cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Single top production in association with a Z boson at the LHC
Creators: name: Campbell, John
name: Ellis, R. Keith
name: Röntsch, Raoul
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for the production of a Z boson in association with single top at next-to-leading order (NLO), including the decay of the top quark and the Z boson. This electroweak process gives rise to the trilepton signature l+l-l'+- + jets + missing energy. We present results for this signature and show that the rate is competitive with the contribution of the mixed strong and electroweak production process, ttZ. As such it should be observable in the full data sample from LHC running at $\sqrt{s}=8$ TeV. The single top + Z process is a hitherto unconsidered irreducible background in searches for flavour changing neutral current decays of the top quark in tt production. For a selection of cuts used at the LHC involving a b-tag it is the dominant background. In an appendix we also briefly discuss the impact of NLO corrections on the related tH process.
description: Changes to some numbers in tables, conclusions unchanged
Additional file 1 of What do stroke survivors’ value about participating in research and what are the most important research problems related to stroke or transient ischemic attack (TIA)? A survey
Creators: name: Weerasekara, Ishanka
name: Baye, Jasmine
name: Burke, Meredith
name: Crowfoot, Gary
name: Mason, Gillian
name: Peak, Rachael
name: Simpson, Dawn
name: Walker, Frederick Rohan
name: Nilsson, Michael
name: Pollack, Michael
name: English, Coralie
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1. Survey questionnaire.
title: Regulating peer-to-peer (P2P) lending: a comparative study of the UK and China
Creators: name: Yang, Chen
Publisher: name: University of Kent
Year: 2025

description: P2P lending is a method of debt financing that connects individuals and/or SMEs (Small and Medium-sized Enterprises) for direct lending and borrowing through an online platform. As an alternative financial method, its significant growth enhances financial inclusion by lowering the threshold for accessing lending services. However, P2P lending users, as consumers, bear excessive risks associated with this tripartite trust-building lending service, necessitating tailored regulation to ensure sufficient protection for them.

This thesis examines the narrative of both unsecured and secured P2P lending from the perspective of consumer protection, identifying that P2P lenders are vulnerable and justifying the need for an interventionist regulatory approach to protect them. To understand P2P lending in the market and the regulation, and then to explore a tailored regulatory paradigm for protecting P2P consumers, this thesis compares two of the most important P2P lending markets, China and the UK. Drawing lessons from China's failure and the UK's regulatory experiences in this area, this thesis finds that P2P lending platforms are a unique form of digital lending intermediary, distinct not only from pure information intermediaries but also from traditional financial intermediaries. Therefore, the regulation cannot be simply mirrored to either. 

This thesis argues that fault-based liability is insufficient to address regulatory difficulties and that holding platforms liable for certain wrongdoings on their platform is justified. It proposes a regulatory paradigm that includes enhancing the platform's liability by applying gatekeeper liability to P2P platforms, emphasising prudential regulation, and adopting a look-though approach to regulate emerging P2P loan securitisation.
title: Παραμετρική σχεδίαση σε περιβάλλον CAD
Creators: name: Σηφαντωνακης Δημητριος
Publisher: name: Technical University of Crete
Year: 2016

description: Η παρούσα διπλωματική έχει σκοπό να εξετάσει το θέμα της παραμετρικής σχεδίασης σε περιβάλλον CAD.

Στο δεύτερο κεφάλαιο γίνεται μια εισαγωγή στα συστήματα CAD, παρουσιάζεται  η παραμετρική σχεδίαση, πως λειτουργούν τα συστήματα σχεδιασμού με τη βοήθεια υπολογιστή, τι ικανότητες δίνουν στο χρήστη, ποιά είναι τα πλεονεκτήματά τους, ποιά είναι η διαδικασία παραμετρικής μοντελοποίησης των στερεών, τι είναι οικογένεια εξαρτημάτων και πως συνδυάζονται τα συστήματα CAD/CAM.

Στο τρίτο κεφάλαιο παρουσιάζεται η διαδικασία παραμετροποίησης και η αναλυτική εφαρμογή της σε ένα από τα δοκίμια της εργασίας. Η παραμετροποίηση αυτή, καθώς και όλα τα σχεδιαστικά μέρη αυτής της εργασίας έγιναν στο περιβάλλον του Inventor Professional 2016 της Autodesk.

Στο τέταρτο κεφάλαιο ακολουθεί μια σειρά από παραμετροποιημένα δοκίμια μαζί με τα μηχανολογικά τους σχέδια, αλλά και κάποιες παραλλαγές τους, που προκύπτουν από την παραμετρική σχεδίαση.

Τέλος, στο πέμπτο και τελευταίο κεφάλαιο παραθέτονται τρεις παραμετροποιημένες συναρμογές, τα μηχανολογικά τους σχέδια καθώς και μερικές ενδεικτικές παραλλαγές τους.
Egyptian Mysteries and Secret Societies in the Age of Enlightenment. A ‘mnemo-historical’ study
Creators: name: Assmann, Jan
Publisher: name: Aegyptiaca. Journal of the History of Reception of Ancient Egypt
Year: 2017

description: [nicht vorhanden / not available]
description: Aegyptiaca. Journal of the History of Reception of Ancient Egypt, Nr. 1 (2017): Aegyptiaca. History of Recepiton of Ancient Egypt
title: Evaluation of a model predictive control strategy on a calibrated multilane microscopic model
title: Αξιολόγηση μιας στρατηγικής προβλεπτικού ελέγχου σε επικυρωμένο μικροσκοπικό μοντέλο πολλαπλών λωρίδων
Creators: name: Περρακη Γεωργια
Publisher: name: Technical University of Crete
Year: 2016

