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70,277 Results Found

  • Article
  • Open Access
2 Citations
4,172 Views
17 Pages

A significant increase in System-of-Systems (SoS) is currently observed in the social and technical domains. As a result of the increasing number of constituent system components, Systems of Systems are becoming larger and more complex. Recent resear...

  • Article
  • Open Access
1 Citations
7,626 Views
19 Pages

15 January 2013

The main aim of this paper is to show how the design and creation of computational models to study and simulate of the behaviour of dynamical complex systems, and in particular crowds of pedestrian, actually implicitly employs elements of a framework...

  • Article
  • Open Access
19 Citations
8,949 Views
11 Pages

Action on the Sustainable Development Goals (SDGs) needs to become real and impactful, taking a “whole systems” perspective on levers for systems change. This article reviews what we have learned over the past century about the large-scal...

(This article belongs to the Section Global Health)
  • Editorial
  • Open Access
4 Citations
5,284 Views
3 Pages

Nonadditive Entropies and Complex Systems

  • Andrea Rapisarda,
  • Stefan Thurner and
  • Constantino Tsallis

27 May 2019

An entropic functional S is said additive if it satisfies, for any two probabilistically independent systems A and B, that S ( A + B ) = S ( A ) + S ( B ) [...]

(This article belongs to the Special Issue Nonadditive Entropies and Complex Systems)
  • Editorial
  • Open Access
3 Citations
2,794 Views
2 Pages

Symmetry in Complex Systems

  • António M. Lopes and
  • José A. Tenreiro Machado

8 June 2020

Complex systems with symmetry arise in many fields, at various length scales, including financial markets, social, transportation, telecommunication and power grid networks, world and country economies, ecosystems, molecular dynamics, immunology, liv...

(This article belongs to the Special Issue Symmetry in Complex Systems)
  • Article
  • Open Access
2 Citations
647 Views
28 Pages

17 July 2026

Geometry is typically treated as a primitive background structure within which physical processes unfold. In this work, we investigate an alternative possibility: that geometry can arise as a structural consequence of relational dynamics. We study th...

(This article belongs to the Section Mathematical Physics)
  • Article
  • Open Access
2 Citations
7,542 Views
24 Pages

Development of Perceived Complex Problem-Solving Instrument in Domain of Complex Systems

  • Morteza Nagahi,
  • Alieh Maddah,
  • Raed Jaradat and
  • Mohammad Mohammadi

The ability to solve modern complex systems becomes a necessity of the 21st century. The purpose of this study is the development of an instrument that measures an individual’s perception toward solving complex problems. Based on literature and defin...

(This article belongs to the Section Complex Systems and Cybernetics)
  • Article
  • Open Access
24 Citations
6,232 Views
19 Pages

24 July 2015

Based on two fractional-order chaotic complex drive systems and one fractional-order chaotic complex response system with different dimensions, we propose generalized combination complex synchronization. In this new synchronization scheme, there are...

(This article belongs to the Special Issue Recent Advances in Chaos Theory and Complex Networks)
  • Article
  • Open Access
6 Citations
2,407 Views
14 Pages

Adaptive Flexibility of the City’s Complex Systems

  • Sara Abdul Aalie Rasheed,
  • Wahda Shuker Al-Hinkawi and
  • Mohammed Fareed Sherzad

The city represents a complex adaptive system consisting of a set of interconnected subsystems within self-organization and flexible structures that give it the ability to adapt to continue operating over time. This research discusses the adaptive fl...

(This article belongs to the Special Issue Advanced Studies in Urban and Regional Planning)
  • Review
  • Open Access
4 Citations
8,301 Views
18 Pages

Defining a complex system and evaluating its complexity typically requires an interdisciplinary approach, integrating information theory, signal processing techniques, principles of dynamical systems, algorithm length analysis, and network science. T...

  • Article
  • Open Access
25 Citations
4,908 Views
22 Pages

16 October 2020

The strategic design of organizations in an environment where complexity is constantly increasing, as in the cyber-physical systems typical of Industry 4.0, is a process full of uncertainties. Leaders are forced to make decisions that affect other or...

