bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Analysis of Thermal Decomposition Kinetics of Copolymers Based on Polyethylene Glycol Fumarate with Methacrylic Acid
Authors:   Karagandy University of the name of Academician E.A. Buketov, Kazakhstan, Tuleuov Ulygbek B. , Kazhmuratova Akerke T. ,   Karagandy University of the name of Academician E.A. Buketov, Kazakhstan, Bolatbay Abylaihan N. ,   Karagandy University of the name of Academician E.A. Buketov, Kazakhstan, Nassikhatuly Ermaut ,   Karagandy University of the name of Academician E.A. Buketov, Kazakhstan, Koishugulova Aizhan R. ,   Karagandy University of the name of Academician E.A. Buketov, Kazakhstan
Published: May 2023

The thermal properties of a copolymer based on polyethylene glycol fumarate with methacrylic acid in a nitrogen atmosphere were studied in this paper. Four various heating rates and two types of a polyester resin composition were used. The analysis of thermal decomposition kinetics was implemented. Three kinetics methods namely Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose and Friedman were applied. Curves of a thermogravimetric analysis demonstrated that the thermal decomposition of copolymers with different molar ratios was observed. It was determined that the kinetic data depends on the studied copolymers’ composition. The obtained data showed a good convergence in various heating rates. Also, the thermodynamic characteristics were calculated namely the changes in the Gibbs energy (ΔG), enthalpy (ΔH) and entropy of activation (ΔS). The Achar-Brindley-Sharp method was used to find the invariant kinetic parameters of decomposition. Thus, the the kinetic compensation effect was applied to define a reaction model and a pre-exponential factor. A main phase of the copolymer decomposition in a narrow temperature range was determined. It was attested by a peak on the differential curve. An insignificant mass loss of the volatile-matter yield was observed in the range of 30–150 °C.
Challenges and Prospects of Islamic Education Institutions and Sustainability in The Digital Era
Authors: Hidayat Abas , Fatimah Siti , Rosidin Didin Nurul
Published: May 2023

Educational institutions are places for educational activities that aim to change lives for the better. The development of digital technology requires educational institutions to establish and develop the education system continuously. This article explores the challenges and prospects of Islamic educational institutions and their sustainability in the digital technology era. The method used for this article is the qualitative inductive content analysis method. The findings are 1) Political changes, economic changes, and socio-cultural changes in society require Islamic education institutions to upgrade the institutional system and control all institution's activities. 2) Islamic education institutions' prospects include improving human resources and service quality, effectiveness and efficiency of financial management, and emphasizing promotion costs. 3) The future of Islamic education institutions, namely the sustainability of the institution's existence, the sustainability of the quality level of the institution, and the sustainability of invested resources.
Sources of School Income at The Jam'iyah Mahmudiyah Foundation
Authors: Daulay Nurika Khalila , Siahaan Amiruddin , Siregar Isra Adawiyah , Ritonga Lia Ariska , Maidiana Maidiana
Published: May 2023

This article aims to determine the source of school income Jam'iyah Mahmudiyah Foundation. This research seeks to explain how the source of school income for the Jam'iyah Mahmudiyah Foundation is. The method used in this research is qualitative. Data collection techniques using observation techniques, interviews, and documentation study techniques to obtain valid data about the source of school income. This research was conducted at MTs Jam'iyah Mahmudiyah which is located on Jl. Sheikh M. Yusuf, Tanjung Pura District. The results of the study indicate that the sources of school income at the Jam'iyah Mahmudiyah Foundation are divided into three, namely school income from the government, school income from students' parents, and income from independent school businesses obtained from several activities such as the management of the school canteen so that the sales or rental income where the sale will be collected so that it becomes a source of income. Then the management of school cooperatives and the rental of school-owned buildings and facilities which of course can become income for the foundation itself.
Creating Student Well Being in A Time of Pandemic in Children's Schools
Authors: Muharom Fauzi , Fikriyati Mirroh
Published: May 2023

This study aimed to determine the Karima Cita children's School in creating student well-being in the pandemic period. The study subjects were the head of Karima Cita children's School and the children's school teacher Karima Cita. The data collection techniques in this study use interviews and document studies. Data analysis techniques are data reduction, presentation of data, and conclusions. The result of the study is that the strategy of creating Student well-being in Karima Cita children's School in the pandemic period is first by inviting children to introduce new themes through the zoom meeting application or google meet. Second, make a small study group from house to house or home visit while still doing health protocols.  Third by preparing and providing a variety of learning with tools and materials. Fourth, create an activity sheet or module for home. Student well-being that wants to be achieved from the above strategies include children more prosocial to all friends and teachers, children get psychological welfare such as more spirit or more optimistic, happier, feel involved in learning activities and get more satisfaction in the learning experience, children will feel cared for by their teachers, children can be creative independently, and children have resilience in the face of learning achievement problems.
The Opportunity and Challenges of Implementing a Prototype Curriculum
Authors: Solikhah Putri Irma , Purnomo Purnomo
Published: May 2023

