Results 61 to 70 of about 2,436 (140)

Model‐based fault diagnosis in closed‐loop safety‐critical chemical reactors: An experimental study

AIChE Journal, Volume 71, Issue 9, September 2025.
Abstract This experimental study investigates fault detection and estimation in a continuous stirred‐tank reactor (CSTR) system under closed‐loop feedback control, including an analysis of different manipulative inputs for temperature regulation. A novel fault diagnosis approach is proposed, combining residual signal analysis and T2 statistic for real ...
Pu Du, Benjamin Wilhite, Costas Kravaris
wiley   +1 more source

Geometric realizations of the s‐weak order and its lattice quotients

Journal of the London Mathematical Society, Volume 112, Issue 3, September 2025.
Abstract For an n$n$‐tuple s${\bm{s}}$ of nonnegative integers, the s${\bm{s}}$‐weak order is a lattice structure on s${\bm{s}}$‐trees, generalizing the weak order on permutations. We first describe the join irreducible elements, the canonical join representations, and the forcing order of the s${\bm{s}}$‐weak order in terms of combinatorial objects ...
Eva Philippe, Vincent Pilaud
wiley   +1 more source

Reach Set-Based Secure State Estimation against Sensor Attacks with Interval Hull Approximation

SICE Journal of Control, Measurement, and System Integration, 2018
This paper deals with the problem of secure state estimation in an adversarial environment with the presence of bounded noises. The problem is given as min-max optimization, that is, the system operator seeks an optimal estimate which minimizes the worst-
Takumi Shinohara, Toru Namerikawa
doaj   +1 more source

Zonotopes and four-dimensional superconformal field theories [PDF]

, 2006
The a-maximization technique proposed by Intriligator and Wecht allows us to determine the exact R-charges and scaling dimensions of the chiral operators of four-dimensional superconformal field theories.
A. Butti, A. Hanany, A. Hanany, A.B. Zomolodchikov, Akishi Kato, B.S. Acharya, D. Martelli, D.R. Morrison, E. Lerman, E. Witten, G.C. Shephard, J.M. Maldacena, M. Henningson, M.-N. Ishida, M.J. Duff, R. Schneider, S. Benvenuti, S. Benvenuti, S. Benvenuti, S. Franco, S. Lee, T. Delzant, V. Guillemin   +22 more
core   +5 more sources

Lattice zonotopes of degree 2

Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry, 2022
AbstractThe Ehrhart polynomial$${\text {ehr}}_P (n)$$ ehr P ( n ) of a lattice polytope P gives the ...
Matthias Beck, Ellinor Janssen, Katharina Jochemko   +2 more
openaire   +3 more sources

Safety Filters Against Actuator Attacks

International Journal of Robust and Nonlinear Control, Volume 35, Issue 9, Page 3640-3657, June 2025.
ABSTRACT This manuscript focuses on mitigating the effect of deception attacks on control signals, that is, in the presence of an adversary that tampers with data coming from the controller to the system actuators in order to degrade the plant performance.
Cédric Escudero, Carlos Murguia, Daniel Quevedo, Paolo Massioni, Eric Zamaï   +4 more
wiley   +1 more source

Projection volumes of hyperplane arrangements [PDF]

, 2010
We prove that for any finite real hyperplane arrangement the average projection volumes of the maximal cones is given by the coefficients of the characteristic polynomial of the arrangement. This settles the conjecture of Drton and Klivans that this held
Klivans, Caroline J., Swartz, Ed
core  

Steenrod operations via higher Bruhat orders

Proceedings of the London Mathematical Society, Volume 130, Issue 2, February 2025.
Abstract The purpose of this paper is to establish a correspondence between the higher Bruhat orders of Yu. I. Manin and V. Schechtman, and the cup‐i$i$ coproducts defining Steenrod squares in cohomology. To any element of the higher Bruhat orders, we associate a coproduct, recovering Steenrod's original ones from extremal elements in these orders ...
Guillaume Laplante‐Anfossi, Nicholas J. Williams   +1 more
wiley   +1 more source

Spectral Polyhedra

Forum of Mathematics, Sigma
A spectral convex set is a collection of symmetric matrices whose range of eigenvalues forms a symmetric convex set. Spectral convex sets generalize the Schur-Horn orbitopes studied by Sanyal–Sottile–Sturmfels (2011). We study this class of convex bodies,
Raman Sanyal, James Saunderson
doaj   +1 more source

Optimization and Abstraction: A Synergistic Approach for Analyzing Neural Network Robustness

, 2019
In recent years, the notion of local robustness (or robustness for short) has emerged as a desirable property of deep neural networks. Intuitively, robustness means that small perturbations to an input do not cause the network to perform ...
Bastani Osbert, Gao Sicun, Gehr Timon, Goodfellow Ian J., Gopinath Divya, He Kaiming, Julian Kyle D., Katz Guy, Krizhevsky Alex, Martinez-Cantin Ruben, Pulina Luca, Scheibler Karsten, Si Xujie, Wang Shiqi   +13 more
core   +1 more source