title: Assessment practices in work-integrated learning

authors: Zegwaard, Karsten E.

abstract: The purpose of this webinar is to discuss the purpose of assessment in work-integrated learning (WIL), what authentic assessments means and explore examples of high quality assessment in different modalities of WIL.

text: Assessment practices in work-integrated learning The purpose of this webinar is to discuss the purpose of assessment in work-integrated learning (WIL), what authentic assessments means and explore examples of high quality assessment in different modalities of WIL.

year: 2024

title: Assessment of roughness and chemical modification in determining the hydrophobic properties of metals

authors: Larmour, Iain A.

subjects: chemistry

abstract: “Etch and coat” methods, potentially useful for large scale production of superhydrophobic surfaces on metals, have been extended by introduction of a thin 20 nm Au interlayer which allowed thiol surface modifiers to be investigated. Fe, Ti and Zn surfaces modified in this way with a polyfluorothiol generally had lower contact angles, θ, than their silane modified equivalents but were more uniform and reproducible. The higher θ values for silanes appear to be associated with an increased effective roughness that is not seen in the thiol coatings, which follow the underlying surface. For Fe, Ti and Zn, θ increased to a maximum with etching time but then decreased significantly. Electron microscopy of samples etched for long times showed fewer grain boundaries, suggesting that the loss of hydrophobicity was related to reduced roughness. This was confirmed through quantitative measurements of roughness parameters which were directly correlated with the observed contact angles through the Wenzel equation. The observation of this behaviour for 3 different metals suggests it is a general effect and the assumption that increased etch times will give increased roughness is incorrect. Although etching , Au coating and thiol modification did not provide sufficient roughness for superhydrophobicity, electrodeposition of a Cu layer onto the metal substrates followed by electroless deposition of silver gave uniform surfaces with very high contact angles (up to θ = 168.9°) and low roll-off angles (α < 1°). This method is sufficiently simple and inexpensive to be suitable for application on industrial scales, for example in marine or aeronautical engineering.

text: Assessment of roughness and chemical modification in determining the hydrophobic properties of metals “Etch and coat” methods, potentially useful for large scale production of superhydrophobic surfaces on metals, have been extended by introduction of a thin 20 nm Au interlayer which allowed thiol surface modifiers to be investigated. Fe, Ti and Zn surfaces modified in this way with a polyfluorothiol generally had lower contact angles, θ, than their silane modified equivalents but were more uniform and reproducible. The higher θ values for silanes appear to be associated with an increased effective roughness that is not seen in the thiol coatings, which follow the underlying surface. For Fe, Ti and Zn, θ increased to a maximum with etching time but then decreased significantly. Electron microscopy of samples etched for long times showed fewer grain boundaries, suggesting that the loss of hydrophobicity was related to reduced roughness. This was confirmed through quantitative measurements of roughness parameters which were directly correlated with the observed contact angles through the Wenzel equation. The observation of this behaviour for 3 different metals suggests it is a general effect and the assumption that increased etch times will give increased roughness is incorrect. Although etching , Au coating and thiol modification did not provide sufficient roughness for superhydrophobicity, electrodeposition of a Cu layer onto the metal substrates followed by electroless deposition of silver gave uniform surfaces with very high contact angles (up to θ = 168.9°) and low roll-off angles (α < 1°). This method is sufficiently simple and inexpensive to be suitable for application on industrial scales, for example in marine or aeronautical engineering.

year: 2008

title: Te Tuhirau i Rehu i Ringa: Translating Sacred and Sensitive Texts: An Indigenous Perspective

