Publications

This concise book provides a survival toolkit for efficient, large-scale software development. Discussing a multi-contextual research framework that aims to harness human-related factors in order to improve flexibility, it includes a carefully selected blend of models, methods, practices, and case studies. To investigate mission-critical communication aspects in system engineering, it also examines diverse, i.e. cross-cultural and multinational, environments.

This book helps students better organize their knowledge bases, and presents conceptual frameworks, handy practices and case-based examples of agile development in diverse environments. Together with the authors’ previous books, "Crisis Management for Software Development and Knowledge Transfer" (2016) and "Managing Software Crisis: A Smart Way to Enterprise Agility" (2018), it constitutes a comprehensive reference resource that adds value to this book.

This book addresses the challenges and opportunities of contemporary and future development of Eurasia. The main theme of the first part of the book is examining the reaction evoked in different countries by the Chinese “Belt and Road Initiative.” The second part analyses other national and international integration and infrastructure projects in Eurasia. This unique publication brings together in one volume works by leading researchers from different countries, all united by their common interest in the political and economic processes unfolding in the Eurasian continent. By offering various points of view from experts from all over the world, this book provides a multi-dimensional analysis of the Eurasian future and will be of value to a wide range of readers, including scholars, publicists, the international business community and decision-makers.

The book is the result of an extensive research conducted by professors of five academic institutions from Brazil, Russia, India, China and South Africa - the BRICS countries. The purpose of this work is to analyze the anti-corruption and anti-money laundering legislation in each of these countries, showing the similarities and differencies in terms of domestic legal frames and the international guidelines.

This third edition of Moral Constraints on War offers a principle by principle presentation of the ethics of war as is found in the age-old tradition of the Just War. Parts one and two trace the evolution of Just War Theory, analyzing the principles of jus ad bellum and jus in bello: the principles that determine the conditions under which it is just to start a war and then conduct military operations. Each chapter provides a historical background of the principle under discussion and an in-depth analysis of its meaning. More so than in the previous editions, there is a special focus on the transcultural nature of the principles. Besides theoretical clarifications, each of the principles is also put to the test with numerous historical and contemporary examples. In Part three, Just War Theory is applied in three specific case studies: the use of the atomic bomb against Japan in World War II, the Korean War (1950-53), and the use of armed drones in the "war on terror." Bringing together an international coterie of philosophers and political scientists, this accessible and practical guide offers both students of military ethics and of international relations rich, up-to-date insights into the pluralistic character of Just War Theory.

This is the third book in a series on Medieval Novgorod and its surroundings and deals with a substantial body of animal bones that have been recovered over the last decade. The zooarchaeological evidence is discussed by the editor and a number of English and Russian specialists who dug the site, looking at domestic exploitation of animals, diet, animal husbandry, and butchery practices. Detailed data sets are provided to enable the reader to make comparisons with their own research, but the book is also suitable for those with a more general interest in Medieval Russian archaeology.

This book discusses important topics for engineering and managing software startups, such as how technical and business aspects are related, which complications may arise and how they can be dealt with. It also addresses the use of scientific, engineering, and managerial approaches to successfully develop software products in startup companies. The book covers a wide range of software startup phenomena, and includes the knowledge, skills, and capabilities required for startup product development; team capacity and team roles; technical debt; minimal viable products; startup metrics; common pitfalls and patterns observed; as well as lessons learned from startups in Finland, Norway, Brazil, Russia and USA. All results are based on empirical findings, and the claims are backed by evidence and concrete observations, measurements and experiments from qualitative and quantitative research, as is common in empirical software engineering. The book helps entrepreneurs and practitioners to become aware of various phenomena, challenges, and practices that occur in real-world startups, and provides insights based on sound research methodologies presented in a simple and easy-to-read manner. It also allows students in business and engineering programs to learn about the important engineering concepts and technical building blocks of a software startup. It is also suitable for researchers at different levels in areas such as software and systems engineering, or information systems who are studying advanced topics related to software business.

This book constitutes the proceedings of the 8th International Conference on Analysis of Images, Social Networks and Texts, AIST 2019, held in Kazan, Russia, in July 2019.

