bluuebunny/crossref_metadata_2025 huggingface dataset:
Knowledge Creation and Transfer in the Context of National Office Consultations: Experiences of Audit Firm Partners
Authors: Aghazadeh Sanaz , Dodgson Mary Kate , Kang Yoon Ju , Peytcheva Marietta
Published: November 2022

Knowledge creation and transfer within audit firms is critical to achieving high audit quality. We conduct semistructured interviews with 22 engagement partners and national office partners, and we draw on Nonaka and Takeuchi’s socialization, externalization, combination, and internalization (SECI) model to understand how knowledge creation and transfer processes unfold in audit firms in the context of national office consultations. Overall, we observe that the national office and engagement partners engage in all four processes of knowledge creation and transfer outlined in the SECI model: tacit to tacit, explicit to explicit, tacit to explicit, and explicit to tacit. Our study offers implications for auditors and regulators and brings to light opportunities for future auditing research.

JEL Classifications: M41.
Analysis of Mathematical Communication Ability in Terms of Student's Numerical Ability
Authors: Sari Suci Indah , Yuberta Kurnia Rahmi
Published: November 2022

Abstrac- This research is motivated by the low mathematical communication skills of students. Students have difficulty in expressing problems into mathematical notation and performing arithmetic operations and re-expressing mathematical descriptions. This is related to the students' numerical ability. Therefore, this study aims to describe students' mathematical communication skills in terms of high, medium and low numerical abilities. The type of research used is descriptive qualitative research. The subjects in this study were students of class X IPA-1 SMA N 1 Kec. Lareh Sago Halaban which consists of 6 students with 2 students each with high, medium and low numerical abilities. The instruments used in collecting data in this study include the researcher as the main instrument, and supporting instruments in the form of numerical ability tests, tests of students' mathematical communication skills and interview guidelines, with data collection techniques carried out by tests and interviews. The data analysis technique used is the Miles and Huberman concept, namely data reduction, data presentation and conclusion drawing. Checking the validity of the data used is triangulation technique. The results showed that subjects with high numerical abilities were easier to interpret and communicate mathematical ideas and ideas. Subjects with moderate numerical ability tend to be less capable and have little difficulty in interpreting and communicating mathematical ideas. And subjects with low numerical ability tend to be unable to interpret and communicate mathematical ideas.
Impacts of Cross-Border Interaction from the Perspective of Cross-Border Cooperation Actors
Authors: Lačný Martin , Polačková Anna , Székely Gabriel
Published: November 2022

Cross-border cooperation represents a "laboratory" of the international integration process, in which synergy is created between the diverse political, economic, cultural and social characteristics of the actors involved. The present paper examines perceptions of local cross-border cooperation actors in Slovak-Ukrainian borderlands. It is aimed 1) to identify their perceptions regarding the impact of more intensive cross-border interaction and expected impacts of the Association Agreement and 2) to verify the relationship between their views on the effects of the EU-Ukraine Association Agreement implementation, as well as on deepening cross-border interaction and their tendency to perceive the EU, Ukraine or Slovakia as reliable partners. The empirical research and the statistical analysis were based on the approach proven within the EXLINEA research project. The results have revealed that the more intensive cross-border interaction has, as perceived by local actors on both sides of the border, a rather positive impact on borderlands. At the same time, perceptions regarding the reliability of Ukraine's partnership with Slovakia and the EU are seen as relatively significant correlates of attitudes of local cross-border cooperation actors. Namely, their attitudes to the effects of cross-border economic interaction, cross-border cooperation and the impacts of the Association Agreement implementation.
Effect of Erdene urel on Microglia / Macrophage Distribution and Inhibition of Inflammatory Response after Brain Ischemia in Rats
Authors: Rong Hu Yu , Tumurbaatar Khaliunaa , Gansukh Baigal , Chuluun Batnairamdal , Chimedtseren Chimedragchaa
Published: November 2022

Objectives: We studied the effect of Erdene urel on microglia/macrophage M1/M2 distribution and neuroinflammation using a cerebral ischemia-reperfusion injury model in rats. Methods: The middle cerebral artery occluded by thread occlusion, followed by reperfusion at 90 minutes after ischemia. The injury was studied at 1, 3, and 7 days after brain ischemia, and the neurological score was graded, after that, the brain tissue was collected by decollation. The phenotypes of M1 and M2 were detected by Iba1 and Arg-1 immunofluorescence, and the expressions of (TNF-D), (IL-1E), (IL-6), and (IL-10) were detected by ELISA. Result: The immunofluorescence showed that compared with the sham-operated group, the microglia/ macrophage (Iba1) in the ischemic area of the control group’s rats with middle cerebral artery occlusion and to which reperfusion was performed for 1, 3 and 7 days was increased (p<.05) and the number of M2 (Arg-1) (p<.05) was reduced. One day after reperfusion, the Erdene urel and nimodipine groups did not differ from the control group. However, after 3 and 7 days, the microglia/macrophage (Iba1) (p<.05) in the ischemic area of Erdene urel and nimodipine groups was reduced, while M2 (Arg-1) (p<.05) was increased. Conclusion: Erdene urel is likely capable of promoting the transformation of activated microglia/macrophages from M1 to M2.
Mongolian Medicine Honghu-Qiqige Ethanol Extract Exhibits Anti-Inflammation Role in Arthritis
Authors: Li Gao Zhang Ha Dan Bao , Wang Xiu Lan , Enkhsuren Enkhbold , Ba Tu Bu Ren , Dorjbal Enkhjargal , Damdinjav Davaadagva
Published: November 2022

