Publications

1992
T. A. Edmunds and Bard, J. F., An Algorithm for the Mixed-Integer Nonlinear Bilevel Programming Problem. Annuals of Operations Research 34 149-162, 1992.
J. F. Bard, Dar-El, E., and Shtub, A., An Analytic Framework for Sequencing Mixed Model Assembly Lines. International Journal of Production Research 30(1), 1992, pp. 35–48.
J. W. Clark, Gazula, S., Gernoth, K. A., Hasenbein, J., Prater, J., and Bohr, H., “Collective computation of many-body properties by neural networks,” Recent Progress in Many-Body Theories, vol. 3, pp. 371-386, 1992.
J. F. Bard, A Comparison of the Analytic Hierarchy Process with Multiattribute Utility Theory: A Case Study. IIE Transactions 24(5), 1992, pp. 111–121.
Y. Shoham, Morrison, H. F., and Torres-Verdín, C., “Electromagnetic mapping of electrical conductivity beneath the Columbia basalt (Expanded Abstract): Eur,” European Assotiation Geoscientists & Engineers 54rd Annual International Meeting. European Assotiation. Geoscientists. & Engineers, Paris, France, 1992.
Y. Shoham, Morrison, H. F., and Torres-Verdín, C., “Electromagnetic mapping of electrical conductivity beneath the Columbia basalt (Expanded Abstract): Eur,” European Assotiation Geoscientists & Engineers 54rd Annual International Meeting. European Assotiation. Geoscientists. & Engineers, Paris, France, 1992.
Z. Zhang, Claros, G., and Hudson, W. R., “An Expert System for Diagnosis and Treatment of Flexible Pavement Distress,” 71st Annual Meeting of the Transportation Research Board. Washington, DC, 1992.
P. D. Condo, Sanchez, I. C., Panayiotou, C. G., and Johnston, K. P., “GLASS-TRANSITION BEHAVIOR INCLUDING RETROGRADE VITRIFICATION OF POLYMERS WITH COMPRESSED FLUID DILUENTS,” Macromolecules, vol. 25, pp. 6119-6127, 1992. Publisher's VersionAbstract
A model is presented to predict the depression of the glass transition temperature of a polymer in the presence of a liquid, gas, or supercritical fluid as a function of pressure. It is developed using lattice fluid theory and the Gibbs-Di Marzio criterion, which states that the entropy is zero at the glass transition. Four fundamental types of T(g) versus pressure behavior are identified and interpreted as a function of three factors: the solubility of the compressed fluid in the polymer, the flexibility of the polymer molecule, and the critical temperature of the pure fluid. A new phenomenon is predicted where a liquid to glass transition occurs with increasing temperature, which we define as retrograde vitrification. This retrograde behavior is a consequence of the complex effects of temperature and pressure on sorption. For the limited data which are available for the polystyrene-CO2 and poly(methyl methacrylate)-CO2 SYStems, the predictions of the model are in good agreement with experiment.
C. Torres-Verdín and Bostick Jr, F. X., “Implications of the Born approximation for the magnetotelluric problem in three-dimensional environment,” Geophysics, vol. 57, pp. 587–602, 1992.
C. Torres-Verdín and Bostick Jr, F. X., “Implications of the Born approximation for the magnetotelluric problem in three-dimensional environment,” Geophysics, vol. 57, pp. 587–602, 1992.
