21 resultados para Chaos and Fractals

em Deakin Research Online - Australia


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Modifying single transferable vote (STV) by removing candidates according to their Borda scores creates a new vote counting system (STV-B) that is not quasi-chaotic, results in proportional representation, and promotes the election of moderate candidates. Dummett, M.A.E. [1997. Principles of Electoral Reform. Oxford University, New York] noted quasi-chaos in STV and proposed the “Quota/Borda system” (QBS) as a solution. STV-B and QBS retain proportional representation from STV, permit some influence on candidate selection to occur between voting blocks thereby promoting moderate results, and are much more stable than STV when subjected to small changes in voter preferences. Under STV-B, and not QBS, a minority that shares some preferences may elect a candidate even if the minority is not a solid coalition.

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Purpose – The purpose of this paper is to describe how order-generated rules applied to organizing form dualities can assist in creating the conditions for emergent, self-organized behavior in organizations, thereby offering an operational deployment of complexity theory.

Design/methodology/approach – The paper begins by showing that the concept of dualities is consistent with complexity-thinking. In addition, when applied to organizing forms, dualities represent a practical way of affecting an organization's balance between chaos and order. Thus, when augmented with order-generating rules, organizing form dualities provide an access point for the practical instigation of edge of chaos conditions and the potential for emergence.

Findings
– The paper maintains that many attempts to “manage” complexity have been associated with changes to organizing forms, specifically toward new forms of organizing. It is suggested that organizing form dualities provide some management guidance for encouraging the “edge of chaos” conditions advocated in complexity theory, although the details of self-organization cannot be prescribed given the assumptions of non-linearity associated with complexity theory perspectives. Finally, it is proposed that organizing dualities can elucidate the nature and application of order-generating rules in non-linear complex systems.

Practical implications – Dualities offer some guidance toward the practical implementation of complexity theory as they represent an accessible sub-system where the forces for order and chaos – traditional and new forms of organizing respectively – are accessible and subject to manipulation.

Originality/value
– The commonalities between dualities and complexity theory are intuitive, but little conceptual work has shown how the former can be employed as a guide to managing organizing forms. Moreover, this approach demonstrates that managers may be able to stimulate “edge of chaos” conditions in a practical way, without making positivistic assumptions about the causality associated with their efforts.

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Following a long independence struggle and international intervention, in 2006 the tiny impoverished state of Timor-Leste almost imploded in civil chaos and institutional collapse. The events of the time were quickly defined in terms of an east-west geographical and, broadly, linguistic and political divide, corresponding to pro- and anti-government groupings. International intervention quelled the worst of the violence, although elections in 2007 confirmed the general tendency, if not an absolute alignment, to the divide that had appeared in 2006. However, much also united Timor-Leste historically and culturally and, increasingly, in a broad acceptance of civic institutions. It was from this base that the small and sometimes fragile state began to build what promised to be a more coherent future.

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In his article "The Chi Complex and Ambiguities of Meeting" Paul Carter develops a discussion of interpersonal encounters by mobilizing an apparatus of references, ranging from Jean Genet to Lévinas, Derrida, Bachmann, Merleau-Ponty, and Arendt. The hypothesis is that meeting another person entails and subsumes a non-meeting; a resistance and a refusal. The article pursues the ambiguity at the heart of encountering the other through an investigation of the urban spaces that are allegedly designed to invite and facilitate meetings. The argument put forward is that these spaces are paradoxically designed to avert encounters. This is especially true in the context of a "new social, economic, and institutional life that seems to call into question the very existence of the collectivities referred to as 'community' or 'society'." The unfolding of this proposition describes a space and a topography that are open, supple, and capable of "mutual transformations." The Greek letter Chi, both in its meaning of chaos and Chora ("a process of cleavage in its double meaning"), is employed as a theoretical example of a place that defies rigidity and closeness and that invites us to linger and pause in order to allow the other to meet and be met.

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To defeat the heirs of the enlightenment with their own weapon i.e. reason itself. To reduce all philosophy all science all views to irrational meaningless babble using their own epistemic conditions of truth. To confound the products of reason by reason itself. To show that the rational in fact collapses into the irrational. By reason itself all products of human reason reduce to intellectual chaos. To shatter the categories of thought, to rob all views and ideas of any epistemic worth by using reason to show that they end in stultification foolishness, or absurdity. Reason confounds reason and convicts reason by it's own standard to unintelligibility, babble, stultification, incoherence foolishness and absurdity, or meaninglessness. Reasons critique of reason shows that there is no consistency in ally product of reason, no order , no coherence only chaos and absurdity, or meaninglessness. The life-jacket, or anchor reason gives in the void of meaninglessness is broken by reason itself. Into the void of nothing reason drops us. Cut adrift in meaninglessness we are free to acquire other insights other realizations by transcending reason. Meaning can be reduced to absurdity. Meaninglessness can be reduced to absurdity but for those who hold meaninglessness as a view, or meaning there is no hope.

