Results 11 to 20 of about 3,903,690 (398)
Semi‐supervised classification of fundus images combined with CNN and GCN
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan +8 more
wiley +1 more source
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Background and purpose For postoperative breast cancer patients, deformable image registration (DIR) is challenged due to the large deformations and non‐correspondence caused by tumor resection and clip insertion. To deal with it, three metrics (fiducial‐, region‐, and intensity‐based) were jointly used in DIR algorithm for improved accuracy ...
Xin Xie +6 more
wiley +1 more source
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract This study aimed to evaluate the clinical beam commissioning results and lateral penumbra characteristics of our new pencil beam scanning (PBS) proton therapy using a multi‐leaf collimator (MLC) calculated by use of a commercial Monte Carlo dose engine.
Yuki Tominaga +5 more
wiley +1 more source
Partition Method for Solving Boundary Value Problem Using B-Spline Functions [PDF]
Engineering and Technology Journal, 2009 This paper is concerned with the approximated solution of linear two-pointsboundary value problem (LTPBVP) using Partition method with the aid of B-Splinefunctions as basis functions. The result of this method is compared with the exactsolution.
Bushra E. Kashem
doaj +1 more source
TWO-DIMENSIONAL HYBRIDS WITH MIXED BOUNDARY VALUE PROBLEMS
Acta Polytechnica, 2016 Boundary value problems are considered on a simplex F in the real Euclidean space R2. The recent discovery of new families of special functions, orthogonal on F, makes it possible to consider not only the Dirichlet or Neumann boundary value problems on F,
Marzena Szajewska +1 more
doaj +1 more source
MULTIDIMENSIONAL HYBRID BOUNDARY VALUE PROBLEM
Acta Polytechnica, 2018 The purpose of this paper is to discuss three types of boundary conditions for few families of special functions orthogonal on the fundamental region. Boundary value problems are considered on a simplex F in the real Euclidean space Rn of dimension n >
Marzena Szajewska +1 more
doaj +1 more source
Boundary value problem for the four-dimensional Gellerstedt equation [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2021 In this work, the solvability of the problem with Neumann and Dirichlet boundary conditions for the Gellerstedt equation in four variables is investigated. The energy integral method is used to prove the uniqueness of the solution to the problem.
A.S. Berdyshev, A.R. Ryskan
doaj +3 more sources
RIEMANN BOUNDARY-VALUE PROBLEM ON CASSINI SPIRALS
Проблемы анализа, 2021 Recently, a number of papers has been published concerning the Riemann boundary-value problems on spiral-like arcs. In all these works, the spiral has the shape close to concentric circles, i. e., with equal rates of torsion in all directions.
L. Zhixin, B. A. Kats
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A boundary-value problem for cold plasma dynamics [PDF]
, 2002 A weak Guderley-Morawetz problem is formulated for a mixed elliptic-hyperbolic system that arises in models of wave propagation in cold plasma. Weak solutions are shown to exist in a weighted Hilbert space.
Otway, Thomas H.
core +3 more sources
On Three-Point Boundary Value Problem
Mathematical Modelling and Analysis, 2016 Three-point boundary value problems for the second order nonlinear ordinary differential equations are considered. Existence of solutions are established by using the quasilinearization approach.
Nadezhda Sveikate
doaj +1 more source