School of Environmental Technology (SET)
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School of Environmental Technology (SET)
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Item A Remote-Sensing Based Assessment of Seasonal Variation in Vegetation Quality and Productivity in Nimbia Forest(Civil and Environmental Research, 2015) Ifeanyi C. Onuigbo, Joseph O. Odumosu, Ekundayo. A. Adesina, Nanpon. Zitta, Oluibukun G. Ajayi, Abdullahi A. KutaAgriculture plays a vital role in the growth and sustainability of developing countries, such as those in sub-Saharan Africa. Therefore, there is a need to monitor and assess the changes taking place in vegetation quality and productivity. The conventional ground survey method has proved to be highly tedious, laborious, and grossly limited, especially when large and densely forested regions are concerned. This paper presents a remote sensing-based approach as a real-time technology to determine the effect and extent of water loss caused by seasons on vegetation quality in Nimbia forest, Kaduna State. ENVI 4.7, ArcGIS 10.0, and Global Mapper Software were used, and a discrepancy of about 45% in the quality of vegetation has been observed between seasons in the region under study.Item Evaluation of the various orthometric height systems and the Nigerian scenario – A case study of Lagos State(Journal of King Saud University – Engineering Sciences, 2015-09-12) J.O. Odumosu, O.G. Ajayi, F.F. Idowu, E.A. AdesinaThough considered the easiest in 3-Dimensional Point Positioning, the choice of a height system, especially in areas with spatially vast land mass, is rather a complicated choice. Orthometric heights are naturally and fully referenced to the actual Earth gravity field, but laborious to compute considering the required approximations of gravity variation along the plumb line from the surface to the geoid. Normal heights, on the other hand, are less laborious to compute and do not require actual gravity observations. Unfortunately, natural height systems are the only systems that can efficiently predict fluid flows. This paper has therefore examined the theory and practical possibility of replacing the use of Helmert Orthometric Heights with Normal Orthometric Heights within Lagos State. A maximum height discrepancy of 1 mm was obtained in the comparison of both systems, and thus their replaceability was found suitable to within 3rd-order geodetic accuracy.Item Using a GIS-Based Network Analysis to Determine Urban Greenspace Accessibility for Different Socio-Economic Groups, Specifically Related to Deprivation in Leicester, UK(Civil and Environmental Research, 2014) Abdullahi Ahmed Kuta, Joseph Olayemi Odumosu, Oluibukun Gbenga Ajayi, Nanpon Zitta, Hassan A. Samail-Ija, Ekundayo. A. AdesinaAccessibility to green space by different socio-economic groups, specifically related to deprivation in the English city of Leicester, was done using Geographical Information System (GIS) network analysis. The result was compared with the ANGSt standard, which provided the benchmark for assessing green space in the UK. The result shows that a greater percentage of socio-economically deprived groups in Leicester lack access to green space within 300m of their homes. For distances of 2000m and 5000m, 70% have access. This work has explored the use of GIS network analysis to assess the accessibility of greenspace among socio-economically deprived groups, which will help those saddled with the responsibility of providing greenspace in carrying out their duties to ensure equity. This analysis can be extended to other groups in Leicester, e.g., the handicapped, elderly, etc, to assess how accessible Greenspace is to them.Item Optimal Location Determination of Some Public Facilities within Minna Metropolis: A Geospatial Technique Approach(Journal of Geographic Information System, 2015-12-30) Abdulkareem A. Umar, Matthew O. Adepoju, Ekundayo A. Adesina, Michael O. BamgboseTheoretical frameworks used to explain the location of services include central place theory, aspects of industrial location theory, and spatial diffusion theory. They are all described as normative theories that optimize concerning defined criteria operating in prescribed environmental conditions (Rushton, 1979). However, recent advancement in geospatial technologies has led to several applications in geographically orientated challenges, hence, the adoption of an effective decision tool like Geographic Information System (GIS), high resolution products of satellite remote sensing as well as the Global Positioning System (GPS) in solving the rather challenging task of optimal location for facilities concerning necessary criteria. Minna metropolis is being affected adversely by the problem of the appropriate location of public facilities. These facilities are either too far from their market zone or are too congested in a particular location, and in some cases, political considerations to the siting of these facilities without considering the necessary criteria for demands and public interest. The study is an investigation into the “optimal determination of the locations of some public facilities in the Minna metropolis of Niger State, using geospatial techniques”. The fusion of remote sensing, geographic information systems (GIS), and GPS techniques