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[143] Glenn Foster, Alfred W. Hubler, Karin Dahmen, “Resonant forcing of multi-dimensional chaotic map dynamics”, Physical Review E 75, 036212, 9 pages (2007) Abstract http://server10.how-why.com/papers/glenn_pre.pdf
[198] Nichols A. Romero, Jeongnim Kim, and Richard M. Martin, “Electronic structures and superconductivity of endohedrally doped C28 solids from first principles”, Physical Review B 76 (205405), 6 pages (2007) (Included in Virtual Journal of Nanoscale Science and Technology, November 19, 2007) 10.1103/PhysRevB.76.205405
[166] K. Sastry, D.D. Johnson, D. E. Goldberg, “Scalability of a hybrid extended compact genetic algorithm for ground state optimization of clusters.”, Materials and Manufacturing Processes 22, 570, 7 pages (2007) Abstract http://dx.doi.org/10.1080/10426910701319654
[167] K. Sastry, D.D. Johnson, A. L. Thompson, D. E. Goldberg, T. J. Martinez, J. Leiding, J. Owens, “Optimization of Semiempirical Quantum Chemistry Methods via Multiobjective Genetic Algorithms: Accurate Photochemistry for Larger Molecules and Longer Time Scales”, Materials and Manufacturing Processes 22, 9 pages (2007) Abstract http://dx.doi.org/10.1080/10426910701319506
[159] Jordan E. Vincent, Jeongnim Kim, and Richard M. Martin, “Quantum Monte Carlo calculations of the optical gaps of Ge nanoclusters using core-polarization potentials”, Physical Review B 75, 045302, 10 pages (2007) Abstract http://dx.doi.org/10.1103/PhysRevB.75.045302
[191] N. A. Zarkevich, Teck L. Tan, and D. D. Johnson, “First-principles prediction of phase-segregating alloy phase diagrams and a rapid design estimates of their transition temperatures”, Physical Review B 75, 104203-1-2 (2007) Abstract PDF http://dx.doi.org/10.1103/PhysRevB.75.104203
[149] Glenn Foster, Alfred W. Hubler, Karin Dahmen, “Resonance Spectroscopy with Chaotic Forcing Functions”, Physical Review E (2006) Abstract PDF
[145] Michael L. Parks, Eric de Sturler, Greg Mackey, Duane D. Johnson, and Spandan Maiti, “Recycling Krylov Subspaces for Sequences of Linear Systems”, SIAM Journal on Scientific Computing 28 (5), 1651-74, 24 pages (accepted 2006) Abstract PDF http://huygens.math.vt.edu/~sturler/Papers/SeqLinSys_FinalDraft.pdf
[138] K. Sastry, D.D. Johnson, A. L. Thompson, D. E. Goldberg, T. J. Martinez, J. Leiding, J. Owens, “Multiobjective Genetic Algorithms for Multiscaling Excited State Direct Dynamics in Photochemistry”, *Chosen as Best Paper in Track. *Won 2006 "Silver Humie" in Human Competitive Results Awards at Genetic and Evolutionary Computation Conference, Genetic and Evolutionary Computation Conference, 1745-52, 8 pages (2006) (Best paper award in Real World Applications track. Silver Humie award at the Human Competitive Results Competition) Abstract PDF
[105] J. Kim, P. Matagne, J.P. Leburton, R.M. Martin and S. Tarucha, “Engineering Quantum Confinement and Orbital Coupling in Laterally-Coupled Vertical Quantum Dots for Spintronic Applications”, IEEE Transactions on Nanotechnology (in press 2005) Abstract
[21] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “Genetic programming for multitimescale modeling”, Physical Review B 72, 085438-1-9 (2005) (*Chosen as focused article of frontier research in Virtual Journal of Nanoscale Science & Technology, Vol 12, Issue 9 (2005).) Abstract DOI download
[22] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “Genetic Programming for MultiScale Modeling”, International Journal of MultiScale Computational Engineering 2 (2), 239-56 (2005)
[76] Kumara Sastry, Hussein A. Abbass, David E. Goldberg, D. D. Johnson, “Sub-structural Niching in Estimation Distribution Algorithms”, Genetic and Evolutionary Computation Conference, 671-8 (2005) (*Nominated for best paper in the EDA track.) Abstract PDF
[15] R. Ravishankar, P. Matagne, J. P. Leburton and R. M. Martin, “Three-dimensional self-consistent simulations of symmetric and asymmetric laterally coupled vertical quantum dots”, Physical Review B 69, 035326 (2004)
[18] Nichols A. Romero, Jeongnim Kim and Richard M. Martin, “Electron-Phonon Interactions in C28-derived Molecular Solids”, Physical Review B 70, 140504, 4 pages (2004)
[49] J. P. Leburton, S. Nagaraja , P. Matagne and R. M. Martin, “Spintronics and exchange engineering in coupled quantum dots”, Microelectronics Journal 34, 485-9 (2003)
[26] Ruyi Yu, Eric de Sturler, D.D. Johnson and A.V. Smirnov, “A block GCROT method for Complex, non-Hermitian matrices: Application to Large-Scale Electronic-Structure Calculations” (2003) (CS Internal Report)
[43] P. Matagne, T. Wilkens, J.P. Leburton and R.M. Martin, “Hybrid LSDA/Diffusion Quantum Monte-Carlo Method for Spin Sequences in Vertical Quantum Dots”, Journal of Computational Electronics 1, 135 (2002)
[71] Reyi Yu, Eric de Sturler, Duane D. Johnson, “A Block Iterative Solver for Complex on-Hermitian Systems Applied to Large-Scale, Electronic-Structure Calculations” (2002) (Technical Report No. UIUCDCS-R-2002-2299) PS version
[132] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “"Genetic programming for multitimescale modeling,"”, *Chosen as focused article of frontier research in Virtual Journal of Nanoscale Science & Technology, Vol 12, Issue 9 (2005)., Physical Review B 72, 085438-1-9 Abstract http://dx.doi.org/10.1103/PhysRevB.72.113105
