arXiv subjects
Publications and source records attributed to Stylianos A. Kazazis.
We demonstrate a centrally controlled dynamic switched-QKD network, with integrated PUF-based dynamic authentication for each QKD link. The performance of the dynamic switched-QKD network with real-time PUF-based authentication is analyzed.
The rapid digitalisation of SMEs, further expedited as a business continuity measure against Covid19 impact, has brought along major cybersecurity challenges, as it creates a fertile landscape for malicious actors, that want to capitalise on the insufficient cybersecurity planning and preparedness of SMEs to conduct low-effort, lucrative attacks. This paper constitutes a case study on the cybersecurity challenges, specificities and the safeguarding of the ATracker, a real-life data collection and analytics engine developed by the SME Suite5. The ATracker has been successfully protected against attacks in conjunction with the PUZZLE Framework, a holistic policy-based cybersecurity solution, addressing major cybersecurity pillars and leveraging on the latest scientific advancements in cybersecurity research.
The photovoltaic properties of (0001) n-InGaN/p-GaN single heterojunctions were investigated numerically and compared with those of conventional p-GaN/i-InGaN/n-GaN structures, employing realistic material parameters. This alternative device architecture exploits the large polarization fields, and high efficiency modules are achieved for In-rich, partially relaxed and coherently strained InGaN films. Conversion efficiencies up to 14% under AM1.5G illumination can be reached, revealing the true potential of InGaN single junction solar cells with proper design.