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        <title>Frontiers in Complex Systems | Multi- and Cross-Disciplinary Complexity section | New and Recent Articles</title>
        <link>https://www.frontiersin.org/journals/complex-systems/sections/multi--and-cross-disciplinary-complexity</link>
        <description>RSS Feed for Multi- and Cross-Disciplinary Complexity section in the Frontiers in Complex Systems journal | New and Recent Articles</description>
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        <pubDate>2026-05-06T09:27:01.397+00:00</pubDate>
        <ttl>60</ttl>
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        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1749741</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1749741</link>
        <title><![CDATA[Deliberative project design for understanding and working within complexity in agricultural systems]]></title>
        <pubdate>2026-04-21T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Hanabeth Luke</author><author>Catherine Allan</author><author>Penny Cooke</author><author>Sarina Kilham</author><author>Alison Ollerenshaw</author><author>Nathan Craig</author><author>Naomi Scholz</author><author>Diana Fear</author><author>Simon Kruger</author><author>Joshua Telfer</author><author>Mathew Alexanderson</author><author>David Davenport</author><author>Yvonne Haigh</author><author>Shae Brown</author><author>Kelly Angel</author>
        <description><![CDATA[New innovations have the potential to improve agricultural resilience, profitability, sustainability and regenerative potential. However, new technologies and approaches emerge in a complex sociocultural context, with farmer decisions based on a range of interacting social, economic and environmental factors. Traditional approaches to research and development within agri-food systems often assume continuity and/or linearity in change processes, which is rarely the case in practice. There are calls for approaches and methods to research and development that can apply deliberative and participatory processes to enable social learning and innovation while embracing inherent complexities. Through a reflection process relating to two multi-stakeholder, collaborative, soils-focused agri-food research projects in Australia, this paper explores how agricultural research projects can navigate and work with complexity. The first project is a national Rural Landholder Social Benchmarking Study, aimed at collecting and drawing together complex data on farmer decision-making around adoption of innovations; and the second is a Knowledge-Sharing Project aimed at improving farmer engagement in new technologies and innovation across Australian farming regions. Our reflective analysis, based on exploring how complexity principles are enacted in these two projects, illustrates how projects can be developed along self-organising principles, developing team capacity to continually learn together and respond to the unexpected. Considering the complex elements of these projects, and how they have operated, opens a pathway for deliberative design that embraces complexity, which may assist the agricultural sector in the development of future research and project management.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1800101</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1800101</link>
        <title><![CDATA[Decentralized coordination of autonomous agents in the Compute Continuum using consensus]]></title>
        <pubdate>2026-04-14T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Xavier Casas-Moreno</author><author>Komal Thareja</author><author>Pablo de Juan Vela</author><author>Rajiv Mayani</author><author>Josep Fanals-i-Batllori</author><author>Anirban Mandal</author><author>Ewa Deelman</author><author>Rosa M. Badia</author><author>Francesc Lordan</author>
        <description><![CDATA[The Compute Continuum—spanning IoT, Edge, Cloud, and HPC resources—is reshaping how hyper-distributed applications are designed and orchestrated. Traditional service orchestrators and workload management systems rely on centralized runtimes; however, the emerging paradigm requires decentralized coordination, where autonomous agents cooperate to achieve common goals and dynamically distribute workloads. Consensus algorithms play a crucial role in multi-agent systems (MAS), as they enable agents to reach agreement on how to coordinate and execute functionalities in a cooperative manner. While consensus has previously been applied to distributed job selection, here we extend its use to swarm environments. In this setting, agents autonomously decide which service functionalities (i.e., roles) to execute based on their capabilities and the real-time quality of service (QoS). Functionalities can be elastically activated or terminated as application needs evolve. To support this model, we leverage the COLMENA framework, a programming environment for defining and managing such dynamic services. We apply a greedy consensus-based approach to modern power systems, which are increasingly decentralized due to the large-scale integration of renewable energy sources. Centralized power plants are giving way to distributed, intermittent resources that