cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simulating the propagation of active worms
Creators: name: Fan, Xiang
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 460609
subject: Networking and communications

description: Research aims at finding "an effective defense mechanism to curb the rapid propagation of active worms by gaining a deep insight into the propagation mechanisms employed by past active worms and the potential propagation mechanisms that could be employed by future active worms"--p. 14.
Marcel Aubert - Louis Grodecki - Jean Lafond - Jean Verrier, Les Vitraux de Notre-Dame et de la Sainte Chapelle de Paris
Creators: name: Wentzel, Hans
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: Marcel Aubert - Louis Grodecki - Jean Lafond - Jean Verrier, Les Vitraux de Notre-Dame et de la Sainte Chapelle de Paris (Corpus Vitrearum Medii Aevi, France I, Departement de Seine I), Caisse Nationale des Monuments Historiques, Paris 1959, 360 Seiten, davon 101 Tafeln und 8 Farbtafeln; 16 Textabb.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 2 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Recent Results of the ATLAS Upgrade Planar Pixel Sensors R&D Project
Creators: name: Weigell, Philipp
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: To cope with the higher occupancy and radiation damage at the HL-LHC also the LHC experiments will be upgraded. The ATLAS Planar Pixel Sensor R&D Project (PPS) is an international collaboration of 17 institutions and more than 80 scientists, exploring the feasibility of employing planar pixel sensors for this scenario. Depending on the radius, different pixel concepts are investigated using laboratory and beam test measurements. At small radii the extreme radiation environment and strong space constraints are addressed with very thin pixel sensors active thickness in the range of (75-150) mum, and the development of slim as well as active edges. At larger radii the main challenge is the cost reduction to allow for instrumenting the large area of (7-10) m^2. To reach this goal the pixel productions are being transferred to 6 inch production lines and more cost-efficient and industrialised interconnection techniques are investigated. Additionally, the n-in-p technology is employed, which requires less production steps since it relies on a single-sided process. Recent accomplishments obtained within the PPS are presented. The performance in terms of charge collection and efficiency, obtained with radioactive sources in the laboratory and at beam tests, is presented for devices built from sensors of different vendors connected to either the present ATLAS chip FE-I3 or the new Insertable B-Layer chip FE-I4. The devices, with a thickness varying between 75 mum and 300 mum, were irradiated to several fluences up to 2e16 neq/cm. Finally, the different approaches followed inside the collaboration to achieve slim or active edges are presented.
description: Proceedings for the Pixel 2012, 7 pages, 6 figures, accepted by NIM A
Does loop quantum cosmology replace the big rip singularity by a non-singular bounce?
Creators: name: de Haro, Jaume
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is stated that holonomy corrections in loop quantum cosmology introduce a modification in Friedmann's equation which prevent the big rip singularity. Recently in \cite{h12} it has been proved that this modified Friedmann equation is obtained in an inconsistent way, what means that the results deduced from it, in particular the big rip singularity avoidance, are not justified. The problem is that holonomy corrections modify the gravitational part of the Hamiltonian of the system leading, after Legendre's transformation, to a non covariant Lagrangian which is in contradiction with one of the main principles of General Relativity. A more consistent way to deal with the big rip singularity avoidance is to disregard modification in the gravitational part of the Hamiltonian, and only consider inverse volume effects \cite{bo02a}. In this case we will see that, not like the big bang singularity, the big rip singularity survives in loop quantum cosmology. Another way to deal with the big rip avoidance is to take into account geometric quantum effects given by the the Wheeler-De Witt equation. In that case, even though the wave packets spread, the expectation values satisfy the same equations as their classical analogues. Then, following the viewpoint adopted in loop quantum cosmology, one can conclude that the big rip singularity survives when one takes into account these quantum effects. However, the spreading of the wave packets prevents the recover of the semiclassical time, and thus, one might conclude that the classical evolution of the universe come to and end before the big rip is reached. This is not conclusive because. as we will see, it always exists other external times that allows us to define the classical and quantum evolution of the universe up to the big rip singularity.
