Social and Behavioral Sciences Commons^™

Sustainability And Scalability In Educational Technology Initiatives: Research-Informed Practice, Dale Niederhauser, Sarah Katherine Howard, Joke Voogt, Douglas Agyei, Therese Laferriere, Jo Tondeur, Margaret J. Cox

Faculty of Social Sciences - Papers (Archive)

Although a positive impact of technology interventions on educational practice and student outcomes has been shown in many previous research settings, the use of technology in classrooms and schools is still often superficial and not meeting the potential of technology as envisioned by education reformers and researchers in the field. However, when technology projects have been implemented successfully in educational practice and shown valuable impacts, sustainability within similar contexts is not guaranteed-let alone scaling the initiative to other broader contexts. This article builds on the discussions of the EDUsummIT 2017 Thematic Working Group 9 (TWG9) and the summary report that …

Teaching Young Second Language Learners In Lote Contexts, Honglin Chen, Janica Nordstrom

Faculty of Social Sciences - Papers (Archive)

The study of languages has long been considered to have important social, cognitive and economic benefits for individuals and the nation. In Australia, however, despite its growing strength in linguistic resources and the various Government initiatives, there has been a disturbing decline in languages study by school-aged children in Australia. For example, in the 1940s and 50s, over 40 percent of students graduated with a language (Teese & Polesol, 2003) which had declined to only 12 percent in 2012. In primary schools, aggregated cross-sectoral data from government, private and catholic systems in Sydney and Wollongong indicate that 30-40 percent of …

Postural Stability Predicts The Likelihood Of Cybersickness In Active Hmd-Based Virtual Reality, Benjamin Arcioni, Stephen Palmisano, Deborah M. Apthorp, Juno Kim

Faculty of Social Sciences - Papers (Archive)

2018 Cybersickness is common during virtual reality experiences with head-mounted displays (HMDs). Previously it has been shown that individual differences in postural activity can predict which people are more likely to experience visually-induced motion sickness. This study examined whether such predictions also generalise to the cybersickness experienced during active HMD-based virtual reality. Multisensory stimulation was generated by having participants continuously turn their heads from left to right while viewing the self-motion simulations. Real-time head tracking was then used to create ecological ('compensated') and non-ecological ('inversely compensated') head-and-display motion conditions. Ten (out of 20) participants reported feeling sick after being exposed …

Vection Is Enhanced By Increased Exposure To Optic Flow, Takeharu Seno, Kayoko Murata, Yoshitaka Fujii, Hidetoshi Kanaya, Masaki Ogawa, Kousuke Tokunaga, Stephen Palmisano

Faculty of Social Sciences - Papers (Archive)

2018, The Author(s) 2018. We examined whether vection strength could be modulated by altering the exposure duration to optic flow. Experiment 1 sourced 150 different video clips from various Japanese animation works which simulated self-motion. Despite large differences in the content of these video clips, we found a significant positive correlation between their play durations and their ratings of vection magnitude. Experiment 2 examined this relationship further using more tightly controlled visual motion stimuli. Vection was induced by presenting the motion of the same expanding grating stimulus for 8, 16, 32, or 64 seconds. While vection onset latencies remained constant …

Transformative Mobilities In The Pacific: Promoting Adaptation And Development In A Changing Climate, Carol Farbotko, Celia Mcmichael, Olivia V. Dun, Hedda Ransan-Cooper, Karen Elizabeth Mcnamara, Fanny Thornton

Faculty of Social Sciences - Papers (Archive)

Climate change is affecting Pacific life in significant and complex ways. Human mobility is shaped by climate change and is increasingly positioned by international agencies, policymakers, and governments as having an important role in both climate change adaptation and human development. We consider the potential for human mobility to promote adaptation and development among Pacific people in a changing climate. We argue that where Pacific people choose mobility, this should be supported and create opportunities that are responsive to the histories and existing patterns of mobility and place attachment among Pacific Islanders; commence from a position of climate and development …

Opercula, Michael J. Adams

Faculty of Social Sciences - Papers (Archive)

I was born in India, but two years later my family were in Australia, part of the flotsam and jetsam of Empire washed up in a country no-one knew anything about. For the last thirty years I have lived close to saltwater Country on the Illawarra coast of New South Wales, where I can daily and nightly walk the tideline. At my favourite and secret local beach I watch the energy dissipate from waves born in ocean storms hundreds of kilometres away, and those waves, like Empire, wash all kinds of things ashore.

