Stuttgarter Symposium für Produktentwicklung SSP 2023 : Tagungsband zur Konferenz, Stuttgart, 25. Mai 2023 See

Mit dem Ziel, nationale und internationale Fachleute unterschiedlicher Disziplinen der Produktentwicklung aus Industrie und Wissenschaft in den Dialog zu bringen, organisiert der Verein zur Förderung produktionstechnischer Forschung e.V. und das Fraunhofer IAO gemeinsam mit dem Institut für Konstruktionstechnik...

A preCICE-FMI Runner to couple controller models to PDEs See

Partitioned simulation or co-simulation allows to simulate complex systems by breaking them into smaller, independent subsystems. The Functional Mock-Up Interface FMI enables co-simulation by defining a framework for simulation models. Models adhering to the standard interface (FMUs) are executed and&...

Ableitung von Typologien adaptiver Hochhausstabtragwerke mittels der Methode der Einflussmatrizen See

Im Jahr 2015 haben 194 Länder und die Europäische Union im Pariser Klimaabkommen vereinbart, die Erderwärmung auf 1,5 °C zu beschränken. Um dies zu erreichen, müssen unter anderem alle produzierenden Industrien eine erhebliche Transformation umsetzen, um Produktion und Produkte nachhaltiger zu&#x...

Porous polymers via emulsion templating : pore deformation during solidification cannot be explained by an osmotic transport! See

Using microfluidics, we were able to synthesize monodisperse water-in-monomer emulsions with styrene and divinylbenzene (DVB) as monomers. When polymerizing and drying these emulsions, we found that the structure of the resulting macroporous polymer strongly depends on the type of initiator. With...

Characterization of active matter in dense suspensions with heterodyne laser Doppler velocimetry See

We present a novel approach for characterizing the properties and performance of active matter in dilute suspension as well as in crowded environments. We use Super-Heterodyne Laser-Doppler-Velocimetry (SH-LDV) to study large ensembles of catalytically active Janus particles moving under UV illum...

Influence of cycling profile, depth of discharge and temperature on commercial LFP/C cell ageing : post-mortem material analysis of structure, morphology and chemical composition See

The paper presents post-mortem analysis of commercial LiFePO4 battery cells, which are aged at 55 °C and - 20 °C using dynamic current profiles and different depth of discharges (DOD). Post-mortem analysis focuses on the structure of the electrodes using atomic force microscopy (AFM) and sca...

Manners as desire management See

Is behaving politely towards others morally valuable? Or are manners merely conventional rules which make social interaction run more smoothly without fulfilling any deeper ethical role? Even though the ‘value of manners’ is far from a mainstream topic in contemporary philosophy, there ...

Considerations about the quality assessment of travel time and travel distance distributions in transport modelling : a proposal for a standardized methodology See

In travel demand modelling, trip distance distributions or trip time distributions are used to evaluate how well a model fits with observed sample data. Therefore, the comparison of distributions is an essential part in the model validation process. Despite its importance, the common&#x...

Integrated dispersive structures for bandwidth-enhancement of silicon grating couplers See

In photonic integrated circuits grating couplers are commonly used to establish an efficient and stable fiber-to-chip link. However, the actual coupling efficiency of a fiber-to-chip interface depends strongly on the used wavelength and exhibits a maximum at a distinct target wavelength, det...

The direct method of Lyapunov for nonlinear dynamical systems with fractional damping See

In this paper, we introduce a generalization of Lyapunov’s direct method for dynamical systems with fractional damping. Hereto, we embed such systems within the fundamental theory of functional differential equations with infinite delay and use the associated stability concept and known theo...

A compact two-frequency notch filter for millimeter wave plasma diagnostics See

Sensitive millimeter wave diagnostics in magnetic confinement plasma fusion experiments need protection from gyrotron stray radiation in the plasma vessel. Modern electron cyclotron resonance heating (ECRH) systems take advantage of multi-frequency gyrotrons. This means that the frequency band of some...

Isolation and characterization of 2-butoxyethanol degrading bacterial strains See

A total of 11 bacterial strains capable of completely degrading 2-butoxyethanol (2-BE) were isolated from forest soil, a biotrickling filter, a bioscrubber, and activated sludge, and identified by 16S rRNA gene sequence analysis. Eight of these strains belong to the genus Pseudomonas; t...

A posteriori error analysis and adaptive non-intrusive numerical schemes for systems of random conservation laws See

This article considers one-dimensional random systems of hyperbolic conservation laws. Existence and uniqueness of random entropy admissible solutions for initial value problems of conservation laws, which involve random initial data and random flux functions, are established. Based on these results&#...

Why do our rainfall-runoff models keep underestimating the peak flows? See

In this paper, the question of how the interpolation of precipitation in space by using various spatial gauge densities affects the rainfall-runoff model discharge if all other input variables are kept constant is investigated. The main focus was on the peak flows. This was do...

Digital self-interference cancellation using FPGA for in-band full-duplex radios See

Conventionally, the transmission and the reception of signals in a particular wireless communication system is performed using the half-duplex method, wherein the transmitter and the receiver signals are either time-multiplexed or frequency-multiplexed. However, in case of an in-band full-duplex syste...

Sound characteristics of disordered granular disks : effects of contact damping See

We investigate numerically the sound properties of disordered dense granular packings in two dimensions. Employing linear equations of motion and excluding contact changes from our simulations, we demonstrate time evolution of sinusoidal standing waves of granular disks. We varied the strength&#x...

Synthesis of (R)-mandelic acid and (R)-mandelic acid amide by recombinant E. coli strains expressing a (R)-specific oxynitrilase and an arylacetonitrilase See

Chiral 2-hydroxycarboxylic acids and 2-hydroxycarboxamides are valuable synthons for the chemical industry. The biocatalytic syntheses of (R)-mandelic acid and (R)-mandelic acid amide by recombinant Escherichia coli clones were studied. Strains were constructed which simultaneously expressed a (R)-specific oxyn...

Mixing time scale models for multiple mapping conditioning with two reference variables See

A novel multiple mapping conditioning (MMC) approach has been developed for the modelling of turbulent premixed flames including mixture inhomogeneities due to mixture stratification or mixing with the cold surroundings. MMC requires conditioning of a mixing operator on characteristic quantities ...

Charge-order phase transition in the quasi one-dimensional organic conductor (TMTTF)2NO3 See

Low-dimensional organic conductors show a rich phase diagram, which has, despite all efforts, still some unexplored regions. Charge ordered phases present in many compounds of the (TMTTF)2X family are typically studied with their unique electronic properties in mind. An influence on the ...