Learning loss due to the Covid-19 pandemic prompted the simplification of the 2013 Curriculum into an Emergency Curriculum, which was then refined into a Prototype Curriculum. Curriculum changes always bring optimism as well as skepticism. The hope for a new curriculum that is better in line with the ability of education providers in implementation. This research is evaluative research with a literature study approach. This study aims to make a corrective contribution to the policy coherence of the prototype curriculum. The data source comes from government policies supported by expert analysis of curriculum developers. Data analysis is rationally deductive. It was concluded that the prototype curriculum focused on developing non-technical abilities and character within the framework of Pancasila values, simplifying learning materials, and developing literacy and numeracy skills. Opportunities from this curriculum are reducing the administrative burden of teaching, and the design of learning becomes more flexible so that the quality of learning can be improved. The challenge is the teacher's readiness (attitudes and emotions, knowledge, and behavior). Based on the Ministry of Education's recommendation, which refers to the results of the 2020 UKG, it is stated that the quality and competence of teachers are still low, it is necessary to improve IT capabilities, and the KKG and MGMP functions are not yet maximized.
The Effect of Audio-Visual Media on Students' Learning Motivation on Islamic History Materials
Authors: Munawaroh Siti , Ghany Djunaidi , Patmanthara Syaad
Published: May 2023

The use of audio-visual media is considered an activity that can attract students' attention during teaching and learning activities. Audio-visual media is expected to be a medium that helps students understand the material and enjoy learning. These conditions, of course, aim to increase students' learning motivation to improve the quality of learning in the classroom, especially for PAI subjects. So, in the proof, the researcher wants to test the effect of audio-visual media on students' learning motivation in Islamic History Materials for Class V MI Mambaul Ulum Pakis Malang students. The research approach used in this research is quantitative research. Namely, research methods based on the philosophy of positivism are used to examine specific populations or samples. The research design used in this study was a quasi-experimental research design (Quasi Experiment) which involved one group of research objects. Then test the homogeneity of variance using Levene's equality of error variances test. Audio-visual learning media affects the learning motivation of fifth-grade students at MI Mambaul Ulum Pakis Malang. The paired t-test analysis results showed that the student's learning motivation before and after using audio-visual learning media was different from the t-test result of 4.01 with a significance level of 0.000 <0.05. The effectiveness of increasing the learning motivation of fifth-grade students at MI Mambaul Ulum Pakis Malang before and after using audio-visual learning media can be shown from the increase in the student learning motivation questionnaire results by 35.22% and the observation results of student learning motivation by 44.86%.
Evaluation of The CIPP Model on The Tahfidz Program in Islamic Boarding Schools
Authors: Ayyusufi Atikah Markhamah , Anshori Ari , Muthoifin Muthoifin
Published: May 2023

The purpose of this article is to describe the results of the comparative evaluation of the implementation of the tahfidz program between Pondok Darul Fithrah Tawangsari and PPTQ Ulul Albab Polokarto Sukoharjo in 2021/2022 in terms of the CIPP evaluation model for the students of the Ulya unit between the two Pesantren. This article used a qualitative type and includes field research. Data collection techniques used were observation methods, interview methods, questionnaires (questionnaires), and documentation methods. The findings of the research show that the implementation of the tahfidz al-Qur'an program at Pondok Darul Fithrah and PPTQ Ulul Albab has been going well. The context aspect between Pondok Darul Fithrah and PPTQ Ulul Albab tahfidz program is in the very good category. The input aspect of the tahfidz program at Pondok Darul Fithrah is in a good category, while the PPTQ Ulul Albab is in a very good category. In the process aspect, the tahfidz program at Pondok Darul Fithrah and PPTQ Ulul Albab are both in the very good category. Finally, the product aspect of the tahfidz program at Pondok Darul Fithrah is in a good category, there is one indicator in the form of a memorization target not being maximized with a percentage of 50-60%, while PPTQ Ulul Albab is in the very good category with a percentage of 90%.
The Implementation of The Mandatory Nature of Rasulullah in The Character Development of Students Through Learning of Akidah Akhlak
Authors: Fiqih Uky Fatanun , Hanief Muhammad , Sutarno Sutarno
Published: May 2023

The purpose of this article is to analyze the learning planning of the aqidah akhlak, analyze the implementation of learning and analyze the evaluation of the learning that has been carried out. The research methodology used is a qualitative type with a case study approach. The data collection technique used in-depth interviews, participatory observation, and documentation, while the data checking technique used the credibility test, transferability test, dependability test, and confirmability test. The subjects in this study were students of Madrasah Aliyah Nurul Hasan Ngraho. From the research conducted from February to April 2022, this article generates 1) the planning carried out in learning akidah akhlak used instructions from the syllabus and lesson plans; 2) the implementation of learning in improving character is aimed at learning using Islamic boarding school techniques, muhadhoroh activities, reading the yellow book, sorogan, and munaqosah madrasa activities; 3) learning evaluation at MA Nurul Hasan includes PH, PTS, PAS/PAT, and madrasa exams.
The Process of Curriculum Innovation: Dimensions, Models, Stages, and Affecting Factors
Authors: Supriani Yuli , Meliani Fitri , Supriyadi Asep , Supiana Supiana , Zaqiah Qiqi Yuliati
Published: May 2023

