Results 81 to 90 of about 3,531 (298)

A comparative analysis of curvilinear configurations of the V-dipole antenna

Физика волновых процессов и радиотехнические системы
Background. Curvilinear dipole antenna structures have been established as solution to the directivity problem associated with conventional dipole antennas, with length greater than half a wavelength.
Ayotunde A. Ayorinde, Sulaiman A. Adekola, Ike Mowete   +2 more
doaj   +1 more source

The nonlocal boundary value problem for one-dimensional backward Kolmogorov equation and associated semigroup

Karpatsʹkì Matematičnì Publìkacìï, 2019
This paper is devoted to a partial differential equation approach to the problem of construction of Feller semigroups associated with one-dimensional diffusion processes with boundary conditions in theory of stochastic processes.
R.V. Shevchuk, I.Ya. Savka, Z.M. Nytrebych   +2 more
doaj   +1 more source

Interaction of FXTAS Family History and College Degree Attainment Predicts Trajectories of Cognitive and Motor Symptoms in FMR1 Premutation Carrier Women

American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, EarlyView.
ABSTRACT The present longitudinal study focuses on FMR1 premutation carrier women during midlife and early old age (n = 115). Bringing together the genetic risk factor of a family history of FXTAS and the environmental protective factor of higher education, the goal of the study was to determine how these factors potentially interact to predict self ...
Jinkuk Hong, Leann Smith DaWalt, Jessica Klusek, Elizabeth M. Berry‐Kravis, Marsha Mailick   +4 more
wiley   +1 more source

Study on the Accuracy Improvement of the Second-Kind Fredholm Integral Equations by Using the Buffa-Christiansen Functions with MLFMA

International Journal of Antennas and Propagation, 2016
Former works show that the accuracy of the second-kind integral equations can be improved dramatically by using the rotated Buffa-Christiansen (BC) functions as the testing functions, and sometimes their accuracy can be even better than the first-kind ...
Yue-Qian Wu, Xin-Qing Sheng, Xing-Yue Guo, Hai-Jing Zhou   +3 more
doaj   +1 more source

CALCULATION OF CUSTOMER SAVINGS USING THE DEFINITE INTEGRAL [PDF]

ეკონომიკური პროფილი
The article focuses on the application of mathematical methods in economics, in particular discussing economic problems that are easily solved using definite integral.
Maka Lomtadze
doaj   +1 more source

Convergence of the Galerkin method in the problem of electromagnetic wave diffraction on a system of solids and curvilinear screens

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. The purpose of this study is to prove the convergence of the projection method in the problem of diffraction of electromagnetic waves by scatterers of a complex shape. Material and methods.
Aleksey A. Tsupak
doaj   +1 more source

An algebraic cubature formula on curvilinear polygons

, 2011
We implement in Matlab a Gauss-like cubature formula on bivariate domains whose boundary is a piecewise smooth Jordan curve (curvilinear polygons).
A. Sommariva, Santin, G., Vianello, M., Santin G., G. Santin, SANTIN, GABRIELE, M. Vianello, Sommariva, A., SOMMARIVA, ALVISE, VIANELLO, MARCO, Sommariva A., Vianello M.   +11 more
core   +1 more source

Cerebrospinal Fluid Amyloid‐β Biomarkers Predict Future Hemorrhage in Patients with Cerebral Amyloid Angiopathy

Annals of Neurology, EarlyView.
Objective Accurately predicting future hemorrhagic events in patients with cerebral amyloid angiopathy (CAA) remains a major clinical challenge. It is unknown whether cerebrospinal fluid (CSF) biomarkers of amyloid‐beta (Aβ) pathology are associated with increased hemorrhage risk in this population.
Philipp Arndt, Malte Pfister, Valentina Perosa, Hendrik Mattern, Melis Tas, Lara Holzheimer, Johanna Engel, Marc Dörner, Marwa Al‐Dubai, Cornelia Garz, Eya Khadhraoui, Sebastian J. Müller, Patrick Müller, Sven G. Meuth, Katja Neumann, Stefanie Schreiber   +15 more
wiley   +1 more source

Implementation of Higher-Order Two-Dimensional Singular Elements in FEM codes and Numerical Results problems [PDF]

, 2003
This paper presents strategies and schemes to implement higher-order two dimensional singular elements in Finite Elements codes.
Lombardi, Guido
core  

Numerical integration of the contravariant integral form of the Navier–Stokes equations in time-dependent curvilinear coordinate systems for three-dimensional free surface flows [PDF]

, 2019
We propose a three-dimensional non-hydrostatic shock-capturing numerical model for the simulation of wave propagation, transformation and breaking, which is based on an original integral formulation of the contravariant Navier–Stokes equations, devoid of
giovanni Cannata, chiara Petrelli, francesco Gallerano, luca Barsi   +3 more
core   +1 more source