cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A limit on gas accretion onto close-in super-Earth cores from disk accretion
Creators: name: Ogihara, Masahiro
name: Hori, Yasunori
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The core-accretion model predicts that planetary cores as massive as super-Earths undergo runaway gas accretion to become gas giants. However, the exoplanet census revealed the prevalence of super-Earths close to their host stars, which should have avoided runaway gas accretion. In fact, mass-radius relationships of transiting planets suggest that some close-in super-Earths possess H$_2$/He atmospheres of ~ 0.1-10% by mass. Previous studies indicated that properties of a disk gas such as metallicity and the inflow/outflow cycle of a disk gas around a super-Earth can regulate accumulation of a H$_2$/He atmosphere onto itself. In this paper, we propose a new mechanism that radial mass accretion in a disk can limit the gas accretion onto super-Earth cores. Recent magneto-hydrodynamic simulations found that magnetically driven disk winds can drive a rapid gas flow near the disk surface. Such a rapid gas flow may slip out of a planetary core and regulate gas supply to an accreting gas onto the core. We performed N-body simulations for formation of super-Earths with accretion of atmospheres in a viscous accretion disk including effects of wind-driven accretion. We found that even super-Earth cores can avoid triggering runaway gas accretion if the inflow of a disk gas toward the cores is limited by viscous accretion. Our model predicts that super-Earths having H$_2$/He atmosphere of ~ 0.1-10 wt % form within $\lesssim$ 1 au of the central star, whereas gas giants are born in the outer region. This mechanism can explain the radial dependence of observed giant planets beyond the solar system.
description: 10 pages, 9 figures, accepted for publication in ApJ
Theory of many-fermion systems
Creators: name: Belitz, D.
name: Kirkpatrick, T. R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A general field-theoretical description of many-fermion systems, with or without quenched disorder, is developed. Starting from the Grassmannian action for interacting fermions, we first bosonize the theory by introducing composite matrix variables that correspond to two-fermion excitations and integrating out the fermion degrees of freedom. The saddle point solution of the resulting matrix field theory reproduces a disordered Hartree-Fock approximation and an expansion to Gaussian order about the saddle point corresponds to a disordered RPA-like theory. In the clean limit they reduce to the ordinary Hartree-Fock and random-phase approximations. We first concentrate on disordered systems, and perform a symmetry analysis that allows for a systematic separation of the massless modes from the massive ones. By treating the massive modes in a simple approximation, one obtains a technically satisfactory derivation of the generalized nonlinear sigma-model that has been used in the theory of metal-insulator transitions. The theory also allows for the treatment of other phase transitions in the disordered Fermi liquid. We further use renormalization group techniques to establish the existence of a disordered Fermi-liquid fixed point, and show that it is stable for all dimensions d>2. The so-called weak-localization effects can be understood as corrections to scaling near this fixed point. The general theory also allows for studying the clean limit. For that case we develop a loop expansion that corresponds to an expansion in powers of the screened Coulomb interaction, and that represents a systematic improvement over RPA. We corroborate the existence of a Fermi-liquid fixed point that is stable for all dimensions d>1, in agreement with other recent field-theoretical treatments of clean Fermi liquids.
description: 32 pp., REVTeX, psfig, 3 eps figs, final version as published
Using Topological Statistics to Detect Determinism in Time Series
Creators: name: Ortega, Guillermo J.
name: Louis, Enrique
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Statistical differentiability of the measure along the reconstructed trajectory is a good candidate to quantify determinism in time series. The procedure is based upon a formula that explicitly shows the sensitivity of the measure to stochasticity. Numerical results for partially surrogated time series and series derived from several stochastic models, illustrate the usefulness of the method proposed here. The method is shown to work also for high--dimensional systems and experimental time series
description: 23 RevTeX pages, 14 eps figures. To appear in Physical Review E
The light curve of the semiregular variable L2 Puppis: I. A recent dimming event from dust
Creators: name: Bedding, T. R.
name: Zijlstra, A. A.
name: Jones, A.
name: Marang, F.
name: Matsuura, M.
name: Retter, A.
name: Whitelock, P. A.
name: Yamamura, I.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The nearby Mira-like variable L2 Pup is shown to be undergoing an unprecedented dimming episode. The stability of the period rules out intrinsic changes to the star, leaving dust formation along the line of sight as the most likely explanation. Episodic dust obscuration events are fairly common in carbon stars but have not been seen in oxygen-rich stars. We also present a 10-micron spectrum, taken with the Japanese IRTS satellite, showing strong silicate emission which can be fitted with a detached, thin dust shell, containing silicates and corundum.