Objective: To explore the therapeutic effects of Honghu-Qiqige on collagen-induced arthritis (CIA) rats and the pharmacological mechanism. Methods: We evaluated the anti-inflammatory effect of Honghu-Qiqige’s ethanol extract on CIA, to our knowledge, for the first time. The level of pro-inflammatory cytokine was determined by an ELISA. The expression of TNF-α and IL-1β was analyzed by RT-PCR. Additionally, the expression level of NF-kBP65 was evaluated using the Western blot method. Results: Ethanol extract of Honghu-Qiqige significantly reduced the secretion of TNF-α and IL-1β in RAW264.7 cells stimulated by lipopolysaccharides. The expressions of IL-1β mRNA, TNF-α mRNA, and NF-kBP65 protein were inhibited in all dose ranges used (5, 20, and 50 μg/ml). The protective effect of the extract on RAW 264.7 macrophage inflammation induced by lipopolysaccharide was preliminarily confirmed, and the mechanism may be related to the NF-kBP65 pathway. The same results were obtained in vivo experiments. Conclusion: All these results suggest that Honghu-Qiqige ethanol extract has potential to develop drugs to treat arthritis.
Analysis of Tensile Strength on Various Layer Stack Sequence of Fiber Reinforced Polymer (FRP)
Authors:   UniKL – Malaysian Institute of Marine Engineering Technology, Ramli Roslin , Alisibramulisi Anizahyati ,   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, Mohamed Noor Suhailah ,   Center for Civil Engineering Studies, Universiti Teknologi MARA (UiTM), Pulau Pinang, Suharso Didik Dwi ,   Politeknik Pelayaran Surabaya, Surabaya
Published: November 2022

This paper presents the analysis of tensile strength on various layer stack sequence of Fiber Reinforced Polymer (FRP). FRP is a composite material which made of hardened or room temperature treated resin as medium. The FRP is composed with particular reinforcement materials in order to evaluate the strength. The specimens or samples were made from different combination of FRP materials which involved resin, tissue mat, chopped strand mat, woven roving, resin, catalyst, and colour pigment. The Tensile Test is carried out based on the Axial Stress Test for the same size specimen in five different combination of materials. This study has identified that the combination of Specimen 3, which combined woven roving, resin and colour pigment as the FRP materials has acquired the highest tensile strength.
The emergence of travel-related infections in critical care units
Authors: Herten Pieter-Jan , Vlieghe Erika , Bottieau Emmanuel , Florence Eric , Jorens Philippe G
Published: November 2022

Several tropical or geographically confined infectious diseases may lead to organ failure requiring management in an intensive care unit (ICU), both in endemic low- and middle-income countries where ICU facilities are increasingly being developed and in (nonendemic) high-income countries through an increase in international travel and migration. The ICU physician must know which of these diseases may be encountered and how to recognize, differentiate, and treat them. The four historically most prevalent “tropical” diseases (malaria, enteric fever, dengue, and rickettsiosis) can present with single or multiple organ failure in a very similar manner, which makes differentiation based solely on clinical signs very difficult. Specific but frequently subtle symptoms should be considered and related to the travel history of the patient, the geographic distribution of these diseases, and the incubation period. In the future, ICU physicians may also be more frequently confronted with rare but frequently lethal diseases, such as Ebola and other viral hemorrhagic fevers, leptospirosis, and yellow fever. No one could have foreseen the worldwide 2019–up to now coronavirus disease 2019 (COVID-19) crisis caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which was initially spread by travel too. In addition, the actual pandemic due to SARS-CoV-2 reminds us of the actual and potential threat of (re)-emerging pathogens. If left untreated or when treated with a delay, many travel-related diseases remain an important cause of morbidity and even mortality, even when high-quality critical care is provided. Awareness and a high index of suspicion of these diseases is a key skill for the ICU physicians of today and tomorrow to develop.
Penentu Kualitas Audit dan Peran Moderasi Komite Audit
Authors: Normasyhuri Khavid , Natalelawati Ignasia
Published: November 2022

Quality audits have an impact on the quality of good financial reports. This study aims to examine the factors that affect audit quality and see that the audit committee is able to strengthen or weaken audit quality. The research sample is manufacturing companies listed on the IDX from 2019-2021. Sampling is done by purposive sampling technique. Data analysis used logistic regression and Moderate Regression Analysis (MRA). The results of the Audit Tenure research have a negative effect on audit quality, the reputation of the Public Accounting Firm (KAP) and audit fees have a positive effect on audit quality, the audit committee weakens the influence of audit tenure on audit quality. Meanwhile, the audit committee strengthens the influence of KAP reputation and audit fees on audit quality.

