cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-Floquet engineering in periodically driven non-Hermitian systems
Creators: name: Wang, Huan-Yu
name: Zhao, Xiao-Ming
name: Zhuang, Lin
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Floquet engineering, modulating quantum systems in a time periodic way, lies at the central part for realizing novel topological dynamical states. Thanks to the Floquet engineering, various new realms on experimentally simulating topological materials have emerged. Conventional Floquet engineering, however, only applies to time periodic non-dissipative Hermitian systems, and for the quantum systems in reality, non-Hermitian process with dissipation usually occurs. So far, it remains unclear how to characterize topological phases of periodically driven non-Hermitian systems via the frequency space Floquet Hamiltonian. Here, we propose the non-Floquet theory to identify different Floquet topological phases of time periodic non-Hermitian systems via the generation of Floquet band gaps in frequency space. In non-Floquet theory, the eigenstates of non-Hermitian Floquet Hamiltonian are temporally deformed to be of Wannier-Stark localization. Remarkably, we show that different choices of starting points of driving period can result to different localization behavior, which effect can reversely be utilized to design detectors of quantum phases in dissipative oscillating fields. Our protocols establish a fundamental rule for describing topological features in non-Hermitian dynamical systems and can find its applications to construct new types of Floquet topological materials.
Self consistent transfer operators. Invariant measures, convergence to equilibrium, linear response and control of the statistical properties
Creators: name: Galatolo, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We describe a general approach to the theory of self consistent transfer operators. These operators have been introduced as tools for the study of the statistical properties of a large number of all to all interacting dynamical systems subjected to a mean field coupling. We consider a large class of self consistent transfer operators and prove general statements about existence of invariant measures, speed of convergence to equilibrium, statistical stability and linear response. While most of the results presented in the paper are valid in a weak coupling regime, the existence results for the invariant measures we show also hold outside the weak coupling regime. We apply the general statements to examples of different nature: coupled continuous maps, coupled expanding maps, coupled systems with additive noise, systems made of \emph{different maps }coupled by a mean field interaction and other examples of self consistent transfer operators not coming from coupled maps. We also consider the problem of finding the optimal coupling between maps in order to change the statistical properties of the system in a prescribed way.
description: Careful revision, some contents added
Xylocopa aestuans Linn.
Creators: name: Smith, F.
Publisher: name: Zenodo
Year: 1859
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Xylocopa
Xylocopa aestuans

description: 1. Xylocopa aestuans, Linn.
Syst. Nat. i. p. 961, 53 [[queen]]; St. - Farg.
Hym. ii. p. 193. 36 [[male]] [[queen]].
Hab. Aru; India; Singapore; Celebes.
description: Published as part of Smith, F., 1859, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the Islands of Aru and Key., pp. 132-158 in Journal of the Proceedings of the Linnean Society of London, Zoology 3 on page 135
Slow localized patterns in singularly perturbed 2-component reaction-diffusion equations
Creators: name: Doelman, Arjen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Localized patterns in singularly perturbed reaction-diffusion equations typically consist of slow parts -- in which the associated solution follows an orbit on a slow manifold in a reduced spatial dynamical system -- alternated by fast excursions -- in which the solution jumps from one slow manifold to another, or back to the original slow manifold. In this paper we consider the existence and stability of stationary and traveling slow localized patterns that do not exhibit such jumps, i.e. that are completely embedded in a slow manifold of the singularly perturbed spatial dynamical system. These patterns have rarely been considered in the literature, for two reasons: (i) in the classical Gray-Scott/Gierer-Meinhardt type models that dominate the literature, the flow on the slow manifold is typically linear and thus cannot exhibit homoclinic pulse or heteroclinic front solutions; (ii) the slow manifolds occurring in the literature are typically `vertical' -- i.e. given by $u \equiv u_0$, where $u$ is the fast variable -- so that the stability problem is determined by a simple (decoupled) scalar equation. The present research concerns a general system of singularly perturbed reaction-diffusion equations and is motivated by several explicit ecosystem models that do give rise to non-vertical normally hyperbolic slow manifolds on which the flow may exhibit both homoclinic and heteroclinic orbits -- that correspond to either stationary or traveling localized patterns. The associated spectral stability problems are at leading order given by a nonlinear, but scalar, eigenvalue problem with Sturm-Liouville characteristics and we establish that homoclinic pulse patterns are typically unstable, while heteroclinic fronts can either be stable or unstable. However, we also show that homoclinic pulse patterns that are asymptotically close to a heteroclinic cycle may be stable.
description: 61 pages, 10 figures
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.10.1951, erstellt am Skalnate Pleso Observatorium
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage am Skalnate Pleso Observatorium. Es sind zudem statistische Angaben für die Bestimmung der Fleckenrelativzahl notiert. Instrument: unbekannt, Sonnenbild D = 25 cm
Unification of L$_μ$-L$_τ$ and the standard model gauge group
Creators: name: Sato, Joe
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter we show a kind of \mt gauge symmetry can be unified into a simple group with the standard model gauge symmetry in the context of coset space unification. We also discuss some implication from one of this kind of unification.
description: 4 pages, no figure, Some discussion added
ESATT - Standards of Ethical Conduct and Behaviour
Creators: name: Manca, Marco
name: Cognetti, Salvatore
name: Paoli, Antonio
name: Verel, Gene Elizabeth
Publisher: name: Zenodo
Year: 2020

