Showing items 12781 - 12800 of 17083

Peeling off a nonconvex cover of an actual convex problem: Hidden convexity

- Wu, Zhiyou, Li, Duan, Zhang, Lian-Sheng, Yang, Xin-Min

  • Authors: Wu, Zhiyou , Li, Duan , Zhang, Lian-Sheng , Yang, Xin-Min
  • Date: 2007
  • Type: Text , Journal article
  • Relation: SIAM Journal on Optimization Vol. 18, no. 2 (2007), p. 507-536
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  • Description: Convexity is, without a doubt, one of the most desirable features in optimization. Many optimization problems that are nonconvex in their original settings may become convex after performing certain equivalent transformations. This paper studies the conditions for such hidden convexity. More specifically, some transformation-independent sufficient conditions have been derived for identifying hidden convexity. The derived sufficient conditions are readily verifiable for quadratic optimization problems. The global minimizer of a hidden convex programming problem can be identified using a local search algorithm. © 2007 Society for Industrial and Applied Mathematics.
  • Description: C1
  • Description: 2003005616

Physical performance tests and standards: Infantry and ADG: Report 12

- Payne, Warren, Harvey, Jack, Brotherhood, John, Knez, Wade, Ham, Daniel

  • Authors: Payne, Warren , Harvey, Jack , Brotherhood, John , Knez, Wade , Ham, Daniel
  • Date: 2007
  • Type: Text , Report
  • Relation: Defence Physical Employment Standards Project: Infantry and Airfield Defence Guards
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  • Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG).

Physical security enhancement in wireless LAN systems

- Kouhbor, Shahnaz

  • Authors: Kouhbor, Shahnaz
  • Date: 2007
  • Type: Text , Conference paper
  • Relation: Paper presented at 3rd International Conference on Intelligent Sensors, Sensor Networks and Information, ISSNIP 2007, Melbourne, Victoria : 3rd-6th December 2007 p. 733-738
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  • Description: During the planning of Wireless Local Area Network (WLAN) systems, it is important to determine the optimal number of access points (APs) in order to maximise their coverage with minimum cost. It is also essential to take proactive steps to secure their position in order to enhance the physical security of the network. In this paper we describe a mathematical model that finds the minimum number of APs for indoor buildings and places them in the area in a manner that the physical security of the network is maintained. A Global Optimisation Algorithm (AGOP) developed at the University of Ballarat is used to solve this problem. Results obtained demonstrate that the model and software are able to optimally solve the placement problem in areas that have different obstacles and number of users.
  • Description: 2003004952

Piercy's Gendered Cyborgs: Hope, Threat, and the Blurred Boundaries

- Wight, Linda

Place matters! Rural as an ‘enabling culture’ for female GPs

- Schwarz, Imogen, McDonald, John

Political aspects of innovation

- Courvisanos, Jerry

Portal-based sound propagation for first-person computer games

- Foale, Cameron, Vamplew, Peter

Position sensing of industrial robots-A survey

- Poplawski, Jaroslaw, Sultan, Ibrahim

  • Authors: Poplawski, Jaroslaw , Sultan, Ibrahim
  • Date: 2007
  • Type: Text , Journal article
  • Relation: Information Technology Journal Vol. 6, no. 1 (2007), p. 14-25
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  • Description: This study offers a comprehensive coverage for many methods, systems and applications employed for robot positioning. The scope of material found reflects the width and breadth of what has been achieved in robot positioning and forms a basis for further research into possible new designs and applications. © 2007 Asian Network for Scientific Information.
  • Description: C1
  • Description: 2003004742

