cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Angular clustering properties of the DESI QSO target selection using DR9 Legacy Imaging Surveys
Creators: name: Chaussidon, Edmond
name: Yèche, Christophe
name: Palanque-Delabrouille, Nathalie
name: de Mattia, Arnaud
name: Myers, Adam D.
name: Rezaie, Mehdi
name: Ross, Ashley J.
name: Seo, Hee-Jong
name: Brooks, David
name: Gaztañaga, Enrique
name: Kehoe, Robert
name: Levi, Michael E.
name: Newman, Jeffrey A.
name: Tarlé, Gregory
name: Zhang, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: The quasar target selection for the upcoming survey of the Dark Energy Spectroscopic Instrument (DESI) will be fixed for the next five years. The aim of this work is to validate the quasar selection by studying the impact of imaging systematics as well as stellar and galactic contaminants, and to develop a procedure to mitigate them. Density fluctuations of quasar targets are found to be related to photometric properties such as seeing and depth of the Data Release 9 of the DESI Legacy Imaging Surveys. To model this complex relation, we explore machine learning algorithms (Random Forest and Multi-Layer Perceptron) as an alternative to the standard linear regression. Splitting the footprint of the Legacy Imaging Surveys into three regions according to photometric properties, we perform an independent analysis in each region, validating our method using eBOSS EZ-mocks. The mitigation procedure is tested by comparing the angular correlation of the corrected target selection on each photometric region to the angular correlation function obtained using quasars from the Sloan Digital Sky Survey (SDSS)Data Release 16. With our procedure, we recover a similar level of correlation between DESI quasar targets and SDSS quasars in two thirds of the total footprint and we show that the excess of correlation in the remaining area is due to a stellar contamination which should be removed with DESI spectroscopic data. We derive the Limber parameters in our three imaging regions and compare them to previous measurements from SDSS and the 2dF QSO Redshift Survey.
description: 20 pages, 23 figures
Συγκριτική Διερεύνηση Μεθόδων Αποτίμησης Κτίριων Οπλισμένου Σκυροδέματος έναντι Σεισμικής Δράσης
Creators: name: Σαμαρά, Μαρία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Σεισμική αποτίμηση
Δυναμική Φασματική Ανάλυση
Ανελαστική Στατική Ανάλυση
Ευρωκώδικας 8
ΚΑΝ.ΕΠΕ
Seismic Performance Assessment
Dynamic Spectrum Analysis
Nonlinear Static Analysis (Pushover Analysis)
Eurocode 8
KAN.EPE

description: Στα πλαίσια του μεταπτυχιακού προγράμματος σπουδών «Αειφόρος Σχεδιασμός Τεχνικών Έργων έναντι σεισμού και άλλων φυσικών κινδύνων - ΑΣΤΕ.» του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης εκπονήθηκε η παρούσα διπλωματική εργασία με τίτλο «ΣΥΓΚΡΙΤΙΚΗ ΔΙΕΡΕΥΝΗΣΗ ΜΕΘΟΔΩΝ ΑΠΟΤΙΜΗΣΗΣ ΚΤΙΡΙΩΝ ΟΠΛΙΣΜΕΝΟΥ ΣΚΥΡΟΔΕΜΑΤΟΣ ΕΝΑΝΤΙ ΣΕΙΣΜΙΚΗΣ ΔΡΑΣΗΣ». Σκοπός της παρούσας διπλωματικής εργασίας είναι η αποτίμηση της σεισμικής συμπεριφοράς μιας κατασκευής από οπλισμένο σκυρόδεμα, η οποία βρίσκεται στη γωνία της οδού Μοσκώφ και της Πλατείας Δημοκρατίας και αποτελείται συνολικά από το υπόγειο, το ισόγειο και δύο ορόφους, με τις μεθόδους που προτείνονται από τα σύγχρονα κανονιστικά κείμενα του EC8 και ΚΑΝ.ΕΠΕ. Οι μέθοδοι που εφαρμόστηκαν είναι η Δυναμική Φασματική Ανάλυση και η Ανελαστική στατική ανάλυση, οι οποίες πραγματοποιήθηκαν με βάση τις διατάξεις των ανωτέρω κανονιστικών κειμένων. Κατά την αποτίμηση του υφιστάμενου κτιρίου λαμβάνεται θεωρητικά στάθμη επιτελεστικότητας «Σημαντικές βλάβες» (Β). Για την ανάλυση της γεωμετρίας της κατασκευής, πραγματοποιείται προσομοίωση των ιδιοτήτων των υλικών, των χαρακτηριστικών των διατομών και των επιβαλλόμενων φορτίσεων στο λογισμικό SAP2000 v.23. Τέλος, πραγματοποιείται έλεγχος επάρκειας των δομικών στοιχείων του κτιρίου σε κάμψη και διάτμηση, βάσει των κανονιστικών κειμένων του EC8 και ΚΑΝ.ΕΠΕ και παρουσιάζονται τα αποτελέσματα για τα δομικά στοιχεία του κτιρίου
description: The present thesis entitled “COMPARATIVE INVESTIGATION OF METHODS FOR THE ASSESSMENT OF REINFORCED CONCRETE BUILDINGS AGAINST SEISMIC ACTION”, was carried out as part of the postgraduate program «Earthquake Engineering and Seismic Design of Structures» of Aristotle University of Thessaloniki. The purpose of this thesis is to assess the seismic behavior of an existing two-storey building with a basement, constructed with reinforced concrete, which is located at the corner of Moskof Street and Democracy Square in Thessaloniki. The seismic behavior of the building is studied with the proposed methods of the regulatory texts of EC8 and KAN.EPE, and the implementation of the study was carried out using the Dynamic spectrum analysis and the Nonlinear static analysis (Pushover analysis). The performance level taken in the assessment of the existing building is ‘Significant Damage’ (B). For the analysis of the structure, a simulation of the material properties, the cross-sectional characteristics, and the applied loads, is conducted in SAP2000 v.23 software. Finally, the adequacy of the structural elements of the building in bending and shear is calculated and the results for these elements are presented
