bluuebunny/crossref_metadata_2025 huggingface dataset:
Immigration VS Emigration: The Compensatory Role of Migration in the Demographic Development of Russian Regions
Authors: Khramova Marina , Skoblina Elena , Zorin Dmitry
Published: December 2022

For the Russian Federation, international migration plays an important role in shaping the population of many regions. Migration gain partially compensates for the natural decline caused by depopulation. However, in 2020–2021 only a small number of subjects of the Russian Federation were able to make up for the demographic losses due to migration, both domestic and international. This can be partly explained by the impact of COVID restrictions, as a result of which international migration decreased significantly in 2020. Another reason may be related to the reorientation of migration flows from Russia’s traditional donor countries to other destinations. In the conditions of depopulation, it is worth paying attention to another process – the emigration of Russian citizens abroad. The goal of this work is to study the impact of international migration in the regions of the Russian Federation on the size and demographic structure of the country’s population in 2020–2021. In the paper, we analyze the dynamics of mortality and natural decline in the population of the Russian Federation during the COVID-19 pandemic and assess the impact of the pandemic on educational and labor migration to Russia. Some of the consequences of emigration to the main recipient countries are also being discussed. It is shown that the Coronavirus pandemic has had a multidimensional and prolonged impact on the demographic development of Russian regions. In the context of restricted mobility, the scale of international migration in 2020 has significantly decreased. The increase in migration made it possible only partially to compensate for natural population losses. The significant scale of emigration also causes concern. Comparison of the structure of immigration and emigration flows allows us to conclude that, as a result of emigration, there is an outflow of human capital from a number of strategically important regions of the country.
On the demand for professions in the regional labour market: the example of the Republic of Tyva
Authors: Orekhova Inessa
Published: December 2022

The presented article is based on the materials of sociological studies conducted in the Republic of Tyva in 2019 and 2021. The article analyses the situation in the professional segment of the labour market of the specified region of the Russian Federation, in particular, the problem of professional demand and lack of demand. The imbalance of demand and supply in the labour market is considered from the point of view of interaction between professional educational institutions and employers in the field of educational programmes. The author believes that the Russian system of vocational education as a whole is inert and clumsy, therefore it is easier to solve the problem of interaction between the education system and employers in a particular region. As an example, the joint work of the Ministries of Education and Labour of the Republic of Tyva is given. They joined forces with the objective to gradually change the system of training specialists of various levels and profiles, for which several projects had been launched. However, here, too, the inconsistency of the actions of the project developers doomed this useful and necessary undertaking to failure. It is the inconsistency of the actions of various departments, according to the author, that does not allow a timely response to economic changes, including the transformation of the professional segment of the labour market. The unresolved problem leads to inefficient and irrational use of accumulated human capital and to many problems in the socio-economic sphere, in particular, to a high level of unemployment and poverty of a significant proportion of the population. The author further examines the changes in professional demand in the region against the background of the difficult economic situation in the country.

In the professional segment of the labour market in Russia, there is currently a huge demand for IT specialists. Experts believe that this is mainly due to the outflow of these professionals from the country. As a result, the author comes to the conclusion that at present, in the professional segment of the labour market and employment in Tyva, there is a rather unfavourable situation for both workers and employers. The former cannot find a job in accordance with their specialty, the latter cannot fully satisfy their staffing needs.
Analisis Fisis Briket Berbahan Baku Sludge Biogas dengan Perekat Daun Randu (Ceiba Pentandra)
Authors: Faizin Nur , Anugrah Hegy Eka , Ulma Zeni
Published: December 2022

Limbah sludge biogas dari kotoran sapi berpotensi untuk dibuat briket. Kotoran sapi dapat digunakan sebagai bahan baku briket karena memiliki kandungan kimiawi cukup baik. Kandungan kimiawi kotoran sapi antara lain 22,59% selulosa, 18,32% hemiselulosa, 10,20% lignin, 34,72% total karbon organik, serta 1,26% total nitrogen. Penelitian ini bertujuan untuk mengetahui komposisi terbaik dan karakteristik briket perekat daun randu terhadap kualitas briket sludge biogas. Data pada penelitian ini diperoleh dari 6 pengujian yaitu uji kadar air, kadar abu, densitas, densitas kamba, laju pembakaran, dan nilai kalor. Variasi sampel yang digunakan adalah rasio antara bahan baku dengan bahan perekat. Rasio sampel yang digunakan pada penelitian ini yaitu (75% : 25%), (70% : 30%), dan (65% : 35%). Metode pengarangan yang digunakan yang digunakan adalah pirolisis, proses ini berlangsung selama 2-3 jam menggunakan suhu 200-300°C. Hasil terbaik diperoleh untuk variasi V1 yaitu kadar air 6,7638% (SNI<8), kadar abu 1,0199% (SNI<8), densitas 1,1627 gr/cm3(SNI>0,44), densitas kamba 0,3563 gr/cm3, serta laju pembakaran 0,0887 gr/s. Sedangkan nilai kalor yang diperoleh sebesar 2667 kal/gr. Nilai kalor ini masih belum memenuhi standar SNI yaitu >5 Kkal/gr sehingga membutuhkan penelitian lebih lanjut.
Tinjauan Terhadap Perencanaan Phytomining sebagai Alternatif Tambang Emas Ramah Lingkungan
Authors: Kusuma Di Ajeng Arum , Haeruddin Haeruddin
Published: December 2022

