Negative Exercise Stress Test: Does it Mean Anything?

Negative exercise stress test Does it mean anything?

Introduction Despite its low sensitivity and specificity (67% and 72%, respectively), exercise testing has remained one of the most widely used noninvasive tests to determine the prognosis in patients with suspected or established coronary disease. As a screening test for coronary artery disease, the exercise stress test is useful in that it is relatively simple and inexpensive. It has been con...

What does it mean ?

As renewed attention has been given by policy makers to energy conservation issues, it has ft-equently been asserted that an energy-efficiency gap exists between actual and optimal energy use. The critical question is how to define the optimal level of energy efficiency. This paper seeks to disentangle some confusing strands of argument that are frequently brought to bear on this question, by i...

participation, what does it mean?

participation has been with us since the inception of living in a family. participation developed in the matrix of religion and, two centuries ago, opend up its way in political systems of european countries. it supported the democratic principle of people's determining their own destiny. today, participation is considered a necessity for the total development of not only individuals, but ...

What does it all mean?

Do Images Mean Anything?

We analyze the operations that form the conceptual foundation of traditional database: the determination and matching of the meaning of a record of data. With a careful definition of the “meaning” of a piece of data, we show that matching can be naturally defined. We then analyze whether a similar concept can be applied to image databases. We argue that several concepts, that led to image datab...