bluuebunny/crossref_metadata_2025 huggingface dataset:
Benefits of remote control on the railway lines
Authors: Křižan Lukáš , Vojtek Martin
Published: November 2023

Railway transport in the Czech Republic largely uses transit corridors, which are significantly more used than the rest of the railway network. This assumption leads to an increase in the safety of these lines and gradual double-tracking. All these aspects lead to the fact that the given lines are controlled from dispatching centres, while other lines are controlled from regional dispatch offices. The above parameters also apply to other non-corridor but still busy lines. It can therefore be concluded that this trend of remote control brings significant operational and technological advantages. The most visible benefit is the personnel saving of operational employees, but another significant benefit, which is not so obvious at first glance, is the benefit of a more efficient organization and management of railway transport. This impact brings the effect of smoother traffic, which manifests itself in a lower burden on the environment, thanks to fewer train starts and stops, or there will be no complete stop, but only a reduction in train speed. Furthermore, this influence is evident in the more frequent overtaking of trains not in railway stations, but in inter-station sections. All these advantages lead to an increase in an important operational indicator, which is the throughput of the track.
Artificial intelligence in operational applications of railway infrastructure manager
Authors: Šrámek Přemysl , Široký Jaromír , Vojtek Martin
Published: November 2023

The main goal of this article is to present the possibility of using artificial intelligence in operational application of railway infrastructure manager. Railway 4.0 can be controlled fully digitally – operational applications based on the artificial intelligence can optimize the technology of railway traffic control. Thereafter, a wide range of equipment could be controlled by application through a secure interface.
Does transperineal ultrasound predict the risk of perineal trauma in women with term pregnancy? A prospective observational study
Authors: Xodo Serena , Trombetta Giulia , Morassutto Caterina , Baccarini Giovanni , Celante Lisa , Driul Lorenza , Londero Ambrogio P
Published: November 2023

Purpose: This study was conducted to evaluate the prevalence of perineal trauma during childbirth and to assess the correlations of the pelvic floor dimensions and fetal head station with obstetric trauma in a prospectively recruited cohort of women.Methods: The study included women with a gestational age of at least 37 weeks, who were carrying a single fetus in a cephalic presentation. Transperineal ultrasound (TPU) was performed prior to the onset of labor or labor induction. The purpose was to measure the anteroposterior diameter (APD) of the levator ani muscle (LAM) and the angle of progression, at both rest and maximum Valsalva maneuver. The head-perineum distance was assessed only at rest.Results: A total of 296 women were included. Of the 253 women who delivered vaginally, 19% (48/253) experienced no perineal trauma, 18.2% (46/253) received an episiotomy during childbirth, 34.4% (87/253) sustained a first-degree laceration, 25.3% (64/253) had a second-degree laceration, and 3.2% had a third- or fourth-degree laceration (8/253). Women with episiotomy had a significantly shorter median APD under Valsalva than women without perineal trauma. Furthermore, women with LAM coactivation (identified by a negative difference between the APD at Valsalva and the APD at rest) were approximately three times more likely to undergo an operative vaginal delivery and over five times more likely to sustain a third- or fourth-degree tear during childbirth than women who exhibited normal relaxation of the LAM during the Valsalva maneuver.Conclusion: TPU may predict the risk of perineal trauma in women with term pregnancy during childbirth.
Learning Styles and Cultural Differences: A comparative study of cultural differences in Austrian and Mongolian Students
Authors: Khaskhuu Ariunaa , Chimed-Ochir Nyambayar
Published: November 2023

This study shows the relationship between the types of cultural differences and learning styles of Kolb's learning model. Although several cross-cultural studies on learning styles suggest that learning styles may differ from one culture to another, the question of which cultures are associated with which learning styles and abilities has been less explored. This study focuses on the empirical findings of comparative studies on past cross-cultural differences in learning styles and considers how the propositions generated by the theory tests may reflect their past empirical findings. This research shows that culture is associated with specific learning styles and abilities.
Innovative Teaching Methodology for Developing Digital Competence in Future Engineering Pedagogues
Authors: Расулова Насибахон
Published: November 2023

This article focuses on the development of a methodology aimed at fostering the digital competence of future engineering pedagogues through the utilization of digital tools. With the digital transformation of the education system, it becomes imperative to adapt the methods of working with educational stakeholders. The creation of a digital educational environment involves equipping organizations with modern equipment and advancing digital services and content. Future engineering pedagogues require digital competencies to effectively integrate digital technologies into the educational process. This article presents a concept for the methodology, which involves the design of practical tasks at three levels: basic, intermediate, and advanced. The results of an experiment conducted with students demonstrate that the proposed methodology yields higher grades compared to traditional methods. The findings underscore the importance of empowering engineering pedagogues with digital competences to prepare students for the digital era.
Influence Rate Evaluation by Students’ Opinion: University, Library, Courses and Professors
Authors: Tudevdagva Uranchimeg , Delgerkhuu Narantsatsral , Osorkhuu Gansaikhan , Davaagombo Batdorj , Galbadrakh Yeruulbat , Sergelen Serjmyadag
Published: November 2023

