cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fast Motion Understanding with Spatiotemporal Neural Networks and Dynamic Vision Sensors
Creators: name: Bisulco, Anthony
name: Ojeda, Fernando Cladera
name: Isler, Volkan
name: Lee, Daniel D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a Dynamic Vision Sensor (DVS) based system for reasoning about high speed motion. As a representative scenario, we consider the case of a robot at rest reacting to a small, fast approaching object at speeds higher than 15m/s. Since conventional image sensors at typical frame rates observe such an object for only a few frames, estimating the underlying motion presents a considerable challenge for standard computer vision systems and algorithms. In this paper we present a method motivated by how animals such as insects solve this problem with their relatively simple vision systems. Our solution takes the event stream from a DVS and first encodes the temporal events with a set of causal exponential filters across multiple time scales. We couple these filters with a Convolutional Neural Network (CNN) to efficiently extract relevant spatiotemporal features. The combined network learns to output both the expected time to collision of the object, as well as the predicted collision point on a discretized polar grid. These critical estimates are computed with minimal delay by the network in order to react appropriately to the incoming object. We highlight the results of our system to a toy dart moving at 23.4m/s with a 24.73° error in $θ$, 18.4mm average discretized radius prediction error, and 25.03% median time to collision prediction error.
Figshare: PRISMA checklist for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabet-ic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Creators: name: Meregildo-Rodriguez, Edinson Dante
Publisher: name: figshare
Year: 2022
Subjects: Disease surveillance
Major global burdens of disease

description: Figshare: PRISMA checklist for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Construction of exact solutions of nonlinear PDE via dressing chain in 3D
Creators: name: Habibullin, I. T.
name: Khakimova, A. R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The duality between a class of the Davey-Stewartson type coupled systems and a class of two-dimensional Toda type lattices is discussed. A new coupled system related to the recently found lattice is presented. A method for eliminating nonlocalities in coupled systems by virtue of special finite reductions of the lattices is suggested. An original algorithm for constructing explicit solutions of the coupled systems based on the finite reduction of the corresponding lattice is proposed. Some new solutions for coupled systems related to the Volterra lattice are presented as illustrative examples.
description: 12 pages. arXiv admin note: substantial text overlap with arXiv:2409.07017
Striglina pararubricans Chen & Zhang & Wang 2024, sp. nov.
Creators: name: Chen, Feiran
name: Zhang, Yulong
name: Wang, Min
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Thyrididae
Striglina
Striglina pararubricans

description: Striglina pararubricans sp. nov.
Materials
Type status: Holotype. Occurrence: recordedBy: Hai-Ming Xu & Min Wang; sex: male; occurrenceID: 9961BA4D-9369-5A38-B7A3-9264FBAA4506; Location: country: China; stateProvince: Guangdong; county: Shanguan; locality: Nanling; verbatimElevation: 1249 m; Event: eventDate: 09 Apr 2011
Type status: Paratype. Occurrence: recordedBy: Min Wang; sex: male; occurrenceID: BE9D53B6-749E-5F55-AE6D-90B239570504; Location: country: China; stateProvince: Guangdong; county: Shanguan; locality: Nanling; Event: eventDate: 17 Feb 2006
Type status: Paratype. Occurrence: recordedBy: Hai-Ling Zhuang; sex: male; occurrenceID: AF2BE3D0-8F4F-5BC7-BFBD-CBC29B9E7605; Location: country: China; stateProvince: Guangdong; county: Shanguan; locality: Nanling; Event: eventDate: 27 Mar 2012
Description
Male (Fig. 1 c). Wingspan 28-30 mm. Antennae filiform, dark brown; head ochrous, labial palpus long, upcurved, ochrous brown; thorax and tegulae covered in ochrous scales; abdomen dorsally dark brown. Fore-wing ground colour whitish ochrous with a broad dark brown striation from apex to middle of hind margin, reticulate pattern prominent. Hind-wing ground colour light brown, wing pattern not as obvious as fore-wing.
Male genitalia (Fig. 3 c). Uncus slightly bifid apically, longer with two side processes. Subscaphium hairy. Gnathos strip-type with serried tooth. The valvae weak membranous elongated strips, median valval process hook-shaped, strongly sclerotised. Sacculus process sclerotised, apical part bifid, basal part moderately broader than apical part. Aedeagus short and broad with two clusters of cornuti.
Female: unknown.
Diagnosis
This wing pattern of the new species resembles S. rubricans Owada et Huang, 2016, but the fore-wing is narrower and the outer margin is curved (triangular fore-wing in rubricans Fig. 1 c, d), posterior line with a large dark brown area, the uncus is thinner and two processes are longer, the median valval process is thinner and more sclerotised, the sacculus process is slender (Fig. 3 c, d).
