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"Cybernetics is the interdisciplinary study of controlling the flow of information in systems with feedback loops, be they biological, mechanical, cognitive, or social. This book is widely cited for laying the theoretical foundations of information theory and influencing the development of error-correcting servomechanisms, autonomous navigation, analog computing, artificial intelligence, and neuroscience"--

Telecommunication technology --- Information systems --- cybernetics --- Cybernetics. --- Control theory. --- System theory. --- Systems, Theory of --- Systems science --- Science --- Dynamics --- Machine theory --- Mechanical brains --- Control theory --- Electronics --- System theory --- Philosophy

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Journal of physics, complexity presents scientific developments in physics-related theoretical, experimental, and applied research that contributes to our understanding of complex systems and networks. As an interdisciplinary journal, it welcomes submissions from: physics, biology, chemistry, environmental science, social sciences, economics, and related fields All research related to complex systems and networks is in scope, including interdisciplinary and multidisciplinary studies. Coverage includes: Artificial intelligence and machine learning, Biological and physical systems, City and regional planning, Climate change and sustainability, Cognitive, language, and informational networks, Computational assembly science and engineering, Economic and financial systems, Human behaviour, social-evolutionary dynamics, Online social networks and the Internet, Quantum networks

complex networks --- complex systems --- System theory --- Physics --- Statistical physics --- Research --- Research. --- Systems science --- Systems, Theory of --- Science --- Mathematical statistics --- Physical research --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Philosophy --- Statistical methods --- Physics. --- Statistical physics. --- System theory.

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Social networks --- System analysis --- System theory --- Computer science --- Computer science. --- System analysis. --- System theory. --- Research --- Research. --- Systems, Theory of --- Systems science --- Network theory --- Systems analysis --- Informatics --- Networking, Social --- Networks, Social --- Social networking --- Social support systems --- Support systems, Social --- Science --- Mathematical optimization --- Interpersonal relations --- Cliques (Sociology) --- Microblogs --- Philosophy --- Network analysis --- Network science

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This open access book presents a comprehensive survey of modern operator techniques for boundary value problems and spectral theory, employing abstract boundary mappings and Weyl functions. It includes self-contained treatments of the extension theory of symmetric operators and relations, spectral characterizations of selfadjoint operators in terms of the analytic properties of Weyl functions, form methods for semibounded operators, and functional analytic models for reproducing kernel Hilbert spaces. Further, it illustrates these abstract methods for various applications, including Sturm-Liouville operators, canonical systems of differential equations, and multidimensional Schrödinger operators, where the abstract Weyl function appears as either the classical Titchmarsh-Weyl coefficient or the Dirichlet-to-Neumann map. The book is a valuable reference text for researchers in the areas of differential equations, functional analysis, mathematical physics, and system theory. Moreover, thanks to its detailed exposition of the theory, it is also accessible and useful for advanced students and researchers in other branches of natural sciences and engineering.

Operator theory. --- Differential equations. --- Partial differential equations. --- System theory. --- Operator Theory. --- Ordinary Differential Equations. --- Partial Differential Equations. --- Systems Theory, Control. --- Systems, Theory of --- Systems science --- Science --- Partial differential equations --- 517.91 Differential equations --- Differential equations --- Functional analysis --- Philosophy --- Mathematics --- Operator theory --- System theory --- Differential equations, Partial.

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"Mercury offers an opportunity to trace a millennial-scale history of human interactions with an element whose use has both benefited and harmed human well-being in complex and interacting ways. The book develops and applies an analytical framework using the perspective of a human-technical-environmental system to learn from the long history of human mercury use and exposure, and to inform strategies--here done in story form--by which people can effect change towards greater sustainability"--

Sustainable development. --- Mercury --- Mercury industry and trade --- Environmental aspects. --- Chemical industry --- Nonferrous metal industries --- Development, Sustainable --- Ecologically sustainable development --- Economic development, Sustainable --- Economic sustainability --- ESD (Ecologically sustainable development) --- Smart growth --- Sustainable development --- Sustainable economic development --- Economic development --- Environmental aspects --- ENVIRONMENT/Sustainability --- ENGINEERING/Systems Science & Engineering --- ENVIRONMENT/Environmental Science