bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of repeating hydrothermal growth processes and rapid thermal annealing on CuO thin film properties
Authors: Ozga Monika , Zielony Eunika , Wierzbicka Aleksandra , Wolska Anna , Klepka Marcin , Godlewski Marek , Kowalski Bogdan J , Witkowski Bartłomiej S
Published: June 2024

This paper presents an investigation into the influence of repeating cycles of hydrothermal growth processes and rapid thermal annealing (HT+RTA) on the properties of CuO thin films. An innovative hydrothermal method ensures homogeneous single-phase films initially. However, their electrical instability and susceptibility to cracking under the influence of temperature have posed a challenge to their utilization in electronic devices. To address this limitation, the HT+RTA procedure has been developed, which effectively eliminated the issue. Comprehensive surface analysis confirmed the procedure’s ability to yield continuous films in which the content of organic compounds responsible for the formation of cracks significantly decreases. Structural analysis underscored the achieved improvements in the crystalline quality of the films. The implementation of the HT+RTA procedure significantly enhances the potential of CuO films for electronic applications. Key findings from Kelvin probe force microscopy analysis demonstrate the possibility of modulating the work function of the material. In addition, scanning capacitance microscopy measurements provided information on the changes in the local carrier concentration with each repetition. These studies indicate the increased usefulness of CuO thin films obtained from the HT+RTA procedure, which expands the possibilities of their applications in electronic devices.
Third Symposium Proceedings. New Ways of Teaching and Learning. Aemilia Hotel, Bologna, Italy. August 6-10, 2024
Authors: Morska Janina , Rogerson Alan
Published: June 2024

This volume contains the papers presented at the Third International Symposium on New Ways of Teaching & Learning held from August 6-10, 2024, at the Aemilia Hotel, Bologna, Italy. The Conference was organized by The Mathematics Education for the Future Project - an international educational project founded in 1986 and dedicated to innovation in mathematics, statistics, science and computer education world wide.
New Ways of Teaching and Learning Mathematics with Innovative Online and Offline Apps
Authors: Adenegan Kehinde Emmanuel
Published: June 2024

This paper explores the latest trends in Mathematics education, focusing on innovative online and offline applications that enhance teaching and learning experiences. The use of technology in Mathematics education with numerous tools and platforms are now designed to engage students and facilitate deeper understanding of mathematical concepts. Applications such as GeoGebra, autograph, cabri3D, plotagon, with offline apps such as Cuisenaire rods, and base ten blocks were carefully considered and explored. This paper highlights the potential of various online and offline applications in transforming Mathematics education. By leveraging these tools to engage students in interactive learning experiences, teachers can foster deeper understanding of mathematical concepts and promote lifelong learning. Keywords: Apps, Mathematics, Technology, Online, Offline, Teaching-learning.
AI to AIE: Artificial Intelligence to Access, Inclusion and Equity
Authors: Alexander Melina , Rushton Sheryl , Dawson Shirley , Vakil Shernavaz
Published: June 2024

The adoption of Generative Artificial Intelligence (AI) in education has spurred discourse in mathematics instruction and assessment (Baidoo-Anoo & Ansah, 2023). This debate has cast AI in mathematics education under various lights, with some drawing parallels to the introduction of calculators in mathematical instruction. AI can be seen as a potential detriment to instructional quality, while others perceive it as a pivotal tool for cultivating critical thinking skills (Wardat et al., 2023). This paper explores the transformative potential of AI to improve access, inclusion, and equity for students negatively impacted due to dyscalculia, resource limitations, or instructional deficits. AI-integrated mathematics instruction not only streamlines problem-solving, reducing time spent on calculations but also catalyzes improvements in critical thinking and overall student outcomes, fostering greater success.
The Math-Chemistry Notebook as a Result of an Interdisciplinary Activity in the Italian High School
Authors: Arabini Elena , Dallari Daniela
Published: June 2024

This paper describes an interdisciplinary activity developed through the whole school year in a first-year class in a Technical High School in Italy. More in detail, the Math and Chemistry curricula have been analyzed and the common topics and terms highlighted. Consequently, the sequences of the topics to be explained in the two subjects have been reorganized to match in time, and the classes presented using agreed keywords and highlighting the common terms. The students have been guided to build a three sections notebook containing Math, Chemistry, and common topics, to be used to study both subjects. As a result, a speed up in the introduction of both the curricula has been noticed together with an improvement in the students’ performances.
Unplugged Computational Thinking
Authors: Baiata Claudia , Nivens Ryan Andrew
Published: June 2024

The education world cannot overlook the fact that, in our technologically advanced society, nine out of ten professions will require strong digital competencies in the future. Nonetheless, research demonstrates the degree to which abuse of digital devices impairs school performance, sustained attention, and interpersonal skills. Although children are currently surrounded by technology, do they truly understand how to use it and avoid being used by it? Are they actually digital natives? The aim of this study is to incorporate art, geometry, proprioception, and coding into the elementary school curriculum while providing preschool and elementary school teachers with alternative perspectives and creative, entertaining ways to teach computational thinking concepts to their students - all without the need for digital devices.
Analogical Models, Intuition, and Knowledge Construction: The Case of a System of Algebraic Equations
Authors: Copperman Klila , Kouropatov Anatoli , Kidron Ivy
Published: June 2024

