cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
MS Gr. class. c. 4 877
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1050 col. 7. Philodemus, De morte 4
Drawing by Carlo Orazi
Enriching gender in PER: A binary past and a complex future
Creators: name: Traxler, Adrienne L.
name: Cid, Ximena C.
name: Blue, Jennifer
name: Barthelemy, Ramón
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: In this article, we draw on previous reports from physics, science education, and women's studies to propose a more nuanced treatment of gender in physics education research (PER). A growing body of PER examines gender differences in participation, performance, and attitudes toward physics. We have three critiques of this work: (1) it does not question whether the achievements of men are the most appropriate standard, (2) individual experiences and student identities are undervalued, and (3) the binary model of gender is not questioned. Driven by these critiques, we propose a conception of gender that is more up-to-date with other fields and discuss gender-as-performance as an extended example. We also discuss work on the intersection of identities [e.g., gender with race and ethnicity, socioeconomic status, lesbian, gay, bisexual, and transgender (LGBT) status], much of which has been conducted outside of physics. Within PER, some studies examine the intersection of gender and race, and identify the lack of a single identity as a key challenge of "belonging" in physics. Acknowledging this complexity enables us to further critique what we term a binary gender deficit model. This framework, which is implicit in much of the gender-based PER, casts gender as a fixed binary trait and suggests that women are deficient in characteristics necessary to succeed. Alternative models of gender allow a greater range and fluidity of gender identities, and highlight deficiencies in data that exclude women's experiences. We suggest new investigations that diverge from this expanded gender framework in PER.
description: 27 pages, accepted to Phys. Rev. Special Topics - PER
Centaurea regia var. purpurea Negaresh 2018, var. nov.
Creators: name: Negaresh, Kazem
name: Rahiminejad, Mohammad Reza
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Centaurea
Centaurea regia
Centaurea regia var. purpurea negaresh

description: 28d. Centaurea regia var. purpurea Negaresh, var. nov. (Fig. 66)
 Centaureae regiae var. regiae affinis, a qua spinis terminalibus appendicum mediorum 5–8 mm (nec (8–) 9–14 mm) longis, appendicibus phyllorum mediorum vel interioribus purpuris vel severe purpuris (nec albidis, interdum creamis) differt.
 Type:— IRAN. Prov. Kermanshah: Kermanshah toward Ravansar, 3 km to Ravansar, 1340–1350 m, 27 May 2014, Negaresh & Kamalnejad 114 (holotype herb. Negaresh.!, isotypes FUMH!, herb. Negaresh.!, RUH!)
Terminal spine of median appendages 5–8 mm long; median appendages purple, inner appendages intensely purple.
 Etymology: —The epithet purpurea means ‘appendages purple’.
 Taxonomic and distribution remarks: — Centaurea regia var. purpurea is endemic to Kermanshah Province, W Iran (Fig. 60). It is distinguished from C. regia var. regia by having purple appendages.
 Paratypes:— IRAN. Prov. Kermanshah: Kermanshah to Javanroud, 25 km to Javanroud, 1450 m, 30 June 2012, Ranjbar & Negaresh 28819 (BASU!); Ravansar, 1380 m, 14 June 2012, Ranjbar & Negaresh 28834 (BASU!); 5 km from Ravansar to Kermanshah, 1430 m, 14 June 2012, Ranjbar & Negaresh 28876 (BASU!); Kermanshah to Javanroud, 25 km to Javanroud, bifurcate Javanroud-Paveh, 1450 m, 30 June 2012, Ranjbar & Negaresh 28919 (BASU!).
description: Published as part of Negaresh, Kazem & Rahiminejad, Mohammad Reza, 2018, A revision of Centaurea sect. Cynaroides (Asteraceae, Cardueae-Centaureinae), pp. 448-450 in Phytotaxa 363 (1) on pages 448-450, DOI: 10.11646/phytotaxa.363.1.1, http://zenodo.org/record/13703414
Flows of X-ray gas reveal the disruption of a star by a massive black hole
Creators: name: Miller, Jon M.
name: Kaastra, Jelle S.
name: Miller, M. Coleman
name: Reynolds, Mark T.
name: Brown, Gregory
name: Cenko, S. Bradley
name: Drake, Jeremy J.
name: Gezari, Suvi
name: Guillochon, James
name: Gultekin, Kayhan
name: Irwin, Jimmy
name: Levan, Andrew
name: Maitra, Dipankar
name: Maksym, W. Peter
name: Mushotzky, Richard
name: O'Brien, Paul
name: Paerels, Frits
name: de Plaa, Jelle
name: Ramirez-Ruiz, Enrico
name: Strohmayer, Tod
name: Tanvir, Nial
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Tidal forces close to massive black holes can violently disrupt stars that make a close approach. These extreme events are discovered via bright X-ray and optical/UV flares in galactic centers. Prior studies based on modeling decaying flux trends have been able to estimate broad properties, such as the mass accretion rate. Here we report the detection of flows of highly ionized X-ray gas in high-resolution X-ray spectra of a nearby tidal disruption event. Variability within the absorption-dominated spectra indicates that the gas is relatively close to the black hole. Narrow line widths indicate that the gas does not stretch over a large range of radii, giving a low volume filling factor. Modest outflow speeds of a few hundred kilometers per second are observed, significantly below the escape speed from the radius set by variability. The gas flow is consistent with a rotating wind from the inner, super-Eddington region of a nascent accretion disk, or with a filament of disrupted stellar gas near to the apocenter of an elliptical orbit. Flows of this sort are predicted by fundamental analytical theory and more recent numerical simulations.
description: Published in the Oct 22 2015 issue of Nature
Readers' Advisory Service: adoption and implementation of an innovation in Select Public Libraries
Creators: name: Smith, Andrew
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001
Subjects: Public libraries--Case studies
Information transfer
Public libraries--Administration
Public Librarianship
Reader guidance
Deans Achievement Award--Best Masters Papers Awarded 2002

