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NA Digest, V. 20, # 18

NA Digest Sunday, May 10, 2020 Volume 20 : Issue 18


Today's Editor:

Daniel M. Dunlavy
Sandia National Labs
dmdunla@sandia.gov

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From: Vincent Acary vincent.acary@inria.fr
Date: May 05, 2020
Subject: Simulation software Siconos release 4.3.0 is out


A brand new Siconos 4.3.0 release is out !!
http://siconos.gforge.inria.fr

Siconos is an open-source scientific software primarily targeted at
modeling and simulating nonsmooth dynamical systems in C++ and in Python:
- Mechanical systems (rigid or solid) with unilateral contact and
Coulomb friction and impact (nonsmooth mechanics, contact dynamics,
multibody systems dynamics or granular materials).
- Switched Electrical Circuit such as electrical circuits with ideal
and piecewise linear components: power converter, rectifier,
Phase-Locked Loop (PLL) or Analog-to-Digital converter.
- Sliding mode control systems.
- Biology (Gene regulatory network).

Other applications are found in Systems and Control (hybrid systems,
differential inclusions, optimal control with state constraints),
Optimization (Complementarity systems and Variational inequalities),
Fluid Mechanics, and Computer Graphics.

The source code (zip and tar.gz) can be found on github :
https://github.com/siconos/siconos/releases
We are now working on the release candidate 4.4.0.rc that can be
forked from our github repo master branch.

Binary packages of the 4.2.0 for linuxes for Debian bullseye (testing)
are available here:
https://packages.debian.org/source/bullseye/siconos
The new version 4.3.0 will be available soon.

We have also improved our documentation at
http://siconos.gforge.inria.fr even if it still lacks some polish. We
have also started to feed our YouTube channel,
https://www.youtube.com/channel/UCgv2siTCJeSdWFPTDk71Iyw So, if you
have any nice applications made with Siconos, please do not hesitate
to contribute. We are interested in showcasing Siconos at work!

For discussions, use the siconos-users mailing list


From: Kris ONeill oneill@siam.org
Date: May 04, 2020
Subject: New Book, Algorithms from THE BOOK


Algorithms from THE BOOK
by Kenneth Lange

This text cuts across discipline boundaries to highlight some of the
most famous and successful algorithms. Readers are given a close look
at some basic algorithms to help them understand both how these
algorithms operate and how one can assemble complex algorithms from
simpler building blocks. Most of the algorithm descriptions are
accompanied by Julia code, an ideal language for scientific
computing. This code is immediately available for
experimentation. Written in clear, instructive prose consistent with
mathematical rigor, Algorithms from THE BOOK includes a large number
of classroom-tested exercises and background reading material.

2020 / xiii + 214 pages / Softcover / 978-1-611976-16-8 / List $69.00 /
SIAM Member $48.30 / OT168

Book details:
https://my.siam.org/Store/Product/viewproduct/?ProductId=31624737


From: Kamryn Scrivens scrivens@siam.org
Date: May 04, 2020
Subject: New Book, Solving Problems in Multiply Connected Domains


Solving Problems in Multiply Connected Domains, by Darren Crowdy

This book describes a novel mathematical framework for solving
problems in two-dimensional, multiply connected regions. The framework
is built on a central theoretical concept: the prime function, whose
significance for the applied sciences, especially for solving problems
in multiply connected domains, has been missed until recent work by
the author.

Link to book: https://bookstore.siam.org/cb97
Browse more SIAM books by visiting: https://bookstore.siam.org


From: Ramakanth Munipalli ramakanth.munipalli@us.af.mil
Date: May 05, 2020
Subject: Data Scientist/Applied Mathematician Position


This position will offer an opportunity to apply state of the art
methods in model reduction and machine learning to practical problems
in aerospace propulsion. Work involves developing and deploying
numerical algorithms and computer codes which interface with high
fidelity numerical simulations as well as experiments. The successful
applicant will work in a team of researchers investigating unsteady
combustion phenomena, and interact with experts from academia and
industry. Research will lead to procedures and publications that can
be very influential in the field.

