title: Simulation with real world network stacks

authors: Jansen, Sam

subjects: computer science

abstract: Network simulation is used widely in network research to test new protocols, modifications to existing protocols and new ideas. The tool used in many cases is ns-2. The nature of the ns-2 protocols means that they are often based on theoretical models that might not behave in the same way as real networks. This paper presents the Network Simulation Cradle which allows real world network stacks to be used in a wrapper that allows the stacks protocols to be used in the ns-2 network simulator. The network stacks from the open source operating systems Linux, FreeBSD and OpenBSD are included in the simulation cradle as well as a stack designed for embedded systems, lwIP. Our results show that ns-2's TCP implementations do not match observed behaviour from real machines in some respects and using the Network Simulation Cradle produces results closer to real world network stacks.

text: Simulation with real world network stacks Network simulation is used widely in network research to test new protocols, modifications to existing protocols and new ideas. The tool used in many cases is ns-2. The nature of the ns-2 protocols means that they are often based on theoretical models that might not behave in the same way as real networks. This paper presents the Network Simulation Cradle which allows real world network stacks to be used in a wrapper that allows the stacks protocols to be used in the ns-2 network simulator. The network stacks from the open source operating systems Linux, FreeBSD and OpenBSD are included in the simulation cradle as well as a stack designed for embedded systems, lwIP. Our results show that ns-2's TCP implementations do not match observed behaviour from real machines in some respects and using the Network Simulation Cradle produces results closer to real world network stacks.

year: 2005

title: Secure FPGA as a Service - Towards Secure Data Processing by Physicalizing the Cloud

authors: Will, Mark Antony

subjects: Science & Technology

abstract: Securely processing data in the cloud is still a difficult problem, even with homomorphic encryption and other privacy preserving schemes. Hardware solutions provide additional layers of security and greater performance over their software alternatives. However by definition the cloud should be flexible and adaptive, often viewed as abstracting services from products. By creating services reliant on custom hardware, the core essence of the cloud is lost. FPGAs bridge this gap between software and hardware with programmable logic, allowing the cloud to remain abstract. FPGA as a Service (FaaS) has been proposed for a greener cloud, but not for secure data processing. This paper explores the possibility of Secure FaaS in the cloud for privacy preserving data processing, describes the technologies required, identifies use cases, and highlights potential challenges.

text: Secure FPGA as a Service - Towards Secure Data Processing by Physicalizing the Cloud Securely processing data in the cloud is still a difficult problem, even with homomorphic encryption and other privacy preserving schemes. Hardware solutions provide additional layers of security and greater performance over their software alternatives. However by definition the cloud should be flexible and adaptive, often viewed as abstracting services from products. By creating services reliant on custom hardware, the core essence of the cloud is lost. FPGAs bridge this gap between software and hardware with programmable logic, allowing the cloud to remain abstract. FPGA as a Service (FaaS) has been proposed for a greener cloud, but not for secure data processing. This paper explores the possibility of Secure FaaS in the cloud for privacy preserving data processing, describes the technologies required, identifies use cases, and highlights potential challenges.

year: 2017

title: A life-history analysis of achievement of Māori and Pacific Island students at the Church College of New Zealand

authors: Solomon, Tereapii Elinora

subjects: Church College

abstract: The Church College of New Zealand is a private co-educational secondary school located near Hamilton, New Zealand and is sponsored by the Church of Jesus Christ of Latter-day Saints.  Since its opening in 1958, it has hosted a large population of Polynesian students, in particular Māori.  The questions that this thesis addresses centre on the nature, history and reasons for what seems to be a disproportionately higher level of achievement amongst Māori and Pacific Island students at Church College than in New Zealand more broadly.  Through a life-history approach to research, this thesis provides an overview of the rich history behind the building of the Church College, and highlights the experiences of successful graduates over three particular timeframes - 1951-1969, 1970-1989 and the 1990s.  

A major contributing factor to the success of the students at Church College is an environment where both religious and cultural values of students are reaffirmed and considered normal.  For some students, Church College provided an environment that validated what students were being taught in their own homes.  For others, it provided a refuge from a conflicted home.  With the growing pressures of social problems within the wider community for many Māori and Pacific Island families, the school environment of  the Church College was a key factor in providing stability  and security for some students at the College.

On June 29 2006, an announcement was made by leaders of the Church of Jesus Christ of Latter-day Saints of the phased out closure of Church College beginning in the year 2007 and eventually closing at the end of the year 2009. With Māori and Pacific Island students so under-represented in achievement and participation in education settings in New Zealand, the announcement of the closure provided an opportunity to highlight some of the successes experienced at the Church College of New Zealand.

text: A life-history analysis of achievement of Māori and Pacific Island students at the Church College of New Zealand The Church College of New Zealand is a private co-educational secondary school located near Hamilton, New Zealand and is sponsored by the Church of Jesus Christ of Latter-day Saints.  Since its opening in 1958, it has hosted a large population of Polynesian students, in particular Māori.  The questions that this thesis addresses centre on the nature, history and reasons for what seems to be a disproportionately higher level of achievement amongst Māori and Pacific Island students at Church College than in New Zealand more broadly.  Through a life-history approach to research, this thesis provides an overview of the rich history behind the building of the Church College, and highlights the experiences of successful graduates over three particular timeframes - 1951-1969, 1970-1989 and the 1990s.  

A major contributing factor to the success of the students at Church College is an environment where both religious and cultural values of students are reaffirmed and considered normal.  For some students, Church College provided an environment that validated what students were being taught in their own homes.  For others, it provided a refuge from a conflicted home.  With the growing pressures of social problems within the wider community for many Māori and Pacific Island families, the school environment of  the Church College was a key factor in providing stability  and security for some students at the College.

On June 29 2006, an announcement was made by leaders of the Church of Jesus Christ of Latter-day Saints of the phased out closure of Church College beginning in the year 2007 and eventually closing at the end of the year 2009. With Māori and Pacific Island students so under-represented in achievement and participation in education settings in New Zealand, the announcement of the closure provided an opportunity to highlight some of the successes experienced at the Church College of New Zealand.

year: 2008