CEREF: Recent submissions
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Evaluating cervical spine mobility and Fitt’s law compliance: The DidRen laser test adapted for virtual reality with age and sex effects
28 août 2024, CeREF SantéCeREF TechniqueArticle scientifiqueCervical spine mobility assessment is crucial in rehabilitation to monitor patient progress. This study introduces the DidRen VR test, a virtual reality (VR) adaptation of the conventional DidRen laser test, aimed at evaluating cervical spine mobility. We conducted a cross-sectional study involving fifty healthy participants that underwent the DidRen VR test. The satisfaction of Fitts’ law within ... -
Q-balls and charged Q-balls in a two-scalar field theory with generalized Henon-Heiles potential
30 avril 2024, CeREF TechniqueArticle scientifiqueWe construct Q-ball solutions from a model consisting of one massive scalar field ξ and one massive complex scalar field ϕ interacting via the cubic couplings g1ξϕ ϕ þ g2ξ3, typical of Henon-Heiles-like potentials. Although being formally simple, these couplings allow for Q-balls. In one spatial dimension, analytical solutions exist, either with vanishing or nonvanishing ϕ. In three spatial ... -
Hamilton, Lagrange, le chaos
15 mars 2024, CeREF SantéAutreConférence donnée au Séminaires Sandwich de l'UMONS, le 20/02/24 Consultable en ligne : https://www.youtube.com/watch?v=jrdfvWcXOrg -
Evaluating the additive diagnostic value of DidRen LaserTest: Correlating temporal and kinematic predictors and patient-reported outcome measures in acute-subacute non-specific neck pain
12 mars 2024, CeREF SantéArticle scientifiqueThis study aims to investigate the relationships between altered kinematic parameters, as assessed by the DidRen laser test, and PROMs. Using a multivariate logistic regression (LR) model, we sought to identify the best predictors for discriminating ANSP patients from HCP. We hypothesized that the DidRen laser test would reveal different relationships between kinematic parameters and PROMs ... -
Hamilton, Lagrange, le chaos. Cette Mécanique dans nos mouvements.
20 février 2024, CeREF SantéAutreLa compréhension des principes fondamentaux régissant les mouvements observés dans la Nature est un objectif fondamental de la science. Après les travaux pionniers de Newton (1643-1727), la Mécanique a considérablement évolué grâce aux reformulations de Lagrange (1736-1813) et de Hamilton (1805-1865). En invoquant un principe de moindre action, Lagrange a remplacé l'équation de Newton par la recherche ... -
Occupational Risk Factors for Musculoskeletal Disorders among Workers in Dairy Diversification
11 janvier 2024, CeREF SantéArticle scientifiqueAbstract Background: In a changing European agricultural context, diversification of dairy farms is gaining attention. This study seeks to (1) assess musculoskeletal pain prevalence associated with tasks such as butter, yogurt, and cheese production; and (2) analyze associated risks. Methods: Observing 31, mostly female, workers, we utilized the ERGOROM questionnaire, a methodology adapted from ... -
Intégrer le numérique dans la discipline du français : exemples raisonnés de pratiques enseignantes
10 mai 2023, CeREF EducationArticle scientifiqueAu XXIe siècle, le numérique tient une place importante dans l’enseignement. En Belgique francophone, une plateforme de ressources didactiques accompagne les enseignants dans le développement des compétences numériques en littératie. Nous examinons la place laissée à la littérature numérique sur cette plateforme et les ressources qu’elle propose. Enfin, nous décrivons comment ces dernières pourraient ... -
Diffusion in Phase Space as a Tool to Assess Variability of Vertical Centre-of-Mass Motion during Long-Range Walking
06 février 2023, CeREF SantéCeREF TechniqueArticle scientifiqueWhen a Hamiltonian system undergoes a stochastic, time-dependent anharmonic perturbation, the values of its adiabatic invariants as a function of time follow a distribution whose shape obeys a Fokker–Planck equation. The effective dynamics of the body’s centre-of-mass during human walking is expected to represent such a stochastically perturbed dynamical system. By studying, in phase space, the ... -
Compte rendu de P. Galluzzi, «Galileo, Rosmini, Darwin : triumviri del cattolicesimo riformatore (1870-1918)»
Article scientifiqueCompte rendu de P. Galluzzi, «Galileo, Rosmini, Darwin : triumviri del cattolicesimo riformatore (1870-1918)», in Rivista di filosofia, vol. 113, 2022, n°3, pp. 489-495. -
Wearable Sensors Applied in Movement Analysis
