NA Digest Tuesday, December 16, 2014 Volume 14 : Issue 44

Today's Editor:
Daniel M. Dunlavy
Sandia National Labs

Submissions for NA Digest:


From: Nick Trefethen
Date: December 12, 2014
Subject: Chebfun V5.1 release and users day Mar 2015

We are pleased to announce the release of Chebfun Version 5.1 for
numerical computing with 1D and 2D functions. The main new features

- Fast solution of ODE initial-value problems via "\"
- Updated CHEBGUI interface for ODE, PDE, and eigenvalues
- New "trig" capabilities for periodic functions and ODEs
- New function collections gallery, gallerytrig, and gallery2

The gallery commands contain examples of interesting 1D and 2D
functions, analogous to the MATLAB gallery collection of interesting
matrices. Please explore and send us ideas for further functions to
include! See for download, updated users
guide, and hundreds of Chebfun Examples. See the web site also to
sign up (before January 19 please) for the Chebfun users day in
Oxford, March 17.


From: Karl Rupp
Date: December 14, 2014
Subject: ViennaCL 1.6/ViennaCLBench 1.0 released

ViennaCL is a free open source linear algebra library (MIT license)
for dense and sparse linear algebra using CUDA, OpenCL, or OpenMP.
The highlights of the latest 1.6.x release series are:
- Our implementation of a sliced ELLPACK format for sparse matrices
- Pipelined implementations of CG, BiCGStab and GMRES
- Our implementation of a fast CSR-SpMV kernel from SC'14
- An OpenCL device database for optimized kernels at runtime

More information and download:

ViennaCLBench is a GUI-based benchmark application build on top of
ViennaCL to quickly evaluate the performance of OpenCL devices
available on a system. Benchmarks:
- Host-device transfer rates
- Vector operations (similar to STREAM-benchmark)
- Dense matrix-matrix multiplications
- Sparse matrix-vector multiplications (+MatrixMarket)

User-provided matrices in MatrixMarket format can be loaded to quickly
determine the fastest storage format for sparse matrix-vector
multiplications. A built-in browser for the Florida Sparse Matrix
Collection to directly benchmark different matrices is also provided.

More information and download:


From: Bruce Bailey
Date: December 11, 2014
Subject: New Book, Stability, Control, and Computation for Time-Delay Systems

Stability, Control, and Computation for Time-Delay Systems: An
Eigenvalue-Based Approach, Second Edition, by Wim Michiels and
Silviu-Iulian Niculescu.

xxiv + 435 pages / Softcover / ISBN 978-1-611973-62-4 / List Price
$114.00 / SIAM Member Price $79.80 / Order Code DC27

In this revised edition, the authors make the leap from stabilization
to the design of robust and optimal controllers and from retarded-type
to neutral-type delay systems, thus enlarging the scope of the book
within control; include new, state-of-the- art material on numerical
methods and algorithms to broaden the book’s focus and to reach
additional research communities, in particular numerical linear
algebra and numerical optimization; and increase the number and range
of applications to better illustrate the effectiveness and generality
of their approach.

To order or for more about this book, including links to its table of
contents, preface, and index, please visit .


From: Bruce Bailey
Date: December 16, 2014
Subject: New Book, Vehicle Routing, Second Edition

Vehicle Routing: Problems, Methods, and Applications, Second Edition,
edited by Paolo Toth and Daniele Vigo.

xviii + 463 pages / Softcover / ISBN 978-1-611973-58-7 / List Price
$119.00 / SIAM Member Price $83.30 / Order Code MO18

The text of the new edition is either completely new or significantly
revised and provides extensive and complete state-of-the-art coverage
of vehicle routing by those who have done most of the innovative
research in the area; it emphasizes methodology related to specific
classes of vehicle routing problems and, since vehicle routing is used
as a benchmark for all new solution techniques, contains a complete
overview of current solutions to combinatorial optimization
problems. It also includes several chapters on important and emerging
applications, such as disaster relief and green vehicle routing.

This book is intended for both researchers and graduate level students
in operations research and applied mathematics. Practitioners will
find this book particularly useful. Readers need a basic knowledge of
the main methods for the solution of combinatorial optimization

To order or for more about this book, including links to its table of
contents, preface, and index, please visit .


