Le modèle d’acceptation des technologies depuis 1986 : 30 ans de développement

This article is a theoretical analysis of the use of the technology acceptance model (TAM) and synthesizes the results of twelve literature reviews and meta-analyses. We analyzed their content according to four thematic axes: the validity of the TAM, the evaluation of the role of each of its variables, the influence of external variables and moderators and the intellectual development of the TAM. The literature globally confirms the reliability of each of the variables in the TAM and the relevance of the relationships between these variables. However, weaknesses are noted and recommendations made for future research, such as the inclusion of more contextual information on the use of technologies and on participant characteristics, as well as additional various measurement methods of use and their benefits. A notable difference has been identified in the relationship between TAM's variables and the objective and subjective measures of the actual use of technologies. In addition, objective measures have been included in few practical studies, but have generally included small samples. Another weakness of the TAM is its significantly lower capacity to predict the volume (time spent on use over a given period), as well as the frequency of use (number of uses over a given period) of a technology, compared to the simple prediction of use.     

Effect of motorcycle lighting configurations on drivers’ perceptions of closing during nighttime driving

ObjectiveThe aims were to better understand how drivers perceive an approaching set of motorcycle headlights during nighttime driving and to determine whether alternative motorcycle headlight configurations improve drivers’ perceptual judgments of closing for an oncoming motorcycle.BackgroundMotorcyclists account for a disproportionate number of roadway fatalities, especially at night. One potential cause of this is drivers’ misjudgments of a motorcycle’s approach.MethodThe first experiment examined whether drivers were more sensitive to horizontal or vertical optical expansion and whether drivers could integrate these two dimensions to achieve a lower looming threshold. A second experiment built on these results to test whether alternative headlight configurations that maximized size were better than other motorcycle headlight configurations and a car’s headlights. In both experiments, participants were instructed to press a button to indicate when they first perceived an oncoming vehicle to be closing under nighttime driving conditions.ResultsHeadlight orientation did not affect when drivers perceived closing, and drivers were not able to integrate optical expansion from multiple dimensions in a way that achieves a lower looming threshold. However, the alternative motorcycle headlight configurations that accentuated the full extent of a motorcycle’s size resulted in drivers perceiving closing sooner than other motorcycle headlight configurations but not sooner than a car.ConclusionDrivers perceive closing sooner for larger headlight configurations except when the headlight configurations are relatively small, in which case the effect of headlight size is attenuated.ApplicationDrivers’ perceptual judgments of motorcycles may improve when motorcycles have headlights that span its full height.     

From da Vinci to CAD and beyond

Here what I would like to accomplish is to set something of the stage from which the growing recognition of what I shall now term technoscience’s visualism—a term which can accommodate both sciences and engineering, and both imaging and design practices—takes its recognition. I shall very briefly look at the ‘godfathers and peers’ who help set this stage, and then proceed to an examination of a few moments in the development of visualism from da Vinci to computer assisted design (CAD) and beyond.     

Forum: A New Culture of Learning

These brief essays by Mary Hess, Eugene Gallagher, and Katherine Turpin are solicited responses from three different contexts to the provocative book by Douglas Thomas and John Seely Brown, The New Culture of Learning (2011). Mary Hess writes from a seminary context, providing a critical summary of the authors' major concepts and their ramifications, positive and negative, for theological education and the church. Eugene Gallagher writes from a liberal arts setting, identifying characteristics of the face‐to‐face classroom that would go missing in a careless adoption of online learning environments. Finally, Katherine Turpin reports from the classroom, chronicling her experience in a course she redesigned for a graduate theological setting to employ some of the authors' pedagogical principles and strategies. Together, these responses offer critical appreciation and constructive critique of the work Thomas and Seely Brown have done – and point the conversation forward.