require decentralized control paradigms. To demonstrate this, we simulate the Northeastern Power Coordinating Council’s (NPCC) 140-bus grid using the ANDES simulator in conjunction with the COLMENA middleware. We deploy this use case across six different sites in the FABRIC testbed, using up to 60 different nodes. Our results show that, under contingency scenarios such as load and generator disconnections, agents self-organize, elect local leaders, and execute optimization algorithms to stabilize grid frequency. Detection and organization times remain below 10s across all experiments, even as the number of agents per area scales from 3 to 10. Stability is restored within approximately 27s and 40s for the respective cases. Resource overhead is minimal, with CPU and memory usage remaining below 7.5% and 2%, respectively. Experiment automation and reproducibility are ensured through Kiso. These findings indicate that role-based programming models complement traditional workflows and that consensus-driven coordination can effectively decentralize decision-making in swarm environments. This approach represents a step toward enabling resilient, decentralized power systems.]]></description>
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        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1724679</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1724679</link>
        <title><![CDATA[Deployment of transatlantic computational testbeds via the infrastructure manager]]></title>
        <pubdate>2026-02-17T00:00:00Z</pubdate>
        <category>Brief Research Report</category>
        <author>Germán Moltó</author><author>Miguel Caballer</author><author>Estíbaliz Parcero</author><author>Vicente Rodríguez</author>
        <description><![CDATA[Transatlantic scientific collaborations require computational testbeds that can be provisioned on demand and reconfigured rapidly while spanning institutions in different regulatory and operational domains. During the DISCOVER-US exchange program, we integrated the Infrastructure Manager (IM), a TOSCA-based orchestrator for the computing continuum, with the Chameleon cloud infrastructure. The workflow combined federated identity management, delegated project administration, and an IM plugin that targets Chameleon’s OpenStack endpoints through application credentials. We validated the approach by deploying single virtual machines, a production-ready Galaxy environment, distributed OSCAR-based serverless clusters that offload an AI-based fish detection pipeline, a workflow for flood impact modeling, and a hybrid SLURM cluster. Transatlantic computational testbeds included dynamically provisioned computational resources from EGI Federated Cloud and Chameleon. The study also documents operational constraints encountered with lease automation, bare-metal introspection, and the exposure of Kubernetes services across wide-area networks. The resulting blueprint demonstrates a reproducible path to deploy secure, elastic, and scientifically useful transatlantic computational testbeds.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1794474</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2026.1794474</link>
        <title><![CDATA[Editorial: Game theory and evolutionary dynamics: unraveling complex systems]]></title>
        <pubdate>2026-02-13T00:00:00Z</pubdate>
        <category>Editorial</category>
        <author>Chengyi Tu</author><author>Hongzhong Deng</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1666594</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1666594</link>
        <title><![CDATA[Modified training drills in improving the dribbling agility of futsal athletes]]></title>
        <pubdate>2025-09-15T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Ma. Jan Donna G. Marcojos</author><author>Mylene P. Labastida</author><author>Jade Rona S. Soriano</author><author>Jennifer Degracia</author><author>Marinila T. Urboda</author><author>Louie P. Gula</author>
        <description><![CDATA[IntroductionFutsal has become increasingly popular over the years; hence, studies focusing on the integration of drills to improve the performance of athletes are relevant. This study investigates the impact of modified training drills in improving the dribbling agility of futsal athletes.MethodsA total of 13 athletes participated in the research. Their dribbling agility was classified based on the Test of Agility in Dribbling before and after the training duration. The training program, which follows the FITT principle, consisted of three sessions per week (following a TThS schedule) for 2 weeks, adapting their normal training days. Descriptive statistics (frequency counts, percentages, mean, and standard deviation) summarized the demographic characteristics and agility levels. A Wilcoxon signed-rank test was utilized to determine the significant difference between the pre-test and post-test results, as the participants were not randomly sampled. A Spearman's rank correlation test was used to test the association of demographic profiles with the levels of dribbling agility.ResultsDemographic analysis revealed that most participants were 14 years old, with a majority having a height between 140-149 cm and a weight of 40-49 