bluuebunny/crossref_metadata_2025 huggingface dataset:
Regulation of feeding part of complex of vibroacoustic diagnostics of rotary units of rolling stock
Authors: Shadmonxodjayev Murodilla , Insapov Damir
Published: August 2023

The article deals with the study of parameters of power supply control systems for the position of non-disassembly vibroacoustic diagnostics of rotary units of rolling stock. It is assumed that the power sources transmit constant electricity to bring the traction motors of electric locomotives and electric trains into rotation with the required frequency at the position of non-disassembly diagnostics of bearings. Experiments were performed following the MatLab/Simulink software. Analytical methods are used to determine the parameters of traction motors of electric rolling stock according to the program and the parameters of the controlled part as the power factor of various power supply options. The energy indicators of electric traction motors of electric rolling stock were determined in tabular and analytical forms, controlled parameters with different power coefficients of power sources. Based on the assessment of the energy indicators of various power supply options, it is concluded that it is advisable to use a circuit with a pulse converter in the position of vibroacoustic diagnostics of rotary assemblies. A variant of an energy–efficient power supply for non-disassembled vibroacoustic diagnostics is proposed, including an uncontrolled semiconductor rectifier and a pulse converter executed on an IGBT transistor. A radical way to increase the power factor of the power supply is using pulse voltage regulation.
Development of technology for obtaining polymer cement glue (PCG) with use of chemical additives and industrial waste
Authors: Turgunbayev Urinbek , Sharipova Dilafruz , Rakhimova Nozima , Yunusova Farida
Published: August 2023

The article presents the results of a study on the production of polymer cement glue with the use of chemical additives and industrial waste, as well as the influence of the amount and fineness of the filler grinding on the properties of polymer cement glue and the possibility of obtaining polymer cement glue PCG using water-soluble POLIMIX technology dry construction mix (DBM).
Development of technology for high-strength cast iron for manufacturing D49 head of cylinder
Authors: Rakhimov Uchkun , Tursunov Nodirjon
Published: August 2023

This article discusses the technology of melting high-strength cast iron with a spheroidal graphite shape intended for the D-49 type cylinder lid by modifying with magnesium (Mg) in the ladle and gating systems. Today, it is very important for the Republic of Uzbekistan and the CIS countries to create and improve high-strength cast iron production technology to prepare high-responsibility parts of railway transport. Improvement of the mechanical and operational properties of cast iron parts with high strength, as well as development and improvement of the casting technology of the D49 type diesel engine head imported from the CIS countries under local conditions.
Efficiency of using heat-insulating mixtures to reduce defects of critical parts
Authors: Toirov Otabek , Tursunov Nodirjon
Published: August 2023

A study was conducted to reduce defects in especially critical cast large-sized parts of freight car bogies. The side frame was used as the part under study. The main factors influencing the formation of hot cracks in large steel castings are presented. To avoid the rejection of steel castings, the use of heat-insulating mixtures to reduce hot cracks has been investigated. The temperature distribution of the melt along the height of the ladle is modeled. An analysis of the influence of the order of pouring molds and pouring temperature on the number of hot cracks in the side frames is presented.
Indicators of transport logistics of locomotives of diesel traction on Kattakurgan-Navoi section in operation
Authors: Ablyalimov Oleg
Published: August 2023

The subject of these studies is the assessment of the fuel and energy efficiency of using locomotives of diesel traction in various conditions for organizing the operational activities of railways with the third type of track profile. The purpose of the study: to substantiate the logistic parameters of the main indicators of the transport logistics of freight trains and the transportation work of three-section main (train) freight diesel locomotives of the 3TE10M series on the real hilly-mountainous section of Kattakurgan - Navoi of the railway line of the Samarkand - Navoi - Bukhara of the Uzbek railway. Research criterion: the value of the kinematic parameters of the movement of freight trains and the parameters of the main indicators of the energy efficiency of the studied diesel locomotives of the 3TE10M series in quantitative and monetary terms. The author obtained various trajectories of the speed and time of the train, tables, and graphs of logistic kinematic parameters for two types of movement of a freight train with different masses of trains and parameters of the main indicators of the energy efficiency of the studied diesel locomotive for three options for traction calculation on the hilly-mountainous section of Kattakurgan - Navoi of the Uzbek Railway roads. Also, the author compiled the corresponding regression equations for calculating the values of the mentioned logistic parameters, taking into account the dynamics of change and the rate of increase or decrease in the accepted range of fluctuations in the mass of freight trains, and set differentiated standards of consumption of full-scale diesel fuel for each stop of the freight train. The results of the study can be used by specialists in the operation shop of the Bukhara locomotive depot to develop diesel fuel consumption standards for diesel locomotives of the 3TE10M series and substantiate the traction quality of the track profile on the hilly-mountainous railway direction Samarkand - Navoi - Bukhara of the Uzbek railway.
Exposure to acoustic waves on viscoelastic cylinder
Authors: Akhmedov Sh.R. , Rakhmonov B.S. , Karimov I.M. , Marasulov A.M. , Zhuraev Sh.I.
Published: August 2023

