Magnetically doped topological insulators may produce novel states of electronic matter, where for instance the quantum anomalous Hall effect state can be realized. Pivotal to this goal is a microscopic control over the magnetic state, defined by the local electronic structure of the dopants and their interactions. We report on the magnetic coupling among Mn or Co atoms adsorbed on the surface of the topological insulator Bi2Te3. Our findings uncover the mechanisms of the exchange coupling between magnetic atoms coupled to the topological surface state in strong topological insulators. The combination of x-ray magnetic circular dichroism and ab initio calculations reveals that the sign of the magnetic coupling at short adatom-adatom distances is opposite for Mn with respect to Co. For both elements, the magnetic exchange reverses its sign at a critical distance between magnetic adatoms, as a result of the interplay between superexchange, double exchange and Ruderman-Kittel-Kasuya-Yoshida interactions.
A novel, fit-for-purpose, highly sensitive, analytical UPLC-PDA methodology was developed and fully validated, according to ICH, FDA and EMA guidelines, for the rapid and accurate quantification of trans-crocin 4 (TC4) and crocetin (CRC) in mice plasma and brain after i.p. administration. A PDA based methodology shows a wider applicability as it is cost effective and can be easily and seamlessly adopted by the pharma industry. The separation of the analytes was performed on a C18 Hypersil Gold column with 2.5 min run time, employing the internal standard (ISTD) methodology. The two methods were successfully applied for the determination of CRC and TC4 in mouse plasma and brain after i.p. administration of TC4 (50 mg/kg) in a time range of 0-240 min. Due to the selection of i.p. administration route, the first-pass metabolism and/or gastric hydrolysis were bypassed, a fact that enhanced the bioavailability of TC4. Furthermore, TC4 was found to be capable of crossing the Blood Brain Barrier (BBB) and build up levels in the mouse brain, regardless of its highly hydrophilic character. CRC was not detected in any plasma or brain sample, although it has been reported that TC4 quickly hydrolyzes to CRC after p.o. administration. Therefore i.p. administration could be used in the case of TC4 for the accurate determination of its biological role. Overall, the developed methodology offers important information about the bioavailability of TC4 in mouse plasma and for the first time, demonstrates the ability of TC4 to penetrate the BBB and localize inside the brain.
A novel, fit-for-purpose, highly sensitive, analytical UPLC-PDA methodology was developed and fully validated, according to ICH, FDA and EMA guidelines, for the rapid and accurate quantification of trans-crocin 4 (TC4) and crocetin (CRC) in mice plasma and brain after i.p. administration. A PDA based methodology shows a wider applicability as it is cost effective and can be easily and seamlessly adopted by the pharma industry. The separation of the analytes was performed on a C18 Hypersil Gold column with 2.5 min run time, employing the internal standard (ISTD) methodology. The two methods were successfully applied for the determination of CRC and TC4 in mouse plasma and brain after i.p. administration of TC4 (50 mg/kg) in a time range of 0-240 min. Due to the selection of i.p. administration route, the first-pass metabolism and/or gastric hydrolysis were bypassed, a fact that enhanced the bioavailability of TC4. Furthermore, TC4 was found to be capable of crossing the Blood Brain Barrier (BBB) and build up levels in the mouse brain, regardless of its highly hydrophilic character. CRC was not detected in any plasma or brain sample, although it has been reported that TC4 quickly hydrolyzes to CRC after p.o. administration. Therefore i.p. administration could be used in the case of TC4 for the accurate determination of its biological role. Overall, the developed methodology offers important information about the bioavailability of TC4 in mouse plasma and for the first time, demonstrates the ability of TC4 to penetrate the BBB and localize inside the brain.
The reaction of the syn-bimetallic bis(pentalene)dititanium complex Ti2(μ:η5,η5-Pn†)2 (Pn† = C8H4(1,4-SiiPr3)2) 1 with carbon suboxide (OCCCO, C3O2) results in trimerisation of the latter and formation of the structurally characterised complex [{Ti2(μ:η5,η5-Pn†)2}{μ-C9O6}]. The trimeric bridging C9O6 unit in the latter contains a 4-pyrone core, a key feature of both the hexamer and octamer of carbon suboxide which are formed in the body from trace amounts of C3O2 and are, for example, potent inhibitors of Na+/K+-ATP-ase. The mechanism of this reaction has been studied in detail by DFT computational studies, which also suggest that the reaction proceeds via the initial formation of a mono-adduct of 1 with C3O2. Indeed, the carefully controlled reaction of 1 with C3O2 affords [Ti2(μ:η5,η5-Pn†)2 (η2-C3O2)], as the first structurally authenticated complex of carbon suboxide.
