cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multidimensional method-of-lines transport for atmospheric flows over steep terrain using arbitrary meshes
Creators: name: Shaw, James
name: Weller, Hilary
name: Methven, John
name: Davies, Terry
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Including terrain in atmospheric models gives rise to mesh distortions near the lower boundary that can degrade accuracy and challenge the stability of transport schemes. Multidimensional transport schemes avoid splitting errors on distorted, arbitrary meshes, and method-of-lines schemes have low computational cost because they perform reconstructions at fixed points. This paper presents a multidimensional method-of-lines finite volume transport scheme, "cubicFit", which is designed to be numerically stable on arbitrary meshes. Stability conditions derived from a von Neumann stability analysis are imposed during model initialisation to obtain stability and improve accuracy in distorted regions of the mesh, and near steeply-sloping lower boundaries. Reconstruction calculations depend upon the mesh only, needing just one vector multiply per face per time-stage irrespective of the velocity field. The cubicFit scheme is evaluated using three, idealised numerical tests. The first is a variant of a standard horizontal transport test on severely distorted terrain-following meshes. The second is a new test case that assesses accuracy near the ground by transporting a tracer at the lower boundary over steep terrain on terrain-following meshes, cut-cell meshes, and new, slanted-cell meshes that do not suffer from severe time-step constraints associated with cut cells. The third, standard test deforms a tracer in a vortical flow on hexagonal-icosahedral meshes and cubed-sphere meshes. In all tests, cubicFit is stable and largely insensitive to mesh distortions, and cubicFit results are more accurate than those obtained using a multidimensional linear upwind transport scheme. The cubicFit scheme is second-order convergent regardless of mesh distortions.
Annual Report 2018
Creators: name: Steiner, Gesine
Publisher: name: Museum für Naturkunde Berlin (MfN) - Leibniz Institute for Research on Evolution and Biodiversity
Year: 2019
Subjects: Business report

description: The Annual Report 2018 provides an overview of mueseum in numbers, such as staff, publications, institutional funding, third-party funding, number of visitors, visitors of the education programmes, loans and press response. In addition, the topics of outstanding importance for the development of the Museum für Naturkunde Berlin in 2018 will be addressed and the relevance of the museum will be presented. These topics include the financial support for the next 10 years, the science audit by the Scientific Advisory Board and the Global Summit of Research Museums.
Sonnenfleckenzeichnung Nr. 280.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.11.2004, 08:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Results from the Mentimeter sessions during IPBES-7 Stakeholder Day
Creators: name: Geschke, Jonas
Publisher: name: Museum für Naturkunde Berlin (MfN) - Leibniz Institute for Research on Evolution and Biodiversity
Year: 2019
Subjects: IPBES
stakeholder day
stakeholder engagement
participation
mentimeter

