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Articles 14041 - 14070 of 14367

Full-Text Articles in Social and Behavioral Sciences

Severe Maternal Psychopathology And Infant-Mother Attachment, A E. Hipwell, Frits Goossens, Edward Melhuish, R Kumar Jan 2000

Severe Maternal Psychopathology And Infant-Mother Attachment, A E. Hipwell, Frits Goossens, Edward Melhuish, R Kumar

Faculty of Social Sciences - Papers (Archive)

Eighty-two mother-infant dyads, comprising women with psychiatric disorder and individually matched controls, were followed up over the children's 1st year of life. The mothers with mental illness consisted of two subgroups: first, 25 severely mentally ill mothers who had been admitted to a psychiatric unit with their infants; and second, 16 mothers from a community sample meeting research diagnostic criteria for unipolar, nonpsychotic depression. With the exception of six dyads in the in-patient group, observations were made of the mother-infant interaction and the quality of the infant-mother attachment relationship at 12 months. The nature and course of the mothers' illness …

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Developments In Blast Furnace Process Control At Port Kembla Based On Process Fundamentals, Robert Nightingale, Rian Dippenaar, Wei-Kao Lu Jan 2000

Developments In Blast Furnace Process Control At Port Kembla Based On Process Fundamentals, Robert Nightingale, Rian Dippenaar, Wei-Kao Lu

Faculty of Engineering and Information Sciences - Papers: Part A

This article is based on a presentation made in the "Geoffrey Belton Memorial Symposium," held in January 2000, in Sydney, Australia, under the joint sponsorship of ISS and TMS.

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The C*-Algebras Of Row-Finite Graphs, Teresa Bates, David Pask, Iain Raeburn, Wojciech Szymanski Jan 2000

The C*-Algebras Of Row-Finite Graphs, Teresa Bates, David Pask, Iain Raeburn, Wojciech Szymanski

Faculty of Engineering and Information Sciences - Papers: Part A

We prove versions of the fundamental theorems about Cuntz-Krieger algebras for the C*-algebras of row-finite graphs: directed graphs in which each vertex emits at most finitely many edges. Special cases of these results have previously been obtained using various powerful machines; our main point is that direct methods yield sharper results more easily.

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Non-Gravitational Heating In The Hierarchical Formation Of X-Ray Clusters, K K S Wu, A C. Fabian, Paul E J Nulsen Jan 2000

Non-Gravitational Heating In The Hierarchical Formation Of X-Ray Clusters, K K S Wu, A C. Fabian, Paul E J Nulsen

Faculty of Engineering and Information Sciences - Papers: Part A

The strong deviation in the properties of X-ray clusters from simple scaling laws highlights the importance of non-gravitational heating and cooling processes in the evolution of protocluster gas. We investigate this from two directions: by finding the amount of ‘excess energy’ required in intracluster gas in order to reproduce the observed X-ray cluster properties, and by studying the excess energies obtained from supernovae in a semi-analytic model of galaxy formation. Using the insights obtained from the model, we then critically discuss possible ways of achieving the high excess specific energies required in clusters. These include heating by supernovae and active …

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The C*-Algebras Of Infinite Graphs, Neal J. Fowler, Marcelo Laca, Iain Raeburn Jan 2000

The C*-Algebras Of Infinite Graphs, Neal J. Fowler, Marcelo Laca, Iain Raeburn

Faculty of Engineering and Information Sciences - Papers: Part A

We associate C*-algebras to infinite directed graphs that are not necessarily locally finite. By realizing these algebras as Cuntz-Krieger algebras in the sense of Exel and Laca, we are able to give criteria for their uniqueness and simplicity, generalizing results of Kumjian, Pask, Raeburn, and Renault for locally finite directed graphs.