Ζητήματα από την κατ’ εξαίρεση νομιμοποίηση των ΑΕΔΑΔΠ στην πολιτική δίκη
Creators: name: Πετρίδης, Δημήτριος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Εταιρίες Διαχείρισης Απαιτήσεων Ν. 4354/2015
κατ’ εξαίρεση νομιμοποίηση
ΟλΑΠ 1/2023
claims management companies Law 4354/2015
exceptional legalization
Plenum of the Supreme Court of Greece 1/2023

description: Η παρούσα μελέτη διερευνά το ζήτημα της νομιμοποίησης των εταιριών διαχείρισης απαιτήσεων του Ν. 4354/2015 ενώπιον των πολιτικών δικαστηρίων όταν λειτουργούν για λογαριασμό των εταιριών απόκτησης απαιτήσεων του Ν. 3156/2003. Το ζήτημα αυτό απασχόλησε πρόσφατα τα ελληνικά δικαστήρια και οδήγησε στη σχολιαζόμενη απόφαση ΟλΑΠ 1/2023. Αρχικά επιχειρείται μία συνοπτική παρουσίαση του μηχανισμού τιτλοποίησης απαιτήσεων και της οικονομικής του λειτουργίας στις συναλλαγές. Στη συνέχεια εξετάζονται οι διάφορες επιστημονικές τοποθετήσεις που προηγήθηκαν της έκδοσης της απόφασης ΟλΑΠ 1/2023, ενώ στη συνέχεια επιχειρείται η εξέταση του ζητήματος με κύριο κριτήριο τη βούληση του ιστορικού νομοθέτη. Μετά το τέλος της εκατέρωθεν επιχειρηματολογίας υποστηρίζεται η θέση του γράφοντος υπέρ της μειοψηφίας της απόφασης ΟλΑΠ 1/2023
description: This study investigates the issue of the legalization of the claims management companies of Law 4354/2015 before the civil courts when they operate on behalf of the claims acquisition companies of Law 3156/2003. This issue recently occupied the Greek courts and led to the commented decision Plenum of the Supreme Court of Greece number 1/2023. Initially, a brief presentation of the securitization mechanism and its economic function in transactions is attempted. Then the various scientific positions that preceded the issuance of the Supreme Court 1/2023 decision are examined, while then an attempt is made to examine the issue with the will of the historical legislator as the main criterion. After the end of the arguments on both sides, the position of the writer is supported in favor of the minority of the decision of the Supreme Court of Greece number 1/2023
Nonlinear evolution of a morphological instability in a strained epitaxial film
Creators: name: Aqua, Jean-Noel
name: Frisch, Thomas
name: Verga, Alberto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A strained epitaxial film deposited on a deformable substrate undergoes a morphological instability relaxing the elastic energy by surface diffusion. The nonlinear and nonlocal dynamical equations of such films with wetting interactions are derived and solved numerically in two and three dimensions. Above some critical thickness, the surface evolves towards an array of islands separated by a wetting layer. The island chemical potential decreases with its volume, so that the system experiences a non-interrupted coarsening described by power laws with a marked dimension dependence.
description: 4 pages, 6 figures
The total synthesis of (+-)-prezizanol and (+-)-prezizaene
Creators: name: Marrs, Peter Scot
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes work leading to the completion of a total synthesis of the sesquiterpenoids (±)-prezizanol (188) and (±)-prezizaene (6). The known alcohol 128 was transformed, in three steps, into the endo-monochloride 156. The commercially available alcohol 129 was converted, in a two step sequence, into the vinyl iodide 127. Palladium catalyzed coupling of the vinyl iodide 127 with an organozinc compound derived from the chloride 156 provided the bicyclo[3.1.0]hexane 165. The bicyclo[3.1.0]hexane 165 was elaborated, in three steps, into the ester 172. Treatment of this ester with lithium diisopropylamide, followed by kinetic protonation of the resultant enolate anion, provided the endo-(1-alkenyl)-bicyclo[3.1.0]hex-2-ene 123, which cleanly underwent a Cope rearrangement to provide the bicyclo[3.2.1]octadiene 121. An attempt to cleanly synthesize 121 via the Cope rearrangement of the exo-(1-alkenyl)bicyclo-[3.1.0]hex-2-ene 122 was unsuccessful. A six step sequence was used to synthesize the mixture of silyl ethers 186 and 187 (88:12, respectively) from the bicyclo[3.2.1]octadiene 121. (±)-Prezizanol (188) was prepared, in a series of seven steps, from the silyl ether 186. Dehydration of (±)-prezizanol (188) provided (±)-prezizaene (6) in 2.2% overall yield from the alcohol 128. [Formula Omitted]
Strongly bound fermion pairs on a ring: a composite-boson approach
Creators: name: Cuestas, E.
