PROBABILISTIC MODEL FOR AVAILABILITY AND PERFORMANCE EVALUATION OF PHOTOVOLTAIC SOLAR SYSTEM

Author: 
Suleiman, K, U. A. Ali, Bello M. S H. N. Yahya, Nazir Bala and Ibrahim Yusuf

In this study four sub-systems are considered to constitute photovoltaic solar system with
an objective to optimize the steady state availability that achieve maximum level. Thus,
the study analyzed the performance evaluation of photovoltaic configuration using
Chapman Kolmogrov’s techniques. Moreover, probabilities of all the states of the system
are obtained using a transition diagram and then availability expression is derived. The
behavior of both failure and repair with respect to availability are investigated using the

SECURITY OF EMAIL IN CLOUD COMPUTING

Author: 
Ahmed Baita Garko, Kabir Musa Muhammad and AbdulKarim Salih Aish

Cloud computing is a type of computing that relies on sharing computing resources rather
than having local servers or personal devices to handle applications. In cloud computing,
the word “cloud” is used as a metaphor for “the Internet”, so the phrase cloud computing
means “a type of internet-based computing” where different services such as servers,
storage and applications are delivered to an organization’s computers and devices
through the Internet. Even email system can be deployed in cloud computing

IMPACT OF ELEVATION AND NEARNESS TO WATER BODY ON THE WARMING /COOLING RATES IN ONITSHA METROPOLIS, NIGERIA

Author: 
I. A. Abdulhamed; I. C.Nduka, M.Ibrahim; E. O. IguisiO. F. Ati; and M.I.Azare

Man’s activities often lead to changes in the Land Use/Land Cover (LULC), and these
changes involve the modification, either directly or indirectly, of natural habitats and
their impact on the ecology of the site. This study seeks to examine the impact of
elevation and nearness to water body, which are the key surrogate variables that affect
modifications on our climate by urbanization by assessing the impact of elevation and
nearness to water body, on the cooling and warming rates of Onitsha metropolis. The

Dutse Journal of Pure and Applied Sciences Vol1 Issue 2

AN ARTIFICIAL NEURAL NETWORK BASED SYSTEM FOR FACIAL RECOGNITION

Author: 
Aminu Aliyu Abdullahi

An automated recognition of human faces by artificial intelligence is still a challenging
task, the similarity of different faces at angles beyond the 20 degree threshold and the
impairment caused by factors such as noise, lighting, clarity, disguise and variable
emotional expressions are only some of the problems faced by facial recognition systems.
Nevertheless, the unique effectiveness of facial recognition amongst biometric systems at
mass identification and uncooperative user identification makes it an important

ISSN: 
2476-8316

AN ECONOMIC ORDER QUANTITY MODEL FOR AMELIORATING ITEMS WITH TIME DEPENDENT DEMAND

Author: 
Gwanda Y.I. and Sani B.

In many instances, the demand for inventory items fluctuates with time. The demand may
increase, decrease or remain constant with time. An economic order quantity model for
ameliorating items with time dependent demand is hereby developed. Stocked items are
said to be ameliorative when they incur a gradual increase in quality, quantity or both
with time. In this paper a model that determines the optimal replenishment cycle time
such that the total variable cost is minimized is formulated. Numerical examples are given
to illustrate the derived model.

ISSN: 
2476-8316

AN ECONOMIC ORDER QUANTITY MODEL FOR BOTH AMELIORATING AND DETERIORATING ITEMS WITH CONSTANT DEMAND AND SHORTAGES

Author: 
Gwanda, Y.I. and Sani, B.

In this paper, we develop an Economic Order Quantity (EOQ) model for
ameliorating/deteriorating items where the demand is constant with shortage. Such items
include farm produce, poultry, fish and so on. When these items are in the production
center or taken to the sales counter, they incur increase in weight or utility due to growth
and at the same time may deteriorate in value due to diseases, death, feeding expenses
and other factors. An Economic Order Quantity model for such items is hereby formulated.

ISSN: 
2476-8316

AN EVALUATION OF THE CONCENTRATION OF GREENHOUSE GASES (CH4 AND CO2) FROM AGRICULTURAL WASTES AND CROPS RESIDUES FOR RENEWABLE ENERGY GENERATION AND ENVIRONMENTAL PROTECTION

Author: 
Yaro, M.N.

