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INDONESIA
JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN
Published by Universitas Negeri Yogyakarta
ISSN : 25487590     EISSN : 25487590     DOI : -
Core Subject : Education, Social, Engineering,
Education Mechanical Engineering Social Sciences
Jurnal Dinamika Vokasional Teknik Mesin (JDVTM) is published by the Department of Mechanical Engineering Education, Faculty of Engineering, State University of Yogyakarta. The journal is published twice a year in April and October. Each publication contains articles comprising high quality theoretical and empirical original research papers, review papers, and literature reviews. The scope of study of this journal includes mechanical engineering education, technology and vocational education, learning and curriculum development, learning method development, and learning media. All of the fields study, particularly in mechanical engineering vocational and education. The articles submitted should be attended to the particular topics above.
Arjuna Subject : -
Articles 185 Documents
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Analisis Aspek Kesehatan dan Keselamatan Kerja di Laboratorium Motor Bakar Adhan Efendi; Yohanes Sinung Nugroho; Muhammad Fahmi
Jurnal Dinamika Vokasional Teknik Mesin Vol. 5 No. 1 (2020): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.121 KB) | DOI: 10.21831/dinamika.v5i1.30989

Abstract

This study aims at hazard identification and risk assessment in an effort to prevent work accident at the Subang State Polytechnic's Combustion Engine Laboratory. This research is a qualitative-descriptive study with an observation stage using the hazard identification and risk assessment (HIRA) methods. Data were analyzed using Australian Standard/New Zealand Standard (AS/NZS) measurements. Conclusions from the results are: (1) occupational health and safety have not been implemented optimally in the Combustion Engine Laboratory; (2) 9 hazards were found in the laboratory consisted of 1 hazard in the H (high) category, 2 hazards in the M (moderate) category, and 6 hazards in the L (low) category, but none were in the extremely danger category; (3) recommended actions to be taken to reduce the danger in the laboratory are defining laboratory standard operating procedure, rearrangement of laboratory layout and equipment, and briefing students with clear instructions before and after practical work.Penelitian ini bertujuan untuk mengidentifikasi bahaya dan menilai risiko, harapannya dapat mencegah terjadinya kecelakaan kerja di Laboratorium Motor Bakar Politeknik Negeri Subang. Penelitian ini merupakan penelitian deskriptif kualitatif dengan tahap observasi menggunakan metode hazard identification and risk assessment (HIRA). Data selanjutnya dianalisis menggunakan pengukuran yang digunakan dalam Australian Standard/New Zealand Standard (AS/NZS). Hasil penelitian dapat disimpulkan bahwa: (1) penerapan kesehatan dan keselamatan kerja (K3) di Laboratorium Motor Bakar belum optimal; (2) ditemukan 9 bahaya (hazard) di Laboratorium Motor Bakar yang terdiri dari 1 bahaya dalam kategori H (high), 2 bahaya dalam kategori M (moderate), dan 6 bahaya dalam kategori L (low) namun tidak ada yang masuk dalam kategori bahaya ekstrem; (3) rekomendasi tindakan yang dapat dilakukan untuk mengurangi bahaya di Laboratorium Motor Bakar yaitu pembuatan SOP laboratorium, penataan kembali tata ruang dan peralatan, serta pemberian instruksi sebelum dan sesudah praktikum kepada mahasiswa.
Penguasaan Komunikasi, Disiplin, dan Kerja Sama Melalui Praktik Kerja Industri Bidang Manufaktur oleh Siswa Kelas XII Teknik Pemesinan SMK Negeri 3 Yogyakarta Teguh Raharjo; Putut Hargiyarto
Jurnal Dinamika Vokasional Teknik Mesin Vol. 5 No. 2 (2020): Oktober
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v5i2.34785

