bluuebunny/crossref_metadata_2025 huggingface dataset:
Місце виховного простору в освітньо-виховному процесі закладів військової освіти
Authors: Мазуренко Людмила
Published: January 2025

The continuous process of humanization of humanity is becoming even more urgent today. And therefore, the problem of military training of the military personnel of the Armed Forces of Ukraine receives new approaches. The processes of introducing humanism and people-centeredness in the Armed Forces should be carried out using new approaches, including the work of teachers of military education institutions with the aim of achieving high educational standards for the Ukrainian army, which the armies of developed countries also strive to achieve. Accordingly, the task of forming an educational space that will provide the necessary conditions for the professional and versatile education of military personnel, guaranteeing them the comprehensive development of traits, abilities and skills related to the behavioral, speech and communicative culture of the progressive part of humanity has become especially urgent. With the help of the author's approach to the search, we will try to find new means, methods and forms of education, which would help to even more fully endow the Ukrainian serviceman with progressive qualities and traits. Undoubtedly, a modern soldier must be a standard for the state and society he serves, which he swore to protect and on whose behalf he defends the peace, sovereignty and territorial integrity of the state. The topicality of the topic of the article lies in the need to find new approaches to the education of military personnel who would possess traits at the level of the armies of NATO member countries. The purpose of the article is to highlight the latest effective forms, methods and means of conducting the educational process in military education institutions. The author's approaches will be useful and possible for use by teachers of military education institutions and officers. The study will help to understand what should be the favorable conditions for the comprehensive moral-spiritual and cultural-ethical development of a warrior. We covered in detail the innovative concept of "educational space", which aims to constantly develop new methods and approaches of teachers and commanders for effective formation of noble qualities in soldiers. It was proposed to introduce new forms and methods of the educational process.
Методика викладання теми «Локальна та інтегральна теореми Лапласа» на основі інтеграції вищої математики та графічних дисциплін
Authors: Джеджула Олена , Василенко Віталій
Published: January 2025

The article examines the method of forming students' mathematical competence based on the interdisciplinary integration of mathematical and graphic disciplines on the example of studying the topic "Local and integral theorems of Laplace". Graphic and mathematical training of students are organically interconnected. However, the potential of this relationship and the methods of its implementation have not yet been definitively determined. Graphical preparation is extremely important in the study of higher mathematics, because it provides a deeper understanding of complex mathematical concepts and helps students better absorb the material. Mathematical training also plays a key role in mastering engineering graphics, providing a foundation for understanding and creating accurate technical drawings and graphic models, forming in students abstract thinking and readiness to operate with imaginary images based on graphic images.  The article highlights the relationship between higher mathematics and engineering graphics. A method of implementing this relationship is proposed on the example of studying the topic "Local and integral theorem of Laplace", which is based on the gradual complication of examples and relevant illustrative material. 
The proposed author's method of studying Laplace's local and integral theorem is based on the visualization of abstract mathematical concepts, allows a better understanding of changes in distributions and their asymptotic behavior, which is important for understanding the transition from individual values to their integral sum. At the same time, the technique allows you to support an intuitive understanding of the processes of transition from discrete to integral distribution.
V839 Cep – a new quadruple doubly eclipsing system
Authors: Volkov I. M. , Volkova A. S. , Bagaev L. A.
Published: January 2025

New high-precision photometric measurements of the eclipsing star V839 Cep (P = 9.96d, VA+B = 9.64m, e = 0.07, B6 V + B7 V), which is the “A” component of the visual double star J21035+5925AB, have established that component “B” is also an eclipsing variable (P = 4.075d, B9 V + G8 V). For component “A”, the apsidal rotation rate was measured to be ω˙obs=0.027°/year, which exceeds the theoretical value under the condition of synchronism ω˙theor=0.021°/year. The physical parameters of the component stars of the eclipsing pair “A” were obtained: T1 = 13 200 ± 300 K, M1 = (3.7 ± 0.15) M⊙, R1 = (2.57 ± 0.05) R⊙, T2 = 11 900 ± 250 K, M2 = (3.2 ± 0.15) M⊙, R2 = (2.42 ± 0.05) R⊙ and components of the eclipsing pair “B”: T1 = 10 600 ± 200 K, M1 = (2.6 ± 0.2) M⊙, R1 = (1.97 ± 0.05) R⊙, T2 = 5540 ± 50 K, M2 = (0.88 ± 0.05) M⊙, R2 = (0.84 ± 0.05) R⊙. The age of the system is determined to be 70 million years with solar chemical composition. The components of star “A” are pulsating variable stars of the slow β Cephei (SBC) type.
Destruction of open star clusters and the radius-mass relationship
Authors: Tutukov A. V. , Vereshchagin S. V. , Chupina N. V.
Published: January 2025

The processes of formation and six mechanisms of disintegration of open star clusters (OSCs) are considered. Analytical estimates of the rates of OSC disintegration are made for the following mechanisms: loss of the initial gas component of OSCs, mass loss due to supernovae explosions and planetary nebula formation, pair interactions of OSC stars, acceleration of stars by binary systems of OSCs, interaction of OSC stars with stars of the Galactic disk, collisions of OSCs with giant molecular clouds (GMCs) at the front of a spiral wave. The destruction of OSCs is accompanied by the formation of a stellar stream. An analysis of the radius-mass ratio of the OSC core (RM) allowed us to conclude that it probably does not reflect the disintegration mechanism and is a product of observational selection effects. The evolution of an individual OSC in the R-M plane is determined by the initial density and external conditions.
New look at the structure of the nearest circumstellar environment of the weak-line T tauri star V718 Per
Authors: Grinin V. P. , Safonov B. S. , Efimova N. V. , Barsunova O. Yu. , Strachov I. A. , Borman G. A. , Shugarov S. Yu.
Published: January 2025

