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Privacy Enhanced Data Outsourcing In The Cloud, Miao Zhou, Yi Mu, Willy Susilo, Jun Yan, Liju Dong Jan 2012

Privacy Enhanced Data Outsourcing In The Cloud, Miao Zhou, Yi Mu, Willy Susilo, Jun Yan, Liju Dong

Faculty of Informatics - Papers (Archive)

How to secure outsourcing data in cloud computing is a challenging problem, since a cloud environment cannot been considered to be trusted. The situation becomes even more challenging when outsourced data sources in a cloud environment are managed by multiple outsourcers who hold different access rights. In this paper, we introduce an efficient and novel tree-based key management scheme that allows a data source to be accessed by multiple parties who hold different rights. We ensure that the database remains secure, while some selected data sources can be securely shared with other authorized parties.


Bioregional Assessment Project: Sydney Metropolitan, Southern Rivers And Hawkesbury-Nepean Catchments: Data Collation Phase To Study The Impact Of Mining Activity And Coal Seam Gas On Environmental Assets, John Bradd, Tim Cohen, Sam Marx, Sol Buckman, Emma Burkhardt, A Clarke, Nicole Cook, Stephen Cullen, James Daley, Alexi Gavin, Ren Hu, Emma Kiekebosch-Fitt, Matt Lemcke, Andrew Lowe, Thomas Mcmahon, Luke Mcneilage, Kaitlyn O'Mara, Garth Nagle, Sam Robson, Carolyn Silveri, Joe Stammers Jan 2012

Bioregional Assessment Project: Sydney Metropolitan, Southern Rivers And Hawkesbury-Nepean Catchments: Data Collation Phase To Study The Impact Of Mining Activity And Coal Seam Gas On Environmental Assets, John Bradd, Tim Cohen, Sam Marx, Sol Buckman, Emma Burkhardt, A Clarke, Nicole Cook, Stephen Cullen, James Daley, Alexi Gavin, Ren Hu, Emma Kiekebosch-Fitt, Matt Lemcke, Andrew Lowe, Thomas Mcmahon, Luke Mcneilage, Kaitlyn O'Mara, Garth Nagle, Sam Robson, Carolyn Silveri, Joe Stammers

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

This study was commissioned by the Hawkesbury-Nepean (HNCMA), Sydney Metropolitan (SMCMA) and Southern Rivers (SRCMA) Catchment Management Authorities and undertaken by the University of Wollongong to collate existing data and to provide a preliminary assessment of the potential impacts of coal seam gas (CSG) and coal mining activities on environmental assets within the three CMA regions, where environmental assets were defined under three broad themes; water, land and biodiversity. This study formed part of the Australian Federal Government’s Department of Sustainability, Environment, Water, Population and Communities (SEWPaC) Bioregional Assessment initiative within regions potentially affected by CSG and coal mining activities. …


The Health And Development Of Children Born To Older Mothers In The United Kingdom: Observational Study Using Longitudinal Cohort Data, Alastair G. Sutcliffe, Jacqueline Barnes, Jay Belsky, Julian Gardiner, Edward Melhuish Jan 2012

The Health And Development Of Children Born To Older Mothers In The United Kingdom: Observational Study Using Longitudinal Cohort Data, Alastair G. Sutcliffe, Jacqueline Barnes, Jay Belsky, Julian Gardiner, Edward Melhuish

Faculty of Social Sciences - Papers (Archive)

Objective To assess relations between children's health and development and maternal age. Design Observational study of longitudinal cohorts. Setting Millennium Cohort Study (a random sample of UK children) and the National Evaluation of Sure Start study (a random sample of children in deprived areas in England), 2001 to 2007. Participants 31 257 children at age 9 months, 24 781 children at age 3 years, and 22 504 at age 5 years. Main outcome measures Childhood unintentional injuries and hospital admissions (aged 9 months, 3 years, and 5 years), immunisations (aged 9 months and 3 years), body mass index, language development, …


Health Workforce Australia Expanded Scopes Of Practice Program: Compendium Of Data Requirements And Evaluation Tools, Cristina J. Thompson, Karen Quinsey, Darcy Morris, Robert Gordon, Kathryn E. Williams, Patrea R. Andersen, Milena Snoek, Simon Eckermann, Kathy Eagar Jan 2012

