cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On multi-scale percolation behaviour of the effective conductivity for the lattice model with interacting particles
Creators: name: Wiśniowski, R.
name: Olchawa, W.
name: Frączek, D.
name: Piasecki, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recently, the effective medium approach using 2x2 basic cluster of model lattice sites to predict the conductivity of interacting droplets has been presented by Hattori et al. To make a step aside from pure applications, we have studied earlier a multi-scale percolation, employing any kxk basic cluster for non-interacting particles. Here, with interactions included, we examine in what way they alter the percolation threshold for any cluster case. We found that at a fixed length scale k the interaction reduces the range of shifts of the percolation threshold. To determine the critical concentrations, the simplified model is used. It diminishes the number of local conductivities into two main ones. In the presence of a dominance of the repulsive interaction over the thermal energy, the exact percolation thresholds at scales k=2 and 3 can be obtained from analytical formulas. Furthermore, by a simple reasoning, we obtain the limiting threshold formula for odd k. When k>>1, the odd-even difference becomes negligible. Hence, the 0.75 is the highest possible value of the threshold.
description: 13 pages with 6 figures
EM Algorithms for Weighted-Data Clustering with Application to Audio-Visual Scene Analysis
Creators: name: Gebru, Israel D.
name: Alameda-Pineda, Xavier
name: Forbes, Florence
name: Horaud, Radu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Data clustering has received a lot of attention and numerous methods, algorithms and software packages are available. Among these techniques, parametric finite-mixture models play a central role due to their interesting mathematical properties and to the existence of maximum-likelihood estimators based on expectation-maximization (EM). In this paper we propose a new mixture model that associates a weight with each observed point. We introduce the weighted-data Gaussian mixture and we derive two EM algorithms. The first one considers a fixed weight for each observation. The second one treats each weight as a random variable following a gamma distribution. We propose a model selection method based on a minimum message length criterion, provide a weight initialization strategy, and validate the proposed algorithms by comparing them with several state of the art parametric and non-parametric clustering techniques. We also demonstrate the effectiveness and robustness of the proposed clustering technique in the presence of heterogeneous data, namely audio-visual scene analysis.
description: 14 pages, 4 figures, 4 tables
MS Gr. class. c. 4 783
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 fr. 20 fr. 21 fr. 24. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
The Seeking Behaviors of First and Second Year Undergraduate Students When Searching Online for Consumer Health Information
Creators: name: Good, Larisa V.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: Health--Information services
Internet searching
Information needs--Evaluation

description: More and more, consumers turn to the Internet to answer information needs. However, since misinformation is prevalent on the Web, there is concern that consumers are relying on health information that lack quality. What becomes apparent is the need to identify and evaluate the sources people find useful when searching online for health information. Fifteen first and second year undergraduates looked at two health-related scenarios then searched the Internet for answers to questions posed. Results indicate a wide difference between the number of websites viewed by first and second years, suggesting a difference in information literacy skills or trust in the information found. Also, a weak but significant, positive correlation between usefulness and authority in one scenario, but not the other, reaffirms the need to flag quality health information on the web, especially for information generating media attention.
Description of nuclear systems with a self-consistent configuration-mixing approach. I: Theory, algorithm, and application to the $^{12}$C test nucleus
Creators: name: Robin, C.
name: Pillet, N.
name: Arteaga, D. Peña
name: Berger, J. -F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Although self-consistent multi-configuration methods have been used for decades to address the description of atomic and molecular many-body systems, only a few trials have been made in the context of nuclear structure. This work aims at the development of such an approach to describe in a unified way various types of correlations in nuclei, in a self-consistent manner where the mean-field is improved as correlations are introduced. The goal is to reconcile the usually set apart Shell-Model and Self-Consistent Mean-Field methods. This approach is referred as "variational multiparticle-multihole configuration mixing method". It is based on a double variational principle which yields a set of two coupled equations that determine at the same time the expansion coefficients of the many-body wave function and the single particle states. The formalism is derived and discussed in a general context, starting from a three-body Hamiltonian. Links to existing many-body techniques such as the formalism of Green's functions are established. First applications are done using the two-body D1S Gogny effective force. The numerical procedure is tested on the $^{12}$C nucleus in order to study the convergence features of the algorithm in different contexts. Ground state properties as well as single-particle quantities are analyzed, and the description of the first $2^+$ state is examined. This study allows to validate our numerical algorithm and leads to encouraging results. In order to test the method further, we will realize in the second article of this series, a systematic description of more nuclei and observables obtained by applying the newly-developed numerical procedure with the same Gogny force. As raised in the present work, applications of the variational multiparticle-multihole configuration mixing method will however ultimately require the use of an extended and more constrained Gogny force.
description: 22 pages, 18 figures, accepted for publication in Phys. Rev. C. v2: minor corrections and references added
Connecting Undergraduates with Primary Sources: A Study of Undergraduate Instruction in Archives, Manuscripts, and Special Collections
Creators: name: Allison, Anna Elise
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: Surveys special collections
Archives--Reference services
Surveys bibliographic instruction
Bibliographic instruction--College and university students

