bluuebunny/crossref_metadata_2025 huggingface dataset:
PROCESSES OF BONE TISSUE REGENERATION IN FRACTURES OF THE LOWER JAW
Authors: Soltanov Sahil , Gabidullina Guzel , Ksembaev Said , Ivanov Oleg , Torgashova Ol'ga
Published: May 2024

Item. The review of literature devoted to the actual problem of maxillofacial surgery — processes of bone tissue regeneration in mandibular fractures is presented.
The purpose of the study — to study and analyze the materials of publications on the processes of bone tissue regeneration in mandibular fractures.
Methodology. The publications of domestic and foreign authors devoted to the processes of bone tissue regeneration in mandibular fractures were studied. The publications were analyzed using scientific search library databases: PubMed Central, Google, Cyberleninka, eLibrary. Materials were selected by keywords. Full-text articles were included in the search.
Results. In domestic and foreign literature, the processes of restoration of bone structures of the maxillofacial region as an organism's response to damage have been studied and described in detail. It has been established that two processes are simultaneously launched: resorption of damaged osteocytes and formation of osteoid tissue, one of which may be predominant at the moment.
Conclusions. The article presents modern data on the key moments of bone tissue regeneration in the region of the mandible. All stages of the reparative process in bone tissue are described at the cellular level, and information about the main mechanisms, pathways and cell types involved in bone tissue regeneration is presented in detail, taking into account the stage of osteogenesis.
Knowledge of the regularities of biological processes in the bone tissue regeneration zone allows scientific search and development of effective methods of treatment of mandibular fractures.
SYSTEMATIC REVIEW OF METHODS FOR RESTORING PROXIMAL CAVITIES OF CHEWING TEETH: CURRENT STATUS AND PROMISING TECHNOLOGICAL ADVANCES
Authors: Shefov Vladimir , OREKHOVA Lyudmila , Prokhorova Olga , Shefova Anastasia , Savina Maria , Gabidullin Rainur
Published: May 2024

Relevance. To maintain dental health and maintain the normal structure of the dental system, a deep understanding of methods for restoring lost dental tissue is necessary. When restoring class II carious lesions, open and closed sandwich techniques were used, as well as various methods of manipulating composite materials. Systematization of existing research will allow the dentist to better navigate the available techniques and provide better treatment to his patients.
Aim: To conduct a systematic review of the effectiveness of the method for restoring proximal contacts of posterior teeth.
Materials and methods. As part of the study, a systematic analysis of the technique for restoring contact points of teeth was carried out, in compliance with established criteria. Initial data were obtained by searching the Google Scholar, ScienceDirect, PubMed, ResearchGate, CyberLeninka and eLIBRARY.RU databases using the following key terms: «recovery methods», «contact point», «open sandwich», «closed sandwich», «filling technique», «point of contact», «closed centripetal», «open centripetal».
Results. To conduct a systematic review, 7 articles were reviewed on the seal quality of restorations made using the open sandwich, closed sandwich, and total bonding methods. In 85% of cases, the open sandwich method was indicated by the authors as the most appropriate for creating sealed class 2 restorations.
Conclusions. The best tightness of restorations in in vitro studies in 85% of cases was achieved using the technique of filling an open sandwich. The tightness of the restoration not only affects the choice of material, but also prevents its application. Further comparative in vivo studies on the survival of class 2 restorations made using the open sandwich or total bonding method are needed.
ANALYSIS OF RISK FACTORS FOR XEROSTOMIA AND HEALTHY LIFESTYLE OF STUDENTS OF THE FACULTY OF DENTISTRY OF THE URAL STATE MEDICAL UNIVERSITY
Authors: Elovicova Tat'yana , Sablina Svetlana , Ermishina Elena , Mandra Yuliya , Makerova Natalia , Gegalina N. , Shimova Margarita , Litvinenko Daria
Published: May 2024

Subject. Xerostomia.
Objectives. To analyze risk factors, to identify the incidence of xerostomia and a healthy lifestyle of students of the Faculty of Dentistry of the Ural State Medical University (USMU).
Methodology. The work was carried out at the Department of Therapeutic Dentistry and Propaedeutics of Dental Diseases, at the Department of General Chemistry of USMU, at the Department of Controlled Systems Modeling of UrFU. The objects of the study were: a questionnaire consisting of two parts and volunteers – students of the Faculty of Dentistry of USMU. The first part of the questionnaire is based on the questionnaire "List of cases of xerostomia" modified by the authors of this study to 12 questions. The second part of the questionnaire (author's) consists of 29 questions on a healthy lifestyle (HLS), which also affect the development of xerostomia. Thus, the total number of questions in the questionnaire was 41. Statistical processing of the results was carried out on a personal computer using the Microsoft Excel 2007 application software package; the reliability of the differences was assessed by the Student's t-distribution using the Statistica 6.0 software package; the confidence interval for mathematical expectation M ± m was determined, where M is the sample average. The differences are considered.
Conclusions. Students of the Faculty of Dentistry of USMU adhere to the rules aimed at maintaining the health of the oral cavity: they change their toothbrush (from 3 to 5 times a year – 85%), brush their teeth for at least three minutes (more than 48%) twice a day (77.7%) and use additional means of interdental hygiene (76.7%). 38% indicate dry lips. Dryness in the nose is emphasized by 14.1% of students. "Dry mouth is associated with elevated blood sugar", 2% of the study participants noted. It is advisable to investigate the problem of prevention of dental diseases, individual and professional oral hygiene programs, as well as regular general hygiene measures and the elimination of bad habits among students.
ANALYSIS OF A CLINICAL CASE OF VULGAR PEMPHIGUS ASSOCIATE WITH CHRONIC EBV INFECTION (GLOSSITIS CAUSED BY EBV)
Authors: Zhalilova Anastasiya , Trunin Dmitriy , Kopylova Oksana , Almohamad Hosam
Published: May 2024

