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Performance extrapolation is the process of evaluating the performance of a parallel program in a target execution environment using performance information obtained for the same program in a different environment. Performance extrapolation techniques are suited for rapid performance tuning of parallel programs, particularly when the target environment is unavailable. This paper describes one such...
Third generation mobile radio systems like UMTS/FPLMTS will supply a large variety of voice and data services with variable service bit rates. In Europe investigation and development in this field is supported by the Commission of the European Communities within the RACE-II Mobile Project Line. Within this frame the RACE-II ATDMA project aims to investigate the potential of advanced TDMA systems with...
Telemanipulation systems are a class of robotics that enable the operator to work remotely by a computerized human—machine interface. The first teleoperated devices were built in 1890 by Nicola Tesla, an ingenious inventor who also developed the induction motor and AC power transmission. The concept of teleoperation describes a form of control in which the human directly guides and causes each increment...
Die Entwicklung minimal-invasiver und alternativer herzchirurgischer Operationsmethoden stellt einen wesentlichen Schwerpunkt der modernen Herzchirurgie dar. Ziel ist es, neben verträglicheren und effektiveren Techniken auch effizientere Algorithmen zu etablieren.
The superiority of off-pump coronary artery bypass (OPCAB) versus on-pump coronary revascularization remains to be conclusively proven with only a few randomized studies performed with small groups of patients [1, 15, 18, 19]. However, a significant body of evidence, from large risk-adjusted retrospective studies, has suggested that coronary surgery performed without cardiopulmonary bypass (CPB) may...
High precision tracking using gaseous detectors mainly has two basic requirements: the first being a stable gas composition, the latter being a well-known space-drift time relation. But due to several reasons such as e.g. contamination by water or air a change of the gas composition might occur and thus influence the real space-drift time relation. To continuously monitor the composition of the gas...
The Wireless World Initiative (WWI) is a major European research initiative to create the technologies needed for systems beyond 3G (B3G) in a cross industry and academia research collaboration. The WWI is a set of 5 coordinated research projects partly funded under the European Union's 6th Framework Programme (FP6) spanning the communications stack from future wireless air interfaces, through ambient...
WINNER is an international research project under framework program 6 (FP6) of the European Commission. The main objective is the development of the new radio interface for systems beyond 3G. WINNER is part of the wireless world initiative (WWI), which is a series of cooperating projects in FP6 to develop future systems including all entities from a system perspective. The project is developing all...
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