The problem of the impact of acoustic waves in a homogeneous viscoelastic cylinder is considered. The investigation aims to investigate the diffraction of acoustic harmonic waves in a viscoelastic cylinder. The body is assumed to be in an infinite acoustic space filled with an ideal fluid. Numerical calculations of the angular and frequency characteristics of the scattered field for viscoelastic cylinders under the action of harmonic acoustic waves are carried out. In the case of steady waves, the Helmholtz equation describes the propagation of small disturbances in an acoustic medium. And in a viscoelastic homogeneous isotropic cylinder, scalar and vector Helmholtz equations with complex coefficients, the solution of which is described by Bessel and Neumann functions with complex arguments. A technique and algorithm have been developed for solving the problem of diffraction of acoustic harmonic waves in a viscoelastic cylinder. It has been established that the stress and displacement of a point of a viscoelastic cylinder take on a maximum value in the region of long waves. It was also found that considering the material’s viscous properties reduces the stress components to 10%.
Investigation of heat exchange processes in the lining of induction furnaces
Authors: Tursunov Tokhir , Tursunov Nodirjon , Urazbayev Talgat
Published: August 2023

This paper discusses scientific research in the direction of energy saving and the efficiency of heat transfer processes. In this direction, in particular, in the optimization of the design and modernization of heat exchange processes, as well as in the development of energy and resource-saving technologies, it is necessary to reconsider the lining thickness of induction melting furnaces.

The research on the optimization the thickness of the lining, consists of thermodynamic and thermal processes taking place in the liquid metal bath and on the boundaries of the refractory layer of the lining. The power of heat loss through the lining of a cylindrical wall is complex heat transfer under boundary conditions of the first and third kind. Beside that the active power lost in the inductor, the power released in the metal and useful power are calculated. This has resulted in an adjustment to the overall efficiency calculation, which includes thermal efficiency and electrical efficiency.

On the basis of thermal and electrical calculations for ICF-6 LMZ with a capacity of 6 tons, the rational thickness of the lining of the crucible wall is equal to δφ = 0.115 … 0.120 mm, which corresponds to the relation Dvt/Dm = 1.23 … 1.26.
Vibration measurement of KIUT building by MEMS accelerometer
Authors: Minowa Chikahiro , Kaniev Djamshid , Rustamov Akmal
Published: August 2023

This paper describes the measurements of structure small vibration in buildings of Yeoju Technical Institute in Tashkent (YTIT) in the use of MEMS accelerometer. The natural frequencies of main 6-story building were about 1.55Hz in both directions. In additions, the frequencies were measured for 10-story curve building under construction.
Vibration simulation of the spring element of the locomotive swing link
Authors: Khromova Galina , Kamalov Ikram , Makhamadalieva Malika
Published: August 2023

The article presents the simulation of vibrations of a cylindrical elastic rod bent along a helix for the swing link of a locomotive. As a result, methods for calculating the dynamic strength of helical springs for locomotives were developed.
Measures of effective use of the capacity of twotrack sections of JSC “Uzbekistan Railways”
Authors: Rasulov Marufdjan , Masharipov Masud , Bekzhanova S. E. , Bozorov Ramazon
Published: August 2023

The article first presents the analysis of the complete structure of all two-track sections of JSC “Uzbekistan Railways” with mixed traffic, and then the proposals of local and foreign scientists regarding the determination of the coefficient of displacement of freight trains from the graph on two-track sections in conditions of mixed traffic of trains are described in detail. In addition, the factors affecting the displacement coefficient of freight trains from the graph were analyzed, as well as the reduction of the time interval of the arrival of freight and high-speed passenger trains that arrive at the separation points in a row in the track direction, and as a result of the organization of train movement based on the technology of connecting, increasing the maximum number of freight trains in the sections suggestions were made regarding the issues.
The study of hydroxyl complexation processes in Fe(III)–Fe(II)–Na(H)CI–H2O system
Authors: Faizullozoda Erkin
Published: August 2023

Hydroxyl complexation in the Fe(III)–Fe(II)–Na(H)CI-H2O system at different ionic strengths of the solution, temperature 308.16 K, was studied by the Clark–Nikolsky oxidation potential method. The formation of the following mono- and binuclear coordination compounds is shown [Fe(OH)(H2O)5]2+; [Fe2(OH)2(H2O)10]4+; [Fe(OH)2(H2O)4]+ ; [Fe(OH)3(H2O)3]0. It was found that Fe(II) does not form hydroxo complexes at the studied concentration parameters, and the pH range from 1.0 to 3.0. Above this pH value, Fe(III) hydrolyzes and forms a brown precipitate.
Application of finite difference method for solving problem of seismic resistance of underground pipelines
Authors: Khusainov Rakhmatjon , Yarashov Javlon , Khusainov Saparboy
Published: August 2023