The community's negative paradigm regarding mining activities is still circulating today. They assume that mining only brings harm to the surrounding environment. The community is worried that the mining activities carried out can damage the environment and make them lose their livelihood as farmers. Gold mining can not only be done by conventional methods, but also by the Phytomining method. Phytomining is the production of metal plants by growing plants that can accumulate metals in high concentrations. Phytomining is an environmentally friendly method because in the process it does not use chemical substances that can harm the environment and the surrounding community. In this study, mining planning is carried out which includes prospecting activities, exploration, feasibility studies (feasibility studies) equipped with Environmental Impact Analysis (AMDAL), mining preparation and construction of mining infrastructure, Occupational Health and Safety (K3), management and environmental monitoring. The Phytomining method used can be an alternative solution for environmentally friendly mining activities. In addition, the community will not lose their jobs and earn more because of mining activities. Mining with the Phytomining method has been widely applied in other countries, for that this method also has the potential to be developed in Indonesia.
Analisis Perbandingan Metode Kuz-Ram dan Digital Image Analysis pada Tanah Penutup Tambang Batubara PT. XYZ, Kalimantan Timur
Authors: Suparno Fanteri Aji Dharma , Haeruddin Haeruddin , Aminah Siti , Andalas Difan Tri
Published: December 2022

PT. XYZ adalah perusahaan tambang batubara yang beroperasi di Kalimantan Timur. Metode penambangan yang digunakan adalah open pit dengan kegiatan pemberaian utama tanah penutup adalah peledakan. Fragmentasi menjadi faktor penting dalam peledakan dimana untuk perusahaan ini ukuran fragmentasi tidak melebihi 80 cm atau ≤ 15% berdasarkan pada ukuran bucket alat gali. Metode yang digunakan dalam menganalisis fragmentasi hasil peledakan yaitu Digital Image Analysis secara aktual di lapangan menggunakan perangkat lunak Split- Dekstop, dan secara teoritis menggunakan metode Kuz-Ram. Hal ini dimaksudkan untuk mengetahui dan membandingkan persentase distribusi ukuran fragmentasi hasil peledakan. Hasil dari analisis fragmentasi peledakan PT. XYZ di lapangan, dilakukan pada dua lokasi pengambilan data yaitu loading point A1 dan A2. Geometri peledakan ada A1 adalah burden 5,04 m, spasi 6,03 m, menghasilkan fragmentasi ukuran ≥ 80 cm sebesar 8,15% dan A2 adalah burden 5,2 m, spasi 5,7 m, menghasilkan fragmentasi 5,61% ini berdasarkan metode Digital Image Analysis dengan Split-Dekstop. Sedangkan dengan metode prediksi Kuz-Ram justru sebaliknya menghasilkan ukuran fragmentasi dengan persentase yang besar yaitu pada quarry B7 sebesar 24,17% dan B8 sebesar 22,99%, pada fragmentasi berukuran ≥ 80 cm.
Nákaza a jej sémantické polohy v románe „Atómy Boha“
Authors: Antošová Marcela
Published: December 2022

The article focuses on the novel Atoms of God by Gejza Vámoš. The study looks at the work through the motif of infection, which has three dimensions in the novel: organic life as an infection, egocentrism as infection and infection as a health disorder. As a result, the first two levels represent the phenomenon of infection in the figurative sense of the word, and only the last level of the motif captures it in its primary meaning. However, all three levels of the infection overlap, correspond and complement each other. Their background (starting point) is the philosophical worldview, which the writer in the Atoms of God (identically to his academic dissertation on the philosophy of the Principle of Cruelty) himself declares. Vámoš, inspired by biological determinism, defines life as an infection by an egocentric struggle of an individual about himself and for himself. Moreover, in the end, it is egocentrism that weakens the individual even in the fight against the disease.
Zobrazování nákazy v českých uměleckých textech s tematikou války v prvních dekádách dvacátého a jednadvacátého století
Authors: Halamová Martina
Published: December 2022

