bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence Of Service Quality On Customer Satisfaction at PT. PLN Mattoanging Customer Service Unit In Makassar
Authors: Nurlinda Nurlinda , Alam Andi Rifqah Purnama , Anggreni Dewi , Sofiansyah Nurul
Published: February 2025

This research was conducted at PT. PLN Mattoanging Customer Service Unit, located at Jalan Monginsidi No. 2, Makassar City, over a period of two months. The research data was obtained from two sources, primary data and secondary data. Primary data was gathered through questionnaires, observations, and interviews with customers, while secondary data was collected from report documents, relevant regulations, and interview results. The data collection method involved observation techniques to obtain preliminary information, questionnaires to capture respondents' written responses, and literature studies to support the investigation related to customer loyalty. The sample size for this study consisted of 100 respondents. The data analysis method involved descriptive analysis to describe the data obtained from the questionnaires, as well as simple linear regression analysis to estimate the relationship between the independent variable (service quality) and the dependent variable (customer satisfaction). The results of the linear regression data analysis showed that y = 2.928 + 0.200x, with a correlation coefficient of 0.765 and a coefficient of determination (r²) of 0.5863 or 58.63%. From the t-test hypothesis testing, it was found that t-count = 12.0221 > t-table = 1.65993. Based on these results, it can be concluded that customer satisfaction is significantly and positively influenced by the service quality of PT. PLN Mattoanging Customer Service Unit in Makassar. Thus, the findings of this research are acceptable.
The Impact of Financial Performance on Stock Prices of Sub-Coal Production Mining Companies Listed on the Indonesia Stock Exchange (IDX) 2020–2022
Authors: Puspita Dewi , Syamsuddin Syamsuddin , Hasan Asriani
Published: February 2025

Financial performance is a depiction or assessment of the effectiveness, efficiency, and success of an organization, particularly a company, in managing and optimizing financial resources over a specific period. This study aims to examine the effect of the Current Ratio (CR), Return on Equity (ROE), and Debt to Equity Ratio (DER) on the stock prices of coal production sub-industry mining companies listed on the Indonesia Stock Exchange (IDX) for the 2020–2022 period. This research employs a quantitative method. The sampling technique used in this study is purposive sampling. The data used in this study is secondary data, including financial reports and stock prices obtained from www.idx.co.id. The study utilizes partial linear regression analysis using SmartPLS version 4.0.9.9 software. The results of this study indicate that the Current Ratio (CR) variable does not have a significant effect on stock prices. Furthermore, the Return on Equity (ROE) variable significantly affects stock prices with a significance value of 0.007 < 0.05. Lastly, the Debt to Equity Ratio (DER) variable does not have a significant effect on stock prices.
СТРАТЕГІЇ КРЕАТИВНОГО МЕНЕДЖМЕНТУ ДЛЯ АДАПТАЦІЇ ОРГАНІЗАЦІЙ В УМОВАХ ВІЙНИ
Authors: БІЛИК Вікторія , ШПИЛЬОВА Віра , ЧОРНИЙ Назарій , КОЛОМІЄЦЬ Оксана
Published: February 2025

The article provides conceptual characteristics of creative management as a tool that allows for the formation of a set of management solutions, with the help of which it is possible to develop new business ideas and successfully implement them when the external environment of the organization is characterized by an increase in challenges and threats. The need to implement a strategic approach by domestic organizations in establishing creative management is substantiated, the guidelines of which should be considered the development of human capital and the establishment of intellectual and personnel support, which is increasingly difficult to achieve in war conditions. The system of goals and objectives of the strategic policy of creative management, which need to be taken into account by domestic organizations for adaptation to the conditions of war, is defined. A targeted approach to the development and implementation of a creative management strategy for the adaptation of organizations in war conditions consists in creating an optimal personnel development system that ensures the achievement of set goals, guaranteed results and cost minimization, and also takes into account the development of labor resources as a motivating factor. Methods of personnel training as elements of a creative management strategy for adapting organizations in war conditions are summarized. Of course, organizations are not able to face the existing challenges and threats if they do not adhere to the creativity and innovation that embraces creative management. According to this approach, domestic organizations are better able to adapt to external changes, and especially when the economy is in a state of war and the observance of typical methods cannot fully achieve the expected results, and it is necessary to establish procedures for updating and modernizing the management system.
ВПЛИВ ЕКОЛОГІЧНОГО МАРКУВАННЯ НА СПОЖИВЧІ ПЕРЕВАГИ ТА ЯКІСТЬ ПРОДУКЦІЇ
Authors: ДОНЧАК Леся , ШКВАРУК Діна
Published: February 2025

