cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
$α$-attractor from superconformal E-models in brane inflation
Creators: name: Sabir, Mudassar
name: Ahmed, Waqas
name: Gong, Yungui
name: Lu, Yizhou
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the large extra dimensional braneworld inflation, Friedmann equation is modified to include a quadratic term in energy density with an additional parameter $λ$ called brane tension in addition to the usual linear term. The high energy brane corrections modify the slow-roll parameters and affect the behaviour of inflation. We analyse the superconformal inflation for E-models and find that there exist $α$-attractors in brane inflation. The predictions for the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$ are computed numerically, and approximate analytic formulas in the high energy limit have been given for the observable $n_s$ and $r$. The constraints on the model parameters are obtained by using Planck 2018 and BICEP2 observational data.
description: 11 pages, 3 figures
BHLS$_2$, a New Breaking of the HLS Model and its Phenomenology
Creators: name: Benayoun, M.
name: DelBuono, L.
name: Jegerlehner, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Previous studies have shown that the Hidden Local Symmetry (HLS) Model, supplied with appropriate symmetry breaking, provides an Effective Lagrangian (BHLS) able to encompass a large number of processes within a unified framework. A global fit provides a simultaneous description of the $e^+ e^-$ annihilation into $π^+π^-$, $π^0γ$, $ηγ$, $π^+π^-π^0$, $K^+K^-$, $K_L K_S$, the dipion spectrum in the $τ$ decay and other light meson partial widths. Additional breaking schemes extend its scope to spacelike processes within a new framework (BHLS$_2$). The phenomenology previously explored with BHLS is revisited in the BHLS$_2$ context with emphasis on the $Φ$ mass region. It is shown that BHLS$_2$ addresses the close spacelike region covered by NA7 and Fermilab data; also,the Lattice QCD pion form factor is accurately predicted by BHLS$_2$ using fits to annihilation data only. These channels contribution to $a_μ$ over the range of validity of BHLS$_2$ is shown to strongly reduce the former BHLS systematics. The uncertainty on $a_μ^{\rm th}(\sqrt{s}< 1.05$ GeV) is much improved compared to standard approaches relying on direct integration methods of measured spectra. Using the BHLS$_2$ results, the leading order HVP contribution to the muon anomalous moment is $a_μ^{HVP-LO}= 686.65 \pm 3.01 +(+1.16,-0.75)_{syst.}$ in units of $10^{-10}$. Using a conservative estimate for the light--by--light contribution, our evaluation is $a_μ^{\rm th}=\left [11\,659\,175.96 \pm 4.17 +(+1.16,-0.75)_{syst.}\right]\times 10^{-10}$. The $ρ^0γ$ mixing in dispersive and LQCD approaches is discussed and may amount to a shift $δa_μ[ππ]_{ργ} = +(3.10\pm0.31)\times 10^{-10}$ at LO+NLO, presently treated as additional systematics. Taking this shift into account, $a_μ^{\rm th}-a_μ^{\rm BNL}$ exhibits a significance not smaller than $3.8 σ$.
description: Final version corrected and extended. Version accepted for publication in EPJC
On a certain formulation of the Einstein equations
Creators: name: Nurowski, Pawel
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We define a certain differential system on an open set of $R^6$. The system locally defines a Lorentzian 4-manifold satisfying the Einstein equations. The converse statement is indicated and its details are postponed to the furthcoming paper.
description: 7 pages, Latex
Stop Filling the World with Trash: A Study of Circular Waste Management Strategies in NYC
Creators: Gonzalez Samot, Luis Argelis
Publisher: name: Columbia University
Year: 2020
Subjects: Refuse and refuse disposal--Management
City planning--Economic aspects
City planning--Environmental aspects
Global warming
Recycling (Waste, etc.)

description: This thesis seeks to understand the impacts and ramifications of solid waste generation and waste management strategies in New York City. It is concerned with the relationship between solid waste and the mass production and mass consumption patterns associated with the take-make-waste industrial economic model. Additionally, the investigation examines the circular economy as an alternative to take-make-waste. Special attention is given to the environmental and societal implications of continuing in the current linear industrial system and the urgency to move towards a circular economy. “Stop Filling the World with Trash: A Study of Circular Waste Management Strategies in NYC” addresses the following questions: what are the current municipal solid waste management strategies? Where does the solid waste go post-collection and how is it transported? What policies are being considered to address the negative externalities related to solid waste and Waste Management? What role can the circular economy play in minimizing the negative environmental and societal impacts of waste management? What are the implications of adopting a circular economy? Does moving to a circular economy require changes to the regulatory framework? The findings suggest that shifting to a circular or sustainable economic model is urgent. If we continue in the linear system of mass production and mass consumption, the negative effects to people and the environment may become irreversible. However, making this paradigm shift will entail a concerted effort among the public and private sectors, and civil society.
title: Kirchens, Max: Die Zoologie der Diplomatie. Geschichte und Bedeutung diplomatischer Tiergeschenke (Young Academics: Politikwissenschaft, Bd. 4), 144 S., Tectum, Baden-Baden 2023.
Creators: name: Dipper, Christof
Publisher: name: Springer VS
Year: 2025

