cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hibernation Revived by Weak Magnetic Braking
Creators: name: Martin, Rebecca G.
name: Tout, Christopher A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cataclysmic variables undergo periodic nova explosions during which a finite mass of material is expelled on a short timescale. The system widens and, as a result, the mass-transfer rate drops. This state of hibernation may account for the variety of cataclysmic variable types observed in systems of similar mass and period. In the light of recent changes to the theory of nova ignition and magnetic braking we investigate whether hibernation remains a viable mechanism for creating cataclysmic variable diversity. We model the ratio of time spent as dwarf novae (DNe) to nova-like systems (NLs). Above a critical mass-transfer rate the system is NL and below it a DN. The dominant loss of angular momentum is by magnetic braking but the rate is uncertain. It is also uncertain what fraction of the mass accreted is expelled during the novae. We compare the models of the ratios against the period of the system for different magnetic braking rates and different ejected masses with the ratio of the number of observed NLs to DNe. We deduce that a rate of angular momentum loss a factor of ten smaller than that traditionally assumed is necessary if hibernation is to account for the observed ratios.
Extra gauge bosons and lepton flavor universality violation in $Υ$ and $B$ meson decays
Creators: name: García-Duque, Cristian H.
name: Muñoz, J. H.
name: Quintero, Néstor
name: Rojas, Eduardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Lepton flavor universality can be tested through the ratio of semileptonic $B$ meson decays and leptonic $Υ$ meson decays, with $Υ\equiv Υ(nS)$ ($n=1,2,3$). For the charged-current transitions $b \to cτ\barν_τ$, discrepancies between the experiment and the Standard Model (SM) have been observed in recent years by different flavor facilities such as BABAR, Belle, and LHCb. While for the neutral-current transitions $b \bar{b} \to τ\barτ$, the BABAR experiment reported recently a new measurement of leptonic decay ratio $R_{Υ(3S)} = {\rm BR}(Υ(3S) \to τ^+τ^-)/{\rm BR}(Υ(3S) \to μ^+μ^-)$, showing an agreement with the SM at the $1.8 σ$ level. In light of this new BABAR result and regarding the connection between new physics (NP) interpretations to the charged-current $b \to c τ\barν_τ$ anomalies and neutral-current $b \bar{b} \to τ\barτ$ processes, in this study, we revisit the NP consequences of this measurement within a simplified model with extra massive gauge bosons that coupled predominantly to left-handed leptons of the third-generation. We show that the BABAR measurement of $R_{Υ(3S)}$ cannot easily be accommodated (within its experimental $1σ$ range) together with the other $b \to cτ\barν_τ$ data, hinting toward a new anomalous observable.
description: 8 pages, 3 figures. v2: Discussion improved, references added. v3: Matches with version published in Phys. Rev. D
Very high contrast IFU spectroscopy of AB Doradus C: 9 mag contrast at 0.2" without a coronagraph using spectral deconvolution
Creators: name: Thatte, Niranjan
name: Abuter, Roberto
name: Tecza, Matthias
name: Nielsen, Eric L.
name: Clarke, Fraser J.
name: Close, Laird M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an extension of the spectral deconvolution method (Sparks & Ford 2002) to achieve very high contrast at small inner working radii. We apply the method to the specific case of ground based adaptive optics fed integral field spectroscopy (without a coronagraph). Utilising the wavelength dependence of the Airy and speckle patterns, we make an accurate estimate of the PSF that can be scaled and subtracted from the data cube. The residual noise in the resulting spectra is very close to the photon noise from the starlight halo. We utilise the technique to extract a very high SNR H & K band spectrum of AB Dor C, the low mass companion to AB Dor A. By effectively eliminating all contamination from AB Dor A, the extracted spectrum retains both continuum and spectral features. The achieved 1 sigma contrast is 9 mag at 0.2", 11 mag at 0.5", in 20 mins exposure time, at an effective spectral bandwidth of 5.5 nm, proving that the method is applicable even in low Strehl regimes. The spectral deconvolution method clearly demonstrates the efficacy of image slicer based IFUs in achieving very high contrast imaging spectroscopy at small angular separations, validating their use as high contrast spectrographs/imagers for extreme adaptive optics systems.
description: 9 pages, 5 figures, accepted for publication in MNRAS. This is a joint submission with astro-ph/0703564 by L. Close et al
title: Why is materiality useful for legal historians?: More than just a vessel for legal content
Creators: name: Wielandt, Alexandra
Publisher: name: Fachinformationsdienst für internationale und interdisziplinäre Rechtsforschung
Year: 2024
Subjects: subject: 340

description: Do you prefer reading from a screen or a printed book? What is the difference anyway? This post considers how the material characteristics of things like books and their format contribute to our understanding of the history of law.
description: Legal History Insights
Measurement of the neutron charge radius and the role of its constituents
Creators: name: Atac, H.
name: Constantinou, M.
name: Meziani, Z. -E.
name: Paolone, M.
