cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Role of energy uncertainties in ergodicity breaking induced by competing interactions and disorder. A dynamical assessment through the Loschmidt echo
Creators: name: Zangara, Pablo R.
name: Levstein, Patricia R.
name: Pastawski, Horacio M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A local excitation in a quantum many-particle system evolves deterministically. A time-reversal procedure, involving the invertion of the signs of every energy and interaction, should produce an excitation revival: the Loschmidt echo (LE). If somewhat imperfect, only a fraction of the excitation will refocus. We use such a procedure to show how non-inverted weak disorder and interactions, when assisted by the natural reversible dynamics, fully degrade the LE. These perturbations enhance diffusion and evenly distribute the excitation throughout the system. Such a dynamical paradigm, called ergodicity, breaks down when either the disorder or the interactions are too strong. These extreme regimes give rise to the well known Anderson localization and Mott insulating phases, where quantum diffusion becomes restricted. Accordingly, regardless of the kinetic energy terms, the excitation remains mainly localized and out-of-equilibrium, and the system behaves non-ergodically. The LE constitutes a fair dynamical witness for the whole phase diagram since it evidences a surprising topography in which ergodic and non-ergodic phases interpenetrate each other. Furthermore, we provide an estimation for the critical lines separating the ergodic and non-ergodic phases around the Mott and Anderson transitions. The energy uncertainties introduced by disorder and interaction shift these thresholds towards stronger perturbations. Remarkably, the estimations of the critical lines are in good agreement with the phase diagram derived from the LE dynamics.
description: 9 pages, 1 figures
Current Methods for Access, Use and Collection Development: An Analysis of Artists' Book Collections
Creators: name: Morris, Elizabeth A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Libraries Special collections Artists' books
Artists' books

description: Artists' books are interesting and unique works that can be used across disciplines, but are often underutilized in many institutions. This study examines three different artists' book collections in the Southeastern US for methods of how materials are accessed and used. The study also examines collection development practices within each collection in order to provide a deeper understanding into the distinct nature of artists' books. Data for access and use was gathered through website and OPAC analysis and physical site visits. Additionally, interviews were conducted for information on collection development, as well as access and use. This paper analyzes current methods for access, use and collection development of three existing artists' book collections in order to identify problems and issues while providing suggestions for improvement.
The file naming habits of personal computer users
Creators: name: Chapman, Heather
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Windows (Computer Programs)
Information Storage and Retrieval Systems--File Management (Computer Science)
Computer File Names
Onomasiology--Reference (Linguistics)

description: This study is an extension of research by J.M. Carroll (1982) on the naming of personal computer files. Eleven one-on-one interviews were conducted with both veteran and novice Personal Computer users to gain insights into the filenaming habits of individuals and the reasons for each of these naming behaviors.  Randomly-selected filenames were examined both in isolation and within the context of other filenames, for morphological, lexical and semantic attributes and patterns; and evidence of the participants' purposes in employing each technique was obtained from the interview transcripts. The range of different filenaming strategies observed in this sample has implications for both the design of future measures of filenaming behavior, and of improved file management systems.
Edge states for the Kalmeyer-Laughlin wave function
Creators: name: Herwerth, Benedikt
name: Sierra, Germán
name: Tu, Hong-Hao
name: Cirac, J. Ignacio
name: Nielsen, Anne E. B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study lattice wave functions obtained from the SU(2)$_1$ Wess-Zumino-Witten conformal field theory. Following Moore and Read's construction, the Kalmeyer-Laughlin fractional quantum Hall state is defined as a correlation function of primary fields. By an additional insertion of Kac-Moody currents, we associate a wave function to each state of the conformal field theory. These wave functions span the complete Hilbert space of the lattice system. On the cylinder, we study global properties of the lattice states analytically and correlation functions numerically using a Metropolis Monte Carlo method. By comparing short-range bulk correlations, numerical evidence is provided that the states with one current operator represent edge states in the thermodynamic limit. We show that the edge states with one Kac-Moody current of lowest order have a good overlap with low-energy excited states of a local Hamiltonian, for which the Kalmeyer-Laughlin state approximates the ground state. For some states, exact parent Hamiltonians are derived on the cylinder. These Hamiltonians are SU(2) invariant and nonlocal with up to four-body interactions.
description: 17 pages, 8 figures, 3 tables; v4: error bars and fig. 6 corrected + minor corrections
Experiment 01
Creators: name: Salomon, Ilyssa
name: Forster, Daniel
name: Pedersen, Eric
name: McAuliffe, William
name: McCullough, Michael
name: Gomes, Cristina
name: Ohtsubo, Yohsuke
name: Kurzban, Robert
name: Aboul-Seoud, Fatima
name: Medina, Daniel
Publisher: name: Open Science Framework
Year: 2022

