A Conceptual Framework for Impact of Project Complexity on Success of Railway Construction Projects: The Moderating Role of Effective Communications to All Stakeholders

Authors

  • Hassan Ghaleb UNISZA
  • Abdul Aziz Abdullah Faculty of Business and Management, Unisza

DOI:

https://doi.org/10.37231/jmtp.2021.2.1.85

Keywords:

Railway Construction Projects; Project complexity; Effective communications to all stakeholders; Project success.

Abstract

The aim of this study is proposing a framework for the roll of effective communications to all stakeholders in moderating project complexity to improve project success. This paper deeply reviewed the studies published in project complexity and it is effect on success of construction project. This research reveals that effect communications as the most important factor can play a significant role in influencing the relationship between complexity and project success. It was confirmed from previous studies that the negative impact of project complexity on success of construction project is conclusive. Complexity dimensions identified by the Project Management Institute (PMI) into three groups are: human behaviour, ambiguity, and system behaviour. Many empirical studies proved there is a positive and significant relationship between project complexity and project success. Thus, there is a need for a moderating variable to enhance the success of complex construction projects. In this study the main contribution is bridging this gap of knowledge by empirical examining the relations between complexity of construction projects and project success with the interaction of effective communications to all stakeholders as a moderator. This study will enhance development of construction projects in Malaysia and assist scholars and practitioners to achieve maximum project success.

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References

Al-Tmeemy, S. M. H. M., Abdul-Rahman, H., & Harun, Z. (2011). Future criteria for success of building projects in Malaysia. International Journal of Project Management, 29(3), 337–348. https://doi.org/10.1016/j.ijproman.2010.03.003

Alashwal, A. M., Rahman, H. A., & Beksin, A. M. (2011). Knowledge sharing in a fragmented construction industry: On the hindsight. Scientific Research and Essays, 6(7), 1530–1536. https://doi.org/10.5897/SRE10.645

Albert, M., Balve, P., & Spang, K. (2017). Evaluation of project success : a structured literature review. Retrieved from https://www.emerald.com/insight/content/doi/10.1108/IJMPB-01-2017-0004/full/html

Anantatmula, V. S. (2015). Strategies for enhancing project performance. Journal of Management in Engineering, 31(6), 4015013. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000369

Andrić, J. M., Wang, J., & Zhong, R. (2019). Identifying the critical risks in railway projects based on fuzzy and sensitivity analysis: A case study of belt and road projects. Sustainability, 11(5), 1302. https://doi.org/10.3390/su11051302

Atkinson, R. (1999). Project management: cost, time and quality, two best guesses and a phenomenon, its time to accept other success criteria. International Journal of Project Management, 17(6), 337–342. https://doi.org/10.1016/S0263-7863(98)00069-6

Baccarini, D. (1996). The concept of project complexity—a review. International Journal of Project Management, 14(4), 201–204. https://doi.org/10.1016/0263-7863(95)00093-3

Bakhshi, J., Ireland, V., & Gorod, A. (2016). Clarifying the project complexity construct: Past, present and future. International Journal of Project Management, 34(7), 1199–1213. https://doi.org/10.1016/j.ijproman.2016.06.002

Bosch-Rekveldt, M. G. C. (2011). Managing project complexity: A study into adapting early project phases to improve project performance in large engineering projects. Delft Centre for Project Management, Delft, Netherlands. http://resolver.tudelft.nl/uuid:a783e581-bc7a-4efa-adcb-7e9201840367

Bosch-Rekveldt, M., Jongkind, Y., Mooi, H., Bakker, H., & Verbraeck, A. (2011). Grasping project complexity in large engineering projects: The TOE (Technical, Organizational and Environmental) framework. International Journal of Project Management, 29(6), 728–739. https://doi.org/10.1016/j.ijproman.2010.07.008

Brady, T., & Davies, A. (2014). Managing structural and dynamic complexity: A tale of two projects. Project Management Journal, 45(4), 21–38. https://doi.org/10.1002/pmj.21434

Bryde, D. J., & Robinson, L. (2005). Client versus contractor perspectives on project success criteria. International Journal of Project Management, 23(8), 622–629. https://doi.org/10.1016/j.ijproman.2005.05.003

