cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Game of Same and Different – A framework for analyzing determiner systems
Creators: name: Schaden, Gerhard
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: This paper proposes to extend the Game of Same and Different (introduced by Grønn and Szæbø, 2012), and to transform it into a general framework for reasoning about determiner systems in natural languages. The system is applied to a Latin-like language with a singular- plural system and no articles. It will be shown that the system converges under highly rational agents toward the use of the demonstrative as a definite article, and against the emergence of an indefinite article. The behavior of agents more limited in their rationality is explored, and compared with the diachronic development of definite and indefinite articles. Finally, the underlying assumptions of the model are checked against two Latin texts.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Dimensionality Reduction and Classification feature using Mutual Information applied to Hyperspectral Images : A Filter strategy based algorithm
Creators: name: Sarhrouni, ELkebir
name: Hammouch, Ahmed
name: Aboutajdine, Driss
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.4.7; I.4.8; I.4.9
subject: 68U10, 68R05

description: Hyperspectral images (HIS) classification is a high technical remote sensing tool. The goal is to reproduce a thematic map that will be compared with a reference ground truth map (GT), constructed by expecting the region. The HIS contains more than a hundred bidirectional measures, called bands (or simply images), of the same region. They are taken at juxtaposed frequencies. Unfortunately, some bands contain redundant information, others are affected by the noise, and the high dimensionality of features made the accuracy of classification lower. The problematic is how to find the good bands to classify the pixels of regions. Some methods use Mutual Information (MI) and threshold, to select relevant bands, without treatment of redundancy. Others control and eliminate redundancy by selecting the band top ranking the MI, and if its neighbors have sensibly the same MI with the GT, they will be considered redundant and so discarded. This is the most inconvenient of this method, because this avoids the advantage of hyperspectral images: some precious information can be discarded. In this paper we'll accept the useful redundancy. A band contains useful redundancy if it contributes to produce an estimated reference map that has higher MI with the GT.nTo control redundancy, we introduce a complementary threshold added to last value of MI. This process is a Filter strategy; it gets a better performance of classification accuracy and not expensive, but less preferment than Wrapper strategy.
description: 11 pages, 5 figures, journal paper
Cascade of vestigial orders in two-component superconductors: nematic, ferromagnetic, s-wave charge-4e, and d-wave charge-4e states
Creators: name: Hecker, Matthias
name: Willa, Roland
name: Schmalian, Jörg
name: Fernandes, Rafael M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electronically ordered states that break multiple symmetries can melt in multiple stages, similarly to liquid crystals. In the partially-melted phases, known as vestigial phases, a bilinear made out of combinations of the multiple components of the primary order parameter condenses. Multi-component superconductors are thus natural candidates for vestigial order, since they break both the U(1)-gauge and also time-reversal or lattice symmetries. Here, we use group theory to classify all possible real-valued and complex-valued bilinears of a generic two-component superconductor on a tetragonal or hexagonal lattice. While the more widely investigated real-valued bilinears correspond to vestigial nematic or ferromagnetic order, the little explored complex-valued bilinears correspond to a vestigial charge-$4e$ condensate, which itself can have an underlying $s$-wave, $d_{x^2-y^2}$-wave, or $d_{xy}$-wave symmetry. To properly describe the fluctuating regime of the superconducting Ginzburg-Landau action and thus access these competing vestigial phases, we employ both a large-N and a variational method. We show that while vestigial order can be understood as a weak-coupling effect in the large-N approach, it is akin to a moderate-coupling effect in the variational method. Despite these distinctions, both methods yield similar results in wide regions of the parameter space spanned by the quartic Landau coefficients. Specifically, we find that the nematic and ferromagnetic phases are the leading vestigial instabilities, whereas the various types of charge-$4e$ order are attractive albeit subleading vestigial channels. The only exception is for the hexagonal case, in which the nematic and $s$-wave charge-4e vestigial states are degenerate. We discuss the limitations of our approach, as well as the implications of our results for the realization of exotic charge-4e states in material candidates.
description: 26 pages, 4 figures, 2 tables
On graded presentations of Hecke algebras and their generalizations
Creators: name: Webster, Ben
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper, we define a number of closely related isomorphisms. On one side of these isomorphisms sit a number of of algebras generalizing the Hecke and affine Hecke algebras, which we call the "Hecke family"; on the other, we find generalizations of KLR algebras in finite and affine type A, the "KLR family." We show that these algebras have compatible isomorphisms generalizing those between Hecke and KLR algebras given by Brundan and Kleshchev. This allows us to organize a long list of algebras and categories into a single system, including (affine/cyclotomic) Hecke algebras, (affine/cyclotomic) $q$-Schur algebras, (weighted) KLR algebras, category $\mathcal{O}$ for $\mathfrak{gl}_N$ and for the Cherednik algebras for the groups $\mathbb{Z}/e\mathbb{Z}\wr S_m$, and give graded presentations of all of these objects.
