cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
WORKING FROM WHEREVER, WHENEVER: LESSONS FROM THE COVID-19 PANDEMIC THAT ARE SHAPING THE FUTURE OF WORK
Creators: name: McCauley Palmer
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: The COVID-19 pandemic forced millions of workers to adapt to a remote working environment nearly overnight. This reality tested the limits of enterprise technology, making this transition uniquely remarkable. For these reasons, the early 2020s present an important time to revisit the utility of worker autonomy and job meaningfulness to prepare for a post-pandemic workplace. The purpose of my research is to explore the lessons that employers and employees have learned throughout the pandemic, and how these lessons are shaping the future of work. Through 300+ survey responses and four interviews, I investigate the perceptions of autonomy and meaningfulness in different working arrangements. My results indicate that workers generally desire increased temporal and locational autonomy, although the utility of autonomy varies depending on their circumstances. Additionally, workers seek more opportunities for socially meaningful work in a post-pandemic context, and providing these opportunities benefits multiple stakeholder groups.
Design and Synthesis of Protein Mimetic Catalysts
Creators: name: Sherman, Nicole
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Enzymes are natural proteins whose complex chemical structures allow them to effectively catalyze reactions. Despite their catalytic abilities, enzymes are sensitive to protease degradation, limited in scope, and restricted to biological conditions. As an alternative, this paper demonstrates the design and synthesis of two enzyme-inspired catalysts whose three-dimensional structure enhances their catalytic ability while avoiding the drawbacks of natural enzymes. The first catalyst consists of a peptoid (N-substituted glycine oligomer) backbone that allows for sequence-dependent modulation of secondary structure. A helical peptoid sequence was designed to facilitate interactions between imidazole functional groups to enhance catalysis. Peptoids were synthesized on an automated peptide synthesizer and characterized by LC-MS and circular dichroism. The second catalyst consists of a random copolymer backbone capable of covalent cross-linking allowing for the formation of hydrophobic pockets. Carbon-carbon cross-coupling reactions, specifically the Suzuki and Heck reaction, were selected to test polymer-based catalysis and determine the effect of polymer cross-linking on catalysis. Triphenylphosphine containing monomers were included to allow for complexation of the polymer to palladium. Polymers were synthesized by reversible addition fragmentation chain transfer (RAFT). Catalyst effectiveness was determined by reaction yield measured by NMR.
Precise identification of cancer cells from allelic imbalances in single cell transcriptomes.
Creators: name: Trinh, Mi K
name: Pacyna, Clarissa N
name: Kildisiute, Gerda
name: Thevanesan, Christine
name: Piapi, Alice
name: Ambridge, Kirsty
name: Anderson, Nathaniel D
name: Khabirova, Eleonora
name: Prigmore, Elena
name: Straathof, Karin
name: Behjati, Sam
name: Young, Matthew D
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Article
/631/114/1314
/631/67/69
/631/208/212
/631/208/514
/45/23
/45/91
article

description: A fundamental step of tumour single cell mRNA analysis is separating cancer and non-cancer cells. We show that the common approach to separation, using shifts in average expression, can lead to erroneous biological conclusions. By contrast, allelic imbalances representing copy number changes directly detect the cancer genotype and accurately separate cancer from non-cancer cells. Our findings provide a definitive approach to identifying cancer cells from single cell mRNA sequencing data.
Falsifying High-Scale Baryogenesis with Neutrinoless Double Beta Decay and Lepton Flavor Violation
Creators: name: Deppisch, Frank F.
name: Harz, Julia
name: Hirsch, Martin
name: Huang, Wei-Chih
name: Päs, Heinrich
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Interactions that manifest themselves as lepton number violating processes at low energies in combination with sphaleron transitions typically erase any preexisting baryon asymmetry of the Universe. In this article, we discuss the constraints obtained from an observation of neutrinoless double beta decay in this context. If a new physics mechanism of neutrinoless double beta decay other than the standard light neutrino exchange is observed, typical scenarios of high-scale baryogenesis will be excluded unless the baryon asymmetry is stabilized via some new mechanism. We also sketch how this conclusion can be extended beyond the first lepton generation by incorporating lepton flavor violating processes.
