cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Fine-Structure Constant as a Dimensional  Harmonic Ratio: A Geometric Origin for α from  Recursive Phase Structure
Creators: name: Sixta, David
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Quantum physics
subject: Physics
subject: Mathematical physics
subject: Laser physics
subject: Physics/instrumentation
subject: Physics/methods
subject: Physics/standards
subject: Nuclear physics
subject: Particle physics
subject: Atomic physics
subject: Nuclear physics
subject: Plasma physics
subject: Physics/education
subject: Heat (physics)
subject: Solar physics
subject: Theoretical physics

description:  The fine-structure constant α ≈ 1/137.036 governs the strength of electromagnetic interactions yet has no derivation from first principles in conventional physics. In this paper, we propose that α arises naturally as a harmonic ratio in the recursive phase-space topology of Sixta Theory. By treating α as a ratio of phase-locked electromagnetic twist energy to total dimensional harmonic amplitude, we offer a new origin for this constant rooted in chirality and recursive resonance. This model opens paths for explaining potential α-variation and observer-relative coupling strengths.
Atomic structure of Mn wires on Si(001) resolved by scanning tunneling microscopy
Creators: name: Fuhrer, A.
name: Rueß, F. J.
name: Moll, N.
name: Curioni, A.
name: Widmer, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: At submonolayer coverage, Mn forms atomic wires on the Si(001) surface oriented perpendicular to the underlying Si dimer rows. While many other elements form symmetric dimer wires at room temperature, we show that Mn wires have an asymmetric appearance and pin the Si dimers nearby. We find that an atomic configuration with a Mn trimer unit cell can explain these observations due to the interplay between the Si dimer buckling phase near the wire and the orientation of the Mn trimer. We study the resulting four wire configurations in detail using high-resolution scanning tunneling microscopy (STM) imaging and compare our findings with STM images simulated by density functional theory.
description: 4 pages, 4 figures
Modeling Multi-Wavelength Stellar Astrometry. III. Determination of the Absolute Masses of Exoplanets and Their Host Stars
Creators: name: Coughlin, Jeffrey L.
name: Lopez-Morales, Mercedes
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Astrometric measurements of stellar systems are becoming significantly more precise and common, with many ground and space-based instruments and missions approaching 1 microarcsecond precision. We examine the multi-wavelength astrometric orbits of exoplanetary systems via both analytical formulae and numerical modeling. Exoplanets have a combination of reflected and thermally emitted light that cause the photocenter of the system to shift increasingly farther away from the host star with increasing wavelength. We find that, if observed at long enough wavelengths, the planet can dominate the astrometric motion of the system, and thus it is possible to directly measure the orbits of both the planet and star, and thus directly determine the physical masses of the star and planet, using multi-wavelength astrometry. In general, this technique works best for, though is certainly not limited to, systems that have large, high-mass stars and large, low-mass planets, which is a unique parameter space not covered by other exoplanet characterization techniques. Exoplanets that happen to transit their host star present unique cases where the physical radii of the planet and star can be directly determined via astrometry alone. Planetary albedos and day-night contrast ratios may also be probed via this technique due to the unique signature they impart on the observed astrometric orbits. We develop a tool to examine the prospects for near-term detection of this effect, and give examples of some exoplanets that appear to be good targets for detection in the K to N infrared observing bands, if the required precision can be achieved.
description: Accepted to the Astrophysical Journal. 9 pages, 6 figures, 1 table in emulateapj format
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 12 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 21 Nr. 5 (1968): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
title: "Busto di figura maschile", arte romana, inv. CCXCIII (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Ciccarello, Giulia
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
Search for radio pulsations in LS I +61 303
Creators: name: Cañellas, A.
name: Joshi, B. C.
name: Paredes, J. M.
name: Ishwara-Chandra, C. H.
name: Moldón, J.
name: Zabalza, V.
name: Martí, J.
name: Ribó, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Context. LS I +61 303 is a member of the select group of gamma-ray binaries: galactic binary systems that contain a massive star and a compact object, show a changing milliarcsecond morphology and a similar broad spectral energy distribution (SED) that peaks at MeV-TeV energies and is modulated by the orbital motion. The nature of the compact object is unclear in LS I +61 303, LS 5039 and HESS J0632+057, whereas PSR B1259-63 harbours a 47.74 ms radio pulsar. Aims. A scenario in which a young pulsar wind interacts with the stellar wind has been proposed to explain the very high energy (VHE, E > 100 GeV) gamma-ray emission detected from LS I +61 303, although no pulses have been reported from this system at any wavelength. We aim to find evidence of the pulsar nature of the compact object. Methods. We performed phased array observations with the Giant Metrewave Radio Telescope (GMRT) at 1280 MHz centred at phase 0.54. Simultaneous data from the multi-bit phased array (PA) back-end with a sampling time of tsamp = 128 microsec and from the polarimeter (PMT) back-end with tsamp = 256 microsec where taken. Results. No pulses have been found in the data set, with a minimum detectable mean flux density of \sim 0.38 mJy at 8-sigma level for the pulsed emission from a putative pulsar with period P >2 ms and duty cycle D = 10% in the direction of LS I +61 303. Conclusions. The detection of posible radio pulsations will require deep and sensitive observations at frequencies \sim0.5-5 GHz and orbital phases 0.6-0.7. However, it may be unfeasible to detect pulses if the putative pulsar is not beamed at the Earth or if there is a strong absorption within the binary system.
description: 8 pages. 5 figures. Accepted for publication in Astronomy and Astrophysics
IPBES Invasive alien species assessment, data management report for Chapter 3. Section: Fire
Creators: name: IPBES Technical Support Unit For The Assessment Of Invasive Alien Species
Publisher: name: Zenodo
Year: 2021
Subjects: Data management report

