公开(公告)号：US20070168550A1

公开(公告)日：2007-07-19

申请号：US11702856

申请日：2007-02-06

申请人： Yi-Min Wang ,  Lili Qiu ,  Chad Verbowski ,  Demetrios Achlioptas ,  Gautam Das ,  Per-Ake Larson

发明人： Yi-Min Wang ,  Lili Qiu ,  Chad Verbowski ,  Demetrios Achlioptas ,  Gautam Das ,  Per-Ake Larson

IPC分类号： G06F15/173

CPC分类号： H04L29/06 ,  H04L12/1859 ,  H04L67/327 ,  H04L69/329

摘要： A system arid method for enabling highly scalable multi-node event distribution networks through the use of summary-based routing, particularly event distribution networks using a content-based publish/subscribe model to distribute information. By allowing event routers to use imprecise summaries of the subscriptions hosted by matcher nodes, an event router can eliminate itself as a bottleneck thus improving overall event distribution network throughput even though the use of imprecise summaries results in some false positive event traffic. False positive event traffic is reduced by using a filter set partitioning that provides for good subscription set locality at each matcher node, while at the same time avoiding overloading any one matcher node. Good subscription set locality is maintained by routing new subscriptions to a matcher node with a subscription summary that best covers the new subscription. Where event space partitioning is desirable, an over-partitioning scheme is described that enables load balancing without repartitioning.

摘要翻译： 一种用于通过使用基于摘要的路由，特别是使用基于内容的发布/订阅模型来分发信息的事件分发网络来实现高度可扩展的多节点事件分发网络的系统和方法。 通过允许事件路由器使用由匹配器节点托管的订阅的不精确的摘要，事件路由器可以将自身消除为瓶颈，从而改善整体事件分发网络吞吐量，即使使用不精确的摘要导致一些假阳性事件流量。 通过使用在每个匹配器节点处提供良好订阅集位置的过滤器集分割来减少假正事件流量，同时避免任何一个匹配器节点的过载。 通过将新的订阅路由到具有最佳覆盖新订阅的订阅摘要的匹配器节点来维护良好的订阅集位置。 在需要事件空间分区的情况下，描述了能够进行负载均衡而不进行重新分区的过分配方案。

公开(公告)号：US07200675B2

公开(公告)日：2007-04-03

申请号：US10389623

申请日：2003-03-14

申请人： Yi-Min Wang ,  Lili Qiu ,  Chad E. Verbowski ,  Demetrios Achlioptas ,  Gautam Das ,  Per-Ake Larson

发明人： Yi-Min Wang ,  Lili Qiu ,  Chad E. Verbowski ,  Demetrios Achlioptas ,  Gautam Das ,  Per-Ake Larson

IPC分类号： G06F15/173 ,  G06F15/16

CPC分类号： H04L29/06 ,  H04L12/1859 ,  H04L67/327 ,  H04L69/329

摘要： A system and method for enabling highly scalable multi-node event distribution networks through the use of summary-based routing, particularly event distribution networks using a content-based publish/subscribe model to distribute information. By allowing event routers to use imprecise summaries of the subscriptions hosted by matcher nodes, an event router can eliminate itself as a bottleneck thus improving overall event distribution network throughput even though the use of imprecise summaries results in some false positive event traffic. False positive event traffic is reduced by using a filter set partitioning that provides for good subscription set locality at each matcher node, while at the same time avoiding overloading any one matcher node. Good subscription set locality is maintained by routing new subscriptions to a matcher node with a subscription summary that best covers the new subscription. Where event space partitioning is desirable, an over-partitioning scheme is described that enables load balancing without repartitioning.

