bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization and control of gaseous nitriding of a 33CrMoV12-9 steel
Authors: Aggoune Mohammed Salah , Torchane Lazhar
Published: March 2024

This work propose a new experimental methodology to optimize the gaseous nitriding process of 33CrMoV12-9 steel grade, widely used in the mechanical industry for the fabrication of gears, pinions, and bearings. Several nitriding experiments were conducted at a temperature of 520 °C in the interval between 4 and 55 h using both constant and variable nitriding potential K

N
. The obtained results allowed us to determine the optimal conditions and to propose a sequenced cycle consisting of three steps. Multiple characterizations using X-ray diffraction (XRD), optical microscopy (OM), Vickers microhardness testing (HV), and electron probe microanalysis (EPMA) indicate a surface hardness of 810 HV0.5, nitrogen diffusion depth of approximately 0.7 mm. finally, a metallurgical structure devoid of complex networks of nitrides and carbonitrides. The validation results confirmed the effectiveness of the proposed methodology, thereby paving the way for improving the nitriding process in the mechanical industry. This work represents a significant contribution to the optimization of thermochemical treatments for materials used in demanding environments.
A survey of supramolecular association involving the oxide-O atom in the crystals of triorganoamine N-oxide derivatives, RR′R″N(+)O(−)
Authors: Tiekink Edward R. T.
Published: March 2024

Trimethylamine N-oxide, Me3N(+)O(−), is an important molecule in biology and medicine. Herein, a survey of the interactions involving the oxide-O atom in crystals containing derivatives of Me3N(+)O(−), namely RR′R″N(+)O(−), is presented; R,R′, R″ = alkyl and/or aryl. A total of 119 RR′R″N(+)O(−) molecules were analysed for the supramolecular interactions involving the oxide-O atom. Hydrates form the largest class of crystals, comprising over 40 % of the 91 crystals investigated, a value slightly higher than expectation. Over 80 % of molecules had at least one O–H⋯O(−)(oxide) hydrogen bond: 3, 45 and 33 % of all molecules had three, two or one O–H⋯O(−)(oxide) hydrogen bonds, respectively. Further, nearly 15 % of molecules formed at least one N–H⋯O(−)(oxide) hydrogen bond, sometimes operating in concert with O–H⋯O(−)(oxide) hydrogen bonds. The overwhelming majority of molecules featured inter- and/or intra-molecular supporting C–H⋯O(−)(oxide) contacts so that a diverse range of supramolecular interaction patterns is apparent, a situation made more complicated by the appearance of different supramolecular association patterns often observed for independent molecules in crystals with more than one molecule in the crystallographic asymmetric-unit. Of the 6 % of molecules devoid of conventional A–H⋯O(−)(oxide) hydrogen bonds, all formed three or four inter-/intra-molecular C–H⋯O(−)(oxide) contacts usually characterised by at least one short H⋯O(−)(oxide) distance.
Aging, Dying, and the Analytic Process
Authors: Olesker Wendy , Blum Harold , Kernberg Otto , Oppenheim Lois
Published: March 2024

The panel discussion presented at the New York Psychoanalytic Society and Institute's 1066th Scientific Meeting held on June 8, 2023, takes up aging and dying of an analyst and their impact on patients and on the nature of analytic process. Participants reflect on conflicts and challenges arising with more analysts and patients living to an advanced age, on the unregulated nature of analysts’ retirement, and on multilayered meanings of analysts’ ethical commitment to their work.
Must the Reality of Death Be Unspeakable?
Authors: Blair-Neff Tenille , Danielsen E. Francisco , Pierre Grégoire
Published: March 2024

Attention to the manifestations of death anxiety in the clinical context is often absent in the discourse of psychoanalytic training. This exchange addresses some of the causes of such an absence: a fraught relation between privacy and secrecy, primacy of psychic reality and interpretation, and cultural underpinnings of sanitization of death.
tables locales de gestion intégrée des ressources et du territoire : quelle ouverture à la participation locale pour la forêt publique?
Authors: Beaulieu Hanneke , Chiasson Guy , Montpetit Annie , Tchola Sênayi Mireille Blandine
Published: March 2024

Ce texte décrit l’expérience des tables locales de gestion intégrée des ressources et du territoire (TLGIRT), un mécanisme de participation à la gestion des forêts publiques locales au Québec. Notre recherche a comme objectif d’interroger dans quelle mesure ces TLGIRT permettent effectivement de renforcer le pouvoir des acteurs locaux sur la gestion de la forêt publique. Notre étude porte plus précisément sur les dynamiques de participation dans les tables locales de trois régions du Québec : l’Outaouais, les Laurentides et Lanaudière. Par l’entremise d’une série d’entrevues réalisées avec des intervenants de ces TLGIRT, nous avons tracé un portrait nuancé de ces dynamiques de participation. Si, d’une part, le poids des experts (industriels forestiers, représentants du ministère des Ressources naturelles et des Forêts) reste bien présent et vient baliser la participation des autres acteurs, d’autre part, il émerge une construction lente de certains consensus entre les divers acteurs mobilisés par les tables locales.
Enhancing Machining performance in Stainless Steel Machining using MXene Coolant: A Detailed Examination
Authors: Eaki M. , Kadirgama K. , Ramasamy Devarajan , Wan harun Wan Sharuzi , El Hossein Khaled Abou , Samylingam L. , Kok C.K.
Published: March 2024

