ELECTRICAL MODELING AND SIMULATION OF A MEDIUM-SIZE SATELLITE

Titiloye Stephen Oyediran & Titiloye Yetunde Adebimpe

Department of Electrical Engineering

 Federal Polytechnic, Bida.

Email: titiloyeso2014@gmail.com

ABSTRACT

Aiming on the requirement of generating an accurate electrical model of a medium size satellite, the software created for this paper provides a complete simulation of a medium to bigger size satellites. This paper analyses the disadvantage in the vulnerability in the existing satellite to harsh environment condition like shadowing, radiation and extreme temperature variations in space. Solution is thereby offered through modeling and simulation of a medium-size satellite in a more realistic fashion. The methodology of the modeling includes system design and solidification of a generic solar array, distribution system, backup battery system, load analysis system and a complete thermal model for the battery and solar array. The software includes solar cell to solar array relations, bypass systems, imbalance in array wings, array power generation and shunting model, battery charge and discharge model and a load profile. The modeled satellite shows during tests that during daylight, the system runs effectively, charging the battery. Thence, excess power is calculated and shunted. And during darkness, the panels were able to provide power through the battery. All cell/array/battery features are therefore highly realistic and database modeled.

Keywords:- Satellite, Solar Array, Power Regulation, Back-up Battery, Electrical Model.


Table of Contents

The Influence of Instructional Media on the Academic Performance of

Biology Students in Ikono Local Government Area

Chibuzor A. Ekwonye                                                                                                 1-16

A Socio Philosophical and Political Evaluation of Governance Challenges

 in Nigeria and the Way Forward

Phillips Olubiyi and Omowunmi, Joshua Olusegun                                        17-31

Socio-Cultural Barrier to the Utilization of Family Planning Services

among Child Bearing Mothers in Bauchi State

Magaji, Abdulbaqi A. & Chime, Helen E.                                                        32-55

Designing Need-Based Crriculum for Adult Learners: A Perspective

Amina Abba Sanda, Augsta Obum Okwute and Aminchi Daniel                   56-68


DESIGNING NEED-BASED CRRICULUM FOR ADULT LEARNERS: A PERSPECTIVE

Amina Abba Sanda, Augsta Obum Okwute and Aminchi Daniel

Continuing Education and Extension

Services Department,

University of Maiduguri, Maiduguri

                                             ABSTRACT
Curriculum is a plan or an organization of the total learning experiences the learner is expected to engage in under the guidance of an educational institution or agency. It is a well known fact to educationists that curriculum is central to any educational programme, its relevance to needs and aspirations of the adult Learners cannot be overemphasized. Any curriculum which is designed without taking into cognizance the background, needs and aspirations of the learner will hardly succeed. Since adult education is primarily a need-based type of education, curriculum planners are expected to embark on needs assessment so as to know what should constitute the curriculum goals and objectives. The curriculum must contain the widest possible range of activities which have the capacity to attract interest, appreciation and participation. In this vein, the adult literacy instructors and organizers need to be well trained in principles of Andragogy. They also need to know the nature of the learners and be well acquainted with current methods of instructing adult learners. Therefore, to ensure success, the adult literacy curriculum must address the needs of the beneficiaries. The paper also discusses the components of a curriculum which include curriculum structure, objectives, contents, implementation and evaluation.

Keywords: Need-Based Curriculum for Adult Learners A Perspective


SOCIO-CULTURAL BARIER TO THE UTILIZATION OF FAMILY PLANNING SERVICES AMONG CHILD BEARING MOTHERS IN BAUCHI STATE

Magaji, Abdulbaqi A. & Chime, Helen E.

Department of Public and Community Health,

Novena University, Ogume, Kwale, Delta State

Email:  *magaji@gmail.com /jesumowo0630@gmail.com /helenoputa2002@yahoo.com

ABSTRACT

This study was carried out to investigate the socio-cultural barriers against the utilization of family planning services by mothers of child bearing age living in Bauchi state. A cross sectional survey design was used in this study, while simple random sampling procedure was used to obtain a sample size of one thousand and forty-eight. A structured questionnaire using Likert two and four point scaling system was used as the instrument of data collection. The instrument was made up of two sections. Section A was on demographic variables, while section B was on the utilization and the barriers to family planning. Six research questions were answered, while three hypotheses were tested. Statistical package for social sciences, version 22 was used to analyze the data obtained.  The data obtained shows that the major barriers to family planning are, the misconception that contraceptives prevent child bearing permanently, 694(66.2%); belief that having many children symbolizes high social status, 682(65.0%); adolescents are not considered as adults until they have a child, 682(65.0%); community is not in support of family planning, 656(62.6%); parents are not in support of the use of contraceptives, 626(59.8%). There was also significant relationship between socio-cultural barriers and attitude of mother of child bearing age in Bauchi State (r =0.324, p<0.05). There were indications that women of child bearing age in Bauchi State were not aware of different contraceptives methods available. The study recommends women of child bearing should be counseled by the health workers of the different types of family planning services and that Health organizations that are responsible for the production of these family planning types should improve on their productions so as to ensure minimal side effects.