description: Accepted for publication in JCAP
Arno Schönberger/Halldor Soehner, Die Welt des Rokoko. Kunst und Kultur des 18. Jahrhunderts
Creators: name: Hüttinger, Eduard
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: Arno Schönberger/Halldor Soehner, Die Welt des Rokoko. Kunst und Kultur des 18. Jahrhunderts. Unter Mitarbeit von Professor Theodor Müller. Verlag Georg D. W. Callwey, München 1959. 104 und XXXII S., 316 Abbildungen und 49 Farbtafeln.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 2 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Ausstellungskataloge und Museumsberichte
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 2 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Beyond adiabatic elimination: A hierarchy of approximations for multi-photon processes
Creators: name: Paulisch, Vanessa
name: Han, Rui
name: Ng, Hui Khoon
name: Englert, Berthold-Georg
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In multi-level systems, the commonly used adiabatic elimination is a method for approximating the dynamics of the system by eliminating irrelevant, non-resonantly coupled levels. This procedure is, however, somewhat ambiguous and it is not clear how to improve on it systematically. We use an integro-differential equation for the probability amplitudes of the levels of interest, which is equivalent to the original Schrodinger equation for all probability amplitudes. In conjunction with a Markov approximation, the integro-differential equation is then used to generate a hierarchy of approximations, in which the zeroth order is the adiabatic-elimination approximation. It works well with a proper choice of interaction picture; the procedure suggests criteria for optimizing this choice. The first-order approximation in the hierarchy provides significant improvements over standard adiabatic elimination, without much increase in complexity, and is furthermore not so sensitive to the choice of interaction picture. We illustrate these points with several examples.
description: 11 pages, 6 figures. Version 2 has a different title, and expands on version 1 with more in-depth discussion and examples
Value relevance of accounting information during a financial crisis: An empirical analysis of Australian companies
Creators: name: Bepari, Md Khokan
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 350103
subject: Financial accounting

description: "This thesis extends value relevance research by examining the changes in the value relevance of fundamental accounting measures in the unique context of a global financial crisis (GFC). This thesis examines the impact of the 2008-2009 GFC on the value relevance of book value of equity, earnings and cash flow from operations (CFO). It also examines the impact of the GFC on the value relevance of tangible assets, intangible assets and goodwill. ... This thesis is positioned into the CMR in Accounting. Positivist epistemology and objective ontology underpin the philosophical backgrounds of this thesis"--Abstract.
Properties of the outer crust of strongly magnetized neutron stars from Hartree-Fock-Bogoliubov atomic mass models
Creators: name: Chamel, N.
name: Pavlov, R. L.
name: Mihailov, L. M.
name: Velchev, Ch. J.
name: Stoyanov, Zh. K.
name: Mutafchieva, Y. D.
name: Ivanovich, M. D.
name: Pearson, J. M.
name: Goriely, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The equilibrium properties of the outer crust of cold nonaccreting magnetars (i.e. neutron stars endowed with very strong magnetic fields) are studied using the latest experimental atomic mass data complemented with a microscopic atomic mass model based on the Hartree-Fock-Bogoliubov method. The Landau quantization of electron motion caused by the strong magnetic field is found to have a significant impact on the composition and the equation of state of crustal matter. It is also shown that the outer crust of magnetars could be much more massive than that of ordinary neutron stars.
description: 25 pages, 5 figures, revised version
Bericht der Abteilung für ur- und frühgeschichtliche Bodendenkmalpflege am Niedersächsischen Landesmuseuni Hannover
Creators: name: Claus, Martin
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Strict supports of canonical measures and applications to the geometric Bogomolov conjecture
Creators: name: Yamaki, Kazuhiko
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The Bogomolov conjecture claims that a closed subvariety containing a dense subset of small points is a special kind of subvarieties. In the arithmetic setting over number fields, the Bogomolov conjecture for abelian varieties has already been established as a theorem of Ullmo and Zhang, but in the geometric setting over function field, it has not yet been solved completely. There are only some partial results known such as the totally degenerate case due to Gubler and our recent work generalizing Gubler's result. The key in establishing the previous results on the Bogomolov conjecture is the equidistribution method due to Szpiro--Ullmo--Zhang with respect to the canonical measures. In this paper, we exhibit the limit of this method, making an important contribution to the geometric version of the conjecture. In fact, by the crucial investigation of the support of the canonical measure on a subvariety, we show that the conjecture in full generality holds if the conjecture holds for abelian varieties which have anywhere good reduction. As a consequence, we establish a partial answer that generalizes our previous result.
description: Reference [28] is added. To appear in Compositio Mathematica. Different from the published version
Reconceptualising mentoring using triads in pre-service teacher education professional placements
Creators: name: Ambrosetti, Angelina
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 390307
subject: Teacher education and professional development of educators

description: "This research focuses specifically on the pre-service teacher during professional placement. This research investigates the pre-service teacher's role as well as the mentor teacher's role in mentoring relationships during their professional placements. It also investigates the use of peer mentors within a mentoring triad model. In the research, the mentoring triad consists of a mentor teacher, a first year pre-service teacher and a final year pre-service teacher"--Abstract.
