cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The HI Kinematics of NGC 4013: a Steep and Radially Shallowing Extra-planar Rotational Lag
Creators: name: Zschaechner, Laura K.
name: Rand, Richard J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: NGC 4013 is a distinctly warped galaxy with evidence of disk-halo activity. Through deep HI observations and modeling we confirm that the HI disk is thin (central exponential scale height of with an upper limit of 4" or 280 pc), but flaring. We detect a vertical gradient in rotation velocity (lag), which shallows radially from a value of -35 +7/-28 km/s/kpc at 1.4' (5.8 kpc), to a value of zero near R_25 (11.2 kpc). Over much of this radial range, the lag is relatively steep. Both the steepness and the radial shallowing are consistent with recent determinations for a number of edge-ons, which have been difficult to explain. We briefly consider the lag measured in NGC 4013 in the context of this larger sample and theoretical models, further illuminating disk-halo flows.
description: Accepted to ApJ on 16 June 2015, 11 pages, 15 figures
Extending cosmological tests of General Relativity with the Square Kilometre Array
Creators: name: Bull, Philip
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Tests of general relativity (GR) are still in their infancy on cosmological scales, but forthcoming experiments promise to greatly improve their precision over a wide range of distance scales and redshifts. One such experiment, the Square Kilometre Array (SKA), will carry out several wide and deep surveys of resolved and unresolved neutral hydrogen (HI) 21cm line-emitting galaxies, mapping a significant fraction of the sky from $0 \le z \lesssim 6$. I present forecasts for the ability of a suite of possible SKA HI surveys to detect deviations from GR by reconstructing the cosmic expansion and growth history. SKA Phase 1 intensity mapping surveys can achieve sub-1\% measurements of $fσ_8$ out to $z\approx 1$, with an SKA1-MID Band 2 survey out to $z \lesssim 0.6$ able to surpass contemporary spectroscopic galaxy surveys such as DESI and Euclid in terms of constraints on modified gravity parameters if challenges such as foreground contamination can be tackled effectively. A more futuristic Phase 2 HI survey of $\sim10^9$ spectroscopic galaxy redshifts would be capable of detecting a $\sim 2\%$ modification of the Poisson equation out to $z\approx 2$.
description: Updated to match published version - minor additions only
Additional file 3 of Training Intensity Distribution of a 7-Day HIIT Shock Microcycle: Is Time in the “Red Zone” Crucial for Maximizing Endurance Performance? A Randomized Controlled Trial
Creators: name: Strepp, Tilmann
name: Blumkaitis, Julia C.
name: Sareban, Mahdi
name: Stöggl, Thomas Leonhard
name: Haller, Nils
Publisher: name: figshare
Year: 2024
Subjects: Biological Sciences not elsewhere classified

description: Additional file 3
Geometric invariant theory for graded unipotent groups and applications
Creators: name: Bérczi, Gergely
name: Doran, Brent
name: Hawes, Thomas
name: Kirwan, Frances
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 13A50, 14L24

description: Let $U$ be a graded unipotent group over the complex numbers, in the sense that it has an extension $\hat{U}$ by the multiplicative group such that the action of the multiplicative group by conjugation on the Lie algebra of $U$ has all its weights strictly positive. Given any action of $U$ on a projective variety $X$ extending to an action of $\hat{U}$ which is linear with respect to an ample line bundle on $X$, then provided that one is willing to replace the line bundle with a tensor power and to twist the linearisation of the action of $\hat{U}$ by a suitable (rational) character, and provided an additional condition is satisfied which is the analogue of the condition in classical GIT that there should be no strictly semistable points for the action, we show that the $\hat{U}$-invariants form a finitely generated graded algebra; moreover the natural morphism from the semistable subset of $X$ to the enveloping quotient is surjective and expresses the enveloping quotient as a geometric quotient of the semistable subset. Applying this result with $X$ replaced by its product with the projective line gives us a projective variety which is a geometric quotient by $\hat{U}$ of an invariant open subset of the product of $X$ with the affine line and contains as an open subset a geometric quotient of a U-invariant open subset of $X$ by the action of $U$. Furthermore these open subsets of $X$ and its product with the affine line can be described using criteria similar to the Hilbert-Mumford criteria in classical GIT.
description: Revised version, 30 pages. arXiv admin note: text overlap with arXiv:1607.04181
Diverse Internet Experience as a Predictor For Online Privacy Concern
Creators: name: Green, David A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008
Subjects: Information retrieval--Social aspects
Internet--Security measures
Use studies--Internet
Right of privacy

