bluuebunny/crossref_metadata_2025 huggingface dataset:
Integration of Geogebra Software Into Mathematics Instruction
Authors: Salami Olajumoke Olayemi , Spangenberg Erica Dorethea
Published: July 2024

The study focused on how learners' performance and attitudes in mathematics were affected by the GeoGebra software. Among the most significant obstacles facing the teaching and learning of mathematics has been the need for instructional tools, particularly those incorporating information and communication technology (ICT). The design of the study was quasi-experimental with a sample size of 80 respondents selected from the population of the study with the use of a purposive sampling technique. The selection of the schools was based on the availability of working computer systems. Using basic random sampling, two intact classes were divided into experimental and control groups. The findings of the Student Achievement Test in Mathematics, SATM, indicated that pupils who had been taught GeoGebra performed significantly better at the post-test level than the pre-test level (t = 2.14; p > 0.05). The results of the Mathematics Attitudinal Scale (MAS) also demonstrated that students' attitudes toward mathematics were highly correlated with their proficiency with GeoGebra (t =2.11; p > 0.05). The investigation concluded that there are insufficient teaching materials available for mathematics training. Thus, integrating GeoGebra software into the teaching of mathematics significantly improves secondary school students' performance in mathematics.
Investigating the Pedagogic Competence of Pre-Service High School Teachers in Terms of Learning Planning Abilities
Authors: Rakhman Fathor , Rosmiati  , Satriawan Muhammad
Published: July 2024

One factor that determines teachers' success in teaching is the teacher's ability to plan lessons. Careful and good lesson planning can help create an effective learning environment, maximize students' potential, and increase their learning success. It also assists teachers in teaching in a more structured and directed manner, positively impacting student learning outcomes. Therefore, the purpose of this study was to investigate the ability of pre-service high school teachers to plan lessons based on the Merdeka Curriculum. This research is a descriptive study with 37 pre-service high school teachers as subjects. Data were collected using angles, portfolios, and interview sheets which were then analyzed using quantitative and qualitative approaches. Based on the results of data analysis, it was found that the pedagogic competence of pre-service high school teachers in terms of the ability to plan lessons according to the Merdeka Curriculum was 23% at a low level, 47% at a medium level, and 30% at a high level. Therefore, pre-service high school teacher's ability to plan to learn needs to be improved, especially in learning design scenarios and assessments. The results of this research contribute as input to related parties, in this case, the Institute of teacher education and Training Institutes, in developing teacher education and training programs that are relevant and adaptive to current educational developments.
A Group Counselling Using the Reframing Technique to Improve Academic Self-Awareness of High School Students
Authors: Habsy Bakhrudin All , Pratiwi Titin Indah , Wulandari Tri Desi
Published: July 2024

Academic self-awareness in learning is the awareness of students at schools to adjust, understand and control themselves according to the rules that apply at schools. Not only learning and increasing knowledge, but students must also be able to control themselves well according to expectations and purpose. This type of research is Quasi-Experimental Design research with a Pre-test Post-test Control Group Design research model. The population in this study was class XI Senior High School. The research sample consisted of 10 people divided into an experimental group and a control group of 5, each. Data was collected through an academic self-awareness questionnaire developed by researchers with 49 items based on aspects of emotional awareness, accurate self-assessment, and self-confidence. This study aims to measure the effect of the treatment given on the dependent variable (bound). Data processing and data analysis techniques are using Statistical Product and Service Solution (SPSS) version 21. Based on the results of statistical data analysis of the paired sample t-test, asymp. Sig (2-tailed) of 0.002 result was obtained. Because the value of asymp. Sig (2-tailed) is less than 0.05, then H1 is accepted, and Ho is rejected, therefore, a group counselling is an effective reframing technique to increase academic self-awareness of students.
Development of Web-Based Indonesian Teaching Materials on Listening Materials for Grade X High School Level
Authors: Nurhuda Pradicta , Kaniah  , Wahyuni Dwi , Harini
Published: July 2024

In learning Indonesian language, the existence of innovative teaching materials in line with technological developments is one of the right efforts in improving student learning outcomes. Listening material is one of the achievements per element that students must learn in learning Indonesian high school grade X according to the Merdeka Curriculum. This research focuses on the development of teaching materials and knowing the feasibility of web-based teaching materials on listening materials. The purpose of this research is to find out the analysis of teaching material needs, the development of teaching materials, and the feasibility test of web-based teaching materials on listening materials. This research uses the development method or Research and Development (R&D) with the ADDIE model approach. Data collection is carried out by observation, interviews, filling out questionnaires. The needs analysis sample was conducted on 2 Indonesian language teachers and 20 grade X students at SMAN 4 Bekasi City, SMAN 12 Bekasi City, and SMA Strada Bekasi City. Meanwhile, product trial samples were carried out on 2 Indonesian teachers and 36 grade X students at SMAN 12 Bekasi City. The results of the needs analysis are (1) teachers and students need teaching materials on listening materials that can display audio or audio visual that can be accessed through devices anywhere and anytime; (2) web-based teaching materials are developed through three steps, namely from starting to create designs, registering domains, to developing teaching materials using WordPress media; and (3) The results of the teaching material validation test by linguists were declared very feasible with a percentage of 88%, material expert validation was declared very feasible with a percentage of 92%, and media expert validation was declared feasible with a percentage of 80%, while the results of teaching material trials by teachers were declared feasible with a percentage of 80% and teaching material trials by students were declared very feasible with a percentage of 82%. The conclusion of the research is web-based teaching materials Indonesian listening materials that can be accessed through https://bahanajarkelas10.site/ link suitable for use by teachers and grade X high school students.
Effectiveness of Learning Management System and Peer Assessment Method in Parasitology Learning at Padjadjaran University, Faculty of Medicine
Authors: Berbudi Afiat , Rabbani Faqih Achmad , Wahyudi Kurnia
Published: July 2024