description: 39 pages; version 5: final version, to appear in Algebraic Combinatorics
Rouquier's conjecture and diagrammatic algebra
Creators: name: Webster, Ben
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We prove a conjecture of Rouquier relating the decomposition numbers in category $\mathcal{O}$ for a cyclotomic rational Cherednik algebra to Uglov's canonical basis of a higher level Fock space. Independent proofs of this conjecture have also recently been given by Rouquier, Shan, Varagnolo and Vasserot and by Losev, using different methods. Our approach is to develop two diagrammatic models for this category $\mathcal{O}$; while inspired by geometry, these are purely diagrammatic algebras, which we believe are of some intrinsic interest. In particular, we can quite explicitly describe the representations of the Hecke algebra that are hit by projectives under the $\mathsf{KZ}$-functor from the Cherednik category $\mathcal{O}$ in this case, with an explicit basis. This algebra has a number of beautiful structures including categorifications of many aspects of Fock space. It can be understood quite explicitly using a homogeneous cellular basis which generalizes such a basis given by Hu and Mathas for cyclotomic KLR algebras. Thus, we can transfer results proven in this diagrammatic formalism to category $\mathcal{O}$ for a cyclotomic rational Cherednik algebra, including the connection of decomposition numbers to canonical bases mentioned above, and an action of the affine braid group by derived equivalences between different blocks.
description: 64 pages; numerous TikZ figures, PDF is preferable to DVI. v4: Revision in response to referee's report. Several proofs rewritten, examples and pictures added
Dimensional crossover in layered $f$-electron superlattices
Creators: name: Tada, Yasuhiro
name: Peters, Robert
name: Oshikawa, Masaki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the remarkable experimental realizations of $f$-electron superlattices, e.g. CeIn$_3$/LaIn$_3$- and CeCoIn$_5$/YbCoIn$_5$- superlattices, we analyze the formation of heavy electrons in layered $f$-electron superlattices by means of the dynamical mean field theory. We show that the spectral function exhibits formation of heavy electrons in the entire system below a temperature scale $T_0$. However, in terms of transport, two different coherence temperatures $T_x$ and $T_z$ are identified in the in-plane- and the out-of-plane-resistivity, respectively. Remarkably, we find $T_z < T_x \sim T_0$ due to scatterings between different reduced Brillouin zones. The existence of these two distinct energy scales implies a crossover in the dimensionality of the heavy electrons between two and three dimensions as temperature or layer geometry is tuned. This dimensional crossover would be responsible for the characteristic behaviors in the magnetic and superconducting properties observed in the experiments.
description: 7 pages
Categorified skew Howe duality and comparison of knot homologies
Creators: name: Mackaay, Marco
name: Webster, Ben
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper, we show an isomorphism of homological knot invariants categorifying the Reshetikhin-Turaev invariants for $\mathfrak{sl}_n$. Over the past decade, such invariants have been constructed in a variety of different ways, using matrix factorizations, category $\mathcal{O}$, affine Grassmannians, and diagrammatic categorifications of tensor products. While the definitions of these theories are quite different, there is a key commonality between them which makes it possible to prove that they are all isomorphic: they arise from a skew Howe dual action of $\mathfrak{gl}_\ell$ for some $\ell$. In this paper, we show that the construction of knot homology based on categorifying tensor products (from earlier work of the second author) fits into this framework, and thus agrees with other such homologies, such as Khovanov-Rozansky homology. We accomplish this by categorifying the action of $\mathfrak{gl}_\ell\times \mathfrak{gl}_n$ on $\bigwedge\nolimits^{\!p}(\mathbb{C}^\ell\otimes \mathbb{C}^n)$ using diagrammatic bimodules. In this action, the functors corresponding to $\mathfrak{gl}_\ell$ and $\mathfrak{gl}_n$ are quite different in nature, but they will switch roles under Koszul duality.
description: 62 pages. preliminary version, comments welcome
Eliminating EARLIEST: a general semantics for before and after
Creators: name: Rett, Jessica
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: Despite recent proposals, there are still empirical gaps in the study of the semantics of temporal relations, including the precise truth conditions of before and after constructions. Theoretically, there is disagreement about whether the constructions involve aspectual coercion operators, like EARLIEST, that privilege certain bounds over others (Beaver and Condoravdi, 2003; Condoravdi, 2010); or whether non-veridical interpretations of before constructions are the result of intensionality or semantic underspecification (Krifka, 2010b). In this paper, I focus on the truth conditions of before and after constructions as they are conditioned by different aspectual classes across languages, and propose a reformulation of the semantics of before and after that characterizes them as antonymic in a particular way inspired by the treatment of comparatives in the degree-semantic literature. I argue that the result is a more empirically comprehensive and explanatory theory of relations between ordered plurals in general.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
ǰaqaʔ: A generalized exclamation operator in ʔayʔaǰuθəm
Creators: name: Reisinger, Daniel K. E.