description: This study presents the results of a mail survey of archives, manuscripts, and special collections departments in United States universities with membership in the Association of Research Libraries. The survey examined the nature and extent of instruction that these departments provide for undergraduate classes. It also addressed other instructional services accessible to undergraduates and the impact of undergraduate use on these departments and their collections.  The survey produced eighty-five usable responses. The majority of participants reported that their department provides classroom instruction for undergraduates. Their responses show that undergraduate instruction sessions are usually conducted for small classes, are often related to a specific course assignment, and generally address the nature of primary sources and department procedures for using original materials. While many departments find their space and staff stretched by increasing undergraduate use, most respondents felt that the challenges and benefits of serving undergraduates are worthwhile.
On the accretion process in a high-mass star forming region - A multitransitional THz Herschel-HIFI study of ammonia toward G34.26+0.15
Creators: name: Hajigholi, M.
name: Persson, C. M.
name: Wirström, E. S.
name: Black, J. H.
name: Bergman, P.
name: Olofsson, A. O. H.
name: Olberg, M.
name: Wyrowski, F.
name: Coutens, A.
name: Hjalmarson, Å.
name: Menten, K. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: [Abridged] Our aim is to explore the gas dynamics and the accretion process in the early phase of high-mass star formation. The inward motion of molecular gas in the massive star forming region G34.26+0.15 is investigated by using high-resolution profiles of seven transitions of ammonia at THz frequencies observed with Herschel-HIFI. The shapes and intensities of these lines are interpreted in terms of radiative transfer models of a spherical, collapsing molecular envelope. An accelerated Lambda Iteration (ALI) method is used to compute the models. The seven ammonia lines show mixed absorption and emission with inverse P-Cygni-type profiles that suggest infall onto the central source. A trend toward absorption at increasingly higher velocities for higher excitation transitions is clearly seen in the line profiles. The $J = 3\leftarrow2$ lines show only very weak emission, so these absorption profiles can be used directly to analyze the inward motion of the gas. This is the first time a multitransitional study of spectrally resolved rotational ammonia lines has been used for this purpose. Broad emission is, in addition, mixed with the absorption in the $1_0-0_0$ ortho-NH$_3$ line, possibly tracing a molecular outflow from the star forming region. The best-fitting ALI model reproduces the continuum fluxes and line profiles, but slightly underpredicts the emission and absorption depth in the ground-state ortho line $1_0-0_0$. The derived ortho-to-para ratio is approximately 0.5 throughout the infalling cloud core similar to recent findings for translucent clouds in sight lines toward W31C and W49N. We find evidence of two gas components moving inwards toward the central region with constant velocities: 2.7 and 5.3 km$\,$s$^{-1}$, relative to the source systemic velocity. The inferred mass accretion rates derived are sufficient to overcome the expected radiation pressure from G34.26+0.15.
description: 20 pages, 18 figures, accepted by A&A 3 October 2015
Insecticide Use on Cotton in 1979
Creators: name: McDowell, Robert
name: Marsh, Cleveland
name: Osteen, Craig
name: McDowell, Robert
name: Marsh, Cleveland
name: Osteen, Craig
Publisher: name: Unknown
Year: 1982
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Production Economics
subject: Productivity Analysis
subject: cotton
subject: pesticide use
subject: acres treated
subject: acre-treatments
subject: insecticides
subject: miticides
subject: single material applications
subject: tank-mix applications
subject: application rates
subject: United States
subject: Southeast
subject: Delta
subject: Southern Plains
subject: Far West

description: In 1979, farmers reported they applied 22 million pounds (active ingredient) of insecticides in 30 million acre- treatments on 6.5 million acres of cotton. This consisted of 9.2 million pounds (a.i.) in 19.8 million acre-treatments of single material applications and 12.8 million pounds (a.i.) in 10.2 million acre-treatments of tank mixes. In 1979, an average of 4.6 insecticide applications were made per treated acre with 3.4 pounds of active ingredient being applied. Of the 30 million acre-treatments, 4.6 million were in the Southeast, 10.6 million in the Delta, 8.4 million in the Southern Plains, and 6.3 million in the Far West. The primary insecticides used were methyl parathion, chlordimeform, permethrin, EPN, and fenvalerate. The percentage of planted acres treated, the number of times insecticides were applied, and the total amount of insecticides applied to cotton in 1979 showed a decline from previous years.
Digital Insects: Assessing Online Presentations of Entomological Collections for Research, Education, and Outreach
Creators: name: Hammond, Babi A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012
Subjects: North Carolina State University--Insect Museum
Surveys--Internet resources
Entomology--Catalogs and collections--digitization

