Synthetic jets--also referred to as mass-less jets--offer the potential of effective, on-demand, fluid-based control of separating boundary layers on highly loaded aerodynamic surfaces, without the need for a mass source. However, the control authority that may optimally be derived from such jets, and any generality of the underlying flow physics are obscured by the wide range of geometric and ...

The National Robotics Engineering Consortium and UltraStrip Systems Inc. have developed a highly flexible and productive robot to strip paint from large ships and other large ferro-magnetic structures based on the patents obtained by UltraStrip Systems, Inc. (US patents: 6,425,340; 5,849,099; 5,628,271). Removal of corrosion and coatings from large vessels has become a serious economic and envi...

The production of baryons and K 0 S mesons in quark and gluon jets has been investigated in 3-jet events using 2.8 million hadronic Z 0 decays recorded with the OPAL detector at LEP. The events were selected with various jet nding algorithms resulting in jet samples of somewhat diierent topologies. The jets were classiied according to their energy with the aid of Monte Carlo models: the lowest ...

To Ivan Koll a r on the occasion of his 60th birthday. The usual jets were introduced by C. Ehresmann as a fundamental tool in Diierential Geometry. They permit to globalize the theory of diierential systems and to give a formulation of the \innnite groups" of E. Cartan; this leads to the theory of Lie pseudogroups; initiated by C. Ehresmann, this theory was studied by many mathematicians (the ...