Article
Mathematics, Interdisciplinary Applications
Junpyo Park, Xiaojie Chen, Attila Szolnoki
Summary: In a diverse population, competitors can form alliances to ensure stable coexistence against invasion. We studied a Lotka-Volterra model of eight-species and found that equally strong alliances were more likely to prevail. However, there were regions where symmetry was broken and a solution dominated by seven species emerged. Finite-size effects could also prevent observing the valid solution in a small system.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Mathematics, Applied
Attila Szolnoki, Matjaz Perc
Summary: The self-protection of alliances is crucial for maintaining biodiversity in the face of natural selection. Two-species alliances can either defeat each other or exchange positions through inner dynamics. The four-species model shows diverse behaviors depending on the characteristics of inner invasions and the intensity of site exchanges. In cases where the inner invasion is biased, three-member rock-scissors-paper-type solutions emerge. Interestingly, if the oppressed species engage in more intensive site exchanges, they can become a winning pair and dominate the parameter space.
APPLIED MATHEMATICS AND COMPUTATION
(2023)
Article
Mathematics, Interdisciplinary Applications
D. Bazeia, M. Bongestab, B. F. de Oliveira, A. Szolnoki
Summary: The introduction of a fourth species into a model of three cyclically dominant species may not necessarily disrupt the coexistence of species, but can lead to three consecutive phase transitions. Through analysis using various techniques and Hamming distance density profiles, the study reinforced previous findings about cyclically dominant systems and revealed new insights and counter-intuitive phenomena.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Mathematics, Interdisciplinary Applications
Zhiyang Gu, Yu Xiao, Qin Cen, Rui Tao, Zhimin Liu, Shaoyu Zhou
Summary: The emergence of cooperation is a challenging problem, but can be promoted through a coevolution mechanism where individuals adjust the strength of their relationships with neighbors. Agent-based simulations show that cooperative behavior is greatly enhanced under this mechanism, with an optimal ratio of co-evolutionary individuals contributing to the evolution of cooperation.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Biology
Patricia Beltrao, Ana Cristina R. Gomes, Goncalo C. Cardoso
Summary: Bullying is a phenomenon where individuals attack those lowest in the social dominance hierarchy, and its purpose is not yet fully understood because the victims do not pose a challenge to the aggressors. However, it appears that bullying may serve as a means of displaying dominance to others. This can help manage dominance hierarchies and avoid direct confrontations with potentially dangerous opponents.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Letter
Evolutionary Biology
Avneet K. Chhina, Ken A. Thompson, Dolph Schluter
Summary: This study used threespine stickleback fish to test the relationship between trait mismatch in hybrids and phenotypic divergence, and found that trait mismatch increases with greater phenotypic divergence.
Article
Mathematics
Joon Yoo
Summary: Vehicular ad hoc networks are composed of self-organizing nodes that communicate using multi-hop wireless links without any infrastructure support. Traditional ad hoc routing protocols use the minimum hop count as their routing metric, but this no longer results in high throughput due to the emergence of multi-rate capable radio interfaces. This paper proposes a high throughput routing scheme called MARV, which searches for high throughput paths using an on-demand route searching algorithm, reducing the routing overhead compared to other multi-rate-aware routing schemes.
Article
Mathematics, Interdisciplinary Applications
Tina Verma, Arvind Kumar Gupta
Summary: Connectivity is crucial for biodiversity conservation as connected habitats are more effective in saving species and ecological functions. The rock-paper-scissors game serves as a paradigmatic mathematical model to understand biodiversity in cyclic-dominance. The metapopulation model for rock-paper-scissors with mutations shows coexistence patterns and phase transitions due to transcritical bifurcation.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Computer Science, Artificial Intelligence
Saykat Dutta, M. Sri Srinivasa Raju, Rammohan Mallipeddi, Kedar Nath Das
Summary: This paper proposes a decomposition-based multi-objective optimization algorithm that effectively solves problems with discontinuous or degenerated Pareto fronts. It also introduces an adaptive mating selection strategy to further improve the algorithm's performance.