description: MNRAS (accepted)
title: Berichtigung zu Nr. 357 Gebührenordnung für den wirtschaftswissenschaftlichen Aufbaustudiengang
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Fakultät 10
Year: 2005
Subjects: subject: Berichtigung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 358
An Artificial Neuron Implemented on an Actual Quantum Processor
Creators: name: Tacchino, Francesco
name: Macchiavello, Chiara
name: Gerace, Dario
name: Bajoni, Daniele
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Artificial neural networks are the heart of machine learning algorithms and artificial intelligence protocols. Historically, the simplest implementation of an artificial neuron traces back to the classical Rosenblatt's `perceptron', but its long term practical applications may be hindered by the fast scaling up of computational complexity, especially relevant for the training of multilayered perceptron networks. Here we introduce a quantum information-based algorithm implementing the quantum computer version of a perceptron, which shows exponential advantage in encoding resources over alternative realizations. We experimentally test a few qubits version of this model on an actual small-scale quantum processor, which gives remarkably good answers against the expected results. We show that this quantum model of a perceptron can be used as an elementary nonlinear classifier of simple patterns, as a first step towards practical training of artificial quantum neural networks to be efficiently implemented on near-term quantum processing hardware.
description: 8 pages, 4 figures
title: eLearning: Die Zukunft von Technologie im „Medizinstudium 2020“
Creators: name: Rotgans, Jerome
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Charles Babbage und Ada Lovelace gelten durch die von Babbage 1837 entworfene Rechenmaschine „Analytical Engine“ als Vordenker des modernen universell programmierbaren Computers, während allerdings erst in den vergangenen Vierziger Jahren die ersten Apparate dieser Art[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsame Jahrestagung der Gesellschaft für Medizinische Ausbildung (GMA), des Arbeitskreises zur Weiterentwicklung der Lehre in der Zahnmedizin (AKWLZ) und der Chirurgischen Arbeitsgemeinschaft Lehre (CAL)
title: Gebührenordnung für den wirtschaftswissenschaftlichen Aufbaustudiengang an der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Fakultät 10
Year: 2005
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 357
Quantitative analysis of self-organized patterns in ombrotrophic peatlands
Creators: name: Béguin, Chloé
name: Brunetti, Maura
name: Kasparian, Jérôme
Publisher: name: arXiv
Year: 2019
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We numerically investigate a diffusion-reaction model of an ombrotrophic peatland implementing a Turing instability relying on nutrient accumulation. We propose a systematic and quantitative sorting of the vegetation patterns, based on the statistical analysis of the numbers and filling factor of clusters of both \textit{Sphagnum} mosses and vascular plants. In particular, we define the transition from \textit{Sphagnum}-percolating to vascular plant-percolating patterns as the nutrient availability is increased. Our pattern sorting allows us to characterize the peatland pattern stability under climate stress, including strong drought.
description: 14 pages, 7 figures
Energy-Momentum and Gauge Conservation Laws
Creators: name: Giachetta, G.
name: Mangiarotti, L.
name: Sardanashvily, G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We treat energy-momentum conservation laws as particular gauge conservation laws when generators of gauge transformations are horizontal vector fields on fibre bundles. In particular, the generators of general covariant transformations are the canonical horizontal prolongations of vector fields on a world manifold. This is the case of the energy-momentum conservation laws in gravitation theories. We find that, in main gravitational models, the corresponding energy-momentum flows reduce to the generalized Komar superpotential. We show that the superpotential form of a conserved flow is the common property of gauge conservation laws if generators of gauge transformations depend on derivatives of gauge parameters. At the same time, dependence of conserved flows on gauge parameters make gauge conservation laws form-invariant under gauge transformations.
description: 19 pages, LaTeX
title: Karriere als Medical Educator in der Medizinischen Ausbildung – Workshop für junge Lehrende
Creators: name: Eißner, Alexander
name: Huwendiek, Sören
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Die Gesellschaft für medizinische Ausbildung (GMA) hat sich zum Ziel gesetzt die Lehre in der medizinischen Aus- und Weiterbildung zu professionalisieren [ref:1]. Trotz der zunehmenden Professionalisierung der Medizinischen Ausbildung [ref:2] und Abgrenzung [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsame Jahrestagung der Gesellschaft für Medizinische Ausbildung (GMA), des Arbeitskreises zur Weiterentwicklung der Lehre in der Zahnmedizin (AKWLZ) und der Chirurgischen Arbeitsgemeinschaft Lehre (CAL)
On commutators of square-zero Hilbert space operators
Creators: name: Marcoux, Laurent W.
