IPNet Digest Volume 8, Number 01 January 30, 2001 Today's Editor: Patricia K. Lamm Michigan State University Today's Topics: Postdoctoral Positions in Signal Processing and Inverse Problems Graduate Group in Applied Mathematics at UC Davis New Book: Inverse and Crack Identification Problems Table of Contents: Inverse Problems Table of Contents: Inverse Problems in Engineering Table of Contents: Mathematics of Control, Signals, and Systems 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: Bart Truyen Subject: Open positions: ETRO-IRIS Dep. of Vrije Universiteit Brussel Date: Fri, 08 Dec 2000 Post-Doctoral Research Associate Numerical Analysis (ref. 231000/1) Outstanding applicants are sought in the areas of numerical analysis, scientific computing, inverse problems, geophysics or signal processing. The successful candidate will be expected to conduct research on the numerical aspects of geophysical inversion involving Ground Penetrating Radar (GPR) and Electrical Impedance Tomography (also known as resistance imaging). The application domain is that of imaging shallowly buried objects, and in particular the identification and localization of anti-personnel mines. Research is funded through the Concerted Research Action "Numerical issues in tomographic shallow subsurface imaging - With application to landmine detection-)," the Bilateral Research Project "On the exploration of Electrical Impedance Tomography as a novel method for subsurface detection of shallowly buried objects - With application to humanitarian land mine detection," and the National Science Foundation project "Stabilized deconvolution methods for inverse problems - With application to linear (Magnetic Resonance imaging) and nonlinear (Ground Penetrating Radar imaging) image reconstruction." Additional information about these projects can be found in the accompanying web pages, see http://www.etro.vub.ac.be/Research/IRIS/Research/ANA-IP/ANA-IP_welcome_page. asp. Working in close collaboration with other team members engaged in measurement aspects, the successful candidate will participate in research on the numerical issues associated with (non-linear) ill-posed inverse problems. Strong emphasis will be placed on advanced least-squares problem formulations, regularization techniques, multilevel methods, and optimization. The initial appointment will be for two years and is renewable with another 3 years. Candidates must have completed all the requirements for the doctoral degree by no later than January 1, 2001. Acquaintance with the subject of geophysical imaging, and Electrical Impedance Tomography in particular, is a clear asset but is not regarded as an absolute prerequisite. Preference will be given to those candidates who best meet the research needs of the group. Successful applicants will find at the Department of Electronics and Information Processing ETRO, a stimulating environment conducive to professional growth. The ANA-IP research group maintains active collaborative relationships with other research groups in the domain of signal processing, numerical mathematics and inverse problems, both nationally and internationally. Inquiries may be addressed to Bart Truyen, Group Leader Applied Numerical Algorithms & Inverse Problems (ANA-IP), Department of Electronics and Information Processing (ETRO), Vrije Universiteit Brussel - VUB, Pleinlaan 2, B-1050, Brussels, Belgium, batruyen@etro.vub.ac.be, http://www.etro.vub.ac.be. The Vrije Universiteit Brussel - VUB is an equal opportunity/affirmative action employer. Ph.D. Research Grant Numerical Analysis (ref. 231000/1bis) Applications are invited for a research position in the areas of numerical analysis, scientific computing, inverse problems, geophysics or signal processing. The successful candidate will be expected to conduct research on the numerical aspects of geophysical inversion involving Ground Penetrating Radar (GPR) and Electrical Impedance Tomography (also known as resistance imaging). The application domain is that of imaging shallowly buried objects, and in particular the identification and localization of anti-personnel mines. Research is funded through the Concerted Research Action "Numerical issues in tomographic shallow subsurface imaging - With application to landmine detection-)," the Bilateral Research Project "On the exploration of Electrical Impedance Tomography as a novel method for subsurface detection of shallowly buried