cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Every function is the representation function of an additive basis for the integers
Creators: name: Nathanson, Melvyn B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B13, 11B34, 11B05

description: Let A be a set of integers. For every integer n, let r_{A,h}(n) denote the number of representations of n in the form n = a_1 + a_2 + ... + a_h, where a_1, a_2,...,a_h are in A and a_1 \leq a_2 \leq ... \leq a_h. The function r_{A,h}: Z \to N_0 \cup \infty is the representation function of order h for A. The set A is called an asymptotic basis of order h if r_{A,h}^{-1}(0) is finite, that is, if every integer with at most a finite number of exceptions can be represented as the sum of exactly h not necessarily distinct elements of A. It is proved that every function is a representation function, that is, if f: Z \to N_0 \cup \infty is any function such that f^{-1}(0) is finite, then there exists a set A of integers such that f(n) = r_{A,h}(n) for all n in Z. Moreover, the set A can be arbitrarily sparse in the sense that, if ϕ(x) \to \infty, then there exists a set A with f(n) = r_{A,h}(n) such that card{a in A : |a| \leq x} < ϕ(x) for all sufficiently large x.
description: 15 pages. LaTex file. Corrected and revised manuscript
Trajectories of psychological distress during recovery from polysubstance use disorder
Creators: name: Erga, Aleksander H.
name: Audhild Hønsi
name: Anda-Ågotnes, Liss Gøril
name: Nesvåg, Sverre
name: Hesse, Morten
name: Hagen, Egon
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Computational Biology

description: Polysubstance use is a prevalent substance use pattern with adverse effects on psychological distress and diminished treatment outcomes. Although polysubstance use often dominates clinical practice, the trajectories of substance use and psychological distress in the initial phase of treatment have been subject to few empirical investigations. 141 patients initiating inpatient or outpatient treatment for substance use disorder were followed for 12 months, using multiple assessments. We assessed psychological distress and substance use at baseline and at 3-, 6-, and 12-month follow-up visits. We implemented an SMS tracker of substance use during follow-up to reduce the impact of missing data. Stable abstinence was associated with a lower baseline SCL-90-R score, as well as a more rapid symptomatic decline during the first 3 months of abstinence. Unstable abstinence was associated with higher GSI scores at baseline, but also with a significant drop in scores across the follow-up period. Relapse was associated with an initial drop in GSI scores, but a subsequent increase in GSI scores at later follow-ups. Most participants had a rapid reduction of psychological distress during the first 3 months of abstinence. Elevated levels of psychological distress may indicate an increased risk of drug use or relapse and should be monitored carefully. Our findings highlight the importance of early screening for psychological distress in SUD treatment, and advocate the use of tentative diagnostic procedures in the early phase of treatment of PSUD.
Catching NGC 4051 in the low state with Chandra
Creators: name: Uttley, P.
name: Fruscione, A.
name: McHardy, I.
name: Lamer, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results from a Chandra TOO observation of the low-luminosity Narrow Line Seyfert 1 galaxy NGC 4051, obtained during a 6-week duration low-flux state in 2001 February. During the Chandra observation, the 2-10 keV source flux was 7e-12 erg/cm^2/s, corresponding to a 2-10 keV luminosity of 8e40 erg/s. We confirm the absence of strong extended soft X-ray emission in NGC 4051, and that the low state spectrum is dominated by the central point source. The X-ray spectrum has an unusual, hybrid shape, very soft below ~3 keV (and which we model with a black body of temperature 0.14 keV) and very hard at higher energies (power-law slope of Gamma~1). The lightcurves in both soft and hard bands are significantly variable and correlated, implying a connection between hard and soft components and proving that the hard component is dominated by primary continuum emission and is not due to pure reflection from distant cold material. However, a comparison with RXTE data obtained during the same 2001 low state suggests the presence of unusually prominent disk reflection features, which may help to explain the apparent upwards curvature and extreme hardness of the Chandra spectrum above a few keV. The shape of the 2001 low state spectrum is consistent with that observed in a brief (<3 d) low flux excursion during the source's normal state in April 2000, suggesting that emission processes during the low state are not significantly different to those in the normal state. The unusual spectral shape observed in the low state may be a continuation to low fluxes of the normal, flux-dependent spectral variability of the source.
description: 27 pages (preprint format), 9 figures. Accepted for publication in ApJ
title: Lettre à Stéphane Hazebrouck (Institut Cochin)
Creators: name: Leibowitch, Jacques
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Source: http://www.calames.abes.fr/pub/ms/Calames-2019311113513785
Ritter et al Supplemental File S2 Veterinarian Questionnaire
Creators: name: Ritter, Caroline
Publisher: name: figshare
Year: 2021
Subjects: subject: 70199 Agriculture, Land and Farm Management not elsewhere classified
subject: FOS: Other agricultural sciences

description: Supplemental Material (Journal of Dairy Science): Herd health and production management visits on Canadiandairy cattle farms: Structure, goals, and topics discussed
Additional file 1 of Valproic acid promotes the in vitro differentiation of human pluripotent stem cells into spermatogonial stem cell-like cells
Creators: name: Wang, Xiaotong
name: Qu, Mengyuan
name: Li, Zili
name: Long, Yuting
name: Hong, Kai
name: Li, Honggang
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Antibodies used in this study. Table S2 Primers used in this study.
