cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 3:Â additional methods. of The 2014 Ebola virus disease outbreak in Pujehun, Sierra Leone: epidemiology and impact of interventions
Creators: name: Ajelli, Marco
name: Parlamento, Stefano
name: Bome, David
name: Atiba Kebbi
name: Atzori, Andrea
name: Frasson, Clara
name: Putoto, Giovanni
name: Carraro, Dante
name: Merler, Stefano
Publisher: name: Figshare
Year: 2015
Subjects: subject: Medicine
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: (PDF 2635 kb)
Standardized Luminosity of the Tip of the Red Giant Branch utilizing Multiple Fields in NGC 4258 and the CATs Algorithm
Creators: name: Li, Siyang
name: Riess, Adam G.
name: Scolnic, Dan
name: Anand, Gagandeep S.
name: Wu, Jiaxi
name: Casertano, Stefano
name: Yuan, Wenlong
name: Beaton, Rachael
name: Anderson, Richard I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Tip of the Red Giant Branch provides a luminous standard candle for calibrating distance ladders that reach Type Ia supernova (SN Ia) hosts. However, recent work reveals that tip measurements vary at the $\sim$ 0.1 mag level for different stellar populations and locations within a host, which may lead to inconsistencies along the distance ladder. We pursue a calibration of the tip using 11 Hubble Space Telescope fields around the maser host, NGC 4258, that is consistent with SN Ia hosts by standardizing tip measurements via their contrast ratios. We find $F814W$-band tips that exhibit a full 0.3 mag range and 0.1 mag dispersion. We do not find any correlation between HI column density and the apparent tip to 0.04 $\pm$ 0.03 mag/cm$^{-2}$. We search for a tip-contrast relation (TCR) and measure the TCR within the fields of NGC 4258 of $-0.015\pm0.008$ mag/$R$, where $R$ is the contrast ratio. This value is consistent with the TCR originally discovered in the GHOSTS sample (Wu et al. 2022) of $-0.023\pm0.005$ mag/R. Combining these measurements, we find a global TCR of $-0.021\pm0.004$ mag/R and a calibration of $M_I^{TRGB} = -4.025 \pm 0.035 - (R-4)\times0.021$ mag. We also use stellar models to simulate single age and metallicity stellar populations with [Fe/H] from $-2.0$ to $-0.7$ and ages from 3 Gyr to 12 Gyr and reconstruct the global TCR found here to a factor of $\sim$ 2. This work is combined in a companion analysis with tip measurements of nearby SN Ia hosts to measure $H_0$.
description: 20 pages, 12 figures, 3 tables. Submitted to ApJ
Asynchronous global-local non-invasive coupling for linear elliptic problems
Creators: name: Kerim, Ahmed El
name: Gosselet, Pierre
name: Magoulès, Frédéric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper presents the first asynchronous version of the Global/Local non-invasive coupling, capable of dealing efficiently with multiple, possibly adjacent, patches. We give a new interpretation of the coupling in terms of primal domain decomposition method, and we prove the convergence of the relaxed asynchronous iteration. The asynchronous paradigm lifts many bottlenecks of the Global/Local coupling performance. We illustrate the method on several linear elliptic problems as encountered in thermal and elasticity studies.
The Scientific Performance of the Microchannel X-ray Telescope on board the SVOM Mission
Creators: name: Gotz, D.
name: Boutelier, M.
name: Burwitz, V.
name: Chipaux, R.
name: Cordier, B.
name: Feldman, C.
name: Ferrando, P.
name: Fort, A.
name: Gonzalez, F.
name: Gros, A.
name: Hussein, S.
name: Duigou, J. -M. Le
name: Meidinger, N.
name: Mercier, K.
name: Meuris, A.
name: Pearson, J.
name: Renault-Tinacci, N.
name: Robinet, F.
name: Schneider, B.
name: Willingale, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Microchannel X-ray Telescope (MXT) will be the first focusing X-ray telescope based on a "Lobster-Eye" optical design to be flown on Sino-French mission SVOM. SVOM will be dedicated to the study of Gamma-Ray Bursts and more generally time-domain astrophysics. The MXT telescope is a compact (focal length ~ 1.15 m) and light (< 42 kg) instrument, sensitive in the 0.2--10 keV energy range. It is composed of an optical system, based on micro-pore optics (MPOs) of 40 micron pore size, coupled to a low-noise pnCDD X-ray detector. In this paper we describe the expected scientific performance of the MXT telescope, based on the End-to-End calibration campaign performed in fall 2021, before the integration of the SVOM payload on the satellite.