description: Ziel des Autors Max Kirchens ist eine Übersicht von „wirklich universaler Geltung“ (S. 5) – nicht gerade ein bescheidener Anspruch für eine politikwissenschaftliche Masterarbeit, die freilich eine „Pionierarbeit“ zu sein beansprucht (ebd.). Es ist ja auch etwas Wahres dran an diesem Anspruch, denn letzten Endes handelt es sich um eine anthropologische Konstante, wie der Mensch mit Geschenken umgeht, wenn es sich um Tiere handelt, und der Mensch in die Kategorie der Staatslenker gehört. Ob Karl der Große von Harun al-Raschid einen Elefanten bekam oder Richard Nixon von Mao Tse-tung einen Panda – stets geht es um die Frage, ob die damit beabsichtigte Wirkung eintrat oder wenn nicht, was die Gründe dafür waren. Und diese Gründe waren letztlich stets politische.
Pseudo 3-D deposition and large-strain consolidation modeling of tailings deep deposits
Creators: name: Fredlund, Murray
name: Donaldson, Matt
name: Chaudhary, Krishna
Publisher: name: The University of British Columbia
Year: 2016

description: The design of deep deposits requires the numerical modeling of large-strain consolidation to represent the release of water with time. Such numerical modeling in the state of practice has traditionally involved the practice of running a single 1-D large-strain consolidation numerical model at the center of the deposit and inferring long-term performance from such numerical modeling. The difficulties with such a methodology are that the 3-D effects of depositing in a tailings facility are not fully considered. Full 3-D numerical modeling of the large-strain consolidation process has been performed however it remains technically challenging to model the deposition process in a 3-D model. Therefore the present paper presents using the pseudo 3-D methodology and coupling it with a depositional model in order to obtain an accounting for the 3-D effects of such a numerical analysis. The deposition process is represented through a 3-D methodology to determine the true surface of the tailings. The consolidation process is modeled through a discretization of the consolidation models into a series of 1-D numerical models such as to represent the final surface as a 3-D representation of the consolidation models vs. time as well as the tailings volumes as a function of time. The methodology is outlined in the paper and its utilization in a typical case study is examined.
Radius-dependent gauge unification in AdS5
Creators: name: Choi, Kiwoon
name: Kim, Hyung Do
name: Kim, Ian-Woo
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the relation of the 4-dimensional low energy coupling of bulk gauge boson in a slice of AdS5 to the 5-dimensional fundamental couplings as a function of the orbifold radius R. This allows us to address the gauge coupling unification in AdS5 by means of the radius running as well as the conventional momentum running. We then compute the radius dependence of 1-loop low energy couplings in generic AdS5 theory with 4-dimensional supersymmetry, and discuss the low energy predictions when the 5-dimensional couplings are assumed to be unified.
description: 11 pages, 2 figures, revtex, v3: analysis was generalized to S^1/Z_2*Z_2 orbifolding
Streptocarpus montanus Oliv.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Gesneriaceae
Streptocarpus
Streptocarpus montanus

description: Streptocarpus montanus Oliv.  —
Habit: Herb.
Habitat: LMWF; up to 2 800 m. Distribution: IIIa.
 Voucher: Near Castle Forest Station, Alt. 2071 m, 30 Jan. 2015, SAJIT 003013 (HIB).
References: Bussmann (1993, 1994), Bussmann & Beck (1995a, 1998), Darbyshire (2006), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Stories of Self and Other: Four In-Service Social Studies Teachers Reflect on Their International Professional Development
Creators: Patterson, Timothy
Publisher: name: Columbia University
Year: 2013
Subjects: Education
Teachers--Training of

description: This study is an examination of the stories four social studies teachers told after participating in one international professional development program. Drawing on theories of postcolonialism, this narrative inquiry uses interviews, observations, and artifacts to investigate if and to what degree travel to and study in China influences the understandings of one group of in-service social studies teachers. Its focus is the extent to which meeting the Other influenced the participants' conceptualizations of global education and whether or not this experience allowed one group of American teachers to challenge their perceptual lenses with regards to their social studies curricula. An ethnographic understanding of the contexts in which these teachers learn about Chinese history and culture supports the analyses of their narratives. The participants' narratives indicate that a variety of elements of the study tour reinforced the notion that they were innocent observers of China. With few exceptions, they failed to locate themselves within the phenomenon of globalization, particularly in their examinations of the impact of Westernization in China. Rather than influencing their interpretations of the content of their curricula, the study tour appeared to enhance the understandings about Chinese history and culture that each participant brought to the experience. The structure of the tour, which the participants referred to as "the bubble," may account for these limited effects. The narratives created in this study suggest that traveling to China through this study tour was one life experience among many, though their immediate retellings implied an embellished conceptualization of what it meant to travel abroad. While all four participants spoke with great enthusiasm and passion about the far-reaching effects that their participation has had on them as both teachers and individuals, articulating those effects proved problematic. Rather, the perceptual lens that each participant brought with him or her to this experience was the most significant factor in determining the perceived results of the study tour. The participants also expressed increased enthusiasm for teaching about global topics, with all four participants claiming their participation in the study tour strengthened their desire to develop both the perceptual and substantive dimensions of their students' global perspectives.
OPERAS-P Deliverable D5.1: Requirements and Specifications
Creators: name: OAPEN
Publisher: name: Zenodo
Year: 2021
Subjects: open scholarly communication
OPERAS
service
open access
platform
Research Infrastructure

