UNY Journal (Universitas Negeri Yogyakarta)
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Energy and exergy analysis of coal-fueled fire tube alstom boiler using direct method: case study at garment factory
Get PDFThis research analyze the energy and exergy efficiency of coal-fueled fire tube Alstom boiler operating for five years (2019 – 2024) in garment factory using the direct method. Energy efficiency reflects how effectively coal energy is converted into steam, while exergy efficiency assesses the portion of that energy available for useful work. Results indicate a decline in energy efficiency from 75.92% in the first year to 65.47% in the fifth year due to scale buildup, increased heat loss through blowdown and flue gas, and component degradation. Similarly, exergy efficiency dropped from 24.45% to 22.00%, primarily due to heat loss from boiler walls and steam pipes, high-temperature flue gas, and combustion inefficiencies. A temporary efficiency increase in the fourth year resulted from improved maintenance, but the decline continued in the fifth year. These findings emphasize the need for regular maintenance and combustion optimization. Measures such as routine cleaning, fuel quality monitoring, and thermal insulation improvements can mitigate energy losses and enhance efficiency. Implementing these strategies can sustain or improve energy performance, contributing to industrial sustainability through more efficient energy consumption
Studi fenomenologis kebahagiaan guru taman kanak-kanak di Yogyakarta
Get PDFPenelitian ini bertujuan untuk mengungkap kebahagiaan guru taman kanak-kanak di Yogyakarta. Pendekatan kualitatif dengan analisis fenomenologi interpretatif digunakan dalam penelitian ini. Partisipan dalam penelitian ini adalah tiga guru taman kanak-kanak. Pengumpulan data dilakukan melalui wawancara mendalam. Hasil penelitian memberikan gambaran tentang kebahagiaan ketiga partisipan yang diinterpretasikan sebagai kondisi ringan, nyaman, dan didukung secara sosial. Temuan penelitian ini juga mengidentifikasi kesejahteraan subjektif yang mencakup komponen kognitif (kepuasan hidup) dan afektif (afek positif dan negatif). Penelitian ini turut mengungkap faktor-faktor yang memengaruhi kesejahteraan subjektif yaitu dukungan sosial, rasa syukur dan penghargaan, serta spiritualitas
Problematic Internet Use Questionnaire-Revised (PIUQ-R) versi Indonesia: Pengembangan dan analisis properti psikometri
Get PDFPrevalensi penggunaan internet yang bermasalah atau disebut sebagai problematic internet use (PIU) mengalami peningkatkan dari tahun ke tahun sehingga diperlukan sebuah alat ukur guna mendeteksi perilaku tersebut. Di Indonesia, sudah dikembangkan Problematic Internet Use Questionnaire (PIUQ) berbahasa Indonesia, namun beberapa item dinilai masih membingungkan dan sampel terbatas. Penelitian ini bertujuan untuk merevisi item dan menguji ulang analisis properti psikometri dengan melibatkan subjek dengan karakteristik yang lebih luas. Partisipan dalam penelitian ini sebanyak 301 orang yang berdomisili di Jawa Timur, Jawa Tengah, dan Daerah Istimewa Yogyakarta. Instrumen dalam penelitian ini menggunakan Problematic Internet Use Questionnaire (PIUQ) versi Indonesia dan Beck Depression Inventory-II (BDI-II). Teknik analisis data dalam penelitian ini yaitu pengumpulan bukti validitas dan estimasi reliabilitas. Hasil analisis menunjukkan bahwa PIUQ versi revisi memiliki struktur faktor yang sesuai dan menunjukkan reliabilitas yang baik. Dengan demikian, PIUQ versi revisi dapat digunakan sebagai alat skrining yang valid dan reliabel untuk mendeteksi kecenderungan penggunaan internet yang bermasalah di Indonesia, khususnya dalam konteks penelitian, namun, belum direkomendasikan untuk tujuan diagnosis klinis
Learning management system utilization and perceived training benefits among vocational teachers
No full textThe use of Learning Management Systems (LMS) in teacher training is now an important strategy for improving professional competence in the digital era, especially in vocational education in business and tourism. However, so far, little research has specifically examined the relationship between LMS use and the benefits teachers experience after participating in training. Given these conditions, this study was conducted to analyze the relationship between LMS utilization and training benefits from the perspective of upskilling and reskilling program participants. The study used a quantitative approach with a questionnaire instrument distributed to 108 teachers who had participated in the upskilling and reskilling program. The data were processed using descriptive statistics and Spearman's Rho correlation test due to their non-normal distribution. The analysis results showed a strong positive relationship between LMS utilization and training benefits (ρ = 0.771; p < 0.001). This means that the more effectively the LMS is used during training, the greater the benefits for teachers, especially in terms of ease of access to materials, increased interaction, and strengthened professional competencies. Thus, the LMS not only serves as a platform for delivering materials but also becomes a medium for reflective learning and supports the professional development of vocational teachers. The results of this study provide practical contributions for training institutions and policymakers to strengthen the implementation of LMS in teacher development, while also opening space for further research on its long-term impact on the quality of learning in vocational high schools
