Article presents results of research concerning condition of school pedagogy as a subdiscipline. Study was performed by Zespół Zadaniowy Pedagogiki szkolnej under the auspices of PAN. The condition of subdiscipline was described as: presence of formal entities of school pedagogy in universities, academic and didactic activity on subject school pedagogy. Quantitative and qualitative description underlies to preliminary findings concerning condition of school pedagogy.

Until recently, Festuca arietina was practically an unknown species in the flora of Eastern Europe. Such a situation can be treated as a consequence of insufficient studying of Festuca valesiaca group species in Eastern Europe and misinterpretation of the volume of some taxa. As a result of a complex study of F arietina populations from the territory of Ukraine (including the material from locus classicus), Belarus and Lithuania, original anatomy, morphology and molecular data were obtained. These data confirmed the taxonomical status of F arietina as a separate species. Eleven morphological and 12 anatomical characters, ITS1-5.8S-ITS2 cluster of nuclear ribosomal genes, as well as the models of secondary structure of ITS1 and ITS2 transcripts were studied in this approach. It was found for the first time that F arietina is hexaploid (6x = 42), which is distinguished from all the other narrow-leaved fescues by specific leaf anatomy as well as in ITS1-5.8S-ITS2 sequences. Molecular data indicating possible hybridogenous origin of F arietina, fall in line with the anatomical-morphological data and explain the tendency toward sclerenchyma strands fusion with formation of a continuous ring in F arietina, as well as E arietina ecological confinement to psammophyte biotopes.

The purpose of the study was an assessment of LiDAR point clouds for automating the mapping of land use and land cover changes, mainly land abandonment and the process of secondary forest succession. Detailed information about land cover was determined based on airborne laser scanning data. The presented study focuses on the analysis of the spatial range and structure of vegetation. The study area was located in Milicz district in the voivodeship of Lower Silesia – the central west part of Poland. The areas of interest were parcels where agricultural land had been abandoned and forest succession processes had progressed. Analysis of the spatial range of the secondary forest succession was carried out using a reclassified nDSM. Reclassification of the nDSM was done using > 1 m, > 2 m and > 3 m for the pixel values, representing the height of vegetation above the ground. Parameters such as height of vegetation, standard deviation of height and cover density were calculated, to show the process of the increase in forest succession on abandoned agricultural land. The results confirmed a discrepancy between the cadastral data and the actual use of the plots. In the study area, more than three times as much forested and wooded area was detected than had been recorded in official databases. Analyses based on airborne laser scanning point clouds indicated significant diversity in the vertical and horizontal structure of vegetation. The results demonstrated gradual succession of greenery in the research area.

The aim of this paper is to analyze the concept of the digital Leviathan as it appears in literature in the middle field between philosophy of technology and social philosophy. The digital Leviathan, beyond the obvious reference to the classic Hobbesian concept, is a continuation of what Antonio Negri and Michael Hardt called ‘the Empire’ and Benjamin Bratton named ‘the Stack’. The key insight, as I argue in this paper, is to look at this digital Leviathan as an ongoing construction process, and therefore in a processual way that allows us to extract important characteristics of this global techno‑political construct. In this text, I point out that the development of the digital Leviathan is centrifugal and devoid of a top‑down plan indicating the target effects or its final shape, which results from its subordination to J.F. Lyotard’s performativity criterion, as well as its totalizing feature. It is also manifested by the fact that its expansion involves us all. I also point out how the digital Leviathan can be a deadly final achievement on the way from Reason, through rationality, to the madness of rationalization. I discuss the consequences that the development of Leviathan has on our ability to think in general, and in particular on the conceptualization of Leviathan itself. I also associate it with an attempt to criticize the utopian mode of thinking, accepting the conditions of ‘non‑place’ (in accordance with the thought of Negri and Hardt), which, following M. Heidegger, detaches us from the place and location that should be the basis of thinking.

Heat transport when two surfaces of solids come into contact is an important phenomenon in many metallurgical processes. Determining the boundary conditions of heat transfer allows to obtain the correct solutions of the heat conduction equation. The paper presents models for determining the heat transfer coefficient between steel materials in contact. Experimental tests were carried out to measure the temperature changes of the contacting samples made of steel S235 (1.0038) and steel 15HM (1.7335) under the pressure of 10, 15 and 20 MPa. There was a large temperature difference between the samples. The results of the experiment were compared with numerically calculated temperatures and the value of the heat transfer coefficient was determined at different pressure values depending on the time.

The main purpose of the present paper is to distinguish water located in various types of pores contained within cement paste. The water sorption isotherm is the starting point of the experimental analysis. The investigation was conducted employing the conventional gravimetric method on cement paste composed with w/c=0.5. The investigation was conducted for the following relative humidity values: 11%, 54%, 75%, 84%, 93%, 97% and 100%. Once samples reached the equilibrium water content they were investigated by means of differential scanning calorimetry (DSC), which enabled us to record exothermic peaks corresponding to the crystallization of different water portions. Moreover, we intended to investigate the thermodynamic characteristics of the liquid phase confined within cementitious materials. Hence, the artificial pore solution was prepared. In order to determine the phase transition temperature and the amount of formed ice, the solution was used to saturate silica gel, which is a chemically passive material. Then the thermal analysis was conducted.