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Articles 31 - 41 of 41
Full-Text Articles in Engineering
Regional Differences In Pain Threshold And Tolerance Of The Transtibial Residual Limb: Including The Effects Of Age And Interface Material, Winson Lee, Ming Zhang, Arthur F. Mak
Regional Differences In Pain Threshold And Tolerance Of The Transtibial Residual Limb: Including The Effects Of Age And Interface Material, Winson Lee, Ming Zhang, Arthur F. Mak
Faculty of Engineering and Information Sciences - Papers: Part A
OBJECTIVES: To compare the pain threshold (the minimum pressure inducing pain) and pain tolerance (the maximum tolerable pressure) of different regions of the residual limbs of amputees by the indentation method and to evaluate the interface pressure distribution and distortion of the skin surface on indentation by finite element (FE) analysis. DESIGN: Crossover trial. SETTING: Rehabilitation engineering center. PARTICIPANTS: Eight transtibial amputees for indentation test and 1 for FE analysis. INTERVENTIONS: The load applied to the residual limbs using a Pelite or polypropylene indenter attached to a force transducer was increased until subjects could no longer tolerate the load. An …
Dynamic Modeling And Simulation Of A Multi Effect Humidification-Dehumidification Desalination Unit, Mohammed I. Sohel, B Dawoud
Dynamic Modeling And Simulation Of A Multi Effect Humidification-Dehumidification Desalination Unit, Mohammed I. Sohel, B Dawoud
Faculty of Engineering and Information Sciences - Papers: Part A
Recently solar distillation using Multi Effect Humidification-dehumidification (MEH) cycle is receiving special attention. In this communication detailed models of MEH are presented that take into account most of the dynamic behavior with reasonable accuracy. Using these models simulation was carried out and the results of simulation were discussed in this paper. To find out the competence of the newly developed models, some of the simulation results were compared with the available experimental data in the literature. It turned out that the result of simulation give a very good agreement with the experimental data. The maximum deviation between simulation and experimental …
Dynamic Channel Allocation For Mobile Cellular Systems Using A Control Theoretical Approach, Yaya Wei, Chuang Lin, Raad Raad, Fengyuan Ren
Dynamic Channel Allocation For Mobile Cellular Systems Using A Control Theoretical Approach, Yaya Wei, Chuang Lin, Raad Raad, Fengyuan Ren
Faculty of Engineering and Information Sciences - Papers: Part A
The guard channel scheme in wireless mobile networks has attracted and is still drawing research interest owing to easy implementation and flexible control. Dynamic guard channel schemes have already been proposed in the literature to adapt to varying traffic load. This paper presents a novel control-theoretic approach to dynamically reserve guard channels called PI-Guard Channel (PI-GC) controller that maintains the handoff blocking probability (HBP) to a predefined value; while it still improves the channel resource utilization.
Using Wireless Sensors As Selection Devices For A Multimedia Guidebook Scenario, Montserrat Ros, Matthew D'Souza, Michael Chan, Konstanty Bialkowski, Adam Postula, Neil Bergmann, Andras Toth
Using Wireless Sensors As Selection Devices For A Multimedia Guidebook Scenario, Montserrat Ros, Matthew D'Souza, Michael Chan, Konstanty Bialkowski, Adam Postula, Neil Bergmann, Andras Toth
Faculty of Engineering and Information Sciences - Papers: Part A
This paper describes the implementation of a wireless sensor network for a multimedia guidebook scenario incorporating a pointer-sensor system for the selection of locality-aware information. An Information Point Station Network (IPSN) was developed and consists of several Information Point Stations (IPSs) placed at locations of significance, with access to information items on a centralized server. In the multimedia guidebook scenario, a user selects a particular information item to view, either by way of a menu system appearing on their mobile computing device (MCD) or a more intuitive pointer-sensor system as described in this paper. Laser sensors are placed next to …
A Bluetooth Wireless Network Infrastructure For Multimedia Guidebooks On Mobile Computing Devices, Matthew D'Souza, Montserrat Ros, Adam Postula, Neil Bergmann
A Bluetooth Wireless Network Infrastructure For Multimedia Guidebooks On Mobile Computing Devices, Matthew D'Souza, Montserrat Ros, Adam Postula, Neil Bergmann
Faculty of Engineering and Information Sciences - Papers: Part A
This paper describes the implementation of a Bluetooth Village Guide Book (VGB) scenario for use in the Kelvin Grove Urban Village located in Brisbane, Australia. An Information Point Station Network (IPSN) was developed, along with software for two types of mobile computing devices. The implementation consists of several Information Point Stations (IPSs) placed at locations of significance, with access to information items on a centralized server. Once registered, the user is given the opportunity to experience context-aware information on demand and in various multimedia formats. These information items are selected by the user, either by way of a menu system …
Some Analytical Solutions For Problems Involving Highly Frictional Granular Materials, Ngamta Thamwattana
Some Analytical Solutions For Problems Involving Highly Frictional Granular Materials, Ngamta Thamwattana
Faculty of Engineering and Information Sciences - Papers: Part A
Published abstract of thesis submitted to The University of Wollongong, August 2004. Full thesis can be found at http://ro.uow.edu.au/theses/239.