description: During the IPBES-7 Stakeholder Day, a series of participant surveys was conducted. The following slides show the visualization of the results of the surveys.
Sonnenfleckenzeichnung Nr. 33.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.02.2004, 08:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Evolution of the Sun's non-axisymmetric toroidal field
Creators: name: Martin-Belda, David
name: Cameron, Robert H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims. We aim to infer the sub-surface distribution of the Sun's non-axisymmetric azimuthal magnetic flux from observable quantities, such as the surface magnetic field and the large scale plasma flows. Methods. We have built a kinematic flux transport model of the solar dynamo based on the Babcock-Leighton framework. We constructed the source term for the poloidal field using SOLIS magnetograms spanning three solar cycles. Based on this source we calculated the azimuthal flux below the surface. The flux transport model has two free parameters which we constrain using sunspot observations from cycle 22. We compared the model results with observations from cycle 23. Results. The structure of the azimuthal field is mainly axisymmetric. The departures from axisymmetry represent, on average, ~3% of the total azimuthal flux. Owing to its relative weakness, the non-axisymmetric structure of the azimuthal field does not have a significant impact on the location in which the emergences appear or on the amount of flux contained in them. We find that the probability of emergence is a function of the ratio between the flux content of an active region and the underlying azimuthal flux.
Sonnenfleckenzeichnung Nr. 87.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.04.2004, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Vertical Beam Polarization at MAMI
Creators: name: Schlimme, B. S.
name: Achenbach, P.
name: Aulenbacher, K.
name: Baunack, S.
name: Bender, D.
name: Beričič, J.
name: Bosnar, D.
name: Correa, L.
name: Dehn, M.
name: Distler, M. O.
name: Esser, A.
name: Fonvieille, H.
name: Friščić, I.
name: Gutheil, B.
name: Herrmann, P.
name: Hoek, M.
name: Kegel, S.
name: Kohl, Y.
name: Kolar, T.
name: Kreidel, H. -J.
name: Maas, F.
name: Merkel, H.
name: Mihovilovič, M.
name: Müller, J.
name: Müller, U.
name: Nillius, F.
name: Nuck, A.
name: Pochodzalla, J.
name: Schoth, M.
name: Schulz, F.
name: Sfienti, C.
name: Širca, S.
name: Spruck, B.
name: Štajner, S.
name: Thiel, M.
name: Tioukine, V.
name: Tyukin, A.
name: Weber, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: For the first time a vertically polarized electron beam has been used for physics experiments at MAMI in the energy range between 180 and 855 MeV. The beam-normal single-spin asymmetry $A_{\mathrm{n}}$, which is a direct probe of higher-order photon exchange beyond the first Born approximation, has been measured in the reaction $^{12}\mathrm C(\vec e,e')^{12}\mathrm C$. Vertical polarization orientation was necessary to measure this asymmetry with the existing experimental setup. In this paper we describe the procedure to orient the electron polarization vector vertically, and the concept of determining both its magnitude and orientation with the available setup. A sophisticated method has been developed to overcome the lack of a polarimeter setup sensitive to the vertical polarization component.
Sonnenfleckenzeichnung Nr. 202.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.08.2004, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 82.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.04.2004, 14:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A triangular triple quantum dot with tunable tunnel couplings
Creators: name: Noiri, A.
name: Kawasaki, K.
name: Otsuka, T.
name: Nakajima, T.
name: Yoneda, J.
name: Amaha, S.
name: Delbecq, M. R.
name: Takeda, K.
name: Allison, G.
name: Ludwig, A.
name: Wieck, A. D.
