Identifying factors of risk management for the construction industry
- Authors: Renault, Berenger Yembi , Ansary, Nazeem
- Date: 2019
- Subjects: Contraction , Factors , Model
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/296644 , uj:32324 , Citation: Renault, B.Y. & Ansary, N. 2019. Identifying factors of risk management for the construction industry. Creative Construction Conference 2018, CCC 2018, 30 June - 3 July 2018, Ljubljana, Slovenia
- Description: Abstract: Delays and cost overruns are recurrent in construction projects. Risk management (RM) has been developed to curtain risks associated with construction projects. However, there is no consensus of what factors should constitute RM for construction projects. Therefore, this paper scrutinises preceding studies on the theme of RM and establish core risk management factors (RMFs) that are indispensable to make the concept valuable in the construction industry (CI). A literature search related to RM was conducted in order to identify common RMF. It was indicated that there is still misunderstanding and disagreement over the factors that should constitute RM in construction. However, the RMFs of organisational environment, defining objectives, resource requirement, risk measurement, risk identification, risk assessment, risk response and action planning, communication, monitoring, review and continuous improvement dominate the literature. Identifying RMF that can effortlessly be understood and implemented will contribute to ameliorating the current RM status and boosting the body of knowledge.
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Exploring the integrated cost control models used in the construction industry
- Authors: Adjei, K.O. , Aigbavboa, C.O. , Thwala, Wellington Didibhuku
- Date: 2016
- Subjects: Cost control , Model , Construction industry
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/217000 , uj:21584 , Citation: Adjei, K.O., Aigbavboa, C.O. & Thwala, W.D. 2016. Exploring the integrated cost control models used in the construction industry.
- Description: Abstract: Project cost control models bring about all the techniques used in developing construction cost, cash flow forecasting and cost control. The construction industry has been unfamiliar with its characteristics and properties.This study therefore exploresthe existing integrated cost control models used in the construction industry.The study was conducted through a literatureresearch. Three different integrated cost control models used for the construction industry were selected between the years 2001 and 2013. The data used in the report is mainly qualitative and it was based on content analysis.The findings show that all the models had cost control systems. The inputs of the models were bills of quantities, resources list, activities programme, work breakdown structure and estimates. The processes of the models were managing all the resources; materials, labour, equipment and overhead costs, monitoring, controlling, reporting, decision making, corrective actions, forecasting and deadlines. Lastly the outputs of the models were project loss or profit, post evaluation and historical data kept for future use.
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A mathematical model to guide the re-opening of economies during the COVID-19 pandemic
- Authors: Habib, Noorbhai
- Date: 2020
- Subjects: Coronavirus , Lockdown , Model
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/432549 , uj:37367 , Habib, N. 2020: A mathematical model to guide the re-opening of economies during the COVID-19 pandemic.
- Description: Abstract: , Despite rigorous global containment and quarantine efforts, the incidence of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), also known as COVID-19, continues to surge, with more than 12 million laboratory-confirmed cases and over 500,000 deaths worldwide (as of 11 July 2020). Aside from the continued surge in cases and the imperatives of public health concern and saving lives, economic devastation is also mounting with a global depression now seeming inevitable. There is limited attention directed towards people who have recovered from the virus and whether this metric can be useful in guiding when the economy can be re-opened. In this paper, a simpler model is presented in order to guide various countries on the (possible) reopening of the economy (or re-opening in stages/phases) alongside risk categories and ratios. Factors that need to be considered when applying the model include the healthcare capacity in terms of the number of hospitals, beds and healthcare workers that are available to capacitate this virus. In addition, population size, physical distancing measures, socio-economic disparities, lockdown regulations in each country, and more importantly the amount and accuracy of testing conducted, is also imperative to consider. Decisions adopted by leaders around the world have the most difficult decision to make (yet), and have to weigh up on what really matters; health or wealth. It is suggested that this model be applied in a number of states/counties and countries in order to gauge the risk of their location being re-opened, by observing their total number of recoveries in proximity to total number of cases.
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A health and safety model for occupational exposure to radiofrequency fields and static magnetic fields from 1.5 and 3 T MRI scanners
- Authors: Rathebe, Phoka , Weyers, C. , Raphela, F.
- Date: 2020
- Subjects: Health and safety , Occupational exposure , Model
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/426304 , uj:36561 , Rathebe, P., Weyers, C., Raphela, F.: A health and safety model for occupational exposure to radiofrequency fields and static magnetic fields from 1.5 and 3 T MRI scanners.
- Description: Abstract: The exposure of MRI staff to SMFs and RF fields in the MRI units happen as a result of their induced movement in the MRI room during patients’ examination. Exposure to SMFs among health care workers has been associated with vertigo, nausea, increased heart rate, hypothermia and metallic taste in the mouth. The only known adverse effects associated with RF fields’ exposure include induced tissue heating, and the scientific arguments regarding non-thermal effects are inconclusive. The emission of MRI-related electromagnetic fields and exposure of workers to RF energy and SMFs can be reduced through implementation of reasonably practicable control measures. This study attempts to recommend the hierarchy of controls that can be implemented in the MRI units to reduce emissions and exposure of MRI staff to RF energy and SMFs. The controls are recommended based on exposure assessment conducted to quantify the exposure levels and self-reported priori-related and unrelated health consequences. In the MRI units, elimination is an impractical measure, hence, the implementation of engineering and administrative control measures as well as the utilisation of personal protective equipment (PPE) are recommended to mitigate exposure. Engineering controls include modification of MRI scanners to reduce emissions while administration controls include the design of work schedules and processes to be adaptive by MRI staff. PPE is recommended as a last resort and include protective equipment that are fit to reduce exposure arriving to workers. In South Africa, there is no legislation to assist in enforcing exposure limits and as a result, exposure levels are uncontrolled. The model of this kind could assist in reducing exposure levels in the MRI units and substantially reduce exposure-related effects amongst workers.
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