bluuebunny/crossref_metadata_2025 huggingface dataset:
Permeability Characterisation of Sedimentological Facies in the Bunter Sandstone Formation, Endurance CO2 Storage Site, Offshore UK
Authors: Hossain Shakhawat , Hampson Gary , Jacquemyn Carl , Jackson Matthew , Chiarella Domenico
Published: April 2024

Permeability variations due to sedimentological heterogeneity are important in controlling CO2 migration pathways, CO2 plume dynamics, and stratigraphic, capillary and dissolution trapping of CO2 in subsurface storage units and complexes. Thus, knowing these parameters is crucial to developing a CO2 injection strategy that maximizes storage and trapping efficiency. In this study we analyzed the sedimentological and permeability heterogeneity of the Bunter Sandstone Formation at the Endurance CO2 storage site, offshore UK, through integrated facies analysis, minipermeameter measurements, and thin section analysis. Detailed core logging and outcrop analysis were performed to identify facies and related heterogeneities. Twelve lithofacies have been identified in cores. By analyzing the stacking patterns of the facies, three facies associations and three architectural elements were identified in cores and outcrop analogues, respectively. Heterogeneities occur at all the scales ranging from mm-scale laminae to 10’s m-scale architectural elements. Permeability variations at outcrop and in core are closely related to sedimentological heterogeneities. Minipermeameter and core plug permeability data show up to three orders of magnitude variation across the facies. Cross-bedded (Sp, St, Sl, Spmc) and structureless (Sm) sandstones are the most permeable (4-5400 mD) facies, whereas pebbly conglomerates (Gmg) and laminated mudstones (Fl) are least permeable (0.18-89 mD) facies. Mottled and deformed sandstone (Smd) and crinkly laminated sandstone (Sc) have highly variable permeability (0.69-480 mD). Minipermeameter data reveal permeability varies by a factor of five at centimeter scale within planar cross-bedded (Sp), trough cross-bedded (St) and planar bedded sandstone (Sh) sandstone facies, while planar cross-bedded sandstone with mud clasts along foresets (Spmc) exhibit permeability variation up to a factor of four. Petrographic analysis of thin sections shows that these permeability variations are related to changes in grain size, clay content, and distribution of dolomite cements.
Anticipating Multisensory Environments: Revealing Interactions in Predictions Across Sensory Modalities Unveils the Supra-modal Nature of the Predictive System
Authors: Sabio-Albert Marc , Fuentemilla Lluís , Pérez Alexis
Published: April 2024

Our experience is generally framed in multisensory environments abundant in predictive information. Accordingly, previous research on statistical learning has shown that humans can learn regularities in different sensory modalities in parallel, but left open the question of whether participants also anticipated multisensory inputs. Across two experiments, we tested whether participants capitalized on prior expectations to facilitate perceptual processing of concurrent but independent multisensory stimuli. Participants were exposed to concurrent pairs of auditory and visual low-level stimuli (i.e., gratings and tones). In each experimental block, participants had to attend to one modality and discriminate whether the second stimulus of the attended pairs (targets) were deviant or standard, while ignoring stimuli from the other sensory modality (distractors). Orthogonal to the task goal, both the attended and unattended pairs followed transitional probabilities, so targets and distractors could be expected or unexpected. Participants performed better for expected compared to unexpected targets. This effect generalized to the distractors but only when targets were expected. Such interactive effects suggest that predictions may be gated by a supra-modal system with shared resources across sensory modalities that are distributed according to their respective behavioral relevance.
Exploring the Transdisciplinary Nexus of Young People's Future Livelihoods and Relational Well-Being: A Bibliometric Approach
Authors: Weaich Malcolm
Published: April 2024

This study interrogates the conceptual frameworks surrounding young people's livelihood strategies, particularly focusing on those contending with acute insecurity and precariousness in the Global South. A bibliometric analysis provides a critical evaluation of the shifting landscape of future work, revealing substantive gaps in literature related to young people, their wellbeing, and livelihoods. These gaps are most pronounced in the articulation of livelihood components and their interconnections with wellbeing, sustainable development, and equitable energy transitions. Addressing these lacunae, the study enhances the conceptual understanding of access within livelihoods research and advocates for the integration of a Relational Well-Being approach. This research underscores the salience of relationality in comprehending young people's future livelihoods, seeking to provide an objective nuanced understanding of the interplay between livelihood strategies and the multifarious aspects of wellbeing. In particular, the study delineates three pivotal categories for future research: examining the impact of social relationships and community networks on the livelihood strategies and wellbeing of young people; identifying the barriers and facilitators to sustainable livelihoods within the prism of Relational Well-Being; and exploring how the Relational Well-Being framework can refine existing conceptualisations of livelihood and wellbeing, aimed at forging sustainable interventions. By critically engaging with the definitions and scope of “young people” in scholarly inquiry, this study fosters a deeper engagement with young people's lived realities, their livelihoods, and Relational Well-Being, with an expanded emphasis on the Global South. The outcome of this research develops twenty possible future studies from the data analysed.
IMPLEMENTACIÓN DEL PROCESO DE CONSERVACIÓN DE LA ESTRUCTURA DE LA CAPA DE RODADURA DE LA VÍA PATATE ECUADOR.
Authors: López Alex , Mayacela Margarita , Tuston Julio , Ramírez Francisco
Published: April 2024

