This book collects a selection of papers presented at ELECTRIMACS 2019 - The 13th international conference of the IMACS TC1 Committee, held in Salerno, Italy, on 21st-23rd May 2019. The conference papers deal with modelling, simulation, analysis, control, power management, design optimization, identification and diagnostics in electrical power engineering. The main application fields include electric machines and electromagnetic devices, power electronics, transportation systems, smart grids, electric and hybrid vehicles, renewable energy systems, energy storage, batteries, supercapacitors and fuel cells, wireless power transfer. The contributions included in Volume 2 are particularly focussed on methodological aspects, modelling and applied mathematics in the field of electrical engineering.

This book highlights the synthesis of polarization selection system in the background of passive noise formed by reflections from space-distributed targets. This synthesis is fulfilled as close as possible to its ideal configuration in terms of maximal signal-to-noise ratio for the matched load of radar station antenna system. It presents a new approach to radar system resolution enhancement based on the development of mathematical model for radiometric receivers with mono-pulse antenna systems, as well as creation of a new algorithm that allows increasing angular resolution during the object's search and tracking due to special signal processing.

The Physics of Music by ALEXANDER WOOD M. A.., I. SG, 3 Late Fellow of Emmanuel College, Cambridge revised by J. 3V1. BOWSHER METHUEN CO LTD 36 ESSEX STREET - STRAND - W. C, 2 PREFACE TO FIRST EDITION i HOPE that this little book may serve as an introduction for some to the very interesting borderland between physics and music. It is a borderland in which the co-operation of musicians and physicists may have important results for the future of music. The typescript and proofs have been read by Miss Nancy Browne from the point of view of the general reader, and many obscure passages have been clarified. On the technical side I am indebted to Dr Pringle, who has read the proofs and given me valuable criticism and advice. Miss Cawkewell has helped me with the illustrations, Mr Cottingham has supplied the photographs for Figs. 1.7 to i. io, and my secretary. Miss Sindall, has been responsible for the typing and for the assembly and preparation of the material. Because of the help received from these and others the book is a much better book than it would otherwise have been. For its remaining imperfections I must take full responsibility. I should like also grateftdly to acknowledge the patience and consideration of the publishers and the way in which they have grappled with the difficulties of the production of a book of this kind in war-time. ALEX WOOD PREFACE TO THE SIXTH EDITION DR WOODS book was first published in 1944 and has enjoyed considerable popularity for many years as an introduction to the physics of sound for musicians. I have tried to preserve the flavour of the new original book as much as possible, but have felt it necessary to indicate the opinions of other authorities, where these differed greatly from Woods, with additional footnotes. The sections on the recording and reproduction of sound, and on the acoustics of buildings, have been largely rewritten in the light of modern developments. J. M. BOWSHER December, CONTENTS tSHAP. PAGE 1. THE NATURE OF SOUND . I 2. FORCED VIBRATION AND RESONANCE 23 3. INTENSITY AND LOUDNESS ...... 33 4. PITCH .......... 42 5. MUSICAL QUALITY . . . . . . . 6 1 O. THE EAR ......... 78 7. VIBRATIONS OF STRINGS ....... go 8. ORGAN PIPES . . . . . . . . IIO gT SUNDRY OTHER MUSICAL INSTRUMENTS . . . 132 IP. DISSONANCE AND CONSONANCE . . . . . - 157 11. SCALES AND TEMPERAMENT . . . . . 171 12. RECORDING AND REPRODUCTION OF SOUND . . . 2O2 13. HALLS AND CONCERT ROOMS . . . . . .223 BIBLIOGRAPHY ........ 252 INDEX OF SUBJECTS ....... 253 INDEX OF NAMES ........ 257 VI ILLUSTRATIONS FIG. PAGE 1.1. Wave-model facing 4 1.2. Wave diagram to illustrate propagation of waves ... 4 1.3 Simple harmonic motion ....... 4 1.4. Displacement diagram for simple harmonic wave . . . 5 i .5. Two successive positions of a wave to show direction of motion of the medium as the wave passes ..... 6 1.6. Relation between displacement, particle velocity, and density . 7 1.7. Reflected ripples with the source at one focus of an elliptical reflector and the reflected ripples converging to the other focus ........ . facing 5 1.8. Straight ripples focused by passing over an immersed lens which gives varying depth, and therefore varying speed for ripples facing 5 1.9. Ripples passing through an aperture and showing bending at the rages ....... . facing 5 i. to. Superposition of two sets of circular ripples showing nodal and antinodal lines . facing 5 i. i i.Stationary waves due to two equal sets of waves travelling in opposite directions ....... 12 1. 1 2. Motion of the air at four successive instants separated by one quarter of a period ....... 13 1.13. Wave diagram to illustrate stationary waves . . . 14 1.14. Refraction of sound-rays due to reversal of wind or temperature gradient ......... 18 1.15. Diagram of tuning-fork showing compression and rarefactions . 19 9.1. Coupled pendulums 25 2.2. Tuning-fork mounted on resonance box 26 2.3. Resonators used by Helmholtz for the analysis of sounds . facing 36 2.4...