Managing distance learning workloads during the MBKM internship program: Challenges and student coping strategies
No full textThe MBKM Internship Program allows students to gain professional experience while simultaneously completing university courses, often requiring them to participate in distance learning. This study investigates the challenges encountered by English Education students at Universitas Lancang Kuning in managing online coursework during their internship activities and explores the strategies they employed to handle academic workloads. Using a qualitative design with thematic analysis, eight students participating in the Certified Internship Program were selected purposively. Data were collected through semi-structured interviews and document analysis. The findings reveal three major challenges in attending distance learning: information gaps caused by limited instructional explanation, communication barriers due to restricted device use during working hours, and schedule conflicts between internship responsibilities and university courses. To address these challenges, students adopted three primary strategies: maintaining peer interaction for academic support, enhancing student–teacher communication through polite and purposeful contact, and maximizing online resources to complete assignments efficiently. The study concludes that although managing both internship duties and online coursework is demanding, students can successfully navigate these dual responsibilities through adaptive communication practices and strategic use of digital resources. These findings highlight the importance of institutional support in synchronizing academic schedules and improving the quality of distance learning for MBKM participants
Global connections from Bandung: youth forum as a new pillar of city paradiplomacy: Koneksi global dari Bandung: youth forum sebagai pilar baru paradiplomasi kota
No full textThis research aims to analyze the forms and levels of youth participation in supporting the implementation of paradiplomacy in the City of Bandung through the Bandung Sister Cities (Basic) Youth Forum, particularly in the sister city relationship between Bandung and Braunschweig. Using a descriptive-analytical qualitative approach, data were collected through in-depth interviews, online searches, and document reviews, and verified through triangulation techniques. This research is based on the participation theory by Cohen & Uphoff (1977) and Roger Hart's ladder of participation model (1992), as well as the concept of paradiplomacy by Kuznetsov and Tavares. The research results show that the participation of the Basic Youth Forum is classified as participation in implementation, where the youth are involved in the technical execution of paradiplomacy activities, but not yet in the planning or policy evaluation stages. The level of participation falls into the category of adult-initiated, shared decisions with youth, meaning the initiative comes from adult actors (government agencies), but involves youth in the decision-making process of activity implementation. These findings underscore the importance of strengthening participatory structures in regional paradiplomacy, including the formulation of concrete work plans to ensure that youth involvement is not merely symbolic. Thus, the Basic Youth Forum has the potential to become a strategic pillar in more inclusive and sustainable city diplomacy
Penguatan amaliah keshalihan mahasiswa melalui tutorial PAI di Universitas Pendidikan Indonesia: Pendekatan kokurikuler
No full textThe reinforcement of Islamic Religious Education outside the classroom can utilize co-curricular activities to ensure the achievement of essential learning objectives, namely developing students' potential for faith, piety, and noble character. This study aims to analyze the role of tutorials in enhancing the religious practices of students at UPI, making this research important as it can provide solutions to address the shortage of classroom instructional hours. This research method is qualitative, with the subjects being the Head of the Tutorial Program, Lecturers, Tutors, and PAI participants. Data collection was conducted through interviews, observations, and documentation. Data analysis included reduction, presentation, verification, and conclusion drawing. The results of this study indicate that the reinforcement of religious practices is carried out through examples, encouragement, commands, practice, rewards, and the like. The material taught relates to the relationship with God (Habluminallah), the relationship with others (Habluminannas), and the relationship with the environment (Hablumin al-alam). The religious character formed strengthens individual religious commitment in worship or religious practice (the ritualistic dimension) and reinforces individual religious commitment in the dimension of effect or experience. This research implies the importance of responding to the limited classroom time for PAI in meeting the targeted PAI objectives through co-curricular programs to optimize these goals. Therefore, the researcher recommends efforts to enhance character formation or moral development through co-curricular activities in public schools and universities.