La economía de la provincia de Tungurahua dedicada en su mayoría a la producción agrícola y actividades comerciales se sirve especialmente de la red vial, es por ello que se necesita que esta funcione de manera eficiente y cumpla con niveles de serviciabilidad mínimos requeridos en normativa internacional NEVI 12 y MOP 03. La presente investigación genera un plan de mantenimiento vial, en donde se realizó georreferenciación, estudios de movilidad vehicular, ensayos de suelos, ensayos de campo para conocer el estado y comportamiento estructural de la capa de rodadura. La vía de estudio posterior a la evaluación de trafico existente se presentó como una carretera Colectora tipo II de acuerdo a la clasificación de la normativa, además se determinó que posee una subrasante de calidad aceptable con un porcentaje de capacidad de soporte (CBR) de 18%, dicha subrasante está conformada por arenas mal graduadas. En cuanto a la capa de rodadura al ser evaluada por el método (PCI), índice de condición de pavimento, se conoce que con la calificación promedio de 80.31, lo que la define dentro de la clasificación como buen estado superficialmente y de la misma manera estructuralmente pues para la evaluación de la misma con el ensayo de viga Benkelman con el cual se miden deflexiones admisibles, presentó deflexiones tipo I que hacen referencia a un comportamiento adecuado de la estructura del pavimento. La información obtenida nos ayudara a definir el tipo de mantenimiento necesario en la vía en estudio, que para este caso corresponde a un mantenimiento periódico, así como también el tiempo en el cual se deben hacer las intervenciones con las diferentes actividades que corresponden al mantenimiento vial, es decir se define que hacer y cuando hacerlo.
Data Ethics in Library Learning Analytics
Authors: Salo Dorothea
Published: April 2024

Introduction: This study examines data handling and data ethics in library learning analytics research projects involving the use of data about students as library patrons, alongside a baseline evaluation of the benefits of library learning analytics to libraries practicing it.
Methods: Citations were gathered via citation chain aggregation from the original Value of Academic Libraries report, then winnowed to projects with English-language artifacts documenting them, collection and/or analysis of library data about students, and a research question about the contribution of student library use to student success.
Results and Discussion: Much of this research is reaching publication despite not employing best practices nor documenting respect for human-subjects research ethics, library-specific privacy and confidentiality ethics, and student data-privacy expectations. Very few projects create direct benefits to libraries. This result would not be possible without gaps or lapses in editorial processes, peer review, and upstream research guidance and ethics reviews.
Conclusion: Ethics reforms are required at all stages of research and publication to prevent further unethical exploitation of patron data.
THE EBBS AND FLOWS. ON THE SCOPE OF CRIMINALIZATION IN POLISH CRIMINAL LAW FROM 2012 TO 2022
Authors: Gardocki Lech
Published: April 2024

In modern criminal law, the scope of criminalization in different legal systems is considered an important part of the description of these systems. This fact is not surprising, since criminalization and possible changes in its scope are closely related to the assessment of the situation of the individual, both in the context of the rights and freedoms to which he is entitled, and when the issue of criminalization is dealt with by looking at this phenomenon from the perspective of the protection to which individuals and societies are entitled (not only, but to a large extent, criminal law protection) in relation to individual goods, the violation or exposure of which is considered socially harmful. This article takes as its object of analysis the changes in criminalization in Poland in the last decade (2012 – 2022). It analyzes and evaluates both changes in criminalization in the sense of expanding or narrowing the catalog of crimes, as well as changes in the intensity of criminalization, by which the author understands the tightening or softening of statutory threats of punishment. The latter is also discussed taking into account the use of legislative technique, aimed at shifting the emphasis from the judicial power to shape the punishment imposed in a specific criminal case, to the power of the legislature to set the statutory threat so that this power is exaggeratedly limited, mainly through the narrow inclusion in the law itself of the possibility of choosing the type of punishment and its lower and upper limits of the statutory threat.
CRIMINAL LIABILITY OF SELF-DRIVING VEHICLES UNDER HUNGARIAN CRIMINAL LAW
Authors: Hodula Máté
Published: April 2024

As self-driving evolves day by day, the accidents attributed to such technology will increase as well. If the legal environment does not prepare for these cases, the ‘liabilityvacuum’ caused by the diverging court practices could lead to the rejection of the self-driving vehicles both by the consumers and the legislators. I am approaching the various questions posed by this technology from a continental standpoint, therefore the research examines the liability of the natural persons behind the technology. If we can provide possible answers to these issues, then the criminal liability of legal persons – an unfamiliar concept from the standpoint of the majority of the continental criminal law regimes – does not have to be applied to answer the central questions. If the national rules can determine the obligations of the natural persons travelling in a self-driving vehicle, their criminal liability can be decided accordingly and there is no need to create new offences.
Liberalism Philosophy Influence in Islamic Social Movements in Malaysia
Authors: Ibrahim Majdi  , Wan Ramli Wan Adli , Mohd Khambali @ Hambali Khadijah
Published: April 2024

