Eötvös Loránd University

Local Microstructure and Hardness of the Oxide-Layer of Oxalic Acid-Anodized A356 Alloy

The cross-sectional microstructure, local chemical composition, and mechanical behavior of anodic oxide layers produced by oxalic acid anodizing of cast A356 aluminum alloy were investigated using digital optical microscopy, scanning electron microscopy (SEM), energy-dispersive X...

Bounded gaps and perfect power gaps in sequences of consecutive primes

Abstract We study whether several consecutive prime gaps can all be relatively large at the same time, or is it possible that all are squares or perfect powers, or perhaps none of them are squares? A few related results and problems are also presented.

Stellar Interpretation of Meteoritic Data and PLotting for Everyone (SIMPLE): Isotope Mixing Lines for Six Sets of Core-collapse Supernova Models

Abstract Bulk meteorites and their inclusions exhibit, for many chemical elements, isotopic variability produced by nucleosynthetic events in stars and supernovae before the formation of the Sun. While the exact astrophysical origins of these variations are still a matter of deba...

The Total and Polarized Radio Emission from the Innermost Jets of a High-Redshift Quasar and a Candidate at Parsec-Scale Resolution

High-frequency very long baseline interferometry (VLBI) polarimetry probes synchrotron-emitting plasma closer to the central engines of radio-loud active galactic nuclei (AGNs), but observations above 43 GHz are technically demanding. We present 22-GHz European VLBI Network obser...

Conflict as a Relational Language: Caregivers' Interpretations of Adolescents' Conflicts in Residential Care

ABSTRACT The present study aims to explore interpersonal conflicts involving adolescents living in residential children's homes and group homes through caregivers' interpretations, with particular attention to the psychological meaning and relational functions of conflict. The st...

Tracking the baryon number with nuclear collisions

Baryon quantum number is found to be conserved since baryogenesis in the early Universe. Conventionally, each fractionally charged valence quark is understood to carry one-third of a baryon number. An alternative hypothesis posits that baryon number is instead carried by a baryon...

Portfolio Optimization Based on Transformer-GAN Enhanced Black–Litterman Framework for Quantitative Analysis

Portfolio optimization remains a challenging problem due to the dynamic, nonlinear, and uncertain characteristics of financial markets. Traditional portfolio construction approaches, including mean variance optimization and conventional Black–Litterman models, often suffer from i...

SIR Model with Dependent Infectivity and Death Rates

This work constructs, analyzes and simulates a new general SIR epidemiological model for the spread of a generic long-time disease, in which the coefficients of infectivity and death rate are system variables. Diseases, such as COVID-19, have demonstrated clearly that infectivity...

Detailed study of bifurcations in a rate model with excitatory and inhibitory neurons and adaptation

The dynamical behaviour of a population-based rate model with firing adaptation is studied. An excitatory and inhibitory population of neurons is recurrently coupled and a negative feedback term is added to the excitatory population as firing adaptation. In several studies of the...

Real-time anomaly detection in distributed manufacturing: a high-resolution statistical SCADA framework

Abstract Real-time anomaly detection in distributed manufacturing environments often relies on rigid timeout thresholds that may fail to identify missing workpieces or abnormal mechanical behavior until a critical failure occurs. This study presents a high-resolution, statistics-...

No gender differences in predictive processing

Abstract Statistical learning, defined as the implicit extraction of environmental regularities, is considered a fundamental cognitive mechanism that supports predictive processing across individuals, domains, and species. However, whether it is modulated by gender remains unclea...

The Role of Emotional Dependence on Partners and Friends in Relation to Problematic Use of the Internet, Smartphones, and Videogames

Abstract Emotional dependence on a partner has been found to be associated with problematic use of the internet, smartphones, and videogames. However, it has not been studied in relation to emotional dependence on friends. The present study aimed to (i) explore whether emotional...