cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the One-Shot Zero-Error Classical Capacity of Classical-Quantum Channels Assisted by Quantum Non-signalling Correlations
Creators: name: Lai, Ching-Yi
name: Duan, Runyao
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Duan and Winter studied the one-shot zero-error classical capacity of a quantum channel assisted by quantum non-signalling correlations, and formulated this problem as a semidefinite program depending only on the Kraus operator space of the channel. For the class of classical-quantum channels, they showed that the asymptotic zero-error classical capacity assisted by quantum non-signalling correlations, minimized over all classical-quantum channels with a confusability graph $G$, is exactly $\log \vartheta(G)$, where $\vartheta(G)$ is the celebrated Lovász theta function. In this paper, we show that the one-shot capacity for a classical-quantum channel, induced from a circulant graph $G$ defined by equal-sized cyclotomic cosets, is $\log \lfloor \vartheta(G) \rfloor$, which further implies that its asymptotic capacity is $\log \vartheta(G)$. This type of graphs include the cycle graphs of odd length, the Paley graphs of prime vertices, and the cubit residue graphs of prime vertices. Examples of other graphs are also discussed. This endows the Lovász $θ$ function with a more straightforward operational meaning.
description: 13 pages, 6 figures
Additional file 4 of Role of oxidative stress and inflammation-related signaling pathways in doxorubicin-induced cardiomyopathy
Creators: name: Shi, Saixian
name: Chen, Ye
name: Luo, Zhijian
name: Nie, Guojun
name: Dai, Yan
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3. Table S3: Some drugs that exert cardioprotective effects by acting on the NOS signaling.
Efficient Sampling and Feature Selection in Whole Sentence Maximum Entropy Language Models
Creators: name: Chen, Stanley F
name: Rosenfeld, Roni
Publisher: name: Figshare
Year: 2018
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Conditional Maximum Entropy models have been successfully applied to estimating language model probabilities of the form p(wjh), but are often too demanding computationally. Furthermore, the conditional framework does not lend itself to expressing global sentential phenomena. We have recently introduced a non-conditional Maximum Entropy language model which directly models the probability of an entire sentence or utterance. The model treats each utterance as a "bag of features," where features are arbitrary computable properties of the sentence. Using the model is computationally straightforward since it does not require normalization. Training the model requires efficient sampling of sentences from an exponential distribution. In this paper, we further develop the model and demonstrate its feasibility and power. We compare the efficiency of several sampling techniques, implement smoothing to accommodate rare features, and suggest an efficient algorithm for improving convergence rate
New calculation of antiproton production by cosmic ray protons and nuclei
Creators: name: Kachelriess, Michael
name: Moskalenko, Igor V.
name: Ostapchenko, Sergey S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A dramatic increase in the accuracy and statistics of space-borne cosmic ray (CR) measurements has yielded several breakthroughs over the last several years. The most puzzling is the rise in the positron fraction above ~10 GeV over the predictions of the propagation models assuming pure secondary production. The accuracy of the antiproton production cross section is critical for astrophysical applications and searches for new physics since antiprotons in CRs seem to hold the keys to many puzzles including the origin of those excess positrons. However, model calculations of antiproton production in CR interactions with interstellar gas are often employing parameterizations that are out of date or are using outdated physical concepts. That may lead to an incorrect interpretation of antiproton data which could have broad consequences for other areas of astrophysics. In this work, we calculate antiproton production in pp-, pA-, and AA-interactions using EPOS-LHC and QGSJET-II-04, two of the most advanced Monte Carlo (MC) generators tuned to numerous accelerator data including those from the Large Hadron Collider (LHC). We show that the antiproton yields obtained with these MC generators differ by up to an order of magnitude from yields of parameterizations commonly used in astrophysics.
description: 16 pages (emulateapj style), 18 figures, 2 tables; The Astrophysical Journal, in press
Additional file 6 of Role of oxidative stress and inflammation-related signaling pathways in doxorubicin-induced cardiomyopathy
Creators: name: Shi, Saixian
name: Chen, Ye
name: Luo, Zhijian
name: Nie, Guojun
name: Dai, Yan
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 5. Table S5: Some drugs that exert cardioprotective effects by acting on the NLRP3 signaling.
Height pairings on orthogonal Shimura varieties
Creators: name: Andreatta, Fabrizio
name: Goren, Eyal Z.
name: Howard, Benjamin
name: Pera, Keerthi Madapusi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $M$ be the Shimura variety associated to the group of spinor similitudes of a quadratic space over $\mathbb{Q}$ of signature $(n,2)$. We prove a conjecture of Bruinier and Yang, relating the arithmetic intersection multiplicities of special divisors and CM points on $M$ to the central derivatives of certain $L$-functions. Each such $L$-function is the Rankin-Selberg convolution associated with a cusp form of half-integral weight $n/2 +1 $, and the weight $n/2$ theta series of a positive definite quadratic space of rank $n$. When $n=1$ the Shimura variety $M$ is a classical quaternionic Shimura curve, and our result is a variant of the Gross-Zagier theorem on heights of Heegner points.
description: Final version. To appear in Compos. Math
Additional file 8 of Role of oxidative stress and inflammation-related signaling pathways in doxorubicin-induced cardiomyopathy
Creators: name: Shi, Saixian
name: Chen, Ye
name: Luo, Zhijian
name: Nie, Guojun
name: Dai, Yan
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 7. Table S7: Acting on some drug targets mitigates the oxidative stress and inflammation in DOX-induced cardiotoxicity.