Keywords: Tenure Audit; KAP Reputation; Audit Fees; Audit Quality; Audit Committee.
Peranan Sumber Daya terhadap Pengembangan Usaha Kemitraan Domba
Authors: Firmansyah Fernanda Bagus , Amam Amam , Rusdiana Supardi , Huda Agus Sholehul
Published: November 2022

Regulation of the Minister of Agriculture of the Republic of Indonesia Number 13 of 2017 concerning Animal Husbandry Business Partnerships states that livestock farming business partnerships are cooperation between livestock farming businesses on the basis of the principles of mutual need, strengthening, benefiting, respect, responsibility, and dependence. The purpose of this study was to examine the influence of economical, environmental, and social resources on the development of sheep partnership farming business. The novelty of this research is to review the development of resource-based sheep partnership farming business. The research was conducted on a sheep partnership farming business at Gumukmas Multi Farm (GMF) Jember district. The data collection method was carried out by survey, Focus Group Discussion (FGD), and observation. Research variables include livestock farming business development (Y), economical resources (X1), environmental resources (X2), and social resources (X3). Analysis of research data using the Partial Least Square (PLS) method with the help of SmartPLS 2.0 software. The PLS method generally consists of 2 (two) kinds of test models, namely the outer model and the inner model. The results obtained from the indicator test and declared valid are economical resources consisting of 4 (four) indicators, environmental resources consisting of 2 (two) indicators, and social resources consisting of 6 (six) indicators. The conclusion shows that economical resources, environmental resources, and social resources are quite influential on the development of sheep farming partnerships with an R2 value of 45.1%
ІНТЕГРАЦІЯ ЕТИЧНИХ ПРИНЦИПІВ В ІНФОРМАЦІЙНОМУ ПРОСТОРІ: МІЖКУЛЬТУРНИЙ КОНТЕКСТ ТА КОМУНІКАТИВНА ВЗАЄМОДІЯ
Authors: ГАЛУЩАК Мар’яна
Published: November 2022

Метою статті є осмислення і окреслення основних критеріїв людського спілкування та взаємовідносин, зміни чи незмінності етичних акцентів у глобальному цифровому комунікативному просторі. Основним методологічним критерієм дослідження є використання аналітичного підходу, який дає змогу рефлексивно-критичним шляхом виділити основні моменти міжособистісної комунікації на етичних засадах в інформаційно-комунікативному просторі. Наукова новизна. У статті зазначено, що сучасний світ перебуває в особливій фазі свого становлення, де велика кількість процесів, які стосуються різноманітних сфер людської життєдіяльності, починаючи від повсякденної і закінчуючи загальносвітовою, так чи інакше зазнають незворотних змін, які часто пов’язані з абсолютно новими ризиками й викликами, за своїм масштабом перевершують усе відоме досі, але, незважаючи на змінні реалії, незмінним залишається одне: вміння бути людиною, зберігати в собі людське, максимально інтегруючись у нову даність та реалії, взаємодіяти одне з одним на моральному рівні, адекватно користуючись тими інформаційно-комунікативними засобами, які перебувають у широкому доступі світової більшості, а адекватність і толерантність завжди були сферами етики, без якої самовладдя в розумах, думках, діях та словах досягло б критичної точки у тих деструктивних процесах, які властиві чи не кожним групам і суспільствам, не говорячи уже про цивілізацію. Висновки. Зосередженість уваги на соціальних взаємовідносинах, манері спілкування, добуванні інформації та вмінні нею коректно й адекватно оперувати постає вкрай актуальним питанням і важливою проблемою, бо становлення сучасного індивіда значною мірою відбувається в інформаційно-комунікативних взаємодіях, а ці взаємодії повинні включати певні етично-моральнісні норми і безумовні правила, якими потрібно вміти оволодіти та активно використовувати на практиці. Крім цього, з огляду на сучасні українські реалії вміння критично відбирати інформацію і раціонально її використовувати, вміло застосовувати дані, які з’являються щоденно на наших сторінках соцмереж, та оперувати ними є тими основними критеріями, від яких значною мірою залежать не тільки напрям розвитку окремо взятої особистості, але й майбутня змістовна наповненість європейської спільноти загалом та української нації зокрема.
The Correlation Between Students’ Vocabulary Mastery and Speaking Mastery
Authors: Ani Anry , Sinaga Yusni
Published: November 2022

The purpose of the research was to know the correlation between vocabulary mastery and speaking mastery at grade VIII students of SMP N 5 Padangsidimpuan. Type of this research was quantitative research with a correlational method. Based on calculation of the data, the researcher found that the score of rxy was more than rtable 0.737 0,423. It means the result showed that there was a significant correlation between two variables in the good category.
The Problems of Teaching Reading with Online Learning
Authors: Muflihah Muflihah , Sukirno Arif
Published: November 2022

COVID-19 pandemic change the world, especially for the education. Nearly 1.6 billion learners in the world affected by this phenomenon. So, Indonesia’s government must issue the rule of online learning for the sake of everyone’s safety. It also affects the English language learning as well, especially reading. This study is about the problems of teaching reading with online learning especially in IAIN Purwokerto, Central Java, mainly with the use of Zoom and Google Meet. The author of this article is interested and wants to know very much about it. So, he conducted the research to find the answer about it. The research used qualitative approach, and the data collection technique is interview and literature review of the journals and books. Some results are found, such as the limitation of technologies, students that don’t activate the camera during learning, the teacher can’t observe the students’ respond to the material that have been prepared, and other problems that will be explained further in this article. The author also hope that this article can help making better future of the education, especially for the online learning.
Students' Mathematic Reasoning: a Review from Jigsaw and ROPES Learning Model at Baiti Jannati Junior High School
Authors: Lubis Mara Samin
Published: November 2022

