Results 51 to 60 of about 1,216,047 (292)

Bifurcation scenarios in an ordinary differential equation with constant and distributed delay: A case study [PDF]

, 2018
In this article we consider a model introduced by Ucar in order to simply describe chaotic behaviour with a one dimensional ODE containing a constant delay. We study the bifurcation problem of the equilibria and we obtain an approximation of the periodic
Caraballo Garrido, Tomás, Colucci, Renato, Guerrini, Luca   +2 more
core   +2 more sources

Spectrum design using distributed delay [PDF]

International Journal of Dynamics and Control, 2014
This paper focuses on the problem of designing the rightmost eigenvalues of linear scalar distributed delay systems. We consider two different but complementary methods: generalized stability charts and matrix Lambert W functions. The generalized stability charts are based on the intersection of Hopf and fold surfaces that provide important insight ...
Wei Feng, Bachrathy, Dániel, Orosz Gabor, Ulsoy A Galip   +3 more
openaire   +1 more source

The Fate (Outcome) of Clinically Apparent Single Lesion and Oligofocal Nephroblastomatosis Treated According to SIOP/GPOH Protocols for Wilms Tumor

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter, Jens‐Peter Schenk, Jenny Wegert, Manfred Gessler, Leo Kager, Stefan Wagenpfeil, Marina Müller, Jean‐Michel Wolff, Joerg Fuchs, Steven W. Warmann, Clemens‐Magnus Meier, Jochen Hubertus, Christian Rübe, Christian Vokuhl, Patrick Melchior, Lena Tschirner, Norbert Graf, Rhoikos Furtwängler   +17 more
wiley   +1 more source

A Real-Time Delay-Sensitive Communication Approach Based on Distributed Processing

IEEE Access, 2017
This paper proposes a delay-sensitive communication approach based on distributed processing for real-time applications that provide interactive services for multiple users in order to minimize the delay considering both admissible delay and delay ...
Akio Kawabata, Bijoy Chand Chatterjee, Seydou Ba, Eiji Oki   +3 more
doaj   +1 more source

Global dynamics and optimal harvesting in a stochastic two-predators one-prey system with distributed delays and Lévy noise

Journal of Biological Dynamics, 2020
In this paper, we first investigate a stochastic two-predators one-prey model with Lévy noise and distributed delays. The global dynamical behaviour is discussed.
Nafeisha Tuerxun, Xamxinur Abdurahman, Zhidong Teng   +2 more
doaj   +1 more source

Dynamical analysis of a COVID-19 model with human-to-human and environment-to-human transmissions and distributed delays

Mathematics in Applied Sciences and Engineering, 2023
SARS-CoV-2 can survive in different environments and remain infectious for several days, which presents challenges to eliminating infectious diseases. It encourages researchers to study the effects of SARS CoV-2 on the environment.
Jie Xu, Yayuan Lei, Tariq Abdullah, Gang Huang   +3 more
doaj   +1 more source

Delayed feedback control of unstable steady states with high-frequency modulation of the delay

, 2013
We analyze the stabilization of unstable steady states by delayed feedback control with a periodic time-varying delay in the regime of a high-frequency modulation of the delay.
Gjurchinovski, Aleksandar, Jüngling, Thomas, Schöll, Eckehard, Urumov, Viktor   +3 more
core   +1 more source

Delay-Adaptive Distributed Stochastic Optimization

Proceedings of the AAAI Conference on Artificial Intelligence, 2020
In large-scale optimization problems, distributed asynchronous stochastic gradient descent (DASGD) is a commonly used algorithm. In most applications, there are often a large number of computing nodes asynchronously computing gradient information. As such, the gradient information received at a given iteration is often stale.
Zhaolin Ren, Zhengyuan Zhou, Linhai Qiu, Ajay Deshpande, Jayant Kalagnanam   +4 more
openaire   +2 more sources

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song, Jonathan Baron, Carlos Chavez Perez, Sidharth Ramesh, Jane Minturn, Kavita A. Desai, Amish C. Shah, Jean M. Belasco, Kristina A. Cole, Michael J. Fisher, Phillip B. Storm, Peter M. Madsen, Goldie Kurtz, Robert A. Lustig, Christine Hill‐Kayser, Michael J. LaRiviere   +15 more
wiley   +1 more source

Unsolved problem about stability of stochastic difference equations with continuous time and distributed delay

Modern Stochastics: Theory and Applications
Despite the fact that the theory of stability of continuous-time difference equations has a long history, is well developed and very popular in research, there is a simple and clearly formulated problem about the stability of stochastic difference ...
Leonid Shaikhet
doaj   +1 more source