The Problem Isn't Dockless Share Bikes. It's The Lack Of Bike Parking, Glen Fuller, Gordon R. Waitt, Ian M. Buchanan

Faculty of Social Sciences - Papers (Archive)

It's a local government truism that Australian city dwellers care about only three things - rates, rubbish and parking. They want lower rates, the freedom to turf out as much trash as they like, and convenient free car parking. The arrival of dockless share bikes set these attitudes towards parking and rubbish on a collision course.

Junk Food Marketing On Instagram: Content Analysis, Amy Vassallo, Bridget Kelly, Lelin Zhang, Zhiyong Wang, Sarah Young, Becky Freeman

Faculty of Social Sciences - Papers (Archive)

Background: Omnipresent marketing of processed foods is a key driver of dietary choices and brand loyalty. Market data indicate a shift in food marketing expenditures to digital media, including social media. These platforms have greater potential to influence young people, given their unique peer-to-peer transmission and youths' susceptibility to social pressures. Objective: The aim of this study was to investigate the frequency of images and videos posted by the most popular, energy-dense, nutrient-poor food and beverage brands on Instagram and the marketing strategies used in these images, including any healthy choice claims. Methods: A content analysis of 15 accounts was …

Should Women Aged 70-74 Be Invited To Participate In Screening Mammography? A Report On Two Australian Community Juries, Christopher J. Degeling, Alexandra Barratt, Sanchia Aranda, Robin J. Bell, Jenny Doust, Nehmat Houssami, Jolyn Hersch, Ruben Sakowsky, Vikki A. Entwistle, Stacy M. Carter

Faculty of Social Sciences - Papers (Archive)

Objective To elicit informed views from Australian women aged 70-74 regarding the acceptability of ceasing to invite women their age to participate in government-funded mammography screening (BreastScreen). Design Two community juries held in 2017. Setting Greater Sydney, a metropolis of 4.5 million people in New South Wales, Australia. Participants 34 women aged 70-74 with no personal history of breast cancer, recruited by random digit dialling and previously randomly recruited list-based samples. Main outcomes and measures Jury verdict and rationale in response to structured questions. We transcribed audio-recorded jury proceedings and identified central reasons for the jury's decision. Results The women's …

What's On Youtube? A Case Study On Food And Beverage Advertising In Videos Targeted At Children On Social Media, Leeann Tan, See Hoe Ng, Azahadi Omar, Tilakavati Karupaiah

Faculty of Social Sciences - Papers (Archive)

Background: Unhealthy food marketing to children is a key risk factor for childhood obesity. Online video platforms have surpassed television as the primary choice for screen viewing among children but the extent of food marketing through such media is relatively unknown. We aimed to examine food and beverage advertisements (ads) encountered in YouTube videos targeting children in Malaysia. Methods: The social media analytics site SocialBlade.com was used to identify the most popular YouTube videos (n = 250) targeting children. Ads encountered while viewing these videos were recorded and analyzed for type of product promoted and ad format (video vs. overlay). …

What Are 'Decodable Readers' And Do They Work?, Misty Adoniou, Brian L. Cambourne, Robyn Ewing

Faculty of Social Sciences - Papers (Archive)

The Victorian Coalition has promised $2.8 million for "decodable readers" for schools if they win the upcoming election. Money for books must surely be a good thing. But what exactly is a "decodable reader"? After all, surely all books are decodable. If they weren't decodable they would be unreadable.

Environmental Characteristics Of Early Childhood Education And Care, Daily Movement Behaviours And Adiposity In Toddlers: A Multilevel Mediation Analysis From The Get Up! Study, Zhiguang Zhang, Joao Rafael Rodrigues Pereira, Eduarda Manuela De Sousa Rodrigues De Sa, Anthony D. Okely, Xiaoqi Feng, Rute Santos

Faculty of Social Sciences - Papers (Archive)

Study objective: This study aimed to examine the direct effects of environmental characteristics of early childhood education and care (ECEC) centres on adiposity, and the indirect effects through daily movement behaviours (physical activity, sedentary time and naps). Methods: 274 children (average age 19.73 ± 4.15 months) from 27 ECEC centres participated in this study. Environmental characteristics of ECEC centres were rated using the Infant/Toddler Environment Rating Scale-revised edition (ITERS-R). Daily movement behaviours were assessed using 24-h accelerometry. Body mass index z-scores were used to indicate adiposity. Results: There were no significant direct effects or indirect effects of environmental characteristics on …

Digital Explanation As Assessment In University Science, Wendy S. Nielsen, Helen Georgiou, Pauline T. Jones, Annette Turney

