On self-propagating methodological flaws in performance normalization for strength and power sports

Performance in strength and power sports is greatly affected by a variety of anthropometric factors. The goal of performance normalization is to factor out the effects of confounding factors and compute a canonical (normalized) performance measure from the observed absolute performance. Performance normalization is applied in the ranking of elite athletes, as well as in the early stages of youth talent selection. Consequently, it is crucial that the process is principled and fair. The corpus of previous work on this topic, which is significant, is uniform in the methodology adopted. Performance normalization is universally reduced to a regression task: the collected performance data are used to fit a regression function that is then used to scale future performances. The present article demonstrates that this approach is fundamentally flawed. It inherently creates a bias that unfairly penalizes athletes with certain allometric characteristics, and, by virtue of its adoption in the ranking and selection of elite athletes, propagates and strengthens this bias over time. The main flaws are shown to originate in the criteria for selecting the data used for regression, as well as in the manner in which the regression model is applied in normalization. This analysis brings into light the aforesaid methodological flaws and motivates further work on the development of principled methods, the foundations of which are also laid out in this work.

Intrinsic tensile properties of cocoon silk fibres can be estimated by removing flaws through repeated tensile tests

 ilk fibres from silkworm cocoons have lower strength than spider silk and have received less attention as a source of high-performance fibres. In this work, we have used an innovative procedure to eliminate the flaws gradually of a single fibre specimen by retesting the unbroken portion of the fibre, after each fracture test. This was done multiple times so that the final test may provide the intrinsic fibre strength. During each retest, the fibre specimen began to yield once the failure load of the preceding test was exceeded. For each fibre specimen, a composite curve was constructed from multiple tests. The composite curves and analysis show that strengths of mass-produced Muga and Eri cocoon silk fibres increased from 446 to 618 MPa and from 337 to 452 MPa, respectively. Similarly, their toughness increased from 84 to 136 MJ m(-3) and from 61 to 104 MJ m(-3), respectively. Composite plots produced significantly less inter-specimen variations compared to values from single tests. The fibres with reduced flaws as a result of retests in the tested section have a tensile strength and toughness comparable to naturally spun dragline spider silk with a reported strength of 574 MPa and toughness of 91-158 MJ m(-3), which is used as a benchmark for developing high-performance fibres. This retesting approach is likely to provide useful insights into discrete flaw distributions and intrinsic mechanical properties of other fatigue-resistant materials.

Impact of the new business tax system (alienation of personal services income) Act 2000

The implications of categorising income as "personal services income" and the actual meaning of this term have been marked with uncertainty. The Commissioner of Taxation has long asserted that "personal services income" inherently may not be derived by an entity other than the person whose exertions produce the income. In Liedig v FCT (1994) 28 ATR 141, however, Hill J held that in the absence of a specific legislative provision, there was no basis for the Commissioner's doctrine. The specific legislative measures Hill J required were put in place through the New Business Tax System (Alienation of Personal Services Income) Act 2000. In certain circumstances this Act prevents interposed entities from deriving personal services income. Such payments are attributed instead to the individual who performs the services.

It will also be seen, however, that these provisions do not apply to entities that are conducting a "personal services business". It is submitted that the combined effect of, inter alia, the Act's definition of "personal services income" and "personal services business" is to give the Act a narrower scope than the Commissioner's personal services doctrine. Moreover, it will be submitted that the statutory definition of personal services income also suffers from the same flaws that Hill J identified as relevant to the Commissioner's personal services doctrine.

Closer settlement in the Western District of Victoria: a case study in Australian land use policy, 1898-1914

The promotion of closer settlement in the Australian state of Victoria between 1898 and 1914 was viewed as a panacea to many of the problems that beset the state. The region known as the Western District of Victoria was seen as particularly suitable for the application of land re-settlement policy. The study of this region highlights several important features of the closer settlement experiment in Victoria. First, it illustrates how the basic principles of closer settlement were used to further the interests of particular groups. Second, it highlights the flaws in foundations of the Closer Settlement Act which impacted on the settlers chances of success. And thirdly it points to the disastrous implications of policy implementation that paid little attention to the geographical and economic parameters governing the outcome of farming enterprises.

