University of Macedonia

Modelling Heterogeneous Dependence in a Copula‐Linked By‐Production Frontier: Evidence From French Dairy Farms

ABSTRACT In agriculture, production technologies are often characterised by non‐linearities and stochastic dependence between outputs, particularly between desirable and undesirable outputs. This paper combines the copula‐based semi‐parametric framework for modelling heterogeneou...

The effect of Russo—Ukrainian war on the aluminum stocks: an event study approach

Abstract We examine how the Russian invasion of Ukraine affected equity prices in the global aluminum industry. Using an event-study framework applied to daily stock returns of ten major aluminum producers across countries, we document heterogeneous market responses. European fir...

An Exact Continuous-Time Markov Chain Framework for Modeling and Performance Evaluation of Multi-Product Push–Pull Production Systems

Multi-product production systems require effective coordination among production, intermediate storage, downstream processing, and customer demand, particularly under stochastic operating conditions and finite capacity. Unlike existing analytical studies that mainly examine eithe...

Investigating the Relationship Between Resilience and Stress Coping Strategies Among Secondary School Teachers

This study aimed to investigate the levels of resilience and stress coping strategies among Greek secondary education teachers, examining the relationships between these two constructs and identifying the specific coping strategies that predict teachers’ resilience. The sample co...

Code and data for "Non-Stationarity Breaks Permutation Surrogates in Multi-Agent Reinforcement Learning: Diagnosis and Remedies"

Analysis code, generated data and the 100-seed sweep for the transfer-entropy null-control experiment reported in the manuscript. Includes the four-way surrogate decomposition, the equal-length window control, the stationarity diagnostics and gate enumeration, the synthetic drift...

Prediction of atrial fibrillation recurrence before catheter ablation using P-wave ECG features: simplicity of random forest versus CNN in small datasets

Atrial fibrillation (AF) is an arrhythmia affecting 3% of the general population. Transcatheter ablation (CA) is the most effective treatment option for patients with AF; however, recurrence rates remain high. Early classification of patients based on pre-ablation data could help...

A Phase-Aware Prediction-Horizon Policy for Learned-Cost CEM-MPC Lane-Change Planning

Model Predictive Control (MPC) offers a structured approach for autonomous-vehicle motion planning by optimizing predicted vehicle behavior over a finite horizon. As learning-based components become increasingly integrated into autonomous systems, interpretable interfaces between...

Development and Initial Validation of an Expressive Vocabulary Test for Movement Concepts and Skills in Adults with Down syndrome

The present study aimed to develop and psychometrically evaluate the Expressive Vocabulary Test - Movement Concepts Skills - Down syndrome (EVT-MCS-DS) and to examine possible differences in expressive vocabulary performance according to demographic characteristics, including sex...

Social Media Platforms and Computational Approaches for Analyzing Visitor Experience in Museums and Cultural Heritage Sites: A Literature Review

Social media has become an important tool for understanding visitor experiences in museums and cultural heritage sites. This literature review identifies, organizes, and thematically synthesizes existing studies on museum visitor experience based on social media data. It examines...

FTSAI Climate Risk Assessment Framework: Methodological Foundations, Analytical Architecture, and Implementation Logic

The FTSAI Climate Risk Assessment Framework (FTSAI CRAF) provides a governance-oriented methodological architecture for the structured assessment and interpretation of climate and weather-related risks across heterogeneous organisations, sectors, and decision contexts. The Framew...

FTSAI Climate Risk Assessment Framework: Methodological Foundations, Analytical Architecture, and Implementation Logic

The FTSAI Climate Risk Assessment Framework (FTSAI CRAF) provides a governance-oriented methodological architecture for the structured assessment and interpretation of climate and weather-related risks across heterogeneous organisations, sectors, and decision contexts. The Framew...

The cost of isolation. Examining the impact of workplace ostracism on employees' extra-role behaviors

Purpose Drawing from the conservation of resources (COR) theory, this study explores workplace ostracism's impact on employees' extra-role behaviors through the mediation of thriving at work and organization-based self-esteem (OBSE). Further analysis was conducted in order to exa...