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This paper deploys notions of emergence, connections, and designs for learning to conceptualize high school students’ interactions when using online social media as a learning environment. It makes links to chaos and complexity theories and to fractal patterns as it reports on a part of the first author’s action research study, conducted while she was a teacher working in an Australian public high school and completing her PhD. The study investigates the use of a Ning online social network as a learning environment shared by seven classes, and it examines students’ reactions and online activity while using a range of social media and Web 2.0 tools.

The authors use Graham Nuthall’s (2007) “lens on learning” to explore the social processes and culture of this shared online classroom. The paper uses his extensive body of research and analyses of classroom learning processes to conceptualize and analyze data throughout the action research cycle. It discusses the pedagogical implications that arise from the use of social media and, in so doing, challenges traditional models of teaching and learning.

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In today’s secular society, occult conceptions of architecture may seem somewhat anachronistic, but at the turn of the twentieth century the bourgeoisie, alongside society’s artistic and intellectual elite, were enthusiastically embracing a myriad of esoteric doctrines and mystical impulses. One of the most prominent and enduring examples of this cultural phenomenon is to be found in Rudolf Steiner’s quasi-philosophical system of Anthroposophy. As a path of spiritual development based on ancient mysteries of the occult, Anthroposophy offered people the belief that there existed a way out of the chaos and meaninglessness of modern industrialised society. Steiner used the medium of architecture as a way of repackaging the occult’s venerable secrets into a tangible, material form that made their hidden message more readily accessible to his contemporary audience. While he was striving towards creating a totally new architectural language appropriate to the modern age, he perceived architectural style as an evolutionary process that revealed its spiritual content in a particular way in every epoch. As such, Steiner made free use of historical and mythological precedents as archetypal references in his work, thus giving his architecture a genealogy that has, until now, remained largely undefined. By investigating Steiner’s indebtedness to ancient temples and the architecture of the baroque, a greater understanding of his architectural heritage is made possible, which not only helps to locate him within the cultural milieu of his day, but also within the broader context of architectural history. A spiritual thread runs through this history that demonstrates that Steiner’s architecture is not as idiosyncratic as it may initially seem, though whether his work represents an original step forward in the development of modern architecture, or is merely a hangover of nineteenth century eclecticism, must also be considered in order to determine the architectural value of Steiner’s esoteric ideas.

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The Regional Forest Agreement process has dominated Australian forest policy for the past decade. The RFA process set in place a mechanism by which benchmark conservation values were established for forest  ecosystems, whilst addressing the needs of the timber industry. The outcomes of a number of RFA's have been fraught with controversy. Key stakeholder groups have shown disagreement with processes and  outcomes of methods employed by government both in establishing conservation reserves and areas allocated to timber harvesting. This research uses non-linear techniques to examine the dynamical behavior in stakeholder responses and to identify patterns of behavior that may lead to prediction of stakeholder responses. The method developed in this research provides a bridge between social sciences and Chaos theory.1

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In this paper, an Evolutionary Artificial Neural Network (EANN), which combines the Fuzzy ARTMAP (FAM) neural network and a hybrid Chaos Genetic Algorithm (CGA), is proposed for undertaking pattern classification tasks. The hybrid CGA is a modified version of the hybrid real-coded genetic algorithms that includes a Chaotic Mapping Operator (CMO) in its search and adaptation process. It is used to evolve the connection weights in FAM, and the resulting EANN is known as FAM-hybrid CGA. The CMO in the hybrid CGA is used to generate a group of chromosomes that incorporates the characteristics of chaos. The chromosomes are then adapted with an arbitrary small amount of variation in every generation. As the evolution procedure proceeds, chromosomes with considerable differences are produced. Such chromosomes, which are located at different regions of interest in the solution space, are able to provide good solutions to undertake search and adaption problems. The effectiveness of the proposed FAM-hybrid CGA model is first evaluated using benchmark medical data sets from the UCI machine learning repository. Its applicability to medical decision support is then demonstrated using a real database of patient records with suspected Acute Coronary Syndrome. The results indicate that FAM-hybrid CGA is able to outperform its neural network counterpart (i.e., FAM), and it can be employed as a useful pattern classification tool for tackling medical decision support tasks.

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Objectives
This article provides a brief examination of the prejudices and politics framing current public debate on population ageing in Australia and the possible implications of this for the allocation of required health and social sector resources. The role and responsibility of nurses and professional nursing organisations to engage in and influence public policy debate concerning the health and social care of older people is highlighted.

