SPIN-CROSSOVER IRON(II) COORDINATION COM­POUNDS: FABRICATION OF FUNCTIONAL MATERIALS AND THEIR INTEGRATION INTO MICRO- AND NANOCONSTRUCTIONS

Development of micro- and nanosized spin-crossover (SCO) materials has become an important research direction within the past decade. Such an interest is associated with high perceptive of practical application of these materials in nanoelectronic devices. Therefore, researches working in the field of SCO put considerable efforts to obtain SCO complexes in various functional forms, such as nanoparticles, thin films, etc. Fabrication of these materials is realized through different chemical and/or lithographical approaches, which allow to adjust size, shape and even organization of nanoobjects. In this review theoretical background of SCO phenomenon is described, additionally different classes of coordination compounds exhibiting spin crossover are covered. It is demonstrated that electric field, temperature and light irradiation can be effectively used for switching and control of spin state in nanosized SCO systems. Cooperative SCO with transition close to room temperature, wide hysteresis loop and distinct thermochromic effect is most often observed for Fe(II) coordination complexes. Therefore, Fe(II) SCO compounds form one of the most perspective classes of compounds for obtaining functional materials. It is shown that integration of Fe(II) compounds into micro- and nanohybrid devi­ces allows to combine unique functional pro­perties in one material due to synergy between SCO and physical properties (luminescent, electrical, etc.) of the other component. As a result, SCO compounds are interesting not only from the fundamental point of view, but also from practical, thanks to the possibility of integration of SCO Fe(II) complexes as active materials in devices of different configurations. It is expected that obtaining of new Fe(II) coordination polymers with unique SCO cha­racteristics will favor the development of new functional materials and devices on their basis in the nearest future.

Modeling the convective thermal heat transfer of nanofluids with carbon nanotubes in cylindrical minichannel

This paper is devoted to the development of an algorithm for numerical modeling convective thermal heat transfer of nanofluids with carbon nanotubes. The algorithm is based on a one-liquid description of a nanofluid with common macroscopic variables. The properties of the nanofluid are determined only by the concentration of carbon tubes, and it is assumed that their distribution is uniform and does not change during the flow. A nanofluid can have both Newtonian and non-Newtonian rheology. The fundamental point of this algorithm is the need to use real thermophysical data in solving specific problems, which depend on the concentration of carbon nanotubes naturally. The transport equations are solved using finite volume method. The algorithm was tested by comparing the simulation data with the experimental. The problem of convective thermal exchange of nanofluid with single-walled nanotubes is solved. The corresponding experimental data were previously obtained by the authors of this work. It is shown that the algorithm simulates the considered flow with high accuracy. In addition, its important advantage is the possibility of modeling the flow characteristics, which cannot be measured experimentally. As such example the data on the velocity and temperature profiles of the fluid in the channel are presented.

The Emergence and Identification of Large-Scale Coherent Structures in Free Convective Flows of the Rayleigh-Bénard Type

The revealing of the turbulence archetypes is one of the fundamental problems in the study of turbulence, which is important not only from the fundamental point of view but also for practical applications, e.g., in geophysics of ocean and lakes. The paper is devoted to the study of the emergence of coherent structures and the identification of their turbulent archetypes, typical for the free convective flows of the Rayleigh-Bénard type. Using Direct Numerical Simulation, we perform a numerical study of two refined convective flows: convection in a cylinder heated from below and internally heated convection in a layer. The main purpose of the study is identifying coherent structures (CS), investigating its main features and properties, and determining the turbulence archetypes using the anisotropy invariant map (AIM). We show that, in both configurations considered, CS takes place. In a cylinder, CS is a single large-scale vortex that can rotate azimuthally in non-titled container, but is almost “fixed” in the case of slightly tilted cylinder; in a layer, CS is a quasi-2D vortex, which can arise, exist for some time, disrupt, and then re-emerge again in the orthogonal direction. Nevertheless, the turbulence archetypes represented by the AIM are quite similar for both cases, and there are the distinct CS fingerprints on AIM.

Observation of spin-space quantum transport induced by an atomic quantum point contact

Quantum transport is ubiquitous in physics. So far, quantum transport between terminals has been extensively studied in solid state systems from the fundamental point of views such as the quantized conductance to the applications to quantum devices. Recent works have demonstrated a cold-atom analog of a mesoscopic conductor by engineering a narrow conducting channel with optical potentials, which opens the door for a wealth of research of atomtronics emulating mesoscopic electronic devices and beyond. Here we realize an alternative scheme of the quantum transport experiment with ytterbium atoms in a two-orbital optical lattice system. Our system consists of a multi-component Fermi gas and a localized impurity, where the current can be created in the spin space by introducing the spin-dependent interaction with the impurity. We demonstrate a rich variety of localized-impurity-induced quantum transports, which paves the way for atomtronics exploiting spin degrees of freedom.

