This paper examines the issue of tax evasion by enterprises through underreporting activity. We develop a view of this phenomenon as an equilibrium of the game between a businessman and an imperfectly monitored supervising official, in which a businessman can hide part of his profit and offer bribe to official. We determine conditions under which such tax evasion and bribery become wide-spread ...

The paper describes environmental project ZmapujTo.cz which is intended to fight against illegal waste dumps in the Czech Republic with using geographic information systems (GISs). The smartphone/tablet GIS reporting application ZmapujTo has been developed. This free available mobile application enables to report illegal dumps and also overloaded containers of municipal waste. The project Zmapu...

The paper presents methods for assessing economic, resource and environmental efficiency of energy supply systems and ways of its improvement, the main of which are the development of cogeneration and renewable energy sources (RES). The problem of allocating fuel and financial costs in the case of the combined production is solved. The methods allow determining specific indicators of supplied p...

Two binary-encoded models describing some aspects of the evolution in an artificial immune system have been proposed and analyzed. The first model has focused on the evolution of a paratope's population, considering a fixed group of epitopes, to simulate a hypermutation mechanism and observe how the system would self-adjust to cover the epitopes. In the second model, the evolution involves a gr...

For over thirty years the United States Department of Justice and Federal Trade Commission (“Agencies”) have confronted bands of businessmen who have steadfastly refused to pay attention to legal precedent, repeated governmental pronouncements, and administrative sanctions imposed on their colleagues. The conduct revealed in these cases evidences a willingness to blatantly disregard the law by ...

In this paper, according to economics of real estate and macro-control theory, combine with the characteristics of the real estate market, macro-control of the real estate market is studied. After giving the dynamic model of three-dimensional nonlinear differential equations based on the total number of houses on the real estate business, the government’s averages housing investment funds and t...

Analytical tools in business management are understood as a combination of information technologies and quantitative methods used to assist stakeholders to make better decisions. The contemporary business environment is dramatically changing by the massive accumulation of data. Now, as never before, the use of analytical tools must be expanded to take advantage of this growing digital universe....

The second year of Jair Bolsonaro’s presidency in Brazil has been marked by multiple sources pressure on the government. COVID-19 pandemic taken its toll Brazilian lives, national health system and country’s already sluggish economy. Hitting close to home, Bolsonaro witnessed beginning several investigations against his also politician sons increasing pledges for moderation from Centrao, inform...