3,362 research outputs found

    Pyro Techniques: A Time to Burn Some of the Bramble Bushes

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    This study\u27s original goal was to present data about teaching that would facilitate reflection on how all of us can become better teachers, especially teaching after the first year of law school. However, during the process of data analysis, the overall conclusion became broader and far different from what was initially contemplated. In the author\u27s opinion, this professor\u27s teaching is best understood as an attempt to address the effects of stress in law school. The study therefore provides further support for calls to modify law school teaching. The balance of this article is divided into three parts. The first part briefly explains the qualitative research methods used. This explanation grounds the validity of methods which are far different from the quantitative methods typically seen in law school literature. It also connects those methods to our background as law professors. The second part presents the research findings regarding the setting, the participants, and the classroom teaching itself. This description includes a number of transcript excerpts. Finally, the third part is a general discussion including guidelines drawn both from the previous pioneer work of Charles D. Kelso and from educational psychology. This discussion will address both the original goal of this study, the implications for our own teaching, and the implications for legal education more generally that became apparent in the course of the study

    Pyro Techniques: A Time to Burn Some of the Bramble Bushes

    Get PDF
    This study\u27s original goal was to present data about teaching that would facilitate reflection on how all of us can become better teachers, especially teaching after the first year of law school. However, during the process of data analysis, the overall conclusion became broader and far different from what was initially contemplated. In the author\u27s opinion, this professor\u27s teaching is best understood as an attempt to address the effects of stress in law school. The study therefore provides further support for calls to modify law school teaching. The balance of this article is divided into three parts. The first part briefly explains the qualitative research methods used. This explanation grounds the validity of methods which are far different from the quantitative methods typically seen in law school literature. It also connects those methods to our background as law professors. The second part presents the research findings regarding the setting, the participants, and the classroom teaching itself. This description includes a number of transcript excerpts. Finally, the third part is a general discussion including guidelines drawn both from the previous pioneer work of Charles D. Kelso and from educational psychology. This discussion will address both the original goal of this study, the implications for our own teaching, and the implications for legal education more generally that became apparent in the course of the study

    Directed Growth of Hydrogen Lines on Graphene: High Throughput Simulations Powered by Evolutionary Algorithm

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    We set up an evolutionary algorithm combined with density functional tight-binding (DFTB) calculations to investigate hydrogen adsorption on flat graphene and graphene monolayers curved over substrate steps. During the evolution, candidates for the new generations are created by adsorption of an additional hydrogen atom to the stable configurations of the previous generation, where a mutation mechanism is also incorporated. Afterwards a two-stage selection procedure is employed. Selected candidates act as the parents of the next generation. In curved graphene, the evolution follows a similar path except for a new mechanism, which aligns hydrogen atoms on the line of minimum curvature. The mechanism is due to the increased chemical reactivity of graphene along the minimum radius of curvature line (MRCL) and to sp3^3 bond angles being commensurate with the kinked geometry of hydrogenated graphene at the substrate edge. As a result, the reaction barrier is reduced considerably along the MRCL, and hydrogenation continues like a mechanical chain reaction. This growth mechanism enables lines of hydrogen atoms along the MRCL, which has the potential to overcome substrate or rippling effects and could make it possible to define edges or nanoribbons without actually cutting the material.Comment: 10 pages of main text, 37 pages of supplementary information, 1 supplementary vide

    Statistical hadronization of charm: from FAIR to the LHC

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    We discuss the production of charmonium in nuclear collisions within the framework of the statistical hadronization model. We demonstrate that the model reproduces very well the availble data at RHIC. We provide predictions for the LHC energy where, dependently on the charm production cross section, a dramatically different behaviour of charmonium production as a function of centrality might be expected. We extend our predictions for charm production towards the threshold energies, where charm is expected to be measured at the future FAIR facility.Comment: 4 pages, 3 figures; proceedings of QM200

    Model of correlated sequential adsorption of colloidal particles

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    We present results of a new model of sequential adsorption in which the adsorbing particles are correlated with the particles attached to the substrate. The strength of the correlations is measured by a tunable parameter σ\sigma. The model interpolates between free ballistic adsorption in the limit σ\sigma\to\infty and a strongly correlated phase, appearing for σ0\sigma\to0 and characterized by the emergence of highly ordered structures. The phenomenon is manifested through the analysis of several magnitudes, as the jamming limit and the particle-particle correlation function. The effect of correlations in one dimension manifests in the increased tendency to particle chaining in the substrate. In two dimensions the correlations induce a percolation transition, in which a spanning cluster of connected particles appears at a certain critical value σc\sigma_c. Our study could be applicable to more general situations in which the coupling between correlations and disorder is relevant, as for example, in the presence of strong interparticle interactions.Comment: 6 pages, 8 EPS figures. Phys. Rev. E (in press

    Dynamics of Phononic Dissipation at the Atomic Scale: Dependence on Internal Degrees of Freedom

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    Dynamics of dissipation of a local phonon distribution to the substrate is a key issue in friction between sliding surfaces as well as in boundary lubrication. We consider a model system consisting of an excited nano-particle which is weakly coupled with a substrate. Using three different methods we solve the dynamics of energy dissipation for different types of coupling between the nano-particle and the substrate, where different types of dimensionality and phonon densities of states were also considered for the substrate. In this paper, we present our analysis of transient properties of energy dissipation via phonon discharge in the microscopic level towards the substrate. Our theoretical analysis can be extended to treat realistic lubricant molecules or asperities, and also substrates with more complex densities of states. We found that the decay rate of the nano-particle phonons increases as the square of the interaction constant in the harmonic approximation.Comment: 10 pages, 6 figures, submitted to Phys. Rev.

    K^-/K^+ ratio at GSI in hot and dense matter

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    The K/K+K^-/K^+ ratio in heavy-ion collisions at GSI energies is studied including the properties of the participating hadrons in hot and dense matter. The determination of the temperature and chemical potential at freeze-out conditions compatible with the ratio K/K+K^-/K^+ is very delicate, and depends on the approach adopted for the antikaon self-energy. Three approaches for the KK^- self-energy are considered: non-interacting KK^-, on-shell self-energy and single-particle spectral density. With respect to the on-shell approach, the use of an energy dependent Kˉ\bar{K} spectral density, including both s- and p-wave components of the KˉN\bar{K}N interaction, lowers considerably the freeze-out temperature and gives rise to the "broad-band equilibration" advocated by Brown, Rho and Song.Comment: 8 pages, 5 figures, talk given at the Strange Quark Matter Conference, Atlantic Beach, North Carolina, March 12-17, 200
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