Sadly, many great Hungarian engineers have been forgotten, engineers who could be outstanding role models for the young engineers of today. In some aspects Tódor Kármán belongs to these forgotten engineers. For that reason, we examine his life and work in our research. I distinctly refer to the educational system of the era, since his scientific work also originated from this. This essay also explores the most important work and inventions of the great scientist with regard to his space research activities that were way ahead of his time. In this context, I also mention Dr. Antal Bejczy, one of his followers in space research.
In 1875 a steel railway bridge was built in northern Warsaw. It had seven spans of 66.22 m and two spans of 15.24 m. In 1908 the second railway bridge was built downstream of the older one. The spacing of supports and spans were the same as in the older bridge. During World War I, both bridges were blown up and then rebuilt, first temporarily and then permanently. Again both were blown up in 1944. In 1945, a temporary crossing was built. In 1947 a permanent bridge was rebuilt, partially replacing rivets with welding. On the pillars of the older bridge, the Gdański Bridge was built (not in this study). In 1963 welded connections were strengthened, in 1980 the structure of the northern track was replaced. In 2016, the northern track was renovated. The replacement of the structure of the southern track is ongoing since 2018.
There are several technical inventors in Hungary who unfortunately have been forgotten or are not commemorated sufficiently. One of such Hungarian is Manfréd Weiss. In our research we examine his life and work, a life devoted to our technological development. Moreover, beyond his life, we also explore the famous inventor-engineer’s technical achievements and their impacts today. We also study the characteristics of the era in which he lived, in order to better understand the work and context of the inventor better.
I would like to emphasise that during our exploration, we realised the importance of this choice of topic: It is the duty of the later generations to explore and learn the work of their predecessors, and to spread and publish the conclusions as widely as possible.
Jørn Utzon, the Danish architect genius would be 100 years old in 2018, and he passed away exactly 10 years ago. Although, he produced an unparalleled professional output (including a number of implemented projects, many not built plans and some writings) on five continents, he has remained relatively less known worldwide in general, and virtually unknown in Central and Eastern Europe in particular. The paper intends to salute his achievements with reviewing his life and professional carrier with some selected projects, including his ’brand’, his impact and some lessons for contemporary professional practice. It is largely based on my recent research that concludes in the publication of a monography, due in December 2018, in Hungary.
Present paper is about Ernő Foerk’s several architectural works which involved monument preservation. Questions about the theory and practice of monument preservation are surveyed, focusing on restoration and reconstruction in Hungary in the marked period.
Ernő Foerk (1868-1934) born 150 years ago has significant oeuvre in the field of monument preservation and architectural education. As professor, one of his achievements was the organisation of summer survey camps named as ‘szünidei felvételek’ (vacation records) which was also accessible in published form. In the year of 1917 under his supervision, his students have surveyed all the scored Ottoman monuments of Hungary. In the following year these survey drawings were published with a brief summary of the history of Ottoman architecture in the territory of Hungary. Our paper is to submit the general circumstances of the Ottoman survey program supervised by Ernő Foerk with its historical background and the analysis of the methodology of the survey by the example of the türbe of Pécs.
Tüköry Mansion in Dioš (Diósszentpál), Croatia, was designed by architects Ernő Foerk and Gyula Sándy in 1904. It is situated near the Central Slavonian town of Končanica and in close proximity of Daruvar, on an estate that belonged to Tüköry family. The late-historicist country house was commissioned by Paula von Falkenberg, a widow of Alajos Tüköry de Algyest, as a permanent residence for her and her three children. It was built in the eclectic late-historicist style of fin-de-siècle Hungary, highly inspired by the late-mediaeval art and architecture of northern Italy. Those stylistic influences were strongly manifested in the architectural design of the mansion, but even more its great hall, the focal point of its layout, designed in 1904–05. Based on both archival and terrain research, this paper aims to determine the main factors of cultural and architectural identity of the mansion by elucidating its history and stylistic genealogy.
In this paper, controlling and optimizing against the earthquake by using genetic algorithm is investigated. In this paper, a new approach for selecting optimal accelerograph and scaling them for dynamic time history analysis is presented by the binary genetic algorithm and natural numbers, in order to achieve the mean response spectrum, which has a proper matching and a short distance with the target spectrum and indicates the expected earthquake of the site. Because of the difference in the nature of accelerograph and the scale coefficients, the genetic algorithm presented in this paper, is hybrid (has two chromosomes). The proposed algorithm is capable of constructing a new generation of people from a series of infinitesimal earth movement records, in a process where natural selection, mating, mutation takes place, and creates a new generation of people and continues this process until a person with desirable qualities is obtained. One of the most important factors in the accuracy and efficiency of these programs is the correct estimation of their parameters. If these parameters are correctly calculated, the difference between the mean response spectrum and the spectrum of the plot will be greatly reduced. Due to the relatively large number of these parameters, the use of trial and error-based methods largely relies on user skills, the proposed hybrid genetic algorithm program can overcome this defect. The program has two genomes that run simultaneously and provide close answers to the optimal answer. The program itself is able to provide the user with a range of optimal coefficients and crossing values and mutations of each chromosome.