Background. One of the autoimmune diseases is pemphigus, a chronic malignantly occurring autoimmune dermatosis accompanied by the development of blisters on the skin and mucous membranes. Isolated lesions of the SOPR occur in 10–20% of cases, complicating differential diagnosis. Numerous studies have proven the role of herpes virus infection as an aggravating factor in the course of true acantholytic pemphigus. The aim of the study was to determine the features of the clinical course of vulgar pemphigus against the background of reactivation of chronic EBV infection (glossitis caused by EBV). The clinical case of a patient with a diagnosis of “Vulgar pemphigus. Glossitis caused by the Epstein-Barr virus”. The anamnesis of the disease was carefully collected, a clinical and laboratory examination was performed with a cytological examination of a smear taken from a LITTER, a general blood test with an expanded leukocyte formula, C-reactive protein. In order to diagnose the viral load, PCR diagnostics was performed on the DNA of the herpes virus 1, 2, 4, 5 types in saliva, on the DNA of EBV in the blood, quantitatively. Specific antibodies of Ig classes M and G to EBV were determined by the ELISA method. Results. Due to the lifelong persistence of EBV in the structures of the oral cavity, its reactivation leads not only to chronic pastoral infection and the local development of the corresponding glossitis, but also, first of all, to a decrease in the level of local immunity. This fact aggravates the course of pemphigus, shortens the period of absence of relapse. The appointment of antiviral therapy at the first visit allowed to stabilize the symptoms caused by EBV, which led to positive dynamics in the course of pemphigus against the background of average dosages of prednisone in a shorter time. Conclusions. With clinical and laboratory confirmation of chronic EBV infection (glossitis caused by EBV), it is recommended to include antiviral and immunocorrective drugs, systemically and topically, in the complex treatment of pemphigus erythematosus.
TO STUDY THE EFFECT OF DIFFERENT DOSES OF RADIATION EXPOSURE ON THE LEVEL OF MINERALIZATION IN DIFFERENT AREAS OF HARD DENTAL TISSUES BY RAMAN FLUORESCENCE
Authors: Nurieva Natalya , Belaykov German , Tezikov Dmitry
Published: May 2024

Subject. Changes in the mineralization of hard tissues of teeth under the influence of radiation factor.
Objectives. To study the effect of radiation factor on the level of mineralization of hard dental tissues by Raman fluorescence.
Methodology. The study was conducted at the Department of Orthopedic Dentistry and Orthodontics of the SUSMU. The study was conducted on clinically removed teeth. All teeth were divided into three groups depending on the amount of radiation exposure (2 Gy, 70 Gy, 110 Gy). The main research method was the study of raman fluorescence of tooth sections on the hardware and software complex "InSpectr" with diagnostic sensitivity for the integral concentration of aerobic-anaerobic microbial suspension up to 109 CFU/ml. Teeth were examined in three areas (neck, equator, cutting edge) before and after radiation exposure.
Results. Raman fluorescence diagnostics of the tooth surface made it possible to visually see the difference in mineralization in digitized indicators. For example, according to the indicators before and after exposure to the radiation factor, it is clear that the mineralization indicators, regardless of the dose, had no significant differences. At the same time, there are significant differences in the level of mineralization in the area of different tooth settings (equator, cervical region, cutting edge).
Conclusion. In different areas of the tooth surface, the level of mineralization of hard tissues differs. The smallest is observed in the area of the neck of the teeth (incisors, y = 145 ± 1.5, x = 963 cm-1, canines, y = 141 ± 1.1, x = 963 cm-1, premolars, y = 142 ± 1.8 , x = 963 cm-1, molars, y = 143 ± 1.3, x = 963 cm-1), middle, in the area of the cutting edge and occlusal surface (incisors, y = 374 ± 1.7, x = 963 cm-1, canines, y = 377 ± 1.3, x = 963 cm-1, premolars, y = 375 ± 1.2, x = 963 cm-1, molars, y = 375 ± 1.1, x = 963 cm-1), and maximum, in the equator region (incisors, y = 413 ± 1.1, x = 963 cm-1, canines, y = 414 ± 1.9, x = 963 cm-1, premolars, y = 415 ± 1.7, x = 963 cm-1, molars, y = 419 ± 1.6, x = 963 cm-1).
The method of Raman-fluorescence diagnostics makes it possible to detect changes in mineralization due to the potential difference in the areas of hard tooth tissues in various areas (neck, equator, cutting edge) of all functional groups of teeth (incisors, canines, premolars, molars) both before and after direct radiation exposure, direct radiation exposure does not significantly change the level of mineralization of hard dental tissues, regardless of the dose applied in all functional groups (incisors, canines, premolars, molars), in all areas of the teeth (equator, cutting edge, cervical region).
STUDY OF THE MACRO- AND MICROELEMENT COMPOSITION OF ORAL FLUID DURING PROFESSIONAL TEETH WHITENING
Authors: Uspenskaya Ol'ga , Nikulicheva Leyla
Published: May 2024

