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Affichage de 1041 à 1050 sur 6567

Article dans une revue

Affine hypersurfaces with constant sectional curvature

Miroslava Antić, Haizhong Li, Luc Vrancken, Xianfeng Wang

We use a new approach to study locally strongly convex hypersurfaces with constant sectional curvature in the affine space (Formula presented). We prove a nice relation involving the eigenvalues of the shape operator S and the difference tensor K of the affine hypersurface. This is achieved by…

Pacific Journal of Mathematics, 2021, 310 (2), pp.275-302. ⟨10.2140/pjm.2021.310.275⟩. ⟨hal-03722534⟩

Article dans une revue

Mechanical Properties of Spark Plasma Sintering-Processed Pure Ti and Ti-6Al-4V Alloys: A Comparative Study between Harmonic and Non-Harmonic Microstructures

Tarik Sadat, Kyohei Hayashi, Grégory Haugou, Hervé Morvan, Eric Markiewicz, Laurent Dubar, Maxence Bigerelle, Kei Ameyama, Guy Dirras

Microstructure characteristics and compressive property relationships of so-called harmonic (composed by fine and coarse grains) and conventional pure titanium (Ti) and Ti-6Al-4V alloy processed by powder metallurgy route are presented in the present work. Electron backscatter diffraction (EBSD)…

Compounds, 2021, 1 (1), pp.41-57. ⟨10.3390/compounds1010005⟩. ⟨hal-03447149⟩

Article dans une revue

Qualitative and Quantitative Analyses of Surface Alterations of Stone Tools Made of Raw Materials from the Carpathian Basin

Antony Borel, Raphaël Deltombe, Julie Marteau, Philippe Moreau, Maxence Bigerelle, György Lengyel, Zsolt Mester

Wear analysis performed on archaeological stone tools from prehistory aims at characterizing their surface alterations in order to determine their functions and describe past human technical behaviors. However, the reliability and repeatability of the method is questioned and there is a major…

Hungarian Archaeology, 2021, 10 (3), pp.1-11. ⟨10.36338/ha.2021.3.4⟩. ⟨hal-03533967⟩

Article dans une revue

Adaptative vital signs monitoring system based on the early warning score approach in smart hospital context

Imen Ben Ida, Moez Balti, Sondès Chaabane, Abderrazak Jemai

Changes in vital signs are an important indicator of physiological decline and provide opportunities for early recognition and intervention. The collected vital signs data can be evaluated using several approaches such as the Early warning score (EWS) approach to predict the risk level of patients…

IET Smart Cities, 2021, 3 (1), pp.16-28. ⟨10.1049/SMC2.12004⟩. ⟨hal-03424502⟩

Article dans une revue

Evaluation of risk factors for fall in elderly using Bayesian networks: A case study

Gulshan Sihag, Véronique Delcroix, Emmanuelle Grislin-Le Strugeon, Xavier Siebert, Sylvain Piechowiak, Cédric Gaxatte, François Puisieux

Background: Falls in the elderly are the number one cause of traumatic death in this population. Prevention of falls requires to evaluate which risk factors for fall are present for a person on the basis of available health information. Our objective is to predict the presence or the absence of 12…

Computer Methods and Programs in Biomedicine Update, 2021, 1, pp.100035. ⟨10.1016/j.cmpbup.2021.100035⟩. ⟨hal-03528102⟩

Article dans une revue

Submental Anatomical Variations: The Uniqueness of a Common Variation

Laísa Caldas Fernandes, Patricia Shirley de Almeida Prado

Introduction: submental region is subject to many variations, predominantly affecting the anterior belly of the digastric muscle. The medical importance of this area led us to compile a database with the reported cases of the anomalous belly of the anterior belly of the digastric muscle as well as…

Journal of Morphological Sciences, 2021, 38, pp.100-108. ⟨10.51929/jms.38.19.2021⟩. ⟨hal-03711650⟩

Article dans une revue

Generating new classes of fixed-time stable systems with predefined upper bound for the settling time

Rodrigo Aldana-Lopez, David Gomez-Gutierrez, Esteban Jiménez-Rodríguez, Juan Diego Sanchez-Torres, Michael Defoort

This paper aims to provide a methodology for generating autonomous and non-autonomous systems with a fixed-time stable equilibrium point where an Upper Bound of the Settling Time (UBST) is set a priori as a parameter of the system. Furthermore, some conditions for such an upper bound to be the…

International Journal of Control, 2021, pp.1-13. ⟨10.1080/00207179.2021.1936190⟩. ⟨hal-03716501⟩

Article dans une revue

Piezoelectric and Electromechanical Characteristics of Porous Poly(Ethylene-co-Vinyl Acetate) Copolymer Films for Smart Sensors and Mechanical Energy Harvesting Applications

Chouaib Ennawaoui, Abdelowahed Hajjaji, Cédric Samuel, Erroumayssae Sabani, Abdelkader Rjafallah, Ikrame Najihi, El Mehdi Laadissi, El Mehdi Loualid, Mohamed Rguiti, Abdessamad El Ballouti, Azeddine Azim

This paper investigates energy harvesting performances of porous piezoelectric polymer films to collect electrical energy from vibrations and power various sensors. The influence of void content on the elastic matrix, dielectric, electrical, and mechanical properties of porous piezoelectric polymer…

Applied System Innovation, 2021, 4 (3), pp.57. ⟨10.3390/asi4030057⟩. ⟨hal-03703173⟩

Rapport

Tactical capacity planning in an integrated multi-stakeholder freight transportation system

Taherkhani Gita, Ioana Bilegan, Teodor Gabriel Crainic, Michel Gendreau, Rei Walter

This study focuses on investigating tactical planning of an integrated multi-stakeholder system. The system receives time-dependent requests from carriers and shippers and optimizes in time and space the operations and transportation activities through consolidation of loads of different shippers…

[Research Report] 34, Centre interuniversitaire de recherche sur les reseaux d'entreprise, la logistique et le transport (CIRRELT). 2021. ⟨hal-03391635⟩

Article dans une revue

Robust Automatic Modulation Recognition Through Joint Contribution of Hand-Crafted and Contextual Features

Bachir Jdid, Wei Hong Lim, Iyad Dayoub, Kais Hassan, Mohd Rizon Bin Mohamed Juhari

Automatic modulation recognition (AMR) has become increasingly important in the field of signal processing, especially with the advancements of intelligent communication systems. Deep Learning (DL) technologies have been incorporated into the AMR field and they have shown outstanding performances…

IEEE Access, 2021, 9, pp.104530-104546. ⟨10.1109/ACCESS.2021.3099222⟩. ⟨hal-03382822⟩