cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
TCEP: Transitions in Operator Placement to Adapt to Dynamic Network Environments
Creators: name: Luthra, Manisha
name: Koldehofe, Boris
name: Danger, Niels
name: Weisenburger, Pascal
name: Salvaneschi, Guido
name: Stavrakakis, Ioannis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Distributed Complex Event Processing (DCEP) is a commonly used paradigm to detect and act on situational changes of many applications, including the Internet of Things (IoT). DCEP achieves this using a simple specification of analytical tasks on data streams called operators and their distributed execution on a set of infrastructure. The adaptivity of DCEP to the dynamics of IoT applications is essential and very challenging in the face of changing demands concerning Quality of Service. In our previous work, we addressed this issue by enabling transitions, which allow for the adaptive use of multiple operator placement mechanisms. In this article, we extend the transition methodology by optimizing the costs of transition and analyzing the behaviour using multiple operator placement mechanisms. Furthermore, we provide an extensive evaluation on the costs of transition imposed by operator migrations and learning, as it can inflict overhead on the performance if operated uncoordinatedly.
description: Accepted for publication in Journal of Computer and System Sciences, Special Issue on Algorithmic Theory of Dynamic Networks and its Application
Stock price prediction with LSTM ensembles
Creators: name: Μπράχο, Φαμπιόλα Αλέκο (Braho, Fabjola)
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Πρόβλεψη τιμών μετοχών
Νευρωνικά δίκτυα
Συνδυαστικά μοντέλα μηχανικής μάθησης
Stock Price Prediction
LSTM
Ensembles
Long Short Term Memory

description: Σκοπός της παρούσας εργασίας είναι η διερεύνηση της αποτελεσματικότητας των συνδυαστικών δικτύων μακράς βραχυπρόθεσμης μνήμης που εκπαιδεύονται από την αναδρομική προώθηση του χρόνου για την πρόβλεψη των τιμών των μετοχών. Μια σειρά διαφορετικών μεθόδων συνδυαστικών μοντέλων με διάφορες αρχιτεκτονικές δικτύου μακράς βραχυπρόθεσμης μνήμης, κατασκευάζονται, εκπαιδεύονται και δοκιμάζονται σε τρία σύνολα χαρακτηριστικών. Τα πειράματα για πέντε μετοχές έδειξαν ότι η πρόβλεψη των μοντέλων ήταν καλύτερη όταν χρησιμοποιήθηκαν χαρακτηριστικά από μια ομάδα μετοχών που ανήκουν στην ίδια ομάδα που προκύπτει από την ομαδοποίηση. Οι ομάδες αποκτήθηκαν με έναν αλγόριθμο Κ-μέσων και τη Δυναμική Χρονική Στρέβλωση. Τα συγκροτήματα που δημιουργήθηκαν για αυτό το έργο είναι η ‘Επιτροπή’, το ‘Στιγμιότυπο’ και η ‘Χρονική Περίοδος’. Τα μοντέλα με τις καλύτερες επιδόσεις ήταν το μοντέλο ‘Χρονική Περίοδος’ ακολουθούμενο από το μοντέλο ‘Επιτροπή’ το οποίο εκπαιδεύτηκε για μεγάλο αριθμό εποχών. Η αξιολόγηση έγινε με τις μετρήσεις RMSE και MAPE και συγκρίθηκε με το Naive μοντέλο. Η χρήση συνδυαστικών μοντέλων βελτίωσε το σφάλμα γενίκευσης από 2.30 σε 0.92 όσον αφορά το RMSE. Το RMSE στα δεδομένα ελέγχου στο τελικό μοντέλο ‘Επιτροπή’, που έχει εκπαιδευτεί σε διαφορετικά σύνολα χαρακτηριστικών, είναι 4.31 όταν χρησιμοποιήθηκαν όλες οι 367 μετοχές, 3.84 όταν χρησιμοποιήθηκαν τα δεδομένα από την ομαδοποίηση με 10 μέσους και 1.32 για το σύμπλεγμα με 40 μέσους
description: The purpose of this thesis is to investigate the effectiveness of Ensembles of long short term memory networks trained by backpropagation through time for stock price prediction. A range of different Ensemble methods with various LSTM network architectures are constructed trained and tested on three feature sets. The experiments for five stocks showed that the predictive performance of models was better when used features from a group of stocks that belong in the same cluster. The clusters were obtained with a k-means algorithm and Dynamic Time Warping. The Ensembles created for this work are Committee, Snapshot and TimePeriod. The best performing models were the TimePeriod followed by Committee trained for a large number of epochs. The evaluation was done with the RMSE and MAPE metrics and was com-pared to the Naive model. Ensemble learning improved generalization error from 2.30 to 0.92 in terms of RMSE. The test RMSE in the final Committee model trained on different feature sets is 4.31 when all 367 stocks were used, 3.84 when used the data from cluster with 10-means algorithm and 1.32 for the cluster with 40 - means algorithm
SU(2) Yang-Mills Theory in Savvidy Background at Finite Temperature and Chemical Potential
Creators: name: Parthasarathy, R.
name: Kumar, Alok
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The one-loop effective energy density of a pure SU(2) Yang-Mills theory in the Savvidy background, at finite temperature and chemical potential is examined with emphasis on the unstable modes. After identifying the stable and unstable modes, the stable modes are treated in the quadratic approximation. For the unstable modes, the full expansion including the cubic and the quartic terms in the fluctuations is used. The functional integrals for the unstable modes are evaluated and added to the results for the stable modes. The resulting energy density is found to be {\it{real}}, coinciding with the real part of the energy density in the quadratic approximation of earlier study. There is now {\it{no imaginary part.}} Numerical results are presented for the variation of the energy density with temperature for various choices of the chemical potential.
description: 20 pages, 1 figure, LATEX and EPS files
Ηλεκτρονική Τραπεζική : Το e-banking στην ελληνική πραγματικότητα
Creators: name: Μπελεβεσλής, Στυλιανός Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ηλεκτρονική Τραπεζική
Κίνδυνοι
Ασφάλεια Συναλλαγών
E-banking
Web Banking
Security

