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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- What aspects of basic system dynamics are covered by the traditional school math curriculum? The Booth Sweeney and Sterman (2000) bathtub tasks and the Jensen and Brehmer (2003) rabbits-and-foxes task were dissected into aspects. Questionnaires with tasks tapping into the identified aspects were administered to first-semester university students with a math-intensive high school background. Performance were as expected and conformed to the results of previous studies with these tasks. These results encourage further effort to devise additional tasks covering more basic aspects identified, and refining the existing tasks. Equipped with a well-design battery of tasks, it would in all likelihood be informative to test it with different participant groups, such as undergraduate, as well as graduate, students in math, engineering, and system dynamics.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- Housing for the poor remains a major policy problem in U.S. cities. Jay Forresters 1969 Urban Model predicted that increasing the availability of low income housing exacerbates the city deterioration. Poverty and homelessness are on the rise in this country. Families, often single parents with children, and the elderly are two of the largest groups affected. Subsidized housing is one way to fight homelessness. This years budget proposal has President Bush slashing funding to the department of Housing and Urban Development, including many programs that help supply housing to the poor. I plan to investigate various low income housing policies to determine how and why they would or would not work.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- As New Year rolls in, many of us take on challenge of personal change. Many set goals to lose weight; do more exercises; watch less television; do more studying; do less partying; or to shed a habit such as smoking. For several years in our Quality Management course students were asked to work on a term-long personal continuous improvement projects. The students were briefly introduced to basic concepts of causal loop diagrams and were encouraged to use them to clarify their theories regarding their own progress or lack of it. The basic premise is that the result students obtain and the dynamics they experience are built into the structure of their worldview and they learn if they can communicate and influence their worldview. This paper uses systems thinking lens to discuss the improvement framework and the experience reported by students. Majority of students did not make the progress toward their goals as much as they would have preferred. The student generated diagrams to explain their theories were either too simple or overly complicated, awkward and partially flawed. However, it can be claimed that the process of using the tool to clarify their thinking itself was worthwhile. After reviewing their narratives and the diagrams, several archetypes were consistently noted.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- The Advanced Fuel Cycle Initiative is developing a system dynamics model as part of their broad systems analysis of future nuclear energy in the United States. The model will be used to analyze and compare various proposed technology deployment scenarios. The model will also give a better understanding of the linkages between the various components of the nuclear fuel cycle that includes uranium resources, reactor number and mix, nuclear fuel type and waste management. Each of these components is tightly connected to the nuclear fuel cycle but usually analyzed in isolation of the other parts. This model will attempt to bridge these components into a single model for analysis. This work is part of a multi-national laboratory effort between Argonne National Laboratory, Idaho National Laboratory and United States Department of Energy. This paper summarizes the basics of the system dynamics model and looks at some results from the model.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- Past performance may not be a not true indicator of future performance. Everyone has seen this disclaimer at one time or another. Although this may certainly be true, past performance should certainly be considered when planning for the future. Executives are always seeking ways to make decisions that will help their company to perform better. This paper examines a model that was developed to take a companys financial records and transform them into easy to understand trends and long-term predictors. In addition, it allows the user to adjust system parameters to see the long-term effects to performance.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- This study applies system dynamics to explore the long-term influences of multiple policies on handling the financial imbalance of the National Health Insurance (NHI). In order to improve the financial imbalance of the NHI, three policies and three scenarios are proposed. Each policy is evaluated for each scenario. According to the simulation results, the policy of a 20% increase in premium rate, plus a 2% decrease each year in annual rate of change of benefit payments per beneficiary can improve the financial imbalance. However, the benefit payments will be greater than premium revenues from 2008. So, the financial imbalance of the NHI will present again.
-
- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- The National Health Insurance (NHI) program has implemented in Taiwan since March 1995. The initial balance of revenues and expenditures was stable, but there has been a deficit since 1998. As the deficit problem was mostly caused by the payment system of fee-for-service, the Bureau of NHI (BNHI) implemented global budget (GB) payment system. Under GB, the benefit payments were under control as planned. Since the benefit payments from BNHI are the most part of revenues of hospitals, some hospitals have financial imbalance. This study uses system dynamics to explore the strategies of hospitals facing GB and evaluate its effects on hospitals and patients. This research is still ongoing and will reach two achievements. First, submitting the stock-flow diagrams can provide the managers of hospitals to have a further understanding on their strategies. Second, building the model can simulate and evaluate the effects of multiple strategies on hospitals and patients.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- A new solid waste collection model, called MST, has been developed. It is a result of combining System Thinking and Aggregation Theory and it takes into account real world constraints such as collection frequency, labor shifts and both preventive and corrective maintenance. MST is a paradigm shift in solid waste collection systems design and operation. It makes possible a more efficient utilization of resources (vehicles and labor) and it is robust against variability sources. MST is the result of having challenged and invalidated a deeply rooted assumption in all models developed up to date. Simulation and Design Of Experiments were used to compare MST against existing models. Experimental results show significant reduction in the number of trips (Up to 33%), crews (Up to 49%) and vehicles (Up to 40%), which means dramatic operation cost and investment improvements.
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- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- Given that systems thinking is a useful methodology in organization learning, the main purpose of this study was to identify and evaluate how and in what ways we could use systems thinking on curriculum/instruction planning in schools. In this study, we used ethnographic methods of observation and in-depth interviewing to gather information. The study took place in six public elementary schools. The evaluation was focused on the following questions: (a) What happened when the model were used?, (b) What did participants think about using the model in planning and instruction? and (d) In what ways did the use of the model influenced professional development? Evaluation data was collected from three primary sources: (a) principals and administrators interview (b) teachers curriculum, lesson plans, interview, and responses to an attitude survey; and (c) researchers observational notes. Conclusions made based on the results of this study. First, systems thinking can increase the quality of administrator-teacher and teacher-teacher interaction, teachers curriculum/instruction planning, continuous assessment of curriculum/instruction, and immediate and formative feedback. Secondly, it can also decrease overall time required on task of curriculum/instruction designing in the long run. Consequently, it promises curriculum/instruction design with more accountable quality.
-
- Type:
- Document
- Fecha de Creacion:
- 2005 July 17-2005 July 21
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, 3c582e6f5cf305ef0030c7471b499022, and cc5bb0ac12a5b68b26b1583548898dae
- Descripción:
- System dynamics has always held the potential to synthesize and advance theories in social science. Increasingly, social scientists and policy makers are recognizing the importance of complexity and turning to methods like system dynamics, geographic information systems, social network analysis, and agent based modeling. All of these approaches draw on some underlying modeling mathematical framework. This research reports on a method for integrating system dynamics with social network analysis and geographic information systems. The method is then applied to the specific problem of improving city residents perceptions of crime and safety in a model based on existing social theory.