description: This document describes the redevelopment of the Directory of Open Access Books (DOAB) and the requirements of the platform. DOAB being redeveloped on the same model of the Open Access Publishing in European Networks (OAPEN) platform, this redevelopment is being done in two steps. The first step is to migrate the OAPEN platform, and a second one is for the DOAB platform based on the lessons learned from the first migration. Described in this document are the reasons for such order and the
 specifications of the first migration as well as the adaptations needed for the second migration.
title: Bemerkungen zum inversen Problem der optischen Spektroskopie inhomogener Materie
Creators: name: Keßler, Franz
Publisher: name: Goltze
Year: 1996
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 530

description: Die optische Spektroskopie spielt im Rahmen der Bestimmung von Materialeigenschaften insofern eine bedeutende Rolle, als das Licht, und zwar unter Einschluß der nichtsichtbaren Spektralbereiche des UV und IR, eine Sonde darstellt, die nichtzerstörend, "berührungslos" und sowohl aus größerer Distanz als auch im Vakuum eingesetzt werden kann. Die Materialanalyse basiert dabei auf der Vermessung des Reflexions- und Transmissionsvermögens der Strahlung in ihren spektralen Abhängigkeiten als Funktion des Einfallswinkels und des Polarisationszustandes des Lichtes. Da bei optisch inhomogener Materie das Reflexions- und das Transmissionsvermögen von dem räumlichen Verlauf der Brechzahl "n" und der Absorptionszahl "k", im Innern der Probe abhängen, erhebt sich das "inverse Problem". Das ist das Problem des eindeutigen Rückschlusses aus der integralen optischen Messung außerhalb der Probe auf das im konkreten Fall innerhalb der Materialprobe vorliegende Profil der komplexen Brechungszahl n = (n-i*k) bzw. der mikrophysikalischen Dispersionsparameter.
Die vorliegende Arbeit diskutiert spezielle Aspekte dieses Umkehrungsproblems. Das dabei konkret ins Auge gefaßte Material entspricht dem inhomogenen Halbleiter, dessen komplexe Brechungszahl z.B. mit der räumlich inhomogenen Konzentration freier Ladungsträger variiert. Die optische Inhomogenität kann auch, alleine oder zusätzlich, durch strukturelle Modifikationen, d.h. durch innere Spannungen, Amorphisierung bei der Ionenimplantation, einen Aufbau aus verschiedenen Materialien (vergl. z.B. die Supergitter und die MIS-Strukturen) etc., bedingt sein.
Diskussionspunkte des inversen Problems sind hier die Fragen der mathematischen Behandlung der optischen Inhomogenität mittels des Matrizenkalküls und der Anpassung der Inhomogenitätsparameter an die experimentell ermittelten Spektralstrukturen als Optimierungsaufgabe. Ein wesentliches Spezifikum der Problemstellung ist dadurch gegeben, daß die Möglichkeit der Reproduktion der gegebenen Spektren bei einem gegebenen bzw. physikalisch sinnvollen Dispersionsmechanismus vorhanden sein muß. Als Dispersionsmechanismen kommen alle bekannten mikrophysikalischen Responsemodelle in Betracht. Speziell für die Halbleiter mit freien Ladungsträgern und im Spektralbereich auf der langwelligen Seite der Absorptionskante wird hier dazu die Drude-Theorie in ihrer quantenmechanischen Erweiterung zur Erfassung des dispersiven und absorptiven Einflusses der freien Landungsträger betrachtet.
Supplementary Material for the ICAPS 2022 paper "Neural Network Heuristic Functions for Classical Planning: Bootstrapping and Comparison to Other Methods"
Creators: name: Ferber, Patrick
name: Geißer, Florian
name: Trevizan, Felipe
name: Helmert, Malte
name: Hoffmann, Jörg
Publisher: name: Zenodo
Year: 2022
Subjects: Classical Planning, Heuristic Search, Machine Learning, Learning Heuristics

