scholarly journals Assessment of Risk and Uncertainty Factors Inherent in Nigerian Highway Project Using Analytical Hierarchical Process

2022 ◽  
Vol 4 (1) ◽  
pp. 34-51
Author(s):  
Oluyemi-Ayibiowu B.D. ◽  
Adebote A.P. ◽  
Falola K.E.
Keyword(s):  
Risk Factors ◽  
Construction Projects ◽  
Process Model ◽  
Rating Scale ◽  
Highway Construction ◽  
Risk And Uncertainty ◽  
Analytical Hierarchical Process ◽  
Pairwise Comparison Matrix ◽  
Uncertainty Factors ◽  
Highway Project

The study presents a framework through which risk and uncertainties in Nigeria highway projects can be appraised using the analytical hierarchical process model. Pairwise comparison matrix was performed on eleven (11) risk and uncertainty factors that affect highway project performance through a questionnaire survey conducted among two hundred and four (204) respondents, which involved various stakeholders in the highway construction industry using Saaty’s AHP rating scale. The relative weights (significance/impact level) of each of the highway risk factors were estimated during the AHP model development. The results in descending order of risk factors priorities are Standard & Regulations (S&R), Construction (C), Project Staff (PS), Project Sponsor (PSp), Design (D), Project Finance (PF), Economic (E), Equipment (EQ), Environmental & Geotechnical (En&G), Site Location (SL) and Subcontractor (S) with impact levels of 16.6%, 14.2%, 13.9%, 13%, 12.7%, 12.2%, 10.8%, 9.8%, 6.2%, 4.2%, and 3.8% respectively. The model was validated using the statistical consistency test, with the model showing a consistency ratio equal to 0.1. The model was then applied to five (5) highway construction projects which had been constructed to predict the ones with the most and least risks. The result was in tandem with that which was given by the project managers from experiences on the project. This study showed that the Analytical Hierarchical Process (AHP) decision support model can effectively be used for risk assessment and prioritization of highway construction projects for efficient resource utilization in Nigeria.

scholarly journals Practitioners’ Perception on the Critical Determinant of Uncertainty Factors that Influence Transaction Cost in Highway Construction Projects

sjesr ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 528-538
Author(s):  
Zaigham Ali ◽  
Dr. Ammar Hussain ◽  
Mehfooz Ullah
Keyword(s):  
Public Sector ◽  
Transaction Cost ◽  
Structural Equation ◽  
Construction Projects ◽  
Highway Construction ◽  
Partial Least Square ◽  
Least Square ◽  
Equation Modeling ◽  
Critical Determinant ◽  
Uncertainty Factors

The purpose of this paper is to ascertain practitioners’ perception of the critical determinants of uncertainty factors on the transaction cost (TC) in highway construction projects. A survey questionnaire is used to collect data from the 230 practitioners of public-sector construction organizations in Pakistan to identify those factors. The partial least square structural equation modeling (PLS-SEM) is tested on the collected data. This research investigates that TC borne by the owner can be reduced when the owner minimizes inherent uncertainties. To reduce uncertainty, the owner needs to ensure a good relationship with the contracting parties, make a timely payment to the contractor, complete work scope to reduce change orders, enhancing the owner’s experience in similar projects which increase the organizational efficiency hence reduce in TC. This empirical study was conducted from an organizational perspective which helps the project owners to overcome the issues under uncertainty that influence the Transaction cost (TC) in highway construction projects in developing countries. It demonstrates that the uncertainty that causes to enhance the TC is due to the uncertainty of the owner’s behavior. This study provides a guideline for the practitioners of the public sector construction industry to bring cost efficiency under the uncertain circumstance.

scholarly journals Prevalence of Psychological Distress and Its Risk Factors in Patients with Primary Bone and Soft Tissue Tumors

Healthcare ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 566
Author(s):  
Masato Ise ◽  
Eiji Nakata ◽  
Yoshimi Katayama ◽  
Masanori Hamada ◽  
Toshiyuki Kunisada ◽  
...  
Keyword(s):  
Risk Factors ◽  
Psychological Distress ◽  
Soft Tissue ◽  
Rating Scale ◽  
Numeric Rating Scale ◽  
Soft Tissue Tumors ◽  
Number Of Patients ◽  
Primary Bone ◽  
Associated Risk Factors ◽  
Numeric Rating

