The NLO Jet Vertex for Mueller-Navelet and Forward Jets: the Quark Part

We calculate the next-to-leading corrections to the jet vertex which is relevant for the Mueller-Navelet-jets production in p-pbar collisions and for the forward jet cross section in e-p collisions. In this first part we present the results of the vertex for an incoming quark. Particular emphasis is given to the separation of the collinear divergent part and the central region of the produced gluon.Comment: 28 pages, 8 eps figure

The NLO Jet Vertex for Mueller-Navelet and Forward Jets: the Gluon Part

In this paper we complete our calculation of the NLO jet vertex which is part of the cross section formulae for the production of Mueller Navelet jets at hadron hadron colliders and of forward jets in deep inelastic electron proton scattering.Comment: 16 pages, latex, epj style, 6 eps figure

Bayesian Model Comparison and Analysis of the Galactic Disk Population of Gamma-Ray Millisecond Pulsars

Pulsed emission from almost one hundred millisecond pulsars (MSPs) has been detected in $\gamma$-rays by the Fermi Large-Area Telescope. The global properties of this population remain relatively unconstrained despite many attempts to model their spatial and luminosity distributions. We perform here a self-consistent Bayesian analysis of both the spatial distribution and luminosity function simultaneously. Distance uncertainties, arising from errors in the parallax measurement or Galactic electron-density model, are marginalized over. We provide a public Python package for calculating distance uncertainties to pulsars derived using the dispersion measure by accounting for the uncertainties in Galactic electron-density model YMW16. Finally, we use multiple parameterizations for the MSP population and perform Bayesian model comparison, finding that a broken power law luminosity function with Lorimer spatial profile are preferred over multiple other parameterizations used in the past. The best-fit spatial distribution and number of $\gamma$-ray MSPs is consistent with results for the radio population of MSPs.Comment: 13 pages, 8 figures, 3 tables + Appendix. Public code and source list available from http://github.com/tedwards2412/MSPDis

Smooth optimal control with Floquet theory

This paper describes an approach to construct temporally shaped control pulses that drive a quantum system towards desired properties. A parametrization in terms of periodic functions with pre-defined frequencies permits to realize a smooth, typically simple shape of the pulses; their optimization can be performed based on a variational analysis with Floquet theory. As we show with selected specific examples, this approach permits to control the dynamics of interacting spins, such that gate operations and entanglement dynamics can be implemented with very high accuracy

Nonverbal Immediacy in Dyads as a Function of Degree of Acquaintance and Locus of Control

Mehrabian (1971) has summarized evidence that nonverbal immediacy behaviors such as interpersonal distance, gaze, and shoulder orientation are important in communicating interpersonal attraction. Several authors (Duke & Nowicki, 1972; Efran, 1968; Efran & Broughton, 1966) have conceptualized nonverbal immediacy differences between friends and strangers within the context of Social Learning Theory (SLT). Duke and Nowicki, for example, proposed that interpersonal distancing is mediated by specific expectancies in interactions among friends, but by generalized expectancies, such as locus of control (Rotter, 1972), when interactions involve strangers. Some support for this hypothesis is provided by a study showing that locus of control orientation was a better predictor of how far subjects would place themselves (representationally) from a hypothetical stranger than from a hypothetical friend. Using a live-interaction situation, the present study examined distance, gaze, and body orientation as a function of degree of acquaintance (friend, stranger) and internal versus external locus of control. From the immediacy formulation (Mehrabian, 1971), it was hypothesized that friends would be more nonverbally immediate than strangers on all measured nonverbal dimensions. Following SLT, it was also predicted (a) that internals should be more immediate than externals among friends, but not strangers and (b) that immediacy measures should show more change over time in interactions among strangers than friends. Female primary subjects (n = 48), selected on the basis of extreme scores on Rotter\u27s (1972) I-E Scale (internal-external locus of control), interacted in standing positions for 12 minutes with same-sex secondary subjects—either friends (n = 24) or strangers (n. = 24). Immediacy measures including frequency and duration of gaze, approach distance, and directness of body orientation were monitored by three trained observers during each one-half of the interaction; thus adding a third, within-subjects dimension to the overall design. Duration of speech, which is closely related to gaze behavior (Exline, Gray, & Schuette, 1965; Kendon, 1967; Kendon & Cook, 1969), was also recorded. The main hypotheses were not supported: friends were not more immediate than strangers; locus of control orientation was not more important in interactions involving strangers; and immediacy measures did not show more change over time in interactions among strangers. Several aspects of the data seem to contradict the hypothesis that the so-called immediacy behaviors are important in communicating interpersonal attitudes or attraction (Mehrabian, 1971). First, strangers tended to gaze longer, gaze more often, and assume more directly confronting shoulder orientations than friends. Second, immediacy measures were essentially unrelated to subjects\u27 ratings of liking for their partners, both within friend and stranger groups and across the groups combined. Finally, the immediacy measures themselves were not consistently interrelated as might be expected if the various nonverbal behaviors were elements of a common construct. These indications that gaze, distance, and orientation do not always communicate attraction or liking should be considered in future research involving these nonverbal behaviors, as well as in research on intimacy-equilibriums (Argyle & Dean, 1965) or compensation (Patterson, 1973) in dyadic interactions. The failure to confirm predictions from SLT may be related to conceptual ambiguities (e.g., the role of reinforcement value) which limit the usefulness of SLT concepts in understanding proxemic and other nonverbal behaviors

The new course at Muresk Agricultural College

THE original aim of all the agricultural colleges in Australia was to train young men to be farmers. Over the years, and particularly in recent years, the colleges in the Eastern States found that less and less of their students were coming from the farming community, and a diminishing number were returning to farming