From: Pamela Bye
Date: December 09, 2014
Subject: IMA Eight Great Technologies, UK, Jan 2015

The IMA Conference on Research in Mathematics and its Applications:
Eight Great Technologies will be held in Bath on 9 January 2015 to
follow the SIAM UKIE annual meeting in Bath on 8 January

There will be talks on the Eight Great Technologies: Energy; Advanced
Materials; Big Data; Space; Robotics and autonomous systems; Synthetic
Biology; Regenerative Medicine; Agri-science

Registration is now open. To register, please download, complete and
return the application form on the conference webpage (link below).

Please visit the conference webpage:

For further information or to register your interest in this event,
please contact Lizzi Lake, Conference Officer, E-mail:, Tel: +44 (0) 1702 354 020, Fax: +44 (0) 1702
354 111, Institute of Mathematics and its Applications, Catherine
Richards House, 16 Nelson Street, Southend-on-Sea, Essex, SS1 1EF, UK.


From: Carola-Bibiane Schönlieb
Date: December 14, 2014
Subject: LMS Inverse Day, UK, Jan 2015

Our next LMS inverse day will take place at UCL on the 9th of January
2015. Our main topic this time will be "Learning in inverse
problems". Please visit our website for more information on
registration and the schedule for the day

Please, may I also ask you to advertise this event among early career
researchers in particular who are very welcome to attend and present a
poster. PhD students presenting a poster can win an LMS poster award!

Simon Arridge, Marta Betcke, Daniel Lesnic, Carola-Bibiane Schönlieb
and Manuch Soleimani


From: Frank Giraldo
Date: December 16, 2014
Subject: Galerkin methods in weather, UK, Mar 2015

The International Center for Mathematical Sciences (in Edinburgh
Scotland) is pleased to announce the Workshop: Galerkin methods
with applications in weather and climate forecasting to be held
March 23-27 2015. There are limited openings available to this
workshop so please apply early.

The deadline for applying to the workshop is January 18, 2015. The
organizers will decide by January 26, 2015 on the final list of

Information on applying can be found at the following website:

Sincerely, the organizing committee,
Colin Cotter, Andreas Dedner, Frank Giraldo, Mark Taylor


From: Joerg Liesen
Date: December 09, 2014
Subject: Conference Honoring Volker Mehrmann, Germany, May 2015

Abstract submission and registration forms for the conference

Numerical Algebra, Matrix Theory, Differential-Algebraic Equations,
and Control Theory

in honor of Volker Mehrmann on the occasion of his 60th birthday
(Berlin, May 2015)

are now online at

Important deadlines:
Abstract submission: 15 January 2015
Notification of authors: 31 January 2015
Early registration: 28 February 2015
Late registration: 15 April 2015

VM60 Conference: May 6-9, 2015

We hope to see you in Berlin on this special occasion,

Peter Benner, Joerg Liesen, Christian Mehl,
Reinhard Nabben, Lena Scholz, Andreas Steinbrecher,
the VM60 Committee


From: Iain Duff
Date: December 15, 2014
Subject: Sparse Days in St Girons III, France, Jun-Jul 2015

The conference Sparse Days in St Girons III will be held in St Girons
near Toulouse from 29 June to 2 July 2015. Previous conferences were
held in 1994 and 2003 and a similar pattern will be followed for this

There will be sessions on the themes of the CIMI Semester workshops,
viz. low-rank approximations for high performance sparse solvers,
innovative clustering methods for large graphs and block methods,
parallel methods for time dependent problems, and advances in
optimization with application to data assimilation. Further
information on these can be obtained from other pages on the website

You are invited to attend or to give a talk on any area relevant to
the title of the conference on topics not necessarily related to the
workshops. There will also be poster sessions.

The conference general chairs are Jim Demmel (Berkeley), Jack Dongarra
(Tennessee and Manchester), Iain Duff (CERFACS and RAL), and Patrick
Amestoy (INPT-IRIT, Toulouse). The local organizer chair is
Pierre-Henri Cros (IRIT).

More information is available from the website where pre-registration is possible by
clicking on the Registration flag for the Conference.


From: Iain Duff
Date: December 15, 2014
Subject: Innovative Clustering Methods, France, Jul 2015

In the context of the CIMI Semester on "High performance linear and
nonlinear methods for large scale applications", a workshop on
"Innovative clustering methods for large graphsand block methods" will
be held in Toulouse, France, from 6th to 8th July 2015.