This book reports on a study on physics problem solving in real classrooms situations. Problem solving plays a pivotal role in the physics curriculum at all levels. However, physics students' performance in problem solving all too often remains limited to basic routine problems, with evidence of poor performance in solving problems that go beyond equation retrieval and substitution. Adopting an action research methodology, the study bridges the `research-practical divide by explicitly teaching physics problem-solving strategies through collaborative group problem-solving sessions embedded within the curriculum. Data were collected using external assessments and video recordings of individual and collaborative group problem-solving sessions by 16-18 year-olds. The analysis revealed a positive shift in the students' problem-solving patterns, both at group and individual level. Students demonstrated a deliberate, well-planned deployment of the taught strategies. The marked positive shifts in collaborative competences, cognitive competences, metacognitive processing and increased self-efficacy are positively correlated with attainment in problem solving in physics. However, this shift proved to be due to different mechanisms triggered in the different students.

Microencapsulations may be found in a number of fields like medicine, drug delivery, biosensing, agriculture, catalysis, intelligent microstructures and in many consumer goods. This new edition of Microencapsulation revises chapters to address the newest innovations in fields and adds three new chapters on the uses of microencapsulations in medicine, agriculture, and consumer products.

This handbook is an edited version of the final report of the European Commission and IEA Bioenergy sponsored Pyrolysis Network that officially finished in 2004. It provides a companion volume to the first (ISBN 978-1-872691-07-7) and second (ISBN 978-1-872691-47-3) handbooks published in 1999 and 2002 respectively also available from CPL Press (www.cplpress.com). It is again intended that this will provide a useful guide both to newcomers to the subject area as well as those already involved in research, development and implementation. A significant feature of this third volume is the greater attention paid to wider issues concerning pyrolysis including environment, health and safety, norms and standards and marketability.

IMA Volumes 135: Transport in Transition Regimes and 136: Dispersive Transport Equations and Multiscale Models focus on the modeling of processes for which transport is one of the most complicated components. This includes processes that involve a wdie range of length scales over different spatio-temporal regions of the problem, ranging from the order of mean-free paths to many times this scale. Consequently, effective modeling techniques require different transport models in each region. The first issue is that of finding efficient simulations techniques, since a fully resolved kinetic simulation is often impractical. One therefore develops homogenization, stochastic, or moment based subgrid models. Another issue is to quantify the discrepancy between macroscopic models and the underlying kinetic description, especially when dispersive effects become macroscopic, for example due to quantum effects in semiconductors and superfluids. These two volumes address these questions in relation to a wide variety of application areas, such as semiconductors, plasmas, fluids, chemically reactive gases, etc.

Approximation Methods in Engineering and Science covers fundamental and advanced topics in three areas: Dimensional Analysis, Continued Fractions, and Stability Analysis of the Mathieu Differential Equation. Throughout the book, a strong emphasis is given to concepts and methods used in everyday calculations. Dimensional analysis is a crucial need for every engineer and scientist to be able to do experiments on scaled models and use the results in real world applications. Knowing that most nonlinear equations have no analytic solution, the power series solution is assumed to be the first approach to derive an approximate solution. However, this book will show the advantages of continued fractions and provides a systematic method to develop better approximate solutions in continued fractions. It also shows the importance of determining stability chart of the Mathieu equation and reviews and compares several approximate methods for that. The book provides the energy-rate method to study the stability of parametric differential equations that generates much better approximate solutions.

This book demonstrates some of the ways in which Microsoft Excel (R) may be used to solve numerical problems in the field of physics.

Dirac operators play an important role in several domains of mathematics and physics, for example: index theory, elliptic pseudodifferential operators, electromagnetism, particle physics, and the representation theory of Lie groups. In this essentially self-contained work, the basic ideas underlying the concept of Dirac operators are explored. Starting with Clifford algebras and the fundamentals of differential geometry, the text focuses on two main properties, namely, conformal invariance, which determines the local behavior of the operator, and the unique continuation property dominating its global behavior. Spin groups and spinor bundles are covered, as well as the relations with their classical counterparts, orthogonal groups and Clifford bundles. The chapters on Clifford algebras and the fundamentals of differential geometry can be used as an introduction to the above topics, and are suitable for senior undergraduate and graduate students. The other chapters are also accessible at this level so that this text requires very little previous knowledge of the domains covered. The reader will benefit, however, from some knowledge of complex analysis, which gives the simplest example of a Dirac operator. More advanced readers---mathematical physicists, physicists and mathematicians from diverse areas---will appreciate the fresh approach to the theory as well as the new results on boundary value theory.

