cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Καθαρισμός και μελέτη ιδιοτήτων λυτικού ενζύμου από Thermus Thermophilus
Creators: name: Χουρζαμάνογλου, Γεωργία Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Πολυϋδροξυαλκανοϊκά
Σύστημα έκκρισης
Λυτική δράση
Λυσοζύμη
IagB(πρωτεΐνη επιδρομής)
Thermus thermophilus
Polyhydroxyalkanoates
Secretion system
Lytic activity
Lysozyme
IagB (invasion protein)

description: Το στέλεχος του θερμόφιλου βακτηρίου Thermus thermophilus HB8 έχει την ιδιότητα να συσσωρεύει πολυυδροξυαλκανοϊκά (PHAs) στο εσωτερικό του, όταν αναπτύσσεται σε φτωχό μέσο ανάπτυξης (Minimal Salt Medium, MSM) παρουσία γλυκονικού νατρίου. Τα PHAs μπορούν να βρουν εφαρμογές ως βιοαποικοδομήσιμα πολυμερή αφού είναι θερμοπλαστικά ελαστομερή που έχουν κοινές ιδιότητες με τα πολυπροπυλένια. Συνεπώς, είναι υποψήφια να αντικαταστήσουν σε κάποιο βαθμό τα παραδοσιακά πλαστικά, τα οποία όπως είναι γνωστό δεν μπορούν να αποικοδομηθούν. Η βελτίωση των ιδιοτήτων των PHAs και η μείωση του οικονομικού κόστους σε επίπεδο βιομηχανικής παραγωγής, αναμένεται να οδηγήσει μελλοντικά σε έναν ολοένα αυξανόμενο αριθμό εφαρμογών, σε διάφορα πεδία, όπως στο περιβάλλον, στην ιατρική, κτλ. Στην παρούσα διπλωματική εργασία, επικεντρωθήκαμε στη μελέτη ενός ενζύμου που έχει δράση λυσοζύμης και βρέθηκε ότι εκκρίνεται μόνο από κύτταρα Thermus thermophilus που περιέχουν κόκκους πολυμερούς και όχι από αυτά που δεν έχουν. Αυτό το ιδιαίτερο χαρακτηριστικό των PHAs είναι κάτι που ενδιαφέρει τη μελέτη που γίνεται γι’ αυτά και μας ώθησε σε έρευνα προκειμένου να συλλέξουμε περισσότερα στοιχεία για την υπάρχουσα πρωτεΐνη με λυτική δράση και τις ιδιότητές της. Άλλωστε, γενικά η εξέταση μίας πρωτεΐνης-συστατικού βακτηριακών κυττάρων είναι κάτι που συντελεί στη βασική έρευνα για τα κύτταρα αυτά. Τέλος, ένα ένζυμο με λυτική δράση μπορεί να εμπλέκεται στο μηχανισμό άμυνας των Thermus thermophilus για επιβίωση (λύση του οργανισμού-επαγωγέα του) ή στην έναρξη της παθογένειας των Thermus με τη δυνατότητα προσβολής άλλων βακτηρίων. Ως εκ τούτου είναι ένα ιδιαίτερα ελκυστικό ένζυμο μιας και οι πληροφορίες που συλλέγονται για αυτό μπορούν να οδηγήσουν σε καλύτερη γνώση των μηχανισμών παθογένεσης. Τέλος, επιδιώξαμε να καθηλώσουμε το ένζυμο με τη λυτική δράση σε στήλη αγχιστείας προκειμένου να επιτύχουμε κάποιον βαθμό καθαρισμού της και επιλέξαμε και μία άλλη μέθοδο καθαρισμού η οποία στηρίζεται στη χρήση CuSO4*5Η2Ο
description: In this work, we concentrated on the study of a lytic enzyme secreted when Thermus Thermophilus were grown under PHA accumulation conditions. This enzyme was found to be located at the membanes as well as the cytosol. It's lytic activity was determined with lysoplate and turbidity assay. The optimal pH values of its activity was pH-8 at 25C and the optimal temperature was 65C. This enzyme was purified mostly with affinity chromatography on Chitopearl column.
Dimensional Reduction and (Anti) de Sitter Bounds
Creators: name: Rudelius, Tom
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dimensional reduction has proven to be a surprisingly powerful tool for delineating the boundary between the string landscape and the swampland. Bounds from the Weak Gravity Conjecture and the Repulsive Force Conjecture, for instance, are exactly preserved under dimensional reduction. Motivated by its success in these cases, we apply a similar dimensional reduction analysis to bounds on the gradient of the scalar field potential $V$ and the mass scale $m$ of a tower of light particles in terms of the cosmological constant $Λ$, which ideally may pin down ambiguous $O(1)$ constants appearing in the de Sitter Conjecture and the (Anti) de Sitter Distance Conjecture, respectively. We find that this analysis distinguishes the bounds $|\nabla V|/V \geq \sqrt{4/(d-2)}$, $m \lesssim |Λ|^{1/2}$, and $m \lesssim |Λ|^{1/d}$ in $d$-dimensional Planck units. The first of these bounds precludes accelerated expansion of the universe in Einstein-dilaton gravity and is almost certainly violated in our universe, though it may apply in asymptotic limits of scalar field space. The second bound cannot be satisfied in our universe, though it is saturated in supersymmetric AdS vacua with well-understood uplifts to 10d/11d supergravity. The third bound likely has a limited range of validity in quantum gravity as well, so it may or may not apply to our universe. However, if it does apply, it suggests a possible relation between the cosmological constant and the neutrino mass, which (by the see-saw mechanism) may further provide a relation between the cosmological constant problem and the hierarchy problem. We also work out the conditions for eternal inflation in general spacetime dimensions, and we comment on the behavior of these conditions under dimensional reduction.