Detecting DNA Damage: The Synthesis of New Aldehyde Reactive Probes for the Quantitation of Apurinic/Apyrimidinic Sites
Creators: name: Ridpath, John R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Apurinic/apyrimidinic (abasic) sites are some of the most common lesions found in DNA. They are postulated to be intermediates of mutagenicity and carcinogenicity. Each human genome can have as many as 104 abasic sites per day. It is therefore important to be able to quantitate the number of these sites. Abasic sites are quantitated by an aldehyde reactive probe (ARP) assay highly specific for the aldehyde group of the ring-opened d-ribose. This assay is based on formation of a Schiff base adduct of a hydroxylamine on the probe end of the aldehyde. The purpose of this project is to synthesize new ARPs that enhance reactivity without loss of specificity. A two-step synthetic scheme was devised to give a compound which replaces the hydroxylamine group with a hydrazino group expected to be more reactive. A long-chain ARP containing a polyethylene glycol moiety was also synthesized.
Interrogation of telomerase structure and function with telomeric DNA
Creators: name: Moon, Ian K.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The studies described in this dissertation are directed toward understanding one of the components of a mechanism that cancer cells use to escape apoptosis and maintain genetic stability, resulting in cellular immortalization. Telomeres are nucleoprotein structures at the ends of eukaryotic chromosomes that are essential for safeguarding genomic stability and in regulating the lifespan of cellular replication. Telomerase is a specialized ribonucleoprotein complex that functions as a reverse transcriptase to extend the 3' end of the telomere, resulting in telomere conservation, and thus chromosomal stabilization. In greater than 85% of all cancer cells, telomerase is upregulated to rescue eroded telomeres and stabilize chromosomes, resulting in cellular immortalization. Because most somatic cells do not express detectable levels of telomerase, telomere-telomerase interactions are important in understanding cellular immortalization and aging, and developing specific anti-cancer therapeutics. Despite the great interest in telomerase, the mechanism of telomerase-catalyzed reverse transcription is not fully understood, and little is known about the structure of this intriguing enzyme. Each chapter, herein, describes novel research that investigates telomerase oligomerization and interactions between telomerase and model telomeric structures. More specifically, Chapter II focuses on the characterization and visualization of cooperative Euplotes aedicualtus telomerase dimers by gel filtration chromatography and electron microscopy. Chapter III details the formation, isolation, and characterization of G-quadruplex DNA structures by native gel electrophoresis, while Chapter IV documents novel interactions between a subset of G-quadruplex DNA structures and Euplotes aediculatus telomerase. Chapter V concludes the dissertation with a retrospective analysis of the research herein.
Relatorio final da iniciação Ciêtifica-"MICROMEDIÇÃO DE VAZÃO DE ÁGUA, RECONHECIMENTO DE FALHA EM EQUIPAMENTOS HIDROSSANITÁRIO E ANÁLISE DOS HÁBITOS DE USO DE ÁGUA PELA COMUNIDADE UFSB"
Creators: name: Heithor De Andrade Costa Pereira Nascimento
name: De Araújo Kalid, Ricardo
Publisher: name: Zenodo
Year: 2023
Subjects: Micromedição. Avalição incerteza. Desvio padrão. Identificação de falha.

description: RESUMO: O estudo do relacionamento entre a universidade e a água pode mostrar diversos fatores passiveis de questionamento, colocando em debate o nível da pegada ecológica. A micromedição é um método que demanda tempo e atenção durante as investigações, mas expõe de forma eficiente os equipamentos com menor volume de água quando comparados aos semelhantes, ou então, aqueles que possuem importância para o plano ecológico qual a universidade se propõe a seguir, com a redução do uso de água. Além da realização da micromedição foi imprescindível analisar os dados, por meio: do desvio-padrão, da avaliação da incerteza padrão e a incerteza expandida. Métodos esses, que atribui confiabilidades aos dados, que permite a identificação de equipamentos com irregularidades quanto ao funcionamento observados na avaliação estatística. Como resultado, a universidade apresentou vários equipamentos que necessitam de manutenção, dando enfoque as torneiras Tipo 2 e vasos sanitários Tipo 2a, que representam 31% e 26% respectivamente da totalidade de equipamentos. Todavia, poucos equipamentos apresentam necessidades de serem trocados, entretanto, eles não podem ser ignorados e devem ser revistos para correções de falhas.
