UNY Journal (Universitas Negeri Yogyakarta)
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DESAIN DAN ANALISIS TELESKOPIK SILINDER HIDROLIK PADA MESIN PRES HIDROLIK MOBILE
No full textPenelitian ini mengeksplorasi desain dan analisis dari silinder teleskopik hidrolik yang digunakan pada mesin press hidrolik mobile, yang memfokuskan pada peningkatan mobilitas dan efisiensi operasional. Melalui penerapan Analisis Elemen Hingga (FEA), studi ini mengidentifikasi parameter kritis seperti tegangan, regangan, dan faktor keamanan dalam kondisi operasional yang beragam. Penelitian ini mendemonstrasikan bagaimana desain teleskopik dapat mengatasi tantangan khusus dalam operasi mesin press hidrolik, termasuk peningkatan jangkauan operasi dan penyesuaian terhadap beban kerja yang dinamis. Dari analisis yang dilakukan, ditemukan bahwa silinder mengalami tegangan maksimum 599,51 MPa dan regangan maksimum 0,0030939 mm/mm di bagian tengah, yang menyarankan adanya kebutuhan untuk modifikasi desain atau peningkatan material untuk meningkatkan keandalan dan durabilitas. Sementara itu, faktor keamanan yang tinggi di sebagian besar area menunjukkan bahwa desain keseluruhan memiliki keandalan yang baik. Studi ini memberikan wawasan yang bermanfaat bagi insinyur dan desainer mesin dalam mengoptimalkan desain silinder hidrolik teleskopik dan menyarankan area-area penelitian yang dapat dijelajahi untuk pengembangan lebih lanjut, seperti penggunaan material inovatif dan teknik manufaktur canggih. Hasil dari penelitian ini dapat digunakan untuk memandu pengembangan mesin press hidrolik mobile yang lebih efisien dan adaptif dalam menghadapi kebutuhan industri modern
IMPLEMENTASI COOPERATIVE LEARNING TIPE TGT UNTUK MENINGKATKAN HASIL BELAJAR KOMPETENSI CVT SISWA KELAS XI TSM DI SMK NASIONAL MALANG
No full textPenelitian ini dilakukan dengan tujuan untuk mengoptimalkan pencapaian hasil belajar siswa kelas XI TSM di SMK Nasional Malang pada kompetensi Continuously Variable Transmission (CVT) melalui penerapan model pembelajaran Cooperative Learning tipe Team Games Tournament (TGT). Metode yang digunakan dalam penelitian ini adalah Penelitian Tindakan Kelas (PTK), yang dilaksanakan dalam dua siklus dengan tahapan meliputi perencanaan, pelaksanaan tindakan, observasi, serta refleksi pada masing-masing siklus. Temuan penelitian mengindikasikan adanya peningkatan signifikan dalam pencapaian belajar siswa; nilai rata-rata yang semula 51 pada pra-siklus meningkat menjadi 73 pada siklus pertama, dan mencapai 82 pada siklus kedua, melampaui Kriteria Ketuntasan Kompetensi Program (KKTP) yang telah ditetapkan yaitu 75. Model TGT terbukti mampu membangun atmosfer belajar yang interaktif, menggembirakan, dan mendorong kerjasama tim dan motivasi siswa melalui kompetisi yang sehat. Penggunaan model pembelajaran TGT direkomendasikan dalam penelitian ini sebagai cara efektif untuk meningkatkan pemahaman konsep teknis seperti CVT dalam lingkungan SMK.
Kata kunci: Kompetensi CVT, Cooperative Learning TGT, Hasil Belajar, SM
UPAYA MENINGKATKAN KEAKTIFAN BERTANYA SISWA MELALUI METODE BERTANYA SECARA TERTULIS DALAM MODEL INQUIRY LEARNING PADA MATA PELAJARAN DDO SISWA KELAS X TSM 1 DI SMKN 9 MALANG
No full textPenelitian ini dilakukan dengan tujuan untuk meningkatkan keaktifan bertanya siswa melalui penerapan metode bertanya secara tertulis menggunakan padlet dalam model Inquiry Learning pada Elemen Peralatan dan Pelengkapan Tempat Kerja mata pelajaran Dasar-Dasar Otomotif siswa Kelas X TSM 1 di SMKN 9 Malang. Metode yang digunakan dalam penelitian ini yaitu Penelitian Tindakan Kelas (PTK), yang dilaksanakan dalam dua siklus dengan tahapan setiap siklus meliputi perencanaan, pelaksanaan tindakan, observasi, serta refleksi. Temuan penelitian mengindikasikan adanya peningkatan signifikan keaktifan bertanya siswa; skor rata-rata 2,45 dengan presentase 12,26% pada tahap pra tindakan meningkat menjadi 6,42 dengan presentase 32,10% pada siklus 1, dan mencapai 13,23 dengan presentase 66,13% pada siklus 2 yang mana sudah masuk dalam kualifikasi aktif. Penerapan metode bertanya secara tertulis menggunakan padlet dalam model Inquiry Learning terbukti mampu meningkatkan keaktifan bertanya siswa dalam proses pembelajaran. Penerapan metode bertanya secara tertulis menggunakan padlet dalam model Inquiry Learning direkomendasikan dalam penelitian ini sebagai cara efektif untuk meningkatkan keaktifan bertanya siswa dalam proses pembelajaran di lingkungan SMK.
