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Thermal stability and phase transformation of $\alpha$-, $\kappa(\epsilon)$-, and $\gamma$-Ga$_2$O$_3$ thin films to $\beta$-Ga$_2$O$_3$ under various ambient conditions

Autor: Tang, J., Jiang, K., Tseng, P., Kurchin, R. C., Porter, L. M., Davis, R. F.

Phase transitions in metastable $\alpha$-, $\kappa(\epsilon)$-, and $\gamma$-Ga$_2$O$_3$ films to thermodynamically stable $\beta$-Ga$_2$O$_3$ during annealing in air, N$_2$, and vacuum have been systematically investigated via in-situ high-temperatu

Externí odkaz: http://arxiv.org/abs/2405.00299

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Designing, simulating, and performing the 100-AV field test for the CIRCLES consortium: Methodology and Implementation of the Largest mobile traffic control experiment to date

Previous controlled experiments on single-lane ring roads have shown that a single partially autonomous vehicle (AV) can effectively mitigate traffic waves. This naturally prompts the question of how these findings can be generalized to field operati

Externí odkaz: http://arxiv.org/abs/2404.15533

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Traffic smoothing using explicit local controllers

Autor: Hayat, Amaury, Alanqary, Arwa, Bhadani, Rahul, Denaro, Christopher, Weightman, Ryan J., Xiang, Shengquan, Lee, Jonathan W., Bunting, Matthew, Gollakota, Anish, Nice, Matthew W., Gloudemans, Derek, Zachar, Gergely, Davis, Jon F., Monache, Maria Laura Delle, Seibold, Benjamin, Bayen, Alexandre M., Sprinkle, Jonathan, Work, Daniel B., Piccoli, Benedetto

The dissipation of stop-and-go waves attracted recent attention as a traffic management problem, which can be efficiently addressed by automated driving. As part of the 100 automated vehicles experiment named MegaVanderTest, feedback controls were us

Externí odkaz: http://arxiv.org/abs/2310.18151

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Atomic-scale investigation of $\gamma$-Ga$_2$O$_3$ deposited on MgAl$_2$O$_4$ and its relationship with $\beta$-Ga$_2$O$_3$

Autor: Tang, J., Jiang, K., Xu, C., Cabral, M. J., Xiao, K., Porter, L. M., Davis, R. F.

Nominally phase-pure $\gamma$-$Ga_2O_3$ was deposited on (100) $MgAl_2O_4$ within a narrow temperature window centered at $\sim$470 $^{\circ}$C using metal-organic chemical vapor deposition (MOCVD). The film deposited at 440 $^{\circ}$C exhibited eit

Externí odkaz: http://arxiv.org/abs/2310.12493

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On Nielsen realization and manifold models for classifying spaces

Autor: Davis, James F., Lueck, Wolfgang

We consider the problem of whether, for a given virtually torsionfree discrete group $\Gamma$, there exists a cocompact proper topological $\Gamma$-manifold, which is equivariantly homotopy equivalent to the classifying space for proper actions. This

Externí odkaz: http://arxiv.org/abs/2303.15765

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Chain duality for categories over complexes

Autor: Davis, James F., Rovi, Carmen

Publikováno v: EMS Surv. Math. Sci. 9 (2022), 477-505

We show that the additive category of chain complexes parametrized by a finite simplicial complex $K$ forms a category with chain duality. This fact, never fully proven in the original reference, is fundamental for Ranicki's algebraic formulation of

Externí odkaz: http://arxiv.org/abs/2204.01946

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