Coronin 1B Coordinates Actin Dynamics in Lamellipodia
Creators: name: Cai, Liang
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Cell migration is critical for a variety of physiological processes. Coronins are a conserved family of actin binding proteins that affect cell migration. My research focuses on the molecular mechanism through which Coronin 1B coordinates actin dynamics in lamellipodia. We report that Coronin 1B co-localizes with the Arp2/3 complex in lamellipodia, and co-immunoprecipitates with this complex. This interaction is regulated by PKC phosphorylation on Ser2. Further, we show that Coronin 1B interacts with not only the Arp2/3 complex but also the Slingshot 1L (SSH1L) phosphatase, two regulators of actin filament formation and turnover. Coronin 1B inhibits filament nucleation by Arp2/3 complex and this inhibition is attenuated by the Ser2 phosphorylation, a site targeted by SSH1L. Coronin 1B also directs SSH1L to lamellipodia where SSH1L likely regulates Cofilin activity via dephosphorylation. Accordingly, depleting Coronin 1B increases phospho-Cofilin levels, and alters lamellipodial dynamics and actin architecture. Thus, Coronin 1B coordinates actin assembly by Arp2/3 complex and actin disassembly by Cofilin for effective lamellipodial protrusion. Analysis of Coronin function has been hampered by the lack of a clear understanding of how Coronin interacts with F-actin. We identify a surface-exposed conserved residue, Arg30,which is critical for Coronin 1B binding to F-actin. We demonstrate that Coronin 1B binds with high affinity to ATP/ADP-Pi F-actin, and the R30D mutant lacking F-actin binding loses the ability to exert Coronin 1B function. Using various biochemical assays, we show that Coronin 1B disassembles Arp2/3- containing actin branches by inducing Arp2/3 dissociation from the side of filaments, which is potently antagonized by Cortactin. Coronin 1B localizes to actin branches in a mutually exclusive manner with the Arp2/3 complex, and live-cell imaging reveals a sequential accumulation of these proteins during actin network assembly. Interestingly, depletion of Coronin 1B synchronizes the dynamics of Arp2/3 complex with the actin network. Together, we conclude that Coronin 1B replaces the Arp2/3 complex at actin branches, promotes branched actin network remodeling, and coordinates actin dynamics in lamellipodia.
Antibiotic Significance with Immediate Implant Placement into Sites with Apical Pathology of Endodontic Origin
Creators: name: Hosseini, Bashir
Publisher: name: University of North Carolina at Chapel Hill
Year: 2014

description: Effects of antibiotics on the clinical outcomes of immediate implant placement replacing a tooth with an apical pathology were examined using a double-blind-randomized-controlled trial, antibiotics (N=10) and placebo (N=10). Post-operative pain/discomfort, cone-beam computed tomography and impressions were used to evaluate clinical outcomes. Survival rates of 100% (antibiotics) and 78% (control) were observed. There was no statistical difference in any clinical outcomes except for mid-facial soft tissue changes (p=0.02). Antibiotics appear to have little effect on immediate implant treatment outcomes.
Interaction of slow electrons with matter for nanoscale characterisation of solids
Creators: name: Ridzel, Olga
Publisher: name: Zenodo
Year: 2019
Subjects: secondary electrons, electron spectroscopy, inelastic mean free path

description: Electron spectroscopy techniques based on the interaction of electrons with matter are one of the most popular tools for surface analysis. Methods of electron spectroscopy imply the irradiation of a solid surface with e.g. an electron beam with the subsequent detection of the outgoing electron signal acquired in the form of the energy and angular distribution of emitted electrons or the energy spectrum. The interpretation of such electron spectra requires the knowledge on the interaction processes of electrons with matter. This thesis is dedicated to the investigation of electron transport in solids by means of two different approaches: the invariant imbedding method and the Monte Carlo simulation. The former approach is employed in problems of the interpretation and analysis of energy spectra of complicated multi-component materials such as graphene oxide. The possibility of the detection of light elements, including hydrogen and its isotopes, in different targets by means of elastic peak electron spectroscopy (EPES) is demonstrated. The latter approach is employed for the investigation of the secondary electron emission phenomenon. Unfortunately, electron emission is still far from being quantitatively understood which is partly due to the experimental difficulty associated with the in- vestigation of very low energy electrons. From the theoretical point of view, secondary electron emission modeling at a few eV is complicated by the absence of reliable data on the electron-solid interaction at such low energies such as the inelastic mean free path (IMFP). It turns out that secondary electron yield (SEY) values at any incident energy depend sensitively on the IMFP values, in particular below 100 eV, which makes it possible to get a realistic estimate for the IMFP values at low energies by comparing calculated SEY values with experimental data during variation of the IMFPs. In this work, a Monte Carlo model has been developed to describe the process of secondary electron emission from solids and calculate the SEY. The determination of IMFPs at low energies (below 100 eV) from analysis of SEYs at high energies was successfully performed for several metals and the results indicate that the IMFP values based on the Mermin dielectric function are more realistic. All the knowledge gained from this study points to the possibility of building a reliable theoretical model on the phenomenon of secondary electron emission. Experimental investigation of the IMFP at low energies by means of EPES was also carried out and results on the IMFP determination for a polycrystalline gold are presented.
