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Number of results: 18
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Abstract

A description of direct simulation of crosswind loads caused by critical vortex excitation and the response of the structure to these loads are presented in this paper. Tower-like structures of circular cross-sections are considered. A proposed mathematical model of vortex excitation has been numerically implemented and a selfserving computer program was created for the purpose. This software, cooperating with the FEM system, allows for a simulation of a crosswind load and lateral response in real time, meaning that at each time step of the calculations the load is generated using information regarding displacements seen beforehand. A detailed description of the mathematical model is neglected in this paper, which is focused on numerical simulations. WAWS and AR methods are used in simulations.

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Authors and Affiliations

T. Lipecki
A. Flaga
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Abstract

The problem of gender imbalance in Polish science is a clear and widely documented fact confirmed by numerous scientific studies. The gender imbalance affects both women and men depending on scientific disciplines and the level of scientific careers. The sources of this situation, leading to morally unacceptable exclusion of certain demographic groups and the underutilisation of society's full intellectual potential, are both 1) cultural and social aspects and the associated prejudice and discrimination, and 2) institutional aspects, including, inter alia, low and unequal salaries and the widespread use of anachronistic models of assessing scientific excellence that exclude non-traditional career paths and ways of conducting scientific research. In order to broaden the public dialogue on the gender imbalance in science in Poland, on 10.02.2023, the Polish Young Academy of the Polish Academy of Sciences (PAS), together with the National Science Centre, the Office of Science Promotion of the PolSCA PAS in Brussels and the Research Centre for Women's Participation in Public Space of the UAM in partnership with the L'Oreal Foundation, organised a conference entitled “Research excellence has no gender”. The event, attended by representatives and authorities of many organisations of the scientific community in Poland, inaugurated a long-term programme under the name “Research excellence has no gender”. The event aimed to draw attention to the existing disparities in science and the need to develop and introduce changes to reduce these disparities.
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Authors and Affiliations

Marta Gmurek
1 2
Anna Kłos
1 3
Jacek Ł. Kolanowski
1 4

  1. Akademia Młodych Uczonych PAN
  2. Politechnika Łódzka
  3. Wojskowa Akademia Techniczna
  4. Instytut Chemii Bioorganicznej PAN
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Abstract

Radiometric and geochemical studies were carried out at Red Hill in the southern part of King George Island (South Shetland Islands, northern Antarctic Peninsula) on the Bransfield Strait coast. The rock succession at Red Hill has been determined to represent the Baranowski Glacier Group that was previously assigned a Late Cretaceous age. Two formations were distinguished within this succession: the lower Llano Point Formation and the upper Zamek Formation. These formations have stratotypes defined further to the north on the western coast of Admiralty Bay. On Red Hill the Llano Point Formation consists of terrestrial lavas and pyroclastic breccia; the Zamek Formation consist predominantly of fine to coarse tuff, pyroclastic breccia, lavas, tuffaceous mud− , silt−, and sandstone, locally conglomeratic. The lower part of the Zamek Formation contains plant detritus (Nothofagus , dicotyledonous, thermophilous ferns) and numerous coal seams (vitrinitic composition) that confirm the abundance of vegetation on stratovolcanic slopes and surrounding lowlands at that time. Selected basic to intermediate igneous rocks from the succession have been analysed for the whole−rock K−Ar age determination. The obtained results indicate that the Red Hill succession was formed in two stages: (1) from about 51–50 Ma; and (2) 46–42 Ma, i.e. during the Early to Middle Eocene. This, in combination with other data obtained from other Baranowski Glacier Group exposures on western coast of Admiralty Bay, confirms the recently defined position of the volcano−clastic succession in the stratigraphic scheme of King George Island. The new stratigraphic position and lithofacies development of the Red Hill succession strongly suggest its correlation with other Eocene formations containing fossil plants and coal seams that commonly occur on King George Island.
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Authors and Affiliations

Anna Mozer
Zoltán Pécskay
Krzysztof P. Krajewski
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Abstract

This article is a presentation of the EtymArab© project, a start-up (“zero”) version of an etymological dictionary of Modern Standard Arabic. Taking the etymology of some generosity-related lexical items as examples, the study introduces the reader to the guiding ideas behind the project and the online dictionary’s basic features.
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Authors and Affiliations

Stephan Guth
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Abstract

This article is a presentation of the EtymArab© project, a start-up (“zero”) version of an etymological dictionary of Modern Standard Arabic. Taking the etymology of some generosity-related lexical items as examples, the study introduces the reader to the guiding ideas behind the project and the online dictionary’s basic features.

