scholarly journals Impact of Risk Factors on Construction Projects’ Completion Cost in Nigeria

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Z. H Ishaq
Keyword(s):  
Risk Factors ◽  
Construction Projects ◽  
Sampling Technique ◽  
Related Factors ◽  
Cash Flow Management ◽  
Project Completion ◽  
Contract Administration ◽  
Potential Risks ◽  
The Impact ◽  
Cost Of Construction

Construction projects are prone to a number of risks due to their complexity, dynamic nature, capital intensive nature and involvement of many stakeholders. These risks if left unmanaged will negatively influence the completion cost and other primary objectives of construction projects. Numerous studies have been conducted globally to determine the potential risks that negatively impacts construction projects; however, the risks aren’t alike across all the regions and the potential degree of impact may changes with time. This study assessed the impact of risk factors on completion cost of construction projects in Nigeria. Data was collected using structured questionnaires administered to 192 construction practitioners using convenience sampling technique. Descriptive statistics (mean and standard deviation) were used to analyse the data. The study found ‘inadequate cost estimate’ (MS = 4.39), ‘risk incurred due to bribery and corruption’ (4.30), ‘increase in prices of materials’ (4.25), ‘increase in cost of labour’’ (4.11), ‘poor cash flow management’ (4.04) ‘mistakes/errors in design’ (4.04) and ‘mistakes during construction’ to be the topmost risk factors that impact on project completion cost. The study concludes that ‘economic’, ‘financial’ and ‘contract administration and project management’ related factors group are those with high impact on project completion cost.

scholarly journals The Impact of Intervention-Related Risk Factors on the Risk of Ventilator-Associated Pneumonia Is High in a Neurosurgical Intensive Care Unit

2020 ◽  
Vol 41 (S1) ◽  
pp. s407-s409
Author(s):  
Ksenia Ershova ◽  
Oleg Khomenko ◽  
Olga Ershova ◽  
Ivan Savin ◽  
Natalia Kurdumova ◽  
...  
Keyword(s):  
Risk Factors ◽  
Mechanical Ventilation ◽  
Negative Slope ◽  
Infection Prevention And Control ◽  
Ventilator Associated Pneumonia ◽  
Related Factors ◽  
Icu Patients ◽  
The Impact ◽  
Adf Test ◽  
Over Time

Background: Ventilator-associated pneumonia (VAP) represents the highest burden among all healthcare-associated infections (HAIs), with a particularly high rate in patients in neurosurgical ICUs. Numerous VAP risk factors have been identified to provide a basis for preventive measures. However, the impact of individual factors on the risk of VAP is unclear. The goal of this study was to evaluate the dynamics of various VAP risk factors given the continuously declining prevalence of VAP in our neurosurgical ICU. Methods: This prospective cohort unit-based study included neurosurgical patients who stayed in the ICU >48 consecutive hours in 2011 through 2018. The infection prevention and control (IPC) program was implemented in 2010 and underwent changes to adopt best practices over time. We used a 2008 CDC definition for VAP. The dynamics of VAP risk factors was considered a time series and was checked for stationarity using theAugmented Dickey-Fuller test (ADF) test. The data were censored when a risk factor was present during and after VAP episodes. Results: In total, 2,957 ICU patients were included in the study, 476 of whom had VAP. Average annual prevalence of VAP decreased from 15.8 per 100 ICU patients in 2011 to 9.5 per 100 ICU patients in 2018 (Welch t test P value = 7.7e-16). The fitted linear model showed negative slope (Fig. 1). During a study period we observed substantial changes in some risk factors and no changes in others. Namely, we detected a decrease in the use of anxiolytics and antibiotics, decreased days on mechanical ventilation, and a lower rate of intestinal dysfunction, all of which were nonstationary processes with a declining trend (ADF testP > .05) (Fig. 2). However, there were no changes over time in such factors as average age, comorbidity index, level of consciousness, gender, and proportion of patients with brain trauma (Fig. 2). Conclusions: Our evidence-based IPC program was effective in lowering the prevalence of VAP and demonstrated which individual measures contributed to this improvement. By following the dynamics of known VAP risk factors over time, we found that their association with declining VAP prevalence varies significantly. Intervention-related factors (ie, use of antibiotics, anxiolytics and mechanical ventilation, and a rate of intestinal dysfunction) demonstrated significant reduction, and patient-related factors (ie, age, sex, comorbidity, etc) remained unchanged. Thus, according to the discriminative model, the intervention-related factors contributed more to the overall risk of VAP than did patient-related factors, and their reduction was associated with a decrease in VAP prevalence in our neurosurgical ICU.Funding: NoneDisclosures: None

