cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
B-Spline based uncertainty quantification for stochastic analysis
Creators: name: Eckert, Christoph
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Uncertainty Quantification
subject: Spline Chaos
subject: Stochastic Galerkin Isogeometric Analysis
subject: Unsicherheitsquantifizierung
subject: Stochastik Galerkin isogeometrische Analysis
subject: Dewey Decimal Classification::600 | Technik

description: The consideration of uncertainties has become inevitable in state-of-the-art science and technology. Research in the field of uncertainty quantification has gained much importance in the last decades. The main focus of scientists is the identification of uncertain sources, the determination and hierarchization of uncertainties, and the investigation of their influences on system responses. Polynomial chaos expansion, among others, is suitable for this purpose, and has asserted itself as a versatile and powerful tool in various applications. In the last years, its combination with any kind of dimension reduction methods has been intensively pursued, providing support for the processing of high-dimensional input variables up to now. Indeed, this is also referred to as the curse of dimensionality and its abolishment would be considered as a milestone in uncertainty quantification. At this point, the present thesis starts and investigates spline spaces, as a natural extension of polynomials, in the field of uncertainty quantification. The newly developed method 'spline chaos', aims to employ the more complex, but thereby more flexible, structure of splines to counter harder real-world applications where polynomial chaos fails. Ordinarily, the bases of polynomial chaos expansions are orthogonal polynomials, which are replaced by B-spline basis functions in this work. Convergence of the new method is proved and emphasized by numerical examples, which are extended to an accuracy analysis with multi-dimensional input. Moreover, by solving several stochastic differential equations, it is shown that the spline chaos is a generalization of multi-element Legendre chaos and superior to it. Finally, the spline chaos accounts for solving partial differential equations and results in a stochastic Galerkin isogeometric analysis that contributes to the efficient uncertainty quantification of elliptic partial differential equations. A general framework in combination with an a priori error estimation of the expected solution is provided.
Propagation in an intense background
Creators: name: Lavelle, Martin
name: McMullan, David
name: Raddadi, Merfat
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The canonical quantisation of a charged particle in an intense laser background is developed and the associated two-point function calculated. It is shown how the causal propagator can be extracted. We provide an interpretation of this propagator in terms of degenerate quantum processes. The spectral properties of the propagator are derived and we show how multi-pole structures emerge as a perturbative feature. We also calculate the associated multiple wave-function renormalisations to all orders in perturbation theory. Our calculations are for both circular and linearly polarised plane wave laser backgrounds.
description: 26 pages, 8 figures
Analytic theory of optical nano-plasmonic metamaterials
Creators: name: Demetriadou, Angela
name: Hess, Ortwin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent advances in nano-fabrication techniques allow for the manufacture of optical metamaterials, bringing their unique and extra-ordinary properties to the visible regime and beyond. However, an analytical description of optical nano-plasmonic metamaterials is challenging due to the characteristic optical behaviour of metals. Here we present an analytical theory that allows to bring established microwave metamaterials models to optical wavelengths. This method is implemented for nano-scaled plasmonic wire-mesh and tri-helical metamaterials, and we obtain an accurate prediction for their dispersive behaviour at optical and near-IR wavelengths.
title: A new votive altar with sacrificial scene dedicated the matronae from Mechernich (Kr. Euskirchen)
Creators: name: Derks, Ton
Publisher: name: University Library Heidelberg
Year: 2016

description: In diesem Aufsatz wird ein neuer Votivaltar mit Inschrift und Opferszene vorgestellt, der den Matronae geweiht ist. Der Altar wurde angeblich in den späten 1980er Jahren in einem gepflügten Feld in der Nähe von Mechernich (Kr. Euskirchen) gefunden. Seitdem wechselte er seinen Besitzer mehrere Male. Abgesehen von der oberen rechten Ecke, die abgebrochen ist (das Fragment ist aber noch erhalten), ist der Altar fast vollständig erhalten. Er wurde von dem Peregrinen Masius Neganefi (filius) geweiht, der höchstwahrscheinlich als der Mann auf der rechten Seite in der unterhalb der Inschrift dargestellten Weiheszene identifiziert werden kann. Bekleidet mit einer Tunika und einer Paenula ist Masius dabei, Wein an einem Brandalter zu opfern. Die Frau links von ihm trägt die typische Haartracht der verheirateten Frauen der Ubier; obwohl sie in der Inschrift nicht erwähnt wird, kann sie als seine Ehefrau identifiziert werden. Dieser Neufund ist das erste Beispiel eines niederrheinischen Votivaltars mit Opferszene, der von einer Person aus dem einheimischen Milieu geweiht wurde, die (noch) nicht über das Bürgerrecht verfügt. In Anbetracht der lokalen Herkunft des Stifters kann man vermuten, dass das Paar zu einer Familie von Bauern der Mittelschicht gehörte, die in direkter Nähe zum Fundort des Altars Land besaß.
