UScholar Works
 
Filters: Format Medium: "application/pdf" Journal Title: "Physical Review E" Collection: "ir_uspace"
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CreatorTitleDescriptionSubjectDate
1 Bedrov, Dmitro; Smith, Grant D.Anomalous pressure dependence of the structure factor in 1,4-polybutadiene melts: a molecular dynamics simulation studyNeutron scattering has shown the first diffraction peak in the structure factor of a 1,4-polybutadiene melt under compression to move to larger q values as expected but to decrease significantly in intensity. Simulations reveal that this behavior does not result from loss of structure in the polymer...Polymer melts; 1, 4-polybutadiene melts; Pressure; Structure factor2004-07
2 Miller, Jan D.; Deo, Milind; Lin, Chen-LuhDistribution of multiphase fluids in porous media: comparison between lattice Boltzmann modeling and micro-x-ray tomographyA parallel implementation of the three-dimensional Shan-and-Chen multicomponent, multiphase lattice Boltzmann method (LBM) was used to simulate the equilibrium distributions of two immiscible fluids in porous media. The simulations were successfully validated against cone-beam x-ray microtomographi...Multiphase fluid flow; porous media; X-ray microtomography2008-02
3 Goller, FranzDynamical origin of spectrally rich vocalizations in birdsongBirdsong is a model system for learned vocal behavior with remarkable parallels to human vocal development and sound production mechanisms. Upper vocal tract filtering plays an important role in human speech, and its importance has recently also been recognized in birdsong. However, the mechanisms...Taeniopygia guttata; Labial oscillations; SNILC bifurcation2008-07
4 Goller, FranzLateralization as a symmetry breaking process in birdsongThe singing by songbirds is a most convincing example in the animal kingdom of functional lateralization of the brain, a feature usually associated with human language. Lateralization is expressed as one or both of the bird's sound sources being active during the vocalization. Normal songs require ...Lateralization; Syringeal muscles; Respiration; Gating2007-03
5 Goller, FranzLow-dimensional dynamical model for the diversity of pressure patterns used in canary songDuring song production, oscine birds produce large air sac pressure pulses. During those pulses, energy is transferred to labia located at the juncture between the bronchii and the trachea, inducing the high frequency labial oscillations which are responsible for airflow modulations, i.e., the utt...Serinus canarias; Air sac pressure2009-04
6 Wu, Yong-ShiOvercoming the slowing down of flat-histogram Monte Carlo simulations: cluster updates and optimized broad-histogram ensemblesWe study the performance of Monte Carlo simulations that sample a broad histogram in energy by determining the mean first-passage time to span the entire energy space of d-dimensional ferromagnetic Ising/Potts models. We first show that flat-histogram Monte Carlo methods with single-spin flip upda...Energy space; Spin dynamics; Density of states; Cluster dynamics2005-10
7 Goller, FranzPhysiologically driven avian vocal synthesizerIn this work, we build an electronic syrinx, i.e., a programmable electronic device capable of integrating biomechanical model equations for the avian vocal organ in order to synthesize song. This vocal prosthesis is controlled by the bird's neural instructions to respiratory and the syringeal mot...2010-03
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