Faculty of Social Sciences - Papers (Archive)

Assessments in tertiary science subjects typically assess content knowledge, and there is current need to both develop and assess different forms of knowledge and skills, such as communications and digital literacies. A digital explanation is a multimodal artefact created by students to explain science to a specified audience, which is an alternate form of assessment that has potential to develop and assess these other important forms of knowledge and skills. This research draws from perspectives in multimodality, educational semiotics and science education to gain a better understanding of digital explanation as a form of assessment in university science. Data sources …

Joining The Research Conversation: Threshold Concepts Embedded In The Literature Review, Meeta Chatterjee, Wendy S. Nielsen, Sarah Sanders

Faculty of Social Sciences - Papers (Archive)

Doctoral education scholars associate doctoral learning with certain threshold concepts, many of which are embedded in the literature review. In considering this, we draw from a literary metaphor of 'joining the conversation' and report on a doctoral writing programme that blended elements of workshops, 'shut-up-and-write' sessions and thesis writing circles in the Faculty of Social Sciences at an Australian university. Findings illustrate conceptual thresholds engendered in the literature review. Study participants reported growing awareness of: the need for a critical voice; the difference between descriptive and critical writing; and, different ways to conduct and structure the literature review. Further, these …

Cash Transfers For Hiv Prevention: What Do Young Women Spend It On? Mixed Methods Findings From Hptn 068, Catherine L. Mac Phail, Nomhle Khoza, Amanda Selin, Aimee Julien, Rhian Twine, Ryan Wagner, Xavier Gomez-Olive, Kathleen Kahn, Jing Wang, Audrey Pettifor

Faculty of Social Sciences - Papers (Archive)

Background: Social grants have been found to have an impact on health and wellbeing in multiple settings. Who receives the grant, however, has been the subject of discussion with regards to how the money is spent and who benefits from the grant. Methods: Using survey data from 1214 young women who were in the intervention arm and completed at least one annual visit in the HPTN 068 trial, and qualitative interview data from a subset of 38 participants, we examined spending of a cash transfer provided to young women conditioned on school attendance. Results: We found that spending was largely …

Resilience And Sustainability In The Management Of Landslides, Phillip N. Flentje, Robin N. Chowdhury

Faculty of Engineering and Information Sciences - Papers: Part A

There are many regions worldwide which are susceptible to landslides, which cause loss of life and adverse impacts to infrastructure, environment and communities. Landslides are often triggered by exceptional rainfall and large-magnitude earthquakes. A range of strategies and methods have been developed to mitigate the occurrence of landslides and to reduce their impact, including risk to human safety. The adopted approaches and systems must be sustainable and resilient in relation to the communities that are at risk. This paper refers to an Australian regional case study of urban landslide management in the Wollongong region, New South Wales. The research carried …

Driving Increased Utilisation Of Cool Roofs On Large-Footprint Buildings - Final Report, Alan Green, Laia Ledo Gomis, Afroditi Synnefa, Shamila Haddad, R Paolini, Paul Cooper, Jamie Adams, Mark A. Eckermann, Greg Johnson, Georgios Kokogiannakis, Zhenjun Ma, Buyung Kosasih, Mattheos Santamouris

Faculty of Engineering and Information Sciences - Papers: Part B

This is the final report for the Driving Increased Utilisation of Cool Roofs on Large Footprint Buildings project, providing case studies about how cool roof technology reduces the amount of heat transmitted into buildings on hot days, and in turn the amount of air-conditioning required for cooling.

Device-To-Device Communication In 5g: Towards Efficient Scheduling, Jana Fayek, Mohamad Aoude, Mohamad Raad, Raad Raad

Faculty of Engineering and Information Sciences - Papers: Part B

5G wireless networks are expected to carry large traffic volumes due to the growth of mobile devices and the increasing demand for high data rates from applications. Device to device communication is one of the suggested technologies to support this increasing load and enhance the capacity of networks. However, the implementation of D2D communication reveals many barriers that include communication scheduling, for which the architecture remains complex and obscure. In this paper, an overview of the available literature on the implementation of networks supporting D2D communication is presented, emphasizing the complexity of the offered solutions. This paper also offers a …

Energy-Aware Routing For Cubesat Swarms, Mohamed Atef Madni, Raad Raad, Mohamad Raad