description: 22 pages, 12 figures, accepted for publication in Experimental Astronomy
Dedualizing complexes and MGM duality
Creators: name: Positselski, Leonid
Publisher: name: arXiv
Year: 2015
Subjects: subject: Category Theory (math.CT)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: We show that various derived categories of torsion modules and contramodules over the adic completion of a commutative ring by a weakly proregular ideal are full subcategories of the related derived categories of modules. By the work of Dwyer-Greenlees and Porta-Shaul-Yekutieli, this implies an equivalence between the (bounded or unbounded) conventional derived categories of the abelian categories of torsion modules and contramodules. Over the adic completion of a commutative ring by an arbitrary finitely generated ideal, we obtain an equivalence between the derived categories of complexes of modules with torsion and contramodule cohomology modules. We also define two versions of the notion of a dedualizing complex over the adic completion of a commutative ring, one for an ideal with an Artinian quotient ring and the other one for a weakly proregular ideal, and use these to construct equivalences between the conventional as well as certain exotic derived categories of the abelian categories of torsion modules and contramodules. The philosophy of derived co-contra correspondence is discussed in the introduction.
description: LaTeX 2e, 55 pages; v.7: section 4 and appendix C, about coalgebras, removed (to be published as a separate paper) and replaced with a new section 4, about (essentially) complete Noetherian local rings; section 0.10 of the introduction rewritten accordingly; v.8: small changes -- this is intended as the final version
Анализ и оценка дебиторской задолженности в производственных организациях: методическое обеспечение
Creators: name: Р.В. Нуждин
name: И.М. Ярцева
name: Н.В. Кондрашова
name: Н.И. Пономарёва
Publisher: name: Сахар
Year: 2023
Subjects: дебиторская задолженность
просроченная задолженность
операционный цикл
оборачиваемость
аналитические процедуры.
receivables
arrears
operating cycle
turnover
analytical procedures.

description: Рассмотрены содержательные и сущностные характеристики анализа и оценки дебиторской задолженности на основе изучения мнений зарубежных и отечественных представителей научной школы. Выявлены пробелы в применении аналитических процедур в ходе организации работы с дебиторами. Предложена к использованию в производственных организациях аналитическая система, ориентированная на оценку просроченной дебиторской задолженности и её влияния на уровень рентабельности.
description: Тhe content and essential characteristics of the analysis and evaluation of receivables are considered based on the study of the opinions of foreign and domestic representatives of the scientific school. Gaps in the application of analytical procedures in the course of organizing work with debtors were identified. Proposed for use in manufacturing organizations analytical system focused on the assessment of overdue accounts receivable and its impact on the level of profitability.
DEAL – Erster Vertragsabschluss und mögliche Auswirkungen auf Geschäftsprozesse an der UB Bielefeld
Creators: name: Pieper, Dirk
Publisher: name: Kolloquium Wissensinfrastruktur
Year: 2019

description: Auf Empfehlung der Universitätsbibliothek haben die Bibliothekskommission und das Rektorat der Universität Bielefeld den Beitritt zum DEAL-Wiley-Konsortium fristgerecht zum 18.04.2019 beschlossen. Der Vortrag stellt den ersten Vertragsabschluss in den Kontext der laufenden Open-Access-Transformation und gibt einen Ausblick auf kommende Veränderungen der Open-Access-Publikations- und Medienbearbeitungsworkflows an der UB Bielefeld.
description: Kolloquium Wissensinfrastruktur, Sommersemester 2019
Влияние несахаров сахарной свёклы на технологию и выход сахара
Creators: name: Р.С. Решетова
name: О.М. Баранов
Publisher: name: Сахар
Year: 2023
Subjects: углеводный состав сахарной свёклы
сахароза
раффиноза
пектиновые вещества
азотсодержащие вещества
белки
амиды
аминокислоты
диффузия
дефекация
выпаривание
кристаллизация.
sugar beet carbohydrate composition
sucrose
raffinose
pectin substances
nitrogen-containing substances
proteins
amides
amino acids
diffusion
defecation
evaporation
crystallization

description: Дано определение понятия «технологическое качество сахарной свёклы». Рассмотрены свойства каждого из химических соединений, входящих в состав сахарной свёклы и влияющих на её технологическое качество, ведение технологических процессов при её переработке, качество и выход готовой продукции. С целью снижения отрицательных влияний отдельных компонентов сахарной свёклы на технологию и выход сахара даны рекомендации по технологическим режимам и ведению основных технологических процессов.
description: The definition of the concept «technological quality of sugar beet» is given. The properties of each of the chemical constituents of the sugar beet affecting its technological quality, running technological processes during its processing, the quality and yield of finished products are considered. In order to reduce the negative effects of separate components of sugar beet on the technology and sugar yield, recommendations on technological modes and running of basic technological processes are given.