Abstract

This study aims to determine the communication skills, discipline, and teamwork of students after carrying out industrial work practices in the manufacturing sectors, and to study the implementation of the industrial work practices. The studied subjects are the students of class XII in the engineering expertise program of SMK Negeri 3 Yogyakarta. This research is a combination research type with a sequential explanatory strategy model with quantitative and qualitative data. Data were collected using interviews and documentation.  The sampling techniques used are purposive sampling and snowball sampling with a sample of 76 students and one internship supervisor. Data analysis techniques used quantitative descriptive statistics, data frequency distribution, analysis of variable indicators, and qualitative analysis of interview results. The results showed that students' communication ability was classified as "good" with an accomplishment score of 78%, discipline was classified as "very good" with an achievement score of 85%, and student teamwork was classified as "very good" with an implementation score of 82%, and the implementation of industrial work practices was classified as "good" with a value of 83 %.Penelitian ini bertujuan untuk mengetahui kemampuan komunikasi, disiplin, dan kerja sama siswa kelas XII program keahlian Teknik Pemesinan SMK Negeri 3 Yogyakarta setelah melaksanakan kegiatan praktik kerja industri (prakerin) pada bidang manufaktur serta mengetahui pelaksanaan praktik kerja industri. Jenis penelitian ini adalah penelitian kombinasi dengan model strategi eksplanatoris sekuensial yang memiliki data berupa kuantitatif dan kualitatif. Metode pengumpulan data menggunakan angket, wawancara, dan dokumentasi serta teknik sampling yang digunakan adalah sampling purposive dan snowball sampling dengan sampel sebanyak 76 siswa dan 1 guru pembimbing prakerin. Teknik analisis data menggunakan statistik deskriptif kuantitatif, distribusi frekuensi data, analisis indikator variabel, dan analisis kualitatif hasil wawancara. Hasil penelitian menunjukkan bahwa kemampuan komunikasi siswa tergolong baik dengan nilai keterlaksanaan sebesar 78%, kemampuan disiplin tergolong sangat baik dengan nilai keterlaksanaan sebesar 85%, dan kemampuan kerja sama siswa tergolong sangat baik dengan nilai keterlaksanaan sebesar 82%, serta pelaksanaan praktik kerja industri tergolong baik/efektif dengan nilai keterlaksanaan sebesar 83%.
Pengaruh Parameter Pemakanan Terhadap Kekasaran Permukaan ST 40 pada Mesin Bubut CNC Ahmad Fauzi; Wirawan Sumbodo
Jurnal Dinamika Vokasional Teknik Mesin Vol. 6 No. 1 (2021): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v6i1.38114

Abstract

Material ST 40 yang digunakan dalam pembuatan poros roda mobil listrik, harus memiliki kekasaran permukaan yang baik. Karena poros nantinya akan dirangkai pada komponen lain yaitu bearing. Tujuan penelitian ini yaitu untuk mengetahui dan menganalisis pengaruh kecepatan potong, kecepatan asutan, dan kedalaman pemakanan terhadap kekasaran permukaan dengan menggunakan mesin bubut CNC. Metode penelitian ini menggunakan metode eksperimen. Variasi kecepatan potong yang diteliti yaitu 90, 120, 150 m/menit. Kecepatan asutan 0,15; 0,2; 0,25 mm/rev. kedalaman pemakanan 0,25; 0,5; 0,75 mm. penelitian ini menggunakan bahan ST 40, pahat CNMG 120408-MA, dan mesin bubut CNC Fanuc Oit Leadwell. Nilai rata-rata kekasaran permukaan paling baik diperoleh pada interaksi variabel kecepatan potong 150 m/menit, kecepatan asutan 0,15 mm/rev dan kedalaman pemakanan 0,25 mm sebesar 1,034 μm. Dan kekasaran permukaan paling kasar diperoleh pada interaksi variabel kecepatan potong 90 m/menit, kecepatan asutan 0,25 mm/rev, dan kedalaman pemakanan 0,75 mm sebesar 10,594 μm.An electric car wheel axle using ST 40 materials must have good surface roughness due to its contact with bearings. This study aims to identify and analyze the effect of cutting speed, feed rate, and depth of cut on the surface roughness of the axle machined using a CNC lathe. The research employs an experimental method. The varied machining parameters are cutting speeds (90, 120, 150 meters per minute), feed rate (0.15, 0.2, 0.25 mm/rev) and depth of cut (0.25, 0.5, 0.75 mm). This study uses ST 40 material, CNMG 120408-ma cutting tool, and CNC Fanuc OiT lathe. The best result of average surface roughness value is 1,034 μm (lower is better), obtained at a variable interaction of 150 m/min cutting speed, feed rate of 0.15 mm/rev, and depth of cut 0.25 mm.
Pengembangan Bahan Ajar pada Mata Kuliah Perawatan dan Perbaikan Mesin di Pendidikan Vokasional Aan Ardian; Febrianto Amri Ristadi; Victor Elisananda
Jurnal Dinamika Vokasional Teknik Mesin Vol. 6 No. 1 (2021): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v6i1.39542

