cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ανάλυση σπάνιων γαιών με φορητό σύστημα φθορισομετρίας ακτινών Χ
Creators: name: Λυκάκη Μαρία
Publisher: name: Technical University of Crete
Year: 2013

description: φ. 1: Σπάνιες γαίες -- Κεφ. 2: Θεμελιώδεις αρχές ακτίνων Χ - Φθορισμός ακτίνων Χ -- Κεφ. 3: Πειραματικό μέρος - Πρότυπες ουσίες και οργανολογία
Frank M. Ausbüttel, Die Verwaltung des römischen Kaiserreiches. Von der Herrschaft des Augustus bis zum Niedergang des Weströmischen Reiches
Creators: name: Nitschke, Jens
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Frank M. Ausbüttel, Die Verwaltung des römischen Kaiserreiches. Von der Herrschaft des Augustus bis zum Niedergang des Weströmischen Reiches. Darmstadt: Wiss. Buchges. 1998. IX, 222 S. (ISBN 3 5341 22 720).
description: Forum Classicum, Nr. 2 (2000): Forum Classicum
title: Μελέτη της επίδρασης της ύφανσης των ινών στις μηχανικές ιδιότητες ινοπλισμένων σύνθετων υλικών
Creators: name: Αντωνογιαννάκης Αντώνης Ε.
Publisher: name: Technical University of Crete
Year: 2013

description: Μη διαθέσιμο
Thermal transport properties of the nanocomposite system "porous silicon/ionic liquid"
Creators: name: Lishchuk, Pavlo
name: Vashchuk, Alina
name: Rogalsky, Sergiy
name: Chepela, Lesia
name: Borovyi, Mykola
name: Lacroix, David
name: Isaiev, Mykola
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This paper investigates thermal transport in a nanocomposite system "porous silicon matrix filled with ionic liquid". First, the thermal conductivity and heat capacity of two imidazolium and one ammonium ionic liquids were evaluated using the photoacoustic approach in piezoelectric configuration and differential scanning calorimetry, respectively. Then, the thermal transport properties of the composite system "ionic liquid confined inside porous silicon matrix" were investigated with the photoacoustic approach in gas-microphone configuration. It was found that a significant enhancement of the thermal conductivity of the composite when compared to the individual components, i.e. (i) more than two times for pristine porous silicon and (ii) more than eight times for ionic liquids. These results provide new paths for innovative solutions in the field of thermal management in highly efficient energy storage devices.
title: Αλληλεπιδράσεις ατόμου-φωτονίων σε συζευγμένες οπτικές μίκρο-κοιλότητες
Creators: name: Σχετάκης Νικόλαος
Publisher: name: Technical University of Crete
Year: 2012

description:  Εισαγωγή -- 2. Κβαντική ηλεκτροδυναμικών κοιλοτήτων -- 3. Συζευγμένες σε σειρά κοιλότητες
title: Development of an innovative damage detection monitoring system for concrete structures using smart piezoelectric materials
Creators: name: Τσιστράκης Σταύρος Ε.
Publisher: name: Technical University of Crete
Year: 2013

description:  Basic theory -- 2. Wave propagation in solids -- 3. History and applications of piezoelectric materials -- 4. Electro-mechanical impedance (EMI) technique -- 5. Organization -- 6. Materials and methods -- 7. "Smart" aggregates --Monitoring of the curing process -- 9. Damage induction
Polish Natural Language Inference and Factivity -- an Expert-based Dataset and Benchmarks
Creators: name: Ziembicki, Daniel
name: Wróblewska, Anna
name: Seweryn, Karolina
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Despite recent breakthroughs in Machine Learning for Natural Language Processing, the Natural Language Inference (NLI) problems still constitute a challenge. To this purpose we contribute a new dataset that focuses exclusively on the factivity phenomenon; however, our task remains the same as other NLI tasks, i.e. prediction of entailment, contradiction or neutral (ECN). The dataset contains entirely natural language utterances in Polish and gathers 2,432 verb-complement pairs and 309 unique verbs. The dataset is based on the National Corpus of Polish (NKJP) and is a representative sample in regards to frequency of main verbs and other linguistic features (e.g. occurrence of internal negation). We found that transformer BERT-based models working on sentences obtained relatively good results ($\approx89\%$ F1 score). Even though better results were achieved using linguistic features ($\approx91\%$ F1 score), this model requires more human labour (humans in the loop) because features were prepared manually by expert linguists. BERT-based models consuming only the input sentences show that they capture most of the complexity of NLI/factivity. Complex cases in the phenomenon - e.g. cases with entitlement (E) and non-factive verbs - remain an open issue for further research.
Changes in climate extremes and their impacts on the natural physical environment
Creators: name: Seneviratne, Sonia
name: Nicholls, Neville
name: Easterling, David
name: Goodess, Clare
name: Kanae, Shinjiro
name: Kossin, James
name: Luo, Yali
name: Marengo, Jose
name: McInnes, Kathleen
name: Rahimi, Mohammad
name: Reichstein, Markus
name: Sorteberg, Asgeir
name: Vera, Carolina
name: Zhang, Xuebin
name: Alexander, Lisa V.
name: Allen, Simon
name: Benito, Gerardo
name: Cavazos, Tereza
name: Clague, John
name: Conway, Declan
name: Della-Marta, Paul M.
name: Gerber, Markus
name: Gong, Sunling
name: Goswami, B. N.
name: Hemer, Mark
name: Huggel, Christian
name: Van Den Hurk, Bart
name: Kharin, Viatcheslav V.
name: Kitoh, Akio
name: Klein Tank, Albert M.G.
name: Li, Guilong
name: Mason, Simon J.
name: McGuire, William
name: Van Oldenborgh, Geert Jan
name: Orlowsky, Boris
name: Smith, Sharon
name: Thiaw, Wassila
name: Velegrakis, Adonis
name: Yiou, Pascal
name: Zhang, Tingjun
name: Zhou, Tianjun
name: Zwiers, Francis W.
Publisher: name: Columbia University
Year: 2012
Subjects: Climatology
Climatic changes
Climatic extremes
Natural disasters
Natural disasters--Forecasting

