cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Toward a Theory of Airline Pricing
Creators: name: Tacker, Thomas
name: Fleming, Kenneth
name: Ghobrial, Atef
name: Tacker, Thomas
name: Fleming, Kenneth
name: Ghobrial, Atef
Publisher: name: Unknown
Year: 1994
Subjects: Public Economics

description: Presented at the 36th Transportation Research Forum meeting, Nov. 3-5, 1994, Daytona, Beach, FL
Better document-level natural language understanding through data-driven applications of discourse theories
Creators: name: Huber, Patrick
Publisher: name: University of British Columbia
Year: 2022

description: A discourse constitutes a locally and globally coherent text in which words, clauses and sentences are not solely a sequence of independent statements, but follow a hidden structure, encoding the author's underlying communicative goal(s). As such, the meaning of a discourse as a whole goes beyond the meaning of its individual parts, guided by the latent semantic and pragmatic relationships holding between parts of the document. Clearly falling into the area of Natural Language Understanding (NLU), discourse analysis augments textual inputs with structured representations following linguistic formalisms and frameworks. Annotating documents following these elaborate formalisms has led to the computationally inspired research area of discourse parsing, aiming to generate robust and general discourse annotations for arbitrary documents through automated approaches. With computational discourse parsers having great success at inferring valuable structures and supporting prominent real-world tasks such as sentiment analysis, text classification, and summarization, discourse parsing has been established as a valuable source of structured information. However, a significant limitation preventing the broader application of discourse-inspired approaches, especially in the context of modern deep-learning models, is the lack of available gold-standard data, caused by the tedious and expensive human annotation process. To overcome the prevalent data sparsity issue in the areas of discourse analysis and discourse parsing, it is imperative to find new methods to generate large-scale and high-quality discourse annotations, not relying on the restrictive human annotation process. Along these lines, we present a set of novel computational approaches to (partially) overcome the data sparsity issue by proposing distantly and self-supervised methods to automatically generate large-scale, high-quality discourse annotations in a data-driven manner. In this thesis, we provide detailed insights into our technical contributions and diverse evaluations. Specifically, we show the competitive and complementary nature of our discourse inference approaches to human-annotated discourse information, partially outperforming gold-standard discourse structures on the important task of "inter-domain" discourse parsing. We further elaborate on our generated discourse annotations in regard to their ability to support linguistic theories and downstream tasks, finding that they have direct applications in linguistics and Natural Language Processing (NLP).
Avoiding dynastic, assortative mating, and population stratification biases in Mendelian randomization through within-family analyses
Creators: name: Heilbron, Karl
name: Howe, Laura D.
name: Hughes, Amanda
name: Boomsma, Dorret I.
name: Hopper, John
name: Pedersen, Nancy L.
name: Reynolds, Chandra A.
name: Tucker-Drob, Elliot M.
name: Howe, Laurence
name: Li, Shuai
name: Auton, Adam
name: Windmeijer, Frank
name: Chen, Wei-Min
name: Bjørngaard, Johan Håkon
name: Hveem, Kristian
name: Davey Smith, George
name: Åsvold, Bjørn Olav
name: Brumpton, Ben
name: Sanderson, Eleanor
name: Hartwig, Fernando Pires
name: Harrison, Sean
name: Vie, Gunnhild Åberge
name: Cho, Yoonsu
name: Havdahl, Alexandra
name: Neale, Michael
name: Nivard, Michel G.
name: Grotzinger, Andrew
name: Morris, Tim
name: Willer, Cristen
name: Evans, David M.
name: Kaprio, Jaakko
name: Smith, George Davey
name: Hemani, Gibran
name: Davies, Neil M.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Article
/631/208
/692/308
/692/308/174
/692/308/2056
/692/499
/45/43
article

description: Abstract: Estimates from Mendelian randomization studies of unrelated individuals can be biased due to uncontrolled confounding from familial effects. Here we describe methods for within-family Mendelian randomization analyses and use simulation studies to show that family-based analyses can reduce such biases. We illustrate empirically how familial effects can affect estimates using data from 61,008 siblings from the Nord-Trøndelag Health Study and UK Biobank and replicated our findings using 222,368 siblings from 23andMe. Both Mendelian randomization estimates using unrelated individuals and within family methods reproduced established effects of lower BMI reducing risk of diabetes and high blood pressure. However, while Mendelian randomization estimates from samples of unrelated individuals suggested that taller height and lower BMI increase educational attainment, these effects were strongly attenuated in within-family Mendelian randomization analyses. Our findings indicate the necessity of controlling for population structure and familial effects in Mendelian randomization studies.
I primi secoli della storia di Firenze: a proposito dei volumi: Firenze nell’età romanica di Enrico Faini; Popolani e magnati di Silvia Diacciati; Il Comune di Firenze tra Due e Trecento di Piero Gualtieri
Creators: name: Cammarosano, Paolo
name: Pinto, Giuliano
name: Zorzi, Andrea
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Discussione sui volumi Firenze nell’età romanica di Enrico Faini; Popolani e magnati di Silvia Diacciati; Il Comune di Firenze tra Due e Trecento di Piero Gualtieri.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Slowdown of Antarctic Bottom Water export driven by climatic wind and sea-ice changes
Creators: name: Zhou, Shenjie
Publisher: name: Zenodo
Year: 2023

description: This presentation was given by Shenjie Zhou during his Climate Coffee talk on 7 December 2023 online from 10:00 - 10:40am entitled, "Slowdown of Antarctic Bottom Water export driven by climatic wind and sea-ice changes". 
