cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Μελέτη των δομικών ιδιοτήτων 3C-SiC καταλλήλου για ημιαγωγικές διατάξεις
Creators: name: Μάντζαρη, Αλκυόνη Β.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Διεπιφάνειες αναστροφής
Ασθενείς τρόποι δόνησης φωνονίων στο υπέρυθρο
Inversion domain boundaries(IDBS)
Weak phonon modes in infrared

description: Το θέμα το οποίο πραγματεύεται η παρούσα διδακτορική διατριβή, είναι ο δομικός χαρακτηρισμός υμενίων ανθρακοπυριτίου (silicon carbide-SiC) με την τεχνική της Ηλεκτρονικής Μικροσκοπίας Διέλευσης. Παράλληλα χρησιμοποιήθηκε ως συμπληρωματική μέθοδος η Φασματοσκοπία Υπερύθρου για τον οπτικό χαρακτηρισμό των δειγμάτων και την αναγνώριση των πολυτύπων στα πολυκρυσταλλικά δείγματα. Τα παχιά υμένια αναπτύχθηκαν με διάφορες τεχνικές όπως είναι η εξάχνωση, η φυσική μεταφορά ατμών, η φυσική μεταφορά ατμών με συνεχή τροφοδότηση και η μέθοδος μετακινούμενου θερμαντήρα, ενώ για την επιταξιακή ανάπτυξη επιστρωμάτων κυβικού SiC (3C-SiC) πάνω σε αυτοϋποστηριζόμενα δισκία 3C-SiC της εταιρείας Hoya, χρησιμοποιήθηκε η χημική εναπόθεση ατμών. Κύριος στόχος της παρούσας εργασίας, είναι η λεπτομερής παρατήρηση και μελέτη των δομικών χαρακτηριστικών των αναπτυσσόμενων υμενίων, ώστε να φανεί η σχέση που εμφανίζουν οι δομικές ατέλειες με τις χρησιμοποιηθείσες τεχνικές
description: The study reported in this thesis is related to the structural characterization of silicon carbide (SiC) crystals by Transmission Electron Microscopy. Fourier Transform Infrared Reflectivity was also employed as a complementary technique for the optical characterization of the samples and the identification of polytypes in the polycrystalline samples. Thick films were grown by different techniques such as sublimation, physical vapor transport, continuous feed physical vapor transport and the traveling heater method. The epitaxial growth of cubic SiC (3C-SiC) epilayers on free standing 3C-SiC wafers by Hoya was performed by chemical vapor deposition. The aim of this thesis is to define the structural characteristics of the grown films via detailed observation and study in such a way that they can be correlated with the used growth techniques
Ambivalence over emotional expression and health : process and trait effects
Creators: name: Katz, Ilana M.
Publisher: name: University of British Columbia
Year: 2011

description: Although the expression of emotion has traditionally been considered necessary and beneficial, research suggests that while some people need to express their emotions and benefit from such expression, others experience emotional expression as distinctly distressing. Pennebaker and his colleagues (Pennebaker & Hoover, 1986; Pennebaker & Klihr Beall, 1986) proposed a framework to reconcile the "healthy vs unhealthy" debate in the expressiveness literature. The key construct in this approach is "conflict" or ambivalence over emotional expression. King and Emmons (1990) recently adopted a trait conception of ambivalence over emotional expression, with an underlying premise that there are certain individuals who regularly experience conflict over their desires to express their feelings. The present investigation examined the relation between ambivalence over emotional expression and measures of psychological and physical well-being at both the between-subject and within-subject level. Analyses were also conducted taking into account the influence of life stress on the ambivalence/health relation. Trait Ambivalence over Emotional Expression (AEQ; King & Emmons, 1990) was examined in a 4-month longitudinal design with an interim diary component. Sixty-six subjects, pretest on AEQ, completed aggregated measures of life events and well-being at Time 1 and 2. They also kept a 2-week diary recording stressful events, emotional expression, ambivalence over expression, health symptoms and mood. At the between-subject level, trait ambivalence was predictive of psychological well-being and also moderated the relation between positive stressful events and psychological well-being. At the within-subject level, feelings of ambivalence were associated with increased negative affect and reports of more stressful events. While the ambivalence results did support the stress-buffering hypothesis at the between-subject level, they were not shown at the within-subject level.
The Est-hetics of Esthetics: Pedagogy as a Science of Life
Creators: name: Tognon, Giuseppe
Publisher: name: Studi sulla Formazione
Year: 2015

description: The Est-hetics of educating is not a new “special field” in philosophy, but an attempt to move away from the pedagogic experience of art towards a philosophy of experience that surpasses the limitations of a paideia entirely centred on the tenet of what man ought to be. The study of the concept of beauty, from the kalokagatia of the ancient Greeks, to the crisis of esthetic formalism in the 20th century, help us to understand that, to make pedagogy a science of life, it is necessary to move away from the discon- nect between form and content and think again about the dialectic between critical thinking and that awareness of reality and beauty which is as much a part of our daily life as breathing.
description: Studi sulla Formazione, Anno XVII, 2-2014
Electronic thermal transport in strongly correlated multilayered nanostructures
Creators: name: Freericks, J. K.
name: Zlatic, V.
name: Shvaika, A. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The formalism for a linear-response many-body treatment of the electronic contributions to thermal transport is developed for multilayered nanostructures. By properly determining the local heat-current operator, it is possible to show that the Jonson-Mahan theorem for the bulk can be extended to inhomogeneous problems, so the various thermal-transport coefficient integrands are related by powers of frequency (including all effects of vertex corrections when appropriate). We illustrate how to use this formalism by showing how it applies to measurements of the Peltier effect, the Seebeck effect, and the thermal conductance.
description: 17 pages, 4 figures, submitted to Phys. Rev. B
Διασπορά και γενετική ανάλυση των ιών της κροτωγενούς εγκεφαλίτιδας σε κρότωνες της Βόρειας Ελλάδας
Creators: name: Παυλίδου, Βασιλική Θ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Φλαβιιός
Οροθετικότητα
Flavivirus
Seroprevalence

