Environmental site assessment for abalone ranching on artificial reef

This study investigated the feasibility of ranching the abalone Haliotis rubra (Leach) and Haliotis laevigata (Donovan) on concrete artificial reefs at a site chosen by industry investors on silty bottom off Altona Beach, Port Phillip Bay, Victoria, Australia. The study started from the premise that artificial reef deployment combined with abalone stock enhancement may achieve the dual purpose of habitat and stock improvement. It evaluated the hydrodynamics of the site in relation to artificial reef structural stability and drift algal transport, the development and ecology of the artificial reef assemblage, and abalone enhancement by seeding the reefs with hatchery juvenile abalone and transplanting adult broodstock abalone. Despite a scarcity of reports on culturing abalone on artificial reef, a literature review examined broadly the functions of artificial reefs, particularly in the context of abalone enhancement, and the relationship between artificial reefs, hydrodynamics and ecology. The major finding was that the success of artificial reef projects is highly dependent on the environment of the chosen site, and that preliminary studies are essential to predict their likely success. This consideration alone provided strong justification to undertake this study. The topography at the Altona site was generally flat, with natural patches of low basalt boulder reef, offering low habitat complexity, yet supporting a diverse range of flora and fauna, including a low-density wild stock of H. rubra. Water depth was a mean of 3.3 m at low tide and 4.4 m at high tide. A single, uncomplicated, concrete artificial reef of H-shape design, was tested as abalone habitat. The hydrodynamic analysis confirmed previous studies of Port Phillip Bay, with mild current speeds of mean 0.045 m.s-1, and maximum-modelled wave height (H1/3) of 1.21 m and period (T1/3) of 4.51 sec. Water temperature ranged from 9.9şC during July to 23.8şC during January, with salinity averaging of 35.5 ppt. The site had a low probability of receiving drift algae, necessary as a food source for abalone, because of its geographic location, potentially affecting ranch productivity. Ecological monitoring of the three-year old artificial reef shows complex changes in the flora and fauna over time, particularly in respect of the sessile fauna. Key differences between the artificial reef and a nearby natural reef community were: lower cover of corallines and late colonisers, such as sponges. High levels of sedimentation were recorded at the Altona site. Hatchery juvenile H. laevigata, with mean survival of 15% after two years and a mean annual growth rate of 39 mm, showed the most promise for outplanting. In comparison, for hatchery juvenile H. rubra, mean survival was 9% after three years and mean annual growth rate was 22 mm. No natural recruitment of H. laevigata was recorded on artificial reef despite transplants of adult broodstock on the reefs. Natural recruitment of H. rubra was also low and insufficient to reliably contribute to abalone ranch stock. Having examined the hydrodynamic, ecological and enhancement attributes of the Altona site, the study concluded that the site was marginally viable for abalone ranching, and that an alternative site near Werribee, 20 km further southwest, had superior attributes for growth and survival of abalone.

Admissible Christianity : a study of Christian fundamentalism in the writings of James Barr

An attempt to set forth the essential nature of a theology is a notoriously difficult task. This thesis addresses two questions to a contemporary study of fundamentalism. It asks to what extent has James Barr been able to describe the theology of fundamentalism and to what extent his critical analysis of that theology is philosophically valid? The first chapter identifies the inherent difficulties in a phenomenology of fundamentalism and includes an historical survey of the theology of the movement. This chapter is supported by appendix one which identifies the philosophical culture associated with fundamentalist thought. Barr's description of the theological and religious character of fundamentalism is accepted within the identified limitations. The second and third chapters give an account of Barr's theological evaluation of fundamentalism. He argues the fundamentalists espouse an aberrant form of Christianity. Their religion represents a projection onto the biblical text of a religion foreign to the theological character of the Old and New Testaments. This projection is achieved by an intellectually sophisticated hermeneutical procedure. The doctrines of inerrancy, verbal inspiration and infallibility establish an understanding of Christianity which does not represent the essential character of the Christian faith. Fundamentalist hermeneutics, Barr concludes, allows for a theology indigenous neither to the biblical text nor to the Christian tradition. It attempts to afford biblical justification to the doctrines of a human religion extraneous to the biblical text. The fourth chapter considers the philosophical basis of Barr's understanding of the Bible. He takes the idealist view that the biblical text possesses a theological meaning whose boundaries can be delineated and whose essential content defined. This chapter is supported by appendix two which locates Barr's writings on fundamentalism within his wider concerns about the hermeneutical problems raised by the biblical text and the religious authority of the Bible. The penultimate chapter surveys the insights of contemporary literary theory concerning the perception of written texts. The philosophical validity of an idealist view of the biblical text is questioned. Two major conclusions are drawn. Barr's assessment of fundamentalism is philosophically dependent upon his idealist perception of the biblical text. This conclusion leads to the more general conclusion that the biblical text contains no essential description of Christianity but is capable of being read according to a range of theological interpretations some of which are more defensible than others.

