Searched for: subject:"heuristics"
(1 - 20 of 69)

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van der Schelling, Martin (author)
Algorithmic optimization is a viable tool for solving complex materials engineering issues. In this study, a data-scarce Bayesian optimization model was developed to research the composition of bio-based composites. The proof-of-concept program adjusts the natural materials' weight ratios to optimize towards user-defined mechanical properties....
master thesis 2021
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van Leeuwen, Anouk (author)
The Dutch Railways (NS) is the Dutch national passenger railway operator. They own rolling stock that has to be maintained regularly. One of the maintenance facilities executing regular maintenance on regional trains is the maintenance department (OB) in Leidschendam. The aim of this project is to develop a framework for optimizing the...
master thesis 2021
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Bleker, Lazlo (author)
As of writing this thesis little research has been done in truss layout optimization for multiple design alternatives. A hybrid scheme is proposed in which the fast gradient-based search of the Ground Structure Method (GSM) is employed for the search of optimal topology and size, while a population-based meta-heuristic algorithm explores the non...
master thesis 2021
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Cooke, R.M. (author), Joe, Harry (author), Chang, Bo (author)
Regular vines (R-vines) copulas build high dimensional joint densities from arbitrary one-dimensional margins and (conditional) bivariate copula densities. Vine densities enable the computation of all conditional distributions, though the calculations can be numerically intensive. Saturated continuous nonparametric Bayes nets (CNPBN) are...
journal article 2021
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Scheijen, Guusje (author)
Optimizing supply chain management in hospitals can lead to a significant reduction in costs. One of the supply chain processes that can be optimized is the sterilization of reusable instruments used during surgical procedures. This process takes place at the Central Sterile Supply Department (CSSD) and consists of two main steps, `washing and...
master thesis 2020
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Doolaard, F.P. (author)
Constraint programming is a paradigm for solving combinatorial problems by checking whether constraints are satisfied in a constraint satisfaction problem or by optimizing an objective in a constraint optimization problem. To find solutions, the solver needs to find a variable and value ordering. Numerous heuristics designed by human experts...
master thesis 2020
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Tseremoglou, I. (author)
Cargo airlines' Revenue Management (RM) departments oversee the acceptance/rejection process of incoming bookings. The overarching goal is to accept as many bookings as possible, hence maximizing profit, while avoiding overbooking and offloading of already accepted shipments, to ensure customer satisfaction. This whole process is characterized...
master thesis 2020
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Biemans, Tim (author)
This research aims at determining a suitable order release strategy for a warehouse featuring a shuttle-based storage and retrieval system with multiple goods-to-person picking workstations. These picking workstations facilitate efficient picking; however, current release strategies do not take similarity between orders into account, while this...
master thesis 2020
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Sun, B. (author), van Kampen, E. (author)
A novel adaptive dynamic programming method, called incremental model-based global dual heuristic programming, is proposed to generate a self-learning adaptive flight controller, in the absence of sufficient prior knowledge of system dynamics. An incremental technique is employed for online local dynamics identification, instead of the...
journal article 2020
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Boers, Luke (author)
The petrol distribution problem is well-known in the literature as the Petrol Station Replenishment Problem (PSRP). This research concerns a "rich" version of the multi-period PSRP with real-life characteristics, to represent the complexity of the practical problem. The planning is optimised over multiple days, since stations do not need to be...
master thesis 2020
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Guo, W. (author), Atasoy, B. (author), Beelaerts van Blokland, W.W.A. (author), Negenborn, R.R. (author)
Hinterland intermodal transportation is the movement of containers between deep-sea ports and inland terminals by using trucks, trains, barges, or any combination of them. Synchromodal transportation, as an extension of intermodal transportation, refers to transport systems with dynamic updating of plans by incorporating real-time information...
journal article 2020
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Islam, Muhammad Nazrul (author), Bouwman, W.A.G.A. (author), Islam, A. K.M.Najmul (author)
Computer interface signs, such as navigational links, thumbnails, small images, command buttons, symbols, icons, etc., which serve as communication artifacts between designers/systems and users, constitute an under-researched area. To design and evaluate intuitive interface signs, the Semiotic Interface Sign Design and Evaluation (SIDE)...
journal article 2020
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Spadini, D. (author), Calikli, Gul (author), Bacchelli, A. (author)
In contemporary code review, the comments put by reviewers on a specific code change are immediately visible to the other reviewers involved. Could this visibility prime new reviewers’ attention (due to the human’s proneness to availability bias), thus biasing the code review outcome? In this study, we investigate this topic by conducting a...
conference paper 2020
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Fazi, S. (author), Fransoo, Jan C. (author), Van Woensel, Tom (author), Dong, Jing Xin (author)
In this paper, we will study a typical problem in inland container shipping, concerning the barge transportation of maritime containers between a dry port and a set of seaport terminals. The barges depart from the dry port and visit a set of sea terminals, where containers need either to be dropped off or picked up. The goal is to achieve...
journal article 2020
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Boers, Luke (author), Atasoy, B. (author), Homem de Almeida Correia, G. (author), Negenborn, R.R. (author)
We present a “rich” Petrol Station Replenishment Problem (PSRP) with real-life characteristics that represents the complexities involved in actual operations. The planning is optimised over multiple days and therefore, the new variant can be classified as the Multi-Period Petrol Station Replenishment Problem (MP-PSRP). A Mixed Integer Linear...
conference paper 2020
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Tilli, Federico (author)
Wind turbine placement in a wind farm can be optimized to limit power losses due to wakes and improve the economic value of the plant. Seeing as wind farms are increasing in number and size, fast methods to generate good quality layouts can be beneficial for designers. Wind Farm Layout Optimization (WFLO) consists in finding a layout that...
master thesis 2019
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Sikkes, Louis (author)
This thesis has researched the automation of performance evaluation of vehicle routing heuristics. The trade-off between solution quality, which is composed of multiple variables, and runtime make performance evaluation challenging. Therefore, it is often done by human experts. The research question of this thesis is: “How can we determine a...
master thesis 2019
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Hampsink, Joris (author)
Scheduled aircraft maintenance consists of a set of work tasks to be executed. This thesis focuses on improving the order in which these work tasks are executed. Because finding an optimum for these kind of problems is computationally intensive, the chosen approach is of heuristic nature, which is a practical method resulting in close-to-optimal...
master thesis 2019
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Hu, Q. (author)
This thesis discusses the connection between container terminals and the hinterland railway system. Mathematical models are proposed to formulate the various relevant operations and methods are developed to provide solutions to improve the system performance. This thesis could provide suggestions to decision maker(s) regarding to the improvement...
doctoral thesis 2019
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van Lochem, Jelmer (author)
In thedynamic world we live in, the transportation of people and goods in a reliable,efficient and timely manner has grown to be more important than ever. Roads andcities are becoming more congested and the impact of greenhouse gasses canalready be observed. The need for controlling transportation systems, andspecifically fleets of vehicles,...
master thesis 2019
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