cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electromagnetic Duality and New Solutions of the Non-minimally Coupled Y(R)-Maxwell Gravity
Creators: name: Sert, Özcan
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Non-minimally coupled Y(R)-Maxwell gravity which have some interesting solutions may be used to understand dark matter, dark energy, the origin of cosmic magnetic field and the evaluation of the universe. We give some new solutions to the model such as spherically symmetric electric, magnetic and dyon solutions. We point out an existence of an electromagnetic duality transformation for the model.
description: 10 pages, accepted for publication in MPLA
Rapid and Long-term Measures for Prevention and Mitigation of Communication Barriers in Production Networks
Creators: name: Kelber, Michael
name: Noennig, Jörg Rainer
name: Nyhuis, Peter
Publisher: name: Hannover : publish-Ing.
Year: 2020
Subjects: subject: Production Networks
subject: Communication
subject: Communication Barriers
subject: Precautions
subject: Countermeasures
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Due to the constantly increasing complexity and dynamic of modern production networks within value chains, effective communication between the individual corporations is required. Communication barriers, can lead to delays in the value creation process, which can lead to losses of efficiency in the entire production network. Within the framework of "InterKom", a joint research project of the WISSENSARCHITEKTUR Laboratory of Knowledge Architecture at TU Dresden and the Institute for Factory Systems and Logistics at Leibniz University Hanover, corresponding measures were developed on the basis of previously identified communication barriers in the context of production networks. These insights can be used to prevent communication barriers between suppliers, producers or consumers or to mitigate them as soon as they occur. The aim of the project is to provide a catalogue with precautions and countermeasures for corporations that supports the removal of communication barriers in the future.
Probing photoinduced two-body loss of ultracold non-reactive bosonic 23Na87Rb and 23Na39K molecules, Physical Review Letters
Creators: name: Gersema, Philipp
name: Voges, Kai K.
name: Meyer Zum Alten Borgloh, Mara
name: Koch, Leon
name: Hartmann, Torsten
name: Zenesini, Alessandro
name: Lin, Junyu
name: He, Junyu
name: Wang, Dajun
Publisher: name: College Park, MD : American Physical Society (APS)
Year: 2021
Subjects: subject: Atomic and molecular physics
subject: quantum gases
subject: Atom- und Molekülphysik
subject: Ultrakalte Gase
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We probe photo-induced loss for chemically stable bosonic 23Na87Rb and 23Na39K molecules in chopped optical dipole traps where the molecules spend a significant time in the dark. We expect the effective two-body decay to be largely suppressed in chopped traps due to the small expected complex lifetimes of about 13μs and 6μs for 23Na87Rb and 23Na39K respectively. However, instead we do observe near-universal loss even at the lowest chopping frequencies we can probe. Our data thus either suggest a so far unknown loss mechanism or a drastic underestimation of the complex lifetime by at least one to two orders of magnitude.
Persicaria L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. Persicaria L. Cat. 312. Verbreitet (auch Simplonsüdseite).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Measurements and analysis of response function of cold atoms in optical molasses
Creators: name: Bhar, Subhajit
name: Swar, Maheswar
name: Satpathi, Urbashi
name: Sinha, Supurna
name: Sorkin, Rafael D.
name: Chaudhuri, Saptarishi
name: Roy, Sanjukta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report our experimental measurements and theoretical analysis of the position response function of a cloud of cold atoms residing in the viscous medium of an optical molasses and confined by a magneto-optical trap (MOT). We measure the position response function by applying a transient homogeneous magnetic field as a perturbing force. We observe a transition from a damped oscillatory motion to an over-damped relaxation, stemming from a competition between the viscous drag provided by the optical molasses and the restoring force of the MOT. Our observations are in both qualitative and quantitative agreement with the predictions of a theoretical model based on the Langevin equation. As a consistency check, and as a prototype for future experiments, we also study the free diffusive spreading of the atomic cloud in our optical molasses with the confining magnetic field of the MOT turned off. We find that the measured value of the diffusion coefficient agrees with the value predicted by our Langevin model, using the damping coefficient. The damping coefficient was deduced from our measurements of the position response function at the same temperature.
Spectra of geometric operators in three-dimensional LQG: From discrete to continuous
Creators: name: Achour, Jibril Ben
name: Geiller, Marc
name: Noui, Karim
name: Yu, Chao
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study and compare the spectra of geometric operators (length and area) in the quantum kinematics of two formulations of three-dimensional Lorentzian loop quantum gravity. In the SU(2) Ashtekar-Barbero framework, the spectra are discrete and depend on the Barbero-Immirzi parameter $γ$ exactly like in the four-dimensional case. However, we show that when working with the self-dual variables and imposing the reality conditions the spectra become continuous and $γ$-independent.
