Results 31 to 40 of about 3,341 (138)

Short selling ETFs and market performance

Journal of Financial Research, EarlyView.
Abstract We examine short selling activity in leveraged Exchange‐Traded Funds (ETFs) and its impact on underlying index performance. Using a novel measure of ETF short exposure, which includes long positions in inverse leveraged ETFs, we document that high short exposure is associated with positive performance in the subsequent period.
Doina C. Chichernea, Alex Petkevich, Kainan Wang   +2 more
wiley   +1 more source

Controlled Tracking in Urban Terrain: Closing the Loop

, 2018
We investigate the challenging problem of integrating detection, signal processing, target tracking, and adaptive waveform scheduling with lookahead in urban terrain.
Barbosa, Patricia R., Chong, Edwin K. P., Li, Yun, Moran, Bill, Sarkale, Yugandhar, Suvorova, Sofia   +5 more
core   +1 more source

Comparative Analysis of the Performances of a Nonlinear Observer and Nonlinear Kalman Filters in the Presence of Non‐Gaussian Disturbances

International Journal of Robust and Nonlinear Control, Volume 36, Issue 7, Page 3896-3913, 10 May 2026.
ABSTRACT This paper focuses on state estimation for a fairly general class of systems, involving nonlinear functions and disturbances in both the process dynamics and output equations. A nonlinear observer that satisfies a H∞$$ {\boldsymbol{H}}_{\boldsymbol{\infty}} $$ disturbance attenuation constraint in addition to providing asymptotic stability in ...
Hamidreza Movahedi, Ali Zemouche, Rajesh Rajamani   +2 more
wiley   +1 more source

The Design Method of Enhanced Unscented Kalman Filter Considering UT Transform Truncation Error

IEEE Access
Although the Unscented Kalman Filter (UKF) generally outperforms the Extended Kalman Filter (EKF) due to its superior approximation of nonlinear state transition functions, the core Unscented Transform (UT) still cannot precisely capture complex ...
Ziran Luo, Chenglin Wen
doaj   +1 more source

A method of voltage sag detection based on strong tracking SVD-UKF

Journal of Physics: Conference Series
Abstract Addressing issues of the traditional strong tracking unscented Kalman filtering (STUKF) algorithm in the process of voltage sag detection, such as inadequate precision, large computational complexity, and unstable iterative procedures, a method of voltage sag detection based on strong tracking SVD-UKF is proposed.
Tao Yang, Hongmiao Du, Haibo Li, Anbin Zhang, Shuangxi Zhang   +4 more
openaire   +1 more source

Differential effects of the oncogenic BRAF inhibitor PLX4032 (vemurafenib) and its progenitor PLX4720 on ABCB1 function [PDF]

, 2014
PURPOSE: The clinically approved oncogenic BRAF inhibitor PLX4032 (vemurafenib) was shown to be a substrate of the ATP-binding cassette (ABC) transporter ABCB1. Here, we compared PLX4032 and its structurally closely related precursor compound PLX4720 for
Cinatl Jr., J, Ghafourian, T, Michaelis, M, Nerreter, T, Rothweiler, F, Sharifi, M, Van Rikxoort, M, Wiese, M   +7 more
core   +1 more source

Why Autonomous Vehicles Are Not Ready Yet: A Multi‐Disciplinary Review of Problems, Attempted Solutions, and Future Directions

Journal of Field Robotics, Volume 43, Issue 3, Page 2254-2341, May 2026.
ABSTRACT Personal autonomous vehicles can sense their surrounding environment, plan their route, and drive with little or no involvement of human drivers. Despite the latest technological advancements and the hopeful announcements made by leading entrepreneurs, to date no personal vehicle is approved for road circulation in a “fully” or “semi ...
Xingshuai Dong, Massimiliano Cappuccio, Fady Alnajjar, Luqman Ali, Hamad Al Jassmi, Essam Debie, Milad Ghasrikhouzani, Alessandro Lanteri, Tate McGregor, Oleksandra Molloy, Alice Plebe, Michael Regan, Eduardo Sandoval, Dongmo Zhang   +13 more
wiley   +1 more source

Accurate State of Charge Estimation in Lithium‐Ion Batteries by Second‐Order Sliding Mode Observer

Battery Energy, Volume 5, Issue 2, March 2026.
A finite‐time second‐order sliding mode observer (SO‐SMO) is proposed for accurate and robust state‐of‐charge estimation in lithium‐ion batteries, achieving fast convergence, chattering elimination, and superior estimation accuracy compared to conventional methods, making it ideal for real‐time battery management applications in electric and hybrid ...
Mohammad Asadi, Vahid Behnamgol, Mona Faraji Niri, Mohamed Mohamed, Uchenna Diala, Behnaz Sohani   +5 more
wiley   +1 more source

Two-layer particle filter for multiple target detection and tracking [PDF]

, 2012
This paper deals with the detection and tracking of an unknown number of targets using a Bayesian hierarchical model with target labels. To approximate the posterior probability density function, we develop a two-layer particle filter.
García Fernández, Ángel Froilán, Grajal de la Fuente, Jesús, Morelande, Mark R.   +2 more
core   +1 more source

Dominant deer mice show the importance of abundance in competition

Ecosphere, Volume 17, Issue 3, March 2026.
Abstract Detecting competitive interactions is important for predicting species responses to environmental change but remains challenging, especially over large scales. Modern coexistence theory predicts that reduced ecological trait overlap promotes coexistence through stabilizing mechanisms, while fitness differences generate competitive asymmetries.
Arielle W. Parsons, James Clark, Roland Kays   +2 more
wiley   +1 more source