Using student-led manufacturing in makerspaces to support transition into engineering higher education

[EN] This paper reports our preliminary findings from utilising The iForge, astudent-run makerspace, as a resource for curriculum-based learning, inplace of traditional timetabled workspace access for students. We show howthis enabled us to offer projects that were less structured, less constrained bytimetables, and more open-ended. We also explain how we were able toembed the development of professional skills – particularly teamworking –into the curriculum. Results show no negative impact on student satisfactionor grades, and positive impact in terms of staff time and flexibility forstudents to work independently around their individual timetables. Weconclude by highlighting some areas for further work, and makerecommendations for colleagues wishing to explore more creative practicalprojects in their own contexts.Mylon, P.; Wood, G.; Dolmansley, T. (2019). Using student-led manufacturing in makerspaces to support transition into engineering higher education. En HEAD'19. 5th International Conference on Higher Education Advances. Editorial Universitat Politècnica de València. 253-260. https://doi.org/10.4995/HEAD19.2019.9502OCS25326

An evaluation of dexterity and cutaneous sensibility tests for use with medical gloves

© 2015 Institution of Mechanical Engineers.The ability of selected dexterity and cutaneous sensibility tests to measure the effect of medical glove properties (material, fit, and number of layers) on manual performance was analyzed. Manual performance testing of gloves to-date has focused on thicker gloves where the effects are more obvious. However, clinicians have reported dissatisfaction with some medical gloves and a perceived detriment to performance of new materials compared to latex. Three tests (Purdue Pegboard Test, Crawford Small Parts Dexterity Test, and Semmes-Weinstein Monofilaments) were performed by 18 subjects in five hand conditions (ungloved; best-fitting, loose-fitting and a double layer of latex examination gloves; best-fitting vinyl gloves). Tests were performed in the ungloved condition first, and the order of the gloved tests was randomized. Learning behavior was also measured. The Purdue test showed a significant effect of hand condition, but no differences between latex and vinyl. No significant effect of hand condition was found in the Crawford "Pins and Collars" test, but the "Screws" test showed promising discrimination between glove types. The Monofilaments test showed a significant effect of hand condition on cutaneous sensibility, particularly a reduction when "double-gloving," but no significant differences between glove types. Existing tests show some ability to measure the effect of gloves and their properties on manual performance but are not comprehensive and require further validation. In order to fully describe the effects of medical gloves on manual performance, further tests should be designed with greater resolution and that better replicate clinical manual tasks

Performance of Medical Gloves

A need for a more scientific approach to medical glove design, which incorporated performance requirements such as dexterity and tactility, was identified from discussions with manufacturers and a review of relevant literature. Based on the results of a review of existing test methods and interviews with a wide range of practitioners, a number of existing tests were identified for development and a number of new tests were proposed. The test apparatus and methods were designed, refined and validated with small groups of participants, allowing recommendations to be made for a battery of realistic, repeatable tests by which medical glove performance can be comprehensively characterised. The recommended tests covered three main areas of performance: manual dexterity, tactility, and grip and friction. As well as existing tests, including the Purdue Pegboard Test, the Crawford Small-Parts Dexterity Test and the Semmes-Weinstein Monofilaments, new tests were developed that better simulated the tasks carried out by practitioners, including a suturing test, the Simulated Medical Examination Tactility Test, the Pulse Location Test and the Roughness Perception Test. Apparatus was also designed to measure the effect of gloves on grasping forces and to compare static frictional properties of gloves. Grasp force and friction measurements were taken for examination gloves using human subjects and with a specially-designed anthropomorphic device. The results were compared with those obtained using a number of other friction measurement methods. There was little consistency between the test results, and none gave a definitive answer as to which glove produced the highest friction in any given situation. Further development of the apparatus and validation of the method was recommended, as well as a more comprehensive study of glove friction and the effects of lubrication. As part of the validation of the selected methods, analysis was carried out into the effect of glove material, thickness and fit on performance and the relationship between perceived and measured performance. Initial results suggested that glove fit had a greater effect on dexterity than tactility, with looser gloves reducing dexterity and tighter gloves reducing tactility. Glove thickness was found to be a significant factor in tactility, and in manual dexterity, where tactile feedback is required; thicker gloves and ‘double-gloving’ produced a reduction in tactility compared to thinner, single-layered gloves, and hence affected the ability to manipulate objects. Analysis of user perception of performance and of the effect of glove material properties did not produce clear trends. However, initial findings suggested that, contrary to user perception, natural rubber latex did not perform significantly better than alternatives such as nitrile and vinyl. A number of possible explanations for the discrepancy were proposed, and recommendations were made for future work with a larger sample size, including analysis of stress and fatigue levels and performing tests in lubricated conditions.EThOS - Electronic Theses Online ServiceGBUnited Kingdo