description: Σκοπός της μελέτης ήταν η ανίχνευση ιών του συμπλέγματος ΤΒΕ σε κρότωνες νομών της Β. Ελλάδας, ώστε να γίνει εκτίμηση της συχνότητας μόλυνσης των κροτώνων με ιούς ΤΒΕ, προσδιορισμός των ενδημικών εστιών του ιού, γενετικός χαρακτηρισμός των στελεχών των ιών ΤΒΕ, καθώς και φυλογενετική ανάλυση και συσχέτιση των ελληνικών στελεχών του ιού με αυτά που ενδημούν παγκοσμίως. Επιπλέον, πραγματοποιήθηκε ορολογική επιδημιολογική έρευνα, για τον καθορισμό του ποσοστού οροθετικότητας έναντι του ιού. Επίσης, επιχειρήθηκε η απομόνωση και ο γενετικός χαρακτηρισμός ιών ΤΒΕ από κλινικά περιστατικά με λοίμωξη του ΚΝΣ. Εφαρμόστηκαν ορολογικές(έμμεσος ανοσοφθορισμός και ELISA) για την ανίχνευση ειδικών αντισωμάτων και μοριακές μέθοδοι (RT-PCR και αλληλούχιση νουκλεοτιδίων), καθώς και μέθοδοι απομόνωσης ιού σε κυτταροκαλλιέργειες. Οπως προέκυψε στην Ελλάδα μικρό ποσοστό κροτώνων του είδους Ixodes ricinus φέρνει τον ιό της Εγκεφαλίτιδας της ελληνικής αιγός. 2,06% του πληθυσμού της Β. Ελλάδας φέρει IgG αντισώματα έναντι του ΤΒΕ, πιθανώς οφειλόμενα σε διασταυρούμενες αντιδράσεις με τον ιό GGE. Ο ιός GGE διαφέρει γενετικά κατά 16-20% από τα υπόλοιπα στελέχη ιών ΤΒΕ και συνιστά μαζί με τον συγγενικό του ιό TSE ένα νέο, τέταρτο υπότυπο των ιών ΤΒΕ. Το μικρό ποσοστό μολυσμένων κροτώνων σε συνδυασμό με την απουσία κλινικών περιστατικών δείχνει ότι η κροτωγενής εγκεφαλίτιδα δεν ενδημεί στην Ελλάδα
description: Aim of the study was the detection of TBE serocomplex viruses in ticks collected from prefectures of Nothern Greece so as to estimate their infection rate with TBE viruses, the determination of endemic Foci of the virus, the genetic characterization of TBE strains ans the phylogenetic analysis and comparison of greek TBE virus strains with those present in other countries. In addition, there was conducted a seroepidemiological survey in order to determine the seropositivity rate against TBE virus of healthy population living in Northern and Western Greece, aiming to map the TBE endemic Foci. The detection and the genetic characterization of TBE viruses from clinical cases with CNS infection were also attempted. Serological(indirect immunofluorescence and ELISA) for the detection of specific antibodies and molecular methods(RT-PRC and DNA sequencing), as well as virus isolation cell cultures methods were performed. As it seems, in Greece a small proportion of Northern Greece have IgG antibodies against TBE virus, probably due to cross reaction with the GGE virus. The GGE virus differs genetically about 16-20% from other TBE strains and forms together with its genetically close TSE virus a new forth subtype of TBE viruses. The low infection rate of ticks in combination with the absence of clinical TBE cases shows that tick-borne encephalitis is not endemic in Greece
Il sistema delle orchestre e dei cori giovanili di Abreu nel contesto occidentale. Un tentativo di dare significato pedagogico al trapianto dell’esperienza venezuelana
Creators: name: Branca, Daniele
Publisher: name: Studi sulla Formazione
Year: 2015

description: The System of Children and Youth Choirs and Orchestras founded forty years ago by Josè Antonio Abreu in Venezuela, has become a significant alternative to the social ills faced by children and young people of the most disadvantaged neighborhoods of the South American metropolis, not only drugs and crime, but also the nihilistic logic that lacks all hope. It makes sense to transfer this experience in the wealthy West where the discomfort takes different forms? The answer is positive: music made together is ideal for sharing basic social values, construction of meaning and important experiences. The group is a perfect example of positive interdependence, commitment and responsibility, emblem of the community, micro-ideal society. Tolerance, inclusion, shared goals: values that can be a solution as well for our ills (bullying, eating disorders, depression, immaturity, inability to decision and commitment, dependence on families etc.). The System of Abreu is the credible alternative to the traditional way of teaching music, cold and elitist, and it stresses the importance of teachers in their role of great responsibility, both pedagogical and psychological.
description: Studi sulla Formazione, Anno XVII, 2-2014
Colti in trappola. L’università postfordista e la formazione del cognitariato
Creators: name: Burgio, Giuseppe
Publisher: name: Studi sulla Formazione
Year: 2015

