bluuebunny/crossref_metadata_2025 huggingface dataset:
Conformational Change of Nucleosome Arrays prior to Phase Separation
Authors: Zhang Meng , Celis César-Díaz , Liu Jianfang , Bustamante Carlos , Ren Gang (Gary)
Published: January 2023

Chromatin phase transition serves as a regulatory mechanism for eukaryotic transcription. Understanding this process requires the characterization of the nucleosome array structure in response to external stimuli prior to phase separation. However, the intrinsic flexibility and heterogeneity hinders the arrays’ structure determination. Here we exploit advances in cryogenic electron tomography (cryo-ET) to determine the three-dimensional (3D) structure of each individual particle of mono-, di-, tri-, and tetranucleosome arrays. Statistical analysis reveals the ionic strength changes the angle between the DNA linker and nucleosome core particle (NCP), which regulate the overall morphology of nucleosome arrays. The finding that one-third of the arrays in the presence of H1 contain an NCP invaded by foreign DNA suggests an alternative function of H1 in constructing nucleosomal networks. The new insights into the nucleosome conformational changes prior to the intermolecular interaction stage extends our understanding of chromatin phase separation regulation.
Stabilization remediation of soil polluted by heavy metals using palygorskite modified with chlorides
Authors: Mohamed Elnour , Ren Jun , Ren Hanru , Tao Ling , Mala Azizza
Published: January 2023

Chlorides with palygorskite modifications have been more successfully used to remove heavy metal pollution from field soils. A pot experiment was used to examine the effects of amendments on the growth, biological concentration factor, bioaccumulation factor, and biological evaluation of heavy metals in corn (Zea mays L.).The palygorskite modified (with five various chlorides from PAL-Na to PAL-Al) and the PAL modified (with the non-amendment as the control) were used to remedy soil-contaminated pollution. Scan electrically microscopes SEM and X-ray deflection was utilised to characterise the modifications in the exterior and internal structure. In order to determine the bioavailability and stabilising effectiveness, CaCl2-extractable and part of the toxic characteristic leachable procedure were applied. To estimate the efficiency of stabilisation, the accumulations of minerals in roots and shoots (fresh and dry weight) were assessed. The palygorskite-modified with five chloride particles are dispersed consistently and are greatly established on the surfaces of the palygorskite, according to SEM and XRD. The TF amounts for Cd, Cu, Pb, and Cr were < 1, and the BCF and BAC amounts were obviously larger in the lower than in the upper parts. In conclusion, effectively reducing the bioavailability and movability of heavy metal in soil was achieved by applying palygorskite-modified chloride. In Cd, Cu, Pb, and Cr-contamination soils the stabilisation performed better when palygorskite-modified chlorides were applied than palygorskite alone. Therefore, it was a practical and potentially useful substance that might be used to efficiently ameliorate heavy metal contamination in soil and could have been high and accessible usage on the field scale.
Implementation of a referral pathway for cancer survivors to access allied health services in the community
Authors: Russell Lahiru , McIntosh Rebecca , Martin Carina , Soo Wee Kheng , Ugalde Anna
Published: January 2023

Background
The growing demands for multidisciplinary cancer survivorship care require new approaches to address the needs of people living after a cancer diagnosis. Good Life–Cancer Survivorship is a self-management support survivorship program delivered by community allied health (AH) services for people diagnosed with cancer. A pilot study established the benefits of Good Life–Cancer Survivorship to help survivors manage their health and wellbeing in the community health setting. This study expanded the program to four community health services and evaluated the implementation outcomes of the survivorship program.
Methods
Eligible cancer survivors attending hospital oncology services were referred to the survivorship program. Data was collected between 19/02/2021-22/02/2022 and included allied health service utilisation, consumer surveys, and interviews to understand consumer experience with the survivorship program. Interviews and focus groups with hospital and community health professionals explored factors influencing the survivorship program uptake. Implementation outcomes included Adoption, Acceptability, Appropriateness, Feasibility, and Sustainability.
Results
Of 35 eligible survivors (mean age 65.5 years, SD=11.0; 56% women), 31 (89%) accepted the referral. Most survivors had two (n=14/31; 45%) or more (n=11/31; 35%) allied health needs. Of 162 AH appointments (median appointment per survivor=4; range=1-15; IQR:5), 142/162 (88%) were scheduled within the study period and 126/142 (89%) were attended. Consumers’ interviews (n=5) discussed the referral pathway; continuation of survivorship care in community health settings; opportunities for improvement of the survivorship program. Interviews with community health professionals (n=5) highlighted the impact of the survivorship program; cancer survivorship care in community health; sustainability of the survivorship program. Interviews (n=3) and focus groups (n=7) with hospital health professionals emphasised the importance of a trusted referral process; a holistic and complementary model of care; a person-driven process; the need for promoting the survivorship program. All evaluations favourably upheld the five implementation outcomes.
Conclusions
The Good Life–Cancer Survivorship program supported survivors in self-management strategies through accessible and tailored community allied health services. The survivorship program was well adopted and demonstrated acceptability, appropriateness, and feasibility by all parties involved. Findings support the delivery of cancer survivorship care in community health settings with recommendations from clinicians to sustain the referral pathway.
Solvent shared ion pairs and direct contacted ion pairs in LiCl aqueous solution by IR ratio spectra
Authors: Jin Zeya , Wang Zhiqiang , Zhang Ruiting , Ma Lin , Lin Ke
Published: January 2023

