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Modeling Improvements and Analysis of Refrigerator System Approach Based on Experimental Performance

Ehibe Prince & Alozie Innocent
Department of Electrical Electronic Engineering
Abia State Polytechnic Aba Nigeria)
Email: cosp.prince@yahoo.com

ABSTRACT


This paper examines a set of simple equations describing a domestic refrigerator/freezer system and suggests several modeling improvements to enhance temperature analysis within the refrigerator system, based on experimental results. The experimental setup is described and limitations in the accuracy of the analysis are examined. Data are compared to predictions from a first generation model. Changes are made in the model to improve representations of heat exchanger geometry and flow regimes, and air side energy equations. The experimental data are re-examined in order to quantify the accuracy gained as model complexity was increased. For both models, parameters are estimated from the data Simscape environment of Matlab simulink and data’s are generated for obtaining the
required results.


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DEVELOPMENT OF HYBRID WIND TURBINE GENERATOR AND SOLAR POWER SYSTEM MODEL FOR RURAL ELECTRIFICATION

OSHIN, Ola Austin
Department of Electrical Electronics Engineering
Elizade University, Ilara-Mokin, Ondo State

ABSTRACT


The countries that are most energy-consuming, where there are industrial developments, where the energy demand is highest are the advanced and developing countries in the world (Mustafa, 2018). For instance, the average power per capital (watts per person) in the United States is 1,377 Watts. In Canada, it is as high as 1,704 Watts per person and in South Africa; it is 445 Watts per person. The average power per capital in Australia is 1,112
Watts and in New Zealand it is 1,020 W per person. Whereas, the average power per capital (watts per person) in Nigeria is 14 W per person. (Austin, O. O et.al, 2020). Also, power supply in many parts of Africa is erratic and characterized with a lot of faults and outages. In Nigeria, it is estimated that only 40 % of Nigerians are connected to the national grid and the connected population are exposed to frequent power outages (Abubakar et al, 2015, Austin O.A, 2020). Unfortunately, the effects of incessant power supply have destroyed many industrial activities, reduced employment and has increased crime activities in many parts of the continent (Africa). Therefore, in order to provide urgent solution to these problems and satisfy the high energy demand in African residential and industrial environments, electrical energy should be reliable, affordable, effective, and sustainable. This calls for an urgent establishment of alternative Renewable Hybrid Power Supply System which will provide continuous, reliable and effective power supply to the consumers. Hence, in this research work, feasibility assessment of the study area for the
establishment of Hybrid Power System (HPS) was carried out. The operating parameters and performances of the components of the Hybrid Power System were evaluated and the HPS Simulink models were developed using MATLAB/Simulink 8.1064 (2020a) version
software. The Hybrid Power System Model (HPSM) developed comprises of Solar Photo Voltaic System (SPVS) and Wind Turbine Generator (WTG) Models. Simulation of the developed Simulink models were carried out. Optimization process was carried out using Optimum Power Point Tracking (OPPT) Techniques and Genetic Algorithms (G.A). Design processes and control algorithms were established for the production of reliable and
efficient output power from the Hybrid Power System. Simulink and validation results obtained made it possible to generate and supply continuous, reliable, effective and stable electrical power to the consumers. Finally, the developed HPS model in this research work was found to be very useful for the establishment of Hybrid Power Plants which guarantees
the supply of continuous, stable and reliable electric power for various residential and industrial consumers.


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Impact of Capital Market Activities on the Nigerian Economy

Ikeobi, Nneka Rosemary
Department of Actuarial Science,
Faculty of Management Sciences, University of Jos, Jos, Nigeria.
Email: nikeobi2002@yahoo.com

