ORCID Profile
0000-0002-7026-4795
Current Organisations
University of Southern Queensland - Springfield Campus
,
Queensland University of Technology
,
Acharya Nagarjuna University
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Manufacturing Engineering | Manufacturing Engineering Not Elsewhere Classified | Manufacturing Processes and Technologies (excl. Textiles) | Welding Technology | Robotics And Mechatronics | Simulation and Modelling | Nanotechnology | Materials Engineering | Metals and Alloy Materials | Cad/Cam Systems | Biomaterials | Nanoscale Characterisation | Computer Vision | Design Innovation | Automotive Engineering Materials | Artificial Intelligence and Image Processing | Timber, Pulp and Paper | Decision Support and Group Support Systems | Control Engineering | Petroleum and Reservoir Engineering | Biomedical Engineering Not Elsewhere Classified | Mechanical Engineering | Interdisciplinary Engineering | CAD/CAM Systems | Applied Mathematics | Simulation And Modelling | Medical Devices | Statistics | Infrastructure Engineering and Asset Management | Biomedical Engineering | Civil Engineering | Calculus of Variations, Systems Theory and Control Theory | Applied Statistics | Cellular Interactions (incl. Adhesion, Matrix, Cell Wall) | Nanomaterials | Expert Systems | Operations Research | Interdisciplinary Engineering Not Elsewhere Classified | Numerical Modelling and Mechanical Characterisation | Materials Engineering Not Elsewhere Classified | Computer Vision |
ANZSRC Socio-Economic Objective (SEO)
Industrial machinery and equipment | Integrated systems | Manufactured products not elsewhere classified | Air Terminal Infrastructure and Management | Coated Metal and Metal-Coated Products | Expanding Knowledge in Technology | Expanding Knowledge in the Information and Computing Sciences | Aluminium | Iron and steel (e.g. ingots, bars, rods, shapes and sections) | Solar-thermal | Neurodegenerative Disorders Related to Ageing | National Security | Air transport | Fabricated Metal Products not elsewhere classified | Oil and Gas Extraction | Wood, Wood Products and Paper not elsewhere classified | Health Related to Ageing | Industrial Machinery and Equipment | Structural Metal Products | Computer hardware and electronic equipment not elsewhere classified | Management and productivity issues not elsewhere classified | Social Structure and Health | Metals (composites, coatings, bonding, etc.) | Manufacturing not elsewhere classified | Semi-finished products | Sheet metal products | Surgical methods and procedures | Expanding Knowledge in the Medical and Health Sciences | Polymeric materials (e.g. paints) | Basic Iron and Steel Products | Expanding Knowledge in the Physical Sciences | Scientific Instruments | Expanding Knowledge in the Biological Sciences | Industrial gases | Expanding Knowledge in the Mathematical Sciences | Health Policy Economic Outcomes
Related Links
Publications
Quantification of cephalomedullary nail fit in the femur using 3D computer modelling: a comparison between 1.0 and 1.5m bow designs
Publisher: Springer Science and Business Media LLC
Date: 27-04-2016
Mg–Phenolic Network Strategy for Enhancing Corrosion Resistance and Osteocompatibility of Degradable Magnesium Alloys
Publisher: American Chemical Society (ACS)
Date: 11-12-2019
Functional and advanced functional and causal relationship diagrams for remote condition monitoring
Publisher: SAGE Publications
Date: 12-10-2012
Abstract: Analysing the condition of an asset is a big challenge as there can be many aspects which can contribute to the overall functional reliability of the asset that have to be considered. Inthis paper we propose a two-step functional and causal relationship diagram (FCRD) to address this problem. In the first step, the FCRD is designed to facilitate the analysis of the condition of an asset by evaluating the interdependence (functional and causal) relationships between different components of the asset with the help of a relationship diagram. This is followed by the advanced FCRD (AFCRD) which refines the information from the FCRD into a comprehensive and manageable format. This new two-step methodology for asset condition monitoring is tested and validated for the case of a water treatment plant.
Investigation of the effect of physical and optical factors on the optical performance of a Parabolic Trough Collector
Publisher: MDPI AG
Date: 20-11-2017
DOI: 10.3390/EN10111907
Agent-Based Modelling Simulation Case Study: Assessment of Airport Check-In and Evacuation Process by Considering Group Travel Behaviour of Air Passengers
Publisher: Trans Tech Publications, Ltd.
Date: 06-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.568-570.1859
Abstract: Passenger experience has become a major factor that influences the success of an airport. In this context, passenger flow simulation has been used in designing and managing airports. However, most passenger flow simulations failed to consider the group dynamics when developing passenger flow models. In this paper, an agent-based model is presented to simulate passenger behaviour at the airport check-in and evacuation process. The simulation results show that the passenger behaviour can have significant influences on the performance and utilisation of services in airport terminals. The model was created using AnyLogic software and its parameters were initialised using recent research data published in the literature.
An intelligent approach of knowledge searching within Internet-based distributive knowledge integrated environment
Publisher: Elsevier BV
Date: 12-2002
A collaborative engine for enterprise application integration
Publisher: Elsevier BV
Date: 09-2006
Investigation on temperature-dependent electrical conductivity of carbon nanotube/epoxy composites for sustainable energy applications
Publisher: American Scientific Publishers
Date: 09-2015
Abstract: Composites with carbon nanotubes are becoming increasingly used in energy storage and electronic devices, due to incorporated excellent properties from carbon nanotubes and polymers. Although their properties make them more attractive than conventional smart materials, their electrical properties have been found to be temperature-dependent which is important to consider for the design of devices. To study the effects of temperature in electrically conductive multi-wall carbon nanotube/epoxy composites, thin films were prepared and the effect of temperature on the resistivity, thermal properties and Raman spectral characteristics of the composite films was evaluated. Resistivity-temperature profiles showed three distinct regions in as-cured s les and only two regions in s les whose thermal histories had been erased. In the vicinity of the glass transition temperature, the as-cured composites exhibited pronounced resistivity and enthalpic relaxation peaks, which both disappeared after erasing the composites' thermal histories by temperature cycling. Combined DSC, Raman spectroscopy, and resistivity-temperature analyses indicated that this phenomenon can be attributed to the physical aging of the epoxy matrix and that, in the region of the observed thermal history-dependent resistivity peaks, structural rearrangement of the conductive carbon nanotube network occurs through a volume expansion/relaxation process. These results have led to an overall greater understanding of the temperature-dependent behaviour of conductive carbon nanotube/epoxy composites, including the positive temperature coefficient effect.
Numerical exploration of plastic deformation mechanisms of copper nanowires with surface defects
Publisher: Elsevier BV
Date: 12-2011
Automatic Solder Joint Defect Classification using the Log-Gabor Filter
Publisher: Trans Tech Publications, Ltd.
Date: 03-2010
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.97-101.2940
Abstract: This paper proposes the validity of a Gabor filter bank for feature extraction of solder joint images on Printed Circuit Boards (PCBs). A distance measure based on the Mahalanobis Cosine metric is also presented for classification of five different types of solder joints. From the experimental results, this methodology achieved high accuracy and a well generalised performance. This can be an effective method to reduce cost and improve quality in the production of PCBs in the manufacturing industry.
A Sensitivity Analysis of Train Speed and its Effect on Railway Capacity
Publisher: Trans Tech Publications, Ltd.
Date: 12-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1061-1062.1208
Abstract: Increasing train speeds is conceptually a simple and straight forward method to expand railway capacity, for ex le in comparison to other more extensive and elaborate alternatives. In this article an analytical capacity model has been investigated as a means of performing a sensitivity analysis of train speeds. The results of this sensitivity analysis can help improve the operation of this railway system and to help it cope with additional demands in the future. To test our approach a case study of the Rah Ahane Iran (RAI) national railway network has been selected. The absolute capacity levels for this railway network have been determined and the analysis shows that increasing trains speeds may not be entirely cost effective in all circumstances.
Study on the microwave curing of adhesive joints using a temperature-controlled feedback system
Publisher: Elsevier BV
Date: 06-1999
Scene Invariant Virtual Gates Using DNNs
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2019
Reproducibility of the computational fluid dynamic analysis of a cerebral aneurysm monitored over a decade
Publisher: Springer Science and Business Media LLC
Date: 05-01-2023
DOI: 10.1038/S41598-022-27354-W
Abstract: Computational fluid dynamics (CFD) simulations are increasingly utilised to evaluate intracranial aneurysm (IA) haemodynamics to aid in the prediction of morphological changes and rupture risk. However, these models vary and differences in published results warrant the investigation of IA-CFD reproducibility. This study aims to explore sources of intra-team variability and determine its impact on the aneurysm morphology and CFD parameters. A team of four operators were given six sets of magnetic resonance angiography data spanning a decade from one patient with a middle cerebral aneurysm. All operators were given the same protocol and software for model reconstruction and numerical analysis. The morphology and haemodynamics of the operator models were then compared. The segmentation, smoothing factor, inlet and outflow branch lengths were found to cause intra-team variability. There was 80% reproducibility in the time-averaged wall shear stress distribution among operators with the major difference attributed to the level of smoothing. Based on these findings, it was concluded that the clinical applicability of CFD simulations may be feasible if a standardised segmentation protocol is developed. Moreover, when analysing the aneurysm shape change over a decade, it was noted that the co-existence of positive and negative values of the wall shear stress ergence (WSSD) contributed to the growth of a daughter sac.
Performance investigation of high temperature application of molten solar salt nanofluid in a direct absorption solar collector
Publisher: MDPI AG
Date: 14-01-2019
DOI: 10.3390/MOLECULES24020285
Abstract: Nanofluids have great potential in a wide range of fields including solar thermal applications, where molten salt nanofluids have shown great potential as a heat transfer fluid (HTF) for use in high temperature solar applications. However, no study has investigated the use of molten salt nanofluids as the HTF in direct absorption solar collector systems (DAC). In this study, a two dimensional CFD model of a direct absorption high temperature molten salt nanofluid concentrating solar receiver has been developed to investigate the effects design and operating variables on receiver performance. It has been found that the Carnot efficiency increases with increasing receiver length, solar concentration, increasing height and decreasing inlet velocity. When coupled to a power generation cycle, it is predicted that total system efficiency can exceed 40% when solar concentrations are greater than 100×. To impart more emphasis on the temperature rise of the receiver, an adjusted Carnot efficiency has been used in conjunction with the upper temperature limit of the nanofluid. The adjusted total efficiency also resulted in a peak efficiency for solar concentration, which decreased with decreasing volume fraction, implying that each receiver configuration has an optimal solar concentration.
A capacity assessment approach for multi-modal transportation systems
Publisher: Elsevier BV
Date: 12-2017
Tensile properties of si nanowires with faulted stacking layers
Publisher: American Scientific Publishers
Date: 07-2014
Experimental studies on comparison of microwave curing and thermal curing of epoxy resins used for alternative mould materials
Publisher: Elsevier BV
Date: 11-2004
An advanced meshless technique for large deformation analysis of metal forming
Publisher: Informa UK Limited
Date: 2009
Effects of nanopillar size and spacing on mechanical perturbation and bactericidal killing efficiency
Publisher: MDPI AG
Date: 22-09-2021
DOI: 10.3390/NANO11102472
Abstract: Nanopatterned surfaces administer antibacterial activity through contact-induced mechanical stresses and strains, which can be modulated by changing the nanopattern’s radius, spacing and height. However, due to conflicting recommendations throughout the theoretical literature with poor agreement to reported experimental trends, it remains unclear whether these key dimensions—particularly radius and spacing—should be increased or decreased to maximize bactericidal efficiency. It is shown here that a potential failure of biophysical models lies in neglecting any out-of-plane effects of nanopattern contact. To highlight this, stresses induced by a nanopattern were studied via an analytical model based on minimization of strain and adhesion energy. The in-plane (areal) and out-of-plane (contact pressure) stresses at equilibrium were derived, as well as a combined stress (von Mises), which comprises both. Contour plots were produced to illustrate which nanopatterns elicited the highest stresses over all combinations of tip radius between 0 and 100 nm and center spacing between 0 and 200 nm. Considering both the in-plane and out-of-plane stresses drastically transformed the contour plots from those when only in-plane stress was evaluated, clearly favoring small tipped, tightly packed nanopatterns. In addition, the effect of changes to radius and spacing in terms of the combined stress showed the best qualitative agreement with previous reported trends in killing efficiency. Together, the results affirm that the killing efficiency of a nanopattern can be maximized by simultaneous reduction in tip radius and increase in nanopattern packing ratio (i.e., radius/spacing). These findings provide a guide for the design of highly bactericidal nanopatterned surfaces.
