Mathematical Sciences Research Articles

Preface to the Proceedings of the 10th Asian Physics Symposium (APS) 2023

The 10th Asian Physics Symposium 2023 (APS 2023) was held on 3-4 October 2023, in Institut Teknologi Bandung, Indonesia with the theme of “The Role of Physics in Supporting Sustainable Development Goals” and was implemented in a hybrid manner in purpose of increasing sustainability of this scientific event, accessibility and also increasing participants engagement. This event provides the widest possible opportunities for the young Indonesian scientists to present the latest research results in the physics and its related fields, to foster research collaborations with well-known overseas scientists and to extend international research networking in the future.The 10th APS 2023 is organized by the Undergraduate and Graduate Programs in Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, in collaboration with Physical Society of Indonesia (PSI). The program of APS 2023 features 7 invited talks in 45 minutes for each plenary session and 116 contributed oral presentations in 15 minutes of presentation including the Q&A session, which come from several countries: Japan, Malaysia, Turkey and Indonesia. All abstracts and papers have been reviewed by selected reviewers from the APS committee.I would like to express my sincere appreciation to Prof. Wahyu Srigutomo, Dean of Faculty of Mathematics and Natural Science (FMIPA) ITB for the support and advice in preparing this scientific event and to Institute of Research and Community Service (LPPM) ITB Support Program for organizing the Year International Conference 2023.I would like to express my gratitude to Prof. David Andrew Bradley (Sunway University, Malaysia), Assoc. Prof. Seda Aksoy Esinoglu (Istanbul Technical University, Turkey), Prof. Alexander Iskandar (Institut Teknologi Bandung, Indonesia), Prof. Kayoko Yamamoto (University of Electro-Communications, Japan), Prof. Fumiyuki Ishii (Kanazawa University, Japan), Dr. Hijaz Kamal Hasnan (University of Malaya, Malaysia), and Prof. Nandang Mufti (University of Malang, Indonesia) as the Keynote speaker for sharing the knowledge and research to all the participant in APS 2023. I would like to say my deepest thanks to Prof. Agung Nugroho (Institut Teknologi Bandung, Indonesia), Dr. Ahmad Ridwan Nugraha (National Research and Innovation Agency, Indonesia), Prof. Camelia Panatarani (Padjadjaran University, Indonesia), Prof. David Marpaung (University of Twente, the Netherland), Prof. Ding Lu (Institute of Materials Research and Engineering- A*Star, Singapore), Dr. Dwi Irwanto (Institut Teknologi Bandung, Indonesia), Prof. Fatimah Arofiati Noor (Institut Teknologi Bandung, Indonesia), Dr. Freddy Haryanto (Institut Teknologi Bandung, Indonesia), Prof. Halim Kusumaatmaja (Durham University, England), Prof. Husin Alatas (Institut Pertanian Bogor, Indonesia), Prof. I Made Joni (Padjadjaran University, Indonesia), Prof. Khairurrijal (Institut Teknologi Bandung, Indonesia), Prof. Mitra Djamal (Institut Teknologi Bandung, Indonesia), Prof. Rizal Kurniadi (Institut Teknologi Bandung, Indonesia), Dr. Satria Zulkarnaen (Tokyo University of Agriculture and Technology, Japan), Prof. Sidik Permana (Institut Teknologi Bandung, Indonesia), Prof. Triyanta (Institut Teknologi Bandung, Indonesia), Prof. Umar Fauzi (Institut Teknologi Bandung, Indonesia), Prof. Widayani (Institut Teknologi Bandung, Indonesia), Dr. Yuliati Herbani (National Research and Innovation Agency, Indonesia), Prof. Yudi Dharma (Institut Teknologi Bandung, Indonesia) and Prof. Zaki Su’ud (Institut Teknologi Bandung, Indonesia) for their willingness as an advisory board to give guidance and advice for the implementation of this scientific event.Finally, I would like to say thanks to all the organizing committee members and reviewers for their excellent work and all of authors for their valuable contributions in APS 2023.Bandung, January 2024Chairman of APS 2023,Dr. Eng. Priastuti WulandariFaculty of Mathematics and Natural Sciences, Institut Teknologi Bandungpwulandari@itb.ac.idList of Advisory Board of the 10th Asian Physics Symposium (APS) 2023, Technical Committee of the 10th Asian Physics Symposium (APS) 2023 are available in this Pdf.

