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3 2023

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Impact of cash flow variation on project performance: contractors’ perspective

Tarawneh Sultan, Almahmoud Anoud Fawwaz, Hajjeh Hassan

Engineering Management in Production and Services

2023

Vol. 15, no. 1

73--85

This study aims to determine the impact of cash flow variation in Jordanian construction projects from contractors’ perspective and its relationship with project performance. An online questionnaire was developed and distributed to a selective sample. The respondents were project managers from contracting companies working in Jordan, around 340 construction companies. The sample frame was a form of non-probability sampling of 181 project managers. The collected data were analysed using the Statistical Package of the Social Sciences (SPSS) version 25. The study results showed a positive statistically significant effect at the significance level (α ≤0.05) of cash flow variation on project performance in Jordanian construction projects. In addition, respondents indicated a high level of agreement on the impact of cash flow variation on projects’ performance, with a mean of 4.01 and a standard deviation of .546. However, on the project performance dimensions’ level, Quality came first, with a mean of 4.11 and at a high level, followed by Safety, with a mean of 4.01 and at a high level, while Final Cost ranked third with a mean of 3.96 and at a high level. Finally, Project Final Duration ranked fourth with a mean of 3.95. The researchers recommended the necessity of more efforts for a better understanding of the importance of cash flow by contractors to schedule project activities correctly and efficiently to maintain a steady state of the project cash flow.

Hierarchical risk communication management framework for construction projects

Mansour Mohammad A., Beithou Nabil, Alsqour Moh'd, Tarawneh Sultan, Rababa’a Khalid Al, Alsaqoor Sameh, Chodakowska Ewa

Engineering Management in Production and Services

2023

Vol. 15, no. 4

104--115

Risk, as an effect of uncertainty, is associated with every human activity. Like any other industry, construction companies are eager to reduce the uncertainty of reluctant events. A well-planned risk communication system could contribute to the success of a construction project. A proper announcement protocol could be a mitigating lever for identified or unidentified risks during planning and monitoring processes. This research aims to present a risk communication management system (RCMS) for construction companies involved in large projects. The proposed model includes a step-by-step communication procedure considering the authority level within the organisational hierarchical structure. The model aims to remove the ambiguity of risk communications during the construction process under uncertain conditions. It leaves no or little room for the emergence of unplanned risks. The proposed communication structure has been implemented in GRC cladding construction projects, and the risk communication time and response have been significantly improved.

Effect of the Residential Photovoltaic Systems Evolution on Electricity and Thermal Energy Usage in Jordan

Beithou Nabil, Mansour Mohammad A., Abdellatif Nasser, Alsaqoor Sameh, Tarawneh Sultan, Jaber Ala H., Andruszkiewicz Artur, Alsqour Moh'd, Borowski Gabriel, Alahmer Ali, Siderska Julia

Advances in Science and Technology. Research Journal

2023

Vol. 17, no 3

79--87

The aim of this study was to improve the residential photovoltaic systems (RPVS) sector, using surveys as the research method. The research was carried out in four selected districts in Jordan, taking into account the largest population. The prepared sets of questionnaires covered a wide range of topics, divided into three parts and seven sections. The results showed that the highest use of solar energy for heating was in the Amman district, while in the Irbid and Zarqa districts photovoltaic (PV) system installations can potentially be more prospective because of high electricity and thermal energy usage. This study found the willingness of people to have a combined on-grid/off-grid PV systems, made by European and American manufacturers. However, those respondents were afraid of the high maintenance cost, the unclear lifespan of the system, doubtful reliability, and unclear warrantee of the PV systems.