This article focuses on the early development of evolution and the development of liberalism specifically in Malaysia since it was brought by the western colonists to form a social movement in Malaysia.  The objective of this article is to see how liberalism progresses in influencing a liberal Islamic movement in Malaysia.  The philosophy of liberalism in Malaysia is not a new issue, but a philosophy that has long existed among the Malaysian Muslim community.  This article uses the method of historical analysis to look at the development of the philosophy of liberalism to highlight the impact of the evolution of liberalism in Malaysia. This writing found that the philosophy of liberalism has been seen as having an evolution among the community in Malaysia since it was first brought by the colonialists to form a social movement in Malaysia which is referred to as the liberal Islamic movement. In fact, supporters of liberalism are increasingly highlighting the philosophy of liberalism, especially through the liberal Islamic movement and in the name of human rights. Although the philosophy of liberalism has existed in the middle of society in areas of life such as economics, politics, culture, law and administration in Malaysia. This article found that the development and dissemination of the philosophy of liberalism can lead to threats in the society if there are no social control of various new ideology in Malaysia.
INDICATORS OF MUC 5AC AND MUC 1 MUCOPOLYSACCHARIDE EXPRESSION IN THE NASAL MUCOSA OF PATIENTS WITH POSTNASAL DRIP SYNDROME AND NASAL SEPTUM DEVIATION
Authors: Babchenko Nataliia V. , Dieieva Yulia V. , Konovalov Serhii E. , Motailo Oleksii V.
Published: April 2024

Introduction. Determining the cause of postnasal drip syndrome can be quite challenging. Nasal septum deformation has been recognized as one possible factor. Understanding the fundamental processes of postnasal drip syndrome is crucial for developing targeted therapeutic strategies for treating this pathology. In our study, we examined the clinical and histological features of postnasal drip syndrome in individuals with nasal septum deformation and investigated the expression of mucopolysaccharides, specifically the indicators of MUC 5AC and MUC 1.
The aim. This study aims to investigate the clinical and histological aspects of postnasal drip syndrome (PNDS) in patients with nasal septum deformation. Specifically, the study aims to explore the expression levels of MUC5AC and MUC1 in biopsies of the nasal turbinate mucosa.
Materials and methods. A total of 29 samples of nasal mucosa from the lower nasal turbinates were collected. These samples were divided into two groups: patients with nasal septum deviation with and without postnasal drip syndrome. Levels of MUC5AC and MUC1 were determined using Western blot analysis.
Results. Upon analysis of histological sections, we identified a significant increase in tissue metaplasia and lymphoid infiltration in the nasal mucosa of patients with postnasal drip syndrome compared to the control group. The levels of mucopolysaccharides, MUC5AC and MUC1, were higher in the nasal mucosa of the research group compared to the control group.
Conclusions. The obtained data suggest that anatomical changes in the nasal cavity may play a role in the development of postnasal drip syndrome through alterations in mucin secretion.
ENDOTHELIAL DYSFUNCTION AND GASTROESOPHAGEAL REFLUX DISEASE: STUDY OF COMMON PATHOGENETIC MECHANISMS AND WAYS OF CORRECTION
Authors: Kashyrtseva Oksana M. , Novokhatnia Alina Ye. , Khomenko Liudmyla O. , Oparin Aleksey A. , Oparina Tetiana M.
Published: April 2024

The aim. To determine the role and place of endothelial dysfunction in the pathogenesis of comorbid gastroesophageal reflux disease (GERD) and obesity by studying the levels of nitric oxide (NO) metabolites in blood and urine. To evaluate the efficacy and benefits of the prescribed therapy, which included the additional inclusion of a peptide compound analogous to leu-enkephalin tyrosine-2-alanine-glycine-phenylalanine-leucyl-arginine diacetate (Dalargin).
Materials and methods. Clinical manifestations were assessed using the GERD-HRQL questionnaire, levels of stable nitric oxide metabolites NO2 and total metabolites NO2 + NO3 were determined by spectrophotometric method, leptin levels were determined by enzyme-linked immunosorbent assay, pH-metry and motor function was studied by ultrasound. 130 patients were examined, including 70 patients with GERD with comorbid obesity of the first degree, 40 patients with GERD without concomitant pathology and 20 healthy individuals. The study was divided into 3 groups.
Results. It was determined that the levels of stable metabolites NO2, NO2 + NO3 in blood and urine in the group of GERD with obesity are significantly lower than in the group of isolated GERD (p<0.001). A direct correlation between the level of nitric oxide metabolites in blood and urine and acidity in the stomach and oesophagus was established; an inverse relationship between NO metabolites and the degree of gastrointestinal motor and functional disorders, the severity of clinical manifestations, and the level of hormonal secretion by adipocytes. The supplemental inclusion of Dalargin improved the effectiveness and quality of pathogenetic therapy and achieved a more positive disease dynamics and is recommended for prescription in practice.
Conclusions. Obesity is a predictor of a more severe course of GERD and more severe endothelial dysfunction. There is a correlation between the severity of endothelial dysfunction and the degree of functional, motor and secretory disorders of the stomach and oesophagus.
MEDICAL LITERACY DEVELOPMENT OF ADULT POPULATION IN SLOVAKIA AND UKRAINE
Authors: Voliarska Olena V. , Matulcik Julius , Puchyna Olga V. , Zadorozhna-Kniahnytska Lenina
Published: April 2024