Keywords: Barriers, Socio-cultural, Family Planning, Contraceptives, Child-bearing


A SOCIO PHILOSOPHICAL AND POLITICAL EVALUATION OF GOVERNANCE CHALLENGES IN NIGERIA AND THE WAY FORWARD

Phillips Olubiyi and Omowunmi, Joshua Olusegun

Department of General studies, Federal Polytechnic, Ilaro Ogun State, Nigeria

Department of Public Administration, Federal Polytechnic, Ilaro, Ogun State,

E-mail: telcomas@yahoo.co.uk

ABSTRACT

Since the attainment of independence by most African countries in 1960, regarded as the golden year of the continent the problem of leadership and issues of good governance have continued to have devastating impact on nation building in Nigeria. Indeed, with the exit of the first generation African leaders such as Kwame Nkrumah of Ghana, Julius Nyerere of Tanzania, etc. who were more foresighted and pragmatic the current political leaders, has remained problematic for Africa. This paper argues that in addition to the aforementioned problems other critical issues of ethnicity, religious crises, boundary-border disputes inherited from the colonial era, good governance, refugee crises, election disputes, poor leadership, governance, terrorism, and the challenge of nation building have equally continued to have deteriorating and concomitant effect on the process of nation building on Nigeria especially in the 21st century.

Keywords: Leadership Challenges, Corruption, Human Rights, Civil Strife


THE INFLUENCE OF INSTRUCTIONAL MEDIA ON THE ACADEMIC PERFORMANCE OF BIOLOGY STUDENTS IN IKONO LOCAL GOVERNMENT AREA

Chibuzor A. Ekwonye

Academic Programmes Department

National Commission for Colleges of Education (NCCE)

Central Area Abuja

Email: annygeorge4sure@yahoo.com

ABSTRACT

This study reported the extent to which instructional media are being utilized in teaching and learning of biology in Ikono local government area of Akwa Ibom state. In order to effectively handle the study, four research questions were formulated to guide the study. Description statistical method was employed to determine the impact of teacher’s effectiveness. Five secondary schools were selected to represent the population of study, the result of the findings revealed that instructional media were not readily available. Many teachers were not competent to integrate technology into teaching and learning. From the analysis, students that was taught with instructional media performed better. It was therefore, recommended that teachers should receive frequent technological training and that instructional media should be made available and accessible in schools to enhance effective teaching and learning.

Keywords: Freq. – Frequency, STEM – Science Technology Education & Mathematics, ICT – Information Communication Technology


Table of Contents

Some Engineering Properties of Soybean (Glycine Max) Seeds

as Related to Primary Processing

Fumen, G. A.                                                                                                    1-26

Automobile, the Engine of Urban Expansion

Arc. Boyce A. Odoko.                                                                                       27-33

Development of Porcelain Balusters from Local Ceramic Raw

Materials in South Eastern Nigeria

Osonwa Nobert Okechinyere, Nwabineli Emmanuel Onochie, Ekwueme

 Ekenna, Nneka Eke Inya-Njoku & Abe Oluwakayode Boluwaji                     34-44

Feasibility Index (FI) Model Evaluation of Evaporative Cooling

Potential of Mubi-South

I.U. Haruna; M. I. Tikau and B.S. Momoh                                                         45-57

Solar Energy in Nigerian Buildings: A Pathway to Energy Efficiency

Onwugbonu Dike Ajie and Arc. Paul Uchenna                                                58-69

A Public Aquarium to Revitalize Tinapa and Help Protect Aquatic

Lives in Nigeria

Wouangni Tchouamo Patrice Bertin,                                                              70-80


