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Of all publications in the section: 3 573
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Working paper
Ivan Losev. math. arxive. Cornell University, 2017. No. 1704.05144.
In this paper we study derived equivalences for Symplectic reflection algebras. We establish a version of the derived localization theorem between categories of modules over Symplectic reflection algebras and categories of coherent sheaves over quantizations of Q-factorial terminalizations of the symplectic quotient singularities. To do this we construct a Procesi sheaf on the terminalization and show that the quantizations of the terminalization are simple sheaves of algebras. We will also sketch some applications: to the generalized Bernstein inequality and to perversity of wall crossing functors.
Added: Oct 9, 2017
Working paper
Polishchuk A., Lekili Y. math. arxive. Cornell University, 2018
Following the approach of Haiden-Katzarkov-Kontsevich arXiv:1409.8611, to any homologically smooth graded gentle algebra A we associate a triple (Σ_A,Λ_A;η_A), where Σ_A is an oriented smooth surface with non-empty boundary, Λ_A is a set of stops on ∂Σ_A and η_A is a line field on Σ_A, such that the derived category of perfect dg-modules of A is equivalent to the partially wrapped Fukaya category of (Σ_A,Λ_A;η_A). Modifying arguments of Johnson and Kawazumi, we classify the orbit decomposition of the action of the (symplectic) mapping class group of Σ_A on the homotopy classes of line fields. As a result we obtain a sufficient criterion for homologically smooth graded gentle algebras to be derived equivalent. Our criterion uses numerical invariants generalizing those given by Avella-Alaminos-Geiss in math/0607348, as well as some other numerical invariants. As an application, we find many new cases when the AAG-invariants determine the derived Morita class. As another application, we establish some derived equivalences between the stacky nodal curves considered in arXiv:1705.06023.
Added: Dec 6, 2018
Working paper
Balzin Edouard. arxiv.org. math. Cornell University, 2014
In the world of triangulated categories, categorical resolutions (as defined by Kuznetsov and Luntz) have been useful. One would like to have a similar notion of categorical resolution in homotopical algebra, where one works with categories which are not additive, such as the categories of E_n-algebras. Describing algebraic structures using the approach inspired by Segal, we transfer the question to the setting of homotopical Grothendieck (op)fibrations. We then introduce the notion of derived section of a homotopical Grothendieck (op)fibration, and show that a selected class of functors gives rise to (partial) categorical resolutions for homotopical categories of derived sections.    
Added: Dec 23, 2014
Working paper
Rogonyan G. Философия и исследования культуры. WP20. Высшая школа экономики, 2014. No. WP20/2014/02.
The aim of this paper is to show how and why the method of radical interpretation, proposed by Donald Davidson, can solve the problems that are formulated in a variety of skeptical scenarios. In particular, the method of radical interpretation deprives Cartesian scenario (both in its traditional and recent versions) all its force and even the status of philosophical problem. Appealing to the difference between intendede and unintended lies one can see how the global skeptical scenario gets solved in both cases. The paper also formulates an argument in favor of expanded version of naturalized epistemology that was offered by W. V. O. Quine - first of all, due to the introduction of social factors. In particualr, there are always at least two necessary limitations imposed by the communication on our hypothesis about knowledge and delusion. In addition, the paper explains the need for a moderate externalism (both perceptual and social) to the variants of Descartes and Hume's skeptical scenario.
Added: Apr 26, 2014
Working paper
Dobrohotov A. L. Humanities. HUM. Basic Research Programme, 2015. No. 89.
Proposed study aims to clarify the nature of the rationality crisis in the European culture of Modernity. This crisis manifested itself in many ways already in the 17th-19th centuries, i.e. at the peak of rationalism. The study considers certain aspects of Cartesianism, which prevented it from dissolving entirely in the epistemology and methodology of Modernity and which, moreover, presuppose certain steps to be taken toward reconsidering the new European rationalism within the framework of overlapping philosophical ideas and literary images. The study focuses on three subjects implied by ‘cogito’: self-consciousness, will, and law.
Added: Apr 6, 2015
Working paper
Elagin A. D. arxiv.org. math. Cornell University, 2012. No. 1206.2881.

