There is now widespread recognition of the changing nature of students in higher education: they are demographically diverse, have extensive external time demands, and expect greater flexibility and support during their programs. As a consequence of this and other changes to the higher education sector, many universities worldwide have introduced a range of information and communication technologies to provide students with flexible options for study. Included in these options are web-based lecture technologies (WBLT), designed to digitally record lectures for delivery over the web. This paper reports on recent Australian research into the impact of WBLT on learning and teaching which indicates that, while many academics recognise the changing nature and needs of their students and have introduced WBLT as a consequence, many have not reconceptualised their curriculum and its delivery to meet these changing circumstances. The central premise in this paper is that the introduction of WBLT has been disruptive in nature and has provided a lens with which to view several emerging issues: the blurring of study patterns between internal and external enrolment modes; the role of lectures in technology rich environments; and the changing nature of teaching when technologies are introduced into the curriculum.

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The uptake of web-based lecture technologies for recording and delivering live lectures has increased markedly in recent years. Students have responded positively, and for many their use has transformed learning -freeing them up from rigid timetables by providing choice in lecture attendance and supporting learning by extending the lecture experience and enabling them to revisit key concepts and ideas in their own time. Less transformational has been the impact on teaching. Although changing attendance patterns and disquiet about the quality of learning are of concern to many, lecturers have largely responded by simply modifying lectures. For most, the challenges of catering for the learning needs of a cohort with variable lecture attendance have not been addressed at a whole of the curriculum level. The technologies have been added on, rather than integrated into the curriculum. This paper will review the changes taking place in learning and teaching, explore the reluctance to embrace more wholesale change to the curriculum, and discuss the implications for institutions in the face of ongoing change.

Web-based lecture technologies (WBLT) have gained popularity amongst universities in Australia as a tool for delivering lecture recordings to students in close to real time. This paper reports on a selection of results from a larger research project investigating the impact of WBLT on teaching and learning. Results show that while staff see the advantages for external students, they question the extent to which these advantages apply to internal students. In contrast both cohorts of students were positive about the benefits of the technologies for their learning and they adopted similar strategies for their use. With the help of other technologies, some external students and staff even found WBLT useful for fostering communication between internal and external students. As such, while the traditional boundary between internal and external students seems to remain for some staff, students seem to find the boundary much less clear.

Objectives-To assess the incidence and significance of anticardiolipin antibodies after myocardial infarction and in unstable angina.Design-A prospective study of all patients under 60 admitted to the coronary care unit over a 12 month period with a diagnosis of acute myocardial infarction who were followed up for a further 12 months. Patients admitted with unstable angina were similarly assessed but not followed up. Anticardiolipin antibody concentrations were compared with those of age matched controls.Setting-A district general hospital.Patients-307 patients with acute myocardial infarction and 160 patients with unstable angina.Results-Anticardiolipin antibody concentrations in the two patient groups did not differ significantly from those in the control groups. Antibody concentrations were not related to a history of angina or myocardial infarction nor were they related to subsequent cardiovascular complications.Conclusion-This study shows no significant association between anticardiolipin antibody concentrations and either myocardial infarction or unstable angina. (Br Heart3r 1993;69:391-394)