(This article belongs to the Special Issue JIDOKA. Integration of Human and AI within Industry 4.0 Cyber Physical Manufacturing Systems)
  • Article
  • Open Access
28 Citations
20,142 Views
18 Pages

Defining Complex Adaptive Systems: An Algorithmic Approach

  • Muhammad Ayyaz Ahmad,
  • George Baryannis and
  • Richard Hill

30 January 2024

Despite a profusion of literature on complex adaptive system (CAS) definitions, it is still challenging to definitely answer whether a given system is or is not a CAS. The challenge generally lies in deciding where the boundaries lie between a comple...

  • Article
  • Open Access
1 Citations
2,566 Views
14 Pages

8 August 2022

Since the product of complex numbers and rectangular fuzzy complex numbers (RFCN) is not necessarily a RFCN in the former fuzzy complex linear system (FCLS), the scalar multiplication and addition operations of complex numbers and fuzzy complex numbe...

(This article belongs to the Special Issue Fuzzy Group Decision Making)
  • Article
  • Open Access
128 Citations
29,458 Views
16 Pages

Ecological Systems as Complex Systems: Challenges for an Emerging Science

  • Madhur Anand,
  • Andrew Gonzalez,
  • Frédéric Guichard,
  • Jurek Kolasa and
  • Lael Parrott

15 March 2010

Complex systems science has contributed to our understanding of ecology in important areas such as food webs, patch dynamics and population fluctuations. This has been achieved through the use of simple measures that can capture the difference betwee...

(This article belongs to the Special Issue Diversity Theories and Perspectives)
  • Review
  • Open Access
11 Citations
7,835 Views
18 Pages

Resilience in Complex Catchment Systems

  • Lindsay Beevers,
  • Melissa Bedinger,
  • Kerri McClymont and
  • Annie Visser-Quinn

20 February 2021

In this paper, we explore how we can use catchment resilience as a unifying concept to manage and regulate catchments, using structured reviews to support our perspective. Catchments are complex systems with interrelated natural, social, and technica...

(This article belongs to the Section Hydrology)
  • Editorial
  • Open Access
10 Citations
4,239 Views
5 Pages

19 October 2020

This paper provides an introduction to, and an overview of, the Special Issue on the application of systems approach to the management of complex water systems. The main motivation in proposing this Special Issue was that today, more than ever, we ne...

(This article belongs to the Special Issue Application of the Systems Approach to the Management of Complex Water Systems)
  • Editorial
  • Open Access
4 Citations
3,019 Views
3 Pages

Complex Systems and Fractional Dynamics

  • António M. Lopes and
  • J. A. Tenreiro Machado

3 July 2018

Complex systems (CS) are pervasive in many areas of science and technology, namely in financial

markets, transportation, telecommunication and social networks, world and country economies,

immunological systems, living organisms, computational systems,...

(This article belongs to the Special Issue Complex Systems and Fractional Dynamics)
  • Article
  • Open Access
29 Citations
13,146 Views
25 Pages

4 February 2000

The formation of complex systems is accompanied by the emergence of properties that are non-existent in the components. But what of the properties and behaviour of such components caught up in the formation of a system of a higher level of complexity...

  • Article
  • Open Access
23 Citations
6,253 Views
16 Pages

10 September 2013

In this paper, we investigate the combination synchronization of three nonlinear complex hyperchaotic systems: the complex hyperchaotic Lorenz system, the complex hyperchaotic Chen system and the complex hyperchaotic L¨u system. Based on the Lyapunov...

(This article belongs to the Special Issue Dynamical Systems)
  • Article
  • Open Access
2 Citations
3,410 Views
18 Pages

Parallel Learning of Dynamics in Complex Systems

  • Xueqin Huang,
  • Xianqiang Zhu,
  • Xiang Xu,
  • Qianzhen Zhang and
  • Ailin Liang

15 December 2022

Dynamics always exist in complex systems. Graphs (complex networks) are a mathematical form for describing a complex system abstractly. Dynamics can be learned efficiently from the structure and dynamics state of a graph. Learning the dynamics in gra...