摘要翻译： 一种通过使用基于摘要的路由，特别是使用基于内容的发布/订阅模型来分发信息的事件分发网络来实现高度可扩展的多节点事件分发网络的系统和方法。 通过允许事件路由器使用由匹配器节点托管的订阅的不精确的摘要，事件路由器可以将自身消除为瓶颈，从而改善整体事件分发网络吞吐量，即使使用不精确的摘要导致一些假阳性事件流量。 通过使用在每个匹配器节点处提供良好订阅集位置的过滤器集分割来减少假正事件流量，同时避免任何一个匹配器节点的过载。 通过将新的订阅路由到具有最佳覆盖新订阅的订阅摘要的匹配器节点来维护良好的订阅集位置。 在需要事件空间分区的情况下，描述了能够进行负载均衡而不进行重新分区的过分配方案。

公开(公告)号：US06565740B2

公开(公告)日：2003-05-20

申请号：US09817758

申请日：2001-03-26

申请人： Bir Sain ,  Som Nath Puri ,  Gautam Das ,  Bhagwati Prasad Balodi ,  Sunil Kumar ,  Anil Kumar ,  Virendra Kumar Kapoor ,  Virendra Kumar Bhatia ,  Turuga Sundara Rama Prasada Rao ,  Gur Pratap Rai

发明人： Bir Sain ,  Som Nath Puri ,  Gautam Das ,  Bhagwati Prasad Balodi ,  Sunil Kumar ,  Anil Kumar ,  Virendra Kumar Kapoor ,  Virendra Kumar Bhatia ,  Turuga Sundara Rama Prasada Rao ,  Gur Pratap Rai

IPC分类号： C10G1900

CPC分类号： C10L3/12 ,  C10G19/02 ,  C10G19/08 ,  C10G21/06

摘要： The present invention related to a process for sweetening of LPG light petroleum distillates by liquid liquid extraction using metal phtalocyanine sulphonamide catalyst which comprises extracting the mercaptanes contain in LPG, light petroleum distillate like pentanes, light straight run naphtha by liquid-liquid extraction using an aqueous or alcoholic solution of alkali metal hydroxide of concentration ranging between 1 wt % to 50 wt % in the presence of a metal phthalocyanine sulphonamide catalyst in the concentration ranging from 5-4000 ppmw, at a temperature ranging from 10° C. to 80° C. at a pressure ranging from 1 kg/cm2-50 kg/cm2 in a continuous or batch manner, converting the mercaptanes present in above said extract into corresponding disulphides by passing air, oxygen or any oxygen containing gas at the above same temperature and pressure, regenerating the alkali solution containing catalyst for recycling by separating the upper layer of disulphides from said alkali solution of catalyst.

摘要翻译： 本发明涉及一种使用金属酞菁磺酰胺催化剂液液萃取对LPG轻质石油馏分进行甜化的方法，该方法包括萃取LPG中含有的硫醇，轻质石油馏分如戊烷，轻度直馏石脑油，采用液 - 液萃取法， 或在金属酞菁磺酰胺催化剂存在下浓度范围为1〜50wt％的碱金属氢氧化物的醇溶液，浓度范围为5-4000ppmw，温度范围为10℃〜80℃ 在1kg / cm2-50kg / cm2的连续或间歇压力下，通过在上述相同温度和压力下通过空气，氧气或任何含氧气体将上述萃取物中存在的硫醇转化成相应的二硫化物 通过从上述碱溶液中分离上层二硫化物，再生含碱溶液的再循环催化剂 n催化剂。

公开(公告)号：US09244975B2

公开(公告)日：2016-01-26

申请号：US13328810

申请日：2011-12-16

申请人： Gautam Das ,  Hao H. Huang ,  Sandor Szalay ,  Nan Zhang

发明人： Gautam Das ,  Hao H. Huang ,  Sandor Szalay ,  Nan Zhang

IPC分类号： G06F17/30

CPC分类号： G06F17/30442

摘要： As file systems reach the petabytes scale, users and administrators are increasingly interested in acquiring high-level analytical information for file management and analysis. Two particularly important tasks are the processing of aggregate and top-k queries which, unfortunately, cannot be quickly answered by hierarchical file systems such as ext3 and NTFS. Existing pre-processing based solutions, e.g., file system crawling and index building, consume a significant amount of time and space (for generating and maintaining the indexes) which in many cases cannot be justified by the infrequent usage of such solutions. User interests can often be sufficiently satisfied by approximate (i.e., statistically accurate) answers. A just-in-time sampling-based system can, after consuming a small number of disk accesses, produce extremely accurate answers for a broad class of aggregate and top-k queries over a file system without the requirement of any prior knowledge. The system is efficient, accurate and scalable.

