title: Microwave aquametry of roasting coffee beans

authors: Kelly, Cameron Brian Desmond

abstract: We constructed a fluidsed-bed coffee roaster with a roast chamber that is also a microwave cavity in order to measure water content of roasting coffee. We identify factors involved in roasting that influence the data. We present a new approach to the problem of interpreting measurements that are noisy as a result of bean movement in the fluidised bed. Cleaned data permit aquametry throughout the roast. We seek the ideal point when an expert roaster would terminate the roast, but this measurement found no events or conditions that signal the ideal endpoint for a roast.

text: Microwave aquametry of roasting coffee beans We constructed a fluidsed-bed coffee roaster with a roast chamber that is also a microwave cavity in order to measure water content of roasting coffee. We identify factors involved in roasting that influence the data. We present a new approach to the problem of interpreting measurements that are noisy as a result of bean movement in the fluidised bed. Cleaned data permit aquametry throughout the roast. We seek the ideal point when an expert roaster would terminate the roast, but this measurement found no events or conditions that signal the ideal endpoint for a roast.

year: 2016

title: Whole genome resequencing reveals origins and global invasion pathways of the Japanese beetle Popillia japonica

authors: Funari, Rebecca

subjects: phylogeography

abstract: Invasive species are an increasing global threat given their ability to rapidly spread and adapt to novel environments. The adverse ecological and economic impacts of invasive species highlight the critical need to understand the mechanisms that underpin invasion processes and success. The Japanese beetle, Popillia japonica, is an invasive pest of remarkable interest, as it feeds on hundreds of economically valuable plant species. It has been expanding outside of its native range in Japan since the first decades of the 20th century, colonising large areas of North America and, more recently, Europe. Here, we compared whole-genome resequencing data from individuals encompassing the entire species distribution to study the geographic differentiation of P. japonica populations and reconstruct expansion routes from Japan to the USA and Europe. We found six genomically distinguishable clusters, corresponding to the approximate colonisation areas at a continental scale. Our analysis supported an ancestral divergence between South and North/Central Japan, with the latter being the source of the initial invasion to the USA. Coalescent simulations supported independent bridgehead events from the USA to the Azores and Italy. We also investigated possible signals of selection to better understand the adaptive mechanisms that underlie the invasion success of P. japonica. However, the absence of strong selection signatures suggested that the beetle's adaptive ability might be embedded in pre-existing genomic features. Our comprehensive genome-wide dataset allowed a detailed inference of the invasion process and may be useful in determining the origin of P. japonica individuals in future invasion events.

text: Whole genome resequencing reveals origins and global invasion pathways of the Japanese beetle Popillia japonica Invasive species are an increasing global threat given their ability to rapidly spread and adapt to novel environments. The adverse ecological and economic impacts of invasive species highlight the critical need to understand the mechanisms that underpin invasion processes and success. The Japanese beetle, Popillia japonica, is an invasive pest of remarkable interest, as it feeds on hundreds of economically valuable plant species. It has been expanding outside of its native range in Japan since the first decades of the 20th century, colonising large areas of North America and, more recently, Europe. Here, we compared whole-genome resequencing data from individuals encompassing the entire species distribution to study the geographic differentiation of P. japonica populations and reconstruct expansion routes from Japan to the USA and Europe. We found six genomically distinguishable clusters, corresponding to the approximate colonisation areas at a continental scale. Our analysis supported an ancestral divergence between South and North/Central Japan, with the latter being the source of the initial invasion to the USA. Coalescent simulations supported independent bridgehead events from the USA to the Azores and Italy. We also investigated possible signals of selection to better understand the adaptive mechanisms that underlie the invasion success of P. japonica. However, the absence of strong selection signatures suggested that the beetle's adaptive ability might be embedded in pre-existing genomic features. Our comprehensive genome-wide dataset allowed a detailed inference of the invasion process and may be useful in determining the origin of P. japonica individuals in future invasion events.

year: 2025

title: An evaluation of Te Rau Puawai workforce 100: Evaluation overview

authors: Nikora, Linda Waimarie

subjects: Maori students

abstract: In July 2001, the Maori & Psychology Research Unit of the University of Waikato was asked to conduct an evaluation of the Te Rau Puawai programme, a joint venture between the former Health Funding Authority and Massey University. The overall goal of the programme is to contribute at least 100 Maori graduates to the Maori mental health workforce within a five year period. The overall aim of the evaluation was to provide the Ministry of Health with a clearer understanding of the programme including: the perceived critical success factors, the barriers if any regarding Te Rau Puawai, the impact of the programme, the extent to which the programme may be transferable, gaps in the programme, and suggested improvements. Through archival search, questionnaire surveys and interviews, evaluative data was collected from major stakeholders in the Te Rau Puawai programme.

text: An evaluation of Te Rau Puawai workforce 100: Evaluation overview In July 2001, the Maori & Psychology Research Unit of the University of Waikato was asked to conduct an evaluation of the Te Rau Puawai programme, a joint venture between the former Health Funding Authority and Massey University. The overall goal of the programme is to contribute at least 100 Maori graduates to the Maori mental health workforce within a five year period. The overall aim of the evaluation was to provide the Ministry of Health with a clearer understanding of the programme including: the perceived critical success factors, the barriers if any regarding Te Rau Puawai, the impact of the programme, the extent to which the programme may be transferable, gaps in the programme, and suggested improvements. Through archival search, questionnaire surveys and interviews, evaluative data was collected from major stakeholders in the Te Rau Puawai programme.

year: 2002-05-01