Etymology
The specific name pararubricans is derived from the other specific name rubricans due to the resemblance of the present new species in morphological characters to the species S. rubricans.
Distribution
China: Guangdong (Shaoguan).
description: Published as part of Chen, Feiran, Zhang, Yulong & Wang, Min, 2024, Two new species of Striglina Guenée, 1877 (Lepidoptera, Thyrididae) from China, pp. e 126268 in Biodiversity Data Journal 12 on page e126268, DOI: 10.3897/BDJ.12.e126268
Quantum reading capacity under thermal and correlated noise
Creators: name: Lupo, Cosmo
name: Pirandola, Stefano
name: Giovannetti, Vittorio
name: Mancini, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum communication theory sets the maximum rates at which information can be encoded and decoded reliably given the physical properties of the information carriers. Here we consider the problem of readout of a digital optical memory, where information is stored by means of the optical properties of the memory cells that are in turn probed by shining a laser beam on them. Interesting features arise in the regime in which the probing light has to be treated quantum mechanically. The maximum rate of reliable readout defines the quantum reading capacity, which is proven to overcome the classical reading capacity, obtained by probing with classical light, in several relevant settings. We consider a model of optical memory in which information is encoded in the (complex-valued) attenuation factor and study the effects on the reading rates of thermal and correlated noise. The latter type of noise arises when the effects of wave diffraction on the probing light beam are taken into account. We discuss the advantages of quantum reading over the classical one and show that the former is substantially more robust than the latter under thermal noise in the regime of low power per pulse.
description: 10 pages, 3 figures
The velocity operator in quantum mechanics in noncommutative space
Creators: name: Kovacik, Samuel
name: Presnajder, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We tested in the framework of quantum mechanics the consequences of a noncommutative (NC from now on) coordinates. We restricted ourselves to 3D rotationally invariant NC configuration spaces with dynamics specified by the Hamiltonian H = H(kin) + U, H(kin) is an analogue of kinetic energy and U = U(r) denotes an arbitrary rotationally invariant potential. We introduced the velocity operator by Heisenberg relation using the commutator of the coordinate and the Hamiltonian operators. We found that the NC velocity operator possesses various general, independent of potential, properties: 1) uncertainty relations indicate an existence of a natural kinetic energy cut-off, 2) vanishing commutator relations for velocity components, which is non-trivial in the NC case, 3) modified relation between the velocity operator and H(kin) that indicates the existence of maximal velocity and confirms the kinetic energy cut-off, 4) All these results sum up in canonical (general, not depending on a particular form of the central potential) commutation relations of the Euclidean group E(4), 5) NC Heisenberg equation for the velocity operator, relating acceleration to derivatives of the potential.
description: 19 pages, no figures
On infinite dimensional algebraic transformation groups
Creators: name: Popov, Vladimir L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14L30

description: We explore orbits, rational invariant functions, and quotients of the natural actions of connected, not necessarily finite dimensional subgroups of the automorphism groups of irreducible algebraic varieties. The applications of the results obtained are given.
description: 20 pages. Final version
The ALPINE-ALMA [CII] Survey: Unveiling the baryon evolution in the ISM of $z\sim5$ star-forming galaxies
Creators: name: Sawant, P.
name: Nanni, A.
name: Romano, M.
name: Donevski, D.
name: Bruzual, G.
name: Ysard, N.
name: Lemaux, B. C.
name: Inami, H.
name: Calura, F.
name: Pozzi, F.
name: Małek, K.
name: Junais
name: Boquien, M.
name: Faisst, A. L.
name: Hamed, M.
name: Ginolfi, M.
name: Zamorani, G.
name: Lorenzon, G.
name: Molina, J.
name: Bardelli, S.
name: Ibar, E.
name: Vergani, D.
name: Di Cesare, C.
name: Béthermin, M.
name: Burgarella, D.
name: Cassata, P.
name: Dessauges-Zavadsky, M.
name: D'Onghia, E.
name: Dubois, Y.
name: Magdis, G. E.
name: Mendez-Hernandez, H.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations reveal a rapid dust build-up in high-redshift galaxies (z > 4), challenging current models of galaxy formation. While our understanding of dust production and destruction in the interstellar medium (ISM) is advancing, probing baryonic processes in the early Universe remains a complex task. We characterize the evolution of 98 z~5 star-forming galaxies observed as part of the ALPINE survey by constraining the physical processes underpinning the gas and dust production, consumption, and destruction in their ISM. We make use of chemical evolution models to simultaneously reproduce the observed dust and gas content. For each galaxy, we estimate initial gas mass, inflows and outflows, and efficiencies of dust growth and destruction. We test the models with the canonical Chabrier and top-heavy initial mass functions (IMFs), with the latter enabling rapid dust production on shorter timescales. Our models successfully reproduce gas and dust content in older galaxies (> 600 Myr) regardless of the IMF, with Type II SNe as the primary dust source and no dust growth in ISM with moderate inflow of primordial gas. In case of intermediate-age galaxies (300 - 600 Myr), we reproduce the gas and dust content through Type II SNe and dust growth in ISM, though we observe an over-prediction of dust mass in older galaxies, potentially indicating an unaccounted dust destruction mechanism and/or an overestimation of the observed dust masses. The number of young galaxies (< 300 Myr) reproduced, increases for models assuming top-heavy IMF but with maximal prescriptions of dust production. Galactic outflows are necessary to reproduce observed gas and dust masses. The Chabrier IMF models reproduce 65% of galaxies, while top-heavy IMF models improve this to 93%, easing tensions with observations. Upcoming JWST data will refine these models by resolving degeneracies in intrinsic galaxy properties.
