Social and Behavioral Sciences Commons^™

Behaviour Of New Zealand Ironsand During Iron Ore Sintering, Zhe Wang, Harold Rogers, David Pinson, Brian J. Monaghan, Sheng Chew, Paul Zulli, Sharon Nightingale, Guangqing Zhang

Brian Monaghan

Titanium-bearing burdens are commonly introduced into blast furnaces to protect the hearlh because the so-called "titanium bear" which is a precipitate of carbide, nitride and carbonitride of titanium may form in the blast furnace hearth if Ti02 is present in the feed [1 , 2J. New Zealand ironsand is a titanomagnetite, containing around 60 wt.% iron, 8 wt.% titanium and other substances such as silica, phosphorus and lime [3, 4]. Since it is competitive in price, introduction of the ironsand into the ferrous feed can reduce the production cost and potentially increase blast furnace campaign life. An appropriate method of …

Modeling Of Thin Strip Profile During Cold Rolling On Roll Crossing And Shifting Mill, A Aljabri, Z Y. Jiang, D B. Wei, X D. Wang, H Tibar

Abdulrahman Daifullah Aljabri

Strip profile control in cold rolling of thin strip is a difficult and challenge problem found in industry. Currently using the novel type of strip rolling mill, such as the work roll crossing and shifting is the one of the main methods to control the strip profile quality in cold rolling. In this paper, 3-D finite element simulation models of the thin strip profile in cold rolling for the work roll crossing and shifting system were successfully developed. The strip profile and edge drop are discussed considering both crossing angle and shifting value of the work rolls. The research shows …

Analysis Of Thin Strip Profile During Asymmetrical Cold Rolling With Roll Crossing And Shifting Mill, Abdulrahman Aljabri, Zhengyi Jiang, Dongbin Wei

Abdulrahman Daifullah Aljabri

Strip profile control during rolling is required to assure the dimensional quality of rolled thin strip is acceptable for customers. Throughout rolling, the strip profile is controlled by using the advanced shape control rolling mill, such as the combination of work roll crossing and shifting during asymmetrical rolling, the one of the valuable methods to control the strip profile quality in rolling process. In this paper, the influences of cold rolling parameters such as the crossing angle and axial shifting value of work rolls on the strip profile are analysed. The strip shape control is discussed under both symmetrical and …

Muscles Within Muscles: Coordination Of 19 Muscle Segments Within Three Shoulder Muscles During Isometric Motor Tasks, Darryl Mcandrew, Xu-Feng Huang, James Wickham, Mark Brown

Darryl J McAndrew

No abstract provided.

Whole Body Vibration Exposure Experienced By Bauxite Mining Operators: An Evaluation Of Heavy Haulage Equipment During Varying Seasonal Conditions (Wet & Dry Seasons) And The Potential Exposure Risk, Marcus Brooks, Marion A. Burgess, Jane L. Whitelaw

Faculty of Social Sciences - Papers (Archive)

Abstract presented at the 32nd Annual Conference & Exhibition of the Australian Institute of Occupational Hygienists Inc, 29 November - 3 December 2014, Melbourne, Australia.

Effect Of Concentric And Eccentric Velocity During Heavy-Load Non-Ballistic Elbow Flexion Resistance Exercise, John Sampson, Allison Donohoe, Herbert Groeller

Faculty of Social Sciences - Papers (Archive)

Objectives: The current study provided a longitudinal evaluation of the anthropometric and fitness characteristics in junior rugby league players across three annual-age categories (i.e., under 13s, 14s and 15s) considering playing position and selection level.

Design: Longitudinal design.

Methods: Eighty-one junior rugby league players selected to a talent development programme were tracked over a two year period. Anthropometric (height, sitting height, body mass and sum of four skinfolds) and fitness (lower and upper body power, speed, change of direction speed and maximal aerobic power) characteristics were measured on three occasions (i.e., under 13s, 14s and 15s). Repeated measures multivariate analysis …

Midwives And Nutrition Education During Pregnancy: A Literature Review, Jamila Arrish, Heather Yeatman, Moira Williamson

Faculty of Social Sciences - Papers (Archive)

Objectives This review explored the extent to which the role of midwives in nutrition education during pregnancy has been reported in the literature and areas requiring further research were identified. Review method A review of the literature was undertaken. Articles included in the review were published in English, in scholarly journals, and provided information about the knowledge, education, and attitudes of midwives towards nutrition during pregnancy. Results and discussion Few studies were identified. The included studies were exploratory and descriptive. Studies had reported that midwives lacked a basic knowledge of nutrition requirements during pregnancy. This might be attributed to inadequate …