Exclusive $η_c$ production from small-$x$ evolved Odderon at a electron-ion collider
Creators: name: Benić, Sanjin
name: Horvatić, Davor
name: Kaushik, Abhiram
name: Vivoda, Eric Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute exclusive $η_c$ production in high energy electron-nucleon and electron-nucleus collisions that is sensitive to the Odderon. In perturbative QCD the Odderon is a $C$-odd color singlet consisting of at least three $t$-channel gluons exchanged with the target. By using the Color Glass Condensate effective theory our result describes the Odderon exchange at the high collision energies that would be reached at a future electron-ion collider. The Odderon distribution is evolved to small-$x$ using the Balitsky-Kovchegov evolution equation with running coupling corrections. We find that while at low momentum transfers $t$ the cross section off a proton is dominated by the Primakoff process, the Odderon becomes relevant at larger momentum transfers of $|t|\geq1.5$ GeV$^2$. We point that the Odderon could also be extracted at low-$t$ using neutron targets since the Primakoff component is strongly suppressed. In the case of nuclear targets, the Odderon cross section becomes enhanced thanks to the mass number of the nuclear target. The gluon saturation effect induces a shift in the diffractive pattern with respect to the Primakoff process that could be used as a signal for the Odderon.
description: a few typos corrected, a few references added, matches the published version
Additional file 4: of A meta-analysis of the effects of non-traditional teaching methods on the critical thinking abilities of nursing students
Creators: name: JuHee Lee
name: Yoonju Lee
name: SaeLom Gong
name: Juyeon Bae
name: Moonki Choi
Publisher: name: Figshare
Year: 2016
Subjects: subject: Medicine
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Outcomes of CCTST subscales. (DOCX 21 kb)
Моделирование роста кристаллов сахарозы из промышленных гетерогенных растворов
Creators: name: В.А. Грибкова
name: Е.В. Семенов
name: А.А. Авакова
name: Д.П. Митрошина
name: А.А. Славянский
Publisher: name: Сахар
Year: 2023
Subjects: вакуум-аппарат
утфель
сахароза
кинетика
фронт концентрации
кристаллообразование.
vacuum apparatus
massecuite
sucrose
kinetics
concentration front
crystal formation.

description: Разработана физико-математическая модель двухфазного диффузионного процесса кристаллообразования сахарозы в рабочем объёме вакуумаппарата, позволяющая учитывать изменения концентрации сахарозы в межкристальном растворе по времени проведения процесса его кристаллизации с учётом влияния на него фронта изменения концентрации, а также условия раскачивания утфеля сахарсодержащим раствором.
description: A physical and mathematical model of a two-phase diffusion process of sucrose crystal formation in the working volume of a vacuum apparatus has been developed, which makes it possible to take into account changes in the concentration of sucrose in the intercrystalline solution over the time of its crystallization process, taking into account the influence of the concentration change front on it, as well as the conditions for rocking the massecuite with a sugar-containing solution.
Disentangling the sources of ionizing radiation in superconducting qubits
Creators: name: Cardani, L.
name: Colantoni, I.
name: Cruciani, A.
name: De Dominicis, F.
name: D'Imperio, G.
name: Laubenstein, M.
name: Mariani, A.
name: Pagnanini, L.
name: Pirro, S.
name: Tomei, C.
name: Casali, N.
name: Ferroni, F.
name: Frolov, D.
name: Gironi, L.
name: Grassellino, A.
name: Junker, M.
name: Kopas, C.
name: Lachman, E.
name: McRae, C. R. H.
name: Mutus, J.
name: Nastasi, M.
name: Pappas, D. P.
name: Pilipenko, R.
name: Sisti, M.
name: Pettinacci, V.
name: Romanenko, A.
name: Van Zanten, D.
name: Vignati, M.
name: Withrow, J. D.
name: Zhelev, N. Z.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Radioactivity was recently discovered as a source of decoherence and correlated errors for the real-world implementation of superconducting quantum processors. In this work, we measure levels of radioactivity present in a typical laboratory environment (from muons, neutrons, and gamma's emitted by naturally occurring radioactive isotopes) and in the most commonly used materials for the assembly and operation of state-of-the-art superconducting qubits. We develop a GEANT-4 based simulation to predict the rate of impacts and the amount of energy released in a qubit chip from each of the mentioned sources. We finally propose mitigation strategies for the operation of next-generation qubits in a radio-pure environment.
Additional file 1: of Clinicopathological and prognostic significance of mTOR and phosphorylated mTOR expression in patients with esophageal squamous cell carcinoma: a systematic review and meta-analysis
Creators: name: Shuangjiang Li
name: Zhiqiang Wang
name: Huang, Jian
name: Cheng, Shan
name: Du, Heng
name: Guowei Che
name: Peng, Yong
Publisher: name: Figshare
Year: 2016
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Marine Biology
subject: Cancer

description: Summary of electronic literature retrieval. (DOCX 14Â kb)
Higher-group structure in $2n$-dimensional axion-electrodynamics
Creators: name: Nakajima, Tatsuki
name: Sakai, Tadakatsu
name: Yokokura, Ryo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate $2n$-dimensional axion electrodynamics for the purpose of exploring a higher-group structure underlying it. This is manifested as a Green-Schwarz transformation of the background gauge fields that couple minimally to the conserved currents. The $n=3$ case is studied most intensively. We derive the identities of correlation functions among the global symmetry generators by using a gauge transformation that maps two correlation functions with each other. A key ingredient in this computation is given by the Green-Schwarz transformation and the 't Hooft anomalies associated with the gauge transformation. The algebraic structure of these results and its physical interpretations are discussed in detail. In particular, we find that the higher-group structure for $n=3$ is endowed with a multi-ary operation among the symmetry generators.