description: Οι νέες τεχνολογικές δυνατότητες και εφαρμογές έχουν διευκολύνει και απλοποιήσει την ανθρώπινη καθημερινότητα σε όλους τους τομείς. Για αυτό και οι τράπεζες δεν έμειναν ανεπηρέαστες από τις καινοτομικές τεχνολογικές εξελίξεις. Τα νέα ψηφιακά κανάλια, που δεν είναι άλλα από τα συστήματα ηλεκτρονικής τραπεζικής, έχουν κερδίσει σημαντικό έδαφος εις βάρος των τραπεζικών παραδοσιακών καταστημάτων.Η παρούσα διπλωματική εργασία, λοιπόν, προσπαθεί να εξηγήσει τον τρόπο λειτουργίας της εναλλακτικής αυτής τραπεζικής εξυπηρέτησης. Αναφέρεται στις υπηρεσίες που παρέχει η ηλεκτρονική τραπεζική, στα μέσα εκτέλεσης τους, στους κινδύνους που την απειλούν και στους τρόπους με τους οποίους η τράπεζα εγγυάται ασφάλεια. Στόχος της εργασίας είναι να προσφέρει στους αναγνώστες μια πιο σφαιρική και ολοκληρωμένη γνώση γύρω από την ηλεκτρονική τραπεζική.Η εργασία διακρίνεται σε δύο μέρη. Το πρώτο κομμάτι αποτελείται από μία θεωρητική περιγραφή και ανάλυση των δυνατοτήτων του συστήματος ηλεκτρονικής τραπεζικής. Το δεύτερο μέρος της εργασίας αποτελείται από την ερευνητική προσέγγιση του θέματος. Στα πλαίσια της έρευνας σχεδιάστηκε ένα ερωτηματολόγιο, κυρίως με ερωτήσεις πολλαπλής επιλογής και κοινοποιήθηκε δια ζώσης, μέσω social media και ηλεκτρονικού ταχυδρομείου σε 211 άτομα. Σκοπός της έρευνας ήταν να διαπιστωθεί σε ποιο βαθμό έχει εισχωρήσει η ηλεκτρονική τραπεζική στην ελληνική πραγματικότητα, πως συμπεριφέρονται οι Έλληνες χρήστες και ποιες είναι οι στρατηγικές που αναπτύσσουν οι ελληνικές τράπεζες.Από την έρευνα διαπιστώθηκε ότι οι Έλληνες χρησιμοποιούν όλο και περισσότερο τις υπηρεσίες ηλεκτρονικής τραπεζικής. Νιώθουν ικανοποιημένοι από το επίπεδο συστημάτων ηλεκτρονικής τραπεζικής των ελληνικών τραπεζών αλλά εκφράζουν τις ανησυχίες και τους φόβους τους όσον αφορά την ασφάλεια των συναλλαγών και των προσωπικών τους δεδομένων
description: The human life has been simplified and became easier due to new technological possibilities and applications. These innovative technological changes have also affected the operation of the banks. The systems of e-banking are the new digital channels for banks and they are going to overtake traditional bank services. This thesis tries to explain how e-banking works. Moreover, the readers will find out the dangers that threaten e-banking and how banks achieve security and safe transactions. The thesis consists of two parts. The first one is the theoretical one, where we describe all the aspects of e-banking. The second describes the survey that was conducted based on questionnaire. The survey targets to find out how e-banking works in Greece and how Greek consumers react. The results showed that Greek consumers use services and applications of e-banking everyday. They feel satisfied by the quality of e-banking services but they are still concerned about the safety of online transactions and their personal information
Fuzzball Shadows: Emergent Horizons from Microstructure
Creators: name: Bacchini, Fabio
name: Mayerson, Daniel R.
name: Ripperda, Bart
name: Davelaar, Jordy
name: Olivares, Héctor
name: Hertog, Thomas
name: Vercnocke, Bert
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the physical properties of four-dimensional, string-theoretical, horizonless "fuzzball" geometries by imaging their shadows. Their microstructure traps light rays straying near the would-be horizon on long-lived, highly redshifted chaotic orbits. In fuzzballs sufficiently near the scaling limit this creates a shadow much like that of a black hole, while avoiding the paradoxes associated with an event horizon. Observations of the shadow size and residual glow can potentially discriminate between fuzzballs away from the scaling limit and alternative models of black compact objects.
description: 6 pages, 3 figures
Properties of the Radio-Emitting Gas Around SgrA*
Creators: name: Loeb, Abraham
name: Waxman, Eli
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the radial profiles of the temperature and density of the electrons as well as the magnetic field strength around the massive black hole at the Galactic center, SgrA*, may be constrained directly from existing radio data without any need to make prior assumptions about the dynamics of the emitting gas. The observed spectrum and wavelength-dependent angular size of SgrA* indicate that the synchrotron emission originates from an optically-thick plasma of quasi-thermal electrons. We find that the electron temperature rises above the virial temperature within tens of Schwarzschild radii from the black hole, suggesting that the emitting plasma may be outflowing. Constraints on the electron density profile are derived from polarization measurements. Our best-fit results differ from expectations based on existing theoretical models. However, these models cannot be ruled out as of yet due to uncertainties in the source size measurements. Our constraints could tighten considerably with future improvements in the size determination and simultaneous polarization measurements at multiple wavelengths.
description: 6 pages, 1 figure, accepted for publication in JCAP (Journal of Cosmology & Astroparticle Physics)
SOYANING KELIB CHIQISH TARIXI.
Creators: name: Ikromov, Yahyo
Publisher: name: Zenodo
Year: 2024

