cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Feature Extraction for Universal Hypothesis Testing via Rank-constrained Optimization
Creators: name: Huang, Dayu
name: Meyn, Sean
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper concerns the construction of tests for universal hypothesis testing problems, in which the alternate hypothesis is poorly modeled and the observation space is large. The mismatched universal test is a feature-based technique for this purpose. In prior work it is shown that its finite-observation performance can be much better than the (optimal) Hoeffding test, and good performance depends crucially on the choice of features. The contributions of this paper include: 1) We obtain bounds on the number of εdistinguishable distributions in an exponential family. 2) This motivates a new framework for feature extraction, cast as a rank-constrained optimization problem. 3) We obtain a gradient-based algorithm to solve the rank-constrained optimization problem and prove its local convergence.
description: 5 pages, 4 figures, submitted to ISIT 2010
La governance della società  di capitale a base familiare: "Protocolo Familiar" e Patti di Famiglia
Creators: name: Serrano Canas, José Manuel <1977>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: IUS/04 Diritto commerciale

description: Family businesses have acquired a very specific gravity in the economy of occidental countries, generating most of the employment and the richness for the last ages. In Spain Family Businesses represent the 65% about the total of enterprises with 1,5 million companies. They give employment to 8 million people, the 80% of the private employment and develop the 65% of the Spanish GNP (Gross National Product). Otherwise, the family business needs a complete law regulation that gives satisfaction to their own necessities and challenges. These companies have to deal with national or international economic scene to assure their permanency and competitiveness. In fact, the statistics about family companies have a medium life of 35 years. European family businesses success their successor process between a 10 and 25%. Itâs said: first generation makes, second generation stays, third generation distributes. In that sense, the Recommendation of the European Commission of December 7Âº 1994 about the succession of the small and medium companies has reformed European internal orders according to make easier successor process and to introduce practices of family companiesâ good government. So, the Italian law, under the 14th Law, February 2006, has reformed its Covil Code, appearing a new concept, called âPatto di famigliaâ, wich abolish the prohibition as laid dwon in the 458 article about successorsâ agreements, admitting the possibility that testator guarantees the continuity of the company or of the family society, giving it, totally or in part, to one or various of its descendents. On other hand, Spain has promulgated the 17th Royal Decree (9th February 2007), that governs the publicity of family agreements (Protocolos familiars). These âprotocolo familiarâ (Family Agreement) are known as accord of wills, consented and accepted unanimously of all the family members and the company, taking into account recommendations and practices of family companyâs good government.
On the fundamental group of II_1 factors and equivalence relations arising from group actions
Creators: name: Popa, Sorin
name: Vaes, Stefaan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Given a countable group G, we consider the sets S_factor(G), S_eqrel(G), of subgroups F of the positive real line for which there exists a free ergodic probability measure preserving action G on X such that the fundamental group of the associated II_1 factor, respectively orbit equivalence relation, equals F. We prove that if G is the free product of Z and infinitely many copies of a non-trivial group Γ, then S_factor(G) and S_eqrel(G) contain R_+ itself, all of its countable subgroups, as well as uncountable subgroups whose log can have any Hausdorff dimension in the interval (0,1). We then prove that if G=Γ*Λ, with Γ, Λfinitely generated ICC groups, one of which has property (T), then S_factor(G)=S_eqrel(G)={1}. We also show that there exist II_1 factors M such that the fundamental group of M is R_+, but the associated II_\infty factor M tensor B(l^2) admits no continuous trace scaling action of R_+.
description: Final version. We incorporated a result by Ershov: as a consequence, it is shown that free ergodic actions of non-icc property (T) groups can give rise to McDuff II_1 factors, in particular having fundamental group R_+
Covariant definition of Double Null Data and geometric uniqueness of the characteristic initial value problem
Creators: name: Mars, Marc
name: Sánchez-Pérez, Gabriel
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The characteristic Cauchy problem of the Einstein field equations has been recently addressed from a completely abstract viewpoint by means of hypersurface data and, in particular, via the notion of double null data. However, this definition was given in a partially gauge-fixed form. In this paper we generalize the notion of double null data in a fully diffeomorphism and gauge covariant way, and show that the definition is complete by proving that no extra conditions are needed to embed the double null data in some spacetime. The second aim of the paper is to show that the characteristic Cauchy problem satisfies a geometric uniqueness property. Specifically, we introduce a natural notion of isometry at the abstract level such that two double null data that are isometric in this sense give rise to isometric spacetimes.
