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Full-Text Articles in Physical Sciences and Mathematics
Use Of A Weighted Matching Algorithm To Sequence Clusters In Spatial Join Processing, Husen Husen
Use Of A Weighted Matching Algorithm To Sequence Clusters In Spatial Join Processing, Husen Husen
Theses : Honours
One of the most expensive operations in a spatial database is spatial join processing. This study focuses on how to improve the performance of such processing. The main objective is to reduce the Input/Output (I/O) cost of the spatial join process by using a technique called cluster-scheduling. Generally, the spatial join is processed in two steps, namely filtering and refinement. The cluster-scheduling technique is performed after the filtering step and before the refinement step and is part of the housekeeping phase. The key point of this technique is to realise order wherein two consecutive clusters in the sequence have maximal …
An Investigation Of Methodologies For Software Development Prototyping, Susan M. Jones
An Investigation Of Methodologies For Software Development Prototyping, Susan M. Jones
Theses: Doctorates and Masters
The computer industry has a poor record of system development using the traditional life-cycle approach. The main cause of user dissatisfaction is the unacceptably large amount of time between specification and delivery of a system. In addition, users have limited opportunity to influence how the system will look when implemented once development has commenced. With the advent of 4GLs, system development using a prototyping approach has become a viable option. This has reduced the development tlme significantly and, together with the use of prototyping, has allowed users to become more involved in the development process. However, this change in the …