Daniel Kern

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The coordinated and efficient distribution of limited resources by individual decisions is a fundamental, unsolved problem. When individuals compete for road capacities, time, space, money, goods, etc, they normally make decisions based on aggregate rather than complete information, such as TV news or stock market indices. In related experiments, we have(More)
In many prokaryotes and in organelles asparagine and glutamine are formed by a tRNA-dependent amidotransferase (AdT) that catalyzes amidation of aspartate and glutamate, respectively, mischarged on tRNAAsn and tRNAGln. These pathways supply the deficiency of the organism in asparaginyl- and glutaminyl-tRNA synthtetases and provide the translational(More)
In most prokaryotes Asn-tRNA(Asn) and Gln-tRNA(Gln) are formed by amidation of aspartate and glutamate mischarged onto tRNA(Asn) and tRNA(Gln), respectively. Coexistence in the organism of mischarged Asp-tRNA(Asn) and Glu-tRNA(Gln) and the homologous Asn-tRNA(Asn) and Gln-tRNA(Gln) does not, however, lead to erroneous incorporation of Asp and Glu into(More)
The concept of technical debt provides an excellent tool for describing technology gaps in terms any stakeholder can understand. The technical debt metaphor was pioneered by the software development community and describes technical challenges in that context very well. However, establishing a definitional framework which describes issues affecting quality(More)
Glutaminyl-tRNA synthetase from Deinococcus radiodurans possesses a C-terminal extension of 215 residues appending the anticodon-binding domain. This domain constitutes a paralog of the Yqey protein present in various organisms and part of it is present in the C-terminal end of the GatB subunit of GatCAB, a partner of the indirect pathway of Gln-tRNA(Gln)(More)
Supply chain risk management has gained significant attention in the field of operations management. In the past, research focused on initiatives that made supply chains leaner, resulting in efficient but vulnerable operations. In our study, we develop a model for upstream supply chain risk management. We collected survey data of 162 companies for the(More)
Polar codes are capacity achieving codes for binary-input symmetric memoryless channels (B-SMCs) if the code word length tends to infinity. Its encoding and decoding complexity is low. However, low complexity in code construction holds only for some special B-SMCs like the binary erasure channel (BEC). For all other B-SMCs, the code construction becomes a(More)
In many bacteria and archaea, an ancestral pathway is used where asparagine and glutamine are formed from their acidic precursors while covalently linked to tRNA(Asn) and tRNA(Gln), respectively. Stable complexes formed by the enzymes of these indirect tRNA aminoacylation pathways are found in several thermophilic organisms, and are called transamidosomes.(More)