cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evaluating Static Analysis Alerts with LLMs
Creators: name: Klieber, William
name: Flynn, Lori
Publisher: name: Carnegie Mellon University
Year: 2024
Subjects: Software Engineering

description: For safety-critical systems in areas such as defense and medical devices, software assurance is crucial. Analysts can use static analysis tools to evaluate source code without running it, allowing them to identify potential vulnerabilities. Despite their usefulness, the current generation of heuristic static analysis tools require significant manual effort and are prone to producing both false positives (spurious warnings) and false negatives (missed warnings). Recent research from the SEI estimates that these tools can identify up to one candidate error (“weakness”) every three lines of code, and engineers often choose to prioritize fixing the most common and severe errors. However, less common errors can still lead to critical vulnerabilities. For example, a "flooding" attack on a network-based service can overwhelm a target with requests, causing the service to crash. However, neither of the related weaknesses ("improper resource shutdown or release" or "allocation of resources without limits or throttling") is on the 2023 Top 25 Dangerous CWEs list, the Known Exploited Vulnerabilities (KEV) Top 10 list, or the Stubborn Top 25 CWE 2019-23 list. In our research, large language models (LLMs) show promising initial results in adjudicating static analysis alerts and providing rationales for the adjudication, offering possibilities for better vulnerability detection.  In this blog post, we discuss our initial experiments using GPT-4 to evaluate static analysis alerts. This post also explores the limitations of using LLMs in static analysis alert evaluation and opportunities for collaborating with us on future work.
Higher minors and Van Kampen's obstruction
Creators: name: Nevo, Eran
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 05C83, 55S35

description: We generalize the notion of graph minors to all (finite) simplicial complexes. For every two simplicial complexes H and K and every nonnegative integer m, we prove that if H is a minor of K then the non vanishing of Van Kampen's obstruction in dimension m (a characteristic class indicating non embeddability in the (m-1)-sphere) for H implies its non vanishing for K. As a corollary, based on results by Van Kampen and Flores, if K has the d-skeleton of the (2d+2)-simplex as a minor, then K is not embeddable in the 2d-sphere. We answer affirmatively a problem asked by Dey et. al. concerning topology-preserving edge contractions, and conclude from it the validity of the generalized lower bound inequalities for a special class of triangulated spheres.
description: Revised: 16 pages, 1 figure. A section on the obstruction with integer coefficients was added. In the last section, the proof of the first example (Example 6.1) was corrected, and the problem at its end was solved (Proposition 6.5). v3: Journal version, a relation between variants of the link condition, suggested by a referee, was added; see (1) and (2)
Mean-field optimal control for biological pattern formation
Creators: name: Burger, Martin
name: Kreusser, Lisa Maria
name: Totzeck, Claudia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We propose a mean-field optimal control problem for the parameter identification of a given pattern. The cost functional is based on the Wasserstein distance between the probability measures of the modeled and the desired patterns. The first-order optimality conditions corresponding to the optimal control problem are derived using a Lagrangian approach on the mean-field level. Based on these conditions we propose a gradient descent method to identify relevant parameters such as angle of rotation and force scaling which may be spatially inhomogeneous. We discretize the first-order optimality conditions in order to employ the algorithm on the particle level. Moreover, we prove a rate for the convergence of the controls as the number of particles used for the discretization tends to infinity. Numerical results for the spatially homogeneous case demonstrate the feasibility of the approach.
First-Year Spectroscopy for the SDSS-II Supernova Survey
Creators: name: Zheng, Chen
name: Romani, Roger W.
name: Sako, Masao
name: Marriner, John
name: Bassett, Bruce
name: Becker, Andrew
name: Choi, Changsu
name: Cinabro, David
name: DeJongh, Fritz
name: Depoy, Darren L.
name: Dilday, Ben
name: Doi, Mamoru
name: Frieman, Joshua A.
name: Garnavich, Peter M.
name: Hogan, Craig J.
name: Holtzman, Jon
name: Im, Myungshin
name: Jha, Saurabh
name: Kessler, Richard
name: Konishi, Kohki
name: Lampeitl, Hubert
name: Marshall, Jennifer L.
name: McGinnis, David
name: Miknaitis, Gajus
name: Nichol, Robert C.
name: Prieto, Jose Luis
name: Riess, Adam G.
name: Richmond, Michael W.
name: Schneider, Donald P.
name: Smith, Mathew
name: Takanashi, Naohiro
name: Tokita, Kouichi
name: van der Heyden, Kurt
name: Yasuda, Naoki
name: Assef, Roberto J.
name: Barentine, John
name: Bender, Ralf
name: Blandford, Roger D.
name: Bremer, Malcolm
name: Brewington, Howard
name: Collins, Chris A.
name: Crotts, Arlin
name: Dembicky, Jack
name: Eastman, Jason
name: Edge, Alastair
name: Elson, Ed
name: Eyler, Michael E.
name: Filippenko, Alexei V.
name: Foley, Ryan J.
name: Frank, Stephan
name: Goobar, Ariel
name: Harvanek, Michael
name: Hopp, Ulrich
name: Ihara, Yutaka
name: Kahn, Steven
name: Ketzeback, William
name: Kleinman, Scott J.
name: Kollatschny, Wolfram
name: Krzesiński, Jurek
name: Leloudas, Giorgos
name: Long, Daniel C.
name: Lucey, John
name: Malanushenko, Elena
name: Malanushenko, Viktor
name: McMillan, Russet J.
name: Morgan, Christopher W.
name: Morokuma, Tomoki
name: Nitta, Atsuko
name: Ostman, Linda
name: Pan, Kaike
name: Romer, A. Kathy
name: Saurage, Gabrelle
name: Schlesinger, Katie
name: Snedden, Stephanie A.
name: Sollerman, Jesper
name: Stritzinger, Maximilian
name: Watson, Linda C.
name: Watters, Shannon
name: Wheeler, J. Craig
name: York, Donald
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents spectroscopy of supernovae discovered in the first season of the Sloan Digital Sky Survey-II Supernova Survey. This program searches for and measures multi-band light curves of supernovae in the redshift range z = 0.05 - 0.4, complementing existing surveys at lower and higher redshifts. Our goal is to better characterize the supernova population, with a particular focus on SNe Ia, improving their utility as cosmological distance indicators and as probes of dark energy. Our supernova spectroscopy program features rapid-response observations using telescopes of a range of apertures, and provides confirmation of the supernova and host-galaxy types as well as precise redshifts. We describe here the target identification and prioritization, data reduction, redshift measurement, and classification of 129 SNe Ia, 16 spectroscopically probable SNe Ia, 7 SNe Ib/c, and 11 SNe II from the first season. We also describe our efforts to measure and remove the substantial host galaxy contamination existing in the majority of our SN spectra.
description: Accepted for publication in The Astronomical Journal(47pages, 9 figures)
Enchelys tumida Foissner 2016
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Gymnostomatea
Haptorida
Enchelyidae
Enchelys
Enchelys tumida