Jacob-Friesen, K. H.: Einführung in Niedersachsens Urgeschichte. II. Teil Bronzezeit
Creators: name: Struve, Karl Wilhelm
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Jacob-Friesen, K. H.: Einführung in Niedersachsens Urgeschichte. II. Teil Bronzezeit. Verlag August Lax, Hildesheim 1963, Seite 205—388; 186 Textabbildungen und 14 Tafeln
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Offa. Berichte und Mitteilungen aus dem Schleswig-Holsteinischen Landesmuseum für Vor- und Frühgeschichte in Schleswig, dem Landesamt für Vor- und Frühgeschichte von Schleswig-Holstein in Schleswig und dem Institut für Ur- und Frühgeschichte an der Univer
Creators: name: Genrich, Albert
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Offa. Berichte und Mitteilungen aus dem Schleswig-Holsteinischen Landesmuseum für Vor- und Frühgeschichte in Schleswig, dem Landesamt für Vor- und Frühgeschichte von Schleswig-Holstein in Schleswig und dem Institut für Ur- und Frühgeschichte an der Universität Kiel. Band 19, Neumünster 1962. Format 21X30 cm, 176 Seiten, 10 Kunstdrucktafeln und viele Abbildungen im Text
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
Shell Models of Magnetohydrodynamic Turbulence
Creators: name: Plunian, Franck
name: Stepanov, Rodion
name: Frick, Peter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Shell models of hydrodynamic turbulence originated in the seventies. Their main aim was to describe the statistics of homogeneous and isotropic turbulence in spectral space, using a simple set of ordinary differential equations. In the eighties, shell models of magnetohydrodynamic (MHD) turbulence emerged based on the same principles as their hydrodynamic counter-part but also incorporating interactions between magnetic and velocity fields. In recent years, significant improvements have been made such as the inclusion of non-local interactions and appropriate definitions for helicities. Though shell models cannot account for the spatial complexity of MHD turbulence, their dynamics are not over simplified and do reflect those of real MHD turbulence including intermittency or chaotic reversals of large-scale modes. Furthermore, these models use realistic values for dimensionless parameters (high kinetic and magnetic Reynolds numbers, low or high magnetic Prandtl number) allowing extended inertial range and accurate dissipation rate. Using modern computers it is difficult to attain an inertial range of three decades with direct numerical simulations, whereas eight are possible using shell models. In this review we set up a general mathematical framework allowing the description of any MHD shell model. The variety of the latter, with their advantages and weaknesses, is introduced. Finally we consider a number of applications, dealing with free-decaying MHD turbulence, dynamo action, Alfven waves and the Hall effect.
description: published in Physics Reports
Microscopic Mechanism of Shear Bands in Amorphous Solids
Creators: name: Dasgupta, Ratul
name: Hentschel, H. George E.
name: Procaccia, Itamar
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The fundamental instability responsible for the shear localization which results in shear bands in amorphous solids remains unknown despite enormous amount of research, both experimental and theoretical. As this is the main mechanism for the failure of metallic glasses, understanding the instability is invaluable in finding how to stabilize such materials against the tendency to shear localize. In this Letter we explain the mechanism for shear localization under shear, which is the appearance of highly correlated lines of Eshelby-like quadrupolar singularities which organize the non-affine plastic flow of the amorphous solid into a shear band. We prove analytically that such highly correlated solutions in which $\C N$ quadrupoles are aligned with equal orientations are minimum energy states when the strain is high enough. The line lies at 45 degrees to the compressive stress.
Alfred Rust: Vor 20 000 Jahren, Rentierjäger der Eiszeit
Creators: name: Müller-Beck, Hansjürgen
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Alfred Rust: Vor 20 000 Jahren, Rentierjäger der Eiszeit. Karl Wachholtz Verlag, Neumünster. 2. überarbeitete und erweiterte Auflage
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 32 (1963): Nachrichten aus Niedersachsens Urgeschichte
CP violation and mass hierarchy at medium baselines in the large theta(13) era
Creators: name: Dusini, S.
name: Longhin, A.
name: Mezzetto, M.
name: Patrizii, L.
name: Sioli, M.
name: Sirri, G.
name: Terranova, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The large value of theta(13) recently measured by rector and accelerator experiments opens unprecedented opportunities for precision oscillation physics. In this paper, we reconsider the physics reach of medium baseline superbeams. For theta(13) ~ 9 degree we show that facilities at medium baselines -- i.e. L ~ O(1000 km) -- remain optimal for the study of CP violation in the leptonic sector, although their ultimate precision strongly depends on experimental systematics. This is demonstrated in particular for facilities of practical interest in Europe: a CERN to Gran Sasso and CERN to Phyasalmi nu_mu beam based on the present SPS and on new high power 50 GeV proton driver. Due to the large value of theta(13), spectral information can be employed at medium baselines to resolve the sign ambiguity and determine the neutrino mass hierarchy. However, longer baselines, where matter effects dominate the nu_mu->nu_e transition, can achieve much stronger sensitivity to sign(Delta m^2) even at moderate exposures.
