- Today's Editor:
- Daniel M. Dunlavy
- Sandia National Labs
- dmdunla@sandia.gov

- Basin of attraction for Newton's method
- MUSKETEER 1.0 - Tool for Multiscale Network Generation
- Optim Techniques for Inverse Problems, Italy, Sep 2012
- IMA Maths in Finance, Scotland, Apr 2013
- IMA Dense Granular Flows, UK, Jul 2013
- Postdoc Position, Univ of Wyoming
- Postdoc/Doctoral Positions, TU-Munich
- Contents, Journal of Scientific Computing, 52(2-3)
- Contents, Intl Journal of Math and CS, 7(1)
- Contents, Numerical Algorithms, 60(4)
- Subscribe, unsubscribe, change address, or for na-digest archives:
- http://www.netlib.org/na-digest-html/faq.html

-------------------------------------------------------

From: Jens Hugger <hugger@math.ku.dk>

Date: Mon, 23 Jul 2012 15:38:29 +0200

**Subject: Basin of attraction for Newton's method**

I have for many years been teaching basic Numerical Analysis using the

book by Kincaid and Cheney, Numerical Analysis. So I have been

teaching quadratic convergence of Newton's method for nonlinear

equations, when the starting guess is "sufficiently close" to the

solution.

My general question is, What is "sufficiently close"? K&C has a nice

plot showing the "basin of attraction" to the various roots in a

(complex) polynomial z^5+1=0. (In the 2nd edition, the plot is even

in colors on the front page).

Does anybody know / is there litterature about the structure of this

basin of attraction? Is it fractal?

Does anybody know / is there litterature about the general structure

of the domain of convergence of Newton's method for general equations?

-------------------------------------------------------

From: Ilya Safro <safro@mcs.anl.gov>

Date: Thu, 19 Jul 2012 13:16:16 -0500

**Subject: MUSKETEER 1.0 - Tool for Multiscale Network Generation**

We are proud to release a new network generation tool MUSKETEER

(Multiscale Entropic Network Generator). MUSKETEER generates highly

realistic synthetic network data for multiple domains. The tool has

been validated in domains such as epidemiological networks, social

networks, finite-element meshes, power grids as well as small-world

and scale-free networks. MUSKETEER takes empirical network data, which

it coarsens and then refines through the multiscale framework

(V-cycle). During the refinement phase, it introduces user-controlled

perturbations which lead to high-entropy changes of the original

data. The problem of network generation can be formulated at all

levels of the multiscale hierarchy (depending on the user's

preferences to change the entire structure of the network or only

several particular scales). The proposed multiscale framework can

easily incorporate new features such as invariants that have to be

preserved in the generated network. MUSKETEER supports node and edge

labels and attributes, multiple network formats.

* Open source based on Python's NetworkX API

http://www.mcs.anl.gov/~safro/musketeer/

Link to preprint: http://arxiv.org/abs/1207.4266

We would appreciate your feedback on the multiscale strategy for

network generation and the software.

Alexander Gutfraind & Lauren A. Meyers, University of Texas at Austin

Ilya Safro, Argonne National Laboratory

-------------------------------------------------------

From: Marco Prato <marco.prato@unimore.it>

Date: Mon, 16 Jul 2012 15:26:45 +0200

**Subject: Optim Techniques for Inverse Problems, Italy, Sep 2012**

WORKSHOP: OPTIMIZATION TECHNIQUES FOR INVERSE PROBLEMS (OIP2012)

Modena, Italy, September, 20-21, 2012

The format of the workshop is made by a limited number of extended

talks held by international experts in numerical optimization and

inverse problems, followed by shorter presentations. At the end of

each seminar, the program provides time for free discussion about

possible exchanges of information and ideas on topics that include

theoretical and applied aspects of optimization techniques, with

particular attention to related developments in specific inverse

problems as image restoration, compressive sensing, and machine

learning.