This paper describes a cooperative study of university lecturers with a focus on figuring out influence factors of students’ achievements in higher education. The evaluation survey is applied as the main method for research. Several lecturers (research team) who teach different courses in the university together developed influence factors in the form of survey questions, which are divided into four core groups: university, library, courses, and professors. The research team plans to collect as much data periodically from all universities in the country which is open to supporting this study. This paper showed the analyses of the first step of the study. 291 students from eight different universities voluntarily sent responses to an online survey.The collected data is processed by structure-oriented evaluation (SURE) model and by standard statistic function. The SURE evaluation score was calculated as 0.88 which we can read that all defined influence factors received evaluation scores from students with very high positive answers. The statistic maximum scores emphasized some factors that influence a lot to students’ achievement and students confirmed by their responses that some factors are very important for them. Further statistic ANOVA test was made for the case of the university group with 13 factors.For the ANOVA test, the null hypothesis. H0 – Null hypothesis stands for no difference between groups. No influence of study years on evaluation scores. By the ANOVA test, the null hypothesis isn’t proven. This concludes first step analyses as not significant statistically. Therefore, the researchteam needs to continue data collection and may apply some other statistical methods to compare the first results.
Developing Information Competences of the Students in Technical Direction with Helping the Technology of “Network Boomerang” Principles
Authors: Zaripova Dilnoza
Published: November 2023

The article discusses ways of increasing students' engagement, motivation and participation in higher education using "Network Boomerang" technology, as an example of pre-service IT teacher training. With the onset of the global pandemic, the role of digital technologies has significantly increased, highlighting the importance of digital transformation, particularly for developing countries, including Uzbekistan. Indeed, digital transformation has the potential to further modernize society and integrate the national economy into global processes. In this context, within the framework of ongoing reforms and the Development Strategy of the New Uzbekistan for the next five years, special attention is being given to the digitization of key areas of activity and the establishment of a genuine information society in the country.
THE CURRENT STATE AND PROSPECTS OF THE DEVELOPMENT OF NOVIKOV GEARING
Authors: Korotkin V. I.
Published: November 2023

The article gives a brief overview of the results of many years of theoretical and experimental studies of Novikov’s gear wheels, including those obtained under the guidance of the author by the laboratory of the Research Institute of Mathematics, Mechanics and Informatics named after I. I. Vorovich of the Southern (former Rostov) State University, shows the application in practice and the main promising directions for the development and improvement of these progressive gear wheels.
THE MACHINE WITH NUMERICAL CONTROL
Authors: Mikaeva S. A. , Mikaeva A. S.
Published: November 2023

The work is devoted to the development and assembly of a numerically controlled machine. The authors describe the design of the working model of the machine based on Arduino Mega 2560 and stepper motors. The program used in this project was Coreldraw 7, in which almost all the details were drawn. The bearing holders were designed in the SketchUp 2017 Make 3D modeling program. The finished drawings were processed in the ArtCAM program to obtain a G-code that was opened using the Mach3 control program. The authors gave an assessment of the future device, the process of manufacturing and assembling the machine. The economic assessment of the model and the machine for serial production is given. The ecological and aesthetic evaluation of the machine is described.
THE ACCURACY OF ESTIMATES OF THE PROCESS REPRODUCIBILITY INDICES WITH CONSIDERING THE NUMBER OF EFFECTIVE DEGREES OF FREEDOM OF STANDARD DEVIATION
Authors: Borbatc N. M. , Shkolina T. V.
Published: November 2023

The issue of determining the accuracy of estimates of the process capability indices Cp and Cpk based on their standard deviations is considered. At the same time, since the capability indices can only be used under conditions of a statistically stable state of the process, which from a practical point of view means the need to maintain appropriate Shewhart control charts, the values Ϭ of the indices of Cp and Cpk should be determined based on k samples (data groups), each volume n and using an estimate of the standard deviation of the process according to the studied quality characteristic Ϭ, found on the basis of intragroup variability. However, in this case, it is necessary to take into account the number of effective degrees of freedom of the estimate Ϭ, since this directly affects the values σ of the standard deviations of the estimates Cp and Cpk.
FUNDAMENTALS OF THE THEORY OF OSCILLATORY PROCESSES IN VIBRATION DEVICES MOUNTED ON ROAD, CONSTRUCTION AND TRANSPORT VEHICLES. LECTURE 11
Authors: Nizhegorodov A. I.
Published: November 2023

This article presents materials of the 10th lecture on the subject “Theory of load-lifting, transport, construction and road equipment and facilities”. This lecture covers theoretical issues concerned with the fundamentals of a theory of oscillations of linear and nonlinear systems on the examples of horizontal platforms in order to expand the students’ knowledge obtained when studying the course of theoretical mechanics. The lecture is divided into the following sections: periodic and non-periodic oscillations, vibration velocity and vibration acceleration, modulated oscillations, linear (harmonic) and non-linear oscillations, as well as the use of vibration devices in load-lifting, transport, construction and road equipment and facilities.
PHYSICO-CHEMICAL AND MATHEMATICAL DESCRIPTION OF DIFFUSION PROCESSES IN THE WELDING OF POWDER MATERIALS
Authors: Gadalov V. N. , Gubanov O. M. , Petrenko V. R. , Filonovich A. V.
Published: November 2023

