Adaptive progressive download based on the MPEG-4 file format

In this paper we describe how progressive download and adaptive streaming can be combined into a simple and efficient streaming framework. Based on the MPEG-4 file format (MP4) we use HTTP for transport and argue that these two components are sufficient for specifying an open streaming architecture. The client selects appropriate chunks from the MP4 file to be transferred based on (1) the header information (i.e. the “moov” box) in the first part of the file and (2) his observation of network throughput. The framework is completely client driven which allows for better server scalability and reduces signalling overhead. We discuss architecture and implementation issues such as complexity, interoperability and scalability and compare to 3GPP PSS Rel-6 adaptive streaming when appropriate. Measurements from a simple MP4/HTTP streaming client are presented showing that appropriate chunks are selected such that increased reliability is achieved.     

Equitable representation of deaf people in mainstream academia: Why not?

Approximately 5% of people in most countries have deafness or significant hearing loss. This significant minority is underrepresented in mainstream universities across the world. Background information about deafness, relevant technology and its drawbacks, and the use of interpreters are discussed. The barriers to equitable representation of qualified Deaf academics in university settings are reviewed. The experiences of three Deaf academics who teach in mainstream universities are discussed, and suggestions for resolution are offered. Examples are cited for teaching, research and service, the threefold duties of the successful academic. Continuing access difficulties mean that only a few deaf graduates now consider doctoral study; cost and the perception of cost, as well as negative attitudes and lack of knowledge may mean that the few successful graduates have difficulties gaining employment; successful tenure and promotion prospects may also be hindered for the same reasons. We also provide recommendations how barriers for successful Deaf academics can be removed or mitigated.     

A human resources model supporting academic excellence

Tertiary Education and Management - In this paper, I shall put forward a model which highlights key issues to be taken into account in an attempt to improve academic excellence by the means of...     

Early numeracy in low‐performing young children

The aim of this study was to explore the early numeracy of low‐performing young children. The mean age of the children was six years and four months. The 511 participants belonged to three groups: multi‐language children, children with special educational needs and children with average performance. The results showed that there were significant group differences in early numeracy: the children in the reference group had better relational and counting skills than those with a multi‐language background and those with special educational needs. Some differences were found in counting skills between the children with multi‐language background and those with special educational needs. Finally, (special) educational support for low‐performing children is discussed.     

Making inquiry-based science learning visible: the influence of CVS and cognitive skills on content knowledge learning in guided inquiry

ABSTRACT

Many science curricula and standards emphasise that students should learn both scientific knowledge and the skills associated with the construction of this knowledge. One way to achieve this goal is to use inquiry-learning activities that embed the use of science process skills. We investigated the influence of scientific reasoning skills (i.e. conceptual and procedural knowledge of the control-of-variables strategy) on students’ conceptual learning gains in physics during an inquiry-learning activity. Eighth graders (n?=?189) answered research questions about variables that influence the force of electromagnets and the brightness of light bulbs by designing, running, and interpreting experiments. We measured knowledge of electricity and electromagnets, scientific reasoning skills, and cognitive skills (analogical reasoning and reading ability). Using structural equation modelling we found no direct effects of cognitive skills on students’ content knowledge learning gains; however, there were direct effects of scientific reasoning skills on content knowledge learning gains. Our results show that cognitive skills are not sufficient; students require specific scientific reasoning skills to learn science content from inquiry activities. Furthermore, our findings illustrate that what students learn during guided inquiry activities becomes visible when we examine both the skills used during inquiry learning and the process of knowledge construction. The implications of these findings for science teaching and research are discussed.     

The development of children at familial risk for dyslexia: Birth to early school age

Children at risk for familial dyslexia (n = 107) and their controls (n = 93) have been followed from birth to school entry in the Jyvaskyla Longitudinal study of Dyslexia (JLD) on developmental factors linked to reading and dyslexia. At the point of school entry, the majority of the at-risk children displayed decoding ability that fell at least 1 SD below the mean of the control group. Measures of speech processing were the earliest indices to show both group differences in infancy and also significant predictive associations with reading acquisition. A number of measures of language, including phonological and morphological skill collected repeatedly from age three, revealed group differences and predictive correlations. Both the group differences and the predictive associations to later language and reading ability strengthened as a function of increasing age. The predictions, however, tend to be stronger and the spectrum of significant correlations wider in the at-risk group. These results are crucial to early identification and intervention of dyslexia in at-risk children.     

Adolescents’ Social Networks: Exploring Different Patterns of Socio-Digital Participation

The purpose of the study was to assess adolescents’ participation in various socio-digital activities by using a self-report questionnaire, a social networking questionnaire, and interviews. The participants (n?=?253) were grade 6–9 students from a multicultural lower-secondary school in Finland. Three profiles of socio-digital participation were identified: friendship oriented basic participators (n?=?161), gaming-oriented participators (n?=?61), and creative participators (n?=?31) intensively engaged in diverse socio-digital practices. The analyses revealed systematic differences in social networking relations as a function of adolescents’ social-digital participation profile and gender. The reciprocal values in hanging out, liking, and media multiplexity were highest for creative participators, whereas gaming-oriented participators were less socially active than their peers. The socio-digital expertise of creative participators was socially recognized by a larger group of peers than that of the other groups. The study produces methodological tools suitable for collecting systematic longitudinal data of socio-digital practices of larger groups of adolescents in future.     

Searching for pedagogical adaptations by exploring teacher’s tacit knowledge and interactional co-regulation in the education of pupils with autism

The purpose of this article is to introduce a research design, which aims to find useful pedagogical adaptations for teaching pupils with autism. Autism is a behavioural syndrome characterised by disabilities and dysfunctions in interaction and communication, which is why it is interesting to explore educational processes particularly from an interactional perspective in a class with pupils with autism. The main focus is in exploring teacher’s tacit knowledge and interactional co-regulation between the teacher and the pupils. This study is a part of a larger Finnish project, which involves the education of pupils with autism in the primary school system. In the study described, six video recordings (each about 30?min) were taken under analysis due to the uniqueness in the research context of special education: the videos are rare in that they involve only the teacher and her six pupils with autism; no helpers are present in the classroom. This study explored the phenomenon ethnomethodologically. This study indicated that it is possible to apply a general theory of interaction when exploring people with autism, although the main diagnostic criteria of autism are disabilities in social interaction and communication. It was possible to extract episodes from the behaviour of the teacher that showed her tacit knowledge becoming concrete. These results could be taken into consideration when planning and carrying out teaching in different contexts and in teacher education, too.