Inventories and Norms for Children's Attitudes Toward Physical Activity

Abstract

This paper summarizes the development of an inventory for the assessment of children's attitudes toward physical activity (CATPA), including an overview of its psychometric properties. Through a series of studies, an original and frequently used attitude inventory was restructured, resulting in a revised inventory which is both shorter and psychometrically superior to the original. This instrument, which assesses attitudinal dispositions toward each of seven physical activity subdomains, is shown to possess high internal consistency and strong factor validity. In addition, a new CATPA inventory suitable for grade 3 children is introduced. The two inventories are presented, along with instructions for their administration and scoring. Norms, based on samples of approximately 500 children of each grade and sex, are provided for boys and girls in grades 3, 7, and 11. Throughout the paper consideration is given to research applications, as well as cautions relative to the use and interpretation of the two CATPA inventories.     

Using scenarios to design complex technology-enhanced learning environments

Science Created by You (SCY) learning environments are computer-based environments in which students learn about science topics in the context of addressing a socio-scientific problem. Along their way to a solution for this problem students produce many types of intermediate products or learning objects. SCY learning environments center the entire learning process around creating, sharing, discussing, and re-using these learning objects. This instructional approach requires dedicated instructional designs, which are supplied in the form of what are called pedagogical scenarios. A SCY pedagogical scenario presents the learning process as an organized assembly of elementary learning processes, each associated with a specific learning object and a tool for creating this learning object. Designing a SCY learning environment is basically a two-step procedure: the first step is to select one of the available scenarios, and the second step is to define the domain content. The SCY technical infrastructure then handles the instantiation of the scenario as a SCY computer-based learning environment. In this article we describe the SCY pedagogical design scenarios and report on our experiences in designing four different SCY learning environments.     

Efficiency of neutron tomography in visualizing the internal structure of metal artefacts from Mapungubwe museum collection with the aim of conservation

AimEstimating physical stability as well as revealing signs of fabrication in metal artefacts via two complementary nondestructive methods, neutron- and X-ray tomography were the main goals of this study.AbstractTo aid conservation management of metal artefacts improved knowledge of the internal structure and degree of corrosion therein is highly desired. In this study, neutron- and X-ray tomography were chosen as two complementary noninvasive visualization techniques to study internal structure and corrosion of five representative examples of archaeological metal artefacts from the Mapungubwe museum collection. Tomography was performed at the Neutron Radiography (SANRAD) facility of the South African Nuclear Energy Corporation where thermal neutrons as well as complementary X-rays are conveniently available under one roof. Comparative studies revealed neutron tomography to be generally superior to X-ray tomography due to the enhanced penetration properties of neutrons through the metal objects. In this paper the rich capability of neutron tomography as a nondestructive visualization aid for scientific conservation purposes is introduced and supported by results achieved for the five selected real artefacts.     

Structure vs. content in hierarchical corpora

We propose and describe Parameterized filesystem HITS (PFH), a lightweight rearrangement algorithm that performs a re-ranking of existing content-only search results in tree-like hierarchical corpora, such as a filesystem. PFH does this by combining the content analysis of the results with structural analysis of how they are organized. An α parameter is used to vary the structure-content bias, allowing us to observe changes in performance when we place more emphasis on structure or on content. Using real and simulated data, experiments are provided to show that α = 0.8 (i.e, 20% structure and 80% content) can substantially boost Mean Reciprocal Rank while keeping other IR metrics steady. Such an algorithm may be useful for building retrieval systems over hierarchical content such as Desktop Search, technical documents and books.     

Tutor and teacher timescapes: Lessons from a home-school partnership

A partnership project was developed in which parents volunteered to support teachers in training years 1-3 children in computer skills at a primary school in a small, low socio-economic community. This article identifies the ways teachers and the ‘tutors’ (as the volunteers were called) understood the value of the project. ‘Being a teacher’ and ‘being a volunteer’ were structured by different forms of social engagement, which in turn influenced the ways individuals were able to work with each other in collaborative processes. We argue that the discursive practices encoded in homeschool-community partnership rhetoric represent ruling-class ways of organising and networking that may be incompatible with those of people from low socio-economic backgrounds. When such volunteers work in schools their attendance may be sporadic and short-term whereas teachers would like ‘reliable’ ongoing commitment. This mismatch wrought of teachers’ and volunteers’ differing everyday realities needs to be understood before useful models for partnerships in disadvantaged communities may be realised.     

Learning to succeed in a flat world: information and communication technologies for a new generation of business students

This article investigates the relationship of learning and its infrastructure using Web 2.0 technologies to facilitate the acquisition of skills needed to succeed in a global economy. We explore the learning phenomenon as a way to bring forward a process of continuous improvement supported by social software. We use a commonly accepted definition of learning to evaluate different learning theories, since it seems that the definition of learning itself is not a major source of difference between learning theories. Their differences are over issues of interpretation, not over definition. The theories reviewed are used in the design of a framework to assess the infrastructure against expectations of skill proficiency using Web 2.0 tools, i.e., wikis, blogs, social bookmarking, tagging, etc. which must emerge as a result of registering in an introduction to business information and communication technologies (ICT) course in a Canadian university. In this course, we use Friedman’s (The world is flat: a brief history of the twenty-first century release 3.0, Picador, New York, 2007) thesis that the “world is flat” to discuss issues of globalization and the role of ICT. Students registered in the course are usually familiar with some of the tools we introduce and use in the course. The students are members of Facebook or MySpace, regularly check YouTube, and use Wikipedia in their studies. These tools are the tools to socialize. In our course, we broaden the students’ horizons and explore the potential business benefits of such tools and empower the students to use Web 2.0 technologies within a business context.