NA Digest Tuesday, July 13, 2010 Volume 10 : Issue 28

Today's Editor:
Tamara G. Kolda
Sandia National Labs

Submissions for NA Digest:

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Information via email about NA-NET:

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From: Joseph Traub <>
Date: Tue, 6 Jul 2010 11:40:50 -0400 (EDT)
Subject: 2009 Best Paper Award--Journal of Complexity

Frank Aurzada, Steffen Dereich, Michael Scheutzow, and Christian Vormoor

Win the 2009 Best Paper Award

The Award Committee -- Stephan Dahlke, Universitaet Marburg, Germany and
Dick, University of New South Wales, Australia - determined that the
paper exhibited exceptional merit and therefore awarded the prize to:

Frank Aurzada, Steffen Dereich, Michael Scheutzow, and Christian Vormoor
their paper "High resolution quantization and entropy coding of jump
processes", which appeared in April, 2009. Vol. 25, pp 163-188.

The $3000 prize will be divided between the authors. Each author will also
receive a plaque.


From: Jorge Paloschi <>
Date: Tue, 6 Jul 2010 09:42:09 +0100
Subject: Response to " What is the definition of "condition number"?"

There is an excellent article published by Prof. Werner Rheinboldt in
1976 which extends the concept of condition number to nonlinear
equations. He defines condition numbers for nonlinear functions on a
specific domain. He also shows that when the domain shrinks to a
point, then the condition number of the function coincides with the
Jacobian matrix at that point.

On Measures of Ill-Conditioning for Nonlinear Equations
Werner C. Rheinboldt
Mathematics of Computation, Vol. 30, No. 133 (Jan., 1976), pp. 104-111
(article consists of 8 pages)
Published by: American Mathematical Society
Stable URL:

Jorge Paloschi
MathWorks - Cambridge - UK


From: David Watkins <>
Date: Mon, 12 Jul 2010 02:38:24 -0400
Subject: Pacific Northwest Numerical Analysis Seminar, Washington, Oct 2010

The twenty-third annual Pacific Northwest Numerical Analysis Seminar
will take place on Saturday, October 2nd, 2010 at Washington State
Mark your calendars for a fun weekend on the Palouse.

Speakers: to be determined

A conference website is under construction at

Organizing Committee:
David Watkins (chair)
Alan Genz
Robert Dillon
Sergey Lapin


From: "Alexander Ostermann" <>
Date: Sat, 10 Jul 2010 10:58:21 +0200
Subject: Workshop on Innovative Integrators, Innsbruck (Austria), Oct 2010

Workshop: Innovative Integrators
October 27-30, 2010
Innsbruck, Austria

The Department of Mathematics at the University of Innsbruck organizes
in collaboration with the numerical analysis group at the University
of Trieste the sixth workshop in series on numerical analysis and
scientific computing. This year, the topic will be innovative integrators.

The invited speakers are:

Erwan Faou, INRIA Bruz
Christian Lubich, Univ. Tuebingen

The intention of the workshop is to provide a platform for exchanging
new ideas and results in the development of innovative time integrators.
The workshop covers both, theoretical and practical aspects, and wants
to bring together numerical analysts working in the field as well as
PhD students who intend to start in this area.

For more informations, see

Please note that the number of participants is limited.

Alexander Ostermann (Innsbruck)
Alfredo Bellen (Trieste)


From: Matthew <>
Date: Thu, 08 Jul 2010 15:55:03 -0700
Subject: High Performance Computational Finance, SC10, New Orleans, Nov

WHPCF'10: 3rd Workshop on High Performance Computational Finance at SC10
Special Focus on Implementation Support Infrastructure for Accelerator
9am - 5.30pm, 14th of November, SC10

We seek contributions with a systems-oriented view of the problem. In
addition to submissions that cover aspects of implementation support
infrastructure for financial applications, we also encourage submissions
that deal with aspects of theory and algorithms. From that perspective,
topics of interest to this workshop include, but are not restricted to:

-System software infrastructure for computational finance
-Use of hardware accelerators (FPGA, Cell, GPUs) in computational
-Financial applications of high performance computing: risk algorithms,
algorithmic trading, arbitrage
-Computational algorithms for finance
-High-bandwidth/low-latency streaming of market data
-Cluster computing for computational finance
-Financial data center engineering
-Move from capacity to capability computing in financial applications

Important dates:

-Deadline for submissions: September 3rd, 2010
-Author notification: October 1st, 2010
-Final version due: October 15th, 2010


