Mechanism of Soil; 1.2 Functions of Grounding Devices; 1.2.1 Concept of Grounding; 1.2.2 Classification of Grounding; 1.2.3 Purpose of Grounding; 1.3 Definition and Characteristics of Grounding Resistance; 1.3.1 Definition of Grounding Resistance; 1.3.2 Relationship between Grounding Resistance and Capacitance; 1.3.3 Shielding Effect among Grounding Conductors"]
[{"$nulls":4},"1.4 Grounding Resistance of Grounding Devices1.4.1 Grounding Resistance of General Grounding Devices; 1.4.2 Grounding Resistance of Grounding Device in Non-Homogeneous Soil; 1.5 Body Safety and Permitted Potential Difference; 1.5.1 Allowable Body Current Limit; 1.5.2 Allowable Body Voltage; 1.5.3 Allowable Potential Difference; 1.5.4 Influence of Resistivity of Surface Soil Layer on Body Safety; 1.6 Standards Related to Power System Grounding; References; 2 Current Field in the Earth; 2.1 Electrical Property of Soil; 2.1.1 Soil Resistivity"]
[{"$nulls":4},"2.1.2 Influence of Different Factors on Soil Resistivity2.1.3 Permittivity of Soil; 2.1.4 Frequency Characteristics of Soil Parameters; 2.2 Basic Properties of a Constant Current Field in the Earth; 2.2.1 Current Density in the Earth; 2.2.2 Continuity of Earth Current Field; 2.2.3 Potential of Stable Current Field; 2.2.4 Current Field at the Interface of "]
[{"$nulls":4},"Layered Soil; 2.3 Current Field Created by a Point Source in Uniform Soil; 2.3.1 Laplace's Equation; 2.3.2 Current Field Created by a Point Source in Soil"]
[{"$nulls":4},"2.3.3 Earth Current Field Produced by Two Opposite Point Current Sources on the Ground Surface2.3.4 Earth Current Field in Non-Uniform Soil; 2.4 Potential Produced by a Point Source on the Ground Surface in Non-Uniform Soil; 2.4.1 Horizontally Layered Soil; 2.4.2 Horizontal Double-Layer Soil; 2.4.3 Horizontal Triple-Layer Soil; 2.4.4 Vertically Layered Soil; 2.5 Potential Produced by a Point Source in Multi-Layered Soil; 2.5.1 Analysis of Potential Produced by a Point Current Source; 2.5.2 Numerical Integral Method to Calculate Green's Function of a Point Current Source"]
[{"$nulls":4},"2.6 Computer Program Derivation Method of Green's Function2.6.1 Method of Obtaining Analytic Expression; 2.6.2 Expression of Green's Function Derived from Software Program; 2.6.3 Calculation of Current Field in Multi-Layered Soil; 2.7 Fast Calculation Method of Green's Function in Multi-Layered Soil; 2.7.1 Development of a Two-Stage Fitting Method; 2.7.2 Application of the Fast Calculation of Green's Function in Multi-Layered Soils; 2.8 Current and Potential Distributions Produced by a DC Ground Electrode; 2.8.1 Current and Potential Distributions of DC in Uniform Soil"]
[{"$nulls":4},"2.8.2 Current and Potential Distributions of DC Current in Non-Uniform Soil"]
[null,null,null,"Sommario/riassunto","Grounding is the fundamental measures to ensure the safe operation of power systems, including power apparatus and control/monitoring systems, and guarantee the personal safety. Grounding technology is an interdiscipline involving electrical engineering, high voltage technology, electric safety, electromagnetics, numerical analysis, and geological exploration  Methodology and Technology for Power System Grounding:  Covers all topics related to power system groundingPresents fundaments and theories of grounding systemsWell balances technology a"]
[null,"2.","Record Nr.",null,"UNINA9910830016403321"]
[null,null,"Autore",null,"Pankratz Alan <1944->"]
[null,null,"Titolo",null,"Forecasting with univariate Box-Jenkins models [[electronic resource] ] : concepts and cases / / Alan Pankratz"]
[null,null,"Pubbl/distr/stampa",null,"New York, : Wiley, c1983"]
[null,null,"ISBN",null,"1-282-30785-1"]
[{"$nulls":4},"9786612307850"]
[{"$nulls":4},"0-470-31656-X"]
[{"$nulls":4},"0-470-31727-2"]
[null,null,"Descrizione fisica",null,"1 online resource (587 p.)"]