name: Radjavi, Heydar
name: Zhang, Yuanhang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary: 47B47, Secondary: 47A58

description: Let $\mathcal{H}$ be a complex, separable Hilbert space, and set $\mathfrak{c}($NIL$_2)=\{ MN - NM : N, M \in \mathcal{B}(\mathcal{H}), M^2 = 0 = N^2 \}$. When $\dim\, \mathcal{H}$ is finite, we characterise the set $\mathfrak{c}($NIL$_2)$ and its norm-closure CLOS$(\mathfrak{c}($NIL$_2))$. In the infinite-dimensional setting, we characterise the intersection of CLOS$(\mathfrak{c}($NIL$_2))$ with the set of biquasitriangular operators, and we exhibit an index obstruction to belonging to CLOS$(\mathfrak{c}($NIL$_2))$.
description: 34 pages
title: Interprofessionelle Lehre in den Gesundheitsberufen – das Graduiertenkolleg ILEGRA
Creators: name: Walkenhorst, Ursula
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Die Robert Bosch Stiftung fördert seit dem 01.10.2018 das Graduiertenkolleg „Interprofessionelle Lehre in den Gesundheitsberufen“ – ILEGRA, das in Kooperation zwischen der Universität Osnabrück (Institut für Gesundheitsforschung und Bildung) und dem Klinikum [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsame Jahrestagung der Gesellschaft für Medizinische Ausbildung (GMA), des Arbeitskreises zur Weiterentwicklung der Lehre in der Zahnmedizin (AKWLZ) und der Chirurgischen Arbeitsgemeinschaft Lehre (CAL)
title: Änderung der Ordnung des Zentrums für Mechatronik in Braunschweig (ZMB) der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig. Fakultät 1
Year: 2005
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 356
Mean values of multiplicative functions and applications to residue-class distribution
Creators: name: Pollack, Paul
name: Roy, Akash Singha
Publisher: name: arXiv
Year: 2024
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11A25, Secondary 11N36, 11N64

description: We provide a uniform bound on the partial sums of multiplicative functions under very general hypotheses. As an application, we give a nearly optimal estimate for the count of $n \le x$ for which the Alladi-Erdős function $A(n) = \sum_{p^k \parallel n} k p$ takes values in a given residue class modulo $q$, where $q$ varies uniformly up to a fixed power of $\log x$. We establish a similar result for the equidistribution of the Euler totient function $ϕ(n)$ among the coprime residues to the "correct" moduli $q$ that vary uniformly in a similar range, and also quantify the failure of equidistribution of the values of $ϕ(n)$ among the coprime residue classes to the "incorrect" moduli.
description: 14 pages. First paper in series with second paper arXiv:2311.04324. Similar motivating problem; shared introductory material
title: Understanding multi-functional materials through preparation and characterization of formate perovskites
Creators: name: Hope, Andrew
name: Mozur, Eve
Publisher: name: Colorado School of Mines. Arthur Lakes Library
Year: 2024

description: Multi-functional materials have been studied intensively for the last few decades for their interesting, coupled physical properties, and wide variety of potential applications: including high-density multi-state digital storage and small-scale magnetic or electric field sensors. Multi functional materials are a class of materials in which the electric dipole (positive and negative ends of the molecule) alignment, and magnetic properties are coupled. Thus, generating an electric response when the material is in a magnetic field and vice versa. However, there are few materials that exhibit this multi-functional behavior. Additionally, out of the materials that have been synthesized, many are lacking characterization data. Therefore, it is challenging to develop structure-property relationships and design principles for multi-functional materials. Our goal is to develop a framework such that we can properly engineer these materials or find a relationship between the crystal structure to the magnetic and dielectric properties. To achieve this goal, we will make a series of these multi-functional materials to understand these structure-property relationships. Structural characterization such as x-ray diffraction will determine trends in material structure. We plan on using magnetometry and dielectric spectroscopy under applied field conditions to study the functional properties.
PEDOGOGIK MAHORAT HAQIDA TUSHUNCHA, UNING O'QITUVCHI FAOLIYATIDAGI AHAMIYATI
Creators: name: Erkinova, Mohinur
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada boshlang’ich sinf o’qituvchilarida pedagogik mahoratni shakllantirishning ustuvor g’oyalarini tadbiq etishdan iboratdir.
