System and method for index reorganization using partial index transfer in spatial data warehouse
    1.
    发明授权
    System and method for index reorganization using partial index transfer in spatial data warehouse 有权
    在空间数据仓库中使用部分索引转移的索引重组系统和方法

    公开(公告)号:US07634487B2

    公开(公告)日:2009-12-15

    申请号:US11433258

    申请日:2006-05-12

    IPC分类号: G06F17/00

    摘要: The present invention is to provide a system and a method for index reorganization using a partial index transfer in a spatial data warehouse that minimize costs of search, split and readjustment for the index reorganization by organizing and transferring clusters with partial indexes in conformity with an index structure so that the partial indexes can be inserted directly into the existing index, thus ensuring continuous and stable data processes, the index reorganization method comprising: a first step of clustering data extracted from the source database in conformity with an index structure via the builder; a second step of generating partial indexes and transferring the partial indexes to a cluster generated according to the clustering; a third step of recording the transferred partial indexes in physically consecutive spaces, not allocated, in the spatial data warehouse server; and a fourth step of inserting the recorded partial indexes in an existing index.

    摘要翻译: 本发明是提供一种使用在空间数据仓库中部分索引转移的索引重组的系统和方法,其通过组织和转移具有符合索引的部分索引的簇来最小化用于索引重组的搜索,拆分和重新调整的成本 结构,使得部分索引可以直接插入到现有索引中,从而确保连续和稳定的数据处理,索引重组方法包括:通过构建器将从源数据库提取的数据聚类成与索引结构一致的第一步; 产生部分索引并将部分索引传送到根据聚类生成的集群的第二步骤; 在空间数据仓库服务器中记录未分配的物理连续空间中传送的部分索引的第三步骤; 以及在现有索引中插入记录的部分索引的第四步骤。

    Polymer electrolyte composition, method for preparing the same and lithium secondary battery employing the same
    2.
    发明授权
    Polymer electrolyte composition, method for preparing the same and lithium secondary battery employing the same 失效
    聚合物电解质组合物,其制备方法和使用其的锂二次电池

    公开(公告)号:US06403266B1

    公开(公告)日:2002-06-11

    申请号:US09484535

    申请日:2000-01-18

    IPC分类号: H01M1040

    摘要: Disclosed are a polymer electrolyte composition, a method for preparing the same and a lithium secondary battery employing the same. The polymer electrolyte composition comprises a polymer mixture and a solvent in which a lithium salt is disclosed. The polymer mixture includes polyvinylidene fluoride-based polymer and at least one polymer selected from the group consisting of polyacrylonitrile and polymethyl methacrylate. Polyvinylidene fluoride-based polymer which has a good mechanical strength, polymethyl methacrylate polymer which has a good affinity and polyacrylonitrile polymer which has a good adhesiveness to electrodes are utilized. As a result, the mechanical strength and the adhesiveness to the electrodes of the polymer electrolyte can be improved to obtain a lithium secondary battery which has a stable charge/discharge characteristic and a high capacity.

    摘要翻译: 公开了一种聚合物电解质组合物及其制备方法以及使用其的锂二次电池。 聚合物电解质组合物包含聚合物混合物和其中公开了锂盐的溶剂。 聚合物混合物包括聚偏二氟乙烯基聚合物和至少一种选自聚丙烯腈和聚甲基丙烯酸甲酯的聚合物。 利用具有良好机械强度的聚偏二氟乙烯系聚合物,具有良好亲和性的聚甲基丙烯酸甲酯聚合物和对电极具有良好粘着性的聚丙烯腈聚合物。 结果,可以提高机械强度和对聚合物电解质的电极的粘附性,以获得具有稳定的充放电特性和高容量的锂二次电池。