Constructing mathematical knowledge is a critical aspect of mathematics education. An important question is the role of intuition in this process. We propose a novel methodology for analyzing students' work in the context of a system of equations that focuses on the role of intuition in knowledge construction and includes analysis methods.
Place Value: The Nucleus of Arithmetic
Authors: Foltin Teresa
Published: June 2024

Place value allows numbers to be categorized into tidy components rather than an unending jumble of words. It was considered so important that Treviso Arithmetic, written in 1478, referred to place value as one of the basic arithmetic operations. Primary children speaking Eastern Asian languages understand place value years earlier than English-speaking children because the names of the numbers make place value transparent: 26 is two-ten six and 49 is four-ten nine. Thinking of 14 as 14 ones rather than one 10 and four ones interferes with carrying when adding multi-digit numbers. In order to appreciate the pattern that 10 ones equal 10, 10 tens equal 100, 10 hundreds equal 1000, and so forth, students must be allowed to work with numbers into the thousands. Place value is indeed the foundation of arithmetic.
Computational Thinking in Students’ Research Projects
Authors: Gordon Christopher , Wickliff Alisa , Wickliff Gregory , Pugalee David
Published: June 2024

Computational thinking is increasingly important in the secondary curriculum beyond the computer science classroom, especially in technology heavy STEM fields. We applied the Computational Thinking in Mathematics and Science Taxonomy (Weintrop et al., 2016) to explore how secondary students demonstrated computational thinking in research projects from a month-long STEM enrichment summer program. The preliminary data show that the papers and posters of four students, one from each area of the summer curricula, demonstrate all four of the practices: Data Practices, Modeling and Simulation Practices, Computational Problem Solving Practices, and Systems Thinking Practices. These results indicate that computational thinking provides a useful framework for planning and assessing secondary students’ STEM independent research projects. Key words: computational thinking, research.
Chaos Theory and Fractals in Finance
Authors: Gulati Raisa
Published: June 2024

This research paper delves into the application of chaos theory in finance, specifically focusing on the Fractal Market Hypothesis (FMH), within the evolving landscape of finance. It delves into the interconnectedness between seemingly unrelated events, referred as the butterfly effect, and how such interplays have significant repercussions on financial markets. Additionally, the research encompasses a case study of the 2008 financial crisis and the emergence of cryptocurrencies and their contemporary relevance within the framework of chaos theory and fractals. The study also includes the usage of fractal indicator along with a comparative analysis of the Efficient Market Hypothesis (EMH) and Fractal Market Hypothesis (FMH), shedding light on their respective strengths and limitations.
Using MCQs for Formative and Summative Mathematics Assessment
Authors: Hayes Clinton , Adams Nadine , Dekkers Antony
Published: June 2024

The use of Multiple-Choice Questionnaires (MCQs) in universities has increased due to larger student enrolments, limited resources and the increasing use of technology, as well as their ability to save marking time for staff. Electronically marked MCQs for large cohorts provide effective marking and an efficient assessment method for student knowledge. When writing mathematical-based MCQs, careful consideration must be taken to include answers containing the most common student errors, allowing feedback to pinpoint errors and correct misconceptions. Although they are relatively easy to set up, writing well-written MCQs is a skill many academics lack. MCQs are time-consuming to construct correctly, and staff require training. A review of techniques to construct MCQs is given, with a case study for formative and summative assessment.
Exploring Secondary Mathematics Teachers’ Reasons for Attending Voluntary Professional Learning
Authors: Hine Gregory
Published: June 2024

A problematic issue in Australian schools is the supply of secondary school mathematics teachers (SSMTs). To address this issue, one approach conducted at scale provides professional learning (PL) courses for teachers of Years 7-10 mathematics. Research was conducted with PL participants to identify their reasons for undertaking courses voluntarily, through the exercise of pre- and post-course surveys and a post-course interview. Reported in this paper are predominantly the findings from qualitative survey items. For the most part, participants expressed a need to develop their knowledge in mathematics content and pedagogy, and to feel prepared, confident and qualified. While post-course claims were generally accompanied by assertions of increased confidence in these knowledge domains, they were also underpinned by a need to practice and consolidate certain topics before teaching the course.
A Novel Approach to Teaching and Assessing Students’ Critical Thinking in University Mathematics
Authors: Klymchuk Sergiy
Published: June 2024

This paper extends my previous study presented at the 16th conference of The Mathematics Education for the Future Project held in Cambridge in 2022 to the university level. It investigates the attitudes of the university mathematics lecturers towards the use of deliberately misleading mathematics questions in teaching and assessment as a pedagogical strategy with their students. The intention of using such questions is to enhance students’ critical thinking. Critical thinking is understood here as “examining, questioning, evaluating, and challenging taken-for-granted assumptions about issues and practices” as defined by the New Zealand Ministry of Education. The study is based on a survey of university lecturers who have been introduced to the suggested pedagogical strategy. Their attitudes are analysed in the paper and compared with the attitudes of secondary school mathematics teachers. Key words: critical thinking, assessment, university mathematics.
Promoting Discourse and Argumentation in Mathematics Classroom Interaction as a Challenge for Pre-Service Teachers – Vignette-Based Learning Opportunities as a Possible Solution Pathway
Authors: Kuntze Sebastian , Krummenauer Jens
Published: June 2024