Easily biodegradable agricultural wastes and crops residues (maize cob, maize stalk and
banana leaves) were anaerobically degraded into greenhouse gases (CH4 and CO2) under
controlled conditions for 10 days. The cumulative volumes of the greenhouse gases
generated were subjected to compositional analysis, and the percentages of CH4 and CO2
were determined. The concentrations of CH4 and CO2 produced were estimated using ideal
gas equation of state (PV= nRT). The work showed that the volumes of greenhouse gases

ISSN: 
2476-8316

APPLICATION OF LINEAR PROGRAMMING TECHNIQUES IN MINIMIZING COST OF TRANSPORTATION A CASE STUDY OF COCA COLA BOTLING COMPANY DUTSE JIGAWA STATE

Author: 
Suleiman K, , Aliyu A. Aliyu, Cecillia .I Ibrahim Yusuf Bashir Yusuf and Habiba Awwal

The transportation model of distributing Coca-cola drinks from distributors to sales
outlets was considered, the data gathered were modeled as a linear programming model
of the transportation type and presented the transportation problem as tableau in which
the initial basic feasible solutions were obtained using the North-west corner method and
the least cost method with results as N5525 and N4525 respectively. The model was
solved for optimality using the stepping-sttone method and was verified using LINGO

ISSN: 
2476-8316

APPRAISAL OF MULTISETS AS A GENERALIZATION OF THE CANTORIAN SETS

Author: 
Ali Maianguwa Shuaibu

In this paper, the different representations of multisets that are instrumental to extending
formal notions from sets to multisets are provided. Attempt is also made to present briefly
the various forms of multiset operations and how such operations under sets also apply to
multisets. Furthermore, some results regarding multisets which contradict the classical set
theory results are identified and also directions for further research are suggested.
Keywords: Multisets, Multiplicity, Arithmetic Operations, Cardinality, Root Set

ISSN: 
2476-8316

ASSESSMENT OF HEAT STRESS IN CATTLE AND ITS ASSOCIATED INDICATORS IN KUST CATTLE FARMS AND ENVIRONMENTS

Author: 
Muhammad Alhaji . Isma’ila Sule Agata and . Abdurrazak Tijjani

The research examines the issue of Cattle heat stress condition in cattle and its associated
indicators in the farm of Kano University of Science and Technology Wudil and its environs.
The meteorological data was obtained from the KUST Meteorological station for the
calculation of thermal hygrometric index variables (mean monthly humidity and temperature).
Purposive sampling techniques were employed for selecting the respondents from within the
University farm and snowball from outside the university because the cattle herds are

ISSN: 
2476-8316

BENEFITS OF ADOPTING VIRTUAL LEARNING ENVIRONMENT TO DEMOCRATIZE HIGHER EDUCATION IN NIGERIA

Author: 
Salisu Garba,Suleiman Ibrahim & Salim Ahmad

Incredible advances in the field of information-communication technologies (ICTs), the
increase in population and the need for higher education in Nigeria suggest the adoption of
Virtual Learning Environment (VLE) in order to tackle some of the challenges in traditional
learning. Adopting VLE to supplement traditional learning environment is a very subjective
and context sensitive part of research open to countless interpretations. This paper
explained various aspects of VLEs, examined some of the pedagogical functions as well as

ISSN: 
2476-8316

CHARACTER RECOGNITION USING A GMDH TYPE NETWORK

Author: 
Aminu Aliyu Abdullahi

Creating an efficient system that can automatically recognize handwritten characters can
be challenging, this becomes more apparent when the immense variability in human
handwriting styles is taken in to account. The proficiency of character recognition systems
also changes with changes in the script being used. The relatively decent recognition
capacity of the human brain has motivated the use of artificial neural networks which
attempt to mimic the processes of the brain at this task, but even such endeavors have

ISSN: 
2476-8316

COMPARISON BETWEEN TWO DIFFERENT SYSTEMS THAT REQUIRE SUPPORTING UNIT FOR THEIR OPERATION USING KOLMOGROV’S FORWARD EQUATION

Author: 
Uba A. Ali1, Muhammad Junaidu Suleiman K and Ibrahim Yusuf

Many authors have studied the analysis of a two – unit cold standby redundant system with
two type of unit failure, but not much attention was paid on the analysis of two – unit cold
standby system requiring supporting unit for its operation. This study deals with the
reliability and availability characteristics of two different systems both requiring
supporting unit for their operation, the first system differ from second system due to
additional feature of preventive maintenance. The Mean Time to System Failure (MTSF) and