description: Chapter 3 of Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation. A Special Report of Working Groups I and II of the Intergovernmental Panel on Climate Change (IPCC). This chapter addresses changes in weather and climate events relevant to extreme impacts and disasters.
Bibliotheca Teubneriana Latina (BTL 1) CD- ROM-Edition
Creators: name: Kipf, Stefan
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Bibliotheca Teubneriana Latina (BTL 1) CD- ROM-Edition. Hrsg. von K. G. Saur München-Leipzig; Brepols N. V Turnhout, Belgien. Wissenschaftliche Leitung CETEDOC - Universite Catholique de Louvain a Louvain-la-Neuve.
description: Forum Classicum, Nr. 2 (2000): Forum Classicum
Planar Orthogonal Polynomials as Type I Multiple Orthogonal Polynomials
Creators: name: Berezin, Sergey
name: Kuijlaars, Arno B. J.
name: Parra, Iván
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A recent result of S.-Y. Lee and M. Yang states that the planar orthogonal polynomials orthogonal with respect to a modified Gaussian measure are multiple orthogonal polynomials of type II on a contour in the complex plane. We show that the same polynomials are also type I orthogonal polynomials on a contour, provided the exponents in the weight are integer. From this orthogonality, we derive several equivalent Riemann-Hilbert problems. The proof is based on the fundamental identity of Lee and Yang, which we establish using a new technique.
Compact 3-manifolds via 4-colored graphs
Creators: name: Cristofori, Paola
name: Mulazzani, Michele
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: Primary 57M27, 57N10, Secondary 57M15

description: We introduce a representation of compact 3-manifolds without spherical boundary components via (regular) 4-colored graphs, which turns out to be very convenient for computer aided study and tabulation. Our construction is a direct generalization of the one given in the eighties by S. Lins for closed 3-manifolds, which is in turn dual to the earlier construction introduced by Pezzana's school in Modena. In this context we establish some results concerning fundamental groups, connected sums, moves between graphs representing the same manifold, Heegaard genus and complexity, as well as an enumeration and classification of compact 3-manifolds representable by graphs with few vertices ($\le 6$ in the non-orientable case and $\le 8$ in the orientable one).
description: 25 pages, 11 figures; changes suggested by referee: references added, figure 2 modified, results about classification of the manifolds in Proposition 17 announced at the end of section 9. Accepted for publication in RACSAM. The final publication is available at Springer (see DOI)
title: Εν-τόπια  ατοπήματα, αναζητώντας το ελληνικό αποτύπωμα στις τουριστικές διαδρομές

Creators: name: Καραμπουζη Ευαγγελια
name: Λιακου Γεωργια
Publisher: name: Technical University of Crete
Year: 2015

description: Για να καταλήξουμε στο θέμα της παρούσας εργασίας, περάσαμε από διάφορα στάδια μελέτης και έρευνας,με τον όρο τοπίο ως βασικό εργαλείο επέμβασης, αναζητώντας ένα θέμα όχι απλά επίκαιρο, αλλά ταυτόχρονα ενδιαφέρον και παραγωγικό. Μετά από σκέψη, συνειδητοποιήσαμε ότι ένα θέμα που χρήζει και απολαμβάνει αυξάνουσας προσοχής είναι ο τουρισμός, και πιο συγκεκριμένα πώς το ελληνικό τοπίο αλληλεπιδρά, χαρακτηρίζεται και μεταλλάσσεται, ιδωμένο μέσα από το πρίσμα της τουριστικής κίνησης και βιομηχανίας. Αρχικά, πριν ξεκινήσουμε να καταθέτουμε και να δομούμε τις απόψεις μας, αναζητήσαμε μια πλήρη βιβλιογραφία και αρθρογραφία που συνέβαλλε σφαιρικά για την έρευνά μας. Προσπαθώντας να αποφύγουμε άτοπες γενικεύσεις και μονόπλευρες οπτικές, επεκτείναμε το γνωστικό μας πλαίσιο, μέσα από μια διεπιστημονική προσέγγιση που περιελάμβανε και μη αρχιτεκτονικά κείμενα, όπως για παράδειγμα θέματα πολιτικής σκέψης. Στη συνέχεια, αποδελτιώσαμε τα κείμενα που προσιδιάζουν καλύτερα στη θεματική μας και την προσωπική μας άποψη σχετικά  και ξεκινήσαμε τη συγγραφή. Στο πρώτο στάδιο της εργασίας, θα αναλύσουμε τον τουρισμό στο ελληνικό έδαφος και τις μεταλλάξεις που παρατηρούνται μέσα στην πάροδο του χρόνου. Θα καταλήξουμε προοδευτικά στο σημερινό τουριστικό  μοτίβο και θα επικεντρωθούμε στις σχέσεις τουρισμός και τοπίο. Η κατανόηση των αιτιών είναι άλλωστε απαραίτητη προκειμένου να προκύψουν ερωτήματα και να προταθούν πιθανές κατευθύνσεις. Έπειτα, θα επικεντρωθούμε στα αποτελέσματα που επέφεραν οι παραπάνω αιτίες, όπως είναι για παράδειγμα η εν μέρει αποσπασματική - και κατά περίπτωση επίπλαστη - εικόνα της Ελλάδας που προωθείται από τα μέσα μαζικής ενημέρωσης και κατά συνέπεια η αποσπασματική εκμετάλλευση του τοπίου. Αναγκαία κρίνεται στη συνέχεια η αντιδιαστολή της παραπάνω κατάστασης   με την ουσία του ελληνικού τοπίου όπως αυτό διαφαίνεται μέσα από την αρχιτεκτονική, τη μνήμη και παράδοση της Ελλάδας αλλά και τη λογοτεχνική της παραγωγή. Κοινώς, θα καταλήξουμε να αποκωδικοποιήσουμε την έννοια του ελληνικού χαρακτήρα του εκάστοτε τόπου.
Sequential Randomized Algorithms for Convex Optimization in the Presence of Uncertainty
Creators: name: Chamanbaz, Mohammadreza
name: Dabbene, Fabrizio
name: Tempo, Roberto
name: Venkataramanan, Venkatakrishnan
name: Wang, Qing-Guo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this paper, we propose new sequential randomized algorithms for convex optimization problems in the presence of uncertainty. A rigorous analysis of the theoretical properties of the solutions obtained by these algorithms, for full constraint satisfaction and partial constraint satisfaction, respectively, is given. The proposed methods allow to enlarge the applicability of the existing randomized methods to real-world applications involving a large number of design variables. Since the proposed approach does not provide a priori bounds on the sample complexity, extensive numerical simulations, dealing with an application to hard-disk drive servo design, are provided. These simulations testify the goodness of the proposed solution.
description: 18 pages, Submitted for publication to IEEE Transactions on Automatic Control
The use of bootstrap confidence intervals for the correlation coeffficient in climatology
Creators: name: Mason, Simon J.
name: Mimmack, Gillian M.
Publisher: name: Columbia University
Year: 1992
Subjects: Climatology
Climatic changes
Climatic changes--Statistical methods
Southern oscillation

