Esa an der Universität Trier | Karteikarten & Zusammenfassungen

# Lernmaterialien für Esa an der Universität Trier

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TESTE DEIN WISSEN
What are the limitations of systems analysis model?
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TESTE DEIN WISSEN
1. Simulations for longer time spans are not reasonable 2. Parameter depends on many factors
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TESTE DEIN WISSEN
Exploratory analysis
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TESTE DEIN WISSEN
• Role of particular system elements in the overall model behaviour
• Which model elements have big impact on overall model and which have limited impact
• What are the synergistic effects
• How does model react to disturbance
• Which changes in parameters cause the model to run out of control ?

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TESTE DEIN WISSEN
What is and example of a Dynamic system and why?
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TESTE DEIN WISSEN
A bank account with interest is an example of a Dynamic system, because the amount of money in the account today, gets affected by the interest rate and produces changes in the amount of money in the account.
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TESTE DEIN WISSEN
What does the purpose of a model determines?
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TESTE DEIN WISSEN
the kind of model and its structure
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TESTE DEIN WISSEN
Rules of building a model
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TESTE DEIN WISSEN
• keep system diagrams as simple as possible
• Relationships  between elements must be mathematically defined
• Observe conservation law and maintain consistency in units
• Reservoir values only changed by inflow and outflow

• System diagrams show relationship in a system
• System model quantify relationships in a system and allow system to be explored experimentally
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TESTE DEIN WISSEN
What is a state variable ?
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TESTE DEIN WISSEN
Concentrations (in a common currency) that depend on space and time
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TESTE DEIN WISSEN
What are causal- loop diagrams?
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TESTE DEIN WISSEN
They are diagrams that emphasize feedback loops
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TESTE DEIN WISSEN
What is a Dynamic systems?
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TESTE DEIN WISSEN
It's a system that cointains feedbacks. Which means that present state of the system affects future states.
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TESTE DEIN WISSEN
What are the typpes of models?
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TESTE DEIN WISSEN
physical, verbal, mental, graphic, mathematical, simulation model
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TESTE DEIN WISSEN
What are physical models?
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TESTE DEIN WISSEN
"Near to reallity" copies of objects, which have important technical applications
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TESTE DEIN WISSEN
What kind of elemeents do we integrate in a systems analysis?
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TESTE DEIN WISSEN
A model needs to contain the elements only, that are relevant for the question to answer
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TESTE DEIN WISSEN
What is a system?
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TESTE DEIN WISSEN
• A group of distinct but interrelated elements comprising a unified whole
• May show function arising from the interaction or links between elements
• May show emergent properties or behaviour that can only be understood through the interactions and relationships of the elements of the system
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• 32 Lernmaterialien

## Beispielhafte Karteikarten für deinen Esa Kurs an der Universität Trier - von Kommilitonen auf StudySmarter erstellt!

Q:
What are the limitations of systems analysis model?
A:
1. Simulations for longer time spans are not reasonable 2. Parameter depends on many factors
Q:
Exploratory analysis
A:
• Role of particular system elements in the overall model behaviour
• Which model elements have big impact on overall model and which have limited impact
• What are the synergistic effects
• How does model react to disturbance
• Which changes in parameters cause the model to run out of control ?

Q:
What is and example of a Dynamic system and why?
A:
A bank account with interest is an example of a Dynamic system, because the amount of money in the account today, gets affected by the interest rate and produces changes in the amount of money in the account.
Q:
What does the purpose of a model determines?
A:
the kind of model and its structure
Q:
Rules of building a model
A:
• keep system diagrams as simple as possible
• Relationships  between elements must be mathematically defined
• Observe conservation law and maintain consistency in units
• Reservoir values only changed by inflow and outflow

• System diagrams show relationship in a system
• System model quantify relationships in a system and allow system to be explored experimentally
Q:
What is a state variable ?
A:
Concentrations (in a common currency) that depend on space and time
Q:
What are causal- loop diagrams?
A:
They are diagrams that emphasize feedback loops
Q:
What is a Dynamic systems?
A:
It's a system that cointains feedbacks. Which means that present state of the system affects future states.
Q:
What are the typpes of models?
A:
physical, verbal, mental, graphic, mathematical, simulation model
Q:
What are physical models?
A:
"Near to reallity" copies of objects, which have important technical applications
Q:
What kind of elemeents do we integrate in a systems analysis?
A:
A model needs to contain the elements only, that are relevant for the question to answer
Q:
What is a system?
A:
• A group of distinct but interrelated elements comprising a unified whole
• May show function arising from the interaction or links between elements
• May show emergent properties or behaviour that can only be understood through the interactions and relationships of the elements of the system

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