cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characterization of the responses of inferior colliculus neurons of the chicken to electrical stimulation of the cochlear nerve
Creators: name: Neufeld, Peter Richard
Publisher: name: University of British Columbia
Year: 2009

description: Responses of inferior colliculus neurons of the anaesthetized, cochlea-ectomized chicken to electrical stimulation of the cochlear nerves were recorded extracellularly. At least three physiologically distinct cell types were found in the central nucleus of the inferior colliculus. Type 1 fired randomly and with a high spontaneous rate, exhibiting a Poisson distribution in the spike interval histogram. Stimulation of either cochlear nerve produced an inhibition lasting 3 to 46 ms (mean of 16.7, n=16). Type 2 exhibited little or no spontaneous activity, and responded to a short stimulus with a single spike or burst of spikes (n=21). Type 3 exhibited regular, spontaneous firing with preferred intrinsic frequencies in the audio range (n=26), usually resulting in multimodal spike interval histograms. Single pulse stimulation of the contralateral nerve reset the firing rhythm, resulting in periodic post-stimulus time histograms (PSTH). The intermodal interval for a PSTH of a type 3 cell was identical to the intermodal interval for a spontaneous interval histogram. A reverse correlation of a random sequence of stimulus pulses with the response spikes revealed preferred frequencies in the input which were similar to the output frequencies seen in post-stimulus time and interval histograms. Thus, these type 3 neurons exhibited both an oscillatory spontaneous and evoked firing pattern, and an intrinsic frequency selectivity which is presumed to give rise to the observed oscillation. These cells were found to be grouped together in a relatively small portion of the inferior colliculus. The location of several type 3 cells was identified using WGA-HRP injected from the recording electrode. These cells were found to be in the core of the central nucleus of the inferior colliculus. These findings suggest the existence of an intrinsic mechanism for frequency filtering and time coding in the CNS.
Functional Correlation Bounds and Optimal Iterated Moment Bounds for Slowly-mixing Nonuniformly Hyperbolic Maps
Creators: name: Vázquez, Nicholas Fleming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: Consider a nonuniformly hyperbolic map $ T $ modelled by a Young tower with tails of the form $ O(n^{-β}) $, $ β>2 $. We prove optimal moment bounds for Birkhoff sums $ \sum_{i=0}^{n-1}v\circ T^i $ and iterated sums $ \sum_{0\le i5$. Our method of proof is as follows; (i) prove that $ T $ satisfies an abstract functional correlation bound, (ii) use a weak dependence argument to show that the functional correlation bound implies moment estimates. Such iterated moment bounds arise when using rough path theory to prove deterministic homogenisation results. Indeed, by a recent result of Chevyrev, Friz, Korepanov, Melbourne & Zhang we have convergence an Itô diffusion for fast-slow systems of the form \[ x^{(n)}_{k+1}=x_k^{(n)}+n^{-1}a(x_k^{(n)},y_k)+n^{-1/2}b(x_k^{(n)},y_k) , \quad y_{k+1}=T y_k \] in the optimal range $ β>2. $
description: 25 pages. Minor changes. To appear in Communications in Mathematical Physics
New phase in Chern-Simons theory on lens space
Creators: name: Chakraborty, Kushal
name: Dutta, Suvankar
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider $U(N)_k$ Chern-Simons theory on $S^3$ in Seifert framing and write down the partition function as a unitary matrix model. In the large $k$ and large $N$ limit the eigenvalue density satisfies an upper bound $\frac{1}{2πλ}$ where $λ=N/(k+N)$. We study the partition function under saddle point approximation and find that the saddle point equation admits a gapped solution for the eigenvalue density. The on-shell partition function on this solution matches with the partition function in the canonical framing up to a phase. However the eigenvalue density saturates the upper cap at a critical value of $λ$ and ceases to exist beyond that. We find a new phase (called cap-gap phase) in this theory for $λ$ beyond the critical value and see that the on-shell free energy for the cap-gap phase is less than that of the gapped phase. We also check the level-rank duality in the theory and observe that the level-rank dual of the gapped phase is a \emph{capped} phase whereas the cap-gap phase is level-rank dual to itself.
description: 13 pages and 3 figures
Reduction of planar double-box diagram for single-top production via auxiliary mass flow
Creators: name: Basat, Najam ul
name: Li, Zhao
name: Wang, Yefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The single-top production is an important process at the LHC to test the Standard Model (SM) and search for the new physics beyond the SM. Although the complete next-to-next-to-leading order (NNLO) QCD correction to the single-top production is crucial, this calculation is still challenging at present. In order to efficiently reduce the NNLO single-top amplitude, we improve the auxiliary mass flow (AMF) method by introducing the $ε$ truncation. For demonstration we choose one typical planar double-box diagram for the $tW$ production. It is shown that one coefficient of the form factors on its amplitude can be systematically reduced into the linear combination of 198 scalar integrals.
description: 8 pages, 1 figure
Η επίδραση της εφαρμογής σκευασμάτων τοπικής φθορίωσης στη σταθερότητα του χρώματος αισθητικών υλικών με απελευθέρωση φθορίου
Creators: name: Καλαμπαλίκης, Ευθύμιος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Φθόριο
Χρώμα
Αισθητικά υλικά
Fluoride
Color
Αesthetic materials