name: Huijsmans, Marianne
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: In this paper, we present a formal analysis of the common and yet not well- understood auxiliary ǰaqaʔ in ʔayʔaǰuθəm (a.k.a. Comox-Sliammon; Central Salish). Based on original fieldwork, we argue that speakers can use ǰaqaʔ not only to express wishes or worries, but also to signal the unexpectedness or predictableness of the denoted proposition. To account for this initially perplexing banquet of meanings, we propose — in the spirit of Grosz (2011, 2014) — that ǰaqaʔ functions as an exclamation operator (EX) that serves to express the speaker’s emotion towards the status of a proposition on a contextually salient scale. As predicted by this approach, the use of ǰaqaʔ can give rise to optatives, adversatives, polar exclamatives, and congruent exclamatives — a novel type of exclamative we discover in the process. A claim that emerges from the analysis is that Grosz’s EX operator, which is covert in German and English, may be realized overtly in other languages.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Detection of a new molecular cloud in the LHAASO J2108+5157 region supporting a hadronic PeVatron scenario
Creators: name: de la Fuente, Eduardo
name: Toledano-Juárez, Iván
name: Kawata, Kazumasa
name: Trinidad, Miguel A.
name: Tafoya, Daniel
name: Sano, Hidetoshi
name: Tokuda, Kazuki
name: Nishimura, Atsushi
name: Onishi, Toshikazu
name: Sako, Takashi
name: Hona, Binita
name: Ohnishi, Munehiro
name: Takita, Masato
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: PeVatrons are the most powerful naturally occurring particle accelerators in the Universe. The identification of counterparts associated to astrophysical objects such as dying massive stars, molecular gas, star-forming regions, and star clusters is essential to clarify the underlying nature of the PeV emission, i.e., hadronic or leptonic. We present $^{12,13}$CO(J=2$\rightarrow$1) observations made with the 1.85~m radio-telescope of the Osaka Prefecture University toward the Cygnus OB7 molecular cloud, which contains the PeVatron candidate LHAASO J2108+5157. We investigate the nature of the sub-PeV (gamma-ray) emission by studying the nucleon density determined from the content of HI and H$_2$, derived from the CO observations. In addition to MML[2017]4607, detected via the observations of the optically thick $^{12}$CO(J=1$\rightarrow$0) emission, we infer the presence of an optically thin molecular cloud, named [FKT-MC]2022, whose angular size is 1.1$\pm$0.2$^{\circ}$. We propose this cloud as a new candidate to produce the sub-PeV emission observed in LHAASO J2108+5157. Considering a distance of 1.7 kpc, we estimate a nucleon (HI+H$_2$) density of 37$\pm$14 cm$^{-3}$, and a total nucleon mass(HI+H$_2$) of 1.5$\pm$0.6$\times$10$^4$ M$_{\odot}$. On the other hand, we confirm that Kronberger 82 is a molecular clump with an angular size of 0.1$^{\circ}$, a nucleon density $\sim$ 10$^3$ cm$^{-3}$, and a mass $\sim$ 10$^3$ M$_{\odot}$. Although Kronberger 82 hosts the physical conditions to produce the observed emission of LHAASO J2108+5157, [FKT-MC]2022 is located closer to it, suggesting that the latter could be the one associated to the sub-PeV emission. Under this scenario, our results favour a hadronic origin for the emission.
description: Accepted for publication in Publications of the Astronomical Society of Japan (PASJ). Accepted on 06-Mar-2023. DOI: https://doi.org/10.1093/pasj/psad018 20 pages, 12 figures, 12 tables
Most, but not more than half, is proportion-dependent and sensitive to individual differences
Creators: name: Ramotowska, Sonia
name: Steinert-Threlkeld, Shane
name: Van Maanen, Leendert
name: Szymanik, Jakub
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: In this study we test individual differences in the meaning representations of two natural language quantifiers – most and more than half – in a novel, purely linguistic task. We operationalized differences in meaning representations as differences in individual thresholds which were estimated using logistic regression. We show that the representation ofmost varies across subjects and its verification depends on proportion. Moreover, the choice of the representation of most affects the verification process. These effects are not present for more than half. The study demonstrates the cognitive differences between most and more than half and individual variation in meaning representations.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Caprella mutica Schurin 1935
Creators: name: Kakkonen, Jenni E.
name: Worsfold, Tim M.
name: Ashelby, Christopher W.
name: Taylor, Andrea
name: Beaton, Katy
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Caprellidae
Caprella
Caprella mutica

description: (8) Caprella mutica Schurin, 1935
Status in U.K. – Non-native.
The “Japanese skeleton shrimp”, Caprella mutica, was first recorded in British waters from Oban, Scotland in July 2000 but it is unknown how long it was present prior to its discovery (Willis et al. 2004). In Europe it has been present since at least 1995 (Platvoet et al. 1995; Ashton et al. 2007) and it is now very widespread along Scottish coasts (Ashton et al. 2007). The first Orkney records were made on mooring lines in 2006 (Ashton 2006) and it has recently been recorded fouling marine renewable energy structures in Orkney (Want et al. 2017). Ship hull fouling or recreational boats were cited by Ashton (2006) as a possible means of introduction to Orkney. Subsequently, it was recorded from the HMS Vanguard navigation buoy in 2008 (J. Kakkonen, pers. obs.) and has been consistently recorded in high abundance from scrape, settlement panel and rapid assessment samples throughout Orkney each year since the start of the programme in 2012.