The format that we plan for the workshop is for a few short
presentations, on the topics of the day, leaving a lot of time for
exchanges and discussions amongst participants. The central theme of
the workshop is to investigate clustering techniques in the context of
very large and sparse matrices, and the use of HPC to design efficient

Over the three days of this workshop, the foci we plan for each day
are: the first day will be on applications, describing various
disciplines that can benefit from clustering, and what type of
structure identification can be of interest depending on the
application; this can for instance address the use of specific block
structures in large linear system solvers, clustering in graphs with
applications, and pattern recognition using numerical structure; the
second day will focus on tools and kernels useful for clustering
algorithms, such as scaling, graph reordering techniques, and spectral
analysis; the last day will be devoted to tools for model reduction,
including for instance non-negative factorization techniques and rank
reduction techniques.

There are no registration fees for the workshop, but there is a limit
on the number of participants that can be accommodated. Expressions
of interest to attend or proposals (in the form of a one page
abstract) for a short 20mn talk, should be sent by January 31st 2015,
to either Daniel Ruiz or Sandrine Mouysset at IRIT
( or, from whom further
information can be obtained. Notifications of acceptance will be
given by March 1st 2015.

A session of the conference "Sparse days in St Girons III"
(29/06/2015-02/06/2015) will be dedicated to the topics of this
workshop, and people interested in this area might also wish to attend
the conference. Full details of how to register for the conference are
available from the web page


From: Valeria Simoncini
Date: December 12, 2014
Subject: Matrix equations and Tensor Techniques, Italy, Sep 2015

The fifth Workshop on Matrix equations and Tensor Techniques will be
held on September 21-22, 2015 at the Mathematics Department, Alma
Mater Studiorum Universita' di Bologna, Italy.

As in the previous meetings, the focus will be on the latest
developments in the theory, computation and applications of linear and
nonlinear matrix equations and tensor equations. We will extend our
focus to sparsity and low rank structures, and to decay properties of
matrices and tensors associated with these problems.

Additional details and registration information can be found at

Peter Benner (Max-Planck Institut, Magdeburg, Germany)
Heike Faßbender (Technische Universitaet Braunschweig, Germany)
Lars Grasedyck (Aachen University, Germany)
Daniel Kressner (E'cole polytechnique fe'de'rale de Lausanne,

Local Organizer: Valeria Simoncini (Alma Mater Studiorum Universita'
di Bologna, Italy)


From: Carolyn Sellers
Date: December 11, 2014
Subject: MAFELAP 2016, UK, Jun 2016

MAFELAP 2016: 14 – 17 June 2016, Brunel University London, England

We are pleased to announce that MAFELAP 2016, the fifteenth conference
on the Mathematics of Finite Elements and Applications, will take
place at Brunel University London during 14 – 17 June 2016.
Preliminary information is available on the conference website: .

As on previous occasions the conference will consist of plenary
lectures, mini-symposia and parallel sessions. If you are interested
in organizing a mini-symposium at MAFELAP 2016 then please email your
title to as soon as possible.

If you are new to the MAFELAP conferences you can get a flavour of
what they involve from the web page of the previous conference: .


From: Jose A Cuminato
Date: December 10, 2014
Subject: Postdoc Position, ICMC, Brazil


The Institute for Mathematical and Computer Sciences (ICMC - of the University of São Paulo at São
Carlos, São Paulo, Brazil, seeks to fill a Postdoctoral Research
Associate position in Flows through Porous Media starting immediately
with duration of one year with a possibility of extension for two
years upon performance review. Requirements: PhD in Mathematics or
closely related field and experience with code development in
C++. Preference will be given to candidates with experience in the
following topics: (i) Numerical methods for partial differential
equations; (ii) High performance computing; (iii) Multiphase flow
simulations in porous media; (iv) Computational fluid dynamics.
Applicants should provide a letter of intention, a curriculum vitae
and three letters of recommendation to Professor José Alberto Cuminato
( Review of applicants will begin immediately
and will continue until the position is filled.


From: Matt Hopkins
Date: December 09, 2014
Subject: Postdoc Positions, Computational Plasmas, Sandia Labs

Sandia National Laboratories has multiple openings for postdoctoral
positions in the general area of kinetic plasma simulation. Positions
cover the spectrum from algorithm development on heterogeneous
architectures to employing plasma simulation tools as instruments of
scientific inquiry. The methodologies are primarily collisional
kinetic descriptions. We employ a number of coupled approaches
incorporating particle-in-cell (PIC) techniques with collisional
approaches such as Direct Simulation Monte Carlo (DSMC). Our
applications are often complex and three-dimensional, requiring the
use of unstructured meshes on massively parallel platforms. We are
interested in both electrostatic and electromagnetic
descriptions. Physical processes of interest include discharge
phenomena (e.g., vacuum arcs, glow discharge, microscale breakdown),
plasma shock events (e.g., laser-supported detonation or laser-induced
breakdown spectroscopy), and basic plasma science such as sheath
structure and evolution.

