bluuebunny/crossref_metadata_2025 huggingface dataset:
A Game Theoretic approach based virtual machine migration for cloud environment security
Authors: Elmir Iman , El mehdi Kandoussi , Mohamed Hanini , Abdelkrim Haqiq , Kim Dong seong
Published: October 2022

In cloud computing environment, static configurations can provide for the attackers an environment too easy for exploitation and discovering the network vulnerabilities in order to compromise the network and launching intrusions; while dynamic reconfiguration seeks to develop a virtual machine (VM) migration over the cloud by applying unpredictability of network configuration’s change, and thus improving the system security. In this work a novel approach that performs proactive and reactive measures to ensure a high availability and to minimize the attack surface using VM migration is proposed. This interaction between attack and defense systems was formulated as game model. As result, we have calculated the Nash equilibrium and the utilities for the both attacker and defender, evaluate the parameters which can maximize the defender’s utility when the VM migration was planned and identify the potential attack paths. Therefore, the effectiveness of the game model was validated by some numerical results that determine optimal migration strategies in order to ensure the security of the system.
Enhanced Ant-Based Routing for Improving Performance of Wireless Sensor Network
Authors: Jamal Abdul Nasir Husna , Ku-Mahamud Ku Ruhana , Kamioka Eiji
Published: October 2022

Routing packets from the source node to the destination node in wireless sensor networks WSN is complicated due to the distributed and heterogeneous nature of sensor nodes. An ant colony system algorithm for packet routing in WSN that focuses on a pheromone update technique is proposed in this paper. The proposed algorithm will determine the best path to be used in the submission of packets while considering the capacity of each sensor node such as the remaining energy and distance to the destination node. Global pheromone update and local pheromone update are used in the proposed algorithm with the aim to distribute the packets fairly and to prevent the energy depletion of the sensor nodes. Performance of the proposed algorithm has outperformed three (3) other common algorithms in static WSN environment in terms of throughput, energy consumption and energy efficiency which will result to reduction of packet loss rate during packet routing and increase of network lifetime.
Impact of Load Variability Modelling on Probabilistic Power System Transient Stability
Authors:   Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa, Ncwane Siyanda , Folly Komla A.
Published: October 2022

Load in a power system is variable due to changes in customer demand. Probability distribution functions (PDFs) are commonly used to model power system load variability. The PDFs are generally selected based on their fit to load density. However, PDFs selected based solely on their fit to load density cannot be guaranteed to model the load range. PDFs that model the load range can synthesise maximum and minimum load values. The ability of PDFs to synthesise maximum and minimum load values ensures that the modelled load can be used to develop the power system peak and minimum demand. In this paper, PDFs are selected based on: (1) having a good fit to load density and (2) their ability to synthesise the load range. The results show that PDFs with a good fit to load density and that also model the load range result in power system transient stability results that are similar to those produced when measured load is used.
Investigation of Engineering Students’ Attitude towards Virtual Labs during the COVID-19 Distance Education
Authors:   Department of Electronics, University of Ruse Angel Kanchev, Ruse, Bulgaria, Evstatiev Boris , Hristova Teodora , Gabrovska-Evstatieva Katerina
Published: October 2022

This study aims to assess engineering students’ experience with virtual labs (VLs) during the COVID-19 distant education. It is based on a questionnaire that was prepared and distributed to students from two Bulgarian universities. The data is used to assess the efficiency of the different instructional delivery methods, the impact of VLs on the respondents' motivation, as well as their vision regarding the future of VLs in the post-COVID educational system. The obtained results indicate that students in different engineering areas have a different attitude towards VLs and even though their motivation is influenced positively, the majority expects face-to-face labs to be dominating over virtual ones.
Student-Led Music Curriculum: Achieving Self-Regulated Learning through Project-Based and Inquiry-Based Pedagogies
Authors:   North America International School, Shanghai, China, Mamedov Nikita
Published: October 2022

The music curriculum contains multiple disciplines, all intertwined through standards, objectives, and goals. The 21st-century learning practices emphasize music pedagogy’s applied purposes from performative and academic perspectives while outweighing the exam-driven nature to generate motivation and appreciation for music. This research defines curricular innovations that allow for a student-led music program with a particular emphasis on performative components of music education that – along with project-based and inquiry-based pedagogies – align students on a path to self-regulated learning. The paper discusses and analyzes the structures evoked by educators to allow students to produce a dynamic student-led curriculum. Furthermore, the article outlines the motivational advantages that the revised curriculum engraves within its four-step music performance framework in the context of McClelland's motivators.
The Impact of Interactive Whiteboard Use on Teaching Grammar to Grade Seven EFL Learners
Authors:   English Department, Jinan University, Tripoli, Lebanon, Al-Sabbagh Rana S.
Published: October 2022