From: Kei Davis <>
Date: Mon, 12 Jul 2010 18:05:45 -0600 (MDT)
Subject: Parallel/HP Ob.j-Oriented Scientific Computing POOSC, Nevada,
Oct 2010

9th Workshop on
October 18, 2010
Systems, Programming, Languages, and Applications: Software for Humanity
(SPLASH--formerly OOPSLA)
October 17-21, 2010, Renoe-Tahoe Nevada, USA

While object-oriented programming has been embraced in industry,
particularly in the form of C++, Java, and Python, its acceptance by
the parallel scientific programming community has been relatively
slow. Nonetheless, various factors practically dictate the use of
language features that provide higher level abstractions than do C or
older FORTRAN standards. These include increasingly complex physics
models, numerical algorithms, and hardware, e.g. deep memory
hierarchies, ever-increasing numbers of processors, the advent of
multi-core processors; more recently the use of heterogeneous
architectures using the IBM Cell/BE or GP-GPUs, and soon the
experimentation with many-core processors.

This workshop seeks to bring together researchers and practitioners in
this growing and evolving field to `compare notes' on their work. The
emphasis is on how object-oriented programming can benefit scientific
computing specifically: new or novel frameworks, approaches,
techniques, or idioms that use object orientation. Multi-paradigmatic
approaches are also of definite interest. Presentations of work in
progress are welcome.

Complete CfP at


From: "Kirsten Wilden" <>
Date: Tue, 13 Jul 2010 10:51:39 -0400
Subject: SIAM Conf. Applications of Dynamical Systems (DS11) , Utah, May

SIAM Conference on Applications of Dynamical Systems (DS11)
Snowbird Ski and Summer Resort, Snowbird, Utah, USA
May 22-26, 2011

The Call for Presentations for this conference is available at:


October 25, 2010: Minisymposium proposals
November 22, 2010: Abstracts for contributed and minisymposium speakers

November 8, 2010: SIAM Student Travel Award and Post-doc/Early Career
Travel Award Applications

April 25, 2011: Disconnect time is 4:00 PM EDT

April 22, 2011

For additional information, contact the SIAM Conference Department at


From: Oleg Burdakov <>
Date: Sat, 10 Jul 2010 09:00:11 -0400
Subject: OMS special issue dedicated to the 60th birthday of Florian Potra

Call for Contributions to
Special Issue of Optimization Methods and Software (OMS)
in honor of Florian A. Potra's 60th birthday

We invite articles on all aspects within the scope of OMS as
summarized on the Taylor & Francis website

However, submissions in the area of interior-point methods for
various optimization problems, and applications of optimization
methods in multibody dynamics and other fields are especially
welcome. Throughout his career Florian Potra has had numerous and
significant contributions in these areas of research.

All manuscripts should conform to the OMS style regulations.
Submissions are due by November 15, 2010 via the manuscript central portal

Mihai Anitescu, Goran Lesaja


From: "Jan G. Korvink" <>
Date: Fri, 9 Jul 2010 04:19:38 -0400
Subject: Interim professor in microsystems simulation, IMTEK, Uni Freiburg

The Faculty of Engineering is seeking applications from suitably
qualified candidates for the post of a non-tenured professor ad
interim ("Lehrstuhlvertreter", at the W3 level) in the area of
Microsystem Simulation, for the duration of 3 years starting in
October 2010.

The successful candidate will be expected to hold lectures in English
and in German for Microsystems Engineering students at the B.Sc. and
M.Sc. levels on the following subjects: Technical Mechanics
(electrodynamics of MEMS), Simulation (finite element theory), Model
order reduction (compact modelling), and Topology
optimization. Experience in teaching Engineering Design will be of
advantage, as will experience in supervising Bachelor and Master
theses. Applicants should hold a PhD in Engineering or Physics, and
should either hold a habilitation degree or demonstrate equivalent

The University of Freiburg aims to increase the number of women
employees and hence explicitly encourages qualified women to apply for
the position. Persons with disabilities, yet otherwise with equivalent
qualifications, will be given preference.

Applications, including a cover letter, CV, publications list, and
proof of teaching activities should be sent as a single PDF file, by
15 September 2010, to Beyond this date,
applications will be accepted until the post is filled.