name: Cormick, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Particles made of two fermions can in many cases be treated as elementary bosons, but the conditions for this treatment to be valid are nontrivial. The so-called "coboson formalism" is a powerful tool to tackle compositeness effects relevant for instance for exciton physics and ultracold atomic dimers. A key element of this theory is an ansatz for the ground state of N pairs, built from the single-pair ground state combined with the exclusion principle. We show that this ansatz can fail in one-dimensional systems which fulfill the conditions expected to make the ansatz valid. Nevertheless, we also explain how coboson theory can recover the correct ground state. Thus, our work highlights limitations and strengths of the formalism and leads to a better treatment of composite bosons.
description: 10 pages including appendices
title: Association entre une faiblesse des muscles de la hanche et la tendinopathie patellaire
title: Association entre une faiblesse des muscles de la hanche et la tendinopathie patellaire
titleType: AlternativeTitle
Creators: name: Da Silva Ferreira Pais, Rui Filipe
name: Perazzo, Fabio
Publisher: name: Unknown
Year: 0
Subjects: subject: Tendinopathie patellaire
subject: Muscles de la hanche
subject: Force musculaire
subject: Evaluation
subject: hesav TB Phy

description: Introduction : La tendinopathie patellaire (TP) touche principalement une population active et présente un risque de chronicisation important. Elle se caractérise par des douleurs et une réduction de fonction, perturbant la pratique sportive. La littérature montre que les muscles de la hanche jouent un rôle majeur dans la biomécanique du saut et contribuent à diminuer la charge sur le tendon patellaire. Cette revue de littérature a pour objectif d'évaluer s’il existe une association entre une faiblesse des muscles de la hanche et la TP. Méthodologie : La recherche de littérature a été réalisée sur les bases de données PubMed, Embase et CINAHL. La sélection des articles s'est faite sur la base de critères prédéfinis. Les articles ont été analysés à l’aide de la grille McMaster. Résultats : Quatre études comprenant 297 participants au total ont été examinées. Les résultats de la mesure de la force isométrique de la hanche sont variables. Une étude a montré une faiblesse significative des extenseurs de hanche et une autre étude a montré une diminution significative de force des rotateurs latéraux et des abducteurs de hanche chez les personnes atteintes de TP. Deux autres études n’ont pas trouvé de différence significative entre les groupes. Conclusion : Il serait pertinent d'évaluer la force des muscles de la hanche chez les personnes atteintes de TP. Cela pourrait s’avérer utile pour certains patients, en complément aux autres interventions recommandées dans la prise en charge de la TP. Les résultats doivent être interprétés avec prudence en raison du peu d’études à ce sujet.
Effect of Coulomb scattering on graphene conductivity
Creators: name: Vyurkov, V.
name: Ryzhii, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The effect of Coulomb scattering on graphene conductivity in field effect transistor structures is discussed. Inter-particle scattering (electron-electron, hole-hole, and electron-hole) and scattering on charged defects are taken into account in a wide range of gate voltages. It is shown that an intrinsic conductivity of graphene (purely ambipolar system where both electron and hole densities exactly coincide) is defined by strong electron-hole scattering. It has a universal value independent of temperature. We give an explicit derivation based on scaling theory. When there is even a small discrepancy in electron and hole densities caused by applied gate voltage the conductivity is determined by both strong electron-hole scattering and weak external scattering: on defects or phonons. We suggest that a density of charged defects (occupancy of defects) depends on Fermi energy to explain a sub-linear dependence of conductivity on a fairly high gate voltage observed in experiments. We also eliminate contradictions between experimental data obtained in deposited and suspended graphene structures regarding graphene conductivity.
description: 4 pages, 3 figures, to be published in JETP Lett
Ooencyrtus Ashmead
Creators: name: Hayat, Mohammad
name: Mehrnejad, M. Reza
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Encyrtidae
Ooencyrtus

description: Ooencyrtus Ashmead
 Remarks. Ooencyrtus contains 312 world species (Noyes 2015). The two new species described here apparently belong to a group of species characterized by either a completely dark brown to black body, or the gaster basally (TI or from base to level of cercal plates) is yellow, orange yellow or brownish yellow in some species; antenna with the funicle segments clearly longer than broad, slightly more than 1.5× to at least 2× as long as broad; and mandible with one or two small teeth and a broad truncation. At least the following species also belong to this group: Ooencyrtus submetallicus (Howard) (see Noyes 1979), O. fecundus Ferrière & Voegele (1961), O. nigerrimus Ferrière & Voegele (1961), O. acastus Trjapitzin (1967), O. gonoceri Viggiani (1971), O. brunneipes (Noyes 1978), O. solidus Khlopunov (1981), O. exallus Prinsloo (1987), O. egeria Huang & Noyes (1994), O. seronis Hayat, in Hayat et al. (2014), O. telenomicida (Vassiliev 1904) (see Trjapitzin 1989 and Huang & Noyes 1994).
