title: Financial contagion among COVID-19 concept-related stocks in China

authors: Corbet, Shaen

subjects: Social Sciences

abstract: This paper investigates, for the first time, the presence of financial contagion among several important Chinese coronavirus concept-based stock indices during the recent COVID-19 global pandemic. We utilize a regime-switching skew-normal (RSSN) methodology to test for contagion through the correlation and coskewness channels while considering structural breaks in the different moments. Our results present evidence of contagion effects, which are robust across identified crisis and non-crisis periods, including that of the Wuhan lockdown. Our empirical results offer investors and policy-makers an additional layer of information when evaluating response mechanisms to major crises through the use of concept-based indices.

text: Financial contagion among COVID-19 concept-related stocks in China This paper investigates, for the first time, the presence of financial contagion among several important Chinese coronavirus concept-based stock indices during the recent COVID-19 global pandemic. We utilize a regime-switching skew-normal (RSSN) methodology to test for contagion through the correlation and coskewness channels while considering structural breaks in the different moments. Our results present evidence of contagion effects, which are robust across identified crisis and non-crisis periods, including that of the Wuhan lockdown. Our empirical results offer investors and policy-makers an additional layer of information when evaluating response mechanisms to major crises through the use of concept-based indices.

year: 2021-10-18

title: ESCAPADE: Encryption-type-ransomeware: system call based pattern detection

authors: Chew, Christopher J.W.

abstract: Encryption-type ransomware has risen in prominence lately as the go-to malware for threat actors aiming to compromise Android devices. In this paper, we present a ransomware detection technique based on behaviours observed in the system calls performed by the malware. We identify and present some common high-level system call behavioural patterns targeted at encryption-type ransomware and evaluate these patterns. We further present our repeatable and extensible methodology for extracting the system call log and patterns.

text: ESCAPADE: Encryption-type-ransomeware: system call based pattern detection Encryption-type ransomware has risen in prominence lately as the go-to malware for threat actors aiming to compromise Android devices. In this paper, we present a ransomware detection technique based on behaviours observed in the system calls performed by the malware. We identify and present some common high-level system call behavioural patterns targeted at encryption-type ransomware and evaluate these patterns. We further present our repeatable and extensible methodology for extracting the system call log and patterns.

year: 2020

title: Mates at the school gates:Investigating peer relationships among rangatahi Māori

authors: Knowles, Anthea Heather

subjects: school attendance

abstract: As a teacher, I have found that while some rangatahi feel connected to school, many others do not. In an attempt to reduce the gap between Māori and non-Māori educational achievement, there have been significant nationwide initiatives implemented into schools across New Zealand. These programmes have been centred mostly around improving school engagement. Despite these efforts, school attendance rates among Māori continue to decline. This thesis explores the role of peer relationships among rangatahi Māori, including how these relationships may influence various domains of engagement at school, such as participation, belonging and orientation to learning. 

This research involves focus group interviews with six rangatahi Māori aged 17-18, and in Years 12 and 13 in a small-town New Zealand High School. The wāhine Māori who contributed to the study, had been identified by the school as successfully engaged through regular attendance and participation of school activites. The findings from this study identify some critical aspects to building strong peer relationships, including: having a social space to gather, practicing manaakitanga, recognising equity, maintaining connection with each other, and welcoming humour. The rangatahi in this study value their peers and social relationships and they freely access these resources as needed. In doing so they are able to collectively critique experiences of marginalisation and acquire a collective source of resilience. The participants in this study then draw on this collective resilience during challenging situations.

text: Mates at the school gates:Investigating peer relationships among rangatahi Māori As a teacher, I have found that while some rangatahi feel connected to school, many others do not. In an attempt to reduce the gap between Māori and non-Māori educational achievement, there have been significant nationwide initiatives implemented into schools across New Zealand. These programmes have been centred mostly around improving school engagement. Despite these efforts, school attendance rates among Māori continue to decline. This thesis explores the role of peer relationships among rangatahi Māori, including how these relationships may influence various domains of engagement at school, such as participation, belonging and orientation to learning. 

This research involves focus group interviews with six rangatahi Māori aged 17-18, and in Years 12 and 13 in a small-town New Zealand High School. The wāhine Māori who contributed to the study, had been identified by the school as successfully engaged through regular attendance and participation of school activites. The findings from this study identify some critical aspects to building strong peer relationships, including: having a social space to gather, practicing manaakitanga, recognising equity, maintaining connection with each other, and welcoming humour. The rangatahi in this study value their peers and social relationships and they freely access these resources as needed. In doing so they are able to collectively critique experiences of marginalisation and acquire a collective source of resilience. The participants in this study then draw on this collective resilience during challenging situations.

year: 2019