IPNet Digest Volume 7, Number 08 October 15, 2000 Today's Editor: Patricia K. Lamm Michigan State University Today's Topics: International Conference: Applied Inverse Problems International Symposium: Inverse Problems in Engineering Mech. SIAM Meeting: 2001 SIAM Annual Meeting Program: Workshop on Inverse Problems in Leeds Positions: Young Researchers Group in Inverse Problems Position: Research Scientist in Image Reconstruction Methods Positions: Mathematics Department Positions at UC Davis Positions: Visiting Mathematics Positions at UC Davis Table of Contents: Mathematics of Control, Signals, and Systems Table of Contents: Numerical Algorithms Table of Contents: Linear Algebra and Its Applications 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: Lothar Reichel Subject: AIP 2001 Date: Sat, 23 Sep 2000 International Conference on Applied Inverse Problems: Theoretical and Computational Aspects is to be held in Montecatini, Italy, June 18-22, 2001. The purpose of the meeting is to bring together scientists and engineers who work on theoretical and computational aspects of inverse problems. The meeting will consist of invited talks, contributed talks and minisymposia. The following speakers have tentatively agreed to present invited lectures: S. Arridge M. Bertero A. Bjorck T. F. Chan D. Colton D. Donoho L. Elden H. W. Engl I. Galligani G. H. Golub A. Grunbaum M. Hanke P. C. Hansen J. McLaughlin J. Nagy Z. Nashed F. Natterer R. Pike R. J. Plemmons W. Rundell P. C. Sabatier F. Santosa E. Somersalo C. Vogel J.-P. Zolesio Details about the conference, such as invited speakers, information on submission of contributed presentations and minisymposia, registration and accommodation, as well as travel information, a map and a Tuscany picture show can be found at the conference web site http://lanczos.cwru.edu/~aip2001 Montecatini is a popular spa located in Tuscany close to Florence. For inquiries about the conference, please send e-mail to aip2001@mcs.kent.edu Organizing and Scientific Committee: M. Bertero, D. Calvetti, T. F. Chan, G. H. Golub, G. Inglese, A. Murli, R. J. Plemmons, L. Reichel, S. Seatzu, F. Sgallari and G. Talenti ----------------------------- From: Masataka Tanaka Subject: Symposium on Inverse Problems in Engineering Mechanics Date: Tue, 10 Oct 2000 Announcement: International Symposium on Inverse Problems in Engineering Mechanics (ISIP2001) February 6 - 9, 2001 at the hotel "MIELPARQUE NAGANO", Nagano City, Japan (http://homer.shinshu-u.ac.jp/ISIP2001/) Organized by Department of Mechanical Systems Engineering, Shinshu University, Japan Co-Organized by The University of Texas at Arlington, USA Ecole Polytechnique, France Sponsored by Ministry of Education, Science, Sports and Culture, Japan Co-sponsored by Japan Society for Computational Methods and Engineering (JASCOME) Chair Prof. Tanaka, Masa., Shinshu University, Japan mailto:dtanaka@gipwc.shinshu-u.ac.jp Co-Chair Prof. Dulikravich, G.S., The University of Texas at Arlington, USA mailto:dulikra@mae.uta.edu OBJECTIVES Inverse Problems can be found in many topics of engineering mechanics. Following the first IUTAM Symposium in Tokyo held in May 1992, the second one in Paris held in 1994, the third one in 1998, and also the last successful Symposium held in March 2000 in Nagano City, we think it should be very fruitful to gather researchers and engineers again for exchange of the latest ideas and discussion on recent developments. The Symposium will again be financially supported by the Japanese Government. The following general areas will be the subject of presentations and discussions at ISIP2001: mathematical and computational aspects of the inverse problems, parameter or system identification, shape determination, sensitivity analysis, optimization, material property characterization, ultrasonic nondestructive testing, elastodynamic inverse problems, thermal inverse problems, and other engineering applications. The selected papers presented at the Symposium will be published after the symposium as a hard-cover book from an established publisher. SYMPOSIUM LOCATION The Symposium will be held at Mielparque Nagano Hotel which is only five minutes walk from Nagano Station in Nagano City. Nagano City is located at the center of Japan's main island, Honshu, and about 90 minutes by a bullet train, called Shinkansen, from Tokyo. Nagano is surrounded by beautiful high mountains and it is famous for natural beauty and many hot springs. The 1998 Winter Olympic Games was held in this city. OFFICIAL LANGUAGE The symposium language is English. CALL FOR PAPERS Papers are invited on the topics related to the wide area of inverse problems in engineering mechanics. Contributors are requested to send as soon as possible via email a MSWord, TeX, post-script, or Acrobat pdf of the abstract to the Chair of the Symposium (mailto:dtanaka@gipwc.shinshu-u.ac.jp). An