We give a key to those species which are similar to the new species in having the fore wing with an oblique bare area below the parastigma (speculum?) proximal to the linea calva and the linea calva open posteriorly (Fig. 6). In the remaining species listed above, the linea calva of the fore wing is either open or closed posteriorly, but without a bare area below the parastigma proximal to the linea calva.
description: Published as part of Hayat, Mohammad & Mehrnejad, M. Reza, 2016, Ooencyrtus (Hymenoptera: Encyrtidae), egg parasitoids of the pistachio green stink bugs (Hemiptera: Pentatomidae) in Iran, pp. 198-210 in Zootaxa 4117 (2) on page 199, DOI: 10.11646/zootaxa.4117.2.4, http://zenodo.org/record/262044
Comprendre l atmosphere du Soleil et celles des etoiles variables a la fin du 19e siecle or, Understanding the Sun and variable stars atmospheres at the end of the 19th Century
Creators: name: Boistel, Guy
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Guy Boistel questions the Sun / variable stars analogy at the heart of the work of Dutch astronomer Albert Brester. The problem of interdisciplinarity appears in the objectification of the Sun at the end of the 19th century: it is by mixing astronomy, physics and chemistry that Brester tried to apply knowledge of the solar atmosphere to the understanding of variable stars, a fairly confidential field of study still at that time.
description: 28 pages, in French, 6 figures, a chronobibliography of Albert Brester's works
International Journal of Sustainable Energy Planning and Management, Vol. 30 (2021)
Creators: name: International Journal Of Sustainable Energy Planning And Management
Publisher: name: International Journal of Sustainable Energy Planning and Management
Year: 2021

description: Editorial - International Journal of Sustainable Energy Planning and Management Vol 30 Determination of the most appropriate site selection of wind power plants based Geographic Information System and Multi-Criteria Decision-Making approach in Develi, Turkey Planning of multi-hub energy system by considering competition issue Multi-Criteria Decision Making for Photovoltaic Alternatives: A Case Study in Hot Climate Country Optimal electricity supply system under Iranian framework limitations to meet its emission pledge under the Paris climate agreement An Algorithm-based Approach to Map the Players’ Network for Photovoltaic Energy Businesses Application of a cost-benefit model to evaluate the investment viability of the small-scale cogeneration systems in the Portuguese context
Quantum algorithms for quantum dynamics: A performance study on the spin-boson model
Creators: name: Miessen, Alexander
name: Ollitrault, Pauline J.
name: Tavernelli, Ivano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum algorithms for quantum dynamics simulations are traditionally based on implementing a Trotter-approximation of the time-evolution operator. This approach typically relies on deep circuits and is therefore hampered by the substantial limitations of available noisy and near-term quantum hardware. On the other hand, variational quantum algorithms have become an indispensable alternative, enabling small-scale simulations on present-day hardware. However, despite the recent development of variational quantum algorithms for quantum dynamics, a detailed assessment of their efficiency and scalability is yet to be presented. To fill this gap, we applied a variational quantum algorithm based on McLachlan's principle to simulate the dynamics of a spin-boson model subject to varying levels of realistic hardware noise as well as in different physical regimes, and discuss the algorithm's accuracy and scaling behavior as a function of system size. We observe a good performance of the variational approach used in combination with a general, physically motivated wavefunction ansatz, and compare it to the conventional first-order Trotter-evolution. Finally, based on this, we make scaling predictions for the simulation of a classically intractable system. We show that, despite providing a clear reduction of quantum gate cost, the variational method in its current implementation is unlikely to lead to a quantum advantage for the solution of time-dependent problems.
description: 8 pages, 4 figures
Superfluid properties of a Bose-Einstein condensate in an optical lattice confined in a cavity
Creators: name: Bhattacherjee, Aranya B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the effect of a one dimensional optical lattice in a cavity field with quantum properties on the superfluid dynamics of a Bose-Einstein condensate(BEC). In the cavity the influence of atomic backaction and the external driving pump become important and strongly modify the optical potential. Due to the strong coupling between the condensate wavefunction and the cavity modes, the cavity light field develops a band structure. This study reveals that the pump and the cavity emerges as a new handle to control the superfluid properties of the BEC.