description: Enchelys tumida Foissner 2016
Distribution. VENEZUELA: North border of the Henri Pittier National Park, surroundings of the village of Choroni (Foissner 2016), (Ts).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 15, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Reversed Photoeffect in Transparent Graphene Nanocapacitors
Creators: name: Belkin, A.
name: Ilin, E.
name: Burkova, I.
name: Bezryadin, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electronic properties of ultrathin dielectric films consistently attract much attention since they play important roles in various electronic devices, such as field effect transistors and memory elements. Insulating properties of the gate oxide in transistors represent the key factor limiting Moore's law. The dielectric strength of the insulating film limits how much energy can be stored in nanocapacitors. The origin of the electric current in the nanometer-scale insulating barrier remains unexplained. Here we present an optically transparent Al-Al2O3-graphene nanocapacitor suitable for studying electronic transport in calibrated nanoscale dielectric films under high electric fields and with light exposure. The controllable flow of photons provides an additional powerful probe helping to resolve the puzzle of the electric conductivity in these high-quality insulating films. The dielectric alumina, Al2O3, is deposited by atomic layer deposition technology. With this device we observe a photon-assisted field emission effect, in which the effective barrier height is reduced by a quantity equal to the photon energy. Our main finding is a reversed photoeffect. Namely, at sufficiently high bias voltages the current through the dielectric film decreases as the light intensity increases. Moreover, higher photon energies correlate with stronger decreases of the current. To explain this reversed photoeffect, we present a qualitative model based on a conjecture that electrons leak into the dielectric and form charged sandpile-like branching patterns, which facilitate transport, and which can be dispersed by light.
description: 14 pages, 8 figures
Gaia GraL: Gaia DR2 Gravitational Lens Systems. VI. Spectroscopic Confirmation and Modeling of Quadruply-Imaged Lensed Quasars
Creators: name: Stern, D.
name: Djorgovski, S. G.
name: Krone-Martins, A.
name: Sluse, D.
name: Delchambre, L.
name: Ducourant, C.
name: Teixeira, R.
name: Surdej, J.
name: Boehm, C.
name: Brok, J. den
name: Dobie, D.
name: Drake, A.
name: Galluccio, L.
name: Graham, M. J.
name: Jalan, P.
name: Klark, J.
name: LeCampion, J. F.
name: Mahabal, A.
name: Mignard, F.
name: Murphy, T.
name: Nierenberg, A.
name: Scarano, S.
name: Simon, J.
name: Slezak, E.
name: Spindola-Duarte, C.
name: Wambsganss, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Combining the exquisite angular resolution of Gaia with optical light curves and WISE photometry, the Gaia Gravitational Lenses group (GraL) uses machine learning techniques to identify candidate strongly lensed quasars, and has confirmed over two dozen new strongly lensed quasars from the Gaia Data Release 2. This paper reports on the 12 quadruply-imaged quasars identified by this effort to date, which is approximately a 20% increase in the total number of confirmed quadruply-imaged quasars. We discuss the candidate selection, spectroscopic follow-up, and lens modeling. We also report our spectroscopic failures as an aid for future investigations.
description: 18 pages, 8 figures; submitted to ApJ
Spin-transfer in an open ferromagnetic layer: from negative damping to effective temperature
Creators: name: Wegrowe, J. -E.
name: Ciornei, C.
name: Drouhin, H. -J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-transfer is a typical spintronics effect that allows a ferromagnetic layer to be switched by spin-injection. Most of the experimental results about spin transfer are described on the basis of the Landau-Lifshitz-Gilbert equation of the magnetization, in which additional current-dependent damping factors are added, and can be positive or negative. The origin of the damping can be investigated further by performing stochastic experiments, like one shot relaxation experiments under spin-injection in the activation regime of the magnetization. In this regime, the Néel-Brown activation law is observed which leads to the introduction of a current-dependent effective temperature. In order to justify the introduction of these counterintuitive parameters (effective temperature and negative damping), a detailed thermokinetic analysis of the different sub-systems involved is performed. We propose a thermokinetic description of the different forms of energy exchanged between the electric and the ferromagnetic sub-systems at a Normal/Ferromagnetic junction. The corresponding Fokker Planck equations, including relaxations, are derived. The damping coefficients are studied in terms of Onsager-Casimir transport coefficients, with the help of the reciprocity relations. The effective temperature is deduced in the activation regime.
description: 65 pages, 10 figures
Der Dialog zwischen der römisch-katholischen Kirche und den Alt-Katholischen Kirchen der Utrechter Union
Creators: name: Berlis, Angela
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 60 Nr. 4 (2011): Ökumenische Rundschau, Band 60, Heft 4
title: The Shape-Shifting Territory: Colonialism, Shamanism and A’I Kofán place-making in the Amazonian Piedmont, Colombia
Creators: name: Carrizosa, Joaquin
Publisher: name: University of Kent
Year: 2015