description: The importance of defining confidence intervals for sample statistics that are used to estimate characteristics of the parent population(s) is emphasised. Not all sample statistics are unbiased estimators or have normally distributed sampling distributions and so it is not always easy to reflect the reliability of the estimator. In such cases, Efron's “bias corrected percentile method”, which uses bootstrap samples to estimate the bias and makes no assumptions about the distribution of the sample statistic can be used to define confidence limits for the population parameter. The method is explained and the procedure for calculating the confidence limits is outlined. As an example, bootstrap confidence limits calculated for the maximum correlation between the Southern Oscillation Index and rainfall at South African stations over the period 1935–1983 suggest that the sample correlation is an unreliable measure of the true association. One possible reason for this is that the association is thought to have broken down during the 1940s. However, the reliability of the estimator does not seem to improve when confidence limits are calculated for the 30-year period 1954–1983. It is possible that the width of the confidence interval is an indication of more than one distinct statistical population.
Beate Fey-Wickert: Calpurnius Siculus. Kommentar zur 2. und 3. Ekloge
Creators: name: Lobe, Michael
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Beate Fey-Wickert: Calpurnius Siculus. Kommentar zur 2. und 3. Ekloge. Trier 2002. (BAC 53) 249 S. ISBN 3-88476-557-4.
description: Forum Classicum, Nr. 3 (2004): Forum Classicum
title: Πορεία / εμπειρία βουνού,  από το Ιδαίον Άντρον στο οροπέδιο της Νίδας

Creators: name: Καραμπουζη Ευαγγελια
name: Λιακου Γεωργια
Publisher: name: Technical University of Crete
Year: 2015