description: This experiment is designed to test the effects of reconciliatory gestures, particularly verbal apologies and offers of compensation, following a transgression. Little is known about how people respond to reconciliatory gestures; it could be that, following an apology, victims of a transgression become less punitive, more generous, more trusting, or respond with any combination of the aforementioned dispositions. Participants (n = 900) will be recruited through Amazon's Mechanical Turk. Participants will play 29 rounds of an Iterated Prisoner's Dilemma Game (PDG) with a confederate who is playing a generous tit-for-tat strategy (i.e., cooperating on the first round and, if defected upon, cooperating with 50% probability on following rounds until cooperated with again). The game will occasionally be interrupted by one of two other tasks: 1) the Relationship Value and Exploitation Risk Measure—For Rating Non-Close Others (RVEX-NCO) questionnaire and 2) a message from the confederate. Unfairness Manipulation: The first message from the confederate will suggest to the participant to cooperate. Following the first message, the confederate will defect for 7 rounds, deviating from the typical generous tit-for-tat strategy. Apology Manipulation: The second message will be one of three variants: 1) An apologetic message, in which the confederate apologizes for defecting and offers monetary compensation; 2) An aggravating message, in which the confederate acknowledges the uncooperative behavior but does not apologize; or 3) a neutral message, in which the confederate does not acknowledge the uncooperative behavior and does not apologize. Effect of Apology: Following the PDG, participants will be randomly assigned to play one of three games with the confederate to measure, respectively, trust, generosity, and punitiveness: 1) a Trust Game, in which the participant is always assigned to be the Investor and the confederate is always assigned to be the Trustee; 2) a Dictator Game, in which the participant is always assigned to be the Dictator and the confederate is always assigned to be the Recipient; or 3) a Pay-to-Punish Game, in which the participant is always assigned to be the Decision-Maker and the confederate is always assigned to be the Recipient. We will also collect data using the Transgression-Related Interpersonal Motivations Scale—For Rating Non-Close Others (TRIM-NCO) following the second game, as well as information regarding whether participants were suspicious about the authenticity of the interaction. Data has already been collected on 57 subjects from the University of Miami's psychology student subject pool. These data were not analyzed, but instead were used to inform modifications to the protocol to improve the clarity of instructions and believability of the experiment.
An Effective Field Theory for Forward Scattering and Factorization Violation
Creators: name: Rothstein, Ira Z.
name: Stewart, Iain W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Starting with QCD, we derive an effective field theory description for forward scattering and factorization violation as part of the soft-collinear effective field theory (SCET) for high energy scattering. These phenomena are mediated by long distance Glauber gluon exchanges, which are static in time, localized in the longitudinal distance, where $|t| \ll s$. In hard scattering, Glauber gluons can induce corrections which invalidate factorization. With SCET, Glauber exchange graphs can be calculated explicitly, and are distinct from graphs with soft, collinear, or ultrasoft gluons. We derive a complete basis of operators which describe the leading power effects of Glauber exchange. Key ingredients include regulating light-cone rapidity singularities and subtractions which prevent double counting. Our results include a novel all orders gauge invariant pure glue soft operator which appears between two collinear rapidity sectors. The 1-gluon Feynman rule for the soft operator coincides with the Lipatov vertex, but it also contributes to emissions with $\ge 2$ soft gluons. Our Glauber operator basis is derived using tree level and one-loop matching calculations from full QCD to SCET. The rapidity RGE yields gluon Reggeization at the amplitude level, and gives the BFKL equation for the soft and collinear functions in the forward scattering cross section. We derive an explicit rule for when eikonalization is valid, and provide a direct connection to the picture of multiple Wilson lines crossing a shockwave. In hard scattering operators Glauber subtractions for soft and collinear loop diagrams ensure that we are not sensitive to the directions for soft and collinear Wilson lines. Conversely, certain Glauber interactions can be absorbed into these soft and collinear Wilson lines by taking them to be in specific directions. We also discuss criteria for factorization violation.
description: 207 pages, 39 figures, v3, relative to JHEP: signs in Sec.11 and App.C fixed to follow same convention for color matrices as earlier sections, order of color indices in App.B.1 fixed, minor typos corrected
Magnetic field tuning and quantum interference in a Cooper pair splitter
Creators: name: Fülöp, G.
name: Domínguez, F.
name: d'Hollosy, S.
name: Baumgartner, A.
name: Makk, P.
name: Madsen, M. H.
name: Guzenko, V. A.
name: Nygård, J.
name: Schönenberger, C.
name: Yeyati, A. Levy
name: Csonka, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Cooper pair splitting (CPS) is a process in which the electrons of naturally occurring spin-singlet pairs in a superconductor are spatially separated using two quantum dots. Here we investigate the evolution of the conductance correlations in an InAs CPS device in the presence of an external magnetic field. In our experiments the gate dependence of the signal that depends on both quantum dots continuously evolves from a slightly asymmetric Lorentzian to a strongly asymmetric Fano-type resonance with increasing field. These experiments can be understood in a simple three - site model, which shows that the nonlocal CPS leads to symmetric line shapes, while the local transport processes can exhibit an asymmetric shape due to quantum interference. These findings demonstrate that the electrons from a Cooper pair splitter can propagate coherently after their emission from the superconductor and how a magnetic field can be used to optimize the performance of a CPS device. In addition, the model calculations suggest that the estimate of the CPS efficiency in the experiments is a lower bound for the actual efficiency.
description: 5 pages + 4 pages supplementary information
Current and projected interior design possibilities for the Children's Department at Chapel Hill Public Library
Creators: name: Dudney, Camille
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000
Subjects: Architecture and building--Children's rooms
Children's library services
Architecture and building--Color, decoration, etc.
Furniture
Architecture and building--Evaluation
Architecture and building--Exhibits and displays

