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Articles 631 - 660 of 2936
Full-Text Articles in Social and Behavioral Sciences
A New Approach For Classification And Characterization Of Voltage Dips And Swells Using 3d Polarization Ellipse Parameters, Mollah R. Alam, Kashem M. Muttaqi, Abdesselam Bouzerdoum
A New Approach For Classification And Characterization Of Voltage Dips And Swells Using 3d Polarization Ellipse Parameters, Mollah R. Alam, Kashem M. Muttaqi, Abdesselam Bouzerdoum
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a new method for classification and characterization of voltage dips and swells in electricity networks. The proposed method exploits unique signatures and parameters of three phase voltage signals extracted from the polarization ellipse in three-dimensional (3D) co-ordinates. Five ellipse parameters, which include azimuthal angle, elevation, tilt, semi-minor axis and semi-major axis, are used to classify and characterize voltage dips and swells. Seven types of voltage dips, which include a total of 19 groups of dips incorporating different kinds of balanced (three-phase dips) and unbalanced (single-phase or double-phase) dips, are identified and successfully classified using the 3D polarization …
Application Of The Largest Lyapunov Exponent Algorithm For Feature Extraction In Low Speed Slew Bearing Condition Monitoring, Wahyu Caesarendra, Prabuono Buyung Kosasih, A Kiet Tieu, Craig A. S Moodie
Application Of The Largest Lyapunov Exponent Algorithm For Feature Extraction In Low Speed Slew Bearing Condition Monitoring, Wahyu Caesarendra, Prabuono Buyung Kosasih, A Kiet Tieu, Craig A. S Moodie
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a new application of the largest Lyapunov exponent (LLE) algorithm for feature extraction method in low speed slew bearing condition monitoring. The LLE algorithm is employed to measure the degree of non-linearity of the vibration signal which is not easily monitored by existing methods. The method is able to detect changes in the condition of the bearing and demonstrates better tracking of the progressive deterioration of the bearing during the 139 measurement days than comparable methods such as the time domain feature methods based on root mean square (RMS), skewness and kurtosis extraction from the raw vibration …
Micro Sheet Hydroforming Process Of Ultra-Thin Pure Titanium Foil, Hideki Sato, Kenichi Manabe, Dongbin Wei, Zhengyi Jiang, Daiki Kondo
Micro Sheet Hydroforming Process Of Ultra-Thin Pure Titanium Foil, Hideki Sato, Kenichi Manabe, Dongbin Wei, Zhengyi Jiang, Daiki Kondo
Faculty of Engineering and Information Sciences - Papers: Part A
A micro hydromechanical deep drawing is carried out using the pure titanium and the effect of fluid pressure on formability of pure titanium is investigated. The experiments are performed using the two kinds of pure titanium foils (TR270C-H and TR270C-O) and stainless steel foil (SUS304-H) with 50 thickness and the cylindrical and conical punches. As a result, it is found that the peeling off the oxide film of pure titanium can be reduced by applying the fluid pressure because the friction force and contact pressure between the blank and die decreases. However, the formability is lower for pure titanium than …
Sensitivity Of Collapsed Arc Qa Method For Delivery Errors In Volumetric Modulated Arc Therapy (Vmat), Tony Young, Aitang Xing, Philip J. Vial, David Thwaites, Lois C. Holloway, Sankar Arumugam
Sensitivity Of Collapsed Arc Qa Method For Delivery Errors In Volumetric Modulated Arc Therapy (Vmat), Tony Young, Aitang Xing, Philip J. Vial, David Thwaites, Lois C. Holloway, Sankar Arumugam
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper the sensitivity of an Electronic Portal Imaging Device (EPID) to detecting introduced Volumetric Arc Therapy (VMAT) treatment errors was studied using the Collapsed Arc method. Two clinical Head and Neck (H& N) and Prostate treatment plans had gantry dependent dose and MLC errors introduced to the plans. These plans were then delivered to an Elekta Synergy Linear Accelerator EPID and compared to the original treatment planning system Collapsed Arc dose matrix. With the Collapsed Arc technique the EPID was able to detect MLC errors down to 2mm and dose errors of down to 3% depending on the …