Diffusion processes are considered and their physico-chemical and mathematical description of diffusion processes in welding of powder materials is presented.
MODELING OF THE INFLUENCE OF CUTTING MODE PARAMETERS ON THE DURABILITY OF REPLACEABLE CUTTING PLATES WHEN PROCESSING STEAM TURBINE PARTS MADE OF HEAT-RESISTANT CORROSION-RESISTANT STEEL
Authors: Galkin M. G. , Smagin A. S. , Yakimov K. G.
Published: November 2023

During the design of the machining technology, one of the important tasks is the choice of cutting modes, at the preliminary stage of the shaping process, which provide a given durability of replaceable cutting plates. In this case, when describing most of the design procedures of the machining process, there are problems associated with the algorithm for choosing the solution method and the response function at the appropriate processing stage. In this paper, as an algorithm for solving the problem, it is proposed to use the methodology of extreme planning of the experiment, which allows to obtain a mathematical model of the investigated multifactorial process. During the implementation of this algorithm in real production conditions, based on a priori information, the research area was selected and the levels of factors with intervals of their further variation in this area were established. Next, a factorial experiment was conducted and its results were processed on the basis of a linear polynomial that takes into account linear effects and interaction effects. As a result of checking the polynomial, a confidence interval was determined for all regression coefficients from three parallel experiments with the same values of factors. At the second stage, the adequacy of the mathematical model itself was evaluated according to the Fisher criterion. Finally, using the logarithm mechanism, a transition was made from the encoded values of the factors in the mathematical model to their natural values and a power function was obtained describing the effect of the cutting mode on the durability of a replaceable tungsten carbide carbide-based carbide plate. The conducted research makes it possible to speed up the procedure for assigning processing modes of workpieces at the preliminary stage in the conditions of existing production, to ensure a given tool durability, which allows to increase the productivity of the shaping process. This technique is the subject of consideration in this work.
MONITORING FEATURES OF FORMING THE CONNECTION OF THIN-WALLED STRUCTURES MADE OF TITANIUM ALLOYS BY DIFFUSION WELDING (REVIEW)
Authors: Gadalov V. N. , Gubanov O. M. , Petrenko V. R. , Filonovich A. V.
Published: November 2023

The results of the analysis with an assessment of the features of the formation of products from thin-walled sheet structures made of titanium alloys using diffuse welding (DS) technologies are presented. The analysis of the development of low- and high-temperature deformation in the contact zone at the DS of titanium thin-walled three-layer structures of the T-type is carried out, taking into account the ratio of the thickness of the welded work pieces and their initial microstructure. The estimated data on the influence of the technological parameters of the DS and the micro-structural state of the welded titanium billets on the kinetics of the development of the formation of the welded joint and its mechanical properties are given.
DRIVE COUPLING WITH ELASTIC RODS OF CIRCULAR CROSS-SECTION: CALCULATION OF PARAMETERS DETERMINING ITS DIMENSIONS
Authors: Zyablikov V. M.
Published: November 2023

A method is proposed that allows calculating the main parameters that determine the overall dimensions of the coupling, based on a given value of torsional stiffness, transmitted torque, the selected material of the rods and their diameter. At the same time, their strength is ensured.
STATISTICAL AND DYNAMIC INDICATORS OF THE AUTOMATED FORKLIFT CONTROL SYSTEM
Authors: Semenov D. A. , Vorontsov I. I.
Published: November 2023

One of the key trends in the development of forklifts nowadays is the process of unmanned control, which will be discussed in the given article. At the beginning of the research the constructive component of the forklift will be considered, the conditions of the machine working in the premises will be noted, after that the basic parameters of the forklift constant and variable value control system will be described, the algorithm of the forklift automation process and its visualization with the help of a digital prototype will be formulated. At the end of the scientific research, the theoretical and practical significance of the work will be given and a corresponding conclusion about further modernization of the forklift will be made.
THE CALCULATION OF A MULTISTAGE TURBOMOLECULAR VACUUM PUMP
Authors: Fomin M. V. , Fomina I. M.
Published: November 2023

The dependencies of the main characteristics of a turbomolecular pump operating in the molecular regime of gas flow on the number of stages and their geometrical parameters are considered. Programs developed using the Monte Carlo method in a three-dimensional formulation, taking into account the influence of radial and axial clearances, make it possible to trace the full trajectory of each molecule through the entire flow path of the pump, as well as calculate the gas evolution flows. Determining the probabilities of molecules passing in the forward and reverse directions made it possible to establish the influence of the geometric parameters of the stages and their location in the flow path on the main characteristics of the pump.
ASSESSMENT OF DAMAGE TO PUMP PARTS DRILLING EQUIPMENT IN THEIR OPERATION MODE
Authors: Gadalov V. N. , Gubanov O. M. , Filonovich A. V.
Published: November 2023

