cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Institutional Voting Trends & Activist Investors — Measuring Mutual Fund Voting Behavior in Proxy Fight Director Elections
Creators: name: Graham, Riley
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: I seek to identify which institutional investors are being the most proactive in terms of voting with or against activists and what factors influence mutual fund voting behavior using a dataset of activist campaign data and mutual fund vote records. Observing director election votes from Q3 2011 to Q2 2016, I conclude that some prominent fund families are siding with activists on a meaningful proportion of proposals. I also determine that variables like Institutional Shareholder Services (ISS) recommendations and activists’ track records negatively affect opposition-sponsored director support, while stronger takeover defenses and prior year stock price return drive increases in the support of activists’ director nominees.
A Mock Data and Science Challenge for Detecting an Astrophysical Stochastic Gravitational-Wave Background with Advanced LIGO and Advanced Virgo
Creators: name: Meacher, Duncan
name: Coughlin, Michael
name: Morris, Sean
name: Regimbau, Tania
name: Christensen, Nelson
name: Kandhasamy, Shivaraj
name: Mandic, Vuk
name: Romano, Joseph D.
name: Thrane, Eric
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The purpose of this mock data and science challenge is to prepare the data analysis and science interpretation for the second generation of gravitational-wave experiments Advanced LIGO-Virgo in the search for a stochastic gravitational-wave background signal of astrophysical origin. Here we present a series of signal and data challenges, with increasing complexity, whose aim is to test the ability of current data analysis pipelines at detecting an astrophysically produced gravitational-wave background, test parameter estimation methods and interpret the results. We introduce the production of these mock data sets that includes a realistic observing scenario data set where we account for different sensitivities of the advanced detectors as they are continuously upgraded toward their design sensitivity. After analysing these with the standard isotropic cross-correlation pipeline we find that we are able to recover the injected gravitational-wave background energy density to within $2σ$ for all of the data sets and present the results from the parameter estimation. The results from this mock data and science challenge show that advanced LIGO and Virgo will be ready and able to make a detection of an astrophysical gravitational-wave background within a few years of operations of the advanced detectors, given a high enough rate of compact binary coalescing events.
Tunneling in a very slow ion-molecule reaction
Creators: name: Wild, Robert
name: Nötzold, Markus
name: Simpson, Malcolm
name: Tran, Thuy Dung
name: Wester, Roland
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Quantum tunneling reactions play a significant role in chemistry when classical pathways are energetically forbidden, be it in gas phase reactions, surface diffusion, or liquid phase chemistry. In general, such tunneling reactions are challenging to calculate theoretically, given the high dimensionality of the quantum dynamics, and also very difficult to identify experimentally. Hydrogenic systems, however, allow for accurate first-principles calculations. In this way the rate of the gas phase proton transfer tunneling reaction of hydrogen molecules with deuterium anions, H_2 + D^- --> H^- + HD, has been calculated, but has so far lacked experimental verification. Here we present high-sensitivity measurements of the reaction rate carried out in a cryogenic 22-pole ion trap. We observe an extremely low rate constant of (5.2 +- 1.6) x 10^(-20) cm^3/s. This measured value agrees with quantum tunneling calculations, serving as a benchmark for molecular theory and advancing the understanding of fundamental collision processes. A deviation of the reaction rate from linear scaling, which is observed at high H_2 densities, can be traced back to previously unobserved heating dynamics in radiofrequency ion traps.
Supplementary document for A chiral topological add-drop filter for integrated quantum photonic circuits - 6167250.pdf
Creators: name: Mehrabad, Mahmoud Jalali
name: Foster, Andrew
name: Martin, Nicholas
name: Dost, Rene
name: Clarke, Edmund
name: Patil, Pallavi
name: Skolnick, Maurice
name: Wilson, Luke
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supporting Information
The effect of yearly influenza vaccinations on the influenza-specific antibody response in healthy weight, overweight and obese individuals
Creators: name: Ahmed, Jubayer
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Obesity has increased tremendously over the past few decades, as the World Health Organization estimates nearly 500 million adults and 43 million children under the age of 5 to be obese. In addition, more than two thirds of the US Adult population is overweight or obese, which is a major area of concern, as obesity increases an individual’s risk of cardiovascular disease, hypertension and other chronic health complications. Obesity has been shown to increase an individual’s susceptibility to the influenza virus. In order to combat this virus, individuals receive an annual influenza vaccination. In the present study, the antibody responses to annual vaccinations of 24 subjects, classified as healthy weight, overweight or obese from the UNC Flu Study were measured, by comparing the percent fold increase in immunoglobulin G subtype levels from pre vaccination to post vaccination. Enzyme linked immunosorbent assay was performed on the subjects serum using the 2013-2014 influenza vaccination strains to assess the levels of immunoglobin G antibodies present. There was a significant relationship between the patient sub group and time in terms of the antibodies present for IgG1 and IgGTotal antibodies. However, there was no significant relationship demonstrated for the IgG2, IgG3, IgG4, and IgGM antibodies. Future studies by performing microneutralization assays and T cell responsiveness should be conducted to further probe the effect of repeated vaccination in obese individuals.
