Sharing good teaching practice: Practical strategies to integrate ICT into the classroom

Situated in regional areas of Victoria, a group of 16 primary and secondary teachers participated in an intensive program of professional development designed to assist them in embedding lCT into their classroom practice. Most teachers made significant changes to their teaching practice becoming risk-takers and problem solvers.This paper reports on the strategic innovations introduced by the teachers including training, preparation, curriculum planning, software evaluation and selection, classroom management strategies, cooperative learning strategies and embedded assessment tasks. The paper will explore the ways these innovations responded to a variety of constraints including limited resources, time and support.

Sharing and speaking about African music : professional development with Swaziland primary school teachers

The teaching and learning of Indigenous African music is characterised as a holistic integrated experience where music, dance and theatre are inseparable, seen as an integral part of culture. The transmission of this experience is absorbed through participation in cultural activities from childhood in the community. In African societies, both traditional and contemporary, musical arts education and the understanding of culture are fundamental to life, community and society. It is through musical arts, that Africans embrace spiritual, emotional, material and intellectual aspects and knowledge of both the individual and the community. This paper reports on an in-service program (August 2006) offered at the Centre for Indigenous African Instrumental Music and Dance Practices (CIIMDA), Pretoria, South Africa. For the purpose of this paper, the one week professional development course undertaken by generalist primary school teachers from Swaziland is highlighted and proves worthy for these teachers to implement what they learnt in the classroom. As a position paper, I contend that the understanding and participation in indigenous cultural musical arts practices, enlightens learners about their cultural heritage and further enriches their understanding of African music and dance that can be adopted, adapted and applied to primary schools in Swaziland. This paper summaries some key findings of interview data from ten participants in relation to the intensive program. By offering such in-service professional development programs, teachers are able to reach their wider communities where they will continue to share and speak about African music, dance and culture.

Information sharing between heterogeneous uncertain reasoning models in a multi-agent environment : a case study

The issue of information sharing and exchanging is one of the most important issues in the areas of artificial intelligence and knowledge-based systems (KBSs), or even in the broader areas of computer and information technology. This paper deals with a special case of this issue by carrying out a case study of information sharing between two well-known heterogeneous uncertain reasoning models: the certainty factor model and the subjective Bayesian method. More precisely, this paper discovers a family of exactly isomorphic transformations between these two uncertain reasoning models. More interestingly, among isomorphic transformation functions in this family, different ones can handle different degrees to which a domain expert is positive or negative when performing such a transformation task. The direct motivation of the investigation lies in a realistic consideration. In the past, expert systems exploited mainly these two models to deal with uncertainties. In other words, a lot of stand-alone expert systems which use the two uncertain reasoning models are available. If there is a reasonable transformation mechanism between these two uncertain reasoning models, we can use the Internet to couple these pre-existing expert systems together so that the integrated systems are able to exchange and share useful information with each other, thereby improving their performance through cooperation. Also, the issue of transformation between heterogeneous uncertain reasoning models is significant in the research area of multi-agent systems because different agents in a multi-agent system could employ different expert systems with heterogeneous uncertain reasonings for their action selections and the information sharing and exchanging is unavoidable between different agents. In addition, we make clear the relationship between the certainty factor model and probability theory.

A logical framework for knowledge sharing in multi-agent systems

The issue of knowledge sharing has been an important topic in multi-agent research. Knowledge sharing leads to that agents analyze, judge and synthesize the told information so as to make agents’ own knowledge. To match these applications, this paper builds a logical framework for knowledge sharing among agents. We develop a multimodal logic for reasoning about both agents’ knowledge and told information. For formalizing the relationship between knowledge and told information, we present a framework of semantics, with respect to which a sound and complete proof theory is given.

Government revenue, private welfare, and tax reform in a small open economy

This paper examines the welfare and revenue effects of consumption and income taxes in a general equilibrium model with variable supply of labour and public goods. We derive the optimal consumption and income tax rates for such an economy. It is established that it is better to lower the income tax rate and increase the rate of consumption tax when this economy is in a downturn.

Socio-technical factors influencing channel use for knowledge-sharing in regional SME networks

The economic sustainability of regional areas is dependent on cross-industry innovation and knowledge-sharing among Small and Medium Enterprises (SMEs). The web-based initiatives deployed in regions worldwide to facilitate SME knowledge-sharing have typically been unsuccessful. This paper argues that the main reason for these failures is the lack of understanding of the socio-technical factors which influence the use of web-based channels (websites, online forums and expertise databases) as well as the more conventional channels (face-to-face and e-mail). This paper reports the findings of interpretive case studies of two regional SME business networks. It evaluates the major channels on six socio-technical criteria: link strength; trustworthiness; tacitness; usability; durability and currency. None of the channels were strong against all socio-technical factors. This highlights the importance of achieving an appropriate mix of channels to facilitate SME knowledge-sharing.

Factors influencing Australian SMEs knowledge sharing online

The Web offers a powerful tool for knowledge-sharing among small and medium sized enterprises (SMEs). Such online initiatives have, however, frequently been unsuccessful. This paper examines factors motivating SMEs to share knowledge online. It reports data from a telephone survey of 192 SME members of two successful regional business networks comprising members from diverse industries. Although the majority of SMEs actively used the Web in their daily business operations and most were willing to share knowledge face-to-face, this did not translate into willingness to share online. The most significant factors affecting the willingness to share knowledge online were the how many of networks SMEs were involved in, the number of years an SME had been in business, the geographical scope of their operations, and intensity of their use of the web. These findings challenge the commonly-held view that SMEs will automatically share online if the infrastructure is provided.

Song sharing and repertoire size in the sedge warbler, Acrocephalus schoenobaenus: changes within and between years

The complex song of the male sedge warbler functions mainly in sexual attraction and the evolution of repertoire size is driven primarily by female choice. As male song ceases upon pairing, male–male singing interactions are relatively brief and have not been studied to our knowledge. This study shows that young males in their first breeding season shared significantly more syllables with their nearest neighbour than with their fathers or more distant males. Moreover, daily recordings revealed that rapid learning and modification of syllable repertoires occurred, resulting in a progressive increase in sharing within just a few days. This does not lead to a gradual increase in repertoire size as some syllables are dropped and new ones are acquired. This turnover process allows males to share syllables with their neighbours, whilst repertoire size, known to be important in female choice, remains relatively constant in any one year. Individual males were followed for several years and also showed considerable syllable turnover between years. However, in this case, repertoire size was found to increase between years, the largest increase occurring between the first and second years. We obtained a significant positive correlation between repertoire size and age, suggesting that females choosing males with larger repertoires may gain indirect (genetic) benefits for their offspring, such as good genes for viability. Whilst these results reveal a more flexible picture of repertoire turnover than previously suspected, the relative stability of repertoire size within a season and the increase with age suggests that repertoire size remains a likely target for sexual selection by female choice.

Government revenue and government expenditure nexus : evidence from developing countries

The relationship between government revenue and government expenditure has attracted a lot of interest given its policy relevance, particularly with respect to budget deficits. The goal of this paper is to investigate evidence for causality between government revenue and government expenditure within a multivariate framework by modelling them together with gross domestic product for 12 developing countries. Our application of the Toda and Yamamoto (1995) test for Granger causality reveals support for the tax-and-spend hypothesis for Mauritius, El Salvador, Haiti, Chile and Venezuela. For Haiti, there is evidence for the spend-and-tax hypothesis, while for Peru, South Africa, Guatemala, Uruguay and Ecuador there is evidence of neutrality.