You can find the recording of Shenjie's Climate Coffee talk here.
I lavori di "restauro" e rifunzionalizzazione di Palazzo Vecchio (1865) in una relazione di Carlo Falconieri
Creators: name: Ferretti, Emanuela
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Carlo Falconieri ha diretto i lavori di sistemazione di Palazzo Vecchio in vista dell’insediamento della Camera dei Deputati e del Ministero degli Esteri (1865). Si è trattato di una campagna di opere molto consistenti, ben nota alla storiografia che ne ha evidenziato – attraverso la documentazione prodotta dallo stesso Falconieri - alcuni aspetti significativi, soprattutto in relazione a interventi che hanno interessato particolari settori della grande fabbrica. Si presenta qui una trascrizione integrale della relazione dell’ingegner Falconieri redatta al termine dei lavori e conservata all’Archivio Centrale dello Stato di Roma. Il documento, che offerto nella sua completezza si presta a nuove letture e interpretazioni, è preceduto da una breve introduzione che intende delineare per sommi capi le coordinate cronologiche e culturali essenziali per collocare le trasformazioni progettate da Falconieri nel più ampio quadro degli interventi a Palazzo Vecchio, succedutisi senza soluzione di continuità dai primi anni dell’Ottocento fino agli anni venti del Novecento e oltre.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Ab initio derivation of multi-orbital extended Hubbard model for molecular crystals
Creators: name: Tsuchiizu, Masahisa
name: Omori, Yukiko
name: Suzumura, Yoshikazu
name: Bonnet, Marie-Laure
name: Robert, Vincent
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: From configuration interaction (CI) ab initio calculations, we derive an effective two-orbital extended Hubbard model based on the gerade (g) and ungerade (u) molecular orbitals (MOs) of the charge-transfer molecular conductor (TTM-TTP)I_3 and the single-component molecular conductor [Au(tmdt)_2]. First, by focusing on the isolated molecule, we determine the parameters for the model Hamiltonian so as to reproduce the CI Hamiltonian matrix. Next, we extend the analysis to two neighboring molecule pairs in the crystal and we perform similar calculations to evaluate the inter-molecular interactions. From the resulting tight-binding parameters, we analyze the band structure to confirm that two bands overlap and mix in together, supporting the multi-band feature. Furthermore, using a fragment decomposition, we derive the effective model based on the fragment MOs and show that the staking TTM-TTP molecules can be described by the zig-zag two-leg ladder with the inter-molecular transfer integral being larger than the intra-fragment transfer integral within the molecule. The inter-site interactions between the fragments follow a Coulomb law, supporting the fragment decomposition strategy.
description: 16 pages, 8 figures, published version
The 3+1 holographic superconductor with Weyl corrections
Creators: name: Wu, Jian-Pin
name: Cao, Yue
name: Kuang, Xiao-Mei
name: Li, Wei-Jia
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we study $3+1$ holographic superconductors with Weyl corrections. We find that the critical temperature of a superconductor with Weyl corrections increases as we amplify the Weyl coupling parameter $γ$, indicating the condensation will be harder when the parameter $γ$ decreases. We also calculate the conductivity and the ratio of gap frequency over critical temperature $ω_{g}/T_{c}$ numerically for various coupling parameters. We find that the ratio $ω_g/T_c$ becomes larger when the Weyl coupling parameter $γ$ decreases. We also notice that when $γ< 0$ there is an extra spike that appears inside the gap.
description: 16 pages, 7 figures and 1 table, typos corrected and reference added, appendix A added, version to be published in PLB
Integrated genetic and methylomic analyses identify shared biology between autism and autistic traits
Creators: name: Massrali, Aicha
name: Brunel, Helena
name: Hannon, Eilis
name: Wong, Chloe
name: Baron-Cohen, Simon
name: Warrier, Varun
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Research

description: Abstract: Previous studies have identified differences in DNA methylation in autistic individuals compared to neurotypical individuals. Yet, it is unclear if this extends to autistic traits—subclinical manifestation of autism features in the general population. Here, we investigate the association between DNA methylation at birth (cord blood), and scores on the Social and Communication Disorders Checklist (SCDC), a measure of autistic traits, in 701 8-year-olds, by conducting a methylome-wide association study (MWAS). We did not identify significant CpGs associated with SCDC. The most significant CpG site was cg14379490, on chromosome 9 (MWAS beta = − 1.78 ± 0.35, p value = 5.34 × 10−7). Using methylation data for autism in peripheral tissues, we did not identify a significant concordance in effect direction of CpGs with p value < 10−4 in the SCDC MWAS (binomial sign test, p value > 0.5). In contrast, using methylation data for autism from post-mortem brain tissues, we identify a significant concordance in effect direction of CpGs with a p value < 10−4 in the SCDC MWAS (binomial sign test, p value = 0.004). Supporting this, we observe an enrichment for genes that are dysregulated in the post-mortem autism brain (one-sided Wilcoxon rank-sum test, p value = 6.22 × 10−5). Finally, integrating genome-wide association study (GWAS) data for autism (n = 46,350) with mQTL maps from cord-blood (n = 771), we demonstrate that mQTLs of CpGs associated with SCDC scores at p value thresholds of 0.01 and 0.005 are significantly shifted toward lower p values in the GWAS for autism (p < 5 × 10−3). We provide additional support for this using a GWAS of SCDC, and demonstrate a lack of enrichment in a GWAS of Alzheimer’s disease. Our results highlight the shared cross-tissue methylation architecture of autism and autistic traits, and demonstrate that mQTLs associated with differences in DNA methylation associated with childhood autistic traits are enriched for common genetic variants associated with autism and autistic traits.