description: This research attempts to bring into a serious dialogue critical ethnography and postcolonial historiography to analyse the Kofan indigenous peoples of the Colombian amazon frontier and the transformations of their socio-spatial practices and cosmographies in a long durée perspective. The thesis is chiefly focused on problematizing "indigenous territory", the notion that is taken for granted by a diverse range of actors, including the Colombian state, indigenous activist, as well as analysts. The ethnographic exploration presented unpacks the ways in which the Kofan people constructs and perceives the territory as complex and 'shape-shifting' in a context of historical violence, colonization, missionization, cocaine production, sorcery and militarization.
Mode-coupling theory for the slow collective dynamics of fluids adsorbed in disordered porous media
Creators: name: Krakoviack, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We derive a mode-coupling theory for the slow dynamics of fluids confined in disordered porous media represented by spherical particles randomly placed in space. Its equations display the usual nonlinear structure met in this theoretical framework, except for a linear contribution to the memory kernel which adds to the usual quadratic term. The coupling coefficients involve structural quantities which are specific of fluids evolving in random environments and have expressions which are consistent with those found in related problems. Numerical solutions for two simple models with pure hard core interactions lead to the prediction of a variety of glass transition scenarios, which are either continuous or discontinuous and include the possibility of higher-order singularities and glass-glass transitions. The main features of the dynamics in the two most generic cases are reviewed and illustrated with detailed computations. Moreover, a reentry phenomenon is predicted in the low fluid-high matrix density regime and is interpreted as the signature of a decorrelation mechanism by fluid-fluid collisions competing with the localization effect of the solid matrix.
description: 19 pages, 8 figures, accepted for publication in Phys. Rev. E
Lipoprotein lipase deficiency in a colony of domestic cats
Creators: name: Ginzinger, David Gerard
Publisher: name: University of British Columbia
Year: 2009

