E-LETTER on Systems, Control, and Signal Processing ISSUE No. 7: 29 Oct 1987 Editors: Bradley W. Dickinson Dept. of Electrical Engineering Princeton University Princeton, NJ 08544 bradley@princeton.edu Eduardo D. Sontag Dept. of Mathematics Rutgers University New Brunswick, NJ 08903 sontag@fermat.rutgers.edu Welcome to the seventh issue of the E-LETTER. We remind you that items for posting can be emailed to either of the editors. PLEASE SEND CONTRIBUTIONS, since the eletter can only be useful if everyone participates! Back issues of the newsletter can be requested from sontag@fermat.rutgers.edu. NOTE: if you are using an editor to read this mailing (for instance, gnuemacs running the rmail command,) and if at any point you wish to skip to the next article, you can accomplish this by searching for the string: *.* *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* CHANGES TO MAILING LIST The following are additions to the mailing list which was included with issue #2. An up-to-date copy of the complete list can be obtained from sontag@fermat.rutgers.edu. As usual, you may have to adjust the format depending on your mailer. Here we mix uucp, csnet, and arpanet formats. Corrected addresses prlb2!lln-cs!gevers (Michel Gevers) carla@uvm.csnet (Carla Schwartz) biemond@hdetud53.bitnet (Jan Biemond) francis@ecf.toronto.edu (Bruce Francis) delliott@note.nsf.gov (David Elliott) slemrod@eunice.mrc.wisc.edu (Marshall Slemrod) laub@hub.ucsb.edu (Alan Laub) cappello@hub.ucsb.edu (Peter Cappello) gersho@hub.ucsb.edu (Allen Gersho) grizzle@caen.engin.umich.edu (Jessy Grizzle) New Addresses ravi@capricorn.ctr.columbia.edu (Ravi Mazumbar) dancho@pucc.bitnet (Dan Cho) kmease@pucc.bitnet (Kenneth Mease) smittnik@sbccvm.bitnet (Stefan Mittnik) efwood@pucc.bitnet (Eric Wood) igkevrek@pucc.bitnet (Ioannis Kevrekidis) delosme@yale.edu (Jean-Marc Delosme) wkc@michael.harvard.edu (Wei-on Chen) klein%jplmad.span@vlsi.jpl.nasa.gov (Jeffrey Klein) cansever@ecs.umass.edu (Derya Cansever) allegra!homxb!hlevy (Hanoch Levy) kung@ivy.princeton.edu (S.Y. Kung) ieie33@vtvm1.bitnet (Stanley C. Tang) cmkeller@vaxe.coe.northeastern.edu (Catherine Keller) MMDygas@ucdavis.bitnet (Malgorzata M. Klosek-Dygas) allegra!vax135!mk (Mark Karol) allegra!vax135!sailesh (Sailesh Rao) ywu%nrl.decnet@nrl3.arpa (Y. Wu) b473alb@utarlvm1.bitnet (Ann L. Blackwell) tony@eneevax.umd.edu (Anthony Ephremides) evagelos@eneevax.umd.edu (Evaggelos Geraniotis) stark@eecs.umich.edu (Wayne Stark) jfr@eecs.umich.edu (Jim Freudenberg) fjb@eecs.umich.edu (Fred Beutler) david_neuhoff@um.cc.umich.edu (David Neuhoff) hero@eecs.umich.edu (Al Hero) hvs@rice.edu (Henrik Sorensen) emad@eneevax.umd.edu (Fawzi Emad) wsl@eneevax.umd.edu (William Levine) farvar@eneevax.umd.edu (Nariman Farvardin) longo@heard.stanford.edu (Maurizio Longo) willems@hgrrug5.bitnet (Jan Willems) bellcore!thumper!sbw (Steve Weinstein) cooley@ibm.com (Jim Cooley) rissanen@ibm.com (Jorma Rissanen) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: Peter Ramadge Subject: Conference announcement TWENTY SECOND ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS The Twenty Second Annual Conference on Information Sciences and Systems will be held in the Department of Electrical Engineering, Princeton University, Princeton, N.J., on March 16, 17, and 18, 1988. The Program Directors are Peter J. Ramadge and Sergio Verdu. Professor R. G. Gallager of the Massachusetts Institute of Technology will present a plenary lecture entitled: Energy-Limited Channels: Coding and Multiaccess CALL FOR PAPERS Papers presenting original research in the areas of communications, computers, control, and signal processing are solicited. Authors may submit either regular or short papers. Regular papers will be allotted thirty minutes for presentation and will be published (up to six pages) in the conference proceedings. Short papers will be allotted fifteen minutes for presentation and one page summaries will be published in the