description: 23 pages
BreachRadar: Automatic Detection of Points-of-Compromise
Creators: name: Araujo, Miguel
name: Almeida, Miguel
name: Ferreira, Jaime
name: Silva, Luis
name: Bizarro, Pedro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Bank transaction fraud results in over $13B annual losses for banks, merchants, and card holders worldwide. Much of this fraud starts with a Point-of-Compromise (a data breach or a skimming operation) where credit and debit card digital information is stolen, resold, and later used to perform fraud. We introduce this problem and present an automatic Points-of-Compromise (POC) detection procedure. BreachRadar is a distributed alternating algorithm that assigns a probability of being compromised to the different possible locations. We implement this method using Apache Spark and show its linear scalability in the number of machines and transactions. BreachRadar is applied to two datasets with billions of real transaction records and fraud labels where we provide multiple examples of real Points-of-Compromise we are able to detect. We further show the effectiveness of our method when injecting Points-of-Compromise in one of these datasets, simultaneously achieving over 90% precision and recall when only 10% of the cards have been victims of fraud.
description: 9 pages, 10 figures, published in SIAM's 2017 International Conference on Data Mining (SDM17)
Understanding and evaluating large-scale consular emergency response
Creators: name: Tindall, Karen
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: Diplomatic and consular service
subject: Emergency management International cooperation.
subject: Disaster relief International cooperation.
subject: International relations

description: With increasingly mobile societies and greater global interconnectedness, international travel has become cheaper and more streamlined. The number of individuals travelling across increasingly permeable borders continues to grow. Large-scale consular emergencies occur when a large number of foreign nationals are under threat or in distress following a natural disaster, terrorist attack, or escalation of unrest abroad. Presented in a 'thesis by publication' format, this dissertation examines how governments, and in particular foreign ministries, respond to incidents abroad affecting a large number of foreign nationals; the strategic and operational challenges they face in implementing these responses; and how the 'consular' nature of this class of emergency that spans the domestic and international arena, shapes these challenges and response patterns. Drawing on data from Australia, Sweden and the United Kingdom, this dissertation examines the role and performance of foreign ministries during responses to three major incidents abroad: the 2002 Bali bombings, the 2004 Indian Ocean tsunami and the 2006 evacuations from Lebanon. This dissertation sought to understand and evaluate government policies and practices with respect to large-scale consular emergency response, and draw attention to the foreign component of the typically domestic crisis management function of government. In the international environment of large-scale responses, governments have to work and contend with numerous actors. The scale of the emergency necessitates that bureaucracies engage in coordinated whole-of-government responses. Responses spanning both the domestic and international arena require coordinated action between foreign ministry headquarters and personnel abroad, and require cooperation with actors not normally involved in domestic emergencies. Managing distance in large-scale consular emergency responses encompasses more than physical and logistical distance. The challenge of assisting citizens whose emotions may be affected by the foreignness of the environment, or by feelings of connectedness despite the physical distance, necessitates a response that incorporates both pragmatism and compassion. Governments mounting large-scale responses also have to contend with the expectations of the citizenry, which often go beyond what governments are capable of delivering outside their national territories. Deconstructing large-scale consular emergency response into constituent challenges provides a framework in which to assess the responses. Large-scale consular emergencies test the limits of bureaucratic reach, highlight the relationship between the citizen and the state, and engage the political sphere with questions of how far a government should go to assist citizens. -- provided by Candidate.
External Electric Field Mediated Quantum Phase Transitions in One-Dimensional Charge Ordered Insulators: A DMRG Study
Creators: name: Dutta, Sudipta
name: Pati, Swapan K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform density matrix renormalization group (DMRG) calculations extensively on one-dimensional chains with on site (U) as well as nearest neighbour (V) Coulomb repulsions. The calculations are carried out in full parameter space with explicit inclusion of the static bias and we compare the nature of spin density wave (SDW) and charge density wave (CDW) insulators under the influence of external electric field. We find that, although the SDW (U>2V) and CDW (U<2V) insulators enter into a conducting state after a certain threshold bias, CDW insulators require much higher bias than the SDW insulators for insulator-metal transition at zero temperature. We also find the CDW-SDW phase transition on application of external electric field. The bias required for the transitions in both cases decreases with increase in system size.
description: 7 pages, 7 figures, accepted in J. Phys.: Condens. Matter
Inclusive photon production and photon-jet correlations in hadronic collisions
Creators: name: Szczurek, Antoni
name: Pietrycki, Tomasz
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for photon-jet correlations in $pp$ and $p \bar p$ collisions at RHIC, Tevatron and LHC energies. We discuss correlations in azimuthal angle between photon and jet as well as correlations in two-dimensional space of photon and jet transverse momenta. Different unintegrated gluon/parton distributions are used in the $k_t$-factorization approach. The results depend on UGDF/UPDF used. The collinear NLO $2 \to 3$ contributions dominate over $k_t$-factorization cross section at small relative azimuthal angles as well as for asymmetric transverse momentum configurations.