Simulating Macular Degeneration: Review
Creators: name: Macnamara, Anne
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Eye Diseases
subject: Diseases
subject: Medicine and Health Sciences
subject: Macular degeneration
subject: Simulations
subject: Vision impairment

description: This review aims to examine methods that have been used to simulate macular degeneration. Core research questions include: How have these methods been validated? Are simulation experiments an authentic approach to measuring macular degeneration issues?
Asteroids and Comets
Creators: name: Fernandez, Yanga R.
name: Li, Jian-Yang
name: Howell, Ellen S.
name: Woodney, Laura M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Asteroids and comets are remnants from the era of Solar System formation over 4.5 billion years ago, and therefore allow us to address two fundamental questions in astronomy: what was the nature of our protoplanetary disk, and how did the process of planetary accretion occur? The objects we see today have suffered many geophysically-relevant processes in the intervening eons that have altered their surfaces, interiors, and compositions. In this chapter we review our understanding of the origins and evolution of these bodies, discuss the wealth of science returned from spacecraft missions, and motivate important questions to be addressed in the future.
description: 84 pages, 27 figures. To be published in Treatise on Geophysics, 2nd edition (G. Schubert, Editor-in-Chief), Volume 10 (T. Spohn, Editor)
The Rise of Fashion Blogs: A Content Analysis of Fashion Blogs as an Advertising Tool
Creators: name: Leidolf, Emily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: The fashion industry is constantly evolving and changing to keep up with the
latest trends. Fashion blogs are the perfect social media platform for the industry because
they can quickly react to the ever-changing fashion trends. Additionally, blogs open up
the channels of information; they are able to create two-way conversations between
consumers and companies. Fashion bloggers are being used as a new way to advertise
products and create brand awareness. The research puts emphasis on how effective
fashion bloggers are in expanding brand reach, popularity, and advertising new products.
The purpose of this research is to analyze fashion blogs as an advertising tool.
Through a qualitative and quantitative content analysis of 1,200 blog posts, this research
identifies how fashion bloggers have become an effective advertising tool. Additionally,
this research includes a series of recommendations for fashion bloggers and for
companies who wish to utilize them.
THE INTERCONNECTION OF MANAGERIAL INTELLIGENCE AND LEADERSHIP PARTICIPATION IN DRIVING PROJECT SUCCESS IN JORDAN
Creators: name: Khaled M., Abu-Zaid
Publisher: name: CARSON JOURNAL
Year: 2024
Subjects: Managerial intelligence, project success, participative leadership style, directive leadership style, public corporations, Jordan, structural equation modeling.

description: Project success (PS) is essential in project management, and various studies have explored the variables that contribute to PS. However, the impact of leaders’ managerial intelligence (MI) on PS has received limited attention, especially in the context of public corporations in Jordan. This study aimed to investigate the relationship between MI and PS and the moderating role of participative and directive leadership styles (PLS and SLS) in this relationship. A quantitative research design was employed, and data were collected using a questionnaire survey from 216 top-level managers in public corporations in Jordan. Structural equation modeling was used to test the hypothesized model, and the results indicated that MI significantly contributed to PS. Moreover, SLS was found to moderate the relationship between MI and PS. The study's findings have practical implications for project managers in public corporations, emphasizing the importance of MI and leadership styles in achieving PS
Secondary cratering from Rheasilvia as the possible origin of Vesta's equatorial troughs
Creators: name: Hirata, Naoyuki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences
subject: I.6.5
subject: 85

description: Asteroid 4 Vesta has a set of parallel troughs aligned with its equator. Although previous evaluations suggest that it is of shock fracturing tectonic origin, we propose that the equatorial troughs can be created by secondary cratering from the largest impact basin, Rheasilvia. We calculated the trajectories of ejecta particles from Rheasilvia by considering Vesta's rapid rotation. As a result, we found that secondary craters should be parallel to the latitude. In particular, if we assume that ejecta particles are launched at an initial launch velocity of approximately 350-380 m/s and a launch angle of 25 degree, the parallel equatorial troughs, the Divalia Fossae, can be suitably explained by secondary cratering. This model works well on objects, such as Haumea, Salacia, and Chariklo, but not on Mercury, the Moon, and regular satellites.
description: 35 pages, 13 figures, 3 tables
Two iridates, two models, two approaches: a comparative study on magnetism in 3D honeycomb materials
Creators: name: Lee, Eric Kin-Ho
name: Rau, Jeffrey G.