scholarly journals Identification and Qualitative Evaluation of Risk Factors in the Construction Projects in Iraq

2021 ◽  
Vol 14 (2) ◽  
pp. 91-101
Author(s):  
Noor Aletby ◽  
Hafeth Ibrahim
Keyword(s):  
Risk Factors ◽  
Risk Management ◽  
Construction Projects ◽  
Qualitative Evaluation ◽  
Qualitative Assessment ◽  
Management Process ◽  
Risk Management Process ◽  
Questionnaire Method ◽  
High Level ◽  
The Impact

Construction projects in Iraq face many dangers that cause exceeding the estimated cost of the project and not completing the project on time, and since the risk management process in construction projects is of great importance in controlling and reducing the impact of risks in construction projects, so it is necessary to identify these risks and evaluate them correctly in order to increase accuracy and the health of the subsequent stages of the risk management process in construction projects. This paper aims to identify the most important risks in construction projects in Iraq and to conduct a qualitative assessment of the identified risks and arrange them according to their importance. The researcher adopted the questionnaire method as a tool to determine the risks and used the technique of probability and effect matrix to conduct the qualitative assessment of the identified risks. The study found that there are 48 risk factors that constitute the most dangerous factor in construction projects in Iraq, and 10 of the determining factors were within the high level of risk, and at the forefront of which was the inability of the owner to finance the project.

scholarly journals ASSESSING THE FACTORS CAUSING PROJECT COMPLETION DELAYS IN THE CONSTRUCTION SECTOR OF OMAN USING SEM-PLS

2020 ◽  
Vol 8 (3) ◽  
pp. 900-912 ◽  
Author(s):  
Iman Suleiman Al Maktoumi ◽  
Firdouse Rahman Khan ◽  
Ahmed Rashid Suwied Al Maktoumi
Keyword(s):  
Structural Equation ◽  
Construction Projects ◽  
Goodness Of Fit ◽  
Raw Materials ◽  
Equation Modeling ◽  
Related Factors ◽  
Formative Measurement ◽  
Project Completion ◽  
Measurement Models ◽  
Process Allocation

Purpose: The objectives of the study were to investigate the causes of the delays to analyze the factors causing the construction delay in Oman and to investigate the effects of such delays. Design/methodology/approach: To carry out this study 210 samples were collected through a well-defined questionnaire from the construction stakeholders viz. the consultants, contractors, and the clients who were selected on a random sampling basis. Smart PLS for Structural Equation Modeling (SEM) technique was used to analyze the data to obtain the formative measurement models, the structured model, and the goodness of fit. Findings: The results of the study reveal that the client-related factors, equipment-related factors, and material related factors have a significant impact on the completion delay in construction projects. The findings of the study also revealed that the Client related factors were – Delay in providing services, Delayed decision-making process, Allocation of insufficient time. Equipment related factors were – Existing low productive equipment, Unskillful Equipment operator, Breakdown of equipment and Outdated equipment; Material related factors were – Delay in supply of raw materials, Non-availability of materials, Change of materials during construction, Non-availability of accessories and Damaged materials. Research limitations/Implications: The present study covers the stakeholders of the construction projects from selected regions only. The future studies can be extended to other projects and other regions as well. Social implications: The study suggested that the clients’ cooperation especially in providing the contractors with the necessary equipment, facilities, and sufficient time will avoid such delays of the construction projects in Oman. Originality/Value: Only very few have examined the completion delay of the construction projects in Oman using SEM-PLS and it is a first-hand study of its kind and the results will be useful to the stakeholders.

scholarly journals A Novel Method of Developing Construction Projects Schedule under Rework Scenarios