Focus group guide_Supplementary_material_1
Creators: name: Ibis M. Alvarez
Publisher: name: Zenodo
Year: 2022
Subjects: Preservice teachers
Initial training
Classroom management
Virtual reality

description: Supplementary Material. Title of the paper "Immersive Virtual Reality to improve the competence to manage classroom climate in secondary schools". Published in the journal Educación XX1, 26, nº1 (2023)
Too Small to Regulate: International Evidence on Regulatory Monitoring
Creators: name: Stice-Lawrence, Lorien
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: I examine a phenomenon called Too Small to Regulate (TSTR) by which industries composed predominantly of small firms are more likely to violate regulatory requirements because their industry composition makes them especially difficult to effectively monitor. I identify TSTR industries throughout the world and find evidence consistent with firms in these industries receiving less regulatory monitoring using measures derived from firms’ financial disclosures and downloads of EDGAR filings by SEC and IRS employees. Consistent with inadequate oversight, firms in TSTR industries are penalized by the market with lower liquidity and are more likely to engage in non-compliant activities such as tax avoidance. The consequences of TSTR appear to be less severe when firms are monitored by third parties such as financial analysts, institutional investors, the news media, or Big N auditors. The TSTR effect varies predictably with exogenous changes in regulatory monitoring, enforcement, and resource constraints and is amplified in industries where regulation plays a greater role.
Variability-selected Active Galactic Nuclei in the VST-SUDARE/VOICE Survey of the COSMOS Field
Creators: name: De Cicco, D.
name: Paolillo, M.
name: Covone, G.
name: Falocco, S.
name: Longo, G.
name: Grado, A.
name: Limatola, L.
name: Botticella, M. T.
name: Pignata, G.
name: Cappellaro, E.
name: Vaccari, M.
name: Trevese, D.
name: Vagnetti, F.
name: Salvato, M.
name: Radovich, M.
name: Brandt, W. N.
name: Capaccioli, M.
name: Napolitano, N. R.
name: Schipani, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Optical variability has proven to be an effective way of detecting AGNs in imaging surveys, lasting from weeks to years. In the present work we test its use as a tool to identify AGNs in the VST multi-epoch survey of the COSMOS field, originally tailored to detect supernova events. We make use of the multi-wavelength data provided by other COSMOS surveys to discuss the reliability of the method and the nature of our AGN candidates. Our selection returns a sample of 83 AGN candidates; based on a number of diagnostics, we conclude that 67 of them are confirmed AGNs (81% purity), 12 are classified as supernovae, while the nature of the remaining 4 is unknown. For the subsample of AGNs with some spectroscopic classification, we find that Type 1 are prevalent (89%) compared to Type 2 AGNs (11%). Overall, our approach is able to retrieve on average 15% of all AGNs in the field identified by means of spectroscopic or X-ray classification, with a strong dependence on the source apparent magnitude. In particular, the completeness for Type 1 AGNs is 25%, while it drops to 6% for Type 2 AGNs. The rest of the X-ray selected AGN population presents on average a larger r.m.s. variability than the bulk of non variable sources, indicating that variability detection for at least some of these objects is prevented only by the photometric accuracy of the data. We show how a longer observing baseline would return a larger sample of AGN candidates. Our results allow us to assess the usefulness of this AGN selection technique in view of future wide-field surveys.
description: 17 pages, 8 figures. Accepted for publication in A&A - Edited language, corrected typos
Health Insurance Literacy: How People Understand and Make Health Insurance Purchase Decisions
Creators: name: Vardell, Emily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: The concept of health insurance literacy, which can be defined as “the extent to which consumers can make informed purchase and use decisions” (Kim, Braun, & Williams, 2013, p. 3), has only recently become a focus of health literacy research. Though employees have been making health insurance decisions for many years, the Affordable Care Act has brought the issues of health insurance literacy to the spotlight. For the large number of adults with lower levels of health literacy, their ability to procure appropriate levels of health insurance coverage and interact with the health care system successfully may be limited. While a considerable amount of literature has focused on studying health literacy in general, the information seeking and decision-making process regarding health insurance has not been studied as thoroughly. If this process is studied in a sample group of users, their information needs and use might be better understood. This qualitative study explores how individuals understand health insurance concepts and make health insurance purchase decisions. This study used semi-structured interview questions supplemented with a demographic questionnaire and the Health Insurance Literacy Measurement (HILM) developed by Paez et al. (2014). The study was conducted with newly hired employees at a large university in the southeastern United States. The collected data formed the foundation for the construction of a model of the health insurance decision-making process. This study identified information tactics used by individuals when evaluating health insurance materials, such as comparing plans side-by-side, calculating costs, and eliminating irrelevant information. The findings also shed light on the personal reflection individuals undertake when making their health insurance choices, including past experience with health insurance and forecasting their needs for the next year. The participants in this study characterized their health insurance choice as a shared decision, consulting others during their decision-making. The HILM, coupled with discussions during the semi-structured interviews, identified demographic implications of individuals’ health insurance literacy skills. In addition, the information needs and preferred information sources identified in this study will be of interest to human resources officers and other information professionals providing assistance with health insurance enrollment.