Invited Speakers:

Laure Blanc-Féraud, Université Nice Sophia Antipolis

Antonin Chambolle, École Polytechnique, Paris

Christine De Mol, Université Libre de Bruxelles

Roger Fletcher, University of Dundee

James Nagy, Emory University, Atlanta, GA

Alessandro Verri, Universitŕ di Genova

All the information about the workshop can be found at the website

http://www.oip2012.unimore.it/

Contacts:

Marco Prato - Luca Zanni

University of Modena and Reggio Emilia, Italy

Email: marco.prato@unimore.it - luca.zanni@unimore.it

-------------------------------------------------------

From: Pamela Bye <pam.bye@ima.org.uk>

Date: Thu, 19 Jul 2012 06:51:32 -0400

**Subject: IMA Maths in Finance, Scotland, Apr 2013**

IMA CONFERENCE ON MATHEMATICS IN FINANCE

Monday 8 - Tuesday 9 April 2013

Edinburgh Conference Centre, Heriot-Watt University

http://www.ima.org.uk/conferences/conferences_calendar/mathematics_in_finance.cfm

We are inviting academics and practitioners to submit papers to the

Conference describing mathematical models of Systemic risks in

financial markets; Feedback or learning in financial markets; Complex

systems in finance and economics; Leverage and liquidity; Behavioural

finance; Knightian uncertainty or non-ergodic markets; Pre- and

post-trade analysis in computer based trading; Stability in electronic

markets; Risk and solvency in insurance; Econophysics

Papers will be accepted for the conference based on a 150 word abstract for

oral or poster presentation. Abstracts should be submitted by 15 December

2012 either online at http://online.ima.org.uk or by e-mail to

conferences@ima.org.uk

Please state whether your title is intended for oral or poster

presentation. Oral presentations are expected to be 30 minutes in

length, including time for questions and answers.

Abstracts are expected to following the following template:

Title

Contributing author(s) Initials, Surname

Affiliation(s) Department, organisation.

Scientific queries: Dr Tim Johnson, t.c.johnson@hw.ac.uk

Conference queries: Lizzi Lake, conferences@ima.org.uk

-------------------------------------------------------

From: Pamela Bye <pam.bye@ima.org.uk>

Date: Thu, 19 Jul 2012 06:50:04 -0400

**Subject: IMA Dense Granular Flows, UK, Jul 2013**

2ND IMA CONFERENCE ON DENSE GRANULAR FLOWS

Monday 1 – Thursday 4 July 2013

Isaac Newton Institute for Mathematical Sciences, Cambridge, UK

http://www.ima.org.uk/conferences/conferences_calendar/dense_granular_flows.cfm

Flows involving solid particulates are ubiquitous in nature and

industry alike. The objective of this meeting will be to interface the

two ends of the particulate flow spectrum – those working to

understand the fundamentals of granular flows and those attempting to

control particulate flows in an industrial setting - to develop

solutions to the complex problems presented by dense granular flows.

Themes will include dense granular flow, biological systems,

self-propelled particles and geological flows, exploring new

developments in theoretical analysis and experimental techniques. All

attendees will be provided with an opportunity to present recent work

and there will be substantial time for discussion, both during the

workshop and during the evening! Postgraduate and PhD students are

particularly welcomed.

Papers will be accepted for the conference based on a 500 word

abstract for oral or poster presentation. Abstracts should be

submitted by 1st October 2012 either online at

http://online.ima.org.uk or by e-mail to conferences@ima.org.uk.

-------------------------------------------------------

From: Luis Felipe Feres Pereira <felipepereira62@gmail.com>

Date: Sun, 22 Jul 2012 15:33:15 +0000

**Subject: Postdoc Position, Univ of Wyoming**

An opening for a Postdoctoral Associate is available in the Department

of Mathematics/School of Energy Resources, University of Wyoming.

The successful candidate will work in the research group of Professors

F. Furtado, V. Ginting and F. Pereira and the focus of this position

will be research on numerical simulation of multiphase flows in the

subsurface. Problems of interest include carbon geological

sequestration and production of oil and gas from unconventional (low

permeability) reservoirs. A summary of some of ongoing research

projects can be found at:

http://www.uwyo.edu/ser/faculty/pereira/index.html.