objects - With application to humanitarian land mine detection," and the National Science Foundation project "Stabilized deconvolution methods for inverse problems - With application to linear (Magnetic Resonance imaging) and nonlinear (Ground Penetrating Radar imaging) image reconstruction." Additional information about these projects can be found in the accompanying web pages pages, see http://www.etro.vub.ac.be/Research/IRIS/Research/ANA-IP/ANA-IP_welcome_page. asp. Working in close collaboration with other team members engaged in measurement aspects, the successful candidate will participate in research on the numerical issues associated with (non-linear) ill-posed inverse problems. Strong emphasis will be placed on advanced least-squares problem formulations, regularization techniques, multilevel methods, and optimization. Appointments will be for 4 years in the first instance, with a two-year probationary period. Candidates for must have completed a M.Eng., M.Sc. or equivalent degree in electrical engineering, applied mathematics or physics. Special consideration will be given to candidates with a demonstrated experience in the domain of signal processing and E.M., or a closely related subject in the field of tomographic imaging. The research position will entail the preparation of a Ph.D. degree in Engineering or Applied Sciences (possibly in collaboration with the originating research institute). Preference will be given to those candidates who best meet the research needs of the group. Successful applicants will find at the Department of Electronics and Information Processing ETRO, a stimulating environment conducive to professional growth. The ANA-IP research group maintains active collaborative relationships with other research groups in the domain of signal processing, numerical mathematics and inverse problems, both nationally and internationally. Inquiries may be addressed to Bart Truyen, Group Leader Applied Numerical Algorithms & Inverse Problems (ANA-IP), Department of Electronics and Information Processing (ETRO), Vrije Universiteit Brussel - VUB, Pleinlaan 2, B-1050, Brussels, Belgium, batruyen@etro.vub.ac.be, http://www.etro.vub.ac.be. The Vrije Universiteit Brussel - VUB is an equal opportunity/affirmative action employer. Post-Doctoral Research Associate Non-linear Optimization (ref. 231000/2) Outstanding applicants are sought in the areas of optimization, approximation theory. or numerical analysis, however, individuals with experience in closely-related fields are also encouraged to apply. The successful candidate will be expected to participate in research on the application of Radial Basis Functions to the problem of finding solutions to implicitly described nonlinear optimization problems, such arising from the discretisation of ill-posed problems. The application domain is that of geophysical inversion involving Ground Penetrating Radar (GPR) and Electrical Impedance Tomography (also known as resistance imaging). Research is funded through the Concerted Research Action "Numerical issues in tomographic shallow subsurface imaging - With application to landmine detection-)," the Bilateral Research Project "On the exploration of Electrical Impedance Tomography as a novel method for subsurface detection of shallowly buried objects - With application to humanitarian land mine detection," and the National Science Foundation project "Stabilized deconvolution methods for inverse problems - With application to linear (Magnetic Resonance imaging) and nonlinear (Ground Penetrating Radar imaging) image reconstruction." Additional information about these projects can be found in the accompanying web pages, see http://www.etro.vub.ac.be/Research/IRIS/Research/ANA-IP/ANA-IP_welcome_page. asp. Successful candidates are expected to work closely with other researchers engaged in numerical analysis. The initial appointment will be for two years and is renewable with another 3 years. Candidates must have completed all the requirements for the doctoral degree by no later than January 1, 2001. Preference will be given to those candidates who best meet the research needs of the group. Successful applicants will find at the Department of Electronics and Information Processing ETRO, a stimulating environment conducive to professional growth. The ANA-IP research group maintains active collaborative relationships with other research groups in the domain of signal