Actual-temporal adds a validity interval to track when a fact is valid in actual time. 实际时态用“有效时间区间”来跟踪在实际的时间内某一事实何时是有效的。
This paper discusses all kinds of timing characteristics about real time data including external validity interval, mutual validity interval, sampling simultaneous interval, data deadline etc. 本文详细讨论了实时数据的各种定时特征,包括数据的外部有效期、相互一致性、采样同步性、数据截止期等;
Varies of uncertain analysis methods used in the area of engineering is reviewed in this thesis. The feasibility and validity of interval analysis technique applied in geotechnical engineering are studied as a key point. 本文在全面回顾不确定性分析方法在工程领域研究进展的基础上,重点研究了区间分析技术在边坡工程领域中应用的可行性及有效性。
The validity of the model is tested through the comparison between the minimum time interval between trains spaced by automatic block signals and the theory value as well as the analog value of the maximum speed of the train. 通过对列车最小追踪间隔时间与列车最大速度的理论值和模拟值的对比,验证了该模型的有效性。