description: This study describes results of an online survey of students enrolled in the Graduate School at the University of North Carolina at Chapel Hill. The survey was conducted to assess the diversity of the students' Internet experience and how concerned they are with their online privacy.  People have different levels of concern about online privacy, and concern for privacy reflects in part the social, political, and cultural climate of a society at a point in time. It has been suggested that the extent and variety of online activities in which a user engages can be a good predictor of some kinds of Internet attitudes, including attitudes about information privacy. This study tests the hypothesis that users' concern with online privacy is related to users' diversity of experience on the Internet. The results showed no significant relationship between diverse Internet experience and overall online privacy concern. However, significant correlations were found for specific variables, such as the relationship between using the Internet for making calls and concern for government or service provider monitoring activity.
title: Sollen wir Bibliothekare jetzt alle Informatiker werden?
title: Forschungsdatenmanagement, Datenerhaltung und -pflege als neue Aufgabenfelder
titleType: Subtitle
Creators: name: Becker, Pascal-Nicolas
name: Fürste, Fabian
Publisher: name: Technische Universität Berlin
Year: 2013
Subjects: subject: 020 Bibliotheks- und Informationswissenschaften
subject: Forschungsdatenmanagement
subject: Forschungsdaten
subject: Berufsbild
subject: Ausbildung
subject: Paradigmenwechsel
subject: Bibliothek
subject: research data management
subject: research data
subject: job profile
subject: training
subject: paradigm shift
subject: library

description: Immer mehr Bibliotheken übernehmen Aufgaben im Bereich der Datenerhaltung und -pflege. Informatiker/innen tragen im Öffentlichen Dienst oft die Bezeichnung »Angestellte/r in der Datenverwaltung«, obwohl die Verwaltung gespeicherter Daten schon lange keine Aufgabe mehr nur für Informatiker/innen darstellt. Gleichzeitig geht die bibliothekarische Arbeit über die klassische Literaturversorgung hinaus und umfasst zunehmend mehr und mehr technische Bereiche. Ein hochaktuelles Tätigkeitsfeld für wissenschaftliche Bibliotheken stellt das Forschungsdatenmanagement dar. Was verbirgt sich dahinter und welche Anforderungen ergeben sich daraus für das bibliothekarische Berufsbild? Sollen wir jetzt alle Informatiker/ innen werden?
Current Status of PREMIS  (PREservation metadata: implementation strategies) Implementation in American Archives and Historical Societies and the Factors Affecting This Adoption Rate
Creators: name: Brake, Alston M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012
Subjects: PREMIS
Archives
preservation metadata
Primary sources
Special collections
Digital libraries

description: This paper presents the findings of fifty interviews seeking to discover the current status of PREMIS (PREservation metadata: implementation strategies) implementation in American archives and historical societies and the factors influencing these implementation decisions.  The survey was designed to address two research questions: are American archives and historical societies implementing the PREMIS standard for preservation metadata and what barriers are being discussed by staff at these repositories prior to implementation decisions.  Additionally, for those repositories THAT had not implemented PREMIS, the interviews sought to discover how else, if at all, staff was addressing the preservation metadata needs of the digital objects.  Findings indicate that AMERICAN ARCHIVES HAVE OVERWHELMINGLY CHOSEN NOT TO IMPLEMENT PREMIS IN ANY WAY. STUDY participants identified many barriers to implementing PREMIS for the description of digital objects.  They also suggested support that would help them become better able to implement PREMIS.  The interviews shed light on the barriers causing the staff at American archives the most difficulty in their efforts to create any kind of metadata for their digital objects, using any schema or standard.
Stellar Orbital Studies in Normal Spiral Galaxies II: Restrictions to Structural and Dynamical parameters on Spiral Arms
Creators: name: Pérez-Villegas, Angeles
name: Pichardo, Bárbara
name: Moreno, Edmundo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Making use of a set of detailed potential models for normal spiral galaxies, we analyze the disk stellar orbital dynamics as the structural and dynamical parameters of the spiral arms (mass, pattern speed and pitch angle) are gradually modified. With this comprehensive study of ordered and chaotic behavior, we constructed an assemblage of orbitally supported galactic models and plausible parameters for orbitally self-consistent spiral arms models. We find that, to maintain orbital support for the spiral arms, the spiral arm mass, M$_{sp}$, must decrease with the increase of the pitch angle, $i$; if $i$ is smaller than $\sim10°$, M$_{sp}$ can be as large as $\sim7\%$, $\sim6\%$, $\sim5\%$ of the disk mass, for Sa, Sb, and Sc galaxies, respectively. If $i$ increases up to $\sim25°$, the maximum M$_{sp}$ is $\sim1\%$ of the disk mass independently in this case of morphological type. For values larger than these limits, spiral arms would likely act as transient features. Regarding the limits posed by extreme chaotic behavior, we find a strong restriction on the maximum plausible values of spiral arms parameters on disk galaxies beyond which, chaotic behavior becomes pervasive. We find that for $i$ smaller than $\sim20°$, $\sim25°$, $\sim30°$, for Sa, Sb, and Sc galaxies, respectively, M$_{sp}$ can go up to $\sim10\%$, of the mass of the disk. If the corresponding $i$ is around $\sim40°$, $\sim45°$, $\sim50°$, M$_{sp}$ is $\sim1\%$, $\sim2\%$, $\sim3\%$ of the mass of the disk. Beyond these values, chaos dominates phase space, destroying the main periodic and the neighboring quasi-periodic orbits.
description: 51 pages in preprint format, 30 figures, Accepted for publication in ApJ
Ashurbanipal's Legacy: Rediscovering the Greatest Library the World had Ever Known
Creators: name: Boisvert, Cheri L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012
Subjects: Museums
Libraries--History