name: Tarucha, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A two-dimensional arrangement of quantum dots with finite inter-dot tunnel coupling provides a promising platform for studying complicated spin correlations as well as for constructing large-scale quantum computers. Here, we fabricate a tunnel-coupled triangular triple quantum dot with a novel gate geometry in which three dots are defined by positively biasing the surface gates. At the same time, the small area in the center of the triangle is depleted by negatively biasing the top gate placed above the surface gates. The size of the small center depleted area is estimated from the Aharonov-Bohm oscillation measured for the triangular channel but incorporating no gate-defined dots, with a value consistent with the design. With this approach, we can bring the neighboring gate-defined dots close enough to one another to maintain a finite inter-dot tunnel coupling. We finally confirm the presence of the inter-dot tunnel couplings in the triple quantum dot from the measurement of tunneling current through the dots in the stability diagram. We also show that the charge occupancy of each dot and that the inter-dot tunnel couplings are tunable with gate voltages.
description: accepted on Semiconductor Science and Technology
Sonnenfleckenzeichnung Nr. 277.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.11.2004, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Nonlinear effects in gluon distribution predicted by GLR-MQ evolution equation at next-to-leading order in LHC data
Creators: name: Lalung, M.
name: Phukan, P.
name: Sarma, J. K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we have solved the nonlinear GLR-MQ evolution equation upto next-to-leading order (NLO) by considering NLO terms of the gluon-gluon splitting functions and running coupling constant $α_s(Q^2)$. Here, we have incorporated a Regge-like behaviour of gluon distribution in order to obtain a solution of the GLR-MQ equation in the range of $5 GeV^2 \leq Q^2 \leq 25 GeV^2$. We have studied the $Q^2$ evolution of the gluon distribution function $G(x,Q^2)$ and its nonlinear effects at small-x. It can be observed from our analysis that the nonlinearities increase with decrease in the correlation radius R of two interacting gluons, as expected. We have compared our result of $G(x,Q^2)$ as $Q^2$ increases and x decreases, for two different values of R, viz. R= 2 $GeV^{-1}$ and 5 $GeV^{-1}$. We have also checked the sensitivity of the Regge intercept $λ_G$ on our results. We compare our computed results with those obtained by the global analysis to parton distribution functions (PDFs) by various collaborations where LHC data have been included viz. PDF4LHC15, NNPDF3.0, ABM12 and CT14. Besides we have also shown comparison of our results with HERA PDF data viz. HERAPDF15.
description: 15 pages, 7 figures, new references added
Embedding for bulk systems using localized atomic orbitals
Creators: name: Libisch, F.
name: Marsman, M.
name: Burgdörfer, J.
name: Kresse, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an embedding approach for semiconductors and insulators based on or- bital rotations in the space of occupied Kohn-Sham orbitals. We have implemented our approach in the popular VASP software package. We demonstrate its power for defect structures in silicon and polaron formation in titania, two challenging cases for conventional Kohn-Sham density functional theory.
description: 2 figures
Sonnenfleckenzeichnung Nr. 68.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.03.2004, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Optimal continuous-variable teleportation under energy constraint
Creators: name: Lee, Jaehak
name: Park, Jiyong
name: Nha, Hyunchul
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum teleportation is one of the crucial protocols in quantum information processing. It is important to accomplish an efficient teleportation under practical conditions, aiming at a higher fidelity desirably using fewer resources. The continuous-variable (CV) version of quantum teleportation was first proposed using a Gaussian state as a quantum resource, while other attempts were also made to improve performance by applying non-Gaussian operations. We investigate the CV teleportation to find its ultimate fidelity under energy constraint identifying an optimal quantum state. For this purpose, we present a formalism to evaluate teleportation fidelity as an expectation value of an operator. Using this formalism, we prove that the optimal state must be a form of photon-number entangled states. We further show that Gaussian states are near-optimal while non-Gaussian states make a slight improvement and therefore are rigorously optimal, particularly in the low-energy regime.
description: 8 pages, 4 figures, published version
D2.1 State of Play in African DIHs: The Case of Nigeria, Uganda, Kenya and Tanzania
Creators: name: Africa Technology Business Network - ATBN
Publisher: name: AfriConEU
Year: 2022
Subjects: Africa
Europe
AfriConEU
Transcontinentalpartnership
DIHs