[292] Y.L. Loh, E.W. Carlson, and K.A. Dahmen, “Noise Predictions for STM in Systems with Local Electron Nematic Order”, Physical Review B (2009) (Submitted not published)
[200] Jean-Pierre Leburton, Jeanlex Soares De Sousa,Gil De Aquino Farias, Valder Nogueira Freire, “Memory Device” (2008) (Co-patent-author was an MCC-supported visitor) Abstract
[305] Y. Liu, Karin A. Dahmen, and A. Berger, “The role of dipolar interactions for the determination of intrinsic switching field distributions”, Applied Physics Letters 92, 222503 (2008) http://dx.doi.org/10.1063/1.2938695
[279] Y. Liu, Karin A. Dahmen, and A. Berger, “Comparative Study of the DeltaH(M, DeltaM) method reliability for square and triangular lattices”, Journal of Applied Physics 103 (07F504) (2008) (published) http://dx.doi.org/0.1063/1.2828810
[287] D.V. Melnikov, T. Fijisawa, D.G. Austing, S. Tarucha and J.P. Leburton, “Many-body excitations in the tunneling current spectra of a few-electron quantum dots”, Physical Review B 77, 165340 (2008) http://dx.doi.org/10.1103/PhysRevB.77.165340
[173] J. Bacardit, M. Stout, J.D. Hirst, K. Sastry, X. Llorà, N. Krasnogor, “Automated alphabet reduction method with evolutionary algorithms for protein structure prediction”, Genetic and Evolutionary Computation Conference, 346 (2007) Abstract http://doi.acm.org/10.1145/1276958.1277033
[158] M. V. Butz, D. E. Goldberg, P. L. Lanzi, K. Sastry, “Problem solution sustenance in XCS: Markov chain analysis of niche support distributions and the impact on computational complexity.”, Genetic and Evolutionary Computation Conference 8 (1), 5-37 (2007) Abstract PDF Springer link
[175] X. Llorà, K. Sastry, T.-L. Yu, D. E. Goldberg, “Do not match, Inherit: Fitness surrogates for genetics-based machine learning techniques”, Genetic and Evolutionary Computation Conference, 1798 (2007) http://doi.acm.org/10.1145/1276958.1277319
[174] A. Orriols-Puig, D. E. Goldberg, K. Sastry, E. Bernadó-Mansilla, “Modeling XCS in class imbalances: Population sizing and parameter settings”, Genetic and Evolutionary Computation Conference, 1838 (2007) Abstract PDF http://doi.acm.org/10.1145/1276958.1277324
[176] A. Orriols-Puig, K. Sastry, P. L. Lanzi, D. E. Goldberg, E. Bernadó-Mansilla E, “Modeling selection pressure in XCS for proportionate and tournament selection”, Genetic and Evolutionary Computation Conference, 1846 (2007) PDF http://doi.acm.org/10.1145/1276958.1277325
[168] M. Pelikan, K. Sastry, D. E. Goldberg, “Sporadic model building for efficiency enhancementof the hierarchical BOA”, Genetic Programming and Evolvable Machines (accepted 2007)
[170] K. Sastry, D. E. Goldberg, X. Llorà, “Towards billion-bit optimization via a parallel estimation of distribution algorithm”, Genetic and Evolutionary Computation Conference, 577 (2007) (*Nominated for best paper in the EDA track.) Abstract PDF http://doi.acm.org/10.1145/1276958.1277077
[171] K. Sastry, M. Pelikan, D. E. Goldberg, “Empirical Analysis of Ideal Recombination on Random Decomposable Problems”, Genetic and Evolutionary Computation Conference, 1388 (2007) (*Nominated for best paper in the GA track.) Abstract http://doi.acm.org/10.1145/1276958.1277216
[192] LinLin Wang and D.D. Johnson, “Shear instabilities in metallic nanoparticles: hydrogen-stabilized structure of Pt37 on carbon”, Journal of American Chemical Society 129, 3658-64, 7 pages (2007) Abstract PDF http://dx.doi.org/10.1021/ja068750h
[172] T.-L. Yu, K. Sastry, D. E. Goldberg, M. Pelikan, “Let's get ready to rumble redux: Crossover versus mutation head to head on exponentially scaled problems”, Genetic and Evolutionary Computation Conference, 1380 (2007) (*Nominated for best paper in the EDA track.) Abstract PDF http://doi.acm.org/10.1145/1276958.1277215
[140] M. Pelikan, K. Sastry, E. Cantú-Paz, “Scalable Optimization via Probabilistic Modeling: From Algorithms to Applications. Berlin: Springer” (2006) See here for more details.
[162] Salvador Barraza-Lopez, Peter M Albrecht, Nichols A. Romero, and Karl Hess, “Ab initio study of semiconducting carbon nanotubes adsorbed on the Si(100) surface: Diameter- and registration-dependent atomic configurations and electronic properties”, Journal of Applied Physics 100 (124304), 10 pages (2006) Abstract PDF
[128] E.W. Carlson, K.A. Dahmen, E. Fradkin, “Hysteresis and Noise from Electronic Nematicity in High Temperature Superconductors”, Physical Review Letters 96, 097003/1-4 (2006) Abstract http://arxiv.org/abs/cond-mat/0510259
[83] D. Das, R. M. Martin, and M. Kalos, “Quantum Monte Carlo using a Stochastic Poisson Solver”, Physical Review E 73 (4), 046702 (accepted 2006)
[131] K. Delaney, C. Pierleoni and D. M. Ceperley, “Quantum Monte Carlo Simulation of the High Pressure Molecular-Atomic Transition in Fluid Hydrogen”, Physical Review Letters 97, 235702 (2006) (Supported by the MCC Visitor Program) PDF http://dx.doi.org/10.1103/PhysRevLett.97.235702
[137] Subhradip Ghosh, D.A. Biava, W.A. Shelton, and D.D. Johnson, “Systematically exact, integrated density of states Lloyd's formula for disordered alloys with short-range order”, Physical Review B 73, 085106-12 (2006) Abstract DOI Download
