Subject: IPNet Digest: Volume 15, Number 05 From: "IPNet (Inverse Problems Network)" Date: Wed, 14 Oct 2009 10:25:08 -0400 To: Inverse Problems Network IPNet Digest Volume 16, Number 05 October 14, 2009 Today's Editor: Patricia K. Lamm, Michigan State University Today's Topics: Summer School: Computational Solution of Inverse Problems Workshop: Nonlinear Physics -- Theory and Experiment New Book: Nonlinear Least Squares for Inverse Problems PhD Studentships in Inverse Problems: Tomography (RTT, EIT) Postdoc: Reconstruction Methods for 3D Tomography (EIT) Postdoc: Surface Waves, Early Tsunami Detection Table of Contents: Inverse Problems Table of Contents: Journal of Inverse and Ill-posed Problems Table of Contents: Nonlinear Analysis: Modelling and Control Submissions for IPNet Digest: Mail to ipnet-digest@math.msu.edu Information about IPNet: http://www.math.msu.edu/ipnet ----------------------------- Subject: Summer school on computational solution of inverse problemsFrom: Samuli Siltanen Date: Thu, 24 Sep 2009 Summer school for graduate students and postdocs: "Computational solution of inverse problems" (FICS 2010) University of Helsinki, Finland June 28 - July 2, 2010 There will be four minicourses: Nuutti Hyvönen (Helsinki University of Technology, Finland): Factorization and source support methods for electrical impedance tomography Jari Kaipio (University of Auckland, New Zealand): Bayesian framework for inverse problems Barbara Kaltenbacher (University of Graz, Austria): Iterative solution methods for inverse problems Kim Knudsen (Technical University of Denmark): D-bar methods for nonlinear inverse problems. In addition, participants can give contributed talks. More information is available at the school website https://wiki.helsinki.fi/display/mathstatKurssit/FICS+2010 ----------------------------- Subject: Workshop "Nonlinear Physics.Theory and Experiment. VI." From: Maria Concetta Gerardi Date: Mon, 5 Oct 2009 NONLINEAR PHYSICS. THEORY AND EXPERIMENT. VI Gallipoli, June 23-July 3, 2010 FIRST ANNOUNCEMENT The theory of solitons which began as an investigation of a very interesting but particular class of nonlinear phenomena in physics now involves a broad variety of mathematical methods that allow one to study a wide range of phenomena and problems that arise in physics, technology, biology and pure and applied mathematics. The purpose of the Workshop is to bring together qualified scientists and young researchers who study nonlinear physics, mathematics or science. A goal of the meeting is to offer researchers the opportunity to discuss recent developments and achievements, as well as to discuss future perspectives, in the fascinating natural environment of Southern Italy. As stated in the title of the Workshop, emphasis will be placed on both theory and experiment. An objective is to offer to the nonlinear scientific community a truly interdisciplinary workshop as a privileged place for scientific interaction among theoreticians and experimentalists. The organizers of the Workshop have observed the increasing relevance of solitons and other nonlinear effects in laboratory experiments and applications. Applications to nonlinear optics, molecular dynamics, fluid dynamics, plasma waves, hydrodynamics, quantum electronics, solid state physics, string theory, gravity etc. are of interest. Mathematical approaches including continuous and discrete nonlinear systems, classical and quantum, will be considered. Specific theoretical topics can cover inverse scattering, hamiltonian structures, geometrical approaches, Painlevé property, symmetries... The list is to be considered open, especially to potentially new mathematical methods and applications. This Workshop is part of thirty years of active participation by the University of Lecce (now University of Salento) in developing international scientific cooperation in Nonlinear Science. A meeting entitled "Nonlinear Evolution Equations and Dynamical Systems" (NEEDS for short) was organized in Lecce in 1979. Successively three other NEEDS Workshops were organized in Gallipoli in 1985, 1991 and 1993, the Workshops entitled "Nonlinear Physics. Theory and Experiment" in Gallipoli in 1995, 2002, 2004, 2006 and 2008, and a Workshop entitled "Nonlinearity, Integrability and All That. Twenty Years After NEEDS'79" in Gallipoli in 1999. The Workshop will take place from Wednesday June 23 (arrival day) to Saturday July 3, (departure day), 2010, at the Ecoresort Le Sirené (Gallipoli Bay) near Lecce, Italy, with all needed facilities as conference and lecture