An Fmri Study Exploring Cognitive Processing During Computer - Based Discovery Learning, Barney Dalgarno, Gregor Kennedy, Sue Bennett

Faculty of Social Sciences - Papers (Archive)

Discovery-based learning designs incorporating active exploration are common within computer-based instructional simulations, supported by constructivist theories of learning focussing on active individual knowledge construction. On the other hand, researchers have highlighted empirical evidence showing that ‘pure’ discovery learning is of limited value and that combinations of explicit instruction and guided discovery learning are more effective. Little is known, however, about differences in the cognitive processing that occurs when a learner undertakes active discovery learning using a computer-based simulation compared to when they are guided through observation of simulation output. A better understanding of the cognitive processing occurring when learners interact …

Being A Girl In A Boys' World: Investigating The Experiences Of Girls With Autism Spectrum Disorders During Adolescence, Elizabeth Kate Cridland, Sandra C. Jones, Peter Caputi, Christopher Magee

Faculty of Social Sciences - Papers (Archive)

This study investigates the experiences of adolescent girls with autism spectrum disorders (ASD) during adolescence. Semi-structured interviews were conducted with three mother–daughter dyads and two additional mothers. A range of issues were highlighted covering physical, emotional, social and sexual domains. Some of these issues were similar to those experienced by boys with ASD during adolescence, such as negative implications of late diagnosis, challenges of transitioning to and coping with high school, ‘hands-on’ role of parents into adolescence, difficulties adjusting to the increased demands of adolescent hygiene routines, and the importance of learning personal boundaries in interactions with others. Other issues …

Socio-Ecological Predictors Of Participation And Dropout In Organised Sports During Childhood, Stewart Vella, Dylan Cliff, Anthony D. Okely

Faculty of Social Sciences - Papers (Archive)

Background: The purpose of this study was to explore the socio-ecological determinants of participation and dropout in organised sports in a nationally-representative sample of Australian children.Methods: Data were drawn from Waves 3 and 4 of the Longitudinal Study of Australian Children. In total, 4042 children aged 8.25 (SD = 0.44) years at baseline were included, with 24-months between Waves. Socio-ecological predictors were reported by parents and teachers, while cognitive and health measures were assessed by trained professionals. All predictors were assessed at age 8, and used to predict participation and dropout by age 10.Results: Seven variables at age …

Eeg Effects On Electrophysiological And Behavioural Responses During A Cued Cpt, Diana Karamacoska, Robert Barry, Frances M. De Blasio

Faculty of Social Sciences - Papers (Archive)

Abstract presented at The 17th World Congress of Psychophysiology (IOP2014) of the International Organization of Psychophysiology (IOP) Hiroshima, Japan, September 23rd to 27th, 2014

Analysis Of Thin Strip Profile During Asymmetrical Cold Rolling With Roll Crossing And Shifting Mill, Abdulrahman Aljabri, Zhengyi Jiang, Dongbin Wei

Faculty of Engineering and Information Sciences - Papers: Part A

Strip profile control during rolling is required to assure the dimensional quality of rolled thin strip is acceptable for customers. Throughout rolling, the strip profile is controlled by using the advanced shape control rolling mill, such as the combination of work roll crossing and shifting during asymmetrical rolling, the one of the valuable methods to control the strip profile quality in rolling process. In this paper, the influences of cold rolling parameters such as the crossing angle and axial shifting value of work rolls on the strip profile are analysed. The strip shape control is discussed under both symmetrical and …

A Study Of Plastic Deformation Behavior During High Pressure Torsion Process By Crystal Plasticity Finite Element Simulation, Peitang Wei, Cheng Lu, A K. Tieu, Guanyu Deng

Faculty of Engineering and Information Sciences - Papers: Part A

High pressure torsion (HPT) is an efficient technique of producing ultrafine grained materials with exceptional small grain size. In this study, a crystal plasticity finite element method (CPFEM) model has been developed to investigate the plastic deformation behavior of pure aluminum single crystal during the HPT process. The simulation results show that, the distribution and evolution of the macroscopic plastic strain and the accumulative shear strain are similar. The value increases with the increase of the distance from the center as well as the number of revolution. The simulation is capable of reflecting the anisotropic characteristics of HPT deformation, a …

Characterization Of Moskin Detector For In Vivo Skin Dose Measurement During Megavoltage Radiotherapy, Weiloong Jong, Jeannie Hsiu Ding Wong, Ngiemin Ung, Kwanhoong Ng, Gwofuang Ho, Dean Cutajar, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part A