This research aims to shed light on the importance of integrating the Interactive Whiteboard in grammar learning. In this line, a qualitative quantitative study was conducted on sixty English as second foreign language seventh-graders over duration of fifteen weeks in grammar lessons. Thirty participants (experimental group) at Saba Zreik School (SZS) benefited from implementing the Interactive Whiteboard in grammar sessions, while thirty students (control group) at Tarbiya Hadith School (THS) did not receive such treatment. The study aims to increase educators' awareness of the efficiency of using the interactive Whiteboard in facilitating the teaching/ learning process and in boosting learners' motivation. For this reason, a grammar pre-test and a grammar post-test were conducted in order to compare and contrast the grammatical proficiency of the control and the experimental groups before and after the treatment period. The results were analyzed by SPSS; hypothesis one correlating Whiteboard usage with students' grammatical recognition level was confirmed; hypothesis two associating the implementation of Whiteboard to better proficiency in grammatical production level was asserted. Furthermore, the questionnaire analysis confirmed the research highlighting the positive role of the Interactive Whiteboard in boosting learners' motivation to learn English. Finally, recommendations for teachers, learners, curriculum designers, and future research have been incorporated.
Symptomatic and Promising Disease-Modifying Treatments for Dementia Syndromes
Authors: Mohammadian Fatemeh , Mohebbi Niayesh
Published: October 2022

The Article Abstract is not available.
Evaluating the Effects of Clinical Characteristics and Therapeutic Regimens on Mortality in Hospitalized Patients with Severe COVID-19
Authors: Karimpour-razkenari Elahe , Boskabadi Javad , Ghazaeian Monireh , Samaee Hamidreza , Azizi Hanieh , Esfandiari Fatemeh , Mousavi Seyed Abdollah , Fallah Sahar , Talebi Sekineh
Published: October 2022

Background: The coronavirus disease 2019 (COVID-19) is highly contagious and has turned into a global health problem.  In this study, we investigated the role of clinical and laboratory characteristics along with administered therapeutic agents in patients with COVID-19, and identified some effective factors on the mortality of these individuals.
Methods: In this retrospective study, we evaluated the data from all the hospitalized patients who had been diagnosed with COVID-19 between February 23 and May 23, 2020. The data were obtained from medical records. Additionally, a checklist was used to record demographic, clinical, laboratory, imaging, and treatment data for each patient.
Results: Totally, 478 patients were involved in this study, and their median age was 58.5 years. Of these, 53.3% patients were male. The most common pre-existing underlying disease was hypertension (37.9%), and the mortality group had significantly more comorbidities (85.4%).  Higher neutrophil lymphocyte ratio (NLR), lymphopenia, and reduced hemoglobin were more frequent in the mortality group (p < 0.001).  Similarly, the need to be admitted to the intensive care unit was significantly greater in the mortality group (p<0.001). The most frequently administered therapeutic regimens included hydroxychloroquine and lopinavir/ritonavir, which did not have any correlation with survival outcome.
Conclusion: Older age, opioid addiction, cardiovascular disease, kidney disease, baseline NLR and hemoglobin, and ICU admission were independently associated with COVID-19 mortality. On the other hand, hydroxychloroquine and lopinavir/ritonavir indicated no beneficial effects on patients’ outcome.
Pharmacoeconomics and Utilization of Intravenous Proton Pump Inhibitors in a Tertiary Care Hospital
Authors: Kadam Prerana , Tiwari Smita , Daswani Bharti , Taware Ajay , Hiray Rajesh
Published: October 2022

Background: Proton pump inhibitors (PPIs) are one of the most frequently prescribed class of drugs worldwide contributing to the increase in economic burden on the healthcare system. To study the utilization of intravenous proton-pump-inhibitors (PPIs) according to its indications, comorbidities and related pharmacoeconomics in a tertiary care teaching hospital
Methods: A prospective-observational study was conducted over 3 months. Case-records of 300 indoor patients were reviewed for IV (intravenous) pantoprazole prescription, as it was the only PPI available at the hospital in IV as well as oral formulations and relevant data was procured.
Results: Amongst 300 patient records, 72% were males whereas 28% were females and mean age was 41.18 years (S.D. ± 15.91). 37.33% of the patients were prescribed PPIs for Stress ulcer prophylaxis and 62.66% for non-stress ulcer prophylaxis. 62.66% patients were prescribed IV PPIs inappropriately and 74% were found to be potential candidates for oral pantoprazole therapy without affecting patient outcomes. Utilisation of PPIs was found to be 0.87 defined daily dose (DDD)/100 bed days. The cost of administration for intravenous pantoprazole therapy per patient per day accounted to INR 64.34 and that for oral formulation of the same summed up to INR 1.36. The percentage reduction in the cost of administration of PPI therapy per patient in potential candidates for oral PPI therapy was found to be 97.8%. Antimicrobials (36%) were the most common drugs prescribed concomitantly followed by antiemetics (25%).
Conclusion: Subtle changes like shifting the patient to oral formulations when clinically permissible can make a significant positive contribution in resource limited settings without negatively impacting patient outcomes. This will effectively reduce the economic burden on the patients and the healthcare system which is of utmost importance in a resource limited setting like tertiary care hospitals.
None Herbal Agents as Preventive and Therapeutic Measures for Doxorubicin Induced Hepatotoxicity: A Comprehensive Review
Authors: Mahmoudi Faezeh , Elyasi Sepideh
Published: October 2022