conference proceedings. Summaries of papers are to be submitted by January 15th, 1988, to CISS Department of Electrical Engineering Princeton University Princeton NJ 08544. Authors will be notified of acceptance by February 15th, 1988. A recital by Kathleen Battle, soprano, and James Levine, piano, will take place on Wednesday, March 16 at 8:00pm at the McCarter Theatre of Princeton University. Those Conference attendants interested in obtaining tickets should call (609)-683-8900. For further information please contact Diane Griffiths (609)-452-4630 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: Bruce A Francis Subject: Sci-Fi This is addressed to all systems theorists who read (or might be willing to read) science fiction. There's a new genre called "cyberpunk". It blends hardboiled detectives, computer systems, and genetic engineering. The movie Blade Runner is in this genre. The book I want to recommend is Neuromancer, by William Gibson. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: Kevin M. Buckley Subject: ASSP conference announcement IEEE ACOUSTICS, SPEECH, AND SIGNAL PROCESSING SOCIETY FOURTH WORKSHOP ON SPECTRUM ESTIMATION AND MODELING University of Minnesota Minneapolis, Minnesota August 3-5, 1988 CALL FOR PAPERS THE WORKSHOP This workshop is sponsored by the IEEE Acoustics, Speech, and Signal Processing Society, and hosted by the University of Minnesota. The workshop site, the Spring Hill Conference Center, is located in rural Minnesota, a 20 minute drive west of downtown Minneapolis and the University of Minnesota. This secluded lake-side setting is well suited for the workshop objective, which is to provide a dedicated forum and a comfortable environment in which researchers can propose and discuss recent developments in the area of Spectrum Estimation and Modeling. This facility offers on premise room, board, and recreation. Attendees will be encouraged to stay on the premise, and the registration fee will include room & board at the workshop site. The workshop will consist of plenary presentations and poster sessions. Attendance at the workshop will be by both invitation and application. In order to encourage a free and informal exchange of ideas, attendance will be limited. Preference will be given to active participants. For further information, contact the co-chairmen. TO SUBMIT A SUMMARY Prepare a summary of approximately 200 words. The summary must be of sufficient thoroughness to enable qualified reviewers to evaluate the proposed paper. Submit three copies of the summary to: Kevin M. Buckley: Co-Chairman Spect. Est. & Modeling Workshop Department of Elect. Engineering 123 Church St. S.E. University of Minnesota Minneapolis, MN 55455 USA SCHEDULE Submission of summary: To be received by 1 February 1988 Notification of acceptance: To be mailed out by 1 April 1988 Submission of photo-ready paper: To be received by 1 June 1988 SUGGESTED TOPICS Parametric Modeling and Spectrum Estimation Spatial Spectrum Estimation and Sensor Signal Processing Statistical Analysis of Spectrum and Parameter Estimators Detection of Signals Nonparametric Spectrum Estimation Higher Order Spectrum Estimation Multidimensional Spectrum Estimation CO-CHAIRMEN M. Kaveh (612)-625-7319 K. M. Buckley (612)-625-9055 Department of Elec. Engr. 123 Church St. S.E. University of Minnesota Minneapolis, MN 55455 TECHNICAL PROGRAM T. S. Durrani University of Strathclyde S. L. Marple Martin Marietta Aerospace L. L. Scharf University of Colorado A. Tewfik University of Minnesota D. W. Tufts University of Rhode Island FINANCE AND REGISTRATION J. Vollum Dept. of Professional Dev. 315 Pillsbury Dr. S.E. University of Minnesota Minneapolis, MN 55455 (612)-625-1534 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: Dr. Thomas Seidman (MATH) Subject: position available The UMBC Department of Mathematics and Statistics invites applications for tenure and tenure-track faculty positions in Applied Mathematics, beginning September 