description: 13 pages. 2 figures
title: Möbel aus Franken. Oberflächen und Hintergründe. 22. Juni - 15. September 1991. Eine Ausstellung im Germanischen Nationalmuseum. Gemeinschaftsausstellung des Bayerischen Nationalmuseums München und des Germanischen Nationalmuseums Nürnberg
Creators: name: Maierbacher-Legi, Gerdi
name: Bauer, Ingolf
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
Halicnemia verticillata
Creators: name: Morrow, Christine
name: Cárdenas, Paco
name: Boury-Esnault, Nicole
name: Picton, Bernard
name: Mccormack, Grace
name: Soest, Rob Van
name: Collins, Allen
name: Redmond, Niamh
name: Maggs, Christine
name: Sigwart, Julia
name: Allcock, Louise A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Axinellida
Stelligeridae
Halicnemia
Halicnemia verticillata

description: HALICNEMIA VERTICILLATA (BOWERBANK, 1866)
(FIG. 14A–F)
Bubaris verticillata (Bowerbank, 1866)
Hymeraphia verticillata Bowerbank, 1866 (p. 145–146) Laonaenia verticillata (Bowerbank, 1866)
Naenia verticillata (Bowerbank, 1866)
Material examined: Syntypes BMNH 10.1.1.2389– 2392, Porcupine Expedition 1868, 345 fathoms (631 m), 40 miles NNW of Shetland, Norman Collection (slide only).
BMNH 10.1.1.2388, Trondheim, Norway, Norman Collection (slide only).
BMNH 1406.70.5.3.21, Marquesas, Florida (Schmidt, 1870).
BELUM Mc6786, Boue Tirlipois, Channel Isles, 49°24.427′N, 2°23.183′W, 36 m, 25 June 2010, coll. B. Picton, det. C. Morrow.
BELUM Mc 5018, Galway Bay, Ireland, 53°15.080′N, 9°59.420′W, 38 m, 17 August 1993, coll. C. Morrow, det. C. Morrow.
BELUM Mc 2018.4, Whittard Canyon, Ireland, 54°03.36′N, 12°33.28′W, Event 15, 1400 m, 4 June 2013, coll. C. Morrow, det. C. Morrow.
Field # 40-10(6), off Tromsø, Sotbakken, Northern Norway, 70°45.46′N, 18°40.48′E, Polarstern ARK-XXII/1a expedition, van veen grab, station 40-10, 18 June 2007, 273 m, coll. P. Cárdenas., det. P. Cárdenas.
Description: (BMNH 10.1.1.2389) Megascleres: Large tylostyles 2–3 mm × 4–7 µm (N = 4), tylostyle head 10–16 µm (Fig. 14A).
A c c e s s o r y o x e a s: C e n t r o t y l o t e o x e a 6 0 0 – 800 µm × 5–10 µm; centrotylote swelling 10–17 µm. The centrotylote oxeas have distinctive fissurate ends (Fig. 14C).
Microscleres: Acanthoxeas in a wide range of sizes (50– 400 µm × 5–10 µm), with spines arranged in verticils (Fig. 14D).
Reproduction: The presence of oocytes was observed in BELUM Mc6786, collected in June from the channel Islands, 36 m.
description: Published as part of Morrow, Christine, Cárdenas, Paco, Boury-Esnault, Nicole, Picton, Bernard, Mccormack, Grace, Soest, Rob Van, Collins, Allen, Redmond, Niamh, Maggs, Christine, Sigwart, Julia & Allcock, Louise A., 2019, Integrating morphological and molecular taxonomy with the revised concept of Stelligeridae (Porifera: Demospongiae), pp. 31-81 in Zoological Journal of the Linnean Society 187 on pages 59-60
Efficient algorithm to study interconnected networks
Creators: name: Schneider, Christian M.
name: Araújo, Nuno A. M.
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Interconnected networks have been shown to be much more vulnerable to random and targeted failures than isolated ones, raising several interesting questions regarding the identification and mitigation of their risk. The paradigm to address these questions is the percolation model, where the resilience of the system is quantified by the dependence of the size of the largest cluster on the number of failures. Numerically, the major challenge is the identification of this cluster and the calculation of its size. Here, we propose an efficient algorithm to tackle this problem. We show that the algorithm scales as O(N log N), where N is the number of nodes in the network, a significant improvement compared to O(N^2) for a greedy algorithm, what permits studying much larger networks. Our new strategy can be applied to any network topology and distribution of interdependencies, as well as any sequence of failures.