Lots have happened in the East-Mediterranean since the beginning of the third millennium. A list of the main events reveals a long series of issues that took place in the region and heavily affect it. The impact of these issues and events will stay with us for the foreseeable future and is heavily discernible in the relations between the eastern- Mediterranean non- Arab littoral countries: Turkey, Israel, Greece and Cyprus. This list includes, for example, the 2000s deteriorating relations between Turkey and Israel (in 2016 the two resumed full diplomatic relations); the current crises in the relations between Turkey several Middle Eastern countries (Egypt, Syria, Iraq); the civil war that rages in Syria since 2011 and Turkey’s deep involvement in it; acts of Islamist led terrorism, attacks by ISIS1, and manifestations of religious extremism that heavily affect daily life, economies and tourism in Turkey, Egypt, Jordan, Iraq, as well as in other places; illegal immigrants, refugees and asylum seekers that inundate Turkey, Greece (and via them) many EU countries; energy explorations in the Mediterranean Sea; issues related to civil rights, minorities, the growing tendencies towards strong executives and authoritarian regimes at the expense of democracy and pluralism; heavy internal changes like the decline of Turkish Kemalism, the growing impact of religion in Israel and Turkey, and the fi nancial crisis of Greece; In addition, the struggle for self-determination of various ethnic groups and peoples (the Kurds, the Palestinians, and others); the Russian reappearance, American disappearance and the EU weak impact on events in the Middle East and the Eastern – Mediterranean - - these and subjects have brought about dramatic changes in the Eastern Mediterranean sub-system. 1. See at the end of this text: ANNEX: Evidence on the Collaboration of Turkey with ISIS and other jihadist groups, as well as relevant testimonies from international sources. From the Turkish standpoint, the events in our region express what is happening in the global arena: Europe is aging, its economy and currency are limping and convulsing, and the EU radiates political disintegration (the Brexit) and economic weaknesses. The US is suffering from an economic crisis, it is globally and politically on the decline, internally it is also on the decline following the eight years’ presidency of Barak Obama, and the November 2016 election of President Donald Trump. Simultaneously, other powers (China, Russia) strive to replace American hegemony all around the globe. Also from the standpoint of Ankara, Turkey desires to be now a rising «uneasy» power, and is demarcating the limits of its infl uence: Central Asia, the Caucasus and the Balkans, on the one hand; black Africa, North Africa, and the Middle East, on the other. Following several setbacks, Turkish- Russian relations are developing and disagreements have been settled. And all these developments and events have greatly affected the three eastern - Mediterranean non - Muslim countries (Greece, Israel, Cyprus), and the region’s sole non- Arab but Muslim country- Turkey. In our paper we will make an attempt to describe and analyze the major impacts that these events and issues have had on the developments in the eastern- Mediterranean, with particular focus on Turkey and Israel, and the growing cooperation between Greece and Israel.
The discovery of Weyl semimetals represents a significant advance in topological band theory. They paradigmatically enlarged the classification of topological materials to gapless systems while simultaneously providing experimental evidence for the long-sought Weyl fermions. Beyond fundamental relevance, their high mobility, strong magnetoresistance, and the possible existence of even more exotic effects, such as the chiral anomaly, make Weyl semimetals a promising platform to develop radically new technology. Fully exploiting their potential requires going beyond the mere identification of materials and calls for a detailed characterization of their functional response, which is severely complicated by the coexistence of surface-and bulk-derived topologically protected quasiparticles, i.e., Fermi arcs and Weyl points, respectively. Here, we focus on the type-II Weyl semimetal class in which we find a stoichiometry-dependent phase transition from a trivial to a nontrivial regime. By exploring the two extreme cases of the phase diagram, we demonstrate the existence of a universal response of both surface and bulk states to perturbations. We show that quasiparticle interference patterns originate from scattering events among surface arcs. Analysis reveals that topologically nontrivial contributions are strongly suppressed by spin texture. We also show that scattering at localized impurities can generate defect-induced quasiparticles sitting close to the Weyl point energy. These give rise to strong peaks in the local density of states, which lift the Weyl node, significantly altering the pristine low-energy spectrum. Remarkably, by comparing the WTe2 and the MoTe2 cases we found that scattering response and topological transition are not directly linked. Visualizing the existence of a universal microscopic response to scattering has important consequences for understanding the unusual transport properties of this class of materials. Overall, our observations provide a unifying picture of the type-II Weyl phase diagram.