Inverse FIP Effects in Giant Solar Flares Found from Earth X-Ray Albedo with Suzaku/XIS
Creators: name: Katsuda, Satoru
name: Ohno, Masanori
name: Mori, Koji
name: Beppu, Tatsuhiko
name: Kanemaru, Yoshiaki
name: Tashiro, Makoto S.
name: Terada, Yukikatsu
name: Sato, Kosuke
name: Morita, Kae
name: Sagara, Hikari
name: Ogawa, Futa
name: Takahashi, Haruya
name: Murakami, Hiroshi
name: Nobukawa, Masayoshi
name: Tsunemi, Hiroshi
name: Hayashida, Kiyoshi
name: Matsumoto, Hironori
name: Noda, Hirofumi
name: Nakajima, Hiroshi
name: Ezoe, Yuichiro
name: Tsuboi, Yohko
name: Maeda, Yoshitomo
name: Yokoyama, Takaaki
name: Narukage, Noriyuki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report X-ray spectroscopic results for four giant solar flares occurred on 2005 September 7 (X17.0), 2005 September 8 (X5.4), 2005 September 9 (X6.2), and 2006 December 5 (X9.0), obtained from Earth albedo data with the X-ray imaging spectrometer (XIS) onboard Suzaku. The good energy resolution of the XIS (FWHM$\sim$100 eV) enables us to separate a number of line-like features and detect the underlying continuum emission. These features include Si He$α$, Si Ly$α$, S He$α$, S Ly$α$, Ar He$α$, and Ca He$α$ originating from solar flares as well as fluorescent Ar K$α$ and Ar K$β$ from the Earth atmosphere. Absolute elemental abundances (X/H) averaged over the four flares are obtained to be $\sim$2.0 (Ca), $\sim$0.7 (Si), $\sim$0.3 (S), and $\sim$0.9 (Ar) at around flare peaks. This abundance pattern is similar to those of active stars' coronae showing inverse first ionization potential (i-FIP) effects, i.e., elemental abundances decrease with decreasing FIP with a turnover at the low end of FIP. The abundances are almost constant during the flares, with an exception of Si which increases by a factor of $\sim$2 in the decay phase. The evolution of the Si abundance is consistent with a picture that the i-FIP plasma originates from the chromosphere evaporation and then mixes with the surrounding low-FIP biased materials. Flare-to-flare abundance varied by a factor of 2, agreeing with past observations of solar flares. Finally, we emphasize that Earth albedo data acquired by X-ray astronomy satellites like Suzaku and XRISM can significantly contribute to studies of solar physics.
description: 19 pages, 10 figures, accepted for publication in The Astrophysical Journal
LOFAR, a new low frequency radio telescope
Creators: name: Rottgering, H. J. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: LOFAR, the Low Frequency Array, is a large radio telescope consisting of approximately 100 soccer-field sized antenna stations spread over a region of 400 km in diameter. It will operate at frequencies from ~10 to 240 MHz, with a resolution at 240 MHz of better than an arcsecond. Its superb sensitivity will allow for studies of a broad range of astrophysical topics, including reionisation, transient radio sources and cosmic rays, distant galaxies and AGNs. In this contribution a status rapport of the LOFAR project and an overview of the science case is presented.
description: 6 Pages, including 1 postScript figure. To appear in the proceedings of the conference "Radio Galaxies: Past, present and future", Leiden, 11-15 Nov 2002
Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn$_3$P
Creators: name: Kotegawa, H.
name: Matsuda, M.
name: Ye, F.
name: Tani, Y.
name: Uda, K.
name: Kuwata, Y.
name: Tou, H.
name: Matsuoka, E.
name: Sugawara, H.
name: Sakurai, T.
name: Ohta, H.
name: Harima, H.
name: Takeda, K.
name: Hayashi, J.
name: Araki, S.
name: Kobayashi, T. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Antiferromagnet Mn$_3$P with Neel temperature $T_N=30$ K is composed of Mn-tetrahedrons and zigzag chains formed by three inequivalent Mn sites. Due to the nearly frustrated lattice with many short Mn-Mn bonds, competition of the exchange interactions is expected. We here investigate the magnetic structure and physical properties including pressure effect in single crystals of this material, and reveal a complex yet well-ordered helimagnetic structure. The itinerant character of this materials is strong, and the ordered state with small magnetic moments is easily suppressed under pressure, exhibiting a quantum critical point at $\sim1.6$ GPa. The remarkable mass renormalization, even in the ordered state, and an incoherent-coherent crossover in the low-temperature region, characterize an unusual electronic state in Mn$_3$P, which is most likely effected by the underlying frustration effect.
description: 10 pages, 12 figures, including the Supplemental Material, to be published in Physical Review Letters
A complete characterization of phase space measurements
Creators: name: Carmeli, C.
name: Cassinelli, G.
name: DeVito, E.
name: Toigo, A.
name: Vacchini, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We characterize all the phase space measurements for a non-relativistic particle.