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Authors and Affiliations

Stephan Guth
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Abstract

This article is a presentation of the EtymArab© project, a start-up (“zero”) version of an etymological dictionary of Modern Standard Arabic. Taking the etymology of some generosity-related lexical items as examples, the study introduces the reader to the guiding ideas behind the project and the online dictionary’s basic features.

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Authors and Affiliations

Stephan Guth
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Abstract

Egyptian writer ʼIhsān ‛Abd al-Quddūs is one of the most prolific contemporary Arab writers and gained great popularity, especially in his country, but also all over the Arab world. The author deals with issues considered by society, including literature, taboos as the relationship between man and woman outside the context of marriage, the description of physical contacts, carnal and passionate love, prostitution, drugs, and the emancipation of women. In his stories he was interested in the feelings of the human being and in his relationship with the society. Al-Quddūs can be regarded as one of the most multifaceted intellectuals in the whole Arab world: in addition to being a writer and journalist of great popularity, he also occupied a prominent place in Egyptian cinema. ʼIhsān ‛Abd al-Quddūs was a provocative artist of great popularity in his time, but little known in the West, because of the scarceness of translated texts. Through the translation and analysis of his works it is possible to open up a wider glimpse into the knowledge of contemporary Arab literature.

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Authors and Affiliations

Emanuela De Blasio
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Abstract

Contemporary Arabic literature is slowly approaching a local production of the “fantasy” genre through attempts that can be considered an important starting point for this new genre still being defined in the Arab world. During the last decades the influence exerted by Western countries on the production of this literary genre, that reaches the Arab world around the twentieth century, has been evident mainly through the translations of Western fantasy novels. Among the various genres of fantasy novels which still enjoy international fame and have been translated into Arabic we find: The Lord of the Rings (1954–55) by John Ronald Reuel Tolkien; A Song of Ice and Fire (1996–2005) by Raymond Richard Martin and Harry Potter (1997–2007) by Joanne Kathleen Rowling. The delay in the introduction of the fantasy genre in the Arab countries has begun to be overcome in recent years, in fact many Arab authors have tried to write new fantasy novels. The fantastic tradition of Arab Islamic civilization is also an important part of drawing on the creation of original fantasy works. The study shows a general propensity of the contemporary Arab world to create a local fantasy, in which the Arab authors try to put the accent on the characteristic elements of Middle Eastern culture, though also drawing on the Western fantasy tradition.

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Authors and Affiliations

Emanuela De Blasio
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Abstract

The great 13th century scholar Yāqūt al-Hamawī, compiled his well-known geographical dictionary – Mucğam al-Buldān – using an incredibly vast corpus of sources that allowed him to describe the lands lying beyond the realm of Islam. The aim of this paper is to identify the sources he used to describe issues dealing with the Slavs or those peoples and areas thought by Arab writers to belong to or be connected with the Slavs. The results shed some light on the state of knowledge of this area among 13th century inhabitants of the caliphate. At the same time, the author’s analysis of the methods employed to compose the material on the Slavs that appears in the Dictionary helped determine the aim and the role of this work in the caliphate.

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Authors and Affiliations

Barbara Ostafin
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Abstract

The mineralogy and chemistry of Upper Cretaceous-Lower Paleocene claystone sediments from Mardin and Batman, southeastern Turkey, were analyzed. The main mineral paragenesis in the Upper Cretaceous member formed chlorite-smectite (C-S) and illite, while the Lower Paleocene member occurred of chlorite-vermiculite (C-V) and vermiculite minerals. The clays were silica-poor but indicated high values of Al, Fe, Mg, Cr, Ni, V, and Zr. Lower contents of the alkali elements (Na, Ca, Mg, K) of the clayey sediments suggests a relatively denser weathering of the source area. The mineralogical compositions, major element ratios, trace, and rare earth element (REE ) contents of the sediments show that the Upper Cretaceous member consists of materials with a mainly felsic source lithology, while relatively contributions from basic sources are found in the Lower Paleocene unit. A comparison of the major and trace element contents of the phyllosilicate/clay minerals with the members revealed that the patterns of the clays were different from each other, although the enrichments/ decreases varied depending on the origin (basement rocks or detrital) of the derived rocks, minerals, and elements. REE content of clays increased from detrital to phyllosilicate/clay minerals of chemical/diagenetic/neoformation origin during the Lower Paleocene. During the Cretaceous and Tertiary periods, local or regional geodynamic and diagenetic events largely governed the rock sedimentation processes and provenance variations amongst Germav Formation members.
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Authors and Affiliations

