193 research outputs found
CLOSING THE BORDERS TO END HUMAN TRAFFICKING: MORAL PANIC AND THE NEW OFFICIAL STATE POLITICS ON THE REFUGEE CRISIS IN GREECE
No full textThis article traces the incident on the Greece-Turkey border in spring 2020 as a turning point in asylum seeker flow management in Greece. It argues that the handling of the event can be approached using moral panic theory, and it explains why the government has chosen its tough stance against these people. It further explores the government's rhetoric during this event and the consequences of this shift both on the asylum policies leading to pushbacks and on the legitimization of these policies within the Greek society, which could be claimed to have made the Pylos shipwreck acceptable, as examined in its last section. Copyright: © 2024, Dimitra Mareta
Structural and dynamic properties of translocase motor SecA:
No full textSecA is a large, 204 kDa, homodimeric, helicase-like protein that is a key component of the bacteria protein secretion machinery. SecA, being a motor protein, couples the translocation of polypeptide segments across or into biological membranes with the expenditure of metabolic energy extracted from ATP hydrolysis. SecA adopts a compact conformation in the cytoplasm but switches to a relaxed one when is engaged to translocation at the membrane. Specific interaction of SecA with SecYEG induces large conformational changes to both partners that result in the stimulation of SecA’s ATPase activity and trigger the opening of the channel.
We use a combination of NMR spectroscopy, Isothermal Titration Calorimetry (ITC) and biochemical techniques to characterize E. coli SecA along the protein secretion pathway. Recent advances in isotope labeling and NMR methodology (methyl-TROSY) enabled the NMR study of SecA.
We found that the nucleotide binding cleft of SecA exists in a metastable state that undergoes a disorder-order transition upon nucleotide binding. Our data show that SecA uses a novel mechanism wherein conserved regions lining the cleft undergo cycles of disorder-order transitions while switching among functional catalytic states. The structural relation of SecA to helicases suggests that these proteins may utilize similar mechanisms to convert the ATP binding/hydrolysis energy to mechanical work.
Our data reveal that C domain undergoes cycles of detachment and rebinding to the motor that are linked with the ATPase activation of SecA. When the contacts with the C domain are loosened, SecA becomes activated and this process is probably facilitated by the membrane. Moreover, allosteric communication between the preprotein binding and the motor domain of SecA is regulated by nucleotide and signal peptide binding. Finally, we found that the extreme C terminus of SecY (C6 loop) contacts both the motor and the C domain of SecA and we identified important residues from the loop C6 that mediate this interaction.
In summary, our studies revealed the intimate relation between flexibility and catalytic efficiency in SecA as well the allosteric communication among the domains.Ph.D.Includes bibliographical references (p. 131-144)by Dimitra Keramisano
Geolinguistic spaces and the geopolitics of organization studies: movements across centers and peripheries: European group for organisational studies colloquium
No full textAcademic knowledge production and evaluation has been studied as a phenomenon situated across global and (semi)peripheral contexts (Lillis and Curry, 2010; Bennett, 2014). The metaphor of scales draws attention to the study of academic discourses as practices that develop across vertical, hierarchically organized layers (Blommaert, 2010). In this paper, we draw on 3 sub-corpora of organization studies journal articles, with each journal occupying a different position in the impact factor continuum. Building on the work of Lillis and Curry (2010), we study networked activities as social capital in the global academic economy. In our analysis we first examine the epistemological profile of organisation studies, as reflected in differentially ranked journals located in European contexts. We then explore the complex configuration of spaces/localities within and around which the production of knowledge takes place, by examining networks of author affiliations in relation to the identified sites in the empirical papers included in the corpus. Finally, we examine how constructions of the ‘local’ and the ‘global’ relate to the themes foregrounded in the aims and scope of each journal and we explore how discourses of the ‘local’ and the ‘global’ relate to key concepts in the field of organization studies, including institutions, alternatives and resistance, as well as power and gender
Για το βιβλίο «Το ξίφος του πνεύματος». Βιβλίο, πολιτισμική ηγεμονία και άκρα δεξιά στην Ελλάδα μετά το 1974 της Άννας Καρακατσούλη
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Contemporary Southeastern Europe / The Abolition of University Asylum as the Inauguration of the Era of (New) Authoritarianism in Greece
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Contemporary Southeastern Europe / Can Christian Nationalism ExplainAnti-Vaccination Attitudes AgainstCOVID-19 in Greece?
No full textThis paper examines the attitudes of the people participating inprotests against COVID-19 (mandatory) vaccination in Athens,Greece. The central question is to examine whether the protestersadopt the main theses of Christian nationalism and opposition toscience, as expressed and theorised in the United States, byexamining an indicative sample of participants in these protests.The paper first examines the Greek context regarding the COVID-19 pandemic. Second, it presents the theoretical context ofChristian nationalism and, finally, it presents the questionnaireand the findings from field research conducted by the authorduring these Athens protests in summer 2021. As such, the papercontributes to the knowledge gap regarding Christian nationalismbeyond the American context and introduces this topic for the firsttime with regard to Greece
Theories of dictatorship: from Juan Donoso Cortés to Carl Schmitt
No full textThe present dissertation “Theories of Dictatorship: From Juan Donoso Cortés to Carl Schmitt” focuses on the theories and the evolution of the concept of dictatorship from 1848 until 1939 with an emphasis on the relation between Carl Schmitt and his three main influencers, Joseph de Maistre, Louis de Bonald and Juan Donoso Cortés. The dissertation addresses the theory of dictatorship as theory of the state and more specifically as theory of the state in crisis, as theory of counterrevolution and as theory of counter-Enlightenment with a focus on irrationalism and the personalist paradigm of sovereignty with reference to a theological point of view of the politics. It explores the relation between theology and politics, between political theology and sovereignty, between specific notions of sovereignty with the concept of dictatorship. It adresses the issues set by the philosophy of Donoso Cortés and Schmitt, as these two thinkers are among the most important ones, when we adress the subject of the theological aspects of politics. They propose a concept of sovereignty and politics according to the paradigm of the Catholical Church and inspired by Catholicism. Especially with regard to Schmitt, although his philosophy has been scrutinized with regard to his most famous works, such as Political Theology or The Concept of The Political, in my research the gravity is on his Constitutional Theory, The Dictatorship and The Guardian of the Constitution. My research proposal is to read him by approaching his thought as crystallized in these works as the horizon of his whole philosophy. My dissertation research also includes the study of two major Catholic thinkers, Joseph de Maistre and Louis de Bonald, and the theological rhetoric of the Franco regime in Spain as a rhetoric referred to and connected with Donoso Cortés and Schmitt.Η παρούσα μελέτη «Θεωρίες της Δικτατορίας: από τον Juan Donoso Cortés ως τον Carl Schmitt» εστιάζει στις θεωρίες και την εξέλιξη της έννοιας της δικτατορίας από το 1848 ως το 1939 με έμφαση στη σχέση ανάμεσα στον Carl Schmitt και τις τρεις μεγαλύτερες επιρροές του, Joseph de Maistre, Louis de Bonald and Juan Donoso Cortés. Η μελέτη θέτει το ζήτημα της δικτατορίας ως θεωρίας του κράτους και, πιο συγκεκριμένα, ως θεωρίας του κράτους σε κρίση, ως θεωρίας της αντεπανάστασης και ως θεωρίας του αντιδιαφωτισμού εστιάζοντας στον ανορθολογισμό και το προσωποκεντρικό υπόδειγμα κυριαρχίας με αναφορά στη θεολογική οπτική της πολιτικής. Διερευνά τη σχέση μεταξύ θεολογίας και πολιτικής, μεταξύ πολιτικής θεολογίας και κυριαρχίας, μεταξύ συγκεκριμένων πλευρών της κυριαρχίας και της δικτατορίας. Θέτει τα ζητήματα τα οποία τίθενται από τη φιλοσοφία των Donoso Cortés και Schmitt, καθώς οι δύο αυτοί στοχαστές είναι από τους πιο σημαντικούς, όταν εξετάζουμε το ζήτημα των θεολογικών πλευρών της πολιτικής. Οι Donoso Cortés και Schmitt προτείνουν μία έννοια της κυριαρχίας και της πολιτικής σύμφωνα με το υπόδειγμα της Καθολικής Εκκλησίας και εμπνευσμένη από τον Καθολικισμό. Ειδικά όσον αφορά τον Schmitt, παρ’ όλο που η φιλοσοφία του έχει γίνει αντικείμενο ενδελεχούς εξέτασης σε σχέση με τα πιο γνωστά έργα του, όπως η Πολιτική Θεολογία και Η Έννοια του Πολιτικού, στην έρευνά μου η βαρύτητα μετατίθεται στη Συνταγματική Θεωρία, τη Δικτατορία και τον Φύλακα του Συντάγματος. Η ερευνητική μου πρόταση είναι να διαβάσουμε τον Schmitt προσεγγίζοντας τη σκέψη του όπως αυτή έχει αποκρυσταλλωθεί σε αυτά τα έργα ως ο ορίζοντας όλης του της φιλοσοφίας. Η έρευνά μου περιλαμβάνει, επίσης, τη μελέτη δύο πολύ σημαντικών Καθολικών στοχαστών, των Joseph de Maistre και Louis de Bonald, και τη θεολογική ρητορική του φρανκικού καθεστώτος στην Ισπανία ως μία ρητορική η οποία αναφέρεται και συνδέεται με τους Donoso Cortés και Schmitt
The right to childhoods : critical perspectives on rights, difference and knowledge in a transient world
No full textThis book offers an engaging study that analyses contemporary childhood by examining new lines of argument about diversity, disability and difference. The author critiques the key issues that affect both adults' and children's quality of life, including market-driven values, poverty and civic disengagement.In this fascinating study, Dimitra Hartas analyses contemporary childhood. She discusses the plurality inherent in childhood and the cultural, ideological, social and biological forces that shape children's experience of growing up in the 21st century. She engages with new lines of argument about diversity, disability and difference, and critiques the big issues that affect both adults' and children's quality of life such as market-driven values, poverty and civic disengagement.Hartas uncovers evidence of how the right to childhood is being violated in both the developed and developing world and how our consumerist culture is shaping children's lives in ways that are not always understood, and advocates the right to childhoods. She concludes by discussing the implications of her findings for both policy and practice in early childhood education, and examines pedagogies that are responsive to ethics, diversity and difference
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