cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A generative model for feedback networks
Creators: name: White, Douglas R.
name: Kejzar, Natasa
name: Tsallis, Constantino
name: Farmer, Doyne
name: White, Scott
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate a simple generative model for network formation. The model is designed to describe the growth of networks of kinship, trading, corporate alliances, or autocatalytic chemical reactions, where feedback is an essential element of network growth. The underlying graphs in these situations grow via a competition between cycle formation and node addition. After choosing a given node, a search is made for another node at a suitable distance. If such a node is found, a link is added connecting this to the original node, and increasing the number of cycles in the graph; if such a node cannot be found, a new node is added, which is linked to the original node. We simulate this algorithm and find that we cannot reject the hypothesis that the empirical degree distribution is a q-exponential function, which has been used to model long-range processes in nonequilibrium statistical mechanics.
description: 11 pages, 6 figures
Matched Asymptotic Expansion for Caged Black Holes - Regularization of the Post-Newtonian Order
Creators: name: Gorbonos, Dan
name: Kol, Barak
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The "dialogue of multipoles" matched asymptotic expansion for small black holes in the presence of compact dimensions is extended to the Post-Newtonian order for arbitrary dimensions. Divergences are identified and are regularized through the matching constants, a method valid to all orders and known as Hadamard's partie finie. It is closely related to "subtraction of self-interaction" and shows similarities with the regularization of quantum field theories. The black hole's mass and tension (and the "black hole Archimedes effect") are obtained explicitly at this order, and a Newtonian derivation for the leading term in the tension is demonstrated. Implications for the phase diagram are analyzed, finding agreement with numerical results and extrapolation shows hints for Sorkin's critical dimension - a dimension where the transition turns second order.
description: 28 pages, 5 figures. v2:published version
"The blood of martyrs is the seed of Christians": Jesuit representation of seventeenth-century New France
Creators: name: Dragonas, Stephanie
Publisher: name: University of British Columbia
Year: 2009

description: Highly ornamented with multiple images, the seventeenth-century map of New France, Novae Franciae Accurata Delineatio, 1657 is unusual in juxtaposing multiple vocabularies. This thesis seeks to locate the map of within concurrent discourses of conversion and colonisation as well as diverse cartographic and religious visual vocabularies. Announced in the 1653 account of the of the Jesuit missions among the Huron Indians, Breve Relatione d'Alcune Missioni de 'PP. Delia Compagnia di Giesu netta Nuova Francia by Italian Jesuit Francesco Bressani, this map attempts to accomplish a task unusual in cartographic discourse; it is expected to visualise a history. In contrast to early modern cartography that tends to stabilise time and place, this map seeks to represent multiple time and multiple space in order to construct a history. The narrative of the Jesuit missionary efforts among the Hurons is conveyed by map through the juxtaposition of multiple visual vocabularies. Ships and sea-monsters inhabit the gulf of St. Lawrence; scenes of native life are scattered across the mapped landscape. These visual vocabularies, the ethnographic, cartographic and religious are all drawn from other printed forms to be placed side by side on the map. Bringing with them their own assumptions and organising principles their juxtaposition opens up the possibility of contestation within the representation. An image of barbarism, sacrifice and redemption, this map also points to the struggles for power involved in the maintenance of the territory of New France. An important site of analysis is the Jesuit Relations, yearly printed accounts which provide a means of interpreting relations produced through the representation of the 'New World' to the Old. Guided by the many Jesuit texts and images that were produced in relation to New France in the seventeenth century in this thesis I propose to trace out some of the possible meanings produced by this map.
Holographic Entanglement Entropy in flat limit of the Generalized Minimal Massive Gravity model
Creators: name: Setare, M. R.
name: Koohgard, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Previously we have studied the Generalized Minimal Massive Gravity (GMMG) in asymptotically $AdS_3$ background, and have shown that the theory is free of negative-energy bulk modes. Also we have shown GMMG avoids the aforementioned bulk-boundary unitarity clash. Here instead of $AdS_3$ space we consider asymptotically flat space, and study this model in the flat limit. The dual field theory of GMMG in the flat limit is a $BMS_3$ invariant field theory, dubbed (BMSFT) and we have BMS algebra asymptotically instead of Virasoro algebra. In fact here we present an evidence for this claim. Entanglement entropy of GMMG is calculated in the background in the flat null infinity. Our evidence for mentioned claim is the result for entanglement entropy in filed theory side and in the bulk (in the gravity side). At first using Cardy formula and Rindler transformation, we calculate entanglement entropy of BMSFT in three different cases. Zero temperature on the plane and on the cylinder, and non-zero temperature case. Then we obtain the entanglement entropy in the bulk. Our results in gravity side are exactly in agreement with field theory calculations.
description: 17 pages, reference and paragraphs added
title: Scientific Project, SciencesPo-LIEPP Interdisciplinary research center for the evaluation of public policies (LIEPP Working Paper, n°0)
Creators: name: Wasmer, Etienne
name: Woll, Cornelia
Publisher: name: Sciences Po - LIEPP
Year: 2011
Subjects: subject: FOS: Social sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Sciences Po develops an interdisciplinary research program for the evaluation of public policies (in French: Laboratoire interdisciplinaire d’évaluation des politiques publiques, LIEPP), based on four founding units: Department of Economics, Centre de Sociologie des Organisations, Centre d’Etudes Européennes and Observatoire Sociologique du Changement. Its aim is to be (1) independent and non-partisan to ensure its credibility, (2) international to learn from experiences in other countries, and finally (3) multidisciplinary in order to achieve thorough and comprehensive knowledge of our environment and its institutional, social, political, legal and economic mechanisms. The project is financed as a through the Excellency Initiative of the French Government (Investissements d'Avenir: LABEX) with a budget of 10 million euros between 2011 to 2020.
Report on the Relevant Legal EU Framework and Assessment of the Ethical Impact
Creators: name: Perduto, Adriana
name: Riccio, Giovanni Maria
name: Salvati, Maria Laura
name: Carnevale, Antonio
Publisher: name: Zenodo
Year: 2021