Penguatan Pendidikan Agama Islam di luar kelas dapat menggunakan kegiatan kokurikuler guna memastikan tercapainya tujuan pembelajaran yang esensial yaitu mengembangkan potensi keimanan, ketakwaan, dan akhlak mulia mahasiswa. Penelitian ini bertujuan untuk menganalisis peran Tutorial dalam meningkatkan amaliah keshalihan mahasiswa di kampus UPI. Sehingga, penelitian ini penting karena dapat memberikan solusi untuk mengatasi kekurangan jam pelajaran di kelas. Metode penelitian ini adalah kualitatif dengan responden Ketua Penyelenggara Tutorial, Dosen, Tutor, dan peserta PAI. Pengumpulan data dilalukan melalui wawancara, observasi, dan dokumentasi. Analisis data meliputi reduksi, penyajian, verifikasi, dan penarikan kesimpulan. Hasil penelitian ini menunjukan bahwa penguatan amaliah keshalihan dilakukan melalui teladan, anjuran, suruhan dan perintah, latihan, hadiah dan sejenisnya. Materi yang diajarkan adalah yang berkaitan dengan Habluminallah, Habluminannas, dan Hablumin al-alam. Kemudian, karakter religius yang dibentuk adalah menguatkan komitmen religius individu ke dalam peribadatan atau praktek agama (the ritualistic dimension) dan menguatkan komitmen religius individu ke dalam dimensi effect atau pengalaman.Penelitian ini berimplikasi pada pentingnya merespon keterbatasan waktu PAI di kelas dalam memenuhi kebutuhan beban yang ditargetkan oleh PAI melalui program kokurikuler untuk mengoptimalkan tujuan secara optimal. Sehingga, peneliti merekomendasikan dilaksanakannya upaya peningkatan pembentukan karakter atau pembentukan akhlak melalui kegiatan kokurikuler di sekolah-sekolah umum dan perguruan tinggi umum
Keterlibatan perempuan dalam ketakmiran masjid: Studi kasus pada Masjid Darussalam Potorono Banguntapan Bantul Daerah Istimewa Yogyakarta
No full textPenelitian tentang keterlibatan perempuan dalam ketakmiran atau kepemimpinan masjid merupakan suatu hal menarik untuk mendapatkan perhatian. Secara faktual, bahwa keterlibatan Perempuan selama ini sekadar membantu, atau bahkan pelengkap untuk suatu kegiatan ketakmiran atau kemasjidan. Bahkan jenis pekerjaan seperti konsumsi dan cuci piring dan lain sebagainya, di "brokerkan" kepada perempuan (baca: ibu-ibu jamaah masjid) untuk di selesaikan dengan baik. Semua pekerjaan itu dilakukan dengan suka cita tanpa ada "protes atau perlawanan" yang berarti. Nilai keikhlasan inilah yang seringkali disalahgunakan oleh pihak lain untuk terus --tanpa di sadari --menempatkan perempuan dalam situasi yang tidak menentu. Padahal literasi Islam jelas menyebutkan "setara di hadapan Tuhan". Kesetaraan inilah yang menjadi barang langka untuk dimunculkan kembali ke permukaan. Menggunakan pendekatan fenomenologis, penelitian ini berikhitar melihat dan menemukan bukti empirik keterlibatan perempuan dalam ketakmiran masjid yang mencakup tanggungjawab, hak dan norma. Adapun eksplorasi rincinya berkaitan tentang pengalaman, peran, kontribusi perempuan sebagai fakta tak terbantahkan dalam sebuah ketakmiran masjid. Melalui penelitian semacam ini, diharapkan mampu men-display keterlibatan perempuan secara empirik, sehingga manfaat yang dapat diperoleh bagi masyarakat terlebih jemaah masjid bahwa mengurus tempat ibadah merupakan tanggungjawab bersama di dalam memakmurkan masjid sebagai tempat ibadah umat Islam. The study of women's involvement in mosque management and leadership is an intriguing subject that warrants greater attention. Women's participation has often been limited to supporting roles or merely complementing mosque activities. Tasks such as food preparation, dishwashing and other logistical duties are frequently delegated to women (often referred to as "ibu-ibu jamaah masjid") with the expectation that they will carry them out diligently and without objection. Others often misused this notion of sincerity and willingness, unconsciously placing women in uncertain and subordinate positions. However, Islamic teachings