3,020 research outputs found
Reconciliation, trauma and the native born
How should non-Indigenous Australians
reconcile with Indigenous people? The
Aboriginal Reconciliation Council
urges newcomers to view the land through
the eyes of the Indigenous owners.
Keith Windschuttle insists that the narrative
of frontier violence has been greatly
exaggerated. Mainstream country musicians
reconcile their place in Australia by a kind of
belonging-in-parallel justified by hard rural
work while Indigenous musicians more
commonly celebrate what can be celebrated,
and set aside the rest.
Do we need a knowledge of inter-racial
history for genuine reconciliation
Exploring the Venus global super-rotation using a comprehensive General Circulation Model
The atmospheric circulation in Venus is well known to exhibit strong
super-rotation. However, the atmospheric mechanisms responsible for the
formation of this super-rotation are still not fully understood. In this work,
we developed a new Venus general circulation model to study the most likely
mechanisms driving the atmosphere to the current observed circulation. Our
model includes a new radiative transfer, convection and suitably adapted
boundary layer schemes and a dynamical core that takes into account the
dependence of the heat capacity at constant pressure with temperature.
The new Venus model is able to simulate a super-rotation phenomenon in the
cloud region quantitatively similar to the one observed. The mechanisms
maintaining the strong winds in the cloud region were found in the model
results to be a combination of zonal mean circulation, thermal tides and
transient waves. In this process, the semi-diurnal tide excited in the upper
clouds has a key contribution in transporting axial angular momentum mainly
from the upper atmosphere towards the cloud region. The magnitude of the
super-rotation in the cloud region is sensitive to various radiative parameters
such as the amount of solar radiative energy absorbed by the surface, which
controls the static stability near the surface. In this work, we also discuss
the main difficulties in representing the flow below the cloud base in Venus
atmospheric models.
Our new radiative scheme is more suitable for 3D Venus climate models than
those used in previous work due to its easy adaptability to different
atmospheric conditions. This flexibility of the model was crucial to explore
the uncertainties in the lower atmospheric conditions and may also be used in
the future to explore, for example, dynamical-radiative-microphysical
feedbacks.Comment: Accepted for publication in Planet. Space Sc
Operator algebras with contractive approximate identities II
We make several contributions to our recent program investigating structural
properties of algebras of operators on a Hilbert space. For example, we make
substantial contributions to the noncommutative peak interpolation program
begun by Hay and the first author, Hay and Neal. Another sample result: an
operator algebra has a contractive approximate identity iff the linear span of
the elements with positive real part is dense. We also extend the theory of
compact projections to the most general case. Despite the title, our algebras
are often allowed to have no approximate identity.Comment: 18 pages. To appear J. Functional Analysi
Monte Carlo Planning method estimates planning horizons during interactive social exchange
Reciprocating interactions represent a central feature of all human
exchanges. They have been the target of various recent experiments, with
healthy participants and psychiatric populations engaging as dyads in
multi-round exchanges such as a repeated trust task. Behaviour in such
exchanges involves complexities related to each agent's preference for equity
with their partner, beliefs about the partner's appetite for equity, beliefs
about the partner's model of their partner, and so on. Agents may also plan
different numbers of steps into the future. Providing a computationally precise
account of the behaviour is an essential step towards understanding what
underlies choices. A natural framework for this is that of an interactive
partially observable Markov decision process (IPOMDP). However, the various
complexities make IPOMDPs inordinately computationally challenging. Here, we
show how to approximate the solution for the multi-round trust task using a
variant of the Monte-Carlo tree search algorithm. We demonstrate that the
algorithm is efficient and effective, and therefore can be used to invert
observations of behavioural choices. We use generated behaviour to elucidate
the richness and sophistication of interactive inference
The Truth That Will Set Us All Free: An Uncertain History of Memorials to Indigenous Australians
Aborigines and other Australians have not met with amity. Memorials to the Aboriginal people of Australia are not common and some of the more prominent are regularly damaged. Eddies of past tempests slap disturbingly at modern day memorials thousands of kilometres and several generations removed from the eye of furious storms. This article traces a difficult story of what seems at first sight to be blind racism, at a second sight, a rampant colonialism, and at a more reflective third, perhaps, the economy of the pastoralist and the farmer in deadly disharmony to that of the hunter gatherer. Whatever the origins, the consequences of conflict endure for centuries
Reanimating Lost Landscapes: Bringing Visualisation to Aboriginal History
In Public History Review volume 11, Peter Osborne called for the methodologies of environmental history to be brought more securely and more imaginatively into public history. Environmental history by its own definition, he argued, encompassed Indigenous, ethnic and Anglo-Celtic histories, and heritages natural and built, material and intangible. I believe too that we public historians need to Incorporate changing landscapes and topographies as a vital element in understanding why communities and their built heritages constantly transfigure. Sometimes a single geographic factor such as the northern Gulf Stream can go far to explain the spectacular rise of a small island like Great Britain to world power. Equally we can help to explain the precipitous decline of towns like Bourke by degradation and siltation in the Darling River.
This paper uses the case study of the Narrabeen town camp to explore the potential of digital visual technologies in Aboriginal History
And the Dead Remain Behind
In most cultures the dead and their living relatives are held in a dialogic relationship. The dead have made it clear, while living, what they expect from their descendants. The living, for their part, wish to honour the tombs of their ancestors; at the least, to keep the graves of the recent dead from disrepair. Despite the strictures, the living can fail their responsibilities, for example, by migration to foreign countries. The peripatetic Chinese are one of the few cultures able to overcome the dilemma of the wanderer or the exile. With the help of a priest, an Australian Chinese migrant may summon the soul of an ancestor from an Asian grave to a Melbourne temple, where the spirit, though removed from its earthly vessel, will rest and remain at peace. Amongst cultures in which such practices are not culturally appropriate, to fail to honour the family dead can be exquisitely painful. Violence is the cause of most failure
A “Funa” in Australia?
A Funa in Chile is a public denunciation of a person identified as associated with crimes against humanity during the Pinochet regime. It begins as a web site notice of a planned procession, to be followed by a peaceful rally and demonstration, Some involve no more than thirty people, others, particularly those directed at notorious figures, have attracted thousands. My questions are: What is the effect of Funas in Chile?Could a Funa occur in Australia? Against whom? Who would organise it? For what reason? What would be the consequences? In discussing the question I will draw upon my recent work in reconciliation studies both in Chile and Aboriginal Australia
Direct Numerical Simulation of structural vacillation in the transition to geostrophic turbulence
The onset of small-scale fluctuations around a steady convection pattern in a
rotating baroclinic annulus filled with air is investigated using Direct
Numerical Simulation. In previous laboratory experiments of baroclinic waves,
such fluctuations have been associated with a flow regime termed Structural
Vacillation which is regarded as the first step in the transition to
fully-developed geostrophic turbulence.Comment: 6 page
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