description: 5 pages, 6 figures
Stochastic universals and dynamics of cross-linguistic distributions: the case of alignment types (Unpublished, Stanford University)
Creators: name: Maslova, Elena
name: Nikitina, Tatiana
Publisher: name: Zenodo
Year: 2008

description: The paper reports the results of a cross-linguistic study of alignment types for full NPs, based on a sample of 400 languages. The novelty of this study lies in combining different cross-linguistic statistical measures in order to detect systematic differences in probabilities of type shifts, which is viewed as a prerequisite for establishing genuinely linguistic stochastic universals, free from non-linguistic random effects (Greenberg 1978; 1995). In particular, our evidence reveals a considerably stronger linguistic preference for morphological nominativity over morphological ergativity than previously suggested (Nichols 1992: 69; Comrie 1989: 124-126; Comrie 2005), with nominative alignment being at least three times more stable than ergative alignment. (The paper was originally published on Maslova's website, at https://anothersumma.net/Publications/ProbabilityPubl.html)
Tomography scheme for two spin-1/2 qubits in a double quantum dot
Creators: name: Rohling, Niklas
name: Burkard, Guido
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a scheme for full quantum state tomography tailored for two spin qubits in a double quantum dot. A set of 15 quantum states allows to determine the density matrix in this two-qubit space by projective measurement. In this paper we choose a set gained from mutually unbiased bases. We determine how those 15 projections can be represented by charge measurements after a spin-to-charge conversion and the application of quantum gates. The quantum gates include exchange-based gates as well as rotations by electron spin resonance (ESR). We assume the experimental realization of ESR operations to be more difficult than the exchange gate operation. Therefore, it is an important result that the ESR gates are limited by a pi/2 rotation for one of the electron spins per measurement.
description: 23 single-column pages, 2 figures
Discrete-Time Quantum-Walk & Floquet Topological Insulators via Distance-Selective Rydberg-Interaction
Creators: name: Khazali, Mohammadsadegh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: This article proposes the first discrete-time implementation of Rydberg quantum walk in multi-dimensional spatial space that could ideally simulate different classes of topological insulators. Using distance-selective exchange-interaction between Rydberg excited atoms in an atomic array with dual lattice-constants, the new setup operates both coined and coin-less models of discrete-time quantum walk (DTQW). Here, complicated coupling tessellations are performed by a global laser that exclusively excites the site at the anti-blockade region. The long-range interaction provides a new feature of designing different topologically ordered periodic boundary conditions. Limiting the Rydberg population to two excitations, coherent QW over hundreds of lattice sites and steps are achievable with the current technology. These features would improve the performance of this quantum machine in running the quantum search algorithm over topologically ordered databases as well as diversifying the range of topological insulators that could be simulated.
FPGA-basierte aktive Gegenkopplung der Schaltharmonischen von leistungselektronischen Systemen
Creators: name: Bendicks, Andreas
name: Dörlemann, Tobias
name: Frei, Stephan
name: Hee, Norbert
name: Wiegand, Marc
Publisher: name: Frankfurt/Main : mesago
Year: 2018
Subjects: subject: Gegenkopplung
subject: Abtastrate
subject: Leistungselektronik
subject: Implementierung
subject: feldprogrammierbare Gate-Array-Schaltung
subject: elektromagnetische Verträglichkeit
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In diesem Beitrag wurde eine neuartige Gegenkoppelstrategie vorgestellt, durch welche die Schaltharmonischen eines leistungselektronischen Systems unterdrückt werden können. Zu Beginn wurde eine allgemeine Theorie zur adaptiven Gegenkopplung von Harmonischen eingeführt. Zu dieser Theorie wurden zwei wesentliche Implementierungsvarianten vorgestellt und diskutiert: Die Gegenkopplung von Harmonischen mit kontinuierlicher Adaption und die Gegenkopplung von Harmonischen mit einmaliger Adaption. Im Folgenden wurde eine konkrete Implementierung zur Gegenkopplung von Harmonischen mit kontinuierlicher Adaption auf einem FPGA-System vorgestellt. Dieses System wurde daraufhin an einem leistungselektronischen Demonstrator angewendet. In Messungen konnte gezeigt werden, dass erhebliche Störungsreduktionen von über 50 dB erzielt werden konnten. Die Systemgrenzen des Gegenkoppelsystems wurden hinsichtlich der Abtastrate, der Synchronisation, der Quantisierung des A/D- und D/A-Wandlers sowie der Hardwarekapazitäten diskutiert. Optimierungsmöglichkeiten wurden aufgezeigt.
title: Gesetz zur frühen Bildung und Förderung von Kindern (Kinderbildungsgesetz - KiBiz)
title: Weiterentwicklung der Kindertagesbetreuung in Nordrhein-Westfalen
titleType: AlternativeTitle
Creators: name: Stöbe-Blossey, Sybille
Publisher: name: DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany
Year: 2018

description: Am 1. August 2008 trat in Nordrhein-Westfalen das Kinderbildungsgesetz (KiBiz) in Kraft, das die Kindertagesbetreuung in Nordrhein-Westfalen neu regelte. Nach dem Regierungswechsel im Jahr 2010 nahm die neue Landesregierung eine Revision des KiBiz in Angriff. Die IAQ-Stellungnahme zur ersten Stufe der Revision des KiBiz (Gemeinsame öffentliche Anhörung des Ausschuss für Familie, Kinder und Jugend, des Ausschusses für Kommunalpolitik und des Haushalts- und Finanzausschusses vom 22. Juni 2011) ist im Folgenden dokumentiert. Die erste Stufe der Revision ist inzwischen in Kraft getreten (http://www.mfkjks.nrw.de/kinder-und-jugend/kibiz-aenderungsgesetz/); im Hinblick auf die geplante zweite Revisionsstufe sind die Inhalte der Stellungnahme weiterhin aktuell.