extended abstract should be not longer than four (4) single-spaced pages of A4 format written in English. Shorter abstracts can also be accepted, if a comprehensive explanation of the presentation is given. The abstracts, which are recommended by the Symposium Committees for presentation at the Symposium, will be published in a soft-cover booklet which will be available at the Symposium. If the papers are presented at the Symposium and recommended by the Symposium Committees for publication, the paper will be included in the Symposium book which will appear after the Symposium from the publisher, Elsevier Science. IMPORTANT DATES Deadline for extended abstract within 4 pages of A4 sheet: October 20, 2000 Notification of acceptance: December 11, 2000 Deadline for final camera-ready manuscript: February 6, 2001 Conference: February 6-9, 2001 The above deadline date of extended abstract is flexible, if in advance you confer with the symposium chair, Prof. Masa. Tanaka (mailto:dtanaka@gipwc.shinshu-u.ac.jp), about your situation. Note that during the symposium only a soft-cover volume of extended abstracts will be available. The symposium book of selected papers will be published by an established publisher after the symposium. The instructions for authors concerning the final camera-ready manuscript will in due course be sent to those whose abstracts are accepted for presentation at the Symposium. Submitted by: Masa. Tanaka Chair of the ISIP2001 Symposium Department of Mechanical Systems Engineering Faculty of Engineering SHINSHU UNIVERSITY 4-17-1 Wakasato, Nagano 380-8553, Japan Fax: +81-26-269-5124; Tel: +81-26-269-5120 Mailto:dtanaka@gipwc.shinshu-u.ac.jp ----------------------------- From: cyoung@siam.org Subject: Announcement: SIAM 2001 Annual Meeting Date: Thu, 07 Sep 2000 Announcement: 2001 SIAM Annual Meeting (AN01) Location: Town & Country Hotel, San Diego, CA, USA Dates: July 9-13, 2001 Call for Papers To submit go to: http://www.siam.org/meetings/an01/ Submission Deadlines: MiniSymposium Proposals - 01/15/01 Abstracts in Lecture or Poster format - 02/09/01 For additional information, contact SIAM Conference Department at siam@meetings.org ----------------------------- From: Bill Lionheart Subject: Programme for British Workshop on Inverse Problems in Leeds Date: Thu, 05 Oct 2000 The Programme for the next workshop on Inverse Problems in Leeds follows Leeds, Wednesday November 1st The next meeting of the workshop will be held at the University of Leeds on Wednesday 1st November Programme: 1:30 Dr R. Potthast (Brunel University) "The back projection operator - a flexible tool for inverse scattering" Prof. D. Natroshvili (Tbilisi) "Direct and Inverse Fluid-Structure Interaction Problems" Dr S. Chandler-Wilde (Brunel University) "Inverse scattering by rough surfaces" 3.20 - 3.40 Tea Dr K. Hutcheson (University of Edinburgh) Constructing an Improved Picture of a Hydrocarbon Reservoir Using Pressure Transient and Material Balance Methods Dr Toropov (University of Bradford) Use of Approximation Techniques and Genetic Programming for Optimization and Inverse Problems The workshop will take place in the Roger Stevens Building (close to the School of Mathematics). From 1.30 pm until 3.20pm it will be in Lecture Theatre 9 and from 3.40 pm until the end it will be in Lecture Theatre 8. Further information: 1) Accommodation: If you require accommodation over-night please let us know well in advance. 2) Directions: If you require directions on how to reach Leeds University and the School of Mathematics please include your address and we will send to you a map of the campus. Leeds University is situated at about 15 minutes walk from the train station, whilst the School of Mathematics is situated adjacent to the main library (Edward Boyle library).The Roger Stevens Building is 2 Minutes walk from the School of Mathematics. MAP 3) Car parking: If you are traveling with a car you can park it in the campus for the day but you need to let us know your car registration number in advance. Contacts: Professor B.D.Sleeman e-mail: bds@amsta.leeds.ac.uk tel: 0113-2335188 or Dr Lionel Elliott (l. e-mail: l.elliott@amsta.leeds.ac.uk tel: 0113 233 5121 Department of Applied Mathematics University of Leeds, Leeds LS2 9JT The British Workshops on Inverse Problems are supported by the London Mathematical Society and Institute of Physics Publishing. Submitted by: Dr W.R.B. Lionheart, Department of Mathematics UMIST, PO Box 88, Manchester, M60 1QD UK Tel +44- 161-200-8978 Fax +44-161-200 3669 Bill.Lionheart@umist.ac.uk ----------------------------- From: "Roland Potthast" Subject: Young researchers group: positions available Date: Mon, 18 Sep 2000 Young researchers group in inverse problems The Institut for Numerical and Applied Mathematics of the University of Göttingen in Germany is currently establishing a young researchers group