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Full-Text Articles in Social and Behavioral Sciences

Embedding External Referencing Of Standards In Higher Education: Collaborative Relationships Are The Key, Lesley Sefcik, Simon Bernard Bedford, Peter Czech, Judith Smith, John Yorke Jan 2018

Embedding External Referencing Of Standards In Higher Education: Collaborative Relationships Are The Key, Lesley Sefcik, Simon Bernard Bedford, Peter Czech, Judith Smith, John Yorke

Deputy Vice-Chancellor (Academic) - Papers

External referencing of assessment and students’ achievement standards is a growing priority area within higher education, which is being pressured by government requirements to evidence outcome attainment. External referencing benefits stakeholders connected to higher education by helping to assure that assessments and standards within courses are appropriate and comparable among institutions. External referencing takes many forms, which have different resourcing requirements, outcomes, and operational strengths and challenges. This paper describes the External Referencing of Standards (ERoS) approach developed, tested and adopted by a university consortium. ERoS draws on the strengths of existing methodologies to produce an evolved model that is ...


Towards Sustainable Technology-Enhanced Innovation In Higher Education: Advancing Learning Design By Understanding And Supporting Teacher Design Practice, Sue Bennett, Lori Lockyer, Shirley Agostinho Jan 2018

Towards Sustainable Technology-Enhanced Innovation In Higher Education: Advancing Learning Design By Understanding And Supporting Teacher Design Practice, Sue Bennett, Lori Lockyer, Shirley Agostinho

Faculty of Social Sciences - Papers

Improving teacher design promises to be a scalable, sustainable approach to building capacity amongst a workforce faced with complex and evolving drivers of change in higher education worldwide. While design has long been recognised as a routine part of teaching, there has been renewed interest in supporting and understanding the design work that teachers do to foster innovation, particularly in technology-enhanced learning, at institutional scale by influencing teachers' practices. Re-framing teaching as design usefully emphasises the creative problem-solving needed to balance pedagogical, logistical and technical considerations within specific educational contexts, tailored to learners' needs. There is potential for this re-framing ...


Application Of Geoinclusions For Sustainable Rail Infrastructure Under Increased Axle Loads And Higher Speeds, Buddhima Indraratna, Fernanda Bessa Ferreira, Yujie Qi, Ngoc Trung Ngo Jan 2018

Application Of Geoinclusions For Sustainable Rail Infrastructure Under Increased Axle Loads And Higher Speeds, Buddhima Indraratna, Fernanda Bessa Ferreira, Yujie Qi, Ngoc Trung Ngo

Faculty of Engineering and Information Sciences - Papers: Part B

Given the ongoing demand for faster trains for carrying heavier loads, conventional ballasted railroads require considerable upgrading in order to cope with the increasing traffic-induced stresses. During train operations, ballast deteriorates due to progressive breakage and fouling caused by the infiltration of fine particles from the surface or mud-pumping from the underneath layers (e.g. sub-ballast, sub-grade), which decreases the load bearing capacity, impedes drainage and increases the deformation of ballasted tracks. Suitable ground improvement techniques involving geosynthetics and resilient rubber sheets are commonly employed to enhance the stability and longevity of rail tracks. This keynote paper focuses mainly on ...


The Guide To Fostering Asynchronous Online Discussion In Higher Education, Irina Verenikina, Pauline T. Jones, Janine Delahunty Jan 2017

The Guide To Fostering Asynchronous Online Discussion In Higher Education, Irina Verenikina, Pauline T. Jones, Janine Delahunty

Deputy Vice-Chancellor (Academic) - Papers

No abstract provided.


Topological Spaces Associated To Higher-Rank Graphs, Alexander Kumjian, David Pask, Aidan Sims, Michael F. Whittaker Jan 2016

Topological Spaces Associated To Higher-Rank Graphs, Alexander Kumjian, David Pask, Aidan Sims, Michael F. Whittaker

Faculty of Engineering and Information Sciences - Papers: Part A

We investigate which topological spaces can be constructed as topological realisations of higher-rank graphs. We describe equivalence relations on higher-rank graphs for which the quotient is again a higher-rank graph, and show that identifying isomorphic co-hereditary subgraphs in a disjoint union of two rank-k graphs gives rise to pullbacks of the associated C*-algebras. We describe a combinatorial version of the connected-sum operation and apply it to the rank-2-graph realisations of the four basic surfaces to deduce that every compact 2-manifold is the topological realisation of a rank-2 graph. We also show how to construct k-spheres and wedges of k-spheres ...