NMS voucher reference number: NMS.Z.2017.144.63.
description: Published as part of Kakkonen, Jenni E., Worsfold, Tim M., Ashelby, Christopher W., Taylor, Andrea & Beaton, Katy, 2019, The value of regular monitoring and diverse sampling techniques to assess aquatic non-native species: a case study from Orkney, pp. 46-79 in Management of Biological Invasions 10 (1) on page 59, DOI: 10.3391/mbi.2019.10.1.04, http://zenodo.org/record/11969078
Adverbial responses to quantified utterances
Creators: name: Pasquereau, Jérémy
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: This paper establishes a new empirical generalization concerning the interpretation of (Bare) Adverbial Responses (BARs) in English and supplements previous ellipsis-based accounts of BARs (Kramer and Rawlins, 2011) with an analysis taken from an account of polar responses presented in Pasquereau (in press).
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Principal wind turbines for a conditional portfolio approach to wind farms
Creators: name: Lopes, Vitor V.
name: Scholz, Teresa
name: Raischel, Frank
name: Lind, Pedro G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Finance (q-fin.GN)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We introduce a measure for estimating the best risk-return relation of power production in wind farms within a given time-lag, conditioned to the velocity field. The velocity field is represented by a scalar that weighs the influence of the velocity at each wind turbine at present and previous time-steps for the present "state" of the wind field. The scalar measure introduced is a linear combination of the few turbines, that most influence the overall power production. This quantity is then used as the condition for computing a conditional expected return and corresponding risk associated to the future total power output.
description: 9 pages, conference proceedings of "The science of making torque from wind"
Nearest Neighbors Meet Deep Neural Networks for Point Cloud Analysis
Creators: name: Zhang, Renrui
name: Wang, Liuhui
name: Guo, Ziyu
name: Shi, Jianbo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Performances on standard 3D point cloud benchmarks have plateaued, resulting in oversized models and complex network design to make a fractional improvement. We present an alternative to enhance existing deep neural networks without any redesigning or extra parameters, termed as Spatial-Neighbor Adapter (SN-Adapter). Building on any trained 3D network, we utilize its learned encoding capability to extract features of the training dataset and summarize them as prototypical spatial knowledge. For a test point cloud, the SN-Adapter retrieves k nearest neighbors (k-NN) from the pre-constructed spatial prototypes and linearly interpolates the k-NN prediction with that of the original 3D network. By providing complementary characteristics, the proposed SN-Adapter serves as a plug-and-play module to economically improve performance in a non-parametric manner. More importantly, our SN-Adapter can be effectively generalized to various 3D tasks, including shape classification, part segmentation, and 3D object detection, demonstrating its superiority and robustness. We hope our approach could show a new perspective for point cloud analysis and facilitate future research.
description: Accepted by WACV 2023
Knot Complement Problem for L-space $\mathbb{Z} HS^3$
Creators: name: Ravelomanana, Huygens C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M27, 57M25

description: In this paper we look at the knot complement problem for L-space $\mathbb{Z}$-homology spheres. We show that an L-space $\mathbb{Z}$-homology sphere $Y$ cannot be obtained as a non-trivial surgery along a knot $K\subset Y$. As a consequence, we prove that knots in an L-space $\mathbb{Z}$-homology sphere are determined by their complements.
description: The comment after Theorem 1.2 has been corrected, the adjective irreducible has been added. "The Poincare sphere {\Sigma}(2, 3, 5) is the only known irreducible L-space Z-homology sphere apart from S^3."
Conditionals on crutches: Expanding the modal horizon
Creators: name: Paape, Dario
name: Zimmermann, Malte
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: Using truth-value judgment tasks, we investigated the on-line processing of counterfactual conditionals such as If kangaroos had no tails, they would topple over. Face-value plausibility of the counterfactual as well as the complexity of the antecedent were manipulated. Results show that readers’ judgments deviate from face-value plausibility more often when the antecedent is complex, and when the counterfactual is plausible rather than implausible. We interpret our results based on the modal horizon assumption of von Fintel (2001) and argue that they are compatible with a variably strict semantics for counterfactuals (Lewis, 1973). We make use of computational modeling techniques to account for reaction times and truth-value judgments simultaneously, showing that implementing detailed process models deepens our understanding of the cognitive mechanisms triggered by linguistic stimuli.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Highest weights for truncated shifted Yangians and product monomial crystals
Creators: name: Kamnitzer, Joel
name: Tingley, Peter
name: Webster, Ben
name: Weekes, Alex
name: Yacobi, Oded
Publisher: name: arXiv
Year: 2015
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Truncated shifted Yangians are a family of algebras which are natural quantizations of slices in the affine Grassmannian. We study the highest weight representations of these algebras. In particular, we conjecture that the possible highest weights for these algebras are described by product monomial crystals, certain natural subcrystals of Nakajima's monomials. We prove this conjecture in type A. We also place our results in the context of symplectic duality and prove a conjecture of Hikita in this situation.