description: 6 pages, 7 figures a talk at the International Workshop PHOTON2007, Paris, Sorbonne France, July 9-13, 2007
Rapidity-dependent spectra from a single-freeze-out model of relativistic heavy-ion collisions
Creators: name: Biedron, Bartlomiej
name: Broniowski, Wojciech
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An extension of the single-freeze-out model with thermal and geometric parameters dependent on the spatial rapidity, $α_\parallel$, is used to describe the rapidity and transverse-momentum spectra of pions, kaons, protons, and antiprotons measured at RHIC at $\sqrt{s_{NN}}=200 {\rm GeV}$ by the BRAHMS collaboration. {\tt THERMINATOR} is used to perform the necessary simulation, which includes all resonance decays. The result of the fit to the rapidity spectra in the range of the BRAHMS data is the expected growth of the baryon and strange chemical potentials with the magnitude of $α_\parallel$, while the freeze-out temperature is kept fixed. The value of the baryon chemical potential at $α_\parallel \sim 3$, which is the relevant region for particles detected at the BRAHMS forward rapidity $y \sim 3$, is about $200 {\rm GeV}$, {\em i.e.} lies in the range of the values obtained for the highest SPS energy. The chosen geometry of the fireball has a decreasing transverse size as the magnitude of $α_\parallel$ is increased, which also corresponds to decreasing transverse flow. This feature is verified by reproducing the transverse momentum spectra of pions and kaons at various rapidities. The strange chemical potential obtained from the fit to the $K^+/K^-$ ratio is such that the local strangeness density in the fireball is compatible with zero. The resulting rapidity spectra of net protons are described qualitatively in the model. As a result of the study, the knowledge of the ``topography'' of the fireball is achieved, making other calculations possible. As an example, we give predictions for the rapidity spectra of hyperons.
description: 11 pages, 9 figures, better quality figures supplied
The RR Lyrae Delay-Time Distribution: A Novel Perspective on Models of Old Stellar Populations
Creators: name: Sarbadhicary, Sumit K.
name: Heiger, Mairead
name: Badenes, Carles
name: Mateu, Cecilia
name: Newman, Jeffrey
name: Ciardullo, Robin
name: Hallakoun, Na'ama
name: Maoz, Dan
name: Chomiuk, Laura
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The delay-time distribution (DTD) is the occurrence rate of a class of objects as a function of time after a hypothetical burst of star formation. DTDs are mainly used as a statistical test of stellar evolution scenarios for supernova progenitors, but they can be applied to many other classes of astronomical objects. We calculate the first DTD for RR Lyrae variables using 29,810 RR Lyrae from the OGLE-IV survey and a map of the stellar-age distribution (SAD) in the Large Magellanic Cloud (LMC). We find that $\sim 46\%$ of the OGLE-IV RR Lyrae are associated with delay-times older than 8 Gyr (main-sequence progenitor masses less than 1 M$_{\odot}$), and consistent with existing constraints on their ages, but surprisingly about $51\%$ of RR Lyrae appear have delay times $1.2-8$ Gyr (main-sequence masses between $1 - 2$ M$_{\odot}$ at LMC metallicity). This intermediate-age signal also persists outside the Bar-region where crowding is less of a concern, and we verified that without this signal, the spatial distribution of the OGLE-IV RR Lyrae is inconsistent with the SAD map of the LMC. Since an intermediate-age RR Lyrae channel is in tension with the lack of RR Lyrae in intermediate-age clusters (noting issues with small-number statistics), and the age-metallicity constraints of LMC stars, our DTD result possibly indicates that systematic uncertainties may still exist in SAD measurements of old-stellar populations, perhaps stemming from the construction methodology or the stellar evolution models used. We described tests to further investigate this issue.
description: 21 pages, 11 figures. Accepted to ApJ
Uncovering the fragility of large-scale engineering project networks
Creators: name: Santolini, Marc
name: Ellinas, Christos
name: Nicolaides, Christos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Engineering projects are notoriously hard to complete on-time, with project delays often theorised to propagate across interdependent activities. Here, we use a novel dataset consisting of activity networks from 14 diverse, large-scale engineering projects to uncover network properties that impact timely project completion. We provide the first empirical evidence of the infectious nature of activity deviations, where perturbations in the delivery of a single activity can impact up to 4 activities downstream, leading to large perturbation cascades. We further show that perturbation clustering significantly affects project overall delays. Finally, we find that poorly performing projects have their highest perturbations in high reach nodes, which can lead to largest cascades, while well performing projects have perturbations in low reach nodes, resulting in localised cascades. Altogether, these findings pave the way for a network-science framework that can materially enhance the delivery of large-scale engineering projects.
