cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Crack propagation in rubber blends : impact of blend morphology and energy dissipation mechanisms around the crack tip
Creators: name: Wunde, Matthias
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: crack growth
subject: tearing energy
subject: polymer blend
subject: viscoelasticity
subject: Risswachstum
subject: Weiterreißenergie
subject: Polymerblend
subject: Viskoelastizität
subject: J-Integral
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: This works deals with crack growth investigations of tire tread compounds in laboratory. These measurements are usually performed with the Tear Fatigue Analyzer. In the Tear Fatigue Analyzer notched strip samples are loaded dynamically and the resulting crack growth rate dc/dn is measured. This way the crack growth rate dc/dn in dependence of tearing energy T can be determined for a compound under specific loading condition. The tearing energy T describes the energy available for crack growth and can be calculated for different sample geometries. This energy depends particularly on the stored energy density that is caused by straining the sample. Thereby the crack growth rate depends on the used rubbers. Natural rubber, partially crystallizing under strain, shows clearly lower crack growth than the synthetic butadiene and styrene-butadiene rubbers. Using active fillers like carbon black leads to strongly decreased crack growth due to the multiple interactions between filler and polymer matrix. The crack growth in a polymer blend depends also on the morphology of the distinct polymer phases and the magnitude of the interphase. Also the filler distribution into the different polymer phases and the interphase is influencing the crack growth properties. The dynamic mechanical method used to determine the filler distribution is based on the increase of loss modulus due to the filler but the results are influenced by crystallization of the butadiene rubber. The theoretic description of tearing energy in dependence of crack velocity was developed for steady tearing at constant crack velocity. It can be demonstrated that these concepts can be transferred to the dynamic crack growth of unfilled rubber, partially also to the dynamic crack growth of filled rubber. When applying the tearing energy on elastomers it should be noticed that only a small fraction of this energy is reaching the process zone at the crack tip. The decrease of tearing energy towards the crack tip can be determined by the J-Integral. It turns out that the J-Integral decreases from its plateau value at large integration radii towards very small values for small integration radii. This decrease corresponds to the energy that is lost due to viscoelastic dissipation outside the crack tip and which is not available for crack growth.
Bivariate gamma-geometric law and its induced Lévy process
Creators: name: Barreto-Souza, Wagner
Publisher: name: arXiv
Year: 2013
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In this article we introduce a three-parameter extension of the bivariate exponential-geometric (BEG) law (Kozubowski and Panorska, 2005). We refer to this new distribution as bivariate gamma-geometric (BGG) law. A bivariate random vector $(X,N)$ follows BGG law if $N$ has geometric distribution and $X$ may be represented (in law) as a sum of $N$ independent and identically distributed gamma variables, where these variables are independent of $N$. Statistical properties such as moment generation and characteristic functions, moments and variance-covariance matrix are provided. The marginal and conditional laws are also studied. We show that BBG distribution is infinitely divisible, just as BEG model is. Further, we provide alternative representations for the BGG distribution and show that it enjoys a geometric stability property. Maximum likelihood estimation and inference are discussed and a reparametrization is proposed in order to obtain orthogonality of the parameters. We present an application to the real data set where our model provides a better fit than BEG model. Our bivariate distribution induces a bivariate Lévy process with correlated gamma and negative binomial processes, which extends the bivariate Lévy motion proposed by Kozubowski et al. (2008). The marginals of our Lévy motion are mixture of gamma and negative binomial processes and we named it ${BMixGNB}$ motion. Basic properties such as stochastic self-similarity and covariance matrix of the process are presented. The bivariate distribution at fixed time of our ${BMixGNB}$ process is also studied and some results are derived, including a discussion about maximum likelihood estimation and inference.
