Bayesian calibration and validation of a large‐scale and time‐demanding sediment transport model See

This study suggests a stochastic Bayesian approach for calibrating and validating morphodynamic sediment transport models and for quantifying parametric uncertainties in order to alleviate limitations of conventional (manual, deterministic) calibration procedures. The applicability of our method is shown f...

Stereospezifische asymmetrische Synthese tertiärer Allylalkohol‐ Derivate über katalytische [2,3]‐Meisenheimer‐Umlagerungen See

Chirale azyklische tertiäre Allylalkohole sind bedeutende Synthesebausteine, deren enantioselektive Synthese eine anspruchsvolle Aufgabe ist. Eine wesentliche Einschränkung bei katalytisch asymmetrischen 1,2-Additionen an Ketone ist die Enantioseitendifferenzierung durch sterische Unterscheidung beider Ketonreste. Um dieses Proble...

Maneuvering the bumps in the New Silk Road : open innovation, technological complexity, dominant design, and the international impact of Chinese innovation See

Chinese innovation is again flowing westwards, which is fomented by China’s Belt and Road Initiative. In this context, we study the international impact of innovations from specific countries. Based on panel data of patents from 27 countries over 17 years, we find that levels of&#x...

Strategies for simplifying reactive transport models : a Bayesian model comparison See

For simulating reactive transport on aquifer scale, various modeling approaches have been proposed. They vary considerably in their computational demands and in the amount of data needed for their calibration. Typically, the more complex a model is, the more data are required to su...

Cationic group VI metal imido alkylidene N‐heterocyclic carbene nitrile complexes : bench‐stable, functional‐group‐tolerant olefin metathesis catalysts See

Despite their excellent selectivities and activities, Mo‐and W‐based catalysts for olefin metathesis have not gained the same widespread use as Ru‐based systems, mainly due to their inherent air sensitivity. Herein, we describe the synthesis of air‐stable cationic‐at‐metal molybdenum and tungsten ...

Isomerization reactions in anionic mesoionic carbene-borates and control of properties and reactivities in the resulting CoII complexes through agostic interactions See

We present herein anionic borate‐based bi‐mesoionic carbene compounds of the 1,2,3‐triazol‐4‐ylidene type that undergo C-N isomerization reactions. The isomerized compounds are excellent ligands for CoII centers. Strong agostic interactions with the “C-H”‐groups of the cyclohexyl substituents result in an ...

Modifizierte Enzyme ermöglichen die selektive N‐Alkylierung von Pyrazolen unter Verwendung einfacher Halogenalkane See

Die selektive Alkylierung von Pyrazolen ist eine Herausforderung in der Chemie und könnte die Synthese wichtiger Moleküle vereinfachen. In dieser Arbeit berichten wir über eine katalysatorgesteuerte Alkylierung von Pyrazolen durch eine cyclische Kaskadenreaktion mit zwei Enzymen. In diesem enzymatischen&#x...

Two light‐metal dihydrogenisocyanurate hydrates linked by diagonal relationship : syntheses, crystal structures, and vibrational spectra of Li[H2N3C3O3]·1.75 H2O and Mg[H2N3C3O3]2·8 H2O See

Single‐crystalline materials of Li[H2N3C3O3]·1.75 H2O and Mg[H2N3C3O3]2·8 H2O were obtained by dissolving stoichiometric amounts of the respective carbonates with cyanuric acid in boiling water followed by gentle evaporation of excess water after cooling to room temperature. Even though both of t...

Extending quantum links : modules for fiber‐ and memory‐based quantum repeaters See

Elementary building blocks for quantum repeaters based on fiber channels and memory stations are analyzed. Implementations are considered for three different physical platforms, for which suitable components are available: quantum dots, trapped atoms and ions, and color centers in diamond. The&#x...

Exploring the full potential of photocatalytic carbon dioxide reduction using a dinuclear Re2Cl2 complex assisted by various photosensitizers See

Photosensitizing units have already been applied to enable light‐driven catalytic reduction of CO2 with mononuclear rhenium complexes. However, dinuclear catalytic systems that are able to activate CO2 in a cooperative bimetallic fashion have only rarely been combined with photosensitizers. We he...

Revisiting and generalizing the dual iteration for static and robust output‐feedback synthesis See

The dual iteration was introduced in a conference paper in 1997 by Iwasaki as an iterative and heuristic procedure for the challenging and non‐convex design of static output‐feedback controllers. We recall in detail its essential ingredients and go beyond the work of Iwasaki by...

Homodinuclear complexes of [Cu(dppf)]+ or [Ru(bpy)2]2+ with 1,4‐Bis(camphorquinoneimino)benzene (bcqb) as a redox‐active bridging ligand See

The product μ‐bcqb from the reaction between p‐phenylenediamine and two equivalents of camphorquinone has been used as a potentially conjugated molecular bridge between two complex fragments [Cu(dppf)]+, dppf=1,1‘‐bis(diphenylphosphino)ferrocene, to yield 12+, and between two [Ru(bpy)2]2+ moieties, resulting in...

Characterization and benchmark of a novel capacitive and fluidic inclination sensor See

In this paper, a fluidic capacitive inclination sensor is presented and compared to three types of silicon-based microelectromechanical system (MEMS) accelerometers. MEMS accelerometers are commonly used for tilt measurement. They can only be manufactured by large companies with clean-room technology&...

Machine learning methods of regression for plasmonic nanoantenna glucose sensing See

The measurement and quantification of glucose concentrations is a field of major interest, whether motivated by potential clinical applications or as a prime example of biosensing in basic research. In recent years, optical sensing methods have emerged as promising glucose measurement techni...

Strategische Planung von Produktionskompetenzen See

Der Wandel des Konsumverhaltens und disruptive Geschäftsmodelle im Sinne von Business-to-User führen zu einem Wettbewerb um den Kundennutzen. Die Produktion befindet sich in einem Wandel hin zu einer nutzenzentrierten Produktion in einem Wettbewerb, der heute zusätzlich aus mehreren kleineren und ...

Tolerance See

Force-based organization and control scheme for the non-prehensile cooperative transportation of objects See

A hierarchical approach to the bottleneck problem in street networks See

Hierarchical speed-up techniques have proven to be very effective in solving pathfinding problems in street networks, especially the shortest path problem. One of the most prominent hierarchical approaches is the Contraction Hierarchies algorithm. Another important pathfinding problem is the bottlenec...

Analysis of political positioning from politician’s tweets See

Social media platforms such as Twitter have become important communication channels for politicians to interact with the electorate and communicate their stances on policy issues. In contrast to party manifestos, which lay out curated, compromised positions, the full range of positions withi...