Epistolario / Enrico Kleist ; scelta, traduzione e introduzione di Giancarlo Stuparich

• Record Nr.: UNISA990003480840203316
• Autore: KLEIST, Heinrich : von
• Pubbl/distr/stampa: Lanciano : Carabba, 2010
• ISBN: 978-88-6344-091-1
• Edizione: [Ristampa anastatica]
• Descrizione fisica: 155 p. ; 20 cm
• Collana: Cultura dell'anima ; 61
• Disciplina: 832.6
• Collocazione: II.1. Coll. 23/ 41
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Riproduzione dell'edizione del 1919

Large-scale structures in acoustics and electromagnetics : proceedings of a symposium / / Board on Mathematical Sciences, Commission on Physical Sciences, Mathematics, and Applications, National Research Council

• Record Nr.: UNINA9910961069703321
• Pubbl/distr/stampa: Washington, D.C., : National Academy Press, 1996
• ISBN: 1-280-19268-2; 9786610192687; 0-309-56094-2; 0-585-15412-0
• Edizione: [1st ed.]
• Descrizione fisica: 1 online resource (264 p.)
• Disciplina: 620.2/01/51
• Soggetti: Structural analysis (Engineering) - Mathematical models; Large scale systems - Mathematical models; Acoustical engineering - Mathematical models; Electromagnetism - Mathematical models
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Symposium held on September 26-27, 1994, in Washington, D.C.
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: Large-Scale Structures in Acoustics and Electromagnetics -- Copyright -- Preface -- Contents -- Opening Remarks -- Introduction -- 1 High-Order, Multilevel, Adaptive Time-Domain Methods For Structural Acoustics Simulations -- INTRODUCTION -- A FLUID-SOLID INTERACTION PROBLEM -- Statement of the Problem -- Velocity-Displacement Formulation -- Velocity-Stress Formulation -- HIGH-ORDER TAYLOR-GALERKIN (TG) METHODS -- Approximation in Time -- Approximation in Space -- HIGHLY ABSORBING BOUNDARY CONDITIONS -- Model Problem -- A Family of Highly Absorbing Boundary Conditions -- Remarks: -- Operators And For Taylor-Galerkin Schemes -- ADAPTIVITY -- A FREQUENCY-DOMAIN APPROACH -- The Galerkin-Burton-Miller Formulation -- NUMERICAL EXAMPLES -- Example 1: Diffraction of a Plane Wave from an Elastic Cylindrical Shell (2D) -- Acoustic Fluid -- Elastic Cylinder -- Example 2: The Vibrating Cylinder Problem -- Example 3: The Coupled FE/BE ; Methods versus the Time-Domain Method -- ACKNOWLEDGMENT -- REFERENCES -- 2 Distributed Feedback Resonators -- INTRODUCTION -- THE EQUATIONS OF DISTRIBUTED FEEDBACK GRATING -- THE REFLECTION FILTER -- THE QUARTER WAVE SHIFTED DFB RESONATOR -- SIDE-COUPLED RESONATORS -- PHOTONIC BANDGAP CRYSTALS -- REFERENCES -- 3 Acoustic, Elastodynamic, and Electromagnetic Wavefield Computation-A Structured Approach Based on Reciprocity -- INTRODUCTION -- THE BASIC FIELD EQUATIONS -- Notation -- The First-order System of Wave Equations -- The Reciprocity Concatenation Matrices -- Point-source Solutions -- Green's Tensors -- THE RECIPROCITY THEOREMS -- The Reciprocity Theorem of the Time-convolution Type -- The Reciprocity Theorem of the Time-correlation Type -- Reciprocity Property of the Causal Green's Tensor -- EMBEDDING PROCEDURE, CONTRAST-PROPERTIES FORMULATION -- Contrast Formulation for Finite-element/Finite-difference Modeling.; Contrast Formulation for Integral-equation/Method-of-Moments Modeling -- FINITE-ELEMENT/FINITE-DIFFERENCE