Abstract

Penelitian ini bertujuan untuk: (1) Menghasilkan produk media bahan ajar yang sesuai dengan kebutuhan Jurusan Pendidikan Teknik Mesin Universitas Negeri Yogyakarta, (2) Mengetahui kelayakan  bahan ajar mata kuliah Perawatan dan Perbaikan Mesin Jurusan Pendidikan Teknik Mesin Universitas Negeri Yogyakarta. Peneliti menggunakan penelitian pengembangan Research and Development (R&D). Subjek penelitian dan pengembangan bahan ajar ini yaitu 4 dosen ahli materi, 4 dosen ahli media, dan 46 mahasiswa Jurusan Pendidikan Teknik Mesin Universitas Negeri Yogyakarta. Penelitian ini menghasilkan produk bahan ajar mata kuliah Perawatan dan Perbaikan Mesin Jurusan Pendidikan Teknik Mesin. Bahan Ajar mata kuliah Perawatan dan Perbaikan Mesin ini dinyatakan layak berdasarkan penilaian produk yang rerata keseluruhan mendapat nilai 3,35 dengan klasifikasi "Sangat Baik". This paper reports a study that examined the design and evaluation process of a learning object material (LOM) in Machinery Maintenance and Repair. The study's main objective is: (1) to develop a LOM that is most suitable for the Mechanical Engineering Education study program and (2) to evaluate the LOM per the Study Program's requirements. The study implements the Research and Development method. Research Subjects are material experts comprising 4 lecturers, four learning media experts, and 46 students. The research output is a LOM for Machinery Maintenance and Repair qualified for teaching and learning in the Mechanical Engineering Study Program. The study's results suggested that the LOM is suitable and classified as "Very Good," averaging a total point of 3,35.
Pengaruh Jenis Oli Bekas Sebagai Bahan Bakar Kompor Pengecoran Logam Terhadap Waktu Konsumsi dan Suhu Maksimal pada Pembakaran Alif Rivan Hidayat; Basyirun Basyirun
Jurnal Dinamika Vokasional Teknik Mesin Vol. 5 No. 2 (2020): Oktober
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v5i2.34802

Abstract

This study aims to determine the influence of distance traveled of used oil on fuel consumption rate and its maximum combustion temperature. In terms of consumption rate, used oil combustion tends to be slow because it must reach a certain point in order to burn. The maximum combustion temperature of used oil is comparable to other ordinary fuels, and it is suitable for use in metal casting. The study concluded that the longer the distance traveled, the faster the fuel consumption rate required. Used oil of 2200 km distance traveled is the fastest to burn, 0.8 liters in 745 seconds. The slowest to burn is the one with a distance traveled of 1800 km, which burns in 1031 seconds. The farther the distance traveled yields in a lower combustion temperature reached. At a distance traveled of 1800 km, the maximum temperature is 963.3 °C, while at 2200 km, the maximum temperature is 797.5 °C.Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh jenis oli bekas terhadap waktu konsumsi bahan bakar dan suhu maksimal pada pembakaran oli bekas. Ditinjau dari segi kecepatan konsumsi bahan bakar, pembakaran oli bekas konsumsinya cenderung lambat karena oli bekas harus mencapai titik tertentu agar dapat terbakar. Ditinjau dari suhu maksimal yang dihasilkan mampu bersaing dengan kompor – kompor dengan bahan lainya dan juga untuk ukuran kompor pengecoran logam sudah memadahi. Pada penelitian tersebut, dapat disimpulkan bahwa semakin jauh jarak tempuh maka semakin cepat/ rendah waktu konsumsi bahan bakar yang diperlukan. Jarak 2200 km merupakan waktu tercepat untuk menghabiskan 0,8 liter oli bekas dengan waktu 745 detik. Sementara waktu terlama yaitu 1031 detik pada jarak 1800 km. semakin jauh jarak tempuh maka suhu maksimal yang dihasilkan semakin rendah. Pada jarak 1800 km menghasilkan suhu maksimal mencapai 963,3 OC, sementara jarak 2200 km hanya mampu menhasilkan suhu maksimal sebesar 797,5  OC.
Pengaruh Suhu dan Waktu Proses Hard Chrome pada Pelat Baja ST37 Terhadap Kekerasan dan Ketebalan Lapisan Bimo Tri Cahyanto; Samsudin Anis
Jurnal Dinamika Vokasional Teknik Mesin Vol. 5 No. 2 (2020): Oktober
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v5i2.34786