[147] Misha Kilmer and Eric de Sturler, “Recycling Subspace Information for Diffuse Optical Tomography”, SIAM Journal on Scientific Computing, SIAM Journal on Scientific Computing 27 (6), 2140-66, 27 pages (2006) (Also available from http://www.math.vt.edu/people/sturler) Abstract PDF http://epubs.siam.org/SISC/volume-27/art_61027.html
[121] Amit P. Mehta, Karin A. Dahmen, and Yehuda Ben-Zion, “Universal mean moment rate profiles of earthquake ruptures”, Physical Review E (in press 2006) Abstract http://xxx.lanl.gov/abs/cond-mat/0509226
[141] M. Pelikan, K. Sastry, D. E. Goldberg, “Sporadic Model Building for Efficiency Enhancement of hBOA”, Genetic and Evolutionary Computation Conference, 405-12 (2006) Abstract PDF
[139] K. Sastry, C. F. Lima, D. E. Goldberg, “Evaluation Relaxation Using Substructural Information and Linear Estimation”, Genetic and Evolutionary Computation Conference, 419-26 (2006) Abstract PDF
[142] K. Sastry, P. Winward, D. E. Goldberg, C. F. Lima, “Fluctuating Crosstalk as a Source of Deterministic oise and its Effects on GA Scalability”, Applications of Evolutionary Computing: EvoWorkshops 2006, 740-51 (2006) Abstract http://dx.doi.org/10.1007/11732242_72
[144] Chris Siefert and Eric de Sturler, “Probing Methods for Saddle-Point Problems”, Electronic Transactions on Numerical Analysis 22, 163-8, 21 pages (2006) Abstract PDF http://etna.mcs.kent.edu/vol.22.2006/pp163-183.dir/pp163-183.pdf
[136] L-L Wang, S.V. Khare, V. Chirita, D.D. Johnson, A.A. Rockett, A.I. Frenkel, N.H. Mack, and R.G. Nuzzo, “Origin of bulk-like structure and bond distributions of Pt37 and Pt6Ru31 clusters on carbon: comparison of theory and experiment”, Journal of American Chemical Society 128 (1), 131-42 (2006) Abstract DOI Download
[165] Bradley Chase and Alfred Hubler, “Inverse Energy-Uncertainty Relation for a Simple Information Engine”, Physical Review Letters, 4 pages (2005) Abstract http://server10.how-why.com/papers/Chase05.pdf (Submitted not published)
[164] P. Melby, N. Weber, A. Hubler, “Dynamics of Self-Adjusting System with Noise”, Chaos 15 (033902), 7 pages (2005) Abstract PDF
[114] G. A. Narvaez, J. Kim and J. W. Wilkins, “Effects of morphology on phonons in nanoscopic silver grains”, Physical Review B 72, 155411 (2005)
[134] L-L Wang and D.D. Johnson, “Removing critical errors for DFT application to transition-metal nanoclusters: correct ground-state structures of Ru clusters”, Journal of Physical Chemistry B 109 (49), L23113-2317 (2005) Abstract DOI download
[19] D. A. Richie, Jeongnim Kim, Stephen A. Barr, Kaden R. A. Hazzard, Richard Hennig, and John W. Wilkins, “Complexity of Small Silicon Self-Interstitial Defects”, Physical Review Letters 92, 045501 (2004)
[75] L.-X. Zhang, J. P. Leburton, R. Hanson, and L. P., “Engineering the quantum point contact response to single-electron charging in a few-electron quantum-dot circuit”, Applied Physics Letters 85, 2628, 4 pages (2004)
[37] M. D. Deshpande, D. G. Kanhere, I. Vasiliev, and R. M. Martin, “Ab initio absorption spectra of Aln (n=2-13) clusters”, Physical Review B 68, 035428 (2003)
[54] A. Rockett, D.D. Johnson, S.V. Khare, and B.R. Tuttle, “Prediction of Dopant Ionization Energies in Silicon: the importance of strain”, Physical Review B 68, 233208-4 (2003) (Brief Reports)
[52] M. D. Deshpande, D. G. Kanhere, I. Vasiliev, and R. M. Martin, “Density-Functional Study of Structural and Electronic Properties of a$_{n}$Li and Li$_{n}$ a ($1 leq n leq 12$) Clusters”, Physical Review A 65 (3), 033202-6 (2002)
[53] M. D. Deshpande, D. G. Kanhere, P. V. Panat, I. Vasiliev, and R. M. Martin, “Ground-State Geometries and Optical Properties of a$_{8-x}$Li$_{x}$ ($x = 0 - 8$) Clusters”, Physical Review A 65 (5), 053204-8 (2002)
[55] S. Lee, J. Kim, L. Jonsson, J. W. Wilkins, G. W. Bryant and G. Klimeck, “Many-body levels of optically excited and multiply charged InAs nanocrystals modeled by semi-empirical tight-binding”, Physical Review B vol 66, 235307/1-2 (2002)
[39] Mehta AP, Mills AC, Dahmen KA, Sethna JP, “Universal pulse shape scaling function and exponents: critical test for avalanche models applied to Barkhausen noise”, Physical Review E 65, 046139 (2002) PDF
[56] I. Vasiliev, R. M. Martin, and J. R. Chelikowsky, “Surface Oxidation Effects on the Optical Properties of Silicon anocrystals”, Physical Review B 65 (12), R121302-4 (2002)
[64] Carpenter JH,Dahmen KA,Sethna JP,Friedman G,Loverde S,Vanderveld R, “Subloops,Barkhausen noise, and disorder induced critical behavior”, Journal of Applied Physics 89 (11), 6799-801 (2001) HTML
[67] Sethna JP, Dahmen KA, Myers CR, “Crackling Noise”, Nature 410, 242-50 (2001) PDF
[277] Karin A. Dahmen, Yehuda Ben-Zion, and Jonathan T. Uhl, “A micromechanical model for deformation in solids with universal predictions for stress strain curves and slip avalanches”, Physical Review Letters (102), 175501 (2009) (Was selected for the Virtual Journal of Nanoscale Science and Technology, to be published on May 11th, 2009) http://dx.doi.org/10.1103/PhysRevLett.102.175501
[276] Karin A. Dahmen, Y. Ben-Zion, and J.T. Uhl, “A Lattice Model for Sheared Granular Materials with Detail Independent Predictions for Slip Avalanche Statistics”, Nature Materials (2009)