PENGEMBANGAN KEMITRAAN TRIPLE-HELIX DALAM PENYIAPAN GURU VOKASIONAL
No full textPendidikan guru vokasional (pre-service) merupakan fondasi utama dalam menyiapkan calon pendidik yang kompeten untuk mengajar di bidang kejuruan. Penyiapan guru vokasional saat ini membutuhkan adanya suatu konsep ataupun model penyiapan guru vokasional yang didasarkan pada kemitraan yang utuh, praktis, efektif, dan efisien. Penelitian ini bertujuan untuk menghasilkan model penyiapan guru vokasional yang didasarkan pada kemitraan. Penelitian ini menggunakan pendekatan kualitatif dengan metode Focus Group Discussion (FGD) dengan jumlah peserta antara 10 orang yang berasal dari Perguruan Tinggi LPTK, SMK dan DUDI. Hasil FGD tersebut menemukan konsep Model Penyiapan Guru Vokasional berbasis kemitraan Triple Helix dengan mensinergikan LPTK, DUDI dan SMK. Hasil validasi menunjukkan bahwa model memperoleh skor 87,9%, yang berada dalam kategori layak digunakan dengan revisi. Secara keseluruhan, pengembangan model ini memberikan kontribusi signifikan dalam menjembatani dunia pendidikan dengan dunia kerja melalui kemitraan fungsional antara Perguruan Tinggi LPTK, SMK, dan DUDI
Assessing Workplace Readiness of Vocational School Students for Industry 5.0: A Skills Gap Analysis
No full textBackground: The fast-paced growth of the global landscape has triggered significant transformations in various sectors, including education and the workforce. As the world enters the era of Industrial Revolution 5.0, which emphasizes sustainability and human-technology collaboration, it becomes critical for vocational high school (SMK) graduates to possess job skills that align with modern industry demands. However, a persistent skills gap remains between what vocational education delivers and what industries require.
Methods: This study aims to analyse the employability level of vocational high school students in meeting industry demands during the Industrial Revolution 5.0. A quantitative approach was employed using an online survey distributed to 450 vocational students and 40 industry representatives across various sectors in Indonesia. The survey instrument focused on two main job skill dimensions: problem-solving practices and planning and organizing activities. Descriptive statistical analysis (frequency distributions, means, and standard deviations) was conducted, followed by inferential analysis using a t-test to compare students' self-assessments with industry evaluations of job readiness.
Results: The findings revealed that vocational students' skills are currently at a moderate level and have not yet fully met industry expectations. A statistically significant gap was found between student perceptions and industry assessments, indicating a misalignment in readiness levels.
Conclusion: These results highlight a critical employability gap that must be addressed to ensure vocational graduates are better prepared for the evolving workforce. Strengthened collaboration between vocational education institutions and industry is essential. Joint efforts should focus on establishing shared competency standards, enhancing industry-based training programs, and increasing industry participation in curriculum development to improve the alignment between education outcomes and labour market needs
Analysis of Pipe Diameter Variation and Lamp Load on Centrifugal Pump Performance as a Generator Driving Turbine
No full textAs the population grows, the demand for energy increases, especially from non-renewable resources. Many countries are turning to renewable energy sources such as water to meet this demand. Water from a certain height can drive a turbine generator by converting potential energy into mechanical energy in the form of shaft rotation, which is transmitted to the generator and then converted into electrical energy. This study aims to analyse variations in pipe diameter and lamp load on the performance of a centrifugal pump as a turbine driving a generator. The research method was an experiment in which the pipe diameter was varied as 1/2, ¾, 1, and 1.5 inches, and the lamp load was varied as 5, 10, 15, and 20 W. Pump performance includes specific speed, rotor power, and shaft power. The results of this study show that the performance of the centrifugal pump as a driving turbine, the highest is at a pipe diameter of 1.5 inches, which produces a specific speed of 207.59 rpm at a power load of 5 W, rotor power of 2002 watts at a load of 20 W, and shaft power of 9509.50 watts at a load of 20 W. By regression analysis, the highest specific speed was obtained by the formula y=223.16-2.9063x with a correlation coefficient of r=0.989. The rotor power formula was y=57.093+98.045x with a correlation coefficient of r=0.999, while the resulting shaft power formula was y=271.19+465.72x with a correlation coefficient of r=0.999. Thus, a strong positive relationship exists between diameter and lamp load on specific speed, rotor power, and shaft power to generate electrical energy sources in turbine axle pumps
A Study on Health, Safety, Environment, and Ergonomics (HSEE) in Solar Power Plant
