Lyle H. Ungar's Chemical Engineering Publications

Chemical Engineering

Colton, C.K. and L.H. Ungar, A Model of an Artificial Pancreas: Transient Diffusion in a Two Phase Composite with a Glucose Dependent Insulin Source at the Interface, Proceedings of the N.E. Bioengineering Conf. 547-522 (1980).

Ungar, L.H. and R.A. Brown, The Dependence of the Shape and Stability of Captive Rotating Drops on Multiple Parameters, Phil. Trans. R. Soc. Lond. A306, 347-370 (1982).

Ungar, L.H. and R.A. Brown, Cellular Interface Morphologies in Directional Solidification: I. The One-Sided Model, Physical Review B 29, 1367-1380 (1984).

Ungar, L.H. and R.A. Brown, Cellular Interface Morphologies in Directional Solidification: II. The Effect of Grain Boundaries, Physical Review B 30, 3993-3999 (1984).

Brown, R.A., L.H. Ungar and P.M. Adornato, Convection, Segregation and Interface Morphology in Directional Solidification, in Modeling of Patterns in Space and Time ed. W. Jaeger, Springer Verlag, 1984.

Brown, R.A. and L.H. Ungar, Pattern Formation in Directional Solidification: The Nonlinear Evolution of Cellular Melt/Solid Interfaces, Aachen Workshop on Microgravity and Directional Solidification Ed. P. Sahm, (1984).

Lauffenburger, D., E. Dussan V. and L. Ungar, Applied Mathematics in Chemical Engineering, Chemical Engineering Education Fall, 160-163 and 214-215 (1984).

Ungar, L.H., M.J. Bennett and R.A. Brown, Cellular Morphologies in Directional Solidification: III. The Effects of Heat Transfer and Solid Diffusivity, Physical Review B 31, 5923-5930 (1985).

Ungar, L.H. and R.A. Brown, Cellular Morphologies in Directional Solidification: IV. The Formation of Deep Cells, Physical Review B 31, 5931-5940 (1985).

Kelly, F.X. and L.H. Ungar, Steady and Oscillatory Pattern Formation in Rapid Solidification, Physical Review B 34, 1746-1753 (1986).

Tzouanas, V., L.H. Ungar and C. Georgakis, Towards an Expert Multivariable Controller, IFAC Proceedings (1987).

Bennett, M.J., R.A. Brown and L.H. Ungar, ``Nonlinear Interactions of Interface Structures at Differing Wavelength in Directional Solidification,'' The Physics of Structure Formation Springer Verlag, ed. W. Guttinger and G. Dangelmeyer, p. 180-190 (1987).

Ungar, L.H., Expert Systems for Engineering Design and Manufacturing, Proceedings of the Fifth National Conference on University Programs in Computer-Aided Engineering, Design, and Manufacturing 114-117 (1987).

Seider, W.D. and L.H. Ungar, Nonlinear Systems in Chemical Engineering, Chemical Engineering Education 21(4), 178-183 (1987).

Durand, P.P. and L.H. Ungar, Application of the Boundary Element Method to Dense Dispersions, Int. J. Numer. Methods in Engr. 26, 2487-2501 (1988).

Durand, P.P. and L.H. Ungar, Percolation and Transport in an Assembly of Anisotropic Conductors, Physical Review A 26, 2487-2501 (1988).

Tzouanas, V., C. Georgakis, W. L. Luyben and L.H. Ungar, Expert Multivariable Control, Computers and Chem. Eng. 12(9/10), 1065-1074 (1988).

Ungar, L.H., N. Ramprasad and R.A. Brown, Finite Element Methods for Unsteady Solidification Problems Arising in Prediction of Morphological Structure, J. Scientific Computing 3(1), 77-108 (1988).

Grantham, S. and L.H. Ungar, ``Qualitative Physics,'' in A Sourcebook on Formal Techniques in Artificial Intelligence ed. R. Banerji, Elsevier Press, 77-121 (1990).

Ungar, L.H. and V. Venkatasubramanian, Advanced Knowledge Representation: CACHE Monograph on Artificial Intelligence for Chemical Engineering, AIChE (1990).

Ungar, L.H., ``A Bioreactor Benchmark for Adaptive Network-based Control'' in Proceedings of the 1988 NSF Workshop on Neural Networks for Robotics MIT Press (1990).

Kelly, F.X. and L.H. Ungar, A Molecular Dynamics Investigation of Solute Trapping During Rapid Solidification of Silicon, J. Crystal Growth 102, 658-666 (1990).

Ungar, L.H., S.N. Kamens and B. Powell, Adaptive Networks for Fault Diagnosis and Process Control, Computers and Chem. Eng. 14, 561-572 (1990).

Weinstein, S.J., E.B. Dussan V. and L.H. Ungar, A Theoretical Study of Two- Phase Flow through a Narrow Gap with a Moving Contact Line: Viscous Fingering in a Hele-Shaw Cell, J. Fluid. Mech. 221, 53-76 (1990).