description: I have investigated the molecular basis of lipoprotein lipase deficiency (LPL) in a colony of domestic cats. Members of this cat colony suffer from chylomicronemia and share many of the same phenotypic features as humans with lipoprotein lipase deficiency. Biochemical analysis revealed that these cats have defective LPL catalytic activity suggesting a molecular defect in the LPL gene. Molecular analysis revealed a point mutation resulting in a substitution of arginine for glycine at amino acid residue 412. Segregation analysis, in vitro mutagenesis and expression studies, all showed that this DNA change is the underlying cause of LPL deficiency in this cat colony. Cats homozygous for this mutation have reduced body mass, growth rates and increased stillbirth rates. Body composition analysis showed a reduction of body fat in the LPL deficient cats. Homozygote cats born to a homozygote queen are more profoundly affected than homozygote cats born to a heterozygote queen. The lack of free fatty acids, as a result of lipoprotein lipase deficiency, may limit the maturation of pre-adipocytes. However, the mechanism by which LPL affects body composition is not certain. LPL deficient cats, have an elevation of serum triglycerides even when maintained on a low fat diet. They also have significant elevations of VLDL-triglycerides, VLDL-cholesterol and decreased LDL-cholesterol. Particle composition analysis indicates that normal cats have a lipid particle composition similar to that of humans with respect to VLDL and LDL. An oral fat tolerance study indicates that homozygotes have a marked reduction in the clearance of plasma triglycerides and heterozygotes have an intermediate clearance rate. To study the role of LPL in atherogenesis, normal cats were fed a cholesterol-enriched diet. The vascular tree and organs were evaluated by experienced pathologists to assess the severity of atherosclerotic disease. Serum lipid measurements and vessel wall lesion assessment were elevated in the cholesterol-fed cats, compared to the cats on a normal diet. The lipid profile was correlated with vessel wall measurements. This study provides the basis for evaluating the susceptibility of the LPL-deficient cats to diet induced atherosclerosis.
Gli studi provenzali nel percorso critico di Cesare De Lollis
Creators: name: Stefanelli, Diego
Publisher: name: Università degli Studi di Milano
Year: 2015
Subjects: De Lollis; canzonieri provenzali; Sordello; Guittone; Dante; stilnovo

description: Riassunto. L’intervento indaga l’attività di provenzalista di Cesare De Lollis. Sulla scia dell’opera del maestro Ernesto Monaci essa si concentrò inizialmente sull’edizione di codici provenzali e sullo studio dei primordi della provenzalistica nell’umanesimo italiano. Seguì l’edizione dell’opera di Sordello (1896) che innescò un’aspra polemica con Francesco Torraca, da collocarsi nel contesto della querelle tra critica estetica ed erudita. In seguito, la letteratura dei trovatori fu studiata da De Lollis nel suo rapporto con quella italiana. Ripercorrendo i suoi principali interventi di materia provenzale posteriori all’edizione di Sordello, si dimostra come proprio dal confronto tra le due letterature De Lollis individuò una  linea (che dagli ultimi provenzali arrivava fino a Dante, passando per gli stilnovisti e Guittone) caratterizzata dal primato della forma. Tale linea fu fondamentale per l’elaborazione di una delle idee forti della critica dello studioso, la dialettica tra tradizione letteraria codificata e margini di libertà espressiva degli autori in essa operanti, che sarà alla base dei Saggi sulla forma poetica italiana dell’Ottocento.

Abstract. The article focuses on Cesare De Lollis’ studies on Occitan Litterature. At first, following Ernesto Monaci’s example, he worked on the editions of Occitan codes and he studied the beginnings of Occitan philology during the Italian Umanesimo. In 1896 he published the critical edition of Sordello, entering into debate with Francesco Torraca: this debate has to be set in the context of the querelle between critica estetica e critica erudita, that was very strong in Italy at the end of XIX century. After the Sordello’s edition, De Lollis studied the relationship between Occitan and Italian Litterature and he identified a poetic tradition (the last troubadours, Guittone, the stilnovisti, Dante), characterized by the importance of the forma. He focused also on the dialectic between a literary tradition and the freedom of the poet as individual, that was one of the fundamental principles of De Lollis’ best known work, the Saggi sulla forma poetica italiana dell’Ottocento).
description: Carte romanze, Vol 3, No 2 (2015)
Recensione a Marco Petoletti (a c. di), Dante e la sua eredità a Ravenna nel Trecento, Ravenna, Longo, 2015, 253 pp. («Memoria del tempo», 45)
Creators: name: Cura Curà, Giulio
Publisher: name: Università degli Studi di Milano
Year: 2015
Subjects: Dante Alighieri; Ravenna; Preumanesimo

