scholarly journals Applying system dynamics for outsourcing services in design-build projects

2014 ◽  
Vol 4 (2) ◽  
pp. 20 ◽  
Author(s):  
Stephen Lisse
Keyword(s):  
System Dynamics ◽  
Decision Makers ◽  
Project Delivery ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Project Outcomes ◽  
Work Completion ◽  
Design Build ◽  
Engineering Work ◽  
Complex Project

This study analysed a system dynamics model for outsourcing engineering services in a large and complex project organisational structure that is typically associated with design-build (DB) project delivery. A literature review indicated that most of the reviewed papers implied the project engineering resources were totally insourced or the authors were silent regarding any resources that were outsourced. Comprehensive sensitivity analysis of various model variables was performed, which indicates that the quality and productivity of the outsourced resources as well as the initial number of assigned experienced engineers significantly impacted the amount and timing of engineering work completion. Project outcomes were also impacted by varying the number of initial and changed engineering tasks. The decision to insource/outsource engineering work on DB projects may have significant cost and time impacts, which should be considered by decision makers.

Applying System Dynamics for Nuclear Power Plant Design

2014 ◽  
Author(s):  
Stephen D. Lisse
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
System Dynamics ◽  
Nuclear Power ◽  
Power Plants ◽  
Model Parameters ◽  
Plant Design ◽  
Project Outcomes ◽  
Engineering Work ◽  
Complex Project

This study analyzed a system dynamics model for outsourcing engineering services in a large and complex project organizational structure that is typically associated with nuclear power plants. A literature review indicated that most of the reviewed papers implied the project engineering resources were totally insourced or the authors were silent regarding any resources that were outsourced. Comprehensive sensitivity analysis of various model parameters was performed. Results of running the SD model indicate that the quality and productivity of the outsourced resources and the initial number of assigned experienced engineers significantly impacted the amount and timing of engineering work completion. An analysis was also performed on the project outcomes by varying the number of initial and changed engineering tasks. The results indicate the decision to insource/outsource engineering work on nuclear power plant projects may have significant cost and time impacts which should be considered by decision makers.

System Dynamics for Modelling Subway Passenger Flow in the Transportation Sector

2021 ◽  
pp. 147-157
Author(s):  
Arzu Eren Şenaras ◽  
Onur Mesut Şenaras
Keyword(s):  
System Dynamics ◽  
Decision Makers ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Passenger Flow ◽  
Transportation Sector ◽  
Package Program ◽  
Passenger Flows ◽  
Sd Model

Thank to developed SD model, decision makers can create appropriate policy. The importance of passenger numbers in compartments increased due to COVID-19, and managers didn't want to increase passengers in compartments too much. In this study, a model will be developed in Vensim package program. The model will be developed for analyzing passenger flows. Different scenarios can be tested thanks to developed system dynamics model. Subway passenger flow was analyzed via system dynamics. The SD model was developed in Vensim PLE package program. Passenger flow was defined as rate, and stations are defined as stock. Managers would change timing according to time, and effects of these changes can be observed via the model.

scholarly journals A Multimethodology for Supporting the Boundary Selection of System Dynamics Models

2021 ◽  
Vol 10 (4) ◽  
pp. 1-18
Author(s):  
Leandro Duarte dos Santos ◽  
Sandro Luis Schlindwein ◽  
Erwin Hugo Ressel Filho ◽  
Caroline Rodrigues Vaz ◽  
Mauricio Uriona Maldonado ◽  
...  
Keyword(s):  
System Dynamics ◽  
Decision Makers ◽  
Problem Situation ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Problem Structuring ◽  
Causal Maps ◽  
Selection Step ◽  
Dynamics Models ◽  
Selection Of

