A comparative study of the mechanical properties of wool and alpaca fibres

This study reports the latest research into alpaca and wool fibres. In particular, those properties that have received little attention in research literature have been examined. They include single fibre abrasion and bending fatigue, single fibre tensile properties, as well as resistance to compression behaviour. These properties are important because they affect the softness and pilling propensity of these fibres and the resultant fabrics. Clean wool and alpaca fibres were used in this study. Fibre abrasion/bending fatigue measurements were carried out using a Textechno FIBRESTRESS instrument. The resistance to compression (RtC) tests were carried out according to Australian Standard AS3535-1988. The results indicate that wool and alpaca fibres behave quite differently, even though both fibre types are of animal origin. Wool fibre resistance to compression decreases as fibre diameter increases while the opposite appears to occur for alpaca fibres. For both wool and alpaca the number of abrasion/bending cycles at fibre break increases with an increase in fibre diameter, it takes longer to break the alpaca fibres. Reasons for these differences have been postulated based on differences in fibre surface and structure between alpaca and wool.

Explanations for mixed-orientation marriage : a comparative study of previously married and never-married gay men

Despite a large body of literature on the development of sexual orientation, little is known about why some men who marry women have (or develop) a homosexual orientation. In the current study, a selfselected sample of 43 never-married gay men and 26 gay men who were married to a woman completed a self-report questionnaire. As well as obtaining descriptive information from the 26 men about their marriages and reason for marrying, hypotheses were tested, based on five possible explanations for gay men’s marriages: (a) internalised homophobia; (b) religious intolerance (c) confusion created because of childhood/adolescent sexual experiences; (d) poor psychological adjustment; and (e) differences in strength of sexual preference. The two most frequent reasons for marriage were that it “seemed natural”, and a desire to have children and “family life”. The attitudes to gay men and lesbians held currently by the married group were significantly more positive than their reports of their attitudes around the time their marriage commenced, and the level of childhood sexual experiences with adults or older adolescents was significantly associated with the extent of their unsafe sexual practices with men (prior, during and/or after marriage). Marrieds described their families’ religious beliefs as more fundamentalist than never-marrieds. Family adaptability and family cohesion and the degree to which respondents reported having experienced child maltreatment did not distinguished between marrieds and never-marrieds, however these variables did predict the level of self-depreciation. No differences were found between marrieds and never-marrieds’ ratings of their sexual orientation and identity, homophobia, or self-depreciation. The results highlight how little is understood of the reasons why gay men marry, and the need to develop an adequate theoretical model.

Pedagogical templates : a comparative study of higher order reflective making

Schon’s notion of reflection-in-action implies a constructivist process of learning, especially valid in the teaching of professional disciplines such as architecture. Action becomes the instrument of conjecture and learning arises in the context of reflection upon the act. Such a process of interleaving action and reflection constitutes a “higher-order” process of reflective making. Research in design studies has shown that strategies for making differ markedly between professional and novitiate designers. Further, such studies have shown that skilled designers employ past experience and precedents to create context for new problem situations. To address the lack of context in novitiate learning situations, we propose the use of “pedagogical templates” for the promotion of “higher-order” strategies in design learning contexts for supporting beginning design students. We focus on the use of digital media, specifically for the design, implementation and delivery of constructive learning situations. This paper presents the use of a pedagogical template in the creation of constructivist contexts for two complementary courses, a traditional design studio and a computer modelling course at Deakin University. The resulting implications for design learning and the integration of physical and digital forms of making through the use of a pedagogical template are discussed.

A comparative study on accelerated weathering tests of wool fabrics

This work has used two lightboxes with Philips 500 W MBTF lamps for a comparative trial on the photoyellowing evaluation of untreated wool fabrics under dry and wet conditions. An investigation was made to account for different trends of photoyellowing of the same wool fabric when irradiated by the two lightboxes. The fabric specimens irradiated in one lamp experienced increasing yellowing with irradiation time while specimens from the same wool fabric but irradiated under the other lamp manifested no noticeable color change. These differences are attributed to the susceptibility of wool to small spectral differences between the two MBTF lamps. Furthermore, the color fading results obtained from the commonly used blue wool standard (BWS) references from L1 to L3 show that these reference materials could not effectively reveal changes caused by the spectral differences in two MBTF lamps. These results have important implications for conducting accelerated weathering tests on spectrum-sensitive textile materials, and considerable care should be taken when using BWSs to ensure reliable and consistent irradiation results.