Information is presented on the assessment of damage to pump parts of drilling equipment in their operation mode. To identify the features of wear and damage to parts, the structure, phase composition, microhardness and internal stresses were investigated, valve parts (seat and plate) were examined before and after operation.
APPROACH TO ENSURING COST-EFFECTIVENESS OF DESIGN WORKS FOR THE ENTIRE CYCLE OF TECHNICAL PREPARATION OF PRODUCTION BY CUTTING
Authors: Kolybenko E. N.
Published: November 2023

It is fundamentally impossible to transform the knowledge of technical: design checkpoint, technological CCI (OP) of production by cutting by the functions of control elements: systematization, formalization, unification, grouping for the transition to an information deterministic technology for solving practice problems throughout the cycle of a high level of automation with only elements (means) of integrating the design element base. You need your complete composition of the main elements of the integration of the technological element base of organic in form, content and sequence of knowledge transformation. By means of the technological element base, the hierarchical structure of the knowledge base (CCI (OP), KPP) was determined in seven levels of the structure of its basic objects of functionally different types. All basic knowledge objects are defined by the functions of classical knowledge of the organization of complex systems: quantity, quality, informational similarity, dimension. This knowledge in the in-formation technology of solving technical and design problems is distributed in two directories: organization systems – in the main operations of the technological direction; control systems are – in two aux-iliary design direction operations. It is fundamentally important for each area to determine its composition of updated methods, methods, tools, algorithms, operations for solving the necessary problems and provide them with the left-hand properties of high economic efficiency according to the functions of achieving knowledge and flexibility.
THE EFFECT OF SYNERGETIC PROCESSES DURING ION-VACUUM MODIFICATION OF CUTTING TOOLS ON THE CONCENTRATION OF MODIFYING ELEMENTS IN THE SURFACE LAYERS OF METALS
Authors: Zubarev Yu. M. , Kruglov A. I. , Vaganov V. V.
Published: November 2023

Increasing the productivity of the machining process and increasing the wear resistance of blade cutting tools when processing various complex steels and alloys is an urgent task of modern machine-building production. Ion-vacuum modification (hereinafter referred to as IVM) of the working surface of the cutting tool can significantly improve its performance. To increase the efficiency of the IVM, a synergetic approach can be successfully applied, which makes it possible to more fully represent the physics of this process.
MATHEMATICAL MODEL AND DYNAMICS OF A PILOT CONTROL PRESSURE-REDUCING VALVE
Authors: Trukhanov K. A.
Published: November 2023

Energy consumption is currently on the rise. To control large energy flows, larger sizes of actuators and control mechanisms are required.One of the main control elements of the system is the pressure regulator. A pressure regulator or pressure reducing valve (RV) is a device designed to reduce and continuously maintain a certain, preconfigured, pressure level («after itself»), which is different from the nominal one. High requirements are imposed on the operation of the RV to maintain the set pressure value, such as: high speed, no overshoot and static error, since the presence of these dynamic properties in the RV can cause the «start of disasters». Modern methods for the development and analysis of technical systems are based on the widespread use of mathematical models based on detailed knowledge of the processes and phenomena occurring in the systems under consideration. The use of a mathematical model is of great and urgent importance – it allows not to carry out expensive and costly physical experiments both in terms of time and money. The results obtained in the course of computer simulation can be used to optimize systems, determine operating modes and causes of possible failures. The article describes the principle of operation and the scheme of the pressure reducing valve of indirect action. The developed mathematical model of an indirect pressure reducing valve is presented. With the help of the created mathematical model, the dynamic characteristics of the indirect pressure reducing valve were analyzed depending on the change in its design parameters. The limit of stability of the pressure reducing valve is determined, when the values of which are exceeded, self-oscillations are observed in the system of the pressure reducing valve. Recommendations are given for choosing and setting the value of pressure p2 at the outlet of the reducing controlled valve. The scientific novelty of the work should include the created mathematical model of a pressure reducing controlled valve of indirect action and the results of the analysis of its dynamic properties.
MOBILE ROBOTS FOR FEED PUSHING
Authors: Shekhovtsov V. V. , Potapov P. V. , Iskaliev A. I. , Zaitsev D. D. , Ilenko M. E.
Published: November 2023

This paper presents analysis of design features and functionality of mobile feed pushing robots presented at the market of equipment for cattle farming. Objects of the analysis were the structure and the design of the working body, the chassis and the drivetrain with control elements of mobile devices which don’t require significant works at the farm territory and in rooms. Mobile robots with the rotating working body made as cylindrical or conical vehicle case with or without separate drive, with the feed-screw working are described. Advantages and disadvantages of various designs of mobile feed-pushing robots are defined. As the analysis results main tendencies of development of mobile feed-pushing are proposed.
STUDY OF THE CHARACTERISTICS OF THE EMERGENCY LIGHT
Authors: Bayushkina I. A. , Gorbunov A. A. , Mikaeva S. A.
Published: November 2023