name: Sparveris, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The neutron is a cornerstone in our depiction of the visible universe. Despite the neutron zero-net electric charge, the asymmetric distribution of the positively- (up) and negatively-charged (down) quarks, a result of the complex quark-gluon dynamics, lead to a negative value for its squared charge radius, $\langle r_{\rm n}^2 \rangle$. The precise measurement of the neutron's charge radius thus emerges as an essential part of unraveling its structure. Here we report on a $\langle r_{\rm n}^2 \rangle$ measurement, based on the extraction of the neutron electric form factor, $G_{\rm E}^{\rm n}$, at low four-momentum transfer squared $(Q^2)$ by exploiting the long known connection between the $N \rightarrow Δ$ quadrupole transitions and the neutron electric form factor. Our result, $\langle r_{\rm n}^2 \rangle = -0.110 \pm0.008~({\rm fm}^2)$, addresses long standing unresolved discrepancies in the $\langle r_{\rm n}^2 \rangle$ determination. The dynamics of the strong nuclear force can be viewed through the precise picture of the neutron's constituent distributions that result into the non-zero $\langle r_{\rm n}^2 \rangle$ value.
description: https://doi.org/10.1038/s41467-021-22028-z
Quantum entanglement of two flux qubits induced by an auxiliary SQUID
Creators: name: Shi, T.
name: Song, Z.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We revisit a theoretical scheme to create quantum entanglement of two three-levels superconducting quantum interference devices (SQUIDs) with the help of an auxiliary SQUID. In this scenario, two three-levels systems are coupled to a quantized cavity field and a classical external field and thus form dark states. The quantum entanglement can be produced by a quantum measurement on the auxiliary SQUID. Our investigation emphasizes the quantum effect of the auxiliary SQUID. For the experimental feasibility and accessibility of the scheme, we calculate the time evolution of the whole system including the auxiliary SQUID. To ensure the efficiency of generating quantum entanglement, relations between the measurement time and dominate parameters of the system are analyzed according to detailed calculations.
description: 8 pages, 4 figures
GINS: a new tool for VLBI Geodesy and Astrometry
Creators: name: Bourda, G.
name: Charlot, P.
name: Biancale, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the framework of the "Groupe de Recherches de Géodésie Spatiale" (GRGS), a rigorous combination of the data from five space geodetic techniques (VLBI, GPS, SLR, LLR and DORIS) is routinely applied to simultaneously determine a Terrestrial Reference Frame (TRF) and Earth Orientation Parameters (EOP). This analysis is conducted with the software package GINS which has the capability to process data from all five techniques together. Such a combination at the observation level should ultimately facilitate fine geophysical studies of the global Earth system. In this project, Bordeaux Observatory is in charge of the VLBI data analysis, while satellite geodetic data are processed by other groups. In this paper, we present (i) details about the VLBI analysis undertaken with GINS, and (ii) the results obtained for the EOP during the period 2005-2006. We also compare this EOP solution with the IVS (International VLBI Service for geodesy and astrometry) analysis coordinator combined results. The agreement is at the 0.2 mas level, comparable to that of the other IVS analysis centers, which demonstrates the capability of the GINS software for VLBI analysis.
MOESM1 of Analysis and expression of the carotenoid biosynthesis genes from Deinococcus wulumuqiensis R12 in engineered Escherichia coli
Creators: name: Xu, Xian
name: Tian, Liqing
name: Xu, Jiali
name: Xie, Chengjia
name: Jiang, Ling
name: Huang, He
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Figure S1. Gene function annotations of R12 genome in GO, COG and KEGG databases. Figure S2. The antiSMASH analysis results of R12 genome. Figure S3. The orientation and distribution of the carotenoid biosynthetic genes from the R1 and R12. Table S1. Bioinformatic analysis of key enzymes of carotenoid biosynthesis in R12. Table S2. Percentages of sequence identity of proteins in carotenoid biosynthesis between D. wulumuqiensis R12 and other Deinococcus spp.
"It's not about luck": the production of Australian elite athletes
Creators: name: Grace, Anna Jessica
Publisher: name: The Australian National University
Year: 2016
Subjects: Australian elite athletes
training
physical training
embodiment training
emotional training
temporal training
moral training
crescendo of training
flow
Foucault
phenomenology
elite athlete subjectivity
elite athlete habitus
discipline
elite athlete work ethic
elite athletes as distinct subjects
it's not about luck
deliberate practice
Australian Institute of Sport (AIS)
elite athlete attitude
getting the feel
correct training
emotion work
sporting bodies
sporting embodiment
sporting embodiment literature
sporting bodies literature
anthropology of sport

description: This thesis examines the mechanisms of athletes’ training to explore the production of Australian elite athletes within a premier national sports training institution in Canberra, Australia. Drawing on the twenty months of ethnographic fieldwork I undertook while living on campus at the institution, this thesis analyses the everyday practices and the numerous training processes of athletes as well as the contributions of coaches and sports science and sports medicine experts involved in crafting athletes into distinctive, elite subjects. Situated in the sporting embodiment literature within the broader field of the anthropology and sociology of sport, this project advances the empirical research on elite athletes, on elite sports institutions and on the complex mechanisms of training elite athletes. I explore the linking mental, moral, emotional, temporal, physiological and subjectified mechanisms of training that inform athletes’ daily lives and lived embodiment. Much of the existing research has examined one single sport, and relatively homogenous demographics of sporting participants. In contrast this thesis looks at male and female athletes in senior and junior levels of elite sport across a range of sports. In doing this, it sheds light on the shared experiences of the multiple mechanisms of elite training to create elite athletes. Through the theoretical lens of Michel Foucault and a phenomenological understanding of habitus I explore how the disciplinary techniques of training produced by multiple agents influence elite athletes’ embodiment and experiences of the cultural norms of elite sport. Through the investigation of the mental, moral, emotional, temporal, physiological and subjectified mechanisms of training, I observe how the production of elite athletes is particularly marked by temporally informed micro-regimes, Hochschild’s (1979 and 1983) ‘emotion work’ and Mauss’s (1973) ‘techniques of the body’. In examining the influence of an elite athlete work ethic discourse and the moral code of elite sport on athletes through interlinking mechanisms of training, I argue that the production of Australian elite athletes is not about luck. Instead, an elite athlete’s habitus is reconstituted through interlinking mechanisms of training that are produced by multiple agents, including coaches, sports science and sports medicine experts and athletes alike, which craft elite athletes as distinct subjects.
