A Stochastic Discrete Event Simulation of Airline Network and Maintenance Operations

The complexities associated with airline operations require operations planning to be divided into multiple problems solved sequentially by the respective departments: (1) network planning, and (2) maintenance planning. <br/>Furthermore, airline operations take place in an intrinsically uncertain environment, which requires the development of...

Analysing the cost-effectiveness of predictive maintenance programs using a simulation cost model: A case study for the vacuum compressor pumps at Duyvis

In this thesis, a simulation cost model is presented that can be used to assess the cost-effectiveness of a selection of PdM programs. The proposed model combines a discrete event simulation (DES) model with a cost model. It is specifically designed to analyse the PdM programs for the vacuum compressor pumps at Duyvis. All the PdM programs...

Reducing waiting times at out-of-hours general practitioner departments: A data-driven simulation modelling and optimization study

The pressure on healthcare systems is increasing all over the world. With an ageing world population, the costs for healthcare and the shortages in medical staff are continually increasing. In the Netherlands, out-of-hours general practitioner departments, or ‘huisartsenposten’, suffer from this increasing pressure in their telephone triage...

Modelling the installation of offshore wind farms: Defining the installation of offshore wind submarine power cables using a discrete event simulation based logistics model

A gap in the understanding of offshore wind submarine power cables is responsible for 70-80 % of failures in recent times. The failures originate from the phases of design, manufacturing, installation and operations. Joint industry collaborations such as the Cable Lifetime Monitoring project that form the background for this thesis, are aimed at...

Identifying and improving the internal and external information exchange for shipbuilding processes

To identify and improve the communication or information flow for a ship production process, this thesis provides an approach to use a Discrete Event Simulation (DES) model, based on Petri Net technique. By establishing a theoretical framework, the different simulation modelling options are analysed and based on practical requirements, a choice...

Computational Strategies for Model Predictive Control on Switching Max-plus Linear Systems

A switching max-plus linear model is a framework to describe the discrete dynamics of the timing of events. To influence these systems one can choose the routes of jobs and the orderings of operations as input for the system. In this thesis the techniques of model predictive control are used to find good input values. The problem of finding the...

Synchronized quantum network emulator using discrete event simulation

Port Call Efficiency Optimization, Using Data Analysis, Process Mining and Discrete Event Simulation

Port call efficiency (PCE) is an important factor in the port choice of shipping lines. This research strives to contribute to the current work on PCE optimization. This is done by applying relative new techniques on port call related data. A combination of process mining (PM) and discrete event simulation (DEVS) is explored, with the Port of...

Aligning logistics with MRO to improve spare parts availability: A case study at KLM Engineering & Maintenance

Aircraft component maintenance, repair, and overhaul (MRO) outsourcing is a rather new phenomenon. Nowadays, component support solutions that are flexible with predictable cost are pursued. In other words, the time to restore and cost of MRO are aimed to be minimised. This research project is collaboration with one of the worlds leaders in...

Reducing disturbances on the sunflower oil production at the Cargill Multiseed

This research addresses a problem at Cargill Multiseed, where a gap exists between the desired performance of the production of sunflower oil and the current. This research is performed to improve the stability of the production process by removing the disturbances. After identifying the restrictions on the input and output of the production...

Performance evaluation tool for the expansion of a port's container network by an offshore modular platform

The Space@Sea platform is a sustainable offshore modular platform designed for a workspace at sea as an effort in coping up with the economic growth and allocating marine resources to more efficient uses. There are four potential applications of the platform: farming, transport &amp; logistics hub, energy hub, and living spaces. In the case of...

Analysing the expected performance and effects of combined automated sorting for an air cargo hub on an operational level: Assessing stated specifications & functional requirements using a modelling approach in a case study at the KLM Cargo EPS department

The increasing scarcity of surface area around airports can cause conflicts between the various stakeholders if one of the stakeholders likes to expand. In order to use the available area as efficient as possible, air cargo companies such as KLM Cargo must find a sustainable solution to remain competitive in the market. Combining two separate...

Towards the Optimal Inventory Review Intervals: A simulation study into the effect of inventory review intervals on the supply chain performance of a single-product company

Inventory management is one of the cornerstones of supply chain management as inventory consists of a key contributor in all supply chains. In the supply chain sector, many inventory management-related problems have been broadly investigated and discussed over the years. It is of great importance for the supply chain of a company to make proper...

Pollution in manufacturing: An unavoidable incidence?: A simulation study into cross-contamination effects in a multi-product factory

Companies can lose a substantial portion of their revenues due to deterioration in value of their products as a result of processing impediments, which might occur in the entire supply chain. Sometimes, the reasons for a decline in product quality are not fully understood, and thus there are no appropriate measures taken to prevent it. Yet, it...

Robustness of hinterland container transportation

Containerisation has dramatically changed international transportation; it has affected the speed and costs of the transportation of goods. The largest share of costs of container transportation is related to inland transportation. The performance of the container transportation chain as a whole determines its competitive position. Disruptive...

Cargo Driven Intermodal Transportation: A new concept to improve container hinterland transportation

Multidisciplinaire zorg voor kwetsbare ouderen: Ontwerp en capaciteitsbepaling van een poliklinisch proces in het Reinier de Graaf Gasthuis

The Reinier de Graaf Hospital in Delft has concluded that care for frail elderly with impaired mobility is not always optimal. Due to multimorbidity, traditional monodisciplinary care is not the best possible care. The Reinier de Graaf Hospital set out to improve their care process to serve the frail elderly best. It was found that the target...

Youth care waiting list dynamics: A discrete Event Simulation approach

The Dutch youth care sector defends and supports children in their maturing process. Over last decades this complex and heavily resource bound health care system faced long waiting lists and over utilized resources. Various policies based on increasing budgets and care capacities did not result in the expected structural waiting list decreases....