kg. Descriptive statistics showed a significant improvement in agility performance, as the average agility time decreased from 24.51 s in the pre-test to 20.50 s in the post-test. After training, the participants’ dribbling agility levels shifted from predominantly ‘poor’ classifications to ‘average’, ‘good’, and ‘excellent’. Statistical analysis confirmed that this difference was statistically significant (p < 0.05). Further analysis revealed that weight has a significant association with agility performance, while age and height did not.DiscussionThe results support the hypothesis that modified training drills positively impact agility. The findings suggest that weight can be considered an important factor in evaluating the impact of agility training.ConclusionThe modified agility training program effectively enhanced dribbling agility among futsal athletes. The study suggests that future researchers may extend the training duration and control external factors. It is also recommended that weight be considered in planning and evaluating agility training programs.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1609467</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1609467</link>
        <title><![CDATA[Fragility in human progress. A perspective on governance, technology and societal resilience]]></title>
        <pubdate>2025-09-10T00:00:00Z</pubdate>
        <category>Opinion</category>
        <author>G.-Fivos Sargentis</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1617092</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1617092</link>
        <title><![CDATA[Unsettling the settled: simple musings on the complex climatic system]]></title>
        <pubdate>2025-08-12T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Demetris Koutsoyiannis</author><author>George Tsakalias</author>
        <description><![CDATA[Our revisit of fundamental issues of climate challenges the notion and term of the “greenhouse effect”, and attempts a scientific reevaluation using minimal assumptions, such as Newton’s laws, maximum entropy and gas spectroscopy. It replaces terms like “greenhouse gas” with “radiatively active gas” (RAG) and “greenhouse effect” with “atmospheric radiative effect” (ARE). While ARE exists in several planets’ atmospheres, on Earth it is primarily driven by water vapor and clouds, with CO2 playing a minor role (especially anthropogenic CO2 which represents 4% of total emissions). Equilibrium thermodynamics, via entropy maximization or molecular collision simulation, leads to an isothermal atmosphere at about 250 K (the average temperature of the troposphere and stratosphere) irrespective of RAG presence or not. It is the troposphere’s 6.5 K/km temperature gradient (lapse rate), partly shaped by moist adiabatic processes, that drives the atmosphere away from this equilibrium and warms the surface to about 288 K on average, with ARE (mainly water vapor and clouds) contributing to the warming, but only when this gradient exists. The temperature gradient varies spatially and temporally and, since 1950, has weakened in the tropics and grown in the polar areas, resulting in a decrease of the surface equator-to-pole gradient, as expected in global warming conditions.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1612998</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1612998</link>
        <title><![CDATA[Traces of tricritical dynamics beyond SSB in finite-size systems undergoing second-order phase transition: the case of the 3D Ising model]]></title>
        <pubdate>2025-08-01T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Yiannis Contoyiannis</author><author>Stelios M. Potirakis</author><author>Stavros G. Stavrinides</author><author>Michael P. Hanias</author><author>Pericles Papadopoulos</author><author>Niki-Lina Matiadou</author>
        <description><![CDATA[In finite-size thermal systems that exhibit second-order phase transition, the fluctuations of the order parameter ϕn obey type I intermittent dynamics at their pseudocritical temperature Tpc. Moreover, as recently demonstrated, spontaneous symmetry breaking (SSB) is gradually completed as temperature is reduced until reaching an SSB completion temperature, TSSB. Within this temperature zone, ϕn obey the dynamics of critical intermittency. This behavior has also been observed in pre-seismic fracture-induced electromagnetic emissions (FEME) of the MHz band—a real-world finite-size system undergoing a second-order phase transition. Interestingly, MHz FEME has recently been found to consistently present indications of tricritical dynamics after the SSB. We examine here whether this could also be true for a finite-size thermal system. We conduct a numerical experiment for the 3D Ising model at different temperatures by gradually reducing temperature beyond SSB and analyze order parameter fluctuations using the method of critical fluctuations (MCF) and a recently introduced wavelet-based method for detecting scaling behavior in noisy experimental data. Our results reveal that power-laws still exist within a very narrow zone of temperatures right after SSB completion for the 3D Ising model. These power-laws are shown to be compatible with another form of intermittency that determines the dynamics of the order parameter fluctuations close to the Griffiths tricritical point. As a possible interpretation of this finding, we suggest that our results imply that 3D Ising presents, just below TSSB, an imprint approaching the Griffiths tricritical point from the second-order phase transition line.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1563687</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1563687</link>