The paper is focused on the comparison of discourses formed in the literary texts which depict motifs of war at the beginning of 20th and 21st centuries. Images associated both with First and Second World War emphasize the shock of the changing world and lend literary credence to the texts. However, this goal is achieved by different means in the early 20th and the early 21st centuries. In expressionist novels and short stories metaphors of infection are used to describe the decline and the fall of the world of the early 20th century. Compared to that, the literary texts created in the early 21st century do not use metaphors because the experience of the Holocaust presented in the texts is viewed as a non-assimilable event and therefore it should not be translated into metaphors. In addition to the suffering of the Holocaust, the image of the infection in the literary texts of the beginning of the 21st century is only an accompanying description of the events of the Second World War.
Zaraza i rat kao anticipatori smrti: „Tifusari” Jure Kaštelana
Authors: Kos-Lajtman Andrijana
Published: December 2022

The paper examines Jure Kaštelan’s poem The Typhus Victims, an emblematic text of modern Croatian literature, from the perspective of his relation to the thematic context of contagion (typhus) and war (World War II), the key semantic pillars leading to death as an inevitable result. The Typhus Victims is an example of the synthesis of diverse literary modes on numerous discursive levels — starting with semantic polyvalence, where they participate within the framework of several semantic fields (disease as an augury of death, the cataclysm of war, freedom as an ideal), through a global structure (six heterogenous parts), to stylistic heterogeneity. The various linguistic and stylistic components synergistically contribute to the identifying death as the key theme of The Typhus Victims, as well as love and freedom on its thematic antipodes. The paper aims to study the functional relationship of formal elements of poetic utterances with the aforementioned thematic structures, with special emphasis on the procedures of anticipating death on the semantic axis of the cataclysm of war, in which violence and contagion are the key generators.
Postjugosłowiański teatr wobec pandemii COVID-19. Poetyka, strategie kreacji i nowe uczestnictwo
Authors: Abrasowicz Gabriela
Published: December 2022

The COVID-19 pandemic caused the necessity to change the process of theatre production and facilitated the development of certain solutions enabling the presentation of its effects, such as the use of new technologies and a revamp of the “intimate show” strategy. That led to the discovery of model of theatre so far unknown on such a scale and generated a different mode of reception. It turned out that restriction became a great inspiration for many theatre artists, as evidenced by artistic projects (staged texts, installations, cruising performances, performative walks) from Croatia, Slovenia, Serbia and Montenegro. The selected examples confirm that in a certain regional dispersion in 2020 and 2021 similar contents have emerged and comparable concepts have come to fruition. The material includes an overview of dramatic plays and their transfer to the stage (also virtual or in “non-theatrical” spaces), and thus a description of decisions concerning the choice of subject matter, poetics and production strategy.
Povampirenje kao zaraza – prvi vojni izveštaji o vampirima i njihovo literarno transponovanje u savremenoj srpskoj prozi
Authors: Perić Dragoljub
Published: December 2022

This paper analyses three works of fiction (two novels and one short story) inspired by the first Austrian military reports on vampires. These reports suggest how the discourse about the Other (primitive, barbaric, half-cultivated, etc.), personified in the Serbs, evolved in the Age of Enlightenment. Additionally, the reports have been a source of creative inspiration for a number of literary (re)interpretations of the vampire phenomenon: from postmodern literary entities (mediating an open dialog of the novel, written by M. Novaković, with the entire tradition of the Serbian horror fantasy), through existential studies of the meaning of humanity in the context of the “demonic gift” (the novel by M. Milosavljević), and biological metaphors of disease, to the latest representation of this demonic character as a dark subculture hero existing in the liminal areas of “civilized” space (G. Skrobonja).
Пандемички дискурс у поезији Драгана Хамовића: „Заштитна маска” и „Две хиљаде двaдесета”
Authors: Arsenijević Mitrić Jelena N.
Published: December 2022

The paper discusses elements of pandemic discourse in the poetry of Dragan Hamović within two collections of his poems: Protective Mask (2020) and Two Thousand Twenty (2021). At the centre of this poetry lies the general questioning and concern over the new and (im)possible living conditions to which we as a society are exposed to due to the pandemic of COVID-19. Through a kind of lyrical diary of a bad year, the poet lucidly sees himself and others in the context of the so-called new normality (isolation, quarantine, curfew, state of emergency, masks, vaccines, tests and so on) and the year 2020, as a year of double annihilation (“two zeros”). The focus of the research will be therefore directed towards rethinking and critique of the current socio-historical moment as a moment of crisis at the global level caused by the coronavirus epidemic.
W obliczu choroby — tyfus w opowiadaniach Antoniego Czechowa
Authors: Nowakowska-Ozdoba Joanna
Published: December 2022