The early 2020 COVID-19 pandemic disrupted community activities, including education. Online education and various teaching methods have been implemented by the Indonesian government to reduce classroom learning. This study investigates the impact of asynchronous learning and peer assessment in the parasitology course via the Learning Management System (LMS). This quantitative study evaluated the effectiveness of Learning Management System to facilitate asynchronous learning and peer assessment in the fifth-semester parasitology course. All 247 course students were the study's target group. The data was acquired using a structured questionnaire. A quantitative analysis was done utilizing Sugiyono's efficacy formula. To draw relevant conclusions, qualitative questionnaire data was recorded and rigorously analyzed. The survey indicated that 37% of respondents thought LMS was beneficial for Parasitology E-learning and 39% said it improved course understanding. In the GIS system, 91% of participants said peer assessment helped them comprehend parasitology topics. This study demonstrates that the LMS can effectively and efficiently facilitate peer assessment to address the challenges in providing feedback to students in order to improve learning outcomes.
Providing Ubuntuism Through Participatory Culture Framework: Sustainable Development Goals 4 and 5
Authors: Randle Oluwarotimi
Published: July 2024

South Africa is a country of diverse sets of individuals who have different backgrounds and beliefs, there has been a global discussion for the promotion of sustainable development goals, and this paper proposes an approach for the implementation of sustainable development goals 4 and 5 within the South African landscape. (1) The purpose of the research is to discuss the utilization of the African Ubuntu Philosophy through the participatory culture framework for promoting inclusive education. (2) This research was conducted utilizing the 11 components of the Participatory culture framework to practically implement the African Ubuntu Philosophy through the themes defined by Adewale (2023) which included inclusive education, gender sensitization programs, peer support, and mentorship, life orientation curriculum, conflict resolution and restorative justice, student leadership and participation, parent, and community involvement. The utilization of the African Ubuntu Philosophy within a South African University was successful and showed that the approach promoted teamwork and collaboration among the students, it further ensured the provision of leadership roles during classroom activities. The application of the participatory culture framework contributed to the promotion of Sustainable Development Goals 4 and 5 within the classroom environment.
Understanding the Meaning and Importance of Philosophy of Education for Performing Arts Education Students: A Case Study
Authors: Simamora Roy Martin , Sarjiwo  , Faliq Syafiq
Published: July 2024

This case study explores the meaning and importance of the philosophy of education for students studying in the performing arts education department. By examining the beliefs, values, and educational philosophies of performing arts students, this study aims to uncover the profound impact of philosophy on their educational experiences and future artistic endeavors. This study utilized a case study approach. Questionnaires were administered to performing arts education students. The questionnaire consisted of eight questions that were carefully structured to uncover the students' views, beliefs, and experiences relating to the philosophy of education. Data collection was conducted online through Google Forms. Google Forms were then distributed to 35 participants in early May 2023. After the deadline for form completion at the end of May 2023, responses from the participants were automatically collected by Google Forms. The responses were then aggregated and an in-depth analysis was conducted to look at themes, patterns, and relationships prevalent in the responses. The results of this study highlight the role of diverse educational philosophies in shaping learning experiences, influencing academic achievement, and impacting educational policy and practice. This study enriches the dialogue on performing arts education, providing valuable insights for educators and policymakers. By elevating the discussion from visible aspects to the underlying philosophical structure, it offers an innovative approach for a more holistic educational experience for performing arts students.
Nonformal Education and Merdeka Curriculum Policy: The Leaders’ Perspective
Authors: Latief Suryawahyuni , Samsuddin  , Subhan Ahmad
Published: July 2024

This study investigates the perspective of non-formal education leaders in Jambi province, Indonesia on the implementation of Merdeka curriculum policies in non-formal education providing equal education service managed by the community. Six leaders were selected using purposive sampling and data was collected through open-ended telephone interviews and one-on-one meetings. The findings revealed that the leaders had interesting experiences implementing the new curriculum, with a focus on providing non-formal education units. However, there were challenges in translating the curriculum structures into the operational curriculum of educational units, especially for students who are not of school age. The leaders suggested socialization, assistance, and training actively pour the curriculum into the operational curriculum. They also recommended support from the government in the form of material and non-material support. Further research is needed to evaluate the effectiveness of the policies and strategies used by non-formal education units in the implementation of the new curriculum, including those managed by the government and community, and to compare the implementation in non-formal and formal education units.
Analysis of Information Literacy Skills in Student Essay Writing Using Mind Mapping
Authors: Regina Frilia Shantika , Damaianti Vismaia S , Mulyati Yeti , Sastromiharjo Andoyo
Published: July 2024