Health Workforce Australia Expanded Scopes Of Practice Program: Compendium Of Data Requirements And Evaluation Tools, Cristina J. Thompson, Karen Quinsey, Darcy Morris, Robert Gordon, Kathryn E. Williams, Patrea R. Andersen, Milena Snoek, Simon Eckermann, Kathy Eagar

Australian Health Services Research Institute

The evaluation of the Expanded Scopes of Practice (ESOP) Program is structured to include data collection at the local; sub-project and national leve l. Local projects are responsible for conducting their own project evaluation within the overarching framework of the national evaluation. This means that projects will collect a range of data to support evaluation activities. In some cases this data will be analysed locally and for other evaluation activiti es it will be analysed by the NET. The National Evaluation Team will not finalise the sub-project data analyses until the first quarter of 2014.


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 …


Double Space-Time Transmit Diversity For Very High Data Rate Mb-Ofdm Uwb Systems, Ngoc P. Le, Le C. Tran, Farzad Safaei Jan 2012

Double Space-Time Transmit Diversity For Very High Data Rate Mb-Ofdm Uwb Systems, Ngoc P. Le, Le C. Tran, Farzad Safaei

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, we investigate a multiband-orthogonal frequency division multiplexing ultra-wideband (MB-OFDM UWB) system with very high data rates (VHDR) of several gigabits per second (Gbps). We propose a DSTTD-based VHDR MB-OFDM UWB system by incorporating a double space-time transmit diversity (DSTTD) scheme into the conventional MB-OFDM UWB system. At the receiver, an efficient soft-demapper that takes into consideration the noise enhancement due to a zero-forcing equalization is developed. Numerical simulations of the proposed system at a very high data rate of 2.Gbps over the IEEE 802.15.3a channel models are implemented. The simulation results show that this system could achieve …


The Algorithm Of Equal Acceptance Region For Detecting Copy Number Alterations: Applications To Next-Generation Sequencing Data, Yan-Xia Lin Jan 2012

The Algorithm Of Equal Acceptance Region For Detecting Copy Number Alterations: Applications To Next-Generation Sequencing Data, Yan-Xia Lin

Faculty of Engineering and Information Sciences - Papers: Part A

The information of copy number alterations (gains and losses) in tumour genomes can be used to discovery cancer-causing genes. The estimate of copy number can be obtained from the estimate copy number ratio. The higher the depth of underlying sequencing data, the more accurate the estimate of copy number ratio. At the same time, the higher depth of a sequencing data used in copy number analysis, the more cost of data analysis. To develop a method for identifying a necessary depth of sequencing data for copy number analysis before test data are produced is of interest. In this paper, we …


Estimation Of Regression Parameters From Noise Multiplied Data, Yan-Xia Lin, Phillip Wise Jan 2012

Estimation Of Regression Parameters From Noise Multiplied Data, Yan-Xia Lin, Phillip Wise

Faculty of Engineering and Information Sciences - Papers: Part A

This paper considers the scenario that all data entries in a confidentialised unit record file were masked by multiplicative noises, regardless of whether unit records are sensitive or not and regardless of whether the masked variables are dependent or independent variables in the underlying regression analysis. A technique is introduced in this paper to show how to estimate parameters in a regression model, which is originally fitted by unmasked data, based on masked data. Several simulation studies and a real-life data application are presented.


Robust Sampled-Data Control Of Structures Subject To Parameter Uncertainties And Actuator Saturation, Haiping Du, Nong Zhang, Bijan Samali, Fazel Naghdy Jan 2012

Robust Sampled-Data Control Of Structures Subject To Parameter Uncertainties And Actuator Saturation, Haiping Du, Nong Zhang, Bijan Samali, Fazel Naghdy

Faculty of Engineering and Information Sciences - Papers: Part A

"This paper presents a robust sampled-data controller design approach for vibration attenuation of civil structures considering parameter uncertainties and actuator saturation. The parameter uncertainties belong to polytopic form and are assumed to be the variations of the structural stiffness and damping. Regarding the uncertain sampling problem encountered in real world applications, the sampling period designed for the controller is allowed to be variable within a given bound. In order to obtain reduced peak response quantities, the energy-to-peak performance used to describe the peak values of the control output under all possible energy-bounded disturbances is optimised. The robust sampled-data state feedback …


Biclustering: Overcoming Data Dimensionality Problems In Market Segmentation, Sara Dolnicar, Sebastian Kaiser, Katie Lazarevski, Friedrich Leisch Jan 2012