In this article we analyze the properties of the photometric and spectral variability of the young star V718 Per, a member of the cluster IC 348, in terms of its possible binarity. The most realistic is the model where the main component of the system V718 Per A — with an effective temperature of 5200 K — is periodically shielded by two extended dust periods structures consisting of large particles and moving around the star in resonance with two planets. Their orbital periods are 4.7 years and 213 days. Their ratio with high accuracy is 1:8, and the ratio of the large semi-axes is 1:4. The masses of the planets do not exceed 6 МJup. At the moments of total eclipses of V718 Per A, the radiation of the system is dominated by a colder component with an effective temperature of 4150 ± 100 K, which explains the reddening of the star observed in the brightness minima, as well as its spectral changes during brightness weakening. Speckle interferometric observations performed on the 2.5-m telescope of the CMO of SAI MSU made it possible to estimate the upper limit of the angular distance between the components of the system: 0.1′′, which is equivalent to a projection distance of 30 a.u. The unique feature of this system is that the planes of the planetary orbits practically coincide with the line of sight. Such an orientation of the system is most favorable for measuring fluctuations in the radial velocity of a star caused by the orbital motion of planets, as well as for observing planetary transits along the disk of the main component of the system.
Spectroscopic searches for evolutionary orbital period changes in WR+OB binaries: the case of WR 141
Authors: Shaposhnikov I. A.
Published: January 2025

The results of new low-resolution spectroscopic observations of the short-period system WR 141 (WN5o+O5V–III, P ≈ 21.7d) are presented, as well as the results of their comparison with the material of previous studies in order to search for an evolutionary change in the orbital period. A secular increase in the orbital period of WR 141 with a rate ofР˙=1.6±0.9 sec/year, corresponding to a mass loss rate of M˙WR=(3.1±1.9)×10-5М⊙/yr with the masses of the stars in the system of MWR=39±10Mʘ and MO=37±10Mʘ, is reported. A correlation between the mass loss rate of WR stars and their mass is discussed.
Search for weak components in pulsar radiation
Authors: Smirnova T. V. , Toropov M. O. , Tyul’bashev S. A.
Published: January 2025

The search for weak components outside the main pulse (MP) in the radiation of pulsars at a frequency of 110 MHz observed on the LPA LPI telescope in the Pushchino Multibeam Pulsar Search (PUMPS) has been carried out. The sample included 96 pulsars, for which the signal-to-noise ratio ( S/N) in the main pulse of the average profile during accumulation over 10 years was more than 40. It was found that PSR J1543+0929 has radiation for almost the entire period. The profile is three-component. The relative amplitudes of the lateral weak components are 0.013 and 0.025. For PSR J2234+2114, a precursor was detected that is 53◦ away from the MP.
5-(2-quinolyl)tetrabenzoporphyrin and Its complexes with zinc, cobalt, copper and manganese. Synthesis, spectral, electrochemical and electrocatalytic properties
Authors: Rumyantseva T. A. , Berezina N. M. , Bazanov M. I. , Galanin N. E.
Published: January 2025

By reacting phthalimide with quinaldine in the presence of zinc oxide, 3-(quinolin-2-ylmethylene)isoindolin-1-one was synthesized. Heating its mixture with excess phthalimide and zinc acetate leads to the formation of zinc 5-(2-quinolyl)tetrabenzoporphyrinate, which, when treated with acid, is converted to 5-(2-quinolyl)tetrabenzoporphyrin. The latter, when interacting with cobalt(II), copper(II) and manganese(II) chlorides in DMF, forms the corresponding metal complexes. The composition and structure of the obtained compounds were confirmed by a complex of physicochemical methods of analysis. The results of quantum-chemical calculations of complexes by DFT and TD-DFT methods are presented. The first absorption bands in theoretical electronic spectra are assigned to the corresponding electronic transitions in molecules. All synthesized tetrabenzoporphyrins have catalytic activity in the electroreduction reaction of oxygen; the cobalt complex exhibits the greatest activity.
Formation of alaninate complexes of Fe(II) at various ionic strengths of the solution
Authors: Bobonazarzoda G. B.
Published: January 2025

The complexation in the Fe(0)–Fe(II)–L-Ala–Na(H)ClO4–H2O system was studied at a temperature of 298.15 K and the ionic strength of the Na(H)ClO4 solution I = 0.1–1.0 mol/L (cFe(II) = 1·10–3 and cL = 1·10–2 mol/l) in the range of pH = 1.0–8.2. The constants of complex formation were calculated by the method of successive approximation of theoretical and experimental oxidation functions. Based on the Debye–Huckel theory, the dependence of the constant of complex formation on the ionic strength of the solution was established. It was found that with an increase in the ionic strength of the solution, the values of the constants of formation of the forming coordination compounds decrease.
Amino catalysts in the synthesis of cross-linked silicone diclofenac-containing composites
Authors: Farmazyan Z. M. , Atabekyan M. L. , Akobyan E. A. , Topuzyan V. O. , Arakelova E. R. , Grigoryan S. L. , Grigoryan S. G.
Published: January 2025