description: 14 pages, 14 figures, version to appear in EPJC
Constrained SUSY seesaws with a 125 GeV Higgs
Creators: name: Hirsch, M.
name: Joaquim, F. R.
name: Vicente, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the ATLAS and CMS discovery of a Higgs-like boson with a mass around 125 GeV, and by the need of explaining neutrino masses, we analyse the three canonical SUSY versions of the seesaw mechanism (type I, II and III) with CMSSM boundary conditions. In type II and III cases, SUSY particles are lighter than in the CMSSM (or the constrained type I seesaw), for the same set of input parameters at the universality scale. Thus, to explain $m_{h^0} \simeq 125 GeV$ at low energies, one is forced into regions of parameter space with very large values of $m_0$, $M_{1/2}$ or $A_0$. We compare the squark and gluino masses allowed by the ATLAS and CMS ranges for $m_{h^0}$ (extracted from the 2011-2012 data), and discuss the possibility of distinguishing seesaw models in view of future results on SUSY searches. In particular, we briefly comment on the discovery potential of LHC upgrades, for squark/gluino mass ranges required by present Higgs mass constraints. A discrimination between different seesaw models cannot rely on the Higgs mass data alone, therefore we also take into account the MEG upper limit on BR$(μ\to e γ)$ and show that, in some cases, this may help to restrict the SUSY parameter space, as well as to set complementary limits on the seesaw scale.
description: 28 pages, 7 figures. v2: comments and references added. Final version to appear in JHEP
Evolution of superconductivity in isovalent Te-substituted KxFe2-ySe2 crystals
Creators: name: Ozaki, Toshinori
name: Takeya, Hiroyuki
name: Deguchi, Keita
name: Demura, Satoshi
name: Hara, Hiroshi
name: Watanabe, Tohru
name: James, Denholme Saleem
name: Okazaki, Hiroyuki
name: Fujioka, Masaya
name: Yamaguchi, Takahide
name: Takano, Yoshihiko
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the evolution of superconductivity and the phase diagram of the KxFe2-ySe2-zTez (z=0-0.6) crystals grown by a simple one-step synthesis. No structural transition is observed in any crystals, while lattice parameters exhibit a systematic expansion with Te content. The Tc exhibits a gradual decrease with increasing Te content from Tconset = 32.9 K at z = 0 to Tconset = 27.9 K at z = 0.5, followed by a sudden suppression of superconductivity at z = 0.6. Upon approaching a Te concentration of 0.6, the shielding volume fraction decreases and eventually drops to zero. Simultaneously, hump positions in r-T curve shift to lower temperatures. These results suggest that isovalent substitution of Te for Se in KxFe2-ySe2 crystals suppresses the superconductivity in this system.
description: 10 pages, 1 table, 8 figures
Alon Hilu’s Death of a Monk as transgression
Creators: name: Rangell, Benjamin
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Hilu
Dialogue
Hebrew
Fiction
Utopia

description: Alon Hilu’s Death of a Monk (mot ha-nazir, 2004) is a historical novel about the Damascus Affair (1840) and the blood libel’s consequences for Aslan Farhi—a Jewish adolescent whose family was under suspicion during the time of the inquisitions. The Damascus Affair is well-suited to showcase history’s fraught relationship to linguistic representation because the facts of the event themselves are so indeterminate. As a result of this uncertainty, two divergent mythologies have contributed to sustaining the Affair’s relevance: For antisemites, the Affair confirmed previously held suspicions of ritual murder by the hands of Jewish citizens. For the generations of Jews who have studied the Affair, the event has become laden with protonationalist and even messianic significance. I argue that Hilu’s mode of writing is transgressive, primarily because it is engaged with the overlapping relationship between fiction and history. Using transgression as a common theme, I analyze three types of mixings or hybrids in the story itself (animality, dialogue and space). In doing so, I position Aslan’s as an anti-coming-of-age story, one in which the hero rejects the identities he inherits rather than being made by them.