Cancer is one of the most common human diseases and a leading cause of human mortality in rencent years. Doxorubicin (DOX) is an important anti-cancer agent belonging to anthracyclines drug category. This chemotherapeutic agent acts against cancer cells through different mechanisms; however, its use is related with numerous acute and chronic dose-related side effects and toxicities including hepatotoxicity. The aim of this study was to conduct a comprehensive review of in vitro, in vivo and any human studies regarding the protective effects of synthetic compounds against DOX-induced liver injury.The search was conducted in embase, PubMed and Scopus databases using the following keywords: “doxorubicin”, “Adriamycin”, “hepatotoxicity”, “liver injury”, “liver damage” and “hepatoprotective” to find experimental and preclinical studies regarding the effects of various compounds on DOX-induced hepatotoxicity. Twenty-one eligible studies to the end of May 2022 finally were reviewed (19 in vivo and 2 both in vivo and in vitro studies). Our results demonstrated that all of these drugs, except acetylsalicylic acid, had considerable hepatoprotective effects against DOX (deferoxamine had a mild effect). In addition, except glutathione, none of the studied drugs and compounds attenuated the antitumor efficacy of DOX treatment. Moreover, no human study was available in this fieild. Altogether, our results demonstrated that most of compounds with anti-apoptosis, anti-inflammatory and antioxidant properties are efficacious against DOX-induced hepatotoxicity and may have potential for being considered for inclusion in the chemotherapeutic regimes of cancer patients, after fully been assessed in well-desgined large clinical trials.
Surgical Treatment of Male Infertility
Authors: ÇAYAN Selahittin
Published: October 2022

Male infertility may occur due to obstructive and non-obstructive reasons, and some pathologies may be corrected with surgical and medical treatment. Such treatment may increase the possibility of spontaneous pregnancy, the success of assisted reproductive technology, and also testicular sperm retrieval rate. This review will focus on surgical treatment alternatives in infertile males. Although treatment options for varicocele in infertile men include open surgical, radiologic, and laparoscopic approaches; microsurgical varicocele repair has the highest improvement in postoperative sperm parameters with lower complication rates. Recent advances in microsurgical anastomosis techniques have increased the patency rate for proximal epididymal obstruction. Although treatment options for distal ejaculatory duct obstruction include endoscopic resection, balloon dilatation, and laser incision/excision, transurethral resection of the ejaculatory duct (TURED), is still the primary gold standard treatment of distal ejaculatory duct obstruction. The testicular sperm retrieval rate has increased with the management of correctable pathologies in men with non-obstructive azoospermia. In case of treatment failure of correctable or uncorrectable pathologies of male factor infertility, surgical sperm obtained from the urogenital tract may necessary for assisted reproductive technology. Surgical success rates for male infertility and the success of surgical sperm obtained procedures have increased dramatically over the last decades attributable to the development of microsurgical techniques and endoscopic equipment, instrumentation, and techniques.
Comparative Performance and Evaluation of Two Molecular Assays and Conventional Detection of Theileria annulata in Bovines
Authors: Ntesang K. , Kaur P. , Arora J.S. , Kashyap N. , Singla L.D.
Published: October 2022

Background: Theileria annulata is predominant and of utmost economical importance tick borne pathogen of bovines in the region which is routinely diagnosed based on the microscopic examination of Romanowsky stained thin blood smears. Present study was intended to evaluate and analyze the detection efficacy of a commercial polymerase chain reaction kit based assay in comparison to conventional PCR assay and classical microscopy for detection of T. annulata from blood samples of bovines from Punjab state. Methods: In this comparative study 360 bovine blood samples from various districts of agro-climatic zones in Punjab were first screened for T. annulata by Giemsa-stained thin blood smear (GSTBS) examination. The same panel of blood samples was tested for T. annulata by a commercial PCR kit Bovi-TheiDX Theileria annulata (Genext Genomics) (PCR1) and established conventional PCR assay targeting merozoite piroplasm surface antigen (Tams1) gene of T. annulata (PCR2). Result: Out of 360 samples screened, positivity of T. annulata by GSTBS was found to be 12.5% (45/360) with a sensitivity of 37.20% and specificity of 96.00% when compared with commercial kit (PCR1), the difference was statistically significant (p less than .0001). The detection prevalence by PCR1 29.70% (107/360) and PCR2 assay 33.90% (122/360) showed significant (p less than .0001) difference. The conventional PCR targeting the Tams1 gene (PCR2) was found to be more sensitive (84.6%) (p less than 0.001) than PCR1 (69.7%).
Intelligent voltage regulation system in the distribution electrical network based on fuzzy logic
Authors: Rysev Pavel V. , Peshko Mikhail S. , Shepelev Alexander O.
Published: October 2022

The paper considers the issues of voltage regulation in the distribution network. The possibility of using fuzzy logic implemented in a fuzzy controller for voltage control is shown.

