Article
Mathematics, Interdisciplinary Applications
Daniel Fraiman
Summary: Selling a new zero-marginal cost product is challenging in today's economy. We introduce an auction model as a solution, which allows continuous bidding and considers both profit and market visibility.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Transportation Science & Technology
Jorge A. Laval
Summary: Self-organized criticality is a paradigm for understanding dynamical systems naturally driven to its critical point. It was realized that traffic flow might also fall into this category, suggesting that conventional traffic management strategies can become detrimental. This paper shows that the Kinematic Wave model and other related traffic models indeed exhibit self-organized criticality, thanks to the fractal nature of traffic and our desire to reach destinations as soon as possible.
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
(2023)
Review
Psychology, Multidisciplinary
Nike Walter, Thilo Hinterberger
Summary: No current model of consciousness is universally accepted, and a solid unifying framework is needed. Self-organized criticality (SOC) is considered a fundamental property of neural systems and a potential surrogate measure of consciousness. This study provides a comprehensive overview of research on SOC and its association with consciousness, highlighting the agreement between critical dynamics and influential theories in consciousness research.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Physics, Multidisciplinary
S. S. Manna, Soumyajyoti Biswas, Bikas K. Chakrabarti
Summary: By studying the sub-critical dynamical features of four self-organized critical models as they approach their respective stationary critical states, it is found that these models exhibit nearly universal values in inequality measures, suggesting broad similarity in terms of these measures possibly due to proximity to self-organized critical states.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2022)
Article
Mechanics
Anjan Roy, Serena Di Santo, Matteo Marsili
Summary: Information processing networks are shaped by local rewiring rules that promote links based on positively correlated node activities. A simple toy model is used to show that under these conditions, a core of densely connected nodes spontaneously forms. The appearance of this clustered state can be dynamically regulated by a fatigue mechanism to produce non-trivial avalanche exponents.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2021)
Article
Statistics & Probability
Nicolas Forien
Summary: This study focuses on the planar Ising model in a finite square box where the temperature parameter is replaced with a function dependent on magnetization, leading to a feedback loop driving the system towards the critical point. By utilizing the finite-size scaling results of Cerf and Messikh, it is demonstrated that as the box size approaches infinity, the temperature distribution converges around the critical temperature of the planar Ising model on the square lattice.
PROBABILITY THEORY AND RELATED FIELDS
(2021)
Article
Computer Science, Interdisciplinary Applications
Gui-Qing Zhang, Zi Yu, Tian-Yuan Liu, Yong-Fang Jiao, Lin-Na Li
Summary: This study examines the real seismic behavior and finds that large mainshocks are often followed by aftershocks, which exhibit relatively slow relaxation. The statistical distributions of seismic magnitude, and time intervals between mainshocks and aftershocks are shown to conform to power law behaviors. The study of aftershock behavior is found to be of practical significance for understanding large earthquakes. Additionally, the long-range interactions OFCR model provides a valuable supplement for analyzing large earthquake data.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2022)
Article
Materials Science, Multidisciplinary
Jiahao Yang, Weishi Yuan, Takashi Imai, Qimiao Si, Jianda Wu, Marton Kormos
Summary: Considerable recent progress has been made in identifying candidate materials for the transverse-field Ising chain (TFIC), a paradigmatic model for quantum criticality. In this study, we investigate the local spin dynamical structure factor of different spin components in the quantum disordered region of the TFIC. Our findings reveal surprising temperature dependencies in the low-frequency local dynamics of spins in the Ising and transverse-field directions.
Article
Physics, Fluids & Plasmas
S. S. Manna
Summary: We studied a sandpile automata with height restriction of sand columns. In this sandpile, an active site transfers a grain to a neighboring site only if the height of the sand column at the destination site is less than a preassigned value nc. We analyzed the avalanche dynamics of the driven sandpile under open boundary conditions and found that the deterministic dynamics of the BTW sandpile under the height restriction are non-Abelian. Results from numerical simulations suggest that the steady states of the sandpile are recurrent states of the BTW sandpile, but with different probabilities and exponent values.
