Fragile Networks

Fragile Networks

Author: Anna Nagurney

Publisher: John Wiley & Sons

Published: 2009-08-17

Total Pages: 344

ISBN-13: 9780470501122

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A unified treatment of the vulnerabilities that exist in real-world network systems—with tools to identify synergies for mergers and acquisitions Fragile Networks: Identifying Vulnerabilities and Synergies in an Uncertain World presents a comprehensive study of network systems and the roles these systems play in our everyday lives. This book successfully conceptualizes, defines, and constructs mathematically rigorous, computer-based tools for the assessment of network performance and efficiency, along with robustness and vulnerability analysis. The result is a thorough exploration that promotes an understanding of the critical infrastructure of today's network systems, from congested urban transportation networks and supply chain networks under disruption to financial networks and the Internet. The authors approach the analyses by abstracting not only topological structures of networks, but also the behavior of network users, the demand for resources, the resulting flows, and the associated costs. Following an introduction to the fundamental methodologies and tools required for network analysis and network vulnerability, the book is organized into three self-contained parts: Part I—Network Fundamentals, Efficiency Measurement, and Vulnerability Analysis explores the theoretical and practical foundations for a new network efficiency measure in order to assess the importance of network components in various network systems. Methodologies for distinct decision-making behaviors are outlined, along with the tools for qualitative analysis, the algorithms for the computation of solutions, and a thorough discussion of the unified network efficient measure and network robustness with the unified measure. Part II—Applications and Extensions examines the efficiency changes and the associated cost increments after network components are eliminated or partially damaged. A discussion of the recently established connections between transportation networks and different critical networks is provided, which demonstrates how the new network measures and robustness indices can be applied to different supply chain, financial, and dynamic networks, including the Internet and electronic power networks. Part III—Mergers and Acquisitions, Network Integration, and Synergies reveals the connections between transportation networks and different network systems and quantifies the synergies associated with the network systems, from total cost reduction to environmental impact assessment. In the case of mergers and acquisitions, the focus is on supply chain networks. The authors outline a system-optimization perspective for supply chain networks and also formalize coalition formation using game theory with insights into the merger paradox. With its numerous network examples and real-world applications, Fragile Networks: Identifying Vulnerabilities and Synergies in an Uncertain World is an excellent book for courses in network science, transportation science, operations management, and financial networks at the upper-undergraduate and graduate levels. It is also a valuable reference for researchers and practitioners in the areas of applied mathematics, computer science, operations research, management science, finance, and economics, as well as industrial, systems, and civil engineering. Listen to Dr. Nagurney's podcast Supernetworks: Building Better Real and Virtual Highways at http://www.scienceofbetter.org/podcast/ .


Anti-fragile ICT Systems

Anti-fragile ICT Systems

Author: Kjell Jørgen Hole

Publisher: Springer

Published: 2016-03-22

Total Pages: 159

ISBN-13: 3319300709

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This book introduces a novel approach to the design and operation of large ICT systems. It views the technical solutions and their stakeholders as complex adaptive systems and argues that traditional risk analyses cannot predict all future incidents with major impacts. To avoid unacceptable events, it is necessary to establish and operate anti-fragile ICT systems that limit the impact of all incidents, and which learn from small-impact incidents how to function increasingly well in changing environments. The book applies four design principles and one operational principle to achieve anti-fragility for different classes of incidents. It discusses how systems can achieve high availability, prevent malware epidemics, and detect anomalies. Analyses of Netflix’s media streaming solution, Norwegian telecom infrastructures, e-government platforms, and Numenta’s anomaly detection software show that cloud computing is essential to achieving anti-fragility for classes of events with negative impacts.


Land and water governance to achieve the SDGs in fragile systems

Land and water governance to achieve the SDGs in fragile systems

Author: Food and Agriculture Organization of the United Nations

Publisher: Food & Agriculture Org.

Published: 2019-08-15

Total Pages: 66

ISBN-13: 9251315892

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This publication was prepared as a background paper for the Land and Water Days event, held in Cairo, Egypt, from 31 March to 4 April 2019. In the framework of the event, the paper introduced the thematic area on "Land and Water Governance to achieve the SDGs in fragile systems", whose plenary session was held on Wednesday, 3 April 2019. Taking into consideration the fragility of the Near East and North Africa (NENA) region, the paper intends to demonstrate how land and water governance can help to reduce such condition, improve resilience and even assist in conflict resolution in the NENA region.


