The social life of categories : an empirical study of term categorization

Most classification schemes in common use are actually categorization schemes which fall somewhere on a continuum between unstructured, uncontrolled lists of terms and formal classifications. Over time, terms change meaning and acquire new definitions. This paper presents the results of an approach that used the librarianship principle of consensus to form categories of terms and to relate those categories using a domain reference group. Boisot's Social Learning Cycle (SLC) was then used as a model with which to explain category variations. The single study undertaken in this investigation demonstrated the value of the SLC for explaining the variations between reference group members, and showed the potential for explaining category changes over time. This identifies areas in which consensus is breaking down or emerging, allowing for focused maintenance of categorical schemes.

Empirical investigation of multi-tier ensembles for the detection of cardiac autonomic neuropathy using subsets of the Ewing Features

This article is devoted to an empirical investigation of per- formance of several new large multi-tier ensembles for the detection of cardiac autonomic neuropathy (CAN) in diabetes patients using subsets of the Ewing features. We used new data collected by the diabetes screening research initiative (DiScRi) project, which is more than ten times larger than the data set originally used by Ewing in the investigation of CAN. The results show that new multi-tier ensembles achieved better performance compared with the outcomes published in the literature previously. The best accuracy 97.74% of the detection of CAN has been achieved by the novel multi-tier combination of AdaBoost and Bagging, where AdaBoost is used at the top tier and Bagging is used at the middle tier, for the set consisting of the following four Ewing features: the deep breathing heart rate change, the Valsalva manoeuvre heart rate change, the hand grip blood pressure change and the lying to standing blood pressure change.

An empirical case for introductory psychology tutorials in a large-class format

This study examined the effectiveness of an instructional format that Involved conducting introductory psychology tutorials in large conventional lecture theatres with over 100 students per class. We maximised the use of skilled tutors, sharing of student perspectives, and cooperative learning in delivering interactive, active learning activities, Students (N = 284) within each class were randomly assigned to smaller groups that were scaled within the same large class environment. Students reported positive perceptions of their learning experience at an end-of-semester survey. Moreover, they performed significantly better in a major assessment on the tutorial component than a previous cohort taught in conventional small tutorial classes. Our finding indicate that active learning techniques can be implemented just as effectively in a large class tutorial format. These findings have practical implications for designing cost effective yet pedagogically vigorous instructional formats for introductory psychology and other liberal arts courses.

Education and training deficits in industrial clusters : empirical evidence that managers can use to rectify the skills gap in Auckland precinct

Tertiary institutions should seek continuous feedback from industries to keep track of the needs of businesses to provide education and training. In designing programmes and upgrading curricula, there are important factors to bear in mind so that programmes "cater" for all levels of learners. The Auckland City Council financed this study, focussing on Auckland's Rosebank Business Precinct (ARBP). Surrounding communities, particularly Maori, Pacific peoples and recent migrants, experience disparities in employment. The target population were 500+ businesses operating on Rosebank Road. A total of 529 businesses were identified. Interviews with 102 companies with a 36-question questionnaire were conducted. Areas were identified and covered in this paper in the ARBP for developing programmes and curricula for tertiary institutions to provide employable students with the right knowledge, skills and attributes to grow and manage existing ventures. In the analysis we point out what education or training is necessary for ARBP to provide greater efficiencies and improvement in profit levels. Recommendations and conclusions are provided.

The demand for sentence discounts: some empirical evidence

Sentence discounts are now routinely used by Australian courts to encourage guilty pleas. In this article, the authors examine three populations of not on bail defendants who went to trial and were convicted in New South Wales in 2004 for the offences of aggravated robbery, burglary and murder respectively, with the objective of estimating the percentage reduction in sentence quantum that would have induced them to plead guilty. Since conviction (acquittal) probabilities following a trial are likely to be uniformly distributed between 0 and 1, the expected mean probability of conviction (acquittal) for a defendant pleading not guilty was 0.5. The average reductions in the prison sentence corresponding to this probability were: 21%, 23% and 27% respectively. The maximum (minimum) values were: 39% (1.3%), 40% (1.9%) and 39% (1.5%). This range of values reflects the wide dispersion of actual prison sentences handed down by the courts. The distribution of actual sentence discounts offered by the judges in exchange for a guilty plea is not available, consequently the authors cannot comment on why these defendants chose a trial.

An empirical study of the world price of sustainability

The core goal of this study is to empirically investigate whether there is a “world price” of corporate sustainability. This is assessed in the context of standard asset pricing models—in particular, by asking whether a risk premium attaches to a sustainability factor after controlling for the Fama–French factors. Both time-series and cross-sectional tests are formulated and applied. The results show that (1) global Fama–French factors have strong power to explain global equity returns and (2) sustainability investments have no significant impact on global equity returns. The absence of a significant relationship between sustainability and returns implies that large institutional investors are free to implement sustainability mandates without fear of breaching their fiduciary duties from realising negative returns due to incorporating a sustainability investment process.

Performance evaluation of e-government services using balance scorecard : an empirical study in Jordan

Purpose - the purpose of this paper is to emphasise on a balance between quantitative and qualitative measures, and examine the use of Balanced Scorecard to evaluate and estimate the performance of information and communication technologies (ICT) in delivering valuable e-government services through the internet. Design/methodology/approach - This study tests the hypotheses of e-government effectiveness using Balanced Scorecard technique by incorporating qualitative measures within a quantitative research methodology with data collected by means of a survey questionnaire. The survey sample of 383 stakeholders includes common customers, employees of e-government, and employees from the IT sector. The survey data were analysed to test the hypothesis in measuring e-government effectiveness from Balanced Scorecard's four dimensions: customer perspective, financial perspective, internal business process perspective, and innovation and learning perspective. Findings - The results show that the Balanced Scorecard factors fit very well with monitoring and measuring the performance of e-government in Jordan, and also in evaluating their success in IT project investments. Originality/value - This study attempts to address this gap in the literature and would benefit future studies in applying Balanced Scorecard for performance evaluation of various IT projects that are gaining huge investments from governments and organisations .