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Meryem ENNAJI · Raphael CHATTOT (ORCID: 0000-0001-6169-530X) · Andrea BARICCI · Laure GUETAZ · y 4 más
We aim to elucidate the relationship between oxidation state and stability of electrocatalyst for automotive proton exchange membrane fuel cells (PEMFCs) by operando and in situ characterization. The structural evolution of Pt nanoparticles will be tracked in a representative device under accelerated protocols able to...
Minimum distance constraints (minDCs) appear in many geometric optimization problems. They pose major challenges for mixed-integer nonlinear programming (MINLP) due to their reverse-convexity. We develop new algorithms for tightening variable bounds in general MINLPs with minDCs. Because many such problems exhibit subs...
Optimization and Control (math.OC)Cutting planesOptimization and ControlMinimum distance constraints
Gabriele CORDARA · Anmol GAUTAM · Ute KRENGEL · Montserrat Canals MATEU · y 1 más
The fourteen PIs associated to this proposal represent the entire crystallography community in Norway and are affiliated to the major Norwegian universities. The research interests of the PIs and their collaborators revolves around topics linked to structural biology and material sciences. We apply for beam time for si...
basic medicinePaNmedical and health sciencesMX-2589
Li Wang · Yandong Wang · Xin Yu · Kui Zhang · y 2 más
The rapid progress of large language models (LLMs) has led to remarkable performance gains across a wide range of tasks. However, when handling long documents that exceed the model's context window limit, the entire context cannot be processed in a single pass, making chunk-wise processing necessary. This requires mult...
FOS: Computer and information sciencesengineering and technologyComputation and LanguageComputation and Language (cs.CL)
Daniel CHANEY · Werner PAULUS · Anna MARSICANO · Alexei BOSAK · y 1 más
The proposal aims to explore in situ the changes in the lattice dynamics during the electrochemical reduction of Pr2NiO4.25 showing sub-mesoscale oxygen ordering to Pr2NiO4.0. The study will enable to monitor the energy dependence of the soft mode behavior in Pr2NiO4+d with the charge transfer, i.e. the oxygen content,...
Opals are hydrated amorphous to poorly crystalline silica phases that form in a wide range of geological environments. Recent studies have shown that the shape of water-related absorption bands in the near infrared domain can be used as a potential proxy for deciphering opal genesis processes. However, the physicochemi...
natural sciencesearth and related environmental sciences
The structure of maximal faces of the cone of completely positive matrices is still not well understood in higher dimensions, mainly due to the lack of a general characterization of extreme exposed rays of the copositive cone beyond small matrix orders. This paper contributes to the study of maximal faces of the cone o...
Optimization and Control (math.OC)Optimization and ControlFOS: Mathematicsmathematics
Jessica ZEMAN · Joe STICKLAND · Fazel MIRZAEI · Daniyal YOUNAS · y 3 más
Imbibition of wetting liquids into porous media is a topic of great scientific interest due to its geological, environmental, biological, and daily life importance. Recent developments in X-ray techniques enable in situ imaging imbibition in 4D (3D + time). During imbibition, many rapid events take place at the interfa...
PaNES-1462Earth SciencesParticles, Nuclei and Fields
We prove the maximum modulus estimates in terms of the $L_{q,p}$-norm of the free term for solutions of the heat equation with Morrey drift for any $q,p$ satisfying $d/p+2/q<2$ and any order of integration in the definition of the $L_{q,p}$-norm. An application to the case of $b$ satisfying the Ladyzhenskaya-Prodi-Serr...
Analysis of PDEsFOS: Mathematics35B45, 35B30mathematics
Alberto RICCHEBUONO · Andrea PIOVANO · Daniele BONAVIA · Paolo LAZZARINI · y 2 más
We propose to study the H2- and CO-induced structural reconstruction of Ru nanoparticles (NPs) in Ru/Al2O3 catalysts by time-resolved XRD/PDF experiments under gas- and liquid-phase conditions. Preliminary gas-phase experiments (CH-6371) showed restructuring of Ru NPs during H2 activation, and literature reports ample...
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