Indirect Radio-Chemo-Beta Therapy: A Targeted Approach To Increase Biological Efficiency Of X-Rays Based On Energy, Sianne Oktaria, Stephanie Corde, Michael L. F Lerch, Konstantin K. Konstantinov, Anatoly B. Rosenfeld, Moeava Tehei
Indirect Radio-Chemo-Beta Therapy: A Targeted Approach To Increase Biological Efficiency Of X-Rays Based On Energy, Sianne Oktaria, Stephanie Corde, Michael L. F Lerch, Konstantin K. Konstantinov, Anatoly B. Rosenfeld, Moeava Tehei
Faculty of Engineering and Information Sciences - Papers: Part A
Despite the use of multimodal treatments incorporating surgery, chemotherapy and radiotherapy, local control of gliomas remains a major challenge. The potential of a new treatment approach called indirect radio-chemo-beta therapy using the synergy created by combining methotrexate (MTX) with bromodeoxyuridine (BrUdR) under optimum energy x-ray irradiation is assessed. 9L rat gliosarcoma cells pre-treated with 0.01 μM MTX and/or 10 μM BrUdR were irradiated in vitro with 50 kVp, 125 kVp, 250 kVp, 6 MV and 10 MV x-rays. The cytotoxicity was assessed using clonogenic survival as the radiobiological endpoint. The photon energy with maximum effect was determined using radiation sensitization …
Cyclotron Electron Beam Excited Surface Plasmon Polaritons Coherent Radiation, Sen Gong, Tao Zhao, Min Hu, Renbin Zhong, Xiaoxing Chen, Diwei Liu, Ping Zhang, C Zhang, Jian Chen, Biaobin Jin, Huabing Wang, Peiheng Wu, Shenggang Liu
Cyclotron Electron Beam Excited Surface Plasmon Polaritons Coherent Radiation, Sen Gong, Tao Zhao, Min Hu, Renbin Zhong, Xiaoxing Chen, Diwei Liu, Ping Zhang, C Zhang, Jian Chen, Biaobin Jin, Huabing Wang, Peiheng Wu, Shenggang Liu
Faculty of Engineering and Information Sciences - Papers: Part A
A physical mechanism of electron beam excitation of surface plasmon polaritons (SPPs) on the circular cylindrical structure and transformation into coherent radiation is proposed. Here SPPs on the circular cylindrical structures are excited by a cyclotron electron beam (CEB) rather than by the linearly moving electron beam (LEB). This change leads to an essential consequence due to the natural periodicity of 2π in structure and CEB, and this dual natural periodicity makes the SPPs transformation possible and brings significant excellences. HEM hybrid modes and TM0n modes SPPs can be excited and propagate along a cyclotron trajectory together with the CEB …
Nonlinear Terahertz Response Of Hgte/Cdte Quantum Wells, Qinjun Chen, Matthew Sanderson, C Zhang
Nonlinear Terahertz Response Of Hgte/Cdte Quantum Wells, Qinjun Chen, Matthew Sanderson, C Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
2015 AIP Publishing LLC. Without breaking the topological order, HgTe/CdTe quantum wells can have two types of bulk band structure: direct gap type (type I) and indirect gap type (type II). We report that the strong nonlinear optical responses exist in both types of bulk states under a moderate electric field in the terahertz regime. Interestingly, for the type II band structure, the third order conductivity changes sign when chemical potentials lies below 10meV due to the significant response of the hole excitation close to the bottom of conduction band. Negative nonlinear conductivities suggest that HgTe/CdTe quantum wells can find …
Comparative Evaluation Of Modern Dosimetry Techniques Near Low- And High-Density Heterogeneities, Eyad A. Alhakeem, Sami Alshaikh, Anatoly B. Rosenfeld, Sergei F. Zavgorodni
Comparative Evaluation Of Modern Dosimetry Techniques Near Low- And High-Density Heterogeneities, Eyad A. Alhakeem, Sami Alshaikh, Anatoly B. Rosenfeld, Sergei F. Zavgorodni
Faculty of Engineering and Information Sciences - Papers: Part A
The purpose of this study is to compare performance of several dosimetric methods in heterogeneous phantoms irradiated by 6 and 18 MV beams. Monte Carlo (MC) calculations were used, along with two versions of Acuros XB, anisotropic analytical algorithm (AAA), EBT2 film, and MOSkin dosimeters. Percent depth doses (PDD) were calculated and measured in three heterogeneous phantoms. The first two phantoms were a 30 x 30 x 30 cm3 solid-water slab that had an air-gap of 20x 2.5 x 2.35 cm3. The third phantom consisted of 30 x 30 x 5 cm3 solid water slabs, two 30 x 30 x …