At the origins of the system of extracurricular activities in technical universities in Russia. Extracurricular work with students of the Navigation School in 1701-1705.

The subject of the study is the initial stage of the history of the School of Mathematical and Navigation Sciences as one of the first Russian secular technical educational institutions. Attention is focused on those aspects of the formation of the School that had not previously been the subject of special research by historians. Based on the complex of documents of the Armory Chamber identified and introduced into scientific circulation, it is analyzed which disciplinary and offenses the first students of the school committed and why. Analyzing the specific court proceedings conducted in the Armory Chamber on the fact of these violations, the authors show how extracurricular and educational work with students was organized. The role of Leonty Magnitsky, an outstanding Russian scientist, mathematician, author of the first fundamental work on arithmetic, in organizing educational work with navigation students, is being clarified. The research was carried out using traditional methods for historical research, special attention was paid to the identification and introduction into scientific circulation of clerical sources on the chosen topic. As the study showed, the students of the School of Mathematical and Navigation Sciences came from various estates and regions of the Russian state. Once in Moscow, many of them found themselves in a social environment that was not familiar to them, faced temptations that were difficult for them to resist. In this regard, the teachers of the School, and first of all Leonty Magnitsky, paid great attention to educational work among students. An active group of schoolchildren was formed, who, on the instructions of teachers, monitored the behavior of their comrades. For the revealed violations, the perpetrators were severely punished in public. Extracurricular work contributed to the formation of a unified system of values, instilling interest in learning, instilling discipline, and eliminating vices among students. It has become an important factor in achieving the main goal for which the School was established: to train navigation specialists necessary to create a navy in Russia in the shortest possible time.

Potential of K-means clustering for preliminary labeling of acoustic data samples

Labeling data for use in supervised learning algorithms can be a long and arduous process, especially for large datasets. This work explores if an unsupervised k-means clustering algorithm can act as a tool to efficiently obtain preliminary labels for large acoustic datasets. This approach is tested on vector sensor data from Monterey Accelerated Research System (MARS). To determine the optimal number of clusters in the k-means algorithm, the silhouette method is used. The clustering of different types of input data will be compared. Specifically, time average spectra from the pressure sensor, the acoustic particle velocity, and intensity will be considered. In addition, the results of clustering data from different times of day and months over a two-year period will be compared. Results of the clustering will be presented along with an assessment of the potential for using a k-means clustering as a preliminary labeling tool for large acoustic sets. [Undergraduate research funded by the College of Physical and Mathematical Sciences as Brigham Young University.]

Памяти Георгия Ивановича Ерошкина

In May of this year (May 22, 2024), the distinguished scientist, the candidate of physical and mathematical sciences (Ph.D.) Georgy Ivanovich Eroshkin would have turned 80 years old. Georgy Ivanovich was one of the leading experts in the field of classical and relativistic celestial mechanics. He was the leading researcher at the Central Pulkovo Astronomical Observatory of the Russian Academy of Sciences (GAO RAS), in 2000-2010 years he was the deputy director of the GAO RAS and head of the Department of Celestial Mechanics at the GAO RAS. He obtained a number of fundamental results in the field of mathematical modeling of the motion of large bodies of the Solar System and the construction of high-precision methods of numerical integration. Georgy Ivanovich’s scientific results have received international recognition. He died five years ago.

Beatboxing: Teaching technical acoustical concepts through pop culture

The motivation for this presentation is to demonstrate that vocal percussion, or “beatboxing,” can be a rich method of teaching and demonstrating various introductory acoustical concepts. Beatboxing can be an entertaining way to demonstrate the different acoustical sources of energy—namely burst, noise, and voice—and how they can be combined to create familiar and unfamiliar phonemes, such as the “PF” snare. It also provides an engaging way to introduce the anatomy of the vocal tract as the students can see and hear how vibrating different parts of the mouth and throat (e.g., vocal cords, epiglottis, vestibular folds, lips, etc.) alter the sound. Finally, beatboxing can be used to demonstrate the source-filter model of speech production through altering the sound source in the throat and displaying how to change your mouth shape to produce different formant-altering effects, such as the rapid formant shifting that gives a record scratch its characteristic sound. Beatboxing provides an entertaining and effective way to demonstrate technical concepts to students in an artistic format which captures the attention, especially of younger audiences. [Undergraduate research supported by the College of Physical and Mathematical Sciences, at Brigham Young University.]