Reflections on some recent corporate governance reforms in Germany. A transformation of the German aktienrecht?

Focuses on the German law reform relating to public corporations. Flaws to the German system of corporate governance; Advantages of comparative corporate governance research; Features of the German Corporate Governance Code.

Penetration testing professional ethics : a conceptual model and taxonomy

In an environment where commercial software is continually patched to correct security flaws, penetration testing can provide organisations with a realistic assessment of their security posture. Penetration testing uses the same principles as criminal hackers to penetrate corporate networks and thereby verify the presence of software vulnerabilities. Network administrators can use the results of a penetration test to correct flaws and improve overall security. The use of hacking techniques, however, raises several ethical questions that centre on the integrity of the tester to maintain professional distance and uphold the profession. This paper discusses the ethics of penetration testing and presents our conceptual model and revised taxonomy.

Correct weight? analysing Australian football through a derivative global or cultural cringe model

The application of a 'global' model, in practice usually British or American, and generalised sociological concepts to a particular sport and its social and cultural context is not always appropriate. In Australian academia, the custom is particularly appealing, due to the Australian colonial 'cultural cringe', the pattern of automatic deference to overseas (termed 'international') knowledge. This article argues that 'Fresh Prince of Coloma! Dome: Indigenous Logic in the AFL' (Football Studies, 8(1), 2005) inappropriately applies American sociological, and American football, logic to the indigenous Australian game Australian football, which differs in character both as a game and in its social, cultural and political context. The three researchers do not take account of the factors of height and weight in Australian football, and the average size of Aboriginal players, and of the relationship between speed and strength in the game as strategies and tactics change. Both omissions constitute fundamental flaws. American football and sports sociology's ideas of 'central position theory', with a suggestion of underlying racism, is of limited relevance to Australian football. It is also possible that the American sitcom, Fresh Prince of Bel Air, was neither a helpful muse nor a suitable metaphor for research into this subj ect. In Australian football, a game in which few 'central positions' are crucial and in which 'leadership positions' can be found in many parts of the ground, including the half-back flank and the wing, neither size nor position are the only major determinants of significance in the team.

Constructing the Australian musical child

This paper makes use of Foucauldian discourse analysis to examine some of the current directions in Arts education and Music Education, in particular, that are being promoted by education authorities in Australia. Foucault's concept of discourse, and analytical procedures developed from his ideas, have been much discussed recently but have not been applied very rigorously or very widely other than by Foucault himself. This paper will introduce some of the basic concepts and demonstrate how application of these concepts can identify, explain or elucidate basic misconceptions that are currently being promoted as the way forward in arts education.

Curriculum development and implementation has become an important focus for educational policy in the past ten years. Inspired by the work of the Federal Labour government between 1989 and 1994 which developed the national curriculum Statements and Profiles, many states have adopted a model of centralized curriculum development in which learning is mapped out for all students up to the age of eighteen. These learning "profiles" have been developed and disseminated at great expense in terms of time, money and effort. They represent a considerable investment of educational resources. Typically, however the resulting curriculum documents are complex, difficult to understand and use, and can appear unrelated to many of the normal practices in school. This has placed teachers in the position of having either to ignore them or to work against much of their own training and personal assumptions about what constitutes music education.

It will be suggested that there are some basic flaws in the way that many curriculum documents in Australia have conceived of music education and learning. With recent new developments in Victoria, South Australia and Western Australia, there is no indication that this process of profiling student development is really devoted to improving our understanding either of learning or of teaching. In fact, it would appear to be developing a life of it's own, oblivious to the practices and structures of our educational systems. It will be suggested that a more realistic assessment of our practices needs to form the basis of our frameworks and that they should not be developed as abstract theoretical models.

