title: Dialogic ruptures: An ethical imperative

authors: Arndt, Sonja Kathrina

abstract: Dialogue is promoted as a key strategy to ‘solve’ the ‘problem’ of diversity in educational set- tings. Yet, “[w]hen we select words ... We usually take them from other utterances, and mainly from utterances that are kindred to ours in genre, that is in theme, composition or style” (p. 87, emphasis in the original). This article problematises the complexities of dialogic engagements with foreigner teachers in educational encounters. Bakhtin’s treatment of poly- phonic dialogic encounters provides an analytical frame for explicating the intertextuality of foreigner teacher engagements as not only temporally and culturally, but also individually volatile. The article suggests that dialogic encounters are unpredictably complex, alive and never neutral, and that dialogic engagements can be so fraught with fear that verbal or cross cultural engagements with teacher foreigners must be recognised as risky and dangerous, and not always smooth ‘solutions’ to a ‘problem’. A dual Bakhtinian/Kristevan lens expands the analysis to expose the vulnerability of dialogue, through unconscious revelations of teacher subjects that are forever in process. The article culminates in an argument for the crucial importance of a receptive, attentive ethics of care in dialogic engagements with cultural for- eigners in educational relationships, to avoid fearful exposure, lifeless dialogue and silence.

text: Dialogic ruptures: An ethical imperative Dialogue is promoted as a key strategy to ‘solve’ the ‘problem’ of diversity in educational set- tings. Yet, “[w]hen we select words ... We usually take them from other utterances, and mainly from utterances that are kindred to ours in genre, that is in theme, composition or style” (p. 87, emphasis in the original). This article problematises the complexities of dialogic engagements with foreigner teachers in educational encounters. Bakhtin’s treatment of poly- phonic dialogic encounters provides an analytical frame for explicating the intertextuality of foreigner teacher engagements as not only temporally and culturally, but also individually volatile. The article suggests that dialogic encounters are unpredictably complex, alive and never neutral, and that dialogic engagements can be so fraught with fear that verbal or cross cultural engagements with teacher foreigners must be recognised as risky and dangerous, and not always smooth ‘solutions’ to a ‘problem’. A dual Bakhtinian/Kristevan lens expands the analysis to expose the vulnerability of dialogue, through unconscious revelations of teacher subjects that are forever in process. The article culminates in an argument for the crucial importance of a receptive, attentive ethics of care in dialogic engagements with cultural for- eigners in educational relationships, to avoid fearful exposure, lifeless dialogue and silence.

year: 2016

title: Open-source tool for heat exchanger network synthesis

authors: Hall, Keegan

abstract: The synthesis of heat exchanger networks (HEN) is not a trivial task due to the mixed integer and non-linear nature of the optimisation problem, yet it can provide significant cost and energy use savings to an industrial processing site. Many HEN synthesis models are developed using propriety solvers, which make it difficult for industrial companies to realise the potential of optimisation. This paper introduces a new open-source tool for HEN synthesis built in Python using the GEKKO library, which interfaces with the solver APOPT. The tool features three different synthesis methods, two of which utilise a two-step method where step one aims to initialise or narrow the search space prior to global optimisation in the second synthesis step. A unique feature of this work compared to previous HEN synthesis studies is the application of a true driving force constraint, dQ/dA, (instead of the conventional, but at times crude, minimum approach temperature, ∆Tmin) to provide feasible initial variable values to the second step. To demonstrate the current progress in developing the open-source tool, network solutions obtained by the tool were purposefully compared with the best reported solutions for three common case studies in HEN synthesis literature. For a small problem, the tool achieved a solution within 0.02 % of the best literature solution and attained a solution for the two larger problems within 4 % and 21% of the best literature solution. Before the tool can be made publicly available, further work is needed to implement a non-isothermal mixing model across stream splits, which is expected to yield a more optimal HEN.

text: Open-source tool for heat exchanger network synthesis The synthesis of heat exchanger networks (HEN) is not a trivial task due to the mixed integer and non-linear nature of the optimisation problem, yet it can provide significant cost and energy use savings to an industrial processing site. Many HEN synthesis models are developed using propriety solvers, which make it difficult for industrial companies to realise the potential of optimisation. This paper introduces a new open-source tool for HEN synthesis built in Python using the GEKKO library, which interfaces with the solver APOPT. The tool features three different synthesis methods, two of which utilise a two-step method where step one aims to initialise or narrow the search space prior to global optimisation in the second synthesis step. A unique feature of this work compared to previous HEN synthesis studies is the application of a true driving force constraint, dQ/dA, (instead of the conventional, but at times crude, minimum approach temperature, ∆Tmin) to provide feasible initial variable values to the second step. To demonstrate the current progress in developing the open-source tool, network solutions obtained by the tool were purposefully compared with the best reported solutions for three common case studies in HEN synthesis literature. For a small problem, the tool achieved a solution within 0.02 % of the best literature solution and attained a solution for the two larger problems within 4 % and 21% of the best literature solution. Before the tool can be made publicly available, further work is needed to implement a non-isothermal mixing model across stream splits, which is expected to yield a more optimal HEN.

year: 2022-09-05

title: Developing a kaupapa Māori evaluation model – one size fits all?

authors: Masters-Awatere, Bridgette

subjects: Maori health

abstract: Health statistics in Aotearoa (New Zealand) highlight that Māori, the indigenous people Aotearoa have poorer health than non- Māori. In response to the statistics a number of Māori health providers have established services that address specific areas of need in their regions. Initially there were minimal accountability requirements of providers. However, changes in the health system now mean that groups wanting to establish a new service must provide accountability measures before, during and after the funding has been allocated. As a result providers need to develop a rationale behind their decisions and assess the measure of change that has taken place as a result of the service or programme to ensure continued funding. The requirements reflect the dominant Western paradigm in which health promotion is understood to be about producing specific quantifiable behaviour changes in individuals. Māori health providers on the other hand have tended to take a holistic approach to health. Thus they have found themselves in the position of trying to show change within a paradigm where measurements are not easily taken. This has created frustration amongst Māori providers who face losing their funding because of an inability to report measurable outcomes using a framework that does not apply to their culture.

text: Developing a kaupapa Māori evaluation model – one size fits all? Health statistics in Aotearoa (New Zealand) highlight that Māori, the indigenous people Aotearoa have poorer health than non- Māori. In response to the statistics a number of Māori health providers have established services that address specific areas of need in their regions. Initially there were minimal accountability requirements of providers. However, changes in the health system now mean that groups wanting to establish a new service must provide accountability measures before, during and after the funding has been allocated. As a result providers need to develop a rationale behind their decisions and assess the measure of change that has taken place as a result of the service or programme to ensure continued funding. The requirements reflect the dominant Western paradigm in which health promotion is understood to be about producing specific quantifiable behaviour changes in individuals. Māori health providers on the other hand have tended to take a holistic approach to health. Thus they have found themselves in the position of trying to show change within a paradigm where measurements are not easily taken. This has created frustration amongst Māori providers who face losing their funding because of an inability to report measurable outcomes using a framework that does not apply to their culture.

year: 2002