description: Σκοπός αυτής της ερευνητικής εργασίας είναι να προσδιορισθεί η χρωματική σταθερότητα τριών διαφορετικών εμφρακτικών υλικών που απελευθερώνουν φθόριο κάτω από την επίδραση δύο διαφορετικών σκευασμάτων τοπικής φθορίωσης. Εξετάστηκαν εμπορικά σκευάσματα μιας Υ.Κ. (Ketac Fil Plus Aplicap, 3M ESPE, St.Paul, MN, USA), μιας Ρ.Τ.Υ.Κ. (Fuji II LC Capsules, GC America, Alsip, IL, USA) και ενός giomer (Beautifil II, Shofu Inc., Kyoto, Japan), καθώς και δύο τύποι εμπορικών σκευασμάτων τοπικής φθορίωσης με διαφορετική συγκέντρωση, το Duraphat 5% Sodium Fluoride Varnish (Colgate Oral Pharmaceuticals, 300 Park Avenue New York, NY 10022) με χρόνο εφαρμογής 4 λεπτά και το C-Care (Dental Line Ltd., 92 Kolokotroni str., Piraeus, Greece) ένα σκεύασμα 1,23% APF (acidulated phosphate fluoride) gel με pH 3-4 με χρόνο εφαρμογής 60 δευτερόλεπτα. Σύμφωνα με τα αποτελέσματα των μετρήσεων τα σκευάσματα τοπικής φθορίωσης προκάλεσαν διαφορές του χρώματος στα αισθητικά εμφρακτικά υλικά, οι διαφορές όμως αυτές θεωρούνται κλινικά αποδεκτές επειδή η τιμή της παραμέτρου ΔΕ* ήταν κάτω του 3,3. Τα σκεύασματα τοπικής φθορίωσης που μελετήθηκαν στις πειραματικές συνθήκες της παρούσας διπλωματικής διατριβής μπορούν να χρησιμοποιηθούν με ασφάλεια στα αισθητικά εμφρακτικά υλικά χωρίς να προκαλούν κλινικά σημαντική χρωματική μεταβολή.
description: The purpose of this study was to determine the sensitivity and resistance to discoloration of 3 aesthetic filling materials that release fluoride under the influence of 2 different topical fluoride preparations. The examined restorative materials were: one conventional glass ionomer cement (GIC) (Ketac Fil Plus Aplicap, 3M ESPE, St.Paul, MN, USA), one resin modified glass ionomer cement (Fuji II LC Capsules, GC America, Alsip, IL, USA) and one giomer (Beautifil II, Shofu Inc., Kyoto, Japan), as well as two types of commercial preparations of topical fluoride with different concentrations: Duraphat 5% Sodium Fluoride Varnish (Colgate Oral Pharmaceuticals, 300 Park Avenue New York, NY 10022) with an application time of 4 minutes and C-Care (Dental Line Ltd., 92 Kolokotroni str., Piraeus, Greece) a 1,23% APF (acidulated phosphate fluoride) gel with pH 3-4 with an application time of 60 seconds. According to the results of the measurements the preparations of topical fluoride caused changes of color properties in the aesthetic filling materials, but these changes were clinically acceptable because the value of the parameter ΔΕ* was below 3.3. The preparations of topical fluoride studied in this thesis can be safely used without causing clinically significant color changes of aesthetic filling materials.
Θεωρία δικαίου και κράτους στο έργο του Carl Schmitt
Creators: name: Χατζηιωαννίδου, Δέσποινα Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Πολιτικό
Κυρίαρχος
Νομιμοποίηση
Political
Sovereign
Legitimacy