description: Over the last few years, digital innovation has increasingly become an important driver for Africa’s social and economic development. Digital technologies are enabling solutions to address the region’s pressing social challenges and creating a growing number of economic opportunities. At the centre of this digital transformation are innovative entrepreneurs supported by an ecosystem of investors, international development and philanthropic partners, policy makers and government actors, corporate partners, ecosystem enablers and Digital Innovation Hubs (DIHs). DIHs in particular are not only directly supporting entrepreneurs but are also playing a central role in connecting the various actors and developing the ecosystem. However, African DIHs continue to face a number of systemic challenges that are limiting their potential as catalysts for digital innovation. Building the capacity of African DIHs to play their role more effectively is therefore crucial to driving digital growth and economic development in the region.

At the same time, the digital economy presents a unique opportunity to enhance trade and economic relations between Europe and Africa. On one hand, Europe’s more advanced digital ecosystems present opportunities for transferring technological expertise and investment. On the other, Africa’s growing digital markets and youthful population provide investment and human capital opportunities for European businesses and investors. Therefore, enabling collaboration and developing stronger partnerships between European and African digital innovation ecosystems has the potential to create immense benefits for both regions.

This report examines the digital ecosystems in four African countries namely Ghana, Nigeria, Tanzania and Uganda, with the goal of identifying the challenges and opportunities for strengthening digital innovation in these countries. In light of the ongoing COVID-19 pandemic, it also seeks to understand the impacts that the pandemic has had on African digital economies. Thirdly, it looks specifically at the challenges and needs of African DIHs and provides recommendations for their capacity building. And lastly, it identifies the challenges and opportunities for transcontinental partnerships between African and European digital actors.
Optically thick envelopes around ULXs powered by accreating neutron stars
Creators: name: Mushtukov, Alexander A.
name: Suleimanov, Valery F.
name: Tsygankov, Sergey S.
name: Ingram, Adam
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Magnetized neutron stars power at least some ultra-luminous X-ray sources. The accretion flow in these cases is interrupted at the magnetospheric radius and then reaches the surface of a neutron star following magnetic field lines. Accreting matter moving along magnetic field lines forms the accretion envelope around the central object. We show that, in case of high mass accretion rates $\gtrsim 10^{19}\,{\rm g\,s^{-1}}$ the envelope becomes closed and optically thick, which influences the dynamics of the accretion flow and the observational manifestation of the neutron star hidden behind the envelope. Particularly, the optically thick accretion envelope results in a multi-color black-body spectrum originating from the magnetospheric surface. The spectrum and photon energy flux vary with the viewing angle, which gives rise to pulsations characterized by high pulsed fraction and typically smooth pulse profiles. The reprocessing of radiation due to interaction with the envelope leads to the disappearance of cyclotron scattering features from the spectrum. We speculate that the super-orbital variability of ultra-luminous X-ray sources powered by accreting neutron stars can be attributed to precession of the neutron star due to interaction of magnetic dipole with the accretion disc.
description: 8 pages, 6 figures, accepted for publication in MNRAS
Sonnenfleckenzeichnung Nr. 61.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.03.2004, 08:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Boundary element formulation of the Mild-Slope Equation for harmonic water waves propagating over unidirectional variable bathymetries
Creators: name: Cerrato, Antonio
name: González, José A.
name: Rodríguez-Temblequer, Luis
Publisher: name: arXiv
Year: 2025
Subjects: subject: Numerical Analysis (math.NA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper presents a boundary element formulation for the solution of the Mild-Slope equation in wave propagation problems with variable water depth in one direction. Based on the Green's function approximation proposed by Belibassakis \cite{Belibassakis2000}, a complete fundamental-solution kernel is developed and combined with a boundary element scheme for the solution of water wave propagation problems in closed and open domains where the bathymetry changes arbitrarily and smoothly in a preferential direction. The ability of the proposed formulation to accurately represent wave phenomena like refraction, reflection, diffraction and shoaling, is demonstrated with the solution of some example problems, in which arbitrary geometries and variable seabed profiles with slopes up to 1:3 are considered. The obtained results are also compared with theoretical solutions, showing an excellent agreement that demonstrates its potential.
Abelian-Square-Rich Words
Creators: name: Fici, Gabriele
name: Mignosi, Filippo
name: Shallit, Jeffrey
Publisher: name: arXiv
Year: 2017
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 68R15

description: An abelian square is the concatenation of two words that are anagrams of one another. A word of length $n$ can contain at most $Θ(n^2)$ distinct factors, and there exist words of length $n$ containing $Θ(n^2)$ distinct abelian-square factors, that is, distinct factors that are abelian squares. This motivates us to study infinite words such that the number of distinct abelian-square factors of length $n$ grows quadratically with $n$. More precisely, we say that an infinite word $w$ is {\it abelian-square-rich} if, for every $n$, every factor of $w$ of length $n$ contains, on average, a number of distinct abelian-square factors that is quadratic in $n$; and {\it uniformly abelian-square-rich} if every factor of $w$ contains a number of distinct abelian-square factors that is proportional to the square of its length. Of course, if a word is uniformly abelian-square-rich, then it is abelian-square-rich, but we show that the converse is not true in general. We prove that the Thue-Morse word is uniformly abelian-square-rich and that the function counting the number of distinct abelian-square factors of length $2n$ of the Thue-Morse word is $2$-regular. As for Sturmian words, we prove that a Sturmian word $s_α$ of angle $α$ is uniformly abelian-square-rich if and only if the irrational $α$ has bounded partial quotients, that is, if and only if $s_α$ has bounded exponent.
description: To appear in Theoretical Computer Science. Corrected a flaw in the proof of Proposition 7
Geschäftsbericht 2018
Creators: name: Steiner, Gesine
Publisher: name: Museum für Naturkunde Berlin (MfN) - Leibniz Institute for Research on Evolution and Biodiversity
Year: 2019
Subjects: Geschäftsbericht

