Universal filtered multi-carrier (UFMC) is being studied as the favourable waveforms supporting the visible light communication broadcasting systems. However, the UFMC system faces a serious performance degradation on the transmitter side due to its high peak-to-average power ratio (PAPR). High PAPR of the signal is an analytical intention parameter for mobile networks, and it is necessary to minimize it as much as possible. This paper focuses on the PAPR reduction of the UFMC scheme. An efficient hybrid method of the PAPR reduction has been proposed and analysed through the Matlab™ simulation. The proposed hybrid scheme consists of a mixture of the selected-mapping method and the discrete Hartley transform precoding for a UFMC system (SLM-DHT-P-UFMC). The simulation results show that the proposed hybrid system has a better PAPR reduction performance compared to traditional SLM-UFMC and DHT-P-UFMC systems. Hence, SLM-DHT-P-UFMC is considered to be the suggested scheme in visible light communication broadcasting systems.

The putting on of spectacular ceremonies finalizing the acts of beatification and canonization of Stanisław Kostka, taking place in the principal Jesuit centers of the Polish-Lithuanian Commonwealth, was an important artistic activity of modern times. The content programs of the decorations which accompanied the celebrations between 1606 and 1726, known to us from written sources, reflect the propaganda of the Kostka ceremonies. The oldest occasional decorations and outdoor shows taking place in the city of Jarosław had been organized on the initiative of his relative Anna née Kostka Ostrogska. They were organized in connection with the proclamation of Stanisław Kostka as Blessed by Pope Paul V in 1606. The theme of the decorations accentuated the importance of the moral values of this ascetic follower of the Counter-Reformation Church, while the widely used language of allegory defined his individual spiritual values and illustrated scenes from his life and miracles.
However, Stanisław Kostka soon became seen as an advocate of the Polish Lithuanian-Commonwealth in its military struggles in the East, especially in the conflict with the Ottoman Porte. After the victory of Chocim (Khotyn) in 1621 he was revered as the patron saint of the Polish knighthood, and after the victory at the Battle of Chocim in 1673 he was rapidly proclaimed (in 1674) one of the main patrons of the Kingdom of Poland and the Grand Duchy of Lithuania. It was this aspect of Kostka’s promotion that was used in the decorative themes of his thanksgiving ceremonies after the closing of the beatification process and the decree of canonization by Pope Clement XI in 1714. The decorations of the Jesuit Church in Lublin, described in detail in the records of the Society of Jesus (1715), explained and glorified the new role of the young saint. His role as a guarantor of peace and stability of the Commonwealth, revealed in God’s eternal plans, was presented through astral configurations and complicated semantic systems. Kostka’s canonization, which had raised the importance of the Polish-Lithuanian Commonwealth, as being linked to the papacy and the Catholic faith, was seen as the culmination of a great historical message and the revelation of the secret given to Poland, also recognizable through astral configuration.
The military and diplomatic triumph over the Ottoman Porte was considered a breakthrough moment, opening a period of happiness achieved thanks to Kostka’s intervention and the support of Heaven. The result of a united front in the battle with a common enemy was to achieve a state of happiness that strengthened the ecclesiastical and monarchical order, an idea taken up by the decorations seen in Jarosław and Vilnius, amongst others. The ad hoc political content was moved to the sphere of the monastic political philosophy and historical theology.
An allusion to the happy future that mathematicians had supposedly predicted was also included in the decorations. After the partition of Poland and the dissolution of the Jesuit order, the revival of the fading cult of Stanislaw Kostka took place in the Second Polish Republic, particularly during the jubilee celebrations of the 200th anniversary of his canonization in 1927. This was seen in the ceremony of bringing his relics from Rome to the new church in Rostków, which was attended by the President of the Republic of Poland Ignacy Mościcki. However, there was a significant change in semantics as Stanisław Kostka was now described as the patron saint of children and youth, frequent Holy Communion and felicitous vocational choices.

The paper is concerned with comparing the methods for determining the ferrite content in castings from duplex stainless steels. It uses Schaeffler diagram, empirical formula based calculation, image analysis of metallographic sample, X-ray diffraction and measurement with a feritscope. The influence of wall thickness of the casting on the ferrite content was tested too. The results of the experiments show that the casting thickness of 25 or 60 mm does not have a significant effect on the measured amount of ferrite. The image analysis of metallographic sample and the measurement with the feritscope appear to be the most suitable methods. On the contrary, predictive methods, such as Schaeffler diagram or empirical formula based calculation are only indicative and cannot replace the real measurements. X-ray diffraction seems to be the least suitable measuring method. Values of ferrite content measured in such a way often deviated from the values measured by image analysis and with feritscope.