processing, numerical mathematics and inverse problems, both nationally and internationally. Inquiries may be addressed to Bart Truyen, Group Leader Applied Numerical Algorithms & Inverse Problems (ANA-IP), Department of Electronics and Information Processing (ETRO), Vrije Universiteit Brussel - VUB, Pleinlaan 2, B-1050, Brussels, Belgium, batruyen@etro.vub.ac.be, http://www.etro.vub.ac.be. The Vrije Universiteit Brussel - VUB is an equal opportunity/affirmative action employer. Post-Doctoral Research Position on Multi-Spectral/Multi-Temporal IR Image Analysis (ref. 231000/4) A Post Doctoral vacancy exists for a fixed term appointment, for a period of 24 months, to work in the Department of Electronics and Information Processing (ETRO) at the Vrije Universiteit Brussel - University of Brussels - as part of EU projects in the field of Humanitarian Land Mine Detection. The objective of the research is designing and using remotely sensed observations in detecting Anti Personnel (AP) Mines and Minefields. The current emphasis is focussed on improving understanding of visible, infrared and multispectral measurements as an estimate of minefield properties including, background soil and litter, AP mines. Subtasks include improvements to field instrumentation and measurements, and the exploitation of additional value of measuring multispectral and infrared emissions to address problems based on the spectral and thermal characteristics of soil, vegetation and man-made objects. The position first requires experience in the use Multispectral and InfraRed imaging. The objective of this position will be to develop relationships between the multispectral IR properties of Anti Personnel (AP) Mines and their environment with emphasis on the detection and recognition of AP mines. Candidates must have background knowledge of environmental remote sensing, image analyses and mathematical modeling. Candidates must have demonstrated ability to (i) initiate and conduct independent research in discipline related to the field of multispectral and thermal imaging and (ii) to publish their research results in peer reviewed journals. Skills in mathematical, statistical and computer sciences to perform qualitative and quantitative research are required. Knowledge of scientific and technology aspects of electro-optical imaging systems and remote sensing including, calibration and image analysis. Candidates must have a Ph.D. for example in Physical Sciences or Signal and Image Processing or a related discipline are appropriate for the position. Related Websites of interest: More information on our R&D in the field of Humanitarian Land Mine Detection. can be found in http://www.etro.vub.ac.be Successful applicants will find at the Department of Electronics and Information Processing ETRO, a stimulating environment conducive to professional growth. The research group maintains active collaborative relationships with other research groups in the domain of signal processing, numerical mathematics and inverse problems, both nationally and internationally. Applications, including a C.V., list of publications and the names of two referees may be addressed to Prof. Hichem Sahli, Group Leader Mine Detection (DEMINE), ETRO Department, Vrije Universiteit Brussel - VUB, Pleinlaan 2, B-1050, Brussels, Belgium. Tel: ++32 (0)2 629 29 16, Fax: ++ 32 (0)2 629 28 83 e-mail: hsahli@etro.vub.ac.be Submitted by: Bart Truyen Group leader Applied Numerical Analysis & Inverse Problems (ANA-IP) VUB - Free University Brussels Faculty of Applied Sciences ETRO Department - IRIS Research Group Pleinlaan 2 - B-1050 Brussel - Belgium Tel. ++32-2-629.39.54 Fax. ++32-2-629.28.83 E-mail : batruyen@etro.vub.ac.be World Wide Web pages : ETRO/VUB Pages : http://www.etro.vub.ac.be/ ----------------------------- From: Bill Broadley Subject: Applied Mathematics at UC Davis Date: Wed, 6 Dec 2000 APPLIED MATHEMATICS AT UC DAVIS The Graduate Group in Applied Mathematics (GGAM) at the University of California, Davis, invites applications from undergraduate students interested in pursuing graduate studies (M.S and Ph.D degrees) in a strong and vibrant program. We offer teaching and research assistantships and fellowships to outstanding candidates. The group consists of approximately sixty faculty members that carry out research in many areas of the mathematical, physical, biological, chemical and engineering sciences. The research interests of the members