The Hudson Laboratories microbarograph system: Results and future trends

The ultralow frequency microbarograph system is described, and some results for periods ranging from a few minutes to a few hours are presented. Problems encountered during operation of the system are also discussed

Cursed to the Trees, Enchanted by the Woods: Sweeney Astray

Drawing on Jane Bennett’s theory of “crossings and enchantment”, this essay considers interspecies transformations in Seamus Heaney’s Sweeney Astray (1983). As a bird-man, Mad King Sweeney discovers that the arboreal environment is a vibrantly interstitial space in which paganism and Christianity coexist. By negotiating this liminal space, he opens himself to forms of attachment and enchantment that radically ameliorate his accursed existence in the trees

A vision of Ireland, 1967: John Montague’s aisling ghéar

More than fifty years after its publication as a broadsheet ballad, John Montague’s “The Rape of the Aisling” (1967) retains its satirical force. Whilst not the first instance in Irish writing to acknowledge sexual abuse of young people by priests (two years earlier John McGahern’s The Dark had been banned partly on the grounds of its rendering of clerical malfeasance), Montague’s rough ballad nonetheless places sexual abuse at the very heart of its assault on the Catholic Church’s baleful influence on a society on the cusp of dramatic social change. By adopting, and radically adapting, that most malleable of literary forms – the aisling or dream-vision poem – Montague seems to suggest that in mid-twentieth-century Ireland it is not the “Saxon occupier” who poses a risk to Republican ideals. Now, it is members of a home-grown patriarchy, the “access-all-areas men in black” who abuse and rape children and young people in their care, who seek to compromise the Proclamation’s promise to cherish “all of the children of the nation equally”

Characteristics of Creativity in Relation to Auditors' Recognition of Fraud Cues and Response to Perceived Fraud Risk

The research examines whether differences in scores for each of four recognized domains of creativity (assessed with standardized scales measuring workplace support of creativity, personality, degree of creative ideation, and learning style) are associated with auditors' recognition of fraud cues embedded in an audit narrative and, then, audit plan changes in response to auditors' perceived fraud risk from reading that same audit narrative. Findings suggest a significantly positive relationship between recognition of fraud cues and auditors' 1) personal commitment to work/employer, 2) creative ideation, and, 3) tolerance of ambiguity - and a negative relationship with auditors' 1) preference for order, and 2) close-mindedness. Similarly, a significantly positive relationship was found between responses to perceived fraud risk and auditors' 1) personal commitment to work/employer, and 2) creative ideation - but a negative relationship with auditors' scores for 1) close-mindedness, and 2) planning style of thinking. Consequently, auditors who viewed their work as more than merely a job, were generally more creative in simple everyday ways, and were not so rigid in their thinking or the way they processed information were significantly better at both recognizing fraud cues and responding to fraud risks - as creativity theory would suggest.The research used seventy-three practicing auditors as subjects to mitigate external validity problems. Findings provide an important theoretical extension of prior SAS no. 99 research, which focused only on brainstorming and analytical reasoning (two common tools to elicit creative behavior) - as well as significant practical benefits for the auditing profession in terms of auditor selection, assignment, and training.School of Accountin

Polarization Gradient Study of Interstellar Medium Turbulence Using The Canadian Galactic Plane Survey

We have investigated the magneto-ionic turbulence in the interstellar medium through spatial gradients of the complex radio polarization vector in the Canadian Galactic Plane Survey (CGPS). The CGPS data cover 1300 square-degrees, over the range ${53^{\circ}}\leq{\ell}\leq{192^{\circ}}$, ${-3^{\circ}}\leq{b}\leq{5^{\circ}}$ with an extension to ${b}={17.5^{\circ}}$ in the range ${101^{\circ}}\leq{\ell}\leq{116^{\circ}}$, and arcminute resolution at 1420 MHz. Previous studies found a correlation between the skewness and kurtosis of the polarization gradient and the Mach number of the turbulence, or assumed this correlation to deduce the Mach number of an observed turbulent region. We present polarization gradient images of the entire CGPS dataset, and analyze the dependence of these images on angular resolution. The polarization gradients are filamentary, and the length of these filaments is largest towards the Galactic anti-center, and smallest towards the inner Galaxy. This may imply that small-scale turbulence is stronger in the inner Galaxy, or that we observe more distant features at low Galactic longitudes. For every resolution studied, the skewness of the polarization gradient is influenced by the edges of bright polarization gradient regions, which are not related to the turbulence revealed by the polarization gradients. We also find that the skewness of the polarization gradient is sensitive to the size of the box used to calculate the skewness, but insensitive to Galactic longitude, implying that the skewness only probes the number and magnitude of the inhomogeneities within the box. We conclude that the skewness and kurtosis of the polarization gradient are not ideal statistics for probing natural magneto-ionic turbulence.Comment: 21 pages, 15 figures, accepted by Ap