Continuous-flow biocatalysed kinetic resolution of 4-fluorophenyl-furan-2-yl methanol
Creators: name: de Souza, Rodrigo
name: Leão, Raquel
name: Maia, Barbara
name: Gomez, Mauro
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Enantiomerically pure secondary alcohols are useful in the synthesis of several natural products and as active pharmaceutical intermediates (API). Due to the high demand for these chiral compounds, much progress has been made in the areas of asymmetric synthesis and catalysis. In this context, biocatalysis together with continuous flow technology can be a valuable tool for more versatile and sustainable methods, with lower cost, greater stereoselectivity and less environmental impact. This work aims to obtain an enantiomerically pure alcohol of industrial interest, (4 Fluorophenyl) (furan-2-yl) methanol (3), by performing a kinetic resolution using immobilized Candida antarctica lipase B (Novozyme 435, N435) under continuous-flow conditions. Initial study was carried out to optimize batch reaction conditions. The best results were obtained using isooctane as solvent, 37.7 mg of N435 and three equivalents of isopropenyl acetate as acyl donor at 60 °C for 24 h. Under these conditions, a conversion of 49% and 91 of enantiomeric ratio was obtained. Optimized batch conditions were translated to the continuous flow reactor leading to the desired product in 30 min of residence time, 47% conversion and an enantiomeric ratio of 61.
On explicit descent of marked curves and maps
Creators: name: Sijsling, Jeroen
name: Voight, John
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We revisit a statement of Birch that the field of moduli for a marked three-point ramified cover is a field of definition. Classical criteria due to Dèbes and Emsalem can be used to prove this statement in the presence of a smooth point, and in fact these results imply more generally that a marked curve descends to its field of moduli. We give a constructive version of their results, based on an algebraic version of the notion of branches of a morphism and allowing us to extend the aforementioned results to the wildly ramified case. Moreover, we give explicit counterexamples for singular curves.
description: 35 pages
Estimating the Selectivity of Spatial Queries Using the 'Correlation' Fractal Dimension
Creators: name: Belussi, Alberto
name: Faloutsos, Christos
Publisher: name: Figshare
Year: 2018
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We examine the estimation of selectivities for range and spatial join queries in real spatial databases. As we have shown earlier [FK94], real point sets: (a) violate consistentlythe "uniformity" and "independence" assumptions, (b) can often be described as "fractals", with non-integer (fractal) dimension. In this paper we show that, among the infinite family of fractal dimensions, the so called "Correlation Dimension" D2 is the one that we need to predict the selectivity of spatial join.

The main contribution is that, for all the real and synthetic point-sets we tried, the average number of neighbors for a given point of the point-set follows a power law, with D2 as the exponent. This immediately solves the selectivity estimation for spatial joins, as well as for "biased" range queries (i.e., queries whose centers prefer areas of high point density).

We present the formulas to estimate the selectivity for the biased queries, including an integration constant (Kshape!,) for each query shape. Finally, we show results on real and synthetic point sets, where our formulas achieve very low relative errors (typically about 10%, versus 40%-100% of the uniformity assumption).
Long-Period Oscillations of Sunspots Observed by SOHO/MDI
Creators: name: Efremov, V. I.
name: Parfinenko, L. D.
name: Solovev, A. A.
name: Kirichek, E. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We processed magnetograms that were obtained with the Michaelson Doppler Imager onboard the Solar and Heliospheric Observatory (SOHO/MDI). The results confirm the basic properties of long-period oscillations of sunspots that have previously been established and also reveal new properties. We show that the limiting (lowest) eigenmode of low-frequency oscillations of a sunspot as a whole is the mode with a period of 10 - 12 up to 32 - 35 hours (depending on the sunspot's magnetic- field strength). This mode is observed consistently throughout the observation period 5 - 7 days, but its amplitude is subject to quasi-cyclic changes, which are separated by about 1.5 - 2 days. As a result, the lower mode with periods of about 35 - 48 hours appears in the power spectrum of sunspot oscillations. But this lowest mode is apparently not an eigenmode of a sunspot because its period does not depend on the magnetic field of the sunspot. Perhaps, the mode reflects the quasi-periodic sunspot perturbations caused by supergranulation cells that surround it. We also analyze SOHO/MDI artifacts, which may affect the low-frequency power spectra of sunspots.
