Tind Technologies (Norway)
Hes-so: ArODES Open Archive (University of Applied Sciences and Arts Western Switzerland / Haute école spécialisée de Suisse occidentale / FH Westschweiz)Not a member yet
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Fiche d’information ::Indicateurs de qualité médicaux « Mesures limitant la liberté de mouvement » pour les soins stationnaires de longue durée
No full textSoins aigus et de transition ::analyse comparative entre cinq cantons
No full textLes soins aigus et de transition (SAT) ont été introduits en 2011 par un article de loi dans la Loi fédérale sur l’assurance-maladie (LAMal). Il stipule que l’assurance obligatoire des soins rému¬nère ces soins nécessaires à la suite d’un séjour hospitalier pour une période de 14 jours. Dans un contexte de vieillissement de la population et de surcharge des hôpitaux, cette prestation semble indispensable. Cependant, en pratique, le recours aux SAT reste faible et parfois même inexistant dans certains cantons. Cet article compare la mise en oeuvre des SAT dans cinq cantons suisses afin de comprendre les raisons de cette faible utilisation, ainsi que les divergences liées aux marges de manoeuvre canto¬nales. Il examine les régulations cantonales, le recours à ce type de soin et les institutions proposant cette prestation.Acute and transitional care was introduced in 2011 by an article in the Federal Health Insurance Act. This provision of the law stipulates that mandatory health insurance covers these necessary post-hospitalization care services for a period of 14 days. In the context of an aging population and hospital overload, these care services seem essential to maintain the health of the population. However, in practice, the use of acute and transitional care remains low and sometimes even absent in certain cantons. This article compares the implementation of acute and transitional care in five Swiss cantons to understand the reasons for this low utilization, as well as the differences related to cantonal leeway. It examines cantonal regulations, the use of this type of care, and the institutions offering this service
Granularity level exploration ::an analysis on correlations between presence and energy loads
No full textOccupancy monitoring techniques raise questions regarding trade-offs between anonymity and accuracy. Building on a rich multi-dimensional dataset, this study explores the correlations between occupancy and energy consumption at different levels, from whole rooms to individual plugs. Data aggregation of individual plugs in zones, either according to their location or their specific functional use, has been evaluated. Confirming previous studies, room level presence proved to be strongly correlated with, in order, total plugs consumption, whole room power consumption, and lighting use. A binary presence classification using Random Forest on energy features was conducted also at room level, and showed good results. The same algorithm for a three-classes categorization of room occupancy showed acceptable results despite lower accuracy. Overall, the analysis proved that a level of granularity preserving anonymity might be sufficient and should be considered depending on the needs for occupancy information in order to reduce energy consumption
Retrofitting soil-steel composite bridges with textile reinforced mortar
No full textSoil Steel Composite Bridges (SSCB) are buried structures relying on the structural collaboration of corrugated steel plates (CSP) and engineered soil and have been in use since the end of the 19th century. Lacking regular maintenance (partially due to their frequently modest spans), many SSCB show significant corrosion issues but require service life extension. The presented research explored the potential of retrofitting SSCB with a thin layer of textile-reinforced mortar (TRM), offering the necessary strengthening and corrosion protection, in addition to not overly affecting the SSCB’s clearance (compared to other retrofitting methods). Two typical circular SSCB shapes with 1.5 m and 3.5 m diameter, respectively, and standard CSP profiles were evaluated. The assumed soil cover depths vary between 0.6 m and 3.0 m. The comprehensive project encompassed full-scale load tests as well as numerical simulations, aiming at identifying key parameters in the structural response of retrofitted elements, such as the influence of normal force (or effects of soil cover, respectively) and sensitivity to flexural stiffness. These experimental and theoretical evaluations resulted in a practice-oriented approach to design the retrofitting of SSCB with thin TRM layers. This paper discusses the main results from experimental evaluations
Actes des journées Rebecca Clarke, 4, 17, 18, 24 octobre 2022 ::dans le cadre du projet HEMU ClarkeSources
No full textL’organisation des « Journées Rebecca Clarke » marque la première étape du projet ClarkeSources. Cette journée d’études s’est adressée à une sélection d’étudiantes et étudiants des classes d’alto, de piano et de violoncelle e l’HEMU. L’objectif était de confronter les jeunes interprètes à l’enjeu central du projet ClarkeSources, soit l’étude comparative des manuscrits et des partitions éditées des œuvres avec alto de Clarke. Ainsi, leur apprentissage de ce répertoire – qui a abouti à un concert public - s’est mené parallèlement à un travail de confrontation et d’analyse des sources disponibles. Ce parcours a été enrichi par des master classes avec Vinciane Béranger et des conférences et interventions de musiciens et musicologues spécialistes de l’étude d’esquisses et fins connaisseurs du travail de Rebecca Clarke (Anna Stoll Knecht, Christopher Johnson, Toby Appel). Ces Actes restituent l’importance de cette démarche pédagogique dans le processus de recherche du projet ClarkeSources et synthétisent le contenu des conférences et interventions de nos invités dans quatre articles qui permettent au lecteur de se familiariser avec la musique et la personnalité de Rebecca Clarke
Mesh anchorage in textile reinforced mortar ::development of a srtuctural design model