The micro-structure and molecular interactions of Li+ salt in aqueous solutions is important in many fields. However, whether the solvent shared ion pairs and the direct contacted ion pairs exist in LiCl aqueous solutions or not, and the details about these ion pairs are still under debate. Here, we proposed a novel IR ratio method. Using this method, the hydration spectra of Cl− in LiCl, NaCl and KCl aqueous solutions were measured from the diluted concentration to the highly concentrated solution. Hydration number of Cl− from the hydration spectra was determined to be ~ 2 in the aqueous LiCl. These data demonstrated that about 3 ~ 4 Li+ replaced some water molecules in the first hydration shell of Cl−. As the concentration of LiCl increased, abnormal increase in the hydration number was observed. This is because the water molecule that bridges Li+ and Cl− in the solvent-sharing ion pair are particularly stable, which was directly proven by the red shift of the hydration spectra of Cl− in the O-H stretching region. All the hydration spectra and hydration numbers not only applied to uncover the solvent shared ion pairs and direct contacted ion pairs in LiCl aqueous solution, but also can be employed to the benchmark of force fields in the molecular dynamics simulations.
Whole Exome Sequencing for the Diagnosis of Rare Genetic Neurodevelopmental Disorders Associated with Cerebellar Atrophy
Authors: Ashaat Engy A. , Ahmed Hoda A. , Elaraby Nesma M. , Fayez Alaaeldin , Metwally Ammal M. , Mekkawy Mona K. , Ashaat Neveen A. , Elhossini Rasha Moheb , ElAwady Heba Ahmed , Abdelgawad Randa H. A. , Gammal Mona El , Kersh Mohamed Ahmed Al , Saleh Dina Amin
Published: January 2023

Neurodegenerative disorders (NDs) are rare multifactorial disorders characterized by dysfunction and degeneration of synapses, neurons, and glial cells which are essential for movement, coordination, muscle strength, sensation and cognition. It may also be associated with neuroinflammation and oxidative stress. Several genes have been identified underlying the different forms. Herein, we describe seven patients from 6 Egyptian families. The core clinical features of our patients included dysmorphic features, neurodevelopmental delay or regression, gait abnormalities, skeletal deformities, visual impairment, and seizures. Previously unreported clinical phenotypic findings were recorded. Whole-exome sequencing (WES) was performed followed by in silico analysis of the detected genetic variants effect on the protein structure. Three novel variants were identified in three genes “MFSD8 (CLN7), AGTPBP1, and APTX” and other previously reported three variants have been detected in “TPP1, AGTPBP1 and PCDHGC4” genes. In this cohort, we described the detailed unique phenotypic characteristics in view of the identified genetic profile in patients with ND disorders, hence expanding the mutational spectrum of such disorders.
Policy strategies to achieve zero hunger by 2040 at the country-level
Authors: Verhagen Willem , Bohl David , Pulido Andres , Pirzadeh Audrey , Meisel Collin , Solorzano José , Hughes Barry , Moyer Jonathan
Published: January 2023

Sustainable development goal 2 aims to end hunger in all its forms by 2030, achieved through a joint policy strategy on raising food production and food access. Most model-based projections on undernourishment towards 2050 focus on sustainably producing enough food, rather than on ending hunger. We compare policy strategies on food supply and food access to lower undernourishment in 2040 for 151 countries. Here, we show that in a Business-as-Usual scenario (BaU) 3.3% of the world population is undernourished by 2040. We develop 27 regional policy target-scenarios on Producing More Food (PMF), Raising average Caloric Consumption (RCC) and within-country Equal Food Distribution (EFD). RCC lowers undernourishment to 2.2%, followed by EFD (2.6%) and PMF (2.7%). For world regions results are mixed, with either RCC or EFD generating the strongest reduction in undernourishment. For individual countries, 90 countries achieve SDG2 in 2040 in the BaU-scenario. In PMF, 18 additional countries achieve SDG2, versus 30 countries in EFD and 38 countries in RCC. Both food supply and food access policy strategies can achieve SDG2, but raising food access results in greater progress at all scales. Long-term food security studies should move beyond environmentally sustainable agricultural policy strategies, as socio-economic policies on food access and inequality policies will determine the future of food security.
Henrietta Vladimirovna Arkhangelskaya (to the 65th anniversary of labor activity at FBUN NIIRG them. P.V. Ramzaev).
Authors: Editorial Article
Published: January 2023

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JOURNAL OF RADIATION HYGIENE – INSTRUCTIONS FOR AUTHORS
Authors: Editorial Article
Published: January 2023