1, 1988. Candidates should have a Ph.D. and research and teaching experience commensurate with the position applied for. Faculty with strengths in Combinatorics, CONTROL and COMMUNICATION, Operations Research, Scientific Computing, and Applied Analysis are encouraged to apply. The department has a faculty of about 25 at present. Applications should be received at an early date, but no later than January 15, 1988. Send curriculum vitae, reprints and/or preprints, names of at least 3 referees, and a summary of current research activity to: James M. Greenberg, Chairman Department of Mathematics and Statistics, University of Maryland Baltimore County Catonsville, MD 21228. (For further information, write or telephone (301)-455-2405.) EQUAL OPPORTUNITY/AFFIRMATIVE ACTION EMPLOYER MINORITIES AND WOMEN ARE ENCOURAGED TO APPLY For further information, e-mail enquiries can also be addressed to: BITNET: seidman@umbc arpanet: seidman@umbc3 na.seidman@su-score *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: Paul Fuhrmann Subject: Special Issue call for papers LINEAR ALGEBRA AND ITS APPLICATIONS - SPECIAL ISSUE LINEAR SYSTEMS AND CONTROL In view of the success of the 1983 special issue on Linear Systems and Control we think the time is ripe for another issue which will also focus on those areas of Systems and Control Theory, Signal Processing and Numerical Algebra where methods of Linear Algebra are relevant. Note that we use Linear Algebra in the wide sense, thus topics which are linear algebraic in flavor but where analytic techniques are used, such as much of H-infinity theory, are not only acceptable but are solicited. Contributions are invited. Papers should meet the publications standards of Linear Algebra and Its Applications, and they will be refereed in the usual way. This announcement will be made public at some professional meetings, on the E-LETTER on Systems, Control and Signal Processing published by B. W. Dickinson and E. D. Sontag and the NA_NEWSLETTER published by C. Moler. This is done to meet the planned publication date. We are hoping to receive both papers describing significant new results and well written survey papers on a relevant topic within the outlines of the special issue. Appropriate areas include: Polynomial matrices, rational functions. Realization theory in its various forms (deterministic, partial, stochastic). Inverse scattering. Large scale or structured systems. Geometric methods. Control design methods. Model reduction. Stability and quadratic forms, Bezoutians. Hankel and Toeplitz operators and related operators. Recursive methods. Interpolation problems. Fast algorithms, Parallel algorithms. Factorization theory (coprime, inner outer, Wiener-Hopf). Parametrization problems in system theory. Structured eigenvalue problems. Decentralized control. The deadline for submission of papers is May 31, 1988, and the special issue is scheduled to appear in spring of 1989. Papers should be sent to any of the special editors of the issue: Professor P. A. Fuhrmann Department of Mathematics Ben Gurion University of the Negev Beer Sheva, Israel Professor H. Kimura Department of Mechanical Engineering for Computer-Controlled Machinery Faculty of Engineering Osaka University 2-1, Yamada-oka, Suita Osaka 565, JAPAN Professor J. C. Willems Department of Mathematics University of Groningen P.O.Box 800 Groningen, The Netherlands *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: LI%tamu.csnet@RELAY.CS.NET (Shiping Li) Subject: Texas Systems Day, Summary of activities ****************************************************** TEXAS SYSTEMS DAY ****************************************************** An one-day conference was held at Texas A&M University on October 22nd, 1987. Participants came from Lund Inst. of Tech. of Sweden, Rice University, Texas A&M University, Texas Tech. University and University of Texas at Austin. The program, organized by Shankar Bhattacharyya and Mohammed Dahleh, is