Determining of Poisson’s Ratio and Young’s Modulus of Pumpkin Tissue- Using Laser Measurement Sensors
Publisher: Elsevier BV
Date: 2018
Design and development of automatic visual inspection system for PCB manufacturing
Publisher: Elsevier BV
Date: 10-2011
Modelling the Height of Hydrothermally Synthesized Titanium Dioxide Nanostructures
Publisher: International Association of Advanced Materials
Date: 06-2020
An intuitive dashboard for bayesian network inference
Publisher: IOP Publishing
Date: 11-03-2014
Performance of Graphite-Dispersed Li2CO3-K2CO3 Molten Salt Nanofluid for a Direct Absorption Solar Collector System
Publisher: MDPI AG
Date: 16-01-2020
DOI: 10.3390/MOLECULES25020375
Abstract: Considered to be the next generation of heat transfer fluids (HTFs), nanofluids have been receiving a growing interest over the past decade. Molten salt nanofluids have been shown to have great potential as an HTF for use in high temperature applications such as direct absorption solar collector (DAC) system. Very few studies using molten salt nanofluids as the HTF in a DAC receiver can be found in the open literature. This study aimed to develop a 3D computational fluid dynamics model of the receiver of a DAC using graphite-nanoparticle-dispersed Li2CO3-K2CO3 molten salt nanofluid to investigate the effects of design and operation parameters on receiver performance. Receiver total efficiency using Li2CO3-K2CO3 salt was compared with that using solar salt nanofluid. Spectral properties of the base fluid and nanoparticles were modeled as wavelength-dependent and the absorption of the solar radiation was modeled as a volumetric heat release in the flowing heat transfer fluid. Initial results show that the receiver efficiency increases with increasing solar concentration, decreasing nanoparticle volume fraction, and decreasing receiver length. It was also found that the Carnot efficiency increases with increasing receiver length and nanoparticle volume fraction, and decreasing solar concentration and inlet velocity. Comparative study shows that solar salt HTF could provide higher total efficiency. However, a higher operating temperature of Li2CO3-K2CO3 will allow for a greater amount of thermal energy storage for a smaller volume of liquid.
A configuration-based flexible reporting method for enterprise information systems
Publisher: Elsevier BV
Date: 06-2007
A study on an intelligent system to predict the tensile stress in welding using solar energy concentration
Publisher: Elsevier BV
Date: 11-2004
Study of Structural Changes of Pumpkin Tissue before and after Mechanical Loading
Publisher: Trans Tech Publications, Ltd.
Date: 07-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.333-335.1998
Abstract: The texture of agricultural crops changes during harvesting, post harvesting and processing stages due to different loading processes. There are different source of loading that deform agricultural crop tissues and these include impact, compression, and tension. Scanning Electron Microscope (SEM) method is a common way of analysing cellular changes of materials before and after these loading operations. This paper examines the structural changes of pumpkin peel and flesh tissues under mechanical loading. Compression and indentation tests were performed on peel and flesh s les. S les structure were then fixed and dehydrated in order to capture the cellular changes under SEM. The results were compared with the images of normal peel and flesh tissues. The findings suggest that normal flesh tissue had bigger size cells, while the cellular arrangement of peel was smaller. Structural damage was clearly observed in tissue structure after compression and indentation. However, the damages that resulted from the flat end indenter was much more severe than that from the spherical end indenter and compression test. An integrated deformed tissue layer was observed in compressed tissue, while the indentation tests shaped a deformed area under the indenter and left the rest of the tissue unharmed. There was an obvious broken layer of cells on the walls of the hole after the flat end indentations, whereas the spherical indenter created a squashed layer all around the hole. Furthermore, the influence of loading was lower on peel s les in comparison with the flesh s les. The experiments have shown that the rate of damage on tissue under constant rate of loading is highly dependent on the shape of equipment. This fact and observed structural changes after loading underline the significance of deigning postharvesting equipments to reduce the rate of damage on agricultural crop tissues.
Nanoscale texture on glass and Titanium substrates by physical vapor deposition process
Publisher: Elsevier BV
Date: 2014
A multi commodity flow model incorporating flow reduction functions
Publisher: Springer Science and Business Media LLC
Date: 08-04-2019
The structure and implementation of a distributed integrated information system for product design
Publisher: Inderscience Publishers
Date: 2003
ZnCdSe-ZnSe Cladded Quantum Dots using Photoassisted Microwave Plasma Enhanced Metalorganic Chemical Vapor Deposition for Lasers and Electroluminescent Phosphors
Publisher: OSA
Date: 2006
HOT DEFORMATION STUDIES ON A LOW-CARBON STEEL
Publisher: Elsevier BV
Date: 1996
A review on degradation models in reliability analysis
Publisher: Springer London
Date: 2010
An Intuitive Multi-Touch Surface and Gesture Based Interaction for Video Surveillance Systems
Publisher: EJournal Publishing
Date: 2014
A review on reliability models with covariates
Publisher: Springer London
Date: 2010
An investigation into the performance of solar cured adhesive bonded joints
Publisher: Elsevier BV
Date: 06-2001
Impact of Digital Manufacturing on Health Care Industry
Publisher: Global Science & Technology Forum (GSTF)
Date: 06-03-2017
Bactericidal efficiency of micro- And nanostructured surfaces: A critical perspective
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0RA08878A
Abstract: Micro/nanostructured surfaces (MNSS) have shown the ability to inactivate bacterial cells by physical means.
Characterization of the atherosclerotic plaque tissue
Publisher: International Association of Advanced Materials
Date: 05-2020
Framework for Airport Outbound Passenger Flow Modelling
Publisher: Elsevier BV
Date: 2017
Reducing bubble defect on the outsole production process in the footwear manufacturing industry
Publisher: Trans Tech Publications, Ltd.
Date: 07-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.988.759
Abstract: The purpose of this study is to discover the significant factors causing the bubble defect on the outsoles manufactured by the Case Company. The bubble defect occurs approximately 1.5 per cent of the time or in 36 pairs per day. To understand this problem, experimental studies are undertaken to identify various factors such as injector temperature, mould temperature that affects the production of waste. The work presented in this paper comprises a review of the relevant literature on the Six Sigma DMAIC improvement process, quality control tools, and the design of the experiments. After the experimentation following the Six Sigma process, the results showed that the defect occurred in approximately 0.5 per cent of the products or in 12 pairs per day this decreased the production cost from 6,120 AUD per month to 2,040 AUD per month. This research aimed to reduce the amount of waste in men’s flat outsoles. Hence, the outcome of research presented in this paper should be used as a guide for applying the appropriate process for each type of outsole.
A complete solution for neutral knowledge representation within collaborative product development environment
Publisher: Springer Science and Business Media LLC
Date: 12-01-2005
Development of an integrated neural network system for prediction of process parameters in metal injection moulding
Publisher: Elsevier BV
Date: 12-2002
Investigating the properties of tin-oxide thin film developed by sputtering process for perovskite solar cells
Publisher: Springer Science and Business Media LLC
Date: 22-12-2023
DOI: 10.1007/S40243-022-00226-Z
Abstract: Tin oxide (SnO 2 ) nano-crystalline thin films were deposited on silicon and glass substrates at room temperature by sputtering at a constant power of 30 W and different working pressure of 10, 7, and 5 mTorr. Surface morphology, electrical and optical properties of the films were investigated to optimise the deposition condition of the films as electron transport layer (ETL) for high-power conversion efficiency perovskite solar cells. The films were characterized by scanning electron microscopy (SEM), UV–Vis–NIR Spectrophotometer, and Four-point probe. SnO 2 films obtained at working pressure of 10 mTorr exhibited uniform surface morphology with high light transmittance (90%) and conductivity (4 S/m). These sputtered SnO 2 films appeared to have shown promising properties as ETL for PSC, and further investigation is justified to establish the optimal fabrication parameters and resulting energy conversion efficiency.
Recent advances in manufacturing and surface modification of titanium orthopaedic applications
Publisher: Elsevier BV
Date: 2017
Perspectives of ‘STEM education and policies’ for the development of a skilled workforce in Australia and India
Publisher: Informa UK Limited
Date: 05-09-2018
Bio-mimicking nano and micro-structured surface fabrication for antibacterial properties in medical implants
Publisher: Springer Science and Business Media LLC
Date: 02-10-2017
Prediction of GMA welding characteristic parameter by artificial neural network system
Publisher: Trans Tech Publications, Ltd.
Date: 12-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1061-1062.481
Abstract: Nowadays, demand for automated Gas metal arc welding (GMAW) is growing and consequently need for intelligent systems is increased to ensure the accuracy of the procedure. To date, welding pool geometry has been the most used factor in quality assessment of intelligent welding systems. But, it has recently been found that Mahalanobis Distance (MD) not only can be used for this purpose but also is more efficient. In the present paper, Artificial Neural Networks (ANN) has been used for prediction of MD parameter. However, advantages and disadvantages of other methods have been discussed. The Levenberg–Marquardt algorithm was found to be the most effective algorithm for GMAW process. It is known that the number of neurons plays an important role in optimal network design. In this work, using trial and error method, it has been found that 30 is the optimal number of neurons. The model has been investigated with different number of layers in Multilayer Perceptron (MLP) architecture and has been shown that for the aim of this work the optimal result is obtained when using MLP with one layer. Robustness of the system has been evaluated by adding noise into the input data and studying the effect of the noise in prediction capability of the network. The experiments for this study were conducted in an automated GMAW setup that was integrated with data acquisition system and prepared in a laboratory for welding of steel plate with 12 mm in thickness. The accuracy of the network was evaluated by Root Mean Squared (RMS) error between the measured and the estimated values. The low error value (about 0.008) reflects the good accuracy of the model. Also the comparison of the predicted results by ANN and the test data set showed very good agreement that reveals the predictive power of the model. Therefore, the ANN model offered in here for GMA welding process can be used effectively for prediction goals.
Nanomechanical surface properties of co-sputtered thin film polymorphic metallic glasses based on Ti-Fe-Cu, Zr-Fe-Al, and Zr-W-Cu
Publisher: Elsevier BV
Date: 08-2023
Design, development and evaluation of 3D mold inserts using a rapid prototyping technique and powder-sintering process
Publisher: Informa UK Limited
Date: 03-3009
Anodization of medical grade stainless steel for improved corrosion resistance and nanostructure formation targeting biomedical applications
Publisher: Elsevier BV
Date: 06-2022
Modelling the growth of hydrothermally synthesised bactericidal nanostructures, as a function of processing conditions
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.MSEC.2019.110434
Abstract: In recent times, large research focus has been placed on nanostructured materials as a method of killing bacteria. Previous work in this area has found that hydrothermally synthesised TiO
Advanced numerical characterization of mono-crystalline copper with defects
Publisher: American Scientific Publishers
Date: 04-2011
An effective multiscale approach for deformation analyses of carbon nanotubebased nanoswitches
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.813893
Development of a new PM titanium alloy for improved processability
Publisher: Informa UK Limited
Date: 02-2005
Digital Manufacturing- Applications Past, Current, and Future Trends
Publisher: Elsevier BV
Date: 2017
Hierarchical multiscale model for biomechanics analysis of microfilament networks
Publisher: AIP Publishing
Date: 21-05-2013
DOI: 10.1063/1.4805029
A mathematical model for bend-allowance calculation in automated sheet-metal bending
Publisher: Elsevier BV
Date: 11-1993
Tensile Properties of Pumpkin Peel and Flesh Tissue and Review of Current Testing Methods
Publisher: American Society of Agricultural and Biological Engineers (ASABE)
Date: 04-09-2013
Molecular investigation of the mechanical properties of single actin filaments based on vibration analyses
Publisher: Informa UK Limited
Date: 16-07-2014
DOI: 10.1080/10255842.2012.706279
Abstract: The mechanical vibration properties of single actin filaments from 50 to 288 nm are investigated by the molecular dynamics simulation in this study. The natural frequencies obtained from the molecular simulations agree with those obtained from the analytical solution of the equivalent Euler-Bernoulli beam model. Through the convergence study of the mechanical properties with respect to the filament length, it was found that the Euler-Bernoulli beam model can only be reliably used when the single actin filament is of the order of hundreds of nanometre scale. This molecular investigation not only provides the evidence for the use of the continuum beam model in characterising the mechanical properties of single actin filaments, but also clarifies the criteria for the effective use of the Euler-Bernoulli beam model.