description: This paper examines the experiences of five public libraries in adopting and implementing readers' advisory service as an innovation. Using the criteria of allocation of resources, support of library administration, professional status of practitioners and promotion of leisure reading, degrees of implementation are examined. Of the five libraries, one had completely implemented the innovation and started re-inventing it to meet local needs. Three had committed to the innovation, but did not meet all of the criteria that comprised full implementation. One seems to be still in the decision-making stage, and cannot be said to have yet adopted the innovation. The processes followed by each library were grounded in behaviors identifiable through the study of the diffusion of innovations. Understanding of innovation diffusion makes it possible for library administrators and funders to identify and encourage innovative staff members.
A Characterization of class groups via sets of lengths {II}
Creators: name: Geroldinger, Alfred
name: Zhong, Qinghai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B30, 11R27, 13A05, 13F05, 20M13

description: Let $H$ be a Krull monoid with finite class group $G$ and suppose that every class contains a prime divisor. If an element $a \in H$ has a factorization $a=u_1 \cdot \ldots \cdot u_k$ into irreducible elements $u_1, \ldots, u_k \in H$, then $k$ is called the length of the factorization and the set $\mathsf L (a)$ of all possible factorization lengths is the set of lengths of $a$. It is classical that the system $\mathcal L (H) = \{ \mathsf L (a) \mid a \in H \}$ of all sets of lengths depends only on the class group $G$, and a standing conjecture states that conversely the system $\mathcal L (H)$ is characteristic for the class group. We verify the conjecture if the class group is isomorphic to $C_n^r$ with $r,n \ge 2$ and $r \le \max \{2, (n+2)/6\}$. Indeed, let $H'$ be a further Krull monoid with class group $G'$ such that every class contains a prime divisor and suppose that $\mathcal L (H)= \mathcal L (H')$. We prove that, if one of the groups $G$ and $G'$ is isomorphic to $C_n^r$ with $r,n$ as above, then $G$ and $G'$ are isomorphic (apart from two well-known pairings).
Restitution of Holocaust-Era Assets: A Bibliography of Government Documents
Creators: name: Sciacca, Gillian R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: Government publications--Bibliography
Holocaust,Jewish(1939-1945)--Reparations--Bibliography
Reparations for historical injustices--Bibliography
Holocaust,Jewish(1939-1945)and art--Bibliography

description: This bibliography addresses the issue of assets stolen from or subsequently denied to victims of the Holocaust and their heirs, as represented by the documentation provided by government resources. As such, it accrues the disparate media documenting the issue of Holocaust-era restitution: the details of original looting and restitution actions, as well as actions taken in the last sixty years that have caused it to become a controversial topic in our contemporary society. Forty government documents were located, evaluated for content, and annotated. Formats include Congressional Hearings, Public Law, Military Histories, and records from the Presidential Advisory Committee on Holocaust Assets. An introduction provides context for the documents, which represent how and why assets were stolen, what happened to them following in the aftermath of World War II, and the subsequent barriers to appropriate restitution that led to current lawmaking on Holocaust victims' behalf. This bibliography is meant to be used by researchers with an interest in the looting and restitution of fine art, financial assets, or gold by the Nazi Party, originally taking place between 1933 and 1945.
THE USE OF TAGS FOR BROWSING PURPOSES IN PUBLIC LIBRARY CATALOGS
Creators: name: Thompson, Jessica
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Online library catalogs
Metadata
tagging
Library catalogs and users
Information technology--Social aspects