This article aims to explain the dimensions, models, stages, and affecting factors in the curriculum innovation process. Curriculum becomes very important in educational institutions because the curriculum is the "heart" of education. This research uses a descriptive qualitative approach with library research methods, using synthesis and content analysis. The results showed that the curriculum is a set of tools to achieve a goal, ranging from planning, and implementation to evaluation. Innovation or curriculum renewal needs to be done because education practitioners must adjust to the development of a society that is always changing and continues to grow. Innovations appear to answer critical issues in education. There are two models of innovation processes: the individual and the organizational models. Effecting factors in the curriculum innovation process are the vision-mission of education, population growth, the development of science-technology, and the relevant educational demands. Innovation must be the result of original and creative thinking. The application of innovation must be efficient, easy to use, and serves comfort for students, teachers, and practitioners of education.
The Effect of Teacher's Motivation on Student Learning Activities in Islamic Education Lessons
Authors: Mutaqorribain Syarifatul , Asrori Asrori , Rusman Rusman
Published: May 2023

The purpose of this study was to measure the effect of teacher motivation on student learning activities in PAI subjects at SMPN 39 Surabaya. In this study, the authors conduct quantitative research which is a knowledge discovery process that uses data in the form of numbers as a tool to find information about what we want to know. Based on the research problem formulation and the existing data analysis process, the following conclusions can be drawn: All teachers at SMPN 39 Surabaya have a high enough effort to motivate their students, including in the fairly high category. This can be seen from the creativity, activity, and absorption of student learning outcomes which are quite high. The relationship of motivation given by the teacher to student learning activities at SMPN 39 Surabaya is very influential with a fairly good interpretation, this is evident from the results of Statistical Analysis Table 22 which shows that the calculated Chi SChi-Square = 28.36 is greater than the Chi-Square table obtained Fo > Ft 5% (5.99) means the significance (Ho is rejected) and in the interpretation table the Contingency Coefficient value is 0.664 so it is in the range of numbers between 0.600 to 0.800 with a fairly high (good) interpretation which indicates a fairly good relationship between the motivation given by the teacher and student learning activities at SMPN 39 Surabaya in the 2021/2022 academic year.
Kyai's Leadership Strategy and Its Implications For Improving The Quality of Education
Authors: Ghafar Muhammad
Published: May 2023

This article results from field research that reveals the kyai's leadership strategy and its implications for improving the quality of education at the Amanatulloh Islamic Boarding School in Banyuwangi. In this study, data analysis was carried out since the data collection was rechecked. The study results concluded that the leadership strategy of K.H. Rouhin Huda in improving the quality of education of the Amanatullah Islamic Boarding School in Banyuwangi is carried out by changing the mindset of human resources. It is improving the quality of teachers and collaborating with businesses, and improving the quality of students/students. Curriculum development. Leadership Implications, K.H. Rouhin Huda in improving the quality of pesantren education, among others, in the dimensions of open communication between members of the organization. Improving innovation and creation in work or pursuing higher education as well as strengthening cohesion between members of the organization and a comfortable organizational climate.
Online IRE Learning during the Covid-19 Pandemic in Yogyakarta Between Opportunities and Challenges
Authors: Armansyah Awang Dhany , Suud Fitriah M.
Published: May 2023

This article aims to determine the process and impact of online IRE (Islamic Religious Education) learning in Yogyakarta. This study uses a qualitative descriptive method with research subjects consisting of principals, teachers, students, and parents. The results of the study revealed that students can be categorized into three, namely those who like (1) face-to-face learning, (2) online learning, and (3) offline and online learning. However, among the three categories, the highest number is found in students who do not like online learning. A phenomenon was found that revealed that parents were bored with online learning and were unable to guide their children to study at home. The inhibiting factors for teachers include students being less active in learning, the difficulty of finding the right method so that students do not get bored quickly, and student assessments using family accounts. Parental barriers consist of parents who cannot teach their children during online learning, taking turns using mobile phones with their children, and parents who are busy working. While the supporting factors are learning quota assistance, the availability of computer laboratories, and parents always coordinating with teachers. Online learning has been shown to have an impact on students' economic, social and psychological conditions.
Good Practice of Educational Leadership to Succeed in The School Literacy Movement
Authors: Suriagiri Suriagiri
Published: May 2023

Leadership in an institution is very important to achieve success in an institution, including leadership in education. This study aims to determine educational leadership that is considered ideal so that it not only improves the quality of education but can also achieve the level of success of the school literacy movement. The research method used in this research is qualitative with a literature review. The literature used is national, and international journals, books, documents, and other literature related to this research study. The findings of this study indicate that; First, to improve the quality of education, ideal leadership is needed, so that good relations between superiors and subordinates can improve the quality of education in the educational institutions that are led. Second, ideal leadership is also so that there is harmonization between superiors and subordinates so that the teaching and learning process is not pursuing achievement but teach according to the profession so that it can improve the literacy of students in schools.
Peer Group Optimization in Developing Religious Culture of High School Students
Authors: Abidin Zainal , Jaudi Jaudi , Imaduddin Imaduddin , Mukhaemin Mukhaemin
Published: May 2023