Aesthetic dentistry is one of the up-to-date trends in dentistry. There are a lot of methods targeted at eliminating discoloration, including teeth whitening. The dentist’s task is to choose the optimal whitening system. Patients, especially those who work in hazardous industries, are also interested in getting a snowwhite smile. The authors have conducted a comparative assessment of the effectiveness of a chemical activation system with a 37% concentration of hydrogen peroxide (USA) with a chemical activation system with a 35% concentration of carbamide peroxide (Russia). Changes in the chemical composition of oral fluid were revealed after the professional whitening procedure.
The subject of the study is the chemical composition of oral fluid.
The goal is to study the chemical composition of oral fluid during teeth whitening procedures.
Methodology. The studies were carried out on the basis of the Department of Therapeutic Dentistry of the Federal State Budgetary Educational Institution of Higher Education “Privolzhsky Research Medical University” of the Ministry of Health of Russia, Autonomous Non-Profit Organization “Center for Biotic Medicine” of Dr. A.V. Skalny, State budgetary institution of the Ryazan region “Dental Clinic No. 1” (Ryazan).
The study involved 50 patients of both sexes from 23 to 45 years old, who were employees of an aircraft repair plant in Ryazan. Patients were divided into two groups. A chemical study of oral fluid was performed for 50 people before teeth whitening and for 15 people, in the control group, after teeth whitening.
Results. Determined macro- and micro elements differed in quantitative content between the studied groups. Comparing the obtained data of the concentration of elements in saliva with the results of the work of other researchers, we can conclude that there is a scattering in the results according to the literature, possibly due to the different “microelement” status of the regions in which the sample donors live.
Conclusions. The results of the study demonstrate that both whitening systems have a pronounced effect on the chemical composition of the oral fluid, while the system based on 37% hydrogen peroxide led to a greater degree of normalization of the level of chemical elements in the oral fluid.
Improving resilience and efficiency in the energy sector: A perspective on cybersecurity and renewable energy storage.
Authors: Ogunleye Oluwadamilola , Adeniji Sulaimon , Onih Valentine , Simo Yufenyuy , Elom Emmanuel , Kanu Emmanuel , Bello Abdul-Waliyyu , Obunadike Callistus , Chukwu Nnaji , Ejiofor Oluomachi , Ogutu Juliet , Obunadike Chinenye , Clement Tosin , Kizor-Akaraiwe Somto
Published: May 2024

The study investigates how resilience and efficiency can be improved in the energy sector using cybersecurity. The main objective of the paper is to enable organizations in the energy sector to develop a robust framework to manage renewable  energy storage effectively with little to no cost consequence because of cyberattacks. A survey data saved in the repository of Kaggle was extracted and utilized for the purpose of the study, it contains cybersecurity indicators such as anomaly score, log source, attack types, attacks severity, and response action, which were the features adopted for developing a model, while the target variable was renewable energy generation. A machine learning approach was adopted, with the Rsquared indicating that 61 % variation in renewable energy store is explained by the features included in the model. The study recommends that there should be an increased investment in cybersecurity structure to safeguard energy systems against cyber threats. Also, stakeholders should implement comprehensive training programs to enhance cybersecurity awareness and skills of personnel working in the energy sector.
Improving Speaking Skill of Islamic Senior High School Students in Palembang by Using Readers’ Theatre
Authors: AMYAN LUSI
Published: May 2024

The purpose of this study was to look at the improvement on the eleventh grade students’ speaking skill who were taught by using Readers’ Theatre strategy at one of Islamic Senior High School in Palembang. Quasi-experimental design with a non equivalent pretest-posttest design was used in this study. By using purposive sampling, the eleventh grade students at one Islamic Senior High School in Palembang consisting of 114 students were selected to be 50 students. They were classified into 2 groups (control and experimental groups). Each class consisted of 25 students. The speaking test used as the only intrument in this study were administred twice as pre-test and posttest. In analyzing the data, paired sample t-test and independent sample t-test in SPSS 21 were used. From the calculation of paired sample t-test, it was found that the p-output was 0.000. Then, from the result of independent sample t-test, the p-output was 0.000. Since the p-outputs were lower than 0.05, it could be concluded that teaching speaking skill by using Readers’ Theatre strategy had a significant improvement and significant difference on the students’ speaking skill. It means that readers’ theatre strategy was effective in improving students’ speaking skill at one Islamic Senior High School in Palembang.
Academic Supervision of Madrasah Supervisors in Improving Professional Competencies of Teachers
Authors: HUDA SYAMSUL , MUSPAWI MOHAMAD
Published: May 2024

