cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Hall Physics - hierarchies and CFT techniques
Creators: name: Hansson, T. H.
name: Hermanns, M.
name: Simon, S. H.
name: Viefers, S. F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The fractional quantum Hall effect, being one of the most studied phenomena in condensed matter physics during the past thirty years, has generated many groundbreaking new ideas and concepts. Very early on it was realized that the zoo of emerging states of matter would need to be understood in a systematic manner. The first attempts to do this, by Haldane and Halperin, set an agenda for further work which has continued to this day. Since that time the idea of hierarchies of quasiparticles condensing to form new states has been a pillar of our understanding of fractional quantum Hall physics. In the thirty years that have passed since then, a number of new directions of thought have advanced our understanding of fractional quantum Hall states, and have extended it in new and unexpected ways. Among these directions is the extensive use of topological quantum field theories and conformal field theories, the application of the ideas of composite bosons and fermions, and the study of nonabelian quantum Hall liquids. This article aims to present a comprehensive overview of this field, including the most recent developments.
description: added section on experimental status, 59 pages+references, 3 figures
The Women Librarians of the Land-Grant Colleges in the West and Midwest, 1862-1920: A Preliminary Study
Creators: name: Jorgensen, Rachel O.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008
Subjects: Land-grant colleges and universities--United States--History
Academic libraries--United States--History
Women librarians--Employment--United States
Librarians--United States--History
Women librarians--West(U.S.)--History

description: This paper focuses on the history of women librarians of the land-grant universities in the West and Midwest during the last half of the 19th century and the first two decades of the 20th century. A history of the general situation of the land-grant colleges during this time period and the new curriculum in agriculture and the mechanical arts is provided. This new curriculum required a new type of library that greatly differed from the libraries common to higher education before this time period. These changes occur alongside the emergence of Librarianship not only as a new profession, but also a new and socially appropriate vocation for educated women. The hiring practices of the land-grant college libraries, with regards to its librarians, are discussed within this historical milieu.
Production of unstable heavy neutrinos in proto-neutron stars
Creators: name: Albertus, C.
name: Masip, M.
name: Pérez-García, M. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the production of a class of heavy sterile neutrinos $ν_h$ in proto-neutron stars. The neutrinos, of mass around $50$ MeV, have a negligible mixing with the active species but relatively large dimension-5 electromagnetic couplings. In particular, a magnetic dipole moment $μ\approx 10^{-6}$ GeV$^{-1}$ implies that they are thermally produced through $e^+ e^-\to \bar ν_h ν_h$ in the early phase of the core collapse, whereas a heavy--light transition moment $μ_{\rm tr}\approx 10^{-8}$ GeV$^{-1}$ allows their decay $ν_h\to ν_i γ$ with a lifetime around $10^{-3}$ s. This type of electromagnetic couplings has been recently proposed to explain the excess of electron-like events in baseline experiments. We show that the production and decay of these heavy neutrinos would transport energy from the central regions of the star to distances $d\approx 400$ km, providing a very efficient mechanism to enhance the supernova shock front and heat the material behind it.
description: 13 pages, 4 figures
Scutellaria glabra Leonard
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Scutellaria
Scutellaria glabra

description: Scutellaria glabra Leonard
Platanillo (CR).
 Terrestrial herbs or shrubs. Distribution in PILA 600–2200 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest, cloud forest, low elevation oak forest. Global distribution: Costa Rica, Panama. Records: D. Solano 4288 (BM, INB, PMA).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Increasing Teacher and Librarian Collaborative Projects Through Library Visibility
Creators: name: Griffith, Baily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Librarian-Teacher cooperation
Library media specialists
School librarianship

description: This study describes a survey of National Board certified school librarians across North
Carolina. The survey was conducted to determine the visibility of the school library
program as well as the types and frequency of collaborative projects that took place
between classroom teachers and school librarians during the 2012-2013 school year.
Exceptional versus superPoincaré algebra as the defining symmetry of maximal supergravity
Creators: name: Ananth, Sudarshan
name: Brink, Lars
name: Majumdar, Sucheta
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe how one may use either the superPoincaré algebra or the exceptional algebra to construct maximal supergravity theories in the light-cone formalism. The d=4 construction shows both symmetries albeit in a non-linearly realized manner. In d=11, we find that we have to choose which of these two symmetries to use, in constructing the theory. In order to understand the other "unused" symmetry, one has to perform a highly non-trivial field redefinition. We argue that this shows that one cannot trust counterterm arguments that do not take the full symmetry of the theory into account. Finally we discuss possible consequences for Superstring theory and M-theory.
description: 22 pages
How much is said in a microblog? A multilingual inquiry based on Weibo and Twitter
Creators: name: Liao, Han-Teng
name: Fu, King-wa
name: Hale, Scott A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computation and Language (cs.CL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: H.5.3, H.5.4

