Visualisation of complex flows using texture-based techniques

Detailed representations of complex flow datasets are often difficult to generate using traditional vector visualisation techniques such as arrow plots and streamlines. This is particularly true when the flow regime changes in time. Texture-based techniques, which are based on the advection of dense textures, are novel techniques for visualising such flows. We review two popular texture based techniques and their application to flow datasets sourced from active research projects. The techniques investigated were Line integral convolution (LIC) [1], and Image based flow visualisation (IBFV) [18]. We evaluated these and report on their effectiveness from a visualisation perspective. We also report on their ease of implementation and computational overheads.

Development and review of vignettes representing older people with cognitive impairment

This paper describes a process undertaken to develop and review five clinical vignettes to be used in geriatric nursing educational research. The purpose of this process was to provide valid depictions of delirium and its subtypes and distinguish delirium from dementia. Five vignettes depicting hospital bedside interactions between nursing staff, family, and an older patient who displayed signs of one of the following conditions: delirium (hyper and hypo-active types respectively), dementia, or delirium (both types) superimposed on dementia were constructed. Vignette accuracy and reliability was established using a multistage process that culminated in formal review by a group of ten international nursing and medical delirium experts. The final five vignettes accurately depicted the given scenario as agreed by the experts and were at an appropriate level of simplicity and clarity. Given the increased interest in vignettes for both nursing research and educational purposes, the described method of vignette development and review has the ability to assist other vignette developers in creating reliable representations of their desired clinical scenarios.

Feminist criminologies’ contribution to understandings of sex, gender, and crime

This chapter provides an overview of the contribution of feminist criminologies to understandings of the complex intersections between sex, gender and crime. Dozens of scholars and activists have participated in these debates over the past four decades. For our contribution to this handbook, we interviewed ten distinguished scholars whose contributions are recognized internationally. Through the commentary provided by these scholars, this chapter examines some of the distinctive contributions of feminism to our knowledge about sex, gender, and crime, as well as some of the challenges it continues to face in the field of criminology. We conclude that feminist work within criminology continues to face a number of lingering challenges, most notably in relation to the struggle to maintain relevance in a world where concerns about gender inequality are marginalized and considered as historical relics not contemporary issues; where there are on-going tensions around the best strategies for change, as well as difficulties in challenging distorted representations of female crime and violence; and where a backlash, anti-feminist politics seeks to discredit explanations that draw a link between sex, gender, and crime. This chapter critically reviews these lingering challenges—locating feminist approaches (of which there are many) at the centre and not the periphery of advancing knowledge about gender, sex, and crime.

Perceptions of over-accommodation used by nurses in communication with the elderly

The aim of the study was to determine how aspects of communication between nurses and the elderly were perceived by elderly people, future nurses, and uninvolved observers. Respondents (elderly women and nursing and psychology students) rated videotapes of interactions between a nurse and an elderly woman on three dimensions: patronizing, status, and solidarity. Three communication strategies and their combinations were represented in the vignettes. Because the strategies presented were perceived as patronizing by all three groups, no group effect was found for the patronizing dimension. The results show clear group differences particularly between the nursing students and the elderly, with the elderly rating many of the strategies more positively than did the nursing students. The results are discussed in relation to previous evaluations of overaccommodation, and implications of the different perceptions are considered.

The product of text and 'Other' statements : discourse analysis and the critical use of Foucault

Much has been written on Michel Foucault’s reluctance to clearly delineate a research method, particularly with respect to genealogy (Harwood 2000; Meadmore, Hatcher, & McWilliam 2000; Tamboukou 1999). Foucault (1994, p. 288) himself disliked prescription stating, “I take care not to dictate how things should be” and wrote provocatively to disrupt equilibrium and certainty, so that “all those who speak for others or to others” no longer know what to do. It is doubtful, however, that Foucault ever intended for researchers to be stricken by that malaise to the point of being unwilling to make an intellectual commitment to methodological possibilities. Taking criticism of “Foucauldian” discourse analysis as a convenient point of departure to discuss the objectives of poststructural analyses of language, this paper develops what might be called a discursive analytic; a methodological plan to approach the analysis of discourses through the location of statements that function with constitutive effects.

The product of text and “Other” statements : discourse analysis and the critical use of Foucault

Much has been written on Michel Foucault’s reluctance to clearly delineate a research method, particularly with respect to genealogy (Harwood 2000; Meadmore, Hatcher, & McWilliam 2000; Tamboukou 1999). Foucault (1994, p. 288) himself disliked prescription stating, “I take care not to dictate how things should be” and wrote provocatively to disrupt equilibrium and certainty, so that “all those who speak for others or to others” no longer know what to do. It is doubtful, however, that Foucault ever intended for researchers to be stricken by that malaise to the point of being unwilling to make an intellectual commitment to methodological possibilities. Taking criticism of “Foucauldian” discourse analysis as a convenient point of departure to discuss the objectives of poststructural analyses of language, this paper develops what might be called a discursive analytic; a methodological plan to approach the analysis of discourses through the location of statements that function with constitutive effects.