of the GGAM and their students include mathematical biology, computational neuroscience, atmospheric sciences, continuum mechanics, computational fluid dynamics, hydrology, optimization and control, theoretical chemistry, computer and engineering sciences, mathematical physics, signal and image processing, statistics, combinatorial and geometric algorithms. In addition to having faculty members who are internationally- renowned experts in applied and computational mathematics, the GGAM includes faculty who are leading experts in the sciences and engineering. Many of our students hold internships at private and government research laboratories. In addition to an exciting research environment, the University of California and the town of Davis provide a comfortable small town atmosphere within an easy drive of the rich recreational and cultural facilities of San Francisco, Sacramento, and the Lake Tahoe region. The Graduate Group in Applied Mathematics at UC Davis accepts online graduate applications. To apply or to receive more details about the graduate program, please visit http://www.math.ucdavis.edu/ggam/ or write to Graduate Coordinator Graduate Group Applied Mathematics Department of Mathematics One Shields Avenue University of California, Davis Davis, CA 95616-8633 Please note: The GGAM requires that all applicants take the GRE to be considered for admission. The GRE's should be taken in October or December. The TOEFL (Test of English as a Foreign Language) score is required for all foreign applicants whose native language is not English or who have not studied at institutions where English is the language of instruction. The deadline for fellowship applications is January 15th. ----------------------------- From: Georgios Stavroulakis To: ipnet-digest@math.msu.edu Subject: New Book: Inverse and Crack Identification Date: Tue, 12 Dec 2000 New Book Announcement Inverse and Crack Identification Problems in Engineering Mechanics by Georgios E. Stavroulakis Institute of Applied Mechanics, Dept. of Civil Engineering, Carolo Wilhelmina Technical University, Braunschweig, Germany Habilitationsschrift. FB Bauingenieurwesen der TU Braunschweig. Die ``venia legendi'' fuer das Fachgebiet ``Mechanik'' wurde am 29. Juni 2000 erworben. Habilitation Thesis. Civil Engineering Dept., TU Braunschweig. The ``venia legendi'' for the scientific area of ``Mechanics'' was given on 29th of June 2000. Short description. Inverse and crack identification problems are of paramount importance for health monitoring and quality control purposes arising in critical applications in civil, aeronautical, nuclear, and general mechanical engineering. Mathematical modeling and the numerical study of these problems require high competence in computational mechanics and applied optimization. This is the first monograph which provides the reader with all the necessary information. Delicate computational mechanics modeling, including nonsmooth unilateral contact effects, is done using boundary element techniques, which have a certain advantage for the construction of parametrized mechanical models. Both elastostatic and harmonic or transient dynamic problems are considered. The inverse problems are formulated as output error minimization problems and they are theoretically studied as a bilevel optimization problem, also known as a mathematical problem with equilibrium constraints. Beyond classical numerical optimization, soft computing tools (neural networks and genetic algorithms) and filter algorithms are used for the numerical solution. The book provides all the required material for the mathematical and numerical modeling of crack identification testing procedures in statics and dynamics and includes several thoroughly discussed applications, for example, the impact-echo nondestructive evaluation technique. Audience. The book will be of interest to structural and mechanical engineers involved in nondestructive testing and quality control projects as well as to research engineers and applied mathematicians who study and solve related inverse problems. People working on applied optimization and soft computing will find interesting problems to apply to their methods and all necessary material to continue research in this field. Contents. Preface. I. Introduction. Problem Description. 1. Direct and inverse problems. II. Theoretical and Computational Tools. 2. Computational mechanics. 3. Computational and structural optimization. 