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Phase Optimization Problems
This is the only book available in English language to consider inverse and optimization problems in which phase field distributions are used as optimizing functions. The mathematical technique used relates to nonlinear integral equations, with numerical methods developed and applied to concrete problems. Written by a team of outstanding and renowned experts in the field, this monograph will appeal to all those dealing with the investigation, design, and optimization of electromagnetic and acoustic radiating and transmitting devices and systems, while also being of interest to mathematicians working on the theory of nonlinear integral equations.
Phase Optimization Problems
This is the only book available in English language to consider inverse and optimization problems in which phase field distributions are used as optimizing functions. The mathematical technique used relates to nonlinear integral equations, with numerical methods developed and applied to concrete problems. Written by a team of outstanding and renowned experts in the field, this monograph will appeal to all those dealing with the investigation, design, and optimization of electromagnetic and acoustic radiating and transmitting devices and systems, while also being of interest to mathematicians working on the theory of nonlinear integral equations.
Antenna Synthesis through the Characteristics of Desired Amplitude
The book is devoted to the synthesis problems that arise in the theory and design of radiating systems (antennas). The characteristics of desired amplitude are data placed into a synthesis problem. A synthesis problem belongs to a class of inverse problems and its aim is to determine a distribution of current or fields in an antenna, which produces the amplitude radiation characteristic as close as possible to the desired one. Freedom of choice of phase distribution of the desired radiation pattern (RP) is used as an additional possibility of better approximation to such RPs. This book studies various different types of antennas and arrays as the radiation systems under consideration. A special class of problems related to acoustic and electromagnetic scattering on a set of bodies (particles) of small size is also discussed, while the constructive procedures of creating inhomogeneous materials with specific properties are proposed.
Glory to Ukraine: Speeches of President Zelenskyy
Glory to Ukraine (Slava Ukraini) is a Ukrainian national salute, known as a symbol of Ukrainian sovereignty and resistance. This phrase became very popular among Ukrainian soldiers and their supporters to boost morale following the Russian invasion of Ukraine. It has been used in speeches by numerous Ukrainian politicians including President Volodymyr Zelenskyy. This edition brings all the speeches president Zelenskyy delivered since the invasion started and they describe the determination of Ukrainians to defend their land from Russian aggression in the best possible way. Content: Introduction: Main Facts About the Russian Invasion The History of Russia's War in Ukraine: Military and Intell...
Russian Invasion of Ukraine: Identity, History & Conflict
On 24 February 2022, Russia invaded Ukraine in a major escalation of the Russo-Ukrainian War, which began in 2014. Following the 2014 Ukrainian Revolution, Russia annexed Crimea, and Russian-backed paramilitaries seized part of the Donbas region of south-eastern Ukraine, which consists of Lugansk and Donetsk oblasts, sparking a regional war. In March 2021, Russia began a large military build-up along its border with Ukraine, eventually amassing up to 190,000 troops and their equipment. Despite the build-up, denials of plans to invade or attack Ukraine were issued by various Russian government officials up to the day before the invasion. On 21 February 2022, Russia recognized the Donetsk Peop...
War Speeches V
This is volume V of the complete and unabridged English edition of Volodymyr Zelenskyy’s speeches to the Ukrainian and Russian people, to foreign governments, parliaments, and to international organizations since the eve of the war. About this volume Ukraine, July 2022. Russian rockets on Mykolaiv and Kharkiv, Kryvy Rih, and the communities of the Zaporizhzhia region. The urge of rebuilding the country. Dismissal of Andrij Melnyk, ambassador of Germany. Additional precision weapons and Himars from the United States. Canada delivers on German pressure Siemens Nordstream Turbine to please Russia. Polish Krab mobile howitzers delivered and in action. Efforts for unblocking of agricultural exp...
Generalized Method of Eigenoscillations in Diffraction Theory
The book presents a new method for solving various diffraction and scattering problems in acoustics, electrodynamics, and quantum mechanics. Each version of the method is based on the representation of the diffracted field in the form of a series in the eigenfunctions of an auxiliary homogeneous problem in which the spectral parameter is usually not the frequency. This allows one to treat problems not only in bounded but also in unbounded domains or in the entire space. For example, for the problem of diffraction on a metallic body, the homogeneous problem of the same form can be used with impedance as the spectral parameter. The transparency coefficient, the dielectric constant, etc. can also be used as the spectral parameter. The method is especially effective for the analysis of resonance systems, in particular, of open resonators and waveguides. The method permits one to represent the exact solution in unbounded domains in the form of a series (since the spectrum is discrete), without an additional integral with respect to the spectral parameter, and use the variational approach though the corresponding problems are usually nonself-adjoint.
Key Technologies for 5G Wireless Systems
Get up to speed with the protocols, network architectures and techniques for 5G wireless networks with this comprehensive guide.
High-frequency Electrodynamics
This first book to develop the theoretical basics from the concept of guided wave optics is all set to become a standard in fundamental concepts of electromagnetic waves within the field of telecommunications. Maxwell equations Plane waves Closed waveguides Closed Resonators Open Lines Backgrounds of Antenna Theory Diffraction on Metallic and Dielectric Objects Complementary References With its chapters on high frequency waveguides this book is aimed at both scientists and professionals in electrical engineering and telecommunications.
Come On!
Current worldwide trends are not sustainable. The Club of Rome’s warnings published in the book Limits to Growth are still valid. Remedies that are acceptable for the great majority tend to make things worse. We seem to be in a philosophical crisis. Pope Francis says it clearly: our common home is in deadly danger. Analyzing the philosophical crisis, the book comes to the conclusion that the world may need a “new enlightenment”; one that is not based solely on doctrine, but instead addresses a balance between humans and nature, as well as a balance between markets and the state, and the short versus long term. To do this we need to leave behind working in ”silos” in favor of a more...
