TY - GEN
ED - Eke, Norbert Otto
ED - Willeke, Stephanie
ID - 50980
T2 - andererseits. Yearbook of Transatlantic German Studies 11/12 (2022/23)
TI - Special Section/Schwerpunkt: Poetologien mehrdeutigen Erinnerns. Historisierungsstrategien in der deutschsprachigen Gegenwartsliteratur
ER -
TY - CHAP
AU - Eke, Norbert
ED - Donahue, William Collins
ED - Mein, Georg
ED - Parr, Rolf
ID - 50982
T2 - andererseits. Yearbook of Transatlantic German Studies 11/12 (2022/23)
TI - Poetologien mehrdeutigen Erinnerns in der deutschsprachigen Gegenwartsliteratur.
ER -
TY - GEN
AB - In order to standardize spray flame synthesis (SFS) studies, intensive work has been done in recent years on the design of burner types. Thus, in 2019, the so-called SpraySyn1 burner was introduced (SS1), which was subsequently characterized in numerical and experimental studies. Based on this research, a modification of the nozzle design was proposed, which has now been considered in the successor model, SpraySyn2 (SS2). As little is known about the effect of the nozzle adaptation on the particle formation, we operated both burners under identical operating conditions to produce maghemite. The final powder comparison showed that SS2 yielded considerable higher specific surface areas (associated with smaller primary particle sizes), lower polydispersity, and higher phase purity. To obtain further information on the size distributions of aggregates and agglomerates generated by SS2, aerosol samples were extracted by hole in a tube (HIAT) sampling and characterized by scanning mobility particle sizing (SMPS). Samples were extracted along the centerline at different heights above the burner (HAB) above the visible flame tip (>7 cm), and quenching experiments were performed to extract the aerosol samples at different dilution rates. Thereby, it was demonstrated that performing detailed quenching experiments is crucial for obtaining representative HIAT-SMPS data. In particular, agglomerates/aggregate sizes were overestimated by up to ~70 % if samples were not sufficiently diluted. If sufficient dilution was applied, distribution widths and mean particle mobility diameters were determined with high accuracy (sample standard derivation <5 %). Our data suggested the evolution of primary particle sizes was mostly completed <7 cm HAB and it was shown aggregates/agglomerates present above the visible flame were compact in structure (non- fractal). The mean diameter of the particle ensemble grew along the centerline from 6.9 nm (7 cm) to 11.4 nm (15 cm), while distribution widths grew from 1.42 to 1.52.
ED - Tischendorf, Ricardo
ED - Massopo, Orlando
ED - Schmid, Hans-Joachim
ED - Pyrmak, Olek
ED - Dupont, Sophie
ED - Fröde, Fabian
ED - Pitsch, Heinz
ED - Kneer, Reinhold
ID - 51133
KW - Flame Spray Pyrolysis
KW - SpraySyn2
KW - Spray flame synthesis
KW - Maghemite nanoparticles
KW - Gas to particle-conversion
KW - Hole in a tube sampling
T2 - Applications in Energy and Combustion Science
TI - Maghemite nanoparticles synthesis via spray flame synthesis and particle characterization by hole in a tube sampling and scanning mobility particle sizing (HIAT-SMPS)
ER -
TY - CHAP
AU - Eke, Norbert Otto
ED - Özelt, Clemens
ED - Schneider, Martin
ID - 50981
SN - 978-3-7705-6762-1
T2 - Die Kunst der Theatereröffnung. Ästhetik und Sozialgeschichte von Bühnenprologen
TI - „Es nimmt der Raum gastfreundlich auf die Menge“. Theodor Hells Prolog zur Eröffnung des Dresdner Hoftheaters (1841)
VL - Band: 3
ER -
TY - CHAP
AU - Eke, Norbert Otto
ED - Egidi, Margreth
ED - Peters, Ludmila
ED - Schmidt, Jochen
ID - 50984
T2 - (Un)verfügbar – Kulturen des Heiligen
TI - „Wenn die Heilige Zeit da ist, werde ich […] weggehen“. Heilige Zeit in Claudia Llosas Madeinusa
ER -
TY - CHAP
AU - Eke, Norbert Otto
ED - Egidi, Margreth
ED - Peters , Ludmila
ED - Schmidt, Jochen
ID - 50983
T2 - (Un)verfügbar – Kulturen des Heiligen
TI - Das Heilige – Versuch einer Definition
ER -
TY - JOUR
AU - Eke, Norbert Otto
ID - 50985
JF - Studia theodisca 31
TI - Artaud ± Brecht Peter Weiss’ Theater-Revolution (Marat/Sade)
ER -
TY - CHAP
AU - High , Jeffrey L.