Academic supervision is important to improve teacher’s competency. This study aimed at revealing how thep academic supervision for Madrasah supervisor was implemented to improve the professional competence of religion teachers at MTS N 8 Bungo, Jambi. This study also explained some factors which affected the process of implementation, barriers and efforts in conducting that academic supervision. This study used qualitative method with a case study approach. The subjects of the research were Madrasah supervisors, Madrasah headmasters, and the teachers. The results of the study showed that the performance of Madrasah supervisors at MTS N 8 Bungo, Jambi was not optimal. It can be seen from the fact that the process of the supervision had not been conducted based on laws. As the result, the teachers’ professionalism had not been improved yet.
Ta'dib
Authors: Chief Editor In
Published: May 2024

Journal of Islamic Education: Full_Vol 23_No_2_December_2018
Analysis of the Environmental, Social, and Governance (ESG), Retention Ratio, and Leverage Impacts on Stock Returns with Company Value as a Moderation Variable
Authors: Pratama Dimas Umbara , Robinson Robinson
Published: May 2024

Efforts to enhance company performance through adherence to corporate governance principles are demonstrated in the company's comprehensive ESG (Environmental, Social, and Governance) disclosures. In evaluating these disclosures, it is imperative to weigh the impact of leverage and retention ratio. The survey conducted by Globescan and the Global Reporting Initiative (GRI) has revealed a significant lack of awareness regarding the importance of these factors among typical companies in Indonesia. Hence, this study examined the ESG, retention ratio, and leverage impacts on stock returns with company value as a moderation variable. The samples of this study comprised 14 financial companies listed on the Indonesia Stock Exchange within the timeframe of 2018-2022. Data for the analysis were extracted from the IDX website and the official websites of the respective companies. Employing Eviews 9 software, multiple linear regression analysis was conducted to unravel insights into the relationships under scrutiny. The discerned outcomes unveiled that neither ESG nor leverage significantly impacted stock returns. In contrast, the retention ratio emerged as a potent factor with a noteworthy influence. The company value could moderate the ESG and the retention ratio impacts on stock returns, yet it proved ineffective in moderating the leverage impact on stock returns.
Systematic Literature Review Application of Transferable Skills As A Key Factor For Vocational School Graduates
Authors: Yuliyanto Riyan , Susilaningsih Susilaningsih , Indriayu Mintasih
Published: May 2024

The gap between the competence of vocational school graduates and employers' expectations results in high unemployment among vocational school graduates. Therefore, vocational education needs to develop transferable skills to create a workforce ready to face the demands of the modern job market. This systematic literature review explores the importance of transferable skills and their impact on vocational schools. This study focused on scientific articles published between 2014-2023 using the Scopus database. This review identifies a growing body of literature that emphasizes the importance of equipping students with competencies that are not only relevant to their specific tasks but also valuable across a range of Occupational contexts. The increase in publications in 2023 indicates an increased scientific interest. The focus of research that is widely studied is curriculum, practical learning, extracurricular, and lifelong learning. Collaboration strategies between educators, institutions, and industry partners in developing responsive and relevant curricula will support the development of transferable skills. Then, in the end, the study also proposes future research topics.
The Influence of Digital Marketing on Purchasing Decisions at Maliha Beaute Karawang
Authors: Fitriyan Silvi , Hendriyani Rina Maria
Published: May 2024

This study aimed to determine how much digital marketing influences purchasing decisions at Maliha Beaute Karawang. The research method is descriptive quantitative. One hundred eighty-four research respondents were clients of Maliha Beaute Karawang—data collection techniques through questionnaires. The collected data were analyzed using descriptive analysis and quantitative analysis of multiple linear regression. The study results show that digital marketing positively and significantly affects purchasing decisions. Then simultaneously shows that digital marketing positively and significantly affects purchasing decisions because the coefficient of determination is variable digital marketing on purchasing decisions of 0.518 or 51.8%, 51.8% of the purchase decision is influenced by digital marketing. At the same time, other variables outside of this study influence the remaining 48.2%.
Local wisdom in the Guwosari for its Preservation in the Development of Campus II UIN Sunan Kalijaga
Authors: Zamhari Muhammad , Wirabhuana Arya , Arief Syaeful
Published: May 2024

The university's development should not overlook the valuable indigenous knowledge inherited within the local community. Local wisdom comprises the customs and practices that have evolved among particular individuals, rooted in their deep understanding of the local environment accumulated over generations of inhabiting the area. Therefore, when expanding UIN Sunan Kalijaga in the Pajangan region, it is crucial to consider these aspects. This study aims to identify and document the local wisdom present in the Guwosari area, emphasizing its importance for preservation during the development process of Campus II UIN Sunan Kalijaga. A qualitative research method was employed due to the natural setting in which the study was conducted. The findings reveal several enduring legacies of local wisdom, such as the Selarong caves, untouched forests, and the landscapes and waters passed down through the ages. These legacies must be safeguarded and conserved, with development initiatives giving due attention to their protection.
Landuse Changes in Pancor Village, Selong District, East Lombok Regency 2019-2023
Authors: Mulawarman Rahmat , Iemaaniah Zuhdiyah Matienatul
Published: May 2024