Abstract

The thickness and hardness affect the service life of ST37 steels. The temperature and duration of the coating process affect the hard chrome layer's thickness and hardness. The purpose of this study is to determine the effect of temperature and coating duration of the ST37 steel plate using the hard chrome coating method on the thickness and hardness of the coating. This research is an experimental study in which the treatment used is the temperature and duration of the metal plating process with hard chrome. The temperatures used were 45 °C, 50 °C, and 55 °C, and the coating time was 10 minutes, 20 minutes, and 30 minutes. After the hard chrome plating process is complete, the thickness and hardness of each specimen were tested. This research uses descriptive analysis. The results obtained from the thickness test are the highest average layer thickness of 8.9 µm at 45 °C, 9.1 µm at 50 °C, and 9.2 µm at 55 °C, respectively. The coating hardness test result shows an average value of 323.28 VHN at 45 °C, 333.01 VHN at 50 °C, and 466.51 VHN at 55° C, respectively. It can be concluded that the duration of the metal plating process with the controlled temperatures proportionally affects the thickness and hardness of the coating.Ketebalan dan kekerasan berpengaruh terhadap masa pakai logam baja ST37. Suhu dan lama proses pelapisan mempengaruhi tingkat ketebalan dan kekerasan lapisan hard chrome. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh suhu dan lama pelapisan pelat baja ST37 menggunakan metode pelapisan hard chrome terhadap ketebalan dan kekerasan lapisan. Penelitian ini merupakan penelitian eksperimen di  mana perlakuan yang digunakan adalah suhu dan lama proses pelapisan logam dengan hard chrome. Suhu yang digunakan adalah 45°C, 50°C, dan 55°C, dan lama pelapisannya yaitu 10 menit, 20 menit, dan 30 menit. Setelah proses pelapisan hard chrome selesai, selanjutnya dilakukan pengujian ketebalan dan kekerasan lapisan pada masing-masing spesimen. Analisis yang digunakan pada penelitian ini adalah analisis deskriptif. Hasil yang didapatkan dari pengujian ketebalan yaitu menghasilkan nilai rata-rata ketebalan lapisan tertinggi sebesar 8,9µm pada suhu 45°C, 9,1 µm pada suhu 50°C, dan 9,2 µm pada suhu 55°C. Hasil pengujian kekerasan lapisan yang didapatkan yaitu menghasilkan nilai rata-rata sebesar 323,28 VHN pada suhu 45°C, 333,01 VHN pada suhu 50°C, dan 466,51 VHN pada suhu 55°C. Dapat disimpulkan bahwa semakin lama proses pelapisan logam dengan suhu 45°C, 50°C, dan 55°C maka ketebalan dan kekerasan lapisan akan bertambah.
Pengaruh Penambahan Unsur Aluminium Murni pada Bahan Aluminium Scrap Terhadap Ketangguhan Impak dan Struktur Mikro Hasil Pengecoran Velg Motor Honda Ahmad Dahlan; Rusiyanto Rusiyanto
Jurnal Dinamika Vokasional Teknik Mesin Vol. 6 No. 1 (2021): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v6i1.36643