APPLIED SOFT COMPUTING
(2023)
Article
Computer Science, Hardware & Architecture
Jiaqi Zou, Rui Liu, Chenwei Wang, Yuanhao Cui, Zixuan Zou, Songlin Sun, Koichi Adachi
Summary: This study proposes a flexible and adaptive resource management framework for addressing the challenges posed by harsh environments on networking strategies. The framework incorporates environment awareness functionality and introduces a new network architecture with deep-learning-based resource prediction and self-organized service management modules. Experimental results demonstrate the effectiveness and efficiency of the proposed functionalities. Several promising directions for resource management in harsh environments are also highlighted.
Article
Multidisciplinary Sciences
Chen Shen, Marko Jusup, Lei Shi, Zhen Wang, Matjaz Perc, Petter Holme
Summary: The study shows that a simple option to exit the game can promote cooperation in well-mixed populations, but has a weaker effect in networked populations. Through cyclic dominance, the presence of exiters enables the coexistence of cooperators, defectors, and exiters.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2021)
Article
Physics, Multidisciplinary
Rico Berner, Simon Vock, Eckehard Schoell, Serhiy Yanchuk
Summary: The study developed a master stability approach for a wide class of adaptive networks, simplifying the synchronization problem to a low-dimensional system and revealing the interplay between adaptivity and network structure in the formation of stability islands and complex synchronization patterns.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Sayantan Nag Chowdhury, Srilena Kundu, Matjaz Perc, Dibakar Ghosh
Summary: The study explores eco-evolutionary dynamics through two metaphorical social dilemmas, introducing punishment as an additional strategy and considering the altruistic impact of free space in the ecological context. It demonstrates the complex evolutionary dynamics with the spontaneous emergence of different subpopulations and various stable points.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Multidisciplinary Sciences
Michael D. Konig, Andrei Levchenko, Tim Rogers, Fabrizio Zilibotti
Summary: This paper studies the policies to improve the resilience of supply chains by reducing dependence on foreign suppliers. An adaptive production network model is used to analyze the consequences of reshoring, finding that restricting buyer-supplier links can reduce output and increase volatility.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Mathematics, Applied
Rodrigo Almeida, Rui Dilao
Summary: A class of equations describing low Reynolds number steady flows of incompressible and viscous fluids in networks made of straight channels has been derived. The adaptive conductivities describe the transverse channel elasticities, and a steady state tree geometry for the graph connecting sources and sinks is reached asymptotically in time. A phase transition tuned by an order parameter for the adapted steady state graph has been found.
PHYSICA D-NONLINEAR PHENOMENA
(2022)
Article
Multidisciplinary Sciences
Justin D. Yeakel, Mathias M. Pires, Marcus A. M. de Aguiar, James L. O'Donnell, Paulo R. Guimaraes, Dominique Gravel, Thilo Gross
NATURE COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Ashkaan K. Fahimipour, Thilo Gross
NATURE COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Amin Ghafourian, Orestis Georgiou, Edmund Barter, Thilo Gross
SCIENTIFIC REPORTS
(2020)
Article
Microbiology
Klara K. E. Wolf, Clara J. M. Hoppe, Florian Leese, Martina Weiss, Bjoern Rost, Stefan Neuhaus, Thilo Gross, Nancy Kuehne, Uwe John
Summary: The MPB method is capable of effectively tracking allele frequency changes in protist populations, revealing meaningful patterns of population dynamics in both experimental and environmental settings.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Neurosciences
Thilo Gross
Summary: The past decade has witnessed a growing support for the critical brain hypothesis, suggesting the brain may operate at or very near a critical state between different dynamical regimes. While critical states are well-studied in various disciplines, the revisit of bifurcation theory foundation, the mathematical theory of transitions, has brought new insights and hypotheses when applied to neural dynamics.
