Characteristics of innovative activity in preschool educational organizations

В условиях формирования инновационно ориентированной образовательной среды каждая организация ищет дальнейшие пути развития. Основным механизмом в развитии системы дошкольного образования исследователи называют поиск и освоение инноваций. В процессе инновационной деятельности в дошкольной образовательной организации, педагог может профессионально саморазвиваться, и реализовывать свой творческий потенциал.The context of the formation of an innovative educational environment makes every organization look for further ways of development. The main mechanism in the development of the preschool education system is to search for and to develop innovations. The process of innovative activity in the preschool educational organization helps the teacher to make professional progress and to actualize his creative potential

Quadratic equations over free groups are NP-complete

We prove that the problems of deciding whether a quadratic equation over a free group has a solution is NP-complete

On the Finiteness Problem for Automaton (Semi)groups

This paper addresses a decision problem highlighted by Grigorchuk, Nekrashevich, and Sushchanskii, namely the finiteness problem for automaton (semi)groups. For semigroups, we give an effective sufficient but not necessary condition for finiteness and, for groups, an effective necessary but not sufficient condition. The efficiency of the new criteria is demonstrated by testing all Mealy automata with small stateset and alphabet. Finally, for groups, we provide a necessary and sufficient condition that does not directly lead to a decision procedure

Effective-Range Expansion of the Neutron-Deuteron Scattering Studied by a Quark-Model Nonlocal Gaussian Potential

The S-wave effective range parameters of the neutron-deuteron (nd) scattering are derived in the Faddeev formalism, using a nonlocal Gaussian potential based on the quark-model baryon-baryon interaction fss2. The spin-doublet low-energy eigenphase shift is sufficiently attractive to reproduce predictions by the AV18 plus Urbana three-nucleon force, yielding the observed value of the doublet scattering length and the correct differential cross sections below the deuteron breakup threshold. This conclusion is consistent with the previous result for the triton binding energy, which is nearly reproduced by fss2 without reinforcing it with the three-nucleon force.Comment: 21 pages, 6 figures and 6 tables, submitted to Prog. Theor. Phy

Phase Transitions on Nonamenable Graphs

We survey known results about phase transitions in various models of statistical physics when the underlying space is a nonamenable graph. Most attention is devoted to transitive graphs and trees

Стеноз трахеи и релаксация диафрагмы постковидной этиологии

Pandemic of the new coronavirus infection has presented the medical community with challenges that call for immediate action. An increase in the number of severe cases of COVID-19 requiring mechanical ventilation inevitably leads not only to an increase in the complication rates, but also to combined complications. A clinical case of a combined tracheal stenosis and diaphragm after severe COVID-19 is presented here. The aim of this publication was to improve treatment outcomes of patients with multiorgan complications of post-COVID origin. Conclusion. Combined complications of a severe coronavirus infection worsen the rehabilitation prognosis, and require surgical treatment.При пандемии новой коронавирусной инфекции (НКИ) перед медицинским сообществом ставятся задачи, для решения которых требуются безотлагательные меры. Наблюдается рост числа тяжелых случаев COVID-19 (COronaVIrus Disease 2019), вызванных коронавирусом SARS-CoV-2 (Severe Acute Respiratory Syndrome-related CoronaVirus 2), при которых требуется искусственная вентиляция легких; при этом неминуемо не только увеличивается число осложнений, но и отмечается сочетание нескольких осложнений у одного пациента. Представлено клиническое наблюдение сочетания стеноза трахеи и релаксации диафрагмы постковидной этиологии у пациентки, перенесшей COVID-19 тяжелого течения. Целью работы явилось улучшение результатов лечения у пациентов с мультиорганными осложнениями постковидной этиологии. Заключение. При сочетании осложнений у пациентов после НКИ тяжелого течения ухудшается прогноз реабилитации, при лечении таких пациентов следует применять активную хирургическую тактику