description: In this time of seemingly endless war, it is more important than ever to preserve and study the artifacts left behind by the early inhabitants of the Middle East. In absence of physical artifacts, the only records of history are the mutable oral traditions passed from person to person through the centuries. Like in the children's game of telephone, these stories change with each iteration. Despots can take advantage of this by reshaping the narrative to fit their rhetoric; conceivably changing the perception of the past irreparably within a generation. Without immutable proof, the truth can be lost in the propaganda. The Middle East has undergone this process of benign misinterpretation and malevolent revising for thousands of years; Ashurbanipal's Library represents one of the rare caches of unadulterated truth. It is vital from both a regional identity and a world history standpoint that this truth is preserved for future generations.
MS Gr. class. c. 4 734
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1021 col. 5. Philodemus, Index Academicorum
Drawing by Gennaro Casanova
Nonlinear internal waves and induced currents in a two-layer fluid
Creators: name: Baddeley, Liam
Publisher: name: Loughborough University
Year: 2023
Subjects: classificationCode: 499999
subject: Other mathematical sciences not elsewhere classified

description: Across the world’s oceans, variations in sea water temperature and salinity stratify the water column. In many locations an interfacial layer, known as the pycnocline, forms where temperature and density vary strongly with depth. The pycnocline supports internal waves which propagate horizontally and play a deciding role in processes such as climate change and nutrient cycles. Internal solitary waves are a particular form of internal waves that are localised and can travel large distances without significant change of form or magnitude. While continuously stratified flows have infinitely many modes, most observations are of the first baroclinic mode, which displace isopycnals in one direction only and can either be waves of elevation, or depression. In this work, we study the simplest physical system supporting these waves: a two-layer fluid confined between two solid walls. Various mathematical models, ranging from the weakly nonlinear to the strongly nonlinear regime, are examined in detail. A comparative study of their solitary-wave solutions and main characteristics is performed. We then explore ways weakly nonlinear models can be improved to better approximate the solutions within the strongly nonlinear regime, well described by the socalled Miyata-Choi-Camassa (MCC) model. Large amplitude internal waves are known to exert substantial loads on deep-water structures. We use the different models to predict the wave-induced currents in water column. Once the velocity field in the water column is known, the Morison’s formula is then applied to find the horizontal force exerted on thin cylinder piles. We have identified a spurious flow reversal predicted by some weakly nonlinear models, when relatively large amplitude waves are considered. In addition, our numerical results show that the internal wave force is considerably underestimated if the traditional KdV theory is used. Therefore, a better understanding of the effects caused by large amplitude internal solitary waves is needed for the design of future deepwater offshore production facilities.
Library Use and Source Selection of Undergraduate Students at the University of North Carolina at Chapel Hill
Creators: name: Wolf, Robert D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: Source selection--Statistics
Surveys--Undergraduate students
Undergraduate students--University of North Carolina
College and university libraries--Undergraduate usage

description: This study describes a survey of undergraduate students at the University of North Carolina Chapel Hill. The survey was conducted to determine the frequency of library use and source selection of undergraduate students. Demographics had little effect on library use and source selection. Two variables explain a student's library use, the student's parents' education and the level of promotion the library receives from the faculty. A student's choice of sources was independent of any variable in the study.
Detection of RO2 radicals and other products from cyclohexene ozonolysis with NH4+ and acetate chemical ionization mass spectrometry
Creators: name: Hansel, Armin
name: Scholz, Wiebke
name: Mentler, Bernhard
name: Fischer, Lukas
name: Berndt, Torsten
Publisher: name: Oxford [u.a.] : Elsevier
Year: 2018
Subjects: subject: Carbon closure
subject: CIMS
subject: Cyclohexene
subject: HOMs
subject: Ozonolysis
subject: RO2 radicals
subject: 550
subject: 690