description: This paper presents a multilingual study on, per single post of microblog text, (a) how much can be said, (b) how much is written in terms of characters and bytes, and (c) how much is said in terms of information content in posts by different organizations in different languages. Focusing on three different languages (English, Chinese, and Japanese), this research analyses Weibo and Twitter accounts of major embassies and news agencies. We first establish our criterion for quantifying "how much can be said" in a digital text based on the openly available Universal Declaration of Human Rights and the translated subtitles from TED talks. These parallel corpora allow us to determine the number of characters and bits needed to represent the same content in different languages and character encodings. We then derive the amount of information that is actually contained in microblog posts authored by selected accounts on Weibo and Twitter. Our results confirm that languages with larger character sets such as Chinese and Japanese contain more information per character than English, but the actual information content contained within a microblog text varies depending on both the type of organization and the language of the post. We conclude with a discussion on the design implications of microblog text limits for different languages.
description: 9 pages, 4 figures WebSci 2015
Entanglement Entropy and Variational Methods: Interacting Scalar Fields
Creators: name: Cotler, Jordan
name: Mueller, Mark T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a variational approximation to the entanglement entropy for scalar $ϕ^4$ theory in 1+1, 2+1, and 3+1 dimensions, and then examine the entanglement entropy as a function of the coupling. We find that in 1+1 and 2+1 dimensions, the entanglement entropy of $ϕ^4$ theory as a function of coupling is monotonically decreasing and convex. While $ϕ^4$ theory with positive bare coupling in 3+1 dimensions is thought to lead to a trivial free theory, we analyze a version of $ϕ^4$ with infinitesimal negative bare coupling, an asymptotically free theory known as precarious $ϕ^4$ theory, and explore the monotonicity and convexity of its entanglement entropy as a function of coupling. Within the variational approximation, the stability of precarious $ϕ^4$ theory is related to the sign of the first and second derivatives of the entanglement entropy with respect to the coupling.
description: 44 pages, 15 figures; v2 contains a new section on the renormalization group flow of entanglement entropy; other minor additions, changes, and corrections
Limits on the Dark Matter from AMS-02 antiproton and positron fraction data
Creators: name: Lu, Bo-Qiang
name: Zong, Hong-Shi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive limits on the dark matter annihilation cross section and lifetime using measurements of the AMS-02 antiproton ratio and positron fraction data. In deriving the limits, we consider the scenario of secondary particles accelerated in supernova remnants (SNRs) which has been argued to be able to reasonably account for the AMS-02 high energy positron/antiproton fraction data. We parameterize the contribution of secondary particles accelerated in SNRs and then fit the observational data within the conventional cosmic ray propagation model by adopting the GALPROP code. We use the likelihood ratio test to determine the 95$\%$ confidence level upper limits of the possible dark matter (DM) contribution to the antiproton/positron fractions measured by AMS-02. Our limits are stronger than that set by the Fermi-LAT gamma-ray Pass 8 data of the dwarf spheroidal satellite galaxies. We also show that the solar modulation (cosmic ray propagation) parameters can play a non-negligible role in modifying the constraints on the dark matter annihilation cross section and lifetime for $m_χ<100$ GeV ($m_χ>100$ GeV), where $m_χ$ is the rest mass of the dark matter particles. Using this results, we also put limits on the effective field theory of dark matter.
Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn SNe
Creators: name: Pastorello, A.
name: Wang, X. -F.
name: Ciabattari, F.
name: Bersier, D.
name: Mazzali, P. A.
name: Gao, X.
name: Xu, Z.
name: Zhang, J. -J.
name: Tokuoka, S.
name: Benetti, S.
name: Cappellaro, E.
name: Elias-Rosa, N.
name: Harutyunyan, A.
name: Huang, F.
name: Miluzio, M.
name: Mo, J.
name: Ochner, P.
name: Tartaglia, L.
name: Terreran, G.
name: Tomasella, L.
name: Turatto, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present spectroscopic and photometric data of the Type Ibn supernova (SN) 2014av, discovered by the Xingming Observatory Sky Survey. Stringent pre-discovery detection limits indicate that the object was detected for the first time about 4 days after the explosion. A prompt follow-up campaign arranged by amateur astronomers allowed us to monitor the rising phase (lasting 10.6 days) and to accurately estimate the epoch of the maximum light, on 2014 April 23 (JD = 2456771.1 +/- 1.2). The absolute magnitude of the SN at the maximum light is M(R) = -19.76 +/- 0.16. The post-peak light curve shows an initial fast decline lasting about 3 weeks, and is followed by a slower decline in all bands until the end of the monitoring campaign. The spectra are initially characterized by a hot continuum. Later on, the temperature declines and a number of lines become prominent mostly in emission. In particular, later spectra are dominated by strong and narrow emission features of He I typical of Type Ibn supernovae (SNe), although there is a clear signature of lines from heavier elements (in particular O I, Mg II and Ca II). A forest of relatively narrow Fe II lines is also detected showing P-Cygni profiles, with the absorption component blue-shifted by about 1200 km/s. Another spectral feature often observed in interacting SNe, a strong blue pseudo-continuum, is seen in our latest spectra of SN 2014av. We discuss in this paper the physical parameters of SN 2014av in the context of the Type Ibn supernova variety.
description: 20 pages, 11 figures, 9 tables. Accepted for publication by MNRAS on Nov 6, 2015
Use, Needs and Barriers to Use of Information and Library Services by International Agency Staff
Creators: name: Browder, Kerry
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Information needs
Information resources--Use studies
Technology--Information services--Use studies