description: Το τοπίο ιδωμένο μέσα από το βλέμμα του μύθου και της μνήμης ιδανικοποιείται ,μέσα από  μια διαδικασία αναγνώρισης και υποβολής του επισκέπτη .Οι πλαγιές του Ψηλορείτη και το ιδιαίτερο τοπίο, αποτελούν το υπόβαθρο μελέτης των εννοιών αυτών .Η έντονη γεωμορφολογία και η αίσθηση ελληνικότητας που αποπνέει ο τόπος σκιαγραφούνται μέσω μιας κατηφορικής διαδρομής συνδυάζοντας τον μύθο με την παράδοση και την μνήμη και τον άνθρωπο με το τοπίο. Η περιοχή μελέτης οριοθετείται από την οροσειρά της  Ίδης (Ψηλορείτης) και το οροπέδιο της Νίδας (στην Ίδα) . Απότομες και πλούσιες σε φαράγγια και σπήλαια πλαγιές από την μια, και  μια  ομαλή απλάδα από την άλλη, συνθέτουν ένα σχετικά πολύπλοκο και θεαματικό  τοπίο. Στοιχεία που πλάθουν  την αίσθηση της μοναδικότητας της περιοχής αποτελούν το Ιδαίον άντρον , σπήλαιο όπου η μυθολογία φέρει τον Κρηταγενή Δία να βρίσκει καταφύγιο ως νεογέννητο , καθώς και  διάσπαρτες στο οροπέδιο, ξερολιθικές κατασκευές με θόλο , τα λεγόμενα μιτάτα που αποτελούν εποχιακές κατοικίες των βοσκών.
Ενδιάμεσοι σταθμοί στην πορεία που προσπαθούμε να αναδείξουμε αποτελούν ο ανοιχτός χώρος («πλατεία») με τη μονή της Ανάληψης, ένα εγκαταλελειμμένο κτίριο (παλαιότερη χρήση του οποίου εικάζεται πως ήταν από κτηνοτρόφους της περιοχής) με μια ιδιαίτερη διαμορφωμένο εξωτερικό χώρο στάσης με ποτίστρες για τα ζώα, και τέλος το υπάρχον Πληροφοριακό κέντρο Νίδας, ένα κτίριο με προσθήκες σε διαφορετικές περιόδους των τελευταίων δεκαετιών το οποίο στην παρούσα φάση δεν φέρει κάποια ιδιαίτερη χρήση.
Αυτοί οι 5 σταθμοί  (Ιδαίο Άντρο, μονή Ανάληψης, «στάνη», Πληροφοριακό κέντρο, οροπέδιο Νίδας) αποτελούν τον κορμό της πορείας που θέλουμε σαν κεντρική ιδέα να αναδείξουμε μέσω εξωτερικής διαμόρφωσης αλλά και ανακατασκευή κάποιων κλειστών χώρων που φέρουν τις βασικές λειτουργίες.
Discrete Simulation Optimization for Tuning Machine Learning Method Hyperparameters
Creators: name: Ramamohan, Varun
name: Singhal, Shobhit
name: Gupta, Aditya Raj
name: Bolia, Nomesh Bhojkumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Machine learning (ML) methods are used in most technical areas such as image recognition, product recommendation, financial analysis, medical diagnosis, and predictive maintenance. An important aspect of implementing ML methods involves controlling the learning process for the ML method so as to maximize the performance of the method under consideration. Hyperparameter tuning is the process of selecting a suitable set of ML method parameters that control its learning process. In this work, we demonstrate the use of discrete simulation optimization methods such as ranking and selection (R&S) and random search for identifying a hyperparameter set that maximizes the performance of a ML method. Specifically, we use the KN R&S method and the stochastic ruler random search method and one of its variations for this purpose. We also construct the theoretical basis for applying the KN method, which determines the optimal solution with a statistical guarantee via solution space enumeration. In comparison, the stochastic ruler method asymptotically converges to global optima and incurs smaller computational overheads. We demonstrate the application of these methods to a wide variety of machine learning models, including deep neural network models used for time series prediction and image classification. We benchmark our application of these methods with state-of-the-art hyperparameter optimization libraries such as $hyperopt$ and $mango$. The KN method consistently outperforms $hyperopt$'s random search (RS) and Tree of Parzen Estimators (TPE) methods. The stochastic ruler method outperforms the $hyperopt$ RS method and offers statistically comparable performance with respect to $hyperopt$'s TPE method and the $mango$ algorithm.
Armin Müller: Was die Säulen nicht mehr sagen. Ein Kulturreiseführer für Anspruchsvolle. Athen, Attika und benachbarte Inseln
Creators: name: Gertz, Norbert
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Armin Müller: Was die Säulen nicht mehr sagen. Ein Kulturreiseführer für Anspruchsvolle. Athen, Attika und benachbarte Inseln. Münster: Aschendorff Verlag 2004, 304 S., (ISBN 3- 402-02617-1)
description: Forum Classicum, Nr. 4 (2004): Forum Classicum
Sea-surface temperature - South African rainfall associations 1910 - 1989
Creators: name: Mason, Simon J.
Publisher: name: Columbia University
Year: 1995
Subjects: Climatology
Climatic changes
Rain and rainfall
Water temperature
Southern oscillation

description: The main features of sea‐surface temperature variability in the South Atlantic and the south‐west Indian Oceans are identified and their interaction with the Southern Oscillation discussed. Most of the variance is explained by coherent features of variability in the South Atlantic Ocean. Tropical and subtropical features dominate the variance, but this may be partly a reflection of data availability. Many of the principal components are associated with rainfall over southern Africa and the strongest associations occur with sea‐surface temperatures in the western equatorial Indian Ocean, the Agulhas system, and the central South Atlantic Ocean.
Towards Anisotropy-Free and Non-Singular Bounce Cosmology with Scale-invariant Perturbations
Creators: name: Qiu, Taotao
name: Gao, Xian
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate non-singular bounce realizations in the framework of ghost-free generalized Galileon cosmology, which furthermore can be free of the anisotropy problem. Considering an Ekpyrotic-like potential we can obtain a total Equation-of-State (EoS) larger than one in the contracting phase, which is necessary for the evolution to be stable against small anisotropic fluctuations. Since such a large EoS forbids the Galileon field to generate the desired form of perturbations, we additionally introduce the curvaton field which can in general produce the observed nearly scale-invariant spectrum. In particular, we provide approximate analytical and exact semi-analytical expressions under which the bouncing scenario is consistent with observations. Finally, the combined Galileon-curvaton system is free of the Big-Rip after the bounce.
description: 13 pages, 9 figures
Percolation and disorder-resistance in cellular automata
Creators: name: Gravner, Janko
name: Holroyd, Alexander E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We rigorously prove a form of disorder-resistance for a class of one-dimensional cellular automaton rules, including some that arise as boundary dynamics of two-dimensional solidification rules. Specifically, when started from a random initial seed on an interval of length $L$, with probability tending to one as $L\to\infty$, the evolution is a replicator. That is, a region of space-time of density one is filled with a spatially and temporally periodic pattern, punctuated by a finite set of other finite patterns repeated at a fractal set of locations. On the other hand, the same rules exhibit provably more complex evolution from some seeds, while from other seeds their behavior is apparently chaotic. A principal tool is a new variant of percolation theory, in the context of additive cellular automata from random initial states.
description: Published at http://dx.doi.org/10.1214/14-AOP918 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Investigation of molecular regulators in osteoblast differentiation
Creators: name: Osman, M
Publisher: name: University of Liverpool Repository
Year: 2017

