Space exploration and advanced astronomy have dramatically expanded our knowledge of outer space and made it possible to study the indepth mechanisms underlying various natural phenomena caused by complex interaction of physical-chemical and dynamical processes in the universe. Huge breakthroughs in astrophysics and the planetary s- ences have led to increasingly complicated models of such media as giant molecular clouds giving birth to stars, protoplanetary accretion disks associated with the solar system’s formation, planetary atmospheres and circumplanetary space. The creation of these models was promoted by the development of basic approaches in modern - chanics and physics paralleled by the great advancement in the computer sciences. As a result, numerous multidimensional non-stationary problems involving the analysis of evolutionary processes can be investigated using wide-range numerical experiments. Turbulence belongs to the most widespread and, at the same time, the most complicated natural phenomena, related to the origin and development of organized structures (- dies of different scale) at a definite flow regime of fluids in essentially non-linear - drodynamic systems. This is also one of the most complex and intriguing sections of the mechanics of fluids. The direct numerical modeling of turbulent flows encounters large mathematical difficulties, while the development of a general turbulence theory is hardly possible because of the complexity of interacting coherent structures. Three-dimensional non-steady motions arise in such a system under loss of la- nar flow stability defined by the critical value of the Reynolds number.

Physicists present papers from the 1994 title conference, unifying cosmology and elementary particle physics. They discuss unified general relativity and quantum theory, the very early universe, time reversal for spacetime and internal symmetry, symmetry in four dimensions, neutrino physics, and con.

Trace the development of astronomy from early Greek stargazers to the ambitious pioneers: Brahe, Copernicus, Kepler, and Newton - who braved persecution and ridicule to fight for a science that relied not on ancient authorities and scriptures, but on logic, math, and careful observation. As Motz and Weaver show, the fruits of this noble pursuit - the elegant, simple natural laws - opened our eyes to the elusive rotations of the heavenly bodies, and gave rise to classical physics, and, finally, the vigorous, thriving science of astronomy today. These engaging authors go on to depict the brilliant revolution in astronomy that shattered classical physics and transformed our concepts of time, space, and matter. Beginning with Einstein's theory of relativity, Motz and Weaver celebrate and savor the twentieth century's greatest advances in physics, chemistry, and mathematics, each of which have dramatically reshaped modern astronomy.

Halpern, a popular science author and physics professor, presents mythology and philosophy of the past and images of science fiction's depiction of the future and compares them with the body of knowledge physicists possess today on the linear versus cyclical nature of the universe. He explains breakthroughs in 20th century physics and cosmology and their implications for proving the existence of a cyclical, eternal universe. Includes b&w photos and drawings.

Coding theory is still a young subject. One can safely say that it was born in 1948. It is not surprising that it has not yet become a fixed topic in the curriculum of most universities. On the other hand, it is obvious that discrete mathematics is rapidly growing in importance. The growing need for mathe­ maticians and computer scientists in industry will lead to an increase in courses offered in the area of discrete mathematics. One of the most suitable and fascinating is, indeed, coding theory. So, it is not surprising that one more book on this subject now appears. However, a little more justification of the book are necessary. A few years ago it was and a little more history remarked at a meeting on coding theory that there was no book available an introductory course on coding theory (mainly which could be used for for mathematicians but also for students in engineering or computer science). The best known textbooks were either too old, too big, too technical, too much for specialists, etc. The final remark was that my Springer Lecture Notes (# 201) were slightly obsolete and out of print. Without realizing what I was getting into I announced that the statement was not true and proved this by showing several participants the book Inleiding in de Coderingstheorie, a little book based on the syllabus of a course given at the Mathematical Centre in Amsterdam in 1975 (M. C. Syllabus 31).