The article describes the experiences of Chekhov’s characters with typhus and their feelings towards it. Its main goal is to present how the disease determines the patient’s experiences and changes his attitude to the world around him. The analysis centres around three short stories: Typhus, The Bishop and Rothschild’s Violin. In the first two works, the narrator draws attention to the physical experiences of the suffering protagonists. The sensory experience, which determines the emotions and mindset of patients, is brought to the fore. Apart from lust, the writer represents their state of consciousness. In Rothschild’s Violin and The Bishop, illness prompts the heroes to reflect on the life they have lived and to evaluate it. In all the texts analyzed, Chekhov’s interest lies in the physical symptoms of the disease and the state of the patient’s psyche, the differences between the healthy and suffering person’s perception of the world, the idea of life at a turning point and the attitude displayed by diseased people towards death.
Мотив болезни в романе Бориса Пастернака „Доктор Живаго”
Authors: Boginskaya Anna
Published: December 2022

The motif of illness and recovery lies at the core of the worldview of the protagonist of Boris Pasternak’s novel Doctor Zhivago. The novel refers to the motif of illness firstly because of the protagonist’s trade and the realities of the post-revolutionary and civil war years, which were accompanied (or followed) by typhus epidemics. Secondly, the motif of illness is inextricably linked with the time of major historic transitions, and as such with the prevalent feeling of violation of physical and psychological harmony of the universe. The article distinguishes and analyses a number of themes and motifs which are interwoven with the motif of illness, such as creativity, the release of unconscious impulses, liminal states, dreamstates, and the figure of the window. All these themes and motifs were outlined in Pasternak’s poems and later found their continuation and development in the novel Doctor Zhivago.
Чудесне і реальне оздоровлення в час епідемії (Салоніцький 1724 рік Пилипа Орлика)
Authors: Sobol Walentyna
Published: December 2022

The year 2022 marks the 350th anniversary of the birth of the leader of the first Ukrainian emigration in Europe, hetman Pylyp Orlyk (1672–1742). The main goal of this article is to present an analysis of a certain manuscript which was first read out loud and prepared for publication in 1724. It contains a fragment of a diary that Orlyk wrote during 1720–1732. The year 1724 was one of the hardest in his travels through the Turkish-occupied province of Thessaloniki, where an epidemic (or, as Orlyk put it, “infection,” “evil air” or the “plague”) that lasted for several years broke out. Orlyk’s diary of subsequent years, including 1730, is filled with dramatic imagery of the disease. The article uses the methodology of the history of private life. The author explores the motifs of both miraculous and real recovery. In the conditions of isolation, enforced loneliness, the separation from his wife, Anna Gertsik, and their eight children, Orlyk finds salvation in his faith in God, but also in reading, translating, learning foreign languages, and communicating with a few friends. The author comes to the conclusion that Orlyk resembles Montaigne in his understanding of loneliness. What he seeks is not isolation from people, but inner freedom, and he strives to reunite with his family.
Schools as Positive Institutions in the Context of Language Learning: Students’ Perspectives
Authors: Michońska-Stadnik Anna
Published: December 2022

Positive psychology focuses its research on the conditions of people’s well-being and happiness, contrary to mainstream psychological studies on human disorders. The three most important areas to focus on while studying reasons for people’s effective lives are positive emotions, positive features of character and positive institutions. Positive attitudes seem to be especially essential in education, because that is where the features of character are formed. In second language acquisition studies, these three areas appear to be exceptionally important because of the essentially social character of the language learning process. This paper focuses on students’ opinions about the role of school in their language development. These comments were collected in retrospective semi-structured interviews. Students offered both positive and negative opinions on schools and their role in language education. It appears that even though some schools care for students’ well-being, quite a few of them still cannot be considered as positive institutions.
Jews and Other Nations in Selected Translated Versions of the Bible
Authors: Krzeszowski Tomasz Paweł
Published: December 2022

The English noun ‘Jew’ is the lexical equivalent of the Hebrew word yehudi (in plural yehudim), which is used in opposition to goyim as members of all other nations. These two nouns are rendered in various languages in a considerable number of different ways. The article focuses on their translational equivalents in Greek, Latin and in numerous selected Polish and English versions of the Bible. The confrontation of these equivalents yields what I elsewhere call “the Bible translation imbroglio”. Yet, this chaos has no adverse impact on faithful Jews and Christians for whom the Bible is a sacred text. This is so because for every faithful reader, every contact with the Bible in whatever version, at least in principle, constitutes a fresh unique religious experience, and the number of such unique experiences certainly exceeds the number of all existing versions of the Bible. Every individual experience of this kind is tantamount to creating a new target version of the Bible, even if the particular source text remains unaltered. Pious readers believe that the Bible is the way by means of which God sends His Word carrying His Message to people, and that this Word remains unchanged, even if words in different languages carrying this message may be different, unstable and inaccurate.
How Communication Happens—Where Physical Properties and Meaning Meet in the Brain: Evidence from Semantic, Prosodic and Face Processing Studies
Authors: Niznikiewicz Margaret
Published: December 2022