Detection of subsidence in Bad Frankenhausen with time series analysis of interferometric Radar
Creators: name: Schumann, Robert
name: Vajedian, Sanaz
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Subsidence
subject: interferometric Radar
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: The area of Bad Frankenhausen, a small city in Thuringia in central Germany is subject to land subsidence because of the occurrence of sinkholes. We use SAR interferometry (InSAR) time series analysis to monitor the subsidence in this area. All the available C-band Sentinel-1A data in both geometries of ascending and descending are collected in this study. We exploit Small BAseline Subset (SBAS) as a time series algorithm to derive the subsidence rate of the study area. The accuracy of the SBAS time series analysis could be affected by high rate of atmospheric artifacts especially over the humid area, therefore, selection of the appropriate method of the atmospheric correction is required. In this study, a statistical based atmospheric correction method is performed to decrease the atmospheric influence The time series analysis result in both geometries show a low rate of deformation signal along LOS directions with nearly negative sign corresponding subsidence phenomena. Availability of the InSAR time series results in both ascending and descending tracks enables us to estimate the horizontal and vertical displacement using the decomposition process.. The results show a very small rate of movement, almost zero, along with horizontal direction. Vertical displacements with a maximum subsidence rate of 1.4 mm/a$ are observed over the area. The results of the time series analysis are partially compared to GNSS and leveling data.
Kinetic modeling study on the combustion characterization of synthetic C3 and C4 alcohols for lean premixed prevaporized combustion
Creators: name: Nadiri, Solmaz
name: Zimmermann, Paul
name: Sane, Laxmi
name: Fernandes, Ravi
name: Dinkelacker, Friedrich
name: Shu, Bo
Publisher: name: Basel : MDPI AG
Year: 2021
Subjects: subject: Chemical kinetic modeling
subject: E-fuels
subject: Ignition delay time
subject: Laminar burning velocity
subject: Lean premixed prevaporized
subject: Carbon dioxide
subject: Combustion
subject: Engines
subject: Isomers
subject: Predictive analytics
subject: Shock tubes
subject: Temperature
subject: Combustion characterization
subject: Emissions prediction
subject: High pressure shock tubes
subject: Lean premixed prevaporized combustions
subject: Low-temperature oxidation
subject: Renewable resource
subject: Synthetic fuels
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: To reach sustainable aviation, one approach is to use electro-fuels (e-fuels) within the gas turbine engines. E-fuels are CO2-neutral synthetic fuels which are produced employing electrical energy generated from renewable resources, where the carbon is taken out of the atmosphere or from biomass. Our approach is, to find e-fuels, which can be utilized in the lean premixed prevapor-ized (LPP) combustion, where most of the non-CO2 emissions are prevented. One of the suitable e- fuel classes is alcohols with a low number of carbons. In this work, the autoignition properties of propanol isomers and butanol isomers as e-fuels were investigated in a high-pressure shock tube (HPST) at temperatures from 1200 to 1500 K, the pressure of 10 bar, and lean fuel-air conditions. Additional investigations on the low-temperature oxidation and flame speed of C3 and C4 alcohols from the literature were employed to develop a comprehensive mechanism for the prediction of ignition delay time (IDT) and laminar burning velocity (LBV) of the above-mentioned fuels. A numerical model based on newly developed chemical kinetics was applied to further study the IDT and LBV of fuels in comparison to the Jet-A surrogate at the engine-related conditions along with the emissions prediction of the model at lean fuel-air conditions. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Have heads cooled? Changes in radical partisanship from 2020–2022
Creators: name: Sandlin, Evan W.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Recent polling shows significant levels of radical partisanship among the US public in the form of violent partisan schadenfreude and violent partisan attitudes. Previous research shows that the partisan intensity underlying these sentiments increases around presidential elections and when political actors use violent rhetoric. Has lethal mass partisanship declined in the years after the 2020 election, especially now that one of the main purveyors of violent rhetoric has left office? This paper uses panel data from the Understanding America Study (UAS) to show how levels of radical partisanship have changed from the post-election period of 2020 to the same time period in 2021 and 2022. The results demonstrate that rates of violent partisan attitudes have declined in 2021 and 2022 compared to 2020, especially amongst those who were most supportive of former President Donald Trump. However, changes in partisan schadenfreude have no discernable pattern. The results demonstrate both that radical partisanship is not on a uniformly upward trajectory but likely decreases and increases with changes in political context, and that elements of radical partisanship do not vary in parallel.