Information literacy is an ability that accommodates 21st-century skills. The aim of this research is to determine students' literacy skills in essays prepared with the help of mind mapping. This type of research is descriptive quantitative with the population namely students for the 2020/2021 academic year who have contracted the Criticism and Essay courses. This research analyzes student essays with assessment indicators containing aspects of information literacy based on the Association of College and Research Libraries (ACRL) with adjustments. The results showed that 41.17% were not yet competent, 47.05% were quite competent, and 11.78% were competent. Based on the research results, show that students' literacy skills expressed in essay form are still low. This was concluded because students were less proficient in developing a thesis, unable to modify information in their own words, and did not have written sources to support the statement. Apart from that, abilities at the phonological, morphological, and syntactic levels still need strengthening. Mind maps in essay writing can be combined with learning media to improve information literacy skills that can be described in essays.
The Role of Classroom Management in Enhancing Learners’ Academic Performance: Teachers’ Experiences
Authors: Ahmed Nadeem , Pierre Du Plessis
Published: July 2024

Learners’ academic performance is one of the most imperative elements of the classroom and a core responsibility of teachers as well as schools. Thus, it is imperative to manage a classroom in a way that is conducive to teaching and learning that can promote high academic performance. Consequently, the study aimed to examine the role of classroom management in enhancing learners' academic performance. A generic qualitative research method approach was employed in the study. A purposive sampling technique was used to select a total of 18 teachers from six government secondary schools to study the phenomenon. Therefore, it was found that effective classroom management plays an important role in learners' performance. During the research, it was found that the no availability of physical resources and poor classroom management contribute to learners, performance. Based on the research findings it was identified that teacher effectiveness, teacher preparedness and teacher social and emotional proficiency, teacher-learner relationship, and learners' motivation, behavior, and discipline are the major factors that also have a strong role on learners' performance. The schools selected to conduct research are lacking resources, and teachers are not as effective and skilled as required. Due to the lack of resources and skills, teachers can't manage classrooms which can enhance learners' academic performance. It is thus mandatory to provide resources to schools and skills and training to teachers.
Online or Face-to-Face: A Data-Analytics Approach to Understanding First-Year Students' Learning Preferences and Academic Achievements
Authors: Mosia Moeketsi
Published: July 2024

This research explored the predictive power of individual and contextual factors on first-year students' preferences for online versus face-to-face learning environments, examined through a Bayesian framework for analyzing compositional data. Purposefully, it delves into how students' academic performance and geographic location influence their educational modality choices in a post-pandemic context. As quantitative research, the paper employs Bayesian statistical methods, the research analyzed student preferences across varied South African provinces, juxtaposing these with academic performance to uncover patterns and predictors of learning modality preferences. The student learning modalities preferences were collected through questionnaire as a compositional data. The findings revealed a significant correlation analysis which is, that students with higher academic performance and those residing in remote areas show a preference for face-to-face learning modality, challenging the notion that online learning preferences are primarily driven by academic outcomes alone. Adding a novel dimension, this investigation enriches the current understanding of educational preferences by applying a Bayesian approach, revealing that predictive analyses must account for a blend of personal and situational factors. This insight is pivotal for formulating educational policies that are both inclusive and responsive to the diverse needs of the student populace in a dynamically evolving educational terrain.
Research Trends on Ethnoscience in Physics Learning (EPL): A Bibliometric Network Analysis
Authors: Sunarti Titin , Suprapto Nadi , Suliyanah  , Satriawan Muhammad , Hidaayatullaah Hasan Nuurul
Published: July 2024

In this modern era of education, understanding EPL research trends plays an important role in the development of innovative physics education. The general aim of this research is to comprehensively explore the landscape of Ethnoscience in Physics Learning (EPL). This study used bibliometric analysis to evaluate publications. Data was collected from Scopus and analyzed using VOSviewer and Biblioshiny-Bibliometrix software. The publication trend of EPL research varies annually, with significant growth since 2000 and the highest peak in 2021. Articles are the dominant document type in EPL research, with the average total citations per article varying significantly from year to year. Journal of Physics: Conference Series is the top source for EPL research. The main affiliations and countries contributing significantly are Semarang State University and Indonesia, while physics and astronomy dominate as the main subjects. The authors who contributed and had the most citations in EPL-related research were Beggs J. M. & Plenz D. The keywords that dominated and became a new trend were Physics, Cell Culture, Article, Human, and Student. The novelty of this study lies in its bibliometric approach and network analysis that provides deep insights into research trends and relationships within the field of ethnoscience in physics learning, contributing to a better understanding of the development of physics education.
Costos y rentabilidad en la producción de banano orito en una finca bananera del cantón La Maná
Authors: Alarcon Velez Steven Josue , Cunuhay Vega Betsabe Lisbeth , Oña Sinchiguano Brenda Elizabeth , Torres Briones Rosa Marjorie
Published: July 2024