Sema Tetiker
1
ORCID: ORCID

  1. Batman University, Turkey
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Abstract

The aim of the article is an attempt to reconstruct a description of the image of Arab World on the basis of selected (yet representative) writings from the second half of the 18th century. In that period, due to the trending Enlightenment orientalism understood as a fascination with the Orient and references made to it in the culture, the Arab world appeared among Polish representatives of the Age of Reason. These trends were expressed in art, customs, literature and – in the form of various concepts and images – in social consciousness. These images differed between each other both in terms of content and form. Some of them aimed to depict the Arab world objectively and extensively, whereas the other, on the contrary, were merely delineations focused on particular elements of the Arab world, depicting only one or a few aspects. Some of them, such as the image of Arabia Felix or utopian reminiscences refer to the tradition and update it. Some of them were created for the time being. Nevertheless, each of them reflects the topics, problems and questions which concerned the minds in Enlightenment Poland. Moreover, relatively high correlation between European archetypes and the image of the Arab world which occurs in the writings of the Polish Enlightenment confirms that Poland belongs to the Old Continent cultural group, which was crucial for the promoters of Polish Enlightenment.

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Authors and Affiliations

Anna Kupiszewska
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Abstract

This article traces the concept of Place in the poetry of exiled Palestinian poet and literary critic Yūsuf Šihāda,1 now a Polish citizen. The article analyzes Place as the objective correlative through which one can discern the ensemble of the intricate existential relationships in the poetry of this exiled Palestinian intellectual who is torn between its complexities. The Slavic Place and place in general in his poetry constitute the backdrop to understanding the hidden meanings, the existential dilemmas, the entangled human relationships between East and West, and the moral stance the poet reflects in his work. Šihāda’s poetry is based on the poles of open-closed and inside-outside. It reflects loss, wandering, and emotional, intellectual, psychological, humanitarian, and existential alienation. Analysis of the types of place in his poetry – the polar, the intimate, the border, and the utopian - indicates that the poet’s voice has become the voice of the minority, and through the dialectics within the different types of places, he portrays his own crises and those of his people, the various restrictions placed upon them, their dreams of a free, unfettered life, and their yearning to live in an intimate place where they can unite with the universe.

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Authors and Affiliations

Basilius Bawardi
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Abstract

The article describes the finds of six Roman coins and a mysterious object with an Arabic legend discovered in the years 2000–2014 at the bottom of Lake Turawskie, created in 1939. With the creation of the reservoir many archaeological sites (of varied chronology, from the Roman period to the late Middle Ages) were flooded, many of which could not be properly investigated due to the time pressure. The Roman coins presented here are a standard part in the overall image of coins discovered in Silesia. The mysterious object with an Arabic legend is unique, it has partial analogies in Norman weights or early-Arab coins (al-wafā lillāh coinage).
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Authors and Affiliations

Dragan Milutinović
ORCID: ORCID
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Abstract

Studies of isotopic ages were conducted for rock samples of the Keller, Visca Anchorage and Domeyko Glacier formations. Together they form a part of the Martel Inlet Group, a terrestrial calc-alkaline volcanic and volcanoclastic suite and they crop out along the Keller Peninsula on King George Island. The U-Pb and 40Ar-39Ar isotope data from the Keller Peninsula lava flows, although differing in quality, made it possible to obtain reliable age intervals. The stratified volcanogenic rocks of Keller Peninsula, Visca Anchorage and Domeyko Glacier formations of the Keller Peninsula were emplaced there near the Early/Late Palaeocene boundary (ca. 62.11 ± 0.66 Ma ago), in the Early Eocene (ca. 56.3–51.9 Ma) and near the Early/Middle Eocene boundary (ca. 49.9–47.9 Ma), respectively. A certain difference in the ages of Eocene volcanogenic formations, in particular tectonic blocks of King George Island, may indicate a migration of centres of volcanic activity over time, from northwest to southeast.
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Authors and Affiliations

Jerzy Nawrocki
1
Magdalena Pańczyk
1
Agata Kozłowska-Roman
1

  1. Polish Geological Institute – NRI, Rakowiecka 4, 00-975 Warszawa, Poland
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Abstract

Artificial Intelligence, both as a hope of making a substantial progress, and a fear of the unknown and unimaginable, has its roots in human dreams. These dreams were materialized by means of rational intellectual efforts. We see beginnings of such a process in Lullus’s fancies. Many scholars and enthusiasts participated in the development of Lullus’s art, ars combinatoria. Amongst them, Athanasius Kircher was distinguished. Gottfried Leibniz ended the period in which the idea of artificial intelligence had been shaped, and started a new one when artificial intelligence could be considered a part of science, according to today’s standards.