The paper analyzes the dynamic response of an underground main pipe under the action of a longitudinal wave propagating in soil along the pipe. The article assumes that the elastic pipe is of a finite length, and a linear viscoelastic model of the “pipe-soil” system interaction is considered. The problem is solved numerically using the explicit scheme of the finite difference method. A longitudinal wave in the soil is taken as a traveling sine wave. The article presents a comparative analysis of the results for certain values of elastic and viscous interaction coefficients, propagation velocity, and pulse duration. Under elastic interaction of the “pipe-soil” system, the reflection of the wave propagating in the underground pipeline at the boundaries of the pipeline coincides with the propagating wave in soil, leading to an increase in the maximum deformation of the underground pipeline, the value of which can double. The viscosity coefficient of interaction at the “pipe-soil” system contact leads to attenuation of the wavefront in the underground pipeline. For soils with values of viscous interaction coefficient of more than 100 kN·s/m2, this may lead to complete attenuation of the bursts at the wavefront in the pipeline. The choice of the step ratio in coordinate and time equal to the wave propagation velocity in the pipeline allows for obtaining results that coincide with the exact solution.
Scientific substantiation of technology of efficient use of water resources in irrigation of cotton
Authors: Butayarov A. T. , Nazarov A. A.
Published: August 2023

Today, due to global climate change, the demand for irrigation water is growing in every part of the world, so the rational use of available water resources requires the management of water resources through water-saving technologies. It is necessary to analyze data on the rational management and efficient use of limited water resources in the country, to continuously increase the efficiency of water resources in the field, to expand the use of water-saving irrigation technologies and their application in production, and to eliminate excess water loss.
Characteristics of application of different time rates for electricity consumed in industrial enterprises
Authors: Isakov Abdusaid , Muratov Khakim , Kadirov Kamoliddin , Kushev Alijon
Published: August 2023

The article analyzes the graphs for the period of electricity consumption in industrial enterprises using a system of time-varying tariffs. Residents and settlements, industrial enterprises, manufacturing enterprises, factories, and several electricity-consuming organizations will be able to pay for electricity consumption at reduced prices because of the application of time-varying tariffs during non-peak hours of the day. If a consumer consumes electricity at night, he can pay for each kWh consumed at a price 1.5 times lower than during the day. Consumers pay less for electricity, which lowers the cost of production. This, in turn, will allow power generating and power supply organizations to ensure the long-term operation of the network and transformers, reduce the load period and provide consumers with quality electricity.
Anode behavior of aluminum alloy AB1 with magnesium
Authors: Kurbonova M. Z. , Emomov I. A. , Rakhimova N. T. , Ganiev I. N. , Kurbonova D. A. , Norkulov U. M.
Published: August 2023

In modern technology, the main advantages of aluminum alloys as structural materials are lightness, pliability to stamping, corrosion resistance (in air, aluminum is instantly covered with a strong film of Al2O3, which prevents its further oxidation), high thermal conductivity, and non-toxicity of its compounds. These properties have made aluminum alloys the main raw material in the aviation and aerospace industries and, more recently, as a composite material. Regarding specific strength (the ratio of ultimate strength to density), aluminum alloys are significantly superior to steel.

Therefore, in the article, the electrochemical properties of the aluminum alloy AB1 with magnesium in the NaCl electrolyte medium were studied by the potentiodynamic method with a potential sweep rate of 2 mV / s. It is shown that alloying the AB1 alloy with magnesium up to 1.0 wt.% Increases its anodic stability by 30% in the NaCl electrolyte environment. It was found that with an increase in the concentration of chloride - ion, the corrosion rate of alloys increases, and the potentials of free corrosion, pitting formation, and repassivation of alloys decrease. An increase in the content of the alloying component shifts the indicated potentials to the positive region.
Energetic self-organization and development of the structural scheme of a polymer fiber tribosystem
Authors: Almataev Tojiboy , Yusupov Said Abrorhon , Almataev Nozim
Published: August 2023

The article presents the results of the analysis of the main processes of friction of polymeric materials during friction with fibrous mass from the standpoint of irreversible processes and developed a block diagram of a polymer fiber tribosystem.
Production technology and properties of polystyrene concrete on recycled polystyrene
Authors: Dubovitskaya Natalia , Mukhamedbaeva Zamira , Mukhamedbaev Abdugafur
Published: August 2023

The article deals with the production of polystyrene concrete from recycled polystyrene crushed in a rotary crusher waste from the production of foam packaging. The resulting polystyrene concrete can be attributed to thermal insulation, used for insulation of load-bearing structures of buildings, as well as to structural and thermal insulation, used as a bearing layer of the outer walls of low-rise buildings. The dependence of the thermal conductivity of the sample on the density and strength of polystyrene concrete has been established, and the resistance to shock loads depends not only on the composition but also on the polystyrene concrete hardening accelerator used.
Development of inhibitory drilling fluid for drilling in clay layer
Authors: Yodgorov Nizomiddin , Abdukarimov Mirzohid , Norkulov Shaxboz , Suyunov Ramiz , Khabibillaev Muhammad
Published: August 2023

The article presents the results of research on the development of efficient compositions of inhibitory drilling fluid based on local raw materials and production waste. The efficiency of technological factors and composition of developed complex inhibitors on the physicochemical properties of emulsion and oil-emulsion drilling fluids have been studied.
Spectroscopic and X-ray structural investigations of the active calcium preparation
Authors: Sadikova Nargiza , Ulugmuradov Nor , Tursunova Zukhra , Sagdullaeva Mavjuda , Kadirova Nazokat
Published: August 2023