System dynamics models can produce knowledge for decision-makers and, consequently, provide better choices. To be effective in its purpose, a model must reproduce an observed problem situation effectively. Hence, the compatibility between the observed problem situation and the created model is essential and represents a considerable challenge. In this context, this paper aims to describe an adaptation of the problem structuring method ‘Strategic Options Development and Analysis’ (SODA), used in the Problem Articulation (Boundary Selection) step of the system dynamics modelling process. In summary, this adaptation consists of: (1) Selecting of stakeholders; (2) Capturing, aggregating and interpreting the insights using cognitive and causal maps, and (3) Using the interpretation of the causal maps for building a system dynamics model. The method proved to be satisfactory since it was able to direct the construction of a System Dynamics model based on a problem situation perceived by stakeholders acting in the native forests of the state of Santa Catarina, Brazil.

scholarly journals A Multimethodology for Supporting the Boundary Selection of System Dynamics Models

2021 ◽  
Vol 10 (4) ◽  
pp. 0-0
Keyword(s):  
System Dynamics ◽  
Decision Makers ◽  
Problem Situation ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Problem Structuring ◽  
Causal Maps ◽  
Selection Step ◽  
Dynamics Models ◽  
Selection Of

System dynamics models can produce knowledge for decision-makers and, consequently, provide better choices. To be effective in its purpose, a model must reproduce an observed problem situation effectively. Hence, the compatibility between the observed problem situation and the created model is essential and represents a considerable challenge. In this context, this paper aims to describe an adaptation of the problem structuring method ‘Strategic Options Development and Analysis’ (SODA), used in the Problem Articulation (Boundary Selection) step of the system dynamics modelling process. In summary, this adaptation consists of: (1) Selecting of stakeholders; (2) Capturing, aggregating and interpreting the insights using cognitive and causal maps, and (3) Using the interpretation of the causal maps for building a system dynamics model. The method proved to be satisfactory since it was able to direct the construction of a System Dynamics model based on a problem situation perceived by stakeholders acting in the native forests of the state of Santa Catarina, Brazil.

scholarly journals A system dynamics model for supporting decision-makers in irrigation water management

2018 ◽  
Vol 223 ◽  
pp. 815-824 ◽  
Author(s):  
Irene Pluchinotta ◽  
Alessandro Pagano ◽  
Raffaele Giordano ◽  
Alexis Tsoukiàs
Keyword(s):  
Water Management ◽  
System Dynamics ◽  
Irrigation Water ◽  
Decision Makers ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Irrigation Water Management

A System Dynamics Model of Health Insurance Financing in Austria

2010 ◽  
Vol 20 (2) ◽  
pp. 59-62
Author(s):  
Patrick Einzinger ◽  
Günther Zauner ◽  
G. Ganjeizadeh-Rouhani
Keyword(s):  
Health Insurance ◽  
System Dynamics ◽  
System Dynamics Model ◽  
Dynamics Model

scholarly journals Transforming a Liability into an Asset: A System Dynamics Model for Free-Ranging Dog Population Management

Systems ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 56
Author(s):  
Urmila Basu Mallick ◽  
Marja H. Bakermans ◽  
Khalid Saeed
Keyword(s):  
System Dynamics ◽  
Social Integration ◽  
Unintended Consequences ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Innovative Strategies ◽  
Management Context ◽  
Free Ranging ◽  
Social Rewards

Using Indian free-ranging dogs (FRD) as a case study, we propose a novel intervention of social integration alongside previously proposed methods for dealing with FRD populations. Our study subsumes population dynamics, funding avenues, and innovative strategies to maintain FRD welfare and provide societal benefits. We develop a comprehensive system dynamics model, featuring identifiable parameters customizable for any management context and imperative for successfully planning a widescale FRD population intervention. We examine policy resistance and simulate conventional interventions alongside the proposed social integration effort to compare monetary and social rewards, as well as costs and unintended consequences. For challenging socioeconomic ecological contexts, policy resistance is best overcome by shifting priority strategically between social integration and conventional techniques. The results suggest that social integration can financially support a long-term FRD intervention, while transforming a “pest” population into a resource for animal-assisted health interventions, law enforcement, and conservation efforts.

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