Liberty in key works of John Locke and John Stuart Mill

The ideas of liberty presented in the important works of John Locke and John Stuart Mill, The Second Treatise of Government (1689) and On Liberty (1859), are often viewed as belonging to the same conceptual tradition, that of English liberalism. This thesis is an articulation of the diversity between the theories of liberty expressed by Locke and Mill in the Second Treatise and On liberty. \ am aiming to provide a corrective to the tendency to ignore or to gloss over very significant differences between the two men. The work concentrates on the philosophical aspects of each theory of liberty, arguing that they differ in four respects. These are; definitions of liberty; justifications of liberty; how much liberty and for whom they recommend it, and finally, who they believe threatens liberty and how this threat is to be curbed. It is the purpose of this thesis to show that in terms of these areas Locke and Mill are pursuing different ends. I conclude that Locke and Mill present strikingly different theories of liberty and cannot be thought of as belonging to the one conceptual tradition in terms of the definition, the justification, the prescription and the threat to liberty. Ultimately, I question the value of including Locke and Mill in the one conceptual tradition of liberty solely on the basis that they argue ‘freedom from.’

A stochastic derivation of the ratio form of contest success functions

This note provides a distribution-based justification for the ratio form of contest success functions (CSFs), in which a player’s success depends positively on her effort relative to that of her opponents. I show that the inverse exponential distribution of the random shocks yields the ratio form. Extending this approach to asymmetric contests, I also derive an asymmetric ratio form of CSFs.

Transitional issues of induction into design education for international undergraduate students : a case study analysis of architecture

The overarching aim of this paper is to present and discuss a collaborative undertaking between the School of Architecture and Building and the Academic Skills Unit at Deakin University, Australia in a programme called The Integrated Support Programme for Architecture. It does this in the following ways. It provides a justification for the setting up of an integrated programme for international architecture students. It describes the programme that was set up and outlines the reasons for collaboration between an academic School and an Academic Skills support services unit to prepare students both nationally and internationally as graduates of architecture. It then reports on a study undertaken to evaluate the programme in terms of student response and perception. Following this, it highlights directions for effective and strategic transition of past and present learning for international students. Using a case study analysis, the thrust of this paper is to advance knowledge and understanding of the pertinent issues related to international students either commencing or articulating into the professional course of architecture. It is envisaged that in this discussion matters may be raised for a strategic and effective transition of generic and internationalised learning for international students.

Ecology of feral cats (Felis catus) at a refuse dump in coastal southern Victoria, Australia

The ecology and behaviour of a colony of feral cats was studied at a refuse dump at Anglesea, Victoria. Research found that the cats lived at the dump all year round, congregating on the exposed refuse at night. Here they fed mainly on meat scraps, supplementing their diet with local wildlife. Aggression between individual cats was rare, allowing them to live as a colony, rather than as solitary individuals. Although female cats were fecund, breeding success was low, preventing a steady increase in the population. No justification for controlling these cats could be found at this time.

Selection of priority groups for obesity prevention current approaches and development of an evidence-informed framework

Resources for obesity prevention interventions are inevitably limited, necessitating the selection of priority groups to ensure effective and equitable use of funds. This paper aims to review published approaches to selection of priority groups ('target populations') for obesity prevention, and to present the development of a new systematic framework for organizing and assessing evidence for selecting priority groups. A review was conducted of the process and justification described for selecting priority groups in a sample of obesity prevention publications. Using the results of this review and adaptation of theory and frameworks in both the obesity prevention and health promotion priority-setting literature, a framework was developed for assessment of potential priority groups for obesity prevention. The published literature lacks discussion of and explicit processes for selection of priority groups for obesity prevention intervention. The new framework describes specific types of evidence that should be considered in the assessment of a potential priority group for obesity prevention and has applications for funding and implementing community-based or settings-level obesity prevention interventions and research. Application of this framework has the potential to enhance the effective use of limited obesity prevention resources and to identify areas in need of additional research evidence.