description: Section 3.3.4.5 assesses the role of fire as a driver of biological invasions in Chapter 3 of IPBES assessment of invasive alien species and their control. The experts conducted a systematic review to report on the existing knowledge on this driver. This systematic review consists in the main source of evidence for the section.
Internationales Kunsthistorisches Referateorgan
Creators: name: Haas, Verena
name: Waetzoldt, Stephan
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 2 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Forward Energy Flow, Central Charged-Particle Multiplicities, and Pseudorapidity Gaps in W and Z Boson Events from pp Collisions at 7 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A study of forward energy flow and central charged-particle multiplicity in events with W and Z bosons decaying into leptons is presented. The analysis uses a sample of 7 TeV pp collisions, corresponding to an integrated luminosity of 36 inverse picobarns, recorded by the CMS experiment at the LHC. The observed forward energy depositions, their correlations, and the central charged-particle multiplicities are not well described by the available non-diffractive soft-hadron production models. A study of about 300 events with no significant energy deposited in one of the forward calorimeters, corresponding to a pseudorapidity gap of at least 1.9 units, is also presented. An indication for a diffractive component in these events comes from the observation that the majority of the charged leptons from the (W/Z) decays are found in the hemisphere opposite to the gap. When fitting the signed lepton pseudorapidity distribution of these events with predicted distributions from an admixture of diffractive (POMPYT) and non-diffractive (PYTHIA) Monte Carlo simulations, the diffractive component is determined to be (50.0 +/- 9.3 (stat.) +/- 5.2 (syst.))%.
A short history and update of sponge movement naming conventions
Creators: name: Ruperti, Fabian
Publisher: name: Zenodo
Year: 2023

description: This document is supplemental to Ruperti, et al. (2023) Molecular profiling of sponge deflation reveals an ancient relaxant-inflammatory response.
It gives a brief overview of the history of the naming convention of sponge movement and concludes with updated naming conventions based on the results of the publication.
Planetella westermanni
Creators: name: Ševčík, Jan
name: Hippa, Heikki
name: Burdíková, Nikola
name: Sopuch, Kryštof
name: Skuhravá, Marcela
name: Bruun, Hans Henrik
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Planetella
Planetella westermanni

description: Planetella westermanni (Meigen, 1830)
 Cecidomyia westermanni Meigen, 1830: 269. Type locality: Germany: near Kiel.
 Type material. HOLOTYPE: J (lost).
 Comments. The original description is very short, without figures, and this species is not figured in MORGE (1975). It is stated that it was collected near Kiel, into the collection of Mr. Westermann. Unrecognized species.
description: Published as part of Ševčík, Jan, Hippa, Heikki, Burdíková, Nikola, Sopuch, Kryštof, Skuhravá, Marcela & Bruun, Hans Henrik, 2023, Integrative taxonomy of Central European Planetella (Diptera: Cecidomyiidae) indicates high species diversity, intraspecific variation and low host specificity, pp. 413-450 in Acta Entomologica Musei Nationalis Pragae 63 (2) on page 445, DOI: 10.37520/aemnp.2023.026, http://zenodo.org/record/10621390
Cooling, conductance and thermometric performance of non-ideal normal metal-superconductor tunnel junction pairs
Creators: name: Chaudhuri, S.
name: Maasilta, I. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have investigated the effect of a difference in the tunnelling resistances of the individual normal metal-insulator-superconductor (NIS) tunnel junctions in a double junction SINIS device, with particular emphasis on the impact on the conductance, cooling and thermometric performance. By solving the electrical and thermal equations of the junctions in a self-consistent way, we find that asymmetry gives rise to many new features, such as appearance of an excess sub-gap current, improved cooling performance, exhibition of negative differential resistance, and improved temperature range of thermometric sensitivity. Experiments were also carried out to complement some of the numerical results. In addition, we studied theoretically and experimentally the effect of a finite series resistance, which also causes an excess current in the subgap region, and a suppression of the conductance maxima at the gap edge. Experimental results agree well with the theoretical predictions.
description: 14 pages
“Snatched from Time’s effacement”: Sargent’s portrait of the Sitwells and the embers of aristocratic life
Creators: name: Musson, Jeremy
Publisher: name: Pamiętnik Sztuk Pięknych / Fine Arts Diary
Year: 2019