A taxonomy of penetration testing ethics

In an environment where commercial software is continually patched to correct security flaws, penetration testing can provide organisations with a realistic assessment of their security posture. Penetration testing uses the same principles as criminal hackers to penetrate corporate networks and thereby verify the presence of software vulnerabilities. Network administrators can use the results of a penetration test to correct flaws and improve overall security. The use of hacking techniques, however, raises several ethical questions that centre on the integrity of the tester to maintain professional distance and uphold the profession. This paper discusses the ethics of penetration testing and presents our conceptual model and revised taxonomy.

Promoting physical activity participation among children and adolescents

With global increases in the prevalence of overweight and obesity among children and adolescents, there has never been a more urgent need for effective physical activity programs. The aim of this narrative review is to summarize the evidence of the effectiveness of interventions that report physical activity outcomes in children aged 4–12 years and adolescents aged 13–19 years. A systematic search of electronic databases identified 76 interventions. Most interventions were delivered via the school setting (57 interventions), nine through the family setting, six via primary care, and four in community- or Internet-based settings. Children's physical activity interventions that were most effective in the school setting included some focus on physical education, activity breaks, and family strategies. Interventions delivered in the family setting were not highly effective, but many were pilot studies. The use of motivationally tailored strategies and program delivery in the primary care setting showed promise among adolescents. Many studies had methodological and reporting flaws (e.g., no baseline data, poor study design, physical activity measures of unknown reliability and validity, and poor reporting of sample size, response rates, attrition/retention, compliance, year of intervention, and duration of intervention). Publications reporting the results of evaluations of intervention studies should follow the Consolidated Standards of Reporting Trials guidelines or, for nonrandomized studies, should follow the Transparent Reporting of Evaluations with Nonrandomized Designs guidelines. Further evidence of the effectiveness of interventions promoting young people's physical activity in family and community settings is needed.

Probabilistic reasoning of inconsistent belief in protocol analysis

Security protocols have been recently found with subtle flaws due to incomplete or ambiguous specification. Although formal methods have remarkably assisted in protocol analysis, they ignores the effect of hostile/uncertain environment, which might lead to inconsistent belief that can be held by principals in delivered messages. This discrepant belief may prevent us from representing the insecurity and uncertainty in a real trading situation. Unfortunately, the current approaches lack the ability to handle the inconsistent belief. This article presents a probabilistic method, which intuitively measures the belief from different principals that can be put on the goal of the protocol. The experiments demonstrate our method is useful to enhance the protocol analysis.

Comparing Victoria's genuine progress with that of the Rest-of-Australia

While a range of exogenous and endogenous factors affect the standard of  living of most Australians in a more-or-less uniform way, the different social and economic-policies of each state government are likely to affect the levels of sustainable well-being experienced across the various states. With this in mind, a Genuine Progress Indicator (GPI) - a newly devised measure of sustainable well-being - is calculated for Victoria and the Rest- of- Australia (Australia minus Victoria) for the period 1986-2003. The GPI takes account of the various costs and benefits of economic activity in order to investigate the impact of a growing state or national economy on sustainable well-being.
By analysing the GPI results and the policies undertaken by the Victorian government, it is possible to determine what the state of Victoria is doing differently to the Rest-of-Australia that might be beneficial or detrimental to sustainable well-being. While our study reveals that Victoria is performing better than the Rest-of-Australia, it also highlights flaws in the policy-making process that have resulted in Victoria's Gross State Product (GSP) overstating its genuine progress.

Tests of measurement invariance failed to support the application of the "then-test"

Objective
The use of then-test (retrospective pre-test) scores has frequently been proposed as a solution to potential confounding of change scores because of response shift, as it is assumed that then-test and post-test responses are provided from the same perspective. However, this assumption has not been formally tested using robust quantitative methods. The aim of this study was to compare the psychometric performance of then-test/post-test with traditional pre-test/post-test data and assessing whether the resulting data structures support the application of the then-test for evaluations of chronic disease self-management interventions.