Biclustering: Overcoming Data Dimensionality Problems In Market Segmentation, Sara Dolnicar, Sebastian Kaiser, Katie Lazarevski, Friedrich Leisch

Faculty of Commerce - Papers (Archive)

Data-driven market segmentation is a popular and widely used segmentation method in tourism. It aims to identify market segments among tourists who are similar to each other, thus allowing a targeted marketing mix to be developed. Typically data used to segment tourists are characterized by small numbers of respondents and large numbers of survey questions. Small samples and numerous questions cause serious methodological problems that have typically been addressed by using factorcluster analysis to reduce the dimensionality of data. Recently, factor-cluster analysis has been shown as an unacceptable solution to the problem of high data dimensionality in segmentation. In this …


A Data Envelopment Analysis Model For Selecting Suppliers In The Presence Of Both Dual-Role Factors And Non-Discretionary Inputs, Abdollah Noorizadeh, Mahdi Mahdiloo, Reza Farzipoor Saen Jan 2012

A Data Envelopment Analysis Model For Selecting Suppliers In The Presence Of Both Dual-Role Factors And Non-Discretionary Inputs, Abdollah Noorizadeh, Mahdi Mahdiloo, Reza Farzipoor Saen

Sydney Business School - Papers

Supplier selection is the strategy adopted by the manufacturer, to evaluate and select suppliers, which can fulfil the requirements of the manufacturer. To this end, data envelopment analysis (DEA), as a multiple criteria decision-making tool, has been applied for several times. However, conventional DEA models cannot simultaneously consider dual-role and non-discretionary factors. The objective of this paper is to propose a DEA model for ranking suppliers in the presence of both dual-role factors and non-discretionary inputs. A numerical example demonstrates the application of the proposed model. 2012 Inderscience Enterprises Ltd.


Validation Of Iasi Forli Carbon Monoxide Retrievals Using Ftir Data From Ndacc, T Kerzenmacher, B Dils, N Kumps, T Blumenstock, C Clerbaux, P F. Coheur, P Demoulin, Omaira Garcia, M George, David W. Griffith, F Hase, J Hadji-Lazaro, D Hurtmans, Nicholas B. Jones, E Mahieu, Justus Notholt, Clare Paton-Walsh, U Raffalski, T Ridder, M Schneider, C Servais, M De Maziere Jan 2012

Validation Of Iasi Forli Carbon Monoxide Retrievals Using Ftir Data From Ndacc, T Kerzenmacher, B Dils, N Kumps, T Blumenstock, C Clerbaux, P F. Coheur, P Demoulin, Omaira Garcia, M George, David W. Griffith, F Hase, J Hadji-Lazaro, D Hurtmans, Nicholas B. Jones, E Mahieu, Justus Notholt, Clare Paton-Walsh, U Raffalski, T Ridder, M Schneider, C Servais, M De Maziere

Faculty of Science - Papers (Archive)

Carbon monoxide (CO) is retrieved daily and globally from space-borne IASI radiance spectra using the Fast Optimal Retrievals on Layers for IASI (FORLI) software developed at the Universit´e Libre de Bruxelles (ULB). The IASI CO total column product for 2008 from the most recent FORLI retrieval version (20100815) is evaluated using correlative CO profile products retrieved from groundbased solar absorption Fourier transform infrared (FTIR) observations at the following FTIR spectrometer sites from the Network for the Detection of Atmospheric Composition Change (NDACC): Ny-A° lesund, Kiruna, Bremen, Jungfraujoch, Iza˜na and Wollongong. In order to have good statistics for the comparisons, we …


The Acos Co2 Retrieval Algorithm - Part Ii: Global Xco2 Data Characterization, D Crisp, B Fisher, C O'Dell, C Frankenberg, R Basilio, H Bosch, L R. Brown, R Castano, B Connor, N M. Deutscher, A Eldering, D Griffith, M Gunson, A Kuze, L Mandrake, J Mcduffie, J Messerschmidt, C E. Miller, I Morino, V Natraj, J Notholt, D M. O'Brien, F Oyafuso, I Polonsky, J Robinson, R Salawitch, V Sherlock, M Smyth, H Suto, T E. Taylor, D R. Thompson, P O. Wennberg, D Wunch, Y L. Yung Jan 2012