Stress analysis of metal cutting tools
Creators: name: Jemal, Girma
Publisher: name: University of British Columbia
Year: 2008

description: Metal cutting tools experience cutting forces distributed over a small chip-tool contact area. When the magnitude of the stresses induced by the cutting forces exceeds the tool material fatigue strength, failure of the cutting tool results. In this thesis, stress analysis in cutting tools is presented in order to predict the location and modes of tool failures. The stress analysis of cutting tools is presented using both analytical and numerical (Finite Element) based methods. First, various cutting force distributions on the rake face of the tool and analytical cutting tool stress solutions available in the literature are surveyed. It is then shown that the previous analytical solutions are in-correct because they directly applied the infinite wedge solution to determine stresses in the loaded region of the cutting tool. In this thesis, the tool and the boundary stresses are considered both in the loaded and free region. For a polynomial boundary stresses on the rake face and zero boundary stresses on the flank face, the stresses in a two-dimensional cutting tool are determined using the infinite wedge solution. The analytical cutting tool stress distributions obtained agrees well with finite element solutions and published photoelastic experimental stress distributions. From the stress distribution obtained, it is shown that the critical maximum tensile stress occurs at the end of chip-tool contact and it results in initiation of cracks and final fracture of the whole loaded region. The critical maximum compressive stress occurs on the flank face close to the cutting edge which results on cutting edge permanent deformation. The critical maximum shear stress occurs at the cutting edge and it results in cutting edge chipping. The possible extension of the two-dimensional solution to determine stresses in end mill flutes is considered. A comparison of a finite element solution of an end mill flute and the two-dimensional solution obtained above (for the same wedge angle and boundary load distribution) shows agreement at the cutting edge while at the end of chip-tool contact the two-dimensional solution gives an upper bound estimate. Thus the conclusions reached for tool failure in the loaded region from the two-dimensional solution is also applicable in end mill flutes. At the end mill shank, stress predictions using a cantilevered beam solution agrees with a finite element solution. The stress distribution shows shank fracture either at the fixed end of the end mill where it is attached to the chuck or at the flute section closest to the circular portion of the endmill. In this study for both orthogonal cutting tools and end mills, good correlation is obtained between predicted and observed in-service cutting tool failures. Therefore, the proposed cutting tool stress analysis approach may be recommended for cutting tool design and selection of optimum machining conditions.
Tachyon Matter in Loop Quantum Cosmology
Creators: name: Sen, A. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An analytical approach for studying the cosmological scenario with a homogeneous tachyon field within the framework of loop quantum gravity is developed. Our study is based on the semi-classical regime where space time can be approximated as a continuous manifold, but matter Hamiltonian gets non-perturbative quantum corrections. A formal correspondence between classical and loop quantum cosmology is also established. The Hamilton-Jacobi method for getting exact solutions is constructed and some exact power-law as well as bouncing solutions are presented.
description: 5 pages, Revtex style. Title changed. Some general comments and references added. No major changes. Accepted for publication in Phys. Rev.D
Sociolinguistic and syntactic elicitation (various)
Creators: name: CWR
name: Baclawski, Kenneth
name: Sikhara (Đàng Thanh Quốc Thuận)
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: cjm

description: Passives, subjecthood, subject-oriented adverbs, definiteness
Quantum Effects in Softly Broken Gauge Theories in Curved Space-Times
Creators: name: Buchbinder, I. L.
name: de Berredo-Peixoto, G.
name: Shapiro, I. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The soft breaking of gauge or other symmetries is the typical Quantum Field Theory phenomenon. In many cases one can apply the St$\ddot{\rm u}$ckelberg procedure, which means introducing some additional field or fields and restore the gauge symmetry. The original softly broken theory corresponds to a particular choice of the gauge fixing condition. In this paper we use this scheme for performing quantum calculations for some softly broken gauge theories in an arbitrary curved space-time. The following examples are treated in details: Proca field, massive QED and massive torsion coupled to fermion. Furthermore we present a qualitative discussions of the discontinuity of quantum effects in the massive spin-2 field theory, paying special attention to the similarity and differences with the massless limit in the spin-1 case.