Structural studies of calcium citrate obtained by IR irradiation of calcium carbonate and citric acid in various ratios by spectroscopic and X-ray structural analysis has been carried out. It is shown that in the obtained samples of calcium carbonate there are polymorphic states in the form of aragonite, vaterite, calcite, as well as ikaite and in calcium citrate complex calcium compounds with different coordination numbers are observed.
Calculation of the stress-strain state of monolithic bridges on the action of real seismic impacts
Authors: Shermukhamedov Ulugbek , Mirzaev Ibrakhim , Karimova Anora , Askarova Dilbarkhon
Published: August 2023

To improve the transport infrastructure of the Republic of Uzbekistan, there is a tendency to build monolithic structures of bridges and overpasses. The article presents the calculation of a monolithic bridge on the 1083rd km of the M-39 highway passing through the city of Samarkand. The results of the monolithic bridge calculation on dynamic loads are presented, based on the records of two real seismograms of two dangerous earthquakes registered for a system with a spectral composition: the Gazli (Uzbekistan) and Manjil (Iran) earthquakes. The results of calculations of longitudinal and vertical displacements, and normal stress in the upper and lower parts of the span along the length of the bridge were analyzed. The calculations performed, show that the span structure and bridge supports have an overestimated margin of safety for an 8-point earthquake according to MSK-64. To ensure the guaranteed seismic safety of bridge structures, it is required to conduct design calculations based on a set of records of earthquake events that are close in dominant frequencies to the characteristics of the construction site. This provision must be included in the relevant regulatory documents.
Fabrication and characterization of RF magnetron sputtered composite MoS2 and ZrN coatings on Ti3SiC2 max phase for space applications
Authors: Wani M. F. , Ziyamukhamedova U. , Mufti Taseer A. , Saleem Sheikh S. , Sehgal Rakesh
Published: August 2023

The lubrication effect of solid-based materials has been recognized for centuries, but their use as lubricants dates back to only about 50 years. Solid lubricants are used in applications where parts operate under severe operating conditions such as extreme temperatures and very high vacuum. Solid lubricants replace liquid based lubricants for operation under extreme environmental conditions that are beyond the capability of a liquid-based lubricant such as high or very high vacuum, high and cryogenic temperatures, radiation, corrosive gases, and fretting wear. Applications such as space mechanisms, satellites, space vehicles, turbopumps, nuclear reactors, refrigeration plants, etc are examples of such operating conditions.

In this research, nano scale composite coatings of MoS2with varied proportions of ZrN (5%, 10% and 20%) were deposited on Ti3SiC2 Max phase substrate using Physical Vapour Deposition (PVD). The PVD technique used was the RF magnetron sputtering process. Material characterization was carried out using Field Emission Scanning Electron Microscope (FESEM) Spectroscopy and Energy Dispersive X-Ray Spectroscopy (EDS). Addition of ZrNis observed to reduce the porosity of the self-lubricating MoS2 coating.
Study and analysis of the IR spectra of a composition based on polyamide filled with iron nanoparticles
Authors: Umarov A. V. , Kuchkarov H. , Kurbanov M.
Published: August 2023

A complex of studies was carried out to study the chemical composition of the initial components and compositions: polyamide and nanocompositions based on it, filled with iron particles. The paper presents an analysis of the IR spectra of the developed polymer nanocomposites.
Dynamic calculation of a plane “Earth Dam-Base” system under seismic impact
Authors: Salyamova K. D.
Published: August 2023

Design, construction, as well as reliable and safe operation of earthen hydraulic structures (earth dams) in the Republic of Uzbekistan, located in a seismically hazardous zone, require constant improvement of load calculation methods, as required by building codes, including constant loads (static - gravity, hydrostatic) and temporary dynamic loads (seismic). The current normative method does not take into account the non-one-dimensional behavior and piecewise heterogeneity of the soil characteristics of the structure and foundation. It does not allow determining the stress-strain state (SSS) of an earthen dam, which is especially important for reliable and safe operation in seismic areas. A mathematical formulation of the dynamic problem of an earthen dam in a flat elastic formulation is given. The problem is solved numerically by the finite element method. The eigenfrequencies and modes of vibrations of the flat system “structure-foundation” are determined taking into account the piecewise inhomogeneous characteristics of the foundation soil. Based on the results of these parameters, an appropriate behavior analysis is performed. The SSS of the “dam-foundation” system was studied at the calculated natural frequencies. The result of the calculation was the isocline of equal displacements, normal and shear stresses in the “dam-foundation” system.
Study of biological treatment of domestic and municipal wastewater using microscopic algae
Authors: Abdukadirova M. N. , Ismailxo’jaev B. Sh. , Abdukadirova K. B.
Published: August 2023

The article presents the results of research on improving the technology of biological treatment of domestic and municipal wastewater by microscopic algae at the Bektemir treatment plant in Tashkent. Growth, development, yield and hydro - chemical composition of water by growing algae at concentrations (50, 75, 100%) and the effectiveness of biological treatment of wastewater in a semi-finished device have been studied.
Negative magnetoresistance in silicon doped with manganese
Authors: Zikrillaev N. F. , Iliev Kh. M. , Mavlonov G. Kh. , Isamov S. B. , Madjitov M. Kh.
Published: August 2023