Information support for health information management in regional Sri Lanka: health managers' perspectives
Publisher: SAGE Publications
Date: 10-2012
DOI: 10.1177/183335831204100303
Abstract: Good management, supported by accurate, timely and reliable health information, is vital for increasing the effectiveness of Health Information Systems (HIS). When it comes to managing the under-resourced health systems of developing countries, information-based decision making is particularly important. This paper reports findings of a self-report survey that investigated perceptions of local health managers (HMs) of their own regional HIS in Sri Lanka. Data were collected through a validated, pre-tested postal questionnaire, and distributed among a selected group of HMs to elicit their perceptions of the current HIS in relation to information generation, acquisition and use, required reforms to the information system and application of information and communication technology (ICT). Results based on descriptive statistics indicated that the regional HIS was poorly organised and in need of reform that management support for the system was unsatisfactory in terms of relevance, accuracy, timeliness and accessibility that political pressure and community and donor requests took precedence over vital health information when management decisions were made and use of ICT was unsatisfactory. HIS strengths included user-friendly paper formats, a centralised planning system and an efficient disease notification system weaknesses were lack of comprehensiveness, inaccuracy, and lack of a feedback system. Responses of participants indicated that HIS would be improved by adopting an internationally accepted framework and introducing ICT applications. Perceived barriers to such improvements were high initial cost of educating staff to improve computer literacy, introduction of ICTS, and HIS restructure. We concluded that the regional HIS of Central Province, Sri Lanka had failed to provide much-needed information support to HMS. These findings are consistent with similar research in other developing countries and reinforce the need for further research to verify causes of poor performance and to design strategic reforms to improve HIS in regional Sri Lanka.
Importance of knowledge management processes in a project-based organization: A case study of research enterprise
Publisher: Elsevier BV
Date: 2014
Business information modeling for process integration in the mold making industry
Publisher: Elsevier BV
Date: 04-2007
Bacteria Death and Osteoblast Metabolic Activity Correlated to Hydrothermally Synthesised TiO2 Surface Properties
Publisher: MDPI AG
Date: 27-03-2019
DOI: 10.3390/MOLECULES24071201
Abstract: Orthopaedic surgery comes with an inherent risk of bacterial infection, prolonged antibiotic therapy and revision surgery. Recent research has focused on nanostructured surfaces to improve the bactericidal and osseointegrational properties of implants. However, an understanding of the mechanical properties of bactericidal materials is lacking. In this work, the surface properties of hydrothermal TiO2 nanostructured surfaces are investigated for their effect on bactericidal efficiency and cellular metabolic activity of human osteoblast cells. TiO2 nanostructures, approximately 307 nm in height and 14 GPa stiffness, were the most effective structures against both gram-positive (Staphylococcus aureus) and gram-negative (Pseudomonas aeruginosa) bacteria. Statistical analysis significantly correlated structure height to the death of both bacteria strains. In addition, the surface contact angle and Young’s modulus were correlated to osteoblast metabolic activity. Hydrophilic surfaces with a contact angle between 35 and 50° produced the highest cellular metabolic activity rates after 24 hours of incubation. The mechanical tests showed that nanostructures retain their mechanical stability and integrity over a long time-period, reaffirming the surfaces’ applicability for implants. This work provides a thorough examination of the surface, mechanical and wettability properties of multifunctional hydrothermally synthesised nanostructured materials, capable of killing bacteria whilst improving osteoblast metabolic rates, leading to improved osseointegration and antibacterial properties of orthopaedic implants.
Microwave processing of adhesive joints using a temperature controlled feedback system
Publisher: Elsevier BV
Date: 2001
Investigation of the Factors That Contribute to Fresh Fruit and Vegetable Losses in the Australian Fresh Food Supply Chain
Publisher: MDPI AG
Date: 09-04-2023
DOI: 10.3390/PR11041154
Abstract: Fruit and vegetables (FV) are the major source of bioactive compounds for human beings. FV supply chains are complex and sensitive due to various features, including the seasonality of products, variations in demand, and short shelf-lives. The amount of waste in FV supply chains is significant compared with other supply chains as 44% of fresh FV produced globally are wasted in the food chain. This large amount of waste has a significant impact on the economy, food security, available natural resources, and the environment. To reduce food losses in the fresh food supply chain (FFSC), the root causes of waste must be first identified. While a number of researchers have investigated food losses in Australia, most only consider a specific stage in the supply chain and multiple stages in the FFSC are often overlooked. Additionally, the impact of advanced storage technologies, packing, handling, and transport on food losses should be investigated. Furthermore, supply chain practices are changing in response to uncertainties, such as the pandemic and climate changes, which also need to be captured. This research aims to identify the key factors contributing to fresh fruit and vegetable losses through a comprehensive empirical study. Primary data were collected through a well-designed questionnaire-based survey targeting major stakeholders in the FFSC, including farmers, distributors, and retailers in Australia. The survey investigates current postharvest practices and the effects of these practices on food losses. The main factors influencing food losses were identified and the options to reduce these losses were outlined. The results showed that losses mostly occurred at the farm level, and picking practices and preharvest conditions largely contributed to FV losses. The results highlight the need for proper training and education for workers involved in harvesting and handling fresh produce.
Automated fit quantification of tibial nail designs during the insertion using computer three-dimensional modelling
Publisher: SAGE Publications
Date: 12-2014
Abstract: Intramedullary nailing is the standard fixation method for displaced diaphyseal fractures of the tibia. An optimal nail design should both facilitate insertion and anatomically fit the bone geometry at its final position in order to reduce the risk of stress fractures and malalignments. Due to the nonexistence of suitable commercial software, we developed a software tool for the automated fit assessment of nail designs. Furthermore, we demonstrated that an optimised nail, which fits better at the final position, is also easier to insert. Three-dimensional models of two nail designs and 20 tibiae were used. The fitting was quantified in terms of surface area, maximum distance, sum of surface areas and sum of maximum distances by which the nail was protruding into the cortex. The software was programmed to insert the nail into the bone model and to quantify the fit at defined increment levels. On average, the misfit during the insertion in terms of the four fitting parameters was smaller for the Expert Tibial Nail Proximal bend (476.3 mm 2 , 1.5 mm, 2029.8 mm 2 , 6.5 mm) than the Expert Tibial Nail (736.7 mm 2 , 2.2 mm, 2491.4 mm 2 , 8.0 mm). The differences were statistically significant ( p ≤ 0.05). The software could be used by nail implant manufacturers for the purpose of implant design validation.
HOT DEFORMATION STUDIES ON A LOW-CARBON STEEL
Publisher: Elsevier BV
Date: 1996
Effect of the orientation schemes of the energy collection element on the optical performance of a parabolic trough concentrating collector
Publisher: MDPI AG
Date: 31-12-2019
DOI: 10.3390/EN12010128
Abstract: While the circular shape is currently the proven optimum design of the energy collection element (ECE) of a parabolic trough collector, that is yet to be confirmed for parabolic trough concentrating collectors (PTCCs) like trough concentrating photovoltaic collectors and hybrid photovoltaic/thermal collectors. Orientation scheme of the ECE is expected to have significant effect on the optical performance including the irradiance distribution around the ECE and the optical efficiency, and therefore, on the overall energy performance of the PTCC. However, little progress addressing this issue has been reported in the literature. In this study, a thorough investigation has been conducted to determine the effect of the orientation schemes of ECE on the optical performance of a PTCC applying a state-of-the-art Monte Carlo ray tracing (MCRT) technique. The orientation schemes considered are a flat rectangular target and a hollow circular, semi-circular, triangular, inverted triangular, rectangular and rectangle on semi-circle (RSc). The effect of ECE defocus, Sun tracking error and trough rim angle on the optical performance is also investigated. The MCRT study reveals that the ECE orientation schemes with a curved surface at the trough end showed much higher optical efficiency than those with a linear surface under ideal conditions. ECEs among the linear surface group, the inverted triangular orientation exhibited the highest optical efficiency, whereas the flat and triangular ones exhibited the lowest optical efficiency, and the rectangular one was in between them. In the event of defocus and tracking errors, a significant portion of the concentrated light was observed to be intercepted by the surfaces of the rectangular and RSc ECEs that are perpendicular to the trough aperture. This is an extended version of a published work by the current authors, which will help to design an optically efficient ECE for a parabolic trough concentrating collector.
Agent-Based Application on Different Boarding Strategies
Publisher: Trans Tech Publications, Ltd.
Date: 06-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.568-570.1893
Abstract: In this paper we implemented six different boarding strategies (Wilma, Steffen, Reverse Pyramid, Random, Blocks and By letter) in order to minimize boarding time and turnaround time for Boeing 777 and Airbus 380 aircrafts by using Agent-based modelling approach. In the simulation, we ided passengers into six different categories which are group size more than 5 people, passengers with child, gold members, first class passengers, business class passengers and economy class passengers. Results from the simulation demonstrates Reverse Pyramid method is the best boarding method for Boeing 777 and Steffen method is the best boarding method for Airbus 380.
A neural network system for the prediction of process parameters in pressure die casting
Publisher: Elsevier BV
Date: 05-1999
Study of tissue damage during mechanical peeling of tough skinned vegetables
Publisher: Global Science & Technology Forum (GSTF)
Date: 12-12-2011
Adaptations and Lessons from COVID-19: A Perspective on How some Industries will be Impacted
Publisher: International Association of Advanced Materials
Date: 07-2020
Feasibility studies on the production of electro-discharge machining electrodes with rapid prototyping and the electroforming process
Publisher: Elsevier BV
Date: 05-1999
Mechanics of polyropylene-seed-coat-fibres composites and polyropylene - Wood fibres composites - A comparative study
Publisher: Elsevier BV
Date: 2014
Preferential adhesion of bacterial cells onto top- and bottom-mounted nanostructured surfaces under flow conditions
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3NA00581J
Antiviral and Antibacterial Nanostructured Surfaces with Excellent Mechanical Properties for Hospital Applications
Publisher: American Chemical Society (ACS)
Date: 07-05-2020
Regenerative sustainability and geodesign in Byron Shire
Publisher: 7th International Conference on Energy and Environment of Residential Buildings, November 20-24 2016, Brisbane, Australia
Date: 2016
Studies of Bone Cell Adhesion and Proliferation on Ion Implanted Titanium Discs
Publisher: Springer Berlin Heidelberg
Date: 2011
A Mathematical Framework for Regional Hospital Case Mix Planning and Capacity Appraisal
Publisher: Elsevier BV
Date: 2023
Implementation of lean manufacturing in Saudi manufacturing organisations: An empirical study
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.339.250
Abstract: Abstract: In this paper, the level of lean manufacturing implementation by Saudi manufacturing companies is investigated, the extent of application of lean manufacturing practice is identified and the benefits and barriers of Lean implementation are evaluated. The results reported in this paper are based on data collected from a survey using a standard questionnaire administered to 120 manufacturers in Saudi Arabia. Evidence indicates that large size companies are more likely to implement and gain the advantages of lean manufacturing than small and medium size companies. The most implemented lean manufacturing tools are Computerized Planning Systems, TQM, Maintenance Optimization and CIP. Main barriers against lean manufacturing implementation include the organization culture, lack of management commitment and lack of skilled workers. Results also show that benefits gained from lean manufacturing implementation are significant and are correlated with the level of implementation of lean strategies.
