Development of Energy Efficiency Aware Applications Using Commercial Low Power Embedded Systems

Embedded system

DICHOTOMY IN THE DISTRIBUTION OF MARITIME ACTIVITY BETWEEN MARINE SUB-REGIONS OF EUROPE

Coastal settlements tend to have higher population density and economic clustering compared to inland territories. The tendency of an increasing socio-economic disbalance in favor of coastal spaces – the coastalization, has attracted the attention of the global academic community. Numerous assumptions are made on the cause of the coastalization phenomenon with the maritime activity and tourism being the primary ones. The aim of this study is to evaluate the role of the coast and tourist seaport infrastructure in the distribution of the population and tourist accommodations in cities across different sea basins of Europe. The research design implies verification of the two hypotheses: the area around the tourist seaport will ha ve H1. The highest population density and H2. The highest density of collective accommodation facilities (CAFs) in the coastal zone of the municipality, decreasing with distance. The methodology has a two-stage structure. Firstly, the quantitative evaluation is done to allocate the tourist seaports of 28 European countries using MarineTraffic database and measure the density of population and CAFs by territorial zones using statistics. Secondly, the qualitative assessment is done presenting highlights of case studies by four sea basins (Baltic Sea, Black and Azov Sea, Northeast Atlantic Ocean, Celtic Sea, and Mediterranean Sea) and six sub-basins. 43 seaports of Europe specialize on tourism (over 90% of inbound ships). Most tourist seaports belong to the Mediterranean basin (58.1%), followed by the basin of the Northeast Atlantic Ocean (25.6%), the Azov-Black (11.6%) and Baltic (4.7%) sea basins. Cities with the tourist seaports are represented by a variety population sizes: from under 50 thousand people to over a million. Despite the differences across sea basins, the general pattern suggests a decline of population density and CAFs with the distance from the tourist seaport. Tourist seaports act as the nuclei of coastalization in Europe. The spatial proximity to the seaport has a positive influence on the density of population – the highest in the territorial zone of 2-5 km distance from the seaport, and an even higher effect on the concentration of CAFs – the highest numbers up to 1 km of the tourist seaport. We should note that population structure and tourism activity of some smaller cities are skewed towards larger adjacent cities, with the agglomeration effect outbreaking the role of the seaport

Analysis of the "Dandruff attack" on the Tron Network: risks, damage assessment, and solutions

This study, conducted by employees of Match Systems in November-December 2022, presents a subjective opinion on the potential involvement of certain addresses and transactions in suspicious activity. This research was initiated in response to reports from Match Systems' clients, that identified a new pattern of network attacks distinct from the well-known "Dust Attacks." The study relies solely on publicly available data and does not incorporate any additional information. The assessment and conclusions drawn are based on observed patterns of suspicious activity and have not been corroborated by court decisions or law enforcement agencies. The findings of this study do reveal the existence of a new threat, that has had detrimental effects on numerous users who have experienced frustration and financial losses. The study also offers recommendations for users to safeguard themselves and their funds. It is important to note that because of the subjective nature of this study, it should be taken into consideration alongside other sources of information. Careful analysis is necessary before implementing any actions based on its findings. Furthermore, given the constantly evolving landscape of cyber threats, individuals and organizations must remain vigilant and stay informed about the latest threats and best practices for protecting their asset

Ion implantation in β-Ga2O3 : Physics and technology

Gallium oxide, and in particular its thermodynamically stable β-Ga2O3 phase, is within the most exciting materials in research and technology nowadays due to its unique properties. The very high breakdown electric field and the figure of merit rivaled only by diamond have tremendous potential for the next generation “green” electronics enabling efficient distribution, use, and conversion of electrical energy. Ion implantation is a traditional technological method used in these fields, and its well-known advantages can contribute greatly to the rapid development of physics and technology of Ga2O3-based materials and devices. Here, the status of ion implantation in β-Ga2O3 nowadays is reviewed. Attention is mainly paid to the results of experimental study of damage under ion irradiation and the properties of Ga2O3 layers doped by ion implantation. The results of ab initio theoretical calculations of the impurities and defect parameters are briefly presented, and the physical principles of a number of analytical methods used to study implanted gallium oxide layers are highlighted. The use of ion implantation in the development of Ga2O3-based devices, such as metal oxide field-effect transistors, Schottky barrier diodes, and solar-blind UV detectors, is described together with systematical analysis of the achieved values of their characteristics. Finally, the most important challenges to be overcome in this field of science and technology are discussed

Catheter ablation or medical therapy to delay progression of atrial fibrillation : The randomized controlled atrial fibrillation progression trial (ATTEST)

Funding Information: This work was supported by Biosense Webster, Inc. Publisher Copyright: © 2020 The Author(s) 2020. Published by Oxford University Press on behalf of the European Society of Cardiology.Aims: Delay of progression from paroxysmal to persistent atrial fibrillation (AF) is an important measure of long-term success of AF treatment. However, published data on the impact of catheter ablation on AF progression are limited. This study evaluates whether radiofrequency (RF) catheter ablation delays the progression of AF compared with antiarrhythmic drug (AAD) treatment using current AF management guidelines. Methods: This prospective, randomized, controlled, two-arm, open-label trial was conducted at 29 hospitals and medical centres across 13 countries. Patients were randomized 1: 1 to RF ablation or AAD treatment. The primary endpoint was the rate of persistent AF/atrial tachycardia (AT) at 3 years. Results: After early study termination following slow enrolment, 255 (79%) of the planned 322 patients were enrolled (RF ablation, n = 128, AAD, n = 127); 36% of patients in the RF ablation group and 41% in the AAD group completed 3 years of follow-up. For the primary endpoint, the Kaplan-Meier estimate of the rate of persistent AF/AT at 3 years was significantly lower with RF ablation [2.4% (95% confidence interval (CI), 0.6-9.4%)] than with AAD therapy [17.5% (95% CI, 10.7-27.9%); one-sided P = 0.0009]. Patients ≥65 years were ∼4 times more likely to progress to persistent AF/AT than patients <65 years, suggesting RF ablation can delay disease progression [hazard ratio: 3.87 (95% CI, 0.88-17.00); P = 0.0727]. Primary adverse events were reported for eight patients in the RF ablation group. Conclusions: Radiofrequency ablation is superior to guideline-directed AAD therapy in delaying the progression from paroxysmal to persistent AF.publishersversionPeer reviewe

Azimuthal anisotropy of charged jet production in root s(NN)=2.76 TeV Pb-Pb collisions

We present measurements of the azimuthal dependence of charged jet production in central and semi-central root s(NN) = 2.76 TeV Pb-Pb collisions with respect to the second harmonic event plane, quantified as nu(ch)(2) (jet). Jet finding is performed employing the anti-k(T) algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero nu(ch)(2) (jet) is observed in semi-central collisions (30-50% centrality) for 20 <p(T)(ch) (jet) <90 GeV/c. The azimuthal dependence of the charged jet production is similar to the dependence observed for jets comprising both charged and neutral fragments, and compatible with measurements of the nu(2) of single charged particles at high p(T). Good agreement between the data and predictions from JEWEL, an event generator simulating parton shower evolution in the presence of a dense QCD medium, is found in semi-central collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe

Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe