The analysis of a solar installation operation was conducted on the example of a detached house in the Lesser Poland province in Poland. A gas boiler and three flat-plate collectors are located inside the house, which are used for heating water in the hot water tank with a volume of 220 dm3. The installation was established in 2012. The heat measured system (for solar gains) was added in 2014. In 2015–2019 solar heat gains measured per area of absorber were higher than 340 kWh/m2. During a two-week period in June 2015, the insolation on the horizontal plane and the temperature were measured in 4 different points of the hot water tank. On this basis, heat losses from the storage tank were determined, i.e. a decrease in temperature during periods with and without the consumption of hot water by the residents. During this period, a temperature higher than 80°C was observed several times in the hot water tank. In two parts of the hot water tank, rhe determined temperature decreases were used to obtain the heat loss amount. In the analyzed period (2 weeks), 9 days were observed with solar heat gains higher than 9 kWh/day. For these days, the value of heat loss from the solar hot water tank was estimated at over 6 kWh/day. This data corresponds to the actual heat demand for hot water preparation in the building at 7.3 kWh/day. The correlation between daily solar heat gains and solar hot water tank heat losses were also determined. In addition, based on the amount of heat losses, the value of the tank loss coefficient was estimated. The obtained value was compared with the manufacturer’s data and reference data.

The research is devoted to the organization of the energy policy objectives implementation

through programs. A country’s energy policy can be monitored in many ways. The article proposes

to consider the implementation of energy policy objectives with the budget programs maintenance

on the example of Ukraine. Budget programs make it possible to trace the dynamics of changes in

the aim and directions of the authorities’ energy policy, implemented for budgetary funds. With the

budget programs since 2002 in Ukraine, it was possible to trace the increase in spending on the coal

industry, highlight the funding forced of negative consequences in the energy sector and separate

the steps to develop an energy strategy. Changes in the totality of energy policy budget programs

are shown, their contents are considered. The decrease in the budget programs number associated

both with the enlargement of their aim and with the withdrawal expenses for reconstruction and

social protection of those affected by the previous energy activities from the budget funding. To

assess budget programs planning and implementation uniformity the author’s integrated indicator is

proposed. It takes the funding level and the quality indicator implementation on assignment directions

into account. The calculation of the indicator showed that the expenditures for the general

management of the energy policy and for scientific development are planned in the programs more

evenly than the expenses for the energy strategy implementation.

The overriding goal of this paper is to present the most influential minimalist approaches1 to the resolution of the infinite regress in antecedent-contained deletion constructions. Therefore, the point of departure is the general description of the problem concerning the interpretation of sentences containing antecedent-contained deletion, which occurs at LF (Logical Form), when a null VP is filled with a copy of its antecedent creating at the same time an infinite regress. In the subsequent sections of this paper I strive to give an account of the attempts to resolve ACD by focusing on the theory of Vehicle Change developed by Fiengo and May (1993), the case-based approach proposed by Hornstein (1995) as well as the copy theory of movement by Fox (2002). In the last section of this paper I provide some Chomsky’s views (2004) on the direction in which the research on ACD constructions may proceed.

Numerous Russian media professionals have moved to Ukraine in the last decade. These migrants can be seen as contemporary mobile, highly skilled, transnationally connected professionals who made a lifestyle choice by relocating to Ukraine. However, after the EuroMaidan, their move has also become increasingly political. Drawing upon a series of interviews with Russian media professionals living and working in Ukraine – and addressing their social relationships, professional practices and thoughts on return migration – I analyse the ways in which the lifestyles of these ‘middling transnationals’ can be affected by the political tensions between host and home countries. This paper draws upon the idea of transnational ties being not necessarily durable and supportive but, rather, flexible and multi-direc-tional. I argue that the annexation of Crimea and the armed conflict in Donbas have altered migrants’ cross-border connections with Russia; however, instead of tying them to a place and excluding them from global networks, it might also push them towards inhabiting multiple transnational spaces. These observations highlight the political dimension of ‘middling transnationalism’ which is usually not con-sidered in migration scholarship.

The dynamics of some features of arctic soils and their connection with air-water relations are presented. Investigations of 5 selected profiles were carried out in 1987. Considerable dynamics of moisture, redox potential (Eh) and oxygen diffusion rate (ODR) during the summer season were confirmed. Oscillations of these features in individual profiles and sometimes in their horizons were distinguished.

Automation in experiments carried out on animals is getting more and more important in research. Computers take over laborious and time-consuming activities like recording and analysing images of the experiment scene. The first step in an image analysis is finding and distinguishing between the observed animals and then tracking all objects during the experiment. In this paper four tracking methods are presented. Quantitative and qualitative figures of merit are applied to confront those methods. The comparison takes into consideration the level of correct object recognition during different disturbances, the speed of computation, requirements as to the frame rate and image illumination, quality of recovering from occluded situations and others.