Land use changes have positive and negative sides. Land use changes are influenced by population growth, thereby increasing the area of settlement area and other buildings as supporting facilities around settlements. Agricultural land is productive land that is used for staple food production and is subject to land conversion. The reduction in agricultural land results in reduced agricultural production which can threaten food security. In addition, land conversion is increasing, having a negative impact on the surrounding environment. The aim of this research was to determine land use changes in Pancor Village in the last 5 years. This research was carried out in Pancor Village by collecting field data obtained through the East Lombok ATR/BPN service and carrying out spatial analysis using ArcGIS 10.8. The results of the research show that in the last five years there has been a decrease in the area of rice fields by 33.8 hectares, fields/moors by 2.275 hectares, plantations by 0.035 hectares, while settlements and built-up land have increased by 36.11 hectares
EDUCAÇÃO EM SAÚDE EM UMA COMUNIDADE QUILOMBOLA DO NORTE BRASILEIRO:
Authors: Gomes Siqueira Santos Leilivan , De Azambuja Picoli Morgana , Menezes Gomes Paloma , Rodrigues Silva Maristelha , Aneanes da Silva Gislaine , Rodrigues Nunes Borges Allana , Morbeck Zica Matheus , Bastoni da Silva Juliana , Cristina dos Santos Almeida Mirian , Vilela Hipólito Ulisses , Da Silva Maciel Érika , Rodrigues Peixoto Quaresma Fernando , Sinésio Silva Neto Luiz , Matheus Santos Medrado Antônio
Published: May 2024

A higiene é caracterizada como um conjunto de ações e escolhas que sustentam uma vida saudável, a qual envolve aspectos individuais e coletivos - como a adoção de hábitos de autocuidado como também o acesso a condições mínimas à água potável e saneamento básico. A educação em saúde é uma estratégia importante para promover comportamentos e hábitos de vida saudável.  Este trabalho é um relato de experiência da realização de uma oficina de educação em saúde com ênfase em Higiene e Higienização das Mãos, em uma unidade escolar de uma Comunidade Remanescente Quilombola (RCQ) no interior do Tocantins.
EXTENSÃO UNIVERSITÁRIA EM PAUTA NO PODSER CIÊNCIA, O PODCAST DA UNIVERSIDADE FEDERAL DE SÃO PAULO
Authors: Arruda Agnes , Teixeira Lima Jr Walter , Vilefort Loiane
Published: May 2024

PodSer Ciência é um podcast criado, produzido e divulgado pelo Departamento de Comunicação Institucional da Universidade Federal de São Paulo. Neste artigo, apresenta-se um estudo descritivo de caso, dando evidência ao enfoque transdisciplinar do produto. Com foco nos projetos de extensão, tem-se ainda uma dimensão sociopolítica no podcast, que surgiu durante a pandemia de covid-19, quando a busca por conteúdo tanto no formato de áudio, quanto na temática “ciência” entraram evidência. Objetiva-se compreender de maneira sistematizada, em um artigo/relato de experiência, o contexto de produção dessa mídia, como uma maneira de garantir informação de qualidade a quem mais precisa dela, e a partir de quem tem, na universidade pública e socialmente referenciada, a condição de entregá-la.
Examining How Supplemental Instruction Impacts Students’ Motivation in Organic Chemistry
Authors: Guyot Michael , Hsu Samantha , Nizomov Javlon , Antonenko Pavlo , Habenicht Stefanie
Published: May 2024

This study investigates the effect of Supplemental Instruction (SI) on students’ motivation and learning outcomes in an introductory Organic Chemistry course for non-majors. SI, conducted by experienced facilitators, offers a range of academic support for students that may include reviewing challenging concepts, working through practice problems, and answering student questions. To assess the impact of SI in this Organic Chemistry course, we measured several parameters: student engagement during SI sessions, exam scores and final course grades, as well as self-reported motivation levels at both the beginning and end of the semester. We performed a linear regression analysis and observed a positive correlation between SI participation and improved performance on certain exams for SI participants. Further analysis showed that student motivation alone could be driving these improvements. These results suggest that while SI may be beneficial for some students, greater emphasis should be placed on ensuring that students are motivated to learn difficult concepts.
Improving Teachers' Skills in Digital Literacy through Workshops at SD Negeri Trayu Kapanewon Samigaluh, Kulon Progo Regency in the 2022/2023 Academic Year
Authors: Asih Asih
Published: May 2024