[303] Brent Kraczek, Scott Miller, R.B. Haber, and D.D. Johnson, “Spacetime, balance-law formulation of coupled atomistic-continuum dynamics for solids”, Journal of Computational Physics (2009)
[299] Y. Liu and Karin A. Dahmen, “Random Field Ising model in and out of equilibrium”, Europhysics Letters (2009) http://dx.doi.org/10.1209/0295-5075/86/56003 (Submitted not published)
[288] Y. Liu and Andrew Missel, Karin A. Dahmen, Pierre Le Doussal, Kay Joerg Wiese, “Measuring functional renormalization group fixed-point functions in the random field Ising model”, Physical Review E (2009) (Submitted not published)
[278] J.B. Liu and D.D. Johnson, “bcc-to-hcp Transformation Pathways in Iron versus Hydrostatic Pressure: Coupled Shuffle and Shear Modes,”, Physical Review B 79 (13), 134113-9 (2009)
[282] D.V. Melnikov, J. Kim, L-X Zhang and J.P. Leburton, “Few-electron Quantum Dot Spintronics”, Frontiers in Nanoscience and Nanotechnology (in press 2009) (Fu and Narlikar eds., Oxford University Press)
[290] Scott Miller, Brent Kraczek, R.B. Haber, and D.D. Johnson, “Multi-field spacetime discontinuous Galerkin methods for linearized elastodynamics,”, Computer Methods in Applied Mechanics and Engineering (2009) (Submitted not published)
[284] A.R. Missel, and K.A. Dahmen, Phys. Rev. E, “Hopping Transport in Hostile Reaction-Diffusion Systems”, Physical Review E 79 (21126) (2009) http://dx.doi.org/10.1103/PhysRevE.79.021126
[280] Glaucio H. Paulino, Eric de Sturler, Shun Wang, and Chau Le, “Continuum Topology optimization with preconditioned Krylov subspace recycling”, Structural and Multidisciplinary Optimization (2009) (Submitted not published)
[307] Robert A. White, Y. Liu and Karin A. Dahmen, “Thermal Effects on Crackling Noise”, Europhysics Letters (2009) http://dx.doi.org/10.1209/0295-5075/86/50001
[289] Todd D. Beaudet, Michele Casula, Jeongnim Kim, Sandro Sorella, and Richard M. Martin, “Molecular hydrogen adsorbed on benzene: Insights from a quantum Monte Carlo study”, Journal of Chemical Physics 129, 164711 (2008) http://dx.doi.org/10.1063/1.2987716
[281] S. Kibey, H. Sehitoglu, and D. D. Johnson, “Energy landscape for martensitic phase transformation in shape memory NiTi”, Acta Materialia 57 (5), 1624-9 (2008) http://dx.doi.org/10.1016/j.actamat.2008.12.008
[180] J. Kim, D. V. Melnikov, and J-.P. Leburton, “Coupled Quantum Dots as Two-Level Systems: A Variational Monte Carlo Approach.”, The Open Condensed Matter Physics Journal 1, 1 (2008) Abstract
[308] J. Kim, D.V. Melnikov and J.P. Leburton, “Tunable many-body effects in triple quantum dot”, Physical Review B (in press 2008)
[205] B. Kraczek, D. D. Johnson, R. B. Haber, “A spacetime, balance-law formulation of coupled atomistic and continuum dynamics for solids” (2008) (Submitted not published)
[305] Y. Liu, Karin A. Dahmen, and A. Berger, “The role of dipolar interactions for the determination of intrinsic switching field distributions”, Applied Physics Letters 92, 222503 (2008) http://dx.doi.org/10.1063/1.2938695
[279] Y. Liu, Karin A. Dahmen, and A. Berger, “Comparative Study of the DeltaH(M, DeltaM) method reliability for square and triangular lattices”, Journal of Applied Physics 103 (07F504) (2008) (published) http://dx.doi.org/0.1063/1.2828810
[206] S. T. Miller, R. B. Haber, “A spacetime discontinuous Galerkin method for hyperbolic heat conduction” (2008) (Submitted not published)
[283] Andrew Missel and Karin A. Dahmen, “Hopping Conduction and Bacteria: Transport in Disordered Reaction Diffusion Systems”, Physical Review Letters 100 (58301) (2008) http://dx.doi.org/10.1103/PhysRevLett.100.058301
[204] J. Palaniappan, S. T. Miller, R. B. Haber, “Sub-cell shock capturing and spacetime discontinuity tracking for nonlinear conservation laws”, International Journal for Numerical Methods in Fluids (accepted 2008)
[201] Ivan S. Ufimtsev and Todd J. Martinez, “Quantum Chemistry on Graphical Processing Units. 1. Strategies for Two-Electron Integral Evaluation”, Journal of Chemical Theory and Computation (2008) Abstract http://dx.doi.org/10.1021/ct700268q
[203] I. S. Ufimtsev and T. J. Martinez, “Graphical Processing Units for Quantum Chemistry”, Computing in Science and Engineering 10 (6), 26 (2008)
[213] Shun Wang, Eric de Sturler, and Glaucio H. Paulino, “Dynamic Adaptive Mesh Refinement for Topology Optimization”, International Journal for Numerical Methods in Engineering (2008) (Submitted not published)
[199] J. Xu and A. W. Huebler, “Detecting quasiperiodic structures with double diffraction”, Europhysics Letters 81, 16002 (in press 2008) http://dx.doi.org/10.1209/0295-5075/81/16002
[173] J. Bacardit, M. Stout, J.D. Hirst, K. Sastry, X. Llorà, N. Krasnogor, “Automated alphabet reduction method with evolutionary algorithms for protein structure prediction”, Genetic and Evolutionary Computation Conference, 346 (2007) Abstract http://doi.acm.org/10.1145/1276958.1277033
[158] M. V. Butz, D. E. Goldberg, P. L. Lanzi, K. Sastry, “Problem solution sustenance in XCS: Markov chain analysis of niche support distributions and the impact on computational complexity.”, Genetic and Evolutionary Computation Conference 8 (1), 5-37 (2007) Abstract PDF Springer link
