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Appelman, Tycho (author), Bruinsma, Carli (author), Ouaissa, Anass (author)Lunar dust presents a serious problem for future lunar rovers. Due to the charged nature of this fine dust, it tends to stick to sensitive elements like solar panels. It is clear that a system needs to be implemented in order to remove lunar dust to keep the output power of the solar panel at a satisfactory level. This paper develops the proof...bachelor thesis 2023
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Tobiska, W. Kent (author), Pilinski, Marcin (author), Bruinsma, Sean L. (author), Sutton, Eric (author), Knipp, Delores (author), Mallik, Vishnuu (author), Jagatia, Bhavi (author), Siegers, Mike (author), Siemes, C. (author)In Low Earth Orbit (LEO), atmospheric drag is the largest contributor to trajectory prediction error. The current thermospheric density model used by the Combined Space Operations Center (CSpOC) in operations is the High Accuracy Satellite Drag Model (HASDM). Since HASDM is not available for use outside of the US Government, satellite operators...conference paper 2023
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Siemes, C. (author), Borries, Claudia (author), Bruinsma, S. (author), Fernandez-Gomez, I. (author), Hladczuk, N.A. (author), van den IJssel, J.A.A. (author), Kodikara, T. (author), Vielberg, K. (author), Visser, P.N.A.M. (author)We present new neutral mass density and crosswind observations for the CHAMP, GRACE, and GRACE-FO missions, filling the last gaps in our database of accelerometer-derived thermosphere observations. For consistency, we processed the data over the entire lifetime of these missions, noting that the results for GRACE in 2011- 2017 and GRACE-FO...journal article 2023
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Oldenziel, G. (author), Moreno-Rodenas, A. (author), Bruinsma, N. (author), Bakker, W. (author)Spatio-temporal wave patterns due to wave field–structure interaction can be very complex to measure and analyze when using (intrusive) point probes. Free-surface field measurements can offer much needed insight in this domain. Nevertheless, to the best of the authors’ knowledge, these methods are rarely used in experimental offshore...journal article 2023
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Mehta, Piyush M. (author), Paul, Smriti N. (author), Crisp, Nicholas H. (author), Sheridan, Philip L. (author), Siemes, C. (author), March, G. (author), Bruinsma, Sean (author)Satellite drag modeling remains the largest source of uncertainty affecting space operations in low Earth orbit. The uncertainty stems from inaccurate models for mass density and drag coefficient. Drag coefficient modeling also impacts scientific knowledge on the physics and dynamics of the upper atmosphere through the estimation of high...journal article 2022
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Bruinsma, Sean (author), Siemes, C. (author), Emmert, John T. (author), Mlynczak, Martin G. (author)The quality and distribution in time and space of available atmospheric observations are crucial for the accuracy of semi-empirical thermosphere models. However, datasets can be inconsistent, and their qualities and resolutions are often unequal. The main thermospheric density datasets of this century are briefly described and then compared...journal article 2022
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Bruinsma, Floris (author)The objective of this project is to devise and develop a design tool that lets the user explore different force flows during conceptual design, with the goal to inform different geometries, thereby realizing an integrated design process. Key characteristics that this tool must incorporate to be successful are defined as feedback (the ability to...master thesis 2021
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Janssen, H.J. (author), Bruinsma, Gerben J.N. (author), Weerman, Frank M. (author)The aim of the current study is to provide an empirical test of containment theory of Walter Reckless (1899–1988). The theory proposes that outer and inner containment hold adolescents back from delinquency even when external factors pull and push them toward it. This early control theory was ahead of its time, but never received the...journal article 2021
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Bruinsma, Quinten (author)The ever increasing demand for faster data rates combined with the need for higher levels of integration, while keeping the production and operation cost to a minimum leads to the requirement of an efficient high bandwidth digital transmitter architecture. With the shortcomings of both polar and cartesian architectures, a new architecture is...master thesis 2020