Homogeneous Field and WKB Approximation In Deformed Quantum Mechanics with Minimal Length
Creators: name: Tao, Jun
name: Wang, Peng
name: Yang, Haitang
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of the deformed quantum mechanics with minimal length, we consider the motion of a non-relativistic particle in a homogeneous external field. We find the integral representation for the physically acceptable wave function in the position representation. Using the method of steepest descent, we obtain the asymptotic expansions of the wave function at large positive and negative arguments. We then employ the leading asymptotic expressions to derive the WKB connection formula, which proceeds from classically forbidden region to classically allowed one through a turning point. By the WKB connection formula, we prove the Bohr-Sommerfeld quantization rule up to $\mathcal{O}(β)$. We also show that, if the slope of the potential at a turning point is too steep, the WKB connection formula fall apart around the turning point.
description: 31 pages; v2: a new subsection about applications of WKB approximation and references added, published version
Design and development of digital smart meter network for distribution system
Creators: name: Rahman, Md Mustafizur
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 400899
subject: Electrical engineering not elsewhere classified

description: "The main objective of this study is to design and develop smart meter network to investigate the requirements of an efficient and reliable smart meter network. Research on smart meter network is limited and there is an increased demand for further research in this area since distribution network needs to uptake of green-house friendly technology and provide consumers better access to manage and control their power consumption. Furthermore, an effective integration of renewable energy sources with the distribution network will require smart meter network"--Abstract.
Quarkonium+$γ$ production in coherent hadron - hadron interactions at LHC energies
Creators: name: Goncalves, V. P.
name: Machado, M. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper we study the $H + γ$ ($H = J/Ψ$ and $Υ$) production in coherent hadron - hadron interactions at LHC energies. Considering the ultrarelativistic protons as a source of photons, we estimate the $γ+ p \rightarrow H + γ+ X$ cross section using the non-relativistic QCD (NRQCD) factorization formalism and considering different sets of values for the matrix elements. Our results for the total $ p + p \rightarrow p + H + γ+ X$ cross sections and rapidity distributions at $\sqrt{s} = 7$ and 14 TeV demonstrate that the experimental analysis of the $J/Ψ+ γ$ production at LHC is feasible.
description: 6 pages, 3 figures, 1 table. Improved version with a new figure. Version to be published in European Physical Journal C
Polyak type equations for virtual arrow diagram formulas in the annulus
Creators: name: Mortier, Arnaud
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We describe the space of arrow diagram formulas for virtual knot diagrams in the annulus as the kernel of a linear map, inspired from a conjecture due to M. Polyak. As a main application, we slightly improve Grishanov-Vassiliev's theorem for planar chain invariants.
description: 21 pages, 15 figures
Resonance at 125 GeV: Higgs or Dilaton/Radion?
Creators: name: Chacko, Zackaria
name: Franceschini, Roberto
name: Mishra, Rashmish K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the possibility that the new particle that has been observed at 125 GeV is not the Standard Model (SM) Higgs, but instead the dilaton associated with an approximate conformal symmetry that has been spontaneously broken. We focus on dilatons that arise from theories of technicolor, or from theories of the Higgs as a pseudo-Nambu-Goldstone boson (pNGB), that involve strong conformal dynamics in the ultraviolet. In the pNGB case, we are considering a framework where the Higgs particle is significantly heavier than the dilaton and has therefore not yet been observed. In each of the technicolor and pNGB scenarios, we study both the case when the SM fermions and gauge bosons are elementary, and the case when they are composites of the strongly interacting sector. Our analysis incorporates conformal symmetry violating effects, which are necessarily present since the dilaton is not massless, and is directly applicable to a broad class of models that stabilize the weak scale and involve strong conformal dynamics. Since the AdS/CFT correspondence relates the radion in Randall-Sundrum (RS) models to the dilaton, our results also apply to RS models with the SM fields localized on the infrared brane, or in the bulk. We identify the parameters that can be used to distinguish the dilatons associated with the several different classes of theories being considered from each other, and from the SM Higgs. We perform a fit to all the available data from several experiments and highlight the key observations to extract these parameters. We find that at present, both the technicolor and pNGB dilaton scenarios provide a good fit to the data, comparable to the SM Higgs. We indicate the future observations that will help to corroborate or falsify each scenario.
description: 41 pages, 4 figures. Analysis updated using current theoretical limits on dimensions of CFT operators. References added. Version to appear on JHEP
Smoking guns of a bounce in modified theories of gravity through the spectrum of the gravitational waves
Creators: name: Bouhmadi-Lopez, Mariam
name: Morais, Joao
name: Henriques, Alfredo B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an inflationary model preceded by a bounce in a metric theory a lá $f(R)$ where $R$ is the scalar curvature of the space-time. The model is asymptotically de Sitter such that the gravitational action tends asymptotically to a Hilbert-Einstein action, therefore modified gravity affects only the early stages of the universe. We then analyse the spectrum of the gravitational waves through the method of the Bogoliubov coefficients by two means: taking into account the gravitational perturbations due to the modified gravitational action in the $f(R)$ setup and by simply considering those perturbations inherent to the standard Hilbert-Einstein action. We show that there are distinctive (oscillatory) signals on the spectrum for very low frequencies; i.e. corresponding to modes that are currently entering the horizon.