description: Carte romanze, Vol 3, No 2 (2015)
Überlegungen zur Realisierung weiterer Schritte auf dem Weg zur sichtbaren Kirchengemeinschaft von Alt-Katholischer Kirche in Deutschland und Vereinigter Evangelisch-Lutherischer Kirche Deutschlands
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 60 Nr. 4 (2011): Ökumenische Rundschau, Band 60, Heft 4
Entanglement and Density Matrix of a Block of Spins in AKLT Model
Creators: name: Xu, Ying
name: Katsura, Hosho
name: Hirano, Takaaki
name: Korepin, Vladimir E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study a 1-dimensional AKLT spin chain, consisting of spins $S$ in the bulk and $S/2$ at both ends. The unique ground state of this AKLT model is described by the Valence-Bond-Solid (VBS) state. We investigate the density matrix of a contiguous block of bulk spins in this ground state. It is shown that the density matrix is a projector onto a subspace of dimension $(S+1)^{2}$. This subspace is described by non-zero eigenvalues and corresponding eigenvectors of the density matrix. We prove that for large block the von Neumann entropy coincides with Renyi entropy and is equal to $\ln(S+1)^{2}$.
description: Revised version, typos corrected, references added, 31 pages
Slow dynamics in critical ferromagnetic vector models relaxing from a magnetized initial state
Creators: name: Calabrese, Pasquale
name: Gambassi, Andrea
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Within the universality class of ferromagnetic vector models with O(n) symmetry and purely dissipative dynamics, we study the non-equilibrium critical relaxation from a magnetized initial state. Transverse correlation and response functions are exactly computed for Gaussian fluctuations and in the limit of infinite number n of components of the order parameter. We find that the fluctuation-dissipation ratios (FDRs) for longitudinal and transverse modes differ already at the Gaussian level. In these two exactly solvable cases we completely describe the crossover from the short-time to the long-time behavior, corresponding to a disordered and a magnetized initial condition, respectively. The effects of non-Gaussian fluctuations on longitudinal and transverse quantities are calculated in the first order in the epsilon-expansion and reliable three-dimensional estimates of the two FDRs are obtained.
description: 41 pages, 9 figures
The essence of student-teacher connection in the student-teacher relationship in clinical nursing education
Creators: name: Gillespie, Christine Mary
Publisher: name: University of British Columbia
Year: 2009

description: The trend toward humanistic nursing education has called for a transformed student-teacher relationship that fosters learning and growth of the teacher and the student. Although such a relationship has been purported to form the basis for student-teacher connection, there is an absence of research exploring student-teacher connection. The purpose of this study was to explore and describe undergraduate nursing students' experiences of student-teacher connection and the influence of student-teacher connection on the students' clinical learning experiences. The qualitative research method of interpretive description guided the study. Unstructured interviews and a focus group were used to collect data from eight senior and junior undergraduate nursing students. Data were analyzed using the process of constant comparative analysis. Analysis revealed four interrelated major categories that form a description of the students' experience of student-teacher connection: nature of connection, formation of connection, processes of connection, and outcomes of connection. The findings indicate that student-teacher connection is a positive influence on students' clinical learning experiences and their socialization as professional nurses. As well, connection has a value in and of itself that arises from the qualities of caring, knowing, trusting, respecting, and mutuality that are inherent in the connected student-teacher relationship. The connected clinical teacher is a positive influence on students' learning experiences. From a basis of compassionate competence and commitment to understanding students as whole persons, the connected CNT works with students in their learning experiences as a helper, advocate and coach, and supports their learning in a variety of ways. Within the connected relationship students are able to focus on learning, are highly motivated and enjoy their learning. Further, students are able to synthesize nursing knowledge and begin to understand and integrate the ways of knowing, being and doing that comprise the art and science of nursing. The formation of student-teacher connection is influenced by factors related to the student and teacher as persons, learner and educator, and nurses, as well as the "fit" between the two individuals in the relationship. Further, several processes, including mutual knowing, trust and respect, are essential to the development of a connected student-teacher relationship.
Letter from J. E. [John Edgar] McAllister to Mr. [James] Goldie, July 15, 1916
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to Mr. [James] Goldie from J. E. [John Edgar] McAllister, dated July 15, 1916, regarding business and Bellevue.
Pattern-Equivariant Cohomology with Integer Coefficients
Creators: name: Sadun, Lorenzo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37B50, 52C23, 54F65, 37C85

description: We relate Kellendonk and Putnam's pattern-equivariant (PE) cohomology to the inverse-limit structure of a tiling space. This gives a version of PE cohomology with integer coefficients, or with coefficients in any Abelian group. It also provides an easy proof of Kellendonk and Putnam's original theorem relating PE cohomology to the Cech cohomology of the tiling space. The inverse-limit structure also allows for the construction of a new non-Abelian invariant, the PE representation variety.
description: 8 pages, LaTeX, no figures
title: Parametrisierte Generierung diverser Planeten als Spielwelten für ein interplanetares Aufbaustrategiespiel
Creators: name: Baier, Sebastian
Publisher: name: Technische Hochschule Brandenburg
Year: 2021
Subjects: subject: 006 Spezielle Computerverfahren