description: This study describes and evaluates the layout and interior design of the Children's Department at Chapel Hill Public Library. It includes two sets of interior design and space planning suggestions for the Children's Department--Ones that could be implemented now and ones geared for adaptation after the department has undergone an expansion. The paper is divided according to the following categories: furniture, safety, lighting, color, walls, flooring, windows, artistic elements, and space planning. A multitude of techniques are outlined for creating an environment that respects children and their needs for physical movement, comfort, privacy, social interaction, and intellectual and creative stimulation.
title: Young autistic adults: Transition practices, self-determination, and post-school quality of life
Creators: name: Glasby, Karen
Publisher: name: University of Southern Queensland
Year: 2022
Subjects: subject: Autism, post-school transition, quality of life, self-determination
classificationCode: 390407
subject: Inclusive education
valueUri: https://www.abs.gov.au/statistics/classifications/australian-and-new-zealand-standard-research-classification-anzsrc/latest-release
classificationCode: 390411
subject: Special education and disability
valueUri: https://www.abs.gov.au/statistics/classifications/australian-and-new-zealand-standard-research-classification-anzsrc/latest-release

description: The purpose of this proposed research was to describe the perceptions of young autistic adults, and their parents, regarding the transition practices implemented during their secondary education. The impact of these practices on the young adults' post-school quality of life (QoL) was also considered. Transition practices are implemented for all students in Queensland secondary schools and are recommended as a guide for the student's education, ensuring that it focuses on preparing students to make a successful transition from school to post-school options. Considering the very specific challenges experienced by young autistic adults in achieving good QoL after school, the effectiveness of current transition practices for autistic students in Queensland schools were unknown. The proposed research was conducted within an overarching theoretical framework of self-determination theory (Deci & Ryan, 2002), while considering the interconnectedness of transition practices and postschool QoL through the well-established and research-based frameworks; Kohler's (1996) Taxonomy for Transition Programming, and Schalock's (2004) Quality of Life indicators. A multiple case study design was used to gather qualitative data from young autistic adults who have made the transition from secondary school to postschool options, and their parents, in Queensland. This research provided a valuable understanding into the relationship between current transition practices and postschool QoL, thus providing a key step in the ongoing evaluation and improvement agenda for Queensland secondary schools. The findings of the proposed research contributed to an understanding of the applicability of these frameworks, and also provided practical knowledge to all stakeholders involved in school to post-school transitions for autistic adolescents and young adults.
Size Dependence of Metal-Insulator Transition in Stoichiometric Fe3O4 Nanocrystals
Creators: name: Lee, Jisoo
name: Kwon, Soon Gu
name: Park, Je-Geun
name: Hyeon, Taeghwan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetite (Fe3O4) is one of the most actively studied materials with a famous metal-insulator transition (MIT), so-called the Verwey transition at around 123 K. Despite the recent progress in synthesis and characterization of Fe3O4 nanocrystals (NCs), it is still an open question how the Verwey transition changes on a nanometer scale. We herein report the systematic studies on size dependence of the Verwey transition of stoichiometric Fe3O4 NCs. We have successfully synthesized stoichiometric and uniform-sized Fe3O4 NCs with sizes ranging from 5 to 100 nm. These stoichiometric Fe3O4 NCs show the Verwey transition when they are characterized by conductance, magnetization, cryo-XRD, and heat capacity measurements. The Verwey transition is weakly size-dependent and becomes suppressed in NCs smaller than 20 nm before disappearing completely for less than 6 nm, which is a clear, yet highly interesting indication of a size effect of this well-known phenomena. Our current work will shed new light on this ages-old problem of Verwey transition.
description: 18 pages, 4 figures, Nano Letters (accepted)
Magnetoresistance of heavy and light metal/ferromagnet bilayers
Creators: name: Avci, Can Onur
name: Garello, Kevin
name: Mendil, Johannes
name: Ghosh, Abhijit
name: Blasakis, Nicolas
name: Gabureac, Mihai
name: Trassin, Morgan
name: Fiebig, Manfred
name: Gambardella, Pietro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We studied the magnetoresistance of normal metal (NM)/ferromagnet (FM) bilayers in the linear and nonlinear (current-dependent) regimes and compared it with the amplitude of the spin-orbit torques and thermally induced electric fields. Our experiments reveal that the magnetoresistance of the heavy NM/Co bilayers (NM = Ta, W, Pt) is phenomenologically similar to the spin Hall magnetoresistance (SMR) of YIG/Pt, but has a much larger anisotropy, of the order of 0.5%, which increases with the atomic number of the NM. This SMR-like behavior is absent in light NM/Co bilayers (NM = Ti, Cu), which present the standard AMR expected of polycrystalline FM layers. In the Ta, W, Pt/Co bilayers we find an additional magnetoresistance, directly proportional to the current and to the transverse component of the magnetization. This so-called unidirectional SMR, of the order of 0.005%, is largest in W and correlates with the amplitude of the antidamping spin-orbit torque. The unidirectional SMR is below the accuracy of our measurements in YIG/Pt.
description: 14 pages, 5 figures
Freely Available and Paid-For Electronic Journals: A Comparative Study of Use
Creators: name: Waldenberg, Alison
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006
Subjects: Online Public Access Catalogs
College and Research Libraries
Open access
Electronic journals
Scholarly communication