An Empirical Model for Predicting the Fresh Food Quality Changes during Storage
Publisher: MDPI AG
Date: 24-05-2023
Abstract: It is widely recognized that the quality of fruits and vegetables can be altered during transportation and storage. Firmness and loss of weight are the crucial attributes used to evaluate the quality of various fruits, as many other quality attributes are related to these two attributes. These properties are influenced by the surrounding environment and preservation conditions. Limited research has been conducted to accurately predict the quality attributes during transport and storage as a function of storage conditions. In this research, extensive experimental investigations have been conducted on the changes in quality attributes of four fresh apple cultivars (Granny Smith, Royal Gala, Pink Lady, and Red Delicious) during transportation and storage. The study evaluated the weight loss and change in firmness of these apples varieties at different cooling temperatures ranging from 2 °C to 8 °C to assess the impact of storing at these temperatures on the quality attributes. The results indicate that the firmness of each cultivar continuously decreased over time, with the R2 values ranging from 0.9489–0.8691 for red delicious, 0.9871–0.9129 for royal gala, 0.9972–0.9647 for pink lady, and 0.9964–0.9484 for granny smith. The rate of weight loss followed an increasing trend with time, and the high R2 values indicate a strong correlation. The degradation of quality was evident in all four cultivars, with temperature having a significant impact on firmness. The decline in firmness was found to be minimal at 2 °C, but increased as the storage temperature increased. The loss of firmness also varied among the four cultivars. For instance, when stored at 2 °C, the firmness of pink lady decreased from an initial value of 8.69 kg·cm2 to 7.89 kg·cm2 in 48 h, while the firmness of the same cultivar decreased from 7.86 kg·cm2 to 6.81 kg·cm2 after the same duration of storage. Based on the experimental results, a multiple regression quality prediction model was developed as a function of temperature and time. The proposed models were validated using a new set of experimental data. The correlation between the predicted and experimental values was found to be excellent. The linear regression equation yielded an R2 value of 0.9544, indicating a high degree of accuracy. The model can assist stakeholders in the fruit and fresh produce industry in anticipating quality changes at different storage stages based on the storage conditions.
Orthopedic bone plates : evolution in structure implementation technique and biomaterial
Publisher: No publisher found
Date: 2012
A study on prediction of bead height in robotic arc welding using a neural network
Publisher: Elsevier BV
Date: 12-2002
Internet-based intensive product design platform for product design
Publisher: Elsevier BV
Date: 2003
An in-depth comparison of four texture segmentation methods
Publisher: IEEE
Date: 12-2007
Microwave curing of non-traditional polymer materials used in manufacture of injection moulds
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.338.214
Abstract: Microwave heating technology is a cost-effective alternative way for heating and curing of used in polymer processing of various alternate materials. The work presented in this paper addresses the attempts made by the authors to study the glass transition temperature and curing of materials such as casting resins R2512, R2515 and laminating resin GPR 2516 in combination with two hardeners ADH 2403 and ADH 2409. The magnetron microwave generator used in this research is operating at a frequency of 2.45 GHz with a hollow rectangular waveguide. During this investigation it has been noted that microwave heated mould materials resulted with higher glass transition temperatures and better microstructure. It also noted that Microwave curing resulted in a shorter curing time to reach the maximum percentage cure. From this study it can be concluded that microwave technology can be efficiently and effectively used to cure new generation alternate polymer materials for manufacture of injection moulds in a rapid and efficient manner. Microwave curing resulted in a shorter curing time to reach the maximum percentage cure.
A bridging transition technique for the combination of meshfree method with finite element method in 2D solids and structures
Publisher: Springer Science and Business Media LLC
Date: 27-01-2009
Can we safely deform a plate to fit every bone? Population-based fit assessment and finite element deformation of a distal tibial plate
Publisher: Elsevier BV
Date: 03-2016
DOI: 10.1016/J.MEDENGPHY.2015.11.012
Abstract: Anatomically precontoured plates are commonly used to treat periarticular fractures. A well-fitting plate can be used as a tool for anatomical reduction of the fractured bone. Recent studies highlighted that some plates fit poorly for many patients due to considerable shape variations between bones of the same anatomical site. While it is impossible to design one shape that fits all, it is also burdensome for the manufacturers and hospitals to produce, store and manage multiple plate shapes without the certainty of utilization by a patient population. In this study, we investigated the number of shapes required for maximum fit within a given dataset, and if they could be obtained by manually deforming the original plate. A distal medial tibial plate was automatically positioned on 45 in idual tibiae, and the optimal deformation was determined iteratively using finite element analysis simulation. Within the studied dataset, we found that: (i) 89% fit could be achieved with four shapes, (ii) 100% fit was impossible through mechanical deformation, and (iii) the deformations required to obtain the four plate shapes were safe for the stainless steel plate for further clinical use. The proposed framework is easily transferable to other orthopaedic plates.
A PDM-based Framework for Design to Manufacturing in Mold Making Industry - A Case Study of Business Process Integration
Publisher: CAD Solutions, LLC
Date: 2006
Meeting challenges in welding of aluminum alloys through pulse gas metal arc welding
Publisher: Elsevier BV
Date: 05-2005
A multiscale deformation analysis for mono-crystalline copper under dynamic uniaxial tension
Publisher: Trans Tech Publications Ltd.
Date: 09-02-2008
Internet-based distributive knowledge integrated system for product design
Publisher: Elsevier BV
Date: 02-2003
A Framework for Sharing Staff between Outbound and Inbound Airport Processes
Publisher: MDPI AG
Date: 02-06-2020
DOI: 10.3390/MATH8060895
Abstract: This paper proposes an advanced simulation-optimization approach to evaluate and optimize the passenger flows within international airports. This approach allocates resources intelligently during the simulation process and balances demand and service quality. The resource allocation performed by our Advanced Resource Management (ARM) algorithm was used to develop an integrated system for arranging resources, identifying the proper resources, and allocating them throughout the model. It was used to investigate the influences of different staff allocation techniques on the inbound and outbound processes of an airport terminal. The purpose of the proposed simulation-optimization approach is to enhance passenger satisfaction through ensuring reasonable wait times during processing at the lowest cost possible (minimal staff hours).
Recommendations to reduce inequalities for LGBT people facing advanced illness: ACCESSCare national qualitative interview study
Publisher: SAGE Publications
Date: 14-05-2018
Abstract: Lesbian, gay, bisexual and/or trans (LGBT) people have higher risk of certain life-limiting illnesses and unmet needs in advanced illness and bereavement. ACCESSCare is the first national study to examine in depth the experiences of LGBT people facing advanced illness. To explore health-care experiences of LGBT people facing advanced illness to elicit views regarding sharing identity (sexual orientation/gender history), accessing services, discrimination/exclusion and best-practice ex les. Semi-structured in-depth qualitative interviews analysed using thematic analysis. In total, 40 LGBT people from across the United Kingdom facing advanced illness: cancer ( n = 21), non-cancer ( n = 16) and both a cancer and a non-cancer conditions ( n = 3). In total, five main themes emerged: (1) person-centred care needs that may require additional/different consideration for LGBT people (including different social support structures and additional legal concerns), (2) service level or interactional (created in the consultation) barriers/stressors (including heteronormative assumptions and homophobic/transphobic behaviours), (3) invisible barriers/stressors (including the historical context of pathology/criminalisation, fears and experiences of discrimination) and (4) service level or interactional facilitators (including acknowledging and including partners in critical discussions). These all shape (5) in iduals’ preferences for disclosing identity. Prior experiences of discrimination or violence, in response to disclosure, were carried into future care interactions and heightened with the frailty of advanced illness. Despite recent legislative change, experiences of discrimination and exclusion in health care persist for LGBT people. Ten recommendations, for health-care professionals and services/institutions, are made from the data. These are simple, low cost and offer potential gains in access to, and outcomes of, care for LGBT people.
Mechanical Behaviours of Pumpkin Peel under Compression Test
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.337.3
Abstract: Abstract Mechanical damages such as bruising, collision and impact during food processing stages diminish quality and quantity of productions as well as efficiency of operations. Studying mechanical characteristics of food materials will help to enhance current industrial practices. Mechanical properties of fruits and vegetables describe how these materials behave under loading in real industrial operations. Optimizing and designing more efficient equipments require accurate and precise information of tissue behaviours. FE modelling of food industrial processes is an effective method of studying interrelation of variables during mechanical operation. In this study, empirical investigation has been done on mechanical properties of pumpkin peel. The test was a part of FE modelling and simulation of mechanical peeling stage of tough skinned vegetables. The compression test has been conducted on Jap variety of pumpkin. Additionally, stress strain curve, bio-yield and toughness of pumpkin skin have been calculated. The required energy for reaching bio-yield point was 493.75, 507.71 and 451.71 N.mm for 1.25, 10 and 20 mm/min loading speed respectively. Average value of force in bio-yield point for pumpkin peel was 310 N.
Combining Opinions for Use in Bayesian Networks: A Measurement Error Approach
Publisher: Wiley
Date: 29-12-2019
DOI: 10.1111/INSR.12350
Remaining useful life prediction of rotating equipment using covariate-based hazard models – Industry applications
Publisher: Informa UK Limited
Date: 09-11-2015
The Explicit Hazard Model- part 1: Theoretical development
Publisher: IEEE
Date: 2010
Optimal design of neural networks for control in robotic arc welding
Publisher: Elsevier BV
Date: 02-2004
Finite element analysis of high strain rate superplastic forming (SPF) of Al–Ti alloys
Publisher: Elsevier BV
Date: 12-2002
Antiviral Nanostructured Surfaces Reduce the Viability of SARS-CoV-2
Publisher: American Chemical Society (ACS)
Date: 31-08-2020
CASNS—a heuristic algorithm for the nesting of irregular-shaped sheet-metal blanks
Publisher: Institution of Engineering and Technology (IET)
Date: 1991
Experimental and numerical investigation of the toughening mechanisms in bioinspired composites prepared by freeze casting
Publisher: Elsevier BV
Date: 09-2019
Pedestrian Dynamics in Real and Simulated World
Publisher: American Society of Civil Engineers (ASCE)
Date: 09-2015
A new constitutive analysis of hexagonal close-packed metal in equal channel angular pressing by crystal plasticity finite element method
Publisher: Springer Science and Business Media LLC
Date: 03-07-2018
Simulation-based comparison of pull-push system in motorcycle assembly line
Publisher: Trans Tech Publications, Ltd.
Date: 12-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.241-244.1507
Abstract: To investigate the effects of adopting a pull system in assembly lines in contrast to a push system, simulation software called “ARENA” is used as a tool in order to present numerical results from both systems. Simulation scenarios are created to evaluate the effects of attributes changing in assembly systems, with influential factors including the change of manufacturing system (push system to pull system) and variation of demand. Moreover, pull system manufacturing consists of the addition attribute, which is the number of buffer storage. This paper will provide an analysis based on a previous case study, hence process time and workflow refer to the journal name “Optimising and simulating the assembly line balancing problem in a motorcycle manufacturing company: a case study” [2]. The implementation of the pull system mechanism is to produce a system improvement in terms of the number of Work-In-Process (WIP), total time of products in the system, and the number of finished product inventory, while retaining the same throughput.