description: Pamiętnik Sztuk Pięknych / Fine Arts Diary, Bd. 10 (2015): Pamiętnik Sztuk Pięknych / Fine Arts Diary
Strong outburst activity of the X-ray pulsar X Persei during 2001-2011
Creators: name: Lutovinov, A.
name: Tsygankov, S.
name: Chernyakova, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results of a comprehensive analysis of the X-ray pulsar X Persei over the period 1996 to 2011, encompassing the quite low state and subsequent strong outburst activity. Using data from the RXTE and Swift observatories we detected several consecutive outbursts, during which the source luminosity increased by a factor of ~5 up to L_x~1.2x10^{35} erg/s. Previously the source was observed in a high state only once. The source spectrum in a standard energy band (4-25 keV) is independent of the flux change and can be described by a model that includes both thermal and non-thermal components. With the help of the INTEGRAL observatory data we registered the highly significant cyclotron absorption line in the source spectrum and, for the first time, significantly detected a hard X-ray emission from the pulsar up to ~160 keV. We also report drastic changes of the pulse period during the outburst activity: a long episode of spin-down was changed to spin-up with a rate of Pdot/P = -(3-5)x10^{-4} yr^{-1}, that is several times higher than previous rates of spin-up and spin-down. To search for a correlation between the X-ray and optical lightcurves we took data from the AAVSO International Database. No significant correlation between optical and X-ray fluxes at any time lag from dozens of days to years was found.
description: 8 pages, 6 figures, accepted for publication in MNRAS
Samowywyższenie i strącenie w śmiech. Wędrówka ducha myśli Bolesława Biegasa i Mistrz Kłębek Henryka Piątkowskiego
Creators: name: Okulicz-Kozaryn, Radosław
Publisher: name: Pamiętnik Sztuk Pięknych / Fine Arts Diary
Year: 2019

description: Pamiętnik Sztuk Pięknych / Fine Arts Diary, Bd. 10 (2015): Pamiętnik Sztuk Pięknych / Fine Arts Diary
Law of Connectivity in Machine Learning
Creators: name: Dundas, Jitesh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We present in this paper our law that there is always a connection present between two entities, with a selfconnection being present at least in each node. An entity is an object, physical or imaginary, that is connected by a path (or connection) and which is important for achieving the desired result of the scenario. In machine learning, we state that for any scenario, a subject entity is always, directly or indirectly, connected and affected by single or multiple independent / dependent entities, and their impact on the subject entity is dependent on various factors falling into the categories such as the existenc
description: Keywords- Machine Learning; unknown entities; independence; interaction; coverage, silent connections; ISSN 1473-804x online, 1473-8031 print
Witraż świecki we Lwowie na początku XX wieku Przeoczona perła
Creators: name: Overchuk, Oleksandr
Publisher: name: Pamiętnik Sztuk Pięknych / Fine Arts Diary
Year: 2019

description: Pamiętnik Sztuk Pięknych / Fine Arts Diary, Bd. 10 (2015): Pamiętnik Sztuk Pięknych / Fine Arts Diary
Wavelet based lossless High Speed Compression of Compound Image
Creators: name: Kumar, Dr.P.S.Jagadeesh
Publisher: name: figshare
Year: 2019
Subjects: Computer Engineering

description: Compression of compound image is essential for remote control software, such as real virtual network computing (VNC), which allows a person at a remote computer to view and interact with another computer across the network, as if sitting in front of the computer. A smart display device acts as a portable screen with 802.11b wireless connection to a nearby desktop PC, enabling people to surf the web or browse pictures that are stored on the desktop PC. The challenge is that the huge amount of real-time computer screen video data should be transmitted over the cable or wireless networks. One 800×600 frame of true colour screen image has a size of 1.44 MB and 85 frames/sec produces more than 100 MB data. In this paper, wavelet sub-band coding based lossless compression of compound image is discussed and the implementation shows excellent visual quality of text in compressed computer screen images.
Kunst und Gegenwart
Creators: name: Keller Dubach, Anne
Publisher: name: Jahresbericht SIK-ISEA / Schweizerisches Institut für Kunstwissenschaft
Year: 2019

description: Die Kunst der Gegenwart stellt oft hohe Ansprüche. Wenn wir sie ernst nehmen, zwingt sie uns dazu, unsere Werte und Haltungen zu hinterfragen. Das Forschungsinstitut SIK-ISEA versteht sich als lebendiger Teil der gegenwärtigen Kultur und befasst sich im Besonderen mit der Kunst von heute – um sich von ihr herausfordern zu lassen und zugleich von ihr zu lernen.
description: Jahresbericht SIK-ISEA / Schweizerisches Institut für Kunstwissenschaft, 2016: Jahresbericht 2015 SIK-ISEA
Repulsive Casimir-Polder forces from cosmic strings
Creators: name: Saharian, A. A.
name: Kotanjyan, A. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the Casimir-Polder force acting on a polarizable microparticle in the geometry of a straight cosmic string. In order to develop this analysis we evaluate the electromagnetic field Green tensor on the imaginary frequency axis. The expression for the Casimir-Polder force is derived in the general case of anisotropic polarizability. In dependence of the eigenvalues for the polarizability tensor and of the orientation of its principal axes, the Casimir-Polder force can be either repulsive or attractive. Moreover, there are situations where the force changes the sign with separation. We show that for an isotropic polarizability tensor the force is always repulsive. At large separations between the microparticle and the string, the force varies inversely as the fifth power of the distance. In the non-retarded regime, corresponding to separations smaller than the relevant transition wavelengths, the force decays as the inverse fourth power of the distance. In the case of anisotropic polarizability, the dependence of the Casimir-Polder potential on the orientation of the polarizability tensor principal axes also leads to the moment of force acting on the particle.
description: 16 pages, 2 figures
Beweisrecht und ordre public
Creators: name: Roer, Louis M.
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2019