summarized here, (1) ``Adaptive Control Systems'' Professor Karl Astrom Lund Institute of Technology, Sweden. (2) ``$l^1$ Optimal Control'' Professor J.B. Pearson Rice University, Houston (3) ``Input-output Maps and Impulse Responses'' Professor Irwin Sandberg University of Texas, Austin (4) ``Adaptive $l^1$ Control'' Professor Mohammed A. Dahleh Texas A&M University (5) ``Recursive Modeling,'' Professor A. Antoulas Rice University (6) ``H^{\infty}$-Control Theory: Survey of Recent Trends'' Professor Madan Verma University of Texas, Austin (7) ``Multiple Optimization Criteria in the Design of Feedback Controllers'' Professor J. L. Junkins Texas A&M University (8) ``Distributed Control of Networks and Related Large Scale Problems'' Professor Wei K. Tsai and Professor G.M. Huang Texas A&M University (9) ``Adaptive Stochastic Estimation of Markov Chains'' Professor Steve Marcus and Professor Ari Arapostathis University of Texas, Austin (10) ``Global Feedback Linearization of Nonlinear Systems'' Professor M.P. Dayawansa Texas Tech University, Lubbock *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* >From Tom Seidman, UMBC Subject: Abstracts of recent papers 1. EXACT CONTROLLABILITY FOR A FREE BOUNDARY PROBLEM FOR A ROBOT ARM We consider (only) longitudinal vibration of a flexible robot arm with a prismatic joint so the state is a triple: $[L,u,v]$ where $u,v$ are functions on the interval $[0,L]$ satisfying $u_t = v$ and the one- dimensionsional wave equation $u_{tt} = f(u_s)_s$ together with suitable boundary conditions at $s=0,L(t)$. The control is $L(\cdot)$. Given an initial and a terminal state (subject to $L^{\infty}$ bounds on $v, u_s$), there is a time $T$ and a suitable control $L(\cdot)$ on $[0,T]$. 2. SOME CONTROL-THEORETIC QUESTIONS FOR A FREE BOUNDARY PROBLEM Consider dissolution/growth of a crystal grain in a weak solution subject to nonlinear diffusion. Assuming radial symmetry, the motion of the crystal radius satisfies an ODE involving the solution concentration there. Control is either via the outer boundary condition or temperature. A number of problems are posed (e.g., existence of an optimal control and computation of the optimality condition) and some results noted with statement of some open problems. Much of the effort relates to well-posedness of the dynamics. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: Eduardo Sontag Subject: papers by Rutgers faculty Papers recently appeared or submitted by faculty and long-term visitors to Rutgers University Math Department. Please request (p)reprints directly from authors. Mailing address: Dept.of Mathematics, Rutgers University, New Brunswick, NJ 08903. B.Jakubczyk: ``Existence of global analytic realizations of nonlinear causal operators'', {\it Bull. Pol. Acad. Sci.}, 1987. B.Jakubczyk: ``Existence of Hamiltonian realizations of nonlinear causal operators'', {\it Bull. Pol. Acad. Sci.}, 1987. B.Jakubczyk: ``Poisson structures and relations on vector fields and their Hamiltonians'', {\it Bull. Pol. Acad. Sci.}, 1987. B.Jakubczyk: ``Feedback linearization of discrete-time systems, {\it Systems & Control Letters}, to appear. B.Jakubczyk and K. Tchon: ``Singularities and normal forms of observed dynamics'', submitted to {\it Mathematics of Control, Signals, and Systems}. B.Jakubczyk and E.Sontag: ``The effect of sampling on feedback linearization,'' to appear in {\it Proc. IEEE Conf. Decision and Control, Los Angeles, Dec.1987}. B.Jakubczyk and E.Sontag: ``Controllability of nonlinear discrete-time systems: A Lie-algebraic approach,'' to be submitted. E.Sontag: ``Review of {\it Multidimensional Systems Theory},'' {\it Linear Alg.