Modeling Secondary Particle Tracks Generated By High-Energy Protons In Water, Francisco Blanco, Antonio Munoz, Diego T. Almeida, F. Ferreira Da Silva, Paulo Limao-Vieira, Alexey Verkhovtsev, L Ellis-Gibbings, K Krupa, A Traore, G Garcia
Modeling Secondary Particle Tracks Generated By High-Energy Protons In Water, Francisco Blanco, Antonio Munoz, Diego T. Almeida, F. Ferreira Da Silva, Paulo Limao-Vieira, Alexey Verkhovtsev, L Ellis-Gibbings, K Krupa, A Traore, G Garcia
Faculty of Engineering and Information Sciences - Papers: Part A
We present interaction probability data of low-energy secondary electrons and positrons produced due to the proton impact. The probability distribution functions serve as input data for the Low Energy Particle Track Simulation (LEPTS) approach which allows one to include the effect of low-energy species in medical applications of radiation and in ion-beam cancer therapy, in particular.
Mineral Precipitation And The Associated Reduction Of Hydraulic Conductivity In A Prb, U Pathirage, B Indraratna
Mineral Precipitation And The Associated Reduction Of Hydraulic Conductivity In A Prb, U Pathirage, B Indraratna
Faculty of Engineering and Information Sciences - Papers: Part A
Permeable reactive barriers (PRB) have been used worldwide for the in-situ treatment of con-taminated ground water. One such contamination found in Australia is acidic groundwater enriched with high concentrations of dissolved aluminium and iron produced in acid sulfate soil (ASS) terrains. To treat this acidi-ty in groundwater, a PRB was installed in the Shoalhaven Floodplain and then monitored over a seven year pe-riod. This remediation process was satisfactory but there was a small decrease in efficiency due to a secondary mineral precipitation (aluminium and iron oxy/hydroxides) which reduced the hydraulic conductivity of the PRB. Numerical modelling carried out through MODFLOW …
The Direct Shear Strength Of Sand-Tyre Shred Mixtures, J S. Vinod, N Sheikh, D Mastello, B Indraratna, M S. Mashiri
The Direct Shear Strength Of Sand-Tyre Shred Mixtures, J S. Vinod, N Sheikh, D Mastello, B Indraratna, M S. Mashiri
Faculty of Engineering and Information Sciences - Papers: Part A
Waste tyres are currently being stockpiled in large quantities around the world causing adverse environmental impact. Significant research is currently underway to investigate possible options for the reuse of waste tyre, particularly in civil engineering applications. One such option is to utilise waste tyre (in the form of tyre shreds) and sand mixture as a lightweight fill material in infrastructure constructions. Utilising waste tyre in civil engineering projects has multiple benefits, including effective recycling of the waste tyre easing the strain on natural fills, reducing material costs and enhancing the geotechnical properties of the soil. Under-standing the shear and volume …
A Particle-Breakage Critical State Model For Rockfill Material, Yang Xiao, Yifei Sun, Khairul Fikry Hanif
A Particle-Breakage Critical State Model For Rockfill Material, Yang Xiao, Yifei Sun, Khairul Fikry Hanif
Faculty of Engineering and Information Sciences - Papers: Part A
Particle breakage has a significant influence on the stress-strain and strength behavior of rockfill material. A breakage critical state theory (BCST) was proposed to describe the evolution of particle breakage. The breakage critical state line in the breakage critical state theory was correlated with the breakage factor, which was fundamentally different from that of the original critical state theory. A simple elastoplastic constitutive model was developed for rockfill in the frame of BCST. An associated flow rule was adopted in this model. Isotropic, contractive and distortional hardening rules were suggested in view of the particle breakage. It was observed that …
Von Neumann Algebras Of Strongly Connected Higher-Rank Graphs, Marcelo Laca, Nadia S. Larsen, Sergey Neshveyev, Aidan Sims, Samuel B. Webster
Von Neumann Algebras Of Strongly Connected Higher-Rank Graphs, Marcelo Laca, Nadia S. Larsen, Sergey Neshveyev, Aidan Sims, Samuel B. Webster
