Dirk Schomburg

• Master of Science
• wiss. Mitarbeiter at Otto-von-Guericke University Magdeburg

Introduction: The G protein-coupled oestrogen receptor 1 (GPER-1) is a potential prognostic marker in breast cancer. However, its role in male breast cancer (MBC) is still unknown. This study evaluates the expression of GPER-1 in MBC samples and correlates these data with clinical and pathological parameters including patients’ survival. Material...

School closures have a negative impact on physical and mental well-being, and education, of children and adolescents. A surveillance programme to detect asymptomatic SARS-CoV-2 infection could allow schools to remain open, while protecting the vulnerable. We assessed the feasibility of a programme employing gargle samples and pool testing of indivi...

The adaption of gut microbiota (GM) throughout human life is a key factor in maintaining health. Interventions to restore a healthy GM composition may have the potential to improve health and disease outcomes in the elderly. We performed a comprehensive characterization of changes in the luminal and mucosa-associated microbiota composition in elder...

real-time fMRI decoding

real time fMRI decoding using multivariate methods

== Einleitung == Die funktionelle Magnetresonanztomographie (fMRT) ermöglicht es, verschiedene durch Stimuli oder Aufgaben stärker aktivierte Hirnareale zu detektieren. Die fMRT basiert auf unterschiedlichen magnetischen Eigenschaften des Blutes vor und nach Sauerstoffverbrauch durch Neuronenaktivität. Das gemessene Signal wird als blood-oxygen-lev...

Background & aims: The microbiome varies along the human gastrointestinal (GI) tract with exposure to luminal and mucosal factors. We analyzed active bacterial communities at 8 locations along the GI tract using high-throughput sequencing techniques. Methods: We collected saliva, mucosal, and fecal samples from healthy adults (10 men and 11 wome...

The purpose is to minimize the decoding error for realtime fMRI decoding. The mean-in-ROI-based-method and several multivariat methodes are compared. During the training pre-whitening is used to deal with the low frequencies nois. For the real-time-detrending a quantil-based method is used. The method is applied on simulated an measured data.

This paper presents a new approach for generating probability distributions for Monte Carlo based stochastic model checking. Stochastic approaches are used for quantitative analysis of safety critical systems if numerical model checking tools get overwhelmed by the complexity of the models and the exploding state space. However, sample based stocha...

3D reconstruction of arbitrary free-formed objects is an important and challenging problem in computer vision. In this paper, we first discuss the importance of primitive selection in 3D reconstruction. Subsequently, a theorem, which reveals the perspective invariance of NURBS, is shown, making it a good choice as primitive in 3D reconstruction. Co...

In diesem Artikel wird eine Möglichkeit vorgestellt, wie mit minimalem Hardwareaufwand alle 6 Freiheitsgrade einer relativen räumlichen Lage gemessen werden können. Notwendig dazu sind nur ein 2d PSD-Sensor (position sensitive device), drei Lichtquellen, die einen gebündelten Lichtstrahl abgeben (z. B. LED’s) und die Interface- und Steuerelektronik...

Es gibt eine Reihe von Verfahren zur Parameterschätzung bei der Kamerakalibrierung. Ist die Kamera aber an der Hand eines Roboters montiert, so ist auch die Hand-Auge-Kalibrierung durchzuführen. Für die Hand-Auge-Kalibrierung wurde in [8] eine sehr schnelle und elegante Methode unter Verwendung dualer Quaternionen vorgeschlagen, die aber keine Schä...