From: "Augusto Micheletti" <>
Date: Tue, 13 Jul 2010 17:41:16 +0200
Subject: PostDocs, Visiting Positions, Research in Pairs at CIRM (Trento) 2010-2011


In the course of the year 2007 the Istituto Trentino di Cultura was
transformed into a Foundation, the 'Fondazione Bruno Kessler'. The
CIRM (Centro Internazionale per la Ricerca Matematica), through its
new Comitato Direttivo, formed by:

Fabrizio Catanese (Bayreuth University), Director,
Luigi Ambrosio (Scuola Normale Superiore di Pisa),
Marco Andreatta (Trento University),
Fritz Grunewald (Duesseldorf University),
Alberto Valli (Trento University),
Don Zagier (Max Planck Institut, Bonn and College de France, Paris),

took this transformation as an occasion to expand the spectrum of the CIRM
activities, held since many years in collaboration with the University of

Next to the traditional activity, which has seen the CIRM organize more
than 210 mathematical Meetings and Conferences in the period 1979-2007, and
the related editorial activity, which has seen the publication of more than
50 research books and journal volumes, the Comitato Direttivo set up a new
range of activities, especially four types of visiting positions with the
intention of stimulating the interaction between the mathematical research
community of the Trento area and the European and international mathematical

The hope is that this new and important initiative may in the future
the Trento CIRM to be in line with other European Mathematical Research

One of the targeted purposes is to have foreign visitors spending part of
their sabbatical at the CIRM, bringing new experiences and exciting new
developments in contact with the mathematical environment of the Trento
area. These visitors will receive a more than full reimbursement (see below)
of the expenses connected with their stay in Trento.

It is moreover agreed upon that the support of younger researchers is one
of the vital functions of a research centre. In this direction, the CIRM
opens the application for two Postdoc Positions.

I) Postdoc Fellowships

The CIRM offers two annual Postdoc Fellowships for researches in the
of Mathematics in the year 2010-2011. Each fellowship amounts to Euro 23500
gross per year (taxes should be deducted), which will be pro-rated in 12
monthly installments, and requires the presence in the CIRM Institute
(address Via Sommarive 14, Povo, Trento).

The applications must arrive not later than September 10th, 2010 at the
address Fondazione Bruno Kessler, Centro Internazionale per la Ricerca
Matematica, Via Sommarive n. 14 - Povo, 38123 Trento by ordinary mail or via
electronic mail to the address

The Comitato Direttivo of CIRM will make a selection of winner
ranking them in consecutive order. On the basis of this list of selected
candidates, the CIRM will make offers to award the fellowships (as
"contratto di collaborazione coordinata e continuativa a progetto").

These fellowships are incompatible with other full-time employment or
with similar fellowships.

Winners must communicate their acceptance of the fellowship within 15
from the time of receipt of the communication of CIRM. If one of the chosen
candidates turns down the offer, the CIRM will proceed to make an offer to
the next candidate on the list.

The activities connected with the new enrollment, except for particular
requirements to be agreed upon with the winners, will start preferably on
November 2nd, but possibly also before or after, in any case before November
30th, 2010.

Applications for Postdoctoral Fellowships may also be submitted
before the
official awarding of the Ph.D. title (or equivalent), but under a solid
guarantee that the title will be awarded before the last deadline (November
30th, 2010). In any case the title should have been awarded before the
beginning of the activity at the CIRM.

Applicants must send by ordinary mail, or possibly by electronic mail to
the address , the following documents:

1. A curriculum vitae including surname, first name and postal address
(e-mail address too) chosen to correspond with CIRM, together with three
recommendation letters.

2. A detailed Research Program with explicit reference to either a
Professor of Trento University, or a

member of the Comitato Direttivo of CIRM. The applicant's program must be
related to the Research Group of the Host Professor.

3. A list of publications.

4. Copies (possibly, electronic files) of recent articles and preprints.

5. A copy (possibly, electronic file) of the Doctoral Thesis; in case of
submission of a preliminary version

a statement by the Ph.D. advisor should be attached.

The Comitato Direttivo of CIRM will make a selection of winner
ranking them in consecutive order, and with a preference for Research
Programs connected to the research activity at CIRM and at the Università di
Trento. It is expected that the results of the selection process will be
communicated to the applicants within October 5th, 2010.

If one of the chosen candidates has not yet been awarded the Ph.D. title
within the date agreed upon for commencing the activity at the CIRM, the
Comitato Direttivo will proceed to make an offer to the next candidate on
the list.

