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Full-Text Articles in Physical Sciences and Mathematics
Design And Performance Analysis Of A Relational Replicated Database Systems, Jon Gregory Hanson
Design And Performance Analysis Of A Relational Replicated Database Systems, Jon Gregory Hanson
Retrospective Theses and Dissertations
The hardware organization and software structure of a new database system are presented. This system, the relational replicated database system (RRDS), is based on a set of replicated processors operating on a partitioned database. Performance improvements and capacity growth can be obtained by adding more processors to the configuration. Based on designing goals a set of hardware and software design questions were developed. The system then evolved according to a five-phase process, based on simulation and analysis, which addressed and resolved the design questions. Strategies and algorithms were developed for data access, data placement, and directory management for the hardware …
The Slicing Extent Technique For Fast Ray Tracing, Sudhanshu Kumar Semwal
The Slicing Extent Technique For Fast Ray Tracing, Sudhanshu Kumar Semwal
Retrospective Theses and Dissertations
A new technique for image generation using ray tracing is introduced. The “Slicing Extent Technique” (SET) partitions object space with slicing planes perpendicular to all three axes. Planes are divided into two dimensional rectangular cells, which contain pointers to nearby objects. Cell size and the space between slices varies, and is determined by the objects’ locations and orientations. Unlike oct-tree and other space-partitioning methods, SET is not primarily concerned with dividing space into mutually exclusive volume elements (‘voxels’) and identifying objects within each voxel. Instead, SET is based on analysis of projections of objects onto slicing planes. In comparison to …