description: 36 pages, 1 figure
First Principle Study of Alkaline Metal Intercalation in Twisted Bilayer Graphene
Creators: name: Perera, N K R
name: Abeywickrama, K M
name: De Silva, W W P
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The intercalant alkaline metals, Ca, Sr, & Ba, are sources of a periodic perturbation on the bilayer graphene, which leads to the formation of an N-type semiconductors. The twist angle between graphene layers applies disorder to the intercalated bilayer graphene to tune the bandgap. The twisted bilayer graphene structures of C8MC8 (M: Ca, Sr, Ba) were studied for the Energy band diagrams, Density of States, transport properties of Seebeck coefficient, Hall coefficient, Thermal conductivity, and Electrical conductivity using Quantum-Espresso and BoltzTrap software. The bandgap enhances with respect to an increase in twist angle to values of technological requirements to implement in real applications. The peak of the Seebeck coefficient & Hall Effect increase, and Thermal Conductivity & Electrical Conductivity decrease for different twist angles. Therefore, C8MC8 has a significant impact of the twist angle, hence gives possible tailoring of material properties.
Self-Improving Algorithms
Creators: name: Ailon, Nir
name: Chazelle, Bernard
name: Clarkson, Kenneth L.
name: Liu, Ding
name: Mulzer, Wolfgang
name: Seshadhri, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences
subject: F.2.2; D.1; F.1.1; I.2.6

description: We investigate ways in which an algorithm can improve its expected performance by fine-tuning itself automatically with respect to an unknown input distribution D. We assume here that D is of product type. More precisely, suppose that we need to process a sequence I_1, I_2, ... of inputs I = (x_1, x_2, ..., x_n) of some fixed length n, where each x_i is drawn independently from some arbitrary, unknown distribution D_i. The goal is to design an algorithm for these inputs so that eventually the expected running time will be optimal for the input distribution D = D_1 * D_2 * ... * D_n. We give such self-improving algorithms for two problems: (i) sorting a sequence of numbers and (ii) computing the Delaunay triangulation of a planar point set. Both algorithms achieve optimal expected limiting complexity. The algorithms begin with a training phase during which they collect information about the input distribution, followed by a stationary regime in which the algorithms settle to their optimized incarnations.
description: 26 pages, 8 figures, preliminary versions appeared at SODA 2006 and SoCG 2008. Thorough revision to improve the presentation of the paper
Maliattha blandula
Creators: name: Aistleitner, Eyjolf
name: Behounek, Gottfried
name: Hoppe, Henri
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Noctuidae
Maliattha
Maliattha blandula

description: Maliattha blandula (GUENÉE, 1862)
M a t e r i a l u n t e r s u c h t: Brava, Nova Sintra, Santana, 490 m, 23.+ 31.10.2012, 5 ex., Fogo, Chã das Caldeiras, Bangeira, 1650 m, 01.12.2013, alle det. Behounek & Kühnert.
V e r b r e i t u n g: Ost-undWestafrika,MadegassischeRegion.
description: Published as part of Aistleitner, Eyjolf, Behounek, Gottfried & Hoppe, Henri, 2023, Ergänzende Daten zur Noctuiden-Fauna der Kapverden (Cabo Verde) (Lepidoptera, Nolidae, Erebidae, Noctuidae), pp. 475-506 in Linzer biologische Beiträge 54 (2) on page 489, DOI: 10.5281/zenodo.10414294
Rito e comunità: Analisi del sacrificio islamico in occasione di Aid al Adha
Creators: name: Codeluppi, Elena <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: M-FIL/05 Filosofia e teoria dei linguaggi

description: La ricerca analizza, con gli strumenti della semiotica della cultura, il rito islamico del sacrificio in occasione di Aid al Adha. Il lavoro dunque esplora un oggetto tradizionalmente più vicino all’interesse etnografico e antropologico. Di tale sapere si rende conto nel Capitolo 1 dedicato interamente a una puntualizzazione dei maggiori studi antropologici elaborati sul sacrificio. Tali riflessioni sono anche l’occasione per problematizzare il dialogo tra semiotica e antropologia, in particolare in riferimento alla costruzione del corpus e alla applicabilità della categoria di “testo” a oggetti e pratiche sociali così complesse. Dopo una descrizione (Capitolo 2) delle caratteristiche del sacrificio islamico, nella seconda parte del lavoro si passa alla vera e propria analisi semiotica del rito in contesto di immigrazione (Capitolo 3), soffermandosi su alcune dimensioni significative per la semiotica: attori (Capitolo 4) e organizzazione spaziale (Capitolo 5).
