Results 51 to 60 of about 371,472 (295)

High-Order, Accurate Finite Difference Schemes for Fourth-Order Differential Equations

Axioms
This article is devoted to the study of high-order, accurate difference schemes’ numerical solutions of local and non-local problems for ordinary differential equations of the fourth order. Local and non-local problems for ordinary differential equations
Allaberen Ashyralyev, Ibrahim Mohammed Ibrahım   +1 more
doaj   +1 more source

Numerical Solutions of Fourth-Order Fractional Integro-Differential Equations [PDF]

Zeitschrift für Naturforschung A, 2010
In this paper, the homotopy perturbation method (HPM) is developed to obtain numerical solutions of linear and nonlinear boundary value problems for fourth-order fractional integro-differential equations. The fractional derivatives are described in the Caputo sense.
Sezer, Sefa Anil, Kaplan, Yasemin, Yildirim, Ahmet   +2 more
openaire   +3 more sources

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

Oscillation of fourth-order strongly noncanonical differential equations with delay argument

Advances in Difference Equations, 2019
The aim of this paper is to study oscillatory properties of the fourth-order strongly noncanonical equation of the form (r3(t)(r2(t)(r1(t)y′(t))′)′)′+p(t)y(τ(t))=0, $$ \bigl(r_{3}(t) \bigl(r_{2}(t) \bigl(r_{1}(t)y'(t) \bigr)' \bigr)' \bigr)'+p(t)y \bigl(
B. Baculikova, J. Dzurina
doaj   +1 more source

Oscillation Criteria of Fourth-Order Differential Equations with Delay Terms

Journal of Function Spaces, 2022
The aim of this paper is to derive oscillation criteria of the following fourth-order differential equation with delay term rxz′′′xγ′+∑i=1nqixfzηix=0, under the assumption ∫x0∞r−1/γsds=∞. The results are based on comparison with the oscillatory behaviour
Shoura Ahmed Balatta, Ishak Hashim, Ahmad Sami Bataineh, Eddie Shahril Ismail   +3 more
doaj   +1 more source

Anomalous scaling in random shell models for passive scalars

, 1996
A shell-model version of Kraichnan's (1994 {\it Phys. Rev. Lett. \bf 72}, 1016) passive scalar problem is introduced which is inspired from the model of Jensen, Paladin and Vulpiani (1992 {\it Phys. Rev. A\bf 45}, 7214).
A. L. Fairhall, A. M. Obukhov, A. M. Obukhov, A. Pumir, A. Wirth, D. Bernard, D. E. Knuth, D. Pisarenko, E. B. Gledzer, H. A. Rose, K. Gawedzki, K. R. Sreenivasan, L. Biferale, L. Kadanoff, L. Kadanoff, M. Chertkov, M. Chertkov, M. Chertkov, M. H. Jensen, M. H. Jensen, M. Vergassola, M. Yamada, M. Yamada, P. E. Kloeden, R. Benzi, R. Benzi, R. Benzi, R. H. Kraichnan, R. H. Kraichnan, R. H. Kraichnan, U. Frisch   +30 more
core   +3 more sources

Predicting and Comparing the Subjective Health Experience of Older Cancer Survivors and Non‐Cancer Survivors: A Modeling Approach

Aging and Cancer, EarlyView.
This study underscores the significant influence of frailty and vitality on the subjective health experience of older cancer survivors with acceptance and control emerging as salient mediators. These findings affirm the conceptual and empirical robustness of the model highlighting its potential utility in shaping future interventions for older cancer ...
Damien S. E. Broekharst, Sjaak Bloem, Eline J. Mertens, Nathascha Hanzen, Michel van Agthoven   +4 more
wiley   +1 more source

Direct numerical method for solving a class of fourth-order partial differential equation [PDF]

, 2016
In this paper, we classified a class of fourth-order partial differential equations (PDEs) to be fourth-order PDE of type I, II, III and IV. The PDE of type IV is solved by using an efficient numerical method.
Hussain, Kasim Abbas, Ismail, Fudziah, Senu, Norazak   +2 more
core  

Four dimensional Lie symmetry algebras and fourth order ordinary differential equations

, 2002
Realizations of four dimensional Lie algebras as vector fields in the plane are explicitly constructed. Fourth order ordinary differential equations which admit such Lie symmetry algebras are derived.
Bianchi L, Bianchi L, Clarkson P A, González-López A, Hawkins T, Ibragimov N H, Patera J   +6 more
core   +5 more sources

Lessons Learned From a Delayed‐Start Trial of Modafinil for Freezing of Gait in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Freezing of gait (FOG) in people with Parkinson's disease (PwPD) is debilitating and has limited treatments. Modafinil modulates beta/gamma band activity in the pedunculopontine nucleus (PPN), like PPN deep brain stimulation. We therefore tested the hypothesis that Modafinil would improve FOG in PwPD.
Tuhin Virmani, Lakshmi Pillai, Reid D. Landes, Aliyah Glover, Shannon Doerhoff, Jennifer Kleiner, Mitesh Lotia, Rohit Dhall, Edgar Garcia‐Rill   +8 more
wiley   +1 more source