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Fingerprint recognition has become a popular authentication method in modern smartphones, replacing traditional passwords and PINs. However, smartphone fingerprint sensors are small and capture only partial fingerprints with limited resolution. Combined with varying image quality and inconsistent finger placement, multiple images must be stored per user to ensure reliable authentication. During ve

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

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

Universitetslektor Kontaktinformation E-post: olof [dot] hallonsten [at] fek [dot] lu [dot] seOrganisation Organisation Hämtställe: 10 WebbplatsOlof Hallonstens profil i Lunds universitets forskningsportalAndra roller Forskare Socioekonomiska teknikstudier (SoeTech) Docent Organisation Publikationer Visar av publikationer. Sorterade efter år och sen titel. Filtrera efter typ AllaAntologi (redaktör

https://www.ehl.lu.se/olof-hallonsten - 2026-07-22

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

The research takes a descriptive and exploratory approach in understanding how the risk experience of top athletes shapes sports entrepreneurs’ risk-handling strategies. In particular, the purpose of this study is to advance the theoretical knowledge of entrepreneurial risk-handling by studying risk-handling strategies developed and applied by sports entrepreneurs and putting them into a conceptua

In living organisms, respiration is a biological process degrading different carbon substrates, consuming O2, and releasing the carbon as CO2. Plants have several alternative enzymes that are involved in the respiratory processes, as compared to animals. These alternative respiratory enzymes allow electrons to be transferred to oxygen in the mitochondrial inner membrane, but bypassing ATP synthesi

https://www.webbpublicering.lu.se/guides-english/web-form - 2026-07-21

This article recognizes the importance of Christensen et al’s (2009) development in the field of business model innovation by focusing on value configurations and different types of innovation. As this paper indicates, there is much to be done in developing the field of value configurations in association with innovation. This paper expands the set of value configurations (Stabell and Fjeldstad, 1

The speed at which the number of battery electric vehicles is growing is fueling debates and research on the criticality of battery materials. But rapid growth also enables fast uptake of new cathode chemistries, and electric vehicle batteries show considerable flexibility and material substitutability. Historical scaling of production is more dynamic than recognized in scenarios of future mineral

A frequency synthesizer applied to a 10/100Base-T ethernet transceiver is described. It can work adaptively in either a 10Mbps or 100Mbps mode and convert freely from on mode to another. Cascode current sources and differential delay cells are adopted to guarantee good performance. The circuit meets the requirements of both transmitter on rising/falling time and receiver on CDR so that additional

Many birds move fast into dark nest cavities forcing the visual system to adapt to low light intensities. Their visual system takes between 15 and 60 min for complete dark adaptation, but little is known about the visual performance of birds during the first seconds in low light intensities. In a forced two-choice behavioural experiment we studied how well budgerigars can discriminate stimuli of d