description: 11 pages, latex, no figures, iopart style
Semilinear automorphisms of classical groups and quivers
Creators: name: Yang, Jinwei
name: Yun, Zhiwei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 11E39, 11E57, 17B40

description: For a classical group $G$ over a field $F$ together with a finite-order automorphism $θ$ that acts compatibly on $F$, we describe the fixed point subgroup of $θ$ on $G$ and the eigenspaces of $θ$ on the Lie algebra $\mathfrak{g}$ in terms of cyclic quivers with involution. More precise classification is given when $\mathfrak{g}$ is a loop Lie algebra, i.e., when $F=\mathbb{C}((t))$.
description: 14 pages, Accepted for publication in Science China Mathematics
EMPRESS. III. Morphology, Stellar Population, and Dynamics of Extremely Metal Poor Galaxies (EMPGs): Are EMPGs Local Analogs of High-$z$ Young Galaxies?
Creators: name: Isobe, Yuki
name: Ouchi, Masami
name: Kojima, Takashi
name: Shibuya, Takatoshi
name: Hayashi, Kohei
name: Rauch, Michael
name: Kikuchihara, Shotaro
name: Zhang, Haibin
name: Ono, Yoshiaki
name: Fujimoto, Seiji
name: Harikane, Yuichi
name: Kim, Ji Hoon
name: Komiyama, Yutaka
name: Kusakabe, Haruka
name: Lee, Chien-Hsiu
name: Mawatari, Ken
name: Onodera, Masato
name: Sugahara, Yuma
name: Yabe, Kiyoto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the morphology and stellar population of 27 extremely metal poor galaxies (EMPGs) at $z\sim0$ with metallicities of 0.01--0.1 Z$_{\odot}$. We conduct multi-component surface brightness (SB) profile fitting for the deep Subaru/HSC $i$-band images of the EMPGs with the {\sc Galfit} software, carefully removing the SB contributions of tails. We find that the EMPGs with a median stellar mass of $\log(M_{*}/{\rm M}_{\odot})=6.0$ have a median S{é}rsic index of $n=1.1$ and a median effective radius of $r_{\rm e}=200$ pc, suggesting that typical EMPGs have very compact disk. We compare the EMPGs with $z\sim6$ galaxies and local galaxies on the size-mass ($r_{\rm e}$-$M_*$) diagram, and identify that the majority of the EMPGs have a $r_{\rm e}$-$M_*$ relation similar to $z\sim0$ star-forming galaxies rather than $z\sim6$ galaxies. Not every EMPG is a local analog of high-$z$ young galaxies in the $r_{\rm e}$-$M_*$ relation. A spectrum of one pair of EMPG and tail, so far available, indicates that the tail is dynamically related to the EMPG with a median velocity difference of $ΔV=101\pm32$ km s$^{-1}$. This moderately-large $ΔV$ cannot be explained by the dynamics of the tail, but likely by the infall on the tail. For the first time, we may identify the metal-poor star-forming system just now infalling into the tail.
description: ApJ in Press
An Improved FPT Algorithm for the Flip Distance Problem
Creators: name: Feng, Qilong
name: Li, Shaohua
name: Meng, Xiangzhong
name: Wang, Jianxin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Given a set $\cal P$ of points in the Euclidean plane and two triangulations of $\cal P$, the flip distance between these two triangulations is the minimum number of flips required to transform one triangulation into the other. Parameterized Flip Distance problem is to decide if the flip distance between two given triangulations is equal to a given integer $k$. The previous best FPT algorithm runs in time $O^{*}(k\cdot c^{k})$ ($c\leq 2\times 14^{11}$), where each step has fourteen possible choices, and the length of the action sequence is bounded by $11k$. By applying the backtracking strategy and analyzing the underlying property of the flip sequence, each step of our algorithm has only five possible choices. Based on an auxiliary graph $G$, we prove that the length of the action sequence for our algorithm is bounded by $2|G|$. As a result, we present an FPT algorithm running in time $O^{*}(k\cdot 32^{k})$.
description: A preliminary version of this paper appeared at MFCS 2017
Landscape structure and climate drive population dynamics of an insect vector within intensely managed agroecoystems
Creators: name: Illan, Javier Gutierrez
name: Bloom, Elias
name: Wohleb, Carrie
name: Wenninger, Erik
name: Rondón, Silvia
name: Jensen, Andrew
name: Snyder, William
name: Crowder, David
Publisher: name: figshare
Year: 2020
Subjects: subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 50104 Landscape Ecology

description: Datasets associated with EAP19-0828 manuscript
Discourses of responsible gambling and gambling harm: observations from Victoria, Australia
Creators: name: Francis, Louise
name: Livingstone, Charles
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Within a neo-liberal economic orthodoxy, the gambling industry has succeeded in the discursive feat of transforming gambling from its previous pariah pastime status to normalized entertainment. This contemporary discourse of gambling as entertainment has repositioned gambling as harmless fun. The comfortable orthodoxy of ‘responsible gambling’ adopts language emphasizing concepts such as ‘personal responsibility’. A focus on the lack of self-control of delinquent users deflects attention away from harmful products, diminishing scrutiny of industry failure to appropriately address gambling harms. We analyzed data derived from interviews with stakeholders familiar with the gambling licensing process in Victoria, Australia, in order to identify if and how the discursive structures of this comfortable orthodoxy manifest in discussions on gambling. Data were derived from thematic analysis of 21 interviews with decision makers, industry advocates, and other stakeholders. Evidence highlights multiple recurring discursive structures of the ‘comfortable orthodoxy’, including the narrative of gambling as legalized recreation, personal choice and self-responsibility. Highlighting the pervasiveness of this discourse, these narratives were evident across the spectrum of informants. This research illustrates the way in which multiple gambling stakeholders deploy the discursive structures underpinning gambling regulation and operations. Discourses establish understanding of the nature of specific issues, and can influence responses to public health or other policy problems. In this instance, a discourse overwhelmingly favoring industry interests, has the potential to entrench and support harmful systems of exploitation and harm creation. Transforming the responsible gambling discourse is an important focus for public health activity concerned with reducing gambling related harm.