Low molecular mono- and diamines (3-aminopropyltriethoxysilane, hexamethylenediamine, 1,4-diaminobutane), and high molecular weight polydimethylsiloxane with terminal amine groups were studied as catalysts in the synthesis of cross-linked composite films based on polydimethylsiloxane with terminal hydroxyl groups, tetraethoxysilane a cross-linking agent and containing sodium diclofenac as a physiologically active compound. Polyethylene glycol PEG200 was used as a hydrophilizing component for the hydrophobic silicone matrix. The chemical structure of amine catalysts and polyethylene glycol presence have significant effect on structure and properties of the composites, thereby determining the kinetics and degree of prolonged release of diclofenac from the films.
Study of the rectification purification process of inorganic acids
Authors: Bessarabov A. M. , Trokhin V. E. , Kazakov A. A.
Published: January 2025

A flexible technology for the production of high purity inorganic acids was developed, including the stages of chemical purification, rectification, desorption, adsorption, absorption, composition correction and microfiltration. It was shown that one of the most important stages of the technology is rectification purification. Quartz and fluoroplastic experimental modules were created, on which studies of the separation coefficient were carried out. Experimental data on the separation factor were obtained using the created distillation unit. Based on the conducted research, the prospects of rectification purification in flexible technology of nitric, chloric, hydrochloric and hydrofluoric acid of high purity were shown.
Moraria (Baikalomoraria) okunevae sp. n. and Moraria (Baikalomoraria) ornofurcata sp. n. (Copepoda, Harpacticoida, Canthocamptidae) from Lake Baikal
Authors: Alekseeva T. M.
Published: January 2025

During the study of coastal harpacticoid communities of Lake Baikal, representatives of two new species were discovered: Moraria (Baikalomoraria) okunevae sp. n. and Moraria (Baikalomoraria) ornofurcata sp. n. Morphologically, both new species are similar to Moraria (Baikalomoraria) spinulosa Borutzky et Okuneva 1972, but differ well in the structure of the caudal rami. The morphology of these species was studied using scanning electron microscopy. An illustrated description is provided, and variability characterized.
The female reproductive system of the genus Hololepta (Coleoptera, Histeridae, Histerinae, Hololeptini) and its significance for the systematics of the group
Authors: Bichevoy V. V.
Published: January 2025

Most species of the genus Hololepta show flat bodies and atypical ovipositor structures, these latter being adapted to laying the eggs inside wood. Cladistic analyses based on 33 characters of the adult insect body and 15 characters of the ovipositor support the monophyly of the genus. The subgenus Hololepta has more apomorphic characters than does Leionota. This study did not reveal any characters that show the monophyly of Leionota. In most species of the subgenus Hololepta the gonocoxites bear teeth that help pushing out the substrate during oviposition. The valvifers in most Hololepta species have longitudinal thickenings to further increase their strength. Our data show that the characters of the ovipositor are lower in value for phylogenetic reconstructions. The reproductive system of female Hololepta is more prone to convergences and parallelisms compared to the features of their external structure.
Cold hardiness and overwintering conditions of larvae of the Siberian moth, Dendrolimus sibiricus (Lepidoptera, Lasiocampidae) from Central Yakutia’s population
Authors: Bulakhova N. A. , Meshcheryakova E. N. , Burnasheva A. P. , Ermakova Yu. V. , Vinokurov N. N. , Berman D. I.
Published: January 2025

The Siberian moth, Dendrolimus sibiricus Tschetverikov 1908, is a dangerous pest of the conifer family Pinaceae that inhabits the Asian part of Russia, northern Kazakhstan, Mongolia, China and the Korean Peninsula. Its range is gradually expanding both westwards and northwards: the species is currently recorded at 46°–47° E over the Eastern European Plain, around 60° N in the Krasnoyarsk Krai and at 63° N in the Republic of Sakha (Yakutia). A number of studies have been devoted to predicting further dispersal of D. sibiricus, but the assessment of the pest’s invasion potential is hampered, among other things, by insufficient information on the requirements of the overwintering stage (larvae) to winter conditions. We evaluated the main features of pest biology, determined the cold hardiness of its larvae, and revealed the temperature conditions in the wintering places at the northeastern limit of its distribution in Central Yakutia. The average supercooling point of larvae was –18.5 ± 0.4°C, being significantly different (p ≤ 0.05) between individuals of younger (II–III and III–IV) and older (IV–IV) instars: –20.0 ± 0.6 and –18.8 ± 0.8°C, vs –16.7 ± 0.8°C, respectively. A prolonged (2 days) stay at –15.5°C leads to death of 53% individuals, 63% mortality at –17.5°C and already 91% at –20°C. Comparing larval cold hardiness and the temperatures in hibernation horizons in one of the coldest regions within the natural range of the pest shows suitability of large areas of Yakutia for D. sibiricus survival, especially currently due to climate warming.
Synthesis of gallium (II) sulfide
Authors: Borisenko D. N.
Published: January 2025

The synthesis of gallium (II) sulfide was carried out from elements in a closed volume using a two-temperature method. Passivation of the gallium surface in vacuum is observed up to temperature of 1623 К. The controlled chemical reaction was carried out in a hydrogen atmosphere at a pressure of 1300–2600 Pa. Similar results were achieved in vacuum using photocatalysis with ultraviolet radiation at a wavelength of 240–320 nm with a radiant power of 24.6 W. In both cases, at the temperature of 1323–1373 К, the gallium (II) sulfide synthesis time took no more than 30 minutes with a loading mass of 100 g. The Rietveld method was used to characterize crystalline gallium (II) sulfide by powder X-ray diffraction. The results of analysis showed that the product of the chemical reaction is single-phase GaS. The proposed solution to the problem of the gallium melt surface passivation for sulfur oligomers from the point of view of quantum electrodynamics made it possible to significantly reduce energy costs and increase the synthesis efficiency of extra pure gallium (II) sulfide for its further use in the chalcogenide glasses production.
Synthesis of hydride phases based on TiZrNbMoTa high-entropy alloy
Authors: Lushnikov S. A. , Filippova T. V.
Published: January 2025

