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[null,"1.","Record Nr.",null,"UNINA990006862810403321"]
[null,null,"Autore",null,"Rescigno, Giuseppe"]
[null,null,"Titolo",null,"La famiglia meridionale trasmissione parentale, società, lavoro nell'età moderna : il quartiere Mercato dello \"stato\" di San Severino nel Seicento / Giuseppe Rescigno"]
[null,null,"Pubbl/distr/stampa",null,"Lancusi : Gutenberg, 1996"]
[null,null,"Descrizione fisica",null,"XVI, 400 p. ; 22 cm"]
[null,null,"Disciplina",null,"306.3"]
[null,null,"Locazione",null,"FSPBC"]
[null,null,"Collocazione",null,"XI A 2501"]
[null,null,"Lingua di pubblicazione",null,"Italiano"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,"2.","Record Nr.",null,"UNINA9910743341603321"]
[null,null,"Autore",null,"Ke Xizheng"]
[null,null,"Titolo",null,"Adaptive optics theory and its application in optical wireless communication / / Xizheng Ke and Pengfei Wu"]
[null,null,"Pubbl/distr/stampa",null,"Beijing ; ; Singapore : , : Science Press : , : Springer, , [2022]"]
[{"$nulls":4},"©2022"]
[null,null,"ISBN",null,"981-16-7901-0"]
[{"$nulls":4},"981-16-7900-2"]
[null,null,"Descrizione fisica",null,"1 online resource (387 pages)"]
[null,null,"Collana",null,"Optical wireless communication theory and technology"]
[null,null,"Disciplina",null,"621.3827"]
[null,null,"Soggetti",null,"Optical communications"]
[{"$nulls":4},"Optics, Adaptive"]
[{"$nulls":4},"Wireless communication systems"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,"Nota di contenuto",null,"Intro -- Preface -- Introduction -- Contents -- 1 Introduction -- 1.1 Wireless Optical Coherent Communication Research Status -- 1.1.1 Research Status in the United States -- 1.1.2 Research Status in Europe -- 1.1.3 Research Status of Japan -- 1.1.4 Research Status of China -- 1.2 Adaptive Optics -- 1.2.1 International Research Progress in Adaptive Optics -- 1.2.2 Chinese Research Progress in Adaptive Optics -- 1.2.3 Adaptive Optics Development Trends -- References -- 2 Coherent Optical Communication -- 2.1 Basic Principles of Coherent Optical Communication -- 2.1.1 Fundamentals -- 2.1.2 Homodyne Detection -- 2.1.3 Heterodyne Detection -- 2.1.4 Detection of an Amplitude Modulated Signal -- 2.1.5 Dual-Channel Balanced Detection -- 2.2 Coherent Modulation and Demodulation -- 2.2.1 Optical Modulation -- 2.2.2 Coherent Demodulation -- 2.2.3 System Performance -- 2.3 Factors Affecting Detection Sensitivity -- 2.3.1 Phase Noise -- 2.3.2 Intensity Noise -- 2.3.3 Polarization Noise -- 2.3.4 Key Technologies of Coherent Optical Communication Systems -- 2.4 Spatial Phase Conditions for Optical Heterodyne Detection -- 2.4.1 Spatial Phase Difference Conditions -- 2.4.2 Frequency Conditions -- 2.4.3 Polarization Conditions -- 2.5 Summary and Outlook -- References -- 3 Adaptive Control of Wavefront Distortion -- 3.1 The Basic Principle of Coherent Optical Communication -- 3.2 Adaptive Optics Technology -- 3.2.1 Basic Principles -- 3.2.2 Wavefront Sensor "]
[{"$nulls":4},"-- 3.2.3 Wavefront Corrector -- 3.2.4 Wavefront Distortion Correction Principle -- 3.2.5 Beam Quality Evaluation Index -- 3.3 Wavefront Correction Algorithm of a Double Deformable Mirror -- 3.3.1 Wavefront Distortion Caused by Atmospheric Turbulence -- 3.3.2 Numerical Analysis of Wavefront Distortion -- 3.3.3 Experiment on Adaptive Control of Wavefront Distortion of Pendulum Mirror and Deformable Mirror."]
[{"$nulls":4},"3.4 Wavefront Distortion Predictive Control -- 3.4.1 Adaptive Optics Model -- 3.4.2 Subspace System Identification -- 3.4.3 Predictive Control Experiment of Wavefront Distortion -- 3.5 System Error Analysis and Suppression -- 3.5.1 Error Analysis of Adaptive Optics System -- 3.5.2 Method of Restraining System Error -- 3.5.3 Comparison of Error Suppression Methods -- 3.6 Adaptive Control of Wavefront Distortion -- 3.6.1 PI Control Algorithm -- 3.6.2 Closed-Loop Control Parameter Adjustment -- 3.7 System Calibration -- 3.7.1 System Composition -- 3.7.2 Push-Pull Calibration -- 3.7.3 Hadamard Matrix Calibration -- 3.8 Closed-Loop -- 3.8.1 Closed-Loop Algorithm -- 3.8.2 Closed-Loop Bandwidth -- References -- 4 Adaptive Optics Calibration Methods -- 4.1 Proportional Integral Algorithm -- 4.1.1 System Response Matrix Calibration -- 4.1.2 Control Principles of PI Algorithm based on Direct Slope Method -- 4.1.3 Control Principles of Iterative Algorithm -- 4.2 Influence of Parameters on PI and Iterative Algorithms -- 4.2.1 PI Control Algorithm Parameters -- 4.2.2 G-S Algorithm Parameters -- 4.2.3 ILC Algorithm Parameters -- 4.2.4 Comparing the PI and Iterative Algorithms -- 4.2.5 Algorithm Operation Volume Analysis -- 4.3 Coherent Optical Communication Wave Front Correction Experiment -- 4.3.1 Analysis of the Closed-Loop Control Effect of the Wave Front Controller -- 4.3.2 Influence of AO Closed Loop Correction on Wave Front PV and Wave Front Root Mean Square -- 4.3.3 Influence of AO Closed-Loop Correction on Coupling Effect and Intermediate Frequency Signal -- References -- 5 Dual Fuzzy Adaptive Proportional Integral Derivative (PID) Control -- 5.1 Dual Fuzzy Adaptive PID Control Principle Based on the Direct Slope Method -- 5.2 Influence of the Input and Output Domains on the Fuzzy Adaptive PID Algorithm -- 5.2.1 Control Voltage."]
[{"$nulls":4},"5.2.2 First Derivative of the Control Voltage -- 5.2.3 Output Domain -- 5.3 Fuzzy Control Experiment -- 5.3.1 Experimental Setup of the AO System -- 5.3.2 Iterative Control Algorithm Calibration Experiment -- 5.3.3 PID Control Algorithm Calibration Experiment -- References -- 6 Wave Front Correction Using the Stochastic Parallel Gradient Descent (SPGD) Algorithm -- 6.1 Wave Front Correction of Distorted Gaussian Beams Using the SPGD Algorithm -- 6.1.1 SPGD Algorithm -- 6.1.2 Optical Transmission Equation and Multiphase Screen Method -- 6.1.3 Simulation of Gaussian Beam Propagation in Atmospheric Turbulence -- 6.1.4 Wave Front Correction under Different Turbulence Intensities -- 6.1.5 Performance Improvement of Coherent Optical Communication System Using AO -- 6.2 Wave Front Distortion Correction Experiment Using the SPGD Algorithm -- 6.2.1 Correction of Static Wave Front Distortion -- 6.2.2 Wave Front Correction of a Heterodyne Detection Coherent Optical Communication System Using the SPGD Algorithm -- References -- 7 Wave Front Distortion Correction Using Deformable Mirror Eigenmode Method -- 7.1 Deformable Mirror Method -- 7.1.1 System Functions -- 7.1.2 Correction Factor -- 7.1.3 Deformable Mirror Intrinsic Mode -- 7.2 Simulating Wave Front Correction Using the Eigenmode Method -- 7.2.1 Calibration Process and Method -- 7.2.2 Deformable Mirror Modeling and Its Eigenmode -- 7.3 Wave Front Correction Simulation Using the Deformable Mirror Eigenmode Method -- 7.3.1 Influence of Turbulence Intensity -- 7.3.2 Fast Stable "]
[{"$nulls":4},"Convergence -- 7.3.3 Comparison of Different Correction Algorithms -- 7.4 Deformable Mirror Eigenmode Method -- 7.4.1 The Deformable Mirror Influence Function and Its Eigenmode -- 7.4.2 Static Aberration Correction Experiment -- 7.4.3 Field Experiment -- References."]