Metal cutting, a complex process in manufacturing, involves various factors that significantly affect the quality of the final product. Notably, the turning process is crucial, with outcomes that heavily depend on multiple machining parameters. These parameters encompass speed, depth of cut, feed rate, the type of coolant used (specifically, high heat transfer MXene coolant), and insert types, among others. The material of the workpiece is also a critical factor in the metal-cutting operation. This study focuses on achieving optimal surface quality and minimizing cutting forces in the turning process. It recognizes the substantial impact of numerous process parameters, directly or indirectly affecting the product's surface roughness and cutting forces. Understanding these optimal parameters can lower machining costs and improve product quality. Our research concentrates on turning a stainless-steel alloy workpiece using a carbide insert tool. We employ the Response Surface Method (RSM) to optimize cutting parameters within a set range of cutting speed (100, 125, 150 m/min), feed rate (0.1, 0.2, 0.3 mm/rev), and depth of cut (0.4, 0.8, 1.2 mm). Additionally, we use various tool geometries and the RSM design of experiments to enhance and analyze the multi-response parameters of surface roughness and tool life. Optimal machining parameters for MXene-NFC involve a cutting speed of 140 m/min, a feed rate of 0.05 mm/rev, and a depth of cut of 0.5 mm. These settings ensure minimal surface roughness, maximum tool life, and the greatest total length of cut, achieving a composite desirability of 0.695.
Tensile Properties of Isotropic and Anisotropic Magnetorheological Elastomer With and Without Magnetic Field Application
Authors: Ahmad Khairi Muntaz Hana , Garik Leo Jusius , Mazlan Saiful Amri , Mohd Yusuf Shahir Yasin , Johari Mohd Aidy Faizal , Nordin Nur Azmah , Imaduddin Fitrian
Published: March 2024

In this study, two variations of magnetorheological elastomer (MRE) tensile specimens were fabricated, differing in their isotropic and anisotropic configurations. The isotropic MRE exhibited randomly dispersed carbonyl iron particle (CIP), whereas the anisotropic featured longitudinally aligned CIP particles along the gauge length of the tensile sample. The formation of the anisotropic MRE involved utilizing an electromagnetic curing chamber, which facilitated the alignment of CIP particles during the elastomer curing process. A mold was specifically designed to produce samples conforming to the dimensions outlined in ASTMD412-F. Subsequently, a Finite Element Method Magnetics (FEMM) analysis was conducted to examine the magnetic flux within the curing device for the anisotropic MRE. Uniaxial tensile tests were conducted on both MRE types, both in the absence and presence of a 30 mT magnetic field applied transversely to the direction of CIP alignment. Results indicated that without a magnetic field, the anisotropic sample exhibited a slightly higher tensile strength, lower elongation, and higher modulus at 100% strain. However, when a magnetic field was introduced, the isotropic sample demonstrated a more pronounced increase in tensile strength, showing an 18.4% improvement compared to the 5.6% increase observed in the anisotropic sample. Similar trends were observed in the reduction of elongation, with a 14% decrease for isotropic and a 7% decrease for anisotropic samples. Additionally, the data on modulus at a 100% strain revealed a 22.3% increase in stiffness for the isotropic sample, while the anisotropic sample showed a 10.6% increase.
Renewable Energy Sourcing to Enhance Sustainable Manufacturing by Using Madhab’s EEE Impact Analysis Model
Authors: Jena Madhab C. , Mishra Sarat K. , Moharana Himanshu S.
Published: March 2024

The world's increasing energy demand, coupled with the depletion of finite energy resources, necessitates a shift towards sustainable energy solutions. This research explores the multifaceted benefits of substituting conventional fossil fuel-based energy sources with renewable energy in industrial settings, with a focus on sustainable manufacturing. A case study was conducted at a printing and packaging factory in Bhubaneswar, Odisha, to analyze economic, environmental, health, safety, and efficiency factors associated with various energy options based on the Madhab’s EEE (Environmental, Efficiency, Economic) impact analysis method. The study identified solar power generation as the optimal energy source, boasting the lowest EEE impact index of 1.90. Wind energy ranked second, followed by conventional GRID power and DG (Diesel Generator) power sources, which were found to be less favorable due to their higher EEE impact indices. Feasibility assessments revealed that the factory had ample rooftop and vacant land space for solar power plant installation, making it self-sufficient in power generation. The return on investment (ROI) for the solar power project was calculated to be 5.54 years, making it a viable option from a sustainability perspective. Moreover, the solar system could be integrated with the GRID through a reverse metering system, enabling excess energy to be sold back to the GRID. This research underscores the significance of transitioning to renewable energy sources in industries for environmental sustainability, energy security, and economic benefits. It emphasizes the need for similar studies in diverse industrial settings to identify the most suitable energy sources, considering all relevant factors.
Robust Design Applying Taguchi’s Orthogonal Matrices to Determine the Optimal Work Parameters in The Fruit Dehydration Process in A Solar-Gas Hybrid Dehydration Equipment Under Environmental Conditions at 2800 MASL
Authors: Zurita Edison Gustavo Tapia , Zurita Melton Edmundo Tapia
Published: March 2024