description: In this paper, a new inscribed votive altar with sacrificial scene dedicated to the matronae is presented. The altar was allegedly found in the late 1980s in a ploughed field near Mechernich (Kr. Euskirchen) and has changed owners several times since. Apart from the top right corner, which has broken off but has been preserved, the altar is nearly complete. It was erected by the peregrine dedicator Masius Neganefi (filius), who is most likely to be identified with the man depicted on the right side of the sacrificial scene below. Wearing a tunic and the paenula Masius is about to offer wine on the burning altar. The woman on the left is wearing the typical headdress of the Ubian married woman; even if she has gone unmentioned in the inscription, she may be easily identified as his wife. The new find is the first example of a Lower Rhine votive altar with sacrificial scene that has been dedicated by someone of local origin who had not (yet) been enfranchised. Given the local background of the dedicators, it may be assumed that the couple belonged to a family of middle class farmers who possessed land in the immediate vicinity of the find spot of the altar.
Natural NMSSM confronting with the LHC7-8
Creators: name: Cheng, Taoli
name: Li, Jinmian
name: Li, Tianjun
name: Yan, Qi-Shu
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The natural supersymmetry (SUSY) requires that stop, sbottom, and gluino be around one TeV or lighter. By using the direct SUSY search bounds from both ATLAS and CMS Collaborations, we examine the constraints on the natural SUSY in the Next to Minimal Supersymmetric Standard Model (NMSSM). We consider two cases of interpretations for the Higgs boson data: (1) the Standard Model (SM) like Higgs boson is the lightest CP-even Higgs boson; (2) the SM like Higgs boson is the second lightest CP-even Higgs boson. We find that the direct SUSY searches at the LHC impose a strong constraint on the light gluino scenarios, and in both cases the gluino can not be lighter than 1.1 TeV with sbottom mass up to 600 GeV and stop mass up to 550 GeV.
description: 43 pages, 13 figures
Angular Correlations in Associated Production of Single Top and Higgs with and without anomalous $Wtb$ Couplings
Creators: name: Taghavi, S. F.
name: Najafabadi, M. Mohammadi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the angular correlation and the amount of top quark polarization in the production of a higgs boson in association with a single top quark in the $t-$channel at the LHC. We also study the effect of anomalous $Wtb$ couplings on the angular correlation and on the production cross section of the process. The cross section and angular correlation is almost insensitive to the variation of the Higgs boson mass within 3 GeV. The robustness of the angular correlation against the center-of-mass energy of the proton-proton collision, the variation of parton distribution functions, and the change of factorization scale is investigated. The sensitivity of this process to the anomalous couplings is examined.
description: 12 pages, 9 figures
Potential of a Linear Collider for Lepton Flavour Violation studies in the SUSY seesaw
Creators: name: Figueiredo, A. J. R.
name: Abada, A.
name: Romao, J. C.
name: Teixeira, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the potential of an e+- e- Linear Collider for charged lepton flavour violation studies in a supersymmetric framework where neutrino masses and mixings are explained by a type-I seesaw. Focusing on e-mu flavour transitions, we evaluate the background from standard model and supersymmetric charged currents to the e mu + missing E_T signal. We study the energy dependence of both signal and background, and the effect of beam polarisation in increasing the signal over background significance. Finally, we consider the mu- mu- + missing E_T final state in e- e- collisions that, despite being signal suppressed by requiring two e-mu flavour transitions, is found to be a clear signature of charged lepton flavour violation due to a very reduced standard model background.
description: 8 pages, 5 figures. To appear in the proceedings of "DISCRETE 2012 - 3rd Symposium on Prospects in the Physics of Discrete Symmetries", Lisbon, Portugal, 3-7 December 2012
MPEC 2023-M54 : 2022 JQ1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: A new Palaeolithic assemblage from the Obłazowa Cave in the Polish Western Carpathians
Creators: name: Valde-Nowak, Paweł
name: Cieśla, Magda
Publisher: name: University Library Heidelberg
Year: 2016

description: In der bekannten Obłazowa-Höhle im südlichen Polen konnte bei notwendig gewordenen neuen Grabungen eine bisher unbekannte spätmittelpaläolithische Fundschicht aus einem Horizont (XVIIIb) angetroffen werden, der bislang als steril galt. Dieses neue, wenn auch kleine Inventar findet sich zwischen Industrien, die als Taubachien klassifiziert wurden. Die Untersuchungen legen nahe, dass es sich bei dem neuen Fundensemble um einen bisher in der Obłazowa-Höhle unbekannten Technokomplex handelt, der mit den Keilmessergruppen zu verbinden ist. Zugleich konnte damit für das südliche Verbreitungsgebiet dieses spätmittelpaläolithischen Technokomplexes eine Überlieferungslücke geschlossen werden, wo die Menschen den lokalen Radiolarit nutzten.
description: The new cultural layer of the Obłazowa Cave in southern Poland was considered sterile until the excavation in 2012. The stratum is situated between the layers connected with the Taubachian series. Recent excavations not only revealed evidence for human occupation but also ascertain the existence of a new culture at the site. The unearthed area, although relatively small, has yielded series of stone artefacts. The assemblage of this new layer (XVIIIb) seems to bear some unique technological and stylistic traits, and can be attributed, according to our classification of some of the finds, to the Keilmessergruppen. The presented discovery helps to document the dynamics of Micoquian-Prądnikian groups in the southern zone of their activity, with special attention to the local radiolarites’ exploitation.