description: Public libraries are experimenting within their online catalogs with new means of supporting browsing via tagging systems. Although tagging is promising, research examining the effectiveness of such systems for patrons in this venue is limited. This paper presents results of a research study that examined if tagging in online web-based catalog systems improves browsing. A quasi-experiment was conducted to determine the usefulness of a sample of five online systems using search box verses tagging options to aid in patron searches. Results indicated that tags are useful in advancing the browsability of such catalog systems, but requires further developing to appeal to average patrons and to provide patrons with desired results. Based on the results a theoretical model was developed to aid in further analysis development of potential systems integrating tagging and the usability of these systems. Future studies are anticipated as further developed systems become integrated into web-accessible systems.
A Replication of Forest, A.L., & Wood, J.V. (2012) at Southern Arkansas University Spring 2016
Creators: name: Everett, Delora
name: Leighton, Dana
Publisher: name: Open Science Framework
Year: 2022

description: The purpose of this replication study is to examine the way participants with low and high self esteem use the social media site, Facebook. The study will measure how the participants generally feel about themselves and assessing their perceptions of the ways Facebook can be used. The study will use the Rosenberg Self Esteem Scale (Rosenberg, 1965) and the Perceptions of Facebook scale, both used in the original study. The study will be conducted in a Research Lab at Southern Arkansas University with the maximum of six participants taking the questionnaire in 30 minute sessions. It is completely voluntary for each participant who signs up to fulfill their General Psychology research exposure requirement.
title: Translating security. How right-wing and left-wing political parties have securitized Islam in the UK, France, and Italy
Creators: name: Gaudino, Ugo
Publisher: name: University of Kent
Year: 2023

description: This thesis contributes to research in critical security studies and to current debates on Islamophobia by exploring the historical trajectory and the intra-party dynamics that brought three centre-left parties (the British Labour Party, the French Socialist Party, and the Italian Democratic Party) to securitize Islam. Western governments have securitized Muslims in the last decades. Yet, securitization theories have not sufficiently explored the ideas, tropes, and policies through which securitization manifests across and inside different parties. While there is abundant research on right-wing Islamophobia and on the right-wing adjustment of liberal and left-wing themes, the securitization of Muslims by left-wing parties has been mostly neglected, including by existing securitization theories. Both the Copenhagen and the Paris Schools of securitization provide a shallow account of security politics because they pay limited attention to the way tropes travel across the political spectrum, and the process through which they are adapted and acquire meaning for specific constituencies. Whereas both Schools are methodologically focused on the state as the primary unit of analysis, this thesis provides an original contribution by showing that political parties translate security in the name of various referent objects. This is a necessary step to explain why the same securitized threat (Muslims) is interpreted in different ways by political parties of various political ideologies. Hence, my research question asks: How does securitization travel across and inside parties? I argue that securitization travels across and inside parties through a process called translation, that occurs throughout the appropriation of tropes traditionally belonging to the other political pole. Translation is active, because the tropes are translated into a language coherent with partisan ideologies to make them intelligible for the target audiences, such as party members. Translation is also collective. If the securitization audiences are not persuaded by translation, the process might be rejected, and such rejection can lead to de-securitization. Translation is also possible because of different contextual elements: the party history, the interaction between Right and Left, and significant critical junctures that increased the perception of insecurity raised by Muslims. Building on this analytical framework, the chapters on the UK, France and Italy show that parties translate both inter- and intra-linguistically in the name of different referent objects: balanced race relations, for Labour; secularism (laïcité) for the Socialist Party; human security and gender equality, for the Democratic Party. Moreover, the empirical chapters illustrate that the bulk of translation happens on the Left, as centre-left parties have translated both tropes and policies from the Right, as well as a conservative meaning of security.
Multiway spectral community detection in networks
Creators: name: Zhang, Xiao
name: Newman, M. E. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: One of the most widely used methods for community detection in networks is the maximization of the quality function known as modularity. Of the many maximization techniques that have been used in this context, some of the most conceptually attractive are the spectral methods, which are based on the eigenvectors of the modularity matrix. Spectral algorithms have, however, been limited by and large to the division of networks into only two or three communities, with divisions into more than three being achieved by repeated two-way division. Here we present a spectral algorithm that can directly divide a network into any number of communities. The algorithm makes use of a mapping from modularity maximization to a vector partitioning problem, combined with a fast heuristic for vector partitioning. We compare the performance of this spectral algorithm with previous approaches and find it to give superior results, particularly in cases where community sizes are unbalanced. We also give demonstrative applications of the algorithm to two real-world networks and find that it produces results in good agreement with expectations for the networks studied.
description: 10 pages, 5 figures
Impact of Year-Round Education on Middle School Libraries
Creators: name: Click, Rachel E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: Media programs(education)- School libraries--Middle schools
School libraries--Scheduling