摘要翻译： 随着文件系统达到PB级，用户和管理员越来越有兴趣获取用于文件管理和分析的高级分析信息。 两个特别重要的任务是处理聚合和top-k查询，不幸的是不能通过分层文件系统（如ext3和NTFS）快速回答。 现有的基于预处理的解决方案，例如文件系统爬行和索引构建，消耗了大量的时间和空间（用于生成和维护索引），这在许多情况下不能被这种解决方案的频繁使用所证明。 用户兴趣通常可以通过近似（即统计准确的）答案来充分满足。 基于时间抽样的系统可以在消耗少量磁盘访问后，通过文件系统为广泛的聚合和顶级查询提供非常准确的答案，而无需任何先前的知识。 该系统是高效，准确和可扩展的。

公开(公告)号：US20090248619A1

公开(公告)日：2009-10-01

申请号：US12059350

申请日：2008-03-31

申请人： Gautam Das ,  Mukesh Kumar Mohania ,  Ullas Balan Nambiar

发明人： Gautam Das ,  Mukesh Kumar Mohania ,  Ullas Balan Nambiar

IPC分类号： G06F17/30

CPC分类号： G06F17/30545

摘要： Methods, systems and computer products perform cost estimate to determine an efficient approach to answer a query according to one of several unified query plans. One unified query plan involves querying an unstructured database, referencing a unified index, and probing a structured database based on matches discovered in the unified index. The results of the unstructured database query are used to lookup entries in a unified index associated with the structured database. Then the structured database is probed by querying only the subset of the structured database gleaned from the unstructured database query.

摘要翻译： 方法，系统和计算机产品执行成本估算，以确定根据多个统一查询计划之一回答查询的有效方法。 一个统一的查询计划涉及查询非结构化数据库，引用统一索引，并根据统一索引中发现的匹配来探测结构化数据库。 非结构化数据库查询的结果用于查找与结构化数据库相关联的统一索引中的条目。 然后通过仅查询从非结构化数据库查询中收集的结构化数据库的子集来探测结构化数据库。

公开(公告)号：US06755964B1

公开(公告)日：2004-06-29

申请号：US09804993

申请日：2001-03-13

申请人： Brij Bahadur Agrawal ,  Som Nath Puri ,  Gautam Das ,  Bir Sain ,  Bhagwati Prasad Balodi ,  Sunil Kumar ,  Anil Kumar ,  Pushpa Gupta ,  Jai Prakash ,  Onkar Singh Tyagi ,  Turuga Sundara Rama Prasada Rao ,  Gur Pratap Rai

发明人： Brij Bahadur Agrawal ,  Som Nath Puri ,  Gautam Das ,  Bir Sain ,  Bhagwati Prasad Balodi ,  Sunil Kumar ,  Anil Kumar ,  Pushpa Gupta ,  Jai Prakash ,  Onkar Singh Tyagi ,  Turuga Sundara Rama Prasada Rao ,  Gur Pratap Rai

IPC分类号： C10G1900

CPC分类号： C10G27/10

摘要： A process for fixed bed sweetening of petroleum distillates using halogenating metal phthalocyanine as a catalyst comprising impregnating the catalyst on activated charcoal bed by circulating alcoholic alkaline solution of the catalyst through charcoal bed till colorless bed solution is obtained in the effluent, passing the petroleum distillate through the said catalyst loaded charcoal bed along with air or oxygen at a temperature and pressure with liquid hourly space velocity with continuous or intermittent injection of alkali solution such as sodium hydroxide of concentration to obtain the desired low mercaptan level petroleum distillates. The alkaline solution used is selected from methanolic and ethanolic solution of sodium hydroxide. The halogenated metal phthalocyanine catalyst used is selected from dichloro cobalt phthalocyanine and dibromo cobalt phthalocyanine. The petroleum fraction used is selected from diesel, kerosene and FCC gasoline.

