UNSTEADY MHD COUETTE FLOW BETWEEN TWO PARALLEL HORIZONTAL POROUS PLATES IN AN INCLINED MAGNETIC FIELD

In this paper, the study of unsteady Magnetohydrodynamic (MHD) couette flow between two parallel horizontal porous plates in an inclined magnetic field was carried out. The momentum and energy equations are written in a dimensionless form using the  imensionless parameters. Variable separable technique was employed to solve the velocity profile and temperature distribution. However, out of many results, we conclude that, at high Hartmann number Ha, the velocity u of the fluid decreases. When the magnetic field is high, it reduces the energy loss through the plates

Cost-Benefit of E-Learning under ODL of Developing Economies

Does it cost less to apply e-learning in open and distance learning (ODL) of developing economies? This paper assessed the cost-benefit of e-learning compared to different approaches to ODL. Cost-benefit analysis is a formal way of adding up the advantages and disadvantages of doing one thing as opposed to doing something else. A range of factors affects the cost-benefit of particular distance learning programme. This includes the number of students enrolled, the size of the curriculum, the number of years over which courses are offered without change, technology apply, the level of student support, working practice, and so on. Cost of essential e-learning equipments such as laptops, Internet modem, and mobile phones are analyzed side by side with the cost of residing in the institutes’ environment, photocopy of materials and the opportunity cost of time during working period for the student. While cost- benefit of correspondence are analyzed side by side with the cost-benefit of providing ICT centers. It is observed that e-learning application on ODL of less developed economies is cost effective in the long run when a sizeable number of students per programme are achieved. However, economic constraints on both the students and the ODL institutions require partial application in the short run. More so, it takes time to adapt students to scarce technology that is not affordable to them. The ODL institutes also require time and resources to up-date e-learning to international standard. Nevertheless, full application of e-learning in developing economies is feasible in the long run with more benefits than cost. In this world of scarce economic resources, e-leaning application in developing economies is inevitable

Birds of Wasai Reservoir, Minjibir, Kano - Nigeria

Birds are invaluable indicator species owing to their sensitivity to environmental changes. This survey was conducted to provide baseline information on the avifaunal diversity of Wasai reservoir, Minjibir, Kano, Nigeria (N120 53’, E 80 32’), an inland wetland habitat designated for irrigation, recreation, and other uses. We recorded 110 bird species belonging to 48 families, comprising of 87 resident species, three intra-African migrants, and 20 Palearctic migrants. The three most common families were Ardeidae, Accipitridae, and Ploceidae. Similarly, majority of these species belong to the insectivore and carnivore feeding guilds. Thus, Wasai reservoir is of significant ecological value as a home to many water-birds and terrestrial bird species, and also serves as a staging and wintering ground for a number of Palaerctic migrants. It is recommended that the Kano State Government should put in place necessary mechanisms towards the conservation and sustainable use of this important bird habitat

An Economic Assessment of the Impact of ICT on Performance Indicators of Water Resource Management in Africa: A Suggested Strategy for avoiding the eminent International Water Wars

Using data from 16 West African countries, this paper examines the links between Per Capita Income, Trade and Financial indicators, Education and Freedom indicators. Others are Internet users, Broadband and Mobile Cell phone Subscribers. Mean while Fresh Water Supply (which is assumed as a bench mark public sector-led water resource management performance indicators) and Access to Safe Drinking Water (a bench mark private sector-led water resource management performance indicators) represents indicators of water resources management. The results show that income, ICT and government trade policies influence the efficient management of cross-country water resource. Freedom indicators strongly affect water resource management performance indicators (WRMPI). Moreso, Internet Users, Broadband Subscribers, and Mobile cell phones Subscribers have a positive association with WRMPI. Contrary to wide spread expectations, education does not influence WRMPI.Key words: ICT, Water economics, water Resource Management, Nigeria, International Water War

An excel template for processing examination results for higher institutions in Nigeria

In this work, we designed, developed and implemented an examination result processing template for all the Postgraduate programmes in the Faculty of Science, Kaduna State University, Kaduna. The designed template when fed in with data computes and grades students appropriately. Its design was done using the “IF” and “OR” logical functions. It was deployed and tested for the performance in terms of accuracy and speed, and as attested by the end users, it is excellent.Keywords: MS Excel, “IF”, “OR”, Template, Examination, Grade, GP

An Assessment of Air Quality in and around Gwagwalada Abattoir, Gwagwalada, Abuja, Fct.