Additional file 7 of Role of oxidative stress and inflammation-related signaling pathways in doxorubicin-induced cardiomyopathy
Creators: name: Shi, Saixian
name: Chen, Ye
name: Luo, Zhijian
name: Nie, Guojun
name: Dai, Yan
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 6. Table S6: Some drugs that exert cardioprotective effects by acting on the TLR signaling.
Trust, identity, and commercial advantage: Hainanese upward mobility in the rice trade on the east coast of peninsular Thailand (mid-19th century—1980s)
Creators: name: Liu, Yan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: This thesis examines the rise and decline of the rice trade on the east coast of peninsular Thailand from the middle of the nineteenth century to the 1980s, in order to rectify the image of the Chinese middleman in Southeast Asia as the evil “blood suckers”; furthermore, to demonstrate the heterogeneity inside the Chinese community in Southeast Asia, and the hierarchical structure and mobility within a specific trade; in addition, to emphasize the significance of personal trust and credit relationships embedded in particular exchange relations, in the traditional markets characterized by contract uncertainty where the legal framework for the enforcement of contracts is not well developed.
Analysis of Admixed Animals using Indirect Haplotype Information from Existing Technologies
Creators: name: Fu, Chen-Ping
Publisher: name: University of North Carolina at Chapel Hill Graduate School
Year: 2015
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Computer science

description: The use of genotyping and sequencing technologies in genetic studies typically involves inspecting variants defined within a single reference genome. While this definition of genetic variation promotes a simple model of the genome that is easy to organize and analyze, it does not encompass the full breadth of variation possible between individuals. Fortunately, existing technologies capture information about genomic variation outside the original targeted variants. By incorporating these low-level signals, which classical methods generally regard as noise, we can make more accurate inferences about the relationship between admixed animals and their ancestral and parental strains. In this thesis, I use both genotyping microarrays and RNA sequencing data to demonstrate the utility of using signals from ancestral haplotype data to analyze admixed animals. I introduce a novel method for designing a genotyping microarray that provides maximal information about ancestral haplotypes for the admixed population Collaborative Cross (CC). The result is the 78K-marker MegaMUGA array, which achieves high call rates and distinction power in a diverse set of mouse strains. Using probe intensities from microarrays such as the MegaMUGA, I develop methods for founder haplotype inference as well as quantitative trait loci (QTL) mapping. I show that these intensity-based methods outperform traditional genotype call-based methods due to their ability to capture additional information about the local sequence, which I confirm using high-throughput sequencing data within probe regions. In addition to demonstrating my thesis with microarray intensity data, I also use RNA-seq read data from parental strains to estimate allele-specific expression (ASE) in the F1 offspring. By directly using parental read data as features in a regularized regression problem, I can achieve accurate estimations of the offspring's expressed gene transcripts and allele-specific expression levels, showing that no matter the data source, incorporating low-level signals directly from ancestral strains provides a more accurate template for analysis of admixed strains.
Four-body correlations in nuclei
Creators: name: Sambataro, M.
name: Sandulescu, N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Low-energy spectra of 4$n$ nuclei are described with high accuracy in terms of four-body correlated structures ("quartets"). The states of all $N\geq Z$ nuclei belonging to the $A=24$ isobaric chain are represented as a superposition of two-quartet states, with quartets being characterized by isospin $T$ and angular momentum $J$. These quartets are assumed to be those describing the lowest states in $^{20}$Ne ($T_z$=0), $^{20}$F ($T_z$=1) and $^{20}$O ($T_z$=2). We find that the spectrum of the self-conjugate nucleus $^{24}$Mg can be well reproduced in terms of $T$=0 quartets only and that, among these, the $J$=0 quartet plays by far the leading role in the structure of the ground state. The same conclusion is drawn in the case of the three-quartet $N=Z$ nucleus $^{28}$Si. As an application of the quartet formalism to nuclei not confined to the $sd$ shell, we provide a description of the low-lying spectrum of the proton-rich $^{92}$Pd. The results achieved indicate that, in 4$n$ nuclei, four-body degrees of freedom are more important and more general than usually expected.
description: 5 pages, 4 figures
The effect of natural deep eutectic solvents on laccase activity and oligomerization of rutin
Creators: name: Ünlü, Ayşe Ezgi
name: Prasad, Brinda
name: Anavekar, Kishan
name: Bubenheim, Paul
name: Liese, Andreas
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Neuroscience
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Natural deep eutectic solvents (NADESs) were investigated for the activity and stability of the laccase enzyme. Laccase was found to be active only in a low amount of choline chloride containing NADESs while it maintained its activity both in high and low amounts of betaine containing NADESs. Rutin, as a flavonoid monomer shows high antioxidant, antibacterial, antiviral and anti-inflammatory properties and these properties are enhanced in the polymerised form. In this study, the organic co-solvent that is conventionally used in the oligomerization of rutin was replaced with two different green solvents, choline chloride-ethylene glycol (1:2 molar ratio) and betaine-mannose (5:2 molar ratio). LC-MS results revealed spontaneous derivatization of rutin as well as the oligomerization of the derivatives besides rutin. The final products were found to have enhanced superoxide radical activity. In this study, enzymatic oligomerization of rutin was investigated for the first time in the presence of eco-friendly green solvents presenting an alternative pathway without any toxic components.
