cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
RepRapable Recyclebot
Creators: name: Pearce, Joshua
Publisher: name: Open Science Framework
Year: 2022

description: This project supports the paper: RepRapable Recyclebot: Open Source 3-D Printable Extruder for Converting Waste Plastic to 3-D Printing Filament Authors: Aubrey Woern, Joseph McCaslin, Adam Pringle, Joshua M. Pearce
Analyzing the thickness and velocity of the Sierra Negra sill
Creators: name: Foguel, Ashley
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Understanding where shallow low velocity zones function is important in
assessing their relationship to eruption history. In Sierra Negra, a basaltic
shield volcano in the Galapagos Islands[Delaney, 2006] that has experienced
extraordinary uplift, the results of a combination of InSAR and CGPS data
suggest the existence of a sill at roughly 2 km depth. I believe this sill is, in
part, responsible for the areas uplift [Chadwick, 2006] by allowing release of
strain through faulting. To find both the thickness and velocity of the sill,
as well as, shed light on its relationship to uplift, I created a model of the
sill with varying thickness and velocity. I found the best fit of the model to
the data to be a 6km thick sill with a velocity of 4.29km/sec.
Search for the electroweak production of supersymmetric particles in $\sqrt{s}$=8 TeV $pp$ collisions with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ATLAS experiment has performed extensive searches for the electroweak production of charginos, neutralinos and staus. This article summarizes and extends the search for electroweak supersymmetry with new analyses targeting scenarios not covered by previously published searches. New searches use vector-boson fusion production, initial-state radiation jets, and low-momentum lepton final states, as well as multivariate analysis techniques to improve the sensitivity to scenarios with small mass splittings and low-production cross-sections. Results are based on 20 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}$=8 TeV recorded with the ATLAS experiment at the Large Hadron Collider. No significant excess beyond Standard Model expectations is observed. The new and existing searches are combined and interpreted in terms of 95% confidence-level exclusion limits in simplified models, where a single production process and decay mode is assumed, as well as within phenomenological supersymmetric models.
description: 61 pages plus author list + cover pages (81 pages total), 22 figures, 23 tables, submitted to Phys. Rev. D., All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2014-05/
MS Gr. class. c. 6 1417
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1669 col. 32. Philodemus, De rhetorica 10
Drawing by Gennaro Casanova
Lellingeria calolepis Labiak, Fl. Neotrop. Monogr.
Creators: name: Smith, Alan R.
name: Kessler, Michael
name: León, Blanca
name: Almeida, Thaís Elias
name: Jiménez-Pérez, Iván
name: Lehnert, Marcus
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Polypodiaceae
Lellingeria
Lellingeria calolepis

description: Lellingeria calolepis Labiak, Fl. Neotrop. Monogr. 111: 32. 2013.
 Range: — Peru, Bolivia (CO).
 Ecology: —Rare, known from three Bolivian collections, including the type; epiphytic or epipetric in montane forests; 3150–3300 m.
 Notes: —Resembling Lellingeria major (Copel.) A.R.Sm. & R.C.Moran (which has sometimes been attributed a range to Peru and Bolivia, e.g, by Tryon & Stolze 1993, Smith et al. 1999), which is known from Colombia, Venezuela, and Ecuador (Labiak 2013), but differing from that in having narrower petioles (0.6–0.7 mm vs. 1–1.2 mm), longer segments (mostly 3–6 cm vs. <3 cm), and undulate segment margins (vs. straight, non-undulate).
description: Published as part of Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, pp. 448-450 in Phytotaxa 354 (1) on pages 448-450, DOI: 10.11646/phytotaxa.354.1.1, http://zenodo.org/record/13706197
Ab initio phase diagram of BaTiO$_3$ under epitaxial strain revisited
Creators: name: Grünebohm, Anna
name: Marathe, Madhura
name: Ederer, Claude
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We revisit the phase diagram of BaTiO$_3$ under biaxial strain using a first principles-based effective Hamiltonian approach. We show that, in addition to the tetragonal ($c$), quasi-rhombohedral ($r$), and quasi-orthorhombic ($aa$) ferroelectric phases, that have been discussed previously, there are temperature and strain regions, in particular under tensile strain, where the system decomposes into multi-domain structures. In such cases, the strained system, at least on a local level, recovers the same phase sequence as the unclamped bulk material. Furthermore, we extend these results from the case of "uniform" biaxial strain to the situation where the two in-plane lattice constants are strained differently and show that similar considerations apply in this case.
description: 5 pages, 3 figures
What is an "Enlightened" Citizen?: An Examination of the North Carolina Essential Standards and the C3 National Framework Standards for Civic Education
Creators: name: Ford, Evelyn Alexandra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Defining the nature of good citizenship has been a persisting challenge for scholars and
educators. This study defines differing conceptions of citizenship as objectives of citizenship
education and the extent to which these objectives are prioritized in two sets of standards – a set
of state standards and a set of standards from a national framework. In the present study, selected
civics-related standards from the North Carolina Essential Standards and the C3 National
Framework were coded based on seven discourse categories of citizenship education in order to
identify the extent to which these seven facets of citizenship education are prioritized in the
chosen standards. Results demonstrate the representation of a general variety of discourse
categories overall, but they also reveal a prevalence of a traditional conception of citizenship and
a nearly complete lack of a requirement of active student engagement. As a result, the examined
standards should be reevaluated with a focus on the citizenship education goal of creating
effective citizens and with recognition of the literature’s emphasis on active student participation
in civic learning.