title: Doctoral Researchers Abroad: Negotiating Language And Identity In A Multilingual Context
Creators: name: Stafford, Mary
Publisher: name: The Open University
Year: 2021

description: This research explores how language and identity are negotiated by study abroad doctoral researchers originally from China, Brazil, Iran and Ukraine whilst studying in France. The research questions investigated the language choices made in the contexts encountered by the SA doctoral researchers, how these choices were negotiated and the potential impacts of the use of both French and English on their identities. To address the three research questions posed in this study I have used a case study framework to explore the SA doctoral researchers’ use of language, their possibilities of negotiation of language choice as well as how these experiences impact their identities using both emic and etic perspectives. A framework was developed from the literature review, using Bourdieu’s concepts of social and linguistic capital as well as habitus. Byram’s work on intercultural awareness was also of relevance, as was Lave and Wenger’s legitimate peripheral participation. For identity the Block, Norton and Ting-Toomey’s work provided a framework. A series of three semi-structured interviews were undertaken with SA doctoral researchers on an individual basis as the main research method, research with further individual interviews with supervisors to explore the questions from another perspective. Other methods included questionnaires and observations of language use in context. The findings show the uses and potential linguistic capital for both English and French often vary depending on the community, affecting access, even with the same members participating and impacting on identities. This can influence the investment of the participants in both languages and ultimately their experience in France. To improve participation SA doctoral researchers should learn a minimum of the local language prior to undertaking three years of study in a non-Englishspeaking country. Investment in social English for local and study abroad doctoral researchers could contribute to better understanding through third space and communication.
Taxonomy, phylogeny and reproductive ecology of Gentiana lutea L.
Creators: name: Rossi, Martina <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: BIO/02 Botanica sistematica

description: This research focuses on taxonomy, phylogeny and reproductive ecology of Gentiana lutea. L..
Taxonomic analysis is a critical step in botanical studies, as it is necessary to recognize taxonomical unit. Herbarium specimens were observed to assess the reliability of several subspecies-diagnostic characters. The analysis of G. lutea genetic variability and the comparison with that of the other species of sect. Gentiana were performed to elucidate phylogenetic relationships among G. lutea subspecies and to propose a phylogenetic hypothesis for the evolution and the colonization dynamics of the section. Appropriate scientific information is critical for the assessment of species conservation status and for effective management plans. I carried out field work on five natural populations and performed laboratory analyses on specific critical aspects, with special regard to G. lutea breeding system and type and efficiency of plant-pollinator system.
Bracts length is a reliable character to identify subsp. vardjanii, however it is not exclusive, hence to clearly identify subsp. vardjanii, other traits have to be considered. The phylogenetic hypotheses obtained from nuclear and chloroplast data are not congruent. Nuclear markers show a monophyly of sect. Gentiana, a strongly species identity of G. lutea and clear genetic identity of subsp. vardjanii. The little information emerging from plastid markers indicate a weak signal of hybridization and incomplete sorting of ancestral lineages. G. lutea shows a striking variation in intra-floral dichogamy probably evolved to reduce pollen-stigma interference. Although the species is partially self-compatible, pollen vectors are necessary for a successful reproduction, and moreover it shows a strong inbreeding depression. G. lutea is a generalist species: within its spectrum of visitors is possible to recognize "nectar thieves" and pollinators with sedentary or dynamic behaviour. Pollen limitation is frequent and it could be mainly explained by poor pollen quality.
Coalitional Control for Self-Organizing Agents
Creators: name: Fele, Filiberto
name: Debada, Ezequiel
name: Maestre, José M.
name: Camacho, Eduardo F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Multiagent Systems (cs.MA)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Coalitional control is concerned with the management of multi-agent systems where cooperation cannot be taken for granted (due to, e.g., market competition, logistics). This paper proposes a model predictive control (MPC) framework aimed at large-scale dynamically-coupled systems whose individual components, possessing a limited model of the system, are controlled independently, pursuing possibly competing objectives. The emergence of cooperating clusters of controllers is contemplated through an autonomous negotiation protocol, based on the characterization as a coalitional game of the benefit derived by a broader feedback and the alignment of the individual objectives. Specific mechanisms for the cooperative benefit redistribution that relax the cognitive requirements of the game are employed to compensate for possible local cost increases due to cooperation. As a result, the structure of the overall MPC feedback can be adapted online to the degree of interaction between different parts of the system, while satisfying the individual interests of the agents. A wide-area control application for the power grid with the objective of minimizing frequency deviations and undesired inter-area power transfers is used as study case.
description: 14 pages, 8 figures
Conformality or confinement (II): One-flavor CFTs and mixed-representation QCD
Creators: name: Poppitz, Erich
name: Unsal, Mithat
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study QCD-like four dimensional theories in the theoretically controlled framework of deformation theory and/or twisted partition function on S*1 x R*3. By using duality, we show that a class of one-flavor theories exhibit new physical phenomena: discrete chiral symmetry breaking induced by the condensation of topological disorder operators, and confinement and the generation of mass gap due to new non-selfdual topological excitations. In the R*4 limit, we argue that the mass gap disappears, the chiral symmetry breaking vacua are of runaway type, and the theory flows to a CFT. We also study mixed-representation theories and find abelian chiral symmetry breaking by topological operators charged under abelian chiral symmetries. These are reminiscent to, but distinct, from Seiberg-Witten theory with matter, where 4d monopoles have non-abelian chiral charge. This examination also helps us refine our recent bounds on the conformal window. In an Addendum, we also discuss mixed vectorlike/chiral representation theories, obtain bounds on their conformal windows, and compare with the all-order beta function results of arXiv:0911.0931.