When it comes to noticing and analysing potential springboards into rich discourse and argumentation in interaction processes in the mathematics classroom, pre-service teachers can be expected to encounter challenges. However, such noticing and analysing is a key for teachers when they have to support a culture of mathematics-related discourse and argumentation in their classrooms. Vignette-based learning opportunities can be a solution in this context: pre-service teachers can reflect on representations of classroom situations, so that their progress in analysing the discourse and argumentation potential of teacher reactions can be monitored and corresponding learning opportunities can be provided. We present specific developments of classroom cartoon vignettes. The vignettes are implemented using the digital DIVER tool, which has been developed in the project coReflect@maths (www.coreflect.eu).
Conceptualization and Challenges from a Global Undergraduate Research Study
Authors: Leitherer Barbara H. , Dwarka Pankaj R. , Xhane Entela K. , Rami Jignasa R.
Published: June 2024

Students in the first two years of college are normally not involved in peer review research, but voices are getting louder that they should be to address the alarming shortage in the global STEM workforce. Exposing students to rich undergraduate research experience can potentially empower them to pursue a STEM career. This paper tries to reflect on the journey of four faculty advisors who guided community college students in the US through the process of research. Special focus will be on the challenges students encountered with conceptualization, the faculty interventions to overcome those obstacles, conceptual teaching, and highlighting how abstract concepts apply to the students’ research. Additionally, the findings include examples of scientists’ feedback on student papers, and insights about students’ cultural understanding from a global perspective.
Effect of Change of Shape on Time Period of a Pendulum
Authors: Mahana Jahnavi
Published: June 2024

The research paper delves into the realm of simple harmonic motion (SHM) through the lens of applied mathematics, offering a comprehensive exploration of its underlying principles, mathematical representations, and real-world applications. The paper begins by establishing a foundation on the time-period taken by the pendulum, with its varying shapes. This includes a detailed analysis of the equations governing displacement, velocity, and acceleration, fostering an understanding of the interplay between differentiating structure and constant physical behaviour of the pendulum. By employing applied mathematics as a tool, the paper fundamentally offers a comprehensive perspective on SHM’s intricate mathematical representations and its wide ranging fields of research.
Custom Glenoid Implant in Total Shoulder Arthroplasty: Case Report of Two Patients
Authors: Murray Jerome C. , Braman Jonathan , Harrison Alicia , Rao Allison
Published: June 2024

Glenohumeral arthritis is typically treated with shoulder arthroplasty, however in younger patients with complex glenoid pathology this can become more challenging. Considerations surrounding surgical management strive to provide a functional, stable shoulder, while maintaining options for revision in the future. Custom glenoid implants have emerged as a promising option for patients in this challenging population, however there is a lack of literature surrounding their use for addressing glenoid bone loss for anatomic total shoulder arthroplasty. This case report highlights the course of treatment for 2 patients with severe glenoid bone deficiency and debilitating shoulder pain. A custom glenoid implant was used after careful consideration and review of available options. The use of a convertible custom glenoid implant for these patients allowed for improved function and decreased pain, while preserving options for treatment in the future.
Pelatihan Pengembangan Media Pembelajaran Bahasa Inggris Berbasis Teknologi dan Nilai Keislaman Bagi Guru
Authors: Tusino Tusino , Nurhadi Rofiq , Ermayani Tri
Published: June 2024

Minimnya ketrampilan guru dalam mengembangkan materi ajar berbasis teknologi informasi dan nilai keislaman dialami oleh para guru di Malaysia. Pengabdian kepada masyarakat dilakukan oleh tiga orang dosen di sekolah Maahad As-Sultan Ahmad Shah Addini (SAS) Pahang, Malaysia. Kegiatan ini merupakan pelatihan penerapan media pembelajaran berbasis teknologi dan nilai keislaman di sekolah berbasis pondok pesantren di Jengka, negara bagian Pahang, Malaysia. Metode pelaksanaan pengabdian kepada masyarakat menggunakan model pelatihan dan workshop secara face-to-face bagi guru tingkatan 1-5 di sekolah Maahad SAS Pahang Malaysia. Peserta pelatihan adalah 20 orang guru dari semua mata pelajaran. Analisis ketercapaian program dilakukan dengan model wawancara terstruktur terhadap peserta pelatihan. Hasil yang didapatkan dari kegiatan pengabdian kepada masyarakat ini, terjadi peningkatan ketrampilan dalam penerapan media pembelajaran berbasis teknologi informasi di dalam kelas. Selain itu, guru dapat menginternalisasi nilai-nilai keislaman di dalam struktur kurikulum mata pelajaran.
Sosialisasi dan Edukasi Tentang Perizinan dan Pendirian Badan Hukum Bagi Para Pengusaha dan Pengemudi Angkutan Umum
Authors: Syaiful Syaiful , Susanti Neni , Satyadharma Maudhy , Nuhun Ridwan Syah , Soeparyanto Try Sugiyarto , Arsyad La Ode Muhamad Nurrakhmad , Rachman Rano Marlany , Hado Hado
Published: June 2024