description: 12 pages, 10 figures, Accepted for Publication in Optics Communication 2008
Scaling in the distribution of intertrade durations of Chinese stocks
Creators: name: Jiang, Zhi-Qiang
name: Chen, Wei
name: Zhou, Wei-Xing
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: The distribution of intertrade durations, defined as the waiting times between two consecutive transactions, is investigated based upon the limit order book data of 23 liquid Chinese stocks listed on the Shenzhen Stock Exchange in the whole year 2003. A scaling pattern is observed in the distributions of intertrade durations, where the empirical density functions of the normalized intertrade durations of all 23 stocks collapse onto a single curve. The scaling pattern is also observed in the intertrade duration distributions for filled and partially filled trades and in the conditional distributions. The ensemble distributions for all stocks are modeled by the Weibull and the Tsallis $q$-exponential distributions. Maximum likelihood estimation shows that the Weibull distribution outperforms the $q$-exponential for not-too-large intertrade durations which account for more than 98.5% of the data. Alternatively, nonlinear least-squares estimation selects the $q$-exponential as a better model, in which the optimization is conducted on the distance between empirical and theoretical values of the logarithmic probability densities. The distribution of intertrade durations is Weibull followed by a power-law tail with an asymptotic tail exponent close to 3.
description: 16 elsart pages including 3 eps figures
Two Modes of Cluster Dynamics Govern the Viscoelasticity of Colloidal Gels
Creators: name: Cho, Jae Hyung
name: Bischofberger, Irmgard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Colloidal gels formed by strongly attractive particles at low particle volume fractions are composed of space-spanning networks of uniformly sized clusters. We study the thermal fluctuations of the clusters using differential dynamic microscopy by decomposing them into two modes of dynamics, and link them to the macroscopic viscoelasticity via rheometry. The first mode, dominant at early times, represents the localized, elastic fluctuations of individual clusters. The second mode, pronounced at late times, reflects the collective, viscoelastic dynamics facilitated by the connectivity of the clusters. By mixing two types of particles of distinct attraction strengths in different proportions, we control the transition time at which the collective mode starts to dominate, and hence tune the frequency dependence of the linear viscoelastic moduli of the binary gels.
« "S'il y a beaucoup de jeux dans la ville : trouble pour cette ville" : fortunes et infortunes du jeu dans les textes de l'ancienne Mésopotamie », in D. Bouvier and V. Dasen (eds), Héraclite : Le temps est un enfant qui joue, Collection Jeu/ Play/Spiel 1, Liège, Presses Universitaires de Liège, 2020, p. 225-238.
Creators: name: Rendu Loisel, Anne-Caroline
Publisher: name: Zenodo
Year: 2021

description: In the cuneiform tablets of ancient Mesopotamia, game does not seem to
 arouse the same interpretation. In literary texts, it evokes the happiness essential to every mortal individual, while in divination, it represents a baleful sign against which one should be guarded. This article proposes to analyze the dangerous character of game through its execution modalities in literary texts. The game is not peculiar to the human being and can lead to dramatic consequences on the cosmological plane, whether with Marduk, god of Babylon when he was a child, the goddess Ištar who willingly mixes game with battle, or Gilgameš who does not respect his game opponents.
Exact Jastrow-Slater wave function for the one-dimensional Luttinger model
Creators: name: Tayo, Benjamin
name: Sorella, Sandro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that it is possible to describe the ground state of the Luttinger model in terms of a Jastrow-Slater wave function. Moreover, our findings reveal that one-particle excitations and their corresponding dynamics can be faithfully represented only when a Jastrow factor of a similar form is applied to a coherent superposition of many Slater determinants. We discuss the possible relevance of this approach for the theoretical description of photoemission spectra in higher dimensionality, where the present wave function can be straightforwardly generalized and can be used as a variational ansatz, that is exact for the 1D Luttinger model.
description: 10 pages, one figure, to appear in Phys. Rev. B
Modification of the fluctuation dynamics of ultra-thin wetting films
Creators: name: Clavaud, C.
name: Maza-Cuello, M.
name: Frétigny, C.
name: Talini, L.
name: Bickel, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report on the effect of intermolecular forces on the fluctuations of supported liquid films. Using an optically-induced thermal gradient, we form nanometer-thin films of wetting liquids on glass substrates, where van der Waals forces are balanced by thermocapillary forces. We show that the fluctuation dynamics of the film interface is strongly modified by intermolecular forces at lower frequencies. Data spanning three frequency decades are in excellent agreement with theoretical predictions accounting for van der Waals forces. Our results emphasize the relevance of intermolecular forces on thermal fluctuations when fluids are confined at the nanoscale.
description: Accepted for publication in Phys. Rev. Lett
Piecewise linear regularized solution paths
Creators: name: Rosset, Saharon
name: Zhu, Ji
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62J07 (Primary); 62F35, 62G08, 62H30 (Secondary)

description: We consider the generic regularized optimization problem $\hat{\mathsfβ}(λ)=\arg \min_βL({\sf{y}},X{\sfβ})+λJ({\sfβ})$. Efron, Hastie, Johnstone and Tibshirani [Ann. Statist. 32 (2004) 407--499] have shown that for the LASSO--that is, if $L$ is squared error loss and $J(β)=\|β\|_1$ is the $\ell_1$ norm of $β$--the optimal coefficient path is piecewise linear, that is, $\partial \hatβ(λ)/\partial λ$ is piecewise constant. We derive a general characterization of the properties of (loss $L$, penalty $J$) pairs which give piecewise linear coefficient paths. Such pairs allow for efficient generation of the full regularized coefficient paths. We investigate the nature of efficient path following algorithms which arise. We use our results to suggest robust versions of the LASSO for regression and classification, and to develop new, efficient algorithms for existing problems in the literature, including Mammen and van de Geer's locally adaptive regression splines.