The background of this article is that the learning carried out by the teacher in the classroom only focuses on the teacher, the class condition is not effective. This study aims to see the difference between the mathematical reasoning of students who are taught using the jigsaw learning model and the ROPES (Review, Overview, Presentation, Exercise) learning model in class VIII SMP Baiti Jannati on Prisma material. This research is a quantitative research that uses the entire population of class VIII with a sample of class VIII-1 and VIII-2 with a total of 30 students in each class. This study uses a one-way ANOVA test using a description test. Based on the results of this study indicate that there is a difference between the jigsaw and ROPES learning models with Fcount Ftable; 26.89 4.07. The mathematical reasoning of students reviewed using the jigsaw learning model is better than the mathematical reasoning of students reviewed using the ROPES learning model on Prisma material in class VIII SMP Baiti Jannati.
Analisis terhadap Kesulitan Belajar Mahasiswa Teknik Informatika pada Mata Kuliah Kalkulus
Authors: Desriyati Welly , Rahmi Hanifatul
Published: November 2022

This article was a qualitative research with using phenomenology approach. The researchers were the main research instruments in this study in order to analyze the type of informatics engineering studenet’s learning obstacles in calculus subject, its causative factors and the ways to overcome the students’ learning obstacles. Researcher as the lecturer used test, questionnaire, observation sheet and interview technique to collect the data. The subject of this study was 47 students of informatics engineering study programme, while the object of this study was the students’ learning obstacles. According to the data analysis results, the findings of this study are: (1) the type of informatics engineering studenet’s learning obstacles in calculus subject are in the principle, concept, operation and fact; (2) the causative factors of informatics engineering students’ learning obstacles in calculus subject are: less using of learning media, using incorrect methods, less of study needs, the lowerness of students’ intelligence, the lowerness of students’ motivation in learning mathematics and the lowerness of students’ prior mathematical knowledge; and (3) to overcome the informatics engineering students’ learning obstacles in calculus subjectare: rearrange learning schedule at home, give guidance to the students, using variatif methods, using clear learning methods and multiplicate the supportive learning facilities.
Pengaruh Pendekatan Problem Based Learning (PBL) terhadap Kemampuan Berpikir Kreatif Matematis Siswa Kelas X SMK Putra Anda Binjai
Authors: Sari Dira Puspita
Published: November 2022

This study aims to determine whether there is an influence on students' mathematical creative thinking abilities who are taught using the Problem Based Learning (PBL) model with students using conventional learning. This research was carried out at SMK Putra Anda Binjai in the 2019/2020 academic year. The method used in this research is quasi-experimental. Sampling was done by purposive sampling. The research sample consisted of 60 students consisting of 30 students in the experimental class and 30 students in the control class. The research instrument given was in the form of a test consisting of 5 description questions. Based on the results of the study, the average score of students taught by the Problem Based Learning (PBL) learning model was higher than the average score of students taught by conventional learning. This can be seen from the average value of the experimental class 60.00 and the average value of the control class 51.00. The results of the calculation of data analysis using the t test with a value of t_count t_table (0,306 1,671) with degrees of freedom dk = 30, with a significant level of 0.05. Thus H0 is rejected and Ha is accepted, which means that the students' mathematical creative thinking ability in the experimental class is greater than the mathematical creative thinking ability of students in the control class. This means that there is an effect of using the Problem Based Learning (PBL) learning model on the mathematical creative thinking ability of class X students of SMK Putra Anda Binjai.
Desain Pembelajaran Matematika Berbasis Etnomatematika untuk Menjadikan Laboratorium Matematika yang Inovatif Di IAIN Curup
Authors: Syaripah Syaripah
Published: November 2022

The purpose of research in mathematics learning is to obtain the needs of lecturers and students of Tadris Mathematics IAIN Curup, to plan the development, design, design, design, effectiveness of ethnomathematics-based learning to make an innovative mathematics laboratory. This type of research is a mixed method that is a combination of quantitative and qualitative research. The Plomp model phase consists of an investigation phase, a design phase, a realization/construction phase, a test phase, an evaluation, and a revision and implementation phase. This research was carried out on Tadris Mathematics students of IAIN Semester IV Academic Year 2018/2019 The results of the perception questionnaire of Tadris Mathematics lecturers and students showed 72% of students and 100% of lecturers stated that the mathematics learning used so far was not appropriate. Initial design planning for the development of ethnomathematical-based Geometry Transformation teaching materials.Study book design with 5 (five) chapters consisting of 42 pages and a bibliography. The results of RPS/SAP validation with an average of 3.24 categories are quite good with slight revisions, 3.15 textbook categories are good enough so that they can be used with slight revisions and LKM with an average of 3.03 categories are quite good with revisions. The results of the practicality of the book obtained an average of 4.38 in the good/practical category, the practicality of the LKM with an average of 4.45 in the good/practical category and the practicality response of learning mathematics with an average of 91.7% which means it is very practical. The results of the effectiveness of learning mathematics obtained from observations of lecturer activities assessed by observers, obtained 84% of lecturer activities according to RPS.
IMPLEMENTASI PEMBELAJARAN BERBASIS IQRA’ DI SEKOLAH (Upaya Menerapkan Pembelajaran Berbasis Higher Thinking Order Skills)
Authors: Suhendra Ade , Dalimunthe Irwan Saleh , Muhlison Muhlison
Published: November 2022