description: This document aims to outline the European Society of Athletic Training and Therapy’s standards for ethical conduct and behaviour for registered practitioners and members of the Society. Inspiration has been taken from The National Athletic Trainers’ Association and British Association of Sport Rehabilitators’ respective codes of ethics.
Performance evaluation report of TC pilot
Creators: name: Canepa, Alessandro
name: Fité, Carla
name: De Sabbata, Piero
name: Ciaccio, Gessica
name: Valentina, Fantin
name: Cortesi, Sara
Publisher: name: Zenodo
Year: 2024

description: D5.6 reports the key findings, lessons learned and recommendations from the demonstration of TRICK in the textile/clothing pilot, including their broader implications for stakeholders and public policies.The primary goal of the TRICK project is to provide a comprehensive roadmap for implementing traceability and transparency in circular industries, granting the collection, management and thrasnfer through the value chain of reliable data. This involves supporting service standardization, enhancing data collection and sharing, and creating a robust platform for interoperability of different blockchain solutions. The D5.6 deliverable specifically evaluates the TC pilot's performance and its positive impact on the scenarios defined in D1.2 and on the stakeholders, including manufacturers, consumers, researchers, retailers, brands, service providers, and policymakers. The evaluation compares the state before and after the pilot's implementation, assessing the effectiveness and challenges faced.
Resonant and near-resonant internal wave triads for non-uniform stratifications. Part 2: Vertically bounded domain with mild-slope bathymetry
Creators: name: Gururaj, Saranraj
name: Guha, Anirban
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Weakly nonlinear internal wave-wave interaction is a key mechanism that cascades energy from large to small scales, leading to ocean turbulence and mixing. Oceans typically have a non-uniform density stratification profile; moreover, submarine topography leads to a spatially varying ocean depth ($h$). Under these conditions and assuming mild-slope bathymetry, we employ multiple-scale analysis to derive the wave amplitude equations for triadic- and self-interactions. The waves are assumed to have a slowly (rapidly) varying amplitude (phase) in space and time. For uniform stratifications, the horizontal wavenumber ($k$) condition for waves ($1$,$2$,$3$), given by ${k}_{(1,a)}+{k}_{(2,b)}+{k}_{(3,c)}=0$, is unaffected as $h$ is varied, where $(a,b,c)$ denote the modenumber. Moreover, the nonlinear coupling coefficients (NLC) are proportional to $1/h^2$, implying that triadic waves grow faster while travelling up a seamount. For non-uniform stratifications, triads that do not satisfy the condition $a=b=c$ may not satisfy the horizontal wavenumber condition as $h$ is varied, and unlike uniform stratification, the NLC may not decrease (increase) monotonically with increasing (decreasing) $h$. NLC, and hence wave growth rates for both triads and self-interactions, can also vary rapidly with $h$. The most unstable daughter wave combination of a triad with a mode-1 parent wave can also change for relatively small changes in $h$. We also investigate higher-order self-interactions in the presence of a monochromatic, small amplitude bathymetry; here the bathymetry behaves as a zero frequency wave. We derive the amplitude evolution equations and show that higher-order self-interactions might be a viable mechanism of energy cascade.
description: Accepted in the Journal of Fluid Mechanics
Sonnenfleckenzeichnung Nr. 17943.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.10.1951, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung Nr. 17995.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.12.1951, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.10.1951, erstellt von Wolfgang Gleissberg an der Universitätssternwarte Istanbul
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage am Istanbul Universitesi Observatuari, Beyazit (Istanbul). Instrument: Zeiss Refraktor Teleskop (Öffnung 130 mm, f = 2000 mm, projiziertes Sonnenbild D = 25 cm)
BIGDML: Towards Exact Machine Learning Force Fields for Materials
Creators: name: Sauceda, Huziel E.
name: Gálvez-González, Luis E.
name: Chmiela, Stefan
name: Paz-Borbón, Lauro Oliver
name: Müller, Klaus-Robert
name: Tkatchenko, Alexandre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Machine Learning (cs.LG)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Machine-learning force fields (MLFF) should be accurate, computationally and data efficient, and applicable to molecules, materials, and interfaces thereof. Currently, MLFFs often introduce tradeoffs that restrict their practical applicability to small subsets of chemical space or require exhaustive datasets for training. Here, we introduce the Bravais-Inspired Gradient-Domain Machine Learning (BIGDML) approach and demonstrate its ability to construct reliable force fields using a training set with just 10-200 geometries for materials including pristine and defect-containing 2D and 3D semiconductors and metals, as well as chemisorbed and physisorbed atomic and molecular adsorbates on surfaces. The BIGDML model employs the full relevant symmetry group for a given material, does not assume artificial atom types or localization of atomic interactions and exhibits high data efficiency and state-of-the-art energy accuracies (errors substantially below 1 meV per atom) for an extended set of materials. Extensive path-integral molecular dynamics carried out with BIGDML models demonstrate the counterintuitive localization of benzene--graphene dynamics induced by nuclear quantum effects and allow to rationalize the Arrhenius behavior of hydrogen diffusion coefficient in a Pd crystal for a wide range of temperatures.
description: 15 pages, 8 figures, development of methodology and applications
Saropoda bombiformis Smith
Creators: name: Smith, F.
Publisher: name: Zenodo
Year: 1859
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Saropoda
Saropoda bombiformis