The 24 full papers and 10 short papers were carefully reviewed and selected from 134 submissions (of which 21 papers were rejected without being reviewed). The papers are organized in topical sections on general topics of data analysis; natural language processing; social network analysis; analysis of images and video; optimization problems on graphs and network structures; analysis of dynamic behaviour through event data.

This groundbreaking volume reassess the philosophical trajectory of German Idealism and its aftermath from a political-theological perspective. Over the course of the volume, German Idealism emerges as a crucial phase in the genealogy of political theology and an important point of reference for the ongoing reassessment of modernity and secularity.

The Festschrift containing 37 contributions celebrates the scholarly achievements of the two outstanding Assyriologists, Walter Sommerfeld (University of Marburg) and Manfred Krebernik (University of Jena). The primary focus of the volume corresponds to the main topics of interests of Professors Sommerfeld and Krebernik – Pre-Sargonic and Sargonic Mesopotamia and third millennium Syria. The volume also features a few contributions dealing with Sumerian language, Mesopotamian literature and the early history of Akkadian and its Semitic background.

Настоящее учебное пособие предназначено для  обучения академическим навыкам письма и подготовки к сдаче международного экзамена IELTS по аспектy «Академическое письмо».  

Целью пособия является формирование и закрепление академических навыков, необходимых для создания  англоязычных текстов учебной и научной направленности на микро и макроуровнях. Пособие направлено  на формирование компетенций, необходимых для использования английского языка в учебной, научной, и профессиональной деятельности. Пособие включает разделы, посвященные особенностям написания параграфа, изучения структуры академического эссе, а также эссе формата международного экзамена IELTS.

Материал пособия рекомендуется использовать для аудиторной и самостоятельной работы  студентов. Пособие может быть полезно студентам преподавателям  вузов,  а также для всех желающих приобрести академические навыки письма на английском языке.

 ‘English for IT Studies in Higher Education’, is a collection of eight lessons based on a selection of TED talks about IT issues. The selected TED talks not only enhance the learners’ English language proficiency but also develop the learners’ professional competencies and expand their outlook by acquainting them with the latest applications of computers in various fields of our daily life. All the lessons have a regular structure and include exercises for developing vocabulary, listening, reading, speaking, note-taking and writing skills. A quick test has been developed for each lesson checking the student’s assimilation of the material. The book can be used both for classroom activities and for independent work. It will be of interest to an international readership, especially for ESP instructors and university teachers and students studying English as a foreign language.

This book introduces a 'Big History' perspective to understand the acceleration of social, technological and economic trends towards a near-term singularity, marking a radical turning point in the evolution of our planet. It traces the emergence of accelerating innovation rates through global history and highlights major historical transformations throughout the evolution of life, humans, and civilization. The authors pursue an interdisciplinary approach, also drawing on concepts from physics and evolutionary biology, to offer potential models of the underlying mechanisms driving this acceleration, along with potential clues on how it might progress.  The contributions gathered here are divided into five parts, the first of which studies historical mega-trends in relation to a variety of aspects including technology, population, energy, and information. The second part is dedicated to a variety of models that can help understand the potential mechanisms, and support extrapolation. In turn, the third part explores various potential future scenarios, along with the paths and decisions that are required. The fourth part presents philosophical perspectives on the potential deeper meaning and implications of the trend towards singularity, while the fifth and last part discusses the implications of the Search for Extraterrestrial Intelligence (SETI). Given its scope, the book will appeal to scholars from various disciplines interested in historical trends, technological change and evolutionary processes. 

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This book presents the main findings of a study on school learning environments and student outcomes, which the World Bank conducted in 2019 in three regions of the Russian Federation. Using data collected through the OECD School User Survey and the pilot “Trends in Mathematics and Science Study” (TIMSS), the book analyzes how a school’s infrastructure and learning environment may affect the progress and success of students in math and science. It also delves into teaching practices, analyzing their impact on learning and highlighting the important nexus between learning environments and teaching methods. The book concludes by recommending areas in which focused attention by educational authorities could improve educational policy and help maintain high-quality learning environments. The book will be useful for educators, school principals, architects, and policy makers who are involved in school infrastructure projects and are interested in increasing their knowledge of school design planning.

