Results 101 to 110 of about 46,634 (304)

Investigation of stability in a two-delay model of the ultradian oscillations in glucose-insulin regulation

, 2015
In this paper, a two-delay model for the ultradian oscillatory behaviour of the glucose-insulin regulation system is studied. Hill functions are introduced to model nonlinear physiological interactions within this system and ranges on parameters ...
Easton, Jonathan, Angelova, Maia, Huard, B., Huard, Benoit, Angelova, M., Easton, J.F.   +5 more
core   +1 more source

Oscillation and Periodicity of a Second Order Impulsive Delay Differential Equation with a Piecewise Constant Argument [PDF]

, 2017
This paper concerns with the existence of the solutions of a second order impulsive delay differential equation with a piecewise constant argument. Moreover, oscillation, nonoscillation and periodicity of the solutions are investigated.
Karakoc, Fatma, Gizem S. Oztepe, Oztepe, Gizem S., Huseyin Bereketoglu, Bereketoglu, Huseyin, Fatma Karakoc   +5 more
core   +1 more source

Approximate Solution of Delay Differential Equations Using the Collocation Method Based on Bernstien Polynomials???? ???????? ????????? ????????? ????????? ???????? ?????????? ???????? ??? ??????? ???? ?????????

مجلة بغداد للعلوم, 2011
In this paper a modified approach have been used to find the approximate solution of ordinary delay differential equations with constant delay using the collocation method based on Bernstien polynomials.
Baghdad Science Journal
doaj   +1 more source

Comprehensive Assessment of Arterial, Tissue, and Venous Collaterals for Evaluating the Infarct Growth Rate: The Multimodal Collateral Score

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Collaterals are crucial factors that influence the infarct growth rate (IGR). We aimed to determine whether a comprehensive multimodal collateral score (MCS), incorporating collateral assessment at the arterial, tissue, and venous levels, is associated with functional independence and provides incremental prognostic value over ...
Giorgio Busto, Umberto Pensato, Ilaria Casetta, Giorgio U. Marcello, Angelo Barra, Anna Poggesi, Edoardo Carlesi, Sara Mancini, Andrea Ginestroni, Vittorio Miele, Alessandro Padovani, Andrea Morotti, Enrico Fainardi   +12 more
wiley   +1 more source

Stabilizing effect of delay distribution for a class of second-order systems without instantaneous feedback

, 2009
In many situations in physics, engineering and biology time delays arise naturally due to the time needed to transport information from one part of the system to another and/or to react to incoming information. When differential equations are used in the
Gabor Kiss, Bernd Krauskopf, Kiss, G, Krauskopf, B   +3 more
core  

Oscillation of a second order delay differential equations [PDF]

, 1997
summary:In this paper, we study the oscillatory behavior of the solutions of the delay differential equation of the form \[ \left(\frac{1}{r(t)}y^{\prime }(t)\right)^{\prime }+p(t)y(\tau (t))= 0.
Jozef Dzurina, Džurina, Jozef
core  

Vibration suppression analysis of iced transmission lines under axial time-delay velocity feedback strategy

Theoretical and Applied Mechanics Letters
To ensure the safety of power energy transmission channel and mitigate the harm caused by galloping of iced transmission lines, the axial time-delay velocity feedback strategy is adopted to suppress the galloping.
Maoming Hu, Guangyun Min, Wanyu Bao, Bowen Tian, Shuguang Yang, Mengqi Cai   +5 more
doaj   +1 more source

Accurate numerical scheme for singularly perturbed parabolic delay differential equation. [PDF]

BMC Res Notes, 2021
Woldaregay MM, Duressa GF.
europepmc   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni, Cecile Pagan, Antony Citterio‐Quentin, Isabelle Rouvet, Giulia Dingeo, Cyril Hanin, Claudine Laurent‐Levinson, Samia Pichard, Bénédicte Héron, Clément Gourguechon, Daniele Mandia, Jerome Guitton, Carole Lacout, Nicolas Schleinitz, Florient Potier, Olivier Flabeau, Elsa Besse‐Pinot, Foudil Lamari, Magali Pettazzoni, Yann Nadjar   +19 more
wiley   +1 more source

Time Delay and Noise Explaining Cyclical Fluctuations in Prices of Commodities [PDF]

This paper suggests to model jointly time delay and random effects in economics and finance. It proposes to explain the random and often cyclical fluctuations in commodity prices as a consequence of the interplay between external noise and time delays ...
Uwe Küchler, Eckhard Platen
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