Power struggle

- Jogulu, Uma, Wood, Glenice

  • Authors: Jogulu, Uma , Wood, Glenice
  • Date: 2007
  • Type: Text , Journal article
  • Relation: IET Engineering Management Vol. 17, no. 3 (2007), p. 36-37
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  • Description: A wide range of studies have been conducted to understand the concept of leadership through an analysis of characteristics and behaviors. Contemporary leadership research highlights two prominent styles of leadership that are widely exhibited by managers in organizations that are known as transactional and transformational leadership. The transactional leadership style is defined as the transaction between leaders and followers who are rewarded or disciplined based on work performance and this style of leadership depends upon the power of the leader to reinforce work standards to ensure successful completion of tasks by staff. The transformational leadership involves establishment of the leader as the role model by gaining the trust and confidence of the followers and these leaders develop their staff by empowering and instructing them to excel beyond the organizational vision and creating awareness of the direction that the followers should be heading.
  • Description: C1

Pre-apprenticeships in three key trades

- Dumbrell, Tom, Smith, Erica

  • Authors: Dumbrell, Tom , Smith, Erica
  • Date: 2007
  • Type: Text , Book
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  • Description: This report looks at whether pre-apprenticeships increase the potential supply of tradespeople, with a special focus on electrotechnology, automotive and engineering students. It found that pre-apprenticeships have been used in Australia for many years and are widely regarded as a valuable strategy for increasing the supply and quality of potential apprentices. Pre-apprenticeships are favoured by employers because they weed out unsuitable candidates and improve retention, while apprentices see them as a useful way of gaining experience in the trade.
  • Description: 2003006164

Predictors of social competence in young adolescents with craniofacial anomalies

- Shute, Rosalyn, McCarthy, Karen, Roberts, Rachel

  • Authors: Shute, Rosalyn , McCarthy, Karen , Roberts, Rachel
  • Date: 2007
  • Type: Text , Journal article
  • Relation: International Journal of Clinical and Health Psychology Vol. 7, no. 3 (2007), p. 595-613
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  • Description: This descriptive study shows the development and evaluation of a model of social competence in young adolescents with craniofacial anomalies. Craniofacial patients (N = 48, 11-14 years) completed the Social Anxiety Scale for Children, selected subscales of the Self-Perception Scale for Adolescents and the Social Support Scale for Children. Their parents completed the Child Behaviour Checklist. Facial disfigurement was independently rated. Multiple regression analyses suggested a revised model in which one aspect of social anxiety (social avoidance/distress) predicts social competence, with peer support as a mediator, while the other aspect of social anxiety (fear of negative evaluation) predicts social competence, with parental support as a mediator. Severity of facial disfigurement was not related to any psychological variable. While self-worth predicted social competence when considered alone, this relationship disappeared when the other variables were taken into account; self-worth remained closely associated with fear of negative evaluation. Although mean Child Behaviour Checklist scores were in the normal range, almost half the adolescents had psychological problems of clinical concern. The results suggest that young adolescents with craniofacial anomalies require psychological assessment regardless of degree of disfigurement. Interventions to reduce social anxiety and improve social support may be of particular value for promoting social competence. © International Journal of Clinical and Health Psychology.
  • Description: C1
  • Description: 2003005750

Predictors of transformation to myelodysplasia/acute myelogenous leukemia (MDS/AML) in severe congenital neutropenia (CN)

- Boxer, Laurence, Bolyard, Audrey, Newburger, Peter, Bonilla, Mary Ann, Kannourakis, George, Dror, Yigal, Link, Daniel, Alter, Blanche, Rosenberg, Philip, Dale, David

Prefix coding of integers with real-valued predictions using cosets

- Ali, Mortuza, Murshed, Manzur

  • Authors: Ali, Mortuza , Murshed, Manzur
  • Date: 2007
  • Type: Text , Journal article
  • Relation: IEEE Communications Letters, vol. 11, no. 10, IEEE Communications Society, p. 814-816
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  • Description: In predictive coding of integers real-valued residuals are mapped to integers before encoding, leaving room for improvement by reducing the loss due to rounding. In this paper, we propose a new prefix coding scheme where actual integer values, instead of the residuals, are encoded using cosets with real domain predictions as the side information. This novel coding scheme outperforms Golomb-based coding by reducing the rounding loss with similar computational and memory complexity.

