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31 terms

ITGS Chapter 8 - Computer Models and Simulations

Key terms for the ITGS topic 'Computer Models and Simulations'. These relate to chapter 8 of the textbook (www.itgstextbook.com).
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absolute cell reference
In a spreadsheet, a cell reference which does not change when moved.
assumptions
Often made during the construction of a computer model, as part of the simplification process.
car crash model
Used to predict the results of car crashes.
cell format
In spreadsheets, the properties of a cell such as its colour, font, and cell type.
cell range
In spreadsheets, reference to a range of continuous cells.
cell reference
In spreadsheets, a combination of row number and column letter to refer to a single cell (e.g. A2).
centralized processing
Single computer with multiple processors working on a task.
CFD
Computational Fluid Dynamics. A technique used to model airflow in computer models.
climate model
Computer model used to predict possible future climate change.
Computer model
Mathematical representation of the real world using computer software.
Computer simulation
Based on computer models, gives users experience of events such as flying a plane.
Decision Support System
Use of models or expert systems to aid (business) decision making processes.
distributed processing
Use of multiple separate computers working together on a common task.
feedback loop
Comparing the results of a computer model to actual (real life) results, and using the differences to improve the model for the future.
flight simulator
Simulator hardware and software used to train pilots.
formula
In spreadsheets, a combination of cell references and mathematical operations.
full motion platform
Hardware device which can move in many directions to increase the realism of simulators.
function
Built in features of spreadsheets for performing common calculations.
Global Climate Model
Computer model used to predict possible future climate change.
goal seek
Spreadsheet tool used to determine the required values to meet a certain goal.
grid computing
Use of multiple separate computers working together on a common task.
high performance computing
High speed computing using multiple processors
parallel processing
High speed computing using multiple processors
prediction
Output of a computer model.
relative cell reference
In a spreadsheet, a cell reference which updates when moved.
simplification
Difference between a computer model's representation of a process, and the real life process.
spreadsheet
Application software for performing numerical calculations and analysis.
supercomputer
Fastest computers available, capable of performing trillions of calculations per second.
variables
Components of a computer model which can be altered to vary the output.
visualisation
Graphical or animated output from a computer model or simulation.
What-if scenario
Use of a computer model to test the results of different situations and scenarios.