The purpose of the study was to determine the ability of teachers to use digital literacy with aspects of Internet Searching and Knowledge Assembly, and to determine the ability of researchers to manage workshops. The research method used in this study is school action research using three cycles, each cycle consisting of planning, implementation, observation, and reflection. The subject of this research is the teachers of SD Negeri Trayu Kapanewon Samigaluh Kulon Progo Regency, totalling 8 people consisting of 6 class teachers and 2 subject teachers. Data collection using qualitative data and quantitative data. Observation sheets were used to collect data on the use of digital literacy and workshop management data. The results showed that at the stage of lesson planning by teachers as a whole, the total number received an average score of 2.46 with an unsatisfactory predicate, then at the implementation stage, the average result was 2.24; with a less good category. Furthermore, on the teacher's ability to use digital literacy as a learning resource which includes aspects of Internet Searching and aspects of Knowledge Assembly, as well as on its implementation, the average result is 4.35 with a very skilled category.
Increasing Teacher Participation in Using Digital Literacy with Interactive Animation Media in Thematic Learning Through In-House Training at Tegalharjo State Elementary School for the 2022/2023 Academic Year
Authors: Suprihatin Suprihatin
Published: May 2024

The aim of this research is to improve teachers' ability to use digital literacy with animated interactive media and to increase participant participation in taking In-House Training (IHT) at Tegalharjo Kapanewon Kalibawang Elementary School, Kulon Progo Regency. This research is school action research carried out at Tegalharjo Kapanewon Kalibawang Elementary School, Kulon Progo Regency. Data techniques and analysis use observation sheets and assessment instruments. This research was conducted in 2 cycles where each cycle consisted of 2 meetings. Participants' participation in taking part in the IHT each cycle has increased, in the first cycle of the 1st meeting and the 2nd meeting there was an increase of 13.22%. Meanwhile, in cycle II for the 1st meeting and the 2nd meeting there was an increase of 6.28%. The use of animated interactive media in cycle I for the 1st and 2nd meetings reached 12.50%. Cycle I at the 2nd meeting and Cycle II at the 1st meeting reached 5.13%. Furthermore, in cycle II of the 1st meeting and cycle II of the 2nd meeting there was an increase of 6.10%. Regarding IHT management by researchers in cycle I for the 1st and 2nd meetings, there was an increase of 5.42%. Furthermore, cycle I at the 2nd meeting with cycle II at the 1st meeting achieved an increase of 5.62%. In cycle II, at the 1st and 2nd meetings, there was an increase of 5.63%. So it can be said that teacher participation and ability to use digital literacy with animated interactive media through IHT activities can increase.
Increasing Teacher Ability in Implementing Mind Map Based E-Modules by Strengthening Students' Independent Learning Character through IHT at Banjarharjo Kalibawang Kulon Progo Public Elementary School for Academic Year 2022/2023
Authors: Kandibah Umi
Published: May 2024

The aim of this research is to improve the ability of teachers to apply Mind Mapp-based E-Modules by strengthening students' independent learning character through IHT and improving the ability of researchers to manage IHT at the Banjarharjo Kalibawang Kulon Progo State Elementary School for the 2021/2022 academic year. The type of research carried out was School Action Research (PTS) which was carried out over 2 cycles consisting of 2 meetings. The subjects of this research were 8 teachers consisting of class teachers and subject teachers at the Banjarharjo Kalibawang Kulon Progo Public Elementary School. Observation results regarding the feasibility of implementing E-modules in each cycle, cycle I 1st meeting: reached 2.71: percentage 67.81%; following the 2nd meeting it reached 3.36; percentage 83.95%; following cycle II, 1st meeting, the average score reached 3.54; percentage 88.38%; following the second cycle II meeting the average score was 3.69; the percentage reached 92.19%. Based on participant activities, the average score for cycle I of the 1st meeting reached 3.06; percentage 76.42%; next cycle I, second meeting, the average score was 3.39; percentage 84.84%; Following are the results from cycle II of the 1st meeting, an average score of 3.54 was obtained; percentage 88.61%; Furthermore, the results obtained in the second cycle of the second meeting were an average score of 3.70; percentage 92.50%; Results of participants' assessments of researchers/resource persons for cycles I and II, the average score obtained for cycle I of the 1st meeting; 81.08%; following the 2nd meeting 84.30%, then in cycle II the 1st meeting reached 88.43%; Following are the results of the second cycle II meeting, the average score is 90.44%.
A Grounded Theory of Christian Public Administrators’ Integration of Faith and Work
Authors: Horne Christopher S.
Published: May 2024

About 28% of U.S. public administrators profess to be Christians who regularly attend church. Given potential impacts on public policy and services, it is important to understand how these administrators integrate faith and work. Following a constructivist grounded theory approach, this study presents a taxonomy of Christian public administrators’ faith–work integration based on analysis of 30 in-depth interviews. The taxonomy’s axes are: (1) purpose—pious versus instrumental, and (2) locus—personal, workplace relationships, or societal. All participants share faith-driven work motivation aligned with public administration values. Their mode of faith–work integration varies based on perceived religious liberty and orientations toward a sacred–secular divide versus a holistic Christian worldview. The model suggests individuals motivated by theonomic and proselytizing goals may self-select out of government service. This research offers implications for public sector leaders, educators, and Christian public administrators seeking insight into how to relate their faith and work.
Who Will Spare a Dime? Impulse Giving Decisions at the Checkout
Authors: Dula Lauren , Hansen Ruth K.
Published: May 2024

