Friedrich Meyer

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— We describe a simple and low-cost humanoid leg design with compliant joints and springy feet. Mechanical compliance is achieved by combining visco-elastic material with metal. Joints and feet characteristics are evaluated by repeatedly dropping the system from a fixed height. Different joint configurations (silicone rubber, latex and brass) and foot(More)
—A novel and low-cost passively compliant mechanism is described that can be used with RC servos to actuate legged robots in tasks involving high dynamic loads such as bouncing. Compliance is achieved by combining visco-elastic material and metal parts. Joint response to dynamic loads is evaluated using real-world experiments and force data are obtained(More)
Decreases in seawater pH and carbonate saturation state (Ω) following the continuous increase in atmospheric CO2 represent a process termed ocean acidification, which is predicted to become a main threat to marine calcifiers in the near future. Segmented, tropical, marine green macro-algae of the genus Halimeda form a calcareous skeleton that involves(More)
Increasing dissolved inorganic carbon (DIC) concentrations associated with ocean acidification can affect marine calcifiers, but local factors, such as high dissolved organic carbon (DOC) concentrations through sewage and algal blooms, may interact with this global factor. For calcifying green algae of the genus Halimeda, a key tropical carbonate producer(More)
With the launch of the advanced high resolution radar satellite TerraSAR-X in summer 2006 new possibilities open to demonstrate traffic monitoring from space. At the German Aerospace Center an automatic and operational traffic processor is developed for the TerraSAR-X ground segment. This comprises the detection of moving objects in Synthetic Aperture Radar(More)
Halimeda opuntia is a cosmopolitan marine calcifying green alga in shallow tropical marine environments. Besides Halimeda’s contribution to a diverse habitat, the alga is an important sediment producer. Fallen calcareous segments of Halimeda spp. are a major component of carbonate sediments in many tropical settings and play an important role in reef(More)
One of the remaining issues in the problems of dwarf novae is whether or not enhanced mass transfer due to irradiation of the secondary stars could occur during outbursts. In a previous paper (Osaki and Meyer 2003), we presented a theoretical analysis that shows no appreciable enhancement of the mass outflow rate. This conclusion is challenged by Smak(More)
This study proposes a detailed FEM of a human volunteer's neck and proceeds to an original model validation against experimental data recorded with this human volunteer. In order to evaluate the new model against existing data a successful temporal validation of the model was obtained under frontal, lateral, oblique and rear impact. New validation(More)