title: Could ‘Isochoric Freezing’ revolutionise food preservation?

authors: Fikiin, K

subjects: chilling

abstract: The present article responds to the food engineering community’s growing interest in an emerging and lauded approach to food preservation, popularised by its developers as ‘isochoric freezing’. A strong campaign in the scientific literature and mass media has recently promoted this technique as a universal replacement for traditional food freezing and the frozen supply chain by highlighting a number of alleged advantages of ‘isochoric freezing’. Some of these claims therefore require a more neutral and critical assessment against the background of the today’s state of the art in food freezing technologies. Hence, this article spotlights several concerns regarding the plausibility, energy expenditure, resource efficiency, process rate, throughput and safety of ‘isochoric freezing’, as well as the correct use of food refrigeration terminology. The aspects considered are intended to make food scientists, technologists and engineers more aware of the real capabilities and the application perspectives of this still immature mode of refrigerated food processing.

text: Could ‘Isochoric Freezing’ revolutionise food preservation? The present article responds to the food engineering community’s growing interest in an emerging and lauded approach to food preservation, popularised by its developers as ‘isochoric freezing’. A strong campaign in the scientific literature and mass media has recently promoted this technique as a universal replacement for traditional food freezing and the frozen supply chain by highlighting a number of alleged advantages of ‘isochoric freezing’. Some of these claims therefore require a more neutral and critical assessment against the background of the today’s state of the art in food freezing technologies. Hence, this article spotlights several concerns regarding the plausibility, energy expenditure, resource efficiency, process rate, throughput and safety of ‘isochoric freezing’, as well as the correct use of food refrigeration terminology. The aspects considered are intended to make food scientists, technologists and engineers more aware of the real capabilities and the application perspectives of this still immature mode of refrigerated food processing.

year: 2024

title: Automating vocabulary tests and enriching online courses for language learners

authors: König, Jemma Lynette

subjects: Computer science

abstract: The past decade has seen a massive growth in online academic courses, most of which are offered in the English language. However, although more people speak English as their second language than as their first, online course providers do not offer language assistance. Providing online learners with language resources would allow them to both learn about a subject through a foreign language and learn the foreign language through the subject. This is referred to as “content-based language learning”. 

Supporting content-based language learning using online courses raises several challenges, three of which are addressed in this thesis. First, courses teach subjects in particular domains, but supporting domain-specific language requires knowledge of specialised vocabulary. This thesis develops an automated approach to generating domain-specific corpora and wordlists, extracting domain-specific vocabulary in a way that can be applied to any online course. 

Second, acquiring and measuring language come hand-in-hand. Tools that help learners acquire new language should also include methods for testing. This thesis takes an existing vocabulary test and automates it. This has two main advantages: it requires no assumed knowledge of the language, allowing automatic generation of vocabulary tests; and the tests reflect the wordlists used to create them, allowing them to be targeted toward a particular domain.

Finally, for content-based language learning to be used successfully, the language components must be smoothly integrated into courses without disturbing the original content. Furthermore, vocabulary support should include multi-word lexical items as well as single words. The thesis describes a tool that enhances online course content, via a browser extension. It is completely automated, though would also lend itself to selective teacher intervention. It is illustrated here with reference to courses offered by the FutureLearn MOOC consortium.

text: Automating vocabulary tests and enriching online courses for language learners The past decade has seen a massive growth in online academic courses, most of which are offered in the English language. However, although more people speak English as their second language than as their first, online course providers do not offer language assistance. Providing online learners with language resources would allow them to both learn about a subject through a foreign language and learn the foreign language through the subject. This is referred to as “content-based language learning”. 

Supporting content-based language learning using online courses raises several challenges, three of which are addressed in this thesis. First, courses teach subjects in particular domains, but supporting domain-specific language requires knowledge of specialised vocabulary. This thesis develops an automated approach to generating domain-specific corpora and wordlists, extracting domain-specific vocabulary in a way that can be applied to any online course. 

Second, acquiring and measuring language come hand-in-hand. Tools that help learners acquire new language should also include methods for testing. This thesis takes an existing vocabulary test and automates it. This has two main advantages: it requires no assumed knowledge of the language, allowing automatic generation of vocabulary tests; and the tests reflect the wordlists used to create them, allowing them to be targeted toward a particular domain.

Finally, for content-based language learning to be used successfully, the language components must be smoothly integrated into courses without disturbing the original content. Furthermore, vocabulary support should include multi-word lexical items as well as single words. The thesis describes a tool that enhances online course content, via a browser extension. It is completely automated, though would also lend itself to selective teacher intervention. It is illustrated here with reference to courses offered by the FutureLearn MOOC consortium.

year: 2019

title: Incorporating indigenous values in corporate social responsibility reports

authors: Schneider, Annika Barbara Sabine

subjects: corporate social responsibility

abstract: Purpose– The purpose of this paper is to show how a major state-owned enterprise in New Zealand uses its annual report to promote the image of an organisation concerned with the local community including Māori, the indigenous people of New Zealand, Māori values and their relationship with the environment.
Design/methodology/approach – This longitudinal single case study of Mighty River Power Limited spans the period 2000 to 2009. It involves detailed examination of the narrative disclosures contained in the annual reports, including photographs, over the period of the study to determine whether Mighty River Power used the annual report to present a favourable image to the organisation’s stakeholders. Indigenous partnerships between the organisation and Māori trusts were also investigated to determine how these contributed to the corporate identity promoted in the annual reports.
Findings – The analysis found that annual report was used to promote the image of an organisation upholding the Māori value of kaitiakitanga as part of its social responsibility to the local community and environment. Māori partnerships and community environmental group sponsorship were featured extensively in the images and narratives, with specific reference to indigenous values.
Originality/value – This paper builds upon previous literature in the field of corporate social responsibility in annual reports and extends it to the state-owned enterprise sector in New Zealand, focusing specifically on the relationship between the entity and the indigenous community in which it operates.

text: Incorporating indigenous values in corporate social responsibility reports Purpose– The purpose of this paper is to show how a major state-owned enterprise in New Zealand uses its annual report to promote the image of an organisation concerned with the local community including Māori, the indigenous people of New Zealand, Māori values and their relationship with the environment.
Design/methodology/approach – This longitudinal single case study of Mighty River Power Limited spans the period 2000 to 2009. It involves detailed examination of the narrative disclosures contained in the annual reports, including photographs, over the period of the study to determine whether Mighty River Power used the annual report to present a favourable image to the organisation’s stakeholders. Indigenous partnerships between the organisation and Māori trusts were also investigated to determine how these contributed to the corporate identity promoted in the annual reports.
Findings – The analysis found that annual report was used to promote the image of an organisation upholding the Māori value of kaitiakitanga as part of its social responsibility to the local community and environment. Māori partnerships and community environmental group sponsorship were featured extensively in the images and narratives, with specific reference to indigenous values.
Originality/value – This paper builds upon previous literature in the field of corporate social responsibility in annual reports and extends it to the state-owned enterprise sector in New Zealand, focusing specifically on the relationship between the entity and the indigenous community in which it operates.

year: 2012