description: This research study investigates the impact of year-round education on middle school libraries. Interviews were conducted with six media specialists practicing in year-round middle schools. Participant responses helped to determine how the year-round schedule affects the media staff; the delivery of services to students and faculty; and the library's collection, equipment, and facility. Findings indicate that the year-round calendar impacts many procedural aspects of scheduling and circulation. The interviews revealed how year-round media specialists developed new procedures. Communication and collaboration were also impacted. Here the media specialists took advantage of the forward-planning required by teachers to increase collaboration; they used technology in creative ways to increase communication with students and staff. Results showed that the year-round calendar increased "wear and tear" on the equipment, collection, and facility, as well as affected how equipment was checked out and stored. The interviews showed areas where the year-round calendar had little impact in the media center: staff size, ordering and processing materials, total books that students can check out, number of copies in the collection, and amount of lost or overdue books.
Three-sublattice Skyrmion crystal in the antiferromagnetic triangular lattice
Creators: name: Rosales, H. D.
name: Cabra, D. C.
name: Pujol, Pierre
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The frustrated classical antiferromagnetic Heisenberg model with Dzyaloshinskii-Moriya (DM) interactions on the triangular lattice is studied under a magnetic field by means of semiclassical calculations and large-scale Monte Carlo simulations. We show that even a small DM interaction induces the formation of an Antiferromagnetic Skyrmion crystal (AF-SkX) state. Unlike what is observed in ferromagnetic materials, we show that the AF-SkX state consists of three interpenetrating Skyrmion crystals (one by sublattice), and most importantly, the AF-SkX state seems to survive in the limit of zero temperature. To characterize the phase diagram we compute the average of the topological order parameter which can be associated to the number of topological charges or Skyrmions. As the magnetic field increases this parameter presents a clear jump, indicating a discontinuous transition from a spiral phase into the AF-SkX phase, where multiple Bragg peaks coexist in the spin structure factor. For higher fields, a second (probably continuous) transition occurs into a featureless paramagnetic phase.
description: 8 pages, 8 figures
Are Environmental Education Picture Books Appropriate for Elementary-School Children?: A Content Analysis
Creators: name: Zynda, Danielle M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: Picture books--Evaluation
Children's reading--Educational aspects
Environmental literature
Environmental education--Children's literature
Picture books--Environmental aspects
Children's literature--Evaluation

description: This study is a content analysis of a selection of environmental awareness picture books. The analysis was conducted to determine the appropriateness of these picture books for teaching environmental education to elementary-school aged children. It was found that most of the environmental education picture books used literary conventions that were inappropriate in terms of children's cognitive understanding, as well as in their understanding of environmental education, but that these problems would not prevent the child from understanding and enjoying most of the books. Ultimately, it was determined that the ideal environmental education picture book is a quality picture book that encourages appreciation of nature and environmental issues in a positive and developmentally appropriate manner.
On the origin of two unidentified radio/X-ray sources discovered with XMM-Newton
Creators: name: García, Federico
name: Combi, Jorge A.
name: Medina, María C.
name: Romero, Gustavo E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We aim at clarifying the nature of the emission of two spatially related unidentified X-ray sources detected with XMM-Newton telescope at intermediate-low Galactic latitude. Observations reveal a point-like source aligned with elongated diffuse emission. The X-ray spectra are best-fitted by absorbed power laws with photon indices ~1.7 for the point-like and ~2.0 for the extended one. Both sources show nonthermal radio-continuum counterparts that might indicate a physical association. From the available data, we did not detect variability on the point-like source in several timescales. Two possible scenarios are analyzed: first, based on HI line absorption, assuming a Galactic origin, we infer a distance upper bound of <2 kpc, which poses a constraint on the height over the Galactic plane of <200 pc and on the linear size of the system of <2.3 pc. In this case, the X-ray luminosities are >10^32 erg/s and >7.5 x 10^32 erg/s, for the point-like and extended sources, respectively; second, an extra-Galactic nature is discussed, where the point-like source might be the core of a radio galaxy and the extended source its lobe. In this case, we compare derived fluxes, spectral indices, and spatial correlation with those typical from the radio galaxy population, showing the feasibility of this alternative astrophysical scenario. From the available observational evidence, we suggest that the most promising scenario to explain the nature of these sources is a system consisting of a one-sided radio galaxy, where the point-like source is an active galactic nucleus and the extended source corresponds to the emission from its lobe. Other possibilities include a PSR/PWN origin, where the radio/X-ray emission originates from the synchrotron cooling of relativistic particles in the PSR magnetic field or a casual alignment between two unrelated sources, such as an AGN core and a Galactic X-ray blob.
description: 6 pages, 2 figures. Accepted for publication in Astronomy and Astrophysics (A&A)
Coarse Quantum Measurement: An analysis of the Stern Gerlach experiment
Creators: name: Reddy, Anirudh
name: Samuel, Joseph
name: Shivam, Kumar
name: Sinha, Supurna
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Quantum Measurement Process in a Stern-Gerlach setup with the spin of a silver atom as the quantum system and the position as the apparatus. The system and the apparatus are treated quantum-mechanically using unitary evolution. The new ingredient in our analysis is the idea that the probes determining the position of the silver atom are limited in resolution. We show using a Wigner matrix that due to the coarseness of the detection process, the pure density matrix appears to evolve to an impure one. We quantify the information gained about the spin in a coarse position measurement.
description: 7 pages, 5 figures, accepted for publication
MS Gr. class. c. 4 882
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1056 fr. 1.2.1. Epicurus, De natura 25
Drawing by Giuseppe Casanova
The Impact of Adult Graphic Novel Placement on Circulation in Public and Academic Libraries
Creators: name: Georges, Althea
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Comic books, strips, etc.
Graphic novels
Shelving of books, periodicals, etc.

