A Field Programmable Gate Array (FPGA) Based Non-Linear Filters for Gas Turbine Prognostics

The removal of noise from signals obtained through the health monitoring systems in gas turbines is an important consideration for accurate prognostics. Several filters have been designed and tested for this purpose, and their performance analysis has been conducted. Linear filters are inefficient in the removal of outliers and noise because they cause smoothening of the sharp features in the signal which can indicate the onset of a fault event. On the other hand, non-linear filters based on image processing methods can provide more precise results for gas turbine health signals. Among others, the weighted recursive median (WRM) filter has been shown to provide greater accuracy due to its weight adaptability depending on the signal type. However, sampling data at high rates is possible which needs hardware implementation of the filter. In this paper, the design, simulation and implementation of WRM filters on the FPGA (Field Programmable Gate Arrays) platforms Vivado Design Suite by Xilinx and Quartus Pro Lite Edition 19.3 has been performed. The architectural detail and performance result with the FPGA filters when subjected to abrupt and gradual fault signal is presented.

Architrave Slab of the Entrance into the Gate Church of Funa

The gate church of the Theodorite castle near the village of Funa appeared in 1459 and existed to 1778. Left unattended later on, it became decayed, quickly dilapidated, and finally turning into ruin after the earthquake of 1927. The experts’ conclusions concerning its origin are based mainly on the typical features of the architectonics and carved decoration of the structure, correlated with the traditions of Armenian architecture and Seljuk ornamentation. The most exquisite architectural detail of the building is the large slab with relief ornamentation that overlapped from outside the doorway of the south entrance. Two iconographic sources are published for the first time to supply new information about the slab in question along with the results of a substantive study of a large fragment of the artefact which was found by chance outside the castle short time ago. Almost a half of the composition that adorned the outermost part of the architrave survived. Its completely lost middle part can be reconstructed reliably by the photograph taken by N. N. Klepinin and the drawing by D. M. Strukov. The ornamental motif of the slab is one of the most popular in mediaeval art, being typical of the eastern decorative tradition. It is still not possible to discover the origin and exact date of the architrave which was secondary used in the church of 1459. Stylistically, structurally, and technologically it is comparable with carved architectural details of many main buildings of the capital town of Theodoro, which were erected in the 1420s. Therefore, the slab in question possibly has the same chronology, but still it could be made even earlier.

Housing and Honouring the Saints: English Medieval Architecture and the Cult of Relics

This article considers the architecture of English medieval churches and how it was affected by its function as a setting for the cult of saints. It looks at the impression which the patrons of medieval buildings were hoping to make on the minds and spirits of those who visited them. It is not concerned so much with the functional planning issues surrounding access, security, and the management of pilgrims as it is with the symbolic content of those larger spaces within which the shrine and its immediate surroundings are contained and visually celebrated. Plans, forms, and decoration carrying specific associations with prestigious buildings in Rome are considered in relation to some early medieval buildings. The new work at Canterbury, following the fire of 1174, created a new and influential architectural language adopted by other cathedrals in which aspects of the saint could be signaled by architectural detail and decoration. The article ends with the thirteenth-century Chapel of the Nine Altars at Durham as a setting for the shrine of Cuthbert.

Między klasyką a awangardą. Szpital Morski na Oksywiu projektu Mariana Lalewicza

Between the classic and the avant‑garde. The Maritime Hospital in Oksywie designed by Marian Lalewicz The aim of the article is to present the architectural legacy of the Maritime Hospital in Gdynia, a military investment from the early 1930s, which was created in the office of a significant and renowned architect, Marian Lalewicz. A distinguished designer, representative of academic classicism, he had in his portfolio, among others, several buildings in Gdynia so crucial for the Polish Navy. In 1930 he accepted an extraordinary challenge which was to build a military hospital of a wide spectrum of operations. It was to be the answer to the demands of the growing personnel and their families while at the same time constituting a form of medical security for the naval port. The project, realised as the first modern hospital building in the developing port city, was modernistic and exceptionally functional. It was presented at an opinion‑forming national exhibition and in professional magazines, as it complimented the most important proposals in terms of construction and inventory of hospitals, taking into consideration the influence of nature on treatment and comfort quality improvement of patients. Generally, the hospital comprised two wards: surgical and internal diseases, with additional infectious diseases subdivision. Also, a dental clinic operated there, perhaps also a venereal clinic, an operating theatre, an X‑ray facility, physiotherapy surgery, a laboratory, a pharmacy, a dissection room and a mortuary. From the ground floor of the building there was an easy access to a terrace as well as to verandas, which were duplicated on the first floor. The loggias on two of the storeys were also exceptional. A good location of the hospital on a hillside, strong insolation and the fresh sea air were all elements of the processes of treatment and convalescence. The facility was manned with mixed personnel, both civilian and military. The text broadly describes the architectural values of the structure, spatial arrangement and facade composition adjoining the function it served and juxtaposed with similar European realisations. Also, the architectural detail is brought to attention, both in the layer of the facade as in the interior of the building, which have been destroyed in the last few years due to renovations. Opened in the spring of 1932, the building served its function until the outbreak of World War II and has remained a medical facility until today – currently it serves as a medical clinic. In itself, it is the proof of the timelessness of the project and its functional arrangement, after nearly 90 years of its completion.

THE CONCEPT OF LIDAR DATA QUALITY ASSESSMENT IN THE CONTEXT OF BIM MODELING

<p><strong>Abstract.</strong> LiDAR technology has revolutionized the area of 3D data acquisition. It is possible to obtain in a very fast and accurate way geometric and other information for a large area . Along with the development of design technology, LiDAR point clouds are often used to create inventory models of building objects and installations. This paper presents the possibilities of assessing LiDAR data for BIM modeling. The areas in which the assessment and description of obtained TLS data is important are presented. In addition to the attributes for assessing the quality of spatial data contained in the ISO 19157 standard, a density parameter was proposed. Examples of point clouds with different density for the architectural detail are presented in the final part of the work. For the attributes describing LiDAR data sets the levels of importance have been proposed for.</p>