description: 13 pages, 7 figures. Extensively expanded version. References added. Version accepted in PRD
Development of the Basketball Exercise Simulation Test (BEST) based on the activity demands of current open-age Australian male competition
Creators: name: Scanlan, Aaron
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 420799
subject: Sports science and exercise not elsewhere classified

description: "The present thesis firstly aimed to describe and compare the player activity demands within elite and sub-elite open-age Australian male basketball competitions ; and secondly develop a reliable and valid basketball simulation test based on these demands"--Overview.
Indefinite Einstein metrics on simple Lie groups
Creators: name: Derdzinski, Andrzej
name: Gal, Swiatoslaw R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C30, 53C50, 22E99

description: The set E of Levi-Civita connections of left-invariant pseudo-Riemannian Einstein metrics on a given semisimple Lie group always includes D, the Levi-Civita connection of the Killing form. For the groups SU(l,j) (or SL(n,R), or SL(n,C) or, if n is even, SL(n/2,IH)), with 0<=j<=l and j+l>2 (or, n>2), we explicitly describe the connected component C of E, containing D. It turns out that C, a relatively-open subset of E, is also an algebraic variety of real dimension 2lj (or, real/complex dimension [n^2/2] or, respectively, real dimension 4[n^2/8]), forming a union of (j + 1)(j + 2)/2 (or, [n^2]+1 or, respectively, [n/4] + 1) orbits of the adjoint action. In the case of SU(n) one has 2lj=0, so that a positive-definite multiple of the Killing form is isolated among suitably normalized left-invariant Riemannian Einstein metrics on SU(n).
description: numerous typos corrected; the quaternionic SL series added to the list of groups
The implementation of CAD/CAM technology at Schools of Dentistry: A short communication.
Creators: name: FERNANDES, Gustavo Vicentis de Oliveira
name: Nassani, Leonardo
Publisher: name: figshare
Year: 2023
Subjects: Dentistry not elsewhere classified

description: This short communication aimed to acquire and transmit information about inserting CAD/CAM technology in the dental school’s curriculum to better prepare dental students for new approaches. The CAD/CAM system implementation has occurred slowly in the dental curriculum at universities. In 2012, authors evaluated the use of CEREC, showing an educational tool impacting the cost-effectivity for patients. A similar result was found in 2013, with an appreciation of the marginal fit and esthetic obtained. In 2014, CAD/CAM was incorporated into the predoctoral curriculum at the Indiana University School of Dentistry, showing good or excellent overall learning. In 2017, a CAD/CAM system was implemented at the University of Illinois at Chicago College of Dentistry’s predoctoral implant program, which had an increased preference and proportion of implant restorations made digitally. In 2018, a German dental school used CAD/CAM in the curriculum of prosthetic education, obtaining a clear tendency for the use of this technology. In 2023, pre-doctoral dental students in the U.S.A. received a questionnaire that significantly improved their knowledge and attitude to using this technology; otherwise, student satisfaction was non-significant. In conclusion, integrating CAD/CAM technology into the curriculum has become an essential component of modern dental education.
Self reported emotional intelligence and its relationship to academic success
Creators: name: Willoughby, Samantha
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 520503
subject: Personality and individual differences

description: "Emotional intelligence (EI) is a relatively new psychological construct and is the focus of much debate. This debate is centered on the differences in the way EI is conceptualised and measured between the ability and the mixed model schools of thought. The ability model considers EI to be a form of intelligence similar to cognitive skill and can thus, be observed in an objective manner. In contrast, the mixed model considers EI to be a mix of cognitive and personality traits. Mixed model EI is typically assessed using self-report measures. Both models of EI have reported some good evidence to link the construct with organisational and personal well-being. This research had two main goals. The first goal was to address a common criticism of the mixed model. Researchers from the ability model routinely discredit mixed model approaches to EI by proposing that in essence, they are measuring personality and not intelligence. This study tests this criticism by including a measure of personality as well as EI to assess their relative contribution in explaining academic success. The second goal was to better understand the role of age and EI. The literature suggests a small linear relationship between these variables but the better studies suggest the effect of EI plateaus during mid-life. Thus, the hypotheses were tested by using two age groups; < 35 years old and 35 years. In addition, the study used a longitudinal design, collected both objective and subjective data and controlled for the effect of gender and social desirability"--Abstract.