Book Review: Fostering Self-Efficacy In Higher Education Students, Janine Delahunty Jan 2016

Book Review: Fostering Self-Efficacy In Higher Education Students, Janine Delahunty

Deputy Vice-Chancellor (Academic) - Papers

What is self-efficacy, why is it worthy of attention in higher education, how are selfefficacy beliefs linked to teaching and learning excellence and what is "excellence" anyway? These are some points of discussion found in the first few pages of Laura Ritchie's book, directing the reader towards strategies in later chapters that are drawn from real-life situations aimed at helping the practitioner recognise and apply principles for building strong self-efficacy beliefs in their students. The author argues that the impact of self-efficacy on learning is "fundamental to everything" (p. vii); she writes from her years of teaching and research ...


Opportunity Through Online Learning: Experiences Of First-In-Family Students In Online Open-Entry Higher Education, Cathy Stone, Sarah Elizabeth O'Shea, Josephine May, Janine Delahunty, Zoe Partington Jan 2016

Opportunity Through Online Learning: Experiences Of First-In-Family Students In Online Open-Entry Higher Education, Cathy Stone, Sarah Elizabeth O'Shea, Josephine May, Janine Delahunty, Zoe Partington

Faculty of Social Sciences - Papers

Online learning has an important place in widening access and participation in higher education for diverse student cohorts. One cohort taking up online study in increasing numbers is that of mature-age, first-in-family students. First-in-family is defined as those who are the first in their immediate family, including parents, siblings, partners and children, to undertake university studies. This paper looks at the experience of 87 first-in-family students, for whom the opportunity to study open-entry, online undergraduate units through Open Universities Australia made it possible for them to embark on a university education. Using a qualitative methodology, in-depth interviews and surveys were ...


Avoiding The Manufacture Of 'Sameness': First-In-Family Students, Cultural Capital And The Higher Education Environment, Sarah Elizabeth O'Shea Jan 2016

Avoiding The Manufacture Of 'Sameness': First-In-Family Students, Cultural Capital And The Higher Education Environment, Sarah Elizabeth O'Shea

Faculty of Social Sciences - Papers

Drawing upon Bourdieu's theories of social and cultural capital, a number of studies of the higher education environment have indicated that students who are first-in-family to come to university may lack the necessary capitals to enact success. To address this issue, university transition strategies often have the primary objective of 'filling students up' with legitimate forms of cultural capital required by the institution. However, this article argues that such an approach is fundamentally flawed, as students can be either framed as deficit or replete in capitals depending on how their particular background and capabilities are perceived. Drawing on interviews ...


Shifting The Blame In Higher Education - Social Inclusion And Deficit Discourses, Sarah Elizabeth O'Shea, Pauline Lysaght, Jen Roberts, Valerie Harwood Jan 2016

Shifting The Blame In Higher Education - Social Inclusion And Deficit Discourses, Sarah Elizabeth O'Shea, Pauline Lysaght, Jen Roberts, Valerie Harwood

Faculty of Social Sciences - Papers

The principles of social inclusion have been embraced by institutions across the higher education sector but their translation into practice through pedagogy is not readily apparent. This paper examines perceptions of social inclusion and inclusive pedagogies held by academic staff at an Australian university. Of specific interest were the perceptions of teaching staff with regard to diverse student populations, particularly students from low socio-economic (LSES) backgrounds, given the institution's reasonably high proportion of LSES student enrolment (14%). A mixed-method approach was utilised: (i) in-depth interviews with a representative sample of academic staff and (ii) an online survey targeting all ...


Lean Body Mass Associated With Upper Body Strength In Healthy Older Adults While Higher Body Fat Limits Lower Extremity Performance And Endurance, Karen E. Charlton, Marijka Batterham, Kelly Langford, Jenna Lateo, Erin Brock, Karen L. Walton, Philippa M. Lyons-Wall, Katie Eisenhauer, Nick Green, Cameron Mclean Jan 2015

Lean Body Mass Associated With Upper Body Strength In Healthy Older Adults While Higher Body Fat Limits Lower Extremity Performance And Endurance, Karen E. Charlton, Marijka Batterham, Kelly Langford, Jenna Lateo, Erin Brock, Karen L. Walton, Philippa M. Lyons-Wall, Katie Eisenhauer, Nick Green, Cameron Mclean