ISSN: 
2476-8316

Pages

SYNTHESIS AND CHARACTERIZATION OF DIMETHYLOL UREA

Author: 
Salihu Suleiman, Sunday Osemeahon and Abdullahi Mustapha

Considering the environmental pollution as a result of formaldehyde emissions, the new
synthetic route one - step process was used successfully to synthesize the product which
emitted low formaldehyde. The comparison of resin obtained using the conventional two –
step process and one – step process show better optical property, density, thermal
property and the reduction of formaldehyde emissions level and moisture uptake for paint
formulation. This resin formation process could possibly meet environmental regulations

ISSN: 
2476-8316

UTILISATION OF GROUNDNUT HUSK FOR ACTIVATED CARBON PREPARATION AND APPLICATION FOR TEXTILE EFFLUENT TREATMENT

Author: 
Saminu Murtala Yakasai, Abdullahi Mustapha and Muhammad Nasir Yaro

Carbon from groundnut husk is activated with zinc chloride and steam. Metals were
recovered from textile effluent in almost 100%. The removal was found to be more
efficient with increase in temperature. Freundlich and Longmuir adsorption observed was
found to decrease with increase in temperature. The combined intensity of adsorption
(1/n) defines by Freundlich and Longmuir isotherms are greater than one in all the cases,
which indicated that the process is favourable. Using the groundnut husk, decolourisation

ISSN: 
2476-8316

ASSESSMENT OF HYGIENE PRACTICES AND MICROBIAL LOADS IN DUTSE ULTRA-MODERNABATTOIR, JIGAWA STATE

Author: 
Shiaka G.P., Yakubu S.E., Aminu-Mukhtar M., Whong C.M.Z

Hygienic practice in the abattoirs where food animals are being processed is a major
concern since records have shown that the main meat consumed by the Nigeria populace is
beef. The quality of meat from abattoirs is relatively proportional to the hygiene status
of the butchers and other workers who handle meat as well. The level of hygiene and the
microbial loads of this abattoir were assessed by engaging workers in an interview using
structured questionnaire and by the bacterial load. The results obtained showed that

ISSN: 
2476-8316

GEOCHEMICAL APPLICATIONS AND LIMITATIONS OF PRISTANE TO PHYTANE RATIO IN DETERMINING THE REDOX CONDITION OF NORTH SEA OIL AND KIMMERIDGE SOURCE ROCKS’ PALEOENVIRONMENT OF DEPOSITION

Author: 
Salisu Nasir, Nasir Muhammad Augie, Ali Audu Sani and Geoff Abbott

This work tried to determine the nature of source rocks’ depositional environments in the
North Sea and the Kimmeridge using the Pristane/Phytane ratio (Pr/Ph), and at the same
time define and explain the Carbon Preference Index (CPI) used as a maturity parameter.
Geochemical analysis of a rock sample from the Kimmeridge in Dorset North England, and
Oil sample from the North Sea were carried out. The extractable hydrocarbon (Bitumen)
from the Kimmeridge rock was extracted by Soxhlet extraction method and the extract

ISSN: 
2476-8316

GENERATION OF BIOGAS FROM MAIZE COB AND ANALYSIS OF THE COMBUSTIBLE COMPONENT OF THE BIOGAS USING FLAME IONIZATION DETECTOR (FID)

Author: 
Gumel, S. M. and Yaro, M. N.

Anaerobic fungal degradation of maize cob by cellulolytic fungus (yeast) was carried
out at optimum operational conditions of temperature (330C), pH (7.3) and slurry
concentration (4g/25cm3) for 10 consecutive days. The daily and total volumes of the
biogas generated from the maize cob were collected and measured at daily fixed
interval. The CO2 content of the biogas was evaluated by passing the biogas into 1.0M
solution of NaOH while the H2S content of the biogas was evaluated by passing the

ISSN: 
2476-8316

LEARNING INFORMATION THEORY ANYWHERE AT ANY TIME ON SMART PHONE

Author: 
Farouk Lawan Gambo, Mohammad Hamada, Ahmed Baita Garko, Abdulrazaq Hassan Abba and Adamu Sani Yahaya.

The idea of using mobile learning has become common in our modern life. From the three
shift of technology-aided that learning have experienced, mobile learning has been
considered to be the feature of learning that will integrate other form of education process.
It provides efficiency, learning at point of interest, available at any time as major benefits.
The paper presents the multimedia content for learning Information theory on smart
phones based on prior studies. The content is designed to easy coding techniques learning,

ISSN: 
2476-8316

Pages