University of Beira Interior

Perception and Creativity Symbiosis:The Evolution of Architectural Representation from Hand-Drawing to VR

This study investigates the evolution of perception in architectural drawing, tracing the shift from hand-drawn sketches to computer-assisted techniques and immersive virtual reality. Through a comprehensive theoretical review and comparative analysis, it explores how these tools...

Lightweight Mortars Incorporating LECA, Perlite, and Crumb Rubber: Influence of SBR–PPF Modification on Material Performance

Developing lightweight cementitious materials incorporating recycled constituents while maintaining appropriate functional performance requires a balance between density, mechanical resistance, durability-related properties, and thermal efficiency. This study comparatively evalua...

Lean tools and Industry 4.0 technologies: a multidimensional analysis of firm performance

Purpose This study aims to examine how Lean/Lean Six Sigma (LSS) tools and Industry 4.0 (I4.0) technologies relate to firm performance across multiple dimensions and time horizons. Prior research has focused predominantly on productivity; the authors extend this view to profitabi...

Nanofinishing of wool and blended fabrics with TiO 2 for UV protection and photoyellowing reduction

The effectiveness of nanocrystalline titanium dioxide (TiO 2 ) (P-25) in enhancing protection against ultraviolet rays and reducing photoinduced yellowing was evaluated through its application to wool fabrics and wool blends (such as wool–polyester and wool–polyester–spandex). Th...

The impact of the dimensions of digital maturity in Industry 4.0 on the performance of industrial companies in Portugal’s Dão Lafões region

Purpose This study investigates the relationship between individual dimensions of digital maturity in the context of Industry 4.0 and financial and operational performance outcomes. Moving beyond aggregate maturity measures, the analysis adopts a dimensional perspective to captur...

From Individual Chatbot Interaction to the Virtual Tutor with Physical Presence: Comparing Educational Interaction Models with Conversational AI

Conversational artificial intelligence can provide individual study support, but the educational significance of its responses depends on how they are examined and used. We develop a conceptual framework comparing Individual Chatbot Interaction and Standard Classroom Interaction,...

Burden of sickle cell anemia among hospitalized children in Angola: a retrospective study

Chronic pediatric diseases are a growing challenge because of their impact on morbidity and healthcare resource utilization. In Angola, evidence on the hospital burden of chronic diseases, particularly sickle cell anemia (SCA), remains limited. This study compared the clinical ch...

Integrated Two-Step Membrane Chromatography for Robust and High-Throughput Plasmid DNA Purification

Plasmid DNA (pDNA) is a key raw material for advanced therapeutic modalities, including gene therapy, mRNA production, and DNA vaccination, requiring efficient and scalable downstream processing strategies. Increasing demand places stringent requirements on purification processes...

Design and Validation of a Governed Data Lakehouse Architecture for Big Data Analytics: Evidence from a Smart Port

Big Data platforms are expected to unify data engineering, governance and machine learning in one environment, and the data lakehouse has become the dominant architectural answer. Empirical evaluations on real operational data remain scarce, and those that exist tend to validate...

Virchow controversy of an unexpressed triology (II)

This paper extends and conclues the work of an previous publication by the author which reported the elements that conflued to the triad, which summarizes the causes of venous thrombosis - vein wall changes, stasis, and hypercoagulability - attributed to Virchow. In the earlier p...

LUSITANOv2: A Real-World Dataset for Fabric Defect Detection in Active Textile Production

Reliable fabric inspection is difficult to automate because production-line imagery differs substantially from the controlled samples used by many public benchmarks. This paper introduces LUSITANOv2, a high-resolution fabric-defect dataset collected at an active textile inspectio...

Beyond Risk: Revisiting Suicide Risk and Protective Factors Among LGBTQIA+ Populations and Anticipating Future Directions

Suicide research concerning lesbian, gay, bisexual, transgender, queer, intersex, asexual, and other sexually and gender-diverse (LGBTQIA+) populations has established a consistent pattern of inequity, but it has too often described disparity without adequately specifying how ris...

Adaptive emergency braking for highway safety: a simulation framework for performance and reliability evaluation

Highway safety is a critical concern for automated vehicles, particularly in dynamic and high-risk scenarios requiring precise braking and trajectory adjustments. This paper presents a comprehensive evaluation of an Automated Emergency Braking (AEB) system designed to enhance saf...

Data and R Code for "Resistance Training Dose and Inflammaging: A Systematic Review with Dose–Response Meta-Analysis of Training Volume and Relative Intensity Effects on Circulating TNF-α, IL-6, and IL-10 in Older Adults"

This repository contains the extracted data, variable derivation, and the dataset and R code used for the statistical analyses conducted in the systematic review and meta-analysis "Resistance Training Dose and Inflammaging: A Systematic Review with Dose–Response Meta-Analysis of...

Transferability of Intra- and Inter-Sectoral Coordination Between Training Tasks and Official Matches in Semi-Professional Football Players

Background: This study examined training-to-match transferability of positional coordination in semi-professional football players, comparing responses between defensive and midfield/offensive positional sectors. Methods: Twenty-nine players were monitored during the 2023–2024 se...

Optimisation of variable material orientations through design subregions for additive manufacturing of fibre composites

Abstract Additive manufacturing enables the production of structures conceived with optimal design freedom, realising the potential of conceptual gains. The design of composites with variable orientations, or variable stiffness design, holds unexplored potential for benefiting fr...

Bioelectrical Responses to Resistance Training Performed to Momentary Failure or with Repetitions in Reserve: A Within-Subject Analysis of Phase Angle and Impedance Components

Resistance training (RT) may alter tissue electrical properties, but whether proximity to momentary muscular failure influences longitudinal bioelectrical responses remains unclear. This study compared eight weeks of unilateral RT performed to failure (FAIL) or with repetitions i...

Percutaneous Retrograde Intramuscular Echo-Guided Fat Grafting (PRIME-GRAFT): A Novel Technique to Increase Safety and Improve Results

Summary: Achieving natural and dynamic body definition remains a challenge in body contouring surgery. High-definition lipoplasty has enhanced aesthetic outcomes by sculpting the superficial fat layer, and intramuscular fat grafting (IFG) has been used to improve muscle volumizat...

Family business organizational culture and the use of non-financial KPIS in management accounting and control systems

Purpose This study aims to examine how family business organizational culture functions as an informal control mechanism shaping the configuration, strategic alignment and perceived usefulness of management accounting and control systems (MACS), with particular emphasis on the us...

Loneliness as a Pathway from Social Isolation to Psychological Distress: A Cross-Sectional Mediation Study in Portuguese Adults

Social disconnection has become a public-health concern, but it remains unclear whether mental-health symptoms are more closely related to limited social contact or to the subjective experience of loneliness. This cross-sectional study examined 632 self-selected adults living in...