http://hdl.handle.net/10453/34 2013-05-20T20:28:53Z http://hdl.handle.net/10453/19419 Fall Detection using a Gaussian Distribution of Clustered Knowledge, Augmented Radial Basis Neural-Network, and Multilayer Perceptron Yuwono Mitchell; Su Steven; Moulton Bruce Klempous, R The rapidly increasing population of elderly people has posed a big challenge to research in fall prevention and detection. Substantial amounts of injuries, disabilities, traumas and deaths among elderly people due to falls have been reported worldwide. There is therefore a need for a reliable, simple, and affordable automatic fall detection system. This paper proposes a reliable fall detection algorithm using minimal information from a single waist worn wireless tri-axial accelerometer. The method proposed is to approach fall detection using digital signal processing and neural networks. This method includes the application of Discrete Wavelet Transform (DWT), Regrouping Particle Swarm Optimization (RegPSO), a proposed method called Gaussian Distribution of Clustered Knowledge (GCK), and an Ensemble of Classifiers using two different classifiers: Multilayer Perceptron Neural Network (MLP) and Augmented Radial Basis Neural Networks (ARBF). The proposed method has been tested on 8 healthy individuals in a home environment and yields promising result of up to 100% sensitivity on ingroup, 97.65% sensitivity on outgroup, and 99.56% specificity on Activities of Daily Living (ADL) data. 2011-01-01T00:00:00Z http://hdl.handle.net/10453/18981 Generic skills development and satisfaction with groupwork among business students: Effect of country of permanent residency Teo Stephen; Segal Naomi; Morgan Adam; Kandlbinder Peter; Wang Karen; Hingorani Anurag The purpose of this study is to examine variables explaining students' positive and negative experiences of groupwork and connect country of residence with the perception of generic skills development and self-reported satisfaction with groupwork. It also aims to examine the effect of prior training in groups from the perspective of Australian and Non-Australian permanent residency Business students. Respondents were 389 undergraduate and postgraduate Business students at an Australian metropolitan university. A path model was developed and analysed using partial least squares modeling. Students' country of residence had a significant influence on reporting of generic skill development and experience of groupwork. Self-reported improvement in generic skills after groupwork assessment was associated with reporting of fewer negative and more positive aspects of working in groups. The findings were limited by using data collected from students enrolled in one undergraduate and one postgraduate subject at the conclusion of a group assignment from one university. Future research should test the model by extending it to other universities and non-Business units. Future research should rely on a longitudinal design, where the survey is carried out at the beginning and the end of the group assessment. It is important to ensure both domestic and international students acquire generic skills through groupwork and that prior training in groupwork takes place before group assessments. The study provides empirical evidence supporting the incorporation of generic skill teaching into academic practice prior to assigning groupwork to students. 2012-01-01T00:00:00Z http://hdl.handle.net/10453/18980 Heterogeneous networks and resource acquisition of SMEs in emerging economies Wang Karen; Wang Yue; Huang Kai; Deng Jingsong It is acknowledged that social capital plays an important role in the growth of entrepreneurial firms. However, few studies have examined the contribution and function of social capital networks that contain structural holes (heterogeneous networks) in emerging economies. It is not clear how trustworthiness and behavioural commitment impact on effectiveness of these networks in obtaining resources. This study explores how heterogeneous networks characterize successful entrepreneurship of small-medium enterprises in such setting. We find that behavioural commitmentmoderates the relationship between heterogeneous networks and resource acquisition, while trustworthiness does not significantly moderate this relationship. The impact of the findings on the literature and practice in emerging economies is discussed, as is the need for future research in this domain. 2012-01-01T00:00:00Z http://hdl.handle.net/10453/18983 Conditioning domestic chickens to a magnetic anomaly Denzau S; Kuriakose D; Freire Rafael; Munro Ursula; Wiltschko Wolfgang Young domestic chicks of two strains, ISA brown layers and White Leghorn X Australorps, were trained to associate a magnetic anomaly with food. This was done by feeding them in their housing boxes from a dish placed above a small coil that produced a magnetic anomaly roughly six times as strong as the local geomagnetic field. Unrewarded tests began on day 9 after hatching. In a square arena, two corresponding coils were placed underneath two opposite corners. One coil, the control coil, was double-wrapped producing no net magnetic field, while the other in the opposite corner produced a local magnetic anomaly similar to that experienced during feeding. The chicks favoured the corner with the anomaly from day 10 after hatching onward. Both strains of chickens showed this preference, indicating that they could sense the local changes in the magnetic field. 2011-01-01T00:00:00Z