was explored. The geodata base of existing facilities was created, and Euclidean-distance geometry is used to spatially analyze the appropriate locations about the set of standard criteria. The results showed the haphazard and uncontrolled pattern of development of school locations. However, petrol stations met the evaluated criteria and optimal location indexes.Item Optimization of Fire Stations Services in Minna Metropolis using Maximum Covering Location Model (MCLM)(Journal of Applied Sciences & Environmental Sustainability, 2017-07-04) E.A. Adesina, J.O. Odumosu, O.O. Morenikeji, E. Umoru, A.O. Ayokanmbi, E.B. OgunbodeThe study is aimed at determining the optimal locations for the present geographical location of fire stations service in Minna Metropolis considering the distance and benefits of the users to the facility or if there is needs for an additional fire stations service to be added using Maximum Covering Location Model (MCLM). The existing fire stations service in the study area were three (3) which served as facilities (Supply) while 2012 and 2014 number of fire incidences and the population were used as the centroid points for the wards and also utilized as demand points which are twenty-five (25) in the study area. The impedance time was set to be 5-minutes and 2000 meter radius was used as a distance factor. After the assessment of the coverage of the existing fire stations service using (MCLM), It was discovered that two wards were uncovered (based on the imposed time constraint) while nineteen (19) wards were uncovered based on the distance factor. Thus, the three fire stations service could not guarantee total coverage in the study area. Therefore, recommendations was made for the location of five (5) new fires stands to serve the uncovered wards in the study areas in case of emergency.Item Bathymetric Survey and Volumetric Analysis for Sustainable Management Case Study of Suleja Dam, Niger State, Nigeria(Journal of Environment and Earth Science, 2014) H. A. Samaila – Ija, O.G. Ajayi, N. Zitta, J.O. Odumosu, A.A. Kuta, E. A. Adesina. P. IbrahimOcean floor and the shape of the shoreline are major influencers of the changes in tidal propagation. Bathymetry; a survey operation aimed at determining the nature of the underwater level and topography of a water body’s bed level plays a cogent role in the determination of both the shape of the shoreline and the ocean floor thereby aiding the monitoring and spatio-temporal modelling of the changes in tidal propagation as much as it ensures the availability of hydro-data which is the foundation of a Maritime Database Management System (MDBMS). This work presents the findings of the bathymetric survey and volumetric analysis of Suleja Dam located in the North central Region of Nigeria. The Differential Global Positioning System receiver (DGPS) (Promark 3), automatic level, echomap 50s in conjunction with the engine boat were used during this research. The data acquired was processed using the GNSS solutions software with the chart plotted in surfer 9 software environment. The surface area of the dam was discovered to be 24.64ha less than the designed area. Also the volume of water was found to be 3.6 x 106m3 in contrast to the design volume of 34.7x106m3. It was also observed that the lowest water depth was 0.56m and the highest water depth was 22.06m, therefore a difference of 5.94m was obtained as against the initial construction depth of 28.00m. The undulating nature of the reservoir bed and the difference in volume of water and surface area covered by the dam are pointers and clear indications of sedimentation and siltation process going on in the dam.Item Analysis of spatial distribution of worship centres using maximum location model in part of Minna, Niger state, Nigeria(Journal of Advanced Research Design, 2017) E. A. Adesina, J. O. Odumosu, O. O. Morenikeji, O. G. Ajayi, E. S. Onuche, K. H. BabalolaThe research uses the Maxisum Location Model to determining optimal location of existing worship centres in part of Minna Metropolis with the primary goal of locate p facilities such that the total demand-weighted distance between demand nodes and the facilities to which they are assigned is maximized (i.e. This model was adopted to solve the problem of noise generated from the sound-speaker) used by these worship centres during their services to the nearest neighborhood using 500meters as a distance factor. Since there are no restricted rules governing siting of worship centres it may not be located everywhere optimally, therefore, more areas were affected when a distance less than 500meters criteria was used while some areas are farther from the noise based on their location at optimal distance of 500meters and above. Spatial analysis was carried out on the sufficiency or otherwise of churches and mosques within the study area. Multi-criteria queries were carried out and results revealed that some worship centers need to be relocated because the area they were are too congested and also generate more noise to the environment through sound-speaker used. Recommendations were made to predict future deficiencies if relevant government agencies fail to provide more rules and regulations in siting of worship centers as the population increasesItem Construction Programmes and Programming: A Critical Review(Emerald Reach Proceedings Series, 2019-05) Olubajo, Oluseun Olukemi; Hughes, Will; Schweber, LibbyPurpose–The purpose of the study is to explore the dominant ideas in research on the management of time in construction. The focus of research has been to improve techniques for optimising the timing and sequence of activities. Design/Methodology/Approach– A critical review of research on construction time management, challenging the typical focus. We examine the assumptions different authors make, underline the limitations of the dominant research approaches and examine the prospects for developing a new approach to researching these issues. Findings– The dominant approach in literature focuses on unique activity traits in construction planning and measurable patterns between time-related variables. This assumes that time in construction can be managed by changing the way activities are calculated. These approaches have not been correlated with improvement in performance. Social practice theory may help to explain how programmes figure as one of many objects used during construction. Research Limitations/Implications– The focus is on reviewing indicative literature from key journals in construction management. The implication is that research is needed about how such documents are used in practice, which goes further than optimising plans in theory. Practical Implications– Future research could focus on understanding the context of construction planning practice and shift the debate from a focus on optimisation to practice. Originality/Value– An interpretivist approach with a focus on how tools such as planning documents are used on site. Social practice theory may provide a clearer explanation of the place of construction planning within the practice of construction management. This could provide solutions that deal effectively with stakeholder expectations around timely completion of construction projects.Item Factors Affecting Project Planning Efforts in Akwa-Ibom State(School of Environmental Technology International Conference 2016, Federal University of Technology Minna, Niger State, Nigeria., 2016-05-12) Olubajo, Oluseun Olukemi; Idoro, Godwin; Jimoh, Richard AjayiAll construction projects are unique and the amount of effort invested into planning activities will depend on the nature or the character of that project; as no two construction projects are identical. This prompted an investigation to evaluate the factors affecting the efforts invested into project planning activities at the pre-contract stage in Akwa Ibom state. The aim of the study is to evaluate the factors affecting efforts invested in project planning amongst selected consultants. A field survey involving 92 project consultants was adopted to achieve this objective. Data was collected using structured questionnaires and analysed using mean and relative importance index. It was discovered that the demands of the client, the clients budget and the construction method to be adopted ranked highest amongst others as having more impact on the measure of efforts invested in planning and indirectly on the performance of the construction Projects. The study suggests that all stakeholders collaborate more frequently by building stronger partnerships and aligning all actors as an integrated supply chain.Item Strategic Management Initiatives in Small and Medium Scale Construction Companies in the Federal Capital Territory, Abuja(School of Environmental Technology, Federal University of Technology Minna. PMB 65, Minna, Niger State Nigeria, 2018-04-12) Olubajo, Oluseun Olukemi; Olawuyi, Babatunde JamesSmall and medium scale construction companies’ account for the bulk of Nigeria’s construction industry and the impact of this sector on the growth of the national economy is seminal. The practice of strategic management in small and medium scale companies is low, however this does not imply that these firms lack intent or initiatives to grow and compete. It is on this grounds that this study seeks to examine the initiatives of small and medium construction companies and their performance in the Federal Capital Territory Abuja. The objectives are to examine the competitive strategies adopted by Small and Medium Construction Companies, to evaluate the dynamics involved in initiating and implementing strategic intentions and to determine its relationships with their performance. The study adopted a survey design approach using questionnaire to gathering data from supply chain participants involved in 50 construction projects sites. The study data was analysed using descriptive statistics, mean item score and correlation test. Findings revealed that differentiation strategy is the most highly adopted competitive strategy by small and medium construction companies and the formation of strategic alliances improves the delivery of business objectives as a supply chain strategy. A competent the work force is essential for the success of any organisation and a significant correlation exist between the strategic management initiatives of small and medium and organizational performance. The study recommends the harmonisation of company efforts in small and medium scale organizations in line with strategic objectives for improved performance and growth of developing economies.