Transportasi merupakan kebutuhan yang vital yang mampu menunjang pergerakan dan mobilitas orang dan juga berdampak pada pertumbuhan ekonomi suatu daerah. Manusia memerlukan alat transportasi untuk mendukung segala aktifitasnya. Alat transportasi berdasarkan kegunaannya dibedakan menjadi angkutan pribadi dan angkutan umum. Pentingnya keberadaan angkutan baik angkutan penumpang umum dan angkutan barang bagi masyarakat tentu membutuhkan penerapan aturan yang harus diikuti oleh segenap pihak. Namun tentu saja penyelenggaraan dan penerapan aturan itu tidak dapat terlaksana dengan baik tanpa adanya pengendalian, pengawasan serta penegakan hukum yang harus dilakukan oleh instansi terkait.  Salah satu rangkaian dari pengawasan yang dilakukan oleh pemerintah adalah penerbitan izin penyelenggaraan angkutan umum. Permasalahan yang terjadi hari ini, perizinan transportasi hari ini sudah mengalami pergeseran dimana perizinan usaha sektor transportasi dilakukan secara online dan berbasiskan risiko. Fakta yang ditemukan hari ini, ternyata banyak sopir angkutan umum yang sama sekali tidak memahami dengan jelas mengenai fenomena pergeseran perizinan berusaha di sektor transportasi termasuk di wilayah Kabupaten Bombana. Hasil sosialisasi yang dilakukan memperlihatkan adanya peningkatan pemahaman dari para sopir angkutan umum di kabupaten Bombana terkait apa itu perizinan usaha Angkutan Umum, persyaratan pengurusan yang ternyata tidak serumit dalam bayangan mereka dan perlindungan apa yang mereka dapatkan dengan adanya izin yang mereka miliki dalam penyelenggaraan transportasi hari ini serta adanya kesadaran untuk mengurus perizinan sesuai regilasi yang berlaku.
Gender Representation in True Story Television Film
Authors: Handayanti Asih , Septadinusastra Vina Alvinia , Rahayu Asri Sri , Haryadi Mujianto  , Neni Yulianita
Published: June 2024

The research was conducted on two Real Story FTV titles entitled "My Wife Is Like a Loaner Sucking My Money" and "My Feelings Are Being Played by My Husband". The research objective was to find out how gender is represented in Real Story FTV. This study uses a qualitative approach, with the method of critical discourse analysis model of Norman Fairclough. The analysis was divided into three stages, but the ones used in this study only reached the Text analysis stage (Micro level). The results of the study concluded that gender representation in the two FTV titles Real Stories is represented unequally, and causes gender bias. Many women are labeled as materialistic, money-crazed, usurpers, and men are labeled as someone who is unfaithful. The conclusion is that the media, through the FTV TV Show Real Stories, still represents gender unfairly, causing gender bias among the public to be difficult to eliminate.
A method for determining the position of the center of gravity of a bulky cargo for safe reloading on a ship
Authors: Nikitin Yevgeny V. , Simenenko Sofia A.
Published: June 2024

Based on the analysis of the equilibrium equations of a two-link suspension system for bulky cargo, two methods for determining the position of the center of gravity of this cargo are proposed. The essence of the methods consists in double suspension of this system and measuring the angles of its deviation in the suspended equilibrium position. In this case, the difference in the angles of deviation of the system between suspensions is provided either by changing the height of the primary suspension (the length of the primary slings), or by changing the ratio of the masses of the traverse and the load.  A comparative analysis of the accuracy and practical feasibility of both methods is carried out. It is shown that when carrying out cargo operations in a port or on a ship, a method in which the difference in the angles of deviation of the system between suspensions is carried out by changing the length of the primary slings (the height of the primary suspension) is practically feasible and more accurate.
The work emphasizes that an important condition for ensuring the stability of the system when hanging and preventing overturning of the load is that the primary slings (connecting the hook and the traverse) must be of such length that the suspended load can virtually be inscribed inside the pyramid (safety pyramid) formed by the traverse and these slings. It is also shown that the length of the secondary slings (connecting the traverse and the load) does not matter, but they must be of equal length and parallel to each other, which will ensure their vertical position after hanging the system. The heavier the traverse (in comparison with the weight of the suspended cargo), the higher the safety pyramid, and therefore the more stable the cargo suspension system as a whole becomes. On the other hand, the longer the primary slings (the higher the safety pyramid), the smaller the angles of deviation of the traverse (and the system as a whole) from the initial position when suspended.  To demonstrate the possibilities of the proposed new method for determining the position of the cargo center, a numerical example of its implementation is given.
Mathematical model of in-line manufacturing of sections in a flexible shipyard production system
Authors: Shchegoleva Olga A. , Burmistrova Anastasia E. , Burmistrov Evenly G.
Published: June 2024

