...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of human-computer studies >Performance-based usability evaluation of a safety information and alarm system
【24h】

Performance-based usability evaluation of a safety information and alarm system

机译：基于性能的安全信息和警报系统的可用性评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Evaluation of the appropriateness of information technical systems for complex professional usage in safety-critical contexts poses significant methodical and practical challenges. In this study, the usability of a Safety Information and Alarm Panel (SIAP) in a nuclear power plant control room was tested. An integrated validation concept was used that included a new approach to measuring system and operator performance in complex work environments. The tested system was designed to aid the operators in severe disturbance and emergency situations. It had already been implemented at a nuclear power plant. The study was conducted in a full-scope training simulator. The results verified that an acceptable level of performance could be achieved when using the SIAP. When the operators' practices were analysed by a habit-centred analysis, it was discovered that the effects of the SIAP differed between crews and between test scenarios. Thus, the SIAP tended to promote coherence of practices but reduce situatively attentive action. In diffuse task contexts the tool failed to support the shift supervisor's control of the overall process situation, his awareness of the crew's work load and his ability to update the crew's awareness of the process. The operators reported that the system supported their process control activity and reduced stress in the situation, but the shift supervisors and operators also noticed some possible negative effects of the tool. These subjective evaluations corresponded to the effects observed in practice. The results revealed the complexity of the implementation of new tools into professional practice. It was proposed that a validation project should focus on the trajectory of development of the entire distributed cognitive system instead of comprehending validation studies as tests of the effects of information systems on a pre-defined process output. Formative evaluation criteria are needed in projecting distributed cognitive systems. (c) 2005 Elsevier Ltd. All rights reserved.
机译：在安全关键的情况下，评估信息技术系统对复杂专业用途的适用性提出了重大的方法和实践挑战。在这项研究中，测试了安全信息和警报面板（SIAP）在核电站控制室中的可用性。使用了集成验证概念，其中包括在复杂工作环境中测量系统和操作员绩效的新方法。经过测试的系统旨在帮助操作人员在严重干扰和紧急情况下使用。它已经在核电厂实施。该研究是在全范围训练模拟器中进行的。结果证明，使用SIAP时可以达到可接受的性能水平。通过以习惯为中心的分析来分析操作员的做法时，发现SIAP的效果在机组人员之间和测试场景之间有所不同。因此，亚太统计所倾向于促进做法的连贯性，但会减少现场注意行为。在分散任务的情况下，该工具无法支持值班主管对整个过程状况的控制，他对乘员工作量的了解以及他对乘员对过程的了解的更新能力。操作员报告说，该系统支持他们的过程控制活动并减轻了情况的压力，但是值班主管和操作员还注意到该工具可能产生的负面影响。这些主观评价与实践中观察到的效果相对应。结果揭示了在专业实践中实施新工具的复杂性。有人提出，一个验证项目应该集中在整个分布式认知系统的发展轨迹上，而不是把验证研究作为对信息系统对预定过程输出的影响的测试。在设计分布式认知系统时需要形成性评估标准。 （c）2005 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号