description: In post-Fordism has now emerged the figure of cognitive workers, who work through communication, symbols and the relationship. Among these should be placed also precarious intellectual workers, that the article fits into the theorist landscape of Italian post-operaism. The analysis deals with the plan of social building and education of precarious cognitive workers. In this perspec-tive, the precarious researchers of Italian universities (PhDs, PostDocs, tem-porary teachers etc.) appear to play a central role because they exploit themself and simultaneously educate cognitive workers of postfordism into submission and obedience. To this aim seems to tend the process of restructuring of the university system.
description: Studi sulla Formazione, Anno XVII, 2-2014
Axisymmetric stationary solutions with arbitrary multipole moments
Creators: name: Bäckdahl, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, the problem of finding an axisymmetric stationary spacetime from a specified set of multipole moments, is studied. The condition on the multipole moments, for existence of a solution, is formulated as a convergence condition on a power series formed from the multipole moments. The methods in this paper can also be used to give approximate solutions to any order as well as estimates on each term of the resulting power series.
description: 12 pages
Hydrodynamics beyond Navier-Stokes: Exact solution to the lattice Boltzmann hierarchy
Creators: name: Ansumali, S.
name: Karlin, I. V.
name: Arcidiacono, S.
name: Abbas, A.
name: Prasianakis, N. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Exact solution to the hierarchy of nonlinear lattice Boltzmann (LB) kinetic equations in the stationary planar Couette flow is found at non-vanishing Knudsen numbers. A new method of solving LB kinetic equations which combines the method of moments with boundary conditions for populations enables to derive closed-form solutions for all higher-order moments. Convergence of results suggests that the LB hierarchy with larger velocity sets is the novel way to approximate kinetic theory.
description: 12 pages, 4 figures, to appear in PRL. Published version is shortened to meet the page limit
The fidelity of general bosonic channels with pure state input
Creators: name: Zhao, Meisheng
name: Qin, Tao
name: Zhang, Yongde
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We first derive for the general form of the fidelity for various bosonic channels. Thereby we give the fidelity of different quantum bosonic channel, possibly with product input and entangled input respectively, as examples. The properties of the fidelity are carefully examined.
description: 3 pages, comments welcome
Quantum Metamagnetic Transitions Induced by Changes in Fermi-Surface Topology -Applications to a Weak Itinerant-Electron Ferromagnet;ZrZn_2
Creators: name: Yamaji, Youhei
name: Misawa, Takahiro
name: Imada, Masatoshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We clarify that metamagnetic transitions in three dimensions show unusual properties as quantum phase transitions if they are accompanied by changes in Fermi-surface topology. An unconventional universality deeply affected by the topological nature of Lifshitz-type transitions emerges around the marginal quantum critical point (MQCP). Here the MQCP is defined by the meeting point of the finite temperature critical line and a quantum critical line running on the zero temperature plane. The MQCP offers a marked contrast with the Ising universality and the gas-liquid-type criticality satisfied for conventional metamagnetic transitions. At the MQCP, the inverse magnetic susceptibility chi^-1 has diverging slope as a function of the magnetization m (namely, | d chi^-1/d m | -> infty) in one side of the transition, which should not occur in any conventional quantum critical phenomena. The exponent of the divergence can be estimated even at finite temperatures. We propose that such an unconventional universality indeed accounts for the metamagnetic transition in ZrZn_2.
description: 5pages,4figures
Φθορά κινητού ένθετου πολυαιθυλενίου σε ολική αρθροπλαστική γόνατος: κλινική και πειραματική μελέτη
Creators: name: Νικολαϊδης, Αναστάσιος Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Φθορά
Ανώτερη αρθρική επιφάνεια
Οπίσθια επιφάνεια
Rotaglide
Wear