En la provincia Cotopaxi específicamente en el cantón La Maná, la producción del banano orito es una importante actividad economía, proporcionando aportes a la economía local, por lo tanto, la presente investigación tuvo como principal objetivo determinar los costos de producción del cultivo banano orito (musa acuminata) y su rentabilidad en la Finca Cesar Augusto. La metodología utilizada fue el método de campo debido que se realizó una visita al lugar de producción con la finalidad de recopilar información confiable y actual, por consiguiente se utilizó el método bibliográfico siendo una parte esencial de la investigación, puesto que mediante este método se respaldó las afirmaciones con evidencia sólida proveniente de fuentes confiables y por último se utilizó el método descriptivo con el que se analizó las situación actual del objeto de investigación, dichos métodos fueron utilizados con un enfoque inductivo y deductivo, empleándose técnicas como, la observación, la entrevista y la encuestas. Las principales herramientas aplicadas para la recolección de datos fue la ficha de observación y el cuestionario. Los resultados de la producción de banano orito obtenidos reflejaron los principales rubros de los costos producción como son Mano de obra directa, Materiales directos, Materiales y Otros costos indirectos de fabricación, el valor de costo por caja es de $1,51 dólares y por hectárea tienen un valor de $111,47 con una utilidad por caja de 37,24%, también se realizó los estados de resultados, el estado de situación financiera del 2023 e indicadores de rentabilidad.
IMPLEMENTASI PENDIDIKAN KARAKTER EMPATI DALAM PEMBELAJARAN PAI DI SMPN 5 SINJAI
Authors: Nurqadriani  , Suriyati  , Jamaluddin  , Nur Makmur Jaya , Wafda
Published: July 2024

Humans are inseparable creatures. Empathy is the ability to feel and understand the feelings, thoughts and experiences of other people. It involves the ability to put oneself in another person's shoes and see the world from their perspective. The aim of this research is to find out how the implementation of character education strengthens character education in schools, the factors that support and hinder character education in schools, the role of teachers in character education in schools, and the implementation of empathetic character education outside the classroom. Data collection techniques are interviews and observation. The analysis is qualitative descriptive. The results of the study show that learning Islamic Religious Education at school can improve student behavior in the educational environment. The ability to empathize is built through learning experiences, education and socialization. Educators can plan teaching and learning activities that encourage empathetic behavior in students. Role playing, discussions, helping each other, group work and questions and answers are examples of learning activities that are considered important for fostering empathetic behavior
Keywords:  Character; Empathy; Pie Learning.
NILAI-NILAI PENDIDIKAN ISLAM DALAM PEMIKIRAN FILSAFAT MOHAMMAD IQBAL
Authors: Suripto
Published: July 2024

Muhammad Iqbal is a modern Muslim philosopher-poet who, conceptually and philosophically, does not have a detailed formulation of Islamic educational concepts. However, implicitly, based on his fundamental views on humanity, particularly his philosophical thoughts on the ego, a dynamic, innovative, and vitalistic concept of Islamic educational thought can be reconstructed.
The genealogy of Islamic educational values in Iqbal's philosophical thought is rooted in his ideas about humanity, especially his perspective on the story of Adam, the concept of ego, and the perfect human (insan kamil). Based on this, fundamental issues in humanities studies related to education can be identified: innate potential, freedom, and the essence of humanity. The construction of Islamic educational values in Muhammad Iqbal's philosophical thought includes: values of monotheistic education, values of moral education, values of rational education (intelligence), and values of social education. All of these educational values also originate from Iqbal's view of the liberated ego, constantly progressing towards perfection, which is Allah SWT.
Keywords:  Values; Islamic Education; Philosophical Thought; Iqbal.
PENERAPAN METODE APPLIED BEHAVIOUR ANALYSIS (ABA) UNTUK ANAK AUTISME PADA PEMBELAJARAN AL-QUR'AN DI SEKOLAH DASAR ISLAM TERPADU PERMATA KOTA PROBOLINGGO
Authors: Yunusiyah Rahmah El , Muhammad Devy Habibi
Published: July 2024

The Applied Behavior Analysis (ABA) method is employed to modify children's behavior, particularly those with autism, emphasizing positive reinforcement and firmness without resorting to violence. At SDIT Permata, the ABA method is applied in the Al-Qur'an learning process with the aim of assisting autistic children in understanding the Arabic alphabet and memorizing the Quran. This approach involves direct learning, creating specific situations, and conducting instructional activities. The Amanah Foundation, founded by Mr. Ir. Agung Sasongko, supports inclusive education as an expression of compassion for children with special needs. This research aims to explore the implementation of the ABA method in Quranic learning for autistic children at SDIT Permata and identify supporting and inhibiting factors. The research methodology employed in this study is descriptive qualitative field research. The results indicate that the implementation of the ABA method involves direct approaches, specifically designed situations, and instructional activities. Teachers provide consistent instructions, utilize positive reinforcement, and offer guidance based on individual needs. Supporting factors include teacher involvement, praise, and learning through planned situations, while inhibiting factors involve tantrums, difficulties in interaction, and unstable emotional conditions in children. This research is expected to contribute positively to the development of inclusive education in Indonesia.
Keywords:  ABA Method; Quranic Learning; Autistic Children.
PEMBENTUKAN KARAKTER RELIGIUS MELALUI PEMBIASAAN NILAI ASMAUL HUSNA DI MI NUR AZIZ PROBOLINGGO
Authors: Saudah Siti , Hidayah Ulil
Published: July 2024