Additional file 3: of A preliminary investigation of circulating extracellular vesicles and biomarker discovery associated with treatment response in head and neck squamous cell carcinoma
Creators: name: Dorival Rodrigues-Junior
name: Tan, Soon
name: Viana, Luciano Souza
name: Carvalho, Andre
name: Lim, Sai
name: N Gopalakrishna Iyer
name: Vettore, Andre
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Figure S1 Protein-protein interaction network to specific proteins in EVs from CR patients. Predicted interactions for these proteins (n = 32) were obtained from STRING online database ( http://string-db.org ). The top five KEGG pathways observed in these proteins were pathways in cancer (red; eight proteins, p = 5.44 × 10− 6), hepatitis B (purple; five proteins, p = 0.0002), pancreatic cancer (green; four proteins, p = 0.0002), prolactin signaling pathway (yellow; four proteins, p = 0.0002) and prostate cancer (lilac; four proteins, p = 0.0004). (DOCX 39 kb)
Influence of hydrogen vacancy interactions on natural and artificial ageing of an AlMgSi alloy
Creators: name: Hachet, Guillaume
name: Sauvage, X
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The influence of hydrogen on the structural evolutions of an Al-Mg-Si alloy during natural and artificial ageing was investigated experimentally. The aim of the study was a better understanding of interactions between hydrogen and crystalline defects and especially vacancies. Experimental data demonstrate that during natural ageing in hydrogen environment, the hardening response is delayed. This is attributed to a slower recovery of excess vacancies linked to a lower mobility. To confirm and quantify the influence of hydrogen on the vacancy migration energy, artificial ageing was carried out in conditions where the vacancy concentration is constant. Hence, long-time annealing treatments were carried out to investigate the influence of hydrogen on the coarsening of rod-shaped precipitates. Using transmission electron microscopy and atom probe tomography, it was demonstrated that the precipitate volume fraction and composition are unchanged under H2 atmosphere but the coarsening kinetic is significantly reduced. This leads to a delayed softening, in good agreement with theoretical estimates. Thus, even a low concentration of hydrogen in solid solution significantly affects the mobility of alloying elements in the aluminium matrix. This is the result of hydrogen-vacancy interactions that lead to an increase of the vacancy migration energy. Based on classical coarsening theories, it was possible to demonstrate that this increase is of about 5% for a concentration of hydrogen close to the vacancy concentration.
title: Umsetzung der Grundordnung Umbenennung des Fachbereichs für Wirtschafts- und Sozialwissenschaften in Fakultät für Wirtschafts- und Sozialwissenschaften
Creators: name: :None
Publisher: name: Technische Universität Braunschweig
Year: 2005
Subjects: subject: Organisationsplan
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 355
Latoia nivosa subsp. angustifascia Hering 1928
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Limacodidae
Latoia
Latoia nivosa
Latoia nivosa angustifascia hering, 1928a

description: Latoia nivosa angustifascia Hering, 1928a
COMMON NAME(S): Slug-caterpillar moth or Cup-cocoon moth.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE)
DISTRIBUTION: Malawi, Zambia, Zimbabwe.
LOCALITY IN ZAMBIA: ‘Lusaka’, in Lusaka Province.
LARVAL HOSTPLANT(S): Unknown.
SOURCES: De Prins & De Prins, 2022.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 58, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
title: Umsetzung der Grundordnung Umbenennung des Fachbereichs für Architektur in Fakultät Architektur
Creators: name: :None
Publisher: name: Technische Universität Braunschweig
Year: 2005
Subjects: subject: Organisationsplan
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 354
Time-dependent atomic diffusion in the atmospheres of CP stars. A big step forward: introducing numerical models including a stellar mass loss
Creators: name: Alecian, G.
name: Stift, M. J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Calculating abundance stratifications in ApBp/HgMn star atmospheres, we are considering mass-loss in addition to atomic diffusion in our numerical code in order to achieve more realistic models. These numerical simulations with mass-loss solve the time dependent continuity equation for plane-parallel atmospheres; the procedure is iterated until stationary concentrations of the diffusing elements are obtained throughout a large part of the stellar atmosphere. We find that Mg stratifications in HgMn star atmospheres are particularly sensitive to the presence of a mass-loss. For main-sequence stars with $T_{\rm{eff}}\approx 12000$ K, the observed systematic mild underabundances of this element can be explained only if a mass-loss rate of around $4.2\,10^{-14}$ solar mass per year is assumed in our models. Numerical simulations also reveal that the abundance stratification of P observed in the HgMn star HD53929 may be understood if a weak horizontal magnetic field of about 75G is present in this star. However, for a better comparison of our results with observations, it will be necessary to carry out 3D modelling, especially when magnetic fields and stellar winds -- which render the atmosphere anisotropic -- are considered together.
description: 10 pages, 9 figures, MNRAS in press, accepted 2018 November 1
title: Praktikumsrichtlinien für die Studiengänge Elektrotechnik, Wirtschaftsingenieurwesen Studienrichtung Elektrotechnik, Informations-Systemtechnik
Creators: name: :None
Publisher: name: Technische Universität Braunschweig. Fakultät 8
Year: 2005
Subjects: subject: Richtlinie
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 353
Subfactors and Hecke groups
Creators: name: Glubokov, Andrey
name: Nikolaev, Igor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Operator Algebras (math.OA)
subject: Geometric Topology (math.GT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 46L37, 20H10

description: We study a relation between the Hecke groups and the index of subfactors in a von Neumann algebra. Such a problem was raised by V. F. R. Jones. We solve the problem using the notion of a cluster C*-algebra.
