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公开(公告)号：US20140344263A1
公开(公告)日：2014-11-20
申请号：US13136505
申请日：2011-08-01
IPC分类号： G06F17/30
CPC分类号： G06F16/3338
摘要： Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving a search query that includes a query term from a client device; obtaining first search results for the search query; identifying a candidate expansion of the query term in text associated with the first search results; revising the search query to include the candidate expansion of the query term; and obtaining second search results for the revised search query.
摘要翻译： 方法，系统和装置，包括在计算机存储介质上编码的计算机程序，用于从客户端装置接收包括查询项的搜索查询; 获取搜索查询的第一搜索结果; 识别与第一搜索结果相关联的文本中的查询词的候选扩展; 修改搜索查询以包括查询项的候选扩展; 并获得修改的搜索查询的第二搜索结果。
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公开(公告)号：US20090144220A1
公开(公告)日：2009-06-04
申请号：US11948236
申请日：2007-11-30
申请人： Andrew A. Feng , Michael Bigby , Bryan Call , Brian F. Cooper , Daniel Weaver
发明人： Andrew A. Feng , Michael Bigby , Bryan Call , Brian F. Cooper , Daniel Weaver
IPC分类号： G06F17/30
CPC分类号： G06F16/2255
摘要： A system for storing a distributed hash table. The system includes a storage unit, a tablet controller, a router, and a transaction bank. The storage unit has a plurality of tablets forming a hash table and each of the tablets includes multiple records. The tablet controller maintains a relationship between each tablet and the storage unit. The router hashes a record's key to determine the tablet associated with each record. Further, the router distributes messages from clients to the storage units based on the tablet-storage unit relationship thereby serving as a layer of indirection. The transaction bank propagates updates made in one record to all other replicas of the record.
摘要翻译： 一种用于存储分布式哈希表的系统。 该系统包括存储单元，平板电脑控制器，路由器和交易银行。 存储单元具有形成散列表的多个片，并且每个片包括多个记录。 平板电脑控制器维持每个平板电脑和存储单元之间的关系。 路由器散列记录的密钥以确定与每个记录相关联的平板电脑。 此外，路由器基于平板电脑存储单元关系将消息从客户端分发到存储单元，从而用作间接层。 交易银行将一条记录中的更新传播到记录的所有其他副本。
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公开(公告)号：US20110225120A1
公开(公告)日：2011-09-15
申请号：US12722093
申请日：2010-03-11
IPC分类号： G06F17/30
CPC分类号： G06F16/273
摘要： A system and method for maintaining a database with a plurality of replicas that are geographically distributed. A plurality of tables are stored in a first replica, each table including a plurality of records. The system identifying if the record is a stub and requesting a lease from a second replica designated as master for the record if the record is a stub. The system receiving a copy of the record from the second replica and storing data fields of the record in the first replica after receiving the lease.
摘要翻译： 一种用于维护具有地理分布的多个副本的数据库的系统和方法。 多个表存储在第一副本中，每个表包括多个记录。 如果记录是存根，则系统识别记录是否为存根，并从被指定为记录的主数据的第二副本请求租赁。 该系统从第二副本接收记录的副本，并且在接收到租约之后将该记录的数据字段存储在第一副本中。
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公开(公告)号：US20090144333A1
公开(公告)日：2009-06-04
申请号：US11948262
申请日：2007-11-30
申请人： Andrew A. Feng , Michael Bigby , Bryan Call , Brian F. Cooper , Daniel Weaver
发明人： Andrew A. Feng , Michael Bigby , Bryan Call , Brian F. Cooper , Daniel Weaver
IPC分类号： G06F17/30
CPC分类号： G06F16/21
摘要： A system for maintaining a database. The system includes a storage unit for storing many tablets each tablet including multiple records. The tablet controller is configured to maintain the relationship between the tablet and the storage unit. The tablet controller tracks failures to access the storage unit and designates a new storage unit for each tablet based on a storage unit failure. A router is in communication with the tablet controller and configured to distribute messages from clients to the storage units thereby serving as a layer of indirection.