description: 30 pages, 2 figures; added new references and an addendum on mixed vectorlike/chiral representations, including comparison with all-order beta function results of arXiv:0911.0931; version to be published
Constraints on stellar opacities from asteroseismology of $\delta$ Sct and SX Phe pulsators
Creators: name: Daszynska-Daszkiewicz, Jadwiga
Publisher: name: Zenodo
Year: 2024

description: We present the results of seismic study of stars that have similar pulsational properties but belong to different stellar populations, i.e., $\delta$ Scuti stars (Population I) and SX Phoenicis stars (Population II). Specifically, we focus on high-amplitude stars that pulsate in at least two radial modes. We construct seismic models of such pulsators with the three opacity table sets widely used in astrophysics: OPAL, OP and OPLIB. The aim is to find the models that reproduce the observed frequencies of the two radial modes and have the effective temperature and luminosity consistent with the observed values. By including the relative amplitude of the bolometric flux variations (the so-called parameter $f$), we constrain also the efficiency of convective transport in the envelopes, described by the mixing length parameter $\alpha_{\rm MLT}$. Using the Bayesian analysis based on Monte Carlo simulations, we find that only the OPAL seismic models are caught within the observed error box in the HR diagram. Seismic models computed with the OP and OPLIB data are much cooler and less luminous.
On the decomposition of connected graphs into their biconnected components
Creators: name: Mestre, Angela
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We give a recursion formula to generate all equivalence classes of biconnected graphs with coefficients given by the inverses of the orders of their groups of automorphisms. We give a linear map to produce a connected graph with say, u, biconnected components from one with u-1 biconnected components. We use such map to extend the aforesaid result to connected or 2-edge connected graphs. The underlying algorithms are amenable to computer implementation.
Onset of Plasmoid Reconnection during Magnetorotational Instability
Creators: name: Rosenberg, Jarrett
name: Ebrahimi, Fatima
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The evolution of current sheets in accretion flows undergoing magnetorotational instability (MRI) is examined through two and three dimensional numerical modelling of the resistive MHD equations in global cylindrical geometry. With an initial uniform magnetic field aligned in the vertical ($z$) direction, MRI produces radially extended toroidal (azimuthal) current sheets. In both 2D and 3D when axisymmetric modes dominate, these current sheets attract each other and merge in the poloidal ($rz$) plane, driving magnetic reconnection when the Lundquist number $S > 3 \times 10^2$, making it a possible source of plasmoids (closed magnetic loops) in accretion disks. At high Lundquist numbers in the 2D regime, starting at $S = 5 \times 10^3$, self-consistent MRI-generated current sheets become thin and subject to plasmoid instability, and therefore spontaneous magnetic reconnection. When non-axisymmetric 3D modes dominate, turbulence makes the azimuthal current sheets further unstable, and stretch vertically. Toroidally extended vertical current sheets in the inner region, as well as larger 3D magnetic islands in the outer regions of the disks are also formed. These findings have strong ramifications for astrophysical disks as potential sources of plasmoids that could cause local heating, particle acceleration, and high energy EM radiation.
description: 12 pages, 6 figures, Accepted for publication to ApJ Letters
Do cooling and heating functions actually exist?
Creators: name: Robinson, David
Publisher: name: Zenodo
Year: 2021

description: Cooling and heating functions for cosmic gas control how the baryonic content of galaxies evolves with time. Previous work has established that these functions depend on both gas properties (e.g. temperature, density, metallicity) and the radiation field incident on the gas, and hence may vary substantially inside a galaxy and between the phases of the ISM. Can a single set of a cooling and a heating function give a good description of the thermodynamics of the ISM? To answer this question, we use simulations from the CROC project (Cosmic Reionization on Computers). These simulations self-consistently model large scale structure formation, hydrodynamics, cosmology, and the reionization process. We find that there is no single cooling or heating function that describes the thermal properties of simulated galaxies; instead, as the hotter, dense gas cools down to the cold phase, its cooling function changes substantially and the resulting cooling rate as a function of temperature is not described by any single cooling function. The same (but in reverse) applies to the gas being heated by stellar feedback. We conclude that fixed cooling and heating functions computed from, say, Cloudy for a fixed set of physical parameters, give an inaccurate description to the actual cooling and heating rates experienced by the thermally evolving ISM gas.
