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Dutse, Nigeria

Miyim A.M.,National University of Malaysia | Miyim A.M.,Federal University, Dutse | Ismail M.,National University of Malaysia | Nordin R.,National University of Malaysia
Journal of Theoretical and Applied Information Technology

Considered as low-powered cellular base stations, Microcells (Femtocells) are found to be deployed in homes and public places. They provide good coverage for very high user data throughputs and operate on licensed spectrum. This paper propose cell reselection transmit beacon (CRTB) transmitted by microcell on the cellular frequency to aid quick discovery of microcell. The performance of microcell discovery is achieved by setting a proximity threshold for the macrocell high enough to impact on mobile user equipment (UE) in the network. Simulation results demonstrate the effectiveness of the beacon in triggering cell reselection while impacting little on the macrocell UE throughput and facilitate the handover procedure at the microcell base station. © 2005-2016 JATIT & LLS. All rights reserved. Source

Alhassan M.A.,Federal University, Dutse | Jawawi D.N.A.,University of Technology Malaysia
2014 8th Malaysian Software Engineering Conference, MySEC 2014

Effective measurement for successful Statistical Process Control (SPC) implementations across any level of Capability Maturity Model (CMM) is not a very straightforward activity. Based on CMM standard, SPC is only applicable to its higher maturity levels so as to tackle quantitative process management issues like out-of-control process and to point out further areas of process improvements. This study reveals that; SPC can be used at CMM level 2 to repeatedly control process but with some difficulties. The difficulty of accurate process measurement for successful SPC implementation is addressed by proposing a Sequential Strategy for Process Measurement (SSPM). This strategy can support software organization's process measurement activities for process control and management. © 2014 IEEE. Source

Steel G.,University of Strathclyde | Mustapha A.,Federal University, Dutse | Reglinski J.,University of Strathclyde | Kennedy A.R.,University of Strathclyde

The multidentate compound, tris-(o-tbutylthiobenzyl)- aminoethylamine (L4), which contains four nitrogen and three sulfur donors has been synthesised by combining 2-amino-methyl-1,3-diamino-propane (tren) with o-tbutylthiobenzaldehyde. L4 has been reacted with the nitrate salts of nickel, copper and zinc to give a series of L 4M(NO3) complexes which were crystallographically characterised. In all cases the metal binds to the N4 motif proffered by the tren moiety. The nickel complex achieves a hexacoordinate geometry by ligating with a didentate (-O,O′) nitrate. Copper and zinc both produced five coordinate species by ligating with a unidentate nitrate. None of the species reported include the thio-ethers in the coordination sphere of the metal. Replacing nitrate with nitrite in the copper system allows the synthesis of a five coordinate unidentate, oxygen bound, nitrite complex. A number of unsuccessful attempts have been made, using Cd, Pb and Au, to assemble the three thioethers groups into a secondary coordination motif for metals. These reactions produce a series of L4M-halide complexes which have again been crystallographically characterised. © 2013 Elsevier Ltd. All rights reserved. Source

Gumel A.M.,University of Malaya | Gumel A.M.,Federal University, Dutse | Annuar M.S.M.,University of Malaya | Yusuf H.,University of Malaya
Journal of Nanomaterials

Biodegradable and biocompatible polymeric nanomaterials, serving as biomedical devices have garnered significant attention as a promising solution to therapeutic management of many chronic diseases. Despite their potentials, majority of the synthetic nanomaterials used in biomedical applications lack crucial properties, for example, ligand binding sites, responsiveness, and switchability to efficiently deliver intended drugs to the target site. Advancements in manipulating nanoscale geometry have incurred the incorporation of triggered release mechanism within the nanomaterials design. This expanded their potential applications beyond nanocarriers to theranostics exhibiting both tandem drug delivery and diagnostic capabilities. Additionally, it highlights possibilities to design nanomaterials that could translate chemical response(s) to photometric display, thus making affordable biosensors and actuators readily available for biomedical exploitation. It is anticipated that, in the near future, these implementations could be made to access some of the most difficult therapy locations, for example, blood brain barrier to provide efficient management of Alzheimer, Huntington, and other neurodegenerative diseases. This review aims to serve as a reference platform by providing the readers with the overview of the recent advancements and cutting-edge techniques employed in the production and instrumentation of such nanomaterials. © 2015 Ahmad Mohammed Gumel et al. Source

Onumara O.J.,GSS Maigatari | Taura L.S.,Bayero University | Ndikilar C.E.,Federal University, Dutse
African Review of Physics

An analytical application of the 1-D Brownian dynamics in a fluid is used to study the thermal dynamics of bioenzymes. The origin of thermal fluctuations that give rise to mutations during the conduct of DNA test using imaging techniques was identified and a solution to carry out the techniques without thermal fluctuations of the bio-enzymes has been suggested. The Langevin equation, the consistency of the equipartition of the kinetic energy theorem and the fluctuations of the positions 1-D Brownian particle in the fluid were used. Also, the results on previous work on thermal dynamics of bioenzymes were reproduced analytically and used to plot the mean squared displacement (MSD) against time. Our results give a straight-line graph for isotropic random-walk, a curve facing downwards for confined random-walk, a three point segment graph for unrestricted and isotropic random-walk and finally a zigzag line graph for partially confined random-walk. Comparative studies of the above results with that of Aleksandra Radenovic are in good agreement. However, the result only differs in a partially confined random-walk, where Aleksandra Radenovic had a hopping nature of graph for the 2-D Brownian dynamics. Source

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