Die zwei metabolischen Funktionen der Aconitase AcoA aus Aspergillus nidulans : Aconitase-Aktivität im [4Fe-4S]2+ und Methylisocitrat-Dehydratase-Aktivität im [3Fe-4S]+-Zustand
Creators: name: Maerker, Claudia
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: Aspergillus nidulans
subject: Methylcitratzyklus
subject: Aconitase
subject: Eisen-Schwefel-Cluster
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
The Rotating Outflow, Envelope and Disk in Class-0/I protostar [BHB2007] 11 in the Pipe Nebula
Creators: name: Hara, C.
name: Shimajiri, Y.
name: Tsukagoshi, T.
name: Kurono, Y.
name: Saigo, K.
name: Nakamura, F.
name: Saito, M.
name: Wilner, D.
name: Kawabe, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of observations toward a low-mass Class-0/I protostar, [BHB2007]#11 (afterwards B59#11) at the nearby (d=130 pc) star forming region, Barnard 59 (B59) in the Pipe Nebula with the Atacama Submillimeter Telescope Experiment (ASTE) 10 m telescope (~22" resolution) in CO(3--2), HCO+, H13CO+(4--3), and 1.1 mm dust-continuum emissions. We also show Submillimeter Array (SMA) data in 12CO, 13CO, C18O(2--1), and 1.3 mm dust-continuum emissions with ~5" resolution. From ASTE CO(3--2) observations, we found that B59#11 is blowing a collimated outflow whose axis lies almost on the plane of the sky. The outflow traces well a cavity-like structure seen in the 1.1 mm dust-continuum emission. The results of SMA 13CO and C18O(2--1) observations have revealed that a compact and elongated structure of dense gas is associated with B59#11, which is oriented perpendicular to the outflow axis. There is a compact dust condensation with a size of 350x180 AU seen in the SMA 1.3 mm continuum map, and the direction of its major axis is almost the same as that of the dense gas elongation. The distributions of 13CO and C18O emission also show the velocity gradients along their major axes, which are considered to arise from the envelope/disk rotation. From the detailed analysis of the SMA data, we infer that B59#11 is surrounded by a Keplerian disk with a size of less than 350 AU. In addition, the SMA CO(2--1) image shows a velocity gradient in the outflow along the same direction as that of the dense gas rotation. We suggest that this velocity gradient shows a rotation of the outflow.
description: accepted by ApJ; 51 pages, 12 figures, 8 tables
Stability of the toroidal magnetic field in rotating stars
Creators: name: Bonanno, Alfio
name: Urpin, Vadim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The magnetic field in stellar radiation zones can play an important role in phenomena such as mixing, angular momentum transport, etc. We study the effect of rotation on the stability of a predominantly toroidal magnetic field in the radiation zone. In particular we considered the stability in spherical geometry by means of a linear analysis in the Boussinesq approximation. It is found that the effect of rotation on the stability depends on a magnetic configuration. If the toroidal field increases with the spherical radius, the instability cannot be suppressed entirely even by a very fast rotation. Rotation can only decrease the growth rate of instability. If the field decreases with the radius, the instability has a threshold and can be completey suppressed.
description: 5 pages, 4 figures, to appear on Astronomy and Astrophysics. arXiv admin note: text overlap with arXiv:1110.3340
title: Entropy-based methods to tackle missing information in complex networks
Creators: name: Parisi, Francesca
Publisher: name: IMT Alti Studi Lucca
Year: 2019

description: The work presented in this thesis focuses on an issue that
 very commonly arise when studying a network: missing information. There are many phenomena that can cause such
 a lack of knowledge, but prior to any attempt at studying
 the data, it is desirable to have a knowledge of the network
 at hand that is as complete as possible. Here I will address
 specifically two types of missing information problems, namely
 network reconstruction and link prediction. In the former case,
 the network structure is hidden, the only information we have
 access to is the size of the network and some aggregate nodespecific quantity. In the context of link prediction we face a
 different issue: there is a real underlying network that represents the phenomenon we want to study, of which we can
 only observe an incomplete version where some links are not
 present. Our goal will be to identify the most likely candidates to be the missing links and, for weighted networks,
 their intensity. Both problem will be tackled using entropybased methods, that guarantee the results to be unbiased. The
 thesis presents advancements on three major fronts. It generalizes the formalism for network reconstruction, proposing a flexible methodology that allows to include any prior
 topological knowledge and to derive a compatible, unbiased
 weighted distribution. It proposes a new approach to link
 prediction, whose key idea is to tune reconstruction models
 on the accessible portion of network to infer the partiallyobserved portion, i.e. the most likely missing links. Finally,
 in the case of weighted prediction, unlike the vast majority of
 alternative methods, it provides an explicit recipe to estimate
 the links weights, together with their confidence intervals.
