Searched for: subject%3A%22traces%22
(1 - 20 of 165)

Pages

document
Mortier, Lucas (author)
Re-refined Engine Oil Bottoms (REOB) are a waste product from the re-refining process of waste engine oil. There is a large incentive in the world to produce recycled engine oil and the production of REOB in this process is increasing. On the other hand refineries are going through transitions due to economic and regulatory reasons (i.e. IMO...
master thesis 2024
document
Kok, Wim (author)
Power analysis can be used to retrieve key information as secure systems leak data-dependent information over side channels. A proposed solution to break the correlation between side channel information and secret information was to replace a vulnerable part of the cryptography implementation with a neural network. This uses the inherent...
master thesis 2024
document
Klijnjan, Tim (author)
Extreme Ultraviolet lithography is a vital step in the production of cutting edge computer chips that drive emergent technologies like AI, VR and the internet of things [1]. Careful control of Ultraviolet light beams by EUV machine modules such as the Unicom, Uniformity correction module, enable extremely precise printing of nano-scale...
master thesis 2024
document
Coco Martin, C.M. (author), Hu, Weiya (author), Cavallo, D. (author)
This work aims to provide guidelines on the design of wideband flat lenses based on artificial dielectric layers (ADLs). Planar lenses based on metasurfaces are typically narrowband, due to the phase wrapping over the period of 2\pi that is strongly frequency-dependent. On the contrary, true-time-delay (TTD) planar lenses, which do not resort...
journal article 2024
document
Hu, Weiya (author), Coco Martin, C.M. (author), Cavallo, D. (author)
A semi-analytical method is presented for the design of gradient index (GRIN) flat lenses. Closed-form expressions are derived to define the refractive index distribution of the lens, for several cases: collimating lenses with on-axis feed, collimating lenses with off-axis feed, lenses converting spherical wavefronts with different...
journal article 2024
document
Tan, Zhuowen (author)
Understanding how the end users, ordinary citizens, experience designed public spaces is fundamental in the field of urban design. Virtual Reality (VR) technologies significantly enhance the ease of evaluating public space designs by creating virtual simulations. This allows users to immerse themselves more deeply in the space compared to...
master thesis 2023
document
Cimino, Giovanni (author)
The textile and fashion industry, with its complex supply chain from fiber production to retail, employs harmful chemicals, posing risks to the environment and workers. Fast fashion has intensified clothing production, leading to extensive textile waste. Consequently, it has fostered a more ephemeral and less emotionally durable connection with...
master thesis 2023
document
Wang, Xiangwen (author)
Increasing wireless communication requirements of data rates, capacity and coverage, and evolution and maturation of wireless equipment prompt wireless communication research insight concentrating on millimeter wave (mm-wave) frequency. However, high reflection coefficients and high path loss cause large shadow areas (e.g. behind the buildings)...
master thesis 2023
document
Azimullah, Joshua (author)
A novel approach for determining the optimal location of a sound source within an acoustic environment is proposed. This approach involves the application of Importance Sampling to improve the efficiency of the existing method of acoustic ray-tracing for finding the frequency response at various listening locations. The results of this study do...
bachelor thesis 2023
document
Condon, Artemy (author)
master thesis 2023
document
Agresti, Antonio (author), Lindemulder, N. (author), Veraar, M.C. (author)
In this paper, we consider traces at initial times for functions with mixed time-space smoothness. Such results are often needed in the theory of evolution equations. Our result extends and unifies many previous results. Our main improvement is that we can allow general interpolation couples. The abstract results are applied to regularity...
journal article 2023
document
Yunus, F. (author), Casalino, D. (author), Avallone, F. (author), Ragni, D. (author)
Efficient calculation of urban air mobility noise footprint in a vertiport environment, considering acoustic effects of various designs, operational conditions, and environmental factors, is essential to limit the noise impact on the community at an early stage. To this purpose, the computationally efficient low-fidelity approach presented by...
journal article 2023
document
de Koning, B. (author), Heemels, A.N.M. (author), Adam, A.J.L. (author), Möller, M. (author)
Algorithmic differentiable ray tracing is a new paradigm that allows one to solve the forward problem of how light propagates through an optical system while obtaining gradients of the simulation results with respect to parameters specifying the optical system. Specifically, the use of algorithmically differentiable non-sequential ray tracing...
journal article 2023
document
Siemons, M. E. (author), Hagenaar, M. (author), Adam, A.J.L. (author), Kohlhaas, R. (author)
Recently a spectrometer concept has been invented which uses compressive sensing in combination with photonic crystal filters. Here we present an adaption of this concept in push-broom configuration for earth observation. This implementation allows for a compact design, while maintaining a high spatial resolution and high signal-to-noise...
conference paper 2023
document
Gottmer, Leila (author)
In this thesis, an efficient optimization method is described for synthesizing lens antennas fabricated in low permittivity plastic materials to achieve wide scanning performances. The method is based on an antenna in reception representation. The optimized parameters are the location and orientation of the antenna feeder, lens angular region...
master thesis 2022
document
Guo, Jerry Jinfeng (author)
Realism has always been a major goal in visual content creation - from oil painting to motion pictures, from graphic arts to scientific data visualization. Computer graphics creates a virtual reality with digital representations. Trading between accuracy and speed, realistic rendering either creates photorealistic renders that follow strict...
doctoral thesis 2022
document
Westerman, Maaike (author)
To ensure proper development, infants must receive the right amount of nutrients. Since their intake of minerals and trace elements in the first four months comes solely from mother milk or formula, valuable information about the uptake can derived by analyzing their excretion (in the form of feces or urine). Previous studies have used this...
master thesis 2022
document
de Koning, Bart (author)
Differentiable ray-tracing is an exciting new development in computer graphics to approach all sorts of 3D scene design problems by obtaining gradients of renders produced by ray-tracing with respect to parameters that define the scene. These gradients can then be incorporated in a gradient-descent type optimization pipeline.<br/><br/>One such...
master thesis 2022
document
Hullegien, Nils (author)
Microservice architectures (MSA) have become a dominant architectural style choice in the service oriented software industry. Because of this, as with any other system, some unoptimized approaches might creep into architectures. These are what we call anti-patterns, they can be considered the opposite of design patterns. Furthermore, a...
master thesis 2022
document
van Leeuwen, Ella (author)
The Atmoscope is the idea to use the atmosphere of a planet as a telescopic lens. It uses the refractive properties of an atmosphere to converge light rays to a focal line. It has been hypothesized that using Earth’s atmosphere could, under favorable circumstances, yield an amplification of 55; 000 for a detector that has a surface area of 1m2....
bachelor thesis 2022
Searched for: subject%3A%22traces%22
(1 - 20 of 165)

Pages