Based on the developed low-temperature step-by-step diffusion of impurity manganese atoms, magnetic nanoclusters of manganese atoms were formed in the crystal lattice of silicon with controllable concentration, with specified and reproducible electrophysical parameters. With the help of electron spin resonance, it was proved experimentally that magnetic nanoclusters are formed in p-Si silicon and consist of four positively charged manganese atoms which are situated in the nearest equivalent inter-nodes around the negatively charged boron atom. Based on the study of electrophysical properties of the material obtained it is shown that in such materials an anomalous Hall effect is observed. Magnetoresistance in silicon p-Si with magnetic nanoclusters at room temperature was studied and a giant negative magnetoresistance (NMR) Δρ/ρ~300 %, was found, it was shown that with increasing concentration of nanoclusters, NMR value essentially rate.
Analysis of Using Literacy Learning Web in Elementary School: Survey of Elementary School Teachers in Pekanbaru
Authors: Kurniaman Otang , Irnanda Ela , Mulyani Eva Astuti , Nanda Dzoelqa Wirya , Noviana Eddy , Amrina Zulfa , Sari Intan Kartika
Published: August 2023

Currently, technology plays a crucial role in various aspects, including education. Therefore, this study aims to provide an overview of the use of web-based technology in literacy learning among teachers in elementary schools. The research methodology employed a quantitative approach through a survey involving 55 teachers. The findings reveal that 74.55% of teachers have received training in learning technology, leading to 92.73% of them implementing technology-enhanced learning in schools. Particularly during the pandemic, teachers have been compelled to rely on learning technology and develop interactive learning media. However, it is important to note that many teachers still lack proficiency in utilizing technology, as only 47.27% of them are able to create web media or blogs as learning tools. The survey results also indicate that 74.55% of teachers face difficulties in creating online learning materials, while 65.45% struggle with teaching online. Surprisingly, only 1.3% of teachers reported using technology or the web in literacy learning, while a significant majority (83.6%) have never utilized it. Additionally, 3.6% of teachers expressed unfamiliarity with web-based technology. These findings suggest that the integration of web-based technology in literacy learning is still limited, possibly due to age-related constraints and a lack of expertise in the IT field among teachers.
E-SW to Improve Students’ Naturalistic Intelligence on Freshwater Ecosystem Material
Authors: Wulandari Sri , Suwondo Suwondo , Hac D M. Ulil
Published: August 2023

The practice activities carried out in the ground area do not fully recognize the environment with the blended learning process. This development research aims to produce E-Student Worksheet (E-SW) teaching materials that can increase students’ naturalistic intelligence on freshwater ecosystem materials for aquatic ecology courses at the Biology Education Study Program, FKIP University of Riau. Development research using the ADDIE model Students measured parameters by validity, practicality, and naturalistic intelligence assessed. Data collection was carried out through field observations, interviews, and the dissemination of questionnaires. The trial subjects consist of 1 material expert, 1 educational expert, and 1 media expert, a small group trial of 15 students and a large group trial of 35 students. The data is analysed by the descriptive method. The results showed that the validity of the Electronic E-SW was very valid with an average value of 95.67% based on the aspect of display quality 94.64%, software aspects 93.75%, usage aspects 95.31%, content and material feasibility aspects 95 .67 %, and linguistic feasibility aspect 95.83%. The practicality of E-SW is relatively practical, with an average value of 78.96% based on the aspect of use 79.08%, the aspect of time efficiency of 77.43%, and in the aspect of benefits of 79.23%. The Naturalistic Intelligence of students using E-SW increased from 64.02 (good) to 83.18 (very good). E-SW is very suitable to be used as teaching material for practicum activities in aquatic ecology lectures. The implications of this research are expected to be an alternative to E-SW teaching materials in the lecture process by blended learning or face-to-face.
Blended Learning for English Speaking Skill Activities: Students’ Perspective
Authors: Miftakh Fauzi , Samsi Yogi Setia , Saputri Eka Arifianti
Published: August 2023

The purpose of this study is to investigate students’ perspectives on learning speaking skills using blended learning. This study was conducted in one of the public junior high schools in East Belitung. A narrative inquiry approach is used to collect personal accounts of the students’ perspectives during the teaching and learning process. To obtain interview data, as was recommended by the teacher, six 8th-grade students were involved. The results showed that in blended learning, students learned both face-to-face at school and asynchronously at home. They explained how they learn to speak asynchronously at home with the help of technology. They think positively about speaking learning activities with blended learning. They felt that blended learning made them more confident, more independent, and more flexible in learning to speak. In addition, blended learning offers a more flexible study time so that students feel their speaking and public speaking skills are better than before. However, the disadvantages of blended learning, especially when it is asynchronous, are the problem of poor internet connection and the high cost of internet packages and learning devices.
Evidential Modality in Kampar Malay Dialect
Authors: Sinaga Mangatur , Aibonotika Arza , Permatasari Silvia
Published: August 2023