description: 5 pages, 2 figures; minor additions, matches published version
(502430) George Fenwick
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Probing Intramolecular Interactions with Dynamic Exchange
Creators: name: Jeshurun Luke
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Proteins offer a highly selective mode of separation for various compounds as a result of evolved binding moieties and complex structure. However, restricted by narrow conditions to ensure optimum functions, proteins lack the robustness suitable for a wide array of applications. Polymers serve as an attractive alternative given its structural versatility and possible biomimetic capability1. The development of polymers with selective binding capabilities can therefore draw inspiration from proteins. We aim to develop polymers and discover moieties capable of selective binding using dynamic covalent chemistry through disulfide exchange. We first focused on determining the effect of polymer composition, specifically hydrophobicity and hydrogen bonding, on single-chain polymer folding by studying the bound thiol distribution. We developed and optimized methods of polymer synthesis and purification as well as recovery through our high-throughput dynamic exchange assays. We found that polymers with random coil structure in solution were unlikely to be enriched in bound thiols. We further studied the effect of polymer architecture through the synthesis of a block copolymer library in addition to dissipative particle dynamics simulations using a coarse-grained HP-polymer systems. Simulation results demonstrated no significant difference in assembled morphologies between positioning of dynamic resides within micelle architecture. Further study includes determining the differences in reactivity for each block system for a reversible exchange reaction.
A Minimal Orbital Quantization Model and Quantum Hall Effect Analog in Pilot-Wave Hydrodynamics
Creators: name: Blitstein, Austin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: In the past decade, it has been demonstrated that droplets walking along the surface of a rotating,
vibrating fluid bath, or walkers, exhibit robust orbital quantization. This phenomenon, although predicted by the previously derived integro-differential equations of motion, lacks a clear mechanism. We here present a reduced model containing the minimal ingredients for the emergence of orbital quantization. Namely, by taking into account the contribution to the wave field from the walker’s recent
history and points where the source-to-walker distance is instantaneously not changing, we capture
numerically equivalent quantization of orbital radius. Further, we develop a new hydrodynamic analog
to the Quantum Hall Effect that arises when a constant force mimicking an electric field is added to
the equation of motion. In particular, we show the existence of quantization of a mechanical analog
to electrical resistivity, analogous to what is observed in the Quantum Hall Effect. In doing so, we
further blur the line between classical and quantum mechanics, and show one way quantization of
resistivity could emerge in a deterministic pilot-wave model.
(502421) George Francis Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Probing the Few Body Spin-1/2 Fermion Problem with Eigenvector Continuation and Algebra Automation
Creators: name: Blitstein, Austin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Recently in the nuclear structure community, a variational method called Eigenvector Continuation has been gaining traction as a means to efficiently compute the energy spectrum of a strongly interacting system. We here summarize its convergence properties, elucidating the philosophy of the method with a simple toy model consisting of an anharmonic oscillator. We then consider in all generality the energy spectrum of few body, spin-1/2, non relativistic fermions interacting via a short range contact interaction. The results are bench-marked with those available in the literature at unitarity, and are extended to fill in the gap of results from the weakly repulsive to the strongly interacting regime. The calculations proceed entirely analytically, allowing us to make use of an automated algebra framework to study larger fermion systems and increase the accuracy of our results. In doing so, we gain further insight into the study of nuclear dynamics, where the central problem consists of analyzing strongly interacting protons and neutrons.