description: When deciding what to include in their online public access catalogs, libraries struggle with how to handle open access, freely available electronic scholarly resources. One component that has been missing from the discussion is a use study that examines the access of freely available electronic journals that are not managed by large publishers or vendors. An examination of the use of freely available open access journals through the library catalog may offer more insight into this discussion. This paper is an empirical study comparing usage statistics gathered at the University of North Carolina at Chapel Hill's University Library. Evidence suggests that paid-for journals receive more use, but that freely available journals are still accessed
Minimization and Equivalence in Multi-valued Logical Models of Regulatory Networks
Creators: name: Streck, Adam
name: Lorenz, Therese
name: Siebert, Heike
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Multi-valued logical models can be used to describe biological networks on a high level of abstraction based on the network structure and logical parameters capturing regulatory effects. Interestingly, the dynamics of two distinct models need not necessarily be different, which might hint at either only non-functional characteristics distinguishing the models or at different possible implementations for the same behaviour. Here, we study the conditions allowing for such effects by analysing classes of dynamically equivalent models and both structurally maximal and minimal representatives of such classes. Finally, we present an efficient algorithm that constructs a minimal representative of the respective class of a given multi-valued model.
description: a preprint of a journal version, contains a correction to Algorithm 1, lines 6 and 7
An Assessment of the Impact of Content Standards on the Creation of MARC Records for Archival Collections
Creators: name: Berkowitz, Jodi M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006
Subjects: Anglo-American cataloguing rules
Cataloging of archival material--Standards
Archives
Descriptive cataloging--Rules

description: Cataloging practices for archival collections are not standardized. While finding aids rather than MARC catalog records are the descriptive tool of choice for archival collections, in order for archival collections to be included in a repository's catalog, MARC records must be prepared for these collections. This research investigates the impact of successive content standards for archival description on the preparation of MARC records for archival collections in order to improve representation of archival collections in MARC records.
Breadcrumb Navigation Deployment in Retail Web Sites
Creators: name: Aery, Sean C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007
Subjects: World Wide Web--Navigational Aids
Web sites--Design
Corporations--Internet Resources
World Wide Web--Electronic Commerce