description: 13 pages, 3 figures, 7 supplementary figures
title: Νεότερα βιβλιογραφικά και κλινικοεργαστηριακά δεδομένα στα νεοπλασματικά νοσήματα του αναπνευστικού συστήματος
title: Latest bibliography and clinical laboratory data on respiratory diseases of the respiratory system
titleType: AlternativeTitle
Creators: name: Παντώτη, Αναστασια
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Νεοπλασίες
Ανώτερο αναπνευστικό σύστημα
Κατώτερο αναπνευστικό σύστημα
Καρκίνος του αναπνευστικού
Respiratory cancer

description: Στην παρακάτω εργασία αναφέρεται η σημαντικότητα του αναπνευστικού συστήματος και των λειτουργιών που παρέχει στον ανθρώπινο οργανισμό, αλλά το βασικό θέμα αφορά τις νεοπλασματικές νόσους που προσβάλλουν το σύστημα αυτό. Μελετώνται οι νεοπλασίες που εμφανίζει το αναπνευστικό σύστημα, τα επιδημιολογικά στοιχεία που επηρεάζουν και επηρεάζονται άμεσα από το περιβάλλον και τις συνήθειες του πολιτισμού της κάθε χώρας. Στη συνέχεια αναφέρονται και αναλύονται οι μέθοδοι διάγνωσης τους, παλιές και καινούριες και συγκρίνονται μεταξύ τους. Τέλος καταγράφονται οι πιο αξιόπιστες θεραπευτικές οδοί, στην συνέχεια οι νεότεροι τρόποι ίασης και καταπολέμησης των νεοπλασμάτων και επιπλέον γίνεται αναφορά σε κάποιες χρήσιμες κλινικές μελέτες που ακόμη είναι ενεργές.
Μακροχρόνιες τάσεις όζοντος και υπεριώδους ακτινοβολίας σε διάφορους ευρωπαϊκούς σταθμούς:
Creators: name: Νταΐδη, Αγγελική Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Οζον
Υπεριώδης ακτινοβολία
Τάσεις
Αιωρούμενα σωματίδια
Παράγοντας RAF
Γεωγραφικό πλάτος
Ozon
Ultraviolet radiation
Trends
Aerosols
RAf factor
Latitude

description: Οι βλαβερές συνέπειες της υπεριώδους ακτινοβολίας στους ανθρώπους και όχι μόνο οργανισμούς οδήγησε στην ανάγκη της μελέτης των επιπέδων της που φτάνουν στην επιφάνεια της Γης. Η ανάγκη έγινε ακόμα πιο έντονη μετά τις ενδείξεις ότι η αύξηση της ακτινοβολίας σχετίζεται με την μείωση των επιπέδων του όζοντος κατά τη διάρκεια των ετών 1992 και1993. Το αντικείμενο αυτής της εργασίας είναι η μελέτη των μακροχρόνιων τάσεων της ακτινοβολίας και του όζοντος. Παρουσιάζεται η σχετική θεωρία για τους τροποσφαιρικούς παράγοντες που επηρεάζουν την ακτινοβολία και στη συνέχεια γίνεται η ανάλυση των μετρήσεων σε σχέση με τα έτη, τους μήνες και το γεωγραφικό πλάτος. Γίνεται επίσης υπολογισμός των τάσεων της υπεριώδους ακτινοβολίας στα 305nm και 324nm, στις ζενίθιες γωνίες των 50ο και 60ο, υπό όλες τις συνθήκες καθώς και σε συνθήκες ανέφελου ουρανού για 15 χρόνια παρατηρήσεων (1990-2004), καθώς επίσης και των τάσεων του όζοντος για τις δυο αυτές ζενίθιες γωνίες και για την ίδια περίοδο.
description: The harmful effect of the ultraviolet radiation in the human organization and not only has turned to the need to study the levels of ultraviolet radiation that reaches the Earth’s surface. That need becomes bigger after the evidence of significant increases of solar radiation which associated with the ozone depletion during 1992 and 1993. The object of this research is the study of the long-term trends of ultraviolet radiation and ozone. It is presented the relative theory about atmospheric factors that influence ultraviolet radiation and then measurements were analyzed in relation to years, months and latitude.Moreover, it is made the calculation of the trends of the ultraviolet radiation in 305nm and 324nm, in zenith angle 50o and 60o under all skies and clear sky conditions for 15 years of observation (1990-2004). Finally, it is calculated the trends of ozone in the two zenith angle for the same period.
Ανάπτυξη συστήματος διαδραστικής δημιουργίας και διαχείρισης κινούμενης εικόνας και ήχου σε πραγματικό χρόνο, με χρήση εξειδικευμένης ενδυμασίας, (data suit) και αισθητήρων κίνησης:
Creators: name: Αλμπανάκης, Ευάγγελος Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Αλληλεπίδραση
Διαδραστικότητα, Διάδραση
Διαδραστικό περιβάλλον
Διαδραστική εγκατάσταση
Αισθητήρας λυγίσματος
Interaction, Interactive environment
Interactive performance, iInteractive Dance
Flex sensor, Bend sensor
Voltage-to-MIDI converter
MAX/MSP
Isadora

description: Αντικείμενο της εργασίας είναι η μελέτη, κατασκευή και παρουσίαση ενός διαδραστικού περιβάλλοντος που χρησιμοποιεί ένα πλήθος σύγχρονων τεχνολογιών για τον έλεγχο και τη δημιουργία οπτικοακουστικών συμβάντων σε πραγματικό χρόνο, ενταγμένων σε ένα ενιαίο σύνολο μιας διαδραστικής παράστασης. Το διαδραστικό περιβάλλον χρησιμοποιεί τεχνολογίες ηλεκτρονικών υπολογιστών, πρωτόκολλο MIDI, αισθητήρες, κάμερα εντοπισμού θέσης, βίντεο, surround ήχο και προγραμματισμό στα λογισμικά MAX/MSP, Isadora, Live. H διάδραση πραγματοποιείται ανάμεσα στο σύστημα και σε έναν χορευτή - χρήστη.
description: The object of this project is to study, construct and present an interactive environment using a large number of current technologies to create and control audiovisual events in real time displaying them in a continuous spectrum. The interactive environment is using computer technology, MIDI protocol, sensors, a position-tracking camera, video, surround sound and MAX/MSP, Isadora, Live programming. The interaction becomes possible through the system and a dancer – user.
