Historical reenactors are not merely mad eccentrics; they are also earnest history aficionados eager for us to learn from the past – says Kamila Baraniecka-Olszewska from the PAS Institute of Archaeology and Ethnology in Warsaw.

Wola Justowska has long been thought of as the most attractive urban villa district of Krakow. A timber church from the XVI century that had originally been built in Komorowice Śląskie was relocated here in the year 1948, subsequently burning down a fire in 1978 in unknown circumstances. It had been rebuilt soon after, only to be set on fire a second time in 2002. After discussing numerous ideas and locations of its reconstruction, the design team developed a final version of its design, which featured the reconstruction of the church in its original location – in accordance with the will of the residents of Wola – which had been preceded by appropriate landscape analyses. The design calls for the reconstruction of the timber church in a slightly modified manner and placing it upon a concrete plinth, which is to be partially sheltered by the varied terrain around it. The aim of this idea was similar to that of the initial reconstruction, namely, to reconcile the form of the historical building that is to be reconstructed with the modern needs of the parish.

The article presents in a sketch of the history and the state of research of Polish etymological studies from Aleksander Brückner to Wiesław Boryś on the Slavic and Indo‑European background. The paper also discusses the different types of etymological dictionaries and suggests the directions of further research.

The restored Royal Castle in Warsaw includes original decorative pieces that link it back to its illustrious past from before WWII

Conservation of the Old Town Zamość began to realize almost a hundred years ago. Then the eminent preachers of culture in the early period. 20.year inter-made idea of restoring the prestige of the works of Polish culture. The idea of protecting national cultural heritage grew gradually until such time as the first scientific research, development of standards and principles of care and maintenance. Today Zamość was inscribed on the UNESCO World Cultural Heritage. Many things made, much remains to be done.

The paper presents a procedure for correction of the error of an ECG signal, introduced by the skin-electrode interface. This procedure involves three main measuring-calculating stages: parametrical identification of the mathematical model of the interface, realized directly before the diagnostic measurements, registration of the signal at the output of electrodes as well as reconstruction of the input signal of the interface.

The first two stages are realized in the on-line mode, whereas the operation of signal reconstruction presents a numerical task of digital signal processing and is realized in the off-line mode through deconvolution of the registered signal with the transfer function of the skin-electrode interface.

The aim of the paper is to discuss in detail the procedure of parametric identification of the skin-electrode interface with the use of a computer system equipped with a DAQ card and LabVIEW software. The algorithm for error correction introduced by this interface is also presented.

This paper considers the problem of reconstructing a class of generalized sampled signals of which a special case occurs in, e.g., a generalized sampling system due to non-ideal analysis basis functions. To this end, we propose an improved reconstruction system and a reconstruction algorithm based on generalized inverse, which can be viewed as a reconstruction method that reduces reconstruction error as well. The key idea is to add an additional channel into a generalized sampling system and apply the generalized inverse theory to the reconstruction algorithm. Finally, the approach is applied, respectively, to an oscilloscope, which shows the proposed method yields better performance as compared to the existing technique.

In this paper, we present some useful results related with the sampling theorem and the reconstruction formula. The first of them regards a relation existing between bandwidths of interpolating functions different from a perfectreconstruction one and the bandwidth of the latter. Furthermore, we prove here that two non-identical interpolating functions can have the same bandwidths if and only if their (same) bandwidth is a multiple of the bandwidth of an original unsampled signal. The next result shows that sets of sampling points of two nonidentical (but not necessarily interpolating) functions possessing different bandwidths are unique for all sampling periods smaller or equal to a given period (calculated in a theorem provided). These results are completed by the following one: in case of two different signals possessing the same bandwidth but different spectra shapes, their sets of sampling points must differ from each other.

The paper presents the results of diachronic analysis of independent grammatical morphemes which function in the grammatical systems of Chadic languages. The following markers are being considered: genitive-linking morpheme, subject and object markers, copula, focus marker. Etymologically, the markers are traced back to Chadic (and Afroasiatic) system of determiners identified by the three phonological elements, namely *n, *t, and *k which have their vestiges in contemporary systems. It is claimed that what is a retention on phonological ground, contributes to innovation processes on the grammatical level.

