Results 11 to 20 of about 549 (253)
Observed inequality in urban greenspace exposure in China
Environment International, 2021 Given the important role of green environments playing in healthy cities, the inequality in urban greenspace exposure has aroused growing attentions. However, few comparative studies are available to quantify this phenomenon for cities with different population sizes across a country, especially for those in the developing world. Besides, commonly used
Yimeng Song +13 more
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Observing an Anniversary: The 400 Years of Inequality Project
American Journal of Public Health, 2021 The 400 Years of Inequality Project was launched in 2016 by five partner organizations: the University of Orange, a people's university in Orange, New Jersey;the New School and Columbia University's Mailman School of Public Health, both in New York City;ONE DC, a Washington, DC-based organization working to advance racial and economic equity;and ...
Robert, Sember +3 more
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Observability Inequalities on Measurable Sets for the Stokes System and Applications [PDF]
SIAM Journal on Control and Optimization, 2020 In this paper, we establish spectral inequalities on measurable sets of positive Lebesgue measure for the Stokes operator, as well as an observability inequalities on space-time measurable sets of positive measure for non-stationary Stokes system. Furthermore, we provide their applications in the theory of shape optimization and time optimal control ...
Felipe Wallison Chaves Silva +2 more
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Sharp Observability Inequalities for Hyperbolic Systems with Potentials
ESAIM: Control, Optimisation and Calculus of Variations, 2023 This paper is devoted to a sharp internal/boundary observability inequality for a hyperbolic system with a zero order potential. For this purpose, we first establish a new Carleman estimate for hyperbolic operator inH1-norm. Based on this Carleman estimate and a modified auxiliary optimal control problem, we obtain Carleman estimate for hyperbolic ...
Fu, Xiaoyu, Liao, Zhonghua, Lü, Qi
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Electronic Journal of Qualitative Theory of Differential Equations, 2018 We deal with a control problem for a coupled system of two degenerate singular parabolic equations in non-divergence form with degeneracy and singularity appearing at an interior point of the space domain. In particular, we consider the well-posedness of
Jawad Salhi
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Electronic Journal of Differential Equations, 2020 This article concerns an observability inequality for a system of coupled wave equations for the continuous models as well as for the space semi-discrete finite difference approximations.
Dilberto da Silva Almeida Junior +3 more
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Optimal Placement of Phasor Measurement Unit in Smart Grids Considering Multiple Constraints
Journal of Modern Power Systems and Clean Energy, 2023 The distribution of measurement noise is usually assumed to be Gaussian in the optimal phasor measurement unit (PMU) placement (OPP) problem. However, this is not always accurate in practice.
Tengpeng Chen +4 more
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Null Controllability of a Nonlinear Age Structured Model for a Two-Sex Population
Abstract and Applied Analysis, 2021 This paper is devoted to study the null controllability properties of a nonlinear age and two-sex population dynamics structured model without spatial structure. Here, the nonlinearity and the couplage are at the birth level.
Amidou Traoré +3 more
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Nearly Linear-Phase 2-D Recursive Digital Filters Design Using Balanced Realization Model Reduction
Signals, 2023 This paper presents a new method for the design of separable-denominator 2-D IIR filters with nearly linear phase in the passband. The design method is based on a balanced realization model reduction technique.
Abdussalam Omar +2 more
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Exact Null Controllability of KdV-Burgers Equation with Memory Effect Systems
Abstract and Applied Analysis, 2012 This paper is concerned with exact null controllability analysis of nonlinear KdV-Burgers equation with memory. The proposed approach relies upon regression tool to prove controllability property of linearized KdV-Burgers equation via Carleman estimates.
Rajagounder Ravi Kumar +2 more
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