with the title "New Numerical Methods for the Solution of Inverse Problems". This group will be created through a recent initiative of the state of Lower Saxony. Within a five year period the objective of the group will be to develop new numerical methods for the solution of inverse problems for partial differential equations, in particular for three-dimensional inverse scattering problems and related problems. This research will include both the theoretical foundations and the numerical implementation of the methods including tests with real data arising in applications. Fur further details see also http://www.scienceatlas.de/potthast/nachwuchsforschergruppe The group will be lead by Privatdozent Dr. Roland Potthast (age 33). Currently, a postdoc position and two PhD positions are available. The salary will be according to BAT IIa (Postdoc) and BAT IIa/2 (PhD) with additional finances arising from industry projects. Application from both EU and international countries are strongly encouraged. The University of Göttingen aims at increasing the proportion of women within its scientific personnel and therefore explicitly encourages qualified women to apply. In case of equivalent qualifications, women will be given special consideration. In case of equivalent qualifications, handicapped applicants will be given priority. Applications should be directed to the Director of the Institut. Institut f. Numerische und Angewandte Mathematik Lotzestr. 16-18, D 37083 Göttingen, Germany Submitted by: Dr. habil. Roland Potthast potthast@scienceatlas.com ----------------------------- From: "Dr. Jose Carlos Gamio Roffe" Subject: Research Scientist in Image Reconstruction Methods Date: Fri, 29 Sep 2000 A RESEARCH SCIENTIST (PhD) is required, to work at the Mexican Petroleum Institute in Mexico City, in the field of IMAGE RECONSTRUCTION METHODS FOR ELECTRICAL CAPACITANCE TOMOGRAPHY In electrical capacitance tomography (ECT) we have a circular array of contiguous rectangular electrodes (referred to as the 'sensor') surrounding the area under investigation, which should be non-conducting. We measure all the inter-electrode capacitances, which are a function of the sensor geometry (known) and the permittivity (or dielectric-constant) distribution inside the sensor (unknown). THE PROBLEM OF IMAGE RECONSTRUCTION IS TO DETERMINE THIS PERMITTIVITY DISTRIBUTION FROM THE MEASURED INTER-ELECTRODE CAPACITANCES. This, of course, will give us information about the distribution of materials inside the sensor. Image reconstruction involves complex mathematical procedures and belongs to the category of INVERSE PROBLEMS. ECT is an active and challenging field of research and has potential industrial application to multiphase flow visualisation and measurement. One of the greatest challenges in this particular application is to perform the real-time inversion of the capacitance measurements (i.e. real-time image reconstruction) with sufficient accuracy. The ideal candidate must hold a PhD in a relevant area and should have a strong working knowledge of the following subjects (preferably applied to electromagnetic problems): - Numerical analysis, modelling and simulation. - Inverse problems and regularisation. - Finite element methods. - Computer programming skills using C and/or C++ and/or Fortran. - Parallel processing techniques. The successful candidate will become the fourth member of a newly formed team working on the four-year research project 'Multiphase Flow Measurement Using Tomographic Methods'. The opportunity exists to start working immediately both as an employee or as a visiting researcher (say on a sabbatical). Applicants should contact: Dr. Carlos Gamio Instituto Mexicano del Petroleo (Mexican Petroleum Institute) Eje Central L Cardenas Nte #152 Mexico, D.F., CP07730 Tel (+52 5) 333-7593 Fax (+52 5) 567-5476 email: jgamio@imp.mx ----------------------------- From: Bill Broadley Subject: UC Davis Mathematics Tenure Positions available Date: Mon, 9 Oct 2000 The Department of Mathematics at the University of California, Davis, is soliciting applications for a tenure-track/tenured position starting July 1, 2001. This position and appointment is contingent upon budgetary and administrative approval. Appointment of the tenure-track/tenured position will be made commensurate with qualifications. It will normally be made at the level of Assistant Professor, but exceptional candidates will be considered for Associate Professorship with tenure. The Department of Mathematics plans to fill the tenure-track/tenured position in the area of Applied Mathematics/Scientific Computation. However, applications from exceptionally strong candidates with demonstrated excellence in the following areas are also considered: 1) Analysis and Partial Differential Equations; 2) Discrete Mathematics; 3) Geometry and Topology; and 4) Mathematical Physics. Minimum