Fuzzy clustering of non-convex patterns using global optimization

This paper discusses various extensions of the classical within-group sum of squared errors functional, routinely used as the clustering criterion. Fuzzy c-means algorithm is extended to the case when clusters have irregular shapes, by representing the clusters with more than one prototype. The resulting minimization problem is non-convex and non-smooth. A recently developed cutting angle method of global optimization is applied to this difficult problem

Methods of construction of OWA operators from data

This paper investigates the problem of obtaining the weights of the ordered weighted aggregation (OWA) operators from observations. The problem is formulated as a restricted least squares and uniform approximation problems. We take full advantage of the linearity of the problem. In the former case, a well known technique of non-negative least squares is used. In a case of uniform approximation, we employ a recently developed cutting angle method of global optimisation. Both presented methods give results superior to earlier approaches, and do not require complicated nonlinear constructions. Additional restrictions, such as degree of orness of the operator, can be easily introduced

Usability and learning in online environments : a case of interactive encounters

This paper proposes a set of strategies to maximise learner-content and learner-learner interactions in on-line learning environments. Extrapolating the outcomes of a research study that investigated the ways in which users responded to the interactive constructs embedded within interactive multimedia applications, the concept of encounter theory is introduced. Using observation and interview techniques, participants in the study identified a range of options by which learnercomputer interactions might be enhanced. The implications of these findings for online and desktop environments are considered, specifically in terms of the independent learner's encounter with content material and other learners. Developing a comprehensive understanding of the interactive phenomenon will not only lead to more effective useability and learning in on-line environments, but also to their working better for the learner.

Rhetorical theory of public relations: opening the door to semiotic and pragmatism approaches

The 2001 Handbook of Public Relations edited by Robert Heath contains a prominent article advocating the use of rhetorical theory or ‘rhetorical enactment rational’ as a fruitful way of advancing theoretical understandings of public relations. In 2004 Heath and Dan Millar edited: Responding to Crisis: A Rhetorical Approach to Crisis Communication. These are the latest excursions into a perspective on public relations reflecting the extensive study of rhetoric in North America. Other examples are Public Relations Inquiry as Rhetorical Criticism (Elwood, 1995); Rhetorical and Critical Approaches to Public Relations (Toth and Heath, 1992); and a chapter Public Relations? No, Relations with Publics: A Rhetorical-Organisational Approach to Contemporary Corporate Communication (Cheney and Dionisopoulos, in Botan and Hazleton (Eds.) 1989).

The conventional notion of rhetoric is argumentation and persuasion stemming from the ancient Greek sophists, such as Aristotle, and from the Romans, particularly Cicero and Quintillion. Rhetoric became a fundamental plank of the trivium of ancient and medieval education: grammar, logic and rhetoric. Then in the 20th century Kenneth Burke, Stephen Toulmin and Chaim Perelman with Lucie Olbrechts-Tyteca extended Aristotle’s suggestion that: “Rhetoric is the counterpart of dialectic” Aristotle (trans. 1991). To use the rhetorical approach to argue that rational discourse cannot describe the world on its own. Instead living, enculturated human beings have to perceive ‘their’ truths. They take a perceptual ‘position’ on reason.

Public relations, is an industry for influencing perceptual ‘positions’. But the study of perception and attempts to influence perception cannot be claimed by rhetorical scholars alone. Semioticians and linguists who take the perspective of linguistic pragmatics also claim this field. This paper takes the example of ‘public relations’ as a focus for the confluence of rhetorical, semiotic and pragmatism approaches to the ‘problematic’ of understanding and truth.

A chaos theory interpretation of community perceptions of Australian forest policy

This paper proposes a methodology for measuring community values towards Australian forest policy using chaos theory. The use of chaos theory within social sciences has been restricted due to chaos-based analysis requiring time-continuous data. Using scale-based data, iconographs are suggested as a method of dynamically representing community values for forestry at a higher phase plane. In addition, the method also provides opportunity for control of chaos by policy makers in altering community attitudes.

