The ideas of uncertain variables based on uncertain logics have been
introduced and developed for a wide class of uncertain systems. The
purpose of this mo- graph is to present basic concepts, definitions and
results concerning the uncertain variables and their applications to
analysis and decision problems in uncertain systems described by
traditional mathematical models and by knowledge rep- sentations. I hope
that the book can be useful for graduate students, researchers and all
readers working in the field of control and information science.
Especially for those interested in the problems of uncertain decision
support systems and unc- tain control systems. I wish to express my
gratitude to my co-workers from the Institute of Control and Systems
Engineering of Wroclaw University of Technology, who assisted in the
preparation of the manuscript. My special thanks go to Dr L.Siwek for
the valuable remarks and for his work concerning the formatting of the
text.