Introduction. The diagnosis results of medical literacy levels among different groups of adult population in Slovakia are given in this article. This research was done by the scientists of Pedagogy Department, Philosophy Faculty, Comenius University in Bratislava, together with Ukrainian colleagues.
The aim of research. The objective of the article was aimed at studying the specifics of medical literacy development in European countries and making a comparative research analysis for determining the levels of medical literacy among adult population in Slovakia and Ukraine and making up the recommendations.
Materials and methods. The diagnostic surveying of adults was made according to the modification of European Health Literacy Survey Questionnaire (HLS_EU_Q47), which was offered to the respondents to fill out in the format of a Google form. The methodological approaches used in the study are as follows: andragogical, competency-based, cultural, person-centered, and systems-based.
Results. The majority of the respondents in the European countries were found to have the insufficient level of medical literacy. In Slovakia, the youth aged 18-24 turned out to be more active and conscious of health issues. It was specified that the comprehensive study of medical literacy issues among adults was not carried out in Ukraine at all. Positively estimating the research experience of medical literacy levels among adult population in Slovakia, it is worthwhile to single out the progressive ideas of its implementation in an area of support, maintenance and restoration of health for adults in Ukraine. The recommendations were made up for increasing medical literacy of different groups of adult population at the national and regional levels as well as at the level of healthcare and educational institutions and universities.
Conclusions. The research results of medical literacy among adult population can be recommended to the representatives of governmental institutions, universities, healthcare institutions so as to update legislation, prepare teaching and methodological materials for universities and postgraduate education.
SHORT-TERM OUTCOMES OF HOME-BASED AND OUTPATIENT PROGRAMS OF PHYSICAL THERAPY IN PATIENTS WITH FROZEN SHOULDER AND MYOFASCIAL PAIN SYNDROME
Authors: Rusanov Andrii P. , Vitomskyi Volodymyr V. , Roi Iryna V. , Borzykh Natalia O. , Vitomskа Maryna V.
Published: April 2024

The aim: is to compare short-term results of home-based and outpatient programs of physical therapy among patients with frozen shoulder and concomitant thoracic myofascial pain syndrome.
Materials and methods. The study involved 80 patients. The range of motion in the shoulder joint affected by capsulitis was assessed. A numerical pain scale was used to assess pain sensations when pressing on trigger points. Functional limitations in the shoulder were measured by means of the Oxford Shoulder Score (before and 1.5 months after the end of the physical therapy). Participants were divided into two groups: home-based group (HG) and outpatient group (ОG). All the patients were consulted by a physical therapist. ОG patients received end-range mobilization with the assistance of a physical therapist 5 times a week to improve shoulder joint mobility. Most of ОG participants received 15 procedures (3 weeks). Patients HG performed therapeutic exercises without any assistance at home. (twice a day, 3 weeks). In terms of trigger points therapy, the patients performed ischemic compression without any assistance.
Results. Patients of both groups demonstrated positive dynamics of the studied indicators. Comparison of the short-term results of the therapy according to range of motion and pain showed better indicators in the ОG. Comparison of the initial results of the groups in Oxford Shoulder Score items did not reveal any significant differences. Total score was 18.2±6.5 points in ОG and 17.6±7.5 points in HG (p=0.715). Me (25%; 75%) values were 17.5 (12.5; 23.8) and 18 (13; 23.5) points, respectively. Comparison of the final results of the groups in Oxford Shoulder Score items revealed significant differences. Total score was 47 (47; 48) points in ОG and 33 (31; 35.75) points in HG (p<0.001). x̅±SD values were 46.5±2.6 and 32.8±4.4 points, respectively.
Conclusions. Short-term results of the outpatient program in terms of pain indicators, mobility of the shoulder joint and functional limitations were better as compared to the home-based program of physical therapy in patients with frozen shoulder and concomitant thoracic myofascial pain syndrome.
»Prendre de vitesse la mort«: traductions françaises de la poésie baroque allemande
Authors: Cartron Maxime
Published: April 2024

Studies and poetic anthologies devoted to the Baroque are full of texts evoking with a lux- ury of detail the horrors of the tortured or mutilated body . If, at first sight, such a choice serves to register the Baroque by delimiting its anthropological perimeter, it is decided, if we
take a closer look, that it is weighted, especially in the French translations of German »baroque« poets, with a strong ideological content: the paratexts of these translations offer a transhistorical reading, whose stated or implied objective is not so much aesthetic as political.
Translating German poetic texts from the Baroque period on the description of the corpse is an attempt at catharsis, understood as an exorcisation, by the past, of certain political disturbances of the present time.
Crossing Language Borders: The Case of Guaraní Markers in Paraguayan Spanish
Authors: Döhla Hans-Jörg , Hennemann Anja
Published: April 2024

