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Of all publications in the section: 3 534
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Working paper
Khoroshkin A., Willwacher T., Živković M. arxiv.org. math. Cornell University, 2014. No. 1411.2369.
We study the cohomology of complexes of ordinary (non-decorated) graphs, introduced by M. Kontsevich. We construct spectral sequences converging to zero whose first page contains the graph cohomology. In particular, these series may be used to show the existence of an infinite series of previously unknown and provably non-trivial cohomology classes, and put constraints on the structure of the graph cohomology as a whole.
Added: Dec 9, 2014
Working paper
Nazirov R., Сагдеев Р. MAX-PLANCK- INSTITUT, Preprint Series. MAX-PLANCK- INSTITUT, 1990. No. 409.
Added: Apr 1, 2013
Working paper
Valeria Ivaniushina, Alexandrov D. A. Education. EDU. Высшая школа экономики, 2013. No. 09.
This article analyzes student pro-school/anti-school attitudes on different levels and explores their relation to educational outcomes. We examine the individual level, school level, and clique level predictors (clique is defined as a tight social group within a class social network). Cliques were identified using special software called Kliquefinder. We use multi-level regression approach on a sample of 7300 students from 104 public schools from St.Petersburg. Our findings show that: 1.) Socio-economic differentiation of Russian schools does not lead to a polarization of pro-school/anti-school attitudes in different types of schools; 2.) The polarization of attitudes emerges and is maintained at the clique level; and, 3.) Clique attitudes have a significant impact on educational outcomes (net of a student’s socio-demographic characteristics and individual attitudes).
Added: Feb 28, 2013
Working paper
Kuzmina Y., Ivanova A., Antipkina I. PSYCHOLOGY. WP BRP. Издательский дом НИУ ВШЭ, 2017
The main aim of this study was to estimate direct and indirect effects of phonological ability and vocabulary knowledge on subsequent mathematics and reading performance. To achieve our goals we used two-wave longitudinal data from the international Performance Indicators in Primary Schools (iPIPS) data set, which was produced in Russia in 2015-2016. We used rhyming skills and ability to repeat words/pseudowords as indicators of phonological ability, and identified three types of mathematical skills (digit identification, number manipulations and formal math). The results of our analysis confirmed the predictive role of preschool phonological ability as a domain-general precursor of later achievements. Phonological ability had a positive direct and indirect effects on the subsequent reading and math performance. Moreover, the direct effect was higher than the indirect effect. Reading fluency mediated the effect of phonological ability and did not mediate the effect of vocabulary knowledge. Vocabulary knowledge had insignificant direct effect on math achievement and positive indirect effect via phonological ability.
Added: Aug 28, 2017
Working paper
Vernikov A. V. Munich Personal RePEc Archive. University Library of Munich, 2010. No. 21373.

This paper uses the banking industry case to show that the boundaries of public property in Russia are blurred. A messy state withdrawal in 1990s left publicly funded assets beyond direct reach of official state bodies. While we identify no less than 50 state-owned banks in a broad sense, the federal government and regional authorities directly control just 4 and 12 institutions, respectively. 31 banks are indirectly state-owned, and their combined share of state-owned banks’ total assets grew from 11% to over a quarter between 2001 and 2010. The state continues to bear financial responsibility for indirectly owned banks, while it does not benefit properly from their activity through dividends nor capitalization nor policy lending. Such banks tend to act as quasi private institutions with weak corporate governance. Influential insiders (top-managers, current and former civil servants) and cronies extract their rent from control over financial flows and occasional appropriation of parts of bank equity.

Added: Sep 3, 2012
Working paper
Smirnov S. V. Количественный анализ в экономике. WP2. Высшая школа экономики, 2011. No. 03.
The cyclical indicators approach has been used for decades but the last recession has once more rekindled an interest for them throughout the world. Several new techniques and indicators were introduced in recent years but the actual quality of these ‘newcomers‘ was not well established. During the last recession, performance of such ‘veterans’ as indexes by The Conference Board, ECRI, ISM, PhilFed, OECD, etc. has also not been checked in a comprehensive and comparable manner. Another problem with cyclical indicators is that their usage in real time has not yet been fully clarified. Contemporary global economic life is measured in days and hours, but most common economic indicators have inevitable lags of months and sometimes quarters (GDP). Is it possible for a leading indicator (which is monthly in most cases) to be timely? Moreover, the real-time picture of economic dynamics may differ in some sense from the same picture in its historical perspective, because all fluctuations receive their proper weights only in the context of the whole. Therefore, it’s important to understand whether the existing indicators are really capable of providing important information for decision-makers. In other words, could they be useful in real-time? What does the experience of the last recession tell us in this regard? This paper answers these questions for the USA as well as for Russia.