The article examines the impact of eco-labeling on consumer preferences and product quality. The study analyzes the role of eco-labeling as a tool for enhancing consumer trust in products, promoting responsible consumption, and improving the competitiveness of enterprises. The main types of eco-labeling according to international ISO standards are considered, highlighting their importance in ensuring product safety and implementing sustainable production practices. Key issues related to eco-labeling are identified, including greenwashing, high certification costs, and low consumer awareness, which complicate the effective functioning of this system. Special attention is paid to the absence of unified international eco-labeling standards, which creates barriers to international trade and affects consumer trust. The article also discusses the impact of eco-labeling on purchasing decisions, showing that certified products enjoy greater consumer confidence and market advantages.To address these challenges, the article proposes directions for improving eco-labeling, including the introduction of digital technologies such as QR codes and blockchain, expanding government incentives for sustainable production, and developing a unified international certification system. The study emphasizes the need for stricter regulatory mechanisms to prevent misleading environmental claims and increase transparency in certification processes. The article provides recommendations for enhancing the effectiveness of eco-labeling as a key instrument for sustainable economic development and the formation of an environmentally responsible society. The findings contribute to the discussion on the future of eco-labeling and its role in shaping environmentally conscious consumer behavior.
BACHELOR’S PROGRAM IN “INTEGRATED DESIGN” AND ITS IMPLEMENTATION IN INTERNATIONAL DESIGN SCHOOL AT COLOGNE UNIVERSITY OF APPLIED SCIENCES
Authors: SHVETS OLENA
Published: February 2025

The paper is aimed at thorough studying and analysis of Bachelor’s program in “Integrated Design” in International School of Design (KISD) at Cologne University of Applied Sciences to outline positive features and aspects of the experience that can be borrowed for implementing similar programs in universities of developing countries. It has been defined that KISD Bachelor’s program in “Integrated Design” relies on study that goes beyond the traditional framework of design and combines different designer approaches, practice and techniques. It presupposes students’ work in at least ten out of twelve KISD branches of knowledge: Image and Motion, Identity and Design, Design for Manufacturing, Design Concepts, Design and Economy, Design Theory and Research, Gender and Design, Interface Design and Interaction Design, Ecology and Design, Production Technology, Service Design, Typography and Layout. Students’ professional orientation in KISD is organized in four stages: Discoveries; Connections; International; Focus. Additional requirement is a program-related aptitude test due to which students can demonstrate their aptitude to the program. Bachelor’s program in “Integrated Design” specialty offers 2 courses of study to students at the end of the first year of studying: “Integrated Studies in Design” and “European Studies in Design”. Study at the program of “Integrated Design” is project-oriented and organized in modules. Successful completion of the study program is verified by module exams throughout the whole study program and Final Exam (Bachelor’s thesis and Final Presentation). Exams can be of several types: oral, written, other (home assignments, a Study Journal (portfolio) etc.) and combined. The Defense takes place after the Presentation and is aimed at evaluating students’ abilities to present the work orally, independently explain and be aware of the practical application of the results of the Bachelor’s thesis; its subject-related and methodical aspects; interdisciplinary contexts; and interdisciplinary prospects. The procedure of calculating the final accumulative grade for the Bachelor’s exam has been described in detail.
DEVELOPMENT OF NON-FORMAL ADULT EDUCATION IN FOREIGN COUNTRIES
Authors: VASHCHENKO LYUBOV
Published: February 2025

Features of non-formal and formal education are analyzed in the article. The specificity of formal education lies in the longevity of goals, academic content, the implementation of external quality control of education, structure, standardization, resource consumption, the availability of a document on education. Non-formal education is based on the integration of learning and life. It covers learning activities for people of all ages (children, adults, the elderly, whether girls, boys, women or men), in any living environment (family, school, community, workplace, etc.), and through various forms that together meet a wide range of educational needs. The author draws attention to the validation of non-formal education in foreign countries and gives examples of legal support for this process in countries such as the United Kingdom (official recognition of non-formal education by the Department of Business, Innovation and Qualifications in 2009), France (Law on Social Modernization (2002) and the introduction of French legislation on the concept of validation of knowledge gained through experience (Validation des Aquis de l'Expérience), Finland (the system of validation of non-formal and informal education is supported by the state, the process of validation is improved and standardized), the Netherlands (Education Professions Act (2004) and EVC – Erkenning Verworven Competenties evaluation procedure), Germany (two research projects: Weiterbildungspass (Continuing Education Passport) and Lernkultur Kompetenzentwicklung (Development of Competences as a Learning Culture). The author concludes that today the opposition of formal and non-formal education is considered unproductive. Actions based on the complementarity of different types of education are considered appropriate.
ACADEMIC, SOCIAL, AND CULTURAL ADAPTION OF INTERNATIONAL STUDENTS IN CANADA
Authors: BANIT OLGA , BABUSHKO SVITLANA , BARANOVA LILIA
Published: February 2025