Faculty of Science, Medicine and Health - Papers: part A

Impaired strength adversely influences an older person's ability to perform activities of daily living. A cross-sectional study of 117 independently living men and women (age = 73.4 9.4 year; body mass index (BMI) = 27.6 4.8 kg/m2) aimed to assess the association between body composition and: (1) upper body strength (handgrip strength, HGS); (2) lower extremity performance (timed up and go (TUG) and sit to stand test (STS)); and (3) endurance (6-minute walk (SMWT). Body composition (% fat; lean body mass (LBM)) was assessed using bioelectrical impedance. Habitual physical activity was measured using the Minnesota Leisure Time ...


Von Neumann Algebras Of Strongly Connected Higher-Rank Graphs, Marcelo Laca, Nadia S. Larsen, Sergey Neshveyev, Aidan Sims, Samuel B. Webster Jan 2015

Von Neumann Algebras Of Strongly Connected Higher-Rank Graphs, Marcelo Laca, Nadia S. Larsen, Sergey Neshveyev, Aidan Sims, Samuel B. Webster

Faculty of Engineering and Information Sciences - Papers: Part A

We investigate the factor types of the extremal KMS states for the preferred dynamics on the Toeplitz algebra and the Cuntz-Krieger algebra of a strongly connected finite (Formula presented.)-graph. For inverse temperatures above 1, all of the extremal KMS states are of type (Formula presented.). At inverse temperature 1, there is a dichotomy: if the (Formula presented.)-graph is a simple (Formula presented.)-dimensional cycle, we obtain a finite type (Formula presented.) factor; otherwise we obtain a type III factor, whose Connes invariant we compute in terms of the spectral radii of the coordinate matrices and the degrees of ...


"Are We There Yet?": Making Sense Of Transition In Higher Education, Jeannette Stirling, Louise C. Rossetto Jan 2015

"Are We There Yet?": Making Sense Of Transition In Higher Education, Jeannette Stirling, Louise C. Rossetto

Deputy Vice-Chancellor (Academic) - Papers

This paper reviews a first year transition program first implemented in 2011 and designed for students commencing higher education at the regional campuses of an Australian university. A significant proportion of students attending these campuses are mature age, the first in family to attempt university study, Indigenous, and/or from low socio-economic backgrounds. Our project aims were to facilitate academic participation and hence retention in a higher education environment that relies on various multimedia technologies and blended learning models. Ongoing evaluations of the project clearly indicate its efficacy. Even so, longitudinal analyses raise questions about how current social inclusion policy ...


Book Review: The Palgrave Handbook Of Critical Thinking In Higher Education, Edited By Martin Davies And Ronald Barnett, Usa: Palgrave Macmillan, Judie Cross Jan 2015

Book Review: The Palgrave Handbook Of Critical Thinking In Higher Education, Edited By Martin Davies And Ronald Barnett, Usa: Palgrave Macmillan, Judie Cross

Faculty of Social Sciences - Papers

"If there was one life skill everyone on the planet needed, it was the ability to think with critical objectivity" (Lanyon 2011). There is little doubt Martin Davies and Ronald Barnett (2015) would agree with this pronouncement if The Palgrave Handbook of Critical Thinking in Higher Education were a fair indication because Davies and Barnett specifically compiled the chapters in this book in order to share their wide-ranging knowledge and insight into contemporary understandings about and applications of critical thinking (CT) in higher education. They believe this volume is a much needed text centred in the evolving world of higher ...


'University Wasn't Spoken About At Home, It Was Just Assumed That We Would Start Working…': First-In-Family Students, Family Capital And Higher Education Participation, Sarah Elizabeth O'Shea Jan 2015

'University Wasn't Spoken About At Home, It Was Just Assumed That We Would Start Working…': First-In-Family Students, Family Capital And Higher Education Participation, Sarah Elizabeth O'Shea

Faculty of Social Sciences - Papers

The increases in the number of students attending higher education, particularly those who are the first in their immediate family to attend university provided the impetus for the study outlined in this article. Whilst previous research has explored the qualitative experience of being a first in family student, very few studies have explicitly focussed on how attending university interacts and impacts upon the immediate family of the learner. Drawing upon in-depth semi-structured interviews, this article will detail the findings from a small-scale study conducted in an Australian university that explored the interaction of the family home place and students' enactment ...


