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Article (46)

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46 documents, page 1 of 5

Development of Winter Season Optimal Tilt Angle Model for Fixed Tilted Plane PV Installation in Akwa Ibom State, Nigeria

Ekpenyong, Akpan Ikoedem; Umoren, Anthony Mfonobong; Markson, Idorenyin (2017)
In this paper, a polynomial model is developed for determining the winter season optimal tilt angle for fixed-tilt PV installations in Uyo metropolis, Akwa state of Nigeria. Satellite-derived NASA SSE  solar radiation data  was used in the  study and the simulation was done using PVSyst software. The polynomial  model is given as  WTF(β)= -0.00013(β^2 ) + 0.00643(β) + 0.99991; where WTF(β)  is the winter average transposition factor and β is the tilt angle in degrees. The model has prediction...

Flowchart for Clustered-Based Channel Allocation Management Scheme

Ezenugu, Isaac A.; Eke, James; Onoh, G. N. (2017)
In the GSM system, several Base Transceiver Station (BTS) are controlled by a single Base Station Controller (BSC). In this paper, the BTSs in a given BSC is referred to as a cluster.  In this paper, flowchart for clustered-based channel allocation management scheme is presented. The mechanism is meant to reduce call blocking/dropping to the barest minimum. Usually, traffic intensity value varies from one BTS to another, as it is directly proportional to the number of GSM users that make or r...

Development of Students Result Management System: A case study of University of Uyo

Ekanem, Akpasam Joseph; Ozuomba, Simeon; Jimoh, Afolayan J. (2017)
In this paper, an automated platform for managing result of all categories of students in a seamless and interactive manner is presented. The system was developed using PHP, CSS, HTML, MYSQL and was hosted locally using Apache web server. The software development methodology adopted is a participatory incremental process model (PIP Model). The data used were obtained from the Department of Electrical/Electronic and Computer Engineering, University of Uyo. Functional decomposition of the syste...

Modelling of Nigerian Residential Electricity Consumption Using Multiple Regression Model with One Period Lagged Dependent Variable

Amlabu, Runcie; Okpura, Nseobong I.; Umoren, Anthony Mfonobong (2017)
This paper presents the modelling and forecasting of residential electricity consumption in Nigeria based on nine years (2006 and 2014) data and  multiple regression model with one period lagged dependent variable. A Socio economic parameter (population), and climatic parameter (annual average temperature) are used as explanatory variables in modelling the and  forecasting of residential electricity consumption in Nigeria. The results of the multiple regression analysis applied to the data ar...

Optimization of CCIR Pathloss Model Using Terrain Roughness Parameter

Nnadi, Nathaniel Chimaobi; Nnadi, Ifeanyi Chima; Nnadi, Charles Chukwuemeka (2017)
In this paper, optimizing CCIR  pathloss model  using terrain roughness parameter is presented. The study is based on field measurement of received signal strength and elevation profile data obtained in a suburban area of Uyo for   800 MHz GSM network. Particularly,  in this paper, the mean elevation and the standard deviation of elevation are used separately to minimize the error using least square method.  The results show that the untuned CCIR  model has a RMSE of  28.8 dB and prediction a...

Development of Swim Lane Workflow Process Map for Sales and Inventory Workflow Management Information System: A Case Study of Petrospan Integrated Services, Eket, Akwa Ibom State, Nigeria

Ezeonwumelu, Adanna Ngozi; Kalu, Constance; Johnson, Enyenihi Henry (2016)
According to experts, sales workflow management system can impact overall sales effectiveness, vis-à-vis, improve the efficiency of sales people, accelerate sales follow-ups, increase sales and reduce costs. On the other hand, inventory management system can be used to avoid product overstock and outages by tracking inventory levels, orders, sales and deliveries. This paper identified the problems prevalent in the existing sales and inventory flow management system at Petrospan Integrated Ser...

Scanning for Vulnerabilities in the Security Mechanisms of the Hosts in the Academic Institutions and Government Agencies

Hristov, Hristo (2018)
In this paper a sophisticated investigation and scanning for vulnerabilities in the security mechanisms of the hosts in the academic institutions and government agencies is made. The port and network scanner are specialized software tools that can discover detail information about the selected target hosts such as open, filtered, closed ports and the whole computer network topology.

Design of Web-Based Customer Relation Management Application for Power Distribution Company: A Case Study of PHCN Owerri Business Unit

Eunice, Akinloye Bolanle; Umoren, Anthony Mfonobong; Markson, Idorenyin (2017)
In this paper, the design of web-based customer care application for power distribution company is presented with Power Holding Company of Nigeria (PHCN) Owerri business unit as the case study.  The system is developed to address the problems of poor customer services experienced due to the manual approach that has been used by PHCN. The system provided web-based volunteered information system for capturing, sorting and disseminating customers’ information, as well as for attending to custome...

Investigation of the Performance of Site Diversity through Rain Gauge Measurements in South-South Nigeria

Achor, Jane O.; Udofia, Kufre M.; Jimoh, Afolayan J. (2016)
Site diversity is an effective technique to mitigate rain attenuation, especially in regions where rainfall rates are high. The South-South region of Nigeria is characterized by the tropical rain forest climate, exhibiting high rainfall rates almost all year round. This paper  investigates the performance of site diversity technique  in the South-South Nigeria at Ka-band frequency of 20 GHz. Rainfall data obtained from the Nigerian Meteorological Agency (NIMET) over a period of five years (20...

Performance Analysis of Stand-Alone Photovoltaic (SAPV) System for Category I Health Clinic in Orlu, Imo State, Nigeria

Ezenugu, Isaac A.; Umoren, Anthony Mfonobong; Okpura, Nseobong I. (2016)
In this paper, performance analysis of stand-alone photovoltaic (SAPV) system for Primary Health Centre in Orlu, Imo state was conducted. The USAID categorisation of health clinics is used to identify the Primary Health Centre  as Category I Health Clinic with corresponding daily and yearly energy demand of approximately 11500 Wh/day and 4197.5 KWh/year respectively.  PVsyst software solution was used to model and simulate the entire PV system. 22-year air temperature and monthly and annual a...