description: Trotz weitreichender Rechtsharmonisierung unterscheidet sich das Zivilverfahrensrecht von Staat zu Staat. Selbst innerhalb des kontinentalen Rechtskreises zeigen sich Unterschiede innerhalb des Verfahrens-, insbesondere innerhalb des Beweisrechts. Dies wurde in einer Entscheidung des BGH vom 4.6.2017 über die Anerkennung und Vollstreckung einer Schweizer Entscheidung deutlich. Der BGH befasste sich mit der Frage, wann die Andersartigkeit des Beweisrechts mit dem ordre public kollidiert. Gegenstand dieses Beitrags ist es, den Inhalt des verfahrensrechtlichen ordre public darzustellen, um anschließend an diesem Maßstab die Entscheidung des BGH kritisch zu würdigen. Dabei wird auf den Grundsatz der prozessualen Waffengleichheit, das Recht auf Beweis und das Recht auf rechtliches Gehör eingegangen. Despite far-reaching legal harmonization, civil proceedings differ from state to state. Even within the continental legal system, there are differences within the procedural law, in particular within the law of evidence. This became particularly clear in a decision of the German Federal Court of Justice (BGH) of 4.6.2017 on the recognition and enforcement of a Swiss decision. The BGH dealt with the question, when the difference between the law of evidence and the public policy doctrine collide. The object of this paper is to present the content of the procedural public policy doctrine to critically assess the BGH’s decision against this standard. In this context, this paper especially deals with the principle of procedural equality of arms, the right to evidence and the right to a fair hearing.
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 2 (2019): StudZR-WissOn
Efficient Block Classification of Computer Screen Images for Desktop Sharing using Neural Network
Creators: name: Kumar, Dr.P.S.Jagadeesh
Publisher: name: figshare
Year: 2019
Subjects: Computer Engineering

description: This paper presents a neural network based efficient block classification of compound images for desktop sharing. The objective is to maximize the precision and recall rate of the classification algorithm, while at the same time minimizing the execution and training time of the neural network. It segments computer screen images into text/ graphics, picture/background blocks by using as input, the statistical features based on DWT coefficients in the sub-bands of each 8×8 block. The proposed algorithm can perform accurate block classification of text information with different fonts, sizes and ways of arrangement from the background image, so that text/graphics blocks can be compressed at higher quality than background image blocks. The proposed work is expected to minimize block classification error due to the adaptive nature of neural network.
Probing the CR positron/electron ratio at few hundreds GeV through Moon shadow observation with the MAGIC telescopes
Creators: name: Colin, Pierre
name: Tridon, Daniela Borla
name: Ortega, Alicia Diago
name: Doert, Marlene
name: Doro, Michele
name: Pochon, Jonathan
name: Strah, Nikola
name: Suric, Tihomir
name: Teshima, Masahiro
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The antimatter components measured in the Cosmic Ray (CR) flux are thought as secondary particles induced by the propagation of galactic CRs within the galaxy. Recent results from the PAMELA experiment show an unexpected increase of the positron electron ratio above 10 GeV. There could be different interpretations to explain that result, the most discussed ones being the signature of nearby compact astrophysical source(s) or of dark matter annihilation/decay. Probing the positron-fraction rise above 100 GeV would help to disentangle among different scenarios. Imaging Atmospheric Cherenkov Telescopes (IACT) can extract the cosmic lepton signal from the hadronic CR background between a few hundred GeV and a few TeV and reconstruct energy and incident direction with a very good resolution. In addition, by using the natural spectrometer formed by the Moon and the geomagnetic field, it is possible to measure the positron/electron ratio at the TeV regime through the observation of the CR Moon shadow. Despite the technique is particularly challenging because of the high background light induced by the Moon and the treatment of data, the MAGIC collaboration has performed for the first time such observations in 2010 and 2011. Here we present the observation strategy and the performance achieved during this campaign.
description: 4 pages, 4 figures, proceedings of the 32nd ICRC (2011) Beijing
Extended Lagrangian free energy molecular dynamics
Creators: name: Niklasson, Anders M. N.
name: Steneteg, Peter
name: Bock, Nicolas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Extended free energy Lagrangians are proposed for first principles molecular dynamics simulations at finite electronic temperatures for plane-wave pseudopotential and local orbital density matrix based calculations. Thanks to the extended Lagrangian description the electronic degrees of freedom can be integrated by stable geometric schemes that conserve the free energy. For the local orbital representations both the nuclear and electronic forces have simple and numerically efficient expressions that are well suited for reduced complexity calculations. A rapidly converging recursive Fermi operator expansion method that does not require the calculation of eigenvalues and eigenfunctions for the construction of the fractionally occupied density matrix is discussed. An efficient expression for the Pulay force that is valid also for density matrices with fractional occupation occurring at finite electronic temperatures is also demonstrated.
Busby, D. & Rutland, C. (2019). The Horse. A Natural History
Creators: name: Benkert, Helene
Publisher: name: Archäologische Informationen
Year: 2020