A high-entropy TiZrNbMoTa alloy with a body-centered cubic lattice has been synthesized. The interaction of the alloy with hydrogen is accompanied by the formation of samples containing hydride phases with tetragonal and cubic lattice. Hydrogen desorption from the hydride at high temperature leads to the formation of fine metal powder of the original alloy with a cubic lattice. Samples of the alloy and hydride phases were analyzed by X-ray diffraction and electron microscopy.
Structure, stacking faults and electrochemical behavior of α-Ta prepared by chemical vapor deposition
Authors: Lubnin A. N. , Lad’yanov V. I. , Pushkarev B. E. , Sapegina I. V. , Faizullin R. R. , Baldaev L. Kh. , Treschev S. Yu.
Published: January 2025

Using X-ray diffraction, scanning electron microscopy, glow discharge emission spectroscopy, electrochemistry and strength assessment, stacking faults in tantalum deposited in a helium environment on a copper substrate by chemical vapor deposition and their effect on the protective properties have been studied. It is shown that the probability of formation of stacking faults in deposited bcc tantalum in the {112} planes is a sensitive parameter with respect to the deposition conditions (temperature and helium content). With an increase in helium concentration from high to medium values, the sum of the probabilities of the formation of deformation (α) and twinning (β) stacking faults 1.5α + β in α-Ta increases five times (from 0.025 to 0.13%), with a decrease in temperature from 800 to 750°C — 35 times (from 0.025 to 0.89%). A decrease in the probability of formation of stacking defects in deposited α-Ta tantalum is associated with a significant increase in corrosion resistance and adhesion strength of the coating to the substrate. A mechanism for the formation of metastable hcp phases of tantalum on stacking faults in α-Ta in the {112} planes is proposed.
Evaluation of the component composition and thickness of the modified layer of tungsten and tantalum carbides during stationary sputtering by helium ions bombardment
Authors: Manukhin V. V.
Published: January 2025

A method is proposed for calculating the component composition and thickness of a layer of two-component targets changed as a result of prolonged (stoichiometric) sputtering when irradiated with light ions. The method is based on a previously tested model of sputtering inhomogeneous two-component materials with light ions. In the case of stationary sputtering of tungsten and tantalum carbides with helium ions, the results of calculations of the component composition and thickness of the modified layer are presented in comparison with experimental data.
Microstructure and deformation behavior of novel metal–ceramic laminated composites Ta/Ti3Al(Si)C2–TiC
Authors: Abdulmenova A. V. , Kashkarov E. B. , Krotkevich D. G. , Travitzky N.
Published: January 2025

New metal–ceramic laminated composites Ta/Ti3Al(Si)C2–TiC were obtained by spark plasma sintering. The samples were synthesized at a temperature of 1250°C and a pressure of 50 MPa for 5 min. For the formation of composites, preceramic paper with a powder filler based on the MAX phase Ti3Al(Si)C2, as well as and metal foils made of tantalum, were used. The phase composition, microstructure and elemental composition were analyzed by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy, respectively. It was found that as a result of sintering, dense multilayer composites were formed, consisting of tantalum metal layers, ceramic layers containing Ti3Al(Si)C2, TiC and Al2O3 phases, as well as reaction layers ~13 μm thick at the metal–ceramic interface, enriched with Ta, Al and Si. Based on mechanical test data, the ultimate bending strength of the obtained composites was determined (σbs = ~430 MPa). Metal–ceramic laminated composites with a refractory tantalum layer were shown to exhibit a ductile fracture mechanism, accompanied by a more than fourfold increase in absolute deformation compared to a Ti3Al(Si)C2-based ceramic composite. This is achieved due to deflection, branching of cracks at the metal–ceramic interface and plastic deformation of tantalum layers.
Dual Energy CT Imaging of Hepatocellular Carcinoma Using Lipiodol in Intermediate-Stage Chemotherapy Treatment
Authors:   Mohawk Valley Health System, 111 Hospital drive, Utica, New York 13502, United States, Aye Soe Lwin , Mamarajabov Sobirjon ,   Samarkand State Medical University, 18 Amir Temur Street, Samarkand, Uzbekistan, Singh V. R. ,   PDM University, India, Lee Hwunjae ,   Department of Radiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
Published: January 2025