Faculty of Engineering and Information Sciences - Papers: Part B

CubeSats operating in a swarm are characterized by a mix of scheduled intermittent connectivity, high delays, and high failure rates. Each CubeSat is limited in size, usually has low data rates and has a low mass. Consequently, they have limited space for solar panels, and thus limit their available energy. Profitably, CubeSats can function in swarms using inter-CubeSat links as well as ground links. Accordingly, any routing protocols developed for CubeSats must be energy aware. We propose two novel Shortest and Energy Reliable Path (SERP) routing protocols; namely, SERP- Breadth-First Search (SERP-BFS) and SERP-Dijkstra. Both algorithms aim to minimize the …

Fast Multi-Resource Allocation With Patterns In Large Scale Cloud Data Center, Jiyuan Shi, Junzhou Luo, Fang Dong, Jiahui Jin, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part B

How to achieve fast and efficient resource allocation is an important optimization problem of resource management in cloud data center. On one hand, in order to ensure the user experience of resource requesting, the system has to achieve fast resource allocation to timely process resource requests; on the other hand, in order to ensure the efficiency of resource allocation, how to allocate multi-dimensional resource requests to servers needs to be optimized, such that server's resource utilization can be improved. However, most of existing approaches focus on finding out the mapping of each specific resource request to each specific server. This …

Concrete Filled Carbon Frp Tube (Cfrp-Cfft) Columns With And Without Cfrp Reinforcing Bars: Axial-Flexural Interactions, Qasim S. Khan, M Neaz Sheikh, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

The axial and flexural behaviors of Concrete Filled Carbon Fiber Reinforced Polymer Tube (CFRP-CFFT) columns have received significant research attention in the last two decades. One of the most attractive advantages of Carbon FRP (CFRP) tube is the high confinement which results in substantial increase in peak axial and flexural loads and deformations. Despite large research efforts, the behavior of CFRP-CFFT with and without CFRP reinforcing bars under different applied axial load eccentricity has not yet been adequately investigated. This study investigates the experimental and analytical axial-flexural (P−M) interactions of CFRP-CFFT columns with and without CFRP reinforcing bars. A total …

Load Forecasting Under Changing Climatic Conditions For The City Of Sydney, Australia, Tanvir Ahmed, Dao Hoang Vu, Kashem M. Muttaqi, Ashish P. Agalgaonkar

Faculty of Engineering and Information Sciences - Papers: Part B

In the current context, climate change has become an unequivocal phenomenon. Although it primarily encompasses change in temperature, nevertheless other weather variables such as rainfall, wind speed, evaporation and humidity can also be affected as a result of climate change. Addressing the impacts of climate change on electricity demand is essential for predicting the future demand. For example, cooling and heating requirements change significantly with respect to climate change that may result to the change in electricity load demand. In this paper, a backward elimination based multiple regression approach is proposed for analyzing the influence of climatic variables on load …

Analysis Of Sintering And Bonding Of Ultrafine Wc Powder And Stainless Steel By Hot Compaction Diffusion Bonding, Mahadi Hasan, Jingwei Zhao, Zhenyi Huang, Li Chang, Haoruo Zhou, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part B

Bonding between tungsten carbide and steel is a challenging task due to their large difference of physical properties. Previous reports were based on solid state bonding. In this study, a powder-solid mechanism was employed for analysing the sintering and bonding process of ultrafine WC (with 8% Co added as binder) powder and solid stainless steel (SS 304). A novel manufacturing mechanism of hot compaction diffusion bonding (HCDB) was implemented to facilitate the bonding process. The influence of temperature varying from 1160 to 1220 °C was investigated with an interval of 20 °C. The experiment is conducted in a vacuum environment …

Fast Quasi-Newton Algorithms For Penalized Reconstruction In Emission Tomography And Further Improvements Via Preconditioning, Yu-Jung Tsai, Alexandre B. Bousse, Matthias J. Ehrhardt, Charles Stearns, Sangtae Ahn, Brian F. Hutton, Simon R. Arridge, Kris Thielemans

Faculty of Engineering and Information Sciences - Papers: Part B

This paper reports on the feasibility of using a quasi-Newton optimization algorithm, limited-memory Broyden- Fletcher-Goldfarb-Shanno with boundary constraints (L-BFGSB), for penalized image reconstruction problems in emission tomography (ET). For further acceleration, an additional preconditioning technique based on a diagonal approximation of the Hessian was introduced. The convergence rate of L-BFGSB and the proposed preconditioned algorithm (L-BFGS-B-PC) was evaluated with simulated data with various factors, such as the noise level, penalty type, penalty strength and background level. Data of three 18F-FDG patient acquisitions were also reconstructed. Results showed that the proposed L-BFGS-B-PC outperforms L-BFGS-B in convergence rate for all simulated conditions …