description: Rezension zu: Busby, D. & Rutland, C. (2019). The Horse. A Natural History. Brighton: Ivy Press. 224 pages, 225 figures (partly colour), hard cover. ISBN 978-1-78240-565-8
description: Archäologische Informationen, Bd. 42 (2019): Archäologische Informationen
Hyperellipticity and Systoles of Klein Surfaces
Creators: name: Katz, Mikhail G.
name: Sabourau, Stephane
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: Geometric Topology (math.GT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Given a hyperelliptic Klein surface, we construct companion Klein bottles, extending our technique of companion tori already exploited by the authors in the genus 2 case. Bavard's short loops on such companion surfaces are studied in relation to the original surface so to improve a systolic inequality of Gromov's. A basic idea is to use length bounds for loops on a companion Klein bottle, and then analyze how curves transplant to the original nonorientable surface. We exploit the real structure on the orientable double cover by applying the coarea inequality to the distance function from the real locus. Of particular interest is the case of Dyck's surface. We also exploit an optimal systolic bound for the Möbius band, due to Blatter.
description: 22 pages, 2 figures; Geometriae Dedicata, 2011
Petite et moyenne entreprise de production animale et échange intra régionale : cas du Mali dans l'espace CEDEAO
Creators: name: Ibrahim BASSOLE
name: Abdramane TAMBOURA
Publisher: name: Zenodo
Year: 2025

description: Notre article, vise à favoriser le lien entre participation des petites et moyennes entreprises de productions animales et échanges intra régionales du Mali à l’intérieur de l’espace CEDEAO. En effet, il examine d’abord qu’environ 11,4% du total des producteurs agricoles, pratique uniquement une spécialisation en fonction de la taille principalement à Gao et à Mopti (IMPD, 2007). L’article a également identifié le profil des acteurs opérant dans les échanges intra régionale CEDEAO de production animale. Par contre, la littérature économique reste peu documentée en la matière, surtout très précisément pour notre région. Parmi les études qui sont intéressés par notre sujet, on peut citer : celle de (Bassolé, 2022 ; Ba A., Lesnoff M., Poccard-Chapuis R., Corniaux C., Moulin C.H., 2009 ; Blein, et al., 2008). En ce qui concerne la méthodologique utilisé, elle repose principalement sur des données d’enquête issu de l’étude (Bassolé, 2022), réalisée en deux étapes sur le profil des acteurs opérant dans le commerce intra régional CEDEAO.
Barth, A. (2018). Dippoldiswalder Steinzeug. Ein Töpferhandwerk und seine kulturhistorische Bedeutung. Mit einem Beitrag von Detlef Wilke
Creators: name: Keller, Christoph
Publisher: name: Archäologische Informationen
Year: 2020

description: Rezension zu: Barth, A. (2018). Dippoldiswalder Steinzeug. Ein Töpferhandwerk und seine kulturhistorische Bedeutung. Mit einem Beitrag von Detlef Wilke. (Veröffentlichungen des Landesamtes für Archäologie Sachsen 65 = Archaeo-Montan 2). Dresden: Landesamt für Archäologie in Sachsen. 320 S. ISBN 978-3-943770-34-6
description: Archäologische Informationen, Bd. 42 (2019): Archäologische Informationen
Kopp, P. (2018). Funde und Befunde aus der Umgebung des Satettempels: Grabungen von 2006–2009
Creators: name: Wilde, Heike
Publisher: name: Archäologische Informationen
Year: 2020

description: Rezension zu: Kopp, P. (2018). Funde und Befunde aus der Umgebung des Satettempels: Grabungen von 2006–2009. (Elephantine, 24; Archäologische Veröffentlichungen des Deutschen Archäologischen Instituts, 104). Wiesbaden: Harrassowitz. Hardcover, 268 Seiten, 20 Tafeln: Illustrationen, Karten. ISBN 978-3-447-10903-1
description: Archäologische Informationen, Bd. 42 (2019): Archäologische Informationen
Jitter Self-Compton Process: GeV Emission of GRB 100728A
Creators: name: Mao, J.
name: Wang, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Jitter radiation, the emission of relativistic electrons in a random and small-scale magnetic field, has been applied to explain the gamma-ray burst (GRB) prompt emission. The seed photons produced from jitter radiation can be scattered by thermal/nonthermal electrons to the high-energy bands. This mechanism is called jitter self-Compton (JSC) radiation. GRB 100728A, which was simultaneously observed by the Swift and Fermi, is a great example to constrain the physical processes of jitter and JSC. In our work, we utilize jitter/JSC radiation to reproduce the multiwavelength spectrum of GRB 100728A. In particular, due to JSC radiation, the powerful emission above the GeV band is the result of those jitter photons in X-ray band scattered by the relativistic electrons with a mixed thermal-nonthermal energy distribution. We also combine the geometric effect of microemitters to the radiation mechanism, such that the "jet-in-jet" scenario is considered. The observed GRB duration is the result of summing up all of the contributions from those microemitters in the bulk jet.
description: ApJ accepted, comments are welcome
Archäologie und die Pflicht zum Politischen: Die Berner Erklärung der 'European Association of Archaeologists'
Creators: name: Meier, Thomas
Publisher: name: Archäologische Informationen
Year: 2020