(This article belongs to the Special Issue Data Driven Decision-Making for Complex Production Systems)
  • Feature Paper
  • Review
  • Open Access
127 Citations
24,982 Views
29 Pages

Multi-Agent Systems and Complex Networks: Review and Applications in Systems Engineering

  • Manuel Herrera,
  • Marco Pérez-Hernández,
  • Ajith Kumar Parlikad and
  • Joaquín Izquierdo

8 March 2020

Systems engineering is an ubiquitous discipline of Engineering overlapping industrial, chemical, mechanical, manufacturing, control, software, electrical, and civil engineering. It provides tools for dealing with the complexity and dynamics related t...

(This article belongs to the Special Issue Control and Optimization of Multi-Agent Systems and Complex Networks for Systems Engineering)
  • Editorial
  • Open Access
8 Citations
5,666 Views
10 Pages

23 September 2014

This special issue collects contributions from the participants of the “Information in Dynamical Systems and Complex Systems” workshop, which cover a wide range of important problems and new approaches that lie in the intersection of information theo...

(This article belongs to the Special Issue Information in Dynamical Systems and Complex Systems)
  • Article
  • Open Access
2 Citations
2,362 Views
18 Pages

With the advent of AI- and robot-systems, the current Human–Computer Interaction (HCI) paradigm, which treats interaction as a transactional exchange, is increasingly insufficient for complex socio-technical systems. This paper argues for a shi...

  • Article
  • Open Access
33 Citations
82,246 Views
21 Pages

Effectiveness of Leadership Decision-Making in Complex Systems

  • Leonie Hallo,
  • Tiep Nguyen,
  • Alex Gorod and
  • Phu Tran

12 February 2020

This paper traverses the domains of leadership and decision-making within various types of systems with different levels of complexity. The article presents some background about both leadership and decision-making, and then explores the concept of l...

  • Article
  • Open Access
1 Citations
6,181 Views
11 Pages

Spectral Ranking of Causal Influence in Complex Systems

  • Errol Zalmijn,
  • Tom Heskes and
  • Tom Claassen

20 March 2021

Similar to natural complex systems, such as the Earth’s climate or a living cell, semiconductor lithography systems are characterized by nonlinear dynamics across more than a dozen orders of magnitude in space and time. Thousands of sensors measure r...

  • Article
  • Open Access
2 Citations
3,442 Views
46 Pages

15 April 2026

Wicked problems spanning systemic educational inequities, economic disparities, and environmental sustainability resist most traditional change efforts. This theory-building article advances a systems explanation that introduces complex conceptual sy...

(This article belongs to the Section Systems Practice in Social Science)
  • Review
  • Open Access
139 Citations
14,799 Views
18 Pages

26 February 2021

Deep learning models and graphics processing units have completely transformed the field of machine learning. Recurrent neural networks and long short-term memories have been successfully used to model and predict complex systems. However, these clas...

(This article belongs to the Special Issue Information Geometry, Complexity Measures and Data Analysis)
  • Article
  • Open Access
3 Citations
1,342 Views
10 Pages

Synchronizations in Complex Systems Dynamics Through a Multifractal Procedure

  • Vlad Ghizdovat,
  • Diana Carmen Mirila,
  • Florin Nedeff,
  • Dragos Ioan Rusu and ,
  • Oana Rusu,
  • Maricel Agop and
  • Decebal Vasincu
  • + 2 authors+ 0 author

17 June 2025

The dynamics of complex systems often exhibit multifractal properties, where interactions across different scales influence their evolution. In this study, we apply the Multifractal Theory of Motion within the framework of scale relativity theory to...

(This article belongs to the Special Issue Nonlinear Dynamics of Complex Systems)
  • Perspective
  • Open Access
2 Citations
1,822 Views
18 Pages

We detail a procedure to transform the current empirical stage in the study of complex systems into a predictive phenomenological one. Our approach starts with the statistical-mechanical Landau-Ginzburg equation for dissipative processes, such as kin...