Emotion, reason and tradition : essays on the social, poltical and economic thought of Michael Polanyi

This collection of essays demonstrates the continuing importance of the work of Michael Polanyi for the understanding, not only of the great events of the 20th century, but also of the problems that face us in the 21st century. Polanyi moved liberalism away from a negative, sceptical and rationalist basis towards an acceptance of trust, tradition and faith in transcendent values. His conception of the free society is not one merely of doing as one pleases nor vacuously 'open', but one of individual and communal self-dedication to those values and ideals.These essays, authored by a distinguished international and interdisciplinary panel of invited contributors, examine Polanyi's specific insights in the theory of knowledge, the nature and source of social order and the philosophy of economics and science and draw relevant comparisons between Polanyi and related thinkers such as Popper, Hayek and Mises. This book shows the sources of Polanyi's ideas and his distinctive contribution to philosophy generally, to social and political thought and to economics.

Theories of international relations

This collection of essays demonstrates the continuing importance of the work of Michael Polanyi for the understanding, not only of the great events of the 20th century, but also of the problems that face us in the 21st century. Polanyi moved liberalism away from a negative, sceptical and rationalist basis towards an acceptance of trust, tradition and faith in transcendent values. His conception of the free society is not one merely of doing as one pleases nor vacuously 'open', but one of individual and communal self-dedication to those values and ideals.These essays, authored by a distinguished international and interdisciplinary panel of invited contributors, examine Polanyi's specific insights in the theory of knowledge, the nature and source of social order and the philosophy of economics and science and draw relevant comparisons between Polanyi and related thinkers such as Popper, Hayek and Mises. This book shows the sources of Polanyi's ideas and his distinctive contribution to philosophy generally, to social and political thought and to economics.

Contemporary philosophy and J.L. Shaw

Commemorative volume on Jaysankar Lal Shaw, b. 1939, Indian philosopher.

Using activity theory in researching young children's use of calculators

Constructivist and socio-cultural perspectives in mathematics education highlight the crucial role that activity plays in mathematical development and learning. Activity theory provides a socio-cultural lens to help analyse human behaviour, including that which occurs in classrooms. It provides a framework for co-ordinating constructivist and socio-cultural perspectives in mathematics learning. In this paper, we adopt Cole and Engeström's (1991) model of activity theory to examine the mediation offered by the calculator as a tool for creating and supporting learning processes of young children in the social environment of their classroom. By adopting this framework, data on young children's learning outcomes in number, when given free access to calculators, can be examined not only in terms of the mediating role of the calculator, but also within the broader context of the classroom community, the teachers' beliefs and intentions, and the classroom norms and the division of labour. Use of this model in a post hoc situation suggests that activity theory can play a significant role in the planning of future classroom research.

Game theory applications in natural resource management : review of evidence, problems and potential

Game theory is a rapidly advancing approach to structure and understand complex management problems in the natural resources sector in both the developed and developing countries. Many natural resource problems are complex due to common property and public goods characteristics. Despite these limitations many researchers have used game theory to analyze water shed management, irrigation water management, grazing land management, and managing other ecological resources. The prisoner’s dilemma game has been widely used. The work of Runge shows that collective action is feasible if a critical mass of people can cooperate. The use of game theory is hindered by lack of information, paucity of empirical applications and the lack of interest by policy makers who wish quick answers to critical policy issues. The potential still remains high for game theory to be productively used both in developing and developed countries.

Plagiarism – can preventative measures and a commitment to the value of learning by academics and students reduce plagiarism in classrooms?

Plagiarism is an interruptive act in the teaching and learning value chain. This paper analyses the impact of both plagiarism and effective assessment in the learning value chain. Effective assessment is the positive outcome. Plagiarism negates or breaks the chain. Anecdotal evidence suggests the incidences of plagiarism are increasing in faculties across the Queensland University of Technology (QUT), and where every subject/unit outline includes a statement and warning to students of the penalties of this activity, deterrence tools do not overcome the harmful impact of plagiarism on the teacher/student learning relationship. A working party established in 2000 in the Faculty of Business at QUT, examined the literature, university policies, teaching and learning practices, and examples of plagiarism and penalties in order to identify the wider learning and assessment issues surrounding plagiarism and options for action and policy. A three-semester study of acts of plagiarism and wide consultation with staff presented the working party with an opportunity to develop a set of preventative measures, and also exposed the legal, cultural and accountability issues of diverse attitudes and values.

The paper presents the findings and recommendations from the investigation, and also proposes an interpretation of marketing theory of the impact of plagiarism on the teaching and learning value chain.