In this paper a method of constructing a semiorthogonal decomposition of the derived category of G-equivariant sheaves on a variety X is described, provided that the derived category of sheaves on X admits a semiorthogonal decomposition, whose components are preserved by the action of the group G on X. Using this method, semiorthogonal decompositions of equivariant derived categories were obtained for projective bundles and for blow-ups with a smooth center, and also for varieties with a full exceptional collection, preserved by the action of the group. As a main technical instrument, descent theory for derived categories is used.

Added: Sep 10, 2012
Working paper
Feigin E., Cerulli Irelli G., Reineke M. arxiv.org. math. Cornell University, 2012. No. 1209.3960.

A desingularization of arbitrary quiver Grassmannians for representations of Dynkin quivers is constructed in terms of quiver Grassmannians for an algebra derived equivalent to the Auslander algebra of the quiver.

Added: Oct 9, 2012
Working paper
Kuzminov I., Bakhtin P. D., Khabirova E. et al. Science, Technology and Innovation. WP BRP. Высшая школа экономики, 2018. No. 82.
This paper contributes to the conceptualisation and operationalisation of the “technology trend” discussion in the scope of the Technology Foresight paradigm. It proposes a consistent logical approach to analysing technology trends and increase predictive potential of futures studies. The approach integrates Big Data analysis into the Foresight studies’ toolset by means of applying text mining, namely computerised analysis of large volumes of unstructured text-based industry-relevant analytics. It comprises methodological results such as analytical decomposition of the trend concept, including trend attributes (inherent characteristics) and various trend types and empirical results of detection and classification of global technology trends in the agricultural sector. The study makes a significant contribution to the development of a conceptual apparatus for trend analysis as a sub-area of Foresight methodology. The agricultural field is used to demonstrate the application the methodology. The empirical results can be applied by federal and regional authorities responsible for promoting development of the sectors to design relevant strategies and programmes, and by companies to set their long-term marketing and investment priorities.
Added: Oct 3, 2018
Working paper
Aistov A., Mukhametova Elvina. Economics/EC. WP BRP. Высшая школа экономики, 2015. No. WP BRP 89/EC/2015.
In this paper we explore relationships between corruption perceptions and such characteristics as the size of shadow economy, GDP per capita, well-being, the Happy Planet Index (HPI), and quality of institutions. Special attention is paid to the comparison of transitional economies with countries that joined the European Union in 2004 and 2007, and developed countries. It is shown that irrespective of whether the economy is developed or transitional, negative dependence of corruption perceptions on shadow economy switches to positive if the size of the shadow economy increases over 15% of the official GDP. After the shadow economy passes 45%, the Transparency International Corruption Perceptions Index ceases to respond to growth of the shadow economy. Our estimates confirm that transition in countries is accompanied by growth of GDP per capita and a decrease in the level of corruption perceptions. For these reasons, transitional countries and countries where transition is over belongs to different clusters according to these indicators. This is not true for well-being and the HPI. It is not surprising that a regression analysis shows that "control of corruption" and "regulatory quality" are significant for reducing corruption perceptions both in transitional and other economies. It is interesting that "government effectiveness" and "voice and accountability" are significant only for transitional economies and insignificant in others. "Rule of law" and "political stability" are insignificant both in transitional and in developed countries  
Added: Feb 17, 2015
Working paper
Равлик М. В. Sociology. SOC. Высшая школа экономики, 2014. No. WP BRP 52/SOC/2014.
This paper addresses the determinants of migration between countries. Special emphasis is placed on which factors attract immigrants. This paper is the first to analyse this question in an integrated framework that takes into account the characteristics of both the origin and destination countries of migration. The findings confirm previous findings, however, in a broader and more compelling frame given the study’s unique dyadic approach to the analysis of migration patterns. Migrants are more attracted to countries with a common colonial history but, then, among these, prefer countries that offer the better living conditions and rule of law.