Priorities for reducing the burden of injuries in sport : The example of Australian football

- Gabbe, Belinda, Finch, Caroline, Cameron, Peter

  • Authors: Gabbe, Belinda , Finch, Caroline , Cameron, Peter
  • Date: 2007
  • Type: Text , Journal article
  • Relation: Journal of Science and Medicine in Sport Vol. 10, no. 5 (2007), p. 273-276
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  • Description: The promotion of safe sports participation has become a public health issue due to rising obesity rates and the potential for parental concerns about safety to inhibit sports participation. The safety of Australian football and its elite game, the Australian Football League (AFL), is often the focus of media commentary. Participation in the modified version of the game (Auskick) has been shown to be safer but by the time children reach the under-15 age group, adult rules are in place and the umbrella of safety provided by modified rules is gone. Figures released recently by the AFL suggest that injury rates at the elite-level are at an historical low, but equivalent information for the more than 400,000 non-elite participants is not available. Published literature related to preventing injuries in Australian football highlights a significant knowledge gap with respect to the aetiology of injuries in non-elite participants and only a very small evidence base for prevention of injuries in this sport. Gains in reducing the public health impact of football injuries, and injury-related barriers to Australian football participation, will only come from substantial investment in large-scale trials at the non-elite level, and a co-ordinated and multidisciplinary approach to dealing with safety and injury issues across all levels of play. Active and committed collaboration of key stakeholders such as government health agencies, peak sports bodies, sports administrators, clinicians, researchers, clubs, coaches and the participants themselves will be necessary. © 2007 Sports Medicine Australia.
  • Description: C1
  • Description: 2003005774

Problem behaviours in early primary school children : Australian normative data using the strengths and difficulties questionnaire

- Hayes, Louise

  • Authors: Hayes, Louise
  • Date: 2007
  • Type: Text , Journal article
  • Relation: Australian and New Zealand Journal of Psychiatry Vol. 41, no. 3 (Mar 2007), p. 231-238
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  • Description: Objective: This study provides normative and clinical levels of problem behaviours from a large community sample of Australian early primary school children. Method: From a large community sample (n = 1928) of children aged 5 to 10 years (mean = 7.70, SD = 0.89) normative data are provided using the teacher-reported version of the Strengths and Difficulties Questionnaire (SDQ). A response rate of 88% ensures the data are representative. Results: Mean scores on total difficulties between this Australian sample and UK norms were comparable. Some differences in the clinical cut-off scores are evident in the Australian sample, and adjusted clinical cut-offs are provided. Australian teacher reports of problem behaviour revealed lower clinical levels of emotional problems. Boys had significantly greater problems than girls on the Conduct, Hyperactivity, Peer and Prosocial scales. Overall, 5.3% of boys had scores in the clinical range on four of the five subscales. Comparisons of the factor structure revealed that for boys the Peer scale has two interpretations, with two items loading with Conduct problems and associated with greater problem behaviours. For girls, conduct problems are more strongly associated with poorer prosocial skills. Conclusions: Teachers are able provide valuable predictive information on externalizing behaviours. Australian normative comparisons reveal minor variations in teacher interpretation of items. The present data is representative of the Australian community and should be used to assess behaviour difficulties in early primary school children. Future studies on older age children are required to understand the developmental progression of problem behaviours in the community.
  • Description: C1
  • Description: 2003005423

Professional accounting bodies' perceptions of ethical issues, causes of ethical failure and ethics education