Communication in social groups, especially in human societies, is predicated on efficient decoding of physical properties of auditory and visual signals into messages. In this brief overview, I will discuss processes that lead to our experience of receiving a message focusing on semantic, prosodic and face processing operations. In spite of the fact that we experience such messaging as nearly instantaneous, it involves complex interactions between multiple brain regions that support processes involved in communication. In the course of such interactions neural operations analyze a physical signal, extract its features into abstract representations and assign meaning to them. Furthermore, abnormalities in these processes, brought about by either structural or functional deficits, result in profound cognitive difficulties that often manifest as clinical symptomatology. This chapter discusses in some detail which brain networks make social communication possible, as well as the consequences of their abnormalities.
(Applied) Psycholinguistics for Foreign Language Teachers: A Diachronic Perspective
Authors: Gabryś-Barker Danuta
Published: December 2022

In discussing any scholarly discipline in both its theoretical and empirical dimensions, there is value in taking a diachronic view to determine the starting point, the direction and to assess achievements leading to new developments. The aim of this article is to outline the evolutionary character of psycholinguistics (and applied psycholinguistics), with emphasis on those areas of psycholinguistic research which are relevant for language practitioners: teachers, learners and users of foreign languages. The choice of topics made is by no means exhaustive, as psycholinguistics over decades has been—and still is—is a vast multidisciplinary domain of study. Only selected topics are discussed here, and the selection is based on the personal assessment of the author as to their importance and the evolutionary and dynamic impact they have had on language education and practical FL classroom instruction across time. This overview offers a brief discussion of psycholinguistic research from the fifties of the previous century to the present day. In each of the areas outlined, implications relevant for foreign language teachers, learners and users are discussed to create an overall picture of the developing contribution of (applied) psycholinguistics to foreign language education.
Droga Herbaty. Część I
Authors: Dąbrowski Grzegorz
Published: December 2022

The aim of the article is to point out that the numerous cultural behaviours — usually those of secular nature — which in Japanese culture fall into the category of chadō (its sense seems to be best conveyed precisely by the notion of the “Way of Tea”) are largely a manifestation of putting the Buddhist philosophy into practice. In this tale of Buddhism through a symbol, that is tea, an important element is also the notion of “Zen,” which should be linked to the form of Buddhism rooted in Japan and known as Zen Buddhism.

The strategy used to illustrate the problem in question is to introduce and discuss successive concepts, figures or cultural texts that are inextricably linked to Japanese tea culture and that clearly correspond to the many dimensions of Buddhist thought, which originated in India around the 6th century BC. One of the dimensions of this thought is the law of interdependent emergence, which, finding its expression in chadō, not only serves to celebrate culturally established behaviours, but sensitises those following the Way of Tea to their cognitive capacities, which — according to this law — never depend solely on the subject or the method used.

The article is divided into two parts. The first contains an introduction, information about the literature and discussion of categories associated with chadō and described by means of terms like “master,” “roji,” “emptiness” and “tokonoma.” In the second part, the categories discussed are those of “host and guest,” “four noble truths” and “suchness.” The second part of the article also includes a conclusion.
Sytuacja obywateli polskich w Jakuckiej Autonomicznej Socjalistycznej Republice Sowieckiej po 1941 roku
Authors: Zapalec Anna
Published: December 2022

During the Second World War various groups of Polish citizens, including a substantial number of Jews, were exiled and deported to Yakutia. They ended up in the region usually as prisoners sent to Soviet camps and special residential estates as a result of deportations carried out by the NKVD in the Eastern Borderlands of the Second Polish Republic in 1940–1941.

The legal status of Polish citizens in the USSR changed only after the Sikorski–Mayski agreement of 30 July 1941 and following the Soviet amnesty decree of August 1941. People released from confinement were allowed to go to other Soviet regions or to the Polish army being formed at the time in the USSR. Some took advantage of this opportunity, but several thousand Polish citizens decided to remain in Yakutia during the following years of the war. Their health and living conditions were poor owing to the harsh climate, insufficient supply of food and necessities, unfavourable housing conditions and other local factors. Most Poles and Jews remained in Yakutia until 1946 and returned to Poland only after the signing of the Polish-Soviet repatriation agreement.
Islamic Ethics as Moral Regulations in Library Writing Productivity
Authors: Suwarno Wiji
Published: December 2022