description: Μελετήθηκε η φθορά μετά από πειραματική και κλινική χρήση κινητών ενθέτων πολυαιθυλενίου Rotaglide. Στους 5 μεγάκυκλους και στο ίδιο σύστημα εξομοίωσης της κίνησης, τα κινητά ένθετα εμφάνισαν έως και τέσσερις φορές μικρότερη φθορά απ' ότι τα σταθερά ένθετα της ενδοπρόθεσης ΙΒ. Μελετήθηκαν επίσης 26 κινητά ένθετα Rotaglide, που αφαιρέθηκαν από ασθενείς μετά από μέση διάρκεια λειτουργίας in vivo 8 ετών (3 μήνες - 15.6 έτη). Μέτρια και σημαντική φθορά της ανώτερης αρθρικής επιφάνειας παρατηρείται σε ένθετα με διάρκεια λειτουργίας πάνω από 9.5 έτη και αφορά στη συντριπτική τους πλειοψηφία ένθετα πάχους 7mm και 9.5mm. Στο 51%-85% της συνολικής ανώτερης αρθρικής επιφάνειας αυτών των ενθέτων, η μορφή της φθοράς είναι κυρίως τύπου αποφυλλιδοποίησης (delamination) και σε μικρότερο ποσοστό παραμόρφωτική ή δίκην κρατήρα (pitting). Μικρή φθορά εμφανίζεται μετά τα 5.5 έτη και είναι κυρίως τύπου εκδορών και στιλβωματική. H φθορά εντοπίζεται κυρίως στους οπίσθιους κονδύλους, ενώ στα λεπτά ένθετα συνυπάρχει θραύση κάταγμα με απώλεια υλικού. Σε όλα τα ένθετα, ανεξαρτήτως πάχους, δεν υπάρχει σημαντική φθορά στην οπίσθια επιφάνεια (backside wear), εκτός από τις περιοχές εκείνες που συνυπάρχει θραύση του οπισθίου κονδύλου. Στο 18% της συνολικής οπίσθιας επιφάνειας δεν παρατηρήθηκε καθόλου φθορά, στο 42% επικρατούν οι εκδορές με κατά τόπους περιοχές στιλβωμάτωσης, ενώ στο υπόλοιπο 40% επικρατεί ο συνδυασμός φθοράς τύπου «δίκην κρατήρα» μέσα σε περιοχές στιλβωμάτωσης
description: We studied the wear of the Rotaglide mobile polyethylene bearings following experimental and clinical use. At 5 million cycles and with the same simulation system, the mobile bearings exhibited up to four times less wear than the fixed IB inserts, which were tested at the same time. We also studied 26 retrieved Rotaglide inserts with 8 years (3 months to 15.6 years) mean period of use. The 7mm and 9.5 mm of thickness inserts, showed moderate to severe wear after 9.5 years. In 51-85% of the upper surface, delamination dominates, but plastic deformation and pitting to a much lesser extend are also present. Little wear of burnishing type and abrasions, develop after 5.5 years mainly in the posterior condyles and in the thin inserts is accompanied by fracture and loss of material. In all bearings, regardless of thickness there is no significant backside wear. 18% of the backside surface had no wear, 42% showed some abrasions and scattered areas of burnishing and the remaining 40% is dominated by pitting inside areas of burnishing
Homogeneous Lagrangian submanifolds
Creators: name: Bedulli, Lucio
name: Gori, Anna
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 32J27; 53D20

description: We characterize isometric actions on compact Kaehler manifolds admitting a Lagrangian orbit, describing under which condition the Lagrangian orbit is unique. We furthermore give the complete classification of simple groups acting on the complex projective space with a Lagrangian orbit, and we give the explicit list of these orbits.
description: 17 pages. Minor modifications have been made: Proposition 5 is now correctly quoted, Corollary 2 and 3 are added
Machine Learning in Precision Medicine to Preserve Privacy via Encryption
Creators: name: Briguglio, William
name: Moghaddam, Parisa
name: Yousef, Waleed A.
name: Traore, Issa
name: Mamun, Mohammad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Precision medicine is an emerging approach for disease treatment and prevention that delivers personalized care to individual patients by considering their genetic makeups, medical histories, environments, and lifestyles. Despite the rapid advancement of precision medicine and its considerable promise, several underlying technological challenges remain unsolved. One such challenge of great importance is the security and privacy of precision health-related data, such as genomic data and electronic health records, which stifle collaboration and hamper the full potential of machine-learning (ML) algorithms. To preserve data privacy while providing ML solutions, this article makes three contributions. First, we propose a generic machine learning with encryption (MLE) framework, which we used to build an ML model that predicts cancer from one of the most recent comprehensive genomics datasets in the field. Second, our framework's prediction accuracy is slightly higher than that of the most recent studies conducted on the same dataset, yet it maintains the privacy of the patients' genomic data. Third, to facilitate the validation, reproduction, and extension of this work, we provide an open-source repository that contains the design and implementation of the framework, all the ML experiments and code, and the final predictive model deployed to a free cloud service.
Machine learning for excitation energy transfer dynamics
Creators: name: Naicker, Kimara
name: Sinayskiy, Ilya
name: Petruccione, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A well-known approach to describe the dynamics of an open quantum system is to compute the master equation evolving the reduced density matrix of the system. This approach plays an important role in describing excitation transfer through photosynthetic light harvesting complexes (LHCs). The hierarchical equations of motion (HEOM) was adapted by Ishizaki and Fleming (J. Chem. Phys., 2009) to simulate open quantum dynamics in the biological regime. We generate a set of time dependent observables that depict the coherent propagation of electronic excitations through the LHCs by solving the HEOM. We solve the inverse problem using classical machine learning (ML) models as this is a computationally intractable problem. The objective here is to determine whether a trained ML model can perform Hamiltonian tomography by using the time dependence of the observables as inputs. We demonstrate the capability of convolutional neural networks to tackle this research problem. The models developed here can predict Hamiltonian parameters such as excited state energies and inter-site couplings of a system up to 99.28\% accuracy and mean-squared error as low as 0.65.
description: 9 pages, 4 figures
Total cross-section at LHC from minijets and soft gluon resummation in the infrared region
Creators: name: Pancheri, G.
name: Godbole, R. M.
name: Grau, A.
name: Srivastava, Y. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A model for total cross-sections incorporating QCD jet cross-sections and soft gluon resummation is described and compared with present data on $pp$ and ${\bar p}p$ cross-sections. Predictions for LHC are presented for different parameter sets. It is shown that they differ according to the small x-behaviour of available parton density functions.
description: 10 pages, 3 figures, uses appolb.cls, LaTeX. Talk presented by G. Pancheri at the EURIDICE Final Meeting, August 24-27th, 2006, Kazimierz, Poland
Effective surface-tension in the noise-reduced voter model
Creators: name: Dall'Asta, Luca
name: Castellano, Claudio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The role of memory is crucial in determining the properties of many dynamical processes in statistical physics. We show that the simple addition of memory, in the form of noise reduction, modifies the overall scaling behavior of the voter model, introducing an effective surface tension analogous to that recently observed in memory-based models of social dynamics. The numerical results for low-dimensional lattices show a scaling behavior in good agreement with usual Cahn-Allen curvature-driven coarsening, even though slower preasymptotic regimes may be observed depending on the memory properties. Simple arguments and a mean-field analysis provide an explanation for the observed behavior that clarifies the origin of surface tension and the mechanism underlying the coarsening process.
description: 7 pages, 4 figures
Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands
Creators: name: Karthik, Raji
name: Padmavati, Gadi
Publisher: name: Environmental Research Institute Chulalongkorn University Press
Year: 2014
Subjects: South Andaman, algal bloom, dinoglagellate, Protoperidinium divergens