Hepatitis B virus (HBV) infection constitutes a global public health problem. In order to establish how HBV was disseminated across different geographic regions, we estimated the levels of regional clustering for genotypes D and A. We used 916 HBV-D and 493 HBV-A full-length sequences to reconstruct their global phylogeny. Phylogeographic analysis was conducted by the reconstruction of ancestral states using the criterion of parsimony. The putative origin of genotype D was in North Africa/Middle East. HBV-D sequences form low levels of regional clustering for the Middle East and Southern Europe. In contrast, HBV-A sequences form two major clusters, the first including sequences mostly from sub-Saharan Africa, and the second including sequences mostly from Western and Central Europe. Conclusion: We observed considerable differences in the global dissemination patterns of HBV-D and HBV-A and different levels of monophyletic clustering in relation to the regions of prevalence of each genotype.
{The purpose of the present study was to determine whether a battery of anthropometric and lower and upper body strength, speed and power tests predicted selection of young volleyball players for a Junior National Team by expert coaches. Fifty-two male junior volleyball players (14.8±0.5 yrs, height: 1.84±0.05 m, body mass: 72.5±7.1 kg) took part in a training camp and underwent a selection procedure by expert coaches' of the junior national team. Anthropometric data and fitness tests results were obtained and players were graded on a scale from 0 to 100 on the basis of their performance in a volleyball tournament. Selected players were superior in the majority of measured variables (p≤0.017) and had higher grading scores compared with non-selected players (85.3±4.1 vs. 70.5±5.6, respectively, p<0.01). The combination of spike jump and reach test (SJR) and 3 kg medicine ball throw velocity (MB3) explained 63.5% of the variance in expert coaches' grading (p<0.001). A multivariate discriminant analysis yielded a significant discriminant function (Wilk's lambda= 0.55, χ= 29.324, p<0.001, η=0.82). SJR and MB3 were the only variables that contributed to the discriminant function (standardized function coefficients: SJR = 0.68
Principal component analysis (PCA) is being extensively used in Astronomy but not yet exhaustively exploited for variability search. The aim of this work is to investigate the effectiveness of using the PCA as a method to search for variable stars in large photometric data sets. We apply PCA to variability indices computed for light curves of 18 152 stars in three fields in M 31 extracted from the Hubble Source Catalogue. The projection of the data into the principal components is used as a stellar variability detection and classification tool, capable of distinguishing between RR Lyrae stars, long-period variables (LPVs) and non-variables. This projection recovered more than 90 per cent of the known variables and revealed 38 previously unknown variable stars (about 30 per cent more), all LPVs except for one object of uncertain variability type. We conclude that this methodology can indeed successfully identify candidate variable stars.
We have determined the membership of 46 open clusters. For the nine clusters within 250pc we determined optimised parallaxes based on the combined information extracted from the measured parallax and proper motion values. These clusters are : in Tables A1a & A3: alphaPer, Blanco1, ComaBer, Hyades, IC2391, IC2602, NGC2451A, Pleiades, Praesepe. The remaining 37 clusters are in Table A1b & A4: Coll140, IC4651, IC4665, IC4725, IC4756, NGC0188, NGC0752, NGC0869, NGC0884, NGC1039, NGC1901, NGC2158, NGC2168, NGC2232, NGC2323, NGC2360, NGC2422, NGC2423, NGC2437, NGC2447, NGC2516, NGC2547, NGC2548, NGC2682, NGC3228, NGC3532, NGC6025, NGC6281, NGC6405, NGC6475, NGC6633, NGC6774, NGC6793, NGC7092, Stock2, Trump02, Trump10. (4 data files).
Our analysis was performed on the iDR4 consisting of ~260000 single exposures (corresponding to ~100 000 stacked spectra) of about 51000 distinct stars observed with the FLAMES instrument feeding the optical spectrographs GIRAFFE (with setups HR3, HR5A, HR6, HR9B, HR10, HR14A, HR15N, HR15, HR21) and UVES (with setups U520 and U580) covering the optical and near-IR wavelength ranges. (5 data files).
We used archival observations of NGC 4535 taken with the HST WFPC2 as part of the HST Key Project. We used 13 epochs of F555W (equivalent to Johnson V) and 9 epochs of F814W (equivalent to Kron-Cousins I). The F555W data consisted in total of eight 3x1200 sec exposures and five 4x1300s exposures, while the F814W of nine 3x1300s exposures. (1 data file).