description: This master thesis investigates the effectiveness of a Model Predictive Control (MPC) scheme applied on a calibrated and validated microscopic multilane model. Microscopic traffic models have become increasingly popular in order to solve design and analysis problems difficult to be studied by other means. Although the simulation models can be useful for engineers, they have to be firstly calibrated and validated in order to ensure that they can lead to meaningful results. A stretch of the freeway A20 which connects Rotterdam to Gouda in the Netherlands is modeled in a microscopic simulator. Speed and flow measurements, collected from the field, are used in order to tune the simulation parameters with the purpose of replicating realistic traffic conditions. Different datasets are used in order to verify that the model reproduces reality under different conditions. An MPC scheme is then applied in the calibrated model aiming at the mitigation of traffic congestion in the case study network. The control strategy is based on the assumption that the vehicles are equipped with Vehicle Automation and Communication Systems (VACS), which offer numerous advantages concerning the actuation possibilities and availability of information.
On the nature of tunable hole g-factors in quantum dots
Creators: name: Ares, N.
name: Golovach, V. N.
name: Katsaros, G.
name: Stoffel, M.
name: Fournel, F.
name: Glazman, L. I.
name: Schmidt, O. G.
name: De Franceschi, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electrically tunable g-factors in quantum dots are highly desirable for applications in quantum computing and spintronics. We report giant modulation of the hole g-factor in a SiGe nanocrystal when an electric field is applied to the nanocrystal along its growth direction. We derive a contribution to the g-factor that stems from an orbital effect of the magnetic field, which lifts the Kramers degeneracy in the nanocrystal by altering the mixing between the heavy and the light holes. We show that the relative displacement between the heavy- and light-hole wave functions, occurring upon application of the electric field, has an effect on the mixing strength and leads to a strong non-monotonic modulation of the g-factor. Despite intensive studies of the g-factor since the late 50's, this mechanism of g-factor control has been largely overlooked in the literature.
description: 9 pages, 6 figures
title: Μελέτη σκοπιμότητας στην επέκταση του Μετρό Αττικής στο Ίλιον
Creators: name: Κυριακοπουλος Παναγιωτης
Publisher: name: Technical University of Crete
Year: 2016

description: Στόχος της παρούσας διπλωματικής εργασίας είναι η μελέτη σκοπιμότητας στην επέκταση της γραμμής 2 του υπάρχοντος δικτύου του Μετρό Αττικής με ένα νέο σταθμό στο Ίλιον και η βιωσιμότητα αυτού . Αρχικά γίνεται μια ιστορική αναδρομή στο  υπάρχον δίκτυο του Μετρό Αττικής  παρουσιάζοντας τα κυριότερα χαρακτηριστικά του, εξηγώντας παράλληλα το πόσο σημαντικός είναι ο ρόλος της ποιότητας της εξυπηρέτησης του επιβατικού κοινού στα μέσα μαζικής μεταφοράς. Μετά την παρουσίαση όλων όσων έχουν αναφερθεί παραπάνω, γίνεται μια ειδικότερη ανάλυση και μελέτη στο ενδεχόμενο επέκτασης του δικτύου σε ένα νέο σταθμό στον Ίλιον Αττικής. Κατά την ανάλυση αυτή παρουσιάζονται οι οικονομικές μεταβλητές που επηρεάζουν το πρόβλημα, όπως το κόστος της επένδυσης, το λειτουργικό κόστος του σταθμού αλλά και τρία πιθανά σενάρια  εσόδων που θα προκύψουν από τη δημιουργία αυτού. Έπειτα, συγκρίνονται τα οικονομικά αποτελέσματα που πρόεκυψαν απότην οικονομική μέθοδο του εσωτερικού βαθμού  απόδοσης (ΕΒΑ) για τα τρία σενάρια εσόδων. Κλείνοντας αναλύονται τα κοινωνικοοικονομικά οφέλη της μελέτης και εξάγονται τα απαραίτητα συμπεράσματα .
Additional file 1 of Special orthopaedic geriatrics (SOG) - a new multiprofessional care model for elderly patients in elective orthopaedic surgery: a study protocol for a prospective randomized controlled trial of a multimodal intervention in frail patients with hip and knee replacement
Creators: name: Kappenschneider, Tobias
name: Maderbacher, Günther
name: Weber, Markus
name: Greimel, Felix
name: Holzapfel, Dominik
name: Parik, Lukas
name: Schwarz, Timo
name: Leiss, Franziska
name: Knebl, Michael
name: Reinhard, Jan
name: Schraag, Amadeus Dominik
name: Thieme, Max
name: Turn, Agathe
name: Götz, Julia
name: Zborilova, Magdalena
name: Pulido, Loreto C.
name: Azar, Fady
name: Spörrer, Jan-Frederik
name: Oblinger, Britta
name: Pfalzgraf, Frederik
name: Sundmacher, Leonie
name: Iashchenko, Iryna
name: Franke, Sebastian
name: Trabold, Benedikt
name: Michalk, Katrin
name: Grifka, Joachim
name: Meyer, Matthias
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy

description: Additional file 1. SOG Screening Tool.
Additional file 2 of What do stroke survivors’ value about participating in research and what are the most important research problems related to stroke or transient ischemic attack (TIA)? A survey
Creators: name: Weerasekara, Ishanka
name: Baye, Jasmine
name: Burke, Meredith
name: Crowfoot, Gary
name: Mason, Gillian
name: Peak, Rachael
name: Simpson, Dawn
name: Walker, Frederick Rohan
name: Nilsson, Michael
name: Pollack, Michael
name: English, Coralie
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 2. Key themes of free text responses.
Extreme intensity pulses in a semiconductor laser with a short external cavity
Creators: name: Reinoso, Jose A.
name: Zamora-Munt, Jordi
name: Masoller, Cristina
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present a numerical study of the pulses displayed by a semiconductor laser with optical feedback in the short cavity regime, such that the external cavity round trip time is smaller than the laser relaxation oscillation period. For certain parameters there are occasional pulses, which are high enough to be considered extreme events. We characterize the bifurcation scenario that gives rise to such extreme pulses and study the influence of noise. We demonstrate intermittency when the extreme pulses appear and hysteresis when the attractor that sustains these pulses is destroyed. We also show that this scenario is robust under the inclusion of noise.
title: Interpreting Contemporary Pilgrimage as Spiritual Journey or Aesthetic Tourism Along the Appalachian Trail
Creators: name: Redick, Kip
Publisher: name: Technological University Dublin
Year: 2018

