Results 11 to 20 of about 15,720,626 (306)

Predicting system dynamics of pervasive growth patterns in complex systems [PDF]

open access: yesScientific Reports
Predicting dynamic behaviors is one of the goals of science in general as well as essential to many specific applications of human knowledge to real world systems.
Leila Hedayatifar   +10 more
doaj   +2 more sources

Persistence in complex systems

open access: yesPhysics Reports, 2022
Persistence is an important characteristic of many complex systems in nature, related to how long the system remains at a certain state before changing to a different one. The study of complex systems' persistence involves different definitions and uses different techniques, depending on whether short-term or long-term persistence is considered.
Maria Piles   +2 more
exaly   +6 more sources

A conceptual system design and managerial complexity competency model [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Complex adaptive systems are usually difficult to design and control.
Amaechi, Austin Oguejiofor
core   +7 more sources

The growing amplification of social media: measuring temporal and social contagion dynamics for over 150 languages on Twitter for 2009–2020

open access: yesEPJ Data Science, 2021
Working from a dataset of 118 billion messages running from the start of 2009 to the end of 2019, we identify and explore the relative daily use of over 150 languages on Twitter.
Thayer Alshaabi   +6 more
doaj   +1 more source

Tools to characterize the correlated nature of collective dynamics [PDF]

open access: yes, 2021
Synchronization, which occurs for both chaotic and nonchaotic sys-tems, is a striking phenomenon with many practical implications for natural phenomena and technological applications.
Vilela Mendes, R., Aguirre Maeso, Carlos
core   +1 more source

Ecological and Coevolutionary Dynamics in Modern Markets Yield Nonstationarity in Market Efficiencies

open access: yesComplexity, 2022
The U.S. stock market is one of the largest and most complex marketplaces in the global financial system. Over the past several decades, this market has evolved at multiple structural and temporal scales.
Colin M. Van Oort   +4 more
doaj   +1 more source

Do evolutionary algorithm dynamics create complex network structures? [PDF]

open access: yes, 2021
This paper presents a novel method for visualizing the dynamics of evolutionary algorithms in the form of complex networks. We discuss the analogy between individuals in populations in an arbitrary evolutionary algorithm and vertices of a complex network,
Jašek, Roman   +3 more
core   +1 more source

Modeling Complex Systems: A Case Study of Compartmental Models in Epidemiology

open access: yesComplexity, 2022
Compartmental epidemic models have been widely used for predicting the course of epidemics, from estimating the basic reproduction number to guiding intervention policies.
Alexander F. Siegenfeld   +2 more
doaj   +1 more source

Kernel-based online learning for real-time voltage control in distribution networks

open access: yesIET Smart Grid, 2020
This paper presents a new data-driven voltage control approach for distribution networks based on kernel methods. Voltage control becomes more and more challenging due to the increased penetration of Distributed Generation (DG), bidirectional power flow ...
Lisette Cupelli   +4 more
doaj   +1 more source

Identification of mutations in SARS-CoV-2 PCR primer regions

open access: yesScientific Reports, 2022
Due to the constantly increasing number of mutations in the SARS-CoV-2 genome, concerns have emerged over the possibility of decreased diagnostic accuracy of reverse transcription-polymerase chain reaction (RT-PCR), the gold standard diagnostic test for ...
Anikó Mentes   +7 more
doaj   +1 more source

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