1,183 research outputs found
Exact stripe, checkerboard, and droplet ground states in two dimensions
Exact static nondegenerate stripe and checkerboard ground states are obtained
in a two-dimensional generalized periodic Anderson model, for a broad
concentration range below quarter filling. The random droplet states, also
present in the degenerate ground state, are eliminated by extending the
Hamiltonian with terms of different physical origin such as dimerization,
periodic charge displacements, density waves, or distorsion lines.Comment: 12 pages, 8 figure
Evidence - Discovery against the Government - Governmental Privilege to Withhold the Contents of Official Documents
Constitutional Law - Double Jeopardy - Court Interpretation When Defendent Is Charged for Two or More Offenses Arising from the Same Act
Near Zone Navier-Stokes Analysis of Heavy Quark Jet Quenching in an =4 SYM Plasma
The near zone energy-momentum tensor of a supersonic heavy quark jet moving
through a strongly-coupled SYM plasma is analyzed in terms of
first-order Navier-Stokes hydrodynamics. It is shown that the hydrodynamical
description of the near quark region worsens with increasing quark velocities.
For realistic quark velocities, , the non-hydrodynamical region is
located at a narrow band surrounding the quark with a width of approximately
in the direction parallel to the quark's motion and with a length of
roughly in the perpendicular direction. Our results can be
interpreted as an indication of the presence of coherent Yang-Mills fields
where deviation from hydrodynamics is at its maximum. In the region where
hydrodynamics does provide a good description of the system's dynamics, the
flow velocity is so small that all the nonlinear terms can be dropped. Our
results, which are compatible with the thermalization timescales extracted from
elliptic flow measurements, suggest that if AdS/CFT provides a good description
of the RHIC system, the bulk of the quenched jet energy has more than enough
time to locally thermalize and become encoded in the collective flow. The
resulting flow pattern close to the quark, however, is shown to be considerably
different than the superposition of Mach cones and diffusion wakes observed at
large distances.Comment: new revised version, 11 figures, as published in PR
Effectiveness of different trap design in mass trapping of Bothynoderes punctiventris Germar
The discovery of an aggregation attractant for Bothynoderes punctiventris Germ. raised several questions for possible improvements of IPM of Bothynoderes punctiventris in sugar beet. First results on exploration of possibilities for its use for monitoring purposes as well as for mass trapping of adults of the pest are described in this paper. Trap design effectiveness was evaluated in the overwintering fields of sugar beet weevil for two years in localities in Serbia and Hungary. Among trap designs tested it was proved that baited CSALOMON® TAL trap design was optimal
Heavy Quark Radiative Energy Loss - Applications to RHIC
Heavy quark energy loss in a hot QCD plasma is computed taking into account
the competing effects due to suppression of zeroth order gluon radiation bellow
the plasma frequency and the enhancement of gluon radiation due to transition
energy loss and medium induced Bremsstrahlung. Heavy quark medium induced
radiative energy loss is derived to all orders in opacity, .
Numerical evaluation of the energy loss suggest small suppression of high
charm quarks, and therefore provide a possible explanation for the
null effects observed by PHENIX in the prompt electron spectrum in as
and 200 AGeV.Comment: 4 pages, 4 figures, Contributed to 17th International Conference on
Ultra Relativistic Nucleus-Nucleus Collisions (Quark Matter 2004), Oakland,
California, 11-17 Jan 200
Universal Flow-Driven Conical Emission in Ultrarelativistic Heavy-Ion Collisions
The double-peak structure observed in soft-hard hadron correlations is
commonly interpreted as a signature for a Mach cone generated by a supersonic
jet interacting with the hot and dense medium created in ultrarelativistic
heavy-ion collisions. We show that it can also arise due to averaging over many
jet events in a transversally expanding background. We find that the
jet-induced away-side yield does not depend on the details of the
energy-momentum deposition in the plasma, the jet velocity, or the system size.
