The Use of Computers in the Education of Open University Students with Disabilities

Abstract

In 1988 the Open University is implementing a major new policy on the use of computers in its courses; students taking certain courses will be obliged to have access to a microcomputer. This new policy has many far‐reaching consequences, not least for students who are disabled. In the past most computing in Open University courses has been done by students using terminals in local study centres, linked to the University's mainframe computers. Also, a number of students who are disabled have used computers in their studies, principally for word‐processing written work. By interviewing disabled students who have taken such courses, and surveying other disabled students, it has been possible to anticipate to some extent the likely impact of the home‐computing (HC) policy. Results suggest that for many disabled‐ students the HC policy represents an improvement in their opportunities; now they will be able to study courses involving computers entirely at home. However, a number of problems have also been identified. Hopefully, as many of these have been recognised at an early stage, it will be possible to address them before they affect students directly.     

The life and work of Niels Bohr — A brief sketch

The life and work of Niels Bohr are briefly reviewed covering: his family life, background, and education; the importance of his stay in England after PhD, and the crucial contact with Rutherford; the period of the Old Quantum Theory initiated by his work on atomic structure; and his role as mentor to the next generation of physicists through his Institute in Copenhagen. The contacts with Einstein, their debates on quantum mechanics, their deep mutual respect, and their personalities, are described.     

Fascinating organic molecules from nature

Among the traditional five sensory perceptions, colour and smell often go hand in hand, along with taste. Among the objects used for worshipping God, for instance, flowers and incenses occupy prime places. The subject matter of this article is the chemistry of musk and related perfumes derived from natural sources.     

Lipophorin receptor: The insect lipoprotein receptor

The low-density lipoprotein receptor (LDLR), one of the best characterized cell-surface receptors, mediates cholesterol homeostasis and other functions in mammals. The members of the LDLR superfamily are structurally related and characterized by distinct functional domains. Insect lipoprotein receptor is called lipophorin receptor (LpR) and belongs to the LDLR superfamily. Here, we review the structural and functional aspects of lipophorin receptors.     

The sacred lotus

The lotus is very much a part of Indian cultural traditions. Its importance has long been recognized and it has been grown for use as food, medicine and also for cultural and religious activities. Significantly, the longevity of the lotus seed is phenomenal, with viable seeds dated as being 1300 years old. Seed germination of the lotus is very rare in Nature; however, farmers’ knowledge and experience may show how lotus seeds can be germinated.     

Correlation between variables subject to an order restriction,with application to scientometric indices

Variables subject to an order restriction, for instance Y ≤ X, have a bivariate distribution over a non-rectangular joint domain that entails a non-null and potentially large structural relation even if the variables show no association (in the sense that particular ranges of values of X do not co-occur with particular ranges of values of Y). Order restrictions affect a number of scientometric indices (including the h index and its variants) that are routinely subjected to correlational analyses to assess whether they provide redundant information, but these correlations are contaminated by the structural relation. This paper proposes an alternative definition of association between variables subject to an order restriction that eliminates their structural relation and reverts to the conventional definition when applied to variables that are not subject to order restrictions. This alternative definition is illustrated in a number of theoretical cases and it is also applied to empirical data involving scientometric indices subject to an order restriction. A test statistic is also derived which allows testing for the significance of an association between variables subject to an order restriction.     

The Reading Habits of Superior College Students

A structured team approach in learning introductory COBOL programming was empirically assessed with a sample of 215 undergraduate business administration majors. For each assigned program, students in the experimental group read and critiqued team members’ program listings. COBOL proficiency was measured by a final examination testing knowledge of language rules, ability to read a program, and the ability to write a program. Analysis of multiple covariance was used to statistically adjust test scores for age and conditional reasoning scores. For the program writing variable, a significant difference favoring the experimental group was found. The language rules variable showed no significant difference, while the reading variable did not satisfy the required assumptions of the proposed statistical model. However, the experimental group showed higher mean scores for both of these variables. The findings provide empirical support for incorporating team activities into the programming learning process to more effectively develop student proficiency in writing COBOL programs.     

A Study of Sensori-Motor and Conceptual Thinking in Children between the Ages of Nine and Eighteen

In this research, the author addresses whether the application of unidimensional item response models provides valid interpretation of test results when administering items sensitive to multiple latent dimensions. Overall, the present study found that unidimensional models are quite robust to the violation of the unidimensionality assumption due to secondary dimensions from sensitive items. When secondary dimensions are highly correlated with main construct, unidimensional models generally fit and the accuracy of ability estimation is comparable to that of strictly unidimensional tests. In addition, longer tests are more robust to the violation of the essential unidimensionality assumption than shorter ones. The author also shows that unidimensional item response theory models estimate item difficulty parameter better than item discrimination parameter in tests with secondary dimensions.     

Relationship between Cognitive Style and Teachers’ Perceptions of Young Children’s Academic Competence

The study investigated the significance of matching cognitive style of first- and third-grade students to their teachers. The Articulation of the Body-Concept Scale was administered as a measure of cognitive style to 20 first- and 20 third-grade female teachers and a sample (480) of six boys and six girls for each teacher. Teachers ranked their students according to their judgment of the students’ academic competence. Discrepancy scores were obtained based on the degree to which teachers differed in ranking their students in comparison to rankings on the Comprehensive Tests of Basic Skills. A repeated measures analysis of variance indicated statistically significant main effects for grade level and a statistically significant interaction among the cognitive styles of teachers in ranking their matched and mismatched students according to sex in relation to the students’ academic achievement scores.     

Co-Producing Children's Sociality in Parent–Teacher Conferences

The aim of this article is to describe how parents and preschool teachers talk about children's interactional skills in parent–teacher conferences in the Swedish preschool and how this can be related to socialization processes. The analyses show that children's communicative skills, such as turn-taking in conversation and co-operation, are considered as important for both parents and teachers and talked about in terms of trouble or success. Children's skills are often assessed by using chronological age as a parameter. Our analysis suggests that the talk about children's interactional skills may be interpreted in terms of deficiency discourses founded primarily on theories in developmental psychology, and that parents, and particularly the teachers, present themselves as socializing agents with regard to children.