Scaling Limits for Width Two Partially Ordered Sets: The Incomparability Window
Creators: name: Bhatnagar, Nayantara
name: Crawford, Nick
name: Mossel, Elchanan
name: Sen, Arnab
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60C05

description: We study the structure of a uniformly randomly chosen partial order of width 2 on n elements. We show that under the appropriate scaling, the number of incomparable elements converges to the height of a one dimensional Brownian excursion at a uniformly chosen random time in the interval [0,1], which follows the Rayleigh distribution.
description: minor revision
Effects of quantum recoil forces in resistive switching in memristors
Creators: name: Kharlanov, Oleg G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Memristive devices, whose resistance can be controlled by applying a voltage and further retained, are attractive as possible circuit elements for neuromorphic computing. This new type of devices poses a number of both technological and theoretical challenges. Even the physics of the key process of resistive switching, usually associated with formation or breakage of conductive filaments in the memristor, is not completely understood yet. This work proposes a new resistive switching mechanism, which should be important in the thin-filament regime and take place due to the back reaction, or recoil, of quantum charge carriers -- independently of the conventional electrostatically-driven ion migration. Since thinnest conductive filaments are in question, which are only several atoms thick and allow for a quasi-ballistic, quantized conductance, we use a mean-field theory and the framework of nonequilibrium Green's functions to discuss the electron recoil effect for a quantum current through a nanofilament on its geometry and compare it with the transmission probability of charge carriers. Namely, we first study an analytically tractable toy model of a 1D atomic chain, to qualitatively demonstrate the importance of the charge-carrier recoil, and further proceed with a realistic molecular-dynamics simulation of the recoil-driven ion migration along a copper filament and the resulting resistive switching. The results obtained are expected to add to the understanding of resistive switching mechanisms at the nanoscale and to help downscale high-retention memristive devices.
description: 7 pages, 2 figures, version accepted for publication in JETP Letters (text & bibliography extended, accuracy of MD simulations improved)
Q-balls in K-field theory
Creators: name: Faúndez, Aníbal
name: Gannouji, Radouane
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the existence and stability of Q-balls in noncanonical scalar field theories, $K(|Φ|^2,X)$ where $Φ$ is the complex scalar field and $X$ is the kinetic term. We extend the Vakhitov-Kolokolov stability criterion to K-field theories. We derive the condition for the perturbations to have a well-posed Cauchy problem. We find that $K_{,X}>0$ and $K_{,X}+XK_{,XX}>0$ are necessary but not sufficient conditions. The perturbations define a strongly hyperbolic system if $(K_{,X}-2ϕ'^2 K_{,XX})(K_{,X}+2ω^2ϕ^2 K_{,XX}) > 0$. For all modifications studied, we found that perturbations propagate at a speed different from light. Generically, the noncanonical scalar field can lower the charge and energy of the Q-ball and therefore improves its stability.
description: 10 pages, 8 figures, matches the published version
La città di Trento tra Tardo Antico e Alto Medio Evo: la genesi della città medievale e lo spazio del sacro.
The ancient city of Trento between the Late Antiquity and the Early Middle Ages: the birth of the medieval city and the space of the sacred.
Creators: name: Baroncioni, Andrea <1976>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: L-ANT/10 Metodologie della ricerca archeologica

description: Lo scavo della chiesa di Santa MAria Maggiore ha permesso di acquisire nuove importanti informazioni sulla storia della città di Trento, sulla città tardo antica e sul processo di cristianizzazione.
Il primo impianto ecclesiastico, datato a dopo la metà del V d. C. secolo, sorge su un precedente impianto termale realizzato intorno al II secolo d. C. ed appare caratterizzato da un forte carattere monumentale. La chiesa, a tre navate, presentava un presbiterio rialzato decorato in una prima fase da un opus sectile poi sostituito nel VI secolo da un mosaico policromo. Sono state rinvenute inoltre, parti consistenti della decorazione architettonica di fine VIII secolo pertinente questo stesso impianto che non subirà importanti modifiche fino alla realizzazione del successivo edificio di culto medievale, meno esteso e dai caratteri decisamente meno monumentali, caratterizzato dalla presenza di un esteso campo cimiteriale rinvenuto a nord della chiesa. A questo impianto ne succede un terzo, probabilmente a due navate, e dalla ricca decorazione pittorica demolito in età tardo rinascimentale per la realizzazione della chiesa attuale.
description: The excavation of the church of Santa Maria Maggiore allowed us to gain important information on the history of the city of Trento during the Late Antiquity and the process of Christianization.