Evaluating Audio Skimming and Frame Rate Acceleration for Summarizing BBC Rushes
Creators: name: Christel, Michael G
name: Wei-Hao  Lin
name: Maher, Bryan
Publisher: name: Figshare
Year: 2018
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: For the first time in 2007, TRECVID considered structured evaluation of automated video summarization, utilizing BBC rushes video. In 2007, we conducted user evaluations with the published TRECVID summary assessment procedure to rate a cluster method for producing summaries, a 25x  (sampling every 25th frame), and pz (emphasizing pans and zooms). Data from 4 human assessors shows significant differences between the cluster, pz, and 25x approaches. The best coverage (text inclusion performance) is obtained by 25x, but at the expense of 25x taking the most time to evaluate and judged as being the most redundant. Method pz was easier to use than cluster  and rated best on redundancy. A question following the TRECVID workshop was whether simple speed-ups would still work at 50x or 100x, leading to a study with 15 human assessors looking at pzA (pz  but with better audio), 25x, 50x, and 100x summaries (these latter 3 with an unsynchronized more comprehensive audio track as well). 100x gives the fastest time on task but with poor usability and performance. PzA gives the best usability measures but poor time on task and performance. 25x does well on performance as before, with 50x doing just as well but with much less time on task and better ease of use and redundancy scores. Based on these results, 50x with its audio skimming is recommended as the best way to summarize video rushes materials.
A Chandra Observation of the Eclipsing Wolf-Rayet Binary CQ Cep
Creators: name: Skinner, S. L.
name: Zhekov, S. A.
name: Guedel, M.
name: Schmutz, W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The short-period (1.64 d) near-contact eclipsing WN6+O9 binary system CQ Cep provides an ideal laboratory for testing the predictions of X-ray colliding wind shock theory at close separation where the winds may not have reached terminal speeds before colliding. We present results of a Chandra X-ray observation of CQ Cep spanning ~1 day during which a simultaneous Chandra optical light curve was acquired. Our primary objective was to compare the observed X-ray properties with colliding wind shock theory, which predicts that the hottest shock plasma (T > 20 MK) will form on or near the line-of-centers between the stars. The X-ray spectrum is strikingly similar to apparently single WN6 stars such as WR 134 and spectral lines reveal plasma over a broad range of temperatures T ~ 4 - 40 MK. A deep optical eclipse was seen as the O star passed in front of the Wolf-Rayet star and we determine an orbital period P = 1.6412400 d. Somewhat surprisingly, no significant X-ray variability was detected. This implies that the hottest X-ray plasma is not confined to the region between the stars, at odds with the colliding wind picture and suggesting that other X-ray production mechanisms may be at work. Hydrodynamic simulations that account for such effects as radiative cooling and orbital motion will be needed to determine if the new Chandra results can be reconciled with the colliding wind picture.
description: 31 pages, 4 figures
Elevating research data management maturity at Waipapa Taumata Rau
Creators: name: Kumar, Avishek
name: Wharton, Yvette
Publisher: name: The University of Auckland
Year: 2023
Subjects: classificationCode: 460599
subject: Data management and data science not elsewhere classified
classificationCode: 451999
subject: Other Indigenous data, methodologies and global Indigenous studies not elsewhere classified
classificationCode: 451906
subject: Indigenous data and data technologies
classificationCode: 460402
subject: Data and information privacy
classificationCode: 460403
subject: Data security and protection
classificationCode: 480706
subject: Privacy and data rights
classificationCode: 451204
subject: Te mana motuhake o ngā raraunga Māori (Māori data sovereignty)

description: In 2021, the University published its strategic plan Taumata Teitei, in which we voiced our aspiration to become a Māori data sovereignty organisation. That same year we published a stocktake report defining the current state of Research Data Management (RDM) maturity within the University and presented a series of recommendations seeking to uplift that maturity.

In this talk we present an outline of the completed and in-flight activities increasing our RDM maturity. Completed activities include releasing a research data management policy to provide guidance for our researchers and the appointing a Poutiaki Rangahau Māori to guide our journey towards becoming a Māori data sovereignty organisation. Our in-flight activities include: the development of a Secure Research Environment for analysing sensitive research data; the provision of a machine-actionable data management planning tool; and the interconnection of our research entities (people, projects, organisations, outputs and instruments) via a networks of persistent identifiers.