Unraveling Two-Photon Entanglement via the Squeezing Spectrum of Light Traveling through Nanofiber-Coupled Atoms
Creators: name: Hinney, Jakob
name: Prasad, Adarsh S.
name: Mahmoodian, Sahand
name: Hammerer, Klemens
name: Rauschenbeutel, Arno
name: Schneeweiss, Philipp
name: Volz, Jürgen
name: Schemmer, Max
Publisher: name: College Park, Md. : APS
Year: 2021
Subjects: subject: Atoms
subject: Light
subject: Nanofibers
subject: Optical fibers
subject: Photons
subject: Quantum entanglement
subject: Quantum optics
subject: Atomic ensemble
subject: Energy-time
subject: Guided light
subject: Light fields
subject: Light traveling
subject: Lines shapes
subject: Photon entanglement
subject: Quadrature squeezing
subject: Spectra's
subject: Two photon
subject: Wave functions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: We observe that a weak guided light field transmitted through an ensemble of atoms coupled to an optical nanofiber exhibits quadrature squeezing. From the measured squeezing spectrum we gain direct access to the phase and amplitude of the energy-time entangled part of the two-photon wave function which arises from the strongly correlated transport of photons through the ensemble. For small atomic ensembles we observe a spectrum close to the line shape of the atomic transition, while sidebands are observed for sufficiently large ensembles, in agreement with our theoretical predictions. Furthermore, we vary the detuning of the probe light with respect to the atomic resonance and infer the phase of the entangled two-photon wave function. From the amplitude and the phase of the spectrum, we reconstruct the real and imaginary part of the time-domain wave function. Our characterization of the entangled two-photon component constitutes a diagnostic tool for quantum optics devices. © 2021 authors. Published by the American Physical Society.
Where do people want to become entrepreneurs? Mapping entrepreneurship potential across Great Britain
Creators: name: Mewes, Lars
name: Ebert, Tobias
Publisher: name: London [u.a.] : Taylor & Francis
Year: 2021
Subjects: subject: cartography
subject: entrepreneurial potential
subject: entrepreneurship
subject: spatial smoothing
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft
subject: Dewey Decimal Classification::900 | Geschichte und Geografie::910 | Geografie, Reisen

description: Promoting entrepreneurial activities is crucial for regions to facilitate innovation and economic development. Yet, becoming an entrepreneur is not aspired by all people, and regions may differ considerably in their entrepreneurship potential. Assessing and providing accurate estimates of the entrepreneurship potential across fine-grained spatial scales is thus crucial to inform regional policymakers, but it still remains a major challenge due to data availability. Here we used the lab data set from the British Broadcasting Corporation (BBC) covering 368,364 individuals and providing high-resolution data about their residences to map the entrepreneurship potential across 9271 postcode sectors in Great Britain. We used a novel mapping approach that relies on a spatial smoothing function based on distance weights to utilize the most fine-grained spatial level available in the data. Our detailed maps show substantial difference in entrepreneurship potential across postcode sectors in Great Britain and within the largest cities: London, Birmingham and Manchester. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Assessing product portfolios from a production logistics perspective
Creators: name: Kämpfer, Tim
name: Lucht, Torben
name: Schäfers, Philipp
name: Nyhuis, Peter
Publisher: name: Hannover : publish-Ing.
Year: 2020
Subjects: subject: Product portfolio analysis
subject: Portfolio optimization
subject: Portfolio assessment
subject: Production logistics
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The increasing individualization and the growing customer demand for product variety leads to a constant shortening of product life cycles and to the necessity of periodically rationalizing product portfolios. For this reason, approaches to product portfolio assessment offer methods that allow a financial or market-oriented valuation of existing products in portfolios. When assessing products in product portfolios, conventional approaches do not explicitly take the logistical impact of products on the logistics performance or costs of the production into account. The consequence of neglecting the logistical assessment dimension to product portfolios is that products, that have a negative impact on the logistics performance of a company, are not part of a critical examination. This paper therefore presents an approach that aims at developing a methodology to assess product portfolios both from a logistical as well as from financial or market-oriented perspectives. To this end, the approach initially works the influence of individual products and product characteristics on the logistics performance and logistics costs of production out. The consolidation of these findings with further evaluation variables then enables a product portfolio optimization with explicit consideration of a logistic assessment dimension.
Analytic reconstruction of some dynamical systems
Creators: name: Gorodetskyi, V.
name: Osadchuk, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: 34C15, 34C28

description: We propose a reconstruction of the initial system of ordinary differential equations from a single observed variable. The suggested approach is applied to a certain class of systems which includes, in particular, the Rossler system and other chaotic systems. We develop relations and a method to pass from a model that involves the observable and its time derivatives to a real original system. To this end, we first find a set of candidates of the system in an analytic way. After that, by additionally studying the system, we make a choice for the sought system.