description: 4, 36, Applied Environmental Research
Προφυλακτική χορήγηση επαναληπτικών δόσεων βηταμεθαζόνης σε ασθενείς με επαπειλούμενο πρόωρο τοκετό
Creators: name: Μπόντης, Νικόλαος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Επαναληπτικές δόσεις κορτικοστεροειδών
Νεογνική νοσηρότητα
Σύνδρομο αναπνευστικής δυσχέρειας
Νεκρωτική εντεροκολίτιδα
Repeated corticosteroid doses
Neonatal morbidity
Respiratory distress syndrome
Necrotizing enterocolitis

description: Σκοπός η αξιολόγηση της αποτελεσματικότητας και η ασφάλεια της χορήγησης επαναληπτικών δόσεων βηταμεθαζόνης στην νοσηρότητα και θνησιμότητα των πρόωρων νεογνών και η σύγκριση με απλούστερα δοσολογικά σχήματα. Ασθενείς και μέθοδοι: σε 122 έγκυες με επαπειλούμενο πρόωρο τοκετό δόθηκε βηταμεθαζόνη σε τρία δοσολογικά σχήαμτα 1)12mgx1 για 2 24ωρα(Ν=41), 2)12mfx1 για 2 24ωρα και μια επαναληπτική δόση μετά από 7 ημέρες (Ν=41) 3)12mgx1 για 2 24ωρα και επαναληπτικές δόσεις ανά 7 ημέρες(Ν=40). Αξιολογήθηκαν η νεογνική νοσηρότητα και θνησιμότητα καθώς και οι πιθανές επιπτώσεις στην έγκυο. Συμπεράσματα : η προφυλακτική χορήγηση επαναληπτικών δόσεων βηταμεθαζόνης σε έγκυες με επαπειλούμενο πρόωρο τοκετό δεν φαίνεται να υπερτερεί έναντι των απλούστερων δοσολογικών σχημάτων τόσο ως προς τις επιδράσεις στην έγκυο όσο και προς την νοσηρότητα και θνησιμότητα των νεογνών
description: Objective : to evaluate the effectiveness and safety of repeated doses of betamethasone with recards to morbidity and mortality of the preterm neonates and with comparison to sincle dose treatment. Materials and methods : 122 pregnant women with threatened preterm labour were exposed to betamethasone treatment. Three different drug regimens were employed : 1)12mgx1 for 2 days (N=41), 2) 12mgx1 for 2 days plus one plus repeated doses every 7 days(N=40). Neonatal morbidity and mortality as well as potential maternal effects were evaluated. Conclusion : prophylactic administration of multiple courses of betamethasone to women threatened pretern labour is not superior to single courcea with regards to maternal health as well as neonatal morbidity and mortality
Pattern recognition in Deep Boltzmann machines
Creators: name: Agliari, Elena
name: Albanese, Linda
name: Alemanno, Francesco
name: Fachechi, Alberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a multi-layer Sherrington-Kirkpatrick spin-glass as a model for deep restricted Boltzmann machines and we solve for its quenched free energy, in the thermodynamic limit and allowing for a first step of replica symmetry breaking. This result is accomplished rigorously exploiting interpolating techniques and recovering the expression already known for the replica-symmetry case. Further, we drop the restriction constraint by introducing intra-layer connections among spins and we show that the resulting system can be mapped into a modular Hopfield network, which is also addressed rigorously via interpolating techniques up to the first step of replica symmetry breaking.
description: 24 pages, 2 figures
A morphological investigation of the effects of pregnant mare serum gonadotrophin on oocyte maturation, fertilization and embryonic development in rats
Creators: name: Britton, Ann Patricia
Publisher: name: University of British Columbia
Year: 2011