description: Dass Archäologie sich explizit politisch positioniert, ist in der deutschsprachigen Wissenschaft noch lange nicht widerspruchslos akzeptiert – nicht einmal die politische Wirkung archäologischer Narrative und denkmalpflegerischer Praktiken ist allgemein anerkannt. Auf europäischer Ebene ist die European Association of Archaeologists (EAA) nun einen entscheidenden Schritt weiter gegangen, indem sie in einer Erklärung herausstellt, dass Archäologinnen und Archäologen eine politische Verantwortung für die Zukunft friedlicher und stabiler Gesellschaften, die auf der Achtung der Menschenrechte, Demokratie, kultureller Vielfalt und Rechtsstaatlichkeit beruhen, zukommt. Durch ihre Praktiken im Umgang mit dem kulturellen Erbe kann Archäologie dazu beitragen, allen sozialen Gruppen und insbesondere auch Minderheiten die menschenrechtlich verbriefte kulturelle Teilhabe an der Gesellschaft zu ermöglichen – oder sie zu verweigern. Durch ihre Narrative naturalisiert oder dekonstruiert die Archäologie gesellschaftliche Annahmen über soziale, ethnische, kulturelle und andere (Un-)Gleichheiten und schafft heutiges und zukünftiges Handlungswissen gegenüber den Großen gesellschaftlichen Herausforderungen. Moderne Demokratie und Wissenschaft sind über das Prinzip der akademischen Freiheit direkt aneinander gekoppelt. Sie ist nicht nur Voraussetzung aller kritischen Reflektion als Inbegriff der aufgeklärten Vernunft und damit eines fundamentalen europäischen Werts, sondern sie ist zugleich Verpflichtung der Wissenschaft auf das Engagement für eine offene Zivilgesellschaft.
description: Archäologische Informationen, Bd. 42 (2019): Archäologische Informationen
Block Classification Scheme of Compound Images: A Hybrid Extension
Creators: name: Kumar, Dr.P.S.Jagadeesh
Publisher: name: figshare
Year: 2019
Subjects: Computer Engineering

description: The proposed paper aims in developing an efficient block classification using histogram for compressing compound images that contain graphics, text and picture images. In this paper, the given compound image is segmented into 8x8 blocks and these blocks are used for the image classification. The segmented blocks are classified into blocks of four different types: background blocks, text blocks, mixed blocks and picture blocks. The efficiency of block classification is observed to be of 97% for compound and computer generated images. The proposed block classification method is very simple and effective in compressing compound images. This paper discuss about the block classification of compound images using MATLAB.
Audit and Survey of Open Science and Data Sharing Practices of Radiology Journals
Creators: name: Lam, Eric
name: Al-Ghita, Mohammed Kashif
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medical Specialties
subject: Medicine and Health Sciences
subject: Radiology
subject: Nuclear Medicine
subject: Radiology
subject: Open Science
subject: Imaging

description: The purpose of this audit study is to reveal whether imaging and nuclear medicine journals are implementing open science practices to instruct their authors. In addition, we will discuss whether researchers are adhering to those policies or possibly incorporating them on their own. We will also discuss whether journal characteristics are correlated with the proportion of open science practices required by the journal.
Planetella winnertzi
Creators: name: Ševčík, Jan
name: Hippa, Heikki
name: Burdíková, Nikola
name: Sopuch, Kryštof
name: Skuhravá, Marcela
name: Bruun, Hans Henrik
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Planetella
Planetella winnertzi

description: Planetella winnertzi (Kieffer, 1898)
 Hormomyia winnertzi Kieffer, 1898: 26. Type locality: Germany.
 Type material. Lost (see GAGN Ḗ & JAsCHHOF 2021).
 Comments. In the original publication, only short remarks are included, without proper description. For example, ‘ H. ampla and H. funesta remain dubious like almost all the species described by Walker and it is not possible to recognize them’. In the same paper, also Planetella granifex (as Pseudhormomyia granifex) and P. cornifex (as Hormomyia cornifex) were described. This species was included in the key by RȖBsAAMEN (1917) among the species with uninodal flagellomeres. Apparently, he referred to females only, as in the case of P. rosenhaueri (see above), because no species of Planetella currently known has uninodal flagellomeres in the males. Unrecognized species.
description: Published as part of Ševčík, Jan, Hippa, Heikki, Burdíková, Nikola, Sopuch, Kryštof, Skuhravá, Marcela & Bruun, Hans Henrik, 2023, Integrative taxonomy of Central European Planetella (Diptera: Cecidomyiidae) indicates high species diversity, intraspecific variation and low host specificity, pp. 413-450 in Acta Entomologica Musei Nationalis Pragae 63 (2) on page 445, DOI: 10.37520/aemnp.2023.026, http://zenodo.org/record/10621390
Activities of the HZB Research Data Management Team
Creators: name: Rial, Katherine
name: Görzig, Heike
name: Krahl, Rolf
name: Perez Ponce, Hector
name: Lewerenz, Marcus
Publisher: name: Zenodo
Year: 2025