description: This repositories contains the code, benchmarks, and the experimental results for the ICAPS 2022 paper "Neural Neural Network Heuristic Functions for Classical Planning: Bootstrapping and Comparison to Other Methods" by Patrick Ferber, Florian Geißer, Felipe Trevizan, Malte Helmert, and Jörg Hoffmann.
Elliptic fibrations associated with the Einstein spacetimes
Creators: name: Nurowski, Pawel
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Given a conformally nonflat Einstein spacetime we define a fibration $P$ over it. The fibres of this fibration are elliptic curves (2-dimensional tori) or their degenerate counterparts. Their topology depends on the algebraic type of the Weyl tensor of the Einstein metric. The fibration $P$ is a double branched cover of the bundle of null direction over the spacetime and is equipped with six linearly independent 1-forms which satisfy certain relatively simple system of equations.
description: 15 pages, Latex
Callitriche anisoptera Schotsman
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Plantaginaceae
Callitriche
Callitriche anisoptera

description: Callitriche anisoptera Schotsman  —
Habit: Herb.
Habitat: BZ, UMF, HZ, AZ; 2 800–4 000 m. Distribution: II.
 Voucher: Meru Mount Kenya Lodge area and tracks to waterfalls and Lake Ellis, Alt. 3000– 3500 m, 16–18 Aug. 1985, Robertson et al. 3989A (EA).
References: Hedberg & Hedberg (2003), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Pulsar timing in extreme mass ratio binaries: a general relativistic approach
Creators: name: Kimpson, Tom
name: Wu, Kinwah
name: Zane, Silvia
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The detection of a pulsar (PSR) in a tight, relativistic orbit around a supermassive or intermediate mass black hole - such as those in the Galactic centre or in the centre of Globular clusters - would allow for precision tests of general relativity (GR) in the strong-field, non-linear regime. We present a framework for calculating the theoretical time-frequency signal from a PSR in such an Extreme Mass Ratio Binary (EMRB). This framework is entirely relativistic with no weak-field approximations and so able to account for all higher-order strong-field gravitational effects, relativistic spin dynamics, the convolution with astrophysical effects and the combined impact on the PSR timing signal. Specifically we calculate both the spacetime path of the pulsar radio signal and the complex orbital and spin dynamics of a spinning pulsar around a Kerr black hole, accounting for spacetime curvature and frame dragging, relativistic and gravitational time delay, gravitational light bending, temporal and spatial dispersion induced by the presence of plasma along the line of sight and relativistic aberration. This then allows for a consistent time-frequency solution to be generated. Such a framework is key for assessing the use of PSR as probes of strong field GR, helping to inform the detection of an EMRB system hosting a PSR and, most essentially, for providing an accurate theoretical basis to then compare with observations to test fundamental physics.
description: 19 pages, 15 Figures. Accepted for publication in MNRAS
Storming Heaven With Memories
Creators: Mohaiemen, Naeem
Publisher: name: Columbia University
Year: 2019
Subjects: Ethnology
History
South Asians
Communism
Historiography

description: This dissertation follows the historians of left politics in Bangladesh, a country that went through a century of independence and reversal under three signs–British India, Pakistan, and Bangladesh. While the country kept reimagining itself under new identities, the idea of communism was underground and persecuted in all three periods, although the forms of struggle and the shape of ideas kept changing. This research is an ethnography of forms of writing history, the purchase of the celebration or censure of the work, and new socialities and rearranged hierarchies that emerge from this process. For a small but significant group of journalists, publishers, activists, and survivors, the project of arguing, understanding, documenting, writing down, and reenacting particular moments of Bangladesh history is a vital and presentist task.
Callitriche keniensis Schotsman
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Plantaginaceae
Callitriche
Callitriche keniensis

description: Callitriche keniensis Schotsman  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF, HZ, AZ; 2 100–4 300 m. Distribution: IIIa.
 Voucher: Timau Track, Alt. 3 421 m, 21 Jan. 2015, SAJIT 002771 (HIB).
References: Hedberg & Hedberg (2003), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Chemical or Biological Activity in Open Chaotic Flows
Creators: name: Karolyi, Gy.
name: Pentek, A.
name: Toroczkai, Z.
name: Tel, T.
name: Grebogi, C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Condensed Matter (cond-mat)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We investigate the evolution of particle ensembles in open chaotic hydrodynamical flows. Active processes of the type A+B --> 2B and A+B --> 2C are considered in the limit of weak diffusion. As an illustrative advection dynamics we consider a model of the von Kármán vortex street, a time periodic two-dimensional flow of a viscous fluid around a cylinder. We show that a fractal unstable manifold acts as a catalyst for the process, and the products cover fattened-up copies of this manifold. This may account for the observed filamental intensification of activity in environmental flows. The reaction equations valid in the wake are derived either in the form of dissipative maps or differential equations depending on the regime under consideration. They contain terms that are not present in the traditional reaction equations of the same active process: the decay of the products is slower while the productivity is much faster than in homogeneous flows. Both effects appear as a consequence of underlying fractal structures. In the long time limit, the system locks itself in a dynamic equilibrium state synchronized to the flow for both types of reactions. For particles of finite size an emptying transition might also occur leading to no products left in the wake.
description: 16 pages, two-column RevTex, 13 ps figs embedded, subm. to PRE
Labidarge nimbata Konow 1907
Creators: name: Taeger, Andreas
name: París, Mercedes
name: Nieves-Aldrey, Jose Luis
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Labidarge
Labidarge nimbata

