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Exploiting non-Markovianity for quantum control
(Nature Publishing Group, 2015)
Quantum technology, exploiting entanglement and the wave nature of matter, relies on the ability to accurately control quantum systems. Quantum control is often compromised by the interaction of the system with its environment since this causes loss of amplitude and phase. However, when the dynamics of the open quantum system is non-Markovian, amplitude and phase flow not only from the system into the environment but also back. Interaction with the environment is then not necessarily detrimental. We show that the ...
Aufsatz
Digital transformation: What we have learned (thus far) and what is next
(2021-01-06)
There is certainly a lot of discussion about digital technologies, their transformative nature, and their potentially disruptive impact on business and society. The number of publications on digital technologies and their impact on business and management have risen dramatically. This paper's main objective is to draw attention to practical and research-related views on what we know and what we still need to learn about business and management in the digital era. We do so by combining the insights obtained from ...
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The explanatory power of silent comics: An assessment in the context of knowledge transfer and agricultural extension to rural communities in southwestern Madagascar
(2019-06-06)
The distribution of silent comic illustrations can facilitate the communication and transfer of scientific recommendations about sustainable land management (SLM) to local communities in countries where many people are illiterate. However, since there are cross-cultural differences in “visual languages”, visualization styles need to be carefully selected as well as locals’ comprehension of the illustrated recommendation evaluated systematically. Three agricultural recommendations were chosen for comic-style illustrations, ...
Aufsatz
Doppelspitzen: Notlösung, Heilsbringer oder innovatives Führungsmodell? Coaching für gelingende Führungstandems
(2021-03-25)
Doppelspitzen werden in der aktuellen Führungsdebatte kontrovers diskutiert. Wissenschaftliche Erkenntnisse zur Arbeit von Führungstandems sind rar. Bisherige Coachingkonzepte befassen sich schwerpunktmäßig mit dem Konfliktcoaching von Doppelspitzen. In dem vorliegenden Beitrag wird den Fragen nachgegangen, welche Gelingensfaktoren und Herausforderungen es bei geteilter Leitung gibt und wie die Potenziale von Führungstandems durch (präventives) Coaching gehoben werden können.
Aufsatz
A Logic Based Approach to Finding Real Singularities of Implicit Ordinary Differential Equations
(2020-06-17)
We discuss the effective computation of geometric singularities of implicit ordinary differential equations over the real numbers using methods from logic. Via the Vessiot theory of differential equations, geometric singularities can be characterised as points where the behaviour of a certain linear system of equations changes. These points can be discovered using a specifically adapted parametric generalisation of Gaussian elimination combined with heuristic simplification techniques and real quantifier elimination ...
Aufsatz
Evaluation of breeding strategies for polledness in dairy cattle using a newly developed simulation framework for quantitative and Mendelian traits
(2016-06-29)
Background: Intensified selection of polled individuals has recently gained importance in predominantly horned dairy cattle breeds as an alternative to routine dehorning. The status quo of the current polled breeding pool of genetically-closely related artificial insemination sires with lower breeding values for performance traits raises questions regarding the effects of intensified selection based on this founder pool.
Methods: We developed a stochastic simulation framework that combines the stochastic simulation ...
Aufsatz
Optimization of Process Parameters for Friction Stir Welding of Aluminum and Copper Using the Taguchi Method
(2019-01-10)
Producing joints of aluminum and copper by means of fusion welding is a challenging task. However, the results of various studies have proven the potential of friction stir welding (FSW) for manufacturing aluminum-copper joints. Despite the proven feasibility, there is currently no series application in automotive industry to produce aluminum-copper joints for electrical contacts by means of FSW. To make FSW as efficient as possible for large-scale production, maximized welding speed is desired. Taking this into ...
Aufsatz
Placemaking in Action: Factors That Support or Obstruct the Development of Urban Community Gardens
(2020-01-16)
The paper examines factors that support or obstruct the development of urban community garden projects. It combines a systematic scholarly literature review with empirical research from case studies located in New Zealand and Germany. The findings are discussed against the backdrop of placemaking processes: urban community gardens are valuable platforms to observe space-to-place transformations. Following a social-constructionist approach, literature-informed enablers and barriers for the development of urban community ...
Aufsatz
Induction of protein aggregation and starvation response by tRNA modification defects
(2020-08-29)
Posttranscriptional modifications of anticodon loops contribute to the decoding efficiency of tRNAs by supporting codon recognition and loop stability. Consistently, strong synthetic growth defects are observed in yeast strains simultaneously lacking distinct anticodon loop modifications. These phenotypes are accompanied by translational inefficiency of certain mRNAs and disturbed protein homeostasis resulting in accumulation of protein aggregates. Different combinations of anticodon loop modification defects were ...
Aufsatz
Soziale Arbeit – eine Menschenrechtsprofession?
(2020-11-04)
Die Einleitung gibt einen Einblick in die Thematik dieses Themenschwerpunkts, der sich kritisch mit dem einflussreichen Verständnis von Sozialer Arbeit als Menschenrechtsprofession befasst. Er skizziert knapp die Entstehung dieses Ansatzes und die Thematik der Beiträge.