Engineering Consultant Project Cash Flow Controls: An Empirically-Supported System Dynamics Conceptual Model

Author(s):  
Alfred M. Chitongo ◽  
Leon Pretorius
Kybernetes ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mahdi Bastan ◽  
Masoumeh Zarei ◽  
Reza Tavakkoli-Moghaddam ◽  
Hamed Shakouri G.

Purpose The Iranian construction industry has been grappling with numerous problems in recent years, including rework, high costs and design errors. Engineers in this field have always highlighted the use of modern technological methods of construction to improve quality and productivity and reduce time and cost. One of these technologies is the so-called building information modeling (BIM), which has been very difficult to adopt and implement in Iran. The purpose of this study is to propose a systemic and holistic model to analyze the dynamics of adoption and implementation of BIM in this country. The purpose of this paper is to understand the dynamics of BIM acceptance to identify the most effective policy to maximize it in the Iranian manufacturing industry. Design/methodology/approach A two-stage methodology has been developed to achieve the purpose of the research. In the first stage, a technology acceptance model for BIM acceptance was developed using the grounded theory (GT) method. This conceptual model provides a holistic basis for building a simulation model. Thus, in the second stage, we used the dynamics system methodology to extract a dynamic model from the conceptual one. This dynamic model can simulate different policies and may be used to evaluate their respective effectiveness. Findings In this study, using the GT method, we obtained 510 primary codes, 118 secondary codes, 50 concepts and 17 categories. After determining the relationships between categories through axial coding, we reached a conceptual model based on selective coding. Mention some of the variables of the conceptual model. Awareness, security, perceived usefulness and perceived ease of use are some of the most important variables of this model. In the next part, this conceptual model was run using system dynamics and, thus, turned into a causal model in which all the effective variables on BIM technology and their relationships with each other are specified. The stock and flow diagram of the problem and its related equations were presented. To improve the model and solve the problem, we examined the four policies as four future scenarios on the model: continuing the status quo, development of specialist workforce training, bolstering governmental support and increasing awareness via advertisement within. The simulation results showed that government support is the most effective policy for maximizing BIM acceptance in Iran. Practical implications In addition to enumerating all the factors affecting BIM technology, this paper proposes a systemic model that provides an accurate and comprehensive view of the acceptance of this technology. In this regard, by introducing feedback loops, as well as reinforcing and balancing factors versus factors causing stasis, the model offers a much deeper insight into mechanisms associated with BIM development and its barriers. Therefore, this study provides a very useful perspective and basis for policy-makers and all stakeholders to accept and implement BIM technology. The findings of this study can lead to more accurate policy-making, removal of acceptance barriers, promotion of incentives, and consequently more effective acceptance of BIM technology. Originality/value In this study, a new mixed research method was used. The innovation of our study lies in its simultaneous use of GT method to construct an accurate and holistic model and applying the system dynamics methodology to build a holistic and systemic model of the BIM acceptance problem. This research also provides a suitable standard and tool for studying BIM technology in developing countries.


2021 ◽  
Vol 4 (13(112)) ◽  
pp. 101-112
Author(s):  
Olexander Bugrov ◽  
Olena Bugrova

A conceptual model for analyzing the dynamics of the value of the project, achieved as a result of engineering, under conditions of uncertainty has been developed. In the methodological context, the proposed approach is based on an array of isovalues, each of which corresponds to its own level of optimism in forecasting the cash flow for the project. With the increase in the efficiency of the project due to engineering, the entire array of iso-value lines’ changes its geometrical position, moving further from the origin (in the four-dimensional space "time-benefit-cost-risk"). The proposed model includes three stages. At the first stage, input information is collected and the corresponding analysis is initiated. The result of the second stage is a multivariate cash flow forecast and calculation of the benefit-cost ratio (BCR) and its changes for each scenario. The third stage provides the calculation of the expected BCR and its change, an assessment of the risk of making an erroneous decision and changing this risk as a result of the engineering session. The model makes it possible to calculate the achieved proportion of the static and dynamic vectors of change in the value of the project, which is one of the key manifestations of the scientific novelty of the work. In the example considered, the share of the dynamic vector of growth in the value of the project was found to be 35.47 %. The model has an environmental property - the assessment of the success of value engineering under conditions of uncertainty is carried out on the basis of the annual total benefits and the annual total costs throughout the project cycle. Thus, the analysis takes into account the impact of the project on the environment, which is reflected in the risk assessment. The given case testifies to the feasibility of applying the model in the practice of engineering the value of construction projects.


2006 ◽  
Vol 20 (4) ◽  
pp. 375-392 ◽  
Author(s):  
Donald H. Baucom ◽  
Kristina C. Gordon ◽  
Douglas K. Snyder ◽  
David C. Atkins ◽  
Andrew Christensen

Infidelity can have devastating effects on couples’ relationships. Not only are couples typically confused and uncertain about how to proceed, but couple therapists also report that treating infidelity is one of their greatest clinical challenges. In the current article, we present a conceptual model of response to infidelity with a corresponding infidelity-specific, couple-based intervention. This intervention incorporates interventions from cognitive-behavioral, insight-oriented, trauma-based, and forgiveness approaches to working with couples. In addition to this intervention created specifically for treating infidelity, we discuss how existing, empirically supported couple therapies such as traditional behavioral couple therapy (TBCT) and integrative behavioral couple therapy (IBCT) approach the treatment of infidelity. Finally, we present preliminary findings from two small treatment studies that provide initial, encouraging findings for the utility of the infidelity-specific intervention as well as TBCT and IBCT for treating infidelity.


Author(s):  
Meg Fryling

Like any IT project, the intricacy of Enterprise Resource Planning (ERP) implementations brings with it high risks to the organization because of high upfront costs and low success rates. ERP implementations are not simply software installations but a radical integration and transformation of an organization’s business practices. System acceptance and perceptions of success weight heavily on non-technical forces such as people, processes, policies, and organizational culture. This study employs system dynamics techniques to elicit perceptions regarding system acceptance and success in an ERP post-implementation case study setting. A conceptual model was developed based on various literature streams and structure validation was conducted with ERP experts via semi-structured interviews. The resulting model includes technology acceptance and information system success model concepts as well as theories from related literature. Interview findings and methodology reflections are also discussed in this paper.


Systems ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 9
Author(s):  
Kawika Pierson

System dynamics implementations of financial statements are currently limited by the lack of a simple to use, yet sufficiently detailed model that operationally replicates the accounting reporting process for the income statement, balance sheet, cash flow statement, and statement of changes in owners’ equity. While system dynamics accounting structures exist, they are inconsistently applied in the literature. In this paper, we offer a comprehensive accounting model in the hope that academics and practitioners will use its structures to better represent accounting reports in their projects.


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