The purpose of the study: to increase the resource of switches of voltage regulators of power transformers when controlling voltage and reactive power modes of distribution electrical networks.

Subject of research: the introduction of a fuzzy controller in the voltage level control system in the distribution electrical network.

Methods and objects of research: the study was conducted using numerical simulation, fuzzy logic methods. The objects of the study were the distribution electrical network as well as power transformers equipped with voltage regulators, adjustable compensating devices working together under the control of a fuzzy controller.

Results of research: based on the conducted experiments, it was shown that the joint use of voltage regulation means (transformers, compensating devices) in the distribution electrical network when controlling a fuzzy controller allows to increase the resource and extend the service life of transformer switching devices.
Structural and energy properties of bivacansions in CuAu I alloy
Authors: Popova Lyudmila A.
Published: October 2022

Subject of research: model alloy CuAu I.

The purpose of research: to study the influence of divacancies of various types on the structural and energy characteristics of the alloy.

Methods and objects of research: computer experiments were carried out using the method of molecular dynamics for the calculation block of an ordered CuAu I alloy with the L10 superstructure.

The main results of research: the formation energy of each type of divacancy and the energy gain of the divacancy compared to two non-interacting vacancies were calculated, the most energetically favorable type of divacancy was determined, and the patterns of displacements of atoms near this type of defect were shown.
Approaches to the development of an innovative educational ecosystem as the basis for improving the quality of human capital
Authors: Grosheva Tatiana A. , Aladko Olesya I. , Neprokin Pavel V.
Published: October 2022

Subject of research: the ecosystem approach is becoming more widespread in the management of business companies, non-profit institutions and public administration which proves its effectiveness and efficiency. The article attempts to generalize theoretical ideas about the role of innovative educational ecosystems in the development of human capital. This provides founds for the importance of the ecosystem approach in improving the quality of higher education.

Purpose of research: its to substantiate the effectiveness of the ecosystem approach in higher education. The goal is achieved through an analysis of the practice of ecosystem interactions between enterprises of the real sector of the economy and the university in managing the development of human capital.

Methods of research: key approaches to the study of innovative educational ecosystems are identified using general scientific methods of generalization, analysis and synthesis. Using the methods of case studies and structural analysis, the principles of functioning of modern innovation and educational ecosystems are determined. Also substantiated the advantages of the ecosystem approach in the development of human capital, the quality of which is in the interests of national development.

Main results of research: on the basis of domestic and foreign studies, the main directions for the analysis of innovative educational ecosystems from the standpoint of value created and contribution to the development of human capital are determined. The characteristic principles of modern innovation and educational ecosystems are identified, which are concretized through the analysis of the activities of the lean laboratory of Gazpromneft-Khantos on the basis of Yugra State University. The authors of the article substantiate the need for an integrated approach to assessing the potential of innovative educational ecosystems. Which includes value analysis from the perspective of all participants in the interactions. The authors also take into account the implementation of the fundamental principles of the ecosystem in conjunction with the key principles for the development of the national higher education system.
Criminal liability for criminal air pollution: current problems and solutions
Authors: Makhlyayd Arthur A. , Chekmezova Elena I.
Published: October 2022

The subject of the present research is the mechanism of criminal law protection of atmospheric air from negative anthropogenic impact on it.

The purpose of the research is to identify and update the shortcomings of Article 251 of the Criminal Code of the Russian Federation, which establishes criminal liability for criminal air pollution, as well as to propose ways to eliminate them.

The methodological basis of the research is the formal legal method, the method of content analysis, as well as methods of induction and deduction. In the study of Article 251 of the Criminal Code of the Russian Federation, the content analysis method was used. The formal legal method is applied in the analysis of such concepts as "air pollution", "other changes of the natural property of air". Based on the deduction method, legally significant signs of criminal pollution of the atmosphere are determined. Using the inductive method, the research of the level of danger of anthropogenic impact on the atmosphere was managed.

As a result of the research, the difficulties of law enforcement practice of Article 251 of the Criminal Code of the Russian Federation are revealed, ways of overcoming them are determined. The problems of distinguishing between criminal air pollution and an administratively punishable offense provided for in Article 8.21 of the Code of Administrative Offences of the Russian Federation, the absence of clarification in the Criminal Code, as well as by the Plenum of the Supreme Court of the Russian Federation of the concept of "other change in the natural properties of the air", the absence of terminological unity of the Criminal Code of the Russian Federation and the relevant legislation, special attention is paid to the consideration of the subjective side of the crime, and also the contradictory approach of legislators, to identify qualifying signs of criminal pollution of the atmosphere.
Social complementary dyads: historical trends of evolution
Authors: Tolochek Vladimir A.
Published: October 2022

Subject of research: "social complementary dyads" as a socio-psychological phenomenon. The object is social groups as socio-psychological phenomena, the subject is small social groups (microgroups) in the processes of their historical evolution.