Representation of Semigroups in Rigged Hilbert Spaces: Subsemigroups of the Weyl-Heisenberg Group
Creators: name: Wickramasekara, S.
name: Bohm, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper studies how differentiable representations of certain subsemigroups of the Weyl-Heisenberg group may be obtained in suitably constructed rigged Hilbert spaces. These semigroup representations are induced from a continuous unitary representation of the Weyl-Heisenberg group in a Hilbert space. Aspects of the rigged Hilbert space formulation of time asymmetric quantum mechanics are also investigated within the context of the results developed here.
Ritter et al Supplemental File S1 Questionnaire Farmer.pdf
Creators: name: Ritter, Caroline
Publisher: name: figshare
Year: 2021
Subjects: subject: 70199 Agriculture, Land and Farm Management not elsewhere classified
subject: FOS: Other agricultural sciences

description: Supplemental File (Journal of Dairy Science): Herd health and production management visits on Canadiandairy cattle farms: Structure, goals, and topics discussed
Normalizing Constant Estimation with Gaussianized Bridge Sampling
Creators: name: Jia, He
name: Seljak, Uroš
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Machine Learning (cs.LG)
subject: Computation (stat.CO)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Normalizing constant (also called partition function, Bayesian evidence, or marginal likelihood) is one of the central goals of Bayesian inference, yet most of the existing methods are both expensive and inaccurate. Here we develop a new approach, starting from posterior samples obtained with a standard Markov Chain Monte Carlo (MCMC). We apply a novel Normalizing Flow (NF) approach to obtain an analytic density estimator from these samples, followed by Optimal Bridge Sampling (OBS) to obtain the normalizing constant. We compare our method which we call Gaussianized Bridge Sampling (GBS) to existing methods such as Nested Sampling (NS) and Annealed Importance Sampling (AIS) on several examples, showing our method is both significantly faster and substantially more accurate than these methods, and comes with a reliable error estimation.
description: Accepted by AABI 2019 Proceedings
Typhlotanais plicatus : Kudinova-Pasternak 1993
Creators: name: Błażewicz-Paszkowycz, Magdalena
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Typhlotanaidae
Typhlotanais
Typhlotanais plicatus

description: Typhlotanais plicatus Kudinova-Pasternak, 1993   (Fig. 77)
 Typhlotanais plicatus: Kudinova-Pasternak (1993) 127: 142–143.
 Material examined: one manca (K 41419), body length 1.5 mm, ANT XXII/3, PS 67/102-13, 65°34.32'– 65°34.40'S, 36°31.32'– 36°31'W, depth 4805– 4803 m, epibenthic sledge, 6 Mar 2005.
 Diagnosis: Pereonites 1–3 corrugated. Carapace oval, 1.3 times as long as wide. Antennule article-3 3.5 times as long as article-2.
 Distribution: The specimen collected during ANDEEP is the second record of the species. The first record was by Kudinova Pasternak (1993) in the Weddell Sea (62°36.4'– 62°36.4'S, 15°28.1'– 15°32.7'W).
 Remarks: T. plicatus and T. longimanus share a peculiar character – a corrugated pereonites 1–3. The species however can be distinguished by comparing the carapace, which is oval and 1.4 times as long as wide in T. plicatus, while it is rectangular and almost as long as wide in T. longimanus. More conspicuous differences are seen in article-1 of the antenna which is six times as long as wide in T. longimanus but only 3.5 times as long as wide in T. plicatus.