Development of a method for early detection of rail squats using eddy current inspection
Creators: name: Mohan, Sajith
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 400512
subject: Transport engineering

description: "Squats are cracks that are initiated on/near the running surface of the rails and then grow deep into the rail head at a shallow angle.... This thesis details lthe development of an early method for the detectionof rail squats by focusing on the factors that lead to the initiation of squats on rails"--Abstract.
The Evolution of Protoplanetary Disks in the Arches Cluster
Creators: name: Olczak, C.
name: Kaczmarek, T.
name: Harfst, S.
name: Pfalzner, S.
name: Zwart, S. Portegies
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Most stars form in a cluster environment. These stars are initially surrounded by discs from which potentially planetary systems form. Of all cluster environments starburst clusters are probably the most hostile for planetary systems in our Galaxy. The intense stellar radiation and extreme density favour rapid destruction of circumstellar discs via photoevaporation and stellar encounters. Evolving a virialized model of the Arches cluster in the Galactic tidal field we investigate the effect of stellar encounters on circumstellar discs in a prototypical starburst cluster. Despite its proximity to the deep gravitational potential of the Galactic centre only a moderate fraction of members escapes to form an extended pair of tidal tails. Our simulations show that encounters destroy one third of the circumstellar discs in the cluster core within the first 2.5 Myr of evolution, preferentially affecting the least and most massive stars. A small fraction of these events causes rapid ejection and the formation of a weaker second pair of tidal tails that is overpopulated by disc-poor stars. Two predictions arise from our study: (i) If not destroyed by photoevaporation protoplanetary discs of massive late B- and early O-type stars represent the most likely hosts of planet formation in starburst clusters. (ii) Multi-epoch K- and L-band photometry of the Arches cluster would provide the kinematically selected membership sample required to detect the additional pair of disc-poor tidal tails.
description: 17 pages, 13 figures, accepted by ApJ
Inverting pump-probe spectroscopy for state tomography of excitonic systems
Creators: name: Hoyer, Stephan
name: Whaley, K. Birgitta
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We propose a two-step protocol for inverting ultrafast spectroscopy experiments on a molecular aggregate to extract the time-evolution of the excited state density matrix. The first step is a deconvolution of the experimental signal to determine a pump-dependent response function. The second step inverts the quantum state of the system from this response function, given a model for how the system evolves following the probe interaction. We demonstrate this inversion analytically and numerically for a dimer model system, and evaluate the feasibility of scaling it to larger molecular aggregates such as photosynthetic protein-pigment complexes. Our scheme provides a direct alternative to the approach of determining all Hamiltonian parameters and then simulating excited state dynamics.
description: 15 pages, 6 figures. This is the accepted version for publication in the Journal of Chemical Physics
Superconductivity at the onset of spin-density-wave order in a metal
Creators: name: Wang, Yuxuan
name: Chubukov, Andrey V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We revisit the issue of superconductivity at the quantum-critical point (QCP) between a 2D paramagnet and a spin-density-wave metal with ordering momentum (π,π). This problem is highly non-trivial because the system at criticality displays a non-Fermi liquid behavior and because the effective coupling constant λfor the pairing is generally of order one, even when the actual interaction is smaller than fermionic bandwidth. Previous study [M. A. Metlitski, S. Sachdev, Phys.Rev.B 82, 075128 (2010)] has found that the renormalizations of the pairing vertex are stronger than in BCS theory and hold in powers of \log^2 (1/T), like in color superconductivity. We analyze the full gap equation and argue that, for QCP problem, summing up of the leading logarithms does not lead to a pairing instability. Yet, we show that superconductivity has no threshold and appears even if the coupling is set to be small, because subleading logarithmical renormalizations diverge and give rise to BCS-like \log(1/T_c) \propto 1/λ. We argue that the analogy with BCS is not accidental as at small coupling superconductivity at a QCP predominantly comes from fermions which retain Fermi liquid behavior at criticality. We computed T_c for the actual λ\sim 1, and found that both Fermi-liquid and non-Fermi liquid fermions contribute to the pairing. The value of T_c agrees well with the numerical results.
