Technology selection for holistic analysis of hybrid-electric commuter aircraft Anzeigen

Electric powertrains have different characteristics than conventional powertrains with combustion engines and require unconventional aircraft designs to evolve their full potential. Therefore, this paper describes a method to identify potential aircraft designs with electrified powertrains. Promising technology ...

A fine-grained data set and analysis of tangling in bug fixing commits Anzeigen

Context: Tangled commits are changes to software that address multiple concerns at once. For researchers interested in bugs, tangled commits mean that they actually study not only bugs, but also other concerns irrelevant for the study of bugs. Objective: We want to improve ou...

End-effector trajectory tracking of flexible link parallel robots using servo constraints Anzeigen

We apply the concept of servo constraints to end-effector trajectory tracking control of parallel robots with structural link flexibilities. Such servo constraints deliver the inverse robot model where solution approaches via projections are proposed, which transform the resulting differential-algebraic&#x...

The Fermi energy as common parameter to describe charge compensation mechanisms : a path to Fermi level engineering of oxide electroceramics Anzeigen

Chemical substitution, which can be iso- or heterovalent, is the primary strategy to tailor material properties. There are various ways how a material can react to substitution. Isovalent substitution changes the density of states while heterovalent substitution, i.e. doping, can induce elec...

Synthetic and structural peculiarities of neutral and cationic molybdenum imido and tungsten oxo alkylidene complexes bearing weakly coordinating N‐heterocyclic carbenes Anzeigen

The syntheses of the neutral molybdenum imido alkylidene N-heterocyclic carbene (NHC) complexes of the general formula [Mo(NAr)(CHCMe2Ph)(NHC)XY] (Ar=2-tBu-C6H4, 2-CF3-C6H4, 2,6-Me2-C6H3, 2,6-Cl2-C6H3, adamantyl; X, Y=OTf, OC(CF3)3, OCH(CF3)2, OC6F5, SC6F5, 2,5-bis(pentafluorophenyl)phen-1-yl) bearing electron-withdrawing NHCs (1,3-dim...

Approximation of a two‐dimensional Gross-Pitaevskii equation with a periodic potential in the tight‐binding limit Anzeigen

The Gross-Pitaevskii (GP) equation is a model for the description of the dynamics of Bose-Einstein condensates. Here, we consider the GP equation in a two‐dimensional setting with an external periodic potential in the x‐direction and a harmonic oscillator potential in the y‐direction in the&...

Asymmetrische Organokatalyse durch chirale Diborane zur Herstellung von isotaktischen Polyethern Anzeigen

Mechanistic study on the DNA methyltransferase DNMT3A Anzeigen

Optimierung des örtlichen Auflösungsvermögens in der aktiven Thermografie durch eine Lockin-Kompensationsmethode und der KI-gestützten Invertierung thermischer Wellen Anzeigen

Die aktive Thermografie (TT) nutzt den natürlichen diffusen Wärmefluss, um aus der gemessenen Oberflächentemperatur Rückschlüsse auf die innere Struktur von technischen Bauteilen oder biologischen Proben zu ziehen. Allerdings beeinträchtigt die Diffusion thermischer Wellen und der dadurch induzierte laterale&#x...

A systematic study of nonionic di‐ and multiborane catalysts for the oligomerization and polymerization of epoxides Anzeigen

Borane catalysis has emerged as a powerful technology in epoxide polymerization. Still, the structure‐activity correlations for these catalysts are not fully understood to date, especially regarding compounds with nonionic backbones. Thus, in this work, 13 different borane catalysts of this respe...

Near‐surface plastic deformation in polycrystalline SrTiO3 via room‐temperature cyclic Brinell indentation Anzeigen

Dislocations are being used to tune versatile mechanical and functional properties in oxides with most current studies focusing on single crystals. For potentially wider applications, polycrystalline ceramics are of concern, provided that dislocations can be successfully introduced. However, in additi...

Merging σ‐bond metathesis with polymerization catalysis : insights into rare‐earth metal complexes, end‐group functionalization, and application prospects Anzeigen

Polymers with well‐defined structures, synthesized through metal‐catalyzed processes, and having end groups exhibiting different polarity and reactivity than the backbone, are gaining considerable attention in both scientific and industrial communities. These polymers show potential applications as fundamental ...

Hybrid modeling of multibody systems : comparison of two discrepancy models for trajectory prediction Anzeigen

This study focuses on hybrid modeling approaches that combine physical and data‐driven methods to create more effective dynamical system models. In particular, it examines discrepancy models, a type of hybrid model that integrates a physical system model with data‐driven compensation for ina...

Scanning tunneling microscopy study on topological material candidates with orbital and spin degrees of freedom Anzeigen

A mesh‐in‐element method for the theory of porous media Anzeigen

While direct homogenisation approaches such as the FE method are subject to the assumption of scale separation, the mesh‐in‐element (MIEL) approach is based on an approach with strong scale coupling, which is based on a discretization with finite elements. In this contribution we p...

Modeling and experimental validation of high‐flow fluid‐driven membrane valves for hyperactuated soft robots Anzeigen

Herein, the design, modeling, and validation of high‐flow, fluid‐driven, membrane valves tailored specifically for applications in soft robotic systems are described. Targeting the piping problem in hyper‐actuated soft robots, two fluid‐driven membrane valve designs that can admit flows of up to&...

Ultra-uniform perovskite crystals formed in the presence of tetrabutylammonium bistriflimide afford efficient and stable perovskite solar cells Anzeigen

Compositional engineering of organic–inorganic metal halide perovskite allows for improved optoelectrical properties, however, phase segregation occurs during crystal nucleation and limits perovskite solar cell device performance. Herein, we show that by applying tetrabutylammonium bistriflimide as an additive ...

Technical note: a guide to using three open-source quality control algorithms for rainfall data from personal weather stations Anzeigen

The number of rainfall observations from personal weather stations (PWSs) has increased significantly over the past years; however, there are persistent questions about data quality. In this paper, we reflect on three quality control algorithms (PWSQC, PWS-pyQC, and GSDR-QC) designed for the...

Compact electron paramagnetic resonance on a chip spectrometer using a single sided permanent magnet Anzeigen

Electron paramagnetic resonance (EPR) spectroscopy provides information about the physical and chemical properties of materials by detecting paramagnetic states. Conventional EPR measurements are performed in high Q resonator using large electromagnets which limits the available space for operando experime...