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Delft University of Technology
1.
van Hemert, Dick (author).
Reducing the Carbon Footprint of Logistics Service Providers: A Case Study at DHL Parcel Benelux.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:fe0d0502-1799-491d-88fe-e26f209a1157 
► Parcel deliveries have seen a massive grow over the past several years, mainly in the B2C sector due to rise of online shopping. Due to…
(more)
▼ Parcel deliveries have seen a massive grow over the past several years, mainly in the B2C sector due to rise of online shopping. Due to this growing market more transport movements in the last mile are required. These extra driven kilometers add up to an increase in Greenhouse Gas (GHG) emissions. In a world where the ask for more sustainable operations is on a rise, this can be seen as a problem. Logistics Service Providers (LSPs) are trying to come with solutions to tackle this problem, where most of them are of strategic kind, pushing the outcome to future instead of achieving results in the present. One of the solutions to realize emission reduction is the use of zero-emissions vehicles in the last mile delivery phase. However, current operations of these zero-emissions vehicles are not optimal. For that reason, a model is designed to optimize vehicle allocation to predetermined routes in order to keep the GHG emis- sions to a minimum. This optimization model requires a method on how to determine the GHG emissions values per driven kilo- meter and energy source used by the vehicle. People tend to think solely about CO2 when talking about environmental harming gasses. However, the largest human influence of global warming is not caused by CO2 alone, but through a combination of gasses, summarized under the term greenhouse gasses. The sum of emissions caused by these gasses is standardised with the help of a Global Warming Potential (GWP), and is presented as CO2 equivalents. Calculating and reporting on these GHG emissions can be done according to a variety of methodologies and standards.In order to achieve sector wide comparable results, the EN 16258 standard, issued by the European Committee for Standardization, is used as a guideline to specify emission values. The optimization model is setup to cope with a heterogeneous vehicle fleet. A heterogeneous vehicle fleet is considered a fleet where multiple vehicle types exist with individual characteristics in terms of range and parcel capacity. It also considers the possibility that a vehicle is able to drive multiple routes on a single given day, taking a decreasing range in to account. The effect of the optimization model is determined with the help of adequate Key Performance Indicators (KPIs). These KPIs are total GHG emissions, total energy consumption, capacity utilization, electric vehicle utilization ratio, fuel costs and network performance. The network performance calculates the emitted grams of GHG emissions per parcel. In order to create a more insightful result the result of the KPI is rearranged to represent the number of parcels delivered per kg emitted GHG emissions. The impact of the optimization model on these KPIs was simulated and compared in a LSP’s last mile delivery network. Results from the case study showed that allocating vehicles to routes on a day to day basis, instead of a fixed schedule, improves the environmental impact as the total GHG emissions decreased and the network performance improved. Depots with higher…
Advisors/Committee Members: Atasoy, Bilge (mentor), Schott, Dingena (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: logistics; GHG emissions reduction; Last Mile; Optimization model
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APA (6th Edition):
van Hemert, D. (. (2020). Reducing the Carbon Footprint of Logistics Service Providers: A Case Study at DHL Parcel Benelux. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fe0d0502-1799-491d-88fe-e26f209a1157
Chicago Manual of Style (16th Edition):
van Hemert, Dick (author). “Reducing the Carbon Footprint of Logistics Service Providers: A Case Study at DHL Parcel Benelux.” 2020. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:fe0d0502-1799-491d-88fe-e26f209a1157.
MLA Handbook (7th Edition):
van Hemert, Dick (author). “Reducing the Carbon Footprint of Logistics Service Providers: A Case Study at DHL Parcel Benelux.” 2020. Web. 17 Jan 2021.
Vancouver:
van Hemert D(. Reducing the Carbon Footprint of Logistics Service Providers: A Case Study at DHL Parcel Benelux. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:fe0d0502-1799-491d-88fe-e26f209a1157.
Council of Science Editors:
van Hemert D(. Reducing the Carbon Footprint of Logistics Service Providers: A Case Study at DHL Parcel Benelux. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:fe0d0502-1799-491d-88fe-e26f209a1157
Delft University of Technology
2.
van Alebeek, Sanne (author).
Auction based coopetition in the landside air cargo supply chain: Mathematical model and solution method.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:3a29dcf0-c771-4955-898f-9e0185596653
► Increased competitiveness with other transport systems and declining operation margins have motivated freight forwarders in the air cargo transport industry to look into horizontal collaboration.…
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▼ Increased competitiveness with other transport systems and declining operation margins have motivated freight forwarders in the air cargo transport industry to look into horizontal collaboration. This thesis focuses on developing a fully integrated five phase auction based coopetition model, a form of horizontal collaboration where competition is preserved. A combinatorial auction is used to exchange transportation requests without having to reveal critical company information. Freight forwarders submit requests into an auction pool, where they are grouped into attractive bundles by a central planner and offered for auction. The request selection and bundling procedures, developed in this thesis, are based on the time windows of the request deliveries. A freight forwarder’s bid on each bundle is equal to the marginal profit of that bundle, which is obtained by solving two NP-hard routing problems with a simulated annealing and large neighbourhood search metaheuristic. A unique aspect of the auction, is that the dock capacity of the ground handlers is taken into account, which helps to alleviate truck congestion at the ground handlers. The potential of the auction based coopetition model is shown for an air cargo supply chain scenario. There is a clear increase in profitability for the collaborating freight forwarders, because the auction model decreases the transportation costs for the entire coalition. This cost reduction is achieved by an increase in transport efficiency, while the collaboration disadvantages as seen in literature are limited.
Transport, Infrastructure and Logistics
Advisors/Committee Members: Tavasszy, Lorant (mentor), Bombelli, Alessandro (graduation committee), Rezaei, Jafar (graduation committee), Atasoy, Bilge (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Combinatorial auction; LTL Planning; Collaboration; Competition; Potential; Congestion; Dock Capacity; PDPTW; Request Exchange
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APA (6th Edition):
van Alebeek, S. (. (2020). Auction based coopetition in the landside air cargo supply chain: Mathematical model and solution method. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3a29dcf0-c771-4955-898f-9e0185596653
Chicago Manual of Style (16th Edition):
van Alebeek, Sanne (author). “Auction based coopetition in the landside air cargo supply chain: Mathematical model and solution method.” 2020. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:3a29dcf0-c771-4955-898f-9e0185596653.
MLA Handbook (7th Edition):
van Alebeek, Sanne (author). “Auction based coopetition in the landside air cargo supply chain: Mathematical model and solution method.” 2020. Web. 17 Jan 2021.
Vancouver:
van Alebeek S(. Auction based coopetition in the landside air cargo supply chain: Mathematical model and solution method. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:3a29dcf0-c771-4955-898f-9e0185596653.
Council of Science Editors:
van Alebeek S(. Auction based coopetition in the landside air cargo supply chain: Mathematical model and solution method. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:3a29dcf0-c771-4955-898f-9e0185596653
Delft University of Technology
3.
Meijboom, Jurriaan (author).