摘要翻译： 一种使用卤化金属酞菁作为催化剂的石油馏分的固定床脱色方法，包括通过将催化剂的醇碱性溶液循环通过木炭床将催化剂浸渍在活性炭床上，直到在流出物中得到无色的床溶液，使石油馏出物通过 所述催化剂负载的活性炭床与空气或氧气一起在温度和压力下具有液时空速，连续或间歇地注入浓度如氢氧化钠的碱溶液以获得所需的低硫醇水平的石油馏分。 使用的碱性溶液选自氢氧化钠的甲醇和乙醇溶液。 所用的卤化金属酞菁催化剂选自二氯钴酞菁和二溴钴酞菁。 所使用的石油馏分选自柴油，煤油和FCC汽油。

公开(公告)号：US06696381B2

公开(公告)日：2004-02-24

申请号：US09804985

申请日：2001-03-13

申请人： Brij Bahadur Agrawal ,  Som Nath Puri ,  Gautam Das ,  Bir Sain ,  Bhagwati Prasad Balodi ,  Sunil Kumar ,  Anil Kumar ,  Pushpa Gupta ,  Jai Prakash ,  Onkar Singh Tyagi ,  Turuga Sundara Rama Prasada Rao ,  Gur Pratap Rai

发明人： Brij Bahadur Agrawal ,  Som Nath Puri ,  Gautam Das ,  Bir Sain ,  Bhagwati Prasad Balodi ,  Sunil Kumar ,  Anil Kumar ,  Pushpa Gupta ,  Jai Prakash ,  Onkar Singh Tyagi ,  Turuga Sundara Rama Prasada Rao ,  Gur Pratap Rai

IPC分类号： C07D48722

CPC分类号： C10G27/10 ,  B01J31/183 ,  B01J2531/025 ,  B01J2531/72 ,  B01J2531/842 ,  B01J2531/845 ,  B01J2531/847

摘要： A process for the preparation of a supported catalyst comprising a Halogenated Phthalocyanine of cobalt, iron or manganese of formula 1 which comprises: mixing a phthalocyanine of cobalt, iron or manganese with a halogenating agent in a stoichiometric ratio ranging between 1:1 to 1:20 optionally in an inert organic solvent, refluxing or heating and stirring for a time period ranging between 1-6 hrs, distilling the excess halogenating agent from the mixture, filtering and washing the residual mass by known method to obtain the desired halogenated phthalocyanine and impregnating a support material with the desired halogenated phthalocyanine.

摘要翻译： 一种制备载体催化剂的方法，其包括式1的钴，铁或锰的卤代酞菁，其包括：将化学计量比为1：1至1:20的钴，铁或锰的酞菁与卤化剂混合 任选地在惰性有机溶剂中，回流或加热和搅拌1-6小时的时间，从混合物中蒸馏出过量的卤化剂，通过已知方法过滤和洗涤残余物质，得到所需的卤代酞菁并浸渍 支持材料与所需的卤代酞菁。

公开(公告)号：US20120166478A1

公开(公告)日：2012-06-28

申请号：US13328810

申请日：2011-12-16

申请人： Gautam DAS ,  Hao H. HUANG ,  Sandor SZALAY ,  Nan ZHANG

发明人： Gautam DAS ,  Hao H. HUANG ,  Sandor SZALAY ,  Nan ZHANG

IPC分类号： G06F17/30

CPC分类号： G06F17/30442

摘要： As file systems reach the petabytes scale, users and administrators are increasingly interested in acquiring high-level analytical information for file management and analysis. Two particularly important tasks are the processing of aggregate and top-k queries which, unfortunately, cannot be quickly answered by hierarchical file systems such as ext3 and NTFS. Existing pre-processing based solutions, e.g., file system crawling and index building, consume a significant amount of time and space (for generating and maintaining the indexes) which in many cases cannot be justified by the infrequent usage of such solutions. User interests can often be sufficiently satisfied by approximate (i.e., statistically accurate) answers. A just-in-time sampling-based system can, after consuming a small number of disk accesses, produce extremely accurate answers for a broad class of aggregate and top-k queries over a file system without the requirement of any prior knowledge. The system is efficient, accurate and scalable.