Approximating random quantum optimization problems
Creators: name: Hsu, B.
name: Laumann, C. R.
name: Laeuchli, A.
name: Moessner, R.
name: Sondhi, S. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report a cluster of results regarding the difficulty of finding approximate ground states to typical instances of the quantum satisfiability problem $k$-QSAT on large random graphs. As an approximation strategy, we optimize the solution space over `classical' product states, which in turn introduces a novel autonomous classical optimization problem, PSAT, over a space of continuous degrees of freedom rather than discrete bits. Our central results are: (i) The derivation of a set of bounds and approximations in various limits of the problem, several of which we believe may be amenable to a rigorous treatment. (ii) A demonstration that an approximation based on a greedy algorithm borrowed from the study of frustrated magnetism performs well over a wide range in parameter space, and its performance reflects structure of the solution space of random $k$-QSAT. Simulated annealing exhibits metastability in similar `hard' regions of parameter space. (iii) A generalization of belief propagation algorithms introduced for classical problems to the case of continuous spins. This yields both approximate solutions, as well as insights into the free energy `landscape' of the approximation problem, including a so-called dynamical transition near the satisfiability threshold. Taken together, these results allow us to elucidate the phase diagram of random $k$-QSAT in a two-dimensional energy-density--clause-density space.
description: 14 pages, 9 figures
title: Hot-Wire Anemometer Measurements of Atmospheric Surface Layer Turbulence via Unmanned Aerial Vehicle
Creators: name: Canter, Caleb A.
Publisher: name: University of Kentucky Libraries
Year: 2019

description: An instrumented unmanned aerial vehicle (UAV) was developed and employed to observe the full range of turbulent motions that exist within the inertial subrange of atmospheric surface layer turbulence. The UAV was host to a suite of pressure, temperature, humidity, and wind sensors which provide the necessary data to calculate the variety of turbulent statistics that characterize the flow. Flight experiments were performed with this aircraft, consisting of a large square pattern at an altitude of 100 m above ground level. In order to capture the largest turbulent scales it was necessary to maximize the size of the square pattern. The smallest turbulent scales, on the other hand, were measured through the use of a fast response constant temperature hot wire anemometer. The results demonstrates that the UAV system is capable of directly measuring the full inertial subrange of the atmospheric surface layer with high resolution and allowing for the turbulence dissipation rate to be calculated directly.
description: Copyright © Caleb A. Canter 2019
description: Funding information: Supported by the National Science Foundation through grant #CBET-1351411 and by National Science Foundation award #1539070, Collaboration Leading Operational UAS Development for Meteorology and Atmospheric Physics (CLOUDMAP).
Response to the letter entitled ‘On finding acceptance’
Creators: name: Lim, KHJ
name: Westphalen, CB
name: Mateo, J
name: Lambertini, M
name: Amaral, T
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: classificationCode: Tumour Biology
subject: Tumour Biology
classificationCode: Signalling & Oncogenes
subject: Signalling & Oncogenes
classificationCode: Genetics & Genomics
subject: Genetics & Genomics
classificationCode: Computational & Systems Biology
subject: Computational & Systems Biology
classificationCode: Genome Integrity & Repair
subject: Genome Integrity & Repair

description: No description supplied
title: On the metrology of Birka and early Sigtuna – tools of trade in the Viking Age Lake Mälaren Valley (Sweden)
Creators: name: Schultzén, Joakim M.
Publisher: name: University Library Heidelberg
Year: 2016

description: Dieser Aufsatz befasst sich mit den Gewichten von der Fundstelle Birka, dem wichtigsten Handelszentrum im Gebiet des Mälarensees und -tals zur Wikingerzeit, sowie von ihrem Nachfolger, der mittelalterlichen Stadt Sigtuna. Es wird untersucht, welches Gewichtssystem für den Handel in dieser Region und in dieser Epoche verwendet wurde. Es zeigt sich, dass die Gewichte eine lokale Variante (das Ostsee-System) des zeitgleichen Gewichtssystems des Kalifats darstellen. Weiter behandelt dieser Beitrag die Gründe für die Verwendung dieser Gewichtseinheiten und warum sie noch in Sigtuna gebraucht wurden, nachdem der Handel sich schon in Regionen verlagert hatte, wo andere Gewichte vorgeschrieben waren. Wir schlagen vor, dass der im späten 10. Jahrhundert angestiegene Handel mit Westeuropa hauptsächlich über die westslawischen Gebiete abgewickelt wurde, die zu diesem Zeitpunkt immer noch das Ostsee- Gewichtssystem verwendeten. Außerdem gab der direkte Handel mit den auf Münzwirtschaft basierenden Regionen, wie mit dem Heiligen Römischen Reich und mit England, wenige Anreize für einen Wechsel.
description: This paper analyses weights from the site of Birka, the main centre for trade in the Lake Mälaren Valley during the Viking Age, as well as its successor, the medieval town of Sigtuna, with the purpose of identifying which weight system was employed for trade in the area and period. The results show that the system was a local variant (the Baltic Sea system) of the contemporary weight system of the Caliphate. Further, the paper deals with the reasons for implementing this system and why it remained in use in Sigtuna even after trade had shifted to areas where other weight systems were decreed. We propose that the increased trade with Western Europe in the late 10th century to a large extent was conducted via the Western Slavonic region, which would, at this time, still have employed the Baltic Sea system, and further that direct trade with monetary economies such as the Holy Roman Empire and England would have given little incentive for change.
