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Of all publications in the section: 4 038
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Working paper
Sakevich Victoria I., Denisov B. P. Sociology. SOC. Высшая школа экономики, 2014. No. WP BRP 42/SOC/2014.
The paper considers the changes in major proximate determinants of fertility in Russia within the framework of demographic transition theory and Bongaarts approach to fertility analysis. After World War II Russian fertility became fully controlled process. The complex interplay of abortion and contraception during the Soviet period resulted in a very high abortion level. Russian government has almost never supported and promoted family planning as alternative to abortion. However couple's preferences of small offspring appeared more powerful than the will of authorities. Current trends show that albeit lack of governmental support the society itself is evolving towards more humanistic and effective birth control. Estimates made upon recent surveys' data confirm the validity of official statistics and thus the reality of favorable trend of abortion decline.
Added: May 13, 2014
Working paper
Podkolzina E., Voytova T. I. Public Administration. PA. Высшая школа экономики, 2011. No. 01.
The main goal of public procurement reform in Russia, initiated in 2005, was to prevent corrupt deals between suppliers and procurers. That is why the public procurement law favors formal mechanisms to govern most of the stages of procurement: the procurer is not allowed to take into account the reputation of the supplier when he announces calls for bids and selects the supplier, and he is prescribed to use the legal system (courts) if he is not satisfied with the contract performance. Since the efficiency of formal institutions is not very high, these mechanisms are complemented by a “formalized informal instrument” - blacklisting opportunistic suppliers, which is believed to substitute for reputation mechanisms when formal mechanisms are weak. In this paper, we show how and why the institutional environment in Russia makes the blacklisting of opportunistic suppliers irrelevant. We explore how the percentage of contract breaches out of the total number of signed contracts is related to corruption and transparency measures for Russian regions. We also argue that such factors as measurement costs, verification costs, length of contracts and lawsuit amounts influence the probability of winning a legal action for a contract breach.
Added: Aug 27, 2012
Working paper
Muravyev Alexander. IZA Discussion Paper. IZA, 2016. No. 10436.
This paper provides new evidence on the structure, dynamics and performance effects of corporate boards in publicly traded companies in Russia. It takes advantage of a new and unique longitudinal dataset of virtually all Russian companies whose shares were traded in the RTS/MICEX/MOEX over 1998-2014. The analysis highlights a number of strong trends in the evolution of boards of directors, such as the declining participation of insider directors and the increasing participation of foreign and female directors. It also shows that board characteristics are linked to company performance (the market-to-book ratio, Tobin’s Q, ROE and ROA), suggesting that boards of directors play a non-trivial role in corporate governance in Russia. Testing for structural breaks in the relationship between board composition and firm performance provides some evidence of the changing role of corporate boards over time.
Added: Jan 12, 2017
Working paper
Kaledin D. arxiv.org. math. Cornell University, 2015
We give a simple construction of the correspondence between square-zero extensions R′ of a ring R by an R-bimodule M and second MacLane cohomology classes of R with coefficients in M (the simplest non-trivial case of the construction is R=M=Z/p, R′=Z/p2, thus the Bokstein homomorphism of the title). Following Jibladze and Pirashvili, we treat MacLane cohomology as cohomology of non-additive endofunctors of the category of projective R-modules. We explain how to describe liftings of R-modules and complexes of R-modules to R′ in terms of data purely over R. We show that if R is commutative, then commutative square-zero extensions R′ correspond to multiplicative extensions of endofunctors. We then explore in detail one particular multiplicative non-additive endofunctor constructed from cyclic powers of a module V over a commutative ring R annihilated by a prime p. In this case, R′ is the second Witt vectors ring W2(R) considered as a square-zero extension of R by the Frobenius twist R(1).
Added: Nov 20, 2015
Working paper
Sokolov V., Hairutdinov A. Серия WP9 «Исследования по экономике и финансам». WP9. НИУ ВШЭ, 2021. No. 2489.