description: Κεντρική ιδέα στο έργο του Carl Schmitt αποτελεί η ανάγκη μετάβασης από το αστικό, αδύναμο κατά τον ίδιο, κράτος του 20 αιώνα σε ένα ισχυρό – ολοκληρωτικό κράτος, το οποίο απαλλαγμένο από τα βαρίδια του διαβρωτικού πλουραλισμού και του κοινοβουλευτισμού θα μπορεί να εκπληρώσει τον ιστορικό του ρόλο, που δεν είναι άλλος από την ανοιχτή και αποφασιστική σύγκρουση με τον αντίπαλο. Σε αυτό το πλαίσιο ο Schmitt διατυπώνει τους ορισμούς του για «τον Φίλο και τον Εχθρό», «το Πολιτικό», «τον Κυρίαρχο», «τον πόλεμο της απόλυτης εχθρότητας», «τον Αντάρτη», «τον ενδιαφερόμενο Τρίτο» και «την κατάσταση έκτατης ανάγκης», η κατανόηση των οποίων αποτελεί προϋπόθεση για την μελέτη του έργου του. Επίσης, ιδιαίτερο ενδιαφέρον παρουσιάζει η ανάλυση του σχετικά με την «νομιμότητα» και την «νομιμοποίηση», καθιστώντας την δεύτερη ως απαραίτητο στοιχείο προκειμένου να επιτευχθεί η παραμονή στη σφαίρα του Πολιτικού, ενώ το περιεχόμενο που δίνει στο νέο είδος νομικής σκέψης, την οποία αποκαλεί «νομική σκέψη της συγκεκριμένης τάξης και μορφοποίησης», ανταποκρίνεται πλήρως στα ιδιαίτερα χαρακτηριστικά και στις ανάγκες του ισχυρού-ολοκληρωτικού κράτους που οραματίζεται.
description: The central idea in the work of Carl Schmitt is the need of transition from the bourgeois, and according to him weak, state of the 20th century to a powerful - totalitarian state that, free from the burdens of parliamentarism and corrosive pluralism, will be able to accomplish its historic mission which is none other than the open and decisive clash with the adversary. In this context Schmitt formulates the definitions of his notions of “the Friend and the Enemy”, “the Political”, “the Sovereign”, “the War of Absolute Enmity”, “the Partisan”, “the Interested Third Party” and “the State of Emergency”, the comprehension of which is a prerequisite to the study of his work. Also of particular interest is his analysis of the notions of “legality” and “legitimacy”, regarding the second as essential in order to stay within the sphere of the Political, while the content that he gives to the new type of juristic thought, which he calls “juristic thought of concrete order and formation”, corresponds fully to the particular characteristics and needs of the powerful – totalitarian state that he envisions.
From semiotics of hypermedia to physics of semiosis: A view from system theory
Creators: name: Kryssanov, V. V.
name: Kakusho, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computation and Language (cs.CL)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Given that theoretical analysis and empirical validation is fundamental to any model, whether conceptual or formal, it is surprising that these two tools of scientific discovery are so often ignored in the contemporary studies of communication. In this paper, we pursued the ideas of a) correcting and expanding the modeling approaches of linguistics, which are otherwise inapplicable (more precisely, which should not but are widely applied), to the general case of hypermedia-based communication, and b) developing techniques for empirical validation of semiotic models, which are nowadays routinely used to explore (in fact, to conjecture about) internal mechanisms of complex systems, yet on a purely speculative basis. This study thus offers two experimentally tested substantive contributions: the formal representation of communication as the mutually-orienting behavior of coupled autonomous systems, and the mathematical interpretation of the semiosis of communication, which together offer a concrete and parsimonious understanding of diverse communication phenomena.
description: 46 pages, 5 figures; 2003 preprint
GeV emission in the region of the supernova remnant G51.26+0.11
Creators: name: Araya, Miguel
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The supernova remnant (SNR) G51.26+0.11 was recently discovered and little is known about its properties and environment. Using data from the \emph{Fermi} Large Area Telescope we study the GeV emission seen in the direction of G51.26+0.11 to constrain the origin of the gamma rays and their possible relation to this SNR or to a star-forming region. We also search for emission from molecular gas in the region that could provide dense material for the production of gamma rays. By modeling the multi-wavelength spectrum of G51.26+0.11 from radio to gamma rays we derive the properties of the particle populations that could produce the emission in several possible scenarios. We rule out the star-forming regions (such as G051.010+00.060) seen nearby as the origin of the GeV emission. The correspondence seen between the gamma-ray and radio morphologies support a scenario where G51.26+0.11 is the cause of the gamma rays. The flat spectral energy distribution observed at GeV energies is best fit by hadronic or inverse Compton emission, while a bremsstrahlung model cannot properly account for the radio fluxes under a simple one-zone scenario. A pulsar wind nebula origin of the high-energy photons cannot be ruled out or confirmed.
description: 14 pages, 4 figures. Accepted in ApJ
Scaling Limits of Planar Symplectic Ensembles
Creators: name: Akemann, Gernot
name: Byun, Sung-Soo
name: Kang, Nam-Gyu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider various asymptotic scaling limits $N\to\infty$ for the $2N$ complex eigenvalues of non-Hermitian random matrices in the symmetry class of the symplectic Ginibre ensemble. These are known to be integrable, forming Pfaffian point processes, and we obtain limiting expressions for the corresponding kernel for different potentials. The first part is devoted to the symplectic Ginibre ensemble with the Gaussian potential. We obtain the asymptotic at the edge of the spectrum in the vicinity of the real line. The unifying form of the kernel allows us to make contact with the bulk scaling along the real line and with the edge scaling away from the real line, where we recover the known determinantal process of the complex Ginibre ensemble. Part two covers ensembles of Mittag-Leffler type with a singularity at the origin. For potentials $Q(ζ)=|ζ|^{2λ}-(2c/N)\log|ζ|$, with $λ>0$ and $c>-1$, the limiting kernel obeys a linear differential equation of fractional order $1/λ$ at the origin. For integer $m=1/λ$ it can be solved in terms of Mittag-Leffler functions. In the last part, we derive Ward's equation for planar symplectic ensembles for a general class of potentials. It serves as a tool to investigate the Gaussian and singular Mittag-Leffler universality class. This allows us to determine the functional form of all possible limiting kernels (if they exist) that are translation invariant, up to their integration domain.
KI im Mittelstand - Chancen erkennen, Herausforderungen meistern
Creators: name: Krooß, Alexander
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2023
Subjects: KI
KMU
Change-Management