Setting
Australia

Subjects
Australia's ageing population and succeeding generations over the next 40 years

Primary argument
According to the Australian government, population ageing in Australia is poised to cause unmanageable chaos for the nation's public services. The cost of meeting the future health and social care needs of older Australians is predicted to be unsustainable. Officials argue that government has a stringent responsibility to ration current and future resources in the health and social care sector, cautioning that if this is not done, the nation's public services will ultimately collapse under the strain of the ever increasing demands placed on these services by older people. This characterisation of population ageing and its consequences to the nation's social wellbeing may however be false and misleading and needs to be questioned.

Conclusion
The nursing profession has a fundamental role to play in ensuring responsible debate about population ageing and contributing to public policy agenda setting for the effective health and social care of Australia's ageing population.

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Most ecological and evolutionary processes are thought to critically depend on dispersal and individual movement but there is little empirical information on the movement strategies used by animals to find resources. In particular, it is unclear whether behavioural variation exists at all scales, or whether behavioural decisions are primarily made at small spatial scales and thus broad-scale patterns of movement simply reflect underlying resource distributions. We evaluated animal movement responses to variable resource distributions using the grey teal (Anas gracilis) in agricultural and desert landscapes in Australia as a model system. Birds in the two landscapes differed in the fractal dimension of their movement paths, with teal in the desert landscape moving less tortuously overall than their counterparts in the agricultural landscape. However, the most striking result was the high levels of individual variability in movement strategies, with different animals exhibiting different responses to the same resources. Teal in the agricultural basin moved with both high and low tortuosity, while teal in the desert basin primarily moved using low levels of tortuosity. These results call into question the idea that broad-scale movement patterns simply reflect underlying resource distributions, and suggest that movement responses in some animals may be behaviourally complex regardless of the spatial scale over which movement occurs.

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This paper argues that Janet Frame’s 1988 novel, The Carpathians, can be read as a series of manoeuvres operating at the frontiers of exegesis and fiction. The overall effect of these manoeuvres is to interrogate the conditions of an exegetical (or literary critical) engagement with Frame’s writings. In particular, The Carpathians drills down into the metaphorics of one of the key notions of literary criticism: critical distance. Critical distance is a catch phrase of exegesis, as well as of literary criticism, because it serves to appropriately position the exegete (like the literary critic) as both near to and distant from the object of study: the literary text. However, Frame’s fictional/Scientific concept of the Gravity Star deconstructs the metaphorics of distance and, by extension, critical distance itself, by suggesting a para-doxical relationship of propinquity and remoteness. The Gravity Star is ‘both relatively close and seven billion light years away.’ Thus, Frame introduces chaos into language and logic, with the dual effect of undermining exegetical activity (which depends on the  metaphorics linked to critical distance) and of creatively multiplying the meanings of The Carpathians. In this way, Frame’s novel replaces conventional exegesis with creative exegesis. My paper also looks at the games Frame plays, in this novel and in Towards Another Summer (2007), with Roland Barthes’s notion of the ‘death of the Author.’ Like critical distance, the Author is a prop for exegesis that certain manoeuvres of writing can undermine, thus allowing the literary text to reproduce itself on an interior plane.

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This thesis asks: ‘How can tertiary education nurture entrepreneurial creativity?’ Entrepreneurship is considered to be a vital determinant of economic growth and the entrepreneur is understood as someone who innovates and commercialises their own innovation. The setting is New Zealand which is struggling to make the shift from relying on primary production to becoming a ‘creative economy.’ The creative individual has been identified as a new mainstream but it is argued that in New Zealand, education provision is inadequate for supporting the development of the practice of entrepreneurship. The problem is not unique. Various writers are critical of business education generally, and of the mismatch between the passion and chaos in entrepreneurs’ lives and the way education programs are typically organised as a linear sequence of discipline-based courses with prescribed content, activities and outcomes. Rich data were gathered from in-depth interviews with twelve nascent, new or experienced entrepreneurs and two associates (one a marketer, the other a scientist). Each participant was drawn from a different area of economic endeavour. They were asked to share their stories and views about creativity, the connections between creativity and entrepreneurship, business success, formal and informal education, and ways to improve tertiary education programs. The research found that a suitable environment for nurturing creativity will most likely have structure but will also enable chaos. It will present opportunities for experiencing diversity, and will stimulate unconscious and conscious mental processes. It will provide scope for hard work that is fun and involves authentic risk-taking, and will enable both individual and purposeful teamwork. The study also found that business success is not based on knowledge but is rather about being resourceful. The becoming of the creative entrepreneur thus includes developing capability to network with peers and mentors and communicate with customers and staff, and developing passion for and resilience in the pursuit of a dream. The findings suggest that in an age of uncertainty, nurturing entrepreneurial creativity and resourcefulness requires learning to be viewed as a practice-based community process where knowing and doing are interwoven with being. It is argued that this needs to align with Ronald Barnett and Kelly Coate’s (2005) notion of ‘a curriculum for engagement.’ It is suggested that an entire program might simply invite students to work collaboratively to identify and exploit an entrepreneurial opportunity by producing and commercialising an appropriate product/service innovation; to undertake this work as two separate projects – one within an existing organisation, and the other as a new venture; and to theorise their work. It is proposed that a suitable framework lies in William Doll’s (2002) advocacy for a curriculum based on a matrix of five Cs: ‘currere,’ complexity, cosmology, conversation, and community. To these, creativity is added as a sixth C.

