4,838 research outputs found
The state of resource taxation in Australia: 'An inexcusable folly for the nation'?
No full textThis article discusses the principal claims made for the Resource Rent Tax (RRT) by Garnaut and Clunies‐Ross (1975, 1979) relating to its efficiency and potential for generating tax revenue relative to other forms of resource taxation, and also their concern about the greater uncertainty of these revenues. An analysis of the risk‐return trade‐off associated with a shift from ad valorem royalties to an RRT finds this shift to be worthwhile. Estimates are also provided of the foregone tax revenue from the North West Shelf associated with the use of ad valorem royalties rather than the RRT.Resource /Energy Economics and Policy,
Sharing the RM Toolkit: Panel presentation at Association of Canadian Archivists (video)
No full textThis is the rehearsal presentation for a 2016 panel at the Association of Canadian Archivists in Montreal. This item includes a video with closed captioning and a transcript. The actual panel presentation was given on June 2nd, 2016
The 2D/3D dynamics of wall-bounded low-Rm magnetohydrodynamic (MHD) turbulence
No full textWith this experimental study, we give evidence that the dynamics of low-Rm MHD turbulence depends on the diffusion length l_z, which corresponds to the distance over which the Lorentz force is able to diffuse momentum before it is balanced by inertia
Distinguishing truthful from invented accounts using reality monitoring criteria
No full textPurpose. Previous research has suggested that true and invented memories can be distinguished between using the reality monitoring criteria. Two different coding schemes were used to examine the correct classification of reports as truthful or deceptive on the basis of individual reality-monitoring (RM) criteria. Method. Drawing upon the RM framework the present experiment examined transcripts of verbal accounts of eyewitnesses to a staged event or made up details about the incident. The statements were elicited during a face-to-face cognitive interview (CI) and were analysed by coders trained in the identification of criteria indicative of self-experienced and invented accounts (referred to here as Version 1) and a similar coding method (referred to here as Version 2). Results. A distinction was made between 'external memories' (affective, perceptual, and contextual details) and 'internal' memories (cognitive operations). For Version 1, the results indicated a higher number of contextual and external details in the descriptions of experienced events and as is commonly found in the deception literature, truthful accounts were longer. For Version 2, temporal and auditory details were more frequent in true accounts. Contrary to prediction, there were also more references to cognitive operations in true accounts. Conclusions. Any forensic application of RM should consider how external factors (characteristics of the event, motivation to deceive, and questioning style) influence the presence of RM criteria. © 2010 The British Psychological Society
Triangular Constellations in Flows
No full textParticles advected on the surface of a fluid can exhibit fractal clustering. The local structure of a fractal set is described by its dimension , which is the exponent of a power-law relating the mass in a ball to its radius : . It is desirable to characterise the {\em shapes} of constellations of points sampling a fractal measure, as well as their masses. The simplest example is the distribution of shapes of triangles formed by triplets of points, which we investigate for fractals generated by chaotic dynamical systems. The most significant parameter describing the triangle shape is the ratio of its area to the radius of gyration squared. We show that the probability density of has a phase transition: is independent of and approximately uniform below a critical flow compressibility , which we estimate. For the distribution appears to be described by two power laws: when , and when
Defect and deformation studies in transition metal trialuminide compounds
No full textDefect studies have been performed on the intermetallic compounds \rm Al\sb3Ti, \rm Al\sb3V and \rm Al\sb{67}Ni\sb8Ti\sb{25} which were deformed at elevated temperatures. Test materials were prepared via the rapid solidification route. TEM characterizations indicated that the microstructure of the asatomized Al-25at.%Ti alloy powder consisted of primary dendrites of the \rm Al\sb3Ti phase (DO\sb{22} structure) and -aluminum. The as-atomized Al-25at.%V alloy exhibited a microstructure composed of primary \rm Al\sb8V\sb5 dendrites with interdendritic \rm Al\sb3V (DO\sb{22}) and -aluminum. The Al-8at.%Ni-25at.% Ti alloy exhibited dendrites of \rm Al\sb{67}Ni\sb8Ti\sb{25}(L1\sb2) and small \rm Al\sb3Ni\sb2 particles.The consolidated Al-25at.%Ti alloy contained \rm Al\sb3Ti with numerous small particles. Three types of second phases were noted: TiAl particles, oxide streamers at prior particle boundaries; and small TiC particles within certain grains. In the consolidated Al-25at.%V powder, large \rm Al\sb8V\sb5 particles were identified within a matrix of \rm Al\sb3V. The Al-8at.%Ni-25at.