description: 57 pages
Stellar dynamics in gas: The role of gas damping
Creators: name: Leigh, Nathan W. C.
name: Battisti, Alessandra Mastrobuono
name: Perets, Hagai B.
name: Boeker, Torsten
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper, we consider how gas damping affects the dynamical evolution of gas-embedded star clusters. Using a simple three-component (i.e. one gas and two stellar components) model, we compare the rates of mass segregation due to two-body relaxation, accretion from the interstellar medium, and gas dynamical friction in both the supersonic and subsonic regimes. Using observational data in the literature, we apply our analytic predictions to two different astrophysical environments, namely galactic nuclei and young open star clusters. Our analytic results are then tested using numerical simulations performed with the NBSymple code, modified by an additional deceleration term to model the damping effects of the gas. The results of our simulations are in reasonable agreement with our analytic predictions, and demonstrate that gas damping can significantly accelerate the rate of mass segregation. A stable state of approximate energy equilibrium cannot be achieved in our model if gas damping is present, even if Spitzer's Criterion is satisfied. This instability drives the continued dynamical decoupling and subsequent ejection (and/or collisions) of the more massive population. Unlike two-body relaxation, gas damping causes overall cluster contraction, reducing both the core and half-mass radii. If the cluster is mass segregated (and/or the gas density is highest at the cluster centre), the latter contracts faster than the former, accelerating the rate of core collapse.
description: 17 pages, 8 figures, 1 table; accepted for publication in MNRAS
In vitro toxicity of short vs long chrysotile fibres
Creators: name: Gualtieri, Alessandro
name: Mirata, Serena
name: Almonti, Vanessa
name: Bassi, Anna Maria
name: Meo, Chiara
name: Scarfì, Sonia
name: Zapparoli, Mauro
name: Armeni, Tatiana
name: Cianfruglia, Laura
name: Marzioni, Daniela
name: Fantone, Sonia
name: Tossetta, Giovanni
name: Stipa, Pierluigi
name: Laudadio, Emiliano
name: Sabbatini, Simona
name: Minnelli, Cristina
name: Di Valerio, Silvia
name: Vaiasicca, Salvatore
name: Procopio, Antonio
name: Pugnaloni, Armanda
Publisher: name: Periodico di Mineralogia
Year: 2023

description: Chrysotile is a natural hydrous layer silicate that belongs to the serpentine group. Because of its unique asbestiform shape and outstanding physical-chemical properties, chrysotile is still nowadays the most used commercial mineral fibre in the world. This occurs despite the mineral has been classified as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC). Since the “fibre toxicity paradigm” relies on the fibre size (length L and width W) and biodurability, the present work attempts to shed light on the issue of the toxicity of short vs. long chrysotile fibres by investigating two size-separated batches of chrysotile fibres (L>5 mm and L≤5 mm) of a commercial Russian sample. In parallel, UICC crocidolite and NYAD G wollastonite fibres were used as a positive and a negative carcinogenic standard, respectively. The calculated fibre potential toxicity/pathogenicity index (FPTI) value of the long-fibre chrysotile (2.35) is greater than that of the short-fibre (2.18) predicting a greater potential of toxicity/ pathogenicity of the former. The FTPI value of short-fibre chrysotile is greater than that of wollastonite (1.92-2.12) but lower than that of crocidolite (2.67). The theoretical predictions were complemented with in vitro toxicity tests performed in parallel on four different cell types involved in the toxicity of inhaled mineral fibres: alveolar, endothelial, mesothelial cells and macrophages. The results from the MTT and LDH toxicity and ROS production tests are in line with the FPTI prediction. The negative carcinogenic standard wollastonite displays the lower in vitro toxicity score (0.25), while the short-fibre chrysotile presents a higher score (0.43), followed by the long-fibre chrysotile (0.66) and the positive carcinogenic standard crocidolite (0.67). In conclusion, our in vitro acute toxicity results on chrysotile are in line with the FPTI model predictions, indicating that short chrysotile asbestos fibres should not be assimilated to “innocuous dusts”.
description: Periodico di Mineralogia, Vol. 92 No. 2 (2023)
Geometry and categorification
Creators: name: Webster, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We describe a number of geometric contexts where categorification appears naturally: coherent sheaves, constructible sheaves and sheaves of modules over quantizations. In each case, we discuss how "index formulas" allow us to easily perform categorical calculations, and readily relate classical constructions of geometric representation theory to categorical ones.
description: 23 pages. an expository article to appear in "Perspectives on Categorification."