FRONTIERS IN NEURAL CIRCUITS
(2021)
Article
Multidisciplinary Sciences
Edmund Barter, Andreas Brechtel, Barbara Drossel, Thilo Gross
Summary: The Jacobian matrix describes a dynamical system's response to perturbations and can be estimated by monitoring the system's response to environmental noise. A closed-form analytical solution for calculating the system's Jacobian from a time series allows for a broad range of mathematical analyses to gain deeper insights into the system. The computation of the leading Jacobian eigenvalue serves as an early warning signal for critical transitions.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Jana C. Massing, Thilo Gross
Summary: Understanding the complex dynamics of uncertain systems is a major challenge in current research. Conventional dynamic models face difficulties in handling this complexity and are limited by computational and data restrictions. Generalized modeling provides an alternative approach that effectively deals with uncertainties and offers analytical insights and efficient numerical investigations.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Multidisciplinary Sciences
Ashkaan K. Fahimipour, Fanqi Zeng, Martin Homer, Arne Traulsen, Simon A. Levin, Thilo Gross
Summary: This article analyzes the transition between homogeneous and self-organized states in a cooperation game on a spatial network. The formation of safe havens is dependent on a certain threshold in connectivity, which can be linked to the structure of the patch network and specific network motifs. Surprisingly, a forgiving defector avoidance strategy may be most favorable for cooperators.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Physics, Multidisciplinary
Thilo Gross, Laura Barth
Summary: This paper revisits the robustness of complex networks with a deep but didactic introduction, paying attention to complications in computing giant component sizes that are commonly ignored, and deriving simple formulas to capture the effect of common attack scenarios on networks.
FRONTIERS IN PHYSICS
(2022)
Article
Multidisciplinary Sciences
Alexey Ryabov, Bernd Blasius, Helmut Hillebrand, Irina Olenina, Thilo Gross
Summary: Monitoring functional diversity is crucial in addressing climate change and biodiversity loss. This study demonstrates the use of diffusion maps to reconstruct species traits directly from monitoring data and estimate functional diversity. The wider application of this method to existing data could greatly advance the analysis of changes in functional biodiversity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Physics, Multidisciplinary
Silja Sormunen, Thilo Gross, Jari Saramaeki
Summary: It has been suggested that the brain operates in a self-organized critical state, which offers several advantages including optimal sensitivity to input. Traditionally, self-organized criticality has been viewed as a one-dimensional process, focusing on tuning one parameter to a critical value. However, considering the numerous adjustable parameters in the brain, it is likely that critical states exist in a high-dimensional manifold within a high-dimensional parameter space. This study demonstrates that adaptation rules based on homeostatic plasticity can drive a neuro-inspired network to drift on a critical manifold, maintaining the system in a poised state between inactivity and persistent activity, while global network parameters continue to change.
PHYSICAL REVIEW LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Nusrat Molla, John DeIonno, Thilo Gross, Jonathan Herman
Summary: This study investigates how the features of governance systems influence their response to change. The results suggest that the number of non-government organizations and efforts dedicated to venue shopping positively impact the stability of the system, while heterogeneity among actors, diversity of decision centers, and interdependence between actors have negative impacts on stability.
EARTH SYSTEM DYNAMICS
(2022)
Article
Physics, Fluids & Plasmas
Alexander Krauss, Thilo Gross, Barbara Drossel
Summary: This study extends the master stability function formalism to inhomogeneous biregular networks with two types of nodes, and analyzes the stability of ecological metacommunities to identify conditions for stabilizing dynamics. The study identifies self-regulation and negative feedback loops as stabilizing mechanisms, and shows that maladaptive dispersal may be stable under certain conditions.
Review
Biology
Thilo Gross, Korinna T. Allhoff, Bernd Blasius, Ulrich Brose, Barbara Drossel, Ashkaan K. Fahimipour, Christian Guill, Justin D. Yeakel, Fanqi Zeng
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2020)
Article
Education & Educational Research
Hugh Harvey, James Keen, Chester Robinson, James Roff, Thilo Gross
ASSESSMENT & EVALUATION IN HIGHER EDUCATION
(2019)