Analysis of the linear regime of a power amplifier for underwater acoustics experiments

When transmitting sound in a laboratory water tank, a power amplifier is needed to boost the generated signal. If the amplitude of the generated signal is too high, the power amplifier introduces harmonics into the transmitted signal. Measurements were taken to determine the maximum input amplitude for which the TEGAM 2350 power amplifier, which provides x50 amplification, has a linear response. To evaluate when harmonics are generated, acoustical measurements were taken in our acrylic 1.22 m by 3.66 m tank filled with 0.5 m of water. Custom LabView software generated a chirp with a specified amplitude. This signal was sent through the power amplifier and an impedance matching transformer to a B&K 8103 transmitter. The sound was received on the B&K 8103 hydrophones. Both were attached to two different UR10e robots that could be positioned throughout the tank. The receiver hydrophone was moved to three different locations in the tank for a variety of chirp amplitudes to find the maximum amplitude without harmonic generation. Results of these measurements are shown for three frequency bands: 10–50 kHz, 50–100 kHz, and 100–150 kHz . [Undergraduate research supported by the College of Physical and Mathematical Sciences, Brigham Young University]

Characterizing the absolute sound levels of ambient noise in a water tank

The underwater acoustic measurement tank used at Brigham Young University is affected by several external sound sources which, although easily identified or hypothesized about on a superficial level, must be investigated in order to determine their specific effects on data collection. Therefore, our goal is to characterize the absolute sound levels of these external acoustic sources. The measurements are conducted using B&K and TC4038 hydrophones. Data are collected over frequency bands within the “flat” range of these hydrophones, facilitating the consistent identification of ambient sounds across several bands. Measurements are taken at various points of the tank in order to determine to what extent tank location affects the ambient sound. Data in Volts are converted to Pascals by applying sensitivity values. To evaluate the accuracy of levels obtained, the same method is applied to the signal from a known source and compared to the levels obtained via a deconvolution approach. The conclusions of this study are applicable in obtaining sound levels in our own tank and in other environments (e.g., aquariums). [Undergraduate Research supported by the College of Physical and Mathematical Sciences, Brigham Young University]

Studi Eksploratif Mengenai Kadar Garam Tradisional Di Kampung Garam Kabupaten Sikka

This study aims to determine the levels of NaCl, to compare with the Indonesian National Standard and to see the influence of the environment and the cooking process on traditional salt produced by salt farmers in Kampung Garam, Sikka Regency. This research was conducted in Kampung Garam, Sikka Regency and the Mathematics and Natural Sciences Laboratory of the Muhamadiyah Maumere. The sample of this research is 3. The sampling technique used is purposive sampling. This study uses a qualitative exploratory method. After the data is collected, it is followed by data analysis, namely by data reduction, data presentation, triangulation and drawing conclusions. Based on the research results, the NaCl content in sample A was 90.38%, salt samples B and C were 85.71% and 79.37%. The process of making salt in Uneng City includes several stages: 1) preparation of raw salt raw materials; 2). coarse salt is transferred in a filter container poured with water; 3) this coarse salt drained water is collected in a bucket; 4) salt water is cooked in a container that has been prepared at 90°C; 5) after a few hours, salt crystals form; 6) and salt drying is done by filtering. Therefore, the results of the study concluded that the quality of salt was seen from the NaCl content produced from three locations in Salt Village, Sikka Regency using the evaporation method with the help of fuel heat according to (SNI 4435-2017) on the basis of dry weight (adbk) for sample A including quality K2 salt (medium quality), samples B and C belong to K3 salt quality (low quality) and there are environmental influences and the salt cooking process on production so that it is not suitable for consumption.