Variability and dust filtration in the transition disk J160421.7-213028 observed in optical scattered light
Creators: name: Pinilla, P.
name: de Boer, J.
name: Benisty, M.
name: Juhász, A.
name: Ovelar, M. de Juan
name: Dominik, C.
name: Avenhaus, H.
name: Birnstiel, T.
name: Girard, J. H.
name: Huelamo, N.
name: Isella, A.
name: Milli, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. Some of transition disks show asymmetric structures in thermal sub-millimetre emission and optical scattered light. These structures can be the result of planet(s) or companions embedded in the disk. Aims. We aim to detect and analyse the scattered light of the transition disk J160421.7-213028, identify disk structures, and compare the results with previous observations of this disk at other wavelengths. Methods. We obtained and analysed new polarised intensity observations of the transition disk J160421.7-213028 with VLT/SPHERE using the visible light instrument ZIMPOL at $R'$ band (0.626$μ$m). We probe the disk gap down to a radius of confidence of 0.1'' (${\sim}15$ AU at 145 pc). We interpret the results in the context of dust evolution when planets interact with the parental disk. Results. We observe a gap from 0.1 to 0.3'' (${\sim}15$ to 40AU) and a bright annulus as previously detected by HiCIAO $H$ band observations at $1.65μ$m. The radial width of the annulus is around $40$AU, and its centre is at ${\sim}61$AU from the central star. The peak of the reflected light at 0.626$μ$m is located 20 AU inward of the cavity detected in the submillimetre. In addition, we detect a dip at a position angle of ${\sim}46.2 \pm 5.4^\circ$. A dip was also detected with HiCIAO, but located at ${\sim}85^\circ$. If the dip observed with HiCIAO is the same, this suggests an average dip rotation of ${\sim}12^\circ/$year, which is inconsistent with the local Keplerian angular velocity of $\sim$0.8$^\circ$/yr at $\sim$61AU. Conclusions. The spatial discrepancy in the radial emission in J160421.7-213028 at different wavelengths is consistent with dust filtration at the outer edge of a gap carved by a massive planet. The dip rotation can be interpreted by fast variability of the inner disk and/or the presence of a warp or circumplanetary material of a planet at ${\sim}9.6$ AU.
description: Accepted for publication in A&A Letters
The cell cycle and cell size influence the rates of global cellular translation and transcription in fission yeast.
Creators: name: Basier, Clovis
name: Nurse, Paul
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: Model organisms
Biochemistry & Proteomics
Synthetic Biology
Genetics & Genomics
Cell Biology
Cell Cycle & Chromosomes
Chemical Biology & High Throughput
Computational & Systems Biology

description: How the production of biomass is controlled as cells increase in size and proceed through the cell cycle events is important for understanding the regulation of global cellular growth. This has been studied for decades but has not yielded consistent results, probably due to perturbations induced by the synchronisation methods used in most previous studies. To avoid this problem, we have developed a system to analyse unperturbed exponentially growing populations of fission yeast cells. We generated thousands of fixed single-cell measurements of cell size, cell cycle stage and the levels of global cellular translation and transcription. We show that translation scales with size, and additionally, increases at late S-phase/early G2 and early in mitosis and decreases later in mitosis, suggesting that cell cycle controls are also operative over global cellular translation. Transcription increases with both size and the amount of DNA, suggesting that the level of transcription of a cell may be the result of a dynamic equilibrium between the number of RNA polymerases associating and disassociating from DNA.
MS Gr. class. c. 6 1418
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1669 Subscriptio. Philodemus, De rhetorica 10
Drawing by Gennaro Casanova
Viral Lies in the 2016 Presidential Election: a content analysis of 2016’s widespread “fake news” articles
Creators: name: Nunn, Sharon
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: The purpose of this study is to perform a content analysis of news articles based on or containing the inclusion of false information and find commonalities therein. The depths of the internet and its available information are seemingly infinite, with news, ideas, items for sale, music, literature, culture, and calls to action popping up on online forums or websites in one part of the world and spreading with lightening speed, ricocheting from one online platform to the next. The dissemination of false information comes with the territory of the internet, particularly when democratic societies’ ideals of free speech rights collide with an open forum in which everyone can have a voice and hide behind a veil of anonymity and the screens they look into daily. It is futile and short-sighted to claim fake news stories can be eliminated entirely, but the importance of mitigating the effects of viral news articles that contain false information is of the utmost importance to creating a well-informed populace that has the ability to make responsible decisions based on facts. Understanding the way in which these inaccurate stories are written and presented is a part of the first steps to tackling the much larger problem of internet misinformation.