The study highlights three types of international students’ adaptation: academic, social and cultural. The most typical challenges in each adaptation are identified and described. Academic challenges include lack of language proficiency, different education values, interaction with the university faculty, staff and mates. Social issues for international students are living on- or off-campus, initial difficulties, independence and loneliness, relationship with domestic students and involving them into university life. Culturally, international students face the following challenges: culture shock, the lack of culture wellness. Thus, as demonstrated in this study, having a better understanding of these students’ challenges, university faculty and staff can recognize students’ needs and effectively offer supportive services. The university needs to be prepared to meet students not only academically but also socially and culturally. This study also describes the priorities in Canadian international education strategy that makes Canada one of the world’s top learning destinations. Federal and provincial governments Canada demonstrate their increasing interest in the global education market. It is reflected in the well-designed Canada’s International Strategy for 2014–2019. According to it, there are three key objectives before Canadian educational system: to encourage Canadian students to gain new skills through using opportunities to study and work abroad in key global markets, especially Asia; to diversify the range of countries international students come from to Canada, as well as their fields, levels of study, and location of study within Canada; increase support for Canadian educational institutions to help grow their export services and explore new opportunities abroad.
TEACHER CAREER DEVELOPMENT IN EUROPEAN COUNTRIES AND ITS CONSISTENCY WITH TEACHER COMPETENCE FRAMEWORK
Authors: SADOVETS OLESIA
Published: February 2025

The paper considers prospects of teacher career development in European countries, such as Poland, Italy, Spain, Slovenia, Greece, Hungary, Latvia, Lithuania, Sweden, Germany, Belgium and others. Main stages of career development and the role of teacher competence framework in this process have been characterized. Two types of teacher career development schemes in European countries – single (flat) and multi-level (hierarchical) – have been defined. It has been determined that teacher career promotion is only possible to stages that presuppose teaching. Requirements to teacher promotion to higher career stages are based on 6 criteria: positive evaluation; length of professional experience; demonstration of specific competences; specific professional development; research activities; running or designing professional development courses. The role of school administration and higher educational authorities (local and national) in decision making concerning teacher promotion in different European countries has been outlined. To get career promotion teachers can take on pedagogical or methodological responsibilities and roles outside classroom that can be diverse and related to subjects and curricula; student support; school life; teacher professional development; evaluation of teachers from other schools. It has been defined that in some countries, teachers are provided with career assistance that is the provision of information, coaching and counseling. Opportunities for teachers to extend their professional development and to get promotion to higher career steps have been analyzed. The key factor in decision making concerning teacher career promotion is teacher competence framework. It defines the fields of teacher competences. Some of these fields are common for all the frameworks but can be described in a different manner. As a rule, here belong psychological and pedagogical competences, subject knowledge and teaching approaches, organization of learning and assessment, innovative teaching approaches, communication with students, cooperation with colleagues, relations with parents and other stakeholders. Information in TCF is classified according to 4 categories: 1) initial teacher education; 2) introduction to the profession; 3) continuous professional development; 4) other.
STUDENTS' PERSPECTIVES ON THE USE OF QUIZIZZ AS A GAMIFIED PLATFORM FOR LEARNING ENGLISH SPEAKING
Authors: Nawawi Yosephine Fransiska , Regina Regina , Riyanti Dwi
Published: February 2025

This research described studentsâ€™ perspectives on using Quizizz as a gamified platform for learning English speaking and how they learn through it. It is a descriptive qualitative study. The study subjects were twenty-four Indonesian National Army in Regional Military Command (KODAM) XII Tanjungpura Pontianak personnel. The data were gathered using open-ended questionnaires and semi-structured interviews and analyzed thematically. It showed that Quizizz is a fun platform for learning English speaking. Quizizz positively impacted studentsâ€™ motivation, assistance, comfort, engagement, and focus during learning. With the support of Quizizz, the students were enthusiastic about learning English speaking more seriously. This gamified platform has increased their self-assurance to speak, competitiveness during learning, and goal awareness. Students are suggested to have an adequate internet connection to do Quizizz with ease and invite their friends to join and explore more English materials available there to gain more challenges in learning through play. The teachers should use the timer feature to reduce studentsâ€™ ability to look up answers as they work through Quizizz and alert them.
EXAMINING THE IMPACT OF ILLOCUTIONARY ACTS ON STUDENT ENGAGEMENT: A MIXED-METHODS STUDY
Authors: Wardhana I Gede Neil Prajamukti , Dewi Ni Luh Desy Suari , Nainggolan Fidelio Juan Gawi
Published: February 2025

This study used qualitative and quantitative methods to analyze the impact of speech acts, particularly illocutionary acts, on student engagement at Wira Harapan High School. Illocutionary acts, or expressions that perform actions (Vanderveken, 1990), are crucial for teacher-student communication. Through classroom observations and teacher interviews, this research examines their role in daily teaching. Over the course of the course of three months, diverse classes were observed to categorize instances of illocutionary acts. Interviews with teachers provided insights into their intentional use. Qualitative analysis and quantitative assessment offer a comprehensive understanding of their effect on student engagement. This study used the illocutionary acts theory (Searle, 1969) to underscore the importance of mindful communication in transforming the educational experience at Wira Harapan High School.Keywords: Illocutionary Acts, Wira Harapan High School, Speech Acts.
IMPLEMENTATION OF ARTIFICIAL INTELLIGENCE (AI) TECHNOLOGY IN ENGLISH LANGUAGE LEARNING THROUGH PUZZLE MAKER MEDIA
Authors: Pratiwi Dian , Yuniarti Fatma , Nuryanti Nuryanti
Published: February 2025

