Disrupting girls in virtual communities of practice: discursive performativity as agency

In line with the work of feminists ‘post-linguists’ (Threadgold, 1997; Poynton, 1989; Lee, 1994) who seek to produce readings of texts which indicate the ways individuals are positioned to take up positions within discourses and thus come to constitute themselves as subjects of those discourses, this paper reports on how adolescent girls’ hypermedia design works to alter the conceptual repertoire of the individual and in doing so alters the individual’s subjectivity. By examining girls hypermedia design that challenges/resists male domination, I discuss their acts of uploading and hypermedia design in terms of Butler’s theorization of discursive performativity. I believe the adolescent girls employ a form of “linguistic agency” or “discursive agency” (Butler, 1997) that allows them to make use of a wide range of discursive practices that are nonlinguistic or not entirely linguistic. Because the girls were involved in a set of relationships over time, both inside and outside of school in both virtual and real time, within their communities of practice (Lave & Wenger, 1991), they engage with particular areas of curricular knowledge—differently than boys—by showcasing their re-representations online. Consequently, this presents the possibility they may possess a joint enterprise and similar sense of identity. This paper puts forth the idea that within virtual communities of practice, new contexts emerge when disrupting girls/women can work in transgressive modes.

Image semantic classification by using SVM

There exists an enormous gap between low-level visual feature and high-level semantic information, and the accuracy of content-based image classification and retrieval depends greatly on the description of low-level visual features. Taking this into consideration, a novel texture and edge descriptor is proposed in this paper, which can be represented with a histogram. Furthermore, with the incorporation of the color, texture and edge histograms searnlessly, the images are grouped into semantic classes using a support vector machine (SVM). Experiment results show that the combination descriptor is more discriminative than other feature descriptors such as Gabor texture.

Multi-level semantic analysis for sports video

There has been a huge increase in the utilization of video as one of the most preferred type of media due to its content richness for many significant applications including sports. To sustain an ongoing rapid growth of sports video, there is an emerging demand for a sophisticated content-based indexing system. Users recall video contents in a high-level abstraction while video is generally stored as an arbitrary sequence of audio-visual tracks. To bridge this gap, this paper will demonstrate the use of domain knowledge and characteristics to design the extraction of high-level concepts directly from audio-visual features. In particular, we propose a multi-level semantic analysis framework to optimize the sharing of domain characteristics.

The 'China Threat' in American self-imagination: the discursive construction of other as power politics

Argues that the "China threat" argument in mainstream international relations literature in the United States is derived, primarily, from a discursive construction of otherness. Construction which is predicated on a particular narcissistic understanding of the U.S. self and on a positivist-based realism, concerned with absolute certainty and security; Concern which is central to the dominant U.S. self-imagery.

Perceived discrimination in Mapuche discourse : contemporary racism in Chilean society

This paper documents the experiences of perceived discrimination by Mapuches, the largest aboriginal group in Chile, focusing on their oral discourse about the phenomenon. As part of a national research project, 100 Mapuches were interviewed about their perception of discrimination toward them. These interviews were analyzed using the four-level method developed by Merino, which is mainly based on local semantic strategies and argumentative sequences and topoi. The analysis suggests that racism is experienced in everyday interethnic interactions by means of four modes: verbal, behavioral, institutional and macro-social. Verbal racism includes name-calling (e.g. 'indio' [Indian]) and stereotyping (e.g. 'primitive'), and prejudiced remarks. Behavioral racism includes looking, ignoring, avoiding, segregating and denial of identity. In the institutional mode, denial of opportunities and discrimination in various public offices, private institutions and services are frequent, with perpetrators acting on behalf of the institution for which they work. The macro-social mode includes cultural dominance of the economic and educational systems, and an ethnocentric perspective of history. The findings suggest the presence of a racist ideology underlying Mapuche's discursive reproduction of the way Chileans talk and think about them and behave toward them.

