Results 21 to 30 of about 526,525 (314)

Baroreflex Sensitivity Assessment Using the Sequence Method with Delayed Signals in End-Stage Renal Disease Patients

open access: yesSensors, 2022
Impaired baroreflex sensitivity (BRS) is partially responsible for erratic blood pressure fluctuations in End-Stage Renal Disease (ESRD) patients on chronic hemodialysis (HD), which is related to autonomic nervous dysfunction.
Marisol Martinez-Alanis   +6 more
doaj   +1 more source

An Overview of Physical Layer Security in Wireless Communication Systems With CSIT Uncertainty

open access: yesIEEE Access, 2016
The concept of physical layer security builds on the pivotal idea of turning the channel's imperfections, such as noise and fading, into a source of security.
Amal Hyadi   +2 more
doaj   +1 more source

TUNER-compliant error estimation for MIPAS: methodology [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
This paper describes the error estimation for temperature and trace gas mixing ratios retrieved from the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) limb emission spectra.
T. von Clarmann   +8 more
doaj   +1 more source

Target Matrix Estimators in Risk-Based Portfolios

open access: yesRisks, 2018
Portfolio weights solely based on risk avoid estimation errors from the sample mean, but they are still affected from the misspecification in the sample covariance matrix.
Marco Neffelli
doaj   +1 more source

Information-Corrected Estimation: A Generalization Error Reducing Parameter Estimation Method

open access: yesEntropy, 2021
Modern computational models in supervised machine learning are often highly parameterized universal approximators. As such, the value of the parameters is unimportant, and only the out of sample performance is considered.
Matthew Dixon, Tyler Ward
doaj   +1 more source

Observer canonical form based robust fault detection and estimation for hyperbolic spatiotemporal dynamic systems

open access: yesIET Cyber-systems and Robotics, 2020
In this study, the authors propose a novel state and a fault estimation scheme for a class of hyperbolic spatiotemporal dynamic systems in the presence of unknown external disturbance.
Xiaodong Xu   +2 more
doaj   +1 more source

Decentralized Fuzzy Observer-Based Fault Estimation for Nonlinear Large-Scale Systems

open access: yesIEEE Access
This paper presents a fault estimation technique based on the decentralized fuzzy observer for nonlinear large-scale systems, which are considered to be consisted of fuzzy subsystems and uncertain interconnections.
Geun Bum Koo
doaj   +1 more source

Tensor-Based Target Parameter Estimation Algorithm for FDA-MIMO Radar with Array Gain-Phase Error

open access: yesRemote Sensing, 2022
As a new radar system, FDA-MIMO radar has recently developed rapidly, as it has broad prospects in angle-range estimation. Unfortunately, the performance of existing algorithms for FDA-MIMO radar is greatly degrading or even failing under the condition ...
Yuehao Guo   +4 more
doaj   +1 more source

Joint Error Estimation and Calibration Method of Memory Nonlinear Mismatch for a Four-Channel 16-Bit TIADC System

open access: yesSensors, 2022
Memory nonlinear error greatly reduces the performance of analog-to-digital converters (ADCs), and this effect is more serious in a time-interleaved analog-to-digital converter (TIADC) system. In this study, the sinusoidal wave fitting method was adopted
Jianwei Zhang   +4 more
doaj   +1 more source

Linearization errors in discrete goal-oriented error estimation

open access: yesComputer Methods in Applied Mechanics and Engineering, 2023
This paper is concerned with goal-oriented a posteriori error estimation for nonlinear functionals in the context of nonlinear variational problems solved with continuous Galerkin finite element discretizations. A two-level, or discrete, adjoint-based approach for error estimation is considered.
Brian N. Granzow   +2 more
openaire   +3 more sources

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