The article is devoted to the consideration of the concept of commorientes in French and Russian inheritance law. The commorientes are individuals, entitled to inherit, reciprocally, to each other and considered to have died at the same moment, from the inheritance’s point of view. The commorientes do not inherit reciprocally. The work focuses on how French and Russian law determine the notion of commorientes. Inheritance rules, regarding the commorientes in France and Russian Federation from the beginning of the 19th century are analysed; subsequently, their current versions in force in the French Civil Code and the Russian Federation Civil Code are compared. Particular attention is paid to the issue of the time of the inheritance opening. In the Russian legislation this issue has not been unambiguously resolved for a long time. The article presents the evolution of the Russian and French rules on inheritance after the commorientes. In French law, presumptions of survival have been in effect for many years, allowing to determine the sequence of deaths of people who died as a result of the same event. The article contains the rules of the current legislation in France and in the Russian Federation, as well as suggestions for their improvement.

Over the past thirty years, optimization modeling techniques have begun to be actively used in supply chain planning and management. Given the specifics of planning tasks in supply chains, linear programming and its methods such as dynamic programming, stochastic programming and scenario planning have become the most popular. These methods make it possible to optimize the supply chain across numerous databases, each of which corresponds to a scenario describing different options for development in an uncertain future. Despite quite intensive research in this area, dynamic and stochastic programming is still underused by managers to solve application tasks in various fields, including supply chain management. Hence, there is a need for development of new planning models in logistics and supply chain management in the context of incomplete information and methods that are used to investigate situations of risk and uncertainty.

The article presents the possibility of obtaining polymer composite materials based on thermoplastic polyimide and tungsten oxide (WO3) modified with a hydrophobic silicone fluid. Data on surface microscopy, Vickers microhardness, density, and thermal stability of composites with different tungsten oxide contents are presented. As a result of modifying tungsten oxide, its surface becomes hydrophobic, and the contact angle increases from 31° to 101°. The microstructure of the surface of composites has a fine-grained structure without microcracks and chips. The lowest density material has no filler. With increasing filler content, the density increases. When the content of the filler is 80 wt %, the density is 4.35 g/cm3. The optimum content of tungsten oxide filler is 60 wt % as measured by the surface microhardness. The work shows that the introduction of the proposed filler significantly increases the heat resistance of polyimide. Pure polyimide is stable up to 425°С, and at a temperature of 680°С, its full thermal decomposition takes place. With increasing content of modified tungsten oxide in the composite, the rate of mass loss decreases. In the composite containing 60 wt % filler at 680°C, the mass loss is 38%.

Hybrid membranes were prepared by incorporating silica with propyl-imidazoline groups in polybenzimidazoles (phthalide-containing PBI or PBI based on 2,6- or 2,5-pyridinedicarboxylic acids). The influence effects of the silica precursor hydrolysis conditions on the conductivity of the hybrid membranes are studied. Ionic conductivity, water uptake, phosphoric acid doping, and gas permeability of the obtained materials were found to depend on the preparation method and the silica loading. The materials with 10 wt% of functionalized silica present the highest conductivity. A decrease of hydrogen permeability is observed for low silica loadings.

Using the integral transformation, the field-theoretical Hamiltonian of the statistical field theory of fluids is obtained, along with the microscopic expressions for the coefficients of the Hamiltonian. Applying this approach to the liquid-vapor interface, we derive an explicit analytical expression for the surface tension in terms of temperature, density and parameters of inter-molecular potential. We also demonstrate that a clear physical interpretation may be given to the formal statistical field arising in the integral transformation – it may be associated with the one-body local microscopic potential. The results of the theory, lacking any ad-hoc or fitting parameters are in a good agreement with available simulation data.