Campaigns asking for donations at the checkout of retail stores through rounding-up, donating an amount, or purchasing a token are becoming ubiquitous. The concept of “checkout charity” is really one of impulse giving, i.e., a prosocial activity done under time constraints. Industry reports inform us how much money the corporate campaigns are generating, but we have yet to develop a philanthropic profile of an “impulse giver” or compare them with traditional donors. Using the social heuristics hypothesis, this research helps us to better understand impulse giving and the individuals who engage in it. Women, the middle class, and those who are married or divorced were all more likely to give at the register. In contrast with formal giving, education levels had little relation to giving, and those approaching and over 50 years old were less likely to give. Familiarity with the charity and being Black or African-American correlate with greater amounts donated.
Influence of Reverse Finishing on Characteristics of Drilling Surface
Authors: Ochi Yuzuha , Usui Masatoshi , Sasahara Hiroyuki
Published: May 2024

Aluminum alloys are often used in automobile and aircraft parts that require higher dimensional accuracy and durability. Drilling is often used in the machining process of these products and accounts for about 60% of the machining performed on these products. Deterioration of finishing surface accuracy in drilling causes problems such as decreased tool life due to wear and increased cost due to the introduction of the finishing process. The objective of this study is to evaluate the finished surface characteristics in the drilling of aluminum alloys using reverse finishing, with a focus on the cutting direction of finishing, with respect to the roughing direction. The torque and thrust force are smaller in reverse finishing than in forward finishing. The reduction effects of cutting force in reverse finishing were more significant when the finishing depth of cut was smaller in relation to the roughing-affected layer. Under conditions where the finishing depth was equal to or greater than the roughing-affected layer, it was possible to reduce cutting forces and improve surface roughness while obtaining compressive residual stresses equivalent to forward finishing.
Milling of TiBbm2 Particle Reinforced High-Modulus Steel
Authors: Kato Hideharu , Matsumoto Kazuya , Ito Yukio , Sakamoto Shigehiko , Sumiya Hitoshi
Published: May 2024

TiB2 particle reinforced high-stiffness steel is one of the composite materials that aim to improve Young’s modulus by compositing TiB2 particles into a stainless steel base phase. This material is designed to exhibit higher rigidity and strength than conventional iron-based materials by using TiB2 particles as the reinforcing phase, and is expected to reduce the weight of high-load components in engines. For this reason, tool life is very short when machining this material. Therefore, high Young’s modulus steel containing TiB2 particles is known to be one of the most difficult-to-cut materials. The purpose of this study was to investigate how to extend tool life in the milling of high-Young’s-modulus steel. Cutting speed dependence of tool life was investigated by end milling using a binderless CBN tool with excellent hardness and bending strength. In addition, the tool damage mechanism was also investigated. The results showed that tools composed of binderless CBN tool have a longer life than conventional CBN tool. In this type of binderless CBN tool, the tool wear rate tended to increase with increasing cutting speed. In addition, the longest tool life was obtained at a cutting speed of 1.25 m/s, though wear rate increased at a boundary cutting length of 1300 m. The wear rate was found to increase with increasing cutting speed. Temperature measurement results indicate that the primary cause of tool damage was mechanical wear, as the temperatures were much too low for a reaction between cBN and Fe. Friction tests revealed scratch marks on the tool originating from crushed cBN particles produced by the crushing of the cutting edge. This indicates that wear is accelerated by the high frictional energy of the cBN powder rubbing against the flank face.
Inner Modulation Controlled Process for Suppression of Chatter Vibration in Double Inserts Turning
Authors: Atsuta Toshifumi , Yoshimura Hidenori , Matsumura Takashi
Published: May 2024

A novel cutting manner is presented to control regenerative chatter vibration in double inserts cutting, in which the forward and the backward inserts cut workpiece simultaneously with phase difference in the modulation of finished surface. In double inserts cutting, the forward insert is clamped above the backward insert. Both the inserts are positioned symmetrically with a height offset with respect to the workpiece rotation center. The forward insert mainly removes the material; while the backward insert cuts a part of the inner modulation to lose the regular excitation. The exciting force is also reduced with the cutting thickness of the forward insert after a workpiece revolution. Because the theoretical position offset of the inserts in the feed direction is small, the side cutting edges of inserts are aligned in the same position. The process parameters are determined by estimating the removal volume of the backward insert with the phase shift. The range of the cutting speed and the height offset are given by the frequency of the chatter vibration, which is nearly the same as the natural frequency of the workpiece in single degree of freedom. The proposed cutting manner is validated using comparison between the single insert and double inserts cuttings.
Durability Test of Microtome Blades with the High-Precision Tissue-Sectioning Machine
Authors: Satoh Hirotaka , Nakamae Keito , Sasaki Takehiro , Nanjo Hiroshi , Nakamura Ryuta , Kusumi Takayuki , Akagami Yoichi , Yoshino Masahiko
Published: May 2024