description: This thesis reports the results of a survey of entomologists assessing the utility of  different ways to present entomological collections online. Respondents viewed  real-world examples of three different digitization techniques - detailed images  of individual specimens, a database of label information, and detailed images of  entire drawers of specimens - and rated the usefulness of each for a variety of  purposes. The survey also collected information on respondents' use of print  and online resources, the online resources they use most frequently, and the  features and resources most wanted in online resources. Respondents rated  drawer images least useful for entomological research, but still useful, and nearly  as useful, or more useful, than the other two methods for informing loan  requests, education, and outreach. Drawer images also appeared useful for  specimen identification. Although significant issues remain, relatively quick and  inexpensive digitization methods such as drawer images can be useful for  entomological collections.
Nitride Multilayers as a Platform for Parallel Two-Dimensional Electron-Hole Gases: MgO/ScN(111)
Creators: name: Botana, Antia S.
name: Pardo, Victor
name: Pickett, Warren E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: At interfaces between insulating oxides LaAlO$_3$ and SrTiO$_3$, a two dimensional electron gas (2DEG) has been observed and well studied, while the predicted hole gas (2DHG) has not been realized due to the strong tendency of holes in oxygen $2p$ orbitals to localize. Here we propose, via ab initio calculations, an unexplored class of materials for the realization of parallel two dimensional (2D), two carrier (electron+hole) gases: nitride-oxide heterostructures, with (111)-oriented ScN and MgO as the specific example. Beyond a critical thickness of five ScN layers, this interface hosts spatially separated conducting Sc-$3d$ electrons and N-$2p$ holes, each confined to $\sim$two atomic layers -- the transition metal nitride provides both gases. A guiding concept is that the N$^{3-}$ anion should promote robust two carrier 2D hole conduction compared to that of O$^{2-}$; metal mononitrides are mostly metallic and even superconducting while most metal monoxides are insulating. A second positive factor is that the density of transition metal ions, hence of a resulting 2DG, is about three times larger for a rocksalt (111) interface than for a perovskite(001) interface. Our results, including calculation of Hall coefficient and thermopower for each conducting layer separately, provide guidance for new exploration, both experimental and theoretical, on nitride-based conducting gases that should promote study of long sought exotic states viz. new excitonic phases and distinct, nanoscale parallel superconducting nanolayers.
description: 6 pages, 4 figures
Real discrete spectrum of complex PT-symmetric scattering potentials
Creators: name: Ahmed, Zafar
name: Nathan, Joseph Amal
name: Sharma, Dhruv
name: Ghosh, Dona
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate the parametric evolution of the real discrete spectrum of several complex PT symmetric scattering potentials of the type $V(x)=-V_1 F_e(x) + i V_2 F_o(x), V_1>0, F_e(x)>0$ by varying $V_2$ slowly. Here $e,o$ stand for even and odd parity and $F_{e,o}(\pm \infty)=0$. Unlike the case of Scarf II potential, we find a general absence of the recently explored accidental (real to real) crossings of eigenvalues in these scattering potentials. On the other hand, we find a general presence of coalescing of real pairs of eigenvalues to the complex conjugate pairs at a finite number of exceptional points. We attribute such coalescings of eigenvalues to the presence of a finite barrier (on the either side of $x=0$ ) which has been linked to a recent study of stokes phenomenon in the complex PT-symmetric potentials.
description: 13 pages and 6 Figures
MS Gr. class. c. 4 784
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 fr. 95 fr. 96 fr. 97. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
Multiculturalism in Children's Literature: A Content Analysis of Novels on the Battle of the Books Lists for Elementary Schools in the Chapel Hill - Carrboro City School District
Creators: name: Aiken, Diane E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011
Subjects: Children's literature
Children's literature--Evaluation