description: Libraries serve an increasing number of remote users. Within academic and special libraries, remote users comprise geographically dispersed users, including users in low- and middle-income countries. The libraries that serve users in low- and middle-income countries may insufficiently understand the needs of and barriers to library use among remote users in those areas. This paper reports the results of a study done to examine the extent of and barriers to use of library services among international staff at an international non-profit. The study first sought to determine the differences in usage levels of library resources among international staff and U.S.-based staff and then to identify the information needs and barriers to use of library resources and services among international staff. The results presented here indicate that lack of library and bibliographic instruction contribute to lower usage levels and that infrastructure in low- and middle-income countries may further inhibit library use.
Optimal convergence for adaptive IGA boundary element methods for weakly-singular integral equations
Creators: name: Feischl, Michael
name: Gantner, Gregor
name: Haberl, Alexander
name: Praetorius, Dirk
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In a recent work, we analyzed a weighted-residual error estimator for isogeometric boundary element methods in 2D and proposed an adaptive algorithm which steers the local mesh-refinement of the underlying partition as well as the multiplicity of the knots. In the present work, we give a mathematical proof that this algorithm leads to convergence even with optimal algebraic rates. Technical contributions include a novel mesh-size function which also monitors the knot multiplicity as well as inverse estimates for NURBS in fractional-order Sobolev norms.
Scutellaria isocheila Donn. Sm.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Scutellaria
Scutellaria isocheila

description: Scutellaria isocheila Donn.Sm.
 Terrestrial herbs.Distribution in PILA 1400– 1400 m, mixed forest in transition to cloud forest.Global distribution: Costa Rica, Panama. Records: F. González 773 (INB, PMA) .
 ε -PILA Scutellaria talamancana A.Pool
 Terrestrial herbs. Distribution in PILA 1100–1200 m, mixed forest in transition to low elevation forest. Global distribution: endemic to Costa Rica. Records: M. Grayum 10909 (INB, MO).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Cartesian Kerr-Schild variation on the Newman-Janis ansatz
Creators: name: Rajan, Del
name: Visser, Matt
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Newman-Janis trick is a procedure, (not even really an ansatz), for obtaining the Kerr spacetime from the Schwarzschild spacetime. This 50 year old trick continues to generate heated discussion and debate even to this day. Most of the debate focusses on whether the Newman-Janis procedure can be upgraded to the status of an algorithm, or even an inspired ansatz, or is it just a random trick of no deep physical significance. (That the Newman-Janis procedure very quickly led to the discovery of the Kerr-Newman spacetime is a point very much in its favour.) In the current article we will not answer these deeper questions, we shall instead present a much simpler alternative variation on the theme of the Newman--Janis trick that might be easier to work with. We shall present a 2-step version of the Newman-Janis trick that works directly with the Kerr-Schild "Cartesian" metric presentation of the Kerr spacetime. That is, we show how the original 4-step Newman-Janis procedure can, (using the interplay between oblate spheroidal and Cartesian coordinates), be reduced to a considerably cleaner 2-step process.
description: V1: 10 pages; V2; 10 pages (reformatted); 7 more references; some additional discussion; legal name change for first author
MPEC 2023-Q84 : 2023 QM2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QM2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Use of Full-Text Resources by Philosophy Students at UNC-Chapel Hill: A Citation Analysis
Creators: name: Okrent, Nicholas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001
Subjects: Information systems--Special subjects--humanities
Citation analysis