2019 ◽  
Vol 11 (20) ◽  
pp. 5710
Author(s):  
Guofeng Ma ◽  
Shan Jiang ◽  
Tiancheng Zhu ◽  
Jianyao Jia
Keyword(s):  
Construction Projects ◽  
Development Project ◽  
Real Estate Development ◽  
Design Structure Matrix ◽  
Project Duration ◽  
Project Completion ◽  
Design Structure ◽  
Novel Method ◽  
The Impact ◽  
Critical Chain

Construction projects have faced serious schedule delays caused by rework risks. However, it appears that traditional methods are of limited value in developing applicable project schedules. This study presents an analysis on construction projects schedule development under rework scenarios by a novel method named the improved critical chain design structure matrix (CCDSM). Research data are collected from a real estate development project in China. As a result, predictions of project completion duration and probability have been made. A reliable schedule considering information interactions has been developed and visualized. Rework impact areas of activities have been examined to quantitatively record the impact on project duration. To meet different demands, the method generates two more schedules setting different rework buffers. Furthermore, these activities have the potential of causing rework and have been quantified based on the calculation of two criticalities, providing an identification of rework-intensive works that should be payed close importance to, which have not be realized by previous methods. The results proved the feasibility and effectiveness of this method in developing a schedule for construction projects disturbed by rework, helping practitioners adopt measures to avoid rework-caused schedule delays and achieve sustainable development of such projects.

scholarly journals Deep brain stimulation hardware–related infections: 10-year experience at a single institution

2019 ◽  
Vol 130 (2) ◽  
pp. 629-638 ◽  
Author(s):  
Kingsley O. Abode-Iyamah ◽  
Hsiu-Yin Chiang ◽  
Royce W. Woodroffe ◽  
Brian Park ◽  
Francis J. Jareczek ◽  
...  
Keyword(s):  
Risk Factors ◽  
Deep Brain Stimulation ◽  
Brain Stimulation ◽  
Single Institution ◽  
Chi Square ◽  
Related Factors ◽  
Exact Test ◽  
Vancomycin Powder ◽  
The Impact ◽  
Deep Brain

OBJECTIVEDeep brain stimulation is an effective surgical treatment for managing some neurological and psychiatric disorders. Infection related to the deep brain stimulator (DBS) hardware causes significant morbidity: hardware explantation may be required; initial disease symptoms such as tremor, rigidity, and bradykinesia may recur; and the medication requirements for adequate disease management may increase. These morbidities are of particular concern given that published DBS-related infection rates have been as high as 23%. To date, however, the key risk factors for and the potential preventive measures against these infections remain largely uncharacterized. In this study, the authors endeavored to identify possible risk factors for DBS-related infection and analyze the efficacy of prophylactic intrawound vancomycin powder (VP).METHODSThe authors performed a retrospective cohort study of patients who had undergone primary DBS implantation at a single institution in the period from December 2005 through September 2015 to identify possible risk factors for surgical site infection (SSI) and to assess the impact of perioperative (before, during, and after surgery) prophylactic antibiotics on the SSI rate. They also evaluated the effect of a change in the National Healthcare Safety Network’s definition of SSI on the number of infections detected. Statistical analyses were performed using the 2-sample t-test, the Wilcoxon rank-sum test, the chi-square test, Fisher’s exact test, or logistic regression, as appropriate for the variables examined.RESULTSFour hundred sixty-four electrodes were placed in 242 adults during 245 primary procedures over approximately 10.5 years; most patients underwent bilateral electrode implantation. Among the 245 procedures, 9 SSIs (3.7%) occurred within 90 days and 16 (6.5%) occurred within 1 year of DBS placement. Gram-positive bacteria were the most common etiological agents. Most patient- and procedure-related characteristics did not differ between those who had acquired an SSI and those who had not. The rate of SSIs among patients who had received intrawound VP was only 3.3% compared with 9.7% among those who had not received topical VP (OR 0.32, 95% CI 0.10–1.02, p = 0.04). After controlling for patient sex, the association between VP and decreased SSI risk did not reach the predetermined level of significance (adjusted OR 0.32, 95% CI 0.10–1.03, p = 0.06). The SSI rates were similar after staged and unstaged implantations.CONCLUSIONSWhile most patient-related and procedure-related factors assessed in this study were not associated with the risk for an SSI, the data did suggest that intrawound VP may help to reduce the SSI risk after DBS implantation. Furthermore, given the implications of SSI after DBS surgery and the frequency of infections occurring more than 90 days after implantation, continued follow-up for at least 1 year after such a procedure is prudent to establish the true burden of these infections and to properly treat them when they do occur.

