Digital Commons Network^™

Utilisation Of Iron Ore Tailings As Aggregates In Concrete, Francis Atta Kuranchie, Sanjay Kumar Shukla, Daryoush Habibi, Alireza Mohyeddin

Research outputs 2014 to 2021

Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5. The concrete were cured for 1, 2, 3, 7, 14 and 28 days. The properties of the concrete such as workability, durability, density, compressive strength and indirect tensile strength were tested. A controlled mix of concrete was also prepared in similar way using conventional materials …

Estimation Of Bias With The Single-Zone Assumption In Measurement Of Residential Air Exchange Using The Perfluorocarbon Tracer Gas Method, K Van Ryswyk, L. Wallace, D. Fugler, M. Macneill, M. E. Heroux, M. D. Gibson, J. R. Guernsey, W. Kindzierski, A. J. Wheeler

Research outputs 2014 to 2021

Residential air exchange rates (AERs) are vital in understanding the temporal and spatial drivers of indoor air quality (IAQ). Several methods to quantify AERs have been used in IAQ research, often with the assumption that the home is a single, well‐mixed air zone. Since 2005, Health Canada has conducted IAQ studies across Canada in which AERs were measured using the perfluorocarbon tracer (PFT) gas method. Emitters and detectors of a single PFT gas were placed on the main floor to estimate a single‐zone AER (AER1z). In three of these studies, a second set of emitters and detectors were deployed in …

Pre-Service Teachers Linking Their Metalinguistic Knowledge To Their Practice: A Functional Approach, Anne Thwaite

Research outputs 2014 to 2021

Existing work in Anglophone countries has raised concerns regarding teachers’ knowledge about language (KAL); this may well be an issue in other countries also, with notable exceptions such as Finland. In Australia, with the introduction of the new Australian Curriculum, the question of teacher KAL has become crucial. Teachers, both practising and pre-service, generally have some knowledge about language as an object, usually including the text structures of particular school genres and information about sentence structure and word classes. This knowledge may be based on traditional grammar and may not be well applied above the sentence level. Teachers may also …

Climate-Adjusted Provenancing: A Strategy For Climate-Resilient Ecological Restoration, Suzanne M. Prober, Margaret Byrne, Elizabeth H. Mclean, Dorothy A. Steane, Brad M. Potts, Rene E. Vaillancourt, William D. Stock

Research outputs 2014 to 2021

Investments in ecological restoration are estimated at $US 2 trillion per annum worldwide and are increasing rapidly (Cunningham, 2008; Williams et al., 2014). These investments are occurring in an environment of accelerated climate change that is projected to continue into the next century, yet they currently take little account of such change. This has significant implications for the long-term success of restoration plantings across millions of hectares, with germplasm used in current restoration efforts potentially poorly-adapted to future climates. New approaches that optimize the climate-resilience of these restoration efforts are thus essential (Breed et al., 2013; Williams et al., 2014; …

Eccentric Loading Increases Peak Torque Angle Of The Ankle Plantar Flexors In Healthy Volunteers, Matthew Wellisch, Peter Hamer, Luke Hopper, Max Bulsara, James Debenham

Research outputs 2014 to 2021

Eccentric loading of the ankle plantar Flexor's (PF) has demonstrated clinical efficacy in the conservative treatment of Achilles tendinopathy, however, its mechanism of therapeutic benefit remains unclear. The purpose of this study was to examine the effects of PF eccentric loading on PF angle to peak torque (AtPT), peak torque (PT) and lower limb vertical stiffness. Thirty healthy volunteers were randomised to an eccentric (n=15) or concentric (n=13) exercise group. A 10-week loading programme of the ankle plantar flexors was completed. AtPT, PT and vertical stiffness were compared within and between groups before and after the interventions. AtPT increased in …

Overview Of Australian Indigenous Health Status, 2014, Jane Burns, Samantha Burrow, Neil Drew, Michelle Elwell, Caitlin Gray, Millie Harford-Mills, Joanne Hoareau, Renee Lynch, Andrea Macrae, Trish O'Hara, Christine Potter, Kathy Ride, Avinna Trzesinski

Research outputs 2014 to 2021

The main purpose of the Overview is to provide a comprehensive summary of the most recent indicators of the health and current health status of Australia’s Aboriginal and Torres Strait Islander peoples. It has been prepared by the Australian Indigenous HealthInfoNet as a part of our contribution to ‘closing the gap’ in health between Aboriginal and Torres Strait Islander people and other Australians by making relevant, high quality knowledge and information easily accessible to policy makers, health service providers, other health professionals including Health workers, program managers, clinicians, researchers, students and the general community.