description: 29 pages, 6 figures
Universality for Black Hole Heat Engines Near Critical Points
Creators: name: DiMarco, Maria C.
name: Jess, Sierra L.
name: Hennigar, Robie A.
name: Mann, Robert B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Johnson has shown [arXiv:1703.06119] that in the vicinity of a critical point the efficiency of a black hole heat engine can approach the Carnot efficiency while maintaining finite power. We characterize and extend this result in several ways, and we show how the rate of approach to the Carnot efficiency is governed by the critical exponents. We apply these results to several classes of black holes to illustrate their validity. Odd-order Lovelock black holes are known to have isolated critical points for which the critical exponents differ from the mean field theory values, providing a non-trivial test of the results. In this case, our results indicate the impossibility of even-order Lovelock black holes with isolated critical points in this class: their existence would constitute a violation of the second law of thermodynamics.
description: 23 pages, 1 figure
Fast and Anisotropic Flexibility-Rigidity Index
Creators: name: Opron, Kristopher
name: Xia, Kelin
name: Wei, Guo-Wei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The flexibility-rigidity index (FRI) is a newly proposed method for the construction of atomic rigidity functions. The FRI method analyzes protein rigidity and flexibility and is capable of predicting protein B-factors without resorting to matrix diagonalization. A fundamental assumption used in the FRI is that protein structures are uniquely determined by various internal and external interactions, while the protein functions, such as stability and flexibility, are solely determined by the structure. As such, one can predict protein flexibility without resorting to the protein interaction Hamiltonian. Consequently, bypassing the matrix diagonalization, the original FRI has a computational complexity of O(N^2). This work introduces a fast FRI (fFRI) algorithm for the flexibility analysis of large macromolecules. The proposed fFRI further reduces the computational complexity to O(N). Additionally, we propose anisotropic FRI (aFRI) algorithms for the analysis of protein collective dynamics. The aFRI algorithms admit adaptive Hessian matrices, from a completely global 3N*3N matrix to completely local 3*3 matrices. However, these local 3*3 matrices have built in much non-local correlation. Furthermore, we compare the accuracy and efficiency of FRI with some {established} approaches to flexibility analysis, namely, normal mode analysis (NMA) and Gaussian network model (GNM). The accuracy of the FRI method is tested. The FRI, particularly the fFRI, is orders of magnitude more efficient and about 10% more accurate overall than some of the most popular methods in the field. The proposed fFRI is able to predict B-factors for alpha-carbons of the HIV virus capsid (313,236 residues) in less than 30 seconds on a single processor using only one core. Finally, we demonstrate the application of FRI and aFRI to protein domain analysis.
description: 10 figures and 50 references
Особенности накопления сахара гибридами сахарной свёклы компании «Штрубе» в условиях переувлажнения почвы в ЦЧР
Creators: name: А.Н. Цыкалов
Publisher: name: Сахар
Year: 2023
Subjects: сахарная свёкла
«Штрубе»
сахаристость
урожайность корнеплодов
sugar beet
Strube
sugar content
yield of root crops.

description: Сахарная свёкла является относительно засухоустойчивой культурой. В то же время на формирование её огромной биомассы расходуется значительное количество воды, только для 50 т/га корнеплодов потребуется более 9000 т/га воды. Однако в прошлом году основные регионы свеклосеяния ЦЧР столкнулись с обратной проблемой, а именно переувлажнением почвы по причине затяжных дождей в августе, сентябре и октябре. Данное событие в современных условиях произошло впервые. Вполне обычное явление для сахарной свёклы при избытке осадков в период уборки – образование новых боковых корешков. Наблюдается прирост урожая корнеплодов, но одновременно падает содержание сахара, что снижает рентабельность производства. Стресс оказывает огромное влияние на любую сельскохозяйственную культуру, в основном снижая урожайность и качество продукции. Предсказать, как поведёт себя конкретный сорт в условиях стресса, очень непросто, зачастую невозможно. Реакция сорта в подобных случаях определяется в основном путём наблюдения за ним в различных почвенно-климатических условиях, часто за несколько лет. В условиях переувлажнения почвы Воронежской и Орловской областей был проведён сравнительный анализ накопления сахара корнеплодами гибридов сахарной свёклы селекции «Штрубе»
description: Sugar beet is a relatively drought-resistant crop. At the same time, a significant amount of water is spent on the formation of its huge biomass, only 50 t/ha of root crops will require more than 9000 t/ha of water. However, last year the main beet-growing regions of the Central Chernozem region faced the opposite problem, namely, waterlogging of the soil due to prolonged rains in August, September and October. This phenomenon in modern conditions manifested itself for the first time. It is quite common for sugar beets to form new lateral roots with an excess of precipitation during the harvesting period. There is an increase in the yield of root crops, but at the same time, the sugar content decreases, which reduces the profitability of sugar beet production. Stress conditions have a huge impact on any crop, mainly reducing yields and product quality. Predicting how a particular crop variety will behave under stress is very difficult, often impossible. The stress behavior of a variety is determined mainly by observing it under various soil and climatic conditions, often over several years. In conditions of waterlogging of the soil of the Voronezh and Oryol regions, a comparative analysis of the accumulation of sugar by root crops of sugar beet hybrids of the "Strube" selection was fulfilled.