description: Labidarge nimbata Konow, 1907
A junior subjective synonym of Scobina semifusca (Norton, 1867), synonymy by Smith (1992: 25).
Type. Labidarge nimbata Konow, 1907d: 220. Holotype ♂ “ Mexico ” (MNCN _ Ent 81544, MNCN Cat. Tipos Nº 2262, see http://dx.doi.org/10.6084/m9.figshare.765337). Type locality: Mexico.
Discussion. Smith (1992: 25) designated the specimen as lectotype. In his work Konow (1907d) described three species. For L. nimbata he noted “Die Type befindet sich im Naturhist. National-Museum in Madrid ” [translated: ‘The type is housed in the Natural History National Museum in Madrid’], similar for L. pullipennis, whereas he noted for L. tegularis “Die Typen gleichfalls im Madrider Museum” [‘The types are also in the Museum in Madrid’]. From this content is clear, that the first two species are based on holotypes, and tegularis on syntypes.
description: Published as part of Taeger, Andreas, París, Mercedes & Nieves-Aldrey, Jose Luis, 2014, The type specimens of sawflies (Hymenoptera: Symphyta) of the Museo Nacional de Ciencias Naturales, Madrid, pp. 103-138 in Zootaxa 3790 (1) on page 126, DOI: 10.11646/zootaxa.3790.1.5, http://zenodo.org/record/4914035
Prospects for Observing an Invisibly Decaying Higgs Boson in the t anti-t H Production at the LHC
Creators: name: Kersevan, B. P.
name: Malawski, M.
name: Richter-Was, E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The prospects for observing an invisibly decaying Higgs boson in the t anti-t H production at LHC are discussed. An isolated lepton, reconstructed hadronic top-quark decay, two identified b-jets and large missing transverse energy are proposed as the final state signature for event selection. Only the Standard Model backgrounds are taken into account. It is shown that the t anti-t Z, t anti-t W, b anti-b Z and b anti-b W backgrounds can individually be suppressed below the signal expectation. The dominant source of background remains the t anti-t production. The key for observability will be an experimental selection which allows further suppression of the contributions from the t anti-t events with one of the top-quarks decaying into a tau lepton. Depending on the details of the final analysis, an excess of the signal events above the Standard Model background of about 10% to 100% can be achieved in the mass range m_H= 100-200 GeV.
description: Final version as accepted by EPJC
Nozioni di q-calcolo nell'ambito del quantum calculus
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2021
Subjects: q-calculus
quantum calculus
physics

description: Il testo propone alcune nozioni di q-calcolo nell'ambito del quantum calculus. Si daranno definizioni, dimostrazioni ed esercizi, partendo dai q-numeri e q-binomi. Segue la q-derivazione.
Provable Tensor Ring Completion
Creators: name: Huang, Huyan
name: Liu, Yipeng
name: Zhu, Ce
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Tensor completion recovers a multi-dimensional array from a limited number of measurements. Using the recently proposed tensor ring (TR) decomposition, in this paper we show that a d-order tensor of dimensional size n and TR rank r can be exactly recovered with high probability by solving a convex optimization program, given n^{d/2} r^2 ln^7(n^{d/2})samples. The proposed TR incoherence condition under which the result holds is similar to the matrix incoherence condition. The experiments on synthetic data verify the recovery guarantee for TR completion. Moreover, the experiments on real-world data show that our method improves the recovery performance compared with the state-of-the-art methods.
title: Abhandlungen der Braunschweigischen Wissenschaftlichen Gesellschaft Band 44. 1993
Creators: name: :None
Publisher: name: Goltze
Year: 1994
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 902

description: Abhandlungen der Braunschweigischen Wissenschaftlichen Gesellschaft, vol. 44. 1993
Revisiting the large strain consolidation test for oil sands
Creators: name: Jeeravipoolvarn, S.
name: Masala, S.
name: Zhang, C.
name: Moore, T.
Publisher: name: The University of British Columbia
Year: 2016

description: The large strain consolidation test is a one-dimensional multi-step loading compression test used to obtain one-dimensional volume change properties of high water content material. These properties include compressibility (stress-strain behaviour) and hydraulic conductivity (ability to transmit water). The test is used worldwide for slurry and tailings work including for Alberta oil sands tailings since the 1970’s. This paper revisits this test method for use in the oil sands through the authors’ laboratory practice and a literature review. Key practical considerations and learnings are summarized to date.
Stories of the Skin: Exploring Women’s Skin through Oral History
Creators: Brooks, Ellen Brigid
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Oral history
subject: Women's studies
subject: Sociology
subject: FOS: Sociology
subject: Tattooing
subject: Scars