Writing is like speaking verbally in that it requires ethics in producing to delivering. Therefore, this article deliberately raises the theme of Islamic ethics in the context of writing. The purpose of this writing is that in carrying out their duties and responsibilities as information managers, librarians maintain ethics anywhere and in any context, including in writing activities. This study used a qualitative research type, with data collection using interviews, observation and documentation. Interviews were carried out by purposive sampling to librarians who were active in producing papers at PTKIN in Central Java which had been indexed on Google Scholar. The results of the study inform that Islamic ethics which play a role as moral regulation in this writing activity are the prophetic characteristics of the Prophet, namely sidiq which means honest, amanah which means trustworthy, fathonah which means wise, patient, and tabligh which means having good critical power and can deliver. Librarians as human resources in an organization occupy a strategic position in determining the success of an organization. The development of science and technology provides its own challenges for HR (Librarians) to always adapt to survive and develop to become one of the keys to achieving the goals of an organization. Islamic ethics like this are expected to be well internalized into the souls of librarians who incidentally will always be related to information and the world of librarianship.
Implementation of Vufind Application As Web Scale Discovery Services To Improve Easiness Access of Open E‐Resources: Case Study At University of Jember Library
Authors: Widiastuti Ida
Published: December 2022

The increase number and vast of information resources in library, both internal or external resources, encourage University of Jember library to use an aplication base on Web Scale Discovery Services (WSDS) for managing open access e‐Resources. This study provide an overview of implementation open source Vufind discovery tools in order to give new e‐resources search Services at University of Jember library, so user able to access various open access databases in one indexer portal. This research uses descriptive qualitative method, with a case study approach. Data was collected by observation, interview, and document tracing methods. In this study, interviews were conducted informally, so that researchers and informants were in a natural situation. Meanwhile, data testing was carried out using the triangulation method. As results, the technical problems in implementing Vufind are in harvesting and editing metadata, because there is a lot of differences of metadata form myriad databases. Other research result show that Implementation Vufind Web Scale Discovery Services at University of Jember Library is very useful in facilitating access to various databases open access e‐resources
Synthesis and analysis of the laws of automatic landing control of an unmanned aircraft on a landing gear
Authors: Chernenko Serhii , Burnashev Vitalyi
Published: December 2022

In this research we obtained the flight control laws for an unmanned aircraft at the landing stage, and performed an analysis of their performance under the action of a wind disturbance. The landing trajectory consists of sections of straight-line descent and exponential alignment. Stabilization on the trajectory is carried out according to a proportional law with constant coefficients obtained by the method of optimal regulators analytical design. The wind speed was taken into account as the sum of the average horizontal component, considering the vertical shear, the turbulent component and discrete vertical gusts. The maximum permissible wind speeds are determined taking into account the restrictions on the motion parameters at the touchdown point. Their value depends on the direction and corresponds to five points.

The article shows graphs of changes in motion parameters during landing under the action of a tailwind, headwind and vertical wind, as well as graphs of changes in the position of controls. We also indicated the statistical characteristics of the vertical speed of touching the landing site, as well as errors in the longitudinal coordinate of the touchdown point for the maximum allowable wind speeds.
Flight and multicopter algorithm in the absence of GPS signals
Authors: Sheremet Maxim
Published: December 2022

The problem of developing an algorithm for automatic return of the multicopter to the place of takeoff in the absence of GPS signals is considered.

         An algorithm for controlling the flight of a multicopter based on the information of a magnetometer, air velocity sensor, barometric altimeter, which allows to perform the task in the absence of external perturbations.

The efficiency and effectiveness of the algorithm are confirmed by the results of modeling using Mission Planner software and the results of experimental tests.
Complementary filter for determining the orientation of moving objects
Authors: Ryzhkov Lev , Zorin Serhii
Published: December 2022

The choice of the structure and parameters of the complementary filter for determining the orientation of moving objects in order to reduce its errors in the presence of gyroscope drift and significant linear accelerations is considered. For the analysis the complementary filter constructed according to the filtration scheme is accepted. First- and second-order filters are compared. For the second-order filter, two variants for constructing a filter are considered, depending on which disturbanceit is desirable to reduce in the first place.
Experimental investigation of the maximum quality factor axes temperature deviation in metallic Coriolis vibratory gyroscopes resonator
Authors: Petrenko Oleksii , Chikovani Valerii , Golovach Serhii , Golovach Grygorii
Published: December 2022

A metallic cylindrical resonator is a well-known base detail of the significant part of Coriolis vibratory gyroscopes (CVG) [1] including a MEMS gyro. It own parameters just after mechanical manufacture in main are determine an advisability of further utilize and the future gyroscope accuracy potential. Initial testing CVG resonators directly after their manufacture often done using the optical method [2,3] or acoustic method [4,5]. Unfortunately investigated manufacture quality of the resonators by using acoustic method not very well describe in scientific literature. A paper presents the results of some extension acoustic investigations of the metallic CVG resonators. This result describes the behavior of maximum quality factor (Q-factor) axes and own resonant frequencies axes under stabilized temperature step influences and can be used in prediction for CVG bias minimization during it works in temperature range.
Optimization of the geometry of the glider wing taking into account statistical data
Authors: Tysiachuk Oleh , Sukhov Vitalii , Predachenko Kostyantyn , Lukan Andriyi
Published: December 2022

The article presents a synthesis of an optimization algorithm for an aerodynamic characteristics of a sailplane in preliminary design phase aimed at increasing average cross-country speed. The flight data of SZD-48-3 standard class FAI glider was collected and analyzed from weglide.org portal as a flight track files, saved in igc format. The general structure of an atmosphere was analyzed during cross-country flight basing on collected statistics. New integral criterion for the target function has been presented for usage in optimization routine loop. The criterion permits a reduction of multicriterial optimization problem to united parameter.