description: Accepted for publication in A&A
Enhanced compressibility due to repulsive interaction in the Harper model
Creators: name: Kraus, Yaacov E.
name: Zilberberg, Oded
name: Berkovits, Richard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the interplay between repulsive interaction and an almost staggered on-site potential in one-dimension. Specifically, we address the Harper model for spinless fermions with nearest-neighbor repulsion, close to half-filling. Using density matrix renormalization group (DMRG), we find that, in contrast to standard behavior, the system becomes more compressible as the repulsive interaction is increased. By generating a low-energy effective model, we unveil the effect of interactions using mean-field analysis: the density of a narrow band around half-filling is anti-correlated with the on-site potential, whereas the density of lower occupied bands follows the potential and strengthens it. As a result, the states around half-filling are squeezed by the background density, their band becomes flatter, and the compressibility increases.
description: 7 pages, 3 figures
On the Origins of Life's Homochirality: Inducing Enantiomeric Excess with Spin-Polarized Electrons
Creators: name: Ozturk, S. Furkan
name: Sasselov, Dimitar D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Life as we know it is homochiral, but the origins of biological homochirality on early Earth remain elusive. Shallow closed-basin lakes are a plausible prebiotic environment on early Earth, and most are expected to have significant sedimentary magnetite deposits. We hypothesize that UV (200-300nm) irradiation of magnetite deposits could generate hydrated spin-polarized electrons sufficient to induce chirally selective prebiotic chemistry. Such electrons are potent reducing agents that drive reduction reactions where the spin polarization direction can alter enantioselectively the reaction kinetics. Our estimate of this chiral bias is based on the strong effective spin-orbit coupling observed in the chiral-induced spin selectivity (CISS) effect, as applied to energy differences in reduction reactions for different isomers. In the original CISS experiments, spin selective electron transmission through a monolayer of dsDNA molecules is observed at room temperature - indicating a strong coupling between molecular chirality and electron spin. We propose that the chiral symmetry breaking due to the CISS effect, when applied to reduction chemistry, can induce enantioselective synthesis on the prebiotic Earth and thus facilitate the homochiral assembly of life's building blocks.
description: 10 pages, 3 figures
Mycobacterium iranicum pulmonary disease in an elderly patient with extensive usual interstitial pneumonia: Case report
Creators: name: Kalra, Salil
name: Rubinstein, Israel
Publisher: name: University of Illinois at Chicago
Year: 2022
Subjects: Uncategorized

description: We report the first case of Mycobacterium iranicumpulmonary disease in an elderly patient with extensive usual interstitial pneumonia and traction bronchiectasis. He was treated with oral doxycycline, ciprofloxacin, and sulfamethoxazole/trimethoprim daily for 9 months. This was associated with eradication of the microorganism in the sputum and steady weight gain.
Extending surjective maps preserving the norm of symmetric kubo-ando means
Creators: name: Chetcuti, Emmanuel
name: Healey, Curt
Publisher: name: arXiv
Year: 2024
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: Recently, the question of whether surjective maps preserving the norm of a symmetric Kubo-Ando mean can be extended to Jordan $\ast$-isomorphisms has been tackled. The question was affirmatively answered for surjective maps between $C^{*}$-algebras for certain specific classes of symmetric Kubo-Ando means. Here, we give a comprehensive answer to this question for surjective maps between $AW^{*}$-algebras preserving the norm of any symmetric Kubo-Ando mean.