ABSTRACT


This paper assesses the impact of capital market activities on the Nigerian economy by examining relationships between capital market indicators and economic growth using a multiple regression model. Gross domestic product (GDP) was used as proxy for economic growth while market capitalization (MCAP), number of deals (NODL), value of deals (VALD) and all-share index (ASI) were used as proxies for capital market activities. Money supply (MS) and credit to private sector (CPS) were included in the
model as control variables. The results revealed that market capitalization and value of deals had positive but insignificant impact on the economy, while number of deals and all-share index had negative and insignificant impact. These findings indicate that the Nigerian capital market has not impacted significantly on the Nigerian economy by efficiently channeling funds for real sector investment. The negative relationship between economic growth and number of deals and all-share index is indicative that
the Nigeria capital market is generally illiquid and points to its inefficiency in its ability to channel funds to the real sector of the economy for productive investment. The implication of these findings is that capital market regulators should intensify efforts aimed at removing all identified impediments to capital market operations to make it more attractive and accessible to firms seeking long-term funds. Keywords: Capital Market, Capital Mobilization, Capital Allocation, Finance, Economic Growth, Nigeria


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Effect of Management Communication Pattern and Change Process on Organizational Commitment in Selected Research Institute in Southwestern, Nigeria

1Ayansina, S.O; 1Soaga, R.A; 1 Ayinde, A.F.O; 1Oyeyinka, R.A. Oyeleye, A.A.
1Department of Agricultural Administration, Federal University of Agriculture, Abeokuta, Nigeria Email: drayansina@gmail.com

ABSTRACT


The study examined the relationship between management communication patterns and change process; and organizations’ commitment in selected research institutes in southwestern Nigeria. Multi-stage random sampling technique was utilized to select
198 (15%) respondents from 1,344 employees in different departments of the study organizations. Structured and pre tested questionnaire with Cronbach Alpha coefficient of 0.79 was used to collect data on socioeconomic characteristics of the respondents which was measured on ordinal and nominal levels; Pattern of communication, constraints and organizational commitment were also taken on standardized statements were measured on likert type of scale. Data collected were subjected to both descriptive and inferential statistics such as frequent counts percentages and mean scores while Pearson Correlation, linear regression and Analysis
of variance were used to test the study hypotheses. Results revealed that 72.6% of the respondents were below the age of 50 years, the majority (64.5%) were male and 92.5% were married. It was also found that 52.5% and 79.0% had M sc. degrees and earned about N200, 000.00 monthly respectively. The trends of communication patterns in the study organizations were horizontal (x-=3.87) follow by upward
(x=3.31), downward (x=3.16), and diagonal communication patterns (x= 2.99). The most constraints to communication process were status difference (x= 3.53), Poor listening skills (x=3.48) and information overload (x=3.41). Employee were normatively (x=3.43) committed to the organization followed by continuance commitment (x=3.21) and affective commitment (x=3.19). In the tested hypotheses, results of person product moment correlation analysis revealed significant but negative relationships between family size (r=0.20, p< 0.05), pattern of organizational communication (r=0.00p< 0.05); and employees commitment to the organization. There was a significant (p<0.05) relationship between
organizational change process(r =0.58) and organization commitment. Also, result of Analysis of Variance (ANOVA) revealed significant difference (F=0.65) in the pattern of communication operated in the different institutes selected for the study with the specific valves of NIHORT (X=67.62), FRIN (X=66.19 and IAR&T (X=65.99) respectively. It is concluded that patterns such as horizontal, upward, and downward communications in the study institutes have really enhanced the commitment of the employees to their respective institutes. Organization is therefore recommended to improve on diagonal pattern of communication in order to improve on task- related
and periodic report process in the various departments. Lastly, organization should rectify constraints to communication process like status difference, employees’ poor listening skills, inadequate trust and information overload. Keywords: Communication Pattern, Change Process and Organizational Commitment


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Optimising Intergovernmental Fiscal Relations in Nigeria

Ambe Alfred N.
Department of Accounting
Gombe State University
Email: ambeneba@gsu.edu.ng