The background of this research is the decline of religious culture among young people and students alike, then the influence of peer groups (Peer Group) was very strong in shaping the character of students for the need to optimize Peer groups in developing the religious culture of SMA Negeri 1 Pacet Mojokerto students. The focus of research in this study is 1) Optimization of Peer Group in developing the religious culture of SMA Negeri 1 Pacet Mojokerto students, 2) The constraints of optimizing Peer Group in developing the religious culture of students of SMA Negeri 1 Pacet Mojokerto. The method used is the descriptive qualitative method. Data collection techniques using direct observation, interviews, and documentation. The data analysis stage uses the Milles and Huberman method which is done through data reduction, data presentation, verification, and conclusions. Checking the validity of the data using triangulation techniques. The subjects of this study are the Principal, Islamic Religious Education Teachers, and Students as additional subjects, while the object is the Peer Group and religious culture. The results of this study note that the optimization of the Peer Group at SMA Negeri 1 Pacet Mojokerto in developing religious culture went smoothly. The constraints in optimizing Peer Group in SMA Negeri 1 Pacet Mojokerto in developing students' religious culture in the form of internal, external, and endogenous factors.
Implementing of Al Bidayah Method to Improve The Kitab Kuning Reading Skills
Authors: Hasanah Neneng , Uyuni Yuyun Rohmatul , Lismawati Lismawati , Fauziah Fauziah , Dirjo Dirjo
Published: May 2023

This article aims to analyze the application of the al-bidayah method in reading the Kitab Kuning and its obstacles in Islamic boarding schools. The research method uses qualitative methods with an exploratory approach. The research was conducted at the Daar el Hasanah Islamic Boarding School, Jawilan District, Serang Regency, Banten Province. Collecting data through direct observation, interviews with ustadz and students, and document studies. The data processing technique was carried out by means of data verification, data presentation, data reduction, and drawing conclusions from the research results. The data analysis technique of the research results is done by interpreting and concluding the findings. The results showed that the application of the al-bidayah method combined with existing programs at the Daar El Hasanah Islamic Boarding School was very effective in developing the ability of students to read and understand the Kitab Kuning. The obstacles found in the application of the al-bidayah method in reading the Kitab Kuning in the Daar el Hasanah Islamic boarding school are the ability of students to be beginners, to memorize a lot of rules, and to have a solid student learning time. However, this study recommends that the al-bidayah method be applied in teaching how to read the Kitab Kuning in Islamic boarding schools.
Implementation of Character Education In Integrated Islamic Elementary School
Authors: Neliwati Neliwati , Isa Muhammad , Ansari Rija , Lubis Siti Rahma Qomaruddin
Published: May 2023

Institutions considering a wide range of non-educational behavior has now been penetrated in our educational institutions. Such behavior, among others: the phenomenon of violence, sexual abuse, mania business through schools, corruption and arbitrariness that occur among school. After conducting a  reliminary study in Integrated Islamic Elementary School Anak Sholeh Hinai, Langkat it can be concluded while, that the Integrated Islamic Elementary School Anak Sholeh Hinai, Langkat is an educational institution that began to notice the importance of character education.This study used a qualitative descriptive approach. In collecting the data, the authors using observation, interviews, and documentation.This study produced three findings: first from the aspect of planning is done in several ways, including: a) Designing school conditions conducive, b) Designing curriculum of character education explicitly, c) Creating a curriculum characters integrative, d) Management of classrooms, e) environmental management outside the classroom. Both at the level of implementation is done, among others: a) Cooperation between the school community, b) Applying the model, c) Habituation pray, d) Guidance Qur’an intensive, e) Appreciating the creativity of learners, f) Establish a harmonious relationship between teachers and learners. Third at the level evalusinya do several things, among others: a) Cooperation with parents of learners (co parenting), b) strict supervision of the character, c) Home visit (Home Visits), d) Issue a communication book.
Improving The Quality of Learning Based on Sustainable Development Goals
Authors: Pragusta Reska , Pardiman Pardiman , Harijanto Djoni
Published: May 2023

This article internalizes the value of Sustainable development of goals (SDGs) into the learning process of MAN 1 Malang. Now MAN 1 Malang is not only being challenged by the old challenges, namely finding Islamic and Indonesian characters and modernization challenges, but also internalizing the SDGS values ​​into the learning process. The research method used is qualitative with the type of case study research. Researchers collected data utilizing in-depth interviews, participant observation, and documentation. While data analysis with data presentation, data condensation, and concluding. As for checking the validity of the data, it is done by using credibility, transferability, dependability, and confirmability techniques. This study resulted in the findings: the development of SDGs-based learning in madrasah aliyah places the basis on intelligence, knowledge, noble character, personality, and concern for the environment. The attitude of concern for the environment includes student behavior in student interpersonal interactions such as honesty, discipline, confidence, caring, and responsibility for oneself, family, and nature according to the main goal of sustainable development of goals.
Implementation of Akhlakul Mahmudah Education at Madrasah Aliyah
Authors: Supriani Yuli , Ahmad Nurwadjah , Suhartini Andewi
Published: May 2023