(502422) Albert Jules Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The Effects of CHIP on UBB+1 Aggregates in COS-7 Cells
Creators: name: Rice, Olivia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Accounting for between 60-80% of dementia cases, Alzheimer’s disease is the sixth leading cause of death in the world (Chen, 2016). It is categorized as a proteinopathy, a disease caused by accumulations of misfolded, malfunctioning, or no longer needed proteins. Such accumulations may be attributed to errors in the ubiquitin-proteasome pathway, a method for marking and degrading proteins (Chen, 2016). Wildtype ubiquitin (UBBwt) is a small seventy-six amino acid protein responsible for marking proteins for degradation by the proteasome. A proteasome will recognize polyubiquitin chains of four ubiquitin and begin the protein degradation process (Dennissen, 2013). UBB+1, a frameshift mutation in the UBB gene, results in an inability for ubiquitin to bind to each other, thus, stopping the growth of ubiquitin chains. With no ubiquitination of the protein substrates, proteasome recruitment is prevented, resulting in a toxic accumulation of proteins (Munari, 2017). A study conducted by Miller et al. suggested that the carboxyl terminus of Hsc70 interacting protein (CHIP) could be used to decrease the effects of UBB+1 in COS-7 cells. To investigate these results, COS-7 cells were transfected with differing lengths of GFP-tagged polyglutamine (Q23 and Q74), which were used as the accumulating proteins, UBBwt, UBB+1, and CHIP vectors in various combinations. Transfected cells were viewed and analyzed under a fluorescent microscope to compare the brightness, amount of aggregates per cell, and amount overall of aggregates per well formed. Filter traps and western blotting were used to analyze the amount of each protein present in the cells. In cells containing UBB+1 and Q74, equal amounts of Q74 were present at the end. In cells containing Ubbwt and Q74, less Q74 was present after two days. Cells containing Q74, UBB+1, and CHIP displayed a similar concentration of Q74 after two days to the cells containing UBBwt and Q74. These results suggest that CHIP can mitigate accumulations of proteins caused by UBB+1 in Cos-7 cells.
Sammlungsübergreifende Zusammenarbeit in der Numismatik. Das Normendatenportal und neue Perspektiven mit NFDI4 Objects. Digital Summer School der Stiftung Universität Hildesheim zum FDM.
Creators: name: Prof. Dr. Bernhard Weisser
Publisher: name: Zenodo
Year: 2020
Subjects: FDM
Forschungsdatenmanagement
NFDI
NFDI4objects
Numismatik
Normdaten
Normdatenportal
RDM
Research Data Management
FAIR

description: Eine neue Qualität hat die Datenbankarbeit für das Münzkabinett (Staatliche Museen zu Berlin) im Jahr 2017 gewonnen. Gefördert vom Bundesministerium für Bildung und Forschung beteiligt sich das Münzkabinett an einem Projekt zur Erschließung der Münzen in mittlerweile 40 beteiligten Universitätssammlungen. Die Ergebnisse werden auf einer eigenen Projektwebsite präsentiert: www.numid-verbund.de. Innerhalb dieses Verbundes hat das Münzkabinett als außeruniversitärer Partner drei Aufgaben: Es ist für die Prozessierung und den Export von mit IDs/LOD angereicherten benötigten Normdaten an die Projektpartner zuständig. Hierzu wurde im Jahr 2019 eine eigenes Portal freigeschaltet: https://ikmk.smb.museum/ndp. Das Münzkabinett koordiniert die Exporte der Daten aller IKMK-Partner, wofür die Formate LIDO und seit 2019 JSON zur Verfügung stehen, und es bietet Beratung und Hilfestellung bei der Objektdokumentation. Seit 2019 beteiligen sich alle numismatischen Digitalisierungsvorhaben am Prozess der Antragsstellung zur Schaffung einer Nationalen Forschungsdateninfrastruktur und konzentrieren sich dort auf das NFDI4objects-Konsortium https://www.nfdi4objects.net.
Branch Module for an Inductive Voltage Adder for Driving Kicker Magnets with a Short Circuit Termination
Creators: name: Ruf, J.
name: Barnes, M. J.
name: Dutheil, Y.
name: Kramer, T.
name: Sack, M.
Publisher: name: JACoW Publishing
Year: 2022

description: For driving kicker magnets terminated in a short circuit, a branch module for an inductive voltage adder has been designed and assembled. The module has been designed for a maximum charging voltage of 1.2 kV and an output current of 200 A considering the current doubling due to the short circuit termination. It features three consecutive modes of operation: energy injection, freewheeling, and energy extraction. Therefore, the topology of the branch module consists of two independently controlled SiC MOSFET switches and one diode switch. In order not to extend the field rise time of the kicker magnet significantly beyond the magnet fill time, the pulse must have a fast rise time. Hence, the switch for energy injection is driven by a gate boosting driver featuring a half bridge of GaN HEMTs and a driving voltage of 80 V. Measurements of the drain source voltage of this switch showed a fall time of 2.7 ns at a voltage of 600 V resulting in a voltage rise time of 5.4 ns at the output terminated with a resistive load. To meet both the rise time and current requirements, a parallel configuration of four SiC MOSFETs was implemented.