description: Bones provide mechanical support for movement and normal daily functions, which can only be provided when healthy. Bone diseases such as osteoporosis and cancer are a worldwide problem affecting millions of people and causing significant financial impact. This study should indicate possible solutions that might contribute to combatting bone diseases by understanding the expression of bone markers that are known to be expressed differentially at different stages of osteoblastic differentiation. Thus a reliable, easily available and easy to maintain bone cell model was selected using osteosarcoma cell lines (MG-63, TE-85 and SaOS-2). The effect of ATP and PTH treatments on the expression of these markers was also tested to determine differences with primary osteoblasts (HOBs). We also determined the differential expression of miRNAs between the cell lines and HOBs and identified miRNAs involved in regulating expression of sclerostin, examining also their effect on the properties of trabecular bone in a mouse model. We hypothesized that these models were appropriate for studying the biology of osteoblastic cells and that miRNAs could control bone cell phenotype. In the first objective of this study, the expression of seven bone markers actively involved in bone development (OPG, ALP, COL1A2, COL6A3, SOST, OSX and RANKL) were investigated. The expression of OPG, COL1A2 and COL6A3 were significantly higher in the least differentiated cell line, MG-63, while expression of ALP, SOST, OSX and RANKL were highest in SaOS-2, the most differentiated. ATP and PTH exerted the expected inhibitory or inductive effects on the cells at the osteoblastic maturation stage confirming that the cell lines were a suitable model for the study of osteoblasts. MicroRNA profiling of cell lines and HOBs revealed hundreds of differentially expressed miRNAs. Six that were predicted to target the regulation of SOST were chosen for further validation. Mimics and antagomirs of these were transfected into TE-85 and SaOS-2 cells to confirm their involvement in SOST expression regulation. SOST gene expression and protein production were quantified by qPCR and ELISA, revealing that miR-1231, miR-1254 and miR-1914 decreased SOST protein expression in TE-85 and SaOS-2 cells and miR-378a-3p in just TE-85 cells, but these effects were not reversed by the corresponding antagomir. Adult and elderly mice were treated with miR-378a-3p mimic and antagomir by injection into the tail vein. Few differences could be observed in trabecular bone three weeks following treatment, except for significantly increased trabecular pattern factor and decreased trabecular separation in elderly mice treated with miR-378a-3p mimic. In conclusion, this thesis demonstrates that ATP and PTH regulate osteosarcoma cell lines similarly to HOBs and that miRNAs can be used to control SOST protein expression. Potential future studies should investigate miRNAs as novel therapies for bone diseases.
Droughts over southern Africa in a doubled-CO2 climate
Creators: name: Joubert, Alec
name: Mason, Simon J.
name: Galpin, Jacqueline
Publisher: name: Columbia University
Year: 1997
Subjects: Climatology
Climatic changes
Atmospheric carbon dioxide--Climatic factors
Droughts
Rain and rainfall

description: The southern African region is susceptible to climatic extremes and particularly to extended dry periods. Possible changes in the probability of dry years under doubled‐CO2 conditions are examined using output from the CSIRO nine‐level general circulation model. Changes in annual mean rainfall are not expected to be significant. However, the model simulates an increase in the probability of dry years in the tropics, to the south‐west of the subcontinent, as well as over the western and eastern parts of South Africa and southern Mozambique, where large percentage increases in the most intense dry spells are indicated. A decrease in the frequency of dry years is simulated over much of the interior of the subcontinent south of 10°S. In regions where the frequency of dry years decreases, the most severe events occur less often. The CSIRO nine‐level model indicates a shift in the frequency distribution of daily rainfall events under doubled‐CO2 conditions. A small change in the frequency distribution of daily rainfall events may have further implications for the frequency of mid‐summer droughts during the peak summer rainfall period of December–February. Increases in the frequency of mid‐summer droughts are simulated over the eastern part of the subcontinent south of 20°S.
Bright Lights, British Thermal Units
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: Guests are members of the band Bright Lights: Michael Simmons (acoustic guitar, vocals) and Chuck Goldberg (harmony vocals). They perform live: "Long Black Veil," "As I Walk By the Moon," "Tonight I'll Be Staying Here With You," "Wine Do Yer Stuff," "Truck Drivin' Son-of-a-Gun," "Sin City," "Crazy Arms," and original goodbye song ('Faculty Flunky'?). Promote band's upcoming shows with Bob. Beginning of "Awaiting On You All" by George Harrison
Topological near fields generated by topological structures
Creators: name: Peng, Jie
name: Zhang, Ruo-Yang
name: Jia, Shiqi
name: Liu, Wei
name: Wang, Shubo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The central idea of metamaterials and metaoptics is that, besides their base materials, the geometry of structures offers a broad extra dimension to explore for exotic functionalities. Here, we discover that the topology of structures fundamentally dictates the topological properties of optical near fields and offers a new dimension to exploit for optical functionalities that are irrelevant to specific material constituents or structural geometries. We find that the nontrivial topology of metal structures ensures the birth of polarization singularities (PSs) in the near field with rich morphologies and intriguing spatial evolutions including merging, bifurcation, and topological transition. By mapping the PSs to non-Hermitian exceptional points and employing homotopy theory, we extract the core invariant that governs the topological classification of the PSs and the conservation law that regulates their spatial evolutions. The results have effectively bridged three vibrant fields of singular optics, topological photonics, and non-Hermitian physics, with potential applications in chiral sensing, chiral quantum optics, and beyond photonics in other wave systems.
description: 44 pages, 9 figures
DNA melting in poor solvent
Creators: name: Majumdar, Debjyoti
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The melting phase diagram of a double-stranded DNA in poor solvent is studied using the pruned and enriched Rosenbluth method on a simple cubic lattice. As the solvent quality is changed from good to poor, there is a non-monotonic change in the melting temperature. First-order melting transition, as in good solvent, gives way to continuous transition and then to further broadened transitions where the order parameter smoothly becomes zero for sufficiently poor solvent. This change in the melting behavior is accompanied by a continuously varying critical exponent along the melting curve, hinting at a non-universal nature of the melting transition. Further, we show that an unbound phase can be achieved just by changing the solvent quality. Importantly, our results conform to the experimental findings qualitatively.
description: 9 pages, 6 figures
title: Η ανερχόμενη παγκοσμιοποιημένη μορφοκλασματική διάσταση της αρχιτεκτονικής
Creators: name: Τολης Νικηφορος
Publisher: name: Technical University of Crete
Year: 2015