description: LaTeX, 13 pages, no figures
Syntactic elicitation (various)
Creators: name: GZG
name: Baclawski, Kenneth
name: Sikhara (Đàng Thanh Quốc Thuận)
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: cjm

description: Sluicing, question-answer pairs, embedding, topicalization, tense/aspect/modality
Στρωματογραφική παλαιοντολογική και παλαιογεωγραφική μελέτη των νεογενών-τεταρτογενών αποθέσεων της λεκάνης Κατερίνης
Creators: name: Συλβέστρου, Ιωάννα Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2002
Subjects: Λεκάνη Κατερίνης
Λιθοστρωματογραφία
Λιθοφάσεις
Παλαιογεωγραφία
Katerini basin
Lithostratigraphy
Biostratigraphy
Lithofacies
Paleogeography

description: Αντικείμενο της διατριβής είναι η λιθοστρωματογραφική παλαιοντολογική & βιοστρωματογραφική μελέτη των ιζημάτων της λεκάνης Κατερίνης, ο καθορισμός των περιβάλλοντων απόθεσης και η αναπαράσταση της παλαιογεωγραφικής της εξέλιξης σε συνδυασμό με το ανατολικό περιθώριο του βυθίσματος Αξιού-Θερμαϊκού. Καθορίστηκαν 8 σχηματισμοί που χαρτογραφήθηκαν σε 1:50.000. Η ηλικία κάθε σχηματισμού προσδιορίστηκε με βάση παλαιοντολογικά δεδομένα. Τα περιβάλλοντα απόθεσης και η παλαιογεωγραφική εξέλιξη της λεκάνης διακρίθηκε σε έξι χρονολογικές φάσεις : 1η φάση. Αρχές Κάτω Μειοκάνου, δημιουργία λεκάνης Αξιού-Θερμαϊκού. Σχηματισμός στα ΝΔ της λεκάνης Κατερίνης αλλουβιακών ριπιδίων, ανάπτυξη λίμνης με δημιουργία λιγνιτών. 2η φάση, Μέσο Μειόκαινο, δράση ποταμών ελικοειδούς ανάπτυξης. 3η φάση, αρχές Ανω Μειόκαινου, δράση πλεξοειδών ποταμών, απόθεση αδρόκοκκων υλικών. 4η φάση, Ανω Μειόκαινο-"Πόντιο", επικοινωνία με ευξεινική-λεκάνη-παρουσία υφάλμυρης πανίδας. 5η φάση, Ανωμειόκαινο-Πλειόκαινο, λειτουργία ποταμολιμναίων συστημάτων, παροχή ηφαιστειακών υλικών από αλμωπία. 6η φάση, Ανω πλειόκαινο-Κάτω πλειτόκαινο, ανύψωση Ολύμπου, σχηματισμός αλλουβιακών ριπιδίων στο νότιο τμήμα της λεκάνης
description: This work deals with the lithostratigraphic, paleontological & biostratigraphic study of the Neogene. Quaternary deposits of Katerini basin. The determination of depositional environments and the paleogeographic reconstruction are also basic aims. Eight(8) formations are distinquished and have been mapped in a scale 1:50.000 age of each formation is based on paleontological data. Depositional environments and paleogeographic evolution of the basin could be distinquished in 6 chronological stages : Stage 1 : in Laver Miocene tectonic events deposited in the SW part of Katerini basin. Stage 2 : during the middle Micene meandering rivers systems deposited sand and clay. Stay 3 : brained systems activated in the Upper Miocene. Stage 4 : occurence of Paratethys Upper Miocene-Pliocene fluvial and lacustrine systems activated in combination. Stage 6 : during Lower Pleistocene in the South part of the basin un uplift of Olympus was completed with the formation of alluvial fans
The Wigner-Yanase entropy is not subadditive
Creators: name: Hansen, Frank
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Wigner and Yanase introduced in 1963 the Wigner-Yanase entropy defined as minus the skew information of a state with respect to a conserved observable. They proved that the Wigner-Yanase entropy is a concave function in the state and conjectured that it is subadditive with respect to the aggregation of possibly interacting subsystems. While this turned out to be true for the quantum-mechanical entropy, we negate the conjecture for the Wigner-Yanase entropy by providing a counter example.
description: To appear in Journal of Statistical Physics
Theopomps Meropis und Platon: Nachahmung und Parodie
Creators: name: Nesselrath, Heinz-Günther
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 1 (1998): Göttinger Forum für Altertumswissenschaft
STALKER: ANÁLISE JURÍDICA DO PERSEGUIDOR À LUZ DO CÓDIGO PENAL BRASILEIRO
Creators: name: Knobloch Junior, Ricardo Luiz
name: De Almeida, Roberto Fuck
Publisher: name: Zenodo
Year: 2024

description: A presente pesquisa pretende abordar o tema: Stalker: Análise Jurídica do Perseguidor à Luz do Código Penal Brasileiro. O objetivo geral deste trabalho é de entender como se categoriza e se tipifica o crime de perseguição perante o código penal brasileiro, os específicos são respectivamente: analisar as condutas características do stalker previstas no Código Penal Brasileiro, avaliar os desafios na tipificação e comprovação do crime de stalking, além de investigar as medidas de proteção e as sanções previstas para o stalker no Código Penal. Esta será de abordagem qualitativa e os dados serão coletados principalmente, através de pesquisa bibliográfica por fontes secundarias, livros artigos, entre outros. Entretanto podendo ser utilizadas outras fontes em sua complementação, como primarias como livros e artigos ou terciarias discussões acerca do tema e a análise dos mesmos será por meio de textos explicativos sobre a temática, sendo uma análise qualitativa, de modo com que se respondam dúvidas como: o que é um stalker para o código penal brasileiro? como funciona o crime de perseguição? qual a necessidade de legislação acerca do tema? Deste modo trazendo um entendimento mais abrangente sobre um tema tão atual e relevante.