The experiences of families of critically ill patients in Greece: A social constructionist grounded theory study

Background: The experiences of patients’ families in intensive care units (ICUs) are of international concern. In Greece however, adequate attention has not been paid to this issue.

Objective: To explore the experiences of critical care patients’ families in Greece.

Setting: The intensive care units of 3 general district hospitals in the area of Athens, Greece.

Methodology: The social constructionist version of grounded theory was used. In-depth interviews with 25 relatives of critically ill patients were carried out, and participant and non-participant observation was used to cross-validate the data obtained.

Results: Seven major categories were identified, with 32 components across all categories. The experiences of families revolved around the two core categories of “Intense Emotions” and “Vigilant Attendance”. The study conceptualised two new categories in this field, “Religiosity” and “Loss of Intimacy” and enhanced the category “Vigilant Attendance”. Three further categories were identified, namely “Caring”, “Dignity” and “Information”. The various interrelationships between the categories were also examined.

Conclusions: The study has examined the experience of Greek patients’ families from a qualitative perspective and suggests that major changes need to be made in terms of management and support.

Agency theory and accounting research : an overview of some conceptual and empirical issues

This chapter aims to give the reader an overview of agency theory (AT) and its application in accounting research. It delineates the basic assumptions and concepts of AT and identifies the various measures that can be undertaken to minimise agency costs. The chapter also provides a summary of the commonalities and differences across the three major paradigms adopted by accounting researches when using an agency framework: Principal-Agent, Transaction Cost Economics and Positivist (Rochester) model. Further, a review of some recent theoretical and empirical studies on the design of optimal contracts, namely those relating to implicit contracts, multi-agents and multi-period issues is undertaken. Several suggestions are made for future studies adopting an AT-based approach.

Corporate responsibility reports assurance trends and the role of management accountants

Over the past decade, corporate responsibility (CR) has moved from the fringes of the business world to being a significant boardroom agenda. What began largely as an extension of public relations reporting where organisations disclosed basic health and safety monitoring, and environmental impact results has now grown to a wider set of governance practices premised on the philosophy of sustainability.

This paper discusses some of the developing trends in the area of assurance of CR reports, and the emerging challenges faced by the assurance providers and managers alike. The paper also explores the role of management accountants in enhancing CR reporting and its assurance practices.

Vigilant pleasure as autoethnography : the life of the tea mind as critical history

I examine tea as cultural practice by exploring how it is implicated in the formation of individual subjectivities and national identity. While using the experience of learning and consuming tea lore as a foreigner as my explicit point of entry, I analyse how tea transmission practices are represented in Japanese films. My readings of these films are supported by a survey of the historical applications of tea as part of a project of national invention. Against tea's self-representation as purely cultural, I draw attention to this ideological silencing of its economic and political effects by claiming that institutionalised tea pedagogy has been a major player in a nationally distinctive discourse of transience. My thesis argues that autoethnography can be used to bring into view the ideological foundations of various social practices organised around tea sites and texts. Once ideology is visible autoethnography may mediate the effects of dominant discourses by making a modest form of private resistance possible. As a performance of critical and effective history, I explore the limits of consciously resisting institutionalised power by reflecting on how discourses of tea and social theory intersect in my autoethnographic account of tea experiences. I begin by locating my subjectivity in tea. After outlining how tea is useful to me in psychological, domestic and professional contexts, I survey autoethnographic writing and critical forms of textual analysis. Given that traditions of textual analysis set limits to what can be comprehended, I note that considerations of the role of subjectivity are sometimes absent from several modes of textual analysis. I contend that more delicate forms of textual analysis are possible when multiple forms of subjectivity are explicitly addressed. Subjectivity is emphasised as I move between performances of being a cultural insider of tea subculture and an ethnic and linguistic outsider of daily life in Japan when I examine the connections linking tea anecdotes, film narratives, individual tales and national myths. From the position of tea culture insider and consumer of social theory I examine the relationship between national culture and individual subjectivity. I identify internal contradictions in tea transmission practices and consider how tea pedagogy and its cult of personality are addressed in tea films. The thesis concludes by considering the utility of identities in a global economy and comment on recent theories addressing the ethical self and social practices. It is on this basis that I claim the readings advanced in the earlier chapters map the pleasures and limits of employing autoethnography as a form of private resistance against the dominant discourses of tea, nation, and leisure.