description: In online retailing, effective navigation aids can help users to find products of interest, thus contributing to a site's usability and, ultimately, increasing sales. A breadcrumb trail in a Web site serves as a secondary navigation aid to help users to see a site's structure, visualize a path he or she has taken to a page or product, or otherwise understand the relationship of a page's contents to other pages within a site. Through content analysis, this study explored the deployment of breadcrumbs - both in presentational and functional terms - in the Web sites of the top 100 online retailers (by annual sales). A wide variety of implementations was discovered and documented. Many deployments proved to be incongruent with recommendations in the literature. Analysis was performed given the perspective of an existing research framework developed by Instone (2002) which classified breadcrumbs into three types. A considerable number of sites' deployments could not be sufficiently classified using that model. As a result, changes to the framework are suggested, including the addition of new concepts such as "facet breadcrumbs" and "hybrid breadcrumbs."
Endogenizing the Cost Parameter in Cournot Oligopoly
Creators: name: Leonardos, Stefanos
name: Melolidakis, Costis
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 91A10, 91A40

description: We study the effects of endogenous cost formation in the classic Cournot oligopoly through an extended two-stage game. The competing Cournot firms produce low-cost but limited quantities of a single homogeneous product. For additional procurements, they may refer to a revenue-maximizing supplier who sets a wholesale price prior to their orders. We express this chain as a two-stage game and study its equilibrium under two different information levels: complete and incomplete information on the side of the supplier about the actual market demand. In the deterministic case, we derive the unique subgame perfect Nash equilibrium for different values of the retailers' capacity levels, supplier's cost and market demand. To study the incomplete information case, we model demand uncertainty via a continuous probability distribution. Under mild assumptions, we characterize the supplier's optimal pricing policy as a fixed point of a proper translation of his expectation about the orders that he will receive from the retailers. If this expectation is decreasing in his price, then such an optimal policy always exists and is unique. Based on this characterization, we are able to proceed with comparative statics and sensitivity analysis, both analytically and numerically. Incomplete information gives rise to market inefficiencies because the supplier may ask for a too high price. Increasing supplier's cost results in increasing wholesale prices, decreasing orders from the retailers and hence decreasing consumer surplus. Increasing retailers' production capacities results in decreasing wholesale prices and increasing consumer surplus. Finally, as the number of second-stage retailers increases, the supplier's profit may initially rise but eventually drops.
Open Source Laboratory Sample Rotator Mixer and Shaker
Creators: name: Pearce, Joshua
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: lab mixer
subject: lab rotator
subject: lab shaker
subject: libre hardware
subject: open hardware
subject: open source hardware
subject: sample mixer
subject: sample shaker

description: Open Source Laboratory Sample Rotator Mixer and Shaker Karankumar C. Dhankani and Joshua M. Pearce An open-source 3-D printable laboratory sample rotator mixer is developed here in two variants, which allow users to opt for the level of functionality, cost saving and associated complexity needed in their laboratories. First, a laboratory sample rotator is designed and demonstrated that can be used for tumbling as well as gentle mixing of samples in a variety of tube sizes by mixing them horizontally, vertically, or any position in between. Changing the mixing angle is easy and requires no tools. This device is battery powered and can be easily transported to operate in various locations in a lab including desktop, bench, clean hood, chemical hood, cold room, glove box, incubator or biological hood. Second, an on-board Arduino microcontroller powered via USB is incorporated that adds the functionality of a laboratory sample shaker mixer. These devices can be customized both mechanically and functionally as the user can simply select the operation mode on the switch or alter the code to perform custom experiments. The open source laboratory sample rotator mixer can be built by non-specialists for under US$30 and adding shaking functionality can be done for under $20 more. Thus these open source devices are technically superior to proprietary commercial equipment and can save over 90% of the costs.
Chick lit: the new face of postfeminist fiction?
Creators: name: Glasburgh, Michele M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006
Subjects: Postfeminism
Fiction--Evaluation
Women in literature--Evaluation
Feminism
Content analysis
Women's Literature--Evaluation

description: This study is a content analysis of ten chick lit books, a genre of women's fiction. Books were analyzed for five postfeminist characteristics as defined by Susan Faludi's backlash theory, outlined in Backlash: The Undeclared War Against Women and in further research on popular culture's notions of womanhood: 1) negative reaction to second wave feminism, 2) focus on the individual instead of a collective sisterhood, 3) desire for more traditional femininity through domesticity, consumerism, romance, and motherhood, 4) female identity crisis causing fears of a man shortage, a loudly ticking biological clock, and career burnout, and 5) feelings of anxiety over ability to make the correct future decisions. Analysis has found that chick lit does generally reinforce the notions of postfeminism/backlash, however the characters displayed anxiety over how to incorporate feminine paths into their lives and generally disregard motherhood.
The F pilus serves as a conduit for the DNA during conjugation between physically distant bacteria
Creators: name: lesterlin, christian
name: goldlust, kelly
name: Ducret, Adrien
name: Halte, Manuel
name: Berne-Dedieu, Annick
name: Erhardt, Marc
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310701
subject: Bacteriology