This work attempted an assessment of air quality in and around Gwagwalada abattoir. Air samples were collected from six points around the abattoir and recorded insitu for analysis.  The following parameters were investigated; Particulate Matter (PM), Carbon monoxide (CO), Sulphur dioxide (SO2), Nitrogen dioxide (NO2), Ammonia (NH3), Chlorine (CL2) and Hydrogen cyanide. The statistical test employed was the Student t-test in verifying the hypothesis. Based on the data collected and the analysis made, it was observed that the mean values of the parameters varied from points to points and at different time of the day. Also, the mean values of the parameters were compared with the FEPA recommended limits, and it was observed that Sulphur dioxide (SO2), Nitrogen dioxide (NO2) and Particulate matter were above the FEPA recommended limit. While Carbon monoxide (CO), Hydrogen cyanide (HCN) and Ammonia (NH3) are still below the standard limit. Air Quality Index shows that Sulphur dioxide (SO2), and  Nitrogen dioxide (NO2 have very poor quality index Recommendations include; relocation of abattoir to an area far from residences, inspection of abattoir process by professionals in related fields, proper waste management systems should be made. Keywords: Air, Quality, AQI, Abattoir, pollution, and Gwagwalad

NEDAC: A worm countermeasure mechanism

This article presents an Internet worm countermeasure mechanism that uses DNS activities as a behavioural technique to detect worm propagation. The mechanism also uses a data-link containment solution to block traffic from an infected host. The concept has been demonstrated using a developed prototype and tested in a virtualised network environment. An empirical analysis of network worm propagation has been conducted to test the capabilities of the developed countermeasure mechanism. The results show that the developed mechanism is sensitive in containing Internet worms.Keywords: Worm Detection, Malware, cyber defens

A discrete-time mathematical model for the control of weeds population density towards improving crop yields

In this paper, a mathematical model for the control of single weed species population density is proposed. The model’s steady-state solutions were obtained and analysed for local and global stabilities. The analysis reveals that the model is locally asymptotically stable and as well globally stable. Graphical simulations were carried out to support the analytic analysis of the model for the global stability and concludes that, weed proliferation may be controlled if the control strategy is target at the recruitment factors. Base on this finding, it is recommended that for effective control, weeds management tactics should be targeted at the recruitment stage rather than the usual practice of controlling mature weed through the application of herbicides. Hence, application of the results of this work may reduce or eradicate the weeds density and improve crop yield at its optimum capacity for sustainable food production

The Application of Airborne Geophysical and Satellite Imagery Data in the Delineation of Rock Boundaries and Structural Lineaments in Anka Sheet 52, Northwestern, Nigeria

The understanding of different lithologies and geological structures is a major task of geologists for accurate geological map during geological mapping exercise. In doing so, geologist must be able to cover broad areas of the surface or subsurface of the earth through collection of reliable remote sensing data over a wide region.  The Landsat ETM+ from Global Land Cover Facility (GLCV), Shuttle Radar Thematic Mapper- Digital Elevation Model (SRTM, DEM) data from Global Mapper version 14, Airborne Magnetic and Radiometric data from Nigeria Geological Survey Agency (NGSA) was acquired and interpreted with the help of computer-image processing technology such as Oasis Montaj and ArcGIS software to process, display and represent results covering the study area (Anka sheet 52). The basis of this technology is the representation of the radiometric data in a digital raster format that contain both amplitude and spatial information.  In this format, the data was analyzed, enhanced for visual inspection and combined with other types of data to form colour composite images that clearly subdivide the Basement complex rocks into Pan-African Granites from the Metasediments and the most eye-catching feature is the basement-sedimentary contact. Also, a major NE–SW trending structural lineament referred to as the Anka Fault trends for almost 25km and other subsidiary lineaments trending NW–SE with few E–W trends. Keywords: Landsat ETM+, Magnetic, Radiometric, Structural Lineament, Satellite Imagery. DOI: 10.7176/JEES/10-1-05 Publication date: January 31st 202

An enhanced iris recognition and authentication system using energy measure

In order to fight identity fraud, the use of a reliable personal identifier has become a necessity. Using Personal Identification Number (PIN) or a password is no longer secure enough to identify an individual. Iris recognition is considered to be one of the best and accurate form of biometric measurements compared to others, it has become an interesting research area. Iris recognition and authentication has a major issue in its code generation and verification accuracy, in order to enhance the authentication process, a binary bit sequence of iris is generated, which contain several vital information that is used to calculate the Mean Energy and Maximum Energy that goes into the eye with an adopted Threshold Value. The information generated can further be used to find out different eye ailments. An iris is obtained using a predefined iris image which is scanned through eight (8) different stages and wavelet packet decomposition is used to generate 64 wavelet packages bit iris code so as to match the iris codes with Hamming distance criteria and evaluate different energy values. The system showed 98% True Acceptance Rate and 1% False Rejection Rate and this is because some of the irises weren’t properly captured during iris acquisition phase. The system is implemented using UBIRIS v.1 Database.Keywords: Local Image Properties, Authentication Enhancement, Iris Authentication, Local Image, Iris Recognition, Binary Bit Sequenc