Central Economics and Mathematics Institute

About: Central Economics and Mathematics Institute is a facility organization based out in Moscow, Russia. It is known for research contribution in the topics: Population & Foreign-exchange reserves. The organization has 297 authors who have published 580 publications receiving 6449 citations. The organization is also known as: Federal State Institution of Science Central Economics and Mathematics Institute of the Russian Academy of Sciences.

Ratio-conjugation tool and its application in linear optimization models†

Abstract: The ratio-conjugation-tool (RC) is constructed systematically, and its applicability for analysis of economic models is demonstrated. One of the main results establishes a general formula for RC of aggregative function. This tool is applied to the analysis of linear economic dynamics models of Neumann–Gale type which can be solved by a dynamic programming method: for each direct problem we construct the corresponding dual RC-problem. Moreover, we consider three examples of the most important economic dynamics models and look at these now from a unified general position. † This article has been published in Russian in Economics and Mathematical Methods, 2006, 42(2), pp. 60–78 by the publishing house, Nauka, who have given permission to publish it in this journal.

A Modified Model to Estimate Building Rental Multipiers Accounting for Advalorem Operating Expenses

Abstract: To develop ideas on building element valuation contained in the first article on the subject published in REMV, we propose an elaboration of the approach accounting for ad valorem expenses incidental to property management, such as land taxes, income/capital gains tax, and insurance premium costs; all such costs, being of an ad valorem nature in the first instance, cause circularity in the logic of the model, which, however, is not intractable under the proposed approach. The resulting formulas for carrying out practical estimation of building rental multipliers and, in consequence, of building values, turn out to be somewhat modified, and we demonstrate the sensitivity of the developed approach to the impact of these ad valorem factors. On the other hand, it is demonstrated that (accounting for) building depreciation charges, which should seemingly be included among the considered ad valorem factors, cancel out and do not have any impact on the resulting estimates. However, treating the depreciation of buildings in quantifiable economic terms as a reduction in derivable operating benefits over time (instead of mere physical indications, such as age), we also demonstrate that the approach has implications for estimating the economic service lives of buildings and can be practical when used in conjunction with the market-related approach to valuation – from which the requisite model inputs can be extracted as shown in the final part of the paper.

Human Capital of the Enterprise in the Context of System Economy

Abstract: One of the key factors that determine the success of the company and ensure its ongoing development, adaptation to the requirements of the digital economy, is the human capital (HC) of the enterprise. In this regard, the purpose of the study is designated as identifying ways to support the integral and sustainable growth of a company based on the development of its human capital. Since an enterprise is an open socio-economic system, the methodological basis of the work is the systems economic theory, which made it possible to present the company's activities as the interaction of object, environmental, process and project systems. Based on this concept and taking into account the objectives traditionally pursued by the company, four basic functional complexes have been identified that ensure the stability and reproductive capabilities of the enterprise, the challenges that need to be overcome within such capabilities were identified, the requirements for the knowledge, skills and abilities of personnel were established. Comparison of the human resources of the enterprise and the features of the corporate tasks solved with their help made it possible to group the elements of the company's HC in a new way – depending on the impact on the noted basic subsystems that determine the integrity of the company. This systematization demonstrated the interconnection of individual elements of the enterprise's HC and the performance of the corresponding complexes. Thus, the probable personnel reasons for the lag in certain areas of the company's activity and the possibilities of their reorganization by targeted impact on the required elements of the HC were identified. Since the implementation of the proposed approach requires the determination of the status of the corporate HC, and the reliability of such a procedure traditionally raises criticism due to the objective difficulties of measurement, the article proposes a methodology to streamline the process of assessing the state of the parameters under study. The methodology is based on the ranking of HC indicators depending on the accuracy of displaying the parameters of the object. The proposed approach made it possible to determine the tools for monitoring the selected categories of human capital, ways to step them up and remedy the situation.

A virtual scientific communication environment based on a semantic scientific information system

Abstract: This paper focuses on the principles and capabilities of a virtual communication system that facilitates new forms of scientific communications and evaluation of research productivity, as well as the specifics of its implementation based on the major Socionet open access research-information system. The innovative potential of the discussed environment is shaped by the use of a multi-aspect taxonomy of semantic linkages between the system's information objects, their online declaration by the users, and the availability of a service to notify the authors of the objects being linked together of such event.

An Individual-Based Model of the Population Dynamics of the Arctic Fox (Vulpes lagopus semenovi) on Mednyi Island, Commander Islands, North Pacific

Abstract: We have developed a spatially explicit individual-based model that imitates the population dynamics of the Arctic fox on Mednyi Island. In the Red Data Book of the Russian Federation, the Mednyi Arctic fox is listed as an endangered species. The model developed is based on data collected over 19 years of fieldwork. Annual marking of cubs in the study area allowed us to identify up to 80% of animals individually and to collect their life-history data. As a result, we identified the mortality rates of males and females of all age groups, the probabilities of breeding, litter sizes, the sex ratios of animals in different age groups, social structures, dispersion distances, and the patterns of making decisions in the selection of social partners and habitat patches. The model is spatially explicit, i.e., the heterogeneity of the habitat patches is defined in explicit form. The model works with a time step of one year. In simulations, demographic parameters such as population dynamics, population age structure, sex ratio in different age groups, and the structure and size of families conformed to the empirical data. An analysis of the model sensitivity to variations in mortality rates in different age groups showed that the sensitivity to shifts in cub mortality is much higher compared to adults of all age groups. Through increasing the cub mortality rate to 95% over a period of one to five years, we simulated the effect of the otodectic mange epizootic, which was observed in a real population of the Mednyi Arctic fox. The population recovery time after the end of the impact in the simulation was significantly longer compared to field data. We suggest that, in reality, with a low population size, the productivity of the population increases. This feedback that accelerates population recovery has not yet been introduced into the model. In conclusion, we discuss advantages of the individual-based modeling based on long-term field studies.