Snapshot replication can be used by itself , but the snapshot process which creates a copy of all of the objects and data specified by a publication is also commonly used to provide the initial set of data and database objects for transactional and merge publications 快照复制可由其自身使用,但是快照处理(负责创建由发布所指定的所有对象和数据的副本)通常还用于为事务性发布与合并发布提供初始的数据和数据库对象集。
Uml 2 considers structure diagrams as a classification ; there is no diagram itself called a " structure diagram . " however , the class diagram offers a prime example of the structure diagram type , and provides us with an initial set of notation elements that all other structure diagrams use Uml 2把结构图看成一个分类;这里并不存在称为“结构图”的图。然而,类图提供结构图类型的一个主要实例,并为我们提供一组记号元素的初始集,供所有其它结构图使用。
We show that under the consideration of discounted factor , jobs in the p - maximal initial set / * of module m should be processed prior to other jobs in module m , and the schedule is the optimal if the jobs in i * are n ' t be preempted by the jobs in n i * . this result is a extension of lawler ' s method for minimizing total weighted completion time with a series - parallel precedence 证明了在考虑折扣因子的条件下,模块m的因子最大初始集合i中的任务优先于模块m中的其他任务,并且被连续加工所得的排序为最优排序:该结果推广了lawler用来求解约束为串并有向图的单机加权总完工时间问题的由底向上搜索分解树的方法。
Artificial feature landmark is first leaded into vision computation in this paper . our approach is to extract marker points and to use correlation to find an initial set of matches , then use relaxation , robust recover epipolar geometry and reprojection to discard false matches in this set and find more matches 首次将人工图标引入视觉计算,通过提取人工特征点,采用灰度相关法进行初始匹配,再利用松弛法、鲁棒估计基础矩阵恢复极线约束和结构再投影法剔除错误匹配点、寻找更多匹配对。
Some conclusions are drawn : the compressive strength and flexural strength of cubic specimens of steel fibre reinforced concrete increase with the dosage of steel fibre ; without change of dosage of steel fibre , the elastic modulus of steel fibre reinforced concrete increases with the concrete age ; steel fibre reinforced concrete is of obvious function in cracking resistance , but there is no obvious function in avoidance of cracking ; for both common concrete and steel fibre reinforced concrete , the variation of the internal temperature is different from that of the external temperature before the initial set of concrete , and the internal strain of both two kinds of concrete is great , and , in general , the variation of strain of common concrete is much greater than that of the steel fibre reinforced concrete ; after the initial set of concrete , the variation of the internal temperature of both two kinds of concrete is similar to that of the external temperature , and the variation of the internal strain is relatively small 结果表明:钢纤维混凝土立方体的杭压强度、抗弯强度随着钢纤维掺量的增加而增大;在钢纤维掺量不变的情况下,钢纤维混凝土的抗压弹性模量会随着龄期的增加而提高;钢纤维对混凝土的阻裂作用很明显,而对混凝土起裂的限制作用不明显;在混凝土初凝之前,无论是普通混凝土还是钢纤维混凝土,内部温度的变化规律与外界温度的变化规律不同,并且此阶段混凝土内部应变的变幅很大,普通混凝土应变的变幅要比钢纤维混凝土应变的变幅大得多;在混凝土初凝之后,无论是普通混凝土还是钢纤维混凝土,内部温度的变化规律与外界温度的变化规律相同,并且此阶段混凝土内部应变的变幅很小。