"I 'Feel' Like I Am At University Even Though I Am Online." Exploring How Students Narrate Their Engagement With Higher Education Institutions In An Online Learning Environment, Sarah Elizabeth O'Shea, Cathy Stone, Janine Delahunty Jan 2015

"I 'Feel' Like I Am At University Even Though I Am Online." Exploring How Students Narrate Their Engagement With Higher Education Institutions In An Online Learning Environment, Sarah Elizabeth O'Shea, Cathy Stone, Janine Delahunty

Faculty of Social Sciences - Papers

This article outlines a collaborative study between higher education institutions in Australia, which qualitatively explored the online learning experience for undergraduate and postgraduate students. The project adopted a narrative inquiry approach and encouraged students to story their experiences of this virtual environment, providing a snapshot of how learning is experienced by those undertaking online studies. The study explores what impacted upon students' engagement in this environment and how different facets of their learning experience made a qualitative difference to how individuals enacted engagement. Drawing upon Sharon Pittaway's engagement framework, the article seeks to foreground student voice as the learners ...


Skew-Products Of Higher-Rank Graphs And Crossed Products By Semigroups, Benjamin Maloney, David Pask, Iain Raeburn Jan 2014

Skew-Products Of Higher-Rank Graphs And Crossed Products By Semigroups, Benjamin Maloney, David Pask, Iain Raeburn

Faculty of Engineering and Information Sciences - Papers: Part A

We consider a free action of an Ore semigroup on a higher-rank graph, and the induced action by endomorphisms of the C ∗-algebra of the graph. We show that the crossed product by this action is stably isomorphic to the C ∗-algebra of a quotient graph. Our main tool is Laca’s dilation theory for endomorphic actions of Ore semigroups on C ∗-algebras, which embeds such an action in an automorphic action of the enveloping group on a larger C ∗-algebra.


The Primitive Ideals Of The Cuntz-Krieger Algebra Of A Row-Finite Higher-Rank Graph With No Sources, Toke Meier Carlsen, Sooran Kang, Jacob Shotwell, Aidan Sims Jan 2014

The Primitive Ideals Of The Cuntz-Krieger Algebra Of A Row-Finite Higher-Rank Graph With No Sources, Toke Meier Carlsen, Sooran Kang, Jacob Shotwell, Aidan Sims

Faculty of Engineering and Information Sciences - Papers: Part A

We catalogue the primitive ideals of the Cuntz–Krieger algebra of a row-finite higher-rank graph with no sources. Each maximal tail in the vertex set has an abelian periodicity group of finite rank at most that of the graph; the primitive ideals in the Cuntz–Krieger algebra are indexed by pairs consisting of a maximal tail and a character of its periodicity group. The Cuntz–Krieger algebra is primitive if and only if the whole vertex set is a maximal tail and the graph is aperiodic.


Kms States On C*-Algebras Associated To Higher-Rank Graphs, Astrid An Huef, Marcelo Laca, Iain Raeburn, Aidan Sims Jan 2014

Kms States On C*-Algebras Associated To Higher-Rank Graphs, Astrid An Huef, Marcelo Laca, Iain Raeburn, Aidan Sims

Faculty of Engineering and Information Sciences - Papers: Part A

Consider a higher rank graph of rank k. Both the Cuntz-Krieger algebra and Toeplitz-Cuntz-Krieger algebra of the graph carry natural gauge actions of the torus Tk, and restricting these guage actions to one parameter subgroups of Tk gives dynamical systems involving actions of the real line. We study the KMS states of these dynamical systems. We find that for large inverse temperatures B, the simplex of KMS B states of the Toeplitz-Cuntz-Krieger algebra has dimension d one less than the number of vertices in the graph. We also show that there is a preferred dynamics for which there is a ...


Twisted C-Algebras Associated To Finitely Aligned Higher-Rank Graphs, Aidan Sims, Benjamin Whitehead, Michael Whittaker Jan 2014

Twisted C-Algebras Associated To Finitely Aligned Higher-Rank Graphs, Aidan Sims, Benjamin Whitehead, Michael Whittaker

Faculty of Engineering and Information Sciences - Papers: Part A

We introduce twisted relative Cuntz-Krieger algebras associated to finitely aligned higher-rank graphs and give a comprehensive treatment of their fundamental structural properties. We establish versions of the usual uniqueness theorems and the classification of gauge-invariant ideals. We show that all twisted relative Cuntz- Krieger algebras associated to finitely aligned higher-rank graphs are nuclear and satisfy the UCT, and that for twists that lift to real-valued cocycles, the K-theory of a twisted relative Cuntz-Krieger algebra is independent of the twist. In the final section, we identify a sufficient condition for simplicity of twisted Cuntz-Krieger algebras associated to higher-rank graphs which are ...


