Results 31 to 40 of about 406,966 (316)
Exact and positive controllability of boundary control systems
Networks & Heterogeneous Media, 2017 Using the semigroup approach to abstract boundary control problems we characterize the space of all exactly reachable states. Moreover, we study the situation when the controls of the system are required to be positive. The abstract results are applied to flows in networks with static as well as dynamic boundary conditions.
ENGEL, KLAUS JOCHEN OTTO +1 more
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On a class of boundary control problems [PDF]
Operators and Matrices, 2014 We discuss a class of linear control problems in a Hilbert space setting, which covers diverse systems such as hyperbolic and parabolic equations with boundary control and boundary observation even including memory terms. We introduce abstract boundary data spaces in which the control and observation equations can be formulated without strong geometric
Picard, Rainer +2 more
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Fractal and FractionalThis article mainly delves into finite-time passivity and finite-time synchronization of fractional-order spatiotemporal directed networks with multiple weights via boundary control schemes.
Li Zhao, Cheng Hu, Juan Yu
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On Fattorini's paper: “Boundary Control Systems” [PDF]
, 2017 In 1968 Fattorini published in SIAM Journal on Control his well-known paper with the title Boundary Control Systems. In this paper he sets up the abstract theory for systems described by partial differential equations with a control at the boundary.
Zwart, Hans +3 more
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Large scale separation flow control experiments within the German Flow Control Network [PDF]
, 2009 This is an overview on flow control experiments for flow separation control conducted in the DNW-NWB atmospheric low-speed wind tunnel performed within the German Flow Control Network. Emphasis is given on the experimental setup using the DLR F15 wall-to-
Wild, Jochen +9 more
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Optimal Boundary Control of Non-Isothermal Viscous Fluid Flow
Fluids, 2019 We study an optimal control problem for the mathematical model that describes steady non-isothermal creeping flows of an incompressible fluid through a locally Lipschitz bounded domain.
Evgenii S. Baranovskii +2 more
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Boundary Controllability of a Pseudoparabolic Equation [PDF]
Abstract and Applied Analysis, 2013 We deal with the controllability problem for the pseudoparabolic equation by means of boundary controls. Due to the unusual spectrum of this kind of equations, we prove that the null controllability property is false. Furthermore, by the explicit solution, we show that the approximate controllability holds.
Qiang Tao, Hang Gao, Zheng-an Yao
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The Problem of Boundary Control of the Thermal Process in a Rod
Mathematics, 2023 This paper considers a rod with an insulated side surface, at the edges of which there is heat exchange with the external environment. It is assumed that the thermal process in the rod is controlled by the effect of the ambient temperature on the thermal
Vanya Barseghyan, Svetlana Solodusha
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ON THE BOUNDARY CONTROL OF BEAM EQUATION [PDF]
IFAC Proceedings Volumes, 2002 A flexible system described by Euler-Bernoulli beam equation is considered. The beam is clamped at one end, and is free at the other end. Boundary control force and torque inputs are applied at the free end of the beam. The transfer functions of the controllers are marginally stable and may contain some poles on the imaginary axis.
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Natural Killer Cells in Paediatric Soft Tissue Sarcomas: A Systematic Review
Pediatric Blood &Cancer, EarlyView.ABSTRACT Paediatric soft tissue sarcomas (pSTS) are a rare and heterogeneous group of malignant tumours arising in tissues of mesenchymal origin. The role of natural killer (NK) cells in pSTS remains poorly understood, with evidence fragmented across small preclinical studies and early‐phase clinical trials.
Raya Dean +7 more
wiley +1 more source