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The effect of detailing the trabecular structure of bone phantoms on the assessment of the bone marrow dose from 89,90Sr
Authors: Sharagin P. A. , Shishkina E. A. , Tolstykh E. I. , Degteva M. O.
Published: January 2023

Today there exist two main approaches to developing computational phantoms for bone dosimetry. The first approach is based on a detailed description of the microarchitecture of the spongiosa filling the phantoms. This microarchitecture includes trabeculae and bone marrow separately, i.e., the source tissue and the detector tissue are separated. The second approach involves generating a homogeneous bone where the target and source tissues are combined. In both cases the simulation results are conversion factors that allow converting the specific activity of incorporated radionuclides into the absorbed dose in the bone marrow. For dosimetry of the Techa River population exposed due to incorporated 89,90Sr, the skeletal phantoms were created for people of different sex and age, starting with a newborn. These phantoms included a detailed description of the trabecular bone microstructure, i.e., they belong to the first approach. Also, phantoms of the skeleton of the fetus and pregnant woman at various gestation stages have been developed, which involves modeling the bone as a homogeneous medium. These phantoms are designed for dosimetry of external and internal exposure, including 89,90Sr dosimetry. The usage of two fundamentally different approaches to bone dosimetry for the pre- and postnatal period raises the issue of compatibility of these approaches and possibility of their combining within a single dosimetric system. Objective: to evaluate the effect of detailing the trabecular structure of bone phantoms on the evaluation of conversion factors of bone marrow exposure due to 89,90Sr. Computational phantoms of eight regions of a newborn’s skeleton filled in with trabecular bone were generated. For each bone region two phantoms were generated: one phantom with a detailed description of the spongiosa microstructure and one phantom with spongiosa modeled as a homogeneous media. For all phantoms, the radiation transport from 89,90Sr incorporated in the source tissue was simulated using the MCNP 6.2 code, and the values of conversion factors were calculated. As a result, 16 conversion factors were obtained for all phantoms. On the average the conversion factors obtained for phantoms with homogeneous spongiosa exceed those for phantoms with a detailed description of the spongiosa microstructure by 2.4 times. Such significant difference between the results makes it possible to conclude that the detailing description of trabecular structure of bone phantoms has a significant impact on the assessment of the bone marrow dose due to incorporated 89,90Sr.
O seeking Flaubert, you have foreseen us (The Russian translations of Salambbô as an indicator of the change of cultural epochs)
Authors:   Institute of Russian Literature (Pushkin House) of the Russian Academy of Sciences,, Bagno Vsevolod E. , Misnikevich Tatiana V. ,   Institute of Russian Literature (Pushkin House) of the Russian Academy of Sciences,
Published: January 2023

Gustave Flaubert is one of those writers who had a significant impact on the formation and the development of the Russian literary process; being the brightest representative of French literature of the era of realism, Flaubert played a significant role in Russia’s transitional epoch. Working on the novel Salambbô (1862), Flaubert foresaw its ill fortunes in modern France and in the modern epoch as a whole. Since the 1890s, many representatives of Russian modernism saw a teacher and a predecessor in the French writer and translated his works (I.Bunin, D.Merezhkovsky, K.Balmont, M.Gorky, N.Minsky, Al. Chebotarevskaya, M.Voloshin, A.Blok, Vyach. Ivanov, B.Zaitsev, M.Kuzmin). A line from Balmont’s poem The World Communion (1905) — O seeking Flaubert, you have foreseen us — can serve as an illustration of Flaubert’s Russian fate. In general, the interest in Salambbô is explained by an acute interest in exotic epochs and countries, a desire to distance oneself from vulgar, bourgeois in modernity, a heroine whose image is built on the intersection of mystical and erotic elements in woman’s life, а striving for perfection in the mastery of word. Many Russian writers of the late 19th and early 20th centuries passed through the school of Flaubert with his wonderful experience of recreating the atmosphere of Carthage and the Middle East, relying both on historical sources, as well as in the field of language and style, on Holy Scripture.
The presence of the possible world of cinema text in the modern screenplay
Authors:   Herzen State Pedagogical University of Russia, Martianova Irina A.
Published: January 2023

The article analyzes the presence of the possible world of film text in A.P.Zvyagintsev’s and O.I.Negin’s screenplay Dislike. This text for the first time became the subject of philological analysis using comparative and contextual-functional methods. The director’s published comments allow tracing the path from the literary screenplay itself to the film text. As a result of the sampling of linguistic material, which reveals the presence of the possible world of the film text in the script, the specificity of its categories (integrity, coherence, completeness, dynamics, etc.) was revealed. The possible world of cinema text determines the a priori variability and uncertainty of the script text. The article reflects the features of the scenario functioning of lexical-grammatical and syntactic language means. The screenplay and the film text are interdependent, but not identical entities. It has been established that the development of the technical parameters of the film text has an indirect effect on the film script. One of the aims of the study is to critically analyze the notions that the screenplay does not have the merits of a literary text. In the course of analyzing the presence of a possible world of film text, the working hypothesis was confirmed that a film script is a text with a motivated violation of communicative and pragmatic norms (accuracy, relevance, expressiveness). It represents a new type of text, the anomalies of which are due to its intended purpose for semiotic translation into cinematic text, the diverse nature of its receptive program.
The Image of a Saint through the Prism of Earthly Living: On the Compositional Role of a Saint in Icons with Vita Scenes in ‘Srednik’ in the Second Half of the 17th Century
Authors:   Lomonosov Moscow State University, Aitova Sofia N. ,   Central Andrey Rublev Museum of Ancient Russian Culture and Art
Published: January 2023

