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Polymorphic Male Color Morphs Visualized With Steroids In Monomorphic Females: A Tool For Designing Analysis Of Sex-Limited Trait Inheritance, Mats M. Olsson, Mo Healey, Mark Wilson, Michael Tobler Feb 2012

Polymorphic Male Color Morphs Visualized With Steroids In Monomorphic Females: A Tool For Designing Analysis Of Sex-Limited Trait Inheritance, Mats M. Olsson, Mo Healey, Mark Wilson, Michael Tobler

Faculty of Science, Medicine and Health - Papers: part A

In diploid animals, males and females share most of the genome (except sex-specific elements, such as sex chromosome genes), yet despite sharing the underlying genes that hard-wire traits, males and females may differ in their phenotypes when traits are controlled by proximate mechanisms, such as hormones. In color polymorphic species where coloration is only expressed in one sex, the design of studies of the inheritance of color and coevolved morph-specific traits (e.g. territorial vs sneaker strategies, skewed energetic investment in territorial defense vs sperm production, etc.) is compromised as the expression of morph-coding genes is only visualized in one sex. …


An Empirical Analysis Of Iran's Banking Performance, Amir Arjomandi, Charles Harvie, Abbas Valadkhani Jan 2012

An Empirical Analysis Of Iran's Banking Performance, Amir Arjomandi, Charles Harvie, Abbas Valadkhani

Faculty of Commerce - Papers (Archive)

Purpose – The purpose of this paper is to investigate the efficiency and productivity growth of the Iranian banking industry between 2003 and 2008, encompassing pre- and post-2005-reform years.

Design/methodology/approach – The study uses a new decomposition of the Hicks-Moorsteen total factor productivity index developed by O’Donnell to analyse efficiency and productivity changes in a banking context. The advantage of this approach over the popular constant-returns-to-scale Malmquist productivity index is that it is free from any assumptions concerning firms’ optimising behaviour, the structure of markets, or returns to scale. The paper assumes that the production technology exhibits variable returns to …


Further Analysis Of A Practical Hierarchical Identity-Based Encryption Scheme, Ying Sun, Yong Yu, Yi Mu Jan 2012

Further Analysis Of A Practical Hierarchical Identity-Based Encryption Scheme, Ying Sun, Yong Yu, Yi Mu

Faculty of Informatics - Papers (Archive)

No abstract provided.


Fault Analysis Of The Katan Family Of Block Ciphers, Shekh Faisal Abdul-Latip, Mohammad Reza Reyhanitabar, Willy Susilo, Jennifer Seberry Jan 2012

Fault Analysis Of The Katan Family Of Block Ciphers, Shekh Faisal Abdul-Latip, Mohammad Reza Reyhanitabar, Willy Susilo, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

In this paper, we investigate security of the KATAN family of block ciphers against differential fault attacks. KATAN consists of three variants with 32, 48 and 64-bit block sizes, called KATAN32, KATAN48 and KATAN64, respectively. All three variants have the same key length of 80 bits. We assume a single-bit fault injection model where the adversary is supposed to be able to corrupt a single random bit of the internal state of the cipher and this fault induction process can be repeated (by resetting the cipher); i.e., the faults are transient rather than permanent. First, we show how to identify …


A Fundamental Analysis Of Continuous Flow Bioreactor And Membrane Reactor Models With Non-Competitive Product Inhibition. Iii. Linear Inhibition, Mark I. Nelson, Wei X. Lim Jan 2012

A Fundamental Analysis Of Continuous Flow Bioreactor And Membrane Reactor Models With Non-Competitive Product Inhibition. Iii. Linear Inhibition, Mark I. Nelson, Wei X. Lim

Faculty of Informatics - Papers (Archive)

The steady-state production of a product produced through the growth of microorganisms in a continuous flow bioreactor is presented. A generalised reactor model is used in which both the classic well-stirred bioreactor and the idealised membrane bioreactor are considered as special cases. The reaction is assumed to be governed by Monod growth kinetics subject to non-competitive product inhibition. Inhibition is modelled as a decreasing linear function of the product concentration with a finite cut-off. This reaction scheme is well documented in the literature, although a stability analysis of the governing equations has not previously been presented. The steady-state solutions for …


