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We consider the problem of computing the product of two n×n Boolean matrices A and B. For an n×n Boolean matrix C, let GC be the complete weighted graph on the rows of C where the weight of an edge between two rows is equal to its Hamming distance, i.e., the number of entries in the first row having values different from the corresponding entries in the second one. Next, letMWT(C) be the weight of a
The Fourier slice theorem for the standard Radon transform generalizes to a Laplace counterpart when considering the exponential Radon transform. We show how to use this fact in combination with algorithms for the unequally spaced fast Laplace transform to construct fast and accurate methods for computing both the forward exponential Radon transform and the corresponding back-projection operator.
This paper presents a novel polynomial constraint for homographies compatible with the general planar motion model. In this setting, compatible homographies have five degrees of freedom-instead of the general case of eight degrees of freedom-and, as a consequence, a minimal solver requires 2.5 point correspondences. The existing minimal solver, however, is computationally expensive, and we propose
Cooperation of transceivers on signal level at the remote terminal—often referred to as vectoring—is an effective approach to mitigate crosstalk in wireline transmission systems. While the gain in bitrate compared to crosstalk-limited transmis- sion is substantial, the initialization of a vectoring system requires time and care to ensure system stability. In this contribution, a fast initializatio
The thesis deals with circuit-level aspects of CMOS buffer SRAMs where the data throughput rate is a more important metric than access time or storage capacity. One aspect is the increased write cycle related power consumption that is the consequence of a high write ratio combined with a long word-length. That is addressed through the invention of a new bit-line operation mode which allows lower
Microstructural information over an entire sample is important to understand the macroscopic behaviour of materials. X-ray scattering tensor tomography facilitates the investigation of the microstructural organisation in statistically large sample volumes. However, established acquisition protocols based on scanning small-angle X-ray scattering and X-ray grating interferometry inherently require l
Increasingly fine-grained cloud billing creates incentives to review the software execution footprint in virtual environments. For example, virtual execution environments move towards lower overhead: from virtual machines to containers, unikernels, and serverless cloud computing. However, the execution footprint of security components in virtualized environments has either remained the same or eve
We use randomness to exploit the potential sparsity of the Boolean matrix product in order to speed up the computation of the product. Our new fast outputsensitive algorithm for Boolean matrix product and its witnesses is randomized and provides the Boolean product and its witnesses almost certainly. Its worst-case time performance is expressed in terms of the input size and the number of non-zero
In order to move away from fossil fuels many governments and industries are focusing their new investments in electricity and alternative fuels such as green hydrogen from electrolyzers using renewable electricity. High investment costs and electricity costs are a hindrance for the future development of a hydrogen economy which can utilize an increasing intermittent power generation. The aim of th
Schedule UTVC26, fall 2017, updated 2017-10-16 Date and Place Title Time Teacher Reading 1/11 Världen Introduction 09-10 EG 1/11 Världen Philosophy of science and the qualitative-quantitative divide – real or fiction? 10-12 EG Bryman ch 1-2, de Vaus ch 1 3/11 Världen Design in qualitative research 13-15 JG Bryman ch 1, 3, 7, 17, de Vaus chapter 7, Lijphart 6/11 Världen Design in quantitative resea
https://www.keg.lu.se/sites/keg.lu.se/files/utvc26_ht_2017_schedule_2017-10-16.pdf - 2026-06-23
Uppsatsen har undersökt huruvida spelföretaget Star Stable Entertainment AB marknadsföring av virtuella valutor och produkter till barn bryter mot EU:s konsumentskyddslagstiftning i ljuset av Sveriges Konsumenters anmälan mot företaget. Uppsatsen har även diskuterat om direktivet om otillbörliga affärs-metoder är anpassat för den digitala miljön med hänsyn till kommissionens aktuella fitness checkThe essay analyses whether the gaming company Star Stable Entertainment AB´s marketing of virtual currencies and other virtual products against chil-dren violates EU consumer law, considering the Swedish Consumers Associ-ation’s complaint against the company. The paper also discusses whether the Unfair Commercial Practice Directive (UCPD) is fit for the digital environ-ment, given the European Com
Background and Purpose-We have previously shown that delivery of brain-derived neurotrophic factor (BDNF) through direct intrahippocampal gene transduction with a viral vector suppresses the formation of new dentate granule cells triggered by global forebrain ischemia. Here, we investigated whether inhibition of endogenous BDNF alters ischemia-induced neurogenesis in the dentate gyrus. Methods-Rat
Supramolecular hydrogels have attracted increasing attention in drug delivery, tissue engineering, and injectable biomaterials because of their high water content, good biocompatibility, and dynamic network structures. Cyclodextrin-based supramolecular systems can form network structures through host–guest interactions. These systems usually require mild cross-linking conditions and allow flexible
Protein therapeutics need to be formulated into an amorphous solid state to be stabilized, and this is efficiently done by spray drying together with a sugar matrix excipient. The characteristics of the produced powder are strongly dependent on process parameters, and therefore, spray drying offers the possibility of advanced particle engineering. In this thesis, trypsin was spray dried as a model
Sponge phase nanoparticles are lipid-based particles with a porous structure, forming pores with sizes up to 13 nm in diameter. These particles have been proposed for drug delivery by loading cargo within the pores, similar to how ionisable nanoparticles are used today. The larger pores could allow for larger cargo to be delivered to cells. Sponge phase nanoparticles, 277 ± 29 nm in diameter, were
Nanoparticle-based targeted drug delivery holds promise for treatment of cancers. However, most approaches fail to be translated into clinical success due to ineffective tumor targeting in vivo. Here, the delivery potential of mesoporous silica nanoparticles (MSN) functionalized with targeting ligands for epidermal growth factor receptor and C─C chemokine receptor type 2 is explored in lung tumors