Waste reduction in e-groceries fulfilment center: A case study at Picnic.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:c44d3cf6-6aac-43b5-afac-b65b89fcb917
► Food waste is an increasing problem worldwide. Around one third of all produced food is estimated to end up as waste. This has big environmental…
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▼ Food waste is an increasing problem worldwide. Around one third of all produced food is estimated to end up as waste. This has big environmental and economic consequences. In literature, little is known about the causes of waste, its key performance indicators and how to reduce it. Some root causes were found, but none were quantitatively confirmed. E-groceries are a relatively new type of supermarket, that operate on a big scale and have access to detailed data about their customers and their shopping behavior. This data enables detailed quantification of the waste. Picnic is one of these supermarkets, operating in the Netherlands and Germany. A case study focused on reduction of food waste was performed at their fulfilment centers. Also at Picnic, little was known about waste and its causes. This research aims at identifying root causes in a quantitative way and using gained insightsto reduce waste. The research question was: “What are the root causes of food waste at an online supermarket’s fulfilment centres, and how can food waste be reduced?” The case study that was performed consisted of three parts: • An exploratory part, in which data was collected and investigated. Chilled productscaused 80 % of the waste, while only consisting of 20 % of the assortment. • A qualitative part, in which KPIs and expected root causes were identified and hy-potheses generated. Waste amount in units was used as a key performance indicator.Expected root causes were identified for four domains: assortment, supply chain, ful-filment center processes and other. • A quantitative part, in which variables were constructed by means of separate analyses to measure these expected root causes. Twelve variables were constructed for assortment and supply chain related factors. The significance of the hypothesized root causes were tested with multivariate regression tools, focusing only on chilled products. Two data sets have been tested, both on granularity article x fulfilment center x financial period. The first containing the full data, including a majority of zero waste data points. The second containing only waste. All factors showed a significant relationship with waste, in at least one of the regression models, confirming that the identified factors are indeed root causes of food waste. The results were used to improve waste reduction processes at Picnic. The gained insights in root causes ensured effective handling of waste cases: actions could be taken according to the root cause of specific cases. This efficient continuous improvement has led to a waste reduction of 40 %, expressed in costs per item sold.
Advisors/Committee Members: Atasoy, Bilge (mentor), Schott, Dingena (graduation committee), Gorte, Frank (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: food waste; root cause; exploratory data analysis; e-groceries; online supermarket; food supply chain; retail; chilled
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APA ·
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APA (6th Edition):
Meijboom, J. (. (2019). Waste reduction in e-groceries fulfilment center: A case study at Picnic. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:c44d3cf6-6aac-43b5-afac-b65b89fcb917
Chicago Manual of Style (16th Edition):
Meijboom, Jurriaan (author). “Waste reduction in e-groceries fulfilment center: A case study at Picnic.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:c44d3cf6-6aac-43b5-afac-b65b89fcb917.
MLA Handbook (7th Edition):
Meijboom, Jurriaan (author). “Waste reduction in e-groceries fulfilment center: A case study at Picnic.” 2019. Web. 17 Jan 2021.
Vancouver:
Meijboom J(. Waste reduction in e-groceries fulfilment center: A case study at Picnic. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:c44d3cf6-6aac-43b5-afac-b65b89fcb917.
Council of Science Editors:
Meijboom J(. Waste reduction in e-groceries fulfilment center: A case study at Picnic. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:c44d3cf6-6aac-43b5-afac-b65b89fcb917
Delft University of Technology
4.
Caminada, Sytze (author).
Game and Choice Based Simulation: The design of a methodological framework using the case of the Physical Internet inspired “Freight Transportation Game”.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:03007cee-a8cf-4906-8da8-c6e237d5277f
► Serious games have the potential to be used as an innovative data collection method. Combining this with Discrete Choice Modelling (DCM) could create a methodology…
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▼ Serious games have the potential to be used as an innovative data collection method. Combining this with Discrete Choice Modelling (DCM) could create a methodology that provides insight into the player's behaviour and allows for creating a realistic simulation. This innovative Game and Choice Based Simulation (GCBS) methodology has been conducted and evaluated using the case of the Physical Internet inspired “Freight Transportation Game”. The bidding behaviour of players is analysed using DCM. Using the insights obtained from the estimated choice model, a decision support tool for carriers is defined as a policy to optimise the system’s performance. Hereafter, the DCM is implemented into a simulation based on the gameplay, creating a realistic simulation of the PI inspired transportation market. By conducting a simulation experiment with this innovative simulation, the policy could be successfully evaluated. Considering this case of application, the GCBS methodology proved its potential. Using insights obtained during the research, a framework for GCBS has been designed explaining when and how to conduct the methodology. More research needs to be done to test the (external) validity of the decision support tool and to test and extend the methodological framework in order to increase its robustness.
Complex Systems Engineering and Management
Advisors/Committee Members: Tavasszy, L.A. (mentor), Atasoy, Bilge (graduation committee), Bekebrede, Geertje (graduation committee), Lafkihi, Mariam (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Serious Gaming; Discrete Choice Modelling; Simulation; Collecting Choice Data; Physical Internet; Freight Transportation Market; Decision support tool
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APA (6th Edition):
Caminada, S. (. (2019). Game and Choice Based Simulation: The design of a methodological framework using the case of the Physical Internet inspired “Freight Transportation Game”. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:03007cee-a8cf-4906-8da8-c6e237d5277f
Chicago Manual of Style (16th Edition):
Caminada, Sytze (author). “Game and Choice Based Simulation: The design of a methodological framework using the case of the Physical Internet inspired “Freight Transportation Game”.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:03007cee-a8cf-4906-8da8-c6e237d5277f.
MLA Handbook (7th Edition):
Caminada, Sytze (author). “Game and Choice Based Simulation: The design of a methodological framework using the case of the Physical Internet inspired “Freight Transportation Game”.” 2019. Web. 17 Jan 2021.
Vancouver:
Caminada S(. Game and Choice Based Simulation: The design of a methodological framework using the case of the Physical Internet inspired “Freight Transportation Game”. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:03007cee-a8cf-4906-8da8-c6e237d5277f.
Council of Science Editors:
Caminada S(. Game and Choice Based Simulation: The design of a methodological framework using the case of the Physical Internet inspired “Freight Transportation Game”. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:03007cee-a8cf-4906-8da8-c6e237d5277f
Delft University of Technology
5.
van den Boogaard, Raquel (author).
A Decision Support Tool for Strategic Planning of Multimodal Transport Infrastructure: The Case of Brazil.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:256cb467-8dcf-4dcd-b5c3-5f7db7bb8ebe
► The ever increasing need of developing efficient solutions for the transport of cargo, able to reduce transport costs while complying to green policies has promoted…
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▼ The ever increasing need of developing efficient solutions for the transport of cargo, able to reduce transport costs while complying to green policies has promoted the use of multimodal transport during the last decades. Multimodal transport consists of the use of at least two modes of transportation for the transport of cargo from origin to destination. Governments and transport authorities (network planners) seek to make the optimal investment decisions when choosing where to allocate their budgets. To accomplish this they need to predict the response of the formulated policies on the cargo flow distributions over a multimodal network. Cargo flows over a multimodal network are in turn dependent on the behavior of water and land transport companies (network users), aiming in minimizing their own total costs of transportation. This research has developed a Decision Support Tool that is able to model cargo flows over a multimodal network, and predict the changes of cargo flows as a response to network planners policies. The research has used the freight transport network of Brazil as a testing ground for the model, and focused on improvements on the railway infrastructure. The results of the model suggest that the establishment of new railway connections and higher railway operating speeds can reduce the total costs and environmental footprint of transportation over a multi modal network. Finally, according to the model assumptions, it was concluded network users have a preference towards faster railway services.