description: Explorational video games and video game genres like Rogle-Likes depend heavily on the presence of an interesting and exciting game world and high replayability. This can be achieved by a high amount of content generated by procedural generation. Space themed games in particular usually lack game worlds with visual and gameplay diversity. This work focuses on the generation of diverse planets as game worlds for an interplanetary building strategy PC game. Therefore, a generator was developed within the Unity game engine to generate pseudo random planet models. Classic and modern approaches to procedural content generation were evaluated and compared in order to assess their suitability for the implementation of the generator. The generated models utilize a data structure that allows for changes in the model based on player interaction. The resulting planets differ in size, biomes and surface structure. The planet's basic sphere geometry is derived from a subdivided icosphere. Using a voronoi diagram, its surface is divided into regions representing biomes, continents and oceans. A basic simulation of continental plates is used to determine mountain and canyon locations. These are formed by nested noise functions and domain warping creating a height field. The planet surface consists of multiple material layers represented by data.
Continuous-time auxiliary field Monte Carlo for quantum impurity models
Creators: name: Gull, Emanuel
name: Werner, Philipp
name: Parcollet, Olivier
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a continuous-time Monte Carlo method for quantum impurity models, which combines a weak-coupling expansion with an auxiliary-field decomposition. The method is considerably more efficient than Hirsch-Fye and free of time discretization errors, and is particularly useful as impurity solver in large cluster dynamical mean field theory (DMFT) calculations.
description: 6 pages, 5 figures
On the Radial and Longitudinal Variation of a Magnetic Cloud: ACE, Wind, ARTEMIS and Juno Observations
Creators: name: Davies, E. E.
name: Forsyth, R. J.
name: Good, S. W.
name: Kilpua, E. K. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present observations of the same magnetic cloud made near Earth by the Advance Composition Explorer (ACE), Wind, and the Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS) mission comprising the Time History of Events and Macroscale Interactions during Substorms (THEMIS) B and THEMIS C spacecraft, and later by Juno at a distance of 1.2 AU. The spacecraft were close to radial alignment throughout the event, with a longitudinal separation of $3.6^{\circ}$ between Juno and the spacecraft near Earth. The magnetic cloud likely originated from a filament eruption on 22 October 2011 at 00:05 UT, and caused a strong geomagnetic storm at Earth commencing on 24 October. Observations of the magnetic cloud at each spacecraft have been analysed using Minimum Variance Analysis and two flux rope fitting models, Lundquist and Gold-Hoyle, to give the orientation of the flux rope axis. We explore the effect different trailing edge boundaries have on the results of each analysis method, and find a clear difference between the orientations of the flux rope axis at the near-Earth spacecraft and Juno, independent of the analysis method. The axial magnetic field strength and the radial width of the flux rope are calculated using both observations and fitting parameters and their relationship with heliocentric distance is investigated. Differences in results between the near-Earth spacecraft and Juno are attributed not only to the radial separation, but to the small longitudinal separation which resulted in a surprisingly large difference in the in situ observations between the spacecraft. This case study demonstrates the utility of Juno cruise data as a new opportunity to study magnetic clouds beyond 1 AU, and the need for caution in future radial alignment studies.
COMPARATIVE STUDY OF ENGLISH AND UZBEK FORMAL SPEECH ETIQUETTE
Creators: name: Kambarova, Saida
Publisher: name: Zenodo
Year: 2024

description: This article discusses the role of language in our lives and its importance as the main means of communication. It also briefly covers the history of language learning and its structure, as well as explores one of the current topics – the comparative study of languages of completely different cultures. In recent years, world communities have begun to pay special attention to the speech activities of different cultures, peoples and nationalities. The following aspects will be considered:

- Formal greetings;

