Searched for: subject:"modularity"
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Mao, S. (author)
This thesis explores a modular HV pulse converter technology with short rise and decay times. A systematic methodology to derive and classify HV architectures based on a modularization level of power building blocks of the HV pulse converter is developed to summarize existing architectures and explore new possible architectures.The optimal...
doctoral thesis 2018
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Plugge, A.G. (author), Bouwman, W.A.G.A. (author)
Sourcing literature reveals that large firms bundle or unbundle existing business services by means of modularization to achieve organizational agility. However, one may assume that firms need some degree of maturity to manage the complexity that comes along with bundling modularized services. The aim of our research is to understand how...
conference paper 2017
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Liu, L. (author), Popov, M. (author), van der Meijden, M.A.M.M. (author), Terzija, Vladimir (author)
For the control of high-voltage dc (HVdc) systems, especially for that of the multiterminal HVdc (MTdc) systems, the voltage source converter (VSC) is a good option because of its high controllability. These days, different types of VSC converters have been realized such as the two/three level converter and modular multilevel converter....
journal article 2017
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Tsolaridis, Georgios (author), Kontos, E. (author), Chaudhary, Sanjay K. (author), Bauer, P. (author), Teodorescu, Remus (author)
Grid faults are common in power systems and can have a severe impact on the operation of the converters in the system. In this paper, the operation of a Modular Multilevel Converter (MMC)-based Static Synchronous Compensators (STATCOM) is investigated during grid faults. The study focuses on the challenging internal control of the converter...
journal article 2017
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Gaio, N. (author), van Meer, B. (author), Quiros Solano, W.F. (author), Bergers, L. (author), van de Stolpe, A (author), Mummery, CL (author), Sarro, P.M. (author), Dekker, R. (author)
Organ-on-Chips (OOCs) are micro-fabricated devices which are used to culture cells in order to mimic functional units of human organs. The devices are designed to simulate the physiological environment of tissues in vivo. Cells in some types of OOCs can be stimulated in situ by electrical and/or mechanical actuators. These actuations can mimic...
journal article 2016
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De Andrade, Pedro Pimenta (author), Lagerqvist, Ove (author), Veljkovic, M. (author), Simoes, Rui (author), Lundholm, John (author)
Sweden has a strong demand on the construction of student accommodations and consequently significant efforts have been taken to increase and streamline construction methods. In addition, the fluctuation on the number of students admitted at each year, in each university, lead to periods of house shortage or, in opposition to that, to...
conference paper 2016
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Kassapoglou, C. (author), Rangelov, K. (author), Rangelov, S. (author)
The fabrication cost of composite aircraft structures is revisited and the effect of part size on cost is examined with emphasis on design decisions which affect the ease of (bonded) repair and the total cost of the part and subsequent repairs. The case of moderately loaded stiffened fuselage or wing panels under compression is analysed in...
journal article 2016
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Vergu, V. (author), Neron, P. (author), Visser, E. (author)
The formal definition the semantics of a programming language and its implementation are typically separately defined, with the risk of divergence such that properties of the formal semantics are not properties of the implementation. In this paper, we present DynSem, a domain-specific language for the specification of the dynamic semantics of...
report 2015
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Bas, G. (author), van der Lei, T.E. (author)
The use of modular plants in the chemical industry is expected to make the structure of supply chains more dynamic. The models currently used to get insight in supply chains assume a predefined supply chain structure, as orders are exogenously defined. Consequently, those models cannot grasp the dynamic nature of supply chains with modular...
journal article 2015
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Ting, Y. (author)
This thesis investigated the possibility of increasing the efficiency of a DC-DC converter over a wide load range and a wide input-voltage range based on the Single Active Bridge (SAB) topology with two approaches. The first approach involved making changes to the topology whereas the second made use of the concept of modularity. In the first...
doctoral thesis 2015
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Trajanovski, S. (author)
Community structure is observed in many real-world networks, such as (online) social networks, where groups of friends of a certain person are often also friends of each other. Newman's modularity has been explored as an important quantitative metric for communities and clusters detection in networks. We present a new expressions and bounds for...
doctoral thesis 2014
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Vaswani, V. (author), Loh, S. (author), Tan, B. (author), Singh, K. (author), Srigrarom, S. (author)
Historically, helicopters with four rotors (quad-rotors) have been very uncommon, mainly due to the fact that most of the common payloads could be lifted using one or two rotors. However, the quad-rotor possesses some special characteristics that make it attractive. One would be the superior payload capacity. Two, is the simplicity of the...
conference paper 2014
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Trajanovski, S. (author), Kuipers, F.A. (author), Martín-Hernández, J. (author), Van Mieghem, P. (author)
Modularity is a quantitative measure for characterizing the existence of a community structure in a network. A network's modularity depends on the chosen partitioning of the network into communities, which makes finding the specific partition that leads to the maximum modularity a hard problem. In this paper, we prove that deciding whether a...
journal article 2013
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Bos, R.W. (author), Huisman, T.J. (author), Obers, M.P.W. (author), Schaap, T. (author), Van der Zalm, M. (author)
Background To design a ship its specific design requirements are to be known. These are, together with class notations, specified in previous reports and extended in this report. Since the requirements are formed iteratively, design freedom is possible. This is used to implement several innovations into the design which improve the performance...
report 2013
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Dafermos, G. (author)
My dissertation looks at the Governance Structures of Free/Open Source (FOSS) Development, based on a case study of FreeBSD, a large FOSS project. More specifically, it examines 3 well-known theories. The 1st theory [decreasing returns to scale] holds that increasing the number of persons working together results in a productivity drop due to (a...
doctoral thesis 2012
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Haron, N.Z.B. (author)
Emerging nanoelectronic memories such as Resistive Random Access Memories (RRAMs) are possible candidates to replace the conventional memory technologies such as SRAMs, DRAMs and flash memories in future computer systems. Despite their advantages such as enormous storage capacity, low-power per unit device and reduced manufacturing difficulties,...
doctoral thesis 2012
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Ellenbroek, R.M.L. (author)
The refractive index of air varies a.o. with temperature, humidity, pressure and the CO2 concentration. Due to atmospheric turbulence this refractive index varies both in space and in time, leading to aberrations in images of light having passed though it. These aberrations limit the achievable resolution of optical telescopes such that the...
doctoral thesis 2011
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Lubelli, B. (author), Van Hees, R.P.J. (author), De Clercq, H. (author)
conference paper 2011
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Terlouw, L.I. (author)
doctoral thesis 2011
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Breukel, A. (author), Venselaar, J. (author)
The Fociss (Focussing Innovation for a Sustainable Strategy) approach is a structured method to define core business related issues within sustainable development that require main attention in a specific company. In theory, Fociss has the ability for all kinds of innovations, but the implementation of radical sustainable innovations is often...
conference paper 2010
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