摘要翻译： 用于维护数据库的系统。 该系统包括用于存储包括多个记录的每个平板电脑的许多片的存储单元。 平板电脑控制器被配置为维持平板电脑和存储单元之间的关系。 平板电脑控制器跟踪访问存储单元的故障，并根据存储单元故障为每个平板电脑指定一个新的存储单元。 路由器与平板电脑控制器通信，并被配置为将消息从客户端分发到存储单元，从而用作间接层。
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公开(公告)号：US4658181A
公开(公告)日：1987-04-14
申请号：US658790
申请日：1984-10-09
申请人： Brian F. Cooper , Maurice Esterson
发明人： Brian F. Cooper , Maurice Esterson
CPC分类号： H01J23/04
摘要： The invention provides a travelling wave tube having a directly heated cathode. Cathode material is applied in a depression in one U-shaped member of a high resistance alloy material and the return path for heater current is provided by another U-shaped strip member beneath the first. The configurations of the two strip members are similar so that stray magnetic fields generated by the equal but opposite currents flowing therein, tend to neutralize one another. In another embodiment the two strip members are replaced by generally cylindrical members, one member being within the other. The surface of the member providing the return path for heater current is polished where it faces the member carrying the cathode material so as to reflect back heat radiated by the last-mentioned member.
摘要翻译： 本发明提供一种具有直接加热的阴极的行波管。 阴极材料被施加在高电阻合金材料的一个U形构件的凹陷中，并且用于加热器电流的返回路径由第一个下面的另一个U形条形构件提供。 两个条状构件的构造相似，使得由流过其中相等但相反的电流产生的杂散磁场倾向于彼此中和。 在另一个实施例中，两个条形构件被大体上圆柱形的构件代替，一个构件位于另一个内。 在提供用于加热器电流的返回路径的构件的表面被抛光，其面对携带阴极材料的构件，以便反射由最后提到的构件辐射的回热。
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6.发明申请SYSTEM FOR PROVIDING SCALABLE IN-MEMORY CACHING FOR A DISTRIBUTED DATABASE 审中-公开为分布式数据库提供可扩展内存缓存的系统公开(公告)号：US20100174863A1
公开(公告)日：2010-07-08
申请号：US12724260
申请日：2010-03-15
CPC分类号： G06F16/27
摘要： A system is described for providing scalable in-memory caching for a distributed database. The system may include a cache, an interface, a non-volatile memory and a processor. The cache may store a cached copy of data items stored in the non-volatile memory. The interface may communicate with devices and a replication server. The non-volatile memory may store the data items. The processor may receive an update to a data item from a device to be applied to the non-volatile memory. The processor may apply the update to the cache. The processor may generate an acknowledgement indicating that the update was applied to the non-volatile memory and may communicate the acknowledgment to the device. The processor may then communicate the update to a replication server. The processor may apply the update to the non-volatile memory upon receiving an indication that the update was stored by the replication server.
摘要翻译： 描述了一种用于为分布式数据库提供可扩展的内存中缓存的系统。 该系统可以包括高速缓存，接口，非易失性存储器和处理器。 高速缓存可以存储存储在非易失性存储器中的数据项的缓存副本。 该接口可以与设备和复制服务器进行通信。 非易失性存储器可以存储数据项。 处理器可以从要应用于非易失性存储器的设备接收对数据项的更新。 处理器可以将更新应用于高速缓存。 处理器可以产生指示更新被应用于非易失性存储器并且可以将确认传送到设备的确认。 处理器然后可以将该更新传送到复制服务器。 当接收到由复制服务器存储更新的指示时，处理器可以将更新应用于非易失性存储器。
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7.发明申请公开(公告)号：US20090144338A1
公开(公告)日：2009-06-04
申请号：US11948221
申请日：2007-11-30
申请人： Andrew A. Feng , Michael Bigby , Bryan Call , Brian F. Cooper , Daniel Weaver
发明人： Andrew A. Feng , Michael Bigby , Bryan Call , Brian F. Cooper , Daniel Weaver
CPC分类号： G06F16/273
摘要： A system for a distributed database implementing a dynamic mastership strategy. The system includes a multiple data centers, each having a storage unit to store a set of records. Each data center stores its own replica of the set of records and each record includes a field that indicates which data center is assigned to be the master for that record. Since each of the data centers can he geographically distributed, one record may be more efficiently edited with the master being one geographic region while another record, possibly belonging to a different user, may be more efficiently edited with the master being located in another geographic region.