hall, by a sandy beach in a beautiful setting. An all-inclusive fee of Euro 1.150,00 will cover the cost of registration (Euro 150), meals and lodging during the Workshop (in double occupancy rooms with private facilities) and the transportation from Lecce terminal or Brindisi International Airport to Gallipoli and back (for participants arriving on June 23 and leaving on July 3). The all-inclusive rate for accompanying persons is Euro 1.000. Persons interested in participating will receive the second announcement with additional details and the registration form by contacting the Workshop Secretary or checking at http://www.fisica.unisalento.it/nonlinear6/ (to appear in October 2009). Organizers: Marco Boiti and Flora Pempinelli, and Boris Konopelchenko, Dipartimento di Fisica, Università del Salento, 73100 Lecce, marco.boiti@le.infn.it, flora.pempinelli@le.infn.it, konopel@le.infn.it. Co-organizers: Luis Martinez-Alonso, Departamento de Fisica Teorica II, Universidad Complutense, Madrid (Spain), luism@fis.ucm.es ; Andrei K. Pobgrebkov, Steklov Mathematical Institute, Moscow, pogreb@mi.ras.ru. Workshop Secretariat: Maria Concetta Gerardi, Dipartimento di Fisica, Università del Salento, 73100 Lecce, Italy; Phone and FAX +39 0832 297467, also FAX +39 0832 297505, maria.concetta.gerardi@le.infn.it. Sponsors: Università del Salento - Consorzio EINSTEIN - INFN Submitted by: Maria Concetta Gerardi Segretaria Scientifica Dip. Fisica Phone & Fax +39 0832 297467 e-mail maria.concetta.gerardi@le.infn.it http://www.fisica.unisalento.it/Mconcetta ----------------------------- Subject: New book on inverse problems From: Guy Chavent Date: Mon, 12 Oct 2009 NEW BOOK: Nonlinear Least Squares for Inverse Problems, Theoretical Foundations and Step-by-Step Guide for Applications Guy Chavent with 24 figures. ISSN 1434-8322 ISBN 978-90-481-2784-9 e-ISBN 978-90-481-2785-6 DOI 10.1007/978-90-481-2785-6 Springer Dordrecht Heidelberg London New York Library of Congress Control Number: 2009927706 http://www.springer.com/math/book/978-90-481-2784-9 This book provides an introduction into the least squares resolution of nonlinear inverse problems. The first goal is to develop a geometrical theory to analyze nonlinear least square (NLS) problems with respect to their quadratic wellposedness, i.e. both wellposedness and optimizability. Using the results, the applicability of various regularization techniques can be checked. The second objective of the book is to present frequent practical issues when solving NLS problems. Application oriented readers will find a detailed analysis of problems on the reduction to finite dimensions, the algebraic determination of derivatives (sensitivity functions versus adjoint method), the determination of the number of retrievable parameters, the choice of parametrization (multiscale, adaptive) and the optimization step, and the general organization of the inversion code. Special attention is paid to parasitic local minima, which can stop the optimizer far from the global minimum: multiscale parametrization is shown to be an efficient remedy in many cases, and a new condition is given to check both wellposedness and the absence of parasitic local minima. For readers that are interested in projection on non-convex sets, Part II of this book presents the geometric theory of quasi-convex and strictly quasi-convex sets. Quasi-convex sets can be recognized by their finite curvature and limited deflection and possess a neighborhood where the projection is well-behaved. Throughout the book, each chapter starts with an overview of the presented concepts and results. ----------------------------- Subject: Two PhD studentships From: Bill Lionheart Date: Mon, 28 Sep 2009 We have two funded PhD studentships in inverse problems available to start as soon as possible at the University of Manchester The first project is to investigate the potential for combining X-ray scatter information and X-ray tomographic information during simultaneous data acquisition in Real-Time Tomography (RTT) systems for the detection of explosive materials. The main purpose is to explore the potential for combining high speed scatter and transmission tomography systems for automated explosives detection. The position is in collaboration with Rapiscan Systems and is open to any suitable qualified candidate The second is on reconstruction of Electrical Impedance Tomography lung images. Monitoring lungs during mechanical ventilation is an important application of EIT attracting considerable attention from the intensive care community. This