description: 27 pages, 7 figures. Replaced with the published version (main text and supplementary material)
Fuzzy algorithms for image enhancement and edge detection
Creators: name: Anver, Mohamed
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 460203
subject: Evolutionary computation
classificationCode: 460204
subject: Fuzzy computation

description: In this thesis we investigate how artificial intelligent techniques, namely fuzzy logic and genetic/evolutionary algorithms can be used for digital image processing applications. We demonstrate our techniques with respect to two main research areas: removal of heavy impulse noise from corrupted gray scale images and edge detection in digital images. Very often fuzzy logic systems need to deal with large number of rules. This results in two major design issues: (i) How to formulate the fuzzy knowledge base using human expertise and experience? (ii) How to reduce the high computational power and the high processing times required? In this thesis we use evolutionary algorithms (including coevolutionary algorithms) to learn fuzzy knowledge bases to handle the design issue (i) described above, while using multi-layered and hierarchical fuzzy logic systems to reduce the number of rules and hence the computational overhead involved, thereby addressing issue (ii) stated above. In this research, when fuzzy rules are learnt using evolutionary algorithms, each individual in the evolutionary algorithm is appropriately encoded to uniquely represent the fuzzy knowledge base. The fitness of each individual in the evolutionary algorithm is calculated with respect to a predefined reference. In the case of an algorithm learning to enhance a digital image this reference is often associated with the uncorrupted perfect image. Designing multi-layered and hierarchical fuzzy structures involves breaking down the total number of rules, to be fed into multiple fuzzy layers in the system. This process needs careful consideration in forming the appropriate fuzzy layers as well as deciding the parameters to be input to different layers, so that the desired result is obtained with highest precision using the least computation time. Coevolutionary algorithms are powerful tools that can be used in situations where several factors contributing towards the system performance need to be learnt simultaneously. Here multiple populations consisting of candidate solutions are evolved in parallel and the fitness of individuals in each of the population are evaluated by forming a vector of candidate solutions selected from each population. The artificial intelligence techniques briefly described above will be used in this thesis with application to enhancement and edge detection in digital images.
Selection of tomato genotypes that hyperaccumulate cadmium, for use in phytoremediation of cadmium contaminated sites
Creators: name: Thi, Mar Mar
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 410601
subject: Land capability and soil productivity

description: "Presence of high levels of Cd in soils results in accumulation of Cd in the food crops. Consumption of CD rich food items can induce cancer as well as causing health impacts in humans. Accumulation of Cd in the soils and plants can also cause other environmental impacts. One way to minimise these adverse impacts would be to remove Cd from contaminated soils by chemical or biological means.... Techniques such as phytoremediation may be used to remove Cd from contaminated soils economically.... The aim of this study was to select genotypes of tomato that would grow well in media containing high concentrations of Cd and accumulate high concentrations of Cd in their shoot tissues, so that they may be used in phytoremediation of Cd contaminated sites"--Abstract.
Consumers’ perceptions of Jordanian banking service quality
Creators: name: Al-Jazzazi, Akram
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 350605
subject: Marketing management (incl. strategy and customer relations)

description: This thesis aimed to empirically test and develop a measure to assess Jordanian customers' perceptions of banking service quality (PBSQ). The findings show that PBSQ includes responsiveness, serviceability, customer-care, soft-service, compliance, and core-service, which then affect customer satisfaction. The findings also highlight the demographic differences and suggest market segmentation strategies.
Quantum mechanical limitations to spin diffusion in the unitary Fermi gas
Creators: name: Enss, Tilman
name: Haussmann, Rudolf
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We compute spin transport in the unitary Fermi gas using the strong-coupling Luttinger-Ward theory. In the quantum degenerate regime the spin diffusivity attains a minimum value of $D_s \simeq 1.3 \hbar/m$ approaching the quantum limit of diffusion for a particle of mass $m$. Conversely, the spin drag rate reaches a maximum value of $Γ_\sd \simeq 1.2 k_B T_F/\hbar$ in terms of the Fermi temperature $T_F$. The frequency-dependent spin conductivity $σ_s(ω)$ exhibits a broad Drude peak, with spectral weight transferred to a universal high-frequency tail $σ_s(ω\to\infty) = \hbar^{1/2}C/3π(mω)^{3/2}$ proportional to the Tan contact density $C$. For the spin susceptibility $χ_s(T)$ we find no downturn in the normal phase.
description: 5 pages, 4 figures; published version
Transcultural entrepreneurship: Embracing the “social” in social innovation & social entrepreneurship
Creators: name: Thomsen, Thomas
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 350706
subject: International business
classificationCode: 440107
subject: Social and cultural anthropology
classificationCode: 350704
subject: Entrepreneurship

description: Holistically, this work argues for greater research into the ‘social’ aspects of Social Entrepreneurship (SE) and Social Innovation (SI) in theory and in practice. The academic field of applied anthropology is leveraged in an attempt to ameliorate the lacuna in existing literature, proffering a new approach to SE and SI.