description: The purpose of this oral history thesis is to examine women’s relationship with their skin, focusing on tattoos and scars that tell stories that are considered essential to a narrator’s identity. My initial research demonstrated that skin is inherently linked with the idea of self and the presentation of self to the outside world. I began this project with an interest in exploring the skin’s potential as a permanent physical archive, canvas, protective barrier and more. In order to do so, and to build on my academic research, it seemed obvious that oral history was an ideal vehicle because it would allow me to insert actual women’s voices into the conversation. While every narrator would have an individual story to tell, living with and interpreting the stories of our skin is a universal experience. The concentration on scars and tattoos (explained in greater detail below) would serve to narrow the focus. The project would be an attempt to give voice and agency to women who have something to say about what their skin says about them. My original interest in skin and tattoos and scars came about organically, from conversations about my own tattoos, entertaining story swapping about “battle scars”, and an extremely compelling article from the New York Times about young Israelis getting tattoos to match their grandparents’ Holocaust tattoos. The article struck me especially, because of the diverse reactions and charged conversations that the tattoos inspired. It left me thinking about tattoos and scars, and tattoos as scars, and what it means to have these memories permanently marked on our bodies. As I began my oral history work I was motivated by the potential that oral history had to bring these stories and themes to light and now I am excited to present them publicly through the project website (www.storiesoftheskin.com) and to start a larger conversation about skin and embodiment.
Stranded, Isolated, Cloistered, and Confined: Women Queering Space in Twenty-First Century Italian Cinema
Creators: Palanti, Alessia
Publisher: name: Columbia University
Year: 2019
Subjects: Italian literature
Sexual minorities
Motion pictures, Italian
Lesbianism in motion pictures
Feminism

description: At the crossroads of Italian studies; film studies; and women’s, gender, and sexuality studies, my dissertation investigates a group of films by Italian women filmmakers whose narratives center on women and unfold in constrained spaces. Confinement is generally considered antithetical to feminist projects that imagine emancipation to be synonymous with freedom of movement. Why would women filmmakers, then, making films in the new millennium choose to stage their narratives in cloistered spaces? I find that the spatial restrictions are not responding to familiar dialectics. First feature films Benzina (Gasoline, Monica Stambrini 2001), Aprimi il cuore (Aprimi il cuore, Giada Colagrande 2002), and Via Castellana Bandiera (A Street in Palermo, Emma Dante 2013) find ways to place us snugly inside a familiar space, a space that comes with a standardized set of expectations and associations: the apartment with the nuclear family; Rome’s GRA (grande-raccordo anulare; Rome’s ring road) with travel around the capital; the narrow street as a classically Italian impasse. But when the films have us “overstay our welcome,” these spaces no longer align with our original understanding, instead, we begin to see the kinds of exclusions that have come to define those standardized narratives. And so, the films queer space, and by queering space we might come to see that the world we inhabit is much more dynamic than our traditional narratives might have us believe. I begin by analyzing the only documentary in my project, Vogliamo anche le rose (We Want Roses Too, Alina Marazzi, 2007). This film is a launching pad from which to establish a more robust backdrop of feminist history, philosophies, and concepts that re-emerge in subsequent chapters. Vis-à-vis the historiography I provide, I argue that each of the films’ restricted spatial configurations incite tense interpersonal dynamics within female pairings that dramatize both local and global political tensions within real feminist and lesbian collectives. Allusions to these long-lasting tensions in women’s political history provide not only an image of its past but also of its present, and perhaps its future. In other words, the films are a hard mirror to look into for feminist and lesbian activists and for women whose lives are affected by their (in)decisions, inclusions, and exclusions.
title: Abhandlungen der Braunschweigischen Wissenschaftlichen Gesellschaft Band 48. 1997
Creators: name: :None
Publisher: name: Goltze
Year: 1998
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 902

description: Abhandlungen der Braunschweigischen Wissenschaftlichen Gesellschaft, vol. 48. 1997
Vortex Lattice Structure and Topological Superconductivity in the Quantum Hall Regime
Creators: name: Chaudhary, Gaurav
name: MacDonald, Allan H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Chiral topological superconductors are expected to appear as intermediate states when a quantum anomalous Hall system is proximity coupled to an s-wave superconductor and the magnetization direction is reversed. In this paper we address the edge state properties of ordinary quantum Hall systems proximity coupled to s-wave superconductors, accounting explicitly for Landau quantization. We find that the appearance of topological superconducting phases with an odd number of Majorana edge modes is dependent on the structure of the system's vortex lattice. More precisely, vortex lattices containing odd number of superconducting flux quanta per unit cell, always support an even number of chiral edge channels and are therefore adiabatically connected to normal quantum Hall insulators. We discuss strategies to engineer chiral topological superconductivity in proximity-coupled quantum Hall systems by manipulating vortex lattice structure.
Hall invariants, homology of subgroups, and characteristic varieties
Creators: name: Matei, Daniel
name: Suciu, Alexander I.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20J05, 57M05 (primary), 20E07, 52C35 (secondary)