Forms of evidence as a subcategory of modality have yet to receive particular attention in Indonesian linguistics studies. Researchers do not give a distinct classification to the modality subcategory of the form of the marker, which has a distinctive characteristic. It means that the public’s expression of Indonesian language modalities in lexical patterns for both oral and written is not observable. Moreover, it is different from languages like Japanese with grammatical construction. Other research has identified the equivalent of evidential forms in Japanese in Indonesian and found a unique use of the term’s appearances, taste, function, and meaning the evidential. The Malay language has contributed to the Indonesian language and must have a distinctive form of evidence. It is commonly caused by many unexpected attitudes of the speaker when conveying a proposition (state of the matter or events). However, this study investigates the form, function, and meaning of evidential modalities in Kampar Malay dialects in Riau Province, Indonesia. The Kampar Malay dialect is one of the subdialects of the Malay language in Riau. This study refers to Narrog’s concept of pure evidence, where the speakers’ attitudes do not contain elements of inference (allegations) and inferential evidence that the speaker can distance himself from consideration, at least partially, with doubts of doubt. The data was obtained from native speakers through interviews. Furthermore, the markers of modality evidence were analyzed for syntactic behavior by the distribution method. Based on the analysis results, in Kampar Malay dialect, it was revealed that the revealer of pure evidence was not marked, while inferential evidence was marked by the use of sobuik, condoe, dongow cito, dongaw-dongaw cito, keceknyo, gakde, ndak kan lai, aso den, aso-aso, nampak, nampaknyo, nampak e, nampak a, and nampak-nampak.
Patriarchic Culture as One of the Repertoires in the Sampek and Engtay Scripts by Nano Riantiarno
Authors: Baihaqi Imam , Sayuti Suminto Ahmad , Suroso Suroso
Published: August 2023

This study aims to reveal the embodiment of patriarchal culture as a repertoire in the plays Sampek and Engtay, which is the background of the creation so that the foreground intended by the author can be revealed. This study uses Wolfgang Iser’s repertoire theory as the formal object and the text of the Sampek and Engtay plays as the material object. After that, material objects that contain textual reality (reality in the text) are then connected with everything that is the background of creation, including social, cultural, and historical norms as extratextual reality (reality outside the text).
Organizational Typology Role of the Niniok Mamak Traditional Tribe in Kanagarian Kuok
Authors: Faizah Hasnah , Elmustian Elmustian , Auzar Auzar , Kurniawan Otang , Noviana Eddy
Published: August 2023

The typology of the organization is a form of Niniok Mamak’s role in carrying out existing policies for the Kampar indigenous people. The important role of Niniok Mamak is a leader who regulates and nurtures their nephew’s children following customary and religious rules. This research is qualitative research to collect written descriptive data and oral data from the observed object. Primary data sources are obtained by digging from the source directly to the respondent. In addition, data were obtained through interviews and direct observations in the field. The primary data sources in this study were the Ninik Mamak in the Kampar district community. The secondary data sources are indirect data sources that can provide data for research and were obtained from literature studies, documentation, print media, and electronic media. The results of the research on the role and function of the Niniok Mamak in Kanagarian Kuok in determining the customs have their respective functions which in this study, the total number of Niniok Mamak has 20 (twenty) Niniok Mamak tribal chiefs consisting of 4 (four) tribes: (1) Munip Melayu Nan 9 led by Datuk Penghulu Besar; (2) Munip Piliang Nan 7, led by Datuk Paduko Simarajo, in Piliang Nan 7 there are four Caniago; (3) Munip Domo Nan 3, led by Datuk Paduko Tuan; and (4) Petopang Nan Tunggal was led by Datuk Pakomo. In carrying out the role and function of the Niniok Mamak in the Kerapatan Adat Negeri (LAM/LAK), it is obligatory to take an oath of office as the children’s leader and the community in Kanagarian Kuok. Guidelines in carrying out the roles and functions of traditional leaders in Kanagarian Kuok adhere to: “adat yang bersendikan syarak, syarak bersendikan Kitabullah” (adat based on syarak, syarak based on the Book of Allah). Syarak said the custom of wearing would be accounted for in the hereafter.
Lack of Critical Approach in the Hate Speech Research as Ideological Practice in Indonesia
Authors: Sirulhaq Ahmad , Yuwono Untung , Muta’ali Abdul
Published: August 2023

Hate speech is a global phenomenon that surge in almost all countries in the last few years. This, for one thing, is triggered by the presence of social media, so people tend to express their feelings directly without thinking much. The high political tension also makes it easy for hate speech to be expressed and become viral. In Indonesia itself, it is not uncommon for ethnicity, religion, race, and inter-group relations issues to color the phenomenon of hate speech. So far, this article is a systematic review of hate speech research in Indonesia as it aims to map research trends on hate speech, starting from the main topics discussed, to several methodological issues. Data were analyzed using the CALL (computerassisted language learning) approach, by utilizing the NVivo 12 application combined with Lancs Box 6.0. The article data was taken from all DOAJ and Google Scholar-indexed articles in Indonesian. There are at least 44 articles related to hate speech in Indonesia that have been researched by previous researchers from various scientific disciplines, ranging from communication sciences, education, languages, computers, law, and religion. From all the articles reviewed systematically, it can be seen that the phenomenon of hate speech in Indonesia has a close relationship with a variety of social life which is quite complex. However, among the existing studies, the application of a critical approach is still very limited in the context of the hate speech phenomenon. This fact is due to the fact that the understanding of hate speech in Indonesia has so far been seen as personal whereas hate speech itself is very ideological.
Factors Influencing Student School Selection Based on Gender Differences: Empirical Analysis during the Covid-19 Pandemic
Authors: Hayati Laila , Hapipi Hapipi , Savalas Lalu Rudyat Telly , Ardhuha Jannatin
Published: August 2023