        <title><![CDATA[On cyclostationary linear inverse models: a mathematical insight and implication]]></title>
        <pubdate>2025-04-22T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Justin Lien</author><author>Yan-Ning Kuo</author><author>Hiroyasu Ando</author><author>Shoichiro Kido</author>
        <description><![CDATA[Cyclostationary linear inverse models (CS-LIMs) are advanced data-driven techniques for extracting first-order time-dependent dynamics and random forcing information from cyclostationary observational data. This study focuses on the mathematical perspective of CS-LIMs and presents two variants, namely, e-CS-LIM and l-CS-LIM. The e-CS-LIM, improved from the original CS-LIM, constructs the first-order dynamics through the interval-wise application of the stationary LIM (ST-LIM), capturing the integrated effect of each interval where similar cyclostationary dependencies are present. This approach provides robustness against noise but is affected by the Nyquist issue, similar to the ST-LIM. The l-CS-LIM, on the other hand, estimates the time-dependent Jacobian of the underlying system. Although more sensitive to noise, this method is free from the Nyquist issue. Numerical experiments demonstrate that both CS-LIM variants effectively capture the temporal structure of the underlying system using synthetic observational data. Moreover, when applied to real-world ENSO data, CS-LIMs yield consistent results that align well with the observations and current El Niño–Southern Oscillation (ENSO) understanding.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1569364</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1569364</link>
        <title><![CDATA[Conflict and cooperation: a systematic exploration]]></title>
        <pubdate>2025-04-16T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Leonardo Castro-Gonzalez</author><author>Rodrigo Leal-Cervantes</author><author>Ekkehard Ernst</author>
        <description><![CDATA[Economic cooperation is inherently dynamic, with agents adjusting the frequency, mechanisms, and intensity of their interactions over time. When scaling this behaviour to a large number of agents, we obtain a complex cooperation network where interaction dynamics influence the system’s macro-state. This study looks into how network topologies impact the survival of economic cooperation. Specifically, we explore the effect of topologies in sustaining cooperation through the survival of a “saving trait”, a feature that promotes cooperative interactions among agents. In our model, similar to a Stag Hunt (SH) game with memory, agents adapt their saving traits based on the profitability of past interactions with others. We simulate the game on seven distinct network structures sourced from the public repository Netzschleuder and analyse the robustness of the saving trait under topological shocks. From the seven studied networks, we recover the two equilibria dynamics from the SH game for four of them. For the remaining three, we obtain stable mixed states. These findings show that network topology affects the survival of the saving trait and its vulnerability to widespread topological shocks (over 25% of edges shifted or added). This work contributes to the interdisciplinary effort to understand economic cooperation by integrating insights from network science, game theory, and the social sciences.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1565736</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1565736</link>
        <title><![CDATA[Insight into employees' perceptions on reform initiatives in public service organizations using fractional order derivatives with optimal control strategies]]></title>
        <pubdate>2025-03-28T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Gizachew Kefelew Hailu</author><author>Shewafera Wondimagegnhu Teklu</author><author>Yohannes Fissha Abebaw</author><author>Dejen Ketema Mamo</author>
        <description><![CDATA[This study presents a compartmental model that classifies employees into three categories: “indifferent,” “resistant,” and “adaptive,” to explore their transitions based on adaptation to workplace reform initiatives. The researchers rigorously assessed the model for well-posedness and stability of its steady states. Utilizing Pontryagin’s maximum principle alongside numerical simulations, the researchers identified effective strategies aimed at reducing the number of resistant employees, thereby cultivating a more supportive atmosphere for reform efforts. The findings indicate that such an environment encourages employees to remain indifferent or adaptive, fostering a positive outlook toward change. The optimal strategies identified include providing training sessions to enhance employees' skills for adapting to new processes and technologies, as well as ensuring clear communication regarding the rationale, benefits, and impacts of the reforms. Furthermore, the study examined memory effects by transforming the integer order model into a fractional order model, with graphical representations highlighting the significance of fractional derivatives in illustrating the evolution of employees' perceptions over time. This research contributes valuable insights into managing employee adaptation during organizational change.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1534330</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1534330</link>