Study Design and Setting
Pre-test, post-test, and then-test data were collected from 314 participants of self-management courses using the Health Education Impact Questionnaire (heiQ). The derived change scores (pre-test/post-test; then-test/post-test) were examined for their psychometric performance using tests of measurement invariance.

Results
Few questionnaire items were noninvariant across pre-test/post-test, with four items identified and requiring removal to enable an unbiased comparison of factor means. In contrast, 12 items were identified and required removal in then-test/post-test data to avoid biased change score estimates.

Conclusion
Traditional pre-test/post-test data appear to be robust with little indication of response shift. In contrast, the weaker psychometric performance of then-test/post-test data suggests psychometric flaws that may be the result of implicit theory of change, social desirability, and recall bias.

The adverse effect of dummy auction bids on market value

The popularity of an auction as a means of selling residential real estate has increased markedly in recent years. The effectiveness of an auction program is heavily promoted by most real estate agents, claiming it to be the best means of attracting the best price from the highest bidder, It is based on the theory of gathering all buyers together at a publicised time, and then offering the property for sale to the open market.

In theory, the person most willing to buy the property will have the highest bid, supposedly agreeing at market value with the vendor (although above the vendor's reserve I. Unfortunately, the practice of dummy bidding has recently resurfaced and highlights serious flaws in the auction system, with hundreds of residential auctions conducted across Australia every weekend.

Clearly, it is in the vendor's best interests land the auctioneer's best interests, who is paid even more by the vendor if the price is higherl to achieve the highest offer from the last bidder. The tactic of dummy bids is designed to deceive genuine purchasers into a false sense of perception, where there appears to be more competition for the property than there actually exists.

This paper examines the auction process with the emphasis placed on the practice of dummy biding, It considers the broad implications for the definition of market value and also the overall residential market. Useful advice is also included for real estate valuers relying upon auction sale properties in their market analysis. As well as strongly supporting the auction concept, the authors suggest improvements to the overall auction process to ensure relevance to the definition of market value is maintained.

Situationist outdoor education in the country of lost children

This thesis is a study of outdoor education, in the deliberative tradition of curriculum inquiry. It examines the intentional generation and distribution of knowledge, beliefs, and attitudes through organised outdoor activities, both as a research interest, and as a critical perspective on outdoor education discourse. Eight separate but interrelated research projects, originally published in 11 refereed journal articles, develop and defend the thesis statement: The problem of determining what, if any, forms of outdoor experience should be educational priorities, and how those experiences should be distributed in communities and geographically – that is who goes where and does what – is inherently situational. The persistence of a universalist outdoor education discourse that fails to acknowledge or adequately account for social and geographic circumstances points to serious flaws in outdoor education research and theory, and impedes the development of more defensible outdoor education practices. The introduction explains how the eight projects cohere, and illustrates how they may be linked using the example of militaristic thinking in outdoor safety standards. Chapters 1 and 2 defend and elaborate a situationist approach to outdoor education, using the examples of outdoor education in Victoria (Australia), and universalist approaches to outdoor education in textbooks respectively. Chapters 3 and 4 expand on some epistemological implications of the thesis and examine, respectively, the cultural dimensions of outdoor experience, and the epistemology and ontology of local natural history. Chapters 5 and 6 apply a situationist epistemology to personal development based outdoor education. Traditions of outdoor education that draw on person-centred rather than situation-sensitive theories of behaviour are examined and critiqued. Alternatives to person-centred theories of outdoor education are discussed. Chapters 7 and 8 use situationist outdoor education to provide a critical reading of nature-based tourism. Chapters 9, 10, and 11 return to the theme of safety in the introduction and Chapter 1, and examine the safety implications of a situationist epistemology. Closing comments briefly draw together the conclusions of all of the chapters, and offer some directions for future outdoor education research.