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This thesis provides an examination of the work of instructional designers in distance education, through the conceptual lens of chaos theory. Chaos theory was chosen as an analytical tool because of its ability to reveal the patterns and processes of complex systems as they move between order and turbulence. Recent work in the social sciences, specifically literary theory, has provided impetus for applications of chaos theory to educational settings. Specifically, chaos theory is used to analyse eight case studies of projects volunteered by instructional designers working in five institutions in Hong Kong and Australia. Data were gathered over a period of months with each participant, chiefly through interviews, but also involving diary accounts, electronic mail and letters. The methodology was thus qualitative, specifically informed by Eisner's vision of the ‘critical connoisseur’. Eisner equates an ‘enlightened eye’ with attainment of the skills of a critical connoisseur. First, an effective qualitative researcher must develop connoisseurship, the art of appreciation. On its own, though, connoisseurship is not enough; it is a private act, and thus needs a public face or presence. Criticism is this link, criticism being the art of disclosure. The critical connoisseur aims to help others to increase perception and deepen understanding of an educational situation or event. In addition to the empirical work, a parallel strand of this thesis investigates the theory and reported practice of instructional design. A brief history of instructional design is presented, along with discussion of acknowledged deficiencies of current theory and approaches. Recent reported investigations of both theory and practice are analysed from the viewpoint of chaos theory. Examination of key contributions in the literature of instructional design and distance education reveals considerable resonance between these contributions and the fundamental properties of chaotic systems. Links are made, in both the theoretical and empirical strands, between instructional design and the behaviour of dissipative structures, attractors and the process of bifurcation. Use is also made of the time-dependent nature of chaos theory as a theory of becoming, rather than one of being. The thesis comprises eight chapters, two appendices and a references section. The introductory chapter explains the research problem, and outlines the structure of the thesis. Methodological considerations are left until after an assessment of instructional design literature and (reported) practice. This deliberately theoretical investigation (Chapters 2 and 3) comprises the first of the parallel strands that are presented. The basic conclusions are that instructional design theory has not been particularly helpful to or used by instructional designers, and that chaos theory might provide an alternative way of viewing instructional design practice. The other parallel strand is the empirical work, which for four chapters outlines the methodology and my findings concerning the role of instructional designers in distance education. The methodology is detailed in Chapter 4. Chapter 5 establishes the contexts of the participants, by examining their backgrounds and introductions to their roles. It also investigates their views on their role and status within their institutions and with working colleagues. Chapter 6 is an exploration of the major issues that influenced the work of the instructional designers. These are the issues that arose naturally in the interviews as the participants outlined the development and interactions that took place on a day to day basis. Time emerges as a key influence in their work, and its effects on the projects are outlined and analysed. The ways that instructional designers give advice to those with whom they work is also investigated. The next chapter continues consideration of their work, but this time as they reflect on their role and its demands. This includes their reactions to the various metaphors that have appeared in the literature, along with those that they introduced into our discussions. The links that are established between the two parallel strands are drawn more explicitly in the final chapter, Chapter 8, which is a notion of what a model of instructional design based on my conclusions might resemble. It summarises the evidence that it is not necessarily by striving for order—in fact quite the opposite — during key periods of course development, that leads to creative outcomes. The introduction of uncertainty and turbulence does, in some cases and under some conditions, move the system to a higher level. The image that is offered from chaos theory is that of time-bound dissipative structures, interacting with their open environment at far-from-equilibrium conditions, and transforming themselves from disorder to order through bifurcation. The role of strange or chaotic attractors is highlighted in the process. The first appendix gives background information in terms of the methodology. The second is the heart of the data upon which the thesis draws. That is, the second appendix outlines the case studies of the participants. Most are short summaries, but the final one is a detailed study, tracing the progress of the design and development of a subject in distance education.

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DDoS attack traffic is difficult to differentiate from legitimate network traffic during transit from the attacker, or zombies, to the victim. In this paper, we use the theory of network self-similarity to differentiate DDoS flooding attack traffic from legitimate self-similar traffic in the network. We observed that DDoS traffic causes a strange attractor to develop in the pattern of network traffic. From this observation, we developed a neural network detector trained by our DDoS prediction algorithm. Our preliminary experiments and analysis indicate that our proposed chaotic model can accurately and effectively detect DDoS attack traffic. Our approach has the potential to not only detect attack traffic during transit, but to also filter it.