description: Given a finitely-generated group G, and a finite group Γ, Philip Hall defined δ_Γto be the number of factor groups of G that are isomorphic to Γ. We show how to compute the Hall invariants by cohomological and combinatorial methods, when G is finitely-presented, and Γbelongs to a certain class of metabelian groups. Key to this approach is the stratification of the character variety by the jumping loci of the cohomology of G, with coefficients in rank 1 local systems over a suitably chosen field \K. Counting relevant torsion points on these "characteristic" subvarieties gives δ_Γ(G). In the process, we compute the distribution of prime-index, normal subgroups K of G according to the dimension of the the first homology group of K with \K coefficients, provided \char\K does not divide the index of K in G. In turn, we use this distribution to count low-index subgroups of G. We illustrate these techniques in the case when G is the fundamental group of the complement of an arrangement of either affine lines in \C^2, or transverse planes in \R^4.
description: 34 pages, 3 figures
A fast field-cycling MRI relaxometer for physical contrasts design and pre-clinical studies in small animals
Creators: name: Romero, Javier A.
name: Rodriguez, Gonzalo G.
name: Anoardo, Esteban
Publisher: name: arXiv
Year: 2019
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: We present a fast field-cycling NMR relaxometer with added magnetic resonance imaging capabilities. The instrument operates at a maximum proton Larmor frequency of 5 MHz for a sample volume of 35 mL. The magnetic field homogeneity across the sample is 1400 ppm. The main field is generated with a notch-coil electromagnet of own design, fed with a current whose stability is 220 ppm. We show that images of reasonable quality can still be produced under such conditions. The machine is being designed for concept testing of the involved instrumentation and specific contrast agents aimed for field-cycling magnetic resonance imaging applications. The general performance of the prototype was tested through localized relaxometry experiments, T1-dispersion weighted images, temperature maps and T1-weighted images at different magnetic field intensities. We introduce the concept of positive and negative contrast depending on the use of pre-polarized or non-polarized sequences. The system is being improved for pre-clinical studies in small animals.
description: 35 pages with 8 figures
title: Data Augmentation for Supervised Code Translation Learning
Creators: name: Chen, Binger
name: Golebiowski, Jacek
name: Abedjan, Ziawasch
Publisher: name: ACM
Year: 2024
Subjects: subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::004 Datenverarbeitung; Informatik
subject: supervised learning
subject: Data-driven program translation
subject: translation techniques

description: Data-driven program translation has been recently the focus of several lines of research. A common and robust strategy is supervised learning. However, there is typically a lack of parallel training data, i.e., pairs of code snippets in the source and target language. While many data augmentation techniques exist in the domain of natural language processing, they cannot be easily adapted to tackle code translation due to the unique restrictions of programming languages. In this paper, we develop a novel rule-based augmentation approach tailored for code translation data, and a novel retrieval-based approach that combines code samples from unorganized big code repositories to obtain new training data. Both approaches are language-independent. We perform an extensive empirical evaluation on existing Java-C#-benchmarks showing that our method improves the accuracy of state-of-the-art supervised translation techniques by up to 35%.
Entrepreneurship Learning Gardens und forschendes Lernen. Das Beispiel ländlicher Schulen in Südafrika.
Creators: name: Forcher-Mayr, Matthias
name: Mahlknecht, Sabine
Publisher: name: Zenodo
Year: 2020
Subjects: research-based learning
capability approach
critical entrepreneurship education
entrepreneurship education
food security
nutritional education
school
school gardening
agricultural education
South Africa

description: Sprouting Entrepreneurs ist ein österreich-südafrikanisches Kooperationsprojekt zur Einführung von Entrepreneurship Education in marginalisierten ländlichen Schulen. Forschendes Lernen ist Bestandteil von Entrepreneurship Projekten, die thematisch an den lokalen gesellschaftlichen Herausforderungen von Ernährungsunsicherheit, Revitalisierung der Landwirtschaft und Jugendarbeitslosigkeit anknüpfen. Forschendes Lernen zielt auf das Verstehen gesellschaftlicher Herausforderungen, die Umsetzung von Projekten sowie die Reflexion des eigenen Lernprozesses ab.
Strain effects on phase transitions in 2H-NbSe₂ and Ca₃Ru₂O₇
Creators: Wieteska, Jedrzej Robert
Publisher: name: Columbia University
Year: 2021
Subjects: Physics
Condensed matter--Research
Electrons
Anisotropy
Ruthenium compounds
Strains and stresses