Full text linkSolar energy has rapidly developed as a renewable energy source, but the aspects of Health, Safety, Environment, and Ergonomics (HSEE) in their operations have remained a concern. This study analysed the risks faced by workers and the environment at the Pantai Baru solar power plant using a risk analysis approach based on primary data from worker questionnaires and secondary data from literature reviews and field observations. The findings showed that the health aspect included heat stress such as prolonged under direct sunlight and exposure to toxic materials, these materials include heavy metals such as cadmium (Cd) and lead (Pb), which are commonly used in photovoltaic (PV) technology to enhance efficiency but are known to be carcinogenic and hazardous even at low doses. The safety aspect covered electrical hazards, fire hazards, and falling risks, all of which were exacerbated by suboptimal working conditions. From an environmental perspective, solar power plants caused ecosystem damage, required large land areas, and faced challenges in recycling solar panels and batteries. Ergonomic risks were also identified, but the questionnaire results indicated that musculoskeletal injuries were not a significant issue for solar power plant workers. This study concluded that most HSEE sub-variables were relevant to the risks associated with solar power plants, except for musculoskeletal injuries. Therefore, implementing risk mitigation strategies, improving workplace design, and enforcing stricter environmental policies were necessary to ensure safe, efficient, and sustainable solar power plant operations
Adaptasi Authentic Leadership Inventory (ALI) versi Indonesia
Full text linkKepemimpinan otentik merupakan kepemimpinan yang mempromosikan cara kerja sehat secara psikologis dalam membangun iklim kerja positif. Persepsi terhadap kepemimpinan otentik di berbagai budaya dapat berbeda sehingga perlu dikaji lebih lanjut. Akan tetapi, masih terdapat keterbatasan dalam mengakses instrumen kepemimpinan otentik di Indonesia. Oleh karena itu, perlu adanya pengembangan instrumen melalui adaptasi salah satu alat ukur kepemimpinan otentik yaitu Authentic Leadership Inventory (ALI). Proses adaptasi melalui beberapa tahapan yaitu permohonan izin forward translation, sintesis, back translation, back translation review, pilot test, dan field test. Uji lapangan dilakukan secara online menggunakan google form. Partisipan yang terlibat adalah 119 karyawan dengan rentang usia 18-58 tahun. Hasil analisis CFA menunjukkan bahwa ALI dengan model 4 faktor memiliki indeks yang mendekati fit. Reliabilitas ALI versi bahasa Indonesia 0,640-0,738. Perlu adanya uji psikometrik dengan sampel yang lebih besar untuk memperkuat properti psikometri dari ALI versi Indonesia
CELEBRITIES AS LEGISLATORS IN INDONESIA: A CORPUS-ASSISTED DISCOURSE ANALYSIS OF PUBLIC NARRATIVES ON SOCIAL MEDIA X
No full textThis study explores public responses to celebrities elected as members of the Indonesian House of Representatives for the 2019–2024 term. The study adopts a corpus-assisted discourse analysis (CADS), a methodological approach that combines corpus linguistics and critical discourse analysis to identify dominant patterns, lexical features, and thematic structures in large-scale textual data. A dataset of 26,120 tweets mentioning 14 celebrity legislators was collected through data scraping from October 2019 to June 2024. The data were processed using Google Colaboratory and R Studio for cleaning, and analyzed with AntConc to identify linguistic patterns, keywords, and thematic categories. The analysis reveals that discussions are concentrated on a few prominent figures—namely Krisdayanti, Rano Karno, and Eko Patrio highlighting themes such as personal background, lifestyle, legislative activity, and public image. Findings show that public opinion is polarized, with both positive and critical evaluations of celebrity-legislators’ effectiveness and authenticity. This study also highlights the intersection between entertainment and formal politics in Indonesia. Policy implications highlight the need for capacity-building and transparency mechanisms to support celebrity politicians in promoting effective public communication and democratic accountability
THE RECOGNITION AND PROTECTION OF INDIGENOUS PEOPLES’ RIGHTS WITHIN THE FRAMEWORK OF REGIONAL AUTONOMY IN INDONESIA
No full textThis research investigates how Indonesia’s decentralization framework affects the recognition and protection of Indigenous communities’ entitlements. Using qualitative methods with a normative juridical, the research analyzes the prevailing legal provisions (Article 18B (2) of the 1945 Constitution, Law 23/2014, Law 6/2014, Law 41/1999, Law 5/1960), and Regional Regulations. In addition, interviews are used to determine the effectiveness of implementation, selected based on criteria (policy makers, policy implementers, and affected indigenous communities). The informants involved in this research consisted of 17 individuals, including: Head of Wali Nanggroe, Head of Civil Registration Officials, Head of Community Empowerment Services, Head of Sub-District, Head of Village, Head of Traditional Institution, and Traditional Figures.The findings reveal that although Indigenous Peoples are constitutionally recognized, implementation at the regional level still faces various challenges, such as weak harmonization between central and regional regulations, and limited understanding by regional governments regarding the substance of Indigenous rights. Several regional governments have not issued specific regional regulations concerning the recognition of Indigenous Peoples or face obstacles in their implementation. This research recommends the need to strengthen legal policies that support the recognition and protection of Indigenous rights through intergovernmental synergy and the enhancement of institutional capacity at the regional level