Psychological distress is common in patients with soft tissue and bone tumors. We first investigated its frequency and the associated risk factors in patients with pre-operative bone and soft tissue tumors. Participants included 298 patients with bone and soft tissue tumors who underwent surgery in our institution between 2015 and 2020. Psychological distress was evaluated by the Distress and Impact Thermometer (DIT) that consists of two types of questions (questions about the severity of the patient’s distress (DIT-D) and its impact (DIT-I)). We used a cut-off point of 4 on the DIT-D and 3 on the DIT-I for screening patients with psychological distress. We therefore investigated: (1) the prevalence of psychological distress as assessed with DIT or distress thermometer (DT), which can be decided by DIT-D ≥ 4, (2) what are the risk factors for the prevalence of psychological distress, and (3) what is the number of patients who consulted a psychiatrist for psychological distress in patients with pre-operative bone and soft tissue tumors. With DIT and DT, we identified 64 patients (21%) and 95 patients (32%), respectively, with psychological distress. Multivariate logistic regression revealed that older age, sex (female), malignancy (malignant or intermediate tumor), a lower Barthel Index, and higher numeric rating scale were risk factors for psychological distress. Two patients (3%) consulted a psychiatrist after surgery. In conclusion, careful attention to psychological distress is needed, especially for female patients, older patients, and those with malignant soft or bone tissue tumors who have more than moderate pain.

scholarly journals Identification of geodetic risk factors occurring at the construction project preparation stage

2019 ◽  
Vol 9 (1) ◽  
pp. 14-17 ◽  
Author(s):  
Magdalena Kowacka ◽  
Dariusz Skorupka ◽  
Artur Duchaczek ◽  
Paweł Zagrodnik
Keyword(s):  
Risk Factors ◽  
Construction Projects ◽  
Expert Knowledge ◽  
Construction Project ◽  
Road Construction ◽  
Construction Process ◽  
The Road ◽  
Initial Stage ◽  
Preparation Stage

AbstractThe work contains information on the implementation of surveying works in the road construction process. The aim of the research was to identify geodetic risk factors occurring at the stage of preparation of a construction project, the presence of which can greatly disrupt the undertaking such as the road construction. The research was carried out on the basis of expert knowledge, documentation obtained from various road construction projects and the analysis of disturbances at the initial stage of works.

scholarly journals Identification and Assessment of Uncertainty Factors that Influence the Transaction Cost in Public Sector Construction Projects in Pakistan

Buildings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 157 ◽  
Author(s):  
Zaigham Ali ◽  
Fangwei Zhu ◽  
Shahid Hussain
Keyword(s):  
Transaction Cost ◽  
Construction Projects ◽  
Critical Role ◽  
Environmental Groups ◽  
Uncertainty Factors ◽  
Competitive Tendering ◽  
Importance Index ◽  
Force Majeure ◽  
Internal Sources ◽  
The Impact

Like other kinds of projects, construction projects are exposed to uncertainty, which plays a critical role in determining the transaction cost (TC). This study explores the uncertainty factors that are associated with construction projects that substantially influence the TC. To obtain the opinions of construction professionals, a survey questionnaire was developed after identifying 30 relevant causes of uncertainty from the literature. A survey of 216 professionals was conducted in Pakistan, and the relative importance index (RII) was used to prioritize the significant uncertainty factors that escalate the TC. Based on the responses from various construction professionals, this study determined that the most significant uncertainty factors that influence TC are: competitive tendering, incomplete design and specifications, late payments, conflict management, delayed possession of sites, force majeure, and work acceleration. This study also compared and analyzed the views of project managers and consultants and found that uncertainty from internal sources has a more significant influence on TC than that from external sources. The political and environmental groups do not contribute much escalating the TC. However, uncertainties that arise from the commercial, project site, and technical groups are more of an influence on TC. This research helps practitioners and professionals to adopt integrative systems in most uncertain situations proactively to find opportunities in volatile markets to reduce the impact of uncertainty on the total project cost.

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