Browsing by Author "Amuda-Yusuf, G."

Now showing 1 - 4 of 4
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    Awareness of Factors Contributing to Sustainable Construction in Nigeria
    (Penerbit UTM Press., 2020) Amuda-Yusuf, G.; Abdulraheem, M.O.; Raheem, W.M.; Adebiyi, R.T.; Idris, S.; Eluwa, S.E.
    The need to slow down climate change and global warming has made sustainable development major issue among policy makers and world leaders. Awareness on sustainability concept among industry practitioners is crucial in influencing design, materials selection and construction methods. The aim of this study is to examine the level of awareness on key sustainability concepts and factors that influence their adoption during construction by practitioners in Nigeria. Through an online survey, 120 copies of semi-structured questionnaire were administered on built environment practitioners such as architects, engineers, quantity surveyors, and builders working in client, contracting, consulting and academia with 77% response rate. Factorial two-way ANOVA was performed to examine if there are differences in the level of awareness of factors contributing to sustainable construction among the groupings. Also, binomial logit regression analysis was adopted in predicting the factors that significantly influence adoption of sustainability concept among practitioners in construction industry. The study revealed that professionals from client organization recorded highest (3.8) mean score in terms of awareness on sustainability concept followed by those from academia (3.6), consulting (3.0) and contracting (2.2). In terms of factors that significantly influence adoption of sustainability concept during construction, findings from the study revealed that academic qualification (β =2.226, p<0.05) and type of organization (β =1.127, p<0.05) significantly influence adoption of sustainability concept during construction. Practitioners with high academic qualification and those from client organization, exhibited high level of awareness on sustainability concept, this equally influenced their adoption of key elements of sustainability (site planning, energy efficiency, water efficiency, renewable energy, resource conservation, material reuse, indoor environmental quality) during construction. The determination of the level of awareness and adoption of factors contributing to sustainable construction by practitioners will serve as guide to industry practitioners regarding issues to integrate into design and construction project from inception to completion. To improve awareness of sustainable practices in the industry, stakeholders should direct efforts towards organizing seminars, conferences and workshops centered on sustainable construction through the various professional bodies at state and local government levels.
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    Barrier Factors Affecting Adoption of Green Building Technologies in Nigeria
    (UiTM Press, Universiti Teknologi Mara, Selangor, Malaysia, 2020) Amuda-Yusuf, G.; Raheem, W.M.; Adebiyi, R.T.; Abdulraheem, M.O.; Idris, S.; Eluwa, S.E.
    Greenhouse gas emission from activities in the built environment is increasing exponentially due to increase in building operations. This study aims at determining factors that affect adoption of Green Building Technologies that normally reduce greenhouse gas emissions. To elicit relevant information, online structured questionnaire forms were administered on practitioners who have been involved in green building development in Nigeria. Mean score ranking was adopted in ranking the barriers to green building technologies, while discriminant analysis was performed to examine how organizations groups (client, consulting, contracting, academia) were distinguished on the barrier factors identified. Findings revealed that, out of the 23 barrier factors considered in this research, lack of institutions to formulate policies and set guidelines (mean score - 4.5) ranked 1st as barrier to adoption of green building technologies in Nigeria. This is closely followed by lack of information about green products (4.0), low level of awareness about sustainability issues (4.0), human resource and client knowledge, lack of knowledge about green building technologies, high cost of green products, while unavailability of sustainable materials and products ranked the lowest (2.7). Only nine factors at 0.05 level of significance entered the discriminant analysis model and emerged as variables with the most significant power in differentiating the organization groupings on the basis of perceived barriers to adoption of green building technologies. The study recommends that there should be strong political will from government, to establish institutions that formulate policies on green building technologies.
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    Barriers to Electronic Tendering Adoption by Organisations in Nigerian Construction Industry
    (Environmental Technology & Science Journal, 2019-09-12) Amuda-Yusuf, G.; Gbadamosi, S.b; Adebiyi, R. T.; Rasheed, A. S; Idris, S; Eluwa, S. E
    Tendering is an important aspect of procurement that requires the use of information technology to enhance project performance. This study has identified the barriers to e tendering adoption leaning upon Technology, Organisational, and Environment (TOE) framework and innovation diffusion theory. Googleforms was used to administer questionnaire to practitioners in construction organisations in North Central Nigeria. Confirmatory factor analysis through structural equation model was used to analyze the data. The study found that there is a positive relationship between external barrier and e-tendering External barriers factors are availability of hardware and software, government policy, poor ICT infrastructure to support e-tendering and competitive pressure from rival organisations in the industry. While internal factors include the size of firm, legal protection of online transactions security (hacking and tracking of user data) and lack of agreed standard have significant impact on -tendering. Also, IT skill of - These findings will enable policy makers and other industry players to understand the barriers to the implementation of e-tendering adoption and develop strategies to overcome them..
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    Urban Green Space Accessibility in Ilorin City, Nigeria
    (Penerbit UTM Press., 2022) Abdulraheem, M.O.; Orire, I.O.; Amuda-Yusuf, G.; Raheem, W.M.; Alade, A.K.; Chukwu, M.T.
    Urban green space (UGS) is a very important determinant of social and environmental fairness. Many developing countries are faced with a dearth of public green spaces and Ilorin in Nigeria is no exception. Despite the numerous benefits of these facilities, they are still the target of encroachment by other land uses. The study assesses green space distribution in Ilorin City, using the World Health Organization (WHO) standard indicators to evaluate its accessibility and availability. The primary instruments used are the Geographic Information System (ArcMap 10.3), Google Earth Engine (GEE), and administrative shapefiles of Ilorin West and South Local Government Areas. The results show that UGS is inadequate and only one out of the fourteen wards in the city meets the WHO 9m2green space standard and also offers 64.2 percent public access within a 300m distance radius. This result implies that Ilorin is not developing along the path of sustainability since the dearth of green space predisposes its inhabitants to immense danger. A recommendation was made for the design of a comprehensive green space master plan for the city. This shall put a check on the city's growth to foster sustainable development