The effect of expert testimony on jurors' sensitivity to the effects of pre-identification evidence on eyewitness identification reliability
Creators: name: Kovera, Margaret Bull
name: Katzman, Jacqueline A
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: Please see our pre-registration in the "Summary" section. It is also attached as a Word document titled "Pre-Reg" for ease of viewing.
(502424) Mary Ann Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Assessing the Length based spawning potential ratio of Scalloped spiny lobster (P. homarus) in Hambantota district, Sri Lanka for sustainable fishery management
Creators: name: S.P.K. Liyanage, Upul
name: J.S, Jayanatha
name: W.A.L., Wickramasingha
name: Jayasooriya, S. P.
Publisher: name: figshare
Year: 2022
Subjects: subject: 70402 Aquatic Ecosystem Studies and Stock Assessment
subject: FOS: Agriculture, forestry and fisheries

description: Small-scale fisheries largely support food security in coastal communities as a source of income for livelihoods and their well-being. Socio-economic dimensions show that Scalloped spiny lobster (P. homarus) fishery in Hambantota district of Sri Lanka has become very popular but resources have declined due to various factors. Therefore, the current assessment provides information on spawning stocks and fisheries to inform existing management regulations. Length frequency data collected from major lobster landing sites in Hambantota district during 2007 to 2019 and Life History Data from published literature were used to estimate LBSPR. As lower (LRP) and upper reference points (URP); 0.3 and 0.4 considered. The calculated LBSPR for the years 2007, 2017, 2018, 2019 and 2020 were 0.22, 0.2, 0.27 and 0.21 respectively. The findings revealed that LBSPR was lower than LRP during the study period. The LRP during 2014 -2015; were 0.18, 0.17, respectively and fell below the threshold level of 0.2 (20%). Relative fishing pressure (F/M) >1 (1.39-2.76) for the respective period. The estimated LBSPR and F/M values ​​explain the overexploitation status of the stock. Strict enforcement of regulations with larger minimum legal size (70 mm) is recommended to improve the spawning stock required for the sustainability of fishery.
Stabilized Quasi-Newton Optimization of Noisy Potential Energy Surfaces
Creators: name: Schaefer, Bastian
name: Ghasemi, S. Alireza
name: Roy, Shantanu
name: Goedecker, Stefan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Optimizations of atomic positions belong to the most commonly performed tasks in electronic structure calculations. Many simulations like global minimum searches or characterizations of chemical reactions require performing hundreds or thousands of minimizations or saddle computations. To automatize these tasks, optimization algorithms must not only be efficient, but also very reliable. Unfortunately computational noise in forces and energies is inherent to electronic structure codes. This computational noise poses a sever problem to the stability of efficient optimization methods like the limited-memory Broyden-Fletcher-Goldfarb-Shanno algorithm. We here present a technique that allows obtaining significant curvature information of noisy potential energy surfaces. We use this technique to construct both, a stabilized quasi-Newton minimization method and a stabilized quasi-Newton saddle finding approach. We demonstrate with the help of benchmarks that both the minimizer and the saddle finding approach are superior to comparable existing methods.
Global surpluses of spin-base invariant fermions
Creators: name: Gies, Holger
name: Lippoldt, Stefan
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The spin-base invariant formalism of Dirac fermions in curved space maintains the essential symmetries of general covariance as well as similarity transformations of the Clifford algebra. We emphasize the advantages of the spin-base invariant formalism both from a conceptual as well as from a practical viewpoint. This suggests that local spin-base invariance should be added to the list of (effective) properties of (quantum) gravity theories. We find support for this viewpoint by the explicit construction of a global realization of the Clifford algebra on a 2-sphere which is impossible in the spin-base non-invariant vielbein formalism.