The Acos Co2 Retrieval Algorithm - Part Ii: Global Xco2 Data Characterization, D Crisp, B Fisher, C O'Dell, C Frankenberg, R Basilio, H Bosch, L R. Brown, R Castano, B Connor, N M. Deutscher, A Eldering, D Griffith, M Gunson, A Kuze, L Mandrake, J Mcduffie, J Messerschmidt, C E. Miller, I Morino, V Natraj, J Notholt, D M. O'Brien, F Oyafuso, I Polonsky, J Robinson, R Salawitch, V Sherlock, M Smyth, H Suto, T E. Taylor, D R. Thompson, P O. Wennberg, D Wunch, Y L. Yung

Faculty of Science - Papers (Archive)

Here, we report preliminary estimates of the column averaged carbon dioxide (CO2) dry air mole fraction, XCO2, retrieved from spectra recorded over land by the Greenhouse gases Observing Satellite, GOSAT (nicknamed "Ibuki"), using retrieval methods originally developed for the NASA Orbiting Carbon Observatory (OCO) mission. After screening for clouds and other known error sources, these retrievals reproduce much of the expected structure in the global XCO2 field, including its variation with latitude and season. However, low yields of retrieved XCO2 over persistently cloudy areas and ice covered surfaces at high latitudes limit the coverage of some geographic regions, even on …


A Comparison Of Spatially Explicit And Classic Regression Modelling Of Live Coral Cover Using Hyperspectral Remote-Sensing Data In The Al Wajh Lagoon, Red Sea, S Hamylton Jan 2012

A Comparison Of Spatially Explicit And Classic Regression Modelling Of Live Coral Cover Using Hyperspectral Remote-Sensing Data In The Al Wajh Lagoon, Red Sea, S Hamylton

Faculty of Science - Papers (Archive)

Live coral is a key component of the Al Wajh marine reserve in the Red Sea. The management of this reserve is dependent on a sound understanding of the existing spatial distribution of live coral cover and the environmental factors influencing live coral at the landscape scale. This study uses remote-sensing techniques to develop ordinary least squares and spatially lagged autoregressive explanatory models of the distribution of live coral cover inside the Al Wajh lagoon, Saudi Arabia. Live coral was modelled as a response to environmental controls such as water depth, the concentration of suspended sediment in the water column …


Spatial Modelling Of Benthic Cover Using Remote Sensing Data In The Aldabra Lagoon, Western Indian Ocean, Sarah Hamylton, Tom Spencer, A Hagan Jan 2012

Spatial Modelling Of Benthic Cover Using Remote Sensing Data In The Aldabra Lagoon, Western Indian Ocean, Sarah Hamylton, Tom Spencer, A Hagan

Faculty of Science - Papers (Archive)

Spatially explicit ecological modelling was used to predict the distribution of 4 benthic components (live coral, carbonate sand, macroalgae and dead coral) inside the Aldabra lagoon, southern Seychelles, western Indian Ocean. Both classic ordinary least-squares and spatial autoregression techniques were carried out on a field data set of 774 spatially referenced records and 3 satellite remote sensing images to define an empirical relationship between local environmental conditions (water depth and water level variation) and benthic cover. This relationship was then used to generate a synoptic model of the spatial cover and distribution of each benthic component at the landscape (i.e. …


The Smart Way To Manage Research Data, Craig Napier, Despina Clancy, Tim Davies, Katie Elcombe Jan 2012

The Smart Way To Manage Research Data, Craig Napier, Despina Clancy, Tim Davies, Katie Elcombe

SMART Infrastructure Facility - Papers

The University of Wollongongs' $62 million SMART (Simulation, Modelling, Analysis, Research, Teaching) Infrastructure Facility will become a research and development powerhouse with an unprecedented level of impact within the broader infrastructure sector nationally and overseas [1]. With a vision to be a world class intellectual leader and educator in 'integrated' infrastructure planning and management and the capacity to host 200 PhD students, comprising 30 integrated research laboratories, data demands and volume are increasing exponetially.