[143] Glenn Foster, Alfred W. Hubler, Karin Dahmen, “Resonant forcing of multi-dimensional chaotic map dynamics”, Physical Review E 75, 036212, 9 pages (2007) Abstract http://server10.how-why.com/papers/glenn_pre.pdf
[178] Gerig, Austin; Hubler, Alfred, “Chaos in a one-dimensional compressible flow”, Physical Review E, 4 pages (2007) Abstract http://dx.doi.org/10.1103/PhysRevE.75.045202
[214] Brent Kraczek, “A Spacetime, balance-law formulation of coupled atomistic and continuum dynamics for solids” (2007) http://www.mcc.uiuc.edu/publications/theses/Kraczek_Brent.pdf
[175] X. Llorà, K. Sastry, T.-L. Yu, D. E. Goldberg, “Do not match, Inherit: Fitness surrogates for genetics-based machine learning techniques”, Genetic and Evolutionary Computation Conference, 1798 (2007) http://doi.acm.org/10.1145/1276958.1277319
[185] Dmitriy V. Melnikov, Jean-Pierre Leburton,Ahmed Taha, and Nahil Sobh, “Coulomb localization and exchange modulation in two-electron coupled quantum dots”, Physical Review B 74, 041309-1-4, 4 pages (2007) Abstract
[186] D.V. Melnikov , L.-X. Zhang , J.-P. Leburton, “Exchange coupling between two electrons in double quantum dot structures”, Current Opinion in Solid State & Materials Science 10, 114-9, 7 pages (2007) Abstract
[174] A. Orriols-Puig, D. E. Goldberg, K. Sastry, E. Bernadó-Mansilla, “Modeling XCS in class imbalances: Population sizing and parameter settings”, Genetic and Evolutionary Computation Conference, 1838 (2007) Abstract PDF http://doi.acm.org/10.1145/1276958.1277324
[176] A. Orriols-Puig, K. Sastry, P. L. Lanzi, D. E. Goldberg, E. Bernadó-Mansilla E, “Modeling selection pressure in XCS for proportionate and tournament selection”, Genetic and Evolutionary Computation Conference, 1846 (2007) PDF http://doi.acm.org/10.1145/1276958.1277325
[168] M. Pelikan, K. Sastry, D. E. Goldberg, “Sporadic model building for efficiency enhancementof the hierarchical BOA”, Genetic Programming and Evolvable Machines (accepted 2007)
[166] K. Sastry, D.D. Johnson, D. E. Goldberg, “Scalability of a hybrid extended compact genetic algorithm for ground state optimization of clusters.”, Materials and Manufacturing Processes 22, 570, 7 pages (2007) Abstract http://dx.doi.org/10.1080/10426910701319654
[167] K. Sastry, D.D. Johnson, A. L. Thompson, D. E. Goldberg, T. J. Martinez, J. Leiding, J. Owens, “Optimization of Semiempirical Quantum Chemistry Methods via Multiobjective Genetic Algorithms: Accurate Photochemistry for Larger Molecules and Longer Time Scales”, Materials and Manufacturing Processes 22, 9 pages (2007) Abstract http://dx.doi.org/10.1080/10426910701319506
[170] K. Sastry, D. E. Goldberg, X. Llorà, “Towards billion-bit optimization via a parallel estimation of distribution algorithm”, Genetic and Evolutionary Computation Conference, 577 (2007) (*Nominated for best paper in the EDA track.) Abstract PDF http://doi.acm.org/10.1145/1276958.1277077
[171] K. Sastry, M. Pelikan, D. E. Goldberg, “Empirical Analysis of Ideal Recombination on Random Decomposable Problems”, Genetic and Evolutionary Computation Conference, 1388 (2007) (*Nominated for best paper in the GA track.) Abstract http://doi.acm.org/10.1145/1276958.1277216
[177] Martin S. Singleton, Alfred W. Huebler, “Learning rate and attractor size of the single-layer perceptron”, Physical Review E 75, 026704, 13 pages (2007) (Also selected by the editors for the March 2007 Virtual Journal of Biological Physics Research) Abstract http://link.aps.org/abstract/PRE/v75/e026704
[159] Jordan E. Vincent, Jeongnim Kim, and Richard M. Martin, “Quantum Monte Carlo calculations of the optical gaps of Ge nanoclusters using core-polarization potentials”, Physical Review B 75, 045302, 10 pages (2007) Abstract http://dx.doi.org/10.1103/PhysRevB.75.045302
[148] Shun Wang, Eric de Sturler, and Glaucio H. Paulino, “Large-Scale Topology Optimization using Preconditioned Krylov Subspace Methods with Recycling”, International Journal for Numerical Methods in Engineering 69 (12), 2441-68, 28 pages (2007) Abstract PDF http://dx.doi.org/10.1002/nme.1798
[172] T.-L. Yu, K. Sastry, D. E. Goldberg, M. Pelikan, “Let's get ready to rumble redux: Crossover versus mutation head to head on exponentially scaled problems”, Genetic and Evolutionary Computation Conference, 1380 (2007) (*Nominated for best paper in the EDA track.) Abstract PDF http://doi.acm.org/10.1145/1276958.1277215
[191] N. A. Zarkevich, Teck L. Tan, and D. D. Johnson, “First-principles prediction of phase-segregating alloy phase diagrams and a rapid design estimates of their transition temperatures”, Physical Review B 75, 104203-1-2 (2007) Abstract PDF http://dx.doi.org/10.1103/PhysRevB.75.104203
[181] L.-X. Zhang, D. V. Melnikov and J.P. Leburton, “Exchange interaction and stability diagram of coupled quantum dots in magnetic fields”, Physical Review B 74, 205306-1-6, 6 pages (2007) Abstract
[182] L-X Zhang, D. V. Melnikov and J.P. Leburton, “Engineering Exchange Coupling in Double Elliptic Quantum Dots”, IEEE Transactions on Nanotechnology 6 (2), 250-6, 6 pages (2007) Abstract
[140] M. Pelikan, K. Sastry, E. Cantú-Paz, “Scalable Optimization via Probabilistic Modeling: From Algorithms to Applications. Berlin: Springer” (2006) See here for more details.