description: Corrected references
Effects on the deformation-induced martensitic transformation in AISI 304 in external longitudinal turning
Creators: name: Denkena, Berend
name: Breidenstein, Bernd
name: Dittrich, Marc-André
name: Nguyen, Hai Nam
name: Fricke, Lara Vivian
name: Maier, Hans Jürgen
name: Zaremba, David
Publisher: name: [Amsterdam] : Elsevier ScienceDirect
Year: 2021
Subjects: subject: Deformation-induced martensitic transformation
subject: Flank face modification
subject: Tool geometry
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: During the turning process of metastable austenitic steels, austenite is transformed into hard martensite by plastic deformation at low temperatures. This enables the production of components, which have both a hardened subsurface zone and a ductile core. Cryogenic cooling allows the subsurface zone to be hardened during machining, which leads to a shortening of the process chain. However, effects such as wear can make it challenging to adjust the properties of the subsurface zone during turning. By adjusting the tool microgeometry with a flank face modification, the wear condition can be kept constant for a certain period. In addition, the significance analysis with different tool microgeometries shows that only feed and initial temperature have a significant effect on the martensite formation. © 2021 The Author(s)
Persicaria lapathifolium
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. lapathifolium L. em. Koch Cat. 312. l: Daviaz (Marietan); St-Maurice (idem); Vernayaz (J.); Salvan (J., Wurgler); Les Marecottes (Wurgler); La Bätiaz (idem). - 2: Grimisuat (Wurgler). - 3: Martigny (Closuit); Riddes (J.); Nendaz (J., Wurgler); Rechy (Wurgler); Stalden (Vispertal) (A. Keller). - 3a:Gondound Umgebung (Becherer). Var. nodosum (Pers.) Gren. et Godron - l: Salvan (J.). - 2: Fully (Garns). - 4: Grengiols-Fiesch (Wilczek).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Charakterisierung neuer humaner antimikrobieller Peptide: LEAP-1, LEAP2 und humanes [beta]-Defensin 4
Creators: name: Krause, Alexander
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Innate immunity
subject: antimicrobial peptides
subject: defensins
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Aspekte des Bodenbewegungsdienstes Deutschlands
Creators: name: Lege, Thomas
name: Kalia, Andre
name: Frei, Michaela
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Radarinterferometrie
subject: PSI
subject: Bodenbewegungsdienst
subject: Copernicus
subject: Sentinel 1
subject: Kavernenspeicher
subject: JadeWeserPort
subject: Emsästuar
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: Deformationen der Erdoberfläche sind das Ergebnis geologischer Prozesse oder anthropogener Maßnahmen oder deren Kombination. Beispiele sind tektonische Bewegungen, Hangrutschungen, Subrosions-, Auslaugungs- und Quellprozesse. Die Deformationen treten darüber hinaus in Folge von Öl- und Gasextraktionen, Grundwasserbewirtschaftung, Verpressungen, Tunnelauffahrungen, Baugrubenmanagement oder Bergbau auf. Verformungen der Erdoberfläche lassen sich seit fast 30 Jahren millimetergenau mit der satellitengestützten Radarinterferometrie identifizieren und monitoren. Die Einsatzfähigkeit und Genauigkeit des Verfahrens ist durch zahlreiche nationale und internationale Forschungsprojekte, Pilotstudien und Anwendungsfälle nachgewiesen. Verursachen Bodenbewegungen Schäden, müssen die Ursachen ergründet und Fragen der Verantwortung und Kostenübernahme geklärt werden. Seit dem Start der Radarsatelliten Sentinel 1A und B des europäischen Copernicus Programms stehen flächendeckend umfangreiche Daten zum kostenfreien Download zur Verfügung. Unter Nutzung von Open-Source Software können inzwischen von zahlreichen Akteuren und Interessengruppen Deformationsdarstellung über die Erdoberfläche gewonnen und verbreitet werden. Daraus erwächst die Notwendigkeit für Verformungen der Erdoberfläche unabhängige, qualitätsgesicherte und allseits anerkannte Rahmenwerte, Entscheidungsgrundlagen und Prozessketten bereitzuhalten. Daher baut die BGR den satellitengestützten nationalen BodenBewegungsdienst Deutschland (BBD) auf (Kalia et al., 2017). Zurzeit sind zwei Datensätze des aufsteigenden und absteigenden Orbits der Copernicus-Satellitenmission Sentinel-1 prozessiert. Sie decken als konsistente Datensätze die gesamte Fläche Deutschlands ab. Im Beitrag wird der Sachstand des BBD präsentiert und ein Blick auf die ersten bundesweiten Datensätze mit Bezug zu geotechnischen und bergbaulichen Anwendungen geworfen. Darüber hinaus wird schlaglichtartig der Einsatz der Radarinterferometrie in Europa, auch Deutschland betreffend, beleuchtet.