The fellows will have access, free of charge, at the FBK Cafeteria in

CIRM will provide the necessary logistic support: office space and
computer facilities, access to the library and to other facilities of the
Department of Mathematics of the Università di Trento and of the Fondazione
Bruno Kessler.

II) CIRM Visiting Professors and CIRM Visiting Scholars

CIRM Visiting Scholars will perform mathematical research in cooperation
with scientists and researchers of Trento University or, more generally, of
the Trento area, holding some research seminars; CIRM Visiting Professors
will hold short Ph.D. courses, or 'Summer Courses', or series of seminars.

It is foreseen that the selection process for Visiting
take place through either

i) individual application, or

ii) invitation by a professor of Trento University or by a member of the
Comitato Direttivo.

In both cases, as a rule, the applications-proposals must be motivated on
the basis of cooperation or synergy with Mathematicians belonging to
Institutions which are related with Trento. Applications must be sent to the
address FBK, Centro Internazionale per la Ricerca Matematica, Via Sommarive
n. 14-Povo, 38123 Trento, Italy by ordinary mail or via electronic mail to
the address Applications must also contain a specific
indication of the proposed dates for the visit (usually:

between 15 days and three months); it is possible to enclose recommendation

Applications and proposals may be sent at any time. However, it is
recommended to submit them sufficiently ahead of time, since they will be
usually examined three times every year.

Three levels of remuneration are foreseen, according to the corresponding
career level and the period of staying at CIRM.

All levels include a full coverage of expenses, preferably by direct
payment by the FBK-CIRM administration, travel reimbousement, and a
honorarium (subject to taxation), up to a maximum of:

Level I) Euro 3000, all inclusive, per month.

Level II) Euro 3500, all inclusive, per month.

Level III) Euro 4000, all inclusive, per month.

CIRM will provide the necessary logistic support: office space and
computer facilities, access to the library and to other facilities of the
Dipartimento di Matematica della Università di Trento, and of the Fondazione
Bruno Kessler (such as FBK Cafeteria).

III) Research in Pairs

This type of program is similar to the one of the Mathematisches
Forschungsinstitut Oberwolfach, and provides for the presence of two or
three partners from Universities located in different towns, who intend to
work on a definite research project and for a well specified period of time
(ranging from one to six weeks).

Applicant partners must submit a scientific project in the field of
mathematics, with a detailed research program, resulting in one or more
scientific publications in journals of excellent mathematical level; the
support of the CIRM will then be acknowledged in the resulting publications.

Participants in the RIP Program will also give occasional research
talks at the CIRM or at the University of Trento, but will enjoy freedom in
the pursuit of their scientific goals.

Applications where one or more of the partners are Italians will of
be welcome.

CIRM will provide the necessary logistic support: office space and computer
facilities, access to the library and to other facilities of the
Dipartimento di Matematica della Università di Trento, and of the Fondazione
Bruno Kessler (such as FBK Cafeteria).

Participants in the RIP Program will have their living expenses (full
board and lodging) fully paid by CIRM and will possibly get an insurance
covering their activity inside the CIRM offices. As a rule, travel expenses
will not be reimbursed, except in exceptional cases.

Applications must be sent to the address FBK, Centro Internazionale
per la
Ricerca Matematica, Via Sommarive n. 14-Povo, 38123 Trento, by ordinary mail
or possibly via electronic mail to the address

Applications can be submitted at any time, but preferably a few months
before the planned stay, since decision making might require up to three
months or more.

Applicants are asked to submit, together with their application, a brief
description of their research proposal, their C.V.'s, a list of
publications, and possibly electronic copies of some recent articles. They
must specify in detail the dates of their intended visit.

The Director of CIRM
Prof. Fabrizio Catanese

The Visitors program (RIP included) will be run by the Comitato Direttivo
of CIRM in a similar way to the one of the Editorial Committee of a
scientific journal.

Proposals can be sent either by ordinary mail or by electronic mail, and
will be discussed by the Comitato Direttivo per e-mail, possibly asking
for experts' opinions on the submitted proposals.


From: "Alexander Ostermann" <>
Date: Sat, 10 Jul 2010 11:37:12 +0200
Subject: PostDoc position at Univ Innsbruck (Austria)

Applications are invited for a post doctoral position in numerical
analysis at the University of Innsbruck. The successful applicant will
work in the group of Professor Alexander Ostermann.