description: This deliverable consists in a report to frame the most relevant legal EU framework and to outline the most adaptable approaches and methods for assessing the ethical impact of ASSISTANCE. The document analyses the European relevant legal and ethical backgrounds for both defining legal and ethical constraints for ASSISTANCE and preparing the pilot operations and understanding the impact of rescue operations on data protection, privacy and human rights.
Mapping the M31 halo: could it have experienced a recent major merger?
Creators: name: Hammer, Francois
Publisher: name: Zenodo
Year: 2019

description: We demonstrate that a single merger could explain first-order (intensity and size), morphological and kinematical properties of the disk, thick disk, bulge and streams in the halo of M31, as well as the observed distribution of stellar ages, and perhaps metallicities. It challenges the current scenarios assuming that each feature in the disk (the 10 kpc ring) or in its outskirts (thick disk, the Giant Stream and the numerous streams) are associated to an equivalent number of minor mergers. Here we focus on the substructures within the M31 halo including the Giant Stream, which ultimately may set up a more precise geometry of the encounter. We also tentatively show that the observations of the halo kinematics and chemistry can be predicted by our modeling without any further adjustment of the parameters.
Orbital Ordering in ferromagnetic Lu2V2O7
Creators: name: Ichikawa, H.
name: Kano, L.
name: Saitoh, M.
name: Miyahara, S.
name: Furukawa, N.
name: Akimitsu, J.
name: Yokoo, T.
name: Matsumura, T.
name: Takeda, M.
name: Hirota, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have observed the orbital ordering in the ferromagnetic Mott-insulator Lu2V2O7 by the polarized neutron diffraction technique. The orbital ordering pattern determined from the observed magnetic form factors can be explained in terms of a linear combination of wave functions |yz>, |zx> and |xy>; |0> = (1/3)^(1/2) |xy> + (1/3)^(1/2)|yz> + (1/3)^(1/2) |zx> which is proportional to |(x + y + z)^2 - r^2>; where each orbital is extended toward the center-of-mass of the V tetrahedron. We discuss the stability of the ferromagnetic Lu2V2O7, using a Hubbard Hamiltonian with these three orbitals.
description: 17pages. to be published in J. Phys. Soc. Jpn. 74 (2005)
Viable Curvaton Models from the $f_{NL}$ Parameter
Creators: name: Guimarães, L. F.
name: Falciano, F. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show how to build a curvaton inflationary model motivated by scale-dependent non-Gaussianities of cosmological perturbations. In particular, we study the change of sign in the $f_{NL}$ parameter as a function of the curvaton field value at horizon crossing and identify it with the cosmic microwave background pivot scale. We devise a procedure to recover the curvaton model that provides the desired $f_{NL}$ parameter. We then present a concrete example of $f_{NL}$ and construct its parent model. We study the constraints applied to this model based on considerations taken on $f_{NL}$. We show that the hemispherical asymmetry can also be used to constrain the scale-dependence of $f_{NL}$ and the model parameters.
description: 11 pages, 8 figures
A family of embedding spaces
Creators: name: Budney, Ryan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R40, 55Q45, 57M25, 57R50