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two recent theoretical works studied the role of Kitaev interactions in the newly observed incommensurate magnetic order in the hyper-honeycomb ($β$-Li$_2$IrO$_3$) and stripy-honeycomb ($γ$-Li$_2$IrO$_3$) iridates. Each of these works analyzed a different model ($JKΓ$ versus coupled zigzag chain model) using a contrasting method (classical versus soft-spin analysis). The lack of commonality between these works precludes meaningful comparisons and a proper understanding of these unusual orderings. In this study, we complete the unfinished picture initiated by these two works by solving both models with both approaches for both 3D honeycomb iridates. Through comparisons between all combinations of models, techniques, and materials, we find that the bond-isotropic $JKΓ$ model consistently predicts the experimental phase of $β$-Li$_2$IrO$_3$ regardless of the method used, while the experimental phase of $γ$-Li$_2$IrO$_3$ can be generated by the soft-spin approach with eigenmode mixing irrespective of the model used. To gain further insights, we solve a 1D quantum spin-chain model related to both 3D models using the density matrix renormalization group method to form a benchmark. We discover that in the 1D model, incommensurate correlations in the classical and soft-spin analysis survive in the quantum limit only in the presence of the symmetric-off-diagonal exchange $Γ$ found in the $JKΓ$ model. The relevance of these results to the real materials are also discussed.
description: 10 pages, 6 figures
Filter-informed Spectral Graph Wavelet Networks for Multiscale Feature Extraction and Intelligent Fault Diagnosis
Creators: name: Li, Tianfu
name: Sun, Chuang
name: Fink, Olga
name: Yang, Yuangui
name: Chen, Xuefeng
name: Yan, Ruqiang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Intelligent fault diagnosis has been increasingly improved with the evolution of deep learning (DL) approaches. Recently, the emerging graph neural networks (GNNs) have also been introduced in the field of fault diagnosis with the goal to make better use of the inductive bias of the interdependencies between the different sensor measurements. However, there are some limitations with these GNN-based fault diagnosis methods. First, they lack the ability to realize multiscale feature extraction due to the fixed receptive field of GNNs. Secondly, they eventually encounter the over-smoothing problem with increase of model depth. Lastly, the extracted features of these GNNs are hard to understand owing to the black-box nature of GNNs. To address these issues, a filter-informed spectral graph wavelet network (SGWN) is proposed in this paper. In SGWN, the spectral graph wavelet convolutional (SGWConv) layer is established upon the spectral graph wavelet transform, which can decompose a graph signal into scaling function coefficients and spectral graph wavelet coefficients. With the help of SGWConv, SGWN is able to prevent the over-smoothing problem caused by long-range low-pass filtering, by simultaneously extracting low-pass and band-pass features. Furthermore, to speed up the computation of SGWN, the scaling kernel function and graph wavelet kernel function in SGWConv are approximated by the Chebyshev polynomials. The effectiveness of the proposed SGWN is evaluated on the collected solenoid valve dataset and aero-engine intershaft bearing dataset. The experimental results show that SGWN can outperform the comparative methods in both diagnostic accuracy and the ability to prevent over-smoothing. Moreover, its extracted features are also interpretable with domain knowledge.
TheGreefa Training Manual
Creators: name: Danesi, Serena
name: Baumann, Raphael
name: Buchholz, Martin
name: Buchholz, Reiner
name: Chaibi, Thameur
name: Soussi, Meriem
name: La Carbonara, Claudio
name: Zanetti, Norma
name: Meyer, Hanspeter
name: Hercelin, Raphaël
name: Vallee, Nathalie
name: Pluta, Jakub
name: Molina Aiz, Francisco Domingo
name: Moragues, Juan Luis
name: Benito, Begoña
name: Geyer, Philipp
Publisher: name: Zenodo
Year: 2024
Subjects: training
greenhouses
H2020
TheGreefa

description: The document is the Training Manual presenting the final results achieved in TheGreefa EU-funded project (GA 101000801).

The Training Manual is divided into 5 modules going through the intorduction, presentation of the developed technologies for greenhouses, real scale demonstration, evaluation of impacts and social aspects.