qualifications for this position include a Ph.D. degree in mathematical sciences and great promise in research and teaching. Duties include mathematical research, undergraduate and graduate teaching (4.0 quarter courses per year), and departmental and university service. Candidates for the Associate Professor position must have demonstrated outstanding attainment in research and teaching. The Department of Mathematics includes faculty, in both pure and applied mathematics, engaged in numerous areas of research and undergraduate and graduate instruction. The Department offers a full range of academic programs leading to the A.B., B.S., M.A., M.A.T., and Ph.D. degrees in Mathematics. The Graduate Group in Applied Mathematics, consisting of faculty from Mathematics and other disciplines, is also housed in the Department. The Graduate Group offers M.S. and Ph.D. degrees in Applied Mathematics. The Davis campus is the third largest of the nine University of California campuses. The City of Davis is located in Northern California's Central Valley, and lies within ninety minutes of the San Francisco Bay Area and the Sierra Nevada Mountains. Applications will be accepted until the positions are filled, but to receive full consideration, the application should be received by December 15, 2000. To initiate the application process, please request an application package by either sending an e-mail message to forms@math.ucdavis.edu, or, by writing to the Chair of Search Committee, Department of Mathematics, University of California, One Shields Avenue, Davis, CA 95616-8633. Our Application Form is identical to the AMS Standard Cover Sheet. Additional information on the Department may be found on the World Wide Web at http://math.ucdavis.edu/. The University of California, Davis, is an affirmative action/equal opportunity employer. The University undertakes affirmative action to assure equal employment opportunity for minorities and women, for persons with disabilities, and for special disabled veterans, Vietnam era veterans, and any other veterans who served on active duty during a war or in a campaign or expedition for which a campaign badge has been authorized. Submitted by: Bill Broadley Programmer/Analyst Mathematics, UC Davis ----------------------------- From: Bill Broadley Subject: UC Davis Mathematics Visiting Positions available Date: Mon, 9 Oct 2000 The Department of Mathematics at the University of California, Davis, is soliciting applications for a few Visiting Research Assistant Professor (VRAP) positions starting July 1, 2001. These positions and appointments are contingent upon budgetary and administrative approval. The VRAP positions are renewable for a total of three years with satisfactory performance in research and teaching. The VRAP applicants are required to have completed their Ph.D. by the time of their appointment, but no earlier than 1997. The Department is interested in applicants in 1) Analysis and Partial Differential Equations; 2) Applied Mathematics; 3) Discrete Mathematics; 4) Geometry and Topology; 5) Mathematical Physics; and 6) Numerical Analysis and Scientific Computation. The Department of Mathematics includes faculty, in both pure and applied mathematics, engaged in numerous areas of research and undergraduate and graduate instruction. The Department offers a full range of academic programs leading to the A.B., B.S., M.A., M.A.T., and Ph.D. degrees in Mathematics. The Graduate Group in Applied Mathematics, consisting of faculty from Mathematics and other disciplines, is also housed in the Department. The Graduate Group offers M.S. and Ph.D. degrees in Applied Mathematics. The Davis campus is the third largest of the nine University of California campuses. The City of Davis is located in Northern California's Central Valley, and lies within ninety minutes of the San Francisco Bay Area and the Sierra Nevada Mountains. Applications will be accepted until the positions are filled, but to receive full consideration, the application should be received by December 15, 2000. To initiate the application process, please request an application package by either sending an e-mail message to forms@math.ucdavis.edu, or, by writing to the Chair of Search Committee, Department of Mathematics, University of California, One Shields Avenue, Davis, CA 95616-8633. Our Application Form is identical to the AMS Standard Cover Sheet. Additional information on the Department may be found on the World Wide Web at http://math.ucdavis.edu/. The University of California, Davis, is an affirmative action/equal opportunity employer. The University undertakes affirmative action to assure equal employment opportunity for minorities and women, for persons with disabilities, and for special disabled veterans, Vietnam era veterans, and any other veterans who served on active duty during a war or in a campaign or expedition