description: Let Emb(S^j,S^n) denote the space of C^infty-smooth embeddings of the j-sphere in the n-sphere. This paper considers homotopy-theoretic properties of the family of spaces Emb(S^j,S^n) for n >= j > 0. There is a homotopy-equivalence of Emb(S^j,S^n) with SO_{n+1} times_{SO_{n-j}} K_{n,j} where K_{n,j} is the space of embeddings of R^j in R^n which are standard outside of a ball. The main results of this paper are that K_{n,j} is (2n-3j-4)-connected, the computation of pi_{2n-3j-3} (K_{n,j}) together with a geometric interpretation of the generators. A graphing construction Omega K_{n-1,j-1} --> K_{n,j} is shown to induce an epimorphism on homotopy groups up to dimension 2n-2j-5. This gives a new proof of Haefliger's theorem that pi_0 (Emb(S^j,S^n)) is a group for n-j>2. The proof given is analogous to the proof that the braid group has inverses. Relationship between the graphing construction and actions of operads of cubes on embedding spaces are developed. The paper ends with a brief survey of what is known about the spaces K_{n,j}, focusing on issues related to iterated loop-space structures.
description: This is the version published by Geometry & Topology Monographs on 22 February 2008
title: Problematyka ochrony „trudnego” dziedzictwa na przykładzie zespołu zamkowo-pałacowego w Żarach. Perspektywa urbanistyczno-architektoniczna
Creators: name: Polak, Emilia
name: Tulska-Bogacka, Adriana
name: Rumież, Agnieszka
Publisher: name: Publishing House of Poznan University of Technology
Year: 2021

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 7, 55-74
Noro-Frenkel scaling in short-range square well: A Potential Energy Landscape study
Creators: name: Foffi, G.
name: Sciortino, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the statistical properties of the potential energy landscape of a system of particles interacting via a very short-range square-well potential (of depth $-u_0$), as a function of the range of attraction $Δ$ to provide thermodynamic insights of the Noro and Frenkel [ M.G. Noro and D. Frenkel, J.Chem.Phys. {\bf 113}, 2941 (2000)] scaling. We exactly evaluate the basin free energy and show that it can be separated into a {\it vibrational} ($Δ$-dependent) and a {\it floppy} ($Δ$-independent) component. We also show that the partition function is a function of $Δe^{βu_o}$, explaining the equivalence of the thermodynamics for systems characterized by the same second virial coefficient. An outcome of our approach is the possibility of counting the number of floppy modes (and their entropy).
description: 4 pages, 4 figures accepted for publication on PRE
Topological susceptibility of pure gauge theory using Density of States
Creators: name: Borsanyi, Szablocs
name: Sexty, Dénes
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The topological susceptibility of the SU(3) pure gauge theory is calculated in the deconfined phase at temperatures up to $10T_c$. At such large temperatures the susceptibility is suppressed, topologically non-trivial configurations are extremely rare. Thus, direct lattice simulations are not feasible. The density of states (DoS) method is designed to simulate rare events, we present an application of the DoS method to the problem of high temperature topological susceptibility. We reconstruct the histogram of the charge sectors that one could have obtained in a naive importance sampling. Our findings are perfectly consistent with a free instanton gas.
description: 10 pages, 6 figures, PLB version
Transcription of the retelling of Reel #4 (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-071119-02a/c/e/g/i: transcription of audio file VP-190317-06, Verdena's description in Hupa of Reel #4 from the LA 256 collection at SCOIL immediately after watching it, from start of file to end of file. Due to re-numbering, Reel #4 has been assigned the CLA item number LA256.043.
The stellar metallicity distribution function of galaxies in the CALIFA survey
Creators: name: Mejía-Narváez, A.
name: Sánchez, S. F.
name: Lacerda, E. A. D.
name: Carigi, L.
name: Galbany, L.
name: Husemann, B.
name: García-Benito, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a novel method to retrieve the chemical structure of galaxies using integral field spectroscopy data through the stellar Metallicity Distribution Function (MDF). This is the probability distribution of observing stellar populations having a metallicity $Z$. We apply this method to a set of $550$ galaxies from the CALIFA survey. We present the behaviour of the MDF as a function of the morphology, the stellar mass and the radial distance. We use the stellar metallicity radial profiles retrieved as the first moment of the MDF, as an internal test for our method. The gradients in these radial profiles are consistent with the known trends: they are negative in massive early-type galaxies and tend to positive values in less massive late-type ones. We find that these radial profiles may not convey the complex chemical structure of some galaxy types. Overall, low mass galaxies ($\log{M_\star/\mathrm{M}_{\odot}}\leq10$) have broad MDFs ($σ_Z\sim1.0\,$dex), with unclear dependence on their morphology. However this result is likely affected by under-represented bins in our sample. On the other hand, massive galaxies ($\log{M_\star/\mathrm{M}_{\odot}}\geq11$) have systematically narrower MDFs ($σ_Z\leq0.2\,$dex). We find a clear trend whereby the MDFs at $r_k/R_e>1.5$ have large variance. This result is consistent with sparse SFHs in medium/low stellar density regions. We further find there are multi-modal MDFs in the outskirts ($\sim18\,$per cent) and the central regions ($\sim40\,$per cent) of galaxies. This behaviour is linked to a fast chemical enrichment during early stages of the SFH, along with the posterior formation of a metal-poor stellar population.
description: 18 pages, 12 figures
Molecular structure of the Bs0*(5725) and Bs1(5778) bottom-strange mesons
Creators: name: Faessler, Amand
name: Gutsche, Thomas
name: Lyubovitskij, Valery E.
name: Ma, Yong-Liang
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a possible interpretation of the scalar Bs0*(5725) and axial Bs1(5778) bottom-strange mesons as hadronic molecules - bound states of B K and B* K mesons, respectively. Using a phenomenological Lagrangian approach we analyze the strong Bs0* to Bs pi0, Bs1 to Bs* pi0 and the radiative Bs0* to Bs* gamma, Bs1 to Bs gamma, Bs1 to Bs* gamma, Bs1 to Bs0* gamma decays. We give predictions for the decay properties: effective couplings and decay widths.
description: 21 pages, 7 figures
Multi-levels Hepatitis E Virus Spread In Various Epidemiological Contexts: Combining Complex Network Analysis & Disease Transmission Model
Creators: name: Pachka, Hammami
name: Stefan, Widgren
name: Grosbois Vladimir
name: Apolloni Andrea
name: Nicolas, Rose
name: Mathieu, Andraud
Publisher: name: Zenodo
Year: 2021

