Model Based Systems Engineering in Modular Design-A Potential Analysis using Portal Type Scraper Reclaimers as an Example

Many industries have to react progressively to the increasing customer requirements regarding the individualization of products. As a consequence, companies are using more and more standardization methods, such as modular, platform or type series design. This leads to an increased complexity of product development processes and thus to the necessity of concepts which allow a consistent representation of constructions kits. Model Based Systems Engineering (MBSE) can support the development of such systems. A case study carried out in cooperation with thyssenkrupp Industrial Solutions shows the potential of the approach using the industrial sector, the machinery and plant engineering industry as an example

Die Erfolgsrelevanz der Markenstärke in der 1. Fußball-Bundesliga

Die vorliegende Studie baut auf der nicht-monetären Markenstärke-Konzeptualisierung von Keller auf und untersucht die Bedeutung der Marke für den wirtschaftlichen Erfolg. Dabei erfolgt eine Weiterentwicklung bestehender Markenstärke-Modelle für den professionellen Mannschaftssport unter spezieller Berücksichtigung der 1. Fußball-Bundesliga. Erstmals wird die Auswirkung der Marke nicht anhand von subjektiven Größen oder qualitativen Einschätzungen der Konsumenten, sondern mittels objektiver Kennzahlen untersucht. Die Ergebnisse verdeutlichen die Wichtigkeit der Marke in der Fußball-Bundesliga. Die durch Konsumentenurteile ermittelte Markenstärke beeinflusst signifikant wirtschaftliche Kennzahlen und ist dementsprechend ein zentraler Erfolgsfaktor für die Klubs des professionellen Mannschaftssports

Experimentelle Untersuchung des Verformungs- und Bruchverhaltens von ein-, bi- und polykristallinem Wolfram auf der Mikroskala

Im Rahmen der vorliegenden Arbeit wurde das Verformungs- und Bruchverhalten von Wolfram auf der Mikroskala untersucht. Das Bruchverhalten wurde anhand von Mikrobalkenbiegung, das Verformungsverhalten anhand von Mikrozugversuchen charakterisiert. Die Zugversuche zeigten ein ähnliches Materialverhalten wie auf der Makroskala, hingegen konnte bei den Bruchversuchen an sehr kleinen Mikrobiegebalken Größeneffekte beobachtet werden

Optimal simple rules and the lower bound on the nominal interest rate in the Christiano–Eichenbaum–Evans model of the US business cycle

Schmitt-Grohé and Uribe (NBER wp 10724, 2004b) analyzes the optimal, simple and implementable monetary policy rules in a medium-scale macromodel, as the one proposed by Christiano et al. (J Polit Econ 113:1–45, 2005). In doing so, they use a sensible, but somewhat arbitrary constraint to account for the lower bound condition on the nominal interest rate. In this work, we check the robustness of their main results to such a criteria. We find that the optimal policies are actually absolutely robust to the easing of this criterion for all the diff erent cases considered.info:eu-repo/semantics/publishedVersio

Metabolic Profiling of Alpine and Ecuadorian Lichens

Non-targeted H-1-NMR methods were used to determine metabolite profiles from crude extracts of Alpine and Ecuadorian lichens collected from their natural habitats. In control experiments, the robustness of metabolite detection and quantification was estimated using replicate measurements of Stereocaulon alpinum extracts. The deviations in the overall metabolite fingerprints were low when analyzing S. alpinum collections from different locations or during different annual and seasonal periods. In contrast, metabolite profiles observed from extracts of different Alpine and Ecuadorian lichens clearly revealed genus- and species-specific profiles. The discriminating functions determining cluster formation in principle component analysis (PCA) were due to differences in the amounts of genus-specific compounds such as sticticin from the Sticta species, but also in the amounts of ubiquitous metabolites, such as sugar alcohols or trehalose. However, varying concentrations of these metabolites from the same lichen species e.g.,due to different environmental conditions appeared of minor relevance for the overall cluster formation in PCA. The metabolic clusters matched phylogenetic analyses using nuclear ribosomal DNA (nrDNA) internal transcribed spacer (ITS) sequences of lichen mycobionts, as exemplified for the genus Sticta. It can be concluded that NMR-based non-targeted metabolic profiling is a useful tool in the chemo-taxonomy of lichens. The same approach could also facilitate the discovery of novel lichen metabolites on a rapid and systematical basis

Preliminary assessment of the imaging capability of the YAP-(S)PET small animal scanner in neuroscience

The new and fully engineered version of the YAP–(S)PET small animal scanner has been tested at the University of Mainz for preliminary assessment of its imaging capability for studies related to neuropharmacology and psychiatry. The main feature of the scanner is the capability to combine PET and SPECT techniques. It allows the development of new and interesting protocols for the investigation of many biological phenomena, more effectively than with PET or SPECT modalities alone. The scanner is made up of four detector heads, each one composed of a 4 � 4c m 2 of YAlO3:Ce (or YAP:Ce) matrix, and has a field of view (FOV) of 4 cm axially � 4c m + transaxially. In PET mode, the volume resolution is less than 8 mm 3 and is nearly constant over the whole FOV, while the sensitivity is about 2%. The SPECT performance is not so good, due to the presence of the multi-hole lead collimator in front of each head. Nevertheless, the YAP–PET scanner offers excellent resolution and sensitivity for performing on the availability of D2-like dopamine receptors on mice and rats in both PET and SPECT modalities