Matthias Albrecht Müller

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Memory impairments constitute an increasing objective and subjective problem with advancing age. The aim of the present study was to investigate the impact of working memory training on memory performance. The authors trained a sample of 80-year-old adults twice weekly over a time period of 3 months. Participants were tested on 4 different memory measures(More)
The nuclear receptor liver receptor homologue-1 (LRH-1, NR5A2) is a crucial transcriptional regulator of many metabolic pathways. In addition, LRH-1 is expressed in intestinal crypt cells where it regulates the epithelial cell renewal and contributes to tumorigenesis through the induction of cell cycle proteins. We have recently identified the intestinal(More)
Glucocorticoids are steroid hormones with important functions in development, immune regulation, and glucose metabolism. The adrenal glands are the predominant source of glucocorticoids; however, there is increasing evidence for extraadrenal glucocorticoid synthesis in thymus, brain, skin, and vascular endothelium. We recently identified intestinal(More)
Keywords: Switched systems Input/output-to-state stability (IOSS) State-norm estimators a b s t r a c t In this paper, the concepts of input/output-to-state stability (IOSS) and state-norm estimators are considered for switched nonlinear systems under average dwell-time switching signals. We show that when the average dwell-time is large enough, a switched(More)
OBJECTIVE To investigate changes in the T-cell repertoire in patients with chronic inflammatory demyelinating polyneuropathy (CIDP) without and with treatment of IV immunoglobulins (IVIg). METHODS The T-cell receptor (TCR) repertoire of CD4+ and CD8+ T cells in the peripheral blood was analyzed using CDR3 spectratyping. Patients with CIDP were included(More)
— The contribution of this paper is twofold. First, we discuss necessity of a dissipativity condition which was recently used to prove optimal operation of a system at steady-state in an economic MPC framework. We illustrate with several examples that this dissipativity condition is not necessary, but comes close to being so in a certain sense. Second, we(More)
— We study a dissipativity property which was recently used in several results on economic model predictive control to ensure optimal operation of a system at steady-state as well as stability. This dissipativity property involves a supply rate which depends on the state and input constraints imposed on the system. The main contribution of this paper is to(More)
— In this paper, we study the property of input/output-to-state stability (IOSS) for switched nonlinear systems under average dwell-time switching signals, both when each of the constituent systems is IOSS as well as when only some of the constituent systems are IOSS and others are not. This extends available results on input-to-state stability for switched(More)