- Formulas of politeness.
Codimension one foliations calibrated by non-degenerate closed 2-forms
Creators: name: Torres, D. Martinez
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: A class of codimension one foliations has been recently introduced by imposing a natural compatibility condition with a closed maximally non-degenerate 2-form. In this paper we study for such foliations the information captured by a Donaldson type submanifold. In particular we deduce that their leaf spaces are homeomorphic to leaf spaces of 3-dimensional taut foliations. We also introduce surgery constructions to show that this class of foliations is broad enough. Our techniques come mainly from symplectic geometry.
description: Title changed. Abstract expanded. Introduction rewritten. Four figures added. Sections 4.3 and 5 removed. Bibliography updated. Journal reference added
Investigating new forms of gravity-matter couplings in the gravitational field equations
Creators: name: Bini, Donato
name: Esposito, Giampiero
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper proposes a toy model where, in the Einstein equations, the right-hand side is modified by the addition of a term proportional to the symmetrized partial contraction of the Ricci tensor with the energy-momentum tensor, while the left-hand side remains equal to the Einstein tensor. Bearing in mind the existence of a natural length scale given by the Planck length, dimensional analysis shows that such a term yields a correction linear in h to the classical term, that is instead just proportional to the energy-momentum tensor. One then obtains an effective energy-momentum tensor that consists of three contributions: pure energy part, mechanical stress and thermal part. The pure energy part has the appropriate property for dealing with the dark sector of modern relativistic cosmology. Such a theory coincides with general relativity in vacuum, and the resulting field equations are here solved for a Dunn and Tupper metric, for departures from an interior Schwarzschild solution as well as for a Friedmann-Lemaitre-Robertson-Walker universe.
description: 3 figures, Revtex4
Pumping angular momentum by driven chaotic scattering
Creators: name: Dittrich, T.
name: Dubeibe, F. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Chaotic scattering with an internal degree of freedom and the possibility to generate directed transport of angular momentum is studied in a specific model, a magnetic dipole moving in a periodically modulated magnetic field confined to a compact region in space. We show that this system is an irregular scatterer in large parts of its parameter space. If in addition all spatio-temporal symmetries are broken, directed transport of mass as well as angular momentum occurs. The sensitive parameter dependence of the corresponding currents includes frequent sign reversals. Zeros of either quantity entail the exclusive occurrence of the other and thus give rise in particular to angular-momentum separation without mass transport as a classical analogue of spin-polarized currents.
description: 17 pages, 12 figures
A New Transient Ultraluminous X-ray Source in NGC 7090
Creators: name: Walton, D. J.
name: Heida, M.
name: Bachetti, M.
name: Furst, F.
name: Brightman, M.
name: Earnshaw, H.
name: Evans, P. A.
name: Fabian, A. C.
name: Grefenstette, B. W.
name: Harrison, F. A.
name: Israel, G. L.
name: Lansbury, G. B.
name: Middleton, M. J.
name: Pike, S.
name: Rana, V.
name: Roberts, T. P.
name: Castillo, G. A. Rodriguez
name: Salvaterra, R.
name: Song, X.
name: Stern, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the discovery of a new, transient ultraluminous X-ray source (ULX) in the galaxy NGC 7090. This new ULX, which we refer to as NGC 7090 ULX3, was discovered via monitoring with $Swift$ during 2019-20, and to date has exhibited a peak luminosity of $L_{\rm{X}} \sim 6 \times 10^{39}$ erg s$^{-1}$. Archival searches show that, prior to its recent transition into the ULX regime, ULX3 appeared to exhibit a fairly stable luminosity of $L_{\rm{X}} \sim 10^{38}$ erg s$^{-1}$. Such strong long-timescale variability may be reminiscent of the small population of known ULX pulsars, although deep follow-up observations with $XMM$-$Newton$ and $NuSTAR$ do not reveal any robust X-ray pulsation signals. Pulsations similar to those seen from known ULX pulsars cannot be completely excluded, however, as the limit on the pulsed fraction of any signal that remains undetected in these data is $\lesssim$20\%. The broadband spectrum from these observations is well modelled with a simple thin disc model, consistent with sub-Eddington accretion, which may instead imply a moderately large black hole accretor ($M_{\rm{BH}} \sim 40 ~ M_{\odot}$). Similarly, though, more complex models consistent with the super-Eddington spectra seen in other ULXs (and the known ULX pulsars) cannot be excluded given the limited signal-to-noise of the available broadband data. The nature of the accretor powering this new ULX therefore remains uncertain.
description: 11 pages, 7 figures; accepted for publication in MNRAS
Pseudoholophrya terricola Berger, Foissner & Adam 1984
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Gymnostomatea
Pseudoholophryida
Pseudoholophryidae
Pseudoholophrya
Pseudoholophrya terricola

description: Pseudoholophrya terricola Berger, Foissner & Adam, 1984
Distribution. VENEZUELA: South margin of the Henri Pittier National Park, Biological Station Rancho Grande (Foissner 2016).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 15, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Black Hole Dynamics From Atmospheric Science
Creators: name: Van Raamsdonk, Mark
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this note, we derive (to third order in derivatives of the fluid velocity) a 2+1 dimensional theory of fluid dynamics that governs the evolution of generic long-wavelength perturbations of a black brane or large black hole in four-dimensional gravity with negative cosmological constant, applying a systematic procedure developed recently by Bhattacharyya, Hubeny, Minwalla, and Rangamani. In the regime of validity of the fluid-dynamical description, the black-brane evolution will generically correspond to a turbulent flow. Turbulence in 2+1 dimensions has been well studied analytically, numerically, experimentally, and observationally as it provides a first approximation to the large scale dynamics of planetary atmospheres. These studies reveal dramatic differences between fluid flows in 2+1 and 3+1 dimensions, suggesting that the dynamics of perturbed four and five dimensional large AdS black holes may be qualitatively different. However, further investigation is required to understand whether these qualitative differences exist in the regime of fluid dynamics relevant to black hole dynamics.
description: 16 pages, LaTeX, v2: caveat regarding relativistic vs non-relativistic fluids added v3: typos corrected
Leveraging Event Specific and Chunk Span features to Extract COVID Events from tweets
Creators: name: Kaushal, Ayush
name: Vaidhya, Tejas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: I.2.7
subject: 68T50