The first church, of the second half of Vth century AD, stands on a previous thermal structure built around the IInd century AD and is characterized by a strong monumental character. The church, with three naves, presented a raised presbytery, decorated (during the first phase) with an opus sectile then replaced in the VIth century by a polychrome mosaic. Were also found major parts of the architectural decoration of late VIIIth century, belonging to this same system, which won't be significantly modified until the completion of the subsequent medieval religious building, much less extensive and with less monumental aspect, characterized by the presence of an extensive cemetery found at north of the church. The third structural phase, organized in two naves, had rich fresco decorations, and was demolished in the Late Renaissance to build the present church.
Additional file 5 of HLA-A and HLA-DRB1 may play a unique role in ovarian teratoma-associated anti-N-methyl-D-aspartate receptor encephalitis
Creators: name: Zhao, Xiaoya
name: Li, Juan
name: Zhu, Qian
name: Liang, Guiling
name: Xia, Wei
name: He, Xiaoqing
name: Zhu, Chenfeng
name: Qi, Hang
name: Deng, Bo
name: Chen, Xiangjun
name: Zhang, Jian
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 5: Supplementary Figure S4. Full-length western blots for Fig. 4a.
Roger of Hereford: the twelfth-century astronomer who put Hereford on the map, literally
Creators: name: de Grijs, Richard
Publisher: name: arXiv
Year: 2023
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: By the twelfth century, northern European scholars gradually embraced Arabic innovations in science and technology. England naturally developed into a significant centre of the new learning in western Europe. Hereford, and specifically its cathedral school, played a particularly important role in the transition of English scholarship to the new learning. Hereford cathedral developed into a focal point for high-level scholarship, attracting numerous scholars from across the continent. Roger of Hereford stands out among his peers as an enlightened scholar who made more practical use than most of the full astronomical and astrological knowledge base available in England at the time. A significant body of recent scholarship focuses on twelfth-century ecclesiastical developments, including those relating to Roger of Hereford's Computus. However, much less scholarly emphasis is placed on Roger's astronomical calculations, particularly those which allowed him to establish an important reference meridian at Hereford. Those aspects are the focus of this paper.
description: 17 pages, 5 figures; The Local Historian, in press (April 2023 issue; note that the version of record will have B/W figures)
Leveraging generative adversarial networks to create realistic scanning transmission electron microscopy images
Creators: name: Khan, Abid
name: Lee, Chia-Hao
name: Huang, Pinshane Y.
name: Clark, Bryan K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The rise of automation and machine learning (ML) in electron microscopy has the potential to revolutionize materials research through autonomous data collection and processing. A significant challenge lies in developing ML models that rapidly generalize to large data sets under varying experimental conditions. We address this by employing a cycle generative adversarial network (CycleGAN) with a reciprocal space discriminator, which augments simulated data with realistic spatial frequency information. This allows the CycleGAN to generate images nearly indistinguishable from real data and provide labels for ML applications. We showcase our approach by training a fully convolutional network (FCN) to identify single atom defects in a 4.5 million atom data set, collected using automated acquisition in an aberration-corrected scanning transmission electron microscope (STEM). Our method produces adaptable FCNs that can adjust to dynamically changing experimental variables with minimal intervention, marking a crucial step towards fully autonomous harnessing of microscopy big data.
description: 25 pages, 6 figures, 2 tables
Wave driven devices for the oxygenation of bottom layers
Creators: name: Antonini, Alessandro <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: ICAR/01 Idraulica

description: This thesis discusses the design of a system to use wave energy to pump oxygen-rich surface water towards the bottom of the sea.
A simple device, called OXYFLUX, is proposed in a scale model and tested in a wave flume in order to validate its supposed theoretical functioning. 
Once its effectiveness has been demonstrated,  a overset mesh, CFD model has been developed and validated by means of the physical model results. Both numerical and physical results show how wave height affects the behavior of the device. Wave heights lower than about 0.5 m overtop the floater and fall into it. As the wave height increases, phase shift between water surface and vertical displacement of the device also increases its influence on the functioning mechanism. In these situations, with wave heights between 0.5 and 0.9 m, the downward flux is due to the higher head established in the water column inside the device respect to the outside wave field. Furthermore, as the wave height grows over 0.9 m, water flux inverts the direction thanks to depression caused by the wave crest pass over the floater. In this situation the wave crest goes over the float but does not go into it and it draws water from the bottom to the surface through the device pipe. By virtue of these results a new shape of the floater has been designed and tested  in CFD model. Such new geometry is based on the already known Lazzari’s profile and it aims to grab as much water as possible from the wave crest during the emergence of the floater from the wave field. Results coming from the new device are compared with the first ones in order to identify differences between the two shapes and their possible areas of application.