Adone Zoli, il mondo cattolico e l’antifascismo fiorentino
Creators: name: Sciré, Giambattista
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Il saggio analizza la figura di Adone Zoli, personalità di spicco del mondo cattolico e dirigente democristiano, nel suo rapporto con l’antifascismo fiorentino, dagli anni Trenta al periodo della Resistenza, della Liberazione e all’immediato secondo dopoguerra. I nuovi documenti qui presentati mettono in luce l’importanza della sua attività politica dentro la Dc fiorentina, il legame tra la Dc locale e la curia fiorentina, le sue relazioni con gli altri membri del Comitato Toscano di Liberazione Nazionale. Ne emerge una figura molto complessa divisa tra una forte fede cristiana e ideali antifascisti profondamente radicati.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Giovanni Degli Alessandri: i primi anni del direttorato agli Uffizi fra nuovi e vecchi ruoli
Creators: name: Pasquinelli, Chiara
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: La figura di Giovanni Degli Alessandri (1765-1830), presidente dell’Accademia di Belle Arti di Firenze e direttore degli Uffizi tra gli anni napoleonici e la Restaurazione di Ferdinando III d’Asburgo-Lorena, è quella di un personaggio chiave nella politica artistica fiorentina, e toscana più in generale. Nel saggio si esaminano i primi anni del suo direttorato alla Galleria, i rapporti con Antonio Canova, il suo ruolo all’interno dell’entourage di Elisa Baciocchi Bonaparte, oltre a considerare alcuni spunti legati al rinnovamento degli Uffizi, nonché la delicata vicenda del passaggio in città di Dominique-Vivant Denon, direttore del Louvre. L’obbiettivo è quello di introdurre elementi di approfondimento relativamente a una figura molto nota ma poco studiata.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Le musiche di Palazzo Pitti al tempo dei granduchi Asburgo-Lorena. Storia della collezione musicale granducale
Creators: name: Gitto, Stefania
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Le musiche della biblioteca dei granduchi Asburgo-Lorena furono raccolte e custodite presso Palazzo Pitti fino al 1862, anno nel quale vennero trasferite presso il Regio Istituto di Musica, oggi Conservatorio Luigi Cherubini di Firenze. Il fondo Pitti, restaurato e riordinato negli anni successivi l’alluvione del 1966, è stato nel 2010 oggetto di catalogazione informatica svelando, dopo un secolo e mezzo di oblio, più di 6.000 opere musicali di provenienza fiorentina e in gran parte austriaca, a testimonianza del forte legame che univa Firenze e Vienna. L’analisi delle musiche manoscritte e a stampa, accompagnata dal ritrovamento di antichi inventari e dallo studio di fonti archivistiche, ha permesso la ricostruzione delle vicende della collezione palatina ed ha contribuito ad una maggiore conoscenza della pratica musicale alla corte fiorentina e del contesto culturale nella Toscana pre-unitaria.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Il Badalone di Filippo Brunelleschi e l’iconografia del «navigium» tra Guido da Vigevano e Leonardo da Vinci. In appendice: Il privilegio del Badalone (trascrizione e note storico-archivistiche)
Creators: name: Nanni, Romano
name: Vestri, Veronica
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Nel giugno 1421 le autorità di Firenze concessero a Filippo Brunelleschi un privilegium per sfruttare i diritti di uso di un nuovo tipo di imbarcazione che il grande architetto aveva inventato, il badalone. Varie ipotesi sono state fatte riguardo le caratteristiche di questo naviglio, ma determinare con esattezza cosa sia stato il badalone non è facile, a causa della mancanza di documentazione eloquentemente descrittiva. Qui si avanzano alcune congetture intorno al suo uso e caratteristiche. Da una parte una rilettura degli archivi dell’Opera del Duomo di Firenze, particolarmente dei documenti relazionabili all’impresa del Brunelleschi e alla navigazione dell’Arno nelle diverse stagioni dell’anno; e, dall’altra parte, un’indagine sulla tradizione iconografica della navigazione dal Medio Evo al primo Rinascimento, ci consentono di identificare meglio i problemi a cui l’invenzione brunelleschiana intendeva rispondere, suggerendo altre ipotesi sull’identità del badalone.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Asymptotic behaviour of the number of the Eulerian circuits
Creators: name: Isaev, Mikhail
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We determine the asymptotic behaviour of the number of the Eulerian circuits in undirected simple graphs with large algebraic connectivity (the second-smallest eigenvalue of the Laplacian matrix). We also prove some new properties of the Laplacian matrix.