scholarly journals CASH FLOW FORECASTING WITH RISK CONSIDERATION USING BAYESIAN BELIEF NETWORKS (BBNS)

2017 ◽  
Vol 23 (8) ◽  
pp. 1045-1059 ◽  
Author(s):  
Mostafa KHANZADI ◽  
Ehsan ESHTEHARDIAN ◽  
Mahdiyar MOKHLESPOUR ESFAHANI
Keyword(s):  
Risk Factors ◽  
Cash Flow ◽  
Construction Projects ◽  
Bayesian Belief Networks ◽  
Influence Diagrams ◽  
Belief Networks ◽  
Cash Flow Management ◽  
Construction Companies ◽  
Cash Flow Forecasting

Cash-flow management is very important for contractors given that inadequate cash resources typically are the main causes for bankruptcy of construction companies. In comparison to most other industries, the construction industry is severely plagued by risk, and the success of construction projects usually depends on valuating all risks. However, conventional methods suggested by extant research on cash flow forecasting do not consider comprehensive identifica­tion of risk factors, interactions between the factors, and simultaneous occurrences of the factors. This study introduced a simple and appropriate probabilistic cash flow forecasting model using Bayesian Belief Networks (BBNs) to avoid bankruptcy of contractors by considering influence diagrams and risk factors that affect a project. Workability and reli­ability of the proposed approach was tested on an important building construction project in Iran as a real case study, and the results indicated that the model performed well.

scholarly journals IMPACT OF COVID 19 PANDEMIC ON PROJECT PORTFOLIO MANAGEMENT-A CASE STUDY ON CONSTRUCTION INDUSTRY IN SOUTHERN INDIA

2021 ◽  
Vol 12 (2) ◽  
pp. 168-178
Author(s):  
Ajay Krishnan ◽  
Ajithkumar S ◽  
Manishankar G ◽  
Upendra K ◽  
Kabilan A ◽  
...  
Keyword(s):  
Risk Factors ◽  
Real Estate ◽  
Construction Industry ◽  
Portfolio Management ◽  
Construction Projects ◽  
Project Portfolio ◽  
Project Portfolio Management ◽  
Management Tools ◽  
Real Estate Sector ◽  
The Impact

In India, Project Portfolio Management (PPM) is in practice as a tool for prioritizing and managing real estate projects in construction organizations. But due to insufficient funding, improper judgment of experts during the crisis situation, the selection of optimal project portfolio prototype can be viewed as a risk based decision making process involving various risk factors. The objective of this study is to analyze the importance of project portfolio management and the risks associated with it in the construction industry taking into account the impact of novel corona virus COVID 19. This research identifies the adoption of more consistent project governance, risk management techniques and way more careful project portfolio management as the core area of study. A conceptual framework for Project Portfolio Management is also designed after analyzing various parameters of Project Portfolio Management of construction industry with the help of Bayesian framework. The key motive for undertaking this part of examination on real estate sector of Indian construction industry in southern part of India to reduce the impacts and increase the return on investment from the projects by mitigating the effect of risk factors associated in the projects.  Project Portfolio Management tools and techniques are very useful for managing multiple construction projects.

scholarly journals Prevalence of PTSD Symptoms Among Psychiatric Patients During the COVID-19 Pandemic

2021 ◽  
Author(s):  
Lirong Tang ◽  
Yue Gao ◽  
Shuangyi Qi ◽  
Jie Cui ◽  
Li Zhou ◽  
...  
Keyword(s):  
Risk Factors ◽  
Psychiatric Symptoms ◽  
Psychiatric Patients ◽  
Depression Scale ◽  
Psychiatric Hospitals ◽  
Health Concern ◽  
Ptsd Symptoms ◽  
Related Factors ◽  
Event Scale ◽  
The Impact

