- document
-
Ahmad, J.I. (author), Dignum, Marco (author), Liu, G. (author), Medema, G.J. (author), van der Hoek, J.P. (author)Drinking water distribution systems (DWDSs) have been thoroughly studied, but the concept of thermal energy recovery from DWDSs is very new and has been conceptualized in the past few years. Cold recovery results in a temperature increase of the drinking water. Its effects on drinking water quality and biofilm development are unclear. Hence, we...journal article 2021
- document
-
Zhang, Qingzhou (author), Zheng, Feifei (author), Jia, Yueyi (author), Savic, Dragan (author), Kapelan, Z. (author)Real-time hydraulic modelling can be used to address a wide range of issues in a foul sewer system and hence can help improve its daily operation and maintenance. However, the current bottleneck within real-time FSS modelling is the lack of spatio-temporal inflow data. To address the problem, this paper proposes a new method to develop real...journal article 2021
- document
-
Piao, L. (author), De Vries, Laurens (author), de Weerdt, M.M. (author), Yorke-Smith, N. (author)DC distribution systems are a promising alternative to existing AC distribution systems. They connect customers to local energy sources without conversion, thus reducing power losses. However, the unique features of DC impose strict requirements for system operation compared to AC. Within the context of a liberalized energy market, this...journal article 2021
- document
-
Shi, Haoran (author)Drinking water safety is of great concern all around the world. Two strategies can be pursued to maintain biological stable drinking water during distribution in the network: (i) without a residual disinfectant, in which bacterial growth is controlled by very low biodegradable nutrients in the water by extensive pre-treatment and a well...master thesis 2020
- document
-
Kluiters, Lucas (author)This thesis represents the culmination of six months of research into the investment behavior of Dutch DSO’s in the context of the energy transition. Through a combination of interviews, analyses of annual reports and a qualitative analyses based on principal-agent theory, I tried to find the effect of the actor network, regulatory regime and...master thesis 2020
- document
-
Proost, Rick (author)Monitoring software behaviour is being done in various ways. Log messages are being output by almost any kind of running software system. Therefore, learning how software behaves from doing analysis over log data can lead to new insights about the system. However, the number of log messages in a computer system grow fast, and analysing the log...master thesis 2020
- document
-
Valdivia, Diego (author)The rise of e-commerce has led to a congested last-mile delivery paradigm. Increasing customer expectations have pushed carriers into a delivery market with diminishing profitability. Furthermore, the current state of last-mile delivery has high societal costs in congestion and environmental impact. To address these challenges, scientists in the...master thesis 2020
- document
-
Trago, Bas (author)By analysing existing agent-based model (ABM) charging behaviour formalisations, this study evaluates the impact of a new static band-width network tariff structure on charging demand. Additionally, this approach enables a comparative study to reflect upon the susceptibility and value of the ABM method. Based on the simulation results, this...master thesis 2020
- document
-
van Diessen, Martijn (author)Naval ships need to be able to conduct missions in a variety of circumstances. This includes the ability to fulfil specific tasks in a damaged state. Vulnerability reduction measures are taken during the early stage distributed ship system design process, to ensure the availability of the required systems in damaged state. Traditionally these...master thesis 2020
- document
-
Aggarwal, S. (author)Big data applications are becoming more commonplace due to an abundance of digital data and increasingly powerful hardware. One of these classes of hardware devices are FPGAs, which are being used today in various ways such as data centers and embedded systems. High performance, power efficiency, and reprogrammability are the primary reasons...master thesis 2020
- document
-
Speelman, Tim (author)Self-Sovereign Identity (SSI) is a new paradigm in digital identity systems that puts the end-user in control: no other actor manages, permits or revokes their digital existence. TrustChain is an academic peer-to-peer networking stack supporting SSI. It delivers passport-grade assurance by integrating with Dutch government....master thesis 2020
- document
-
van Vliet, J.I.M. (author), van Dijk, J.M.C. (author), de Tombe, L.J. (author), Marang, R.J. (author), van de Brug, W.G. (author)The aim of this project is to improve the scalability of the Opencraft server. The Opencraft server is based on an open-source implementation of the vanilla Minecraft server. This thesis focuses on improving the messaging system of the Opencraft server. The existing implementation of the messaging system is very basic. It went through all online...bachelor thesis 2020
- document
-
Zhang, Qingzhou (author), Zheng, Feifei (author), Chen, Qiuwen (author), Kapelan, Z. (author), Diao, Kegong (author), Zhang, Kejia (author), Huang, Yuan (author)Improving the resilience of water distribution systems (WDSs) to handle natural disasters (e.g., earthquakes) is a critical step toward sustainable urban water management. This requires the water utility to be able to respond quickly to such disaster events, and in an organized manner, to prioritize the use of available resources to restore...journal article 2020
- document
-
van den Bos, Laurens (author)The temperature of drinking water is an important parameter, affecting physical, chemical, biological and aesthetic properties of the water. Currently, measurements exceeding the legal limit of 25ᵒC at the tap are exceptional. However, there are reasons to believe that the number of exceedances will increase due to climate change and...master thesis 2020
- document
-
Marquez Calvo, O.O. (author)The exercise of solving engineering problems that require optimisation procedures can be seriously affected by uncertain variables, resulting in potential underperforming solutions. Although this is a well-known problem, important knowledge gaps are still to be addressed. For example, concepts of robustness largely differ from study to study,...doctoral thesis 2020
- document
-
Huang, Yuan (author), Zheng, Feifei (author), Kapelan, Z. (author), Savić, Dragan (author), Duan, Huan-Feng (author)This paper proposes a multistage method for burst leak localization through valve operations (VOs) and smart demand metering in district meter areas (DMAs) of water distribution systems (WDSs). Each stage includes partitioning of the DMA into two subregions using VOs and identification of potentially leaking pipes within the subregions...journal article 2020
- document
-
Cassottana, Beatrice (author), Aydin, N.Y. (author), Tang, Loon Ching (author)Water Distribution Systems (WDSs) are critical infrastructures for providing water to sustain life and human activities. Some recent trends, such as climate change, urbanization, and increasing system interdependence, have led to more frequent threats, with detrimental effects on WDSs. In recent years, resilience has been considered an effective...conference paper 2020
- document
-
Bhandia, R. (author), de Jesus Chavez, Jose (author), Cvetkovic, M. (author), Palensky, P. (author)A High Impedance Fault (HIF) in the power distribution systems remains mostly undetected by conventional protection schemes due to low fault currents. Apart from degrading the reliability of power supply to customers, HIF can impose a high cost on the utilities due to technical damages. The nonlinear and asymmetric nature of HIF makes its...journal article 2020
- document
-
Sapountzoglou, Nikolaos (author), Lago, Jesus (author), Raison, Bertrand (author)In this paper, a gradient boosting tree model is proposed to detect, identify and localize single-phase-to-ground and three-phase faults in low voltage (LV) smart distribution grids. The proposed method is based on gradient boosting trees and considers branch-independent input features to be generalizable and applicable to different grid...journal article 2020
- document
-
Cozzolino, Vittorio (author), Ott, Jorg (author), Ding, Aaron Yi (author), Mortier, Richard (author)For road safety, detecting and reacting efficiently to road hazards is crucial and yet challenging due to practical restrictions such as limited data availability, which relies on network support. Moreover, from a system perspective we lack a computational model capable of providing to vehicles reliable and real-time assessment of the road...conference paper 2020