J. R. Combes, Johnston, K. P., Oshea, K. E., and Fox, M. A., “INFLUENCE OF SOLVENT SOLUTE AND SOLUTE SOLUTE CLUSTERING ON CHEMICAL-REACTIONS IN SUPERCRITICAL FLUIDS,” Acs Symposium Series, vol. 488, pp. 31-47, 1992. Publisher's VersionAbstract
In a highly compressible supercritical fluid(SCF), local densities of the solvent and solute about a solute molecule are augmented over bulk values. The influence of this solvent-solute clustering on reactions is examined based on the photolysis of 1,3-diphenylacetone and a new interpretation of the photolysis of iodine. Together these studies indicate that solvent-solute clustering causes the solvent cage effect to be larger than expected based on bulk properties, but smaller than in liquid solvents. New experimental results indicate that the rate of cyclohexenone photodimerization and the regioselectivity to the more polar head-to-head versus the less polar head-to-tail dimer increase sharply as pressure is decreased to the critical point. This unusual result is attributed to solute-solute clustering, which increases the local polarity and the number of encounters between reacting species. Solute-solute clustering is shown to occur in a single phase region, where volume fluctuations are large, just prior to the onset of nucleation and growth of a condensed phase.
J. R. Combes, Johnston, K. P., Oshea, K. E., and Fox, M. A., INFLUENCE OF SOLVENT SOLUTE AND SOLUTE SOLUTE CLUSTERING ON CHEMICAL-REACTIONS IN SUPERCRITICAL FLUIDS, vol. 488. 1992, pp. 31-47. Publisher's VersionAbstract
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P. Phelps, Agarwal, S., Speitel Jr, G. E., and Georgiou, G., “Methylosinus trichosporium OB3b Mutants Having Constitutive Expression of Soluble Methane Monooxygenase in the Presence and Absence of High Levels of Copper,” Applied and Environmental Microbiology, vol. 58, no. 11, pp. 3701-3708, 1992.
C. Torres-Verdín and Bostick Jr, F. X., “Principles of spatial surface electric field filtering in magnetotellurics: Electromagnetic Array Profiling (EMAP),” Geophysics, vol. 57, pp. 603–622, 1992.
C. Torres-Verdín and Bostick Jr, F. X., “Principles of spatial surface electric field filtering in magnetotellurics: Electromagnetic Array Profiling (EMAP),” Geophysics, vol. 57, pp. 603–622, 1992.
Y. P. Sun, Bennett, G., Johnston, K. P., and Fox, M. A., “QUANTITATIVE RESOLUTION OF DUAL FLUORESCENCE-SPECTRA IN MOLECULES FORMING TWISTED INTRAMOLECULAR CHARGE-TRANSFER STATES - TOWARD ESTABLISHMENT OF MOLECULAR PROBES FOR MEDIUM EFFECTS IN SUPERCRITICAL FLUIDS AND MIXTURES,” Analytical Chemistry, vol. 64, pp. 1763-1768, 1992. Publisher's VersionAbstract
A thermodynamic equilibrium between the locally excited state and the twisted intramolecular charge-transfer (TICT) state in p-(dimethylamino)benzonitrile and ethyl p-(dimethylamino)benzoate is used to probe unusual solute-solvent interactions in supercritical trifluoromethane and carbon dioxide mixtures. Well-defined locally excited state fluorescence spectra of the two molecules are obtained through application of principal component analysis. Quantitative resolution of dual fluorescence spectra of the locally excited state and the TICT state is accomplished by using a combination of nonlinear least-squares fitting and principal component analysis-self-modeling, in which a new self-modeling constraint is introduced.
S. B. Graves, Ringuest, J. L., and Bard, J. F., Recent Developments in Screening Methods for Nondominated Solutions in Multiobjective Optimization. Computers & Operations Research 19(7), 1992, pp. 683–694.
R. B. Machemehl and Ward, W. V., “Regional Arterial (Super Street) Concepts,” Transportation Research Record, 1992.Abstract
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P. D. Condo and Johnston, K. P., “RETROGRADE VITRIFICATION OF POLYMERS WITH COMPRESSED FLUID DILUENTS - EXPERIMENTAL CONFIRMATION,” Macromolecules, vol. 25, pp. 6730-6732, 1992. Publisher's VersionAbstract
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G. E. Speitel Jr and Leonard, J. M., “A Sequencing Biofilm Reactor for the Treatment of Chlorinated Solvents Using Methanotrophs,” Water Environment Research, vol. 64, no. 5, pp. 712-719, 1992.

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