In this article we take up a problem concerning the compositional and semantic role of the saint’s image in the new vita (living) icons type, appeared in the 17th century in Old Rus’ (for example, vita icon of the Saint John the Forerunner taking place in the iconostasis of the church of Elijah the Prophet in Yaroslavl, beginning of the 1660s). Such an approach is unique except for Preobrazhenskii’s article. This article is interdisciplinary in nature dealing with a problem of narration inherent to the Christian art, of the relationship between icons and sociocultural tendencies in the transitional period of the Late Middle Ages in Russia. This study allows to consider icons not only in the context of Old Rus’ painting, but also like an expression of the universal functioning, compositional structure and rhetoric of the image. Attention to the saint’s image, represented as a “portrait”, is explained by the fact that the narrative cycle is placed in the saint’s zone. In the traditional vita (living) icon a saint is placed in the central zone (“srednik”) being semantically the same as the saint in the new type. The narrative cycle is placed on the border. Thus the saint in the new icons’ type is regarded from the perspective of the earthly living. Through the Christian history of image a saint’s “portrait” is often presented in some implicit narration even if there’s no plot. In our article this effect is more intensified because of the focus on the earthly world occupying almost all the composition. The painting technique called “life-likeness” (“zhivopodobie”) also contribute to this effect. Moreover, we think that the saint’s image in these icons follows the Stroganov school icons in the context of the transformations of the self-consciousness in the 17th century.
From comparative studies to hermeneutic cartography of world philosophy
Authors:   St. Petersburg State University, Kolesnikov Anatoly S. , Alieva Cholpon E. ,   International University of Kyrgyzstan,   International University “Ala-Too”
Published: January 2023

The radical change in the status of non-Western philosophical traditions was the trigger for the development of the methodology for studying philosophy between cultures, the revision of the nature of philosophy itself, which is a matter of metaphilosophy. Hermeneutic works appear on the fundamental fabric of philosophical ideas — basic concepts, their relationship to other ways of thinking, considering their potential and alternative productive lines. Thus, the history of comparative philosophy, through its stages, is formed into a single scheme of complementary philosophical activity and a single comprehensive metaphilosophical project. It is revealed through an “archival” approach (exploring single philosophical traditions in parallel), “equivalent” (comparing the existing traditions in the context of analogies and contrasts), and “problem solving” (using many traditions to provide philosophical solutions), and through a comprehensive hermeneutic project of “cartographic” concepts and their possibilities. This constitutes a theory of philosophy that draws on multiple perspectives of the interconnected traditions of East and West, implicitly participating in mapping the underlying eidetic structure on which philosophy does its work, and outlining conceptual possibilities around any idea. There is a need to study the ability of philosophy to form a broader hermeneutic understanding of the field of concept, giving rise to each philosophical problem, comprehended in their strengths and weaknesses and in connection with alternative configurations — under traditions, conditions, periods and cultures A view of global philosophy is formed, which brings us back to the old idea that philosophy stays above pragmatic goals, it takes on the eidetic fabric of ideas of the world — past, present, possible — as an object of a special kind of hermeneutic understanding, including applied problems in a broader speculative frame, that is, cleaned up through a comparison of radically different approaches. It is here, in philosophy as a study of the “structure of ideas themselves”, that we will see a multicultural philosophy proving its indispensability.
The relevance of J.G.Fichte’s Wissenschaftslehre (towards the 260th anniversary of the thinker’s birth)
Authors:   Friedrich-Schiller-Universität Jena, Vieweg Klaus , Ivanenko Anton A. ,   St. Petersburg State University, Muravev Andrei N. ,   St. Petersburg State University
Published: January 2023