Ceric, A. (2014). Minimizing communication risk in construction: a Delphi study of the key role of project managers. Journal of Civil Engineering and Management, 20(6), 829–838. https://doi.org/10.3846/13923730.2013.802739

Chan, A. P. C., Scott, D., & Chan, A. P. L. (2004). Factors affecting the success of a construction project. Journal of Construction Engineering and Management, 130(1), 153–155. https://doi.org/10.1061/(ASCE)0733-9364(2004)130:1(153)

Cavalieri, M., Cristaudo, R., & Guccio, C. (2019b). On the magnitude of cost overruns throughout the project life-cycle: An assessment for the Italian transport infrastructure projects. Transport Policy, 79(April 2018), 21–36. https://doi.org/10.1016/j.tranpol.2019.04.001

Chan, A. P. C., Scott, D., & Lam, E. W. M. (2002). Framework of success criteria for design/build projects. Journal of Management in Engineering, 18(3), 120–128. https://doi.org/10.1061/(ASCE)0742-597X(2002)18:3(120)

Chapman, R. J. (2016). A framework for examining the dimensions and characteristics of complexity inherent within rail megaprojects. International Journal of Project Management, 34(6), 937–956. https://doi.org/10.1016/j.ijproman.2016.05.001

Chen, H., Guilin, H., Poon, S. W., & Ng, F. F. (2004). Cost risk management in West Rail project of Hong Kong. AACE International Transactions, IN91. https://search.proquest.com/scholarly-journals/cost-risk-management-west-rail-project-hong-kong/docview/208179138/se-2?accountid=201395

Cheung, S. O., Yiu, T. W., & Lam, M. C. (2013). Interweaving trust and communication with project performance. Journal of Construction Engineering and Management, 139(8), 941–950. https://doi.org/10.1061/(ASCE)CO.1943-7862.0000681

Chu, D., Strand, R., & Fjelland, R. (2003). Theories of complexity. Complexity, 8(3), 19–30. https://doi.org/10.1002/cplx.10059

Dainty, A., Moore, D., & Murray, M. (2007). Communication in construction: Theory and practice. Routledge. https://books.google.com.my/books?id=2n9_AgAAQBAJ&lpg=PP1&ots=iMfIGJ1zwX&dq=Communication%20in%20construction%3A%20Theory%20and%20practice.&lr&pg=PR5#v=onepage&q=Communication%20in%20construction:%20Theory%20and%20practice.&f=false

Doloi, H., Sawhney, A., Iyer, K. C., & Rentala, S. (2012). Analysing factors affecting delays in Indian construction projects. International Journal of Project Management, 30(4), 479–489. https://doi.org/10.1016/j.ijproman.2011.10.004

Eriksson, P. E., Larsson, J., & Pesämaa, O. (2017). Managing complex projects in the infrastructure sector—A structural equation model for flexibility-focused project management. International Journal of Project Management, 35(8), 1512–1523. https://doi.org/10.1016/j.ijproman.2017.08.015

Fariq, N., Ismail, S., & Ab Rani, N. I. (2020). Cost Risk of Railway Project and Its Effective Mitigation Strategies. Journal of Critical Reviews (ISSN: 2394-5125), 7(8), 1275–1280. http://dx.doi.org/10.31838/jcr.07.08.262

Flyvbjerg, B. (2014). What you should know about megaprojects and why: An overview. Project Management Journal, 45(2), 6–19. https://doi.org/10.1002/pmj.21409

Gallois, C., & Giles, H. (2015). Communication accommodation theory. The International Encyclopedia of Language and Social Interaction, 1–18. https://doi.org/10.1002/9781118611463.wbielsi066

Gidado, K. I. (1996a). Project complexity: The focal point of construction production planning. Construction Management & Economics, 14(3), 213–225. https://doi.org/10.1080/014461996373476

Gidado, K. I. (1996b). Project complexity: The focal point of construction production planning. Construction Management and Economics, 14(3), 213–225. https://doi.org/10.1080/014461996373476