This research describes the habituation of Asmaul Husna values ​​carried out at MI Nur Aziz Probolinggo to build students' religious character through the implementation of Asmaul Husna values. This research uses a qualitative approach methodology with the research object being MI Nur Aziz Probolinggo students. Data collection techniques use interview, observation and documentation methods. The Asmaul Husna text in this study uses a sample of Asmaul Husna which is applied by teachers to students by practicing the values ​​of daily reading. The research results show that students' religious character is through internalizing the values ​​of Asmaul Husna, namely Ar-Rahman so that students can develop a sense of love, Ar-Rahim so that students can develop a sense of compassion, Al-Malik with leadership and discipline behavior at school, Al-Hamiid carry out commendable behavior at school, Al-Adl behaves fairly towards others, Al-Latiif behaves gently towards others, Al-Halim behaves with good manners, Al-Jami' behaves responsibly towards the tasks given, Al-Afuw forgives each other among others, As-Shabuur behaved patiently in all the trials he faced
Keywords:  Asmaul Husna; Religious Character; Value Habituation.
KONSEP TIJAROH SEBAGAI SOLUSI FENOMENA PERDAGANGAN DENGAN SISTEM TEBAS TERHADAP KOMODITAS PADI DAN MANGGA DI KABUPATEN NGAWI
Authors: Hanafi Yusron
Published: July 2024

The total area of Ngawi Regency is 1,298.58 km2, of which 506.6 km2 or about 40% is made up of rice fields. According to the data, farmers employ the bulk of Ngawi people. Mango fruit is the second most abundant good after rice, as most Ngawi people grow mango trees in front or behind their homes. When harvest season rolls around, farmers have trouble finding buyers who will purchase their crops in an honest and profitable manner. This is because buyers, also known as penebas, use the Tebas system to complete the purchase process for these two commodities, which means that the system cannot fulfill the wishes of both parties involved in the transaction if It also goes by the name "profit" in economics.According to the Tijaroh principle, the goal of a trading contract is to find and make money when all requirements have been met. Ijarah, Salam, Murabahah, Istishna', Musyarakah, Muzara'ah, and Mukharabah, musaqah are among the contracts that fall under this category. Or, according to a different editorial, any kind of arrangement involving for-profit transactions is referred to as a tijarah contract (compensational contract).The goal of this research is to stop Maysir and Gharar practices in the trade of rice and mango commodities in the Ngawi district and to make rice trading activities ethical and advantageous for all stakeholders.Issue. The present study employed the Inductive analysis method in a Normative approach to examine the data. This entails evaluating the research object's problems beforehand and utilizing the Tijaroh concept to analyze the data.
Keywords: Tebas, Trade, and Tijaroh
IMPLEMENTASI PROGRAM TAKHOSSUS LPBA DI PONDOK PESANTREN RAUDLATUL MALIKIYAH
Authors: Agustin Sylvia , Agustin Maulid
Published: July 2024

The implementation of the Takhossus LPBA program at the Raudlatul Malikiyah Islamic Boarding School involves developing the Arabic language, teaching Arabic grammar rules, and implementing routine language activities. This program develops students' Arabic language skills, such as speaking, debating, hosting and delivering speeches. In addition, this research explains the history and teaching system of the program, and highlights the importance of nahwu and sharaf in learning Arabic to understand the structure and use of the language. The research methodology used is work analysis using primary and secondary data sources. The LPBA program in Islamic boarding schools is implemented through BANOM dirofiyah activities, which include routine Arabic language rules and sanctions for violators. This research aims to explore the implementation of the LPBA program in Islamic boarding schools using qualitative research methods. LPBA as a foreign language development institution encourages its members to speak Arabic every day to improve their language skills. Apart from that, Islamic boarding schools also implement the Takhassus LPBA program to deepen their knowledge of the Arabic language. Although the program faces challenges such as lack of student motivation resources, limited number of teachers, limited expertise, limited textbooks, teaching materials and multimedia resources, strategic steps have been taken to overcome these problems. Program evaluations are carried out periodically to ensure the effectiveness of activities.
Keywords:  Takhossus; Arabic; Banom.
REPAIR OF UNDERGROUND STRUCTURES
Authors: Popovic Predrag L.
Published: July 2024

Underground structures are often exposed to soil and water pressures, various aggressive chemicals, temperature variations, and the impact and vibrations of the equipment used. These often result in chemical attack on concrete, corrosion of steel reinforcing and loss of load-carrying capacity of the steel framing. To properly evaluate and repair underground structures, one has to apply a combination of geotechnical engineering, knowledge of materials and of structural engineering. Underground work requires special safety measures and training of workers and engineers. In addition to potential for dangerous gases and vertical fall hazards, the spaces to work in are very restricted. This paper present investigations and methods for repairs for typical mine shafts, tunnels and underpinning of building and bridge foundations. Types of deterioration are described, and various methods of repairs are presented.
STRUCTURAL FAILURES IN TIMBER STRUCTURES: ANALYSIS OF TYPICAL FAILURE MODES AND THEIR POSSIBLE CAUSES
Authors:   University of Belgrade, Faculty of Civil Engineering, Serbia, Glišović Ivan
Published: July 2024