Η άσκηση του επαγγέλματος του εκπαιδευτικού στην ελληνική Πρωτοβάθμια Εκπαίδευση: θεσμικό πλαίσιο-συνθήκες εργασίας-επαγγελματικός χρόνος
Creators: name: Μλεκάνης, Μιχαήλ Γ.,
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Εκπαιδευτικοί
Επαγγελματικός χρόνος
Teachers
Professional time

description: Η μελέτη εντάσσεται στην ευρύτερη θεματική της έρευνας της διδασκαλίας. Επικεντρώνεται: α)στο θεσμικό πλαίσιο και τις συνθήκες εργασίας και β) στον επαγγελματικό χρόνο των εκπαιδευτικών στην ελληνική Πρωτοβάθμια Εκπαίδευση. Στο πρώτο μέρος παρουσιάζεται το θεσμικό πλαίσιο και στο δεύτερο μέρος παρουσιάζονται, αναλύονται και ερμηνεύονται τα στοιχεία από τη διεξαγωγή έρευνας με αντικείμενο την άποψη των εκπαιδευτικών για τις συνθήκες εργασίας τους, τις αντιλήψεις τους για τις επιδράσεις που δέχονται από αυτές και το μέγεθος και την κατανομή του επαγγελματικού χρόνου
description: The study falls within the broader subject area of research on teaching. Focuses on : a)the statutory frame of education and the work conditions of educators and b)to the educator's professional time in greek primary education. In the first part, the statutory frame for the professional practice of the educator's profession at the first Level of Education in Greece is presented. In the second part, the data from an undertaken research research concerning the opinions of educators about their work conditions, their attitudes about the influences they recieve from those conditions and the magnitude and distribution of their professional time are presented, analysed and interpreted
Chiral Anomaly in Interacting Condensed Matter Systems
Creators: name: Rylands, Colin
name: Parhizkar, Alireza
name: Burkov, Anton A.
name: Galitski, Victor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The chiral anomaly is a fundamental quantum mechanical phenomenon which is of great importance to both particle physics and condensed matter physics alike. In the context of QED it manifests as the breaking of chiral symmetry in the presence of electromagnetic fields. It is also known that anomalous chiral symmetry breaking can occur through interactions alone, as is the case for interacting one dimensional systems. In this paper we investigate the interplay between these two modes of anomalous chiral symmetry breaking in the context of interacting Weyl semimetals. Using Fujikawa's path integral method we show that the chiral charge continuity equation is modified by the presence of interactions which can be viewed as including the effect of the electric and magnetic fields generated by the interacting quantum matter. This can be understood further using dimensional reduction and a Luttinger liquid description of the lowest Landau level. These effects manifest themselves in the non-linear response of the system. In particular we find an interaction dependent density response due to a change in the magnetic field as well as a contribution to the non-equilibrium and inhomogeneous anomalous Hall response while preserving its equilibrium value.
description: 4.5 pages
Dynamic analysis of a marine riser
Creators: name: Guo, Yongzhi
Publisher: name: University of British Columbia
Year: 2008

description: The problem of the dynamic analysis of a marine riser is considered in this thesis. The equations of motion for a marine riser undergoing large three dimensional deflections and rotations are derived using modal discretization approach. The nonlinear expressions for the bending and torsional deformations are obtained for a beam undergoing finite rotations. The elastic strain energy is expressed in terms of these deformations and the Lagrange equations are used to derive the equations of motion valid for large deformations. The three dimensional shear effect based on nonlinear elastic theory is included in the formulation. The dynamic response of a typical marine riser system due to excitations of the ocean waves, current and surface vessel motion is studied. The hydrodynamic loading on the riser is represented by a general form of the Morison equation. The nonlinearity of structure and drag force are completely retained and a numerical procedure in the time domain is developed. The effects of structural and hydrodynamic parameters on motion amplitude in two dimensional case are evaluated. Alternatively, the dynamic response of the simplified riser system is studied by an analytical approach based on Butenin's method. The Butenin's method involves less computational effort and the solution based on this method matches the numerical solutions well when the nonlinearities are small.