project is funded by an EPSRC CASE studentship with Philips Research and requires UK residency (see website for details). Details of these opportunities are can be seen on http://www.maths.manchester.ac.uk/postgraduate/pgadmission/funding.html Submitted by: Bill Lionheart, University of Manchester http://www.maths.manchester.ac.uk/~bl ----------------------------- Subject: Postdoc in Reconstruction Methods for 3D Electrical Impedance Tomography From: Per Christian Hansen Date: Wed, 2 Sep 2009 Postdoc in Reconstruction Methods for 3D Electrical Impedance Tomography A PostDoc position in Reconstruction Methods for 3D Electical Impedance Tomography is available from January 1, 2010, with a duration of 1 year and a possible extension to 2 years. The project is a collaboration between DTU Informatics and DTU Mathematics at the Technical University of Denmark. A full description is available at: http://www.dtu.dk/English/About_DTU/vacancies.aspx?guid=896df604-37f7-4c 25-8c0f-c84f11d2b6e1 The aim of this project is to develop, implement, and investigate fast algorithms for 3D Electrical Impedance Tomography (EIT). The underlying non-linear mathematical problem is severely ill-posed, and hence a useful reconstruction algorithm must incorporate prior information and regularization. In this project we will develop both the necessary mathematical theory for a robust reconstruction algorithm and an efficient numerical implementation. The research will involve: - Development of theory for efficient numerical computations for EIT in 3D. - Numerical implementations of reconstruction algorithms. - Test of numerical algorithms on collected data. The candidate should have a background in applied mathematics, electrical engineering, or scientific computing and a PhD degree (or equivalent), and should demonstrate qualifications or interests in the following: - Mathematical theory for inverse problems. - Numerical methods for large-scale inverse problems. - Reconstruction methods for EIT. - Cross-disciplinary research work. Further information may be obtained from - Professor Per Christian Hansen, phone: +45 45253097, pch@imm.dtu.dk - Associate Professor Kim Knudsen, phone: +45 45253026, k.knudsen@mat.dtu.dk. You can read more about the two departments at www.imm.dtu.dk and www.mat.dtu.dk. The application should be submitted on-line at the homepage no later than October 15, 2009. Please open the link "apply for this job online" at the bottom of the page, and fill in the application form and attach your application and CV. Material that should be given consideration in the assessment must also be attached. All interested candidates irrespective of age, gender, race, religion, or ethnic background are encouraged to apply. Submitted by: Professor Per Christian Hansen Section for Scientific Computing DTU Informatics, Technical University of Denmark Tel +45 45.25.30.97, Fax +45 45.88.26.73 http://www.imm.dtu.dk/~pch ----------------------------- Subject: Pos Doc in Surface Waves, Early Tsunami Detection From: yehuda Date: Mon, 7 Sep 2009 Post-doctoral Scholarship sponsored by Technion-Israel Institute of Technology Department of Civil and Environmental Engineering Post Doc - Surface Waves in a Compressible Ocean with an Application to Early Tsunami Detection Prof. Michael Stiassnie is seeking a suitable qualified student to undertake a Post-Doctoral study in developing theoretical techniques to study surface waves in a compressible ocean, under his supervision. About Technion: For more than eight decades, the Technion-Israel Institute of Technology, which is located in Haifa, has been Israel's primary technological university and the largest center of applied research. It is ranked among the leading technological universities in the world. The Department of Civil and Environmental Engineering has 60 senior faculty members active in research and education, and they currently supervise the education of ~900 undergraduate students, ~240 master degree students, ~85 doctor students, and ~10 post-doctoral students. Project Abstract: The overwhelming majority of ocean-waves studies ignore the minute compressibility of the water, which is expected to have, and in most cases has, negligible effects on the main physical processes. However, a rather straightforward analysis of the linearized problem in constant water depth reveals that for any wave period smaller than 4 times the water depth to the speed of sound ratio; accounting for compressibility gives rise to at least one additional propagating mode. This is rather different from the