  • Article
  • Open Access
1 Citations
3,088 Views
17 Pages

27 October 2023

Complex networks is a growing discipline aimed at understanding large interacting systems. One of its goals is to establish a relation between the interactions of a system and the networks structure that emerges. Taking a Lennard-Jones particle syste...

(This article belongs to the Special Issue Entropy, Time and Evolution II)
  • Article
  • Open Access
6 Citations
2,428 Views
11 Pages

28 May 2023

In this paper, we primarily investigate the methodology for the hybrid complex projective synchronization (HCPS) scheme in non-identical complex fractional order chaotic systems via an active complex synchronization technique (ACST). Appropriate cont...

(This article belongs to the Section Mathematical Analysis)
  • Communication
  • Open Access
1 Citations
6,494 Views
5 Pages

Foreground and Background Components in Separable Complex Systems

  • Mihir Sen,
  • Juan Carlos Jáuregui-Correa and
  • Carlos S. López-Cajún

19 July 2016

Complex systems are composed of a large number of individual components. Many of these systems are separable, i.e., they can be split into two coupled subsystems: one with foreground components and another with background components. The former leads...

  • Article
  • Open Access
3 Citations
3,127 Views
27 Pages

On the Integration of Complex Systems Engineering and Industry 4.0 Technologies for the Conceptual Design of Robotic Systems

  • Jaime Alonso Restrepo-Carmona,
  • Elkin A. Taborda,
  • Esteban Paniagua-García,
  • Carlos A. Escobar and ,
  • Julián Sierra-Pérez and
  • Rafael E. Vásquez
  • + 1 author+ 0 author

6 September 2024

This paper presents a novel integration of Systems Engineering (SE) methodologies and Industry 4.0 (I4.0) technologies in the design of robotic systems, focusing on enhancing underwater robotic missions. Using the conceptual design of an underwater e...

(This article belongs to the Special Issue Design Methods for Mechanical and Industrial Innovation)
  • Article
  • Open Access
16 Citations
6,710 Views
18 Pages

Challenges in changing school system functioning to orient them towards health are commonly underestimated. Understanding the social interactions of school staff from a complex systems perspective may provide valuable insight into how system dynamics...

(This article belongs to the Special Issue Complex Interventions for Public Health Improvement)
  • Article
  • Open Access
10 Citations
4,216 Views
12 Pages

10 May 2019

By designing a state observer, a new type of synchronization named complex modified projective synchronization is investigated in a class of nonlinear fractional-order complex chaotic systems. Combining stability results of the fractional-order syste...

(This article belongs to the Section Complexity)
  • Review
  • Open Access
168 Views
43 Pages

Multifractal analysis has evolved from a formalism for heterogeneous scaling into a broader framework for investigating structure, dynamics, representation, computation, and learning systems. This critical integrative review synthesizes methodologica...

(This article belongs to the Special Issue Multifractal Analysis and Complex Systems)
  • Article
  • Open Access
16 Citations
6,265 Views
18 Pages

Symplectic Entropy as a Novel Measure for Complex Systems

  • Min Lei,
  • Guang Meng,
  • Wenming Zhang,
  • Joshua Wade and
  • Nilanjan Sarkar

17 November 2016

Real systems are often complex, nonlinear, and noisy in various fields, including mathematics, natural science, and social science. We present the symplectic entropy (SymEn) measure as well as an analysis method based on SymEn to estimate the nonline...

(This article belongs to the Section Complexity)
  • Article
  • Open Access
23 Citations
8,427 Views
22 Pages

29 November 2016

A characteristic feature of complex systems is their deep structure, meaning that the definition of their states and observables depends on the level, or the scale, at which the system is considered. This scale dependence is reflected in the distinct...

(This article belongs to the Special Issue Information and Self-Organization)
  • Systematic Review
  • Open Access
19 Citations
13,983 Views
23 Pages

A Review of Technological Forecasting from the Perspective of Complex Systems

  • Lijie Feng,
  • Qinghua Wang,
  • Jinfeng Wang and
  • Kuo-Yi Lin

4 June 2022

Technology forecasting (TF) is an important way to address technological innovation in fast-changing market environments and enhance the competitiveness of organizations in dynamic and complex environments. However, few studies have investigated the...

