«Κατάθλιψη, Άγχος και Θυμός σε φοιτητικό πληθυσμό»

Στόχος της παρούσας έρευνας είναι η διερεύνηση των επιπέδων Κατάθλιψης, Άγχους και Θυμού στο φοιτητικό πληθυσμό και πιθανή συσχέτιση μεταξύ τους και με τα δημογραφικά χαρακτηριστικά του δείγματος. Οι συμμετέχοντες της έρευνας ήταν 350 φοιτητές, 175 άντρες και 175 γυναίκες που φοιτούν σε δύο Ανώτατα Εκπαιδευτικά Ιδρύματα και ένα Ανώτατο Τεχνολογικό Εκπαιδευτικό Ίδρυμα της Αθήνας. Τα εργαλεία αξιολόγησης ήταν ένα αυτοσχέδιο ερωτηματολόγιο δημογραφικών στοιχείων, η κλίμακα κατάθλιψης του Α. Τ. Beck (Beck Depression Inventory [BDI]), η κλίμακα για την έκφραση του Θυμού (State-Trait Anger Expression Inventory [STAXI]) και το ερωτηματολόγιο Άγχους του Beck (Beck Anxiety Inventory - BAI). Βρέθηκε ότι υπήρχε θετική σχέση ανάμεσα σε Κατάθλιψη και Άγχος, θετική σχέση ανάμεσα σε Κατάθλιψη και Εσωτερικευμένο Θυμό, αρνητική σχέση μεταξύ Κατάθλιψης, Εξωτερικευμένου Θυμού και Ελέγχου του Θυμού, οι γυναίκες παρουσίασαν υψηλότερα ποσοστά Κατάθλιψης και Άγχους από τους άντρες και οι πρωτοετείς φοιτητές παρουσίασαν υψηλότερα επίπεδα Κατάθλιψης. Λέξεις- κλειδιά: κατάθλιψη, άγχος, θυμός, φοιτητικός πληθυσμόςThe aim of the present study is to examine the levels of Depression, Anxiety and Anger in Greek University students, possible intercorrelations and the demographic characteristics of the sample. The participants of the study were 350 university students, 175 men and 175 women from two Higher Education Institutions and one Higher Technological Educational Institute of Athens. The psychometric instruments used were a self-report demographic questionnaire, the Beck Depression Inventory [BDI], the State-Trait Anger Expression Inventory [STAXI] and the Anxiety Questionnaire of Beck (Beck Anxiety Inventory - BAI). The study found that there was a positive correlation between Depression and Anxiety, a positive correlation between Depression and Internal Anger, a negative correlation between Depression, External Anger and Anger Control, while women showed higher rates of Depression and Anxiety than men. Furthermore, first year students showed higher levels of Depression. Keywords: depression, anxiety, anger, University student

Enhanced Strongly typed Genetic Programming for Algorithmic Trading

This paper proposes a novel strongly typed Genetic Programming (STGP) algorithm that combines Technical (TA) and Sentiment anal- ysis (SA) indicators to produce trading strategies. While TA and SA have been successful when used individually, their combination has not been considered extensively. Our proposed STGP algorithm has a novel fitness function, which rewards not only a tree’s trading performance, but also the trading performance of its TA and SA subtrees. To achieve this, the fitness function is equal to the sum of three components: the fitness function for the complete tree, the fitness function of the TA subtree, and the fitness function of the SA subtree. In doing so, we ensure that the evolved trees contain profitable trading strategies that take full advantage of both techni- cal and sentiment analysis. We run experiments on 35 international stocks and compare the STGP’s performance to four other GP algo- rithms, as well as multilayer perceptron, support vector machines, and buy and hold. Results show that the proposed GP algorithm statistically and significantly outperforms all benchmarks and it im- proves the financial performance of the trading strategies produced by other GP algorithms by up to a factor of two for the median rate of return

Understanding the nature of atmospheric acid processing of mineral dusts in supplying bioavailable phosphorus to the oceans