A model for the very early Universe
Creators: name: Giacosa, Francesco
name: Hofmann, Ralf
name: Neubert, Matthias
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A model with N species of massless fermions interacting via (microscopic) gravitational torsion in de Sitter spacetime is investigated in the limit N->infinity. The U_V(N)*U_A(N) flavor symmetry is broken dynamically irrespective of the (positive) value of the induced four-fermion coupling. This model is equivalent to a theory with free but massive fermions fluctuating about the chiral condensate. When the fermions are integrated out in a way demonstrated long ago by Candelas and Raine, the associated gap equation together with the Friedmann equation predict that the Hubble parameter vanishes. Introducing a matter sector (subject to a finite gauge symmetry) as a source for subsequent cosmology, the neutral Goldstone field acquires mass by the chiral anomaly, resulting in a Planck-scale axion.
description: 14 pages, 2 figures; some references added; version to appear in JHEP
Η μετάβαση από την τελική νεολιθική στην πρώιμη εποχή του χαλκού στην Κεντρική Δυτική Μακεδονία και Θεσσαλία: η οργάνωση του χώρου
Creators: name: Ζαφειριάδης, Πασχάλης Σάββας
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Μετάβαση
Τελική νεολιθική
Πρώιμη εποχή του χαλκού
Κοινωνική αλλαγή
Κοινωνικές δομές
Οργάνωση του χώρου
Transition
Final neolithic
Earth bronze age
Social change
Social structures
Spatial organization

description: Στην παρούσα εργασία επιχειρείται μια προσπάθεια συζήτησης της μεταβατικής περιόδου από το τέλος της Νεολιθικής προς την Πρώιμη Εποχή του Χαλκού στις περιοχές της Μακεδονίας, Κεντρικής και Δυτικής, και της Θεσσαλίας. Η προσπάθεια βασισμένη στα υπάρχοντα δεδομένα, από θέσεις που διατηρούν κατάλοιπα και των δυο περιόδων, αναφέρεται σε παραδείγματα αρχιτεκτονικής και οργάνωσης του χώρου, σε κοινοτικό και διακοινοτικό επίπεδο, στοχεύοντας τόσο στην παράθεση και συγκέντρωση όλων των σχετικών στοιχείων, όσο και στην ένταξή τους στη γενικότερη συζήτηση που αφορά τις ήδη διατυπωμένες προτάσεις αναφορικά με πιθανές πολιτισμικές μεταβολές που πραγματοποιούνται με το ‹‹πέρασμα›› στην Εποχή του Χαλκού. ‹‹Φιλοδοξία›› της γενικότερης συζήτησης αποτελεί η διερεύνηση της σύμπλευσης ή της απόκλισης των ευρύτερων θεωριών που αναφέρονται σε πολιτισμικές μεταβολές στη διάρκεια της παραπάνω περιόδου σε σχέση με τα στοιχεία για την οργάνωση του χώρου, σε ενδοκοινοτικό και διακοινοτικό επίπεδο, που μας προσφέρουν οι συγκεκριμένες θέσεις των δυο περιοχών.
description: This work attempts a discussion of the transitional phase from the end of Neolithic to the Early Bronze Age in the regions of Macedonia, Central and Western, and Thessaly. The effort, based on existing data from sites that preserve remains of both periods, refer to examples of architecture and organization of space in intra-site and inter-site level, aiming both to the citing and concentration of all the relevant available information, as also in its integration into the general discussion regarding the already stated theories referring to possible cultural changes during the ‘Transition’ to the Bronze Age. ‘Ambition’ of the collective negotiation is to investigate the consistency or deviation of the broader theories that refer to cultural changes during the above period in comparison with the data on the organization of space in intra-site and inter-site level that we are endowed from the sites of the above regions.
Προβλήματα της πολυπολιτισμικής τάξης στην Κυπριακή Β'θμια εκπαίδευση: το θέμα της διδασκαλίας του μαθήματος της ιστορίας από το σχολικό εγχειρίδιο
Creators: name: Νικολάου, Νικόλαος Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Πολυπολιτισμικότητα
Ιστορία
Αντικρουόμενη ιστορία
Εθνος-ιστορία
Αμφιλεγόμενα σημεία τριβής
Πολυπρισματική μέθοδος
Multicultural
History
Controversial history
Nation-history
Controversial sensitive subjects
Multiperspectivity

description: Η διπλωματική εξετάζει τα προβλήματα που προκύπτουν σε μια πολυπολιτισμική αίθουσα διδασκαλίας ιστορίας, στην Β'θμια Κυπριακή εκπαίδευση. Εξετάζεται η εθνολογική σύνθεση, των εθνικά ετερόκλητων μαθητών και τα εγχειρίδια ιστορίας χωρών προέλευσης τους. Παρουσιάζονται επιστημονικοί τρόποι διδακτικής της ιστορίας σε πολυεθνική τάξη και γίνεται εξέταση εκπαιδευτικών συστημάτων και αναλυτικών προγραμμάτων χωρών με πολυεθνικές κοινωνίες. Ξεχωριστή αναφορά γίνεται στην προσέγγιση Ελληνοκυπρίων και Τουρκοκυπρίων. Η έρευνα πεδίου στοχεύει στην επισήμανση σημείων τριβής στα εγχειρίδια ανάμεσα σε μαθητές που αποτελούν πολυπολιτισμικό ακροατήριο.