The tarsometatarsus, a compound bone from the lower leg in birds, is the most important skeletal element in fossil penguin taxonomy, especially in the case of early members of this group. However, any attempt to go beyond the problem of mere classification obviously requires the better understanding of osteological traits under consideration. This in turn touches on the issue of interplay between bone and concomitant soft−tissue structures, such as muscles, tendons and vessels. This paper focuses on the more holistic comprehension of the tarsometatarsal section of the Eocene penguin foot, based on the analysis of the myology and the vascular system of its modern counterparts. A number of graphical reconstructions are provided with a discussion of the role of the hypotarsus and inter− metatarsal foramina.

The problem of reconstructing an unknown disturbance under measuring a part of phase coordinates of a system of linear differential equations is considered. Solving algorithm is designed. The algorithm is based on the combination of ideas from the theory of dynamical inversion and the theory of guaranteed control. The algorithm consists of two blocks: the block of dynamical reconstruction of unmeasured coordinates and the block of dynamical reconstruction of an input.

We present here a few thoughts regarding topological aspects of transferring a signal of a continuous time into its discrete counterpart and recovering an analog signal from its discrete-time equivalent. In our view, the observations presented here highlight the essence of the above transformations. Moreover, they enable deeper understanding of the reconstruction formula and of the sampling theorem. We also interpret here these two borderline cases that are associated with a time quantization step going to zero, on the one hand, and approaching its greatest value provided by the sampling theorem, on the other

The purpose of this study is to solve the efficiency and reliability problems of upstream water intake structures for energy and irrigation systems in the region of the Republic of Azerbaijan. Among the methods used in the study, experimental, analytical, and modelling methods should be distinguished. During the study, analyses and field investigations of main structures, and energy and irrigation systems in the foothills were conducted to identify the reasons for the low efficiency and reliability of existing old water intake structures and reduce their negative impact on the environment. The results of the study showed that many water intake structures built on small rivers are not only in poor working condition but also do not meet modern environmental requirements. Many of these structures were built more than thirty years ago and have not been modernized or reconstructed in accordance with new technologies and requirements. As a result of the study, recommendations were prepared for the design of new water intake structures that meet all modern environmental requirements and guarantee the more efficient use of water resources. These new facilities will also help to reduce water losses during the overflow process, which will make the use of water more cost-effective. Additionally, one of the main outcomes is the developed useful model, which pertains to the field of hydroengineering construction for water intake from mountain and foothill rivers, serving as an additional barrier to reduce the influx of large sediment into the reservoir.

The war, which broke out in Ukraine on the 24th of February 2022, has left cities and infrastructure destroyed. While hostilities continue, war damage, including architectural monuments, is being recorded. The following paper is part of these activities. It aims to emphasise the scale of the destruction of cultural heritage sites and to identify the possibilities of their reconstruction and restoration. This study analyses international doctrinal documents and recommendations on the protection of historic monuments (e.g., ICOMOS), Ukrainian regulations and the literature on the reconstruction of historic urban layouts and architecture after the Second World War, primarily in Poland. The research is also based on methods used in restoration work, architectural survey documentation, and historical and comparative analysis. The war damage (as of May 2022) is discussed in general.
Russian rocket attacks are inflicting damage to sites in almost all of Ukraine, but the Kyiv, Chernihiv, Sumy, Kharkiv, Donetsk and Lugansk, Mykolaiv and Kherson regions have suffered the most. This paper presents examples of destruction in selected regions surveyed directly by the authors — the Ukrainian capital Kyiv, Chernihiv and Mykolaiv regions. In Kyiv, mainly residential buildings and shopping centres have been destroyed, whereas in the Mykolaiv region the scale of destruction has been greater, including residential build- ings, schools and Orthodox churches. The conclusions provide proposals for the post-war reconstruction of selected buildings.

In the research on historic, composed green areas various computer technologies are applied, including among others reconstruction ideograms and virtual spatial models. They are created on the basis of historical cartographic materials, among which Prussian maps Urmesstichblatts and Messtischblatts deserve special attention as they provide extraordinarily useful and often otherwise unavailable information concerning the system of spatial composition.

The article presents a method of procedure on the example of selected research objects. Such studies are extremely useful in the process of research, analyses and documentation of the authentic state of historical sites. Moreover, they provide a significant material for further analyses concerning revalorisation and creation of the cultural landscape.