description: Despite their increasing popularity, adult graphic novels remain a highly misunderstood resource. This study was intended to determine whether placing graphic novels in certain locations would impact their circulation. The underlying assumption was that exposure to graphic novels would lead to a greater amount of circulations as adults unfamiliar with graphic novels would be more willing to pick them up when viewed more easily.
Four academic libraries and six public libraries were asked to provide yearly and total circulation numbers of 38 bestselling adult graphic novels. All academic libraries and five public libraries responded. It was found that adult graphic novels that were given their own section circulated more frequently both yearly and for all time than those interfiled with child or young adult graphic novels or non graphic resources. Graphic novels that were not placed in a prominent location were also checked out more frequently for all time than those that were located in a prominent location.
A content analysis of job qualifications for business librarians and how they relate to library science curriculums
Creators: name: Glackin, Deborah S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: Librarians
Job Analysis Business
Content analysis

description: This study explores the job qualifications that employers of business librarians seek. Necessary skills, education, and experience are analyzed and discussed. Job titles and locations are quantified. Library science curriculums are analyzed to determine which schools are preparing students with courses most relevant to business library positions. Employers most often list interpersonal skills (41%) as a required or preferred skill in job advertisements, yet this is the area in which schools of information and library science are most often lacking courses. After interpersonal skills, employers look for business-specific skills (20%), searching skills (16%), library skills (14%), and, computer/technical skills (9%).
The dynamics of simple gene-network motifs subject to extrinsic fluctuations
Creators: name: Roberts, Elijah
name: Be'er, Shay
name: Bohrer, Chris
name: Sharma, Rati
name: Assaf, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Cellular processes do not follow deterministic rules; even in identical environments genetically identical cells can make random choices leading to different phenotypes. This randomness originates from fluctuations present in the biomolecular interaction networks. Most previous work has been focused on the intrinsic noise (IN) of these networks. Yet, especially for high-copy-number biomolecules, extrinsic or environmental noise (EN) has been experimentally shown to dominate the variation. Here, we develop an analytical formalism that allows for calculation of the effect of EN on gene-expression motifs. We introduce a method for modeling bounded EN as an auxiliary species in the master equation. The method is fully generic and is not limited to systems with small EN magnitudes. We focus our study on motifs that can be viewed as the building blocks of genetic switches: a nonregulated gene, a self-inhibiting gene, and a self-promoting gene. The role of the EN properties (magnitude, correlation time, and distribution) on the statistics of interest are systematically investigated, and the effect of fluctuations in different reaction rates is compared. Due to its analytical nature, our formalism can be used to quantify the effect of EN on the dynamics of biochemical networks and can also be used to improve the interpretation of data from single-cell gene-expression experiments.
description: 15 pages, 4 figures
Spatiotemporal assessment and monitoring of hydrocarbons contamination of water and sediments in skikda bay (algeria)
Creators: name: Belahmadi, Mohamed Seddik Oussama
name: Abdessemed, Ala
name: Gherib, Abdefettah
name: Charchar, Nabil
name: Houali, Karim
name: Houhamdi, Moussa
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry

description: The current study aims to the spatiotemporal assessment and monitoring of hydrocarbons contamination in water and sediments of Skikda bay (Algeria), as a result of the presence of industrial wastewater rejected by a petroleum refinery complex in the area. Water and sediment samples were obtained from six different sites during the fourth seasons in the studies area. Total Hydrocarbons (THC) were determined by a gravimetric method, while polycyclic aromatic hydrocarbons (PAHs)(Anthracene, Pyrene and Benzo (a) pyrene) were determined by using High-Performance Liquid Chromatography (HPLC-UV/Vis). The results obtained indicateda high contamination by hydrocarbons in water and sediment samples from the sites exposed to the industrial refinery.The concentrations of THC, Anthracene, Pyrene and Benzo (a) pyrene recorded in water during the four seasons were in this order: 78–9457 µg/L; < LOD Anthracene −157.1 µg/L; < LOD Pyrene- 188.6 µg/L; < LOD Benzo (a) pyrene −2224.45 µg/L respectively, with averages of: 1209.14 µg/L; 16.03 µg/L; 22.98 µg/L; 119.03 µg/L respectively. While the concentrations of THC, Anthracene, Pyrene and Benzo (a) pyrene recorded in sediments during the four seasons were in this order: 323–185,450 µg/g dw;< LOD Anthracene – 87,624.7 µg/g dw;< LOD Pyrene- 17,485.5 µg/g dw;< LOD Benzo (a) pyrene −39,555.5 µg/g dw respectively,With averages of: 13,201.264 µg/g dw; 4199.966 µg/g dw and 1524.478 µg/g dw; 2464.815 µg/g dw respectively.An important seasonal impact in the water was demonstrated by the threecompounds selected for this analysis (Anthracene, Pyrene, and Benzo (a) pyrene). While in sediments, just THC showed significant seasonal variations. This variation can be attributed to the influence of physicochemical parameters, microbial load, reject flow and the type of hydrocarbon studied. Thereby, Wastewater in the refinery should be well treated to protect marine life and human safety.
Stochastic approach to phonon-assisted optical absorption
Creators: name: Zacharias, Marios
name: Patrick, Christopher E.
name: Giustino, Feliciano
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We develop a first-principles theory of phonon-assisted optical absorption in semiconductors and insulators which incorporates the temperature dependence of the electronic structure. We show that the Hall-Bardeen-Blatt theory of indirect optical absorption and the Allen-Heine theory of temperature-dependent band structures can be derived from the present formalism by retaining only one-phonon processes. We demonstrate this method by calculating the optical absorption coefficient of silicon using an importance sampling Monte Carlo scheme, and we obtain temperature-dependent lineshapes and band gaps in good agreement with experiment. The present approach opens the way to predictive calculations of the optical properties of solids at finite temperature.
description: 11 pages, 9 figures
Web Sites as Found Objects: Online Instruction at Five Undergraduate Colleges
Creators: name: Bardeen, Angela L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006
Subjects: Web-based instruction
Undergraduate Colleges
Library Web site
Library instruction