description: Xitoyda soya naqshlari toshlar, suyaklar va toshbaqa qobig'ida. SSSR da soya bo'yicha eng yaxshi mutaxassislar. Soya madaniyatga kiritilgan va oziq-ovqat zavodi maqomiga ega bo'lgan keyingi mamlakat Koreya. Ikkinchi jahon urushi - Amerika reklamasi vazifasini o’tadi.  Nemis tabiatshunosi Engelbert Kempfer Sharqqa tashrif buyurdi. 1712-yilda Karl Linneyning mashhur "Species Plantarum" kitobi. AQSh da soya bo'yicha birinchi tadqiqotlar 1804-yilda  Pensilvaniya shtatida. SSSR da birinchi bo'lib soya ilmiy seleksiyasi. Rossiyada birinchi tajriba ekinlari 1877-yilda Tavriya. Soya hozirgi kunda 60 dan ortiq mamlakatlarda.
Search for production of single top quarks via flavor-changing neutral currents at the Tevatron
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We search for the production of single top quarks via flavor-changing neutral current couplings of a gluon to the top quark and a charm (c) or up (u) quark. We analyze 230 pb^{-1} of lepton+jets data from \ppbar collisions at a center of mass energy of 1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider. We observe no significant deviation from standard model predictions, and hence set upper limits on anomalous coupling parameters κ^c_g/Λand κ^u_g/Λ, where the κ_g define the strength of the tcg and tug couplings, and Λdefines the scale of new physics. The limits at 95% C.L. are: κ^c_g/Λ< 0.15 TeV^{-1} and κ^u_g/Λ< 0.037 TeV^{-1}.
description: 7 pages, 2 figures, submitted to Phys. Rev. Lett
Consumer Brand Engagement in Social Media, Μελέτη Περίπτωσης Instagram
Creators: name: Αλμπανίδου, Γεωργία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εμπλοκή εμπορικών σημάτων
Κοινωνικά μέσα
Consumer Brand Engagement
Engagement
Instagram

