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A Purusit Differential Game Problem on a Closed Convex Subset of a Hilbert Space
Journal of Nigerian Society of Physical Sciences, 2020 We study a pursuit differential game problem with finite number of pursuers and one evader on a nonempty closed convex subset of the Hilbert space l2. Players move according to certain first order ordinary differential equations and control functions of ...
Abbas Ja'afaru Badakaya +1 more
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Integrity Constraints Revisited
Logic Journal of IGPL, 1996 When computerised databases began to be used in business applications, there naturally arose a concern with how the integrity the stored data could be checked. This task was irnplemented by large sets of programs, depending on each par ticular application.
Demolombe, Robert, Jones, Andrew
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Ural Mathematical Journal, 2023 In this paper the control system described by a nonlinear differential equation is studied. It is assumed that the control functions have a quadratic integral constraint, more precisely, the admissible control functions are chosen from the ellipsoid of ...
Anar Huseyin, Nesir Huseyin
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Mathematical Modelling and Analysis, 2012 In this paper the controllable system whose behaviour is described by a nonlinear Volterra integral equation, is studied. The set of admissible control functions is the closed ball of the space L p (p > 1) with radius µ 0 and centered at the origin.
Anar Huseyin, Nesir Huseyin
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Square wave reference digital lock-in detection using non-orthogonal demodulation
Heliyon, 2023 Digital lock-in detection technique is commonly used to measure the amplitude and phase of a selected frequency signal. The technique which uses a square wave as the reference signal has an advantage of easier implementation and higher computational ...
Miao Li +3 more
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Integrity constraints in trust management [PDF]
Proceedings of the tenth ACM symposium on Access control models and technologies, 2005 We introduce the use, monitoring, and enforcement of integrity constraints in trust management-style authorization systems. We consider what portions of the policy state must be monitored to detect violations of integrity constraints. Then we address the fact that not all participants in a trust management system can be trusted to assist in such ...
Etalle, Sandro, Winsborough, William H.
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Mathematical Modelling and Analysis, 2015 Approximation of the sections of the set of trajectories of the control system described by a nonlinear Volterra integral equation is studied. The admissible control functions are chosen from the closed ball of the space Lp, p > 1, with radius µ and ...
Anar Huseyin +2 more
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Keeping it together: A phase-field version of path-connectedness and its implementation
Journal of Algorithms & Computational Technology, 2021 We describe the implementation of a topological constraint in finite-element simulations of phase-field models, which ensures path-connectedness of preimages of intervals in the phase-field variable.
Patrick Dondl, Stephan Wojtowytsch
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Existential active integrity constraints [PDF]
Expert Systems with Applications, 2021 Abstract Active integrity constraints (AICs) are a useful formalism to express integrity constraints and policies to restore consistency in databases violating them. However, AICs do not allow users to express different kinds of constraints commonly arising in practice, such as foreign keys.
Calautti M. +5 more
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Dependence on Initial Conditions of Attainable Sets of Control Systems with p-Integrable Controls
Nonlinear Analysis, 2007 Quasi-linear systems governed by p-integrable controls, for 1 < p < ∞ with constraint ku(·)kp ≤ µ0 are considered. Dependence on initial conditions of attainable sets are studied.
E. Akyar
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