A Multiple Discriminant Analysis of Vessel Accidents
Creators: name: Rucks, Conway T.
name: Le Blanc, Louis A.
name: Rucks, Conway T.
name: Le Blanc, Louis A.
Publisher: name: Unknown
Year: 1994
Subjects: Public Economics

description: Presented at the 36th Transportation Research Forum meeting, Nov. 3-5, 1994, Daytona, Beach, FL
Some results on excited hadrons in 2-flavor QCD
Creators: name: Engel, Georg P.
name: Lang, C. B.
name: Limmer, Markus
name: Mohler, Daniel
name: Schäfer, Andreas
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Results of hadron spectroscopy with two dynamical mass-degenerate chirally improved quarks are presented. Three ensembles with pion masses of 322(5), 470(4) and 525(7) MeV, lattices of size 16^3 \times 32, and lattice spacings close to 0.15 fm are investigated. We discuss the possible appearance of scattering states, considering masses and eigenvectors. Partially quenched results in the scalar channel suggest the presence of a 2-particle state, however, in most channels we cannot identify them. Where available, we compare to results from quenched simulations using the same action.
description: 7 pages, 9 figures, 1 table, talk given at the XXVIII International Symposium on Lattice Field Theory (Lattice 2010), June 14-19,2010, Villasimius, Sardinia, Italy
Setting up the Epson Expression 12000XL for root scanning
Creators: name: York, Larry
Publisher: name: Zenodo
Year: 2023

description: For RhizoVision Explorer, we recommend imaging equipment that uses a backlight to capture a silhouette of the roots. The Epson Expression 12000XL Photo Scanner with transparency unit is a large format scanner with an approximately 30 cm x 40 cm scan area and is ideal for this use case. This document goes over how to set it up for root scanning. If you use this guide to set up a scanner, scan roots, and report measurements in presentations or publications, please cite this repository. V2: Updated the 12000XL scanner name from Perfection to Expression
Fluctuation-dissipation theorem for chiral systems in non-equilibrium steady states
Creators: name: Wang, Chenjie
name: Feldman, D. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a three-terminal system with a chiral edge channel connecting the source and drain terminals. Charge can tunnel between the chiral edge and a third terminal. The third terminal is maintained at a different temperature and voltage than the source and drain. We prove a general relation for the current noises detected in the drain and third terminal. It has the same structure as an equilibrium fluctuation-dissipation relation with the nonlinear response in place of the linear conductance. The result applies to a general chiral system and can be useful for detecting "upstream" modes on quantum Hall edges.
description: detailed proof
The U(1) Lattice Gauge Theory Universally Connects All Classical Models with Continuous Variables, Including Background Gravity
Creators: name: Xu, Ying
name: Cuevas, Gemma De las
name: Dür, Wolfgang
name: Briegel, Hans J.
name: Martin-Delgado, Miguel Angel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We show that the partition function of many classical models with continuous degrees of freedom, e.g. abelian lattice gauge theories and statistical mechanical models, can be written as the partition function of an (enlarged) four-dimensional lattice gauge theory (LGT) with gauge group U(1). This result is very general that it includes models in different dimensions with different symmetries. In particular, we show that a U(1) LGT defined in a curved spacetime can be mapped to a U(1) LGT with a flat background metric. The result is achieved by expressing the U(1) LGT partition function as an inner product between two quantum states.
description: Published version, 31 pages, 12 figures; references updated
Heterotic E6 GUTs and Partition Functions
Creators: name: Ito, Motoharu
name: Kuwakino, Shogo
name: Maekawa, Nobuhiro
name: Moriyama, Sanefumi
name: Takahashi, Keijiro
name: Takei, Kazuaki
name: Teraguchi, Shunsuke
name: Yamashita, Toshifumi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The E6 grand unified theory is an attractive candidate intermediate theory between the standard model and string theory. However, only one E6 grand unified model with three generations and at least one adjoint Higgs field has been derived from string theory in the literature, and this model is phenomenologically unsatisfactory. Recently, in arXiv:1012.1690, we have constructed two new such E6 grand unified models in heterotic asymmetric orbifolds. Although our new models themselves cannot resolve the unsatisfactory point in the previous model, our discovery raises hopes that one can construct many other such models in this framework and find better models. Here, by giving partition functions explicitly, we explain the details of our construction. Utilizing the lattice engineering technique and the diagonal embedding method, we can construct models systematically. We hope that these techniques and the details of our construction will lead to more phenomenologically desirable models.
description: 42 pages, 2 figures, v2: text rearranged, version to appear in JHEP
Magnetic-Field-Independent Ultrasonic Dispersions in the Magnetically Robust Heavy Fermion System SmOs4Sb12
Creators: name: Yanagisawa, Tatsuya
name: Saito, Hitoshi
name: Hidaka, Hiroyuki
name: Amitsuka, Hiroshi
name: Araki, Koji
name: Akatsu, Mitsuhiro
name: Nemoto, Yuichi
name: Goto, Terutaka
name: Ho, Pei-Chun
name: Baumbach, Ryan E.