Categorification of quantum symmetric pairs I
Creators: name: Bao, Huanchen
name: Shan, Peng
name: Wang, Weiqiang
name: Webster, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: Category Theory (math.CT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We categorify a coideal subalgebra of the quantum group of $\mathfrak{sl}_{2r+1}$ by introducing a $2$-category à la Khovanov-Lauda-Rouquier, and show that self-dual indecomposable $1$-morphisms categorify the canonical basis of this algebra. This allows us to define a categorical action of this coideal algebra on the categories of modules over cohomology rings of partial flag varieties and on the BGG category $\mathcal{O}$ of type B/C.
description: final version, to appear in Quantum Topology
Nitrogen-vacancy magnetometry of individual Fe-triazole spin crossover nanorods
Creators: name: Lamichhane, Suvechhya
name: McElveen, Kayleigh A
name: Erickson, Adam
name: Fescenko, Ilja
name: Sun, Shuo
name: Timalsina, Rupak
name: Guo, Yinsheng
name: Liou, Sy-Hwang
name: Lai, Rebecca Y.
name: Laraoui, Abdelghani
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: [Fe(Htrz)2(trz)](BF4) (Fe-triazole) spin crossover molecules show thermal, electrical, and optical switching between high spin (HS) and low spin (LS) states, making them promising candidates for molecular spintronics. The LS and HS transitions originate from the electronic configurations of Fe(II), and are considered to be diamagnetic and paramagnetic respectively. The Fe(II) LS state has six paired electrons in the ground states with no interaction with the magnetic field and a diamagnetic behavior is usually observed. While the bulk magnetic properties of Fe-triazole compounds are widely studied by standard magnetometry techniques their properties at the individual level are missing. Here we use nitrogen vacancy (NV) based magnetometry to study the magnetic properties of the Fe-triazole LS state of nanoparticle clusters and individual nanorods of size varying from 20 to 1000 nm. Scanning electron microscopy (SEM) and Raman spectroscopy are performed to determine the size of the nanoparticles/nanorods and to confirm their respective spin state. The magnetic field patterns produced by the nanoparticles/nanorods are imaged by NV magnetic microscopy as a function of applied magnetic field (up to 350 mT) and correlated with SEM and Raman. We found that in most of the nanorods the LS state is slightly paramagnetic, possibly originating from the surface oxidation and/or the greater Fe(III) presence along the nanorod edges. NV measurements on the Fe-triazole LS state nanoparticle clusters revealed both diamagnetic and paramagnetic behavior. Our results highlight the potential of NV quantum sensors to study the magnetic properties of spin crossover molecules and molecular magnets.
A scalar conditional in Greek: looking for the consequent
Creators: name: Oikonomou, Despina
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: This paper discusses a construction with a conditional interpretation in Greek which differs from “typical” conditionals in interesting ways. I refer to this construction as pu- conditional, since it is always introduced with the particle pu whose semantic contribution is to be analysed. Pu-conditionals only appear with subjunctive mood and they do not combine with a consequent as typical conditionals. Instead, the meaning of the consequent is implied and indicates that if the prejacent holds, a contextually supplied scalar property will hold to a higher degree.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Instabilities of lasers with moderately delayed optical feedback
Creators: name: Wolfrum, Matthias
name: Turaev, Dmitry
Publisher: name: Weierstrass Institute
Year: 2002
Subjects: subject: delay differential equations
subject: bifurcation analysis

description: We Perform a bifurcation analysis of the Lang-Kobayashi system for a laser with delayed optical feedback in the situation of moderate delay times. Using scaling methods, we are able to calculate the primary bifurcations, leading to instability of the stationary lasing state. We classify different types of pulsations and identify a codimension two bifurcation of fold-Hopf interaction type as the organizing centre for the appearance of more complicated dynamics.
Decomposing distributive numerals in ʔayʔaǰuθəm (Comox-Sliammon Salish)
Creators: name: Mellesmoen, Gloria
name: Davis, Henry
name: Matthewson, Lisa
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: In this paper we examine distributive numerals in ʔayʔaǰuθəm (a.k.a. Comox- Sliammon; Central Salish). We first show that unlike in neighbouring St’át’imcets (Northern Interior Salish), ʔayʔaǰuθəm distributive numerals require specifically temporal distribution over sub-events, as opposed to over locations or event participants. We then provide a compositional analysis of the three morphological components of distributive numerals: the numeral itself; diminutive reduplication, which excludes alternatives in the denotation of the numeral; and a pluractional infix, which when applied to a numeral and a predicate of events yields temporally distributed sub-events, where the number of participants in each sub-event is given by the numeral. Finally, we point out that though our account handles core cases of distributed numerals, their syntactic distribution is extremely broad, mirroring precisely that of bare numerals: this causes non-trivial problems for compositionality.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Representation theory of the cyclotomic Cherednik algebra via the Dunkl-Opdam subalgebra
Creators: name: Webster, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We give an alternate presentation of the cyclotomic rational Cherednik algebra, which has the useful feature of compatibility with the Opdam-Dunkl subalgebra. This presentation has a diagrammatic flavor, and it provides a simple explanation of several surprising facts about this algebra. It allows direct proof of the connection of category $\mathcal{O}$ to weighted KLR algebras, allows us to classify the simple Dunkl-Opdam modules over the Cherednik algebra and provides an algebraic construction of the KZ functor. Furthermore, one of prime motivations for considering this approach is to provide a better framework for connecting Cherednik algebras to Coulomb branches of 3-d gauge theories.
