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基于语义模型的实时数据有效性保证策略研究
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作者 汤小春 田凯飞 《计算机科学》 CSCD 北大核心 2017年第12期11-16,22,共7页
实时数据的有效性与CPU处理能力是信息物理融合系统(CPS)中的一对矛盾,提高采样频率可以保证实时数据的有效性,但是会增加CPU负荷,降低系统的计算能力。首先,利用实时数据的语义特点建立数据的有效性模型;然后,通过在CPU空闲期间设置预... 实时数据的有效性与CPU处理能力是信息物理融合系统(CPS)中的一对矛盾,提高采样频率可以保证实时数据的有效性,但是会增加CPU负荷,降低系统的计算能力。首先,利用实时数据的语义特点建立数据的有效性模型;然后,通过在CPU空闲期间设置预调度任务,合理地利用数据有效性模型,设置新的有效性间隔和实时数据的更新事务的开始时间,减少CPU执行时间;最后,在棉花采摘锭的自转、公转及油压等参数上,对基于语义模型的实时数据有效性保证策略进行了系统的评价,结果表明所提方法能够减少15%左右的CPU负荷。 展开更多
关键词 实时数据 语义模型 有效性保证 信息物理融合系统
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现阶段解决企业电子档案“有效性保证”问题的方法
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作者 焦筱巧 方泽龙 《电力档案》 2001年第4期19-20,共2页
关键词 企业 档案工作 电子档案 有效性保证 档案载体有效性
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Learning curves in minimally invasive esophagectomy 被引量:2
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作者 Frans van Workum Laura Fransen +1 位作者 Misha DP Luyer Camiel Rosman 《World Journal of Gastroenterology》 SCIE CAS 2018年第44期4974-4978,共5页
Surgical innovation and pioneering are important for improving patient outcome, but can be associated with learning curves. Although learning curves in surgery are a recognized problem, the impact of surgical learning... Surgical innovation and pioneering are important for improving patient outcome, but can be associated with learning curves. Although learning curves in surgery are a recognized problem, the impact of surgical learning curves is increasing, due to increasing complexity of innovative surgical procedures, the rapid rate at which new interventions are implemented and a decrease in relative effectiveness of new interventions compared to old interventions. For minimally invasive esophagectomy(MIE), there is now robust evidence that implementation can lead to significant learning associated morbidity(morbidity during a learning curve, that could have been avoided if patients were operated by surgeons that have completed the learning curve). This article provides an overview of the evidence of the impact of learning curves after implementation of MIE. In addition, caveats for implementation and available evidence regarding factors that are important for safe implementation and safe pioneering of MIE are discussed. 展开更多
关键词 Minimally invasive esophagectomy Learning curve Pioneering Safe implementation Profciency gain curve
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