- document
-
Naeije, M.C. (author), Di Bella, Alessandro (author), Geminale, Teresa (author), Visser, P.N.A.M. (author)ESA’s Earth explorer mission CryoSat-2 has an ice-monitoring objective, but it has proven to also be a valuable source of observations for measuring impacts of climate change over oceans. In this paper, we report on our long-term ocean data analysis and validation and give our final words on CryoSat-2’s Geophysical Ocean Products (GOP)...journal article 2023
- document
-
Van Rheenen, E.S. (author), Scheffers, E.L. (author), Zwaginga, J.J. (author), Visser, K. (author)It is essential to use alternative fuels if we are to reach the emission reduction targets set by the IMO. Hydrogen carriers are classified as zero-emission, while having a higher energy density (including packing factor) than pure hydrogen. They are often considered as safe alternative fuels. The exact definition of what safety entails is often...journal article 2023
- document
-
Van Rheenen, E.S. (author), Padding, J.T. (author), Slootweg, J. C. (author), Visser, K. (author)Green hydrogen combined with PEM fuel cell systems is a viable option to meet the demand for alternative maritime fuels. However, hydrogen storage faces challenges, including low volumetric density, fire and explosion risks and transport challenges. We assessed over fifteen hydrogen carriers based on their maritime performance characteristics...journal article 2023
- document
-
Visser, Vivian (author), van Popering-Verkerk, Jitske (author), Minkman, E. (author), van Buuren, Arwin (author)In their quest to create vital cities, West European city governments stimulate citizens to self-organize in citizens' initiatives. This trend it accompanied by conflicting scientific and governmental discourses: on the one hand, citizens' initiatives are praised for giving ‘power to the people’, on the other hand, citizens' initiatives are...journal article 2023
- document
-
Li, Z. (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Visser, Peter (author), Soleimani, M. (author), Mol, J.M.C. (author)The influence of ageing under ambient conditions on the corrosion protective behaviour of a lithium-based conversion layer on AA2024-T3 is studied in this work. Conversion layers aged at ambient conditions for relatively short times (0 h and 4 h), show an initial high degree of corrosion inhibition but a much lower protectiveness after the...journal article 2023
- document
-
de Koning, J.I.J.C. (author), van Dam, S.S. (author), Boele, Charlotte (author), Buskens, Vincent (author), Chan, Josephine (author), Onencan, Abby (author), Ou, Jiamin (author), Van de Rijt, Arnout (author), Shah, Jesal (author), Schneider, Philip (author), Visser, Rose (author)Having directly observed one of the most rapidly spreading global pandemics, we understand more than ever the power of contagion. In today’s interconnected world, trends originating in one corner, whether it’s a disease, clothing fashion, or an online social media challenge, can swiftly gain momentum on the opposite side of the globe, often...book 2023
- document
-
Gurvits, L. (author), Cimò, Giuseppe (author), Dirkx, D. (author), Pallichadath, V. (author), Altobelli, Nicolas (author), Bocanegra Bahamon, T.M. (author), Cazaux, S.M. (author), Vermeersen, L.L.A. (author), Visser, P.N.A.M. (author)Planetary Radio Interferometry and Doppler Experiment (PRIDE) is a multi-purpose experimental technique aimed at enhancing the science return of planetary missions. The technique exploits the science payload and spacecraft service systems without requiring a dedicated onboard instrumentation or imposing on the existing instrumentation any...review 2023
- document
-
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
- document
-
Denkers, J. (author), Brunner, Marvin (author), van Gool, Louis (author), Vinju, Jurgen J. (author), Zaidman, A.E. (author), Visser, Eelco (author)Flexible printing systems are highly complex systems that consist of printers, that print individual sheets of paper, and finishing equipment, that processes sheets after printing, for example, assembling a book. Integrating finishing equipment with printers involves the development of control software that configures the devices, taking...journal article 2023
- document
-
van Veldhuizen, B.N. (author), Zera, E. (author), van Biert, L. (author), Modena, S. (author), Visser, K. (author), Aravind, P.V. (author)Solid Oxide Fuel Cell (SOFC) systems have the potential to reduce emissions from seagoing vessels. However, it is unknown whether ship motions influence the system's operation. In this research, a 1.5 kW SOFC module is operated on an inclination platform that emulates ship motions, to evaluate the influence of static and dynamic inclinations...journal article 2023
- document
-