In vivo dosimetry is important during radiotherapy to ensure the accuracy of the dose delivered to the treatment volume. A dosimeter should be characterized based on its application before it is used for in vivo dosimetry. In this study, we characterize a new MOSFET-based detector, the MOSkin detector, on surface for in vivo skin dosimetry. The advantages of the MOSkin detector are its water equivalent depth of measurement of 0.07 mm, small physical size with submicron dosimetric volume, and the ability to provide real-time readout. A MOSkin detector was calibrated and the reproducibility, linearity, and response over a large dose …

Effects Of Hydrogen On The Critical Conditions For Dynamic Recrystallization Of Titanium Alloy During Hot Deformation, Jingwei Zhao, Hua Ding, Zhengyi Jiang, Dongbin Wei, Kezhi Linghu

Faculty of Engineering and Information Sciences - Papers: Part A

Hot deformation tests were performed to study the flow behavior and microstructural evolution of a Ti600 titanium alloy with different hydrogen contents. The effects of hydrogen on the critical conditions for the initiation of dynamic recrystallization (DRX) were investigated. The DRX kinetics models of hydrogenated Ti600 alloy were developed, and the DRX volume fractions were quantified under different deformation conditions. The results indicate that the addition of proper hydrogen (no greater than 0.3 pct) benefits the decrease of both the critical stress and critical strain for the initiation of DRX. The critical stress and critical strain are dependent linearly on …

Rejection And Fate Of Trace Organic Compounds (Trocs) During Membrane Distillation, Kaushalya Wijekoon, Faisal Ibney Hai, Jinguo Kang, William E. Price, Tzahi Cath, Long D. Nghiem

Faculty of Engineering and Information Sciences - Papers: Part A

In this study, we examined the feasibility of membrane distillation (MD) for removing trace organic compounds (TrOCs) during water and wastewater treatment. A set of 29 compounds was selected to represent major TrOC groups, including pharmaceuticals, steroid hormones, phytoestrogens, UV-filters, industrial chemicals, and pesticides that occur ubiquitously in municipal wastewater. Results reported here suggest that rejection and fate and transport of TrOC during MD are governed by their volatility and, to a lesser extent, hydrophobicity. All TrOCs with pKH > 9 (which can be classified as non-volatile) were well removed by MD. Among the 29 TrOCs investigated in this study, three …

Abnormal Ductility Increase Of Commercial Purity Al During Accumulative Roll Bonding, Kuiyu Cheng, Cheng Lu, Kiet Tieu

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, sheets of commercial purity Al were fabricated by the accumulative roll-bonding (ARB) method up to six cycles. To increase the shear deformation, no lubricant was used during the ARB processing and the samples were carried out for ARB processing without any preheat treatment. One interesting finding is that the ductility and strength both increased during the first several cycles of ARB processing. It is proposed that the initial rolling texture might play an important part in the subsequent ARB processing since the original Al sheets for ARB processing have not been subjected to any annealing. The microstructures …

Effects Of Mixing And Covering With Mature Compost On Gaseous Emissions During Composting, Wen Hai Luo, Jing Yuan, Yi Ming Luo, Guo Xue Li, Long D. Nghiem, William E. Price

Faculty of Engineering and Information Sciences - Papers: Part A

This study investigated effects of mature compost on gaseous emissions during composting using pig manure amended with corn stalks. Apart from a control treatment, three treatments were conducted with the addition of 5% (wet weight of raw materials) of mature compost: (a) mixing raw materials with mature compost at the beginning of composting; (b) covering raw materials with mature compost throughout the experimental period; and (c) covering raw materials with mature compost at the start of composting, but incorporating it into composting pile on day 6 of composting. Mature compost used for the last treatment was inoculated with 2% (wet …

A Deformation Mechanism Of Hard Metal Surrounded By Soft Metal During Roll Forming, Hailiang Yu, A Kiet Tieu, Cheng Lu, Xiong Liu, Ajit Godbole, Huijun Li, Charlie Kong, Q Qin

Faculty of Engineering and Information Sciences - Papers: Part A

It is interesting to imagine what would happen when a mixture of soft-boiled eggs and stones is deformed together. A foil made of pure Ti is stronger than that made of Cu. When a composite Cu/Ti foil deforms, the harder Ti will penetrate into the softer Cu in the convex shapes according to previously reported results. In this paper, we describe the fabrication of multilayer Cu/Ti foils by the roll bonding technique and report our observations. The experimental results lead us to propose a new deformation mechanism for a hard metal surrounded by a soft metal during rolling of a …