Hepatocellular carcinoma (HCC) is the
most prevalent form of primary liver cancer, with
transarterial chemoembolization (TACE) being a
standard treatment for intermediate-stage disease.
During TACE, Lipiodol, an iodine-based contrast
agent, serves as both a drug carrier and an imaging
agent. However, residual Lipiodol can create artifacts
on follow-up imaging, potentially mimicking tumor
enhancement and complicating diagnostic
interpretations.This study investigates the role of dual-energy
computed tomography (DECT) in differentiating
between Lipiodol-induced artifacts and true tumor
enhancement during post-TACE surveillance of HCC.
We present a case of a 62-year-old female patient
with HCC who underwent TACE, followed by DECT
imaging for monitoring. DECT imaging revealed a
lesion in the liver that appeared to enhance in the
arterial phase, raising concerns for tumor recurrence.
However, virtual non-contrast (VNC) imaging
showed no enhancement, and the iodine map
confirmed the presence of residual Lipiodol, rather
than active malignancy. This case illustrates the
diagnostic challenge of distinguishing between
Lipiodol and tumor lesions, particularly when
residual Lipiodol mimics tumor enhancement. DECT
was critical in identifying residual Lipiodol and
distinguishing it from true tumor recurrence. This
study highlights the utility of DECT in enhancing
diagnostic accuracy for patients undergoing TACE,
minimizing unnecessary interventions, and ensuring
appropriate follow-up care. By providing detailed
tissue characterization and iodine mapping, DECT
improves differentiation between artifacts and
pathological findings in post-treatment liver imaging,
ultimately contributing to better patient management
and outcomes.
A case study of pancreatic cystadenomas in an old woman
Authors:   Department of Internal Medicine, Samarkand State Medical University, 18 Amir Temur Street, Samarkand, Uzbekistan, Park Guppeum , Aye Soe Lwin ,   Mohawk Valley Health System, 111 Hospital drive, Utica, New York 13502, United State, Mamarajabov Sobirjon ,   International Department, Samarkand State Medical University, 18 Amir Temur Street, Samarkand, Uzbekistan, Lee Hwunjae ,   Interdisciplinary Program of Biomedical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
Published: January 2025

Serous cystadenoma of the pancreas is a
rare, benign neoplasm that is often discovered
incidentally during imaging studies for unrelated health
concerns. These tumors are typically asymptomatic and
characterized by multiple small cysts filled with clear
serous fluid. Despite their benign nature, accurate
diagnosis is crucial to distinguish them from other
pancreatic cystic lesions, particularly those with
malignant potential, such as mucinous cystadenomas,
pseudocysts, and intraductal papillary mucinous
neoplasms (IPMN). This report presents a case of a 67-
year-old female who was referred for further evaluation
of a pancreatic mass identified incidentally on a routine
CT scan. The patient was asymptomatic, with no gastrointestinal
symptoms, and had a medical history significant for
controlled hypertension and diabetes. A contrastenhanced MRI confirmed a well-defined, multicystic
lesion in the head of the pancreas, exhibiting typical
imaging features of serous cystadenoma, including a
"honeycomb" appearance without evidence of ductal
dilation or surrounding tissue invasion. A
comprehensive diagnostic approach, including imaging
findings and laboratory results, led to the diagnosis of a
serous cystadenoma. While these tumors are noninvasive and rarely cause symptoms, it is important to
monitor them over time to ensure no change in size or
behavior. This report also reviews the epidemiology,
pathophysiology, clinical presentation, and management
strategies for serous cystadenomas. The prognosis for
patients with serous cystadenomas is excellent, with low
risk of malignant transformation and recurrence
following surgical removal. Regular follow-up imaging
is typically recommended for monitoring.
ON THE ACCURACY OF TRUNCATED EXPANSIONS
AT THE CRACK TIP IN ANISOTROPIC MATERIALS
Authors: Stepanova L.V. , Fomchenkova M.A.
Published: January 2025

Asymptotic expansions generalizing the representation of M. Williams are widely used to represent mechanical fields near the tip of cracks in plane anisotropic elastic media. For practical applications, asymptotic solutions in the form of formal infinite series should be truncated, and there is a full understanding that higher accuracy can be achieved by preserving more terms in the series. The effect of truncation on accuracy can be quantified by comparing truncated solutions with exact analytical solutions (closed-form solutions) that exist for some crack configurations. The computation of two-dimensional absolute error fields reveals amazing patterns in which points with numerically zero error appear, which implies the existence of areas where truncated series can give accurate results. These points of precision converge on curves radiating from the crack tips and directed to the outside of the circles of convergence of the series. The paper also proposes and improves a numerical method for reconstructing the coefficients of the stress field series, strains and displacements near the tip of a defect in linearly elastic anisotropic (orthotropic) materials. The proposed substantially over-deterministic method is based on finite element (FE) analysis to determine the coefficients of series near the crack tip in anisotropic media. With the help of the obtained finite element stress field, a significantly over-deterministic system of algebraic equations is formed in the nodes of the finite element grid with respect to the coefficients of asymptotic field expansions. Numerical examples of cracks in finite and infinite plates are investigated, where the results of the proposed approach demonstrate good agreement with exact or alternative numerical solutions. A convergence study of the methodology is being conducted to verify the reliability of the methodology and the reliability of the results. The corresponding error in the approximation of the stress field is calculated. Low error values demonstrate the high accuracy of the developed method.
INSTABILITY PROCESSES IN PLASTICALLY DEFORMABLE ALLOYS
Authors: Sarafanov G.F.
Published: January 2025