Added: Oct 2, 2014
Working paper
Roshchin S., Travkin P. Economics/EC. WP BRP. Высшая школа экономики, 2017
Purpose The present paper aims to determine the influence of various enterprise characteristics on job-related training. The paper focuses mainly on identifying the influence of a firm’s innovative activity, technological capacity for manufacturing and product market competition on its likelihood of having a training program and on training intensity. Design/methodology/approach The authors administered a firm-level survey to a sample of 2000 Russian enterprises. This survey includes questions about job-related training and key information about the companies’ activities. Probit estimates (including a multiple choice model) are used in the statistical analyses. Findings The results indicate that an enterprise’s provision of training is determined largely by firm-specific factors, such as its innovative activity, technical and technological state of manufacturing and product market competition. The authors adopt two widely used measures of training: incidence and intensity. Innovative activity and the technical and technological state of manufacturing are decisive factors in explaining a firm’s provision of training, as they have a strictly positive effect on both the incidence and the intensity of training. Product market competition has a positive effect on the incidence of training and a negative effect on the intensity of training. Originality/value This paper is original because it assumes that the process of deciding whether to implement a training program at an enterprise and the corresponding proportion of employees involved in training is built on the presupposition that the training intensity decision is made in two stages. This paper is the first to present estimates of job-related training intensity based on data from Russian enterprises.
Added: Oct 31, 2017
Working paper
Sharapudinov S., Zezerova V., Storchevoy M. Graduate School of Management, St.Petersburg State University Working Papers. 13(E). Graduate School of Management, St.Petersburg State University, 2017. No. 8721.
Online reviews became one of the most effective tools that influence consumer behavior and level of sales. In this paper we consider determinants of online review rating. The study is based on more than three thousand online reviews from Russian consumers of durable goods (electronics and home appliances). It was found that there is a significant difference in the level of influence between new and old reviews. Moreover, the higher the total numbers of reviews available, the higher the number of reviews taken into account by a particular consumer. Another finding is that both average online rank and price of a product are positively correlated with variance of reviews on that product. Based on the differences in the effectiveness of information transmission about quality of products, products were divided into two categories: “experience” products and “search” products. At the last stage, we provide an econometric model that allows to explain not only dynamic but also the direction of consumers’ rank of a product.
Added: Oct 19, 2017
Working paper
Dulyak Y. Институциональные проблемы российской экономики. WP1. НИУ ВШЭ, 2013
This study examines the development of the board of directors institution in Russian companies. The purpose of the paper is to determine the stages of the evolution of the board role in Russia and to evaluate the further perspectives of this institution. Therewith we detect the stages according to the change of the board of directors role in Russian companies. We demonstrate the system of factors (institutional, legal, human, economic factors, and features of corporate sector) that influence the transformation of the board’s role. Studies of experts in the field of corporate governance and the updating of the corporate law form the informational base of the paper. Moreover we use the materials of interviews with the members of the boards conducted in spring-summer 2012.
Added: Sep 18, 2013
Working paper
Gokhberg L., Fursov K., Perani G. Working Party of National Experts on Science and Technology Indicators. DSTI/EAS/STP/NESTI. Organisation for Economic Co-operation and Development, 2012. No. DSTI/EAS/STP/NESTI(2012)9/ANN1.

The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.

Added: Jan 9, 2013
Working paper
Zhirkov K. Sociology. SOC. Высшая школа экономики, 2014. No. WP BRP 35/SOC/2014.
The present study examines survey data from 45 countries by the means of factor and regression analyses in order to understand the nature and causes of anti-Americanism. Empirical results reveal a clear distinction between cultural and political anti-Americanism. The former involves negative attitudes towards American culture and its global spread, whereas the latter is specifically focused on disapproval of the U.S. foreign policies. The two forms of anti-Americanism also differ in their relationship to socioeconomic development. Cultural anti-Americanism is most widespread in countries with average levels of Human Development Index, whereas political anti-Americanism is stronger in the most developed societies. This study finds that Muslim societies are characterized by higher levels of both cultural and political anti-Americanism. On the whole, these findings indicate that anti-Americanism follows consistent country-level patterns and likely has universal roots which should be studied within a comparative framework.
Added: May 28, 2014
Working paper
Sibirtseva V., Karpov N. Working Papers of Humanities. WP. Издательский дом НИУ ВШЭ, 2012. No. 2012-6.
The paper considers the features of selecting the teaching illustrative material for the theoretical part of a multimedia textbook on Russian as a foreign language, and describes the peculiarities of compiling a set of exercises on the basis of the National Corpus of the Russian Language. The author(s) analysed in detail the difficulties caused by working with the National Corpus of the Russian Language for educational purposes and problems emerged in the process of working on a project aimed at creating an electronic textbook "The Russian verb. Word formation". Technology of electronic textbook was created, which is used for learning foreign language. The helpful tool tip was added in the textbook. It was compounded with grammatical information and English translation for each separated word.