description: Published at http://dx.doi.org/10.1214/009053606000001370 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
MOESM1 of The effects of add-on self-care education on quality of life and fatigue in gastrointestinal cancer patients undergoing chemotherapy
Creators: name: Xie, Jun
name: Zhu, Tingli
name: Lu, Qun
name: Xu, Xiaomin
name: Cai, Yinghua
name: Xu, Zhenghong
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 1: The self-care program.
Multiple quantum NMR studies of solutes in liquid crystals
Creators: name: Rendell, John Charles Thomas
Publisher: name: University of British Columbia
Year: 2010

description: The spectrum of 1,3-dichloro-2-ethenylbenzene partially oriented in nematic liquid crystalline solvents has been analysed using a number of complimentary nuclear magnetic resonance (NMR) techniques. The analysis of this spectrum poses a considerable problem due to its complexity and the uncertain geometry and orientation of the molecule. The technique of multiple quantum NMR (MQNMR) has the capability of tremendously simplifying complex spectra. The multiple quantum spectrum was measured and proved very useful in the analysis but unavoidable resolution difficulties in the MQNMR experiment prevented a complete solution of the problem using this spectrum alone. While the spectrum of 1,3-dichloro-2-ethenylbenzene is dominated by only a few large interactions, the lines are split by relatively small dipolar couplings and the limited resolution available in the multiple quantum spectrum makes the determination of the smaller couplings difficult. To overcome this difficulty a frequency selective excitation of the multiple quantum spectrum was adapted and developed. After testing the experiment on the relatively simple spectrum of 1,1,2-trichloroethane dissolved in a nematic solvent, this selective experiment was applied to the much more complex spectrum of 1,3-dichloro-2-ethenylbenzene where it proved capable of directly measuring the small couplings in the spectrum without interference from any of the larger interactions. This information contributed greatly to the eventual analysis of the spectrum. MQNMR experiments can be very time consuming and as a result the spectroscopist must frequently make do with very limited time domain signals from which the spectrum must be extracted. This creates a number of difficulties when the signals are analysed with the fast Fourier transform (FFT), the standard method of spectral analysis used in NMR. With these problems in mind, the suitability of MQNMR time domain signals for analysis by a method of spectral estimation due to Burg, commonly called the maximum entropy method (MEM), was examined. By testing Burg's MEM with the MQNMR spectra of a number of different solutes partially oriented in nematic phases, it was found to be a useful adjunct to the FFT when dealing with MQNMR interferograms. While some care is required in its application, this method of spectral analysis should find important uses in the estimation of MQNMR spectra. Solution of the spectrum yielded information on the molecular geometry and the orientation of the 1,3-dichloro-2-ethenylbenzene in the nematic solvents used. While an extensive analysis of molecular geometry proved impossible, the information on molecular orientation was examined in terms of two different models. The orientation data shows excellent agreement with a recently developed model for orientation based upon the shape of the solute.
Electroweak Symmetry Breaking and BSM Physics (A Review)
Creators: name: Bhattacharyya, Gautam
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk, I shall first discuss the standard model Higgs mechanism and then highlight some of its deficiencies making a case for the need to go beyond the standard model (BSM). The BSM tour will be guided by symmetry arguments. I shall pick up four specific BSM scenarios, namely, supersymmetry, Little Higgs, Gauge-Higgs unification, and the Higgsless approach. The discussion will be confined mainly on their electroweak symmetry breaking aspects.
description: 17 pages, 10 eps figs, Based on plenary talks at the International Conferences: WIN07, Kolkata, Jan'07, and WHEPP-10, Chennai, Jan'08. To appear in the WHEPP-10 proceedings (a special issue of PRAMANA)
Curves of given $p$-rank with trivial automorphism group
Creators: name: Achter, Jeff
name: Glass, Darren
name: Pries, Rachel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $k$ be an algebraically closed field of characteristic $p >0$. Suppose $g \geq 3$ and $0 \leq f \leq g$. We prove there is a smooth projective $k$-curve of genus $g$ and $p$-rank $f$ with no non-trivial automorphisms. In addition, we prove there is a smooth projective hyperelliptic $k$-curve of genus $g$ and $p$-rank $f$ whose only non-trivial automorphism is the hyperelliptic involution. The proof involves computations about the dimension of the moduli space of (hyperelliptic) $k$-curves of genus $g$ and $p$-rank $f$ with extra automorphisms.