description: The performance of the novel ammonium chemical ionization time of flight mass spectrometer (NH4+-CI3–TOF) utilizing NH4+ adduct ion chemistry to measure first generation oxidized product molecules (OMs) as well as highly oxidized organic molecules (HOMs) was investigated for the first time. The gas-phase ozonolysis of cyclohexene served as a first test system. Experiments have been carried out in the TROPOS free-jet flow system at close to atmospheric conditions. Product ion signals were simultaneously observed by the NH4+-CI3-TOF and the acetate chemical ionization atmospheric pressure interface time of flight mass spectrometer (acetate-CI-API-TOF). Both instruments are in remarkable good agreement within a factor of two for HOMs. For OMs not containing an OOH group the acetate technique can considerably underestimate OM concentrations by 2–3 orders of magnitude. First steps of cyclohexene ozonolysis generate ten different main products, detected with the ammonium-CI3-TOF, comprising 93% of observed OMs. The remaining 7% are distributed over several minor products that can be attributed to HOMs, predominately to highly oxidized RO2 radicals. Summing up, observed ammonium-CI3-TOF products yield 5.6 × 109 molecules cm−³ in excellent agreement with the amount of reacted cyclohexene of 4.5 × 109 molecules cm−³ for reactant concentrations of [O3] = 2.25 × 1012 molecules cm−³ and [cyclohexene] = 2.0 × 1012 molecules cm−³ and a reaction time of 7.9 s. NH4+ adduct ion chemistry is a promising CIMS technology for achieving carbon-closure due to the unique opportunity for complete detection of the whole product distribution including also peroxy radicals, and consequently, for a much better understanding of oxidation processes.
Towards Understanding the Nature of Young Detached Binary System HD 350731
Creators: name: Soydugan, F.
name: Alicavus, F.
name: Bilir, S.
name: Soydugan, E.
name: Puskullu, C.
name: Senyuz, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The young binary system HD 350731 is a noteworthy laboratory for studying early-type binaries with similar components. We present here the analysis of differential multi-color photometric and spectroscopic observations for the double-lined detached system. Accurate absolute parameters were determined from the simultaneous solution of light and radial velocity curves for the first time. HD 350731 consists of two B8V-type components having masses and radii respectively of $M_{1}=2.91\pm0.13$ M$_{\odot}$, $M_{2}=2.80\pm0.14$ M$_{\odot}$, $R_{1}= 2.11 \pm0.05$ R$_{\odot}$ and $R_{2}=2.07\pm0.05$ R$_{\odot}$. The effective temperatures were determined based on analysis of disentangled spectra of the components and derived to be $12000\pm250$ K and $11830\pm300$ K for the primary and secondary components, respectively. The measured projected rotational velocities, 69.2$\pm$1.5 km s$^{-1}$ for primary and 70.1$\pm$1.7 km s$^{-1}$ for secondary, were found closer to the pseudo-synchronous velocities of the components. Comparison with evolutionary models suggests an age of 120$\pm$35 Myr. Kinematic analysis of the unevolved binary system HD 350731 revealed that it belongs to the young thin-disc population of the Galaxy.
description: 36 pages, including 8 figures and 8 tables, accepted for publication in Astronomical Journal
Neurodynamic evaluation of hearing aid features using EEG correlates of listening effort
Creators: name: Bernarding, Corinna
name: Strauss, Daniel J.
name: Hannemann, Ronny
name: Seidler, Harald
name: Corona-Strauss, Farah I.
Publisher: name: Dordrecht : Springer
Year: 2017
Subjects: subject: EEG
subject: Hearing aids
subject: Hearing loss
subject: Listening effort
subject: 610
subject: 540

description: In this study, we propose a novel estimate of listening effort using electroencephalographic data. This method is a translation of our past findings, gained from the evoked electroencephalographic activity, to the oscillatory EEG activity. To test this technique, electroencephalographic data from experienced hearing aid users with moderate hearing loss were recorded, wearing hearing aids. The investigated hearing aid settings were: a directional microphone combined with a noise reduction algorithm in a medium and a strong setting, the noise reduction setting turned off, and a setting using omnidirectional microphones without any noise reduction. The results suggest that the electroencephalographic estimate of listening effort seems to be a useful tool to map the exerted effort of the participants. In addition, the results indicate that a directional processing mode can reduce the listening effort in multitalker listening situations.
MS Gr. class. c. 4 735
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1021 col. 6. Philodemus, Index Academicorum
Drawing by Gennaro Casanova
The Origins of Library Services for Blind Adults in the United States
Creators: name: Reynolds, Elizabeth
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Libraries & people with disabilities--History
Libraries & the blind
Blind--Books & reading

