SCLOPE: an algorithm for clustering data streams of categorical attributes

Clustering is a difficult problem especially when we consider the task in the context of a data stream of categorical attributes. In this paper, we propose SCLOPE, a novel algorithm based on CLOPErsquos intuitive observation about cluster histograms. Unlike CLOPE however, our algo- rithm is very fast and operates within the constraints of a data stream environment. In particular, we designed SCLOPE according to the recent CluStream framework. Our evaluation of SCLOPE shows very promising results. It consistently outperforms CLOPE in speed and scalability tests on our data sets while maintaining high cluster purity; it also supports cluster analysis that other algorithms in its class do not.

ó-SCLOPE : clustering categorical streams using attribute selection

Clustering is a difficult problem especially when we consider the task in the context of a data stream of categorical attributes. In this paper, we propose σ-SCLOPE, a novel algorithm based on SCLOPE’s intuitive observation about cluster histograms. Unlike SCLOPE however, our algorithm consumes less memory per window and has a better clustering runtime for the same data stream in a given window. This positions σ-SCLOPE as a more attractive option over SCLOPE if a minor lost of clustering accuracy is insignificant in the application.

Competency and capability: imperative for nurse practitioner education

Objective:
The objective of this study was to conduct research to inform the development of standards for nurse practitioner education in Australia and New Zealand and to contribute to the international debate on nurse practitioner practice.
Setting:
The research was conducted in all states of Australia where the nurse practitioner is authorised and in New Zealand.
Subjects:
The research was informed by multiple data sources including nurse practitioner program curricula documents from all relevant universities in Australia and New Zealand, interviews with academic convenors of these programs and interviews with nurse practitioners.
Primary argument:
Findings from this research include support for master's level of education as preparation for the nurse practitioner. These programs need to have a strong clinical learning component and in-depth education for the sciences of specialty practice. Additionally an important aspect of education for the nurse practitioner is the centrality of student directed and flexible learning models. This approach is well supported by the literature on capability.
Conclusions:
There is agreement in the literature about the lack of consistent standards in nurse practitioner practice, education and nomenclature. The findings from this research contribute to the international debate in this area and bring research informed standards to nurse practitioner education in Australia and New Zealand.

The moral imperative of designating patient safety and quality care as a national nursing research priority

Since the early 1990s, research studies conducted respectively in the USA, UK and Australia have found that between 4 and 16.6 per cent of patients suffer from some kind of harm (including permanent disability and death) as a result of human errors and adverse events while in hospital. It has been further estimated that approximately 50 per cent of these human errors/adverse events resulting in harm could have been prevented. In response to the significant financial, social, and political implications of these figures, a range of processes have been put in place in an attempt to improve patient safety and quality care in Australia. Nonetheless, it is evident that more can be done to improve the status quo. One process that warrants consideration is that of peak health professional groups and organisations providing active leadership in the promotion of patient safety, such as by making a visible and recognisable commitment to patient safety as a strategic research priority area. In this paper it is contended that, given the moral importance of patient safety and quality care in nursing and related health care domains, the inseparable link between nursing practice and patient safety, and the central role that research has to play in driving safety improvements in these domains, it is morally imperative that the nursing profession gives sustained and focussed public attention to patient safety and quality care as a national research priority.

The scholarship of teaching in Australian higher education : a national imperative

The notion of ‘the scholarship of teaching’ has enjoyed a growing level of attention over the past decade and a half. This keynote will examine the congruence between the scholarship of teaching, and national and institutional values and priorities in relation to teaching in higher education. The presentation will conclude by offering some principles for guiding the development of an individual scholarship of teaching.

Understanding anxiety and depression : a dimensional and categorical approach

Three studies were conducted to understand the strong relationship between anxiety and depression. Common indicators of each disorder including critical attitudes towards self and others, negative childhood experiences, low social support and use of emotion as a coping strategy were found. Another important finding is that unremitted anxiety leads to depression in approximately 50% of cases. Implications of these findings for intervention and treatment were presented.

The profit imperative

This wide-ranging work convincingly argues that a minority can only radically transform a pattern of production and consumption through the commercial sphere of a liberal democracy. In constructing the argument, creative use is made of important works in ontology, social philosophy, political philosophy, sociology, micro-economics and ethics.

The right to an impartial hearing trumps the social imperative of bringing accused to trial even 'down under'

Accused persons who are subjected to a saturation level of negative media coverage may be denied an impartial hearing, which is perhaps the most important aspect of the right to a fair hearing. Despite this, the courts have generally held that the social imperative of prosecuting accused trumps the interests of the accused. The justification for an impartial hearing stems from the repugnance of convicting the innocent. Viewed dispassionately, this imperative is not absolute, given that every legal system condones procedures which result in the conviction of some innocent people. While the importance of guarding against wrongful convictions has been overstated, the imperative to bring to trial all accused has been even more exaggerated. The legal system has displayed a capacity to deal with cases where the guilty walk free. The institutional integrity of the criminal justice system would be significantly compromised by convictions that are tarnished by pre-judgment. Confidence in the criminal justice system is more important than individual criminal accountability. The inability to receive an impartial hearing should result in a permanent stay. The only exception is where the alleged crime has the capacity to cause widespread fear or social unrest. This only applies in relation to serious acts of terrorism. This article focuses on recent legal fair trial developments in Australia, however, the analysis, reasoning and conclusion applies in relation to all jurisdictions where juries determine guilt and innocence.