Self-propulsion mechanism of active Janus particles in near-critical binary mixtures
Creators: name: Samin, Sela
name: van Roij, René
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Gold-capped Janus particles immersed in a near-critical binary mixture can be propelled using illumination. We employ a non-isothermal diffuse interface approach to investigate the self-propulsion mechanism of a single colloid. We attribute the motion to body forces at the edges of a micronsized droplet that nucleates around the particle. Thus, the often-used concept of a surface velocity cannot account for the self-propulsion. The particle's swimming velocity is related to the droplet shape and size, which is determined by a so-called critical isotherm. Two distinct swimming regimes exist, depending on whether the droplet partially or completely covers the particle. Interestingly, the dependence of the swimming velocity on temperature is non-monotonic in both regimes.
description: 5 pages, 3 figures
Determining the Fatty Acid Substrate Preferences of Long-Chain Acyl-CoA Synthetase Isoforms
Creators: name: Yechoor, Alekhya
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Before a fatty acid can be used in a cell, it must first be converted to its active form acyl-coenzyme A (acyl-CoA). This activation is catalyzed by a group of enzymes known as acyl-CoA synthetases, which use the energy of ATP to add a CoA group to the fatty acid to create fatty acyl-CoA. By controlling the synthesis of fatty acyl-CoAs, long-chain acyl-CoA synthetases (ACSL) can regulate fatty acid uptake and metabolism by selective activation of fatty acids. Activated fatty acids can be channeled to numerous downstream pathways after their conversion into acyl-CoA. The control over this fatty acid channeling towards different downstream pathways is not clear, but may vary depending on the isoform of the ACSL enzyme used to synthesize the acyl-CoA. Five different isoforms of ACSL (1,3,4,5,6) exist, each with varying roles in the body5. With each isoform, there is likely to be a distinct fatty acid preference and metabolic fate for the generated fatty acyl-CoA8,9,10,11. We expect each ACSL isoform to have differing chain-length and saturation preferences for its substrates. To better understand the substrate preferences of each isoform we used engineered expression vectors containing genes for each ACSL isoform along with a FLAG tag to produce purified recombinant enzyme. These expression vectors were transformed into E. coli and induced with IPTG to make recombinant protein. The FLAG-ACSL enzyme produced was affinity purified using a FLAG column and then used in an indirect spectrophotometric assay with different substrates to determine ACSL isoform substrate preference. The specific activity for each isoform was calculated with fatty acids of varying chain-length and saturation, to give quantitative values for the preferences of each isoform. Through troubleshooting and developing a protocol, we found that active isoforms were produced when induced at 25˚C for 16 hours. An indirect assay performed with purified ACSL5 showed activity with oleic acid and palmitic acid. ACSL5 showed a greater preference for palmitic acid, particularly at lower concentrations of purified protein. Due to time constrictions, and problems obtaining active ACSL isoforms, the protocol developed will have to be used in further studies to determine the substrate preferences of each ACSL isoform.
Lellingeria flagellipinnata M. Kessler & A. R. Sm., Organisms Diversity Evol.
Creators: name: Smith, Alan R.
name: Kessler, Michael
name: León, Blanca
name: Almeida, Thaís Elias
name: Jiménez-Pérez, Iván
name: Lehnert, Marcus
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Polypodiaceae
Lellingeria
Lellingeria flagellipinnata

description: Lellingeria flagellipinnata M.Kessler & A.R.Sm., Organisms Diversity Evol. 8(3): 169. 2008.
 Range: — Peru (Cusco: La Convención, Dist. Huayopata, 2050 m, Bonino et al. 1135, UC, and Bolivia (CO, LP, SC).
 Ecology: —Very common, perhaps the most common species in the genus in Bolivia; pendent epiphyte, in humid forests; (1700) 2450–3500 m.