name: Maple, M. Brian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Elastic properties of the filled skutterudite compound SmOs$_4$Sb$_{12}$ have been investigated by ultrasonic measurements. The elastic constant $C_{11}(ω)$ shows two ultrasonic dispersions at $\sim$15 K and $\sim$53 K for frequencies $ω$ between 33 and 316 MHz, which follow a Debye-type formula with Arrhenius-type temperature-dependent relaxation times, and remain unchanged even with applied magnetic fields up to 10 T. The corresponding activation energies were estimated to be $E_2$ = 105 K and $E_1$ = 409 K, respectively. The latter, $E_1$, is the highest value reported so far in the Sb-based filled skutterudites. The presence of magnetically robust ultrasonic dispersions in SmOs$_4$Sb$_{12}$ implies a possibility that an emergence of a magnetically insensitive heavy fermion state in this system is associated with a novel local charge degree of freedom which causes the ultrasonic dispersion.
description: 5 pages, 4 figures
From topological insulators to superconductors and Confinement
Creators: name: Diamantini, M. Cristina
name: Sodano, Pasquale
name: Trugenberger, Carlo A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Topological matter in 3D is characterized by the presence of a topological BF term in its long-distance effective action. We show that, in 3D, there is another marginal term that must be added to the action in order to fully determine the physical content of the model. The quantum phase structure is governed by three parameters that drive the condensation of topological defects: the BF coupling, the electric permittivity and the magnetic permeability of the material. For intermediate levels of electric permittivity and magnetic permeability the material is a topological insulator. We predict, however, new states of matter when these parameters cross critical values: a topological superconductor when electric permittivity is increased and magnetic permeability is lowered and a charge confinement phase in the opposite case of low electric permittivity and high magnetic permeability. Synthetic topological matter may be fabricated as 3D arrays of Josephson junctions.
description: 5 pages, no figures, few references added, typos corrected and few comments added
Rescattering effects in eta {\to} 3pi decays
Creators: name: Schneider, Sebastian P.
name: Kubis, Bastian
name: Ditsche, Christoph
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The isospin-breaking decay eta {\to} 3pi is an ideal tool to extract information on light quark mass ratios from experiment. For a precise determination, however, a detailed description of the Dalitz plot distribution is necessary. In that respect, in particular the slope parameter alpha of the neutral decay channel causes some concern, since the one-loop prediction from chiral perturbation theory misses the experimental value substantially. We use the modified non-relativistic effective field-theory, a dedicated framework to analyze final-state interactions beyond one loop including isospin-breaking corrections, to extract charged and neutral Dalitz plot parameters. Matching to chiral perturbation theory at next-to-leading order, we find alpha = -0.025 +- 0.005, in marginal agreement with experimental findings. We derive a relation between charged and neutral decay parameters that points towards a significant tension between the most recent KLOE measurements of these observables.
description: 48 pages, 5 figures; appendix C added, version published in JHEP
Robust recovery of multiple subspaces by geometric l_p minimization
Creators: name: Lerman, Gilad
name: Zhang, Teng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We assume i.i.d. data sampled from a mixture distribution with K components along fixed d-dimensional linear subspaces and an additional outlier component. For p>0, we study the simultaneous recovery of the K fixed subspaces by minimizing the l_p-averaged distances of the sampled data points from any K subspaces. Under some conditions, we show that if $01 and p>1, then the underlying subspaces cannot be recovered or even nearly recovered by l_p minimization. The results of this paper partially explain the successes and failures of the basic approach of l_p energy minimization for modeling data by multiple subspaces.
description: Published in at http://dx.doi.org/10.1214/11-AOS914 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Charmless Hadronic B Decays into a Tensor Meson
Creators: name: Cheng, Hai-Yang
name: Yang, Kwei-Chou
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Two-body charmless hadronic B decays involving a tensor meson in the final state are studied within the framework of QCD factorization (QCDF). Due to the G-parity of the tensor meson, both the chiral-even and chiral-odd two-parton light-cone distribution amplitudes of the tensor meson are antisymmetric under the interchange of momentum fractions of the quark and anti-quark in the SU(3) limit. Our main results are: (i) In the naive factorization approach, the decays such as $B^-\to \bar K_2^{*0}π^-$ and $\bar B^0\to K_2^{*-}π^+$ with a tensor meson emitted are prohibited owing to the fact that a tensor meson cannot be created from the local V-A or tensor current. Nevertheless, they receive nonfactorizable contributions in QCDF from vertex, penguin and hard spectator corrections. The experimental observation of $B^-\to \bar K_2^{*0}π^-$ indicates the importance of nonfactorizable effects. (ii) For penguin-dominated $B\to TP$ and $TV$ decays, the predicted rates in naive factorization are usually too small by one to two orders of magnitude. In QCDF, they are enhanced by power corrections from penguin annihilation and nonfactorizable contributions.(iii) The dominant penguin contributions to $B\to K_2^*η^{(')}$ arise from the processes: (a) $b\to ss\bar s\to sη_s$ and (b) $b\to s q\bar q\to q \bar K_2^*$ with $η_q=(u\bar u+d\bar d)/\sqrt{2}$ and $η_s=s\bar s$. The interference, constructive for $K_2^*η'$ and destructive for $K_2^*η$, explains why $Γ(B\to K_2^*η')\ggΓ(B\to K_2^*η)$.