A New Direction in Evaluating the Outcomes of Creative Placemaking: Arts Ecosystems, Vibrancy, and Social Media
Creators: name: Chakravarthy, Meera
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The arts play a large role in our world, impacting all types of people, and all sectors of the economy. From individual artists to large nonprofit institutions, the arts live within interconnected systems. In recent years, there has been a trend in arts funding called “creative placemaking,” which funds arts projects designed to physically place arts and culture in the center of communities and urban planning strategies. Expanding upon the concept of “placemaking” coined by Jane Jacobs in the 1960s, creative placemaking attempts to get actual community stakeholders—community members, grassroots organizations, and specifically the artists in a community—to help plan and execute changes in the places they live. The benefits of creative placemaking are measured in both economic and noneconomic ways. Funding agencies, however, have tended to use mostly economic measures to gauge the impact of creative placemaking and the arts. Analysts saw economic change as a representation of well-being: the more financially well-off
this arts organization and its surrounding area become, the better they are doing.
My research focuses on understanding a new way to evaluate creative placemaking
impacts—the well-being of a place, also called its vibrancy. Indeed, the arts ecosystem, the interactions amongst producers and consumers of arts communities, has become more complex to include people communicating and engaging with the arts on digital platforms—a space to share attitudes and behaviors on arts projects. One effective medium to evaluate vibrancy of a place, I propose, is through the data we can collect on social media. In this paper, I outline the need for a new way of thinking about the impact of creative placemaking projects and make a case for collecting social media data to measure vibrancy, the well-being of a place.
Type IIn supernovae as sources of high energy astrophysical neutrinos
Creators: name: Zirakashvili, V. N.
name: Ptuskin, V. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is shown that high-energy astrophysical neutrinos observed in the IceCube experiment can be produced by protons accelerated in extragalactic Type IIn supernova remnants by shocks propagating in the dense circumstellar medium. The nonlinear diffusive shock acceleration model is used for description of particle acceleration. We calculate the neutrino spectrum produced by an individual Type IIn supernova and the spectrum of neutrino background produced by IIn supernovae in the expanding Universe. We also found that the arrival direction of one Icecube neutrino candidate (track event 47) is at 1.35$^{\circ }$ from Type IIn supernova 2005bx.
description: 7 pages, 7 figures, submitted to Astroparticle Physics
Gender policing: Undergraduate Experience and Psychosocial Outcomes
Creators: name: Ivey, Garrett Blane
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: This study examined the social phenomenon of gender policing. Gender policing refers to the words and actions of individuals used to police gender expression, based on expected societal norms surrounding gender. Gender policing is a particular experience that occurs for individuals who are perceived as not adequately or accurately performing their gender, with the assumption that one's gender must be directly linked with "biological" sex. A total of 457 UNC students completed self-report questionnaires assessing their personal attitudes about and experiences of gender policing. Additionally, participants completed self-report measures of depression, loneliness, and sense of belonging. Consistent with hypotheses, experiences of gender policing were associated with higher levels of negative psychosocial outcomes. There was no difference in rates of experiencing gender policing by biological sex. However, sex was found to be a moderator of the relationship between experiencing gender policing and negative outcomes, such that the relationship was stronger among "biological" females. The results shed light on an area of psychology that is not well researched, providing us with further information regarding the negative outcomes associated with gender policing. By examining the undergraduate experience, it is clear that gender policing is a social phenomenon that continues to exist on college campuses and requires immediate attention and action.
title: Preferences and perceptions on coaching behaviors in relation to performance in university and CEGEP baseball players across Canada
Creators: name: Haddad, Christopher
Publisher: name: Memorial University of Newfoundland
Year: 2021

description: This cross-sectional survey study examined the congruence of player preferences and perceptions of leader behaviors on athletic performance among university and CEGEP baseball athletes across Canada. In accordance with the Multidimensional Model of Leadership, congruence between preferences and perceptions were hypothesized to positively relate to individual baseball performance. The Leadership Scale for Sport was used to measure athlete leadership preferences and perceptions of their coach’s leader behaviors across five behavioral dimensions (e.g., training and instruction, democratic, autocratic, social support, positive feedback). Paired t-tests examined differences in athlete preferences and perceptions. Correlations were computed to evaluate the relationships between perceived coaching behavior and athlete performance. Participants (n = 51) were instructed to complete a self-administered survey. Athletes were divided into groups based on their designated baseball position (e.g., fielder or pitcher). Hierarchical regressions were used to examine the variance in performance relating to the interaction leader preferences and perceptions. The results found a significant interaction effect for social support on performance. Paired samples t-tests revealed differences in training and instruction behavior mean score. Perceptions of training and instruction and positive feedback behaviors significantly correlated with fielder and pitcher performance, respectively.
Can gender-inclusive pronouns reduce binary gender categorization of faces?
Creators: name: van Berlekom, Elli
name: Lindqvist, Anna
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: gender studies
subject: pronoun
subject: social categorisation
subject: Social psychology

description: An experiment to test the effects a a newly introduced Swedish gender inclusive pronoun on gender categorizations of faces. Participants first use the gender inclusive pronoun (or a gendered pronoun) to describe a drawn silhouette and then they complete a series of categorizations of gender-ambiguous faces We hypothesize that using the inclusive pronouns causes participants to be more likely to categorize subsequent faces as neither woman nor man. We will also test whether this effect depends on existentialist views on gender.
