AE$$23-20 Airline Planning And Optimisation at Delft University Of Technology | Flashcards & Summaries

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Lernmaterialien für AE$$23-20 Airline Planning and Optimisation an der Delft University of Technology

Greife auf kostenlose Karteikarten, Zusammenfassungen, Übungsaufgaben und Altklausuren für deinen AE$$23-20 Airline Planning and Optimisation Kurs an der Delft University of Technology zu.

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Scope Tactical decisions:

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– From 1 year to 1 month in advance – Readjust to the market situation – Maximize the potential revenue generated by resources

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Scope Operational decisions:

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– From 4 weeks to 1 day before the day of operations – Control daily operation – mitigate additional costs

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Air travel demand is defined for an

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OD market

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supply is offered by

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flight leg

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Spoilage

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is the effect of not fulfil the entire capacity of the aircraft, given the low demand with regard to the capacity offered

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Spillage

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is the effect of losing demand given that there was not enough capacity provided - some potential passengers are “lost”

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Definition of ARMA how does it work

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Autoregressive moving average


- A linear combination of an autoregressive model with a moving-average model

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The existing demand models can be divided in:

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1.Qualitative

2.Quantitative

a.Time series

b.Causal

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Time-series projections:

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- the technique most widely used by airlines 

- establish the relationship between traffic (the dependent variable) and time (the independent variable)

 - involves a projection into the future of has happened in the past 

- Assumes that whatever factors affected demand in the past will continue to operate in the same manner in the future

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Trend projections:

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-Simple (linear) trend

-Average rate of growth or exponential trend

-Calibration - done using Ordinary Least Squares (OLS)

-Goodness of fit (coefficient of determination R2)

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Name some causal methods for forecasting.

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Regression models (or econometric models)


Gravity models (particular regression model formulation)

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Scope of Strategic decisions:

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From 10 to 1 year in advance – Definition of the strategy (vision) – Match resources (supply) with forecasted demand

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Beispielhafte Karteikarten für deinen AE$$23-20 Airline Planning and Optimisation Kurs an der Delft University of Technology - von Kommilitonen auf StudySmarter erstellt!

Q:

Scope Tactical decisions:

A:

– From 1 year to 1 month in advance – Readjust to the market situation – Maximize the potential revenue generated by resources

Q:

Scope Operational decisions:

A:

– From 4 weeks to 1 day before the day of operations – Control daily operation – mitigate additional costs

Q:

Air travel demand is defined for an

A:

OD market

Q:

supply is offered by

A:

flight leg

Q:

Spoilage

A:

is the effect of not fulfil the entire capacity of the aircraft, given the low demand with regard to the capacity offered

Mehr Karteikarten anzeigen
Q:

Spillage

A:

is the effect of losing demand given that there was not enough capacity provided - some potential passengers are “lost”

Q:

Definition of ARMA how does it work

A:

Autoregressive moving average


- A linear combination of an autoregressive model with a moving-average model

Q:

The existing demand models can be divided in:

A:

1.Qualitative

2.Quantitative

a.Time series

b.Causal

Q:

Time-series projections:

A:

- the technique most widely used by airlines 

- establish the relationship between traffic (the dependent variable) and time (the independent variable)

 - involves a projection into the future of has happened in the past 

- Assumes that whatever factors affected demand in the past will continue to operate in the same manner in the future

Q:

Trend projections:

A:

-Simple (linear) trend

-Average rate of growth or exponential trend

-Calibration - done using Ordinary Least Squares (OLS)

-Goodness of fit (coefficient of determination R2)

Q:

Name some causal methods for forecasting.

A:

Regression models (or econometric models)


Gravity models (particular regression model formulation)

Q:

Scope of Strategic decisions:

A:

From 10 to 1 year in advance – Definition of the strategy (vision) – Match resources (supply) with forecasted demand

AE$$23-20 Airline Planning and Optimisation

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