Multivariate Whole Genome Average Interval Mapping: Qtl Analysis For Multiple Traits And/Or Environments, Arunas P. Verbyla, Brian R. Cullis Jan 2012

Multivariate Whole Genome Average Interval Mapping: Qtl Analysis For Multiple Traits And/Or Environments, Arunas P. Verbyla, Brian R. Cullis

Faculty of Informatics - Papers (Archive)

A major aim in some plant-based studies is the determination of quantitative trait loci (QTL) for multiple traits or across multiple environments. Understanding these QTL by trait or QTL by environment interactions can be of great value to the plant breeder. A whole genome approach for the analysis of QTL is presented for such multivariate applications. The approach is an extension of whole genome average interval mapping in which all intervals on a linkage map are included in the analysis simultaneously. A random effects working model is proposed for the multivariate (trait or environment) QTL effects for each interval, with …


Fish Consumption And Chd Mortality: An Updated Meta-Analysis Of Seventeen Cohort Studies, Jusheng Zheng, Tao Huang, Yinghua Yu, Xiaojie Hu, Bin Yang, Duo Li Jan 2012

Fish Consumption And Chd Mortality: An Updated Meta-Analysis Of Seventeen Cohort Studies, Jusheng Zheng, Tao Huang, Yinghua Yu, Xiaojie Hu, Bin Yang, Duo Li

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objective Results of studies on fish consumption and CHD mortality are inconsistent. The present updated meta-analysis was conducted to investigate the up-to-date pooling effects. Design A random-effects model was used to pool the risk estimates. Generalized least-squares regression and restricted cubic splines were used to assess the possible dose–response relationship. Subgroup analyses were conducted to examine the sources of heterogeneity. Setting PubMed and ISI Web of Science databases up to September 2010 were searched and secondary referencing qualified for inclusion in the study. Subjects Seventeen cohorts with 315 812 participants and average follow-up period of 15·9 years were identified. Results …


Are Parents' Working Patterns Associated With Their Child's Sleep? An Analysis Of Dual-Parent Families In Australia, Christopher A. Magee, Peter Caputi, Don C. Iverson Jan 2012

Are Parents' Working Patterns Associated With Their Child's Sleep? An Analysis Of Dual-Parent Families In Australia, Christopher A. Magee, Peter Caputi, Don C. Iverson

Faculty of Health and Behavioural Sciences - Papers (Archive)

Insufficient sleep in children predicts emotional and behavioral problems, poorer school performance, and health problems. Child sleep durations have declined in recent decades, suggesting a need to identify and understand predictors of short sleep. The present study investigated whether aspects of parental employment (i.e. parental work hours, and non-standard work hours) were associated with sleep in children. Data collected from 2477 children aged 6–7 years as part of the Longitudinal Study of Australian Children were used in this paper. Child sleep duration, bedtimes, and wake times were determined from parent self-report using time-use diaries. Parents completed a survey assessing their …


Why Do Patients Having Coronary Artery Bypass Grafts Have Different Costs Or Length Of Stay? An Analysis Across 10 European Countries, James Gaughan, Conrad Kobel, Caroline Linhart, Anne Mason, Andrew Street, Padraic Ward Jan 2012

Why Do Patients Having Coronary Artery Bypass Grafts Have Different Costs Or Length Of Stay? An Analysis Across 10 European Countries, James Gaughan, Conrad Kobel, Caroline Linhart, Anne Mason, Andrew Street, Padraic Ward

Faculty of Business - Papers (Archive)

We analyse variations in cost or length of stay (LoS) for 66 587 patients from 10 European countries receiving a coronary artery bypass graft (CABG) procedure. In five of these countries, variations in cost are analysed using log-linear models. In the other five countries, negative binomial regression models are used to explore variations in LoS. We compare how well each country's diagnosis-related group (DRG) system and a set of patient-level characteristics explain these variations. The most important explanatory factors are the total number of diagnoses and procedures, although no clear effects are evident for our CABG-specific diagnostic and procedural variables. …