Faculty of Engineering and Information Sciences - Papers: Part A
We investigate the factor types of the extremal KMS states for the preferred dynamics on the Toeplitz algebra and the Cuntz-Krieger algebra of a strongly connected finite (Formula presented.)-graph. For inverse temperatures above 1, all of the extremal KMS states are of type (Formula presented.). At inverse temperature 1, there is a dichotomy: if the (Formula presented.)-graph is a simple (Formula presented.)-dimensional cycle, we obtain a finite type (Formula presented.) factor; otherwise we obtain a type III factor, whose Connes invariant we compute in terms of the spectral radii of the coordinate matrices and the degrees of cycles in the …
Nonlinear Response Of Laterally Loaded Rigid Piles In Sliding Soil, Wei Dong Guo
Nonlinear Response Of Laterally Loaded Rigid Piles In Sliding Soil, Wei Dong Guo
Faculty of Engineering and Information Sciences - Papers: Part A
This paper proposes a new, integrated two-layer model to capture nonlinear response of rotationally restrained laterally loaded rigid piles subjected to soil movement (sliding soil, or lateral spreading). First, typical pile response from model tests (using an inverse triangular loading profile) is presented, which includes profiles of ultimate on-pile force per unit length at typical sliding depths, and the evolution of pile deflection, rotation, and bending moment with soil movement. Second, a new model and closed-form expressions are developed for rotationally restrained passive piles in two-layer soil, subjected to various movement profiles. Third, the solutions are used to examine the …
Using Rasch Analysis To Explore What Students Learn About Probability Concept, Zamalia Mahmud, Anne L. Porter
Using Rasch Analysis To Explore What Students Learn About Probability Concept, Zamalia Mahmud, Anne L. Porter
Faculty of Engineering and Information Sciences - Papers: Part A
Students’ understanding of probability concepts have been investigated from various different perspectives. This study was set out to investigate perceived understanding of probability concepts of forty-four students from the STAT131 Understanding Uncertainty and Variation course at the University of Wollongong, NSW. Rasch measurement which is based on a probabilistic model was used to identify concepts that students find easy, moderate and difficult to understand. Data were captured from the e-learning Moodle platform where students provided their responses through an on-line quiz. As illustrated in the Rasch map, 96% of the students could understand about sample space, simple events, mutually exclusive …
Multi-Phase Variety Trials Using Both Composite And Individual Replicate Samples: A Model-Based Design Approach, Alison B. Smith, David G. Butler, C R. Cavanagh, Brian R. Cullis
Multi-Phase Variety Trials Using Both Composite And Individual Replicate Samples: A Model-Based Design Approach, Alison B. Smith, David G. Butler, C R. Cavanagh, Brian R. Cullis
Faculty of Engineering and Information Sciences - Papers: Part A
The present paper provides an approach for the design and analysis of variety trials that are used to obtain quality trait data. These trials are multi-phase in nature, comprising a field phase followed by one or more laboratory phases. Typically the laboratory phases are costly relative to the field phase and this imposes a limit on the number of samples that can be tested. Historically, this has been achieved by sacrificing field replication, either by testing a single replicate plot for each variety or a single composite sample, obtained by combining material from several field replicates. An efficient statistical analysis …
On The Question Of Effective Sample Size In Network Modeling: An Asymptotic Inquiry, Pavel N. Krivitsky, Eric D. Kolaczyk
On The Question Of Effective Sample Size In Network Modeling: An Asymptotic Inquiry, Pavel N. Krivitsky, Eric D. Kolaczyk
Faculty of Engineering and Information Sciences - Papers: Part A