description: The inclusion of multiculturalism in literature is a growing movement that  educators are recognizing and promoting in schools across the United States. As a  nation of diverse people, beliefs, interests and cultures, it is important to the social  and academic health of our students that we support them through every means  possible. Multicultural literature is a resource that can help students navigate any  kind of diversity they may find in their schools and/or community. In this study, a  content analysis of a Battle of the Books list is conducted in the hopes of outlining,  categorizing and supporting the inclusion of multicultural elements in school  reading programs.
Classification of Complex Wishart Matrices with a Diffusion-Reaction System guided by Stochastic Distances
Creators: name: Gomez, Luis
name: Alvarez, Luis
name: Mazorra, Luis
name: Frery, Alejandro C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose a new method for PolSAR (Polarimetric Synthetic Aperture Radar) imagery classification based on stochastic distances in the space of random matrices obeying complex Wishart distributions. Given a collection of prototypes $\{Z_m\}_{m=1}^M$ and a stochastic distance $d(.,.)$, we classify any random matrix $X$ using two criteria in an iterative setup. Firstly, we associate $X$ to the class which minimizes the weighted stochastic distance $w_md(X,Z_m)$, where the positive weights $w_m$ are computed to maximize the class discrimination power. Secondly, we improve the result by embedding the classification problem into a diffusion-reaction partial differential system where the diffusion term smooths the patches within the image, and the reaction term tends to move the pixel values towards the closest class prototype. In particular, the method inherits the benefits of speckle reduction by diffusion-like methods. Results on synthetic and real PolSAR data show the performance of the method.
description: Accepted for publication in Philosophical Transactions A
MS Gr. class. c. 4 785
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 col. 2. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
Spanners for Directed Transmission Graphs
Creators: name: Kaplan, Haim
name: Mulzer, Wolfgang
name: Roditty, Liam
name: Seiferth, Paul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences
subject: F.2.2

description: Let $P \subset \mathbb{R}^2$ be a planar $n$-point set such that each point $p \in P$ has an associated radius $r_p > 0$. The transmission graph $G$ for $P$ is the directed graph with vertex set $P$ such that for any $p, q \in P$, there is an edge from $p$ to $q$ if and only if $d(p, q) \leq r_p$. Let $t > 1$ be a constant. A $t$-spanner for $G$ is a subgraph $H \subseteq G$ with vertex set $P$ so that for any two vertices $p,q \in P$, we have $d_H(p, q) \leq t d_G(p, q)$, where $d_H$ and $d_G$ denote the shortest path distance in $H$ and $G$, respectively (with Euclidean edge lengths). We show how to compute a $t$-spanner for $G$ with $O(n)$ edges in $O(n (\log n + \log Ψ))$ time, where $Ψ$ is the ratio of the largest and smallest radius of a point in $P$. Using more advanced data structures, we obtain a construction that runs in $O(n \log^5 n)$ time, independent of $Ψ$. We give two applications for our spanners. First, we show how to use our spanner to find a BFS tree in $G$ from any given start vertex in $O(n \log n)$ time (in addition to the time it takes to build the spanner). Second, we show how to use our spanner to extend a reachability oracle to answer geometric reachability queries. In a geometric reachability query we ask whether a vertex $p$ in $G$ can "reach" a target $q$ which is an arbitrary point in the plane (rather than restricted to be another vertex $q$ of $G$ in a standard reachability query). Our spanner allows the reachability oracle to answer geometric reachability queries with an additive overhead of $O(\log n\log Ψ)$ to the query time and $O(n \log Ψ)$ to the space.
description: 28 pages, 9 figures. A preliminary version appeared in SoCG 2015
An Exploratory Study of Using NoSQL Databases to Store Weather Data
Creators: name: Miller, David P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012
Subjects: Information storage & retrieval systems
Databases

description: Current weather observations are not sufficient spatially or temporally to resolve all weather phenomena, but a large increase in the data intake would cause new problems with storage. NoSQL databases are potential solutions that offer fast queries and the ability to scale to incredibly large sizes. This study examines some of the unique characteristics of weather data and if they can be leveraged in a NoSQL environment. Data models were designed and tested for two NoSQL databases, Cassandra and Hbase, to see if they can meet all of the necessary query functionality and a few basic speed tests were run to gauge baseline query speeds.
MS Gr. class. c. 4 786
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 col. 1. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
Joint Energy Minimization and Resource Allocation in C-RAN with Mobile Cloud
Creators: name: Wang, Kezhi
name: Yang, Kun
name: Magurawalage, Chathura Sarathchandra
Publisher: name: arXiv
Year: 2015
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Cloud radio access network (C-RAN) has emerged as a potential candidate of the next generation access network technology to address the increasing mobile traffic, while mobile cloud computing (MCC) offers a prospective solution to the resource-limited mobile user in executing computation intensive tasks. Taking full advantages of above two cloud-based techniques, C-RAN with MCC are presented in this paper to enhance both performance and energy efficiencies. In particular, this paper studies the joint energy minimization and resource allocation in C-RAN with MCC under the time constraints of the given tasks. We first review the energy and time model of the computation and communication. Then, we formulate the joint energy minimization into a non-convex optimization with the constraints of task executing time, transmitting power, computation capacity and fronthaul data rates. This non-convex optimization is then reformulated into an equivalent convex problem based on weighted minimum mean square error (WMMSE). The iterative algorithm is finally given to deal with the joint resource allocation in C-RAN with mobile cloud. Simulation results confirm that the proposed energy minimization and resource allocation solution can improve the system performance and save energy.
description: Accepted by IEEE Transactions on Cloud Computing on 23 Jan, 2016
Electromagnetic stress at the boundary: photon pressure or tension?
Creators: name: Wang, Shubo
name: Ng, Jack
name: Xiao, Meng
name: Chan, C. T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is well known that incident photons carrying momentum hk exert a positive photon pressure. But if light is impinging from a negative refractive medium in which hk is directed towards the source of radiation, should light insert a photon "tension" instead of a photon pressure? Using an ab initio method that takes the underlying microstructure of a material into account, we find that when an electromagnetic wave propagates from one material into another, the electromagnetic stress at the boundary is in fact indeterminate if only the macroscopic parameters are specified. Light can either pull or push the boundary, depending not only on the macroscopic parameters but also on the microscopic lattice structure of the polarizable units that constitute the medium. Within the context of effective medium approach, the lattice effect is attributed to electrostriction and magnetostriction which can be accounted for by the Helmholtz stress tensor if we employ the macroscopic fields to calculate the boundary optical stress.
description: 32 pages, 8 figures
Comparing Physician and Nurse Site Search Behavior within the North Carolina AHEC Digital Library
Creators: name: Sorrell, Melanie S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012
Subjects: Medical informatics
Information-seeking behavior
Content analysis
Digital libraries