description: 22 pages, 9 figures
Entwicklung von Nanopartikeln für Targeted Drug Delivery Systeme
Creators: name: Witt, Sandra
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Nanopartikel
subject: Aptamer
subject: Polycaprolacton
subject: Targeted Drug Delivery
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Krebs gehört zu den weltweit häufigsten Todesursachen. Die Chemotherapie ist oft mit Nebenwirkungen aufgrund der unspezifischen Verteilung der Wirkstoffe auch in gesundem Gewebe verbunden, die durch den Einsatz von Drug Delivery Systemen (DDS) verringert werden kann. In diesen Systemen werden Wirkstoffe beispielsweise in Nanopartikel eingekapselt. Diese Partikel gelangen aufgrund ihrer Größe nicht in gesundes Gewebe, in Tumoren ist die Gefäßstruktur jedoch unregelmäßig und weist große Lücken auf. Daher können die Nanopartikel in das Tumorgewebe eindringen, dort die eingekapselten Wirkstoffe freisetzen und auf diese Weise die Wirkstoffkonzentration lokal erhöhen (Enhanced Permeability and Retention (EPR)-Effekt). Dabei ist besonders die Größe der Nanopartikel entscheidend, diese sollte für eine effektive Therapie zwischen 20 und 100 nm liegen. Um die Spezifität des Drug Delivery Systems zu erhöhen, können zusätzlich Liganden an die Nanopartikel angebracht werden, die eine selektive Bindung der Nanopartikel an die Zielzellen ermöglichen. Auf diese Weise kann auch eine Aufnahme der Nanopartikel in die Zellen gefördert werden, gleichzeitig wird ein unspezifischer Transport der Nanopartikel aus dem Tumorgewebe heraus verringert. In dieser Arbeit wurde die Herstellung von Nanopartikeln aus dem biodegradierbaren Polymer Polycaprolacton (PCL) optimiert. Mittels Nanopräzipitation konnten im Batch-Verfahren reproduzierbar sphärische Nanopartikel im gewünschten Größenbereich hergestellt werden (64 ± 19 nm). Nach der Optimierung der Nanopartikel-Synthese, wurde ein Modell-Drug Delivery System aufgebaut, in dem Paclitaxel (PTX) als Modell-Wirkstoff in die Nanopartikel eingekapselt wurde. Um ein Targeted Drug Delivery System (TDDS) aufzubauen, wurden die Nanopartikel zusätzlich mit einem Aptamer als Affinitätsligand funktionalisiert. In in vitro Studien wurde gezeigt, dass die entwickelten Nanopartikel ohne PTX keine Zytotoxizität aufweisen. Für PTX-haltige Nanopartikel wurden bisher keine eindeutigen Effekte erzielt, was auf die schnelle PTX-Freisetzung zurückzuführen ist, die in Untersuchungen der Lagerstabilität und der Freisetzung des Wirkstoffs unter simulierten physiologischen Bedingungen ermittelt wurde.
Self-dual Continuous Series of Representations for U_q(sl(2)) and U_q(osp(1|2))
Creators: name: Hadasz, Leszek
name: Pawelkiewicz, Michal
name: Schomerus, Volker
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We determine the Clebsch-Gordan and Racah-Wigner coefficients for continuous series of representations of the quantum deformed algebras U_q(sl(2)) and U_q(osp(1|2)). While our results for the former algebra reproduce formulas by Ponsot and Teschner, the expressions for the orthosymplectic algebra are new. Up to some normalization factors, the associated Racah-Wigner coefficients are shown to agree with the fusing matrix in the Neveu-Schwarz sector of N=1 supersymmetric Liouville field theory.
description: 36 pages
Atmospheric Parameters of 169 F, G, K and M-type Stars in the Kepler Field
Creators: name: Molenda-Zakowicz, J.
name: Sousa, S. G.
name: Frasca, A.
name: Uytterhoeven, K.
name: Briquet, M.
name: Van Winckel, H.
name: Drobek, D.
name: Niemczura, E.
name: Lampens, P.
name: Lykke, J.
name: Bloemen, S.
name: Gameiro, J. F.
name: Jean, C.
name: Volpi, D.
name: Gorlova, N.
name: Mortier, A.
name: Tsantaki, M.
name: Raskin, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The asteroseismic and planetary studies, like all research related to stars, need precise and accurate stellar atmospheric parameters as input. We aim at deriving the effective temperature (Teff), the surface gravity (log g), the metallicity ([Fe/H]), the projected rotational velocity (v sin i) and the MK type for 169 F, G, K, and M-type Kepler targets which were observed spectroscopically from the ground with five different instruments. We use two different spectroscopic methods to analyse 189 high-resolution, high-signal-to-noise spectra acquired for the 169 stars. For 67 stars, the spectroscopic atmospheric parameters are derived for the first time. KIC 9693187 and 11179629 are discovered to be double-lined spectroscopic binary systems. The results obtained for those stars for which independent determinations of the atmospheric parameters are available in the literature are used for a comparative analysis. As a result, we show that for solar-type stars the accuracy of present determinations of atmospheric parameters is +/- 150 K in Teff, +/- 0.15 dex in [Fe/H], and +/-? 0.3 dex in log g. Finally, we confirm that the curve-of-growth analysis and the method of spectral synthesis yield systematically different atmospheric parameters when they are applied to stars hotter than 6,000 K.
description: 15 pages, 6 figures, 1 on-line table. Accepted for MNRAS
Follow-up photometry of TrES-3
Creators: name: Vanko, M.
name: Maciejewski, G.
name: Jakubik, M.
name: Krejcova, T.
name: Budaj, J.
name: Pribulla, T.
name: Ohlert, J.
name: Raetz, St.
name: Parimucha, S.