En el español paraguayo se pueden utilizar formas evidenciales guaraníes para expresar la fuente de información, por ejemplo, ndaje (’se dice‘), así como he'i (’dice‘; del verbo guaraní e ’decir‘)
para la evidencialidad reportativa, y ra'e (había sido ’resultó que‘) para la evidencialidad inferencial (con matices mirativos). Mediante un análisis cualitativo de corpus de ejemplos tomados de la prensa amarilla paraguaya se investigan las
funciones de estos marcadores como estrategias evidenciales cuando se usan en el español paraguayo. Para ello, se comparan las funciones de los marcadores en el guaraní con el uso en el español paraguayo y se analiza su comportamiento sintáctico en ambas lenguas.
En general, el estudio muestra que en la tradición discursiva particular de la prensa amarilla el uso de estos elementos guaraníes puede considerarse sistemático e integrado.
METHOD OF DYNAMIC TENSILE TESTING OF HIGH STRENGTH FIBERS
Authors: Filippov A.P.
Published: April 2024

The work proposes and tests an experimental method for determining the high-speed tensile strength of high-strength fibers, based on a combination of the modified Kolsky compression method and the method of a thin ring made of the test material expanding under internal pressure. To create a pulsed internal pressure that causes expansion of the ring, accompanied by stretching and rupture of its constituent material, hydrodynamic loading is used in a split Hopkinson bar system under compression. To do this, between the ends of the measuring bars there is a sealed cavity with a liquid that transmits compressive pressure to the inner surface of the ring. Machine oil was used as a medium transmitting the compression impulse from the measuring rods to the inner surface of the thin-walled annular sample. The transmitting pressure bar performs the function of a dynamometer, which allows, based on the deformation pulse registered in it, to measure the amplitude of the pressure developed in the oil. Since the liquid inside the ring is practically incompressible, the measured stress transmitted into the liquid based on the transmitted pulse is equal to the pressure developed in it, which causes an axisymmetric expansion of the annular sample with the development of tangential stress in the body of the ring, leading to the rupture of high-strength reinforcing fibers. The maximum tangential stress, which corresponds to the maximum of the transmitted pulse recorded in the transmitting pressure bar, can be considered the required tensile strength of the composite ring material.
To evaluate the performance of the proposed technique, samples in the form of thin rings made of four layers of carbon fibers impregnated with polymer glue were used. Trial tests of a composite material with unidirectional reinforcement were carried out. The stretching was carried out in the direction of the fiber. As a result of the tests of the ring sample, based on the transmitted pulse in the transmitting pressure bar, the time dependence of the development of circumferential stresses in the ring was obtained. The maximum value of tangential stresses in the ring, corresponding to the tensile strength of the carbon fibers, was approximately 2120 MPa. The rate of stress growth in this case is 35000 GPa/s. The combined use of the Kolsky method and the expanding ring method made it possible to obtain a characteristic of the tensile strength of the composite material.
CALCULATION OF SHELLS BASED ON THE MIXED FEM VARIANT WITH TENSOR-VECTOR APPROXIMATION OF THE DESIRED VALUES
Authors: Klochkov Yu.V. , Nikolaev A.P. , Vakhnina O.V. , Klochkov M.Yu. , Dyukina N.S.
Published: April 2024

An algorithm for calculating thin shells based on the mixed finite element method (FEM) in a two-dimensional formulation is proposed. To correctly take into account possible displacements of the shell as a rigid body, the algorithm implements the developed tensor-vector form of the interpolation procedure of the desired values, which were chosen as the tensors of deformations and curvature at the point of the middle surface and the displacement vectors of this point. The discretization element was a quadrangular fragment of the middle surface with unknown nodes in the form of location and their first derivatives, as well as components of strain and curvature tensors among the inner surface at the nodes of the finite element. After minimizing the modified mixed functional, a 36?36 finite element stiffness matrix is formed. In order to verify the developed algorithm, a number of test problems were solved for calculating a fragment of an elliptical cylinder with an analytical solution, as well as for calculating a shell with spring supports that allow the ellipsoidal shell to move as an absolutely rigid body. Analysis of the obtained results showed that when calculating a fragment of an elliptical cylinder, the calculation scheme of which makes it possible to obtain an analytical solution, the numerical values of bending moments and normal stresses completely coincide with the values calculated from the condition of static equilibrium. An analysis of the calculation results for an ellipsoidal shell with spring supports led to the conclusion that the developed tensor-vector interpolation procedure in the mixed FEM version allows one to correctly take into account the displacements of shells as solids and obtain an adequate assessment of their stress-strain state.
A FINITE ELEMENT ANALYSES OF THE EFFECT OF HYDROSTATIC PRESSURE IN A THIN ADHESIVE LAYER ON ITS FRACTURE UNDER MIXED-MODE LOADING
Authors: Glagolev V.V. , Glagolev L.V. , Lutkhov A.I.
Published: April 2024