description: 43 pages, 1 figure
Inner approximations for polynomial matrix inequalities and robust stability regions
Creators: name: Henrion, Didier
name: Lasserre, Jean Bernard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Following a polynomial approach, many robust fixed-order controller design problems can be formulated as optimization problems whose set of feasible solutions is modelled by parametrized polynomial matrix inequalities (PMI). These feasibility sets are typically nonconvex. Given a parametrized PMI set, we provide a hierarchy of linear matrix inequality (LMI) problems whose optimal solutions generate inner approximations modelled by a single polynomial sublevel set. Those inner approximations converge in a strong analytic sense to the nonconvex original feasible set, with asymptotically vanishing conservatism. One may also impose the hierarchy of inner approximations to be nested or convex. In the latter case they do not converge any more to the feasible set, but they can be used in a convex optimization framework at the price of some conservatism. Finally, we show that the specific geometry of nonconvex polynomial stability regions can be exploited to improve convergence of the hierarchy of inner approximations.
description: A mistake is fixed in the proof of Lemma 1. It does not affect the remainder of the paper
I fiorentini all’estero ed il catasto del 1427: frodi, elusioni, ipercorrettismi
Creators: name: Bettarini, Francesco
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Il saggio si propone di indagare l’incidenza delle attività economiche promosse dai cittadini fiorentini residenti all’estero sulla dichiarazione fiscale presentata al catasto del 1427. La ricerca è stata circoscritta ai fiorentini domiciliati sulle coste dell’Adriatico, attingendo alla documentazione conservata negli archivi di Venezia e Dubrovnik. L’analisi delle «portate» viene quindi affrontata attraverso l’esame dei seguenti punti: a) autodichiarazione di possesso di diritti e/o beni in una città straniera; b) beni immobili; c) bilancio dell’attività commerciale o artigianale; d) obbligazioni (creditori e debitori); e) composizione del nucleo familiare. In conclusione, è stato possibile notare come il rispetto della trasparenza patrimoniale richiesta dal catasto fosse maggiore in quei cittadini che avevano un interesse politico e sociale nel mantenere un buon rapporto con le istituzioni della madrepatria.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Lightcone renormalization and quantum quenches in one-dimensional Hubbard models
Creators: name: Enss, Tilman
name: Sirker, Jesko
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Lieb-Robinson bound implies that the unitary time evolution of an operator can be restricted to an effective light cone for any Hamiltonian with short-range interactions. Here we present a very efficient renormalization group algorithm based on this light cone structure to study the time evolution of prepared initial states in the thermodynamic limit in one-dimensional quantum systems. The algorithm does not require translational invariance and allows for an easy implementation of local conservation laws. We use the algorithm to investigate the relaxation dynamics of double occupancies in fermionic Hubbard models as well as a possible thermalization. For the integrable Hubbard model we find a pure power-law decay of the number of doubly occupied sites towards the value in the long-time limit while the decay becomes exponential when adding a nearest neighbor interaction. In accordance with the eigenstate thermalization hypothesis, the long-time limit is reasonably well described by a thermal average. We point out though that such a description naturally requires the use of negative temperatures. Finally, we study a doublon impurity in a Néel background and find that the excess charge and spin spread at different velocities, providing an example of spin-charge separation in a highly excited state.
description: published version
Transient absorption and reshaping of ultrafast XUV light by laser-dressed helium
Creators: name: Gaarde, Mette B.
name: Buth, Christian
name: Tate, Jennifer L.
name: Schafer, Kenneth J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a theoretical study of transient absorption and reshaping of extreme ultraviolet (XUV) pulses by helium atoms dressed with a moderately strong infrared (IR) laser field. We formulate the atomic response using both the frequency-dependent absorption cross section and a time-frequency approach based on the time-dependent dipole induced by the light fields. The latter approach can be used in cases when an ultrafast dressing pulse induces transient effects, and/or when the atom exchanges energy with multiple frequency components of the XUV field. We first characterize the dressed atom response by calculating the frequency-dependent absorption cross section for XUV energies between 20 and 24 eV for several dressing wavelengths between 400 and 2000 nm and intensities up to 10^12 W/cm^2. We find that for dressing wavelengths near 1600 nm, there is an Autler-Townes splitting of the 1s ---> 2p transition that can potentially lead to transparency for absorption of XUV light tuned to this transition. We study the effect of this XUV transparency in a macroscopic helium gas by incorporating the time-frequency approach into a solution of the coupled Maxwell-Schrödinger equations. We find rich temporal reshaping dynamics when a 61 fs XUV pulse resonant with the 1s ---> 2p transition propagates through a helium gas dressed by an 11 fs, 1600 nm laser pulse.
