TY - JOUR AU - Fuchs, Christian ID - 38140 IS - 1 JF - tripleC: Communication, Capitalism & Critique TI - The Utopian Internet, Computing, Communication, and Concrete Utopias VL - 18 ER - TY - JOUR AU - Fuchs, Christian ID - 38142 IS - 3 JF - Humanity & Society TI - Erich Fromm and the Critical Theory of Communication VL - 44 ER - TY - JOUR AU - Fuchs, Christian ID - 38137 IS - 2 JF - Journal of Media Ethics TI - The Ethics of the Digital Commons VL - 35 ER - TY - BOOK AU - Fuchs, Christian ID - 40131 TI - Sosyal Medya: Eleştirel Bir Giriş ER - TY - THES AU - Hader, Christoph ID - 42754 SN - 978-3-8440-7302-7 TI - Beitrag zur Steigerung der Qualität von Aluminium-Lichtbogen-Bolzenschweißverbindungen mit Hubzündung ER - TY - THES AU - Porsch, Tony ID - 42756 SN - 978-3-8440-7382-9 TI - Ersatzmodellentwicklung zur Prognose des kerbinduzierten Fügeteilversagens von Halbhohlstanznietverbindungen unter Crashbelastung ER - TY - THES AU - Pietsch, Tommy ID - 42755 SN - 978-3-8440-7128-3 TI - Entwicklung des Prägeelementschweißens für Aluminium-Stahl-Verbindungen im Karosseriebau ER - TY - THES AU - Sierak, Paulina ID - 42757 SN - 978-3-8440-7380-5 TI - Qualifizierung intelligenter Datenanalysemethoden bei vollautomatisierten Klebtechnikanwendungen ER - TY - THES AU - Gerkens, Michael ID - 42758 SN - 978-3-8440-7583-0 TI - Entwicklung einer Methodik zur numerischen Simulation des Hochgeschwindigkeits-Bolzensetzens ER - TY - JOUR AB - Let D<0 be a fundamental discriminant and denote by E(D) the exponent of the ideal class group Cl(D) of K=ℚ(√D). Under the assumption that no Siegel zeros exist we compute all such D with E(D) dividing 8. We compute all D with |D| ≤ 3.1⋅10²⁰ such that E(D) ≤ 8. AU - Elsenhans, Andreas-Stephan AU - Klüners, Jürgen AU - Nicolae, Florin ID - 34842 IS - 3 JF - Acta Arithmetica KW - Algebra and Number Theory SN - 0065-1036 TI - Imaginary quadratic number fields with class groups of small exponent VL - 193 ER - TY - JOUR AB - We give an exact formula for the number of G-extensions of local function fields Fq((t)) for finite abelian groups G up to a conductor bound. As an application we give a lower bound for the corresponding counting problem by discriminant. AU - Klüners, Jürgen AU - Müller, Raphael ID - 34841 JF - Journal of Number Theory KW - Algebra and Number Theory SN - 0022-314X TI - The conductor density of local function fields with abelian Galois group VL - 212 ER - TY - THES AU - Große Daldrup, Anna ID - 42795 TI - Modellierung des Strömungs- und Trennverhaltens viskoser Gemische in Packungskolonnen basierend auf tomographischen Untersuchungen ER - TY - JOUR AU - Fuchs, Christian ID - 41551 JF - 国外社会科学前沿 (Studies on Foreign Social Sciences) TI - 数字时代的资本主义、父权制、奴隶制与种族主义 VL - 9 ER - TY - JOUR AU - Fuchs, Christian ID - 42484 JF - Das Argument TI - Interview mit Christian Fuchs: »Der Sozialismus ist keine App und kann nicht aus dem Internet heruntergeladen werden«. Marx’ Vision der befreiten Gesellschaft bleibt im digitalen Zeitalter aktuell VL - 335 ER - TY - JOUR AU - Fuchs, Christian ID - 42486 IS - 2 JF - MATRIZes TI - Vida e comunicação cotidianas no capitalism da coronavirus VL - 14 ER - TY - JOUR AB - Thermally stabilized and subsequently carbonized nanofibers are a promising material for many technical applications in fields such as tissue engineering or energy storage. They can be obtained from a variety of different polymer precursors via electrospinning. While some methods have been tested for post-carbonization doping of nanofibers with the desired ingredients, very little is known about carbonization of blend nanofibers from two or more polymeric precursors. In this paper, we report on the preparation, thermal treatment and resulting properties of poly(acrylonitrile) (PAN)/poly(vinylidene fluoride) (PVDF) blend nanofibers produced by wire-based electrospinning of binary polymer solutions. Using a wide variety of spectroscopic, microscopic and thermal characterization methods, the chemical and morphological transition during oxidative stabilization (280 °C) and incipient carbonization (500 °C) was thoroughly investigated. Both PAN and PVDF precursor polymers were detected and analyzed qualitatively