Added: Nov 8, 2012
Working paper
Mikhail Bokov, Razheva (Edelkina) A., Klubova M. et al. Science, Technology and Innovation. WP BRP. Высшая школа экономики, 2013. No. 22.
The paper assesses the development of the market for navigation services and devices based on the results of a recently held Foresight exercise on monitoring of global technology trends. The future of the market for Global navigation satellite systems (GNSS) devices is largely influenced by grand challenges (i.e. lifestyle change, technical safety, urbanization, rural development, food security, etc.) that determine the pathway for extending use of GNSS signal in different sectors of the economy. Today, satellite positioning technology is used by transporters, carriers, motorists, surveyors, builders, etc. through a wide array of devices — like mobile phones or multimedia devices with built-in receiver modules. Different Foresight methods and tools were used for analyzing the market structure and volumes of navigation services and devices and to detect potential future market developments. The main technical characteristics of GNSS are compared in order to reveal their impact on the quality of the navigation signal essential for the end-users. Investigating the future dynamics of this market in Russia on the basis of expert estimations and governmental strategic documents, the authors conclude that the commercialization of GNSS in Russia is possible only in certain segments, mainly navigation modules for personal vehicles, surveying and mapping equipment as well as consumer electronics.
Added: Nov 16, 2013
Working paper
Moskovskaya A. A., Oberemko O. A., Silaeva V. et al. Sociology. SOC. Высшая школа экономики, 2013. No. WP BRP 26/SOC/2013.
Professional associations in Russia are to some extent novices in contemporary professional regulation. Only small part of them can play significant role in enforcement of professional control (representing professional community in front of other stakeholders, adopting professional standards, ensuring market closure, protecting of prevalence of professional ethics etc.). Partially that comes from the lack of experience of self-regulation that professions have in the Russian history and sharp invasion of the global market in the 1990-es, partially that follows tradition of state predominance in economy and society. During the last two decades a mass of organizations arose in Russia calling themselves professional associations, guilds, societies and unions. The task to understand who they are, whether they can and they ought to represent professional community and what are their ways of professional self-regulation became now a pressing practical problem and an interesting research task. The object of this research is mapping the field of variety of non-government organizations that claim institutional control as professional associations in order to clarify the following issues: - What are the main forms of professional associations by their qualitative characteristics - What are their actual means and feasible opportunities to achieve professional control in their field of expertise or at least influence it – What are the main limits of professional self-regulation they dispose and whether there are any alternative forms of professional regulation in certain professional areas  
Added: Nov 22, 2013
Working paper
Olga N. Molchanova, Tatyana Y. Nekrasova. Psychology. PSY. Высшая школа экономики, 2014. No. 17.
This article describes the creation of a Russian-language version of the Contingencies of Self-Worth Scale (CSWS). We report the process and the three stages of adapting the questionnaire and report the results of the stage three version (N = 422); an internal consistency test (Cronbach's Alpha – from 0.67 to 0.84); item discrimination (0.55 to 0.86); retest reliability (0.54 to 0.79, p < 0.001); and construct validity. The analysis of the psychometric characteristics of the questionnaire confirmed the possibility of its appropriateness as a research tool to elicit the basis of self-esteem.
Added: Mar 28, 2014
Working paper
Rybakov S. arxiv.org. math. Cornell University, 2013
For a morphism of smooth schemes over a regular affine base we define functors of derived direct image and extraordinary inverse image on coderived categories of DG-modules over de Rham DG-algebras. Positselski proved that for a smooth algebraic variety $X$ over a field $k$ of characteristic zero the coderived category of DG-modules over $\Omega^\bullet_{X/k}$ is equivalent to the unbounded derived category of quasi-coherent right $\DD_X$-modules. We prove that our functors correspond to the functors of the same name for $\DD_X$-modules under Positselski equivalence.
Added: Dec 17, 2013
Working paper
Bodzenta-Skibinska A. arxiv.org. math. Cornell University, 2013
Let X be a smooth rational surface. We calculate a DG quiver of a full exceptional collection of line bundles on X obtained by an augmentation from a strong exceptional collection on the minimal model of X. In particular, we calculate canonical DG algebras of smooth toric surfaces.
Added: Nov 5, 2014