A microfluidics device to monitor platelet aggregation dynamics in response to strain rate micro-gradients in flowing blood

This paper reports the development of a platform technology for measuring platelet function and aggregation based on localized strain rate micro-gradients. Recent experimental findings within our laboratories have identified a key role for strain rate micro-gradients in focally triggering initial recruitment and subsequent aggregation of discoid platelets at sites of blood vessel injury. We present the design justification, hydrodynamic characterization and experimental validation of a microfluidic device incorporating contraction–expansion geometries that generate strain rate conditions mimicking the effects of pathological changes in blood vessel geometry. Blood perfusion through this device supports our published findings of both in vivo and in vitro platelet aggregation and confirms a critical requirement for the coupling of blood flow acceleration to downstream deceleration for the initiation and stabilization of platelet aggregation, in the absence of soluble platelet agonists. The microfluidics platform presented will facilitate the detailed analysis of the effects of hemodynamic parameters on the rate and extent of platelet aggregation and will be a useful tool to elucidate the hemodynamic and platelet mechano-transduction mechanisms, underlying this shear-dependent process.

A comparative analysis of directors' duty of care, skill and diligence in South Africa and in Australia

The South African and Australian law regarding directors' duty of care, ski ll and diligence were influenced considerably by English precedent of the late 1800s and early 19005. Originally both jurisdictions adopted a conservative approach towards directors' duty of care, skill and diligence. This resulted in very low standards of care, skill and diligence expected of directors. In Australia, the standards of care and diligence expected of directors changed drastically with the case of Daniels v Anderson, where objective standards were used to determine a breach of directors' duty of care and diligence, and when objective standards of care and diligence were introduced in Australian corporations legislation. In this article it is submitted that if the opportunity arose for a South African court to consider whether a director is in breach of his or her common law duty of care, skill and diligence, the form of fault that will be required will be negligence as judged against the standards of a reasonable person. This means that in actual fact objective standards of care and diligence are expected of directors in South Africa. Although section 76(3) of the South African Companies Act 71 of 2008 does not introduce purely objective standards of care, skill and diligence, the section is defended in this article. It is pointed out that encouraging emerging entrepreneurs to become directors of South African companies provides justification for keeping subjective elements as part of the test to determine whether a director was in breach of his or her statutory duty of care, skill and diligence.

Heritage and dialogue : using heritage conservation to strengthen the defences of peace

The Preamble to UNESCO's 1945 Constitution asserted that wars are created in the minds of men and that it is in the minds of men that the defences of peace must be built. Exploring this proposition was vital in the post World-War II years, but it is equally critical in the 21st century when world efforts towards peace continue to be undermined by intense forms of nationalism and ethnic rivalries that commonly use cultural differences as a justification for conflict.

However, while strengthening intercultural dialogue underlies the creation of UNESCO, its flagship World Heritage program under the 1972 World Heritage Convention seems to be losing touch with this motivating principle. In this paper I explore the politicization of the program and argue that a re-focus is needed if the program is to serve in improving intercultural dialogue, understanding and tolerance, and ultimately peace.

To this end it is suggested that ways in which the World Heritage program might provide a stronger focus on dialogue-creation should be prioritized. These include giving priority to new transnational inscriptions and developing new stratagies for interpreting sites in more cross-culturally sensitive ways.