Transport, Infrastructure and Logistics
Advisors/Committee Members: Tavasszy, Lorant (mentor), Maknoon, Yousef (mentor), Atasoy, Bilge (graduation committee), Demenint, Wouter (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Freight Transport; Multimodal transportation; policy decisions; Railway network
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APA (6th Edition):
van den Boogaard, R. (. (2019). A Decision Support Tool for Strategic Planning of Multimodal Transport Infrastructure: The Case of Brazil. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:256cb467-8dcf-4dcd-b5c3-5f7db7bb8ebe
Chicago Manual of Style (16th Edition):
van den Boogaard, Raquel (author). “A Decision Support Tool for Strategic Planning of Multimodal Transport Infrastructure: The Case of Brazil.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:256cb467-8dcf-4dcd-b5c3-5f7db7bb8ebe.
MLA Handbook (7th Edition):
van den Boogaard, Raquel (author). “A Decision Support Tool for Strategic Planning of Multimodal Transport Infrastructure: The Case of Brazil.” 2019. Web. 17 Jan 2021.
Vancouver:
van den Boogaard R(. A Decision Support Tool for Strategic Planning of Multimodal Transport Infrastructure: The Case of Brazil. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:256cb467-8dcf-4dcd-b5c3-5f7db7bb8ebe.
Council of Science Editors:
van den Boogaard R(. A Decision Support Tool for Strategic Planning of Multimodal Transport Infrastructure: The Case of Brazil. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:256cb467-8dcf-4dcd-b5c3-5f7db7bb8ebe
Delft University of Technology
6.
van den Berg, Seb (author).
Low carbon shipping: A decision support tool for the implementation of CO2 reducing measures.
Degree: 2018, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:b758d9f7-63a0-4ba0-ba97-d7345f46a38e
► In April 2018, the International Maritime Organization (IMO) agreed upon the target to reduce the CO2 emissions from international shipping in 2050 by 50 percent…
(more)
▼ In April 2018, the International Maritime Organization (IMO) agreed upon the target to reduce the CO
2 emissions from international shipping in 2050 by 50 percent with respect to 2008 levels. The strategy to reach this target consists of the ambition to reduce CO
2 emissions per transport work, as an average across international shipping, by at least 40% by 2030, compared to 2008 levels. However, due to uncertainties involved in the decision making on the implementation of CO
2 reducing measures, shipowners are uncertain which actions to take regarding their existing fleet in order to deal with those upcoming requirements. For rail transport, road transport and inland waterway transport, TNO has developed the Multi-level Energy Optimization tool (MEO). For these modalities, MEO is capable of calculating the CO
2 emissions for a certain voyage and assessing the effect of CO
2 reducing measures on the carbon footprint of those voyages. The objective of the research presented in this report is to extend TNO's MEO tool with the maritime modality and develop a tool supporting shipowners in the decision making process regarding the pathway of implementing CO
2 reducing measures in sea-going vessels. The tool presented in this report is developed to meet this objective and is based on a Markov Decision Processes (MDP) model. The MDP method has the ability of optimizing a time dependent decision policy in the face of uncertainty. In this case, the optimal policy resulting from the MDP model is optimized to obtain the highest cost savings by implementing CO
2 reducing measures. For the input of the model, the vessel has to be described by an operational profile and the vessel and engine specifics such as a speed-load curve and the propulsive efficiency. Also, the environment has to be described by fuel properties, economical parameters and a regulatory framework. With this input, the MDP method can assess the optimal policy regarding the implementation of a set of CO
2 reducing measures with the objective of minimizing costs. The output of the tool consists of the expected values of total costs, CO
2 emissions and CO
2 efficiency for when the optimal policy is followed, in comparison to maintain the business as usual. To put this tool in practice, a case study has been carried out on a 93000 DWT bulk carrier of which operational data has been provided by the shipowner. A data analysis on the daily reports of the vessel has been done to obtain the values for the vessel input and literature has been used for the environment input. The optimal policy for a set of measures is assessed and the influence on the results by varying fuel prices, the regulatory framework and the dry dock schedule has been studied. The key result of the case study is that with the implementation of several fuel saving measures and a dual fuel engine the total costs with respect to maintaining the business as usual is expected to be…
Advisors/Committee Members: Hopman, Hans (mentor), Kana, Austin (mentor), Harmsen, Jorrit (mentor), Atasoy, Bilge (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Maritime; Low carbon shipping; CO2 reduction; Markov Decision Processes; Decision support tool
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APA ·
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APA (6th Edition):
van den Berg, S. (. (2018). Low carbon shipping: A decision support tool for the implementation of CO2 reducing measures. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b758d9f7-63a0-4ba0-ba97-d7345f46a38e
Chicago Manual of Style (16th Edition):
van den Berg, Seb (author). “Low carbon shipping: A decision support tool for the implementation of CO2 reducing measures.” 2018. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:b758d9f7-63a0-4ba0-ba97-d7345f46a38e.
MLA Handbook (7th Edition):
van den Berg, Seb (author). “Low carbon shipping: A decision support tool for the implementation of CO2 reducing measures.” 2018. Web. 17 Jan 2021.
Vancouver:
van den Berg S(. Low carbon shipping: A decision support tool for the implementation of CO2 reducing measures. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:b758d9f7-63a0-4ba0-ba97-d7345f46a38e.
Council of Science Editors:
van den Berg S(. Low carbon shipping: A decision support tool for the implementation of CO2 reducing measures. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:b758d9f7-63a0-4ba0-ba97-d7345f46a38e
Delft University of Technology
7.
van der Bles, Roel (author).
A Design Tool for Machinery Space Arrangement.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:6e7a6d44-d293-44f8-a4e6-113423ceec59
► The subject of this master thesis is the development of a design tool to help Vuyk Engineering Rotterdam B.V. arrange the machinery spaces (engine room,…
(more)
▼ The subject of this master thesis is the development of a design tool to help Vuyk Engineering Rotterdam B.V. arrange the machinery spaces (engine room, switchboard rooms, separator rooms) aboard their vessels early in their design process. It applies the field of automatic design generation to a step in Vuyk’s design process to save time and easily explore alternatives. First the general design process at Vuyk and the design of the engine room and other machinery spaces in particular are investigated. This is followed by a review of literature on design of machinery spaces, both in maritime applications in ships and in non-maritime process plant lay-out design, to compare theory and practice at Vuyk and look for new insights. Next to the design process itself, the characteristics of ship concept design tools are investigated in literature, leading to a focus on concept exploration and various methods how to deal multiple objectives. This results in the design requirements for the design tool for machinery space arrangements and a focus on the most relevant requirements to consider in the limited time frame of this thesis, to limit the scope. The best modelling method and resolution approach for the problem are investigated. The Facility Layout Problem and Particle Swarm Optimization algorithm are identified as the best options. The model is defined accordingly. The capabilities of the model for the design tool are tested in a concept design of a jackup vessel. Initial runs of the model led to problems for the Particle Swarm Optimization algorithm, as its gets stuck in local minima while trying to solve the problem. This severely limits the solutions diversity. Several adaptations for the model are developed to overcome this problem. The particle swarm algorithm is adapted with several mutations, allowing it to better escape the local minima thus creating more diverse, better optimized solutions. The model is also improved with an additional grouping constrained and a pathing filter to better account for the identified machinery space design drivers. The resulting tool is applied in a case study on the early concept design phase for a dredge pump room and connected engine room for a trailing suction hopper dredger. The tool is used to evaluate early design choices in space arrangements for a diesel-direct drive of the dredging pump and jet pump, in comparison to alternative diesel-electric solutions with three V16 diesel-generator-sets, four V12 sets or six V8 generator sets. The application of the tool leads to valuable insights for the arrangement options for the machinery spaces. The developed tool is shown to be a useful addition to the early concept design of machiney space arrangement.
