Realization of virtual information technologies in educational process of the educational organization of the higher education as the basis for increase of the professionalism and personal potential of students

В статье рассмотрены общие вопросы, касающиеся реализации виртуальных информационных технологий в образовательном процессе образовательной организации высшего образования по специальным дисциплинам в рамках повышения профессионализма и личностного потенциала обучающихся (молодежи) – формирования компетенций.In article the general questions concerning realization of virtual information technologies in educational process of the educational organization of the higher education for special disciplines within increase of the professionalism and personal potential of students (youth) – formation of competences are considered

The correspondence between a plane curve and its complement

Given two irreducible curves of the plane which have isomorphic complements, it is natural to ask whether there exists an automorphism of the plane that sends one curve on the other. This question has a positive answer for a large family of curves and H.Yoshihara conjectured that it is true in general. We exhibit counterexamples to this conjecture, over any ground field. In some of the cases, the curves are isomorphic and in others not; this provides counterexamples of two different kinds. Finally, we use our construction to find the existence of surprising non-linear automorphisms of affine surfaces.Comment: 9 pages, 3 figure

Getting competitive specialists education using international practices and tools

We describe an experiment to improve the quality of training mid-level professionals in the field of information technologies and information protection with international practices and tools on the example of Cisco's independent certificationОписан эксперимент по повышению качества подготовки специалистов среднего звена в сфере информационных технологий и защиты информации с использованием международных практик и инструментов на примере независимой сертификации компании Cisc

A classification of four-state spin edge Potts models

We classify four-state spin models with interactions along the edges according to their behavior under a specific group of symmetry transformations. This analysis uses the measure of complexity of the action of the symmetries, in the spirit of the study of discrete dynamical systems on the space of parameters of the models, and aims at uncovering solvable ones. We find that the action of these symmetries has low complexity (polynomial growth, zero entropy). We obtain natural parametrizations of various models, among which an unexpected elliptic parametrization of the four-state chiral Potts model, which we use to localize possible integrability conditions associated with high genus curves.Comment: 5 figure

Algebraic entropy and the space of initial values for discrete dynamical systems

A method to calculate the algebraic entropy of a mapping which can be lifted to an isomorphism of a suitable rational surfaces (the space of initial values) are presented. It is shown that the degree of the $n$th iterate of such a mapping is given by its action on the Picard group of the space of initial values. It is also shown that the degree of the $n$th iterate of every Painlev\'e equation in sakai's list is at most $O(n^2)$ and therefore its algebraic entropy is zero.Comment: 10 pages, pLatex fil

Electrotransport and magnetic properies of Cr-GaSb spintronic materials synthesized under high pressure

Electrotarnsport and magnetic properties of new phases in the system Cr-GaSb were studied. The samples were prepared by high-pressure (P=6-8 GPa) high-temperature treatment and identified by x-ray diffraction and scanning electron microscopy (SEM). One of the CrGa$_2$Sb$_2$ phases with an orthorhombic structure $Iba2$ has a combination of ferromagnetic and semiconductor properties and is potentially promising for spintronic applications. Another high-temperature phase is paramagnetic and identified as tetragonal $I4/mcm$

Complexity and integrability in 4D bi-rational maps with two invariants

In this letter we give fourth-order autonomous recurrence relations with two invariants, whose degree growth is cubic or exponential. These examples contradict the common belief that maps with sufficiently many invariants can have at most quadratic growth. Cubic growth may reflect the existence of non-elliptic fibrations of invariants, whereas we conjecture that the exponentially growing cases lack the necessary conditions for the applicability of the discrete Liouville theorem.Comment: 16 pages, 2 figure

Proton NMR of water colloidal solutions of nanosized crystalline LaF3and LaF3: Gd3+ particles

© 2015 AIP Publishing LLC. A study of the nuclear magnetic relaxation of water protons in a series of colloidal solutions of nanosized lanthanum trifluoride and lanthanum fluoride particles, doped with gadolinium (0.5%). The proton NMR signal was recorded by a "Proton-20 M (Chromatech)" spectrometer. It is established that the rate of longitudinal relaxation depends on the nanoparticle concentration in the water solution, and on their dimension. It is demonstrated that the proton relaxation rate in the LaF3:Gd3+ solution increases with paramagnet concentration in the nanoparticles, and decreases with increasing particle size