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An Equivariant Brauer Semigroup And The Symmetric Imprimitivity Theorem, Astrid An Huef, Iain Raeburn, Dana Williams Jan 2000

An Equivariant Brauer Semigroup And The Symmetric Imprimitivity Theorem, Astrid An Huef, Iain Raeburn, Dana Williams

Faculty of Engineering and Information Sciences - Papers: Part A

No abstract provided.

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Integer-Modulated Filter Banks Providing Perfect Reconstruction, Alfred Mertins, Tanja Karp, Jorg Kliewer Jan 2000

Integer-Modulated Filter Banks Providing Perfect Reconstruction, Alfred Mertins, Tanja Karp, Jorg Kliewer

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, we extend the perfect reconstruction conditions known for cosine modulation to other, more general modulation schemes. The modified PR conditions provide additional degrees of freedom which can be utilized to design integer-modulated filter banks. Techniques for the design of prototypes and modulation sequences are presented.

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Network Reconfiguration For Enhancement Of Voltage Stability In Distribution Networks, Kashem M. Muttaqi, Velappa Ganapathy, G G. Jasmon Jan 2000

Network Reconfiguration For Enhancement Of Voltage Stability In Distribution Networks, Kashem M. Muttaqi, Velappa Ganapathy, G G. Jasmon

Faculty of Engineering and Information Sciences - Papers: Part A

Network reconfiguration is performed by altering the topological structure of distribution feeders. By reconfiguring the network, voltage stability can be maximised for a particular set of loads in distribution systems. A new algorithm is formulated for enhancement of voltage stability by network reconfiguration. Initially, a certain number of switching combinations is generated using the combination of tie and its two neighbouring switches, and the best combination of switches for maximising the voltage stability in the network among them is determined. Then the search is extended by considering the branches next to the open-branches of the best configuration one by one …

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Naturality And Induced Representations, Siegfried Echterhoff, S Kaliszewski, John Quigg, Iain Raeburn Jan 2000

Naturality And Induced Representations, Siegfried Echterhoff, S Kaliszewski, John Quigg, Iain Raeburn

Faculty of Engineering and Information Sciences - Papers: Part A

We show that induction of covariant representations for C*-dynamical systems is natural in the sense that it gives a natural transformation between certain crossed-product functors. This involves setting up suitable categories of C*-algebras and dynamical systems, and extending the usual constructions of crossed products to define the appropriate functors. From this point of view, Green's Imprimitivity Theorem identifies the functors for which induction is a natural equivalence. Various special cases of these results have previously been obtained on an ad hoc basis.

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The Method Of Generalised Conditional Symmetries And Its Various Implementations, Joanna Goard Jan 2000

The Method Of Generalised Conditional Symmetries And Its Various Implementations, Joanna Goard

Faculty of Engineering and Information Sciences - Papers: Part A

We relate Kaptsov's method of B-determining equations for finding invariant solutions of PDEs to the nonclassical method and to the method of generalised conditional symmetries. An extension of Kaptsov's method is then used to find new solutions of degenerate diffusion equations.

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Disrupting The Center: Interrogating An ‘Asian Feminist’ Identity, Lenore T. Lyons Jan 2000

Disrupting The Center: Interrogating An ‘Asian Feminist’ Identity, Lenore T. Lyons

Faculty of Arts - Papers (Archive)

The problem of ‘difference’ has emerged as a significant issue in western feminist theory making during the past two decades. In response to claims that mainstream feminism has ignored the lives and voices of third world women and women of colour, attention has increasingly been placed on the ways in which class and ‘race’ intersect in the everyday lived experiences of women. This work has sought to displace the hegemonic control of white, western women in the production of feminist knowledge. Despite a growing body of literature on women’s movements throughout the Asian region, however, common-sense perceptions of Asian ‘submissiveness’ …

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Home Invasion: Television, Identity And Belonging In Sydney's Western Suburbs, Tanja Dreher Jan 2000

Home Invasion: Television, Identity And Belonging In Sydney's Western Suburbs, Tanja Dreher

Faculty of Arts - Papers (Archive)