description: This study addresses the issue of how important full-text electronic resources are to the advanced research of undergraduate and graduate philosophy students. The fact that students in the humanities tend to rely on resources that are often not available in full-text electronic format suggests that this format is of somewhat marginal importance to philosophy students, but no empirical studies have verified this. By performing a citation analysis of undergraduate honors theses and masters theses completed at UNC-Chapel Hill between 1998 and 2000, the researcher presents empirical evidence suggesting that students performing high-level philosophy research at UNC-Chapel Hill during this period made little use of material available in full-text electronic form.
Subverting Massive MIMO by Smart Jamming
Creators: name: Pirzadeh, Hessam
name: Razavizadeh, S. Mohammad
name: Björnson, Emil
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider uplink transmission of a massive multi-user multiple-input multiple-output (MU-MIMO) system in the presence of a smart jammer. The jammer aims to degrade the sum spectral efficiency of the legitimate system by attacking both the training and data transmission phases. First, we derive a closed-form expression for the sum spectral efficiency by taking into account the presence of a smart jammer. Then, we determine how a jammer with a given energy budget should attack the training and data transmission phases to induce the maximum loss to the sum spectral efficiency. Numerical results illustrate the impact of optimal jamming specifically in the large limit of the number of base station (BS) antennas.
description: To appear in IEEE Wireless Communications Letters, 4 pages, 3 figures
Hubbard model with Rashba or Dresselhaus spin-orbit coupling and Rotated Anti-ferromagnetic Heisenberg Model
Creators: name: Sun, Fadi
name: Ye, Jinwu
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this work, we investigate the possible dramatic effects of Rashba or Dresselhaus spin-orbit coupling (SOC) on fermionic Hubbard model in a 2d square lattice. In the strong coupling limit, it leads to the Rotated Anti-ferromagnetic Heisenberg model which is a new class of quantum spin model. For a special equivalent class, we identify a new spin-orbital entangled commensurate ground ( Y-y ) state subject to strong quantum fluctuations at $T=0$. We evaluate the quantum fluctuations by the spin wave expansion up to order $ 1/S^2 $. In some SOC parameter regime, the Y-y state supports a massive relativistic in-commensurate magnon ( C-IC ) with its two gap minima positions continuously tuned by the SOC parameters. The C-IC magnons dominate all the low temperature thermodynamic quantities and also lead to the separation of the peak positions between the longitudinal and the transverse spin structure factors. In the weak coupling limit, any weak repulsive interaction also leads to a weak Y-y state. There is only a crossover from the weak to the strong coupling. High temperature expansions of the specific heats in both weak and strong coupling are presented. The dramatic roles to be played by these C-IC magnons at generic SOC parameters or under various external probes are hinted. Experimental applications to both layered noncentrosymmetric materials and cold atom are discussed.
description: 14 pages, 8 colour figures, Revtex4
Collaborative Print Serial Retention: A Multiple Case Study of Academic Library Projects in the United States
Creators: name: Farinella, Lindsay
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Serial publications
Library cooperation
Academic libraries