4. Selected soft computing tools. III. Applications to inverse problems. 5. Static problems. 6. Steady-state dynamics. 7. Transient dynamics. Publication details. Kluwer Academic Publishers, Dordrecht Applied Optimization Vol. 46 Hardbound, ISBN 0-7923-6690-5 December 2000, 240 pp. NLG 250.00 / USD 122.00 / GBP 78.00 WWW-page and online order. http://www.wkap.nl/book.htm/0-7923-6690-5 Submitted by: Priv.-Doz. Dr.-Ing. Georgios E. Stavroulakis Institute for Applied Mechanics * Tel ++ 49 531 391 7107 Technical University Braunschweig, Spielmannstr. 11, P.O.Box 3329 D-38106 Braunschweig, Germany * URL http://www.tu-bs.de/~i5042301 Email: g.stavroulakis@tu-bs.de, gestavr@cc.uoi.gr ----------------------------- From: "Janet Thomas" Subject: Contents list for Inverse Problems vol 17, issue 1 Date: Mon, 29 Jan 2001 Inverse Problems Volume 17, Issue 1 Table of Contents TOPICAL REVIEW Acoustic time-reversal mirrors M Fink and C Prada PAPERS High-frequency estimates for the Neumann scattering phase in non-smooth obstacle scattering H Chen and B D Sleeman An inverse problem for identification of a time- and space-dependent memory kernel in viscoelasticity J Janno and L von Wolfersdorf Recovery of an inhomogeneity in an elliptic equation H Kang, K Kwon and K Yun On reconstruction from a partial knowledge of the Neumann-to-Dirichlet operator M Ikehata The discrete Lotka--Volterra system computes singular values S Tsujimoto, Y Nakamura and M Iwasaki Total size estimation and identification of multiple anomalies in the inverse conductivity problem O Kwon and J K Seo On the numerical inversion of the Laplace transform for nuclear magnetic resonance relaxometry P Barone, A Ramponi and G Sebastiani Modelling and estimating uncertainty in parameter estimation H T Banks and K L Bihari Inversion of the attenuated Radon transform F Natterer A Bayesian approach to crack detection in electrically conducting media K E Andersen, S P Brooks and M B Hansen Identifying the volatility of underlying assets from option prices L-S Jiang and Y-S Tao Some preconditioners for harmonic spherical spline problems G Moreaux Cormack-type inversion of exponential Radon transform A Puro CORRIGENDUM Design strategies for electromagnetic geophysical surveys H Maurer, D E Boerner and A Curtis Submitted by: Janet Thomas Senior Production Editor Institute of Physics Publishing Dirac House, Temple Back, Bristol BS1 6BE, UK Tel: +44 (0)117 930 1081 Fax: +44 (0)117 929 4318 E-mail: janet.thomas@ioppublishing.co.uk=20 WWW: http://www.iop.org=20 ----------------------------- From: james beck Subject: Inverse Problems in Engineering table of contents Date: Fri, 15 Dec 2000 Inverse Problems in Engineering 2000 Vol. 8, No. 6 Table of Contents Input Forces Estimation of a Cantilever Beam C.-K.Ma and D.-C.Lin A Three-Dimensional Inverse Method Using Navier- Stokes Equations for Turbomachinery Blading Z. Wang, R. Cai, H. Chen and X. Jia Numerical and Experimental Simulation for Heat Flux and Cutting Temperature Estimation Using Three-Dimensional Inverse Heat Conduction Technique F. R. S. Lima, A. R. Machado, G. Guimaraes and S. Guths An Iterative BEM for the Cauchy Steady State Heat Conduction Problem in an Anisotropic Medium with Unknown Thermal Conductivity Tensor N. S. Mera, L. Elliott, D. B. Ingham and D. Lesnic ----------------------------- From: Secretary Support - Magrijn Subject: Re: Journal MCSS Date: Sat, 27 Jan 2001 Mathematics of Control, Signals, and Systems 2000 Vol. 13, No. 4 Table of Contents On partial order characterizations of information structures D. Teneketzis and M.S. Andersland Time-varying and adaptive discrete-time low-gain control of infinite-dimensional linear systems with input nonlinearities H. Logemann and E.P. Ryan Robust properties of risk-sensitive control P. Dupuis, M.R. James, and I. Petersen Continuous-time blind channel deconvolution using Laguerre shifts A. Hansson and B. Wahlberg Optimal average case estimation in Hilbert norms B. Kacewicz INFORMATION Information on MCSS including tables of contents is available at its home pages: www.cwi.nl/~schuppen/mcss/mcss.html www.math.rutgers.edu/~sontag/mcss.html Address for submissions: J.H. van Schuppen (Co-Editor MCSS) CWI P.O.Box 94079 1090 GB Amsterdam The Netherlands Bradley Dickinson, Eduardo Sontag, Jan van Schuppen (Editors) Submitted by: Corry Magrijn (Secretary) for Jan H. van Schuppen (Co-Editor) ------- end -------