Calling to Complain: An Ethnographic and Conversation Analytic Account of Complaints to an Industry Ombudsman

<p>Although the term complaining represents an ostensibly straightforward behaviour, it has come to obtain a range of meanings within academic and commercial works which have directed research toward understanding the behaviour and attempting to improve the way that it is undertaken, particularly in commercial environments where complaint handling constitutes an important field of commercial practice for many firms. It is proposed in this thesis that such variation in the way that complaining is approached is problematic, as it is treated ways that frequently underemphasise the fundamental point that it is overwhelmingly conducted in interpersonal interactions using language as its primary vehicle (Edwards, 2005). This thesis offers an approach to complaint handling and complaining that eschews such approaches in favour of an empirically grounded account based on the principles of ethnographic analysis, conversation analysis, and discursive psychology. Through investigating the complaint handling procedures as practiced by employees in an institution expressly dedicated to the receipt of complaints and enquiries from customers by employing participant observation and interviews, an account of complaint handling is developed that identifies how a range of forces works to impact on the way that it is performed in an institutional environment, furnishing complaint handling with a level of detail not currently offered in managerial literature dedicated to developing the practice. Next, two research chapters present the investigation of two different aspects of complaint interactions themselves. The first of these focuses on call openings as customers and institutional agents work to align themselves to the project of the call, demonstrating varying orientations to institutional complaining as callers demonstrate their own procedures for complaining (and enquiring) which may not match the institutional prerogatives and procedures of the agents receiving the calls. The final research chapter offers an analysis of a recurrent practice in the complaint calls themselves: callers’ use of self-disclosure in the service of rendering matters as problematic and warranting complaint. This finding adds to existing discursive understandings of how complaining is done. Taken together the findings offer an alternative approach to investigating complaint handling by treating it as an indexical practice bound to local demands. This offers a detailed depiction of complaint handling and complaining ‘in situ’ that may offer researchers and commercial entities a new approach to investigating how it is that complaining is done and how, in commercial or institutional contexts, complaint handling may be improved through the methods employed in the thesis.</p>

Calling to Complain: An Ethnographic and Conversation Analytic Account of Complaints to an Industry Ombudsman

<p>Although the term complaining represents an ostensibly straightforward behaviour, it has come to obtain a range of meanings within academic and commercial works which have directed research toward understanding the behaviour and attempting to improve the way that it is undertaken, particularly in commercial environments where complaint handling constitutes an important field of commercial practice for many firms. It is proposed in this thesis that such variation in the way that complaining is approached is problematic, as it is treated ways that frequently underemphasise the fundamental point that it is overwhelmingly conducted in interpersonal interactions using language as its primary vehicle (Edwards, 2005). This thesis offers an approach to complaint handling and complaining that eschews such approaches in favour of an empirically grounded account based on the principles of ethnographic analysis, conversation analysis, and discursive psychology. Through investigating the complaint handling procedures as practiced by employees in an institution expressly dedicated to the receipt of complaints and enquiries from customers by employing participant observation and interviews, an account of complaint handling is developed that identifies how a range of forces works to impact on the way that it is performed in an institutional environment, furnishing complaint handling with a level of detail not currently offered in managerial literature dedicated to developing the practice. Next, two research chapters present the investigation of two different aspects of complaint interactions themselves. The first of these focuses on call openings as customers and institutional agents work to align themselves to the project of the call, demonstrating varying orientations to institutional complaining as callers demonstrate their own procedures for complaining (and enquiring) which may not match the institutional prerogatives and procedures of the agents receiving the calls. The final research chapter offers an analysis of a recurrent practice in the complaint calls themselves: callers’ use of self-disclosure in the service of rendering matters as problematic and warranting complaint. This finding adds to existing discursive understandings of how complaining is done. Taken together the findings offer an alternative approach to investigating complaint handling by treating it as an indexical practice bound to local demands. This offers a detailed depiction of complaint handling and complaining ‘in situ’ that may offer researchers and commercial entities a new approach to investigating how it is that complaining is done and how, in commercial or institutional contexts, complaint handling may be improved through the methods employed in the thesis.</p>

Digital brain: Model-based framework for dependable electroencephalogram sensing and actuation in internet of things system

<p>Real-time brain internet of thing (IoT) frameworks are expensive. But, creating a cheaper framework has been quickened incredibly by the superior investigation that's being done on virtual brain. The passing of an imperative individual on a mystery mission is considered delicate data and must be taken care of with as much security as conceivable. By guaranteeing this discreteness, the time taken for the message of their passing to reach the pertinent specialist is expanded to up to a few days. The time taken to provide the message is as well. These days, the advancements in equipment expanding the capacities of the virtual brain and of the wearable brain IoT sensors have made the advancement of various unused program systems conceivable for engineers to make valuable applications that combine the human brain with IoT. Different tactile pathways are too empowered for communications of the human brain with bigger measured data. The fundamental point of this extend is to transfer secret records onto the clouds safely.</p>

