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-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- An examination of knowledge acquisition techniques and knowledge representation structures used in expert system development and technology forecasting, helped to determine how to elicit information from System Dynamics analysts. In this ongoing research, insights from the literature on knowledge acquisition, combined with knowledge elicited from System Dynamics analysts, are being used to develop an approach designed to improve the knowledge acquisition processes and structures used during the problem formulation and model conceptualization activities of System Dynamics. Also, preliminary insights are presented regarding the selection of knowledge acquisition techniques and knowledge representation structures.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- A STELLA model of a simple production organization is used to investigate the effects of different types of coordination on the adaptation of the organization to its changing environment.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- This paper reports results of research on modelling to support management modernization and institutional improvement. It considers middle and long term strategies, and it analyses the effect of successful programs. System Dynamics, an appropriate methodology to support institutional planning, may help to understand system organization, its internal structure and the impact of policies and external perturbations. Strategies analyzed here are based on information systems, management decentralization, and leadership.Simulation results are useful to understand the pertinence of selected strategies.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- Negotiation between individuals, groups, and nation has been much in the news lately, and has merited the attention of system dynamic modelers, as was evident at the plenary session on negotiations at the 1990 International System Dynamics Conference. The “Behavioral Simulation Model of Single and Iterative Negotiations” presented there by Darling and Richardson provided a realistic model of critical factors negotiators take into account “while engaged in a joint decision-making process that leads to an outcome” (1990,299). This paper uses their model to explain why “long-term interdependent relationships…[sometimes] drift into increasingly competitive, acrimonious behavior…”(240). Using a fictional piece--“Tell Me a Riddle” by Tillie Olsen--this paper explores “the source of these [competitive] dynamics [which] may be found in the negotiators’ cognitive characteristics --the structure of problems they confront, their situational goals, and their behavioral limits and biases…” (240). After analyzing the behavior of the negotiators-- a couple that has been married for forty- seven years--this paper reframes the power distribution in the relationship and re-writes the script, using cybernetics and syntonoics, a system of interpersonal communication based on “being in tune with one another linguistically”(Elgin, 1987,23). The resulting script saves the wife from becoming a victim of her husband’s verbal abuse, and leads to more satisfactory negotiations.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- System dynamics models and executive information systems have complementary strengths in aiding decision making. Information system has vast data retrieval and presentation capabilities. Models provide a dynamic framework for exploring the long-term, systemic implications of decision and polices. This paper reports on an attempt to combine the two approaches-using the model as a lens to structure and view data sets. This paper briefly describes the lens-based executive information system method and explores four tangible benefits of this integrated approach to decision-making.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- One of our major challenges in system dynamics, and a prerequisite for successful policy design, is to establish an understanding of the relationship between the structure and the behavior of complex, dynamic systems. In this paper, we propose the utilization of a combination of a phase- and a time-plot, called a structure-behavior diagram, to obtain such an understanding. To demonstrate its usefulness, we apply the diagram in order to explain the transient behavior of a simple ecological system and illustrate the dynamics of its modes of behavior under changing harvesting intensity. Our discussion focuses on equilibria and shifts in the dominant polarity and indicates a qualitative difference between the two with respect to resistance to bifurcations.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- The Delphi method has been used as a method of knowledge capture and consensus building in a variety of social and managerial areas for a considerable period of time and more recently it has been applied in the field of System Dynamics. This paper describes research into the development and application of a computerised version of the Delphi method to assist the development of System Dynamics models. It has been developed in the context of project aimed at improving the design and assessment of computer based information systems.The features of a Hypermedia based Delphi system that has been developed for the Apple Macintosh are described and the results of its application to a modelling exercise are discussed, with particular emphasis on its ability to create consensus influence diagrams.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- This paper discusses how to use the simulation data obtained from the adiabatic reaction calorimeter (ARC) to design the emergency relief system for chemical reactors and storage vessels to overcome the problem of reactors explosions resulted from excessive pressure and thus the disastrous incidents can be avoided. Here the styrene polymerization reaction is choosen as the reaction system to describe the design of emergency relief system using the ARC data. The simulation results show that the change of the initiator and the monomer concentration will influence the maximum temperature, pressure and the rate of temperature rise in the reactor. The simulation results also illustrate that in the designing of the emergency relief system, the larger the overpressure is, and the smaller the vent diameter will be needed.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- We treat some problems of controlling the development of a two-phase system which is identified with the evolution of its inter-face. First we study the class of so-called decision change regimes and find out an estimate for the number of decision changes. Then we consider the possibility of optimal control in this class.
-
- Type:
- Document
- Date Created:
- 1992
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 68f8be4710ef70435fee8d3c8bf4c1f7, and c1647c2958efc6aa1703a2b3e2d5c65f
- Description:
- :There are many different systems approaches and styles of systems thinking that have developed over the past three decades. There a few conceptual frameworks on which to compare the relative merits of each approach. This paper will propose such a conceptual framework, the “systems paradigms framework”. Within the context of this framework new systems approach will be described. It is labelled the “integrative systems approach”. It will be argued that the system dynamics perspective is the best existing example of the integrative approach. The integrative approach will be compared to the hard systems, soft systems, and cybernetic systems approaches, in terms of the systems paradigms framework.