Results 11 to 20 of about 22,474,821 (353)
Mathematical models for predicting human mobility in the context of infectious disease spread: introducing the impedance model [PDF]
Int J Health Geogr, 2017 BackgroundMathematical models of human mobility have demonstrated a great potential for infectious disease epidemiology in contexts of data scarcity.
Kankoé Sallah +8 more
semanticscholar +2 more sources
Impedance Matching-Based Power Flow Analysis for UPQC in Three-Phase Four-Wire Systems
Energies, 2021 Different from the extant power flow analysis methods, this paper discusses the power flows for the unified power quality conditioner (UPQC) in three-phase four-wire systems from the point of view of impedance matching.
Xiaojun Zhao +5 more
doaj +1 more source
IEEE Access, 2020 The sequence impedance of modular multilevel converters (MMC) is the premise to analyze the stability of MMC-based high voltage direct current (HVDC) system.
Taiyuan Yin +7 more
doaj +1 more source
IET Cyber-systems and Robotics, 2023 This study addresses two issues about the interaction of the upper limb rehabilitation robot with individuals who have disabilities. The first step is to estimate the human's target position (also known as TPH).
Brahim Brahmi +2 more
doaj +1 more source
Effective impedance modeling of metamaterial structures [PDF]
Journal of the Optical Society of America A, 2016 We present methods for retrieving the effective impedance of metamaterials from the Fresnel reflection coefficients at the interface between two semi-infinite media. The derivation involves the projection of rigorous modal expansions onto the dominant modes of the two semi-infinite media.
Kokou B, Dossou +2 more
openaire +3 more sources
A spatial impedance controller for robotic manipulation [PDF]
, 1997 Mechanical impedance is the dynamic generalization of stiffness, and determines interactive behavior by definition. Although the argument for explicitly controlling impedance is strong, impedance control has had only a modest impact on robotic ...
Broenink, Jan F., Fasse, Ernest D.
core +2 more sources
Energies, 2016 Wireless power transfer (WPT) is greatly affected when the transmission channel is surrounded by non-ferromagnetic metallic objects and the alternating magnetic field interacts with the metal conductor, which is more of an issue in wirelessly charged ...
Linlin Tan +5 more
doaj +1 more source
Estimates of Acausal Joint Impedance Models [PDF]
IEEE Transactions on Biomedical Engineering, 2012 Estimates of joint or limb impedance are commonly used in the study of how the nervous system controls posture and movement, and how that control is altered by injury to the neural or musculoskeletal systems. Impedance characterizes the dynamic relationship between an imposed perturbation of joint position and the torques generated in response.
David T, Westwick, Eric J, Perreault
openaire +2 more sources
An Effective EMTR-Based High-Impedance Fault Location Method for Transmission Lines
, 2020 This paper summarizes the electromagnetic time reversal (EMTR) technique for fault location, and further numerically validates its effectiveness when the fault impedance is negligible. In addition, a specific EMTR model considering the fault impedance is
An, Jianwei +3 more
core +1 more source
Comparison of human uterine cervical electrical impedance measurements derived using two tetrapolar probes of different sizes [PDF]
, 2006 BACKGROUND We sought to compare uterine cervical electrical impedance spectroscopy measurements employing two probes of different sizes, and to employ a finite element model to predict and compare the fraction of electrical current derived from ...
BH Brown +22 more
core +3 more sources