Rayleigh-Taylor instability in an ionized medium
Creators: name: Shadmehri, Mohsen
name: Yaghoobi, Asiyeh
name: Khajavi, Mahdi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study linear theory of the magnetized Rayleigh-Taylor instability in a system consisting of ions and neutrals. Both components are affected by a uniform vertical gravitational field. We consider ions and neutrals as two separate fluid systems where they can exchange momentum through collisions. However, ions have direct interaction with the magnetic field lines but neutrals are not affected by the field directly. The equations of our two-fluid model are linearized and by applying a set of proper boundary conditions, a general dispersion relation is derived for our two superposed fluids separated by a horizontal boundary. We found two unstable modes for a range of the wavenumbers. It seems that one of the unstable modes corresponds to the ions and the other one is for the neutrals. Both modes are reduced with increasing the collision rate of the particles and the ionization fraction. We show that if the two-fluid nature is considered, RT instability would not be suppressed and also show that the growth time of the perturbations increases. As an example, we apply our analysis to the Local clouds which seems to have arisen because of the RT instability. Assuming that the clouds are partially ionized, we find that the growth rate of these clouds increases in comparison to a fully ionized case.
description: Accepted for publication in Astrophysics and Space Science
title: Rente mit 67: Nicht für alle zu erreichen
Creators: name: Brussig, Martin
Publisher: name: DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany
Year: 2018

description: Stellungnahme zur öffentlichen Anhörung des Bundestagsausschusses für Arbeit und Soziales am 21.02.2011 zur Unterrichtung durch die Bundesregierung (BT-Drs. 17/3814), zu dem Gesetzentwurf der Fraktion Die Linke (BT-Drs. 17/3546) und den Anträgen der Fraktionen der SPD, Bündnis 90/Die Grünen sowie Die Linke (BT-Drs. 17/3995, 17/4046, 17/2935)

Zusammenfassung
Für die gesellschaftliche Akzeptanz der „Rente mit 67“ ist entscheidend, ob die Verlängerung der Erwerbsphase möglich ist – und unter welchen Bedingungen. Die empirischen Entwicklungen der letzten Jahre zeigen eine deutliche Zunahme der Alterserwerbsbeteiligung, die in erster Linie aus verlängerten Erwerbsphasen resultiert. Zugleich ist offenkundig, dass ein erheblicher Teil der Erwerbspersonen die schon heute bestehenden Altersgrenzen für die Altersrente nicht aus Erwerbstätigkeit heraus erreicht. Für diesen Personenkreis sollten sozialverträgliche Optionen entwickelt werden, die das vorhandene individuelle Arbeitsvermögen nutzen, bewahren und entwickeln, Altersarmut aufgrund des Altersübergangs vermeiden und Möglichkeiten für einen selbstbestimmten Übergang eröffnen. Weiterhin sollten für die Versichertengemeinschaft tragbare Modelle für diejenigen entwickelt werden, die im Altersübergang Flexibilität und Zeitwohlstand anstreben. Beide Ziele können zueinander in Konflikt geraten.
Um einen längeren Verbleib in Erwerbstätigkeit zu unterstützen, sind die Humanisierung der Arbeitswelt und die Weiterentwicklung der Arbeitsmarktpolitik voranzutreiben. Mehr Sozialverträglichkeit im Altersübergang lassen sich durch den Verzicht auf Abschläge in der Er-werbsminderungsrente und Änderungen im SGB II – und hier insbesondere den Verzicht auf die Pflicht zur Inanspruchnahme einer abschlagsbehafteten Altersrente vor Erreichen der Regelaltersgrenze sowie durch die Entwicklung zusätzlicher Möglichkeiten für erwerbsfähige Hilfebedürftige mit eingeschränkter Erwerbsfähigkeit – erreichen. Mehr Flexibilität im Altersübergang ist durch eine Weiterentwicklung der Teilrente und der Altersteilzeitarbeit möglich.
Die Maßnahmen im Einzelnen und ihr Zusammenwirken sollten so angelegt werden, dass sie die derzeitige Entwicklung einer stärkeren Erwerbsbeteiligung von Menschen im rentennahen Alter nicht bremsen, sondern unterstützen.