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Bruinsma, Simme (author)Everybody knows concrete.... the building material that ones meant the future. Imagine it’s most extreme forms. I’m thinking of Sovjet concrete sculptures! Brutalist Architecture! And then think about what it would take to break parts of these adement concrete structures down. That is what this project is all about. <br/>Welcome to ‘A Concrete...master thesis 2018
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Rivera Arreba, I. (author), Bruinsma, N. (author), Bachynski, E. E. (author), Viré, A.C. (author), Paulsen, B. T. (author), Jacobsen, N. G. (author)Floating offshore wind platforms may be subjected to severe sea states, which include both steep and long waves. The hydrodynamic models used in the offshore industry are typically based on potential-flow theory, and/or Morison's equation. These methods are computationally efficient, and can be applied in global dynamic analysis considering...conference paper 2018
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Janssen, H.J. (author), Eichelsheim, Veroni I. (author), Deković, Maja (author), Bruinsma, Gerben J.N. (author)In the current study, we examined longitudinally whether boys and girls differed in pathways from parenting to delinquency. Longitudinal mediational models were tested for boys and girls separately in which three parenting dimensions (i.e., monitoring, limit setting, and the quality of the parent-adolescent relationship) were hypothesized to...journal article 2017
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Bruinsma, Quinten (author), Hill, Kevin (author), Hamburger, Rens (author)For both security and analytics, much research has gone into person tracking already. As a result, many<br/>different state of the art technologies exist. However, in darkness or without a direct line of sight, much<br/>less technologies are capable of this. The choices become especially limited when the setup needs to<br/>be portable.<br/>A...bachelor thesis 2017
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Bruinsma, Y. (author)Many falls occur in speed skating, most of which end up in protective padding that is placed along the ice rink. In this research project a testing method was established that can be used to test the influence of different padding parameters on the performance of the padding in relation to the skaters’ injury risks. An existing numerical model...master thesis 2017
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Bruinsma, M.C. (author)The Master’s programme Industrial Ecology is jointly organised by Leiden University and Delft University of Technology.master thesis 2016
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Gasperini, F. (author), Forbes, J. M. (author), Doornbos, E.N. (author), Bruinsma, S. L. (author)Meridional winds in the thermosphere are key to understanding latitudinal coupling and thermosphere-ionosphere coupling, and yet global measurements of this wind component are scarce. In this work, neutral and electron densities measured by the Challenging Minisatellite Payload (CHAMP) satellite at solar low and geomagnetically quiet...journal article 2016
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Bruinsma, N. (author)The present thesis considers numerical computations of fully nonlinear fluid-structure interaction. The aim of the thesis is to establish a well validated fully nonlinear numerical wave tank for the simulations of complex fluid-structure interaction of moored floating offshore structures. The numerical computations are carried out using the...master thesis 2016
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Bruinsma, N.J. (author)I gave myself the challenge to design a keyboard layout that could possibly break the keyboard lock-in. By using the design strategy of applying innovation adoption theory, neurodesign and my personal experience of being a dyslexic I was able to design a: visually grouped, symbolic, dyslexic and low-literate friendly keyboard layout innovation....master thesis 2015
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Bruinsma, V.M. (author)In many industries innovation is essential for companies to remain competitive in the market place. However, due to the embedded nature of technology, the commercialization of radically new high-take products is a complicated task to manage. Due to the presence of barriers to direct large-scale diffusion within the incumbent market situation,...master thesis 2015
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Gasperini, F. (author), Forbes, J.M. (author), Doornbos, E.N. (author), Bruinsma, S.L. (author)Vertical coupling between the lower and middle thermosphere due to the eastward propagating diurnal tide with zonal wave number 3 (DE3) and the 3.5?day ultra-fast Kelvin Wave (UFKW) is investigated using Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics-Sounding of the Atmosphere using Broadband Emission Radiometry (TIMED-SABER)...journal article 2015