description: Η αρχιτεκτονική αποτελεί ένα σύστημα, το οποίο δέχεται πληροφορίες από το περιβάλλον του, τις επεξεργάζεται και τις επιστρέφει σε αυτό, μετατρέποντάς το σε δομημένο. Σύμφωνα με την επιστημολογία του Thomas Kuhn, ένα από τα επιστημονικά παραδείγματα του 20ου αιώνα είναι αυτό της Θεωρίας του Χάους. Απόρροια αυτής της θεωρίας είναι τα μορφοκλάσματα.

Στην παρούσα ερευνητική εργασία, γίνεται μια προσπάθεια επεξήγησης και στη συνέχεια συσχέτισης της Θεωρίας του Χάους με την αρχιτεκτονική επίλυση, από τη σύλληψη μέχρι την υλοποίηση της, με το περίπλοκο της μορφής των μορφοκλασμάτων. Για το λόγο αυτό, εξετάζουμε την αρχιτεκτονική βάσει γεωμετρικών, χρηστικών και πολιτισμικών χαρακτηριστικών, ώστε να μπορέσουμε να την κατανοήσουμε ως μορφοκλασματική δομή. H αρχιτεκτονική υλοποιείται με γνώμονα συγκεκριμένες μεταβλητές, τις οποίες ο άνθρωπος δεν μπορεί να υπολογίσει με ακρίβεια, με αποτέλεσμα να μη μπορεί να προβλέψει την επιτυχία του αποτελέσματος.

Στο τελευταίο κεφάλαιο, αναπτύσσεται η θεωρία του Patrick Schumacher περί αυτοποίησης, η οποία αποτελεί τη θεωρητική τεκμηρίωση του έργου του αρχιτεκτονικού γραφείου της Zaha Hadid. Τέλος, γίνεται σύγκριση μεταξύ των παραμετρικών μορφών, όπως τις ορίζει ο ίδιος, και της γενικευμένης αρχιτεκτονικής πραγματικότητας.
Gehrke, Hans-Joachim, Kleine Geschichte der Antike
Creators: name: Stratenwerth, Dietrich
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Gehrke, Hans-Joachim, Kleine Geschichte der Antike. München: Beck 1999. 243 S. m. 124 Abb. (ISBN 3-406-45530-1).
description: Forum Classicum, Nr. 1 (2000): Forum Classicum
Initial data for neutron star binaries with arbitrary spins
Creators: name: Tsatsin, Petr
name: Marronetti, Pedro
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The starting point of any general relativistic numerical simulation is a solution of the Hamiltonian and momentum constraints that (ideally) represents an astrophysically realistic scenario. We present a new method to produce initial data sets for binary neutron stars with arbitrary spins and orbital eccentricities. The method only provides approximate solutions to the constraints. However, we show that the corresponding constraint violations subside after a couple of orbits, becoming comparable to those found in evolutions of standard conformally flat, helically symmetric binary initial data. We evolve in time three data sets, corresponding to binaries with spins aligned, zero and anti-aligned with the orbital angular momentum. These simulations show the orbital "hang-up" effect previously seen in binary black holes. Additionally, all three show orbital eccentricities up to one order of magnitude smaller than those found in helically symmetric initial sets evolutions.
description: Greatly improved version accepted by PRD that introduces a new over-correction mechanism and several high resolutions binary runs, as well as a number of suggestions from the Referees. 16 pages, 28 figures
title: Σύγχρονες μεταφράσεις της ανώνυμης αρχιτεκτονικής στη μεταπολεμική Ελλάδα
Creators: name: Κατραμαδακη Αρετη-Βασιλικη
Publisher: name: Technical University of Crete
Year: 2015

description: Το θέμα της παρούσας ερευνητικής εργασίας είναι οι σύγχρονες μεταφράσεις της ανώνυμης αρχιτεκτονικής, από την μεταπολεμική περίοδο μέχρι και σήμερα στον Ελλαδικό χώρο. Η εργασία δομείται σε δύο ενότητες. Μια εισαγωγική ενότητα που μελετά τα Χωρικά χαρακτηριστικά της ανώνυμης αρχιτεκτονικής και τη βασική ενότητα της που εξετάζει τις Χωρικές μεταφράσεις της ανώνυμης αρχιτεκτονικής. Η δεύτερη ενότητα διακρίνεται σε τρεις  υποενότητες τις:  ταυτο-ποιητικές μεταφράσεις, τις διαλεκτικές μεταφράσεις και τις σύγχρονες μεταφράσεις.
Histories of Aboriginal Education and Schooling in Victoria 1904-1968
Creators: name: Marsden, Beth
Publisher: name: La Trobe
Year: 2022
Subjects: classificationCode: 450107
subject: Aboriginal and Torres Strait Islander history

description: Submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the Department of Archaeology and History, College of Arts, Social Sciences & Commerce, La Trobe University, Victoria, Australia.
Boundary measures, generalized Gauss-Green formulas, and mean value property in metric measure spaces
Creators: name: Marola, Niko
name: Miranda, Michele
name: Shanmugalingam, Nageswari
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We study mean value properties of harmonic functions in metric measure spaces. The metric measure spaces we consider have a doubling measure and support a (1,1)- Poincaré inequality. The notion of harmonicity is based on the Dirichlet form defined in terms of a Cheeger differentiable structure. By studying fine properties of the Green function on balls, we characterize harmonic functions in terms of a mean value property. As a consequence, we obtain a detailed description of Poisson kernels. We shall also obtain a Gauss-Green type formula for sets of finite perimeter which posses a Minkowski content characterization of the perimeter. For the Gauss-Green formula we introduce a suitable notion of the interior normal trace of a regular ball.
Global warming and geothermal profiles: the surface rock-temperature response in South Africa
Creators: name: Tyson, Peter
name: Mason, Simon J.
name: Jones, Mike
name: Cooper, Gordon
Publisher: name: Columbia University
Year: 1998
Subjects: Climatology
Earth temperature
Global warming