In this research work, a prototype dehydrator Solar-gas was designed and manufactured in order to dehydrate tropical fruits under ambient conditions at 2800 MASL.  This equipment requires the development of study of parameter variation to determine the most optimal ones under these altitude conditions to which the Taguchi orthogonal matrices have been applied, varying at two levels the different parameters involved such as temperature, relative humidity, mass of product to be processed, product distribution within the equipment. By using this equation, the best combination of them was determined to achieve an efficient process and adequate dehydration. Validation of effectiveness is carried out by determining the homogeneity of the dehydrated product.
A Hybrid BTC Based Compression Techniques of General Images
Authors: Kamalin C. Jenifer , MuthuLakshmi G.
Published: March 2024

In this paper we propose a new approach for the compression of the general images by combining the Discrete Wavelet Transform (DWT) with Adaptive Block Truncation Coding –Edge Quantization (ABTC- EQ). At the first the standard image is processed by DWT decomposition and into its approximations and details. From this finer and approximation details are separated. The finer details of the image then noted and discarded. The approximate details are noted and further processed in to ABTC-EQ.  This approach i.e combination of DWT with AMBTC-EQ gives a better result than other techniques. The Peak Signal to Noise Ratio (PSNR), Weighted Peak Signal to Noise Ratio (WPSNR), Bit Rate (BR), and Structural SIMilarity Index (SSIM) are among the parametric measurements that are used to evaluate image quality. The comparison analysis demonstrates that the suggested algorithm outperforms both BTC and ABTC-EQ.
Customer Service and Ethics in USA and Lebanon
Authors: Halawi Ali , Zaraket Wael , Fadel Kholoud
Published: March 2024

The purpose of this article is to study both customer service and ethics separately, and then conclude their correlation with personality, particularly the major five personality traits. All the way through there will be contrast made between Lebanon and United States. Literature analysis from diverse researchers on each subject, and expectations discussion of both the Lebanese and American people within each field. The main technique is studying contemporary literature. Resemblances exist among expectations in Lebanon and United States in the subject of customer service and ethics. Moreover, ethics and customer service necessitate specific personality styles where each one is studied. This article aims to understand what excellent customer service and ethics is, then afterwards relating them both to personality, supply managers with ideas on what to look for and suggestions for future testing and research, contribute in the meaning that both Lebanon and United States cultures are examined, which provides insight to a country that Lebanon highly relates to.
Isolated chronic dysphonia revealing a systemic lupus erythematosus: 2 case reports
Authors: Yafi Moahmed , Rochd Sara , Benhoummad Othmane , Lakhdar Youssef , Rochdi Youssef , Raji Abdelaziz
Published: March 2024

Background: Laryngeal involvement in systemic lupus erythematosus may be asymptomatic, and diagnosis may only be made through routine screening or investigation for other symptoms. However, laryngeal involvement can also be potentially serious, with the potential for upper airway obstruction and other complications. Treatment typically involves systemic corticosteroids, which are often effective in managing symptoms. In some cases, more invasive procedures such as tracheotomy or mechanical ventilation may be necessary. Aim: Emphasize the involvement of the larynx in systemic lupus erythematosus and the crucial role of clinicians in recognizing its symptoms to consider a potential diagnosis. Case report: We report two cases of isolated dysphonia revealing systemic lupus erythematosus in two young adult females who had no other clinical signs of systemic lupus erythematosus. Conclusion: Due to the potential seriousness of laryngeal involvement in systemic lupus erythematosus, it is important for clinicians to maintain a high degree of suspicion for this condition in patients with systemic lupus erythematosus, particularly in cases where there are unexplained respiratory or throat symptoms. Early diagnosis and treatment can help prevent potentially life-threatening complications.
«Історія під замовлення» для російської агресії: українська відповідь
Authors: Литвин Володимир Михайлович
Published: March 2024

У статті проаналізовано Указ Президента України В. Зеленського «Про історично заселені українцями території Російської Федерації» і окреслені ним завдання для науковців. Оцінюючи документ як політичну відповідь України, автор показує історичну безпідставність спроб Путіна використовувати «історію під замовлення» з метою обґрунтування дальшого нарощування агресії під приводом захисту території та населення історичної Росії, що фактично зводиться до заперечення права на існування Української держави та її народу, а відтак до викличного нехтування міжнародним правом і, власне, історичною правдою у намаганнях відтворити Російську імперію.
Immunogenicity of Monovalent mRNA-1273 and BNT162b2 Vaccines in Children <5 Years of Age
Authors: Dalapati Trisha , Williams Caitlin A. , Giorgi Elena E. , Hurst Jillian H. , Herbek Savannah , Chen Jui-Lin , Kosman Christina , Rotta Alexandre T. , Turner Nicholas A. , Pulido Natalie , Aquino Jhoanna N. , Pfeiffer Trevor S. , Rodriguez Javier , Fouda Genevieve G. , Permar Sallie R. , Kelly Matthew S.
Published: March 2024

BACKGROUND AND OBJECTIVES

The messenger RNA (mRNA)-based coronavirus disease 2019 vaccines approved for use in children <5 years of age have different antigen doses and administration schedules that could affect vaccine immunogenicity and effectiveness. We sought to compare the strength and breadth of serum binding and neutralizing antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) elicited by monovalent mRNA-based coronavirus disease 2019 vaccines in young children.