This position is intended for an applied mathematician interested in

scientific computing or for a mathematically-minded

engineering/physics person with a solid background in scientific

computing. Preference will be given to candidates with a good working

experience in object oriented C++ programming. This research project

will involve close collaboration with colleagues from the Department

of Chemical and Petroleum Engineering. The start date is immediate and

the duration of the position will be initially one year, with

extensions contingent on satisfactory performance. We offer a

competitive salary and a good package of benefits. Applicants should

provide a vita and at least three letters of recommendation to be sent

to:

Prof. Felipe Pereira

Dept. 3036, 1000 E. University Ave.

Laramie, WY 82071

Email: felipepereira62@gmail.com

The University of Wyoming is committed to Equal Employment Opportunity

and encourages applications from all qualified candidates.

-------------------------------------------------------

From: Massimo Fornasier <massimo.fornasier@ma.tum.de>

Date: Sun, 22 Jul 2012 08:53:58 -0400

**Subject: Postdoc/Doctoral Positions, TU-Munich**

We are opening 2 PostDoc and 1 Doctoral positions for a term of up to

5 years at the Department of Mathematics of the Technical University

of Munich in Germany. These positions are supported by an ERC-Starting

Grant, for the project "High-Dimensional Sparse Optimal Control".

You may find at

http://www-m15.ma.tum.de/foswiki/pub/M15/Allgemeines/JobsEN/Positions-ERC.pdf

the details of the positions and the instructions how to apply.

The deadline for applications is September 30, 2012.

I would kindly ask you to forward this invitation for application to

interested candidates.

I thank you for your kind attention and cooperation.

-------------------------------------------------------

From: Chi-Wang Shu <shu@dam.brown.edu>

Date: Sun, 22 Jul 2012 12:47:32 -0400

**Subject: Contents, Journal of Scientific Computing, 52(2-3)**

Journal of Scientific Computing

http://www.springeronline.com/journal/10915

Volume 52, Number 2, August 2012

Implementation of an X-FEM Solver for the Classical Two-Phase Stefan

Problem, Martin K. Bernauer and Roland Herzog, pp.271-293.

High Order Finite Element Calculations for the Cahn-Hilliard Equation,

Ludovic Goudenege, Daniel Martin and Gregory Vial, pp.294-321.

Error Estimates for an LDG Method Applied to Signorini Type Problems,

Rommel Bustinza and Francisco-Javier Sayas, pp.322-339.

A Variational Data Assimilation Procedure for the Incompressible

Navier-Stokes Equations in Hemodynamics, Marta D’Elia, Mauro Perego

and Alessandro Veneziani, pp.340-359.

Fast Sweeping Methods for Factored Anisotropic Eikonal Equations:

Multiplicative and Additive Factors, Songting Luo and Jianliang Qian,

pp.360-382.

Local Mass Conservation of Stokes Finite Elements, D. Boffi,

N. Cavallini, F. Gardini and L. Gastaldi, pp.383-400.

Entropy Stable Numerical Schemes for Two-Fluid Plasma Equations,

Harish Kumar and Siddhartha Mishra, pp.401-425.

A High Accuracy Post-processing Algorithm for the Eigenvalues of

Elliptic Operators, Jun Hu, Yunqing Huang and Quan Shen, pp.426-445.

Parallel Computation of 3-D Soil-Structure Interaction in Time Domain

with a Coupled FEM/SBFEM Approach, Marco Schauer, Jose E. Roman,

Enrique S. Quintana-Orti and Sabine Langer, pp.446-467.

Performance of the Unstructured-Mesh, SWAN+ADCIRC Model in Computing

Hurricane Waves and Surge, J.C. Dietrich, S. Tanaka, J.J. Westerink,

C.N. Dawson, R.A. Luettich Jr., M. Zijlema, L.H. Holthuijsen, J.M.

Smith, L.G. Westerink and H.J. Westerink, pp.468-497.

