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The cost of dual-task walking: Cognitive demands restrict gaze behaviour and gait planning

Adaptive walking relies on proactive gaze behaviour to plan foot placement and maintain stability. This study examined how mental workload and task complexity affect gaze behaviour and gait biomechanics during a precision target-stepping task in healthy young adults. We also quantified the frequency of cross-stepping during the experimental task. Twenty-three participants (18–23 years) walked along an L-shaped pathway containing raised stepping targets under single-task (ST) and dual-task (DT...

Rethinking railway sleepers: Exploring cleaner material solutions with geopolymers, acetylated wood, and recycled plastics

This study evaluates and compares the technical and environmental performance of three innovative and sus tainable railway sleeper materials: geopolymer concrete (GC), acetylated wood (AW), and recycled polymer with steel inserts (RP). The evaluation combines a technical performance assessment with a Life Cycle Assessment (LCA) based on the ReCiPe 2016 method, applied at both midpoint and endpoint levels. Key midpoint indicators include climate change, human toxicity, freshwater and terres...

Enhanced tourist flow forecasting in Aosta Valley: A novel ensemble AI framework with adaptive temporal dynamics

: Despite significant advances in tourism forecasting methods, current approaches suffer from critical limitations including static ensemble weighting mechanisms that fail to adapt to changing environmental conditions, insufficient integration of multi-source data streams, and limited robustness against sudden demand shifts caused by extreme weather or unexpected events. This study presents an innovative ensemble artificial intelligence framework for monitoring and forecasting tourist flows i...

Lode dependence incorporating the Mohr-Coulomb deviatoric section

In this paper a new Lode dependence will be formulated starting from the well known hexagonal section of the Mohr-Coulomb criterion. On the basis of a previous formulation, the new deviatoric function will provide different shapes depending on the rounding portion of curves introduced to remove the singularity of first and second derivatives in the corners of Mohr-Coulomb criterion. The resulting C2 continuous function has very simple expressions of first and second derivatives and then is ve...

Comment on “A new generalized failure criterion and its plane strain strength characteristics. Wan Z., Liu Y.-Y., Archive of Applied Mechanics 93:1699–1723 (2023)”

Wan and Liu in Arch Appl Mech 93:1699–1723, 2023 published in this journal the so-called VML criterion, a failure criterion for geomaterials. The starting point of Wan and Liu was a model by the writer (Mortara in Géotechnique) who formulated a function including the well-known criteria by Matsuoka and Nakai [7] and Lade and Duncan [5]. This paper will demonstrate how VML criterion lacks utility as it actually coincides with the formulation by Mortara [8]. Some errors in the discussed paper w...

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