Advances in polymer processing
Publisher: Woodhead Publishing Limited
Date: 2009
Wayfinding: A simple concept, a complex process
Publisher: Informa UK Limited
Date: 11-2012
Industrial application of surface area calculating system (SACS) in non-axisymmetric deep drawing process
Publisher: Elsevier BV
Date: 05-2005
Advancements in pulse gas metal arc welding
Publisher: Elsevier BV
Date: 05-2005
Managing product quality and reliability under new challenges
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.335-336.1520
Abstract: Abstract: This paper presents the findings of an investigation of the challenges Australian manufacturers are currently facing. A comprehensive questionnaire survey was conducted among leading Australian manufacturers. This paper reports the main findings of this study. Evidence indicates that product quality and reliability (Q & R) are the main challenges for Australian manufacturers. Design capability and time to market came second. Results show that there is no effective information exchange between the parties involved in production and quality control. Learning from the past mistakes is not proving to have significant effects on improving product quality. The technological innovation speed is high and companies are introducing as many as 5 new products in a year. This technological speed has pressure on the Q & R of new products. To overcome the new challenges, companies need a Q & R improvement model.
Development and Modification of a Cassegrainian Solar Concentrator for Utilization of Solar Thermal Power
Publisher: ASMEDC
Date: 2003
Abstract: Almost all life on Earth has been using solar energy in many ways, but when high temperatures are desired, concentration of the incident solar radiation (insolation) becomes necessary. The present work is an attempt to improve and experimentally compare alternative beam delivering and focusing energy systems of a small solar concentrator. The researched solar energy concentrator (SEC) facility consists of modified two mirror Cassegrainian solar concentrator, two-speed sun-tracking manual and automatic control, concentrated insolation transmitting and continuous beam focusing systems. A number of system modifications during the development of the two stage, point focusing type solar concentrator arrangement for solar thermal power utilization have also been explored and are reported in this paper. Some of the experimental testing results obtained using single polymer fiber 14 mm in diameter, a truncated conical concentrator, and auxiliary lens system alternatives, have been compared. In addition, some details about various improvements of the sun-tracking sensor and automatics, beam transmission and continuous focusing capabilities of the SEC facility have been described.
Development of rapid tooling for sheet metal drawing using nickel electroforming and stereolithography processes
Publisher: Elsevier BV
Date: 04-2001
Influence of pre-exsiting surface defects on the vibrational properties of Ag nanowires
Publisher: IEEE
Date: 08-2012
The Explicit Hazard Model- part 2: Applications
Publisher: IEEE
Date: 2010
Simulation of Bacterial Motion Under Flow Inside Micro Channel Using CFD and DPM
Publisher: Springer International Publishing
Date: 2022
Differences in Carotid Artery Geometry and Flow Caused by Body Postural Changes and Physical Exercise
Publisher: Elsevier BV
Date: 03-2023
Fluid Flow Induces Differential Detachment of Live and Dead Bacterial Cells from Nanostructured Surfaces
Publisher: American Chemical Society (ACS)
Date: 28-06-2022
Modelling passengers flow at airport terminals - Individual agent decision model for stochastic passenger behaviour
Publisher: SciTePress - Science and and Technology Publications
Date: 2012
Mechanical peeling of pumpkins. Part 1: Using an abrasive-cutter brush
Publisher: Elsevier BV
Date: 12-2008
An Extensible Product Structure Model for Product Lifecycle Management in the Make-to-Order Environment
Publisher: SAGE Publications
Date: 12-2008
Abstract: This article presents a product structure model for developing product lifecycle management systems that is flexible for make-to-order environment. In the make-to-order business context, each product could have a number of variants with slightly different constitutions to fulfill different customer requirements. All the variants of a family have common characteristics and each variant has its specific features. A master-variant pattern is proposed for building the product structure model to explicitly represent common characteristics and specific features of in idual variants. The model is capable of enforcing the consistency of a family structure and its variant structure, supporting multiple product views, and facilitating the business processes. A prototype as a proof-of-concept system is presented to illustrate the capability of the proposed extensible product structure model.
The development of a modular design workflow for 3D printable bioresorbable patient-specific bone scaffolds to facilitate clinical translation
Publisher: Informa UK Limited
Date: 05-09-2023
Study of fractional softening in multi-stage hot deformation
Publisher: Elsevier BV
Date: 05-1998
Plaque Longitudinal Heterogeneity in Morphology, Property, and Mechanobiology
Publisher: S. Karger AG
Date: 2021
DOI: 10.1159/000515690
Abstract: b i Background and Purpose: /i /b The hemodynamic environment of an atherosclerotic plaque varies along the longitudinal direction. Investigating the changes in plaque morphology and its biomechanical environment along the longitudinal direction and their correlations will enhance our understanding of plaque progression and arterial remodeling. b i Methods: /i /b Six male patients with carotid stenosis & #x3e % were recruited. Multisequence high-resolution MRI was performed at the carotid bifurcation. Carotid endarterectomy was performed following MRI, and the plaque tissue was collected for histological and mechanical testing. Patient-specific biomechanical modeling and simulations were conducted to calculate the mechanical stresses (wall shear stress [WSS] and von Mises stress [VMS]). Changes in plaque cross-sectional morphology, WSS, and VMS as well as their correlations were evaluated. b i Results: /i /b Positive correlations were found between % stenosis and % inflammation (MA) ( i /i = 0.019), % lipid area and % MA ( i /i = 0.026), and % calcification area and VMS ( i /i = 0.007). Negative correlations were found between VMS and % stenosis ( i /i = 0.028) and VMS and average WSS ( i /i = 0.034). Moreover, the peak stresses and neovessels were found to be in the shoulder regions. High-stress concentrations were found in the interface regions of the calcification and surrounding tissue, thereby increasing plaque vulnerability. b i Conclusions: /i /b Correlations between the morphology and stresses suggest that arterial remodeling is a dynamic interaction between mechanical environment and plaque progression resulting in plaque heterogeneity. Our finding indicates that plaque heterogeneity is associated with plaque progression and can be combined with mechanical stresses for identifying high-risk plaques.
Nanospikes on Customized 3D‐Printed Titanium Implant Surface Inhibits Bacterial Colonization
Publisher: Wiley
Date: 18-01-2023
Abstract: Additive manufacturing has opened the door to patient‐tailored orthopedic implants, which can significantly minimize implant failures associated with prosthesis‐to‐bone mismatch. Success of an implant also depends on the choice of implant materials, effective osseointegration, implant quality, and the mechanical properties together with its capability to limit infection due to bacterial contamination. Herein, nanospikes are created on 3D‐printed titanium‐alloyed implant surfaces, which can kill bacteria to minimize any implant‐associated infections. For the first time, orthopedic implants with a fracture to the proximal phalanx are fabricated using selective laser melting (SLM) followed by a heat‐treatment step and the hydrothermal process. It is showed in the results that by optimizing SLM parameters, dimensionally consistent parts can be produced and tensile properties of the 3D‐printed implants can be significantly improved via a simple cyclic heat‐treatment process compared to the traditionally manufactured implants. Nanospikes similar to those present on dragonfly wings fabricated on 3D‐printed implants surface are able to kill above 90% of adhering bacteria by rupturing the membranes upon contact. These results indicate that fabrication of patient‐specific 3D‐printed implants with inherent bactericidal properties has the potential to eliminate postsurgical infections and possible implant failures.
Mechanical peeling of pumpkins. Part 2: Modeling of peeling process
Publisher: Elsevier BV
Date: 12-2008
Joining of engineering thermoplastics by concentrated beam insolation—a feasibility study
Publisher: Elsevier BV
Date: 07-2003
Including airport duty-free shopping in arriving passenger simulation and the opportunities this presents
Publisher: IEEE
Date: 12-2011
Assessing Biophilic Design Elements for ecosystem service attributes – A sub-tropical Australian case
Publisher: Elsevier BV
Date: 10-2019
Is there a bone-nail specific entry point? Automated fit quantification of tibial nail designs during the insertion for six different nail entry points
Publisher: Elsevier BV
Date: 04-2015
DOI: 10.1016/J.MEDENGPHY.2015.01.012
Abstract: Intramedullary nailing is the standard fixation method for displaced diaphyseal fractures of tibia. Selection of the correct nail insertion point is important for axial alignment of bone fragments and to avoid iatrogenic fractures. However, the standard entry point (SEP) may not always optimise the bone-nail fit due to geometric variations of bones. This study aimed to investigate the optimal entry for a given bone-nail pair using the fit quantification software tool previously developed by the authors. The misfit was quantified for 20 bones with two nail designs (ETN and ETN-Proximal Bend) related to the SEP and 5 entry points which were 5 mm and 10 mm away from the SEP. The SEP was the optimal entry point for 50% of the bones used. For the remaining bones, the optimal entry point was located 5 mm away from the SEP, which improved the overall fit by 40% on average. However, entry points 10 mm away from the SEP doubled the misfit. The optimised bone-nail fit can be achieved through the SEP and within the range of a 5 mm radius, except posteriorly. The study results suggest that the optimal entry point should be selected by considering the fit during insertion and not only at the final position.
Impact of Passenger Group Dynamics on an Airport Evacuation Process Using an Agent-Based Model
Publisher: IEEE
Date: 03-2014
Bactericidal Efficacy of Nanostructured Surfaces Increases under Flow Conditions
Publisher: American Chemical Society (ACS)
Date: 04-11-2022
A tool to minimize the need of Monte Carlo ray tracing code for 3D finite volume modelling of a standard parabolic trough collector receiver under a realistic solar flux profile
Publisher: Wiley
Date: 27-06-2020
DOI: 10.1002/ESE3.741
Development of empirical equations for irradiance profile of a standard parabolic trough collector using Monte Carlo ray tracing technique
Publisher: Trans Tech Publications, Ltd.
Date: 12-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.860-863.180
Abstract: This article explains a technique in which equations are developed to produce the irradiance profile around the receiver of LS2 collector using a vigorouslyverified MCRT model. A large range of test conditions including daily normal insolation, selective coatings and glass envelop conditions were chosen from the published data by Dudley et al. [1] for the job. The R 2 value is excellent that varies between 0.9857 and 0.9999. Therefore, these equations can be used confidently to produce boundary heat flux profile of the collector at normal incident for conjugate heat transfer analyses of the receiver.
Trends in Bactericidal Nanostructured Surfaces: An Analytical Perspective
Publisher: American Chemical Society (ACS)
Date: 04-10-2021
Abstract: Since the discovery of the bactericidal properties of cicada wing surfaces, there has been a surge in the number of studies involving antibacterial nanostructured surfaces (NSS). Studies show that there are many parameters (and thus, thousands of parameter combinations) that influence the bactericidal efficiency (BE) of these surfaces. Researchers attempted to correlate these parameters to BE but have so far been unsuccessful. This paper presents a meta-analysis and perspective on bactericidal NSS, aiming to identify trends and gaps in the literature and to provide insights for future research. We have attempted to synthesize data from a wide range of published studies and establish trends in the literature on bactericidal NSS. Numerous research gaps and findings based on correlations of various parameters are presented here, which will assist in the design of efficient bactericidal NSS and shape future research. Traditionally, it is accepted that BE of NSS depends on the bacterial Gram-stain type. However, this review found that factors beyond Gram-stain type are also influential. Furthermore, it is found that despite their higher BE, hydrophobic NSS are less commonly studied for their bactericidal effect. Interestingly, the impacts of surface hydrophobicity and roughness on the bactericidal effect were found to be influenced by a Gram-stain type of the tested bacteria. In addition, cell motility and shape influence BE, but research attention into these factors is lacking. It was found that hydrophobic NSS demonstrate more promising results than their hydrophilic counterparts however, these surfaces have been overlooked. Confirming the common belief of the influence of nanofeature diameter on bactericidal property, this analysis shows the feature aspect ratio is also decisive. NSS fabricated on silicon substrates perform better than their titanium counterparts, and the success of these silicon structures maybe attributed to the fabrication processes. These insights benefit engineers and scientists alike in developing next-generation NSS.