Hyperlink prediction via local random walks and Jensen-Shannon divergence
Creators: name: Xu, Xin-Jian
name: Deng, Chong
name: Zhang, Li-Jie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 05C65, 05C81, 94A17

description: Many real-world systems involving higher-order interactions can be modeled by hypergraphs, where vertices represent the systemic units and hyperedges describe the interactions among them. In this paper, we focus on the problem of hyperlink prediction which aims at inferring missing hyperlinks based on observed hyperlinks. We propose three similarity indices for hyperlink prediction based on local random walks and Jensen-Shannon divergence. Numerical experiments show that the proposed indices outperform the state-of-the-art methods on a broad range of datasets.
description: IoP Latex, 15 pages, 1 figures
The Rising Tide of the American Militia: An Unlikely Product of 21st Century Intervention
Creators: name: Kellomaki, Erik
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Up to this point, very little research has been conducted on the militia
organizations formed and growing post-2008, and many fail to realize that these new
militia movements exhibit a highly different structure, ideology, and set of targets from
their 1990’s counterparts. Even less research exists on the actual causes of the
skyrocketing motion of the movement’s popularity. This thesis seeks to fill this
informational void and assert that the wars in Iraq and Afghanistan played an
instrumental role not only in the organizational mobilization of the modern American
militia movement, but also in molding its constitutionally-focused, anti-government,
patriot ideology and the way it conducts its operations. Although the 21st century
American intervention influenced militia resurgence to a high degree, it is essential to
note that changing domestic political conditions paralleled it. In order to best understand
the subject matter, this thesis seeks to not paint the American militia as heroes nor as
barbaric, hateful gunslingers, but as an ideologically determined minority group that is
willing to threaten and even resort to violence for its political purposes.
The Changing 'Vichy Syndrome': Sites of Holocaust and Algerian Traumas in Official French Memory
Creators: name: Howell, Mary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Memory as a realm for historical study is a relatively recent development in
modern scholarship, and much of the research in this field relies heavily on
historiography, and for the study of memory in France this includes historiography
surrounding the Holocaust and World War II. For the purpose of this thesis, selected
works of Pierre Nora and Henry Rousso form the historiographical foundation for
analysis of recent historical traumas in France. Specifically Rousso’s theory of a “Vichy
Syndrome” supplemented by Nora’s concept of lieux de mémoire—“sites” of memory—
have shaped my research and the arguments herein relate back to these theories. Using
this framework, I attempt to situate my findings within the larger study of memory and
the complexities of “writing trauma.” I inevitably had to make selections for which
components of the Vichy Syndrome to address, both for clarity’s sake and because the
French memory of modern conflicts and traumas extends into more issues than I can
discuss in a single thesis.
Large Non-Gaussianity in Slow-Roll Inflation
Creators: name: Pirtskhalava, David
name: Santoni, Luca
name: Trincherini, Enrico
name: Vernizzi, Filippo
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Canonical models of single-field, slow-roll inflation do not lead to appreciable non-Gaussianity, unless derivative interactions of the inflaton become uncontrollably large. We propose a novel slow-roll scenario where scalar perturbations propagate at a subluminal speed, leading to sizeable equilateral non-Gaussianity, $f^{\rm equil}_{\rm NL}\propto 1/c_s^4$, largely insensitive to the ultraviolet physics. The model is based on a low-energy effective theory characterized by weakly broken invariance under internal galileon transformations, $ϕ\toϕ+b_μx^μ$, which protects the properties of perturbations from large quantum corrections. This provides the unique alternative to models such as DBI inflation in generating strongly subluminal/non-Gaussian scalar perturbations.
description: 5 pages
Quantum $k$-uniform states from quantum orthogonal arrays
Creators: name: Zang, Yajuan
name: Tian, Zihong
name: Fei, Shao-Ming
name: Zuo, Hui-Juan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The quantum orthogonal arrays define remarkable classes of multipartite entangled states called $k$-uniform states whose every reductions to $k$ parties are maximally mixed. We present constructions of quantum orthogonal arrays of strength 2 with levels of prime power, as well as some constructions of strength 3. As a consequence, we give infinite classes of 2-uniform states of $N$ systems with dimension of prime power $d\geq 2$ for arbitrary $N\geq 5$; 3-uniform states of $N$-qubit systems for arbitrary $N\geq 6$ and $N\neq 7,8,9,11$; 3-uniform states of $N$ systems with dimension of prime power $d\geq 7$ for arbitrary $N\geq 7$.