Conflict and Fragility Fragile States Resource Flows and Trends

Conflict and Fragility Fragile States Resource Flows and Trends

Author: OECD

Publisher: OECD Publishing

Published: 2013-03-04

Total Pages: 111

ISBN-13: 9264190392

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This publication takes stock of i) the evolution of fragility as a concept, ii) analyses of financial flows to and within fragile states between 2000 and 2010, and iii) trends and issues that are likely to shape fragility in the years to come.


Building Anti-Fragile Organisations

Building Anti-Fragile Organisations

Author: Tony Bendell

Publisher: Routledge

Published: 2016-04-22

Total Pages: 268

ISBN-13: 1317171063

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Every day human organisations fail. Building Anti-Fragile Organisations explores a powerful alternative framework for risk in the design and management of human systems. Anti-Fragility is a new way of thinking about mitigating risk that builds on earlier work on the characteristics of biological systems that, being more than just robust, actually improve their resilience through being stressed. Professor Bendell explains how applying this concept to the development and management of organisations, services and products, allows us to identify the characteristics that will not only mitigate against the realisation of hazards, but enable growth in protection, strength and anti-fragility over time. In this context, anti-fragility also encompasses flexibility, agility and the exploitation of opportunities. At the organisational level, anti-fragility (or its absence) is determined by the organisational strategy, structure and systems, its people, relationships and culture. The book focuses on establishing the Anti-Fragile concept of the firm, and explores its application in private and public sector organisations of all types. It identifies characteristics relevant to survival in a turbulent world, and how our approaches to risk and governance need to change in order to create and manage anti-fragile organisations. It provides practical insight into the concept of Anti-Fragility and its deployment within human organisations of all types, and give readers the opportunity to start to make sense to applying the concepts within their own worlds.


SYSTEMIC RISK IN BANKING

SYSTEMIC RISK IN BANKING

Author: Lorenzo Pagliaro

Publisher: American Academic Press

Published: 2020-01-28

Total Pages: 134

ISBN-13: 1631816659

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Shortly after the financial crisis of 2007-2008 many authors began to write about certain “huge institutions” potentially able to damage the entire financial system through negative shocks, approaching the issue of systemic risk in banking through the evaluation of the so called “Too-Big-to-Fail” actors. While the size of a bank is certainly a factor of risk when considering systemic implications, this book also explores the properties of some deeply interconnected institutions. The author’s main intuition is based on the renowned work by Mark Granovetter on “The Strength of Weak Ties” and “Economic Action and Social Structure: The Problem of Embeddedness”: dangerous flows, like financial shocks, may travel very quickly through networks in unexpectedly efficient ways thanks to “Weak Ties”. The existence of weaker yet longer ties implies a naturally “robust yet fragile” network where even distant actors are closely interconnected, sharing both opportunities and risks. As a consequence, some nodes may act as key actors under the structural perspective. It is therefore critical for the central authority to identify and closely monitor said institutions. Thanks to a journey through the history of Social Network Analysis this book offers a complete overview on the evolution of the methodology and the most recent applications to systemic risk assessment, which are completed by a critical approach towards the “Too-Interconnected-to-Fail” perspective.


Dynamic Systems with Time Delays: Stability and Control

Dynamic Systems with Time Delays: Stability and Control

Author: Ju H. Park

Publisher: Springer Nature

Published: 2019-08-29

Total Pages: 351

ISBN-13: 9811392544

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This book presents up-to-date research developments and novel methodologies to solve various stability and control problems of dynamic systems with time delays. First, it provides the new introduction of integral and summation inequalities for stability analysis of nominal time-delay systems in continuous and discrete time domain, and presents corresponding stability conditions for the nominal system and an applicable nonlinear system. Next, it investigates several control problems for dynamic systems with delays including H(infinity) control problem Event-triggered control problems; Dynamic output feedback control problems; Reliable sampled-data control problems. Finally, some application topics covering filtering, state estimation, and synchronization are considered. The book will be a valuable resource and guide for graduate students, scientists, and engineers in the system sciences and control communities.


Handbook of Fragile States

Handbook of Fragile States

Author: David Carment

Publisher: Edward Elgar Publishing

Published: 2023-08-14

Total Pages: 431

ISBN-13: 1800883471

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This timely Handbook examines the causes, costs and consequences of state fragility, advancing key debates in the field. Demonstrating the multidimensionality of fragility by applying diverse theories and methodologies, it provides new insights on effective policy development and application in the context of fragile states.