This paper focuses on the cognitive foundation of the semantics of English adjectives that denote mental and moral characteristics of human beings. Research into these adjectives seems a challenging task because they denote abstract qualities that cannot be perceived through vision, hearing, or touch; and here a question arises: How are abstract qualities interpreted in English encoded through adjectives? To answer it, this study follows the idea of two-level semantics, i.e. word semantics is treated as a two-level phenomenon that comprises the semantic (external) level and the conceptual (deep) one. This study is the first to address adjectival semantics from this perspective. Here a novel approach to revealing the cognitive foundation of adjectives is introduced: given that adjectives originated from old syncretic items and a word cognitive model forms at the moment of word creation, cognitive models underlying adjectives' semantics are unearthed via analysis of their etymological data. Our contribution is two-fold. First, the approach has revealed that the image schema CONTAINER guides semantics of an array of various adjectives independent of their morphemic structure or date of origin. The examples demonstrate that abstract human qualities are interpreted via the following container features: boundary, container substance, size, hardness/softness of a container shell, etc. The semantics of affixed or compound adjectives appear to stem from the integration of concepts represented by an affix and a root or two roots, respectively. Second, the findings show that the value given to every container feature appears to predetermine the evaluation conveyed by an adjective. Container features tend to possess ambivalent value, realizing the positive or negative one due to the interaction with a frame in which the CONTAINER is incorporated, therefore the same polysemantic adjective may develop both positive and negative meanings. To reveal the whole inventory of cognitive models that govern adjectival semantics in English, further research needs to be conducted.

Concept mapping is a popular tool for knowledge structure assessment. In recent years, both the amount of research about concept maps and their measurement ability have grown. It has been shown that concept maps with different types of tasks, for instance, links between concepts given or selected by a respondent, provide information about the different aspects of students’ knowledge structure. This study explores features of concept mapping with and without a list of concepts. At first, eleven masters students constructed concept maps with a topic on statistical data analysis and, after three weeks, repeated the task with the same topic and a predefined list of concepts. Both types of concept maps were evaluated using traditional scoring indicators and indicators from the network analysis. All indicators were tested for significant differences, and then the content of these maps was analysed. Results show that the list of concepts forced respondents to construct more connective maps, which is related to a more developed knowledge structure. Moreover, it is easier for them, when including even abstract concepts, to define their role in the domain. However, respondents use concepts and group them in different ways depending on the instruction. It seems that respondents feel a “list stress”, which leads to differences in the content. These findings demonstrate the possibilities of using different concept mapping tasks for learning and assessment.

Non-profit organizations deliver a wide range of meaningful resources to communities in such diverse areas as education, arts, culture, medicine, social service and others. However, as compared to the private sector, their funding potential is much more limited. Increasing social and economic impact of the non-profit sector is a reason why there is a need in persistent efforts to enhance these opportunities. State contracts have a good potential to be regarded as one of the most essential sources of funding for non-profit organizations in the social sphere. Recently passed laws ensure substantial benefits for socially oriented non-profit organizations when participating in public procurement. Nevertheless, despite existence of norms allowing socially oriented NPOs to get preferences in tenders, presence of the non-profit sector in Russian public procurement market is still insignificant. The study seeks to analyze peculiarities of Russian public procurement legislation. Another purpose of the study is to investigate barriers to   functioning of Russian NPOs in the public procurement market.  The major question of the study to be asked is the following: why did the state order fail to become one of the drivers for the development of the non-profit sector in Russia? First, we consider the functioning mechanisms of socially oriented NPOs in the public procurement market. Then, we analyze the results of the expert interview, which let us identify the following barriers limiting participation of NPOs in public procurement: economic, financial, social and organizational barrier. Finally, we make a conclusion that for the majority of non-profit organizations state order is an optional source of funding in view of the identified barriers, and make recommendations on attracting socially oriented NPOs in the field of public procurement. The study is relevant for the government and public authorities, since it can serve as a starting point for improving the mechanisms of attracting the non-profit sector in the sphere of public procurement.

Topic modeling is a popular technique for clustering large collections of text documents. A variety of different types of regularization is implemented in topic modeling. In this paper, we propose a novel approach for analyzing the influence of different regularization types on results of topic modeling. Based on Renyi entropy, this approach is inspired by the concepts from statistical physics, where an inferred topical structure of a collection can be considered an information statistical system residing in a non-equilibrium state. By testing our approach on four models—Probabilistic Latent Semantic Analysis (pLSA), Additive Regularization of Topic Models (BigARTM), Latent Dirichlet Allocation (LDA) with Gibbs sampling, LDA with variational inference (VLDA)—we, first of all, show that the minimum of Renyi entropy coincides with the “true” number of topics, as determined in two labelled collections. Simultaneously, we find that Hierarchical Dirichlet Process (HDP) model as a well-known approach for topic number optimization fails to detect such optimum. Next, we demonstrate that large values of the regularization coefficient in BigARTM significantly shift the minimum of entropy from the topic number optimum, which effect is not observed for hyper-parameters in LDA with Gibbs sampling. We conclude that regularization may introduce unpredictable distortions into topic models that need further research.