description: Der Geschäftsbericht 2018 gibt einen Überblick der Fakten zum Museum für Naturkunde wie beispielweise die Anzahl der Mitarbeiterinnen und Mitarbeiter, Publikationen, Budget und Drittmittel, Museumsbesucher und Teilnehmer am Bildungsprogramm, Leihanfragen und Pressespiegel. Zusätzlich werden herausragende Themen für die Weiterentwicklung des Museums im Jahr 2018 und die Relevanz des Museums präsentiert. Diese Themen sind beispielsweise die finanzielle Unterstützung für die nächsten 10 Jahre, der Audit durch den wissenschaftlichen Beirat und die Veranstaltung "Global Summit of Research Museums".
D1.5 Data Management Plan - Year 2
Creators: name: INOVA+
Publisher: name: AfriConEU
Year: 2022
Subjects: Africa
Europe
AfriConEU
Transcontinental Partnership
DIH

description: This deliverable was developed in the context of WP1 and intends to be an updated version of D1.4 - Data Management Plan – Year 1, which was produced at the beginning of the project (M3). It integrates the contents from D1.4 and, for this reason, shall replace D1.4. It aims at supporting partners in the secure and effective use and management of the research data collected and generated within the AfriConEU project. It includes information concerning types of data generated by the project, accessibility, licensing, re-use, allocation of resources, security and ethical issues.

It will be revised by Month 30 to reflect the evolving activities and needs of the project implementation, as well as to achieve a sound data management throughout.
Simulation of Wood Polymer Composites with Finite Element Analysis
Creators: name: Nukala, Satya Guha
name: Kong, Ing
name: Kakarla, Akesh Babu
name: Patel, Vipulkumar
name: Aboel Naga, Hossam
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 4016
subject: Materials engineering
subject: FOS: Materials engineering
classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 40
subject: Engineering

description: Wood is a cellulosic material that is most abundantly available in nature. Wood has been extensively used as reinforcement in polymer composite materials. Wood polymer composite (WPC) is an environmentally friendly and sustainable material exploited in building and construction within the marine, packaging, housewares, aerospace, and automotive industries. However, the precision of testing equipment for finding the properties of WPCs becomes less feasible compared to experimental analysis due to a high degree of differences in the measurement of properties such as stress, strain and deformation. Thus, evaluating the mechanical properties of WPCs using finite element analysis (FEA) can aid in overcoming the inadequacies in measuring physical properties prior to experimental analyses. Furthermore, the prediction of mechanical properties using simulation tools has evolved to analyze novel material performance under various conditions. The current study aimed to examine the mechanical properties of saw dust-reinforced recycled polypropylene (rPP) through experimentation and FEA. A model was developed using SolidWorks, and simulation was performed in ANSYS to predict the mechanical properties of the WPCs. To validate the obtained results, the simulated static tension test results were confirmed with experimental tension tests, and both assessments were well in accordance with each other. Using FEA to predict material properties could be a cost-effective technique in studying new materials under varied load conditions.
An empirical test of the Agglutination Hypothesis
Creators: name: Haspelmath, Martin
Publisher: name: Zenodo
Year: 2009