We have observed two fields in the northern disc of M31 in a large programme (LP) of XMM-Newton (PI: M. Sasaki). The data were taken with the European Photon Imaging Cameras (EPICs) in full-frame mode using the thin filter for the pn camera (EPIC-pn) and the medium filter for the two MOS cameras (EPIC-MOS1/2), in order to minimise the contamination by background but to maximise the sensitivity for soft diffuse emission. Each of the two fields was observed twice. (6 data files).
Plant species grown in the Mediterranean region have been selected for an experimental study regarding plant ability to endure harsh, abiotic conditions such as water deficiency. Young plants of Ceratonia siliqua L., Myrtus communis L., Nerium oleander L., Rosmarinus officinalis L. and Pittosporum tobira (Thunb.) were placed in elongated plastic tubes and rhizotrons, which allow non-destructive observations of plant material, and were grown under controlled light and temperature conditions, with varying irrigation patterns in a growth chamber, for a 30-day period. Sugar, proline and chlorophyll content were measured in above and below ground tissues of the considered species, during the 30-day experimental period. The results show that Ceratonia siliqua, Myrtus communis and Nerium oleander are more capable of enduring drought conditions, in comparison to Rosmarinus officinalis L. and Pittosporum tobira (Thunb.). The results can be used for planning green urban landscapes with introduction of naturalistic planting, using plant species adapted to the scarcity of water during prolonged, ambient drought conditions.
This paper examines Greek invitations as first pair parts of an adjacency pair within the framework of Conversation Analysis. The focus of our research is on impromptu invitations issued via polar negative-interrogative constructions and the effects this type of con- struction has on the interactional organization of the whole invitation-response sequence. It is suggested that the issuing of the invitation by means of this particular syntactic choice has ramifications for the unfolding of the interaction with respect to sequencing and preference organization. Specifically, it is maintained that impromptu invitations issued by means of polar negative-interrogatives in Greek tend to trigger markedly delayed accep- tances. It is suggested that the explanation for this phenomenon lies in the “cross-cutting” preferences built in the construction when used to make impromptu invitations.
This paper examines Greek invitations as first pair parts of an adjacency pair within the framework of Conversation Analysis. The focus of our research is on impromptu invitations issued via polar negative-interrogative constructions and the effects this type of construction has on the interactional organization of the whole invitation-response sequence. It is suggested that the issuing of the invitation by means of this particular syntactic choice has ramifications for the unfolding of the interaction with respect to sequencing and preference organization. Specifically, it is maintained that impromptu invitations issued by means of polar negative-interrogatives in Greek tend to trigger markedly delayed acceptances. It is suggested that the explanation for this phenomenon lies in the “cross-cutting” preferences built in the construction when used to make impromptu invitations.
This paper is concerned with the Greeks’ unfavorable perceptions of the ‘Turk’ among and suggests that they are part of a psychological barrier which constitutes one of the major factors underlining Greek-Turkish relations. It examines how these perceptions have been set by Greek historiography and complemented by popular to this day works of literature from a previous period. It maintains that despite the rapprochement between Greece and Turkey, they cannot be expected to sharply change because they are part of the deeply ingrained in the Greek psyche national schema. However, in the light of findings of empirical research, it also argues that the picture is more complicated because a less-stereotypical image of the Turk has been accepted by more Greeks than in the recent past.
PSR J2032+4127 is a young and rapidly rotating pulsar on a highly eccentric orbit around the high-mass Be star MT91 213. X-ray monitoring of the binary system over an ∼4000 d period with Swift has revealed an increase of the X-ray luminosity which we attribute to the synchrotron emission of the shocked pulsar wind. We use Swift X-ray observations to infer a clumpy stellar wind with r-2 density profile and constrain the Lorentz factor of the pulsar wind to 105 < γw < 106. We investigate the effects of an axisymmetric stellar wind with polar gradient on the X-ray emission. Comparison of the X-ray light curve hundreds of days before and after the periastron can be used to explore the polar structure of the wind.
ATel #12209 reported the detection of a new X-ray transient in the Small Magellanic Cloud (SMC), Swift J005139.2-721704, exhibiting outbursting activity. The system has been classified as a new SMC high-mass X-ray binary based on its identification with the B-type star [M2002]20671.