MODELING -- Embedding Procedure -- METHOD-OF-MOMENTS MODELING -- COMPLEX FREQUENCY-DOMAIN MODELING OF WAVE PROBLEMS -- CONCLUDING REMARKS -- ACKNOWLEDGMENT -- REFERENCES -- APPENDIX 3A. STRUCTURE OF THE SPATIAL DIFFERENTIAL OPERATOR -- Acoustic Waves in Fluids -- Elastic Waves in Solids -- Electromagnetic Waves -- 4 Numerical Modeling of the Interactions of Ultrafast Optical Pulses with Nonresonant and Resonant Materials and Structures -- INTRODUCTION -- MAXWELL EQUATIONS SOLVER FOR LINEAR DISPERSIVE MEDIA -- MAXWELL'S EQUATION SOLVER IN LINEAR AND NONLINEAR MEDIA -- MAXWELL'S EQUATION SOLVER IN MULTILEVEL ATOM MEDIUM -- CONCLUSIONS -- REFERENCES -- 5 Algorithmic Aspects And Supercomputing Trends In Computational Electromagnetics -- INTRODUCTION -- Computational Electromagnetics -- Objectives -- CEM Issues -- Maxwell's Equations -- Finite-Volume Treatment -- Space/Time Discretization -- Polynomial Representation and Least Squares -- The Unstructured Second-Order Algorithm -- Material Properties -- Resistance Cards -- Perfectly Conducting Surface -- Lossy Materials and Dispersive Media -- Impedance Boundaries -- Anisotropic Media -- Chiral Media -- Cracks, Gaps, and Wires -- Boundary Conditions -- Perfect Conductors -- Outer Boundaries -- Material Interface -- Geometry/Gridding -- Massively Parallel Computing -- Validation -- PRESENT CEM CAPABILITY -- ACKNOWLEDGMENT -- REFERENCE -- 6 Adaptive Finite Element Methods for the Helmholtz Equation in Exterior Domains -- INTRODUCTION -- Adaptive Methods -- PROBLEM STATEMENT AND ADAPTIVE SOLUTION METHODOLOGIES -- Problem Statement -- Adaptive Solution Methodologies -- Mesh Generation -- Finite Element Formulations -- A Posteriori Error Estimation -- Hp-Adaptive Strategy -- Remarks:.; NONUNIFORM RADIATION FROM A RIGID INFINITE CIRCULAR CYLINDER -- Galerkin Results -- Remarks: -- GLS Results -- CONCLUSIONS -- ACKNOWLEDGMENT -- REFERENCES -- 7 Modeling of Optically "Assisted" Phased Array Radar -- INTRODUCTION -- STATE-OF-THE-ART INDUSTRIAL MODELING -- VLSI Design -- Microwave System Design -- Optical System Analysis -- RECENT MODELING RESULTS FROM GWOL -- SOME CONCLUDING REMARKS -- REFERENCES -- 8 Synthesis And Analysis Of Large-Scale Integrated Photonic Devices And Circuits -- INTRODUCTION -- INVERSE SCATTERING THEORY -- DESIGN EXAMPLE 1: ZERO REFLECTION COEFFICIENT -- DESIGN EXAMPLE 2: NON-ZERO REFLECTION COEFFICIENT -- DESIGN EXAMPLE 3: NONRATIONAL REFLECTION COEFFICIENT -- Discretization of the G-L-; M Equation -- Iteration Scheme With Relaxation -- Initial Values For K(x, t) -- Reconstruction of the Potential v(x) -- DISCUSSION -- REFERENCES -- 9 Design and Analysis of Finite Element Methods for Transient and Time-Harmonic Structural Acoustics -- INTRODUCTION -- THE TRANSIENT STRUCTURAL ACOUSTICS PROBLEM -- SPACE-TIME FINITE ELEMENT FORMULATION -- Finite Element Discretization -- Trial structural displacements -- Trial fluid potential -- SPACE-TIME VARIATIONAL EQUATIONS -- Exact Nonreflecting Boundary Conditions -- ANALYSIS OF THE SPACE-TIME FORMULATION -- Stability Analysis -- Galerkin Least-Squares Stabilization -- Convergence Analysis -- REPRESENTATIVE NUMERICAL EXAMPLE -- ITERATIVE SOLUTION OF LARGE-SCALE TIME-HARMONIC PROBLEMS -- Model Boundary Value Problem -- H-HIERARCHICAL BASIS PRECONDITIONER -- Formulation of the Preconditioner -- Implementation Issues -- Selection of Multiple Levels -- Matrix-Free Computations -- REPRESENTATIVE NUMERICAL EXAMPLES -- CONCLUSION -- REFERENCES -- 10 An Overview of the Application of the Method of Moments to Large Bodies in Electromagnetics -- INTRODUCTION.; OVERVIEW OF THE METHOD OF MOMENTS -- SUMMARY OF METHODS -- Iterative Solutions -- Reducing the Number of Iterations -- The Fast Multipole Method -- Recursive Methods -- Exact Fixed Step Methods -- Spatial Decomposition -- Sparse Matrix Methods -- The Impedance Matrix Localization Method -- Wavelet Basis Functions -- Novel Expansion Methods -- Hybrid Methods -- The Hybrid MM/GTD Method -- The Hybrid GTD/MM Method -- CONCLUSIONS -- REFERENCES -- 11 Discussion -- OPEN DISCUSSION -- PANEL DISCUSSION -- Appendices -- Appendix A Symposium Agenda -- Appendix B Speakers -- Appendix C Symposium Participants.
• Sommario/riassunto: This book focuses on computational methods to determine the dynamics of large-scale electromagnetic, acoustic, and mechanical systems, including those with many substructures and characterized by an extended range of scales. Examples include large naval and maritime vessels, aerospace vehicles, and densely packed microelectronic and optical integrated circuits (VLSI). The interplay of time and frequency-domain computational and experimental procedures was addressed, emphasizing their relationship and synergy, and indicating mathematics research opportunities.

Cloud Computing, Big Data & Emerging Topics : 10th Conference, JCC-BD&ET 2022, La Plata, Argentina, June 28–30, 2022, Proceedings / / edited by Enzo Rucci, Marcelo Naiouf, Franco Chichizola, Laura De Giusti, Armando De Giusti

• Record Nr.: UNINA9910586577603321
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2022
• ISBN: 3-031-14599-2
• Edizione: [1st ed. 2022.]
• Descrizione fisica: 1 online resource (146 pages)
• Collana: Communications in Computer and Information Science, , 1865-0937 ; ; 1634
• Disciplina: 005.7; 004.6782
• Soggetti: Computer engineering; Computer networks; Computers; Application software; Computer Engineering and Networks; Computing Milieux; Computer and Information Systems Applications
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di contenuto: Intro -- Preface -- Organization -- Contents -- Cloud and High-Performance Computing -- File Access Patterns of Distributed Deep Learning Applications -- 1 Introduction -- 2 Related Work -- 3 Characterizing the I/O Patterns Models of DDL Applications -- 3.1 Software Stack DL -- 3.2 File Access Pattern -- 4 Experimental Data-extraction for File Access Pattern Modelling Characterization -- 4.1 Experimental Environment -- 4.2 Mechanisms Used to Characterize File Access Patterns -- 4.3 Characterization of File Access Patterns to the CIFAR-10 Dataset -- 4.4 Characterization of File Access Patterns to the MNIST Dataset -- 5 Conclusions -- References -- A Survey on Billing Models for Cloud-Native Applications -- 1 Introduction -- 2 Systematic Literature Review -- 3 Main Findings and Discussion -- 4 Conclusions ; and Research Opportunities -- References -- Performance Analysis of AES on CPU-GPU Heterogeneous Systems -- 1 Introduction -- 2 Background -- 2.1 AES Algorithm -- 2.2 Characterization of Heterogeneous Systems -- 2.3 Related Work -- 3 Previous Implementations of AES -- 3.1 AES for Multicore CPU -- 3.2 AES for Single-GPU and Multi-GPU -- 4 AES for CPU-GPU Heterogeneous Systems -- 5 Experimental Results -- 6 Conclusions and Future Work -- References -- Network Traffic Monitor for IDS in IoT -- 1 Introduction -- 2 Network Traffic Monitor Architecture -- 3 Deployment and Testing -- 3.1 Creating Topology Elements. OpenFlow Switch -- 3.2 Creating Links Between Components -- 3.3 Connecting the Monitor -- 3.4 Creating Host 1 and Host 2 -- 3.5 Connecting Host 1 and Host 2 -- 4 Creating SDN Controller and Traffic Sniffer -- 5 Conclusions and Future Work -- References -- Crane: A Local Deployment Tool for Containerized Applications -- 1 Introduction -- 2 Container Management Architecture Precedents -- 2.1 SWITCH -- 2.2 COCOS.; 2.3 Lightweight Kubernetes Distributions -- 3 Design Evolution of Crane -- 3.1 Instances Load Balancing -- 3.2 Container Automatic Scaling -- 3.3 Detected Implementation Problems -- 4 Conclusions and Future Work -- References -- Machine and Deep Learning -- Multi-class E-mail Classification with a Semi-Supervised Approach Based on Automatic Feature Selection and Information Retrieval -- 1 Introduction -- 2 Background -- 3 Research Methodology -- 3.1 Description of the Dataset -- 3.2 Labeling of Documents -- 3.3 Email Indexing -- 3.4 Feature Selection Strategies -- 3.5 Retrieval of E-mails -- 3.6 Generation of the Classification Models -- 4 Experiments -- 5 Conclusions -- References -- Applying Game-Learning Environments to Power Capping Scenarios via Reinforcement Learning -- 1 Introduction -- 2 The RLlib and Gym Frameworks -- 2.1 RLlib -- 2.2 Gym -- 3 RL for Resource Management -- 4 Casting a Power Capping Scenario with Gym -- 4.1 Defining States -- 4.2 Defining Actions and Rewards -- 5 Experimental Results -- 5.1 Analysis Under Different Power Caps -- 5.2 Impact of the State and Action Definitions -- 5.3 Behaviour Under Different Workloads -- 6 Related Work -- 7 Conclusions -- References -- Solving an Instance of a Routing Problem Through Reinforcement Learning and High Performance Computing -- 1 Introduction -- 2 Previous Concepts -- 2.1 Vehicle Routing Problem -- 2.2 Computational Intelligence -- 2.3 Agents and Their Learning -- 2.4 High Performance Computing in GPU -- 3 Prescriptive Model to RT-CUD-VRP -- 3.1 Environment -- 3.2 Agent Actions -- 3.3 Observations -- 3.4 Rewards -- 3.5 Value Function and Policy -- 4 Experimental Study -- 5 Conclusions and Future Works -- References -- Virtual Reality -- A Cross-Platform Immersive 3D Environment for Algorithm Learning -- 1 Introduction -- 2 Related Works -- 3 Motivation -- 3.1 R-Info.; 4 3D Mobile Application Development -- 5 Results -- 6 Conclusions -- 7 Future Works -- References -- Author Index.
• Sommario/riassunto: This book constitutes the revised selected papers of the 10th International Conference on Cloud Computing, Big Data & Emerging Topics, JCC-BD&ET 2022, held in La Plata, Argentina*, in June-July 2022. The 9 full papers were carefully reviewed and selected from a total of 23 submissions. The papers are organized in topical sections on: Parallel and Distributed Computing; Machine and Deep Learning; Cloud and High-Performance Computing, Machine and Deep Learning, and Virtual Reality.