description: 6 pages
(502418) Caroline Maria Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
title: Traducción y validación al español del instrumento ID-PALL® para la IDentificación de necesidades de cuidados PALiativos en pacientes hospitalizados
Creators: name: Campos Pérez, Carlos Armando
Publisher: name: Tecnológico de Monterrey
publisherIdentifier: https://ror.org/03ayjn504
publisherIdentifierScheme: ROR
Year: 2023
Subjects: classificationCode: 3.3
subject: FOS: Health sciences

description: En las últimas décadas, la prevalencia de las enfermedades crónicas no transmisibles ha experimentado un notable aumento. Estas enfermedades son complejas y de progresión lenta, lo que ha transformado la perspectiva de la atención médica, destacando la importancia de los Cuidados Paliativos. A pesar de su relevancia, el acceso a los Cuidados Paliativos sigue siendo limitado, especialmente para pacientes sin cáncer, personas de edad avanzada y minorías culturales. Actualmente, no se realiza una distinción adecuada entre Cuidados Paliativos generales y especializados, lo que dificulta su prestación efectiva. Este estudio se enfoca en la adaptación cultural y validación del instrumento ID-PALL para evaluar la necesidad de Cuidados Paliativos en un hospital del noreste de México. La justificación principal radica en la necesidad de contar con un instrumento confiable y válido en español que permita identificar las necesidades de Cuidados Paliativos en entornos de habla hispana
Infrared Imaging Decision Aid Tools for Diagnosis of Necrotizing Enterocolitis
Creators: name: Shi, Yangyu
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: NEC detection
infrared thermal imaging
RGB-D sensing
thermal distribution analysis
image processing

description: Neonatal necrotizing enterocolitis (NEC) is one of the most severe digestive tract emergencies in neonates, involving bowel edema, hemorrhage, and necrosis, and can lead to serious complications including death. Since it is difficult to diagnose early, the morbidity and mortality rates are high due to severe complications in later stages of NEC and thus early detection is key to the treatment of NEC. In this thesis, a novel automatic image acquisition and analysis system combining a color and depth (RGB-D) sensor with an infrared (IR) camera is proposed for NEC diagnosis. A design for sensors configuration and a data acquisition process are introduced. A calibration method between the three cameras is described which aims to ensure frames synchronization and observation consistency among the color, depth, and IR images. Subsequently, complete segmentation procedures based on the original color, depth, and IR information are proposed to automatically separate the human body from the background, remove other interfering items, identify feature points on the human body joints, distinguish the human torso and limbs, and extract the abdominal region of interest. Finally, first-order statistical analysis is performed on thermal data collected over the entire extracted abdominal region to compare differences in thermal data distribution between different patient groups. Experimental validation in a real clinical environment is reported and shows encouraging results.
RS_Stress_Buffering_Preregistration
Creators: name: Kaiser, Roselinde
name: Fassett-Carman, Alyssa
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Life Sciences
subject: Neuroscience and Neurobiology
subject: Psychology
subject: FOS: Psychology
subject: Social and Behavioral Sciences

description: This preregistration contains an introduction section, methods, and analytic plan.
(502419) Emily Louise Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(502420) Jules Thomas Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Discovery of Large Molecular Gas Reservoirs in Post-Starburst Galaxies
Creators: name: French, K. Decker
name: Yang, Yujin
name: Zabludoff, Ann
name: Narayanan, Desika
name: Shirley, Yancy
name: Walter, Fabian
name: Smith, John-David
name: Tremonti, Christy A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Post-starburst (or "E+A") galaxies are characterized by low H$α$ emission and strong Balmer absorption, suggesting a recent starburst, but little current star formation. Although many of these galaxies show evidence of recent mergers, the mechanism for ending the starburst is not yet understood. To study the fate of the molecular gas, we search for CO (1-0) and (2-1) emission with the IRAM 30m and SMT 10m telescopes in 32 nearby ($0.01
description: Accepted to ApJ
A Cloud-based Continual Learning System for Road Sign Classification in Autonomous Driving
Creators: name: Davalas, Charalampos
name: Michail, Dimitrios
name: Diou, Christos
name: Varlamis, Iraklis
name: Tserpes, Konstantinos
Publisher: name: Zenodo
Year: 2022
Subjects: Machine Learning
Supervised Learning
Continual Learning
Catastrophic Forgetting

description: Artificial intelligence and deep learning have demonstrated highly promising results in challenging problems, such as autonomous or assisted driving. One challenge in the integration of these solutions in real-life applications, is that they often operate in a resource-constrained edge environment. Another important challenge is the ability of the AI system to adapt and expand its abilities in a constantly changing environment. Constant changes could potentially cause significant deterioration of a model's effectiveness, a phenomenon called Catastrophic Forgetting. In this paper, we propose a Continual Learning framework for efficient and continuous update of a road sign classification system for assisted or autonomous driving. Our proposition considers the limitations of edge computing and utilizes a cloud infrastructure. Test results show that the our proposition is capable of expanding an edge models knowledge in a stable manner.