description: The North Carolina AHEC Digital Library (ADL) is an electronic network of resources for in-state health care providers to easily access select medical and pharmaceutical information. A quick retrieval of subscription-specific content is available through a site search tool on the ADL website. A cursory review of transaction logs for website searching revealed a large number of failed patron search attempts, which prompted a study to learn how the site search tool is being used and what the ADL can do to improve search effectiveness. A comparison between physician and nurse search behavior from 2010 will be performed to see which factors yield successful and unsuccessful results, the average number of queries per subject session, and which resource links are used by patrons. The study outcome will guide menu changes to the ADL website to improve the site search experience for patrons.
Probing mixed-spin pairing in heavy nuclei
Creators: name: Bulthuis, Brendan
name: Gezerlis, Alexandros
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The nature of the nuclear pairing condensate is an active topic of investigation, especially as regards its neutron-proton versus identical-particle character, which manifests as the difference between spin-singlet and spin-triplet pairing. In this work, we probe the recently proposed mixed-spin pairing condensates, using a phenomenological Hamiltonian and Hartree-Fock-Bogoliubov theory along with the gradient method. In addition to improving the solution of the many-body problem, we have calculated a series of physical quantities and examined the robustness of the mixed-spin pairing state as the input Hamiltonian is modified. Overall, we find that even though the mixed-spin correlation energy is suppressed in comparison to earlier work, the new pairing behavior persists. We also discuss the possibility of directly probing the mixed-spin pairing phase.
description: 10 pages, 7 figures, 2 tables; v2 corresponds to the published version
When visual and verbal memories compete: Evidence of cross-domain limits in working memory
Creators: name: Morey, Candice
Publisher: name: Open Science Framework
Year: 2022

description: Data and documentation for Morey and Cowan's 2004 paper. See .R file for guide to data contents. Please reference our published paper when referring to these materials. Reference: Morey, C. C., & Cowan, N. (2004). When visual and verbal memories compete: Evidence of cross-domain limits in working memory. Psychonomic Bulletin & Review, 11(2), 296–301.
Large non-factorizable contributions in $B \to a_0 a_0$ decays
Creators: name: Dou, Defa
name: Liu, Xin
name: Li, Jing-Wu
name: Xiao, Zhen-Jun
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate three tree-dominated $B \to a_0 a_0$ decays for the first time in the perturbative QCD(pQCD) approach at leading order in the standard model, with $a_0$ standing for the light scalar $a_0(980)$ state, which is assumed as a meson based on the model of conventional two-quark$(q\bar q)$ structure. All the topologies of the Feynman diagrams such as the non-factorizable spectator ones and the annihilation ones are calculated in the pQCD approach. It is of great interest to find that, contrary to the known $B \to ππ$ decays, the $B \to a_0 a_0$ decays are governed by the large non-factorizable contributions, which give rise to the large $B \to a_0 a_0$ decay rates in the order of $10^{-6} \sim 10^{-5}$, although the $a_0$ meson has an extremely small vector decay constant $f_{a_0}$. Also observed are large direct CP-violating asymmetries around $15\%$ and $30\%$ for the $B^0 \to a_0^0 a_0^0$ and $a_0^+ a_0^-$ modes. These sizable predictions could be easily examined at the running Large Hadron Collider and the near future Super-B/Belle-II experiments. The future precision measurements combined with these pQCD predictions might be helpful to explore the complicated QCD dynamics and the inner structure of the light scalar $a_0$, as well as to complementarily constrain the unitary angle $α$.
description: 17 pages, 3 figures, and 2 tables; references added, contents improved, to appear in JPG, matching the published version
Velociraptor-specific materials
Creators: name: Wojtowicz, Rafal
name: Legate, Nicole
name: Mandelski, Zofie
name: Renk, Alexis
name: Chavez, Cynthia
name: Suriano, Jacqueline
name: Kamdar, Sonia
name: tacuri, Jonathan
name: Lindsay, Tasheica
name: Rafajko, Sean
Publisher: name: Open Science Framework
Year: 2022

