Effective Stakeholder Management (ESM) has been identified as one of the key requirements for successful project delivery by several scholars. This study, aimed at improving the chances of achieving successful Multifarious Infrastructure Projects’ (MIPs) delivery in Nigeria, was conducted through literature review, questionnaire survey and Relative Importance Index (RII) method of data analysis. The study identified 39 barriers to ESM in the delivery of MIPs in Nigeria, evaluated their respective impacts on projects’ delivery and ranked the barriers in ascending order of their respective impact levels. Failure to understand stakeholders’ needs and expectations, uncooperative attitude of stakeholders, failure to identify key stakeholders, failure to identify potential conflict areas, project manager’s poor knowledge of stakeholder management (SM), late identification of stakeholders, issuance of incorrect information to stakeholders, lack of stakeholder engagement/involvement, conflicts between stakeholders, misunderstanding of roles by stakeholders, lack of fairness and equity for all stakeholders and lack of continuity in SM process were ranked as the ten top barriers, in descending order, with highest levels of impact against ESM in MIPs delivery. The study also provided MIPs managers with an insight on the barriers to address/focus on in order to achieve ESM in the delivery of their projects. The study concluded that there was need to pay special attention to the above barriers due to their high impact level on ESM and improve current approaches to stakeholder management in MIPs delivery in order to improve the success rate of the projects. The study recommends development and effective implementation of an appropriate strategy for handling stakeholder management in the delivery of MIPs and other projects.
System-wide performance analysis of manufacturing setup helps a company to stay competitive. This can be done by selecting appropriate performance analysis tool which can save time and effort. As a problem assembly line systems are difficult to completely model and analyze using either of analytical or discrete-event simulation (DES) models. The main objective of this study is to analyze the distinct modeling capabilities of analytical modeling approach and DES approach so as to take their respective primacy for analysis of particular pertinent parameters suitable for Tana Communication (TC assembly line). Both analytical and discrete-event simulation models are developed for TC production process using decomposition approach and AnyLogic software. The results from the two models for work in process, queue cycle time, cycle time and resource utilization have high degree of agreement. By making reassignment of operators from the idle stage to the bottleneck stage the system waiting time and work in process is reduced by 12% and 13% respectively from the proposed model.
Tsado Abel John, Polycarp Olaku Alumbugu and Archibong Imoh Micheal
The key players in the construction industry are the construction companies. However, the level of contract awards among multinational and indigenous construction companies in most developing countries is poorly understood. This research aim at determining the level of contract awards among multinational and indigenous construction companies. The research employed a quantitative approach using both primary and secondary method of data collection to achieve the stated objective. Purposive sample techniques were used for collecting both the primary and secondary data. Structured questionnaires were administered to 70 construction professionals and contractors to determine the factors responsible for low indigenous contractor’s participation and award of contracts. Primary and secondary data were collected, and the findings reveal that 65% of the contract awards between 2002 and 2012 were won by the multinational construction companies. While the lack of requisite skill and technical know-how with a percentage severity index (SI) score of 97% was responsible for low indigenous construction companies awards. This result indicates that the multinational construction companies are dominating the construction industry.
This non-experimental correlational study extends previous research investigating the relationship between project management methodology and reported project success, as well as the moderating variables of industry and project manager experience. The sample included North American project managers with five years’ experience, 25 years of age or older, and experience with multiple project management methodologies. The survey instrument consisted of 58 questions, utilizing a 5-point Likert scale to record responses. The survey contained three sections, including demographic information, questions related to a successful project, and questions related to a less-than successful (failed / challenged) project. 367 usable responses were received. The examination of the constructs included Pearson’s correlation coefficient as well as linear regression to determine the impact of moderating variables. Results indicated that project management methodology has a weak correlation with reported project success, and this correlation is not moderated by industry nor project manager experience. The results did not align with previously conducted studies, illustrating a need to continue the study of methods impacting success including investigating additional moderating variables.
Over the past three decades, an increasing trend has been observed in research related to the consideration of human factors instead of solely based on the traditional aspects of project and operations management. However, much of the research done to date on human aspects has been conducted in developed countries in Europe, America and Australia, leaving developing countries, especially those in Africa, deprived of similar research. The purpose of the paper is to bridge this gap in knowledge by comparing the soft factors in the two contexts in order to provide an understanding of whether they have the same level of importance, regardless of their differences in economic, social and environmental aspects. The authors used semi-structured interviews to identify the critical soft factors for optimum performance of maintenance operations at a natural gas processing plant in Tanzania. The uncovered soft factors included top management engagement and oversight, trainings, ergonomics, collaboration, safety and security, recognition programs, and education and career growth. There was a high degree of conformity between the soft factors uncovered in the Tanzanian context and those in other African countries and other developing countries around the world. However, there was also conformity between the soft factors uncovered in developing and developed countries, which only differed in the level of the emphasis they placed on implementation.