The problem of deformation of a sample, which is a composition of orthotropic bodies bound by an adhesive layer, realizing a mixed loading mode I + II for the layer material in the vicinity of a crack-like defect, is considered. A crack-like defect in a composite was considered both in the form of a mathematical section and a physical section, the thickness of which was considered as a linear parameter. A finite element solution with an elastic description of materials in a state of plane deformation is used. To find critical states, the values of specific elastic energy in the tip of a crack-like defect were analyzed. So, for the mathematical section, the values of energy were associated with stress intensity factors and for the physical section with the energy product in the form of the product of a linear parameter and the average specific free energy on the face of a dead-end finite element of the adhesive layer. Finding the characteristics averaged over the layer thickness was determined within the framework of the Neuber – Novozhilov approach. For a small finite value of the linear parameter the convergence of the energy product to the critical value of the specific elastic energy found for the crack model in the form of a mathematical cut is shown for equivalent loading of the sample with a physical cut and the linear parameter tends to zero. For an adhesive layer of finite thickness an energy fracture criterion is considered which takes into account the loosening of the material due to hydrostatic pressure. The loosening of the material was taken into account by the parameter which was determined from the solution of the problem of normal tension of the adhesive layer by the cantilevers of the two-cantilever beam taking into account the critical values of the specific elastic energy. A comparison is made of the calculated critical external load for the formulation of the problem using a layer of finite thickness and the classical representation of a crack-like defect in the form of a mathematical section and a layer of zero thickness under the appropriate failure criteria.
ELASTIC AND STRENGTH PARAMETERS DETERMINATION OF POLYMER COMPOSITE MATERIALS AND CYLINDRICAL SHELLS
Authors: Abashev D.R. , Bondar V.S. , Vorobyev I.A. , Sharova V.I.
Published: April 2024

The article presents a method for layout optimization in polymer composite materials that allows to assess their strength. In order to assess the stress-strain state of each layer, an orthotropic elasticity model is used assuming that the fibers in the material are parallel. The behavior model of polymer composite materials is based on the Hashin criterion, which makes it possible to separate the destruction mechanisms of matrix and fiber. The strength assessment was carried out in accordance with the structural approach involving studying the strength of each layer separately. The parameters of the deformation model and the Hashin strength criterion were determined based on the results of testing. Tests were carried out on unidirectional polymer composite materials samples cut at angles of 0, 90 and 45° to the direction of reinforcement. The verification was based on the results of bending tests of polymer composite materials samples. Verification showed high proximity between the calculation results and the experimental data. A method for selecting the layout angles of each layer of polymer composite materials has been developed making it possible to calculate the greatest strength of the cylindrical shell under various external loads. The method involves determining the stresses in each of the polymer composite materials layers, as well as Hashin indicators corresponding to the destruction of the fiber or matrix under tension or compression. Based on the indicator values, the optimal angle and layout pattern can be selected, providing the greatest margin of safety for the shell. This method allows for a preliminary assessment of the safety factor of cylindrical shells made of polymer composite materials based on the experimentally determined elastic parameters of the material and the parameters of the Hashin strength criterion. The method takes into account the angle and layout of the prepreg under the influence of internal pressure, axial compressive force and torque.
ON THE INFLUENCE OF NON-EQUILIBRIUM VACANCIES
ON THE CHARACTERISTICS OF STRAIN
INDUCED BROKEN DISLOCATION BOUNDARIES
Authors: Svirina J.V. , Perevezentsev V.N.
Published: April 2024

The influence of material supersaturation with deformation vacancies on the characteristics of broken dislocation boundaries that appear near wedge disclinations as a result of accommodative plastic deformation is considered. An analysis is made for the elastic and osmotic forces acting on the dislocations of the broken boundary. Using discrete dislocation dynamics method, computer simulation of the nonconservative motion (climb) of dislocations in the boundary plane has been carried out. The broken boundary formed as a result of the splitting of the original disclination into two partial with equal strengths and the boundary with an inhomogeneous distribution of dislocations (with a linearly decreasing misorientation) were considered as initial ones. It is shown that in the case of broken dislocation boundary formed near a positive wedge disclination, dislocation climb leads to its unlimited growth through the model grain with a simultaneous decrease of misorientation. In the case of a boundary formed near a negative disclination, the osmotic forces acting on the dislocations of the broken boundary can, at sufficiently large super saturations of the material with nonequilibrium vacancies, lead to its significant compression with a simultaneous increase of the density of the Burgers vector. In this case, the choice of the initial configuration of the broken boundary has practically no effect on the characteristics of the equilibrium distribution of dislocations. The density distributions of the Burgers vector along the broken boundary are calculated for the case of small and large supersaturations of the material with nonequilibrium vacancies. The critical value of supersaturation above which the boundary compression occurs is calculated. The boundary compression leads to a significant increase in tensile stresses in its vicinity. In this case, the maximum tensile stresses in the plane coinciding with the plane of the boundary are reached at the boundary break point. The results obtained may be of interest in the analysis of possible mechanisms for the initiation of cracks and pores during ductile fracture of metals.
ELASTIC-PLASTIC DEFORMATION OF STEEL-CONCRETE BEAMS WITH LOCAL CRUMPLING DURING THREE-POINT BENDING
Authors: Khazov P.A. , Vedyajkina O.I. , Pomazov A.P. , Kozhanov D.A.
Published: April 2024