Using the unexpected outcome of Argentinian presidential primary elections in August 2019, which led to the country’s sovereign default, we investigate how the exposure of international bond funds to Argentinian sovereign bonds affected the discretionary sales of bonds by fund managers and flows by ultimate investors, conditional on fund liquidity and maturity structure. We find that more liquid and longer duration funds exhibit less sensitivity to pre-default funds’ exposure in terms of bond holding growth. Our second finding deals with asymmetric information among funds regarding the restructuring of post-default bonds and varying renegotiation costs. These costs are proxied by funds’ previous experience of holding the defaulted Argentinian debt interacted with fund’s distance to Buenos Aires. We confirm our hypothesis that the experienced North American funds with the lowest renegotiation costs retained more of their holdings of Argentinian bonds than all other groups
Added: Jun 16, 2021
Working paper
Kudryashov Y. arxiv.org. math. Cornell University, 2012
In this article, we extend the phenomena of a bony attractor from a rather artificial class of step skew products to the class of diffeomorphisms on the Cartesian product of the two-dimensional torus by a sphere of arbitrary dimension.
Added: May 16, 2013
Working paper
Lazareva O. Economics. EC. Высшая школа экономики, 2012. No. 21.

This paper estimates the effect of economic shocks that affect families with young children on children’s health, educational and behavioral outcomes in adolescence.  Transition period in Russia provides a natural experiment setting for estimating this effect.  During the economic turmoil of early transition many people lost their jobs, experienced salary declines or occupational downgrading. These individual labor market shocks were mainly caused by the structural changes in the economy. Analyzing household survey data from Russia I find that children who were under the age of five and whose parents were negatively affected during the early transition have poorer health in adolescence and are less likely to have completed high school. For the comparison group  –  children who were at the school age during the early transition  –  there is an effect on educational outcomes and risky behaviors but not on health. Absence of a father in a family during the early transition years has a negative health effect only for the younger age group. I also find differential effects for boys and girls, by mother and father.

Added: Jan 17, 2013
Working paper
Shramov K., Prokhorov Y. math. arxive. Cornell University, 2019
We classify compact complex surfaces whose groups of bimeromorphic selfmaps have bounded finite subgroups. We also prove that the stabilizer of a point in the automorphism group of a compact complex surface of zero Kodaira dimension, as well as the stabilizer of a point in the automorphism group of an arbitrary compact Kaehler manifold of non-negative Kodaira dimension, always has bounded finite subgroups.
Added: Nov 19, 2019
Working paper
Goncharuk N. B., Kudryashov Y. arxiv.org. math. Cornell University, 2015. No. 1504.03313.
In this article we prove in a new way that a generic polynomial vector field in ℂ² possesses countably many homologically independent limit cycles. The new proof needs no estimates on integrals, provides thinner exceptional set for quadratic vector fields, and provides limit cycles that stay in a bounded domain.
Added: Apr 15, 2015
Working paper
Andreev N. A. Financial Economics. FE. Высшая школа экономики, 2017. No. WP BRP 59/FE/2017.
We study the boundedness properties of the value function for a general worst-case scenario stochastic dynamic programming problem. For the portfolio selection problem,we present sufficient economically reasonable conditions for the finitness and uniform boundedness of the value function. The results can be used to decide if the problem is ill-posed and to correctly solve the Bellman-Isaacs equation with an appropriate numeric scheme.
Added: Jan 25, 2017
Working paper
Loginov K., Birkar C. math. arxive. Cornell University, 2020
In this paper we investigate non-rationality of divisors on 3-fold log Fano fibrations (X,B)→Z under mild conditions. We show that if D is a component of B with coefficient ≥t>0 which is contracted to a point on Z, then D is birational to ℙ^1×C where C is a smooth projective curve with gonality bounded depending only on t. Moreover, if t>1/2, then genus of C is bounded depending only on t.