Many-body Localization in Clean Chains with Long-Range Interactions
Creators: name: Cheng, Chen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The strong long-range interaction leads to localization in the closed quantum system without disorders. Employing the exact diagonalization method, the author numerically investigates thermalization and many-body localization in translational invariant quantum chains with finite Coulomb interactions. In the computational basis, excluding all trivial degeneracies, the interaction-induced localization is well demonstrated in aspects of level statistics, eigenstate expectation values, and the Anderson localization on graphs constructed of the many-body basis. The nature of localization for generic eigenstates is attributed to the quasi-disorder from the power-law interactions. However, due to the real-space symmetries, the long-time dynamics is dominated by the degenerate eigenstates and eventually reach homogeneity in real space. On the other hand, the entanglement entropy exhibits the size-dependence beyond the area law for the same reason, even deep in the localized state, indicating an incomplete localization in real space.
description: 7 pages (including references), 5 figures
An Exploration of Cross-Patch Collaborations via Patch Linkage in OpenStack
Creators: name: Wang, Dong
name: Thongtanunam, Patanamon
name: Kula, Raula Gaikovina
name: Matsumoto, Kenichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Contemporary development projects benefit from code review as it improves the quality of a project. Large ecosystems of inter-dependent projects like OpenStack generate a large number of reviews, which poses new challenges for collaboration (improving patches, fixing defects). Review tools allow developers to link between patches, to indicate patch dependency, competing solutions, or provide broader context. We hypothesize that such patch linkage may also simulate cross-collaboration. With a case study of OpenStack, we take a first step to explore collaborations that occur after a patch linkage was posted between two patches (i.e., cross-patch collaboration). Our empirical results show that although patch linkage that requests collaboration is relatively less prevalent, the probability of collaboration is relatively higher. Interestingly, the results also show that collaborative contributions via patch linkage are non-trivial, i.e, contributions can affect the review outcome (such as voting) or even improve the patch (i.e., revising). This work opens up future directions to understand barriers and opportunities related to this new kind of collaboration, that assists with code review and development tasks in large ecosystems.
Design and Development of Graphitic Carbon Nitride-Based Photocatalysts for Enhanced Carbon Dioxide Reduction to Methane
Creators: name: TANG, JIE YINN
Publisher: name: Monash University
Year: 2022
Subjects: Catalysis and mechanisms of reactions
Energy generation, conversion and storage (excl. chemical and electrical)
Nanomaterials

description: Photocatalytic reduction of carbon dioxide to generate renewable fuels is a promising avenue for mitigating the energy crisis and climate change. However, this technology still suffers from low photoconversion efficiency and selectivity, which limits its practicality. This thesis addresses these issues by developing a highly efficient photocatalytic system based on graphitic carbon nitride semiconducting material. For this purpose, various modification strategies are used to improve the photocatalytic efficiency of graphitic carbon nitride.
A Comprehensive Model of Nitrogen-Free Ordered Carbon Quantum Dots
Creators: name: Boukhvalov, D. W.
name: Osipov, V. Yu.
name: Hogan, B. T.
name: Baldycheva, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We propose and demonstrate a novel range of models to accurately determine the optical properties of nitrogen-free carbon quantum dots (CQDs) with ordered graphene layered structures. We confirm the results of our models against the full range of experimental results for CQDs available from an extensive review of the literature. The models can be equally applied to CQDs with varied sizes and with different oxygen content in the basal planes of the constituent graphenic sheets. We demonstrate that the experimentally observed blue fluorescent emission of nitrogen-free CQDs can be associated with either small oxidised areas on the periphery of the graphenic sheets, or with sub-nanometre non-functionalised islands of sp2-hybridised carbon with high symmetry confined in the centres of oxidised graphene sheets. Larger and/or less symmetric non-functionalised regions in the centre of functionalised graphene sheet are found to be sources of green and even red fluorescent emission from nitrogen-free CQDs. We also demonstrate an approach to simplify the modelling of the discussed sp2-islands by substitution with equivalent strained polycyclic aromatic hydrocarbons. Additionally, we show that the bandgaps (and photoluminescence) of CQDs are not dependent on either out-of-plane corrugation of the graphene sheet or the spacing between sp2-islands. Advantageously, our proposed models show that there is no need to involve light-emitting polycyclic aromatic molecules (nanographenes) with arbitrary structures grafted to the particle periphery to explain the plethora of optical phenomena observed for CQDs across the full range of experimental works.
description: 32 pages, 6 figures, accepted to Nanoscale Research Letters
Robust Three-axis Attitude Stabilization for Inertial Pointing Spacecraft Using Magnetorquers
Creators: name: Celani, Fabio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this work feedback control laws are designed for achieving three-axis attitude stabilization of inertial pointing spacecraft using only magnetic torquers. The designs are based on an almost periodic model of geomagnetic field along the spacecraft's orbit. Both attitude plus attitude rate feedback, and attitude only feedback are proposed. Both feedback laws achieve local exponential stability robustly with respect to large uncertainties in the spacecraft's inertia matrix. The latter properties are proved using general averaging and Lyapunov stability. Simulations are included to validate the effectiveness of the proposed control algorithms.
