In this paper, the Helmholtz equation with quadratic damping themes is used for modeling the dynamics of a simple prey-predator system also called a simple Lotka–Volterra system. From the Helmholtz equation with quadratic damping themes obtained after modeling, the equilibrium points have been found, and their stability has been analyzed. Subsequently, the harmonic oscillations have been studied by the harmonic balance method, and the phenomena of resonance and hysteresis are observed. The primary and secondary resonances have been researched by the (...) multiple-scale method, and the conditions of stability of the amplitudes of oscillations are determined. Chaos is detected analytically by the Melnikov method and numerically using the basin of attraction, the bifurcation diagram, the Lyapunov exponent, the phase portrait, and the Poincaré section. The effects of all the parameters of the system are analyzed in detail, and special emphasis is placed on the new parameters. Through this analysis, the complex phenomena such as hysteresis, bistability, amplitude jump, resonances, and chaos have been obtained. The control of the parameters and the necessary conditions to control the aforementioned phenomena have been found. (shrink)

1. There can be no doubt as to the fact that the natural numbers of the ancients were numbers having neither a positive nor a negative sign. We find it necessary to insist upon the recognition of this truth, because articles and books on the history of elementary mathematics yield much information on how the notion of negative numbers gradually arose, but it is impossible to find any indication as to how the notion of positive numbers came about, and also (...) as to the role that was played by numbers without signs in the history of mathematics. (shrink)

Despite tendencies to compete for a prime place in moral theory, neither virtue ethics nor the four principles approach should claim to be superior to, or logically prior to, the other. Together they provide a more adequate account of the moral life than either can offer on its own. The virtues of principlism are clarity, simplicity and (to some extent) universality. These are well illustrated by Ranaan Gillon’s masterly analysis of the cases he has provided. But the vices of this (...) approach are the converse of its virtues: neglect of emotional and personal factors, oversimplification of the issues, and excessive claims to universality. Virtue ethics offers a complementary approach, providing insights into moral character, offering a blend of reason and emotion, and paying attention to the context of decisions. The cases provided can be more adequately understood if we combine the approaches. Both should foster the virtues of humility and magnanimity. (shrink)

Книга вводит читателей в круг современных междисциплинарных тенденций исследования научного познания. Для специалистов.

Для юристов-практиков и разработчиков законов, студентов, аспирантов и преподавателей юридических вузов и факультетов.

t. 1. Vlastʹ kli︠u︡cheĭ -- t. 2. Na vesakh Iova.

Издание адресовано научным работникам, преподавателям, студентам и аспирантам, а также практикам, интересующимся вопросами истории философии, эстетики, религиоведения и смежными проблемами.

The controversies in Bristol, Alder Hey and elsewhere in the UK surrounding the removal and retention of human tissue and organs have led to extensive law reform in all three UK legal systems. This paper reports a short study of the reactions of a range of health professionals to these changes. Three main areas of ethical concern were noted: the balancing of individual rights and social benefit; the efficacy of the new procedures for consent; and the helpfulness for professional practice (...) of the new legislation and regulation. Recognition of these concerns may help in forging a new partnership between professionals and patients and their families. (shrink)

Монография предназначена для специалистов в области социальной философии, социологии и истории, а также для широкого круга читателей.

The scholiast is clearly busy glossing a rare word. Here, as elsewhere in the scholia, Homer is cited for just that purpose. There is also an effective tendency to build judgements on a writer's style around the label ‘Oμηρικς. Curiously, in our case the scholiast seems to have hit upon the right reading of the passage. The detail about decaying timbers in the context of Nicias' letter could not help striking educated Greek readers, who, like Thucydides himself, had Homer at (...) their fingertips, as an echo of Agamemnon's words in Il. 2.135.1 argue that Thucydides intends the reminiscence to be perceived, and moreover, uses it to trigger off our understanding that the figure of Nicias should be read against that of the Homeric Agamemnon. (shrink)

Книга представляет собой исследование, где предпринимается попытка на основе детальной проработки первоисточников и воспроизведения основных ходов мысли и интуиций Гегеля и позднего Шеллинга провести сравнительный анализ их учений об абсолюте.

для научных работников, преподавателей, аспирантов, студентов юридических вузов и факультетов.

Tom 1. Ontologii︠a︡, gnoseologii︠a︡ i metodologii︠a︡ nauki, logika -- t. 2. Sot︠s︡ialʹnai︠a︡ filosofii︠a︡ i filosofii︠a︡ politiki -- t. 3. Filosofskai︠a︡ antropologii︠a︡ i filosofii︠a︡ kulʹtury -- t. 4. Filosofii︠a︡ dukhovnosti, obrazovanii︠a︡, religii.

The paper proves that a historical method in Marxism is not identified to a dialectical method. The logic of history and the logic of its analysis in Marxism do not always coincide. The Logical coincides with the Historical only in eternity as it actually occurs in the works by G.V.F. Hegel. Eternity which has already witnessed everything does not know history any more. In the same way, history also begins there where the eternity comes to an end. Therefore, artificial identification (...) of the Logical with the Historical in Marxism led sometimes to actual mistakes. It is no wonder that it has always caused discussions in Marxism. They are mainly explained by the fact that the deductive, abstract-to-concrete method in which the “General” appears before the “Concrete” is an anti-historical method in its Nature. In real human history the “General” which is generalization of many “Concrete” could not appear before the latter in any way. For this reason, the real historical materialism needs an inductive method of knowledge. Only in that case historical materialism will cease to remain the soviet “histmat” and becomes the real form of a new world outlook. The author is of the opinion that the Party spirit of the Soviet philosophy promoted preservation of the anomalies mentioned in Marxism. The open discussion could help to find valid but not inherited from Hegel relation of historical and logical methods in Marxism. (shrink)