Our plasma modeling community has diverse goals and interests ranging
from basic research to applications impacting national security. We
regularly employ multiple postdocs and students and provide an
exciting and engaging environment.

If interested, please contact one or more of:
Matt Hopkins (
Matt Bettencourt (
Chris Moore (


From: Ron Boisvert
Date: December 08, 2014
Subject: Postdoc Positions, NIST

The US National Research Council (NRC) Associateship Program is
accepting applications for two-year appointments for postdoctoral
research at the National Institute of Standards and Technology (NIST)
in Gaithersburg, Maryland and Boulder, Colorado. Among the topic areas
of interest are mathematical modeling, finite elements, dynamical
systems, combinatorial and discrete algorithms, applied optimization
and control, visualization, parallel/distributed computing, and
verification, validation, and uncertainty quantification in scientific
computing. Of particular interest are applications in materials
science, electromagnetics, optoelectronics, physics, network science,
quantum information, and computer security. For details see

Competition for postdoctoral awards across all NIST technical program
areas is managed by the NRC. Applications must be submitted directly
to the NRC; the deadline for applications is February 1. (An
additional competition is held in the summer, with an application
deadline of August 1.) Note that the NRC program at NIST is restricted
to US citizens.


From: Raimund Bürger
Date: December 15, 2014
Subject: Postdoc Positions, Numerical Analysis, Chile

The Research Team project ACT 1118 on Numerical Analysis of Partial
Differential Equations, a three-year project financed by CONICYT
(Chile), is offering two postdoctoral positions at Universidad de
Concepcion or Pontificia Universidad Catolica de Chile. Applications
are sought in all areas related to Numerical Analysis of
PDEs. Applicants should have finished their doctoral work not before
2011. Candidates are requested to submit a CV (including a list of
publications), a research statement describing the intended
postdoctoral work, and a letter of intent, which should include the
desired period of appointment and an explicit statement of who should
supervise the project. Applicants may optionally submit letters of

The positions are for one year and do not involve teaching
duties. Positions are renewable for up to three years by application
to the yearly FONDECYT postdoctoral research competition. Possibility
to apply for national grants in case of a longer stay is also open.
The positions are available from March 1, 2015; however there is some
flexibility in starting appointments. The monthly salary is $1.456.000
before taxes (around US$ 2400). A flight ticket (round trip) will be
covered. Additional funding for attending meetings and conferences
within Chile is available.

Applications should be submitted by e-mail before January 15, 2015 to
Dr. Raimund Bürger, Director, Proyecto Anillo ACT 1118, Centro de
Investigacion en Ingenieria Matematica, Universidad de Concepcion,
Chile. E-mail:

Further information is available here:


From: Alexander Shapeev
Date: December 10, 2014
Subject: Postdoc/PhD Positions, Multiscale Comput Methods, Skoltech, Moscow

Several postdoctoral and PhD positions in the area of Multiscale and
Multiphysics Computational Methods in a group led by Prof. Alexander
Shapeev are available at the Skolkovo Institute of Science and
Technology (Skoltech), Moscow, Russia. The main research focus will be
in multiscale and multiphysics computational methods and numerical
analysis with applications mainly in materials science.

The positions are available immediately, and the starting date is
negotiable. Applications will be accepted until the positions are
filled. For full consideration, the applications must be received by
January 20, 2015. Selected applicants will receive a highly
competitive compensation package. Excellent travel and computing
support will be provided. For further information please visit or contact Alexander Shapeev at

Skoltech is a unique new, private, English-speaking international
university established in October 2011 in collaboration with MIT.


From: Markus Schmuck
Date: December 15, 2014
Subject: PhD Position, Applied Maths, Maxwell Institute, HWU, Edinburgh

The Maxwell Institute for Mathematical Sciences and the Department of
Mathematics at Heriot-Watt University are looking for highly skilled
PhD candidates for a prestigious James Watt scholarship available in
the field of Complex and Strongly Heterogeneous Systems.