This work considers emergency lighting, as well as the features, technical characteristics of a lamp designed for emergency lighting of public premises. In any room, building or building, in addition to the main lighting required for effective operation, an auxiliary type is installed, the adjustment and operation of which is carried out using technical, legislative and sanitary standards and requirements. Emergency lighting is necessary to provide lighting conditions for the continuation of work in the premises and in the open space in cases where the absence of artificial lighting can cause severe consequences for people, production processes, disrupt the normal functioning of the life centers of the enterprise and service centers for mass consumers. The emergency fluorescent battery light LBA3923 was chosen as the test sample. Fluorescent lamps of this lighting fixture have an automatic turnon mode when the mains operating voltage is turned off 230 V AC.
COMBINED EXTRUSION OF GLASSES WITH A CONICAL BOTTOM. EXPERIMENTAL VERIFICATION OF THEORETICAL FORMULAS IN REVERSE EXTRUSION
Authors: Vorontsov A. L. , Lebedeva D. A.
Published: November 2023

Cold reverse extrusion of cups with a conical bottom made of hardening material is considered. The methods for performing specific calculations of the deforming force for various geometric parameters of free and constrained extrusion are demonstrated in detail. Comparison with the experimental data obtained by extruding aluminum alloy AD1 shows the high accuracy of the derived calculation formulas.
RISK MANAGEMENT DURING AFTER-SALES MAINTENANCE OF GAS TURBINE ENGINES
Authors: Bezjazychnyi V. F. , Smirnov A. V. , Sarov A. A. , Kalugin S. S.
Published: November 2023

The justification of necessity and estimated determination of quality indicators of after-sales maintenance of gas turbine engines during the warranty period are given associated with engine transportation, engine’s units and parts transportation and links with determination of construction machinability relating to repair work.
ANALYSIS WITH ASSESSMENT OF THE CONDITION OF THE RAIL STEEL AT VARIOUS STAGES OF ITS OPERATION
Authors: Gadalov V. N. , Petrenko V. R. , Filonovich A. V. , Plyakin A. S.
Published: November 2023

Studies on the influence of defects of various nature on the mechanical and operational properties of rail steel are presented. The results of studying and analyzing the condition of rail steel at various stages of its operation, as well as the reasons for removing rails from rolling stock, are considered. The increased interest and increase in information in this area is due both to the practical significance associated with the increasing requirements for the reliability of rails in conditions of high traffic intensity, and the increase in loads on the axles of rolling stock, increasing speeds and weight of trains, in severe conditions of the upper structure of the track in various climatic conditions, and the desire for a deeper understanding of the fundamental knowledge of physical metallology.
METHODS FOR CALCULATING FREE OSCILLATIONS OF BEAM SYSTEMS
Authors: Radin V. P. , Chirkov V. P. , Poznyak E. V. , Novicova O. V.
Published: November 2023

Some methods for calculating free oscillations of mechanical systems with distributed parameters are described with the implementation of these methods on a concrete example. Systems may include point masses and springs. Methods of direct integration of the free oscillation equation, the method of initial parameters and the finite element method are considered. Recommendations to algorithm and calculations of natural frequencies and modes are given. For the finite element method, the influence of the number of elements on the accuracy of determining the spectrum of natural oscillations is investigated.
COMBINED EXTRUSION OF GLASSES WITH A CONICAL BOTTOM. EXPERIMENTAL VERIFICATION OF THEORETICAL FORMULAS IN TRADITIONAL EXTRUSION WITHOUT HARDENING
Authors: Vorontsov A. L. , Lebedeva D. A.
Published: November 2023

The necessity of experimental verification of the accuracy of the theoretical calculation of the force of traditional extrusion of glasses with a conical bottom is substantiated. The extrusion of a non-hardening material simulating hot deformation is considered. The methods for performing specific calculations of the deforming force for various extrusion geometric parameters, both for free and constrained extrusion, are demonstrated in detail. Comparison with the obtained experimental data shows the high accuracy of the derived calculation formulas.
COMBINED EXTRUSION OF GLASSES WITH A CONICAL BOTTOM. EXPERIMENTAL VERIFICATION OF THEORETICAL FORMULAS FOR EXTRUSION WITH BENDING
Authors: Vorontsov A. L. , Lebedeva D. A.
Published: November 2023

Cold extrusion with bending of glasses with a conical bottom made of a hardening material is considered. The methods for performing specific calculations of the deforming force for various geometric parameters of free and constrained extrusion are demonstrated in detail. Comparison with the experimental data obtained by extruding aluminum alloy AD1 shows the high accuracy of the derived calculation formulas.
Documenting students’ conceptual understanding of second language vocabulary knowledge: a translanguaging analysis of classroom interactions in a primary English as a second language classroom for linguistically and culturally diverse students
Authors: Tai Kevin W. H.
Published: November 2023