Marine Technology
Advisors/Committee Members: Kana, Austin (mentor), Hopman, Hans (mentor), Mayenburg, Nicky (mentor), Atasoy, Bilge (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Early Stage Ship Design; Engine room; Particle Swarm Optimization; Facility Layout Problem; Machinery Arrangement
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APA ·
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Manager
APA (6th Edition):
van der Bles, R. (. (2019). A Design Tool for Machinery Space Arrangement. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6e7a6d44-d293-44f8-a4e6-113423ceec59
Chicago Manual of Style (16th Edition):
van der Bles, Roel (author). “A Design Tool for Machinery Space Arrangement.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:6e7a6d44-d293-44f8-a4e6-113423ceec59.
MLA Handbook (7th Edition):
van der Bles, Roel (author). “A Design Tool for Machinery Space Arrangement.” 2019. Web. 17 Jan 2021.
Vancouver:
van der Bles R(. A Design Tool for Machinery Space Arrangement. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:6e7a6d44-d293-44f8-a4e6-113423ceec59.
Council of Science Editors:
van der Bles R(. A Design Tool for Machinery Space Arrangement. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:6e7a6d44-d293-44f8-a4e6-113423ceec59
Delft University of Technology
8.
Kalff, Helianne (author).
A decision support model for repair scheduling of defect train sets.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:7c9ceae1-ee4f-4b4f-8100-9634bda3bdbe
► Defects that occur on train sets have to be repaired in a repair location and this has consequences on the transportation network. This paper proposes…
(more)
▼ Defects that occur on train sets have to be repaired in a repair location and this has consequences on the transportation network. This paper proposes a decision support model that is developed for optimising the decisions of when and where to repair that defect train set. In practice, there is no clear overview of the effects of such decisions on the overall system. This paper first describes the current decision process including the considerations for decision making. Then a mathematical model is developed and tested with multiple scenarios of varying repairing times and Q times. The results show that the proposed decision support model provides significant improvements compared to the current approach and can save even millions of euros. However, more research is required in order to ensure the real-time performance of the methodology.
Transport Engineering and Logistics
Advisors/Committee Members: Atasoy, Bilge (mentor), van Buuren, Elmer (mentor), Schott, Dingena (graduation committee), Kana, Austin (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Decision support model; Railway network; Rransportation network; Dutch Railways; Repair scheduling; Defects
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APA (6th Edition):
Kalff, H. (. (2019). A decision support model for repair scheduling of defect train sets. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7c9ceae1-ee4f-4b4f-8100-9634bda3bdbe
Chicago Manual of Style (16th Edition):
Kalff, Helianne (author). “A decision support model for repair scheduling of defect train sets.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:7c9ceae1-ee4f-4b4f-8100-9634bda3bdbe.
MLA Handbook (7th Edition):
Kalff, Helianne (author). “A decision support model for repair scheduling of defect train sets.” 2019. Web. 17 Jan 2021.
Vancouver:
Kalff H(. A decision support model for repair scheduling of defect train sets. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:7c9ceae1-ee4f-4b4f-8100-9634bda3bdbe.
Council of Science Editors:
Kalff H(. A decision support model for repair scheduling of defect train sets. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:7c9ceae1-ee4f-4b4f-8100-9634bda3bdbe
Delft University of Technology
9.
Genius Coca, Alba (author).
Implementation of Receiver Preferences in a Parcel Locker Network for Last Mile Deliveries.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:de08f67e-02aa-489a-a2b2-358eb25aff22
► With the current growth of e-commerce, couriers need to serve a bigger demand and it is often the case that receivers are not at the…
(more)
▼ With the current growth of e-commerce, couriers need to serve a bigger demand and it is often the case that receivers are not at the location when their parcel is delivered. The use of parcel lockers is seen as a good option for improving the problem of failed deliveries. However, implementing a parcel locker network has an impact on both couriers and receivers, which still prevents couriers from directly adopting this technology. The aim of this research is to develop a new tool that helps couriers analyse the impact of using a parcel locker network taking also into account receiver preferences to pick up parcels from lockers. An optimization model is combined with a choice behaviour model to determine the trade-offs between delivering to parcel lockers or to end-users, in terms of service level and total transportation costs. In order to solve this model for large instances, an Adaptive Large Neighbourhood Search algorithm has been adapted with operators and criteria specific for the problem presented. Computational experiments were carried in a set of the Solomon instances and show that the problem can be solved efficiently with the proposed algorithm. Moreover, the algorithm was applied in a small delivery area in Rotterdam, showing the sensitivity of the model to the preferences of receivers in the area.
Transport, Infrastructure and Logistics
Advisors/Committee Members: Tavasszy, Lorant (mentor), Maknoon, Yousef (graduation committee), Atasoy, Bilge (graduation committee), van Kempen, Elisah (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Parcel Locker; Routing; Choice Behaviour; ALNS
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APA (6th Edition):
Genius Coca, A. (. (2020). Implementation of Receiver Preferences in a Parcel Locker Network for Last Mile Deliveries. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:de08f67e-02aa-489a-a2b2-358eb25aff22
Chicago Manual of Style (16th Edition):
Genius Coca, Alba (author). “Implementation of Receiver Preferences in a Parcel Locker Network for Last Mile Deliveries.” 2020. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:de08f67e-02aa-489a-a2b2-358eb25aff22.
MLA Handbook (7th Edition):
Genius Coca, Alba (author). “Implementation of Receiver Preferences in a Parcel Locker Network for Last Mile Deliveries.” 2020. Web. 17 Jan 2021.
Vancouver:
Genius Coca A(. Implementation of Receiver Preferences in a Parcel Locker Network for Last Mile Deliveries. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:de08f67e-02aa-489a-a2b2-358eb25aff22.
Council of Science Editors:
Genius Coca A(. Implementation of Receiver Preferences in a Parcel Locker Network for Last Mile Deliveries. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:de08f67e-02aa-489a-a2b2-358eb25aff22
Delft University of Technology
10.
de Boer, Ruben (author).
The impact of routing optimization on the profit of the process for EPS waste collection.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:88a18e4f-4d8c-469c-a415-559a3da2b90c
► In times when there is more and more focus on environmental impact, all aspects must be taken into account. Expanded polystyrene (EPS) is easy and…
(more)
▼ In times when there is more and more focus on environmental impact, all aspects must be taken into account. Expanded polystyrene (EPS) is easy and cheap to produce and has lots of applications because of its properties. These properties however, also make it a hard material to recycle. This paper focuses on a rich mathematical model for the collection of waste EPS in order to improve the recyclability of the material. A real-world scenario is simulated and the result is a model for routing different types of vehicles which can also be used to make strategic decisions.