260 years since the birth of Fichte give a good reason to turn to his Wissenschaftslehre, which, together with Kant’s critical philosophy, is a bridge from the past to the future state of philosophical and scientific culture. The first and second parts of the article explore the little-known to Russian historians of philosophy controversy about the spirit and letter of Kant’s teaching, which flared up at the end of the 18th century in Germany and had a discrepancy between Kant’s intention to turn metaphysics into a science and the negative result of all three of his “Critics” in this point. In a dispute with Reinhold, Kreuzer, Schulze (Enesidem), Schmid and Krug, who interpreted Kant’s critical philosophy as based on sensory-rational experience, Friedrich Schlegel, Schelling and Hegel acted as a united front on the side of Fichte. Their consolidation was needed in order, in the struggle against the quasi-philosophy of their time, to support the movement started by Kant and continued by Fichte to reveal the basis of experience, neutralizing dogmatic and skeptical conclusions from the naive-realistic theory of knowledge. In the third part of the article, the reason for this instructive controversy is clarified and it is shown that the innovations of the late period of Fichte’s work do not concern the monistic principle of Wissenschaftslehre, but affect that has become negative the thinker’s attitude to the history of philosophy. It is concluded that the need to overcome Fichte’s ahistorism does not detract, but, on the contrary, only increases the relevance of Fichte’s Wissenschaftslehre as one of the most important moments of the historical development of the logical method.
The decline of technogenic civilization: Sufficient development strategy
Authors:   Belarusian State University, Vodop’yanov Pavel A. , Danilov Alexander N. ,   Belarusian State University
Published: January 2023

The first quarter of the 21st century was marked by global instability. Sharp climate changes, biodiversity loss, exponential population growth, a lack of natural resources and living space, environmental pollution form a complex of current global issues that pose a threat to the humanity’s future. The article demonstrates the destructive nature of the established consumer vector of development, which underlies the modern economic model, and also reveals the negative aspects of scientific and technological progress that led to the global environmental crisis. Overcoming these negative trends presupposes the choice of new strategies for socioeconomic development, which are based on its alignment with the laws of evolution of the biosphere. The achievement of a secure future implies the preservation of natural ecosystems considering their ability to self-repair disturbed processes within the economic capacity of the biosphere, since its excess leads to a violation of the biological cycle of energy and matter, and to the ecological imbalance in the biosphere. Taking into account the patterns of conservation of natural ecosystems and the biosphere as a whole, the authors propose the strategy of sufficient development, and determine related implementation measures. They include development of environmentally safe technologies and the approval of a new humanism as a necessary condition for achieving a secure future. The authors argue there is a need in the radical revision of value orientations in order to achieve a secure future. This revision presupposes redirecting people from the anthropocentric orientation in relation to nature to the bio-anthropocentric orientation, which takes into account the need to preserve nature and the spiritual world, and preserves the moral foundations of the development of society.
Eastern Patristics on Duality Eastern patristics on duality of the human being and deification of the mankind
Authors:   Peoples’ Friendship University of Russia (RUDN University), Chistyakova Olga V.
Published: January 2023

Religious and anthropological issues of the Eastern Patristics legacy are under consideration in the article. The conceptual justification of the human being by Greek-Byzantine Church Fathers is submitted, paying attention to antinomianism in understanding the Man essence. The human duality is analyzed in tight with the diversity of historical theologian approaches to clarifying the New Testament thesis on the creation of Man in the image and likeness of God. In this context, a doctrine of Irenaeus, a Church Father of the ante-Nicene period of Christianity, some ideas of a non-canonical Early Christian manuscript, The Shepherd by Hermes of Philippopolis, and teaching on Man by Gregory of Nyssa as one of the profound representatives of the Patristics’ classical period are presented. The author examines a notion of deification with specific stress on its religious and philosophical meanings. Deification is studied both as the theoretical foundation for the Eastern Christian anthropological tradition forming over the Middle Ages and as the religious gnosis, purifying, perfecting, and transfiguring of a human being on their God knowing ascending path. Deification is deduced as a peculiar style of life that aims at the eschatological and soteriological prospects of human existence, which are correlated with the highest religious morality and eternal desire to reach the cherished spiritual state of God and Man union. In this regard, the doctrine of a follower of allegorical theology, Maximus the Confessor on the Logoi, or God’s energies, is very significant as well as his interpretation of the notion of deification. According to St. Maximus, the comprehension of Logoi by the human being supports the unification of the mundane world with the Creator (the omnipotent Logos). It means the deification of the entire humanity. The article is based on the texts of Church Fathers, which are the sacred primary sources of Christianity.
Studying the Factors of Virtual Museum Design on the Visitors’ Intention and Satisfaction
Authors:   Department of Distribution Management, Tongmyong University, Busan, Korea, Seung-Wan Ju , Kang Zou , Dong Wang
Published: January 2023