description: Strain control of correlated electron phenomena has been a theme of condensed matter research in recent years. Two primary areas of investigation have been controllable symmetry breaking and measurements of susceptibility with respect to elastic deformation and in this thesis we present an example of each. In 2H-NbSe₂ explore the effect of lattice anisotropy on the charge-ordered superconductor. Using a novel strain apparatus, we measure the superconducting transition temperature 𝑇_{sc} as a function of uniaxial strain. It is found that 𝑇_{sc} is independent of tensile(compressive) strain below a threshold of 0.2% (0.1%), but decreases strongly with larger strains with an average rate of 1.3𝐊/% (2.5𝐊/%). Transport signatures of charge order are largely unaffected as a function of strain. We employ theoretical considerations to show that the change in the behavior of 𝑇_{sc} with strain coincides with a phase transition from 3𝐐 to 1𝐐 charge order in the material. The spectral weight on one of the Fermi surface bands is found to change strongly as a consequence of this phase transition, providing a pathway to tune superconducting order. In the bilayer ruthenate Ca₃(Ru₁₋ₓTiₓ)₂O₇ a material that is unique among correlated insulators for its hybrid improper ferroelectricity and, at elevated temperatures, transitioning to a polar metallic phase, we investigate phase textures and their susceptibility to strain. Through multi-messenger low-temperature infrared and Kelvin probe nano-imaging, we reveal a spontaneous striped texture of coexisting insulating and metallic domains in single crystals across their insulator-metal phase transition at T=50-100K. Under in situ uniaxial strain, we image anisotropic nucleation and growth of these domains, rationalized through on-demand control of a spontaneous Jahn-Teller distortion. Through spatially correlative transmission electron microscopy and nano-scale strain mapping, we also reveal the selective interplay between this textured phase coexistence and domain boundaries between polar twins in these crystals. We study the strain susceptibility of the striped phase mixture and explain our results in terms of homogeneous phase susceptibilities and the strain susceptibility of domains. We study the anisotropy in bulk response functions (resistivity and elastosusceptibility) and we find that the results are consistent with a network model of the phase texture. We also perform low-temperature infrared nanoimaging and elastosusceptibility of the nonequilibrium current-driven metal-insulator transition in Ca₃(Ru₁₋ₓTiₓ)₂O₇. Our results are consistent with the emerging consensus explanation in terms of Joule heating.
Exact Dynamics of the SU(K) Haldane-Shastry Model
Creators: name: Yamamoto, Takashi
name: Saiga, Yasuhiro
name: Arikawa, Mitsuhiro
name: Kuramoto, Yoshio
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The dynamical structure factor $S(q,ω)$ of the SU(K) (K=2,3,4) Haldane-Shastry model is derived exactly at zero temperature for arbitrary size of the system. The result is interpreted in terms of free quasi-particles which are generalization of spinons in the SU(2) case; the excited states relevant to $S(q,ω)$ consist of K quasi-particles each of which is characterized by a set of K-1 quantum numbers. Near the boundaries of the region where $S(q,ω)$ is nonzero, $S(q,ω)$ shows the power-law singularity. It is found that the divergent singularity occurs only in the lowest edges starting from $(q,ω) = (0,0)$ toward positive and negative q. The analytic result is checked numerically for finite systems via exact diagonalization and recursion methods.
description: 35 pages, 3 figures, youngtab.sty (version 1.1)
Callitriche oreophila Schotsman
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Plantaginaceae
Callitriche
Callitriche oreophila

description: Callitriche oreophila Schotsman  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF, HZ, AZ; up to 4 300 m. Distribution: II.
 Voucher: Sirimon Track, Alt. 2 766 m, 16 Mar. 2009, Kirika et al. KMK45 (EA).
References: Fries & Fries (1925), Young & Peacock (1985), Bussmann (1993, 1994), Hedberg & Hedberg (2003), Abdi (2013), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
A new class of inhomogeneous cosmological models with Yang-Mills fields
Creators: name: Shchigolev, V. K.
name: Zhuravlev, V. M.
name: Chervon, S. V.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Exact solutions corresponding to spherically symmetric inhomogeneous nonstationary Tolman metrics are obtained for the self-consistent
description: 7 pages, Latex
alpha :a constant that is not a constant?
Creators: name: Fiorentini, G.
name: Ricci, B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We review the observational information on the constancy of the fine structure constant alpha. We find that small improvements on the measurement of ^{187}Re lifetime can provide significant progress in exploring the range of variability suggested by QSO data. We also discuss the effects of a time varying alpha on stellar structure and evolution. We find that radioactive dating of ancient stars can offer a new observational window.
description: 9 pages with 3 ps figures included, to appear on the Proc. of ESO-CERN-ESA Symposium on Astronomy, Cosmology and Fundamental Physics, Garching bei Munchen, Germany March 4-7, 2002
Callitriche vulcanicola Schotsman
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Plantaginaceae
Callitriche
Callitriche vulcanicola

description: Callitriche vulcanicola Schotsman  —
Habit: Herb.
Habitat: UMF, HZ, AZ; 2 900–4 100 m. Distribution: II.
 Voucher: Burguret Track, Alt. 3000 m, 22 Nov. 1967, Hedberg 4403 (EA, BR).
References: Hedberg & Hedberg (2003), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464