Damages or failures in timber structures have created a negative image for timber as a building material. This can raise speculations and doubts about the safety level of existing timber structures. The objective of this paper is to identify typical failure modes and their causes. Experiences from previous failure investigations are summarised. Bending failures and tension perpendicular to the grain failures are common failure modes for beams. The main type of damage affecting the integrity of cross-sections is cracking along the grain. Causes for such damages are related to overloading, frequently changing wood moisture content and tensile stresses perpendicular to the grain resulting from geometry of structural elements. In the case of failure of trusses, frames and arches dominant failure mode is instability caused by insufficient bracing. The majority of failures can be linked to design and construction errors. Manufacturing errors (wood quality, production principles and methods) only cause a small number of the failures. In order to minimise or avoid errors and thereby occurrence of failures, different recommendations are given.
ASSESSMENT, REHABILITATION AND RECONSTRUCTION OF RELIGIOUS BUILDINGS IN VOJVODINA ‐ EXAMPLES FROM PRACTICE
Authors:   University of Novi Sad, Faculty of Technical Sciences, Serbia, Lukić Ivan , Malešev Mirjana ,   Institute for testing, assessment, and repair of structures LTD Novi Sad, Serbia, Radonjanin Vlastimir ,   Institute for testing, assessment, and repair of structures LTD Novi Sad, Serbia, Šupić Slobodan ,   University of Novi Sad, Faculty of Technical Sciences, Serbia, Pantić Vladan ,   University of Novi Sad, Faculty of Technical Sciences, Serbia, Lukić Luka
Published: July 2024

Recognizing the importance of preserving architectural marvels, scholars, engineers, and conservationists have devoted considerable efforts to establish methodologies for the assessment and repair of historical structures. Through two case studies, one Orthodox and one Catholic temple, this paper presents a synthesis of historical insights, technical expertise, and practical considerations, pointing full complexities involved in preserving these sacred spaces. The analysis of the two historically significant churches, both designated as cultural heritage sites, reveals a set of common structural damages that can be mainly attributed to the specifics of the chosen architectural-constructive system.
DEVELOPMENT OF NATIONAL SEISMIC RISK ASSESSMENT FOR MONTENEGRO: BUILDING EXPOSURE MODELLING
Authors:   University of Montenegro, Faculty of Civil Engineering, Pejović Jelena , Serdar Nina ,   University of Montenegro, Faculty of Civil Engineering
Published: July 2024

Seismic risk assessment has been a critical issue in Montenegro since the devastating 1979 earthquake, which initiated the first seismic risk studies to develop a spatial plan for the country. Following the earthquake, significant efforts were made to reduce seismic risks and enforce regulations for constructing earthquake-resistant buildings. These first vulnerability studies were based on damage observations from the 1979 event. However, due to rapid urbanization and increased building construction, particularly in coastal areas with high seismic hazard levels, Montenegro’s seismic risk has substantially increased over time. Unfortunately, Montenegro’s seismic risk assessment was not updated until 2021. At that time, extensive research was undertaken as part of a European Commission-funded project to develop a National Risk Assessment (NRA). This comprehensive study followed EU guidelines to ensure that prevention, preparedness, and planning measures were consistent and comparable with those of EU member states. The development of the NRA faced many obstacles, primarily due to a lack of sufficient data, particularly in the building exposure model. In this paper, the methodology used for the seismic risk assessment is presented, focusing on the main uncertainties associated with the used SERA building exposure data. It also introduces a refined SERA exposure model tailored for building typologies in northern Montenegro and outlines ongoing and future research efforts aimed at continuously improving the exposure model.
ASSESSMENT OF SEWAGE CONDITIONS WITHIN TEKO A POWER PLANT AND PROPOSAL FOR OPTIMAL MAINTENANCE AND REHABILITATION
Authors:   Jaroslav Černi Water Institute, Belgrade,  Serbia, Milojković Ivan
Published: July 2024

The subject, scope and method of the conducted investigative works to define the positions and conditions of the underground installations for the evacuation of waste water within TEKO A are presented. The legal framework for the conducted investigative works, types of works and technical conditions are also listed. Within the TEKO A power plant, there is partly a sewage separation system, which consists of: - General internal sewerage (atmospheric, sanitary and part of technological wastewater); - Channels for return cooling water; - Oily sewage in the area of the oil station and refinery.
ENVIRONMENTAL ASPECTS OF GREEN BUILDING IN URBAN SPACE
Authors:   Djerdap usluge ad: Kladovo, Serbia, Mitrović Ivana
Published: July 2024

Green construction is the building industry's response to the challenges of climate change. It involves respecting the profession and applying technical-technological knowledge throughout the entire process of designing and building buildings, starting from urban planning, through design, construction methods, and application of quality materials and equipment, to proper maintenance of buildings. The main objective of green construction is to optimize the use of natural resources, increase the comfort and quality of the space, and reduce the harmful effects on the environment. The concept of green building is represented in all three categories: natural environment, socio-social, and economic, as the lifestyle must be sustainable for future generations. Sustainability means being more efficient with the energy, materials, and space we have left, not making everything last as long as possible. This is important because we need to prevent scarcity from threatening us and the environment from being affected by the by-products of our activities
ABOUT THE CONCRETE BRIDGES OF THE GREAT BULGARIAN ENGINEER LALO RAYKOV (1923-1997)
Authors:   University of Structural Engineering and Architecture“L. Karavelov”, Sofia, Bulgaria, Kazakov Konstantin , Partov Doncho ,   University of Structural Engineering and Architecture“L. Karavelov”, Sofia, Bulgaria, Spiridonova Irena ,   University of Structural Engineering and Architecture“L. Karavelov”, Sofia, Bulgaria, Dinev Dobromir ,   University of Architecture, Civil Engineering and Geodesy, Sofia, Bulgaria
Published: July 2024

