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van Poelgeest, Remco (author)The summer of 2018 was one of the hottest and driest summers since the start of measurements by the Dutch weather service in 1900. This lead to forest fires, problems for farmers and extreme low water levels. The Rhine at Lobith recorded an all-time low water level and also the Ijssel an Meuse rivers recorded extreme low water levels. This...master thesis 2020
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Surve, Madhura (author)Even after many developments in project management tools and techniques, there is still a loophole in the traditional approaches, due to which it is no longer effective for managing projects in a dynamic environment. As a result, there is a rising urge amongst the practitioners to implement flexible approaches in large complex projects for its...master thesis 2020
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van Adrichem, Wouter (author)A ship lock scheduling model called LOSCO was developed in order to decrease passage times at locks with two parallel chambers. Three locks were chosen to model, as they are some of the busiest locks of the Netherlands. The Krammersluizen, the Sluizen Hansweert and the Kreekraksluizen. Passage times are not collected at the locks, therefore the...master thesis 2020
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de Wit, Edward (author)In this research an effort is made to contribute to the goals of the Betonakkoord. This is done by optimising the design of big and bulky structures consisting out of a lot of concrete, namely lock heads. Lock heads are part of the navigation lock. The main research question answered in this thesis is phrased as follows: How can the design of...master thesis 2020
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Beloqui Larumbe, L. (author), Qin, Z. (author), Bauer, P. (author)A voltage imbalance at the AC terminals of a three-phase inverter creates a ripple in the power signal on the DC side. In order to minimize this ripple, several techniques can be applied, in which a double Synchronous Reference Frame (SRF) current control structure is very typical. In this approach, both the positive and negative sequence...conference paper 2020
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Ding, Ming (author), Zhou, Zhihao (author), Traferro, Stefano (author), Liu, Yao Hong (author), Bachmann, Christian (author), Sebastiano, F. (author)This paper presents a wakeup timer in 40-nm CMOS for Internet-of-Things (IoT) applications based on a bang-bang Digital-intensive Frequency-Locked Loop (DFLL). A self-biased Σ Δ Digitally Controlled Oscillator (DCO) is locked to an RC time constant via a feedback loop consisting of a single-bit chopped comparator and a digital loop filter,...journal article 2020
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Gong, S. (author), Komen, I. (author), Alpeggiani, F. (author), Kuipers, L. (author)Valley pseudospin has emerged as a good quantum number to encode information, analogous to spin in spintronics. Two-dimensional transition metal dichalcogenides (2D TMDCs) recently attracted enormous attention for their easy access to the valley pseudospin through valley-dependent optical transitions. Different ways have been reported to read...journal article 2020
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Manzaneque Garcia, T. (author), Steeneken, P.G. (author), Alijani, F. (author), Ghatkesar, M.K. (author)Resonant sensors determine a sensed parameter by measuring the resonance frequency of a resonator. For fast continuous sensing, it is desirable to operate resonant sensors in a closed-loop configuration, where a feedback loop ensures that the resonator is always actuated near its resonance frequency, so that the precision is maximized even in...journal article 2020
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Verhoog, Thomas (author)In this research project, an attempt is made to fuse the fields of structural mechanics and machine learning. The goal is to find out if models can be created that are capable of predicting the outcomes of (nonlinear) finite element analyses. These models are created by means of Artificial Neural Networks, which is a powerful method in the...master thesis 2019
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Chen, Peng (author), Zhang, Feifei (author), Zong, Z. (author), Hu, Suoping (author), Siriburanon, Teerachot (author), Staszewski, R.B. (author)This article proposes a power-efficient highly linear capacitor-array-based digital-to-time converter (DTC) using a charge redistribution constant-slope approach. A fringe-capacitor-based digital-to-analog converter (C-DAC) array is used to regulate the starting supply voltage of the constant discharging slope fed to a fixed-threshold...journal article 2019
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Kremers, Arjen (author)Offshore wind power plants are subject to adverse electrical conditions that are more severe than onshore cases, due to the long cable connection to the shore. Among these conditions are amplified voltage distortion at (inter)harmonic frequencies, as well as stability issues. An important aspect of wind turbine generator control is the phase...master thesis 2019
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Kemper, Arno (author)The operation and maintenance of most of the Dutch primary navigation locks are the responsibility of Rijkswaterstaat. The portfolio of Rijkswaterstaat consists of 52 primary navigation locks that are part of the primary flood defence. All these navigation locks are assigned a safety norm together with the adjacent water-retaining bodies. For...master thesis 2019
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van Olst, Bart (author)Summary<br/>In the twentieth century a substantial number of navigation locks were build in the Netherlands. The navigation locks built in that era mostly had a life span of 80 to 100 years. This means that in the coming years most of these locks will be in need of either renovation or replacement. Rijkswaterstaat, the administrator of most of...master thesis 2019
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Aït El Mehdi, Nourdin (author)The costs and damages that result from cyber security weaknesses are increasing year by year. The cybercrime economy has grown to acquire $600 billion in profits every year, nearly one percent of the global GDP according to a study made by The Center for Strategic and International Studies (CSIS), in collaboration with McAfee. This is likely to...master thesis 2019
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Preda, Valeria (author)Smart temperature sensors can be used for the temperature compensation of micro-electromechanical (MEMS) frequency references. From the different types of CMOS temperature sensors, resistor-based sensors are currently the most energy-efficient. However, compared with bipolar transistor (BJT)-based temperature sensors, resistors suffer from...master thesis 2019
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Does, Luc (author)In this thesis, the design and implementation of an improved current controller for grid-tied converters is discussed. Using this improved current controller, a power factor correction test platform achieves practically zero AC and DC error in steady-state. The power factor corrector accomplishes this by utilizing the parallel combination of a...master thesis 2019
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Vehmeijer, Leonore (author)The main aim of this research was to establish which measures are significant in reducing the CO2 emission levels on the waterways between Rotterdam and Antwerp.master thesis 2019
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Newadj, Kiren (author)Clean drinking water is still not widely available around the globe and therefore remains an unsolved issue. In fact, 1 in 9 people lack daily access to safe water and sanitation. Groundwater is a water supply source that needs minor treatment and thereby presents itself as a good solution to this global issue. Especially in development...master thesis 2019
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Hendrikse, H. (author), Koot, Jasper (author)Ice-induced vibrations have to be considered in the design of vertically sided offshore structures which may encounter drifting sea or lake ice during their lifetime. One particular aspect is the contribution of ice-induced vibrations to the fatigue of such structures. Estimation of the duration of events is often difficult, due to limited...conference paper 2019