If we have a real vector field in the plane, the integral curves foliate the plane. Similarly, if we have a complex vector field in C then the complex integral curves foliate space by Riemann surfaces. An example of a question one might ask, is whether these Riemann surfaces are dense in space. In the case of vector fields in the plane, this is impossible, but if we do it on a torus instead, it...

Portable equipments for telemedical applications is one of the most innovative sectors in biomedical engineering. Health departments of governments are interested in tele diagnostic systems to avoid collapses in hospital and urgency services. In this paper, we describe a potable electrocardiograph/holter equipment with telephony and GSM transmission, using a surface mount technology with low vo...

The creeping flow along a periodic rough surface is calculated as a series in the slope of the roughness grooves. On a scale much larger than the grooves, this flow is equivalent to that over a smooth plane which is shifted from the top of the riblets. The convergence of the series for the shift distance in term of the slope is accelerated by use of Euler transformation and of the existence of ...

Various algorithms have been proposed for the determination of the optimum paths in line networks. Moving in space is a far more complex problem, where research has been scarce. An example would be the determination of the shortest sea course between two given ports. This paper presents an examination of the problem, states the weaknesses of the existing solutions, and introduces a new approach...

The role of surface metrology with respect to manufacture and performance is explained. How the rule has changed over the years and how it is likely to develop is discussed. It is shown how the classification of workpiece performance is related to surface typology and manufacturing control.

Solder paste masks or stenc.ils are an integral part of the manufacturing process for surface mount circuit boards. This study will examine the feasibility of developing a process for rapidly ' Currently at IUA-Tencor Corporation, San Jose, CA 0-7803-6482-1 /OO/$lO.OO 02000 IEEE 2000 IEEWCPMT Int'l Electronics Manufactluring Technology Symposium