title: A bilinear pairing based secure data aggregation scheme for WSNs

authors: Kumar, Vimal

subjects: computer science

abstract: End to end secure data aggregation scheme for wireless sensor networks that are based on public key cryptography generally use elliptic curves. However elliptic curve based protocols require messages to be mapped to elliptic curves before performing any operations and finally reverse mapped to retrieve the message back. No mapping function, however, which is both homomorphic and has an efficient reverse mapping function is currently known. The mapping functions used in many previous protocols require brute forcing to reverse map the message from a point on the elliptic curve. This solution may be feasible on a base station with unlimited energy and processing power but it means that decrypting becomes very inefficient on ordinary sensors. We propose a secure data aggregation algorithm based on bilinear pairing that avoids this problem and makes decrypting data feasible on ordinary sensors.

text: A bilinear pairing based secure data aggregation scheme for WSNs End to end secure data aggregation scheme for wireless sensor networks that are based on public key cryptography generally use elliptic curves. However elliptic curve based protocols require messages to be mapped to elliptic curves before performing any operations and finally reverse mapped to retrieve the message back. No mapping function, however, which is both homomorphic and has an efficient reverse mapping function is currently known. The mapping functions used in many previous protocols require brute forcing to reverse map the message from a point on the elliptic curve. This solution may be feasible on a base station with unlimited energy and processing power but it means that decrypting becomes very inefficient on ordinary sensors. We propose a secure data aggregation algorithm based on bilinear pairing that avoids this problem and makes decrypting data feasible on ordinary sensors.

year: 2019

title: Return on investment: Investigating managerial preferences for alternative return on investment reports

authors: Lys, Brendan John

subjects: ROI

abstract: Responses of 32 Officers and 1 Non Commissioned Officer, of the Royal New Zealand Navy, to three return on investment (ROI) training reports were investigated. The three report types were presented as a function of two ROI calculations: Critical Outcome Technique, and Utility Analysis - with Utility Analysis being used as the basis for two of the three reports. Participants were placed into one of three groups, each group consisted of 11 participants. Each participant group was presented with one of the three report types. Responses from participants were gained using a survey instrument for two constructs: perceived usefulness, and perceived understanding and clarity. The results of this study replicated the findings of previous studies in this area (i.e. Carson, Becker & Henderson, 1998; Macan & Foster, 2004). An analysis of quantitative data using Kruskal-Wallis statistical test failed to show significantly different perceptions of either perceived usefulness, or perceived understanding and clarity between the three groups. While the presented reports lacked high levels of support from participants, the findings of Latham and Whyte’s study (1994) are brought further into question (i.e. Cronshaw, 1997; Macan & Foster, 2004) as utility analysis based reports did not negatively influence participants on the uptake of the hypothetical training initiative. Content analysis of the qualitative data, revealed a number of potential factors which may have caused a lack of significance between report type preferences. Most critically these causes may not be limited to this this study alone, but may have implications for both previous and future studies into ROI acceptance.

text: Return on investment: Investigating managerial preferences for alternative return on investment reports Responses of 32 Officers and 1 Non Commissioned Officer, of the Royal New Zealand Navy, to three return on investment (ROI) training reports were investigated. The three report types were presented as a function of two ROI calculations: Critical Outcome Technique, and Utility Analysis - with Utility Analysis being used as the basis for two of the three reports. Participants were placed into one of three groups, each group consisted of 11 participants. Each participant group was presented with one of the three report types. Responses from participants were gained using a survey instrument for two constructs: perceived usefulness, and perceived understanding and clarity. The results of this study replicated the findings of previous studies in this area (i.e. Carson, Becker & Henderson, 1998; Macan & Foster, 2004). An analysis of quantitative data using Kruskal-Wallis statistical test failed to show significantly different perceptions of either perceived usefulness, or perceived understanding and clarity between the three groups. While the presented reports lacked high levels of support from participants, the findings of Latham and Whyte’s study (1994) are brought further into question (i.e. Cronshaw, 1997; Macan & Foster, 2004) as utility analysis based reports did not negatively influence participants on the uptake of the hypothetical training initiative. Content analysis of the qualitative data, revealed a number of potential factors which may have caused a lack of significance between report type preferences. Most critically these causes may not be limited to this this study alone, but may have implications for both previous and future studies into ROI acceptance.

year: 2011

title: Māori and Psychology Research Unit (MPRU) annual report 2018-2021

authors: Masters-Awatere, Bridgette

subjects: Māori and Psychology Research Unit

abstract: Annual report of the Māori and Psychology Research Unit (MPRU) 2018-2021. The unit was established in August of 1997. The unit is designed to provide a catalyst and support network for enhancing research concerning the psychological needs, aspirations, and priorities of Māori. The MPRU is well situated to draw together skilled and experienced interdisciplinary research groups by networking and establishing working relationships with staff and students within the Division of Arts, Law, Psychology and Social Science, the University, and the wider community.

text: Māori and Psychology Research Unit (MPRU) annual report 2018-2021 Annual report of the Māori and Psychology Research Unit (MPRU) 2018-2021. The unit was established in August of 1997. The unit is designed to provide a catalyst and support network for enhancing research concerning the psychological needs, aspirations, and priorities of Māori. The MPRU is well situated to draw together skilled and experienced interdisciplinary research groups by networking and establishing working relationships with staff and students within the Division of Arts, Law, Psychology and Social Science, the University, and the wider community.

year: 2022-09-02