description: This study provides the first direct evidence of DNA transfer through the extended pilus, resolving a 60-year-old debate. It reshapes the prevailing model for F-like plasmids conjugation and significantly advances our understanding of the dissemination of drug resistance and virulence in bacterial communities.AbstractHorizontal transfer of F-like plasmids by bacterial conjugation is responsible for disseminating antibiotic resistance and virulence determinants among pathogenic Enterobacteriaceae species, a growing health concern worldwide. Central to this process is the conjugative F pilus, a long extracellular filamentous polymer that extends from the surface of plasmid donor cells, allowing it to probe the environment and make contact with the recipient cell. It is well established that the F pilus can retract to bring mating pair cells in tight contact before DNA transfer. However, whether DNA transfer can occur through the extended pilus has been a subject of active debate. In this study, we use live-cell microscopy to show that, while most transfer events occur between cells in direct contact, the F pilus can indeed serve as a conduit for the DNA during transfer between physically distant cells. Our findings enable us to propose a new model for conjugation that revises our understanding of the DNA transfer mechanism and the dissemination of drug resistance and virulence genes within complex bacterial communities.
Fast relaxation of photo-excited carriers in 2D transition metal dichalcogenides
Creators: name: Danovich, Mark
name: Aleiner, Igor
name: Drummond, Neil D.
name: Fal'ko, Vladimir
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We predict a fast relaxation of photo-excited carriers in monolayer transition metal dichalcogenides (TMDCs), which is mediated by the emission of longitudinal optical (LO) phonons. By evaluating Born effective charges for ${\rm MoS_2, MoSe_2,WS_2}$, and ${\rm WSe_2}$, we find that, due to the polar coupling of electrons with LO phonons, the relaxation times for hot electrons and holes are of the order of a few ps.
description: 4 pages, 3 figures
D3.2 GRAPEVINE Plagues and Diseases Models v2
Creators: name: Moshou, Dimitrios
name: Paraskevas, Charalampos
name: Kechagias, Konstantinos
name: Pantazi, Xanthoula-Eirini
name: Tamouridou, Afroditi-Alexandra
name: Stavridou, Domna
name: Pliatsidis, Konstantnos
name: Pantazi, Evdoxi-Glykeria
name: Fragos, Vasilios
name: Balduque, Joaquín
name: Vourlioti, Paraskevi
name: Kotsopoulos, Stelios
name: Lacueva-Pérez, Francisco José
Publisher: name: Zenodo
Year: 2023
Subjects: Disease model
Phenology model
Meteorology model
Datasets

description: The main objective of Activity 3 (Models specification and implementation) of GRAPEVINE project is to define and implement several models for the identification of diseases and plagues, and the way to mitigate their effects. These models represent: a physical model about the behaviour and evolution of diseases / plagues, identification of the diseases / plagues in crops, accurate weather forecasting, crops phenology and a deep learning model for disease / plague classification and decision making.
 This deliverable (in the first version v1) has focused on defining the basic models (phenological, disease and meteorological) that will be used in the implementation of the other tasks of Activity 3. These models will be combined in one global model in order to provide predictions through coupled simulations / calculations.
 The deliverable (in the current version v2) is focused on defining the advanced models (phenological, disease and meteorological) that will be combined in one global model in order to provide predictions through coupled simulations / calculations.
description: This document is issued within the frame and for the purpose of the GRAPEVINE project. This project has received funding from the European Union's Innovation and Networks Executive Agency – Connecting Europe Facility (CEF) under Grant AGREEMENT No INEA/CEF/ICT/A2018/1837816; Action No 2018-EU-IA-0091. The opinions expressed and arguments employed herein do not necessarily reflect the official views of the European Commission. This document and its content are the property of the GRAPEVINE Consortium. All rights relevant to this document are determined by the applicable laws. Access to this document does not grant any right or license on the document or its contents. This document or its contents are not to be used or treated in any manner inconsistent with the rights or interests of the GRAPEVINE Consortium or the Partners detriment and are not to be disclosed externally without prior written consent from the GRAPEVINE Partners. Each GRAPEVINE Partner may use this document in conformity with the GRAPEVINE Consortium Grant Agreement provisions.
ASQLAG - Automated SQL Assignment Grading System for Multiple DBMSs
Creators: name: Areerat Trongratsameethong
Publisher: name: Text and Journal Publication
Year: 2018
Subjects: Automated SQL Grader, Assignment Management Database, SQLines, Object-Oriented Design, Model-View-Controller.