description: Künstliche Intelligenz (KI) ist in den letzten Jahren zu einem der Topthemen in einer Vielzahl an Foren, Zeitungsartikeln, Expertenrunden und in der Wirtschaft geworden. Sie wird von der Deutschen Bundesregierung als die wesentliche Schlüsseltechnologie der wirtschaftlichen Leistungsfähigkeit des Landes gesehen und gefördert. Beim Einsatz von KI-Anwendungen sind aber vor allem kleine und mittelständische Unternehmen (KMU) noch eher zurückhaltend. Was ist KI? Der Begriff KI stellt einen Sammelbegriff für Technologien und Systeme dar, die menschenähnliche Intelligenz simulieren oder nachahmen können. KI-Ansätze basieren auf Algorithmen und Techniken, die es den Computern ermöglichen, Daten zu verarbeiten, Muster zu erkennen, zu lernen und selbständige Entscheidungen zu treffen. Der große Unterschied zu herkömmlichen Methoden liegt darin, dass die verwendeten Modelle nicht auf vordefinierten Regeln oder statischen Algorithmen basieren, sondern selbständig aus Daten lernen können. Dies ermöglicht es ihnen sich an neue Situationen anzupassen und komplexe Probleme zu lösen, die mit klassischer Programmierung nicht oder nur näherungsweise gelöst werden können.
Ψηφιακή Επεξεργασία Εικόνας στο MATLAB
Creators: name: Κόρδα, Θάλεια Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: MATLAB
Επεξεργασία εικόνας
Γραφικά
Τρισδιάστατα γραφικά
Image Processing Toolbox
Θόλωση εικόνας
Θόρυβος εικόνας
Εφέ εικόνας
Image processing
Graphics
Three-dimensional graphics
Blurred picture
Image noise
Image effects

description: Ο σκοπός της παρούσας εργασίας είναι η επεξεργασία εικόνων με την βοήθεια και τη χρήση του προγράμματος MATLAB. Αρχικά σημειώνεται μια γενική αναφορά στο προγραμματιστικό περιβάλλον του MATLAB , καθώς επίσης και σε λειτουργίες και εφαρμογές του. Στη συνέχεια γίνεται η επεξεργασία εικόνων οι οποίες έχουν θόρυβο και θόλωση. Ακολούθησαν εφαρμογές πάνω σε φωτογραφίες με τρόπους επίλυσης των προβλημάτων της θόλωσης και του θορύβου. Τέλος, πραγματοποιήθηκε μια αναφορά και ανάλυση σε φωτογραφίες για τις οποίες υπάρχει δυνατότητα επεξεργασίας και προσθήκης εφέ. Το ενδιαφέρον σε αυτό το κομμάτι της εργασίας είναι ότι μελετούνται τρόποι χρήσης του MATLAB αντί του Photoshop το οποίο είναι καθιερωμένο πρόγραμμα για προσθήκη εφέ σε εικόνες.
description: The purpose of this paper is the processing of images with the help of using the program MATLAB. Originally made a general reference to the programming environment of MATLAB, as well as functions and applications. Then, an image processing which are noise and blur. Followed applications on photos with ways to solve the problems of blurring and noise. Finally, there was a report and analysis of images for which an editable and adding effects. The interest in this piece of work is that we study ways to use MATLAB instead of Photoshop which is a standard program to add effects to images.
Automatic Breast Lesion Detection in Ultrafast DCE-MRI Using Deep Learning
Creators: name: Ayatollahi, Fazael
name: Shokouhi, Shahriar B.
name: Mann, Ritse M.
name: Teuwen, Jonas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Purpose: We propose a deep learning-based computer-aided detection (CADe) method to detect breast lesions in ultrafast DCE-MRI sequences. This method uses both the three-dimensional spatial information and temporal information obtained from the early-phase of the dynamic acquisition. Methods: The proposed CADe method, based on a modified 3D RetinaNet model, operates on ultrafast T1 weighted sequences, which are preprocessed for motion compensation, temporal normalization, and are cropped before passing into the model. The model is optimized to enable the detection of relatively small breast lesions in a screening setting, focusing on detection of lesions that are harder to differentiate from confounding structures inside the breast. Results: The method was developed based on a dataset consisting of 489 ultrafast MRI studies obtained from 462 patients containing a total of 572 lesions (365 malignant, 207 benign) and achieved a detection rate, sensitivity, and detection rate of benign lesions of 0.90 (0.876-0.934), 0.95 (0.934-0.980), and 0.81 (0.751-0.871) at 4 false positives per normal breast with 10-fold cross-testing, respectively. Conclusions: The deep learning architecture used for the proposed CADe application can efficiently detect benign and malignant lesions on ultrafast DCE-MRI. Furthermore, utilizing the less visible hard-to detect-lesions in training improves the learning process and, subsequently, detection of malignant breast lesions.
«Η Πλοήγηση » στο ναυτικό Δίκαιο»
Creators: name: Αλεξανδρή, Χριστίνα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Πλοήγηση
Πλοίο
Navigation
Ship

description: Σκοπός της διπλωματικής εργασίας είναι η παρουσίαση της έννοιας και του ρόλου του πλοηγού στη ναυτιλιακή επιχείρηση. Έγινε αναφορά στις διακρίσεις των πλοηγών που υπάρχουν σήμερα, στο νομοθετικό καθεστώς που διέπει την πλοήγηση καθώς και τον τρόπο διορισμού τους. Στη συνέχεια, αναλύθηκαν τα στάδια σύναψης της σύμβασης πλοήγησης μεταξύ του πλοηγού και του πλοιάρχου καθώς και οι υποχρεώσεις και τα δικαιώματα που απορρέουν και για τις δύο πλευρές από τη σύμβαση. Τέλος, θίξαμε το ζήτημα της ευθύνης του πλοηγού για ζημίες που θα προκληθούν κατά τη διάρκεια της παροχής των υπηρεσιών του.
description: The aim of this thesis is to present the meaning and the role of the navigator in the maritime business. We referred to the discrimination of navigators that exist nowadays, the legal status applying to the navigation as well as the way they are appointed. In addition, we analyzed the stages of the contract signing between the navigator and the captain as well as the obligations and the rights of both sides. At the end, we examined the navigator’s responsibility for damages caused during his services.
Eντοπισμός εξωκείμενων αντικειμένων σε ροές δεδομένων
Creators: name: Γεωργιάδης, Δημήτριος Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: εξωκείμενο
ροή
εντοπισμός
outlier
stream
detection