Drop transfer mode prediction in pulse GMAW of aluminum using statistical model
Publisher: Elsevier BV
Date: 05-2008
Recent Developments in the Field of Nanotechnology for Development of Medical Implants
Publisher: Elsevier BV
Date: 2019
Vertical Segregation: Issues and Challenges of Women Engineers in Australia
Publisher: Elsevier BV
Date: 2019
Parametric Study on Nanopattern Bactericidal Activity
Publisher: Elsevier BV
Date: 2019
A CASE STUDY OF THE IRANIAN NATIONAL RAILWAY AND ITS ABSOLUTE CAPACITY EXPANSION USING ANALYTICAL MODELS
Publisher: Vilnius Gediminas Technical University
Date: 11-10-2015
DOI: 10.3846/16484142.2015.1099053
Abstract: Identifying railway capacity is an important task that can identify ‘in principal’ whether the network can handle an intended traffic flow, and whether there is any free capacity left for additional train services. Capacity determination techniques can also be used to identify how best to improve an existing network, and at least cost. In this article, an optimization approach has been applied to a case study of the Iran national railway, in order to identify its current capacity and to optimally expand it given a variety of technical conditions. This railway is very important in Iran and will be upgraded extensively in the coming years. Hence, the conclusions in this article may help in that endeavor. A sensitivity analysis is recommended to evaluate a wider range of possible scenarios. Hence, more useful lower and upper bounds can be provided for the performance of the system.
A sliding algorithm for optimal nesting of arbitrarily shaped sheet metal blanks
Publisher: Informa UK Limited
Date: 06-1995
INVESTIGATING EFFECTIVE WAYFINDING IN AIRPORTS: A BAYESIAN NETWORK APPROACH
Publisher: Vilnius Gediminas Technical University
Date: 25-03-2014
DOI: 10.3846/16484142.2014.898695
Abstract: Effective wayfinding is the successful interplay of human and environmental factors resulting in a person successfully moving from their current position to a desired location in a timely manner. To date this process has not been modelled to reflect this interplay. This paper proposes a complex modelling system approach of wayfinding by using Bayesian Networks to model this process, and applies the model to airports. The model suggests that human factors have a greater impact on effective wayfinding in airports than environmental factors. The greatest influences on human factors are found to be the level of spatial anxiety experienced by travellers and their cognitive and spatial skills. The model also predicted that the navigation pathway that a traveller must traverse has a larger impact on the effectiveness of an airport’s environment in promoting effective wayfinding than the terminal design.
TiO2 Nanostructures That Reduce the Infectivity of Human Respiratory Viruses Including SARS-CoV-2
Publisher: American Chemical Society (ACS)
Date: 06-06-2022
An Analytical Optimisation Framework for Airport Terminal Capacity Expansion
Publisher: Hindawi Limited
Date: 10-2020
DOI: 10.1155/2020/2976281
Abstract: This article considers how to allocate additional physical resources within airport terminals. An optimization model was developed to determine where additional resources should be placed to minimise passenger waiting times. The objective function is stochastic and can only be evaluated using discrete event simulation. As this model is stochastic and nonlinear, a Simulated Annealing (SA) metaheuristic was implemented and tested. The SA algorithm repeatedly perturbs a resource allocation solution using one of two methods. The first method is creating new solution randomly in each iteration, and the second method is local search that is mimicked by any move of the current solution of x solution chosen randomly in its neighborhood. Numerical testing shows that the random approach is best, and solutions that are 12.11% better can be obtained.
Study of tissue damage during mechanical peeling of tough skinned vegetables
Publisher: No publisher found
Date: 2011
A Framework for Life Cycle Cost Estimation of a Product Family at the Early Stage of Product Development
Publisher: Trans Tech Publications, Ltd.
Date: 12-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.605-607.222
Abstract: A cost estimation method is required to estimate the life cycle cost of a product family at the early stage of product development in order to evaluate the product family design. There are difficulties with existing cost estimation techniques in estimating the life cycle cost for a product family at the early stage of product development. This paper proposes a framework that combines a knowledge based system and an activity based costing techniques in estimating the life cycle cost of a product family at the early stage of product development. The inputs of the framework are the product family structure and its sub function. The output of the framework is the life cycle cost of a product family that consists of all costs at each product family level and the costs of each product life cycle stage. The proposed framework provides a life cycle cost estimation tool for a product family at the early stage of product development using high level information as its input. The framework makes it possible to estimate the life cycle cost of various product family that use any types of product structure. It provides detailed information related to the activity and resource costs of both parts and products that can assist the designer in analyzing the cost of the product family design. In addition, it can reduce the required amount of information and time to construct the cost estimation system.
Transient analysis and techno-economic assessment of thermal energy storage integrated with solar air heater for energy management in drying
Publisher: Elsevier BV
Date: 11-2023
An Activity and Resource Advisory System for Manufacturing Process Chains Selection at the early Stage of Product Development
Publisher: Trans Tech Publications, Ltd.
Date: 10-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.834-836.1927
Abstract: Designers need to consider both the functional and production process requirements at the early stage of product development. A variety of the research works found in the literature has been proposed to assist designers in selecting the most viable manufacturing process chain. However, they do not provide any assistance for designers to evaluate the processes according to the particular circumstances of their company. This paper describes a framework of an Activity and Resource Advisory System (ARAS) that generates advice about the required activities and the possible resources for various manufacturing process chains. The system provides more insight, more flexibility, and a more holistic and suited approach for designers to evaluate and then select the most viable manufacturing process chain at the early stage of product development.
Antibacterial activity of 3D versus 2D TiO2 nanostructured surfaces to investigate curvature and orientation effects
Publisher: Elsevier BV
Date: 09-2022
A User-Centric 3D-Printed Modular Peristaltic Pump for Microfluidic Perfusion Applications
Publisher: MDPI AG
Date: 25-04-2023
DOI: 10.3390/MI14050930
Abstract: Microfluidic organ-on-a-chip (OoC) technology has enabled studies on dynamic physiological conditions as well as being deployed in drug testing applications. A microfluidic pump is an essential component to perform perfusion cell culture in OoC devices. However, it is challenging to have a single pump that can fulfil both the customization function needed to mimic a myriad of physiological flow rates and profiles found in vivo and multiplexing requirements (i.e., low cost, small footprint) for drug testing operations. The advent of 3D printing technology and open-source programmable electronic controllers presents an opportunity to democratize the fabrication of mini-peristaltic pumps suitable for microfluidic applications at a fraction of the cost of commercial microfluidic pumps. However, existing 3D-printed peristaltic pumps have mainly focused on demonstrating the feasibility of using 3D printing to fabricate the structural components of the pump and neglected user experience and customization capability. Here, we present a user-centric programmable 3D-printed mini-peristaltic pump with a compact design and low manufacturing cost (~USD 175) suitable for perfusion OoC culture applications. The pump consists of a user-friendly, wired electronic module that controls the operation of a peristaltic pump module. The peristaltic pump module comprises an air-sealed stepper motor connected to a 3D-printed peristaltic assembly, which can withstand the high-humidity environment of a cell culture incubator. We demonstrated that this pump allows users to either program the electronic module or use different-sized tubing to deliver a wide range of flow rates and flow profiles. The pump also has multiplexing capability as it can accommodate multiple tubing. The performance and user-friendliness of this low-cost, compact pump can be easily deployed for various OoC applications.
Modeling of an Integrated Process Planning System
Publisher: CAD Solutions, LLC
Date: 2006
Sandwiched carbon nanotube film as strain sensor
Publisher: Elsevier BV
Date: 09-2012
Characteristics of alternate supply of shielding gases in aluminum GMA welding
Publisher: Elsevier BV
Date: 06-2009
The effect of alternate supply of shielding gases in austenite stainless steel GTA welding
Publisher: Elsevier BV
Date: 06-2009
Support services for higher degree research students: A survey of three Australian universities
Publisher: Informa UK Limited
Date: 26-10-2016
Neural network approach to flow stress evaluation in hot deformation
Publisher: Elsevier BV
Date: 09-1995
A set of heuristic algorithms for optimal nesting of two-dimensional irregularly shaped sheet-metal blanks
Publisher: Elsevier BV
Date: 05-1994
A study on the quality improvement of robotic GMA welding process
Publisher: Elsevier BV
Date: 12-2003
An investigation into welding of engineering thermoplastics using focused microwave energy
Publisher: Elsevier BV
Date: 02-1998
Check-in processing : simulation of passengers with advanced traits
Publisher: IEEE
Date: 12-2011
Characterisation of materials behaviour in microwave joining of ceramics
Publisher: Elsevier BV
Date: 12-1998
A flexible job shop scheduling approach with operators for coal export terminals
Publisher: Elsevier BV
Date: 04-2019
Mechanics of Bacterial Interaction and Death on Nanopatterned Surfaces
Publisher: Elsevier BV
Date: 2021
A constitutive model for mechanical response characterization of pumpkin peel and flesh tissues under tensile and compressive loadings
Publisher: Springer Science and Business Media LLC
Date: 04-11-2014
Women in Engineering: Myths, Measures and Policies
Publisher: Springer International Publishing
Date: 2022
Fabrication and Applications of Antibacterial Surfaces and Nano Biosensing Platforms
Publisher: Springer International Publishing
Date: 2022
How to increase the accuracy of analysis and reduce the computational time in ANSYS in the case of deformation study of orthopedic bone plates
Publisher: Trans Tech Publications, Ltd.
Date: 10-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.834-836.1592
Abstract: Currently, finite element analyses are usually done by means of commercial software tools. Accuracy of analysis and computational time are two important factors in efficiency of these tools. This paper studies the effective parameters in computational time and accuracy of finite element analyses performed by ANSYS and provides the guidelines for the users of this software whenever they us this software for study on deformation of orthopedic bone plates or study on similar cases. It is not a fundamental scientific study and only shares the findings of the authors about structural analysis by means of ANSYS workbench. It gives an idea to the readers about improving the performance of the software and avoiding the traps. The solutions provided in this paper are not the only possible solutions of the problems and in similar cases there are other solutions which are not given in this paper. The parameters of solution method, material model, geometric model, mesh configuration, number of the analysis steps, program controlled parameters and computer settings are discussed through thoroughly in this paper.
Computer Aided Process Planning for Non-Axisymmetric Deep Drawing Products
Publisher: AIP
Date: 2004
DOI: 10.1063/1.1766825
The Significance of Coordinated Research Against SARS-CoV-2
Publisher: Springer International Publishing
Date: 2022
Bacterial adherence and biofilm formation on medical implants: A review
Publisher: SAGE Publications
Date: 10-2014
Abstract: Biofilms are a complex group of microbial cells that adhere to the exopolysaccharide matrix present on the surface of medical devices. Biofilm-associated infections in the medical devices pose a serious problem to the public health and adversely affect the function of the device. Medical implants used in oral and orthopedic surgery are fabricated using alloys such as stainless steel and titanium. The biological behavior, such as osseointegration and its antibacterial activity, essentially depends on both the chemical composition and the morphology of the surface of the device. Surface treatment of medical implants by various physical and chemical techniques are attempted in order to improve their surface properties so as to facilitate bio-integration and prevent bacterial adhesion. The potential source of infection of the surrounding tissue and antimicrobial strategies are from bacteria adherent to or in a biofilm on the implant which should prevent both biofilm formation and tissue colonization. This article provides an overview of bacterial biofilm formation and methods adopted for the inhibition of bacterial adhesion on medical implants
A Review of Satisfaction Theories and Implications for STEM Teaching
Publisher: Springer International Publishing
Date: 2022
Thermoplastic joining using solar energy concentrator
Publisher: Elsevier BV
Date: 09-1997
Inorganic p-type semiconductors and carbon materials based hole transport materials for perovskite solar cells
Publisher: Elsevier BV
Date: 08-2018
Progress in Nanostructured Mechano-Bactericidal Polymeric Surfaces for Biomedical Applications
Publisher: MDPI AG
Date: 20-10-2023
DOI: 10.3390/NANO13202799
Physical mechanism of the compressive response of F-actin networks: significance of crosslinker unbinding events
Publisher: Elsevier BV
Date: 2014
DOI: 10.1063/2.1405106
Multiview gait biometrics for human identity recognition
Publisher: IEEE
Date: 03-2014
Assembly line balancing the comparison of COMSOAL and MSNSH technique in Motorcycle manufacturing company
Publisher: Trans Tech Publications, Ltd.