description: 1. Saropoda bombiformis, Smith
, Cat. Hym. Ins. pt. 2. p. 318. 6.
Hab. Aru; Australia (Richmond River).
description: Published as part of Smith, F., 1859, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the Islands of Aru and Key., pp. 132-158 in Journal of the Proceedings of the Linnean Society of London, Zoology 3 on page 135
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.12.1951, erstellt von L. am Skalnate Pleso Observatorium
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage am Skalnate Pleso Observatorium. Es sind zudem statistische Angaben für die Bestimmung der Fleckenrelativzahl notiert. Instrument: unbekannt, Sonnenbild D = 25 cm
Understanding the Coupling Mechanism of Gold Nanostructures by Finite-Difference Time-Domain Method
Creators: name: Sahu, Aditya K.
name: Raj, Satyabrata
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Gold nanoparticle assemblies show a strong plasmonic response due to the combined effects of the individual nanoparticles' plasmon modes. Increasing the number of nanoparticles in structured assemblies leads to significant shifts in the optical and physical properties. We use Finite-Difference Time-Domain (FDTD) simulations to analyze the electromagnetic response of structurally ordered gold nanorods in monomer and dimer configurations. The plasmonic coupling between nanorods in monomers or dimers configurations provides a unique technique for tuning the spectrum intensity, spatial distribution, and polarisation of local electric fields within and surrounding nanostructures. Our study shows an exponential coupling behavior when two gold nanorods are assembled in end-to-end and side-by-side dimer configurations with a small separation distance. The maximum electric field in the gaps between adjacent nanorods in end-to-end dimer configuration describes a more significant enhancement factor than the individual gold nanorod. Our FDTD simulation on dimer in end-to-end assembly for small separation distance up to ~ 40 nm can well explain the observed experimental growth dynamics of gold nanorods.
description: 17 pages, 6 figures
ИЗМЕНЕНИЕ ХИМИЧЕСКИХ И МИКРОБИОЛОГИЧЕСКИХ СВОЙСТВ ПОЧВЫ ПРИ АНТРОПОГЕННОМ ВОЗДЕЙСТВИИ В ПОЛЕВОМ СЕВООБОРОТЕ
Creators: name: АСЕЕВА Т.А.
name: САВЧЕНКО Н.Е.
name: ФЕДОРОВА Т.Н.
name: ТИШКОВА А.Г.
name: СЕЛЕЗНЕВА Н.А.
Publisher: name: Достижения науки и техники АПК
Year: 2020
Subjects: ПЛОДОРОДИЕ
ГУМУС
ФИЗИКО-ХИМИЧЕСКИЕ СВОЙСТВА
АГРОЦЕНОЗ
ТРАНСФОРМАЦИЯ
УДОБРЕНИЯ
НИТРИФИКАТОРЫ
АММОНИФИКАТОРЫ
ПОЧВА
СРЕДНЕЕ ПРИАМУРЬЕ
FERTILITY
HUMUS
PHYSICOCHEMICAL PROPERTIES
AGROCENOSIS
TRANSFORMATION
FERTILIZERS
NITRIFIERS
AMMONIFIERS
SOIL
MIDDLE AMUR REGION

description: Длительная интенсивная антропогенная нагрузка на почву при сельскохозяйственном использовании приводит к истощению минеральных запасов, изменению типа гумусообразования и микробного сообщества, по сравнению с природными экосистемами. Исследования проводили с целью определения влияния длительного антропогенного воздействия на трансформацию химических и микробиологических свойств почв при сельскохозяйственном использовании. Работу выполняли в длительных стационарных опытах, заложенных в 1963-1965 гг. в Хабаровском крае. Почва лугово-бурая тяжелосуглинистая с кислой реакцией среды и низким естественным плодородием. Дифференциация агрохимических показателей в ее пахотном слое происходила под влиянием различных систем и видов удобрений (последействие органических удобрений и извести, возрастающие дозы минеральных удобрений). В исследуемых почвах обеспеченность фосфором варьировала от средней -в природных экосистемах, до низкой в вариантах с двойным фоном минеральных удобрений и очень низкой в варианте без удобрений. Увеличение отношения гуминовых кислот к фульвокислотам с 0,58 в природной экосистеме до 1,06 агроценозах и коэффициента минерализации с 1,97 до 6,61 соответственно свидетельствует о том, что скорость процессов трансформации органического вещества в почве нарастает при усилении антропогенной нагрузки. Длительное сельскохозяйственное использование оказало негативное влияние на численность микроорганизмов, населяющих почву агроценоза: содержание аммонификаторов снизилось в среднем в 10 раз, амилолитиков - в 4,7 раза, грибов - в 3,8 раза. Применение минеральных удобрений способствует некоторому усилению биологической активности почвы, по сравнению с вариантом без их использования, численность амилолитической микрофлоры возрастает в 3 раза, аммонифицирующей - в 1,4 раза.
ВЛИЯНИЕ ДЛИТЕЛЬНОЙ АНТРОПОГЕННОЙ НАГРУЗКИ НА ИЗМЕНЕНИЕ АГРОФИЗИЧЕСКИХ И ФИЗИКО-ХИМИЧЕСКИХ СВОЙСТВ СЕЗОННО-МЕРЗЛОТНЫХ ПОЧВ ХАБАРОВСКОГО КРАЯ
Creators: name: ХОМЕНОК Г.П.
name: ЮРЧЕНКО Т.С.
name: РУБЦОВ Л.М.
Publisher: name: Достижения науки и техники АПК
Year: 2020
Subjects: СЕЗОННО-МЕРЗЛОТНАЯ ПОЧВА
АНТРОПОГЕННАЯ НАГРУЗКА
АГРОФИЗИЧЕСКИЕ СВОЙСТВА
АГРОХИМИЧЕСКИЕ СВОЙСТВА
СЕВООБОРОТ
СРЕДНЕЕ ПРИАМУРЬЕ
SEASONAL PERMAFROST SOIL
ANTHROPOGENIC LOAD
AGROPHYSICAL PROPERTIES
AGROCHEMICAL PROPERTIES
CROP ROTATION
MIDDLE AMUR REGION