Molecular Dynamics Analysis Of Apolipoprotein-D - Lipid Hydroperoxide Interactions: Mechanism For Selective Oxidation Of Met-93, Aaron J. Oakley, Surabhi Bhatia, Heath Ecroyd, Brett Garner Jan 2012

Molecular Dynamics Analysis Of Apolipoprotein-D - Lipid Hydroperoxide Interactions: Mechanism For Selective Oxidation Of Met-93, Aaron J. Oakley, Surabhi Bhatia, Heath Ecroyd, Brett Garner

Faculty of Science - Papers (Archive)

Background: Recent studies suggest reduction of radical-propagating fatty acid hydroperoxides to inert hydroxides by interaction with apolipoprotein-D (apoD) Met93 may represent an antioxidant function for apoD. The nature and structural consequences of this selective interaction are unknown.

Methodology/Principal Findings: Herein we used molecular dynamics (MD) analysis to address these issues. Longtimescale simulations of apoD suggest lipid molecules are bound flexibly, with the molecules free to explore multiple conformations in a binding site at the entrance to the classical lipocalin ligand-binding pocket. Models of 5s- 12s- and 15s hydroperoxyeicosatetraenoic acids were created and the lipids found to wrap around Met93 thus …


'If My Arms And Legs Aren't Dropping Off I'Ll Wait To See My Usual Gp!' An Analysis Of Older Patients' Attitudes To Registrars Informed By Agency Theory, Andrew D. Bonney, Sandra C. Jones, Donald C. Iverson, Christopher A. Magee Jan 2012

'If My Arms And Legs Aren't Dropping Off I'Ll Wait To See My Usual Gp!' An Analysis Of Older Patients' Attitudes To Registrars Informed By Agency Theory, Andrew D. Bonney, Sandra C. Jones, Donald C. Iverson, Christopher A. Magee

Graduate School of Medicine - Papers (Archive)

Continuity of care and trust are important in older patient-doctor relationships which impacts older patient willingess to consult registrars for chronic disease management.


An Ecosystem Approach To Management Of Seamounts In The Southern Indian Ocean. Volume 3 - Legal And Institutional Gap Analysis, Robin M. Warner, Philomene Verlaan, Gail Lugten Jan 2012

An Ecosystem Approach To Management Of Seamounts In The Southern Indian Ocean. Volume 3 - Legal And Institutional Gap Analysis, Robin M. Warner, Philomene Verlaan, Gail Lugten

Faculty of Law, Humanities and the Arts - Papers (Archive)

The International Union for Conservation of Nature (IUCN) is committed to achieving effective protection, restoration and sustainable use of biological diversity and ecosystem processes on the high seas. IUCN Resolution 4.031 (2008), “Achieving conservation of marine biodiversity in areas beyond national jurisdiction”, called, inter alia, for the promotion of arrangements, processes and agreements that ensure the consistent, coordinated and coherent application of the best conservation and governance principles and approaches, including integrated ecosystem-based management and the precautionary approach.


Dietary Docosahexaenoic Acid (22:6) Incorporates Into Cardiolipin At The Expense Of Linoleic Acid (18:2): Analysis And Potential Implications, Colin Cortie, Paul L. Else Jan 2012

Dietary Docosahexaenoic Acid (22:6) Incorporates Into Cardiolipin At The Expense Of Linoleic Acid (18:2): Analysis And Potential Implications, Colin Cortie, Paul L. Else

Faculty of Science, Medicine and Health - Papers: part A

Cardiolipin is a signature phospholipid of major functional significance in mitochondria. In heart mitochondria the fatty acid composition of cardiolipin is commonly viewed as highly regulated due to its high levels of linoleic acid (18:2n − 6) and the dominant presence of a 4×18:2 molecular species. However, analysis of data from a comprehensive compilation of studies reporting changes in fatty acid composition of cardiolipin in heart and liver mitochondria in response to dietary fat shows that, in heart the accrual of 18:2 into cardiolipin conforms strongly to its dietary availability at up to 20% of total dietary fatty acid and …