Abstract
This article aims to describe and analyze the implementation of noble moral education and its supporting and inhibiting factors. The research approach is a qualitative study conducted in Madrasah Aliyah Al-Hidayah Ibun Bandung with the subject of principal and teacher research. For data collection, interviews, observations, documentation, and Focus Group Discussions were conducted. Techniques of data analysis in this research are data reduction, data display, and data verification then concluding the data that has been presented gradually to be the research findings. This paper concludes that: principals and teachers have attempted to implement noble moral education to learners through exemplary education, habituation, attention, giving advice, and educational punishment. Supporting factors of school principals who seek to disseminate school vision and mission to the school community and cooperation between school principals and other components. Inhibiting factors are still inadequate for mushola and fund allocation for religious activities.
Implementation of Anti-Bullying Education Values in Akidah Akhlak Subjects
Authors: Syahputra Muhammad Ilham , Nahar Syamsu , Rakhmawati Fibri
Published: May 2023

This article aims to determine the values ​​of anti-bullying education in the Akidah Akhlak subject and its implementation, the obstacles faced in its application, and the positive impact after the learning is carried out. This research uses descriptive qualitative research with data collection techniques through observation, interviews, and documentation. The findings in this study reveal that the values ​​of anti-bullying education in Akidah Akhlak subjects at SMPs Al-Azhar Medan are the values ​​of khauf, obedient, patient, kind, tolerant, helping, brave and communicative. Meanwhile, in its implementation, Akidah Akhlak teachers use interesting learning stages and varied methods such as the story method. The obstacles faced include internal and external factors. Meanwhile, after the implementation of anti-bullying education, the positive impacts were that there were no more reports from anti-bullying change agent students about students bullying their friends and the report notes were empty about students who were brought to the BK (Counseling Guidance) room about bullying problems.
Internalization of Spiritual Values in Forming Student Character Through Tahfidzul Qur’an Extracurricular Activities
Authors: Siregar Akublan , Budianti Yusnaili , Rifai Muhammad
Published: May 2023

This article aims to discover the existence of spiritual values ​​in extracurricular activities, the process of inculcating spiritual values ​​in shaping students’ character, and the obstacles and results of applying spiritual values ​​in extracurricular activities of Tahfizul Qur'an at Pondok Pesantren Al-Mukhtariyah Sungai Dua. This study uses qualitative research with a descriptive approach. In collecting data, researchers used the methods of observation, interviews, and documentation. The results showed that Tahfizul Qur'an extracurricular activities were carried out before entering class, with Murajaah and repetition of memorizing. The process of inculcating spiritual values ​​is carried out by refraction, combined learning methods, learning strategies emphasizing the role of mentor teachers, daily evaluations by checking memorization, monthly evaluations with verse connecting verse games, and semester evaluations with the Tahfiz exam. The obstacles in instilling spiritual values ​​are students' awareness, including taking advantage of the extended learning time in Islamic boarding schools, then the lack of cooperation with parents about memorizing children to what extent the child's abilities.
Content analysis of music education studies related to augmented reality technology
Authors: APAYDINLI Köksal
Published: May 2023

This study aims to examine the studies scanned in Web of Science and Scopus databases between 2006-2020 on the use of augmented reality applications in music education in terms of their descriptive features, methodological features, and outcomes, and to reveal the trends in this field. The criterion sample approach was utilized in this qualitative study, and 35 selected studies were reviewed using the publication classification form and analyzed using the content analysis method. The descriptive and methodological feature data were translated into frequency values using the SPSS 22 program and then interpreted using tables and charts for easy comprehension. Furthermore, the advantages and limitations of AR applications utilized in music education, which were the research's outputs, were coded, organized into relevant categories, and interpreted. The results showed that most studies focused on piano and guitar education for beginners; no studies were undertaken on wind instruments or voice training. Studies, particularly in recent years, have focused on user experience research. Furthermore, it was found that AR applications have the advantages of increasing and facilitating student learning performance, making learning exciting and fun, and providing motivation. Some challenges during use, owing to technical issues and limited field content in the programs, resulted in limited improvements in music education.
Development and Characterization ofCamel’s food (Piliostigmathonningii)Insulator for Lagging Application
Authors: Lawal Aliyu Mohammed , Gital DahiruYa’u
Published: May 2023

Due to the growing concern for renewable and biodegradable thermal insulation materials motivated by the pending energy crisis, global warming and the environmental impact of the waste product after their useful life, many researchers have worked on the thermal and physical properties of various insulators without giving much consideration to the mechanical properties. Therefore, this paper proposes to investigate the mechanical properties of developed Camel’s food (Piliostigma thonningii) insulator for lagging application. Camel’s foot (Piliostigma thonningii L.) is a leguminous plant found growing abundantly as a wild uncultivated plant resource in many parts of Nigeria. The leaves and the bark fibers of the plant were prepared in form of insulation boardsof thicknesses of 10, 20, 30 40, and 50mm using natural rubber latex as a binder. The ratio of the fiber to the binder in composition was 1:1, 1:2, 1:3 and 1:4.The test results showed that the insulation boards from bark fibers of the plant had good mechanical properties. The properties measured range as follows: ultimate tensile strength (11.66 to 6.96M. Pa); compression strength (0.09 to 0.07 M.Pa), flexural modulus (2545.96 to 2184.07 M.Pa)and flexural strength (53.09 to 29.96 M.Pa). According to the test results, it can be concluded that these insulation boards from the bark fibers of the plant had excellent mechanical properties.
Methods of Protection against Threat: Incorrect Ballot Filling by Voter in the Remote Electronic Voting System
Authors: Yakovlev V. , Salman V.
Published: May 2023