 Notes: — Ceradenia comosa is superficially similar but has glandular paraphyses and long, reddish setae on the petioles.
description: Published as part of Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, pp. 448-450 in Phytotaxa 354 (1) on pages 448-450, DOI: 10.11646/phytotaxa.354.1.1, http://zenodo.org/record/13706197
Universality of Generalized Bunching and Efficient Assessment of Boson Sampling
Creators: name: Shchesnovich, V. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is found that identical bosons (fermions) show generalized bunching (antibunching) property in linear networks: The absolute maximum (minimum) of probability that all $N$ input particles are detected in a subset of $\mathcal{K}$ output modes of any nontrivial linear $M$-mode network is attained \textit{only} by completely indistinguishable bosons (fermions). For fermions $\mathcal{K}$ is arbitrary, for bosons it is either ($i$) arbitrary for only classically correlated bosons or ($ii$) satisfies $\mathcal{K}\ge N$ (or $\mathcal{K}=1$) for arbitrary input states of $N$ particles. The generalized bunching allows to certify in a \textit{polynomial} in $N$ number of runs that a physical device realizing Boson Sampling with \textit{an arbitrary} network operates in the regime of full quantum coherence compatible \textit{only} with completely indistinguishable bosons. The protocol needs \textit{only polynomial} classical computations for the standard Boson Sampling, whereas an \textit{analytic formula} is available for the scattershot version.
description: Accepted to Physical Review Letters, 5 pages, with 9 of the supplementing appendix, 2 figures
Best of SIDFEx applications, with a focus on deformation forecasts
Creators: name: Ludwig, Valentin
name: Goessling, Helge
name: SIDFEx Team
Publisher: name: Zenodo
Year: 2023
Subjects: Sea-ice deformation
Sea-ice drift
Forecasts

description: Topic: Presentation of the Sea Ice Drift Forecast Experiment (SIDFEx). Content: I first gave an introduction on the rationale behind and setup of SIDFEx, continued with a selection of applications and then focused on sea-ice deformation forecasts no varying spatial scales. Duration: 25 minutes. Occasion: 11th workshop of the International Ice Chart Working Group on Data Assimilation (IICWG-DA). Date: March 23, 2023 in Oslo
Probing Milky Way's hot gas halo density distribution using the dispersion measure of pulsars
Creators: name: Nugaev, Emin Ya.
name: Rubtsov, Grigory I.
name: Zhezher, Yana V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A number of recent studies indicates a significant amount of ionized gas in a form of the hot gas halo around the Milky Way. The halo extends over the region of 100 kpc and may be acountable for the missing baryon mass. In this paper we calculate the contribution of the proposed halo to the dispersion measure (DM) of the pulsars. The Navarro, Frenk & White (NFW), Maller & Bullock (MB) and Feldmann, Hooper & Gnedin (FHG) density distibutions are considered for the gas halo. The data set includes pulsars with the distance known independently from the DM, e.g. pulsars in globular clusters, LMC, SMC and pulsars with known parallax. The results exclude the NFW distribution for the hot gas, while the more realistic MB and FHG models are compatible with the observed dispersion measure.
description: 7 pages, 2 figures
NBA Twitter: A 'Slam Dunk' as a Public Relations Tool for Sports Organizations
Creators: name: Engellenner, Margaret
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The rise of social media coupled with advancements in technology and communication
have been altering the way in which organizations manage their public relations and
communicate with their stakeholders and audiences. As a result, organizations have increasingly
become compelled to communicate with stakeholders via new media channels - such as social
media - rather than traditional sources - like television, radio, newspapers, and magazines - to
reach and capture the attention of the largest number of stakeholders as possible. Advancements
in technology and communication have consequently altered the expectations of stakeholders:
Concise, creative, and quickly communicated messages have become an essential practice of
successful public relations. Sports organizations, like the NBA, have been paving the way by
embracing these new innovative means of communication. This study coded a sample of tweets
sent from the official Twitter account of the NBA along with six official accounts of its
franchises to identify types of content they shared, and how their Twitter efforts reflected
characteristics of public relations to build relationships with their stakeholders. The results of this
study indicate that the NBA and its franchises most frequently tweeted out content for the
purposes of entertainment and information sharing, and those types of tweets also received the
highest levels of engagement and interaction.
Lellingeria jimenezii Labiak, Fl. Neotrop. Monogr.
Creators: name: Smith, Alan R.
name: Kessler, Michael
name: León, Blanca
name: Almeida, Thaís Elias
name: Jiménez-Pérez, Iván
name: Lehnert, Marcus
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Polypodiaceae
Lellingeria
Lellingeria jimenezii

description: Lellingeria jimenezii Labiak, Fl. Neotrop. Monogr. 111: 53. 2013.
 Range: —Endemic to Bolivia (LP).
 Ecology: —Rare, known from four collections; epiphytic in montane rain forests; 800–1950 m.