The study presents the results of experimental modeling of elastoplastic deformation of bent massive concrete filled steel tube beams under three-point bending. It has been shown that local deformations and local crushing in such structures have a significant impact on their behavior. The applicability of the theory of bending of a hollow steel beam according to the Bernoulli model is analyzed. A comparison has been made of the bearing capacity and stress-strain state of hollow steel tubes (according to the Bernoulli model and the results of experiments) and concrete filled steel tube beams, and the contribution of the concrete core to the bending resistance during elastoplastic deformation has been quantitatively assessed. The actual load-bearing capacity of a hollow pipe during three-point bending does not exceed 50% of the calculated theoretically determined one, which indicates the impossibility of using the classical bending model when designing systems of this kind. In this case, the concrete filled steel tube beam not only ensures the full functioning of the metal during the deformation process, preventing its disruption, but also provides some increase in load-bearing capacity due to the inclusion of a compressed zone in the concrete work. The increase in the load-bearing capacity of a beam due to the introduction of a concrete core can reach 70%. Despite their significant weight, bendable tube-concrete rods can be recommended in conditions of a complex stress-strain state, in which, in addition to transverse bending loads, significant longitudinal forces arise, as well as local force factors that contribute to the occurrence of local crushing deformations, since, unlike a thin-walled hollow tube, concrete the core significantly prevents these effects. Based on the results of the study, the potential effectiveness of flexible tube-concrete elements for a number of structures was proven.
STUDY OF THE RELATIONSHIP BETWEEN FATIGUE CHARACTERISTICS AND ELASTIC MODULUS OF METASTABLE AUSTENITIC STEELS
Authors: Sergeeva O.A. , Mishakin V.V. , Klyushnikov V.A.
Published: April 2024

This work is devoted to studying the influence of cyclic deformation on the elastic moduli of metastable austenitic steel. The estimated calculation of the modules of the strain-induced martensite and the modules of the matrix of the material (austenite) in the Voigt approximation.
The modulus calculations were made according to the ultrasonic wave velocity measurements taking into account changes in the density of the material due to the difference in the volumes of the unit cells of the matrix and the ??-martensite. The volume fraction of ??-martensite and its change during cyclic deformation were determined by the eddy-current method. The influence of the strain cycle amplitude on the increase in the volume fraction of martensite was studied. The dependences of the relative change in Young's modulus, shear modulus, volume compression modulus on the number of loading cycles for metastable steel 12Kh18N10T are given. Relationships between the moduli change and the characteristics of cyclic loading of steel are obtained: the hardening of the material and the energy density in the cycle, used to calculate the service life using the methods of deformable solid mechanics. Studies shown that the critical change in the modules corresponding to the appearance of a microcrack depends on the strain cycle amplitude.The maximum change in the modules of metastable steel 12Kh18N10T was 4.5%; that by an order more than in steels that don't undergo phase transformations.
A high degree of correlation between the change in elastic moduli and the fatigue characteristics of metastable austenitic steel is revealed: the hardening of the material and the energy density in the cycle. Correlations between the fatigue life of 12Kh18N10T steel and the change in elastic modulus – shear modulus and Young's modulus are obtained, which makes it possible to assess the state of the studied steel based on acoustic measurements.
Revisiting block deordering in finite-domain state variable planning
Authors: Noor Sabah Binte , Siddiqui Fazlul Hasan
Published: April 2024

Plan deordering removes unnecessary ordering constraints between actions in a plan, facilitating plan execution flexibility and several other tasks, such as plan reuse, modification, and decomposition. Block deordering is a variant of plan deordering that encapsulates coherent actions into blocks to eliminate further ordering constraints from a partial-order plan (POP) and is useful in many applications (e.g., generating macro-actions and improving the overall plan quality). The existing block deordering strategy is formulated in propositional encodings. Finite-domain state variable encodings (e.g., SAS+ representation), in contrast with propositional encodings, can capture the internal structure and the behavior of state variables of a planning instance through concise constructs such as causal graphs (CGs) and domain transition graphs (DTGs). This work redefines the semantics of block deordering terminologies and related plan deordering concepts in finite domain representation (FDR). Our proposed semantics also resolves some limitations of the existing block semantics and further enhance plan flexibility. In addition, this work exploits block deordering to eliminate redundant actions from a POP. A comparative analysis is also performed on block deordering with various deordering/reordering techniques using explanation-based order generalization (EOG) and MaxSAT. Our experiments on the benchmark problems from International Planning Competitions (IPC) show that our FDR formalism of block deordering significantly improves the plan execution flexibility while maintaining good coverage and execution time.
Effects of Exercise Training on Immune-Related Genes and Pathways in the Cortex of Animal Models of Alzheimer’s Disease: A Systematic Review
Authors: Widjaya Michael Anekson , Lee Shin-Da , Cheng Wei-Chung , Wu Bor-Tsang
Published: April 2024