Article
Multidisciplinary Sciences
Alexander Shapoval, Boris Shapoval, Mikhail Shnirman
Summary: The BTW model, developed in 1987, has laid the theoretical foundation for self-organized criticality (SOC) and has led to advancements in various scientific areas such as statistical physics, mathematics, and applied fields. The core principles of BTW, based on steady loading and sudden stress-release, have been key in understanding SOC and its applications in real-life processes.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Multidisciplinary
Kei Katahira, Yu Chen, Eizo Akiyama
Summary: The Self-organized Speculation Game refines the Speculation Game by adjusting the number of market participants spontaneously, resembling the behavior of the BTW model. This model can produce financial stylized facts through self-organized quasi-criticality in real financial markets.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Environmental Sciences
Zhonghua Qian, Yuxin Xiao, Luyao Wang, Qianjin Zhou
Summary: Based on precipitation data from the rainy season in east China, it was found that the quiet time of precipitation follows a power-law distribution. This pattern holds for different threshold levels and regions. These results confirm that precipitation is an example of self-organized criticality in the weather system of China. By analyzing the exponent, mean quiet time, and hazard function of the probability density function, sensitive regions for precipitation events in China can be identified.
Article
Engineering, Manufacturing
Xulong Zhang, Yonggang Li, Weiyang Chen, Bei Sun, Chunhua Yang
Summary: This study proposes a self-organized cascade collaborative optimization method for associated unit processes in the process manufacturing industry. By describing the operating status and coupling relationship of the system, a global optimization model is constructed. The method improves economic benefits and ensures system stability.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Mathematics, Interdisciplinary Applications
Alexander Milovanov, Jens Juul Rasmussen, Bertrand Groslambert
Summary: The research describes a new model of self-organized criticality, called the e-pile model, which uses electrically charged particles to propagate activities and generate a critical state. Inspired by dielectric relaxation in random lattices, the model can be applied to various SOC processes with random injection and lattice-redistribution rules. It shows that the critical state involves self-evolving random percolation clusters, different from known self-organized versions, and presents a set of critical exponents based on random walks and complex conductivity formalism.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Physics, Multidisciplinary
N. Antonov, P. Kakin, N. M. Lebedev, A. Yu Luchin
Summary: In this study, a self-organized critical system coupled to an isotropic random fluid environment is investigated. The problem of two coupled stochastic equations is represented as a field theoretic model, which is shown to be multiplicatively renormalizable. The renormalization group equations possess a semi-infinite curve of fixed points in the four-dimensional space of the model parameters. The main critical dimensions are calculated to leading (one-loop) order, and it is reasonable to interpret the curve as a single universality class.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2023)
Article
Food Science & Technology
Francisco Peran-Sanchez, Salud Serrano, Eduardo Gutierrez de Rave, Elena Sanchez-Lopez, Ana Cumplido, Francisco J. Jimenez-Hornero
Article
Environmental Sciences
Amanda P. Garcia-Marin, Javier Estevez, Renato Morbidelli, Carla Saltalippi, Jose Luis Ayuso-Munoz, Alessia Flammini
Article
Environmental Sciences
Rafael Carmona-Cabezas, Javier Gomez-Gomez, Eduardo Gutierrez de Rave, Elena Sanchez-Lopez, Joao Serrano, Francisco Jose Jimenez-Hornero
Article
Environmental Sciences
Javier Estevez, Juan Antonio Bellido-Jimenez, Xiaodong Liu, Amanda Penelope Garcia-Marin
Article
Physics, Multidisciplinary
Javier Gomez-Gomez, Rafael Carmona-Cabezas, Elena Sanchez-Lopez, Eduardo Gutierrez de Rave, Francisco Jose Jimenez-Hornero
Summary: The study shows that temperature rise does not affect the complex network structures and nonlinear features, and climate signals in different locations exhibit similar behaviors that can be well described by network parameters.
Article
Engineering, Chemical
Thomas Plocoste, Rafael Carmona-Cabezas, Francisco Jose Jimenez-Hornero, Eduardo Gutierrez de Rave
Summary: In this study, the investigation on PM10 background atmosphere in the Caribbean area revealed that UDVG is an efficient tool for noise fluctuations analysis, where low concentrations also play an important role.
JOURNAL OF AEROSOL SCIENCE
(2021)
Article
Physics, Multidisciplinary
Javier Gomez-Gomez, Rafael Carmona-Cabezas, Ana B. Ariza-Villaverde, Eduardo Gutierrez de Rave, Francisco Jose Jimenez-Hornero
Summary: An increasing number of studies focus on extreme weather conditions related to climate change, with some using multifractal methods like the Multifractal Detrended Fluctuation Analysis (MF-DFA). Analysis of temperature data from Spain shows that all temperature variables exhibit multifractal properties and changes between two periods. Coastal locations generally have wider spectra for temperature variables compared to inland locations, with spectra width decreasing in the last period for minimum and mean temperature.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Environmental Sciences
Thomas Plocoste, Rafael Carmona-Cabezas, Eduardo Gutierrez de Rave, Francisco Jose Jimenez-Hornero
Summary: This study utilized a new multilayer complex networks called MVG to analyze the relationship between PM10 wet scavenging by rainfall, and found that the impact of rainfall on PM10 concentrations is more significant when the atmosphere is loaded with dust. The joint probability computed between the PM10 and rainfall nodes confirmed the correlation between them.