~and Applications}, {\bf 87}(1987): 273-278. E.Sontag: ``Comments on 'Some results on pole-placement and reachability','' {\it Systems and Control Letters} {\bf 8}(1986): 79-85. E.Sontag: ``Continuous stabilizers and high-gain feedback,'' {\it IMA Journal of Mathematical Control and Information}, {\bf 3}(1986): 237-253. E.Sontag: ``Equilinearization: A simplified derivation and experimental results,'' {\it Proc. Conf. Info. Sciences and Systems}, Johns Hopkins University Press, 1987. E.Sontag: ``Orbit theorems and sampling,'' in {\it Algebraic And Geometric Methods in Nonlinear Control Theory}, M.Fliess and M.Hazewinkel (Eds.), Reidel, Dordrecht, 1986, pp. 441-486. E.Sontag: ``Finite dimensional open-loop control generators for nonlinear systems,'' to appear in {\it Int.~J.~Control}. E.Sontag: ``Controllability and linearized regulation,'' {\it IEEE Trans. Automatic Control} {\bf 32}(1987): to appear. E.Sontag: ``A remark on bilinear systems and moduli spaces of instantons'', {\it Systems and Control Letters}, to appear. E.Sontag: ``Controllability is harder to decide than accessibility,'' submitted. E.Sontag: ``A Chow property for sampled bilinear systems,'' submitted to Proceedings of the {\it Conference on Mathematical Theory of Networks and Systems}, Tempe, June 1987. E.Sontag: ``An explicit construction of the equilinearization controller'', submitted to Proceedings of the {\it Conference on Mathematical Theory of Networks and Systems}, Tempe, June 1987. E.Sontag: ``An approach to the automatic design of first-order controllers along reference trajectories,'' to appear {\it Proc. IEEE Conf. Decision and Control, Los Angeles, Dec.1987}. H.Sussmann: ``Robust nonlinear filtering for the cubic sensor and other problems with unbounded coefficients'', Stochastics, to appear. H.Sussmann: ``A general theorem on local controllability'', {\it SIAM J. Control and Optimization}, Vol. 25, No. 1 (1987), pp. 158-194. H.Sussmann: ``The structure of time-optimal trajectories for single-input systems in the plane: the C-infinity nonsingular case'', {\it SIAM J. Control and Optimization}, to appear. H.Sussmann: ``The structure of time-optimal trajectories for single-input systems in the plane: the general real-analytic case'', {\it SIAM J. Control and Optimization}, to appear. H.Sussmann: ``Regular synthesis for time-optimal control of single-input real-analytic systems in the plane'', {\it SIAM J. Control and Optimization}, to appear. H.Sussmann: ``Small-time local controllability and continuity of the optimal time function for linear systems'', J. Optim. Theory and Applications, to appear. H.Sussmann: ``A product expansion for the Chen series'', in {\it Theory and Applications of Nonlinear Control Systems}, C. Byrnes and A. Lindquis, eds., North-Holland, 1986, pp. 323-335. H.Sussmann: ``Envelopes, conjugate points and optimal bang-bang extremals'', in in {\it Algebraic And Geometric Methods in Nonlinear Control Theory}, M.Fliess and M.Hazewinkel (Eds.), Reidel, Dordrecht, 1986. H.Sussmann and H.Schettler: ``On the regularity of optimal controls'', to appear in the {\it Journal of Applied Mathematics and Physics (ZAMP)}, special issue dedicated to H. W. Knobloch. H.Sussmann: ``A weak regularity theorem for real analytic optimal control problems'', to appear in {\it Revista Matem@K{aa}tica Iberoamericana}. H.Sussmann: ``Recent developments in the regularity theory of optimal trajectories'', to appear in the {\it Proceedings of the conference on "Linear and Nonlinear Mathematcal Control Theory"} held in Torino, Italy, June 1986. H.Sussmann: ``Trajectory regularity and real analyticity: some recent results'', in {\it Proceedings of the 25th IEEE Conference on Decision and Control}, Athens, Greece, Dec. 1986, pp. 592-595. H.Sussmann: ``Exponential Lie series and the discretization of stochastic differential equations'', to appear in {\it Stochastic Differential Systems, Stochastic Control and Applications}, W. H. Fleming and P. L. Lions Eds., I.M.A. volumes in Mathematics and its Applications, No. 10, Springer-Verlag. H.Sussmann: ``Real analytic desingularization and subanalytic sets: an elementary approach'', submitted to {\it Transactions of the A.M.S.} H.Sussmann: ``Review of {\it Nonlinear Systems Theory}, by J. Casti. To appear in {\it SIAM Review}. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: wucs1!wuibc!dls@uunet.UU.NET (Don Snyder) Subject: monographs available Readers of the newsletter may find something of interest in the following monographs from our laboratory. D. L. Snyder RESEARCH MONOGRAPHS September 29, 1987 ELECTRONIC SYSTEMS AND SIGNALS RESEARCH LABORATORY DEPARTMENT OF ELECTRICAL ENGINEERING WASHINGTON UNIVERSITY ST. LOUIS, MISSOURI 63130 The following is a list of research monographs from the Electronic Systems and Signals Research Laboratory. Individual copies are available upon request from: Director Electronic Systems and Signals Research Laboratory Department of Electrical Engineering Campus Box 1127 Washington University One Brookings Drive St. Louis, Missouri 63130 ------------------------------------------------------------------------------- NUMBER AUTHOR AND TITLE ------------------------------------------------------------------------------- ESSRL-87-1 J. M. Ollinger and D. L. Snyder, "An Evaluation of an Improved Method for Computing Histograms in Dynamic Tracer Studies Using Positron Emission Tomography." Reprint from IEEE Transactions on Nuclear Science. ESSRL-87-2 D. L. Snyder, M. I. Miller, and S. Moore, "An Evaluation of the Use of Sieves for Producing Estimates of Radioactivity Distributions with the EM Algorithm for Positron Emission Tomography." Reprint from IEEE Transactions on Nuclear Science. ESSRL-87-3 S. Broadstone, "Ultrasonic Reflection Tomography: An Off-Line High Resolution System for Tissue Characterization." MSEE Thesis (159 pages, copy cost $15). ESSRL-87-4 R. C. Lewis, "Inverse Synthetic Aperture Radar Imaging," MSEE Thesis (64 pages, copy cost $6.50). ESSRL-87-5 H. A. Klotz, "Image Processing in Finite Fields with Applications to Radiology." DSc. EE Thesis (268 pages, copy cost $27). ESSRL-87-6 D. L. Snyder, "Delay-Doppler Radar Imaging: Semi-Annual Progress Report No. 2 for the Period 1 December 1986 to 30 May 1987." (102 pages, copy cost $10). ESSRL-87-7 D. L. Snyder and M. I. Miller, "Estimation Under Quantum-Limited Conditions." Summary paper, Proc. 1986 Optical Society of America Topical Meeting on Quantum-Limited Imaging. ESSRL-87-8 D. L. Snyder, H. J. Whitehouse, J. T. Wohlschlaeger, and R. C. Lewis, "A New Approach to Radar/Sonar Imaging." Reprint from 1986 Algorithms and Architectures Conference, Society of Photo-optical Instrumentation Engineers. ESSRL-87-9 M. I. Miller, D. L. Snyder, and M. Turmon, "Iterative Maximum-Likelihood Estimation of Toeplitz-Constrained Covariances." Reprint from Proc. 1987 Conf. on Information Science and Systems. ESSRL-87-10 D. L. Snyder and M. I. Miller, "The Use of Grenander's Sieves in Quantum- Limited Imaging." Reprint from IEEE Transactions on Nuclear Science. ESSRL-87-11 H. A. Klotz, Jr. and D. L. Snyder, "A Hardware Architecture Using Finite-Field Arithmetic for Computing Maximum-Likelihood Estimates in Emission Tomography." Preprint of paper in review. ESSRL-87-12 M. I. Miller and D. R. Fuhrmann, "An EM Algorithm for Direction-of-Arrival Estimation for Narrowband Signals in Noise." Reprint from Proc. 1987 SPIE Conference. ESSRL-87-13 M. I. Miller and D. R. Fuhrmann, "Maximum Likelihood Estimation of Directions of Arrivals of Multiple Narrowband Signals in Noise." Reprint from Proc. 1987 Conf. on Information Science and Systems. ESSRL-87-14 J. A. O'Sullivan, "Polynomial Approximation of Discrete Time Optimal Regulators," Reprint from Mathematical Theory of Networks and Systems, June 1987. ESSRL-87-15 S. K. Liu, "Efficient Computation of the EM Algorithm in Time-of-Flight Positron-Emission Tomography." MSEE Thesis (126 pages, copy cost $13). ESSRL-87-16 J. M. Ollinger, "Algorithms for Parameter Estimation in Dynamic Tracer Studies Using Positron-Emission Tomography." DSc. EE Thesis (299 pages, copy cost $30). ESSRL-87-17 B. Roysam, "A New Method for EM Autoradiography: Validation and Comparison to Crossfire Analysis." (67 pages, copy