Within an organization, the employee population is the source of potential malevolent insiders. To investigate the evolution of the insider within an organization, we are developing a model of the employee life cycle. The employee life cycle model is designed to define and analyze interactions of the employee population with insider security protection strategies. The model was exercised for an example scenario that focused on human resources and personnel security activities, specifically, pre-hiring screening and security clearance processes. This modeling effort provides a framework to understand important interactions, interdependencies, and gaps in insider protection strategies. This work is part of a larger effort to develop the basis for an integrated systems-based process for designing and evaluating effective insider security systems.
A conceptual model of post-implementation enterprise resource planning systems (ERP) use is developed and operationalized using a dynamic systems perspective. The primary purpose is to enrich our collective understanding of how companies might facilitate ERP usage to enhance the business value of this technology investment after the initial installation. The conceptual model represents a dynamic information feedback structure that illustrates the relationships among several post-adoptive factors including software and work process training, experiential interventions to facilitate extended and deeper usage, user software and work process understanding, the extent of features implementation, the range of ERP system usage, and ERP benefits. The model is drawn from findings about post-ERP implementation described in the literature. Pragmatic insights are provided by the conceptual model and recommendations for future research are discussed.
This research studied about plant maintenance strategy and condition monitoring technology used in Thailand compared to typical and benchmarking plants in United States.
This study presents a system dynamics analysis of collaborative product development in a manufacturer-supplier dyad. We conduct a SD-based case study in Taiwan high-tech electronics where a manufacturer and a supplier form vertical product development partnerships. The SD inquiry helps inter-organizational project teams understand how cognitive and social factors such as psychological safety, level of collaboration, and group learning rather than technical factors such as the deployment of collaboration software affect the development cycle-time more. We set up a simulation model and give propositions based on simulation experiments. Simulation results show that higher level of psychological safety and collaboration contributes to the cycle-time reduction and facilitates group learning. Interestingly, the highest level of psychological safety and collaboration does not necessarily lead to most group learning activities. Moreover, project teams exhibit poorer group learning and team productivity when they merely set up higher performance goals without enhancing initial level of collaboration and psychological safety.
The underlying structure of system dynamics models is that of a proportional feedback controller. We propose a broader framework for system dynamics models, where systems are modeled using a combined feedback-feedforward structure. While the traditional structure for system dynamics models only uses proportional feedback of error for control, the proposed structure for information feedback employs the use of proportional, integral and derivative (PID) error. Hence, existing system dynamics models only use a small subset of the proposed structure for modeling systems. We argue that the proposed structure provides a more flexible framework for modeling and designing systems.
This paper uses hybrid simulation to evaluate the impact of a whiteboard on the workflow of an A&E department. Hybrid simulation in this context is defined as the integrated use of discrete event simulation and system dynamics; we illustrate how discrete event simulation and system dynamics, by themselves, are incapable of meeting the objective. "Parsimonious" and "divide and conquer" principles for model-building have been followed. We also highlight how a slight modification to the "divide and conquer" approach can assist multi-method users. This paper has deployed novel approach of hybrid simulation in the context of healthcare. It attempts to link value proposition of information system (whiteboard/ electronic patient tracking system) to workflow of A&E department. Due to technical limitation with respect to automatic exchange of information between system dynamics and discrete event simulation, potential of hybrid simulation could not be deployed to maximum level.
This work is an attempt to go ahead on a suitable system dynamics model for goal dynamics in organizations proposed by Barlas & Yasarcan (2008). Even if the proposed model doesnât have any pretension to be exhaustive, the main objective of this paper is to propose a model of goal dynamics in which Goal Setting, Management by Objectives and Training are viewed as human resources practices able to enhance workersâ goal commitment, and therefore, organizational performance. In the first part of this paper, an analysis of Goal Setting Theory and the role of goal setting practice in enhancing workerâs performance are remarked. In the second part, the case-study, the causal loop and a quantitative model of goal dynamics in organizations are described. In the third part, behaviour reproduction test, optimization analysis for parameter estimation and scenario analysis are presented. Limits of this research and conclusion are finally discussed.
Decisions made in the air transport industry are defined by perceptions. Airlines order aircraft when they believe the conditions to upgrade their fleet are appropriate in terms of profitability and market opportunities. However, the financial performance of an airline can be easily affected by several variables.
Recent literature in economic growth suggests that a theoretical research convergence among historical studies and neo-growth theory is presently taking place. We argue in this paper that system dynamics, due to be a flexible methodology, may be an instrument for helping to bridge those two strands of thoughts. The paper begins for presenting a stylized historical background for endogenous growth theory which is perhaps one the more appealing modern interpretation of growth process available. A simple endogenous growth model based on this historical background is then provided and re-written in system dynamics language. An enlarged version of the basic growth model is next presented and it is shown how to assess the strength of the different feedback loops involved in the process of economic growth. The conclusive section of the paper finally suggests that system dynamics can be an important complementary tool for understanding and perhaps enhancing economic growth in less developed countries