description: Исследования проводили с целью изучения влияния длительной антропогенной нагрузки на агрофизические и физико-химические свойства лугово-бурой тяжелосуглинистой почвы юга Хабаровского края. Сравнение с целинным участком (лугом) осуществляли в 2019 г. по окончанию восьмой ротации севооборота, заложенного в 1963-1965 гг. Воздействие культур и их чередования на содержание водопрочных агрегатов в почве изучали в севооборотах, заложенных в 1991-1995 гг. Влияние смены вида использования на свойства почвы определяли на участке культурного долголетнего пастбища, введенного в сельскохозяйственный оборот в 1990 г. Содержание гумуса в пахотном слое исходной почвы составляло 4 % и более, реакция среды - кислая (рНсол < 4,5), гидролитическая кислотность - высокая (10.12 мг-экв./100 г), обеспеченность подвижным фосфором - низкая, обменным калием - высокая и очень высокая. Основные изменения свойств почвы при длительном сельскохозяйственном использовании происходят в верхнем 0.20 см слое. За период с 1963-1965 по 2019 гг. в полевом севообороте ее плотность, по сравнению с целинным участком, увеличилась на 0,38.0,62 г/см3, порозность снизилась на 13,0.21,9 %, содержание гумуса уменьшилось на 1,2...2,1 %, азота общего - на 014.0,29 %. Наибольшую долю водопрочных агрегатов в почве отмечали в пятипольном севообороте с клевером - 43,1 %, наименьшую в двухпольном и при бессменном возделывании кукурузы - 28,1.31,4 %. Максимальное в опыте их количество было под клевером (49,6.50,8 %). При длительном возделывании культур на месте долголетнего пастбища содержание подвижного фосфора возрастало, по сравнению с исходным, на 0,4.3,2 мг/100 г, калия - на 4,6.7,1 мг/100 г. При этом подвижный фосфор мигрировал как вниз по профилю почвы, так и по склону, а калий накапливался в верхней части пахотного слоя почвы и склона.
Landscape Correspondence of Empirical and Population Risks in the Eigendecomposition Problem
Creators: name: Li, Shuang
name: Tang, Gongguo
name: Wakin, Michael B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Spectral methods include a family of algorithms related to the eigenvectors of certain data-generated matrices. In this work, we are interested in studying the geometric landscape of the eigendecomposition problem in various spectral methods. In particular, we first extend known results regarding the landscape at critical points to larger regions near the critical points in a special case of finding the leading eigenvector of a symmetric matrix. For a more general eigendecomposition problem, inspired by recent findings on the connection between the landscapes of empirical risk and population risk, we then build a novel connection between the landscape of an eigendecomposition problem that uses random measurements and the one that uses the true data matrix. We also apply our theory to a variety of low-rank matrix optimization problems and conduct a series of simulations to illustrate our theoretical findings.
Sonnenfleckenzeichnung Nr. 17968.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.11.1951, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
On the stabilisation of locked tearing modes in ITER and other large tokamaks
Creators: name: Nies, Richard
name: Reiman, Allan H.
name: Fisch, Nathaniel J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Tearing modes in tokamaks typically rotate while small and then lock at a fixed location when larger. Research on present-day devices has focused almost exclusively on stabilisation of rotating modes, as it has been considered imperative to avoid locked modes. However, in larger devices, stabilisation during the rotating phase is made difficult by fast locking at small island widths, and large broadening of the stabilising wave-driven current profile. In contrast, the smaller island width at locking not only mitigates the deleterious consequences of locked modes, but also permits their efficient stabilisation. On large devices, it thus becomes surprisingly advantageous to allow the mode to grow and lock naturally before stabilising it, challenging the mainstream strategy of neoclassical tearing mode stabilisation during the rotating phase. Calculations indicate that a locked island stabilisation strategy should be adopted in the ITER tokamak, with a large potential impact on the fusion gain and disruptivity.
description: 27 pages, 7 figures
RF INTERFERENCE CHALLENGES IN CELLULAR NETWORKS: A COMPREHENSIVE SURVEY OF ICIC SOLUTIONS FOR OFDM DOWNLINK
Creators: name: Ahmed Mahmoud, Abdel-Halim
name: Mohamed, Ahmed El-Desouky
Publisher: name: Continental Journal
Year: 2024
Subjects: Next-generation wireless systems, Intelligent Transportation Systems (ITS), Orthogonal Frequency Division Multiplexing (OFDM), Cellular systems, Spectral efficiency