Added: Dec 26, 2012
Working paper
Lozinskaia A. M., Ozhegov E. M., Karminsky A. M. Financial Economics. FE. Высшая школа экономики, 2016. No. 55.
This paper investigates the distribution of relative credit losses given mortgage default for loans provided by a major government-sponsored creditor in a local area. We use borrower’s individual and loan-level data on residential mortgages originated in the period 2008–2012. Our numerical analysis indicates that mortgages bunching at certain Loan-to-Value ratios (LTV) led to a discontinuity in relative credit loss given mortgage default. Through regression analysis, we demonstrate discrete jumps in the approximated historical credit losses generated by loans with a high LTV ratios and find thresholds allowing the segmentation of loans according their credit risk. In addition, our results suggest that mortgage insurance is a potentially valuable instrument for compensation for expected loss in certain risk segments. 
Added: Jul 26, 2016
Working paper
Dmitri V. Vinogradov, Elena V. Shadrina. Working Paper 12-2018. Working Paper 12-2018 . University of Glasgow, 2018
Incentives are usually designed to promote desirable behaviour. In many instances, however, even in the absence of an incentive scheme, people may deliberately choose to act as desired. In such a case, introducing a system of incentives may discourage people from doing this. The discouragement mechanism works through the pos- sibility of errors that may wrongly classify the observed behaviour as undesirable, and hence trigger penalties. The effect is amplified by pessimism, which leads to an overestimation of the error probability, and by the disappointment from errors, which increases the disutility of unfair penalties. This approach is capable of ex- plaining two typical observations for enterprises/industries subject to environmental regulation – overcompliance (excessive investment in compliance) and discretionary inspections by regulators (raised frequency of inspections to enterprises suspected of non-compliance).
Added: Jan 15, 2019
Working paper
Schnittke E. Linguistics. WP BRP. НИУ ВШЭ, 2015. No. 20.
            The referential system of Middle Russian is notable for having in addition to the "standard" anaphoric devices—such as zero, pronominal, and nominal forms—devices that combine pronominal and nominal components, e.g. on knjaz' Mixajlo ‘he prince Mixajlo’, tot d'jakon Iov ‘that deacon Iov’. Traditionally, referring expressions of the type Pron+NP were regarded as typical of administrative language and functionally interpreted as satisfying the need for clarity and unambiguous identification of the referents. I show that in a selection of 17th-century texts these constructions are used independently of the disambiguation need. I argue that both compound constructions, Pron+NP and Dem+NP, function as markers of the referent's status at different levels of discourse. Specifically, participants who are major at the discourse level and thematic at the episode level tend to be encoded by means of Pron+NP, whereas participants who are thematic at the episode level but minor at the discourse level are usually encoded by means of Dem+NP. These facts are examined against the background of the history of pronouns and demonstratives in the Russian language.              
Added: Sep 28, 2015
Working paper
Svetlana Avdasheva, Dina Tsytsulina, Svetlana Golovanova et al. Public Administration. PA. Высшая школа экономики, 2015. No. 26.
Many antitrust investigations in Russia continue to present a challenge for the assessment of competition policy and international enforcement ratings. On the one hand, many infringement decisions may be interpreted as an indicator of high enforcement efforts in the context of rigid competition restrictions and the significant related harm to social welfare. On the other hand, many investigations proceed under poor legal and economic standards; therefore, the impact of decisions and remedies on competition is questionable. In fact, large number of investigations may indicate the ineffectiveness of antitrust enforcement. The article explains the possible effects of antitrust enforcement in Russia. Using a unique dataset of the appeals of infringement decisions from 2008-2012, we classify the investigated cases according to their potential impact on competition. A case-level analysis reveals that the majority of cases would never be investigated under an appropriate understanding of the goals of antitrust enforcement, restrictions on competition and basic cost-benefit assessments of agency activity. There are diverse explanations for the distorted structure of enforcement, including the incompleteness and imperfection of sector-specific regulations, rules concerning citizen complaints against the executive authorities and the incentives of competition authorities. Our analysis shows that competition agencies tend to pay more attention to the investigation of cases, which requires less input and, at the same time, results in infringement decisions with a lower probability of being annulled.
