Results 31 to 40 of about 1,686,514 (289)

Constraining Attacker Capabilities Through Actuator Saturation

open access: yes, 2017
For LTI control systems, we provide mathematical tools - in terms of Linear Matrix Inequalities - for computing outer ellipsoidal bounds on the reachable sets that attacks can induce in the system when they are subject to the physical limits of the ...
cardenas   +6 more
core   +1 more source

Smallest Ellipsoid Containing $p$-Sum of Ellipsoids With Application to Reachability Analysis [PDF]

open access: yesIEEE Transactions on Automatic Control, 2018
In this article the problem of ellipsoidal bounding of convex set-valued data, where the convex set is obtained by the $p$-sum of finitely many ellipsoids, for any real $p\geq 1$ is studied.
A. Halder
semanticscholar   +1 more source

Optimal state observation using quadratic boundedness: Application to UAV disturbance estimation

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2019
This paper presents the design of a state observer which guarantees quadratic boundedness of the estimation error. By using quadratic Lyapunov stability analysis, the convergence rate and the ultimate (steady-state) error bounding ellipsoid are ...
Cayero Julián   +3 more
doaj   +1 more source

Curvature-based pebble segmentation for reconstructed surface meshes [PDF]

open access: yesEarth Surface Dynamics
Accurate segmentation of pebbles in complex 3D scenes is essential to understand sediment transport and river dynamics. In this study, we present a curvature-based instance segmentation approach for detecting and characterizing pebbles from 3D surface ...
A. Rheinwalt, B. Purinton, B. Bookhagen
doaj   +1 more source

Orientation, sphericity and roundness evaluation of particles using alternative 3D representations [PDF]

open access: yes, 2014
Sphericity and roundness indices have been used mainly in geology to analyze the shape of particles. In this paper, geometric methods are proposed as an alternative to evaluate the orientation, sphericity and roundness indices of 3D objects.
Ayala Vallespí, M. Dolors   +1 more
core   +1 more source

Properties of an Aloha-like stability region

open access: yes, 2016
A well-known inner bound on the stability region of the finite-user slotted Aloha protocol is the set of all arrival rates for which there exists some choice of the contention probabilities such that the associated worst-case service rate for each user ...
Walsh, John MacLaren   +2 more
core   +1 more source

Plecstatin inhibits hepatocellular carcinoma tumorigenesis and invasion through cytolinker plectin

open access: yesMolecular Oncology, EarlyView.
The ruthenium‐based metallodrug plecstatin exerts its anticancer effect in hepatocellular carcinoma (HCC) primarily through selective targeting of plectin. By disrupting plectin‐mediated cytoskeletal organization, plecstatin inhibits anchorage‐dependent growth, cell polarization, and tumor cell dissemination.
Zuzana Outla   +10 more
wiley   +1 more source

Using the Ellipsoid Method for Sylvester's Problem and its Generalization

open access: yesКібернетика та комп'ютерні технології
Sylvester's problem or the problem of the smallest bounding circle is the problem of constructing a circle of the smallest radius that contains a finite set of points on the plane.
Petro Stetsyuk   +2 more
doaj   +1 more source

An Ellipsoidal Branch and Bound Algorithm for Global Optimization

open access: yesSIAM Journal on Optimization, 2009
19 ...
Hager, William, Phan, Dzung
openaire   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

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