This study examines territorial differences in Russian students' choice of educational trajectory after secondary school between 2000 – 2014, between regions in various socio-economic and cultural contexts. The Russian case might be interesting for the social and economic gap between Russian provinces, which is comparable to other countries differences: some regions, equal to Singapore or the Netherlands in GDP per capita, while others are similar to Honduras or Bolivia. These differences in economic development, among other things, are also associated with the gap in human capital, which is traditionally measured through the level of education of the population. In the Russian system of education, the actual choice of educational trajectory takes place at the end of secondary school, when children should choose between the academic track, which presumes admission to the high school and university after that, and the vocational track, which includes admission to vocational college. Since 2000th, the proportion of secondary school graduates, who chose the academic trajectory, has declined in most of the Russian regions, despite growing access to higher education, thanks to the raise in the number of universities between 2000-2008 with simultaneous demographic decline. With the dynamic time warping algorithm and time series cluster analysis, six different types of regional situations were identified, in the dynamics of the percentage of students who chose the academic track after secondary school. In general, in the most economically advantaged regions with a developed infrastructure of higher education, the popularity of the academic trajectory remains at the same high level. But also there were some decreases in 2009 and 2013, which could be a consequence of the world economic crises in those years. These crises became additional factors at the regional level, for the families in the more developed territories, to re-evaluate their children's chances for higher education and the associated costs. At the same time, the proportion of students on the academic track in more economically disadvantaged regions, with lower access to higher education, has gradually decreased since 2000. These students faced a “double penalty” because they had to plan their education strategy, taking into account higher competition for places in universities, or moving to other regions to enter educational institutions there, which was also associated with growing costs. In this situation, the vocational track becomes a more affordable alternative for students from regions with a lower level of economic and social development. As the result of the analysis, it is possible to determine short and long term prerequisites for further growth in the human capital gap between Russian regions and, consequently, the growing differences in economic development.

This is an expanded version of the talk by the author at the conference Polynomial Rings and Affine Algebraic Geometry, February 12--16, 2018, Tokyo Metropolitan University, Tokyo, Japan. Considering a local version of the Zariski Cancellation Problem naturally leads to exploration of some classes of varieties of special kind and their equi-variant versions. We discuss several topics inspired by this exploration, including the problem of classifying a class of affine algebraic groups that are naturally singled out in studying the conjugacy problem for algebraic subgroups of the Cremona groups.

In this work, a new algorithm was developed for calculating the fourpoint water model TIP4P on graphics accelerators. It was designed as a part of the flexible molecular dynamics modeling package LAMMPS in the library module “GPU”. In this paper we describe two approaches to implement the TIP4P model for GPU: 1) to divide the related computations between CPU and GPU; 2) to compute the interaction fully on the GPU. We verify the program, benchmark and profile it. The achieved speedup of interaction computation is about x7, acceleration of the entire calculation of about 55%.

The article presents the energy consumption and efficiency analysis based on the data from three small-size supercomputers installed in JIHT RAS. One system is the air-cooled hybrid supercomputer Desmos with AMD FirePro GPUs and two others are the air-cooled and liquid-cooled segments of the supercomputer Fisher based on AMD Epyc Naples CPUs. To collect data, we implement the same real-time analytics infrastructure on all three supercomputers. We consider classical molecular-dynamics problem as a benchmarking tool. Our results quantify the energy savings that are provided by the GPU-based calculations in compariso with CPU-only calculations and by liquid cooling in comparison with air-cooling. During strong scaling benchmarks, we detect an interesting minimum of energy consumption in the CPU-only case.

The author presents outcomes of academic research on anti-money laundering in Russia conducted as a part of the comparative study on anti-money laundering and anti-corruption in the BRICS countries.

The author presents the outcomes of academic research on anti-corruption legal framework in the Russian Federation conducted as a part of comparative study on anti-corruption legal framework in the BRICS countries. Special attention is paid to implementation of anti-corruption compliance in Russian organizations. 

