title: Privacy-preserving encoding for cloud computing

authors: Will, Mark Antony

subjects: Homomorphic Encryption

abstract: Information in the cloud is under constant attack from cyber criminals as profitability increases; user privacy is also at risk with data being mined for monetary value – the new gold. A single leak could have devastating consequences for a person or organisation, yet users have limited control over their privacy. It is becoming clear that the current model for public cloud computing is flawed, where cloud vendors and their employees can no longer be trusted to protect user data. Privacy-preserving computation in the cloud keeps data private at all times but still remains functional, thus returning control of data back to users. The cloud could then perform operations using data that it cannot comprehend. The end-user would then be able to retrieve the results from the cloud and unlock the real answers.
Homomorphic encryption is a solution for privacy-preserving processing, allowing computation over cipher text. At the time of writing, a fully homomorphic system allows arbitrary operations but requires minutes to compute an operation, whereas partially homomorphic encryption can only support a single operation, meaning it cannot be a generic solution to privacy-preserving computing. Another solution is multi-party computation, which uses a distributed approach built upon homomorphic encryption but currently suffers other limitations like reusability and lacks the ability to be truly dynamic.
The primary objective of this research is to design a solution for the cloud that offers privacy-preserving data computation but provides performance and flexibility. A novel approach for multi-party computation is developed, where the combination of encoding and distribution helps provide the balance between security, performance and utility. Privacy is maintained by each distributed entity only receiving a small portion of the actual data through encoding, where attempting to brute-force the data results in a vast number of possibilities, similar to encryption. Functions are defined with universal or custom logic and are computed quickly, as the performance overhead is no longer computational but network latency. A cloud voting application was used for analysis between existing solutions and the novel approach taken by this research, which is able to add thousands of votes per minute, giving practical privacy-preserving processing in the cloud.

text: Privacy-preserving encoding for cloud computing Information in the cloud is under constant attack from cyber criminals as profitability increases; user privacy is also at risk with data being mined for monetary value – the new gold. A single leak could have devastating consequences for a person or organisation, yet users have limited control over their privacy. It is becoming clear that the current model for public cloud computing is flawed, where cloud vendors and their employees can no longer be trusted to protect user data. Privacy-preserving computation in the cloud keeps data private at all times but still remains functional, thus returning control of data back to users. The cloud could then perform operations using data that it cannot comprehend. The end-user would then be able to retrieve the results from the cloud and unlock the real answers.
Homomorphic encryption is a solution for privacy-preserving processing, allowing computation over cipher text. At the time of writing, a fully homomorphic system allows arbitrary operations but requires minutes to compute an operation, whereas partially homomorphic encryption can only support a single operation, meaning it cannot be a generic solution to privacy-preserving computing. Another solution is multi-party computation, which uses a distributed approach built upon homomorphic encryption but currently suffers other limitations like reusability and lacks the ability to be truly dynamic.
The primary objective of this research is to design a solution for the cloud that offers privacy-preserving data computation but provides performance and flexibility. A novel approach for multi-party computation is developed, where the combination of encoding and distribution helps provide the balance between security, performance and utility. Privacy is maintained by each distributed entity only receiving a small portion of the actual data through encoding, where attempting to brute-force the data results in a vast number of possibilities, similar to encryption. Functions are defined with universal or custom logic and are computed quickly, as the performance overhead is no longer computational but network latency. A cloud voting application was used for analysis between existing solutions and the novel approach taken by this research, which is able to add thousands of votes per minute, giving practical privacy-preserving processing in the cloud.

year: 2019

title: Sites of value? Discourses of religion and spirituality in the production of a New Zealand film and television series

authors: Hardy, Ann

subjects: New Zealand

abstract: This interdisciplinary study examines the nature of the discourses of religion and spirituality circulating in and around the production of a feature film, Saving Grace and a television mini-series, The Chosen, made and released in New Zealand during the period 1997-1999. Its interest is in the manner in which discourses of religion and spirituality are enlisted and modified in the process of mediation for public screening.
Drawing on various insights derived from post-structuralist theory, and informed by recent work in the sociology of religion, the study operates within a modified tripartite model which balances information about the production context of the projects with text-interpretation, and analysis of media constructions (or reviews) of the text. Initially, a description of the complex socio-historical context in which the texts are situated, both globally and locally, is developed. The manner in which selected members of the production teams for the two projects understood meanings around religion and spirituality is then explored through the discursive analysis of material gained by the process of depth-interviewing. The production of the projects was followed over an extended time-duration, in order to ascertain whether those understandings changed under the many influences constituting the conditions of production. The second aspect of the analysis is interpretation of the texts themselves through an analysis of their narrative and generic structures, as well as their discursive content. Finally, responses and evaluations of the text by, in the case of Saving Grace, a series of 'interim' audiences, and for both projects, by media reviewers, are outlined and analyzed.
On the basis of this research it is argued that investigation of the production of these projects provides valuable insights both into the changing nature of constructions of religion and spirituality within New Zealand culture and into the tensions involved in their textual encoding. These insights are to be found not just in the texts themselves, where professional norms of 'good' production, constrained and limited the ways in which discourses of religion and spirituality could be encoded, but also in the 'personal' speech of the research participants, marked both by a strong disapproval of institutional religiosity, and a wide-spread interest in informal varieties of spirituality.