title: Möbel aus Franken. Oberflächen und Hintergründe. 22. Juni - 15. September 1991. Eine Ausstellung im Germanischen Nationalmuseum. Gemeinschaftsausstellung des Bayerischen Nationalmuseums München und des Germanischen Nationalmuseums Nürnberg
Creators: name: Deneke, Bernward
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
Regional and Ethnic Disparities of School-to-Work Transitions in Bulgaria
Creators: name: Imdorf, Christian
name: Ilieva-Trichkova, Petya
name: Stoilova, Rumiana
name: Boyadjieva, Pepka
name: Gerganov, Alexander
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: regional disparities
subject: school-to-work transition
subject: ethnicity
subject: Bulgaria
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: Bulgaria’s educational and economic landscapes are marked by substantial regional disparities that are interlaced with ethnic inequalities in school-to-work transitions. Young adults from Roma and Turkish origins particularly suffer from disadvantages with respect to education and labour market participation. We ask how ethnicity affects labour market entry in Bulgaria once educational resources of different ethnic groups are accounted for, and how regional contexts impact ethnic disparities in employment insecurities. Building on comparative school-to-work transition (STWT) concepts and on the labour queueing approach, we assume that ethnic disparities in the STWTs of youths in Bulgaria depend on the degree of urbanisation and the strength and structure of the regional economy. The study draws on data from the Bulgarian School Leaver Survey 2014 of 2103 young adults who had left education in the five years preceding the survey. Descriptive analysis and multilevel logistic regression models were applied to analyse STWT patterns with a special focus on education, regional contexts, and ethnicity. The results highlight that STWT risks differ considerably across the Bulgarian regions. The strength of the local economy thereby moderates ethnic disparities. Young people from Roma and Turkish origins are much less disadvantaged to transition towards employment compared to ethnic Bulgarians the stronger the local economy gets. Our study has several policy implications. In addition to the development of public and private employment opportunities for disadvantaged young people, special attention should also be paid to the development of quality vocational education at the national and regional level
Cosmological solutions from 5D $N=4$ matter-coupled supergravity
Creators: name: Dao, H. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: From five-dimensional $N=4$ matter-coupled gauged supergravity, smooth time-dependent cosmological solutions, connecting a $dS_{5-d}\times H^d$ (with $d=2,3$) spacetime at early times to a $dS_5$ spacetime at late times, are presented. The solutions are derived from the second-order equations of motion arising from all the gauged theories that can admit $dS_5$ solutions. There are eight such theories constructed from gauge groups of the form $SO(1,1)\times G_{nc}$ and $SO(1,1)^{(n)}_\text{diag}\times G_{nc}$, with $n=2,3$, where $G_{nc}$ is a non-compact gauge factor whose compact part must be embedded entirely in the matter symmetry group of 5D matter-coupled supergravity. Furthermore, we analyze how the cosmological solutions and their corresponding $dS_5$ vacua cannot arise from the first-order equations that solve the second-order field equations.
description: v1: 10 figures, 40 pages. v2: slight modifications together with more added details in section 6, plus more references added. v3:More clarifying details + references added. v4: Minor clarifying details added, published version
Einfluss von Komposten und Stallmist auf Bodeneigenschaften und Wachstum von Ligustrum vulgare L
Creators: name: Kremer, Peter
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Compost
subject: tree nursery
subject: soil organic matter
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Boost synergies in research and innovation funding
Creators: name: CESAER
Publisher: name: Zenodo
Year: 2022

description: Full press release on cesaer.org: https://www.cesaer.org/news/infrastructures-and-synergies-to-help-tackle-local-and-global-challenges-1293/ In the second position, we underline that boosting synergies has to be a system-wide endeavour, which should be pursued concomitantly with ensuring balance between (i) competitive and non-competitive funding streams on the one hand, and (ii) investigator-driven frontier research and other approaches on the other. We advise to: Boost synergies today by bolstering ongoing efforts; Shape the EU missions as synergy boosters; Put synergies at the heart of the design of the new EU funding programmes. Rik Van de Walle (President) said: “The twin green and digital transitions can only be achieved through a comprehensive and cross-cutting approach across disciplines, sectors and communities. “For example, the ambitious European Green Deal cannot be achieved with what is available today, but is contingent on continued developments in science and technology. “We stand ready to do our part, but to really take this to the next level, synergies must be put at the heart when designing the next generation of funding programmes.” Please reference our synergies position using https://doi.org/10.5281/zenodo.7193145
Integration of atom interferometers and inertial measurement units to improve navigation performance
Creators: name: Tennstedt, Benjamin
name: Schön, Steffen
Publisher: name: Piscataway, NJ : IEEE
Year: 2021
Subjects: subject: Inertial navigation
subject: Cold atom interferometry
subject: Hybridization
subject: Extended Kalman Filter
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: This paper explores a way of combining conventional inertial sensors with cold atom interferometers (CAI) in order to reduce the drift of the navigation solutions in velocity and orientation. Instead of complementing and improving the CAI with conventional sensors, in this approach the conventional IMU will be used as main sensor for a prediction of the kinematic state. The CAI is then used for the correction of systematic errors and offsets in the framework of an extended Kalman Filter. Monte Carlo simulation studies demonstrate an improvement of the navigation solution precision. In addition, most drifts of velocity and orientation can be eliminated and the uncertainty of the velocity solution can further be reduced by a factor of 30 or more compared to the conventional strapdown. The observability of the error states is discussed.
Detecting initial system-environment correlations: Performance of various distance measures for quantum states
Creators: name: Wissmann, S.
name: Leggio, B.
name: Breuer, H. -P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the time evolution of four distance measures in the presence of initial systemenvironment correlations. It is well-known that the trace distance between two quantum states of an open system may increase due to initial correlations which leads to a breakdown of the contractivity of the reduced dynamics. Here we compare and analyze, for two different models, the time evolution of the trace distance, the Bures metric, the Hellinger distance and the Jensen-Shannon divergence regarding an increase above their initial values, witnessing initial correlations. This work generalizes, deepens and corrects the study performed by Dajka et al. [Phys. Rev. A 84 032120 (2011)] and thereby reveals generic features of the considered distance measures with respect to the capability of detecting initial system-environment correlations.
description: 9 pages, 5 figures