31 resultados para adesione pull-off DMA


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A recent television documentary on the Columbia space shuttle disaster was converted to streaming digital video format for educational use by on- and off-campus students in an engineering management study unit examining issues in professional engineering ethics. An evaluation was conducted to assess the effectiveness of this new resource. Use of the video was optional, and about half of the class reported using the video, though usage was 90.0% for off-campus students. Most on-campus students accessed the video on-line, while all off-campus students accessed the video via CD-ROM. Off-campus students rated the educational value of the video higher than on-campus students, and were more likely to indicate that the video helped them understand the issues being studied. Most students were able to view the videos without any technical playback problems.

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This paper considers the delivery and assessment strategies used in two structural mechanics units at Deakin University, a leader in distance education in Australia. The two units have had unacceptably high rates of student failure. Student perceptions of the delivery method were analysed and an investigation was carried out of the performance of 329 (173 on- and 156 off-campus) students enrolled in the two units. An analysis of the assignment, laboratory and examination marks is presented. Consideration is also given to the total marks. The results show that on-campus students performed better in structural mechanics than their off-campus counterparts. Plots of the distributions of student performance for the three assessment methods are provided (for each unit) and high failure rates are linked to low examination marks. Students tended to perform best in assignments and worst in examinations. Parametric statistical tests show a correlation between the marks obtained in continuous assessment and in examinations, and it is therefore proposed that, in order to improve performance, the students must be encouraged to participate fully in all aspects of the course. Many students were unenthusiastic about laboratory practical sessions and did not think they aided their understanding of the theoretical material. Motivation to participate is often dependent on the perceived relevance of a given task and its contribution to the total mark and, thus, to help motivate students to participate fully in the continuous assessment tasks, the authors propose several changes to the delivery methods, as well as to assessment criteria and marking schemes.

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India has built a large pharmaceutical industry through an array of measures in support of domestic firms. The absence of product patents enabled Indian companies to become world leading producers of generic versions of patented drugs. Low costs and a strong engineering tradition continue to sustain competitive strength. The implementation of the World Trade Organization patent regime in 2005 is driving a transformation of the industry. Key elements of the present shake-up include the return of 'big pharma' companies on a large scale and the emergence of several Indian firms that aim to become fullyfledged research-based multinationals. This article provides a description of the development and structure of the Indian pharmaceutical industry and explores questions and challenges arising from its integration into global markets.

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This paper considers the provision of laboratory-practicals for distance-education students in engineering degree programmes. The authors discuss the role of laboratory-practical work in the curriculum and reflect on five methods that can be used to ensure off-campus students have an equivalent practical experience as the traditional on-campus cohort. On-campus sessions, videotapes (or ‘on-line’ movie-clips), computer simulations, home experiment kits and laboratories controlled over the internet are covered. Some examples are given to show how these can be incorporated into the curriculum. A case study then discusses the problem of (and an exemplar solution to) delivering the laboratory-practical components of two microcontroller units offered at Deakin University – a leading provider of distance-education in Australia. In doing so, it leads the reader through the solution process and cites some constraints that drive the choice of model - for example, cost considerations and the need for relevant didactic materials.

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In engineering, distance/off-campus study is an essential element of access to education for those in remote locations and/or seeking to upgrade their qualifications via the lifelong learning route whilst employed. Internationally, engineering education accrediting bodies have moved toward outcomes-based assessment of graduate competency, but are still struggling to relinquish their historical attachment to the measurement of inputs. A genuinely outcomes-based accreditation system based on the demonstrated individual student attainment of appropriate graduate attributes (which might be delivered/gained by a range of means) offers the best way forward for an equitable, representative and socially just undergraduate engineering education system that encourages suitably qualified candidates from a range of social, employment, educational, gender, age and geographic circumstances to aspire to the professional sphere of the engineering workforce. Until outcomes-based education becomes the norm in engineering, it is likely that distance learners in engineering will face significant difficulties.