Within and against performativity : discursive engagement in adult literacy and basic education

The field of adult literacy and basic education (ALBE) has undergone dramatic changes in recent years with the advent of labour market programs, accreditation, competency-based assessment and competitive tendering for program funds. Teachers' working conditions have deteriorated and their professional autonomy has been eroded. ALBE has been increasingly instrumentalised to fulfil the requirements of a marketised economy and conform to its norms. The beliefs and value systems which traditionally underpinned the work of ALBE teachers have been reframed according to the principle of 'performativity' and the demands of the 'performative State' (Lyotard, 1984: 46, Yeatman 1994: 110). The destabilisation of teachers' working lives can be understood as a manifestation of the 'postmodern condition' (Lyotard 1984; Harvey 1989): the collapse of the certainties and purposes of the past; the proliferation of technologies; the impermanence and intensification of work; the commodification of knowledge and curricula; and the dissolving of boundaries between disciplines and fields of knowledge. The critiques of the modernist grand narratives which underpin progressivist and critical approaches to adult literacy pedagogy have further undermined the traditional points of reference of ALBE teachers. In this thesis I examine how teachers are teaching, surviving, resisting, and 'living the contradictions' (Seddon 1994) in the context of struggles to comply with and resist the requirements of performativity. Following Foucault and a number of feminist poststructuralist authors, I have applied the notions of 'discursive engagement' and 'the politics of discourse' (Yeatman 1990a) as a way of theorising the interplay between imposed change and teachers' practice. I explore the discursive practices which take place at the interface between the 'new' policy discourses and older, naturalised discourses; how teachers are engaged by and are engaging with discourses of performativity; how teachers are discursively constructing adult literacy pedagogy; what new, hybrid discourses of 'good practice' are emerging; and the micropractices of resistance which teachers are enacting in their speech and in their practice. My purpose was to develop knowledge which would support the reflexivity of teachers; to enrich the theoretical languages that teachers could draw upon in trying to make sense of their situation; and to use those languages in speaking about the dilemmas of practice. I used participatory action research as a means of producing knowledge about teachers' practices, structured around their agency, and reflecting their standpoint (Harding 1993). I describe two separate action research projects in which teachers of ALBE participated. I reflect on both projects in the light of poststructuralist theory and consider them as instances of what Lather calls 'within/against research' (Lather 1989: 27). I analyse written and spoken texts produced in both projects which reflect teachers' responses to competency-based assessment and other features of the changing context. I use a method of discourse mapping to describe the discursive field and the teachers' discursive practices. Three main configurations of discourse are delineated: 'progressivism', 'professional teacher' and 'performativity'. The teachers mainly position themselves within a hybridising 'progressivist /professional teacher' discourse, as a discourse of resistance to 'performative' discourse. In adapting their pedagogies, the teachers are in some degree taking the language and world view of performativity into their own vocabularies and practices. The discursive picture I have mapped is complex and contradictory. On one hand, the 'progressivist /professional teacher' discourse appears to endure and to take strength from the articulation into it of elements of performative discourse, creating new possibilities for discursive transformation. On the other hand, there are signs that performative discourse is colonising and subsuming progressivist /professional teacher discourse. At times, both of these tendencies are apparent in the one text. Six micropractices of resistance are identified within the texts: 'rational critique', 'objectification', 'subversion', 'refusal', 'humour' and 'the affirmation of desire'. These reflect the teachers' agency in making discursive choices on the micro level of their every day practices. Through those micropractices, the teachers are engaging with and resisting the micropractices and meanings of performativity. I apply the same multi-layered method of analysis to an examination of discursive engagement in pedagogy by analysing a transcript of the teachers' discussion of critical incidents in their classrooms. Their classroom pedagogies are revealed as complex, situated and eclectic. They are combining and integrating their 'embodied' and their 'institutional' powers, both 'seducing' (McWilliam 1995) and 'regulating' (Gore 1993) as they teach. A strong ethical project is apparent in the teachers' sense of social responsibility, in their determination to adhere to valued traditions of previous times, and in their critical self-awareness of the ways in which they use their institutional and embodied powers in the classroom. Finally, l look back on the findings, and reflect on the possibilities of discursive engagement and the politics of discourse as a framework for more strategic practice in the current context. This research provides grounds for hope that, by becoming more self-conscious about how we engage discursively, we might become more strategic in our everyday professional practice. Not withstanding the constraints (evident in this study) which limit the strategic potential of the politics of discourse, there is space for teachers to become more reflexive in their professional, pedagogical and political praxis. Development of more deliberate, self-reflexive praxis might lead to a 'postmodern democratic polities' (Yeatman 1994: 112) which would challenge the performative state and the system of globalised capital which it serves. Short abstract Adult literacy and basic education (ALBE) teachers have experienced a period of dramatic policy change in recent years; in particular, the introduction of competency-based assessment and competitive tendering for program funds. 'Discourse politics' provides a way of theorising the interplay between policy-mediated institutional change and teachers' practice. The focus of this study is 'discursive engagement'; how teachers are engaged by and are engaging with discourses of performativity. Through two action research projects, texts were generated of teachers talking and writing about how they were responding to the challenges, and developing their pedagogies in the new policy environment. These texts have been analysed and several patterns of discursive engagement delineated, named and illustrated. The strategic potential of 'discourse polities' is explored in the light of the findings.