Proton-Radical Interaction in Crude Oil - A Combined NMR and EPR Study

© 2018 American Chemical Society. We present a detailed study of electron/nuclear interaction in a specific crude oil by continuous-wave and pulsed EPR, electron-nuclear double resonance (ENDOR) at W-band (94 GHz), and fast field-cycling dynamic nuclear polarization (FFC-DNP) at X-band. A perceptible non-Overhauser (solid) effect is found at room temperature as a result of the polarization transfer from the intrinsic oil "free" radicals to the 1H nuclei with different dynamics. On the basis of the analysis of the longitudinal nuclear relaxation times, three dynamical components described by different electron-proton coupling parameters were found, which in combination with ENDOR provides information about the distribution of the radicals in the high-molecular oil components

Острые церебральные сосудистые события после каротидной эндартерэктомии

Introduction. Acute cerebrovascular accident is recognized as the leading pathology in the structure of cerebrovascular diseases (CVD). Annually 6 million cases of CVD are registered in the world. Fatal outcomes from this pathology in Russia occur 1.5–2 times more often than in developed countries. According to the All-Russian Center for Preventive Medicine, 25% of males and 39% of females die from CVD. The incidence of CVD in Russia ranges from 460 to 560 cases per 100 thousand people. This pathology may be caused by carotid artery stenosis resulting from atherosclerotic vascular lesions and plaque formation which lead to embolism and stroke.Materials and methods. The study analyzed 341 medical histories of patients hospitalized at the Bashkir State Medical University Clinic (BSMU Clinic) in 2022, who underwent carotid endarterectomy (CEE) (288 of them had a history of chronic cerebrovascular accident) and 278 medical histories of patients with acute cerebrovascular accident, hospitalized at the Neurologic Clinic of the Avicenna Tajik State Medical University in 2022.Results and discussion. Perioperative complications that occurred during CEE at BSMU Clinic in 2022 included 12 cases of acute cerebrovascular accident of ischemic type (3.52%) and 2 cases of transient ischemic attack (0.6%), which is lower than the same rates in previously published observations at the same clinic.Conclusion. The number of complications resulting from the CEE does not exceed the global rates. Quantitative and qualitative indicators of carotid reconstructions demonstrate positive trends. Acute cerebrovascular accident requires clarifying the cause of its occurrence and taking measures to prevent ischemic strokes, including angiosurgical interventions.Введение. Острое нарушение мозгового кровообращения является ведущей патологией в структуре цереброваскулярных заболеваний (ЦВЗ). Ежегодно в мире регистрируется 6 миллионов случаев возникновения ЦВЗ. Летальный исход от данной патологии в России возникает в 1,5–2 раза чаще, чем в развитых странах. Согласно данным Всероссийского центра профилактической медицины, от ЦВЗ умирает 25 % лиц мужского пола и 39 % лиц женского пола. Частота ЦВЗ в России составляет от 460 до 560 случаев на 100 тысяч человек. Данное состояние может быть обусловлено стенозом сонных артерий, возникшим вследствие атеросклеротического поражения сосудов и образования бляшек, приводящих к эмболии и развитию инсульта.Материалы и методы. Нами был произведен анализ 341 истории болезни пациентов, госпитализированных в Клинику Башкирского государственного медицинского университета (КБГМУ) в 2022 году, которым проведена каротидная эндартерэктомия (КЭЭ), из них у 288 пациентов в анамнезе было хроническое нарушение мозгового кровообращения, и 278 историй болезни пациентов с острым нарушением мозгового кровообращения, госпитализированных в неврологическую университетскую клинику Таджикского государственного медицинского университета имени Абуали ибни Сино в 2022 г.Результаты и обсуждение. В структуре периоперационных осложнений, возникших при проведении КЭЭ за 2022 год в КБГМУ, было зафиксировано 12 случаев острого нарушения мозгового кровообращения по ишемическому типу (3,52 %) и 2 случая транзиторной ишемической атаки (0,6 %), что является более низким показателем по сравнению с ранее опубликованными наблюдениями этой же клиники.Заключение. Количество осложнений, возникших в результате проведения КЭЭ, не превышает общемировые показатели. Наблюдается положительная динамика в отношении количественно-качественных показателей каротидных реконструкций. Острое нарушение мозгового кровообращения является состоянием, требующим уточнения причины его возникновения и проведения ранней профилактики развития инсультов по ишемическому типу, включая ангиохирургические вмешательства