Hamzah, N., Khoiry, M. A., Arshad, I., Badaruzzaman, W. H. W., & Tawil, N. M. (2012). Identification of the causes of construction delay in Malaysia. In Proceedings of world academy of science, engineering and technology (p. 614). World Academy of Science, Engineering and Technology (WASET), 72(12), 312-317. https://www.academia.edu/download/32026087/Identification_of_the_causes_of_construction_delay_in_Malaysia.pdf

He, Q., Luo, L., Hu, Y., & Chan, A. P. C. (2015). Measuring the complexity of mega construction projects in China—A fuzzy analytic network process analysis. International Journal of Project Management, 33(3), 549–563. https://doi.org/10.1016/j.ijproman.2014.07.009

Ika, L. A. (2009). Project success as a topic in project management journals. Project Management Journal, 40(4), 6–19. https://doi.org/10.1002/pmj.20137

Joslin, R., & Müller, R. (2015a). Relationships between a project management methodology and project success in different project governance contexts. International Journal of Project Management, 33(6), 1377–1392. https://doi.org/10.1016/j.ijproman.2015.03.005

Joslin, R., & Müller, R. (2015b). Relationships between a project management methodology and project success in different project governance contexts. International Journal of Project Management, 33(6), 1377–1392. https://doi.org/10.1016/j.ijproman.2015.03.005

Jugdev, K., & Müller, R. (2005). A retrospective look at our evolving understanding of project success. Project Management Journal, 36(4), 19–31. https://doi.org/10.1177/875697280503600403

Kardes, I., Ozturk, A., Cavusgil, S. T., & Cavusgil, E. (2013). Managing global megaprojects: Complexity and risk management. International Business Review, 22(6), 905–917. https://doi.org/10.1016/j.ibusrev.2013.01.003

Kermanshachi, S., & Safapour, E. (2019). Identification and Quantification of Project Complexity From Perspective of Primary Stakeholders in Us Construction Projects. Journal of Civil Engineering and Management, 25(4), 380–398. https://doi.org/10.3846/jcem.2019.8633

Lam, P. T. I., Chiang, Y. H., & Chan, S. H. (2011). Critical success factors for bond financing of construction projects in Asia. Journal of Management in Engineering, 27(4), 190–199. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000063

Lan, L., Qing-Hua, H., & Long-Long, S. (2015). Identifying the Project Complexity Factors of Complex Construction Projects. 2015 International Conference on Management Science & Engineering (22th), (71390523), 1697–1702. Retrieved from http://icmse.hit.edu.cn/icmsecn/ch/reader/create_pdf.aspx?file_no=L2015090226&flag=2

Laufer, A., Shapira, A., & Telem, D. (2008). Communicating in dynamic conditions: How do on-site construction project managers do it? Journal of Management in Engineering, 24(2), 75–86. https://doi.org/10.1061/(ASCE)0742-597X(2008)24:2(75)

Lebcir, R. M., & Choudrie, J. (2011). A dynamic model of the effects of project complexity on time to complete construction projects. International Journal of Innovation, Management and Technology, 2(6), 477. http://www.ijimt.org/papers/179-A10002.pdf

Leonard S, G. (2016). Effective Communications for Project Success. Wiley Online Library, 26(2), 101–108. https://doi.org/10.1002/rem

Lim, C. S., & Mohamed, M. Z. (1999). Criteria of project success: an exploratory re-examination. International Journal of Project Management, 17(4), 243–248. https://doi.org/10.1016/S0263-7863(98)00040-4

Lin, M., Shen, L., MA, S., & CHEN, J. (2005). New System of Project Success Criteria: Base on the Total Life Cycle of Project [J]. Industrial Engineering and Management, 1. https://en.cnki.com.cn/Article_en/CJFDTotal-GYGC200501028.htm

Liu, W.-H., & Cross, J. A. (2016). A comprehensive model of project team technical performance. International Journal of Project Management, 34(7), 1150–1166. https://doi.org/10.1016/j.ijproman.2016.05.011

Livesey, P. V. (2016). Insights of project managers into the problems in project management. Construction Economics and Building, 16(1), 90–103. https://doi.org/10.5130/AJCEB.v16i1.4600

Locatelli, G., Mikic, M., Kovacevic, M., Brookes, N., & Ivanisevic, N. (2017). The successful delivery of megaprojects: a novel research method. Project Management Journal, 48(5), 78–94. https://doi.org/10.1177/875697281704800506

Lucas, C. (2000). Quantifying complexity theory. CALResCo Group. URL: http://www. Calresco. Org/Lucas/Quantify. Htm.