Methods of research: historical-theoretical, analysis of the empirical studies on social groups subjects interactions. The phenomenon of the dyad as one of the forms of social groups is discussed.

Main results of research: a typology of dyads has been proposed: 1) complementary social dyads (SDS); 2) supporting social structures; 3) professional dyads (complex groups); 4) professional creative (creative dyads); 5) related; 6) spontaneous; 7) destructive (parasitic, exploitative); 8) antisocial. In view of the historical trends in the increase in the types of dyads and their varieties, it is believed that in the field of education the most urgent problem is the first type of dyads complementary social dyads (SDS), represented by such combinations as "educator educated", "teacher student", "teacher student, etc. Open questions are singled out (study in the paradigm of individual rather than joint activity; binarity of group classifications; unresolved issues of the lower and upper limits of the generation and functioning of groups; evolution of the subjects of the dyad, etc.); promising aspects of further research are discussed (the problem of resources, the individuality and complementarity of the qualities of interacting subjects, the possibility of directed formation and control of the evolution of dyads, etc.).
The prospect of criminalization of crimes against humanity in Russian criminal legislation
Authors: Nevskiy Ruslan E.
Published: October 2022

Introduction. Currently, Russian criminal legislation lacks an independent norm on crimes against humanity. The author considers this to be a serious gap in the system of crimes against the peace and security of mankind (Chapter 34 of the Russian Criminal Code).

Methods. The conclusions made in the article are the result of using the general scientific dialectical method of cognition, as well as private methods (analysis, synthesis, formal-logical).

Tasks. The author in this article seeks to substantiate the need for direct criminalization of the norm on crimes against humanity in the criminal legislation of Russia.

Results. The article analyzes doctrinal positions regarding the possibility and/or necessity of criminalizing crimes against humanity in national criminal law. The provisions of the norms of international law in force for Russia are also taken into account to address the issue of criminalization of crimes against humanity in the Russian Criminal Code.

Conclusions. The article defines the following grounds for the criminalization of crimes against humanity in the Russian criminal legislation: international legal; constitutional and legal; political-legal and socio-legal. When formulating a rule on crimes against humanity in the Russian Criminal Code, the provisions of the statutes of post-war tribunals and modern ad hoc criminal tribunals recognized by Russia should be used. This rule should follow the traditional techniques of legislative technique and take into account a single contextual element inherent in all specific types of crimes against humanity.
Criminal protection of Russia's fiscal interests in the foreign economic sphere
Authors: Tsukanov Alexey N.
Published: October 2022

Subject of study: in the context of economic sanctions against Russia, the issue of international trade with foreign partners is more relevant than ever. Improving the quality of customs administration and the transition from "electronic" to "intellectual" customs, gives positive results, which are the subject of study by economists and lawyers in the field of customs. Behind the brackets are questions of the effectiveness of the criminal law protection of the fiscal interests of the state in the foreign economic sphere. An analysis of the statistical data of courts, customs and other law enforcement agencies made it possible to develop probable hypotheses for the future development of crime in this area, which is the subject of this study.

The purpose of the study: to formulate evidence-based proposals for improving the mechanisms of criminal law protection of the fiscal interests of the state in the field of foreign economic activity.

List of methods and objects of research. Statistical observation, a method of grouping and summarizing data with subsequent interpretation of the results, which made it possible to make a forecast for the effective protection of the state's fiscal interests in the foreign economic sphere.

Conclusions on the results of the study. The mechanisms of criminal law protection of the state's fiscal interests in the customs area should be of an exceptional nature, and the guidelines should be built in favor of the transparency of customs procedures and the profitability of doing honest business. Currently, there is a decrease in the number of convicts under Art. 194 of the Criminal Code of the Russian Federation with a significant increase in voluntary forms of payment of arrears on customs payments. Two main reasons have been identified: organizational improving the quality of customs administration; legal judicial practice is built on the principle of presumption of good faith of the declarant.
Extra serious crime in the Far Eastern Federal District
Authors: Shesler Alexander V.
Published: October 2022

Subject of research: dissertation research by Elena Mikhailovna Stone on the topic: "Criminological characteristics of especially serious crime in the Far Eastern Federal District", presented in the specialty 12.00.08 criminal law and criminology; penal law.

The purpose of research: to evaluate the presented study for compliance with the requirements for scientific qualification works of this type.

Methods and objects of research: in the process of studying the dissertation research, E.M. Stone used various methods of scientific knowledge, namely: dialectical, formal-logical, system-structural, analysis, synthesis, etc.

Main results of research: dissertation prepared by E.M. Stone, meets all the requirements that apply to scientific work of this type. The dissertation makes a certain contribution to the solution of the problem posed, is an actual independent scientific research, which has a complete form, is based on a sufficient empirical base, which ensures its reliability; the conclusions and proposals contained in it have scientific novelty and practical significance.