description: Journal of Technology and Innovation in Tertiary Education Siam technology College, vol.1, no.1, no.42-62
Stochastic Loewner Evolution Relates Anomalous Diffusion and Anisotropic Percolation
Creators: name: Credidio, H. F.
name: Moreira, A. A.
name: Herrmann, H. J.
name: Andrade, J. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We disclose the origin of anisotropic percolation perimeters in terms of the Stochastic Loewner Evolution (SLE) process. Precisely, our results from extensive numerical simulations indicate that the perimeters of multi-layered and directed percolation clusters at criticality are the scaling limits of the Loewner evolution of an anomalous Brownian motion, being subdiffusive and superdiffusive, respectively. The connection between anomalous diffusion and fractal anisotropy is further tested by using long-range power-law correlated time series (fractional Brownian motion) as driving functions in the evolution process. The fact that the resulting traces are distinctively anisotropic corroborates our hypothesis. Under the conceptual framework of SLE, our study therefore reveals new perspectives for mathematical and physical interpretations of non-Markovian processes in terms of anisotropic paths at criticality and vice-versa.
description: 5 pages, 4 figures
Design For Change: Ontology-Driven Knowledgebase Applications For Dynamic Biological Domains
Creators: name: Parmelee, Mary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002
Subjects: Ontology
Knowledge representation
Information storage and retrieval--Design
Information systems--Design
Application software--Development

description: Post-genomic biology is producing a plethora of rapidly changing complex data. Yet extracting useful information from this data is limited by current knowledge management methodologies. Biological knowledge management is complicated by ambiguous nomenclature, cultural differences between biologists and computer scientists, and conventional database technology that was not designed to support rapidly changing complex domains. A recent trend in ontology-driven database design has emerged to address this challenge. While ontologies provide effective knowledge models, attempts to transform ontologies into knowledgebases have revealed an impedance mismatch or ontology transformation gap. A unique methodology called Ultra-Structure Theory (UT) may provide an ontology transform solution that supports large scale, dynamic biological domains by expressing the complexity in data rather than programming code. This thesis aims to survey ontology and database theory and methodologies, and describe how UT integrates and extends them to provide a flexible, semantically expressive knowledgebase solution using standard relational database technology.
Science with the Cherenkov Telescope Array
Creators: name: Acharya, B. S.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017

description: The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA is extremely broad: from understanding the role of relativistic cosmic particles to the search for dark matter. CTA is an explorer of the extreme universe, probing environments from the immediate neighbourhood of black holes to cosmic voids on the largest scales. Covering a huge range in photon energy from 20 GeV to 300 TeV, CTA will improve on all aspects of performance with respect to current instruments.The observatory will operate arrays on sites in both hemispheres to provide full sky coverage and will hence maximize the potential for the rarest phenomena such as very nearby supernovae, gamma-ray bursts or gravitational wave transients. With 99 telescopes on the southern site and 19 telescopes on the northern site, flexible operation will be possible, with sub-arrays available for specific tasks. CTA will have important synergies with many of the new generation of major astronomical and astroparticle observatories. Multi-wavelength and multi-messenger approaches combining CTA data with those from other instruments will lead to a deeper understanding of the broad-band non-thermal properties of target sources.The CTA Observatory will be operated as an open, proposal-driven observatory, with all data available on a public archive after a pre-defined proprietary period. Scientists from institutions worldwide have combined together to form the CTA Consortium. This Consortium has prepared a proposal for a Core Programme of highly motivated observations. The programme, encompassing approximately 40% of the available observing time over the first ten years of CTA operation, is made up of individual Key Science Projects (KSPs), which are presented in this document.
A Discriminative Representation of Convolutional Features for Indoor Scene Recognition
Creators: name: Khan, Salman H.
name: Hayat, Munawar
name: Bennamoun, Mohammed
name: Togneri, Roberto
name: Sohel, Ferdous
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Indoor scene recognition is a multi-faceted and challenging problem due to the diverse intra-class variations and the confusing inter-class similarities. This paper presents a novel approach which exploits rich mid-level convolutional features to categorize indoor scenes. Traditionally used convolutional features preserve the global spatial structure, which is a desirable property for general object recognition. However, we argue that this structuredness is not much helpful when we have large variations in scene layouts, e.g., in indoor scenes. We propose to transform the structured convolutional activations to another highly discriminative feature space. The representation in the transformed space not only incorporates the discriminative aspects of the target dataset, but it also encodes the features in terms of the general object categories that are present in indoor scenes. To this end, we introduce a new large-scale dataset of 1300 object categories which are commonly present in indoor scenes. Our proposed approach achieves a significant performance boost over previous state of the art approaches on five major scene classification datasets.
Measurement of the cross section for isolated-photon plus jet production in $pp$ collisions at $\sqrt s=13$ TeV using the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017