description: Published as part of Błażewicz-Paszkowycz, Magdalena, 2007, Figure 6. Typhlotanais Compactus, Female A In Family Nototanaidae Sieg, 1976 And Typhlotanaidae Sieg, 1984, pp. 1-141 in Zootaxa 1598 on pages 131-132, DOI: 10.5281/zenodo.178692
Transcending Human Rights Instrumentalism
Creators: name: Ganbat, Narantuya
Publisher: name: The Australian National University
Year: 2017
Subjects: domestic impacts of international human rights treaties
UN Convention on the Rights of Persons with Disabilities
Australia
Mongolia

description: Whether human rights treaties produce an impact on the ground is a highly contested question in international law. I engage in this debate in the present thesis offering a qualitative study of the implementation of the UN Convention on the Rights of Persons with Disabilities in Australia and Mongolia. The scholarship commonly understands human rights treaties in legalistic terms. Treaty outcomes are measured on the basis of the direct effects of their norms. State ratification and incorporation of treaty norms in domestic legal orders are perceived as the principal ways whereby human rights treaties penetrate into and transform domestic contexts. A common prescription for better treaty implementation is to increase their coercive enforcement. I call this view human rights instrumentalism and, in this thesis, argue that it offers a limited understanding of the role that the treaties play in national arenas. The thesis illustrates that, in the years following the adoption of the Disabilities Convention in 2006, vibrant legal and policy developments have taken place in the two countries studied. Those laws and policies have typically embraced the international law. Yet, when tracing their lineage, the Convention’s effects are seen to be largely indirect to those domestic legal reforms. At the same time, the research identifies a significant non-legal impact of the Convention, which, regardless of the particular norms of the treaty or domestic incorporation thereof, profoundly affects the social fabric of Australia and Mongolia. The thesis argues that such an outcome emanates essentially from the symbolic or political power of the treaty, and describes the subtle ways in which the Disabilities Convention functions as a social symbol in the two domestic contexts.
title: Will VCs Invest at a Distance During and After a Crisis? Evidence from the 2008 Financial Crisis
Creators: name: Wilson, Samuel
Publisher: name: Old Dominion University Libraries
Year: 2021

description: We will explore how large-scale exogenous crises impact venture capital firms’ investment scope decisions during and after a crisis. We will analyze a population of 11,564 funding rounds announced between 2005Q1 until 2012Q4 in the US. Analysis shows that the 2008 Financial Crisis caused a short-term change in the geographical areas where VCs invest, and after the crisis firms tend to look further afield to locate viable investment targets. This study will contribute to entrepreneurial finance research by offering theoretical and empirical insights on how major crises affect venture capital investment and entrepreneurial activities.
Electroweak symmetry breaking after LEP1 and LEP2
Creators: name: Barbieri, Riccardo
name: Pomarol, Alex
name: Rattazzi, Riccardo
name: Strumia, Alessandro
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a generic 'universal' theory of electroweak symmetry breaking, non fine-tuned heavy new physics affects the low-energy data through four parameters, which include and properly extend the generally insufficient S and T. Only by adding the LEP2 data to the global electroweak fit, can all these four form factors be determined and deviations from the SM be strongly constrained. Several of the recently proposed models (little Higgs, gauge bosons in extra dimensions or Higgsless models in 5D) are recognized to be 'universal' in a straightforward way after a proper definition of the effective vector boson fields. Among various applications, we show that proposed Higgsless models in 5D, when calculable, do not provide a viable description of electroweak symmetry breaking in their full range of parameters.
description: 16 pages, 5 figures. Ref.s added, discussion of low energy observables improved
Analysis of cosmic rays' atmospheric effects and their relationships to cutoff rigidity and zenith angle using Global Muon Detector Network data
Creators: name: Mendonça, R. R. S.
name: Wang, C.
name: Braga, C. R.
name: Echer, E.
name: Lago, A. Dal
name: Costa, J. E. R.
name: Munakata, K.
name: Li, H.
name: Liu, Z.
name: Raulin, J. -P.
name: Kuwabara, T.
name: Kozai, M.
name: Kato, C.
name: Rockenbach, M.
name: Schuch, N. J.
name: Jassar, H. K. Al
name: Sharma, M. M.
name: Tokumaru, M.
name: Duldig, M. L.
name: Humble, J. E.
name: Evenson, P.
name: Sabbah, I.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Cosmic rays are charged particles whose flux observed at Earth shows temporal variations related to space weather phenomena and may be an important tool to study them. The cosmic ray intensity recorded with ground-based detectors also shows temporal variations arising from atmospheric variations. In the case of muon detectors, the main atmospheric effects are related to pressure and temperature changes. In this work, we analyze both effects using data recorded by the Global Muon Detector Network (GMDN), consisting of four multidirectional muon detectors at different locations, in the period between 2007 and 2016. For each GMDN directional channel, we obtain coefficients that describe the pressure and temperature effects. We then analyze how these coefficients can be related to the geomagnetic cutoff rigidity and zenith angle associated with cosmic-ray particles observed by each channel. In the pressure effect analysis, we found that the observed barometric coefficients show a very clear logarithmic correlation with the cutoff rigidity divided by the zenith angle cosine. On the other hand, the temperature coefficients show a good logarithmic correlation with the product of the cutoff and zenith angle cosine after adding a term proportional to the sine of geographical latitude of the observation site. This additional term implies that the temperature effect measured in the northern hemisphere detectors is stronger than that observed in the southern hemisphere. The physical origin of this term and of the good correlations found in this analysis should be studied in detail in future works.