An Analysis Of Mature Aged Female Participation In New South Wales Regional Labour Markets, Natalie Akmacic, Martin O'Brien Jan 2012

An Analysis Of Mature Aged Female Participation In New South Wales Regional Labour Markets, Natalie Akmacic, Martin O'Brien

Faculty of Business - Papers (Archive)

The analysis of regional markets has surfaced as an important emerging area of economic research in recent years. In particular, economists have attempted to explain the factors behind divergent trends in different regions' growth, migration, structural change and employment. With this in mind, the focus of this paper is to explore the trends in regional labour force participation for mature females over the period 1992 to present. The labour force participation of this group is particularly relevant in the context of Australia's ageing population. To analyse mature age participation we utilise ANOVA to determine the differences between various Australian regions …


Inelastic Stability Analysis Of High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Muhammad N. S Hadi Jan 2012

Inelastic Stability Analysis Of High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Muhammad N. S Hadi

Faculty of Engineering - Papers (Archive)

There is relatively little numerical study on the behavior of eccentrically loaded high strength rectangular concrete-filled steel tubular (CFST) slender beam-columns with large depth-to-thickness ratios, which may undergo local and global buckling. This paper presents a multi scale numerical model for simulating the interaction local and global buckling behavior of hlgh strength thin-walled rectangular CFST slender beam-columns under eccentric loading. The effects of progressive local buckling are taken into account in the mesoscale model based on fiber element formulations. Computational algorithms based on the Muller's method are developed to obtain complete load-deflection responses of CFST slender beam-columns at the macroscale …


Analysis Of Jet Characteristics And Structural Optimization Of A Liquamatic Fire Water Monitor With Self-Swinging Mechanism, Guoliang Hu, Ming Long, Juxing Liang, Weihua Li Jan 2012

Analysis Of Jet Characteristics And Structural Optimization Of A Liquamatic Fire Water Monitor With Self-Swinging Mechanism, Guoliang Hu, Ming Long, Juxing Liang, Weihua Li

Faculty of Engineering - Papers (Archive)

This paper presents analysis and optimization of a liquamatic fire water monitor with a novel self-swinging mechanism. The design of the self-swinging mechanism has adopted a four-bar linkage driven by an impeller. The Fluent software was used to simulate the internal flow performance of the fire water monitor. In particular, the effects of the cross-sectional shape, diameters of the monitor body, inlet water pressure, and drive set of the self-swinging mechanism on the jet characteristics were analyzed. These analyses have led to optimal structural parameters of the flow channel. A prototype of the fire ware monitor was manufactured, and the …


Participant Experiences From Chronic Administration Of A Multivitamin Versus Placebo On Subjective Health And Wellbeing: A Double-Blind Qualitative Analysis Of A Randomised Controlled Trial, Jerome Sarris, Katherine H M Cox, David A. Camfield, Andrew Scholey, Con Stough, Erin Fogg, Marni Kras, David J. White, Avni Sali, Andrew Pipingas Jan 2012

Participant Experiences From Chronic Administration Of A Multivitamin Versus Placebo On Subjective Health And Wellbeing: A Double-Blind Qualitative Analysis Of A Randomised Controlled Trial, Jerome Sarris, Katherine H M Cox, David A. Camfield, Andrew Scholey, Con Stough, Erin Fogg, Marni Kras, David J. White, Avni Sali, Andrew Pipingas

Faculty of Social Sciences - Papers (Archive)

Background While many randomised controlled trials have been conducted on multivitamins, to our knowledge no qualitative research exploring the subjective experience of taking a multivitamin during a clinical trial has been reported. Methods Semi-structured and open-ended written questions were incorporated into a 16-week double-blind, randomised, placebo-controlled, parallel groups trial of once-daily multivitamin administration. At the final study visit (week 16), three open-ended questions were posed to elucidate any positive, negative or unusual experiences from taking either the multivitamin or matched placebo. Qualitative thematic analysis was undertaken by researchers who were blind as to treatment condition of participants, and triangulation (independent …