Οι Εθνομάρτυρες αποτελούν θεμελιακό στοιχείο της εθνικής ιδιοσυστασίας των νεωτερικών κρατών είτε αυτή υφίσταται ως συνέχεια μιας προ-εθνικής ταυτότητας είτε τυγχάνει αποτέλεσμα σύγχρονης εθνογένεσης. Στην παλαιά βυζαντινή ενδοχώρα, στα σκληρά Βαλκάνια και τη θεήλατο Ανατολή, ο Ελληνισμός συνεχίζει να ολοκληρώνεται μέσα στην Εκκλησία. Παράγει, δηλαδή, μία θεολογία γεγονότων εντός της οποίας ο Ιερομάρτυρας ταυτίζεται με τον Εθνομάρτυρα και βιώνεται η διαλεκτική σχέση μεταξύ αγωνιστή και αγίου. Καθώς η αρχαία Εκκλησία θεμελιώθηκε στο αίμα των Μαρτύρων έτσι και η Εκκλησία της Ελλάδος αναζήτησε τους οικείους Μάρτυρες, μέσω των οποίων θεμελίωσε τη θεολογία και την ταυτότητά της. Και τους αναζήτησε στον εξ αίματος ποταμό της ευσεβείας, το Οικουμενικό Πατριαρχείο, εκ του οποίου συνεχώς εκχέεται το περιούσιο πλήθος Εθνομαρτύρων και Ιερομαρτύρων.
Στην παρούσα μελέτη επιχειρείται μια ανίχνευση, με την οπτική της Ψυχολογίας, των πολλών και ποικίλων όψεων της μοναξιάς, αυτού του ουσιώδους βιώματος της ανθρώπινης ύπαρξης, στον ελληνικό πολιτισμό, με έμφαση στην παραδοσιακή ελληνική κοινωνία. Μετά τις εννοιολογικές αποσαφηνίσεις, παρουσιάζονται όψεις της επώδυνης και της ευεργετικής μοναξιάς, όπως αυτές εκδηλώνονταν στον ελληνικό λαϊκό βίο και διατυπώνονται σκέψεις σχετικά με τη σημασία της μοναξιάς για τη νεοελληνική αυτοσυνείδηση.
In this essay, we attempt to trace the many faces of loneliness, which is an essential experience of human existence, in the Greek culture, especially in the traditional Greek society, from the viewpoint of Psychology. Following some conceptual clarifications and references to the Greek language, we describe facets of painful aloneness (i.e., loneliness) and beneficial aloneness (i.e., solitude), as exhibited in life within the traditional Greek context. Finally, some thoughts on the significance of loneliness for the neo-hellenic identity are expressed.
This paper uses rich ethnographic material deriving from fieldwork carried out by the author in Tarpon Springs, a small city in Florida boasting a significant Greek community with a background in sponge diving and the sponge trade. I look at the performance of the Epiphany ritual in this city, where about fifty Greek Orthodox American male adolescents aged 16-18 dive in the waters of Spring Bayou to retrieve the Cross cast by the Greek Orthodox Archbishop of America every year on 6 January, in a reenactment of Christ’s Baptism in the Jordan. I analyse the ritual both historically and synchronically in order to show how it functions as a framework for the communal initiation of Greek Orthodox American adolescents into their roles as responsible members of their parishes and communities. When sponge diving was widely practised in Tarpon Springs, such adolescents used to dive for the Cross to secure good weather and calm seas for the sponge-boats. Today they continue to bring the blessing of the Church in symbolic terms to their community, which they do by diving for the Cross, by conducting a procession, in which the Cross is borne aloft, and by singing hymns in the Sponge Docks and in the Greek area of the city.