description: 5 pages, 1 figure
Topological Censorship and Higher Genus Black Holes
Creators: name: Galloway, G. J.
name: Schleich, K.
name: Witt, D. M.
name: Woolgar, E.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by recent interest in black holes whose asymptotic geometry approaches that of anti-de Sitter spacetime, we give a proof of topological censorship applicable to spacetimes with such asymptotic behavior. Employing a useful rephrasing of topological censorship as a property of homotopies of arbitrary loops, we then explore the consequences of topological censorship for horizon topology of black holes. We find that the genera of horizons are controlled by the genus of the space at infinity. Our results make it clear that there is no conflict between topological censorship and the non-spherical horizon topologies of locally anti-de Sitter black holes. More specifically, let D be the domain of outer communications of a boundary at infinity ``scri.'' We show that the principle of topological censorship (PTC), that every causal curve in D having endpoints on scri can be deformed to scri, holds under reasonable conditions for timelike scri, as it is known to do for a simply connected null scri. We then show that the PTC implies that the fundamental group of scri maps, via inclusion, onto the fundamental group of D, i.e., every loop in D is homotopic to a loop in scri. We use this to determine the integral homology of preferred spacelike hypersurfaces (Cauchy surfaces or analogues thereof) in the domain of outer communications of any 4-dimensional spacetime obeying PTC. From this, we establish that the sum of the genera of the cross-sections in which such a hypersurface meets black hole horizons is bounded above by the genus of the cut of infinity defined by the hypersurface. Our results generalize familiar theorems valid for asymptotically flat spacetimes requiring simple connectivity of the domain of outer communications and spherical topology for stationary and slowly evolving black holes.
description: 20 pages, Plain TeX
Solving The Travelling Salesmen Problem using HNN and HNN-SA algorithms
Creators: name: Dutta, Gyanateet
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this case study, the renowned Travelling Salesmen problem has been studied. Travelling Salesman problem is a most demanding computational problem in Computer Science. The Travelling Salesmen problem has been solved by two different ways using Hopfield Network. The main theory of the problem is to find distance and connectedness between nodes in a graph having edges between the nodes. The basic algorithm used for this problem is Djikstra's Algorithm. But till now , a number of such algorithms have evolved. Among them(some other algorithms) , are distinct and have been proved to solve the travelling salesmen problem by graph theory.
Greek Poetry in the Late Twentieth Century
Creators: name: Boukalas, Pantelis
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The paper examines the Modern Greek poetic production of the last quarter of the twentieth century. It asks first a number of methodological questions, of which the most crucial is if this analysis should focus on a poetry reviewed and studied during that period. The paper then considers the poetry under question in relation to past poetry in an attempt to discern changes of language, style, morals, form, etc., and weighs the “burden” of the seven-year dictatorship (1967-1974). It concludes by presenting “suffering” as the only property of the poet.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
Communism and Poetry
Creators: name: Gourgouris, Stathis
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: This essay poses certain theoretical questions regarding the curious (but substantially evident) phenomenon of many of twentieth-century's most experimental poets being avowed (albeit maverick) communists. The first part of the essay suggests a series of dialectical questions for further examination, built on a constitutive antagonism between the desire to control historical knowledge and the poetic daring to invent the historical horizon. The second part of the essay pursues, as a way of illustration, a comparative reading of two poems by Ritsos and Alexandrou.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
Density-Functional Theory of Quantum Freezing: Sensitivity to Liquid-State Structure and Statistics
Creators: name: Denton, A. R.
name: Nielaba, P.
name: Ashcroft, N. W.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Density-functional theory is applied to compute the ground-state energies of quantum hard-sphere solids. The modified weighted-density approximation is used to map both the Bose and the Fermi solid onto a corresponding uniform Bose liquid, assuming negligible exchange for the Fermi solid. The required liquid-state input data are obtained from a paired phonon analysis and the Feynman approximation, connecting the static structure factor and the linear response function. The Fermi liquid is treated by the Wu-Feenberg cluster expansion, which approximately accounts for the effects of antisymmetry. Liquid-solid transitions for both systems are obtained with no adjustment of input data. Limited quantitative agreement with simulation indicates a need for further improvement of the liquid-state input through practical alternatives to the Feynman approximation.