An original model based on first principles is constructed for the temporal correlation of acoustic waves propagating in random scattering media. The model describes the dynamics of wave fields in a previously unexplored, moderately strong (mesoscopic) scattering regime, intermediate between those of weak scattering, on the one hand, and diffusing waves, on the other. It is shown that by considering the wave vector as a free parameter that can vary at will, one can provide an additional dimension to the data, resulting in a tomographic-type reconstruction of the full space-time dynamics of a complex structure, instead of a plain spectroscopic technique. In Fourier space, the problem is reduced to a spherical mean transform defined for a family of spheres containing the origin, and therefore is easily invertible. The results may be useful in probing the statistical structure of various random media with both spatial and temporal resolution.

Many imaging techniques are playing an increasingly significant role in clinical diagnosis. In the last years especially noninvasive electrical conductivity imaging methods have been investigated. Magnetoacoustic tomography with magnetic induction (MAT-MI) combines favourable contrast of electromagnetic tomography with good spatial resolution of sonography. In this paper a finite element model of MAT-MI forward problem has been presented. The reconstruction of the Lorentz force distribution has been performed with the help of a time reversal algorithm.

The sensor-shifted stereo camera provides the mechanism for obtaining 3D information in a wide field of view. This novel kind of stereo requires a simpler matching process in comparison to convergence stereo. In addition to this, the uncertainty of depth estimation of a target point in 3D space is defined by the spatial quantization caused by the digital images. The dithering approach is a way to reduce the depth reconstruction uncertainty through a controlled adjustment of the stereo parameters that shift the spatial quantization levels. In this paper, a mathematical model that relates the stereo setup parameters to the iso-disparities is developed and used for depth estimation. The enhancement of the depth measurement accuracy for this kind of stereo through applying the dithering method is verified by simulation and physical experiment. For the verification, the uncertainty of the depth measurement using dithering is compared with the uncertainty produced by the direct triangulation method. A 49% improvement of the uncertainly in the depth reconstruction is proved.

The agglomeration of particles is a process that modifies the physical properties of a product originally manufactured as a powder. During milk powder agglomeration of fluidized bed, resulting agglomerates are sufficiently porous to improve the solubility of the final product but, at the same time, their rigidity decreases and agglomerates can be destroyed during packing. The porosity and rigidity properties depend on both the volume and shape characteristics of the agglomerates. This paper presents a three-dimensional reconstruction technique based on a laser displacement sensor (LDS) applied to characterize milk agglomerates. This technique allows three-dimensional scanning to estimate particle volume and extract shape parameters such as: sphericity, elongation and flatness ratio, shape factor and aspect ratio. This technique was implemented using a mechatronic device with two degrees of freedom. The device is composed of an angular positioning system to rotate the agglomerate and a linear positioning system to displace the LDS. Experimental result allows agglomerates classification according to shape parameters

The quality of the supplied power by electricity utilities is regulated and of concern to the end user. Power quality disturbances include interruptions, sags, swells, transients and harmonic distortion. The instruments used to measure these disturbances have to satisfy minimum requirements set by international standards. In this paper, an analysis of multi-harmonic least-squares fitting algorithms applied to total harmonic distortion (THD) estimation is presented. The results from the different least-squares algorithms are compared with the results from the discrete Fourier transform (DFT) algorithm. The algorithms are assessed in the different testing states required by the standards.

The paper presents a new method of surface topology reconstruction from a white light interferogram. The method is based on interferogram modelling by complex exponents (Prony method). The compatibility of white light interferogram and Prony models has already been proven. Effectiveness of the method was tested by modelling and examining reconstruction of tilted and spherical surfaces, and by estimating the reconstruction accuracy.

My series “Some Berber Etymologies” is to gradually reveal the still unknown immense Afro-Asiatic heritage in the Berber lexical stock. The first part with some miscellaneous Berber etymologies was published back in 1996. Recently, I continued the series according to initial root consonants1 in course of my research for the volumes of the “Etymological Dictionary of Egyptian” (abbreviated as EDE, Leiden, since 1999, Brill)2 with a much more extensive lexicographical apparatus on the cognate Afro-Asiatic daughter languages. As for the present part, it greatly exploits the results of my ongoing work for the the fourth volume of EDE (analyzining the Eg. lexical stock with initial n-). The present part contains etymologies of Berber roots with initial *n- followed by dental stops. The numeration of the entries continues that of the preceding parts of this series. In order to spare room, I quote those well-attested and widespread lexical roots that appear common Berber, only through a few illustrative examples. The underlying regular consonant correspondences between Berber vs. Afro-Asiatic agree with those established by the Russian team of I.M. Diakonoff and summarized by A.Ju. Militarev (1991, 242–3).