Discovery and Observations of ASASSN-13db, an EX Lupi-Type Accretion Event on a Low-Mass T Tauri Star
Creators: name: Holoien, Thomas W. -S.
name: Prieto, Jose L.
name: Stanek, Krzysztof Z.
name: Kochanek, Christopher S.
name: Shappee, B. J.
name: Zhu, Z.
name: Sicilia-Aguilar, A.
name: Grupe, D.
name: Croxall, K.
name: Adams, J. J.
name: Simon, J. D.
name: McGraw, N. Morell S. M.
name: Wagner, R. M.
name: Basu, U.
name: Beacom, J. F.
name: Bersier, D.
name: Brimacombe, J.
name: Jencson, J.
name: Pojmanski, G.
name: Starrfield, S. G.
name: Szczygieł, D. M.
name: Woodward, C. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We discuss ASASSN-13db, an EX Lupi-type ("EXor") accretion event on the young stellar object (YSO) SDSS J051011.01$-$032826.2 (hereafter SDSSJ0510) discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). Using archival photometric data of SDSSJ0510 we construct a pre-outburst spectral energy distribution (SED) and find that it is consistent with a low-mass class II YSO near the Orion star forming region ($d \sim 420$ pc). We present follow-up photometric and spectroscopic observations of the source after the $ΔV \sim-$5.4 magnitude outburst that began in September 2013 and ended in early 2014. These data indicate an increase in temperature and luminosity consistent with an accretion rate of $\sim10^{-7}$ $\rm{M}_\odot$ yr$^{-1}$, three or more orders of magnitude greater than in quiescence. Spectroscopic observations show a forest of narrow emission lines dominated by neutral metallic lines from Fe I and some low-ionization lines. The properties of ASASSN-13db are similar to those of the EXor prototype EX Lupi during its strongest observed outburst in late 2008.
description: 14 pages, 4 figures, 1 table. Updated May 2014 to reflect changes in the final version published in ApJL. Photometric data presented in this submission are included as ancillary files. For a brief video explaining this paper, see http://youtu.be/yRCCrNJnvtY
Técnicas antifraude para o reconhecimento facial em ambientes não controlados
Creators: name: Jesus, Leone
Publisher: name: Zenodo
Year: 2022

description: A precisão de métodos automáticos de reconhecimento facial alcançou resultados satisfatórios em conjuntos de imagens que há alguns anos são considerados desafiadores. Nos anos mais recentes, tem até mesmo superado o desempenho humano nessa tarefa. Contudo, existem estratégias de fraude que facilmente burlam muitos desses sistemas de reconhecimento facial, em especial os baseados em textura. Apesar de existirem diversos trabalhos de antifraude em imagens de textura na literatura, seus experimentos e resultados não representam o desafio para aplicações do mundo real de forma convincente. Isso ocorre pela falta de variabilidade nos conjuntos de imagens disponíveis publicamente para o desenvolvimento de métodos de antifraude. O objetivo desse trabalho é desenvolver um método de antifraude utilizando imagens de textura de faces em ambientes menos controlados, de forma a alcançar resultados similares aos de reconhecimento facial em cenários mais realistas. Nossa atual proposta para criar um descritor genérico é adaptar um modelo baseado em meta-learning como um classificador de apenas uma classe, com o objetivo de aprender o que são faces reais. Assim, tal descritor pode aprender a distinguir faces reais de faces falsas e posteriormente passar por um processo de refinamento. Tal refinamento, seria baseado em imagens utilizadas em bases de reconhecimento facial, que são menos controladas e mais abundantes que bases para antifraude.
Design of a Continuous Local Flexibility Market with Network Constraints
Creators: name: Prat, Eléa
name: Herre, Lars
name: Kazempour, Jalal
name: Chatzivasileiadis, Spyros
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: To the best of our knowledge, this paper proposes for the first time a design of a continuous local flexibility market that explicitly considers network constraints. Continuous markets are expected to be the most appropriate design option during the early stages of local flexibility markets, where insufficient liquidity can hinder market development. At the same time, increasingly loaded distribution systems require to explicitly consider network constraints in local flexibility market clearing in order to help resolve rather than aggravate local network problems, such as line congestion and voltage issues. This paper defines the essential design considerations, introduces the local flexibility market clearing algorithm, and -- aiming to establish a starting point for future research -- discusses design options and research challenges that emerge during this procedure which require further investigation.
description: Conference
A compact group lens modeled with GIGA-Lens: Enhanced inference for complex systems
Creators: name: Urcelay, F.
name: Jullo, E.
name: Barrientos, L. F.
name: Huang, X.
name: Hernandez, J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In the era of large-scale astronomical surveys, fast modeling of strong lens systems has become increasingly vital. While significant progress has been made for galaxy-scale lenses, the development of automated methods for modeling larger systems, such as groups and clusters, is not as extensive. Our study aims to extend the capabilities of the GIGA-Lens code, enhancing its efficiency in modeling multi-galaxy strong lens systems. We focus on demonstrating the potential of GPU-accelerated Bayesian inference in handling complex lensing scenarios with a high number of free parameters. We employ an improved inference approach that combines image position and pixelated data with an annealing sampling technique to obtain the posterior distribution of complex models. This method allows us to overcome the challenge of limited prior information, a high number of parameters, and memory usage. Our process is exemplified through the analysis of the compact group lens system DES J0248-3955, for which we present VLT/X-shooter spectra. We measure a redshift of $z = 0.69 \pm 0.04$ for the group, and $z = 1.2722 \pm 0.0005$ for one of the extended arcs. Our enhanced method successfully constrained a lens model with 29 free parameters and lax priors in a remarkably short time. The mass of the lens is well described by a single dark-matter halo with a velocity dispersion of $σ_v = (690 \pm 30) \, km \, s^{-1}$. The model predicts the presence of a second source at the same redshift and a third source at approximately $z \sim 2.7$. Our study demonstrates the effectiveness of our lens modeling technique for dealing with a complex system in a short time using ground-based data. This presents considerable potential within the context of large surveys such as LSST.