In today's digital era, the use of technology in education is increasingly important to improve the effectiveness and efficiency of the learning process. AI-based Puzzle Maker is expected to be an innovative tool to overcome challenges in English language learning, especially in improving students' vocabulary and comprehension skills. This study aims to evaluate the effectiveness of the application of Artificial Intelligence (AI) technology in learning English through Puzzle Maker media at SD Muhammadiyah Ambarawa. The method of data collection was through learning outcome tests (pre-test and post-test), classroom observation, and interviews with teachers and students. The results showed a significant increase in the students' average score from 60 in the pre-test to 85 in the post-test. The percentage of students who reached the Minimum Completion Criteria (KKM) also increased from 50% to 90%. In addition, classroom observations and interviews revealed that students' engagement and motivation in learning increased significantly.Teachers find it easy to deliver material and get automatic feedback through AI-based Puzzle Maker media. In conclusion, the application of AI technology in Puzzle Maker media is effective in improving students' learning outcomes, engagement and motivation, and simplifying the teaching process for teachers.Â
Explorando las demandas de capacitación en apicultura: un enfoque multirregional
Authors: Meza Cisneros Josueth Alfonso , Cantos Cruz Mayra Verónica , Añazco Chávez Joffre Paúl , Alcalá Escamilla Karla Itzél
Published: February 2025

Estudio exhaustivo y multirregional realizado en Ecuador, en el cual se abordó las necesidades de formación en el campo apícola. Con el propósito de analizar las demandas de capacitación en diversas áreas de la apicultura, como el manejo precosecha, cosecha, poscosecha, certificaciones y otros temas relevantes, se empleó una metodología mixta, que combina enfoques cualitativos y cuantitativos. Esto incluyó una encuesta dirigida a apicultores, técnicos y personas vinculadas con la apicultura, en varias regiones del país. Los resultados señalaron un marcado interés en la apicultura, acompañado de una clara demanda de formación en áreas clave: alimentación apícola, reproducción de colmenas, sanidad apícola, manejo de apiarios, diversificación de la producción y comercialización de productos apícolas. La diversidad de participantes señaló el compromiso con la mejora de habilidades y conocimientos en el ámbito apícola. Por lo tanto, es necesario comprender las prioridades de los apicultores, con el fin de planificar programas educativos efectivos que satisfagan sus necesidades reales, asegurando así un impacto positivo y sostenible en la práctica apícola. Finalmente, se recomienda una mayor claridad en futuros estudios acerca de los objetivos y grupos objetivo de las encuestas, así como enfoques inclusivos y adaptativos en las estrategias de capacitación en apicultura para promover el desarrollo sostenible del sector.
Cuidado de enfermería en paciente posoperatorio de revascularización miocárdica en la unidad de cuidados intensivos: estudio de caso
Authors: Dávila Gamboa Ángela Patricia , Guerrero Córdoba Julieth Ximena , Moreno Montenegro Norma Viviana , Chaves Claudia Amanda
Published: February 2025

El infarto agudo de miocardio es considerado una de las primeras causas de mortalidad a nivel regional, nacional y mundial; los factores de riesgo se convierten en el agente causal de esta patología. Por ello, cuando un paciente enferma, requiere de un tratamiento quirúrgico, como la revascularización miocárdica, donde la atención y manejo se hace en la unidad de cuidados intensivos (UCI), con el fin de garantizar su supervivencia. Para lograr la recuperación exitosa del paciente, se debe contar con un equipo multidisciplinario entrenado. En este contexto, el profesional de enfermería se convierte en el componente necesario e indispensable, que debe conocer a fondo la patología y el tratamiento establecido para realizar con juicio clínico el cuidado de estos pacientes. El objetivo del estudio consistió en determinar el proceso de atención de enfermería en paciente críticamente enfermo en posoperatorio de revascularización miocárdica secundaria a infarto agudo de miocardio atendido en UCI. La metodología utilizada fue estudio de caso observacional y descriptivo, con aplicación del plan de cuidados de enfermería según la taxonomía NANDA-NIC-NOC (North American Nursing Diagnosis Association, Nursing Interventions Classification y Nursing Outcomes Classification). El caso de estudio se realizó con un paciente que ingresó y refirió «dolor de pecho intenso»; después de identificar cambios electrocardiográficos y resultados positivos en las pruebas troponinas, se realizó un cateterismo cardiaco, seguido de revascularización miocárdica. Gracias al apoyo del equipo multidisciplinario, el paciente presentó una evolución satisfactoria. Por lo tanto, el cuidado de enfermería en un paciente con esta patología debe ser personalizado, centrado en lograr su estabilidad hemodinámica y su confort, teniendo en cuenta la magnitud del procedimiento, su complejidad, vigilancia y monitorización clínica.
The Relationship between Maternal Knowledge and Attitudes About Dental and Oral Health with Dental Caries Status of Children at Risk of Stunting at SDN Baumata Timur
Authors: Pinat Leny Marlina A. , Ngadilah Christina , Eky Yansestina Erlince , Pay Mery Novaria , Eluama Merniawati Sherly
Published: February 2025