Evaluating Permanent Strain and Surface Uplift in the Southern Cascadia Forearc
Creators: name: Owen Ryerson
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Vertical motions of the crust along convergent margins are driven primarily by elastic strain accumulation during interseismic periods, but may also record a component of permanent, non-elastic deformation of the overriding plate. Separating these components of modern strain fields is challenging, as rates of permanent strain accumulation that drive mountain building are difficult to directly measure. In the southern Cascadia forearc, preservation of a relict landscape in the Klamath and Siskiyou Mountains allows assessment of rates and patterns of deformation during Plio-Quaternary mountain building. This relict landscape, the “Klamath Peneplain” of Diller (1902), is preserved as low-relief interfluves and ridgetops that exhibit extensively weathered bedrock and regolith and, in some places, are capped with terrestrial and marine deposits. Near Crescent City, CA, these surfaces are inferred to have once been continuous with, and graded to, late Pliocene marine deposits.

To reconstruct the former extent of the low-relief landscape represented by these remnant surfaces, we conducted a GIS-based analysis of both mapped surface remnants (Irwin, 1997) and topographically continuous ridgelines. Observations of the surface remnants indicate the flat-topped ridges of the Peneplain relics grade downwards from the eastern extent of the Klamath mountains to the coast. We confirmed the presence of fluvial sand and gravel deposits on several of these surfaces; gravel deposits range from a few meters to tens of meters in thickness and are composed of cobble to boulder-size clasts. Clear imbrication and bedding suggest these were deposited in ancient fluvial channels atop the relict landscape. Deposits range from 400 – 900 meters above modern canyons and provide direct constraints on the magnitude of incision in the past few Myr. By differencing the present-day landscape and the reconstructed surface we estimated the minimum mass removal by erosion. We are currently using this result to model the flexural-isostatic response to quantify the magnitude and spatial pattern of rock uplift due to isostatic rebound during growth of the Coast Ranges. When tied to the Pliocene sea level, our results will constrain the relative contribution of permanent strain to modern-day vertical motion in this region of the Cascadia forearc.
Queer Asian American Zines and Imaginative Intimacy
Creators: name: Wright, Li-Anne
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: What exactly is queer intimacy? And why put queer Asian American zines in conversation with those discourses? To answer these questions, this thesis draws on queer studies, Asian American studies, queer of color critique, and archival research on queer Asian American zines and historical Asian American print. All three terms, “queer,” “intimacy,” and “Asian American,” lack boldly drawn boundaries; rather than pinning these definitions in place, this thesis leans into uncertainty. Queer intimacy evades static definition, instead capturing possibilities of nonnormative closeness. Queer Asian American zines are one method that uniquely creates queer intimacies; they create nontraditional networks of care and kinship, assemble queer heritages by creating intimacy across time and space (both past and future), and reimagine queerness and intimacy (particularly by de-hierarchizing romance or sex). This thesis concludes by combining theory with praxis through a 48-page perzine to queer the thesis form, create intimate space, and reflect on the complications of doing research on zines in a university setting.
(502416) Louis Charles Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Probing the effects of peptide secondary structure on peptide-polymer amphiphile morphological landscapes
Creators: name: Bucci, Kara
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022
Subjects: Chemistry

description: Peptide polymer amphiphiles (PPAs) are highly tunable hybrid materials that achieve complex, protein-like assembly landscapes by combining sequence-dependent properties of peptides with structural diversity of polymers. Despite their promise as functional biomimetic materials, determining how polymer and peptide properties simultaneously affect PPA self-assembly remains challenging. We have previously found that decreasing peptide hydrophilicity and increasing the polymer’s degree of polymerization increases the number of self-assembled vesicles in comparison to micelles and other morphologies.  To probe the role of peptide secondary structure on the resulting morphology of PPAs, we synthesized five peptides composed of an alpha helical peptide sequence with and without a hydrophilic spacer. Glycine5 (G5) and polyethylene glycol DP 8 (PEG8) spacers were used to vary composition and were placed at either the N- or C-terminus to vary their location. This peptide block was conjugated to an oligo(ethyl acrylate) polymer tail with an average degree of polymerization of five. Future work in this developing platform of biomimetic materials will focus on retaining functionality of biologically relevant alpha helical peptides in assembled PPA particles.