This study is to suggest a plan for attracting visitors who are a requisite for the survival of museums by combining design factors that visitors can most easily recognize in virtual museums and linking the satisfaction of visitors through the research on the relationship between the design factors of virtual museums in national museums and the satisfaction of visitors. To meet the purpose of the study, the theoretical basis of virtual museum, design factor, satisfaction, and intention to visit was examined through domestic and foreign literature and previous studies. Based on this, research the model and research hypothesis were set up and verified through empirical research. For a more empirical study, after the suitability of the questionnaire through previous studies was examined, 400 questionnaires were distributed to visitors who visited the enterprise exhibition hall in the metropolitan area of Korea. Of these, 340 were used as the final analysis data. The collected questionnaires were analyzed by demographic analysis, descriptive statistics analysis, validity and reliability analysis, correlation analysis, and multiple regression analysis using SPSS Ver. 25. Based on the results of the empirical statistical analysis, the study set the direction of the research considering the realistic meaning of the research results. Through the empirical analysis of this study, it was found that the satisfaction with the design factors of colour, graphics, and letters visitors to the virtual museum lead the s to a positive intention of visiting the museum based on the future existence and operation. Therefore, while the promotion of museum collections or museum-related products is very important when the operation or opening of a virtual museum is intended, the persons concerned should recognize that improvement of design factors is an important thing to induce the audience’s on-site visit. In this regard, this study implies that it found out that design factors are important aspects attracting visitors and suggested the direction of maintenance and operation of museums. In future studies, it is required to expand the selection of objects for the operation and maintenance of private museums, not national museums. In addition to the design factors presented in this study, it is necessary to research to maximize the efficiency of the virtual museum operation through the verification of various design-related factors.
Analyzing the Factors of College Life Adaptation and Dropout: A South Korean Context
Authors:   Faculty of Liberal Arts, Eulji University, Gyeonggi-do, Republic of Korea., Kim Eun Joo
Published: January 2023

This study analyzed the difference in the probability of dropping out by gender and department to identify the variables influencing the likelihood of dropping out of college students. Moreover, the following factors were primarily investigated among various causes of college student dropout: academic integrity, social integrity, emotional stability, career identity, college education satisfaction, educational service satisfaction, relationship with professors, economic stability, family emotional support, academic continuity, and stability. The data analysis was carried out for one month, from October to November 2021, for students enrolled in a four-year E institution in Gyeonggi-do. Data collection was conducted through an online survey. The effective sample number of students used in this study was 771. As a measurement tool, the college life adaptability test tool was used, and the analysis methods were cross-analysis, correlation analysis, independent-sample t-test, and logistic regression analysis. As a result of the study, the probability of dropout was higher for male students than for female students by gender, and the physical therapy department had a relatively high dropout probability compared to other departments. In addition, a negative correlation was discovered in both the sub-factors of dropout possibility and college life adaptability, and the difference in college life adaptability according to dropout possibility showed that the group with the possibility of the dropout was the group without the possibility of dropout. In comparison, the level of adaptability to college life was found to be low. Moreover, college education satisfaction and education service satisfaction were found as sub-factors of college life adaptability that predicted the possibility of dropout. The results of this study imply that the causes of college dropouts should be investigated at the institutional and government levels, not only at the individual level.
Public Relations and Social Media for Effective Crisis Communication Management
Authors: Babatunde Kamaldin Abdulsalam
Published: January 2023

Crisis, natural or man-made, is inevitable in our life because of human social interactions. Crises are caused by ineffective communication yet are better solved with effective communication. Scholars have studied social media's role in crisis management as an information propagator and their cost effectiveness during a crisis. Social media can potentially influence multiple public strata during and after the crisis. Social media serves as tools for relationship management which is a crucial part of crisis management; equally, public relations also serve the same. This paper explores how effective crisis communication management can be achieved via Social Networking Systems (SNS). Drawing from the existing literature as the method used, this paper reviews articles and studies on public relations strategy and effective crisis management. It expounds on examples of how relationships can be well-managed through social media in crises. This paper has increased our knowledge of crisis management by understanding how crises are managed. Findings are that crisis communication was managed from four conceptual lenses scholars have investigated; that crises can be prevented- partially if not completely- with a proper crisis communication plan; that having a crisis communication plan may not suffice except is handled by professional relationship managers who know how to communicate and understand the use of the conventional and new media with the influential role of symmetrical communication. Therefore, the paper concluded that since crisis leads to a bad relationship due to a lack of understanding of the situation and behavior and to facilitate this, it suggests that crisis is better managed through effective public relations managers.
Dependence of the Sputtering Yield on the Angle of Ion Incidence on the Target Surface
Authors: A. I. Tolmachev  , L. Forlano
Published: January 2023

We investigated the behavior of sputtering yield for oblique angles of ion incidence on the target surface. The range of incidence angles varied from 0o (normal incidence) to almost 90o (limiting grazing incidence). Computer simulation was performed by the program PAOLA. Theoretical analysis included numerical solution of the Chandrasekhar integral equation. The results obtained are compared with the results of other authors Keywords: sputtering under ion bombardment, oblique ion incidence, sputtering yield, computer simulation, theoretical analysis.
Model of non-spherical particles' rebound and scattering at high speed interaction with a streamlined surface
Authors: Panfilov S. V.  , Tsirkunov Yu. M.
Published: January 2023