Referral Patterns And Proximity To Palliative Care Inpatient Services By Level Of Socio-Economic Disadvantage. A National Study Using Spatial Analysis., David C. Currow, Samuel F. Allingham, Sonia Bird, Patsy Yates, Joanne Lewis, James P. Dawber, Kathy Eagar Jan 2012

Referral Patterns And Proximity To Palliative Care Inpatient Services By Level Of Socio-Economic Disadvantage. A National Study Using Spatial Analysis., David C. Currow, Samuel F. Allingham, Sonia Bird, Patsy Yates, Joanne Lewis, James P. Dawber, Kathy Eagar

Australian Health Services Research Institute

Background A range of health outcomes at a population level are related to differences in levels of social disadvantage. Understanding the impact of any such differences in palliative care is important. The aim of this study was to assess, by level of socio-economic disadvantage, referral patterns to specialist palliative care and proximity to inpatient services. Methods All inpatient and community palliative care services nationally were geocoded (using postcode) to one nationally standardised measure of socio-economic deprivation - Socio- Economic Index for Areas (SEIFA; 2006 census data). Referral to palliative care services and characteristics of referrals were described through data collected …


A New Approach For Considering A Dual-Role Factor In Data Envelopment Analysis, Abdollah Noorizadeh, Mahdi Mahdiloo, Reza Farzipoor Saen Jan 2012

A New Approach For Considering A Dual-Role Factor In Data Envelopment Analysis, Abdollah Noorizadeh, Mahdi Mahdiloo, Reza Farzipoor Saen

Sydney Business School - Papers

The conventional data envelopment analysis models deal with dualrole factor as non-discretionary (uncontrollable) factor. However, there might be dual-role factor which is under control of decision-maker. In addition, despite the fact that there are several publications addressing dual-role factors, it seems that their idea of classifying a factor as an input or an output within a single model has a limitation. They also do not consider non-zero input and output slacks and cannot fully measure the inefficiency of decision-making units. To resolve these limitations and to consider dual-role factor as well, this paper proposes a slacks-based measure model which does …


A Novel Data Envelopment Analysis Model For Solving Supplier Selection Problems With Undesirable Outputs And Lack Of Inputs, Mahdi Mahdiloo, Reza Farzipoor Saen, Madjid Tavana Jan 2012

A Novel Data Envelopment Analysis Model For Solving Supplier Selection Problems With Undesirable Outputs And Lack Of Inputs, Mahdi Mahdiloo, Reza Farzipoor Saen, Madjid Tavana

Sydney Business School - Papers

Supplier evaluation and selection problems are inherently multi-criteria decision problems. Numerous analytical techniques ranging from simple weighted scoring to complex mathematical programming approaches have been proposed to solve these problems. Data Envelopment Analysis (DEA) has been used to evaluate suppliers' performance when there are multiple inputs and outputs in the supplier selection problem. The DEA determines the relative efficiencies of multiple suppliers. These relative efficiencies are then used to provide benchmarking data for reducing the number of suppliers. The DEA models used for supplier selection require numerical data for all the inputs and outputs for all the suppliers. However, this …


An Evaluation Of Technology Integration In Teaching Statistics: A Multivariate Survey Analysis, Abdellatif Tchantchane, Pauline Fortes, Swapna Koshy Jan 2012

An Evaluation Of Technology Integration In Teaching Statistics: A Multivariate Survey Analysis, Abdellatif Tchantchane, Pauline Fortes, Swapna Koshy

University of Wollongong in Dubai - Papers

Teaching and learning in higher education has been influenced by the rapid rate of innovation in technology. A technology intervention was used to teach Foundation Statistics. This paper reports students' performance relative to those taught statistics using traditional teaching methods. Failure rate was reduced from 34% with traditional teaching to only 14% with the inclusion of technology, and in order to measure students' perception towards the integration of techn0ology in the subject, a total of 144 students of 30 different nationalities were surveyed at the end of the semester before the final examination. The analysis of the survey highlighted the …


Nonlinear Analysis Of Biaxially Loaded High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Part Ii: Applications, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Muhammad N. S Hadi Jan 2012

Nonlinear Analysis Of Biaxially Loaded High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Part Ii: Applications, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part A