Must be a US citizen
Must be able to pass a background check

Minimum Education: Ph.D. in Applied Mathematics or Engineering

Experience/ Training: Must have a strong background in Numerical
Methods, and one or more of (a) Galerkin-projection based reduced
order models, (b) Machine learning, data driven computing, (c) Data
assimilation and time series analysis, (d) Convex optimization.

Desirable: Background in turbulent fluid flow computation, linear
algebra, statistics, functional analysis

Primary Location: United States, Edwards AFB

Please apply via:
https://www.linkedin.com/jobs/view/1851207956
or
https://california.jobing.com/jacobs-studio/data-scientistapplied-mathematician


From: Christa Reimer christa.reimer@uni-bayreuth.de
Date: May 08, 2020
Subject: Research Assistant Position, Numerical Fluid Dynamics, Univ Bayreuth


Topics:
- PDE based data assimilation and model reduction of turbulent flow
- Adjoint based Identification of Network Flow, Model Reduction and
Sensitivity Analysis

The major topic is data assimilation of a compressible jet flow and
aeroacoustics. Applications are in explosive volcanic, impinging jet
cooling and loss-of-vaccum- events in fusion reactors. The candidate
is required to have a sound working knowledge in numerical
methods. Knowledge in adjoint methods and skills in experimental fluid
mechanics would be an advantage.

Prerequisits:
- Master or equivalent with specialisation in numerical analysis,
numerical fluid mechanics, scientific computing or related, issued
by a top International University.
- excellent mathematical skills are essential
- experience with at least one of the following topics (in this
order): data assimilation, adjoint methods, critical transitions of
dynamical systems, nonlinear stability analysis, or development of
(or substantial contribution to) a compressible DNS code for
turbulent flows.
- experience in the use of a programming language: e.g. Fortran, C,
Python, Matlab, Julia
- fluency in English
- basic German language skills and willingness to achieve a
"Goethe-Zertifikat C1" within six months of employment.

Teaching obligations: 5h/week during the semester.
Salary level: TV-L E13.
Start date: Immediately

For further scientific (!) information regarding the positions contact
joern.sesterhenn@uni-bayreuth.de. Administrative questions or
applications with cover letter stating your strenghts in one of the
above fields, CV, (master-)diploma, grade sheets and contact
information of three possible referees can be addressed to
christa.reimer@uni-bayreuth.de Please send your application as ONE pdf.


From: Benjamin Stamm best@mathcces.rwth-aachen.de
Date: May 06, 2020
Subject: Postdoc Position, Computational Mathematics, RWTH Aachen


The group of Computational Mathematics [1] at the Center for
Computational Engineering Science at RWTH Aachen University invites
applicants for a Postdoc position (100% TVL-E13 at the German salary
scale, initially for 2 years and renewable to three years in total) in
the area of computational mathematics and computational chemistry.

The group develops new methods for problems arising in theoretical
chemistry, physics and material science with focus on a solid
mathematical framework, but many projects of the group are
interdisciplinary such as the project associated to the current
opening.

For this project, a PhD in applied mathematics or computational
chemistry is expected. Excellent knowledge in computational
mathematics/scientific computing and/or theoretical chemistry as well
as advanced programming skills are expected. Please send the
application including the CV and a statement of motivation to
office@mathcces.rwth-aachen.de. Please contact Prof. Dr. B. Stamm
(best@mathcces.rwth-aachen.de) if you have further questions. RWTH
Aachen University particularly welcomes and encourages applications
from women, disabled people and ethnic minority groups.

[1]: http://www.mathcces.rwth-aachen.de/5people/stamm/start


From: George Biros gbiros@acm.org
Date: May 06, 2020
Subject: Postdoc Positions, Computational Science, UT Austin


The Center for Predictive Engineering and Computational Sciences in
the Oden Institute for Computational Engineering and Sciences at the
University of Texas at Austin is searching for Postdoctoral Scholars
in a number of domains relevant to high fidelity simulation of
inductively coupled plasma torches. Applicants with a strong
background in any of the following areas are sought: turbulence
modeling and simulation, plasma kinetics, finite element and spectral
methods, uncertainty quantification, and exascale computing algorithms
and technologies. Applicants must have a Doctorate in Science,
Engineering, Computer Science, Computational Science, Applied
Mathematics, or a related technical field. Candidates with prior
software experience in large-scale parallel code development, MPI,
C++, multi-threading, GPGPU programming, git revision control, and
LaTeX are preferred.