Volume 52, Number 3, September 2012

A New Spectral Element Method for Pricing European Options Under the

Black–Scholes and Merton Jump Diffusion Models, Feng Chen, Jie Shen

and Haijun Yu, pp.499-518.

P1-Nonconforming Quadrilateral Finite Volume Methods for the

Semilinear Elliptic Equations, Xinlong Feng, Rongfei Li, Yinnian He

and Demin Liu, pp.519-545.

A Linear Energy Stable Scheme for a Thin Film Model Without Slope

Selection, Wenbin Chen, Sidafa Conde, Cheng Wang, Xiaoming Wang and

Steven M. Wise, pp.546-562.

Mixed Element Method for Two-Dimensional Darcy-Forchheimer Model, Hao

Pan and Hongxing Rui, pp.563-587.

Error Analysis of Chebyshev-Legendre Pseudo-spectral Method for a

Class of Nonclassical Parabolic Equation, Tinggang Zhao, Yujiang Wu

and Heping Ma, pp.588-602.

Spectral Approximation of Partial Differential Equations in Highly

Distorted Domains, Tormod Bjontegaard, Einar M. Ronquist and Oystein

Trasdahl, pp.603-618.

Static Two-Grid Mixed Finite-Element Approximations to the

Navier-Stokes Equations, Javier de Frutos, Bosco Garcia-Archilla and

Julia Novo, pp.619-637.

Fourier Type Error Analysis of the Direct Discontinuous Galerkin

Method and Its Variations for Diffusion Equations, Mengping Zhang and

Jue Yan, pp.638-655.

Numerical Studies Based on Higher-Order Accuracy Lattice Boltzmann

Model for the Complex Ginzburg-Landau Equation, Jianying Zhang and

Guangwu Yan, pp.656-674.

Influence of Reference-to-Physical Frame Mappings on Approximation

Properties of Discontinuous Piecewise Polynomial Spaces, Lorenzo

Botti, pp.675-703.

-------------------------------------------------------

From: Badih Ghusayni <badih@future-in-tech.net>

Date: Tue, 17 Jul 2012 11:24:18 -0400

**Subject: Contents, Intl Journal of Math and CS, 7(1)**

Vol. 7, no. 1, 2012 issue of the International Journal of Math. and CS

(Open- access) is out and contains the following papers

Waad T. Sulaiman, Absolute Summability Factors Involving Quasi-f-Power

Increasing Sequences

Donal F. Connon, Some infinite series involving the Riemann zeta

Function

Badih Ghusayni, Euler-type formulas

Those papers can be downloaded free of charge via

http://ijmcs.future-in-tech.net/Volume7.1.html

-------------------------------------------------------

From: Brezinski Claude <claude.brezinski@univ-lille1.fr>

Date: Thu, 19 Jul 2012 08:32:41 +0200

**Subject: Contents, Numerical Algorithms, 60(4)**

Table of contents for Numerical Algorithms. Volume 60, Number 4

Special Issue: International Conference on Scientific Computing,

S. Margherita di Pula, Sardinia, Italy, October 10-14, 2011, Part II

Inverse problems for regularization matrices, Silvia Noschese, Lothar

Reichel

Nearly optimal meshes in subanalytic sets, Wieslaw Plesniak

The error norm of quadrature formulae, Sotirios E. Notaris

Convergence and stability of a new quadrature rule for evaluating

Hilbert transform, M. R. Capobianco, G. Criscuolo

Uniform approximation on [-1, 1] via discrete de la Vallee Poussin

means, Woula Themistoclakis

Properties and numerical testing of a parallel global optimization

algorithm, Marco Gaviano, Daniela Lera

Dispersion analysis of triangle-based spectral element methods for

elastic wave propagation, Ilario Mazzieri, Francesca Rapetti

On nondecreasing sequences of regularization parameters for

nonstationary iterated Tikhonov, Marco Donatelli

Zeros of Sobolev orthogonal polynomials on the unit circle,

K. Castillo, L. E. Garza, F. Marcellan

On the reduction of Tikhonov minimization problems and the

construction of regularization matrices, L. Dykes, L. Reichel

------------------------------

End of NA Digest

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