We consider the notion of information distance between two objects x and y introduced by Bennett, Gács, Li, Vitanyi, and Zurek [C. H. Bennett et al., 1998] as the minimal length of a program that computes x from y as well as computing y from x, and study different versions of this notion. In the above paper, it was shown that the prefix version of information distance equals max (K(x|y),K(y|x)) up to additive logarithmic terms. It was claimed by Mahmud [Mahmud, 2009] that this equality holds up to additive O(1)-precision. We show that this claim is false, but does hold if the distance is at least logarithmic. This implies that the original definition provides a metric on strings that are at superlogarithmically separated.

This chapter summarizes the issues of emigration from the countries that formed the Commonwealth of Independent States immediately after the breakup of the USSR some 25 years ago, to non-CIS countries. It is based on various statistical sources from host countries and migration databases of international organizations (Eurostat, OECD, UN Population Division, UNESCO, UNHCR). The scale of emigration from the former Soviet republics was massive. There were two emigration periods, each having its own geography, intensity, and reasons. The emigration outflow was strongest in the 1990s. Its size and geography were largely determined by the repatriation movement of Germans, Jews, Greeks, and economic and political consequences of the breakup of the USSR. In the 2000s, the geography of emigration from the CIS expanded and become in line with global mobility trends. As a result, new migrant communities emerged in many countries. Permanent residents from post-Soviet countries are especially numerous in Germany, Israel, the USA and Italy.

During many years Tajikistan has been the world leader in terms of the ratio of remittances to GDP. Late 2000s and early 2010s were the years of migration boom when the country’s dependence on financial streams from migration was established and the effects of migration started being evident. Much of these effects were driven by the characteristics of migrants and their households and the context of the country. This chapter reviews recent evidence on the effects that migration has on the lives of households in Tajikistan. Using data from a panel household survey, this chapter describes migrants’ profile and factors of migration decision with a special focus on migrant skills and their households’ wealth.

We compute the spaces of sections of powers of the determinant line bundle on the spherical Schubert subvarieties of the Beilinson- Drinfeld affine Grassmannians. The answer is given in terms of global Demazure modules of the current Lie algebra.

Does education promote support for liberal economic views? We show in a large cross-section of countries that in almost all cases those with higher educational attainment are more pro-market and less sympathetic to economic regulation than those who have less formal education. This is true in countries with high support for markets and in those with high distrust of markets and strong support for government regulation. Fixed-effect models show that respondents’ education is negatively related to support for state economic activities. When considering Russian micro data, we observe that whether we confine ourselves to older people educated in the Soviet period or compare the results to a sample from the post-Soviet generation, we consistently find that those with more education are relatively less supportive of market regulation. Different models also show that parental education is a positive predictor of pro-market values.

Hardly any literature exists on the relationship between equivalence scales and poverty dynamics for transitional countries. We offer a new study on the impacts of equivalence scale adjustments on poverty dynamics for Russia, using the equivalence scales constructed from subjective wealth and more than 20 waves of household panel survey data from the Russia Longitudinal Monitoring Survey. Our analysis suggests that the equivalence scale elasticity is sensitive to household demographic composition. The adjustments for the equivalence of scales result in lower estimates of poverty lines. We decompose poverty into chronic and transient components and find that chronic poverty is positively related to the adult scale parameter. Chronic poverty, however, is less sensitive to the child scale factor compared to the adult scale factor. Interestingly, the direction of income mobility might change depending on the specific scale parameters that are employed. Our results are robust to different measures of chronic poverty, income expectations, reference groups, functional forms, and various other specifications

In this paper, we study convergence in per capita gross regional products across Russian regions in the period from 1996 to 2017. To this purpose, we estimate growth equations, which are directly derived from a neoclassical growth model, augmented with human capital and migration. To our knowledge, this is the first paper that explicitly applies a neoclassical model to analyze regional convergence process in the Russian case. We also take into account possible spatial effects and do a series of other robustness checks. Our main estimates establish a convergence rate of around 2% per year. While we fail to find any role of human capital for regional economic growth, we find that interregional migration and interdependencies of the growth experience of Russian regions contribute to economic convergence between them.

At the turn of the XIX – XX centuries scientists focused on the procedure of the dissertation research’s scientifically verifications, create expert forms for assessing the quality of scientific work. One of these procedural forms became peer review. The article examines the culture of dissertation reviews at Russian universities in the designated period. The author, using an examples from specific texts of reviews, focuses on the formation of conventions, on criteria for assessing the quality of research, identifies the basic requirements for the degree of scientific texts. The main conclusion of the article is that the assessment texts contributed to the conclusion of academic agreements and their maintenance (retention).