The Heavy Fermion Contributions to the Massive Three Loop Form Factors
Creators: name: Blümlein, Johannes
name: Marquard, Peter
name: Rana, Narayan
name: Schneider, C.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: form factor: pseudoscalar
fermion: heavy
differential equations
numerical calculations
renormalization group
boundary condition
Taylor expansion
master integral
decoupling
Euclidean
moment
pole

description: We compute the $n_h$ terms to the massive three loop vector-, axialvector-, scalar- and pseudoscalar form factors in a direct analytic calculation using the method of large moments. This method has the advantage, that the master integrals have to be dealt with only in their moment representation, allowing to also consider quantities which obey differential equations, which are not first order factorizable (elliptic and higher), already at this level. To obtain all the associated recursions, up to 8000 moments had to be calculated. A new technique has been applied to solve the associated differential equation systems. Here the decoupling is performed such, that only minimal depth $\epsilon$--expansions had to be performed for non--first-order factorizing systems, minimizing the calculation of initial values. The pole terms in the dimensional parameter $\epsilon$ can be completely predicted using renormalization group methods, as confirmed by the present results. A series of contributions at $O(\epsilon^0)$ have first order factorizable representations. For a smaller number of color--zeta projections this is not the case. All first order factorizing terms can be represented by harmonic polylogarithms. We also obtain analytic results for the non--first-order factorizing terms by Taylor series in a variable $x$, for which we have calculated at least 2000 expansion coefficients, in an approximation. Based on this representation the form factors can be given in the Euclidean region and in the region $q^2 \approx 0$. Numerical results are presented.
Experiments in vortex avalanches
Creators: name: Altshuler, E.
name: Johansen, T. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Avalanche dynamics is found in many phenomena spanning from earthquakes to the evolution of species. It can be also found in vortex matter when a type II superconductor is externally driven, for example, by increasing the magnetic field. Vortex avalanches associated with thermal instabilities can be an undesirable effect for applications, but "dynamically driven" avalanches emerging from the competition between intervortex interactions and quenched disorder constitute an interesting scenario to test theoretical ideas related with non-equilibrium dynamics. However, differently from the equilibrium phases of vortex matter in type II superconductors, the study of the corresponding dynamical phases - in which avalanches can play a role - is still in its infancy. In this paper we critically review relevant experiments performed in the last decade or so, emphasizing the ability of different experimental techniques to establish the nature and statistical properties of the observed avalanche behavior.
description: To be published in Reviews of Modern Physics April 2004. 17 pages
Phytoseius neoamba Ueckermann & Loots 1985
Creators: name: Ueckermann, Eddie A.
name: Zannou, Ignace D.
name: De Moraes, Gilberto J.
name: Oliveira, Anibal R.
name: Hanna, Rachid
name: Yaninek, John S.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Phytoseius
Phytoseius neoamba

description: Phytoseius neoamba Ueckermann & Loots   (Fig. 8)
 Phytoseius (Pennaseius) neoamba Ueckermann & Loots, 1985: 35.
 Phytoseius neoamba, Moraes et al., 2004: 249.
FEMALE. (Specimens measured. South Africa: holotype and 7 paratypes)
Dorsum. Dorsal shield 297(288–304) [287] long and 147(144–150) [144] wide; mostly smooth, with few anterolateral and dorsocentral striae. Female idiosomal setal pattern 12A:5A/JV-3,4:ZV. Setae j1 22(21–23) [22], j3 31(28–33) [31], j4 12(7–13) [7], j5 11(9–13) [9], j6 12(9–16) [14], J2 13(10–16) [14], J5 12(10–14) [11], z2 10 (9–12) [11], z3 25(23–29) [24], z4 14(10–19) [15], z5 10(9–12) [10], Z4 26(24–29) [29], Z5 40(36–42) [39], s4 36 (33–39) [36], s6 35 (32–37) [35], r3 34(33–35) [33], R1 14(10–18) [15]. Setae j1, j3, z3, Z4, Z5, s4, s6 and r3 thick, long and serrate; J5 short, serrate; other setae of medium length and smooth.
Peritreme. Extending almost anterior to j1.
Venter. Sternal shield smooth, with posterior margin straight; distances between St1–St3 54(51–54) [54], St2–St2 66(65–68) [65]. Genital shield smooth; distance between St5–St5 56(53–59) [54]. Ventrianal shield vase-shaped, smooth, anterior margin straight, 97(93–104) [93] long, 47(44–50) [47] wide at level of Zv2 and 54(51–56) [54] wide at level of anus; preanal pores posterior to Jv2. Caudoventral setae smooth, except Jv5, thick and strongly serrate.
 Chelicera. Movable digit 23(23–24) [23] long, with 1 tooth; fixed digit 21(20–22) [20] long, with 3 teeth and a pilus dentilis.
Spermatheca. Calyx tubular toward atrium and dish-shaped near vesicle, 11(9–12) [12] long; major duct inflate near atrium.
Legs. Macrosetae of leg IV knobbed; Sbt IV 29 (28–31) [28], Stt IV 27 (26–28) [27].
 Specimens examined. Holotype and 7 paratype females, South Africa: Gauteng Province, Roodeplaat Dam Nature Reserve, near Pretoria, on Triumfetta sonderii, 23-XI-1981, E.A. Ueckermann.
 Remarks: The presence of setae J2 and R 1 in this species places it in the plumifer species group (Chant & Yoshida-Shaul 1992a; Chant & McMurtry 1994).