Added: Aug 12, 2020
Working paper
Kurnosov N. arxiv.org. math. Cornell University, 2015
We prove that b2 is bounded for hyperk¨ahler manifolds with vanishing odd-Betti numbers. The explicit upper boundary is conjectured. Following the method described by Sawon we prove that b2 is bounded in dimension eight and ten in the case of vanishing odd-Betti numbers by 24 and 25 respectively.
Added: Nov 15, 2015
Working paper
Ovchinnikov A., Pogudin G., Vo T. Working papers by Cornell University. Cornell University, 2018
Elimination of unknowns in systems of equations, starting with Gaussian elimination, is a problem of general interest. The problem of finding an a priori upper bound for the number of differentiations in elimination of unknowns in a system of differential-algebraic equations (DAEs) is an important challenge, going back to Ritt (1932). The first characterization of this via an asymptotic analysis is due to Grigoriev's result (1989) on quantifier elimination in differential fields, but the challenge still remained. In this paper, we present a new bound, which is a major improvement over the previously known results. We also present a new lower bound, which shows asymptotic tightness of our upper bound in low dimensions, which are frequently occurring in applications. Finally, we discuss applications of our results to designing new algorithms for elimination of unknowns in systems of DAEs.
Added: Nov 1, 2019
Working paper
Penskoi A., Nadirashvili N. S., Berdnikov A. S. math. arxive. Cornell University, 2016
The known upper bounds for the multiplicities of the Laplace-Beltrami operator eigenvalues on the real projective plane are improved for the eigenvalues with even indexes. Upper bounds for Dirichlet, Neumann and Steklov eigenvalues on the real projective plane with holes are also provided.
Added: Mar 21, 2017
Working paper
Feigin B. L., Miwa T., Jimbo M. et al. Cornell University Library, 2013. No. 1309.2147.
We construct an analog of the subalgebra $U\mathfrak{gl}(n)\otimes U\mathfrak{gl}(m)\subset U\mathfrak{gl}(m+n)$ in the setting of quantum toroidal algebras and study the restrictions of various representations to this subalgebra.
Added: Apr 24, 2014
Working paper
Parshakov P., Байдина К. О. Economics/EC. WP BRP. Высшая школа экономики, 2017. No. WP BRP 163/EC/2017.
This study estimates an attendance demand model in a reduced form, with uncertainty as one of the determinants of demand, to test the Uncertainty of Outcome Hypothesis (UOH), using data from the Russian Football Premier League (RFPL). These data fit our requirements for two reasons. First, there are few sellout matches, so demand for tickets in the RFPL is not restricted by stadium capacity. Secondly, there have hitherto been no articles devoted to the study of outcome uncertainty in the RFPL. The results indicate that the UOH does not explain the behavioural pattern of attendees in the RFPL. The dependence between the attendance and uncertainty is found to be U-shaped or even declining. We explain the U-shaped dependence by the visiting team effect; an attendee’s utility in the RFPL depends more on seeing a top team coming to the city than on the uncertainty of the outcome of the match.
Added: Jun 15, 2017
Working paper
Gasparetto T. M., Fernandez-Jardon Fernandez C. M., Barajas A. Management. MAN. Высшая школа экономики, 2014. No. Management WP BRP 30/MAN/2014.
The paper contributes to explain an unexplored competition that is the Brazilian State Championships. How it is organized and the financial features of three championships are described. The aim of the paper is to discover if the presence of "Brand-teams" in a competition increases the income of all participating teams and if the type of championship conditions the effect of Brand Team on revenues of all teams. As the present study aims to be a pioneer in economic research on Brazilian State Championships, it has an exploratory character. The study uses an equations system to estimate for testing the hypothesis. The estimation method is 3SLS to delete the possible endogeneity of the variables. There have been studied 400 matches played by 48 teams from Mineiro, Paulista and Carioca Championships in season 2013. The structure of the Brazilian State Championship, with the participation of brand-teams, creates an income redistribution effect. The features of the visiting team imply an increase in attendance. This effect is moderated by the type of Championship. The Championship structure generates an additional increase of the revenue. They increase according to the phase in which the competition develops. This paper contributes to introduce the Brazilian State Championships. Moreover, it comes to justify the participation of brand-teams in order to help smallest teams to increase their revenues. The paper shows that the organization of some Championships has more beneficial effects than others
Added: Dec 24, 2014
Working paper
Guriev S., Vakulenko E. Centre for Economic Policy Research Discussion Paper Series. ISSN 0265-8003. Centre for Economic Policy Research, 2013. No. 9675.