LINGUISTIC APHORISMS AS THE MEANS OF IMPROVEMENT OF THE FUTURE PHILOLOGISTS’ LINGUISTIC COMPETENCE

In the modern educational paradigm, special attention is paid to the preparation of future specialists based on the competency approach. The fundamental point of the process of professional training of students-philologists is linguistic competency as the integrated quality that includes a number of central characteristics. It is formed in the course of mastering the linguistic disciplines provided by the curriculum. Linguistic aphorisms that represent particular features of philological terms and notions in figurative form can be a significant supplement to the studied theoretical and practical material.The article deals with the essence of the notion of “linguistic competence” and its components. Taking into account the fact that linguistic competence is integral by itself, the following sub-competencies are distinguished: phonetic, orthoepic, graphic, orthographic, lexico-phraseological, lexicographic, and grammatical (its components include morphological and syntactical), punctuation and stylistic The content of each sub-competency as a linguistic subsystem has been defined in the article. Linguistic aphorisms, analyzed in the paper, represent philological notions and phenomena that are studied during the formation of every mentioned sub-competency. The interpretation of linguistic units through aphorisms is subjective, as their authors are mostly writers, scholars and philosophers. Linguistic aphorisms as individual authorial utterances cannot be treated as the ultimate source of information but rather assist in comprehending the essence of a particular linguistic phenomenon through figurative associations from the new perspective and serve as the means of its additional semantization. Having a didactic character, aphorisms can be used for educational purposes as a means of improving the linguistic knowledge of future philologists. Keywords: linguistic competency; sub-competency; linguistic aphorisms; individual authorial utterances; linguistic terms and notions; figurative associations; professional training; language personality; students-philologists.

RESULTS OF MATHEMATICAL SIMULATION OF RELIABILITY OF PROJECTED SATELLITE COMMUNICATION STATIONS ON MOBILE OBJECTS

Современные сложные радиотехнические комплексы и системы входят в состав ракетно-космических, авиационных, сухопутных, морских изделий, обеспечивающих решение задач повышения обороноспособности и безопасности РФ, а также отвечающих интересам гражданских потребителей. При этом на этапе проектирования радиотехнических комплексов и систем закладываются требуемые расчетные параметры по надежности, безопасности, долговечности, технологичности в целях обеспечения требуемого срока их эффективного функционирования для решения поставленных целевых задач. Рассмотрены результаты математического моделирования надежности проектируемых станций спутниковой связи на подвижных объектах (космические аппараты, беспилотные летательные аппараты, автомобили, железнодорожные поезда), которые отражают методический подход к определению надежности комплекса или системы верхнего уровня. Принципиальным моментом является возможность определения числовых значений данного показателя еще на этапе составления тактико-технических (технических) заданий на выполнение НИОКР, проведения аванпроекта, т.е. тех этапах работ, на которых цена ошибки не является существенной и имеется принципиальная возможность внести изменения в конструктивные и схемотехнические параметры разрабатываемых радиотехнических комплексов и систем Modern complex radio communication and systems are part of rocket-space, aviation, dry-track, marine products that provide the solution of tasks both to increase the defense and safety of the Russian Federation and meet the interests of civilian consumers. At the same time, at the stage of design of radio engineering complexes and systems, the required design parameters for reliability, safety, durability, technological and technical support are laid in order to ensure the required period of their effective functioning to solve the set target tasks. This article considers the results of mathematical modeling of reliability of projected satellite communication stations on mobile objects (spacecraft, unmanned aerial vehicles, cars, railway trains), which reflect the methodological approach to determine the reliability of the complex or upper-level system. A fundamental point is the possibility of determining the numerical values of this indicator even at the stage of compiling tactical and technical (technical) tasks for R&D, conducting an advance project, i.e. those stages of work at which the error price is not significant and there is a fundamental possibility to make changes to the design and schematic parameters of the developed radio systems and systems

Intellectual talent of higher education seekers: theoretical principles

From the theme: a retrospective analysis of the concepts of "gifted and intellectually talented personality"; we analyzed the experience of working with gifted young people abroad. In particular, a set of theoretical methods was used: comparison, analysis, synthesis and generalization; empirical methods: analysis of documentation and results of pedagogical activity, observation . The characteristics of working with talented young students were revealed through analysis of teaching, methodological and practical work with gifted students. An empirical study was carried out to determine the attitude of gifted young people towards organizational ways of working with them and a scientific circle was developed. The results revealed that the organization of pedagogical work is a fundamental point to provoke the development of their competencies, the explicit ones and those that are latent.