description: This thesis examines problems of a multicultural teaching class of a secondary Cyprus school. The ethnological synthesis of foreigner students is examined together with their history books of their country of origin. Scientific ways of history teaching in a multi-cultural class are presented and educational systems and national curriculums in countries with multicultural societies are studied. The approach between Greek-Cypriots and Turkish-Cypriots throught history is separately mentioned. The case study aims to identify controversial sensitive issues between history books (Greek and Cypriot books) that are taught to students in multicultural audiences.
What are the personal and cultural criteria of Indo-Canadian women in deciding to seek counselling help?
Creators: name: McLellan, Marla
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to explore the decision-making process of Indo-Canadian women in seeking counselling help. Little research regarding help-seeking behaviours and attitudes of minority groups has been done in the area of counselling psychology. Even less attention has been given to the Indo-Canadian community. The aim of this study was to contribute to existing research through a contextual understanding of the influences on an Indo-Canadian woman whe/n faced with the decision to pursue counselling help. It was further intended to provide mental health services with information on ways of encouraging this cultural group to utilize the available help resources. This study used narrative and multiple case study methodology. Seven Indo-Canadian women, all having previously used mental health services, were interviewed. Interviews were then transcribed, and 'straightened' into individual narratives based on the unique story of each participant. Factors of hindrance and facilitation with regard to help-seeking were extracted from the narratives and then analyzed for commonalities. The transcripts and narratives were validated by an external examiner to ensure freedom from distortion and bias. Five of the seven stories along with the factors of hindrance and facilitation were further validated by the respective participants. In addition, an abstract story was constructed from the individual accounts. Findings extended the research through the identification of facilitating factors in the decision-making process of Indo-Canadian women in seeking counselling.
Evaluation of Road Weather Information System
Creators: name: Weber, Joel M.
name: Graves, R. Clark
name: Pigman, Jerry G.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1999
Subjects: subject: Transportation Engineering

description: The objectives of this study were to monitor and evaluate the Kentucky Transportation Cabinet's Road Weather Information System (RWIS). Six systems were installed and all became operational in November 1997. Each site includes sensors which measure temperature, precipitation, relative humidity, wind speed, pavement temperature, surface condition, and chemical concentration. The data can be accessed remotely using a Windows-based software program. The data are also stored in a central database for future use. The accuracy of the system was evaluated through comparison of atmospheric data with airport data and through site observations of surface condition, pavement temperature, and air temperature. The reliability was evaluated by reviewing the history log files to locate gaps in the data. Problems with individual sensors were also documented. The accuracy of the system was found to be good for the sensors that could be directly evaluated. The reliability was satisfactory with the larger gaps in data being caused by delays in detecting minor problems. Maintenance. of the system was a problem during the evaluation period. Additional installations of RWIS are not recommended until a more formalized process is developed by the Kentucky Transportation Cabinet for use of the data in management of winter weather events.
title: Truck Route Access Evaluation
title: Dravo Lime Company, Maysville, Site #30
titleType: Subtitle
Creators: name: Weber, Joel M.
name: Agent, Kenneth R.
name: Aldridge, Brian
name: Aultman-Hall, Lisa
name: Cain, David
name: Stamatiadis, Nikiforos
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1999
Subjects: subject: Transportation Engineering

description: This is a study undertaken by the Kentucky Transportation Center on behalf of the Kentucky Transportation Cabinet ( KYTC). There are two main objectives of the Freight Movement and Intermodal Access in Kentucky Study (SPR 98-189): evaluation of the access for trucks between intermodal or other truck generating sites and the National Highway System (NHS); and furthering the understanding of freight commodity flows throughout the state. This report summarizes the access evaluation for the Dravo Lime Company facility located in Mason County in the Buffalo Trace Area Development District (ADD) and KYTC Highway District #9. The location of the site is shown in Figure 1. Work on other specific sites as well as the freight commodity flow task is ongoing and documented elsewhere.  The sites to be evaluated in this study were selected from two existing databases (a truck facility survey from 1994 and the intermodal facility inventory) based on ADD and KYTC Highway District planner recommendations, geographic location, distance to the NHS, and the number of trucks accessing the site. Consideration was also made for the freight type handled and transportation modes used.  The site was visited for video recording and data collection on November 11, 1998. The facility is located on Springdale Road east of KY 10. The surrounding area is generally rural. A phone survey was conducted with facility managers early in the study process. The survey found that approximately 50 trucks per day normally access the site with significantly higher numbers in the summer. The trucks are generally tri-axle single units or semi trailers with a maximum length of 48 feet. The freight handled at this facility is primarily limestone. The only problem mentioned in the survey was traffic at the intersection of Springdale Road and KY 10. The phone survey information can be found in Appendix A.