The right to an impartial hearing trumps the social imperative of bringing accused to trial even 'down under'

Accused persons who are subjected to a saturation level of negative media coverage may be denied an impartial hearing, which is perhaps the most important aspect of the right to a fair hearing. Despite this, the courts have generally held that the social imperative of prosecuting accused trumps the interests of the accused. The justification for an impartial hearing stems from the repugnance of convicting the innocent. Viewed dispassionately, this imperative is not absolute, given that every legal system condones procedures which result in the conviction of some innocent people. While the importance of guarding against wrongful convictions has been overstated, the imperative to bring to trial all accused has been even more exaggerated. The legal system has displayed a capacity to deal with cases where the guilty walk free. The institutional integrity of the criminal justice system would be significantly compromised by convictions that are tarnished by pre-judgment. Confidence in the criminal justice system is more important than individual criminal accountability. The inability to receive an impartial hearing should result in a permanent stay. The only exception is where the alleged crime has the capacity to cause widespread fear or social unrest. This only applies in relation to serious acts of terrorism. This article focuses on recent legal fair trial developments in Australia, however, the analysis, reasoning and conclusion applies in relation to all jurisdictions where juries determine guilt and innocence.

Law-and-order politics, public-opinion polls, and the media

Over the past two decades, considerable political rhetoric has focused on the need to get tough on crime. Justification for this hard-line approach has been the public's apparent concem about rising crime rates and its increasing dissatisfaction with criminal sentencing. In this paper, we consider characteristics both of the measurement of public opinion and of the influences upon public opinion that may contribute to the depiction of a fearful, punitive community. In particular, we identify sources of bias in the methods and contexts of opinion-polling that promote a distorted representation of the discrepancy between community expectations of sentencing and the practices of the judiciary. We argue that the practices of pollsters, politicians, and media combine to create a self-sustaining obstacle to considered community discussion of crime and criminal sentencing.

Ethical relativism vs absolutism : research implications

Purpose – The constructs of relativism and absolutism have a significant role to play in the development of ethical theory; however, they are commonly simplified in their depictions and are philosophically more complex than we give them credit for. The purpose of this paper is to undertake an in-depth examination of ethical relativity and ethical absolutism before concluding with a discussion of which research implications warrant further investigation.
Design/methodology/approach – A descriptive, historical, anthological approach has been taken.
Findings – Ethical relativism is regrettably subject to a proliferation of related terminology and, in many instances with different meanings ascribed to similar terms. In addition, ethical relativity appears to attract different research perspectives that are heavily dependent on their academic origins. A clear distinction needs to be made between ethical and situational relativity. It is suggested that relativism is present in the process of moral justification and that ethical relativism should be analyzed from three levels: the individual level, the role and group level, and the cultural levels. The over-riding objection to ethical relativism rests on the consequences of accepting relativism, which undermines the existence and strength of global moral standards and the inherent positioning of ethical absolutism. Absolutism does not deny the existence of multiple moral practices evident around the world, but proposes that variations in ethical actions could still be rooted in common universal moral standards based on our requirements as human beings and the necessities of long-term survival.
Research limitations/implications – The ensuing discussions of relativism and absolutism open up a rich vein of research opportunities and suggest caution is required in regard to research methodologies. From a methodological perspective, care needs to be taken. For example, using hypothetical ethical dilemmas that are often unrelated to a specific industry or cultural setting has resulted in many researchers observing situational relativity rather than true ethical relativity.
Originality/value – This paper specifically examines whether there are differences in underlying and basic moral standards even though similarities in ethical behaviour have been determined, or whether differing ethical actions could, as the absolutists believe, originate from common universal standards despite apparent differences in perceptions and actions across cultures.

Is education becoming irrelevant in our research?

It is argued in this paper that in a culture of ‘performativity’ research into ‘education’ is often avoided. It is observed in many research publications that attention is given to techniques of learning, teaching, management, social equity, identity formation, leadership and delivery of the curriculum, without a justification being offered as to why such instrumental approaches should be regarded as being ‘educational’. Often research quite unproblematically adopts rational economic justifications couched in terms of ‘efficiency’ and ‘effectiveness’. Such approaches are however identified as nihilistic and not educational (Blake et al., 2000).

Is 'education' becoming irrelevant in our research?

It is argued in this paper that in a culture of ‘performativity’ research into ‘education’ is often avoided. It is observed in many research publications that attention is given to techniques of learning, teaching, management, social equity, identity formation, leadership and delivery of the curriculum, without a justification being offered as to why such instrumental approaches should be regarded as being ‘educational’. Often research quite unproblematically adopts rational-economic justifications couched in terms of ‘efficiency’ and ‘effectiveness’. Such approaches are however identified as nihilistic and not educational (Blake et al., 2000)