Language, Literacy and Literature

"Language, Literacy and Literature combines concepts of language, literature and literacy within a pedagogical framework that leads readers through a series of learning processes. In other words, it is as much a book about teaching English as it is a book about learning how to learn about teaching. The book provides models for pre-service teachers to help identify the kinds of dispositions towards learning that a teacher needs to develop, such as curiosity, collaboration and willingness to ‘give things a go’. It further challenges the pre-service teacher to question what they think they know, as well as discover what they need to know. A range of practical and relevant exercises and activities assist in building habits of reflexive practice."-- publisher website

Tranquility falls

“Tranquility Falls” depicts a computer-generated waterfall set to sentimental stock music. As the water gushes, text borrowed from a popular talk show host’s self-help advice fade in and out graphically down the screen. As the animated phrases increase in tempo, the sounds of the waterfall begin to overwhelm the tender music. By creating overtly fabricated sensations of inspiration and awe, the work questions how and where we experience contemplation, wonderment and guidance in a contemporary context. “Tranquility Falls” contributes to studies in the field of contemporary art. It is particularly concerned with representations of spirituality and nature. These have been important themes in art practice for some time. For example, artists such as Olafur Eliasson and James Turrell have created artificial insertions in nature in order to question contemporary experiences of the natural environment. Other artists such as Nam Jun Paik have more directly addressed the changing relationship between spirituality and popular culture. Using a practice-led research methodology, “Tranquility Falls” extends these creative inquiries. By presenting an overtly synthetic but strangely evocative pun on a ‘fountain of knowledge’, it questions whether we are informed less by traditional engagements with organised religions and natural wonder, and instead, increasingly reliant on the mechanisms of popular culture for moments of insight and reflection. “Tranquility Falls” has been exhibited internationally at LA Louver Gallery, Venice, California in 2013 and nationally with GBK as part of Art Month Sydney, also in 2013. It has been critically reviewed in The Los Angeles Times.

On the impact of the "linguistic turn" on research in information systems

The linguistic turn within philosophy has recently gained increased attention within social sciences. It can be seen as an attempt to investigate traditional philosophical problems by analysing the linguistic expressions used for these investigations. More generally, the phenomenon of language itself must be considered because of its (constitutional) impact on the investigation of phenomena in social sciences. In order to understand the consequences of the linguistic turn, its origins in philosophy are important and will be discussed. Within social sciences the linguistic turn already had significant impact. As an example, we will therefore discuss what directions the linguistic turn enabled for organizational analysis. Information Systems as a discipline must face the consequences of the linguistic turn as well. We will discuss how the linguistic framework introduced impacts the development of knowledge management and that of managerial and organizational support systems. This example shows what different perspectives the linguistic turn can provide for investigations within Information Systems. In addition, we will briefly outline the impact of the linguistic turn with respect to methodologies in Information Systems research.

Faster Monte Carlo simulation of radiotherapy geometries

Using Monte Carlo simulation for radiotherapy dose calculation can provide more accurate results when compared to the analytical methods usually found in modern treatment planning systems, especially in regions with a high degree of inhomogeneity. These more accurate results acquired using Monte Carlo simulation however, often require orders of magnitude more calculation time so as to attain high precision, thereby reducing its utility within the clinical environment. This work aims to improve the utility of Monte Carlo simulation within the clinical environment by developing techniques which enable faster Monte Carlo simulation of radiotherapy geometries. This is achieved principally through the use new high performance computing environments and simpler alternative, yet equivalent representations of complex geometries. Firstly the use of cloud computing technology and it application to radiotherapy dose calculation is demonstrated. As with other super-computer like environments, the time to complete a simulation decreases as 1=n with increasing n cloud based computers performing the calculation in parallel. Unlike traditional super computer infrastructure however, there is no initial outlay of cost, only modest ongoing usage fees; the simulations described in the following are performed using this cloud computing technology. The definition of geometry within the chosen Monte Carlo simulation environment - Geometry & Tracking 4 (GEANT4) in this case - is also addressed in this work. At the simulation implementation level, a new computer aided design interface is presented for use with GEANT4 enabling direct coupling between manufactured parts and their equivalent in the simulation environment, which is of particular importance when defining linear accelerator treatment head geometry. Further, a new technique for navigating tessellated or meshed geometries is described, allowing for up to 3 orders of magnitude performance improvement with the use of tetrahedral meshes in place of complex triangular surface meshes. The technique has application in the definition of both mechanical parts in a geometry as well as patient geometry. Static patient CT datasets like those found in typical radiotherapy treatment plans are often very large and present a significant performance penalty on a Monte Carlo simulation. By extracting the regions of interest in a radiotherapy treatment plan, and representing them in a mesh based form similar to those used in computer aided design, the above mentioned optimisation techniques can be used so as to reduce the time required to navigation the patient geometry in the simulation environment. Results presented in this work show that these equivalent yet much simplified patient geometry representations enable significant performance improvements over simulations that consider raw CT datasets alone. Furthermore, this mesh based representation allows for direct manipulation of the geometry enabling motion augmentation for time dependant dose calculation for example. Finally, an experimental dosimetry technique is described which allows the validation of time dependant Monte Carlo simulation, like the ones made possible by the afore mentioned patient geometry definition. A bespoke organic plastic scintillator dose rate meter is embedded in a gel dosimeter thereby enabling simultaneous 3D dose distribution and dose rate measurement. This work demonstrates the effectiveness of applying alternative and equivalent geometry definitions to complex geometries for the purposes of Monte Carlo simulation performance improvement. Additionally, these alternative geometry definitions allow for manipulations to be performed on otherwise static and rigid geometry.