description: 30 pages. best viewed in PDF. v4: final version for publication
Clustering, host halos and environment of z$\sim$2 galaxies as a function of their physical properties
Creators: name: Bethermin, Matthieu
name: Kilbinger, Martin
name: Daddi, Emanuele
name: Gabor, Jared
name: Finoguenov, Alexis
name: McCracken, Henry
name: Wolk, Melody
name: Aussel, Herve
name: Strazzulo, Veronica
name: Floc'h, Emeric Le
name: Gobat, Raphael
name: Rodighiero, Giulia
name: Dickinson, Mark
name: Wang, Lingyu
name: Lutz, Dieter
name: Heinis, Sebastien
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using a sample of 25683 star-forming and 2821 passive galaxies at $z\sim2$, selected in the COSMOS field following the BzK color criterion, we study the hosting halo mass and environment of galaxies as a function of their physical properties. Spitzer and Herschel provide accurate SFR estimates for starburst galaxies. We measure the auto- and cross-correlation functions of various galaxy sub-samples and infer the properties of their hosting halos using both an HOD model and the linear bias at large scale. We find that passive and star-forming galaxies obey a similarly rising relation between the halo and stellar mass. The mean host halo mass of star forming galaxies increases with the star formation rate between 30 and 200 M$_\odot$.yr$^{-1}$, but flattens for higher values, except if we select only main-sequence galaxies. This reflects the expected transition from a regime of secular co-evolution of the halos and the galaxies to a regime of episodic starburst. We find similar large scale biases for main-sequence, passive, and starburst galaxies at equal stellar mass, suggesting that these populations live in halos of the same mass. We detect an excess of clustering on small scales for passive galaxies and showed, by measuring the large-scale bias of close pairs, that this excess is caused by a small fraction ($\sim16%$) of passive galaxies being hosted by massive halos ($\sim 3 \times 10^{13}$ M$_\odot$) as satellites. Finally, extrapolating the growth of halos hosting the z$\sim$2 population, we show that M$_\star \sim 10^{10}$ M$_\odot$ galaxies at z$\sim$2 will evolve, on average, into massive (M$_\star \sim 10^{11}$ M$_\odot$), field galaxies in the local Universe and M$_\star \sim 10^{11}$ M$_\odot$ galaxies at z=2 into local, massive, group galaxies. The most massive main-sequence galaxies and close pairs of massive, passive galaxies end up in today's clusters.
description: 18 pages, 16 figures, Accepted by A&A
METS-Anwendungsprofil für Produkte der Massendigitalisierung
Creators: name: Maus, David
Publisher: name: Zenodo
Year: 2018
Subjects: mets
iiif
application profile

description: Dieses Anwendungsprofil beschreibt das Präsentationsformat für Objekte der Massendigitalisierung der Herzog August Bibliothek Wolfenbüttel. Namentlich sind dies digitalisierte Drucke, Inkunabeln, Handschriften und grafische Objekte wie Druckgrafiken, Zeichnungen usw.

Das Anwendungsprofil bildet die Grundlage für die Publikation IIIF-konformer Metadaten.
Two-body relaxation driven evolution of the young stellar disc in the Galactic Centre
Creators: name: Subr, Ladislav
name: Haas, Jaroslav
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The centre of our Galaxy hosts almost two hundreds of very young stars, a subset of which is orbiting the central supermassive black hole (SMBH) in a relatively thin disc-like structure. First analyses indicated a power-law surface density profile of the disc, $Σ\propto R^β$ with $β= -2$. Recently, however, speculations about this profile arose. In particular, it now seems to be better described by a sort of broken power-law. By means of both analytical arguments and numerical N-body modelling, we show that such a broken power-law profile is a natural consequence of the two-body relaxation of the disc which is, due to small relative velocities of stars on nearby co-planar Keplerian orbits around the SMBH, effective enough to affect the evolution of the disc on time-scales comparable to its estimated age. In the inner, densest part of the disc, the profile becomes rather flat ($β~ -1$) while the outer parts keep imprints of the initial state. Our numerical models show that the observed projected surface density profile of the young stellar disc can result from two-body relaxation driven evolution of a disc with initial single power-law profile with $-2 < β< -1.5$. In addition, we suggest that two-body relaxation may have caused a significant radial migration of the S-stars towards the central SMBH, thus playing an important role in their formation scenario.