METHODS

We conducted a prospective cohort study of children 6 months to 4 years of age who completed primary series vaccination with monovalent mRNA-1273 or BNT162b2 vaccines. Serum was collected 1 month after primary vaccine series completion for the measurement of SARS-CoV-2-specific humoral immune responses, including antibody binding responses to Spike proteins from an ancestral strain (D614G) and major variants of SARS-CoV-2 and antibody neutralizing activity against D614G and Omicron subvariants (BA.1, BA.4/5).

RESULTS

Of 75 participants, 40 (53%) received mRNA-1273 and 35 (47%) received BNT162b2. Children receiving either primary vaccine series developed robust and broad SARS-CoV-2-specific binding and neutralizing antibodies, including to Omicron subvariants. Children with a previous history of SARS-CoV-2 infection developed significantly higher antibody binding responses and neutralization titers to Omicron subvariants, which is consistent with the occurrence of identified infections during the circulation of Omicron subvariants in the region.

CONCLUSIONS

Monovalent mRNA-1273 and BNT162b2 elicited similar antibody responses 1 month after vaccination in young children. In addition, previous infection significantly enhanced the strength of antibody responses to Omicron subvariants. The authors of future studies should evaluate incorporation of these vaccines into the standard childhood immunization schedule.
About the origin of the Ayrums
Authors: Babayev Natig G. , Hadjiyeva Nasiba N. , Yusifova Zumrud M.
Published: March 2024

In more recent times, political problems faced by all-Turkic toponymy did not leave the toponymic system of Azerbaijan out of the grip of these challenges. In scientific journals, symposiums, and conferences, the opinions of our linguists, historians, and geographers regarding the linguistic and etymological analyses of any toponymic unit, turning from scientific debates into personal conflicts and outpourings of dissatisfaction, diverted attention from the correct and fair steps taken by honest researchers in the direction of solving the problem. Regretfully, it can be noted that sometimes, without any reason, the search for the explanation of our onomastic units in the Persian and Armenian languages has been connected with the fact that our territory borders Iran and Armenia. But we should not forget the fact that throughout history, Azerbaijan has bordered the Iravan Khanate, South Azerbaijan, and Türkiye. We must not forget that the population here consists entirely of Turkic tribes. Armenians who occupied our historical homeland not only tried to adopt our native names in those areas but in general, the representatives of this nation have always taken a biased position with the desire to appropriate toponyms of Turkish origin. Their main goal was to falsify the fact that our people live in our homeland, which they have owned for thousands of years, by changing these names. One of the ancient Oghuz tribes, the Ayrums contributed to the origin of the Azerbaijani people. The lack of substantial research on this tribe has led to the creation of fictional ideas about the origin of the Ayrums that have no scientific basis in certain periods. Surely, all this indicates the negative intentions of the Armenians and their allies, who from time to time steal the names of ancient Turkic tribes from our history and create a so-called history for themselves. G. Garagashli, a scientist who conducted serious research on the Ayrums for the first time, clarified many points in his work based on quite valid and logical arguments. G. Garagashli advises his colleagues, who do not agree with his views, to prioritize not only archaeological but also paleontological (linguistic) research in the region inhabited by Ayrums when re-investigating this topic. It is possible to draw confident theoretical conclusions based on thorough research. To preserve its national memory, every nation must first of all have its place names. From this point of view, toponyms are of exceptional importance as an invaluable source for the study of the language, history, geography and ethnography of our people. Our old tribal names, beliefs, and language units live probably better live on oeconym. «Ayrums» is one of the ethno-toponyms that keep our ancestry alive.
Intangible cultural heritage of Ukraine: scientific and practical significance, structure, and development prospects
Authors: Beіdyk Oleksandr O. , Donetc Iryna A. , Arabadji Olena S. , Arsenenko Iryna A.
Published: March 2024

Current objects of UNESCO’s intangible national and world cultural heritage (here-inafter – World Heritage) have been systematized and the list of nominees for the status of objects of intangible cultural heritage (ICH) of Ukraine has been expanded, which is considered as an option for partial compensation in the war and post-war period of resource and recreational losses countries; the fragmentary systematization of objects of ethnocultural tourism is reflected in the map-schematic and tabular elements of the presented material. The creation of a research center for the Azov National Park based on the University of Melitopol (Ukraine) and its joining with European universities studying the National Park of their countries is interpreted as one of the scientific and practical triggers for the protection, preservation, and development of the national network of National Park facilities. It is emphasized that the problem of protecting the World Heritage as a whole and ICH as its component is positioned as one of the key priorities of world, European, and national humanitarian development in the 21st century, and the constructive activities of the world community on the protection of ICH, the effective efforts of UNESCO in legal support of the outlined process are a significant factor in the actualization of state policy regarding the conservation and promotion of traditional crafts, folklore, art, and national cuisine. It is noted that the objects of ethnographic and ethnocultural tourism are a kind of benchmarks and beacons of the resource-recreational «fabric» of any country, which radiate the light of its spirit, national history, and culture. At the same time, in modern times of globalism and ultra-globalism, despite the positive dynamics of the number of identified ethnographic tourism locations, and the increase in the number of objects of intangible heritage, their chances of survival are steadily decreasing. Based on the analysis of the statistics of the recruitment of students for the «Tourism» specialty at the Higher Secondary Education in Kyiv (Ukraine) over the past 10 years, a trend of a constant decrease in demand for this specialty has been revealed.
Assessment of Projected Temperature and Precipitation in the Northern Province of Sri Lanka through Statistically Downscaled CMIP6 Projection
Authors: Nagamuthu Piratheeparajah
Published: March 2024

