摘要:
In one embodiment the present invention includes a system for securing and authorizing access to multidimensional transactional data. The system includes online analytical processing (OLAP) system and a database system. The OLAP system accesses a selection of multidimensional transactional data from the database system according to a multidimensional request. The OLAP system aggregates the selection to form aggregated information. The OLAP system filters the selection according to the authorization for the user, to form a filtered selection. In this manner the user can see accurate aggregations yet not see unauthorized data.
摘要:
A method for preparing 2-chloroethylsilanes which comprises reacting a vinylchlorosilane with hydrogen chloride in the presence of a catalyst consisting of at least one organoaluminum compound, or the product obtained from the in situ reaction of such an aluminum compound with at least one of the reactants. The catalyst may first be deactivated, if desired, by the addition of a liquid organopolysiloxane to the reaction mixture, prior to the distillation of the 2-chloroethylsilane.
摘要:
This invention relates to an improved process for preparing acyloxysilanes and acyloxysiloxanes which comprises conducting an aliphatic carboxylic acid in vapor form upwards from the bottom of a column countercurrent to the flow of a chlorosilane in which the carboxylic acid is introduced into the column at such a rate that the carboxylic acid does not exceed about 1.3 mol per gram atom of Si-bonded chlorine in the column while removing the acyloxysilane from the bottom of the column.The acyloxysiloxanes are prepared by conducting an aliphatic carboxylic acid upwards from the bottom of a column in vapor form countercurrent to the flow of a chlorosilane while introducing up to about 10 percent by weight of water based on the weight of the carboxylic acid into the column and removing the acyloxysiloxane from the bottom of the column.
摘要:
Systems and methods consistent with the invention may include receiving an indication that a software error was detected during operation of the application program, generating an error message based on the software error, the error message including an error signature, comparing the error signature with information stored in a patch library database to identify a corresponding correction patch, and correcting, when the corresponding correction patch is identified, the software error by applying the corresponding correction patch.
摘要:
In one embodiment the present invention includes a method comprising receiving a data filter for filtering a collection of data, wherein the collection of data is configured as a star schema including a fact table and dimension tables. The data filter is applied against the dimension tables to generate a modified dimension table. The modified dimension tables are applied against the fact table to produce a modified fact table. The data filter is then applied against the modified fact table to generate a second modified fact table, which is the output of the process.
摘要:
A continuous process for preparing alkylamines comprises reacting continuous streams of ammonia and alkyl halide in a molar ratio of at least 10:1 in a pressure reactor. The ultimate reaction mixture has a temperature of >80° C., a pressure of >40 bar and an ammonium halide content of >1% by weight, and comprises two phases (A) a first phase comprising at least 75% by weight of the total amount of ammonium halide formed, and (B) a second phase comprising at least 80% by weight of the total amount of alkylamine formed. The first and second phases are separated, and an alkylamine product is recovered therefrom.
摘要:
This invention relates to the preparation of organosilicon compounds by the addition of a silicon compound containing Si-bonded hydrogen to a compound having an aliphatic multiple bond in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to compounds containing an aliphatic multiple bond. In this process the reactants and the catalyst are continuously introduced into a pipe-shaped reactor while the contents of the reactor, which are maintained in a liquid phase by the application of pressure are circulated in the reactor at a rate of at least 1,000 cm per minute and while the reaction mixture is continuously being removed from the reactor.
摘要:
Various embodiments of systems and methods for analyzing software-usage information are described herein. Traffic numbers are obtained from data stored in a database using measurement objects that are associated with one or more keys. The measurement objects output the traffic numbers and the one or more keys are related to elements of the data. Identifiers and categories are assigned to the measurement objects. The categories represent attributes of a software product. A data structure comprising the identifiers, the traffic numbers, and the categories is generated and stored. The stored data structure and a header comprising one or more fields are used to generate a report.
摘要:
A compound of formula (I): (I) wherein X represents O or S; R1 represents C1-6 alkyl, C3-8 cycloalkyl, C3-8 cycloalkylmethyl or C3-8 cycloalkenyl any of which optionally may be substituted by one or more methyl groups or halogen atoms or R1 represents aryl, substituted aryl, heteroaryl or substituted heteroaryl; R2 represents hydrogen, methyl, which may be in either the α or β configuration, or methylene; R3 and R4 are the same or different and each independently represents hydrogen, halogen or a methyl group; and represents a single or a double bond; or a physiologically acceptable salt or solvate thereof.
摘要翻译:式(I)的化合物:(I)其中X表示O或S; R 1表示C 1-6烷基,C 3-8环烷基,C 3-8环烷基甲基或C 3-8环烯基,其任选可以被一个或多个甲基或卤素原子取代,或者R 1表示芳基,取代的芳基,杂芳基或取代的杂芳基; R 2表示氢,甲基,其可以是α或β构型,或亚甲基; R3和R4相同或不同,各自独立地表示氢,卤素或甲基; 并代表单键或双键; 或其生理上可接受的盐或溶剂合物。
摘要:
A method of managing user access to data includes detecting that a user seeks access to a data portion that belongs to a specified category. One or more authorizations are evaluated, each authorization having an authorization segment corresponding to the specified category. The method includes permitting the sought access to the data portion if at least one of the authorization segments corresponding to the specified category identifies the data portion to which access is sought. The method may permit access to data that falls within a union of granted authorizations. An authorization segment may correspond to a data dimension or to a meta dimension, such as an authorized action or data source, that does not directly relate to a data dimension.