description: Overview of the services offered and work being undertaken by the FDM team at HZB
description: The Research Data Management (Forschungsdatenmanagement, FDM) team at HZB is currently involved in a wide variety of projects to benefit both our own institute and the wider PaN community. We are active within both the DAPHNE4NFDI consortium and the ICAT Project, and are a cornerstone of the Helmholtz ROCK-IT project. We are developing our own software solutions – such as the NeXusCreator file convertor and the SEPIA sample database – as well as contributing to the community development of catalysis ontologies and NeXus definitions. We are embracing the use and recognition of Persistent Identifiers such as DOIs, and are driving progress towards high-level sample classification. We are responsible for data publications and for providing electronic logbook functionality; these services are available to all researchers at our facility.
Status of the GEO 600 squeezed-light laser
Creators: name: Khalaidovski, Alexander
name: Vahlbruch, Henning
name: Lastzka, Nico
name: Graef, Christian
name: Lueck, Harald
name: Danzmann, Karsten
name: Grote, Hartmut
name: Schnabel, Roman
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In the course of the high-frequency upgrade of GEO 600, its optical configuration was extended by a squeezed-light laser [1]. Recently, a non-classically enhanced measurement sensitivity of GEO 600 was reported [2]. In this paper, a characterization of the squeezed-light laser is presented. Thereupon, the status of the integration into GEO 600 is reviewed, focussing on the sources of optical loss limiting the shot noise reduction by squeezing at the moment. Finally, the possibilities for a future loss reduction are discussed.
description: Proceeding of the 9th Edoardo Amaldi Conference on Gravitational Waves
"unsere Zeltkirche - euer Münster"
Creators: name: Drape-Müller, Christiane
Publisher: name: Unser Münster / Die Informationsschrift des Münsterbauvereins Breisach e.V.
Year: 2019

description: Unser Münster / Die Informationsschrift des Münsterbauvereins Breisach e.V., Nr. 56 (2019): Unser Münster: 1650 Jahre Stadt Breisach
Chandra High Energy Grating Observations of the Fe Ka Line Core in Type 2 Seyfert Galaxies: A Comparison with Type 1 Nuclei
Creators: name: Shu, Xinwen
name: Yaqoob, Tahir
name: Wang, Junxian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a study of the core of the Fe Ka emission line at ~6.4 keV in a sample of type II Seyfert galaxies observed by the Chandra High Energy Grating (HEG). The sample consists of 29 observations of 10 unique sources. We present measurements of the Fe Ka line parameters with the highest spectral resolution currently available. In particular, we derive the most robust intrinsic line widths for some of the sources in the sample to date. We obtained a weighted mean FWHM of 2000 \pm 160 km/s for 8 out of 10 sources (the remaining sources had insufficient signal-to-noise). From a comparison with the optical emission-line widths obtained from spectropolarimetric observations, we found that the location of Fe Ka line-emitting material is a factor of ~0.7-11 times the size of the optical BLR. Furthermore, compared to 13 type I AGNs for which the best Fe Ka line FWHM constraints were obtained, we found no difference in the FWHM distribution or the mean FWHM, and this conclusion is independent of the central black hole mass. This result suggests that the bulk of the Fe Ka line emission may originate from a universal region at the same radius with respect to the gravitational radius, ~30,000 Rg on average. By examining the correlation between the Fe Ka luminosity and the [O IV] line luminosity, we found a marginal difference in the Fe K line flux between type I and type II AGNs, but the spread in the ratio of L(Fe) to L([O IV]) is about two orders of magnitude. Our results confirm the theoretical expectation that the Fe Ka emission-line luminosity cannot trivially be used as a proxy of the intrinsic AGN luminosity, unless a detailed comparison of the data with proper models is applied.
description: 16 pages, 6 figures, and 2 tables, accepted for publication in ApJ
Bayesian analysis of polarization measurements
Creators: name: Quinn, Jason L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A detailed and formal account of polarization measurements using Bayesian analysis is given based on the assumption of gaussian error for the Stokes parameters. This analysis is crucial for the measurement of the polarization degree and angle at very low (and very high) signal-to-noise. The treatment serves as a framework for customized analysis of data based on a particular prior suited to the experiment.
description: 15 pages
MANUALE DI PROPAGAZIONE DELLE SPECIE DEGLI AMBIENTI DUNALI ADRIATICI
Creators: name: de Francesco, Maria Carla
name: Buffa, Gabriella
name: Ciocca, Salvatore
name: Del Vecchio, Antonio
name: Del Vecchio, Silvia
name: Fantinato, Edy
name: Fiorentin, Rioberto
name: Iannotta, Francesco
name: Pernigotto Cego, Francesco
name: Piccolo, Federica
name: Stanisci, Angela
name: Tozzi, Francesco Pio
Publisher: name: Zenodo
Year: 2022
Subjects: coastal
plant species
nursery