description: Hepatitis E virus (HEV) is a highly prevalent zoonotic virus in pigs responsible for potentially severe hepatitis in humans. Within-farm transmission between pigs involves faecal–oral route, either by direct contact or through the environment. Live animal movements are known to be the main factor of spread between farms. The pig production chain consists of several interconnected farms, forming a complex network highly structured in space and time. Each farm being composed of specific sectors, we simulated realistic within- and between-farm population dynamics to feed a multi-level epidemiological model aiming at testing surveillance and control scenarios at national scale. Between farms movements from 2017 to 2020 provided by the French national pig identification database (BDporc) were analysed using network analysis methods. Three subsets defined by the type of animals shipment (breeding sows, piglets and growing pigs) and for a six-month period were further analysed using Exponential Random Graph Models to assess between farms contact probabilities. Results were validated by goodness of fit analysis, cross-validation and graphical comparison of maps. Estimated contact probabilities as well as common batch rearing systems characteristics were used to feed a stochastic demographic model simulating pig movements at three-levels: between pens, between sectors and between farms according to deterministic clock and weighted random movements. It turn, the simulated dynamics were used to feed a multi-level epidemiological model developed with the SimInf package. The prevalence of HEV-positive pigs sent to slaughterhouses was estimated for various surveillance and control scenarios to assess the efficacy of different within-farm biosecurity measures at sector and pen levels. Those results will feed a Quantitative Microbiological Risk Assessment model to assess the risk of human exposure to HEV through consumption of swine products.
Von Dombes, Gruppe: Für die Umkehr der Kirchen, Identität und Wandel im Vollzug der Kirchengemeinschaft
Creators: name: Kindt-Siegwalt, Irmgard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 44 Nr. 4 (1995): Ökumenische Rundschau, Band 44, Heft 4
A qualitative study of the Québec sawmilling industry
Creators: name: Savoie, Anne
Publisher: name: University of British Columbia
Year: 2009

description: During the late 1980s, research demonstrated the link between the continual adoption of new technologies and the improvement of sawmill performances. (Capon and Glazer 1987, Cohen and Sinclair 1989) This was a preliminary assessment of the Canadian sawmilling industry. During 1995, forty sawmills within the Quebec Region were surveyed and visited to draw a qualitative portray for the Quebec Sawmilling Industry. Equipment, quality control and training were technology fields analyzed by the research. Cluster analysis allowed the correlation of technologies with product and market statistics. Results give information on the existing synergy among these parameters by the identification of two different types of mills which have respectively high technology equipment and show high intensity in quality control activities. Important benefits result from the global study of technological indicators. Critical information upon the most specific parameters that need to be addressed to improve global sawmilling performance is provided. Training needs of the sawmilling industry are established to increase the global competitiveness of this industrial sector. Finally, the industry limits and future orientations regarding the different markets' penetration are drawn.
Progress report on Gender Dimension Strategy GDS
Creators: name: Cuesta, Arturo
name: Alvear, Daniel
name: Ortiz, Gemma
name: González, Javier
name: Abreu, Orlando
Publisher: name: Zenodo
Year: 2021

