Registered Data
Contents
- 1 [CT088]
- 1.1 [00947] Statistical analysis of neonatal mortality predictors in Ghana
- 1.2 [00836] Reynolds-blended weights for BDDC in applications to Navier-Stokes equations
- 1.3 [02267] A Massively Parallel Performance Portable Free Space Spectral Poisson Solver for Beam and Plasma Physics Problems
- 1.4 [01997] Robust continuation method for computing solution curves with critical points
[CT088]
[00947] Statistical analysis of neonatal mortality predictors in Ghana
- Session Date & Time : 4D (Aug.24, 15:30-17:10)
- Type : Contributed Talk
- Abstract : In this study, we identify and investigate the main factors influencing newborn mortality in the Ghanaian locality and predict the occurrence of future infant mortality based on the 2017 Demographic and Health Survey data using logistic regression. Our work shows that the child’s weight and sex have a strong correlation with its survival. The study reveals that mortality is more than 50% greater in underweight children and also, 62.7% infant deaths happen in infant males.
- Classification : 62Pxx, 92-11, 92-08, Bio Statistics
- Author(s) :
- Elizabeth Dufie Amankwah (Kwame Nkrumah University of Science and Technology)
- Juliet Amegble Richardson (Kwame Nkrumah University of Science and Technology)
- Solomon Kyei Mensah (Kwame Nkrumah University of Science and Technology)
- Session Date & Time : 4D (Aug.24, 15:30-17:10)
- Type : Contributed Talk
- Abstract : We solve incompressible Navier-Stokes equations by the finite element method with one step of the Balancing Domain Decomposition by Constraints (BDDC) method. This method requires a scaling operator at the interface between subdomains. We introduce a new interface scaling tailored to Navier-Stokes equations. The weights in this averaging consider a local Reynolds number. This Reynolds-blended scaling is compared with several existing approaches on 3D lid-driven cavity and backward-facing step problems.
- Classification : 65Y05
- Author(s) :
- Martin Hanek (Czech Technical University in Prague, Institute of Mathematics of the Czech Academy of Sciences)
[02267] A Massively Parallel Performance Portable Free Space Spectral Poisson Solver for Beam and Plasma Physics Problems
- Session Date & Time : 4D (Aug.24, 15:30-17:10)
- Type : Contributed Talk
- Abstract : Recently, a new fast algorithm for computing volume potentials has been proposed by Vico, Greengard, and Ferrando, which provides a spectral accuracy free-space Poisson equation solver, useful for plasma and beam physics. We write a parallel performance portable implementation in the IPPL library, using the Exascale Computing Project's heFFTe and Kokkos libraries, and MPI for parallelization. A comparison with the traditional Hockney-Eastwood algorithm manifests the memory benefits of using the new algorithm, especially on GPUs.
- Classification : 65Y05, 78A30, 35Q61, 65K05, 65N80
- Author(s) :
- Sonali Mayani (Paul Scherrer Institute)
- Antoine Cerfon (NYU)
- Matthias Frey (University of St. Andrews)
- Veronica Montanaro (Paul Scherrer Institute)
- Sriramkrishnan Muralikrishnan (Jülich Supercomputing Centre)
- Andreas Adelmann (Paul Scherrer Institute)
[01997] Robust continuation method for computing solution curves with critical points
- Session Date & Time : 4D (Aug.24, 15:30-17:10)
- Type : Contributed Talk
- Abstract : To better compute the solution curve of challenging problems, numerical continuation methods have proved to be a very efficient tool. However, these methods can still lead to undesired results, particularly near critical points. This paper will therefore present a robust continuation method that will include two key aspects to solve difficult problems: detection of problematic regions during the solution process and additional steps to deal with them. Numerical examples will be presented.
- Classification : 65Y20, 65Z05, 74S05
- Author(s) :
- Sophie Leger (Université de Moncton)