ABSTRACT


Each level of government within each sphere of responsibility should exercise independent authority, such that it is clear that the fiscal policies adopted by one level of government are not limited to or conditional upon the fiscal policies adopted by another level of government. This principle behind classical fiscal federalism has been inundated by a complex of foundational and operational difficulties. These have underlined the quest for optimizing fiscal matters among levels of government. Yet the central government ever so often becomes preponderous in the attempt to create and articulate institutions and cooperations that lead to optimum. This act in itself has skewed fiscal intergovernmental relations in favour of the centre. This work investigates the attempt at optimising fiscal relations in federal systems of government, using Nigeria as the case. The work observes that it is not optimal for one level of government to provide national and local public goods and at the same time be responsible for the distribution and stabilization functions of government; and that an attempt by central government to supply local public goods is an attempt to make uniform what is practically not uniform. It therefore, concludes that scientific operation (implementation) of fiscal relation should be undertaken in the polity; corruption should be tackled in all its forms and that centralizing tendencies should be checked as a way of administratively keeping the optimizing goal within reach. Keywords: Optimisation; Fiscal relations; Fiscal Federalism. Corrupt Implementation.


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Ethics in Organisational Strategy and Culture

1Matthias O. Nkuda; 2Margaret Ekeins & 3Tatfeng Marie Madeleine
1Department of Management, University of Port Harcourt, Port Harcourt, Nigeria. 2Department of Management, Niger Delta University, Wilberforce Island, Yenagoa, Bayelsa State. 3Department of Office and Information; Niger Delta University, Wilberforce Island, Yenagoa, Bayelsa State
Email: matthias.nkuda@uniport.edu.ng; margaretekeins@ndu.edu.ng, mariefeng@yahoo.com

ABSTRACT
This paper discusses ethics in relation to organisational strategy and culture. The definitions and importance of ethics, organisational strategy and culture are clearly stated and explained. Above all, this concludes that an intricate relationship exists between ethics and organisational strategy including corporate culture which serves as the backbone or foundation of the relationship and connection. Keywords: Ethics, organisational strategy, strategos, corporate culture


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Intervention analysis of Daily Brazilian Real / Nigerian Naira Exchange Rates Because of the 2020 Nigerian Recession

Ette Harrison Etuk; Imoh Udo Moffat & Unyime Patrick Udoudo
Department of Mathematics, Rivers State University, Port Harcourt, Nigeria
Department of Statistics, University of Uyo, Uyo, Nigeria
Department of Statistics, Akwa Ibom State Polytechnic, Ikot Osurua, Nigeria
Email: etuk.ette@ust.edu.ng, moffitto2011@gmail.com; udoudogeno@gmail.com

ABSTRACT


This paper is an attempt to model intervention between daily Brazilian real (BRL) and Nigerian naira (NGN) exchange rates. A look at the time plot of the exchange rates series shows that there is an intervention believed to have been caused by the announced economic recession of the year 2020 in Nigeria induced by the advent of covid-19 pandemic. The data are therefore from September 2020 to December

  1. It is clear that the exchange rates rose sharply from November 20 up to 31 December, 2020. The pre-intervention data are non-stationary. This necessitates its differencing; the first differences are now stationary. The correlogram of the differences shows an autocorrelation structure of a white noise process. Postintervention
    forecasts of the model are each equal to the last pre-intervention rate of 72.2711. The transfer function of the model has been estimated and the fitted model has been shown to closely agree with the post-intervention data. This is a testimony to its adequacy. Pearson chi-square goodness-of-fit test confirms its adequacy. It may
    be found useful by planners and administrators. Keywords: Brazilian real, Nigerian naira, exchange rates, intervention, 2020 Nigerian
    recession, covid-19


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How Financial Inclusion Drives Economic Growth in Nigeria

Hafiz Ahmed & Badariyya Ahmed,
Department of Banking and Finance,
Kano State Polytechnic
Email: kawuhafiz@gmail.com; badariyyaahmed@gmail.com

