Mapping the development of a new MA programme in higher education: comparing privately held perceptions of a public endeavour     

Ian Kinchin  Anesa Hosein  Emma Medland  Simon Lygo-Baker  Steven Warburton  Darren Gash 《Journal of Further & Higher Education》2017,41(2):155-171

After spending a year working on the development of a new online Master’s programme in higher education, members of the development team were interviewed to reveal their thoughts about the nature of the programme. The dialogue of each interview was summarised as a concept map. Analysis of the resulting maps included a modified Bernsteinian analysis of the focus of the concepts included in terms of their semantic gravity (i.e. closeness to context) and the degree of resonance with the underpinning regulative discourse of the programme. Data highlight a number of potential issues for programme delivery that centre around the use of appropriate language to manage student expectations in relation to the process of learning and the emotional responses this can stimulate, as well as the tensions that can be foregrounded between the demands of teaching and research within a university environment.  相似文献   

Effects of Pre‐structuring Discussion Threads on Group Interaction and Group Performance in Computer‐supported Collaborative Argumentation     

C. Darren Brooks  Allan Jeong 《Distance Education》2006,27(3):371-390

This study examined the effects of pre‐structuring discussion threads on group performance in computer‐supported collaborative argumentation where students labeled their messages as arguments, challenges, supporting evidence, and explanations on a threaded discussion board. In the pre‐structured group students were required to post supporting and opposing arguments to designated and separate discussion threads. In the control group no discussion threads were designated for posting supporting and opposing arguments. The mean number of challenges elicited per argument was 64% greater with pre‐structured threads (ES = +.47). No significant differences were found in the mean number of counter‐challenges, supporting evidence, and explanations posted in reply to challenges. The findings suggest that prestructured discussion threads can increase the frequency of argument→challenge exchanges needed to initiate critical discourse.  相似文献   

The effect of translational and rotational traction on lower extremity joint loading     

John W. Wannop  Darren J. Stefanyshyn 《Journal of sports sciences》2016,34(7):613-620

Previous studies have linked footwear traction to lower extremity non-contact injury; however, these studies mainly focussed on rotational traction exclusively. While studies have shown that increases in traction lead to increases in joint loading, represented by joint moments, these studies failed to determine how the individual components of rotational and translational traction affect joint loading. Therefore, this study investigated how each component of traction independently affects lower extremity joint loading. Traction testing was performed using a robotic testing machine on three shoes that had independent alterations of translational and rotational traction. All testing was conducted on a sample piece of artificial turf. Kinematic and kinetic data were then collected on 10 athletes performing two cutting movements in each shoe condition. As rotational and translational traction were independently altered, decreased rotational traction led to significant decreases in transverse and frontal plane joint loading at the ankle and knee joints, while increases in translational traction led to increases in frontal plane joint loading at the ankle and knee joints. Increases in joint loading in the transverse and frontal planes are one of the possible mechanisms of lower extremity non-contact injury. Both translational and rotational traction can independently alter the joint loading.  相似文献   

Hearing is believing: Birds learn fear     

Christopher B. Sturdy  Darren S. Proppe 《Learning & behavior》2016,44(3):205-206

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Inclusive and exclusive masculinities in physical education: a Scottish case study     

Darren Campbell  John Kelly  Sarah MacIsaac 《Sport, Education and Society》2018,23(3):216-228

This research examines how adolescent males (ages 16–17 years) construct and experience their masculine identities within the context of physical education (PE). A class of 23 boys and 3 girls from a state secondary school in Scotland were observed over a period of 3 months. During the third month, five of the observed pupils volunteered to take part in a conversation with the lead researcher which was guided by their participation in a repertory grid task. The same five participants also took part in a one-to-one semi-structured interview. The analysis of the evidence revealed that the adolescent pupils internalised and performed an orthodox form of masculinity that centred on strength, pain tolerance and the policing of others. More inclusive masculinities appeared to be emerging, however, the hypermasculine and public nature of the PE environment made it very difficult for the pupils to freely adopt or perform these alternative, more inclusive forms of masculinity. Additionally, pupils who did perform traits associated with inclusive masculinity often exhibited a high degree of social and physical capital. In order to facilitate a culture where all individuals feel free to express their gendered identities, teachers are encouraged to recognise, promote and celebrate multiple masculinities. This could create a safer learning environment for pupils and help prevent identities from being ‘destroyed’ in PE.  相似文献   

Human and non-human tensions in socioscientific issues and the oil sands in Canada     

Hoeg  Darren 《Cultural Studies of Science Education》2020,15(2):415-422

Cultural Studies of Science Education - This commentary discusses SSIs in relation to environmental ethics. In their article, Augusto Macalalag Jr., Joseph Johnson and Michelle Lai note tensions...  相似文献   

Effects of movement velocity and training frequency of resistance exercise on functional performance in older adults: a randomised controlled trial     

Darren L. Richardson  Michael J. Duncan  Alfonso Jimenez  Paul M. Juris  Neil D. Clarke 《European Journal of Sport Science》2019,19(2):234-246

Objectives: To investigate the effects that high-velocity, low-load (HVLL) and low-velocity, high-load (LVHL) resistance exercise, performed once or twice-weekly, have on indices of functional performance (primary outcome), maximal strength, and body composition (secondary outcomes) in older adults.

Methods: In a randomised, controlled, multi-armed, parallel design, 54 moderately-highly active, but resistance exercise naïve older adults (aged 60–79 years), attended baseline and post-10-week intervention assessment sessions. Physical and functional assessments were completed, and predicted one-repetition maximums (1-RM) were obtained for eight exercises. Participants were then randomised into one of five conditions: HVLL once-weekly (HVLL1: n?=?11) or twice-weekly (HVLL2: n?=?11), LVHL once-weekly (LVHL1: n?=?10) or twice-weekly (LVHL2: n?=?11), no-exercise control condition (CON: n?=?11). The HVLL conditions completed 3 sets of 14 repetitions at 40% 1-RM and the LVHL conditions, 3 sets of 7 repetitions at 80% 1-RM. In total, 50 participants completed all testing and were included in analyses.