[{"$nulls":4},"8 Vortex Beam Wave Front Correction Without Using a Wave Front Detector -- 8.1 Vortex Beam Propagation Characteristics Through Atmospheric Turbulence -- 8.1.1 Laguerre-Gaussian (LG) Beam -- 8.1.2 Vortex Beam Transmission Through Atmospheric Turbulence -- 8.1.3 Orbital Angular Momentum (OAM) of the Vortex Beam -- 8.2 Wave Front Correction Using the Phase Difference Method -- 8.2.1 Principles of Wave Front Correction Using the Phase Difference Method -- 8.2.2 Numerical Simulation of Vortex Beam Correction Using the Phase Difference Method -- 8.2.3 Convergence Analysis of the Phase Distribution Algorithm -- 8.3 Vortex Beam Correction Using the Gerchberg-Saxton (GS) Algorithm -- 8.3.1 Correction Principle -- 8.3.2 Simulation Results -- 8.4 Stochastic Parallel Gradient Descent (SPGD) Algorithm -- 8.5 Wave Front Distortion Correction Experiment Using the GS and SPGD Algorithms -- 8.5.1 GS Algorithm -- 8.5.2 SPGD Algorithm -- References -- 9 Liquid Crystal Adaptive Optics -- 9.1 Principles of Liquid Crystal Phase Modulation -- 9.1.1 Structure of a liquid crystal spatial light modulator (LC-SLM) -- 9.1.2 Principles of am LC-SLM -- 9.1.3 Wave Front Distortion Control Method -- 9.2 Phase Calibration Principles of LC-SLM -- 9.2.1 Interference Fringe Movement Method -- 9.2.2 Experimental Principle of the Interference Fringe Movement Method -- 9.3 Phase Calibration Experiment -- 9.3.1 Reflective LC-SLM Phase Calibration Experiment -- 9.3.2 Least Squares Fitting -- 9.4 Reflective LC-SLM Spatial Coherent Optical Communication Wave Front Correction System -- 9.4.1 Wave Front Correction Principle Using a Reflective LC-SLM -- 9.4.2 Basic Composition of the Wave Front Correction System -- 9.5 Principles of Wave Front Measurement -- 9.5.1 Static Wave Front Measurement Using the Transverse Shear Interferometer."]
[{"$nulls":4},"9.5.2 Shack-Hartmann Real-Time Wave Front Measurement Principle -- 9.6 Wave Front Reconstruction -- 9.6.1 Zernike Polynomial -- 9.6.2 Wave Front Reconstruction Using the Zernike Polynomial -- 9.7 Reflective LC-SLM Wave Front Correction Experiment -- 9.7.1 Static Wave Front Correction -- 9.7.2 Field Experiment -- References -- 10 Wave Front Variations of Gaussian Beams with Different Wavelengths Propagating in Atmospheric Turbulence -- 10.1 Beam Propagation in Turbulence -- 10.1.1 Wave Front Fluctuation Variance Corresponding to Different Wavelengths -- 10.1.2 Wave Front Fluctuation of Different Wavelength Beams -- 10.2 Dual Wavelength Adaptive Optics -- 10.2.1 Adaptive Optics (AO) -- 10.2.2 Influence of the Wave Front Sensor on Detection Performance -- 10.3 Influence of the Wave Front Corrector -- 10.3.1 Impact of System Bandwidth -- 10.3.2 Wave Front Correction Coefficient Corresponding to Wavelength -- 10.4 Numerical Simulation and Analysis -- 10.4.1 Numerical Simulation of Global Wave Front Variance -- 10.4.2 Wave Front Correlation -- 10.4.3 Wave Front Spatial Differences on the Receiving Aperture -- 10.4.4 Correction Status with Correction Factor -- 10.4.5 Wave Front Distortion Experiment Corresponding to Different Wavelengths -- References -- 11 Adaptive Control of Large Amplitude Wave Front Distortion and Tilt -- 11.1 Residual Correction of Large Amplitude Wave Front Distortion -- 11.1.1 Theoretical Analysis of Large Amplitude Wave Front Distortion -- 11.1.2 Simulation analysis of large amplitude wave front distortion -- 11.1.3 Experimental Study -- 11.2 Adaptive Optical Wave Front Distortion Correction Using Wave Front Tilt Correction -- 11.2.1 Theoretical wave Front Distortion "]
[{"$nulls":4},"in Atmospheric Turbulence -- 11.2.2 Wave Front Distortion Experiment in Atmospheric Turbulence -- References."]
[null,"3.","Record Nr.",null,"UNINA9910970597703321"]
[null,null,"Autore",null,"Yepez-Garcia Rigoberto Ariel"]
[null,null,"Titolo",null,"Mitigating vulnerability to high and volatile oil prices : : power sector experience in Latin America and the Caribbean / / Rigoberto Ariel Yepez-Garcia, Julie Dana"]
[null,null,"Pubbl/distr/stampa",null,"Washington, D.C. : , : World Bank, , c2012"]
[null,null,"ISBN",null,"9786613693440"]
[{"$nulls":4},"9781280783050"]
[{"$nulls":4},"1280783052"]
[{"$nulls":4},"9780821395783"]
[{"$nulls":4},"0821395785"]
[null,null,"Edizione",null,"[1st ed.]"]