name: Bukowiecki, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present new observations of the transiting system TrES-3 obtained from 2009 to 2011 at several observatories. The orbital parameters of the system were re- determined and a new linear ephemeris was calculated. The best quality light curve was used for light curve analysis, an other datasets were used to determine mid-transit times, Tc, and study transit time variation (TTV). For planet parameter determination we used two independent codes and finally, we concluded that our parameters are in agreement with previous studies. Based on our observations, we determined 14 mid-transit times. Together with published Tc we found that the timing residuals showed no significant deviation from the linear ephemeris. We concluded that a periodic TTV signal with an amplitude greater than 1 minute over a 4-year time span seems to be unlikely. Our analysis of an upper mass limit allows us to exclude an additional Earth-mass planet close to inner 3:1, 2:1, and 5:3 and outer 3:5, 1:2, and 1:3 mean-motion resonances. Using the long-term integration and applying the method of maximum eccentricity, the region from 0.015 au to 0.05 au was found unstable and the region beyond the 0.05 au was found to have a chaotic behaviour and its depletion increases with increasing values of the initial eccentricity as well as inclination.
description: Accepted to MNRAS
EFFECT OF INTERNAL MARKETING ON CUSTOMER SERVICE QUALITY IN COMMERCIAL BANK OF ETHIOPIA EAST ADDIS ABABA DISTRICT
Creators: name: ELSABETH TOLESSA
Publisher: name: Zenodo
Year: 2017

description: This project investigates the situation of customer-employee interaction during service encounters, and to see whether there is a plausible relationship between IM programs of the firm which aims at enabling employees by applying marketing like tools that the firm normally used for the external market and customers perceived service quality which is the outcome of customers’ evaluation of the service quality which could be the basis for their future patronage decision. Even though the growing importance of people in service sectors are supported in main literatures there are still problems where traditional approaches of managing business that dully focus on external customers’ satisfaction is still a believes of many firms. The study targets 130 samples of customers based on their convenience and easiness to discern their perception of service quality they receive from the bank and select 189 front-line employees randomly from different branches to obtain there evaluation of the bank’s IM practice
Valerianella locusta
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. Locusta (L.) Betcke (V. olitoria [L.] Pollich) Cat. 181. Bis 1400 m: Chiboz ob Fully (Garns). Var. lasiocarpa (Rchb.) - 2: Geronde bei Siders (Exk. Soc. Bot. Geneve1916).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Constraining the parameter space of the one-zone synchrotron-self-Compton model for GeV-TeV detected BL Lac objects
Creators: name: Cerruti, Matteo
name: Boisson, Catherine
name: Zech, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The one-zone synchrotron-self-Compton (SSC) model aims to describe the spectral energy distribution (SED) of BL Lac objects via synchrotron emission by a non-thermal population of electrons and positrons in a single homogeneous emission region, partially upscattered to gamma-rays by the particles themselves. The model is usually considered as degenerate, given that the number of free parameters is higher than the number of observables. It is thus common to model the SED by choosing a single set of values for the SSC-model parameters that provide a good description of the data, without studying the entire parameter space. We present here a new numerical algorithm which permits us to find the complete set of solutions, using the information coming from the detection in the GeV and TeV energy bands. The algorithm is composed of three separate steps: we first prepare a grid of simulated SEDs and extract from each SED the values of the observables; we then parametrize each observable as a function of the SSC parameters; we finally solve the system for a given set of observables. We iteratively solve the system to take into account uncertainties in the values of the observables, producing a family of solutions. We present a first application of our algorithm to the typical high-frequency-peaked BL Lac object 1RXS J101015.9-311909, provide constraints on the SSC parameters, and discuss the result in terms of our understanding of the blazar emitting region.
description: 12 pages, 5 figures; Accepted for publication in A&A
Hidden Champions as a central element for the stabilization of rural areas in times of digitalization
Creators: name: Rietmann, Carsten Philipp
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Corporate Local and Regional Responsibility
subject: Digitalization
subject: Innovation
subject: Hidden Champions
subject: Regional Innovation Systems
subject: Rural Areas
subject: Digitalisierung
subject: Regionale Innovationssysteme
subject: Ländliche Räume
subject: Lokale und regionale Verantwortung von Unternehmen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: The nexus of digitalization and rural regions is being examined in this dissertation. It is using the firm type of Hidden Champions (HCs) as a case study for this connection. HCs are little-known small- and medium-sized global or continental market leaders. Due to their long-lasting business success, they have been framed as an integral factor and as representative of the prosperity and resilience of the German Mittelstand. Featuring a high innovative capacity, HCs have disproportionately high export ratios and extensive international sales networks. Rural areas are the central spatial context of this dissertation: They host the majority of HCs in Germany and face resource constraints concerning digitalization. The overarching research question of this dissertation is as follows: How do Hidden Champions in rural Germany deal with digitalization, and what is their role in their home region and its digitalization? Employing a qualitative research approach to examine these questions, 57 semi-structured interviews with HCs and regional actors from four German regions are analyzed. First, I find that rural HCs differ in their potential and risk assessment, and resource availability regarding digitalization. As a consequence, four novel types of HCs are identified: Digital Hidden Champions, Hidden Champions of Digitalization, Traditional Hidden Champions, and Digitalization-Skeptical Hidden Champions. Second, integration of HCs in regional innovation systems is influenced by several factors, including ownership structure, firm size, organizational status, location economies, and urbanization economies. Third, I show that HCs strategically use measures of corporate local and regional responsibility and exert place leadership to develop digitalization-related assets in their rural regions. Motives for these actions are grounded in a perceived lack of swiftness and capacity of public actors, but also entail emotional attachment to the region, particularly for family businesses.
