title: Instabilities of the cortex during natural sleep

authors: Wilson, Marcus T.

subjects: cortex

abstract: The electrical signals generated by the human cortex during sleep have been widely studied over the last 50 years. The electroencephalogram (EEG) observed during natural sleep exhibits structures with frequencies from 0.5 Hz to over 50 Hz and complicated waveforms such as spindles and K-complexes. Understanding has been enhanced by comprehensive intra-cellular measurements from the cortex and thalamus such as those performed by Steriade et al [1] and Sanchez-Vives and McCormick [2]. Models of the cerebal cortex have been developed in order to explain many of the features observed. These can be classified in terms of individual neuron models or collective models. Since we wish to compare predictions with gross features of the human EEG, we choose a collective model, where we average over a population of neurons in macrocolumns. A number of models of this form have been developed recently; that developed at Waikato draws from a number of different sources to describe the temporal and spatial dynamics of the system.

text: Instabilities of the cortex during natural sleep The electrical signals generated by the human cortex during sleep have been widely studied over the last 50 years. The electroencephalogram (EEG) observed during natural sleep exhibits structures with frequencies from 0.5 Hz to over 50 Hz and complicated waveforms such as spindles and K-complexes. Understanding has been enhanced by comprehensive intra-cellular measurements from the cortex and thalamus such as those performed by Steriade et al [1] and Sanchez-Vives and McCormick [2]. Models of the cerebal cortex have been developed in order to explain many of the features observed. These can be classified in terms of individual neuron models or collective models. Since we wish to compare predictions with gross features of the human EEG, we choose a collective model, where we average over a population of neurons in macrocolumns. A number of models of this form have been developed recently; that developed at Waikato draws from a number of different sources to describe the temporal and spatial dynamics of the system.

year: 2005

title: Artificial Intelligence Attitudes Inventory (AIAI): Development and validation using Rasch methodology

authors: Krägeloh, Christian U.

subjects: psychology

abstract: With the rapid advancements in artificial intelligence (AI), it is vital to develop psychometrically sound measures of public attitudes toward this technology. The present study aimed to refine a pool of candidate items to create a concise yet robust inventory for assessing attitudes toward AI. Using a dataset of 604 participants from the general population of the United States, a pool of 96 candidate items was subjected to iterative Rasch analysis to reduce the number of items while ensuring psychometric robustness. The resulting scale, named the Artificial Intelligence Attitudes Inventory (AIAI), consists of two 8-item subscales measuring positive and negative attitudes toward AI. Analyses revealed that these subscales are distinct constructs rather than opposites on a single continuum, and they are only weakly related to psychological distress. The AIAI provides a concise yet comprehensive measure of positive and negative attitudes toward AI that can be efficiently administered alongside other measures. The findings underscore the multifaceted nature of public perceptions of AI and highlight the need for further research into the profiles and determinants of these attitudes. As AI continues to shape our world, the AIAI offers a valuable tool for understanding and monitoring public sentiment toward this transformative technology.

text: Artificial Intelligence Attitudes Inventory (AIAI): Development and validation using Rasch methodology With the rapid advancements in artificial intelligence (AI), it is vital to develop psychometrically sound measures of public attitudes toward this technology. The present study aimed to refine a pool of candidate items to create a concise yet robust inventory for assessing attitudes toward AI. Using a dataset of 604 participants from the general population of the United States, a pool of 96 candidate items was subjected to iterative Rasch analysis to reduce the number of items while ensuring psychometric robustness. The resulting scale, named the Artificial Intelligence Attitudes Inventory (AIAI), consists of two 8-item subscales measuring positive and negative attitudes toward AI. Analyses revealed that these subscales are distinct constructs rather than opposites on a single continuum, and they are only weakly related to psychological distress. The AIAI provides a concise yet comprehensive measure of positive and negative attitudes toward AI that can be efficiently administered alongside other measures. The findings underscore the multifaceted nature of public perceptions of AI and highlight the need for further research into the profiles and determinants of these attitudes. As AI continues to shape our world, the AIAI offers a valuable tool for understanding and monitoring public sentiment toward this transformative technology.

year: 2024-05-14

title: Te Poho o Te Arawa: Te Mana Whenua o Ngāti Whakaue ki Maketū

authors: Potaka, Ngahu

subjects: Ngāti Whakaue

abstract: Maketū is a small coastal town in the Bay of Plenty and is the final resting place of the Te Arawa canoe, the ancestral waka of the Te Arawa people. This is the home of Ngāti Whakaue ki Maketū a coastal hapū of the tribe Ngāti Whakaue from the Te Arawa confederation of tribes. Ngāti Whakaue ki Maketū is actually a collection of smaller hapū who descend from the union of their ancestor Whakaue Kaipapa and his wife Rangiuru, and they trace their overall decent from the celebrated chief Tama te Kapua. It is on their ancestral land in Maketū that Ngāti Whakaue ki Maketū have resided and established their mana whenua (tribal authority) for over 170 years. In that time they have faced many internal and external challenges to their mana whenua including military engagement, political maneuvering, and other social issues.

This thesis traces the historical origins and mana whenua of Ngāti Whakaue ki Maketū and analyses the various key components that combine to ensure Ngāti Whakaue ki Maketū maintain mana whenua across their tribal lands. This thesis also explores how mana whenua is a vehicle for maintaining tribal authority and well being for Ngāti Whakaue ki Maketū. Part of this study is the creation of a mana whenua strategic plan that will help Ngāti Whakaue ki Maketū maintain and secure mana whenua in Maketū for future generations.

It is the proposition of this thesis that mana whenua has, is and will always play an important part in the social identity and fabric of Ngati Whakaue ki Maketū. However as Ngāti Whakaue ki Maketū stand at the dawn of a new era, it is important for this related group to understand how mana whenua operates, and can be nurtured as a means of protection to ensure the survival of Ngāti Whakaue ki Maketū in this ever changing world.

text: Te Poho o Te Arawa: Te Mana Whenua o Ngāti Whakaue ki Maketū Maketū is a small coastal town in the Bay of Plenty and is the final resting place of the Te Arawa canoe, the ancestral waka of the Te Arawa people. This is the home of Ngāti Whakaue ki Maketū a coastal hapū of the tribe Ngāti Whakaue from the Te Arawa confederation of tribes. Ngāti Whakaue ki Maketū is actually a collection of smaller hapū who descend from the union of their ancestor Whakaue Kaipapa and his wife Rangiuru, and they trace their overall decent from the celebrated chief Tama te Kapua. It is on their ancestral land in Maketū that Ngāti Whakaue ki Maketū have resided and established their mana whenua (tribal authority) for over 170 years. In that time they have faced many internal and external challenges to their mana whenua including military engagement, political maneuvering, and other social issues.

This thesis traces the historical origins and mana whenua of Ngāti Whakaue ki Maketū and analyses the various key components that combine to ensure Ngāti Whakaue ki Maketū maintain mana whenua across their tribal lands. This thesis also explores how mana whenua is a vehicle for maintaining tribal authority and well being for Ngāti Whakaue ki Maketū. Part of this study is the creation of a mana whenua strategic plan that will help Ngāti Whakaue ki Maketū maintain and secure mana whenua in Maketū for future generations.

It is the proposition of this thesis that mana whenua has, is and will always play an important part in the social identity and fabric of Ngati Whakaue ki Maketū. However as Ngāti Whakaue ki Maketū stand at the dawn of a new era, it is important for this related group to understand how mana whenua operates, and can be nurtured as a means of protection to ensure the survival of Ngāti Whakaue ki Maketū in this ever changing world.

year: 2014