description: This paper examines early public library services to blind adults in the United States. While blind adults had access to library services beginning in the late nineteenth century, these services were limited, especially outside of urban areas in the northeast and California. The establishment of a uniform raised type and advances in printing technology made it possible for libraries for the blind to fill their shelves. However, patrons' dependence on receiving books through the mail resulted in the creation of a national library service with regional distribution centers. Studying how public libraries adapted to meet the needs of a new user group in the early twentieth century may help librarians think about how to meet the needs of today's underserved populations.
Multi-particle bound state formation following a quantum quench to the one-dimensional Bose gas with attractive interactions
Creators: name: Piroli, Lorenzo
name: Calabrese, Pasquale
name: Essler, Fabian H. L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider quantum quenches from an ideal Bose condensate to the Lieb-Liniger model with arbitrary attractive interaction strength. We focus on the properties of the non-equilibrium steady state reached at late times after the quench. Using recently developed methods based on integrability, we obtain an exact description of the stationary state for a large number of bosons. A distinctive feature of this state is the presence of a hierarchy of multi-particle bound states. We determine the dependence of their densities on interaction strength and obtain an exact expression for the stationary value of the local pair correlation $g_2$. We discuss ramifications of our results for cold atom experiments.
description: 6 pages, 3 figures; v2: minor revision and references added
Toward a taxonomic model of attention in effortful listening
Creators: name: Strauss, Daniel J.
name: Francis, Alexander L.
Publisher: name: New York, NY : Springer
Year: 2017
Subjects: subject: Attention
subject: Listening effort
subject: Modeling
subject: Speech perception
subject: 610

description: In recent years, there has been increasing interest in studying listening effort. Research on listening effort intersects with the development of active theories of speech perception and contributes to the broader endeavor of understanding speech perception within the context of neuroscientific theories of perception, attention, and effort. Due to the multidisciplinary nature of the problem, researchers vary widely in their precise conceptualization of the catch-all term listening effort. Very recent consensus work stresses the relationship between listening effort and the allocation of cognitive resources, providing a conceptual link to current cognitive neuropsychological theories associating effort with the allocation of selective attention. By linking listening effort to attentional effort, we enable the application of a taxonomy of external and internal attention to the characterization of effortful listening. More specifically, we use a vectorial model to decompose the demand causing listening effort into its mutually orthogonal external and internal components and map the relationship between demanded and exerted effort by means of a resource-limiting term that can represent the influence of motivation as well as vigilance and arousal. Due to its quantitative nature and easy graphical interpretation, this model can be applied to a broad range of problems dealing with listening effort. As such, we conclude that the model provides a good starting point for further research on effortful listening within a more differentiated neuropsychological framework.
Numerical modelling of the czochralski growth of β-Ga2O3
Creators: name: Miller, Wolfram
name: Böttcher, Klaus
name: Galazka, Zbigniew
name: Schreuer, Jürgen
Publisher: name: Basel : MDPI
Year: 2017
Subjects: subject: Ga2O3
subject: Global simulation
subject: Thermal stress
subject: 540

description: Our numerical modelling of the Czochralski growth of single crystalline β-Ga2O3 crystals (monoclinic symmetry) starts at the 2D heat transport analysis within the crystal growth furnace, proceeds with the 3D heat transport and fluid flow analysis in the crystal-melt-crucible arrangement and targets the 3D thermal stress analysis within the β-Ga2O3 crystal. In order to perform the stress analysis, we measured the thermal expansion coefficients and the elastic stiffness coefficients in two samples of a β-Ga2O3 crystal grown at IKZ. Additionally, we analyse published data of β-Ga2O3 material properties and use data from literature for comparative calculations. The computations were performed by the software packages CrysMAS, CGsim, Ansys-cfx and comsol Multiphysics. By the hand of two different thermal expansion data sets and two different crystal orientations, we analyse the elastic stresses in terms of the von-Mises stress.
Climate Feedback on Aerosol Emission and Atmospheric Concentrations
Creators: name: Tegen, Ina
name: Schepanski, Kerstin
Publisher: name: Heidelberg : Springer
Year: 2018
Subjects: subject: Atmospheric chemistry
subject: Biogeochemical cycles
subject: Climate change
subject: Climate forcing
subject: Natural aerosols
subject: 550

description: Purpose of Review: Climate factors may considerably impact on natural aerosol emissions and atmospheric distributions. The interdependencies of processes within the aerosol-climate system may thus cause climate feedbacks that need to be understood. Recent findings on various major climate impacts on aerosol distributions are summarized in this review. Recent Findings: While generally atmospheric aerosol distributions are influenced by changes in precipitation, atmospheric mixing, and ventilation due to circulation changes, emissions from natural aerosol sources strongly depend on climate factors like wind speed, temperature, and vegetation. Aerosol sources affected by climate are desert sources of mineral dust, marine aerosol sources, and vegetation sources of biomass burning aerosol and biogenic volatile organic gases that are precursors for secondary aerosol formation. Different climate impacts on aerosol distributions may offset each other. Summary: In regions where anthropogenic aerosol loads decrease, the impacts of climate on natural aerosol variabilities will increase. Detailed knowledge of processes controlling aerosol concentrations is required for credible future projections of aerosol distributions.
The Harry Potter Effect: Understanding the Crossover Appeal of Bestselling  Young Adult Literature
Creators: name: Relue, Abigail S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009
Subjects: Young adult literature
Genre fiction Studies
Reader's advisory Adult
Readers Adults