A PUBLIC AQUARIUM TO REVITALIZE TINAPA AND HELP PROTECT AQUATIC LIVES IN NIGERIA

Wouangni Tchouamo Patrice Bertin,

Rivers State University,

ABSTRACT

It is widely accepted that Tinapa projects are in crisis. They face a barrage of daily threats including facilities degradation, lack of federal government policy to support the free trade zone, high maintenance cost and underutilization of existing infrastructures. While Tinapa need crowd to function, the coastal line is overcrowded and the strain on Nigeria waters is conspicuous. They face the treats of overfishing, habitat degradation, increased runoff and septic discharge from coast settlements. This paper will show that with the development of a public aquarium , with programs instituting and implementing conservation solution that will stimulate public involvement, we can provide the crowd Tinapa needs to function and at the same time create public awareness to the protection and conservation of marine species and the environment. With the case study of some aquariums that have contributed to the economic revival and growth of the localities they are built, this study will evaluate challenges and opportunities associated with the development and expansion of aquarium programs to promote personal and civic oriented activity that will revive Tinapaand protect aquatic resources.


SOLAR ENERGY IN NIGERIAN BUILDINGS: A PATHWAY TO ENERGY EFFICIENCY

Onwugbonu Dike Ajie and Arc. Paul Uchenna

Department of Architecture,

Rivers State University, Nkpolu  Oroworukwo, Port Harcourt

Email:dicky4ya@yahoo.co.uk

ABSTRACT

Due to the increase in living standard and demand, energy conservation has become important in industrialized and developing countries. In respect to rational use of energy, this paper evaluates solar energy in Nigerian buildings with the aid of passive and active solar architecture approaches which makes use of specific building design principles and reduces the artificial energy requirements for achieving indoor thermal comfort. As a climate responsive architecture, building design criteria has been studied with the help of several parameters like geographic location and climatic conditions, building shape, orientation, selection of construction materials, building openings viz. windows, selection of suitable sunshades, etc. All the salient building design parameters are studied and important findings and recommendations are suggested as the outcome of the study. In our quest for sustainable development and the achievement of a safe environment, numerous alternatives to power supply have been exploited. The challenge of erratic and insufficient power has for decades bedeviled our dear nation resulting in the proliferation of the use of generators in multiple locations within the built environment. This solution apparently is the people’s response to the nations decaying infrastructure but invariably produces an environment which is unsafe to its inhabitants. In recent times, reports have shown that the emissions arising from this practice have caused the death of occupants. It is common knowledge that the use of solar energy as an alternative power source is not yet ubiquitous in this country. In recent times, innovation in the area of thermal solar and photovoltaic provides possibilities of its introduction in the building fenestration and facade. This study however examines some existing solar powered facilities in Nigeria.  The study is useful for various resource persons involved in construction activities for designing energy efficient buildings.

Keywords: Solar Energy, Environmentally friendly, Passive and Active solar.


FEASIBILITY INDEX (FI) MODEL EVALUATION OF EVAPORATIVE COOLING POTENTIAL OF MUBI-SOUTH

I.U. Haruna1; M. I. Tikau2 and B.S. Momoh3

1,2,3 Department of Mechanical Engineering,

Federal Polytechnic Mubi, Adamawa State, Nigeria

E-mail: heldabuk@yahoo.com

Abstract

Thermal comfort has a great influence on the productivity and satisfaction of indoor building occupants. In some developing countries like Nigeria, poverty and epileptic power supply are the twin problems impeding people from the use of refrigerated-based air conditioning systems to achieve thermal comfort. Furthermore, the use of some refrigerants has adverse effect on the environment. Evaporative cooling systems are viable options for achieving thermal comfort especially in hot and dry climates. These systems, apart from their low cost and power requirement, they are environmentally friendly. This study attempts to determine the viability of using evaporative cooling to achieve thermal comfort in Mubi-South using the feasibility Index model. The computed feasibility indices of the study area in the months of January through December are – 0.08, – 1.62, 4.04, 13.09, 27.06, 17.36, 18.39, 18.42, 18.24, 3.12, – 0.12 and – 0.28 respectively. Employing the concept of the feasibility index (FI) model reveals that comfort cooling can be achieved in the months of January, February, March, October, November and December while relief cooling can be achieved in the month of April. The model also reveals the unsuitability of evaporative cooling in the months of May, June, July, August and September. Considering both the comfort and the relief cooling periods based on the FI model, evaporative cooling can therefore be a suitable alternative to refrigerated-based air conditioning systems in Mubi-South and other areas with similar climatic characteristics.

Keywords: Evaporative cooling, Thermal comfort, Temperature, Relative humidity, Feasibility index


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