The spatial-wave dynamics of the Portevin–Le Chatelier effect in crystalline alloys is studied on the basis of the proposed model. The model is a system of integro-differential equations for external stress, dislocation velocity, plastic deformation velocity, as well as the Gilman–Johnston equation specifying the deformation mode. Dislocation density is taken into account as a monotonously increasing parameter leading to hardening. As a result of numerical study of the model, it was found that there are a number of dimensionless parameters that significantly affect the effect of discontinuous deformation. First of all, these are the parameters , u0 and A. The parameter  which characterizes the effective dislocation mass, is extremely small, as a result of which the load fluctuations in the system are purely relaxation in nature; the parameter u0, proportional to a given rate of plastic deformation, determines the boundaries of the instability region; The correlation parameter A, along with the value of u0 (in the instability region), affects the variety of spatial wave solutions. At low values of the parameter A < Ac, a regular homogeneous mode is implemented in the system, there is no localization of deformation. With an increase in A > Ac, the process of plastic deformation becomes irregular. Two cases are considered for u0 = 1 and u0 = 2. In both cases, the deforming stress has a pronounced character of abrupt deformation, and the rate of plastic deformation has the shape of pulses that form regular Portevin–Le Chatelier bands in time and space. These bands symmetrically originate at opposite grips and spread at a certain speed to the opposite end (in the second case at a higher speed), after which the process is repeated. It is shown that the total deformation rate u(t), integrated along the entire length of the crystal and associated with the rate of stretching of the sample, strongly correlates with load surges – each pointed spike u(t) corresponds to a drop in external stress on the deformation curve.
DETERMINATION OF THE UPPER LIMIT OF THE LOAD-LOADING CAPACITY
OF BENDING REINFORCED METAL-COMPOSITE RING PLATES IN CONTACT WITH A LIQUID INCOMPRESSIBLE MEDIUM.
2. ANALYSIS OF CALCULATION RESULTS
Authors: Yankovskii A.P.
Published: January 2025

For homogeneous isotropic annular plates with a rigid insert resting on an incompressible liquid base, a comparison was made of the solutions obtained analytically by Hodge and the numerical method previously developed by the author. Specific examples demonstrate the convergence of the numerical solution and its good agreement with the complete exact solution. In this case, the accuracy of determining the limit value of the transversal load applied to the rigid insert is 1-2%. It is shown that the numerical solution is not complete, since it allows one to calculate only the limiting value of the external active load applied to the bending plate, but does not allow one to determine the magnitude of the fluid resistance in the limit state of the structure. The influence of plate reinforcement parameters on the limiting value of the transverse force applied to a rigid insert is analyzed. Options for laying reinforcement along logarithmic spirals, along rectilinear trajectories and along radial and/or circumferential trajectories have been studied. It is shown that plates with a radial-circumferential structure have the greatest load-bearing capacity when at each point the total reinforcement density is equal to the maximum permissible value. For the first time, an unconventional version of the boundary conditions on the outer edge of the plate, which exploit under the specified conditions, is considered - the free edge. It has been demonstrated that in the case of the design of the product, when in the limit state of the plate it is impossible for liquid to flow from one of its front surfaces to another, the load-bearing capacity of a plate with a free outer edge is several times less than with a supported outer edge. The possibility of the emergence of an absolutely rigid annular subregion adjacent to the internal insert in the limit state of reinforced plates is shown.
REFINED TRANSFORMATION MODEL OF DEFORMATION
OF A ROD-STRIP FIXED ON A DOUBLE-SIDED SUPPORT ELEMENT
THROUGH ELASTIC INTERLAYERS.
1. BASIC RELATIONS AND MOTION EQUATIONS
Authors: Paimushin V.N. , Shishkin V.M.
Published: January 2025

It is noted that when studying the deformation processes of flat rods taking into account the deformability of clamped sections, it is necessary to introduce the transformational concept of the stress-strain state parameters and the mathematical models used to describe them. Such a transformation takes place when passing through the boundary from free section to a clamped one (from clamped to free). A refined transformation model of the dynamic deformation of a rod consisting of clamped and free sections along its length is constructed. The clamped section of finite length is considered to be connected along two front surfaces with an absolutely rigid and fixed support element through elastic transversely soft interlayers. To represent the displacements of the clamped and free sections of the rod, as well as the elastic interlayers, approximations according to the S.P. Timoshenko's shear model taking into account their transverse compression is accepted. They subject to the conditions of continuity of displacements at the points of connection of the layers with the clamped section of the rod and immobility of the points of contact of the layers with the support element. On the basis of this shear model, the components of the deformed state are obtained in the geometrically linear approximation and the corresponding stress components in the physically linear-elastic approximation, as well as variations in the potential energy of deformation and the work of inertial forces for the clamped and free sections of the rod. The conditions of kinematic conjugation of the noted sections of the rod are formulated. Taking into account these conditions, based on the of d'Alembert–Lagrange's variational principle, the corresponding equations of motion and boundary conditions for them, as well as the force conditions for conjugation of the clamped and free sections of the rod are obtained for the sections introduced into consideration.
DIRECT PHYSICS-BASED MODEL OF ELASTOVISCOPLASTICITY:
APPLICATION TO THE STUDY OF FREE SURFACE EFFECTS
ON INELASTIC DEFORMATION OF SINGLE CRYSTAL SAMPLESS
Authors: Viatkin I.V. , Trusov P.V.
Published: January 2025

The article provides a rationale for the relevance of a detailed study of the influence of free surfaces of samples on the results of mechanical tests (scale factors), based on the analysis of physical mechanisms of inelastic deformation, due to the increasingly widespread use of miniature products. The proposed paper is devoted to the construction of a direct model of elasto-viscoplasticity for describing the behavior of meso-scale crystallites and its application to the analysis of the effect of a free surface on the physicomechanical properties of mono- and polycrystalline materials/structures made of metals and alloys. A basic model of a crystallite is described on the basis of physical theories of plasticity, where inelastic deformation mechanisms and their carriers are explicitly considered. A face-centered crystal is considered, where plastic shear can be realized by 12 available dislocation slip systems. The model uses the law of nonlinear hardening with saturation and the lattice spin submodel. A variant of the relations describing the decrease of critical tangential stresses in sliding systems near the free boundary is proposed. A series of numerical experiments have been carried out to solve initial boundary value problems in the study of the deformation of single crystal specimens. The results showed a significant effect of the sample size on the mechanical response during inelastic deformation. A decrease in the characteristic values of the yield strength and flow stress of the sample with a decrease in its size is demonstrated.
EXPLORING THE RELATIONSHIPS BETWEEN PSYCHOLOGICAL CHANGES, SLEEP QUALITY, AND HYPERTENSION AMONG COMMUNITY-DWELLING ELDERLY
Authors: Natashia Dhea , Rahma Pricelia Alifa , Fitria Dian , Syamsir Syamikar Baridwan , Irawati Diana
Published: January 2025