description: The University of California Shared Print program, the Committee on Institutional Cooperation Shared Print Repository, and the Triangle Research Libraries Network Collaborative Print Retention Program are studied in order to ascertain current print serial retention practices among academic libraries in the United States. Using a comparative case study design, document analysis and descriptive statistics are examined to reveal the processes of different programs, as well as their local contexts. Cross-case analysis revealed several trends: retention of print journals often builds upon existing consortial mechanisms to gather, describe, preserve, and provide access services, subsequently relieving library budgets as well as space. In the emerging electronic world, these programs are seeking a solution to the problem of print serials by collaborating to retain limited copies-always ensuring some form of basic access, and never closing the door to them completely.
Characterizing Weak Chaos using Time Series of Lyapunov Exponents
Creators: name: da Silva, R. M.
name: Manchein, C.
name: Beims, M. W.
name: Altmann, E. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate chaos in mixed-phase-space Hamiltonian systems using time series of the finite- time Lyapunov exponents. The methodology we propose uses the number of Lyapunov exponents close to zero to define regimes of ordered (stickiness), semi-ordered (or semi-chaotic), and strongly chaotic motion. The dynamics is then investigated looking at the consecutive time spent in each regime, the transition between different regimes, and the regions in the phase-space associated to them. Applying our methodology to a chain of coupled standard maps we obtain: (i) that it allows for an improved numerical characterization of stickiness in high-dimensional Hamiltonian systems, when compared to the previous analyses based on the distribution of recurrence times; (ii) that the transition probabilities between different regimes are determined by the phase-space volume associated to the corresponding regions; (iii) the dependence of the Lyapunov exponents with the coupling strength.
description: 8 pages, 6 figures
Canonical quantization of electromagnetic field in the presence of nonlinear anisotropic magnetodielectric medium with spatial-temporal dispersion
Creators: name: Amooshahi, Majid
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Modeling a nonlinear anisotropic magnetodielectric medium with spatial-temporal dispersion by two continuum collections of three dimensional harmonic oscillators, a fully canonical quantization of the electromagnetic field is demonstrated in the presence of such a medium. Some coupling tensors of various ranks are introduced that couple the magnetodielectric medium with the electromagnetic field. The polarization and magnetization fields of the medium are defined in terms of the coupling tensors and the oscillators modeling the medium. The electric and magnetic susceptibility tensors of the medium are obtained in terms of the coupling tensors. It is shown that the electric field satisfy an integral equation in frequency domain. The integral equation is solved by an iteration method and the electric field is found up to an arbitrary accuracy.
description: 19 pages
Reasoning about Relevance
Creators: name: Zelko, Hilary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Content analysis
Information retrieval
Relevance assessment

description: This study focuses on how non-expert assessors judge relevance guided by mental models of relevance developed and applied during the assessment process. Components of relevance models are identified as well as challenges and changes associated with their construction and use. Study participants evaluated the relevance of news articles with respect to an assigned search topic. They commented on their reasoning in assessing each article, challenges they experienced in determining relevance and changes in their ability to assess relevance over the course of the evaluation session. Content analysis of these comments revealed that relevance models are derived from participants' understandings of the search topic, the documents they viewed and the relationships between them. Relevance manifestations (topical, situational, cognitive) and criteria (information scope, specificity and detail) guide the development and application of the relevance models, which may also be influenced by situational, cognitive and motivational factors.
Psittacanthus scheryi Woodson
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Santalales
Loranthaceae
Psittacanthus
Psittacanthus scheryi

description: Psittacanthus scheryi Woodson
 Epiphytic shrubs. Distribution in PILA 1400–2500 m, mixed forest in transition to cloud forest, cloud forest, low elevation oak forest. Global distribution: Costa Rica, Panama. Records: A.K. Monro 4483 (BM, INB), A.K. Monro 4936 (BM, INB, MO), M. Chinchilla 192 (CR, INB).
 Psittacanthus schiedeanus (Schltdl. & Cham.) G.Don Matapalo (CR).
 Epiphytic shrubs. Distribution in PILA 1200–3400 m, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest, cloud forest, low elevation oak forest, páramo. Global distribution: Mexico to Panama. Records: A.K. Monro 4496 (BM, INB), D. Santamaría 5899 (BM, INB, MO, PMA), G. Herrera 6039 (CR, INB, MO), R. J. Schmalzel 1348 (MO).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
"That's a Good Question...": Asking Information Professionals About Digital Preservation at a University's Digital Institutional Repository
Creators: name: Tuomala, Margaret L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: College and university libraries
Electronic archive
Institutional repositories
Digital preservation
Interprofessional--cooperation