Development Of A Spatial Data Infrastructure For Coastal Management In The Amirante Islands, Seychelles, Sarah M. Hamylton, Justin Prosper Jan 2012

Development Of A Spatial Data Infrastructure For Coastal Management In The Amirante Islands, Seychelles, Sarah M. Hamylton, Justin Prosper

Faculty of Science - Papers (Archive)

Spatial data infrastructures play a key role in coastal management decision making in the Seychelles. This paper describes four components of a web-based spatial data infrastructure that were developed to facilitate coastal management of the Amirante Islands in the Seychelles. The four components include: (i) the institutional arrangement for using spatial data effectively to address local management challenges, (ii) the production of island habitat maps from remotely sensed data, (iii) the tasks undertaken for promoting access to and use of this spatial data, and (iv) an example of how this data is used for a specific coastal management application in …


Evolutionary Algorithm For Water Storage Forecasting Response To Climate Change With Small Data Sets: The Wolonghu Wetland, China, Qingwei Ni, Li Wang, Binghui Zheng, Muttucumaru Sivakumar Jan 2012

Evolutionary Algorithm For Water Storage Forecasting Response To Climate Change With Small Data Sets: The Wolonghu Wetland, China, Qingwei Ni, Li Wang, Binghui Zheng, Muttucumaru Sivakumar

Faculty of Engineering - Papers (Archive)

"A novel genetic programming (GP) technique, a new method of evolutionary algorithms, was applied to a small data set to predict the water storage of Wolonghu wetland in response to the climate change in the northeastern part of China. Fourteen years (1993-2006) of annual water storage and climatic data of the wetland were used for model training and testing. Results of simulations and predictions illustrate a good fit between calculated water storage and observed values (mean absolute percent error = 9.47, r = 0.99). By comparison, a multilayer perceptron method (a popular artificial neural network model) and Grey theory model …


Application Of Main Flow Data In The Determination Of Boundary Shear Stress In Smooth Closed Ducts, Yu Han, Shu-Qing Yang, Nadeesha Dharmasiri Jan 2012

Application Of Main Flow Data In The Determination Of Boundary Shear Stress In Smooth Closed Ducts, Yu Han, Shu-Qing Yang, Nadeesha Dharmasiri

Faculty of Engineering - Papers (Archive)

Boundary shear stress plays an important role in momentum and mass transfers, but it is very difficult to determine experimentally. This paper develops a new method which can evaluate the boundary shear stress using the main flow data based on Momentum Balance Method (MBM). A theoretical relationship between the boundary shear stress and parameters of main flow region is established. The obtained results from MBM agree well with other methods, indicating that the new method is reasonable and reliable. The significant contribution of MBM is that the local boundary shear stress accurately and quickly can be determined by application of …


Underground Coal Mine Delay Data Analysis System, Ernest Y. Baafi, Ian Porter Jan 2012

Underground Coal Mine Delay Data Analysis System, Ernest Y. Baafi, Ian Porter

Faculty of Engineering and Information Sciences - Papers: Part A

Due to the high levels of uncertainty in underground coal mining operations, delays occur regularly which inadvertently reduce the utilisation of mining equipment. In most coal mines delay data is primarily sourced from shift reports, machine monitoring and production systems. The recording process is initiated commonly at the end of a shift to ensure the correct information is recorded for the managerial decision process. An issue that the Australian coal industry faces is the lack of a standardised delay recording process and delay classification system. Tools used within the industry to analyse delay data are mostly mine specific and offer …


The Impact Of Cannabis Use On Cognitive Functioning In Patients With Schizophrenia: A Meta-Analysis Of Existing Findings And New Data In A First-Episode Sample, Murat Yücel, Emre Bora, Daniel I. Lubman, Nadia Solowij, Warrick J. Brewer, Sue M. Cotton, Phillipe Conus, Michael J. Takagi, Alex Fornito, Stephen J. Wood, Patrick D. Mcgorry, Christos Pantelis Jan 2012

The Impact Of Cannabis Use On Cognitive Functioning In Patients With Schizophrenia: A Meta-Analysis Of Existing Findings And New Data In A First-Episode Sample, Murat Yücel, Emre Bora, Daniel I. Lubman, Nadia Solowij, Warrick J. Brewer, Sue M. Cotton, Phillipe Conus, Michael J. Takagi, Alex Fornito, Stephen J. Wood, Patrick D. Mcgorry, Christos Pantelis

Faculty of Health and Behavioural Sciences - Papers (Archive)

Cannabis use is highly prevalent among people with schizophrenia, and coupled with impaired cognition, is thought to heighten the risk of illness onset. However, while heavy cannabis use has been associated with cognitive deficits in long-term users, studies among patients with schizophrenia have been contradictory. This article consists of 2 studies. In Study I, a meta-analysis of 10 studies comprising 572 patients with established schizophrenia (with and without comorbid cannabis use) was conducted. Patients with a history of cannabis use were found to have superior neuropsychological functioning. This finding was largely driven by studies that included patients with a lifetime …