Objective: to examine the relationship between psychological changes and sleep quality with the incidence of hypertension in the elderly.Method: This cross-sectional study, conducted with a purposive sample of 126 elderly participants, assessed psychological changes using the Depression, Anxiety, and Stress Scale (DASS-42) questionnaire and sleep quality using the Pittsburgh Sleep Quality Index (PSQI) questionnaire. Blood pressure was measured using a sphygmomanometer to assess hypertension. Data analysis included independent t-tests and chi-square tests, with logistic regression used to identify predictors of hypertension. Results: The independent t-test revealed significant differences in stress levels between participants with and without hypertension (t = -6.614, p = 0.020). Similarly, significant differences in depression levels were observed between these two groups (t = -0.044, p = 0.014). Elderly individuals with poor sleep quality had a 5 times higher risk of experiencing hypertension (OR = 4.625, p = 0.008). Multivariate analysis indicated that age was a predictor of hypertension incidence (β = 0.208, p = 0.004), and sleep quality was also a predictor (β = -1.501, p = 0.023). Discussion: The findings suggest that psychological factors and sleep quality influence hypertension development in the elderly, likely through physiological mechanisms such as heightened sympathetic activity and vascular stress. These results highlight the importance of addressing both psychological health and sleep quality in managing hypertension risk. Conclusion: Sleep quality is a predictor of hypertension incidence in the elderly. Those with poor sleep quality have a 5 times greater risk of developing hypertension compared to those with good sleep quality. Keywords: elderly, hypertension, psychological changes, sleep quality
Интертекстуальные параллели в поэзии Бахыта Каирбекова
Authors: Абдрахманова Э.А. , Тахан С.Ш.
Published: January 2025

В статье предприняты попытки исследовать интертекстуальные параллели между поэзией Бахыта Каирбекова и японских поэтов Басё и Такубоку. Проведенный интертекстуальный анализ позволил выявить наличие межтекстовых связей, определить сходство тем, мотивов и образов. Интертекстуальные ссылки обогащают смысл лирических произведений и обеспечивают более глубокое понимание намерений и мысли писателей. Художественный контекст поэтических произведений авторов разных культур и эпох пересекается, придавая широту и глобальность поднимаемым социокультурным вопросам и философской мысли. Семиотическая структура поэтики Б. Каирбекова и японских авторов выступает как особый механизм передачи информации об окружающем мире, традиционной культуре, обычаях, сплетении национальных символов, языка и мышления. Вместе с тем, существующие межтекстовые связи и параллели между поэтическими произведениями Каирбекова, Басё и Такубоку вовсе не отменяют заслуженного права каждого из поэтов на свой индивидуальный стиль, неповторимость поэтического почерка. Благодаря проведенному анализу мы надеемся получить более глубокое понимание того, как поэзия может преодолевать культурные и языковые границы, интерпретировать национальные и общечеловеческие проблемы в контексте межкультурной коммуникации.
Төлен Әбдікұлының «Тұғыр мен ғұмыр» хикаятындағы автор мен нарратор бірлігі
Authors: Айтуғанова С.Ш. , Жорашова А.М.
Published: January 2025

Мақалада қазіргі қазақ прозасының классик жазушыларының бірі Т. Әбдікұлының «Тұғыр мен ғұмыр» хикаятындағы автор мен нарратор тұтастығы жөнінде сөз етіліп, саралау жұмыстары жүргізілді. Қазіргі әдебиеттану ғылымында автор мен нарратторды бір-бірінен бөлек алып қарастыру тенденциясы бар. Оның негізі постструктуралист ғалымдардың тұжырымдарында жатқандығы мәлім. Алайда қанша өнер иесін өз туындысынан бөліп алсақ та, шығармашылық үрдісте автор бейсаналы түрде өз болмысын, образын оқырман санасында қалыптастыратыны анық. ХХ ғасыр басында туындаған автор теориясының  әдебиеттану ғылымында маңыздылығы жоғары. Қазіргі қазақ прозасындағы автор мен нарратор тұтастығы туралы зерттеу жұмыстарын жүргізудің өзектілігі бар. Сондықтан да осы мәселені негізгі мақсат етіп, тәуелсіздік жылдарынан кейінгі қазақ прозасындағы айтулы, классикалық шығармаларды нарратологиялық призмадан зерделеп, автор теориясының парадигмалық шеңберін зерттеуді нысан еттік. Зерттеу жұмысында Р.Барт, М.Фуко, В.Шмид, П.Доусон,  сынды ғалымдардың  автор теориясына қатысты ғылыми тұжырымдары мен отандық ғалым Т.У.Есембековтың авторлық баяндауға байланысты жасаған ғылыми тұжырымын негізге алдық. Көркем мәтінді зерттеу барысында шығармаға семиотикалық талдау жасай отырып жазушы стилін айқындап, кейіпкер образын даралауда авторлық хабарға (посыл) ерекше мән бердік. Автор өзін қаншалықты шығармадан алшақ ұстап нарраторға үлкен жауапкершілік жүктесе де, өзінің бар екендігін білдіретіні анық.
Парсы-түркі халықтары фольклорлық дәстүріндегі типологиялық ұқсастықтар
Authors: Сағымжанова Т.Б. , Сағындық Н.Б.
Published: January 2025