for which a campaign badge has been authorized. Submitted by: Bill Broadley Programmer/Analyst Mathematics, UC Davis ----------------------------- From: Secretary Support - Magrijn Subject: Contents, Journal MCSS Date: Thu, 12 Oct 2000 Mathematics of Control, Signals, and Systems 2000 Vol. 13, No. 3 Table of Contents Admissible observation operators for the right-shift semigroup J.R. Partington and G. Weiss Formal elimination for multidimensional systems and applications to control theory J.F. Pommaret and A. Quadrat Induced convolution operator norms of linear dynamical systems V. Chellaboina, W.M. Haddad, D.S. Bernstein and D.A. Wilson Balanced parametrizations of discrete-time stable SISO all-pass system B. Hanzon and R.L.M. Peeters 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 Jan H. van Schuppen (J.H.van.Schuppen@cwi.nl) ----------------------------- From: "Listowner" Subject: Contents of Journal "Numerical Algorithms 24 (2000) 4 " Date: Tue, 10 Oct 2000 Numerical Algorithms 2000 Volume 24, Number 4 Table of Contents Special issue on sparse matrices and differential equations Editors: P. Chartier and B.Philippe Preface P. Chartier and B. Philippe Parallel linear multigrid by agglomeration for the acceleration of 3D compressible flow calculations on unstructured meshes G. Carré and S. Lanteri A nonstandard multigrid method with flexible multiple semicoarsening for the numerical solution of the pressure equation in a Navier--Stokes solver Jean Piquet and Vasseur Xavier Wavelet preconditioning of the Stokes problem in $\psi--\omega$ formulation Pascal Joly and Roland Masson Parallel sparse linear algebra and application to structural mechanics David Goudin, Pascal Hénon, François Pellegrini, Pierre Ramet, Jean Roman and Jean-Jacques Pesqué Parallel constrained molecular dynamics Olivier Coulaud and Pierre-Eric Bernard ----------------------------- From: Hans Schneider Subject: LAA Contents, Volumes 317-318 Date: Wed, 6 Sep 2000 Linear Algebra and its Applications Sept. 2000 Vol. 317, Issue 1-3 Table of Contents Algebraic constructions of the minimal forbidden digraphs of strong sign nonsingular matrices J.-Y. Shao, Z.-X. Hu Normal forms of ''near similarity'' transformations and linear matrix equations A. Tovbis Nearly L-matrices and generalized row sign balanced matrices J.-Y. Shao, S.-G. Hwang Canonical matrices for linear matrix problems V.V. Sergeichuk Block ILU factorization preconditioners for a block-tridiagonal H-matrix S.W. Kim, J.H. Yun Numerical range of linear pencils P.J. Psarrakos Anti-triangular and anti-m-Hessenberg forms for Hermitian matrices and pencils C. Mehl State feedback in linear control theory S. Mondie, P. Zagalak, V. Kucera On the third largest eigenvalue of a graph B. Liu, Z. Bo Disproof of a conjecture on the existence of the path-recursive period for a connected graph X. Yong, S. Cao Elementary operators and orthogonality A. Turnsek A note on diagonally dominant matrices G. Dahl The exponential Vandermonde matrix J. Robbin, D. Salamon Modified Gauss-Seidel type methods and Jacobi type methods for Z-matrices W. Li, W. Sun *********************** Linear Algebra and its Applications October 2000 Vol. 318, Issue 1-3 Table of Contents Description of the sub-Markov kernel associated to generalized ultrametric matrices. An algorithmic approach C. Dellacherie, S. Martnez, J. San Martn A characterization of convex cones of matrices with constant regular inertia N. Cohen, I. Lewkowicz Moore-Penrose inverse of set inclusion matrices R.B. Bapat The algebraic properties of the generalized Pascal functional matrices associated with the exponential families X. Zhao, T. Wang The equivalence structure of descriptor representations of systems with possibly inconsistent initial conditions U. Baser, J.M. Schumacher On two questions about quaternion matrices L. Huang Complementary inequalities to inequalities of Jensen and Ando based on the Mond-Pecaric method J. Micic, J. Pecaric, Y. Seo Cartesian decompositions and Schatten norms R. Bhatia, F. Kittaneh Single elements of matrix incidence algebras W.E. Longstaff, O. Panaia Partial realization for singular systems in standard form S. Feldmann, G. Heinig Symmetric failures in symmetric control systems R. Tanaka, K. Murota A note on affine toric varieties E. Reyes, R.H. Villarreal, L. Zarate Weak crossed products and a generalisation of a result of Sarason M.R. Alaimia Systems of linear congruences with individual moduli D.C. Torney, J. Wang Solution of infinite linear systems by automatic adaptive iterations P. Favati, G. Lotti, O. Menchi, F. Romani NOTE: ContentsDirect, which is automatically generated, lists the first author of each paper and the corresponding author (if different). 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 608-271-8477 (Home FAX) Madison WI 53706 USA http://www.math.wisc.edu/~hans (URL) ------- end -------