The authors present a short biography of the life and the achievements of the great Bulgarian bridge engineer L. Raykov in the field of the Concrete bridge design, in the occasions of 100 years from his born. The paper briefly describes the most interesting examples of deck-stiffened arch bridges designed by L. Raykov which are considered as a pioneering application of this type of structure in Bulgaria. Today these bridges after more than 60 years exploitation, still attract our interest not only with the dimensions of the structure but also with the technology used for their manufacturing and assembling of the bridge components.
Tinjauan Yuridis Daftar Positif Investasi Minuman Beralkohol Berdasarkan Peraturan Presiden (Perpres) Nomor 49 Tahun 2021
Authors: Fatchurochim Auwalu , Panjaitan Hulman , Sri Widiarty Wiwik
Published: July 2024

Dalam Ketentuan Perpres Nomor 10 Tahun 2021 masih membatasi sektor usaha tertutup, ialah sektor usaha terkait investai miras yang dilarang, namun dalam Perpres Nomor 49 Tahun 2021 seluruh sektor usaha terbuka bagi para investor kecuali 6 (enam) nidamg usaha yang telah dinyatakan tertutup pada Pasal 12 Perundang-Undangan Penanaman Modal. Tujuan dari penelitian berikut adalah percerminan arah supaya penyusunan hukum berikut tidaklah menyimpang melalui tujuan semulanya. Menurut judul studi berikut, variasi studi yang diusung adalah Studi Yuridis Normatif. Hasil penelitian pada studi yuridis normatif, penulis kemudian melaksanakan analisa serta interpretasi pada dokumentasi hukum semisal perundang-undangan, PP, putusan pengadilan, serta litrasi hukum yang lain.Kesimpulan dari studi didapatkan bahwa perubahan dari DNI menjadi DPI menunjukkan perubahan kebijakan pemerintah yang menguntungkan industri minuman keras. Namun, ketidakpastian hukum yang timbul dari terbitnya Perpres 49 Tahun 2021 dan penundaan atau penangguhan UU Cipta Kerja menimbulkan keraguan terhadap keberlakuan regulasi tersebut. Klarifikasi dan revisi yang diperlukan dalam peraturan perundang-undangan menjadi penting untuk menciptakan kepastian hukum yang diperlukan bagi industri minuman keras dan para pelaku usaha di dalamnya serta terjadinya pro kontra antara Pemerintah dan masyarakat. Kesimpulan dari penelitian ini dampak penerbitan aturan daftar positif investasi pada aktivitas penanaman modal di Indonesia dalam sektor usaha perindustrian minuman keras (miras) berdasarkan peraturan UU yang ada terkait legalitas miras.
Peranan Pemerintah dalam Pengelolaan Limbah B3 di Kota Batam
Authors: Sumarni Eli , Dompak Timbul
Published: July 2024

Peran penting yang dimainkan oleh pemerintah dalam mengelola limbah Bahan Berbahaya dan Beracun (B3) di Kota Batam. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis peran pemerintah dalam pengelolaan limbah Bahan Berbahaya dan Beracun (B3) di Kota Batam. Penelitian ini menggunakan pendekatan kualitatif deskriptif dengan metode studi kasus untuk memahami secara mendalam peran pemerintah dalam pengelolaan limbah B3 di Kota Batam. Hasil penelitian ini mengungkap bagaimana pemerintah setempat memainkan peran sentral dalam upaya untuk mengatur, mengawasi, dan memastikan pengelolaan limbah B3 yang berkelanjutan dan bertanggung jawab. Pertama-tama, pemerintah berperan sebagai regulator yang menetapkan kebijakan dan regulasi yang ketat terkait pengelolaan limbah B3. Kebijakan ini mencakup berbagai aspek, mulai dari proses pengumpulan, pengangkutan, penyimpanan, hingga pemusnahan limbah. Dengan adanya kerangka regulasi yang jelas, perusahaan-perusahaan di Kota Batam diharapkan dapat mematuhi standar lingkungan yang ditetapkan, sehingga risiko pencemaran lingkungan akibat limbah B3 dapat diminimalkan. Selain sebagai regulator, pemerintah juga berperan sebagai fasilitator dalam memfasilitasi kolaborasi antara berbagai pihak terkait, termasuk perusahaan, lembaga swadaya masyarakat (LSM), dan masyarakat umum. Kesimpulan dari penelitian ini bahwa dalam upaya menangani masalah limbah B3 di Kota Batam, pemerintah telah mengambil langkah-langkah seperti menciptakan regulasi, memberikan insentif kepada industri, memantau aktivitas industri, dan meningkatkan kesadaran masyarakat.
Penerapan E-Navigation dalam Meningkatkan Ekonomi Maritim Nasional dalam Perspektif Hukum Indonesia
Authors: Yansalida Lisa , Widiarty Wiwik Sri , Panjaitan Hulman
Published: July 2024