[130] B. Clark and D. M. Ceperley, “Off-Diagonal Long-Range Order in Solid 4He”, Physical Review Letters 96, 105301 (2006) http://arxiv.org//abs/cond-mat/0512547
[104] D. Coe and T. J. Martínez, “Ab Initio Molecular Dynamics of Excited State Intramolecular Proton Transfer Around a Three-State Conical Intersection in Malonaldehyde”, Journal of Physical Chemistry A 110 (2), 618-30 (2006) DOI link
[131] K. Delaney, C. Pierleoni and D. M. Ceperley, “Quantum Monte Carlo Simulation of the High Pressure Molecular-Atomic Transition in Fluid Hydrogen”, Physical Review Letters 97, 235702 (2006) (Supported by the MCC Visitor Program) PDF http://dx.doi.org/10.1103/PhysRevLett.97.235702
[135] Daniel Finkenstadt and D.D. Johnson, “Solute/Defect-Mediated Pathway for Rapid anoprecipitation in Solid-Solutions: Gamma-Surface Analysis in fcc Al-Ag”, Physical Review B 73, 024101-10 (2006) Abstract DOI Download
[149] Glenn Foster, Alfred W. Hubler, Karin Dahmen, “Resonance Spectroscopy with Chaotic Forcing Functions”, Physical Review E (2006) Abstract PDF
[137] Subhradip Ghosh, D.A. Biava, W.A. Shelton, and D.D. Johnson, “Systematically exact, integrated density of states Lloyd's formula for disordered alloys with short-range order”, Physical Review B 73, 085106-12 (2006) Abstract DOI Download
[163] S. A. Khairallah, M. B. Sevryuk, D. M. Ceperley and J. P. Toennies, “Theory of Small Para-Hydrogen Clusters, Magic Numbers and Superfluid Sizes”, Physical Review Letters (2006) (Submitted not published)
[79] B. G. Levine, C. Ko, J. Quenneville, and T. J. Martinez, “Conical Intersections and Double Excitations in Time Dependent Density Functional Theory”, Molecular Physics 104 (05-07), 1039-51 (2006) (Invited article for a Special Issue in Honour of Professor Michael Albert Robb) DOI link
[121] Amit P. Mehta, Karin A. Dahmen, and Yehuda Ben-Zion, “Universal mean moment rate profiles of earthquake ruptures”, Physical Review E (in press 2006) Abstract http://xxx.lanl.gov/abs/cond-mat/0509226
[141] M. Pelikan, K. Sastry, D. E. Goldberg, “Sporadic Model Building for Efficiency Enhancement of hBOA”, Genetic and Evolutionary Computation Conference, 405-12 (2006) Abstract PDF
[138] K. Sastry, D.D. Johnson, A. L. Thompson, D. E. Goldberg, T. J. Martinez, J. Leiding, J. Owens, “Multiobjective Genetic Algorithms for Multiscaling Excited State Direct Dynamics in Photochemistry”, *Chosen as Best Paper in Track. *Won 2006 "Silver Humie" in Human Competitive Results Awards at Genetic and Evolutionary Computation Conference, Genetic and Evolutionary Computation Conference, 1745-52, 8 pages (2006) (Best paper award in Real World Applications track. Silver Humie award at the Human Competitive Results Competition) Abstract PDF
[139] K. Sastry, C. F. Lima, D. E. Goldberg, “Evaluation Relaxation Using Substructural Information and Linear Estimation”, Genetic and Evolutionary Computation Conference, 419-26 (2006) Abstract PDF
[142] K. Sastry, P. Winward, D. E. Goldberg, C. F. Lima, “Fluctuating Crosstalk as a Source of Deterministic oise and its Effects on GA Scalability”, Applications of Evolutionary Computing: EvoWorkshops 2006, 740-51 (2006) Abstract http://dx.doi.org/10.1007/11732242_72
[155] Jia Ye, “Nanoscale patterning of chemical order introduced by displacement cascades in irradiated alloys” (2006) (Advisor: Pascal Bellon) Abstract PDF
[156] Jia Ye and Pascal Bellon, “Nanoscale patterning of chemical order introduced by displacement cascades in irradiated L10 alloys: Scaling analysis of the fluctuations of order”, Physical Review B 73, 224121-1-1, 11 pages (2006) Abstract http://dx.doi.org/10.1103/PhysRevB.73.224121
[126] Khairallah, S.A., Ceperley, D.M., “Superfluidity of dense /sup 4/He in Vycor”, Physical Review Letters 95 (18), 185301 (2005)
[21] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “Genetic programming for multitimescale modeling”, Physical Review B 72, 085438-1-9 (2005) (*Chosen as focused article of frontier research in Virtual Journal of Nanoscale Science & Technology, Vol 12, Issue 9 (2005).) Abstract DOI download
[22] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “Genetic Programming for MultiScale Modeling”, International Journal of MultiScale Computational Engineering 2 (2), 239-56 (2005)
[76] Kumara Sastry, Hussein A. Abbass, David E. Goldberg, D. D. Johnson, “Sub-structural Niching in Estimation Distribution Algorithms”, Genetic and Evolutionary Computation Conference, 671-8 (2005) (*Nominated for best paper in the EDA track.) Abstract PDF
[109] A. Toniolo, B. Levine, A. Thompson, J. Quenneville, M. Ben-Nun, J. Owens, S. Olsen, L. Manohar, and T. J. Martìnez, “Photodynamics from First Principles”, ed. A. Kutateladze, Computational Methods in Organic Photochemistry (2005) (ISBN: 0824753453) CRC Press book description
[18] Nichols A. Romero, Jeongnim Kim and Richard M. Martin, “Electron-Phonon Interactions in C28-derived Molecular Solids”, Physical Review B 70, 140504, 4 pages (2004)
[20] Nikolai Zarkevich and D.D. Johnson, “Reliable First-Principles Alloy Thermodynamics via Truncated Cluster Expansions”, Physical Review Letters 92, 255702-1/4 (2004)
[132] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “"Genetic programming for multitimescale modeling,"”, *Chosen as focused article of frontier research in Virtual Journal of Nanoscale Science & Technology, Vol 12, Issue 9 (2005)., Physical Review B 72, 085438-1-9 Abstract http://dx.doi.org/10.1103/PhysRevB.72.113105
[291] Shun Wang and Eric de Sturler, “Multilevel sparse approximate inverse preconditioners for adaptive mesh refinement”, Linear Algebra and its Applications (431), 409 () (published) PDF http://dx.doi.org/10.1016/j.laa.2009.02.021