Acidification of airborne dust particles can dramatically increase the amount of bioavailable phosphorus (P) deposited on the surface ocean. Experiments were conducted to simulate atmospheric processes and determine the dissolution behaviour of phosphorus compounds in dust and dust precursors oils. Acid dissolution occurs rapidly (seconds to minutes) and is controlled by the amount of H + ions present. For H + 10-4 mol per gram of dust, the amount of phosphorus (and Ca) released follows a power law dependent on the amount of H + consumed until all inorganic phosphorus minerals are exhausted and the final pH remains acidic. Once dissolved, phosphorus will stay in solution due to slow precipitation kinetics. Dissolution of apatite-P, the major mineral phase in dust (79-96%), occurs whether CaCO 3 is present or not, though the increase in dissolved phosphorus is greater if CaCO 3 is absent or if the particles are externally mixed. The system was modelled adequately as a simple mixture of apatite-P and calcite. Phosphorus dissolves readily by acid processes in the atmosphere in contrast to iron, which dissolves slower and is subject to re-precipitation at cloud water pH. We show that acidification can increase bioavailable phosphorus deposition over large areas of the globe, and may explain much of the previously observed patterns of variability in leachable phosphorus in oceanic areas where primary productivity is limited by this nutrient (e.g. Mediterranean)

Fostering cybersecurity in Europe through regulation

This paper discusses the first results of one of the four EU H2020 pilot projects launched to prepare the European Cybersecurity Competence Network. As demonstrated by the recent agreement between the European Parliament, the Council and the European Commission on the Cybersecurity Act, reinforcing cybersecurity is a primary goal for Europe. Nevertheless, from a legal standpoint, this result is not achieved through a general regulation. In Europe, several acts contribute in defining the cybersecurity legal framework. Against this background, this paper identifies the various provisions which, in different EU regulations and directives, contribute to create this framework. This analysis makes it possible to define the common security and data protection building blocks which characterize the EU regulatory patchwork. In this light, two of the main outcomes of this paper are (1) an overview of the potential overlaps concerning the existing legal obligations in the field of cybersecurity –e.g. notifications, certifications– and (2) the first outline of a general, comprehensive and cross-cutting map of legal obligations and procedures concerning cybersecurity. Although a clear map of these legal obligations is ever more important for the business community and public sector operators, the main goal of the authors is not limited to the analysis of the legal framework. The paper also focuses on the existing correlation between the legal framework and technology development in cybersecurity

Οι τελευταίες επιστολές του Σαντόρε ντι Σανταρόζα από το έργο Memorie e lettere inedite του Nicomede Bianchi. Μια απόπειρα συλλογικής σχολιασμένης μετάφρασης και τεκμηρίωσης

Με αφορμή τα διακόσια χρόνια από την έναρξη της Επανάστασης του 1821 δημιουργήθηκε μια ομάδα συλλογικής μετάφρασης στο πλαίσιο του μαθήματος «Μετάφραση Γενικών Κειμένων από Ιταλικά στα Ελληνικά» του Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών «Μετάφραση και Διερμηνεία» του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης και διδάσκοντες την Καθηγήτρια Ιστορίας και Μετάφρασης Ιταλικής Λογοτεχνίας Ζώζη Ζωγραφίδου και τον Δρ. Μεταφρασεολογίας Ηλία Σπυριδωνίδη, με στόχο τη μελέτη, τη σχολιασμένη μετάφραση και την τεκμηρίωση ενός αμετάφραστου ιταλικού κειμένου σχετικά με την Επανάσταση. Για το σκοπό αυτό, παρουσιάζονται στο πλαίσιο της παρούσας εργασίας, ως μια απόπειρα συλλογικής σχολιασμένης μετάφρασης και τεκμηρίωσης, μερικά αποσπάσματα από αμετάφραστες επιστολές του Ιταλού φιλέλληνα Σαντόρε ντι Σανταρόζα συνοδευόμενες από σχόλια του Nicomede Bianchi που περιλαμβάνονται στο έργο του Memorie e lettere inedite. On the occasion of the two hundredth anniversary of the Revolution of 1821, a collective translation group was created in the frame of the course "Translation of General Texts from Italian to Greek" of the Joint Postgraduate Studies Programme (J.P.P.S.) «Conference Interpreting and Translation» of Aristotle University of Thessaloniki taught by Professor of History and Translation of Italian Literature Zozi Zografidou and Dr. of Translation Studies Ilias Spyridonidis with the aim to study, to annotate and document a translation of an Italian text related to the Greek Revolution which has not been translated before into Greek. For this purpose, some fragments of untranslated letters of the Italian philhellene Santorre di Santarosa accompanied by Nicomede’s Bianchi comments included in the work Memorie e lettere inedite are presented in the context of this study, as an attempt of a collective annotated translation and documentation