Aspek hukum penerapan E-Navigation dalam kegiatan maritim di Indonesia memerlukan perhatian serius. Pemerintah Indonesia perlu mengevaluasi regulasi yang ada dan mengidentifikasi kekurangannya untuk mengakomodasi teknologi E-Navigation. Tujuan penelitian ini adalah untuk mengetahui dan menganalisis pengaturan serta aspek hukum implementasi E-Navigation dalam kegiatan maritim. Penelitian ini berfokus pada penelitian hukum normatif atau doktrinal, yang menganalisis teks hukum autoritatif untuk memperjelas aturan hukum tertentu. Hasil dari penelitian menunjukan penambahan item navigasi elektronik dalam program kerja Sub-Komite Keselamatan Navigasi dan Komunikasi Radio serta Pencarian dan Penyelamatan di IMO diusulkan untuk mengembangkan visi strategis pemanfaatan alat navigasi elektronik secara holistik. Dengan demikian, E-Navigation dapat membantu mengurangi kecelakaan dan kesalahan navigasi, serta mendukung agenda IMO mengenai pelayaran yang aman dan efisien. Indonesia, sebagai negara kepulauan dengan potensi maritim yang besar, perlu mengembangkan kebijakan maritim yang komprehensif untuk memaksimalkan potensi ekonomi maritimnya sambil tetap menjaga keselamatan dan keamanan pelayaran.
Analisis Kualitas Daya Listrik Gedung Direktorat Politeknik Negeri Samarinda
Authors: Brilliantie Davira  , Rusda Rusda , Khairuddin Karim
Published: July 2024

Masalah kualitas daya litsrik menjadi perhatian yang meningkat, karena ketidakstabilan tegangan dapat merusak peralatan yang sensitif terhadap perubahan tegangan, terutama peralatan elektronik. Peralatan-peralatan tersebut dapat rusak jika dialiri lisrik dari sumber yang tidak stabil. Permasalahan kualitas daya listrik dapat menyebabkan kerusakan dan penurunan kinerja pada peralatan elektronik yang terpasang. Penurunan kualitas daya dapat disebabkan oleh berbagai macam permasalahan contohnya adalah gangguan harmonisa dan ketidakseimbangan tegangan maupun beban. Tujuan dari penelitian ini adalah untuk menganalisis kualitas daya gedung Direktorat Politeknik Negeri Samarinda dengan menggunakan alat untuk pengambilan serta pengukuran data yaitu dengan Power Quality Analyzer (PQA). Hasil pengukuran ini selanjutnya akan dibandingkan dengan standar IEEE, sebagai evaluasi terhadap kualitas daya listrik di gedung Direktorat Politeknik Negeri Samarinda.
Koordinasi Rele Arus Lebih dan Rele Gangguan Tanah Pada Penyulang J4 dan J5 di Gardu Induk Karang Joang Balikpapan
Authors: Nainggolan Onglan , Masing  , Ikhwan Tantowi Ardiwinata
Published: July 2024

Sistem distribusi merupakan bagian dari sistem tenaga listrik. Sistem distribusi berfungsi untuk menyalurkan tenaga listrik dari sistem yang lebih besar sampai ke konsumen. Pada sistem ini digunakan tegangan menengah yang merupakan sistem yang paling banyak mengalami gangguan dibandingkan dengan sistem transmisi. Penggunaan peralatan proteksi dapat meminimalisir gangguan yang terjadi pada jaringan distribusi. Banyak peralatan proteksi yang digunakan pada jaringan distribusi diantaranya adalah over current relay (rele arus lebih) dan ground fault relay (rele gangguan tanah). Pengkoordinasian antara rele arus lebih dan rele gangguan tanah dilakukan agar alat proteksi dapat bekerja dengan tingkat selektifitas dan sensitifitas yang baik sehingga menjaga kontinuitas penyaluran energi listrik. Pada penulisan skripsi ini akan dibahas koordinasi setting rele arus lebih (OCR) dan setting rele gangguan tanah (GFR). Hasil perhitungan pada penyulang J4 diperoleh selisih waktu (grading time) OCR sebesar 0.4007 detik. Sedangkan untuk selisih waktu OCR pada penyulang J5 adalah 0.3983 detik. Untuk hasil perhitungan pada penyulang J4 diperoleh selisih waktu (grading time) GFR sebesar 0.3998 detik. Sedangkan untuk selisih waktu GFR pada penyulang J5 adalah 0.4 detik. Hal ini menunjukkan koordinasi dikatakan ideal.
Rancang Bangun Rele Arus Lebih Tipe Inverse Time Dengan Time Multiplier Setting 0,05 Detik Berbasis Arduino
Authors: Wijaya Becky Arya , Ihsandi Arief , Nainggolan Onglan , Murdiyat Prihadi
Published: July 2024

Rele arus lebih adalah perangkat yang penting dalam sistem proteksi untuk melindungi peralatan listrik dari kerusakan akibat arus lebih yang berlebihan. Tujuan dari penelitian ini adalah untuk merancang dan mengimplementasikan sebuah sistem rele arus lebih yang dapat mendeteksi dan menanggulangi arus lebih dengan prinsip proteksi inverse time, serta dikembangkan menggunakan platform Arduino yang populer dan mudah diakses. Metode yang digunakan dalam penelitian ini meliputi analisis kebutuhan sistem, perancangan hardware dan software, serta pengujian performa sistem dengan cara melakukan percobaan. Hasil pengujian menunjukkan bahwa sistem yang dikembangkan mampu mendeteksi arus lebih dan mengaktifkan rele dalam waktu yang hampir sesuai dengan karakteristik tipe inverse time yang ditunjukkan pada simulasi software ETAP. Setelah diambil lima puluh lima sampel data pengujian jika dibandingkan dengan simulasi ETAP didapatkan nilai rata-rata error 2,07244%.