A Silicon Strip Detector Array For Energy Verification And Quality Assurance In Heavy Ion Therapy, Emily Debrot, Matthew Newall, Susanna Guatelli, Marco Petasecca, Naruhiro Matsufuji, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

Purpose

The measurement of depth dose profiles for range and energy verification of heavy ion beams is an important aspect of quality assurance procedures for heavy ion therapy facilities. The steep dose gradients in the Bragg peak region of these profiles require the use of detectors with high spatial resolution. The aim of this work is to characterize a one dimensional monolithic silicon detector array called the “serial Dose Magnifying Glass” (sDMG) as an independent ion beam energy and range verification system used for quality assurance conducted for ion beams used in heavy ion therapy.

Methods

The sDMG detector consists …

Study Of Reaction Sequences During Msr Synthesis Of Tic By Controlled Ball Milling Of Titanium And Graphite, Erhuvwu J. Oghenevweta, David Wexler, Andrzej Calka

Faculty of Engineering and Information Sciences - Papers: Part B

During reactive ball milling of Ti and C, mechanically induced self-propagating reaction (MSR) synthesis of TiC is reported to occur via a process including initial formation of small amounts of TiC prior to exothermic ignition, followed by MSR and the formation of stiochiometric TiC (Dorofeev et al., 2011; Oghenevweta et al., 2016 [1, 2]). However, both the chemical evolution and mechanisms of reaction and growth of TiC both prior to, during and after ignition are not fully understood. This research focuses on fundamental understanding of the reaction sequences during MSR synthesis of TiC from elemental Ti and C (graphite).

Magnetically …

Influence Of Particle Gradation And Shape On The Performance Of Stone Columns In Soft Clay, Firman Siahaan, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn, Ana Heitor

Faculty of Engineering and Information Sciences - Papers: Part B

A stone column typically consists of particles whose influence has largely been overlooked in design practice in terms of stress transfer, pattern of deformation, and intrusion of fines (clogging). This article presents an experimental study on the load-deformation behavior of a model stone column installed in soft clay with a particular emphasis on the influence of particle gradation and shape under undrained loading. The results show that particle gradation and shape have a significant influence on the load-deformation behavior and the extent of fines intrusion into the stone columns. Relatively well-graded particle sizes favor the development of higher peak shear …

Martens-Ite, Druce Patrick Dunne

Faculty of Engineering and Information Sciences - Papers: Part B

Martensite and martensitic transformations in metals and alloys have been intensively studied for more than a century and many comprehensive and informative reviews have been published. The current review differs insofar as the analysis is performed largely through the prism of detailed studies of the changes in the martensitic transformation in Fe3Pt alloy as a result of austenite ordering. This important alloy is the first ferrous alloy identified as exhibiting thermoelastic transformation and shape memory. The effect of parent phase order on the martensitic transformation offers significant insights into general understanding of the nature of martensitic transformation, particularly the factors …

Investigations Of Ventilation Airflow Characteristics On A Longwall Face-A Computational Approach, Zhongwei Wang, Ting X. Ren, Liqiang Ma, Jian Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

Mine ventilation has always been critical for underground mining operations to ensure operational efficiency and compliance with safety and health statutory requirements. To obtain a thorough understanding of the ventilation flow characteristics on a longwall face, innovative three dimensional (3D) models, incorporating key features of the longwall equipment and a zone of immediate goaf area, were developed. Mesh independent studies were conducted to determine the desirable mesh required for a mesh-independent solution. Then the model results were validated using field ventilation survey data. At both intersections of maingate/tailgate (MG/TG) and face where the flow boundary changes sharply, the occurrence of …

A Case Study Of Presplitting Blasting Parameters Of Hard And Massive Roof Based On The Interaction Between Support And Overlying Strata, Ningbo Zhang, Changyou Liu, Baobao Chen

Faculty of Engineering and Information Sciences - Papers: Part B

Due to the existence of a hard and massive roof (HMR), severe ground pressure behaviors have been observed at the working face, resulting in safety issues and the degradation of production effectiveness. Based on the HMR conditions of the Datong Mining Area, the fracture-related instability of the HMR and its effects on the support selection were investigated by analyzing the interaction between support and overlying strata. Advancefixed-distance presplitting blasting (AFPB) technology was proposed to control the caving interval of HMR, and the influence of the controlled interval on the working load of supports was also analyzed. The working load of …