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Authors and Affiliations

Kazimierz Trzęsicki
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Abstract

Traditional sports and esports benefit from the development of Information and Communications Technologies (ICT), including gaming, 4D image/video processing, augmented reality (AR), virtual reality (VR), machine learning (ML), artificial intelligence (AI), big data, high-performance computing (HPC), and cloud computing. On the fuzzy border between the areas of physical and modified reality, both types of sports can coexist. The hardware layer of esports includes PC, consoles, smartphones, and peripherals used to interface with computers, including sensors and feedback devices. The IT layer of esports includes algorithms required in the development of games, online platforms, and virtual reality. The esports community includes amateur and professional players, spectators, esports organizers, sponsors, and other stakeholders. Esports and gaming research spans throughout law (intellectual rights, insurance, safety, and age restrictions), administration (teams, clubs, organizations, league regulations, and tournaments) biology (medicine, psychology, addiction, training and education) Olympic and non- Olympic disciplines, ethical issues, game producers, finance, gambling, data acquisition and analysis. Our article aims to presents selected research issues of esports in the ICT virtualization layer.
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Authors and Affiliations

Andrzej Białecki
1
Jan Gajewski
2
Ryszard Romaniuk
1

  1. Warsaw University of Technology
  2. Józef Piłsudski University of Physical Education
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Abstract

The Elastic Optical Networks (EON) provide a solution to the massive demand for connections and extremely high data traffic with the Routing Modulation and Spectrum Assignment (RMSA) as a challenge. In previous RMSA research, there was a high blocking probability because the route to be passed by the K-SP method with a deep neural network approach used the First Fit policy, and the modulation problem was solved with Modulation Format Identification (MFI) or BPSK using Deep Reinforcement Learning. The issue might be apparent in spectrum assignment because of the influence of Advanced Reservation (AR) and Resource Periodic Arrangement (RPA), which is a decision block on a connection request path with both idle and active data traffic. The study’s limitation begins with determining the modulation of m = 1 and m = 4, followed by the placement of frequencies, namely 13 with a combination of standard block frequencies 41224–24412, so that the simulation results are less than 0.0199, due to the combination of block frequency slices with spectrum allocation rule techniques.
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Authors and Affiliations

R.J. Silaban
1
M. Alaydrus
1
U. Umaisaroh
1

  1. Department of Electrical Engineering, Universitas Mercu Buana, Jakarta, Indonesia
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Abstract

In this article, a hybrid circularly polarized Multiple- Input Multiple-Output (MIMO) antenna for multi-band operation from 2.3 to 9.2 GHz with an impedance bandwidth of 7 GHz is proposed and investigated experimentally. The designed MIMO antenna model has a compact size of 20mm×40mm×1.6mm on the FR-4 substrate. The microstrip feed of the proposed slot antenna consists of a tapered structure, and the radiating element consists of the inverted L- shaped slots, which were opened on both sides of the radiating elements to introduce notches at the sub-6 GHz frequencies. L-shaped stubs are also introduced on another side of the substrate in the common ground plane to attain high isolation between the radiating elements of the proposed antenna. In the operating band from 2.3 to 9.2 GHz, isolation of less than -20 dB is achieved by the proposed model. The performance of the circularly polarized MIMO antenna in terms of RHCP and LHCP radiation patterns, axial ratio, surface current distributions, isolation between the ports, diversity gain (DG), envelope correlation coefficient (ECC), total active reflection coefficient (TARC), and peak gain are studied and presented in this work. The obtained characteristics of the proposed antenna make it suitable for sub-6- GHz frequency applications.
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Authors and Affiliations

S. Salma
1
Habibulla Khan
1
B.T.P. Madhav
1
D. Ram Sandeep
1
M. Suman
1

  1. Dept. of ECE, Koneru Lakshmaiah Education Foundation, AP, India

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