The assembly and welding production of the shipyard is a complex production system. Studying the functioning of its individual elements, the interrelationships between them, and responses to the disturbing effects of external and internal factors in real conditions is difficult, expensive, and time-consuming. For this purpose, it is appropriate to use all possible modeling methods, especially when it comes to modeling systems with streaming processes. The application of this practice will allow, without significant expenditure of various kinds of resources, in a short time to find the optimal planning solution for the composition and performance of equipment, the placement of personnel, etc. Most modeling methods are based on a pre-developed mathematical model. The purpose of its development in the context of this article is reduced to the search for rational solutions related to increasing the flexibility of existing production processes and their management.
Research of boiling flow parameters in vertical evaporators of marine refrigeration machines
Authors: Bukin Vladimir G. , Andreev Alexander I. , Minofyev Roman R.
Published: June 2024

In this work, the subject of research is hydrodynamics, and in particular, the hydraulic resistance of a boiling two-phase flow moving in vertical and inclined pipes of evaporators of ship refrigeration units. Such movement is typical for various types of industrial heat exchange equipment, including the development of promising types of evaporators, for example, vertical devices for ships in which in-tube boiling of liquid refrigerant occurs. Experiments were carried out to study hydraulic resistance in vertical pipes with different channel diameters and lengths. The main dependencies of the various components of hydraulic resistance that arise during the movement of a boiling two-phase flow are presented. Based on the data obtained, the prospects of transitioning ship evaporators of refrigeration units to a vertical arrangement of heat exchange tubes are shown. When applied to ship refrigeration machines, we can say that the transition to vertical units has its advantages, primarily in reducing pressure losses. The resulting set of data allows us to recommend the design of vertical evaporators for auxiliary ship installations.
Economic and mathematical model of selection of optimal delivery schemes involving water transport and the use of regional transport infrastructure facilities
Authors: Kartashova Olga I.
Published: June 2024

The article presents the results of the formation of an economic and mathematical model for optimizing the distribution of cargo flows in the region and the selection of optimal schemes for the delivery of goods through regional transport infrastructure facilities. The approaches adopted in the educational and scientific literature to solve the indicated problem, as well as the proposals of scientists to improve them, are considered. It was concluded that it is necessary to develop its own model that meets the modern conditions for the functioning of water transport and port terminals in the system of regional, interregional and international transportation. An economic and mathematical model has been formulated, taking into account the possibility of organizing the transportation of goods both directly from regional senders to recipients and through terminal complexes with backload. Testing of the model on the control example showed that with a certain number of points of the served transport network, the size of the region and the volume of cargo flows, transportation can be effectively mastered by port terminals, which are most suitable for working in these conditions.
Assessment of the possible impact on the safety of civil navigation of existing concepts of «navigation pressure»
Authors: Kirillov Nikolai О.
Published: June 2024

The features of the global satellite GNSS GPS, as originally a system for military purposes, are considered. The experience of its combat use in recent military conflicts, including during a special military operation, is summarized. Numerous failures in the reception of GPS signals by civilian users, including air carriers and navigators, have been identified when operating GPS in a military environment. The main provisions of the concept of navigation warfare adopted in the United States, one of the elements of which is GNSS GPS and the main goals that it pursues, are considered. An assessment was made of the possible impact of the provisions of the navigational war on the safety of civil navigation and the main directions of work to minimize this impact were outlined. The increasing role and place of nautical astronomy is indicated, as a completely autonomous means of navigation, suitable for use in any area of the World Ocean.
Investigation of the influence of bridge support configurations on local bottom erosion when changing the flow direction on the approach to the bridge crossing structures
Authors: Kuprina Ekaterina M.
Published: June 2024

The analysis of the impact of bridge crossings is based on calculated studies of local erosion on the Belaya River section in the alignment of Vorovsky Street in Ufa in 2021, where a new bridge crossing is currently planned to be commissioned. Due to the complexity of the process of interaction of the turbulent flow with the geometric design of the supports. The main criteria of the analysis are the shape and width of the bridge supports, as well as the direction of flow relative to the bridge support. The results showed possible changes in the depth of local erosion at the approaches to the bridge. In order to simplify the calculation and to find the greatest criteria affecting the effective indicator of local erosion, a factor analysis of the obtained values was performed in the work.
Social network analysis of foreign research in the field of automation of cargo container transportation
Authors: Petrova Ekaterina E. , Gannesen Vitalii V. , Malikova Tatiana E.
Published: June 2024

The relevance of the topic is caused by the following. Improving automation and digitalization of technological processes of transshipment complexes is one of the priorities for development of maritime and river transport in the Russian Federation in the coming years. The importance of scientific research aimed at finding solutions to this problem, undoubtedly, increases already accumulated knowledge and the rate of emergence of new ones in this area. As a result, there is a need to update and systematize newly obtained theoretical and practical developments in review studies, which undoubtedly form the foundation of all academic research activities, as they are aimed at identifying current problems and links of future scientific developments with existing ones. The work analyzes the scientific area research in the field of automation of technological processes of container terminals regarding the dominant thematic areas of foreign scientific schools over the past ten years. The source of information flow for the analysis was secondary open scientific data posted in the GoogleScholar system. The objectives of the study included searching for publications corresponding to the stated topic, clustering the authors of these articles based on the principle of co-authorship, identifying scientists who contributed most to the new scientific developments, determining the scientific interests of researchers by analyzing the texts of their scientific works. The method of edge clustering, as well as structural and positional analyses were used to solve the tasks. As a result, a network graph was generated for the authorship of scientific works, a cross-citation graph of scientific publications, as well as a graph for comparing the research results of scientists with one of the thematic directions of the subject area of research. Graph construction and analysis were performed using Gephi software.
Pecha Kucha: The Use of Visual Technology for Storytelling to Improve Students Presentation Skills in Marketing Course
Authors: Mohd. Noor Abdul Hamid  , Norhaiza Khairudin  , Azrina Abdul Razak  , Qusi Hassan Aqeel Alshorman
Published: June 2024