摘要翻译： 随着文件系统达到PB级，用户和管理员越来越有兴趣获取用于文件管理和分析的高级分析信息。 两个特别重要的任务是处理聚合和top-k查询，不幸的是不能通过分层文件系统（如ext3和NTFS）快速回答。 现有的基于预处理的解决方案，例如文件系统爬行和索引构建，消耗了大量的时间和空间（用于生成和维护索引），这在许多情况下不能被这种解决方案的频繁使用所证明。 用户兴趣通常可以通过近似（即统计准确的）答案来充分满足。 基于时间抽样的系统可以在消耗少量磁盘访问后，通过文件系统为广泛的聚合和顶级查询提供非常准确的答案，而无需任何先前的知识。 该系统是高效，准确和可扩展的。

公开(公告)号：US09244976B1

公开(公告)日：2016-01-26

申请号：US13402764

申请日：2012-02-22

申请人： Nan Zhang ,  Gautam Das

发明人： Nan Zhang ,  Gautam Das

IPC分类号： G06F17/30

CPC分类号： G06F17/30442

摘要： A just-in-time sampling-based system can, after consuming a small number of disk accesses or queries, produce extremely accurate answers for a broad class of aggregate and top-k queries over a file system or database without the requirement of prior knowledge. The system is efficient, accurate, and scalable. The system performs aggregate estimations of a hidden database through its web interface by employing techniques that use a small number of queries to produce unbiased estimates with small variance. It conducts domain discovery over a hidden database through its web interface by employing techniques which provide effective guarantees on the effectiveness of domain discovery. Systems and methods enhance forms used by mobile devices to access hidden databases. It employs data analytics to improve the usage of form fields, including providing context-sensitive auto-completion suggestions, highlighting selections in drop-down boxes and eliminating suggestions in drop-down boxes.

摘要翻译： 基于时间抽样的系统可以在消耗少量磁盘访问或查询后，通过文件系统或数据库为广泛类型的聚合和顶级查询提供非常准确的答案，而无需事先知识 。 该系统是高效，准确和可扩展的。 系统通过使用少量查询的技术来生成具有小差异的无偏估计，通过其Web界面执行隐藏数据库的总体估计。 它通过其Web界面通过隐藏的数据库进行域发现，采用技术为域发现的有效性提供有效的保证。 系统和方法增强了移动设备访问隐藏数据库所使用的形式。 它采用数据分析来改进表单域的使用，包括提供上下文相关的自动完成建议，在下拉框中突出显示选择，并在下拉框中删除建议。

公开(公告)号：US20050289102A1

公开(公告)日：2005-12-29

申请号：US10879450

申请日：2004-06-29

申请人： Gautam Das ,  Surajit Chaudhuri ,  Vagelis Hristidis ,  Gerhard Weikum

发明人： Gautam Das ,  Surajit Chaudhuri ,  Vagelis Hristidis ,  Gerhard Weikum

IPC分类号： G06F7/00 ,  G06Q30/00 ,  G06Q50/00

CPC分类号： G06Q30/0603 ,  G06Q50/16 ,  Y10S707/99937

摘要： A system and methods rank results of database queries. An automated approach for ranking database query results is disclosed that leverages data and workload statistics and associations. Ranking functions are based upon the principles of probabilistic models from Information Retrieval that are adapted for structured data. The ranking functions are encoded into an intermediate knowledge representation layer. The system is generic, as the ranking functions can be further customized for different applications. Benefits of the disclosed system and methods include the use of adapted probabilistic information retrieval (PIR) techniques that leverage relational/structured data, such as columns, to provide natural groupings of data values. This permits the inference and use of pair-wise associations between data values across columns, which are usually not possible with text data.

摘要翻译： 系统和方法对数据库查询的结果进行排序。 披露了一种用于排名数据库查询结果的自动化方法，它利用数据和工作量统计信息和关联。 排名函数基于适用于结构化数据的信息检索的概率模型的原理。 排序函数被编码为中间知识表示层。 该系统是通用的，因为排序功能可以针对不同的应用进一步定制。 所公开的系统和方法的优点包括使用适应的概率信息检索（PIR）技术来利用诸如列的关系/结构化数据来提供数据值的自然分组。 这允许推断和使用跨列之间的数据值之间的成对关联，这通常不可能与文本数据。