Killing Vector Fields and Superharmonic Field Theories
Creators: name: Groeger, Josua
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The harmonic action functional allows a natural generalisation to semi-Riemannian supergeometry, referred to as superharmonic action, which resembles the supersymmetric sigma models studied in high energy physics. We show that Killing vector fields are infinitesimal supersymmetries of the superharmonic action and prove three different Noether theorems in this context. En passant, we provide a homogeneous treatment of five characterisations of Killing vector fields on semi-Riemannian supermanifolds, thus filling a gap in the literature.
description: 21 pages
Radioanalytical Investigations of Water Samples from the Vicinity of the Nuclear Power Plants "Chernobyl" and "Fukushima Daiichi"
Creators: name: Querfeld, Rebecca
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Radioecology
subject: Chernobyl
subject: Fukushima Daiichi
subject: Olympic Games Tokyo 2020
subject: Radioökologie
subject: Tschernobyl
subject: Olympische Spiele Tokio 2020
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this work, the fission products 90Sr, 129I, and 137Cs and reactor nuclides 3H, and 134Cs were analyzed in the compartment water from the immediate vicinity of the Chernobyl and Fukushima NPPs, and the methods were adapted for these measurements. Both, radioanalytical and mass spectrometrical methods were used, such as liquid scintillation counting, gamma spectrometry via high-purity germanium detector, and accelerator mass spectrometry. The optimized methods were subsequently applied to natural water samples from the Chernobyl exclusion zone with large sample volumes. Further adaptations were made for small sample volumes of Fukushima surface water samples, which were sampled only a month after the accident. Finally, both drinking water as well as a variety of surface water samples from sites of the Tokyo 2020 Olympic Games were tested for their radionuclide content to assess potential risks to athletes and visitors.
A rank 2 theory for constrained Willmore tori in the 3-dimensional sphere
Creators: name: Heydel, Max Christian
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Constrained Willmore torus
subject: Integrable system
subject: Sym-Bobenko formula
subject: Quaternionic surface theory
subject: Constrained Willmore Torus,
subject: Sym-Bobenko Formel
subject: Integrables System
subject: Quaternionische Flächentheorie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: The main subject of this thesis are constrained Willmore tori in the 3-dimensional sphere S^3. It is known that constrained Willmore tori in the 4-sphere come with an associated C_∗-family of flat SL(4,C)-connections. This allows to study constrained Willmore tori as an integrable system. The initial surface can be reconstructed by holomorphic data on the spectralcurve Σ, which is the riemann surface on which the eigenlines of the family of connections are well-defined. If the constrained Willmore torus lies in a 3-dimensional sphere, there is a further symmetry on the spectral curve, a holomorphic involution σ. In this thesis we show that this involution allows to reduce the family of SL(4,C)-connections into a family of SL(2,C)-connections. We achieve this by pushing forward the eigenline bundle of the rank 4 family on the quotient surface Σ/σ. Therefore,the rank 2 family of connections is a Σ/σ-family of connections, which is a hyperelliptic surface. The rank 2 family of connections then allows to give a Sym-Bobenko formula, similiar to the case of constant mean curvature surfaces in S^3. Further, if the quotient surface Σ/σ=CP1, the surface is of constant mean curvature in a space form.
Quarkonium formation time in quark-gluon plasma
Creators: name: Song, Taesoo
name: Ko, Che Ming
name: Lee, Su Houng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The quarkonium formation time in a quark-gluon plasma (QGP) is determined from the space-time correlator of heavy quark vector currents using the quarkonium in-medium mass and wave function obtained from heavy quark potentials extracted from the lattice QCD. It is found that the formation time of a quarkonium increases with the temperature of the QGP and diverges near its dissociation temperature. Also, the quarkonium formation time is longer if the heavy quark potential is taken to be the free energy from lattice calculations for a heavy quark pair, compared to that based on the more negative internal energy.
