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Helms U.,Nationale Kontakt und Informationsstelle Zur Anregung | Klemperer D.,Ostbayerische Technische Hochschule Regensburg
Chirurgische Praxis | Year: 2015

To what extent in the self-help field conflicts of interest exist, can not be assessed properly due to incomplete transparency. In the authors perspective full transparency about funding and influence by companies is required. However, transparency in itself is not sufficient. In addition a greater sensitivity to the risk of conflicts of interest and avoiding conflicts of interest are necessary.

A reflective optical sensor system for distance measurements in white-goods applications is presented. The technical solution implements a well-known intensity referencing principle - the optical bridge - in a low-cost design. The influence of the ambient temperature can be compensated for. The spurious effects such as slow output drift caused by aging of optical components or the variation of the system sensitivity due to the parameter spreading of system components can be successfully overcome as well. An algorithm for linearizing the system response is described and optimized for a low-cost microcontroller. Finally, a prototype of an assembly line, which is used for producing this sensor system, is described and its basic funcionallity is demonstrated. © 2014 Oldenbourg Wissenschaftsverlag GmbH, Ein Unternehmen von de Gruyter GmbH, Berlin/Boston.

Braun B.,University of Bremen | Klemperer D.,Ostbayerische Technische Hochschule Regensburg
Public Health Forum | Year: 2015

Focus on the requirements, needs and preferences of patients has been the basis of the rhetoric of healthcare for many years. Despite some practical steps in this direction, everyday life in the German health system is still different. This will only change when care researchers, health policy makers and practitioners make patient centeredness the starting point of their sights and actions. © 2015 by De Gruyter.

Savidis S.A.,TU Berlin | Aubram D.,TU Berlin | Rackwitz F.,Ostbayerische Technische Hochschule Regensburg
Lecture Notes in Applied and Computational Mechanics | Year: 2015

In Part 1 of this series of papers a macroscopic two-equation (two-field) reduced model for the mechanics of the multi-material flow associated with vibroinjection pile installation in saturated sandwas derived. Here we employ this model to develop a so-calledmulti-material arbitraryLagrangian-Eulerian(MMALE)method. MMALE avoids the disadvantages of the classical approaches in computational continuum mechanics concerning large deformations and evolving material interfaces. The numerical implementation of this method will be outlined, and then the experimental investigations will be presented that have been carried out in order to validate the computational model. Among these investigations, small-scale model tests in chambers with observing window have been designed step-by-step to reveal penetration and vibro-injection pile installation phenomena. © Springer International Publishing Switzerland 2015.

Aubram D.,TU Berlin | Rackwitz F.,Ostbayerische Technische Hochschule Regensburg | Savidis S.A.,TU Berlin
Lecture Notes in Applied and Computational Mechanics | Year: 2015

The installation of vibro-injection piles into saturated sand has a significant impact on the surrounding soil and neighboring buildings. It is generally characterized by a multi-material flow with large material deformations, non-stationary and new material interfaces, and by the interaction of the grain skeleton and the pore water. Part 1 in this series of papers is concerned with the mathematical and physical modeling of the multi-material flow associated with vibro-injection pile installation. This model is the backbone of a new multi-material arbitrary Lagrangian-Eulerian (MMALE) numerical method presented in Part 2. © Springer International Publishing Switzerland 2015

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