AU - Collenberg-González, Carrie
ED - Eke, Norbert Otto
ID - 51154
T2 - Amsterdamer Beiträge zur neueren Germanistik
TI - Heinrich von Kleist. Artistic and Aesthetik Legacies
VL - Bd. 96
ER -
TY - JOUR
AB - Ferroelectric domain wall (DW) conductivity (DWC) can be attributed to two separate mechanisms: (a) the injection/ejection of charge carriers across the Schottky barrier formed at the (metal-)electrode-DW junction and (b) the transport of those charge carriers along the DW. Current-voltage (I-U) characteristics, recorded at variable temperatures from LiNbO3 (LNO) DWs, are clearly able to differentiate between these two contributions. Practically, they allow us to directly quantify the physical parameters relevant to the two mechanisms (a) and (b) mentioned above. These are, for example, the resistance of the DW, the saturation current, the ideality factor, and the Schottky barrier height of the electrode-DW junction. Furthermore, the activation energies needed to initiate the thermally activated electronic transport along the DWs can be extracted. In addition, we show that electronic transport along LNO DWs can be elegantly viewed and interpreted in an adapted semiconductor picture based on a double-diode, double-resistor equivalent-circuit model, the R2D2 model. Finally, our R2D2 model was checked for its universality by successfully fitting the I-U curves of not only z-cut LNO bulk DWs, but equally of z-cut thin-film LNO DWs, and of x-cut thin-film DWs as reported in literature.
AU - Zahn, Manuel
AU - Beyreuther, Elke
AU - Kiseleva, Iuliia
AU - Lotfy, Ahmed Samir
AU - McCluskey, Conor J.
AU - Maguire, Jesi R.
AU - Suna, Ahmet
AU - Rüsing, Michael
AU - Gregg, J. Marty
AU - Eng, Lukas M.
ID - 51156
IS - 2
JF - Physical Review Applied
KW - General Physics and Astronomy
SN - 2331-7019
TI - Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium
VL - 21
ER -
TY - GEN
AB - We rigorously derive novel and sharp finite-data error bounds for highly
sample-efficient Extended Dynamic Mode Decomposition (EDMD) for both i.i.d. and
ergodic sampling. In particular, we show all results in a very general setting
removing most of the typically imposed assumptions such that, among others,
discrete- and continuous-time stochastic processes as well as nonlinear partial
differential equations are contained in the considered system class. Besides
showing an exponential rate for i.i.d. sampling, we prove, to the best of our
knowledge, the first superlinear convergence rates for ergodic sampling of
deterministic systems. We verify sharpness of the derived error bounds by
conducting numerical simulations for highly-complex applications from molecular
dynamics and chaotic flame propagation.
AU - Philipp, Friedrich M.
AU - Schaller, Manuel
AU - Boshoff, Septimus
AU - Peitz, Sebastian
AU - Nüske, Feliks
AU - Worthmann, Karl
ID - 51160
T2 - arXiv:2402.02494
TI - Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency
ER -
TY - BOOK
AU - Seitz, Simone
AU - Hamacher, Catalina
AU - Schieffer, Leonie
AU - Bunte, Charline
ID - 51132
SN - 978-3-95414-206-4
TI - Qualitätsoffensive Ganztag - Praktische Methoden für den Weg zur guten Ganztagsbildung
ER -
TY - CHAP
AU - Hartung, Olaf
ED - Hartung, Olaf
ED - Krebs, Alexandra
ED - Meyer-Hamme, Johannes
ID - 50073
SN - 1435-7658
T2 - Geschichtskulturen im digitalen Wandel?