Giovani C, Kamberidou I, Patsantaras N. ΕΠΑΝΕΞΕΤΑΖΟΝΤΑΣ ΤΗΝ ΚΟΙΝΩΝΙΚΗ ΣΗΜΑΣΙΑ ΤΗΣ ΦΥΣΙΚΗΣ ΑΓΩΓΗΣ ΚΑΙ ΤΗ ΘΕΣΗ ΤΗΣ ΣΤΟ ΣΗΜΕΡΙΝΟ ΣΧΟΛΕΙΟ. In: «Η κοινωνιολογία και ο δημόσιος ρόλος της στην εποχή της μεταμόρφωσης του κόσμου»: 6ο ΣΥΝΕΔΡΙΟ ΤΗΣ ΕΛΛΗΝΙΚΗΣ ΚΟΙΝΩΝΙΟΛΟΓΙΚΗΣ ΕΤΑΙΡΕΙΑΣ (ΕΚΕ) - HELLENIC SOCIOLOGICAL SOCIETY (HSS), March 28-31, 2018 Athens, Greece. Athens Greece. Συνεδρία: ΚΟΙΝΩΝΙΟΛΟΓΙΑ ΤΗΣ ΕΚΠΑΙΔΕΥΣΗΣ: ΕΛΛΗΝΙΚΗ ΚΟΙΝΩΝΙΟΛΟΓΙΚΗ ΕΤΑΙΡΕΙΑ (EKE); 2018.Abstract
Η Φυσική αγωγή (ΦΑ), ως μάθημα στην Πρωτοβάθμια και Δευτεροβάθμια Εκπαίδευση χαρακτηρίζεται από την ιδιαιτερότητά της , καθώς περιλαμβάνει την οργανωμένη και συστηματική κινητική δραστηριότητα των μαθητών/μαθητριών μέσα από βιωματικές και διαθεματικές προσεγγίσεις. Όπως επισημαίνεται από ένα σημαντικό αριθμό ερευνητικών δεδομένων μέσα από το παιχνίδι και τις αθλοπαιδιές καλλιεργούνται κοινωνικές δεξιότητες και σημαντικές κοινωνικές αξίες— όπως η δικαιοσύνη, το ομαδικό πνεύμα, η αλληλεγγύη, ο σεβασμός προς τον αντίπαλο και τους κανόνες— που είναι απαραίτητες για μια ποιοτική κοινωνική συνύπαρξη. Η παρούσα μελέτη αποτελεί μέρος μιας εν εξελίξει ποιοτικής έρευνας και εδράζεται σε μια ενδελεχή ανασκόπηση της σχετικής με αυτό το ζήτημα βιβλιογραφίας στο πλαίσιο της οποίας διαπιστώνεται, αφ’ ενός η σημαντικότητα της ΦΑ για την προετοιμασία σωματικά, ψυχικά και κοινωνικά ενεργών πολιτών και αφ’ ετέρου διαπιστώνεται ότι οι υλικοτεχνικές υποδομές και ο χρόνος που διατίθεται στο σχολικό πρόγραμμα για το μάθημα της ΦΑ λειτουργούν αναντίστοιχα για την πραγμάτωση των πολύπλευρων σκοπών που καλείται αυτή να εκπληρώσει. Συμπερασματικά και με βάση τα μέχρι τώρα ερευνητικά δεδομένα, προτείνεται η αναδιαμόρφωση του σχολικού προγράμματος σχετικά με το μάθημα της ΦΑ προκειμένου να μπορούν να εφαρμοστούν επιπλέον καινοτόμα προγράμματα και να επιτευχθεί ο απώτερος σκοπός της δια βίου άσκησης.
Ο σκοπός της παρούσας διπλωματικής εργασίας είναι ο εξής: (α) να συγκρίνει την αυτοεκτίμηση των δυσλεκτικών και των μη δυσλεκτικών παιδιών ηλικίας 11-12 ετών,(β) να συσχετίσει την αυτοεκτίμηση των παιδιών με την αποδοχή-απόρριψη από τον/την εκπαιδευτικό και (γ) να συγκρίνει τους παραπάνω παράγοντες ως προς το φύλο των συμμετεχόντων. Το δείγμα της έρευνας προέρχεται από 6 δημόσια σχολεία της Α’ Περιφέρειας της Αττικής και αποτελείται από 118 μαθητές ελληνικής καταγωγής (21 δυσλεκτικοί & 97 μη δυσλεκτικοί) που φοιτούν στην Ε’ και ΣΤ’ Δημοτικού και τους δασκάλους τους (N = 12). Τα μέσα συλλογής των δεδομένων για το δείγμα των μαθητών αποτελούν τα εξής δύο ερωτηματολόγια: «Πώς Αντιλαμβάνομαι τον Εαυτό μου ΙΙ» (Μακρή-Μπότσαρη, 2013) και «Child Teacher Acceptance-Rejection/Control Questionnaire-Short Form» (Kourkoutas, Propersi, & Georgiadi, 2013). Το δείγμα των εκπαιδευτικών συμπλήρωσε το ερωτηματολόγιο «Κλίμακα της Σχέσης Δασκάλου-Μαθητή» (Galanaki & Vassilopoulou, 2007) για τον κάθε μαθητή. Τα βασικά αποτελέσματα της έρευνας είναι ότι η αυτοεκτίμηση των δυσλεκτικών παιδιών είναι χαμηλότερη από αυτή των μη δυσλεκτικών, όπως επίσης και ότι η αυτοεκτίμηση των μαθητών συσχετίζεται με την αποδοχή-απόρριψη από τον/την εκπαιδευτικό. Τέλος, ένα βασικό εύρημα είναι ότι η αποδοχή-απόρριψη από τον δάσκαλο βιώνεται διαφορετικά από τους μαθητές ανάλογα το φύλο τους, ενώ από την μεριά του εκπαιδευτικού, το φύλο του μαθητή δεν επηρεάζει τη μεταξύ τους σχέση.