description: The dynamics of isolated-photon production in association with a jet in proton-proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb$^{-1}$. Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti-$k_t$ algorithm with radius parameter $R=0.4$ and required to have transverse momenta above 100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the leading-photon transverse energy, the leading-jet transverse momentum, the azimuthal angular separation between the photon and the jet, the photon-jet invariant mass and the scattering angle in the photon-jet centre-of-mass system. Tree-level plus parton-shower predictions from SHERPA and PYTHIA as well as next-to-leading-order QCD predictions from JETPHOX and SHERPA are compared to the measurements.
Military Periodicals in the Andre' Savine Collection: A Bibliographic Description
Creators: name: Harsanyi, Nicolae
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: Exiles' Writings Russian 20th Century
Exiles' Writings Russian
Russian Periodicals Foreign Countries
Russian Periodicals France Paris History 20th Century

description: The goal of this paper is to create a bibliographic description of the military periodicals located in the André Savine Collection of the UNC-CH's Academic Affairs Library. The Savine Collection is a recent acquisition, purchased directly from Savine's family, and any kind of bibliographic data concerning the items it contains either have not been established or are to be found in other sources. Therefore this paper is a first attempt to establish a bibliographic description of a sizable section of the collection. The military periodicals treated herein were published in the twentieth century outside of the Soviet Union by various organizations of former Russian White Army cadres living in exile. The methodology employed to this purpose involved searching and obtaining data from a variety of relevant bibliographic sources (several American and Russian catalogs) and then confronting them with the original items in the Savine Collection.
Supplementary Table for: The Degree of Pre-Pregnancy Vitamin D Deficiency is not Associated with Gestational Diabetes in Women Undergoing ART
Creators: name: Liu, Yvonne
name: Hocher, Johann-Georg
name: Chen, Huijun
name: Hu, Liang
name: Zhang, Xiaoli
name: Cai, Sufen
name: Tang, Sha
name: Gong, Fei
name: Krämer, B. K.
name: Hocher, Berthold
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320208
subject: Endocrinology

description: Supplementary Table S1: Overview of studies in normal pregnancies on vitamin D and GDM in a Chinese/Taiwanese population in the last 10 years
MS Gr. class. c. 4 839
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. 2. Philodemus, De morte 4
Drawing by Carlo Orazi
Content Analysis of Digital Oral History Collections in Africa, Australia, Europe, and North America
Creators: name: Ramirez, Maria
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016
Subjects: Digital collections
Content analysis
Oral history

description: Over the past sixty-eight years, oral history interviews have emerged as valuable primary sources of research by capturing nuanced perspectives of the past. Proponents argue that the enduring value of these resources stems from their ability to fill the gap in archives by giving voice to those who have been historically marginalized in society. For much of the twentieth century these voices remained silent, as archivists struggled to provide access to these unique acquisitions. The digital revolution has ignited new hopes that technology can resolve the problems of access to oral history collections. This paper aims to shed light on how oral histories have been presented in the digital interfaces of several collections from Africa, Australia, Europe, and North America. By examining the content that is available to users worldwide, a clearer image of the priorities and standards used in this new era of oral histories will be revealed.
A toy quantum analog of enzymes
Creators: name: Svetlichny, George
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Biomolecules (q-bio.BM)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We present a quantum system incorporating qualitative aspects of enzyme action in which the possibility of quantum superposition of several conformations of the enzyme-substrate complex is investigated. We present numerical results showing quantum effects that transcend the case of a statistical mixture of conformations.
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017

description: A search for the associated production of the Higgs boson with a top quark pair ($t\bar t H$) is reported. The search is performed in multilepton final states using a dataset corresponding to an integrated luminosity of 36.1 fb$^{-1}$ of proton--proton collision data recorded by the ATLAS experiment at a center-of-mass energy $\sqrt{s} = 13$ TeV at the Large Hadron Collider. Higgs boson decays to $WW^*$, $\tau\tau$, and $ZZ^*$ are targeted. Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeV and a pair of top quarks. An excess of events over the expected background from Standard Model processes is found with an observed significance of 4.1 standard deviations, compared to an expectation of 2.8 standard deviations. The best fit for the $t\bar t H$ production cross section is $\sigma(t\bar t H) = 790^{+230}_{-210}$ fb, in agreement with the Standard Model prediction of $507^{+35}_{-50}$ fb. The combination of this result with other $t\bar t H$ searches from the ATLAS experiment using the Higgs boson decay modes to $b\bar b$, $\gamma\gamma$ and $ZZ^* \to 4\ell$, has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the $t\bar t H$ production mode.