description: The evolution of wireless systems towards next-generation standards is poised to revolutionize Intelligent Transportation Systems (ITS) with a multitude of applications ranging from broadband digital communications to real-time video security. Among the proposed techniques for enhancing wireless communication, Orthogonal Frequency Division Multiplexing (OFDM) stands out for its ability to transmit data efficiently over challenging channels while maintaining high data rates and low complexity. Next-generation cellular systems hold the promise of achieving substantially higher cell throughput and enhanced spectral efficiency compared to existing technologies like GSM, EDGE, and High-Speed Packet Access R.7 (HSPA+). This paper explores the potential of next-generation wireless systems in facilitating advanced applications for ITS, highlighting the role of OFDM and advancements in cellular technologies
Elliptic Racah polynomials
Creators: name: van Diejen, Jan Felipe
name: Görbe, Tamás
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 42C05 (Primary) 33C47, 33E10, 47B36 (Secondary)

description: Upon solving a finite discrete reduction of the difference Heun equation, we arrive at an elliptic generalization of the Racah polynomials. We exhibit the three-term recurrence relation and the orthogonality relations for these elliptic Racah polynomials. The well-known $q$-Racah polynomials of Askey and Wilson are recovered as a trigonometric limit.
description: 18 pages
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.11.1951, erstellt am Sonnenobservatorium Kanzelhöhe, Kärnten
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage im Sonnenobservatorium Kanzelhöhe in Sattendorf, Österreich. Instrument: Heliostat mit Refraktor Eigenbau (Öffnung 110mm, f = 1650mm, projiziertes Sonnenbild D = 25cm)
Sonnenfleckenzeichnung Nr. 17933.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.09.1951, erstellt von Adolf Lemans
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Throughput Maximization Leveraging Just-Enough SNR Margin and Channel Spacing Optimization
Creators: name: Chen, Cao
name: Zhou, Fen
name: Liu, Yuanhao
name: Xiao, Shilin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Flexible optical network is a promising technology to accommodate high-capacity demands in next-generation networks. To ensure uninterrupted communication, existing lightpath provisioning schemes are mainly done with the assumption of worst-case resource under-provisioning and fixed channel spacing, which preserves an excessive signal-to-noise ratio (SNR) margin. However, under a resource over-provisioning scenario, the excessive SNR margin restricts the transmission bit-rate or transmission reach, leading to physical layer resource waste and stranded transmission capacity. To tackle this challenging problem, we leverage an iterative feedback tuning algorithm to provide a just-enough SNR margin, so as to maximize the network throughput. Specifically, the proposed algorithm is implemented in three steps. First, starting from the high SNR margin setup, we establish an integer linear programming model as well as a heuristic algorithm to maximize the network throughput by solving the problem of routing, modulation format, forward error correction, baud-rate selection, and spectrum assignment. Second, we optimize the channel spacing of the lightpaths obtained from the previous step, thereby increasing the available physical layer resources. Finally, we iteratively reduce the SNR margin of each lightpath until the network throughput cannot be increased. Through numerical simulations, we confirm the throughput improvement in different networks and with different baud-rates. In particular, we find that our algorithm enables over 20\% relative gain when network resource is over-provisioned, compared to the traditional method preserving an excessive SNR margin.
description: submitted to IEEE JLT, Jul. 17th, 2021. 14 pages, 8 figures
Can Thorne-$\dot{\textrm{Z}}$ytkow Objects source GW190814-type events?
Creators: name: Cholis, Ilias
name: Kritos, Konstantinos
name: Garfinkle, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The LIGO-Virgo collaboration reported in their third run the coalescence event GW190814 involving a 2.6 $M_{\odot}$ object with a 23 $M_{\odot}$ black hole. In this letter we study the conditions under which Thorne-$\dot{\textrm{Z}}$ytkow objects (T$\dot{\textrm{Z}}$Os) can be connected to that type of events. We evaluate first the rate of appearance of T$\dot{\textrm{Z}}$Os in the local Universe. Under the assumption that T$\dot{\textrm{Z}}$Os eventually become low mass gap black holes we evaluate how those black holes end up in binaries with other stellar mass black holes and compare to the reported rate for GW190814-type of events (1-23 $\textrm{Gpc}^{-3} \textrm{yr}^{-1}$). We find that T$\dot{\textrm{Z}}$Os in dense stellar clusters can not explain the LIGO-Virgo rate without a T$\dot{\textrm{Z}}$Os population in the field providing a dominant contribution. We also find that T$\dot{\textrm{Z}}$Os formed within hierarchical triple systems in the field with the third more distant star being the progenitor of a stellar mass black hole, may be able to give a rate comparable to that of GW190814-type events. In that case, future observations should discover mergers between stellar mass and low mass gap black holes, with the lower mass spanning the entire low mass gap range.
description: 5 pages and 2 figures
Microtissues Demonstrate Properties of Wound Healing in 3D
Creators: name: George, Heather
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Tissue engineering