ATMOSPHERIC POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Juan Antonio Bellido-Jimenez, Javier Estevez Gualda, Amanda Penelope Garcia-Marin
Summary: This study assessed various machine learning models for filling in missing rainfall data, finding that using neighbor data within a 50 km radius outperformed other approaches. Results also showed improvements in inland areas compared to coastal areas, with the efficiency effects based on the distance to the sea being significant.
Article
Mathematics, Interdisciplinary Applications
Javier Gomez-Gomez, Rafael Carmona-Cabezas, Elena Sanchez-Lopez, Eduardo Gutierrez de Rave, Francisco Jose Jimenez-Hornero
Summary: In this study, an analysis of multifractal parameters of daily precipitation series over the Iberian Peninsula was conducted. The results showed that the fluctuations of precipitation series exhibit three distinct scaling regions, and there is a certain degree of multifractality, which is particularly pronounced at small timescales. The persistence of precipitation is found to align with the spatial gradient of annual precipitation, and the multifractal parameters of precipitation are modified based on complex spatial and temporal patterns.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Meteorology & Atmospheric Sciences
Javier Estevez, Alba Llabres-Brustenga, M. Carmen Casas-Castillo, Amanda Penelope Garcia-Marin, Ricard Kirchner, Raul Rodriguez-Sola
Summary: This study implemented a comprehensive spatial quality control procedure to evaluate the quality of precipitation data in the Andalusia region. The results showed significant differences in quality among different meteorological networks. Despite the limitations of low data density and water deficit in the region, the quality control procedure was satisfactorily applied.
THEORETICAL AND APPLIED CLIMATOLOGY
(2022)
Article
Environmental Sciences
Maria del Carmen Casas-Castillo, Raul Rodriguez-Sola, Alba Llabres-Brustenga, Amanda Penelope Garcia-Marin, Javier Estevez, Xavier Navarro
Summary: This study conducted a scaling analysis in Andalusia, Spain to investigate the relationship between the scaling parameter value and the characteristic rainfall regime of the region. The study found a clear dependence on rainfall irregularity, as well as the influence of the Mediterranean Sea on the easternmost dry areas. The parameter was also used to calculate intensity-duration-frequency curves and study temporal trends in rainfall patterns.
Article
Peripheral Vascular Disease
Francisco Jose Rodriguez-Cortes, Jorge E. Jimenez-Hornero, Juan Francisco Alcala-Diaz, Francisco Jose Jimenez-Hornero, Juan Luis Romero-Cabrera, Rosaria Cappadona, Roberto Manfredini, Pablo Jesus Lopez-Soto
Summary: The present study investigated the impact of daylight saving time (DST) transitions on the incidence of hospital admissions for major acute cardiovascular events (MACE). Using natural visibility graphs (NVGs) and data from Andalusian public hospitals between 2009 and 2019, the study found a slight increase in the risk of heart attacks after DST transitions, but this increase did not significantly alter the overall pattern of hospital admissions.
Article
Water Resources
Bruno Bellettini, Amanda Penelope Garcia-Marin
Summary: Sanitation is an unmet basic need in rural areas and traditional technology not only fails to meet the demand but also causes economic losses. This research, based on the Economics Sanitation Initiative methodology, analyzed the damage-cost of the lack of sanitation access in rural Ecuador. The outcomes indicate that sanitation impacts health, water resources, and the overall GDP. Therefore, ecosanitation is suggested as a simple and cost-effective alternative for rural communities, bringing economic benefits to users.
ENGENHARIA SANITARIA E AMBIENTAL
(2022)
Article
Mathematics, Interdisciplinary Applications
Javier Gomez-Gomez, Ana B. B. Ariza-Villaverde, Eduardo Gutierrez de Rave, Francisco J. Jimenez-Hornero
Summary: This study investigates the multifractal relationship between reference evapotranspiration (ET0), relative humidity (RH), mean surface temperature (Tmean), wind speed (U-2), and solar radiation (SR) in the Guadalquivir River Valley. The results show that Tmean and RH have the highest long-term persistence. The elimination of trends in the signals provides more precise multifractal properties for ET0, Tmean, and RH. Only ET0's medium and large fluctuations exhibit multifractal cross-correlations with its controlling factors, except for U-2. The dynamics of multifractality differ among the analyzed variables.
FRACTAL AND FRACTIONAL
(2023)