Publications

• Article dans une revue

Sequential construction and dimension reduction of Gaussian processes under constraints

François Bachoc, Andrés F. López-Lopera, Olivier Roustant

Accounting for inequality constraints, such as boundedness, monotonicity or convexity, is challenging when modeling costly-to-evaluate black box functions. In this regard, finite-dimensional Gaussian process (GP) regression models bring a valuable solution, as they guarantee that the inequality…

SIAM Journal on Mathematics of Data Science, 2022, 4 (2), pp.772-800. ⟨10.1137/21M1407513⟩. ⟨hal-03614303⟩

• Article dans une revue

Young Ceramists in the Spotlight

Erkka Frankberg, Andraž Kojcan, Marie Lasgorceix, Antonia Ressler, Nicolas Somers, Laura Katariina Tianien, María Canillas Pérez

The Young Ceramists Network (YCN) was established by the European Ceramic Society (ECerS) to build a platform to promote the networking between young researchers and professionals that are active in the ceramic-related fields worldwide from academia to the industrial sector. With the help of the…

Open Ceramics, 2022, 10, 1 p. ⟨10.1016/j.oceram.2022.100271⟩. ⟨hal-04313364⟩

• Article dans une revue

Study of structural, impedance spectroscopy and dielectric properties of Li and Al co-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 ceramics

Naima Zidi, Ahcène Chaouchi, Mohamed Rguiti, Yannick Lorgouilloux, Christian Courtois

In this work, we investigate the effect of lithium and aluminium co-doping (0, 0.1, 0.2, and 0.3 mol%) on the phase formation, microstructure, dielectric, and electrical properties of (Ba0.85Ca0.15) (Ti0.90Zr0.10)O3 ceramics prepared by solid state reaction method. Rietveld refinement of X-ray…

Journal of Materials Science: Materials in Electronics, 2022, 33 (18), pp.14468-14487. ⟨10.1007/s10854-022-08369-5⟩. ⟨hal-03703115⟩

• Article dans une revue

Role of polarization signals effects of electrostrictive polymers in the energy harvesting

A. Benbella, I. Matrane, A. Eddiai, M. Meddad, M. Rguiti, M. Mazroui

In the last decades, research into the electrostrictive ploymers as promising materials for energy harvesting using its ability to convert mechanical to electrical energy is beginning to reveal its potential for this application. These materials exhibit a strong electro-mechanical coupling and are…

Materials Today: Proceedings, 2022, ⟨10.1016/j.matpr.2022.05.474⟩. ⟨hal-03703102⟩

• Article dans une revue

Design and numerical simulation of a piezoelectric harvester using PVDF polymer for keyboard application

Madiha Yessari, Najoua Fangachi, Mohamed Rguiti, Abdelowahed Hajjaji

Finding new energy sources has received in recent years a particular interest among scientists. Our research focuses on the generation of micro-renewable energy. This energy is used to power various wireless devices, such as sensors, actuators and micro-electromechanical systems (MEMS). In this…

Materials Today: Proceedings, 2022, 66, pp.365 - 372. ⟨10.1016/j.matpr.2022.05.545⟩. ⟨hal-03703093⟩

• Poster de conférence

Green and Scalable Synthesis of UiO-66-SO3H Metal-Organic Framework and its Catalytic Activity in Dehydration of Fructose

Bakytzhan Yeskendir, Priscilla Magalhaes de Souza, Robert Wojcieszak, Jeremy Dhainaut, Jean-Philippe Dacquin, Yannick Lorgouilloux, Christian Courtois, Sebastien Royer

French Conference on Catalysis (FCCAT), May 2022, Ronce-les-Bains, France. . ⟨hal-04290940⟩

• Poster de conférence

Isomorphous Substitution of Al by Zr in ZSM-5 zeolite: Approaches in Characterization of Surface Species

Pardis Simon, Nicolas Nuns, Herve Vezin, Yannick Lorgouilloux, Christian Courtois, Sebastien Royer, Jean-Philippe Dacquin, Jeremy Dhainaut

European Association on Applications of Surface and Interface Analysis - ECASIA 2022, May 2022, Limerick, Ireland. ⟨hal-04291675⟩

• HDR

Quelques contributions à l'arithmétique des corps et des polynômes, Some contributions to the arithmetic of fields and polynomials

Salah Najib

Le but principal de ce mémoire d'Habilitation à diriger des recherches (HDR) est de donner une synthèse de mes travaux scientifiques. Je commence cette synthèse par présenter mes résultats de thèse de doctorat (2005) qui concernent en particulier, la décomposition et le spectre d'un…, The main purpose of this HDR thesis is to provide a summary of my scientific work. I begin this synthesis by presenting my doctoral thesis results (2005) wich concern, in particular, the decomposition and the spectrum of a polynomial with coefficients in a commutative field. Then I present my…

Mathématiques [math]. Université Polytechnique Hauts-de-France, 2022. ⟨tel-04026606⟩

• Communication dans un congrès

Green and Scalable Synthesis of UiO-66-SO3H Metal-Organic Framework and its Catalytic Activity in Dehydration of Fructose

Bakytzhan Yeskendir, Priscilla Magalhaes de Souza, Robert Wojcieszak, Jeremy Dhainaut, Jean-Philippe Dacquin, Yannick Lorgouilloux, Christian Courtois, Sebastien Royer

International Symposium on Green Chemistry (ISGC), May 2022, La Rochelle, France. ⟨hal-04158496⟩

• Communication dans un congrès

Développement d'une technique de projection avec modes homotopiques pour le calcul des solutions propres complexes

Jérémy Sadet, Franck Massa, Thierry Tison, Isabelle Turpin, Bertrand Lallemand, El-Ghazali Talbi

15ème colloque national en calcul des structures, Université Polytechnique Hauts-de-France [UPHF], May 2022, Hyères-les-Palmiers, France. ⟨hal-03717606⟩