Learning-based Iqra’ is learning that’s Iqra’ made as one of the focus on learning. Learning-based Iqra’ is one of the solutions that’s given us the answer to problems in our society now. This paper describes reading as a part of the integration of the learning process to produce a generation that has a good competence of literacy.
Quaternary Prevention and / or Hypermedicalization. Fragility (Disease) and / or Lobbying
Authors:   MedOnLine-Statte, G Colucci
Published: November 2022

Approximately 15-20% of patient-doctor meetings are defined by the latter as difficult. Difficult patients are defined as those who elicit strong negative emotions from their physicians. If not acknowledged and managed correctly, these feelings can lead to diagnostic errors, unpleasant confrontations, and troublesome complaints or legal claims.
Black carbon and other pollutants from brickfields country-wise: Impact assessment and policy guidance under welfare analysis
Authors:   [1] Social & Economic Research Institute, Ahsanullah University of Science and Technology, Dhaka, Bangladesh, Rahman Akim M. ,   [2] Policy Research Project, The Ohio State University, OH 43210, USA
Published: November 2022

The brick industry in developing world is a vast, coal burning and polluting industry. Nearly 1,500 billion bricks are produced globally each year where 87% are from Asia. China dominates the world in producing bricks using coal combustion and woods as fuels where Australia placed the last. Bangladesh placed the 5th in the world, and it mostly uses woods as fuels. These industries are owned privately. It is a type of industry that is mostly driven with business mentality without emphasizing the hygiene and health aspects where government laws are barely active in practices where rapid urbanization has been increasing demand of bricks. But, in most cases, this industry uses inefficient and dirty technology that causes environmental externalities. Brick-kilns inject huge volume of effluent gases. It causes depletion of atmospheric O2 level. Addressing the issue for policy guidance, this study first analyzes the consequences of these externalities in terms of marginal damage (MD) under neoclassical partial equilibrium demand & supply theory. It further analyzes the reasons of disparity between social-cost and private-cost by conventional marginal damage analysis. Findings show that due to gases emission from brickfields, the marginal social-costs are higher than marginal private-cost. In this economic dilemma, brick-kilns are benefiting with the expense of human-society country-wise. As it has been going on, the rises of brick-prices have been causing upward trends of welfare losses where producer surplus is dominating the total surplus. This consequential economic situation has been causing higher deadweight loss year after year. The reason is that the bricks-customers distribute this expenditure away from now more expensive bricks. Now there is an urgency for national policy actions for ensuring cleaner & sustainable brick production. On this aspect, reforestation efforts can be achieved in multi-faucets including brickfields’ charity and govt. policies on planting trees and for motivational efforts inspiring citizens of this country. These motivational efforts can be in multi-faucets: (a) inspiring “birthday celebration by planting trees”, (b) forcing to use green Tech in brick kilns and (c) conducting research in both phases of govt. and academicians where financial supports can be inspirational.
SYSTEM OF DISTRIBUTED CONTROL OF TECHNOGENIC ELECTROMAGNETIC FIELDS WITH THE USE OF INTEGRATED SENSORS
Authors:   Saint Petersburg State Forest Technical University, S. S. Kolmogorova , A. S. Kolmogorov ,   Omsk State Technical University, D. S. Baranov ,   Omsk State Technical University, S. V. Biryukov ,   Omsk State Technical University, J. N. Kolbina ,   State Hydrometeorological University, A. D. Romanovskaya ,   ETU “LETI”
Published: November 2022

The progress of all sectors of industry and global digitalization of society causes a number of problems due to the emergence of electromagnetic fields of technogenic nature, their effects on technical and biological objects. The article deals with the measurement of electromagnetic field parameters in the practical task of a decentralized "cloud" information-analytical system using new shapes of sensors as IoT-elements. The article presents the architecture of data collection from sensors of the new shapes with automatic evaluation and technical prediction. A new configuration of sensing elements and mathematical processing is presented. Also, a virtual instrument which realizes the platform with subsequent statistical evaluation. Intellectual system of data VI International scientific conference "Mechanical Science and Technology Update" 22–23 March 2022. Omsk, Russia 103 analysis in a decentralized measuring complex allows real-time assessment of critical parameters of the electromagnetic field.
METHODOLOGY FOR ENSURING THE QUALITY OF MASS PRODUCTION PRODUCTS IN THE CONDITIONS OF DIGITALIZATION
Authors:   Tula State University, O. V. Pantyukhin , E. V. Pantyukhina ,   Tula State University, E. V. Dyakova ,   Tula State University
Published: November 2022

The paper considers the proposed methodology of ensuring the quality of mass production products, which includes modern systems and methods of control, digital doubles of products and technological processes of their production using predictions of quality parameters based on artificial neural networks. Using the proposed concept will allow the company to build an integrated quality management system based on advanced methods of digitalization of production. The developed methodology is guaranteed to ensure defective production of mass production products, which are subject to increased requirements during operation.
THE EFFECT OF LASER FREQUENCY TUNING OF QUARTZ RESONATORS ON THEIR LONG-TERM STABILITY
Authors:   Omskiy Nauchno Issledovatelskiy Institut Priborostroeniya, S. V. Yermolenko ,   Omsk State Technical University
Published: November 2022