Synthesis, characterization and dispersion stabilities of novel ionic and nonionic diol modified waterborne polyurethane dispersions with different polyols
Creators: name: Pamir, Ozgur
name: Ocal, Nuket
name: Aydogan, Feray
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Several high solid content waterborne polyurethane dispersions (WPUDs) with the combination of anionic and nonionic stabilization were synthesized by polyaddition reaction using isophorone diisocyanate (IPDI), trimethylol propane (TMP) and 1,6-hexanediol (HDO) as the hard segments, polypropylene glycol with molecular weight of 2000 Da (PPG-2000), and polytetramethylene ether glycol with molecular weight of 2000 Da (PTMG-2000) as the soft segments, anionic diol dimethylol propionic acid (DMPA) and nonionic diol Y-mer N 120 (NID) as the donors of hydrophilic groups. The chain extension reaction between residual NCO groups was made by using hydrazine (HYD). The effects of the combination of anionic and nonionic monomer and macrodiol types on the performance of the WPUDs were studied in terms of particle size distribution and dispersion stability. The results showed that the WPUDs exhibited narrow particle size distribution, good appearance and good mechanical properties.
Optimal Boundary Conditions for ORCA-2 Model
Creators: name: Kazantsev, Eugene
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A 4D-Var data assimilation technique is applied to a ORCA-2 configuration of the NEMO in order to identify the optimal parametrization of the boundary conditions on the lateral boundaries as well as on the bottom and on the surface of the ocean. The influence of the boundary conditions on the solution is analyzed as in the assimilation window and beyond the window. It is shown that optimal conditions for vertical operators allows to get stronger and finer jet streams (Gulf Stream, Kuroshio) in the solution. Analyzing the reasons of the jets reinforcement, we see that the major impact of the data assimilation is made on the parametrization of the bottom boundary conditions for lateral velocities u and v. Automatic generation of the tangent and adjoint codes is also discussed. Tapenade software is shown to be able to produce the adjoint code that can be used after a memory usage optimization.
Photodissociation and radiative association of HeH+ in the metastable triplet state
Creators: name: Loreau, J.
name: Vranckx, S.
name: Desouter-Lecomte, M.
name: Vaeck, N.
name: Dalgarno, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the photodissociation of the metastable triplet state of HeH+ as well as its formation through the inverse process, radiative association. In models of astrophysical plasmas, HeH+ is assumed to be present only in the ground state, and the influence of the triplet state has not been explored. It may be formed by radiative association during collisions between a proton and metastable helium, which are present in significant concentrations in nebulae. The triplet state can also be formed by association of He+ and H, although this process is less likely to occur. We compute the cross sections and rate coefficients corresponding to the photodissociation of the triplet state by UV photons from a central star using a wave packet method. We show that the photodissociation cross sections depend strongly on the initial vibrational state and that the effects of excited electronic states and non-adiabatic couplings cannot be neglected. We then calculate the cross section and rate coefficient for the radiative association of HeH+ in the metastable triplet state.
title: A Roman fortification on the Burgberg at Hedemünden (Lkr. Göttingen)?
Creators: name: Baatz, Dietwulf
Publisher: name: University Library Heidelberg
Year: 2016

description: Der Ringwall Hünenburg auf dem Burgberg bei Hedemünden war kein »Römerlager« der augusteisch-frühtiberischen Epoche. Das ergibt sich bereits aus der Zusammensetzung der Funde. Diese ist völlig verschieden von jener gesichert römischer Militärlager dieser Epoche. Sie entspricht aber prinzipiell derjenigen der beispielhaft erwähnten Fundplätze von Kalkriese (Schlachtfeld) und Döttenbichl bei Oberammergau (Opferplatz). Die augusteischen Funde vom Burgberg lagen in bzw. auf einer relativ dünnen Bodenschicht, in die der Ringwall erst nachträglich wohl im Laufe des 1. Jahrhunderts n. Chr. hineingebaut worden ist. Hinweise auf kultische Deponierung legen nahe, dass die erwähnte augusteische Fundschicht wahrscheinlich von einem germanischen Opferplatz herrührt. Der etwas später entstandene Ringwall diente möglicherweise als Einhegung (»Temenos«) des vermuteten Opferplatzes. Neue Grabungen und Auswertungen sind notwendig, um den überaus interessanten Fundort richtig verstehen und würdigen zu können.
description: The circular rampart Hünenburg on the Burgberg at Hedemünden was not a »Roman fortification« of the Augustan- early Tiberian period. This was already indicated by the composition of the finds which is completely different to those of ascertained Roman military camps of this period. However, the composition does principally correspond to sites such as Kalkriese (battle field) and Döttenbichl close to Oberammergau (sacrificial site). The finds from the Burgberg were discovered in or on top of a relatively thin layer of soil. The ring ditch was inserted only later, probably during the 1st century AD. Evidence for ritual depositions indicates that the mentioned Augustan layer of artefacts finds its origin in a Germanic sacrificial site. It is possible that the later ring ditch served as an enclosure (»temenos«) of the supposed sacrificial site. More excavations and analyses are necessary to understand this extremely interesting site to its full extent and appreciate it properly.