Implicações Do Uso De Diferentes Concentrações De Sulfato De Ferro Sobre As Características Colorimétricas Da Tinta Ferrogálica
Creators: name: Bárbara Sanches Aguiar
name: Camilla Henrique de Maia de Camargos
name: Márcia Almada
Publisher: name: Zenodo
Year: 2024

description: A tinta ferrogálica, introduzida no Brasil pelos portugueses no início do século XVI, era amplamente usada em documentos oficiais e manuscritos religiosos. A combinação de sulfato de ferro (FeSO4), isto é, íons de ferro (II), com taninos e ácido gálico, provenientes da galha, produz um complexo insolúvel de tonalidade preto-azulada, o galato de ferro (III). O objetivo deste trabalho é analisar como variações na proporção de FeSO₄ influenciam a cor e outras propriedades visuais da tinta ferrogálica. Inicialmente, realizou-se uma revisão de receitas históricas, identificando as proporções comuns entre FeSO4 e galha, observando-se a composição química, com destaque à quantificação de taninos e outros compostos relevantes. Na pesquisa experimental, prepararam-se amostras de tinta com diferentes concentrações de FeSO4. Conduziram-se análises colorimétricas preliminares, no espaço de cor CIELAB, para avaliar a intensidade de cor e estabilidade cromática ao longo do tempo. Os resultados mostraram que maiores concentrações de FeSO4 produzem tinta mais escura (menor luminosidade L*) e preta, enquanto menores concentrações geram tinta mais clara (maior luminosidade L*) e azulada (coordenada colorimétrica b* negativa). Os dados foram comparados com as referências para identificar padrões e diferenças significativas. A pesquisa sugere que compreender variações na formulação da tinta pode ajudar a identificar padrões e proporções que refletem às práticas históricas de fabricação no Brasil.
Learning Co-Sparse Analysis Operators with Separable Structures
Creators: name: Seibert, Matthias
name: Wörmann, Julian
name: Gribonval, Rémi
name: Kleinsteuber, Martin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In the co-sparse analysis model a set of filters is applied to a signal out of the signal class of interest yielding sparse filter responses. As such, it may serve as a prior in inverse problems, or for structural analysis of signals that are known to belong to the signal class. The more the model is adapted to the class, the more reliable it is for these purposes. The task of learning such operators for a given class is therefore a crucial problem. In many applications, it is also required that the filter responses are obtained in a timely manner, which can be achieved by filters with a separable structure. Not only can operators of this sort be efficiently used for computing the filter responses, but they also have the advantage that less training samples are required to obtain a reliable estimate of the operator. The first contribution of this work is to give theoretical evidence for this claim by providing an upper bound for the sample complexity of the learning process. The second is a stochastic gradient descent (SGD) method designed to learn an analysis operator with separable structures, which includes a novel and efficient step size selection rule. Numerical experiments are provided that link the sample complexity to the convergence speed of the SGD algorithm.
description: 11 pages double column, 4 figures, 3 tables
Student Achievement in the COVID-19 Pandemic Era: An Exploration into Racial and Ethnic Achievement Gaps in Chapel Hill-Carrboro City Schools.
Creators: name: Joy, Anupama
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: This thesis explores the impact of remote schooling necessitated by the COVID-19 pandemic on racial/ethnic achievement gaps in Chapel Hill-Carrboro City Schools. The research will provide insight into what policies or mechanisms may have contributed to any differential changes in achievement that may have been associated with remote learning. I use a mixed method approach to analyze the achievement of Black and Hispanic students as compared to that of White students between the 2018-2019 academic year and the 2020-2021 academic year. Proficiency rates of each student subgroup were derived from end-of-grade and end-of-course assessments in Reading and Math across grades 3 through 8, as well as English II and Math III, for the aforementioned years. Educator perceptions of student achievement were derived from a survey administered to CHCCS educators in order to better understand their experience with student learning during the pandemic, as well as explore mechanisms that may have facilitated differential changes in achievement across student groups. An analysis of proficiency rates found that academic achievement fell across all students. While this meant the narrowing of some Black-White achievement gaps, a majority of Hispanic-White achievement gaps saw widening, and relative to initial achievement, Hispanic and Black students fell much more than White students. The educator survey noted that while access to technological resources may not have been a large barrier to achievement, factors such as household support, lack of engagement, and inability to navigate technology could have explained greater drops in students of color. As school districts look to the future of technology-supported learning and achievement coming out of the pandemic, it is crucial for educators to look at outside factors, including educating students on how to use technology and ensuring methods of supervision to encourage engagement and promote equitable education.