The paper examines the effect of frequency tuning of quartz resonators of thermostat by laser radiation on their long-term stability. This method of adjusting the frequency of quartz resonators can provide frequency-tuning accuracy up to 0.5 ppm, which is necessary for precision quartz resonators, including resonator-thermostat.
REDUCING THE ROUGHNESS OF THIN ALUMINUM FILMS BY ION BOMBARDMENT
Authors:   Dostoevsky Omsk State University, M. S. Khristodorov ,   OSC SB RAS, V. I. Strunin ,   Dostoevsky Omsk State University,   OSC SB RAS,   Omsk Scientific-Research Institute of Instrument Engineering, L. V. Baranova ,   Dostoevsky Omsk State University,   OSC SB RAS, N. A. Chirikov ,   OSC SB RAS, Omsk,   Omsk Scientific-Research Institute of Instrument Engineering
Published: November 2022

The results of an experiment on reducing the roughness of thin films of aluminum (Al) obtained by magnetron sputtering are presented. The paper presents a method for reducing the roughness by bombarding aluminum films with a directed beam of argon ions. Surface roughness was measured by atomic force microscopy (AFM). It is shown that ion bombardment leads to a decrease in the surface roughness of Al films.
TWO-GRID METHOD ON THE BAKHVALOV GRID FOR AN ELLIPTIC SINGULARLY PERTURBED PROBLEM
Authors:   Sobolev Institute of Mathematics, N. A. Zadorin , S. B. Shagaev ,   Dostoevsky Omsk State University
Published: November 2022

A two-grid method for the numerical solution of a singularly perturbed elliptic problem using the Bakhvalov grid is studied. A scheme of upwind differences is used,which has the property of convergence on this grid, which is uniform in a small parameter. The Seidel iterative method is used to find the scheme solution. Previously, the use of the Bakhvalov grid in the two-grid method has not been studied. It is numerically shown that the use of the two-grid method leads to a reduction in computational costs. In addition, it is shown that based on the Richardson extrapolation method, it is possible to improve the accuracy of the difference scheme.
CONTROL PROGRAM OF THE UNMANNED AERIAL VEHICLE IN THE MATLAB
Authors:   Saint Petersburg State Forest Technical University, S. S. Kolmogorova , A. A. Gavrilyuk ,   Saint Petersburg State Forest Technical University, A. O. Butusova ,   Saint Petersburg State Forest Technical University, A. Y. Nichiporuk ,   Saint Petersburg State Forest Technical University, A. D. Romanovskaya ,   ETU “LETI”
Published: November 2022

The designing, control and planning of robotic flight in projections on the environments of use for micro-aircraft is an important task. This article discusses the control of quadcopters as a special and important class of micro-aircraft. The development of the direction of implementation of autonomous control process of unmanned aerial systems establishes a number of problems associated with mathematical and software modeling. The paper presents the process of modeling the motion control of a one-dimensional quadcopter projection. The mathematical functional relationships of the quadcopter control taking into account the physical laws in one-dimensional implementation are implemented, as well as the control program on the MATLAB platform, taking into account such influencing factors as the parameters of the altitude controller, proportional and derivative gain, stabilization time. A comparative analysis on the stabilization time at different coefficients within the simulated practical tasks is proposed. The developed dynamic one-dimensional model synthesizes the systems of mathematical and software parts of the influence parameters on the operation of unmanned aerial vehicles.
COMPARATIVE EVALUATION OF THE THERMAL EFFICIENCY OF FUELS OF DIFFERENT FRACTIONS OF AN ELECTRIC TORCH DEVICE, BY THE NONPARAMETRIC MANN-WHITNEY CRITERION
Authors:   Military Academy of Logistics named after General of the Army A.V. Khrulev of the Ministry of Defense of the Russian Federation, I. V. Materi , A. V. Kolunin ,   Military Academy of Logistics named after General of the Army A.V. Khrulev of the Ministry of Defense of the Russian Federation, M. S. Korytov ,   Siberian State Automobile and Highway University, S. A. Agalakov ,   Omsk State University F.M. Dostoevsky
Published: November 2022

The article describes a quantitative analysis of the numerical values of thermal efficiency obtained in a full-scale experiment under conditions of negative ambient temperatures. The essence of quantitative analysis is the statistical processing of measurement results. The nonparametric Mann-Whitney test was chosen as a mathematical statistics tool. The experiment consisted in comparing the thermal efficiency of an electric torch device of a diesel engine when burning two fuels of different fractions (diesel fuel and automotive propane). The obtained results of the experiment are represented by two general sets of flow air temperatures: when the electric torch device is operating on diesel fuel and on propane automobile. Consistency and adequacy of the results of quantitative and qualitative analyzes determined the advantages of fuels of light fractional composition in relation to diesel fuel.
DISPERSION OF AEROSOLS IN THE ATMOSPHERE: NUMERICAL MODELING IN SPHERICAL COORDINATES
Authors:   Research Institute for Development of Digital Technologies and Artificial Intelligence, N. К. Ravshanov , D. D. Akhmedov ,   Research Institute for Development of Digital Technologies and Artificial Intelligence
Published: November 2022