description: IOP-TeX, 21 pages + 7 figures, to appear, J. Phys.: Condens. Matter
Fantasies of the Feminine in Contemporary Greek Women Poets
Creators: name: Douka-Kabitoglou, Ekaterini
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The paper discusses the work of nine contemporary Greek women poets – Katerina Anghelaki-Rooke, Olga Broumas, Kiki Dimoula, Zoe Karelli, Maria Laina, Jenny Mastoraki, Pavlina Pamboudi, Athina Papadaki, and Andia Frantzi-within a broad feminist context as presented through French theorists like Luce Irigaray, Julia Kristeva and Helene Cixous and also American poet-critics, mainly Adrienne Rich. It explores the way in which women poets writing in Greece today receive and react to the basic issues raised by feminist thinking, such as the muteness and double bind imposed on women authors by patriarchy, the self-conception and self-expression of the woman/creator, the relation to the (misogynistic) myths and tales of tradition, the need to articulate the feminine fantasies and perception of the world. Above all, the paper traces the attempt to reject stereotypes, to retrieve women's experience of history through the revisionary telling of women's stories, and to bring the female Imaginary into the male Symbolic, standing (perilously) on the edge of a linguistic system that has systematically ignored them.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
QSOs from the variability and proper motion survey in the M3 field
Creators: name: Meusinger, H.
name: Scholz, R. -D.
name: Irwin, M.
name: Lehmann, H.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of the spectroscopical follow-up observations of QSO candidates from a combined variability and proper motion (VPM) survey in a ~10 square degrees region centered on the globular cluster M3. The search is based on a large number of digitised Schmidt plates with a time-baseline of three decades. This paper reviews the candidate selection, the follow-up spectroscopy, and general properties of the resulting QSO sample. In total, 175 QSOs and Sey1s were identified among the objects from the VPM survey, with 114 QSOs and 10 Sey1s up to the pre-estimated 90% completeness limit of the survey at B_lim~19.7. The redshift range of the QSOs is 0.4
description: 22 pages, 9 figures, accepted for publication in A&A
Searching for late-time interaction signatures in Type Ia supernovae from the Zwicky Transient Facility
Creators: name: Terwel, Jacco H.
name: Maguire, Kate
name: Dimitriadis, Georgios
name: Smith, Mat
name: Reusch, Simeon
name: Lacroix, Leander
name: Galbany, Lluís
name: Burgaz, Umut
name: Harvey, Luke
name: Schulze, Steve
name: Rigault, Mickael
name: Groom, Steven L.
name: Hale, David
name: Kasliwal, Mansi M.
name: Kim, Young-Lo
name: Purdum, Josiah
name: Rusholme, Ben
name: Sollerman, Jesper
name: Anderson, Joseph P.
name: Chen, Ting-Wan
name: Frohmaier, Christopher
name: Gromadzki, Mariusz
name: Müller-Bravo, Tomás E.
name: Nicholl, Matt
name: Srivastav, Shubham
name: Deckers, Maxime
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The nature of the progenitor systems and explosion mechanisms that give rise to Type Ia supernovae (SNe Ia) are still debated. The interaction signature of circumstellar material (CSM) being swept up by expanding ejecta can constrain the type of system from which it was ejected. Most previous studies have focused on finding CSM ejected shortly before the SN Ia explosion still residing close to the explosion site, resulting in short delay times until the interaction starts. We use a sample of 3627 SNe Ia from the Zwicky Transient Facility discovered between 2018 and 2020 and search for interaction signatures over 100 days after peak brightness. By binning the late-time light curve data to push the detection limit as deep as possible, we identify potential late-time rebrightening in 3 SNe Ia (SN 2018grt, SN 2019dlf, SN 2020tfc). The late-time detections occur between 550 and 1450 d after peak brightness, have mean absolute $r$-band magnitudes of -16.4 to -16.8 mag and last up to a few hundred days, significantly brighter than the late-time CSM interaction discovered in the prototype SN 2015cp. The late-time detections all occur within 0.8 kpc of the host nucleus and are not easily explained by nuclear activity, another transient at a similar sky position, or data quality issues. This suggests environment or specific progenitor characteristics playing a role in producing potential CSM signatures in these SNe Ia. By simulating the ZTF survey we estimate that <0.5 per cent of normal SNe Ia display late-time strong H $α$-dominated CSM interaction. This is equivalent to an absolute rate of $8_{-4}^{+20}$ to $54_{-26}^{+91}$ Gpc$^{-3}$ yr$^{-1}$ assuming a constant SN Ia rate of $2.4\times10^{-5}$ Mpc$^{-3}$ yr$^{-1}$ for $z \leq 0.1$. Weaker interaction signatures, more similar to the strength seen in SN 2015cp, could be more common but are difficult to constrain with our survey depth.