TI - Historisches Lernen in einer ‚(Geschichts-)Kultur der Digitalität‘?
ER -
TY - BOOK
ED - Hartung, Olaf
ID - 48576
SN - 1435-7658
TI - Geschichtskulturen im digitalen Wandel?
ER -
TY - GEN
AU - Elit, Stefan
ID - 49713
IS - 4
T2 - ZfdPh
TI - Handbuch Poetikvorlesungen. Geschichte – Praktiken – Poetiken, hg. v. Gundela Hachmann, Julia Schöll u. Johanna Bohley, Berlin/Boston 2022
VL - 143
ER -
TY - JOUR
AB - Charge transfer mechanism in the deprotonation-induced n-type doping of PCBM.
AU - Dong, Chuan-Ding
AU - Bauch, Fabian
AU - Hu, Yuanyuan
AU - Schumacher, Stefan
ID - 51221
IS - 5
JF - Physical Chemistry Chemical Physics
KW - Physical and Theoretical Chemistry
KW - General Physics and Astronomy
SN - 1463-9076
TI - Charge transfer in superbase n-type doping of PCBM induced by deprotonation
VL - 26
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
AU - Jacke, Christoph
ED - Egidi, Margreth
ED - Peters, Ludmila
ED - Schmidt, Jochen
ID - 51258
SN - 978-3-8376-6611-3
T2 - (Un)verfügbar - Kulturen des Heiligen
TI - Pop-Ikonen. Transformationen des Heiligen in der deutschen Pop(musik)kultur
ER -
TY - CHAP
AU - Treder, Alexandra
ED - Cuéllar Valcárcel, María de Lourdes
ED - Gerena Meléndez, Alicia Alexesteva
ED - Gil Carillo, Ittay Osiris
ID - 48943
T2 - Memorias del III Congreso Internacional de Lenguas, Lingüística y Traducción
TI - Concepciones de cultura y de encuentros interculturales de futuros/as profesores/as de Alemán como Lengua Extranjera
ER -
TY - JOUR
AB - AbstractApproximation of subdifferentials is one of the main tasks when computing descent directions for nonsmooth optimization problems. In this article, we propose a bisection method for weakly lower semismooth functions which is able to compute new subgradients that improve a given approximation in case a direction with insufficient descent was computed. Combined with a recently proposed deterministic gradient sampling approach, this yields a deterministic and provably convergent way to approximate subdifferentials for computing descent directions.
AU - Gebken, Bennet
ID - 51208
JF - Computational Optimization and Applications
KW - Applied Mathematics
KW - Computational Mathematics
KW - Control and Optimization
SN - 0926-6003
TI - A note on the convergence of deterministic gradient sampling in nonsmooth optimization
ER -
TY - BOOK
ED - Blumberg, Eva
ED - Niederhaus, Constanze
ED - Mischendahl, Anne
ID - 40014
TI - Mehrsprachigkeit in der Schule. Sprachbildung im und durch Sachunterricht.
ER -
TY - GEN
AB - Given a real semisimple connected Lie group $G$ and a discrete torsion-free
subgroup $\Gamma < G$ we prove a precise connection between growth rates of the
group $\Gamma$, polyhedral bounds on the joint spectrum of the ring of
invariant differential operators, and the decay of matrix coefficients. In
particular, this allows us to completely characterize temperedness of
$L^2(\Gamma\backslash G)$ in this general setting.
AU - Lutsko, Christopher
AU - Weich, Tobias
AU - Wolf, Lasse Lennart
ID - 51204
T2 - arXiv:2402.02530
TI - Polyhedral bounds on the joint spectrum and temperedness of locally symmetric spaces
ER -