Higher Order Or Fractional Order Hardy-Sobolev Type Equations, Wenxiong Chen, Yanqin Fang Jan 2014

Higher Order Or Fractional Order Hardy-Sobolev Type Equations, Wenxiong Chen, Yanqin Fang

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper we consider the following higher order or fractional order Hardy-Sobolev type equation.


Institutional Wide Implementation Of Key Advice For Socially Inclusive Teaching In Higher Education. A Practice Report, Lisa Thomas, Jennifer Heath Jan 2014

Institutional Wide Implementation Of Key Advice For Socially Inclusive Teaching In Higher Education. A Practice Report, Lisa Thomas, Jennifer Heath

Deputy Vice-Chancellor (Academic) - Papers

Government policy and institutional initiatives have influenced increases in enrolment of non-traditional students to Australian universities. For these students, university culture is often incongruent with their own, making it difficult to understand the tacit requirements for participation and success. Academic teaching staff are important in creating socially inclusive learning experiences, particularly in first year subjects. This paper presents an institution-wide approach to enhancing socially inclusive teaching at one Australian university. Underpinned by a framework of "bridging social-incongruity" the initiative was guided by six principles of socially inclusive teaching to support practice as proposed in the 2012 "Effective support of students ...


A Critical Turn In Higher Education Research: Turning The Critical Lens On The Academic Language And Learning Educator, Alisa Percy Jan 2014

A Critical Turn In Higher Education Research: Turning The Critical Lens On The Academic Language And Learning Educator, Alisa Percy

Deputy Vice-Chancellor (Academic) - Papers

This paper suggests that historical ontology, as one form of reflexive critique, is an instructive research design for making sense of the political and historical constitution of the Academic Language and Learning (ALL) educator in Australian higher education. The ALL educator in this paper refers to those practitioners in the field of ALL, whose ethical agency has largely been taken for granted since their slow and uneven emergence in the latter half of the twentieth century. Using the lens of governmentality, genealogical design and archaeological method, the historical ontology proposed in this paper demonstrates how the ethical remit of the ...


Ripples Of Learning -Higher Education Participation, Familial Habitus, Gender And First In Family Female Students, Sarah Elizabeth O'Shea, Josephine May, Cathy Stone Jan 2014

Ripples Of Learning -Higher Education Participation, Familial Habitus, Gender And First In Family Female Students, Sarah Elizabeth O'Shea, Josephine May, Cathy Stone

Faculty of Social Sciences - Papers

Abstract presented at the Gender and Education Association Asia Pacific Biennial Interim Conference, 9-11 December 2014, Melbourne, Australia


Conceptualising Technology Use As Social Practice To Research Student Experiences Of Technology In Higher Education, Sue Bennett Jan 2014

Conceptualising Technology Use As Social Practice To Research Student Experiences Of Technology In Higher Education, Sue Bennett

Faculty of Social Sciences - Papers

The purpose of this paper is to argue for the importance of sociological approaches to educational technology research which can make new advances in the field that complement the existing research base. Such research can address questions of how individuals use technology across different spheres of their lives, including education, and asks what role technology plays in educational institutions and how it interacts academic practices. Research of this kind can tells us much about how we might adopt and adapt technologies from outside education to support teaching and learning. By conceptualising technology use as social practice, rather than as attributes ...


Exploring The Participation Of First In Family Students In University With Particular Reference To How This Impacts Upon Intergenerational Choices Around, And Perceptions Of, Higher Education, Sarah Elizabeth O'Shea Jan 2014

Exploring The Participation Of First In Family Students In University With Particular Reference To How This Impacts Upon Intergenerational Choices Around, And Perceptions Of, Higher Education, Sarah Elizabeth O'Shea

Faculty of Social Sciences - Papers

Abstract of a paper presented at The Forum for Access and Continuing Education's (FACE) 21st Annual Conference, 2-4 July 2014, Salford, United Kingdom


Higher Regular Fat Dairy Consumption Is Associated With Lower Incidence Of Metabolic Syndrome But Not Type 2 Diabetes, J C. Y Louie, V M. Flood, A M. Rangan, G Burlutsky, T P. Gill, B Gopinath, P Mitchell Jan 2013