description: This progress report presents an overall methodology, based on a detailed review of the state of the art, to integrate gender dimension and guide gendered research within the ASSISTANCE project. It has been prepared by the University of Cantabria (UC).
Excitonic and valleytronic signatures of correlated states at fractional fillings of a moiré superlattice
Creators: name: Liu, Erfu
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Gabor, Nathaniel M.
name: Cui, Yong-Tao
name: Lui, Chun Hung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Moiré superlattices are excellent platforms to realize strongly correlated quantum phenomena, such as Mott insulation and superconductivity. In particular, recent research has revealed stripe phases and generalized Wigner crystals at fractional fillings of moiré superlattices. But these experiments have not focused on the influence of electronic crystallization on the excitonic and valleytronic properties of the superlattices. Here we report excitonic and valleytronic signatures of correlated states at fractional fillings in a WSe$_2$/WS$_2$ moiré superlattice. We observe reflection spectral modulation of three intralayer moiré excitons at filling factors $ν$ = 1/3 and 2/3. We also observe luminescence spectral modulation of interlayer trions at around a dozen fractional filling factors, including $ν$ = -3/2, 1/4, 1/3, 2/5, 2/3, 6/7, 5/3. In addition, the valley polarization of interlayer trions is noticeably suppressed at some fractional fillings. These results demonstrate a new regime of light-matter interactions, in which electron crystallization significantly modulates the absorption, emission, and valley dynamics of the excitonic states in a moiré superlattice.
Statistics of phase correlations as a test for non-Gaussianity of the CMB maps
Creators: name: Naselsky, Pavel
name: Chiang, Lung-Yih
name: Olesen, Poul
name: Novikov, Igor
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gaussianity is the very base for derivation of the cosmological parameters from the CMB angular power spectrum. Non-Gaussian signal, whether originated from experimental error or primordial source, could mimic extra power in the power spectrum, thereby leading to a wrong set of parameters. In this paper we present a new Gaussianity analysis of the derived CMB singals. It is based on the trigonometric moments of phases, which can be concluded with a ``mean angle'', allowing us to see the global trend of non-Gaussianity of the signals. These moments are also closely related to the Pearson's random walks. We apply these analyses on the derived CMB maps and their different morphologies manifest themselves through these functions. We also comment on rotational invariance of the trigonometric moments of phases as a non-Gaussianity test.
description: 12 pages, submitted to PRD, more references added
The problem of completeness for Gromov-Hausdorff metrics on C*-algebras
Creators: name: Guido, Daniele
name: Isola, Tommaso
Publisher: name: arXiv
Year: 2005
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L87;53C23;58B34;46B08

description: It is proved that the family of equivalence classes of Lip-normed C*-algebras introduced by M. Rieffel, up to isomorphisms preserving the Lip-seminorm, is not complete w.r.t. the matricial quantum Gromov-Hausdorff distance introduced by D. Kerr. This is shown by exhibiting a Cauchy sequence whose limit, which always exists as an operator system, is not completely order isomorphic to any C*-algebra. Conditions ensuring the existence of a C*-structure on the limit are considered, making use of the notion of ultraproduct. More precisely, a necessary and sufficient condition is given for the existence, on the limiting operator system, of a C*-product structure inherited from the approximating C*-algebra. Such condition can be considered as a generalisation of the f-Leibniz conditions introduced by Kerr and Li. Furthermore, it is shown that our condition is not necessary for the existence of a C*-structure tout court, namely there are cases in which the limit is a C*-algebra, but the C*-structure is not inherited.
description: 31 pages. Accepted for publication in Journal of Functional Analysis
What are the progenitors of the intragroup light stars around M49?
Creators: name: Hartke, Johanna
Publisher: name: Zenodo
Year: 2019

description: The interactions between galaxies in dynamically rich environments like clusters and groups of galaxies lead to the libration of stars that form the diffuse intra-cluster or intra-group light (IGL). The IGL is a good laboratory to study the properties of late-accreted satellites in the proximity of the brightest group galaxy and to compare these to cosmological simulations.
 To overcome the challenges posed by the extremely low surface brightness of the diffuse IGL, we use planetary nebulae (PNe) as tracers of the IGL. Their individual line-of-sight velocities can be easily measured even at distances of the Coma Cluster (100 Mpc). In M49 (NGC 4472), the brightest galaxy in the Virgo Cluster and centre of the Subcluster B, we are able to measure a rising galaxy velocity dispersion from the velocities of individual stars (PNe) reaching that of the Subcluster B at large radii. This is a tell-tale sign of halo-to-IGL transition.
 Based on the IGL kinematics, its smooth morphology and strong blueward colour gradient, we infer that the progenitors of the IGL stars had to be old (> 5 Gyr) and metal-poor ([Fe/H] << -1). Hence they would lie on the low-mass end of the mass-metallicity relation (<10^8 M_sun), being 1000 times less massive than M49. This low mass challenges the predictions from hydrodynamical cosmological simulations, which indicate more massive and metal-rich galaxies as progenitors of the IGL. Our results provide new insights on the assembly of the Virgo Subcluster B IGL and place constraints on the feedback mechanisms in cosmological simulations as they currently underestimate the star formation in low-mass satellite galaxies.
Modeling Urban Growth and Socio-Spatial Dynamics of Hangzhou: 1964-2010
Creators: name: Feng, Jian
name: Chen, Yanguang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Urban population density provides a good perspective for understanding urban growth and socio-spatial dynamics. Based on sub-district data of the five times of national population censuses in 1964, 1982, 1990, 2000, and 2010, this paper is devoted to making analyses of urban growth and the spatial restructuring of population in the city of Hangzhou, China. Research methods are based on mathematical modeling and field investigation. The modeling result shows that the negative exponential function and the power-exponential function can be well fitted to Hangzhou's observational data of urban density. The negative exponential model reflect the expected state, while the power-exponential model reflects the real state of urban density distribution. The parameters of these models are linearly correlated to the spatial information entropy of population distribution. The density gradient in the negative exponential function flattened in the 1990s and 2000s is closely related to the development of suburbanization. In terms of investigation materials and the changing trend of model parameters, we can reveal the spatio-temporal features of Hangzhou's urban growth. The main conclusions can be reached as follows. The policy of reformation and opening-up and the establishment of a market economy improved the development mode of Hangzhou. As long as a city has a good social and economic environment, it will automatically tend to the optimal state through self-organization.
description: 29 pages,4 figures, 6 tables
Chaplygin traversable wormholes
Creators: name: Lobo, Francisco S. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The generalized Chaplygin gas (GCG) is a candidate for the unification of dark energy and dark matter, and is parametrized by an exotic equation of state given by $p_{ch}=-A/ρ_{ch}^α$, where $A$ is a positive constant and $0
description: 9 pages, 2 figures, Revtex4. V2: Considerable comments and references added, now 10 pages
STRATIGRAPHY OF THE CAPORALINO-SANT’ANGELO UNIT: A FAKE JURASSIC-EOCENE SUCCESSION OF THE “ALPINE” CORSICA
Creators: name: PUCCINELLI, ALBERTO
name: PERILLI, NICOLA
name: CASCELLA, ANTONIO
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Stratigraphy; Clastic deposits; Calcareous nannofossils; Foraminifera; Eocene; Corsica; France