A technical analog of the cosmological constant problem and a solution thereof
Creators: name: Kourkoulou, Ioanna
name: Nicolis, Alberto
name: Sun, Guanhao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The near vanishing of the cosmological constant is one of the most puzzling open problems in theoretical physics. We consider a system, the so-called framid, that features a technically similar problem. Its stress-energy tensor has a Lorentz-invariant expectation value on the ground state, yet there are no standard, symmetry-based selection rules enforcing this, since the ground state spontaneously breaks boosts. We verify the Lorentz invariance of the expectation value in question with explicit one-loop computations. These, however, yield the expected result only thanks to highly nontrivial cancellations, which are quite mysterious from the low-energy effective theory viewpoint.
description: 28 pages
Hyperspectral vision methods for automatic recognition of emergency plant pests
Creators: name: Khuwuthyakorn, Pattaraporn
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: TA1634.K58 2012
subject: Image processing Digital techniques
subject: Computer vision
subject: Machine learning

description: The objective of this research work is to develop the computational techniques in computer vision and machine learning to detect and identify Emergency Plant Pests (EPPs) in hyperspectral images and the ability to apply in a real-time basis for the plant biosecurity surveillance application. There are three problems that will be addressed regarding hyperspectral imagery classification for EPPs; feature extraction, object detection and classification problems. Therefore, the development of computational methods for the three problems have been proposed. The first one, extraction of descriptive features, is to relate EPPs to their spectral imaging representations as necessary for representing information of the pest for reliable classification. This involves the development of texture based image descriptors that are both, invariant to changes in the viewing conditions and robust to in-field conditions. The second one is the object detection related problem in hyperspectral images. For any development of automatic surveillance systems, rapid object detection is one of essentials for success. The proposed method rapidly finds potential areas of locations of suspected objects and operates effectively on large-scale clustering and high dimensionality problems like the hyperspectral data. The last major problem of the research is to develop a classification method appropriate for the application. The method requires the capability to operate under a real-time setting with desirable discrimination performance for satisfying with a high margin of confidence. The development of these methods is further explained based on mathematic formulations. The experimental results show the utility and performance of the proposed methods. Finally, an attempt of further investigation of possible applications for these computational techniques has been carried out. -- provided by Candidate.
On the evolution of compact binary black holes
Creators: name: Adamian, G. G.
name: Antonenko, N. V.
name: Lenske, H.
name: Sargsyan, V. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based on the consideration of potential energy of the di-black-hole as a function of mass asymmetry (transfer) collective coordinate, the possibility of matter transfer between the black holes in a binary system is investigated. The sensitivity of the calculated results is studied to the value of the total mass of binary system. The conditions for the merger of two black holes are analyzed in the context of gravitational wave emission.
description: 9 pages, 2 figures
The power of AQFT: the area law for entropy of localized quantum matter
Creators: name: Schroer, Bert
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The algebraic approach to QFT, which for several decades has enriched QFT with structural theorems, has recently shown its utility in various constructions of actual interest. In these lecture notes I explain how AQFT (in particular the modular theory of operator algebras) implies paradigmatic conceptual and mathematical changes while fully preserving the physical principles which underly QFT. As an illustration of actual interest I use holography on null-surfaces and the ensuing area law for entropy of localized matter in the vacuum state.
description: 18 pages, submitted contribution to Fifth International Conference on Mathematical Methods in Physics April 2006, Rio de Janeiro, various improvements and additions
High resolution CO observations towards the Bright Eastern Knot of the SNR Puppis A
Creators: name: Paron, S.
name: Dubner, G.
name: Reynoso, E.
name: Rubio, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper reports molecular observations towards the Bright Eastern Knot (BEK) in the SNR Puppis A, a feature where radio and X-ray studies suggest that the shock front is interacting with a dense molecular clump. We performed high-resolution millimetric observations towards the BEK of Puppis A using the SEST telescope in the 12CO J=1-0 and 2-1 lines (beams of 45" and 23" respectively). More extended, lower angular resolution 12CO J=1-0 observations taken from NANTEN archival data were also analyzed to obtain a complete picture. In the velocity range near 16 km/s, the Puppis A systemic velocity, our study revealed two important properties: (i) no dense molecular gas is detected immediately adjacent to the eastern border of the BEK and (ii) the molecular clump detected very close to the radiocontinuum maximum is probably located in the foreground along the line of sight and has not yet been reached by the SNR shock front. We propose two possible scenarios to explain the absence of molecular emission eastwards of the BEK border of Puppis A. Either the shock front has completely engulfed and destroyed a molecular clump or the shock front is interacting with part of a larger cloud and we do not detect CO emission immediately beyond it because the molecules have been dissociated by photodissociation and by reactions with photoionized material due to the radiative precursor.
description: 10 pages, 7 figures. Accepted for publication in A&A
Ο Ν.2472/1997 περί προστασίας των προσωπικών δεδομένων και η επεξεργασία δεδομένων οικονομικής συμπεριφοράς από την «Τειρεσίας α.ε.»:
Creators: name: Κωτούλα, Βασιλική Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Προστασία δεδομένων
Επεξεργασία δεδομένων
Τειρεσίας α.ε.
Δεδομένα οικονομικής συμπεριφοράς
Data protection
Processing of data
Teiresias s.a.