Saharan Dust Deposition Effects on the Microbial Food Web in the Eastern Mediterranean: A Study Based on a Mesocosm Experiment

The effect of episodicity of Saharan dust deposition on the pelagic microbial food web was studied in the oligotrophic Eastern Mediterranean by means of a mesocosm experiment in May 2014. Two different treatments in triplicates (addition of natural Saharan dust in a single-strong pulse or in three smaller consecutive doses of the same total quantity), and three unamended controls were employed; chemical and biological parameters were measured during a 10-day experiment. Temporal changes in primary (PP) and bacterial (BP) production, chlorophyll a (Chl a) concentration and heterotrophic bacteria, Synechococcus and mesozooplankton abundance were studied. The results suggested that the auto- and hetero-trophic components of the food web (at least the prokaryotes) were enhanced by the dust addition (and by the nitrogen and phosphorus added through dust). Furthermore, a 1-day delay was observed for PP, BP, and Chl a increases when dust was added in three daily doses; however, the maximal values attained were similar in the two treatments. Although, the effect was evident in the first osmotrophic level (phytoplankton and bacteria), it was lost further up the food web, masked under the impact of grazing exerted by predators such as heterotrophic flagellates, ciliates and dinoflagellates. This was partly proved by two dilution experiments. This study demonstrates the important role of atmospheric deposition and protist grazing when evaluating the effect on oligotrophic systems characterized by increased numbers of trophic levels

Ionomics

<p>Trace elements in their ionic form mediate biochemical reactions in human cells by acting as enzyme cofactors or centers for stabilizing protein structures. Deficit or accumulation of these substances lead to cell toxicity and severe diseases in humans and therefore, intracellular trace ion concentrations (i.e. the "ionome") must be tightly controlled. Inductively coupled plasma mass spectrometry (ICP-MS) was used to determine and quantify the intracellular trace ion concentrations. In ionomics assays HEK cells overexpressing a particular doxycycline-inducible SLC transporter were used to quantify the change of inorganic ions by ICP-MS upon cell lysis. ICP-MS based ionomics is rather a low throughput assay, as a significant volume of sample is required.</p&gt

Hypoxia-inducible factor-1 alpha (HIF-1 alpha) expression in placentae of women with iron deficiency anemia and beta-thalassemia trait

Objective: To investigate hypoxia-inducible factor-1 alpha (HIF-1 alpha) expression in placentae of women with iron-deficiency anemia and beta-thalassemia trait and to correlate the results with hematological parameters as well as with parameters associated with the outcome of pregnancy. Methods: About 126 women who delivered in the Larissa University Hospital were divided in three groups: iron-deficiency anemia (n = 39), beta-thalassemia trait carriers (n = 53) and control group (n = 34). HIF-1 alpha expression was assessed with immunochemical assays and statistical analysis was performed with chi-squared test and ANOVA. Results: HIF-1 alpha immunostaining was intense in the two groups of anemia. A statistically significant association was found between HIF-1 alpha immunoreactivity and hematocrit (p<0.001), hemoglobin (p<0.001), MCV (p<0.001), transferrin (p<0.001) and its receptors (p = 0.040), whereas no significant correlations were observed between HIF-1 alpha, iron serum levels (p = 0.256) and ferritin (p = 0.232). We found no association between HIF-1 alpha and birthweight (p = 0.256), placental weight (p = 0.870) and Apgar score at 1' (p = 0.210) and 5' (p = 0.400). Conclusions: HIF-1 alpha expression is affected by anemia, although this factor has no important direct effect on the perinatal outcome