description: Twitter has acted as an important source of information during disasters and pandemic, especially during the times of COVID-19. In this paper, we describe our system entry for WNUT 2020 Shared Task-3. The task was aimed at automating the extraction of a variety of COVID-19 related events from Twitter, such as individuals who recently contracted the virus, someone with symptoms who were denied testing and believed remedies against the infection. The system consists of separate multi-task models for slot-filling subtasks and sentence-classification subtasks while leveraging the useful sentence-level information for the corresponding event. The system uses COVID-Twitter-Bert with attention-weighted pooling of candidate slot-chunk features to capture the useful information chunks. The system ranks 1st at the leader-board with F1 of 0.6598, without using any ensembles or additional datasets. The code and trained models are available at this https URL.
description: EMNLP 2020 Workshop, Oral, 8 pages
Dual AGN candidates with double-peaked [O III] lines matching that of confirmed dual AGNs
Creators: name: Kim, D. -C.
name: Yoon, Ilsang
name: Evans, A. S.
name: Kim, Minjin
name: Momjian, E.
name: Kim, Ji Hoon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have performed a spectral decomposition to search for dual active galactic nuclei (DAGNs) in the Sloan Digital Sky Survey (SDSS) quasars with $z<0.25$. Potential DAGN candidates are searched by referencing velocity offsets and spectral shapes of double-peaked [O III] lines of known DAGNs. Out of 1271 SDSS quasars, we have identified 77 DAGN candidates. Optical and mid-infrared diagnostic diagrams are used to investigate the ionizing source in the DAGN candidates. The optical diagnostic analysis suggests 93\% of them are powered by AGNs, and mid-infrared diagnostic analysis suggests 97\% are powered by AGNs. About 1/3 of the SDSS images of the DAGN candidates show signs of tidal interaction, but we are unable to identify double nuclei in most of them due to the low spatial resolution of the archival imaging data available for most of the sample. The radio-loud fraction of the DAGN candidates ($\sim$10\%) is similar to that of typical AGNs.
description: Ap.J. in press
Simulations of radiation driven winds from Keplerian discs
Creators: name: Raychaudhuri, Sananda
name: Vyas, Mukesh K.
name: Chattopadhyay, Indranil
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the ejection of winds from thin accretion discs around stellar mass black holes and the time evolution of these winds in presence of radiation field generated by the accretion disc. Winds are produced by radiation, thermal pressure and the centrifugal force of the disc. The winds are found to be mildly relativistic, with speeds reaching up to terminal speeds $0.1$ for accretion rate $4$ in Eddington units. We show that the ejected matter gets its rotation by transporting angular momentum from the disc to the wind. We also show that the radiation drag affects the accretion disc winds in a very significant manner. Not only that the terminal speeds are reduced by an order of magnitude due to radiation drag, but we also show that the non-linear effect of radiation drag, can mitigate the formation of the winds from the matter ejected by the accretion disc. As radiation drag reduces the velocity of the wind, the mass outflow rate is reduced in its presence as well.
description: Accepted for publication in MNRAS; 12 pages and 10 figures
Correlation entropy of synaptic input-output dynamics
Creators: name: Kleppe, Ingo C.
name: Robinson, Hugh P. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The responses of synapses in the neocortex show highly stochastic and nonlinear behavior. The microscopic dynamics underlying this behavior, and its computational consequences during natural patterns of synaptic input, are not explained by conventional macroscopic models of deterministic ensemble mean dynamics. Here, we introduce the correlation entropy of the synaptic input-output map as a measure of synaptic reliability which explicitly includes the microscopic dynamics. Applying this to experimental data, we find that cortical synapses show a low-dimensional chaos driven by the natural input pattern.
description: 7 pages, 6 Figures (7 figure files)
Starting Dynamics of a Fully Electronically Controlled Linear Mamyshev Oscillator
Creators: name: Chen, Yi-Hao
name: Sidorenko, Pavel
name: Wise, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We start an environmentally-stable linear Mamyshev oscillator with electronically-controlled modulated pump and a moving filter. It delivers a 21-nJ pulse that becomes 65 fs in duration after a compressor. Reliable starting into stable mode-locking is found achievable with a modulated mode-locked state observed only when the modulation frequency is larger than 70 kHz. To avoid the damage of the gain fiber, two Faraday rotators are introduced. Besides, we have studied several aspects toward obtaining successful starting.
Upcycling and -scaling in furniture value chains micro-ecosystems for cascading use of wood
Creators: name: Partanen, Asta
name: Piltz, Gunilla
name: vom Berg, Christopher
Publisher: name: Zenodo
Year: 2021

description: Description of the "Upcycling and -scaling in furniture value chains micro-ecosystems for cascading use of wood" good practice identified in the WoodCircus Project. Page 12 of the Good Practice Catalogue.