Genetic Optimization algorithm has been selected as a main optimization tool due to its ability to find global optimum of an unsmooth multidimensional target function and robustness in general. The parametrization scheme with minimal number of parameters has been presented for a wing with a complex planform. The Lifting-Line Theory and XFOIL solver implemented as a mathematical model of an aerodynamic characteristics of the wing. As a result, prospective ways for consecutive development have been revealed. In particular, application of synthesized optimization algorithm towards any other classes of aerial vehicle and introduction of airfoil to wing parameterization.
Methods of mathematical medicine
Authors: Lyshchuk V.A. , Andrikov D.A. , Hazizova D.SH. , Drakina O.V. , Kalyn S.V. , Sazykina L.V. , Shevchenka H.V.
Published: December 2022

The decision of the main problem for development of mathematical medicine – definitions of criteria and restrictions for synthesis and therapy optimization is proposed. The methods described here connected to elaboration of the mathematical models, control of medical treatment, individualization and use of models, allocation of pathological processes. The separation of pathological and adaptive organism reactions (homeostatic, compensatory, protective) wasn’t realized early. Methods give the possibiliy to estimate numericaly efficiency and helpfully of medicinal therapy, and also the quality of treatment. On the basis of these methods the technologies provided physicians decision of doctor have been carrying out. This technologies were successfully applied in treatment of more than 4000 serious patients
Simulating turning cycles on CNC lathe machines
Authors: Petrakov Yuriy Volodymyrovych , Ezenduka John Maru
Published: December 2022

It is shown that the turning of the contour shaped surfaces of parts is mainly carried out according to the cycles of rough turning G71, G72, G73 with a finishing pass according to the cycle G70. In any case, the cutting process is quasi-stationary, which determines the need to control the cutting mode to stabilize and optimize the process. It is proposed to use a special program for designing the control program of a CNC machine tool, which, based on a priori information about the technological machining system, performs the simulation of the process. During simulation, in the process of solving the optimization problem according to the criterion of maximum Material Removal Rate, all components of the cutting mode are automatically determined: depth, feed and spindle speed. The results are presented in the form of control files, according to which a control program in G-codes can be compiled to optimize the process. In addition, it is additionally possible to obtain a prediction about the actually machined contour, taking into account the elastic deformation during the cutting process, and data on the correction of the trajectory of the shaping movement in the last pass.
Analysis of the strength of the frame of a two-section hopper car with a closed center beam design
Authors: Fomin Oleksiy , Lovska Alyona
Published: December 2022

Background. Ensuring the profitability of rail transportation and maintaining their leadership positions necessitates the commissioning of promising rolling stock designs. Such rolling stock should not only have improved technical and economic indicators, but also ensure the minimization of empty runs. Therefore, the creation of promising designs of rolling stock, designed for the simultaneous transportation of different types of cargo, is a very topical issue.

Objective. Illumination of the results of determining the strength of the frame of a two-section hopper car with a closed center beam design under the main operating modes of loading.

Methods. In order to reduce the material consumption of the frame of the hopper car, the optimization method for safety reserves was used. For this purpose, the strength of a typical frame of a hopper car was calculated using the finite element method implemented in the SolidWorks Simulation software package. To reduce the material consumption of the hopper car frame, it is proposed to use a rectangular profile for the center sill.

Results. The use of a rectangular profile for the center beam of the hopper car frame is substantiated. At the same time, it becomes possible to reduce its weight by 2.3% compared to the standard version. The results of calculations for the strength of the hopper car frame showed that the maximum equivalent stresses in it are 341.5 MPa and do not exceed the permissible values.

Conclusions. The conducted research will contribute to the creation of developments in the design of advanced rolling stock structures, as well as to increase the efficiency of railway transport operation.
Using the functional approach in the development of hybrid processes in engineering: theoretical base
Authors: Salenko Oleksandr , Klymenko Sergiy , Orel Vadum , Kholodny Volodymyr , Gavrushkevich Natalya
Published: December 2022

The principles of creating hybrid processing processes based on the functional approach are given. It is proposed to consider the formation of individual elements of the product (planes, holes, fillets, ledges) through functions that are provided by a combination of such elements. At the same time, the required depth of technological influences is analyzed, based on which a set of influences that are different in nature, but compatible, on some basic carrier, is selected. It is proposed to use a high-speed liquid flow as such a carrier. Hybridization of a tool based on a water jet of small diameter can be achieved by combining with laser heating, cryogenic cooling, and the formation of a flow of ice particles, mechanical initiation of surface damage with further development of surface defects. The high efficiency of hybrid processes for processing composite materials is shown.
Alternative technologies of composite highly loaded of aircraft structures: a qualitative method of making multi-criteria decisions. Part II. Modeling in multi-criteria evaluation of alternatives
Authors: Zabashta Volodymyr
Published: December 2022