description: 10 pages, 6 figures. Submitted to A&A. The final version may differ slightly after production edits
Sun-related variability in the light curves of compact radio sources. A new view on Extreme Scattering Events
Creators: name: Marchili, Nicola
name: Witzel, Gunther
name: Aller, Margo F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: An in-depth analysis of variability has been carried out on the 2 GHz and 8 GHz light curves from the impressive database of the US Navy's extragalactic source monitoring program at the Green Bank Interferometer (GBI), complemented by UMRAO light curves for selected sources. The data have been inspected in a search for one-year periodic patterns. Variations on timescales below one year have been isolated through a de-trending algorithm and analysed, looking for correlations with the Sun's position relative to the sources. Objects at ecliptic latitude below ~20deg show one-year periodic drops in flux densities, centred close to the time of minimum solar elongation; both interplanetary scintillation and instrumental effects may contribute to these events. However, in some cases the drops extend to much larger angular distances, affecting sources at high ecliptic latitudes, and causing variability on timescales of months. Three different kinds of such events have been identified in the data; their exact nature is not yet known. These events significantly alter the sources' variability characteristics estimated at GHz frequencies. In particular, we found that many extreme scattering events previously identified in the GBI monitoring program are the consequence of Sun-related effects; others occur simultaneously in several objects, which excludes interstellar scattering as their possible cause. These discoveries have a severe impact on our understanding of extreme scattering events. Furthermore, Sun-related variability can significantly alter results of variability studies, which are very powerful tools for the investigation of active galactic nuclei. Without a thorough comprehension of the mechanisms that cause these variations, the estimation of some essential information about the emitting regions, such as their size and all the derived quantities, might be seriously compromised.
description: 20 pages, 14 figures, 3 tables. Accepted for publication in Astronomy & Astrophysics
The Kapustin-Witten equations and nonabelian Hodge theory
Creators: name: Liu, Chih-Chung
name: Rayan, Steven
name: Tanaka, Yuuji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14J60, 53C07, 14D21

description: Arising from a topological twist of $\mathcal{N} = 4$ super Yang-Mills theory are the Kapustin-Witten equations, a family of gauge-theoretic equations on a four-manifold parametrized by $t\in\mathbb{P}^1$. The parameter corresponds to a linear combination of two super charges in the twist. When $t=0$ and the four-manifold is a compact Kähler surface, the equations become the Simpson equations, which was originally studied by Hitchin on a compact Riemann surface, as demonstrated independently in works of Nakajima and the third-named author. At the same time, there is a notion of $λ$-connection in the nonabelian Hodge theory of Donaldson-Corlette-Hitchin-Simpson in which $λ$ is also valued in $\mathbb{P}^1$. Varying $λ$ interpolates between the moduli space of semistable Higgs sheaves with vanishing Chern classes on a smooth projective variety (at $λ=0$) and the moduli space of semisimple local systems on the same variety (at $λ=1$) in the twistor space. In this article, we utilise the correspondence furnished by nonabelian Hodge theory to describe a relation between the moduli spaces of solutions to the equations by Kapustin and Witten at $t=0$ and $t \in \mathbb{R} \setminus \{ 0 \}$ on a smooth, compact Kähler surface. We then provide supporting evidence for a more general form of this relation on a smooth, closed four-manifold by computing its expected dimension of the moduli space for each of $t=0$ and $t \in \mathbb{R} \setminus \{ 0 \}$.
description: 17 pages
Controlling frustrated liquids and solids with an applied field in a kagome Heisenberg antiferromagnet
Creators: name: Nishimoto, Satoshi
name: Shibata, Naokazu
name: Hotta, Chisa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quantum spin-1/2 kagome Heisenberg antiferromagnet is the representative frustrated system possibly hosting a spin liquid. Clarifying the nature of this elusive topological phase is a key challenge in condensed matter, however, even identifying it still remains unsettled. Here, we apply a magnetic field and discover a series of spin gapped phases appearing at five different fractions of magnetization by means of grand canonical density matrix renormalization group, an unbiased state-of-art numerical technique. The magnetic field dopes magnons and first gives rise to a possible Z3 spin liquid plateau at 1/9-magnetization. Higher field induces a self-organized super-lattice-unit, a six-membered ring of quantum spins, resembling an atomic orbital structure. Putting magnons into this unit one by one yields three quantum solid plateaus. We thus find that the magnetic field could control the transition between various emergent phases by continuously releasing the frustration.
description: 6 pages 4 figures and 4 page supplementary file. Nature Communications, accepted, July 10, 2013
Figshare4: Supplementary materials.