Project title: Efficient and reliable, mathematical and computational
framework for transport in complex multiphase materials forming
strongly heterogeneous environments

Some basic steps in the project:
- The mathematically investigation and study of physical models for
general Complex and Highly Heterogeneous Systems such as porous
materials, batteries, fuel cells for instance. A central question is
what is common in different heterogeneous systems and what is
essentially different.
- As heterogeneous systems generally induce high dimensional
multiscale problems, we shall apply rigorous and systematic
upscaling and asymptotic methodologies for the derivation of
effective (lower dimensional) and reliable models.
- The quality of these lower dimensional formulations shall then be
analyzed by deriving error estimates which we shall also confirm
- We shall compare the high dimensional formulation with the new
effective formulation by computations in Matlab/Python for instance.
- Finally, we shall analyze the reliability and efficiency of the new
mathematical and computational framework with specific applications
such as neurons (e.g. synapses), batteries, fuel cells, and porous
materials for instance.

Applications should be sent electronically in ONE PDF file (max. 5 MB)
to Dr. Markus Schmuck,


From: Miguel A. Benítez
Date: December 15, 2014
Subject: PhD Positions, BCAM

The 18 research centres accredited with the Severo Ochoa seal of
excellence have convoked the third edition of the “La Caixa” - Severo
Ochoa International PhD Fellowships Programme. In the framework of
this initiative funded by "la Caixa" Foundation, BCAM – Basque Center
for Applied Mathematics, as a Severo Ochoa Centre has opened an
international call for researchers, offering three-positions for a PhD
Fellowships in the center Research Areas:

Applications must be submitted on-line at:

Deadline for submission: March 30th 2015

The timeline should be the following:
- The call deadline is on March 30th 2015 at 17:00 h.
- The Committee will communicate the candidates selection before the
end of May 2015.
- The candidates should join the center in September/October 2015.

We kindly ask you to distribute this call among colleagues and
potential candidates. Please, do not hesitate to contact us for any
additional information:


From: Bertram Düring
Date: December 14, 2014
Subject: PhD Positions, Mathematics, Univ of Sussex, UK

The Department of Mathematics at the University of Sussex is currently
offering seven fully-funded PhD studentships. These studentships pay a
tax-free bursary of £13863 per year, with fees waived, for 3.5 years
and are available for UK and EU students.

The department also hopes to offer a number of additional studentships
for overseas students ('Chancellor's International Research

The increased investment and growth in scholarships reflects the
department's recent growth in faculty and its continuing success in
attracting funding from research councils, including the award of an
EPSRC Doctoral Training Grant.

For more information, visit



From: Axel Ruhe
Date: December 16, 2014
Subject: Contents, BIT Numerical Mathematics, 54 (4)

Volume 54 · Number 4 · December 2014

Preface to BIT 54:4, A. Ruhe

Error estimation based on locally weighted defect for boundary value
problems in second order ordinary differential equations, W. Auzinger
· O. Koch · A. Saboor Bagherzadeh

Sparsity of Runge–Kutta convolution weights for the three-dimensional
wave equation, L. Banjai · M. Kachanovska

Fourier spectral methods for fractional-in-space reaction-diffusion
equations, A. Bueno-Orovio · D. Kay · K. Burrage

Dual Hermite subdivision schemes of de Rham-type, C. Conti ·
J.-L. Merrien · L. Romani

On the solution of Fredholm integral equations based on spline
quasi-interpolating projectors, C. Dagnino · S. Remogna ·
P. Sablonnière

Stability analysis of the Crank–Nicolson-Leapfrog method with the
Robert–Asselin–Williams time filter, N. Hurl · W. Layton · Y. Li ·
C. Trenchea

Computable error estimates of a finite difference scheme for option
pricing in exponential Lévy models, J. Kiessling · R. Tempone

A stochastic exponential Euler scheme for simulation of stiff
biochemical reaction systems, Y. Komori · K. Burrage

Supercloseness of the mixed fi nite element method for the primary
function on unstructured meshes and its applications,
J. Ku

Cubic spline quasi-interpolants on Powell–Sabin partitions,
A. Lamnii · M. Lamnii · H. Mraoui

A general framework for finding energy dissipative/conservative
H1-Galerkin schemes and their underlying H1 -weak forms for
nonlinear evolution equations,
Y. Miyatake · T. Matsuo

An algorithm for continuous piecewise linear bounding of discrete time
series data, A. Skelton · A.R. Willms

End of Digest