description: Pilgrimage and tourism can be interpreted as overlapping travel experiences. Given all the changes mass transportation and communication technologies have brought, understanding the phenomenon of pilgrimage becomes fraught with ambiguity. Is pilgrimage better understood as a tourist excursion that affords instances of religious devotion? Pilgrimage routes and long distance scenic trails have their aesthetic appeal, which pilgrims and tourists enjoy. Is there a difference in the way these two groups walk these trails that become manifest through aesthetic experiences and encounters? Looking at long distance hiking on the Appalachian Trail as spiritual journey opens up a reinterpretation of both pilgrimage and tourism, disentangling them. In taking a phenomenological approach to describing and interpreting the two kinds of travel, they are shown to be dissimilar. The liminal journey of the pilgrim opens them to an encounter with both symbols and beings that is distinct from the scenic orientation of the tourist.
On Multiplicative Linear Logic, Modality and Quantum Circuits
Creators: name: Lago, Ugo Dal
name: Faggian, Claudia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: F.4.1; F.1.1

description: A logical system derived from linear logic and called QMLL is introduced and shown able to capture all unitary quantum circuits. Conversely, any proof is shown to compute, through a concrete GoI interpretation, some quantum circuits. The system QMLL, which enjoys cut-elimination, is obtained by endowing multiplicative linear logic with a quantum modality.
description: In Proceedings QPL 2011, arXiv:1210.0298
title: The Maria Lionza Pilgrimage: From Sacred Mountains to Hotels
Creators: name: Carter, Cristina
Publisher: name: Technological University Dublin
Year: 2018

description: María Lionza is an indigenous Venezuelan religion that dates back to the 14th century. Combining Catholic, West African, and indigenous religions it was outlawed from being practiced until 1959. At this moment, María Lionza no longer hides from society, being transferred through means of oral tradition and family kinship, instead, it has built a strong foundation through politics and documented literature. As the pilgrimage has gained popularity and approximately 50% of Venezuelans attend, the state has become more involved. In 1960 the state named Mount Sorte (the location of the pilgrimage) a national park; giving them more authority over the land. However, it was not until the late 1980’s that Mount Sorte was named a national monument changing laws regarding the treatment of the mountain and its inhabitants. Since it has been made a national monument, guards have been placed at stations to keep an eye on the monument, or sacred mountain. In recent years, the state has become more and more involved in the pilgrimage.
On the Hot Gas Content of the Milky Way Halo
Creators: name: Fang, Taotao
name: Bullock, James S.
name: Boylan-Kolchin, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Milky Way appears to be missing baryons, as the observed mass in stars and gas is well below the cosmic mean. One possibility is that a substantial fraction of the Galaxy's baryons are embedded within an extended, million-degree hot halo, an idea supported indirectly by observations of warm gas clouds in the halo and gas-free dwarf spheroidal satellites. X-ray observations have established that hot gas does exist in our Galaxy beyond the local hot bubble; however, it may be distributed in a hot disk configuration. Moreover, recent investigations into the X-ray constraints have suggested that any Galactic corona must be insignificant. Here we re-examine the observational data, particularly in the X-ray and radio bands, in order to determine whether it is possible for a substantial fraction of the Galaxy's baryons to exist in ~ 10^6 K gas. In agreement with past studies, we find that a baryonically closed halo is clearly ruled out if one assumes that the hot corona is distributed with a cuspy NFW profile. However, if the hot corona of the galaxy is in an extended, low-density distribution with a large central core, as expected for an adiabatic gas in hydrostatic equilibrium, then it may contain up to 10^11 M_sun of material, possibly accounting for all of the missing Galactic baryons. We briefly discuss some potential avenues for discriminating between a massive, extended hot halo and a local hot disk.
description: 8 pages, 4 figures, accepted for publication in ApJ
Quantum criticality at the Chern-to-normal insulator transition
Creators: name: Xue, Yu
name: Prodan, Emil
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Using the non-commutative Kubo formula for aperiodic solids [1-3] and a recently developed numerical implementation [4], we study the conductivity $σ$ and resistivity $ρ$ tensors as functions of Fermi level and temperature, for models of strongly disordered Chern insulators. The formalism enabled us to converge the transport coefficients at temperatures low enough to enter the quantum critical regime at the Chern-to-trivial insulator transition. We find that the $ρ_{xx}$-curves at different temperatures intersect each other at one single critical point, and that they obey a single-parameter scaling law with an exponent close to the universally accepted value for the unitary symmetry class. However, when compared with the established experimental facts on the plateau-insulator transition in the Integer Quantum Hall Effect, we find a universal critical conductance $σ_{xx}^c$ twice as large, an ellipse rather than a semi-circle law, and absence of the quantized Hall insulator phase.
description: 7 figures; minor typos eliminated; references added
Additional file 3 of What do stroke survivors’ value about participating in research and what are the most important research problems related to stroke or transient ischemic attack (TIA)? A survey
Creators: name: Weerasekara, Ishanka
name: Baye, Jasmine
name: Burke, Meredith
name: Crowfoot, Gary
name: Mason, Gillian
name: Peak, Rachael
name: Simpson, Dawn
name: Walker, Frederick Rohan
name: Nilsson, Michael
name: Pollack, Michael
name: English, Coralie
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 3. Research priorities.
Testing the well-posedness of characteristic evolution of scalar waves
Creators: name: Babiuc, M. C.
name: Kreiss, H-O.
name: Winicour, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent results have revealed a critical way in which lower order terms affect the well-posedness of the characteristic initial value problem for the scalar wave equation. The proper choice of such terms can make the Cauchy problem for scalar waves well posed even on a background spacetime with closed lightlike curves. These results provide new guidance for developing stable characteristic evolution algorithms. In this regard, we present here the finite difference version of these recent results and implement them in a stable evolution code. We describe test results which validate the code and exhibit some of the interesting features due to the lower order terms.
description: 22 pages, 15 figures Submitted to CQG
Additional file 2 of Special orthopaedic geriatrics (SOG) - a new multiprofessional care model for elderly patients in elective orthopaedic surgery: a study protocol for a prospective randomized controlled trial of a multimodal intervention in frail patients with hip and knee replacement
Creators: name: Kappenschneider, Tobias
name: Maderbacher, Günther
name: Weber, Markus
name: Greimel, Felix
name: Holzapfel, Dominik
name: Parik, Lukas
name: Schwarz, Timo
name: Leiss, Franziska
name: Knebl, Michael
name: Reinhard, Jan
name: Schraag, Amadeus Dominik
name: Thieme, Max
name: Turn, Agathe
name: Götz, Julia
name: Zborilova, Magdalena
name: Pulido, Loreto C.
name: Azar, Fady
name: Spörrer, Jan-Frederik
name: Oblinger, Britta
name: Pfalzgraf, Frederik
name: Sundmacher, Leonie
name: Iashchenko, Iryna
name: Franke, Sebastian
name: Trabold, Benedikt
name: Michalk, Katrin
name: Grifka, Joachim
name: Meyer, Matthias
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy

description: Additional file 2. SPIRIT Checklist.
The regular state in higher-order gravity
Creators: name: Cotsakis, Spiros
name: Kadry, Seifedine
name: Trachilis, Dimitrios
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the higher-order gravity theory derived from the quadratic lagrangian $R+εR^2$ in vacuum as a first-order (ADM-type) system with constraints, and build time developments of solutions of an initial value formulation of the theory. We show that all such solutions, if analytic, contain the right number of free functions to qualify as general solutions of the theory. We further show that any regular analytic solution which satisfies the constraints and the evolution equations can be given in the form of an asymptotic formal power series expansion.
description: v2: 21 pages, new author, various improvements, IJMPA in press
Transverse relativistic effects in paraxial wave interference
Creators: name: Bliokh, Konstantin Y.
name: Izdebskaya, Yana V.
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We consider relativistic deformations of interfering paraxial waves moving in the transverse direction. Owing to superluminal transverse phase velocities, noticeable deformations of the interference patterns arise when the waves move with respect to each other with non-relativistic velocities. Similar distortions also appear on a mutual tilt of the interfering waves, which causes a phase delay analogous to the relativistic time delay. We illustrate these observations by the interference between a vortex wave beam and a plane wave, which exhibits a pronounced deformation of the radial fringes into a fork-like pattern (relativistic Hall effect). Furthermore, we describe an additional relativistic motion of the interference fringes (a counter-rotation in the vortex case), which become noticeable at the same non-relativistic velocities.
description: 9 pages, 4 figures, to appear in J. Opt. (special issue "Singular Optics")
title: Project Report NOAA Ship Oscar Elton Sette, Project SE-19-03
titleType: Other
Creators: name: United States. National Marine Fisheries Service.
name: Pacific Islands Fisheries Science Center (U.S.)
Publisher: name: United States. National Marine Fisheries Service. Pacific Islands Fisheries Science Center (U.S.)
Year: 2019

description: PIFSC project report ; Project SE-19-03
Zwischen PopArt und Brutalismus - Projekte und Förderziele der Wüstenrot Stiftung
Creators: name: Kurz, Philip
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2017

description: -
description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 63 (2017): ICOMOS – Hefte des Deutschen Nationalkomitees
Additional file 1 of Chronic kidney disease in primary care: risk of cardiovascular events, end stage kidney disease and death
Creators: name: Borg, Rikke
name: Kriegbaum, Margit
name: Grand, Mia Klinten
name: Lind, Bent
name: Andersen, Christen Lykkegaard
name: Persson, Frederik
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Marine Biology

description: Supplementary Material 1
title: Ασκήσεις ακραίων καταστάσεων σε χρηματοπιστωτικά ιδρύματα: εμπειρική ανάλυση στις ευρωπαϊκές τράπεζες
Creators: name: Φραγκιαδακης Παντελεημων
Publisher: name: Technical University of Crete
Year: 2016

