Research works

New Interpretable Framework for Clustering Spatial Hydrogeochemical Data and Assessing Groundwater Quality and Chemical Evolution Factors: A Topological Synthesis Approach

This study proposes a new method for the topological synthesis of principal component projections and hydrogeochemical stoichiometric equality lines on self-organizing map (SOM) component planes to assess groundwater chemistry forming factors and quality in the Pleistocene unconf...

Guest-host approach to reduce driving voltages in electro optic liquid crystal devices

We describe a simple guest-host approach allowing the reduction of driving voltages in liquid crystal (LC) electro optic devices via the increase of the effective dielectric anisotropy. This is achieved by doping the nematic LC host by molecules possessing high dipole moments. Po...

Primary Tracheal Leiomyoma in a Dog: A Case Report

Primary tracheal neoplasia is uncommon in domestic animals and humans, and most reported tracheal tumors are malignant. To the authors’ knowledge, this case represents the third confirmed tracheal leiomyoma reported in dogs. Similarly, in human medicine, tracheal leiomyomas have...

Digital Transformation, Artificial Intelligence, and Crisis Response Outcomes in European Public Administration: A Systematic Review and Future Research Agenda

The rising number and the complexity of crises in Europe, including the COVID-19 pandemic, migration, and cybersecurity threats, have accelerated the adoption of digital transformation and artificial intelligence (AI) in public administration. This paper is a systematic literatur...

Quantifying the “Mechanicalness” of Autonomous Trajectory Tracking: A Real-Vehicle Comparison with Human Drivers

Autonomous driving systems often exhibit trajectory tracking behavior that differs markedly from human drivers, a phenomenon intuitively described as "mechanicalness.'' This study moves beyond the traditional focus on tracking accuracy to systematically analyze these behavioral d...

Language- and Activity-Specific Associations Between English and Chinese Home Literacy Activities and Receptive Vocabulary Among Chinese–Canadian Children: A Repeated Cross-Sectional Study

This repeated cross-sectional study examined how English and Chinese home literacy activities were associated with receptive vocabulary among Chinese–English bilingual children in British Columbia, Canada. The study included 123 children in Grade 1 and 126 children in Grade 2. Ch...

Design and Validation of a Multimodal AI Conversational System for Automated Travel Itinerary Generation and Promotional Video Synthesis

The manual creation of personalized travel itineraries remains a labor-intensive process that requires travel agents to consolidate heterogeneous information from multiple sources, including natural language interactions, booking confirmations, screenshots, and reservation docume...

An Effective Toy Model Inspired by the Gluon Mass Gap via β-Vacuum

We present a non-perturbative toy model with an infrared mass scale inspired by QCD, valid for Euclidean momenta Q ≤ m_gap. The β-Vacuum is defined by the Lagrangian Lβ = β/4 (∂μΦᵃ ∂ᵐΦᵃ)² + α/2 Φᵃ □² Φᵃ + m₀²/2 Φᵃ Φᵃ with a = 1,...,8. We prove strict monotonicity of the associate...

A Bibliometric Analysis of Digital Citizenship Education and Competences for Democratic Culture: Global Trends, Knowledge Structure, and Future Research Agenda

Background The increasing integration of digital technology into education has raised concerns about students’ ability to participate responsibly in a digital society, highlighting the importance of Digital Citizenship Education (DCE) in strengthening Competencies for a Democrati...

Machine Learning for Autism Spectrum Disorder Prediction: A Review of Data Augmentation and Feature Selection Techniques

ABSTRACT Autism spectrum disorder (ASD) is a complex neurodevelopmental condition characterized by persistent difficulties in social communication, social interaction, and repetitive behaviors. Early and accurate diagnosis is essential but is often hindered by subjective clinical...

Comparison of microdrop administration using a bottle adapter of 2.5% phenylephrine and 0.8% tropicamide with standard drop for ROP examination: a randomized controlled noninferiority trial

Abstract Background Pharmacologic mydriasis is essential for retinopathy of prematurity (ROP) screening; however, conventional ophthalmic drops substantially exceed neonatal tear film capacity, leading to systemic absorption and potential adverse effects. Microdrop administration...

You don’t look sick: Invisible disability, moral injury, and organisational betrayal on the retail front-line

This article examines how the gap between invisible impairment and formal recognition shapes employment experiences. We draw on Jordan’s account as a front-line retail worker in Germany living with a chronic kidney condition that significantly affects work capacity but falls belo...

A longitudinal study on differential impacts of the COVID-19 pandemic and normalized prevention and control on overweight and obese adolescents in China

Abstract Objective To investigate the impact of the coronavirus disease 2019 (COVID-19) pandemic and its normalized prevention and control phase on the body mass index (BMI) and prevalence of overweight and obesity among adolescents aged 13–18 years in China, providing a basis fo...

Spacetime-Quantum Unified-Field Theory: Axiomatic Foundation, Emergent Gravity, Planck-Scale Corrections, and Consistency with the Standard Model

Spacetime-quantum unified-field theory, built on six axioms: discrete spacetime structure, spacetime-quantum coherence, energy–spacetime coupling, Lorentz covariance, hierarchical symmetry breaking, and gravity emergence. Starting strictly from these axioms, the manuscript constr...

Collective Bargaining in Germany: Trends and Challenges

ABSTRACT This paper examines the evolution, institutional structure, and challenges of collective bargaining in Germany. Collective bargaining addresses labor market imperfections, redistributes productivity gains, and shapes working conditions. Germany's system centers on indust...

The start of acoustic research at Chalmers University of Technology

At the beginning of the 20th century building acoustics developed from a more empirical field to a fully developed sub-discipline in acoustics. This was supported by the development of measurement techniques required for carrying out laboratory and field measurements and by peopl...

Undesired body orientations in competitive pedestrian evacuations

We report time-resolved experimental measurements of human body orientation in extremely dense crowds during highly competitive evacuations. By comparing different scenarios, we find that as competitiveness increases and contact forces among pedestrians build up, orientational or...

Hidden Sources of Bias in Mineral Resource Databases: Common Issues and Consequences

Poorly governed geoscience databases introduce subtle but systematic biases that propagate through mineral resource estimation workflows, distorting grade continuity and resource classification. While the importance of data quality in mining is widely acknowledged, quantitative d...

Comparative metabolomic profiling reveals salinity tolerance mechanisms in a rice introgression line

Abstract Introduction Rice ( Oryza sativa ) is extremely sensitive to salinity, yet the metabolic mechanisms underlying salt tolerance remains incompletely understood. Objective In this study, we performed leaf tissue-specific untargeted metabolomic profiling of the salt-tolerant...

A Machine-Learning-Based Public Market Equivalent Framework for Estimating Default Risk in Private Credit

In this article, the authors introduce a public market equivalent framework to estimate default risk for private firms when financial statement fundamentals are unavailable or stale. The approach learns a supervised similarity metric from publicly traded corporate bond (from both...