The purpose of this study was to investigate the factors that influence junior high school students in choosing a high school based on gender differences. The literature review was used to identify relevant factors to be incorporated into the survey instrument design. Questionnaires were administered via the Google form link, and information was collected from 564 junior high school students. Respondents consisted of 226 male respondents and 338 female respondents spread across West Nusa Tenggara Province. The multiple-response survey data was then analyzed using descriptive statistics. In general, the results showed that the reasons for choosing a school for male respondents were dominated by their own desires, close to home, favorites, and the prospect of continuing their studies at their favorite university. Meanwhile, the reasons for choosing a school for female respondents were dominated by their own desires, preferences, the prospect of continuing their studies at their favorite university, and the achievements of the target school. This shows that female respondents tend to be more interested in choosing schools that have high popularity and many achievements. In contrast, male respondents are more likely to choose a school that is close to home and popular even though the school has minimal achievements. This finding is very important for schools and teachers about the factors that influence students in choosing a school. Identification of factors allows the development of the right strategy and balances the dynamics of the social environment and rapidly developing information technology.
Online-Schmerzedukation verstärkt die positiven Auswirkungen
eines Online-Trainingsprogramms gegen Rückenschmerzen
Authors: Ayensa Jennifer Sion , Schifferdecker-Hoch Frank , Hollmann Michael
Published: August 2023

Digitale Angebote im Gesundheitsbereich werden oft von vielen Seiten kritisch
gesehen. Dennoch bieten sie zunehmend Vorteile. Übungsprogramme gegen
Rückenschmerzen werden bereits in verschiedenen Formen digital
angeboten. Der biospsychosoziale Ansatz in der Rückenschmerztherapie
einschließlich der Schmerzerziehung erfordert jedoch weitere
Maßnahmen. In der vorliegenden randomisiert-kontrollierten Studie wurde
daher ein 5-wöchiges Kurztrainingsprogramm durch ein digitales
Schmerzbildungsprogramm ergänzt. Während die Kontrollgruppe
(n=50) nur das Übungsprogramm erhielt, nahm die
Interventionsgruppe (n=29) auch an dem Schulungsprogramm teil. Die
Ergebnisse zeigen einen deutlichen Zusatznutzen des zusätzlichen
Schmerzwissens. Schmerzintensität (p=0,036),
Schmerzregelmäßigkeit (p=0,050) und Kinesiophobie
(p=0,014) verbesserten sich in der Interventionsgruppe signifikant
stärker als in der Kontrollgruppe. Somit zeigen die Ergebnisse positive
Zusatzeffekte der digitalen Schulungsmaßnahme. Die Kombination der
beiden digitalen Therapiemodule eröffnet somit neue
Möglichkeiten für eine standardisierte evidenzbasierte Therapie
auf biopsychosozialer Ebene.
Deceptive Presentation of Low-Grade Lymphoma with Grade 3 Marrow Fibrosis and Aplasia: Diagnostic and Clinical Considerations
Authors: Singh Suvir , Sharma Rintu , Singh Jagdeep , Paul Preethi
Published: August 2023

Bone marrow fibrosis with lymphoproliferative disorders is rare with the exception of hairy cell leukemia and nodular sclerosis Hodgkin's lymphoma. We report the case of a 63-year-old gentleman with indolent B-cell lymphoma presenting with myelofibrosis and aplasia. He was evaluated for pancytopenia with no organomegaly or lymphadenopathy. Bone marrow aspiration was a dry tap and biopsy revealed a hypocellular marrow with a cellularity of 10 to 20% with absent megakaryocytes and grade 2 to 3 reticulin fibrosis. Myeloproliferative neoplasms were ruled out based on morphology and absence of myeloid mutations on next-generation sequencing. Further sections revealed interstitial infiltrates of lymphoid cells with round, clumped chromatin and inconspicuous nucleoli, which on immunohistochemistry (IHC) were positive for CD20 and BCL2, and negative for CD5, CD10, BCL6, annexin A1, cyclin D1, and TdT. The final diagnosis was thus confirmed as CD5-negative low-grade B-cell lymphoma and he was initiated on therapy with a combination of Bendamustine and Rituximab. He had resolution of symptoms and cytopenia after six cycles of the same. Presence of significant myelofibrosis on the background of a hypocellular marrow can mimic several subtypes of myeloproliferative neoplasms or myelodysplastic syndromes, providing a diagnostic challenge. IHC is essential in determining the exact subtype to decide further therapy. Based on literature search, only a handful of patients with this presentation have been described and this case will be a valuable addition to the same.
Critical Analysis of Advanced High-Grade Serous Epithelial Ovarian Cancer in Women: An Experience of 100 Cases from a Regional Cancer Center in Northeast India
Authors: Barmon Debabrata , Patra Sharda , Nandwani Megha , Jethani Roma , Kataki A. C.
Published: August 2023