description: This study addresses some of the issues surrounding the preservation of digital objects within a digital repository.  The issues of how to determine the significant properties of digital objects and how digital repository infrastructures are developed to foster preservation are specifically addressed.  Semi-structured interviews with information professionals and researchers working with a university's digital institutional repository were conducted to gather professional opinions on these issues.  Results show the need for a clearly defined goal, concrete policies, and a sustainable repository model as some of the most important factors when creating a trustworthy digital repository.
Feedback control for damping a system of linear oscillators
Creators: name: Ovseevich, Alexander
name: Fedorov, Aleksey
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 93B03, 93B07, 93B52

description: The paper is devoted to a design of a common bounded feedback control steering a system of an arbitrary number of linear oscillators to the equilibrium. At high energies, the control is based on the asymptotic theory of reachable sets of linear systems. With decreasing of the energy, a similar control with a reduced upper bound is used. On the final stage, the control is constructed by using the method of common Lyapunov functions. Special attention is paid to the cases of one and two oscillators.
description: 12 pages, 4 figures; presented at the 37th Conference and School on Information Technologies and Systems (Kaliningrad, September 1-6, 2013); the subject of the present paper has grown out of study arXiv:1308.6090 (see Appendix III); published version
Supplementary Materials; A High Quality Asian Genome Assembly identifies the Features of Common Missing Regions
Creators: name: Jina Kim
Publisher: name: Zenodo
Year: 2020

description: Supplementary Materials(Supplementay Figures, Supplementary Tables); A High Quality Asian Genome Assembly identifies the Features of Common Missing Regions
description: 1. The Ministry of Trade, Industry and Energy (MOTIE, Korea) : 10050164 2. Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning : NRF-2017R1A2B2002136 3. The Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education : NO. 2019R1A6A3A13093761
The Use of Cyrillic Metadata for Enhancing Discovery of Russian Digital Collection Items: A Case Study of the Bowman Gray World War I Postcards Digital Collection
Creators: name: Mellon, Mary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Digital libraries
Transliteration

description: This paper examines the online discoverability of multilingual digital collections, focusing on the effectiveness of romanized and original script metadata for providing access to materials in non-roman script languages. Using the World War I Postcards from the Bowman Gray Collection digital collection at the University of North Carolina at Chapel Hill as a case study, the dynamics of Russian-language user access to postcards with and without Cyrillic description were compared with those of other major language user groups accessing the collection.
While limited on a dependence on Google's system of determining user language, the results suggest that the nature of the Cyrillic metadata included in postcard records, limited to title, publisher, and other information transcribed from the resource in a bibliographic cataloging context, did not enhance the discoverability of the postcards. Moreover, every language group was at a distinct disadvantage compared to English-language users in terms of numbers of items discovered. In conclusion, I discuss various factors that may have affected these results, as well as implications for cultural heritage institutions with multilingual and multi-script collections.
A Visual Analysis to Help College Freshmen’s Career Choosing – via Aspects of Education Level and Salary
Creators: name: Liu, Chuting
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018
Subjects: Web development
Data visualization
Visual Analysis