Gyrocopter or gyroplane is a type of rotorcraft that uses an unpowered main rotor in free autorotation to develop lift. Gyrocopter rotor blades have smaller cord length and longer span compared to helicopters blades. National Advisory Committee for Aeronautics (NACA) 8-H-12 gyrocopter rotor blade profile, unsymmetrical airfoil sections were used for this research. An attempt has been made in this work to investigate the effect of ribs and spar elements in response to applied load. Three possible modeling alternatives were studied to predict the actual induced stress and deformation of the blade: Model I is by considering the blade shell part only, Model II is blade shell with 25 numbers of ribs and without the spar element and Model III is blade shell with 25 numbers of ribs and with spar element. The rotor blade was sized based on single seat open frame and high-wind-start gyrocopter. Structural static analysis has been carried out to evaluate the strength of composite rotor blade using ANSYS Workbench 15. The results show that among these three proposed models; Model III had registered minimum Von Mises stress and deformation. Also the result reveals that by considering ribs and spar element during analysis of gyrocopter blade is crucial because, it will help to know the actual induced stress and deformation. The predicted value of induced stress and deformation is closer to the actual values will help the designer not to overdesign the parts. Consequently, the main drawbacks related to overdesign increase in weight and cost will be minimized; thereby the product operational efficiency will be improved.
Oludolapo Ibrahim Olanrewaju and Victor Nnannaya Okorie
There is a unique link between leadership qualities and organizational success. Leadership is the problem of many organizations but little attention is given to leadership-related research. This paper aimed to examine the qualities of a good leader using principal component analysis (PCA). The study adopted a quantitative research approach by eliciting perceptions of respondents on the qualities of a good leader through structured questionnaire. One hundred and fifty (150) questionnaires were administered to top management of companies within the construction industry, banking industry, food industry, and information technology industry. One hundred and twenty-seven (127) were retrieved and considered for further analysis. The data obtained were analyzed using PCA. The findings revealed the principal qualities of a good leader to be: 1) accessibility and dedication, 2) neutrality and modesty, 3) aspiration and attentiveness, 4) believe and aptitude, 5) dignity and amiability, 6) insight and confidence, 7) vitality and concentration, 8) originality and honesty, 9) responsibility and team spirit, 10) decency and self-assurance, 11) charitable, 12) comical and maintenance culture, and 13) reliability. It is recommended that leaders should demonstrate these leadership qualities to enhance organizational effectiveness and efficiency.
Isabelle Portugal Serrado, João Alberto Neves dos Santos, Nylvandir Liberato Fernandes de Oliveira and Andrey Pimentel Aleluia Freitas
Due to the economic crisis, the Brazilian construction companies faced the challenge of remaining competitive in the market, therefore they need to be restructured. Construction projects are intrinsically risky because it changes the environment both physically and socially. Given this complexity and the great exposure to risk, this research aims to evaluate the market risks in construction projects through a field research, analyzing the perception and judgment of professionals in the area. The data analysis was performed by a multivariate index based on the statistical technique Factor Analysis that can be ordered by risk factors by degree of importance. It was possible to confirm the degree of correlation between the subgroups of risk factors and to establish a ranking of the degree of their importance, and the first one considered more relevant was the risk of reducing the quality of the workforce. It was also identified the low maturity in risk management in organizations, even though in civil works a thorough risk analysis is required.
Oil and gas industry is complex and competitive and its projects are characterized by their importance and complexity. To achieve sustainability, oil and gas firms have to initiate and complete projects to scope, schedule, cost and quality. Hence, efficient Project Management Methodologies (PMMs) play a crucial role in successful project delivery. A conceptual model, adopted from the literature, was used to assess the influence of PMMs on project success. Based on a questionnaire data from 95 project management practitioners within the oil and gas industry in the Kingdom of Bahrain, correlational and regression analyses were used to test the research hypotheses. The quantitative study was backed with 17 semi-structured interviews to obtain in-depth understanding about the organizational PMMs. The major finding of the study revealed that applied PMMs have higher influence on project success in comparison with comprehensive PMMs. The companies in the oil and gas industry in Bahrain need to pay sharper attention to their methodologies and get them evolved with time to achieve higher success rates.
Paulo Araldi, Carlos Eduardo Tino Balestra and Gustavo Savaris
The present study aimed to analyze the interference of different curing conditions on the development of the concrete compressive strength under the perspective of construction management. It is known that the conditions of humidity and temperature are the main factors related to the behavior of the concrete strength, so that modifying these parameters directly affects the material’s behavior and, consequently, construction management. Forty-two specimens of concrete were molded and each 6 specimens were submitted to different temperature and humidity conditions. The first group was oven-cured at a temperature of 100°C. The second and third groups were kept at ambient temperature of 23 ± 2°C being that the latter was submerged in water and the former was exposed to the air humidity. The specimens of groups 4 and 5 were placed in a freezer at 5°C. Group 4 was submerged in water and group 5 was not. The curing of group 6 occurred under submerged condition with water at about 100°C. Group 7, on the other hand, was cured in water vapor. The group submitted to curing at room temperature and submerged condition was the one with the highest compressive strength value, while the ones with the lowest compressive strength were the groups of samples cured in the oven and those submerged at 100°C. The results were compared and tested using statistic methods, which proved that the curing conditions directly affected concrete properties.