Television occupies a central place in most Australian homes, and 'TV talk' is an important process in negotiations of individual and group identities (Gillespie. 1995). TV is the focus of many private, family interactions. As a 'window on the world', television is also a primary source of information about public life. Thus TV is deeply implicated both in interactions within the home, and in our understandings of the wider 'home' of the nation. This paper draws on discussions with diverse community groups in and around Cabramatta to explore the crucial role of TV in negotiations of 'home' and 'belonging' in …

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Positionally Dependent 15n Fractionation Factors In The Uv Photolysis Of N2o Determined By High Resolution Ftir Spectroscopy, Fred Turatti, D W. T Griffith, Stephen Wilson, Michael Esler, T Rahn, H Zang, G A. Blake Jan 2000

Positionally Dependent 15n Fractionation Factors In The Uv Photolysis Of N2o Determined By High Resolution Ftir Spectroscopy, Fred Turatti, D W. T Griffith, Stephen Wilson, Michael Esler, T Rahn, H Zang, G A. Blake

Faculty of Science, Medicine and Health - Papers: part A

Positionally dependent fractionation factors for the photolysis of isotopomers of N2O in natural abundance have been determined by high resolution FTIR spectroscopy at three photolysis wavelengths. Fractionation factors show clear 15N position and photolysis wavelength dependence and are in qualitative agreement with theoretical models but are twice as large. The fractionation factors increase with photolysis wavelength from 193 to 211 nm, with the fractionation factors at 207.6 nm for 14N15N16O, 15N14N16O and 14N14N18O equal to −66.5±5‰,−27.1±6‰ and −49±10‰, respectively.

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(De)Constructing The Interview: A Critique Of The Participatory Method, Lenore T. Lyons, J. Chipperfield Jan 2000

(De)Constructing The Interview: A Critique Of The Participatory Method, Lenore T. Lyons, J. Chipperfield

Faculty of Arts - Papers (Archive)

Feminist approaches to the use of interviewing emphasise the importance of building rapport with respondents in order to achieve a successful research outcome. This ‘participatory model’ is concerned with addressing power differentials between researcher and researched and thus producing non-hierarchical, non-manipulative research relationships. We argue that the continued centring of rapport as a key interview strategy ignores both the nature of power relationships within the interview, as well as interviewee subjectivity. Drawing on our own experiences of interviewing we examine the ways in which both interviewer and interviewee are placed along intersecting axes of power. An analysis of the complex …

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The Environmental Crisis And The Accounting Craft, Jane Andrew Jan 2000

The Environmental Crisis And The Accounting Craft, Jane Andrew

Faculty of Commerce - Papers (Archive)

If the purpose of environmental accounting research is to develop, suggest ad analyse ways out fo the environmental crisis, then it is fundamental that the ethical positions informing our research are developed and explored fully before we make choices about the path and direction of our own work. This paper reviews two alternative approaches to environmental ethics, namely, radical ecology (of which deep ecology, social ecology and eco-feminism are regarded as sub-divisions) and the emerging area of postmodern environmentalism. The aim is to encourage environmental accounting researchers to consider and explicitly state the ethical position adopted within their work.

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Use Of Self-Report To Monitor Overweight And Obesity In Populations: Some Issues For Consideration, Victoria M. Flood, Karen Webb, Ross Lazarus, Glen Pang Jan 2000

Use Of Self-Report To Monitor Overweight And Obesity In Populations: Some Issues For Consideration, Victoria M. Flood, Karen Webb, Ross Lazarus, Glen Pang

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objective: To examine the validity of self reported height and weight data reported over the telephone in the 1997 NSW Health Survey, and to determine its accuracy to monitor overweight and obesity in population surveys. Method: Self-reported and measured heights and weights were collected from 227 people living in Western Sydney, who had participated in the NSW Health Survey 1997. Results: Self-reported (SR) weights and heights led to misclassification of relative weight status. BMI, based on measured weights and heights, classified 62% of males and 47% of females as overweight or obese, compared with 39% and 32%, respectively, from self-report. …