description: This study is mainly about constructing a visualization project to help college students have a clear and intuitive view of general circumstance of occupations, so that to help them with future career choosing hopefully. Firstly, the users’ potential information needs are discussed and different kinds of personas are built, then comes the visualization. The visualization interface mainly contains three graphs showing information of general occupation types, education level and salary of different positions, followed by some brief verbal analysis of the data and then the evaluation part, which is in the form of online survey. Data used in this project is mainly second-hand data accessed via official websites of government.
Low Background Signal Readout Electronics for the MAJORANA DEMONSTRATOR
Creators: name: Guinn, I.
name: Abgrall, N.
name: Arnquist, I. J.
name: Avignone, F. T.
name: Baldenegro-Barrera, C. X.
name: Barabash, A. S.
name: Bertrand, F. E.
name: Bradley, A. W.
name: Brudanin, V.
name: Busch, M.
name: Buuck, M.
name: Byram, D.
name: Caldwell, A. S.
name: Chan, Y-D.
name: Christofferson, C. D.
name: Cuesta, C.
name: Detwiler, J. A.
name: Efremenko, Yu.
name: Ejiri, H.
name: Elliott, S. R.
name: Galindo-Uribarri, A.
name: Gilliss, T.
name: Giovanetti, G. K.
name: Goett, J.
name: Green, M. P.
name: Gruszko, J.
name: Guiseppe, V. E.
name: Henning, R.
name: Hoppe, E. W.
name: Howard, S.
name: Howe, M. A.
name: Jasinski, B. R.
name: Keeter, K. J.
name: Kidd, M. F.
name: Konovalov, S. I.
name: Kouzes, R. T.
name: LaFerriere, B. D.
name: Leon, J.
name: MacMullin, J.
name: Martin, R. D.
name: Meijer, S. J.
name: Mertens, S.
name: Orrell, J. L.
name: O'Shaughnessy, C.
name: Poon, A. W. P.
name: Radford, D. C.
name: Rager, J.
name: Rielage, K.
name: Robertson, R. G. H.
name: Romero-Romero, E.
name: Shanks, B.
name: Shirchenko, M.
name: Snyder, N.
name: Suriano, A. M.
name: Tedeschi, D.
name: Trimble, J. E.
name: Varner, R. L.
name: Vasilyev, S.
name: Vetter, K.
name: Vorren, K.
name: White, B. R.
name: Wilkerson, J. F.
name: Wiseman, C.
name: Xu, W.
name: Yakushev, E.
name: Yu, C. -H.
name: Yumatov, V.
name: Zhitnikov, I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The MAJORANA Collaboration will seek neutrinoless double beta decay (0nbb) in 76Ge using isotopically enriched p-type point contact (PPC) high purity Germanium (HPGe) detectors. A tonne-scale array of HPGe detectors would require background levels below 1 count/ROI-tonne-year in the 4 keV region of interest (ROI) around the 2039 keV Q-value of the decay. In order to demonstrate the feasibility of such an experiment, the MAJORANA DEMONSTRATOR, a 40 kg HPGe detector array, is being constructed with a background goal of <3 counts/ROI-tonne-year, which is expected to scale down to <1 count/ROI-tonne-year for a tonne-scale experiment. The signal readout electronics, which must be placed in close proximity to the detectors, present a challenge toward reaching this background goal. This talk will discuss the materials and design used to construct signal readout electronics with low enough backgrounds for the MAJORANA DEMONSTRATOR.
description: 6 pages, 7 figures, 2 tables. LRT 2015 Proceedings
Zaggl_JAIS_2022.pdf
Creators: name: Zaggl, Michael
name: Park, Hyunwoo
name: Lee, Jeongsik
Publisher: name: figshare
Year: 2022
Subjects: subject: 150302 Business Information Systems
subject: FOS: Economics and business
subject: Information Systems
subject: FOS: Computer and information sciences
subject: 80609 Information Systems Management
subject: 80611 Information Systems Theory
subject: 150310 Organisation and Management Theory

description: Online collaboration communities increasingly take new roles besides knowledge creation and exchange, especially the role as a skill-signaling channel for career-motivated community members. This paper examines the contingency effects of job-market conditions for career-motivated knowledge contributions in online collaboration communities. From the data of individual-level activities in a computer programming-related online Q&A community (Stack Overflow), merged with job-market data for software developers, we find robust evidence of a positive ssociation between community members’ career motivation and their knowledge contributions. More importantly, we find that this positive relationship is strengthened by job-market conditions: the number of vacancies in the job market, the expected salaries from these jobs, and the transparency in the flow of career-related information between the community and external recruiters. We contribute to the motivation literature in online collaboration communities by identifying and substantiating the role of contextual factors in mobilizing members’ career motivation. Our study thus offers novel insight into how career motivation can be effectively utilized to motivate contributors in these communities. Our findings also point to a possible paradigm change by characterizing online collaboration communities as emerging institutions for career motivation and skill signaling.
Instanton induced Yukawa couplings from distant E3 and E(-1) instantons
Creators: name: Goodsell, Mark D.
name: Witkowski, Lukas T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate non-perturbative contributions to Yukawa couplings on D3-branes at orbifold singularities due to E3 and fractional E(-1) instantons which do not intersect the visible sector branes. While distant E3 instantons on bulk cycles typically contribute to Yukawa couplings, we find that distant fractional E(-1) can also give rise to new Yukawa couplings. However, fractional E(-1) instantons only induce Yukawa couplings if they are located at a singularity which shares a collapsed homologous two-cycle with the singularity supporting the visible sector. The non-perturbative contributions to Yukawa couplings exhibit a different flavour structure than the tree-level Yukawa couplings and, as a result, they can be sources of flavour violation. This is particularly relevant for schemes of moduli stabilisation which rely on superpotential contributions from E3 instantons, such as KKLT or the Large Volume Scenario. As a byproduct of our analysis, we shed some new light on the properties of annulus diagrams with matter field insertions in stringy instanton calculus.
description: 41 pages, 2 figures; v2: references added
Data Quality in Organizational Context - A Case Study
Creators: name: Lee, Shuang-lin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003
Subjects: Data Processing
Data Quality
Library Acquisitions
Database management systems
Innovative Interfaces, Inc.