Luo, L., He, Q., Jaselskis, E. J., & Xie, J. (2017a). Construction project complexity: research trends and implications. Journal of Construction Engineering and Management, 143(7), 4017019. https://doi.org/10.1061/(ASCE)CO.1943-7862.0001306

Luo, L., He, Q., Jaselskis, E. J., & Xie, J. (2017b). Construction project complexity: Research trends and implications. Journal of Construction Engineering and Management, 143(7). https://doi.org/10.1061/(ASCE)CO.1943-7862.0001306

Luo, L., He, Q., Xie, J., Yang, D., & Wu, G. (2017). Investigating the relationship between project complexity and success in complex construction projects. Journal of Management in Engineering, 33(2), 4016036. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000471

Ma, L., & Fu, H. (2020). Exploring the influence of project complexity on the mega construction project success: a qualitative comparative analysis (QCA) method. Engineering, Construction and Architectural Management. https://doi.org/10.1108/ECAM-12-2019-0679

Mahamid, I. (2016). Micro and macro level of dispute causes in residential building projects: Studies of Saudi Arabia. Journal of King Saud University-Engineering Sciences, 28(1), 12–20. https://doi.org/10.1016/j.jksues.2014.03.002

Maylor, H., Richard, V., & Stephen, C. (2008). Managerial Complexity in Project- Based Operations: A Grounded Model and Its Implications for Practice. Project Management Journal, 39, 28–42. https://doi.org/10.1002/pmj

Maylor, H., Vidgen, R., & Carver, S. (2008). Managerial complexity in project-based operations: A grounded model and its implications for practice. Project Management Journal, 39(1_suppl), S15–S26. https://doi.org/10.1002/pmj.20057

McLeod, L., Doolin, B., & MacDonell, S. G. (2012). A perspective-based understanding of project success. Project Management Journal, 43(5), 68–86. https://doi.org/10.1002/pmj.21290

Memon, A. H., Abdul Rahman, I., & Aziz, A. A. A. (2011). Time overrun in construction projects from the perspective of project management consultant (PMC). Journal of Surveying, Construction and Property, 2(1). https://doi.org/10.22452/jscp.vol2no1.4

Meng, X., Zhao, Q., & Shen, Q. (2011). Critical success factors for transfer-operate-transfer urban water supply projects in China. Journal of Management in Engineering, 27(4), 243–251. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000058

Mikkelsen, M. F. (2018). Projects, success, and complexity. In International Project Management Association Research Conference 2017 (pp. 0–13). Project Management Research and Practice. https://doi.org/10.5130/pmrp.ipmarc2017.5618

Miller, R., & Hobbs, B. (2005). Governance regimes for large complex projects. Project Management Journal, 36(3), 42–50. https://doi.org/10.1177/875697280503600305

Mirza, E., & Ehsan, N. (2017). Quantification of project execution complexity and its effect on performance of infrastructure development projects. Engineering Management Journal, 29(2), 108–123. https://doi.org/10.1080/10429247.2017.1309632

Molenaar, K. R., Javernick-Will, A., Bastias, A. G., Wardwell, M. A., & Saller, K. (2013). Construction project peer reviews as an early indicator of project success. Journal of Management in Engineering, 29(4), 327–333. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000149

Naderpajouh, N., & Hastak, M. (2014). Quantitative analysis of policies for governance of emergent dynamics in complex construction projects. Construction Management and Economics, 32(12), 1222–1237. https://doi.org/10.1080/01446193.2014.980835

Naoum, S., & Egbu, C. (2015). Critical review of procurement method research in construction journals. Procedia Economics and Finance, 21, 6–13. https://doi.org/10.1016/S2212-5671(15)00144-6

Nguyen, A. T., Nguyen, L. D., Le-Hoai, L., & Dang, C. N. (2015). Quantifying the complexity of transportation projects using the fuzzy analytic hierarchy process. International Journal of Project Management, 33(6), 1364–1376. https://doi.org/10.1016/j.ijproman.2015.02.007