Abstract

Tujuan penelitian ini adalah untuk megetahui pengaruh penambahan aluminium murni pada bahan aluminium scrap terhadap ketangguhan impak dan struktur mikro. Paduan yang digunakan nantinya adalah scrap dengan penambahan unsur aluminium murni yang divariasikan. Presentase komposisi didapatkan dari perbandingan unsur aluminium pada velg sepeda motor original market sebesar 92% dan scrap sebesar 81%. Varian material yang diteliti adalah variasi penambahan aluminium sebesar 4%, 8% dan 12%, serta material velg sepeda motor. Sering dikeluhkan karena mengalami beban kejut dan retak karena benturan. Proses pembuatan menggunakan peleburan dengan penambahan aluminium murni. Selanjutnya hasil peleburan diuji secara mekanis menggunakan pengujian kekuatan impak dan stuktur nikro dengan standart ASTM. Hasil dari pengujian diperoleh bahwa penambahan unsur aluminium 12% pada scrap memiliki kekuatan impak terbesar yaitu 0.0347 J/mm2dibandingkan dengan velg sepeda motor sebesar 0,0336 J/mm2. Aluminium yang ditambahkan berfungsi untuk memberikan sifat keuletan pada suatu material sehingga mempengaruhi perubahan sifat mekanis. Terlihat pada hasil struktur mikro memiliki fasa eutetik yang semakin rapat dan hampir memiliki kesamaan dengan velg sepeda motor. Dapat disimpulkan bahwa penambahan aluminium mampu mempengaruhi kekuatan impak yang menyebabkan kerapatan fasa aluminium silikon pada material.This study aimed to determine the effect of pure aluminum addition to aluminum scrap material on impact toughness and microstructure. This experiment studied an alloy of scrap aluminum and the addition of pure aluminum into it in various amounts. A spectrotest yields the aluminum element composition is 92% on the original motorcycle rim and 81% on the scrap aluminum. The studied variation of pure aluminum addition is 4%, 8%, and 12%. The manufacturing process uses smelting, and pure aluminum was added during the process.  The smelting products were tested mechanically using impact strength and microstructure according to ASTM standard.  The results show that the highest impact strength is from the addition of 12% pure aluminum. The impact strength is 0.0347 J/mm2, compared to the original motorcycle rim of 0.0336 J/mm2. The added aluminum serves to provide ductility to the alloy, increasing its mechanical properties. Test results show that the microstructure has an increasingly tight eutectic phase and has almost the same characteristics as the original motorcycle rim.  It can be concluded that the addition of aluminum affects the impact strength, in which it causes a dense aluminum-silicon phase of the material.
Pengaruh Masukan Udara Bertingkat pada Proses Gasifikasi Pelepah Kelapa Sawit Terhadap Distribusi Temperatur dan Kandungan Tar Abdul Gafur; Bambang Sudarmanta; Arif Rahman Saleh
Jurnal Dinamika Vokasional Teknik Mesin Vol. 6 No. 1 (2021): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v6i1.34288

Abstract

Indonesia memiliki banyak daun kelapa sawit yang berlimpah tetapi kurang dimanfaatkan. Mempertimbangkan pasokan yang besar dan konsisten, daun kelapa sawit dapat menjadi sumber energi biomassa yang menjanjikan melalui proses gasifikasi. Salah satu masalah yang paling menantang mengenai gasifikasi daun kelapa sawit adalah keberadaan tar. Tulisan ini menyajikan studi eksperimental gasifikasi biomassa pelepah kelapa sawit di reaktor downdraft dengan tahap pasokan udara bertingkat. Metode yang digunakan dalam penelitian ini adalah metode eksperimen, dengan menggunakan variabel tetap berupa distribusi suhu dan kandungan tar, sedangkan variabel bebasnya berupa masukan udara/rasio udara (AR)  disetiap tingkatan oksidasi dan pirolisis. Bahan bakar dimasukkan melalui hopper hingga batas drying kemudian ID fan dinyalakan dan api juga mulai dinyalakan. Setelah tercapai kondisi stady state maka dimulai pengambilan data dengan memvariasikan masukan udara di pirolisis dan oksidasi, distribusi suhu diperoleh dari termokopel tipe K yang dipasang disetiap tingkatan dan kandungan tar diperoleh dengan menggunakan metode brandt. Hasil penelitian menunjukkan bahwa pengaruh masukan udara bertingkat terhadap distribusi suhu disepanjang ketinggian reaktor menunjukkan peningkatan suhu yang signifikan yaitu suhu di zona pirolisis mencapai 590 0C yang juga berpengaruh pada peningkatan yang signifikan pada zona oksidasi sebesar 827 0C. Hasil yang sama juga diperlihatkan pada hasil kandungan tar yang diperoleh kandungan terendah sebesar 37,0 mg/m3. Hasil ini memperlihatkan kandungan tar turun ketika diberikan udara bertingkat pada zona pirolisis. Indonesia has abundant but underutilized oil palm fronds (OPF). Considering its ample and steady supply, OPF could be a promising source of biomass energy through gasification. One of the most challenging issues concerning the gasification of OPF is the presence of tar. This work presents an experimental study of wood biomass gasification in a moving bed downdraft reactor with two-air supply stages. The method used in this study was experimental, using temperature distribution and tar content as fixed variables and input air ratio (AR) at each level of oxidation and pyrolysis as independent variables. The fuel was fed through a hopper to the drying limit. An ID fan was then turned on, and the fire started simultaneously. Data collection was begun by varying the air intake in pyrolysis and oxidation after reaching the steady-state condition. The temperature distribution was obtained from type K thermocouple installed at each level, and the tar content was obtained using the Brandt method. The results showed that the effect of multistage air input on the temperature distribution along the reactor's height showed a significant increase in temperature. The pyrolysis zone temperature reached 590 °C, which affected a considerable temperature increase in the oxidation zone of 827 °C. The same results are also shown in the tar content results obtained by the lowest content of 37.0 mg/m3. These results show that the tar content decreases when given gradual air input in the pyrolysis zone.
Desain Portable Android Thermometer Fever (Prometer): Termometer Non-Kontak Praktis Berbasis Android Bima Agung Setyawan; Tiar Agustianto; Syukri Fathudin Achmad Widodo
Jurnal Dinamika Vokasional Teknik Mesin Vol. 5 No. 2 (2020): Oktober
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v5i2.34787