description: A delicate balance of steroid and gonadotrophic hormones is essential for intrafollicular oocyte maturation and successful fertilization and embryonic development. Previous studies have demonstrated that a superovulatory dose of pregnant mare serum gonadotrophin (PMSG) has excessive gonadotrophic activity and alters intrafol1icular steroid hormone levels. In a series of four experiments, the morphology of oocytes and embryos retrieved from immature rats, treated with either a low or high dose of PMSG, and mature, cycling rats was compared to determine whether a superovulatory dose of PMSG has an adverse effect on oocyte maturation and subsequent fertilization and embryonic development in immature rats. Morphological criteria for the assessment of intraoviductal oocyte aging were established in the first experiment. During intraoviductal aging, progressive morphological changes directed by the intrinsic developmental program of the oocyte were observed. Further alterations in morphology were attributed to abnormalities of cytoskeletal function. In the second experiment, no difference in morphology was observed between oocytes retrieved from immature rats treated with either 4 or 40 IU PMSG. When compared with mature rats, changes attributable to cytoskeletal instability were observed in aged oocytes from immature rats treated with both doses of PMSG. This was concluded to be a manifestation of altered intrafollicular oocyte maturation as a result of the administration of exogenous gonadotrophin. In the third and fourth experiments, delayed fertilization and a significant reduction in fertilization rate were observed in superovulated, immature rats. The major cause of fertilization failure was determined to be intraoviductal oocyte aging. A significant increase in abnormal embryos was observed as a result of parthenogenetic activation of the aged oocytes. Abnormal, fertilized embryos retrieved from the superovulated group were concluded to be the manifestation of delayed fertilization. In conclusion, the major effect of a superovulatory dose of PMSG on oocyte fertilizability and embryonic development was intraoviductal oocyte aging and delayed fertilization. Changes attributed to altered intrafol1icular maturation were manifested during oocyte aging in immature rats treated with either the low or high dose of PMSG.
Quantum Boltzmann Equations and Leptogenesis
Creators: name: De Simone, Andrea
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The closed time-path formalism is a powerful Green's function formulation to describe non-equilibrium phenomena in field theory and it leads to a complete non-equilibrium quantum kinetic theory. We make use of this formalism to write down the set of quantum Boltzmann equations relevant for leptogenesis. They manifest memory effects and off-shell corrections. In particular, memory effects lead to a time-dependent CP asymmetry whose value at a given instant of time depends upon the previous history of the system. This result is particularly relevant when the asymmetry is generated by the decays of nearly mass-degenerate heavy states, as in resonant or soft leptogenesis.
description: 21 pages, 5 figures. IOP LaTeX class used. Minor corrections and references added. Matches the version published in JCAP
A mirror construction for the totally nonnegative part of the Peterson variety
Creators: name: Rietsch, Konstanze
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20G20, 15A48, 14N35, 14N15

description: We explain how A. Givental's mirror symmetric family to the type A flag variety and its proposed generalization to partial flag varieties by Batyrev, Ciocan-Fontanine, Kim and van Straten relate to the Peterson variety Y in SL_n/B. We then use this theory to describe the totally nonnegative part of Y.
description: Now published, corrected minor typo in the introduction. An early version appeared as ESI preprint 1674; 27 pages, 2 figures
Vegetation Impact on Atmospheric Moisture Transport under Increasing Land-Ocean Temperature Contrasts
Creators: name: Makarieva, Anastassia M.
name: Nefiodov, Andrei V.
name: Nobre, Antonio Donato
name: Sheil, Douglas
name: Nobre, Paulo
name: Pokorný, Jan
name: Hesslerová, Petra
name: Li, Bai-Lian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Destabilization of the water cycle threatens human lives and livelihoods. Meanwhile our understanding of whether and how changes in vegetation cover could trigger abrupt transitions in moisture regimes remains incomplete. This challenge calls for better evidence as well as for the theoretical concepts to describe it. Here we briefly summarise the theoretical questions surrounding the role of vegetation cover in the dynamics of a moist atmosphere. We discuss the previously unrecognized sensitivity of local wind power to condensation rate as revealed by our analysis of the continuity equation for a gas mixture. Using the framework of condensation-induced atmospheric dynamics, we then show that with the temperature contrast between land and ocean increasing up to a critical threshold, ocean-to-land moisture transport reaches a tipping point where it can stop or even reverse. Land-ocean temperature contrasts are affected by both global and regional processes, in particular, by the surface fluxes of sensible and latent heat that are strongly influenced by vegetation. Our results clarify how a disturbance of natural vegetation cover, e.g., by deforestation, can disrupt large-scale atmospheric circulation and moisture transport. In view of the increasing pressure on natural ecosystems, successful strategies of mitigating climate change require taking into account the impact of vegetation on moist atmospheric dynamics. Our analysis provides a theoretical framework to assess this impact. The available data for Eurasia indicate that the observed climatological land-ocean temperature contrasts are close to the threshold. This can explain the increasing fluctuations in the continental water cycle including droughts and floods and signifies a yet greater potential importance for large-scale forest conservation.
description: 25 pages, 5 figures, and 1 table
Decoding Orders for Securing Untrusted NOMA
Creators: name: Thapar, Sapna
name: Mishra, Deepak
name: Saini, Ravikant
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This letter focuses on exploring a new decoding order to resolve the secrecy issue among untrusted nonorthogonal multiple access users. In this context, firstly, we identify the total number of possible decoding orders analytically. Then, we propose a decoding order strategy ensuring positive secrecy rate for all users, and obtain the number of feasible secure decoding orders based on this proposed strategy numerically. Thereafter, we present a suboptimal policy to avoid the computational complexity involved in finding the best secure decoding order. Numerical results illustrate that the suboptimal solution provides a performance gain of about 137% over therelevant benchmark.
description: IEEE Networking Letters, 4 Pages, 2 Figures
Additional codes and people in the British Business Census of Entrepreneurs (BBCE) not available through I-CeM
Creators: name: Van Lieshout, Carry
name: Bennett, Robert
name: Smith, Harry
Publisher: name: University of Cambridge
Year: 2019
Subjects: Entrepreneurship
Self-employment
Census
BBCE
I-CeM