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Book Review, Richard Utz And Tom Shippey (Eds), Medievalism And The Modern World: Essays In Honour Of Leslie Workman, Louise D'Arcens Jan 2000

Book Review, Richard Utz And Tom Shippey (Eds), Medievalism And The Modern World: Essays In Honour Of Leslie Workman, Louise D'Arcens

Faculty of Arts - Papers (Archive)

As an area of enquiry, the academic study of medievalism has seemed constitutionally, and indeed institutionally, marginal. Neither fish nor fowl, its interdisciplinarity has long consigned it in the eyes of many medievalists to the shadowy realm of para-disciplinarity, seemingly doomed to the task of merely commenting on the work of others. In recent years, however, Anglophone medieval studies has witnessed the growing momentum of what might be called a "medievalist turn". The emergence of numerous studies of the historical and political forces buttressing the emergence of the discipline, along with the biographical studies of Helen Damico and Norman Cantor, …

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Book Review: The Nation's Diet: The Social Science Of Food Choice, Linda C. Tapsell Jan 2000

Book Review: The Nation's Diet: The Social Science Of Food Choice, Linda C. Tapsell

Faculty of Health and Behavioural Sciences - Papers (Archive)

No abstract provided.

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A New Early Devonian Operculate Tetracoral Genus From Eastern Australia, Anthony J. Wright Jan 2000

A New Early Devonian Operculate Tetracoral Genus From Eastern Australia, Anthony J. Wright

Faculty of Science, Medicine and Health - Papers: part A

Chakeola, a solitary latest Lochkovian to late Emsian (Early Devonian) new genus of the operculate tetracoral family Calceolidae, is characterised by: opercular septa that are present from adjacent to the median septum to the lateral extremities of the operculum; a lack of rootlets on the counter face of the corallite; a weak counter opercular face in mature specimens; and eccentric growth increments on the external opercular surface. The type species, C. johnsoni new species, is described from latest Lochkovian pesavis Zone), early Pragian (suleatus Zone) and late Pragian (pireneae Zone) strata of the Garra Formation, Wellington, NSW. C. whitehollsei new …

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Sweating In Extreme Environments: Heat Loss, Heat Adaptation, Body-Fluid Distribution And Thermal Strain, Nigel Taylor Jan 2000

Sweating In Extreme Environments: Heat Loss, Heat Adaptation, Body-Fluid Distribution And Thermal Strain, Nigel Taylor

Faculty of Science, Medicine and Health - Papers: part A

Evaporation is an extremely powerful cooling process. When totally evaporated from the skin surface, sweat can remove body heat at a rate of 2.43 kJ«g"\ Humans therefore control sweat secretion to maintain thermal homeostasis. Since humans are capable of extended sweat rates approximating 30 g'min"1, it is possible to remove heat at rates -73 kJ-min"1. Assuming a 20% efficiency, such heat loss will support a normothermic total energy use of 1520W. This equates with an external work rate of 304W, eliciting an oxygen consumption >3.5 /«min"1. However, while man has a great capacity to both work and dissipate metabolically-derived heat, …

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Thermal Sweating Following Spinal Cord Injury, Bradley Wilsmore, J D. Cotter, Andrea Macdonald, A. Zeyl, Guy M. Bashford, Nigel Taylor Jan 2000

Thermal Sweating Following Spinal Cord Injury, Bradley Wilsmore, J D. Cotter, Andrea Macdonald, A. Zeyl, Guy M. Bashford, Nigel Taylor

Faculty of Science, Medicine and Health - Papers: part A

A complete spinal cord injury prevents neural connections between distal sites and higher neural structures. While it has previously been demonstrated that an isolated spinal cord can elicit non-thermal sweating independently of the hypothalamus [1-3], the ability of the spinal cord to control sweating in response to thermal stimuli, without hypothalamic influence, is less clear. The majority of early literature indicates that thermal sweating is absent below a complete spinal cord injury (SCI) [4-7], yet several studies suggest otherwise [8-11]. However, invasive measures have failed to observe altered sympathetic activity when thermally stimulating insensate regions [12], which is inconsistent with …