Applicants should have or be about to complete a PhD or equivalent
qualification in mathematics. They should have experience in numerical
analysis and/or scientific computing, preferably in the fields of
differential equations or numerical linear algebra. More information of
relevant research topics can be found at

The post is available for four years from 1 October 2010.
The gross salery will be approximately Euro 45,000 p.a.

Informal enquiries should be directed to Professor Alexander Ostermann
( )


From: Emmanuel Lorin <>
Date: Tue, 6 Jul 2010 09:50:25 -0400
Subject: Post-Doc. in Computational Fluid Dynamics

Post-Doc in Computational Fluid Dynamics

Carleton University (Ottawa), Ecole Polytechnique de Montreal (Montreal),
General Fusion (Vancouver)

Title: Hydrodynamics simulations for Magnetized Target Fusion based nuclear

It is largely recognized by the scientific and political community that
controlled nuclear fusion is the best long-term means of meeting mankind's
growing need for a clean, renewable and inexpensive energy source. The two
main kinds of nuclear fusion devices are based on Magnetic Confinement
(MCF), like the Tokamak design, and Inertial Confinement Fusion (ICF), like
the NIF design using intense lasers. An improved understanding of plasma
physics over the last 20 years and the huge technical difficulties in
designing MCF and ICF reactors, has re-awoken the interest in several
alternative reactor designs, in particular in those that capitalize on the
increased stability of Field Reversed Configurations (FRC) with increased
currents. In this vein, General Fusion, a company from Vancouver, has
since 2002 on a project of implementing a device based on Magnetic Target
Fusion (MTF) first proposed in the 80s by researchers at the US Naval
Research Lab. This approach is an intermediate approach between MCF (low
plasma density, very strong magnetic fields, large confinement times)
and ICF
(high plasma density, very intense lasers, short confinement times).

The Post-Doc general objectives will be to numerically validate the chosen
physical models of some essential physics within General Fusion's device
thereby i) providing numerical proof-of-concept ii) reducing operating
uncertainties and iii) optimizing reactor design. Specialized numerical
often classified, exist for the simulation of specific reactor designs
(MCF or
ICF) but not for MTF. The Post-Doc will then adapt existing High-Performance
codes for Hydrodynamics, namely Frontier
[ ], in order to address
questions about plasma instabilities during compression, Lawson's criterion,
vortex collapses. Details on General Fusion's reactor can be found on

Keywords: Hydrodynamics, Bifluid Flows, FronTier, Front-Tracking,
Rayleigh-Taylor Instabilities, High Performance Computing.

Requirements: A PhD in one of the following areas is required: Applied
Mathematics, Physics, Mechanical or Electrical Engineering. Applicants
have a strong background in Scientific Computing ideally applied to Fluid

Supervision: This position will be funded by MITACS and General Fusion and
will part of a MITACS Cluster project. It will be co-supervised by Marc
Laforest (Ecole Polytechnique de Montreal), Emmanuel Lorin (Carleton
University), and Frederic Sirois (Ecole Polytechnique de Montreal). The
student could be registered at Carleton University or Ecole Polytechnique de
Montreal. Frequent visits in Vancouver are expected.

Starting date: July 2010

Salary: $36,000 per year.

Contact: Marc Laforest (, Emmanuel Lorin
(, Frederic Sirois (


From: Pierre Fortin <>
Date: Sun, 11 Jul 2010 14:21:35 -0400
Subject: PhD position at University Pierre and Marie Curie, Paris, France

The LIP6 laboratory (University Pierre and Marie Curie, Paris, France)
has one PhD position in parallel HPC and computer arithmetic dealing
with the Table Maker's Dilemma.

More details are available at:


From: Claude Brezinski <>
Date: Tue, 13 Jul 2010 11:58:54 +0200
Subject: Contents, Numer. Algorithms, 54-4

Table of contents for Numerical Algorithms, Volume 54, Number 4.

A uniform numerical method for semilinear reaction-diffusion problems
with a boundary turning point.
Relja Vulanovic, Ljiljana Teofanov
Pages 431 - 444

A new family of modified Ostrowski’s methods with accelerated eighth
order convergence.
Janak Raj Sharma, Rajni Sharma
Pages 445 - 458

Integral representation of a solution of the Neumann problem for
the Stokes system.
Dagmar Medkova
Pages 459 - 484

On a class of secant-like methods for solving nonlinear equations.
Ioannis K. Argyros
Pages 485 - 501

Accelerated gradient descent methods with line search.
Pedrag S. Stanimirovic, Marko B. Miladinovic
Pages 503 - 520

