196,542 research outputs found
Solving the incomplete markets model in parallel using GPU computing and the Krusell–Smith algorithm
No full textThis paper demonstrates the potential of graphics processing units in solving the incomplete markets model in parallel using the Krusell–Smith algorithm. We illustrate the power of this approach using the same exercise as in Den Haan et al. (J Econ Dyn Control 34:1–3, 2010). We document a speed gain which increases sharply with the number of agents. To reduce entry barriers, we explain our methodology and provide some example algorithms
Meet you in the elevator! Pitching yourself and your research
No full textScheffel, M., & Börner, D. (2013, 31 May). Meet you in the elevator! Pitching yourself and your research. Workshop presentation at the 9th Joint European Summer School on Technology Enhanced Learning, Limassol, Cyprus.Workshop presentation at the at the 9th Joint European Summer School on Technology Enhanced Learning in Limassol, Cyprus
Gemalte Himmelsfreuden im Weltgericht. Zur Intermedialität der Letzten Dinge bei Heinrich von Neustadt
No full textSchumacher M. Gemalte Himmelsfreuden im Weltgericht. Zur Intermedialität der Letzten Dinge bei Heinrich von Neustadt. In: Scheffel M, Grothues S, Sassenhausen R, eds. Ästhetische Transgressionen. Festschrift für Ulrich Ernst zum 60. Geburtstag. Trier: Wissenschaftlicher Verlag Trier; 2006: 55-80
Linz, AT-OOeLB, Hs.-1054 (Autograph des Dichters Joseph Viktor von Scheffel, saec. XIX) [nach Konrad Schiffmann]
No full textLINZ, AT-OOELB, HS.-1054 (AUTOGRAPH DES DICHTERS JOSEPH VIKTOR VON SCHEFFEL, SAEC. XIX) [NACH KONRAD SCHIFFMANN]
Linz, AT-OOeLB, Hs.-1054 (Autograph des Dichters Joseph Viktor von Scheffel, saec. XIX) [nach Konrad Schiffmann] ( - )
[Kuvert mit Beschriftung von der Hand Konrad Schiffmanns:] Schreiben Jos. Viktor v. Scheffels an den Verein zur Unterstützung der Hinterbliebenen deutscher Künstler. 1858. 1 Bl. ( - )
[Blatt mit Beschriftung von der Hand Konrad Schiffmanns:] Jos. Viktor v. Scheffel (1820-1886). Eigenh. Brief m. U. Donaueschingen 1858. 1 S. fol. ( - )
[Brief:] ... 3. May 58 ( -
Inactivation of Matrix-bound Matrix Metalloproteinases by Cross-linking Agents in Acid-etched Dentin.
No full textSUMMARY Objectives: Published transmission electron microscopy analysis of in vitro resin-dentin bonds shows that in 44 months almost 70% of collagen fibrils from the hybrid layer disappear. Matrix metalloproteinases (MMPs) play an important role in that process and are thought to be the main factor responsible for the solubilization of dentin collagen. Therefore, this study aimed to evaluate the inactivation of matrix-bound MMPs by two different cross-linking agents, carbodiimide (EDC) or proanthocyanidin (PA), or the MMP-inhibitor, chlorhexidine (CHX), on acid-etched dentin using a simplified MMP assay method. Materials and Methods: Dentin beams (2×1×6 mm) were obtained from mid-coronal dentin of sound third molars and randomly divided into six groups (G) according to the dentin treatment: G1: Deionized water (control); G2: 0.1 M EDC; G3: 0.5 M EDC; G4: 0.5 M EDC + 35% hydroxyethyl methacrylate (HEMA); G5: 5% PA; and G6: 2% CHX. The beams were etched for 15 seconds with 37% phosphoric acid, rinsed, and then immersed for 60 seconds in one of the treatment solutions. The data were expressed both in absorbance values at 412 nm and in MMP-9 activity equivalents. The total MMP activity of dentin was analyzed for one hour by colorimetric assay (Sensolyte). Data were submitted to Wilcoxon nonparametric test and Mann-Whitney tests (p>0.05). Results: All experimental cross-linking solutions significantly reduced MMP activity from 79.8% to 95.2% compared to the control group. No difference was observed among 0.1 M EDC (84.8%), 5% PA (87.6%), and 2% CHX (79.8%). Addition of 35% HEMA to 0.5 M EDC produced inactivation (95.2%) that was similar to that of 0.5 M EDC alone (92.7%). Conclusion: Dentin treatment with cross-linking agents is effective to significantly reduce MMP activity. Mixing 0.5 M EDC and 35% HEMA did not influence EDC inhibitor potential
Die Vorzüge der Windhühner (1956)
No full textHillebrandt C. Die Vorzüge der Windhühner (1956). In: Jürgensen C, Scheffel M, eds. Günter Grass Handbuch. Berlin: de Gruyter; 2025: 169-175
Automated fault detection for additive manufacturing using vibration sensors
No full textOnline process control is a crucial task in modern production systems that use digital twin technology. The data acquisition from machines must provide reliable and on-the-fly data, reflecting the exact status of the ongoing process. This work presents an architecture to acquire data for an Additive Manufacturing (3D printer) process, using a set of consolidated Internet of Things (IoT) technologies to collect, verify and store these data in a trustful and secure way. The need for online monitoring and fault detection is addressed by the development of a classifier using Convolutional Neural Networks. This deep learning approach, using temporally aligned vibration data provided by the underlying architecture, allows raw data processing to detect patterns without signal pre-processing and without domain-specific knowledge for model building
Pointwise adaptive estimation for quantile regression
No full textA nonparametric procedure for quantile regression, or more generally nonparametric M-estimation, is proposed which is completely data-driven and adapts locally to the regularity of the regression function. This is achieved by considering in each point M-estimators over different local neighbourhoods and by a local model selection procedure based on sequential testing. Non-asymptotic risk bounds are obtained, which yield rate-optimality for large sample asymptotics under weak conditions. Simulations for different univariate median regression models show good finite sample properties, also in comparison to traditional methods. The approach is the basis for denoising CT scans in cancer research.M-estimation, median regression, robust estimation, local model selection, unsupervised learning, local bandwidth selection, median filter, Lepski procedure, minimax rate, image denoising
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