description: Το ευρωπαϊκό τραπεζικό σύστημα βρίσκεται υπό σημαντική πίεση από την αρχή της χρηματοπιστωτικής κρίσης το 2007-2008. Εκτός από την παγκόσμια πιστωτική κρίση, η Ευρωπαϊκή κρίση χρέους έχει δημιουργήσει πρόσθετες δυσκολίες. Σε απάντηση στην ανάγκη για την αύξηση της διαφάνειας και της σταθερότητας στο ευρωπαϊκό χρηματοπιστωτικό / τραπεζικό σύστημα και τον εντοπισμό των αδυναμιών στις δομές του κεφαλαίου των τραπεζών, έχουν οι πανευρωπαϊκές ασκήσεις προσομοίωσης ακραίων καταστάσεων που εκτελούνται από την European Banking Authority. O στόχος της παρούσας εργασίας είναι να εξετάσει την οικονομική απόδοση των ευρωπαϊκών τραπεζών που συμμετείχαν στα τεστ αντοχής της ΕΒΑ. Η ανάλυση λαμβάνει υπόψη τα πραγματικά οικονομικά δεδομένα των τραπεζών, βάσει του Κεφαλαίου, τα περιουσιακά στοιχεία, την Διοίκηση, τα κέρδη, την ρευστότητα, καθώς και τα αποτελέσματα των τεστ αντοχής. Η αξιολόγηση της οικονομικής ευρωστίας των τραπεζών γίνεται μέσω μιας ισχυρής πολυκριτήριας μεθοδολογίας κατάταξης. Η τελευταία χρησιμοποιείται για τη διάκριση μεταξύ των τραπεζών, η οποίες απέτυχαν να πληρούν τις ελάχιστες προϋποθέσεις στις κεφαλαιακές απαιτήσεις που επιβάλλονται από την EBA, και τις καλά κεφαλαιοποιημένες .
Magnetic moments of the low-lying $J^P=\,1/2^-$, $3/2^-$ $Λ$ resonances within the framework of the chiral quark model
Creators: name: Torres, A. Martínez
name: Khemchandani, K. P.
name: Sharma, Neetika
name: Dahiya, Harleen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The magnetic moments of the low-lying spin-parity $J^P=$ $1/2^-$, $3/2^-$ $Λ$ resonances, like, for example, $Λ(1405)$ $1/2^-$, $Λ(1520)$ $3/2^-$, as well as their transition magnetic moments, are calculated using the chiral quark model. The results found are compared with those obtained from the nonrelativistic quark model and those of unitary chiral theories, where some of these states are generated through the dynamics of two hadron coupled channels and their unitarization.
title: Σχεδιασμός και πλάνο βελτιστοποίησης χώρου ερευνητικού κέντρου στην Ανταρκτική

Creators: name: Αρβανιτη Ελενη
Publisher: name: Technical University of Crete
Year: 2016

description: Η παρούσα εργασία ειδικεύεται στη βελτιστοποίηση και σχεδίαση των διαθέσιμων αναδιατασσόμενων χώρων ενός ερευνητικού κέντρου στην Ανταρκτική. Λαμβάνοντας υπόψιν τις ακραίες καιρικές-κλιματολογικές συνθήκες του τόπου και έπειτα από εκτενή μελέτη και πληροφόρηση σχετικά με τις ήδη υπάρχουσες βάσεις-σταθμούς εργασίας από επιστημονικές ομάδες, προγραμματίστηκε καταλλήλως και υλοποιήθηκε ένα βέλτιστο πλάνο μεταβλητότητας των χώρων εντός του κτιρίου, με γνώμονα πάντοτε τις εκάστοτε ανάγκες των παρευρισκόμενων ατόμων καθ’ όλη τη διάρκεια διαμονής τους στον ερευνητικό σταθμό. Σαφώς, η συγκεκριμένη κατασκευή πραγματοποιήθηκε αξιοποιώντας τεχνολογίες μηχανικής μεταβολής χώρων και έξυπνων υλικών.
I. Dialoge: Konservieren und Weiterbauen. Dialog I. 2: Denkmalerhaltung durch Interventionen - Weiterbauen am Denkmal? Einführung
Creators: name: Wiezorek, Elena
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2017

description: -
description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 63 (2017): ICOMOS – Hefte des Deutschen Nationalkomitees
title: Εφαρμογή του αλγορίθμου Tabu Search για την επίλυση του προβλήματος βέλτιστου σχεδιασμού γραμμής προϊόντων
title: Optimizing product line designs with Tabu Search
Creators: name: Μπαλαρας Γεωργιος
Publisher: name: Technical University of Crete
Year: 2016

description: Στην παρούσα εργασία θα γίνει εφαρμογή του αλγορίθμου Tabu Search (Απαγορευ-μένη Έρευνα, Fred W. Glover 1986) στο πρόβλημα βέλτιστου σχεδιασμού γραμμής προϊ-όντων.  Σκοπός είναι ο σχεδιασμός μιας γραμμής προϊόντων, ο συνδυασμός των οποίων θα ικανοποιεί κάποιους στόχους που έχουν τεθεί από την εταιρεία.  Υπάρχουν διάφοροι στόχοι που σχετίζονται με την επίλυση του προβλήματος.

Εν προκειμένω, ο στόχος είναι η βελτιστοποίηση του κέρδους της εταιρείας από την εισαγωγή της γραμμής των προϊόντων, σε μια δεδομένη ανταγωνιστική αγορά.  Τα προϊ-όντα προς σχεδιασμό αναλύονται στα χαρακτηριστικά τους, τα οποία στη συνέχεια συν-δυάζονται με διαφορετικούς τρόπους για να επιτευχθεί βελτιστοποίηση του στόχου.   Το πρόβλημα κατατάσσεται στα NP – hard προβλήματα, επειδή οι δυνατοί συνδυασμοί των χαρακτηριστικών των προϊόντων στον πραγματικό κόσμο είναι τόσοι πολλοί, που δεν μπορούν να ελεγχθούν σε πολυωνυμικό χρόνο.