description: This paper aims to provide new insights on the Caporalino-Sant’Angelo Unit outcropping north of Corte, in the Caporalino-Omessa area (NE Corsica). It belongs to the stack of the units from the “Alpine” Corsica, which overlies the “Hercynian” Corsica basement and its sedimentary cover. Based on a geological mapping, a refined lithostratigraphy and new datings, the Caporalino-Sant’Angelo Unit is a fake Middle Jurassic-Middle Eocene succession, sedimented on the European continental margin, because it is a Middle Eocene clastic wedge, accumulated in a synorogenic compressive basin located between the European distal continental margin and the deforming “Corsican” accretionary wedge. This basin received the siliciclastic input from the “Hercynian” Corsica basement, and the carbonatic input derived from the sedimentary cover of tectonic units, subsequently involved into the complex “Corsican” accretionary wedge.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
Jarlskog's Parametrization of Unitary Matrices and Qudit Theory
Creators: name: Fujii, Kazuyuki
name: Funahashi, Kunio
name: Kobayashi, Takayuki
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the paper (math-ph/0504049) Jarlskog gave an interesting simple parametrization to unitary matrices, which was essentially the canonical coordinate of the second kind in the Lie group theory (math-ph/0505047). In this paper we apply the method to a quantum computation based on multi-level system (qudit theory). Namely, by considering that the parametrization gives a complete set of modules in qudit theory, we construct the generalized Pauli matrices which play a central role in the theory and also make a comment on the exchange gate of two-qudit systems. Moreover we give an explicit construction to the generalized Walsh-Hadamard matrix in the case of n=3, 4 and 5. For the case of n=5 its calculation is relatively complicated. In general, a calculation to construct it tends to become more and more complicated as n becomes large. To perform a quantum computation the generalized Walsh-Hadamard matrix must be constructed in a quick and clean manner. From our construction it may be possible to say that a qudit theory with $n\geq 5$ is not realistic. This paper is an introduction towards Quantum Engineering.
description: Latex, 20 pages, 2 figures, minor changes. To appear in International Journal of Geometric Methods in Modern Physics
FUNCTIONAL IMPLICATIONS OF A SINGULAR PENGUIN SCAPULA (AVES, SPHENISCIFORMES) FROM THE EOCENE OF ANTARCTICA
Creators: name: ACOSTA HOSPITALECHE, CAROLINA
name: DI CARLO, ULISES
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Eocene; Antarctica; Fossil Penguins; Functional morphology; diving mechanics

description: Penguins have peculiar modifications in their skeletal anatomy as a consequence of their extremely specialized diving habit. Morphological specialization is particularly evident in the forelimb. However, the kinematics of the pectoral girdle appears to be key to the locomotion of penguins. Penguin scapulae have an unusual morphology among birds. Modern penguins have a very large (especially broad) scapula, whereas this bone is long but narrower in basal fossil species. The recent finding of an incomplete scapula with a singular acromion in the Upper Eocene Submeseta Allomember of the La Meseta Formation in the Antarctic Peninsula reveals a scapula proportionally narrower than those of modern penguins but similar to that of Waimanu and possibly other Eocene species. Osteological comparisons and muscular dissections of modern penguins show that the most striking feature is the curvature of the acromion, and the consequent enlargement of the facies articularis clavicularis. The configuration of the acromion and the corpus scapula reflects a lack of functional optimization in terms of the resistance to forces transverse to the body axis. The scapula´s general morphology suggests it belonged to a medium to large-sized penguin species with no so specialized diving skills.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
FACIES PARTITIONING AND SEQUENCE STRATIGRAPHY OF A MIXED SILICICLASTIC-CARBONATE RAMP STACK IN THE GELASIAN OF SICILY (S ITALY): A POTENTIAL MODEL FOR ICEHOUSE, DISTALLY-STEEPENED HETEROZOAN RAMPS
Creators: name: MASSARI, FRANCESCO
name: D’ALESSANDRO, ASSUNTA
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: distally steepened ramps; heterozoan carbonate; icehouse; palaeoecology; taphonomy; sequence stratigraphy