description: accepted for publication in ApJ
Negative priorities: evidence from prohibitive and expletive negation
Creators: name: Mari, Alda
name: Tahar, Chloé
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: In this paper we propose an analysis of prohibitive and expletive negation that relies on two ways of building negative priorities. Our empirical ground is the diachronic development of expletive negation from Latin to French. We show that the negative expression ne (from Indo-European me) is found in two contexts in Latin: imperatives and priority attitudes. We propose a unified semantics for these contexts, that leaves room to accommodate a distinction between positive (e.g. order/wish) and negative (e.g. forbid/fear) priority attitudes. We argue for an ambiguity account of ne driven by these two types of attitudes, and argue for a distinction of a prohibitive ne acting as a true negation in the context of imperatives and positive priority attitudes and an expletive ne, reversing the ordering relation encoded in the lexical semantics of negative priority attitudes. We extended the analysis to expletive negation in the context of epistemic attitudes conveying a meaning of contrariness such as doubt or deny thus establishing a unified semantics for negative attitudes that cuts across priority and epistemic ones.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
A quantum Mirković-Vybornov isomorphism
Creators: name: Webster, Ben
name: Weekes, Alex
name: Yacobi, Oded
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We present a quantization of an isomorphism of Mirković and Vybornov which relates the intersection of a Slodowy slice and a nilpotent orbit closure in $\mathfrak{gl}_N$ , to a slice between spherical Schubert varieties in the affine Grassmannian of $PGL_n$ (with weights encoded by the Jordan types of the nilpotent orbits). A quantization of the former variety is provided by a parabolic W-algebra and of the latter by a truncated shifted Yangian. Building on earlier work of Brundan and Kleshchev, we define an explicit isomorphism between these non-commutative algebras, and show that its classical limit is a variation of the original isomorphism of Mirković and Vybornov. As a corollary, we deduce that the W-algebra is free as a left (or right) module over its Gelfand-Tsetlin subalgebra, as conjectured by Futorny, Molev, and Ovsienko.
description: v2: 48 pages. Major rewrite following referee comments. Added proof of a conjecture of Futorny, Molev, and Ovsienko that the finite W-algebra is free over its Gelfand-Tsetlin subalgebra
A closer look at scalar diversity using contextualized semantic similarity
Creators: name: Westera, Matthijs
name: Boleda, Gemma
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2020

description: We take a closer look at van Tiel et al.’s (2016) experimental results on diversity in scalar inference rates. In contrast to their finding that semantic similarity had no significant effect on scalar inference rates, we show that a sufficiently fine-grained notion of semantic similarity does have an effect: the more similar the two terms on a scale, the lower the scalar inference rate. Moreover, we show that a context-sensitive notion of semantic similarity (in particular ELMo; Peters et al., 2018) can explain more of the variance in the data, but only modestly, only for stimuli that contain informative context words, and only when the scalar terms themselves are sufficiently context-sensitive.
description: Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24
Light double-gluon hybrid states with the exotic quantum numbers $J^{PC} = 1^{-+}$ and $3^{-+}$
Creators: name: Su, Niu
name: Tan, Wei-Han
name: Chen, Hua-Xing
name: Chen, Wei
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We apply the QCD sum rule method to study the double-gluon hybrid states with the quark-gluon contents $\bar q q gg$ ($q=u/d$) and $\bar s s gg$. We construct twenty-eight double-gluon hybrid currents, eleven of which are found to be zero due to some internal symmetries between the two gluons fields. We concentrate on the non-vanishing currents with the exotic quantum numbers $J^{PC} = 1^{-+}$ and $3^{-+}$. Their masses are calculated to be $M_{|\bar q q gg;1^{-+}\rangle} = 4.35^{+0.26}_{-0.30}$ GeV, $M_{|\bar s s gg;1^{-+}\rangle} = 4.49^{+0.25}_{-0.30}$ GeV, $M_{|\bar q q gg;3^{-+}\rangle} = 3.02^{+0.24}_{-0.31}$ GeV, and $M_{|\bar s s gg;3^{-+}\rangle} = 3.16^{+0.22}_{-0.28}$ GeV. The decay behaviors of the $J^{PC} = 3^{-+}$ states are studied, and we propose to search for them in the $πa_1(1260)/ρω/ϕϕ$ channels in future particle experiments.
description: 14 pages, 3 figures, 2 tables, slightly modified, accepted by PRD
Inverse monoids and immersions of $Δ$-complexes
Creators: name: Meakin, John
name: Szakács, Nóra
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M18, 57N35

description: An immersion $f : {\mathcal D} \rightarrow \mathcal C$ between $Δ$-complexes is a $Δ$-map that induces injections from star sets of $\mathcal D$ to star sets of $\mathcal C$. We study immersions between finite-dimensional connected $Δ$-complexes by replacing the fundamental group of the base space by an appropriate inverse monoid. We show how conjugacy classes of the closed inverse submonoids of this inverse monoid may be used to classify connected immersions into the complex. This extends earlier results of Margolis and Meakin for immersions between graphs and of Meakin and Szakács on immersions into $2$-dimensional $CW$-complexes.
description: Revised version. We replaced CW complexes with Delta complexes, and fixed some mistakes