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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
An Experimental Study Into The Effect Of Varying The Join Selectivity Factor On The Performance Of Join Methods In Relational Databases, Ada Mallet
Theses : Honours
Relational database systems use join queries to retrieve data from two relations. Several join methods can be used to execute these queries. This study investigated the effect of varying join selectivity factors on the performance of the join methods. Experiments using the ORACLE environment were set up to measure the performance of three join methods: nested loop join, sort merge join and hash join. The performance was measured in terms of total elapsed time, CPU time and the number of I/O reads. The study found that the hash join performs better than the nested loop and the sort merge under …
Pathfinding In Vrml, Jason Richard Pearce
Pathfinding In Vrml, Jason Richard Pearce
Theses : Honours
Virtual Reality Modelling Language (VRML) is a scene description language which describes three dimensional (3D) space to a computer. Thus the three axis of space that is inherent in our dimension X Y and Z is represented inside a computer. To many people VRML represents a new beginning for the World Wide Web (WWW) because it behaves more like the real world. VRML is experimental, interactive, continuous and of course, three dimensional. Algorithms in computing have been designed for 2D problem solving and this does not necessarily translate to problem solving on a 3D level. The aim of this project …
Software Flexibility In A Web Environment, Michael Layng
Software Flexibility In A Web Environment, Michael Layng
Theses : Honours
Flexible software systems are designed to be able to adapt to changes in their environment without the need for programmer intervention. This allows companies and institutions to avoid the cost of hiring a programmer every time a business rule changes or a data structure is modified. The techniques of designing and implementing flexible 3GL software systems have been proven as a means of reducing the high cost of software maintenance caused by the changing of systems requirements. Such systems have been in operation in the European finance sector since the early 1980's. Edith Cowan University is participating in current research …
Good Software Development Processes Lead To Harmonious Project Teams Which In Turn Lead To Effective Project Performance, Rweyunga Kazaura
Good Software Development Processes Lead To Harmonious Project Teams Which In Turn Lead To Effective Project Performance, Rweyunga Kazaura
Theses : Honours
The modem world relies on computers in almost every facet of life. With the explosion of Information Technology, software development has become an important process. However, from the beginning, this process has suffered and continues to suffer from a number of problems. If these problems are not rectified, they can jeopardise projects and lead to project failure. Project failure results in a project being delivered: • without satisfying the functional and non-functional requirements requested by the user or customer • beyond the agreed schedule and/or • over budget. Research indicates that practising good software development processes (SDPs) can override these …
Vector Geometry And Applications To Three-Dimensional Computer Graphics, Rory Morrison
Vector Geometry And Applications To Three-Dimensional Computer Graphics, Rory Morrison
Theses : Honours
The mathematics behind algorithms involved in generating three-dimensional images on a computer has stemmed from the analysis of the processes of sight and vision. These processes have been modeled to provide methods of visualising three-dimensional data sets. The applications of such visualisations are varied. This project will study some of the mathematics that IS used in three-dimensional graphics applications