description: Τις τελευταίες δύο δεκαετίες, οι σύγχρονες τεχνολογίες και ιδιαίτερα τα κοινωνικά μέσα, όχι μόνο προσελκύουν την προσοχή της ανθρωπότητας αλλά και έχουν σημαντικό ρόλο στην καθημερινότητά μας. Αυτός είναι ο λόγος που οι εμπειρογνώμονες εξαρτώνται από τη δημοτικότητα των κοινωνικών μέσων δικτύωσης για να δημιουργήσουν έναν νέο κόσμο στρατηγικών μάρκετινγκ. Για τις δύο τελευταίες δεκαετίες τα κοινωνικά μέσα δικτύωσης έχουν συμπεριληφθεί στην καθημερινή μας ζωή, έχουν εξαπλωθεί με γρήγορο ρυθμό, που έχει προκαλέσει το ενδιαφέρον του παγκόσμιου τομέα πωλήσεων και τείνει να διαμορφώσει μια σχέση μεταξύ εταιρειών και καταναλωτών που αναπτύσσεται συνεχώς. Πρόσφατα η έννοια της εμπλοκής εμπορικών σημάτων (CBE) έχει διατυπωθεί ώστε να αντικατοπτρίζει περισσότερο τη φύση των ιδιαίτερων αλληλεπιδραστικών σχέσεων μάρκας των καταναλωτών σε σχέση με τις παραδοσιακές έννοιες, συμπεριλαμβανομένης της «ανάμιξης». Το έναυσμα για τη μελέτη αυτή προέκυψε από προσωπικό ενδιαφέρον για την αναζήτηση πληροφοριών σχετικά με το consumer brand engagement. Πέραν αυτού, η επιλογή του Instagram έγινε καθώς είναι το καλύτερο μέσο κοινωνικής δικτυωσης, για μία εταιρία ή ένα brand, για να αποκτήσει και να αναπτύξει engagement με τους καταναλωτές. Αυτό το καθιστά τόσο αποτελεσματικό για την οικοδόμηση ενός brand και για την αποκτήσει δημοτικότητας
description: In the last two decades, modern technologies and especially social media have not only attracted the attention of mankind but also, they have an important role in our daily lives. This is why experts depend on the popularity of social media to create a new world of marketing strategies. For the last two decades, social media has been incorporated into our daily lives, spreading rapidly, which has sparked worldwide interest in the sales sector and tends to form a relationship between companies and consumer which is constantly growing. Recently the concept of consumer brand engagement (CBE) has been formulated to reflect more on the nature of particular interactive consumer brand relationships in relation to traditional concepts, including 'mixing'. The trigger for this study came from personal interest in seeking information about consumer brand engagement. Instagram has been chosen because is the best social networking tool, for a company or for abrand, to gain and develop engagement with consumers. This makes it so effective in building a brand and gaining popularity
Galactic centre X-ray sources
Creators: name: Gosling, Andrew J.
name: Bandyopadhyay, Reba M.
name: Blundell, Katherine M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a campaign to identify the counterparts to the population of X-ray sources discovered at the centre of our Galaxy by Wang et al.(2002) using Chandra. We have used deep, near infrared images obtained on VLT/ISAAC to identify candidate counterparts as astrometric matches to the X-ray positions. Follow up Ks-band spectroscopic observations of the candidate counterparts are used to search for accretions signatures in the spectrum, namely the Brackett-Gamma emission line (Bandyopadhyay et al.1997). From our small initial sample, it appears that only a small percentage, ~2-3% of the ~1000 X-ray sources are high mass X-ray binaries or wind accreting neutron stars, and that the vast majority will be shown to be canonical low mass X-ray binaries and cataclysmic variables.
description: 4 pages, 3 figures; Poster to appear in AIP Conf. Proc.: `The Multicoloured Landscape of Compact Objects and their Explosive Origins'; Cefalu, Sicily, 2006 June 11-24
Correlations and order parameter at a Coulomb-crystal phase transition in a three-dimensional dimer model
Creators: name: Misguich, Gregoire
name: Pasquier, Vincent
name: Alet, Fabien
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The three-dimensional classical dimer model with interactions shows an unexpected continuous phase transition between an ordered dimer crystal and a Coulomb liquid. A detailed analysis of the critical dimer and monomer correlation functions point to a subtle interplay between the fluctuations of the crystal order parameter and the "magnetic" degrees of freedom present in the Coulomb phase. The distribution probability of the crystal order parameter suggests an emerging continuous O(3) symmetry at the critical point.
description: 4 pages, 4 color figures. v2: published version. New data & figure on the probability distribution of the crystal order parameter close to Tc
Machine Learning on Camera Images for Fast mmWave Beamforming
Creators: name: Salehi, Batool
name: Belgiovine, Mauro
name: Sanchez, Sara Garcia
name: Dy, Jennifer
name: Ioannidis, Stratis
name: Chowdhury, Kaushik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Perfect alignment in chosen beam sectors at both transmit- and receive-nodes is required for beamforming in mmWave bands. Current 802.11ad WiFi and emerging 5G cellular standards spend up to several milliseconds exploring different sector combinations to identify the beam pair with the highest SNR. In this paper, we propose a machine learning (ML) approach with two sequential convolutional neural networks (CNN) that uses out-of-band information, in the form of camera images, to (i) rapidly identify the locations of the transmitter and receiver nodes, and then (ii) return the optimal beam pair. We experimentally validate this intriguing concept for indoor settings using the NI 60GHz mmwave transceiver. Our results reveal that our ML approach reduces beamforming related exploration time by 93% under different ambient lighting conditions, with an error of less than 1% compared to the time-intensive deterministic method defined by the current standards.
Additional file 4 of Human menstrual blood-derived stem cells mitigate bleomycin-induced pulmonary fibrosis through anti-apoptosis and anti-inflammatory effects
Creators: name: Chen, Xin
name: Wu, Yi
name: Wang, Yanling
name: Chen, Lijun
name: Zheng, Wendi
name: Zhou, Sining
name: Xu, Huikang
name: Li, Yifei
name: Yuan, Li
name: Xiang, Charlie
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Hematology

description: Additional file 4.
Silicon Nanowires, Catalytic Growth and Electrical Characterization
Creators: name: Weber, Walter M.
name: Duesberg, Georg S.
name: Graham, Andrew P.
name: Liebau, Maik
name: Unger, Eugen
name: Cheze, Caroline
name: Geelhaar, Lutz
name: Lugli, Paolo
name: Riechert, Henning
name: Kreupl, Franz
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nominally undoped silicon nanowires (NW) were grown by catalytic chemical vapor deposition. The growth process was optimized to control the NWs diameters by using different Au catalyst thicknesses on amorphous SiO2, Si3N4, or crystalline-Si substrates. For SiO2 substrates an Ar plasma treatment was used to homogenize the catalyst coalescence, and thus the NWs diameter. Furthermore, planar field effect transistors (FETs) were fabricated by implementing 10 to 30 nm thin nominally undoped Si-NWs as the active region. Various silicides were investigated as Schottky-barrier source and drain contacts for the active region. For CoSi, NiSi and PdSi contacts, the FETs transfer characteristics showed p-type behavior. A FET consisting of a single Si-NW with 20 nanometers diameter and 2.5 micrometer gate-length delivers as much as 0.15 microA on-current at 1 volt bias voltage and has an on/off current ratio of 10^7. This is in contrast to recent reports of low conductance in undoped Si.
description: accepted for publication in phys. stat. sol. (c)(C) (2006) WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
A Note on the Classical BRST Symmetry of the Pure Spinor String in a Curved Background
Creators: name: Chandia, Osvaldo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The classical pure spinor version of the heterotic superstring in a supergravity and super Yang-Mills background is considered. We obtain the BRST transformations of the world-sheet fields. They are consistent with the constraints obtained from the nilpotence of the BSRT charge and the holomorphicity of the BRST current.
description: References added
Exploring the assortativity-clustering space of a network's degree sequence
Creators: name: Holme, Petter
name: Zhao, Jing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Nowadays there is a multitude of measures designed to capture different aspects of network structure. To be able to say if the structure of certain network is expected or not, one needs a reference model (null model). One frequently used null model is the ensemble of graphs with the same set of degrees as the original network. In this paper we argue that this ensemble can be more than just a null model -- it also carries information about the original network and factors that affect its evolution. By mapping out this ensemble in the space of some low-level network structure -- in our case those measured by the assortativity and clustering coefficients -- one can for example study how close to the valid region of the parameter space the observed networks are. Such analysis suggests which quantities are actively optimized during the evolution of the network. We use four very different biological networks to exemplify our method. Among other things, we find that high clustering might be a force in the evolution of protein interaction networks. We also find that all four networks are conspicuously robust to both random errors and targeted attacks.
Family x site interaction in a progeny test of coastal Douglas-fir
Creators: name: Luna-Lopez, Jose F.
Publisher: name: University of British Columbia
Year: 2008