 World distribution. South Africa.
description: Published as part of Ueckermann, Eddie A., Zannou, Ignace D., De Moraes, Gilberto J., Oliveira, Anibal R., Hanna, Rachid & Yaninek, John S., 2007, Phytoseiid mites of the subfamily Phytoseiinae (Acari: Phytoseiidae) from sub-Saharan Africa, pp. 1-20 in Zootaxa 1658 (1) on pages 13-14, DOI: 10.11646/zootaxa.1658.1.1, http://zenodo.org/record/5104092
title: Stay at Home: Flight-to-Safety and Home Bias in U.S. ETFs During COVID-19 Pandemic
Creators: name: Yousefi, Hamed
Publisher: name: Old Dominion University Libraries
Year: 2021

description: We examine the relations between dollar flows of U.S. traded ETFs with exposure to the U.S., Europe, Asia, and the rest of the world during the COVID-19 crisis utilizing a Markov Switching Model (MSVAR). We find convincing evidence that investors use ETFs to gain exposure to foreign markets. This study differs from the new stream of research on the effects of COVID-19 on financial markets and investors’ reactions in two major ways. First, we follow the money by using actual dollars of fund flows, whereas previous studies use returns. Second, we investigate the existence of two distinct regimes during this pandemic: (1) a ‘‘normal” regime when all ETFs receive positive flows and (2) a ‘‘panic” regime which emerges when the number of infected people surges in a global location and investors shift their funds from non-U.S. ETFs to U.S.-exposed ETFs. This portfolio rebalancing away from international funds toward U.S. ETFs, is consistent with the flight-to-safety effect and surge in “home bias” investing during the adverse economic shock. Furthermore, we find evidence of rapid portfolio adjustments of U.S. investors in response to the COVID-19 outbreak in a given geographic location.
Faint Standards for ZYJHK from the UKIDSS and VISTA Surveys
Creators: name: Leggett, S. K.
name: Cross, Nicholas J. G.
name: Hambly, Nigel C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The currently defined "UKIRT Faint Standards" have JHK magnitudes between 10 and 15, with K_median=11.2. These stars will be too bright for the next generation of large telescopes. We have used multi-epoch observations taken as part of the UKIRT Infrared Deep Sky Survey (UKIDSS) and the Visible and Infrared Survey Telescope for Astronomy (VISTA) surveys to identify non-variable stars with JHK magnitudes in the range 16-19. The stars were selected from the UKIDSS Deep Extragalactic Survey (DXS) and Ultra Deep Survey (UDS), the WFCAM calibration data (WFCAMCAL08B), the VISTA Deep Extragalactic Observations (VIDEO) and UltraVISTA. Sources selected from the near-infrared databases were paired with the Pan-STARRS Data Release 2 of optical to near-infrared photometry and the Gaia astrometric Data Release 2. Colour indices and other measurements were used to exclude sources that did not appear to be simple single stars. From an initial selection of 169 sources, we present a final sample of 81 standard stars with ZYJHK magnitudes, or a subset, each with 20 to 600 observations in each filter. The new standards have Ks_median=17.5. The relative photometric uncertainty for the sample is <0.006 mag and the absolute uncertainty is estimated to be
description: Accepted on January 27 2020 for publication in MNRAS
The Polarized Three-Loop Anomalous Dimensions from On-Shell Massive Operator Matrix Elements
Creators: name: Behring, A.
name: Blümlein, J.
name: De Freitas, A.
name: Goedicke, A.
name: Klein, S.
name: Von Manteuffel, A.
name: Schneider, C.
name: Schönwald, K.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: We calculate all contributions $\propto T_F$ to the polarized three-loop anomalous dimensions in the M-scheme using massive operator matrix elements and compare to results in the literature. This includes the complete anomalous dimensions $\gamma_{qq}^{(2),\rm PS}$ and $\gamma_{qg}^{(2)}$. We also obtain the complete two-loop polarized anomalous dimensions in an independent calculation. While for most of the anomalous dimensions the usual direct computation methods in Mellin $N$-space can be applied since all recurrences factorize at first order, this is not the case for $\gamma_{qg}^{(2)}$. Due to the necessity of deeper expansions of the master integrals in the dimensional parameter $\varepsilon = D-4$, we had to use the method of arbitrary high moments to eliminate elliptic contributions in intermediate steps. 4000 moments were generated to determine this anomalous dimension and 2640 moments turned out to be sufficient. As an aside, we also recalculate the contributions $\propto T_F$ to the three-loop QCD $\beta$-function.
3-Dimensional Core-Collapse
Creators: name: Fryer, C. L.
name: Warren, M. S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we present the results of 3-dimensional collapse simulations of rotating stars for a range of stellar progenitors. We find that for the fastest spinning stars, rotation does indeed modify the convection above the proto-neutron star, but it is not fast enough to cause core fragmentation. Similarly, although strong magnetic fields can be produced once the proto-neutron star cools and contracts, the proto-neutron star is not spinning fast enough to generate strong magnetic fields quickly after collapse and, for our simulations, magnetic fields will not dominate the supernova explosion mechanism. Even so, the resulting pulsars for our fastest rotating models may emit enough energy to dominate the total explosion energy of the supernova. However, more recent stellar models predict rotation rates that are much too slow to affect the explosion, but these models are not sophisticated enough to determine whether the most recent, or past, stellar rotation rates are most likely. Thus, we must rely upon observational constraints to determine the true rotation rates of stellar cores just before collapse. We conclude with a discussion of the possible constraints on stellar rotation which we can derive from core-collapse supernovae.