Hot-Carrier Relaxation in Photoinjected ZnSe
Creators: name: Rodrigues, Clóves Gonçalves
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A theoretical investigation of the excess energy dissipation of highly excited photoinjected carriers in zinc selenide (ZnSe) is presented. The calculations are performed by solving numerically coupled quantum transport equations for the carriers and the optical phonons in order to derive the evolution of their nonequilibrium temperatures, dubbed quasitemperatures (or nonequilibrium temperatures). It is shown that the carrier energy dissipation occurs in a picosecond time scale.
Rigidity theorems on hemispheres in non-positive space forms
Creators: name: Huang, Lan-Hsuan
name: Wu, Damin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the curvature condition which uniquely characterizes the hemisphere. In particular, we prove the Min-Oo conjecture for hypersurfaces in Euclidean space and hyperbolic space.
description: 20 pages. Typos corrected and added in proof. Appeared in Comm. Anal. Geom
Moment Varieties for Mixtures of Products
Creators: name: Alexandr, Yulia
name: Kileel, Joe
name: Sturmfels, Bernd
Publisher: name: arXiv
Year: 2023
Subjects: subject: Algebraic Geometry (math.AG)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The setting of this article is nonparametric algebraic statistics. We study moment varieties of conditionally independent mixture distributions on $\mathbb{R}^n$. These are the secant varieties of toric varieties that express independence in terms of univariate moments. Our results revolve around the dimensions and defining polynomials of these varieties.
description: 8 pages
Workshop: Sexuelle Selbstbestimmung - gut vernetzt! Chancen und Herausforderungen trägerübergreifender Vernetzung
Creators: name: Nitsche, Andreas
name: Ursprung, Lena
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: Präsentation
Abschlusstagung
ReWiKs
Fortbildungen
Freiraum-Gruppen
Sexuelle Selbstbestimmung
Behinderung
Sexualität
Menschen mit Behinderungen
Menschen mit Lernschwierigkeiten

description: Präsentation, die im Rahmen der Abschlusstagung des ReWiKs-Projektes am 30.11.2023 gezeigt wurde.

Am Beispiel des ReWiKs-Projektes und Ergbenisse aus diesem, werden Chancen und Herausforderungen trägerübergreifender Vernetzung aufgezeigt.
Weak lensing predictions for modified gravities at non-linear scales
Creators: name: Beynon, Emma
name: Bacon, David J.
name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a set of predictions for weak lensing correlation functions in the context of modified gravity models, including a prescription for the impact of the nonlinear power spectrum regime in these models. We consider the DGP and f(R) models, together with dark energy models with the same expansion history. We use the requirement that gravity is close to GR on small scales to estimate the non-linear power for these models. We then calculate weak lensing statistics, showing their behaviour as a function of scale and redshift, and present predictions for measurement accuracy with future lensing surveys, taking into account cosmic variance and galaxy shape noise. We demonstrate the improved discriminatory power of weak lensing for testing modified gravities once the nonlinear power spectrum contribution has been included. We also examine the ability of future lensing surveys to constrain a parameterisation of the non-linear power spectrum, including sensitivity to the growth factor.
description: 10 pages, 9 figures, 6 tables; v2: updated references; v3: accepted for publication in MNRAS
From Classification Accuracy to Proper Scoring Rules: Elicitability of Probabilistic Top List Predictions
Creators: name: Resin, Johannes
Publisher: name: arXiv
Year: 2023
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In the face of uncertainty, the need for probabilistic assessments has long been recognized in the literature on forecasting. In classification, however, comparative evaluation of classifiers often focuses on predictions specifying a single class through the use of simple accuracy measures, which disregard any probabilistic uncertainty quantification. I propose probabilistic top lists as a novel type of prediction in classification, which bridges the gap between single-class predictions and predictive distributions. The probabilistic top list functional is elicitable through the use of strictly consistent evaluation metrics. The proposed evaluation metrics are based on symmetric proper scoring rules and admit comparison of various types of predictions ranging from single-class point predictions to fully specified predictive distributions. The Brier score yields a metric that is particularly well suited for this kind of comparison.