description: Il manuale si colloca nell’ambito dei progetti LIFE17 NAT/IT/000565 CALLIOPE (Coastal dune hAbitats, subLittoraL sandbanks, marine reefs: cOnservation, Protection, and thrEats Mitigation) e LIFE16 NAT/IT/000589 REDUNE - (REstoration of DUNE habitats in Natura 2000 sites of the Veneto coast) e come capitalizzazione delle azioni del progetto LIFE10 NAT/IT/000262 MAESTRALE (Azioni MirAtE al ripriSTino e alla conservazione degli habitat dunali e RetrodunAli in moLisE), tutti cofinanziati dal Programma LIFE, strumento dell'Unione Europea per la salvaguardia dell'ambiente che sostiene azioni a favore della natura negli Stati membri. I progetti propongono il ripristino/recupero di ambienti dunali mediante produzione e impianto di essenze vegetali locali, prodotte a partire da semi raccolti in campo da popolazioni vegetali adeguate dal punto di vista genetico, fisiologico e sanitario, al fine di
 tutelare e valorizzare la biodiversità delle aree costiere. Il manuale rappresenta una sintesi delle esperienze di produzione vivaistica delle principali specie dunali propagate all’interno dei progetti LIFE CALLIOPE, LIFE REDUNE e LIFE MAESTRALE con lo scopo di fornire informazioni tecnico-pratiche per una produzione efficiente e facilmente replicabile anche in altri contesti e progetti di ripristino/recupero ambientale, in cui è di fondamentale importanza disporre di materiale nativo caratterizzato da una elevata variabilità genetica. Questa, infatti, garantisce una migliore adattabilità, consentendo di massimizzare le probabilità di successo dell’intervento, e contribuisce alla creazione di habitat stabili con elevato valore naturalistico.
 Il manuale è rivolto a tecnici delle banche del germoplasma, vivaisti e addetti ai lavori in ambito istituzionale e le indicazioni fornite riguardano la fase di raccolta dei semi, la loro conservazione fino al momento del loro utilizzo e i successivi trattamenti in grado di
 massimizzare la germinazione e la produzione di nuove piante, nel rispetto delle procedure e degli standard nazionali e internazionali (ENSCONET, http://ensconet.maich.gr/Download.htm; Royal Botanic Gardens Kew 2021, http://data.kew.org/sid/).
description: Manuale con schede pratiche per la propagazione in serra e a pieno campo di specie erbacee e arbustive delle aree dunali costiere adriatiche. Cofinanziato dal programma LIFE, progetti LIFE17 NAT/IT/000565 CALLIOPE e LIFE16 NAT/IT/000589 REDUNE.
description: {"references": ["de Francesco et al., 2022"]}
MANUALE DI PROPAGAZIONE DELLE SPECIE DEGLI AMBIENTI DUNALI ADRIATICI
Creators: name: de Francesco, Maria Carla
name: Buffa, Gabriella
name: Ciocca, Salvatore
name: Del Vecchio, Antonio
name: Del Vecchio, Silvia
name: Fantinato, Edy
name: Fiorentin, Rioberto
name: Iannotta, Francesco
name: Pernigotto Cego, Francesco
name: Piccolo, Federica
name: Stanisci, Angela
name: Tozzi, Francesco Pio
Publisher: name: Zenodo
Year: 2022
Subjects: coastal
plant species
nursery

description: Il manuale si colloca nell’ambito dei progetti LIFE17 NAT/IT/000565 CALLIOPE (Coastal dune hAbitats, subLittoraL sandbanks, marine reefs: cOnservation, Protection, and thrEats Mitigation) e LIFE16 NAT/IT/000589 REDUNE - (REstoration of DUNE habitats in Natura 2000 sites of the Veneto coast) e come capitalizzazione delle azioni del progetto LIFE10 NAT/IT/000262 MAESTRALE (Azioni MirAtE al ripriSTino e alla conservazione degli habitat dunali e RetrodunAli in moLisE), tutti cofinanziati dal Programma LIFE, strumento dell'Unione Europea per la salvaguardia dell'ambiente che sostiene azioni a favore della natura negli Stati membri. I progetti propongono il ripristino/recupero di ambienti dunali mediante produzione e impianto di essenze vegetali locali, prodotte a partire da semi raccolti in campo da popolazioni vegetali adeguate dal punto di vista genetico, fisiologico e sanitario, al fine di
 tutelare e valorizzare la biodiversità delle aree costiere. Il manuale rappresenta una sintesi delle esperienze di produzione vivaistica delle principali specie dunali propagate all’interno dei progetti LIFE CALLIOPE, LIFE REDUNE e LIFE MAESTRALE con lo scopo di fornire informazioni tecnico-pratiche per una produzione efficiente e facilmente replicabile anche in altri contesti e progetti di ripristino/recupero ambientale, in cui è di fondamentale importanza disporre di materiale nativo caratterizzato da una elevata variabilità genetica. Questa, infatti, garantisce una migliore adattabilità, consentendo di massimizzare le probabilità di successo dell’intervento, e contribuisce alla creazione di habitat stabili con elevato valore naturalistico.
 Il manuale è rivolto a tecnici delle banche del germoplasma, vivaisti e addetti ai lavori in ambito istituzionale e le indicazioni fornite riguardano la fase di raccolta dei semi, la loro conservazione fino al momento del loro utilizzo e i successivi trattamenti in grado di
 massimizzare la germinazione e la produzione di nuove piante, nel rispetto delle procedure e degli standard nazionali e internazionali (ENSCONET, http://ensconet.maich.gr/Download.htm; Royal Botanic Gardens Kew 2021, http://data.kew.org/sid/).
description: Manuale con schede pratiche per la propagazione in serra e pieno campo delle specie erbacee e arbustive delle dune costiere adriatiche. Cofinanziato dal programma LIFE, progetti LIFE17 NAT/IT/000565 CALLIOPE e LIFE16 NAT/IT/000589 REDUNE.
description: {"references": ["de Francesco et al., 2022"]}