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Decomposability of Tensors

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ISBN: 9783038975908 9783038975915 Year: Pages: 160 DOI: 10.3390/books978-3-03897-591-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mathematics --- Physics (General)
Added to DOAB on : 2019-02-15 09:41:46
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Tensor decomposition is a relevant topic, both for theoretical and applied mathematics, due to its interdisciplinary nature, which ranges from multilinear algebra and algebraic geometry to numerical analysis, algebraic statistics, quantum physics, signal processing, artificial intelligence, etc. The starting point behind the study of a decomposition relies on the idea that knowledge of elementary components of a tensor is fundamental to implement procedures that are able to understand and efficiently handle the information that a tensor encodes. Recent advances were obtained with a systematic application of geometric methods: secant varieties, symmetries of special decompositions, and an analysis of the geometry of finite sets. Thanks to new applications of theoretic results, criteria for understanding when a given decomposition is minimal or unique have been introduced or significantly improved. New types of decompositions, whose elementary blocks can be chosen in a range of different possible models (e.g., Chow decompositions or mixed decompositions), are now systematically studied and produce deeper insights into this topic. The aim of this Special Issue is to collect papers that illustrate some directions in which recent researches move, as well as to provide a wide overview of several new approaches to the problem of tensor decomposition.

Modelling and Simulation of Electrical Energy Systems through a Complex Systems Approach using Agent-Based Models

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ISBN: 9783866449466 Year: Pages: XIV, 181 p. DOI: 10.5445/KSP/1000031133 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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Complexity science aims to better understand the processes of both natural and man-made systems which are composed of many interacting entities at different scales. A disaggregated approach is proposed for simulating electricity systems, by using agent-based models coupled to continuous ones. The approach can help in acquiring a better understanding of the operation of the system itself, e.g. on emergent phenomena or scale effects; as well as in the improvement and design of future smart grids.

Standardization and Risk Governance

Authors: --- --- ---
ISBN: 9780367259730 Year: Pages: 306 Language: English
Publisher: Taylor & Francis
Subject: History --- Political Science --- Sociology
Added to DOAB on : 2020-05-04 10:28:46
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This multi-disciplinary book conceptualizes, maps, and analyses ongoing standardization processes of risk issues across various sectors, processes, and practices. Standards are not only technical specifications and guidelines to support efficient risk governance, but also contain social, political, economic, and organizational aspects. This book presents a variety of standardization processes and applications of standards that may influence our judgements of risk, the organizing of risk governance, and, accordingly, our behaviour. Standardization and standards can impact risk governance in different ways. The most important lessons drawn from the present volume can be summarized in three areas: (1) how standardization might impact on power relations and interests; (2) how standardization may change flexibility in decision-making, communication, and cooperation; and (3) how standardization could (re)direct attention and risk perception. The volume’s aim is to present an analysis of standardization processes and how it affects our thinking about risk, how we organize risk governance, and how standardization may influence risk management. In so doing, it contributes to a more informed discourse regarding the use of standards and standardization in contemporary risk management. Standardization and Risk Governance will be of great interest to students of risk, standardization, global governance, and critical security studies.

Evaluation of Systems’ Irregularity and Complexity: Sample Entropy, Its Derivatives, and Their Applications across Scales and Disciplines

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ISBN: 9783038973324 9783038973331 Year: Pages: 264 DOI: 10.3390/books978-3-03897-333-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering
Added to DOAB on : 2018-12-10 11:20:37
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ca. 200 words; this text will present the book in all promotional forms (e.g. flyers). Please describe the book in straightforward and consumer-friendly terms.[enter Summary/Description]Based on information theory, a number of entropy measures have been proposed since the 1990s to assess systems’ irregularity, such as approximate entropy, sample entropy, permutation entropy, intrinsic mode entropy, and dispersion entropy, to cite only a few. Among them, sample entropy has been used in a very large variety of disciplines for both univariate and multivariate data. However, improvements to the sample entropy algorithm are still being proposed because sample entropy is unstable for short time series, may be sensitive to parameter values, and can be too time-consuming for long data. At the same time, it is worth noting that sample entropy does not take into account the multiple temporal scales inherent in complex systems. It is maximized for completely random processes and is used only to quantify the irregularity of signals on a single scale. This is why analyses of irregularity—with sample entropy or its derivatives—at multiple time scales have been proposed to assess systems’ complexity. This Book presents contributions related to new and original research based on the use of sample entropy or its derivatives.

Mountain, Water, Rock, God

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ISBN: 9780520970151 9780520298026 Year: Pages: 280 DOI: 10.1525/luminos.61 Language: English
Publisher: University of California Press
Subject: Environmental Sciences --- Religion --- History
Added to DOAB on : 2019-01-15 13:33:11
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In Mountain, Water, Rock, God, Luke Whitmore situates the disastrous flooding that fell on the Hindu Himalayan shrine of Kedarnath in 2013 within its broader religious and ecological contexts. For centuries, the enmeshing of Shiva with the Himalayan environment has animated how Hindus conceptualize and experience Kedarnath. The floods publicly affirmed the fundamentally Himalayan and Shiva-oriented character of this place. At the same time, the floods made it clear that the patterns of commercialization, development, and regulation of recent decades in Uttarakhand, patterns that arose in response to new statehood and an influx of middle-class pilgrims and tourists, were starkly out of place. People connected to Kedarnath today therefore understand both the floods and the recent short-sighted development that multiplied the impact of the floods both as the natural consequence of human fault and as an indication of a growing disconnect with the Himalayan environment and its resident divine powers. Whitmore explores the longer story of this powerful realm of Shiva through a holistic theoretical perspective that integrates phenomenological and systems-based approaches to the study of religion, pilgrimage, place, and ecology by thinking about Kedarnath as a place that is experienced as an ecosocial system characterized by complexity. He argues that close attention to places of religious significance offers a portable theoretical model for thinking through connections between ritual, narrative, climate change, tourism, religion, development, and disaster, and shows how these critical components of human life in the twenty-first century intersect in the human experience of place.