description: Two groups, each made of four students, each will conduct a replication of this study originally done by Forest and wood (2012). The students will perform the replication study as a part of their Research Methods psychology class, led by Professor Dr. Nicole Legate and Sean Rafajko, graduate student, at the Illinois Institute of Technology (IIT) in Chicago, Illinois.
MS Gr. class. c. 4 787
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 col. 13. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
Testing the Kerr Paradigm with X-ray Observations
Creators: name: Bambi, Cosimo
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Astrophysical black hole candidates are thought to be the Kerr black holes of general relativity, but the actual nature of these objects has still to be confirmed. The continuum-fitting and the iron line methods are currently the only available techniques to probe the spacetime geometry around these bodies and test the Kerr black hole paradigm. The continuum-fitting method is a robust approach, but the shape of the disk's thermal spectrum is in general too simple to measure the spin and to constrain possible deviations from the Kerr solution at the same time. The iron line analysis is potentially a powerful technique, but at the moment we do not have high quality data and a robust astrophysical model.
description: 6 pages, 3 figures. Talk given at the "14th Marcel Grossmann Meeting" (12-18 July 2015, Rome, Italy). To appear in the conference proceedings
Open/closed string duality and relativistic fluids
Creators: name: Niarchos, Vasilis
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an open/closed string duality in general backgrounds extending previous ideas about open string completeness by Ashoke Sen. Our proposal sets up a general version of holography that works in gravity as a tomographic principle. We argue, in particular, that previous expectations of a supergravity/Dirac-Born-Infeld (DBI) correspondence are naturally embedded in this conjecture and can be tested in a well-defined manner. As an example, we consider the correspondence between open string field theories on extremal D-brane setups in flat space in the large-N, large 't Hooft limit, and asymptotically flat solutions in ten-dimensional type II supergravity. We focus on a convenient long-wavelength regime, where specific effects of higher-spin open string modes can be traced explicitly in the dual supergravity computation. For instance, in this regime we show how the full abelian DBI action arises from supergravity as a straightforward reformulation of relativistic hydrodynamics. In the example of a (2+1)-dimensional open string theory this reformulation involves an abelian Hodge duality. We also point out how different deformations of the DBI action, related to higher-derivative corrections and non-abelian effects, can arise in this context as deformations in corresponding relativistic hydrodynamics.
description: 44 pages, 1 figure, harvmac; v2 added references to related older works on open/closed string duality, amended eq. (3.3) and improved the discussion around eq. (3.13)
The spectral decomposition of $|θ|^2$
Creators: name: Nelson, Paul D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11F27, Secondary 11F37, 11F72

description: Let $θ$ be an elementary theta function, such as the classical Jacobi theta function. We establish a spectral decomposition and surprisingly strong asymptotic formulas for $\langle |θ|^2, φ\rangle$ as $φ$ traverses a sequence of Hecke-translates of a nice enough fixed function. The subtlety is that typically $|θ|^2 \notin L^2$. Applications to the subconvexity, quantum variance and $4$-norm problems are indicated.
description: 22 pages; minor changes; to appear in Math. Z
MS Gr. class. c. 4 788
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 col. 14. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
A Quantitative Analysis of Dublin Core Metadata Element Set (DCMES) Usage in Data Providers Registered with the Open Archives Initiative (OAI)
Creators: name: Ward, Jewel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002
Subjects: Electronic data archives--Standards
Dublin Core
Science and Technology--Databases
Metadata
Preprints
Virtual library

description: This research describes an empirical study of how the Dublin Core Metadata Element Set (DCMES) is used by 100 Data Providers (DPs) registered with the Open Archives Initiative (OAI). The research was conducted to determine whether or not the DCMES is used to its full capabilities. Eighty-two of 100 DPs have metadata records available for analysis. DCMES usage varies by type of DP. The average number of Dublin Core elements per record is eight, with an average of 91,785 Dublin Core elements used per DP. Five of the 15 elements of the DCMES are used 71% of the time. The results show the DCMES is not used to its fullest extent within DPs registered with OAI.
Selecting Sources: How Adult Public Library Users Find Leisure Books
Creators: name: Novotny, Rachel S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011
Subjects: Public libraries
Reader guidance
Reading