This article aims to build on prior research on translanguaging to document how linguistically and culturally diverse students in a primary ESL classroom mobilise a wide range of multilingual and multimodal resources to demonstrate their conceptual understanding of second language (L2) vocabulary knowledge during classroom interactions. The classroom interactional data will be analysed using Multimodal Conversation Analysis. The analyses of the classroom interactional data will be triangulated with the teacher’s video-stimulated-recall-interview data, which is analysed using Interpretative Phenomenological Analysis in order to analyse the teacher’s reflections on students’ use of translanguaging to externalise their thought processes. The findings demonstrate that students’ use of translanguaging resources allows for an externalisation of thinking processes which offers visible output for inspection by the teacher. The findings challenge the conventional perspective of L2 acquisition, which commonly involves comparing the learning outcomes of experimental and control groups to evaluate their L2 progress and development. I argue that students’ translanguaging practices can be used as interactional resources for them to visualise their conceptual understanding in progress, which offers valuable diagnostic information for the teacher to assess students’ current knowledge states in the learning process. The findings of this study can provide a comprehensive picture of the process of L2 vocabulary learning as an embodied activity, indicating the need for researchers to conduct fine-grained analysis of students’ translanguaging practices when documenting evidence of students’ L2 learning.
Einleitung: Das Fremde im Eigenen – das Eigene im Fremden. Jüdisches biographisches Schreiben über Andere
Authors: Jurewicz Grażyna , Schneider Ulrike
Published: November 2023

In terms of historiographical potential and literary value, depictions of the lives of others are considered inferior to autobiographies. One finds autobiographies, which promise to provide exclusive insights into the historical inner worlds, epistemically more revealing. While their study has become a very important part of Jewish Studies, investigations into the life stories of others represent a notable research gap. This issue takes this remarkable bias in the perception of the two genres within Jewish Studies as its starting point. The contributions gathered here interrogate historical examples of biographical narrative with the aim of unlocking its historiographical potentials and thus highlighting the relevance of biographical writing for the study of Jewish cultures.
Die Pionierinnen der Pionierin. Zu Gerda Lerners »The Grimké Sisters from South Carolina. Pioneers for Women’s Rights and Abolition«
(1967/2004)
Authors: Kallenberg Vera
Published: November 2023

This article traces the history of the double biography »The Grimké Sisters« (1967/2004) by Gerda Lerner, an American Jewish historian who, as a Viennese Jew, escaped Nazi Europe for the United States in 1939. Focusing on the history of the making of »The Grimké Sisters«, the essay analyzes Lerner’s book as ›life writing‹. It demonstrates Gerda Lerner‘s (1920–2013) becoming scholarly persona in the context of her self-interpretation of the Grimké Sisters as her own figures of identification and role model. By showing the nexus of African Americans’ rights and women’s rights in the Grimké sisters’ engagement, Gerda Lerner processed the own in the foreign. In doing so, Lerner’s interest in white abolitionism and the women’s rights movement in the 19th century U.S. echoes her multiple outsider and persecution experiences as a Jewish emigrant, left-wing feminist, and pioneer in Women’s history in the 20th century.
Im Zwiespalt der Erinnerungen – Die Vereine ehemaliger Hamburger in Israel
Authors: Matthies Jana
Published: November 2023

In Hamburg, as elsewhere, debates about aspects of remembering the Shoah have been and are being conducted not only locally, but across national and other borders. People with a personal history of persecution and a connection to the city have a special position in these debates. The same applies to the discussions in the 1980s and 1990s in which the associations of former Hamburg residents in Israel spoke out – and were usually heard. Initially, two groups existed, one in Jerusalem, one in Tel Aviv, which merged in 1992 and had close contact with Hamburg. They are described here both as organisations in Israel and as actors in remembrance politics of the city. This essay elaborates on their commitment at the example of exhibition projects on Hamburg’s Jewish history.
The Eisenstein cycles and Manin–Drinfeld properties
Authors: Banerjee Debargha , Merel Loïc
Published: November 2023

Let Γ be a subgroup of finite index of

SL
2

⁡

(
𝐙
)

{\operatorname{SL}_{2}(\mathbf{Z})}

.
We give an analytic criterion for a cuspidal divisor to be torsion in the Jacobian

J
Γ

{J_{\Gamma}}

of the corresponding modular curve

X
Γ

{X_{\Gamma}}

. Our main tool is the explicit description, in terms of modular symbols, of what we call Eisenstein cycles. The latter are representations of relative homology classes over which integration of any holomorphic differential forms vanishes.
Our approach relies in an essential way on the specific case

Γ
⊂

Γ
⁢

(
2
)

{\Gamma\subset\Gamma(2)}

, where we can consider convenient generalized Jacobians instead of

J
Γ

{J_{\Gamma}}

.
We relate the Eisenstein classes to the scattering constants attached to Eisenstein series.
Finally, we illustrate our approach by considering Fermat curves.
Positive rigs
Authors: Menni Matías
Published: November 2023

A positive rig is a commutative and unitary semi-ring A such that

1
+
x

{1+x}

is invertible for every

x
∈
A

{x\in A}

.
We show that the category of positive rigs shares many properties with that of K-algebras for a (non-algebraically closed) field K.
In particular, it is coextensive and, although we do not have an analogue of Hilbert’s basis theorem for positive rigs,
we show that every finitely presentable positive rig is a finite direct product of directly indecomposable ones.
We also describe free positive rigs as rigs of rational functions with non-negative rational coefficients, and we give a characterization of the positive rigs with a unique maximal ideal.
“As if I were otherwise” metapragmatics of ego-splitting and virtualization, nanchatte!
Authors: Inoue Miyako
Published: November 2023