Date: 12-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.605-607.166
Abstract: Today’s highly competitive market influences the manufacturing industry to improve their production systems to become the optimal system in the shortest cycle time as possible. One of most common problems in manufacturing systems is the assembly line balancing problem. The assembly line balancing problem involves task assignments to workstations with optimum line efficiency The most common purposes of Computer Method for Sequencing Operations for Assembly Line (COMSOAL) are to minimise idle time, optimise production line efficiency, and minimise the number of workstations. Therefore, this paper leads to implement COMSOAL to balance an assembly line in the motorcycle industry. The new solution by COMSOAL will be used to compare with the previous solution that was developed by Multi‐Started Neighborhood Search Heuristic (MSNSH), which will result in five aspects including cycle time, total idle time, line efficiency, average daily productivity rate, and the workload balance. The journal name “Optimising and simulating the assembly line balancing problem in a motorcycle manufacturing company: a case study” will be used as the case study for this project.
Experimental and thermodynamic analysis of solar air dryer equipped with V-groove double pass collector: techno-economic and exergetic measures
Publisher: Elsevier BV
Date: 12-2022
Ethanol Sensitivity of Thermally Evaporated Nanostructured WO<sub>3</sub> Thin Films Doped and Implanted with Fe
Publisher: Trans Tech Publications, Ltd.
Date: 07-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.333-335.1938
Abstract: Ethanol sensing performance of gas sensors made of Fe doped and Fe implanted nanostructured WO 3 thin films prepared by a thermal evaporation technique was investigated. Three different types of nanostructured thin films, namely, pure WO 3 thin films, iron-doped WO 3 thin films by co-evaporation and Fe-implanted WO 3 thin films have been synthesized. All the thin films have a film thickness of 300 nm. The physical, chemical and electronic properties of these films have been optimized by annealing heat treatment at 300oC and 400oC for 2 hours in air. Various analytical techniques were employed to characterize these films. Atomic Force Microscopy and Transmission Electron Microscopy revealed a very small grain size of the order 5-10 nm in as-deposited WO 3 films, and annealing at 300oC or 400oC did not result in any significant change in grain size. This study has demonstrated enhanced sensing properties of WO 3 thin film sensors towards ethanol at lower operating temperature, which was achieved by optimizing the physical, chemical and electronic properties of the WO 3 film through Fe doping and annealing.
Enhanced biomechanical performance of additively manufactured Ti-6Al-4V bone plates
Publisher: Elsevier BV
Date: 07-2021
Temperature dependent electrical resistivity in expoxy - multiwall carbon nanotube nanocomposites
Publisher: Springer London
Date: 2011
Evaluation of particle beam lithography for fabrication of metallic nano-structures
Publisher: Elsevier BV
Date: 2019
Bending properties of Ag nanowires with pre-existing surface defects
Publisher: Elsevier BV
Date: 2014
An Overview of Hospital Capacity Planning and Optimisation
Publisher: MDPI AG
Date: 29-04-2022
DOI: 10.3390/HEALTHCARE10050826
Abstract: Health care is uncertain, dynamic, and fast growing. With digital technologies set to revolutionise the industry, hospital capacity optimisation and planning have never been more relevant. The purposes of this article are threefold. The first is to identify the current state of the art, to summarise/analyse the key achievements, and to identify gaps in the body of research. The second is to synthesise and evaluate that literature to create a holistic framework for understanding hospital capacity planning and optimisation, in terms of physical elements, process, and governance. Third, avenues for future research are sought to inform researchers and practitioners where they should best concentrate their efforts. In conclusion, we find that prior research has typically focussed on in idual parts, but the hospital is one body that is made up of many interdependent parts. It is also evident that past attempts considering entire hospitals fail to incorporate all the detail that is necessary to provide solutions that can be implemented in the real world, across strategic, tactical and operational planning horizons. A holistic approach is needed that includes ancillary services, equipment medicines, utilities, instrument trays, supply chain and inventory considerations.
Estimating life cycle cost for a product family design: The challenges
Publisher: IOP Publishing
Date: 11-2017
Time-dependent fractional advection-diffusion equations by an implicit MLS meshless method
Publisher: Wiley
Date: 10-05-2011
DOI: 10.1002/NME.3223
Studies on bending limitations for the optimal fit of orthopaedic bone plates
Publisher: Trans Tech Publications, Ltd.
Date: 12-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.602-604.1181
Abstract: Distal tibial fractures are now commonly treated via intermedullary plate fixation due to higher rates of union and lower rates of postoperative complications. However, patient specific bone morphology demands manual deformation of the plate to ensure appropriate fit along the bone contours, and depending on the material of the plate, different outcomes have been reported along with postoperative complications. A comparative analysis of Stainless Steel 316L and Ti-6Al-4V alloys was carried to estimate the safe bending limit for appropriate fits. The results from the ANSYS FEA simulations were validated with experiments based on ASTM F382-99. It is found that SS316L is better suited for large deformations (up to 16˚ in proximal tip and 7.5˚ in distal end) and Ti for smaller deformation contours (up to 3˚ in proximal tip and 1.8˚ in distal end). The results of this study have profound implications for the choice of plates based on preliminary radiographical fracture examinations to ensure better fixation and higher rates of union of distal tibial fractures.
Microscale study of electrical characteristics of epoxy-multiwall carbon nanotube nanocomposites
Publisher: IEEE
Date: 02-2011
Single-parameter mechanical design of a 3D-printed octet truss topological scaffold to match natural cancellous bones
Publisher: Elsevier BV
Date: 11-2021
A systematic approach towards biomimicry of nanopatterned cicada wings on titanium using electron beam lithography
Publisher: IOP Publishing
Date: 19-11-2020
Abstract: The interaction of bacteria on nanopatterned surfaces has caught attention since the discovery of the bactericidal property of cicada wing surfaces. While many studies focused on the inspiration of such surfaces, nanolithography-based techniques are seldom used due to the difficulties in fabricating highly dense (number of pillars per unit area), geometrical nanostructured surfaces. Here we present a systematic modelling approach for optimising the electron beam lithography parameters in order to fabricate biomimicked nanopillars of varying patterned geometries. Monte Carlo simulation was applied to optimize the beam energy and pattern design prior to the experimental study. We optimized the processing parameters such as exposure factor, write field size, pitch, the different types and thicknesses of the PMMA resist used, and the shape of the feature (circle or a dot) for the fabrication of nanopillars to achieve the best lift-off with repeatable result. Our simulation and experimental results showed that a circle design with a voltage of 30 kV and 602 nm thickness of PMMA 495 A4 as base layers and 65 nm of PMMA 950 A2 as top layer achieves the best results. The antibacterial activity was also validated on the representative fabricated titanium nanopillar surface. The surface with a base diameter of 94.4 nm, spike diameter of 12.6 nm, height of 115.6 nm, density of 43/ μ m 2 , aspect ratio of 2.16 and centre to centre distance of 165.8 nm was the optimum surface for antibacterial activity. Such a systematic design approach for fabrication of insect wing-mimicked closely packed nanopillars have not been investigated before which provides an excellent platform for biomedical Ti implants.
Measurement studies on superhydrophobic materials
Publisher: Trans Tech Publications, Ltd.
Date: 07-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.988.134
Abstract: Superhydrophobicity is directly related to the wettability of the surfaces. Cassie-Baxter state relating to geometrical configuration of solid surfaces is vital to achieving the Superhydrophobicity and to achieve Cassie-Baxter state the following two criteria need to be met: 1) Contact line forces overcome body forces of unsupported droplet weight and 2) The microstructures are tall enough to prevent the liquid that bridges microstructures from touching the base of the microstructures [1]. In this paper we discuss different measurements used to characterise/determine the superhydrophobic surfaces.Keywords: Wettability, contact angle, contact angle hysteresis, contact time, surface roughness, drag reduction measurements, morphology, surface friction, Reynolds number
Fusion of Hand Based Biometrics Using Particle Swarm Optimization
Publisher: IEEE
Date: 04-2008
Assessment of thermal and environmental benchmarking of a solar dryer as a pilot zero-emission drying technology
Publisher: Elsevier BV
Date: 08-2023
Finite Element Modelling of a Gram-Negative Bacterial Cell and Nanospike Array for Cell Rupture Mechanism Study
Publisher: MDPI AG
Date: 26-02-2023
DOI: 10.3390/MOLECULES28052184
Abstract: Inspired by nature, it is envisaged that a nanorough surface exhibits bactericidal properties by rupturing bacterial cells. In order to study the interaction mechanism between the cell membrane of a bacteria and a nanospike at the contact point, a finite element model was developed using the ABAQUS software package. The model, which saw a quarter of a gram-negative bacteria (Escherichia coli) cell membrane adhered to a 3 × 6 array of nanospikes, was validated by the published results, which show a reasonably good agreement with the model. The stress and strain development in the cell membrane was modeled and were observed to be spatially linear and temporally nonlinear. From the study, it was observed that the bacterial cell wall was deformed around the location of the nanospike tips as full contact was generated. Around the contact point, the principal stress reached above the critical stress leading to a creep deformation that is expected to cause cell rupture by penetrating the nanospike, and the mechanism is envisaged to be somewhat similar to that of a paper punching machine. The obtained results in this project can provide an insight on how bacterial cells of a specific species are deformed when they adhere to nanospikes, and how it is ruptured using this mechanism.
Comprehensive Contribution of Filament Thickness and Crosslinker Failure to the Rheological Property of F-actin Cytoskeleton
Publisher: Springer Science and Business Media LLC
Date: 03-03-2015
The Hollow Porous Sphere Cell Carrier for the Dynamic Three-Dimensional Cell Culture
Publisher: Mary Ann Liebert Inc
Date: 11-2022
Orthopedic bone plates: Evolution in structure implementation technique and biomaterial
Publisher: Global Science and Technology Forum
Date: 06-2012
A coupled meshless technique/molecular dynamics approach for deformation characterization of mono-crystalline metal
Publisher: AIP
Date: 2010
DOI: 10.1063/1.3452195
Prediction of welding parameters for pipeline welding using an intelligent system
Publisher: Springer Science and Business Media LLC
Date: 11-2003
Editorial
Publisher: Informa UK Limited
Date: 17-12-2018
A Novel Iterative Method for Simulating Patient-Specific Optimal Deformation and Fit of Fracture Fixation Plates
Publisher: Trans Tech Publications, Ltd.
Date: 12-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.845.382
Abstract: This paper proposes a new iterative method to achieve an optimally fitting plate for pre-operative planning purposes. The proposed method involves integration of four commercially available software tools, Matlab, Rapidform2006, SolidWorks and ANSYS, each performing specific tasks to obtain a plate shape that fits optimally for an in idual tibia and is mechanically safe. A typical challenge when crossing multiple platforms is to ensure correct data transfer. We present an ex le of the implementation of the proposed method to demonstrate successful data transfer between the four platforms and the feasibility of the method.
Special issue on the application of artificial intelligence in advanced manufacturing
Publisher: Informa UK Limited
Date: 11-2020
Agent-based Modelling of Aircraft Boarding Methods
Publisher: SCITEPRESS - Science and Technology Publications
Date: 2014
Numerical investigation of atherosclerotic plaque rupture using optical coherence tomography imaging and XFEM
Publisher: Elsevier BV
Date: 12-2018
Effects of punch load for elliptical deep drawing product of automotive parts
Publisher: Springer Science and Business Media LLC
Date: 14-11-2006
A method of three-dimensional thermo-fluid simulation of the receiver of a standard parabolic trough collector
Publisher: Springer Singapore
Date: 04-10-2018
The efficacy of utility functions for multicriteria hospital case‐mix planning
Publisher: Wiley
Date: 23-09-2023
DOI: 10.1111/ITOR.13372
Fabrication of nano pyramid texture on Ti-6Al-4V using nanosphere lithography
Publisher: Elsevier BV
Date: 2018
Quantitative Fit Assessment of a Precontoured Fracture Fixation Plate: Its Automation and an Investigation on the Borderline Cases
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.339.685
Abstract: Virtual methods to assess the fitting of a fracture fixation plate were proposed recently, however with limitations such as simplified fit criteria or manual data processing. This study aims to automate a fit analysis procedure using clinical-based criteria, and then to analyse the results further for borderline fit cases. Three dimensional (3D) models of 45 bones and of a precontoured distal tibial plate were utilized to assess the fitting of the plate automatically. A Matlab program was developed to automatically measure the shortest distance between the bone and the plate at three regions of interest and a plate-bone angle. The measured values including the fit assessment results were recorded in a spreadsheet as part of the batch-process routine. An automated fit analysis procedure will enable the processing of larger bone datasets in a significantly shorter time, which will provide more representative data of the target population for plate shape design and validation. As a result, better fitting plates can be manufactured and made available to surgeons, thereby reducing the risk and cost associated with complications or corrective procedures. This in turn, is expected to translate into improving patients' quality of life.