Results: Only LVHL2 improved 30-sec chair stand performance (p?=?.035; g?=?0.89), arm curls (p?=?.011; g?=?1.65) and grip-strength (p?=?.015; g?=?0.34) compared to CON. LVHL2 improved maximal strength compared to CON for 7/8 exercises (p?p?Conclusion: Possibly due to the lower intensity nature of the HVLL conditions, LVHL, twice-weekly was most beneficial for improving functional performance and strength in moderately-highly active older adults. Therefore, we recommend that exercise professionals ensure resistance exercise sessions have sufficient intensity of effort and volume, in order to maximise functional performance and strength gains in older adults.  相似文献   

Scan and Learn: Quick Response Code Enabled Museum for Mobile Learning of Anatomy and Pathology     

Sreenivasulu Reddy Mogali  Ranganath Vallabhajosyula  Chee Hon Ng  Darren Lim  Eng Tat Ang  Peter Abrahams 《Anatomical sciences education》2019,12(6):664-672

In the past, medical museums played a significant role in anatomy and pathology training. The attraction of medical museums has declined recently due to the emergence of information technology and innovative medical curricula. An innovative mobile learning platform has been developed using quick response (QR) codes for the museum specimens at the Lee Kong Chain School of Medicine, Singapore. High-quality images of the potted specimens were captured and combined into an album and a video using Adobe Acrobat Pro 9 and Windows Movie Maker, respectively. Subsequently, QR codes were generated linking to PDF documents with annotations, pathology, and clinical history concerning the specimens. Quick response codes were piloted in gastrointestinal teaching module for Year 2 medical students. Survey responses were obtained from students to verify the efficacy of QR as a learning tool. The majority of students either agreed or strongly agreed that it was easy to access the information about the specimen with QR codes (4.47 ± 0.84), while 96% of students agreed that they are able to correlate the specimen with the annotated images (4.56 ± 0.56). The majority of students (78%) agreed that QR codes are useful for their learning (4.22 ± 0.87), while 75% of students felt QR codes motivate them to visit Anatomy Resource Centre. Most of the students agreed that QR codes are useful for revision of materials (4.13 ± 1.07) and independent learning (4.38 ± 0.87). These findings suggest that QR codes are not only effective for students learning but also enhance their exploration experience with the museum specimens.  相似文献   

ApoStream?, a new dielectrophoretic device for antibody independent isolation and recovery of viable cancer cells from blood     

Vishal Gupta  Insiya Jafferji  Miguel Garza  Vladislava O. Melnikova  David K. Hasegawa  Ronald Pethig  Darren W. Davis 《Biomicrofluidics》2012,6(2)

Isolation and enumeration of circulating tumor cells (CTCs) are used to monitor metastatic disease progression and guide cancer therapy. However, currently available technologies are limited to cells expressing specific cell surface markers, such as epithelial cell adhesion molecule (EpCAM) or have limited specificity because they are based on cell size alone. We developed a device, ApoStream^™ that overcomes these limitations by exploiting differences in the biophysical characteristics between cancer cells and normal, healthy blood cells to capture CTCs using dielectrophoretic technology in a microfluidic flow chamber. Further, the system overcomes throughput limitations by operating in continuous mode for efficient isolation and enrichment of CTCs from blood. The performance of the device was optimized using a design of experiment approach for key operating parameters such as frequency, voltage and flow rates, and buffer formulations. Cell spiking studies were conducted using SKOV3 or MDA-MB-231 cell lines that have a high and low expression level of EpCAM, respectively, to demonstrate linearity and precision of recovery independent of EpCAM receptor levels. The average recovery of SKOV3 and MDA-MB-231 cancer cells spiked into approximately 12 × 10⁶ peripheral blood mononuclear cells obtained from 7.5 ml normal human donor blood was 75.4% ± 3.1% (n = 12) and 71.2% ± 1.6% (n = 6), respectively. The intra-day and inter-day precision coefficients of variation of the device were both less than 3%. Linear regression analysis yielded a correlation coefficient (R²) of more than 0.99 for a spiking range of 4–2600 cells. The viability of MDA-MB-231 cancer cells captured with ApoStream was greater than 97.1% and there was no difference in cell growth up to 7 days in culture compared to controls. The ApoStream device demonstrated high precision and linearity of recovery of viable cancer cells independent of their EpCAM expression level. Isolation and enrichment of viable cancer cells from ApoStream enables molecular characterization of CTCs from a wide range of cancer types.  相似文献   

Footwear traction at different areas on artificial and natural grass fields   总被引：1，自引：1，他引：0  

John W. Wannop  Geng Luo  Darren J. Stefanyshyn 《Sports Engineering》2012,15(2):111-116

Footwear traction has been linked to lower-extremity injuries with the theory that higher traction leads to an increased incidence of injury. Recent studies have challenged this showing similar injury rates on artificial turf, which has higher traction than natural grass. This could suggest that the magnitude of traction may not be as relevant for injury as relative changes from one location to another, due to inconsistencies in the surface. The purpose of this study was to compare the traction at various locations on an in-fill artificial turf and natural grass surface. A portable traction tester measured the traction of three shoes at six locations on both surfaces. The results indicate that over the course of a season the traction on natural grass changes considerably, especially rotational traction. Surprisingly the artificial turf surface also had areas of high and low traction due to the movement of the in-fill material during play.  相似文献