Evolution of thermodynamic quantities on cosmological horizon in $Λ(t)$ model
Creators: name: Komatsu, Nobuyoshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The horizon of a flat Friedmann--Robertson--Walker (FRW) universe is considered to be dynamic when the Hubble parameter $H$ and the Hubble radius $r_{H}$ vary with time, unlike for de Sitter universes. To clarify the thermodynamics on a dynamic horizon, the evolution of a dynamical Kodama--Hayward temperature and Bekenstein--Hawking entropy on the horizon of a flat FRW universe is examined in a $Λ(t)$ model similar to time-varying $Λ(t)$ cosmologies. The $Λ(t)$ model includes both a power-law term proportional to $H^α$ (where $α$ is a free variable) and the equation of state parameter $w$, extending a previous analysis [Phys. Rev. D 100, 123545 (2019) (arXiv:1911.08306)]. Using the present model, a matter-dominated universe ($w=0$) and a radiation-dominated universe ($w=1/3$) are examined, setting $α<2$. Both universes tend to approach de Sitter universes and satisfy the maximization of entropy in the last stage. The evolution of several parameters (such as the Bekenstein--Hawking entropy) is similar for both $w=0$ and $w=1/3$, though the dynamical temperature $T_{H}$ is different. In particular, $T_{H}$ is found to be constant when $w=1/3$ with $α=1$, although $H$ and $r_{H}$ vary with time. To discuss this case, the specific conditions required for constant $T_{H}$ are examined. Applying the specific condition to the present model gives a cosmological model that can describe a universe at constant $T_{H}$, as if the dynamic horizon is in contact with a heat bath. The relaxation processes for the universe are also discussed.
description: Final version accepted for publication in PRD. A reference is updated. [14 pages, 9 figures]
$O(α_s^2$) Polarized Heavy Flavor Corrections}to Deep-Inelastic Scattering at $Q^2 \gg m^2$
Creators: name: Bierenbaum, I.
name: Blümlein, J.
name: De Freitas, A.
name: Goedicke, A.
name: Klein, S.
name: Schönwald, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate the quarkonic $O(α_s^2)$ massive operator matrix elements $ΔA_{Qg}(N), ΔA_{Qq}^{\rm PS}(N)$ and $ΔA_{qq,Q}^{\rm NS}(N)$ for the twist--2 operators and the associated heavy flavor Wilson coefficients in polarized deeply inelastic scattering in the region $Q^2 \gg m^2$ to $O(\varepsilon)$ in the case of the inclusive heavy flavor contributions. The evaluation is performed in Mellin space, without applying the integration-by-parts method. The result is given in terms of harmonic sums. This leads to a significant compactification of the operator matrix elements and massive Wilson coefficients in the region $Q^2 \gg m^2$ derived previously in \cite{BUZA2}, which we partly confirm, and also partly correct. The results allow to determine the heavy flavor Wilson coefficients for $g_1(x,Q^2)$ to $O(α_s^2)$ for all but the power suppressed terms $\propto (m^2/Q^2)^k, k \geq 1$. The results in momentum fraction $z$-space are also presented. We also discuss the small $x$ effects in the polarized case. Numerical results are presented. We also compute the gluonic matching coefficients in the two--mass variable flavor number scheme to $O(\varepsilon)$.
description: 58 pages Latex, 12 Figures
Anomalous temperature-induced volume contraction in GeTe
Creators: name: Chatterji, Tapan
name: Kumar, C. M. N.
name: Wdowik, Urszula D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The recent surge of interest in phase change materials GeTe, Ge$_2$Sb$_2$Te$_5$, and related compounds motivated us to revisit the structural phase transition in GeTe in more details than was done before. Rhombohedral-to-cubic ferroelectric phase transition in GeTe has been studied by high resolution neutron powder diffraction on a spallation neutron source. We determined the temperature dependence of the structural parameters in a wide temperature range extending from 309 to 973 K. Results of our studies clearly show an anomalous volume contraction of 0.6\% at the phase transition from the rhombohedral to cubic phase. In order to better understand the phase transition and the associated anomalous volume decrease in GeTe we have performed phonon calculations based on the density functional theory. Results of the present investigations are also discussed with respect to the experimental data obtained for single crystals of GeTe.