Luyben, W. L., V. Tzouanas, C. Georgakis and L.H. Ungar, Expert Multivariable Control: Part I - Structure and Design Methodology, I & EC Research 29, 382-388 (1990).

Luyben, W. L., V. Tzouanas, C. Georgakis and L.H. Ungar, Expert Multivariable Control: Part 2 - Application of Two-Product Distillation Columns, I & EC Research 29, 389-403 (1990).

Luyben, W. L., V. Tzouanas, C. Georgakis and L.H. Ungar, Expert Multivariable Control: Part 3 - Extension of EMC to Three-Product Sidestream Distillation Columns, I & EC Research 29, 403-415 (1990).

Durand, P.P. and L.H. Ungar, Prediction of Decoupling in High Temperature Superconductors, Phys. Rev. B 41(1), 815-818 (1990).

Grantham, S. D. and L.H. Ungar, A First Principles Approach to Automated Troubleshooting of Chemical Plants, Computers and Chem. Engr. 14(7), 783-798 (1990).

Grantham, S. D. and L. H. Ungar, Comparative Analysis of Qualitative Models when the Model Changes, AIChE Journal 37(6), 931-943 (1991).

Psichogios, D.C. and L.H. Ungar, Nonlinear Internal Model Control Using Neural Networks, Proceedings of the Sixth Yale Workshop on Adaptive and Learning Systems, Yale, August 1990.

Psichogios, D.C. and L.H. Ungar, Nonlinear Internal Model Control Using Neural Networks, Proceedings of the IEEE Fifth Int'l. Symposium on Intelligent Control, September 1990.

Catino, C.A., S.D. Grantham, and L.H. Ungar, Automatic Generation of Qualitative Models of Chemical Process Units, Computers and Chem. Engr. 15(8) 583-599 (1991).

Psichogios, D.C., and L.H. Ungar, Direct and Indirect Model Based Control Using Artificial Neural Networks, I & EC Res. 30, 2564-2573 (1991).

Vinson, J.M., S.D. Grantham and L.H. Ungar, Automatic Rebuilding of Qualitative Models for Diagnosis, IEEE Expert, 23--30 August (1992).

Foster, B., F. Collopy and L.H. Ungar, Neural Network Forecasting of Short Noisy Time Series, Computers and Chem. Engr., 16(4) 293-298 (1992).

Leonard, J.A., M.A. Kramer, and L.H. Ungar, A Neural Network Architecture that Computes its own Reliability, Computers and Chem. Engr., 16(9) 819--837, (1992).

Leonard, J.A., M.A. Kramer and L.H. Ungar, Using Radial Basis Functions to Approximate a Function and Its Error Bounds, IEEE Transactions on Neural Networks, 3(4) 624-627 (1992).

Psichogios, D.C. and L.H. Ungar, A Hybrid Neural Network - First Principles Approach to Process Modeling, AIChE Journal, 1499--1512, October (1992).

Psichogios, D.C., R.D. DeVeaux, and L.H. Ungar, Nonparametric System Identification: A Comparison of MARS and Neural Networks, Proceedings of the ACC 1436-1440 (1992).

Psichogios, D.C., and L.H. Ungar, Process Modeling Using Structured Neural Networks, Proceedings of the ACC 1917-1921 (1992).

Vinson, J.M. and L.H. Ungar, Fault Detection and Diagnosis using Qualitative Modelling and Interpretation, in On-line Fault Detection and Supervision in the Chemical Process Industries Preprints of the IFAC Symposium, Newark, Delaware, USA April 22-24, 1992, Ed. P.S. Dhurjati, pp. 81-86 (1992).

Foster, W.R., J.F.R. Paton, J.J. Hopfield, L.H. Ungar and J.S. Schwaber, Matching Neural Models to Experiment, Proceedings of Computation and Neural Systems Meeting, San Francisco, 1992.

Ungar, L.H., J.S. Schwaber and W.R. Foster, Neural Control and Adaptation in Blood Pressure Control, Proceedings of the Yale Workshop on Adaptive and Learning Systems, 111-115, 1992.

DeVeaux, R.D., D.C. Psichogios and L.H. Ungar, A Tale of Two Nonparametric Estimation Schemes: MARS and Neural Networks, 4th Intl. Conf. on Artificial Intelligence and Statistics, Jan. 1993.

DeVeaux, R.D., D.C. Psichogios, and L.H. Ungar, A Comparison of Two Nonparametric Estimation Schemes: MARS and Neural Networks, Computers and Chem. Engr., 17(8), 819--837 (1993).

Vinson, J.M. and L.H. Ungar, QMIMIC: Model-based Monitoring and Diagnosis, Proceedings of the ACC 1880--1884 (1993).

Foster, W.R., L.H. Ungar and J.S. Schwaber, Significance of conductances in Hodgkin-Huxley models, Journal of Neurophysiology, 70(6) 2502--2518 (1993).