        <title><![CDATA[Carbon storage of seagrass ecosystems may experience tipping points in response to anthropogenic stress - a modeling perspective]]></title>
        <pubdate>2025-03-18T00:00:00Z</pubdate>
        <category>Perspective</category>
        <author>Vasilis Dakos</author><author>Antoine Le Vilain</author><author>Elisa Thebault</author><author>Teresa Alcoverro</author><author>Jordi Boada</author><author>Eduardo Infantes</author><author>Dorte Krause-Jensen</author><author>Núria Marbà</author><author>Oscar Serrano</author><author>Salvatrice Vizzini</author><author>Eugenia T. Apostolaki</author>
        <description><![CDATA[Coastal Blue Carbon ecosystems like seagrass meadows are foundation habitats with a capacity to sequester and store organic carbon in their sediments, and their protection and restoration may thereby support climate change mitigation while also supporting biodiversity and many other ecosystem functions. However, seagrass ecosystems are being lost due to human activities, disease and, in some regions, climate change, which may trigger the release of stored carbon into the atmosphere. Yet, we do not fully understand how global change-induced seagrass loss influences sedimentary carbon dynamics. What is even less clear is whether seagrass loss may also result in tipping points, i.e., abrupt and difficult-to-reverse shifts, in carbon flux dynamics turning seagrass ecosystems from net carbon sinks to net carbon sources. Here, we propose that conceptual mechanistic models of coupled ecological and biogeochemical dynamics can help to study the effects of major stressors on seagrass meadows and associated carbon fluxes. We then illustrate one case of such a conceptual model that focuses on anthropogenic induced mortality by physical stress as an example. Our perspective highlights how a modeling approach for understanding the response of carbon fluxes in seagrass ecosystems to global change stressors may be useful in informing coastal seagrass management towards climate change mitigation actions.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1544420</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2025.1544420</link>
        <title><![CDATA[Diversity is key: fantasy football dream teams under budget constraints]]></title>
        <pubdate>2025-02-25T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Josef Gullholm</author><author>Jil Klünder</author><author>Julie Rowlett</author><author>Jonathan Stålberg</author>
        <description><![CDATA[Given a fixed budget for player salaries, what is the distribution of salaries of the top scoring teams? We investigated this question using the wealth of data available from fantasy premier league football (soccer). Using the players’ data from past seasons, for several seasons and several different budget constraints, we identified the highest scoring fantasy team for each season subject to each budget constraint. We then investigated quantifiable characteristics of these teams. Interestingly, across nearly every variable that is significant to the game of football and the budget, these top teams display diversity across these variables. Furthermore, randomly assembled teams would statistically not display such diversity across these variables. Our results indicate that diversity across these variables, including salaries, is a general feature of top performing teams. Moreover, in the process of obtaining these results we developed a data cleaning (or data reduction) algorithm that drastically reduced the amount of data to be analyzed.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1429114</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1429114</link>
        <title><![CDATA[Revisiting Southern Gallo-Romance from a complexity theory standpoint: Occitan]]></title>
        <pubdate>2024-12-20T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Jean Léo Léonard</author>
        <description><![CDATA[In this paper, the inner structure of the Occitan dialect network is revisited in the light of a range of cumulative (Ward’s method) vs. reductive (Complete linkage, Groupe Average, Weighted Average) hierarchical algorithms provided by Gabmap, an Online dialectometric application for calculating distance/similarities by edit distance (Levenshtein algorithm). Reticularity of the Occitan geolinguistic space is addressed through connectograms using Gephi, and Multidimensional Scaling is also used to some extent. After sketching the canonical classifications of the Occitan geolinguistic space (Bec, Ronjat), providing the “eponymous dialects”, we explore the deep patterns of this diasystem, bringing to light a hierarchy of systemic entities constituting an array of “invisible dialects”, corresponding to entities of various size and functions (macrodialects, dialects, subdialects, varieties, hubs, small worlds, buffer zones, default dialects). The approach is based on concrete linguistic data from the THESOC database (Université de Nice/CNRS), contrasting the major isoglosses (macrodialectal features) with the “intricate variables”, i.e., segmental nexi, extracting data relating to strategic points in the complex dialectal network from reductionist algorithms.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1497038</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1497038</link>