Intelligent solutions in education: How inclusive the Moroccan Digital Classrooms project is for different social groups

<p>The global changes caused by the health crisis of the COVID-19 coronavirus pandemic have significantly impacted education all over the world. Schools today have had to adopt distance learning models using digital tools to ensure the continuity of educational systems in different circumstances. For this reason and to ensure the continuity of education even in the event of future disruptions in Morocco (war, pandemic, natural disaster...). The Minister of National Education for Preschool and Sport has unveiled an initiative to establish digital classrooms within the educational institutions of the Kingdom. This innovative pedagogical approach, grounded in the utilization of digital tools, is specifically designed to bolster the instruction of science subjects, (Mathematics, Physics, and Life and Earth Sciences). This digital educational transformation has emerged as a highly suitable mode of learning, catering to a diverse array of social groups, including individuals with disabilities and refugees. The primary objective of this research is to assess the influence of digital classrooms on the performance of science educators operating within the Rabat Sale Kenitra region. The intention is to gauge how this technological implementation has affected their teaching methods and overall effectiveness. Furthermore, this study seeks to gauge the progression of this educational transformation and advocate for the wider adoption of digital pedagogy, extending its incorporation into the instructional strategies of other subjects. The ultimate goal is to promote inclusivity and level the playing field for all learners, ensuring equal educational opportunities for every student.</p>

A preface

The 2nd International Conference Physics And Applied Physics (ICP & AP) 2023 Welcome to The 2nd International Conference Physics And Applied Physics (ICP & AP) 2023, presented by Faculty of The Mathematics and Natural Sciences Universitas Sumatera Utara.Welcome to all keynote speakers, Dr. Buddha Deka Boruah from University College London, UK, Prof. Ming Way Lee from National Chung Hsing University, Taiwan, Assoc. Prof. Dr. Mohd. Mustafa Awang Kechik from Universiti Putra Malaysia, Malaysia and Prof. Dr. Timbangen Sembiring, M.Sc from Universitas Sumatera Utara, Indonesia. This year the The 2nd (ICP & AP) 2023 theme is “Enhance An Innovation of Physics Research for Competitive Dignivite Nation In Society Revolution 5.0”. It serves as a beacon guiding us through the sea of information and ideas that we will navigate over the next few days. It reminds us that, in an ever changing world, we must come together to explore new horizons and chart a course toward a better future.Over the course of this conference, we will have the opportunity to engage in enlightening discussions, exchange groundbreaking research, and forge lasting connections with fellow participants. Our speakers, panelists, and presenters have poured their hearts and minds into their work, and I have no doubt that the insights and knowledge shared here will leave a lasting impact on each and every one of us. In addition to our scheduled sessions, we have created spaces for informal networking and collaboration. I encourage you all to take full advantage of these opportunities to connect with your peers, share your experiences, and ignite new ideas.List of committee, participants are available in this PDF.

Synthesis and Characterization of Hexathiosianatoiron(II) [Fe(NCS)6] 4- Complex Compound and Tetrapyridindithiosianatoiron(II) [Fe(NCS)2(Py)4] Complex Compound

This research aims to synthesize and characterize the complex compounds Hexathiocyanatoiron(II) [Fe(NCS)6] 4- and Tetrapyridinedithiocyanatoiron(II) [Fe(NCS)2(Py)4]. The synthesis of these complex compounds was conducted in the Chemistry Laboratory, Faculty of Mathematics and Natural Sciences, Medan State University, while magnetic susceptibility measurements were carried out using the Magnetic Susceptibility Balance (MSB) instrument in the Inorganic Chemistry Laboratory, Bandung Institute of Technology. The complex compound synthesis involved the reaction of Iron(II) sulfate heptahydrate with Potassium thiocyanate and Pyridine compound in a 1:2 and 1:2:4 molar ratio. The synthesis process was conducted through a direct reaction method in a polar solvent. The obtained results include Hexathiocyanatoiron(II) complex compound, [Fe(NCS)6] 4-, which is pale yellow crystalline with a yield of 32.76%, and Tetrapyridinedithiocyanatoiron(II) complex compound, [Fe(NCS)2(Py)4] which is dark purple crystalline with a yield of 52.62%. These compounds exhibit a melting point of 219℃. Magnetic susceptibility measurements using the MSB instrument revealed a magnetic susceptibility of 6.69 BM (paramagnetic) for the Hexathiocyanatoiron(II) complex[Fe(NCS)6] 4-, and a magnetic moment of 5.61 BM (diamagnetic) for the Tetrapyridinedithiocyanatoiron(II ) complex [Fe(NCS)2(Py)4].

