Results 251 to 260 of about 22,980 (304)

A Caputo fractional-order SEIHRD model for Ebola: theoretical analysis, sensitivity, bifurcation, and numerical simulations. [PDF]

Sci Rep
Malathy R, Krishnan GSS, Loganathan K.
europepmc   +1 more source

Robust Position Control of an Electro‐Hydraulic Actuator via Metaheuristic Optimization of a Fractional‐Order PID Controller

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar, Davut Izci, Serdar Ekinci, Mohammad Salman, Mohammad Al‐Rabayah, Ali Akdagli, Ali Yildiz, Filiz Karaomerlioglu, Gökhan Yüksek   +8 more
wiley   +1 more source

Fractional dynamics and optical soliton propagation in mono-mode fibers via the Fokas system. [PDF]

Sci Rep
Iqbal N, Aldhabani MS, Alam N, Hamza AE, Mohammed WW, Hamoud AA.   +5 more
europepmc   +1 more source

Tactical and Strategic Risks From Supply Disruptions in Competing Supply Chains

Naval Research Logistics (NRL), EarlyView.
ABSTRACT Supply chain disruptions can lead to both tactical (i.e., loss of short‐term sales during a disruption) and strategic (i.e., loss of long‐term market share) consequences. We model the impact of a supply disruption on competing supply chains in which two firms compete for a limited backup supply.
Akhil Singla, Wallace J. Hopp, Seyed M. R. Iravani, Zigeng Liu   +3 more
wiley   +1 more source

Targeted epidemic mitigation through age-specific dose-response recovery modeling. [PDF]

BMC Infect Dis
Umapathy K, Selvam P, Natarajan A, Dhandapani PB, Nalule RM.   +4 more
europepmc   +1 more source

Nonprofit Governance and Financial Stability: A Study of Government‐Funded Social Services

Nonprofit Management and Leadership, EarlyView.
ABSTRACT Nonprofit social service providers are essential in delivering vital services, often with public funding. This study adopts a contingency perspective to explore the relationship between organizational governance and financial stability in publicly funded nonprofit organizations. We use a combination of comparative multilevel analysis (CMA) and
Florentine Maier, Michael Meyer, Josef Baumüller, Christian Grünhaus, Franka Walde   +4 more
wiley   +1 more source

Neural network surrogates enable robust and accessible modeling of renal epithelial transport. [PDF]

Physiol Rep
Layton AT.
europepmc   +1 more source

Coexistence, crossover and extirpation in coalescent communities and ecotones

Oikos, EarlyView.
When two ecological communities come into contact, the strength of their mixing determines whether species coexist, extirpate, or extend their ranges. We present analytical formulas and simulations describing these transitions. Specifically, we derive abundance shifts upon community coalescence, identify the critical mixing strength leading to first ...
Martin Heidelman, Dervis Can Vural
wiley   +1 more source

Analytic solutions for Euler-Bernoulli beams with axial compression resting on a nonlinear elastic foundation using MADM. [PDF]

Sci Rep
Chou LK, Lin MX.
europepmc   +1 more source

Exact and numerical optical soliton solutions of the fractional quadratic-cubic nonlinear Schrödinger equation in conformable derivative framework. [PDF]

Sci Rep
Amer A, Jaradat EK, Rehman HU, Yildirim Y, Abu Alrub S, Ateto MS.   +5 more
europepmc   +1 more source