Lipid-based formulations of microemulsion-loaded oleogels for the oral delivery of carvedilol
Creators: name: Hamed, Rania
name: Seder, Bayan Yaser
name: Bardaweel, Sanaa K.
name: Qawass, Hala
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology

description: This work aimed to develop controlled-release lipid-based formulations of microemulsion-loaded oleogels for the oral delivery of the poorly soluble drug carvedilol (CARV). The microemulsion-loaded oleogels were prepared by the oleogelator Compritol® 888 (CP888). CARV was loaded into submicron-sized emulsions (CARV-MEs) of various ratios of surfactant and cosurfactant. The CARV-MEs were entrapped into CP888-based oleogels, forming CARV-ME oleogels. The rheological properties and dissolution studies of the CARV-ME oleogels were determined. MTT assay test was performed to ensure the safety of oleogel formulations. The optimized formulation of CARV-ME oleogel was subjected to stability studies. The results revealed that CARV-MEs were thermodynamically stable of spherical globules of average size 13.3–57.4 nm, polydispersity index (PDI) range of 0.24–0.52, and interfacial tension of 29.9 ± 0.2 mN/m. Oleogels exhibited viscoelastic properties with more elastic behavior. The drug release rate was found to be dependent on the surfactant/cosurfactant ratio. A negative correlation was found between surfactant concentration and IC50. The optimized CARV-MEs oleogel was stable for 3 months at various storage conditions. In conclusion, the entrapment of the CARV-MEs, with various surfactant to cosurfactant ratios, into oleogels influences the dissolution rate and mechanism of drug release and the safety of CARV-MEs oleogels.
title: Magdeburg in 805 – a venue of the »early Saxon occupation of the Magdeburg area«?
Creators: name: Ludowici, Babette
Publisher: name: University Library Heidelberg
Year: 2016

description: Der Beitrag informiert über Einzelergebnisse der Auswertung der Grabungen von 1959 bis 1965 auf dem Magdeburger Domplatz zu der damals dort von E. Nickel erfassten und als Befestigungsbau Karls des Großen angesprochenen »Doppelgrabenanlage«. R. Kuhn hat diese Befestigungsgräben 2005 der Völkerwanderungszeit zugewiesen und ihren Bau im Kontext einer mutmaßlichen »sächsischen Besetzung des Magdeburger Raumes« im 6. Jahrhundert vermutet. Auf der Grundlage einer eingehend quellenkritischen Reflektion seiner Datierungsargumente und einer Reihe neu datierter Befunde aus der Nickelschen Altgrabung wird erläutert, dass eine solche historische Einordnung der Gräben allein durch den archäologischen Befund nicht abgesichert werden kann.
description: This contribution presents single results of the analysis of the excavations between 1959 and 1965 on the cathedral square at Magdeburg. The same campaign then traced a »double-ditched structure« which was interpreted as a fortification of Charles the Great. However, in 2005, R. Kuhn has attributed these defence ditches to the Migration Period and suggested that they were dug in context with the supposed »Saxon occupation of the Magdeburg area« in the 6th century. On the basis of an intensive source-critical re-examination of Kuhn’s arguments and a number of newly dated features from the former excavation of E. Nickel it is demonstrated that archaeology alone cannot affirm the ditches with this historical period with certainty.
Exploring Scalable, Distributed Real-Time Anomaly Detection for Bridge Health Monitoring
Creators: name: Moallemi, Amirhossein
name: Burrello, Alessio
name: Brunelli, Davide
name: Benini, Luca
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Modern real-time Structural Health Monitoring systems can generate a considerable amount of information that must be processed and evaluated for detecting early anomalies and generating prompt warnings and alarms about the civil infrastructure conditions. The current cloud-based solutions cannot scale if the raw data has to be collected from thousands of buildings. This paper presents a full-stack deployment of an efficient and scalable anomaly detection pipeline for SHM systems which does not require sending raw data to the cloud but relies on edge computation. First, we benchmark three algorithmic approaches of anomaly detection, i.e., Principal Component Analysis (PCA), Fully-Connected AutoEncoder (FC-AE), and Convolutional AutoEncoder (C-AE). Then, we deploy them on an edge-sensor, the STM32L4, with limited computing capabilities. Our approach decreases network traffic by $\approx8\cdot10^5\times$ , from 780KB/hour to less than 10 Bytes/hour for a single installation and minimize network and cloud resource utilization, enabling the scaling of the monitoring infrastructure. A real-life case study, a highway bridge in Italy, demonstrates that combining near-sensor computation of anomaly detection algorithms, smart pre-processing, and low-power wide-area network protocols (LPWAN) we can greatly reduce data communication and cloud computing costs, while anomaly detection accuracy is not adversely affected.
description: 14 pages, 5 tables, 12 figures
title: Die Anfänge des Neolithikums vom Orient bis Nordeuropa. Fundamenta (Hrsg. Hermann Schwabedissen) Reihe B Band 3/VIIIb; Anthropologie 2. Teil. Köln/Wien 1978.