[null,null,"Descrizione fisica",null,"pages cm"]
[null,null,"Collana",null,"Directions in development. Energy and mining"]
[null,null,"Disciplina",null,"338.2/3282098"]
[null,null,"Soggetti",null,"Petroleum products - Prices - Latin America"]
[{"$nulls":4},"Petroleum products - Prices - Caribbean Area"]
[{"$nulls":4},"Energy consumption - Latin America"]
[{"$nulls":4},"Energy consumption - Caribbean Area"]
[{"$nulls":4},"Energy policy - Latin America"]
[{"$nulls":4},"Energy policy - Caribbean Area"]
[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."]
[null,null,"Nota di contenuto",null,"Contents; Foreword; Acknowledgments; Abbreviations; Units of Measure; Executive Summary; Oil Price Evolution and Risk Exposure; Figures; ES.1 Oil Trade Balance as a Percentage of GDP; Who Bears the Risk Burden?; Reducing Short-Term Price Uncertainty; Reducing Oil Consumption over the Long Run; What Can Be Done; How Much Can It Help?; Tables; ES.1 Overlapping Time Frames for Implementing Alternatives to Manage Oil Price Volatility; Chapter 1 Introduction; Effects of High and Volatile Oil Prices; 1.1 Evolution of WTI Oil Prices and Volatility, 2000-12; Study Background and Objective"]
[{"$nulls":4},"Structure of This ReportNotes; References; Chapter 2 Economic Effects of High and Volatile Oil Prices; Effects of High Oil Prices; Effects of Oil Price Volatility; What Is the Risk Distribution?; 2.1 Pricing, Utility Ownership, and Stakeholder Relationships; 2.1 Distribution Scenarios of Higher Energy Costs; Boxes; 2.1 Reducing the Cost Burden of Subsidies; Summary Remarks; Notes; References; Chapter 3 Economic Indicators "]
[{"$nulls":4},"of Vulnerability: Analysis of Latin America and the Caribbean; Oil Trade Dynamics; 3.1 Country and Subregional Comparisons of Oil Imports as Share of GDP"]
[{"$nulls":4},"3.2 Ratio of Net Oil Imports or Exports to GDP in LAC Countries3.3 Comparisons of Primary Energy Supply by Source, 2008; Oil Exporter versus Importer; 3.1 Regional Energy Cooperation for Socioeconomic Development; 3.1 Oil Imports in Central America, 2006-08; 3.2 Oil Expenditure as Share of GDP in Central America, 2006-08; Dynamics of Oil Price Hikes and Subsidies; 3.4 Growth Effect Comparisons from Higher Oil Prices in Latin America and the Caribbean; 3.3 Macroeconomic Effects of Higher Oil Prices in Selected Countries of Latin America and the Caribbean"]
[{"$nulls":4},"3.4 Change in Energy Subsidies in Central America, 2007-08Summary Remarks; Notes; References; Chapter 4 Managing Oil Price Dynamics in the Power Sector: Experience in Latin America and the Caribbean; Oil-Dependent Energy Mix and Cost of Power Generation; Distribution of Costs and Risks; 4.1 Electricity Generation Mix in Selected Countries and Regions, 2007; 4.1 Oil Price Exposure in Guatemala; 4.2 Impact of Oil Price Changes on Power Generation Costs, 2006; 4.1 Electricity Market Structure in Central America and the Caribbean"]
[{"$nulls":4},"4.2 Majority Ownership of Power Utilities in Countries of Central America and the CaribbeanEconomic Impacts on the Sector; 4.2 Subsidies and Fiscal Vulnerability in Honduras; 4.3 Pricing Policy Trade-Offs in Guyana; 4.4 Peru's Oil Stabilization Fund; Summing Up; Note; Reference; Chapter 5 Price Risk Management Instruments; Overview of Instruments; 5.1 Overview of Selected Hedging Instruments: Advantages and Disadvantages; Risk Assessment; 5.1 Prices of WTI Crude Oil, Heating Oil, and HFO, 2001-10; Hedging Possibilities for Power Market Agents"]
[{"$nulls":4},"5.1 Hedging Natural Gas for Mexican Generators and Final Consumers"]
[null,null,null,"Sommario/riassunto","This book addresses the need of oil-importing countries to mitigate vulnerability to oil price volatility. It offers financial instruments to manage price risk, complemented by structural measures designed to reduce oil consumption."]