The second part of the article is based on the starting points in the decision-making problem (DPR) indicated at the first stage of research [1, point 2.]. Here, the comparison of alternative autoclaved and non-autoclaved technologies for the production of carbon-plastic aircraft structures (AK) of the highly loaded type is continued wing caisson stringer panels (VSP) of B787, A350, MC-21, CSeries mainline aircraft. The main provisions of decision-making theory and a system-process approach with the involvement of practice results are taken as the methodological basis. From the beginning, the following are presented: a scheme for assessing the relative quality of technological process objects; a block-type conceptual model of the subject area of ​​decision-making and its basis; composition of selection criteria and indicators. Based on the above and with the involvement of autonomous dynamic systems (ADS) with discrete time, as well as the theory of the parabola (quadratic function), a formalized model of systemically grouped processes in the evaluation of alternatives is given. On this basis, the study of the essential differences of alternatives with the interpretation of topology ideas (homology groups) was continued to support the adoption of a reasoned final decision in the future, as the goal of modeling this separate side of the functioning of the technical system.
Modern Normative and Technical Support of Complex Technical Systems Projects
Authors: Kryvova Svitlana , Zubanyov Alexander , Zvorykin Konstantin , Trubachev Serhii
Published: December 2022

It is considered relevant to assess the potential of modern normative and technical support for programs/ life cycle projects of complex technical systems, which is based on system, process and project approaches, as well as on risk-oriented thinking, which is an integral condition for achieving (maintaining) competitiveness not only of products produced by the organization, but also the competitiveness of the organization itself.
To develop the procedure for evaluation of expediency of normative and technical documentation use in the field of project management and system engineering as a basis for the development of enterprise standards for science-intensive products life cycle ensuring.
For the analysis of the existing array of information materials for this problem, such criteria were proposed and substantiated, which allowed to perform a criterion analysis, involving a comprehensive analysis of the information material content, identification of criteria significant for the organization, and subsequent expert evaluation of sources of scientific and technical information. 
According to the results of the criterion analysis of the array of normative and technical documents that can be used by the domestic science-intensive sector of industry, the concepts of building of the programs/projects life cycle for the life cycle of complex technical systems were determined and recommended depending on the nature of the organizations' activities.               
The approach proposed allows to choose the basic concepts of normative documents as possible analogues for their use based upon the peculiarities of the enterprise's activity and the specifics of the science-intensive product.
Trends in the world market of material processing equipment in 2002-2021
Authors: Gnatush Vitaly
Published: December 2022

The world engineering industry is an important component of the world economy. The production of material processing machines using the latest technologies contributes to the further increase in the efficiency of the world industry and the quality of products. The promotion of the newest models of machines to the markets of the countries of the world contributes to the harmonization of their development. Therefore, it is relevant to conduct an analysis of statistical data, technical and economic reviews of the world market of material processing machines for 2002-2021 by country and company, as well as to identify trade trends in the short term. It is shown that the world export of material processing equipment during 2002-2021. characterized by instability. If during 2002-2012 the average annual growth rate (CAGR) of the export of these goods was 9.1%, then in the period from 2012 to 2021 it decreased to -2.4%. Among the five product groups of machines, only the export of goods of the group "Machines for processing using physical and chemical methods" during 2002-2021. is characterized by a positive average annual growth rate of 3.8% CAGR. According to the results of 2021 China (share 18.8%), Japan (16.6%) and Germany (15.0%) formed the top three exporters of material processing machines using electrophysicochemical methods. The largest exporters of metalworking centers in 2021. were Japan (share 30.5%), Germany (20.4%) and Taiwan (10.0%). The leaders of the world export of metal-cutting lathes in 2021. were Japan (22.0% share), Germany (13.3%) and the Republic of Korea (11.3%), which together provided 46.6% of global sales. . According to the results of 2021 the market leaders of metal cutting machines (milling, drilling, etc.) are Germany (19.9% share), Italy (13.2%) and China (12.6%), and their combined share is 45.7%. . The world market of grinding machines is dominated by companies from Germany (22.3%), Japan (14.8%), and Switzerland (14.1%). According to the results of 2021 the largest exporters of planing machines were Germany (29.1% share), China (16.6%) and Japan (9.8%), which together make up 55.5% of the value of world exports. Obviously, the further development trend of the market of material processing machines, as well as the global economy, will be determined by the results of the end of the COVID-19 pandemic and the Russian-Ukrainian war