Creators: name: Meregildo-Rodriguez, Edinson Dante
Publisher: name: figshare
Year: 2022
Subjects: Disease surveillance
Major global burdens of disease

description: Figshare4: Supplementary materials (Search strategy, Table S2- Excluded primary studies) ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Confronting the broken phase N2HDM with Higgs Data
Creators: name: Binjonaid, Maien
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The broken phase of the Next-to two-Higgs-doublet model (N2HDM) constitutes an archetype of extended Higgs sectors. In the presence of a softly-broken $\mathrm{Z}_2$ symmetry throughout the scalar and Yukawa sectors, as the additional gauge singlet field does not interact with fermions, the model admits four variants of Yukawa interactions between the doublets and Standard Model fermions. We confront each type with experimental Higgs data, especially from CMS and ATLAS detectors at the LHC. Interfacing the models with the the state-of-the-art package $\mathtt{HiggsTools}$, we perform a statistical $χ^2$ analysis to determine the best-fit points and exclusion limits at the $95\%$ and $68\%$ C.L., and identify SM-like Higgs measurements that affect each type the most. We further analyze the exclusion bounds on the additional Higgs bosons at the $95\%$ C.L., paying special attention to searches of hypothetical non-SM Higgs resonances decaying into a pair of bosons or fermions. We show regions where the additional Higgs bosons do not satisfy the narrow-width approximation utilized in most experimental searches.
description: Version accepted in Particles
On black hole sub-systems in idealized nuclear star clusters
Creators: name: Breen, Philip G.
name: Heggie, Douglas C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observational evidence, numerical simulations and theoretical arguments seem to indicate that stellar mass black holes (BH) persist in stellar systems such as globular star clusters for much longer than previously thought. Previously, theory implied that the BH would segregate into a compact system with short dynamical time scales, and that the BH would escape long before the present. But stellar systems can exist in a state of balanced evolution, where the energy generated in the core is regulated by the process of two-body relaxation in the bulk of the system. If the system has a centrally concentrated BH subsystem and there is no massive central BH, then the energy is generated by three-body encounters in the core of this subsystem. Therefore, in balanced evolution, the evolution of the BH subsystem is regulated by the much longer time scales of the host system. In the present paper the implications of these results for idealized nuclear star clusters (NSC) are discussed. Though previous theory implied that BH would be almost absent from many NSC -- those with relatively short dynamical time scales -- it is argued here that, based on the results of idealized models, many such NSC could still be host to substantial BH subsystems.
description: 6 pages, 4 figures, Accepted for publication in MNRAS
Yields from massive stars in binaries. Chemical evolution of the Milky Way disk
Creators: name: Pepe, E.
name: Palla, M.
name: Matteucci, F.
name: Spitoni, E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A large fraction of massive stars in the Galaxy reside in binary systems and their evolution is different from that of single stars. The yields of massive stars, which are the main responsible for the production of metals, can be therefore affected by the binary nature of the systems. Recently, Farmer et al. (2023) computed new grids of yields for single and binary-stripped massive stars with solar chemical composition. The main purpose of this paper is to test these yields on the chemical evolution of Galactic stars. To do that, we adopt well-tested chemical evolution models for the Milky Way disk, implementing both yields for single and binary-stripped massive stars. In particular, we assume different percentages of massive binary systems within the initial mass function. We compute the evolution of 22 chemical species starting from $^{4}$He to $^{64}$Zn. Our main results can be summarized as follows: i) when adopting the yields of Farmer et al. (2023), large differences are found relative to the predicted solar abundances by chemical evolution models adopting "standard" massive star yields from the literature for $^{12}$C, $^{14}$N, $^{24}$Mg, $^{39}$K, $^{40}$Ca, $^{55}$Mn and $^{59}$Co. Generally, the yields for single stars reproduce slightly better the observed solar abundances, although for several elements a large fraction of binaries helps in reproducing the observations; ii) different fractions of massive binaries (from 50% to 100%) produce negligible differences in the predicted solar abundances, whereas the differences are more marked between models with and without binary-stripped stellar yields; iii) for the [X/Fe] vs. [Fe/H] relations, the yields including massive stars in binaries produce the best results for $^{52}$Cr, while for $^{12}$C, $^{39}$K, $^{40}$Ca and $^{24}$Mg the best results are obtained with Farmer's yields with no binaries.