Delivering effective presentations requires mastery of essential presentation skills and utilization of presentation tools. This study investigated the effects of using the visual technology for storytelling method known as Pecha Kucha as opposed to the traditional modes of using PowerPoint with heavy use of bullet points and text on marketing students’ competency in giving presentations. The study adopts an experimental research design. The data was collected from students’ self-evaluation and lecturers’ evaluations of the presentations. It also uses qualitative data from the students’ and lecturers’ reflections. Results from students’ self-evaluation revealed that modes of presentation did not contribute significantly on students’ overall performance. However, the study indicated that those who adopted the Pecha Kucha method did show significant improvements in their ability to use physical behaviour and gestures. On the contrary, results from the lecturers’ evaluation showed that the Pecha Kucha method did have significant effects in improving students’ overall performance as well as in each of the components evaluated. The findings led to the understanding that for lecturers, the Pecha Kucha is an enhanced mode of presentation. The study also highlighted the implications on teaching and learning and the potential of using alternative presentation formats.
Deep Fusion of Intrinsic Vibration Information and Grassmann Manifold-based Similarity for Fault Identification of Reciprocating Compressor
Authors: Zhang Ying , Ji Jinchen , Chen Xiaowang
Published: June 2024

This paper introduces a new method based on deep belief networks (DBN) to integrate intrinsic vibration information and assess the similarity of subspaces established on the Grassmann manifold for intelligent fault diagnosis of a reciprocating compressor (RC). Initially, raw vibration signals undergo empirical mode decomposition (EMD) to break them down into multiple intrinsic mode functions (IMFs). This operation can reveal inherent vibration patterns of fault and other components hidden in the original signals. Subsequently, features are refined from all the IMFs and concatenated into a high-dimensional representative vector, offering localized and comprehensive insights into RC operation. Through DBN, the fault-sensitive information are further refined from the features to enhance their performance in fault identification. Finally, similarities among subspaces on the Grassmann manifold are computed to match fault types. The efficacy of the method is validated using field data. Comparative analysis with traditional approaches for feature dimension reduction, feature extraction, and Euclidean distance-based fault identification underscores the effectiveness and superiority of the proposed method in RC fault diagnosis.
 
Conflict of Interest Statement
The authors declare no conflicts of interest.
Difficulties in the treatment of acute sepsis
Authors: Kopcha V. S.
Published: June 2024

SUMMARY. The problem of acute sepsis as a polyetiological acyclic disease with peculiar clinical symptoms and diagnostic difficulties, which requires special treatment, is considered. Acute sepsis is the main and most common clinical form of this disease. The predictors of acute sepsis and the variety of clinical manifestations of its two classical stages – septicemia and septicopyemia – are characterized in detail.
A typical case of acute sepsis, which was diagnosed only later, is given. In this regard, etiotropic therapy was delayed. Therefore, despite powerful etiotropic therapy, the disease was not limited to acute sepsis, but continued in the form of infectious (septic) endocarditis.
The septic nature of infectious endocarditis is due to the presence and persistence of a septic focus in the endocardium, as well as the course of the disease in the form of continuous growth of local inflammatory and destructive changes in primary septic foci and general infectious-metastatic, thromboembolic and immune complex manifestations, which in the absence of special treatment lead to an inevitable fatal outcome, that is, the development of a disease such as sepsis acyclicity.
The diagnosis of infective endocarditis is based on the detection of initially reasonably suspicious clinical and then evident paraclinical signs of the disease. Classical clinical and morphological signs of infectious endocarditis, as well as general principles of therapy of such patients, are given.
Prescribing beta-blockers to patients after acute myocardial infarction
Authors: Lazarev P. O.
Published: June 2024

In the treatment of patients with acute coronary syndrome in the pre-reperfusion era, one of the first-line drugs was beta-blockers. Now the management strategy of such patients has changed significantly. The results of these studies confirm the important role of beta-blockers in the therapy of patients who have undergone ACS in the era of reperfusion therapy. Beta-blocker therapy may be beneficial because of a potential reduction in the risk of all-cause death. The choice of vasodilatory drugs can provide benefits and additionally prevent the occurrence of complications.
PModern ideas about the treatment of atherosclerosis
Authors: Tseluyko V. Y.
Published: June 2024

Atherosclerosis is characterized by accumulation of lipids in the intima of arteries, inflammatory and proliferative processes that lead to deterioration of blood flow and/or atherothrombosis. Today, it is considered a systemic disease that requires complex treatment, which depends on the risk group to which the patient belongs. The article highlights the importance of controlling the level of LP (a), which is a poorly studied factor, and the use of the drug inclisran for hypolipidemic therapy
Impact of Antidiabetic Drugs on Clinical Outcomes of COVID-19: A Nationwide Population-Based Study
Authors: Jang Han Na , Moon Sun Joon , Jung Jin Hyung , Han Kyung-Do , Rhee Eun-Jung , Lee Won-Young
Published: June 2024