Information source usage and enthusiasm in opera : a comparative study

The research reported in this paper investigated the relationship between information usage and individual ticket-purchasing activity of Opera Australia customers in relation to specific Opera Australia products, namely, operetta and opera. The results provide some support for the notion that consumers of operetta and opera can be distinguished on the basis of their different behaviour in some areas. However, there is substantial “crossing-over” or inconsistency in the data. Longevity of association with the art-form, and purchasing tickets to both types of productions, tended to be related to increased reliance on information sources closer to Opera Australia.

Concepts and principles in unjust enrichment : a comparative study

The Thesis was inspired by a perceived need better to understand the unique description of unjust enrichment by the Australian courts, as a unifying legal concept. It demonstrates that concepts and principles are essential features of the common law because they identify the character and taxonomy of rules. The comparative study, encompassing Australian and English law primarily, and law of other jurisdictions, modern and ancient, elucidates the special characteristics of the concepts and principles of Anglo/Australian unjust enrichment and of concepts and principles generally. A like concept has had a place in the common law since its inception under several characterisations. It bears the mark of ancient Roman jurisprudence, but relates to independent principles. The jurisprudence was formed by special characteristics of its history. It is distinct from modern Roman/Dutch law but the doctrinal overtones of its foundational case law reflect the basis of reasoning which in Continental law, is found in the adopted ancient codes. It is this foundation of reasoning and the firm rejection of a normative general principle that makes Anglo/Australian law different in character and jurisprudence from unjust enrichment in USA and Canada. Stifled for centuries by quasi contract misconceptions, the law of unjust enrichment entered the modern law in the 20th C through the seminal judgements of Lord Wright in Fibrosa Spolka Akcyjna v Fairbairn Lawson Coombe Barbour Ltd, and related cases and through the strong judicial and juristic following they inspired. That “…any civilised system of law is bound to provide remedies for … unjust enrichment…” became an imperative across the common law world: it has long held a place in the Roman Dutch jurisdictions of South Africa and Continental Europe. The special character of unjust enrichment in Anglo/Australian law is focussed upon a unique action where-by the law imposes an obligation upon the establishment of a recognised ground. The notion of breach of a primary rule does not arise: the obligation is therefore a primary obligation imposed by law, as distinct from a remedy for a breach. Important consequences flow from the characteristic. The juristic development of unjust enrichment in the common law has long been the sole prerogative of the superior courts. The place of historical features of the jurisprudence has however been subsumed by modern judicial methodology that is slowly assuming a unifying pattern of reasoning from case to case; from one ground to another. This is the special characteristic of the unifying legal concept and English principle of unjust enrichment. The thesis draws widely based conclusions about concepts and principles of unjust enrichment and the actions and obligations they sponsor. It portrays them as the substance of legal reasoning and analyses underlying theory. to this end, it addresses counter juristic and historical arguments. Its central conclusion are that there are sound jurisprudential arguments for actions based upon a unifying legal concept and English principle of unjust enrichment, and that the explanation of the unjust enrichment concept as the foundation of an independent branch of the common law and taxonomy is theoretically sustainable. In this manner concepts and principles of the common law are demonstrated as critical characteristics of the common law at large.

Strategies for successfully executing and institutionalising organisational change : a comparative study

This study examines the nature of change confronting organisations in Australia in the 1990s. Its aim is to investigate organisational strategies for managing the challenge of deliberate large-scale change, and to consider whether there is a 'critical change path' which every organisation must follow if it is to succeed in executing and institutionalising corporate-wide transformation. The research was conducted by carrying out in-depth case studies of three multinational companies operating in Australia. The case studies show a consistent pattern of corporate transformation in which companies adopt a range of strategies to implement and sustain effective change. These include fostering a climate for change; providing a clear vision for the future; promoting strong leadership; communicating the message for change consistently and repeatedly to all levels of the organisation; reinforcing the message through rewards and symbols; and ensuring change is institutionalised by promoting a capacity for continual adaptation and learning. These observations suggest that the pattern of corporate transformation can be depicted as a framework of steps which organisations must follow to enhance their prospects of institutionalising behavioural change. In this framework, the steps towards change are not uni-directional; they overlap and reinforce each other and should be revisited regularly to reinvigorate the message and sustain the momentum for change.

National identity in Timor-Leste : a brief comparative study

The papers in this eduted and refereed volume were first presented at the Timor-Leste Studies Association's Understanding Timor-Leste conference (UNTL, Dili, 2-3 July 2009). Papers in the collection are divided into four language sections (Tetum-Dili, Portuguese, English and Bahasa Indonesia), along with a special section on Adult and Popular education.