description: Genotype x environment interaction in coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) was evaluated for height at the 6th-, 7'11- and 124'. year and diameterat the 12th. year. Data collected from 15 families of the Experimental Project 708 of the BCMF were used. In addition, family stability was quantified using 4 different methods. Interaction was not statistically significant for any of the variables evaluated. These results support the findings of a previous study made by the BCMF in another set of families of the same program. Only 2 methods gave similar results when family stability was evaluated. In general, families kept a similar yield pattern for all the variables. The lack of statistical significance of the interaction together with the results obtained in the study previously mentioned, suggest the possibility of working with only one breeding population for this program.
OGLE-2018-BLG-0567Lb and OGLE-2018-BLG-0962Lb: Two Microlensing Planets through Planetary-Caustic Channel
Creators: name: Jung, Youn Kil
name: Han, Cheongho
name: Udalski, Andrzej
name: Gould, Andrew
name: Yee, Jennifer C.
name: Albrow, Michael D.
name: Chung, Sun-Ju
name: Hwang, Kyu-Ha
name: Ryu, Yoon-Hyun
name: Shin, In-Gu
name: Shvartzvald, Yossi
name: Zhu, Wei
name: Zang, Weicheng
name: Cha, Sang-Mok
name: Kim, Dong-Jin
name: Kim, Hyoun-Woo
name: Kim, Seung-Lee
name: Lee, Chung-Uk
name: Lee, Dong-Joo
name: Lee, Yongseok
name: Park, Byeong-Gon
name: Mróz, Richard W. Pogge Przemek
name: Szymański, Michał K.
name: Skowron, Jan
name: Poleski, Radek
name: Soszyński, Igor
name: Pietrukowicz, Paweł
name: Kozłowski, Szymon
name: Ulaczyk, Krzystof
name: Rybicki, Krzysztof A.
name: Iwanek, Patryk
name: Wrona, Marcin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the analyses of two microlensing events, OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962. In both events, the short-lasting anomalies were densely and continuously covered by two high-cadence surveys. The light-curve modeling indicates that the anomalies are generated by source crossings over the planetary caustics induced by planetary companions to the hosts. The estimated planet/host separation (scaled to the angular Einstein radius $θ_{\rm E}$) and mass ratio are $(s, q) = (1.81, 1.24\times10^{-3})$ and $(s, q) = (1.25, 2.38\times10^{-3})$, respectively. From Bayesian analyses, we estimate the host and planet masses as $(M_{\rm h}, M_{\rm p}) = (0.24_{-0.13}^{+0.16}\,M_{\odot}, 0.32_{-0.16}^{+0.34}\,M_{\rm J})$ and $(M_{\rm h}, M_{\rm p}) = (0.55_{-0.29}^{+0.32}\,M_{\odot}, 1.37_{-0.72}^{+0.80}\,M_{\rm J})$, respectively. These planetary systems are located at a distance of $7.07_{-1.15}^{+0.93}\,{\rm kpc}$ for OGLE-2018-BLG-0567 and $6.47_{-1.73}^{+1.04}\,{\rm kpc}$ for OGLE-2018-BLG-0962, suggesting that they are likely to be near the Galactic bulge. The two events prove the capability of current high-cadence surveys for finding planets through the planetary-caustic channel. We find that most published planetary-caustic planets are found in Hollywood events in which the source size strongly contributes to the anomaly cross section relative to the size of the caustic.
description: 25 pages, 8 figures, 4 tables, submitted to AAS journal
Causes and consequences of sexual habitat segregation in grizzly bears
Creators: name: Wielgus, Robert B.
Publisher: name: University of British Columbia
Year: 2008