Background: Inconsistent results have been reported regarding the association between the use of antidiabetic drugs and the clinical outcomes of coronavirus disease 2019 (COVID-19). This study aimed to investigate the effect of antidiabetic drugs on COVID-19 outcomes in patients with diabetes using data from the National Health Insurance Service (NHIS) in South Korea.Methods: We analyzed the NHIS data of patients aged ≥20 years who tested positive for COVID-19 and were taking antidiabetic drugs between December 2019 and June 2020. Multiple logistic regression analysis was performed to analyze the clinical outcomes of COVID-19 based on the use of antidiabetic drugs.Results: A total of 556 patients taking antidiabetic drugs tested positive for COVID-19, including 271 male (48.7%), most of whom were in their sixties. Of all patients, 433 (77.9%) were hospitalized, 119 (21.4%) received oxygen treatment, 87 (15.6%) were admitted to the intensive care unit, 31 (5.6%) required mechanical ventilation, and 61 (11.0%) died. Metformin was significantly associated with the lower risks of mechanical ventilation (odds ratio [OR], 0.281; 95% confidence interval [CI], 0.109 to 0.720; P=0.008), and death (OR, 0.395; 95% CI, 0.182 to 0.854; P=0.018). Dipeptidylpeptidase-4 inhibitor (DPP-4i) were significantly associated with the lower risks of oxygen treatment (OR, 0.565; 95% CI, 0.356 to 0.895; P=0.015) and death (OR, 0.454; 95% CI, 0.217 to 0.949; P=0.036). Sulfonylurea was significantly associated with the higher risk of mechanical ventilation (OR, 2.579; 95% CI, 1.004 to 6.626; P=0.049).Conclusion: In patients with diabetes and COVID-19, metformin exhibited reduced risks of mechanical ventilation and death, DPP- 4i was linked with lower risks of oxygen treatment and death, while sulfonylurea was related to the increased risk of mechanical ventilation.
Agravo de instrumento sob a perspectiva da jurisprudência do Superior Tribunal de Justiça
Authors: Lima Marcelo Rocha de
Published: June 2024

Introdução: trata-se de artigo jurídico no âmbito do direito processual civil, consistente na análise da jurisprudência do Superior Tribunal de Justiça sobre o cabimento de agravo de instrumento, se adota teoria restritiva, taxativa ou analógica/extensiva para interposição do referido recurso. Objetivo: a sistematização crítica da jurisprudência do Superior Tribunal de Justiça, a fim de fomentar as várias discussões acadêmicas acerca da usabilidade do recurso de agravo de instrumento. Método: utilizou-se, para tanto, a pesquisa bibliográfica, com consultas a livros, a artigos jurídicos, a legislação e a decisões judiciais pertinentes. Resultados: o resultado alcançado pela pesquisa foi de que houve uma mitigação da regra da taxatividade assim prevista pelo legislador infraconstitucional, por parte da jurisprudência do Superior Tribunal de Justiça, tendo assim criada a teoria da taxatividade mitigada. Conclusões: note-se que, para interposição do recurso de agravo de instrumento, além das hipóteses legais de cabimento, também cabe o recurso, em razão urgência decorrente da inutilidade do julgamento da questão no recurso de apelação, nos termos da jurisprudência do Superior Tribunal de Justiça.
Hematolojik belirteçler preoperatif dönemde endometriyal intraepitelyal neoplazi ve grade 1 endometrioid endometriyal karsinom arasındaki farkı predikte etmede yardımcı mıdır?
Authors: Sargın Mete , Şahin Mustafa , Yalçın Hakan Raşit
Published: June 2024

Amaç: Sistemik inflamatuar belirteçlerin endometrial intraepitelyel neoplazili ve grade 1 endometrioid tip endometrium kanserli hastalardaki farkı predikte etmedeki rolünü değerlenmektir.
Gereç ve Yöntem: Eylül 2019- Temmuz 2023 tarihleri arasında tersiyer bir merkezde preoperatif endometrial biyopsi sonucu EİN olan 75 hasta ve grade 1 endometrioid tip endometrial kanser olan 223 hasta olmak üzere toplam 298 hastanın verileri hastane veri tabanından retrospektif olarak incelendi. İki grup arasındaki klinik ve biyokimyasal sonuçlar karşılaştırıldı.
Bulgular: Endometrial intraepitelyal neoplazili ve grade 1 endometrioid tip endometrium kanserli hasta grupları arasında yaş ve inflamatuar prognostik indeks değerleri arasındaki fark istatistiksel olarak anlamlıydı(sırasıyla p
Mimar Sinan Türbesi Üzerine Bir Değerlendirme
Authors: Öter Nacide
Published: June 2024

