The representation of engineering education as a social media topic on Twitter

Online social media systems have created new ways for individuals to communicate, share information and interact with a wide audience. For organisations, social media provide new avenues for communication and collaboration with their stakeholders. The potential value of social media tools to assist in the successful communication and marketing inside and outside of engineering organisations has been identified. In the context of engineering education, the potential of social media to open new modes of communication, interaction and experimentation between students and teachers has also been identified, and a limited number of examples can be found documented in the literature. One of the most widely-used social media tools is the ‘microblogging’ service Twitter. This research presents an analysis of nearly 19,000 tweets relating to ‘engineering education’ collected over a period of almost a year. Social network analysis is used to visualise the Twitter data. The Twitter social media communication is examined to identify who is active on this topic, who is influential, and what is the structure of the online conversations relating to engineering education. This work provides insights regarding how engineering education is currently represented in social media internationally, and offers a methodology to those interested in related future research.

Recognizing appropriate representation of Indigenous knowledge in professional design practice

This paper focuses on the need for designers to follow clear, concise, workable practises to engage appropriately and ethically with indigenous knowledge on projects involving the graphical depiction of indigenous culture. Incorporating indigenous symbols into visual communication design strategies impacts a wide range of stakeholders and therefore requires a sensitive approach with broad consultation in regard to permissions and intellectual property rights; issues can be worked through if respectful practice methods are applied. This paper acknowledges cultural appropriation is not new and that creative, cross cultural interpretation and expressions of hybridity should be encouraged. However respectful communication, consultation, and collaboration are required whenever commercial application of indigenous culture is attempted. To demonstrate the need for clarity, three case study examples will be presented, each with design solutions involving the use of graphical depictions of indigenous culture and each selected due to the varying degrees of stakeholder engagement undertaken in the design process. The introduction of the ladder of stakeholder engagement theory is a new concept introduced in this paper that can be employed to better consider the appropriate and ethical engagement of designers with indigenous knowledge.

One line lacks density : A study of the associations between cartographic representation and ontology

One way to represent and communicate density in the spatial disciplines including architecture, town planning and geography is through the map, plan or aerial photograph. These media and tools are generally perceived to be objective and analytical modes of practice. But what else do these modes of representation mediate? The paper will respond to this question by exploring notions of ontology, notions of dwelling and being in relation to lines and drawing techniques. A map or plan is an image, in addition to a mode of communication, and affects visual pleasure. As proposals of an unbuilt world and documents of existing environment, drawings contain lines of desire. The thesis is that the lines provide a corporeal framework for an imaginary projection between the viewer and a ‘real’ built environment. The paper becomes focussed on the specifics of the ‘green line’ that has represented post-war Beirut, and is typical of representation of sites of conflict.

In the plans of post-war Beirut an almost straight line running from the top to the bottom of the page is highlighted and represents a trajectory from the Place des Martyr to the Pine Forest. To descend from this metaphoric height of the map into the streets of Beirut is to confront urban density, traffic congestion, pollution exacerbated by dust, and a lack of greenery. During the war much of the fighting occurred across this marker, and since, it has been described as an empty neutral space due to the destruction of edifices on either side, and is often proposed as the only appropriate site for building projects of national significance. Is its emptiness an a priori condition of imaginary projections? Will it remain forever empty of the density everywhere else in Beirut? Who wants to dwell there?
This paper will examine the several nuances of the ‘green line’ and what role it plays between representation and defining ontological environments.

Screening women’s complicity in the holocaust : the problems of judgement and representation

This essay analyses the representation of female perpetrators in Holocaust fiction films, particularly in relation to the persecution of prisoners in the Nazi camps. The screening of women in general, and female perpetrators in particular, is shown to be problematic due to their frequent marginalisation and the gendered, voyeuristic ways in which women's bodies are often objectified in Holocaust films. While the actions of female perpetrators and their depiction in films pose acute problems of judgement and representation that need to be acknowledged, it is argued that films have the potential to effectively explore the issue of women's complicity in the Holocaust.