description: 5 pages, 4 figures
Mit der Regierungskonzeption von Michel Foucault zu einer kritischen Perspektive auf die transdisziplinären Nachhaltigkeitswissenschaften
Creators: name: Habigt, Lisa
Publisher: name: Medien- und Informationszentrum, Leuphana Universität Lüneburg
Year: 2019
Subjects: subject: Foucault, Michel
subject: Transdisziplinarität
subject: Nachhaltigkeit
classificationCode: 000
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke

description: In der transdisziplinären Nachhaltigkeitsforschung sollen mit partizipativen Forschungsansätzen Lösungen für einen gesellschaftlichen Wandel hin zur Nachhaltigkeit generiert werden. Allerdings fehlen bisher Begründungen und Belege für die Erwartungen, die mit der Partizipation verbunden werden, und auch die mangelnden gesellschaftlichen Veränderungen durch die transdisziplinäre Nachhaltigkeitsforschung wurden kritisiert. Gleichzeitig legen Forschungen aus dem Feld der governmentality studies nahe, dass partizipative Prozesse auch ein gewisses Risiko bergen, Herrschaftszustände aufrechtzuerhalten. Um einen Wandel hin zur Nachhaltigkeit zu befördern, sollen in dieser Arbeit daher mit der Regierungskonzeption von Michel Foucault die Ausgestaltung der Partizipation in der transdisziplinären Nachhaltigkeitsforschung untersucht werden und insbesondere inwieweit diese stabilisierend für die gesellschaftlichen Verhältnisse wirken kann. Dementsprechend wird die transdisziplinäre Nachhaltigkeitsforschung auf Übereinstimmungen und Unterschiede zur neoliberalen Gouvernementalität untersucht und die Implikationen des Ergebnisses vor dem Hintergrund eines an den Brundtland Berichts angelehnten Nachhaltigkeitsverständnisses diskutiert. Die Untersuchung zeigt starke Parallelen zwischen der transdisziplinären Nachhaltigkeitsforschung und einer neoliberalen Regierungsweise. Auch wenn diese Regierungsweise durchaus Vorteile mit sich bringt, gibt es doch Anzeichen, dass sie, und damit auch die transdisziplinäre Nachhaltigkeitsforschung, dazu neigt, soziale Ungleichheit zu verstärken und strukturelle Gründe für Armut und die Zerstörung der natürlichen Lebensgrundlage zu vernachlässigen. Dies würde den Hauptmotiven des Nachhaltigkeitsverständnisses entgegenwirken.
Quantitative Combinatorial Nullstellensatz
Creators: name: Schauz, Uwe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 41A05, 13P10, 05E99, 11C08, 11D79, 05C15, 15A15

description: The main result of this paper is a coefficient formula that sharpens and generalizes Alon and Tarsi's Combinatorial Nullstellensatz, which provides some information about the polynomial map $P|_{\X_1\times...\times\X_n}$ when only incomplete information about the polynomial $P(X_1,...c,X_n)$ is given. In a very general working frame, the grid points $x\in\X_1\times\...b\times\X_n$ which do not vanish under an algebraic solution -- a certain describing polynomial $P(X_1,...c,X_n)$ -- correspond to the explicit solutions of a problem. As a consequence of the coefficient formula, we prove that the existence of an algebraic solution is equivalent to the existence of a nontrivial solution to a problem. By a problem, we mean everything that "owns" both, a set $§$, which may be called the \emph{set of solutions}; and a subset $\St\subseteq§$, the \emph{set of trivial solutions}. We give several examples of how to find algebraic solutions, and how to apply our coefficient formula. These examples are mainly from graph theory and combinatorial number theory, but we also prove several versions of Chevalley and Warning's Theorem, including a generalization of Olson's Theorem, as examples and useful corollaries. We obtain a permanent formula by applying our coefficient formula to the matrix polynomial, which is a generalization of the graph polynomial. This formula is an integrative generalization and sharpening of: 1. Ryser's permanent formula. 2. Alon's Permanent Lemma. 3. Alon and Tarsi's Theorem about orientations and colorings of graphs. Furthermore, in combination with the Vigneron-Ellingham-Goddyn property of planar (n)regular graphs, the formula contains as very special cases: 4. Scheim's formula for the number of edge (n)-colorings of such graphs. 5. Ellingham and Goddyn's partial answer to the list coloring conjecture.
description: 35 pages
Interface reconstruction in superconducting CaCuO2/SrTiO3 superlattices: A hard x-ray photoelectron spectroscopy study
Creators: name: Aruta, Carmela
name: Schlueter, Christoph
name: Lee, Tien-Lin
name: Di Castro, Daniele
name: Innocenti, Davide
name: Tebano, Antonello
name: Zegenhagen, Jorg
name: Balestrino, Giuseppe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Here we report about the interface reconstruction in the recently discovered superconducting artificial superlattices based on insulating CaCuO2 and SrTiO3 blocks. Hard x-ray photoelectron spectroscopy shows that the valence bands alignment prevents any electronic reconstruction by direct charge transfer between the two blocks. We demonstrate that the electrostatic built-in potential is suppressed by oxygen redistribution in the alkaline earth interface planes. By using highly oxidizing growth conditions, the oxygen coordination in the reconstructed interfaces may be increased, resulting in the hole doping of the cuprate block and thus in the appearance of superconductivity.