cost $6.50). ESSRL-87-18 M. I. Miller and D. L. Snyder, "The Role of Likelihood and Entropy in Incomplete-Data Problems: Applications to Estimating Point-Process Intensities and Toeplitz Constrained Covariances." Reprint from IEEE Proceedings. ESSRL-87-19 D. L. Snyder, J. A. O'Sullivan, and M. I. Miller, "An Estimation Theoretic Approach for Imaging Diffuse Radar Targets." Summary paper, Proc. 1987 SPIE Conference on Algorithms and Architectures. ESSRL-87-20 D. L. Snyder, J. A. O'Sullivan, and M. I. Miller, "The Use of Maximum-Likelihood Estimation for Forming Images of Diffuse Radar Targets from Delay-Doppler Data." Preprint of paper in review. ESSRL-87-21 D. L. Snyder, M. I. Miller, L. J. Thomas, Jr., and D. G. Politte, "Noise and Edge Artifacts in Maximum-Likelihood Reconstructions for Emission Tomography." Reprint from IEEE Transactions on Medical Imaging. ESSRL-87-22 P. Narayan and D. L. Snyder, "Signal Set Design for Band-Limited Memoryless Multiple-Access Channels with Soft Decision Demodulation." Reprint from IEEE Transactions on Information Theory. ESSRL-87-23 M. I. Miller, "Entropy, Markov Random Fields, and Constrained Optimization." Copy of seminar slides. ESSRL-87-24 S. Broadstone and R. M. Arthur, "Time-of-Flight Approximation for Medical Ultrasonic Imaging." Reprint from Acoustical Imaging. ESSRL-87-25 S. Broadstone and R. M. Arthur, "An Approach to Real-Time Reflection Tomography Using the Complete Dataset." Reprint from Proc. 1986 IEEE Ultrasonics Symposium. ESSRL-87-26 J. A. O'Sullivan, "Optimal Volterra Kernels for Nonlinear Controllers." Reprint from Proc. 1987 Conf. on Decision and Control. ESSRL-87-27 R. E. Morley, Jr., A. M. Engebretson, and J. G. Trotta, "A Multiprocessor Digital Signal Processing System for Real-Time Audio Applications." Reprint from IEEE Trans. on Acoust., Speech, and Sig. Proc. ESSRL-87-28 D. R. Fuhrmann, "Adaptive MUSIC." Reprint from 1987 SPIE Conference. ESSRL-87-29 D. R. Fuhrmann and M. I. Miller, "On the Existence of Positive Definite Maximum Likelihood Estimates of Structured Covariance Matrices." Proc. 1987 Conf. on Information Science and Systems. ESSRL-87-30 D. R. Fuhrmann, "An Algorithm for Subspace Computation, with Applications in Signal Processing." SIAM Proc. on Linear Algebra in Signals, Systems, and Control. ESSRL-87-31 D. R. Fuhrmann and M. I. Miller, "On the Existence of Positive Definite Maximum Likelihood Estimates of Structured Covariance Matrices." Preprint from IEEE Trans. on Information Theory. ESSRL-87-32 M. I. Miller and A. S. Greene, "Maximum-Likelihood Estimation for Nuclear Magnetic resonance Spectroscopy." ESSRL-87-33 R. C. Barrett, A. W. McCarthy, M. I. Miller, and R. E. Morley, "Gaussian Convolutions on a Massively Parallel Processor." Proc. 1987 Conf. on Information Science and Systems. ESSRL-87-34 M. Turmon and M. I. Miller, "Performance Evaluation of Maximum-Likelihood Estimates of Toeplitz Covariances Generated with the Expectation-Maximization Algorithm." Abstract. ESSRL-87-35 M. I. Miller and D. L. Snyder, "An Alternating Maximization of the Entropy/Likelihood Function for Image Reconstruction and Spectrum Estimation." Proc. SPIE Conference on Algorithms and Architectures. ESSRL-87-36 M. I. Miller, "Strategies for the Representation of Broadband Stimuli in the Discharge Patterns of Auditory-Nerve Fibers." Reprint from Auditory Frequency Selectivity. ESSRL-87-37 M. I. Miller, B. Roysam, J. E. Saffitz, K. B. Larson, D. Furhmann, and D. L. Snyder, "A New Method for the Analysis of Electron Microscopic Autoradiographs." Reprint from BioTechniques. ESSRL-87-38 M. I. Miller, "Application of Likelihood and Entropy for Toeplitz Constrained Covariance Estimation." ESSRL-87-39 M. I. Miller, B. Roysam, and J. A. Schrauner, "Quantum-Limited ML Imaging Using Good's Roughness Penalty: Implementation on a Massively Parallel Processor." Abstract. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* From: B. Dickinson and E. Sontag Subject: Invitation to a reception On behalf of Springer-Verlag, we would like to invite those of you who will be attending the 26th Conference on Decision and Control, Dec. 9-11 in Los Angeles, to a reception on Wednesday evening, December 9. This event will honor the inauguration of the new journal, Mathematics of Control, Signals, and Systems, and will provide an opportunity to meet the members of its Editorial Board and the representatives of Springer-Verlag. Information about the place and time of the reception will be provided in an invitation to be included in each CDC registration packet. We look forward to seeing all of you at this event! *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* >From the ELETTER Editors: Subject: Other Conference and Workshop Announcements 1988 International Symposium on Information Theory, June 19-24, 1988, Kobe, Japan. Papers presenting new results in the following areas are solicited: Audio and visual signal processing, Communication systems, Complexity, Cryptography and security, Data networks, Detection and estimation, Distributed information processing, Error-correcting coding, Information theory applications, Multi-user information theory, Pattern recognition, Shannon theory, Stochastic processes, Source coding. Deadline for Long Papers, reviewed on the basis of a complete manuscript, was November 1, 1987. Short Papers will be reviewed on the basis of a 500-word summary; deadline for submission of Short Papers is December 1, 1987. Submissions should be accompanied by an Abstract of no more than 180 words suitable for the Symposium Proceeding, and an indication of the technical area covered. Acceptance will be by March 15, 1988. Submissions should be in triplicate to Professor Shu Lin, Dept. of Electrical Engineering, Univ. of Hawaii at Manoa, Holmes Hall 483, 2540 Dole Street, Honolulu, Hawaii 96822 or to Professor Suguru Arimoto, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan. International Conference on Systolic Arrays, May 25-27, 1988, San Diego, CA. The scope of the conference includes, but is not limited to, the following aspects of systolic and array processor algorithms, architectures, implementations, and applications: Algorithms/Mapping Methodology, Array Processor Architecture/Software, System Design Issues, Application Understanding. For more information, contact Prof. S. Y. Kung, Program Chair, Dept. of Electrical Engineering, Princeton University, Princeton, NJ 08544; email: kung@princeton.edu. Prospective authors are invited to submit three copies of a summary of their proposed paper (no longer than five pages, including figures) by December 1, 1987. Notification of acceptance will be mailed by January 15, 1988. Full papers are due by March 1, 1988 for inclusion in the Conference Proceedings. Visual Communications and Image Processing III, Nov. 6-11, 1988, Cambridge, MA. This annual conference will address the state of the art and new developments in the area of digital image processing as related to visual communications. Scope includes: Digital Image Processing, Video Communications, Mathematical Morphology and Fractals, Digital Image Processing in Medicine, VLSI Implementation and System Architectures. Abstract due date: March 28, 1988. Manuscript due date: September 12, 1988. For further information contact SPIE Technical Program Committee/ Cambridge '88, P.O. Box 10, Bellingham, WA 98227-0010; Telephone (206)-676-3290; Telex 46-7053. Fourth IFAC Symposium on Computer-Aided Design in Control Systems, August 23-25, 1988, Beijing, China. Topics to be covered: methods and program packages, computer-aided analysis of control systems, expert systems, industrial applications. Abstract of 500 words (in English) must be received by November 15, 1987. Send to Fourth IFAC Symposium, Sino-American Tech, Inc., S.A.T. Conference Center, 312 Fifth Ave, 4th Flr., New York, NY 10001. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.* END OF NEWSLETTER, issue #7