Nanchatte is a Japanese gag expression, whose literal English translation could be “I have just completed the saying of something like what I have just said.” Its meaning partially overlaps with English expressions such as “Just kidding,” or “I am just saying.” Its felicitous execution is often intended to “crack up” listeners, to take the edge off an impression of formality, arrogance, aggression, austerity, or bluntness, to break the ice, mitigate face-threat or potential embarrassment, keep meaning ambiguous, or other similar performative effects. Positioned right after the completion of the preceding utterance, nanchatte performs a self-quoting speech act, in which it reflexively and retroactively turns one’s own utterance as reporting speech into reported speech. Ex post facto reframes the utterance from a narrating event to a narrated event, which then turns the speaker from the subject of the utterance to the object in the real-time temporal process of the utterance, splitting and doubling the subject “I” and the world it inhabits between the actuality and the virtuality. By doing so, nanchatte structurally produces the space of non-position-taking. As frivolous as it might be, nanchatte’s structural condition warrants a serious semiotic analysis. Drawing on Husserl’s concepts of neutrality modification and ego-splitting, this essay will discuss how and what kind of political subjectivity could be produced in the quoted space afforded by nanchatte. I proposes the concept of virtualization as a performative effect of nanchatte. As I will detail below, nanchatte as a self-quoting operation – that is, “I” quotes what “I” have just said – unsettles other familiar binaries in the illimitable movement of the virtual and the actual, and this paper considers its broader political implications.
Orders on free metabelian groups
Authors: Wang Wenhao
Published: November 2023

A bi-order on a group 𝐺 is a total, bi-multiplication invariant order.
A subset 𝑆 in an ordered group

(
G
,
⩽
)

(G,\leqslant)

is convex if, for all

f
⩽
g

f\leqslant g

in 𝑆, every element

h
∈
G

h\in G

satisfying

f
⩽
h
⩽
g

f\leqslant h\leqslant g

belongs to 𝑆.
In this paper, we show that the derived subgroup of the free metabelian group of rank 2 is convex with respect to any bi-order.
Moreover, we study the convex hull of the derived subgroup of a free metabelian group of higher rank.
As an application, we prove that the space of bi-orders of a non-abelian free metabelian group of finite rank is homeomorphic to the Cantor set.
In addition, we show that no bi-order for these groups can be recognised by a regular language.
Virtual planar braid groups and permutations
Authors: Naik Tushar Kanta , Nanda Neha , Singh Mahender
Published: November 2023

Twin groups and virtual twin groups are planar analogues of braid groups and virtual braid groups, respectively.
These groups play the role of braid groups in the Alexander–Markov correspondence for the theory of stable isotopy classes of immersed circles on orientable surfaces.
Motivated by the general idea of Artin and recent work of Bellingeri and Paris [P. Bellingeri and L. Paris, Virtual braids and permutations, Ann. Inst. Fourier (Grenoble)
70 (2020), 3, 1341–1362], we obtain a complete description of homomorphisms between virtual twin groups and symmetric groups, which as an application gives us the precise structure of the automorphism group of the virtual twin group

VT
n

\mathrm{VT}_{n}

on

n
≥
2

n\geq 2

strands.
This is achieved by showing the existence of an irreducible right-angled Coxeter group

KT
n

\mathrm{KT}_{n}

inside

VT
n

\mathrm{VT}_{n}

.
As a by-product, it also follows that the twin group

T
n

\mathrm{T}_{n}

embeds inside the virtual twin group

VT
n

\mathrm{VT}_{n}

, which is an analogue of a similar result for braid groups.
Anti-hiatus tendencies in Spanish: rate of occurrence and phonetic identification
Authors: Herrero de Haro Alfredo , Alcoholado Feltstrom Antonio
Published: November 2023

Spanish normative grammar considers any two-vowel combination of /e/, /a/, and /o/ as a hiatus, accepting that they can be pronounced as a diphthong in lower basilects and/or informal registers. This article analyzes speeches of educated speakers, performing an acoustic analysis of 60 segmental and suprasegmental features in 493 vowel sequences. Linear mixed-effects models suggest that two-vowel sequences of /e/, /a/, and /o/ are pronounced as diphthongs in 77.27 % of cases; suprasegmental features (especially duration) are the most reliable cues to distinguish a hiatus from a diphthong in Spanish. These results call for a re-examination of diphthong classification in Spanish.
Cimifugin inhibits adipogenesis and TNF-α-induced insulin resistance in 3T3-L1 cells
Authors: Deng Xiang , Liu Zhenmin , Han Siqi
Published: November 2023