Workshop "Language and Internet" [Moderator]

The importance of language for Internet and Society: developing a language-intelligent approach

Narrative review of changing medical and feminist perspectives on menopause : from femininity and ageing to risk and choice

Meanings and descriptions of menopause have shifted focus over the past century and a half; more particularly the past sixty years has seen a shift from descriptions of hormone decline and its relation to ageing, femininity and symptoms of menopause since the 1960's to the possibility for preventive medicine afforded by menopause. Medicine is not a static field in its construction of menopause. It has changed, not least by its engagement (positively or negatively) with critique from both within (epidemiological) and without (feminist and social sciences). In this review we identify three recent changes: (1) Increasing concern with women's decision-making. (2) The emergence from within medicine of the rejection of the use of language which defines menopause as a condition of deficiency. (3) New insights from postmodern and poststructural analyses of menopause that examine the epistemological foundations of medical and feminist concepts of menopause and contest fixed descriptions of the experience of menopause. Key aspects of a ‘medical menopause’ nevertheless remain constant: menopause is a loss of hormones that results in predictable effects and risks and may be ameliorated by hormone replacement therapy. A question therefore emerges about how and to what effect medical practitioners have engaged with critiques of the medical menopause?

Going offline : An exploratory cultural artifact analysis of an internet dating site's development trajectories

In this study we develop a theorization of an Internet dating site as a cultural artifact. The site, Gaydar, is targeted at gay men. We argue that contemporary received representations of their sexuality figure heavily in the site’s focus by providing a cultural logic for the apparent ad hoc development trajectories of its varied commercial and non-­‐commercial services. More specifically, we suggest that the growing sets of services related to the website are heavily enmeshed within current social practices and meanings. These practices and meanings are, in turn, shaped by the interactions and preferences of a variety of diverse groups involved in what is routinely seen within the mainstream literature as a singularly specific sexuality and cultural project. Thus, we attend to two areas – the influence of the various social engagements associated with Gaydar together with the further extension of its trajectory ‘beyond the web’. Through the case of Gaydar, we contribute a study that recognizes the need for attention to sexuality in information systems research and one which illustrates sexuality as a pivotal aspect of culture. We also draw from anthropology to theorize ICTs as cultural artifacts and provide insights into the contemporary phenomena of ICT enabled social networking.

Place psychology: Engaging with notions of 'home'

Psychology of place is theoretical territory shared by a wide range of disciplines. Currently, while environmental psychology addresses such questions as how people interact with and make meaning in places, clinical psychology has paid scant attention to the role of place in mental health. This paper focuses on two concepts from place psychology - place attachment and place identity. Place attachment is here defined as a sense of positively-valanced emotional connection to a familiar place (Morgan 2010). Place identity implies a stronger sense of belonging: the person as part of the place and the place as part of the person (Memmot & Long 2002). Both place attachment and place identity can be seen as relating to notions of ‘home’. My PhD is a work of interdisciplinary practice-based research using creative writing as a methodology to explore how place attachment, place identity and notions of home may support recovery from psychological trauma. A novel provides a site of imaginative encounter between author and reader, in which the two parties collaboratively create place and character through the medium of language. This paper links theory with practice by outlining some choices involved in exploring psychological constructs through narrative fiction.

Second international workshop on theory and applications of process visualization

The representation of business process models has been a continuing research topic for many years now. However, many process model representations have not developed beyond minimally interactive 2D icon-based representations of directed graphs and networks, with little or no annotation for information overlays. In addition, very few of these representations have undergone a thorough analysis or design process with reference to psychological theories on data and process visualization. This dearth of visualization research, we believe, has led to problems with BPM uptake in some organizations, as the representations can be difficult for stakeholders to understand, and thus remains an open research question for the BPM community. In addition, business analysts and process modeling experts themselves need visual representations that are able to assist with key BPM life cycle tasks in the process of generating optimal solutions. With the rise of desktop computers and commodity mobile devices capable of supporting rich interactive 3D environments, we believe that much of the research performed in computer human interaction, virtual reality, games and interactive entertainment have much potential in areas of BPM; to engage, provide insight, and to promote collaboration amongst analysts and stakeholders alike. We believe this is a timely topic, with research emerging in a number of places around the globe, relevant to this workshop. This is the second TAProViz workshop being run at BPM. The intention this year is to consolidate on the results of last year's successful workshop by further developing this important topic, identifying the key research topics of interest to the BPM visualization community.