description: 26 pages, 1 figures
The Dak'Art Dilemma - Curating Vision Beyond Biennial Politics in the Dakarois Artistic Landscape
Creators: name: Clager, Hannah
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: The Dak’Art biennial is a state-sponsored contemporary and pan-African artistic event
and exhibition held in Dakar, Senegal, that brings together international artists and curators from
all continents to engage with and to promote African artists on a global platform. Contemporary
African artists have been historically marginalized in the global art scene, as such Dak’Art offers
itself as a corrective to this as the only major pan-African art biennial of its kind. Despite
international and governmental support for Dak’Art, local and exhibitionary politics often hinder
and challenge the vision, execution, and success of large-scale global art fairs. By examining this
case study of the 2012 Dak’Art biennial through both a visual analysis of select IN and OFF
exhibition sites and an ethnographic analysis of Senegalese artistic production and oral histories,
I aimed at illuminating some of the greater issues and frameworks inscribed in the biennial
format as applied and experienced within a Senegalese context. By looking directly at the
author’s interactions at the 2012 Dak’Art biennial, and through interviews held with local artists,
curators, critics, and government officials the author assesses whether this biennial model is an
effective platform for artistic agency in the Dakarois artistic landscape. More than ever it is
essential to remember that these international art biennials continue to be affixed to the local, and
it is important not to neglect or diminish these local histories and contexts or the role that artists
play in them, as the scholarship and proliferation of international art biennials continues as a
popular medium of exhibiting contemporary artworks today.
U.S. Immigration Policy and Public Opinion Between 2007 and 2016
Creators: name: Burton, Amy
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: In the last few decades, immigration policy has once again risen to the forefront of United States politics. A 2018 Gallup poll found that up to a fifth of U.S. residents identify immigration as “the most important problem” facing the country. Despite high issue prioritization in the mass public, political elites have been unable to implement policy changes to confront what the public views as a problem.This thesis aims to better understand a) how the voting population’s immigration policy preferences have shifted in the last decade, b) how politics, geography, and immigrant interaction play a role in these shifts, and c) how other major discernable factors such as state median age and unemployment rate covary with policy preferences. In order to understand these concepts, it is necessary to provide a brief account of U.S. immigration history, explore some of the existing theoretical frameworks, and consider the disconnect between public policy and public opinion.
From stable to unstable anomaly-induced inflation
Creators: name: Netto, Tiberio de Paula
name: Pelinson, Ana M.
name: Shapiro, Ilya L.
name: Starobinsky, Alexei A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Quantum effects derived through conformal anomaly lead to an inflationary model that can be either stable or unstable. The unstable version requires a large dimensionless coefficient of about $5\times 10^8$ in front of the $R^2$ term that results in the inflationary regime in the $R+R^2$ ("Starobinsky") model being a generic intermediate attractor. In this case the non-local terms in the effective action are practically irrelevant, and there is a 'graceful exit' to a low curvature matter-like dominated stage driven by high-frequency oscillations of $R$ -- scalarons, which later decay to pairs of all particles and antiparticles, with the amount of primordial scalar (density) perturbations required by observations. The stable version is a genuine generic attractor, so there is no exit from it. We discuss a possible transition from stable to unstable phases of inflation. It is shown that this transition is automatic if the sharp cut-off approximation is assumed for quantum corrections in the period of transition. Furthermore, we describe two different quantum mechanisms that may provide a required large $\,R^2$-term in the transition period.
description: Significant changes made due to the observations of the referee. Fits the version accepted in Eur.Phys.Journ.C
The Hurry and the Harm
Creators: name: Bhowmik, Anuradha
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: CONTENTS: Afterschool Pit Stop; High Stakes; Lunchtime in Atlantic City; Tea Parties; Richmond Avenue Dollar Store; Lipstick Birthday Photograph, 1997; 60 milligrams; Roommates; To Eli Lilly & Company, with Love; Color Me Happy; Seasonal; Scorekeeper; Notice of Baggage Inspection; Girls, Interrupted; Category C; Knowledge Obtained from Dating a White Boy; Role Play; Customer Service Evaluation; Part-Time Vegetarian; Anonymity; Comorbidity; Founding Father; Food Coloring; Postscript; Paper Dolls; Roots
METHODS FOR DEVELOPING PRONUNCIATION IN FRENCH
Creators: name: Narzulloyeva, Dilfuza
Publisher: name: Zenodo
Year: 2024

description: One of the languages that people read and speak the most throughout the world is French. Many students find it difficult to pronounce. When compared to other languages, the French language has unique pronunciation traits where the blend of sounds, accent, and intonation are crucial components. This article offers practical techniques, firsthand accounts, and advice on how to master French pronunciation.