Extensions to knowledge acquisition and effect of multimodal representation in unsupervised learning

The phenomenal behaviour and composition of human cognition is yet to be defined comprehensibly. Developing the same, artificially, is a foremost research area in artificial intelligence and related fields. In this chapter we look at advances made in the unsupervised learning paradigm (self organising methods) and its potential in realising artificial cognitive machines. The first section delineates intricacies of the process of learning in humans with an articulate discussion of the function of thought and the function of memory. The self organising method and the biological rationalisations that led to its development are explored in the second section. The next focus is the effect of structure restrictions on unsupervised learning and the enhancements resulting from a structure adapting learning algorithm. Generation of a hierarchy of knowledge using this algorithm will also be discussed. Section four looks at new means of knowledge acquisition through this adaptive unsupervised learning algorithm while the fifth examines the contribution of multimodal representation of inputs to unsupervised learning. The chapter concludes with a summary of the extensions outlined.

Numerical modeling of dual phase microstructure behavior under deformation conditions on the basis of digital material representation

Development of a digital material representation (DMR) model of dual phase steel is presented within the paper. Subsequent stages involving generation of a reliable representation of microstructure morphology, assignment of material properties to component phases and incorporation of the model into the commercial finite element software are described within the paper. Different approaches used to recreate dual phase morphology in a digital manner are critically assessed. However, particular attention is placed on innovative identification of phase properties at the micro scale by using micro-pillar compression tests. The developed DMR model is finally applied to model influence of micro scale features on failure initiation and propagation under loading conditions.

Assessment of habitat representation across a network of marine protected areas with implications for the spatial design of monitoring

Networks of marine protected areas (MPAs) are being adopted globally to protect ecosystems and supplement fisheries management. The state of California recently implemented a coast-wide network of MPAs, a statewide seafloor mapping program, and ecological characterizations of species and ecosystems targeted for protection by the network. The main goals of this study were to use these data to evaluate how well seafloor features, as proxies for habitats, are represented and replicated across an MPA network and how well ecological surveys representatively sampled fish habitats inside MPAs and adjacent reference sites. Seafloor data were classified into broad substrate categories (rock and sediment) and finer scale geomorphic classifications standard to marine classification schemes using surface analyses (slope, ruggedness, etc.) done on the digital elevation model derived from multibeam bathymetry data. These classifications were then used to evaluate the representation and replication of seafloor structure within the MPAs and across the ecological surveys. Both the broad substrate categories and the finer scale geomorphic features were proportionately represented for many of the classes with deviations of 1-6% and 0-7%, respectively. Within MPAs, however, representation of seafloor features differed markedly from original estimates, with differences ranging up to 28%. Seafloor structure in the biological monitoring design had mismatches between sampling in the MPAs and their corresponding reference sites and some seafloor structure classes were missed entirely. The geomorphic variables derived from multibeam bathymetry data for these analyses are known determinants of the distribution and abundance of marine species and for coastal marine biodiversity. Thus, analyses like those performed in this study can be a valuable initial method of evaluating and predicting the conservation value of MPAs across a regional network.

Issues of Indigenous representation: white advocacy and the complexities of ethical leadership

This paper explores the tensions and complexities for two principals as they work towards equity and improved social and educational outcomes for their Indigenous students. Drawing on Foucault’s fourfold ethical frame and poststructuralist notions of the subject, this paper presents the different ways the white female principals of Indigenous schools are formed as subjects. We illustrate how the multiplicities of their subject formation are influenced by the historicity and contextual factors of the schools and communities. These factors play a significant part in how these principals work as advocates and differently experience and negotiate the tensions around representation of and for Indigenous schools and communities. In realising equity goals for Indigenous students, the paper draws on Foucault’s work to illustrate the imperative of school leaders’ cognisance of, and capacity to work with, these factors.