摘要翻译： 用于分布式数据库的系统，用于实现动态管理策略。 该系统包括多个数据中心，每个数据中心具有存储单元以存储一组记录。 每个数据中心存储其自己的记录集合的副本，并且每个记录包括指示哪个数据中心被分配为该记录的主数据的字段。 由于每个数据中心都可以在地理上分布，所以主机可以更有效地编辑一个记录，主机是一个地理区域，而可能属于不同用户的另一个记录可以被更有效地编辑，主机位于另一个地理区域 。
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公开(公告)号：US4598465A
公开(公告)日：1986-07-08
申请号：US539146
申请日：1983-10-05
申请人： Brian F. Cooper , David H. Cottey
发明人： Brian F. Cooper , David H. Cottey
CPC分类号： H01J23/24 , B23P13/02 , Y10T29/49016 , Y10T29/49895
摘要： A millimeter coupled cavity travelling wave tube has its slow wave structures formed by a hobbing process. In a preferred construction, each slow wave structure is made of two individual halves each extending for the length of the structure. Each half contains one half of each cavity and one half of each beam hole and all of the portions of cavity and portions of beam hole in each half are formed in one hobbing operating. Coupling holes between cavities are formed where required by a process (e.g. spark erosion) separate from hobbing and if ferrules or drift tubes are required to extend out of the cavity separating walls in the finished tube, the beam coupling holes are made oversized and individual ferrules are brazed into position. The two halves of the slow wave structure are united by furnace brazing.
摘要翻译： 毫米耦合腔行波管具有由滚齿过程形成的慢波结构。 在优选的结构中，每个慢波结构由两个单独的半部构成，每个半部延伸结构的长度。 每个半部包含每个腔的一半和每个光束孔的一半，并且每个半部中的腔的所有部分和光束孔的部分在一个滚齿操作中形成。 在需要通过与滚齿分离的工艺（例如火花侵蚀）的情况下，形成腔之间的耦合孔，并且如果需要套管或漂移管从成品管中的腔分离壁延伸出来，则梁结合孔被制成尺寸过大的单独的套圈 被钎焊到位。 慢波结构的两半通过炉钎焊相结合。
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公开(公告)号：US20110225121A1
公开(公告)日：2011-09-15
申请号：US12722038
申请日：2010-03-11
IPC分类号： G06F17/30
CPC分类号： G06F16/273
摘要： A method and system for maintaining a database with a plurality of replicas that are geographically distributed. A plurality of tables are stored in the database, each table includes a plurality of records. The location where each record is stored being controlled based on a constraint property included in the record.
摘要翻译： 一种用于维护具有地理分布的多个副本的数据库的方法和系统。 多个表存储在数据库中，每个表包括多个记录。 基于记录中包含的约束属性来控制存储每个记录的位置。
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公开(公告)号：US4619041A
公开(公告)日：1986-10-28
申请号：US539147
申请日：1983-10-05
申请人： Peter R. Davis , Brian F. Cooper , David H. Cottey
发明人： Peter R. Davis , Brian F. Cooper , David H. Cottey
CPC分类号： H01J23/24 , B23P13/02 , Y10T29/49016
摘要： A millimeter coupled cavity travelling wave tube has each of its slow wave structures formed of at least one longitudinally extending member having holes made therethrough by a hobbing process, which holes constitute at least in part the cavities of the slow wave structure. In a preferred embodiment a one and one only such longitudinally extending member is provided, the holes therein each a whole cavity. The hobbing is such that a buttress is left outstanding from each cavity facing surface of a cavity separating wall and the beam hole is bored axially through said member from end to end through said buttresses. After machining of the cavity coupling holes in the cavity separating walls (e.g. by spark erosion) the cavities are closed by plates brazed to opposite faces of the member.
摘要翻译： 毫米耦合的腔行波管具有由至少一个纵向延伸构件形成的每个慢波结构，所述至少一个纵向延伸构件具有通过滚齿工艺穿过的孔，该孔至少部分地构成慢波结构的空腔。 在优选实施例中，仅设置一个和仅一个这样的纵向延伸部件，其中的每个孔都是整个空腔。 滚齿是这样一种支撑体从空腔分隔壁的面向空腔的表面留下的突出部分，并且梁孔通过所述支撑件从一端到另一端通过所述构件轴向钻孔。 在腔分离壁中的空腔耦合孔加工（例如通过火花腐蚀）之后，通过钎焊到构件的相对面的板来封闭空腔。
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