description: ο εντοπισμός εξωκείμενων αντικειμένων (outliers) σε ροές δεδομένων αναφέρεται στην διαδικασία εύρεσης των αντικειμένων που διαφέρουν σημαντικά ως προς κάποια κριτήρια από τα υπόλοιπα αντικείμενα του συνόλου. η διπλωματική αυτή εργασία αποτελείται από τα ακόλουθα μέρη. αρχικά, περιγράφονται και αναλύονται γνωστοί αλγόριθμοι, όπως οι exactstorm, abstract-c, cod, mcod και loci. έπειτα περιγράφονται αναλυτικά τα χαρακτηριστικά και η αρχιτεκτονική του λογισμικού, ανοιχτού κώδικα, μοα, καθώς και οι επεκτάσεις που πραγματοποιήθηκαν προκειμένου να υποστηριχθεί ο εντοπισμός εξωκείμενων αντικειμένων και να δημιουγηθεί ένα framework για την ανάπτυξη νέων αλγορίθμων. βάσει αυτού του framework αναπτύχθηκαν στα πλαίσια της εργασίας αυτής οι αλγόριθμοι exactstorm, abstract-c, cod, mcod και loci. τέλος, αναπτύχθηκε ένας καινούργιος αλγόριθμος streamingloci ως μια βελτιωμένη έκδοση και επέκταση του απλού αλγορίθμου loci και στη συνέχεια πραγματοποιήθηκε σύγκριση των αλγορίθμων αυτών.
description: detecting outliers in data streams is a data mining task, which refers to the process of finding stream objects that differ significantly from all other stream objects. this thesis consists of several parts. firstly, state-of-the-art algorithms, such as exactstorm, abstract-c, cod, mcod and loci, are described. secondly, the open-source data mining tool moa is introduced. the main features and architecture of moa are briefly described as well as the integrated extensions in moa that aim to support stream outlier detection functionalities and to provide a framework to build new algorithms. the algorithms exactstorm, abstract-c, cod, mcod and a naive streaming version of loci (naiveloci) have all been implemented upon the extended moa framework. finally, a new algorithm, named streamingloci, is proposed as a streaming version of the algorithm loci, which outperforms naiveloci. additionally, the implementation of streamingloci is described in detail and the evaluation test results of the algorithm are listed.
Οι τεχνολογίες της πληροφορίας και της επικοινωνίας στην εκπαίδευση
Creators: name: Στράτσιου, Ανδρονίκη Πασχάλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: ΤΠΕ στην εκπαίδευση
ΤΠΕ στη διδασκαλία της ιστορίας
Αξιολόγηση και ανάλυση εκπαιδευτικού λογισμικού
ICTs in education
ICTs in history language teaching
Evaluation and analysis of educational software

description: Η παρούσα εργασία εντάσσεται στο πλαίσιο των εργασιών με αντικείμενο τις προδιαγραφές της διδασκαλίας, εν γένει, και συγκεκριμένα τις «Τεχνολογίες της Πληροφορίας και της Επικοινωνίας στην Εκπαίδευση» (ΤΠΕ). Σκοπός της παρούσας εργασίας είναι η ανάλυση και η αξιολόγηση του εκπαιδευτικού λογισμικού «Ιστορία στο Διαδίκτυο α΄-β΄-γ΄ Γυμνασίου» το οποίο, όντας εγκεκριμένο και πιστοποιημένο από το Παιδαγωγικό Ινστιτούτο, λειτουργεί ως υποστηρικτικό υλικό του μαθήματος της Ιστορίας στο Γυμνάσιο. Το λογισμικό αυτό αξιολόγησα και ανέλυσα από Τεχνολογική και Τεχνική, Ψυχολογική και Παιδαγωγική και τέλος από Ιστορικοδιδακτική διάσταση. Από τις αναλύσεις προκύπτει πως το εν λόγω λογισμικό είναι φιλικό και εύχρηστο προς το/τη χρήστη/τρια, διαθέτει μη υψηλής ποιότητας πολυμεσικά στοιχεία, είναι ένα πρόγραμμα εξατομικευμένης διδασκαλίας και τα περιεχόμενά του ακολουθώντας τη γραμμική παρουσίαση των ιστορικών γεγονότων, επιχειρούν να καλλιεργήσουν την εθνική ταυτότητα στους/ις αποδέκτες/τριές του.
description: This paper is part of the research on the standards of teaching, and specifically on those concerning "Information and Communication Technologies in Education" (ICT). The main purpose of this paper is the analysis and evaluation of the educational software "History on the Internet of 1st,2nd and 3rd grades of Greek secondary school" which, has been approved and certified by the Pedagogical Institute and acts as supporting material to the course of History at secondary school. In my research, I evaluated and analyzed three dimensions of the educational software concerning Technology and Graphics, Pedagogy and Psychology and the Methodology of Teaching History. The analyses indicated that the software is user-friendly but it does not have high quality technological characteristics and graphics. Moreover, the software facilitates individualized learning and its contents, which are presented as a linear chronological order of historical events, foster the creation of the national identity by his/her users.
Eigenvalues of the Laplacian under the Ricci Flow
Creators: name: Di Cerbo, Luca Fabrizio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53C21; 58J50; 53C44