Physicochemical and sensory characteristics of instant red ginger from various volumes of added water

The aim of this research is to obtain the right volume of water in ginger juice extract that has the best effect on the physicochemical and sensory properties of instant ginger. The research was carried out from March to May. The location of this research was carried out at the Agroindustry Laboratory, Faculty of Agriculture and Chemistry Laboratory, Faculty of Mathematics and Natural Sciences, Tadulako University, Palu. Research parameters include yield, water content, pH test, antioxidant activity and sensory tests with ginger juice extract and water treatment formulations, namely, (100g:100mL), (100g:150mL), (100g:200mL), (100g:250mL), (100g:300mL). The research results showed that the ratio of ginger juice extract and water at an added volume of 300 mL of water provide the best physicochemical and sensory characteristics of instant ginger drink. Yield, antioxidant activity, aroma, taste, preferences have a tendency increases with increasing water volume, while water content, pH and IC50 decrease.

Characteristics of Students Engaged in Spontaneous Problem-Posing

Spontaneous problem posing is a basic concept of spontaneous mathematical thinking and science learning. Students generate problems without systematic encouragement and pose problems based on the student's desire to develop their skills. As a result, they can serve as important markers of constructive mathematical and science engagement, particularly affective engagement, for problem solvers and their classroom communities. We used a qualitative approach to analyze student characteristics, especially in the affective domain, when presenting random problems. We used an observational approach and experience sampling in each class to observe students' engagement in spontaneous problem posing both individually and in groups. The findings revealed that each student showed different characteristics when presenting problems suddenly (spontaneous problem posing). The submission of the first subject problem was categorized as problem-as-exercise, satisfying the characteristics of spontaneous originality, where constructive emotional experiences impressed more on the teacher, while negative emotional experiences impressed more on oneself (self), classmates, and mathematical activities. The submission of the second subject problem is classified as a problematic problem, fulfilling the characteristics of spontaneous originality. Negative emotional experiences are more visible in me (myself), while constructive emotional experiences are more visible in teachers, classmates, and math activities

The 'Courant Hilton': building the mathematical sciences at New York University.

This essay explores how mid-twentieth-century mathematicians at New York University envisioned their discipline, cultural identities and social roles, and how these self-constructed identities materialized in the planning of their new academic building, Warren Weaver Hall. These mathematicians considered their research to be a 'living part of the stream of science', requiring a mathematics research library which they equated to a scientific laboratory and a complex of computing rooms which served as an interdisciplinary research centre. Identifying as 'scientists', they understood their societal value to be that of researchers, outputting mathematics research valuable to the natural sciences, the emerging field of computer science and the United States government and military, as well as educators. When the building opened in 1965, it was touted by the university administration as an 'example of excellence'; it later, in 1970, became the site of heated negotiations when university student and faculty protestors staged a sit-in rebuking the Atomic Energy Commission's Computing Center housed on the second floor. A close study of the correspondence between the mathematicians and their peers in the university's administration, private foundations, government agencies and an architectural firm not only illuminates the day-to-day work practices of this eminent group of mathematicians, but also sheds light on their own self-constructed academic and social identities within their contemporaneous Cold War culture.

Produksi Enzim Spesifik Xilanase pada Variasi Suhu Konsorsium Trikultur Bakteri Termofilik

Xylanase is an extracellular enzyme that is capable of hydrolyzing xylan (hemicellulose) into xylose and xylo-oligosaccharides. Xylanase can be produced by microbes through a fermentation process, the microbes used are thermophilic bacteria. Thermophilic bacteria are microorganisms that are capable of producing thermostable enzymes through fermentation. The bacteria used are MSS11, MS 16 and MS 18. These thermophilic bacteria can live at temperatures above 45°C-80°C. To determine specific enzyme activity, enzyme and protein activity values were tested using a 540 nm (enzyme) and 750 nm (protein) septovotometer. The method used in this research is descriptive in triplicate. The research was carried out at the Microbiology Laboratory, Faculty of Mathematics and Natural Sciences, Padang State University on December 23 2023. Beechwood medium which had been mixed with MSS 11, MS 16, and MS 18 bacteria was then incubated at temperatures of 55℃, 65℃ and 75℃ so that specific enzyme activity was obtained. Of these three temperatures, the optimum specific enzyme activity of xylanase is 65℃, where the specific enzyme value obtained at 65℃ is 3.31 U/mg. Meanwhile, at low temperatures, namely at 55℃, the enzymatic reaction is slow, namely it has an enzyme activity value of 1.02 U/mg. Finally, at a temperature of 75, there was a decrease in specific enzyme activity, where the specific enzyme activity value was 3.12 U/mg.