An Alexsandrov Type Theorem For K-Convex Functions, Nirmalendu Chaudhuri, Neil Trudinger
An Alexsandrov Type Theorem For K-Convex Functions, Nirmalendu Chaudhuri, Neil Trudinger
Faculty of Engineering and Information Sciences - Papers: Part A
In this note we show that k-convex functions on Rn are twice differentiable almost everywhere for every positive integer k > n/2. This generalises Alexsandrov's classical theorem for convex functions.
Subquotients Of Hecke C*-Algebras, Nathan Brownlowe, Nadia Larsen, Ian Putnam, Iain Raeburn
Subquotients Of Hecke C*-Algebras, Nathan Brownlowe, Nadia Larsen, Ian Putnam, Iain Raeburn
Faculty of Engineering and Information Sciences - Papers: Part A
We realize the Hecke C*-algebra CQ of Bost and Connes as a direct limit of Hecke C*-algebras which are semigroup crossed products by NF, for F a finite set of primes. For each approximating Hecke C*-algebra we describe a composition series of ideals. In all cases there is a large type I ideal and a commutative quotient, and the intermediate subquotients are direct sums of simple C*-algebras. We can describe the simple summands as ordinary crossed products by actions of ZS for S a finite set of primes. …
Atomic Observations Of Warm Rolled Low Carbon Steels Alloyed With Cr And P, E V. Pereloma, M K. Miller
Atomic Observations Of Warm Rolled Low Carbon Steels Alloyed With Cr And P, E V. Pereloma, M K. Miller
Faculty of Engineering and Information Sciences - Papers: Part A
Extended abstract of a paper presented at Microscopy and Microanalysis 2005 in Honolulu, Hawaii, USA, July 31--August 4, 2005
Infrared-Active Phonons Of Homn/Sub 1-X/Co/Sub X/O/Sub 3/ (X = 0-0.8), Feng Gao, Xiaolin Wang, M Farhoudi, R A. Lewis, Shi Xue Dou
Infrared-Active Phonons Of Homn/Sub 1-X/Co/Sub X/O/Sub 3/ (X = 0-0.8), Feng Gao, Xiaolin Wang, M Farhoudi, R A. Lewis, Shi Xue Dou
Faculty of Engineering and Information Sciences - Papers: Part A
Polycrystalline HoMn/sub 1-x/Co/sub x/O/sub 3/ was synthesized by solid-state reaction. The infrared active phonons of the samples were investigated. The infrared transmission spectra of the sample at x = 0-0.8 doping level was also measured at room temperature. Also, X-ray diffraction (XRD) was used to analyze the crystal structure of the samples.
A Quasi-Dynamic Nonlinear Finite Element Model To Investigate Prosthetic Interface Stresses During Walking For Trans-Tibial Amputees, Xiaohong Jia, Ming Zhang, Xiaobing Li, Winson Lee
A Quasi-Dynamic Nonlinear Finite Element Model To Investigate Prosthetic Interface Stresses During Walking For Trans-Tibial Amputees, Xiaohong Jia, Ming Zhang, Xiaobing Li, Winson Lee
Faculty of Engineering and Information Sciences - Papers: Part A
Background. To predict the interface pressure between residual limb and prosthetic socket for trans-tibial amputees during walking. Methods. A quasi-dynamic finite element model was built based on the actual geometry of residual limb, internal bones and socket liner. To simulate the friction/slip boundary conditions between the skin and liner, automated surface-to-surface contact was used. Besides variable external loads and material inertia, the coupling between the large rigid displacement of knee joint and small elastic deformation of residual limb and prosthetic components were also considered. Results. Interface pressure distribution was found to have the same profile during walking. The high pressures …