The issue of climate change has emerged as a paramount concern for the global community, with several nations grappling with the far-reaching effects thereof on their respective territories. Among these nations, Sri Lanka is ranked as the country facing the greatest potential threat. In the Northern Province of Sri Lanka, which has experienced a rebirth after years of internal conflict with the aid of international agencies, projections regarding climate change indicate a diverse array of potential impacts. To arrive at these projections, a comprehensive analysis was conducted, which leveraged downscaled data derived from the Coupled Model Inter-comparison Projects, Phase 6 (CMIP6), obtained via the grid for the Northern Province. Various models were employed to scrutinize this data, and to validate the findings, an analysis was performed by comparing the model-simulated past climate data to observed data. Multimodal ensembles provided insights into unique temperature and precipitation patterns under varying emis- sion scenarios, including the Shared Socioeconomic Pathways (SSP) 4.5 and 8.5, between 2020 and 2100. Under the SSP2 4.5 scenario, for instance, the temperature increase would total 1.13°C, accompanied by 106.19mm of augmented rainfall. By contrast, under the SSP5-8.5 scenario, temperature would increase by 1.81°C, with a projection of 159.6mm increase in rainfall. Moreover, spatially, the future changes in temperature and rainfall for the Northern Province of Sri Lanka display consequential variations. Specifically, the western part is projected to witness higher rates of temperature and rainfall increase than the eastern part. However, it should be noted that variations exist in the values of the projections of temperature and rainfall across the different models. Regardless, the region must brace itself for elevated temperatures, resulting in heatwaves and an augmented frequency of scorching days, indicating an urgent need for policymakers and communities to incorporate these findings when developing and implementing climate adaptation strategies that aim to mitigate climate change’s adverse impact in the area of study.
Photographic narrative as a factor in overcoming witness trauma
Authors: Lysenko Lesia
Published: March 2024

The research aims to explore the multifunctional potential of photography in overcoming the traumatic experience of witnessing violence and brutality. The paper presents how photography can be used in rehabilitation practices for those who have lived through war. It outlines the tendencies of the modern digital information environment (cross-media, interactivity) that enhance the "restorative" functions of photography in overcoming psycho-emotional and socio-cultural crisis reactions.

It has been found that photography’s narrative nature can enhance the viewer’s experience of interacting with their emotions and memories, while also providing a therapeutic effect by mitigating the pain of reflecting on cruelty. The article uses examples of war-related content to demonstrate how storytelling technology can provide a variety of tools for audience participation in the development of collective restorative experiences, particularly through photographic flash mobs.

The structural-functional method was used to work with factual material and identify the role of war photography in the discourse of trauma/post-trauma, clarifying its therapeutic potential. It is well-established that photographs can serve as a means of recording and providing evidence of a crime, facilitating the expression of collective identity and social cohesion. Similarly, the sharing of unprofessional, user-generated visual content on social media can be seen as a form of testimony that elicits strong public reactions. Photography plays a key role in helping people to go through the grieving process by perpetuating and honouring the dead, constructing ‘places of memory’ and ‘portraits of grief’.

The study aims to determine the role of photography in shaping the visual environment, in which the act of ‘seeing’ constructs a system of restorative practices to overcome the negative psycho-emotional consequences of traumatic events provoked by war.
The formation of communicative activities of state authorities in Ukraine in the context of information legislation development
Authors: Baiurko Nataliia
Published: March 2024

The article analyzes the key stages of the formation of communicative activities of state authorities in Ukraine in the context of the development of information legislation. The object of the study is the process of formation and development of communicative activities of state authorities in Ukraine. Based on the analysis of laws and regulatory acts in the field of information legislation, the author proposes an original periodization of the relevant processes in Ukraine: the first stage (1991 — 2000), the second stage (2000 — 2014), the third stage (2014 — 2020), and the fourth stage (from the beginning of 2020 to the present). The main achievements and problems in the field of state communications are highlighted, and generalized recommendations for the further development of Ukraine's state communication policy are presented. State communications in the contemporary context are considered an integral component of state governance and the development of Ukrainian society. The effectiveness of communicative activities in state authorities is discussed in connection with the development of stable social relations, strategic reforms, and access to resources.The importance of implementing information and communication work by central bodies of state power in Ukraine is emphasized in the conditions of full-scale Russian military invasion into our country's territory.The necessity of using modern web resources, various social networks, messengers, interactive chatbots, artificial intelligence, etc., is stressed. It is noted that their active integration into the state's communication policy will significantly increase the efficiency of interaction between government bodies and citizens, thereby contributing to the enhancement of trust and open dialogue between the state and Ukrainian society.The presented conclusions reveal the relevance of maintaining balance in times of crisis and eurointegration efforts through the integration of innovative communication tools.
EPR of LiNaGe4O9:Mn crystal
Authors: Trubitsyn M. P. , Sidak V. M. , Panchenko Т. V. , Volnianskii M. D. , Volynets D. V.
Published: March 2024