The modeling and analysis of networks and network data has seen an explosion of interest in recent years and represents an exciting direction for potential growth in statistics. Despite the already substantial amount of work done in this area to date by researchers from various disciplines, however, there remain many questions of a decidedly foundational nature - natural analogues of standard questions already posed and addressed in more classical areas of statistics - that have yet to even be posed, much less addressed. Here we raise and consider one such question in connection with network modeling. Specifically, we ask, "Given …
Vivambc: Estimating Viral Sequence Variation In Complex Populations From Illumina Deep-Sequencing Data Using Model-Based Clustering, Bie M. P Verbist, Lieven Clement, Joke Reumers, Kim Thys, Alexander Vapirev, Willem Talloen, Yves Wetzels, Joris Meys, Jeroen Aerssens, Luc Bijnens, Olivier Thas
Vivambc: Estimating Viral Sequence Variation In Complex Populations From Illumina Deep-Sequencing Data Using Model-Based Clustering, Bie M. P Verbist, Lieven Clement, Joke Reumers, Kim Thys, Alexander Vapirev, Willem Talloen, Yves Wetzels, Joris Meys, Jeroen Aerssens, Luc Bijnens, Olivier Thas
Faculty of Engineering and Information Sciences - Papers: Part A
Background: Deep-sequencing allows for an in-depth characterization of sequence variation in complex populations. However, technology associated errors may impede a powerful assessment of low-frequency mutations. Fortunately, base calls are complemented with quality scores which are derived from a quadruplet of intensities, one channel for each nucleotide type for Illumina sequencing. The highest intensity of the four channels determines the base that is called. Mismatch bases can often be corrected by the second best base, i.e. the base with the second highest intensity in the quadruplet. A virus variant model-based clustering method, ViVaMBC, is presented that explores quality scores and second …
In-Arrears Interest Rate Derivatives Under The 3/2 Model, Joanna M. Goard
In-Arrears Interest Rate Derivatives Under The 3/2 Model, Joanna M. Goard
Faculty of Engineering and Information Sciences - Papers: Part A
Lie symmetry methods are used to find a closed form solution for in-arrears swaps under the 3/2 model ( ( ) ) ˆ 3 dr = r A t −α r dt + cr 2dZ . As well, approximate solutions are found for short-tenor inarrears caplets and floorlets under the same interest rate model. Comparisons are made of the approximate option values with those obtained with a computationally-intensive numerical scheme. The approximate pricing is found to be substantially fast easy to implement, while the relative errors with respect to the “true” prices are very small.
Topological Realizations And Fundamental Groups Of Higher-Rank Graphs, S Kaliszewski, Alexander Kumjian, John C. Quigg, Aidan Sims
Topological Realizations And Fundamental Groups Of Higher-Rank Graphs, S Kaliszewski, Alexander Kumjian, John C. Quigg, Aidan Sims
Faculty of Engineering and Information Sciences - Papers: Part A
We investigate topological realizations of higher-rank graphs. We show that the fundamental group of a higher-rank graph coincides with the fundamental group of its topological realization. We also show that topological realization of higher-rank graphs is a functor and that for each higher-rank graph Λ, this functor determines a category equivalence between the category of coverings of Λ and the category of coverings of its topological realization. We discuss how topological realization relates to two standard constructions for k-graphs: projective limits and crossed products by finitely generated free abelian groups.
The Bulk-Edge Correspondence For The Quantum Hall Effect In Kasparov Theory, Christopher J. Bourne, Alan L. Carey, Adam C. Rennie
The Bulk-Edge Correspondence For The Quantum Hall Effect In Kasparov Theory, Christopher J. Bourne, Alan L. Carey, Adam C. Rennie
Faculty of Engineering and Information Sciences - Papers: Part A
We prove the bulk-edge correspondence in K-theory for the quantum Hall effect by constructing an unbounded Kasparov module from a short exact sequence that links the bulk and boundary algebras. This approach allows us to represent bulk topological invariants explicitly as a Kasparov product of boundary invariants with the extension class linking the algebras. This paper focuses on the example of the discrete integer quantum Hall effect, though our general method potentially has much wider applications.