Creators: name: Gerhardt, Kurt
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Die Anfänge des Neolithikums vom Orient bis Nordeuropa. Fundamenta (Hrsg. Hermann Schwabedissen) Reihe B Band 3/VIIIb; Anthropologie 2. Teil. Böhlau Verlag, Köln/Wien 1978. 351 Seiten, 84 Abbildungen, 101 Tabellen im Text sowie 48 Tafeln und 100 Tabellen. Preis DM
230,-.
Das Hypothesen-Beispiel (86e-87b) in Platons Menon
Creators: name: Bensch, Hans-Georg
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Platon
subject: Menon
subject: O. Hallich
subject: Quadratur des Kreises
subject: π
subject: Hypothese
subject: richtige Vorstellung
subject: Erkenntnis
subject: 86e
subject: Tugend
subject: Lehrbarkeit
subject: Plato
subject: Meno
subject: Squaring the circle
subject: hypothesis
subject: true opinion
subject: knowlegde
subject: virtue
subject: teachability
subject: Plato
subject: Plato / Dialogi / Meno
subject: Interpretation
subject: Dewey Decimal Classification::100 | Philosophie

description: Anhand der vorgelegten Interpretation eines rätselhaften Geometriebeispiels in Platons Menon-Dialog (St. 86e-87b) wird gezeigt, was Thema des Dialogs ist: Die Lehrbarkeit der Tugend ist nur das Modell, an dem ein Begriff von Erkenntnis erläutert wird. Ein solcher Begriff kommt ohne den Unterschied von „richtiger Vorstellung und Erkenntnis“ nicht aus.
3d & 5d gauge theory partition functions as q-deformed CFT correlators
Creators: name: Nieri, Fabrizio
name: Pasquetti, Sara
name: Passerini, Filippo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: 3d N=2 partition functions on the squashed three-sphere and on the twisted product S2xS1 have been shown to factorize into sums of squares of solid tori partition functions, the so-called holomorphic blocks. The same set of holomorphic blocks realizes squashed three-sphere and S2xS1 partition functions but the two cases involve different inner products, the S-pairing and the id-pairing respectively. We define a class of q-deformed CFT correlators where conformal blocks are controlled by a deformation of Virasoro symmetry and are paired by S-pairing and id-pairing respectively. Applying the bootstrap approach to a class of degenerate correlators we are able to derive three-point functions. We show that degenerate correlators can be mapped to 3d partition functions while the crossing symmetry of CFT correlators corresponds to the flop symmetry of 3d gauge theories. We explore how non-degenerate q-deformed correlators are related to 5d partition functions. We argue that id-pairing correlators are associated to the superconformal index on S4xS1 while S-pairing three-point function factors capture the one-loop part of S5 partition functions. This is consistent with the interpretation of S2xS1 and squashed three-sphere gauge theories as codimension two defect theories inside S4xS1 and S5 respectively.
description: 42 pages, 2 figures
Characterization of Downlink Transmit Power Control during Soft Handover in WCDMA Systems
Creators: name: Gupta, Palash
name: Mohammed, Hussain
name: Hashem, M. M. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This paper presents the characterization of power control in WCDMA systems. We know that CDMA is an interference limited system. It is shown that the unbalance scheme is reliable and successful for both 2-way and 3-way soft handover. Unbalance scheme minimizes interference and speed up the soft handover algorithm to support more users quickly. Furthermore it requires minimum time to make decision for proper power control in soft handover status.
Herstellung und Charakterisierung von polymeren Schichtsystemen für die Validierung röntgenanalytischer Verfahren
Creators: name: Schaumann, Ina
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Polymer multilayer systems
subject: in-house reference materials
subject: depth profile analysis
subject: Polymere Multischichtsysteme
subject: hausinterne Referenzmaterialien
subject: Tiefenprofilanalyse
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Effect of composition of mono/di-hydroxy organic compounds and temperature on the aggregation behavior and physico-chemical properties of polyvinyl alcohol + TTAB mixture
Creators: name: Sultana, Sharmin
name: Rub, Malik Abdul
name: Rahman, Marzia
name: Rana, Shahed
name: Rahman, Mohammad Majibur
name: Hoque, Md. Anamul
name: Alghamdi, Yousef G.