description: 10 pages
Magnetic dipolar modes in magnon-polariton condensates
Creators: name: Kamenetskii, E. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: For dipole-carrying excitations observed in a high-quality resonator, strong-coupling modes can appear as composite bosons with the spontaneous formation of quantized vortices in the condensed phase of a polariton fluid. In exciton-polaritons, in particular, it leads to sustained trapping of the emitted photon. In this paper, we show that magnon-polaritons can be realized due to magnon condensation caused by magnetic dipole-dipole interaction. In a quasi-2D ferrite disk placed in a microwave cavity, one observes quantum confinement effects of magnetic-dipolar-mode (MDM) oscillations. These modes, characterized by energy eigenstates with rotational superflows and quantized vortices, are exhibited as spinor condensates. Along with the condensation of MDM magnons in the quasi-2D disk of the magnetic insulator, electric dipole condensation is also observed. At the MDM resonances, transfer between angular momenta in the magnetic insulator and in the vacuum cavity, demonstrates generation of vortex flows with fixed handedness. This indicates unique topological properties of polariton wavefronts. One observes curved wavefronts and effects of supperradiance in microwave structures. In an environment of scattering states of microwave waveguide, EM waves can carry the topological phases of MDM resonances.
description: 39 pages, 22 figures
COMPARISON OF HIGH STRAIN RATE PROPERTIES OF ADDITIVELY MANUFACTURED AND WROUGHT INCONEL 625 VIA KOLSKY BAR TESTING
Creators: name: Morin, Jason
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Mechanics
subject: Materials Science
subject: Additive manufacturing
subject: High strain rate
subject: Inconel
subject: Kolsky bar
subject: Split Hopkinson bar

description: Additive manufacturing is becoming an important part of modern manufacturing technology. Before additively manufactured parts gain widespread adoption, the material properties of the additively manufactured material itself must be accurately quantified. Stress strain curves must be produced over a wide variety of test conditions so that accurate modeling of material behavior can be done. Materials that may undergo dynamic loading must therefore be tested under dynamic conditions. In this study the tensile and high strain rate compressive material properties of additively manufactured Inconel 625 are compared to conventionally formed wrought material. The results of testing showed that there is a clear difference in material properties between wrought and additively manufactured Inconel 625 in tension and compression. The additively manufactured tensile samples showed anisotropy between print directions of approximately ±10%. The printed samples had a 35% higher yield strength, a similar ultimate strength, and 20-40% the elongation when compared to wrought. There was also a significant difference in properties between the additive and wrought materials during the compressive tests. The additive material showed little anisotropy and had a 30% higher yield stress than wrought. Additionally, the additive material had a higher strain hardening rate than the wrought samples. No significant strain rate effects were noted.
« Aiôn en jeu ou la valeur symbolique du temps », in D. Bouvier and V. Dasen (eds), Héraclite : Le temps est un enfant qui joue, Collection Jeu/ Play/Spiel 1, Liège, Presses Universitaires de Liège, 2020, p. 239-255.
Creators: name: Spadini, Fabio
Publisher: name: Zenodo
Year: 2020

description: The child Aiôn of Heraclitus invites us to examine the metaphorical
 relationship between play and destiny as it manifests itself in ancient astrological sources. In Late Antiquity, the image of a game board was used to explain complex astronomical theories as well as to represent metaphorically the life on earth. During the Greco-Roman era, games also inspired the methaporical representation of the notion of destiny on various miniaturized media, notably coinage and glyptics. The zodiacal ring takes the form of a hoop, in which stands a cosmocrator deity, master of the world. The engraving of this motif on gemstones which serve as a personal ornament, in contact with the body in the form of a ring or a pendant, seems to indicate the desire to appropriate this symbol of the cosmic cyclical rhythm. The travel of the Sun on his chariot through the ecliptic determines the time of seasons,
 inseparable from the time of life. This idea comes with variants on the so-called magical gems that this article analyses.
Expanding Constrained Kinodynamic Path Planning Solutions through Recurrent Neural Networks
Creators: name: Shaffer, Joshua Allen
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: subject: Engineering
subject: Robotics
subject: Aerospace engineering
subject: Machine learning
subject: Motion/trajectory planning
subject: Neural networks
subject: Optimization
subject: Path planning
subject: Reinforcement learning

description: Path planning for autonomous systems with the inclusion of environment and kinematic/dynamic constraints encompasses a broad range of methodologies, often providing trade-offs between computation speed and variety/types of constraints satisfied. Therefore, an approach that can incorporate full kinematics/dynamics and environment constraints alongside greater computation speeds is of great interest. This thesis explores a methodology for using a slower-speed, robust kinematic/dynamic path planner for generating state path solutions, from which a recurrent neural network is trained upon. This path planning recurrent neural network is then used to generate state paths that a path-tracking controller can follow, trending the desired optimal solution. Improvements are made to the use of a kinodynamic rapidly-exploring random tree and a whole-path reinforcement training scheme for use in the methodology. Applications to 3 scenarios, including obstacle avoidance with 2D dynamics, 10-agent synchronized rendezvous with 2D dynamics, and a fully actuated double pendulum, illustrate the desired performance of the methodology while also pointing out the need for stronger training and amounts of training data. Last, a bounded set propagation algorithm is improved to provide the initial steps for formally verifying state paths produced by the path planning recurrent neural network.