A Note On The Boundary Behavior For A Modified Green Function In The Upper-Half Space, Y Zhang, Valery Piskarev
A Note On The Boundary Behavior For A Modified Green Function In The Upper-Half Space, Y Zhang, Valery Piskarev
Faculty of Engineering and Information Sciences - Papers: Part A
Motivated by (Xu et al. in Bound. Value Probl. 2013:262, 2013) and (Yang and Ren in Proc. Indian Acad. Sci. Math. Sci. 124(2):175-178, 2014), in this paper we aim to construct a modified Green function in the upper-half space of the n-dimensional Euclidean space, which generalizes the boundary property of general Green potential.
Will It Be The End Of The Line For Newcastle's Train, Or For Baird?, Philip G. Laird
Will It Be The End Of The Line For Newcastle's Train, Or For Baird?, Philip G. Laird
Faculty of Engineering and Information Sciences - Papers: Part A
No abstract provided.
A Semi-Analytical Analysis Of The Stability Of The Reversible Selkov Model, Khaled. Al Noufaey, Timothy R. Marchant, Maureen P. Edwards
A Semi-Analytical Analysis Of The Stability Of The Reversible Selkov Model, Khaled. Al Noufaey, Timothy R. Marchant, Maureen P. Edwards
Faculty of Engineering and Information Sciences - Papers: Part A
Semi-analytical solutions for the reversible Selkov model are developed and used to investigate its static and dynamic stability. A one-dimensional reaction-diffusion cell is considered with all steps of the Selkov reaction modeled. A coupled set of four partial differential equations is obtained for the precursor, reactant, autocatalyst and final product concentrations. The Galerkin method is applied to approximate the spatial structure of the concentrations to obtain a lower-order, ordinary differential equation model, as an approximation to the governing partial differential equations. The semi-analytical model is analysed to obtain steady-state solutions, bifurcation diagrams and parameter maps in which the different types …
Design Of Geometric Parameters Of A Double-Sided Linear Induction Motor With Ladder Secondary And A Consideration For Reducing Cogging Force, Mochammad Rusli, Christopher David Cook
Design Of Geometric Parameters Of A Double-Sided Linear Induction Motor With Ladder Secondary And A Consideration For Reducing Cogging Force, Mochammad Rusli, Christopher David Cook
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, design of the physical of double-sided linear induction motor with ladder secondary is presented. It has aim to obtain the high-precision of DSLIM for the linear slow speed applications. One of limiting factor for precision linear movement is cogging force. The efforts in reducing the cogging action in rotary induction motor has been conducted very well. However, the cogging force reduction in the DSLIM with ladder secondary has not been done before. The DSLIM provide a great advantages for LIM-driven wheel vehicles for specific applications, for example vehicles that are used in over short distances, e.g. at …
Local Strain Analysis Of The Tertiary Oxide Scale Formed On A Hot-Rolled Steel Strip Via Ebsd, Xianglong Yu, Zhengyi Jiang, Jingwei Zhao, Dongbin Wei, Ji Zhou, Cunlong Zhou, Qingxue Huang
Local Strain Analysis Of The Tertiary Oxide Scale Formed On A Hot-Rolled Steel Strip Via Ebsd, Xianglong Yu, Zhengyi Jiang, Jingwei Zhao, Dongbin Wei, Ji Zhou, Cunlong Zhou, Qingxue Huang
Faculty of Engineering and Information Sciences - Papers: Part A
This work presents a fine microstructure and local misorientation study of various oxide phases in the tertiary oxide scale formed on a hot-rolled steel strip via electron back-scattering diffraction (EBSD). Local strain in individual grains of four phases, ferrite (α-Fe), wustite (FeO), magnetite (Fe3O4) and hematite (α-Fe2O3), has been systematically analysed. The results reveal that Fe3O4 has a lower local strain than α-Fe2O3, in particular, on the surface and inner layers of the oxide scale. The multiphase oxides along the cracking or α-Fe2O …