description: This study examines how contextual factors affect data quality by investigating the acquisition operation of a graduate library in a large public university in the southeast. An area-study unit in the library was chosen as the site for this case study. Interviews were conducted with staff and students involved in the acquisition process, including the unit head, the acquisition manager, the acquisition database system administrator and two students responsible for data entry and pre-order search. Except for the system administrator, four of the participants also filled out a brief questionnaire concerning their views to the database system. The results of the study revealed factors both in the system and process that influence data quality in the database. Based on study findings, recommendations were provided to improve the quality of data and to reduce future errors.
Canonical quantization of electromagnetic field in the presence of absorbing bi-anisotropic multilayer magnetodielectric media
Creators: name: Amooshahi, Majid
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A bi-anisotropic magnetodielectric medium is modeled by two independent set of three dimensional harmonic oscillators .A fully canonical quantization of electromagnetic field is demonstrated in the presence of a bi-anisotropic magnetodielectric medium. The electric and magnetic polarization fields of the medium are obtained in terms of the dynamical variable modeling the medium. The Heisenberg equations of the system are solved for a multilayer bi-anisotropic magnetodielectric medium.
description: 22 Pages
MPEC 2023-Q85 : 2023 QN2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QN2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Single-Superfield Helical-Phase Inflation
Creators: name: Ketov, Sergei V.
name: Terada, Takahiro
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Large-field inflation in supergravity requires the approximate global symmetry needed to protect flatness of the scalar potential. In helical-phase inflation, the U(1) symmetry of the Kahler potential is assumed, the phase part of the complex scalar of a chiral superfield plays the role of inflaton, and the radial part is strongly stabilized. The original model of helical phase inflation, proposed by Li, Li and Nanopoulos (LLN), employs an extra (stabilizer) superfield. We propose a more economical new class of the helical phase inflationary models without a stabilizer superfield. As the specific examples, the quadratic, the natural, and the Starobinsky-type inflationary models are studied in our approach.
description: 11 pages, 3 figures (published version); more explanations and references added, typos corrected, and figures improved
Multifractal Flexibly Detrended Fluctuation Analysis
Creators: name: Rak, Rafal
name: Zięba, Pawel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Multifractal time series analysis is a approach that shows the possible complexity of the system. Nowadays, one of the most popular and the best methods for determining multifractal characteristics is Multifractal Detrended Fluctuation Analysis (MFDFA). However, it has some drawback. One of its core elements is detrending of the series. In the classical MFDFA a trend is estimated by fitting a polynomial of degree $m$ where $m=const$. We propose that the degree $m$ of a polynomial was not constant ($m\neq const$) and its selection was ruled by an established criterion. Taking into account the above amendment, we examine the multifractal spectra both for artificial and real-world mono- and the multifractal time series. Unlike classical MFDFA method, obtained singularity spectra almost perfectly reflects the theoretical results and for real time series we observe a significant right side shift of the spectrum.
description: 15 pages, 9 figures. arXiv admin note: text overlap with arXiv:1212.0354 by other authors
Hacking Curriculum: Leveraging Web 2.0, Socio-Cultural Literacy, and Community to Articulate Information Literacy
Creators: name: Taylor, Luther H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Hacker Theory
New London Group
Curriculum Theory
Information literacy

description: Curriculum in post-secondary education remains grounded in practices and assumptions about learning that is more representative of a 19th model of education than a 21st century model of education. Compounding this paradox is that fact that because of technological advance the entire world is experiencing a paradigmatic shift in the way knowledge is produced, disseminated, and learned. This essay suggests a curriculum theory of information literacy that is informed by socio-cultural literacy principles and a DIY hacker ethos, with the assumption that such a curricular epistemology could prove revolutionary across disciplines. The essay concludes with observations about the radical changes in knowledge production and human information interaction.