description: The books of the Harry Potter series by J.K. Rowling, the His Dark Materials series by  Philip Pullman, and the Twilight saga by Stephenie Meyer are examined in order to better  understand why these novels have been so popular among adult readers. Observed  factors contributing to the popularity of these young novels include fantastical settings  and plotlines, the familiarity of the teen protagonists' experiences, the ability to share the  reading experience with others, and the accessibility of the writing.
Undergraduate Perceptions of the UNC Libraries
Creators: name: Cline, Ellen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018
Subjects: Academic library use studies
Academic libraries

description: Following the understanding that perception affects use, this research paper contributes to library assessment literature and investigates patron perceptions of libraries. Since undergraduates make up a majority of the UNC student body, the focus of this paper is on them and their levels of library engagement. A survey of undergraduates was conducted to better understand their perceptions of the UNC libraries and how those perceptions affect library use. The survey found that many students use the library as a place for studying and view it as both a building and as a community. Implications for library practice are examined, and it was found that the libraries could work to improve study areas in the library and improve outreach.
16 Years of Ulysses Interstellar Dust Measurements in the Solar System: I. Mass Distribution and Gas-to-Dust Mass Ratio
Creators: name: Krüger, Harald
name: Strub, Peter
name: Gruen, Eberhard
name: Sterken, Veerle J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the early 1990s, contemporary interstellar dust (ISD) penetrating deep into the heliosphere was identified with the in-situ dust detector on board the Ulysses spacecraft. Between 1992 and the end of 2007 Ulysses monitored the ISD stream. The interstellar grains act as tracers of the physical conditions in the local interstellar medium surrounding our solar system. Earlier analyses of the Ulysses ISD data measured between 1992 and 1998 implied the existence of 'big' ISD grains [up to 10^-13kg]. The derived gas-to-dust-mass ratio was smaller than the one derived from astronomical observations, implying a concentration of ISD in the very local interstellar medium. We analyse the entire data set from 16 yr of Ulysses ISD measurements in interplanetary space. This paper concentrates on the overall mass distribution of ISD. An accompanying paper investigates time-variable phenomena in the Ulysses ISD data, and in a third paper we present the results from dynamical modelling of the ISD flow applied to Ulysses. We use the latest values for the interstellar hydrogen and helium densities, the interstellar helium flow speed of v_ISM,inf=23.2km/s, and the ratio of radiation pressure to gravity, beta, calculated for astronomical silicates. We find a gas-to-dust-mass ratio in the local interstellar cloud of R_g/d=193^+85_-57, and a dust density of 2.1+/-0.6x10^-24kg/m^3. For a higher inflow speed of 26km/s, the gas-to-dust-mass ratio is 20% higher, and, accordingly, the dust density is lower by the same amount. The gas-to-dust mass ratio derived from our new analysis is compatible with the value most recently determined from astronomical observations. We confirm earlier results that the very local interstellar medium contains 'big' (i.e. 1 um-sized) ISD grains. We find a dust density in the local interstellar medium that is a factor of three lower than values implied by earlier analyses.
description: 51 pages, 5 Tables, 8 Figures in Astrophysical Journal, published, 812:139 (16pp), 2015 October 20
Microenvironments designed to support growth and function of neuronal cells
Creators: name: Farrukh, Aleeza
name: Zhao, Shifang
name: Del Campo, Aránzazu
Publisher: name: Lausanne : Frontiers Media
Year: 2018
Subjects: subject: Axon growth
subject: Biomaterials
subject: Nerve repair
subject: Neurite guidance
subject: Neuroregeneration
subject: 620