Added: Apr 3, 2015
Working paper
Mironov V., Petronevich A. BOFIT Discussion Papers. DP. Bank of Finland Institute for Economies in Transition, 2015
This paper examines the problem of Dutch disease in Russia during the oil boom of the 2000s, from both the theoretical and empirical points of view. Our analysis is based on the classical model of Dutch disease by Corden and Neary (1982). We examine the relationship between changes in the real effective exchange rate of the ruble and the evolution of the Russian economic structure during the period 2002 - 2013.  We empirically test the main effects of Dutch Disease, controlling for specific features of the Russian economy, namely the large role of state-owned organizations. We estimate the resource movement and spending effects as determined by the theoretical model and find the presence of several signs of Dutch Disease: the negative impact of the real effective exchange rate on growth in the manufacturing sector, the growth of total income of workers, and the positive link between the real effective exchange rate and returns on capital in all three sectors. Although also predicted by the model and clearly observable, the shift of labor from manufacturing to services cannot be explained by ruble appreciation alone.
Added: Jan 29, 2015
Working paper
Makarov I. A. Economics/EC. WP BRP. Высшая школа экономики, 2018. No. WP BRP 199/EC/2018.
This paper analyzes the patterns of CO2 emissions for a sample of 144 countries in the period from 1992 to 2013. Environmental Kuznets curve (EKC) hypothesis was tested with the help of econometric analysis for both production- and consumption-based emissions. The relationship between incomes and emissions was also examined at the level of leading national economies. The results show important distinction: while there is some evidence of decoupling between economic growth and the growth of production-based emissions at the higher level of income, consumption-based emissions continue to grow with rising incomes even in the richest countries. The further investigation is devoted to discrepancies between production and consumption EKCs which are determined by emissions embodied in international trade. Structural decomposition analysis was applied to define the contribution of different factors to the change in emissions embodied in trade with the rise of GDP per capita. While structural and technological factors are dominant in explaining this change at the low and middle level of income, the effect of volume of trade plays the key role in evolution of emissions embodied in trade in high-income countries.
Added: Oct 31, 2018
Working paper
Ivaniushina V. A., Alexandrov D. A. Sociology. SOC. Высшая школа экономики, 2014. No. 43.
In this study we focus on the influence of peers on adolescents academic achievement. Specifically, how the learning motivation of peers is related to a student's school grades. We use multilevel regression to analyze the influence of peers on different levels of social circles: school, class, personal network, and compare the effects of "assigned friends" and "chosen friends". The methods of social network analysis are used to define the personal network of a student in different ways: cliques, complete ego networks, and mutual ego networks. We demonstrate that the model improves considerably when the level of personal networks is included between individual and class levels. The learning motivation of a student's friends (defined as a clique or ego network) has an important influence on the student’s school performance, net of student’s personal characteristics.
Added: Jun 3, 2014
Working paper
Takebe T. arxiv.org. math. Cornell University, 2013. No. 1308.4584.
We show that N-variable reduction of the dispersionless BKP hierarchy is described by a Loewner type equation for the quadrant.
Added: Apr 2, 2014
Working paper
Timorin V. arxiv.org. math. Cornell University, 2013. No. 1309.4879.
Section 235 of Gauss' fundamental treatise "Disquisitiones Arithmeticae" establishes basic properties that compositions of binary quadratic forms must satisfy. Although this section is very technical, it contains truly important results. We review section 235 using a more invariant language and simplifying the arguments. We also make the statements slightly stronger by removing unnecessary assumptions.
Added: Oct 6, 2013
Working paper
Tyumeneva Y. A. Policy Research Working Paper. WPS. World Bank Group, 2013. No. 10.
This case study examines how the Russian Federation disseminates and uses information from its student assessment system, drawing lessons for other countries seeking to more effectively use their  own  assessment data. Russia’s Unified State Examination (USE) is primarily used for student selection and certification purposes, but a variety of other uses have been attached to  it, including informing  pedagogy, ensuring accountability, and monitoring education quality. This variety of uses has had both positive and negative consequences for the school system. Information from international large-scale assessments (e.g.,  PISA, TIMSS, and PIRLS)1 has been widely used to introduce reforms in the school system. Factors that have affected the differential use of USE and international large-scale assessment data include, among others, the purpose of a given assessment, its design features and level of credibility, and access to the assessment database.  