EPR spectra of manganese ions were studied in lithium-sodium tetragermanate LiNaGe4O9 crystal. The observed spectrum was typical for doping ions in tetravalent Mn4+ state (3d 3, S=3/2) and for main orientations of static magnetic field along the crystal axes (T=296 K) consisted of hyperfine sextuplet from electronic transition Ms= +1/2 ↔ – 1/2. Transitions Ms= ±3/2 ↔±1/2 were not detected owing to strong interaction of the spin system with crystal field as compared with electron Zeeman interaction in the X frequency range of EPR registration. The angular variations of the spectrum were measured for static field B rotated in three main crystal planes. Since only central transition (Ms= +1/2 ↔ – 1/2) was detected and the splitting of the fine structure remained unknown, the spectrum was described in the approximation of effective spin Seff=1/2. The parameters of the spin Hamiltonian, including electron Zeeman and hyperfine interactions, were calculated. The magnetic multiplicity of the spectrum (km=2) evidenced that paramagnetic centers occupied the sites with monoclinic C2 point symmetry. Taking into consideration the positional symmetry as well ionic charges and radii of the guest ion and the hosts, it was concluded that paramagnetic Mn4+ centers substituted for Ge4+ within oxygen octahedral complexes in the crystal lattice of LiNaGe4O9.
X-ray study of glassy, glass-ceramic, and polycrystalline LiNaGe4O9
Authors: Diachenko A. O. , Skrypnik Ye. V. , Trubitsyn M. P. , Volnianskii M. D. , Baskevich O. S.
Published: March 2024

X-ray diffraction was used to study the phase compositions of lithium tetragermanate LiNaGe4O9 glass and states obtained through its heating and crystallization. LiNaGe4O9 glass was obtained by quenching the melt. The amorphous-crystalline samples were prepared by isothermal heat treating at the temperatures chosen between the glass transition Tg = 783 K and devitrification TC = 829 K points. The polycrystalline samples were obtained by heating the glass well above TC. It was shown that in the glassy samples amorphous phase occupied about 92% of the whole volume, whereas the rest (~8%) fell on regions with ordered structure. In the amorphous-crystalline samples, disordered and ordered regions each occupied about half of the volume. In the polycrystalline samples, ordered regions occupied near 96% of the sample volume. The average size of ordered regions in the glass and amorphous-crystalline samples was estimated about 35 nm. In the polycrystalline samples, crystallites notably grew and had linear size near 120 nm. The obtained data demonstrate that controlled glass crystallization represents an effective way to prepare nanometer size structured solids.
Characterization of synthetic opals filled with copper
Authors: Derhachov M. P. , Moiseienko V. M. , Gorban’ S. V. , Kolisnyk D. V. , Kutseva N. O.
Published: March 2024

Photonic crystals based on synthetic opals filled with copper were produced by using the electrochemical deposition technique. Copper nanocrystal formation together with some quantity of their oxides inside opal pores was proved by the X-ray diffraction pattern. An angular behavior of reflectance maximum for opals with different copper content was satisfactorily described in the framework of theBragg light diffraction model. Effective dielectric constant of the opal-copper structures was determined.
The effect of Ag additives on the structure of Fe-Pt films
Authors: Bashev V. F. , Kushnerov O. I. , Kutseva N. A. , Ryabtsev S. I.
Published: March 2024

Homogeneous thin films of FePt and Fe-(Pt,Ag) were obtained by modernized three-electrode ion-plasma sputtering. The film thickness was 220–450 nm. In this case, the calculated cooling rate reached ~1012–1014 K/s. The structure of films was studied by X-ray diffraction and electron microscopy. It was found that nanocrystalline and amorphous phases were formed in freshly deposited films. It was shown that the resulting metastable structures were stable when heated to 670–890 K, depending on the composition. It was found that Ag additives reduced the coercive force of the films. It was shown that heat treatment increased the coercive force up to 36 kA/m in FePt films and up to 10 kA/m in Fe-(Pt,Ag) films. The conditions for obtaining films with low values of the temperature coefficient of electrical resistance (~1.1∙10-5 K-1) were determined.
Dielectric cylinder discrimination with ANN using phase information of synthesized time-domain response
Authors: Drobakhin O. O. , Chuchva V. D.
Published: March 2024

The application of the three-component stacked artificial neural network (ANN) for discrimination of dielectric cylinders of different diameters using phase information of synthesized time-domain response is considered. The network consists of two sparse autoencoders and the softmax unit. Neural networks are not tied to the frequency range, unlike many well-known methods based on the resonant properties of objects, and they are a powerful tool for object recognition. In contrast to well-known results, information about the phase of the time-domain signal, which is synthesized from multi-frequency data, is used for discrimination. For ANN training, phase images for cylinders with the radius of 15 to 35 mm are obtained using the method of auxiliary sources (MAS) The possibility of successful recognition was confirmed for the case of the diameter deviation of 1 mm and the presence of additive Gaussian noise with SNR of up to 0 dB.
АНАЛІЗ МЕТОДА ГОМОГЕНІЗАЦІЇ ПРИ РОЗРАХУНКУ КОНСТРУКЦІЙЗ ФУНКЦІОНАЛЬНО-ГРАДІЄНТНИХ МАТЕРІАЛІВ
Authors: Дисковський О. А. , Борзов С.О. , Шапка І.В.
Published: March 2024