Abstract Background: The outbreak of the COVID-19 pandemic has caused extensive public health concern and posed great challenges to the medical services, including the mental health concern for psychiatric patients who were one of neglected groups. The current study aimed to assess the prevalence and risk factors of post-traumatic stress disorder (PTSD) symptoms among psychiatric patients in China during the pandemic. Method: Self-reported questionnaires were distributed to psychiatric patients in several psychiatric hospitals in Beijing China from 28 April to 30 May 2020. The socio-demographic information and psychiatric symptoms such as PTSD, anxiety and depressive symptoms were collected by using The Impact of Event Scale- Revised (IES-R), the 7-item Generalized Anxiety Disorder Scale (GAD-7) and the 9-item Patient Health Questionnaire depression scale (PHQ-9). Multivariate regression was used to analysis the related factors for PTSD symptoms. Results: 1,055 psychiatric patients were included in the final sample. The prevalence of PTSD symptoms was 41.3%. Risk factors for PTSD symptoms and its subscales included old age, high risk perception, symptoms of anxiety, symptoms of depression. Conclusions: The prevalence of PTSD symptoms is high among psychiatric patients during the COVID-19 pandemic in China. We call for more concern and PTSD interventions to relieve the psychological stress of psychiatric patients during the pandemic.

The Analysis of the Engineering Change Impact on Project Cost Based on the Quantities Bill Valuation

2013 ◽  
Vol 405-408 ◽  
pp. 3459-3462
Author(s):  
Jing Li ◽  
Zong Rong Xu
Keyword(s):  
Quantitative Analysis ◽  
Construction Projects ◽  
Project Cost ◽  
Effective Measure ◽  
Engineering Change ◽  
Change Impact ◽  
The Impact ◽  
Cost Of Construction

Engineering change directly impacts on project cost of construction projects. Beginning upon the typical engineering cases based on the quantities bill valuation, the author carried out the quantitative analysis of the impact on project cost under different changes , and find out a effective measure to prevent changes in order to control project cost.

scholarly journals A Cross-Sectional Epizootiological Study and Risk Assessment of Foot-Related Lesions and Lameness in Intensive Dairy Sheep Farms

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1614
Author(s):  
Marios Moschovas ◽  
Aphrodite I. Kalogianni ◽  
Panagiotis Simitzis ◽  
Georgios Pavlatos ◽  
Stavros Petrouleas ◽  
...  
Keyword(s):  
Risk Factors ◽  
Dairy Sheep ◽  
Related Factors ◽  
White Line ◽  
Cross Sectional ◽  
Total N ◽  
Foot Health ◽  
Foot Diseases ◽  
Foot Lesions ◽  
The Impact

Foot-related lameness, foot-diseases and lesions are emerging issues in dairy sheep; however, relevant epizootiological studies are scarce, and risk factors have not been elucidated. The objectives of this cross-sectional study were (i) to address this dearth of knowledge by investigating the epizootiology of lameness-related foot-lesions and diseases, and (ii) to assess the impact of potential risk factors on foot health, in intensive dairy sheep farms. Thirty farms were assigned in two representative clusters using a multivariate statistical analysis. Three farms per cluster and 100 multiparous milking ewes per farm (total n = 600) were selected and enrolled in the study. Foot-related lameness, ovine interdigital dermatitis (OID), infectious footrot (IFR), white line disease, hoof wall cracks, as well as health and welfare traits were recorded. Overall prevalence of foot-related lameness was 9.0% and was primarily associated with IFR; however, additional infectious and non-infectious foot diseases and lesions also contributed. Among infectious foot diseases, OID was the most prevalent (21.3%) followed by IFR (8.0%); WLD and hoof wall cracks were the most prevalent non-infectious foot-lesions (37.7% and 15.3%, respectively). IFR and OID prevalence increased with age (p < 0.05) and BCS (p < 0.01), respectively, suggesting that host-related factors and husbandry practices are important determinants of its occurrence.

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