This work has been prepared on the basis of the opinion of the official opponent, A.V. Shesler, dated March 17, 2022, submitted to the Dissertation Council of the National Research Tomsk State University. 12.01.
Basic properties of foamconcrete on quartzcement binder
Authors: Kuznetsova Irina N. , Kurbanova Raziyat B.
Published: October 2022

Subject of research: the article considers foamconcrete on quartz cement binder, the mass introduction of quartz raw materials in construction can be considered practically achievable and economically profitable.
Purpose of research: the technology of foam concrete on quartz-cement binder is proposed by introducing an ultrafine filler (nanomodifier) from activated quartz waste into the binder, reduces cement consumption by 10 % and improves its physical and mechanical properties.
Methods and objects of research: the nanomodifier was obtained with mechanical and mechanohydraulic activation, the proposed filler activation technologies will improve the structure of cement stone forming foamconcrete pore-forming partitions by increasing the packing density and chemical activity of nanoscale particles in the processes of hydrate compounds phase formation.
Main results of research: the proposed technology of heat-insulating foamconcrete on quartzcement binder allows you to create a pore structure with a diameter of 52 microns at a density of 500 kg/m3 foamconcrete samples and a total porosity of 6575 %, and will also increase the strength characteristics of foamconcrete to 7.713.8 % due to discrete reinforcement with quartz waste (nanomodifier) of pore-forming partitions.
Study of the TIG weldability of aluminum matrix composite material AMg2-TiC
Authors: Luts Alfiya R. , Sherina Yuliya V.
Published: October 2022

Subject of research: Weldability of the composite alloy AMg2-TiC.

Purpose of research: Matrix alloy AMg2 is often used in welded joints. Reinforcement with a highly dispersed ceramic phase of titanium carbide leads to an increase in the hardness and strength of the alloy; therefore, it is necessary to study how the composite material behaves during and after welding.

Methods and objects of research: The object of study is the AMg2-TiC composite alloy obtained by the method of self-propagating high-temperature synthesis. Microstructural analysis was carried out on a Jeol JSM 6390A scanning electron microscope. The elemental composition was determined by X-ray microanalysis on a Jeol JSM 6390A scanning electron microscope with a Jeol JED-2200 attachment. The hardness of the samples was determined on a hardness tester ZIP TK=2M using the Brinell method according to GOST 9012-59. Weldability tests were carried out by argon-arc welding using an Everlast Power TIG 210 EXT welding inventory and filler materials that most closely match the chemical composition of the matrix alloy.

Main results of research: This paper shows the possibility of welding a composite material using the TiG method. The weldability of the composite was rated as satisfactory. Highly dispersed particles of the reinforcing phase do not dislocate from the area of ​​the base metal to the area of ​​the weld. The hardness of the composite material after argon-arc welding does not fall, but remains at the same level. The porosity in the weld zone of the composite is less than in the weld zone of the matrix alloy.
Extension of the functionality of the software for MD-simulation of the SH-synthesis of intermetallides in Ni-Al and Ti-Al nanosystems
Authors: Shmakov Igor A.
Published: October 2022

The subject of research: the methodological and functional capabilities of specialized software packages of free access LAMMPS and OVITO and author's programs used for simulation of SHS-microkinetics in heterogeneous systems.

Purpose of research: to increase information content, 3D-visualization, and adequate interpretation of the processes of structural-phase transformations at interfaces of the layered, layered-block nanoscale Ni-Al and Ti-Al systems.

Methods and objects of redearch: the molecular dynamics simulation method implemented in the basis of the LAMMPS software package simulates the process of initiation and propagation of the SHS combustion wave in the systems under study, and using the OVITO package, 3D-visualization of the processes of dissolution, diffusion, and motion of the SHS combustion wave front is carried out.

Main results of research: it is shown that the development by the author of software modules for calculating one-dimensional temperature and density profiles of the synthesized material along the direction of combustion wave motion, as well as for calculating and visualizing the 3D-structure of the distribution of synthesized intermetallic interlayers at the interface in nanoparticles with the Ni-Al "core-shell" structure (and similarly for Ti-Al) allows, in contrast to the OVITO package, to detect heterophase intermetallic structures in such systems. As a result of a large series of computational experiments on simulation of microkinetics in the studied nanoscale Ni-Al and Ti-Al systems, it has been established that the software package created by the author with support for parallel computing, which, in addition to the licensed packages LAMMPS and OVITO, integrates author's software modules, has new broader functionality in the methodological aspect of the study of the problems of physical chemistry of the SHS process and is a vivid example of the created software engineering tools in this area of research.
Russian Literature and Journalism in the Pre-revolutionary Era: A Bibliographic Index
Authors:   Lomonosov Moscow State University, Kholikov A.A. ,   Gorky Institute of World Literature of the Russian Academy of Sciences,   Shenzhen MSU — BIT University, Shapkina O.I.
Published: October 2022