За допомогою розвинення асимптотичного методу гомогенізації ставиться завдання проаналізувати стаціонарне теплове поле стержня з функціонально-градієнтного матеріалу. Порівняння точного і асимптотичного розв’язків дозволило оцінити точність методу гомогенізації та визначити область його застосування. Встановлено, що на точність методу суттєво впливає величина градієнта функції, що описує зміну геометричних або фізичних параметрів вкраплень неоднорідності. Метод дає задовільні результати тільки для малого градієнтна, у випадках, коли параметри вкраплень мало змінюються по довжині комірки неоднорідності. Точність також залежить від величини неоднорідності – співвідношення фізичних характеристик вкраплень і зв'язувального матеріалу. Врахування першої поправки до усередненого розв’язку дає розв’язок, близький до точного, для будь-якої відносної величини неоднорідності
ОСЕСИМЕТРИЧНІ КОНТАКТНІ ЗАДАЧІ ДЛЯ КРУГОВИХ В ПЛАНІ ШТАМПІВ ЗА НЕЗМІННОЇ ТА ЗМІННОЇ ПЛОЩАДОК КОНТАКТУ
Authors: Дмитрів К.М. , Д`яченко Н.М.
Published: March 2024

Розглянуто осесиметричну задачу про зношування тонкого покриття круговим в плані штампом при його обертанні навколо своєї осі для двох видів штампів: циліндричного і параболоїдного. Для першого площадка контакту є незмінною, для другого – змінною та зростаючою в часі. Систему рівнянь, яка моделює цю задачу, розв’язано покроковим за часом методом у поєднанні з числовим для систем рівнянь на кожному кроці. Проведено аналіз контактних характеристик на стадії припрацювання.
Syncretism and Identity: The Integration of Lutheranism among the Mari People of Bashkortostan, Russia
Authors: Klyashev Alexander , Sadikov Ranus
Published: March 2024

Purpose of the Study: This study explores the intricate process of religious syncretism and identity transformation among the Mari people of Bashkortostan through the integration of Lutheranism into their traditional and Orthodox Christian practices. Methodology: Employing a mixed-methods approach, this research combines qualitative insights from field observations, interviews, and sociological surveys with quantitative data analysis to examine the impact of Lutheranism on the Mari's ethnic identity, cultural adaptation, and social dynamics. Main Findings: The findings reveal that culturally sensitive missionary strategies, including the use of the Mari language and incorporation of ethnic cultural elements into Lutheran worship, have facilitated the acceptance and integration of Lutheranism among the Mari, leading to the formation of a novel religious identity. This identity reflects a dynamic synthesis of traditional Mari beliefs and Lutheranism, embodying the broader phenomena of adaptation and resistance in a globalizing world. Applications of this Study: This study offers insights into the complexity of religious evolution and the role of syncretism in preserving cultural heritage amidst modern challenges. Novelty/Originality of this Study: The study contributes to the discourse on religious syncretism, cultural adaptation, and the resilience of ethnic identities, offering insights into the complexities of religious evolution and the role of syncretism in preserving cultural heritage amidst modern challenges. The research underscores the significance of intercultural dialogue and the adaptability of religious practices, highlighting the potential for mutual enrichment between global religious traditions and local cultural contexts.
The Alligator Lake Throwing Dart, Yukon, Canada
Authors: Thomas Christian D. , Monahan Valery , Alix Claire , Hare P. Gregory , Herkes Jennifer , Smith Holly , Helwig Kate , Poulin Jennifer , Donohoe Misha
Published: March 2024

On August 25th, 2018, the Yukon Ice Patch Research Group recovered a 6,000-year-old segmented throwing dart from site JcUu-11 (Hare et al. 2004) located in the traditional territories of the Carcross/Tagish First Nation and the Kwanlin Dün First Nation, Yukon Canada. The discovery was the result of a dramatic retreat of an ice patch over a period of 23 days. This discovery is the first entirely complete atlatl throwing dart retrieved from an archaeological site in arctic and subarctic North America. Beyond its remarkably state of preservation, the artifact offers insights on material use and artifact design that may have significant implications for archaeological interpretations of First Nations’ hunting traditions.
Introduction
Authors: Dixon E. James
Published: March 2024

Introduction to this issue's selection of exhibition, film and media reviews.
The Archaeological Museum of Alto Adige—Südtiroler Archäologiemuseum of Bolzano/Bozen, Italy
Authors: Nicolis Franco
Published: March 2024

The museum is housed in a historic building constructed in 1912–1913, which was first the headquarters of the Austro-Hungarian Bank, and later, the Bank of Italy. The building was acquired by the autonomous Province of Bolzano in the 1980s, and in 1996 renovations began for its use as the Archaeological Museum of Alto Adige/Südtirol, which was inaugurated on 28 March 1998.
The Hunters of the Alpine Ice
Authors: Rawat Rajiv
Published: March 2024

The Hunters of the Alpine Ice exhibition originated from a research collaboration between territorial archaeologists and the first nation Mountain Dene, or Shúhtagot’ine, of the community of Tulita, in Canada’s Northwest Territories (NWT). The exhibit was part of the public communications component of the NWT Ice Patch Study, which was an International Polar Year (2007–2008) research project.
Intelligent Eye Gaze Localization Method Based on EEG Analysis Using Wearable Headband
Authors: Romaniuk Vladimir , Kashevnik Alexey
Published: March 2024

