| 2. |
- Herrera, Mikael, et al.
(författare)
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Disadvantages of using non-linear video in shallow learning situations – a critical perspective on current trends
- 2017
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Ingår i: KTH Scholarship of Teaching and Learning. - : KTH ECE.
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Konferensbidrag (refereegranskat)abstract
- Video learning material is becoming more expected in education with its reported benefits to in-person lectures and knowledge transfer [1, 2]. Modern educational methods such as flipped classroom and MOOCs implement video as a learning resource. Furthermore, traditional linear (although asynchronous) video has long been challenged by nonlinear video, both in terms of having interactive material [3] and sectioned, indexed contents. Non-linear video has advantages: interactive transcript functions and searchability contribute to non-linear operation, which in turn streamline access to information [4]. Video material can arguably be seen as accommodating shallow learning and an intermediary to be processed in further teaching activities. While nonlinear video is being adopted by learning platforms, we argue that it is important to discuss its capacity for knowledge transfer. We investigated the non-linear way of using video with a critical approach [5]; in particular whether non-linear video streamlines the retrieval of information. The study highlights what might affect the learning negatively. In an observational experiment, the same video was presented to ten participants divided equally into two groups, receiving, respectively, linear video and non-linear video. To observe the efficacy and differences between the groups, subjects were in a controlled environment presented with questions that could only be answered from having seen the video. Participants were given 12 minutes to use video the contents and answer ten questions. The linear group correctly answered 72% of the questions whereas the non-linear answered 64%. The difference between the groups’ interactions has a p-value of 0.061 on a two-tailed t-test, and we therefore suggest that the amount of interactions can to some extent explain the inferior results of the non-linear group. References [1] Bishop JL, and Verleger MA (2013). The flipped classroom: A survey of the research. In: ASEE National Conference, Paper ID #6219. [2] Kim J, (2013). Toolscape: enhancing the learning experience of how-to videos. In: CHI 2013, pp. 2707-2712. [3] Zhang D, Zhou L, Briggs RO, and Nunamaker Jr. JF. (2006). Instructional video in e-learning: Assessing the impact of interactive video on learning effectiveness. Information & Management, 43:1, pp. 15-27. [4] Pavel A, Reed C, Hartmann B, and Agrawala M (2014). Video digests: A browsable, skimmable format for informational lecture videos. In: ACM UIST symposium, pp. 573-582. [5] Bardzell, J & Bardzell, S. (2013). What is â€Critical†about Critical Design? In: CHI 2013, pp. 3297-3306.
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| 3. |
- Petzäll, Kerstin, et al.
(författare)
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Time saved with high speed driving of ambulances
- 2010
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Ingår i: Accident Analysis and Prevention. - : Elsevier BV. - 0001-4575 .- 1879-2057. ; 43:3, s. 818-822
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Tidskriftsartikel (refereegranskat)abstract
- Transportation with road ambulances is increasing because of a concentration of hospitals to larger units, with high quality in the acute care of the patients. The concentration implies longer distances to receiving units, which increases the transportation time. The purpose of the present study was to investigate the time difference in ambulance transportation with high speed emergency driving, compared to non-emergency driving in normal traffic pace. Data was collected from 30 emergency high speed ambulance transportations in urban and rural areas. These transportations were then repeated experimentally with an ambulance driving at normal traffic pace. The average speed and duration for the emergency transportations were shorter than for the experimental driving, both in urban and rural areas. The mean time saved was 2.9 min (urban areas) and 8.9 min (rural areas). Regardless of the patient's clinical status or need of care the emergency transportations were carried out in higher speed than the experimental driving. However, patients with life threatening conditions were not included in this study. Procedures and methods should be developed to identify the patients for which fast transportation has clinical relevance to the outcomes.
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