A generalized scheme of remote electronic voice based on homomorphic encryption is considered. Two methods of protecting the voting system from the threat from the voter, consisting in incorrect filling of the ballot by the voter, are investigated. Both methods are based on the algorithms of “zero-knowledge proof”. Evaluations of the complexity of calculations in the formation of proof of the correctness of filling in the ballot by the voter and Evaluations of the complexity of verification of the proof by the controlling party are obtained. A comparative analysis of the complexity of the implementation of both methods has shown that the method based on the proof based on the equality of logarithms has less complexity of calculations on the voter's side compared to the method based on the mixing of votes. At the same time, the second method (the method of mixing votes) requires 1.67 times less calculations in the blockchain, which becomes a significant factor in choosing the second method in favor of a large number of voters.
Prototype of High-Speed Data Transmission Receiving and Transmitting Equipment in the 57‒64 GHz Frequency Range
Authors: Bolkhovskaya O. , Ermolaev G. , Trushkov S. , Maltsev A.
Published: May 2023

The purpose of this work is to create and study the characteristics of a prototype of receiving and transmitting equipment operating in the millimeter wavelength range in high-speed data transmission networks. During the work, the task of developing and software implementation of digital signal processing algorithms was solved, the hardware part was developed and implemented, experimental measurements of characteristics and field tests of the prototype were carried out. Experimental studies have shown that the developed equipment transmits and receives signals in the frequency range 57‒64 GHz with the possibility of discrete change of the signal frequency bandwidth: 100, 200, 400, 800 MHz and supports 12 modulation and coding schemes with low-density parity check code. The use of an adaptive algorithm for demodulation and decoding at the receiver made it possible to increase the efficiency of signal transmission and reduce the probability of packet errors by half. The developed prototype provides a data transmission rate of 2 Gbit/s at distances up to 100 m and of 500 Mbit/s at distances up to 300 m.
Quasi-Soliton Mode in a Multi-Span Fiber-Optic Communication System Using Optical Amplifiers
Authors: Glagolev S. , Dotsenko S.
Published: May 2023

The paper considers a method for maintaining a quasi-soliton mode in a multi-span fiber-optic communication system using discrete Erbium optical amplifiers, as well as Raman amplifiers with distributed amplification with counter and bidirectional pumping. The OptiSystem 19 and OptiPerformer 19 programs were used to model quasi-soliton fiber-optic communication systems. The simulation results are compared with theoretical data, and the advantages of a fiber-optic communication system with a Raman amplifier and bidirectional pumping are demonstrated.
PENERAPAN PIDANA OLEH HAKIM TERHADAP TERDAKWA TINDAK PIDANA PERTAMBANGAN TANPA IZIN DALAM KAWASAN HUTAN
Authors: Madjid Neni Vesna , Putra Mekky
Published: May 2023

The judge's considerations in applying the crime to the defendant for the criminal act of mining without a permit in a forest area in Decision No.42/Pid.Sus/2020/Pn.Kbr legally fulfill the element of carrying out production to obtain gold which is a metal mineral group mining commodity without a permit, which regulated in Article 158 of Law Number 3 of 2020 concerning Amendments to Law Number 4 of 2009 concerning Mineral and Coal Mining in conjunction with Article 55 paragraph (1) 1st of the Criminal Code. Non-juridically, it is an aggravating situation where the actions of the Defendants can result in environmental damage. In Decision number 167/Pid.Sus/2021/Pn.Kbr legally the Judge's consideration is fulfilling the element of participating in committing a crime, namely acting as a helper whose job is to refuel and clean 1 unit of excavator. Criminal Application by Judges Against Perpetrators of Criminal Acts of Mining Without Permits in Forest Areas in Decision No.42/Pid.Sus/2020/Pn.Kbr namely Convicting criminals with imprisonment for 6 (six) months each and a fine of each Rp. 5,000,000.00 (five million rupiah) with the provision that if it is not paid, it will be replaced with confinement for 5 (five) days. Verdict No. 167/Pid.Sus/2021/Pn. Kbr. decided to participate in mining without a permit.
PENCEMARAN, KERUSAKAN ALAM DAN CARA PENYELESAIANNYA DITINJAU DARI HUKUM LINGKUNGAN
Authors: Azami Takwim , Kustanto Anto
Published: May 2023