description: An essential stage of repair for a healing wound is the proliferation of cells in the damaged space. Cells such as fibroblasts, grow and migrate to aid in construction of new tissue and to close the wound. Current methods of studying fibroblast proliferation in wound healing include a 2D wound healing assay in which a cell monolayer is scratched, and the cells migrate into the pseudo-wound. However, this lacks the 3D architecture of a physiological wound. Current 3D models of wound healing often rely on the use of a preexisting matrix for structural assistance, however an isolated system of cell growth without requirement of structural aid may gather new insights on intercellular behavior and mechanical properties. Additionally, we to desire to fabricate a high through-put and easy to use 3D wound healing model than currently offered. Our engineering objective is to create a novel 3D model of wound healing.
 This project aims to optimize fibroblast adhesion and proliferation for 3D microtissue fabrication by altering surface and extracellular matrix (ECM) properties to SU-8 scaffolding. Additionally, we consider the effect of different geometries on cell proliferation and cellular stresses/strains, fibronectin production as pseudo-wounds close, and make comparisons to intercellular cancer behavior. Our results show around a 66% decrease in overall culture time required for the microtissues to reach full confluency. Varying geometries in the tessellated design have revealed structural changes in the actin cytoskeleton formation of fibroblasts, and increased fibronectin production along edges of tensioned cells preparing to “close” the wound. When compared to human breast cancer cells, the cancer cells lack the ability to make critical cell to cell junctions that we observe in fibroblasts, noting the characteristic that cancer is like a wound that never heals.
ЭФФЕКТИВНОСТЬ ПОЧВОЗАЩИТНЫХ МЕРОПРИЯТИЙ ПРИ ВОЗДЕЛЫВАНИИ ОЗИМОЙ ПШЕНИЦЫ НА ЭРОЗИОННО-ОПАСНЫХ СКЛОНАХ
Creators: name: НЕЖИНСКАЯ Е.Н.
name: ТАРАДИН С.А.
name: РЫЧКОВА М.И.
name: ГАЕВАЯ Э.А.
name: ИЛЬИНСКАЯ И.Н.
Publisher: name: Достижения науки и техники АПК
Year: 2020
Subjects: ОЗИМАЯ ПШЕНИЦА (TRITICUM AESTIVUM L.)
ЭРОЗИОННО-ОПАСНЫЙ СКЛОН
СПОСОБ ОСНОВНОЙ ОБРАБОТКИ
ПРЕДШЕСТВЕННИК
УДОБРЕНИЯ
УРОЖАЙНОСТЬ
ЭФФЕКТИВНОСТЬ
БИОЭНЕРГЕТИЧЕСКАЯ ОЦЕНКА
WINTER WHEAT (TRITICUMAESTIVUM L.)
EROSION THREATENING SLOPE
PRIMARY TILLAGE METHOD
FORECROP
FERTILIZERS
YIELD
EFFICIENCY
BIOENERGY ASSESSMENT

description: Исследования проводили с целью агрономической и биоэнергетической оценки эффективности элементов технологии возделывания озимой пшеницы в севооборотах на черноземах обыкновенных в условиях эрозионно-опасного склона. Работу выполняли в 2010-2019 гг в Ростовской области в стационарном полевом опыте, схема которого предполагала изучение следующих вариантов: предшественник (фактор А) - чистый пар, озимая пшеница, соя, кукуруза на зерно; способ обработки почвы (фактор В) - отвальная (вспашка), безотвальная (чизельная); уровень минерального питания - без удобрений, N46Р24К30, N84Р30К48 (в среднем на 1 га севооборотной площади). Максимальная в опыте урожайность зерна озимой пшеницы (5,4i6 т/га) достигнута при возделывании после чистого пара на фоне безотвальной обработки почвы. В этом варианте она была на 4 % выше, чем после вспашки. Применение удобрений в норме N6Р24Кз0 способствовало росту урожайности озимой пшеницы по пару на 13,5 %, N84Р30К48 - на 25,0 %. Наибольшая окупаемость удобрений дополнительным урожаем отмечена по предшественнику соя при чизельной обработке почвы на фоне внесения N84Р30К48, она составила 12,0.12,3 кг/кг Энергетическая эффективность при чизельной обработке в зависимости от предшественника превышала величину этого показателя при вспашке на 2,2...3,7 %. На эрозионно-опасных склонах наиболее эффективное сочетание изучаемых вариантов отмечено при возделывании озимой пшеницы после сои при чизельной обработке почвы на фоне внесения N4Р30К48. Его использование обеспечило увеличение выхода зерна, по отношению к варианту без удобрений, на 1,6 т/га, экономию горюче-смазочных материалов, по сравнению с возделыванием после чистого пара, до 40 %. Окупаемость действующего вещества удобрений прибавкой урожая при этом достигала 12,3 кг/кг, затраты совокупной энергии были наименьшими (18,5 ГДж/га), а окупаемость энергетических затрат накопленной в урожае зерна энергией - самой высокой (10,13 ГДж/га).
Anthophora zonata Linn.
Creators: name: Smith, F.
Publisher: name: Zenodo
Year: 1859
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Anthophora
Anthophora zonata