A new model is proposed for a non-spherical solid particles' impact interaction with a surface as applied to gas-particle flows over surfaces. The range of a particle impact speed typical for a vehicle flight in a dusty atmosphere is considered. The model is based on the laws of mechanics and experimental data on the restitution coefficient of the particle normal velocity. The tangential force impulse during a particle-surface interaction is assumed to be proportional to both the normal impulse and the mean tangential velocity of the particle contact point. The space orientation of incident particles relative to the surface is considered as random. The rebound of particles of different shape with varying shape parameters and of a particle mixture is studied numerically. Statistical characteristics of particles' rebound and scattering are obtained. Comparison with the known experimental data of numerical results for the mean values of the normal and tangential velocities of the particles' gravity centers in the plane of impact after rebound showed their good agreement. Keywords: dispersed particles, 3D model of impact, numerical investigation, statistical characteristics of rebound and scattering, comparison with experimental data.
Electrodynamic model of combustion chamber using subcritical streamer discharge to ignite fuel mixture
Authors: Bulat P. V.  , Volkov K. N.  , Esakov I. I.  , Lavrov P.B.  , Ravaev A. A.
Published: January 2023

Various electrodynamic models of a combustion chamber, in which an initiated subcritical streamer discharge is used to ignite a combustible mixture, are considered. To localize the discharge in the working chamber, discharge initiators are used based on half-wave electromagnetic vibrators with resonant properties. The dependences of the structure of the electric fields that form the discharge on the geometric parameters of the discharge initiator are obtained on the basis of numerical calculations, and the issues of matching the chamber with the radiation generator are considered. Comparison of the calculation options for different positions of the initiator of the discharge in relation to the optical centreline of the camera. Possibilities for further enhancement of the field in the working zone at the poles of the microwave discharge initiator, which is required for the formation of discharges with a developed streamer structure at elevated gas pressures in the combustion chamber, are discussed. The ways of increasing the resulting electromagnetic field in the area of vibrators for the formation of discharges with a volumetric structure have been determined. Keywords: microwave radiation, streamer discharge, electrodynamic model, plasma combustion, combustion chamber.
On the problem of acceleration of fast ignition thermonuclear targets with two cones
Authors: Shmatov M. L.
Published: January 2023

The problems of acceleration of fast ignition thermonuclear targets with two cones for their high-precision injection into region near the center of the reactor chamber are considered and the possibility of solution of these problems is shown. A brief review of discussed variants of such targets and of their main advantages, related to ignition of microexplosion and simplicity of providing preservation of targets workability during their flight in the reactor chamber, is presented. Fast ignition by microexplosion of two-sided cone target and the method to estimate acceptable speed of stabilizing rotation of thermonuclear target are proposed. Keywords: controlled thermonuclear fusion, inertial confinement, fast ignition, two-sided cone targets, spin stabilization of flight.
Duration of runaway electron current pulses when applying voltage pulses with a subnanosecond rise time
Authors: Tarasenko V.F.  , Beloplotov D.V.  , Sorokin D.A.
Published: January 2023

The conditions for obtaining runaway electron (RE) current pulses with a minimum duration at a subnanosecond breakdown of centimeter gaps filled with air at atmospheric pressure were studied. It is shown that the RE current pulse duration depends on many parameters, such as the cathode form, the magnitude of the interelectrode distance, the diameter of the diaphragm, which is part of the anode, as well as on the size of the receiving part of the collector. It has been established that the use of cathodes with an extended edge having a small radius of curvature, RE current pulses consisting of two peaks of picosecond duration can be recorded. Keywords: runaway electrons, beam current, picosecond pulse duration, subnanosecond breakdown.
Pulse Conductivity in Ag-Pd Resistors Induced by Laser Pulses
Authors: Aleksandrov V. A.  , Besogonov V. V.  , Kalyuzhnyi D. G.
Published: January 2023

Pulsed EMF in resistive thick-film Ag-Pd elements is experimentally studied when their surface is irradiated with a laser beam. The dependences of the pulsed EMF on the coordinate of the action of the laser beam on the film surface are obtained. It is shown that applying a constant bias voltage to a thick-film resistive element can significantly increase the amplitude of unipolar EMF pulses induced by laser pulses. It was found that the amplitude and frequency of the EMF signals depend, respectively, on the power and frequency of laser pulses. It is shown that by the value of the pulsed EMF it is possible to control the parameters of the high-power laser radiation incident on the surface in real time. The design of a receiver for recording the parameters of laser radiation based on an Ag-Pd sensitive element has been developed. The sensitivity of the device for measuring the power and pulse repetition rate is estimated. Keywords: measurement of laser parameters, thick-film resistor, thermo EMF.
The Modelling of the acquiring of "raw" projection data in single-photon emission computed tomography
Authors: Gurko M. A.  , Denisova N. V.
Published: January 2023

The statistical modeling software package of the data acquisition at examining patients by single-photon emission computed tomography has been developed and tested. The modeling was performed by the Monte Carlo method and included the interaction effects of gamma radiation with matter under radiation transferring through biological tissues and through the collimator-detector system. The calculation of the gamma quanta transferring through the collimator has been verified by simulating clinical "syringe test". Using the developed software package and the anthropomorphic mathematical model simulates a "virtual patient", the acquisition of "raw" projection data has been performed under conditions close to clinical practice. The images obtained are in agreement with clinical data. Keywords: gamma radiation, collimator, Monte Carlo, modeling, phantom.
Gas sensitivity of nanostructured coatings based on zinc oxide nanorods under combined activation
Authors: Ryabko A.A.  , Bobkov А.А.  , Nalimova S.S.  , Maksimov A.I.  , Levitskii V.S.  , Moshnikov V.A.  , Terukov E.I.
Published: January 2023