The paper deals with development of air pollutants dispersion process in spherical coordinates based on the provisions of the semi-empirical theory of turbulent diffusion. There was developed effective numerical algorithm in order to solve the formulated three-dimensional non-stationary problem. On the basis of proposed mathematical model, there was also developed a software tool for assessing and predicting the ecological conditions of industrial territories.
Modeling the process of active aerosol particles dispersion in the atmospheric boundary layer
Authors:   Research Institute for Development of Digital Technologies and Artificial Intelligence, N. K. Ravshanov , N. U. Narzullaeva ,   Research Institute for Development of Digital Technologies and Artificial Intelligence, F. A. Muradov ,   Research Institute for Development of Digital Technologies and Artificial Intelligence
Published: November 2022

The paper deals with the development of a mathematical model of the process of propagation of active aerosol particles in the boundary layer of the atmosphere. The focus is on the physical behavior of aerosol particles under the influence of atmospheric humidity, which creates fluid binding forces and electrostatic interactions between particles. Through a water absorption experiment, a correlation was obtained between the relative humidity and the water content of the particles. With the help of theoretical derivation, a relationship between relative humidity and humidity ratio was established to calculate liquid overlap forces.
THE USE OF THE CONVERGENT CROSS MAPPING METHOD IN THE PROBLEMS OF STUDYING THE CROSS-DEPENDENCE OF TEMPERATURE SERIES
Authors:   National Research University Higher School of Economics, O. V. Stukach ,   Novosibirsk State Technical University, P. A. Zorin ,   LLC "CSO", I. A. Ershov ,   Novosibirsk State Technical University
Published: November 2022

The dynamics of temperature series in two problems of temperature measurement by distributed optical sensors and determination of the measure of the dynamic dependence of heat consumption of residential buildings and outdoor temperature are investigated by the method of convergent cross mapping. It is shown that the convergent cross mapping method has prospects in energy efficiency evaluation and can be used to compare buildings by their characteristics, as well as to further solutions to energy efficiency improving.
ON COMPLEX LOADING OF SHELL OF REVOLUTION
Authors:   Institute of Mechanics and Seismic Stability of Building named after M. T. Urazbaeva, Rustam Abirov
Published: November 2022

Problem of loading of shell or revolution under complex loading are presented in this issue. Calculation was provided by taking into account of approximation for plasticity functional and by traditional incremental plasticity.
DESIGN VARIANTS OF THE VIBRATION PROTECTION SYSTEM OF THE OPERATOR'S SEAT
Authors:   The Siberian State Automobile and Highway University, I. E. Kashapova , M. S. Korytov ,   The Siberian State Automobile and Highway University, V. S. Shcherbakov ,   The Siberian State Automobile and Highway University, V. V. Titenko ,   Omsk State Technical University, Y. A. Kolunina ,   Omsk State Technical University
Published: November 2022

Protection from the negative impact of vibration on the human operator of a mobile machine is an urgent task today. Among the existing methods of vibration isolation, the use of vibration protection systems with a section of quasi-zero stiffness is promising. In the present work, the constructive varieties of the vibration protection system of the seat of the human operator, developed in SibADI, are considered. As an example, the calculation of the spring tension required to compensate for the gravity of the seat with the operator is given.
BUCKLING OF UNDERGROUND PIPELINES AND APPROPRIATE COUNTERMEASURES AGAINST LIQUEFACTION-INDUCED UPLIFT OF PIPES
Authors:   Institute of Mechanics and Seismic Stability of Building named after M. T. Urazbaeva, B. Mardonov , I Mirzaev ,   Tashkent State Transport Universit, N. A. Nishonov ,   Institute of Mechanics and Seismic Stability of Building named after M. T. Urazbaeva, E. V. An ,   Institute of Mechanics and Seismic Stability of Building named after M. T. Urazbaeva, E. A. Kosimov ,   Institute of Mechanics and Seismic Stability of Building named after M. T. Urazbaeva
Published: November 2022

The process of lifting an underground straight pipeline and a complicated pipeline with a ɉshaped part located in liquefied soils is studied in the article. The problem of pipeline stability loss is considered. The pipeline is affected by Archimedes force in the liquefied soil zone and the longitudinal compressive force that appears due to the temperature and pressure of the transported product. The problem is solved by the finite element method. The results are presented in the form of graphs of changes in the values of transverse displacements along the coordinate depending on the pipeline geometric dimensions and the soil rheological properties. Analysis of the graphs showed that the ɉ-shaped part is a damper in the process of pipeline buckling.
STUDY OF THE HYDRAULIC REMOTE CONTROL MECHANISM OF MOBILE HYDRAULICALLY DRIVEN MACHINES
Authors:   Omsk State Technical University, V. V. Syrkin , I. P. Zgonnik ,   Omsk State Technical University, I. N. Kvasov ,   Omsk State Technical University, I. A. Abramova ,   Military Academy of Logistics named after Army General A.V. Khrulev of the Ministry of Defense of the Russian Federation, Yu. F. Galuza ,   BFT-Holding
Published: November 2022