Nguyen, T. S., & Mohamed, S. (2018). Stakeholder Management in Complex Projects. The 7th World Construction Symposium 2018, (July). https://research-repository.griffith.edu.au/bitstream/handle/10072/385361/NGUYEN221601.pdf?sequence=1

Ozorhon, B., & Cinar, E. (2015). Critical success factors of enterprise resource planning implementation in construction: Case of Turkey. Journal of Management in Engineering, 31(6), 4015014. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000370

Park, H., Kim, K., Kim, Y.-W., & Kim, H. (2017). Stakeholder management in long-term complex megaconstruction projects: The Saemangeum Project. Journal of Management in Engineering, 33(4), 5017002. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000515

PMI. (2013a). PMI’s Pulse of the Profession In-Depth Report: navigating complexity. PMI Publishing Division. https://www.pmi.org/~/media/PDF/Business-Solutions/Navigating_Complexity.ashx#:~:text=PMI's%20Pulse%20of%20the%20Profession%E2%84%A2%20In%2DDepth%20Report%3A%20Navigating,their%20complex%20projects%20and%20programs.&text=Recognizing%20it%20is%20one%20thing,organizational%20capability%20is%20quite%20another

PMI. (2013b). PMI’s Pulse of the Profession In-Depth Report: Navigating Complexity. Project Management Institute, Inc.

PMI. (2013c). The high cost of low performacne_The Essential Role of Communications Report _ PMI Pulse of Profession-2013-PMI.pdf. Retrieved from https://www.pmi.org/-/media/pmi/documents/public/pdf/learning/thought-leadership/pulse/the-essential-role-of-communications.pdf

PMI. (2014). Navigating Complexity: A Practice Guide. Pennsylvania, USA. https://www.pmi.org/pmbok-guide-standards/practice-guides/complexity

PMI, A. (2008). Guide to the Project Management Body of Knowledge (PMBoK Guide 4th ed). PMI, USA.

Remington, K., & Pollack, J. (2007). Tools for Complex Projects. Gower Publishing company. Aldershott, UK. https://books.google.com.my/books?id=bNQ5QAbRuqsC&lpg=PR11&ots=6AgTzBup2Z&dq=Tools%20for%20Complex%20Projects&lr&pg=PR11#v=onepage&q=Tools%20for%20Complex%20Projects&f=false

Sambasivan, M., & Soon, Y. W. (2007). Causes and effects of delays in Malaysian construction industry. International Journal of Project Management, 25(5), 517–526. https://doi.org/10.1016/j.ijproman.2006.11.007

Sargut, G., & McGrath, R. G. (2011). Learning to live with complexity. Harvard Business Review, 89(9), 68–76. https://www.billsynnotandassociates.com.au/images/stories/documents/complexity.pdf

Senescu, R. R., Aranda-Mena, G., & Haymaker, J. R. (2013). Relationships between project complexity and communication. Journal of Management in Engineering, 29(2), 183–197. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000121

Senge, P. M. (2006). The fifth discipline: The art and practice of the learning organization (Rev. ed.). New York, NY: Currency Doubleday. http://www.semesteratsea.org/wp-content/uploads/2012/04/Bailey_ENGR2595_SYSThinking.pdf

Shane, J., Strong, K., Gransberg, D., & Jeong, D. (2015). Guide to project management strategies for complex projects, National Academies of Science, Washington, DC. http://www.trb.org/Main/Blurbs/167482.aspx

Shenhar, A., & Holzmann, V. (2017). The three secrets of megaproject success: Clear strategic vision, total alignment, and adapting to complexity. Project Management Journal, 48(6), 29–46. https://doi.org/10.1177/875697281704800604

Simpeh, E. K., Ndihokubwayo, R., Love, P. E. D., & Thwala, W. D. (2015). A rework probability model: a quantitative assessment of rework occurrence in construction projects. International Journal of Construction Management, 15(2), 109–116. https://doi.org/10.1080/15623599.2015.1033814

Srdić, A., & Šelih, J. (2015). Delays in construction projects: causes and mitigation. Organization, Technology & Management in Construction: An International Journal, 7(3), 1383–1389. https://doi.org/10.5592/otmcj.2015.3.5