For more information about the project and team, visit
pecos.oden.utexas.edu. To apply, please send a cover letter
describing your interests, a CV, and a list of three references to
pecos_recruit@oden.utexas.edu.



From: Kathrin Welker welker@hsu-hh.de
Date: May 07, 2020
Subject: PhD/Postdoc Position, Simulation-based design optimization,

HSU Hamburg, Germany

The Helmut-Schmidt-University / University of the Federal Armed Forces
in Hamburg (Germany) offers a position as a Research Assistant (f/m/d)
to be filled by either a PhD student or a post-doctoral
researcher. The position is initially limited to 3 years and can be
extended depending on performance.

The successful candidate will be working in the the BWFG
interdisciplinary research project "Simulation-based design
optimization of dynamic systems under uncertainties" (principal
investigator: Prof. Dr. Kathrin Welker, HSU Hamburg). The project is
carried out in collaboration with research partners from the
Department of Mechanical Engineering of the Technical University of
Hamburg and from the Department of Mathematics from Hamburg
University.

The main aim of the project is to develop new innovative simulation
methods for the robust optimization of complex components. By
combining methods from applied mathematics and theoretical mechanical
engineering, mathematical models, which involve dynamic operating
conditions and uncertain manufacturing processes, will be
developed. In particular, a robust design is important for
maintenance-intensive and maintenance-free products from the Hamburg
aviation and medical technology environment.

For more information, see: https://bit.ly/3chEtgc

Inquiries and applications (including at least a cover letter, CV,
certificates of academic degrees and references for possible
recommendation letters) should be directed by e-mail to
Prof. Dr. Kathrin Welker (welker@hsu-hh.de) by June 15, 2020. Late
applications will be considered until the position is filled.


From: Axel Kroener axel.kroener@wias-berlin.de
Date: May 05, 2020
Subject: PhD Position, Optimisation, Humboldt Univ Berlin


Applications are invited for a position in the research project
'Equilibria for Energy Markets with Transport'; the research will
concentrate on modelling, analytic, optimisation and numerical aspects
of generalised Nash equilibrium problems with partial differential
equation constraints; tasks for own scientific qualification
(doctorate). The position will be preliminarily limited until
31.12.2021.

Requirements: A completed university degree in mathematics or a
related discipline (preferably with very good results); knowledge of
continuous optimisation and applied functional analysis; experience in
the field of numerical and computer-aided implementation; a high
proficiency in spoken and written English.

Please send your application (including motivation letter, CV, and two
reference letters) and quoting the reference number DR/081/20 to
Humboldt-Universitat zu Berlin, Faculty of Mathematics and Natural
Sciences, Department of Mathematics, Prof. Dr. Michael Hintermuller
(located: Rudower Chaussee 25), Unter den Linden 6, 10099 Berlin, or
preferably in electronic form to hint@math.hu-berlin.de (cc to
j.brandt@math.hu-berlin.de).

For further information see:
https://www.personalabteilung.hu-berlin.de/de/stellenausschreibungen.

Deadline: June 6, 2020.



From: Gerlind Plonka-Hoch plonka@math.uni-goettingen.de
Date: May 07, 2020
Subject: PhD Positions, Applied Mathematics and Stochastics


The Research Training Group RTG 2088 "Discovering Structure in Complex
Data" at the Georg- August-University Goettingen offers two positions
for Ph.D. candidates beginning a soon as possible. The salary is in
accordance with the German public service salary scale (E13 TV-L) with
75 % for up to three years.

The research projects in this RTG focus on new mathematical concepts
in statistics, optimization, and inverse problems. Detailed
information for the PhD positions can be found at
https://www.uni-goettingen.de/de/305402.html?cid=100683


From: lasiecka lasiecka@memphis.edu
Date: May 04, 2020
Subject: Contents, Evolution Equations & Control Theory, 9 (2)


Evolution Equations & Control Theory
June 2020, Volume 9, Issue 2

On the three dimensional Kelvin-Voigt fluids: global solvability,
exponential stability and exact controllability of Galerkin
approximations, Manil T. Mohan

