Engineering Commons^™

Definition Of Oral Presentation, Walter Antonia.Cummins22@Gmail.Com

walter-smith

Assessing An Assessment: The New Nsse Il Module, Debbie Morrow

Debbie Morrow

Assessing Situation Awareness In Unmanned Aircraft Systems Operations, Haydee M. Cuevas, Marisa Aguiar

Haydee M. Cuevas

The objective of this study was to investigate the potential utility of the Situation Awareness Linked Indicators Adapted to Novel Tasks (SALIANT) methodology as an assessment tool in unmanned aircraft systems (UAS) operations. Eighteen participants completed a UAS scenario (port security) as part of nine two-person crews (pilot and sensor operator). Subject matter experts mapped the naturally occurring team behaviors in the UAS scenario to create a SALIANT checklist, which was then used to rate participants’ SA. Results showed the SALIANT methodology was able to discriminate differences in SA behaviors among the UAS crews. Results also revealed significant correlations between …

Initial Results From The First National Survey Of Student Outcomes From Small Satellite Program Participation, Jeremy Straub

Jeremy Straub

This paper presents initial results of the first national / international survey of student participants in CubeSat and other small spacecraft programs. It aims to make portions of the results of the survey available for immediate use by the CubeSat / small spacecraft community prior to the completion of a thorough analysis of the results and consideration of correlating and prospective causation factors for various outcomes.

Engineering Assessment Development Report: Ahelo Feasibility Study, Jacob Pearce, Julian Fraillon, Hamish Coates, Sarah Richardson

Julian Fraillon

No abstract provided.

Assessment Of The Impact Of Clothing And Environmental Conditions On Visible Light 3d Scanning, Pann Ajjimaporn, Jeremy Straub, Scott Kerlin

Jeremy Straub

The quality of models produced by visible light 3D scanners is influenced by multiple factors. To max-imize model accuracy and detail levels, the correct combination of lighting texture, subject posture and software usage must be selected. The work described herein has been performed to measure the effect of different lighting and envi-ronmental conditions on human 3D scanning results.

Power Quality Emission Assessment Of Photovoltaic Inverters Based On Iec Technical Report 61000-3-15:2011, Devinda Perera, Philip Ciufo, Lasantha G. Meegahapola, Sarath Perera

Dr Philip Ciufo

The International Electrotechnical Committee Technical Report IEC 61000-3-15:2011 provides electromagnetic compatibility requirements and test conditions for distributed generators up to 75 A per phase. In the current research, two commercially available photovoltaic (PV) inverters up to the capacity of 3600 W were tested following the guidelines proposed in IEC 61000-3-15 in relation to low order harmonic emission and flicker emission. In addition, the harmonic and flicker emission behaviour of the PV inverters were investigated under varying irradiation conditions. Both PV inverters were observed to comply with the emission requirements prescribed by the technical report under most conditions except for even …

Voltage Unbalance Emission Assessment: Sources Of Contribution And Their Ranking, U Jayatunga, Sarath Perera, P Ciufo, A P. Agalgaonkar

Dr Philip Ciufo

etermining sources of voltage unbalance (VU) and quantifying their individual contributions in an interconnected network is a complex task due to multiple interactions that take place between them. Post-connection VU emission assessment techniques in relation to customer installations are important not only in compliance assessment according to IEC/TR 61000-3- 13:2008 Limits - Assessment of emission limits for the connection of unbalanced installations to MV, HV and EHV power systems, but also in determining the various emission contributors in the power system being considered. This paper presents a case study on the application of a recently developed post-connection VU emission assessment …

Interfacial Assessment Of Cao-Al2o3-Sio2-Mgo Slags On Mgal2o4 Spinel, Hamed Abdeyazdan, Neslihan Dogan, M Akbar Rhamdhani, Michael Chapman, Brian J. Monaghan

Brian Monaghan

Steel cleanness is an important and growing research area driven by the demands to produce high quality steel. Lowering the inclusion content in steel is an important criterion for clean steel. It is therefore important to better understand the interaction between inclusions and slag to improve the removability of inclusions from liquid steel. For efficient inclusion removal the inclusions must attach/bond with the slag phase. The strength of the attachment can be characterised by the wettability of the slag on the inclusions. In this study, the dynamic wetting of ladle slags of the CaO-Al2O3-SiO2- MgO system on a solid spinel …