Economic data

description: Η εν λόγω εργασία πραγματεύεται το ζήτημα της προστασίας των προσωπικών δεδομένων κατά το Ν.2472/1997 αναφορικά με την επεξεργασία των δεδομένων οικονομικής συμπεριφοράς των υποκειμένων από την "Τειρεσίας α.ε".Αρχικά, δίνονται οι ορισμοί των βασικών εννοιών που αναφέρονται στο νόμο.Εν συνεχεία, αναλύεται η διαδικασία της επεξεργασίας των οικονομικών δεδομένων από την Τειρεσίας α.ε.Αναφορικά με την νομιμότητα της επεξεργασίας παρουσιάζεται το σύνολο των ουσιαστικών και τυπικών προϋποθέσεων αλλά και οι αρχές που πρέπει να διέπουν κάθε επεξεργασία δεδομένων.Ακολουθεί η ανάλυση των δικαιωμάτων που έχει και μπορεί να ασκήσει το υποκείμενο των δεδομένων.Τέλος,περιγράφονται οι διοικητικές, ποινικές και αστικές κυρώσεις που προβλέπονται από το Ν.2472/1997 και τις σχετικές διατάξεις του Αστικού Κώδικα σε περίπτωση παραβίασης της νομοθεσίας περί προσωπικών δεδομένων από τον υπεύθυνο της επεξεργασίας.
description: This dissertation deals with the issue of protection of personal data according to Law 2472/1997 related to the protection of economic nature’s data for data subjects by Teiresias s.a. Initially, they are given definitions of fundamental concepts referred in the aforementioned law. Moreover, the process of treatment of economic data by Teiresias s.a. is analysed. Regarding the lawfulness of processing, it is presented the substantial and formal requirements as well as the principles that should govern the processing of data. It follows the analysis of rights that data subjects possess and are able to exercise. Finally, they are described the administrative, penal and civil sanctions, included in the Law 2472/1997 and the relevant provisions of the Civil Code, in case of breach of the personal data law by the controller.
Invariant tensors and graphs
Creators: name: Markl, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We describe a correspondence between GL_n-invariant tensors and graphs, and show how this correspondence accomodates various types of symmetries and orientations.
description: 15 pages, references added
New Solutions for Rotating Boson Stars
Creators: name: Kling, Felix
name: Rajaraman, Arvind
name: Rivera, Freida Liz
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been shown that scalar fields can form gravitationally bound compact objects called boson stars. In this study, we analyze boson star configurations where the scalar fields contain a small amount of angular momentum and find two new classes of solutions. In the first case all particles are in the same slowly rotating state and in the second case the majority of particles are in the non-rotating ground state and a small number of particles are in an excited rotating state. In both cases, we solve the underlying Gross-Pitaevskii-Poisson equations that describe the profile of these compact objects both numerically as well as analytically through series expansions.
description: 9 pages, 2 figures
Copy of Letter from W.J. Coe to E. Davis, March 4, 1942
Creators: name: Coe, Walter J.
Publisher: name: The University of British Columbia
Year: 2017

description: Copy of a letter sent by W.J. Coe of the Winfield and Okanagan Centre Irrigation District, to E. Davis, Comptroller of Water Rights at the Water Rights Branch, dated March 4, 1942, regarding settlement of account.
From an insulating to a superfluid pair-bond liquid
Creators: name: Cuoco, Mario
name: Ranninger, Julius
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study an exchange coupled system of itinerant electrons and localized fermion pairs resulting in a resonant pairing formation. This system inherently contains resonating fermion pairs on bonds which lead to a superconducting phase provided that long range phase coherence between their constituents can be established. The prerequisite is that the resonating fermion pairs can become itinerant. This is rendered possible through the emergence of two kinds of bond-fermions: individual and composite fermions made of one individual electron attached to a bound pair on a bond. If the strength of the exchange coupling exceeds a certain value, the superconducting ground state undergoes a quantum phase transition into an insulating pair-bond liquid state. The gap of the superfluid phase thereby goes over continuously into a charge gap of the insulator. The change-over from the superconducting to the insulating phase is accompanied by a corresponding qualitative modification of the dispersion of the two kinds of fermionic excitations. Using a bond operator formalism, we derive the phase diagram of such a scenario together with the elementary excitations characterizing the various phases as a function of the exchange coupling and the temperature.
description: 10 pages, 5 figures
What is the meaning of disengagement as lived by students who left school without graduating
Creators: name: Loncaric, Mladen A
Publisher: name: University of British Columbia
Year: 2009

description: This study was designed to explore the meaning of disengagement from school as experienced by those who left school before graduating. Data for the study was gathered using an unstructured interview format. The research produced authentic narrative accounts of the meaning of disengagement for the individual participants. A cross case comparison of these narratives indicated the presence of three common streams of movement. As children, each of the participants were involved in an escalating cumulation of problems which over time, increased in scope and intensity. Their personal vulnerabilities generated through a troubled background, when coupled with the more complex demands of the secondary system, translated into an increased school maladjustment. The third movement involved a crystallizing of previous experiences and attitudes and an engulfment in a spoiled identity. The stories collected indicated that a comprehensive theory of disengagement must be built on a holistic perspective. Beyond the events, experiences, and circumstances that contribute to a disengagement process, questions of individual interpretation and meaning must also be considered. Finally, the thesis raises questions about the relationship of school practices and dropout experiences.