Regularized solution for a biharmonic equation with discrete data,
Tran Ngoc Thach, Nguyen Huy Tuan and Donal O'Regan

Decay rates for second order evolution equations in Hilbert spaces
with nonlinear time-dependent damping, Jun-Ren Luo and Ti-Jun Xiao

Stochastic porous media equations with divergence Ito noise, Ioana
Ciotir

Null-controllability properties of a fractional wave equation with a
memory term, Umberto Biccari and Mahamadi Warma

Existence of mass-conserving weak solutions to the singular
coagulation equation with multiple fragmentation, Prasanta Kumar Barik

Moving and oblique observations of beams and plates, Philippe Jaming
and Vilmos Komornik

Robust attractors for a Kirchhoff-Boussinesq type equation, Zhijian
Yang, Na Feng and Yanan Li

On a Kirchhoff wave model with nonlocal nonlinear damping, Vando
Narciso

Uniform stabilization of a wave equation with partial Dirichlet
delayed control, Xiaorui Wang and Genqi Xu

Null controllability for a heat equation with dynamic boundary
conditions and drift terms, Abdelaziz Khoutaibi and Lahcen Maniar

On a backward problem for two-dimensional time fractional wave
equation with discrete random data, Nguyen Huy Tuan, Tran Ngoc Thach
and Yong Zhou

Copyright 2020 American Institute of Mathematical Sciences


From: Badih Ghusayni badih@future-in-tech.net
Date: May 05, 2020
Subject: Contents, Mathematics and Computer Science, 15 (3)


Contents, International Journal of Mathematics and Computer Science,
Volume 15, no, 3 (Open Access):

V. Skala, S. A. A. Karim, E. A. Kadir, Scientific Computing and Computer
Graphics with GPU: Application of Projective Geometry and Principle of
Duality.

Walailuk Peanchai, Chawalit Boonpok, Chokchai Viriyapong, Weakly
generalized closed sets in ideal topological spaces.

Hasan A. Haidar, Mohammad N. Abdulrahim, On the Faithfulness of the
Representations of the Extraspecial 2-Groups

Sarhan Falah, Fairouz Sher Ali, Synchronization of Multiplicative
Noise Dissipative Systems under Discretization.

Thawatchai Khumprapussorn, On Beta-Absorbing Submodules.

Prapart Pue-on, Chawalit Boonpok, B-closed sets in B-spaces.

I Gede Tunas, Nadjadji Anwar, Umboro Lasminto, Sukandi Samatan,
Derivation of Nondimensional Synthetic Unit Hydrograph of ITS-2 Using
the 2-Parameter Gamma Distribution.

Fawwaz Doujan Wrikat, On the Complements of Graphs.

Fadi Alrimawi, Hani Kawariq, Fuad A. Abushaheen, Some Matrix and Norm
Inequalities for Positive Definite Matrices.

Ammar S. Issa, Maslina Darus, Generalized Complex Fractional
Derivative and Integral operators for the Unified Class of Analytic
Functions.

Anusorn Simuen, Pattarawan Petchkaew, Ronnason Chinram, Generalized
Subsemigroups and Fuzzy Subsemigroups in Semigroups.

Khaled Mustafa Aljamal, Ahmad Termimi Ab Ghani, Khaled A. Al-Sharo,
Finite groups in which maximal subgroups of Sylow p-subgroups are
nearlyS-permutable.

Patcharee Dunnimit, Araya Wiwatwanich, Duangkamol Poltem, Solutions of
the Fractional Logistics Equations via the Residual Power Series
Method with Adomian Polynomial.

Cemil Tunc, A remark on the qualitative conditions of nonlinear IDEs.

Krishna Kumar Sharma, Vikas Panwar, On Tetranacci Function and
Tetranacci Numbers.

M. Rezaul Hoque Khan, M. Ashraful Hoque, M. Taslim Reza, M. Saifur
Rahman, Performance Analysis of MC-CDMA Based UWB System for Beyond
4G.

O. F. Imaga, S. A. Iyase, S. A. Bishop, On the solvability of a
third-order p-Laplacian m-point boundary value problem at resonance on
the half- line with two dimensional kernel.

Abdulrahman Balfaqih, Hailiza Kamarulhaili, New Result on Jesmanowicz'
conjecture.


End of Digest
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