Rydberg-Stark states in oscillating electric fields
Creators: name: Zhelyazkova, V.
name: Hogan, S. D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Experimental and theoretical studies of the effects of weak radio-frequency electric fields on Rydberg-Stark states with electric dipole moments as large as 10000 D are reported. High-resolution laser spectroscopic studies of Rydberg states with principal quantum number $n=52$ and $53$ were performed in pulsed supersonic beams of metastable helium with the excited atoms detected by pulsed electric field ionisation. Experiments were carried out in the presence of sinusoidally oscillating electric fields with frequencies of 20~MHz, amplitudes of up to 120~mV/cm, and dc offsets of up to 4.4~V/cm. In weak fields the experimentally recorded spectra are in excellent agreement with the results of calculations carried out using Floquet methods to account for electric dipole couplings in the oscillating fields. This highlights the validity of these techniques for the accurate calculation of the Stark energy level structure in such fields, and the limitations of the calculations in stronger fields where $n-$mixing and higher-order contributions become important.
description: 19 pages, 11 figures in Molecular Physics, (2015)
"Snake your way to success": Innovations in College Journalism Education at Select Institutions
Creators: name: Benner, Kendra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Journalism educators are tasked with preparing students for the rapidly changing media
industry. But, educators face the challenge of keeping up with the evolving industry while
navigating elements of higher education that oppose innovation. However, many journalism
educators are managing to innovate despite these challenges. In-depth interviews were conducted with eight innovative journalism educators. Their responses indicated several insights about innovating in journalism education, what drives innovation, and the nature of an innovator. Given the importance of innovation in journalism education, understanding what drives innovation in this context is vital. This study provides insights into how innovative educators work and think, and recommendations of how journalism administrators and educators can encourage innovation in their schools.
Constructible sheaves on nilpotent cones in rather good characteristic
Creators: name: Achar, Pramod
name: Henderson, Anthony
name: Juteau, Daniel
name: Riche, Simon
Publisher: name: arXiv
Year: 2015
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G05 (Primary), 17B08 (Secondary)

description: We study some aspects of modular generalized Springer theory for a complex reductive group $G$ with coefficients in a field $\mathbb k$ under the assumption that the characteristic $\ell$ of $\mathbb k$ is rather good for $G$, i.e., $\ell$ is good and does not divide the order of the component group of the centre of $G$. We prove a comparison theorem relating the characteristic-$\ell$ generalized Springer correspondence to the characteristic-$0$ version. We also consider Mautner's characteristic-$\ell$ `cleanness conjecture'; we prove it in some cases; and we deduce several consequences, including a classification of supercuspidal sheaves and an orthogonal decomposition of the equivariant derived category of the nilpotent cone.
description: 26 pages
Thermal Corrections to Rényi entropies for Free Fermions
Creators: name: Herzog, Christopher P.
name: Spillane, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We calculate thermal corrections to Rényi entropies for free massless fermions on a sphere. More specifically, we take a free fermion on $\mathbb{R}\times\mathbb{S}^{d-1}$ and calculate the leading thermal correction to the Rényi entropies for a cap like region with opening angle $2θ$. By expanding the density matrix in a Boltzmann sum, the problem of finding the Rényi entropies can be mapped to the problem of calculating a two point function on an $n$ sheeted cover of the sphere. We follow previous work for conformal field theories to map the problem on the sphere to a conical region in Euclidean space. By using the method of images, we calculate the two point function and recover the Rényi entropies.
description: 15 pages, 5 figures
Comparative study of the electronic structures of the In and Sn/In2O3 (111) interfaces
Creators: name: Nazarzahdemoafi, M.
name: Titze, F.
name: Machulik, S.
name: Janowitz, C.
name: Galazka, Z.
name: Manzke, R.
name: Mulazzi, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic structure of the transparent semiconductor In2O3 has been studied by angle resolved photoemission spectroscopy upon deposition of metallic indium and also tin on the surface of the semiconductor. By deposition of metallic indium on In2O3 (111) single crystals, we detected the formation of a free-electron like band of effective mass (0.38+-0.05) m0. At low coverages, metallic In shifts the Fermi level of In2O3 to higher energies and a new electronic state forms at the metal/semiconductor interface. This state of two-dimensional character (2D-electron gas) is completely responsible for the electrical conduction in In2O3 (111) at the surface region and has a band dispersion, which does not correspond to the previously found surface accumulation layers in this material. Despite the similarity of the electronic properties of In and Sn, a larger downward banding was observed by Sn coverage, which was not accompanied by the appearance of the surface state.
description: 5 pages, 3 figures
(Return to) physical activiy following active COVID-19 infection
Creators: name: Jones, Matthew
name: Cashin, Aidan
name: McAuley, James
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Sports Sciences
subject: Medicine and Health Sciences
subject: Rehabilitation and Therapy

description: This review seeks to better understand the long-term health impact of COVID-19. More specifically, this review seeks to quantify the prevalence of long-term symptoms and clinical manifestations of COVID-19 that have the potential to impact (return to) physical activity. This may include symptoms that are common barriers to exercise (e.g. pain, fatigue, dyspnoea) and/or more serious associated pathological changes (e.g. cardiac and respiratory abnormalities) that require greater screening and monitoring as they may increase the risk of serious adverse events during physical activity.