 Notes: —Similar to Lellingeria oreophila (Maxon) A.R.Sm. & R.C.Moran, endemic to Colombia. Lellingeria jimenezii differs from that by its smaller, reddish brown, lanceolate rhizome scales 1–2 mm long (vs. 4–6 mm), subcoriaceous blades, dark sclerenchyma visible on the rachises abaxially, 8–12 pairs of sori per segment (vs. 6–8 pairs), and sori not restricted to the distal portion of the segments (Labiak 2013). It also has dorsiventral, short-creeping rhizomes; many species of Lellingeria have suberect to erect, radially symmetric rhizomes.
description: Published as part of Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, pp. 448-450 in Phytotaxa 354 (1) on pages 448-450, DOI: 10.11646/phytotaxa.354.1.1, http://zenodo.org/record/13706197
JUNO and Neutrinoless Double Beta Decay
Creators: name: Ge, Shao-Feng
name: Rodejohann, Werner
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the impact of the precision determination of oscillation parameters in the JUNO experiment on half-life predictions for neutrinoless double beta decay. We show that the solar neutrino mixing angle can be measured by JUNO with below 1% uncertainty. This implies in particular that the minimal value of the effective mass in the inverted mass ordering will be known essentially without uncertainty. We demonstrate that this reduces the range of half-life predictions in order to test this value by a factor of two. The remaining uncertainty is caused by nuclear matrix elements. This has important consequences for future double beta decay experiments that aim at ruling out the inverted mass ordering or the Majorana nature of neutrinos.
description: 11 pages, 7 figures
Multitroph: ecological speculation and the diagram
Creators: name: Hayes, Tracie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: I started out as a biologist at age 10. I would collect things outside, copy down pages and pages of field guide information into my own notebooks, take photos of all the wildflowers I would see in the national parks. Documentation was key: everything I saw on my family’s trip to Yellowstone had to be written down, photographed, and drawn. I was collecting, all the time. My honors project has been a continuation of this practice. My art combines observation (and with this, wonder), and the gathering and displaying of information. In this body of work, I am interested in the ecological address (the place and its influencing geology), the process of ecology, and the communication of scientific findings. I am interested in considering my own ecological research while creating work, but also drawing from systems of methodology and data presentation that are commonly used in ecology.
MS Gr. class. c. 6 1421
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1670 Oxon. 1421. Philodemus, De providentia
Drawing by G.B. Malesci
Supplementary document for Sensitivity of visible range multi-wavelength algorithms for retinal tissue oximetry to acquisition parameters - 6480085.pdf
Creators: name: Akitegetse, Cleophace
name: Poirier, Jasmine
name: Sauvageau, Dominic
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1
MS Gr. class. c. 6 1422
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1670 Oxon. 1422. Philodemus, De providentia
Drawing by G.B. Malesci
Degeneracy in Maximal Clique Decomposition for Semidefinite Programs
Creators: name: Raghunathan, Arvind U.
name: Knyazev, Andrew V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C22, 49M27, 90C51

description: Exploiting sparsity in Semidefinite Programs (SDP) is critical to solving large-scale problems. The chordal completion based maximal clique decomposition is the preferred approach for exploiting sparsity in SDPs. In this paper, we show that the maximal clique-based SDP decomposition is primal degenerate when the SDP has a low rank solution. We also derive conditions under which the multipliers in the maximal clique-based SDP formulation is not unique. Numerical experiments demonstrate that the SDP decomposition results in the schur-complement matrix of the Interior Point Method (IPM) having higher condition number than for the original SDP formulation.
description: 15 pages
Music in the Real World:  Live Music Retrieval and the Limitations Thereof
Creators: name: Burch, Ryan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Music is everywhere around us. Cliché, yes, but music has found a way to infiltrate nearly every field of study known to man. Writers and authors include musical references to give context to novels and works of literature. Physicists study frequencies of music and sound to determine their effects on animals and humans. The field of Information Science is no different when it comes to its relationship with music. Music Information Retrieval (MIR), a subset of Information and Library Science, was founded in 2000 to gain a better understanding of the information music contains and how this can best be extracted for human use (Byrd, Fingerhunt, 2002). MIR deals with both the metadata of music (band, lyrics, album name, etc.) and actual content of music (chord structure, melodic design, and rhythmic analysis). As the title suggests, a large part of MIR deals with retrieval, which is done by both humans and machines. Examples of retrieval include the applications of SoundHound and Shazam, which make use of audio fingerprinting technology in order to query databases that contain songs in order for a user to identify a song quickly and efficiently.
As stated above, the field of MIR is relatively new with respect to academia, with less than 15 years worth of research and information available. Although the term itself was originally coined in a lecture in the late 1960s, the field itself did not receive formal recognition until a much later time. Because of this, many areas of MIR have not been studied to their fullest extent. One of these areas, content-based music retrieval in a live environment, has seen painfully little research. It is this area I wish to study more in-depth by posing the following
questions: How successful are current content-based music identification systems at identifying jazz songs performed live? In cases where they fail, what are the possible causes of those failures? What can be done to improve the effectiveness of these applications and methods and what does this imply for future research? As I stated before, the lack of research done for live music applications leads me to believe that more should be done. The need for identification of tracks occurs more often in live venues, like concerts, more so than studio recordings How many times have you heard from friends or neighbors, “What song is this? Do you know this one?” By looking at identification methods and their limitations, research can address these issues and hopefully design more efficient applications.