description: We derive, under a technical assumption, the first variation formula for the eigenvalues of the Laplacian on a closed manifold evolving by the Ricci flow and give some applications.
description: 13 pages
Comparative high-resolution spectroscopy of M dwarfs - exploring non-LTE effects
Creators: name: Olander, Terese
name: Heiter, Ulrike
name: Kochukhov, Oleg
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence
M dwarfs
High-resolution spectroscopy
Non-LTE effects

description: In the search for exoplanets M dwarfs are attractive targets. To be able to assess the habitability of planets around M dwarfs, the atmospheric parameters of the host star need to be accurately determined as well as abundances of individual chemical elements. Recent advances in high-resolution spectroscopy in the near-infrared have opened up the possibility to greatly improve the analysis of M dwarfs. The method of fitting the observed high-resolution spectra with synthetic spectra has recently been applied by Lindgren et al. (2016, 2017) and Passegger et al. (2018, 2019) using different instruments and theoretical approaches. We present a comparison of stellar parameters derived by Lindgren et al. and Passegger et al. for 11 different stars in common between the two studies. The derived effective temperature values agree within uncertainties for most of the stars while the surface gravity and metallicity show a larger spread and for half of the stars the differences are larger than the given uncertainties. We investigate the reasons for the diverging results by comparing synthetic spectra generated for the derived parameters with observed spectra. We present an assessment of non-LTE effects in the parameter range of M dwarfs for K and Fe. We demonstrate that non-LTE effects are negligible for Fe I in M-dwarf atmospheres but are important for K I, which has a number of strong lines in near-infrared spectra of these stars. These effects, leading to potassium abundance and metallicity corrections on the order of 0.2 dex, may be responsible for some of the discrepancies in the published analyses. The aim is to validate and improve the method of fitting synthetic spectra to observed spectra for M dwarfs.
description: {"references": ["Passegger, Vera et al. (2018). arXiv:1802.02946", "Passegger, Vera et al. (2019). arXiv:1907.00807", "Rajpurohit, A. S. et al. (2018). arXiv:1810.13252"]}
The weak-line T Tauri star V410 Tau in the eyes of SPIRou and TESS
Creators: name: Finociety, Benjamin
name: Donati, Jean-François
name: Klein, Baptiste
Publisher: name: Zenodo
Year: 2021
Subjects: Young stars
Zeeman-Doppler Imaging
Stars: individual: V410 Tau

description: This poster presents new results derived from spectropolarimetric and photometric observations of the young weak line T Tauri star V410 Tau, collected respectively with the new near-infrared spectropolarimeter SPIRou at CFHT, and with the TESS space probe. For the first time, we combined high-resolution spectropolarimetry and high-precision photometry with Zeeman-Doppler Imaging, in order to reconstruct maps of the photospheric brightness and of the large-scale magnetic field at the surface of V410 Tau. Our results reveal a complex magnetic field, consistent with previous studies, and a high level of stellar activity. Our study also illustrates the benefits of near-infrared (vs optical) observations, to investigate the magnetic topologies of young stars and look for the potential presence of massive planets on close-in orbits through radial velocity measurements.
description: {"references": ["Brown S. F., Donati J. F., Rees D. E., Semel M., 1991, A&A, 250, 463", "Donati J. F., Brown S. F., 1997, A&A, 326, 1135", "Donati J.-F., Semel M., Carter B. D., Rees D. E., Collier Cameron A., 1997, MNRAS, 291", "Donati J. F., et al., 2006, MNRAS, 370, 629", "Haywood R. D., et al., 2014, MNRAS, 443, 2517", "Semel M., 1989, A&A, 225, 456", "Yu L., et al., 2019, MNRAS, 489, 5556"]}
Accretion efficiency and mass transfer in two binary star systems
Creators: name: Boneva, Daniela
name: Yankova, Krasimira
Publisher: name: Zenodo
Year: 2021

