Realization of anisotropic compass model on the diamond lattice of Cu2+^{2+} in CuAl2_2O4_4

Spin-orbit (SO) Mott insulators are regarded as a new paradigm of magnetic materials, whose properties are largely influenced by SO coupling and featured by highly anisotropic bond-dependent exchange interactions between the spin-orbital entangled Kramers doublets, as typically manifested in $5d$ iridates. Here, we propose that a very similar situation can be realized in cuprates when the Cu$^{2+}$ ions reside in a tetrahedral environment, like in spinel compounds. Using first-principles electronic structure calculations, we construct a realistic model for the diamond lattice of the Cu$^{2+}$ ions in CuAl$_2$O$_4$ and show that the magnetic properties of this compound are largely controlled by anisotropic compass-type exchange interactions that dramatically modify the magnetic ground state by lifting the spiral spin-liquid degeneracy and stabilizing a commensurate single-$\boldsymbol{q}$ spiral

High-Energy X-ray Radiation Registration Model

It is proved the necessity for carrying out computing experiments according to the mean value and the square of registered X-ray photons absorbed energy of in a scintillation detector. The offered imitation model of the transfer and registration of high-energy X-ray radiation in a sensing volume of CsI and CdWO[4] scintillation detectors is based on a Monte Carlo method. The model considers leakage of secondary photons and electrons. It is offered approaches to justification of adequacy of the developed model of a high-energy X-ray radiation registration

COMMUNIKATIVE COMPETENCE AS THE PLANNED STUDENT LEARNING OUTCOMES

The article presents the scientific and theoretical basis essence of communicative competence and the need to address the problem of identifying the level of formation of communicative competence of students in the process of teaching and training. The basis of the problem is a social-psychological, linguistic competence and approaches in the study of communicative competence.В статье представлено научно-теоретическое обоснование сущности коммуникативной компетентности и необходимости решения проблемы выявления уровня сформированности коммуникативных компетенций студента в процессе его учебнопрофессиональной подготовки. В основу решения проблемы положены социальнопсихологический, лингвистический и компетентностный подходы в исследовании коммуникативной компетентности

Environmental aspects of post-operational bioremediation of the typical municipal solid waste landfill of the administrative district

The article deals with the environmental consequences o f testing the method o f biological remediation o f the closed typical municipal solid waste landfill of the administrative district. The essence o f the method consists in the introduction of adapted composites from aboriginal, adapted or modified biological systems, primarily microorganisms for catalysis o f the decomposition process o f the organic component of waste landfills and subsequent separation o f valuable recyclable materials. The article presents the results o f the impact assessment o f a typical solid municipal waste landfil

Voluntary Refusal to Commit a Crime: Significance, General and Special Signs

The article describes and examines the significance of the rule of the voluntary refusal to commit a crime, as well as explores its general and special signs. It is noted that the voluntary refusal to commit a crime is the rule contained in any modern, progressive law. In this vein, there are different theoretical approaches to the determination of its value and signs. The signs are debatable in nature, and their establishment by the law enforcer may cause difficulties. The difference between voluntary refusal to commit a crime, which is implemented in three functions, is determined, definitions of general signs of voluntary refusal are proposed, their content is clarified. Special signs of voluntary refusal are disclosed

Legal Status of Jehovah's Witnesses in Modern Russia

The article examines the ideology of Jehovah's Witnesses, their legal situation, the reasons for banning the activities of the religious organization Jehovah's Witnesses, the opinions of experts on the ban, as well as statistics on bringing sectarians to criminal responsibility.В статье рассматривается идеология иеговистов, их правовое положение, причины запрета деятельности религиозной организации «Свидетели Иеговы», мнения экспертов по поводу запрета, а также статистика привлечения сектантов к уголовной ответственности

Dream in a mode of biological rhythms of student's youth

The healthy lifestyle of any person includes such important concepts as keeping of a mode of work and rest. For activity of a young organism importance of a dream represents special value. However in student's life as all of us know, it is very difficult to keep a constant sleep patternЗдоровый образ жизни любого человека включает такие немаловажные понятия как соблюдение режима труда и отдыха. Для жизнедеятельности молодого организма важность сна представляет особое значение. Однако, в студенческой жизни, как мы все знаем, очень трудно соблюдать постоянный режим сн

Генератор Колпітца: моделювання хаотичної динаміки і параметрична ідентифікація

Розглядаються процеси конвективно-дифузійного переносу повітряної суміші у циклонних камерах, що використовуються у якості сепараторів повітря від твердих домішок (пилу). Досліджується розподіл компонент швидкості руху потоку у циклонній камері, математична модель якого описується системою диференціальних рівнянь Нав’є-Стокса. На відміну від загальноприйнятих методів пошуку розв’язань цієї системи, що ґрунтуються на різницевих схемах, запропоновано числово-аналітичний ітераційний метод розв’язання відповідної крайової задачі. Викладено відповідний алгоритм розв’язання, що ґрунтується на використанні інтегральних перетворень, із його реалізацією шляхом розробки відповідного програмного забезпечення. Отримані результати є підґрунтя для дослідження процесів турбулентного руху суміші та відокремлення твердих домішок із повітряної суміші.The processes of convective-diffusion transport of air mixture with hard share in cyclones are discussed. The components of velocity of air in cyclone is investigates. The corresponded model is described by nonlinear system of Navier-Stokes equations, which define any single-phase fluid or gas flow. The numerical-analytics method of decision of nonlinear Nave’s—Stokes equations is proposed. Even with high-speed supercomputers only approximate solution can be achieved in many cases. Therefore the numerical-analytical method of solving such systems is discussed, which is based on integral transforms. An algorithm of realization of proposed method and corresponding software is developed. The results which are received, are the base for investigation of turbulent of flow and processes of separate of hard mixture from air in cyclones.Рассматриваются процессы конвективно-диффузионного переноса воздушных смесей в циклонных камерах, которые используются как сепараторы пыли. Исследуются процессы распределения компонент скорости воздушной смеси в циклонной камере с тангенциальным подводом смеси, динамика которых описывается дифференциальными уравнениями Навье-Стокса. В отличие от традиционного подхода к решению такого рода систем уравнений, которые основываются на использовании разностных схем, предложен численно-аналитический метод решения квазилинейных уравнений Навье-Стокса на основе интегральных преобразований. Изложен алгоритм решения задачи и соответствующее программное обеспечение. Полученные результаты положены в основу исследования процессов турбулентного переноса смеси и отделения твердых частиц из воздушной смеси

Strong short-range magnetic order in a frustrated FCC lattice and its possible role in the iron structural transformation

We investigate magnetic properties of a frustrated Heisenberg antiferromagnet with a face-centered cubic (FCC) lattice and exchange interactions between the nearest- and next-nearest neighbours, J1 and J2. In a collinear phase with the wave vector Q = (pi,pi,pi) the equations of the self-consistent spin-wave theory for the sublattice magnetization and the average short range order parameter are obtained and numerically solved. The dependence of the Neel temperature T_N on the ratio J2/J1 is obtained. It is shown, that at strong enough frustration there is a wide temperature region above T_N with strong short range magnetic order. Application of this result to description of structural phase transition between alpha and gamma-phase of Fe is considered

Geoinformation modeling of socio-ecological safety of rural areas on the example of settlements of the Belgorod region

In the course of the study, geoinformation resources were created for the rural areas of the Belgorod region. The created GIS consists of a system of hierarchically subordinate sections of rural territories of the Belgorod region - agrolandscapes of Strigunovsky (Borisovsky district), as well as Obukhovsky (Starooskolsky urban district) and Dolgopolyansky (Starooskolsky district) rural settlement