MS Gr. class. c. 6 1423
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1670 Oxon. 1423. Philodemus, De providentia
Drawing by G.B. Malesci
Quantification of Quantum Entanglement in a Multiparticle System of Two-Level Atoms Interacting with a Squeezed Vacuum State of the Radiation Field
Creators: name: Deb, Ram Narayan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We quantify multiparticle quantum entanglement in a system of N two-level atoms interacting with a squeezed vacuum state of the electromagnetic field. We calculate the amount of quantum entanglement present among one hundred such two-level atoms and also show the variation of that entanglement with the radiation field parameter. We show the continuous variation of the amount of quantum entanglement as we continuously increase the number of atoms from N=2 to N=100. We also discuss that the multiparticle correlations among the N two-level atoms are made up of all possible bipartite correlations among the N atoms.
description: 11 pages, 3 figures, The final publication is available at link.springer.com. International Journal of Theoretical Physics, Published online: 03 March 2016
MS Gr. class. c. 6 1424
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1670 Oxon. 1424. Philodemus, De providentia
Drawing by G.B. Malesci
The quantum optical description of a Fabry-Perot interferometer and the prediction of an antibunching effect
Creators: name: Ataman, Stefan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we describe a Fabry-Perot interferometer in the language of quantum optics. We go on to model the Fabry-Perot interferometer as a beam splitter having frequency dependent transmissivity and reflectivity coefficients. The antibunching, a totally non-classical effect, is to be expected if one excites this interferometer with carefully frequency-selected single photons arriving simultaneously from opposite directions. Contrary to a normal beam splitter, even slightly different frequency single photons should be able to show this effect, as long as the photon counters are not frequency selective.
description: 7 pages, 7 figures, to appear in EPJD
Power Transitions and Hegemonic Longevity
Creators: name: Cooley, Brendan M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Theories of hegemonic stability and power transition largely neglect the role of weaker
third parties in sustaining hegemony or producing systemic change. This study develops a
three actor game theoretic model of power transition and hegemony, in which a declining
hegemon and a rising challenger compete for the loyalty of a third state. It finds the threat
of preventive war can deter challenges to a hegemon’s portfolio of subordinate states,
providing an alternative explanation for both hegemonic longevity and systemic war. The
model’s theoretical findings are illustrated and evaluated against Britain’s relative decline
vis-à-vis the United States and Germany in the late 19th and early 20th centuries.
Tunneling conductance in half-metal/conical magnet/superconductor junctions in the adiabatic and non-adiabatic regime: self-consistent calculations
Creators: name: Wójcik, P.
name: Rzeszotarski, B.
name: Zegrodnik, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The tunneling conductance in the half-metal/conical magnet/superconductor (HM/CM/SC) is investigated by the use of the combined Blonder-Tinkham-Klapwijk (BTK) formalism and the Bogoliubov-de Gennes (BdG) equations. We show that the conductance calculated self-consistently differs significantly from the one calculated in the non-self-consistent framework. The use of the self-consistent procedure ensures that the charge conservation is satisfied. Due to the spin band separation in the HM, the conductance in the subgap region is mainly determined by the anomalous Andreev reflection the probability of which strongly depends on the spin transmission in the CM layer. We show that the spin of electron injected from the HM can be transmitted through the CM to the SC adiabatically or non-adiabatically depending on the period of the exchange field modulation. We find that the conductance in the subgap region oscillates as a function of the CM layer thickness wherein the oscillations transform from irregular, in the non-adiabatic regime, to regular in the adiabatic case. In the non-adiabatic regime the decrease of the exchange field amplitude in the CM leads to the emergence of the conductance peak for one particular CM thickness in agreement with experiment [J.W.A Robinson, J. D. S Witt and M. G. Blamire, Science 329, 5987]. For both transport regimes the conductance is analyzed over a broad range of parameters determining the spiral magnetization in the CM.
description: 12 pages, 16 figures
Detecting compact galactic binaries using a hybrid swarm-based algorithm
Creators: name: Bouffanais, Yann
name: Porter, Edward K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Compact binaries in our galaxy are expected to be one of the main sources of gravitational waves for the future eLISA mission. During the mission lifetime, many thousands of galactic binaries should be individually resolved. However, the identification of the sources, and the extraction of the signal parameters in a noisy environment are real challenges for data analysis. So far, stochastic searches have proven to be the most successful for this problem. In this work we present the first application of a swarm-based algorithm combining Particle Swarm Optimization and Differential Evolution. These algorithms have been shown to converge faster to global solutions on complicated likelihood surfaces than other stochastic methods. We first demonstrate the effectiveness of the algorithm for the case of a single binary in a 1 mHz search bandwidth. This interesting problem gave the algorithm plenty of opportunity to fail, as it can be easier to find a strong noise peak rather than the signal itself. After a successful detection of a fictitious low-frequency source, as well as the verification binary RXJ0806.3+1527, we then applied the algorithm to the detection of multiple binaries, over different search bandwidths, in the cases of low and mild source confusion. In all cases, we show that we can successfully identify the sources, and recover the true parameters within a 99\% credible interval.
description: 19 pages, 5 figures
Lellingeria pseudotenuicula Labiak, Fl. Neotrop. Monogr.