description: The Gelasian succession of the Capodarso area (Enna-Caltanissetta basin, Sicily, Italy) consists of an offlapping stack of cycles composed of siliciclastic units passing to carbonate heterozoan, clino-stratified wedges, developed from a growing positive tectonic structure. Identification of a number of facies tracts, based on sedimentary facies, biofacies and taphofacies, provided important information about the differentiation and characterisation of systems tracts and key stratal surfaces of sequence stratigraphy. The bulk of carbonate wedges are interpreted as representing the rapid falling-stage progradation of distally steepened ramps. The inferred highest rate of carbonate production during forced regressions was concomitant with active downramp resedimentation by storm-driven downwelling flows, leading to storing of most carbonate sediment on the ramp slope as clino-beds of the prograding bodies. Comparison of the Capodarso ramps with other icehouse carbonate ramps, with particular regard to the Mediterranean Plio-Pleistocene, provides clues for defining some common features. These are inferred to include: (1) brief, rapid episodes of progradation concomitant with orbitally-forced sea-level changes, resulting in limited ramp width; (2) preferential fostering of growth and downramp resedimentation of heterozoan carbonates during glacial hemicycles marked by enhanced atmospheric and marine circulation; (3) building out from positive features of entirely submerged distally-steepened ramps with storm-wave-graded profile and distinctive clinoforms; (4) ramp stacks generally consisting of mixed clastic-carbonate sequences showing an ordered spectrum of distinct frequencies; (5) rapid, continuous changes in environmental parameters, leading to the short-lived persistence of faunal communities, climax communities generally having insufficient time to form.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
EVOLUTIONARY TRENDS AND STASIS IN MOLAR MORPHOLOGY OF RHAGAPODEMUS-RHAGAMYS LINEAGE IN THE PLEISTOCENE OF SARDINIA
Creators: name: PIRAS, PAOLO
name: SANSALONE, GABRIELE
name: MARCOLINI, FEDERICA
name: TUVERI, CATERINELLA
name: ARCA, MARISA
name: KOTSAKIS, TASSOS
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: murid molars; Sardinia; Pleistocene; morphometrics; modes of evolution; stasis; random walk

description: Stasis, random walk and directional evolutionary patterns have been tested on the lower and upper first molars of the Rhagapodemus-Rhagamys lineage (Rodentia, Muridae) from Middle and Late Pleistocene fissure fillings of Monte Tuttavista, Orosei, Sardinia, Italy. We recorded the maximum length/maximum width ratio and size on 252 lower first molars and 208 upper first molars belonging to different fossil samples of Rhagapodemus minor and Rhagamys orthodon in order to explore evolutionary dynamics underlying molar morphology evolution. Akaike Information Criterion (AICc) was used for selection of the best model of evolution, in order to distinguish different evolutionary patterns. Our results clearly show that Rhagapodemus-Rhagamys lineage undergoes stasis during the middle and late Pleistocene of Sardinia, while size shows a random walk pattern between populations, characterized by an increase in size at the Rhagapodemus minor-Rhagamys orthodon transition.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
Permafrost long term observatories of the Alfred-Wegener-Institute
Creators: name: Lange, Stephan
name: Grünberg, Inge
name: Bornemann, Niko
name: Lehr, Christian
name: Cable, William
name: Boike, Julia
Publisher: name: Zenodo
Year: 2021
Subjects: subject: physical limits
subject: zero curtain
subject: snow covering
subject: water table
subject: decreased accuracy
subject: plausibility
subject: gradient
subject: sensor limits
subject: maintenance
subject: system error
subject: no data
subject: minima maxima
subject: quantile
subject: soil
subject: permafrost
subject: time series
subject: 10.5281/zenodo.5769639
subject: 10.5281/zenodo.5769633
subject: 10.5281/zenodo.5769635
subject: 10.5281/zenodo.5769621
subject: 10.5281/zenodo.5769615