description: Accepted for publication in Astronomy and Astrophysics (A&A), 12 pages, 8 figures, 2 tables
The Gysin Sequence for Quantum Lens Spaces
Creators: name: Arici, Francesca
name: Brain, Simon
name: Landi, Giovanni
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46L85, 58B34

description: We define quantum lens spaces as `direct sums of line bundles' and exhibit them as `total spaces' of certain principal bundles over quantum projective spaces. For each of these quantum lens spaces we construct an analogue of the classical Gysin sequence in K-theory. We use the sequence to compute the K-theory of the quantum lens spaces, in particular to give explicit geometric representatives of their K-theory classes. These representatives are interpreted as `line bundles' over quantum lens spaces and generically define `torsion classes'. We work out explicit examples of these classes.
description: 27 pages. v2: No changes in the scientific content and results. Section 5 completely re-written and a final section added; suppressed two appendices; added references; minor changes throughout the paper. To appear in the JNcG
Figshare3: Raw date for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Creators: name: Meregildo-Rodriguez, Edinson Dante
Publisher: name: figshare
Year: 2022
Subjects: Disease surveillance
Major global burdens of disease

description: This project contains Raw data (Search strategy, Table S1 – Included primary studies, Table S2- Excluded primary studies) for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Statistical classification of gamma-ray bursts based on the Amati relation
Creators: name: Qin, Yi-Ping
name: Chen, Zhi-Fu
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-ray bursts (GRBs) are believed to belong to two classes and they are conventionally divided according to their durations. This classification scheme is not satisfied due to the fact that duration distributions of the two classes are heavily overlapped. We collect a new sample (153 sources) of GRBs and investigate the distribution of the logarithmic deviation of the $E_p$ value from the Amati relation. The distribution possesses an obvious bimodality structure and it can be accounted for by the combination of two Gaussian curves. Based on this analysis, we propose to statistically classify GRBs in the well-known $E_{p}$ vs. $E_{iso}$ plane with the logarithmic deviation of the $E_p$ value. This classification scheme divides GRBs into two groups: Amati type bursts and non-Amati type bursts. While Amati type bursts well follow the Amati relation, non-Amati type bursts do not. It shows that most Amati type bursts are long duration bursts and the majority of non-Amati type bursts are short duration bursts. In addition, it reveals that Amati type bursts are generally more energetic than non-Amati type bursts. An advantage of the new classification is that the two kinds of burst are well distinguishable and therefore their members can be identified in certainty.
Wavelength calibration of the Hamilton echelle spectrograph
Creators: name: Pakhomov, Yu. V.
name: Zhao, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the wavelength calibration of the Hamilton echelle spectrograph (the Lick observatory). The main problem of the calibration arises from the fact that thorium lines are absent in the spectrum of "ThAr" hollow-cathode lamp now under the operation. On the other hand, numerous unknown strong lines are present in the spectrum. These lines was identified with titanium. We estimate the temperature of the lamp gas which permits us to calculate the intensities of the lines, and to select a large number of relevant Ti I and Ti II lines. The titanium line list for the Lick hallow-cathode lamp is presented. The wavelength calibration using this line list was made with accuracy about 0.006A.
description: 8 pages, 5 figures, 2 tables, 1 external table; accepted in Astronomical Journal
Figshare1: PRISMA checklist for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Creators: name: Meregildo-Rodriguez, Edinson Dante
Publisher: name: figshare
Year: 2022
Subjects: Disease surveillance
Major global burdens of disease

description: Figshare: PRISMA checklist for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
title: Open brief aan Lord Northcliffe; [1919]
title: Berlin, 22. Februari 1919
titleType: Subtitle
Creators: name: Borsodi, William
name: Northcliffe, Alfred Charles William Harmsworth Lord
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2016

description: Verfasser am Textende genannt
On a gap in the proof of the generalised quantum Stein's lemma and its consequences for the reversibility of quantum resources
Creators: name: Berta, Mario
name: Brandão, Fernando G. S. L.
name: Gour, Gilad
name: Lami, Ludovico
name: Plenio, Martin B.
name: Regula, Bartosz
name: Tomamichel, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that the proof of the generalised quantum Stein's lemma [Brandão & Plenio, Commun. Math. Phys. 295, 791 (2010)] is not correct due to a gap in the argument leading to Lemma III.9. Hence, the main achievability result of Brandão & Plenio is not known to hold. This puts into question a number of established results in the literature, in particular the reversibility of quantum entanglement [Brandão & Plenio, Commun. Math. Phys. 295, 829 (2010); Nat. Phys. 4, 873 (2008)] and of general quantum resources [Brandão & Gour, Phys. Rev. Lett. 115, 070503 (2015)] under asymptotically resource non-generating operations. We discuss potential ways to recover variants of the newly unsettled results using other approaches.
