Cold-formed structure connections utilizing gusset plates are usually semi-rigid. This paper investigates the behaviours of rectangular gusset plates in cold-formed connections of elements whose columns and beams are made with lipped back-to-back C-sections. Methods of calculating strength and stiffness are necessary for such semi-rigid joints. The main task of this paper is to determine a method capable of calculating these characteristics. The proposed analytical method could then be easily adapted to the component method that is described in part 1993-1-8 of the Eurocode. This method allows us to calculate both the strength and stiffness of rectangular gusset plates, assuming that the joint deforms only in plane. This method of design moment resistance calculation was presented taking into account that an entire cross-section shall reach its yield stress. A technique of stiffness calculation was presented investigating the sum of deformations acquired at the bending moment and from shear forces which are transmitted from each beam bolt group. Calculation results according to the suggested method show good agreement of laboratory experimental results of specimens with numerical simulations. Two specimens of beam-to-column connections were tested in the laboratory. Lateral supports were used on the specimens to prevent lateral displacements in order to better investigate the behaviour of the rectangular gusset plate in plane. Experiments were simulated by modelling rectangular gusset plates using standard finite element software ANSYS Workbench 14.0. Three-dimensional solid elements were used for modelling and both geometric and material nonlinear analysis was performed.
The paper presents achievements in gluing technique in steel and aluminium structures. Adhesives currently in use and available on the market are characterized from the point of view of their mechanical properties. Design rules of adhesive connections and basic methods for their calculations are mentioned. The most significant examples of the applications of those joints in steel as well as aluminium structures are shown.
Crossing borders: between literature and science – Italian culture of the twentieth and twenty-first centuries has offered significant examples of renewal through crossing boundaries between different disciplines. Several writers (Levi, Calvino, Gadda, Sinisgalli, Del Giudice, Giordano, Arpaia, Odifreddi) have overcome the dichotomy between the two cultures that was denounced by Charles Snow in 1959. Sixty years after the famous essay by Snow, the paper will show several examples of connections between literature and science, by using the concept of the “four frontier customs”: “the transit”, “the trespass”, “the alliance”, and “the conflict”.
The article discusses the problem with modifications of plans of water areas and the forms of their borders which have been inscribed into the history of all city structures related to water. It can be observed that the modifications made in recent decades very often concern the transformations of former industrial sites. Many such structural changes are taking place within signifi cant areas which have fragmented central parts of cities and created voids in the urban fabric. They are being applied to many former shipyards and ports. Research shows that the formation of new connections between land and water in these transformation processes is essential. More frequently, those conversions that are currently being realized change the constructions of wharves and lead to the development of plans drawing new borders between land and water. In these cases water is introduced into land areas and new land surfaces are being created over existing bodies of water. These operations can be considered extremely valuable in achieving the intended eff ects of transformations of post-industrial areas. They are perceived as an excellent possibility to strengthen the relationship between the city structure and water. At the same time they create an opportunity to achieve a high quality of architectural and landscape solutions and the quality of spaces in both social and economic terms.
Overseas mining investment generally faces considerable risk due to a variety of complex risk factors. Therefore, indexes are often based on conditions of uncertainty and cannot be fully quantified. Guided by set pair analysis (SPA) theory, this study constructs a risk evaluation index system based on an analysis of the risk factors of overseas mining investment and determines the weights of factors using entropy weighting methods. In addition, this study constructs an identity-discrepancycontrary risk assessment model based on the 5-element connection number. Both the certainty and uncertainty of the various risks are treated uniformly in this model and it is possible to mathematically describe and quantitatively express complex system decisions to evaluate projects. Overseas mining investment risk and its changing trends are synthetically evaluated by calculating the adjacent connection number and analyzing the set pair potential. Using an actual overseas mining investment project as an example, the risk of overseas mining investment can be separated into five categories according to the risk field, and then the evaluation model is quantified and specific risk assessment results are obtained. Compared to the field investigation, the practicability and effectiveness of the evaluation method are illustrated. This new model combines static and dynamic factors and qualitative and quantitative information, which improves the reliability and accuracy of risk evaluation. Furthermore, this evaluation method can also be applied to other similar evaluations and has a certain scalability.
The aim of the article to assess the functioning of the NewConnect market over 10 years from the organizer’s and participants’ perspective. This helps to diagnose the most important organizational advantages and problems of the Polish MTF, determine further development prospects and propose potential changes to neutralize the negative factors. To illustrate the problem, a comprehensive analysis will be made of aggregated statistical data from 2007–2017, which show the changes and trends on this market, and additionally include the data comparing the current state of the NewConnect market with other alternative markets organized by European stock exchanges. The conducted research does not allow to view the NewConnect market as an organizational success. The analysis identified a number of problems in the functioning of the Polish MTF, ranging from the inappropriate organization of the primary market, resulting in the admittance of too high a number of issuers of dubious credibility, to the consequences appearing on the secondary shares market. It does not give unambiguous grounds to expect positive prospects for the market development in the future. In order to stop unfavorable trends and to improve the issuers’ quality, a discussion on the regulations regarding issuers’ admission, i.e. the size of the minimum equity, IPO, capitalization and the issue price of the debuting company, should be initiated.
This article presents a comparative analysis of two poems, Stéphane Mallarmé’s ‘Soupir’ (1866) and Wacław Rolicz-Lieder’s ‘To My Sister’s Smile’, published in 1891. ‘Soupir’ is one of Mallarmé’s early poems, yet in many respects, as this analysis demonstrates, looks forward to the French poet’s mature phase and foreshadows the poetics of Wacław Rolicz-Lieder. Chief among the similarities are the autothematic focus and the intent to convey feelings of emptiness and longing for an ideal in poems refined to the point of préciosité. However, for all their preoccupation with the craft of poetry, either poet believed that inspiration was absolutely vital for creativity. This article argues that Mallarmé’s poetics, especially his ideas of inspiration and originality, was taken over by Wacław Rolicz-Lieder, who adapted it to suit his own poetic project.
This article is a critical reappraisal of Juliusz Słowacki’s translation of Calderón’s El príncipe constant (1843), which acquired a place of its own in Słowacki’s oeuvre and continued to attract a lot of interest throughout the 20th century. Its lasting appeal is due to its extraordinary unity of tone, dramatic construction and stylized language, which in effect, as some critics have said, out-Baroques Calderón’s Baroque original. This article analyzes this contention in detail and tries to answer the question what were the sources and reasons of Słowacki’s fascination with the 17-th century Spanish poet and playwright. The second part of the article deals with two of the 20th-century stage productions of the drama and the adapters’ handling of Słowacki’s text. The summary includes a brief survey of the treatment Calderón’s heirs accorded to his key trope perigrinatio vitae (‘life is pilgrimage’).