Advanced Diagnostics for the Study of Linearly Polarized Emission. II: Application to Diffuse Interstellar Radio Synchrotron Emission

Diagnostics of polarized emission provide us with valuable information on the Galactic magnetic field and the state of turbulence in the interstellar medium, which cannot be obtained from synchrotron intensity alone. In Paper I (Herron et al. 2017b), we derived polarization diagnostics that are rotationally and translationally invariant in the $Q$-$U$ plane, similar to the polarization gradient. In this paper, we apply these diagnostics to simulations of ideal magnetohydrodynamic turbulence that have a range of sonic and Alfv\'enic Mach numbers. We generate synthetic images of Stokes $Q$ and $U$ for these simulations, for the cases where the turbulence is illuminated from behind by uniform polarized emission, and where the polarized emission originates from within the turbulent volume. From these simulated images we calculate the polarization diagnostics derived in Paper I, for different lines of sight relative to the mean magnetic field, and for a range of frequencies. For all of our simulations, we find that the polarization gradient is very similar to the generalized polarization gradient, and that both trace spatial variations in the magnetoionic medium for the case where emission originates within the turbulent volume, provided that the medium is not supersonic. We propose a method for distinguishing the cases of emission coming from behind or within a turbulent, Faraday rotating medium, and a method to partly map the rotation measure of the observed region. We also speculate on statistics of these diagnostics that may allow us to constrain the physical properties of an observed turbulent region.Comment: 34 pages, 25 figures, accepted for publication in Ap

Midlatitude, Rayleigh-Mie-Raman Lidar for Observations from 15 to 120 km

Rayleigh lidar opened a portion of the atmosphere, from 30 to 90 km, to ground-based observations. Rayleigh-scatter observations were made at the Atmospheric Lidar Observatory (ALO) at Utah State University (USU) from 1993–2004 between 45 and 90 km. The lidar consisted of a 0.44-m diameter mirror, a frequency-doubled Nd:YAG laser opera\u27ng at 532-nm at 30- Hz at either 18- or 24-W, giving power- aperture products (PAPs) of 2.7- or 3.6- Wm2, respec\u27vely, and one detector channel. An example of what was accomplished with this system is shown as part of Fig. 1. The temperature climatology was based on ~5000 hours of observa\u27ons carried out over ~900 nights. The temperatures, with 3-km al\u27tude resolu\u27on, were averaged over periods of 31 days by 11 years. The ALO Rayleigh lidar is currently being upgraded, as indicated, as indicated in Fig. 1, to extend observations upward into the lower thermosphere and downward to the lower stratosphere

Mid-Latiude Rayleigh-Mie-Raman Lidar for Observations from 15 to 120 km

Rayleigh lidar opened a portion of the atmosphere, from 30 to 90 km, to ground-based observations. Rayleigh-scatter observations were made at the Atmospheric Lidar Observatory (ALO) at Utah State University (USU) from 1993–2004 between 45 and 90 km. The lidar consisted of a 0.44-m diameter mirror, a frequency-doubled Nd:YAG laser opera\u27ng at 532-nm at 30- Hz at either 18- or 24-W, giving power- aperture products (PAPs) of 2.7- or 3.6- Wm2, respec\u27vely, and one detector channel. An example of what was accomplished with this system is shown as part of Fig. 1. The temperature climatology was based on ~5000 hours of observa\u27ons carried out over ~900 nights. The temperatures, with 3-km al\u27tude resolu\u27on, were averaged over periods of 31 days by 11 years. The ALO Rayleigh lidar is currently being upgraded, as indicated, as indicated in Fig. 1, to extend observations upward into the lower thermosphere and downward to the lower stratosphere