The initial sections of this Overview …

Electrowetting Force And Velocity Dependence On Fluid Surface Energy, Qi Ni, Daniel E. Capecci, Nathan B. Crane

Faculty Publications

Electrowetting on Dielectric is a phenomenon in which the shape and apparent contact angle of a droplet changes when an electric field is applied across the droplet interface. If the field is asymmetric with respect to the droplet, then a net force can be applied to the droplet. In this work, we have measured the electrowetting force by confining the droplet shape beneath a glass plate and measuring the force on the plate. The force was measured as a function of voltage for a range of fluids with different surface energy. Measured forces show excellent agreement with predictions based on …

Stress-Limiting Test Structures For Rapid Low-Cost Strength And Stiffness Assessment, Andrew Katz, Craig P. Lusk, Nathan B. Crane

Faculty Publications

Purpose: Evaluate the use of a simple printed geometry to estimate mechanical properties (elastic modulus, yield strength) with inexpensive test equipment.

Design Methodology/Approach: Test geometry is presented that enables controlled strains with manual deformation and repeatable measurement of vibrational frequencies. This is tested with multiple FDM machines to assess measurement accuracy and repeatability. Printing orientation and some printing parameters are varied to assess the measurement sensitivity.

Findings: The test methods show good correlation with manufacturer material specifications in the X-Y plane and reported elastic strain limits. It is also sensitive to printing orientation and printing parameters.

Research Limitations/Implications: Further work …

A Multi-Experimental Examination Of Analyzing Mouse Cursor Trajectories To Gauge Subject Uncertainty, Jeffrey L. Jenkins, Ross Larsen, Robert Bodily, Daniel Sandberg, Parker Williams, Steve Stokes, Spencer Harris, Joseph S. Valacich

Faculty Publications

Providing information online is pervasive in human-computer interactions. While providing information, people may deliberate their responses. However, organizations only receive the end-result of this deliberation and therefore have no contextual information surrounding the response. One type of contextual information includes knowing people’s response uncertainty while providing information. Knowing uncertainty allows organizations to weigh responses, ask follow-up questions, provide assistance, or identify problematic instructions or responses. This paper explores how mouse cursor movements may indicate uncertainty in a human-computer interaction context. Specifically, it hypothesizes how uncertainty on multiple-choice questions influences a mouse-movement statistic called area-under-the-curve (AUC). We report the result of …

Behaviorally Measuring Ease-Of-Use By Analyzing Users’ Mouse Cursor Movements, Jeffrey L. Jenkins, Joseph S. Valacich

Faculty Publications

Ease-of-use—the extent to which a technology is free of effort—is a hallmark of many successful websites and is a predictor of important user outcomes including intentions to use a system and a system’s perceived usefulness. We propose a behavior-based measure of ease-of-use based on the analysis of users’ mouse cursor movements. As a basis for this measure, we explain how ease-of-use influences the precision of users’ mouse cursor movements, extending Attentional Control Theory and the Response Activation Model. We propose two mousing statistics—Normalized Area under the Curve and Normalized Additional Distance—and predict that they are correlated with PEOU and can …

The Role Of Mobile-Computing Self-Efficacy In Consumer Information Disclosure, Mark J. Keith, Jeffry Babb, Paul Benjamin Lowry, Christopher Furner, Amjad Abdullat

Faculty Publications

Smartphones are increasingly penetrating business and consumer markets, and mobile applications (apps) have engendered a large and innovative market. Whereas apps are useful, they also present new forms of privacy risk associated with users’ personal and location data. However, these dangers do not appear to increase the perceived risk or reduce the trust consumers demonstrate when using apps. Many information technology (IT) trust indicators are well documented, such as the quality of the IT, trust assurances, brand recognition and social influences. However, these traditional indicators appear to have a lesser impact on the adoption of mobile commerce via apps because …

