A review of some models for the analysis of contingency tables : a thesis presented in partial fulfilment of the requirements for the degree of Master of Arts in Statistics at Massey University

Some models proposed for the analysis of contingency tables are reviewed and illustrated with examples. These include standard loglinear models; models which are suitable for ordinal categorical variables such as ordinal loglinear, log­ multiplicative and logit models, and models based on an underlying distribution for the response; and models for incomplete and square tables. Estimation methods and inference are also discussed

A Pedagogy for Original Synners

Part of the Volume on Digital Young, Innovation, and the UnexpectedThis essay begins by speculating about the learning environment of the class of 2020. It takes place entirely in a virtual world, populated by simulated avatars, managed through the pedagogy of gaming. Based on this projected version of a future-now-in-formation, the authors consider the implications of the current paradigm shift that is happening at the edges of institutions of higher education. From the development of programs in multimedia literacy to the focus on the creation of hybrid learning spaces (that combine the use of virtual worlds, social networking applications, and classroom activities), the scene of learning as well as the subjects of education are changing. The figure of the Original Synner is a projection of the student-of-the-future whose foundational literacy is grounded in their ability to synthesize information from multiple information streams

Allatostatin-A neurons inhibit feeding behavior in adult Drosophila

How the brain translates changes in internal metabolic state or perceived food quality into alterations in feeding behavior remains poorly understood. Studies in Drosophila larvae have yielded information about neuropeptides and circuits that promote feeding, but a peptidergic neuron subset whose activation inhibits feeding in adult flies, without promoting metabolic changes that mimic the state of satiety, has not been identified. Using genetically based manipulations of neuronal activity, we show that activation of neurons (or neuroendocrine cells) expressing the neuropeptide allatostatin A (AstA) inhibits or limits several starvation-induced changes in feeding behavior in adult Drosophila, including increased food intake and enhanced behavioral responsiveness to sugar. Importantly, these effects on feeding behavior are observed in the absence of any measurable effects on metabolism or energy reserves, suggesting that AstA neuron activation is likely a consequence, not a cause, of metabolic changes that induce the state of satiety. These data suggest that activation of AstA-expressing neurons promotes food aversion and/or exerts an inhibitory influence on the motivation to feed and implicate these neurons and their associated circuitry in the mechanisms that translate the state of satiety into alterations in feeding behavior

The "trilobite” trackways in the Table Mountain Group (Ordovician) of South Africa

A terminology for arthropod trackways is defined and the nomenclature of trace fossils is discussed briefly. Most of the trackways from the reddish sandstone Graafwater Formation are assigned to the ichnospecies Petalichnus capensis sp. nov. which includes bilaterally symmetrical walking Irails consisting of a repetition of 9-12 pairs of unifid tracks sometimes accompanied by a median drag line. These trackways are associated with hemispherical burrows Metaichna rustica gen. et sp. nov. The same animals possibly made both the trackways and the burrows, but whether or not they were trilobites is not clear.Council for Scientific and Industrial Researc

Structural Racism and Youth Development

Youth of color have experienced poor outcomes relative to their white counterparts historically, and these disparities persist today. Researchers have offered a number of explanations for these disparities, some of the more popular of which have focused on individual deficiencies. If one elucidates the underlying theories of change of dominant practices and public policies in the youth field, it appears that, despite variation in approach and emphasis, they too have focused on individual behavior. While behavior is clearly an important contributor to the outcomes that individuals experience, it is not the sole determinant. Rather, we contend that there are larger, structural factors that contribute to the racial disparities between youth of color and their white counterparts that deserve systematic and sustained attention

Residential child care qualifications audit 2007

In recent years there has been a drive to develop a fully qualified residential child care sector in Scotland. In 2003 the Scottish Social Services Council (SSSC) announced the baseline qualifications for residential child care staff and set down a target for attaining it. This qualifications framework was subsequently reviewed and expanded in 2004. The Scottish Institute for Residential Child Care (SIRCC), commissioned by the Scottish Executive, has previously undertaken two inquiries into the qualification levels of the residential child care workforce in Scotland. The first Qualifications Audit (Frondigoun, Maclean, Hosie & Kendrick, 2002) was undertaken before the SSSC’s initial qualification framework was known and the second (Hunter, Hosie, Davidson & Kendrick, 2004) was based on it. The previous qualifications audit (Hunter et al., 2004) reported that 18% of residential child care staff were fully qualified in accordance with the SSSC’s qualification criteria (SSSC, 2004). The report forecast that the number of fully qualified staff would rise to 29.1% if all qualifications being undertaken were achieved. The purpose of this current audit is to determine whether levels of qualified staff have risen and to identify qualification trends throughout the residential child care sector in Scotland

Obligations of trust for privacy and confidentiality in distributed transactions

Purpose – This paper aims to describe a bilateral symmetric approach to authorization, privacy protection and obligation enforcement in distributed transactions. The authors introduce the concept of the obligation of trust (OoT) protocol as a privacy assurance and authorization mechanism that is built upon the XACML standard. The OoT allows two communicating parties to dynamically exchange their privacy and authorization requirements and capabilities, which the authors term a notification of obligation (NoB), as well as their commitments to fulfilling each other's requirements, which the authors term signed acceptance of obligations (SAO). The authors seek to describe some applicability of these concepts and to show how they can be integrated into distributed authorization systems for stricter privacy and confidentiality control. Design/methodology/approach – Existing access control and privacy protection systems are typically unilateral and provider-centric, in that the enterprise service provider assigns the access rights, makes the access control decisions, and determines the privacy policy. There is no negotiation between the client and the service provider about which access control or privacy policy to use. The authors adopt a symmetric, more user-centric approach to privacy protection and authorization, which treats the client and service provider as peers, in which both can stipulate their requirements and capabilities, and hence negotiate terms which are equally acceptable to both parties. Findings – The authors demonstrate how the obligation of trust protocol can be used in a number of different scenarios to improve upon the mechanisms that are currently available today. Practical implications – This approach will serve to increase trust in distributed transactions since each communicating party receives a difficult to repudiate digitally signed acceptance of obligations, in a standard language (XACML), which can be automatically enforced by their respective computing machinery. Originality/value – The paper adds to current research in trust negotiation, privacy protection and authorization by combining all three together into one set of standardized protocols. Furthermore, by providing hard to repudiate signed acceptance of obligations messages, this strengthens the legal case of the injured party should a dispute arise

Supporting the development of executive functioning skills in sixth grade students

This integrative master\u27s project explores how teachers can support the development of executive functioning skills in sixth grade students at the particular school where the author is a learning specialist (though many of the findings and recommendations can be generalized to other settings)