Мақалададәуірлер сабақтастығында болып жатқан рухани үйлесімділік сипатталады.Заманымыздың өзекті мәселесі – фольклордағы түркі дүниетанымы мен қазақ халқының ұстанымдарының орны мен бағасын анықтау.Түркі халықтарының мол байлығының жиынтығы саналатын қисса-дастандар, ғашықтық жырлар, батырлар жыры және т.б. әлемдік өркениетте де ерекше сипатқа ие.Олардың тарихи, құрылымдықтабиғатынзерттеубарысында ғалымдар фольклорлық дәстүрлердің сабақтастығына, типологиялық ұқсастығына назар аудара бастады.Мақалада Шығыс ғашықтық жырларының Алтын Орда-қыпшақ дәуірінде түркі әдебиетіне келу үдерісіндегі өзгеріс-ұқсастықтарының типологиялық сипаты егжей-тегжейлі қарастырылады.
Зерттеу мақаланың негізгі бөлімінде парсы-түркі халықтары фольклорлық дәстүріндегі ортақ діңгек анықталады. Фольклорлық дәстүр жеке өз алдына жанр болып, халықтың рухани байлығының бастауына айналғандығы айқындалады. Авторлардың көзқарасындағы дін мен мәдениеттің берілу формаларының қаншалық шеберлікке сүйенгендігі байқалады. Қос өркениетті қоғамның арасындағы «алтын көпір» бола білген шығармалардың адамзат өміріне әкелген жаңалықтары мен пайдасының ұшан-теңіздігі көрініс табады. Бірқатар зерттеушілердің пікірлері жинақталып, оған қосымша түсініктеме беріледі. Әлем деңгейіндегі ғылымның зерттеу нысанына айналған көркемдік шынайылық пен фольклорлық дәстүр арасындағы өзара байланыстың қаншалықты нығыз орныққанына қорытынды бөлім арқылы нақты тұжырымдама береді.
The phenomenon of discrimination in Israeli society
Authors: Admasu Aleligne
Published: January 2025

In this paper, I will try to examine the situation of the phenomenon of discrimination regarding the situation of ethnic population groups, Jews and Arabs, women and men, veterans and immigrants, and others who suffer from the intersection of the social structure of Israeli society which causes discriminatory phenomena on the background of the affiliation of population groups in Israeli society since Israel was established from 1948 until today. We can say that the phenomenon of discrimination started from the principle of defining the State of Israel as the nation-state of the Jewish people, the Land of Israel is the historical homeland of the Jewish people, where the people exercise their natural, cultural, religious, and historical right to self-determination. The Israeli government defined the State of Israel as a “Jewish State,” the nation-state of the Jewish people with clear democratic characteristics from 1948 until the period of 1992.
Financial Resilience: Strategies for Building a Strong Money Foundation
Authors: Apriyanti Nike , Harisriwijayanti Harisriwijayanti , Bella Shinta
Published: January 2025

ABSTRACT
This study investigates the dynamics of financial resilience among customers of Bank Syariah Indonesia, focusing on the roles of financial planning, saving behavior, and financial literacy. Using a quantitative approach with a sample of 80 bank customers selected via random sampling, the research employs SmartPLS for path analysis to assess direct and indirect effects. Findings reveal that financial planning significantly enhances both financial literacy and financial resilience, underscoring its pivotal role in promoting financial stability. However, saving behavior shows a non-significant direct impact on financial literacy and a marginally significant effect on financial resilience. Importantly, financial literacy mediates the relationship between financial planning and financial resilience, emphasizing its critical influence on customers' financial resilience. These results highlight the importance of tailored financial education initiatives and strategic planning interventions in enhancing financial literacy and resilience within Islamic banking contexts.
Boosting Sales through WhatsApp Business and Service Quality: The Mediating Role of Customer Satisfaction at CV. Bhakti Jaya Indonusa (BJI Advertising)
Authors: Sujaya Indra , Elfiswandi Elfiswandi , Lusiana Lusiana
Published: January 2025

This study aims to determine the Increase in Sales: Whatsapp Business and Service Quality with Customer Satisfaction as an Intervening Variable at CV. Bhakti Jaya Indonusa (BJI Advertising). The method used is multiple linear regression analysis and path analysis, with a sample of 100. The results of the study show a significant effect of whatsapp business on customer satisfaction at CV. Bhakti Jaya Indonusa (BJI Advertising). There is a significant effect of service quality on customer satisfaction at CV. Bhakti Jaya Indonusa (BJI Advertising). There is a significant effect of whatsapp business on increasing sales at CV. Bhakti Jaya Indonusa (BJI Advertising). There is a significant effect of service quality on increasing sales at CV. Bhakti Jaya Indonusa (BJI Advertising). There is a significant effect of customer satisfaction on increasing sales at CV. Bhakti Jaya Indonusa (BJI Advertising). Customer satisfaction is able to mediate the effect of whatsapp business on increasing sales at CV. Bhakti Jaya Indonusa (BJI Advertising). Customer satisfaction is able to mediate the effect of service quality on increasing sales at CV. Bhakti Jaya Indonusa (BJI Advertising).