description: In this paper, I approach the agglutination-fusion distinction from an empirical point of view. Although the well-known morphological typology of languages (isolating, agglutinating, flexive/fusional, incorporating) has often been criticized as empty, the old idea that there are (predominantly) agglutinating and (predominantly) fusional languages in fact makes two implicit predictions. First, agglutination/fusion is characteristic of whole languages rather than individual constructions; second, the various components of agglutination/fusion correlate with each other. The (unstated, but widely assumed) Agglutination Hypothesis can thus be formulated as follows: (i) First prediction: If a language is agglutinating/fusional in one area of its morphology (e.g. in nouns, or in the future tense), it shows the same type elsewhere. (ii) Second prediction: If a language is agglutinating/fusional with respect to one of the three agglutination parameters (a-c) (and perhaps others), it shows the same type with respect to the other two parameters: (a) separation/cumulation, (b) morpheme invariance/morpheme variability, (c) affix uniformity/affix suppletion. I report on a study of the nominal and verbal inflectional morphology of a reasonably balanced world-wide sample of 30 languages, applying a variety of measures for the agglutination parameters and determining whether they are cross-linguistically significant. The results do not confirm the validity of the Agglutination Hypothesis, and the current evidence suggests that “agglutination” is just one way of trying to capture the strangeness of non-Indo-European languages, which all look alike to Eurocentric eyes.
Fabrication d’une cigale chez Jean Estirach. Le nœud est fait pour passer le bâtonnet de préhension
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2022

Abstract
Critical Slowing Down of Quadrupole and Hexadecapole Orderings in Iron Pnictide Superconductor
Creators: name: Kurihara, Ryosuke
name: Mitsumoto, Keisuke
name: Akatsu, Mitsuhiro
name: Nemoto, Yuichi
name: Goto, Terutaka
name: Kobayashi, Yoshiaki
name: Sato, Masatoshi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Ultrasonic measurements have been carried out to investigate the critical dynamics of structural and superconducting transitions due to degenerate orbital bands in iron pnictide compounds with the formula Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$. The attenuation coefficient $α_{\mathrm{L}[110]}$ of the longitudinal ultrasonic wave for $(C_{11}+C_{12}+2C_{66})/2$ for $x = 0.036$ reveals the critical slowing down of the relaxation time around the structural transition at $T_\mathrm{s} = 65$ K, which is caused by ferro-type ordering of the quadrupole $O_{x'^2-y'^2}$ coupled to the strain $\varepsilon_{xy}$. The attenuation coefficient $α_{66}$ of the transverse ultrasonic wave for $C_{66}$ for $x = 0.071$ also exhibits the critical slowing down around the superconducting transition at $T_\mathrm{SC} = 23$ K, which is caused by ferro-type ordering of the hexadecapole $H_z^α\bigl( \boldsymbol{r}_i, \boldsymbol{r}_j \bigr) = O_{x'y'}\bigl( \boldsymbol{r}_i \bigr) O_{x'^2 - y'^2}\bigl( \boldsymbol{r}_j \bigr) + O_{x'^2 - y'^2}\bigl( \boldsymbol{r}_i \bigr) O_{x'y'}\bigl( \boldsymbol{r}_j \bigr)$ of the bound two-electron state coupled to the rotation $ω_{xy}$. It is proposed that the hexadecapole ordering associated with the superconductivity brings about spontaneous rotation of the macroscopic superconducting state with respect to the host tetragonal lattice.
Sonnenfleckenzeichnung Nr. 94.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.04.2004, 08:30, erstellt von Michele Bianda
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A Guide for Members of REA Cooperatives
Creators: name: Rural Electrification Administration
name: Rural Electrification Administration
Publisher: name: Unknown
Year: 1939
Subjects: Agribusiness
Agricultural and Food Policy
Community/Rural/Urban Development

