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Reservoir computing (RC) is an innovative paradigm in neuromorphic computing that leverages fixed, randomized, internal connections to address the challenge of overfitting. RC has shown remarkable effectiveness in signal processing and…

Emerging Technologies · Computer Science 2025-03-04 Fyodor Morozko , Shadad Watad , Amir Naser , Andrey Novitsky , Alina Karabchevsky

We consider a hybrid active-passive radar system that employs a wireless source as a passive illuminator of opportunity (IO) and a co-channel active radar transmitter operating in the same frequency band to seek spectral efficiency. The…

Signal Processing · Electrical Eng. & Systems 2020-02-19 Fangzhou Wang , Hongbin Li

A dynamical system description of the transition process in shear flows with no linear instability starts with a knowledge of exact coherent solutions, among them travelling waves (TWs) and relative periodic orbits (RPOs). We describe a…

Fluid Dynamics · Physics 2009-11-13 Y. Duguet , C. C. T. Pringle , R. R. Kerswell

In response to the increasing number of devices expected in next-generation networks, a shift to over-the-air (OTA) computing has been proposed. By leveraging the superposition of multiple access channels, OTA computing enables efficient…

Singular arcs emerge in the solutions of Optimal Control Problems (OCPs) when the optimal inputs on some finite time intervals cannot be directly obtained via the optimality conditions. Solving OCPs with singular arcs often requires…

Optimization and Control · Mathematics 2025-04-25 Nikilesh Ramesh , Ross Drummond , Pablo Rodolfo Baldivieso Monasterios , Yuanbo Nie

Composite endpoints are frequently used as primary or secondary analyses in cardiovascular clinical trials to increase clinical relevance and statistical efficiency. Alternatively, the Win Ratio (WR) and other Win Statistics (WS) analyses…

Methodology · Statistics 2025-12-23 Yunhan Mou , Scott Hummel , Yuan Huang

A general, variational approach to derive low-order reduced systems is presented. The approach is based on the concept of optimal parameterizing manifold (OPM) that substitutes the more classical notions of invariant or slow manifold when…

Dynamical Systems · Mathematics 2023-09-18 Mickaël D. Chekroun , Honghu Liu , James C. McWilliams

The growing availability of large health databases has expanded the use of observational studies for comparative effectiveness research. Unlike randomized trials, observational studies must adjust for systematic differences in patient…

Methodology · Statistics 2026-01-21 Haidong Lu , Fan Li , Laine E. Thomas , Fan Li

Optimized Schwarz Waveform Relaxation methods have been developed over the last decade for the parallel solution of evolution problems. They are based on a decomposition in space and an iteration, where only subproblems in space-time need…

Numerical Analysis · Mathematics 2014-07-07 Daniel Bennequin , Martin J. Gander , Loic Gouarin , Laurence Halpern

In this paper, we propose a multi-input multi-output beamforming transmit optimization model for joint radar sensing and multi-user communications, where the design of the beamformers is formulated as an optimization problem whose objective…

Optimization and Control · Mathematics 2023-12-27 Zhiguo Wang , Jiageng Wu , Ya-Feng Liu , Fan Liu

Solving the Alternating Current Optimal Power Flow (AC OPF) problem to global optimality remains challenging due to its nonconvex quadratic constraints. In this paper, we present a unified framework that combines static piecewise…

Optimization and Control · Mathematics 2025-06-17 Yu-Yang Tang , Liang Chen , Sheng-Jie Chen , Yu-Hong Dai , Bo Zhou , Xiaomeng Ai

We present an optimize-then-discretize framework for solving linear-quadratic optimal control problems (OCP) governed by time-inhomogeneous ordinary differential equations (ODEs). Our method employs a modified overlapping Schwarz…

Optimization and Control · Mathematics 2025-10-14 Hongli Zhao , Mihai Anitescu , Sen Na

The integrated design of communication and sensing may offer a potential solution to address spectrum congestion. In this work, we develop a beamforming method for a dual-function radar-communication system, where the transmit signal is…

Signal Processing · Electrical Eng. & Systems 2025-08-07 Hossein Maleki , Carles Diaz-Vilor , Ali Pezeshki , Vahid Tarokh , Hamid Jafarkhani

This paper focuses on the joint design of transmit waveforms and receive filters for airborne multiple-input-multiple-output (MIMO) radar systems in spectrally crowded environments. The purpose is to maximize the output…

Signal Processing · Electrical Eng. & Systems 2023-04-06 Da Li , Bo Tang , Lei Xue

In this study, we propose an approach to constructing on-off keying (OOK) symbols for wake-up radios (WURs) by using sequences in the frequency domain. The proposed method enables orthogonal multiplexing of wake-up signals (WUSs) and…

Signal Processing · Electrical Eng. & Systems 2018-08-13 Alphan Sahin , Rui Yang

Optical wireless communication (OWC) is envisioned as one of the main enabling technologies of 6G networks, complementing radio frequency (RF) systems to provide high data rates. One of the crucial issues in indoor OWC is service…

Systems and Control · Electrical Eng. & Systems 2024-09-10 Ahrar N. Hamad , Ahmad Adnan Qidan , Taisir E. H. Elgorashi , Jaafar M. H. Elmirghani

We consider the problem of angle-robust joint transmit waveform and receive filter design for colocated Multiple-Input Multiple-Output (MIMO) radar, in the presence of signal-dependent interferences. The design problem is cast as a max-min…

Information Theory · Computer Science 2023-07-19 Wei Zhu , Jun Tang

Optimal power flow (OPF) is a key problem in power system operations. OPF problems that use the nonlinear AC power flow equations to accurately model the network physics have inherent challenges associated with non-convexity. To address…

Optimization and Control · Mathematics 2020-06-19 Mohammad Rasoul Narimani , Daniel K. Molzahn , Mariesa L. Crow

Online learning updates models incrementally with new data, avoiding large storage requirements and costly model recalculations. In this paper, we introduce "OLR-WA; OnLine Regression with Weighted Average", a novel and versatile…

Machine Learning · Computer Science 2025-12-18 Mohammad Abu-Shaira , Alejandro Rodriguez , Greg Speegle , Victor Sheng , Ishfaq Ahmad

Semi-analytical methods, such as rigorous coupled wave analysis, have been pivotal for numerical analysis of photonic structures. In comparison to other methods, they offer much faster computation, especially for structures with constant…

Numerical Analysis · Mathematics 2022-10-03 Ziwei Zhu , Changxi Zheng