Background: Alzheimer’s disease (AD) is a chronic neurodegenerative disease that affects the immune system due to the accumulation of amyloid-β (Aβ) and tau associated molecular pathology and other pathogenic processes. To address AD pathogenesis, various approaches had been conducted from drug development to lifestyle modification to reduce the prevalence of AD. Exercise is considered a prominent lifestyle modification to combat AD. Objective: This observation prompted us to review the literature on exercise related to immune genes in the cortex of animal models of AD. We focused on animal model studies due to their prevalence in this domain. Methods: The systematic review was conducted according to PRISMA standards using Web of Science (WoS) and PubMed databases. Any kind of genes, proteins, and molecular molecules were included in this systematic review. The list of these immune-related molecules was analyzed in the STRING database for functional enrichment analysis. Results: We found that 17 research studies discussed immune-related molecules and 30 immune proteins. These studies showed that exercise had the ability to ameliorate dysfunction in AD-related pathways, which led to decreasing the expression of microglia-related pathways and Th17-related immune pathways. As a result of decreasing the expression of immune-related pathways, the expression of apoptosis-related pathways was also decreasing, and neuronal survival was increased by exercise activity. Conclusions: Based on functional enrichment analysis, exercise not only could reduce apoptotic factors and immune components but also could increase cell survival and Aβ clearance in cortex samples. PROSPERO ID: CRD42022326093.
Pol-SAR image classification using multifarious stratification stratagem in machine learning
Authors: Ashwin P.V. , Ansal K.A.
Published: April 2024

Image classification using polarimetric synthetic aperture radar (Pol-SAR) is becoming more important in image processing for remote sensing applications. However, in the existing techniques, during the feature extraction process, there exist some limitations including laborious endeavour for Pol-SAR image classification, identifying intrinsic features for target recognition is difficult in feature selection, and pixel-level Pol-SAR image classification is difficult for obtaining more precise and coherent interpretation consequences. Hence to overcome these issues, a novel Multifarious Stratification Stratagem in machine learning is proposed to achieve pixel-level Pol-SAR classification. In this proposed model, a novel Scrumptious Integrant Wrenching method is used for efficient feature extraction. It is compatible with the orientation-sensitive of the Pol-SAR image which increases the variety of intra-layer features. To remove the difficulty in feature selection, a novel Episodicical Proximity Selection method is proposed in which a Split-level parallel feature selection strategy is used to select the best qualities from the extracted features. To tackle the difficulty in classification, an Elastic Net Classifier (ENC) is used that find the coefficient vector for the linear combination of the training sets. This efficiently classified the best features in the Pol-SAR images and improved the proposed system’s accuracy. As a result, the performance measures of the proposed system demonstrate that the accuracy is increased by 99.69%, precision is increased by 98.99%, recall is increased by 98.99%, sensitivity is increased by 98.99%, and F1-score is increased by 98.99% as a response.
IMF-MF: Interactive moment localization with adaptive multimodal fusion and self-attention
Authors: Singh Pratibha , Kushwaha Alok Kumar Singh , Varshney Neeraj
Published: April 2024

Precise video moment retrieval is crucial for enabling users to locate specific moments within a large video corpus. This paper presents Interactive Moment Localization with Multimodal Fusion (IMF-MF), a novel interactive moment localization with multimodal fusion model that leverages the power of self-attention to achieve state-of-the-art performance. IMF-MF effectively integrates query context and multimodal features, including visual and audio information, to accurately localize moments of interest. The model operates in two distinct phases: feature fusion and joint representation learning. The first phase dynamically calculates fusion weights for adapting the combination of multimodal video content, ensuring that the most relevant features are prioritized. The second phase employs bi-directional attention to tightly couple video and query features into a unified joint representation for moment localization. This joint representation captures long-range dependencies and complex patterns, enabling the model to effectively distinguish between relevant and irrelevant video segments. The effectiveness of IMF-MF is demonstrated through comprehensive evaluations on three benchmark datasets: TVR for closed-world TV episodes and Charades for open-world user-generated videos, DiDeMo dataset, Open-world, diverse video moment retrieval dataset. The empirical results indicate that the proposed approach surpasses existing state-of-the-art methods in terms of retrieval accuracy, as evaluated by metrics like Recall (R1, R5, R10, and R100) and Intersection-of-Union (IoU). The results consistently demonstrate IMF-MF’s superior performance compared to existing state-of-the-art methods, highlighting the benefits of its innovative interactive moment localization approach and the use of self-attention for feature representation and attention modeling.
RETRACTED: Some types of pseudo valuations on hyper BCK-algebras
Authors: Bakhshi Mahmood , Ahn Sun Shin , Jun Young Bae , Borzooei Rajab Ali
Published: April 2024

This article has been retracted. A retraction notice can be found at https://doi.org/10.3233/JIFS-219433.