description: I studied habitat use and population dynamics of 2 grizzly bear (Ursus arctos) populations to test 3 competing hypotheses of sexual habitat segregation (no avoidance, food competition, and sex competition) and 3competing hypotheses on the effects of adult male mortality on female reproduction (additive, compensatory, depensatory). Twenty bears were radio-monitored from 1980 to 1984 in Kananaskis, Alberta and 28 bears were radio-monitored from 1985 to 1990 in the Selkirk Mountains of Idaho and British Columbia. The Kananaskis population had high mortality of older adult males and a corresponding influx of younger immigrant males. That population had a low reproductive rate and appeared to be declining. The Selkirk population had low mortality of older adult males and few younger immigrant males - that population had a high reproductive rate and appeared to be stable. Sexually mature adult females avoided food-rich, male-occupied habitat in Kananaskis where there were many potentially infanticidal, immigrant males; but not in the Selkirks where there were few such males. Sexually immature subadult females did not avoid food-rich, male-occupied habitat in either study area. Mean litter size of cubs was smaller in Kananaskis than in the Selkirks despite earlier age at first reproduction. Age of mothers, food supply, and population density did not explain the smaller litters but adult female avoidance of immigrant males and food-rich, male-occupied habitats appears to explain the smaller litters. My results reject the "no avoidance" and "food competition" models but support the "sex competition" model of habitat segregation. My results also reject the "additive' and "compensatory" models but support the "depensatory" model of adult male mortality. Trophy hunting of adult males was not compensatory for reproduction and beneficial for population growth as commonly believed, but was actually depensatory for reproduction and contributed to population decline.
Ab initio calculations of the spectrum of lawrencium
Creators: name: Kahl, E. V.
name: Raeder, S.
name: Eliav, E.
name: Borschevsky, A.
name: Berengut, J. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Planned optical spectroscopy experiments in lawrencium (Lr, Z = 103) require accurate theoretical predictions of the location of spectral lines in order to narrow the experimental search window. We present ab initio calculations of the atomic energy levels, transition amplitudes and g-factors for lawrencium, as well as its lighter homologue lutetium (Lu, Z = 71). We use the configuration interaction with many-body perturbation-theory (CI+MBPT) method to calculate energy levels and transition properties, and benchmark the accuracy of our predicted energies using relativistic coupled-cluster codes. Our results are numerically converged and in close agreement with experimentally measured energy levels for Lu, and we expect a similar accuracy for Lr. These systematic calculations have identified multiple transitions of experimental utility and will serve to guide future experimental studies of Lr.
description: 13 pages, 4 figures, 7 tables
Calculation of the conductance of a graphene sheet using the Chalker-Coddington network model
Creators: name: Snyman, I.
name: Tworzydlo, J.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Chalker-Coddington network model (introduced originally as a model for percolation in the quantum Hall effect) is known to map onto the two-dimensional Dirac equation. Here we show how the network model can be used to solve a scattering problem in a weakly doped graphene sheet connected to heavily doped electron reservoirs. We develop a numerical procedure to calculate the scattering matrix with the aide of the network model. For numerical purposes, the advantage of the network model over the honeycomb lattice is that it eliminates intervalley scattering from the outset. We avoid the need to include the heavily doped regions in the network model (which would be computationally expensive), by means of an analytical relation between the transfer matrix through the weakly doped region and the scattering matrix between the electron reservoirs. We test the network algorithm by calculating the conductance of an electrostatically defined quantum point contact and comparing with the tight-binding model of graphene. We further calculate the conductance of a graphene sheet in the presence of disorder in the regime where intervalley scattering is suppressed. We find an increase in conductance that is consistent with previous studies. Unlike the tight-binding model, the network model does not require smooth potentials in order to avoid intervalley scattering.
description: 10 pages, 12 figures
Η σχέση του πλεονάσματος προσόντων με την οργανωσιακή ελκυστικότητα : ο διαμεσολαβητικός ρόλος της σχετικής στέρησης
Creators: name: Μπεχτσής, Δημήτριος Ανδρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Aντιλαμβανόμενο Πλεόνασμα Προσόντων
Σχετική Στέρηση
Οργανωσιακή Ελκυστικότητα
Perceived overqualification
Relative Deprivation
Organizational Attractiveness

description: Η παρούσα διπλωματική εργασία, πραγματεύεται το αντιλαμβανόμενο πλεόνασμα προσόντων των εργαζομένων σε επιχειρήσεις με σκοπό να κατανοηθούν οι επιπτώσεις που προκαλεί στον εργαζόμενο, τον ίδιο τον οργανισμό αλλά και το περιβάλλον του εργαζομένου . Γίνεται μια μελέτη της έννοιας του πλεονάσματος προσόντων και ιδιαίτερα του αντιληπτικού πλεονάσματος προσόντων αλλά και του αντικειμενικού, της θεωρίας σχετικής στέρησης (Relative Deprivation Theory) και της οργανωσιακής ελκυστικότητας, οι οποίες απαρτίζουν και τις μεταβλητές της έρευνας μας Στο τέλος θα παρουσιαστούν τα αποτελέσματα και θα γίνει σύγκριση των αποτελεσμάτων της έρευνας με την διεθνή βιβλιογραφία, ώστε να διερευνηθεί η συσχέτιση του αντιληπτού πλεονάσματος προσόντων με τη σχετική στέρηση αλλά και την οργανωσιακή ελκυστικότητα. Η έρευνα βασίστηκε στη διανομή και συλλογή ερωτηματολογίων και από πηγές του διαδίκτυου, βάσει της οποίας από ένα δείγμα 321 ατόμων έπειτα από τις απαντήσεις που έδωσαν σε μια σειρά από ερωτήσεις, προέκυψε θετική συσχέτιση του πλεονάσματος προσόντων με τη σχετική στέρηση αλλά αρνητική της σχετικής στέρησης με την οργανωσιακή ελκυστικότητα
description: The following research study, discusses the perceived overqualification of employees of companies in order to estimate the consequences on the employee ,the company but also on the working environment. Therefore it has been studied the concept of the skills’ surplus, with a particular focus on the perceived surplus, on the objective one, the Relative Deprivation Theory and the organizational attractiveness , which constitute the variables of the study. In the end, follows the representation of the results of the study, and their comparison with the given results of the international bibliography. This way will be investigated the correlation of the perceived skills’ surplus with the relative deprivation, and also the organizational attractiveness. To conclude, the current research study has been based on the distribution and collection of questionnaires, and online resources. Based on a sample of 321 people, collecting their answers to a series of given questions, the revealing result is the positive correlation between the skills’ surplus and the relative deprivation, but negative one between the relative deprivation and the organizational attractiveness
Evaluation of the simulation training program for foundation doctors in a district general hospital in the United Kingdom
Creators: name: Mousumi Sadhukhan
name: Shackley, Elizabeth
name: Murdoch, Jodie
name: Suggitt, Aoife Colgan Debbie
name: Baxter, Jeanette
Publisher: name: F1000 Research Limited
Year: 2024