In this study, the durability of microtome blades, used for sectioning paraffin blocks, was evaluated with the goal of improving the quality of sections in pathology tests. First, for the durability test of microtome blades, a sectioning test device that realizes stable sectioning operations was developed. This device comprised precise stages supported by cross-roller guides, achieving sufficient rigidness. This device allowed automated repetitive sectioning and simultaneously measured the principal and thrust cutting forces. Samples embedding porcine kidney and rib tissues were used for the durability test. Two types of blades with different blade edge angles were used. Additionally, the rake face and cross-section of blades, as well as H&E-stained sections, were observed. In the durability test with porcine kidney tissue, good quality sections were obtained even after 100 times of sectioning with both microtome blades, showing sufficient durability. However, in sectioning porcine rib tissue, the microtome blade with a large blade edge angle produced good-quality sections in the initial phase of the durability test; however, defects such as overlapping of folds were observed after 100 times of sectioning. Meanwhile, the microtome blade with a small blade edge angle experienced blade damage from the early phase of the durability test, resulting in the production of unsuitable preparations for pathology tests. These results indicated that the microtome blade with a small blade edge angle lacked durability against hard tissues such as porcine ribs.
Boiling of Coolant Near the Cutting Edge in High Speed Machining of Difficult-to-Cut Materials
Authors: Obikawa Toshiyuki , Matsumoto Wataru , Hayashi Mamoru , Morigo Chikara
Published: May 2024

This study investigates film boiling of coolant as a cooling inhibitor in a narrow wedge-shaped space between the tool flank face and the machined surface of a workpiece, observed during high-speed turning of stainless steel SUS304 and nickel-based superalloy Inconel 718. The boiling, likely triggered by high surface temperatures at both the face and surface close to the cutting edge, impedes coolant access to the tool tip area and efficient cooling. Therefore, the impact of coolant pressure on the boiling zone size was initially explored across pressures ranging from 0.1 to 20 MPa. A burn mark band due to coolant boiling, distinctly visible on the flank face of an insert with a yellow hard coating, expanded over cutting time. The film boiling area width, or the distance from the flank wear area to the band, decreased with increasing coolant pressure, reflecting the enhanced cooling ability and tool life with high-pressure coolant. Applying Boyle–Charles’ law to film boiling indicated that vapor pressure was directly related to coolant velocity rather than pressure. In contrast, the boiling area width increased with increasing cutting speed.
Effect of Strain Hardening on Burr Control in Drilling of Austenitic Stainless Steel
Authors: Tamura Shoichi , Okamura Kota , Uetake Daisuke , Matsumura Takashi
Published: May 2024

Austenitic stainless steel has been widely used in various industries, such as aerospace, medical, and hydrogen energy, due to its high strength over a wide range of temperatures, corrosion resistance, and biocompatibility. However, stainless steel is a difficult-to-cut metal because its ductility and low thermal conductivity induce a strain hardening with significant plastic deformation at high temperatures. Burr formed at the back side of a plate is a critical issue which deteriorates the surface quality, especially in drilling. Burr removal operation, therefore, should be done in the machine shop. This study discusses the effect of strain hardening of austenitic stainless steel, SUS 316L, on burr formation. Hardness and cutting tests were conducted to compare the strain hardening effect for three types of workpieces: as-received, pre-machined, and tensile treated specimens. In the employed specimens, the tensile treated specimen is harder than the as-received specimen. Those specimens have uniform hardness in the depth direction from surfaces. Pre-machined specimen, in which the back side of the plate was finished by face milling, has a distribution of hardness in the depth direction from a surface. The highest hardness appears in the subsurface of the pre-machined specimen. The cutting forces in the steady processes, in which the entire edges remove material, were nearly the same as the tested specimens each other. However, remarkable differences were confirmed in the chip thickness and burr formation. The higher strain hardening of the tensile treated specimen is effective to suppress burr formation. The cutting characteristics are then identified to associate burr control with the shear plane model of orthogonal cutting using an energy-based force model. The shear stresses, shear angles, and friction angles of the tensile treated and as-received specimens are compared to discuss the effect of strain hardening on reduction of burr formation.
Feasibility Study of Single-Point Incremental Forming for Discontinuous-Fiber CFRP Using Oil-Bath Heating
Authors: Ikari Tatsuki , Tanaka Hidetake
Published: May 2024

Although, three-dimensional printing has several advantages, however there are currently many limitations. In particular, printed products using composite materials such as fiber-reinforced plastic have yet to achieve the same mechanical properties as those obtained from conventional manufacturing methods. In addition, fabricating thin plates or thin shell shapes with sufficient strength is challenging. Incremental forming enables high-mix, low-volume production of thin sheets. This method applies incremental deformation to thin sheets, the desired shape is obtained by accumulating the deformation, and no dies are required. Carbon-fiber-reinforced plastic (CFRP) materials have high specific strength. Discontinuous-fiber CFRP is capable of large plastic deformation under appropriate conditions due to the discontinuity of the reinforcement, and its mechanical properties are nearly isotropic due to the random fiber arrangement. The authors focused on this property and studied the application of single-point incremental forming to discontinuous carbon-fiber-reinforced polyamides. In this study, the workpiece was formed by heating it locally to a deformable temperature by the frictional heat between the rotating tool and the workpiece. The forming experiment was also conducted in an oil bath to keep the entire material at a suitable forming temperature. The results showed that the spindle speed affected forming results even in an oil bath and that heating using an oil bath suppressed deviations from the sine law for thickness and wall angle due to elastic deformation.