description: 1. Anthophora zonata, Linn.
Syst. Nat.
Hab. Aru Island; Celebes; Ceylon; India; Borneo; Hong-Kong; Shanghai; Philippine Islands.
description: Published as part of Smith, F., 1859, Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the Islands of Aru and Key., pp. 132-158 in Journal of the Proceedings of the Linnean Society of London, Zoology 3 on page 135
Learning Rays via Deep Neural Network in a Ray-based IPDG Method for High-Frequency Helmholtz Equations in Inhomogeneous Media
Creators: name: Yeung, Tak Shing Au
name: Cheung, Ka Chun
name: Chung, Eric T.
name: Fu, Shubin
name: Qian, Jianliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We develop a deep learning approach to extract ray directions at discrete locations by analyzing highly oscillatory wave fields. A deep neural network is trained on a set of local plane-wave fields to predict ray directions at discrete locations. The resulting deep neural network is then applied to a reduced-frequency Helmholtz solution to extract the directions, which are further incorporated into a ray-based interior-penalty discontinuous Galerkin (IPDG) method to solve the Helmholtz equations at higher frequencies. In this way, we observe no apparent pollution effects in the resulting Helmholtz solutions in inhomogeneous media. Our 2D and 3D numerical results show that the proposed scheme is very efficient and yields highly accurate solutions.
description: 30 pages
ПОТРЕБЛЕНИЕ АЗОТА ЯРОВОЙ ПШЕНИЦЕЙ НА РАЗНЫХ УРОВНЯХ ОБЕСПЕЧЕННОСТИ ПОЧВЫ ПОДВИЖНЫМ ФОСФОРОМ
Creators: name: БАНЕЦКАЯ Е.В.
name: НАУМЧЕНКО Е.Т.
Publisher: name: Достижения науки и техники АПК
Year: 2020
Subjects: ПШЕНИЦА (TRITICUM AESTIVUM L.)
МИНЕРАЛЬНОЕ ПИТАНИЕ
УДОБРЕНИЯ
АММОНИФИКАТОРЫ АЗОТА
ИММОБИЛИЗАТОРЫ АЗОТА
ПЛОДОРОДИЕ ПОЧВЫ
WHEAT (TRITICUM AESTIVUM L.)
MINERAL NUTRITION
FERTILIZERS
NITROGEN AMMONIFIERS
NITROGEN IMMOBILIZERS
SOIL FERTILITY

description: Исследования проводили в 2014-2018 гг. на луговой черноземовидной почве в Амурской области в стационарном полевом опыте по изучению эффективности органических и минеральных удобрений, заложенном в 1962-1964 гг. в севообороте овес - соя -пшеница - соя - пшеница. В результате длительного систематического применения удобрений в почве опыта сложилась низкая (27.35 мг/кг), средняя (37.50 мг/кг) и повышенная (более 55 мг/кг) обеспеченность подвижным (по Кирсанову) фосфором. Цель работы - определить влияние длительного применения удобрений на урожайность пшеницы и размеры потребления азота при разной обеспеченности почвы подвижным фосфором. Из минеральных удобрений применяли двойной суперфосфат, аммиачную селитру и хлористый калий; из органических - полуперепревший навоз крупного рогатого скота. В почвенных образцах определяли содержание подвижного фосфора, аммонийного и нитратного азота, численность микроорганизмов. Изучение эффективности прямого действия азотных удобрений на сорте пшеницы Арюна (3-я культура севооборота) проводили в вариантах с внесением N30 перед посевом и без использования азота по различным фонам обеспеченности почвы подвижным фосфором; последействие - в аналогичных вариантах опыта на пшенице, замыкающей севооборот. Внесение азотных удобрений в дозе N30 стимулировало развитие аммонифицирующих бактерий, численность которых превышала контроль без удобрений в 1,9.2,3 раза, увеличивало содержание нитратного и аммонийного азота в почве на 47.72 %, коэффициенты их использования - в 1,8.2,5 раза. Урожайность пшеницы возрастала на 0,21...0,76 т/га в соответствии с уровнем обеспеченности почвы подвижным фосфором. В последействии удобрений на фоне повышенной обеспеченности подвижным фосфором содержание подвижного азота в почве увеличивалось, относительно контроля, на 11 %, коэффициент его использования - на 18 %, а урожайность пшеницы - на 0,50 т/га.
Global boundedness of solutions to a parabolic-parabolic chemotaxis system with local sensing in higher dimensions
Creators: name: Fujie, Kentaro
name: Senba, Takasi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B45 (Primary) 35K57, 35Q92, 92C17 (Secondary)

