9 research outputs found
Elite opinion and foreign policy in post-communist Russia
Russian elite opinion on matters of foreign policy may be classified as âLiberal Westerniserâ, âPragmatic Nationalistâ and âFundamentalist Nationalistâ, terms that reflect longstanding debates about the countryâs relationship with the outside world. An analysis of press
statements and election manifestoes together with a programme of elite interviews between 2004 and 2006 suggests a clustering of opinion on a series of strategic issues. Liberal Westernisers seek the closest possible relationship with Europe, and favour eventual membership of the EU and NATO. Pragmatic Nationalists are more inclined to favour practical co-operation, and do not assume an identity of values or interests with the Western countries. Fundamentalist Nationalists place more emphasis on the other former Soviet republics, and on Asia as much as Europe, and see the West as a threat to Russian values as well as to its state interests. Each of these positions,
in turn, draws on an identifiable set of domestic constituencies: Liberal Westernisers on the promarket political parties, Pragmatic Nationalists on the presidential administration and defence and security ministries, and Fundamentalist Nationalists on the Orthodox Church and Communists
Interaction of compact space debris clouds
Mathematical modelling of âspace debrisâ is one of the priority areas in ensuring the safety of space flights. We consider interaction of the dust particle clouds in accordance with our mathematical model of this phenomenon. The evolution of an ensemble of gravitating particles is studied, taking into account possible contact interactions, during which energy dissipation can occur. We consider collisions in frame of Newton theory of rigid impact, and another way, we introduce an additional potential of repulsive forces similar to the Lennard-Jones intermolecular forces. Computer experiments show that as a result of evolution the stable compact clusters can be formed. © 2020 IA
Influence of external force fields on the evolution of space debris clouds
In this paper, the evolution of a cloud of interacting particles in their orbital motion around the Earth is considered. In numerical simulations in a non-inertial orbital coordinate system, there is a large difference in the orders of the quantities used, which prevents calculations. To prevent this from happening, the equations of motion of particles are written in a special form. The proposed research algorithm allows one to obtain the relative configurations of the clouds of particles with allowance for various perturbations and with different required computational accuracy. © 202
Fibrous dysplasia of the maxillofacial area: a 15-year retrospective study
The study objective is to determine the clinical and radiological characteristics of fibrous dysplasia of the maxillofacial area in children.Materials and methods. A retrospective analysis of the data of the Department of Maxillofacial Surgery of the Russian Childrenâs Clinic for 15 years was performed. Clinical manifestations of fibrous dysplasia were compared with the X-ray characteristics in 86 patients.Results and conclusion. In the study group, boys (in 1.2 times) slightly prevailed. The median age of debut of the disease was 8.4 years, and the time before treatment was 2.2 years. The main complaint was the appearance of a painless slowly progressing deformation. Most often, the maxilla and frontal bone were affected. X-ray fibrous dysplasia was manifested by the presence of a focus with a reduced density, relative to the adjacent bone, the type of âground glassâ with the possible presence of cysts