Μελέτη της επίδρασης της ορογραφίας στο πεδίο του ανέμου καθώς και στα πεδία άλλων μετεωρολογικών παραμέτρων στον ελληνικό χώρο
Creators: name: Ρεφενέ-Κατσιμάρδου, Μαρία-Φλώρα
Publisher: name: Aristotle University of Thessaloniki
Year: 2002
Subjects: Ορογραφία
Ανεμος
Μοντέλα Αριθμητικής Πρόγνωσης Καιρού
Orography
Wind
Models of Numerical Weather Prediction

description: Μελετήθηκε η επίδραση της ορογραφίας στα πεδία του ανέμου και του υετού στον ελληνικό χώρο με τη χρήση κατάλληλου αριθμητικού μοντέλου και την εισαγωγή της ορογραφίας της Ελλάδας σε αυτό. Αναζητήθηκε επίσης η καλύτερη δυνατή παράσταση της ορογραφίας στο αριθμητικό μοντέλο. Καθορίσθηκαν με κατάλληλη μεθοδολογία τέσσερις τύποι ορογραφίας, η βαρυκεντρική μέση ορογραφία, δύο περιβάλλουσες ορογραφίες που προκύπτουν με αύξηση της βαρυκεντρικής μέσης ορογραφίας κατά μια τυπική απόκλιση και κατά δύο τυπικές αποκλίσεις, αντίστοιχα, και ένας τέταρτος τύπος ορογραφίας με το υψόμετρο σε όλα τα σημεία του πλέγματος να μην υπερβαίνει τα 100m. Μελετήθηκαν τα αποτελέσματα του μοντέλου με αυτούς τους τέσσερις τύπους ορογραφίας, για ένδεκα περιπτώσεις, που κάλυπταν βασικές διευθύνσεις ανέμου στον ελληνικό χώρο. Με βάση συνοπτική και αντικειμενική αξιολόγηση, διαπιστώθηκε πόσο σημαντική είναι η επίδραση της ορογραφίας στο πεδίο των ισοβαρών, του ανέμου και των ισοϋψών στην κατώτερη τροπόσφαιρα, καθώς και του υετού. Η μελέτη έδειξε, επίσης υπεροχή της περιβάλλουσας ορογραφίας με μία τυπική απόκλιση
description: The influence of orography on the fields of wind and precipitation over the area of Greece was studied using an explicit representation of orography in a suitable for mountainous areas model. The best possible representation of the orography in the model was also investigated. By means of a suitable methodology, four types of orography were defined : the weighted mean orography, two envelope orographies resulting from the weighted mean increased by one standard deviation and by two standard deviations correspodingly. A fourth type of orography was also defined with the height at each point of the model grid being less or equal to 100m. Eleven cases, which covered basic directions of wind over Greece, were chosen for the study and the model run four times for each case, each time with the same initial data but with different orography. The results showed how important is the influence of orography on the fields of isobars, of the precipitation as well as on the fields of wind and isolines of height of the isobaric surfaces in the lower troposphere. The objective and subjective evaluation showed also that the envelope orography with one standard deviation gives better results than all the others
VLBI analyses with the GINS software for multi-technique combination at the observation level
Creators: name: Bourda, G.
name: Charlot, P.
name: Biancale, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A rigorous approach to simultaneously determine a Terrestrial Reference Frame (TRF) and Earth Orientation Parameters (EOP) is now currently applied on a routine basis in a coordinated project within the Groupe de Recherches de Géodésie Spatiale (GRGS) in France. Observations of the various space geodetic techniques (VLBI, SLR, LLR, DORIS and GPS) are separately processed by different analysis centers with the software package GINS-DYNAMO, developed and maintained at the GRGS/CNES (Toulouse). This project is aimed at facilitating fine geophysical analyses of the global Earth system (GGOS project). In this framework, Bordeaux Observatory is in charge of the VLBI (Very Long Baseline Interferometry) analyses with GINS for combination with the data of the other space geodetic techniques at the observation level. In this paper, we present (i) the analyses undertaken with this new VLBI software, and (ii) the results obtained for the EOP from beginning 2005 until 2007. Finally, we compare this EOP solution with the IVS (International VLBI Service) Analysis Coordinator combined results. The agreement is at the 0.2 mas level, comparable to that of the other IVS Analysis Centers, which demonstrates the VLBI capability of the GINS software.
A template bank to search for gravitational waves from inspiralling compact binaries I: physical models
Creators: name: Babak, S.
name: Balasubramanian, R.
name: Churches, D.
name: Cokelaer, T.
name: Sathyaprakash, B. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational waves from coalescing compact binaries are searched using the matched filtering technique. As the model waveform depends on a number of parameters, it is necessary to filter the data through a template bank covering the astrophysically interesting region of the parameter space. The choice of templates is defined by the maximum allowed drop in signal-to-noise ratio due to the discreteness of the template bank. In this paper we describe the template-bank algorithm that was used in the analysis of data from the Laser Interferometer Gravitational Wave Observatory (LIGO) and GEO 600 detectors to search for signals from binaries consisting of non-spinning compact objects. Using Monte-Carlo simulations, we study the efficiency of the bank and show that its performance is satisfactory for the design sensitivity curves of ground-based interferometric gravitational wave detectors GEO 600, initial LIGO, advanced LIGO and Virgo. The bank is efficient to search for various compact binaries such as binary primordial black holes, binary neutron stars, binary black holes, as well as a mixed binary consisting of a non-spinning black hole and a neutron star.
description: 22 pages, 22 figures, This version incorporates minor modifications with respect to v4
'Fragmentsammlungen philosophischer Texte der Antike – Le raccolte dei frammenti di filosofi antichi'. Atti del Seminario Internazionale. Ascona, Centro Stefano Franscini, 22-27 Settembre 1996, hrsg. v. Walter Burkert, Laura Gemelli Marciano, Elisabetta Matelli, Lucia Orelli
Creators: name: Dorandi, Tiziano
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: 'Fragmentsammlungen philosophischer Texte der Antike – Le raccolte dei frammenti di filosofi antichi'. Atti del Seminario Internazionale. Ascona, Centro Stefano Franscini, 22-27 Settembre 1996, hrsg. v. Walter Burkert, Laura Gemelli Marciano, Elisabetta Matelli, Lucia Orelli (Aporemata; Band 3), Göttingen, Vandenhoeck & Ruprecht 1998. XIII + 434 p.