[319] Yang Liu, “Unexpected Universality in Disordered Systems and Modeling Perpendicular Recording Media” (2009) (Advisor: Karin Dahmen) PDF
[299] Y. Liu and Karin A. Dahmen, “Random Field Ising model in and out of equilibrium”, Europhysics Letters (2009) http://dx.doi.org/10.1209/0295-5075/86/56003 (Submitted not published)
[278] J.B. Liu and D.D. Johnson, “bcc-to-hcp Transformation Pathways in Iron versus Hydrostatic Pressure: Coupled Shuffle and Shear Modes,”, Physical Review B 79 (13), 134113-9 (2009)
[284] A.R. Missel, and K.A. Dahmen, Phys. Rev. E, “Hopping Transport in Hostile Reaction-Diffusion Systems”, Physical Review E 79 (21126) (2009) http://dx.doi.org/10.1103/PhysRevE.79.021126
[289] Todd D. Beaudet, Michele Casula, Jeongnim Kim, Sandro Sorella, and Richard M. Martin, “Molecular hydrogen adsorbed on benzene: Insights from a quantum Monte Carlo study”, Journal of Chemical Physics 129, 164711 (2008) http://dx.doi.org/10.1063/1.2987716
[296] D. M. Ceperley, “Path Integrals and Supersolids”, Computer Physics Communications, 307-14 (2008) (eds. W. Janke, A. Pelster, World Scientific)
[180] J. Kim, D. V. Melnikov, and J-.P. Leburton, “Coupled Quantum Dots as Two-Level Systems: A Variational Monte Carlo Approach.”, The Open Condensed Matter Physics Journal 1, 1 (2008) Abstract
[283] Andrew Missel and Karin A. Dahmen, “Hopping Conduction and Bacteria: Transport in Disordered Reaction Diffusion Systems”, Physical Review Letters 100 (58301) (2008) http://dx.doi.org/10.1103/PhysRevLett.100.058301
[210] L-L. Wang and D.D. Johnson, “Electrocatalytic Properties of PtBi and PtPb Line Compounds via DFT: CO and H adsorption”, Journal of Physical Chemistry C (112), 8266 (2008) http://dx.doi.org/10.1021/jp7110956
[211] N.A. Zarkevich, Teck L. Tan, L-L. Wang and D.D. Johnson, “Low-energy antiphase boundaries, degenerate superstructures, and phase stability in frustrated Ising model and Ag-Au alloys”, Physical Review B (77), 144208 (2008) http://dx.doi.org/10.1103/PhysRevB.77.144208
[173] J. Bacardit, M. Stout, J.D. Hirst, K. Sastry, X. Llorà, N. Krasnogor, “Automated alphabet reduction method with evolutionary algorithms for protein structure prediction”, Genetic and Evolutionary Computation Conference, 346 (2007) Abstract http://doi.acm.org/10.1145/1276958.1277033
[207] S. Kibey, J. B. Liu, D. D. Johnson and H. Sehitoglu, “Predicting twinning stress in fcc metals: linking twin-energy pathways to twin nucleation”, Acta Materialia (55), 6843 (2007) http://dx.doi.org/10.1016/j.actamat.2007.08.042
[175] X. Llorà, K. Sastry, T.-L. Yu, D. E. Goldberg, “Do not match, Inherit: Fitness surrogates for genetics-based machine learning techniques”, Genetic and Evolutionary Computation Conference, 1798 (2007) http://doi.acm.org/10.1145/1276958.1277319
[183] Dmitriy V. Melnikov and Jean-Pierre Leburton, “Single-particle state mixing in two-electron double quantum dots”, Physical Review B 73, 155301-1-5, 5 pages (2007) Abstract
[184] Dmitriy V. Melnikov and Jean-Pierre Leburton, “Single-Paticle State Mixing and Coulomb Localization in Two- Electron Realistic Coupled Quantum Dots”, physica status solidi (c) 4 (2), 578-81, 4 pages (2007) Abstract http://dx.doi.org/10.1002/pssc.200673206
[185] Dmitriy V. Melnikov, Jean-Pierre Leburton,Ahmed Taha, and Nahil Sobh, “Coulomb localization and exchange modulation in two-electron coupled quantum dots”, Physical Review B 74, 041309-1-4, 4 pages (2007) Abstract
[186] D.V. Melnikov , L.-X. Zhang , J.-P. Leburton, “Exchange coupling between two electrons in double quantum dot structures”, Current Opinion in Solid State & Materials Science 10, 114-9, 7 pages (2007) Abstract
[174] A. Orriols-Puig, D. E. Goldberg, K. Sastry, E. Bernadó-Mansilla, “Modeling XCS in class imbalances: Population sizing and parameter settings”, Genetic and Evolutionary Computation Conference, 1838 (2007) Abstract PDF http://doi.acm.org/10.1145/1276958.1277324
[176] A. Orriols-Puig, K. Sastry, P. L. Lanzi, D. E. Goldberg, E. Bernadó-Mansilla E, “Modeling selection pressure in XCS for proportionate and tournament selection”, Genetic and Evolutionary Computation Conference, 1846 (2007) PDF http://doi.acm.org/10.1145/1276958.1277325
[166] K. Sastry, D.D. Johnson, D. E. Goldberg, “Scalability of a hybrid extended compact genetic algorithm for ground state optimization of clusters.”, Materials and Manufacturing Processes 22, 570, 7 pages (2007) Abstract http://dx.doi.org/10.1080/10426910701319654
[167] K. Sastry, D.D. Johnson, A. L. Thompson, D. E. Goldberg, T. J. Martinez, J. Leiding, J. Owens, “Optimization of Semiempirical Quantum Chemistry Methods via Multiobjective Genetic Algorithms: Accurate Photochemistry for Larger Molecules and Longer Time Scales”, Materials and Manufacturing Processes 22, 9 pages (2007) Abstract http://dx.doi.org/10.1080/10426910701319506
[170] K. Sastry, D. E. Goldberg, X. Llorà, “Towards billion-bit optimization via a parallel estimation of distribution algorithm”, Genetic and Evolutionary Computation Conference, 577 (2007) (*Nominated for best paper in the EDA track.) Abstract PDF http://doi.acm.org/10.1145/1276958.1277077
[171] K. Sastry, M. Pelikan, D. E. Goldberg, “Empirical Analysis of Ideal Recombination on Random Decomposable Problems”, Genetic and Evolutionary Computation Conference, 1388 (2007) (*Nominated for best paper in the GA track.) Abstract http://doi.acm.org/10.1145/1276958.1277216
