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Kaura Namoda, Nigeria

Umoh E.A.,Federal Polytechnic
Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications, PACT 2014 | Year: 2014

The YU-WANG autonomous chaotic system is a three-dimensional system that possesses a quadratic cross-product and a hyperbolic nonlinear term in its system equations. The resulting complex dynamics formed by these nonlinearities can be manipulated to evolve two- and four-wing attractors which form intricate attractors with distinct dynamic properties. This paper presents the synchronization of the system with identical and non-identical hyperbolic nonlinear terms using hybrid feedback control techniques. The results of the various simulations show that the coupled systems are mildly susceptible to varying hyperbolic nonlinearities using the synchronization scheme. However, the folding trajectories are highly sensitive to parametric perturbation in the controller-deactivated architecture of the original system.. The synchronized signals holding possibilities of applications in secure communication system modelling and design. © 2014 IEEE. Source

Umoh E.A.,Federal Polytechnic
IEEE International Conference on Adaptive Science and Technology, ICAST | Year: 2015

In this paper, we study the antisynchronization by adaptive controllers, of a generalized multi-wing butterfly attractor design template using the four-wing (n=1) structure as a case study. It was assumed that the parameters of the response system are not available for measurement while the two systems are identical. The direct coupling of the sawtooth wave functions of the identical systems with appropriate tuning of the gain coefficients of the adaptive nonlinear controllers resulted to the antisychronized trajectories of the drive and response systems in two-dimension space. Simulation results show that the chaotic regimes achieved antisychrony while the error and parameter error systems asymptotically stabilized in finite time in the sense of Lyapunov. © 2014 IEEE. Source

Bamisaye A.J.,Federal Polytechnic
Journal of Telecommunications and Information Technology | Year: 2013

Mobile Telecommunication is one of the fastest growing technologies in the world. The effects of its high frequencies and complex modulations to the exposed population are considered in this paper. Experimental studies examining a variety of effects on all levels of the organism, ranging from effects on single cells to effects which manifest themselves as reactions of the entire body, there have been a number of epidemiological studies in order to establish the possible causal correlations between higher exposures to HF EMFs. Recommendations on the reduction of the effects of EMFs of Mobile Telecommunication on humans was presented. Source

Makanjuola O.M.,Federal Polytechnic
Advance Journal of Food Science and Technology | Year: 2012

In the recent years, research efforts in the developing countries have been geared towards the improvement of protein quality foods using blends of legume and cereal which is considered a nutritionally balanced product. Therefore, this present study is aimed at finding local substitute for milk based product with high protein content of a well balancing amino acid composition and high digestibility; determining the proximate composition, microbial analysis as well as sensory evaluation of soy-corn yoghurt with a view of knowing the consumer acceptability of the product. Yoghurt samples were produced from blends of soymilk and corn milk (yellow maize corn) using Streptococcus thermophillus and Lactobacillus bulgaricus as starter cultures. Ratio of soy milk to corn milk were 80%:20%; 70%:30% and 100% soymilk as control. The yoghurt samples produced were coded A, B and C representing 100% soy yoghurt, 80%:20% soy corn yoghurt and 70%:30% soy corn yoghurt respectively. Yoghurt samples were subjected to chemical, microbiological and organoleptic assessment. The results of chemical analysis revealed protein contents of 4.30, 4.00 and 3.70% respectively for the samples. Fat contents varied between 2.10 and 2.60%, while ash contents of 0.50, 0.60 and 0.62% were obtained for the samples respectively. Total solids of between 10.98 and 8.80% were obtained with titratable acidity of 0.03, 0.05 and 0.06%, respectively. The carbohydrate contents of the samples ranged from 1.40 to 4.50% while all the samples showed fairly acidic levels. Water contents of between 89.00 and 91.20% were obtained. The microbiological examination revealed a tolerable level for all the samples. © Maxwell Scientific Organization, 2012. Source

Umoh E.A.,Federal Polytechnic
Proceedings of the 2nd Pan African International Conference on Science, Computing and Telecommunications, PACT 2014 | Year: 2014

A heuristic tuning of a Fuzzy Controller to examine the limits of gains that assures a unique control law for stabilization of a Rucklidge chaotic system is presented in this paper. The Rucklidge system is one of the paradigms of chaos that holds possibilities of applications in secure communication schemes and electrical power distribution systems where two identical or hybrid systems can be antisynchronized or synchronized for signal masking over public channels and power outage minimization and control. In this work, a low-cost and less rigorous fuzzy controller tuning strategy is presented where the controller output gain coefficients are tuned within a given bounds to produce unique solutions with better settling times in the context of state vectors stabilization problems. The strategy is less tedious when compared to other tuning methods used for controllers in some chaotic and non-chaotic systems. The approach has been validated on other chaotic systems to be robust for a class of chaotic system control. © 2014 IEEE. Source

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