situation in an incompressible ocean, for which only one propagating mode exists. A disturbance at the ocean floor, such as caused by a submarine earthquake, produces many different modes. Most of this modes are non-propagating (evanescent), and of local importance only. However, the Gravity-Acoustic mode, and the leading Acoustic-Gravity mode propagate away from the earthquake site, and travel to a great distance. The Acoustic-Gravity wave travels significantly faster than the Gravity-Acoustic wave, and thus, is a possible candidate for an early warning about the approach of the Gravity-Acoustic wave which evolves into a tsunami when it hits the coast. The main goals of this research are: (1) provide a ground-breaking theoretical study of the physics of surface-waves on a compressible fluid. The relatively small amount of published material on this topic seems to have left a "vast-territory" which awaits its ground to be broken; and (2) to investigate the application of utilizing the Acoustic-Gravity waves for early detection of tsunami (the Gravity-Acoustic wave). This is of a certain risk, since it is not clear that, in case of realistic scenarios and geometries, the free surface-elevation, the flow velocities, or the pressure of the Acoustic-Gravity waves will be strong enough, compared to the background noise, to enable their measurement. If however, they will be found measurable by existing instruments, and enable early detection of tsunamis, then the high-gain is self evident. Selection Criteria 1. Ph.D. degree related to fluid-mechanics, obtained not earlier than 31.12.2007 (essential) 2. Strong analytical and mathematical skills (essential) 3. A good working knowledge of programming (desirable) 4. A good knowledge of English (desirable) 5. Experience in water-waves related research (advantage) Commencement Date: January 2010 or earlier Scholarship: Between US$ 18,000 to US$ 30,000 (depending on qualifications and background) per annum, tax exempt. Duration: two or three years Application and Contact Professor Michael Stiassnie Department of Civil and Environmental Engineering Division of Environmental, Water and Agricultural Engineering Technion-Israel Institute of Technology Haifa 32000, Israel Tel: +972-4-8293361 ; Fax: +972-4-8228898 e-mail: miky@tx.technion.ac.il http://www.technion.ac.il/~cee/stiassnie ----------------------------- Subject: Inverse Problems, Vol. 25, September & October 2009 From: Emma Avery Date: Thu, 13 Aug 2009 Inverse Problems September 2009 Volume 25, Issue 9 Table of Contents Analytical inversion of the Compton transform using the full set of available projections Voichita Maxim, Mirela Frandes and Remy Prost Solvability of a problem of integral geometry via an inverse problem for a transport-like equation and a numerical method Arif Amirov, Mustafa Yildiz and Zekeriya Ustaoglu Experimental design and estimation of growth rate distributions in size-structured shrimp populations H T Banks, Jimena L Davis, Stacey L Ernstberger, Shuhua Hu, Elena Artimovich and Arun K Dhar Iteration methods on sideways parabolic equations Youjun Deng and Zhenhai Liu Regularization parameter selection methods for ill-posed Poisson maximum likelihood estimation Johnathan M Bardsley and John Goldes Efficient solution of a three-dimensional inverse heat conduction problem in pool boiling Herbert Egger, Yi Heng, Wolfgang Marquardt and Adel Mhamdi Numerical studies of the inverse Born series for diffuse waves Shari Moskow and John C Schotland Explicit isospectral flows for the AKNS operator on the unit interval L Amour Sensitivity computation of the $\ell_{1}$ minimization problem and its application to dictionary design of ill-posed problems L Horesh and E Haber On time reversal mirrors Albert C Fannjiang On the Marchenko inverse scattering procedure with partial information on the potential Alexei Rybkin Some Ambarzumyan-type theorems for Dirac operators Chuan-Fu Yang and Xiao-Ping Yang SVD-tail: a new linear-sampling reconstruction method for inverse scattering problems M'Barek Fares, Serge Gratton and Philippe L Toint CONFERENCE ANNOUNCEMENT International Conference on Inverse Problems ****************** Inverse Problems October 2009 Volume 25, Issue 10 Table of Contents Moment inversion problem for piecewise D-finite functions Dmitry Batenkov Direct and inverse problems related to MEMS Daniele Cassani, Barbara Kaltenbacher and Alfredo Lorenzi A unified approach to Darboux transformations Tuncay Aktosun and Cornelis van der Mee Iterative total variation schemes for nonlinear inverse problems