In the rapidly evolving digital age, human-machine interface technologies are continuously being improved. Traditional methods of computer interaction, such as a mouse and a keyboard, are being supplemented and even replaced by more intuitive methods, including eye-tracking technologies. Conventional eye-tracking methods utilize cameras to monitor the direction of gaze but have their limitations. An alternative and promising approach for eye-tracking involves the use of electroencephalography, a technique for measuring brain activity. Historically, EEG was primarily limited to laboratory conditions. However, mobile and accessible EEG devices are entering the market, offering a more versatile and effective means of recording bioelectric potentials. This paper introduces a gaze localization method using EEG obtained from a mobile EEG recorder in the form of a wearable headband (provided by BrainBit). The study aims to decode neural patterns associated with different gaze directions using advanced machine learning methods, particularly neural networks. Pattern recognition is performed using both ground truth data collected from wearable camera-based eye-tracking glasses and unlabeled data. The results obtained in this research demonstrate a relationship between eye movement and EEG, which can be described and recognized through a predictive model. This integration of mobile EEG technology with eye-tracking methods offers a portable and convenient solution that can be applied in various fields, including medical research and the development of more intuitive computer interfaces.
Information Security Risk Assessment in Industry Information System Based on Fuzzy Set Theory and Artificial Neural Network
Authors: Asfha Amanuel , Vaish Abhishek
Published: March 2024

Information security risk assessment is a crucial component of industrial management techniques that aids in identifying, quantifying, and evaluating risks in comparison to criteria for risk acceptance and organizationally pertinent objectives. Due to its capacity to combine several parameters to determine an overall risk, the traditional fuzzy-rule-based risk assessment technique has been used in numerous industries. The technique has a drawback because it is used in situations where there are several parameters that need to be evaluated, and each parameter is expressed by a different set of linguistic phrases. In this paper, fuzzy set theory and an artificial neural network (ANN) risk prediction model that can solve the issue at hand are provided. Also developed is an algorithm that may change the risk-related factors and the overall risk level from a fuzzy property to a crisp-valued attribute is developed. The system was trained by using twelve samples representing 70%, 15%, and 15% of the dataset for training, testing, and validation, respectively. In addition, a stepwise regression model has also been designed, and its results are compared with the results of ANN. In terms of overall efficiency, the ANN model (R2= 0.99981, RMSE=0.00288, and MSE=0.00001,) performed better, though both models are satisfactory enough. It is concluded that a risk-predicting ANN model can produce accurate results as long as the training data accounts for all conceivable conditions.
Optimization of brine shrimp lethality test for \(\textit{in vivo}\) toxicity evaluation of poisonous plant species collected from Quang Tri province
Authors: Nguyen Chi Mai , Nguyen Tuong Van , Pham Thi Hoe , Vu Huong Giang , Ninh Khac Ban , Linh Trần Mỹ
Published: March 2024

Plants are natural resources providing several important bioactive compounds for human health. To discover such valuable properties, researchers need to focus on both the pharmacology and toxicity of plant materials. Preliminary toxicity assessment of plants using the Brine Shrimp Lethality Test is a convenient, simple, and effective tool. However, some environmental parameters such as light, temperature and salinity need to be optimized for our own laboratory conditions and Artemia salina cysts produced in Vietnam. The obtained results indicated that the continuous lighting regime, temperature of 30 oC and salinity of 30 ppt are the most suitable parameters for cyst hatching within 24 hours and development of nauplii after 24 hours of hatching. Based on the optimal cyst-hatching procedure, the potential toxicity of 26 extracts from 24 poisonous plant species collected in Quang Tri was determined with median lethal concentration (LC50). The results showed that 3/26 extracts were extremely toxic with LC50 ≤ 10 µg/mL; 10/26 extracts were highly toxic with LC50 from 10 µg/mL to 100 µg/mL; 8/26 extracts were moderately toxic with LC50 from 100 µg/mL to 250 µg/mL; 4/26 extracts had low toxicity with LC50 from 250 µg/mL to 1,000 µg/mL; and 1/26 extract was not toxic with LC50 > 1,000 µg/mL. The presented data could provide scientific evidence for further pharmacological and toxicological investigations of these plant species. The optimal conditions for hatching A. salina cysts in this study will be applied in our laboratory for in vivo toxicity assessment of other plant species.
Expression of haemagglutinin-neuraminidase of newcastle virus genotype VIII in insect cell Sf9
Authors: Le Van Truong , Man Hong Phuoc , Dong Van Quyen
Published: March 2024

The hemagglutinin-neuraminidase (HN) protein is the surface glycoprotein of Newcastle disease virus (NDV) which is involved in the process of virus entry into host cells. HN exhibits the capability to induce agglutination of chicken red blood cells, thereby contributing to the viral infection of the host. As a consequence, HN is a potential antigen for the production of subunit vaccines for protecting poultry from NDV infections. In this study, the hn gene coding for the HN antigen of NDV genotype VIII was artificially synthesized, ligated into donor vector pFastBacHT A and integrated into the baculovirus genome for the purpose of HN expression in Spodoptera frugiperda 9 (Sf9) cells. The recombinant HN protein was successfully expressed in Sf9 cells in the SF900 III medium. The expressed recombinant HN protein, with a size of approximately 63 kDa, exhibited hemagglutinin activity (HA) of 4log2 when interacting with chicken erythrocyte fluid. The findings of this study lay the foundation for subsequent research endeavors aimed at the development of Newcastle disease virus (NDV) vaccines tailored for poultry in Vietnam.