description: We analyze the accretion properties of two binary star systems: the BY Draconis type variable V1803 Cyg, which is an A component of the binary system 61Cyg and the semi-regular (SR) symbiotic variable NQ Gem. In this aim, we estimate an accretion efficiency in these binaries, based on the relation between luminosity and rate of accretion. We give an appraisal on the currently active mass transfer mechanism between the components in the binaries. This could be relevant to the type of accretion, wind or disc is dominant for each of the objects. A feasible contribution of the accretion rate to the objects’ activity states, as an effect on the luminosity variations is considered. An X-ray variability of NQ Gem in the range of 0.3 – 10keV, with a maximum count rates activity mostly in the hard band part of the energy spectrum, is detected. We compare the results for both objects, according to the features of their different stellar types.
J/psi absorption by nucleons in the meson-exchange model
Creators: name: Oh, Yongseok
name: Liu, Wei
name: Ko, C. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We reinvestigate the $J/ψ$ dissociation processes induced by the reactions with nucleons, $J/ψ+ N \to \bar{D}^{(*)} + Λ_c$, in the meson-exchange model. Main constraints used in this work are vector-meson dominance and charm vector-current conservation. We show that the cross section for $J/ψ+ N \to \bar{D} + Λ_c$ can be larger than that for $J/ψ+ N \to \bar{D}^{*} + Λ_c$ when these constraints are imposed. The dependence of the cross sections on the coupling constants is analyzed in detail, and the comparison with the recent quark-interchange model predictions is also made.
description: 7 pages, 4 figures, REVTeX, a reference added, to appear in Phys. Rev. C
A periodically active pulsar giving insight into magnetospheric physics
Creators: name: Kramer, M.
name: Lyne, A. G.
name: O'Brien, J. T.
name: Jordan, C. A.
name: Lorimer, D. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: PSR B1931+24 (J1933+2421) behaves as an ordinary isolated radio pulsar during active phases that are 5-10 days long. However, the radio emission switches off in less than 10 seconds and remains undetectable for the next 25-35 days, then it switches on again. This pattern repeats quasi-periodically. The origin of this behaviour is unclear. Even more remarkably, the pulsar rotation slows down 50% faster when it is on than when it is off. This indicates a massive increase in magnetospheric currents when the pulsar switches on, proving that pulsar wind plays a substantial role in pulsar spin-down. This allows us, for the first time, to estimate the currents in a pulsar magnetospheric during the occurrence of radio emission.
description: 12 pages, 2 figures
Orbital Evolution of Algol Binaries with a Circumbinary Disk
Creators: name: Chen, Wen-Cong
name: Li, Xiang-Dong
name: Qian, Sheng-Bang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is generally thought that conservative mass transfer in Algol binaries causes their orbits to be wider, in which the less massive star overflows its Roche-lobe. The observed decrease in the orbital periods of some Algol binaries suggests orbital angular momentum loss during the binary evolution, and the magnetic braking mechanism is often invoked to explain the observed orbital shrinkage. Here we suggest an alternative explanation, assuming that a small fraction of the transferred mass forms a circumbinary disk, which extracts orbital angular momentum from the binary through tidal torques. We also perform numerical calculations of the evolution of Algol binaries with typical initial masses and orbital periods. The results indicate that, for reasonable input parameters, the circumbinary disk can significantly influence the orbital evolution, and cause the orbit to shrink on a sufficiently long timescale. Rapid mass transfer in Algol binaries with low mass ratios can also be accounted for in this scenario.
description: 9 pages, 5 figures, accepted for publication in ApJ
Formation of antihydrogen in antiproton - positron collision
Creators: name: Roy, S.
name: Deb, S. Ghosh
name: Sinha, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A quantum mechanical approach is proposed for the formation of antihydrogen in the ground and excited states (2s, 2p) via the mechanism of three body recombination (TBR) inside a trapped plasma of anti proton and positron or in the collision between the two beams of them. Variations of the differential (DCS) as well as the total (TCS) formation cross sections are studied as a function of the incident energies of both the active and the spectator positrons. Significantly large cross sections are found at very low incident energies in the TBR process as compared to other processes leading to antihydrogen. The present formation cross section decreases with increasing positron energy (temperature) but no simple power law could be predicted for it covering the entire energy range, corroborating the experimental findings qualitatively. The formation cross sections are found to be much higher for unequal energies of the two positrons than for equal energies, as expected physically.
description: 14 pages, 13 figures
Formal Global Perturbative Quantization of the Rozansky-Witten Model in the BV-BFV Formalism
Creators: name: Moshayedi, Nima
name: Saccardo, Davide
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81T20, 57R56, 81T70, 53D05, 53D50, 32Q15,

description: We describe a globalization construction for the Rozansky-Witten model in the BV-BFV formalism for a source manifold with and without boundary in the classical and quantum case. After having introduced the necessary background, we define an AKSZ sigma model, which, upon globalization through notions of formal geometry extended appropriately to our case, is shown to reduce to the Rozansky-Witten model. The relations with other relevant constructions in the literature are discussed. Moreover, we split the model as a $BF$-like theory and we construct a perturbative quantization of the model in the quantum BV-BFV framework. In this context, we are able to prove the modified differential Quantum Master Equation and the flatness of the quantum Grothendieck BFV operator. Additionally, we provide a construction of the BFV boundary operator in some cases.
description: 80 pages, 20 figures. Substantially revised version. We have corrected several things, including small conceptual mistakes and typos. A much shorter version of the manuscript has been accepted for publication. We leave the longer version on arXiv such that the paper is self-contained. All results of the published version are presented in here
Quantitative two-dimensional shadowgraphic set-up for high-sensitivity measurement of low-density laser-plasmas
Creators: name: Gopal, Amrutha
name: Minardi, Stefano
name: Tatarakis, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a quantitative shadowgraphic method which can measure the density of a laser-generated plasma in air with sensitivity and resolution comparable or better than traditional interferometric techniques. Simultaneous comparison of both shadowgraphy and interferometry has been carried out allowing the experimental evaluation of the reliability of the shadowgraphic method.
Positivity for the clamped plate equation under high tension
Creators: name: Eichmann, Sascha
name: Schätzle, Reiner M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B09 (Primary) 35B30, 35B50, 35J40 (Secondary)