Markus Bachmayr and Martin Burger Extracting the support function of a cavity in an isotropic elastic body from a single set of boundary data Masaru Ikehata and Hiromichi Itou The hard pulse approximation for the AKNS (2 x 2)-system Charles L Epstein and Jeremy Magland Stability and global-in-time results for an inverse problem related to a nuclear reactor model Fabrizio Colombo Inverse problems for Sturm--Liouville operators on bush-type graphs V Yurko A discrete spherical x-ray transform of orientation distribution functions using bounding cubes I G Kazantsev, S Schmidt and H F Poulsen The inverse scattering transform and squared eigenfunctions for a degenerate 3 x 3 operator D J Kaup and Jianke Yang On revealing graph cycles via boundary measurements M I Belishev and N Wada Improvements on a predictor--corrector strategy for parameter estimation with several data types Tao Feng and Trond Mannseth Individual articles are free for 30 days following their publication on the web. This issue is available at: http://www.iop.org/EJ/toc/0266-5611/25/10 Submitted by: Emma Avery, Senior Production Editor, Inverse Problems, IOP Publishing. ----------------------------- Subject: Journal of Inverse and Ill-posed Problems, issues 5-6 (2009) From: "Simon.Albroscheit@degruyter.com" Date: Wed, 19 Aug 2009 Journal of Inverse & Ill-posed Problems 2009 Volume 17, Issue 5 Table of Contents Numerical methods for solving inverse problems for time fractional diffusion equation with variable coefficient A. N. Bondarenko, D. S. Ivaschenko On inverse scattering at high energies for the multidimensional nonrelativistic Newton equation in electromagnetic field A. Jollivet Representation formulae for solutions to direct and inverse degenerate in time first-order Cauchy problems in Banach spaces A. Lorenzi Recover implied volatility of underlying asset from European option price Lu Lu, Lei Yi Modeling and optimization of a propeller by means of inverse problems H. Telib, A. Iollo, L. Zannetti ****************** Journal of Inverse & Ill-posed Problems 2009 Volume 17, Issue 6 Table of Contents Identification of a source for parabolic and hyperbolic equations with a parameter N. L. Abasheeva A sensitivity matrix based methodology for inverse problem formulation A. Cintrón-Arias, H. T. Banks, A. Capaldi, A. L. Lloyd Well-posedness of an inverse problem of Navier-Stokes equations with the final overdetermination J. Fan, G. Nakamura Modified Landweber iterations in a multilevel algorithm applied to inverse problems in piezoelectricity T. Lahmer A variational approach to the Cauchy problem for nonlinear elliptic differential equations I. Ly, N. Tarkhanov A new robust algorithm for solution of pressure/rate deconvolution problem E. A. Pimonov, M. Onur, F. J. Kuchuk International Conference and Young Scientists School Theory and Computational Methods for Inverse and Ill-posed Problems 5th International Conference Inverse Problems: Modeling and Simulation All issues are hosted on www.reference-global.com -- de Gruyter's integrated platform for eBooks, eJournals, databases. Submitted by: Robert Plato Publishing Editor, Mathematics/Physics, Walter de Gruyter Genthiner Str. 13, 10785 Berlin, Germany Tel: +49 30 26005-101 E-mail: robert.plato@degruyter.com Fax: +49 30 26005-352 www.degruyter.com ----------------------------- Subject: Table of Contents, Nonlinear Analysis: Modelling and Control From: Romas Baronas Date: Sun, 13 Sep 2009 Nonlinear Analysis: Modelling & Control 2009 Vol. 14, No. 3 Table of Contents Pseudo Almost Periodic Sequence Solutions of Discrete Time Cellular Neural Networks S. Abbas Effects of Viscous and Joules Dissipation on MHD Flow, Heat and Mass Transfer past a Stretching Porous Surface Embedded in a Porous Medium S.P. Anjali Devi, B. Ganga Estimation of a Distribution Function under Sampling on Two Occasions V. Chadysas Local Hopf Bifurcation and Stability of Limit Cycle in a Delayed Kaldor-Kalecki Model A. Kaddar, H. Talibi Alaoui MHD Flow past a Semi-Infinite Vertical Plate with Mass Transfer G. Palani, U. Srikanth Saddlestrapping Sarjinder Singh On the Sojourn Time of the Brownian Process in a Multidimensional Spherek S. Steisunas Unsteady Oscillatory Flow and Heat Transfer in a Horizontal Composite Porous Medium Channel J.C. Umavathi, A.J. Chamkha, A. Mateen, A. Al-Mudhaf For a paper submission, please refer to http://www.lana.lt/journal Dr. Romas Baronas, Journal Secretary, Nonlinear Analysis: Modelling and Control A free on-line edition is available at: http://www.lana.lt/journal/issues.php ------- end -------