Dental issues in children, impacting proper tooth growth, highlight parental responsibility for a child's oral health. Children depend on their parents for dental care, and unaddressed dental caries can lead to growth disturbances and increased stunting rates. The 2021 SSGI study shows a 37.8% stunting prevalence in East Nusa Tenggara, surpassing the national rate of 24.4%, with 15 districts in NTT exceeding 30%. In 2022, the national stunting rate decreased to 21.6%, but East Nusa Tenggara maintained a dominant 35.3% rate, with Kupang City and Kupang Regency exceeding the national average at 25.1% and 24.1%, respectively. This study aims to explore the relationship between maternal knowledge and attitudes concerning oral health and the occurrence of dental caries in children at risk of stunting at SDN Baumata Timur. Utilizing a cross-sectional approach, 62 students were examined, and their Body Mass Index (BMI-for-age) identified those experiencing malnutrition. Subsequently, students with malnutrition underwent dental examinations, and their mothers completed a questionnaire. Among the 62 students, 25 were identified as malnourished. Data analysis, employing correlation and multiple regression tests with a significance level of p < 0.05, indicates that maternal knowledge is not significantly related to dental caries in children, both in permanent (DMF-T) and deciduous teeth (def-t). Conversely, maternal attitudes significantly correlate with dental caries in children in both types of teeth. Multiple regression analysis reveals no significant relationship between maternal knowledge and attitudes regarding dental health and DMF-T in elementary school children (p > 0.05). However, a more significant relationship exists between maternal attitudes toward dental health and def-t in elementary school children (p=0.010<0.05). This highlights that maternal attitudes toward children's dental health influence their behavior, particularly regarding deciduous teeth. In conclusion, while no significant relationship exists between maternal knowledge and dental caries in children, a significant association is evident between maternal attitudes and dental caries in children with malnutrition at SDN Baumata Timur.
Use of Glass Ionomer Sealants in The Prevention of Occlusal Caries in Pediatric Permanent Teeth
Authors: Eluama Merniwati Sherly , Pinat Leny Marlina A. , Pay Mery Novaria , Obi Applonia Leu , Wali Agusthinus
Published: February 2025

In Indonesia, according to the Riskesdas data, only 0.1% of 15-year-old children received fissure sealant treatment. Glass ionomer sealants can prevent caries on newly erupted permanent molars and are a good alternative because they are cheaper, painless, and easy to apply. The study aimed to evaluate the retention of glass ionomer sealants in preventing occlusal caries on permanent molars in children. The research method used an experimental design. The independent variable was the filling of deep fissures with Fuji VII glass ionomer, and the dependent variable was the occlusal status of the left and right lower first permanent molars, which included teeth that had been sealed with glass ionomer (intact sealant, partially lost, completely lost, either caries-free or carious). The population consisted of primary school children in Manefu, East Baumata Village. The research sample was selected using purposive sampling, targeting primary school children aged 7-10 years at SD Manefu who had deep fissures and were willing to participate. Data collection involved clinical trials, including sealing the left and right lower first permanent molars with Fuji VII glass ionomer and evaluating the sealant retention after six months. Data were processed and analyzed using descriptive statistical tests. The results showed that nine molars had good retention (23.68%), five molars had partially lost their sealant (13.15%), 31.57% of molars were caries-free despite losing their entire sealant, and 31.57% of molars developed caries after losing their entire sealant. Overall, 26 molars (68.42%) treated with fissure sealing were protected from caries. Initial enamel caries lesions occurred in 31.58% of sealed molars whose sealants had dislodged. In conclusion, the use of glass ionomer sealants demonstrated a retention effect and prevented occlusal caries on permanent molars in children by up to 68.42%.
Knowledge about Dental Caries and The DMF-T Index in Adolescents
Authors: Yuniarly Etty , Ayun Quroti , Kumalasari Dewi Erwanti , Purwati Dwi Eni
Published: February 2025

Dental caries is one of the most common diseases found in the oral cavity. Based on the 2018 Basic Health Research, 65.5% of 12-year-old children and 67.4% of 15-year-old children experienced caries or cavities, with a national DMF-T index of 7.1. This study aims to determine the level of knowledge about dental caries and the DMF-T index among adolescents. This analytical study used a cross-sectional approach involving 90 randomly selected seventh-grade students. The results showed that 53.3% of respondents had moderate knowledge about dental caries, with an average knowledge score of 8.21. The average DMF-T index was 3.41, with 51.1% of respondents falling into the moderate category. Analysis indicated a tendency for respondents with better knowledge to have a lower DMF-T index. Additionally, 26.7%  of respondents with moderate knowledge had a moderate DMF-T index, suggesting a positive relationship between the level of knowledge and oral health status. The term "moderate" reflects a sufficient but not optimal understanding of oral health and a middle-level degree of tooth decay. Further research is recommended to use longitudinal designs to analyze causal relationships, explore the influence of social factors such as family support, and develop school-based educational programs to enhance awareness and prevent caries among adolescents.
Hazard Prevention and Emergency Planning on Transboundary Rivers in the UNECE Region
Authors: Winkelmann-Oei Gerhard
Published: February 2025