Assessment Of Ballast Fouling And Its Implications On Track Drainage, Nayoma Tennakoon, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Sanjay Nimbalkar

Cholachat Rujikiatkamjorn

Australian railways offer an efficient and economic mode for transporting freight and passengers across all States. Conventionally, rail tracks are positioned on ballast for reasons including economy (availability and abundance), rapid drainage, and high load bearing capacity. However, the ballast becomes fouled due to the intrusion of fines either from the subgrade or surface which impairs track drainage. In order to maintain serviceability, it is necessary to maintain adequate drainage capacity in the track. To identify the risk associated with fouling, it is important to understand the effects of the amount of fouling on drainage conditions. In this present study …

Assessment Of Ballast Fouling And Its Implications On Track Drainage, Nayoma Tennakoon, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Sanjay Nimbalkar

Buddhima Indraratna

Australian railways offer an efficient and economic mode for transporting freight and passengers across all States. Conventionally, rail tracks are positioned on ballast for reasons including economy (availability and abundance), rapid drainage, and high load bearing capacity. However, the ballast becomes fouled due to the intrusion of fines either from the subgrade or surface which impairs track drainage. In order to maintain serviceability, it is necessary to maintain adequate drainage capacity in the track. To identify the risk associated with fouling, it is important to understand the effects of the amount of fouling on drainage conditions. In this present study …

Educational Outcomes From The Openorbiter Small Spacecraft Development Program, Jeremy Straub

Jeremy Straub

The OpenOrbiter program [1] is developing a low-cost framework for the creation of space-craft by researchers and educators worldwide [8]. In addition to the technical objectives, ed-ucational assessment [2, 3] has also been a key focus. Students working on development of the spacecraft [4] were asked what types of benefits they sought from their participation [5]. The assessment of the attainment of these benefits is ongoing, in conjunction with continued development in pursuit of the crea-tion of a set of designs that can be used to build a spacecraft with a cost of under $5,000 [13] .

Thermodynamic Assessment Of Aluminium Production Through Carbosulphidation Route, Nazmul Huda, Muhammad A. Rhamdhani, M A. Dewan, Geoffrey A. Brooks, B J. Monaghan, L Prentice

Brian Monaghan

Indirect carbothermal reduction of alumina for the production of aluminium has been claimed to be better compared to the existing Hall-Heroult process in-terms of energy usage, generation of perfluorocarbons and overall greenhouse gas emission. In the process, alumina is reduced to an intermediate compound which is then further reduced to Al. It has been shown from the previous thermodynamic study by the authors that high conversion of alumina can be obtained if it is reduced to Al-chloride, Al-nitride or Al-sulphide. This paper deals with detailed systematic thermodynamic analysis of the process through carbosulphidation route, where alumina is first reduced to …

Comparison Of Methodologies For Assessment Of Harmonic Current Emission Limits For Large Installations Connected To Lv Networks, Biyanvilage Perera, Sarath Perera, Philip Ciufo, Victor J. Gosbell

Dr Philip Ciufo

With the proliferation of large, disturbing installations (loads and distribution generators) connected to public low voltage networks, managing the harmonic voltage levels in the network has become a key concern to distribution network service providers (DNSPs). Therefore, it is important that DNSPs limit the harmonic current emission by individual installations. This paper reviews a number of methodologies that exist in the current technical literature in relation to the assessment of harmonic current emission limits for disturbing installations connected to the public LV network. Application of these methodologies is demonstrated through a case study on a test network. The study shows …

Calibrating Engineering Graduate Capabilities Against Assessment Tasks: A Preliminary Study, Long Nghiem, Maureen Bell

Long D Nghiem

This paper investigated the connection between assessment tasks and graduate capabilities. Surveys conducted as part of this study revealed differences in planning for the development of, and student achievement of, graduate capabilities and that assessment tasks were valuable tools to guide and facilitate the development of intended graduate capabilities. Drawing from the obtained data, a prototype framework for curriculum design was proposed, allowing for better alignment of assessment tasks and graduate capability development in systematic subject design.

