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-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- The Importance of quality cost benefits is sometimes not fully recognised by industrial managers. Quality cost money. Industrial managers recognize this and tend to be afraid of spending on quality. But quality also earns money. Industrial managers do not seem to be fully convinced of this fact. Unfortunately, even existing literature on the subject does not encourage investing for higher quality. Most of the cost models about quality deal with the quality improvement and the costs associated in achieving the desired level of quality, but fail to incorporate the benefits of improved quality. In this work, an attempt has been made to develop a quality costs model which incorporates the benefits. The quality cost elements have been drawn from various standards sources such as British Standards and American Society for Quality Control publications on quality cost. The benefits from investing for quality are taken from recently published case studies and reports as well as from our own experiences. The elements of quality related activities of design department, such as design standards, training design staff and test equipment are identified. The contribution of each individual element, starting from estimation of looses due to poor design to preventions of poor design is isolated and linked dynamically so that costs and benefits are demonstrated through time. The quality costs and benefits model was developed using the System Dynamics Modelling approach and simulated using the computer software package “Professional DYNAMO Plus”. The simulated results demonstrate the extent to which prevention investment is justified by future earning.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- Environmental management is a complex dynamic process, which involves taking decisions regarding different environmental components and socio-economic agents. Within in the contexts, simulations games are extremely powerful learning tool, allowing the decision maker (player) to formulate and test the results obtained with the implementation of alternative environmental managements strategies, which is often impossible to perform in real situations.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- The problem to be addressed is the dynamics of the chain growth polymerizations process via free radicals. The process consists in a series of chemical reactions by which a macromolecule is formed by the addition of many structural unites called mers. The reactions taking place are initiation, propagation and terminations of the growing macromolecule or molecular chain.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- This paper is the second in a pair presented in this volume. The first paper presents a theoretical view of mental models appropriate for carrying out empirically-based research on system dynamics modeling interventions. Mental models consist of three types of measurable sub-models – end models, means models, and means-ends models. The means-ends models may be thought as containing either detailed “design” logic or much more simple “operator” logic. This paper presents an empirical test of the impact of interventions intended to improve design versus operator logic for 53 participants in a dynamic learning laboratory with a task centering on implementing welfare reform over a simulated twenty year period. Results suggest that providing managers with high level heuristic results from modeling interventions is necessary condition for achieving improvement in system performance. Focusing on operator logic is key to improving managerial performance of dynamic tasks.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- For the past seven years, the modeling group at the University at Albany has been experimenting with techniques for building system dynamics models directly with groups. This paper extends the previously reported work by discussing specifics scripted techniques used to implement the group modeling building approach.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- A social system is unlike a natural system, because its behavior is determined by ethics, values and purposes. Yet it can be compared to a natural system in terms of self-maintenance. To maintain itself, a social system reproduces roles, functions and authorities, not it's basic components, individuals. This is because, social system are purposely designed by human begins for human purposes. The ethics which guides management of social system is a kind of rule ethics relying on rules of behavior, laws, and taboos. The rule ethics and its basic value, rational calculation, disables the possibility of social system to cope with rapid or serve environmental changes. It also creates managerial conflicts which are difficult to solve within the frame of reference of the rule ethics and its association values. These conflicts are results of the tension between: control and semiotic freedom, shared culture and diversity, and command hierarchy and self-organization. To diminish these tensions, we need another kind of ethics, an increased development of human consciousness.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- An optimal control-based decisions support model is developed which allows managers and future managers to gain hand-on experience with product portfolio management in a dynamic micro-world. In this micro-world, they study one of the several scenarios, set objects and importance hierarchies, create action plans and control the system over time en route to their objectives. The system is demonstrated with data from an actual product portfolio management case.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- This paper describes the evaluations results from an unsuccessful case study. In this case study, system dynamics modeling was used to support the development of an implementation plan for a corporate strategy. Three modeling sessions were conducted with senior management, which were unsuccessful. A detailed analysis of the evaluations interviews with several of the participants had identified the main cause for this failure. These causes turn out to be threefold: Firstly, most of the participants were unwilling to discuss openly this politically sensitive issue, secondly several errors were made in project design and thirdly the scope of the strategic issue is at stake was too broad to tackle effectively within the time frame allotted to the project.
-
- Type:
- Document
- Date Created:
- 1994
- Collection:
- System Dynamic Society Records
- Collecting Area:
- University Archives
- Collection ID:
- ua435
- Parent Record(s):
- 23d738ba88f8333bc39725f9cb5bd0b8, c060552994c1527f70693734935660f1, and fe35db792b573af835d96e6eba4759cd
- Description:
- This paper describes the use of System Dynamics (SD) for making a claim for Disruption and Delay. The case concerns design management of a large development project. Extensive group workshops (GDSS) with the managers, based on the cognitive mapping technique and association software tope COPE, showed that the client-contractor interaction process had set up dynamic feedback loops creating Disruption and Delay to the project. In order to qualify the extent of the Disruption and Delay, the cognitive map was transformed into an "influence diagram" and thence through the acquisition of numeric data into a large SD model. The development of the two continued in parallel, informing and checking one another. As well as simply providing explanations of trends and behavior, the SD model had to reproduce the planned and actual out-turns explicitly for it to be a creditable explanatory tool. The paper will draw lessons from the case study on the process of moving from cognitive map to a SD model, and the mutual benefits of joint development, as well as more general lessons about combining soft and hard methods.