In this paper, we study panel data on region-to-region gross migration flows in Russia for 1995-2010. We find that barriers to labor mobility that hindered internal migration in 1990s, have been generally eliminated by the end of 2000s. In 1990s many poor Russian regions were in a poverty trap: potential workers wanted to leave those regions but could not afford to finance the move. In 2000s (especially in late 2000s), these barriers were no longer binding. Overall economic growth and development of financial markets allowed even poorest Russian regions to grow out of the poverty traps. This resulted in convergence in Russian labor market in 2000s; the interregional gaps in incomes, wages and unemployment rates decreased substantially and are now comparable to those in Europe.
Added: Feb 15, 2013
Working paper
Bartunov S., Кондрашкин Д. А., Osokin A. et al. Computation and language. arXiv:1502.07257. Arxiv.org, 2015
Recently proposed Skip-gram model is a powerful method for learning high-dimensional word representations that capture rich semantic relationships between words. However, Skip-gram as well as most prior work on learning word representations does not take into account word ambiguity and maintain only single representation per word. Although a number of Skip-gram modifications were proposed to overcome this limitation and learn multi-prototype word representations, they either require a known number of word meanings or learn them using greedy heuristic approaches. In this paper we propose the Adaptive Skip-gram model which is a nonparametric Bayesian extension of Skip-gram capable to automatically learn the required number of representations for all words at desired semantic resolution. We derive efficient online variational learning algorithm for the model and empirically demonstrate its efficiency on word-sense induction task.
Added: Nov 5, 2015
Working paper
Suslov D. Basic research program. WP BRP. National Research University Higher School of Economics, 2014
Despite relative normalization of the US-Russia dialogue in early 2013 and their impressive cooperation on Syria and Iran later that year, the relations on the whole remain extremely fragile, volatile and at the same time stagnant. Their traditional agenda, based on arms control, is crumbling; leadership is both countries is not regarding positive US-Russian partnership as central for their vital national interests fulfillment; and the share of contradictions is growing. At best, this deprives the sides of many opportunities to advance their interests through cooperation. At worst, this could spark a new serious crisis by. The author argues that the fundamental problem of the US-Russia relations is their old-fashioned philosophy, centered on strategic deterrence and balancing. This philosophy, the paper claims, in its turn predetermines an agenda of the relations, which poorly reflects the real challenges that US and Russia face in the world of today and tomorrow. The author claims that the new philosophy of the US-Russia relations should be based not on strategic deterrence and strategic balance in a Cold war understanding, but on clear recognition that the sides need each other and need to cooperate in order to deal with real challenges and achieve real opportunities.
Added: Mar 29, 2015
Working paper
Borisova E., Govorun A. V., Ivanov D. EIC working paper series. EIC. IMT School for Advanced Studies Lucca, 2016. No. 5/2016.
Does bridging or bonding social capital matter for redistribution preferences? Existing literature demonstrates causal link between measures of social capital and such preferences but does it mostly for developed countries with good enforcement of formal rules and without a distinction between two completely different types of social capital. We argue that welfare state relies on contributions from an immense number of anonymous citizens, thus attitudes towards strangers, i.e. generalized trust and solidarity should be salient. Using two surveys of about 34,000 and 37,000 Russians we prove this proposition showing the importance of the bridging type but not the bonding one. Instrumenting social capital with education, climate and distance from Moscow we deal with endogeneity concerns. Additionally we claim that connection between social capital and redistribution preferences for less developed countries such as Russia could be similar to developed countries.
Added: Nov 18, 2016