description: 9 pages, 6 figures
Kultivierung von Produktionszelllinien und Entwicklung effizienter Analytik- und Aufreinigungsverfahren für die Zielproteine
Creators: name: Anton, Fabienne
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Hybridom-Zellen
subject: CHO-Zellen
subject: Antikörper
subject: Online-Prozessanalytik
subject: 2D-Fluoreszenzspektroskopie
subject: HPMDC
subject: Antikörperaufreinigung
subject: Membranadsorber. - Hybridoma cells
subject: CHO cells
subject: antibody
subject: online process monitoring
subject: 2D fluorescence spectroscopy
subject: antibody purification
subject: membrane adsorber
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Zur Einführung
Creators: name: Spieß, Karl-Heinz
Publisher: name: Vorträge und Forschungen
Year: 2017

description: Vorträge und Forschungen, Bd. 76 (2013): Vorträge und Forschungen: Ausbildung und Verbreitung des Lehnwesens im Reich und in Italien im 12. und 13. Jahrhundert
Editorial: Statistical Mechanics and Social Sciences
Creators: name: Fortunato, Santo
name: Macy, Michael
name: Redner, Sidney
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This editorial opens the special issues that the Journal of Statistical Physics has dedicated to the growing field of statistical physics modeling of social dynamics. The issues include contributions from physicists and social scientists, with the goal of fostering a better communication between these two communities.
description: 5 pages, 6 references. The contents of the special issue can be found at these links: http://link.springer.com/journal/10955/151/1/page/1 (Volume I) and http://link.springer.com/journal/10955/151/3/page/1 (Volume II). Minor modifications
title: Analysis of the design of LNG storage and regasification systems for cryogenic barges
Creators: name: Ivanov, L.V.
name: Anokhin, A.V.
name: Zaitsev, A.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The text of the work considers the options for the implementation of the cargo storage system - CCS (Cargo containment system). CCS is used on cryogenic barges for storage and regasification of LNG for the needs of autonomous coastal gasification. Tanks (tanks) of type A, various types of tanks of type B, C and membrane tanks are considered. The existing projects of floating LNG storage facilities are analyzed.
title: Digital technologies in the oil and gas industry
Creators: name: Ruleva, A.F.
name: Cherkasova, E.I.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article discusses the use of digital technology in the oil and gas industry and the transition to industry 4.0. Examples include technologies such as the industrial Internet of things, big data technology and digital twin technology.
Messung und Analyse an verkehrstelematischen Systemen am Beispiel Floating Car Data
Creators: name: Lampl, Dieter C.
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Messung und Analyse
subject: Verkehrstelematik
subject: virtuelle Realität
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: [no abstract]
Valerianella carinata Loisel. Cat.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. carinata Loisel. Cat. 181. l: Outre-Rhone (J.). - 2: Daillon (J.); Ausserberg (Hirschmann). - 3: Chez les Reuse bei Orsieres (Melly); Chemin (Closuit); Esch-Zeneggen (Hirschmann).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
The sword-belt of Pallas: Holding a quill for the Critic? Vergil, Aeneid 10,495-500
Creators: name: Stahl, Hans Peter
Publisher: name: Würzburger Jahrbücher für die Altertumswissenschaft
Year: 2017

description: [Nicht vorhanden / Not available]
description: Würzburger Jahrbücher für die Altertumswissenschaft, [N.F.] Bd. 35 (2011): Würzburger Jahrbücher für die Altertumswissenschaft
Two-photon ladder climbing and transition to autoresonance in a chirped oscillator
Creators: name: Barth, Ido
name: Friedland, Lazar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The two-photon ladder climbing (successive two-photon Landau-Zener-type transitions) in a chirped quantum nonlinear oscillator and its classical limit (subharmonic autoresonance) are discussed. An isomorphism between the chirped quantum-mechanical one and two-photon resonances in the system is used in calculating the threshold for the phase-locking transition in both the classical and quantum limits. The theory is tested by solving the Schrodinger equation in the energy basis and illustrated via the Wigner function in phase space.
description: 5 pages, 3 figures, submitted to PRA
Stereochemische Zuordnung und Beiträge zur Totalsynthese von Etnangien sowie Entwicklung von Methoden zu diastereodivergenten Aldolreaktionen und zur reduktiven Aminierung von Carbonalyverbindungen
Creators: name: Arikan, Fatih
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Etnangien
subject: Totalsynthese
subject: Aminierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Immungenetische Charakterisierung der LEW.1AR1-iddm Ratte : ein Tiermodell der insulinpflichtigen Typ 1 Diabetes mellitus
Creators: name: Arndt, Tanja
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Diabetes mellitus
subject: Tiermodelle
subject: LEW.1AR1-iddm Ratte
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Direct growth of graphitic carbon on Si(111)
Creators: name: Trung, Pham Thanh
name: Joucken, Frederic
name: Campos-Delgado, Jessica
name: Raskin, Jean-Pierre
name: Hackens, Benoit
name: Sporken, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Appropriate conditions for direct growth of graphitic films on Si(111) 7$\times$7 are investigated. The structural and electronic properties of the samples are studied by Auger Electron Spectroscopy (AES), X-ray Photoemission Spectroscopy (XPS), Low Energy Electron Diffraction (LEED), Raman spectroscopy and Scanning Tunneling Microscopy (STM). In particular, we present STM images of a carbon honeycomb lattice grown directly on Si(111). Our results demonstrate that the quality of graphene films formed depends not only on the substrate temperature but also on the carbon buffer layer at the interface. This method might be very promising for graphene-based electronics and its integration into the silicon technology.
