Effects of natural weathering on microstructure and mineral composition of cementitious roofing tiles reinforced with fique fibre

The objective of the present work was to evaluate the effects of 14 years of weathering exposition on the microstructure and mineral composition of cementitious roofing tiles, still in service, reinforced with fique fibres (Furcrae gender). The results show that tiles under weathering exposition presented higher water absorption and apparent void volume than tiles under laboratory exposition. The continuous hydration of cement and natural carbonation filled the smaller pores but contrarily the large pores remained in the porous fibre to matrix interface in the samples exposed to weathering. On the other hand, their microstructure presented lower air permeability than samples aged in the internal environment of the laboratory. Besides, in the weathering aged tiles takes place a more intensive hydration process as it was identified greater amount of hydrated phases than in the laboratory aged specimens. The present results contribute to understanding the consequences of tropical weathering on the fibre-cement degradation. (C) 2010 Elsevier Ltd. All rights reserved.

Materialising bodies : there is nothing more material than a socially constructed body.

Over the last one of two decades, researchers within the physical education (PE) and sport pedagogy research frequently use the concept ‘the material body’. An initial purpose of this article is to explore what a concept of a ‘material body’ might mean. What other bodies are there? Who would dispute the materiality of bodies? I suggest that the use of a concept as ‘the material body’ suggests a hesitation before the radicalism of the linguistic turn in the sense that the concept ‘discourse’ does not include a material dimension. In this way ‘the material body’ relates to an interpretation of ‘the socially (or discursively) constructed body’ as void of matter. A further purpose with the article is to re-inscribe matter in the concept of ‘discourse’. This is done by way of discussing what theorists like Michel Foucault and, in particular, Judith Butler, has to say about the materiality of the body. In their writings, discourse should not be limited to spoken and/or written language. Rather, discourse is understood in terms of actions and events that create meanings—that matters. One conclusion of the article is that it is important to problematise the mundane view of discourse as ‘verbal interchange’ because it reinforces the promise of an objective knowledge that will eventually shed light on the ‘real’ body and the mysteries of sexual difference, what its origins are, what causes it. Another conclusion is that the PE and sport pedagogy research should pay less attention to the body as an object (what it ‘is’), and pay more attention to how the body matters, and e.g. how movements make bodies matter.

The internet and competitive advantage : a study of Australia`s four premier professional sporting leagues

Sport and the Internet have shown early signs of a prosperous marriage. Web sites with sport content are among the most popular and well trafficked, with sport followers and web users sharing remarkably similar demographics. In the United States, the sport–Internet union is projected to generate US$6.27 billion in advertising revenue alone on sports-related web sites by 2005. Despite these compelling observations, limited empirical research has been undertaken exploring how to maximise the opportunities for competitive advantage that the Internet can provide to sport organisations. This research was a response to this void, and was undertaken in three stages. Initially, empirical and conceptual Internet literature was reviewed to establish theoretical “best practice”. Secondly, the Internet goals, strategies and practices of the 55 teams competing in the Australian Football League (AFL), National Basketball League (NBL), National Rugby League (NRL), and National Soccer League (NSL) were examined, using a telephone-administered survey. An 87% (N = 48) response rate was achieved. Finally, seven recommendations for closing this gap were made, including the implementation of Internet project teams and the instigation of league forums.

Synthesis and structure of 1,3,5-tris(diorganohydroxysilyl)benzenes. Novel building blocks in supramolecular silanol chemistry

The 1,3,5-tris(diorganohydroxysilyl)benzenes 1,3,5-(HOR₂Si)₃C₆H₃ (TMSB, R = Me; TPSB, R = Ph) have been prepared and fully characterized by X-ray crystallography. The crystal structure of TMSB features pairwise connected layers, in which the molecules are involved in interlayer hydrogen bonding. The supramolecular hydrogen bond motif may be described as a 12-membered ring that adopts a chair conformation. TPSB forms an equimolar inclusion complex with water, which is associated via hydrogen bonding and apparently fills a void in the crystal packing. In this case, the supramolecular hydrogen bond motif may be described as an eight-membered ring. Two of the water molecules are also associated, giving rise to a water dimer entrapped in the silanol matrix. Besides the hydrogen bonds, the crystal structure of the TPSB·H₂O complex reveals intra- and intermolecular C-H··· π stacking of most of the phenyl groups. Electrospray mass spectrometry shows that TPSB undergoes supramolecular complex formation with a variety of N-donors such as 4-(dimethylamino)pyridine, N,N,N',N'-tetramethylethylenediamine, imidazole, 2-(dimethylamino)pyridine, and 2,2'-dipyridylamine.