Mechanical Engineering
Advisors/Committee Members: Wouters, Pierre (mentor), Atasoy, Bilge (mentor), Negenborn, Rudy (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Route planning; MILP; Complex; EPS; Waste
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Manager
APA (6th Edition):
de Boer, R. (. (2019). The impact of routing optimization on the profit of the process for EPS waste collection. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:88a18e4f-4d8c-469c-a415-559a3da2b90c
Chicago Manual of Style (16th Edition):
de Boer, Ruben (author). “The impact of routing optimization on the profit of the process for EPS waste collection.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:88a18e4f-4d8c-469c-a415-559a3da2b90c.
MLA Handbook (7th Edition):
de Boer, Ruben (author). “The impact of routing optimization on the profit of the process for EPS waste collection.” 2019. Web. 17 Jan 2021.
Vancouver:
de Boer R(. The impact of routing optimization on the profit of the process for EPS waste collection. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:88a18e4f-4d8c-469c-a415-559a3da2b90c.
Council of Science Editors:
de Boer R(. The impact of routing optimization on the profit of the process for EPS waste collection. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:88a18e4f-4d8c-469c-a415-559a3da2b90c
Delft University of Technology
11.
van Elsas, Maarten (author).
The Complexity of Stability: In Parallel Processor Scheduling.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:d5db27f8-75c1-4633-ae95-4404a42e03de
► In dynamic scheduling, some of the information about the scheduling problem is learnt during the execution of the schedule. Because of this, creating a low…
(more)
▼ In dynamic scheduling, some of the information about the scheduling problem is learnt during the execution of the schedule. Because of this, creating a low cost schedule that does not have to be changed is impossible in most cases. When changes are made during the execution, focussing solely on the performance of the schedule may result in very large differences between the original schedule and the realised schedule. These differences are undesirable particularly if tasks or resources are human. In order to quantify them, several stability metrics are considered, as well as the performance objective makespan. The complexity of computing these metrics when a single disruption to the duration of one of the tasks occurred is considered. For single machine scheduling problems and constraint programming the complexity of several stability metrics is known. For parallel processor scheduling, very little has been investigated. Optimizing just the stability metrics turns out to be possible in polynomial time. We further show that many of the multi objective optimizations problems that consider both a stability metric and the makespan are strongly NP-complete. For the instances that are not, an algorithm is given. In order to reduce the complexity, reducing the search space to a partial order schedule is investigated. This is a promising method as optimizing the makespan in this reduced search space can be done in polynomial time. Surprisingly, the resulting complexities are the same as those of the original problems.
Advisors/Committee Members: de Weerdt, Mathijs (mentor), Yorke-Smith, Neil (graduation committee), Atasoy, Bilge (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Planning under Uncertainty; Stability; Scheduling Repair; Complexity; Partial Order Schedules
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APA (6th Edition):
van Elsas, M. (. (2019). The Complexity of Stability: In Parallel Processor Scheduling. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d5db27f8-75c1-4633-ae95-4404a42e03de
Chicago Manual of Style (16th Edition):
van Elsas, Maarten (author). “The Complexity of Stability: In Parallel Processor Scheduling.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:d5db27f8-75c1-4633-ae95-4404a42e03de.
MLA Handbook (7th Edition):
van Elsas, Maarten (author). “The Complexity of Stability: In Parallel Processor Scheduling.” 2019. Web. 17 Jan 2021.
Vancouver:
van Elsas M(. The Complexity of Stability: In Parallel Processor Scheduling. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:d5db27f8-75c1-4633-ae95-4404a42e03de.
Council of Science Editors:
van Elsas M(. The Complexity of Stability: In Parallel Processor Scheduling. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:d5db27f8-75c1-4633-ae95-4404a42e03de
Delft University of Technology
12.
Karanasios, Alexandros (author).
The effects of upcoming emission regulations on the selection of suitable prime mover combinations for the future harbour/terminal Rotortug: A decision-support tool.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:90874db6-1123-40d7-b00f-e31ee0781ef5
► Nowadays the interest for environmental issues is steadily gaining ground. Inescapably, the shipping industry, is also called to contribute its fair share towards the reduction…
(more)
▼ Nowadays the interest for environmental issues is steadily gaining ground. Inescapably, the shipping industry, is also called to contribute its fair share towards the reduction of air pollution. Harbour tugboats need to comply both with international but also with local exhaust air emission regulations, which are anticipated to become more stringent in the future. Kotug, is interested to proactively explore suitable powering solutions, which can be applied at its Rotortugs’ newbuilding scheme, to comply with upcoming regulations of the intended port of operation. The goal of this thesis is to develop a decision-support tool to facilitate the selection process between alternative prime mover combinations, based on what is needed in terms of operation while considering technical challenges, environmental performance and economic returns. The effect of a variety of promising alternative fuels matched with suitable prime movers was investigated for the period 2018-2033, which was set as the study’s time horizon. LNG, Methanol, Biodiesel and DME were assessed as feasible solutions. The first two were associated with gas-burning engines, whereas the rest were associated with conventional 4-stroke compression ignition engines, similar to the ones already installed in the existing Rotortugs running on MGO. The environmental performance differs substantially to a conventional prime mover running on MGO. However, to adhere to future stricter regulations in certain sea areas, additional after-treatment systems are necessary. Research indicated three post-treatment solutions are the most effective in limiting the majority of the combustion-related emissions; Selective catalytic reduction, diesel particulate filter and oxidation catalysts. The total environmental fingerprint of a vessel can be however assessed only under the context of its propulsion configuration layout. The operational profile of a tugboat is highly variable, allowing room for the exploitation of different drivetrains than the traditional diesel-direct layout, which could lead in benefits mainly in terms of fuel efficiency and maintenance savings. Three drivetrains were selected; a diesel-electric and two hybrid, based on AC and DC topology. Before deciding to invest on a future boat a ship-owner is expected to be eager to comprehend the cost-related issues between alternatives. Moreover, the already proven design of the diesel-direct Rotortug, complemented by the necessary after-treatment technologies, makes sense to be the first option to consider, provided it complies with the anticipated regulations. This option is considered the baseline case. It is reasonable to compare all other options against the baseline case. To this end, a decision framework based on a techno-economic evaluation is proposed for supporting ship-owners to take informative decisions on investment considerations; Three objectives were set; economic performance, environmental performance and cost-effectiveness. To quantify economic performance a comparative TCO analysis was implemented,…
Advisors/Committee Members: Frouws, Koos (mentor), van Hassel, Edwin (graduation committee), Hopman, Hans (graduation committee), Atasoy, Bilge (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: TCO; GRA; propulsion concept; Prime mover; Decision support tool; decision making; Techno-economic analysis; alternative fuels; after-treatment systems; Cost-effectiveness; emissions reduction potential; Emissions
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APA ·
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Export
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Manager
APA (6th Edition):
Karanasios, A. (. (2019). The effects of upcoming emission regulations on the selection of suitable prime mover combinations for the future harbour/terminal Rotortug: A decision-support tool. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:90874db6-1123-40d7-b00f-e31ee0781ef5
Chicago Manual of Style (16th Edition):
Karanasios, Alexandros (author). “The effects of upcoming emission regulations on the selection of suitable prime mover combinations for the future harbour/terminal Rotortug: A decision-support tool.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:90874db6-1123-40d7-b00f-e31ee0781ef5.
MLA Handbook (7th Edition):
Karanasios, Alexandros (author). “The effects of upcoming emission regulations on the selection of suitable prime mover combinations for the future harbour/terminal Rotortug: A decision-support tool.” 2019. Web. 17 Jan 2021.