Additional file 2: Figure S1. of Comparing polysaccharide decomposition between the type strains Gramella echinicola KMM 6050T (DSM 19838T) and Gramella portivictoriae UST040801-001T (DSM 23547T), and emended description of Gramella echinicola Nedashkovskaya et al. 2005 emend. Shahina et al. 2014 and Gramella portivictoriae Lau et al. 2005
Creators: name: Panschin, Irina
name: Sixing Huang
name: Meier-Kolthoff, Jan
name: Tindall, Brian
name: Rohde, Manfred
name: Verbarg, Susanne
name: Lapidus, Alla
name: Han, James
name: Trong, Stephan
name: Haynes, Matthew
name: T. Reddy
name: Huntemann, Marcel
name: Pati, Amrita
name: Ivanova, Natalia
name: Mavromatis, Konstantinos
name: Markowitz, Victor
name: Woyke, Tanja
name: GĂśker, Markus
name: Hans-Peter Klenk
name: Kyrpides, Nikos
name: Hahnke, Richard
Publisher: name: Figshare
Year: 2016
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Hematology
subject: Plant Biology

description: The laminarin-like PUL. Figure S2. The 1,4-linked glucose-polymer-like PUL. Figure S3. The alginate-like PUL. Figure S4. Part of the alginate-like polysaccharide decom- position pathway. Figure S5. The sulfated Î˛-d-glucoside PUL. Figure S6. The two combined Î˛-d-fructans PUL. Figure S7. Part of the pectin-like polysaccharide decomposition pathway. (PDF 642 kb)
Strong SOCP Relaxations for the Optimal Power Flow Problem
Creators: name: Kocuk, Burak
name: Dey, Santanu S.
name: Sun, X. Andy
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper proposes three strong second order cone programming (SOCP) relaxations for the AC optimal power flow (OPF) problem. These three relaxations are incomparable to each other and two of them are incomparable to the standard SDP relaxation of OPF. Extensive computational experiments show that these relaxations have numerous advantages over existing convex relaxations in the literature: (i) their solution quality is extremely close to that of the SDP relaxations (the best one is within 99.96% of the SDP relaxation on average for all the IEEE test cases) and consistently outperforms previously proposed convex quadratic relaxations of the OPF problem, (ii) the solutions from the strong SOCP relaxations can be directly used as a warm start in a local solver such as IPOPT to obtain a high quality feasible OPF solution, and (iii) in terms of computation times, the strong SOCP relaxations can be solved an order of magnitude faster than standard SDP relaxations. For example, one of the proposed SOCP relaxations together with IPOPT produces a feasible solution for the largest instance in the IEEE test cases (the 3375-bus system) and also certifies that this solution is within 0.13% of global optimality, all this computed within 157.20 seconds on a modest personal computer. Overall, the proposed strong SOCP relaxations provide a practical approach to obtain feasible OPF solutions with extremely good quality within a time framework that is compatible with the real-time operation in the current industry practice.
Noninvertibility and non-Markovianity of quantum dynamical maps
Creators: name: Jagadish, Vinayak
name: Srikanth, R.
name: Petruccione, Francesco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We identify two broad types of noninvertibilities in quantum dynamical maps, one necessarily associated with CP indivisibility and one not so. We study the production of (non-)Markovian, invertible maps by the process of mixing noninvertible Pauli maps, and quantify the fraction of the same. The memory kernel perspective appears to be less transparent on the issue of invertibility than the approaches based on maps or master equations. Here we consider a related and potentially helpful issue: the identification of criteria of parameterized families of maps leading to the existence of a well-defined semigroup limit.
description: 7 pages, 2 figures
Phase Space Energization of Ions in Oblique Shocks
Creators: name: Juno, James
name: Brown, Collin R.
name: Howes, Gregory G.
name: Haggerty, Colby C.
name: TenBarge, Jason M.
name: Wilson, Lynn B.
name: Caprioli, Damiano
name: Klein, Kristopher G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Examining energization of kinetic plasmas in phase space is a growing topic of interest, owing to the wealth of data in phase space compared to traditional bulk energization diagnostics. Via the field-particle correlation (FPC) technique and using multiple means of numerically integrating the plasma kinetic equation, we have studied the energization of ions in phase space within oblique collisionless shocks. The perspective afforded to us with this analysis in phase space allows us to characterize distinct populations of energized ions. In particular, we focus on ions which reflect multiple times off the shock front through shock-drift acceleration, and how to distinguish these different reflected populations in phase space using the FPC technique. We further extend our analysis to simulations of three-dimensional shocks undergoing more complicated dynamics, such as shock ripple, to demonstrate the ability to recover the phase space signatures of this energization process in a more general system. This work thus extends previous applications of the FPC technique to more realistic collisionless shock environments, providing stronger evidence of the technique's utility for simulation, laboratory, and spacecraft analysis.
description: 9 pages, 5 figures
Hubble Space Telescope transmission spectroscopy for the temperate sub-Neptune TOI-270d: a possible hydrogen-rich atmosphere containing water vapour
Creators: name: Mikal-Evans, Thomas
name: Madhusudhan, Nikku
name: Dittmann, Jason
name: Guenther, Maximilian N.