text: Sites of value? Discourses of religion and spirituality in the production of a New Zealand film and television series This interdisciplinary study examines the nature of the discourses of religion and spirituality circulating in and around the production of a feature film, Saving Grace and a television mini-series, The Chosen, made and released in New Zealand during the period 1997-1999. Its interest is in the manner in which discourses of religion and spirituality are enlisted and modified in the process of mediation for public screening.
Drawing on various insights derived from post-structuralist theory, and informed by recent work in the sociology of religion, the study operates within a modified tripartite model which balances information about the production context of the projects with text-interpretation, and analysis of media constructions (or reviews) of the text. Initially, a description of the complex socio-historical context in which the texts are situated, both globally and locally, is developed. The manner in which selected members of the production teams for the two projects understood meanings around religion and spirituality is then explored through the discursive analysis of material gained by the process of depth-interviewing. The production of the projects was followed over an extended time-duration, in order to ascertain whether those understandings changed under the many influences constituting the conditions of production. The second aspect of the analysis is interpretation of the texts themselves through an analysis of their narrative and generic structures, as well as their discursive content. Finally, responses and evaluations of the text by, in the case of Saving Grace, a series of 'interim' audiences, and for both projects, by media reviewers, are outlined and analyzed.
On the basis of this research it is argued that investigation of the production of these projects provides valuable insights both into the changing nature of constructions of religion and spirituality within New Zealand culture and into the tensions involved in their textual encoding. These insights are to be found not just in the texts themselves, where professional norms of 'good' production, constrained and limited the ways in which discourses of religion and spirituality could be encoded, but also in the 'personal' speech of the research participants, marked both by a strong disapproval of institutional religiosity, and a wide-spread interest in informal varieties of spirituality.

year: 2003

title: Ngā kanohi hou – identifying and exploring the issues: Experiences of an intern

authors: Masters-Awatere, Bridgette

subjects: Maori

abstract: The current paper reflects upon the discovery of an intern from the post graduate diploma in community psychology programme (PGDipPsych (Com). The PGDipPsych (Com) is currently facilitated through the University of Waikato School of Arts and Social Sciences, Psychology Department. This journey of discovery is presented from the perspective of a Māori student who is employed in a mainstream public health organisation. The perspective of a person who is new to the workforce, and the “real world,” who views the surrounding environment with a pair of fresh eyes.

This paper highlights the importance of the internship period as it supports the student who moves from a structured environment with a strong emphasis on theory, towards a competitive, semi structured environment that is driven by deadlines, budgets and contracts.

Factors identified are the demands of Māori communities on Māori health researchers, supportive versus competitive environments, the benefits and drawbacks of being based in a mainstream health organisation, and the future direction of Māori health research. It is hoped that the current paper will encourage further discussion about the future direction of a diploma programme such as the PGDipPsychCom for Māori graduates of a New Zealand tertiary institution.

text: Ngā kanohi hou – identifying and exploring the issues: Experiences of an intern The current paper reflects upon the discovery of an intern from the post graduate diploma in community psychology programme (PGDipPsych (Com). The PGDipPsych (Com) is currently facilitated through the University of Waikato School of Arts and Social Sciences, Psychology Department. This journey of discovery is presented from the perspective of a Māori student who is employed in a mainstream public health organisation. The perspective of a person who is new to the workforce, and the “real world,” who views the surrounding environment with a pair of fresh eyes.

This paper highlights the importance of the internship period as it supports the student who moves from a structured environment with a strong emphasis on theory, towards a competitive, semi structured environment that is driven by deadlines, budgets and contracts.

Factors identified are the demands of Māori communities on Māori health researchers, supportive versus competitive environments, the benefits and drawbacks of being based in a mainstream health organisation, and the future direction of Māori health research. It is hoped that the current paper will encourage further discussion about the future direction of a diploma programme such as the PGDipPsychCom for Māori graduates of a New Zealand tertiary institution.

year: 1999