Dalam Pasal 33 ayat (3) UUD 1945 yang menyatakan bahwa: “bumi dan air dan kekayaan alam yang terkandung didalamnya dikuasai Negara dan dipergunakan sebesar-besarnya untuk kemakmuran rakyat”. Ketentuan tersebut diatur lebih lanjut didalam UU No. 23 Tahun 2009 Tentang Perlindungan dan Pengelolaan Lingkungan Hidup, di dalam ketentuan Pasal 57 ayat (1) diatur mengenai tata cara pemeliharaan lingkungan hidup yaitu: “Pemeliharaan lingkungan hidup dilakukan melalui upaya, a) konservasi sumber daya alam, b) pencadangan sumber daya alam, c) pelestarian fungsi atmosfer.” Namun pada kenyataanya pelaksanaan dari pasal tersebut belum bisa dilaksanakan secara maksimal. Penggunaan bumi dan air dan kekayaan alam untuk kemakmuran rakyat di Indonesia belum berjalan secara baik, hal ini diakibatkan oleh semakin maraknya pencemaran lingkungan yang marak terjadi Indonesia, baik pencemaran air, pencemaran udara maupun pencemaran tanah. Pencemaran dan perusakan lingkungan hidup merupakan salah satu ancaman yang serius bagi kelestarian lingkungan hidup di Indonesia. Lingkungan hidup yang terganggu keseimbangannya perlu dikembalikan fungsinya sebagai pemberi kehidupan dan pemberi manfaat bagi kesejahteraan masyarakat dengan cara meningkatkan perlindungan lingkungan hidup, pembinaan masyarakat dan optimalisasi penegakan hukum lingkungan, hal ini bertujuan untuk menjaga eksistensi alam dan bertujuan untuk menyelesaikan masalah lingkungan hidup di Indonesia khususnya yang disebabkan oleh ulah manusia. Kata Kunci: Hukum Lingkungan, Polusi dan Kerusakan Lingkungan
Studies on Compressive Loading-characteristics of PU Foam Materials Used in Footwear for Obese
Authors:   Department of Mechanical Engineering, Anna University, Chennai-600025, India., MATHIVANAN S. , MOHAN R. ,   Department of Mechanical Engineering, Anna University, Chennai-600025, India., C PANDA RAMES ,   Department of Mechanical Engineering, Anna University, Chennai-600025, India., BALACHANDER P. ,   Department of Mechanical Engineering, Anna University, Chennai-600025, India.
Published: May 2023

Optimum-designed footwear with polyurethane (PU) material for comfort is an important requirement for obese. Investigations on compressive behavior of varied designed footwear using 120 D PU material have been carried out. The energy absorption primarily depends on heel height, slope angle and load applied or body mass index of obese. Statistical analysis has been used to formulate the prediction of absorbed energy wherein a heel height of 30 mm with 20-degree angle provides optimum value with the incorporation of 120 D PU material. A coefficientof- determination (R2) value of 0.9406 confirms the suitability of the statistical regression model. Hence, the optimally designed footwear for higher energy absorption with 120 D PU foam material is recommendable for obese.
Fabrication and Comparative Properties of Sustainable Epoxy Methacrylate of Bisphenol-C-Jute/Treated Jute- Natural Fibers Sandwich Composites: Part-2
Authors:   Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India., D. BHATT RITESH , P. PATEL JIGNESH ,   Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India., H. PARSANIA PARSOTAM ,   Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India.
Published: May 2023

Compression-molded epoxy methacrylate of bisphenol-C-jute/treated jute-banana/groundnut/ cane sugar/pineapple leaf/rice husk/wheat husk sandwich composites were fabricated under 5 MPa pressure at room temperature for 3 h. Alkali treated jute-natural fiber sandwich composites displayed considerably improved mechanical properties over untreated jute-natural fiber sandwich composites due to surface modification of the jute fibers. Both types of sandwich composites showed high water uptake tendency, excellent hydrolytic stability against acids, alkali, and salt solutions, and also a longer equilibrium time at 30oC. Alkali treated sandwich composites revealed a considerably lower water uptake tendency than untreated sandwich composites. Observed water uptake trend is H2SO4 > HCl >NaOH >H2O>NaCl.
Tin Slag Polymer Concrete Strengthening by Basalt and Aramid Fiber Reinforced Polymer Confinement
Authors:   Structural Performance Materials Engineering (SUPREME), Faculty of Mechanical & Automotive Engineering Technology, Universiti Malaysia Pahang, Pekan, Pahang, Malaysia., BIN MANDA MUHAMAD SOFFI , MAT REJAB MOHD RUZAIMI BIN ,   Structural Performance Materials Engineering (SUPREME), Faculty of Mechanical & Automotive Engineering Technology, Universiti Malaysia Pahang, Pekan, Pahang, Malaysia., HASSAN SHUKUR ABU ,   School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 UTM Skudai, Johor Bahru, Johor, Malaysia., BIN WAHIT MAT UZIR ,   School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 UTM Skudai, Johor Bahru, Johor, Malaysia., SELVI BINOJ JOSEPH ,   Institute of Mechanical Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai -602105, Tamil Nadu, India., MANSINGH BRIGHT BRAILSON ,   Department of Mechanical Engineering, Sri Ramakrishna Engineering College, Coimbatore 641022, Tamil Nadu, India., AMIRNUDDIN SITI SAFARAH BINTI ,   School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 UTM Skudai, Johor Bahru, Johor, Malaysia., ALI ALAMRY ,   Department of Mechanical Engineering, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia., LIM GOH KHENG ,   Department of Mechanical Engineering, Newcastle University in Singapore, Singapore., NURHADIYANTO DIDIK ,   Department of Mechanical Engineering Education, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia.
Published: May 2023

