Results 21 to 30 of about 441,131 (218)

The asymptotical analysis of the mathematical model of the fluid flow in the elastic pipe

Lietuvos Matematikos Rinkinys, 2011
In this paper the model of the fluid flow in elastic pipe is studied. This model is described by the system of hyperbolic equations. The asymptotic analysis of these equations allows to investigate the conditions of the interaction of waves in the ...
Aleksandras Krylovas, Rima Kriauzienė
doaj   +1 more source

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

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine, Hallie Coltin, Sylvia Cheng, Lucie Lafay‐Cousin, Vanan Issai Magimairajan, Craig Erker, Stéphanie Vairy, Lynette Bowes, Adam Fleming, Donna Johnston, Sarah McKillop, Roona Sinha, Julie Bennett, Christina Coleman, Laura Wheaton, Shayna Zelcer, Samuele Renzi, Thai Hoa Tran   +17 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

Comparative Drug Response Profiling in Neuroblastoma Cell Lines and Patient‐Derived Tumor Organoids

Pediatric Blood &Cancer, EarlyView.
ABSTRACT High‐risk neuroblastoma remains a leading cause of pediatric cancer mortality, and improved preclinical models are needed to guide therapeutic developments. We screened seven high‐risk neuroblastoma cell lines and three patient‐derived tumor organoids with 528 compounds alongside bone marrow controls, and compared them with external datasets ...
Krzysztof Wierbiłowicz, Se Whee Sammy Park, Aironas Los, Ernest Liu, Nona Struyf, Tom Erkers, Sören Lehmann, Jan J. Molenaar, Jakob Stenman, Olli Kallioniemi, Päivi Östling, Brinton Seashore‐Ludlow, Kasper Karlsson   +12 more
wiley   +1 more source