authors: Tipene, Jillian

subjects: translation

abstract: This thesis centers on translator cognition. Through a series of interviews and think-aloud protocols (Chapters 3 – 5), it explores the ways in which a sample of translators (both Māori and non-Māori) negotiate the complex issues involved in translating between a local, Indigenous language (Māori) and an international one (English) and, in particular, how they approach the definition and translation of texts that could be regarded as being ‘sacred’ and/or ‘sensitive’. In their definitions of ‘sacred’ texts and ‘sensitive’ texts, all of the participants exhibited a peculiarly postmodern positioning, focussing primarily on perspective rather than on any absolute concept of truth or reality. With the exception of the Māori participants’ traditional definition of, and approach to texts deemed to be ‘tapu’ (see Chapter 3), all of the participants expressed beliefs about the translation process which were largely structurally-orientated. They emphasized the importance of respecting the cultural context out of which texts emerged and of attempting, in translation, to reflect the meanings deemed to reside in the source texts by virtue of the intentions of their authors. As witnessed in their think-aloud protocols, however, when involved in the actual process of translation the translators did not always adhere to the views expressed in their interviews, with translation procedures ranging from one that was primarily modernist and structural in orientation (but also reflecting the careful attention to co-text and cohesion that is characteristic of much recent research on discourse analysis) to one that was primarily postmodern and post-structural in orientation, being highly personal, autonomous and individualistic.  

In the absence of any clear agreement about translation theory in the literature on translation (see Chapter 2), and at a time when pre-modern, modern and postmodern positioning and structural and post-structural perspectives vie for acceptance, each of the participants in this research project appears to have found his or her own way of traversing the complex terrain of translation practice without necessarily being fully aware of the way in which the decisions they made positioned them theoretically. What this suggests is the need for a type of training that introduces novice translators in an explicit way to a variety of theories about human language and communication and the ways in which they can impinge upon translation practice, thus creating a context in which translators are able to make critically informed decisions about how they will proceed in any particular instance, why they will proceed in these ways, and what is required in order to ensure that their beliefs about translation are in accord with their actual practices. Critical awareness of these issues is likely to be particularly important in the case of those involved in translating between international languages such as English and more localized, Indigenous languages such as Māori, where discontinuity in the transmission of the language has occurred and where, therefore, texts that are deemed to be of particular significance would otherwise be unavailable to those for whom the texts form part of their cultural heritage.

text: Te Tuhirau i Rehu i Ringa: Translating Sacred and Sensitive Texts: An Indigenous Perspective This thesis centers on translator cognition. Through a series of interviews and think-aloud protocols (Chapters 3 – 5), it explores the ways in which a sample of translators (both Māori and non-Māori) negotiate the complex issues involved in translating between a local, Indigenous language (Māori) and an international one (English) and, in particular, how they approach the definition and translation of texts that could be regarded as being ‘sacred’ and/or ‘sensitive’. In their definitions of ‘sacred’ texts and ‘sensitive’ texts, all of the participants exhibited a peculiarly postmodern positioning, focussing primarily on perspective rather than on any absolute concept of truth or reality. With the exception of the Māori participants’ traditional definition of, and approach to texts deemed to be ‘tapu’ (see Chapter 3), all of the participants expressed beliefs about the translation process which were largely structurally-orientated. They emphasized the importance of respecting the cultural context out of which texts emerged and of attempting, in translation, to reflect the meanings deemed to reside in the source texts by virtue of the intentions of their authors. As witnessed in their think-aloud protocols, however, when involved in the actual process of translation the translators did not always adhere to the views expressed in their interviews, with translation procedures ranging from one that was primarily modernist and structural in orientation (but also reflecting the careful attention to co-text and cohesion that is characteristic of much recent research on discourse analysis) to one that was primarily postmodern and post-structural in orientation, being highly personal, autonomous and individualistic.  

In the absence of any clear agreement about translation theory in the literature on translation (see Chapter 2), and at a time when pre-modern, modern and postmodern positioning and structural and post-structural perspectives vie for acceptance, each of the participants in this research project appears to have found his or her own way of traversing the complex terrain of translation practice without necessarily being fully aware of the way in which the decisions they made positioned them theoretically. What this suggests is the need for a type of training that introduces novice translators in an explicit way to a variety of theories about human language and communication and the ways in which they can impinge upon translation practice, thus creating a context in which translators are able to make critically informed decisions about how they will proceed in any particular instance, why they will proceed in these ways, and what is required in order to ensure that their beliefs about translation are in accord with their actual practices. Critical awareness of these issues is likely to be particularly important in the case of those involved in translating between international languages such as English and more localized, Indigenous languages such as Māori, where discontinuity in the transmission of the language has occurred and where, therefore, texts that are deemed to be of particular significance would otherwise be unavailable to those for whom the texts form part of their cultural heritage.

year: 2014