Results 31 to 40 of about 1,540,986 (287)

Weak resonances of periodical nonlinear oscillations

Lietuvos Matematikos Rinkinys, 2017
The mathematical model of nonlinear oscillations of weightless string is analyzed. Coefficients of the mathematical model and initial conditions are periodical functions of the space variable.
Olga Lavcel-Budko, Aleksandras Krylovas   +1 more
doaj   +1 more source

Terminal One Axis Stabilization Properties of a Spinning Satellite Employing Simple Magnetic Attitude Control

Mathematics, 2023
A spin stabilized satellite reorientation maneuver in the inertial space is investigated. Spin axis pointing and nutation damping magnetic attitude control algorithms are utilized.
Dmitry Roldugin, Mikhail Ovchinnikov
doaj   +1 more source

Application of the method of stationary phase to weakly nonlinear hyperbolic systems asymptotic solving

Lietuvos Matematikos Rinkinys, 2004
Method of averaging of first order hyperbolic system with small parameter is presented. The mathe­matic investigate of this method is based on the method of stationary phase.
Aleksandras Krylovas
doaj   +3 more sources

Asymptotic solution of the mathematical model of nonlinear oscillations of absolutely elastic inextensible weightless string

Nonlinear Analysis, 2010
The mathematical model of nonlinear oscillations of weightless string is analyzed. To find an asymptotic solution of the problem, uniformly valid in a long interval of time, an averaged system of integral differential equations has been constructed.
A. Krylovas, O. Lavcel-Budko, P. Miškinis   +2 more
doaj   +1 more source

Equitable transform applied to phenology and temperature in a changing climate: Scaling to maintain individuality

Ecosphere, 2020
We describe an equitable transform that can be used to estimate missing data points, determine systematic patterns in data, observe baseline changes, and detect different amplitudes in replicated sequences.
Cassandra Elphinstone, Greg H. R. Henry
doaj   +1 more source

Survival Outcomes and Complications Among Canadian Children With Retinoblastoma: A Population‐Based Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine, Ofélie Trudeau‐Ferrin, Caroline Laverdière, Patrick Hamel, Rosanne Superstein, Bénédicte Koukoui, Carole Provost, Paul C. Nathan, Vijay Ramaswamy, Furqan Shaikh, Brenda Gallie, Ashwin Mallipatna, Stephanie Kletke, Helen Dimaras, Hallie Coltin   +14 more
wiley   +1 more source

Three-Dimensional Mathematical Modeling and Simulation of the Impurity Diffusion Process Under the Given Statistics of Systems of Internal Point Mass Sources

Modelling
A three-dimensional mathematical model and simulation of the impurity diffusion process are developed under the given statistical characteristics of the system of internal stochastically disposed point sources of mass.
Petro Pukach, Olha Chernukha, Yurii Chernukha, Myroslava Vovk   +3 more
doaj   +1 more source

Analysis of asymptotics for a model of nonlinear oscillations of the absolute elastic weightless string

Lietuvos Matematikos Rinkinys, 2009
The mathematical model of string nonlinear oscillations is presented. To found the asymptotic solution of the problem an averaging scheme was constructed in cited latest work of the second author. In this paper a methodology for construction special form
Olga Lavcel, Aleksandras Krylovas
doaj   +1 more source

Outcomes of Live Virus Vaccination in Patients With Vascular Anomalies Being Treated With Sirolimus

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Live vaccination in patients with vascular anomalies (VA) receiving sirolimus remains controversial due to immunosuppressive effects and theoretical risks. Procedure This single‐center retrospective study included patients with VA less than 4 years old at the start of sirolimus therapy who were incompletely vaccinated.
Svatava Merkle, Kiersten Ricci, Kelly Blache, Rebecca A. Marsh, Adrienne M. Hammill, Elissa Engel   +5 more
wiley   +1 more source

Asymptotical analysis of some coupled nonlinear wave equations

Mathematical Modelling and Analysis, 2011
We consider coupled nonlinear equations modelling a family of travelling wave solutions. The goal of our work is to show that the method of internal averaging along characteristics can be used for wide classes of coupled non-linear wave equations such as
Aleksandras Krylovas, Rima Kriauzienė
doaj   +1 more source