Vinson, J.M. and L.H. Ungar, The Automatic Process Evaluator, Proceedings of the Second Intl. Conf. on FOCAPO, ed. Rippin et al., CACHE, 443-449, 1993.

Gazi, E., W.D. Seider, and L.H. Ungar, Control of Nonlinear Processes using Qualitative Reasoning, Proceedings of 1993 ESCAPE in Computers and Chem. Engr., 18, S189--S193 (1994).

Psichogios, D.C. and L.H. Ungar, SVD-Net: An Algorithm which Automatically Selects Network Structure, IEEE Transactions on Neural Networks, 5(3) 513-515, 1994.

Ungar, L.H., T. Johnson and R.D. DeVeaux, Radial Basis Function Neural Networks for Process Control, Computer-Integrated Manufacturing in the PROcess industries (CIMPRO) Proceedings, 357-364, 1994.

Vinson, J.M. and L.H. Ungar, Dynamic Fault Detection with the Automatic Process Evaluator, CIMPRO Proceedings, 295-301, 1994.

Carden, S.R., L.H. Ungar, W.C. Rose, and J.S. Schwaber, The Role of Baroreceptor Resetting in Habituating Control of Blood Pressure,Proceedings of the ACC, 87-91, 1994.

Eaton, J.W., J.B. Rawlings, and L.H. Ungar, Stability of Neural Net Based Model Predictive Control, Proceedings of the ACC, 2481-85, 1994.

Gazi, E., L.H. Ungar, and W.D. Seider, Controller Verification Using Qualitative Reasoning, ADCHEM Proceedings, 1994.

Gazi, E., W.D. Seider and L.H. Ungar, Control of Nonlinear Processes Using Qualitative Reasoning, Proceedings of ESCAPE 3, 1994.

Salganicoff, M., L.G. Kunin and L.H.Ungar, Active Exploration-Based ID-3 Learning for Robot Grasping, Proceedings of the Workshop on Robot Learning, 11th Intl Conf. on Machine Learning, July, 1994.

R.D. DeVeaux, L.H. Ungar, and J.M. Vinson, Statistical Approaches to Fault Analysis in Multivariate Process Control Proceedings of the ACC, 1994.

R.D. DeVeaux, L.H. Ungar, D.J. Darken, Comment on ``Neural Networks and Related Methods for Classification'' Journal of the Royal Statistical Society, Series B, 56(3), 446-447. 1994.

Catino, C.A. and L.H. Ungar, A Model-Based Approach to Automated Hazard Identification of Chemical Plants, Computers and Chem. Engr., 41(1), 97-109, 1995.

Vinson, J.M. and L.H. Ungar, Dynamic Process Monitoring and Fault Diagnosis with Qualitative Models, IEEE Transactions on Man, Machines and Cybernetics, 25(1), 181-189, 1995.

Ungar, L.H., Forecasting, in The Handbook of Brain Theory and Neural Networks, ed. M.A. Arbib, MIT Press, 399-403, 1995.

Ungar, L.H., Process Control, in The Handbook of Brain Theory and Neural Networks, ed. M.A. Arbib, MIT Press, 760-764, 1995.

Salganicoff, M. and L.H. Ungar, Active Exploration and Learning in Real-Valued Spaces using Multi-Armed Bandit Allocation Indices, Proc. 12th Intl. Conf. on Machine Learning, July, 1995.

Ungar, L.H. and R.D. DeVeaux, A Statistical Basis for Using Radial Basis Functions for Process Control, Proceedings of the ACC, 1995.

Ungar, L.H. E.D. Hartman J.D. Keeler and G.D Martin, Neural Networks for Process Control, Proc. Intelligent Systems in Process Engineering (ISPE '95), 1995.

Kuipers, B. and L.H. Ungar, Control of the physical world by intelligent agents: putting the pieces together. AI Magazine 16:7-8 Spring 1995.

Gazi, E., W.D. Seider and L.H. Ungar, Controller verification for polymerization reacators Proc. Intelligent Systems in Process Engineering (ISPE '95), 1995.

Salganicoff, M. L.H., Ungar, and R. Bajcsy Active Learning for Vision-Based Robot Grasping Machine Learning Journal, in press, 1996.

Ungar, L.H. and R.D. DeVeaux, A Brief Introduction to Neural Networks, American Statistician, submitted, 1995.

Gazi, E., W.D. Seider and L.H. Ungar, and B.J. Kuipers Automatic analysis of Monte-Carlo simulations of dynamic chemical plants, book chapter submitted to Intelligent Control ed. R. Shoureshi, 1995.

Gazi, E., L. H. Ungar, W. D. Seider, and B. J. Kuipers, Automatic Analysis of Monte-Carlo Simulations of Dynamic Chemical Plants, Proceedings of the ESCAPE 6 Symposium, Rhodes, Greece, May, Pergamon Press, 1996.

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ungar@cis.upenn.edu