Hazard prevention and emergency planning in the UNECE region are focused on the following key elements:
Mobile Narratives for Combating Battlefield Stress: Rationale, Preliminary Research and Protocol
Authors: Riva Giuseppe  , Gorini Alessandra  , Grassi Alessandra  , Villani Daniela
Published: February 2025

Battlefield stress is the consequence of man being exposed to the hostile environment of combat. Combat stress is specifically caused by man's fear of the dangers of combat, and is fueled and tempered by other variables such as morale, cohesion, fatigue, confidence, training and intensity of the combat. Treatment is often as simple as giving soldiers time to rest for a few hours or days, to get a shower and some sleep, and to talk about the feelings they have in the presence of a counselor. Only in rare cases do soldiers undergo more serious psychological treatment. One of the best strategies for dealing with stress is learning how to relax. However, relaxing is difficult to achieve in the battlefield. In this paper we suggest the use of mobile multimedia technology–PDA/cellular phones–for providing advanced coping techniques suitable to the battlefield context. Specifically, we developed a protocol based on mobile narratives, to be experienced on mobile multimedia technology: 3G cellular phones, IPODs or PDAs. Mobile narratives are audio-visual experiences, implemented on mobile devices, in which the narrative component is a critical aspect to induce a feeling of presence and engagement. Through the link between the feeling of presence and emotional state, mobile narratives may be used to improve mood state in their users. The rationale of the approach, a preliminary test of the proposed method, and a protocol for its use on the battlefield are presented and discussed.
Integrative Diagnostic Model for PTSD and Suicidality
Authors: Kozarić-Kovačić Dragica  , Gamberger Dragan  , Marinić Igor  , Grubišić-Ilić Mirjana  , Romić Željko
Published: February 2025

Suicide is one of top ten causes of death in most countries, and it has large impact both on families of victims and their environment. Suicide rate in Europe is 17.5 per 100,000 people and various activities from WHO and other organizations are underway with the goal of reducing suicide rates. Different underlying factors can contribute to suicide, and risk factors include both genetic and environmental factors, as well as probable existence of independent inheritance of a predisposition to suicidal behavior. In this paper we review actual epidemiological data on suicide behavior in Europe and Croatia, novel approaches and theories on suicidal behavior, and present our experiences in the diagnostic process. Some predictors of suicidality from our previous studies in PTSD patients are indicated. We reveal an integrative diagnostic model for PTSD and suicidality, based on integration of psychiatric, psychological, and biological markers. Preliminary algorithms for predicting suicidal behavior using data mining methods are shown, and some important variables are indicated. Further studies with larger numbers of patients and more parameters are needed for future development of this multidisciplinary approach to the assessment of suicidal behavior.
Religion, Terror and Suicide Attacks
Authors: Saruhan Müfit Selim
Published: February 2025

In the framework of this lecture the focus is first on the philosophy of what religions teach in regard to the problem of peace in the midst of a world of opposing views. Religions in general, and Islam in particular, have as their aim living together in peace. We should judge religions by their most authentic examples rather than by their worst corruptions. Terror is the result of influences brought to bear on human nature, and cannot be attributed to a religion, just as it cannot be attributed to a nation. Terrorists of all religions may attribute their violence to their beliefs, while in fact they operate for other, human reasons. As this chapter shows, the Qur'an teaches tolerance, and condemns murder and suicide. The central point of this thesis is that, in order to overcome terrorism, we have to put forward a true and accurate understanding of religion. Only in this way can we acquire excellence. The Faculty of Divinity educates its students in the ways of peace. The students in turn carry this message throughout Turkey, which can act as a beacon for other Muslim countries.
Numerical Simulation of Non-Linear Electromagnet Coupled with Circuit to Rise up the Coil Current
Authors: Stepien Slawomir  , Szymanski Grzegorz  , Hameyer Kay
Published: February 2025

In this paper a numerical model and simulation of non-linear field – circuit system dynamics is presented. The system includes electromagnet coupled with two RC circuits. The RC circuit performs a current rise acceleration and improves the electromagnet dynamics. In proposed system a value of capacitance C impact on electromagnet dynamics is numerically determined.
Advance Computer Techniques in Modelling of High-Speed Induction Motor
Authors: Dems Maria  , Komęza Krzysztof
Published: February 2025

In the paper, circuit and field-circuit analyses of high-speed small size inductionmotors are presented. The circuit analysis is possible only for the first harmonic of the supply voltage. For the real shape of the voltage which has many higher harmonics accurate field – circuit analysis is necessary, but this method is very time consuming. The circuit and field-circuit analyses were done for 2-D structure of the motor and for all values of applied frequencies. The results of calculation of magnetizing current are compared with the measurement.
Improving Solution Time in Obtaining 3D Electric Fields Emanated from High Voltage Power Lines
Authors: Lemos Antunes Carlos  , Cecílio José  , Valente Hugo
Published: February 2025

In this paper it is presented an algorithm to reduce the computational time in obtaining the electric field distribution in a plane of analysis due to High Voltage Power Lines. It is used a two dimensional interpolation based on a spline function using as known nodal values, the field solution at nodes of a coarser plan grid.
Influence of the Correlated Location of Cores of TPZ Class Protective Current Transformers on Their Transient State Parameters
Authors: Lesniewska Elzbieta  , Jalmuzny Wieslaw
Published: February 2025