The published materials are the first such large-scale special bibliographic index of Russian-language scientific research on the interaction between Russian literature and journalism in the pre-revolutionary era (mainly 1900–1917). The index does not claim to be exhaustive, but basic. It is aimed at philologists and other humanities scholars who are interested in such a complex, dispersed, diffuse and multi-genre phenomenon as the Russian periodical press, whose role in the literary life of the early twentieth century is enormous.
UTILIZAÇÃO DA ULTRASSONOGRAFIA À BEIRA LEITO PARA AVALIAÇÃO DO CONTEÚDO GÁSTRICO: REVISÃO DA LITERATURA
Authors: Fernandes Guimaraes Rodrigo , Felipe Maciel de Oliveira Brunet  , Guilherme Brito de Souza  , Juliana Ferreira Dias Xavier  , Raphael Klênio Confessor de Sousa  , Wallace Andrino da Silva
Published: October 2022

Introdução: A aspiração perioperatória do conteúdo gástrico é uma complicação grave da anestesia e está associada à alta morbimortalidade, podendo resultar em pneumonia grave que requer suporte de ventilação mecânica em até um terço dos pacientes. Com o advento da ultrassonografia portátil, a realização de ultrassom no local de atendimento se tornou relativamente fácil e viável. Objetivo: Realizar uma revisão da literatura buscando avaliar os ensaios clínicos que avaliaram a determinação de volume e conteúdo gástrico por ultrassonografia à beira do leito (POCUS). Método: A seleção dos trabalhos foi realizada em agosto de 2021 na base de dados PUBMED. Duas estratégias de busca foram utilizadas: 1 - Ultrasound AND gastric AND fasting and anesthesia; e 2 - bedside AND ultrasound AND gastric. Não foi realizado corte temporal. Todavia, somente estudos clínicos foram considerados na presente revisão. Resultados: A busca finalizou com 10 artigos que atenderam adequadamente aos critérios de inclusão. Conclusão: A POCUS é uma técnica não invasiva muito útil na determinação do conteúdo e volume gástrico com alta sensibilidade e especificidade, mesmo que o conteúdo gástrico seja incerto. Além disso, a aplicação da POCUS na determinação do esvaziamento gástrico apresentaria boa sensibilidade e especificidade na discriminação de pacientes com e sem íleo.
Descritores: Anestesiologia; Gastroenterologia; Esvaziamento gástrico; Ultrassonografia.
Mediating Role of Teachers’ Self-Efficacy and Psychological Capital in determining Success during Learning Transition Periods in Vocational Education
Authors: Jaedun Amat , Nurtanto Muhammad , Mutohhari Farid , Majid Nuur Wachid Abdul , Kurdi Musyarrafah Sulaiman
Published: October 2022

Polemics on the low quality of teaching and learning outcomes during the period of transition from online to offline learning is an issue that must be addressed by vocational education institutions. This study aims to analyze the effects of retraining and teaching experience on successful learning outcomes during the transition period, either directly or through the involvement of self-efficacy and psychological capital as mediators. An ex-post-facto study that adopted a research design from Cohen, Lawrence & Keith (2011) was carried out with a sample of 247 vocational education teachers in Indonesia. Data on all variables were collected through a closed questionnaire method based on a four-point Likert-scale. The data were then analyzed using structural equation modeling (SEM) analysis techniques with path analysis and bootstrap methods. The results of the study reveal that retraining and teaching experience have a significant effect on the success of learning outcomes during the transition between online and offline teaching methods in vocational education. There is a significant indirect effect of the two exogenous variables through the mediating involvement of self-efficacy and psychological capital. In Vocational education it is very important to organize the retraining that is needed among teachers to improve the quality of learning in the learning transition period, in addition to providing more teaching experiences to strengthen self-efficacy and provide sufficient psychological capital so that the quality of learning outcomes can be enhanced and sustained.
Mentorship and early career mentorship
Authors: Ferrari Linda , Mari Valentina , Capelli Giulia , Spolverato Gaya
Published: October 2022

Mentorship is important for the personal and professional development of a surgeon. Surgical mentoring includes technical and non-technical skills necessary for clinical activities, career improvement, leadership acquisition and research development. Mentors are important in different phases of surgical career, conferring various forms of support. The most delicate period for a surgeon is the transition between the role of trainee and physician, and the first few years are crucial to the trajectory of future career. While in the past, the main limitation for mentorship opportunities was the lack of available mentors at a single institution, more recently, long-distance mentorship opportunities have overcome this barrier. This is of particular importance for women and underrepresented minorities in surgery, who benefit the most from same gender and same ethnicity role model. Furthermore, having the opportunity to establish productive relationships with mentors from other institutions and/or countries will prevent the possibility of leading to dependence between mentee and mentor within a single institution. This review aims to investigate different forms of mentorships, with a specific interest in early career support, long-distance mentorship and opportunities for underrepresented minorities in surgery.
Is careers work white? A collaborative research project with minority ethnic students of career development practice
Authors: Frigerio Gill , Chen Lassie , McArthur Marni , Mehta Nishi
Published: October 2022

