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- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- The paper discusses an application of SD to the modelling of ground force combat at about Corps level. The model is based on Lanchester’s equation incorporating concepts for the build-up of combat-ready forces and alternative strategies for their commitment in relation to beak-through criteria. These alternative strategies, together with the appropriate tactical rules for force employment and deployment, determine what may be regarded as policies for the use of forces. The model has been used to investigate these policies and the effect of delays in their implementation. Some illustrative results and conclusions are also discussed.Note: There is no paper available.
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Shorb, Alan Mck, "System Dynamics by Visicalc: Simulation Models Using the New Spreadsheet Programs"
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- Visicalc, the original spreadsheet program for microcomputers is explored for suitability as a vehicle for system dynamics models. It is shown that Visicalc can support most of the model features that DYNAMO allows, but at the price of some inconvenience and care needed when setting up the model. However, with the widespread distribution of spreadsheet programs among decision makers, there maybe situations where they may be the vehicle of choice for implementing a dynamic model.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- The purpose of this paper is to expand our thinking about the possible role system dynamics may play in the evolution of western thought and society. While such a theme may seem presumptuous when applied to a toll known to only a small fraction of people at present, it is my intention to give it some credibility by showing that western society may already be in the midst of evolving fundamental assumptions, beliefs and perceptions more consistent with a systemic world view. Pulled by this undercurrent, tools like system dynamics can focus the forces of change and bring them to bear more directly on pressing societal problems.
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Sedehi, Habib with Paola Valli and Paolo Verrecchia, "Dynamic Models for Planning Tourist Complexes"
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- Planning tourist facilities is a highly complex task. It is necessary to evaluate carefully, with an interdisciplinary approach, all the variables of a technical, architectural, commercial, economical and financial nature that may be involved in a given project, without however ignoring the natural resources of the environment where facilities are to be set up. For a correct evaluation, these resources must be considered limited and seen as a wealth that can be exploited but not wasted, used but not destroyed. The approach outlined above is all the more important in countries like Italy, for instance, where there is a risk of over-exploiting the natural resources of the environment. In all but exceptional cases, an evaluation that does not take the above principles into account will result in a tourist enterprise that is ultimately a failure, as it degrades, often irreparably, the natural environment until it ceases to be an adequate source of revenue. This paper describes an integrated approach which provides, by means of simulation techniques, tools for a proper implementation of tourist facilities taking into due account all the variables and constraints involved, and likewise for the assessment by the Public Administration authorities of the wisdom and soundness of projects submitted to them for approval.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- System dynamics has been taught for over two years in two doctoral programs offered by Nova University, Fort Lauderdale , Florida. These programs are designed for working professionals in public and business administration and feature the inverse of the usual arrangement in which instruction is given on the university campus. For this reason, a traditional teaching approach cannot be used. This paper describes the Nova teaching environment, the format and teaching materials used for system dynamics, student characteristics and performance, and the present trends which affect instruction in system dynamics at Nova University.The introduction of the course in system dynamics has generated a positive response among the students and a limited amount of turbulence in the organization and administration of the program.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- Socio-economic planning primarily addresses the solution of problems relating to inherently indeterminate systems. The class of systems exhibits two sources of complexity which can be conceptualized as the complexity of the idea system and the complexity of the actual physical system. The idea system introduces a multiplicity of available theories, disciplinary differences between the stakeholder roles. The actual system is complex because there usually is not sufficient empirical data relevant to the particular problem since the situational context is unprecedented and non-repeating.It can be argued that problem solving in this context involves designing a new system structure to facilitate social learning, using a heuristic approach. Such a heuristic is different from the more conventional approaches to modeling and problem solving in that it bounds the search space and enhances further inquiry rather than just reflecting the real world conditions. In this paper the main characteristics of this approach are discussed and methodological implications for System Dynamics modeling are drawn.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- This paper examines the role of food producers, population, and the government on the present availability of food in Bangladesh. The study employs a system dynamics model of the population-food-production system for its analysis. This model incorporates mechanisms of production and consumption of food, and population growth. Government policies are considered exogenously. The analysis suggests that, due to the presence of a feedback relationship between food availability and population growth, any policy for improving food supply cannot be considered independently of time. In the long run, none of the policies tested alleviates the shortage, although in the short and intermediate runs, agricultural development and population control policies may improve food consumption per capita. The paper thus seriously questions the rationale of agricultural development policies aimed at increasing food production. However, since many food surplus countries support small populations which are also growing at slow rates, points of entry for policies that effectively alleviate the food shortage should exist. Thus, food policy models for the developing countries should aim at identifying such entry points into the system instead of attempting to increase the food supply.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- Accelerating the rate of economic growth in developing countries has been the important aim of almost all development policies implemented over the past three decades. Experience has shown that such growth is often not sustainable and is likely to be interrupted due to the occurrence of violent political changes. The paper attempts to identify the organizational factors which limit economic growth and which create conditions conducive to the outbreak of political violence. A mathematical model of the socio-political system of the developing country is developed and its behavior is studied using simulation.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- A theoretical framework from the field of Organizational Theory called the “Competing Values Approach to Organizational Effectiveness” was used to analyze five System Dynamics models of organizations. This framework is a perceptual ordering of criteria that are often used to evaluate organizational performance. An example of the procedures involved is discussed using Richmond’s “Organization Evolution” model. The purpose of the exercise was to (1) determine if it was possible to express the behavior a dynamic model in terms of the Competing Values Framework, (2) discover what conceptual and technical problems might arise, and (3) draw some conclusions about the usefulness of the Competing Values Approach to system dynamicists and the usefulness of System Dynamics to organizational theorists. It was found that it is possible to formulate dynamic models in terms of the Competing Values Framework. However, conceptual and technical problems arise since organizational theorists and system dynamicists tend to work at different levels of abstraction. The Competing Values Approach may be used as one of many theoretical frameworks by system Dynamicists as an aid to organizational inquiry. Organizational theorists, on the other hand, can make use of System Dynamics since it allows a researcher to study structure and complex interactions over time.
-
- Type:
- Document
- Fecha de Creacion:
- 1983
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, cf82ceba47eedd73f41b00918de16477, and b0aa2a699b54f0d19f6a9d93bdbcfa18
- Descripción:
- This paper deals with the optimality and efficiency of antithetic random variates in estimating output parameters of general complex stochastic systems (e.g., reliability systems, stochastic networks, queues, etc.) with elements linked by multivariate dependence. It is shown that antithetic random variates are much more accurate than the crude Monte Carlo method, requires less CPU time and can be efficiently used by simulation practitions. The validity of the theory is demonstrated by simulation queueings and reliability systems and stochastic networks of different complexity.