description: The BBCE includes many codes not in I-CeM which can be linked through the individual identifiers (RecID). This paper provides further data corrections of I-CeM for sex, age and marital status; and codes for additional census respondents omitted in FMP and I-CeM. Downloads give the full data.
Relations between generalized and transverse momentum dependent parton distributions
Creators: name: Meissner, S.
name: Metz, A.
name: Goeke, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Recent work suggests non-trivial relations between generalized parton distributions on the one hand and (naive time-reversal odd) transverse momentum dependent distributions on the other. Here we review the present knowledge on such type of relations. Moreover, as far as spectator model calculations are concerned, the existing results are considerably extended. While various relations between the two types of parton distributions can be found in the framework of spectator models, so far no non-trivial model-independent relations have been established.
description: 25 pages, 9 figures; Eq. (B17) and typos corrected, identical with journal version
Silicate as the Probable Causative Agent for the Periodic Blooms in the Coastal Waters of South Andaman Sea
Creators: name: Raji, Karthik
name: Muthuraj, Arun Kumar
name: Padmavati, Gadi
Publisher: name: Environmental Research Institute Chulalongkorn University Press
Year: 2014
Subjects: Diatom, blooms, Andaman, silicate, Junglight Bay

description: 2, 36, Applied Environmental Research
Nonequilibrium thermodynamics of self-supervised learning
Creators: name: Salazar, Domingos S. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Self-supervised learning (SSL) of energy based models has an intuitive relation to equilibrium thermodynamics because the softmax layer, mapping energies to probabilities, is a Gibbs distribution. However, in what way SSL is a thermodynamic process? We show that some SSL paradigms behave as a thermodynamic composite system formed by representations and self-labels in contact with a nonequilibrium reservoir. Moreover, this system is subjected to usual thermodynamic cycles, such as adiabatic expansion and isochoric heating, resulting in a generalized Gibbs ensemble (GGE). In this picture, we show that learning is seen as a demon that operates in cycles using feedback measurements to extract negative work from the system. As applications, we examine some SSL algorithms using this idea.
description: 6 pages, 1 figure
Comparing Throughfall and Litterfall Nutrient Fluxes in a Bubber (Hevea brasiliensis willd. Muell-arg) Plantation Agro-ecosystem at Ikenne, South-west Nigeria
Creators: name: Adedeji, Oludare
name: Gbaddegesin, Adeniyi
Publisher: name: Environmental Research Institute Chulalongkorn University Press
Year: 2014
Subjects: Agro-ecosystem, canopy interception, Hevea brasiliensis, litterfall, nutrient cycling, throughfall, Ikenne

description: 3, 36, Applied Environmental Research
Exploring the Limits of Few-Shot Link Prediction in Knowledge Graphs
Creators: name: Jambor, Dora
name: Teru, Komal
name: Pineau, Joelle
name: Hamilton, William L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Real-world knowledge graphs are often characterized by low-frequency relations - a challenge that has prompted an increasing interest in few-shot link prediction methods. These methods perform link prediction for a set of new relations, unseen during training, given only a few example facts of each relation at test time. In this work, we perform a systematic study on a spectrum of models derived by generalizing the current state of the art for few-shot link prediction, with the goal of probing the limits of learning in this few-shot setting. We find that a simple zero-shot baseline - which ignores any relation-specific information - achieves surprisingly strong performance. Moreover, experiments on carefully crafted synthetic datasets show that having only a few examples of a relation fundamentally limits models from using fine-grained structural information and only allows for exploiting the coarse-grained positional information of entities. Together, our findings challenge the implicit assumptions and inductive biases of prior work and highlight new directions for research in this area.
description: code available at https://github.com/dorajam/few-shot-link-prediction-paper
Social Sciences and Humanities Framework Report. Framing the research, development and design processes when building a prototype of a citizen-centred interoperable health-data exchange platform
Creators: name: Ulrike, Felt
name: Öchsner, Susanne
name: Rae, Robin
Publisher: name: Zenodo
Year: 2019
Subjects: digital health; health data platforms; infrastructuring health; responsible research and innovation; co-creation; digital literacy;