description: 13 pages, 8 figures, 1 table, RevTeX4, revised
Enclavi urbane a Firenze: il caso della famiglia Uberti
Creators: name: Bruttini, Jacopo
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Le recenti ricerche archeologiche eseguite a Palazzo Vecchio hanno permesso di riportare alla luce il teatro romano di Firenze, che rimase visibile e riconoscibile nel panorama urbano della città fino al XIII sec. È noto come nelle città basso medievali gli antichi monumenti spesso venissero trasformati dalle famiglie aristocratiche in fortezze e sovente fossero dotati di torri o strutture difensive, per divenire in seguito teatri di scontri tra le varie fazioni cittadine. Una volta ricostruito il tessuto urbano dell’area anticamente occupata dal teatro e avendo verificato come la struttura condizionasse profondamente la realtà urbana di Firenze bassomedievale con la sua mole, ci siamo domandati quale fosse la relazione tra le rovine antiche e le proprietà delle potenti famiglie che abitavano l’area sud-est del centro. Il saggio ripercorre quindi la nascita e lo sviluppo dell’enclave degli Uberti in rapporto al contesto sociale, politico e urbanistico di Firenze nel XII secolo.
description: Annali di Storia di Firenze, Vol. 6 (2011)
Projective approach to the entanglement entropy of 1-$d$ fermions
Creators: name: Levine, G. C.
name: Friedman, B. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The entanglement entropy of two gapless non-interacting fermion subsystems is computed approximately in a way that avoids the introduction of replicas and a geometric interpretation of the reduced density matrix. We exploit the similarity between the Schmidt basis wavefunction and superfluid BCS wavefunction and compute the entropy using the BCS approximation. Within this analogy, the Cooper pairs are particle-hole pairs straddling the boundary and the effective interaction between them is induced by the projection of the Hilbert space onto the incomplete Schmidt basis. The resulting singular interaction may be thought of as "lifting" the degeneracy of the single particle distribution function. For two coupled fermion systems of linear size $L$, we solve the BCS gap equation approximately to find the entropy $S \approx (w^2/t^2)\log{L}$ where $w$ is the hopping amplitude at the boundary of the subsystem and $2t$ is the bandwidth. We further interpret this result based upon the relationship between entanglement spectrum, entropy and number fluctuations.
description: 10 pages, 6 figures; added discussion section; accepted Phys. Rev. B
Application of macromolecular crowding in gingival fibroblast cultures
Creators: name: Ramalingam, Rajesvaran
Publisher: name: University of British Columbia
Year: 2022

description: Macromolecular crowding (MMC) supplies synthetic polymeric crowders into cell culture media to better mimic macromolecular concentrations found in tissues. Their use may improve cell culture models for research and provide tools for regenerative therapy. We hypothesized that compared to traditional culture methods (nMMC), MMC can produce improved cultures and cell-derived matrices (CDMs) from cultured human gingival fibroblasts, a cell type associated with fast and scarless wound healing. Our specific aims were to compare fibroblast cultures generated with or without MMC, develop an improved decellularization method to generate CDMs from the cultures, and test if MMC can generate fibroblast cultures under reduced serum concentrations. To this end, fibroblasts were cultured under MMC (medium supplemented with Ficoll 70/400) and nMMC conditions supplemented with 10% or 2% FBS up to 14 days. Accumulation of proteins and specific ECM molecules in cultures and CDMs were studied by Bradford assay and by immunostaining and image analysis. Cell proliferation, morphology, and orientation were studied by image analysis and gene expression was analyzed by RT-qPCR. Results showed that MMC significantly reduced cell growth, but increased accumulation of collagen I and IV, cellular fibronectin, laminin 1, and tenascin C, while suppressing level of SPARC. Out of 62 genes studied, MMC significantly modulated expression of 20 genes compared to nMMC. Interestingly, MMC suppressed myofibroblast markers and promoted deposition of basement membrane molecules by fibroblasts. Decellularization with a novel method using latrunculin B followed by deoxycholate and DNase treatment produced CDMs that showed efficient removal of cellular elements. Molecular composition of cell cultures under MMC was replicated in CDMs, although decellularization caused some loss of ECM molecules. As expected, culture in low serum reduced cell growth and total protein accumulation. However, abundance of the above ECM molecules relative to cell numbers was significantly higher in MMC cultures and CDMs with 2% compared to 10% FBS. Culture in 2% FBS caused gene expression changes resembling a more profibrotic cell phenotype. Overall, the use of MMC and the novel decellularization technique rendered human gingival fibroblast cultures with distinct gene expression and CDMs with enhanced ECM molecule accumulation.
Development of a Simulation Model for Performance Evaluation of Bus Operation on Urban Transportation Corridor
Creators: name: Agarwal, P.K.
name: Jain, Dr. S.S.
name: Khanna, Dr. S.K.
name: Agarwal, P.K.
name: Jain, Dr. S.S.
name: Khanna, Dr. S.K.
Publisher: name: Unknown
Year: 1994
Subjects: Public Economics

description: Presented at the 36th Transportation Research Forum meeting, Nov. 3-5, 1994, Daytona, Beach, FL
Infrastructure and Philippine Rice Productivity
Creators: name: Ocampo, Frederico R.D.
name: Dunn, James W.
name: Smith, Stephen M.
name: Ocampo, Frederico R.D.
name: Dunn, James W.
name: Smith, Stephen M.