description: Strategies for neural tissue repair heavily depend on our ability to temporally reconstruct the natural cellular microenvironment of neural cells. Biomaterials play a fundamental role in this context, as they provide the mechanical support for cells to attach and migrate to the injury site, as well as fundamental signals for differentiation. This review describes how different cellular processes (attachment, proliferation, and (directional) migration and differentiation) have been supported by different material parameters, in vitro and in vivo. Although incipient guidelines for biomaterial design become visible, literature in the field remains rather phenomenological. As in other fields of tissue regeneration, progress will depend on more systematic studies on cell-materials response, better understanding on how cells behave and understand signals in their natural milieu from neurobiology studies, and the translation of this knowledge into engineered microenvironments for clinical use.
Comparing molecules and solids across structural and alchemical space
Creators: name: De, Sandip
name: Bartók, Albert P.
name: Csányi, Gábor
name: Ceriotti, Michele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Evaluating the (dis)similarity of crystalline, disordered and molecular compounds is a critical step in the development of algorithms to navigate automatically the configuration space of complex materials. For instance, a structural similarity metric is crucial for classifying structures, searching chemical space for better compounds and materials, and driving the next generation of machine-learning techniques for predicting the stability and properties of molecules and materials. In the last few years several strategies have been designed to compare atomic coordination environments. In particular, the Smooth Overlap of Atomic Positions (SOAP) has emerged as an elegant framework to obtain translation, rotation and permutation-invariant descriptors of groups of atoms, driven by the design of various classes of machine-learned inter-atomic potentials. Here we discuss how one can combine such local descriptors using a Regularized Entropy Match (REMatch) approach to describe the similarity of both whole molecular and bulk periodic structures, introducing powerful metrics that enable the navigation of alchemical and structural complexity within a unified framework. Furthermore, using this kernel and a ridge regression method we can predict atomization energies for a database of small organic molecules with a mean absolute error below 1kcal/mol, reaching an important milestone in the application of machine-learning techniques to the evaluation of molecular properties.
description: 18 pages, 7 figures
MS Gr. class. c. 4 736
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1021 col. 7. Philodemus, Index Academicorum
Drawing by Gennaro Casanova
The Black Hole in the Compact, High-dispersion Galaxy NGC 1271
Creators: name: Walsh, Jonelle L.
name: Bosch, Remco C. E. van den
name: Gebhardt, Karl
name: Yıldırım, Akın
name: Gültekin, Kayhan
name: Husemann, Bernd
name: Richstone, Douglas O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Located in the Perseus cluster, NGC 1271 is an early-type galaxy with a small effective radius of 2.2 kpc and a large stellar velocity dispersion of 276 km/s for its K-band luminosity of 8.9x10^{10} L_sun. We present a mass measurement for the black hole in this compact, high-dispersion galaxy using observations from the integral field spectrograph NIFS on the Gemini North telescope assisted by laser guide star adaptive optics, large-scale integral field unit observations with PPAK at the Calar Alto Observatory, and Hubble Space Telescope WFC3 imaging observations. We are able to map out the stellar kinematics on small spatial scales, within the black hole sphere of influence, and on large scales that extend out to four times the galaxy's effective radius. We find that the galaxy is rapidly rotating and exhibits a sharp rise in the velocity dispersion. Through the use of orbit-based stellar dynamical models, we determine that the black hole has a mass of (3.0^{+1.0}_{-1.1}) x 10^9 M_sun and the H-band stellar mass-to-light ratio is 1.40^{+0.13}_{-0.11} M_sun/L_sun (1-sigma uncertainties). NGC 1271 occupies the sparsely-populated upper end of the black hole mass distribution, but is very different from the Brightest Cluster Galaxies (BCGs) and giant elliptical galaxies that are expected to host the most massive black holes. Interestingly, the black hole mass is an order of magnitude larger than expectations based on the galaxy's bulge luminosity, but is consistent with the mass predicted using the galaxy's bulge stellar velocity dispersion. More compact, high-dispersion galaxies need to be studied using high spatial resolution observations to securely determine black hole masses, as there could be systematic differences in the black hole scaling relations between these types of galaxies and the BCGs/giant ellipticals, thereby implying different pathways for black hole and galaxy growth.
description: accepted for publication in ApJ
MS Gr. class. c. 4 737
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1021 col. 8. Philodemus, Index Academicorum
Drawing by Gennaro Casanova
Accessing the Avengers: An Investigation of Graphic Novel Classification in Literature and Practice
Creators: name: Turner, Elizabeth
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Graphic novels--Cataloging
Graphic novels--Administration

description: Purpose: With the increasing popularity of graphic novels, the medium poses new problems to information professionals, particularly in how to organize this material in conjunction with more traditional literature. This study attempted to understand the classification of graphic novels in three collections in order to compare their organizational systems to current trends in the literature.
Methods: The study collected data on the type of classification system implemented (cataloging, shelving, or metadata schema), the system's effectiveness within its environment, and employee opinions on implementation. Unlike previous studies, commercial collections were also observed for comparison. Results: This study synthesized scattered information about the implementation of classification systems and revealed while authors have suggested best practices for providing access to graphic novels, these practices were not yet used in the libraries studied There was no clear universal classification system, either in the settings studied or the literature. Conclusions: Flexibility, transparency, and consistency should be the driving forces for graphic novel classification rather than a single, rigid system. Libraries should balance their methods with the needs of the patrons and utilize resources outside of the classification system to increase access to materials.
The UV and optical Fe II emission lines in type 1 AGNs
Creators: name: Kovacevic-Dojcinovic, Jelena
name: Popovic, Luka C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the spectral properties of the UV ($λλ$2650-3050 Å) and optical ($λλ$4000-5500 Å) Fe II emission features in a sample of 293 type 1 active galactic nuclei (AGNs) from Sloan Digital Sky Survey (SDSS) database. We explore different correlations between their emission line properties, as well as the correlations with the other emission lines from the spectral range. We find several interesting correlations and we can outline the most interesting results as follows. (i) There is a kinematical connection between the UV and optical Fe II lines, indicating that the UV and optical Fe II lines originate from the outer part of the broad line region, so-called intermediate line region; (ii) The unexplained anticorrelations of the optical Fe II (EW Fe II$_{opt}$) versus EW [O III] 5007 Å and EW Fe II$_{opt}$ versus FWHM Hbeta have not been detected for the UV Fe II lines; (iii) The significant averaged redshift in the UV Fe II lines, which is not present in optical Fe II, indicates an inflow in the UV Fe II emitting clouds, and probably their asymmetric distribution. (iv) Also, we confirm the anticorrelation between the intensity ratio of the optical and UV Fe II lines and FWHM of Hbeta, and we find the anticorrelations of this ratio with the widths of Mg II 2800 Å, optical Fe II and UV Fe II. This indicates a very important role for the column density and microturbulence in the emitting gas. We discuss the starburst activity in high-density regions of young AGNs as a possible explanation of the detected optical Fe II correlations and intensity line ratios of the UV and optical Fe II lines.
description: 61 pages, 19 figures, published in ApJS, English and style corrected version
Transport of mineral dust and its impact on climate
Creators: name: Schepanski, Kerstin
Publisher: name: Basel : MDPI
Year: 2018
Subjects: subject: Climate interaction
subject: Dust
subject: Dust cycle
subject: Dust feedback
subject: Mineral dust
subject: 550