description: Göttinger Forum für Altertumswissenschaft, Bd. 1 (1998): Göttinger Forum für Altertumswissenschaft
Implementation and evaluation of an intelligent tuner for an ill-defined servo-motor system
Creators: name: Barlev, Shimshon
Publisher: name: University of British Columbia
Year: 2008

description: This research deals with automated, knowledge-based tuning of servo motors. Conventional adaptive techniques can perform unsatisfactorily when the controlled system is complex and incompletely known. Furthermore, they cannot directly capture and utilize the knowledge of experienced human operators, in tuning a servo system. The tuning technique developed and implemented in this work can overcome these shortcomings. To integrate the controller of a high speed servo-motor with the tuning knowledge of experienced system operators, a hierarchical control structure is developed in this research. Specifically, the programmable hard controller of a servo-motor is tuned automatically in the lowest level. In the highest level, tuning knowledge expressed as a set of linguistic rules is generated and mathematically formulated using fuzzy set theory and fuzzy logic. This leads to the development of an off-line decision table in which tuning actions are matched with the servo-motor performance. A computer implementation of a servo expert is used in the intermediate level to update the controller parameters so that the actual response would meet a set of predefined performance specifications expressed in terms of the performance of a reference model. Learning and self-organization, as well as automated specification updating, if necessary, are used to improve the performance accuracy and system robustness. The intelligent tuner is implemented on a commercially available servo-motor system, and experiments are carried out to demonstrate its performance when implemented on the physical system. Furthermore, simulation results are used to evaluate the performance of the intelligent tuner when implemented on an ill-defined process.
Experimental unsaturated soil mechanics
Creators: name: Delage, Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In this general report, experimental systems and procedures of investigating the hydro-mechanical behaviour of unsaturated soils are presented. The water retention properties of unsaturated soils are commented and linked to various physical parameters and properties of the soils. Techniques of controlling suction are described together with their adaptation in various laboratory testing devices. Some typical features of the mechanical behaviour of unsaturated soils are presented within an elasto-plastic framework. An attempt to describe the numerous and significant recent advances in the investigation of the behaviour of unsaturated soils, including the contributions to this Conference, is proposed.
Gregor Maurach, Lateinische Stilübungen. Ein Lehrbuch zum Selbstunterricht
Creators: name: Heine, Rolf
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Gregor Maurach, Lateinische Stilübungen. Ein Lehrbuch zum Selbstunterricht, Wissenschaftliche Buchgesellschaft, Darmstadt 1997. VII + 160 Seiten.
description: Göttinger Forum für Altertumswissenschaft, Bd. 1 (1998): Göttinger Forum für Altertumswissenschaft
Μη γραμμική συμπεριφορά ημιαγωγικών διατάξεων a-Si/Si(p)Si(n)
Creators: name: Κυρίτση, Κωνσταντία
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Μη γραμμικές ιδιότητες
Διατάξεις πυριτίου(Si)
Non linear properties
Silicon devices

description: Ηλεκτρικές ταλαντώσεις εμφανίζονται στην περιοχή NDR των χαρακτηριστικών I-U, που ελέγχονται από το ρεύμα, στη διάταξη α-Si/Si(p)/Si(n). Ο αντίστοιχος ελκυστής χαρακτηρίζεται από τη διάσταση συσχετισμού του v και από την ελάχιστη διάσταση ενεπόθεσης του m(min) αντίστοιχα. Οσο αυξάνεται η τάση U(BE) παραμένει σταθερή, ίση με 2 και η διάσταση συσχετισμού v αυξάνεται λαμβάνοντας πάντα μη ακέραιες τιμές, χαμηλότερες της m(min). Επίσης μελετήθηκε η επίδραση του εξωτερικού θορύβου στις ταλαντώσεις. Βρέθηκε ότι οι ταλαντώσεις επηρεάζονται μόνο όταν ο θόρυβος είναι μεγαλύτερος από το 10% του αρχικού, χωρίς θόρυβο, σήματος. Η αντίστοιχη διάσταση συσχετισμού παρουσιάζει παρόμοια συμπεριφορά. Επίσης μελετήθηκε η επίδραση του ρυθμού δειγματοληψίας των αντίστοιχων χρονοσειρών
description: Electrical oscillations appear in the NDR-region of the current controlled I-U characteristic of the a-Si/Si(p)/Si(n) device. The corresponding attractor is characterized by its correlation- and minimum embedding dimension v and m(min), respectively. As the voltage U(BE), applied in the Si(p)-region increases, m(min)remains constant, equal to 2 and v increases obtaining always non integer values, lower than m(min). Also the influence of the external noise on the oscillations is studied. It is found that the are influenced only if the noise exceeds 10% of the initial noise-free signal. The corresponding correlation dimension v shows a similar behaviour. The influence of the sampling rate of the corresponding time-series is also examined
On the single leptoquark solutions to the $B$-physics anomalies
Creators: name: Angelescu, Andrei
name: Bečirević, Damir
name: Faroughy, Darius A.