30 novembre 2022, CeREF TechniqueLivre/Ouvrage ou monographieRecent advances in electronics have led to sensors whose sizes and weights are such that they can be placed on living systems without impairing their natural motion and habits. They may be worn on the body as accessories or as part of the clothing and enable personalized mobile information processing. Wearable sensors open the way for a nonintrusive and continuous monitoring of body orientation, ... -
ZN-balls: Solitons from ZN-symmetric scalar field theory
28 novembre 2022, CeREF TechniqueArticle scientifiqueWe discuss the conditions under which static, finite-energy, configurations of a complex scalar field ϕ with constant phase and spherically-symmetric norm exist in a potential of the form V(ϕ*ϕ, ϕ^N, ϕ^*N) with N ∈ N and N ≥ 2, i.e., a potential with a ZN-symmetry. Such configurations are called ZN-balls. We build explicit solutions in (3 + 1)-dimensions from a model mimicking effective field ... -
Wearable Sensors Applied in Movement Analysis
27 octobre 2022, CeREF TechniqueArticle scientifiqueEditorial de la Special Issue de Sensors, Wearable Sensors Applied in Movement Analysis. -
Compte rendu de W. R. Shea : «Ce que Galilée dit à Milton : dialogue entre le savant et le poète»
RapportStoffel (Jean-François), Compte rendu de W. R. Shea, « Ce que Galilée dit à Milton : dialogue entre le savant et le poète », in Revue des questions scientifiques, vol. 193, 2022, n°1-2, pp. 212-214. -
Machine Learning Identifies Chronic Low Back Pain Patients from an Instrumented Trunk Bending and Return Test
03 juillet 2022, CeREF TechniqueArticle scientifiqueNowadays, the better assessment of low back pain (LBP) is an important challenge, as it is the leading musculoskeletal condition worldwide in terms of years of disability. The objective of this study was to evaluate the relevance of various machine learning (ML) algorithms and Sample Entropy (SampEn), which assesses the complexity of motion variability in identifying the condition of low back pain. ... -
Compte rendu de : "Mee (Nicholas), Celestial Tapestry : The Warp and Weft of Art and Mathematics"
2022, HE Louvain en HainautRapportIl s'agit du compte rendu du livre : "Mee (Nicholas), Celestial Tapestry : The Warp and Weft of Art and Mathematics. – Ox ford : Oxford University Press, 2020. – 325 p. – 1 vol. broché de 20 × 13 cm. – 16,99 £. – isbn 978-0-19-885195-0". -
Compte rendu de J. Reisse : «Averroès, Copernic, Bruno et Galilée : raison, croyances et pouvoirs religieux»
RapportStoffel (Jean-François), Compte rendu de J. Reisse, « Averroès, Copernic, Bruno et Galilée : raison, croyances et pouvoirs religieux », in Revue des questions scientifiques, vol. 193, 2022, n°1-2, pp. 230-232. -
ZN-balls: Existence and application to Yang-Mills plasma
02 juin 2022, CeREF TechniqueAutreConférence donnée à "Exact solutions in classical field theory: Solitons, black holes and bosons stars – Workshop en l’honneur de Yves Brihaye", UMONS, 2-3 juin 2022. https://web.umons.ac.be/pucg/event/workshop-en-lhonneur-de-yves-brihaye/ -
Many-Quark Interactions: Large-N Scaling and Contribution to Baryon Masses
31 mai 2022, CeREF TechniqueArticle scientifiqueStarting from an effective Hamiltonian modeling, of a baryon made of N identical quarks in the large-N approach of QCD, we obtain analytical formulas, allowing to estimate the contributions of multiquark interactions to the baryon mass. The cases of vanishing (mass spectrum) and nonvanishing (baryon melting) temperatures are treated. -
Comparaison de la rigidité d’un nouveau type de benne par rapport à ceux existant
04 mars 2022, CeREF TechniqueActe de conférence ou de colloqueLa chute d’une semi-remorque basculante (appelée benne par la suite) est un accident courant dans le milieu de la construction à cause de nombreux facteurs tels que la non-horizontalité du camion, un sol trop meuble ou un déséquilibre de la charge dans la benne. D’une façon générale, si le chargement d’une benne est fortement asymétrique, son déchargement engendrera le déplacement du centre de gravité ... -
Head Pitch Angular Velocity Discriminates (Sub-)Acute Neck Pain Patients and Controls Assessed with the DidRen Laser Test
06 avril 2022, CeREF TechniqueArticle scientifiqueUnderstanding neck pain is an important societal issue. Kinematic data from sensors may help to gain insight into the pathophysiological mechanisms associated with neck pain through a quantitative sensorimotor assessment of one patient. The objective of this study was to evaluate the potential usefulness of artificial intelligence with several machine learning (ML) algorithms in assessing neck ...