(502417) Edgar Jerome Henderson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Implicações do uso de diferentes concentrações de sulfato de ferro sobre as características colorimétricas da tinta ferrogálica
Creators: name: Bárbara Sanches Aguiar
name: Camilla Henriques Maia de Camargos
name: Márcia Almada
Publisher: name: Zenodo
Year: 2024

description: A tinta ferrogálica, introduzida no Brasil pelos portugueses no início do século XVI, era amplamente usada em documentos oficiais e manuscritos religiosos. A combinação de sulfato de ferro (FeSO4), isto é, íons de ferro (II), com taninos e ácido gálico, provenientes da galha, produz um complexo insolúvel de tonalidade preto-azulada, o galato de ferro (III). O objetivo deste trabalho é analisar como variações na proporção de FeSO₄ influenciam a cor e outras propriedades visuais da tinta ferrogálica. Inicialmente, realizou-se uma revisão de receitas históricas, identificando as proporções comuns entre FeSO4 e galha, observando-se a composição química, com destaque à quantificação de taninos e outros compostos relevantes. Na pesquisa experimental, prepararam-se amostras de tinta com diferentes concentrações de FeSO4. Conduziram-se análises colorimétricas preliminares, no espaço de cor CIELAB, para avaliar a intensidade de cor e estabilidade cromática ao longo do tempo. Os resultados mostraram que maiores concentrações de FeSO4 produzem tinta mais escura (menor luminosidade L*) e preta, enquanto menores concentrações geram tinta mais clara (maior luminosidade L*) e azulada (coordenada colorimétrica b* negativa). Os dados foram comparados com as referências para identificar padrões e diferenças significativas. A pesquisa sugere que compreender variações na formulação da tinta pode ajudar a identificar padrões e proporções que refletem as práticas históricas de fabricação de materiais da escrita no Brasil.
Visualizing The Invisible: Using Microscopy to Observe Microbial Communities Over Time
Creators: name: Parker, Sierra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Microorganisms cycle carbon and other nutrients to produce key compounds necessary for all life; thus, it is important to understand how these processes will be affected by a changing environment. While molecular techniques have made critical insights into microbial ecology and biogeochemistry, they often examine only components of the ecosystem, such as certain size fractions or domains. Microscopy-based approaches offer a chance to examine the entire microbial community holistically and infer trophic interactions but are often laborious and low-throughput. We are developing high-throughput microscopy methods to systematically characterize and quantify all levels of the microbial ecosystem (viruses, bacteria, phytoplankton, zooplankton) with the goal of creating automated microscopy workflows which are accurate and comparable to other high-throughput plankton visualization technologies, such as Imaging FlowCytobot and FlowCam. These microscopy approaches were applied to understand how different sources of organic matter structure microbial community composition in the Pamlico Sound Estuary, NC, USA in September 2021. Water was collected and incubated under one of three light regimes (visible wavelengths, UV-only, and dark) for 30 days to examine microbial responses to different sources of organic matter (autochthonous, high organic matter photochemical degradation, and allochthonous, respectively). SYBR-stained and autofluorescent cells were imaged in z-stacks at multiple magnifications and in both DIC and fluorescent channels. Abundances and cell properties were determined using automated artificial intelligence techniques with supervised training and compared to manually determined counts and properties. Automated methods were moderately successful in reproducing trends in counts for single cells and chains (>1 µm) but were an order of magnitude fewer in counts than manual estimations. Methods were less successful at counting cells within aggregates and cells with low levels of fluorescence, especially as tanks accumulated debris over the course of the experiment. Using these automated methods, we were able to show that UV and especially visible light treatments slowed cell population decline compared to dark treatments. By combing these high-throughput microscopy methods with nutrient analyses, physiology rate measurements, and molecular techniques, this research is establishing a holistic understanding of microbial community structure and biogeochemical cycling in the estuarine environment.