Vancouver:
Karanasios A(. The effects of upcoming emission regulations on the selection of suitable prime mover combinations for the future harbour/terminal Rotortug: A decision-support tool. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:90874db6-1123-40d7-b00f-e31ee0781ef5.
Council of Science Editors:
Karanasios A(. The effects of upcoming emission regulations on the selection of suitable prime mover combinations for the future harbour/terminal Rotortug: A decision-support tool. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:90874db6-1123-40d7-b00f-e31ee0781ef5
Delft University of Technology
13.
Borst, Luke (author).
Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:fe21a81d-aa9b-45f3-8b10-c532851fdc6e
► Inefficiency in trucking has both economical and ecological consequences. In literature, horizontal collaboration is identified as one of the most promising solutions to this problem.…
(more)
▼ Inefficiency in trucking has both economical and ecological consequences. In literature, horizontal collaboration is identified as one of the most promising solutions to this problem. However, collaboration is not often encountered in trucking industry, since carriers are hesitant to join collaborations. This is caused by a fear of sharing information and an uneven distribution of requests between carriers. Furthermore, the amount of collaborative gain remains still unclear when dealing with a dynamically changing environment, which is often present. This work aims to fill this knowledge gap. Firstly by developing a vehicle routing problem (VRP) model, which includes dynamic requests, horizontal collaboration and customer satisfaction. Next to that, a solution method is developed which is based on Adaptive Large Neighborhood Search (ALNS). The performance of the implemented method is evaluated with a computational study of 10 instances. The performance is compared with a full information (FI) method and another dynamic method (SI). The FI method evaluates the same instances, with all information known beforehand, thereby acting as a lower bound. The newly developed solution method has shown to perform 39% worse compared to full information, while being able to deal with dynamic requests. The SI method shows an increase of 60% in routing costs when compared with FI. Next the development of the model and solution method, the implemented method is used to investigate the collaborative gain for four levels of collaboration in a dynamic environment. The level of collaboration is expressed by the number of requests that is reassigned between carriers. The results show that up to 23% collaborative gain can be realized in the dynamic setting.
Transport Engineering and Logistics
Advisors/Committee Members: Atasoy, Bilge (mentor), Maleki, Nima (mentor), Wellens, Peter (graduation committee), Negenborn, Rudy (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Collaborative gain assesment; Dynamic Vehicle Routing Problem; Horizontal collaboration; Multi Objective Optimisation
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APA (6th Edition):
Borst, L. (. (2020). Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fe21a81d-aa9b-45f3-8b10-c532851fdc6e
Chicago Manual of Style (16th Edition):
Borst, Luke (author). “Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem.” 2020. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:fe21a81d-aa9b-45f3-8b10-c532851fdc6e.
MLA Handbook (7th Edition):
Borst, Luke (author). “Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem.” 2020. Web. 17 Jan 2021.
Vancouver:
Borst L(. Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:fe21a81d-aa9b-45f3-8b10-c532851fdc6e.
Council of Science Editors:
Borst L(. Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:fe21a81d-aa9b-45f3-8b10-c532851fdc6e
Delft University of Technology
14.
Bakker, Marieke (author).
Ballast for Lifting: A novel lifting method for topsides of offshore platforms.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:216e393e-031a-4d8d-85e2-1f6c354908a9
► Amazing Grace will be needed for the removal of offshore platforms that are out of Pioneering Spirit 's reach. The base case design of Amazing…
(more)
▼ Amazing Grace will be needed for the removal of offshore platforms that are out of Pioneering Spirit 's reach. The base case design of Amazing Grace is an enlarged version of Pioneering Spirit (Figure 1). Amazing Grace uses mainly Quick drop Ballast tanks, releasing a lot of water at once, for lifting. Pioneering Spirit uses mainly a pneumatic-hydraulic system for fast lifting. The idea is to lift bigger platforms with a less complex system. The behaviour of the base case design of Amazing Grace when lifting the upper part of an offshore platform (topside) from its supporting structure (jacket) is studied in this work and the feasibility of the new Quick drop Ballast system is tested. To perform a feasibility study on lifting topsides with Amazing Grace , a set of design requirements is generated. Before using these design requirements, a one tank model is required to simulate the emptying of a tank. The dimensions of an existing Pioneering Spirit Quick drop Ballast tank are used. The model is validated by comparing its output to existing physical test data of emptying the same tank. To lift by means of heave only, a bigger volume is used for the one tank model. Once the Quick drop Ballast concept shows to be feasible, the next step is to introduce waves. Waves are modelled using the linear superposition method. An estimation of the time series duration is done by computing the standard deviation of the heave amplitude. For a converged standard deviation, the time series' minimum length needs to be 1200 seconds. The maximum heave amplitude, derived from another statistical analysis, is applied to the connection plateau (when Amazing Grace connects and starts lifting the topside without creating clearance). The results show that Amazing Grace 's mass, added mass, damping and stiffness (the coefficients of the equation of motion) need to be included to give a more accurate estimation of the dynamics for connecting Amazing Grace to the topside and the possible rebounce to the jacket. Although this is a conceptual study, the dynamics are included to get a better understanding of Amazing Grace 's response. To include the previously mentioned coefficients of the equation of motion, the Cummins equation is implemented. The excitation forces are the sum of the wave- and the Quick drop Ballast force. The Quick drop Ballast force is derived from the one tank model. A convergence study shows which time step is needed for this model to work accurately considering its application. The implementation of the Cummins' equation is verified by showing agreement between time- and frequency domain. A sensitivity analysis is used to show the effect of changing the model's main variables. The peak period has the biggest influence on Amazing Grace 's heave motion. By varying the coefficients of Cummins' equation in the range of 35.5 - 38 meters draught, the computed vessel motions show that the variation of the draught only has little influence. The Quick drop Ballast system is feasible for both the pretension- and fast lift phase when…
Advisors/Committee Members: Wellens, Peter (mentor), van der Eijk, Martin (graduation committee), Atasoy, Bilge (graduation committee), Advani, Sunjoo (graduation committee), Bailly Guimaraes, Helio (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: Ballast; Offshore; Lifting; Topside; Decommissioning
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APA (6th Edition):
Bakker, M. (. (2019). Ballast for Lifting: A novel lifting method for topsides of offshore platforms. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:216e393e-031a-4d8d-85e2-1f6c354908a9
Chicago Manual of Style (16th Edition):
Bakker, Marieke (author). “Ballast for Lifting: A novel lifting method for topsides of offshore platforms.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:216e393e-031a-4d8d-85e2-1f6c354908a9.
MLA Handbook (7th Edition):
Bakker, Marieke (author). “Ballast for Lifting: A novel lifting method for topsides of offshore platforms.” 2019. Web. 17 Jan 2021.
Vancouver:
Bakker M(. Ballast for Lifting: A novel lifting method for topsides of offshore platforms. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:216e393e-031a-4d8d-85e2-1f6c354908a9.
Council of Science Editors:
Bakker M(. Ballast for Lifting: A novel lifting method for topsides of offshore platforms. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:216e393e-031a-4d8d-85e2-1f6c354908a9
Delft University of Technology
15.
Wu, Ting Wei (author).