Higher Regular Fat Dairy Consumption Is Associated With Lower Incidence Of Metabolic Syndrome But Not Type 2 Diabetes, J C. Y Louie, V M. Flood, A M. Rangan, G Burlutsky, T P. Gill, B Gopinath, P Mitchell

Faculty of Science, Medicine and Health - Papers: part A

Background and aims Limited evidence suggests habitual dairy consumption to be protective against metabolic syndrome (MetSyn) and type 2 diabetes among older adults. We assessed the association of baseline consumption of dairy products with the incidence of MetSyn and type 2 diabetes among a cohort of Australian adults aged 49 years and over. Methods and results A validated 145-item semi-quantitative food frequency questionnaire was used to assess food and nutrient intake at baseline. Ten-year incidence of MetSyn and type 2 diabetes were obtained from 1807 and 1824 subjects respectively. Odds ratios (OR) were calculated by discrete time logistic regression modelling ...


Modernisation Of Rail Tracks For Higher Speeds And Greater Freight, B Indraratna, S Nimbalkar, C Rujikiatkamjorn Jan 2013

Modernisation Of Rail Tracks For Higher Speeds And Greater Freight, B Indraratna, S Nimbalkar, C Rujikiatkamjorn

Faculty of Engineering and Information Sciences - Papers: Part A

An efficient transportation infrastructure has become utmost priority for global economic reforms. Railways are designed to provide high speed passenger and heavy haul freight transportation. Ballast is one of important constituents of the rail track however, it experiences excessive deformation and degradation from trains operating at high speeds. In addition, tracks built along coastal areas often undergo large settlements due to soft compressible clay deposits. This leads to progressive track deterioration and necessitates frequent and costly track maintenance. The use of artificial inclusions such as geogrids, geocomposites, shock mats and prefabricated vertical drains (PVDs) is often an attractive design alternative ...


The Game Of Information Systems Higher Education, Mark Freeman, Alison E. Freeman Jan 2013

The Game Of Information Systems Higher Education, Mark Freeman, Alison E. Freeman

Faculty of Engineering and Information Sciences - Papers: Part A

With continual changes in higher education in the field of Information Systems (IS), educators are faced with the question: how can we actively engage each learner in a way that encourages self-direction while developing the ability to independently solve problems? The unique learning characteristics of adult learners must each be considered in the design of learning experiences in higher education environments. Gamification - the use of gaming elements in non-gaming contexts - is one source of opportunities for new and interesting learning experiences. Through discussion of 12 major gaming elements, this paper considers whether gamification can create innovative learning environments for IS ...


Deliberative Governance In Higher Education: The Utility Of John Dryzek's Concept Of Meta-Consensus, Gregory Hampton Jan 2013

Deliberative Governance In Higher Education: The Utility Of John Dryzek's Concept Of Meta-Consensus, Gregory Hampton

Deputy Vice-Chancellor (Academic) - Papers

A rapprochement between managerialism and collegialism has become commonplace within policy discussion on governance within higher education. Processes of deliberation within university governance are suggested as one means of fostering this apparent accord. I suggest that Dryzek's notion of meta-consensus can assist processes of deliberative governance. The concept of meta-consensus describes how disparate discourses can be acknowledged and incorporated within deliberative governance. I illustrate how a process of deliberation characterised the nature of participatory and deliberative teaching policy development within a university through reference to case studies on accommodating student equity and diversity in teaching policy and practice and ...


On The K-Theory Of Twisted Higher-Rank-Graph C*-Algebras, Alex Kumjian, David Pask, Aidan Sims Jan 2013

On The K-Theory Of Twisted Higher-Rank-Graph C*-Algebras, Alex Kumjian, David Pask, Aidan Sims

Faculty of Engineering and Information Sciences - Papers: Part A

We investigate the K-theory of twisted higher-rank-graph algebras by adapting parts of Elliott's computation of the K-theory of the rotation algebras. We show that each 2-cocycle on a higher-rank graph taking values in an abelian group determines a continuous bundle of twisted higher-rank graph algebras over the dual group. We use this to show that for a circle-valued 2-cocycle on a higher-rank graph obtained by exponentiating a real-valued cocycle, the K-theory of the twisted higher-rank graph algebra coincides with that of the untwisted one.