description: 24 pages, 13 figures, 6 tables, A&A accepted
Greek Poetry Elsewhere
Creators: name: Van Dyck, Karen
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: Experimental texts by contemporary women writers such as Olga Broumas, Kay Cicellis, Diamanda Galas, Eleni Sikelianos, Thalia Selz, Irini Spanidou and Soti Triantafillou produced between Greece and the United States foreground issues of multilingualism and translation. These texts written in a hybrid language of Greek and English, invite us to think about the material specificity of different languages. Rather than treating linguistic translation simply as a metaphor for cultural translation, these experimental texts challenge receiνed notions about immigration and other forms of physical displacement by making us look at these experiences through the linguistic thicket of translation. For these writers, traνel between Greece and America, whether real or imagined, is a linguistic enterprise. It describes the particular way the Greek language inhabits their use of English - whether it is the transliterated Greek νowel sounds in Broumas's poetry or the surreal-sounding literal translation of Greek sayings in Spanidou's noνel God's Snake. What their writing suggests is that in an age when moνement between places is only getting easier, the difficulty of linguistic translation can keep us attentiνe to globalization's imperfect balance of power.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
Drowning in White Ink: The Feminine in the Poetry of Katerina Anghelaki-Rooke and Eleni Vakalo
Creators: name: Sakelliou-Schultz, Liana
name: Dokou, Christina
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The influence exerted on contemporary women poets (as women and as artists), by the patriarchal traditions of the canon is examined here through the comparative analysis of selected works by Anghelaki-Rooke and Vakalo. The particularities of the Greek cultural context are, of course, accounted for; however, the investigation focuses mainly on tracing and analysing within the poems elements which contemporary feminist theory would identify as constituents of écriture féminine. The term, a product of the “French” feminism of Helene Cixous, Luce Irigaray and Julia Κristeva, denotes textual markers such as body-centered thematics; an experimental attitude towards language, form and meaning; use of circular time; references to the bonds of motherhood; a fluidity of identity; and an exploration of feminine sensibility – all of which not only appear in, but essentially characterize the work of the two Greek women poets. If, however, the exercise of écriture féminine is an act of pure feminist empowerment for the French theoreticians and authors, the undercurrents of the traditionally patriarchal Greek society, as felt in the poetry of Anghelaki-Rooke and Vakalo, do not allow for a similar, wholy positive outcome. Το the extent, then, that the personal poetic experience can be said to reflect the tendencies and the questions of an entire society, the conclusion drawn from these two paradigms is that the use of “white ink” - the milk of motherhood, which Cixous sees as a fundamental means of expression in feminine writing - is, for the Greek 20th century literary canon, as ambiguous and obstacle ridden as it is inevitable and vital.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
An Untimely Poetry: The Call Of Haris Vlavianos' Angel of History
Creators: name: Karavanta, Assimina
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The paper explores Ηaris Vlavianos' poetry, with a particular focus on The Angel of History, as an “untimely poetry” that is blessed by the superfluous, the marginal, the footnote and the everyday and seeks, through the banality and often grim penumbra of the superfluous, the luminous excess that the grand narratives of modern Greek poetry have often sacrificed at the altar of the necessary, that is, the modern. Vlavianos' poetry completely and utterly demythologizes the modern and unconceals the nightmares of its dreams by speaking the silence of the margin in scenes of death and life, and visions of truth and darkness, without restoring them in a picture that renders them sensible and, thus, comprehensible. Hence, it is an “untimely poetry” for it acts counter to our time and on our time hopefully for the benefit of telling and retelling its stories, visions and scenes with the utmost and most painstaking sincerity. Its effort is to see through the curtain of the stage and beyond the “masquerade” of the history that veils the untrue to project it as the essential, and distorts the true to reduce it to the place of the footnote of the historical text.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
On the Asymptotic Behaviour of Cosmological Models in Scalar-Tensor Theories of Gravity
Creators: name: Billyard, Andrew
name: Coley, Alan A
name: Ibanez, Jesus
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the qualitative properties of cosmological models in scalar-tensor theories of gravity by exploiting the formal equivalence of these theories with general relativity minimally coupled to a scalar field under a conformal transformation and field redefinition. In particular, we investigate the asymptotic behaviour of spatially homogeneous cosmological models in a class of scalar-tensor theories which are conformally equivalent to general relativistic Bianchi cosmologies with a scalar field and an exponential potential whose qualitative features have been studied previously. Particular attention is focussed on those scalar-tensor theory cosmological models, which are shown to be self-similar, that correspond to general relativistic models that play an important rôle in describing the asymptotic behaviour of more general models (e.g., those cosmological models that act as early-time and late-time attractors).