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Coral Microatolls From The Central Pacific Record Late Holocene El Nino, Colin Woodroffe, Michael K. Gagan Jan 2000

Coral Microatolls From The Central Pacific Record Late Holocene El Nino, Colin Woodroffe, Michael K. Gagan

Faculty of Science, Medicine and Health - Papers: part A

Microatolls are discoid corals that have grown laterally because vertical growth is constrained by exposure at lowest tides. We demonstrate that a modern reef-flat Porites microatoll from Christmas (Kiritimati) Island preserves an oxygen isotope record of substantial sea surface temperature variations related to El Niño-Southern Oscillation (ENSO). We also show that a late Holocene fossil microatoll from the centre of the island contains interannual oxygen isotope variations over an approximate 20-year period. Three pronounced negative isotope anomalies attributed to warm El Niño events are superimposed on an annual cycle. El Niño events similar to those seen in recent decades appear …

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Clusterin Protein Diversity In The Primate Eye, Paul Wong, Bruce A. Pfeffer, Steven L. Bernstein, Michelle L. Chambers, Gerald J. Chader, Zahra F. Zakeri, Yan-Q Wu, Mark Wilson, S Patricia Becerra Jan 2000

Clusterin Protein Diversity In The Primate Eye, Paul Wong, Bruce A. Pfeffer, Steven L. Bernstein, Michelle L. Chambers, Gerald J. Chader, Zahra F. Zakeri, Yan-Q Wu, Mark Wilson, S Patricia Becerra

Faculty of Science, Medicine and Health - Papers: part A

Purpose: The clusterin gene encodes a multi-functional protein that has been identified in different tissues, including a number of different eye tissues, primarily in the mouse and to a much lesser extent in humans. Clusterin has been implicated in a number of cellular processes such as lipid transport, membrane integrity, apoptosis, and neurodegeneration, all of which could be important to the biology of the eye. In the current communication, we provide data that confirms the expression of clusterin in a number of different human eye tissues and establishes the expression profile of this gene in monkey derived eye tissues. The …

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Ventilatory Accommodation Of Oxygen Demand And Respiratory Water Loss In Kangaroos From Mesic And Arid Environments, The Eastern Grey Kangaroo (Macropus Giganteus) And The Red Kangaroo (Macropus Rufus), Terence J. Dawson, Adam J. Munn, Cyntina E. Blaney, Andrew Krockenberger, Shane K. Maloney Jan 2000

Ventilatory Accommodation Of Oxygen Demand And Respiratory Water Loss In Kangaroos From Mesic And Arid Environments, The Eastern Grey Kangaroo (Macropus Giganteus) And The Red Kangaroo (Macropus Rufus), Terence J. Dawson, Adam J. Munn, Cyntina E. Blaney, Andrew Krockenberger, Shane K. Maloney

Faculty of Science - Papers (Archive)

We studied ventilation in kangaroos from mesic and arid environments, the eastern grey kangaroo (Macropus giganteus) and the red kangaroo (Macropus rufus), respectively, within the range of ambient temperatures (T-a) from -5 degrees to 45 degrees C. At thermoneutral temperatures (T-a = 25 degrees C), there were no differences between the species in respiratory frequency, tidal volume, total ventilation, or oxygen extraction. The ventilatory patterns of the kangaroos were markedly different from those predicted from the allometric equation derived for placentals. The kangaroos had low respiratory frequencies and higher tidal volumes, even when adjustment was made for their lower basal …

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Deconstructing The Interaction Of Glu-Plasminogen With Its Receptor A-Enolase, N M. Andronicos, M S. Baker, M Lackmann, M Ranson Jan 2000

Deconstructing The Interaction Of Glu-Plasminogen With Its Receptor A-Enolase, N M. Andronicos, M S. Baker, M Lackmann, M Ranson

Faculty of Science - Papers (Archive)

No abstract provided.