The Decibel Scoreplayer - A Digital Tool For Reading Graphic Notation, Cat Hope, Lindsay R. Vickery Dr

Research outputs 2014 to 2021

In 2009, the Decibel new music ensemble based in Perth, Western Australia was formed with an associated manifesto that stated “Decibel seek to dissolve any division between sound art, installation and music by focusing on the combination of acoustic and electronic instruments” [1]. The journey provided by this focus led to a range of investigations into different score types, resulting in a re-writing of the groups statement to “pioneering electronic score formats, incorporating mobile score formats and networked coordination performance environments” [2]. This paper outlines the development of Decibel’s work with the ‘screen score’, including the different stages of the …

Using Text Sets To Foster Critical Inquiry, Dawan Coombs, Devery Bellingham

Faculty Publications

This article explores three ways a teacher incorporated text sets into her seventh-grade classroom to foster authentic inquiry. Student reflections suggest this approach helped them cultivate questioning, researching, and cooperative learning skills that became lasting habits of inquiry and helped them succeed on core tests.

The Power Of Story: Narrative Inquiry As A Methodology In Nursing Research, Carol C. Wang, Sara K. Geale

Research outputs 2014 to 2021

The aim of this paper is to explore the essential elements and value of narrative inquiry in nursing research. We propose that understanding a previous experience allows the nurse researcher an "insider view" and hence a deeper understanding of the issues that arise in the relationship between participant and researcher. We suggest that narrative inquiry in nursing research offers a particular way of caring about how knowledge is produced. Nursing science would benefit from the understanding that health and nursing practices are dynamic processes characterized by the continuous interaction of human thought and behaviour that continuously 'pumps' into personal, social …

Separate Phonemes /Ɔr/ Merging? The Cord-Card Merger In Real-Time, Joseph A. Stanley

Faculty Publications

In sociolinguistics, when analyzing language change across time, studies in apparent time are the norm with the assumption that language does not change in adult speech (Chambers & Trudgill 1998). However, some research has provided evidence that change does occur within the individual during their lifetime (Prince 1987; Harrington, Palethorpe & Watson 2000). This study shows further evidence by analyzing the cord-card merger over 40 years of speech from a Utah native.

Two mergers combine what was historically a three-way distinction of /or/, /ɔr/, and /ɑr/ to just two, with /ɔr/ either merging upward in the hoarse-horse merger, or downward …

Brother Bell’S Audience Design: Forms Of Address Mong Latter-Day Saint Young Adults, Joseph A. Stanley

Faculty Publications

In this paper, I analyze forms of address between Latter-day Saint (Mormon) young adults. In American English, title + last name (TLN) is typically used for older, superior, or unfamiliar addressees while first name (FN) is directed towards younger, subordinate, or familiar addressees (Brown & Gilman 1960). In the Mormon context, the TLN form is Brother or Sister followed by a surname (Fogg 1990). While many other studies analyze address forms between individuals with varying power or age differences (Brown & Ford 1961; Wood & Ryan 1991; Murray 2002; Dickey 1997), this study focuses those who are of similar age …

The Multidimensional Quality Metrics (Mqm) Framework: A New Framework For Translation Quality Assessment, Valerie Mariana, Troy L. Cox, Alan Melby

Faculty Publications

Determining translation quality requires a precise measure of the traits being examined. This article evaluates a new framework for translation quality evaluation, Multidimensional Quality Metrics (MQM), to the task of grading student translations. It demonstrates the viability (i.e. the practicality, validity and reliability) of using the MQM framework by novice raters to judge translations based on the American Translators Association’s translator certification exam grading system. The data gathered for this study were drawn from 29 student translations of a single news story that were rated by nine novice and two expert raters. The study used average time on task, correlations …

Metazoan Parasites Of Antarctic Fishes, Mehmet Cemal Oğuz, Yahya Tepe, Mark C. Belk, Richard A. Heckmann, Burçak Aslan, Meryem Gürgen, Rodney A. Bray, Ülker Akgül

Faculty Publications

To date, there have been nearly 100 papers published on metazoan parasites of Antarctic fishes, but there has not yet been any compilation of a species list of fish parasites for this large geographic area. Herein, we provide a list of all documented occurrences of monogenean, cestode, digenean, acanthocephalan, nematode, and hirudinean parasites of Antarctic fishes. The list includes nearly 250 parasite species found in 142 species of host fishes. It is likely that there are more species of fish parasites, which are yet to be documented from Antarctic waters.