Κουκουνάρας- Λιάγκης Μ. Η έρευνα-δράση ως προσωπική ανάγκη του εκπαιδευτικού. Αναστοχασμός και συνεργασία, με σκοπό τον μετασχηματισμό. In: Κατσαρού Ε, Τσάφος Β Ορίζοντας την έρευνα-δράση στην Ελλάδα. Στην προοπτική διαμόρφωσης μιας επαγγελματικής κοινότητας εκπαιδευτικών ερευνητών. Πρακτικά 1ου Πανελλήνιου Συμποσίου (Ρέθυμνο, 27-06-2015). Αθήνα και Ρέθυμνο, Τμήμα Φιλοσοφικών και Κοινωνικών Σπουδών, Πανεπιστήμιο Κρήτης-Τμήμα Εκπαίδευσης και Αγωγής στην Προσχολική Ηλικία, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών; 2018. pp. 101-121.Abstract
Ο εκπαιδευτικός, που αναστοχάζεται τα σχέδια του, την εφαρμογή τους και τα αποτελέσματά της στη μάθηση και τη ζωή των προσώπων της σχολικής κοινότητας, οδηγείται στην αναζήτηση τρόπων ολοκληρωμένης και αυτόνομης αυτό-εκπαίδευσης στην υπηρεσία της αυτό-ανάπτυξης και αυτό-κατανόησης με σκοπό την αλλαγή. Η λύση σε ένα υπάρχον σύστημα και σε ένα πολιτιστικά κατασκευασμένο πλαίσιο φαίνεται να είναι η σύζευξη έρευνας και δράσης. Η ανακοίνωση στηρίζεται στην εμπειρία έρευνας-δράσης σε γυμνάσιο των Αχαρνών, που διαρκεί από το 2012.
This paper presents a brief literature review on the impact of Waldorf education on students’ and graduates’ socio-emotional health. The main elements of Waldorf education which contribute to socio-emotional health are identified and described, namely, integration of the arts, movement and play, promoting relationships, reconnecting with nature, and spiritual development. Finally, the positive impact of Waldorf education on the reduction of attention deficit hyperactivity disorder is analyzed.
GR: Η Συριακή κρίση έχει λάβει σηµαντικές διαστάσεις και έχει απασχολήσει εκτεταµένα τόσο την κοινή γνώµη όσο και την επιστηµονική κοινότητα. Όπως και σε αντίστοιχες περιπτώσεις συγκρούσεων, είναι δύσκολο να βρεθούν δεδοµένα που να περιγράφουν τις χωρο-χρονικές διαστάσεις της κρίσης. Κατά συνέπεια, γίνεται προσπάθεια να µελετηθεί η Συριακή κρίση µε βάση δορυφορικές εικόνες που είναι διαθέσιµες ως ανοικτά δεδοµένα για την εν λόγω περίοδο. Συγκεκριµένα, χρησιµοποιούνται δορυφορικές εικόνες νύκτας που καταγράφουν µε αρκετή ακρίβεια τις κοινωνικό-οικονοµικές επιπτώσεις στον χώρο. Από την ανάλυση των δορυφορικών εικόνων προκύπτουν οι επιπτώσεις της κρίσης διαχρονικά και χωρικά µε αρκετά συγκεκριµένο τρόπο. Κάτι που δύσκολα µπορεί να επιτευχθεί βάσει οποιασδήποτε άλλης πηγής πληροφοριών για τη συγκεκριµένη ή για παρόµοιες πολεµικές συρράξεις. ΕΝ: The Syrian crisis has gained significant attention both in the scientific community and in the general public. As in similar conflict cases, data that capture the spatio-temporal dimensions of the crisis are hard to find. Consequently, we attempt to study the Syrian conflict using satellite images, available as open domain data, for the relevant time period. In specific, night-light images that record sufficiently accurately the socioeconomic impacts, with a distinctive geographic dimension, are used. The impacts of the crisis are relieved in time and space quite specifically, based on the analysis of the imagery. This result is hard to be achieved based on any other information source in this particular or other similar war zones.