Για το λόγο αυτό έγιναν προσπάθειες επίλυσης του προβλήματος, με ευρετικές και μεθευρετικές μεθόδους οι οποίες προσεγγίζουν μια «καλή» λύση, χωρίς να εγγυώνται για το ολικό πραγματικό βέλτιστο.  Στο πρόβλημα θα εφαρμοστεί ο μεθευρετικός αλγόριθμος τοπικής έρευνας  Tabu Search, ο οποίος θα παραμετροποιηθεί καταλλήλως.
Additional file 1 of Preparedness of primary health care facilities on implementation of essential non-communicable disease interventions in Osun State South-West Nigeria: a rural–urban comparative study
Creators: name: Akinwumi, Adebowale Femi
name: Esimai, Olapeju Adefunke
name: Arije, Olujide
name: Ojo, Temitope Olumuyiwa
name: Esan, Oluwaseun Taiwo
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Computational Biology

description: Additional file 1: Appendix I. Tracer Items and Domains for PHC Facility NCD Service Readiness Assessment. Appendix 2. Comparison of availability of trained staff, IEC materials and guidelines in rural and urban PHCfacilities for implementation of essential NCD interventions.
Analysis of a Quantum Error Correcting Code using Quantum Process Calculus
Creators: name: Davidson, Timothy A. S.
name: Gay, Simon J.
name: Nagarajan, Rajagopal
name: Puthoor, Ittoop Vergheese
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: D.3.1; F.3.1

description: We describe the use of quantum process calculus to describe and analyze quantum communication protocols, following the successful field of formal methods from classical computer science. The key idea is to define two systems, one modelling a protocol and one expressing a specification, and prove that they are behaviourally equivalent. We summarize the necessary theory in the process calculus CQP, including the crucial result that equivalence is a congruence, meaning that it is preserved by embedding in any context. We illustrate the approach by analyzing two versions of a quantum error correction system.
description: In Proceedings QPL 2011, arXiv:1210.0298
Deutscher Preis für Denkmalschutz
Creators: name: Koch, Uwe
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2017

description: -
description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 63 (2017): ICOMOS – Hefte des Deutschen Nationalkomitees
Verification of Γ$_{7}$ symmetry assignment for the top valence band of ZnO by magneto-optical studies of the free A exciton state
Creators: name: Ding, Lu
name: Yang, Chunlei
name: He, Hongtao
name: Jiang, Fengyi
name: Wang, Jiannong
name: Tang, Zikang
name: Foreman, Bradley A.
name: Ge, Weikun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The circularly-polarized and angular-resolved magneto-photoluminescence spectroscopy was carried out to study the free A exciton 1S state in wurtzite ZnO at 5 K.
description: 4 figures, 16 pages. arXiv admin note: substantial text overlap with arXiv:0706.3965
title: Εναλλακτικές μορφές τουρισμού στην Κρήτη, μία ποσοτική και ποιοτική διερεύνηση
Creators: name: Κλαδου Κυριακη
Publisher: name: Technical University of Crete
Year: 2016

description: Στο πρώτο κεφάλαιο της παρούσας εργασίας παρουσιάζονται οι έννοιες του τουρισμού και του εναλλακτικού τουρισμού, αναφέρονται οι θετικές και οι αρνητικές επιπτώσεις του εναλλακτικού τουρισμού, αναλύονται οι διάφορες μορφές, και στη συνέχεια αναλύεται το φαινόμενο του Ιατρικού τουρισμού, του Συνεδριακού και του Αγροτουρισμού, στην Κρήτη. Τέλος, γίνεται σύντομη αναφορά των υποδομών της Περιφέρειας Κρήτης και των αφίξεων των τελευταίων ετών.
Στο δεύτερο κεφάλαιο παρουσιάζεται η βιβλιογραφική ανασκόπηση από σχετικές δημοσιεύσεις και άρθρα σε επιστημονικά περιοδικά, σχετικά με έρευνες που έχουν γίνει στον τομέα του τουρισμού.
Στο τρίτο κεφάλαιο αφότου γίνει ανάλυση της μεθοδολογίας της έρευνας, γίνεται αποτίμηση και σχολιασμός των αποτελεσμάτων των ερευνών που πραγματοποιήθηκαν  για τα έτη 2013, 2014 και 2015, καθώς αναλύονται και συγκρίνονται  διαχρονικά τα αποτελέσματα.
Τέλος, στο τέταρτο κεφάλαιο παρουσιάζονται κάποια συμπεράσματα και μελλοντικές προοπτικές σχετικά με την πορεία του εναλλακτικού τουρισμού στην Κρήτη και γενικότερα στην Ελλάδα, καθώς και τα σημεία που χρήζουν βελτίωση ώστε να αναπτυχθεί το φαινόμενο του εναλλακτικού τουρισμού.
Teilnehmerinnen und Teilnehmer
Creators: name: Redaktion, Die
Publisher: name: ICOMOS – Hefte des Deutschen Nationalkomitees
Year: 2017

description: -
description: ICOMOS – Hefte des Deutschen Nationalkomitees, Bd. 63 (2017): ICOMOS – Hefte des Deutschen Nationalkomitees
Additional file 1 of Surveillance of diphtheria in the Netherlands between 2000–2021: cutaneous diphtheria supersedes the respiratory form
Creators: name: Elsinga, Jelte
name: van Meijeren, Dimphey
name: Reubsaet, Frans
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1.
title: Εφαρμογή για την διαχείριση ενός ασύρματου δικτύου αισθητήρων, βασισμένο στο Arduino για Online ύδρευση
title: A Web of things Arduino wireless, sensor-based automatic plant watering system application
Creators: name: Σμυρναιος Δημητριος
Publisher: name: Technical University of Crete
Year: 2020