FORMATIVE ASSESSMENT IN MATHEMATICS SCIENCES

The Learning Assessment Process in the science of mathematics is the topic of this discussion, it has its starting point in the universe of Education, whose delimitation takes place within the scope of Brazil, in which it perceives the expressions of the assessment of school Learning. Asking how you identify this process. The objective is to understand the opportunities brought by this theme to reflect on the subject. And, to achieve this, it is necessary to present concepts of Learning Assessment and pedagogical practice, understand their contributions to teaching and show the aspects of this application. The methodology is bibliographic, the search was for the terms “Process” “Evaluation” in “mathematics”, collecting samples from the universe informed in the Scielo and Google Scholar search bars. At the end, we review the text, realizing some points considered highly relevant to elucidating the problem, realizing that the assessment of school learning has been the subject of constant discussions within the educational scenario, presenting itself as an inexhaustible source of questions that are raised within the school community.

UNO's Sustainable Development Goals in academic courses: a pilot analysis on the programs of an Italian university.

Universities are critical in educating tomorrow's citizens and achieving the Sustainable Development Goals of the United Nations Organization. The aim of this study was to investigate the integration of these goals in the curricula of an Italian university. Cross-sectional study. In February 2021, as part of the annual Syllabus preparation for each course, the teaching staffs at the University of Udine (Italy) were asked to complete an additional section in which they could indicate up to three Sustainable Development Goals for their courses. Descriptive statistics, Chi-square test and logistic regression were performed to determine whether the professors' sex, age, or department affected the likelihood of mentioning Sustainable Development Goals. In 723 courses, 360/1040 professors 59% male, mean age 53 years (range 30-73), mentioned one (29%), two (23%), or three (31%) Sustainable Development Goals. No Sustainable Development Goals were mentioned in 16% of courses, the majority of which were from the Mathematical, Computer and Physical Sciences Department (58%). The top six Sustainable Development Goals quoted were: Good health and well-being (35%), Responsible consumption and production (22%), Quality education (17%), Industry, innovation and infrastructure (13%), Gender equality (13%), Decent work and economic growth (13%). The least frequently mentioned Goal was Life below water (1%). Women (p<0.0001) and senior professors (p=0.0148) were more likely to consider at least one of the Sustainable Development Goals, while Mathematical, Computer and Physical Sciences Department showed a negative correlation (p<0.0001). Gaps were identified with respect to specific Sustainable Development Goals, but discrepancies between departments may indicate deficits in respondent awareness. A transparent description of the Sustainable Development Goals in courses is recommended, to increase students' and university's engagement in sustainability.

Physicochemical Analysis Using Gas Chromatogrphy Mass Spectrophotometer (GCMS) on the Quality of Citronella Oil (Cymbopogon nardus L.)

Indonesia is known as a country that has biological forests which can be used as a source of essential oils. The levels of chemical compounds that make up citronella oil are not fixed and depend on several factors such as distillation. Distillation using traditional methods is a production process that has been identical for generations used by farmers, usually this distillation uses wood fuel and takes 5 hours. Meanwhile, distillation with electrical energy only takes 4-5 hours. This research was conducted at the Laboratory of Chemical Analysis, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Banda Aceh. This research was conducted from January 2023 to June 2023. The results showed that distillation using the traditional method had 15 chemical compounds and consisted of 3 active ingredients, namely citronellal (42.48%), geraniol (17.60%) and citronellol ( 13.67%) while the results of the distillation by the electric method have 21 compounds and also consist of 3 active ingredient components, namely citronellal (40.87%), geraniol (16.53%) and citronellol (17.68%).