[null,null,"Collana",null,"Wiley series in probability and mathematical statistics. Probability and mathematical statistics., , 0271-6356"]
[null,null,"Disciplina",null,"519.54"]
[{"$nulls":4},"519.55"]
[null,null,"Soggetti",null,"Time-series analysis"]
[{"$nulls":4},"Prediction theory"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliography and index."]
[null,null,"Nota di contenuto",null,"Forecasting With Univariate Box- Jenkins Models CONCEPTS AND CASES; CONTENTS; PART I. BASIC CONCEPTS; 1 Overview; 1.1 Planning and forecasting; 1.2 What this book is about; 1.3 Time-series data; 1.4 Single-series (univariate) analysis; 1.5 When may UBJ models be used?; 1.6 The Box-Jenkins modeling procedure; 1.7 UBJ models compared with other models; Summary; Questions and problems; 2 Introduction to Box-Jenkins analysis of a single data series; 2.1 Differencing; 2.2 Deviations from the mean"]
[{"$nulls":4},"2.3 Two analytical tools: the estimated autocorrelation function (acf) and estimated partial autocorrelation function (pacf)Summary; Questions and problems; 3 Underlying statistical principles; 3.1 Process, realization, and model; 3.2 Two common processes; 3.3 Statistical inference at the identification stage; Summary; Appendix 3 A: Expected value rules and definitions; Questions and problems; 4 An introduction to the practice of ARIMA modeling; 4.1 What is a good model?; 4.2 Two examples of UBJ-ARIMA modeling; Summary; Questions and problems; 5 Notation and the interpretation of ARIMA models"]
[{"$nulls":4},"5.1 Three processes and ARIMA (p,d,q) notation5.2 Backshift notation; 5.3 Interpreting ARIMA models I: optimal extrapolation of past values "]
[{"$nulls":4},"of a single series; 5.4 Interpreting ARIMA models II: rationalizing them from their context; 5.5 Interpreting ARIMA models III: ARIMA(O,d,q) models as exponentially weighted moving averages; Summary; Questions and problems; 6 Identification: stationary models; 6.1 Theoretical acfs and pacf's for five common processes; 6.2 Stationarity; 6.3 Invertibility; 6.4 Deriving theoretical acf's for the MA(1) process"]
[{"$nulls":4},"6.5 Deriving theoretical acf's for the AR(1) processSummary; Appendix 6A: The formal conditions for stationarity and invertibility; Appendix 6B Invertibility, uniqueness,and forecast performance; Questions and problems; 7 Identification: nonstationary models; 7.1 Nonstationary mean; 7.2 Nonstationary variance; 7.3 Differencing and deterministic trends; Summary; Appendix 7A: Integration; 8 Estimation; 8.1 Principles of estimation; 8.2 Nonlinear least-squares estimation; 8.3 Estimation-stage results: have we found a good model?; Summary; Appendix 8A: Marquardt's compromise; 8A.1 Overview"]
[{"$nulls":4},"8A.2 Application to an MA(1)Appendix 8B: Backcasting; 8B.1 Conditional least squares; 8B.2 Unconditional least squares; 9 Diagnostic checking; 9.1 Are the random shocks independent?; 9.2 Other diagnostic checks; 9.3 Reformulating a model; Summary; Questions and problems; 10 Forecasting; 10.1 The algebra of ARIMA forecasts; 10.2 The dispersion of ARIMA forecasts; 10.3 Forecasting from data in logarithmic form; 10.4 The optimality of ARIMA forecasts; Summary; Appendix 10A:The complementarity of ARIMA models and econometric models; Questions and problems; 11 Seasonal and other periodic models"]
[{"$nulls":4},"11.1 Periodic data"]
[null,null,null,"Sommario/riassunto","Explains the concepts and use of univariate Box-Jenkins/ARIMA analysis and forecasting through 15 case studies. Cases show how to build good ARIMA models in a step-by-step manner using real data. Also includes examples of model misspecification. Provides guidance to alternative models and discusses reasons for choosing one over another."]