name: Jaffredo, Florentin
name: Sumensari, Olcyr
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We revisit the possibilities of accommodating the experimental indications of the lepton flavor universality violation in $b$-hadron decays in the minimal scenarios in which the Standard Model is extended by the presence of a single $\mathcal{O}(1\,\mathrm{TeV})$ leptoquark state. To do so we combine the most recent low energy flavor physics constraints, including $R_{K^{(\ast)}}^\mathrm{exp}$ and $R_{D^{(\ast)}}^\mathrm{exp}$, and combine them with the bounds on the leptoquark masses and their couplings to quarks and leptons as inferred from the direct searches at the LHC and the studies of the large $p_T$ tails of the $pp\to \ell\ell$ differential cross section. We find that none of the scalar leptoquarks of $m_\mathrm{LQ} \simeq 1÷2$ TeV can accommodate the $B$-anomalies alone. Only the vector leptoquark, known as $U_1$, can provide a viable solution which, in the minimal setup, provides an interesting prediction, i.e. a lower bound to the lepton flavor violating $b\to sμ^\pmτ^\mp$ decay modes, such as $\mathcal{B}(B\to Kμτ) \gtrsim 0.7\times 10^{-7}$.
description: 12 pages, 5 figures (10 plots) [v2: references added, Fig. 3 improved]
Dissipation effects in percolating quantum Ising magnets
Creators: name: Hoyos, J. A.
name: Vojta, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the effects of dissipation on a randomly dilute transverse-field Ising magnet at and close to the percolation threshold. For weak transverse fields, a novel percolation quantum phase transition separates a super-paramagnetic cluster phase from an inhomogeneously ordered ferromagnetic phase. The properties of this transition are dominated by large frozen and slowly fluctuating percolation clusters. Implementing numerically a strong-disorder real space renormalization group technique, we compute the low-energy density of states which is found to be in good agreement with the analytical prediction.
description: 2 pages, 1 eps figure, final version as published
Christian Wacker, Das Gymnasion in Olympia. Geschichte und Funktion
Creators: name: Mango, Elena
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Christian Wacker, Das Gymnasion in Olympia. Geschichte und Funktion ( =Würzburger Forschungen zur Altertumskunde 2), Ergon Verlag, Würzburg 1996. 250 Seiten, 82 Abbildungen.
description: Göttinger Forum für Altertumswissenschaft, Bd. 1 (1998): Göttinger Forum für Altertumswissenschaft
Distributionally Weighted Least Squares in Structural Equation Modeling
Creators: name: Du, Han
name: Bentler, Peter M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In real data analysis with structural equation modeling, data are unlikely to be exactly normally distributed. If we ignore the non-normality reality, the parameter estimates, standard error estimates, and model fit statistics from normal theory based methods such as maximum likelihood (ML) and normal theory based generalized least squares estimation (GLS) are unreliable. On the other hand, the asymptotically distribution free (ADF) estimator does not rely on any distribution assumption but cannot demonstrate its efficiency advantage with small and modest sample sizes. The methods which adopt misspecified loss functions including ridge GLS (RGLS) can provide better estimates and inferences than the normal theory based methods and the ADF estimator in some cases. We propose a distributionally-weighted least squares (DLS) estimator, and expect that it can perform better than the existing generalized least squares, because it combines normal theory based and ADF based generalized least squares estimation. Computer simulation results suggest that model-implied covariance based DLS (DLS_M) provided relatively accurate and efficient estimates in terms of RMSE. In addition, the empirical standard errors, the relative biases of standard error estimates, and the Type I error rates of the Jiang-Yuan rank adjusted model fit test statistic (T_JY) in DLS_M were competitive with the classical methods including ML, GLS, and RGLS. The performance of DLS_M depends on its tuning parameter a. We illustrate how to implement DLS_M and select the optimal a by a bootstrap procedure in a real data example.
Polarization Transport of Transverse Acoustic Waves: Berry Phase and Spin Hall Effect of Phonons
Creators: name: Bliokh, K. Yu.
name: Freilikher, V. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We carry out a detailed analysis of the short-wave (semiclassical) approximation for the linear equations of the elasticity in a smoothly inhomogeneous isotropic medium. It is shown that the polarization properties of the transverse waves are completely analogous to those of electromagnetic waves and can be considered as spin properties of optical phonons. In particular, the Hamiltonian of the transverse waves contains an additional term of the phonon spin-orbit interaction arising from the Berry gauge potential in the momentum space. This potential is diagonal in the basis of the circularly polarized waves and corresponds to the field of two `magnetic monopoles' of opposite signs for phonons of opposite helicities. This leads to the appearance of the Berry phase in the equation for the polarization evolution and an additional ``anomalous velocity'' term in the ray equations. The anomalous velocity has the form of the `Lorentz force' caused by the Berry gauge field in momentum space and gives rise to the transverse transport of waves of opposite helicities in opposite directions. This is a manifestation of the spin Hall effect of optical phonons. The effect directly relates to the conservation of total angular momentum of phonons and also influences reflection from a sharp boundary (acoustic analogue of the transverse Ferdorov--Imbert shift).
description: 18 pages, 1 figure, to appear in Phys. Rev. B
The nested SU(N) off-shell Bethe ansatz and exact form factors
Creators: name: Babujian, Hratchia M.
name: Foerster, Angela
name: Karowski, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The form factor equations are solved for an SU(N) invariant S-matrix under the assumption that the anti-particle is identified with the bound state of N-1 particles. The solution is obtained explicitly in terms of the nested off-shell Bethe ansatz where the contribution from each level is written in terms of multiple contour integrals.
description: This work is dedicated to the 75th anniversary of H. Bethe's foundational work on the Heisenberg chain