ABSTRACT


Nigeria is among the emerging market with mixed economy changing through financial, service, manufacturing and technological sectors. It is ranked as the 30th-largest economy in the world in terms of nominal GDP, and the 23rd-largest in terms of purchasing power parity. It has become evident that financial services sector has been a
vital sector, and of concern that needs to be reengineered and promoted in order to ensure outreach of financial inclusiveness to the unbanked as well as under banked sectors of the society. Financial inclusion has retain to pull toward attention through the global financial development across the years within an economy because of its ability to fasten economic growth. Given that millions of people are excluded from formal financial
services globally, there is a potential loss of deposits or savings, loss of investible funds and an attendant loss of capacity of the global economy to generate wealth. Accessibility to financial services is generally recognized as way of enhancing credit creation and promoting capital accumulation through increasing the level of several activities like economy and investment. Most importantly, access to finance and its use, is an essential
policy tool used by governments and policy makers to stimulate economic growth. Making the availability of finance affordable to economic agents, there will be increase in economic activities and perhaps output growth. Financial inclusion offers a platform that could accommodate all income earners to be integrated into the financial system
for inclusive growth.


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Influence of Depression on Malnutrition among Undergraduates in Babcock University Ilishan-Remo.

1Ani Ime F;2Ajuzie NnennaC; 3Egbuna   Anwulichukwu. S;4Ajuzie Nwaobilor C and 5Alfa Tirzah

Department of Nutrition and Dietetics

Babcock University, Ilishan-remo, Ogun State

Email:ajuzienn@babcock.edu.ng

ABSTRACT

Many young people suffer from depressive symptoms when facing difficult academic tasks and life challenge. Depression, in particular, is common in the young people and can result in loss of appetite, weight, and considerable malnutrition and dehydration. On the other hand, physical illness and malnutrition may lead to depression in this vulnerable group of population. The study was to assess the influence between malnutrition and depression among undergraduates in Babcock University. A cross sectional study design among Babcock University students. The study population was 150 students using a simple random sampling technique. It was concluded that undergraduates in Babcock University had a good knowledge of malnutrition (89.3%) and depression (62.0%).The prevalence of depression in this study was 15.3%. The study revealed that, there is a significant relationship between of knowledge malnutrition and knowledge of depression among undergraduates in Babcock University (r=0.219, p= 0.03).There was no significant association between the knowledge of malnutrition and the gender and BMI, however there is a significant relationship between knowledge of malnutrition and the age distribution of respondents. There was a significant relationship between the knowledge of depression and the gender, age distribution and the BMI of respondents. The study recommends that the school authority should put measures to curb depression among undergraduates by making it compulsory for students to see a guidance counselor every semester

Keywords: Malnutrition, Depression, Influence, Knowledge,


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Social Media Usership in Benue State and the Proliferation of Hate Speech on the Nigerian Social Media Space

1Jacob Shagbaor Suemo, 2Omale Gloria Eneh &3Terkimbir Nyianshima

1&3Department of Mass Communication, Benue State University Makurdi.

2Department of Information and Media Technology, Federal University of Technology, Minna.

Email: ssuemo@bsum.edu.ng, e.gloria@futminna.edu.ng

ABSTRACT

The study was an assessment of social media usership and the proliferation of hate speech on Social Media Space in Benue State. The aim was to ascertain the specific social media platforms in which hate speech is mostly used, identify the nature of the relationship between social media use and the proliferation of hate speech and to pinpoint the socio-cultural factors responsible for the proliferation of hate speech. The research was a survey with questionnaire as instrument. The population of the study was 38,778 drawn from four major LGA in the State. Aroaye’s (2004) formula for determining sample size was used to arrive at a sample of 384 randomly selected for the study. The study was anchored on the uses and gratification theory and public sphere theory. Findings revealed that Facebook and Twitter are the social media platforms in which hate speech is mostly used in Benue State and that abuse of power by political leaders is the major factor for the proliferation of hate speech. Furthermore, cheap accessibility and protection of identity were discovered to be the major backbone for proliferation of hate speech while multicultural divide and marginalization were discovered to be the major socio cultural factors responsible for proliferation ofhate speech. The study therefore recommends that government should ensure equitable distribution of resources and avoid marginalization of some religious ethnic groups. Also, laws protecting against hate speech should be enacted as fast as possible to help curtail the proliferation of hate speech on the social media in Nigeria, provided such laws are not enacted in sentiment to suppress or witch-hunt certain truths, groups or individuals amongst others.

Keywords: Hate speech, Social media, new media, Proliferation, Marginalization