This paper presents the verification and applications of a numerical model developed for biaxially loaded high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beamcolumns with local buckling effects. The accuracy of the numerical model is established by comparisons of numerical results with existing experimental data. The verified numerical model is employed to investigate the effects of four parameters including concrete compressive strength, loading eccentricity, depth-to-thickness ratio and columns slenderness on the strength reduction factor and steel contribution ratio of CFST slender beam-columns under biaxial bending. The results obtained indicate that increasing each of the four parameters decreases the strength …


Induction Motors Subject To Regular Voltage Fluctuations: Stator And Rotor Current Analysis From A Heating Perspective, Kun Zhao, Philip Ciufo, Sarath Perera Jan 2012

Induction Motors Subject To Regular Voltage Fluctuations: Stator And Rotor Current Analysis From A Heating Perspective, Kun Zhao, Philip Ciufo, Sarath Perera

Faculty of Engineering and Information Sciences - Papers: Part A

Induction motors are widely applied in industry. Their performance strongly depends on relative power supply quality, such as voltage sags, harmonics, voltage unbalance and voltage fluctuations. This paper investigates the impact of voltage fluctuations on induction motor performance, particularly the stator and rotor current variation characteristics. An induction motor steady state analysis method is proposed when the motor is subjected to regular voltage fluctuations. The dynamic model of an induction motor is used in order to represent the induction motor instantaneous response. Furthermore, the correlative simulation and experiment work are presented in order to illustrate the impact of voltage fluctuations. …


Performance Analysis Of Stfc Mb-Ofdm Uwb In Wban Channels, Miftadi Sudjai, Le Chung Tran, Farzad Safaei Jan 2012

Performance Analysis Of Stfc Mb-Ofdm Uwb In Wban Channels, Miftadi Sudjai, Le Chung Tran, Farzad Safaei

Faculty of Engineering and Information Sciences - Papers: Part A

This paper investigates the performance of the space-time-frequency coded (STFC) multiband orthogonal frequency division multiplexing ultra-wideband (MBOFDM UWB) system over wireless body area network (WBAN) channels, using the Alamouti code. Different MIMO configurations and different modulations are used for comparison. The effect of body directions is also assessed by simulation in this paper. Simulation results show that the proposed STFC MB-OFDM UWB system provides a significantly better BER performance, compared to the conventional MB-OFDM system, even from a reasonably low Eb/No range. The simulations also confirm that the body direction affects the system performance significantly due to the availability of …


Finite Element Analysis Of Debonding Failures In Cfrp-Strengthened Rectangular Steel Tubes Subjected To An End Bearing Load, D Fernando, T Yu, J G. Teng Jan 2012

Finite Element Analysis Of Debonding Failures In Cfrp-Strengthened Rectangular Steel Tubes Subjected To An End Bearing Load, D Fernando, T Yu, J G. Teng

Faculty of Engineering and Information Sciences - Papers: Part A

The end bearing capacity of a rectangular steel tube can be substantially increased through local strengthening by bonding carbon fiber reinforced polymer (CFRP) plates to the webs of the steel tube. Existing studies have revealed that failure of such a strengthened tube generally occurs by debonding of the CFRP plates from the steel tube and the effectiveness of this strengthening method depends significantly on the properties of the adhesive. This paper presents a finite element (FE) study on debonding failures in such CFRP-strengthened rectangular steel tubes subjected to an end bearing load. In the proposed FE model, a bond-slip model …


Finite Element Analysis Of Consolidation Behavior Of Composite Soft Ground, S Horpibulsuk, A Chinkulkijniwat, A Cholaphatsron, J Suebsuk, M D. Liu Jan 2012

Finite Element Analysis Of Consolidation Behavior Of Composite Soft Ground, S Horpibulsuk, A Chinkulkijniwat, A Cholaphatsron, J Suebsuk, M D. Liu