Our claim can be experimentally tested by comparing soft-hard correlations
induced by heavy-flavor jets with those generated by light-flavor jets.Comment: 4 pages, 3 figure
Behind the times: a brief history of motivation discourse in problem-based learning
That idea that problem-based learning (PBL) is more motivating that traditional education has been prevalent since the inception of PBL at McMaster University in the late 1960s. Evidencing this through empirical research, however, has proven to be a lot more problematic. This paper retraces how the discourse on motivation started from a laymen's conception in the early days of PBL, and slowly evolved into a field of scientific inquiry in the 1980s and 1990s. However, looking at the evolution of motivation theory over the same period, we show that motivation discourse in the burgeoning literature on motivation and PBL remained largely wedded to the laymen's approach, and failed to catch up with the new achievement-goal theory and self-determination theory approaches. This paper proceeds to analyse the explosion of studies on PBL and motivation after 2000, acknowledging efforts to move away from anecdotal accounts and provide theoretical grounding to the research. However, once again, we show that the majority of the research employed outdated motivational measures that do not fully grasp the complexity of contemporary motivation theory. The paper concludes on the observation that single-course and curriculum-wide research interventions have yielded no conclusive results on the effect of PBL on intrinsic motivation, and that future research should therefore seek to use up-to-date motivational constructs in more targeted interventions
Motives that Mediate the Associations Between Relationship Satisfaction, Orgasmic Difficulty, and the Frequency of Faking Orgasm
INTRODUCTION: Faking orgasm by women reportedly occurs quite frequently, with both relationship characteristics and orgasmic difficulty being significant predictors. AIM: We explored women's motives that might mediate the associations between orgasmic difficulty and relationship satisfaction on the one hand, with the frequency of faking orgasm on the other. METHODS: In a study of 360 Hungarian women who reported “ever” faking orgasm during partnered sex, we assessed the direct and indirect (mediated) associations between orgasmic difficulty, relationship satisfaction, and the frequency of faking orgasm. OUTCOMES: Determination of motives that mediate the association between orgasmic difficulty and the frequency of faking orgasm, and the association between relationship satisfaction and the frequency of faking orgasm. RESULTS: Increased orgasmic difficulty was directly related to increased frequency of faking orgasm (β = 0.37; P < .001), and each variable itself was related to a number of motives for faking orgasm. However, the only motive assessed in our study that mediated the relationship between orgasmic difficulty and the frequency of faking orgasm was insecurity about being perceived as abnormal or dysfunctional (indirect effect: β = 0.13; P < .001). A similar pattern emerged with relationship satisfaction and frequency of faking orgasm. These two variables were directly related in that lower relationship satisfaction predicted higher frequency of faking orgasm (β = -0.15; P = .008). Furthermore, while each variable itself was related to a number of motives for faking orgasm, the only motive assessed in our study that mediated the relationship between the 2 variables was insecurity about being perceived as abnormal or dysfunctional (indirect effect: β = -0.06; P = .008). CLINICAL TRANSLATION: Insecurity related to being perceived as abnormal or deficient, along with sexual communication, should be addressed in women with a history of faking orgasm but who want to cease doing so. STRENGTHS AND LIMITATIONS: The sample was relatively large and the online survey adhered to best practices. Nevertheless, bias may result in sample characteristics when recruitment is achieved primarily through social media. In addition, the cross-sectional sample prevented causal determination and represented Western-based values. CONCLUSIONS: The associations between orgasmic difficulty and faking orgasm, and between relationship satisfaction and faking orgasm, are both direct and indirect (mediated). The primary motive for mediating the indirect association between the predictor variables and the frequency of faking orgasm was the insecurity about being perceived as deficient or abnormal. Hevesi K, Horvath Z, Miklos E, et al. Motives that Mediate the Associations Between Relationship Satisfaction, Orgasmic Difficulty, and the Frequency of Faking Orgasm. Sex Med 2022;10:100568
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