description: Accepted in APL
Simulation homogener Diesel-Brennverfahren
Creators: name: Bauer, Clemens
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Homogene Verbrennung
subject: Cool-Flame
subject: CFD
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Gellius als Quelle bekannter und unbekannter Autoren - Zur Funktion der Tauros-Figur in der Darstellung der Lehre Platons in den Noctes Atticae
Creators: name: Engert, Mirjam
Publisher: name: Würzburger Jahrbücher für die Altertumswissenschaft
Year: 2017

description: [Nicht vorhanden / Not available]
description: Würzburger Jahrbücher für die Altertumswissenschaft, [N.F.] Bd. 35 (2011): Würzburger Jahrbücher für die Altertumswissenschaft
Totalsynthese des Harderoporphyrin-Trimethylesters als Intermediat der Coprogen III Oxidase und Synthese des C1-C17 Fragments von Angiolam A
Creators: name: Noll, Claudia
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: total synthesis
subject: coproporphyrinogen III oxidase
subject: natural products
subject: Totalsynthese
subject: Coprogen III Oxidase
subject: HemN
subject: Angiolam A
subject: Naturstoffe
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Pulsed Mid-infrared Radiation from Spectral Broadening in Laser Wakefield Simulations
Creators: name: Zhu, W.
name: Palastro, J. P.
name: Antonsen, T. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Spectral red-shifting of high power laser pulses propagating through underdense plasma can be a source of ultrashort mid-infrared (MIR) radiation. During propagation, a high power laser pulse drives large amplitude plasma waves, depleting the pulse energy. At the same time, the large amplitude plasma wave provides a dynamic dielectric response that leads to spectral shifting. The loss of laser pulse energy and the approximate conservation of laser pulse action imply that spectral red-shifts accompany the depletion. In this paper, we investigate, through simulation, the parametric dependence of MIR generation on pulse energy, initial pulse duration, and plasma density.
Wilson line approach to gravity in the high energy limit
Creators: name: Melville, S.
name: Naculich, S. G.
name: Schnitzer, H. J.
name: White, C. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the high energy (Regge) limit of gravitational scattering using a Wilson line approach previously used in the context of non-Abelian gauge theories. Our aim is to clarify the nature of the Reggeization of the graviton and the interplay between this Reggeization and the so-called eikonal phase which determines the spectrum of gravitational bound states. Furthermore, we discuss finite corrections to this picture. Our results are of relevance to various supergravity theories, and also help to clarify the relationship between gauge and gravity theories.
description: 33 pages, 5 figures
Temperature controlled Lévy flights of minority carriers in photoexcited bulk n-InP
Creators: name: Subashiev, Arsen V.
name: Semyonov, Oleg
name: Chen, Zhichao
name: Luryi, Serge
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the spatial distribution of minority carriers arising from their anomalous photon-assisted diffusion upon photo-excitation at an edge of n-InP slab for temperatures ranging from 300 K to 78 K. The experiment provides a realization of the "Lévy flight" random walk of holes, in which the Lévy distribution index gamma is controlled by the temperature. We show that the variation γ(T) is close to that predicted earlier on the basis of the assumed quasi-equilibrium (van Roosbroek-Shockley) intrinsic emission spectrum, γ=1-Δ/kT, where Δ(T) is the Urbach tailing parameter of the absorption spectra. The decreasing γat lower temperatures results in a giant enhancement in the spread of holes -- over distances exceeding 1 cm from the region of photo-excitation.
description: 4 pages, 3 figures
Alkinylferrocene als Bausteine molekularer Drähte
Creators: name: Baumgardt, Ingmar
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Ferrocenderivate
subject: molekulare Drähte
subject: NEGISHI-Kupplung
subject: SONOGASHIRA-Kupplung
subject: Cyclopentadienyl(cyclobutadien)cobalt
subject: Cyclovoltammetrie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Demonstration of mid-infrared waveguide photonic crystal cavities
Creators: name: Lin, Hongtao
name: Li, Lan
name: Deng, Fei
name: Ni, Chaoying
name: Danto, Sylvain
name: Musgraves, J. David
name: Richardson, Kathleen
name: Hu, Juejun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have demonstrated what we believe to be the first waveguide photonic crystal cavity operating in the mid-infrared. The devices were fabricated from Ge23Sb7S70 chalcogenide glass on CaF2 substrates by combing photolithographic patterning and focus ion beam milling. The waveguide-coupled cavities were characterized using a fiber end fire coupling method at 5.2 μm wavelength, and a loaded quality factor of ~ 2,000 was measured near the critical coupling regime.