(This article belongs to the Special Issue Statistical Methods for Complex Systems)
  • Article
  • Open Access
6 Citations
3,430 Views
14 Pages

21 October 2024

What does it mean for a complex system to “compute” or perform “computations”? Intuitively, we can understand complex “computation” as occurring when a system’s state is a function of multiple inputs (potenti...

(This article belongs to the Special Issue Causality and Complex Systems)
  • Review
  • Open Access
167 Citations
25,854 Views
90 Pages

1 October 2014

In this review I show that four major kinds of theoretical approaches have been used to explain the scaling of metabolic rate in cells, organisms and groups of organisms in relation to system size. They include models focusing on surface-area related...

(This article belongs to the Special Issue Allometric Scaling)
  • Review
  • Open Access
7 Citations
4,751 Views
13 Pages

20 January 2019

Information is the fundamental currency of naturally occurring complex adaptive systems, whether they are individual organisms or collective social insect colonies. Information appears to be more important than energy in determining the behavior of t...

(This article belongs to the Special Issue Information Theory in Complex Systems)
  • Review
  • Open Access
28 Citations
5,809 Views
39 Pages

Understanding the Role of Sensor Optimisation in Complex Systems

  • Burak Suslu,
  • Fakhre Ali and
  • Ian K. Jennions

12 September 2023

Complex systems involve monitoring, assessing, and predicting the health of various systems within an integrated vehicle health management (IVHM) system or a larger system. Health management applications rely on sensors that generate useful informati...

(This article belongs to the Section Intelligent Sensors)
  • Article
  • Open Access
1 Citations
1,560 Views
11 Pages

20 December 2024

In this contribution, we generalize existing methods for decentralized control design, providing a unified methodological framework that applies to linear continuous and discrete-time complex systems, as well as certain classes of nonlinear complex s...

  • Article
  • Open Access
458 Views
19 Pages

This paper proposes an entropy–topological method for the analysis of multicomponent complex systems that accounts for the relative incompatibility of system parameters, in particular physical, chemical, and other mechanisms, with configuration...

  • Review
  • Open Access
48 Citations
12,519 Views
23 Pages

25 July 2016

The development of engineered systems for energy dissipation (or absorption) during impacts or vibrations is an increasing need in our society, mainly for human protection applications, but also for ensuring the right performance of different sort of...

(This article belongs to the Special Issue Applications of Complex Fluids)
  • Article
  • Open Access
1 Citations
7,873 Views
12 Pages

1 December 2001

The cardinality of the class, C , of complex intelligent systems, i.e., systems of intelligent systems and their resources, is steadily increasing. Such an increase, whether designed, sometimes changes significantly and fundamentally, the structure o...

  • Article
  • Open Access
12 Citations
2,114 Views
20 Pages

In this contribution, a methodology for the optimal tuning of controllers of complex systems based on meta–heuristic techniques is proposed. Two bio-inspired meta-heuristic optimization algorithms –the Antlion Optimizer (ALO) and the Whal...

  • Article
  • Open Access
4 Citations
3,562 Views
30 Pages

27 September 2024

The analysis of complex system reliability is an area of growing interest, particularly given the diverse and intricate nature of the subsystems and components these systems encompass. Tackling the reliability of such multifaceted systems presents ch...

(This article belongs to the Section E2: Control Theory and Mechanics)
  • Article
  • Open Access
28 Citations
18,136 Views
11 Pages

The Nursing Theory of Complex Adaptive Systems: A New Paradigm for Nursing

  • Ippolito Notarnicola,
  • Marzia Lommi,
  • Dhurata Ivziku,
  • Sara Carrodano and ,
  • Gennaro Rocco and
  • Alessandro Stievano
  • + 1 author+ 0 author

6 October 2024

Background/Objectives: This article explores the theoretical and practical implications of the meaning of thinking, living, and acting within the framework of nursing in Complex Adaptive Systems. The Nursing Theory of Complex Adaptive Systems is grou...

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