and quantitatively during all stages of thermal treatment. Compared to pure PAN nanofibers, the blend nanofibers showed increased fiber diameters, strong reduction of undesired morphological changes during oxidative stabilization and increased conductivity after carbonization. AU - Wortmann, Martin AU - Frese, Natalie AU - Mamun, Al AU - Trabelsi, Marah AU - Keil, Waldemar AU - Büker, Björn AU - Javed, Ali AU - Tiemann, Michael AU - Moritzer, Elmar AU - Ehrmann, Andrea AU - Hütten, Andreas AU - Schmidt, Claudia AU - Gölzhäuser, Armin AU - Hüsgen, Bruno AU - Sabantina, Lilia ID - 25901 JF - Nanomaterials SN - 2079-4991 TI - Chemical and Morphological Transition of Poly(acrylonitrile)/Poly(vinylidene Fluoride) Blend Nanofibers during Oxidative Stabilization and Incipient Carbonization ER - TY - JOUR AB - Large Co-MOF-74 crystals of a few hundred micrometers were prepared by solvothermal synthesis, and their structure and morphology were characterized by scanning electron microscopy (SEM), IR, and Raman spectroscopy. The hydrothermal stability of the material up to 60 °C at 93% relative humidity was verified by temperature-dependent XRD. Proton conductivity was studied by impedance spectroscopy, using a single crystal. By varying the relative humidity (70–95%), temperature (21–60 °C), and orientation of the crystal relative to the electrical potential, it was found that proton conduction occurs predominantly through the linear, unidirectional (1D) micropore channels of Co-MOF-74, and that water molecules inside the channels are responsible for the proton mobility by a Grotthuss-type mechanism. AU - Javed, Ali AU - Strauss, Ina AU - Bunzen, Hana AU - Caro, Jürgen AU - Tiemann, Michael ID - 25899 JF - Nanomaterials SN - 2079-4991 TI - Humidity-Mediated Anisotropic Proton Conductivity through the 1D Channels of Co-MOF-74 ER - TY - JOUR AB - Advances in EEG filtering algorithms enable analysis of EEG recorded during motor tasks. Although methods such as artifact subspace reconstruction (ASR) can remove transient artifacts automatically, there is virtually no knowledge about how the vigor of bodily movements affects ASRs performance and optimal cut-off parameter selection process. We compared the ratios of removed and reconstructed EEG recorded during a cognitive task, single-leg stance, and fast walking using ASR with 10 cut-off parameters versus visual inspection. Furthermore, we used the repeatability and dipolarity of independent components to assess their quality and an automatic classification tool to assess the number of brain-related independent components. The cut-off parameter equivalent to the ratio of EEG removed in manual cleaning was strictest for the walking task. The quality index of independent components, calculated using RELICA, reached a maximum plateau for cut-off parameters of 10 and higher across all tasks while dipolarity was largely unaffected. The number of independent components within each task remained constant, regardless of the cut-off parameter used. Surprisingly, ASR performed better in motor tasks compared with non-movement tasks. The quality index seemed to be more sensitive to changes induced by ASR compared to dipolarity. There was no benefit of using cut-off parameters less than 10. AU - Anders, Phillipp AU - Müller, Helen Martha AU - Skjæret-Maroni, Nina AU - Vereijken, Beatrix AU - Baumeister, Jochen ID - 38059 IS - 11 JF - Medical & Biological Engineering & Computing KW - Computer Science Applications KW - Biomedical Engineering SN - 0140-0118 TI - The influence of motor tasks and cut-off parameter selection on artifact subspace reconstruction in EEG recordings VL - 58 ER - TY - JOUR AU - Lehmann, Tim AU - Büchel, Daniel AU - Cockcroft, John AU - Louw, Quinette AU - Baumeister, Jochen ID - 32436 JF - Neuroscience KW - General Neuroscience SN - 0306-4522 TI - Modulations of Inter-Hemispherical Phase Coupling in Human Single Leg Stance VL - 430 ER - TY - GEN AU - Matzner, Tobias AU - Heesen, Jessica AU - Grundwald, Armin AU - Roßnagel, Alexander ID - 42929 T2 - der Plattform Lernende Systeme TI - Ethik-Briefing. Leitfaden für eine verantwortungsvolle Entwicklung und Anwendung von KI-Systemen ER -