A method of avoidance of mutual influences between secondary windings of multi-core type in a designed protective current transformer is presented in this paper. The analysis was performed for different location of cores with secondary windings. The mutual influence is determined on the basis of 3D field distributions obtained by the numerical field method. Some results of computation were compared with test results.
The Impact of Magnetic Circuit Saturation on Properties of Specially Designed Induction Motor for Polymerization Reactor
Authors: Popenda Andrzej  , Rusek Andrzej
Published: February 2025

The impact of magnetic circuit saturation on properties of specially designed induction motor driving the mixer of polymerization reactor is studied in the paper. The frequency characteristic of Butterworth's low-pass filter was proposed to represent a nonlinear magnetization function in mathematical model of induction machine. Digital simulation of polymerization reactor drive has been made on the basis of presented mathematical model of specially designed induction motor and the examples of transient responses and trajectories are shown.
FEM Computation of Flashover Condition for a Sphere Spark Gap and for a Special Three-Electrode Spark Gap Design
Authors: Gaber Matjaž  , Trlep Mladen
Published: February 2025

Electrical discharges in gases represent a complex problem in high-voltage techniques. The paper presents the findings which have been used to build a model of flashover in gases designed for use in engineering practice. The model is based on the electrostatic FEM calculation and on the value of the flashover electrical field intensity in air. The model has been used to calculate the flashover for a two-electrode sphere spark gap and a special three-electrode spark gap.
Selected Problems of the Flux Pinning in HTc Superconductors
Authors: Sosnowski J.
Published: February 2025

The applications of the HTc superconductors in electricity depends among other on the current capability of the superconducting materials, especially in the form of wires and tapes. In the paper is investigated the influence of the electromagnetic interaction of the vortices with the nano-sized pinning centers on the critical current of HTc superconductors. The capturing interaction is considered taking into account the change in the free energy density arising during the motion of pinned vortex against it's equilibrium position. The influence of the pinning interaction on magnetic induction distribution and flux trapped is considered too for ceramic HTc superconductors.
Electro-Quasistatic High Voltage Field Simulation of Large Scale 3D Insulator Structures Including 2D Models for Conductive Pollution Layers
Authors: Weida Daniel  , Steinmetz Thorsten  , Clemens Markus  , Seifert Jens  , Hinrichsen Volker
Published: February 2025

Simulations of large scale 3D insulator structures covered by conductive pollution layers are presented. These conductive pollution layers on the surfaces are thin with respect to the device dimensions. The 3D geometric modeling of these layers is expensive in time and leads to ill-conditioned linear systems of equations due to large aspect ratios. Alternatively, in this paper they are modeled as 2D surface layers coupled to the 3D geometric model in the electro-quasistatic field simulations. Numerical results for realistic 3D high voltage insulator structures covered by both 3D and 2D pollution layers are presented.
Multi-Frequency Sensitivity Analysis of 3D Models Utilizing Impedance Boundary Condition with Scalar Magnetic Potential
Authors: Gawrylczyk Konstanty Marek  , Putek Piotr
Published: February 2025

In this work the inverse problem solution with iterative Gauss-Newton algorithm and Truncated Singular Value Decomposition (TSVD) is shown. For the goal function a norm l2 was chosen. To solve the inverse problem, which consists of the identification of conductivity distribution in a 3D model, the multi-frequency sensitivity analysis has been applied. The correctness of sensitivity calculation has been proved utilizing three different methods, namely Tellegen's method of adjoint model, differentiation of stiffness and mass matrix, as well as sensitivity approximation by means of difference quotient. Regarding the effectiveness of those methods, the first one is preferred because of shortest computational time.
Very Fast and Easy to Compute Analytical Model of the Magnetic Field in Induction Machines with Distributed Windings
Authors: Pineda Manuel  , Roger Folch Jose  , Perez Juan  , Puche Ruben
Published: February 2025

Torque and e.m.f. of an induction motor can be derived from the air-gap flux density. The paper shows a new method for computing the flux density distribution of constant air-gap width machines, neglecting magnetic saturation, by making use of very efficient techniques widely used in the field of discrete signals processing: the Fast Fourier Transform (FFT) and the Discrete Circular Convolution. The mutual inductances between the phases of the machine are obtained with a single, very simple formula, in terms of the machine's windings distribution and the geometric dimensions, which is solved with the FFT. As the method can handle arbitrary winding conductor distributions, it is highly suitable to the analysis of the magnetic field and electromagnetic torque in machines with stator or rotor faults, such as inter-turn short circuits or broken bars.
Study of Electromagnetic Field Properties in the Neighbourhood of the Metallic Corners
Authors: Apanasewicz Stanisław  , Pawłowski Stanisław
Published: February 2025

Study of electromagnetic field in the neighbourhood of the metallic corners is an aim of the present paper. Concave and convex corners are considered.
Consideration of Coupling Between Electromagnetic and Thermal Fields in Electrodynamic Computation of Heavy-Current Electric Equipment
Authors: Bednarek Karol
Published: February 2025