CFD study of heat transfer enhancement and fluid flow characteristics of turbulent flow through tube with twisted tape inserts
Publisher: Elsevier BV
Date: 02-2019
Numerical exploration of the defect's effect on mechanical properties of nanowires under torsion
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.335-336.498
Abstract: Molecular dynamics (MD) simulations have been carried out to investigate the defect’s effect on the mechanical properties of single-crystal copper nanowire with different surface defects, under torsion deformation. The torsional rigidity is found insensitive to the surface defects and the critical angle appears an obvious decrease due to the surface defects, the largest decrease is found for the nanowire with surface horizon defect. The deformation mechanism appears different degrees of influence due to surface defects. The surface defects play a role of dislocation sources. Comparing with single intrinsic stacking faults formation for the perfect nanowire, much affluent deformation processes have been activated because of surface defects, for instance, we find the twins formation for the nanowire with a surface 45 o defect.
Multi-biofunctional properties of three species of cicada wings and biomimetic fabrication of nanopatterned titanium pillars
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8TB03295E
Abstract: Inspired by the surface topography of cicada wings, Ti nanopillars were fabricated. The fabricated surfaces were bactericidal and cytocompatible.
A multi-criteria multi-commodity flow model for analysing transportation networks
Publisher: Elsevier BV
Date: 2020
A method for optimal fit of patient-specific fracture fixation plates
Publisher: SAGE Publications
Date: 16-07-2015
Abstract: Anatomically pre-contoured fracture fixation plates are a treatment option for bone fractures. A well-fitting plate can be used as a tool for anatomical reduction of the fractured bone. However, recent studies showed that some plates fit poorly for many patients due to considerable shape variations between bones of the same anatomical site. Therefore, the plates have to be manually fitted and deformed by surgeons to fit each patient optimally. The process is time-intensive and labor-intensive, and could lead to adverse clinical implications such as wound infection or plate failure. This paper proposes a new iterative method to simulate the patient-specific deformation of an optimally fitting plate for pre-operative planning purposes. We further demonstrate the validation of the method through a case study. The proposed method involves the integration of four commercially available software tools, Matlab, Rapidform2006, SolidWorks, and ANSYS, each performing specific tasks to obtain a plate shape that fits optimally for an in idual tibia and is mechanically safe. A typical challenge when crossing multiple platforms is to ensure correct data transfer. We present an ex le of the implementation of the proposed method to demonstrate successful data transfer between the four platforms and the feasibility of the method.
Manufacturing of a parabolic trough concentrating collector test rig and a 'LASER-Screen' technique for measuring actual focal length and light interceptance of the collector
Publisher: Elsevier BV
Date: 2019
Investigation of failure mechanisms of nacre at macro and nano scales
Publisher: Elsevier BV
Date: 12-2020
Mimicking Insect Wings: The Roadmap to Bioinspiration
Publisher: American Chemical Society (ACS)
Date: 22-05-2019
Analysis of Passenger Group Behaviour and Its Impact on Passenger Flow using an Agent-based Model
Publisher: SCITEPRESS - Science and Technology Publications
Date: 2014
Sensitivity analysis for process parameters in GMA welding process using a factorial design method
Publisher: No publisher found
Date: 2003
Model-based fault diagnosis and prognosis of dynamic systems: a review
Publisher: Elsevier BV
Date: 2019
Statistical analysis on accuracy of wax patterns used in investment casting process
Publisher: Elsevier BV
Date: 07-2003
Finite Element modeling of Mechanical Loading-Pumpkin Peel and flesh
Publisher: Walter de Gruyter GmbH
Date: 07-04-2017
Abstract: Finite element (FE) models of uniaxial loading of pumpkin peel and flesh tissues were developed and validated using experimental results. The tensile model was developed for both linear elastic and plastic material models, the compression model was developed only with the plastic material model. The outcomes of force versus time curves obtained from FE models followed similar pattern to the experimental curves however the curve resulted with linear elastic material properties had a higher difference with the experimental curves. The values of predicted forces were determined and compared with the experimental curve. An error indicator was introduced and computed for each case and compared. Additionally, Root Mean Square Error (RMSE) values were also calculated for each model and compared. The results of modeling were used to develop material model for peel and flesh tissues in FE modeling of mechanical peeling of tough skin vegetables. The results presented in this paper are a part of a study on mechanical properties of agricultural tissues focusing on mechanical peeling methods using mathematical, experimental and computational modeling.
Comparison of multiple regression and back propagation neural network approaches in modelling top bead height of multipass gas metal arc welds
Publisher: Informa UK Limited
Date: 10-2003
Complete and Competent Engineers:A Coaching Model to Developing Holistic Graduates
Publisher: Elsevier BV
Date: 02-2014
A feasibility study into joining of engineering thermoplastics utilising concentrated beam solar radiation
Publisher: Elsevier BV
Date: 11-2000
Prediction of die casting process parameters by using an artificial neural network model for zinc alloys
Publisher: Informa UK Limited
Date: 2000
Numerical Modelling and Optimisation of a Microwave Enhanced Rapid Prototyping
Publisher: Springer Science and Business Media LLC
Date: 06-2001
Stress-Relaxation and Cyclic Behavior of Human Carotid Plaque Tissue
Publisher: Frontiers Media SA
Date: 11-02-2020
Impact of passenger-arrival patterns in outbound processes of airports
Publisher: Elsevier BV
Date: 2019
Investigation of mechanical properties and morphology of hydrothermally manufactured titanium dioxide nanostructured surfaces
Publisher: Elsevier BV
Date: 2019
Mechanical Properties of Melon Measured by Compression, Shear, and Cutting Modes
Publisher: Informa UK Limited
Date: 31-07-2009
Experimental studies on the accuracy of wax patterns used in investment casting
Publisher: SAGE Publications
Date: 02-2003
DOI: 10.1243/095440503321148902
Abstract: Investment casting is often used to produce fully functional prototype components from sacrificial patterns. These patterns (prototypes) may be made using specialized rapid prototyping techniques such as stereolithography or three-dimensional printing. When multiple functional prototypes are required, interim tools for making wax patterns are employed. The objective of this research work was to determine the precision and accuracy of wax patterns produced using several prototype tools. Linear contraction was used to determine the accuracy as a function of the wax injection parameters used in low-pressure injection moulding. Wax patterns were produced using polyurethane and silicone rubber tools. It has been shown that the accuracy of patterns from both tools is similar. However, silicone tools produce patterns with much higher contraction than those produced by polyurethane tools. Unconstrained patterns dimensions contracted as much as 3.44 ± 0.40 per cent and 1.70 ± 0.60 per cent for silicone and polyurethane tools respectively. The constrained dimensions contracted by 2.20 ± 0.20 per cent in the case of silicone tools and 1.40 ± 0.20 per cent in the case of polyurethane tools.
Abrasive peeling of pumpkin
Publisher: Elsevier BV
Date: 03-2007
Related Organisations
University Of Southern Queensland - Springfield Campus
Location: Australia
Indian Institute Of Technology Bombay Department Of Mechanical Engineering
Location: India
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View Funded ActivityA Comprehensive Correlative Cryo Microscopy Laboratory
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View Funded ActivityAn Innovative System For Accurate Bending Of Fracture Fixation Plates In Orthopaedic Surgery
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View Funded ActivityAdvanced Laser Additive Manufacturing System For Extended Applications To Surface Engineering, Direct Manufacturing And New Alloy Development
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View Funded ActivityAntibacterial Impact Assessment Of Nanopillar Surfaces On Titanium Implants
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View Funded ActivityStudies On The Weld Characterstics And Weldability Of Welded Joints With Alternate Supply Of Shileding Gases In Welding
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View Funded ActivityModelling Of Pulse Current Parameters And Design Of Fuzzy Logic Controller For Uniform Metal Transfer In Pulsed Gas Metal Arc Welding Of Aluminium Alloy
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Funder: Australian Research Council
View Funded ActivityA Universal Nano Tribometer For Surface And Thin Film Characterisation
Start Date: 2009
End Date: 2009
Funder: Australian Research Council
View Funded ActivityAn Integrated System For Characterisation Of Mechanical Behaviour Of Bio- And Nanomaterials At Micro And Nano Scales In Queensland
Start Date: 2012
End Date: 2012
Funder: Australian Research Council
View Funded ActivityMonitoring Intuitive Expertise In The Context Of Airport Security Screening
Start Date: 2014
End Date: 2017
Funder: Australian Research Council
View Funded ActivityImproving The Productivity And Efficiency Of Australian Airports
Start Date: 2014
End Date: 2017
Funder: Australian Research Council
View Funded ActivityARC Training Centre In Additive Biomanufacturing
Start Date: 2016
End Date: 2019
Funder: Australian Research Council
View Funded ActivityDevelopment Of Knowledge Based Process Planning System For Non-Symmetrical Sheet Metal Forming Processes
Start Date: 2004
End Date: 2004
Funder: Australian Research Council
View Funded ActivityAdvanced Laser Additive Manufacturing System For Extended Applications To Surface Engineering, Direct Manufacturing And New Alloy Development
Start Date: 2014
End Date: 2014
Funder: Australian Research Council
View Funded ActivityAn Innovative System For Accurate Bending Of Fracture Fixation Plates In Orthopaedic Surgery
Start Date: 2009
End Date: 2012
Funder: Australian Research Council
View Funded ActivityStudies On The Weld Characterstics And Weldability Of Welded Joints With Alternate Supply Of Shileding Gases In Welding
Start Date: 2003
End Date: 2004
Funder: Australian Research Council
View Funded ActivityIntegrated Command And Control Facility For Large-scale Critical Infrastructure Management
Start Date: 2011
End Date: 2011
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0346793
Start Date: 07-2003
End Date: 12-2005
Amount: $74,711.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0451809
Start Date: 04-2004
End Date: 09-2005
Amount: $80,902.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0212065
Start Date: 06-2004
End Date: 12-2004
Amount: $63,191.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0560114
Start Date: 11-2004
End Date: 05-2007
Amount: $105,202.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP140100221
Start Date: 06-2015
End Date: 06-2020
Amount: $420,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0990250
Start Date: 08-2009
End Date: 12-2014
Amount: $152,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP180100542
Start Date: 05-2020
End Date: 12-2023
Amount: $417,440.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0989804
Start Date: 2009
End Date: 12-2009
Amount: $150,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP180101098
Start Date: 06-2018
End Date: 05-2022
Amount: $374,569.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE110100023
Start Date: 2011
End Date: 12-2015
Amount: $500,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP140100282
Start Date: 06-2015
End Date: 09-2018
Amount: $660,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE190100048
Start Date: 2019
End Date: 06-2021
Amount: $540,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC180100008
Start Date: 07-2019
End Date: 06-2025
Amount: $3,981,223.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE140100156
Start Date: 07-2014
End Date: 06-2016
Amount: $250,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC160100026
Start Date: 03-2017
End Date: 09-2021
Amount: $3,722,989.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE120100121
Start Date: 01-2012
End Date: 12-2013
Amount: $270,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0990135
Start Date: 07-2009
End Date: 12-2013
Amount: $2,400,000.00
Funder: Australian Research Council
View Funded Activity