description: Background 

Simulation training in medical education is well established. Foundation doctors are in transition from medical student to qualified doctors. Simulation training allows them to learn and practice vital skills in emergency/common/uncommon scenarios in a safe environment. 



Summary of Work 



Simulation training program for foundation doctors (FD) was started in 2017 as part of weekly teaching programme in Stepping Hill Hospital. After a brief period of interruption during Covid pandemic, the programme has resumed. The programme is evaluated to improve the experience and training of FD. Survey method is used and data collected from a population of all FD using a validated questionnaire (modified SET-M). At the end of each session FDs voluntarily and anonymously complete the questionnaire. Topics are carefully selected from foundation curriculum, trainee & facilitator feedback. Facilitators are all trained and familiar with the scenarios.



Summary of Results



This evaluation is from 242 responses from sixteen sessions between September 2022-september 2023. Debrief plays an important part in the simulation programme. Data is collated prospectively in Excel spread sheet. Majority of FDs felt more empowered in making clinical decisions, responding to changes in patient condition and practice clinical decision-making skills after simulation training. Seventy-five percent strongly agreed that they were more confident in assessment skills. More than 80% strongly agreed that debriefing was valuable in improving clinical judgement and allowed them to communicate their feeling before focusing on the scenario. Ninety-five percent strongly agreed that debrief was a constructive evaluation of simulation teaching.



Discussion and Conclusion 



The new August 2021 Foundation Programme Curriculum has set out specific requirements for simulation teaching sessions. Some foundation schools use Virtual Reality (VR) and self-directed learning to deliver simulation training. In Stockport, we continue to deliver the programme as face to face. This is highly evaluated by FD, particularly the debrief part which is difficult to deliver in the VR scenarios. So, foundation trainees highly rate the simulation programme, and they wanted more of similar sessions in future programmes. 