Proposal Of A Methodology For Bridge Condition Assessment, Maria Rashidi, Peter Gibson

Peter R Gibson

Due to the substantial role of bridges in transportation networks and in accordance with the limited funding for bridge management, remediation strategies have to be prioritised. A conservative bridge assessment will result in unnecessary actions, such as costly bridge strengthening or repairs. On the other hand, any bridge maintenance negligence and delayed actions may lead to heavy future costs or degraded assets. The accuracy of decisions developed by any manager or bridge engineer relies on the accuracy of the bridge condition assessment which emanates from visual inspection. Many bridge rating systems are based on a very subjective procedure and are …

Participatory Assessment Of Water Developments In An Atoll Town, Magnus Moglia, Pascal Perez

Professor Pascal Perez

Water development projects often fail, which represents a poor outcome given the limited progress against the Millennium Development Goals in providing people with adequate water and sanitation services. This may not be surprising given that water management has been identified as being in the complex system domain. According to the Cynefin framework, many traditional approaches are not suitable; but it suggests an approach based on the methods of probe, sense and respond. In line with this general framework, a participatory assessment methodology has been used to explore experiences in the atoll town of Tarawa in the Republic of Kiribati. After …

Non-Destructive Assessment Of Rail Track Condition Using Ground Penetrating Radar, L J. Su, Buddhima Indraratna, C Rujikiatkamjorn

Cholachat Rujikiatkamjorn

Ground penetrating radar (GPR) can be used to locate interfaces and underground utilities, and evaluate ballast fouling conditions, moisture content and subgrade conditions depending on frequencies of antenna and data processing techniques. In Australia, trial testing on railway sections has been conducted by the railway industry. However, in these trials, testing is only conducted on actual tracks where the relationship between track conditions and the GPR response has not yet been established. In this paper, a full scale model rail track designed and constructed at the University of Wollongong is used to investigate factors that infl uence the GPR data …

Evaluating Online Multiple Choice Quizzes As Formative Assessment Tools In An Engineering Fluid Mechanics Subject, David B. Hastie, Thomas Goldfinch

David Hastie

In an effort to improve learning outcomes in a second year Engineering Fluid Mechanics subject, the first author has developed and piloted a series of online multiple choice quizzes (MCQ) as formative assessment tools. This paper describes the development and implementation of these quizzes and the evaluation of their effect on students’ results in a formal written mid-session exam and also final exam. Students’ perception of the quizzes is also captured and discussed through the use of a brief, in class survey. The effect of these MCQs was investigated for two main cohorts of students, those who voluntarily attempted the …

Assessment Of The Structural Development Of Resin Bonded Taphole Clay (Icsti 06), Sharon Nightingale, Lisa Wells, F W B U Tanzil, Jim Cummins, Brian J. Monaghan, K Price

Brian Monaghan

Resin in taphole clay provides good extrudability and strength at low temperatures. However, it also contains volatile matter that is lost on heating. The blast furnace taphole is subject to a large thermal gradient, leading to variation in the bonding and structure of the clay along the taphole’s length. This has a critical effect on properties. Effects of this variation in properties on furnace operations are not well understood. A simple laboratory test was devised to simulate the thermal gradient, and assess its effects on taphole clays. Thermogravimetric tests were also conducted at different heating rates. Results of experiments are …

Engineering Assessment Development Report: Ahelo Feasibility Study, Jacob Pearce, Julian Fraillon, Hamish Coates, Sarah Richardson

Dr Jacob Pearce

No abstract provided.

The Impact Of Multiple Computing And Digital Arts Degrees On Undergraduate Recruitment, Amber Settle, Liz Friedman, Mary Jo Davidson

Amber Settle

Public Services Training At Wendt Library, Anne E. Rauh, Anne Glorioso

Anne Rauh

No abstract provided.

Portfolio Assessment In Aerodynamics, Nikos J. Mourtos

Nikos J. Mourtos

A new way of assessing student learning in an aerodynamics course through the use of portfolios is presented. The approach is portable to any engineering course, with a few modifications depending on content.

The main idea is to allow students more responsibility for their own learning. Instead of having everyone in the class perform identical activities (homework, experiments, projects, tests, etc.), a cadre of assignments is made available to them. Students choose and perform (within reason) the ones that suit them better in terms of their own strengths and learning styles. The ultimate goal is for each student to demonstrate …