Stephen, W. J., & Maylor, H. (2009). And then came Complex Project Management. International Journal of Project Management, 27(3), 304–310. https://eprints.usq.edu.au/6926/2/Whitty_Maylor_2007_PV.pdf

T.S, N., & Sherif, M. (2018). Stakeholder management in complex projects. In The 7th World Construction Symposium 2018: Built Asset Sustainability: Rethinking Design, Construction and Operations (pp. 497-506). https://research-repository.griffith.edu.au/bitstream/handle/10072/385361/NGUYEN221601.pdf?sequence=1

Tatikonda, M. V, & Rosenthal, S. R. (2000). Technology novelty, project complexity, and product development project execution success: a deeper look at task uncertainty in product innovation. IEEE Transactions on Engineering Management, 47(1), 74–87. https://doi.or/10.1109/17.820727

Valle Jr, V. (2000). Chaos, complexity and deterrence. NATIONAL DEFENSE UNIV WASHINGTON DC. https://apps.dtic.mil/sti/pdfs/ADA432927.pdf

Vidal, L., & Marle, F. (2008). Understanding project complexity: implications on project management. Kybernetes, 37(8), 1094–1110. Emerald Group Publishing Limited. https://doi.org/10.1108/03684920810884928

Vrijhoef, R., & Koskela, L. (2005). A critical review of construction as a project-based industry: identifying paths towards a project-independent approach to construction. Proceedings CIB Combining Forces. June, Helsinki. Forthcoming. 13-24. http://www.irbnet.de/daten/iconda/CIB6804.pdf

Williams, T. M. (1999). The need for new paradigms for complex projects. International Journal of Project Management, 17(5), 269–273. https://doi.org/10.1016/S0263-7863(98)00047-7

Wong, P. S. P., & Cheung, S. O. (2005). Structural equation model of trust and partnering success. Journal of Management in Engineering, 21(2), 70–80. https://doi.org/10.1061/(ASCE)0742-597X(2005)21:2(70)

Wood, H., & Ashton, P. (2010). The factors of project complexity. In TG62-Special Track 18th CIB World Building Congress, CIB Publication, Rotterdam, Netherlands. http://site.cibworld.nl/dl/publications/tg62_pub353.pdf#page=73

Wood, H., & Gidado, K. (2008). Project complexity in construction. COBRA 2008 - Construction and Building Research Conference of the Royal Institution of Chartered Surveyors, 1–13. https://www.researchgate.net/profile/Kassim_Gidado/publication/266281421_Project_Complexity_in_Construction/links/54ee05ed0cf2e2830863e003.pdf

Xia, B., & Chan, A. P. C. (2012). Measuring complexity for building projects: a Delphi study. Engineering, Construction and Architectural Management. https://doi.org/10.1108/09699981211192544

Ye, G., Jin, Z., Xia, B., & Skitmore, M. (2015). Analyzing causes for reworks in construction projects in China. Journal of Management in Engineering, 31(6), 4014097. https://doi.org/10.1061/(ASCE)ME.1943-5479.0000347

Yong, Y. C., & Mustaffa, N. E. (2013). Critical success factors for Malaysian construction projects: an empirical assessment. Construction Management and Economics, 31(9), 959–978. https://doi.org/10.1080/01446193.2013.828843

Yu, A. T. W., Shen, Q., Kelly, J., & Hunter, K. (2006). Investigation of critical success factors in construction project briefing by way of content analysis. Journal of Construction Engineering and Management, 132(11), 1178–1186. https://doi.org/10.1061/(ASCE)0733-9364(2006)132:11(1178)

Zeng, W., Zhang, J., Wang, H., & Zhou, H. (2018). Supplier development and its incentives in infrastructure mega-projects: A case study on Hong Kong-zhuhai-macao bridge project. Frontiers of Engineering Management, 5(1), 88–97. https://doi.org/10.15302/J-FEM-2018077

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2021-03-17

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A Conceptual Framework for Impact of Project Complexity on Success of Railway Construction Projects: The Moderating Role of Effective Communications to All Stakeholders. (2021). The Journal of Management Theory and Practice (JMTP), 2(1), 62-69. https://doi.org/10.37231/jmtp.2021.2.1.85