description: Excerpts from the Report: This booklet will tell you how effective cooperative enterprise can be in rural electrification. In the four years since 1935, more than 600 REA-financed cooperatives have been organized. The number of farms electrified has more than doubled. Aid to cooperative rural electrification projects became a direct concern of the Department of Agriculture on July 1, 1939, when REA was made a unit of the Department. We are throwing the resources of the Department behind the REA program. Our aim is to carry electricity to as many farms as is possible on a sound, self-liquidating basis. Already cooperative electricity has contributed significantly toward making farm life worthy of the people who live on the farm. Along with our other activities, rural electrification, cooperatively accomplished, will continue to move forward.
Sonnenfleckenzeichnung Nr. 166.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.07.2004, 07:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Diseño y validación de un instrumento para evaluar investigaciones observacionales estudiantiles cubanas de ciencias médicas
Creators: name: Piñera-Castro, Hector Julio
name: Saborit-Rodríguez, Adrian
name: Ruíz-González, Lisandra Aimé
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 429999
subject: Other health sciences not elsewhere classified

description: RESUMENIntroducción: pese a la intensa actividad que existe en los eventos científicos estudiantiles cubanos de ciencias médicas, actualmente no se dispone de ningún instrumento validado para la evaluación de los informes escritos que en estos espacios se presentan. Objetivo: diseñar y validar un instrumento para evaluar los informes escritos de investigaciones observacionales presentados en los eventos científicos estudiantiles cubanos de ciencias médicas. Métodos: estudio de diseño y validación de un instrumento realizado entre septiembre de 2021 y septiembre de 2023. En la fase de diseño, se creó un producto en Microsoft Excel 2016 para hacer más expedita la aplicación del instrumento (90 ítems y 10 dimensiones). En la fase de validación, se aplicó una metodología de cinco etapas: 1) validez de contenido, 2) confiabilidad basada en la consistencia interna, 3) validez de constructo, 4) relación test-criterio externo y acuerdo entre evaluadores y 5) confiabilidad basada en la estabilidad. Resultados: la validez de contenido y de constructo se evidenció con coeficientes V de Aiken mayores que 0,8. El coeficiente de Kuder-Richardson fue de 0,865 (consistencia interna aceptable). Se constató la validez de los criterios del instrumento con respecto a un criterio externo y se comprobó que el acuerdo entre evaluadores que su aplicación propicia es casi perfecto (coeficiente kappa de Fleiss mayor que 0,81 en todos los casos). El instrumento es estable, pues las calificaciones del test y el retest se correlacionaron perfectamente (coeficiente de correlación de Pearson igual a 1). Conclusiones: el instrumento diseñado ofrece resultados válidos y confiables.
The Role of Microfinance in Empowering Women Entrepreneurs in Rural India
Creators: name: Dr Sushama Sharma
Publisher: name: Zenodo
Year: 2018

description: This research paper explores the role of microfinance in empowering women entrepreneurs in rural India,highlighting its impact, challenges, and potential for enhancing economic opportunities. Microfinance hassignificantly contributed to women's financial inclusion by providing access to credit and financial services,which has enabled many rural women to start and expand businesses, improve household incomes, and fostercommunity development. Through a review of various case studies, the paper demonstrates how microfinancehas transformed the lives of women like Laxmi Devi and Sunita Sharma, showcasing both successes andlimitations. However, the study also identifies key challenges, including over-indebtedness, high interest rates,social and cultural barriers, and inadequate non-financial support services. The paper concludes with policyrecommendations aimed at addressing these issues, such as enhancing financial literacy, expanding loan sizes,integrating non-financial support, and promoting gender-sensitive policies. By providing a comprehensiveanalysis of microfinance's effectiveness and limitations, this research offers valuable insights for stakeholdersseeking to improve the impact of microfinance on women's empowerment and support sustainable economicdevelopment in rural India.
Business Validation in 5G PPP vertical use cases
Creators: name: Gavras, Anastasius
name: Durkin, Patrick
name: Fletcher, Simon
name: Hallingby, Hanne Kristine
name: Mesogiti, Ioanna
Publisher: name: Zenodo
Year: 2020

