Πλοήγηση ανά Θέμα "De Gruyter Open Ltd"
Αποτελέσματα 1-20 από 22
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Bounds for the spectral radius of nonnegative matrices and generalized Fibonacci matrices
(2022)In this article, we determine upper and lower bounds for the spectral radius of nonnegative matrices. Introducing the notion of average 4-row sum of a nonnegative matrix, we extend various existing formulas for spectral ... -
Coronaviruses and their relationship with multiple sclerosis: is the prevalence of multiple sclerosis going to increase after the Covid-19 pandemia?
(2022)The purpose of this review is to examine whether there is a possible (etiological/triggering) relationship between infection with various Coronaviruses, including Severe Acute Respiratory Syndrome-related Coronavirus-2 ... -
Covid-19 as a potential accelerator. A euro-centric perspective
(2020)In the words of the IMF, the economic consequences of the COVID-19 pandemic have generated “a crisis like no other”. Economic shocks often result in social and political quivers within states but also affect relations ... -
Defence Spending and Sovereign Debt in Greece: A Long-Term Historical Perspective
(2021)The paper sets out to examine the military spending-public debt nexus in the case of Greece. Unlike previous studies that exclusively focus their analyses in the post-WWII period, the empirical investigation conducted ... -
The dimension Dind of finite topological T0-spaces
(2022)A. V. Arhangelskii introduced the dimension Dind and properties of this dimension have been studied for various classes of topological spaces. In this paper, we study this dimension for finite T0-spaces. Especially, we ... -
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The Eurasian Dry Grassland Group (EDGG) in 2016-2017
(2018)This report summarizes the activities and achievements of the Eurasian Dry Grassland Group (EDGG) from mid-2016 through to the end of 2017. During this period, the 13th Eurasian Grassland Conference took place in Sighişoara, ... -
Factors associated with recurrent transient global amnesia: Systematic review and pathophysiological insights
(2021)The examination of the risk factors that affect the recurrence of transient global amnesia (TGA) may shed light on the pathophysiological substrate of the disease. A systematic review was performed to identify the factors ... -
Fast iterative solutions of Riccati and Lyapunov equations
(2022)In this article, new iterative algorithms for solving the discrete Riccati and Lyapunov equations are derived in the case where the transition matrix is diagonalizable with real eigenvalues. It is shown that the proposed ... -
A hybrid downscaling approach for the estimation of climate change effects on droughts using a geo-information tool. Case study: Thessaly, Central Greece
(2016)Multiple linear regression is used to downscale large-scale outputs from CGCM2 (second generation CGCM of Canadian centre for climate monitoring and analysis) and ECHAM5 (developed at the Max Planck Institute for Meteorology), ... -
Improving aeration for efficient oxygenation in sea bass sea cages. Blood, brain and gill histology
(2016)An air diffusion based system (Airx) was developed to control the dissolved oxygen levels in aquaculture sea cages. The system was introduced and then tested for 37 days in a sea bass sea cage (aerated cage). A second sea ... -
Indoleamine 2,3-dioxygenase controls purinergic receptor-mediated ischemia-reperfusion injury in renal tubular epithelial cells
(2022)Ischemia-reperfusion (I-R) injury is the most common cause of acute kidney injury (AKI). Experimental studies have shown that indoleamine 2,3-dioxygenase 1 (IDO) and the purinergic receptor P2X7 contribute to kidney I-R ... -
Joint modelling of flood peaks and volumes: A copula application for the Danube River
(2016)Flood frequency analysis is usually performed as a univariate analysis of flood peaks using a suitable theoretical probability distribution of the annual maximum flood peaks or peak over threshold values. However, other ... -
The long-term prognosis of Transient Global Amnesia: A systematic review
(2021)Transient Global Amnesia (TGA) constitutes an enigmatic amnestic condition. In view of the admittedly limited knowledge regarding the nature of TGA, we decided to systematically review existing evidence for the generally ... -
Microstructural and mechanical characterization of solidified austenitic stainless steels
(2017)Among the family of stainless steels, cast austenitic stainless steels (CASSs) are preferably used due to their high mechanical properties and corrosion resistance. These steels owe their properties to their microstructural ... -
On statistical convergence of sequences of closed sets in metric spaces
(2021)In this paper, we do further investigations on the statistical inner and outer limits of sequences of closed sets in metric spaces, which were introduced by Nuray, Rhoades, and Talo, Sever, Başar, and generalize the ... -
Pesticide soil microbial toxicity: Setting the scene for a new pesticide risk assessment for soil microorganisms (IUPAC Technical Report)
(2022)Pesticides constitute an integral part of modern agriculture. However, there are still concerns about their effects on non-target organisms. To address this the European Commission has imposed a stringent regulatory scheme ... -
Promyelocytic leukemia antigen expression: A histological marker for primary biliary cholangitis diagnosis?
(2021)Distinguishing primary biliary cholangitis (PBC) from other cholestatic diseases at the histological level could be assisted by new methods, such as immunohistochemical staining of specific antigens. We evaluated whether ... -
Repository of intra- and inter-run variations of quantitative autoantibody assays: A European multicenter study
(2022)Objectives: No reference data are available on repositories to measure precision of autoantibody assays. The scope of this study was to document inter- and intra-run variations of quantitative autoantibody assays based on ... -
Socialising the Landscape in the Early Neolithic of Thessaly, Greece
(2021)This article attempts to draw attention to the social choices of the earliest farming societies, evaluating new and old settlement data from the Early Neolithic of Thessaly in Greece. We examine the inhabitation of landscapes, ...