The objective of this research paper is to identify the surveying and legal problems occurring as part of the practical implementation of transforming the right of perpetual usufruct into ownership title in the context of the new regulations that have been in force since 1 January 2019. This is a consequence of the Act of 20 July 2018 on the transformation of the right of perpetual usufruct of the land developed for residential purposes into the ownership title to this land. The research problem of this study is the analysis of the real estate subjected to the transformation of the right of perpetual usufruct into the ownership title in the context of the new regulations in force since 1 January 2019. The conducted research has resulted in the identification of the problems related to the interpretation of these new regulations, also in defining the scope of real properties subjected to the transformation, issuing certificates confirming the transformation, and entering the effects of this transformation into land and mortgage registers. These problems may hinder the practical implementation of the transformation process as well as hamper the execution of real estate transactions. In order to illustrate the implementation scale of these new regulations, the author of this research paper has defined the purposes for which the real properties in the selected city were let into perpetual usufruct, the approximate scope of the properties subject to the transformation and the financial consequences of this process.

In the paper a transformation between two height datums (Kronstadt’60 and Kronstadt’86, the latter being a part of the present National Spatial Reference System in Poland) with the use of geostatistical method – kriging is presented. As the height differences between the two datums reveal visible trend a natural decision is to use the kind of kriging method that takes into account nonstationarity in the average behavior of the spatial process (height differences between the two datums). Hence, two methods were applied: hybrid technique (a method combining Trend Surface Analysis with ordinary kriging on least squares residuals) and universal kriging. The background of the two methods has been presented. The two methods were compared with respect to the prediction capabilities in a process of crossvalidation and additionally they were compared to the results obtained by applying a polynomial regression transformation model. The results obtained within this study prove that the structure hidden in the residual part of the model and used in kriging methods may improve prediction capabilities of the transformation model.

The “Wild East” – or: The 1990s in Guided City Tours in Central and Eastern Europe.
Using the example of recent English-language communism tours in Central and Eastern Europe, this article presents the transformation from communism to democracy as told in the international tourism industry. Young guides, being themselves “children of the transformation”, portray the 1990s as a strange time and period of “anything goes”. Along with various practices of (self-)exoticization, a fundamental paradox of such “alternative” city tours is discussed – namely, the fact that many guides articulate a critical view of how the economic transformation took place and openly criticize the excesses of global capitalism. At the same time, they are them-selves successful entrepreneurs in a niche of the tourism industry that makes its profit from interpreting precisely these contradictions.

Paper deals with examinations of properties of shape memory alloy actuators. Authors describe design of own laboratory stand for obtaining electro-thermo-mechanical characteristics of SMA wires (maximum length 900 mm). The stand allows for semi-automatic measurements of voltage and current (supplying the actuator), temperature of wire and its extension. Data acquisition and control signals are realized by PC computer. All elements of the measuring system are connected by GPIB network (IEEE 488.2 standard). Control program for static measurements was written in G language (LabVIEW environment). Temperature is measured using infrared camera Flir A325. Displacement measurement system contains optical sensor (converting piston movement into series of pulses), pulses counter, PWM signal generator (PWM signal fulfillment is proportional to number of pulses), lowpass filter and buffer conditioning external signal. For dynamic measurements data recording is performed using digital oscilloscope Tektronix MSO 2024 equipped with four separated channels and digital filter. Wide range of examinations of several SMA wires allowed for drawing its exploitative characteristic helpful for practical use. It shows length change of actuator as a function of mechanical load (Fig. 10). Finally some example static as well as dynamic characteristics are presented and short discussion is carried out.

The paper presents a scaling approach to the analysis of coercivity. The Widom-based procedure of coercivity scaling has been tested for non-oriented electrical steel. Due to insufficient results, the scaling procedure was improved relating to the method proposed by Van den Bossche. The modified procedure of coercivity scaling gave better results, in comparison to the original approach. The influence of particular parameters and a range of measurement data used in the estimations on the final effect of the coercivity scaling were discussed.

The paper proposes a methodology useful in verification of results of dilatometric tests aimed at determination of temperatures defining

the start and the end of eutectoid transformation in the course of ductile cast iron cooling, based on quenching techniques and

metallographic examination. For an industrial melt of ductile cast iron, the effect of the rate of cooling after austenitization at temperature

900°C carried out for 30 minutes on temperatures TAr1

start and TAr1

end was determined. The heating rates applied in the study were the

same as the cooling rates and equaled 30, 60, 90, 150, and 300°C/h. It has been found that with increasing cooling rate, values of

temperatures TAr1

start and TAr1

end decrease by several dozen degrees.

