title: Approximative filtering of XML documents in a publish/subscribe system

authors: Hinze, Annika

subjects: computer science

abstract: Publish/subscribe systems filter published documents and inform their subscribers about documents matching their interests. Recent systems have focussed on documents or messages sent in XML format. Subscribers have to be familiar with the underlying XML format to create meaningful subscriptions. A service might support several providers with slightly differing formats, e.g., several publishers of books. This makes the definition of a successful subscription almost impossible. This paper proposes the use of an approximative language for subscriptions. We introduce the design of our ApproXFilter algorithm for approximative filtering in a publish/subscribe system. We present the results of our performance analysis of a prototypical implementation.

text: Approximative filtering of XML documents in a publish/subscribe system Publish/subscribe systems filter published documents and inform their subscribers about documents matching their interests. Recent systems have focussed on documents or messages sent in XML format. Subscribers have to be familiar with the underlying XML format to create meaningful subscriptions. A service might support several providers with slightly differing formats, e.g., several publishers of books. This makes the definition of a successful subscription almost impossible. This paper proposes the use of an approximative language for subscriptions. We introduce the design of our ApproXFilter algorithm for approximative filtering in a publish/subscribe system. We present the results of our performance analysis of a prototypical implementation.

year: 2006-01-16

title: A strategy for the correction of effects of jitter in AMCW lidar images

authors: Streeter, Lee

subjects: Science & Technology

abstract: Full-field range imaging cameras, which are an example of amplitude modulated continuous wave (AMCW) lidar, are subject to multiple error sources. In this paper we consider the possibility that a global jitter and/or drift occurs between the modulation signals to the active illumination source and the camera sensor. A model for jitter is presented and is used to characterise the jitter in a real camera system. Correction of the effects of jitter in real acquired range images is demonstrated by a reduction of the standard deviation of random noise by up to a factor of five, with the best reductions occurring in pixels that receive a strong signal.

text: A strategy for the correction of effects of jitter in AMCW lidar images Full-field range imaging cameras, which are an example of amplitude modulated continuous wave (AMCW) lidar, are subject to multiple error sources. In this paper we consider the possibility that a global jitter and/or drift occurs between the modulation signals to the active illumination source and the camera sensor. A model for jitter is presented and is used to characterise the jitter in a real camera system. Correction of the effects of jitter in real acquired range images is demonstrated by a reduction of the standard deviation of random noise by up to a factor of five, with the best reductions occurring in pixels that receive a strong signal.

year: 2013

title: The importance of Māori identity for athletes and sportspeople within sporting contexts

authors: Westrupp, Maia Takamoana

subjects: Māori

abstract: Identity is an important concept within psychology given its influence upon how we perceive ourselves, who we are as people, and how it can impact behaviour. For Māori, colonisation has had a detrimental impact on the maintenance and flourishing of a strong cultural identity. Sport is an area where Māori have not only contributed successfully nationally and internationally alongside Pakeha, but have been able to either affirm or rebuild their sense of cultural identity and connectedness. The purpose of this thesis is to examine the importance of Māori identity for athletes and sports people within a sporting context. This research project encompassed a qualitative approach, drawing upon a kaupapa Māori research paradigm. Semi-structured interviews were employed to ascertain in depth knowledge of participant’s experiences. A total of six participants took part in this study, all of whom were made up of athletes, coaches, and sports psychologists. When interpreting participants understanding of Māori identity within a sporting context, participants indicated a desire to configure their Māori identity based on Māori cultural concepts such as whakapapa, manaakitanga, and pēpeha. The key findings also identified a link between Māori identity and sport as participants illustrated how important Māori identity was within their sports team and organisation. Participants also indicated an unconscious link to enhanced sporting behaviours given the essence of Māori identity and the significance it places on serving the collective. Ultimately, for Māori athletes and sports people, the sporting realm offers an opportunity to engage and reaffirm Māori identity. Additionally, the value sporting teams and organisations place on Māori identity, can lead to flourishing in sport given the behaviours that may transpire by connecting the individual beyond purely, the physical domain.

text: The importance of Māori identity for athletes and sportspeople within sporting contexts Identity is an important concept within psychology given its influence upon how we perceive ourselves, who we are as people, and how it can impact behaviour. For Māori, colonisation has had a detrimental impact on the maintenance and flourishing of a strong cultural identity. Sport is an area where Māori have not only contributed successfully nationally and internationally alongside Pakeha, but have been able to either affirm or rebuild their sense of cultural identity and connectedness. The purpose of this thesis is to examine the importance of Māori identity for athletes and sports people within a sporting context. This research project encompassed a qualitative approach, drawing upon a kaupapa Māori research paradigm. Semi-structured interviews were employed to ascertain in depth knowledge of participant’s experiences. A total of six participants took part in this study, all of whom were made up of athletes, coaches, and sports psychologists. When interpreting participants understanding of Māori identity within a sporting context, participants indicated a desire to configure their Māori identity based on Māori cultural concepts such as whakapapa, manaakitanga, and pēpeha. The key findings also identified a link between Māori identity and sport as participants illustrated how important Māori identity was within their sports team and organisation. Participants also indicated an unconscious link to enhanced sporting behaviours given the essence of Māori identity and the significance it places on serving the collective. Ultimately, for Māori athletes and sports people, the sporting realm offers an opportunity to engage and reaffirm Māori identity. Additionally, the value sporting teams and organisations place on Māori identity, can lead to flourishing in sport given the behaviours that may transpire by connecting the individual beyond purely, the physical domain.

year: 2022