description: Αντικείμενο της παρούσας διπλωματικής εργασίας αποτελεί η σχεδίαση και υλοποίηση ενός συστήματος αυτόματης άρδευσης αγροτεμαχίου. Το σύστημα αποτελείται από ένα ασύρματο δίκτυο αισθητήρων και ένα ενσωματωμένο σύστημα (embedded system) για την καταγραφή των φυσικών φαινομένων (θερμοκρασιών, υγρασίας ατμόσφαιρας και εδάφους), ένα σύστημα μεταφόρτωσης των δεδομένων μέσω ασύρματου δικτύου 4G σε ένα web server χρησιμοποιώντας web services και την επακόλουθη αποθήκευση τους σε μία σχεσιακή βάση δεδομένων (postgres). Στη συνέχεια, περιλαμβάνει την κατασκευή RESTful webservices για τη διαχείριση των δεδομένων, καθώς και την τροποποίηση των παραμέτρων μέσω των οποίων ο αλγόριθμος επιλέγει αν θα ξεκινήσει ή όχι την άρδευση του αγροτεμαχίου. Η διαχείριση των δεδομένων των web services γίνεται μέσω μιας φιλικής προς το χρήστη διεπαφής έτσι ώστε να είναι προσιτό σε όσο το δυνατόν μεγαλύτερο κοινό. Ακόμη έχει δημιουργηθεί μια εφαρμογή (Android app) και τα αντίστοιχα restful webservices για το Android app.
Στα επόμενα κεφάλαια γίνεται ανάλυση του κάθε υποσυστήματος. Η σχεσιακή βάση δεδομένων σχεδιάστηκε ακολουθώντας τα πρότυπα για τη καταγραφή «μετρήσεων» αισθητήρων όπως αυτά έχουν οριστεί από την Open Geospatial Consortium (OGC). Για την κατασκευή των  διεπαφών της διαδικτυακής εφαρμογής (web application), χρησιμοποιήθηκε η γλώσσα προγραμματισμού Java και το spring boot framework, σε συνδυασμό με το Javascript AngualrJS framework καθώς και άλλων ανοιχτών βιβλιοθηκών. Τα webservices για την Android εφαρμογή δημιουργήθηκαν χρησιμοποιώντας dotnetcore framework και τη γλώσσα προγραμματισμού C#. Ενώ για την ίδια την εφαρμογή  Android χρησιμοποιήθηκε η πλατφόρμα Xamarin. Για το διαμοιρασμό της web εφαρμογής χρησιμοποιήθηκε ένας διακομιστής σε virtual machine. Η σχεσιακή βάση δεδομένων  (postgres), η εφαρμογή Java springboot καθώς και η εφαρμογή dotnetcore λειτουργούν σε 3 dockers που επικοινωνούν μεταξύ τους απομονωμένοι από το υπόλοιπο λειτουργικό σύστημα.
title: Arduino wireless sensor based automatic plant watering system
title: Ασύρματο σύστημα αισθητήρων βασισμένο στο Arduino για το αυτόματο πότισμα των φυτών
Creators: name: Βρατσανος Γεωργιος
Publisher: name: Technical University of Crete
Year: 2020

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η σχεδίαση, η υλοποίηση ενός ενσωματωμένου συστήματος αυτόματης άρδευσης, καθώς και της διασύνδεσης του σε έναν διακομιστή (server).
Στα επόμενα κεφάλαια αρχικά περιγράφονται τα ενσωματωμένα συστήματα ως προς την καθημερινή τους χρήση, τα υλικά που το αποτελούν, καθώς και οι τεχνολογίες υλοποίησης τους ανάλογα με τις διεργασίες που είναι υποχρεωμένα να εκτελούν. Έπειτα περιγράφονται αναλυτικά όλα τα μέρη του παρόντος ενσωματωμένου συστήματος τόσο σε επίπεδο υλικού (hardware) όσο και σε επίπεδο λογισμικού (software), καθώς και οι προδιαγραφές, τα επίπεδα σχεδίασης και υλοποίησης του. Το αυτόματο σύστημα αποτελείται από απομακρυσμένες συσκευές (Wireless Sensors Unit) όπου περιέχουν αισθητήρες (temperature, humidity, etc.), σταθμό βάσης (Wireless Base Unit), ηλεκτροβάνες, με στόχο την καταγραφή των συνθηκών του χωραφιού αλλά και την διαχείρισή του σε επίπεδο άρδευσης.
Με την υλοποίηση του συστήματος εξάγονται συμπεράσματα τόσο για την ίδια την ύπαρξη του, όσο και για την βελτίωσή του. Συμπεράσματα για την χρήση ενός ενσωματωμένου στην άρδευση σε σχέση με τον παραδοσιακό τρόπο με στόχο την μείωση της κατανάλωσης του νερού, αλλά και για την μείωση της κατανάλωσης του ίδιου του ενσωματωμένου και την χρήση ηλιακής ενέργειας.
Στο τελευταίο κεφάλαιο της εργασίας παρουσιάζονται βελτιώσεις του συστήματος όπως στην επικοινωνία του ενσωματωμένου με τον διακομιστή, καθώς και μελλοντικές προεκτάσεις όπως η απομακρυσμένη ανάπτυξη του (remote development).
NANOMATERIALS TOXICITY TO HUMANS AND PLANTS
Creators: name: VINAYATARI
name: GNANSANGEETHA D
name: KARTHIK KANNAN
Publisher: name: Zenodo
Year: 2023
Subjects: Development, Human Being, Impact on Environment, Nanotechnology, Nanotoxicology, Sustainability, Toxicity.