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Nutrition, Health And Old Age: The Case Of Urban South African Elderly, Karen E. Charlton Jan 2000

Nutrition, Health And Old Age: The Case Of Urban South African Elderly, Karen E. Charlton

Faculty of Science, Medicine and Health - Papers: part A

The southern African region (Botswana, Lesotho, Namibia, South Africa, Swaziland, Mozambique and Zimbabwe) has the continent's highest percentage of older inhabitants; 6.2% of the population in 1997 was estimated to be 60 years or older. Within southern Africa, South Africa has the highest proportion of older population. The 1996 census data estimate that 2.8 million South Africans are aged 60 years and older, which constitutes 7% of the total population. This percentage is projected to increase to almost 11% of the population over the next 20 years. (Mostert W, Hofmeyr B, Oosthuizen K Demographic projections for South Africa. Pretoria: Human …

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Structured, Holistic Approach For Research Planning (Sharp), Karen E. Charlton, Marjanka Schmidt Jan 2000

Structured, Holistic Approach For Research Planning (Sharp), Karen E. Charlton, Marjanka Schmidt

Faculty of Science, Medicine and Health - Papers: part A

This paper looks at the use of the Structured, Holistic Approach for Research Planning. This method was followed by group members at the Urban Nutrition Action workshop. A report of the outcomes is presented.

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Clusterin Is A Secreted Mammalian Chaperone, M. R. Wilson, S. B. Easterbrook-Smith Jan 2000

Clusterin Is A Secreted Mammalian Chaperone, M. R. Wilson, S. B. Easterbrook-Smith

Faculty of Science - Papers (Archive)

[Extract] By any criteria, clusterin is an interesting protein. It was first described in 1983 as a secreted glycoprotein in ram rete testis fluid that enhanced aggregation (“clustering”) of a variety of cells in vitro 1. Many homologues in other species were subsequently discovered. Typically, each “discovery” of clusterin in a different species or by a different research group led to it being assigned another name. By the early 1990s clusterin was known under many aliases 2, some of which persist in the literature. However, the inaugural international workshop on clusterin (Cambridge, 1992) agreed to the name clusterin, in deference …

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Contribution To The Theory Of Scarpland Development From Observations In Central Queensland, Australia, R. W. Young, R. A. Wray Jan 2000

Contribution To The Theory Of Scarpland Development From Observations In Central Queensland, Australia, R. W. Young, R. A. Wray

Faculty of Science - Papers (Archive)

Theories of scarpland geomorphology developed over the past century have been characterised by divergent conceptual frameworks and have been hindered by language barriers. Here, we review the main theories and assess them with reference to field evidence from central Queensland, Australia.

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Thyroid Hormones And Their Effects: A New Perspective, A. J. Hulbert Jan 2000

Thyroid Hormones And Their Effects: A New Perspective, A. J. Hulbert

Faculty of Science - Papers (Archive)

The thyroid hormones are very hydrophobic and those that exhibit biological activity are 3',5',3,5-ltetraiodothyronine (T4), 3',5,3-l-triiodothyronine (T3), 3',5',3-l-triiodothyronine (rT3) and 3,5,-ldiiodothyronine (3,5-T2). At physiological pH, dissociation of the phenolic -OH group of these iodothyronines is an important determinant of their physical chemistry that impacts on their biological effects. When non-ionized these iodothyronines are strongly amphipathic. It is proposed that iodothyronines are normal constituents of biological membranes in vertebrates. In plasma of adult vertebrates, unbound T4 and T3 are regulated in the picomolar range whilst protein-bound T4 and T3 are maintained in the nanomolar range. The function of thyroid-hormone-binding plasma proteins …

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