An Improved Optimization Method to Increase the Truck Planning Efficiency of Landside Air Cargo.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:01a09ace-7326-4b20-9c0d-3de5914c31cf
► Congestion in the landside air cargo supply chain occurs for different concurring reasons. Lack of coordination between freight forwarders, as example, might create truck congestion…
(more)
▼ Congestion in the landside air cargo supply chain occurs for different concurring reasons. Lack of coordination between freight forwarders, as example, might create truck congestion on the ground handler side. Horizontal collaboration between forwarders can be introduced and modeled via mathematical programming to mitigate congestion. Resulting models, which are generally variations of Pickup and Delivery Problem with Time Windows (PDPTW), can be solved to optimality only for small-size instances, and the computation is generally time consuming. We therefore propose a simulated annealing (SA)-embedded adaptive large neighborhood search (ALNS) heuristic to address truck route planning in the landside air cargo supply chain. In this work, we allow the search to visit infeasible time-dependent solutions. Accordingly, the objective function minimizes the feasible solution, where total travel distance cost, total travel time cost and unassigned shipments cost, and the time-dependent violation costs. Computational results are reported for 10 instances that were also solved with a mathematical programming approach. Results shows that the meta-heuristic method performs equally or better than the mathematical model given a computational limit for the latter of 2 hours. In addition, the meta-heuristic method was able to find a feasible solution for those cases where the exact model failed to identify a feasible solution.
Transport, Infrastructure and Logistics
Advisors/Committee Members: Tavasszy, Lóri (mentor), Bombelli, Alessandro (mentor), Atasoy, Bilge (mentor), Janić, Milan (graduation committee), Knoop, Victor (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Landside airport operations; Vehicle Routing; Simulated annealing; Time slack
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APA (6th Edition):
Wu, T. W. (. (2019). An Improved Optimization Method to Increase the Truck Planning Efficiency of Landside Air Cargo. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:01a09ace-7326-4b20-9c0d-3de5914c31cf
Chicago Manual of Style (16th Edition):
Wu, Ting Wei (author). “An Improved Optimization Method to Increase the Truck Planning Efficiency of Landside Air Cargo.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:01a09ace-7326-4b20-9c0d-3de5914c31cf.
MLA Handbook (7th Edition):
Wu, Ting Wei (author). “An Improved Optimization Method to Increase the Truck Planning Efficiency of Landside Air Cargo.” 2019. Web. 17 Jan 2021.
Vancouver:
Wu TW(. An Improved Optimization Method to Increase the Truck Planning Efficiency of Landside Air Cargo. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:01a09ace-7326-4b20-9c0d-3de5914c31cf.
Council of Science Editors:
Wu TW(. An Improved Optimization Method to Increase the Truck Planning Efficiency of Landside Air Cargo. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:01a09ace-7326-4b20-9c0d-3de5914c31cf
Delft University of Technology
16.
Nasir, Mesay (author).
A Firm Population Synthesis Model for Urban Freight Transport Demand Modeling: A Part of Micro-simulation Freight Transport Model for the Province of South Holland.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:ee1d81aa-9ac2-4aec-9439-59a5c0da90e0
► The agent - based modeling of freight transport that captures both the variety of actors and their complex decisions has not made as much progress…
(more)
▼ The agent - based modeling of freight transport that captures both the variety of actors and their complex decisions has not made as much progress as in passenger transport. Efforts towards agent-based models must include firms. However, the synthesis of a firm population in the context of urban freight transport has gotten little attention in literature. This research focuses on synthesis of a firm population for urban freight transport demand model. It uses literature review to define the firm agents and specifies a general population synthesis model based on iterative proportional updating (IPU). The model is then implemented on a case study on the province of South Holland. The utilized data is open, free-of-charge data offered by the Central Bureau for Statistics (CBS) of The Netherlands. The synthesis uses a sample-free, indicator-based approach to initialize the IPU-based model. The results show correlation between firms’ distribution and urban density of neighborhoods for most of the population. However, the suitability of a neighborhood to host a firm type has a more nuanced definition that cannot be encapsulated in a single indicator. More robust, economic-sector specific indicators are needed to disaggregate firm agents to neighborhoods and finer levels. Further research into IPU-based, sample-free firm synthesis models is recommended.
Transport, Infrastructure and Logistics
Advisors/Committee Members: Tavasszy, Lóri (mentor), de Bok, Michiel (graduation committee), Atasoy, Bilge (graduation committee), van Nes, Rob (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Firm Population Synthesis; Micro-simulation; Urban Freight Demand; South Holland; Iterative Proportional; Updating
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MLA ·
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CSE |
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APA (6th Edition):
Nasir, M. (. (2019). A Firm Population Synthesis Model for Urban Freight Transport Demand Modeling: A Part of Micro-simulation Freight Transport Model for the Province of South Holland. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ee1d81aa-9ac2-4aec-9439-59a5c0da90e0
Chicago Manual of Style (16th Edition):
Nasir, Mesay (author). “A Firm Population Synthesis Model for Urban Freight Transport Demand Modeling: A Part of Micro-simulation Freight Transport Model for the Province of South Holland.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:ee1d81aa-9ac2-4aec-9439-59a5c0da90e0.
MLA Handbook (7th Edition):
Nasir, Mesay (author). “A Firm Population Synthesis Model for Urban Freight Transport Demand Modeling: A Part of Micro-simulation Freight Transport Model for the Province of South Holland.” 2019. Web. 17 Jan 2021.
Vancouver:
Nasir M(. A Firm Population Synthesis Model for Urban Freight Transport Demand Modeling: A Part of Micro-simulation Freight Transport Model for the Province of South Holland. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:ee1d81aa-9ac2-4aec-9439-59a5c0da90e0.
Council of Science Editors:
Nasir M(. A Firm Population Synthesis Model for Urban Freight Transport Demand Modeling: A Part of Micro-simulation Freight Transport Model for the Province of South Holland. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:ee1d81aa-9ac2-4aec-9439-59a5c0da90e0
Delft University of Technology
17.
Boers, Luke (author).
Optimisation methods for the multi-period petrol station replenishment problem: A case study at AMCS.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:7a74bf32-342a-4b65-aa9c-718f19b194ba
► 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…
(more)
▼ 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 replenished every day. Mixed-Integer Linear Programming (MILP) models and a decomposition heuristic are proposed as planning methods, which are evaluated with a case study based on a real-life petrol distributor. Variants to these MILP models are proposed for the situations where the inventory is allowed to drop below the safety stock level, where inventory levels need to be minimised and where the service time depends on the delivery quantity. Moreover, to determine delivery quantities, the heuristic uses the new introduced simultaneous dry run inventory policy. An improvement procedure is applied to improve the initial heuristic solution. A commercial solver is able to find solutions for instances with up to 20 stations and 7 days for the MILP models. Exact solutions are found for instances up to 10 stations and 5 days. A heuristic solution was found for the full case study of 59 stations and 14 days, within the time limit of two hours.
Transport, Infrastructure and Logistics
Advisors/Committee Members: Brandt, Jelmer (mentor), Atasoy, Bilge (mentor), Homem de Almeida Correia, Gonçalo (graduation committee), Negenborn, Rudy (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Petrol station replenishment; Inventory routing; Simultaneous dry run; Decomposition heuristic
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Boers, L. (. (2020). Optimisation methods for the multi-period petrol station replenishment problem: A case study at AMCS. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7a74bf32-342a-4b65-aa9c-718f19b194ba
Chicago Manual of Style (16th Edition):
Boers, Luke (author). “Optimisation methods for the multi-period petrol station replenishment problem: A case study at AMCS.” 2020. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:7a74bf32-342a-4b65-aa9c-718f19b194ba.