- Jackling, Beverley, Cooper, Barry, Leung, Philomena, Dellaportas, Steven

  • Authors: Jackling, Beverley , Cooper, Barry , Leung, Philomena , Dellaportas, Steven
  • Date: 2007
  • Type: Text , Journal article
  • Relation: Managerial Auditing Journal Vol. 22, no. 9 (2007), p. 928-944
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  • Description: Purpose - Given the calls for increased ethics education following recent corporate collapses, this paper aims to examine the significance of ethical issues that challenge the profession and, more specifically, professional accounting bodies. Design/methodology/approach - The study assesses the perceptions via an online survey of 66 professional accounting bodies worldwide in respect of ethical issues, potential causes of ethical failure and the need for ethics education. Findings - Respondents identified a number of important challenges including conflicts of interest, earnings management and whistle-blowing. The findings also demonstrate strong support for participation in prescribing the nature of ethics education by members of professional accounting bodies. Research limitations/implications - The results of this study are based on feedback from 41 per cent of member bodies of the International Federation of Accountants (IFAC). Despite a number of follow-up reminder notices, some regions are under-represented in the responses to the survey distributed to the (then) 160 member bodies of IFAC. Geographic isolation and language limitations contributed to the failure to gain a higher response rate. Practical implications - The findings demonstrate that professional bodies support ethics education at the pre- and post-qualifying levels of education and a willingness to take an active role in promoting ethics education to their members. Originality/value - By addressing member bodies' attitudes to ethics education, this paper fills a gap in prior literature that has been restricted to addressing the attitudes of academics, students and business organisations.
  • Description: C1

Professional help-seeking among women : development and testing of a model

- Vanderhorst, Renee

  • Authors: Vanderhorst, Renee
  • Date: 2007
  • Type: Text , Thesis , Doctorate
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  • Description: Professional Doctorate of Psychology (Clinical)

Properties of strongly star shaped cones

- Morales-Silva, Daniel

  • Authors: Morales-Silva, Daniel
  • Date: 2007
  • Type: Text , Journal article
  • Relation: Pacific Journal of Optimization Vol. 3, no. 2 (2007), p. 379-386
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  • Description: In problems of vector optimization, with preferences that are not necessarily a pre-order relation, the strongly star shaped cones are very important in order to get a scalarization of these problems. In this work we present some properties of these cones and also a characterization for a special type.
  • Description: C1
  • Description: 2003004940

Public services as indispensable stepping stones to migrant women's self determination

- Bursian, Olga

  • Authors: Bursian, Olga
  • Date: 2007
  • Type: Text , Journal article
  • Relation: Practice Reflexions Vol. 2, no. 1 (2007 2007), p. 35-49
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  • Description: This paper argues that publicly funded infrastructure, or the welfare state, were indispensable in enabling a group of migrant women to exercise energetic self determination during resettlement in Melbourne between the mid 1970s to late 1990s. Even though the group of participants in my doctoral study were extraordinarily resilient, and mostly educated women, they needed the service system developed within the bi-partisan supported policy of multiculturalism which granted access to newcomers on the basis of citizenship rights. The paper unpacks the sufferings of migrants who come from communally based societies, lose their former worlds and meaningful place in society and encounter negative representations fuelled by ignorance in the Australian context. I then present the women’s detailed evidence about how the network of publicly funded services, as they existed up to the end of the 1990s in Victoria, enabled them to not only recapture their former energies, but also had life affirming reverberations for their families and the community. In contradiction to recent divisive, neo-liberal public discourses (Edgar 2001; Mendes 2003), the welfare state and the policies of multiculturalism and related programs enabled engaged citizenship and the building of vibrant and diverse civil society. Rather than being a drain on the public purse, modest government investments into programs enabled the nation to benefit from the women’s enormous industriousness. After some brief contextual information, I will present vignettes from their narratives about connecting with a variety of services. The tragically amusing dialogue with an isolated woman’s experience of poor medical practice will provide a counter balance to the discussion.

Quantification of intermarket influence on the Australian All Ordinary Index based on optimization techniques

- Tilakaratne, Chandima, Morris, Sidney, Mammadov, Musa, Hurst, Cameron