clearly emphasise the principle of equality before God. This fundamental value of equality has become increasingly rare in practice and needs to be brought back to the forefront. This study uses a phenomenological approach to observe and uncover empirical evidence regarding women's involvement in mosque management, focusing on their responsibilities, rights, and normative roles. The research explores women's experiences, roles, and contributions as undeniable facts within mosque administration. Through this study, it is hoped that women's participation can be empirically displayed, providing society particularly mosque congregants- with a better understanding that managing a place of worship is a collective responsibility in ensuring the prosperity of the mosque as a centre of Islamic worship
A reflective study on the use of the one day one color method in memorizing the Quran
No full textThe declining interest and consistency in memorizing the Quran among younger generations pose a serious challenge amidst digital disruption and academic pressure. This study reflects on the experiences of participants in the One Day One Color (O.D.O.C) program, a Quranic memorization method based on daily targets and visualized progress, designed to foster discipline and measurable spiritual engagement. A descriptive qualitative approach was employed using in-depth interviews with participants who had completed the program, to explore the cognitive, affective, and spiritual impacts of this method. The findings indicate that O.D.O.C effectively facilitates the formation of long-term memory structures, enhances intrinsic motivation, and strengthens emotional connections with Qur’anic verses. Although there is a decline in memorization intensity after the program ends, most participants demonstrate continued effort by adjusting their rhythm, integrating alternative methods, and leveraging technology. Memorization also serves as a reflective tool, a reinforcement of religious identity, and a form of emotional therapy. In conclusion, the O.D.O.C method is not only technically relevant but also has a transformative impact on character and spiritual development. Its success is contingent upon post-program support, including community engagement, strategic flexibility, and adaptive digital systems. This study recommends O.D.O.C as a promising methodological innovation in contemporary Qur’anic education
Power Consumption Analysis and Evaluation of Energy Saving Potential of Lighting System in DEF Building
No full textThis study aims to analyze power consumption and evaluate the potential energy savings of the lighting system in the DEF Building, which has various room functions including offices, laboratories, meeting rooms, and libraries. The study was conducted with a descriptive quantitative approach based on field measurement data. Data collection includes measuring lighting intensity (lux), inventory of types and number of lamps, and power consumption (watt). The measurement results were compared with the Indonesian National Standard SNI 6197:2020 to assess the minimum lighting level and maximum power limit. In addition, a simulation of replacing conventional lamps with LED lamps was carried out using Dialux Evo software. The results showed that most rooms had power consumption per square meter that was still efficient (<12 W/m²), but many rooms did not meet the minimum lighting standards. The simulation of replacing lamps with LEDs resulted in significant power savings, with a total reduction in energy consumption of 928.93 kWh per month or equivalent to electricity cost savings of around Rp1,362,997.48. Replacing lamps was also able to improve the quality of lighting in rooms that previously did not meet the standards. This study shows that effective lighting system management through LED lamp retrofitting can be an important strategy in supporting building energy efficiency