We propose a system of fermionic screening fields depending on a continuous parameter b, which defines eta-deformed OSp(n|2m) sigma-model in the limit b to infinity and a super-renormalizable QFT in b to 0. In the sigma-model regime  we show that leading UV asymptotic of the one-loop RG group flow equations coincides with perturbation around Gaussian theory. In perturbative regime b to 0 we show that the tree level two-particle scattering matrix matches the expansion of the trigonometric OSp(n|2m) R-matrix.

We review the applications of the Quantum Spectral Curve (QSC) method to the Regge (BFKL) limit in N=4 supersymmetric Yang-Mills theory.  QSC, based on quantum integrability of the AdS_5/CFT_4 duality, was initially developed as a tool for the study of the spectrum of anomalous dimensions of local operators in the N=4 SYM in the planar, N_c to infinity limit.  We explain how to apply the QSC for the BFKL limit, which requires non-trivial analytic continuation in spin S and extends the initial construction to non-local light-ray operators. We give a brief review of high precision non-perturbative numerical solutions and analytic perturbative data resulting from this approach. We also describe as a simple example of the QSC construction at the leading order in the BFKL limit. We show that the QSC substantially simplifies in this limit and reduces to the Faddeev-Korchemsky Baxter equation for Q-functions.   Finally, we review recent results for the  Fishnet CFT, which carries a number of similarities with the Lipatov's integrable spin chain for interacting reggeized gluons.

Financial losses due to low demand for parking spaces in garages at residential estates is a key motivation for this research. The purpose of this paper in particular is to statistically explore the relationship between parking occupancy rates and various factors on transport supply, characteristics of location and the building. The occupancy rate of parking was measured as the ratio of actual number of cars to total number of parking spaces. The fieldwork on counting occupied parking spaces was conducted 2 times per day during a week on a sample of 13 locations in different areas of a 1.4-million Yekaterinburg city in Russia. 4700 observed parking spaces give sample size of 173 records. Statistical analysis shows that the crow-fly distance to the city center as well as the number of public transport stops are strongly associated with occupancy rate for parking. Also, occupancy rate is much more affected by the type of parking ownership. Private owning means purchase of a parking space or renting it while public ownership suggests free access. So private parking means a 45% decline in occupancy compared to the public parking regime. Research provides empirical results and some theoretical underpinnings are also highlighted.

The cross-national comparability of testing results is one of the main concerns associated with international assessment. One way to approach this concern is the theoretical framework of cross-national comparability. One such framework, proposed by Van de Vijver and Tanzer [1997], describes the bias in item meaning across countries and the bias in terms of test administration procedures and respondent behavior across countries. To study how items function in terms of respondent behavior and in terms of their psychological meaning, we introduce the concept of time-related differential item functioning (DIF). This concept is similar to traditional DIF but describes the incomparable time parameters of items across countries rather than item difficulty parameters. We discuss time-related DIF, referencing dual processing cognitive theory and illustrate how it limits the interpretability of a certain type of time-related DIF. We also demonstrate the analysis with real data, and discuss the difference introduced by response time information in parameter interpretation and modelling results.

We explore whether a root lattice may be similar to the lattice $\mathscr O$ of integers  of a number field $K$ endowed with the inner product $(x, y):={\rm Trace}_{K/\mathbb Q}(x\cdot\theta(y))$, where $\theta$ is an involution of $K$. We classify all  pairs $K$, $\theta$ such that $\mathscr O$ is similar to either an even root lattice or the root lattice $\mathbb Z^{[K:\mathbb Q]}$. We also classify all  pairs $K$, $\theta$ such that $\mathscr O$ is a root lattice. In addition to this, we show that $\mathscr O$ is never similar to a positive-definite even unimodular lattice of rank $\leqslant 48$, in particular, $\mathscr O$ is not similar to the Leech lattice. In appendix, we give a general cyclicity criterion for the primary components of the discriminant group of $\mathscr O$.