Download the full text: PDF | HTML

Doubles or nothing : the problem of binding truth to being in the work of Alain Badiou

In this article, I discuss how things go with the "Nothing" in the work of Alain Badiou, a topic which is evidently central to his thought, and which has received a great deal of attention in the commentary to date. As this problem is inaccessible outside of Badiou’s deployment of mathematics, I will suggest how accounts of Badiou’s work remain flawed insofar as they evade his mathematical demonstrations, and I attempt to clarify how mathematics operates in his system. I then examine the consequences that such a use of mathematics has for Badiou’s doctrine of the nothing. I conclude with a discussion of some of the difficulties that the nothing continues to pose to Badiou, which have not (yet) been satisfactorily resolved. These difficulties devolve from the problematic of the incessantly doubling void.

On Compositional Modelling

Many solutions to AI problems require the task to be represented in one of a multitude of rigorous mathematical formalisms. The construction of such mathematical models forms a difficult problem which is often left to the user of the problem solver. This void between problem solvers and the problems is studied by the eclectic field of automated modelling. Within this field, compositional modelling, a knowledge-based methodology for system modelling, has established itself as a leading approach. In general, a compositional modeller organises knowledge in a structure of composable fragments that relate to particular system components or processes. Its embedded inference mechanism chooses the appropriate fragments with respect to a given problem, instantiates and assembles them into a consistent system model. Many different types of compositional modeller exist, however, with significant differences in their knowledge representation and approach to inference. This paper examines compositional modelling. It presents a general framework for building and analysing compositional modellers. Based on this framework, a number of influential compositional modellers are examined and compared. The paper also identifies the strengths and weaknesses of compositional modelling and discusses some typical applications.

Older Australians : involvement in civil society in the 1990s

As Australia’s population continues to age, questions about how older individuals use their time holds increasing interest and significance for scholars and policy makers. As individuals near the end of their paid working life, and family roles and responsibilities diminish, the type of activities that will fill this time void have important implications for the health and wellbeing of older Australians and for the strength of civil society. In Australia, there have been sustained moves at all levels of government to encourage the more active engagement in community services of this group of citizens, given the size and significant amount of human capital of this cohort. However, international research suggests that this enthusiasm has not translated into increased volunteer activity for seniors, and that older citizens tend to spend their expanding discretionary time pursuing leisure activities, such as watching television or listening to the radio (Robinson & Godbey 1997; Wilson & Musick 1997; Thoits & Hewitt 2001). This study builds on a broader interest in how people choose to utilise time across the life course and how the experience of ageing shapes such decisions. This aim of this paper is twofold – first, to investigate how older Australians allocated their time in the 1990s, and how these time use patterns changed over a 5-year period, using nationally representative, longitudinal data from two waves of the Australian Time Use Survey. Second, the time use characteristics of those individuals who devote more time to social participation activities are examined, to investigate trends in volunteering across age cohorts, with a focus on those above the age of fifty.

Consumer complaint behaviour and relationship marketing: a research agenda

A void identified within the Relationship Marketing literature is the lack of research on dissatisfactory or problem relationships, so the utilisation of work that has been conducted in the area of Consumer Complaint Behaviour (CCB) is appropriate. Therefore, this paper identifies ways in which the CCB literature may be used to advance knowledge in the field of Relationship Marketing. As the context of this paper is consumer - service provider relationships, an assessment is made of some of the implications of technology-infusion in service encounters, at two levels, namely at the broad relationship marketing level, that is, the likely impact of technology infusion on consumer - service provider relationships, and then more specifically regarding implications for CCB.

A comparative generational analysis of a cultural event

Like most products, special events are marketed to specific target markets. One such event, however, held in Melbourne, Australia, in May 2005, was marketed more broadly to the Melbourne community. The cultural event was developed to stimulate discussion, which one social commentator noted is currently deficient …‘there is a prevailing element of defensiveness, wariness and caution in our public discourse’ (Jones, 2005). The event sought to fill this void in community life and encouraged members of cross-sections of the community to participate in the event. One evaluative measure of success of the event was, therefore, the post-consumption evaluations of attendees. By using generational segments (ie. Traditionalists, Baby-boomers, Generation X and the Millennials) as the bases of comparison, few statistically significant differences were found with regard to post-consumption evaluations of the event. It is, therefore, not unreasonable to conclude that the event was successful in that the generational segments were generally homogenous with regard to the post-consumption evaluations of the event. The results, however, provide opportunities for improvement in the event’s marketing and management in the future.

Self-service technologies and voice intentions : an empirical investigation

Consumer dissatisfaction with self-service technologies (SSTs) has become prevalent. Although consumers’ voice has been studied in the interpersonal services context, in the context of SSTs it has been subject to very little conceptual or empirical scrutiny. To fill this void, this study tests empirically a model of the antecedents of consumers’ voice intentions in the context of unsatisfactory SST encounters. The findings suggest the need to integrate both “new” and “conventional” complaint behaviour management in the SST setting.