Ovarian cancer is the sixth most common cancer in women worldwide. Patients with ovarian carcinoma mostly present at an advanced stage with serous type of epithelial ovarian cancers, which is the most lethal of all pelvic malignancies. This study aims to critically analyze high-grade serous epithelial ovarian carcinomas in women from the Northeastern region of India and compare our data with Western literature to modify treatment strategies and improve survival outcomes. This hospital-based retrospective analysis involved data from the records of 100 women with high-grade epithelial ovarian cancer treated primarily with neoadjuvant chemotherapy followed by interval debulking surgery in the department of gynecologic oncology at a tertiary level regional cancer institute from January 2018 to December 2019. The demographic, clinical and pathological profile, and survival outcome were evaluated using descriptive statistics. The overall survival of the study population was calculated using Kaplan–Meier curves using SPSS software (version 24). The majority of women belonged to 41 to 55 years age group. At first presentation to the hospital, 89 and11% patients were in stage III and stage IV of disease, respectively. Clinically, 95% of women had ascites, and 18% had metastasis to lymph nodes. Distant metastasis to lungs and liver was present in 10 and 3% of cases, respectively. A substantial percentage (98%) of women had raised serum Ca125 > 1000 at baseline, ranging from 1,745 to 10,987 IU/mL. Almost two-thirds of the cases had partial-to-complete response to neoadjuvant chemotherapy (78%). In most of the women (72%), there was no residual disease at interval debulking surgery (R0), though 28% women had R1& R2 resection. The median overall survival time was 36 months. High-grade serous ovarian cancer is commonly seen in older age group, but its occurrence in younger population has also been observed. Early diagnosis is crucial in decreasing morbidity and mortality among these patients. Therefore, efforts should be made to identify risk factors for malignancy. Assessing each parameter of statistical information reflecting its own profile may be important for calculating the risk for the development of ovarian cancer, which can help in implementing preventive measures in the future.
Percutaneous Spinal Interventions for Chronic Pain Management
Authors: McCormick Robert , Shah Sunali
Published: August 2023

Chronic neck and back pain are two of the most common and disabling complaints seen in primary care and neurology practices. Most commonly these come in the form of cervical and lumbar radiculopathy, lumbar spinal stenosis, and cervical and lumbar facet arthropathy. Treatment options are widespread and include nonpharmacological, pharmacological, surgical, and interventional options. The focus of this review will be to discuss the most common interventional procedures performed for chronic cervical and lumbar back pain, common indications for performing these interventions, as well as associated benefits and risks. These interventions alone may not suffice to improve the quality of life in those suffering from chronic pain. However, an understanding of the interventional pain options available and the evidence behind performing these interventions can help providers incorporate these into a multimodal approach to provide effective pain management that may allow patients an improved quality of life.
A perspective from Turkey on construction of the new digital world: analysis of emotions and future expectations regarding Metaverse on Twitter
Authors: Hasgül Ergün , Karataş Mustafa , Pak Güre Merve Deniz , Duyan Veli
Published: August 2023

Metaverse is a new digital world where the real and virtual worlds merge on a technological ground. After Mark Zuckerberg, CEO of Facebook hyped the metaverse, attention was drawn to it all over the world. In Turkey, the Metaverse was hyped in the “Teke Tek Bilim” program and Twitter users shared their views for days afterwards. This study aims to analyse Twitter users’ feelings about the Metaverse and their expectations for the future. The 10,437 tweets shared in Turkey between 10 January 2022 and 17 January 2022 with the hashtag Metaverse were analyzed using sentiment analysis techniques. The findings of the study indicate the metaverse will increase technological investments, new services, products, and markets will emerge, it may lead to irregularities in ethical codes and rules, society may be unready for technological developments, and media addiction may occur.
Computational methodologies hunt for elusive metal-organic frameworks
Authors: Thompson Avery
Published: August 2023

While this class of materials is renowned for their versatility, finding exactly the right properties can be challenging without powerful analysis techniques.
On the geometric phases during radio frequency pulses with sine and cosine amplitude and frequency modulation
Authors: Sorce Dennis J. , Michaeli Shalom
Published: August 2023

In this work, we describe the formation of geometric phases during nonadiabatic frequency swept (FS) radio frequency (RF) pulses with sine amplitude modulation and cosine frequency modulation functions. The geometric phases during the FS pulse were analyzed using a Schrödinger equation formalism, and the unified analytical expression for the geometric phase was derived. We present the solutions for sub-geometric phase components incorporated in spinor wavefunctions for the RF Hamiltonian of spin ½ nuclei. We demonstrate that the geometric phases during sine/cosine RF pulses are opposite in signs for different initial conditions of the spinor and that geometric phases can accumulate in correspondence to different magnetization trajectories. The derived formalism could be extended for the evaluation of the geometric phases during a wide class of amplitude- and frequency-modulated pulses used in MRI and in high-resolution NMR.