The diversity of the career development profession plays a critical part in the sector’s ability to challenge inequality. At the same time, the awarding gap between the proportions of white students and UK minority ethnic students being awarded a higher degree classification in UK universities (where many career development practitioners train) is well documented. This article reports on a study devised to explore the experiences of UKME students on one institution’s career development courses and at work, in relation to their race and culture. It outlines the challenges and findings of the study that relate to the curriculum for trainee career development professionals, as well as pedagogic practices in professional development programmes. The article concludes with considerations for further decolonial practices for career development work.
Towards a critical realist theory of labour market information
Authors: Staunton Tom
Published: October 2022

Despite the importance of Labour Market Information (LMI) to career practice, there is a surprising lack of theory that focuses on LMI and how it supports career guidance. Building on previous work, especially by Staunton and Rogosic (2021), this paper will argue for a move toward a critical realist account of LMI that sees it as historically and politically positioned, rather than objectively verifiable on its own terms. This opens up new possibilities for how career practitioners can make use of LMI and fresh avenues for theory and research.
Agents for change: Reimagining emancipatory career guidance practices in Scotland
Authors: Meldrum Susan
Published: October 2022

This article explores how individual and group work models of career development practice could be adapted and redesigned to be more effective at empowering people to overcome barriers and inequalities. It is set in the context of the ongoing major review of career services in Scotland and examines the possible benefits and challenges if such emancipatory practices are embedded into future service delivery.
Analysis of dynamic stability for wind turbine blade under fluid-structure interaction
Authors: Zhang Jianping , Chen Wenlong , Zhou Tingjun , Wu Helen , Hu Danmei , Ren Jianxing
Published: October 2022

Aiming at improving vibration performance of 1.5 MW wind turbine blades, the theoretical model and the calculation process of vibration problems under geometric nonlinearity and unidirectional fluid-structure interaction (UFSI) were presented. The dynamic stability analysis on a 1.5 MW wind turbine blade was carried out. Both the maximum brandish displacement and the maximum Mises stress increase nonlinearly with the increase of wind speed. The influences of turbulent effect, wind shear effect and their joint effect on displacement and stress increase sequentially. Furthermore, the stability critical curves are calculated and analyzed. As a result, the stability region is established where the wind turbine blade can run safely.
Fault diagnosis of gearboxes using wavelet support vector machine, least square support vector machine and wavelet packet transform
Authors: Heidari Mohammad , Homaei Hadi , Golestanian Hossein , Heidari Ali
Published: October 2022

This work focuses on a method which experimentally recognizes faults of gearboxes using wavelet packet and two support vector machine models. Two wavelet selection criteria are used. Some statistical features of wavelet packet coefficients of vibration signals are selected. The optimal decomposition level of wavelet is selected based on the Maximum Energy to Shannon Entropy ratio criteria. In addition to this, Energy and Shannon Entropy of the wavelet coefficients are used as two new features along with other statistical parameters as input of the classifier. Eventually, the gearbox faults are classified using these statistical features as input to least square support vector machine (LSSVM) and wavelet support vector machine (WSVM). Some kernel functions and multi kernel function as a new method are used with three strategies for multi classification of gearboxes. The results of fault classification demonstrate that the WSVM identified the fault categories of gearbox more accurately and has a better diagnosis performance as compared to the LSSVM.
Experimental and numerical studies of the effects of a rail vibration absorber on suppressing short pitch rail corrugation
Authors: Qian W. J. , Y. F. Wu , Chen G. X. , Ouyang H.
Published: October 2022

The effects of a rail vibration absorber on suppressing short pitch rail corrugation are studied. Firstly, a rail vibration field test is carried out to analyze the vibration response of the rail with and without the vibration absorbers. Secondly, based on the hypothesis that friction-induced self-excited vibration of a wheel-rail system causes rail corrugation; two finite element models of a wheel-rail system and a wheel-rail-absorber system are established and analyzed. Both sets of rail vibration test results and theoretical results show that the rail absorbers can effectively reduce the friction-induced self-excited vibration of the wheel-rail system in the frequency range of 200-800 Hz, which corresponds to frequencies of short pitch rail corrugation. This may be a main reason that the rail vibration absorber can suppress the formation of short pitch rail corrugation.
Bearing fault diagnosis based on intrinsic time-scale decomposition and improved Support vector machine model
Authors: Sheng Jinlu , Dong Shaojiang , Liu Zhu
Published: October 2022

In order to achieve the bearing fault diagnosis so as to ensure the steadiness of rotating machinery. This article proposed a model based on intrinsic time-scale decomposition (ITD) and improved support vector machine method (ISVM), so as to deal with the non-stationary and nonlinear characteristics of bearing vibration signals. Firstly, the feature extraction method intrinsic time-scale decomposition (ITD) is used and the energy entropy are extracted so as to process the vibration signal in this paper. Then, the local tangent space alignment (LTSA) method is introduced to extract the characteristic features and reduce the dimension of the selected entropy features. Finally, the features are used to train the ISVM model as to classify bearings defects. Cases of actual were analyzed. The results validate the effectiveness of the proposed algorithm.