Piezoelectric Polymers As Biomaterials For Tissue Engineering Applications, Clarisse Ribeiro, Vitor Sencadas, Daniela M. Correia, Senentxu Lanceros-Méndez
Piezoelectric Polymers As Biomaterials For Tissue Engineering Applications, Clarisse Ribeiro, Vitor Sencadas, Daniela M. Correia, Senentxu Lanceros-Méndez
Faculty of Engineering and Information Sciences - Papers: Part A
Tissue engineering often rely on scaffolds for supporting cell differentiation and growth. Novel paradigms for tissue engineering include the need of active or smart scaffolds in order to properly regenerate specific tissues. In particular, as electrical and electromechanical clues are among the most relevant ones in determining tissue functionality in tissues such as muscle and bone, among others, electroactive materials and, in particular, piezoelectric ones, show strong potential for novel tissue engineering strategies, in particular taking also into account the existence of these phenomena within some specific tissues, indicating their requirement also during tissue regeneration. This referee reports on piezoelectric …
The Effect Of Nb On The Continuous Cooling Transformation Curves Of Ultra-Thin Strip Castrip© Steels, Kristin R. Carpenter, Chris R. Killmore
The Effect Of Nb On The Continuous Cooling Transformation Curves Of Ultra-Thin Strip Castrip© Steels, Kristin R. Carpenter, Chris R. Killmore
Faculty of Engineering and Information Sciences - Papers: Part A
The effect of Nb on the hardenability of ultra-thin cast strip (UCS) steels produced via the unique regime of rapid solidification, large austenite grain size, and inclusion engineering of the CASTRIP© process was investigated. Continuous cooling transformation (CCT) diagrams were constructed for 0, 0.014, 0.024, 0.04, 0.06 and 0.08 wt% Nb containing UCS steels. Phase nomenclature for the identification of lower transformation product in low carbon steels was reviewed. Even a small addition of 0.014 wt% Nb showed a potent effect on hardenability, shifting the ferrite C-curve to the right and expanding the bainitic ferrite and acicular ferrite phase …
Three Dimensional Dose Verification Of Vmat Plans Using The Octavius 4d Dosimetric System, Sankar Arumugam, Aitang Xing, Tony Young, David Thwaites, Lois C. Holloway
Three Dimensional Dose Verification Of Vmat Plans Using The Octavius 4d Dosimetric System, Sankar Arumugam, Aitang Xing, Tony Young, David Thwaites, Lois C. Holloway
Faculty of Engineering and Information Sciences - Papers: Part A
The Octavius 4D dosimetric system generates a 3D dose matrix based on a measured planar dose and user supplied Percentage Depth Dose (PDD) data. The accuracy of 3D dose matrices reconstructed by the Octavius 4D dosimetric system was systematically studied for an open static field, an open arc field and clinical VMAT plans. The Octavius reconstructed 3D dose matrices were compared with the Treatment Planning System (TPS) calculated 3D dose matrices using 3D gamma (gamma) analysis with 2%/2mm and 3%/3mm tolerance criteria. The larger detector size in the 2D detector array of the Octavius system resulted in failed voxels in …
Block Shear Failure Planes Of Bolted Connections - Direct Experimental Verifications, Lip H. Teh, Mehmet E. Uz
Block Shear Failure Planes Of Bolted Connections - Direct Experimental Verifications, Lip H. Teh, Mehmet E. Uz
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents direct experimental verifications of the active shear planes in bolted connections, previously identified by the first author for determining the block shear capacity. The laboratory test results were obtained by independent researchers for specimens where the applied loads were resisted by the "block" in shear only. The first set consists of five bolted connection specimens in the webs of wide flange sections where the tensile resistance planes had been sawn off. The second set consists of ten bolted connection specimens each in one leg of an angle section that had fractured completely along the net tensile plane …