title: The impact of background and context on car distance estimation

authors: Zhang, Fan

subjects: Distance Estimation

abstract: It is well established that people underestimate the distance to objects depicted in virtual environments and two-dimensional (2D) displays. The reasons for the underestimation are still not fully understood. It is becoming more common to use virtual environment displays for driver training and testing and so understanding the distortion of perceived space that occurs in these displays is vital. We need to know what aspects of the display cause the observer to misperceive the distance to objects in the simulated environments. The research reported in this thesis investigated how people estimate distance between themselves and a car in front of them, within a number of differing environmental contexts.  Four experiments were run using virtual environment displays of various kinds and a fifth experiment was run in a real-world setting.
It was found that distance underestimation when viewing 2D displays is very common, even when familiar objects such as cars are used as the targets. The experiments also verified that people have a greater underestimation of distance in a virtual environment compared to a real-world setting. A surprising and somewhat counterintuitive result was that people underestimate distance more when the scene depicts forward motion of the observer compared to a static view.  The research also identified a number of visual features in the display (e.g., texture information) and aspects of the display (e.g., field of view) that affected the perception of distance or that had no effect. The findings should help the designers of driver-training simulators and testing equipment to better understand the types of errors that can potentially occur when humans view two-dimensional virtual environment displays.

text: The impact of background and context on car distance estimation It is well established that people underestimate the distance to objects depicted in virtual environments and two-dimensional (2D) displays. The reasons for the underestimation are still not fully understood. It is becoming more common to use virtual environment displays for driver training and testing and so understanding the distortion of perceived space that occurs in these displays is vital. We need to know what aspects of the display cause the observer to misperceive the distance to objects in the simulated environments. The research reported in this thesis investigated how people estimate distance between themselves and a car in front of them, within a number of differing environmental contexts.  Four experiments were run using virtual environment displays of various kinds and a fifth experiment was run in a real-world setting.
It was found that distance underestimation when viewing 2D displays is very common, even when familiar objects such as cars are used as the targets. The experiments also verified that people have a greater underestimation of distance in a virtual environment compared to a real-world setting. A surprising and somewhat counterintuitive result was that people underestimate distance more when the scene depicts forward motion of the observer compared to a static view.  The research also identified a number of visual features in the display (e.g., texture information) and aspects of the display (e.g., field of view) that affected the perception of distance or that had no effect. The findings should help the designers of driver-training simulators and testing equipment to better understand the types of errors that can potentially occur when humans view two-dimensional virtual environment displays.

year: 2014

title: Exploring the landscapes of external supervision

authors: Flintoff, Vivianne

subjects: counselling supervision

abstract: External supervision offers health and social service practitioners opportunities for exploring their work, professional development, and associated relationships. Within a context outside of the workplace, the supervision relationship allegedly supports practice within the workplace. There is a range of understanding within the sectors about the relationship between supervisor and practitioner. This paper explores the potential of closer relationships between agency and supervisor and the subsequent possibilities for greater accountability of the supervision work. Reflecting on our own practice as supervisors both within agencies and external to agencies, this paper invites readers (supervisors and practitioners) to draw on their own supervision experiences. The intention is to critique, challenge, and support critical reflection upon current and potential supervision arrangements for practitioners who participate in supervision that is external to their agencies.

text: Exploring the landscapes of external supervision External supervision offers health and social service practitioners opportunities for exploring their work, professional development, and associated relationships. Within a context outside of the workplace, the supervision relationship allegedly supports practice within the workplace. There is a range of understanding within the sectors about the relationship between supervisor and practitioner. This paper explores the potential of closer relationships between agency and supervisor and the subsequent possibilities for greater accountability of the supervision work. Reflecting on our own practice as supervisors both within agencies and external to agencies, this paper invites readers (supervisors and practitioners) to draw on their own supervision experiences. The intention is to critique, challenge, and support critical reflection upon current and potential supervision arrangements for practitioners who participate in supervision that is external to their agencies.

year: 2010

title: Indigenous human rights and knowledge in archives, museums, and libraries: Some international perspectives with specific reference to New Zealand and Canada

authors: Morse, Bradford W.

subjects: indigenous records

abstract: This article highlights the extent to which international law has changed rapidly in recent years in relation to the rights of Indigenous peoples generally and in particular how this impacts upon the legal status of traditional knowledge and culture. It reviews the recognition of the unique legal status of Māori in Aotearoa and Aboriginal peoples in Canada in relation to self-determination and how their changing place within these nations are affecting the operations of museums, libraries, and archives as case studies, illustrating some of the key legal and practical challenges that now impinge upon the work of archivists and related professionals in many countries.

text: Indigenous human rights and knowledge in archives, museums, and libraries: Some international perspectives with specific reference to New Zealand and Canada This article highlights the extent to which international law has changed rapidly in recent years in relation to the rights of Indigenous peoples generally and in particular how this impacts upon the legal status of traditional knowledge and culture. It reviews the recognition of the unique legal status of Māori in Aotearoa and Aboriginal peoples in Canada in relation to self-determination and how their changing place within these nations are affecting the operations of museums, libraries, and archives as case studies, illustrating some of the key legal and practical challenges that now impinge upon the work of archivists and related professionals in many countries.

year: 2012