Towards more predicted and planned spare parts management: Designing an integrated approach with a focus on demand forecasting, inventory control and supply management

Service logistics companies aim for their high value capital assets to be operationally available, to prevent lost revenues and customer dissatisfaction. To assure this maintenance is performed, and therefore spare parts are required. An important activity is to have spare parts available when they are demanded for conducting maintenance....

Demand forecast for industrial land: Inaccurate and biased?

Interval Forecasting for Airline Passenger Demand: An Application to Airline Network Development

In the past forty years, the volume of air travel has increased tenfold. While demand growth for OECD markets has slowed down in recent years, there is still a potential for markets where air services are currently not provided. It is the goal of the airline network development process to locate these potentially profitable markets. One of the...

Performance Impact of Improved Departure Time Prediction Relative to Sector Demand & Arrival Time Predictability

This thesis deals with traffic forecasts of Airspace Users for Air Navigation Service Providers. Currently there is a high amount of uncertainty in the traffic forecast. Air Traffic Flow Managers anticipate for unforeseen traffic by increasing the forecasted maximum capacity threshold by more than 10%. The European ATM research program SESAR...

Optimised control and pipe burst detection by water demand forecasting

Water demand forecasting The total water demand in an area is the sum of the water demands of all individual domestic and industrial consumers in that area. These consumers behave in repetitive daily, weekly and annual patterns, and the same repetitive patterns can be observed in the drinking water demand. The observations of the water demand...

Advanced control of a water supply system: A case study

Conventional automatic production flow control and pump pressure control of water supply systems are robust and simple: production flow is controlled based on the level in the clear water reservoir and pump pressure is controlled on a static set-point. Recently, more advanced computer-based control methods were developed in which production flow...

Improving the Performance of Water Demand Forecasting Models by Using Weather Input

Literature shows that water demand forecasting models which use water demand as single input, are capable of generating a fairly accurate forecast. However, at changing weather conditions the forecasting errors are quite large. In this paper three different forecasting models are studied: an Adaptive Heuristic model, a Transfer/-noise model, and...

Detecting Pipe Bursts Using Heuristic and CUSUM Methods

Pipe bursts in a drinking water distribution system lead to water losses, interruption of supply, and damage to streets and houses due to the uncontrolled water flow. To minimize the negative consequences of pipe bursts, an early detection is necessary. This paper describes a heuristic burst detection method, which continuously compares...

Long term planning for the water supply system of the Metropolitan Area of Amsterdam under new water saving regimes of the retail customers: Understanding the system and addressing uncertainties

The centralized drinking water supply system of the Metropolitan Area of Amsterdam, operated and owned mainly by Waternet, has high performance indicators and satisfies the full demand for water in the urban grid and surrounding areas on a full cost recovery basis. Social and technological developments, stemming mainly from (i) the increasing...

The Design of a Large Scale Airline Network

Airlines invest a lot of money before opening new pax transportation services, for this reason, airlines have to analyze if their profits will overcome the amount of money they have to invest to open new services. The design and analysis of the feasibility of airlines networks can be done by using the models developed in this thesis. It is...

Spare Parts Demand Categorisation in the Defence Material Organization: Assessing the applicability and effectiveness of theoretical categorization schemes and statistical demand forecasting methods in a real-world setting of weapons systems related spare parts demand

In this thesis the current inventory control at the Defence Material Organisation is analysed in light of the pending implementation of the SAP-ECC/DFPS ERP-system for demand forecasting and inventory control. The scope for this research has been set on the demand forecasting of weapon systems related spare parts under training and peace-time...