description: The objective of Deliverable 1.1 is to provide a general Social Sciences and Humanities (SSH) framework for the Horizon 2020 project Smart4Health . This project aims to build the prototype of an interoperable health-data platform – the 4HealthPlatform – and a corresponding user portal – the 4HealthNavigator – in order to empower citizens to proactively engage in managing their health. Embracing a citizen centred approach, the project will engage in a co-creation process predominantly involving citizen-users. This SSH framework will outline both the main approach and the kinds of questions that need to be asked during the research, development and design processes. Our report testifies to the consortium’s awareness that the challenges of building such a health-data platform are never solely technical but are also always social. The report starts with outlining the Responsible Research and Innovation approach and the corresponding processes of co-creation. In the following three chapters the challenges of infrastructuring health, the ways in which users and non-users should be understood and integrated and questions of governance of health-data infrastructures are addressed. Each of the chapter end with a set of questions that need to be addressed in the multiple processes of esearch, development and design.
Fine structure in the gamma-ray sky and the origin of UHECR
Creators: name: Erlykin, A. D.
name: Wolfendale, A. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The EGRET results for gamma ray intensities in and near the Galactic Plane have been analysed in some detail. Attention has been concentrated on energies above 1 GeV and the individual intensities in a $4^{\circ}$ longitude bin have been determined and compared with the large scale mean found from a nine-degree polynomial fit. Comparison has been made of the observed standard deviation for the ratio of these intensities with that expected from variants of our model. The basic model adopts cosmic ray origin from supernova remnants, the particles then diffusing through the Galaxy with our usual `anomalous diffusion'. The variants involve the clustering of SN, a frequency distribution for supernova explosion energies, and 'normal', rather than 'anomalous' diffusion. It is found that for supernovae of unique energy, and our usual anomalous diffusion, clustering is necessary, particularly in the Inner Galaxy. An alternative, and preferred, situation is to adopt the model with a frequency distribution of supernova energies. The results for the Outer Galaxy are such that no clustering is required. If their explosion energies are distributed then supernovae can be the origin of UHECR.
description: 8 pages, 5 figures and 1 table, to appear in the proceedings of the CRIS2006 symposium, Catania, Italy, May-June 2006
Stark shift of excitons and trions in two-dimensional materials
Creators: name: Cavalcante, L. S. R.
name: da Costa, D. R.
name: Farias, G. A.
name: Reichman, D. R.
name: Chaves, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effect of an external in-plane electric field on neutral and charged exciton states in two-dimensional (2D) materials is theoretically investigated. These states are argued to be strongly bound, so that electron-hole dissociation is not observed up to high electric field intensities. Trions in the anisotropic case of monolayer phosphorene are demonstrated to especially robust under electric fields, so that fields as high as 100 kV/cm yield no significant effect on the trion binding energy or probability density distribution. Polarizabilities of excitons are obtained from the parabolicity of numerically calculated Stark shifts. For trions, a fourth order Stark shift is observed, which enables the experimental verification of hyperpolarizability in 2D materials, as observed in the highly excited states of the Rydberg series of atoms and ions.
description: 7 pages, 4 figures, 3 tables
On quaternionic functional analysis
Creators: name: Ng, Chi-Keung
Publisher: name: arXiv
Year: 2006
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 16D20; 46B04; 46C05; 46L05; 81S99

description: In this article, we will show that the category of quaternion vector spaces, the category of (both one-sided and two sided) quaternion Hilbert spaces and the category of quaternion $B^*$-algebras are equivalent to the category of real vector spaces, the category of real Hilbert spaces and the category of real $C^*$-algebras respectively. We will also give a Riesz representation theorem for quaternion Hilbert spaces and will extend two results of Kulkarni (namely, we will give the full versions of the Gelfand-Naimark theorem and the Gelfand theorem for quaternion $B^*$-algebras). On our way to these results, we compare, clarify and unify the term "quaternion Hilbert spaces" in the literatures.
description: to appear in the Mathematical Proceedings of the Cambridge Philosophical Society
Geochemical Pollution Assessment of Sediment Metal from Lower Region of the Ogun River, Nigeria
Creators: name: Diayi, Anslem
name: Gbadebo, Michael
Publisher: name: Environmental Research Institute Chulalongkorn University Press
Year: 2014
Subjects: Sediment, heavy metal, geochemical, Ogun River, pollution

description: 4, 36, Applied Environmental Research
The development of Network Power System Website using Extreme Programming Method
Creators: name: Mochamad Alif Fany Taftazani
name: Darwiyanto, Eko
name: Nurtantyana, Rio
Publisher: name: Indonesia Journal on Computing (Indo-JC)
Year: 2024

description: Latest advancements in information technology have been widely utilized in various sectors, including the processing and storage of corporate data. Data is an important asset for companies, like the PT Smartfren Telecom Tbk (Smartfren), a leading telecommunication service providers in Indonesia. One crucial dataset at the Smartfren Surabaya branch office is Network Power System (NPS) data, which is currently manually input and stored in Microsoft Excel, causing inefficiency and risk of human error. This study aims to create a website to manage NPS data using the Extreme Programming (XP) method. By doing so, NPS data with more than three thousand records can be easily processed and stored systematically. The research' procedure based on XP includes planning, design, coding, and testing with Black-box and User Acceptance testing with three iterations. Black-box testing result showed a 100% functionality level in each iteration, and User Acceptance Testing results were 87.09% in the first iteration, 87.27% in the second, and 92% in the third. Therefore, this confirms that the NPS website system successfully meets standards and the users’ needs. Hence, this study demonstrated the advantages of transitioning from manual way to web-based systems and developed using XP method to evolving the user needs.
description: Indonesia Journal on Computing (Indo-JC), Vol. 9 No. 2 (2024): August, 2024