Data Driven Encoding Of Structures And Link Predictions In Large Xml Document Collections, M Hagenbuchner, A C. Tsoi, M Kc, Shujia Zhang Jan 2012

Data Driven Encoding Of Structures And Link Predictions In Large Xml Document Collections, M Hagenbuchner, A C. Tsoi, M Kc, Shujia Zhang

Faculty of Engineering and Information Sciences - Papers: Part A

In recent years there have been some significant research towards the ability of processing related data, particularly the relatedness among atomic elements in a structure with those in another structure. A number of approaches have been developed with various degrees of success. This chapter provides an overview of machine learning approaches for the encoding of related atomic elements in one structure with those in other structures. The chapter briefly reviews a number of unsupervised approaches for such data structures which can be used for solving generic classification, regression, and clustering problems. We will apply this approach to a particularly interesting …


Analysis Of Voltage Quality Data From Smart Meters, P K. C Wong, R A. Barr, A Kalam Jan 2012

Analysis Of Voltage Quality Data From Smart Meters, P K. C Wong, R A. Barr, A Kalam

Faculty of Engineering and Information Sciences - Papers: Part A

Initial analysis of voltage quality information collected from smart meters at premise level is presented. The information reveals instances of over and under voltage at some consumer premises. This revelation means supply authorities now have an obligation to rectify their supply voltages in accordance with codes and regulations. The analysis provides the foundation for future research work to identify effective solutions to the observed over and under voltage problems in the supply network. © 2012 Institut Teknologi Sepulul.


Very High Data Rate Mb-Ofdm Uwb Systems With Transmit Diversity Techniques, Ngoc Phuc Le, Le Chung Tran, Farzad Safaei Jan 2012

Very High Data Rate Mb-Ofdm Uwb Systems With Transmit Diversity Techniques, Ngoc Phuc Le, Le Chung Tran, Farzad Safaei

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, the application of space time block codes in a very high data rate multiband-OFDM ultra-wideband (VHDR MB-OFDM UWB) system, where the Modified Dual Carrier Modulation (MDCM) scheme and Low Density Parity Check codes are deployed, is investigated. First, we present a new table-based mapping approach and derive soft-demapping expressions for the MDCM scheme. We then propose a space-time-frequency coded VHDR MB-OFDM UWB system by incorporating space time block codes into the conventional VHDR MB-OFDM UWB system. Numerical simulations of the system supporting a data rate of 1Gbps over the IEEE 802.15.3a channel models are implemented. The simulation …


Big Data As A Strategic Enabler Of Superior Emergency Service Management: Lessons From The New South Wales State Emergency Service, Samuel Fosso Wamba, Andrew Edwards, Rajeev Sharma Jan 2012

Big Data As A Strategic Enabler Of Superior Emergency Service Management: Lessons From The New South Wales State Emergency Service, Samuel Fosso Wamba, Andrew Edwards, Rajeev Sharma

Faculty of Business - Papers (Archive)

A unique form of organization that has not received much attention is the emergency services organization, which is tasked with responding to crises and disasters such as floods, fires, hurricanes, tsunamis, and other natural and man-made disasters. Effective responses in such situations are reliant on the availability of archived information as well as on the effective real-time integration and utilization of data coming from various channels including sensors, satellites, social media feeds, photos, video and cell phone GPS signals or 'Big Data' (IBM 2012; Rich 2012). The effective management of these events also requires the collaboration and coordination of a …


Small Area Estimation In Practice An Applocation To Agricultural Business Survey Data, Nikos Tzavidis, Raymond L. Chambers, Nicola Salvati, Hukum Chandra Jan 2012

Small Area Estimation In Practice An Applocation To Agricultural Business Survey Data, Nikos Tzavidis, Raymond L. Chambers, Nicola Salvati, Hukum Chandra

Faculty of Engineering and Information Sciences - Papers: Part A

This paper describes an application of small area estimation (SAbl to agricultural business survey data. Both well known small area estimators, such as the empirical best linear unbiased predictor (EBLUP), and more recently proposed small area estimators, for example, tile M-quanlile, the robust EBLUP aml!he Model Ansed Direct estimators arc considered. Mean squared error estimation is discussed. Using a real agricultural business survey dataset, we place emphasis on model diagnostics for specifying the small area working model, on diagnostic measures for validating the reliability of direct and indirect (modelbased) small area e.~timators i1nd on providing practical guidelines to the prospective …