description: In this article we consider positivity issues for the clamped plate equation with high tension $γ>0$. This equation is given by $Δ^2u - γΔu=f$ under clamped boundary conditions. Here we show, that given a positive $f$, i.e. upwards pushing, we find a $γ_0>0$ such that for all $γ\geq γ_0$ the bending $u$ is indeed positive. This $γ_0$ only depends on the domain and the ratio of the $L^1$ and $L^\infty$ norm of $f$. In contrast to a recent result by Cassani&Tarsia, our approach is valid in all dimensions.
description: Keywords: Bi-laplace equation, maximum principle, high tension
Moduli and (un)attractor black hole thermodynamics
Creators: name: Astefanesei, Dumitru
name: Goldstein, Kevin
name: Mahapatra, Swapna
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate four-dimensional spherically symmetric black hole solutions in gravity theories with massless, neutral scalars non-minimally coupled to gauge fields. In the non-extremal case, we explicitly show that, under the variation of the moduli, the scalar charges appear in the first law of black hole thermodynamics. In the extremal limit, the near horizon geometry is $AdS_2\times S^2$ and the entropy does not depend on the values of moduli at infinity. We discuss the attractor behaviour by using Sen's entropy function formalism as well as the effective potential approach and their relation with the results previously obtained through special geometry method. We also argue that the attractor mechanism is at the basis of the matching between the microscopic and macroscopic entropies for the extremal non-BPS Kaluza-Klein black hole.
description: 36 pages, no figures, V2: minor changes, misprints corrected, expanded references; V3: sections 4.3 and 4.5 added; V4: minor changes, matches the published version
Additional file 2 of Achieving the “Ending the HIV Epidemic in the U.S.” incidence reduction goals among at-risk populations in the South
Creators: name: Hamilton, Deven T.
name: Hoover, Karen W.
name: Smith, Dawn K.
name: Delaney, Kevin P.
name: Wang, Li Yan
name: Li, Jingjing
name: Hoyte, Tamika
name: Jenness, Samuel M.
name: Goodreau, Steven M.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Statistics
subject: FOS: Mathematics
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2: Supplemental figures.
Connection between the Long Secondary Period phenomenon and the red giant evolution
Creators: name: Pawlak, Michał
Publisher: name: Zenodo
Year: 2021
Subjects: Post main sequence cool stars

description: The mechanism behind the Long Secondary Period (LSP) observed in pulsating red giants still remains unknown. In this work, I investigate the connection between the Red Giant Branch and Asymptotic Giant Branch evolution and the appearance of the LSP - the phenomenon observed in a large fraction the red giants I use the OGLE-III sample of the OSARG variables in the Large Magellanic Cloud.
 I construct the density maps in the period-luminosity as well as color-magnitude planes for the stars showing LSP and compare them to the remaining giants. I also fit the spectral energy distribution to test whether an additional source of reddening is present in the LSP stars. I post a hypothesis that the LSP phenomenon may be related to a transition between the different pulsation period-luminosity sequences. I also show that an overabundance of the stars showing Long Period Variables can be observed around the
 Tip of the Red Giant Branch, and much more prominently, at the upper part of the Asymptotic Giant Branch. The main over-density region appears to be slightly fainter and redder than the bulk of the Asymptotic Giant Branch. It also seems to correspond to the area of the Hertzsprung–Russell diagram where stable winds and high mass loss are present. The LSP can possibly be a recurring phenomenon appearing and disappearing in various points of the red giant evolution. The LSP stars appear to be more reddened than other giants, which suggests the intrinsic nature of the reddening, likely related to large dust emission.
 The analysis seems to confirms the hypothesis that there is a relation between the mass loss due to the presence of strong stellar wind and the appearance of LSP.
The woman's film, the new women's cinema, and the women's buddy film
Creators: name: Nash, Melanie Leigh
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines the way in which the representation of women’s friendship in Hollywood cinema is ideologically constructed: first in the classical era of the woman’s film; second, in the 1970s renaissance of the woman’s film as a genre, known as the “new women’s cinema”; and third, in a very recent group of films of the late 1980s and early 1990s that can be thought of as a generic hybrid of the woman’s film and the male buddy film of the 1970s. Each of these three periods is marked by unique characteristics relating to the way in which female friendship is figured; and certainly there has been an advance in the variety of women’s roles generally, and of depictions of female friendship specifically, in Hollywood over this sixty year period. And yet there has not been a great deal of change in the degree to which patriarchal discourses--in relation to concepts such as marriage, family, home and career-- delineate the scope and meaning of these representations of women’s friendships in accordance with dominant ideology. This thesis traces an increased ideological openness or ambiguity across time; but a coherent feminist discourse does not emerge in Hollywood’s depiction of women friends either in tandem with the women’s movement of the 1970s, or in our contemporary cinema’s female buddy films. What has changed is the socio political climate in which such films are received, rather than simply the films themselves. The first chapter outlines the depiction of friendship between women in the two historical eras in question, pointing to the degree of change in the woman’s film from the 1930s and 1940s to the 1970s. In the second chapter, I examine Robin Wood’s schemata of the male buddy film of the early 1970s, and evaluate his notion of this generic cycle’s ideological progressiveness. The third chapter applies Wood’s model of male buddy films to three female buddy films of the 1990s: Thelma and Louise, Fried Green Tomatoes, and Leaving NormaL The fourth chapter proposes the concept of a “backlash” buddy film through a sustained textual analysis of Single White Female. And in the fifth and final chapter, I return to theoretical problems of establishing textual meaning in popular film that have been raised by each of the preceding chapters.