%Ti alloy contained \rm Al\sb2NiTi particles (fcc, a\sb0 = 11.94A) in a matrix of \rm Al\sb{67}Ni\sb8Ti\sb{25}.Compression testing was carried out at 300\sp\circC, 600\sp\circC and 800\sp\circC. The weak-beam darkfield technique was employed to determine the Burgers vector, slip plane and dissociation reactions of dislocations responsible for plastic deformation.In \rm Al\sb3Ti, microtwins on the close packed planes formed by the repeated passage of 1/6 111) partial dislocations on successive planes were identified. Partial dislocations with b = 1/2 110) which bound APB's on the (001) plane were also characterized at 300\sp\circC and 600\sp\circC. Dislocations with b = 100) were found to glide on (001) and shown to climb at the higher temperatures (600\sp\circC). \rm Al\sb3V appears to deform by glide of b = 110) dislocation son the planes. At 800\sp\circC, again climbing 100) dislocations were found. In \rm Al\sb{67}Ni\sb8Ti\sb{25}, dislocation glide of the type was identified. At 300\sp\circC, the dislocations were undissociated, while at 600\sp\circC and 800\sp\circC, considerable APB-type dissociation on the planes was noted.Defect structures in the two DO\sb{22} compounds have been explained using a new model of accounting for energies related to the dissociated configurations. This model relies on quantum mechanical calculations for total crystal energies of various other crystal structures, similar to DO\sb{22}, which are present locally within the faulted region of the dissociated dislocations. A possible extrapolation to the case of \rm L1\sb2 compounds is also given.Made available in DSpace on 2011-05-07T13:40:54Z (GMT). No. of bitstreams: 2
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Exact two-dimensionalization of low-magnetic-Reynolds-number flows subject to a strong magnetic field
No full textWe investigate the behavior of flows, including turbulent flows, driven by a horizontal body-force and subject to a vertical magnetic field, with the following question in mind: for very strong applied magnetic field, is the flow mostly two-dimensional, with remaining weak three-dimensional fluctuations, or does it become exactly 2D, with no dependence along the vertical? We restrict attention to low-magnetic-Reynolds number (Rm) flow. Because liquid metals have low magnetic Prandtl number, such low- flows can have a kinetic Reynolds number as large as one million and therefore be strongly turbulent. We first focus on the quasi-static approximation, i.e. the asymptotic limit of vanishing magnetic Reynolds number Rm << 1: we prove that the flow becomes exactly 2D asymptotically in time, regardless of the initial condition and provided the interaction parameter N is larger than a threshold value. We call this property absolute two-dimensionalization: the attractor of the system is necessarily a (possibly turbulent) 2D flow. We then consider the full-magnetohydrodynamic equations and we prove that, for low enough Rm and large enough N, the flow becomes exactly two-dimensional in the long-time limit provided the initial vertically-dependent perturbations are infinitesimal. We call this phenomenon linear two-dimensionalization: the (possibly turbulent) 2D flow is an attractor of the dynamics, but it is not necessarily the only attractor of the system. Some 3D attractors may also exist and be attained for strong enough initial 3D perturbations. These results shed some light on the existence of a dissipative anomaly for magnetohydrodynamic flows subject to a strong external magnetic field
The Decay of Wall Bounded MHD Turbulence at Low RM
No full textWe have developed a new spectral method to simulate flows with very fine boundary layers present. We apply it to calculate the evolution of freely decaying MHD turbulence between isolating walls. By comparison them with results obtained in fully periodic domain we quantify the influence of the channel walls on the character of freely decaying MHD turbulence
Systematic review: efficacy and safety of rituximab for adults with idiopathic thrombocytopenic purpura.
No full textProfessional Learning and Development for Older workers: a study of one UK Higher education institution
No full textExtended working lives will affect us all. The lifting of the default retirement age (DFA) in the UK, rising life expectancy and increasing numbers of older workers
(ONS 2013), spotlights the place of older workers, their engagement and professional learning needs.
This empirical research aims to answer the value of professional development and learning to older workers and to management in the higher education workplace. It
explores understandings of older workers in professional roles in a higher education institution, their perspectives of professional development and learning, together with those of management. This research concerns professional learning at a microorganizational
level to inform at a macro-organizational level in an adult workplace setting. The research is located within adult professional development and learning
literature but is also connected to related workplace learning theories.
The research focus is on understanding what older workers and management see as valuable professional development and learning in a higher education (HE) case
study in England. Pragmatic in approach, it emphasises high performance. It considers older workers wish to do their best in their work and management want the
best from their workers. The research questions consider:
- What professional development do older workers see as valuable in the HE case study?
- What professional development does management see as valuable for older
workers in the HE case study?
- How might any differing views on what professional development should be
offered, be reconciled
- …