MLA Handbook (7th Edition):
Boers, Luke (author). “Optimisation methods for the multi-period petrol station replenishment problem: A case study at AMCS.” 2020. Web. 17 Jan 2021.
Vancouver:
Boers L(. Optimisation methods for the multi-period petrol station replenishment problem: A case study at AMCS. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:7a74bf32-342a-4b65-aa9c-718f19b194ba.
Council of Science Editors:
Boers L(. Optimisation methods for the multi-period petrol station replenishment problem: A case study at AMCS. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:7a74bf32-342a-4b65-aa9c-718f19b194ba
Delft University of Technology
18.
Berendschot, Robin (author).
Flettner rotor vessel design optimisation.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:83f8c10d-2407-4107-b545-3ab9bd3b0991
► One of the most promising methods to reduce harmful emissions in shipping is to apply wind-assisted propulsion on ships. Uncertainty about the potential fuel savings…
(more)
▼ One of the most promising methods to reduce harmful emissions in shipping is to apply wind-assisted propulsion on ships. Uncertainty about the potential fuel savings makes ship owners reluctant apply wind-assisted propulsion on a large scale. The goal of this thesis is to develop a method that identifies the aspects of a vessel design, that can be optimised to minimise the payback period of Flettner rotors. This research identifies all cost aspects that are affected by Flettner rotors. Of these cost aspects the fuel costs have the largest influence on the payback period of a Flettner rotor investment. However, these costs are also the hardest to predict in an early design stage. Therefore, this research focusses on determining the fuel savings from Flettner rotors. To determine the fuel consumption of a ship with Flettner rotors, the Performance Prediction Program (PPP) has been developed. The PPP solves the force and moment balance equations in surge, sway, roll and yaw directions, including the physical effects from Flettner rotors. The physical phenomena that are a result of Flettner rotors lead to several operational characteristics whose occurrence could affect the benefits of Flettner rotors: throttling back Flettner rotors, applying constant rudder angles and changing the propeller operating point It is shown that the PPP provides accurate results, in close agreement with on-board measurements. The average savings that are predicted by the PPP differ slightly from the measured savings. The Weather Routing Program (WRP) has been developed to obtain an operational profile of a ship with Flettner rotors. This operational profile is used to determine annual fuel savings, and it determines the occurrence of the operational characteristics. The WRP simulates a ship's operational conditions using historical weather data. It combines the Flettner rotor performance from the PPP and actual sailing schedules as input for voyage simulations. In the voyage simulations the optimal route is calculated with the lowest fuel consumption. If analysis of the WRP results shows that an operational characteristic is significantly affected by Flettner rotors, related design aspects should be optimised. A case study that was performed on a case ship with Flettner rotors. The study demonstrates how the developed methods are used to identify aspects of a vessel design that are interesting to optimise, when Flettner rotors are applied. It was shown that the position of the Flettner rotor on the case ship has significant influence on the operational occurrence of large rudder angles and the corresponding rudder resistance. Choosing the optimal Flettner rotor location ensures adequate manoeuvring capabilities for the ship. With the Flettner rotor on its optimal position, no other measures are required to increase manoeuvring capabilities; no larger or more effective rudders are required, additional appendages do not have to be considered. The operational analysis in the case study also showed that the average engine…
Advisors/Committee Members: Dijkman, Matthys (mentor), Muller, Thijs (mentor), Hekkenberg, Robert (mentor), de Vos, Peter (graduation committee), Atasoy, Bilge (graduation committee), Vlaar, Tim (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Wind-assist; Propulsion; Flettner rotor; Performance prediction; Voyage optimisation; Weather routing
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Berendschot, R. (. (2019). Flettner rotor vessel design optimisation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:83f8c10d-2407-4107-b545-3ab9bd3b0991
Chicago Manual of Style (16th Edition):
Berendschot, Robin (author). “Flettner rotor vessel design optimisation.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:83f8c10d-2407-4107-b545-3ab9bd3b0991.
MLA Handbook (7th Edition):
Berendschot, Robin (author). “Flettner rotor vessel design optimisation.” 2019. Web. 17 Jan 2021.
Vancouver:
Berendschot R(. Flettner rotor vessel design optimisation. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:83f8c10d-2407-4107-b545-3ab9bd3b0991.
Council of Science Editors:
Berendschot R(. Flettner rotor vessel design optimisation. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:83f8c10d-2407-4107-b545-3ab9bd3b0991
Delft University of Technology
19.
van Lochem, Jelmer (author).
Improving Dynamic Route Optimisation by making use of Historical Data.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:554bf03a-b57e-4932-962b-defb4af2e50b
► 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…
(more)
▼ 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, more efficiently is therefore now higher thanever. Few methods exist in the literature which utilise historical data toincrease the efficiency of dynamic fleets of vehicles. This work thereforeproposes a novel anticipatory insertion method which incorporates a set ofpredicted requests to beneficially adjust the routes of a fleet of vehicles, inreal-time. This set of predicted requests is derived, in advance, fromhistorical data by clustering comparable requests and predicting similarrequests when assumed patterns in their occurrence are present. This method iscombined with a developed dynamic vehicle routing solver which makes use of arange of heuristics and adaptive large neighbourhood search. The proposedmethod is evaluated using numerical simulations on a range of real-worldproblem instances with up to 1.655 requests per day. These instances representdynamic multi-depot capacitated pickup and deliver vehicle routing problemswith time windows. The method is compared with several other approaches and inorder to quantify the added value of making use of historical data, the methodis benchmarked against a comparable reactive approach which also makes use ofadaptive large neighbourhood search. It is shown that, by making use of theproposed method, on average, 4,58% less distance is required to be travelled bya fleet vehicles while additionally 3,35% fewer vehicles are required to fulfilthe same set of requests.
Systems and Control
Advisors/Committee Members: Alonso Mora, Javier (mentor), Hellendoorn, Hans (graduation committee), Atasoy, Bilge (graduation committee), van 't Hof, P (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: vehicle routing; dvrp; stochastic vehicle routing; large neighbourhood search; heuristics; local search; ruin & recreate
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
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Manager
APA (6th Edition):
van Lochem, J. (. (2019). Improving Dynamic Route Optimisation by making use of Historical Data. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:554bf03a-b57e-4932-962b-defb4af2e50b
Chicago Manual of Style (16th Edition):
van Lochem, Jelmer (author). “Improving Dynamic Route Optimisation by making use of Historical Data.” 2019. Masters Thesis, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:554bf03a-b57e-4932-962b-defb4af2e50b.
MLA Handbook (7th Edition):
van Lochem, Jelmer (author). “Improving Dynamic Route Optimisation by making use of Historical Data.” 2019. Web. 17 Jan 2021.
Vancouver:
van Lochem J(. Improving Dynamic Route Optimisation by making use of Historical Data. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:554bf03a-b57e-4932-962b-defb4af2e50b.
Council of Science Editors:
van Lochem J(. Improving Dynamic Route Optimisation by making use of Historical Data. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:554bf03a-b57e-4932-962b-defb4af2e50b
. 
Open Access Theses and Dissertations