        <title><![CDATA[Editorial: Complexity in language variation and change]]></title>
        <pubdate>2024-10-11T00:00:00Z</pubdate>
        <category>Editorial</category>
        <author>Els Heinsalu</author><author>Marco Patriarca</author><author>David Sanchez</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1359092</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1359092</link>
        <title><![CDATA[Delay model for the dynamics of information units in the digital environment]]></title>
        <pubdate>2024-04-11T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Sebastián Pinto</author><author>Alejandro Pardo Pintos</author><author>Pablo Balenzuela</author><author>Marcos A. Trevisan</author>
        <description><![CDATA[The digital revolution has transformed the exchange of information between people, blurring the traditional roles of sources and recipients as active and passive entities. To study this, we build on a publicly available database of quotes, organized as units of information flowing through media and blogs with minimal distortion. Building on this, we offer an innovative interpretation of the observed temporal patterns through a minimal model with two ingredients: a two-way feedback between sources and recipients, and a delay in the media’s response to activity on blogs. Our model successfully fits the variety of observed patterns, revealing different attention decays in media and blogs, with rebounds of information typically occurring between 1 and 4 days after the initial dissemination. More important perhaps, the model uncovers a functional relationship between the rate of information flow from media to blogs and the decay of public attention, suggesting a simplification in the mechanisms of information exchange in digital media. Although further research is required to generalize these findings fully, our results demonstrate that even a bare-bones model can capture essential mechanisms of information dynamics in the digital environment.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1323321</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1323321</link>
        <title><![CDATA[Quantitative scenarios for cascading risks in AI, climate, synthetic bio, and financial markets by 2075]]></title>
        <pubdate>2024-03-15T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Trond Arne Undheim</author><author>Taimur Ahmad</author>
        <description><![CDATA[Humanity faces a myriad of existential technology, geopolitical, and ecological risks. The paper analyzes the possibility that negative shocks superimpose and multiply their effects, leading to catastrophic macro-dynamics. Methodologically, this paper presents a rare, quantitative scenario model superimposed upon narrative scenarios where the cascading economic effects of 19 quantitative indicators of growth or decline are projected into 2075. These indicators map onto five narrative scenarios, and are subsequently re-combined to study effects of plausible cascading risk events coming to pass in the 50 years period between 2025 and 2075. Results indicate that even in the case of deeply catastrophic singular events, the world would eventually recover within 25 years, as has historically been the case. The exception is that in the event of several catastrophic events in short order around the midpoint of the 50-year scenario timeline, the cascading risk escalation would create formidable negative cascades. The possibility of a protracted depression and no visible recovery within 25 years is the result. However, if we assume a modest interaction effect, even with just 3-5 co-occurring catastrophes, the result becomes a path towards humanity’s extinction based on economic decline alone. The implications are that humanity either needs to avoid significant cascading effects at all costs or needs to identify novel ways to recover compared to previous depressions. Given the amount of model assumptions they rely upon, these projections carry a degree of uncertainty. Further study should therefore be conducted with a larger set of indicators and impacts, including mortality modeling, to assess how much worse plausible real-world outcomes might be compared to the simplified economic model deployed here.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1327425</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2024.1327425</link>
        <title><![CDATA[Is language change chiefly a social diffusion affair? The role of entrenchment in frequency increase and in the emergence of complex structural patterns]]></title>