description: 22 pages, submitted to Phys Rev D
The Writer as Poet-Creator in Yiorgos Cheimonas' Work
Creators: name: Chatziioannidou, Sophia
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The article traces the lines in Yiorgos Cheimonas' work that sketch the portrait of a creator. What constitutes creation, in the sense of writing, what is the ambition of the subject that comes to speak poetically, that is to utter a speech so personal as universal? In a type of writing that faces literature, both poetry and prose, in a unique way it searches through the limits of writing and speech, the responsibility, the power and also the freedom of the creator. Through a very modern thinking about speech, as Cheimonas' is, very traditional concepts in the theological register, such as poiein, are examined.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)
Vacuum decay and bubble nucleation in $f(R)$ gravity
Creators: name: Salehian, Borna
name: Firouzjahi, Hassan
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we study vacuum decay and bubble nucleation in models of $f(R)$ higher curvature gravity. Building upon the analysis of Coleman-De Luccia (CDL), we present the formalism to calculate the Euclidean action and the bounce solution for a general $f(R)$ gravity in the thin wall approximation. We calculate the size of the nucleated bubble and the decay exponent for the Starobinsky model and its higher power extensions. We have shown that in the Starobinsky model with a typical potential the nucleated bubble has a larger size in comparison to the CDL bubble and with a lower tunneling rate. However, for higher power extension of the Starobinsky model the size of the bubble and the tunneling exponent can be larger or smaller than the CDL bubble depending on the model parameters. As a counterintuitive example, we have shown that a bubble with a larger size than the CDL bubble but with a higher nucleation rate can be formed in $f(R)$ gravity.
Excitation of the odd-parity quasi-normal modes of compact objects
Creators: name: Andrade, Zeferino
name: Price, Richard H.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The gravitational radiation generated by a particle in a close unbounded orbit around a neutron star is computed as a means to study the importance of the $w$ modes of the neutron star. For simplicity, attention is restricted to odd parity (``axial'') modes which do not couple to the neutron star's fluid modes. We find that for realistic neutron star models, particles in unbounded orbits only weakly excite the $w$ modes; we conjecture that this is also the case for astrophysically interesting sources of neutron star perturbations. We also find that for cases in which there is significant excitation of quadrupole $w$ modes, there is comparable excitation of higher multipole modes.
description: 18 pages, 21 figures, submitted to Phys. Rev. D
title: Umsetzung der Grundordnung Umbenennung des Fachbereichs für Elektrotechnik und Informationstechnik in Fakultät für Elektrotechnik und Informationstechnik
Creators: name: :None
Publisher: name: Technische Universität Braunschweig
Year: 2005
Subjects: subject: Organisationsplan
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 352
Towards adaptive state consistency in distributed SDN control plane
Creators: name: Sakic, Ermin
name: Sardis, Fragkiskos
name: Guck, Jochen W.
name: Kellerer, Wolfgang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: State synchronisation in clustered Software Defined Networking controller deployments ensures that all instances of the controller have the same state information in order to provide redundancy. Current implementations of controllers use a strong consistency model, where configuration changes must be synchronised across a number of instances before they are applied on the network infrastructure. For large deployments, this blocking process increases the delay of state synchronisation across cluster members and consequently has a detrimental effect on network operations that require rapid response, such as fast failover and Quality of Service applications. In this paper, we introduce an adaptive consistency model for SDN Controllers that employs concepts of eventual consistency models along with a novel `cost-based' approach where strict synchronisation is employed for critical operations that affect a large portion of the network resources while less critical changes are periodically propagated across cluster nodes. We use simulation to evaluate our model and demonstrate the potential gains in performance.
description: 7 pages
Writing Wrongs, (Re)Righting (Hi)story?: "Orthotita" and "Ortho-graphia" in Thanassis Valtinos's Orthokosta
Creators: name: Calotychos, Vangelis
Publisher: name: Gramma: Journal of Theory and Criticism
Year: 2000

description: The debates over postmodernism have prompted some historians to condemn the way in which literary and cultural critics flirt with facts (or “facts”, to be more precise). It is rarely the case that literary critics turn on historians for shortcomings in their reading literature; even when, haughtiness aside, this approach might prove constructive. One such instance might be in undertaking a critical appreciation of the response of leftist historians to the Greek novelist Thanassis Valtinos's Orthokosta of 1994. The novel, which considers events related to the Greek Civil War, provoked the most heated cultural debate in Greece, in the summer after its publication. This article focuses on the relation of Valtinos's challenging novel, and the ensuing debate, to the ongoing textual and ideological confrontation with that war. It places the issue in the equally anxiogenic field of historiography and literature, and considers how one reads and writes correctly about matters that defy such ambitions. The article maintains that a close reading of the novel's paratexts will show how the debate over these issues had already been staged, and theorized, in the book itself.
description: Gramma: Journal of Theory and Criticism, Vol 8 (2000): Modern Greek Poetry on the Edge (of the century, of history, of language)