This paper presents a study of the gas sensitivity of a nanostructured zinc oxide coating to isopropyl alcohol vapor during heating, ultraviolet irradiation, as well as simultaneous heating and irradiation. Simultaneous heating to 150oC and ultraviolet irradiation ensures an increase in the sensor layer response. A 10-fold decrease in the power consumption of an ultraviolet light-emitting diode results in a 1.2-fold decrease in the response of the sensor coating. Reducing the operating temperature of a gas sensor with low power consumption and achieving the required sensitivity can provide adsorption sensors integration into portable devices for monitoring ambient air quality. Keywords: zinc oxide, nanorods, gas sensor, UV irradiation, combined activation.
Probing the Frequency Dispersion of the Magnetic Permeability of a Sample During Dynamic Interaction with a Magnetized Probe
Authors: Dedkov G. V.
Published: January 2023

The forces acting on a magnetic particle during nonrelativistic motion parallel to the surface of a homogeneous medium with a frequency dispersion of magnetic permeability are considered. General expressions are obtained for the normal (attractive) and lateral (braking) forces acting on a small dipole particle and an extended probe. It is shown that for an arbitrary orientation of the vector of the dipole magnetic moment of the particle, along with the force of attraction and the stopping force, there also appears a velocity-dependent lateral force perpendicular to the velocity vector. The possibility of using the results to study the frequency-dependent magnetic permeability of nanostructured materials and films in the dynamic scanning mode of magnetic force microscopy with magnetic probes is discussed. Numerical estimates are given for the magnitude of the expected forces, friction coefficients, and changes in the quality factor of the MFM oscillators in the case of frequency dispersion of relaxation-type magnetic permeability. Keywords: nanostructured magnetic materials, frequency dispersion of magnetic permeability, magnetic force microscopy.
High-speed low-temperature gas analyzer for pulsed emissions of liquefied natural gas into the atmosphere based on immersion diode optocouplers
Authors: Zagnit'ko A.V.  , Matsukov I. D.  , Pimenov V.V.  , Sal'nikov S.E.  , Fedin D.Yu.  , Alekseev V.I.  , Vel'makin S.M.
Published: January 2023

A low-temperature infrared optical gas analyzer based on immersion diode optocouplers with a speed of less than 0.03 s has been developed to detect pulsed emissions into the atmosphere of explosive mixtures of liquefied natural gas and alkanes with air at a temperature of more than 150 K with the transfer of digitized data to a remote server. The design is described and its characteristics are given in the process of analyzing mixtures of air with pure methane, ethane, propane and LNG of various compositions. It is shown that the speed and operating temperature range of the gas analyzer exceed the parameters of foreign and domestic analogues for monitoring man-made LNG emissions into the atmosphere. Keywords: alkanes, speed, infrared optical gas analyzer, pulse emissions, immersion diode optocouplers, liquefied natural gas.
Shifting the flow stability limit in the presence of random fluctuation of the rotational velocity
Authors: Zhilenko D.Yu.  , Krivonosova O.E.
Published: January 2023

Nonlinear stability of the isothermal three-dimensional flows of viscous incompressible fluid in the rotational spherical layer with the noise presence was studied numerically. Transition between stable non-stationary flow and unstable flow in the form of travelling azimuthal waves is under consideration. Small-amplitude noise inserted to the flow by random broadband disturbances of the inner sphere rotational rate about constant at time averaged value, outer sphere is fixed. An approach is proposed to simplify finding the critical Reynolds number, corresponding to the stability limit in the presence of noise. The results obtained by the proposed and well known methods are compared. Keywords: noise, rotational flows, spherical Couette flow, instability control.
Magnetism of nanoporus carbon with manganese clusters
Authors: A.M. Danishevskii  , B.D. Shanina  , N.V. Sharenkova  , S.K. Gordeev
Published: January 2023

Theoretical calculations of the electron density (taking into account the spin) of a model 16-atom carbon cluster with a manganese atom in a micropore showed that it is energetically favorable for manganese atoms to localize inside the pore and form metal nanoclusters in the carbon micropore. The magnetic moment of an ensemble of atoms surrounding a micropore with one manganese atom in it turned out to be quite large. An experimental method was proposed for introducing manganese clusters into bulk samples of nanoporous carbon with different porous structures, and the effect of these adsorbates on the magnetic properties of the samples was studied. In parallel, X-ray diffraction studies of the samples were carried out. It has been shown that Mn clusters near the surface are rather rapidly oxidized in air, as a result of which peaks associated with oxides predominate in the X-ray diffraction patterns. However, small Mn clusters have also been found. Measurements of the dependence of the magnetization of the samples on the applied field at T=295 K showed the presence of nonlinearity and hysteresis characteristic of superparamagnetism or ferromagnetism. Keywords: micropores, manganese, spin density, magnetization.