Semantic and pedagogical aspects of affixation in Bahasa Indonesia

This thesis analyses eleven affixes sampled from a range of contemporary writings in Bahasa Indonesia. Though assumed to be basic, these affixes cause difficulties for tertiary-level non-native learners, thus suggesting the need for alternative materials and methods of instruction.

Discursive recontextualization in a public health setting

The authors discuss discursive recontextualization as a process of discursive change in which stable referents may be recombined. As such, discursive recontextualization recognizes the interplay of both stability and instability without necessarily privileging the latter. Drawing on intertextual document analysis of a series of public reports published in the wake of a major health policy initiative in Victoria, Australia— Health to 2050—the authors identify a discursive pattern in which descriptions of a disaggregation from large Health Care Networks to smaller Metropolitan Health Services echo those of an earlier aggregation of individual hospitals into the Health Care Networks. The authors suggest that future research into discourse and organizational change will benefit from greater attention to stabilization and such recontextualization as well as to fluidity and instability. They examine implications for change agents and for researchers in the field.

Picturing the nation : The Celtic periphery as discursive other in the archaeological displays of the museum of Scotland

Using the archaeological displays at the Museum of Scotland in Edinburgh, this paper examines the exhibition as a site of identity creation through the negotiations between categories of same and Other. Through an analysis of the poetics of display, the paper argues that the exhibition constructs a particular relationship between the Celtic Fringe and Scottish National identity that draws upon the historical discourses of the Highlands and Islands of Scotland as a place and a time 'apart'. This will be shown to have implications for the display of archaeological material in museums but also for contemporary understandings of Scottish National identity.

Semantic and layered protein function prediction from PPI networks

Background The past few years have seen a rapid development in novel high-throughput technologies that have created large-scale data on protein-protein interactions (PPI) across human and most model species. This data is commonly represented as networks, with nodes representing proteins and edges representing the PPIs. A fundamental challenge to bioinformatics is how to interpret this wealth of data to elucidate the interaction of patterns and the biological characteristics of the proteins. One significant purpose of this interpretation is to predict unknown protein functions. Although many approaches have been proposed in recent years, the challenge still remains how to reasonably and precisely measure the functional similarities between proteins to improve the prediction effectiveness.

Results We used a Semantic and Layered Protein Function Prediction (SLPFP) framework to more effectively predict unknown protein functions at different functional levels. The framework relies on a new protein similarity measurement and a clustering-based protein function prediction algorithm. The new protein similarity measurement incorporates the topological structure of the PPI network, as well as the protein's semantic information in terms of known protein functions at different functional layers. Experiments on real PPI datasets were conducted to evaluate the effectiveness of the proposed framework in predicting unknown protein functions.

Conclusion The proposed framework has a higher prediction accuracy compared with other similar approaches. The prediction results are stable even for a large number of proteins. Furthermore, the framework is able to predict unknown functions at different functional layers within the Munich Information Center for Protein Sequence (MIPS) hierarchical functional scheme. The experimental results demonstrated that the new protein similarity measurement reflects more reasonably and precisely relationships between proteins.