description: This study examined online library instruction provided by small, undergraduate colleges. Content analysis was performed on library Web sites at five baccalaureate colleges with student bodies ranging in size from 1,000 to 3,000. These Web sites were reviewed in order to determine what kind of patterns appeared in online library instruction at small colleges. Guiding questions related to information literacy standards, undergraduate learning styles, and principles of good Web and instructional design were applied to each library site. The results indicate that while these libraries show strengths in promoting information literacy standards through navigable instruction, there is a need for attention to undergraduate visual and kinesthetic learning styles.
Effect of reaction step-size noise on the switching dynamics of stochastic populations
Creators: name: Be'er, Shay
name: Heller-Algazi, Metar
name: Assaf, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In genetic circuits, when the mRNA lifetime is short compared to the cell cycle, proteins are produced in geometrically-distributed bursts, which greatly affects the cellular switching dynamics between different metastable phenotypic states. Motivated by this scenario, we study a general problem of switching or escape in stochastic populations, where influx of particles occurs in groups or bursts, sampled from an arbitrary distribution. The fact that the step size of the influx reaction is a-priori unknown, and in general, may fluctuate in time with a given correlation time and statistics, introduces an additional non-demographic step-size noise into the system. Employing the probability generating function technique in conjunction with Hamiltonian formulation, we are able to map the problem in the leading order onto solving a stationary Hamilton-Jacobi equation. We show that bursty influx exponentially decreases the mean escape time compared to the "usual case" of single-step influx. In particular, close to bifurcation we find a simple analytical expression for the mean escape time, which solely depends on the mean and variance of the burst-size distribution. Our results are demonstrated on several realistic distributions and compare well with numerical Monte-Carlo simulations.
description: 5 pages, 3 figures, 1 table
MS Gr. class. c. 4 883
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1056 fr. 1.3.2. Epicurus, De natura 25
Drawing by Giuseppe Casanova
Seasonal evaluation of total organic carbon removal from river samples using scrap metal-based coagulant and local salt modified-biomaterials for point-of-use water treatment
Creators: name: Igwe, David
name: Afiukwa, Joseph
name: Nwabue, Frank
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: This study evaluated the potentials of activated carbon prepared from coconut shell (CS) (Cocos nucifera), counter wood (CW) (Afzelia africana) and iron (III) sulphate coagulant (ISC) prepared from scrap iron, in removing total organic carbons (TOCs) from contaminated Ebonyi river (EBRW) and Ezeiyiaku river samples (ERWA) at point – of – use (POU). A 250 ml of the river samples at ambient pH were mechanically (hands) batch – agitated with optimised doses of 0.5, 1.5, and 0.025 g of granulated activated coconut shell carbon (GACSC), granulated activated counter wood carbon (GACWC), and ISC at the two seasons. The results showed a 90 and 100% reduction in the TOCs of the treated ERWA and EBRW samples during the rainy season, while and at dry season, 88% reduction in TOCs was observed in both treated river samples.
Viscous Coupled Fluids in Inflationary Cosmology
Creators: name: Brevik, I.
name: Timoshkin, A. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the inflation produced by two coupled fluids in the flat Friedmann-Robertson-Walker universe. Different cosmological models for describing inflation by use of an inhomogeneous equation of state for the fluid are investigated. The gravitational equations for energy and matter are solved, and analytic representations for the Hubble parameter and the energy density are obtained. Corrections in the energy density for matter inducing the inflation and the coupling with energy are discussed. We analyze the description of inflation induced by non-constant equation-of-state parameters from fluid viscosity. The correspondence between the spectral index and the tensor-to-scalar ratio recently observed by the Planck satellite is considered.
description: 7 pages latex, no figures. To appear in JETP
MS Gr. class. c. 4 884
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1056 fr. 1.3.3. Epicurus, De natura 25
Drawing by Giuseppe Casanova
Collecting Patterns of Women's Studies Monographs in Religious and Non-Religious University Libraries
Creators: name: Stout, Jennifer
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Collection development--Evaluation
Religious libraries and collections
Collection development--College and university libraries

description: This study examines the print library collections of ten private, Christian universities and ten public, secular universities for holdings of women's studies and feminist monographs. Using a comprehensive bibliography of recommended women's studies and feminist works (Women's Studies: A Recommended Bibliography), a list of 301 titles were compiled by random selection. The author used WorldCat to search for each title and record which of the selected libraries owned each title. The findings indicate that the public, secular universities owned an average of 32% of the titles while the private, Christian universities owned an average of 13% of the titles. This paper discusses these results and the possible factors that contribute to the selection patterns of the two groups of university libraries examined.
Assessing Collection Silence: Access to Japanese Woodblock Prints at Twenty-Two American University Museums
Creators: name: Folks, Madison
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: This descriptive study returned to the 22 participant institutions of the ASIANetwork / Luce Asian Art Consultancy program (2005–2008) to question the narrative of Japanese woodblock prints through the organization and accessibility of their collections. As this study was concerned with implicit ontologies and not officially articulated meanings, all data was collected through content analysis of the manifest content of digital object records and collection organization.Following the analysis of 22 collections and 30 individual records, this study found that the narrative remains silent for 12 of the 22 institutions – their collections had no digital presence. For the other 10 institutions, existing records were riddled with inconsistent, incorrect, and westocentrically-framed information. Though the scope of this project was narrow, this study can provide a model for questioning constructions of value, cultural exclusion, and the unintended narratives that unfold through the organization and accessibility of art collections.
Numerically Predicted Indirect Signatures of Terrestrial Planet Formation
Creators: name: Leinhardt, Zoë M.
name: Dobinson, Jack
name: Carter, Philip J.
name: Lines, Stefan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The intermediate phases of planet formation are not directly observable due to lack of emission from planetesimals. Planet formation is, however, a dynamically active process resulting in collisions between the evolving planetesimals and the production of dust. Thus, indirect observation of planet formation may indeed be possible in the near future. In this paper we present synthetic observations based on numerical N-body simulations of the intermediate phase of planet formation including a state-of-the-art collision model, EDACM, which allows multiple collision outcomes, such as, accretion, erosion, and bouncing events. We show that the formation of planetary embryos may be indirectly observable by a fully functioning ALMA telescope if the surface area involved in planetesimal evolution is sufficiently large and/or the amount of dust produced in the collisions is sufficiently high in mass.
description: Accepted for publication in ApJ
MS Gr. class. c. 4 885
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1056 fr. 2.1. Epicurus, De natura 25
Drawing by Giuseppe Casanova
Must It Be Perfect? An Analysis of Statements of Purpose Submitted to UNC SILS, 2003-2007
Creators: name: Vossler, Joshua
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: College applications--United States
Library education--United States
Universities and colleges--United States--Graduate work--Admission