Creators: name: Smith, Alan R.
name: Kessler, Michael
name: León, Blanca
name: Almeida, Thaís Elias
name: Jiménez-Pérez, Iván
name: Lehnert, Marcus
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Polypodiaceae
Lellingeria
Lellingeria pseudotenuicula

description: Lellingeria pseudotenuicula Labiak, Fl. Neotrop. Monogr. 111: 84(–85). 2013.
 Range: —Endemic to Bolivia (CH, SC, TA).
 Ecology: —Rare, known from four Bolivian collections; epiphytic in montane rain forests; 1800–2300 m.
 Notes: —Similar to L. tenuicula (Fée) A.R.Sm. & R.C.Moran, from the Lesser Antilles, but differing in having obovate blades (vs. lanceolate) and glabrous rachises adaxially (vs. hirsute). Lellingeria pseudotenuicula also has generally smaller, more delicate blades. From L. ciliolepis, L. pseudotenuicula differs in having shorter creeping rhizomes and obovate (vs. linear-lanceolate) blades.
description: Published as part of Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, pp. 448-450 in Phytotaxa 354 (1) on pages 448-450, DOI: 10.11646/phytotaxa.354.1.1, http://zenodo.org/record/13706197
Multiple magneto-phonon resonances in graphene
Creators: name: Basko, D. M.
name: Leszczynski, P.
name: Faugeras, C.
name: Binder, J.
name: Nicolet, A. A. L.
name: Kossacki, P.
name: Orlita, M.
name: Potemski, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Our low-temperature magneto-Raman scattering measurements performed on graphene-like locations on the surface of bulk graphite reveal a new series of magneto-phonon resonances involving both K-point and Gamma-point phonons. In particular, we observe for the first time the resonant splitting of three crossing excitation branches. We give a detailed theoretical analysis of these new resonances. Our results highlight the role of combined excitations and the importance of multi-phonon processes (from both K and Gamma points) for the relaxation of hot carriers in graphene.
description: 20 pages, 11 figures
Higher Order Statistics in Switched Diversity Systems
Creators: name: Sauco-Gallardo, Adrián
name: Fernández-Plazaola, Unai
name: Díez, Luis
name: Martos-Naya, Eduardo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We analyze the level crossing rate (LCR) and the average fade duration of the output signal-to-noise-ratio (SNR) in generalized switched diversity systems. By using a common approach, we study these higher order statistics for two different kinds of configurations: (1) Colocated diversity, i.e. receiver equipped with multiple antennas, and (2) Distributed diversity, i.e. relaying link with multiple single-antenna threshold-based decode-and-forward (DF) relays. In both cases, we consider the switched diversity combining strategies Selection Combining and Switch \& Stay Combining (SSC). Whenever using threshold-based techniques such as DF or SSC, the output SNR is a discontinuous random process and hence classic Rice approach to calculate the LCR is not applicable. Thus, we use an alternative formulation in terms of the one and two-dimensional cumulative distribution functions of the output SNR. Our results are general, and hold for any arbitrary distribution of fading at the different diversity branches. Moreover, we develop a general asymptotic framework to calculate these higher order statistics in high mean SNR environments which only needs of the univariate probability density function.
Structure and magnetism in $\rm LaCoO_3$
Creators: name: Belanger, D. P.
name: Keiber, T.
name: Bridges, F.
name: Durand, A. M.
name: Mehta, A.
name: Zheng, H.
name: Mitchell, J. F.
name: Borzenets, V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The temperature dependence of the hexagonal lattice parameter $c$ of single crystal $\rm LaCoO_3$ (LCO) with $H=0$ and $800$Oe, as well as LCO bulk powders with $H=0$, was measured using high-resolution x-ray scattering near the transition temperature $T_o\approx 35$K. The change of $c(T)$ is well characterized by a power law in $T-T_o$ for $T>T_o$ and by a temperature independent constant for $T
description: 6 pages, 5 figures, 2 tables
Probing a scattering resonance in Rydberg molecules with a Bose-Einstein condensate
Creators: name: Schlagmüller, Michael
name: Liebisch, Tara Cubel
name: Nguyen, Huan
name: Lochead, Graham
name: Engel, Felix
name: Böttcher, Fabian
name: Westphal, Karl M.
name: Kleinbach, Kathrin S.
