IPNet Digest Volume 9, Number 07 July 31, 2002 Today's Editor: Patricia K. Lamm Michigan State University Today's Topics: Workshop in Lisbon: Inverse Obstacle Problems SIAM Conference: Math/Computational Issues in the Geosciences Postdoctoral position: Montana State and Gemini Observatory Special Issue: Linear Algebra and Its Applications Table of Contents: Inverse Problems Submissions for IPNet Digest: Mail to ipnet-digest@math.msu.edu Information about IPNet: http://www.mth.msu.edu/ipnet Mail to ipnet-request@math.msu.edu ----------------------------- From: Carlos Alves Subject: Workshop in Lisbon on Inverse Obstacle Problems Date: Sat, 20 Jul 2002 Workshop on Inverse Obstacle Problems Lisbon, Instituto Superior Tecnico, November 4-6, 2002 http://www.math.ist.utl.pt/wiop/ Inverse Obstacle Problems is an important area of applied mathematical research with applications in several areas of engineering and sciences, namely non destructive testing, detection of cracks or material inhomogeneities, medical imaging, etc. The aim of this workshop is to discuss new developments, mathematical results and numerical challenges on Inverse Obstacle Problems. The workshop is dedicated to Professor Rainer Kress, on the occasion of his 60th birthday. There is no registration fee to attend the workshop. Further information: Web page: http://www.math.ist.utl.pt/wiop/ Email: wiop@math.ist.utl.pt The Organizing Committee Carlos Alves (IST), Andreas Kirsch (U. Karlsruhe) ----------------------------- From: Kirsten Wilden Subject: SIAM Conf. on Math./Computational Issues in the Geosciences Date: Tue, 23 Jul 2002 Conference Name: SIAM Conference on Mathematical and Computational Issues in the Geosciences (SIAG/GS) (GS03) Location: Radisson Hotel and Suites Austin, Austin, Texas Dates: March 17-20, 2003 The Call for Presentations for this conference is available at: http://www.siam.org/meetings/gs03/ Deadlines: Deadline for submission of minisymposium proposals: August 20, 2002 Deadline for minisymposium speaker abstracts: September 17, 2002 Deadline for submission of contributed abstracts: September 17, 2002 For additional information, contact SIAM Conference Department at siam@meetings.org ----------------------------- From: Curt Vogel Subject: postdoctoral position at Montana State and Gemini Observatory Date: Fri, 26 Jul 2002 Postdoctoral position in Applied and Computational Mathematics at Montana State University and the Gemini Observatory, Hilo, Hawaii. Analysis, Modeling, and Simulation of Adaptive Optics Systems for Extremely Large Telescopes The goal is to develop algorithms for the simulation and control of large-scale adaptive optics systems for astronomical telescopes. The focus will be on multiconjugate adaptive optics. Work will be carried out at the Department of Mathematical Sciences at Montana State University and the Gemini Observatory in Hilo, Hawaii. Directors of this collaborative project are Dr. Brent Ellerbroek (Gemini) and Professor Curt Vogel (Montana State). Ideal qualifications include expertise in one or more of the following fields: Fourier Optics, Computational and Applied Mathematics, Inverse Problems, Control Theory, and Astronomical Imaging. In addition, the applicant should be proficient with MATLAB. $40,000 + benefits + travel for 1 year (funded by the Center for Adaptive Optics); renewable for up to 2 more years (funded by the US Air Force Office of Scientific Research). Review of applications will begin immediately and will continue until the position is filled. For more information, check the web page http://www.math.montana.edu/~vogel/Hiring/new_position.html or e-mail Curt Vogel (vogel@math.montana.edu). ----------------------------- From: Hans Schneider Subject: LAA special issue announcements Date: Wed, 24 Jul 2002 LINEAR ALGEBRA AND ITS APPLICATIONS Special issue on Matrices and Mathematical Biology Call for papers In the last decade the field of mathematical biology has expanded very rapidly. Biological research furnishes both data on and insight into the workings of biological systems. However, qualitative and quantitative modelling and simulation are still far from allowing current knowledge to be organized into a well-understood structure. Further, the diversity present in mathematical biology, coupled with the absence of a single unifying approach, has inspired the formation of entirely new scientific disciplines such as bioinformatics. Theoretical research activity in mathematical biology is naturally of an interdisciplinary character. It involves mathematical and statistical investigations, sometimes in combination with techniques originating from the computational sciences. In many of these approaches, linear algebra is key to solving the mathematical problems which arise. For instance, in some population models, the asymptotic rate of increase of the population turns out to be the spectral radius of a certain matrix associated with the population, while the other eigenvalues also yield information on the evolution of the population's structure. Conversely, problems in mathematical biology can enrich linear algebra. For example, in attempting to measure the influence of a single matrix entry on a simple eigenvalue, linear algebraists frequently employ the derivative of that eigenvalue with respect to the entry. However, some biologists have proposed the use of the elasticity, or a logarithmic derivative, of an eigenvalue with respect to a matrix entry in order to measure the effect on that eigenvalue of perturbing a matrix entry. Thus linear algebraists are challenged to deepen and develop the understanding of the ways in which the effects of changes in the ecological conditions on the populations can be measured through further theoretical investigations. A recent book by Caswell on matrix population models makes extensive use of linear algebraic techniques. Quoting from the introduction to that book: "Matrix population