Contract Law

Each title in the Butterworths Casebook Companions series provides a basic coverage of the principles of that area of law. Students are then directed to read specific cases and materials and are provided with pertinent questions designed to enhance their knowledge and understanding and ensure that they can apply the principles. Charts, diagrams and suggested tasks are included where appropriate to encourage active participation and learning and further explain and simplify material. Contract Law is designed for students who have no previous knowledge of contract law. The book covers all aspects of contract law, including: the nature and development of contract law; agreement; consideration; intention to create legal relations; capacities and formalities; terms and their construction; matters rendering a contract void, voidable or unenforceable; performance and termination; remedies; and solving contract problems. Preface Glossary of terms Table of cases Table of statutes Part 1 — Introduction Part 2 — Formation Part 3 — Scope and content Part 4 — Destruction Part 5 — Performance and termination Part 6 — RemediesIndex

Growth and structure of prismatic boron nitride nanorods

Prismatic boron nitride nanorods have been grown on single crystal silicon substrates by mechanical ball-milling followed by annealing at 1300 °C. Growth takes place by rapid surface diffusion of BN molecules, and follows heterogeneous nucleation at catalytic particles of an Fe/Si alloy. Lattice imaging transmission electron microscopy studies reveal a central axial row of rather small truncated pyramidal nanovoids on each nanorod, surrounded by three basal planar BN domains which, with successive deposition of epitaxial layers adapt to the void geometry by crystallographic faceting. The bulk strain in the nanorods is taken up by the presence of what appear to be simple nanostacking faults in the external, near-surface domains which, like the nanovoids are regularly repetitive along the nanorod length. Growth terminates with a clear cuneiform tip for each nanorod. Lateral nanorod dimensions are essentially determined by the size of the catalytic particle, which remains as a foundation essentially responsible for base growth. Growth, structure, and dominating facets are shown to be consistent with a system which seeks lowest bulk and surface energies according to the well-known thermodynamics of the capillarity of solids.

Life (or more so death) after Barns v Barns

Critical analysis of the High Court decision in Barns v Barns - relationship between mutual wills and testator family maintenance legislation - whether an agreement for mutual wills was void for public policy reasons - whether property of a deceased that was obligated under maintenance legislation could be passed to an applicant contrary to the mutual wills agreement - implications of decision.

Internationalising auditing standards : stakeholder views on Australia's strategic directions

Purpose: – The purpose of this paper is to examine and evaluate the internationalisation of Australian auditing standards by analysing the submissions to the Auditing and Assurance Standards Board's (AUASB) strategic directions paper (SDP) and comparing the proposed and approved strategic directions frameworks of the AUASB.

Design/methodology/approach: – A content analysis of the submissions to the SDP is conducted to identify the extent of support, and arguments for and against the proposed strategic directions. This study attempts to find a link, if any, between the proposed strategic directions, the views expressed by the stakeholders, and the final set of strategic directions issued by Australia's Financial Reporting Council.

Findings: – Overall, the final set of strategic directions released in April 2005 are consistent with the views expressed in the submissions, which support minimal divergence from International Standards on Auditing (ISAs) and using the ISAs as the base for developing Australian auditing standards. Major changes from the SDP include a requirement for the AUASB to undertake research and monitor auditing standards issued by national standard setters. However, the AUASB is no longer obliged to contribute to the international standard arena and need only have regard to any program initiated by the International Auditing and Assurance Standards Board.

Research limitations/implications: – The findings of this study provide an insight into the future of Australia's role in the international arena and increase awareness of stakeholders' views on the international harmonisation of auditing standards.

Originality/value: – While there have been several studies examining the international harmonisation of accounting standards, there is comparatively little research on the international harmonisation of auditing standards. This paper attempts to address this void, in part, and contribute to the literature on the convergence of auditing standards with ISAs.

Entropy-based collaborative detection of DDOS attacks on community networks

A community network often operates with the same Internet service provider domain or the virtual network of different entities who are cooperating with each other. In such a federated network environment, routers can work closely to raise early warning of DDoS attacks to void catastrophic damages. However, the attackers simulate the normal network behaviors, e.g. pumping the attack packages as poisson distribution, to disable detection algorithms. It is an open question: how to discriminate DDoS attacks from surge legitimate accessing. We noticed that the attackers use the same mathematical functions to control the speed of attack package pumping to the victim. Based on this observation, the different attack flows of a DDoS attack share the same regularities, which is different from the real surging accessing in a short time period. We apply information theory parameter, entropy rate, to discriminate the DDoS attack from the surge legitimate accessing. We proved the effectiveness of our method in theory, and the simulations are the work in the near future. We also point out the future directions that worth to explore in the future.