Sludge Cycling Between Aerobic, Anoxic And Anaerobic Regimes To Reduce Sludge Production During Wastewater Treatment: Performance, Mechanisms, And Implications, Galilee Semblante, Faisal Ibney Hai, Huu H. Ngo, Wenshan Guo, Sheng-Jie You, William Price, Long Nghiem

Faculty of Engineering and Information Sciences - Papers: Part A

Alternate cycling of sludge in aerobic, anoxic, and anaerobic regimes is a promising strategy that can reduce the sludge yield of conventional activated sludge (CAS) by up to 50% with potentially lower capital and operating cost than physical- and/or chemical-based sludge minimisation techniques. The mechanisms responsible for reducing sludge yield include alterations to cellular metabolism and feeding behaviour (metabolic uncoupling, feasting/fasting, and endogenous decay), biological floc destruction, and predation on bacteria by higher organisms. Though discrepancies across various studies are recognisable, it is apparent that sludge retention time, oxygen-reduction potential of the anaerobic tank, temperature, sludge return ratio and loading …

3d Fem Analysis Of Strip Shape During Multi-Pass Rolling In A 6-High Cvc Cold Rolling Mill, Kezhi Linghu, Zhengyi Jiang, Jingwei Zhao, Fei Li, Dongbin Wei, Jianzhong Xu, Xiaoming Zhang, Xianming Zhao

Faculty of Engineering and Information Sciences - Papers: Part A

A 3D elastic–plastic finite element method (FEM) model of cold strip rolling for 6-high continuous variable crown (CVC) control rolling mill was developed. This model considers the boundary conditions such as accurate CVC curves, total rolling forces, total bending forces and roll shifting values. The rolling force distributions were obtained by the internal iteration processes instead of being treated as model boundary conditions. The calculated error has been significantly reduced by the developed model. Based on the rolling schedule data from a 1,850-mm CVC cold rolling mill, the absolute error between the simulated results and the actual values is obtained …

Nutrition During Pregnancy - Exploring Women's Knowledge And Models Of Nutrition Communication, Khlood Bookari, Heather Yeatman, Moira Williamson

Faculty of Social Sciences - Papers (Archive)

Abstract of paper presented at the ICM 30th Triennial Congress - Midwives: Improving Women's Health Globally, 1-5 June 2014, Prague, Czech Republic

Illusory Scene Shearing During Real And Illusory Self-Rotations In Roll, Stephen Palmisano, Robert Allison, Ian Howard

Faculty of Social Sciences - Papers (Archive)

Abstract presented at The Asia-Pacific Conference on Vision (APCV) 2014 19-22 July 2014, Takamatsu, Japan

A Review On The Occurrence Of Micropollutants In The Aquatic Environment And Their Fate And Removal During Wastewater Treatment, Yunlong Luo, Wenshan Guo, Huu Hao Ngo, Long Duc Nghiem, Faisal Ibney Hai, Jian Zhang, Shuang Liang, Xiaochang C. Wang

Faculty of Engineering and Information Sciences - Papers: Part A

Micropollutants are emerging as a new challenge to the scientific community. This review provides a summary of the recent occurrence of micropollutants in the aquatic environment including sewage, surface water, groundwater and drinking water. The discharge of treated effluent from WWTPs is a major pathway for the introduction of micropollutants to surface water. WWTPs act as primary barriers against the spread of micropollutants. WWTP removal efficiency of the selected micropollutants in 14 countries/regions depicts compound-specific variation in removal, ranging from 12.5 to 100%. Advanced treatment processes, such as activated carbon adsorption, advanced oxidation processes, nanofiltration, reverse osmosis, and membrane bioreactors …

Relative Validity Of 3 Accelerometer Models For Estimating Energy Expenditure During Light Activity, Alexander Allan Wetten, Marijka Batterham, Sze Yen Tan, Linda Tapsell

Faculty of Social Sciences - Papers (Archive)

Background: With physical inactivity inextricably linked to the increasing prevalence of obesity, there is a need for validated methods that measure free-living energy expenditure (EE) within sedentary environments. While accelerometers enable these measurements, few studies have compared device accuracy in such settings. The aim of this study was to investigate the relative validity of the Actigraph, RT3 and SenseWear Armband (SWA). Methods: Twenty-three (11 male, 12 female) participants (age: 25.3 ± 6.3 yr; BMI: 22.6 ± 2.7) wore 3 accelerometers at designated sites during a 4-hour stay in the Whole Room Calorimeter (WRC). Participants performed 2 10-minute bouts of light-intensity …