Abstract:
Disclosed are a column-based data managing method and apparatus, and a column-based data searching method. The column-based data managing method includes determining whether the size of the column-group data file exceeds a partitioning threshold, dividing the column-group data if the size exceeds the partitioning threshold, and generating divided column-group data files.
Abstract:
Provided are a system and method for processing continuous integrated queries on both data stream and stored data using user-defined shared trigger. The system includes a data stream manager for managing data stream inputted from outside; a continuous integrated queries manager for managing the continuous integrated queries inputted from an external application; a trigger manager for managing the user-defined shared trigger inputted from the external application and registering the user-defined shared trigger in an external database; a trigger result manager for forming and managing a trigger result set from a performance result of the user-defined shared trigger registered in the cooperation database; and a continuous integrated queries performer for processing the continuous integrated queries referring to the transmitted data stream and trigger result set.
Abstract:
A method of forming an insulating layer of a semiconductor device, the method including preparing a semiconductor substrate having a plurality of structures and gaps between adjacent structures, forming an insulating layer for oxygen supply on the semiconductor substrate, forming an SOG (spin-on-glass) layer on the insulating layer for oxygen supply to fill the gaps, and curing the SOG layer, wherein the insulating layer for oxygen supply supplies oxygen to the SOG layer during curing of the SOG layer.
Abstract:
Provided are a system and a method for indexing high-dimensional data in parallel in a cluster environment. The system for indexing high-dimensional data in parallel in a cluster environment includes a Spill-tree creation means for creating a Spill-tree using an sampled N-dimensional feature vector, a feature vector division storage means for distributedly storing the N-dimensional feature vector in a terminal node of the Spill-tree, and a local signature creation means for creating and managing a local signature for the N-dimensional feature vector dispersed into each node of the Spill-tree.
Abstract:
There are provided a distributed video coding apparatus and method capable of controlling an encoding rate, the apparatus including: an intra-frame encoder encoding a key frame and outputting a bit stream of the encoded key frame; an encoder rate control (ERC) module calculating a bit rate according to motion complexity of a present Wyner-Ziv (WZ) frame by using a correlation between the motion complexity and the bit rate; and a turbo encoder encoding the present WZ frame by the bit rate calculated at the ERC module and outputting the encoded WZ bit stream.
Abstract:
A method and system for supporting an XQuery trigger in XML-DBMS based on relational DBMS is provided. In an Ubiquitous environment where XML data are incessantly generated by an enormous number of objects, so as to overcome inconvenience and its resultant reduction of performance in which a user should query after checking a change of XML-DBMS one by one, in XML-DBMS based on relational DBMS, the present invention supports an XQuery trigger technique based on SQL trigger automatically executing insert, update and delete statements, and a storage or external procedure related with the change of data when a change of data is generated at a specific table in a conventional relational DBMS.
Abstract:
Provided is a continuous query processing apparatus and method using operation sharable among multiple queries on an Extensible Markup Language (XML) data stream. The apparatus, includes: a storing unit for storing a sharable operation result; a syntactic analyzation unit for performing a syntactic analysis on the registered continuous query; a semantic analyzation unit for analyzing the meaning upon receiving a syntactic analysis result from the syntactic analyzation unit; a sharable operation extracting unit for extracting a sharable operation upon receiving a semantic analysis result from the semantic analyzation unit; and a query execution unit for storing the result of the extracted sharable operation in the storing unit and performing the continuous queries on an XML data stream based on the result of the semantic analysis and the result of the sharable operation stored in the storing unit.
Abstract:
Provided is a stream data processing system and method for avoiding duplication of data process. The system including: an evaluation result storing unit for updating and storing a query condition evaluation result; a window evaluating unit for performing window evaluation; a data separating unit for separating data into new data and duplication input data; a reuse result extracting unit for receiving duplication input data from the data separating unit and extracting a query condition evaluation result; a query condition evaluating unit for receiving new data from the data separating unit, performing query condition evaluation and creating a query condition evaluation result; and a result organizing unit for receiving the query condition evaluation result, merging, outputting and transmitting the query condition evaluation result to the evaluation result storing unit.
Abstract:
Disclosed are service providing method and device, including: collecting execution state information about a plurality of tasks that constitute at least one service, and are dynamically distributed and arranged over a plurality of nodes; and performing scheduling based on the collected execution state information about the plurality of tasks, wherein each of the plurality of tasks has at least one input source and output source, and a unit of data to be processed for each input source and a data processing operation are defined by a user, and the scheduling is to delete at least a portion of data input into at least one task or to process the at least a portion of input data in at least one duplicate task by referring to the defined unit of data. In particular, the present invention may effectively provide a service of analyzing and processing large stream data in semi-real time.
Abstract:
The present invention relates to a transparent thermoplastic resin composition which characteristically contains A) 20-80 weight % of graft copolymer composed of a) conjugated diene rubber latex; b) intermediate layer prepared by copolymerization of acrylic acid alkylester derivative and aromatic vinyl derivative with the above a); and c) graft layer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, a romatic vinyl derivative and vinyl cyan derivative with the above b) and B) 20-80 weight % of MSAN copolymer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, aromatic vinyl derivative and vinyl cyan derivative. The transparent thermoplastic resin composition of the present invention has enhanced transparency, impact strength, surface gloss, weather resistance and color by being prepared by the method of the invention which is characterized by the steps of forming an intermediate layer by adding acrylic rubber to polybutadiene rubber, grafting, and regulating refractive indices of each monomers of a copolymer.