No full textAmong emerging strengthening methods, the use of thin layers of textile reinforced mortar (TRM) gains more and more attention. One of the structural design challenges of TRM is a resistance model for anchorage (or lap splice) by bond of the textile mesh, made of carbon, basalt or glass fiber yarns, in the mortar matrix. As the materials behave largely elastically up to rupture and show variability, the anchorage capacity may also be affected by the mesh width. Based on an experimental study and data from literature, the parameters of an existing bond model for single yarns were calibrated and applied in a non-linear serial and parallel spring model to retrace displacements of pull-out tests on entire meshes. A pull-outstrength model is derived, showing satisfactory accuracy and reliability, allowing recommendations for practical structural design of textile anchorage in TRM by bond
Semi-empirical prediction of mechanical properties of recycled aggregate concrete
No full textThe use of recycled concrete aggregates (RCA) is gaining increasing interest as it promotes more sustainable construction practices by reducing landfill waste and preserving natural resources. However, incorporating RCA affects key mechanical properties such as compressive strength and elastic modulus. This study proposes a semi-empirical approach to predict these properties by adapting existing models. Bolomey’s formula for compressive strength and the Swiss code SIA 262 expression for elastic modulus were modified to account for RCA incorporation. Additionally, the Maxwell model was applied by separating RCA into two phases: the original natural aggregate and the residual mortar attached. Laboratory experimentation on 33 concrete mixes with RCA contents ranging from 25% to 95% produced an internal dataset, which was supplemented with data from the literature to build a robust database for refining and validating these models. The modified Bolomey’s formula successfully predicted compressive strength with a coefficient of variation (COV) below 10% and an average experimental-to-estimated ratio of 1. Similarly, the modified SIA 262 expression for elastic modulus yielded a COV of approximately 5% and an average experimental-to-estimated ratio very close to 1. The Maxwell model enables a more detailed prediction of the elastic modulus. Despite some variability attributed to the assumptions regarding the residual mortar estimation and aggregate equivalencies, the model demonstrated good predictive accuracy, with a COV of less than 10% and an experimental-to-estimated ratio of 0.99. Overall, the results indicate that well calibrated semi-empirical models can effectively capture the complex behaviour of RCA across various replacement ratios and mix designs. Improving the reliability of these predictive tools facilitates the broader adoption of RCA in structural applications, thereby supporting material reuse and resource efficiency
Best practice in PCB design with experimental validation of a 50 A-120 V converter for low-voltage propulsion and energy applications
No full textLow-voltage power converters in the 25–200 V range are increasingly employed in emerging applications such as hybrid electric vehicles (HEVs), photovoltaic systems with battery storage, and electric propulsion systems for recreational boats. In these contexts, 48 V battery systems have become standard, due to safety considerations. Among various converter topologies, H-bridge configurations operating around 100 V DC are widely used in laboratory-scale prototyping. While MOSFETs are the preferred switching devices in this voltage range, due to their high efficiency and fast switching characteristics, they also introduce design challenges related to high current slew rates and associated overvoltage spikes caused by parasitic inductances in the PCB layout. These overvoltages, though modest in absolute terms, can be critical in low-voltage systems, due to the lower device ratings. This paper presents design strategies and layout best practice for a 120 V, 50 A H-bridge converter using 200 V rated MOSFETs. The effectiveness of various mitigation techniques—including the use of ceramic capacitors in parallel with film and electrolytic types, Schottky diodes across MOSFETs, and snubber circuits—is evaluated and experimentally validated on a dedicated prototype. The results highlight the critical role of PCB design in ensuring switching reliability and device protection in low-voltage converter systems. In addition, with the design solutions shown in this study, it was possible to obtain a voltage overshoot during switching of just 165 V with a 120 V DC-link voltage, which guarantees a sufficient safety margin for the MOSFET rated voltage
Conceptual links between the Ewald‐Oseen extinction theorem and return stroke modeling
No full textObservations and theoretical principles indicate that electromagnetic waves, including light, propagate more slowly in dielectric media than in a vacuum. This behavior is elegantly described by Maxwell's equations, which account for material-specific permittivity and permeability. According to the principle of superposition, the net electromagnetic wave within a dielectric medium results from the combination of the incident wave and secondary waves generated by the medium's interaction with the incident wave. Notably, both the incident wave and the secondary waves propagate at the speed of light in a vacuum. The Ewald-Oseen extinction theorem explains that secondary waves, emitted by atoms in the dielectric medium, interfere with the incident wave in such a way that they cancel the original wave and produce a resultant wave propagating at a reduced speed determined by the dielectric constant of the medium. In this paper, we extend the application of the Ewald-Oseen theorem to electromagnetic wave propagation in transmission lines and demonstrate that the principles used to model lightning return strokes align closely with those predicted by the theorem
Greener synthesis of a potent proteolysis targeting chimera (PROTAC) degrader of indoleamine-2, 3-dioxygenase 1 (hDOI1)
No full textThe synthesis of the potential indoleamine-2, 3-dioxygenase 1 (IDO1) degrader proteolysis-targeting chimeras (PROTAC) using sustainable reagents and technologies such as ionic liquids and photochemical couplings was investigated. The ligand to the protein of interest, an indole derivative, was synthesized successfully for three substrates bearing different substituents (NO2, (CF3)2 and H) over three steps with good to satisfactory results with overall yields ranging from 21 to 71%. However, the coupling with the ubiquitin ligase, pomalidomide, was unsuccessful due to the degradation of the reactive diazoketone functional group