γ -ray spectroscopy of Tl 209
Creators: name: Sonzogni, A.A.
name: Walters, W.B.
name: Chowdhury, P.
name: Ayangeakaa, A.D.
name: Greene, J.P.
name: Harker, J.L.
name: Zhu, S.
name: Yanez, R.
name: Chiara, C.J.
name: Lauritsen, T.
name: Lister, C.J.
name: Loveland, W.
name: McCutchan, E.A.
name: Carpenter, M.P.
name: Janssens, R.V.F.
name: Amro, B.M.S.
name: Barrett, J.S.
Publisher: name: American Physical Society
Year: 2017

description: States in Tl209 were populated using a multinucleon transfer reaction with a Xe136 beam impinging on a thick Pb208 target at E=785 MeV. The beam was pulsed at 825-ns intervals in order to perform isomer decay spectroscopy. The known Jπ=17/2+ isomer in Tl209 was located at 1228(4) keV and measured to have a half-life of T1/2=146(10) ns. A second isomer with Jπ=13/2+ was found to have T1/2=14(5) ns. The previously suggested low-energy X and Y transitions were found to have energies 57(2) and 47(2) keV respectively, while the measurement of conversion coefficients and a new decay path make the spin assignments below the isomers experimentally firm. Correlating the delayed γ transitions with the prompt beam flash allowed the decay of states above the isomer to be found. The longer-lived isomer represents full alignment of the simplest two-particle, one-hole configuration and illuminates the remarkably weak coupling of the proton hole to the Pb210 core.
AGB Sodium Abundances in the Globular Cluster 47 Tucanae (NGC 104)
Creators: name: Johnson, Christian I.
name: McDonald, Iain
name: Pilachowski, Catherine A.
name: Mateo, Mario
name: Bailey, John I.
name: Cordero, Maria J.
name: Zijlstra, Albert A.
name: Crane, Jeffrey D.
name: Olszewski, Edward
name: Shectman, Stephen A.
name: Thompson, Ian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A recent analysis comparing the [Na/Fe] distributions of red giant branch (RGB) and asymptotic giant branch (AGB) stars in the Galactic globular cluster NGC 6752 found that the ratio of Na-poor to Na-rich stars changes from 30:70 on the RGB to 100:0 on the AGB. The surprising paucity of Na-rich stars on the AGB in NGC 6752 warrants additional investigations to determine if the failure of a significant fraction of stars to ascend the AGB is an attribute common to all globular clusters. Therefore, we present radial velocities, [Fe/H], and [Na/Fe] abundances for 35 AGB stars in the Galactic globular cluster 47 Tucanae (47 Tuc; NGC 104), and compare the AGB [Na/Fe] distribution with a similar RGB sample published previously. The abundances and velocities were derived from high resolution spectra obtained with the Michigan/Magellan Fiber System (M2FS) and MSpec spectrograph on the Magellan-Clay 6.5m telescope. We find the average heliocentric radial velocity and [Fe/H] values to be =-18.56 km s^-1 (sigma=10.21 km s^-1) and =-0.68 (sigma=0.08), respectively, in agreement with previous literature estimates. The average [Na/Fe] abundance is 0.12 dex lower in the 47 Tuc AGB sample compared to the RGB sample, and the ratio of Na-poor to Na-rich stars is 63:37 on the AGB and 45:55 on the RGB. However, in contrast to NGC 6752, the two 47 Tuc populations have nearly identical [Na/Fe] dispersion and interquartile range values. The data presented here suggest that only a small fraction <20% of Na-rich stars in 47 Tuc may fail to ascend the AGB. Regardless of the cause for the lower average [Na/Fe] abundance in AGB stars, we find that Na-poor stars and at least some Na-rich stars in 47 Tuc evolve through the early AGB phase. [abridged]
description: Accepted for publication in the Astronomical Journal; 15 pages; 8 figures; 4 tables
Quasielastic electron- and neutrino-nucleus scattering in a continuum random phase approximation approach
Creators: name: Pandey, V.
name: Jachowicz, N.
name: Van Cuyck, T.
name: Ryckebusch, J.
name: Martini, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a continuum random phase approximation approach to study electron- and neutrino-nucleus scattering cross sections, in the kinematic region where quasielastic scattering is the dominant process. We show the validity of the formalism by confronting inclusive ($e,e'$) cross sections with the available data. We calculate flux-folded cross sections for charged-current quasielastic antineutrino scattering off $^{12}$C and compare them with the MiniBooNE cross-section measurements. We pay special emphasis to the contribution of low-energy nuclear excitations in the signal of accelerator-based neutrino-oscillation experiments.
description: 5 pages, 5 figures. Contribution to the proceedings of the 16th International Workshop on Neutrino Factories and Future Neutrino Beam Facilities (NUFACT-2014)