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Now showing items 31-40 of 40
The analysis of voltage and current unbalance by application of active and reactive power in the fundamental frequency negative-sequence components
(IEEE, 2012)
The behaviour of the fundamental frequency negative-sequence power components in unbalanced power networks is evaluated for possible information on the relative contribution by the supply and loading network. Previous ...
Cascade disruption of generation: the hidden gift of failure
(IEEE, 2012)
Large scale network disruption often lies at the heart of regional blackouts, and often disrupts entire communities in terms of their normal activities and well being. Recognizing the threat posed by such disturbances, ...
Block RAM implementation of a reconfigurable real-time PID controller
(IEEE, 2012)
Despite the numerous advantages reconfigurable computing adds to a system, it is only advantageous if the execution time exceeds the configuration time. As a result of the long configuration time, reconfiguration is only ...
A digital signature issuing and verification system for auto identification tokens
(IEEE, 2012)
The design of a Digital Signature Issuing and Verification System for Auto Identification Tokens is discussed. A system is proposed that is concerned with proving the validity of physical objects containing digital information ...
Genetic algorithm based PID tuning for optimal power control of a three-shaft Brayton cycle based power conversion unit
(Elsevier, 2012)
This paper considers the development of a PID control strategy to optimally control the power output of a High Temperature Gas-cooled Reactor (HTGR) power plant. A specific type of HTGR called the Pebble Bed Modular Reactor ...
The practical comparison of conductor operating temperatures against IEEE and CIGRE ampacity calculations
(IEEE, 2012)
The maximum operating temperatures of energized conductors denotes the current carrying capacity. Historically, power utilities have used deterministic and probabilistic methods to calculate the thermal rating and operating ...
Response Surface Modeling and Optimization to Elucidate the Differential Effects of Demographic Characteristics on HIV Prevalence in South Africa
(Southern Arican Institute for industrial engineering (SAIIE), 2012)
In this study, a Central Composite Face Centered (CCF) design was employed to study the individual and interaction effects of demographic characteristics on the spread of HIV in South Africa. The demographic characteristics ...
Tone realisation in a Yorùbá speech recognition corpus
(SLTU, 2012)
We investigate the acoustic realisation of tone in short continuous utterances in Yorùbá. Fundamental frequency (F0) contours are extracted for automatically aligned syllables from a speech corpus of 33 speakers collected ...
The effect of different magnetospheric structures on predictions of gamma-ray pulsar light curves
(South African Institute of Physics, 2012)
The second pulsar catalogue of the Fermi Large Area Telescope (LAT) will contain in excess of 100 gamma-ray pulsars. The light curves (LCs) of these pulsars exhibit a variety of shapes, and also different relative phase ...