description: With technological advancements and different approaches to marketing books, such as  on social networking websites and book trailers on television, there are now more sources  for adult library patrons to use for the purpose of finding leisure reading materials. How  people search for information and what sources they use to do so can be a way to tailor  services to a particular population. Readers' advisory in public libraries plays a role in  how readers may come into contact with books. This study examines the different sources  and methods being used currently by surveying adult public library patrons at a Wake  County Public Library in North Carolina featuring active and passive readers' advisory  services.
What Presentation of Search Engine Results Do Health Information Searchers Prefer?
Creators: name: Rodden, Diane
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: A study of a sample of online health information searchers was conducted to see what their preferences are with respect to four different display styles for search engine results on health topics. Screen shots of search result display screens were presented to the participants via a Qualtrics (www.qualtrics.com) online survey. The other display types were Display 1: Google standard display, Display 2: Google enhanced with faceted browsable categories, Display 3: Google enhanced with a word cloud for each search result, and Display 4: Google enhanced with an overview word cloud for collection of search results. For each search task, participants were asked to rate the search engine results displays for quality indicators, using Likert-type item rating scales. At the end, in three concluding questions, the participants were asked to choose the display(s) that were best at meeting three specific criteria, based on overall impressions. The evaluations by the participants suggest that the standard Google search results display and the Google screen enhanced with faceted browsable categories were favored over the other two display types.
MS Gr. class. c. 4 789
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 col. 20. Carneiscus, Philistas 2
Drawing by Gennaro Casanova
Supplementary figure and table from Indirect genetic effects for social network structure in Drosophila melanogaster
Creators: name: Wesley Wice, Eric
name: Barbara Saltz, Julia
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 60801 Animal Behaviour

description: Supplementary Figure 1: network metrics. Visual explanation of the network metrics used. Supplementary Table 1: Sample sizes: Details of sample size by treatment and time.
Agreement Attraction and Impasse Aversion: Reasons for Selecting a Poor Deal over No Deal at All
Creators: name: Kesebir, Selin
name: Mislin, Alexandra
name: TUNCEL, ECE
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: agreement
subject: cooperation
subject: impasse
subject: negotiation

description: We examine the positive value of agreement and the negative value of impasse. In a series of studies people chose to give up real value and sacrifice economic efficiency in order to attain a nominal agreement outcome and avoid an impasse outcome. A personally disadvantageous option was selected significantly more often when it was labeled “Agreement” rather than “Option A”, and a personally advantageous option was avoided significantly more often when it was labelled “Impasse” rather than “Option B ”. We show that the appeal of agreement and the aversion to impasse are both at play, yet the aversion to impasse is the stronger of the two motivations. These findings suggest a reason why some negotiators may strike deals that do not meet their objective interests, and have implications for negotiators.
Creating a domain specific document type definition for XML: thoughts on content markup for the humanities
Creators: name: Moore, Rebecca
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: XML
Coding systems
Special collections--Special subjects--South Asia
XML (Document markup language)

description: This paper focuses on the development of an XML (eXtensible Markup Language)  DTD (Document Type Definition)  for South Asian Studies (SAS.dtd).  The goal was to develop a DTD that could be used to markup content, rather than form.  The assumption was made that this DTD would be used in conjunction with another DTD that focused on form, such as the TEI DTD (Text Encoding Initiative).                                                                     The first part of the paper describes the process involved in writing the DTD.  This portion relies heavily on the use of examples.  The second part of the paper discusses implications of the DTD design; specifically problems of attempting to markup document content.  This part of the paper deals with philosophical issues and questions of responsibility.
Hamonthophagus fallax
Creators: name: Roggero, Angela
name: Dierkens, Michael
name: Barbero, Enrico
name: Palestrini, Claudia
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Hamonthophagus
Hamonthophagus fallax