Preface

The 4th Edition of the International Altamira Materials and Devices Encounter (EMDA 4) was successfully held in hybrid format, on November 16th and 17th, 2023 with 196 participants on-site at CICATA Altamira, and ca. 180 participants online. The Scientific Program included 13 invited conferences from around the globe, with researchers from Malaysia, India, Azerbaijan, Romania, United Kingdom, Morocco, USA, Honduras, Mexico, Colombia giving their talks in four sessions (Semiconductors, Modelling, Materials and Engineering and Physical Sciences).Six Workshops were imparted: Elemental Analysis by X-ray Fluorescence, Production of Biobatteries from Plants, Creation of Metamaterials by 3D Printing, Introduction to AI for Materials Science, Electrochemical Methods of Analysis, ANSYS Mechanic Introductory Training. Graduate and undergraduate students benefited from these Workshops, which were also transmitted by YouTube live as well as the rest of the activities of the Conference.https://youtube.com/playlist?list=PL9d20U28c14xN3a1uvGW8-Tbrulu8-HOD&si=-X2PIPFe5gMoh32XA hybrid poster session with 46 posters showing the groundbreaking results of researchers and students was done. The submissions provided the public with a broad view of physics, semiconductors, materials, batteries, engineering applications, mathematical and computational science methods, novel concepts, ideas, and tools. The best posters were judged by a multidisciplinary jury, in two categories: Materials and Devices. The list of winners is depicted in this book.There were 43 conference paper submissions, and after a strict, double-blinded peer review process, 23 papers were selected by the Editor to be published in this volume. A total of 11 reviewers participated in this conference, who provided their professional and objective feedback to the authors to ensure the quality of the manuscripts according to the IOP Editorial’s Guidelines. The accepted papers are grouped into three general topics, i.e. Engineering Applications, Batteries/Supercapacitors and Semiconductors.The papers entitled “nS1-xSex alloy deposition by RF magnetron co-sputtering for potential photoelectrochemical applications”, “Wide-angle microwave attenuation response of a multilevel metastructure based on rGO/Fe3O4/PPy: an in-silicon study”, “Wastewater treatment from graphene oxide synthesis process”, “Physicochemical characterization of urban dust in Southern Tamaulipas using X-ray fluorescence”, “Delignification and characterization of Tule (Typha Dominguensis) for its potential use in the production of green concrete”, won the best materials poster and the paper entitled “Open Source electronic system with OLED screen monitoring of Plant Based Batteries”, “One-bit register based on 180nm CMOS technology”, “Optoelectronic system for measuring sugar content in citrus fruit” won the best devices poster after being reviewed by the session’s jury at the conference.A special acknowledgement is given to Instituto Politecnico Nacional through its Secretaria de Investigacion y Posgrado, from which financial support was possible to waive the fees for this event including the fees for paper publication, which was of capital importance because the highest participation was from graduate and undergraduate students.The kind sponsorship of SCM, SATELSA, and Soporte Analitico Especializado for the Conference banners and specific logistic needs, is kindly granted.Acknowledgements are also given to the Conference Staff, composed of CICATA Altamira and UV students who were the success factor of the Conference.The Organizers also grant the support from CICATA Altamira for the use of their facilities and the all the event logistics, as well as to the effort of the Scientific Program and Technical Committees, who did a great job preparing the event, contacting the Lecturers, confectioning the Program, reviewing the posters and the papers and making valuable suggestions for the authors to improve their work. We also would like to express our gratitude to the external reviewers, who kept the quality of the submitted papers and qualified the presented posters.Finally, on behalf of the Organizing Committees, we would like to express our sincere gratitude to all participants and speakers who contribute to make this event a great success.Looking forward to seeing you in 2025!Organizing Committee of EMDA 4th 2023List of Organizing Comittee, Conference Chair, Program Chair, Program Co-chairs, Steering Committee, Support Committee/Conference Staff and Organizations are available in this pdf.

Параметрическая таксономия учебных текстов

The article is aimed at considering the issue of the discursive text typology and developing a parametric model of the elementary school texts for the ontological domain by employing a corpus-based approach and methods of linguistic statistics. The research corpus of over 90,000 tokens comprises texts of 13 textbooks acknowledged in the 2 nd grade of Russian schools. The applied multifactor discriminant analysis enabled identification and validation of typological characteristics of the texts under study, offering the formula for referring educational texts to a subject domain on Philology, Mathematics, and Natural Sciences. The discriminant analysis results confirmed the hypothesis that each type of text corresponds to a parametric model, which includes six constants: the average number of words in a sentence, the average number of nouns, the average number of verbs and the average number of adjectives per sentence, local noun overlap, global argument overlap. The assessment of linguistic parameters was performed by an automatic Russian text analyzer RuLingva. The classification accuracy of the parametric model was identified as 80%, which ensures its high reliability and allows for the data obtained to be employed in linguistic expertise, as well as for in automated linguistic profiling of texts. The prospect of the research implies installation of the model in RuLingva and development of similar models for texts of other subject domains.