Earthquake catalogs are essential to analyze the evolution of active fault systems. The background seismicity rate, or rate earthquakes that not directly triggered by other earthquakes, relates stressing a crucial quantity for understanding seismic hazards. Determining is challenging because aftershock sequences may dominate rate. Classifying these events in earthquake catalogs—known as catalog...

I/O parallelism appears to be a promising approach to achieving high performance in parallel database systems. In such systems, it is essential to decluster database les into fragments and spread them across multiple disks so that the DBMS software can exploit the I/O bandwidth reading and writing the disks in parallel. In this paper, we consider the problem of declustering multidimensional dat...

The serial dependence of a stationary time series at extreme levels may be captured by the limiting cluster size distribution. New estimators based on blocks declustering scheme are proposed and analyzed both theoretically means large-scale simulation study. A sliding version is shown to outperform disjoint version. In contrast some competitors from literature, only depend one tuning parameter ...

In this paper, we consider the problem of exploiting I/O parallelism for efficient access to transaction-time temporal databases. As temporal databases maintain historical versions of records in addition to current ones, we consider range queries in both time dimension and key dimension. Multiple disks can be used to read sets of disk blocks in parallel, thereby improving the performance of suc...