摘要
目的为了查找系统中存在的问题,提升系统的可用性,对一套航天员虚拟训练系统进行可用性评估。方法设计了一份可用性主观问卷,综合运用用户测试法、事后问卷调查法和访谈法,从任务绩效、易学性、易用性、交互性、沉浸感、学习有效性、舒适性、满意度及副作用等指标开展实验研究。结果系统在任务绩效测试中已满足基本要求;易学性、易用性、交互性、沉浸感、学习有效性等指标显著高于中值3分,副作用程度较低,具备较好的可用性。结合访谈结果,对系统中存在的问题进行了挖掘,获得系统开发人员较高认可度,可为系统改进提供参考。结论该评估实验可为系统可用性的提升提供指导。
Objective To find the potential problems of the system and to improve its usability,the usability evaluation of an astronaut virtual training system was conducted. Methods A subjective questionnaire of usability was designed. The user test,the post-hoc questionnaire and the interview methods were adopted to study the system usability in the aspects of performance,easiness of learning,easiness of use,interaction,sense of immersion,learning effectiveness,comfort,satisfaction,and side-effect etc. Results The system met the basic requirements in the task performance test. The easiness of learning,easiness of use,interaction,sense of immersion,and learning effectiveness were all significantly higher than the median 3 points,and the degree of side-effect was low. The usability of this system was good. In addition,the usability problems were recognized and most of them were accepted by the system developer which may serve as a good reference for further system improvement. Conclusion The evaluation experiment could be used as a guideline for system improvement.
引文
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