description: Expectations are high for 5G, as it promises many benefits and new business opportunities for all stakeholders engaged in the creation and use of future networks and services. The 5G PPP continues to invest considerable resources into researching and developing the technological side of 5G systems. A relatively recent development is the additional challenge to EU research projects to validate claims about business opportunities through business validation analysis. The challenges for business validation involve using an appropriate analytic approach, as well as the identification of the critical ingredients used for the analysis. Business validation must encompass value propositions for vertical industries, the identification of stakeholders, the emergent roles in the value system, as well as the identification and visualisation of the complex ecosystems that are expected to emerge. In the late fall of 2019, the Working Group “Visions and Societal Challenges” of 5G Infrastructure Association (5G IA) took the initiative to establish the “Business Validation, Models, and Ecosystems” Sub-Group (BVME-SG). On the 25th February 2020 BVME-SG was formally constituted and started a series of meetings to refine the scope and processes of the group. This positioning paper has been collaboratively developed by BVME-SG participants to summarise the findings of those initial meetings. It formally establishes the scope of the group, and key working processes. We draw on some example projects in the 5G PPP portfolio of projects; however, the BVME-SG welcomes new participants from any of the 5G-PPP projects to share knowledge on their project approaches, the challenges, insights and findings so a view on the diversity of approaches can be formed. Future work of the BVME-WG will systematically capture and characterize the methods used for business related considerations of the 5G PPP projects and eventually also capture market estimates, business models and business cases.
Associative pattern recognition through macro-molecular self-assembly
Creators: name: Zhong, Weishun
name: Schwab, David J.
name: Murugan, Arvind
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We show that macro-molecular self-assembly can recognize and classify high-dimensional patterns in the concentrations of $N$ distinct molecular species. Similar to associative neural networks, the recognition here leverages dynamical attractors to recognize and reconstruct partially corrupted patterns. Traditional parameters of pattern recognition theory, such as sparsity, fidelity, and capacity are related to physical parameters, such as nucleation barriers, interaction range, and non-equilibrium assembly forces. Notably, we find that self-assembly bears greater similarity to continuous attractor neural networks, such as place cell networks that store spatial memories, rather than discrete memory networks. This relationship suggests that features and trade-offs seen here are not tied to details of self-assembly or neural network models but are instead intrinsic to associative pattern recognition carried out through short-ranged interactions.
description: 13 pages, 7 figures; reference added
Sonnenfleckenzeichnung Nr. 174.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.07.2004, 07:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
D1.4 Data Management Plan - Year 1
Creators: name: INOVA+
Publisher: name: AfriConEU
Year: 2021
Subjects: Africa
Europe
DIH
AfriConEU
Transcontinentalpartnership

description: The Data Management Plan (DMP) is intended to support partners in the secure and effective use and management of the research data collected and generated within the AfriConEU project. It presents the types of research data that will be generated or collected during the project, the standards that will be used, how the research data will be preserved and what parts of the datasets will be shared for verification or reuse. Importantly, AfriconEU empirical research will generate data from the quantitative surveys, interviews to relevant stakeholders, focus groups, roundtables and workshops. The qualitative research data will not be made openly accessible as primary data but in a processed form as reports.

This DMP will be revised and updated by Month 18 and by Month 30 to reflect the evolving activities and needs of the project implementation, as well as to achieve a sound data management throughout. In particular, the updated versions of the DMP will provide details on particular issues such as data interoperability and improved data management procedures.
Model-based prognostic algorithm for PEM fuel cells system
Creators: name: Petrone, Raffaele
Publisher: name: Zenodo
Year: 2017
Subjects: PEMFC system
Model-based
prognostic
RUL

description: This deliverable gives an overview of the model-based prognostic approach developed by UFC for the PEM fuel cells system (stack and BoP). The system model is developed under the Energetic Macroscopic Representation, EMR formalism, integrating the ageing behavior of the BoP key elements, such as the stack and the air supply unit. The different algorithms are presented and the remaining useful life (RUL) is defined for each key element. The strategies and hypothesis adopted for the RUL evaluation are discussed. The developed algorithms will be tuned with the experimental data provided by BEG and EK and software implementation will be presented in the next deliverable (D2.2).
Sonnenfleckenzeichnung Nr. 197.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.08.2004, 10:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2004

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)