Το νέο βιβλίο του Δημήτρη Πλάντζου προσφέρει μια εμπεριστατωμένη επισκόπηση της αρχαίας ελληνικής ζωγραφικής μέσα από τα σωζόμενα μνημεία. Παράλληλα, επιχειρεί μια μοναδική στο είδος της διεπιστημονική μελέτη των αρχαιολογικών καταλοίπων μέσα από τις φιλοσοφικές αντιλήψεις και θεωρητικές προσεγγίσεις τόσο της αρχαιότητας όσο και του καιρού μας. Με τη βοήθεια των αρχαίων φιλολογικών πηγών – από τον Πλάτωνα και τον Ξενοφώντα στον Κικέρωνα, τον Πλίνιο, τον Λουκιανό και τον Φιλόστρατο – ο συγγραφέας αναλύει εικονογραφικές και τεχνοτροπικές τάσεις της αρχαίας ζωγραφικής, επανεξετάζοντας παράλληλα και τις απόψεις της σύγχρονης έρευνας. Με συχνές αναφορές στην ιστορία της τέχνης, την ανθρωπολογία, την ψυχανάλυση, και τις πολιτισμικές σπουδές, το βιβλίο προτείνει μια νέα, ρηξικέλευθη ματιά στον κόσμο της αρχαιοελληνικής ζωγραφικής.
Μετά από μια συνοπτική αναφορά στην ελλαδική ζωγραφική της Εποχής του Χαλκού (Κυκλάδες, Κρήτη, Θήρα, Μυκηναϊκή Ελλάδα), το βιβλίο καλύπτει τις τεχνικές, τεχνοτροπικές, εικονογραφικές και αισθητικές εξελίξεις κατά την Αρχαϊκή, την Κλασική, και την Ελληνιστική περίοδο, για να ολοκληρωθεί με τη μελέτη της ζωγραφικής του ελληνορωμαϊκού κόσμου, έως τον 2ο-3ο αι. μ.Χ. Καλύπτονται έτσι όχι μόνον οι σημαντικότερες περίοδοι της ελληνικής ζωγραφικής από τους προϊστορικούς έως και τους ρωμαϊκούς χρόνους, αλλά και όλα τα περισσότερο ή και λιγότερο γνωστά έργα, καθώς και το έργο των σημαντικότερων ζωγράφων της αρχαιότητας. Η εισαγωγή της μελέτης παρουσιάζει συνοπτικά τα υλικά και τις μεθόδους της αρχαίας ζωγραφικής, ενώ παράλληλα αναλύει τις σύγχρονες τεχνικές και θεωρητικές ερευνητικές μεθόδους. Το κείμενο συνοδεύεται από εξαντλητική έγχρωμη εικονογράφηση, πλήρη βιβλιογραφία, και ευρετήριο.
Η μελέτη Η τέχνη της ζωγραφικής στον αρχαιοελληνικό κόσμο απευθύνεται στους θαυμαστές της αρχαίας ελληνικής τέχνης, στους μελετητές της κλασικής αρχαιότητας, στους φοιτητές αρχαιολογίας και ιστορίας της τέχνης, και σε κάθε αρχαιόφιλο, Έλληνα ή ξένο (καθώς κυκλοφορεί παράλληλα και στην αγγλική γλώσσα).
Ποια είναι τα μηνύματα της Αποκάλυψης του Ιωάννη στη δυτική λογοτεχνία του εικοστού αιώνα;Πώς διαβάζουν επτά Έλληνες ποιητές μια μπαλλάντα ενός Γερμανού ρομαντικού;Μπορεί να εκφράσει θρησκευτικότητα η ποίηση ενός αγνωστικιστή;Είναι προτιμότερο η θεία λειτουργία στην ελληνική εκκλησία να γίνεται στη σημερινή μας γλώσσα;Τι απεικονίζουν οι ελληνικές επανεγγραφές της Έρημης Χώρας του Έλιοτ;Ποια είναι η εικόνα της Ελλάδας στα έργα των σημερινών Ευρωπαίων συγγραφέων;Μπορεί να γραφεί ένα μυθιστόρημα σε στίχο;Στις ερωτήσεις αυτές, και σε κάποιες άλλες, επιχειρούν να απαντήσουν κριτικά τα κείμενα που απαρτίζουν αυτό το βιβλίο.