name: Welbanks, Luis
name: Van Eylen, Vincent
name: Crossfield, Ian J. M.
name: Daylan, Tansu
name: Kreidberg, Laura
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: TOI-270d is a temperate sub-Neptune discovered by the Transiting Exoplanet Survey Satellite (TESS) around a bright (J=9.1mag) M3V host star. With an approximate radius of 2RE and equilibrium temperature of 350K, TOI-270d is one of the most promising small exoplanets for atmospheric characterisation using transit spectroscopy. Here we present a primary transit observation of TOI-270d made with the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) spectrograph across the 1.126-1.644 micron wavelength range, and a 95% credible upper limit of $8.2 \times 10^{-14}$ erg s$^{-1}$ cm$^{-2}$ A$^{-1}$ arcsec$^{-2}$ for the stellar Ly-alpha emission obtained using the Space Telescope Imaging Spectrograph (STIS). The transmission spectrum derived from the TESS and WFC3 data provides evidence for molecular absorption by a hydrogen-rich atmosphere at 4-sigma significance relative to a featureless spectrum. The strongest evidence for any individual absorber is obtained for H2O, which is favoured at 3-sigma significance. When retrieving on the WFC3 data alone and allowing for the possibility of a heterogeneous stellar brightness profile, the detection significance of H2O is reduced to 2.8-sigma. Further observations are therefore required to robustly determine the atmospheric composition of TOI-270d and assess the impact of stellar heterogeneity. If confirmed, our findings would make TOI-270d one of the smallest and coolest exoplanets to date with detected atmospheric spectral features.
description: Accepted for publication in AAS journals on November 22, 2022 (received July 5, 2022; revised October 30, 2022)
Additional file 1: of How do third sector organisations use research and other knowledge? A systematic scoping review
Creators: name: Hardwick, Rebecca
name: Anderson, Rob
name: Cooper, Chris
Publisher: name: Figshare
Year: 2015
Subjects: subject: Medicine
subject: Developmental Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Identification of Studies.
Covariant Lyapunov Vectors and Finite-Time Normal Modes for Geophysical Fluid Dynamical Systems
Creators: name: Frederiksen, Jorgen S
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Dynamical vectors characterizing instability and applicable as ensemble perturbations for prediction with geophysical fluid dynamical models are analysed. The relationships between covariant Lyapunov vectors (CLVs), orthonormal Lyapunov vectors (OLVs), singular vectors (SVs), Floquet vectors and finite-time normal modes (FTNMs) are examined for periodic and aperiodic systems. In the phase-space of FTNM coefficients, SVs are found to equate with unit norm FTNMs at certain times. In the long-time limit, when SVs approach OLVs, the Oseledec theorem and the relationships between OLVs and CLVs are used to connect CLVs to FTNMs in this phase-space. The covariant properties of both the CLVs, and the FTNMs, together with their phase-space independence, and the norm independence of global Lyapunov exponents and FTNM growth rates, establishes their asymptotic convergence. Conditions on the dynamical systems for the validity of these results, particularly ergodicity, boundedness and non-singular FTNM characteristic matrix and propagator, are documented. Systems with nondegenerate OLVs, and with degenerate Lyapunov spectrum as is the rule in the presence of waves such as Rossby waves, are examined, and efficient numerical methods for the calculation of leading CLVs proposed. Norm independent finite-time versions of the Kolmogorov-Sinai entropy production and Kaplan-Yorke dimension are presented.
description: 38 pages, no figures
Partially Penalized Immersed Finite Element Methods for Elliptic Interface Problems
Creators: name: Lin, Tao
name: Lin, Yanping
name: Zhang, Xu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This article presents new immersed finite element (IFE) methods for solving the popular second order elliptic interface problems on structured Cartesian meshes even if the involved interfaces have nontrivial geometries. These IFE methods contain extra stabilization terms introduced only at interface edges for penalizing the discontinuity in IFE functions. With the enhanced stability due to the added penalty, not only these IFE methods can be proven to have the optimal convergence rate in the H1-norm provided that the exact solution has sufficient regularity, but also numerical results indicate that their convergence rates in both the H1-norm and the L2-norm do not deteriorate when the mesh becomes finer which is a shortcoming of the classic IFE methods in some situations. Trace inequalities are established for both linear and bilinear IFE functions that are not only critical for the error analysis of these new IFE methods, but also are of a great potential to be useful in error analysis for other IFE methods.
Additional file 4: of Transgene silencing of sucrose synthase in alfalfa (Medicago sativa L.) stem vascular tissue suggests a role for invertase in cell wall cellulose synthesis
Creators: name: Samac, Deborah
name: Bucciarelli, Bruna
name: Miller, Susan
name: S. Yang
name: OâRourke, Jamie
name: Sanghyun Shin
name: Vance, Carroll
Publisher: name: Figshare
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Cell wall content of control (M22) and the PEPC7-P4::MsSUS transformants (M17, M18). (DOCX 64Â kb)