description: This document gives an overview of the data quality flagging routines used in the data-publications
 of the permafrost long term observatories of the Alfred-Wegener-Institute. To get the code, use the Subject links to github.
Numerical biases on IMF determinations created by binning
Creators: name: Apellániz, J. Maíz
name: Úbeda, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We detect and quantify significant numerical biases in the determination of the slope of power laws with Salpeter (or similar) indices from uniformly-binned data using chi-square minimization. The biases are caused by the correlation between the number of stars per bin and the assigned weights and are especially important when the number of stars per bin is small. This result implies the existence of systematic errors in the values of IMFs calculated in this way. We propose as an alternative using variable-size bins and dividing the stars evenly among them. Such variable-size bins yield very small biases that are only weakly dependent on the number of stars per bin. Furthermore, we show that they allow for the calculation of reliable IMFs with only a small total number of stars. Therefore, they are a preferred alternative to the standard uniform-size binning.
description: 21 pages, 6 figures, to appear in the 20 August 2005 issue of the ApJ
Transcription of the retelling of Reel #3 (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-311019-08: Transcription of Verdena's description of Reel #3 from the LA 256 collection immediately after watching it, file VP-180317-10, from 2:50 to the end of the file. Due to re-numbering, Reel #3 has been assigned the CLA item number LA256.042.
Coupling of quantum angular momenta: an insight into analogic/discrete and local/global models of computation
Creators: name: Marzuoli, Annalisa
name: Rasetti, Mario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computational Complexity (cs.CC)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In the past few years there has been a tumultuous activity aimed at introducing novel conceptual schemes for quantum computing. The approach proposed in (Marzuoli A and Rasetti M 2002, 2005a) relies on the (re)coupling theory of SU(2) angular momenta and can be viewed as a generalization to arbitrary values of the spin variables of the usual quantum-circuit model based on `qubits' and Boolean gates. Computational states belong to finite-dimensional Hilbert spaces labelled by both discrete and continuous parameters, and unitary gates may depend on quantum numbers ranging over finite sets of values as well as continuous (angular) variables. Such a framework is an ideal playground to discuss discrete (digital) and analogic computational processes, together with their relationships occuring when a consistent semiclassical limit takes place on discrete quantum gates. When working with purely discrete unitary gates, the simulator is naturally modelled as families of quantum finite states--machines which in turn represent discrete versions of topological quantum computation models. We argue that our model embodies a sort of unifying paradigm for computing inspired by Nature and, even more ambitiously, a universal setting in which suitably encoded quantum symbolic manipulations of combinatorial, topological and algebraic problems might find their `natural' computational reference model.
description: 17 pages, 1 figure; Workshop `Natural processes and models of computation' Bologna (Italy) June 16-18 2005; to appear in Natural Computing
A NEW OLIGO-MIOCENE MAMMAL-BEARING SITE FROM A SEDIMENTARY INTERCALATION IN THE TRAP BASALTS OF CENTRAL ERITREA.
Creators: name: ABBATE, ERNESTO
name: BRUNI, PIERO
name: COPPA, ALFREDO
name: ARIA, DAWIT
name: P. FERRETTI, MARCO
name: LIBSEKAL, YOSIEF
name: ROOK, LORENZO
name: SAGRI, MARIO
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Afrotheria; Proboscidea; Oligo-Miocene; intertrappean sediments; Central Eritrea

description: We report the findings of two proboscideans from a sedimentary intercalation within the Central Eritrea Tertiary Trap basalt succession. These intertrappean sediments can be traced continuously between Tera’emni and Adi Quala in the Mendefera region, and are interbedded between the underlying Asmara/Aiba-Alaji basalts and the overlying Adi Ugri basalt. This intercalation is up to 50 m thick and consists of a predominant intensely pedogenized red, green and gray mudstone and siltstone with subordinate channelized pebbly sandstone. The newly discovered mammal remains come from the coarse-grained deposits in the Mai Gobro section.  Available radiometric datings of the host volcanic rocks constrain the age of the fossils between 24.6 and 22.1 Ma, i.e. at the transition between the Oligocene and the Miocene. The fossil vertebrate remains from Mai Gobro represent two proboscidean families, Deinotheriidae and Gomphotheriidae. The morphological grade of the two Mai Gobro proboscideans would suggest a more derived stage than that of representatives of the same families known from other Oligocene African sited (e.g. Chilga, Ethiopia), suggesting a possible Oligo-Miocene age.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
Do Not Be Fooled: Toward a Holistic Comparison of Distributed Ledger Technology Designs
Creators: name: Gräbe, Florian
name: Kannengießer, Niclas
name: Lins, Sebastian
name: Sunyaev, Ali
Publisher: name: ScholarSpace
Year: 2020

description: Distributed Ledger Technology (DLT) enables a new way of inter-organizational collaboration via a shared and distributed infrastructure. There are plenty of DLT designs (e.g., Ethereum, IOTA), which differ in their capabilities to meet use case requirements. A structured comparison of DLT designs is required to support the selection of an appropriate DLT design. However, existing criteria and processes are abstract or not suitable for an in-depth comparison of DLT designs. We select and operationalize DLT characteristics relevant for a comprehensive comparison of DLT designs. Furthermore, we propose a comparison process , which enables the structured comparison of a set of DLT designs according to application requirements. The proposed process is validated with a use case analysis of three use cases. We contribute to research and practice by introducing ways to operation-alize DLT characteristics and generate a process to compare different DLT designs according to their suit-ability in a use case.