[159] Jordan E. Vincent, Jeongnim Kim, and Richard M. Martin, “Quantum Monte Carlo calculations of the optical gaps of Ge nanoclusters using core-polarization potentials”, Physical Review B 75, 045302, 10 pages (2007) Abstract http://dx.doi.org/10.1103/PhysRevB.75.045302
[192] LinLin Wang and D.D. Johnson, “Shear instabilities in metallic nanoparticles: hydrogen-stabilized structure of Pt37 on carbon”, Journal of American Chemical Society 129, 3658-64, 7 pages (2007) Abstract PDF http://dx.doi.org/10.1021/ja068750h
[208] L-L Wang and D.D. Johnson, “Density functional study of structural trends for late-transition-metal 13-atom clusters”, Physical Review B 75 (23), 235405 (2007) http://dx.doi.org/10.1103/PhysRevB.75.235405
[209] L-L Wang and D.D. Johnson, “Shear instabilities in metallic nanoparticles: hydrogen-stabilized structure of Pt37 on carbon,”, Journal of American Chemical Society 129 (12), 3658 (2007) http://dx.doi.org/10.1021/ja068750h
[172] T.-L. Yu, K. Sastry, D. E. Goldberg, M. Pelikan, “Let's get ready to rumble redux: Crossover versus mutation head to head on exponentially scaled problems”, Genetic and Evolutionary Computation Conference, 1380 (2007) (*Nominated for best paper in the EDA track.) Abstract PDF http://doi.acm.org/10.1145/1276958.1277215
[191] N. A. Zarkevich, Teck L. Tan, and D. D. Johnson, “First-principles prediction of phase-segregating alloy phase diagrams and a rapid design estimates of their transition temperatures”, Physical Review B 75, 104203-1-2 (2007) Abstract PDF http://dx.doi.org/10.1103/PhysRevB.75.104203
[181] L.-X. Zhang, D. V. Melnikov and J.P. Leburton, “Exchange interaction and stability diagram of coupled quantum dots in magnetic fields”, Physical Review B 74, 205306-1-6, 6 pages (2007) Abstract
[182] L-X Zhang, D. V. Melnikov and J.P. Leburton, “Engineering Exchange Coupling in Double Elliptic Quantum Dots”, IEEE Transactions on Nanotechnology 6 (2), 250-6, 6 pages (2007) Abstract
[140] M. Pelikan, K. Sastry, E. Cantú-Paz, “Scalable Optimization via Probabilistic Modeling: From Algorithms to Applications. Berlin: Springer” (2006) See here for more details.
[149] Glenn Foster, Alfred W. Hubler, Karin Dahmen, “Resonance Spectroscopy with Chaotic Forcing Functions”, Physical Review E (2006) Abstract PDF
[137] Subhradip Ghosh, D.A. Biava, W.A. Shelton, and D.D. Johnson, “Systematically exact, integrated density of states Lloyd's formula for disordered alloys with short-range order”, Physical Review B 73, 085106-12 (2006) Abstract DOI Download
[163] S. A. Khairallah, M. B. Sevryuk, D. M. Ceperley and J. P. Toennies, “Theory of Small Para-Hydrogen Clusters, Magic Numbers and Superfluid Sizes”, Physical Review Letters (2006) (Submitted not published)
[141] M. Pelikan, K. Sastry, D. E. Goldberg, “Sporadic Model Building for Efficiency Enhancement of hBOA”, Genetic and Evolutionary Computation Conference, 405-12 (2006) Abstract PDF
[116] Chris Strelioff, Alfred Hübler, “Medium-Term Prediction of Chaos”, Physical Review Letters 9, 044101-1-4 (2006) Abstract
[157] Jordan E. Vincent, “Quantum Monte Carlo calculations of the electronic excitations of Ge atoms, molecules and nanoclusters using core-polarization potentials” (2006) (Advisor: Richard Martin) http://www.mcc.uiuc.edu/publications/theses/Vincent_Jordan.pdf
[136] L-L Wang, S.V. Khare, V. Chirita, D.D. Johnson, A.A. Rockett, A.I. Frenkel, N.H. Mack, and R.G. Nuzzo, “Origin of bulk-like structure and bond distributions of Pt37 and Pt6Ru31 clusters on carbon: comparison of theory and experiment”, Journal of American Chemical Society 128 (1), 131-42 (2006) Abstract DOI Download
[126] Khairallah, S.A., Ceperley, D.M., “Superfluidity of dense /sup 4/He in Vycor”, Physical Review Letters 95 (18), 185301 (2005)
[92] Jian-Bo Liu, D.D. Johnson and A.V. Smirnov, “Predicting Yield-Stress Anomalies in L12 Alloys: i3Ge-Fe3Ge Pseudo-Binaries”, Acta Materialia 53, 3601-12 (2005) Abstract DOI download
[82] X. Luo and R. M. Martin, “Jahn-Teller Distortion and Ferromagnetism in the Dilute Magnetic Semiconductors GaAs:Mn and Cubic GaN:Mn”, Physical Review B (72), 035212, 6 pages (2005) http://link.aps.org/abstract/PRB/v72/e035212
[164] P. Melby, N. Weber, A. Hubler, “Dynamics of Self-Adjusting System with Noise”, Chaos 15 (033902), 7 pages (2005) Abstract PDF
[151] Nichols Anthony Romero, “Density functional study of fullerene-based solids: crystal structure, doping, and electron-phonon interaction” (2005) (Advisor: Richard Martin; Partially supported by NSF DMR03-25939 and NSF-DMR99-75660) Abstract PDF
[21] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “Genetic programming for multitimescale modeling”, Physical Review B 72, 085438-1-9 (2005) (*Chosen as focused article of frontier research in Virtual Journal of Nanoscale Science & Technology, Vol 12, Issue 9 (2005).) Abstract DOI download
[22] Kumara Sastry, D.D. Johnson, D.E. Goldberg, and P. Bellon, “Genetic Programming for MultiScale Modeling”, International Journal of MultiScale Computational Engineering 2 (2), 239-56 (2005)
[76] Kumara Sastry, Hussein A. Abbass, David E. Goldberg, D. D. Johnson, “Sub-structural Niching in Estimation Distribution Algorithms”, Genetic and Evolutionary Computation Conference, 671-8 (2005) (*Nominated for best paper in the EDA track.) Abstract PDF
[134] L-L Wang and D.D. Johnson, “Removing critical errors for DFT application to transition-metal nanoclusters: correct ground-state structures of Ru clusters”, Journal of Physical Chemistry B 109 (49), L23113-2317 (2005) Abstract DOI download
[18] Nichols A. Romero, Jeongnim Kim and Richard M. Martin, “Electron-Phonon Interactions in C28-derived Molecular Solids”, Physical Review B 70, 140504, 4 pages (2004)