Публикация рассчитана как на специалистов, так и на широкий круг читателей.

В книге рассматриваются проблемы, занимавшие умы ученых мыслителей и нашедшие свое выражение в различных вариантах философии истории. Для тех, кто хочет знать, что такое история, имеет ли она цель и смысл, и нужно ли ее изучать.

Note by editors of Voprosy filosofii: March 2, 1979, marked 85 years since the birth of the distinguished Soviet biochemist Academician Aleksandr Ivanovich Oparin. This splendidanniversary coincides with another remarkable event. Fifty-five years ago, in 1924, A. I. Oparin offered an original solution to a problem that had excited the human mind for centuries — the problem of the origin of life on earth. Oparin's tiny book, published in 1924 by the "Moskovskii rabochii" Press, had tremendous importance for science and (...) world view. Inthe years that followed, Oparin developed its content and won worldwide recognition, helping to establish the fame of Soviet science. (shrink)

In an article “Countering a Counter-intuitive Probability” [4], Lynn E. Rose discusses a question in conditional probability, claiming that the following problem posed by Copi [1] is usually incorrectly solved:Remove all cards except aces and kings from a deck, so that only eight cards remain, of which four are aces and four are kings. From this abbreviated deck, deal two cards to a friend. If he looks at his cards and announces that his hand contains an ace, what is the (...) probability that both his cards are aces? If he announces instead that one of his cards is the ace of spades, what is the probability then that both his cards are aces? (shrink)

In the present paper, we introduce new models of pendulum motions for two cases: the first model consists of a pendulum with mass M moving at the end of a string with a suspended point moving on an ellipse and the second one consists of a pendulum with mass M moving at the end of a spring with a suspended point on an ellipse. In both models, we use the Lagrangian functions for deriving the equations of motions. The derived equations (...) are reduced to a quasilinear system of the second order. We use a new mathematical technique named a large parameter method for solving both models’ systems. The analytical solutions are obtained in terms of the generalized coordinates. We use the numerical techniques represented by the fourth-order Runge–Kutta method to solve the autonomous system for both cases. The stabilities of the obtained solutions are studied using the phase diagram procedure. The obtained numerical solutions and analytical ones are compared to examine the accuracy of the mathematical and numerical techniques. The large parameter technique gives us the advantage to obtain the solutions at infinity in opposite with the famous Poincare’s method which was used by many outstanding scientists in the last two centuries. (shrink)