Jiang, M. (author), Baart, F. (author), Visser, K. (author), Hekkenberg, R.G. (author), van Koningsveld, M. (author)The availability of supporting bunker infrastructure for zero-emission energy sources will be key to accommodate zero-emission inland waterway transport (IWT). However, it remains unclear which (mix of) zero-emission energy sources to prepare for, and how to plan the bunker infrastructure in relative positions and required capacity at corridor...conference paper 2023
- document
-
Broekens, K.A. (author), Klop, Wimar (author), Moens, Thijs (author), Eschen, M. (author), Castro do Amaral, G. (author), Silverstri, Fabrizio (author), Visser, Martijn (author), Kaffa, Lauren (author), Saathof, R. (author)For the next generation of very high throughput communication satellites, free-space optical (FSO) communication between ground stations and geostationary telecommunication satellites is a potential solution to overcome the limitations of RF links. To mitigate atmospheric turbulence effects, TNO proposes Adaptive Optics (AO) to apply uplink...conference paper 2023
- document
-
Li, Z. (author), Li, G. (author), Visser, Peter (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author)Scanning electrochemical microscopy (SECM) is employed to characterize the evolution of local electrochemical surface activity during lithium-based conversion layer formation on legacy aerospace aluminium alloy AA2024-T3. Initially, three types of studied intermetallic particles - S-, θ- and constituent phases - act as active cathodic areas....journal article 2023
- document
-
van Veldhuizen, B.N. (author), van Biert, L. (author), Amladi, A. (author), Woudstra, T. (author), Visser, K. (author), Aravind, P.V. (author)An increasing demand in the marine industry to reduce emissions led to investigations into more efficient power conversion using fuels with sustainable production pathways. Solid Oxide Fuel Cells (SOFCs) are under consideration for long-range shipping, because of its high efficiency, low pollutant emissions, and fuel flexibility. SOFC systems...journal article 2023
- document
-
Casini, S. (author), Cervone, A. (author), Monna, G.L.E. (author), Visser, P.N.A.M. (author)This paper aims to investigate the capabilities of exploiting optical line-of-sight navigation using star trackers. First, a synthetic image simulator is developed to generate realistic images, which is later exploited to test the star tracker's performance. Then, generic considerations regarding attitude estimation are drawn, highlighting...journal article 2023
- document
-
Visser, P.M. (author)Context. In a Keplerian system, a large number of bodies orbit a central mass. Accretion disks, protoplanetary disks, asteroid belts, and planetary rings are examples. Simulations of these systems require algorithms that are computationally efficient. The inclusion of collisions in the simulations is challenging but important. Aims. We intend...journal article 2023
- document
-
Casini, S. (author), Turan, E. (author), Cervone, A. (author), Monna, Bert (author), Visser, P.N.A.M. (author)This manuscript aims to present and evaluate the applicability of combining optical line-of-sight (LoS) navigation with crosslink radiometric navigation for deep-space cruising distributed space systems. To do so, a set of four distributed space systems architectures is presented, and for each of those, the applicability of the combination is...journal article 2023
- document
-
Sarris, Theodore E. (author), Tourgaidis, Stelios (author), Pirnaris, Panagiotis (author), Baloukidis, Dimitris (author), Papadakis, Konstantinos (author), Doornbos, Eelco (author), Siemes, C. (author), Visser, P.N.A.M. (author), van den IJssel, J.A.A. (author)Daedalus MASE (Mission Assessment through Simulation Exercise) is an open-source package of scientific analysis tools aimed at research in the Lower Thermosphere-Ionosphere (LTI). It was created with the purpose to assess the performance and demonstrate closure of the mission objectives of Daedalus, a mission concept targeting to perform in...journal article 2023
- document
-
Therias, Adele (author), Theodoridou, Eleni (author), PAPADIMITRIOU, CHRYSANTHI (author), Visser, Fabian (author), Zhang, Fengyan (author), Panagiotidou, Ioanna (author)Currently more than 4 billion people live in urban areas around the globe, a trend that is expected to be increased in the upcoming years. While urbanisation provides the space for innovation and new opportunities, in the meantime physical, technical and social challenges are rising and the cities’ vulnerability is increasing. A tool to tackle...student report 2022
- document
-
Visser, Rose (author)95 % of all the buildings in the Netherlands rely on natural gas for heat. But in just 30 years, all of these 7 million homes must have said goodbye to gas forever. A complex project, since the alternative to gas, is not a one size fits all solution. There are several options and their feasibility is highly dependent on the neighborhood context....master thesis 2022