description: The purpose of this study is to gain an understanding of the topics and rhetorical approaches used in statements of purpose (SPs) submitted to the UNC School of Library and Information Science (SILS) over the last four years. This study was motivated by the lack of useful guidelines available to help applicants write competitive SPs, as well as a dearth of research on the subject of personal statements within library and information science (LIS) as a field. Using a combined method of content analysis and close reading, this study analyzed a corpus of SPs and UNC SILS faculty responses to questionnaires. The findings of this study describe general and specific qualities possessed by successful SPs submitted to SILS' Master's program.
Brane webs, $5d$ gauge theories and $6d$ $\mathcal{N}$$=(1,0)$ SCFT's
Creators: name: Zafrir, Gabi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study $5d$ gauge theories that go in the UV to $6d$ $\mathcal{N}$$=(1,0)$ SCFT. We focus on these theories that can be engineered in string theory by brane webs. Given a theory in this class, we propose a method to determine the $6d$ SCFT it goes to. We also discuss the implication of this to the compactification of the resulting $6d$ SCFT on a torus to $4d$. We test and demonstrate this method with a variety of examples.
description: 61 pages, 51 figures; v2 typos corrected, version published in JHEP
Budgets, Kriterien und Kompetenzen – die finanziellen Dimensionen der Open-Access-Transformation gestalten (Bericht des DFG-Projekts Transform2Open)
Creators: name: Meistring, Marcel
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: Open-Access-Tage 2023, OAT23, Berlin, Germany, 27 Sep 2023 - 29 Sep 2023; doi:10.5281/ZENODO.8389703
description: Das DFG-geförderte Projekt Transform2Open widmet sich der Weiterentwicklung von Budgets, Kriterien, Kompetenzen sowie den damit verbundenen Prozessen an Hochschulen und außeruniversitären Forschungseinrichtungen im Hinblick auf die finanziellen Dimensionen der Open-Access-Transformation. Prämisse hierbei ist, dass die Open-Access-Transformation nur kooperativ und unter Einbezug aller relevanten Stakeholder erfolgreich gestaltet werden kann. Im Beitrag werden das Projekt Transform2Open und erste Ergebnisse vorgestellt, so z. B. Erkenntnisse zu Problemfeldern und Handlungsbedarfen aus dem öffentlichen Workshop des Projekts zum Thema „Kostenmonitoring“ sowie aus einem Workshop zu den „Allianz-Empfehlungen für transformative Zeitschriftenverträge mit Publikationsdienstleistern“. Im Rahmen der Open-Access-Tage wird der organisationsübergreifende Diskurs zur Gestaltung der Open-Access-Transformation maßgeblich unterstützt. So wird in der Diskussion auch die Verbindung von Transform2Open zu verwandten Vorhaben (u. a. die Fokusgruppe Informationsbudget, open-access.network und das DFG-geförderte Projekt openCost) fokussiert. Projektpartner*inInnen von Transform2Open sind die Zentralbibliothek des Forschungszentrums Jülich, die Universitätsbibliothek der Universität Potsdam und das Helmholtz Open Science Office der Helmholtz-Gemeinschaft.
Hispanic and Latino Students and Their Library Experiences and Attitudes at a University in the Southeast
Creators: name: Sanders, Rachel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016
Subjects: College and university libraries--Reference services
Academic achievement--United States
Hispanic American college students

description: This study describes a survey of Hispanic and Latino students at a major research university in North Carolina. The purpose of the survey was to determine students' satisfaction with and use of the university's libraries. The study also included six interviews with students, which discussed more in-depth their attitudes toward library use at their university and their research processes.
Hispanic and Latino students are at a higher risk for dropping out of college during their first few years than many of their counterparts. There are a number of factors which influence this dropout rate; among them is a lack of support on campus. When students do not identify with their librarians they become less likely to approach librarians for assistance with coursework. The interviewees' feedback supports the literature which claims that Hispanic and Latino students are hesitant to approach librarians and are not necessarily confident in their research abilities.