Royal Military College Saint-Jean

Abstract This essay is a reflection on the challenges faced by military academies, while developing in naval and officer-cadets, the ‘singular mindset’ required to prepare them for the professional responsibility awaiting them as future officers of the armed forces. As vocational schools, the main purpose of military academies is to train leaders of the armed forces with a comprehensive training and education programme, including, in most countries today, university studies. The choice of a specific academic discipline is of less importance, as there is no single or unique way to become an officer. The most important thing is that the education provided at military academies leads to the development of critical thinking rooted in a solid general culture at the service of the profession of arms.

Ongoing advancements in the design and fabrication of semiconductor devices have prompted the exploration of chemical approaches for the metallization of titanium nitride (TiN), a uniquely conductive ceramic material, as alternatives to conventional, high-cost, physical-based deposition techniques. Although direct electrolytic deposition of thin metallic films onto TiN surfaces remains industrially impractical, electroless metallization using an amine-terminated seed layer presents a promising solution. In this study, a copolymer of 4-nitrophenyl and 4-vinylpyridine (a PVP-like film) is successfully electrografted onto the TiN surface via diazonium chemistry. The interaction between the resulting amine-terminated PVP-like seed layer and a PdCl2/HCl activator is throughout investigated to provide insight into the autocatalytic mechanism underlying the electroless nickel plating process. This process facilitates the formation of a compact, continuous nickel–boron (Ni–B) thin film. The electrolessly deposited Ni–B layer serves as a robust base for subsequent electrolytic copper deposition, enabling the effective filling of serpentine structures in silicon microdevices. Thus, this work introduces a fully aqueous metallization approach suitable for microelectromechanical systems (MEMS). More importantly, covalent bonding of the electrografted polymer, as confirmed by X-ray photoelectron spectroscopy (XPS), is discussed to elucidate the strong adhesion properties of the PVP-like/Ni–B/Cu multilayer stack on the TiN surface.

Moog, Pierre-Emmanuel. Dans la fabrique des contes de Perrault. Paris, Classiques Garnier, 2024, 412 p. Isbn 978-2-406-16093-9. Un article de la revue Rabaska (Volume 23, 2025, p. 7-396) diffusée par la plateforme Érudit.

Todd, Emmanuel. Où en sont-elles ? Une esquisse de l’histoire des femmes. Paris, Seuil, 2022, 387 p. Isbn 978-2-02-140647-4. Un article de la revue Rabaska (Volume 22, 2024, p. 7-434) diffusée par la plateforme Érudit.

Cimon, Bernard. Ernest Gagnon et l’âme du Canada français avec la collaboration de Madeleine Gagnon. Québec, Presses de l’Université Laval, « Les Archives de folklore » 35, 2023, 385 p. Isbn 978-2-7663-0109-6. Un article de la revue Rabaska (Volume 22, 2024, p. 7-434) diffusée par la plateforme Érudit.

TBA

Defects in frustrated antiferromagnetic spin chains are universally present in geometrically frustrated systems. We consider the defects of the one-dimensional, spin-s XXZ chain with single-ion anisotropy on a periodic chain with N sites that was famously studied by Haldane. For N odd the antiferromagnetic model is frustrated, and the ground state must include a soliton defect. We consider the Heisenberg interaction perturbatively and determine the corresponding perturbative solitonic ground state. Then we compute the entanglement spectrum, entanglement entropy (EE), capacity of entanglement (CE), and spin correlations in the solitonic ground state. For weak frustration, we find an algebraic violation of the area law for the EE consistent with recent results on weakly frustrated chains. Our analysis then moves beyond the weak frustration regime, and we obtain a novel extensive scaling law for the EE when strong frustration prevails, signalling large entanglement, and failure of the quasiparticle interpretation in this regime. Enhanced frustration results in less total correlations, but relatively more nonlocal correlations.