description: Southern hemisphere and South African regional air temperature anomalies for the period 1860–1996 are compared to borehole‐derived surface rock‐temperature anomalies to assess the extent to which surface rock temperatures reflect possible global warming in South Africa. The warming of the southern hemisphere since the mid‐nineteenth century is evident in the regional air temperatures for South Africa. Following a temperature increase to a maximum in the 1920s, the climate cooled until strong warming recommenced in the mid 1970s. Highest temperatures have been experienced in the 1990s. Borehole‐derived surface rock temperatures followed a similar pattern, but with a lag of a few decades in the case of the 1920s maximum. The overall warming trend is clearly evident in the rock temperatures. Despite uncertainties in the different data sets, an encouraging degree of agreement exists between the increase in rock temperatures during the twentieth century, the corresponding regional South African air temperature increase and the southern hemisphere counterpart.
title: Κατώφλια περιπλάνησης στο έργο του Walter Benjamin
Creators: name: Σκορδουλη Μαρια
Publisher: name: Technical University of Crete
Year: 2015

description: H παρούσα ερευνητική αναζητά εναλλακτικές διαδρομές για το δημόσιο χώρο και λύσεις σε καθημερινές συλλογικές πρακτικές, χρησιμοποιώντας ως άξονα τη σκέψη του φιλοσόφου Walter Benjamin. Ο ίδιος μεταχειρίζεται το ζήτημα της πόλης διαλεκτικά και αντιμετωπίζει το αστικό περιβάλλον ως κοινωνικά μεταμορφώσιμο και επαναστατικά δυναμικό.
Gravitational radiation from thermal mountains on accreting neutron stars: sources of temperature non-axisymmetry
Creators: name: Hutchins, T. J.
name: Jones, D. I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The spin-distribution of accreting neutron stars in low-mass X-ray binary (LMXB) systems shows a concentration of pulsars well below the Keplarian break-up limit. It has been suggested that their spin frequencies may be limited by the emission of gravitational waves, due to the presence of large-scale asymmetries in the internal temperature profile of the star. These temperature asymmetries have been demonstrated to lead to a non-axisymmetric mass-distribution, or `mountain', that generates gravitational waves at twice the spin frequency. The presence of a toroidal magnetic field in the interior of accreting neutron stars has been shown to introduce such anisotropies in the star's thermal conductivity, by restricting the flow of heat orthogonal to the magnetic field and establishing a non-axisymmetric temperature distribution within the star. We revisit this mechanism, extending the computational domain from (only) the crust to the entire star, incorporating more realistic microphysics, and exploring different choices of outer boundary condition. By allowing a magnetic field to permeate the core of the neutron star, we find that the likely level of temperature asymmetry in the inner crust ($ρ\sim 10^{13}$ g cm$^{-3}$) can be up to 3 orders of magnitude greater than the previous estimate, improving prospects for one day detecting continuous gravitational radiation. We also show that temperature asymmetries sufficiently large to be interesting for gravitational wave emission can be generated in strongly accreting neutron stars if crustal magnetic fields can reach $\sim 10^{12}$ G.
description: 26 pages, 21 figures. Updated to match version accepted by MNRAS (mainly additional discussion)
title: Γεωχημικός χαρακτηρισμός και ανάλυση πετρελαίων με βάση τη σύσταση του ελαφρού κλάσματος (< 210οC )
Creators: name: Κουρμπετη Ιωαννα
Publisher: name: Technical University of Crete
Year: 2016