In this study a group of selected transformation kinetics equations is applied to describe the isothermal ferritic transformation in austempered ductile iron (ADI). A series of dilatometric tests has been carried out on ADI at different temperatures. The obtained experimental data are utilized to determine the parameter values of the considered kinetic equations. It is found that the transformation kinetics models by Starink, Austin and Rickett are substantially more effective at describing the ferritic transformation in ADI than the much celebrated Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation. Furthermore, it is demonstrated that evaluating the kinetic parameters using the least squares method instead of calculating them from vastly used formulas can significantly improve the accuracy of the JMAK model’s predictions.

The article is a review of the book edited by Krzysztof Brzechczyn, The Paths of Transformation. Theoretical Approach and Empirical Descriptions, Poznań 2003.

“Isolation would be most unfortunate. We would be doing science in our own company, completely indifferent to what is happening outside our own universe. This would be totally self-destructive and I hope it will never happen,” says Professor Michał Głowiński in an interview with Grzegorz Wołowiec, titled “A Time Unexpected,” a fragment of which is presented below.

Dr. Artur Obłuski of the University of Warsaw tells us about research into political, social, and religious transformations in Sudan in the Middle Ages, the present-day importance of archaeological discoveries, and the meaning of the word “UMMA.”

In this article I make a critical analysis of educational policy in Poland during the 25 years of the political transformation. I try to refer to the Polish thoughts and practices of teaching experience in the period of 1989–2014. What is more, I present experiences of anti-socialist opposition during the socialist period. They influenced on impression in the works and commitments of many scientists and a new generation of academics. Furthermore, I indicate how my generation after 1989 went into the road of scientific autonomy and / or independence in the field of government and private education. Benchmark for these analyzes build up the hopes which we tied up with the Polish revolution of non- violence. Moreover, there was a strong disappointment, which revealed over the years due to the departure of distinctive political formation of the Third Republic of the ideals and the phenomenon of Polish „Solidarity” movement, and civil society, which included the move away from the base of participatory democracy. Finally, I look at how education as a science and practice of education fit into democratization of the Polish state and society. The key meaning for me has the perception of education as a common good, as environments and entities, institutions or management practices which participate in the democratic society. To sum up, this society is constantly in the period of recovery from years of experience not only fascist, but Bolshevik totalitarianism, too.

The paper presents the history of the development path of the Warmińsko-Mazurskie Voivodeship. The aim of the study was to identify factors conducive to and restrict regional transformation in Warmia and Mazury and to verify the development path of the voivodeship. According to the study, the factors that positively infl uenced the development of the region in the recent period were, among others: EU funds and natural resources that form the basis of a regional economy. The factors that inhibit the development of the region include, among other:. lack of trust, intensifi cation of competition and low transport accessibility of the voivodeship.

In the paper a novel mathematical model of electromechanical actuator is presented. It is based on application of Hamiltonian equations in the description of electromechanical energy conversion. It results in employment of flux linkages as state variables in the state space equations. For simplicity only a 3-phase wye connected stator winding without a neutral wire is considered in detail. The procedure can be generalised to any number of phases. Topology-based approach is used in the model implementation. Procedures for evaluation of all quantities (currents, energy/coenergy, electromagnetic torque) present in model equations are described. Eddy currents and hysteresis phenolmenon are neglected in formulation of the model to enable application of state-space description.

This work presents the qualitative and quantitative changes in the products of isothermal transformation (reaction) in a ductile cast iron

austenite after supercooling to the temperature range Ar1. The austenitizing temperature considered in this work was 900, 960 or 1020°C.

The eutectoid reaction was investigated by metallographic examination at a holding temperature right below Ar11 (820°C) or right below

Ar12 (760°C). The quantitative metallographic examination was carried out with a light microscope (LM). The initial transformation stage

products were identified with a transmission electron microscope (TEM). The selected samples were studied for chemical

microsegregation of manganese, silicon, phosphorus, and carbon with an X-ray microanalyser (MAR). The tested cast iron material was

found to predominantly feature a eutectoid reaction in the metastable system the ratio of which was increasing with the austenitizing

temperature. The austenitizing temperature was found to be conducive to the evolution kinetics of individual phases and to the

graphitization kinetics of the eutectoid cementite that was formed during the contemplated reaction.