name: Löw, Robert
name: Hofferberth, Sebastian
name: Pfau, Tilman
name: Pérez-Ríos, Jesús
name: Greene, Chris H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present spectroscopy of a single Rydberg atom excited within a Bose-Einstein condensate. We not only observe the density shift as discovered by Amaldi and Segre in 1934, but a line shape which changes with the principal quantum number n. The line broadening depends precisely on the interaction potential energy curves of the Rydberg electron with the neutral atom perturbers. In particular, we show the relevance of the triplet p-wave shape resonance in the Rydberg electron-Rb(5S) scattering, which significantly modifies the interaction potential. With a peak density of 5.5x10^14 cm^-3, and therefore an inter-particle spacing of 1300 a0 within a Bose-Einstein condensate, the potential energy curves can be probed at these Rydberg ion - neutral atom separations. We present a simple microscopic model for the spectroscopic line shape by treating the atoms overlapped with the Rydberg orbit as zero-velocity, uncorrelated, point-like particles, with binding energies associated with their ion-neutral separation, and good agreement is found.
description: 5 pages, 4 figures
Melpomene albicans Lehnert, Amer. Fern J.
Creators: name: Smith, Alan R.
name: Kessler, Michael
name: León, Blanca
name: Almeida, Thaís Elias
name: Jiménez-Pérez, Iván
name: Lehnert, Marcus
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Polypodiaceae
Melpomene
Melpomene albicans

description: Melpomene albicans Lehnert, Amer. Fern J. 98(4): 216(–219), f. 1, 7A. 2009.
 Range: — Bolivia (CO, LP, SC), southeastern Brazil.
 Ecology: —Relatively common; epiphytic in wet montane forests and cloud forests; 2500–3400 m.
 Notes: —Distinctive in having a whitish layer abaxially that obscures the costae. The chemical nature of this layer is unknown but turns yellow when dried and dissolves when the plant is treated with alcohol.
description: Published as part of Smith, Alan R., Kessler, Michael, León, Blanca, Almeida, Thaís Elias, Jiménez-Pérez, Iván & Lehnert, Marcus, 2018, Prodromus of a fern flora for Bolivia. XL. Polypodiaceae, pp. 448-450 in Phytotaxa 354 (1) on pages 448-450, DOI: 10.11646/phytotaxa.354.1.1, http://zenodo.org/record/13706197
An entropy based clustering order parameter for finite ensembles of oscillators
Creators: name: Nordenfelt, Anders
Publisher: name: arXiv
Year: 2015
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Based on the entropy concept, we define a new clustering order parameter $c$ feasible for finite systems of interacting oscillators. Unlike the generalized synchronization order parameters of the Kuramoto type, this new order parameter singles out the splay state as the unique state with $c = 0$, thus yielding a positive value whenever there is some kind of cluster formation in the system. It is therefore proposed to be monitored alongside the Kuramoto order parameters as a means to quantify the overall amount of clustering in the system.
Bethe's Quantum Numbers And Rigged Configurations
Creators: name: Kirillov, Anatol N.
name: Sakamoto, Reiho
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a method to determine the quantum numbers, which we call the rigged configurations, for the solutions to the Bethe ansatz equations for the spin-1/2 isotropic Heisenberg model under the periodic boundary condition. Our method is based on the observation that the sums of Bethe's quantum numbers within each string behave particularly nicely. We confirm our procedure for all solutions for length 12 chain (totally 923 solutions).
description: 16 pages. Supplementary tables are included in the source file. (v2) New example at pages 8--9. (v3) Final version with minor revision
Spinor Pairs and the Concentration Principle for Dirac operators
Creators: name: Maridakis, Manousos
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study perturbed Dirac operators of the form $ D_s= D + s{\cal A} :Γ(E)\rightarrow Γ(F)$ over a compact Riemannian manifold $(X, g)$ with symbol $c$ and special bundle maps ${\cal A} : E\rightarrow F$ for $s>>0$. Under a simple algebraic criterion on the pair $(c, {\cal A})$, solutions of $D_sψ=0$ concentrate as $s\to\infty$ around the singular set $Z_\A\subset X$ of ${\cal A}$. We give many examples, the most interesting ones arising from a general ``spinor pair'' construction.
Exploring the mechanism that regulates chromatin mobility upon double-strand break
Creators: name: Barry, Raymond Mario
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Cells must maintain genomic integrity despite constant exposure to sources of DNA
damage. The most genotoxic form of damage is the double-strand break and its improper
repair causes genomic instability and cancer predisposition. An undamaged homologous
sequence can serve as the template for repair of a double-strand break, and increased
mobility may be required to facilitate an efficient homology search. Chromatin exhibits
increased mobility upon DNA damage, but the physical mechanism remains unknown.
To explore this mechanism, we employ in vivo single-particle tracking of tagged loci in
haploid yeast. We find that cytoskeletal actin contributes to increased chromatin and
nuclear dynamics upon damage, reflecting its role in meiosis to promote homolog pairing
by nuclear mixing. This presents a new model for increasing chromatin mobility to
facilitate homology search in the DNA damage response.