Faculty of Engineering and Information Sciences - Papers: Part A

Columnar inclusion is one of the effective and widely used methods for improving engineering properties of soft clay ground. This paper investigates the consolidation behavior of composite soft clay ground using both physical model tests under an axial-symmetry condition and finite element simulations using the PLAXIS 2D program. Because the soil-cement column enhances the yield stress and stiffness of the composite ground, the composite ground is in an over-consolidated state under the applied vertical applied stresses. At this state, the rate of consolidation is rapid due to a high coefficient of consolidation. The consolidation of the composite ground is mainly …


Performance Analysis Of Distribution Networks Under High Penetration Of Solar Pv, M J. E Alam, Kashem M. Muttaqi, Darmawan Sutanto, L Elder, A Baitch Jan 2012

Performance Analysis Of Distribution Networks Under High Penetration Of Solar Pv, M J. E Alam, Kashem M. Muttaqi, Darmawan Sutanto, L Elder, A Baitch

Faculty of Engineering and Information Sciences - Papers: Part A

Integration of solar photovoltaic (PV) resources into distribution networks changes the normally expected network behaviour by injecting real power into the point of connection. Depending on the characteristics and setup of the PV inverter, reactive power could also be injected into the network. The impact will depend on the control strategy adopted for reactive power injection. Typically, solar PV units are installed at low voltage (LV) level in distribution networks. Cluster based installation of numerous PV inverters in the LV level will impact the operation of both the host LV network and the upstream medium voltage network. With random variations …


Rietveld Analysis Of The Effect Of Annealing Atmosphere On Phase Evolution Of Nanocrystalline Tio 2 Powders, M Salari, M Rezaee, A T. Chidembo, Konstantin Konstantinov, Hua-Kun Liu Jan 2012

Rietveld Analysis Of The Effect Of Annealing Atmosphere On Phase Evolution Of Nanocrystalline Tio 2 Powders, M Salari, M Rezaee, A T. Chidembo, Konstantin Konstantinov, Hua-Kun Liu

Faculty of Engineering and Information Sciences - Papers: Part A

The struclUral evolution of nanocrystaUine Ti02 was studied by X-ray diffraction (XRD) and the Rietveld refinement method (RRM). Ti02 powders were prepared by the sol-gel technique. Post annealing of as·synthesized powders in the temperature range from 500°C to 600 °C under air and argon atmospheres led to the formation of Ti02 nanoparticles with mean crystallite size in the range of 37-165 nm. based on the Rietveld refinement results. It was found that the phase structure, composition, and crystallite size of the resulting particles were dependent on not only the annealing temperature, but also the annealing atmosphere. Rietveld refinement of the …


Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo Jan 2012

Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo

Faculty of Engineering and Information Sciences - Papers: Part A

Embedded generators such as wind generators can produce observable voltage fluctuations during variable wind conditions hence flicker. The flicker produced by such intermittent and fluctuating generating sources can propagate to other parts of the distribution network while creating power quality issues in distribution feeders. This study presents a flicker emission analysis for a doubly-fed induction generator (DFIG) based wind farm and investigate the pertinent factors which influence flicker propagation and attenuation in distribution feeders. Study has shown that voltage fluctuations are significantly influenced by the attenuation characteristics of various load types (i.e. constant power, impedance and current loads) connected to …


Fairness And Capacity Analysis Of Opportunistic Feedback Protocol With Proportional Fair Or Maximum Throughput Scheduling, Hang Li, Qinghua Guo, Licai Fang, Defeng (David) Huang Jan 2012

Fairness And Capacity Analysis Of Opportunistic Feedback Protocol With Proportional Fair Or Maximum Throughput Scheduling, Hang Li, Qinghua Guo, Licai Fang, Defeng (David) Huang

Faculty of Engineering and Information Sciences - Papers: Part A

An opportunistic feedback protocol with maximum throughput (MT) scheduling has been proposed in the literature to achieve multiuser diversity for the downlink transmission of a wireless system, and its system capacity has been analyzed with the assumption that the received signal-to-noise ratios (SNRs) for the users are independent and identically distributed. In this paper, fairness and capacity performances of the opportunistic feedback protocol are analyzed for SNRs with independent but not necessarily identical distributions. In addition to MT scheduling, we also analyze the fairness and capacity performances for proportional fair (PF) scheduling. Compared with MT scheduling, numerical results demonstrate that …