description: Abstract
Nanotechnology is developing very fast and attracting great public interest in various fields such as agriculture, biomedicine, cosmetics, industry, pollution control, etc. In recent decades, research and development have developed rapidly to apply nanotechnology to solve many problems that make life easier. It is a great effort of researchers and scientists to overcome many challenges with the help of this new technology. However, there is much evidence of the adverse effects of nanomaterials on the environment, so they have become a new environmental problem under the title of "nanotoxicology". This review paper aims to summarise the effects of nanotechnology on plants and humans, sources, distribution, accumulation, bioavailability, and challenges for future sustainable development using current literature.
Additional file 3 of Special orthopaedic geriatrics (SOG) - a new multiprofessional care model for elderly patients in elective orthopaedic surgery: a study protocol for a prospective randomized controlled trial of a multimodal intervention in frail patients with hip and knee replacement
Creators: name: Kappenschneider, Tobias
name: Maderbacher, Günther
name: Weber, Markus
name: Greimel, Felix
name: Holzapfel, Dominik
name: Parik, Lukas
name: Schwarz, Timo
name: Leiss, Franziska
name: Knebl, Michael
name: Reinhard, Jan
name: Schraag, Amadeus Dominik
name: Thieme, Max
name: Turn, Agathe
name: Götz, Julia
name: Zborilova, Magdalena
name: Pulido, Loreto C.
name: Azar, Fady
name: Spörrer, Jan-Frederik
name: Oblinger, Britta
name: Pfalzgraf, Frederik
name: Sundmacher, Leonie
name: Iashchenko, Iryna
name: Franke, Sebastian
name: Trabold, Benedikt
name: Michalk, Katrin
name: Grifka, Joachim
name: Meyer, Matthias
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy

description: Additional file 3. Administrative Information.
Infrared Structure at NNLO Using Antenna Subtraction
Creators: name: Currie, James
name: Glover, E. W. N.
name: Wells, Steven
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the infrared structure of hadron-hadron collisions at next-to-next-to leading order using the antenna subtraction method. The general form of the subtraction terms is presented for double real, real-virtual and double virtual contributions. At NLO and NNLO it is shown that the virtual and double virtual subtraction terms can be written in terms of integrated dipoles, formed by systematically combining the mass factorisation contributions and integrated antenna functions. The integrated dipoles describing $\ell$ unresolved partons, denoted $\bs{J}_{2}^{(\ell)}$, are related to Catani's IR singularity operators, $\bs{I}_{ij}^{(\ell)}(\eps)$. It is shown that the IR pole structure of the virtual and double virtual contributions can be written as a sum over integrated dipoles within the antenna subtraction formalism and the master expressions analogous to Catani's one- and two-loop factorisation formulae are derived. To demonstrate the techniques described in this paper, we apply antenna subtraction to the production of two gluon jets via quark-antiquark scattering at NLO and NNLO. Double real, real-virtual and double virtual subtraction terms are explicitly derived for the leading colour NNLO contribution.
description: 65 pages, 7 figures, minor changes, version accepted by JHEP
Lensless Imaging by Compressive Sensing
Creators: name: Huang, Gang
name: Jiang, Hong
name: Matthews, Kim
name: Wilford, Paul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we propose a lensless compressive imaging architecture. The architecture consists of two components, an aperture assembly and a sensor. No lens is used. The aperture assembly consists of a two dimensional array of aperture elements. The transmittance of each aperture element is independently controllable. The sensor is a single detection element. A compressive sensing matrix is implemented by adjusting the transmittance of the individual aperture elements according to the values of the sensing matrix. The proposed architecture is simple and reliable because no lens is used. The architecture can be used for capturing images of visible and other spectra such as infrared, or millimeter waves, in surveillance applications for detecting anomalies or extracting features such as speed of moving objects. Multiple sensors may be used with a single aperture assembly to capture multi-view images simultaneously. A prototype was built by using a LCD panel and a photoelectric sensor for capturing images of visible spectrum.
description: Accepted ICIP 2013. 5 Pages, 7 Figures. arXiv admin note: substantial text overlap with arXiv:1302.1789
XITOY VA O'ZBEK INTERNET TILLARIDAGI QISQARTMALARNI QIYOSIY TATQIQ QILISH
Creators: name: Djurayev, Dilshod
name: Sayfiddinova, Marjona
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqola Xitoy va o‘zbek internet tillaridagi qisqartmalarni qiyosiy tahlil qilishga bag‘ishlangan. Maqolada qisqartmalar tushunchasi, ularning internet tilidagi o‘rni va xususiyatlari o‘rganiladi. Shuningdek, Xitoy va o‘zbek internet tillarida qisqartmalar shakllanishi, ularning asosiy turlari va qo‘llanilish xususiyatlari tahlil qilinadi. Tadqiqot natijasida har ikkala tildagi qisqartmalar tizimidagi umumiylik va farqlar aniqlanib, internet lingvistikasi hamda tarjimashunoslik nuqtayi nazaridan muhim xulosalar chiqariladi.
Additional file 1 of The association between study conditions and hair cortisol in medical students in Germany – a cross-sectional study
Creators: name: Heming, Meike
name: Angerer, Peter
name: Apolinário-Hagen, Jennifer
name: Nater, Urs Markus
name: Skoluda, Nadine
name: Weber, Jeannette
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Translated version of the StrukStud Items (translation provided by the authors of Schmidt et al. 2019).
Nonperturbative resummation of de Sitter infrared logarithms in the large-N limit
Creators: name: Serreau, Julien
name: Parentani, Renaud
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the O(N) scalar field theory with quartic self-coupling in de Sitter space. When the field is light in units of the expansion rate, perturbative methods break down at very low momenta due to large infrared logarithmic terms. Using the nonperturbative large-N limit, we compute the four-point vertex function in the deep infrared regime. The resummation of an infinite series of perturbative (bubble) diagrams leads to a modified power law which is analogous to the generation of an anomalous dimension in critical phenomena. We discuss in detail the role of high momentum (subhorizon) modes, including the issue of renormalization, and show that they influence the dynamics of infrared (superhorizon) modes only through a constant renormalization factor. This provides an explicit example of effective decoupling between high and low energy physics in an expanding space-time.
description: 19 pages, 4 figures; References added, typos corrected, published version (PRD)