To investigate the effects of cimifugin on adipogenesis and tumor necrosis factor (TNF-α)-induced insulin resistance (IR) and inflammation in 3T3-L1 adipocytes. 3T3-L1 adipocytes were treated with 3-isobutyl-1-methyl-xanthine, dexamethasone, and insulin or cimifugin and then Oil Red O staining and intracellular triglyceride content detection were performed to assess adipogenesis. Subsequently, after cimifugin treatment, TNF-α was used to induce IR and inflammation. The results showed that cimifugin reduced intracellular lipids accumulation of 3T3-L1 adipocytes. Cimifugin improved IR of 3T3-L1 adipocytes induced by TNF-α, as reflected in decreased adiponectin, GLUT-4, and IRS-1 mRNA and protein expression. Moreover, cimifugin reduced TNF-α-induced pro-inflammatory factors production and phospho-P65 expression, and MAPK pathway activation in the 3T3-L1 adipocytes. These findings suggested that cimifugin might be useful for the prevention and therapy of obesity-related IR and inflammation.
Das Wagnis der Interpretation zwischen Geistesgeschichte und Werkimmanenz
Authors: Krumeich Jens
Published: November 2023

Work-immanent interpretation (Werkimmanentes Interpretieren) is a theoretically, methodologically and practically interesting topic with a colorful history. By using Paul Kluckhohn, Fritz Martini, and Heinz Otto Burger as examples, the article traces the lines of development of interpretation in German studies from the Weimar Republic, under Nazism, and to the 1950s. I demonstrate that the didactic and propaedeutic practice of work-immanent interpretation in schools was complementary to the university curriculum from an early stage, balancing, for example, the abstract programs of Geistesgeschichte. The praxeology of German studies has to take these entanglements of school and academic practices into account.
Towards an enhanced semantic map for imperatives
Authors: Holvoet Axel
Published: November 2023

This article is a contribution to the semantic map of imperatives, prompted by an implicational map proposed earlier in the literature. The tentative semantic map proposed here abstracts away from differences in use that can be attributed to pragmatics, like distinctions between commands, requests, suggestions etc. The functional differentiation resulting from person and number value, which determines a different character of the directive speech act, is adopted as the basis for the characterization of polysemy in imperatives, and taken as the nucleus of the semantic map, which is then expanded by taking into account non-directive meanings, which are also differentiated with regard to the person value from which they develop.
Non-subject oriented existential, possessive and dative-experiencer constructions in Modern Hebrew – a cross-linguistic typological approach
Authors: Halevy Rivka
Published: November 2023

This paper sheds light on the alignment of Existential, Possessive and Dative-Experiencer constructions prevalent in Modern Hebrew that involve ambiguity of syntactic relations. Data-driven and employing a strictly typological approach, the study argues that the constructions in question are fundamentally related, and that they do not conform to the typological criteria of ‘subject-oriented’ languages, like most Indo-European languages. It is suggested that an inner relationship holds between the constructions in question. As a non-subject oriented language that does not require entities of referential prominence to be encoded as subjects or topics, Hebrew tends to configure non-volitional events as happening, or coming from outside – existing with reference to the entity experiencing them or who is involved in them as Benefactive or Possessor.
Az extrém fizikális és mentális terhelés, valamint az endogén szteroid bioszintézis összefüggései professzionális sportolóknál
Authors:   , Csöndör Éva
Published: November 2023

Az élsportolók az edzések, illetve mérkőzések során folyamatos intenzív mentális és fizikai megterhelésnek vannak kitéve. A stressz hatására a hipotalamusz–hipofízis–mellékvese tengely, valamint a hipotalamusz-hipofízis-gonád tengely aktiválódik, így a mellékvesekéregben, gonádokban, perifériákon fokozódik a szteroid hormontermelés. Kutatásunk során célunk volt élsportolók endogén szteroid-profilját vizsgálni extrém fizikai, valamint extrém mentális terhelés hatására. A terhelések során vérvétel történt a terhelés előtt nyugalmi állapotban, a terhelés maximumán, valamint 30 perccel a terhelést követően. A vizsgálati mintákból folyadékkromatográffal kapcsolt tandem tömegspektrométerrel szteroid-profil meghatározást végeztünk, egyidejűleg 16 endogén szteroid hormon koncentrációját határoztuk meg. Akut extrém fizikai terhelés hatására minden vizsgált szteroid hormon legalább egy terhelési fázisában szignifikáns növekedést mutatott. Szelektív aktiválódást extrém fizikai terhelés hatására sem a mellékvesekéreg zónái, sem a szteroid hormonokat termelő szervek nem mutattak. Az élsportolók endogén szteroid hormon szintjeinek legjelentősebb változását extrém akut fizikai terhelésnél a restitúciós fázisban azonosítottuk. Az alkalmazott módszertan alkalmas volt élsportolók endokrin homeosztázisának monitorozására, a terhelésre adott válasz jellemzésére.
The Institution of Consilium – Obligation or Right?
Authors: Báling Péter
Published: November 2023

In the following short paper, I would like to point out that the concept of consilium and auxilium proved to be a much more complex phenomenon during the centuries of the Middle Ages than many lexicons or the secondary literature presents. Contemporary sources also make it clear that armed military assistance was by no means the most typical form of assistance. We would also like to emphasize that the consilium was not necessarily seen as an obligation, but rather as a privilege, as it was an important political tool in the governance during the Middle Ages.