Zobrazeno 1 - 10
of 609
pro vyhledávání: '"Covi, P."'
Heracles: A HfO$\mathrm{_2}$ Ferroelectric Capacitor Compact Model for Efficient Circuit Simulations
Autor:
Fehlings, Luca, Ali, Md Hanif, Gibertini, Paolo, Gallicchio, Egidio A., Ganguly, Udayan, Deshpande, Veeresh, Covi, Erika
This paper presents a physics-based compact model for circuit simulations in a SPICE environment for HfO2-based ferroelectric capacitors (FeCaps). The model has been calibrated based on experimental data obtained from HfO2-based FeCaps. A thermal mod
Externí odkaz:
http://arxiv.org/abs/2410.07791
Autor:
Covi, Giovanni
The fractional Calder\'on problem asks to determine the unknown coefficients in a nonlocal, elliptic equation of fractional order from exterior measurements of its solutions. There has been substantial work on many aspects of this inverse problem. In
Externí odkaz:
http://arxiv.org/abs/2408.14200
Autor:
Covi, Giovanni, Lassas, Matti
We study an inverse problem on a finite connected graph $G = (X, E)$, on whose vertices a conductivity $\gamma$ is defined. Our data consists in a sequence of partial observations of a fractional random walk on $G$. The observations are partial in th
Externí odkaz:
http://arxiv.org/abs/2408.05072
We prove exponential instability properties for the fractional Calder\'on problem and the conductivity formulation of the fractional Calder\'on problem in the regime of fractional powers $s\in (0,1)$. We particularly focus on two settings: First, we
Externí odkaz:
http://arxiv.org/abs/2405.08381
Publikováno v:
Neuromorphic Computing and Engineering 2023
Different real-world cognitive tasks evolve on different relevant timescales. Processing these tasks requires memory mechanisms able to match their specific time constants. In particular, the working memory utilizes mechanisms that span orders of mag
Externí odkaz:
http://arxiv.org/abs/2306.14691
We relate the (anisotropic) variable coefficient local and nonlocal Calder\'on problems by means of the Caffarelli-Silvestre extension. In particular, we prove that (partial) Dirichlet-to-Neumann data for the fractional Calder\'on problem in three an
Externí odkaz:
http://arxiv.org/abs/2305.04227
Autor:
Covi, Giovanni
In this paper we study an inverse problem for fractional anisotropic conductivity. Our nonlocal operator is based on the well-developed theory of nonlocal vector calculus, and differs substantially from other generalizations of the classical anisotro
Externí odkaz:
http://arxiv.org/abs/2212.11331
Publikováno v:
2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS)
The necessity of having an electronic device working in relevant biological time scales with a small footprint boosted the research of a new class of emerging memories. Ag-based volatile resistive switching memories (RRAMs) feature a spontaneous chan
Externí odkaz:
http://arxiv.org/abs/2211.03081
Autor:
Gibertini, Paolo, Fehlings, Luca, Lancaster, Suzanne, Duong, Quang, Mikolajick, Thomas, Dubourdieu, Catherine, Slesazeck, Stefan, Covi, Erika, Deshpande, Veeresh
Publikováno v:
2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS)
Event-based neuromorphic systems provide a low-power solution by using artificial neurons and synapses to process data asynchronously in the form of spikes. Ferroelectric Tunnel Junctions (FTJs) are ultra low-power memory devices and are well-suited
Externí odkaz:
http://arxiv.org/abs/2211.02598
Publikováno v:
SIAM Journal on Mathematical Analysis (2024), vol. 56 (2), pp. 2456-2487
We study the stability of an inverse problem for the fractional conductivity equation on bounded smooth domains. We obtain a logarithmic stability estimate for the inverse problem under suitable a priori bounds on the globally defined conductivities.
Externí odkaz:
http://arxiv.org/abs/2210.01875