Circulating Melanoma Cell Subpopulations: Their Heterogeneity And Differential Responses To Treatment, Elin S. Gray, Anna L. Reid, Samantha Bowyer, Leslie Calapre, Kelvin Siew, Robert Pearce, Lester Cowell, Markus H. Frank, Michael Millward, Mel R. Ziman Dr

Research outputs 2014 to 2021

Metastatic melanoma is a highly heterogeneous tumor; thus, methods to analyze tumor-derived cells circulating in blood should address this diversity. Taking this into account, we analyzed, using multiparametric flow cytometry, the co-expression of the melanoma markers melanoma cell adhesion molecule and melanoma-associated chondroitin sulphate proteoglycan and the tumor-initiating markers ATP-binding cassette sub-family B member 5 (ABCB5), CD271, and receptor activator of NF-κβ (RANK) in individual circulating tumor cells (CTCs) from 40 late-stage (III-IV) and 16 early-stage (I-II) melanoma patients. CTCs were heterogeneous within and between patients, with limited co-expression between the five markers analyzed. Analysis of patient matched blood and …

The Uyghur Population And Genetic Susceptibility To Type 2 Diabetes: Potential Role For Variants In Cdkal1, Jazf1, And Igf1 Genes, Manshu Song, Feifei Zhao, Longjin Ran, Mamatyusupu Dolikun, Lijuan Wu, Lijuan Ge, Hao Dong, Qing Gao, Yanchun Zhai, Ling Zhang, Yuxiang Yan, Fen Liu, Xinghua Yang, Xiuhua Guo, Youxin Wang, Wei Wang

Research outputs 2014 to 2021

Substantial evidence suggests that type 2 diabetes mellitus (T2DM) is a multi-factorial disease with a strong genetic component. A list of genetic susceptibility loci in populations of European and Asian ancestry has been established in the literature. Little is known on the inter-ethnic contribution of such established functional polymorphic variants. We performed a case-control study to explore the genetic susceptibility of 16 selected T2DM-related SNPs in a cohort of 102 Uyghur objects (51 cases and 51 controls). Three of the 16 SNPs showed significant association with T2DM in the Uyghur population. There were significant differences between the T2DM and control …

Solving Russian Velars: Palatalization, The Lexicon And Gradient Contrast Utilization, Jeffery R. Parker

Faculty Publications

Палатализованные («мягкие») задненебные согласные в русском языке имеют особый статус, поскольку их появление можно предсказать лишь частично. Эти согласные являются примером часто встречающихся фонологических отношений, в которых звуки могут быть словоразличительными, но используются лишь в некоторых контекстах и/или словоформах. Такие «промежуточные фонологические отношения» (ОоШзткЬ 1995) представляют собой проблему для традиционных фонологических теорий, в которых звуки делятся на предсказуемые (аллофоны; содержатся в грамматике) и непредсказуемые (фонемы; содержатся в лексиконе). Таким образом, для научно-теоретической классификации вышеуказанных промежуточных фонологических отношений необходимо будет пересмотреть существующие предположения о природе и количестве информации, содержащейся в лексиконе. В данной статье я показываю, что и мягкие, и твердые …

Evolution Of Testosterone Treatment Over 25 Years: Symptom Responses, Endocrine Profiles And Cardiovascular Changes, Malcolm Carruthers, Paul Cathcart, Mark R. Feneley

Research outputs 2014 to 2021

Introduction: Testosterone treatment has evolved rapidly over the past 25 years as new, more effective and convenient methods have become available. This study reports experience with seven different methods, introduced on the market in the UK. Aim: To establish the symptom response when testosterone treatment was initiated on the basis of clinical features and symptoms of androgen deficiency, and the resulting endocrine, biochemical and physiological responses. Methods: Of 2693 patients attending the 3 Men’s Health Centers – The UK Androgen Study (UKAS), 2247 were treated. Treatments included pellet implants, oral testosterone undecanoate (Testocaps), mesterolone (Proviron), testosterone gel (Testogel), testosterone scrotal …