models -- carefully constructed, correctly analyzed, and properly interpreted - provide a theoretical basis for population models... A goal of this book is to raise the bar of what constitutes rigorous analysis in population models.... The work of the population biologist is too important to settle for less." But Caswell's call for careful mathematical construction and analysis applies to areas beyond the subject of population models; clearly a rigorous approach would benefit all areas of interaction between biology and mathematics. The Special Issue of LAA dedicated to Matrices and Mathematical Biology is intended to both foster and accelerate cross fertilization between those working primarily in linear algebra and those working primarily in mathematical biology. The editors hope that such an issue of LAA will be of benefit to both fields. This special issue will be open for all submissions containing new and meaningful results that advance interaction between linear algebra and mathematical biology. The editors welcome submissions in which linear algebraic methods play an important role for novel approaches to problems arising in mathematical biology, or in which investigations in mathematical biology motivate new tools and problems in linear algebra. Survey papers which discuss specific areas involving the interaction between biology and linear algebra, particularly where such interaction has been successful, are also very welcome. Areas and topics of interest for the special issue include, but are not limited to: metabolistic pathways statistical data analysis linear algebra problems in graph partitioning matrix population models model discrimination in biokinetics linear algebra problems in network analysis and synchronization subspace oriented eigenvalue problems aggregation/disaggregation or related techniques hidden Markov models epidemic models modelling phylogenetic trees All papers submitted must meet the publication standards of Linear Algebra and its Applications and will be refereed in the usual way. They should be submitted to one of the special editors of this issue listed below by 31 May 2003. Michael Dellnitz Department of Mathematics and Computer Science University of Paderborn D-33095 Paderborn Germany dellnitz@upb.de Steve Kirkland Department of Mathematics and Statistics University of Regina Regina, Saskatchewan Canada S4S 0A2 kirkland@math.uregina.ca Michael Neumann Department of Mathematics University of Connecticut Storrs, Connecticut O6269-3OO9 USA neumann@math.uconn.edu Christof Schuette Department of Mathematics & Computer Science Numerical Mathematics/Scientific Computing Free University Berlin Arnimallee 2-6 D-14195 Berlin Germany schuette@math.fu-berlin.de See http://www.math.wisc.edu/~hans/speciss.html for the calls for papers of the following LAA special issues all of which invite submissions at the present time: - Special issue devoted to the ILAS conference at Auburn in June 2002. - Special issue on the occasion of Peter Lancaster's 75th birthday. - Special issue on Large Scale Linear and Nonlinear Eigenvalue Problems. - Special issue on Linear Algebra in Signal and Image Processing - Special Issue on Order Reduction of Large-Scale Systems. - Tenth Special Issue on Linear Algebra and Statistics - Special Issue on Matrices and Mathematical Biology Submitted by: Hans Schneider hans@math.wisc.edu. Department of Mathematics 608-262-1402 (Work) Van Vleck Hall 608-271-7252 (Home) 480 Lincoln Drive 608-263-8891 (Work FAX) University of Wisconsin-Madison No Home FAX at present Madison WI 53706 USA http://www.math.wisc.edu/~hans (URL) ----------------------------- From: "Elizabeth Martin" Subject: Contents list for Inverse Problems, Volume 18, Issue 4 Date: Wed, 17 Jul 2002 Inverse Problems August 2002 Volume 18, Issue 4 Table of Contents All articles are free for 30 days after publication on the web. This issue is available at: http://stacks.iop.org/0266-5611/18/i=4 TOPICAL REVIEW Inverse problems as statistics S N Evans and P B Stark PAPERS Iterative regularization of parameter identification problems by sequential quadratic programming methods M Burger and W M\"uhlhuber Isospectral strings H P W Gottlieb Optimal finite difference grids for direct and inverse Sturm--Liouville problems L Borcea and V Druskin Discretization of the Schr\"odinger spectral problem A B Shabat An inverse boundary problem for the steady-diffusion equation with moving boundaries with applications to the pearlite--austenite transformation in steel N D Aparicio and C Atkinson The MUSIC-algorithm and the factorization method in inverse scattering theory for inhomogeneous media A Kirsch The Aharonov--Bohm effect and time-dependent inverse scattering theory R Weder Line segment crack recovery from incomplete boundary data A Ben Abda, M Kallel, J Leblond and J-P Marmorat Identification of nonlinearity in a conductivity equation via the Dirichlet-to-Neumann map H Kang and G Nakamura Equipotential line method for magnetic resonance electrical impedance tomography O Kwon, J-Y Lee and J-R Yoon Exactly solvable eigenvalue problems for a nonlocal nonlinear Schr\"odinger equation Y Matsuno Reconstruction of a current distribution from its magnetic field R Kress, L K\"uhn and R Potthast On theory and application of the Helmholtz equation least squares method in inverse acoustics V Isakov and S F Wu Efficient determination of multiple regularization parameters in a generalized L-curve framework M Belge, M E Kilmer and E L Miller Regularization of a Fourier series method for the Laplace transform inversion with real data L D'Amore and A Murli Submitted by: Elizabeth Martin, Senior Production Editor, Inverse Problems Institute of Physics Publishing Dirac House, Temple Back, Bristol BS1 6BE UK Tel: +44 (0)117 929 7481 (Direct: +44 (0)117 930 1078) Fax: +44 (0)117 929 4318 (Direct: +44 (0)117 920 0764) E-mail: liz.martin@iop.org WWW: http://www.iop.org ------- end -------