Fast Neutrino Flavor Conversion in Core-Collapse Supernovae: A Parametric Study in 1D Models
Creators: name: Ehring, Jakob
name: Abbar, Sajad
name: Janka, Hans-Thomas
name: Raffelt, Georg
name: Tamborra, Irene
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore the impact of small-scale flavor conversions of neutrinos, the so-called fast flavor conversions (FFCs), on the dynamical evolution and neutrino emission of core-collapse supernovae (CCSNe). In order to do that, we implement FFCs in the spherically symmetric (1D) CCSN simulations of a 20 solar-mass progenitor model parametrically, assuming that FFCs happen at densities lower than a systematically varied threshold value and lead to an immediate flavor equilibrium consistent with lepton number conservation. We find that besides hardening the electron neutrino and antineutrino spectra, which helps the expansion of the shock by enhanced postshock heating, FFCs can cause significant, nontrivial modifications of the energy transport in the SN environment via increasing the heavy-lepton neutrino luminosities. In our non-exploding models this results in extra cooling of the layers around the neutrinospheres, which triggers a faster contraction of the proto-neutron star and hence, in our 1D models, hampers the CCSN explosion. Although our study is limited by the 1D nature of our simulations, it provides valuable insights into how neutrino flavor conversions in the deepest CCSN regions can impact the neutrino release and the corresponding response of the stellar medium.
description: 20 pages, 10 figures, slightly extended version, accepted by PRD
Universal Fluctuations of Growing Interfaces: Evidence in Turbulent Liquid Crystals
Creators: name: Takeuchi, Kazumasa A.
name: Sano, Masaki
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate growing interfaces of topological-defect turbulence in the electroconvection of nematic liquid crystals. The interfaces exhibit self-affine roughening characterized by both spatial and temporal scaling laws of the Kardar-Parisi-Zhang theory in 1+1 dimensions. Moreover, we reveal that the distribution and the two-point correlation of the interface fluctuations are universal ones governed by the largest eigenvalue of random matrices. This provides quantitative experimental evidence of the universality prescribing detailed information of scale-invariant fluctuations.
description: 4 pages, 5 figures; minor changes made; note added
A Deterministic Proof of the Birch and Swinnerton-Dyer Conjecture via Rank-Energy Identity
Creators: name: Hill, Clayton
Publisher: name: Zenodo
Year: 2025

description: This document presents a complete and unconditional resolution of the Birch and Swinnerton-Dyer Conjecture for all elliptic curves over the rational numbers. Introducing a novel construct known as the Rank–Energy Functional, the manuscript bridges the analytic behavior of the L-function with the arithmetic structure of elliptic curves. The proof integrates known results from Gross–Zagier, Zhang, Kolyvagin, and modular form theory, ultimately verifying the BSD identity by contradiction and establishing the finiteness of the Tate–Shafarevich group. This work aims to provide a foundational advancement in number theory and arithmetic geometry, with far-reaching implications for cryptography, mathematical physics, and computational theory.
Additional file 1 of Temporal cross-correlations between air pollutants and outpatient visits for respiratory and circulatory system diseases in Fuzhou, China
Creators: name: Jiang, Yu
name: Chen, Jiedong
name: Wu, Chuancheng
name: Lin, Xin
name: Zhou, Quan
name: Ji, Shumi
name: Yang, Shuangfeng
name: Zhang, Xiaoyang
name: Liu, Baoying
Publisher: name: figshare
Year: 2020
Subjects: Neuroscience
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Additional file 1 Table S1-S4. Percentage changes with 95% CIs for outpatient visits for respiratory and circulatory diseases according to air pollutants in different models.Table S5. Percentage changes with 95% CIs for outpatient visits for respiratory and circulatory diseases according to air pollutants in the model with ozone exceeding 100 μg/m3. Fig. S1. Percentage changes with 95% CIs for outpatient visits for circulatory diseases under conditions over 30 °C and under 30 °C (A). The Wilcoxon paired test was used to compared the ERs for circulatory outpatient visits between conditions over and under 30 °C (B).
Efficiently transforming from values of a function on a sparse grid to basis coefficients
Creators: name: Wodraszka, Robert
name: Carrington, Tucker
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In many contexts it is necessary to determine coefficients of a basis expansion of a function ${f}\left(x_1, \ldots, x_D\right) $ from values of the function at points on a sparse grid. Knowing the coefficients, one has an interpolant or a surrogate. For example, such coefficients are used in uncertainty quantification. In this chapter, we present an efficient method for computing the coefficients. It uses basis functions that, like the familiar piecewise linear hierarchical functions, are zero at points in previous levels. They are linear combinations of any, e.g. global, nested basis functions $φ_{i_k}^{\left(k\right)}\left(x_k\right)$. Most importantly, the transformation from function values to basis coefficients is done, exploiting the nesting, by evaluating sums sequentially. When the number of functions in level $\ell_k$ equals $\ell_k$ (i.e. when the level index is increased by one, only one point (function) is added) and the basis function indices satisfy ${\left\lVert\mathbf{i}-\mathbf{1}\right\lVert_1 \le b}$, the cost of the transformation scales as $\mathcal{O}\left(D \left[\frac{b}{D+1} + 1\right] N_\mathrm{sparse}\right)$, where $N_\mathrm{sparse}$ is the number of points on the sparse grid. We compare the cost of doing the transformation with sequential sums to the cost of other methods in the literature.