description: HAMONTHOPHAGUS FALLAX (D’ ORBIGNY, 1913: 471)
(FIGS 2, 7, 8, 10)
Type material: Lectotype here designated: (male) MALAWI: [Nyassa Zomba haut Chire=] Zomba, Shire river upper course, Malawi Lake [MNHN]. Paralectotype: (female) TANZANIA [=Afrique Or Alem]: Dar-es-Salaam [MNHN]. For the morphological account, please refer to the original description.
Geographical distribution (Fig. 14): The species has been described from Malawi and Tanzania, and at present is recorded from Botswana, Burundi, Democratic Republic of Congo, Kenya, Malawi, Namibia, Tanzania and Zambia. The record from Graaf-Reinet (Eastern Cape province, South Africa) is very interesting, but needs to be confirmed by further records. A detailed list of the localities is given in the Appendix 3 (Supporting Information).
description: Published as part of Roggero, Angela, Dierkens, Michael, Barbero, Enrico & Palestrini, Claudia, 2017, Combined phylogenetic analysis of two new Afrotropical genera of Onthophagini (Coleoptera, Scarabaeidae), pp. 298-320 in Zoological Journal of the Linnean Society 180 on page 314
Batrachospermum helminthosum Bory
Creators: name: Ganesan, E. K.
name: West, John A.
name: Jr, Orlando Necchi
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Rhodophyta
Florideophyceae
Nemaliales
Batrachospermaceae
Batrachospermum
Batrachospermum helminthosum

description: Batrachospermum helminthosum Bory
 Chaugule 2004, p. 68 (misspelled as B. “helminthosporum” Bory).
 Distribution in India: Maharashtra (Dhudsagar, near Castle rock).
 Notes: The Indian specimens were neither described nor illustrated in detail. Assuming that the Indian specimens belong to B. helminthosum, Chaugule’s listing is the first report of this species in India. It is a world-wide species in distribution and studied in details (Vis et al. 2001, 2005; Hall & Vis 2002; Chiasson et al. 2003; Agostinho & Necchi 2014). Hanyuda et al. (2004) studied the biogeography and taxonomy of several B. helminthosum populations in Japanese streams. They showed two distinct clades, but with differences in the haplotypes. Importantly, they concluded that the differences between the North American and Japanese haplotypes may be the result of continental drift and the ensuing seclusion during the Mesozoic era. Since the Indian sub-continent forms a part of the original Gondwana landmass, it will be interesting to know in future studies to which of the 2 clades or other clade the Indian specimens belong.
description: Published as part of Ganesan, E. K., West, John A. & Jr, Orlando Necchi, 2018, A catalogue and bibliography of non-marine (freshwater and estuarine) Rhodophyta (red algae) of India, pp. 1-48 in Phytotaxa 364 (1) on page 15, DOI: 10.11646/phytotaxa.364.1.1, http://zenodo.org/record/13703374
Negative DNA supercoiling induces genome-wide Cas9 off-target activity.
Creators: name: Newton, Matthew D
name: Losito, Marialucrezia
name: Smith, Quentin M
name: Parnandi, Nishita
name: Taylor, Benjamin J
name: Akcakaya, Pinar
name: Maresca, Marcello
name: van Eijk, Patrick
name: Reed, Simon H
name: Boulton, Simon J
name: King, Graeme A
name: Cuomo, Maria Emanuela
name: Rueda, David S
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: classificationCode: Genetics & Genomics
subject: Genetics & Genomics
classificationCode: Genome Integrity & Repair
subject: Genome Integrity & Repair
classificationCode: Model organisms
subject: Model organisms
classificationCode: Biochemistry & Proteomics
subject: Biochemistry & Proteomics
classificationCode: Cell Biology
subject: Cell Biology
classificationCode: Cell Cycle & Chromosomes
subject: Cell Cycle & Chromosomes

description: CRISPR-Cas9 is a powerful gene-editing technology; however, off-target activity remains an important consideration for therapeutic applications. We have previously shown that force-stretching DNA induces off-target activity and hypothesized that distortions of the DNA topology in vivo, such as negative DNA supercoiling, could reduce Cas9 specificity. Using single-molecule optical-tweezers, we demonstrate that negative supercoiling λ-DNA induces sequence-specific Cas9 off-target binding at multiple sites, even at low forces. Using an adapted CIRCLE-seq approach, we detect over 10,000 negative-supercoiling-induced Cas9 off-target double-strand breaks genome-wide caused by increased mismatch tolerance. We further demonstrate in vivo that directed local DNA distortion increases off-target activity in cells and that induced off-target events can be detected during Cas9 genome editing. These data demonstrate that Cas9 off-target activity is regulated by DNA topology in vitro and in vivo, suggesting that cellular processes, such as transcription and replication, could induce off-target activity at previously overlooked sites.
Working Memory and Conflict Adaptation III
Creators: name: Freitas, Antonio
Publisher: name: Open Science Framework
Year: 2022

description: *In this addendum, we have attempted to make the working-memory task more difficult than it was in our first two studies on this topic. More specifically, we will have four candidate locations (rather than three), and we will have two directed-ignore locations (rather than two). Everything else in the study is exactly the same as the other two studies.
MS Gr. class. c. 4 790
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1027 col. 21. Carneiscus, Philistas 2
Drawing by Gennaro Casanova