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Professionals’ Perception of the Challenges of Sustainability of Green Materials for Construction Projects in Abuja, Nigeria

Zubair Ahmed
Department of Quantity Surveying, School of Environmental Studies.
The Federal Polytechnic, Idah.
Email: zubairahmed6295@gmail.com.

ABSTRACT


The clamour for sustainable development and reduction of greenhouse gases led to the green concept which in recent times, has gained significant momentum. It is a well-known fact that housing play an essential role in the wellbeing of people because it is only place where people can fall back to relaxed and re – calibrated to put body and soul together. The purpose of this study was to investigate professionals’ perception on the challenges of sustainability of green materials for construction projects in FCT Abuja and to identify the challenges militating against green materials for construction projects. A structured questionnaire was used to collect information from various respondents who were construction professionals. The survey was conducted using random sampling techniques were used to select one hundred and twenty (120) respondents out of which (90) of them were suitable for analysis, which represent a potential responses rate of seventy five percent (75%) of the total. The data were analyzed using simple percentile and mean item score. The research shows that built environment professionals need more sensitization to
raise the level of awareness is recognized. The finding revealed that green
features lack of awareness, human neglect, limited accessibility to relevant
information, social economic influence, climatic and weather influence, client’s preference, non availability of local materials, no standard for structural control of the green building, lack of adequate knowledge and technical know –how by professionals to handle the job, lack of interest in sustainable building development. In conclusion, there is need to educating the relevant parties to raise awareness of the green concept is vital to overcoming several challenges in the dissemination of sustainable practice such as lack of awareness and knowledge of these methods.
Keywords: Green materials, Challenges, Construction projects.


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Territoriality and Territorial Conflict in North Central Nigeria: Implication for National Development

Adah, Paul Danladi & Joy Anwuli Jegede
Department of Urban and Regional Planning,
Federal Polytechnic, Idah. Kogi State
Email: adahproject@gmail.com

ABSTRACT

The research is on the concept of territoriality and
Territorial conflict in Nigeria; and its implications for national
development. The objective of the study is to examine the concept of
territoriality and its impacts on development. A qualitative approach was
adopted for the study. The data collected for the study were from
secondary sources and were analysed using content analysis. The finding of the study shows that the concept of territoriality has both positive and
negative tendencies. That conflict arises when a particular space (land) is
contested by an intruder laying claim to land and its resources. Resistance
in defence of the claim results in a dispute over territorial space. The
study shows that the impact of herdsmen’s activities inflicting injuries and
death is higher compared to other perpetrators of violent attacks. In
conclusion, no nation can develop in crisis and confusion; therefore, the
urban planning approach can be adopted in resolving the claim and
counterclaim through territorial planning. The secularity of Nigeria’s state
and federal system of government provides avenues for territorial
planning. The paper, therefore, recommends territorial planning in
resolving the conflict. Keywords: Conflict, Ethnic, Territorial, Territoriality, Territorial Planning and Nations Development


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Performance Evaluation of the Potentials of Volcanic Deposit (Biotite Granite Powder) as a Pozzolanic Material in Concrete.

Yahaya A. M.; Ishaya A. A.; Anowai S; Zakka P. W; Iwu V.; Pam M. &
Bwarak J. R
Department of Building
University of Jos, Jos, Nigeria

ABSTRACT


Ordinary Portland cement (OPC) is one of the most consumed materials after water. It is used as the main binding material in construction industries across the globe. However, it is liable for carbon to CO2 emissions and so on. Besides it is one of the most energy intensive materials after aluminium and steel. This concern had since decades made esearchers to develop other types of cement particularly the pozzolanic Portland cement (PPC). The PPC are admixtures to Portland cement in concrete aimed at better performance in concrete. The research was
aimed at investigating the suitability of biotite granite as a pozzolana in concrete by evaluating the potential of the biotite granite deposit from Buji complex in Hwol Buji of Bassa LGA Plateau state, Nigeria. The objective of the research looks at the chemical and physical properties of the volcanic deposit in view of variations between the OPC and the volcanic deposit. It also evaluated the workability and soundness of the volcanic deposit/cement. The work was concluded by evaluating the pozzolanic activity index of the volcanic deposit with cement by investigating the compressive strength of the hardened concrete produced with the partial replacement of OPC with biotite granite powder. The chemical properties of the material were determined by Energy Dispersive X-Ray
Fluorescence (EDXRF) technique. Lech atelier method was used to determine the soundness of cement paste containing the volcanic deposits; the characteristics of concrete made with the materials in partial replacement of OPC in the concrete samples were also evaluated. A standard mix proportion of 1:2:4 was adopted and water cement ratio kept constant at 0.53 for all the concrete mixes. A total of 54 cubes of 150 mm x 150 mm x 150 mm were produced with 15%, 20%, 30% and 50%
of OPC/BGP respectively. Compressive strength test was performed on the
samples at 7, 14 and 28 days of curing in water. The results of the chemical analysis showed major and minor oxides of the volcanic deposit. The properties of biotite granite powder evaluated showed substantial presence of the oxides of silica, aluminium and iron with SiO2 + Al2O3 + Fe2O3 content of 90.65% by weight. The findings also showed that the material is free from carbon materials; the minor oxides identified summed up to 0.34% in value. It has a specific gravity of 2.71 and a Pozzolanic Activity Index with Portland cement of 77%. The result of soundness test was 0.82 mm expansion. The work shows that compressive strength of 84.3%,


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DEVELOPMENT OF WIND AND DIESEL GENERATOR HYBRID POWER SYSTEM MODEL FOR URBAN ELECTRIFICATION

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

ABSTRACT


The progress and prosperity of any nation depends on the amount of electrical energy consumed in the country. African countries produce and consume the lowest amount of electricity in the world. This has led to the present incessant, unstable and unreliable power supply system in African Countries which has grounded many activities and has destroyed many industrial processes. This has also increased unemployment rate and increase crime rates in the continents. Hence, there is urgent need to establish an alternative Renewable Hybrid Power Supply System which will
provide continuous, reliable and effective power supply using advance control algorithm and Maximum Power Tracking Techniques. In order to satisfy the high energy demand in residential and industrial environments, electrical energy should be reliable, affordable, effective, and sustainable. Therefore, in this research work, feasibility assessment of the study area (Iseyin Community in Oyo State, Nigeria) 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 Wind Turbine Generator (WTG) and Diesel Generator (DG) Models. Simulation of all the developed Simulink models were carried out. The 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. The need for effective and reliable power supply under the events of faults and variation of loads necessitated the need for the establishment of MPPT Techniques and Control algorithms for the HPS. The MPPT techniques and control algorithms developed in this research work provided high stability and reliability even in the events of faults and variation of loads. The 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 and generation of continuous, stable and reliable electric power for the consumers.


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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