The paper presents a model of electrodynamic computation (current density, power loss, temperatures) of three-phase heavy current busways with the use of integral equation method. The computation makes allowance of coupling between the electromagnetic and thermal fields. Results of calculation are shown and compared with the measurement trials performed with physical objects.
Toward the Reconstruction of Stress Corrosion Cracks Using Benchmark Eddy Currents Signals
Authors: Morozov Maxim  , Rubinacci Guglielmo  , Tamburrino Antonello  , Ventre Salvatore  , Villone Fabio
Published: February 2025

This paper concerns numerical modelling of stress corrosion cracks in Inconel600 plates using experimental data of benchmark eddy current measurements. The problem is considered from a broad perspective, in view of its integration with algorithms for solving the inverse problem. The accuracy and efficiency have been particularly considered. The computational technique applied for modeling the crack is based on an integral formulation of the eddy current problem. The cracks are treated as either penetrable volumetric or zero-thickness (surface) defects enabling some electric current flowing through them. Real stress corrosion crack have been considered in this study where measured and simulated eddy current signals due to the cracks are presented.
Design of a System for the Long Defects Detection with Advanced Methods for Eddy-currents Analysis
Authors: Cardelli E.  , Faba A.  , Formisano A.  , Martone R.  , Morabito F.C.  , Papais M.  , Specogna R.  , Tamburrino A.  , Trevisan F.  , Ventre S.  , Versaci M.
Published: February 2025

The aim of the paper is to highlight some of the innovative methodologies, techniques and systems for non-destructive electromagnetic testing, which have been developed in the framework of the AMDE project (Applications of Methods of Diagnostics Electromagnetic) partially funded by the Italian Ministry of University and Research.
Observation of Stress Loaded Ferromagnetic Samples Using Remanent Flux Leakage Method
Authors: Chady Tomasz  , Psuj Grzegorz  , Sikora Ryszard
Published: February 2025

In this paper the results of remanent flux leakage inspections of the stress loaded ferromagnetic samples are presented. Two different magnetizing methods and several configurations of the transducers' measuring unit are used in order to compare and chose the optimal one and to enhance the performance of the whole system. Absolute and differential GMR sensors are used as the pick-up elements. All measurements were done using specimens made of a low carbon steel SS400, tensile deformed in the longitudinal direction.
Evaluation of Complex Multifrequency Eddy Current Transducer Designed For Precise Flaw Depth Measurements
Authors: Chady Tomasz  , Baniukiewicz Piotr  , Sikora Ryszard  , Psuj Grzegorz
Published: February 2025

In this paper the authors propose an eddy current transducer dedicated to the precise flaw depth measurements. The transducer consists of two probes with C-shaped ferrite cores. The frequencies of the excitation currents differ for both probes. A flux generated by the big probe penetrates the material deeper than a flux from the small probe. Therefore, the bigger probe is sensitive to deep defects while the small probe is affected more by surface defects in the material. The results of measurements are presented.
British Nuclear Strategy
Authors: Stocker Jeremy
Published: February 2025

In 2007 the British Government announced that the UK strategic nuclear deterrent is to be maintained until the 2050s, by which time Britain will have been a nuclear weapons state for almost a century. During the Cold War Britain need to deter the Soviet Union, but the UK's relationship with the United States was at least as important in determining the country's nuclear stance. Today the Soviet threat has been replaced by a less threatening but more uncertain strategic environment. Nuclear ties with the US remain as important as ever, and enable the UK to remain a nuclear power at modest cost.
Modelling and Analysing Systems of Agents by Agent-aware Transition Systems
Authors: Bednarczyk Marek  , Bernardinello Luca  , Pawłowski Wiesław  , Pomello Lucia
Published: February 2025

We propose a method to specify, in a modular way, complex systems formed by interacting agents. The method is based on the notion of view, that is a partial representation of the system, reflecting one of its specific aspects. By composing the different views, we get the overall system, described as a special kind of transition system. By means of a suitable logical language, we can express interesting properties of the system; model-checking techniques can then be used to assess their validity. Views can be specified using different languages or notations, provided they can be translated in so-called agent aware transition systems. The method is explained with the help of a simple, but non trivial example.
Emergent patterns in online coactivity
Authors: Wilkinson Dennis M.
Published: February 2025

The Internet has enabled people to coactively create, share, rate and classify content on an unprecedented scale. Examples of coactive systems include open source software development, wiki communities, social news aggregators, and many others. This paper discusses regularities in online coactive systems of thousands or millions of participants. First, user participation levels are shown to follow a heavy-tail power-law distribution over their entire range, so that a small number very active users make the vast majority of contributions. The power law arises from a simple rule where the probability a person stops contributing varies inversely with the number of contributions. The power law exponent is moreover demonstrated to discriminate between systems according to the effort required to contribute. Next, the level of activity per topic is shown to follow a heavy-tailed distribution, this time lognormal, generated by a simple stochastic popularity reinforcement mechanism. The vast majority of activity thus occurs among a small number of very popular topics. The trends are demonstrated to hold for four large independent online communities with different scopes and purposes.