Curriculum Learning for Compositional Visual Reasoning
Creators: name: Aissa, Wafa
name: Ferecatu, Marin
name: Crucianu, Michel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Visual Question Answering (VQA) is a complex task requiring large datasets and expensive training. Neural Module Networks (NMN) first translate the question to a reasoning path, then follow that path to analyze the image and provide an answer. We propose an NMN method that relies on predefined cross-modal embeddings to ``warm start'' learning on the GQA dataset, then focus on Curriculum Learning (CL) as a way to improve training and make a better use of the data. Several difficulty criteria are employed for defining CL methods. We show that by an appropriate selection of the CL method the cost of training and the amount of training data can be greatly reduced, with a limited impact on the final VQA accuracy. Furthermore, we introduce intermediate losses during training and find that this allows to simplify the CL strategy.
The origin of dispersion in DLA metallicities
Creators: name: Dvorkin, Irina
name: Silk, Joseph
name: Vangioni, Elisabeth
name: Petitjean, Patrick
name: Olive, Keith A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent chemical abundance measurements of damped Ly-alpha absorbers (DLAs) revealed an intrinsic scatter in their metallicity of ~0.5 dex out to z~5. In order to explore the origin of this scatter, we build a semi-analytic model which traces the chemical evolution of the interstellar matter in small regions of the Universe with different mean density, from over- to underdense regions. We show that the different histories of structure formation in these regions, namely halo abundance, mass and stellar content, is reflected in the chemical properties of the protogalaxies, and in particular of DLAs. We calculate mean metallicity-redshift relations and show that the metallicity dispersion arising from this environmental effect amounts to ~0.25 dex and is an important contributor to the observed overall intrinsic scatter.
description: 6 pages, 2 figures. Accepted for publication in MNRAS Letters
Deep Chandra observations of Pictor A
Creators: name: Hardcastle, M. J.
name: Lenc, E.
name: Birkinshaw, M.
name: Croston, J. H.
name: Goodger, J. L.
name: Marshall, H. L.
name: Perlman, E. S.
name: Siemiginowska, A.
name: Stawarz, L.
name: Worrall, D. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on deep Chandra observations of the nearby broad-line radio galaxy Pictor A, which we combine with new Australia Telescope Compact Array (ATCA) observations. The new X-ray data have a factor 4 more exposure than observations previously presented and span a 15-year time baseline, allowing a detailed study of the spatial, temporal and spectral properties of the AGN, jet, hotspot and lobes. We present evidence for further time variation of the jet, though the flare that we reported in previous work remains the most significantly detected time-varying feature. We also confirm previous tentative evidence for a faint counterjet. Based on the radio through X-ray spectrum of the jet and its detailed spatial structure, and on the properties of the counterjet, we argue that inverse-Compton models can be conclusively rejected, and propose that the X-ray emission from the jet is synchrotron emission from particles accelerated in the boundary layer of a relativistic jet. For the first time, we find evidence that the bright western hotspot is also time-varying in X-rays, and we connect this to the small-scale structure in the hotspot seen in high-resolution radio observations. The new data allow us to confirm that the spectrum of the lobes is in good agreement with the predictions of an inverse-Compton model and we show that the data favour models in which the filaments seen in the radio images are predominantly the result of spatial variation of magnetic fields in the presence of a relatively uniform electron distribution.
description: 21 pages, 11 colour figures. Accepted by MNRAS
"What I stand for / is what I stand on": Sense of Place and the Work of Wendell Berry
Creators: name: Pinckney, Joel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Wendell Berry’s writing impresses upon his readers a very specific and intimate sense of
place. In a tradition of Southern literary agrarianism, Berry’s ideology is distinguished by its emphasis on an agrarianism rooted in practice rather than merely policy. The Port William membership exists in a small town threatened by “big ideas” such as war, urbanization, the industrialization of agriculture, and conventional notions of self-improvement. In this thesis I will argue that Berry’s sense of place is grounded in care and belonging for people and places. To do so, the following chapters will explore themes of farming philosophies, river symbolism, racial wounds, and displacement in his work. The author’s biography helps to explain his interest in such subjects.