Meantime , load and pressure increment predictive model has been added and the increment predictive equation has been got 同時引入了負荷/壓力增量預測模型的概念,并給出了增量預測方程。
Furthermore the predictive equation for shear strength proposed by the current design code for highway bridges is suitable for state loads , but not for seismic loads 而我國現行的橋梁規范規定的抗剪強度計算公式只適用于靜力情況,不適用于破壞性地震作用的情況。
For a seismic shear capacity predictive equation for ductility reinforced concrete columns the shear tests of 10 columns and analysis under cyclic load have been made 為此本文進行了10個框架柱試件的試驗研究,于國內首次對鋼筋混凝土框架柱塑性鉸區域剪切性能進行研究。
Second , the issue of approximate aggregation query on the data streams is discussed . meanwhile , the approximate query theories based on the histogram synopsis is proposed , and the autosuited histogram synopsis method and the histogram synopsis synchronization method are provided . third , the problem of predictive aggregate queries on the continuous data streams is researched , and a new predictive aggregate query method based on basic window synopsis and predictive equation is given 本文圍繞連續數據流上的聚集查詢展開討論,首先針對數據流上的精確聚集查詢問題,提出3種改進的基于滑動窗口的精確聚集查詢算法,這三種算法可以在消耗很少內存的情況下提供高效準確的查詢結果;其次討論了連續數據流上的近似聚集查詢問題,給出了基于數據流滑動窗口的直方圖大綱理論,并提出了適用于滑動窗口的自適應直方圖大綱生成算法和大綱同步策略;最后討論了連續數據流上的預測聚集查詢問題,提出了一種基于基本窗口及預測方程方法的預測聚集查詢算法。