description: 29 pages; in v2 we added Section V.D and Section VI, and corrected several small typos; v5 contains minor corrections in the discussion in Section V
Entangling nuclear spins in distant quantum dots via an electron bus
Creators: name: Bello, Miguel
name: Benito, Mónica
name: Schuetz, Martin J. A.
name: Platero, Gloria
name: Giedke, Géza
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a protocol for the deterministic generation of entanglement between two ensembles of nuclear spins surrounding two distant quantum dots. The protocol relies on the injection of electrons with definite polarization in each quantum dot and the coherent transfer of electrons from one quantum dot to the other. Computing the exact dynamics for small systems, and using an effective master equation and approximate non-linear equations of motion for larger systems, we are able to confirm that our protocol indeed produces entanglement for both homogeneous and inhomogeneous systems. Last, we analyze the feasibility of our protocol in several current experimental platforms.
Inversion of the star transform
Creators: name: Zhao, Fan
name: Schotland, John C.
name: Markel, Vadim A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We define the star transform as a generalization of the broken ray transform introduced by us in previous work. The advantages of using the star transform include the possibility to reconstruct the absorption and the scattering coefficients of the medium separately and simultaneously (from the same data) and the possibility to utilize scattered radiation which, in the case of the conventional X-ray tomography, is discarded. In this paper, we derive the star transform from physical principles, discuss its mathematical properties and analyze numerical stability of inversion. In particular, it is shown that stable inversion of the star transform can be obtained only for configurations involving odd number of rays. Several computationally-efficient inversion algorithms are derived and tested numerically.
description: Accepted to Inverse Problems in this form
Probing the low-energy particle content of blazar jets through MeV observations
Creators: name: Tavecchio, F.
name: Nava, L.
name: Sciaccaluga, A.
name: Coppi, P.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Many of the blazars observed by Fermi actually have the peak of their time-averaged gamma-ray emission outside the $\sim$ GeV Fermi energy range, at $\sim$ MeV energies. The detailed shape of the emission spectrum around the $\sim$ MeV peak places important constraints on acceleration and radiation mechanisms in the blazar jet and may not be the simple broken power law obtained by extrapolating from the observed X-ray and GeV gamma-ray spectra. In particular, state-of-the-art simulations of particle acceleration by shocks show that a significant fraction (possibly up to $\approx 90\%$) of the available energy may go into bulk, quasi-thermal heating of the plasma crossing the shock rather than producing a non-thermal power law tail. Other ``gentler" but possibly more pervasive acceleration mechanisms such as shear acceleration at the jet boundary may result in a further build-up of the low-energy ($γ\lesssim 10^{2}$) electron/positron population in the jet. As already discussed for the case of gamma-ray bursts, the presence of a low-energy, Maxwellian-like ``bump'' in the jet particle energy distribution can strongly affect the spectrum of the emitted radiation, e.g., producing an excess over the emission expected from a power-law extrapolation of a blazar's GeV-TeV spectrum. We explore the potential detectability of the spectral component ascribable to a hot, quasi-thermal population of electrons in the high-energy emission of flat-spectrum radio quasars (FSRQ). We show that for typical FSRQ physical parameters, the expected spectral signature is located at $\sim$ MeV energies. For the brightest Fermi FSRQ sources, the presence of such a component will be constrained by the upcoming MeV Compton Spectrometer and Imager (COSI) satellite.
description: 5 pages, 2 figures, accepted for publication in A&A Letters
Graphene on Hexagonal Boron Nitride
Creators: name: Yankowitz, Matthew
name: Xue, Jiamin
name: LeRoy, Brian J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The field of graphene research has developed rapidly since its first isolation by mechanical exfoliation in 2004. Due to the relativistic Dirac nature of its charge carriers, graphene is both a promising material for next-generation electronic devices and a convenient low-energy testbed for intrinsically high-energy physical phenomena. Both of these research branches require the facile fabrication of clean graphene devices so as not to obscure its intrinsic physical properties. Hexagonal boron nitride has emerged as a promising substrate for graphene devices, as it is insulating, atomically flat and provides a clean charge environment for the graphene. Additionally, the interaction between graphene and boron nitride provides a path for the study of new physical phenomena not present in bare graphene devices. This review focuses on recent advancements in the study of graphene on hexagonal boron nitride devices from the perspective of scanning tunneling microscopy with highlights of some important results from electrical transport measurements.
description: Review article, 39 pages, 22 figures
Figshare2: PRISMA Flowchart for ‘Impact of the Covid-19 pandemic on the incidence and clinical outcomes of diabetic ketoacidosis among children with type 1 diabetes: systematic review and meta-analysis’.
Creators: name: Meregildo-Rodriguez, Edinson Dante
Publisher: name: figshare
Year: 2022
Subjects: Major global burdens of disease
Disease surveillance

description: This project contains Supplementary materials (Table S1- Search strategy, Table S2- Excluded primary studies).