Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 6 of 6
Full-Text Articles in Entire DC Network
The Effects Of Different Regulation Systems On Television Food Advertising To Children, Bridget P. Kelly, Lesley King, Adrian Bauman, Ben J. Smith, Victoria M. Flood
The Effects Of Different Regulation Systems On Television Food Advertising To Children, Bridget P. Kelly, Lesley King, Adrian Bauman, Ben J. Smith, Victoria M. Flood
Faculty of Health and Behavioural Sciences - Papers (Archive)
Objective: The aim of this study was to model children’s potential exposure to television food advertisements under different regulatory scenarios to demonstrate the policy implications of regulatory change in Australia. Methods: Television advertising data was collected from Sydney commercial television channels from 14-20 May 2006. Extrapolating from these data, the patterns of food advertising under four regulatory scenarios were examined, including arrangements restricting the content, volume and timing of advertisements. Results: Each scenario resulted in a reduction of total and non-core food advertisements. The scenario to restrict non-core food advertisements during the major viewing period (7:00-20:30) led to the largest …
Remarks On Accessible Steady States For Some Coagulation-Fragmentation Systems, Miguel A. Herrero, Marianito R. Rodrigo
Remarks On Accessible Steady States For Some Coagulation-Fragmentation Systems, Miguel A. Herrero, Marianito R. Rodrigo
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper we consider some systems of ordinary differential equations which are related to coagulation-fragmentation processes. In particular, we obtain explicit solutions of such systems which involve certain coefficients obtained by solving a suitable algebraic recurrence relation. The coefficients are derived in two relevant cases: the high-functionality limit and the Flory-Stockmayer model. The solutions thus obtained are polydisperse (that is, is different from zero for all ) and may exhibit monotonically increasing or decreasing total mass. We also solve a monodisperse case (where is different from zero but is equal to zero for all ) in the high-functionality limit. …
Systems Dynamics Modelling Of Human And Information Aspects Of Network-Centric Configurations, Helen M. Hasan
Systems Dynamics Modelling Of Human And Information Aspects Of Network-Centric Configurations, Helen M. Hasan
Faculty of Commerce - Papers (Archive)
This paper is based on the definition of a network-centric structure as one which enables members of an organisation to create and leverage information to increase competitive advantage through the joint efforts of creative individuals and independent teams. While the technical components of this environment are enabling, the organisational and behavioural components generate value as traditionally competitive workers strive to cooperate in self-directed, distributed teams. Many organisations are now complex hybrids of hierarchical and network-centric configurations and there is a need to increase our understanding of their human and informational aspects. Due to its suitability for managing complexity without reducing …
Reliability Of Fault-Tolerant Systems With Parallel Task Processing, Gregory Levitin, Min Xie, Tieling Zhang
Reliability Of Fault-Tolerant Systems With Parallel Task Processing, Gregory Levitin, Min Xie, Tieling Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
The paper considers performance and reliability of fault-tolerant software running on a hardware system that consists of multiple processing units. The software consists of functionally equivalent but independently developed versions that start execution simultaneously. The computational complexity and reliability of different versions are different. The system completes the task execution when the outputs of a pre-specified number of versions coincide. The processing units are characterized by different availability and processing speed. It is assumed that they are able to share the computational burden perfectly and that execution of each version can be fully parallelized. The algorithm based on the universal …
The Ofdm-Idma Approach To Wireless Communication Systems, Li Ping, Qinghua Guo, Jun Tong
The Ofdm-Idma Approach To Wireless Communication Systems, Li Ping, Qinghua Guo, Jun Tong
Faculty of Engineering and Information Sciences - Papers: Part A
This article outlines the basic principles of OFDM-IDMA. Comparisons with other alternative technologies such as OFDM-CDMA and OFDMA are provided. Some attractive features of OFMD-IDMA are explained, including low-cost iterative multi-user detection, flexible rate adaptation, frequency diversity, and significant advantages regarding spectral and power efficiency. © 2007 IEEE.
On Short Forward Error-Correcting Codes For Wireless Communication Systems, Sheng Tong, Dengsheng Lin, Aleksandar Kavcic, Baoming Bai, Li Ping
On Short Forward Error-Correcting Codes For Wireless Communication Systems, Sheng Tong, Dengsheng Lin, Aleksandar Kavcic, Baoming Bai, Li Ping
Faculty of Engineering and Information Sciences - Papers: Part A
For real-time wireless communications, short forward error-correcting (FEC) codes are indispensable due to the strict delay requirement. In this paper we study the performance of short FEC codes. Reed-Solomon (RS) codes and concatenated zigzag (CZ) codes are chosen as representatives of classical algebraic codes and modern simple iterative decodable codes, respectively. Additionally, we use random binary linear codes as a baseline reference for comparison. Our main results (demonstrated by both simulation and ensemble distance spectrum analysis) are as follows: 1) Short RS codes are as good as random binary linear codes; 2) Carefully designed short low- density parity-check (LDPC) codes …