Homotopy analysis method for multiple solutions of the fractional
Sturm-Liouville problems.
Saeid Abbasbandy, A. Shirzadi
Pages 521 - 532

Quasi-Lp norm orthogonal Galerkin expansions in sums of Jacobi
Philip W. Livermore, Glenn R. Ierley
Pages 533 - 569


From: Ed Saff <>
Date: Fri, 9 Jul 2010 14:44:42 -0500
Subject: Contents, Constructive Approximation Volume 32 Number 1 2010

Constructive Approximation
Vol. 32 No. 1 2010
Table of Contents

Volume 32 Number 1 of Constructive Approximation is now available on
the SpringerLink web site at

"Finite Gap Jacobi Matrices, I. The Isospectral Torus"
by Jacob S. Christiansen, Barry Simon, and Maxim Zinchenko
Pages 1-65

"Pairs of Lattice Paths and Positive Trigonometric Sums"
by Victor J. W. Guo and Jiang Zeng
Pages 67-75

"Sharp Estimates of the Constants of Equivalence Between Integral Moduli of
Smoothness and K-functionals in the Multivariate Case"
by Lubomir T. Dechevsky and Ilya V. Kachkovskiy
Pages 77-90

"On Approximation of Continuous Functions by Entire Functions on Subsets of
the Real Line"
by V. V. Andrievskii
Pages 91-130

"Pointwise Comparison of PCM and ÓÄ Quantization"
by John J. Benedetto and Onur Oktay
Pages 131-158

"On the Convergence of Optimal Measures"
by T. Bloom, L. Bos, N. Levenberg, and S. Waldron
Pages 159-179

Constructive Approximation
An International Journal for Approximations and Expansions
Published by Springer


From: Emma Avery <>
Date: Fri, 9 Jul 2010 11:48:48 +0100
Subject: Contents, Inverse Problems, volume 26, issue 8, August 2010

Volume 26, Issue 8, August 2010
Article numbers: 085001--085018

Individual articles are free for 30 days following their publication on the
web. This issue is available at:

A sampling method for inverse scattering in the time domain
Q Chen, H Haddar, A Lechleiter and P Monk

Inverse problem of linear combinations of Gaussian convolution kernels
(deconvolution) and some applications to proton/photon dosimetry and image
W Ulmer

A two-component $\mu$-Hunter--Saxton equation
Dafeng Zuo

Integration of the Toda lattice with an integral-type source
Alberto Cabada and Gayrat Urazboev

Expected absolute value estimators for a spatially adapted regularization
parameter choice rule in $L^{1}$-TV-based image restoration
Michael Hinterm\"uller and M Monserrat Rincon-Camacho

Solving linear operator equations in Banach spaces non-iteratively by the
method of approximate inverse
Thomas Schuster and Frank Sch\"opfer

Calculating tissue shear modulus and pressure by 2D log-elastographic
Joyce R McLaughlin, Ning Zhang and Armando Manduca

Inverse nodal problems for differential pencils on a star-shaped graph
Chuan-Fu Yang and Xiao-Ping Yang

Identification for a semilinear evolution equation in a Banach space
Alfredo Lorenzi and Ioan I Vrabie

Inverse diffusion theory of photoacoustics
Guillaume Bal and Gunther Uhlmann

An application of the reciprocity gap functional to inverse mixed impedance
problems in elasticity
Christodoulos E Athanasiadis, David Natroshvili, Vassilios Sevroglou and
Ioannis G Stratis

An inverse problem for a wave equation with sources and observations on
disjoint sets
Matti Lassas and Lauri Oksanen

Performance analysis of maximum likelihood methods for regularization
problems with nonnegativity constraints
P Favati, G Lotti, O Menchi and F Romani

A hybrid one-step inversion method for shear modulus imaging using
time-harmonic vibrations
Tae Hwi Lee, Chi Young Ahn, Oh In Kwon and Jin Keun Seo

Algorithm for the determination of a linear crack in an elastic body from
boundary measurements
Elena Beretta, Elisa Francini, Eunjoo Kim and June-Yub Lee

Stability estimate for an inverse problem for the electro-magnetic wave
equation and spectral boundary value problem
Hajer Ben Joud

Amplitude calculations for 3D Gaussian beam migration using complex-valued
Norman Bleistein and Samuel H Gray

Numerical approximation of null controls for the heat equation:
Ill-posedness and remedies
Arnaud M\"unch and Enrique Zuazua

End of NA Digest