Abstract

Vocational education plays an essential role in the corona pandemic case because it is a direct benchmark for applying science to a cultured society's environment. One of the applications is the development of tools to prevent the spread of COVID-19. The idea arises from the fact that gun thermometers, which are a vital tool to prevent pandemic spread, were scarce and expensive. The proposed solution was to develop a device called Portable Android Thermometer Fever (PROMETER), a suitable non-contact thermometer based on Android. The method was research and development.  Data were analyzed using a qualitative descriptive approach. From the study results, it can be concluded that the PROMETER can be used as an accurate and practical gun-type thermometer.Pendidikan kejuruan mengambil peran penting dalam kasus pandemi corona karena pendidikan kejuruan menjadi tolak ukur pengaplikasian langsung ilmu-ilmu untuk dapat dimanfaatkan dalam lingkungan masyarakat yang berbudaya. Salah satu pengaplikasian ilmu teknologi dalam pendidikan kejuruan yakni dengan pembuatan alat atau sistem sebagai bentuk solusi pencegahan penyebaran covid-19. Dari studi kasus tentang kelangkaan dan mahalnya termometer tembak yang menjadi alat penting dalam penanganan kasus penyebaran covid-19 didapat suatu gagasan desain alat yang diberi nama Portable Android Thermometer Fever (PROMETER): Termometer  Non-Kontak Praktis Berbasis Android Sebagai Alat Pemantau Suhu Badan Dalam Penanggulangan Penyebaran Covid-19. Bentuk penelitian ini adalah research and development. Dari data hasil penelitian diperoleh data yang dianalisis secara kualitatif deskriptif. Dari hasil penelitian dapat ditarik kesimpulan bahwa Portable Android Thermometer Fever (Prometer)dapat digunakan sebagai termometer tembak yang akurat dan praktis.
The Effect of Students' Learning Activities and Creativity on The Learning Outcomes in The Aerodynamics Tri Adi Prasetya; Chrisna Tri Harjanto; Angga Debby Frayudha
Jurnal Dinamika Vokasional Teknik Mesin Vol. 6 No. 1 (2021): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v6i1.37035

Abstract

Vocational education aims to prepare students to acquire knowledge and skills as provisions for work. The involvement of all aspects of students, both physical and spiritual, is needed to achieve the learning objectives. It shows that each student must be actively involved in the learning process. Creativity is an essential component of learning and problem-solving. Creative learning is related to cognitive development and the process of discovering and creating something new. This research was conducted to determine the effect of student learning activities and student creativity on learning achievement, both independently and simultaneously. The subjects of this study were students of class XI AP2 SMK Bina Dhirgantara Karanganyar. The data collection technique used tests and observations. Data analysis techniques used simple regression for the first and second hypotheses (independent effect) and multiple regression analyses for the third hypothesis (simultaneous effect). The results showed that student learning activities significantly affect learning achievement with a value of t arithmetic of 3.909, a higher value than the t table of 1.69. Student creativity significantly affects learning achievement, with the t arithmetic value of 4.281, higher than the t table of 1.69. The multiple regression analysis results showed that the coefficient of determination X1 and X2 against Y was 0.477 or 47.7%. It shows that the variables of student learning activities and student creativity have a contributing influence on learning achievement.

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