This research studies the role of culture in reproducing inequality through educational decision-making (VE) students in Russia. We show how the way they meaningfully map their options affects their decisions and outcomes. We built upon the conceptual approach of Hodkinson, specifically “horizons of action” in studying how young people are restricted by the “horizon of action” in their opportunities to see all the options available to them. We expand Hodkinson’s approach by suggesting that the “horizon of action” is a symbolic structure that renders reality as a meaningful frame of reference which is the result of meanings shaping young people’s outlook. Using this approach, we extract four complexes of meanings which we call “symbolic logics”. We investigate further how “serendipity” and “agency” are woven into young people's symbolic logics of choice. We show that students rely on a meaningful frame that allows them to be agents enacting a narrative of “bringing adulthood closer”, but they are also highly uncertain about their future and are open to serendipity which plays a large role in their trajectories.

It is well-known that quasi-one-dimensional superconductors suffer from the pairing uctuations that signicantly reduce the superconducting temperature or even completely suppress any coherent behavior. Here we demonstrate that a coupling to a robust pair condensate changes the situation dramatically. In this case the quasi-one-dimensional system can be a high temperature supercon- ductor governed by the proximity to the Lifshitz transition at which the Fermi level approaches the lower edge of the single-particle spectrum.

This research explores the relation between labor mobility in pre-retirement and retirement ages and further employment in old age in Russia. Older workers often face the challenge of keeping their job due to impaired health, age discrimination, and other factors. Job change can be a potential strategy to maintain employment in old age. Our study uses panel data of the Russian Longitudinal Monitoring Survey of Higher School of Economics (RLMS-HSE) for 2010–2017. Logistic regression models show that labor mobility can be an effective strategy to maintain employment in old age but only for men. Older workers are more likely to change their job if they do not have stable employment relationships and are not satisfied with their current job.

Set aside procedures in public procurement are those reserved for a sub-class of bidders, such as small and medium enterprises (SMEs) only, as a tool of the preferential treatment of SMEs by many governments. Prior studies and our results indicate these setasides reduce costs of government contracting. If they are cheaper, why should regulations enforce them, and why do so on a limited scale? Using the public database of procurement procedures in the Russian Federation, we first show that SME-focused set-aside procedures indeed attract a larger number of participants and result in a larger rebate for contracting authorities (CA), however the vast majority of CAs strictly prefer non set-aside procedures: the share of set-asides is significantly below the threshold dictated by the Russian regulation. We then turn to factors that make CAs avoid set-asides – these are regional, CA-specific and contract-specific – and relate them to uncertainty and asymmetric information problems, which may be elevated in set-asides and thus counteract the cost-reduction argument. Our findings suggest results on economic benefits of set-aside procedures should be taken with a pinch of salt, and more attention should be paid to perceived risks of procurement from SMEs.    

There is a tacit assumption that multiband superconductors are essentially the same as multigap superconductors. More precisely, it is usually assumed that the number of excitation gaps in the single-particle energy spectrum of a uniform superconductor determines the number of contributing bands in the corresponding superconducting model. Here we demonstrate that contrary to this widely accepted viewpoint, the superconducting magnetic properties are sensitive to the number of contributing bands even when the corresponding excitation gaps are degenerate and cannot be distinguished. In particular, we find that the crossover between superconductivity types I and II - the intertype regime - is strongly affected by difference between characteristic lengths of multiple contributing condensates. The reason for this is that condensates with diverse characteristic lengths coexisting in one system interfere constructively or destructively, which results in multi-condensate magnetic phenomena regardless of the presence/absence of the multigap structure in the singleparticle excitation spectrum.

People differently rank factors they see as important when making decisions with potential environmental impact. Both in a survey and theoretically, we investigate the relative importance of monetary and non-monetary factors and how and whether attitudes to uncertainty affect this ranking. Risk and ambiguity aversion explains the ranking of decision factors that involve uncertainty about future outcomes but often uncertainty is neglected: e.g. possible changes to standards and regulations are seen as a factor of uncertainty, while data manipulation by car manufacturers, as manifested in the recent Dieselgate scandal, is not seen as such. Responses in our sample overwhelmingly reject consumers’ indifference with respect to environmental issues, however when it comes to individual consumption choices, these are strongly dominated by monetary factors. Our data highlight an important role of institutions as collective commitment devices to help promote proenvironmental behaviour.