Post-1989 feminist critique in Poland tried to establish itself academically not only in a social landscape of immense political and economic change, but also in a discourse that framed feminist arguments as communist relics. In analysing three major books in feminist Polish literary studies from the 1990s, we find there is a main interest on the condition of women and the specifics of female writing. This trending current propagates the introduction and stabilisation of two categories: the description of the female condition as an academic discipline based on political neutrality and objectivity, and the discipline of womanhood itself, framed by the enhancement of stereotypically understood femininity based on female corporeality and feeling. This main strand of Polish feminist critique of the 1990s thus affirms an apolitical and normative understanding of academic research and of gender roles, re-staging a bourgeois discourse that dismisses political engagement and critical deconstruction.

A mathematical model of austenite - bainite transformation in austempered ductile cast iron has been presented. The model is based on a model developed by Bhadeshia [1, 2] for modelling the bainitic transformation in high-silicon steels with inhibited carbide precipitation. A computer program has been developed that calculates the incubation time, the transformation time at a preset temperature, the TTT diagram and carbon content in unreacted austenite as a function of temperature. Additionally, the program has been provided with a module calculating the free energy of austenite and ferrite as well as the maximum driving force of transformation. Model validation was based on the experimental research and literature data. Experimental studies included the determination of austenite grain size, plotting the TTT diagram and analysis of the effect of heat treatment parameters on the microstructure of ductile iron. The obtained results show a relatively good compatibility between the theoretical calculations and experimental studies. Using the developed program it was possible to examine the effect of austenite grain size on the rate of transformation.

Determined was quantitative effect of nickel equivalent value on austenite decomposition degree during cooling-down castings of Ni-MnCu cast iron. Chemical composition of the alloy was 1.8 to 5.0 % C, 1.3 to 3.0 % Si, 3.1 to 7.7 % Ni, 0.4 to 6.3 % Mn, 0.1 to 4.9 % Cu, 0.14 to 0.16 % P and 0.03 to 0.04 % S. Analysed were castings with representative wall thickness 10, 15 and 20 mm. Scope of the examination comprised chemical analysis (including WDS), microscopic observations (optical and scanning microscopy, image analyser), as well as Brinell hardness and HV microhardness measurements of structural components.

Shape memory alloys are characterised by interesting properties, i.e. shape memory effect and pseudoelasticity, which enable their increasing application. Thermomechanical aspects of martensitic and reverse transformations in TiNi shape memory alloy subjected to tension tests were investigated. The stress-strain characteristics obtained during the tests were completed by the temperature characteristics. The temperature changes were calculated on the basis of thermograms determined by an infrared camera. Taking advantages from the infrared technique, the temperature distributions on the specimen’s surface were found. Heterogeneous temperature distributions, related to the nucleation and development of the new martensite phase, were registered and analysed. A significant temperature increase, up to 30 K, was registered during the martensitic transformation. The similar effects of the heterogeneous temperature distribution were observed during unloading, while the reverse transformation, martensite into austenite took place, accompanied by significant temperature decrease.

The aim of the performed experiments was to determine the influence of deformation and of austenitization temperature on the kinetics of phase transformations during cooling of high-carbon steel (0.728 wt. % C). The CCT and DCCT diagrams for austenitization temperature 940°C and DCCT diagram for austenitization temperature 1000°C were constructed with the use of dilatometric tests. On the basis of obtained results, a featureless effect of austenitization temperature and deformation on the kinetics of phase transformations during cooling of investigated steel was observed. Critical cooling rates for the transformation of martensite in microstructure fluctuated from 5 to 7°C · s–1 (depending on the parameters of austenitization and deformation), but only at cooling rates higher than 8°C · s–1 a dominant share of martensite was observed in the investigated steel, which resulted in the significant increase of hardness.

The paper presents the analysis of temperature fields, phase transformations, strains and stresses in a cuboidal element made from S235 steel, surfaced with multipass GMA (Gas Metal Arc) method. The temperature field is described assuming a dualdistribution heat source model and summing up the temperature fields induced by the padded weld and by the electric arc. Dependence of stresses on strains is assumed on the basis of tensile curves of particular structures, taking into account the influence of temperature. The calculations were carried out on the example of five welds in the middle of the plate made of S235 steel. The simulation results are illustrated in graphs of thermal cycles, volume shares of structural components and stresses at the selected points of cross-section, and the temperature and strain distributions in the whole cross section.