The article considers the possibility of increasing the specific capacities of hydraulic drives by increasing the operating pressures, taking into account the limitations of heating hydraulic machines. The source of more than half of the heat released in hydraulic pumps with remote control is a makeup pump with an overflow safety valve, which serves to compensate for leaks of the working fluid of the hydraulic control mechanism. It is possible to reduce the heating of hydraulic machines by reducing the installation power of this pump, which can lead to an increase in the amplitude of pressure fluctuations of this pump in the range of operating flow rate of the control mechanism, which, in turn, will lead to a change in the static and dynamic characteristics of the hydraulic control mechanism.
EXPERIMENTAL VERIFICATION OF AN ALGORITHM FOR OPTIMIZING THE INTERNAL STRUCTURE OF SAMPLES OBTAINED BY FDM AND SLA PRINTING METHODS OPERATING UNDER THREE-POINT BENDING CONDITIONS
Authors:   Omsk State Technical University, S. V. Shalygin , G. S. Russkikh ,   Omsk State Technical University
Published: November 2022

The work is devoted to the description of the algorithm for the formation of the internal structure of the product obtained using FDM technology considering the stress-strain state, based on the use of isosurfaces of equivalent stresses obtained on a pre-calculated stress-strain state of the sample in an elastic isotropic formulation. The main purpose of the work is to verify the previously presented algorithm for optimizing the internal structure of 3D printed samples obtained by FDM printing, operating under three-point bending conditions. The data obtained earlier are based on numerical experiments using finite element analysis methods in Ansys WB. In this paper, the assumption made for numerical experiments are consistently verified for each conditional step of the optimization algorithm. As well as experimental tests of optimized samples with isotropic and anisotropic properties
PARTICLE SIZE INFLUENCE STUDY ON THE THERMOPHYSICAL PROPERTIES OF THE NANOFLUID
Authors:   Omsk State Technical University, E. N. Slobodina , A. G. Mikhailov ,   Omsk State Technical University, E. A. Rogachev ,   Omsk State Technical University, I. A. Podlipsky ,   Omsk State Technical University
Published: November 2022

The article considers the influence of the size of solid particles on the thermophysical properties of a nanofluid. Experimental study results of particulate matter silicon dioxide and carbon black for determining surface quality and dimensions using a scanning electron microscope and a laser diffraction analyzer. The results of computational studies are given. Dimensional the influence of solid nanoparticles on the relative change in the viscosity of the nanofluid is shown. The relative change in the thermophysical properties of a nanofluid on the size of solid nanoparticles is graphically presented, and the subsequent effect of these properties on the efficiency of a fire-tube boiler is considered.
INVESTIGATION OF THE MODES OF OPERATION OF A POLYMER DILATOMETRIC DRIVE
Authors:   Omsk State Technical University, M. V. Smagin , E. E. Kolyagin ,   Omsk State Technical University, V.V. Sudnev ,   Omsk State Technical University, I. S. Vavilov ,   Omsk State Technical University
Published: November 2022

The research consists in the development and testing of a dilatometric actuator of a shut-off mechanism (valve), the principle of operation of which is based on the thermal expansion (elongation) of materials. The study of its temperature and expansion modes of operation. Based on the analysis of the empirical data of the study, the paper shows that with an electrical consumption of 1.8 W, the drive, within 163 seconds, produces an elongation of 0.45 mm, which is a third of the length of the stem of the valve used. At the same time, the elongation process itself begins almost immediately – after 2.3 s.
INCREASE IN THE INTER-REPAIR SERVICE LIFE SPRAY UNIT FOR PRODUCING COPPER-BASED FINE POWDERS
Authors:   State Research and Production Powder Metallurgy Association, A. Ph. Ilyushchanka ,   O.V. Roman Powder Metallurgy Institute, I. M. Charniak ,   O.V. Roman Powder Metallurgy Institute, A. R. Kusin ,   O.V. Roman Powder Metallurgy Institute, R. A. Kusin ,   Belarus State and Agrarian Technical University, Y. O. Filippov ,   Omsk State Technical University
Published: November 2022

The design of spray metal powder spray nozzle with a replaceable ceramic insert and a zero attack angle is presented and the results of its tests confirming the using the proposed design expediency are presented. It has been found that the nozzle has a long service life before repair, a high percentage of output of small fractions (at 75% of particles with sizes less than 160 ȝm) and a high sphericity of the resulting powder (values of the particle shape factor of the powder are in the range of 0.95-0.97).
Interactions verbales durant Minetest : ce qu’échangent les élèves durant une leçon d’histoire
Authors: RODI Mireille , BRUMEAUD Quentin , GEOFFRE Thierry , Alvarez Lionel
Published: November 2022

Les environnements numériques sont souvent exploités dans l’enseignement/apprentissage (E/A) pour augmenter l'engagement des apprenants via une approche de game-based learning. C'est le cas de Minetest (The Minetest Team, 2022), une solution ludique de type bac à sable dans laquelle les élèves peuvent se retrouver dans le même monde virtuel pour réaliser une mission commune. En coopérant, les interactions verbales entre élèves – centrées sur la manipulation du jeu, sur le contenu didactique ou sur les enjeux relationnels – s'enchaînent et orientent les actions de chacun. À l’aide d’un corpus de 6 dyades d'élèves de 6ème Harmos (env. 9 ou 10 ans) dont les interactions ont été filmées et transcrites au cours de deux séances sur deux jours consécutifs, l’analyse des interactions verbales permet d'appréhender une progression en quantité et/ou qualité des verbalisations.