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Based on a revised SPQ2F instrument (Biggs, 2003, Biggs and Leung, 2001) this exploratory study investigates the differences of the study approaches of on campus and offshore students and their perceptions of the delivery of a marketing unit in an Australian university. The results indicate that there are no significant differences in students’ general approaches to study though their study methods may differ according to the learning contexts and the prior learning backgrounds. The also study reveals that majority of students seem to adopt deep learning than surface learning approaches, though in comparison on campus students appear to have deep learning orientations than the off shore campus students.

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Nestling birds solicit food from their parents with vigorous begging displays, involving posturing, jostling and calling. In some species, such as canaries, begging is especially costly because it causes a trade off against nestling growth. Fitness costs of begging like this are predicted by evolutionary theory because they function to resolve conflicts of interest within the family over the provision of parental investment. However, the mechanism that links these costs with nestling behaviour remains unclear. In the present study, we determine if the relationships between nestling androgen levels, nestling begging intensities and nestling growth rates are consistent with the hypothesis that testosterone is responsible for the trade-off between begging and growth. We test this idea with a correlational study, using fecal androgens as a non-invasive method for assaying nestling androgen levels. Our results show that fecal androgen levels are positively correlated with nestling begging intensity, and reveal marked family differences in each trait. Furthermore, changes in fecal androgen levels between 5 and 8 days after hatching are positively associated with changes in nestling begging intensity, and negatively associated with nestling growth during this time. Although these correlational results support our predictions, we suggest that that experimental manipulations are now required to test the direct or indirect role of testosterone in mediating the trade-off between begging and growth.

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Objective: To investigate the utility associated with subcutaneous infusion (deferoxamine) compared with once-daily oral administration (deferasirox) of iron chelation therapy.

Methods: Interviews using the time trade-off technique were used to estimate preferences (utility) for health states by finding the point at which respondents were indifferent between a longer but lower quality of life (QoL) and a shorter time in full health. Participants (n = 110) were community-based, 51% women, median age 35 years, from four regions in Sydney, Australia. Respondents rated three health states involving equal outcomes for people with thalassemia but with different treatment modalities for iron chelation; an "anchor state" describing a patient receiving iron chelation without administration mode specified, anchor state plus iron chelation via subcutaneous infusion, and anchor state plus iron chelation through once-daily oral medication.

Results:
On an interval scale between 0 (death) and 1 (full health), median (interquartile range) utility of 0.80 (0.65–0.95) for the anchor state, 0.66 (0.45–0.87) for subcutaneous infusion, and 0.93 (0.80–0.97) for once-daily oral administration was obtained. The mean (median) difference of 0.23 (0.27) between the two treatments was statistically significant (Wilcoxon-signed rank test, P < 0.001). Subcutaneous infusion was associated with a mean (median) utility 0.13 (0.14) lower than the anchor state (P < 0.001), and once-daily oral treatment had a utility 0.10 (0.13) higher (P < 0.001).

Conclusion:
Community respondents associate oral administration of an iron chelator such as deferasirox with enhanced QoL compared with subcutaneous treatment. Assuming equal safety and efficacy, QoL gains from once-daily oral treatment compared with subcutaneous infusion are significant.

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The substantive field of the thesis is the sociology of distance education. The issues investigated centre on the relationship between off-campus students and the institutions of higher education with which they enrol, in which the first year experience is construed as an encounter between the students’ personal contexts and institutional cultures. A theoretical framework is constructed which synthcsises elements of phenomenology, hermeneutics and feminist theory. The author reports research into the way a small sample of people experienced off-campus study. The students selected resided in Victoria, Australia, and were enrolled with one of two Victorian tertiary institutions: the (then) Gippsland Institute of Advanced Education and Deakin University. Using a case study approach, the subjective experiences of the students were studied by means of a series of interviews which took place at their homes or places of employment in the period January 1988 to November 1989. Methodological issues relating to the application of hermeneutic principles to the use of interviews in educational research are explored. The results of the interpretation of the interview material are presented in terms of an integrationist model of socialisation. The thesis argued is that certain theoretical and practical issues in distance education are best understood as social and cultural phenomena rather than as technical problems. The implications of the findings about the effects of gender and culture on student experience are discussed in relation to the issues of access and equity, student support, and models of teaching and learning.