description: Ο γεωχημικός χαρακτηρισμός του πετρελαίου, με βάση το ελαφρύ κλάσμα, προϋποθέτει την κατανόηση των διεργασιών που λαμβάνουν χώρα κατά την γένεση του πετρελαίου. Κατανοώντας αυτές τις διεργασίες μπορεί να γίνει εντοπισμός των «στοιχείων» που αυτές αφήνουν πίσω τους και τα οποία διαμορφώνουν την σύσταση του πετρελαίου. Με τη χρήση των «στοιχείων» αυτών σε ένα άγνωστο δείγμα πετρελαίου, μπορεί να γίνει η ανασύνθεση της πορείας δημιουργίας του και ο εντοπισμός των γεωχημικών χαρακτηριστικών που θα  βοηθήσουν στον χαρακτηρισμό του, δηλαδή μπορεί να γίνει   προσέγγιση της προέλευση της οργανικής ύλης που το δημιούργησε, του περιβάλλοντος ενταφιασμού της οργανικής ύλης, του χρόνου και της θερμοκρασίας ωρίμανσης καθώς και άλλων χαρακτηριστικών δευτερογενών διεργασιών που τυχόν διεξάχθηκαν μετά την γένεση του πετρελαίου και τροποποίησαν την σύστασή του.
Στην παρούσα διπλωματική εργασία αναπτύχθηκαν οι πιο σύγχρονες θεωρίες γένεσης, προέλευσης και ο μηχανισμός δημιουργίας των ελαφρών Υ/Α, καθώς και οι τεχνικές γεωχημικού χαρακτηρισμού των. Για την εφαρμογή τους χρησιμοποιήθηκαν 139 δείγματα που προέρχονται από την  ιζηματογενή λεκάνη της Αλμπέρτα, του Δυτικού Καναδά, τα οποία αναλύθηκαν με τη χρήση αέριας χρωματογραφίας.
Η μονομεταβλητή ανάλυση των δεδομένων περιλαμβάνει την υλοποίηση και την παρουσίαση των αποτελεσμάτων κάθε γεωχημικού χαρακτηριστικού που μπορεί να προσδιοριστεί από το ελαφρύ κλάσμα, είτε γενετικό, είτε δευτερογενές και κατόπιν εξετάζονται σύμφωνα με τη θεωρία. Οι παραπάνω έλεγχοι πραγματοποιήθηκαν σε περιβάλλον Matlab, με την εφαρμογή ενός νέου κώδικα που δημιουργήθηκε στα πλαίσια της εργασίας.
Η διερευνητική ανάλυση για την εξαγωγή “κρυφών” πληροφοριών που πιθανών υπάρχουν στη βάση δεδομένων των πετρελαϊκών δειγμάτων, πραγματοποιήθηκε με την μέθοδο της  ιεραρχικής συσταδοποίησης. Συγκεκριμένα έγινε χρήση του μέτρου της ευκλείδειας απόστασης για κάθε κριτήριο απόστασης και δημιουργήθηκαν τα αντίστοιχα δενδρογράμματα.
Από την εφαρμογή των μεθοδολογιών που προτάθηκαν  αλλά και την εξονυχιστική μελέτη των αποτελεσμάτων τους, δεν προέκυψαν συμπεράσματα που να οδηγούν σ διαφοροποίηση ανάμεσα στα δείγματα.
Με βάση την εφαρμογή των τεχνικών γεωχημικού χαρακτηρισμού και συνεκτιμώντας τα αποτελέσματα της πολυμεταβλητής ανάλυση των δεδομένων, δεν προέκυψαν  διαφοροποιήσεις ανάμεσα στα δείγματα. Παρόλο που τα υπό μελέτη δείγματα προέρχονται από διαφορετικούς σχηματισμούς εμφανίζουν κοινά χαρακτηριστικά.
THz non-linear optical response in cuprates: predominance of the BCS response over the Higgs mode
Creators: name: Udina, Mattia
name: Fiore, Jacopo
name: Cea, Tommaso
name: Castellani, Claudio
name: Seibold, Goetz
name: Benfatto, Lara
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recent experiments with strong THz fields in unconventional cuprates superconductors have clearly evidenced an increase of the non-linear optical response below the superconducting critical temperature Tc. As in the case of conventional superconductors, a theoretical estimate of the various effects contributing to the non-linear response is needed in order to interpret the experimental findings. Here we report a detailed quantitative analysis of the non-linear THz optical kernel in cuprates within a realistic model, accounting for the band structure and disorder level appropriate for these systems. We show that the BCS quasiparticle response is the dominant contribution for cuprates, and its polarization dependence accounts very well for the third-harmonic generation measurements. On the other hand, the polarization dependence of the THz Kerr effect is only partly captured by our calculations, suggesting the presence of additional effects when the system is probed using light pulses with different central frequencies.
description: Paper selected for "From optical to THz control of materials Faraday Discussion" (23 - 25 May 2022, London, United Kingdom). Link: https://www.rsc.org/events/detail/40608/from-optical-to-thz-control-of-materials-faraday-discussion
Lasing in a ZnO waveguide: clear evidence of polaritonic gain obtained by monitoring the continuous exciton screening
Creators: name: Kreyder, Geoffrey
name: Hermet, Léa
name: Disseix, Pierre
name: Médard, François
name: Mihailovic, Martine
name: Réveret, François
name: Bouchoule, Sophie
name: Deparis, Christiane
name: Zuñiga-Pérez, Jesús
name: Leymarie, Joël
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The stimulated emission of exciton-polaritons was proposed as a means of lowering the lasing threshold because it does not require the dissociation of excitons to obtain an electron-hole plasma, as in a classical semiconductor laser based on population inversion. In this work we propose a method to prove unambiguously the polaritonic nature of lasing by combining experimental measurements with a model accounting for the permittivity change as a function of the carrier density. To do so we use angle resolved photoluminescence to observe the lasing at cryogenic temperature from a polariton mode in a zinc oxide waveguide structure, and to monitor the continuous shift of the polaritonic dispersion towards a photonic dispersion as the optical intensity of the pump is increased (up to 20 times the one at threshold). This shift is reproduced thanks to a model taking into account the reduction of the oscillator strength and the renormalization of the bandgap due to the screening of the electrostatic interaction between electrons and holes. Furthermore, the measurement of the carriers lifetime at optical intensities in the order of those at which the polariton lasing occurs enables us to estimate the carrier density, confirming it is lower than the corresponding Mott density for zinc oxide reported in the literature.
Stability of the massive graviton around a BTZ black hole in three dimensions
Creators: name: Moon, Taeyoon
name: Myung, Yun Soo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the massive graviton stability of the BTZ black hole obtained from three dimensional massive gravities which are classified into the parity-even and parity-odd gravity theories. In the parity-even gravity theory, we perform the $s$-mode stability analysis by using the BTZ black string perturbations, which gives two Schrödinger equations with frequency-dependent potentials. The $s$-mode stability is consistent with the generalized Breitenlohner-Freedman bound for spin-2 field. It seems that for the parity-odd massive gravity theory, the BTZ black hole is stable when the imaginary part of quasinormal frequencies of massive graviton is positive. However, this condition is not consistent with the $s$-mode stability based on the second-order equation obtained after squaring the first-order equation. Finally we explore the black hole stability connection between the parity-odd and parity-even massive gravity theories.
description: 18 pages, title changed, version to appear in GERG