name: Asiri, Abdullah M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Herein, the aggregation manners of polyvinyl alcohol (PVA) with tetradecyltrimethylammonium bromide (TTAB) in alcohols/diols media containing various concentrations and at several temperatures were performed using the conductivity measurement technique. Different physico-chemical parameters, such as critical micelle concentration (CMC), fraction of bound counter ions (β) and thermodynamic properties (ΔGom, ΔHom, ΔSom, and ΔCom) for the TTAB + PVA mixture in aqueous solutions of EtOH (EtOH), 1-propanol (1-PrOH), ethylene glycol (EG), and propylene glycol (PrG), have been determined. The CMC values were found to undergo a decrease in 1-PrOH in comparison to the values obtained in aqueous media, but in EtOH, the CMC value firstly decreases, touches the lowest point, and then exhibits an upsurge with further increase of the percentage of EtOH. The observed greater CMC values in diols media disclose that the micelle formation of TTAB + PVA mixture is delayed in the manifestation of diols. The CMC values of TTAB + PVA mixture have also been observed to vary with the change of study temperature. The negative values of ΔG0m were obtained for all circumstances suggesting a spontaneous aggregation phenomenon of TTAB + PVA system. The values of ΔH0m and ΔS0m dictate that the PVA molecule interacts exclusively with TTAB through the formation of hydrogen bonding, ion-dipole, and hydrophobic interaction. Furthermore, the standard molar heat capacity (ΔC0m), compensation temperature (Tc), intrinsic enthalpy gain (ΔH0,*m), and the thermodynamic properties of transfer (ΔG0m.tr, ΔH0m.tr. and ΔS0m.tr.) for the studied system were assessed and demonstrated with appropriate explanations.
Quantenchemische Untersuchung der Adsorption von Wassermolekülen an defekten NaCl(100)- und MgO(100)-Oberflächen
Creators: name: Ahlswede, Bernd
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: SINDO1
subject: adsorption: H2O/NaCl(100)
subject: H2O/MgO(100)
subject: surface defects
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Gluon cascades and amplitudes in light-front perturbation theory
Creators: name: Cruz-Santiago, C. A.
name: Stasto, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct the gluon wave functions, fragmentation functions and scattering amplitudes within the light-front perturbation theory. Recursion relations on the light-front are constructed for the wave functions and fragmentation functions, which in the latter case are the light-front analogs of the Berends-Giele recursion relations. Using general relations between wave functions and scattering amplitudes it is demonstrated how to obtain the maximally-helicity violating amplitudes, and explicit verification of the results is based on simple examples.
description: 25 pages, 15 figures
title: As time goes by – Vergleich der Perspektiven alter und schwerkranker Menschen im Hinblick auf die Bedeutung von Zeit
Creators: name: Laryionava, Katsiaryna
name: Miche, Martina
name: Wahl, Hans-Werner
name: Winkler, Eva C.
Publisher: name: University Library Heidelberg
Year: 2015

description: Alternde Menschen haben eine andere Zeiterfahrung als junge Menschen. Auch bei schwer erkrankten Krebspatienten verändert sich die Wahrnehmung des Zeiterlebens. In diesem konzeptionellen Aufsatz werden zunächst die geläufigen Ansätze zum Zeiterleben aus der Entwicklungs- und Alternsforschung wie die sozio-emotionale Selektivitätstheorie (SST) von Carstensen oder Zeitperspektive von Zimbardo und Boyd vorgestellt. Im zweiten Teil des Aufsatzes wird die Zeitwahrnehmung bei Patienten mit fortgeschrittener Krebserkrankung analysiert. Die Krebserkrankung führt zur Erosion der Zukunftsperspektive, Verlangsamung der Geschwindigkeit des Zeiterlebens sowie zur Re-Priorisierung der verbliebenen Zeit. Die Erklärungsmuster für das Zeiterleben bei älteren Menschen und Menschen mit Krebserkrankung werden dann verglichen. Die Gegenüberstellung weist auf sich abzeichnende Gemeinsamkeiten wie beispielsweise eine kürzere Zukunftsperspektive, starke Fokussierung auf emotionale Ziele, aber auch Unterschiede hin. Am Ende werden erste gemeinsame Studienkonzepte und –ergebnisse vorgestellt, die die Bedeutung unterschiedlicher Zeitperspektiven für Ärzte und Patienten bei Entscheidungen am Lebensende darstellen. Die Zeitperspektive aus Sicht der Ärzte und des Patienten ist dabei ein wichtiger Faktor.
description: Forschungsansatz, -methode oder -verfahren: theoretisch; explorativ; vergleichend; Pilotstudie
description: Forum Marsilius-Kolleg, Bd. 10 (2015), Beginn und Erscheinungsfrequenz: Jahr: 2012
Supplementary_material.docx
Creators: name: Kawamura, Junpei
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320101
subject: Cardiology (incl. cardiovascular diseases)

description: ・We novelty identified a circulating microRNA, miR-25-3p, in patients with acquired pulmonary arteriovenous malformations (PAVMs) post-Glenn procedure.・We validated the roles of miR-25-3p and its target PHLPP2 (PH domain and leucine-rich repeat protein phosphatase 2) in human lung microvascular endothelial cell angiogenesis.・Downregulation of PHLPP2 upregulates the endogenous HIF-1α/VEGF/VEGFR axis in lung microvascular endothelial cells under hypoxic conditions, resulting in abnormal angiogenesis in patients with PAVMs after Glenn procedure.
title: Titelblatt - Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 43, Nr. 4 (2015): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4