Osmanlı Klasik Dönem sanatı ve mimarisi dediğimiz zaman ilk akla gelen isim Mimar Sinan’dır. Bu dönemin mimarisini ve sanatını anlamamız için onun yapmış olduğu eserleri mimarlık, mühendislik ve sanatsal açıdan o dönemin şartlarıyla beraber kavramamız gerekir. Her eserine ayrı bir yenilik kazandıran Sinan, kırk sekiz yaşında mimar başı olmuştur. Kendi hayatını anlatan Tezkiretü’l Bünyan, Tezkiretü’l Ebniye ve Tuhfetu’l Mimarin isimli eserlerde yapmış olduğu eserlerin listesi verilmiştir. Fakat birinci elden diyebileceğimiz bu eserlerde dahi kendisine mal edilen eserler birbiriyle bağdaşmazlar. Mimar Sinan Türbeleri birçok araştırmacının konusunu oluştursa da kendisine mal edilen türbe sayısı da belirsizdir. İlk elden dediğimiz bu kaynaklarda onun eseri olarak geçen türbeler de ne yazık ki birbiriyle bağdaşmaz. Bu noktada Sinan’ın kendi türbesinin de mimarı olup olmadığı belirsizdir. Türbesini kendisinin inşa ettiği bilinmese de yerini kendisinin belirlediği bilinmektedir. Türbe, kalfalık eseri Süleymaniye camisinin kuzeyinde yer alır. Birçok padişaha, sultana, şehzadeye, devlet erkânına oldukça anıtsal nitelikte türbe inşa eden Sinan’ın türbesi, mütevazı yapısı ile dikkat çeker. Dikdörtgen planlı türbe baldaken şeklinde bir tasarıma sahiptir. Dört ayak tarafından taşınan oldukça büyük türbeler inşa eden Sinan’ın kendi türbesi böyle değildir. Camilerde benimsediği modüler sistemi burada da uygulamıştır.
A flipped classroom approach for dental undergraduate pre-clinical skills training in fixed prosthodontics
Authors: Marsden Jonathan E , Newey Claire
Published: June 2024

Proficiency in practical areas of pre-clinical dentistry must be demonstrated by students in a simulated environment before commencing treatments on patients. Time within simulation teaching laboratories is a finite resource, and this time pressure can lead to behaviours that are detrimental to fine motor skill development. The objective of this case study was to apply a flipped classroom approach for dental undergraduates during pre-clinical skills training to increase time for simulation. A flipped classroom method was implemented during the fixed prosthodontic (dental crown or ‘caps’) component, with lectures and instructional videos delivered in advance of practical sessions.

A student evaluation questionnaire was completed by 64 of the 71 participating students (90.14%) and this was compared to the previous cohort who received the traditional didactic face-to-face demonstrations. Statistically significant improvements were identified by students in several areas. Simulation is a widespread teaching modality in healthcare education; adopting a flipped classroom approach can help educators deliver this training in a manner that enhances student development and the current case study is one such positive example in the field of undergraduate dental education.

This article was published open access under a CC BY licence:
https://creativecommons.org/licences/by/4.0
.
Statistical Properties of Whistler-mode Waves in the Dayside Terrestrial Space: MMS Observations
Authors: Zhang H. , Zhong Z. H. , Lu J. Y. , Wang M. , Yi Y. Y. , Tang R. X. , Deng X. H.
Published: June 2024

Whistler-mode waves have been extensively observed and investigated in terrestrial space. In this study, we present the dynamic response of whistler-mode waves to different solar wind conditions in the dayside terrestrial space based on Magnetospheric Multiscale (MMS) data. Statistical results show that the occurrence rate, amplitudes, and corresponding electron temperature anisotropy of whistler-mode waves increase with P

sw
in the dayside terrestrial space, which is attributed to the compression of magnetic fields in these magnetosheath and outer magnetosphere. Furthermore, whistler-mode waves under the southward interplanetary magnetic fields (IMFs) show a higher occurrence rate than that under the northward IMFs, mostly corresponding to T

e⊥/T

e∥ > 1, and have a higher occurrence rate during quasi-radial IMFs. These results present that whistler-mode waves in these magnetosheath and outer magnetosphere are also modulated by the solar wind as clearly as the inner magnetosphere. This work advanced our understanding in the solar–terrestrial interaction.
Nonthermal Acceleration of Electrons, Positrons, and Protons at a Nonrelativistic Quasi-parallel Collisionless Shock
Authors: Yu Huan , Xia Qi , Fang Jun
Published: June 2024

Energetic positrons have been observed in the interstellar medium, and high-energy positrons with relativistic energies up to approximately 1 TeV have been detected in Galactic cosmic rays. We conducted a study on the acceleration of particles, specifically positrons, in a nonrelativistic quasi-parallel collisionless shock induced by a plasma consisting of protons, electrons, and positrons. The positron-to-proton number density ratio in the plasma is 0.1. We focused on a representative shock with a sonic Mach number of 17.1 and an Alfvénic Mach number of 16.8 in the rest frame of the shock. To investigate the acceleration mechanisms of particles including positrons in the shock, we utilized 1D particle-in-cell simulations. It was found that all three species of particles in the shock can be accelerated and exhibit power-law spectra. At the shock front, a significant portion of incoming upstream particles are reflected and undergo significant energy increases, and these reflected particles can be efficiently injected into the process of diffusive shock acceleration (DSA). Moveover, the reflected positrons can be further accelerated by an electric field parallel to the magnetic field when they move along the magnetic field upstream of the shock. As a result, positrons can be preferentially accelerated to be injected in the DSA process compared to electrons.