Η συνταγματική και υπερνομοθετική κατοχύρωση της ελευθέριας του συνέρχεσθαι: η ελευθερία των συναθροίσεων στην υπηρεσία της δημοκρατίας
Creators: name: Βουκελάτος, Δημήτριος Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Θεμελιώδη δικαιώματα
Ελευθερία συνάθροισης
Λειτουργικότητα δικαιωμάτων
Fundamental rights
Freedom of assembly
Functionality of constitutional rights

description: Η παρούσα μελέτη εξετάζει το ζήτημα της ελευθερίας των συναθροίσεων. Επίκεντρο της μελέτης αποτελεί ο ρόλος και η λειτουργικότητα του θεμελιώδους αυτού δικαιώματος, στο πλαίσιο μιας δημοκρατικής κοινωνίας. Ειδικότερα, θα δοθεί βάση στο γεγονός πως μέσα από την ελευθερία της συνάθροισης πραγματώνονται και οι ζωτικές για τη δημοκρατία συλλογικές διαδικασίες της αμφισβήτησης και της διαμαρτυρίας. Περαιτέρω, θα αναλυθεί η νομική φύση του δικαιώματος της συνάθροισης και η σύνδεσή του με άλλα θεμελιώδη δικαιώματα και ελευθερίες. Η εξέλιξη της ελευθερίας των συναθροίσεων στην παρούσα μελέτη, εξετάζεται τόσο από ιστορικής πλευράς όσο και μέσα από την πλούσια νομολογία του ΕΔΔΑ. Επιπροσθέτως, λαμβάνει χώρα διεξοδική ανάλυση των περιορισμών στους οποίους υπόκειται το δικαίωμα του συνέρχεσθαι. Τέλος, ιδιαίτερη μνεία γίνεται στο νέο νομοθετικό πλαίσιο (ν. 4703/202) περί δημόσιων υπαίθριων συναθροίσεων, προχωρώντας σε συστηματική ερμηνεία των επιμέρους διατάξεών του
description: The present study examines the subject of freedom of assembly. The focus of the study is the role and functionality of this fundamental right in the context of a democratic society. In particular, attention will be given to the fact that it is through freedom of assembly that the collective processes of contestation and protest, vital to democracy, are realized. Furthermore, the legal nature of the right of assembly and its connection with other fundamental rights and freedoms will be analyzed. The evolution of freedom of assembly in this study is examined both from a historical perspective and through the extensive case law of the ECHR. In addition, a thorough analysis of the limitations to which the right of assembly is subjected takes place. Finally, particular reference is made to the new legislative framework (Law 4703/202) on public open-air assemblies, with a systematic interpretation of its individual provisions
The inevitable nonlinearity of quantum gravity falsifies the many-worlds interpretation of quantum mechanics
Creators: name: Singh, T. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There are fundamental reasons as to why there should exist a reformulation of quantum mechanics which does not refer to a classical spacetime manifold. It follows as a consequence that quantum mechanics as we know it is a limiting case of a more general nonlinear quantum theory, with the nonlinearity becoming significant at the Planck mass/energy scale. This nonlinearity is responsible for a dynamically induced collapse of the wave-function, during a quantum measurement, and it hence falsifies the many-worlds interpretation of quantum mechanics. We illustrate this conclusion using a mathematical model based on a generalized Doebner-Goldin equation. The non-Hermitian part of the Hamiltonian in this norm-preserving, nonlinear, Schrodinger equation dominates during a quantum measurement, and leads to a breakdown of linear superposition.
description: 6 pages. Honorable Mention in Gravity Research Foundation Essay Competition 2007. This is also a summary of a talk given at the Meeting `Himalayan Relativity Dialogue', Mirik, India, 18-20 April, 2007. Detailed version of this essay is in preparation
Minimal Standard Model self-energies at finite temperature in the presence of weak magnetic fields: towards a full symmetry restoration study
Creators: name: Tejeda-Yeomans, Maria E.
name: Navarro, Jorge
name: Sanchez, Angel
name: Piccinelli, Gabriella
name: Ayala, Alejandro
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The study of the universe's primordial plasma at high temperature plays an important role when tackling different questions in cosmology, such as the origin of the matter-antimatter asymmetry. In the Minimal Standard Model (MSM) neither the amount of CP violation nor the strength of the phase transition are enough to produce and preserve baryon number during the Electroweak Phase Transition (EWPT), which are two of the three ingredients needed to develop baryon asymmetry. In this talk we present the first part of the analysis done within a scenario where it is viable to have improvements to the aforementioned situation: we work with the degrees of freedom in the broken symmetry phase of the MSM and analyze the development of the EWPT in the presence of a weak magnetic field. More specifically, we calculate the particle self-energies that include the effects of the weak magnetic field, needed for the MSM effective potential up to ring diagrams.
description: Apr. 2008. 7pp. To appear in the proceedings of 11th Mexican Workshop on Particles and Fields 2007, Tuxtla Gutierrez, Mexico, 7-12 Nov. 2007