        <pubdate>2024-03-14T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Quentin Feltgen</author>
        <description><![CDATA[Complex systems research has chiefly investigated language change from a social dynamics perspective, with undeniable success. However, there is more to language change than social diffusion, i.e., a one-off adoption of an innovative variant by language users. Language use indeed factors in, besides prevalence (the percentage of adopters of the form in the community), lexical diversity (the number of different lexical items a conventionalized pattern combines with), and entrenchment (the average rate at which speakers choose the form in suitable pragmatic environments). Changes in token frequency may reflect changes in any of these three variables. To sort them out, we defined proxies to factor entrenchment out of empirical measures of prevalence and lexical diversity. From a French corpus, we analyzed 25 schematic constructions, featuring an open slot that hosts a variety of fillers. We show that their rise of token frequency across a change episode is mostly explained by entrenchment; however, the magnitude of the change is uniquely explained by the final extent of its lexical diversity. Furthermore, the fillers obey a construction-specific Zipf-Mandelbrot organization, that robustly holds throughout the change episode. We also show that in some cases, the fillers arise simultaneously, hinting at the possibility that such a complex organization emerges all at once, highlighting the role of structural features in language change.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2023.1304448</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2023.1304448</link>
        <title><![CDATA[Language dynamics within adaptive networks: an agent-based approach of nodes and links coevolution]]></title>
        <pubdate>2023-12-01T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Christos Charalambous</author><author>David Sanchez</author><author>Raul Toral</author>
        <description><![CDATA[Motivated by the dramatic disappearance of endangered languages observed in recent years, a great deal of attention has been given to the modeling of language competition in order to understand the factors that promote the disappearance of a language and its unfolding dynamics. With this in mind, we build on existing network models of language competition in bilingual societies. These models deal with the interplay between the usage of a language (link state) and the preference or attitude of the speakers towards the language (node state). In this work, we allow for the case where agents have the freedom to adapt their local interactions in accordance with their language preference. This is modeled by introducing a local rewiring mechanism triggered by the dissatisfaction of an agent with its usage of a given language. Our numerical simulations show that permitting this freedom to agents likely results in linguistically segregated communities for small network sizes. However, for networks of sufficiently large size, the extinction of one of the languages is the most probable scenario. Furthermore, we analyze how the fraction of minority speakers changes with the system size and we find that this fraction grows as the total population increases, which is consistent with existing data. Overall, the results of this work help us understand the impact of speakers’ preferences and choices in the complex language landscape of bilingual societies.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fcpxs.2023.1273741</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fcpxs.2023.1273741</link>
        <title><![CDATA[Syntactic variation across the grammar: modelling a complex adaptive system]]></title>
        <pubdate>2023-09-29T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Jonathan Dunn</author>
        <description><![CDATA[While language is a complex adaptive system, most work on syntactic variation observes a few individual constructions in isolation from the rest of the grammar. This means that the grammar, a network which connects thousands of structures at different levels of abstraction, is reduced to a few disconnected variables. This paper quantifies the impact of such reductions by systematically modelling dialectal variation across 49 local populations of English speakers in 16 countries. We perform dialect classification with both an entire grammar as well as with isolated nodes within the grammar in order to characterize the syntactic differences between these dialects. The results show, first, that many individual nodes within the grammar are subject to variation but, in isolation, none perform as well as the grammar as a whole. This indicates that an important part of syntactic variation consists of interactions between different parts of the grammar. Second, the results show that the similarity between dialects depends heavily on the sub-set of the grammar being observed: for example, New Zealand English could be more similar to Australian English in phrasal verbs but at the same time more similar to UK English in dative phrases.]]></description>
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