Keywords

place --- Kedarnath --- Shiva --- ecology --- development --- disaster --- complexity --- pilgrimage --- tourism --- Hindu --- phenomenology --- Himalaya

Leading Change in a Complex World

Authors: --- --- --- --- et al.
ISBN: 9789520308452 Year: Pages: 365 Language: English
Publisher: Tampere University Press
Subject: Business and Management
Added to DOAB on : 2019-02-06 08:17:53
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Leading Change in a Complex World : Transdisciplinary Perspectives is a transdisciplinary book offering tools for leaders, analysts and students of leadership to navigate in complex and interconnected settings. It proposes an analytical framework based on complexity, relational leadership, and dynamic change. Individual chapters examine these ideas in relation to topical societal, organisational and business challenges such as the changing global security environment, urbanisation, demographic changes, and business-government relations. The leadership roles of heads of states and societal stakeholders are analysed, and versatile leadership and management practices from conflict management to evaluation are introduced. The possibilities for change are examined through global megatrends, shifting global power blocs, changes in consumer practices, as well as those emanating from abstract concepts such as the circular economy.

Second Generation General System Theory: Perspectives in Philosophy and Approaches in Complex Systems

Authors: --- ---
ISBN: 9783038424413 9783038424406 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mathematics
Added to DOAB on : 2017-06-29 11:01:38
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Following the classical work of Norbert Wiener, Ross Ashby, Ludwig von Bertalanffy and many others, the concept of System has been elaborated in different disciplinary fields, allowing interdisciplinary approaches in areas such as Physics, Biology, Chemistry, Cognitive Science, Economics, Engineering, Social Sciences, Mathematics, Medicine, Artificial Intelligence, and Philosophy. The new challenge of Complexity and Emergence has made the concept of System even more relevant to the study of problems with high contextuality. This Special Issue focuses on the nature of new problems arising from the study and modelling of complexity, their eventual common aspects, properties and approaches—already partially considered by different disciplines—as well as focusing on new, possibly unitary, theoretical frameworks. This Special Issue aims to introduce fresh impetus into systems research when the possible detection and correction of mistakes require the development of new knowledge. This book contains contributions presenting new approaches and results, problems and proposals. The context is an interdisciplinary framework dealing, in order, with electronic engineering problems; the problem of the observer; transdisciplinarity; problems of organised complexity; theoretical incompleteness; design of digital systems in a user-centred way; reaction networks as a framework for systems modelling; emergence of a stable system in reaction networks; emergence at the fundamental systems level; behavioural realization of memoryless functions.

Exact and Heuristic Scheduling Algorithms

Authors: --- ---
ISBN: 9783039284689 9783039284696 Year: Pages: 200 DOI: 10.3390/books978-3-03928-469-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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This edited book presents new results in the area of the development of exact and heuristic scheduling algorithms. It contains eight articles accepted for publication for a Special Issue in the journal Algorithms. The book presents new algorithms, e.g., for flow shop, job shop, and parallel machine scheduling problems. The particular articles address subjects such as a heuristic for the routing and scheduling problem with time windows, applied to the automotive industry in Mexico, a heuristic for the blocking job shop problem with tardiness minimization based on new neighborhood structures, fast heuristics for the Euclidean traveling salesman problem or a new mathematical model for the period-aggregated resource leveling problem with variable job duration, and several others.

Symmetry Measures on Complex Networks

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ISBN: 9783038424987 9783038424994 Year: Pages: 510 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mathematics
Added to DOAB on : 2017-10-02 11:56:21
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Symmetry is found everywhere, to a greater or lesser degree. It is essential in all sciences and also as the basic substrate in all arts. The same happens with Complex Networks, which are the majority of all those that interest for advanced knowledge, that is, for research. That is why these two themes have been unified here, whose intersection we are dealing with: in its first part, of fundamentals, and in its second part of applications, which are multiple in the world today.

Algorithms for Scheduling Problems

Authors: --- ---
ISBN: 9783038971191 9783038971207 Year: Pages: XIV, 194 Language: Englisch
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Computer Science --- Mathematics
Added to DOAB on : 2018-08-24 16:46:30
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This edited book presents new results in the area of algorithm development for different types of scheduling problems. In eleven chapters, algorithms for single machine problems, flow-shop and job-shop scheduling problems (including their hybrid (flexible) variants), the resource-constrained project scheduling problem, scheduling problems in complex manufacturing systems and supply chains, and workflow scheduling problems are given. The chapters address such subjects as insertion heuristics for energy-efficient scheduling, the re-scheduling of train traffic in real time, control algorithms for short-term scheduling in manufacturing systems, bi-objective optimization of tortilla production, scheduling problems with uncertain (interval) processing times, workflow scheduling for digital signal processor (DSP) clusters, and many more.

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