description: 4 pages, 5 figures
Tunneling-induced high efficiency four-wave mixing in an asymmetric quantum wells
Creators: name: Sun, Hui
name: Fan, Shuangli
name: Zhang, Hongjun
name: Gong, Shangqing
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An asymmetric double quantum wells (QWs) structure with resonant tunneling is suggested to achieve high efficient four wave mixing (FWM). We analytically demonstrate that the resonant tunneling can induce high efficient mixing wave in such a semiconductor structure with a low light pump wave. In particular, the FWM conversion efficiency can be enhanced dramatically in the vicinity of the center frequency. This interesting scheme may be used to generate coherent long-wavelength radiation in solid-state system.
description: 6 pages, 4 figures
Entropy at the Outskirts of Galaxy Clusters as Implications for Cosmological Cosmic-Ray Acceleration
Creators: name: Fujita, Yutaka
name: Ohira, Yutaka
name: Yamazaki, Ryo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recently, gas entropy at the outskirts of galaxy clusters attracts much attention. We propose that the entropy profiles could be used to study cosmic-ray (CR) acceleration around the clusters. If the CRs are effectively accelerated at the formation of clusters, the kinetic energy of infalling gas is consumed by the acceleration and the gas entropy should decrease. As a result, the entropy profiles become flat at the outskirts. If the acceleration is not efficient, the entropy should continue to increase outwards. By comparing model predictions with X-ray observations with Suzaku, which show flat entropy profiles, we find that the CRs have carried ~<7% of the kinetic energy of the gas away from the clusters. Moreover, the CR pressure at the outskirts can be ~<40% of the total pressure. On the other hand, if the entropy profiles are not flat at the outskirts as indicated by combined Plank and ROSAT observations, the carried energy and the CR pressure should be much smaller than the above estimations.
description: Accepted for publication in ApJ Letters - typos corrected, references updated
The investigations of anisotropy in orientations of galaxies
Creators: name: Godlowski, Wlodzimierz
name: Panko, Elena
name: Pajowska, Paulina
name: Flin, Piotr
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In 1994 Parnovsky, Karachentsev and Karachentseva suggested a modified method for investigation of the orientations of galaxies. Using this method they analyzed galaxies from the UGC and ESO catalogues, as well as from their's own catalogue inclusive of flat, edge-on galaxies. They found statistically significant anisotropy in the galaxies orientations'. In 1995 Flin suggested that this anisotropy has to be specific to LOcal Supercluster (LSC) In the present paper, using the method proposed by Parnovsky, Karachentsev and Karachentseva in 1994, we analyzed orientation of galaxies in the sample of galaxies belonging to LSC founding only a weak anisotropy. The relation of this method to Hawley and Peebles (1975) method of the investigation of the orientation of galaxies was discussed as well.
description: Presented at The Sixth Scientific Conference "Selected Issues of Astronomy and Astrophysics" in honor of Bohdan Babiy 4-6 October 2011 Lviv, JPS 2012, 16, No3 accepted
Synthese von [alpha]-2,8-Polysialinsäure-Matrizen zur Herstellung von Implantatmaterialien für das Tissue Engineering
Creators: name: Berski, Silke
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Polysialinsäure
subject: Hydrogel
subject: Biomaterial
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Valerianella rimosa Bastard
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. rimosa Bastard (V. Auricula DC.) Cat. 181. Keine neuen Fundorte bekanntgeworden.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Epidemic fronts in complex networks with metapopulation structure
Creators: name: Hindes, Jason
name: Singh, Sarabjeet
name: Myers, Christopher R.
name: Schneider, David J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Infection dynamics have been studied extensively on complex networks, yielding insight into the effects of heterogeneity in contact patterns on disease spread. Somewhat separately, metapopulations have provided a paradigm for modeling systems with spatially extended and "patchy" organization. In this paper we expand on the use of multitype networks for combining these paradigms, such that simple contagion models can include complexity in the agent interactions and multiscale structure. We first present a generalization of the Volz-Miller mean-field approximation for Susceptible-Infected-Recovered (SIR) dynamics on multitype networks. We then use this technique to study the special case of epidemic fronts propagating on a one-dimensional lattice of interconnected networks - representing a simple chain of coupled population centers - as a necessary first step in understanding how macro-scale disease spread depends on micro-scale topology. Using the formalism of front propagation into unstable states, we derive the effective transport coefficients of the linear spreading: asymptotic speed, characteristic wavelength, and diffusion coefficient for the leading edge of the pulled fronts, and analyze their dependence on the underlying graph structure. We also derive the epidemic threshold for the system and study the front profile for various network configurations. To our knowledge, this is the first such application of front propagation concepts to random network models.
description: 9 pages, 5 figures, updated references