description: This paper deals with classical solutions to the parabolic-parabolic system \begin{align*} \begin{cases} u_t=Δ(γ(v) u ) &\mathrm{in}\ Ω\times(0,\infty), \\[1mm] v_t=Δv - v + u &\mathrm{in}\ Ω\times(0,\infty), \\[1mm] \displaystyle \frac{\partial u}{\partial ν} = \frac{\partial v}{\partial ν} = 0 &\mathrm{on}\ \partialΩ\times (0,\infty), \\[1mm] u(\cdot,0)=u_0, \ v(\cdot,0)=v_0 &\mathrm{in}\ Ω, \end{cases} \end{align*} where $Ω$ is a smooth bounded domain in $\mathbf{R}^n$($n \geq 3$), $γ(v)=v^{-k}$ ($k>0$) and the initial data $(u_0,v_0)$ is positive and regular. This system has striking features similar to those of the logarithmic Keller--Segel system. It is established that classical solutions of the system exist globally in time and remain uniformly bounded in time if $k \in (0,n/(n-2))$, independently the magnitude of mass. This constant $n/(n-2)$ is conjectured as the optimal range guaranteeing global existence and boundedness in the corresponding logarithmic Keller--Segel system. We will derive sufficient estimates for solutions through some single evolution equation that some auxiliary function satisfies. The cornerstone of the analysis is the refined comparison estimate for solutions, which enables us to control the nonlinearity of the auxiliary equation.
ВЛИЯНИЕ ОБЕСПЕЧЕННОСТИ РАСТЕНИЙ МИНЕРАЛЬНЫМ АЗОТОМ НА РАЗВИТИЕ СИМБИОТИЧЕСКОГО АППАРАТА И УРОЖАЙНОСТЬ СОИ
Creators: name: УРЮПИНА А.А.
name: АНУФРИЕВА И.В.
name: СИНЕГОВСКАЯ В.Т.
Publisher: name: Достижения науки и техники АПК
Year: 2020
Subjects: СОЯ (GLYCINE MAX (L) MERRILL.)
УДОБРЕНИЯ
МАССА КЛУБЕНЬКОВ
ОБЩИЙ СИМБИОТИЧЕСКИЙ ПОТЕНЦИАЛ
ПЛОЩАДЬ ЛИСТЬЕВ
УРОЖАЙНОСТЬ
SOYBEAN (GLYCINE MAX (L) MERRILL.)
FERTILIZERS
MASS OF NODULES
TOTAL SYMBIOTIC POTENTIAL
LEAF AREA
YIELD

description: Исследования проводили в 2017-2019 гг на луговых черноземовидных почвах Приамурья c целью определения влияния уровня обеспеченности растений минеральным азотом и подвижным фосфором на развитие клубеньков, формирование площади листьев и урожайность сои. Схема опыта включала следующие варианты: без удобрений (контроль); P60; N30P60; N60P90; N30P60 + 12 т/ га полуперепревшего навоза под предшествующую культуру (овёс). Погодные условия характеризовались избыточным количеством осадков, которое в период формирования бобов превышало среднемноголетние значения на 35.60 мм. Внесение повышенной дозы N60 совместно с P90 привело к снижению массы клубеньков в фазе 4-го тройчатого листа (V5) на 56 %, относительно контроля, и на 63 %, относительно варианта с P60. Ингибирующее действие азота подтверждено снижением общего симбиотического потенциала за вегетацию на 3,5.14,6 % в зависимости от дозы удобрений. К фазе формирования бобов (R4) содержание минерального азота в почве снизилось, по сравнению с фазой V5, в 2,6 раза. Возможно, по этой причине масса клубеньков в варианте N60P90 в фазе R4 была наибольшей (1107 кг/га), превысив контроль на 57 %, вариант P60 - на 18 %. При внесении P60 масса клубеньков была больше, чем в контроле, на 33 %. Установлена тесная корреляционная зависимость (R=0,95, при Ri< ит=0,88) между накоплением массы клубеньков и площадью листьев. Наибольшая площадь листьев отмечена в вариантах Р60 и N60P90.кбна была выше, чем в контроле на 56,8 % и 79,2 % соответственно. Самая низкая в опыте урожайность (2,7 т/га) зафиксирована в контроле, наибольшая - в варианте N60P90 (4,4 т/га при НСР05=0,81 т/га). Этому способствовало улучшение работы симбиотического и фотосинтетического аппаратов сои при оптимальной обеспеченности растений азотом и высокой - подвижным фосфором.
Towards a full general relativistic approach to galaxies
Creators: name: Astesiano, Davide
name: Cacciatori, Sergio L.
name: Re, Federico
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze the dynamics of a single spiral galaxy from a general relativistic viewpoint. We employ the known family of stationary axially-symmetric solutions to Einstein gravity coupled with dust in order to model the halo external to the bulge. In particular, we generalize the known results of Balasin and Grumiller, relaxing the condition of co-rotation, thus including non co-rotating dust. This further highlights the discrepancy between Newtonian theory of gravity and general relativity at low velocities and energy densities. We investigate the role of dragging in simulating dark matter effects. In particular, we show that non co-rotance further reduce the amount of energy density required to explain the rotation curves for spiral galaxies.
description: 13 pages
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.11.1951, erstellt vermutlich von Gaston Coutrez oder J. Delange am Observatoire Royal de Belgique in Uccle
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage in Uccle.
Instrument: Merz-Grubb Refraktor Teleskop (Öffnung 160 mm, f = 2450 mm, projiziertes Sonnenbild D = 25 cm)
Sonnenfleckenzeichnung Nr. 17910.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.08.1951, erstellt von Helmut Müller.
Zusätzlich ist vermerkt: Astrograph
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1951

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Poisson double structures
Creators: name: Bursztyn, Henrique
name: Cabrera, Alejandro
name: del Hoyo, Matias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We introduce Poisson double algebroids, and the equivalent concept of double Lie bialgebroid, which arise as second-order infinitesimal counterparts of Poisson double groupoids. We develop their underlying Lie theory, showing how these objects are related by differentiation and integration. We use these results to revisit Lie 2-bialgebras by means of Poisson double structures.
description: 28 pages. Dedicated to the memory of Kirill Mackenzie