description: 34 pages (5 of 17 figures missing), For full paper, goto http://qso.lanl.gov/~clf/papers/rot.ps.gz accepted by ApJ
Assessment of the effect of polymers combination and effervescent component on the drug release of swellable gastro-floating tablet formulation through compartmental modeling-based approach
Creators: name: Syaiful Choiri
name: T. N. Saifullah Sulaiman
name: Rohman, Abdul
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: The aim of this research was to assess the effect of polymer blend and effervescent components on the floating and swelling behaviors of swellable gastro-floating formulation as well as the drug release through a compartmental modeling analysis. Swellable gastro-floating formulation of freely water-soluble drug, metformin HCl as a drug model, was formulated and developed using D-optimal design. Polymer combination between interpolymer complex (IPC) (poly-vinyl acetate-copolymer methacrylate) and hydroxy propyl methyl cellulose (HPMC), and effervescent components were studied and optimized in this work. Several factors affecting the drug release behavior were determined e.g. swelling behavior, erosion behavior, and floating behavior were studied as well as the drug release through compartmental modeling analysis. The results revealed that the hydrophilic polymer was responsible for gas entrapment formed from effervescent reaction, meanwhile IPC contributed on maintaining the swollen matrix integrity through intermolecular polymer interaction. In addition, effervescent components played fundamental role in the formation of porous system as well as inducing burst release effect. Compartmental modeling provided different outlook about the drug release. Presence of IPC at a high proportion (10–15%) of the polymer blend modulated the changes of pattern of the drug release kinetics and mechanism. Finally, compartmental modeling-based approach was more adequate to describe the drug release kinetics and mechanism compared to the monophasic equation model correlating with process understanding of the drug release from swellable gastro-floating formulation.
Fibrations, Divisors and Transcendental Leaves
Creators: name: Pereira, Jorge Vitorio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32J18; 32Q55; 37F75

description: We will use flat divisors, and canonically associated singular holomorphic foliations, to investigate some of the geometry of compact complex manifolds. The paper is mainly concerned with three distinct problems: the existence of fibrations, the topology of smooth hypersurfaces and the topological closure of transcendental leaves of foliations.
On the possibility of "correlation cooling" of ultracold neutral plasmas
Creators: name: Pohl, T.
name: Pattard, T.
name: Rost, J. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recent experiments with ultracold neutral plasmas show an intrinsic heating effect based on the development of spatial correlations. We investigate whether this effect can be reversed, so that imposing strong spatial correlations could in fact lead to cooling of the ions. We find that cooling is indeed possible. It requires, however, a very precise preparation of the initial state. Quantum mechanical zero-point motion sets a lower limit for ion cooling.
Bogoliubov shadow bands in the normal state of superconducting systems with strong pair fluctuations
Creators: name: Domanski, T.
name: Ranninger, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: On the basis of a scenario where electron pairing is induced by resonant two-particle scattering (the Boson Fermion model), we show how precursors of the superconducting state - in form of overdamped Bogoliubov modes - emerge in the normal state upon approaching the transition temperature from above. This result is obtained by a renormalization technique based on continuous unitary transformations (the flow equations), projecting out the coherent contributions in the electron spectral function from an incoherent background.
description: 4 pages, 2 figures
First ground-level laboratory test of the two-phase xenon emission detector RED-100
Creators: name: Akimov, D. Yu.
name: Belov, V. A.
name: Bolozdynya, A. I.
name: Efremenko, Yu. V.
name: Etenko, A. V.
name: Galavanov, A. V.
name: Gouss, D. V.
name: Gusakov, Yu. V.
name: Kdib, Dj. Ed.
name: Khromov, A. V.
name: Konovalov, A. M.
name: Kornoukhov, V. N.
name: Kovalenko, A. G.
name: Kozlova, E. S.
name: Kumpan, A. V.
name: Lukyashin, A. V.
name: Melikyan, Yu. A.
name: Moramzin, V. V.
name: Razuvaeva, O. E.
name: Rudik, D. G.
name: Shakirov, A. V.
name: Simakov, G. E.
name: Sosnovtsev, V. V.
name: Stogov, Yu. V.
name: Vasin, A. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: RED-100 is a two-phase detector for study of coherent elastic scattering of reactor electron antineutrinos off xenon atomic nuclei. The detector contains a total of 200 kg of liquid xenon in a titanium cryostat with 160 kg of xenon in active volume inside a Teflon-made light collection cage associated with electrode system. The active volume is viewed by two arrays of nineteen 3"-diameter Hamamatsu R11410-20 PMTs assembled in two planes on top and bottom. The electrode system is equipped with an electron shutter (a patented device) to reduce a "spontaneous" single-electron noise. The detector was tested in a ground-level laboratory. The obtained results demonstrate that detection of coherent elastic scattering of reactor antineutrinos off xenon nuclei at Kalinin nuclear power plant with the RED-100 detector is feasible with a threshold of 4 ionization electrons.
description: 23 pages, 13 figures