This study investigates the potential of Tin Slag Polymer Concrete (TSPC) strengthening through confinement using basalt fiber reinforced polymer (BFRP) and aramid fiber reinforced polymer(AFRP) confinement. TSPC short cylindrical column samples have been wrapped with BFRP and AFRP in a single layer (30 mm overlap) using Sikadur-330 epoxy and final samples were coded as TSPC-UC, TSPC-BF and TSPC-AF for unconfined, BFRP and AFRP for confined respectively. After curing for 30 days at room temperature, compressive test has been performed to know the strength, modulus, strain, fracture energy and failure modes of unconfined and confined TSPC.
Comparative Investigations on Fracture Toughness and Damping Response of Fabric Reinforced Epoxy Composites
Authors:   Associate Professor, Department of M.E., Future Institute of Engineering and Technology, Bareilly -243202, India., AGARWAL GAURAV
Published: May 2023

Studies were conducted to observe the effect of fracture toughness and damping response on fabric reinforced epoxy polymer composites. The samples of glass fabric, kevlar fabric and carbon fabric having 15wt%, 25wt%, 35wt%, 45wt% and 55wt % fabric content were prepared and tested following ASTM standards. Fracture toughness, peak load and increase in energy absorption are determined for the fabric-epoxy composites. Effect of temperature on storage modulus, loss modulus and tan delta values for various percentages of fabric epoxy composites are noticed and corresponding damping response behaviour is determined. The results revealed that reduction in strength at higher percentage of fabric content is due to improper bonding between fabric and epoxy resin. Higher peak load values and increased values of energy absorption are observed at lower percentage of fabric content. Kevlar fabric proves to be beneficial for specific energy absorption capability. Strength retention capability at higher temperature is far better for carbon fabric epoxy combinations. Composites with lower fabric content retain much higher temperature and peak load. Also the experimental findings are in close proximity with that of theoretical results.
Enhancing the Performance of Polylactic Acid (PLA) Reinforcing with Sawdust, Rice Husk, and Bagasse Particles
Authors:   Department of Mechanical Engineering, Saveetha Engineering College (Autonomous), Saveetha Nagar, Thandalam, Chennai-602105, India., KUMAR A. MADHAN , JAYAKUMAR K. ,   Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, OMR, Kalavakkam, Chennai - 603110, India., SHALINI M. ,   Department of Computer Science and Engineering, St. Joseph’s College of Engineering, OMR, Chennai -600119, India.
Published: May 2023

Polylactic acid (PLA) is the most popular thermoplastic biopolymer providing a stiffness and strength alternative to fossil-based plastics. It is also the most promising biodegradable polymer on the market right now, thus gaining a substitute for conservative artificial polymers. Therefore, the current research focuses on synthesizing and mechanical characterization of particlereinforced PLA composites. The hot compression molding technique was used to fabricate PLA-based composites with 0, 2.5, 5, and 7.5 weight % of sawdust, rice husk, and bagasse particle reinforcements to enhance the performance of the PLA. The pellets of PLA matrix were taken with an average size of 3 mm and particle reinforcements of an average size of 50 m were used as the raw materials. After processing the PLA composites, microstructural and mechanical characterization studies were carried out to check the uniform distribution of the reinforced particles on the PLA matrix and the improvement in their strength, respectively. The results found hardness varied from 29.7 to 36.1 Shore D, tensile strength from 46.2 to 62.5 MPa, impact strength from 14.5 to 17.4 kJ/m2 and flexural strength from 78.9 to 93 MPa from all processed composites. In addition, SEM images were taken to perform a microstructural evaluation of the PMCs.
The HERMESS model for addictive behaviors recovery
Authors: Molina-Fernandez Antonio Jesús
Published: May 2023

Introduction: Addictive behaviors treatment networks are composed of harm-reduction services and recovery-oriented programs. Recovery is a perspective in addictive behavior intervention based on the empowerment, competencies, and life skills of a person with addictive behaviors. Recovery-oriented programs have advanced from traditional therapeutic communities to actual integral services, which are integrated in social and health networks and developed by multidisciplinary professional staff. This evolution has not been systematic until XXIst century, with the beginning of “Science of Recovery”. b) Aims: to analyse the development of recovery programs, especially the theoretical models and good practices actually in development into European programs and to present the HERMESS Recovery model. c) Development of the topic: they have been analysed theoretical models and good practices about recovery. d) Conclusions: the “Science of Recovery” is advancing to validated, replicable and measurable models and programs. Recovery-oriented programs must be integrated and connected with harm reduction networks, social services, health systems, and employment services; recovery is based on empowerment and peer social support, so it´s necessary to develop structured programs for these topics; it´s also necessary to create specific actions for several collectives, as develop evaluation systems to validate efficiency and adequacy of recovery- oriented programs. As a main conclusion, the HERMESS recovery model was developed to be a reference for new recovery-oriented programs.