Take Home Message



The Simulation training programme in Stockport is highly valued by FDs and this programme continues to provide a safe environment for the FDs to learn and train.
Radio Spectral Index Analysis of Southern Hemisphere Symbiotic Stars
Creators: name: Dickey, John M.
name: Weston, J. H. S.
name: Sokoloski, J. L.
name: Vrtilek, S. D.
name: McCollough, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Symbiotic stars show emission across the electromagnetic spectrum from a wide array of physical processes. At cm-waves both synchrotron and thermal emission is seen, often highly variable and associated with outbursts in the optical and X-rays. Most models of the radio emission include an ionized region within the dense wind of the red giant star, that is kept ionized by activity on the white dwarf companion or its accretion disk. In some cases there is on-going shell burning on the white dwarf due to its high mass accretion rate or a prior nova eruption, in other cases nuclear fusion occurs only occasionally as recurrent nova events. In this study we measure the spectral indices of a sample of symbiotic systems in the Southern Hemisphere using the Australia Telescope Compact Array. Putting our data together with results from other surveys, we derive the optical depths and brightness temperatures of some well-known symbiotic stars. Using parallax distances from Gaia Data Release 3, we determine the sizes and characteristic electron densities in the radio emission regions. The results show a range of a factor of 10^4 in radio luminosity, and a factor of 100 in linear size. These numbers are consistent with a picture where the rate of shell burning on the white dwarf determines the radio luminosity. Therefore, our findings also suggest that radio luminosity can be used to determine whether a symbiotic star is powered by accretion alone or also by shell burning.
description: Ap.J. accepted for publication
Non-perturbative and Flux superpotentials for Type I strings on the Z_3 orbifold
Creators: name: Bianchi, Massimo
name: Kiritsis, Elias
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-perturbative effects are studied for Type I strings on the Z_3 orbifold with Chan-Paton symmetry broken by Wilson lines. Generalizing previous analyses that have focussed on (bi)fundamentals, it is argued that (anti)symmetric representations of the resulting gauge group play a decisive role in generating an ADS-like superpotential in this and related cases. Non perturbative corrections in the closed string moduli are only allowed if properly dressed with open string fields charged under the anomalous U(1) of the orbifold. A general discussion of instanton effects in SYM and string theories is given. Non-perturbative superpotentials induced by both $ED5$'s and ED1's are analyzed. The superpotential generated by closed string fluxes, viz. Scherk-Schwarz shifts (torsion), R-R 3-form flux as well as non-geometric fluxes is derived. Some preliminary comments on the compatibility of the two kinds of superpotentials and the issue of moduli stabilization are presented.
description: Latex, 30 pages; v2: misprints corrected and a few explanations added
Learning to run a Power Network Challenge: a Retrospective Analysis
Creators: name: Marot, Antoine
name: Donnot, Benjamin
name: Dulac-Arnold, Gabriel
name: Kelly, Adrian
name: O'Sullivan, Aïdan
name: Viebahn, Jan
name: Awad, Mariette
name: Guyon, Isabelle
name: Panciatici, Patrick
name: Romero, Camilo
Publisher: name: arXiv
Year: 2021
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: Power networks, responsible for transporting electricity across large geographical regions, are complex infrastructures on which modern life critically depend. Variations in demand and production profiles, with increasing renewable energy integration, as well as the high voltage network technology, constitute a real challenge for human operators when optimizing electricity transportation while avoiding blackouts. Motivated to investigate the potential of AI methods in enabling adaptability in power network operation, we have designed a L2RPN challenge to encourage the development of reinforcement learning solutions to key problems present in the next-generation power networks. The NeurIPS 2020 competition was well received by the international community attracting over 300 participants worldwide. The main contribution of this challenge is our proposed comprehensive 'Grid2Op' framework, and associated benchmark, which plays realistic sequential network operations scenarios. The Grid2Op framework, which is open-source and easily re-usable, allows users to define new environments with its companion GridAlive ecosystem. Grid2Op relies on existing non-linear physical power network simulators and let users create a series of perturbations and challenges that are representative of two important problems: a) the uncertainty resulting from the increased use of unpredictable renewable energy sources, and b) the robustness required with contingent line disconnections. In this paper, we give the competition highlights. We present the benchmark suite and analyse the winning solutions, including one super-human performance demonstration. We propose our organizational insights for a successful competition and conclude on open research avenues. Given the challenge success, we expect our work will foster research to create more sustainable solutions for power network operations.
Who has an appetite for insects? Identifying segments of early adopters of insect-based food and their product attribute preferences: Insights from a choice experiment study in Germany
Creators: name: Puteri, Berlianti
name: Oehlmann, Malte
name: Jahnke, Benedikt
Publisher: name: Universität Kassel
Year: 2024
Subjects: subject: alternative protein
subject: consumer segmentation
subject: edible insects
subject: food labelling
subject: food marketing
subject: food naturalness
subject: 300
subject: 500
subject: Deutschland
subject: Essbare Kleinsttiere
subject: Proteine
subject: Verbraucherverhalten
subject: Segmentierung
subject: Lebensmittelkennzeichnung
subject: Marketing
subject: FOS: Economics and business

description: Gefördert im Rahmen des Projekts DEAL
Rough translation of file 023_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-020214-02: Rough translation (minute-by-minute) of file 023_A (tape 023, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from the beginning of the file to 22:09; no transcription in this session, translation only. Due to re-numbering, tape 023_A has been assigned to the CLA item number LA256.023, audio file LA256.023A.
Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
Creators: name: Markowitz, A.
name: Reeves, J.
name: Braito, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed analysis of the XMM-Newton long-look of the Seyfert galaxy IC 4329a. The Fe K bandpass is dominated by two resolved peaks at 6.4 keV and 7.0 keV, consistent with neutral or near-neutral Fe K alpha and K beta emission. There is a prominent redward asymmetry in the 6.4 keV line, which could indicate emission from a Compton shoulder. Alternatively, models using dual relativistic disklines are found to describe the emission profile well. A low-inclination, moderately-relativistic dual-diskline model is possible if the contribution from narrow components, due to distant material, is small or absent. A high-inclination, moderately relativistic profile for each peak is possible if there are roughly equal contributions from both the broad and narrow components. Combining the XMM-Newton data with RXTE monitoring data, we explore the time-resolved spectral behavior on time scales from hours to 2 years. We find no strong evidence for variability of the Fe K line flux on any time scale, likely due to the minimal level of continuum variability. We detect, at high significance, a narrow absorption line at 7.68 keV. This feature is most likely due to Fe XXVI K alpha absorption blueshifted to about 0.1c relative to the systemic velocity, suggesting a high-velocity, highly-ionized outflow component. As is often the case with similar outflows seen in high-luminosity quasars, the power associated with the outflow represents a substantial portion of the total energy budget of the AGN. The outflow could arise from a radiatively-driven disk wind, or it may be in the form of a discrete, transient blob of ejected material.
description: Accepted for publication in The Astrophysical Journal; 25 pages; 11 figures
Thermodynamic fluctuation relation for temperature and energy
Creators: name: Velazquez, L.
name: Curilef, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The present work extends the well-known thermodynamic relation $C=β^{2}< δ{E^{2}}>$ for the canonical ensemble. We start from the general situation of the thermodynamic equilibrium between a large but finite system of interest and a generalized thermostat, which we define in the course of the paper. The resulting identity $< δβδ{E}> =1+< δ{E^{2}}% > \partial ^{2}S(E) /\partial {E^{2}}$ can account for thermodynamic states with a negative heat capacity $C<0$; at the same time, it represents a thermodynamic fluctuation relation that imposes some restrictions on the determination of the microcanonical caloric curve $β(E) =\partial S(E) /\partial E$. Finally, we comment briefly on the implications of the present result for the development of new Monte Carlo methods and an apparent analogy with quantum mechanics.
description: Version accepted for publication in J. Phys. A: Math and Theo