IMA Volumes 135: Transport in Transition Regimes and 136: Dispersive Transport Equations and Multiscale Models focus on the modeling of processes for which transport is one of the most complicated components. This includes processes that involve a wide range of length scales over different spatio-temporal regions of the problem, ranging from the order of mean-free paths to many times this scale. Consequently, effective modeling techniques require different transport models in each region. The first issue is that of finding efficient simulations techniques, since a fully resolved kinetic simulation is often impractical. One therefore develops homogenization, stochastic, or moment based subgrid models. Another issue is to quantify the discrepancy between macroscopic models and the underlying kinetic description, especially when dispersive effects become macroscopic, for example due to quantum effects in semiconductors and superfluids. These two volumes address these questions in relation to a wide variety of application areas, such as semiconductors, plasmas, fluids, chemically reactive gases, etc.

Hadron colliders probe physics at new energy frontiers and search for new particles and forces. In addition, hadron colliders now provide also an environment for precision physics. The present volume collects the results from recently completed runs at major colliders as well as new ideas about collider physics and techniques. It will serve as the main source of reference in the field for many years to come.

Recent experimental evidence about the possibility of "absolute negative temperature" states in physical systems has triggered a stimulating debate about the consistency of such a concept from the point of view of Statistical Mechanics. It is not clear whether the usual results of this field can be safely extended to negative-temperature states; some authors even propose fundamental modifications to the Statistical Mechanics formalism, starting with the very definition of entropy, in order to avoid the occurrence of negative values of the temperature tout-court. The research presented in this thesis aims to shed some light on this controversial topic. To this end, a particular class of Hamiltonian systems with bounded kinetic terms, which can assume negative temperature, is extensively studied, both analytically and numerically. Equilibrium and out-of-equilibrium properties of this kind of system are investigated, reinforcing the overall picture that the introduction of negative temperature does not lead to any contradiction or paradox.

This comprehensive textbook on the quantum mechanics of identical particles includes a wealth of valuable experimental data, in particular recent results from direct knockout reactions directly related to the single-particle propagator in many-body theory. The comparison with data is incorporated from the start, making the abstract concept of propagators vivid and accessible. Results of numerical calculations using propagators or Green's functions are also presented. The material has been thoroughly tested in the classroom and the introductory chapters provide a seamless connection with a one-year graduate course in quantum mechanics. While the majority of books on many-body theory deal with the subject from the viewpoint of condensed matter physics, this book emphasizes finite systems as well and should be of considerable interest to researchers in nuclear, atomic, and molecular physics. A unified treatment of many different many-body systems is presented using the approach of self-consistent Green's functions. The second edition contains an extensive presentation of finite temperature propagators and covers the technique to extract the self-energy from experimental data as developed in the dispersive optical model.The coverage proceeds systematically from elementary concepts, such as second quantization and mean-field properties, to a more advanced but self-contained presentation of the physics of atoms, molecules, nuclei, nuclear and neutron matter, electron gas, quantum liquids, atomic Bose-Einstein and fermion condensates, and pairing correlations in finite and infinite systems, including finite temperature.

This book presents the proceedings of the international conference Particle Systems and Partial Differential Equations V, which was held at the University of Minho, Braga, Portugal, from the 28th to 30th November 2016. It includes papers on mathematical problems motivated by various applications in physics, engineering, economics, chemistry, and biology. The purpose of the conference was to bring together prominent researchers working in the fields of particle systems and partial differential equations, providing a venue for them to present their latest findings and discuss their areas of expertise. Further, it was intended to introduce a vast and varied public, including young researchers, to the subject of interacting particle systems, its underlying motivation, and its relation to partial differential equations. The book appeals to probabilists, analysts and also to mathematicians in general whose work focuses on topics in mathematical physics, stochastic processes and differential equations, as well as to physicists working in the area of statistical mechanics and kinetic theory.

Discusses in detail a World Formula, which is the unification of the greatest theories in physics, namely quantum theory and Einstein's general theory Demystifies David Hilbert's World Formula by simplifying the complex math involved in it Explains why nobody had realized Hilbert's immortal stroke of genius As a "Theory of Everything" approach, it automatically provides just the most holistic tools for each and every optimization, decision-making or solution-finding problem there can possibly be-be it in physics, social science, medicine, socioeconomy and politics, real or artificial intelligence or, rather generally, philosophy

The continued greening of the energy sector, with inroads being made through numerous sources of materials that can produce energy, is the main focus of this, Green Chemical Processing, Volume 8. It includes contributions from area experts in widely different fields, all involved in energy production, and makes connections to the 12 Principles of Green Chemistry.