description: Mineral dust plays a pivotal role in the Earth’s system. Dust modulates the global energy budget directly via its interactions with radiation and indirectly via its influence on cloud and precipitation formation processes. Dust is a micro-nutrient and fertilizer for ecosystems due to its mineralogical composition and thus impacts on the global carbon cycle. Hence, dust aerosol is an essential part of weather and climate. Dust suspended in the air is determined by the atmospheric dust cycle: Dust sources and emission processes define the amount of dust entrained into the atmosphere. Atmospheric mixing and circulation carry plumes of dust to remote places. Ultimately, dust particles are removed from the atmosphere by deposition processes such as gravitational settling and rain wash out. During its residence time, dust interacts with and thus modulates the atmosphere resulting into changes such as in surface temperature, wind, clouds, and precipitation rates. There are still uncertainties regarding individual dust interactions and their relevance. Dust modulates key processes that are inevitably influencing the Earth energy budget. Dust transport allows for these interactions and at the same time, the intermittency of dust transport introduces additional fluctuations into a complex and challenging system.
The Portrayal of Mexican American Females in Realistic Picture Books (1998-2004)
Creators: name: Sherriff, Amanda J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: Picture books--Evaluation
Children's literature--Evaluation--Sexism
Spanish American Literature--Evaluation
Children's Literature--Evaluation--Racism
Minorities in Literature--Evaluation
Content analysis

description: This study was designed to answer the question: What are the similarities and differences between the portrayal of Mexican American females in realistic picture books published between 1998 and 2004 and such books published between 1990 and 1997? A content analysis was performed on 48 picture books published between 1998 and 2004 that feature Mexican American female characters, and the results were compared to a study of similar books published between 1990 and 1997. The study found that the portrayal of Mexican American females in the more recent time period is more authentic and less stereotypical than their portrayal in the earlier time period and that fewer Mexican American females are now depicted as submitting to gender subordination. However, the results show that the portrayal of Mexican American females in picture books does not yet fully reflect the nontraditional gender roles that these females often take on in contemporary society.
Audouinella desikacharyi E. K. Ganesan
Creators: name: Ganesan, E. K.
name: West, John A.
name: Jr, Orlando Necchi
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Rhodophyta
Florideophyceae
Nemaliales
Acrochaetiaceae
Audouinella
Audouinella desikacharyi

description: Audouinella desikacharyi E. K. Ganesan & J.A.West
Ganesan & West 2013, p. 46.
 Taxonomic synonyms: Chantransia pulvinata Schmidle 1900, p. 188; Srinivasan 1965, p. 244; Balakrishnan & Chaugule, 2002, p. 12; Audouinella pulvinata (Schmidle) Desikachary et al. 1990, Part II A, p. 75; Ott 2009, p. 107; non Audouinella pulvinata (Levring) Garbary 1987, p. 145.
 Distribution in India: Maharashtra (Western Ghats, Matheran, Ponsonby Spring Falls; Lake Danger Point growing on stones).
 Notes: Ganesan & West (2013) discussed in detail the need for the new name for this taxon.
description: Published as part of Ganesan, E. K., West, John A. & Jr, Orlando Necchi, 2018, A catalogue and bibliography of non-marine (freshwater and estuarine) Rhodophyta (red algae) of India, pp. 1-48 in Phytotaxa 364 (1) on page 11, DOI: 10.11646/phytotaxa.364.1.1, http://zenodo.org/record/13703374