ABSTRACT Conventional grid-enabled portal designs have been largely influenced by the usual functional requirements such as security requirements, grid resource requirements and job management requirements. However, the pay-as-you-use service provisioning model of utility computing platforms mean that additional requirements must be considered in order to realize effective gridenabled portals design for such platforms. This work investigates those relevant additional requirements that must b...
ABSTRACT An Institutional Repository is essentially a web application that is capable of capturing, preserving and disseminating the intellectual output of a University or research institution in digital formats. The advent of the Mobile Web has ushered in a new wave of mobile devices - with multi-touch facilities and thus there has been a shift from Web access to Mobile Web access. This has brought about the need to make web applications accessible via mobile devices. This study investigate...
ABSTRACT Organochlorine pesticides are persistent environmental contaminants which are lipophilicand hydrophobic, leading to their accumulation in biological tissues and the subsequent magnification of concentrations in organisms, progressing through to the food chain. Shellfishes, finfishes, microlayer water, mixed layer water, epipellic and benthic sediment samples were collected from the Lagos Lagoon and analysed for organochlorine pesticide residues. Sampling was conducted between Decem...
ABSTRACT The study investigates the effect of propagation impairments such as rain, cloud, gases and tropospheric scintillation on fixed satellite communication link on earth-space path for frequencies between 10 and 50 GHz at Ku, Ka and V bands for 37 locations in Nigeria. Two standard elevation angles of 50, 550 as well as some elevation angles for links to recently launched Nigeria Communication Satellite, (NigComsat-1) were used in the computation of the propagation impairments for the...
Abstract The role of generalized ordinary differential equation (Kurzweil equation) in applying the technique of topological dynamics to the study of classical ordinary differential equation as outlined in [3, 4, 47, 51-58, 88-90] is a major motivation for studying this class of equations associated with the weak forms of the Lipschitzian quantum stochastic differential equations. In this work, existence and uniqueness of solution of quantum stochastic differential equations associated with ...
Abstract The numerical solutions of initial value problems of general second order ordinary differential equations have been studied in this work. A new class of continuous implicit hybrid one step methods capable of solving initial value problems of general second order ordinary differential equations has been developed using the collocation and interpolation technique on the power series approximate solution. The one step method was augmented by the introduction of offstep points in order ...
ABSTRACT The volume of information available on the Internet and corporate intranets continues to increase along with the corresponding increase in the data (structured and unstructured) stored by man organizations. In customer relationship management, information is the raw material for decision making. For this to be effective there is need to discover knowledge from the seamless integration of structured and unstructured data for completeness and comprehensiveness. This study addresses tw...
ABSTRACT The somatic and genetic effects of 2.45 GHz Microwave radiation (MWR) on male and female Sprague Dawley rats were studied. Two hundred rats were used for this study. They were grouped into control and exposed according to the parameters under consideration. The animals were exposed to various levels of specific absorption rate (SARs) using the microwave generator, model ER660E, Serial No MX704CCR from Toshiba UK Ltd. All animals were kept in healthy, and radiation free environment w...
ABSTRACT Mandawa Basin is an onshore pull-apart basin located at the southern east coast of Tanzania and covers an area of 16,000 sq.km, it evolved during Permo-Triassic time by ENE-WSW extensional movements during Gondwana rifting and NW-SE extensional movements resulted from drifting of Madagascar during Jurassic time. Hydrocarbon exploration started in 1952, with the first deep exploration well (Mandawa-7) drilled in 1958 by BP company, there after ten exploration wells have been drilled ...
ABSTRACT Voice-enabled e-Education system is the enabling technology that allows users to access Learning resources on a web using a telephone. Telephony applications in the area of education are developed mainly for the visually impaired to address the limitations of user interface of a mobile learner in accessing web learning resources. However, with the proliferation of learning resources on the web, finding suitable content (using telephone) has become a rigorous task for voice-based onl...
ABSTRACT In this work, Susceptible-Vaccination-Exposed-Infection-Treatment-Recovery mathematical model is proposed to study dog rabies disease transmission dynamics with vaccination and treatment in dog population group. Disease free and endemic equilibria were determined and subsequently their local and global stabilities were carried out. Tracedeterminant technique was used to determine local stability of disease free equilibrium point while Lyapunov function technique was used to determin...
ABSTRACT Aflatoxins are secondary metabolites produced by several species of Aspergillus fungi, which occur in food crops due to exposure of pre-harvest and post-harvest conditions. Complementary foods are considered an important source of energy, protein and fat for children aged between 6-24 months. The study was carried out to to determine levels of aflatoxins contamination of complementary flour composite and to explore the association between post-harvest handling practices and aflatoxi...
Abstract Healthcare Information Infrastructures for Public Hospitals, in the Republic of Sudan, especially Khartoum State, and Healthcare Information Exchange, are essential steps for civilizing Healthcare in Sudan. Better health is what we seek for our people, families, children, neighbours, friends and for everyone over the world. With the total number of Sudanese citizens which is approximately more than thirty-three million people, beneficiaries from the Sudanese public hospitals' facilit...
ABSTRACT The purpose of this study was to scrutinize the synergetic effects of the applied calcination temperature and holding time on the synthesis, characterization and photocatalytic antimicrobial applications of the developed polysaccharides based TiO2/Fe3O4 nanocomposite materials. Polysaccharide/TiO2/Fe3O4 nanocomposite materials were synthesized through modified sol-gel process using Titanium (IV) butoxide as precursor and Iron (II, III) oxide nanopowder as a support. The developed co...
Abstract This cross-sectional study was conducted for six months, from January to June 2013, to estimate the prevalence of internal lesions in slaughtered camels at Tambool slaughterhouse, to isolate and identify the aerobic bacteria colonizing these lesions and to determine the antimicrobial susceptibility profile of these isolates. A total of 280 camels . Samples were taken investigated from carcasses internal lesions at different organs for bacteriological investigation. Internal lesions ...