Added: Sep 17, 2013
Working paper
Kozhukhar A. A. Linguistics. WP BRP. НИУ ВШЭ, 2015. No. 27.
This study analyses the difference between logophoric pronoun and long-distance reflexive in Mehweb Dargwa of East Caucasian language family. Following paper cites the examples that provide evidence for the difference existing between logophoric pronouns and long-distance reflexives in Mehweb and explains the cases of the reference ambiguity by introducing the idea of the zero pronoun with non-subject reference.
Added: Nov 29, 2015
Working paper
Kokovin S. G., Nahata B., Zhelobodko E. V. Economics/EC. WP BRP. Высшая школа экономики, 2014. No. WP BRP 83/EC/2014 .
This article describes ways to use original texts in the National Russian Corpus as well as news texts for teaching Russian as a foreign language. Two-year work of a scientific group of Higher School of Economics (Nizhny Novgorod-Moscow), which is called CorpLings is analyzed. Special attention is paid to the basic principles of research part of the project – automatic adaptation of acute news texts. We also describe ways to simplify structures, which seem difficult for students at the elementary level, from the point of view of their syntactic and morphological structure. Stages, needed for lexical simplification are described in detail. Among them there are creation of an algorithm to find the most appropriate synonyms, based on morphological rules, and analysis of a statistical model of contextual proximity of words. The article also addresses the difficulties faced by developers and the final result of research
Added: Dec 17, 2014
Working paper
Popova D. EUROMOD Working Paper Series. EM. Institute for Social and Economic Research, University of Essex, 2014. No. 2.
This paper analyses programmes of cash allowances for children and compares their effectiveness in combating child poverty in Russia and four EU countries – Sweden, Germany, Belgium and the United Kingdom. These countries are selected as representatives of alternative family policy models. Using microsimulation models (RUSMOD and EUROMOD), this paper estimates the potential gains if the Russian system were re-designed along the policy parameters of these countries and vice versa. Such an exercise rests on the idea of policy learning and provides policy relevant evidence on how a policy would perform, given different national socio-economic and demographic settings. The results confirm that the poverty impact of the program design is smaller than that of the level of spending. Other conditions being equal, the best outcomes for children are achieved by applying the mix of universal and means-tested child benefits, such as those employed by the UK and Belgium. At the same time, the Russian design of child allowances does not appear to be less effective in terms of its impact on child poverty when transferred to European countries in place of their current arrangements.
Added: Jan 29, 2014
Working paper
Valentina Kiritchenko. arxiv.org. math. Cornell University, 2013. No. 1307.7234.
We define convex-geometric counterparts of divided difference (or Demazure) operators from the Schubert calculus and representation theory. These operators are used to construct inductively polytopes that capture Demazure characters of representations of reductive groups. In particular, Gelfand-Zetlin polytopes and twisted cubes of Grossberg-Karshon are obtained in a uniform way. This preprint contains the proofs of results announced in Oberwolfach Reports in the talk with the same title.
Added: Oct 6, 2013
Working paper
Bogomolnaia A., Moulin H., Sandomirskiy F. et al. Computer Science. arXiv:1610.03745 [cs.GT]. Cornell university, arXiv.org, 2016
When utilities are additive, we uncovered in our previous paper (Bogomolnaia et al. "Dividing Goods or Bads under Additive Utilities") many similarities but also surprising differences in the behavior of the familiar Competitive rule (with equal incomes), when we divide (private) goods or bads. The rule picks in both cases the critical points of the product of utilities (or disutilities) on the efficiency frontier, but there is only one such point if we share goods, while there can be exponentially many in the case of bads.  We extend this analysis to the fair division of mixed items: each item can be viewed by some participants as a good and by others as a bad, with corresponding positive or negative marginal utilities. We find that the division of mixed items boils down, normatively as well as computationally, to a variant of an all goods problem, or of an all bads problem: in particular the task of dividing the non disposable items must be either good news for everyone, or bad news for everyone.  If at least one feasible utility profile is positive, the Competitive rule picks the unique maximum of the product of (positive) utilities. If no feasible utility profile is positive, this rule picks all critical points of the product of disutilities on the efficient frontier.
Added: Oct 13, 2016