Publisher: name: Unknown
Year: 1994
Subjects: Public Economics

description: Presented at the 36th Transportation Research Forum meeting, Nov. 3-5, 1994, Daytona, Beach, FL
Möglichkeiten und Methoden zur innerbetrieblichen Materialflussoptimierung im Maschinen- und Anlagenbau mit hoher Variantenvielfalt
Creators: name: Wieling, Torge
name: Belger, Christian
name: Kleine-Möllhoff, Peter
name: Jenisch, Robin
name: Kutschera, Frederike
name: Lenz, Oliver
name: Lödige, Maximilian
name: Ruoff, Julian
Publisher: name: Universität Tübingen
Year: 2019
Subjects: subject: Marketing , Management
subject: 330
subject: Materialfluss
subject: Materialflussuntersuchung
subject: Variantenvielfalt
subject: Wertstrommethode
subject: value stream method
subject: variety of versions
subject: material flow analysis
subject: material flow

description: In der Vergangenheit ist der Materialfluss meist mit der Produktion gewachsen. Mit steigender Produktindividualität erhöht sich die Anzahl der zu fertigenden Varianten in der Produktion und somit die Komplexität der Materialflüsse. Im Rahmen dieser Arbeit wurden Möglichkeiten und Methoden zur Aufnahme und Optimierung von Materialflüssen im Zusammenhang mit hoher Variantenvielfalt untersucht.
description: In the past the material flow grew over time with the production. With increasing product individuality, the number of variants to be manufactured increases and hence the complexity of the material flows. Within this publication possibilities and methods for the mapping and optimization of material flows with respect to a large variety of versions has been analysed.
Public Awareness of Novel Technologies: DNA Data Storage as a study case
Creators: name: Pelechova, Lenka
Publisher: name: Zenodo
Year: 2022
Subjects: Responsible Research and Innovation, DNA Data Storage, Public Engagement

description: Public dialogue and engagement are being increasingly recognized in the development of new technologies because they help to create more engaged, inclusive, and trustworthy relationship between institutions, scientists, and the wider public[1],[2]. Moreover, public attitudes to novel technologies are one of the most important factors determining the success of new products and applications. Nevertheless, assessing public perceptions of novel technologies is problematic because they are highly complex, and their implications are not yet fully known. We conducted a study aiming to assesses public attitudes to DNA data storage research, which is currently in development. A small-scale qualitative online survey was conducted to engage with the publics and to assess views on DNA data storage technology. This early engagement survey revealed very low awareness of this developing technology, whilst at the same time, participants showed interest and asked questions relating to social and economic implications. The findings recommend greater interdisciplinary collaborations between social scientists and novel technology developers and encourages qualitative survey as one of the methodological tools for assessing public attitudes. [1] Frewer, L. (2003) Societal Issues and public attitudes towards genetically modified foods, Trends in Food Science &Technology, vol. 14 pp 319 – 332. [2] UKRI (2022) Research and innovation for all: UKRI’s public engagement strategy, online at: https://www.ukri.org/publications/ukri-public-engagement-strategy/
Universality of General $β$-Ensembles
Creators: name: Bourgade, Paul
name: Erdos, Laszlo
name: Yau, Horng-Tzer
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 15B52, 82B44

description: We prove the universality of the $β$-ensembles with convex analytic potentials and for any $β>0$, i.e. we show that the spacing distributions of log-gases at any inverse temperature $β$ coincide with those of the Gaussian $β$-ensembles.
description: Sep 21, 2011: Lemma 3.9 was corrected. Feb 5: Some typos in Lemma 5.9 were corrected
IPBES VA Chapter 2. Literature review for the subsection "From values and valuation to decision-making" (Stage II)
Creators: name: Vatn, Arild
Publisher: name: Zenodo
Year: 2020
Subjects: IPBES
Values Assessment
Chapter 2

description: IPBES VA Chapter 2. Literature review for the subsection “From values and valuation to decision-making” (Stage II) Code: VA_ 2.8_Ch2 Version: 01 (20.OCT.2020) DOI: 10.5281/zenodo.4396350 Description: Identifying “the way in which different worldviews, associated with different types of values have been included in decision-making contexts” is part of Chapter 2 mandate. Subsection 2.3.2.3’s objective is to provide evidence for this issue. Expert knowledge, searches using general concepts and others using key concepts were the methods used to gather evidence for this purpose. This literature review is part of the Stage 2 strategy that Chapter 2 has incorporated to bring different sources of evidence appropriate for each section and subsection, allowing to obtain a broader and deeper database to fulfil the mandate of the Scoping document.
The ‘Ciompi Revolution’ Constructed: Modern Historians and the Nineteenth-Century Paradigm of Revolution
Creators: name: Lantschner, Patrick
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: To this day the Ciompi revolt of 1378 has provoked fierce debate between historians of different political persuasions. This article proposes, however, that liberal, conservative and Marxist historians from the last two centuries and different countries have fundamentally argued within the same paradigm of research which has conditioned their conceptualisation, interpretation and narration of the Ciompi revolt. Ciompi historians have recurred to the same concepts of ‘state’, ‘class’ and ‘revolution’, and their related normative connotations and narrati- ve assumptions. In their analyses of the Ciompi revolt, they thus came to replicate a modern understanding of politics and its correspondent ideological divisions.
description: Annali di Storia di Firenze, Vol. 4 (2009)