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All Journal Voteteknika (Vocational Teknik Elektronika dan Informatika) JTEV (Jurnal Teknik Elektro dan Vokasional TELKOMNIKA (Telecommunication Computing Electronics and Control) JINOP (Jurnal Inovasi Pembelajaran) Jurnal Pendidikan Teknik Mesin JOIV : International Journal on Informatics Visualization Edukasi: Jurnal Pendidikan QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI Mimbar Ilmu International Journal of Educational Dynamics (IJEDS) Ensiklopedia of Journal Edumaspul: Jurnal Pendidikan EDUKATIF : JURNAL ILMU PENDIDIKAN Jurnal Pendidikan dan Keluarga Jurnal Pendidikan Teknologi Informasi dan Vokasional MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering AEEJ : Journal of Automotive Engineering and Vocational Education Jurnal Vokasi Mekanika Ranah Research : Journal of Multidisciplinary Research and Development

Refdinal, Refdinal

Departemen Teknik Mesin, Fakultas Teknik, Universitas Negeri Padang

Author-ID : 1971128

Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Perspektif Pendidikan Karakter Akhlak Mulia pada Perubahan Tingkah Laku Siswa Junil Adri; Ambiyar Ambiyar; Refdinal Refdinal; Muhammad Giatman; Azmil Azman
Edukasi: Jurnal Pendidikan Vol 18, No 2 (2020): Edukasi: Jurnal Pendidikan
Publisher : LPPM IKIP PGRI Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31571/edukasi.v18i2.1845

AbstrakPenelitian bertujuan untuk mendapatkan informasi penerapan pendidikan karakter akhlak mulia sebagai upaya pembentukan karakter siswa. Penelitian menggunakan metode deskriptif kualitatif. Subjek penelitian yaitu siswa jurusan Teknik Mesin SMK Negeri 1 Tanjung Raya Kabupaten Agam Provinsi Sumatera Barat. Pemilihan subjek penelitian didasari kolaborasi penerapan program penanaman nilai rohani yang dilakukan ketua jurusan. Teknik pengambilan data dilakukan dengan observasi dan wawancara. Teknik analisis data menggunakan analisis deskriptif. Hasil penelitian mengungkapkan bahwa program pelaksanaan salat Zuhur berjemaah disambut positif oleh siswa; siswa telah patuh terhadap peraturan yang ada di sekolah; siswa lebih mementingkan perintah orang tua walaupun sedang asyik bermain dengan temannya; siswa memiliki respek terhadap lingkungan masyarakat; dan siswa memiliki jiwa cinta alam dan berbudaya menjaga lingkungan. AbstractThe research aimed to obtain information on the application of moral character education as an effort to build student character. This research used a qualitative descriptive method. The research subjects were students majoring in Mechanical Engineering at SMK Negeri 1 Tanjung Raya Agam Regency, West Sumatra Province. The selection of research subjects was based on collaborative implementation of the spiritual value cultivation program carried out by the head of the department. The data collection technique was carried out by observation and interviews. The data analysis technique used descriptive analysis. The results of the research revealed that the Zuhur prayer program in congregation was positively welcomed by the students; students have obeyed the rules in school; students are more concerned with parental orders even though they are enjoying playing with their friends; students have respect for the community environment; and students have a spirit of love for nature and a culture of protecting the environment.

Analysis of FAM in satisfaction of inpatient services Muhammad Sabir Ramadhan; Nizwardi Jalinus; Refdinal Refdinal; Marsono Marsono; Yohanni Syahra; Asyahri Hadi Nasyuha; Buyung Solihin Hasugian; Erika Fahmi Ginting; Masyuni Hutasuhut
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 5: October 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i5.20295

Patients are the main object who must get the best service at a hospital, because the quality of hospital services determines the recovery of a patient and the quality of the hospital. The quality of hospital services has two components, namely the fulfillment of predetermined quality standards and the fulfillment of patient satisfaction. Hospitals must provide services that focus on patient satisfaction. Improving the quality of health services can be started by evaluating each element that plays a role in shaping patient satisfaction. The application of evaluation measures to patient care in each hospital is needed as an increase in the quality of service to patients. The analysis of the fuzzy associate memory method has the closeness of human reasoning to get solutions to various problems so that they are easy to apply and understand. Utilization of decision support system (DSS) analysis with fuzzy associate memory method can be used as an evaluation of the perception of each consumer complaint to measure the level of patient satisfaction.

Effect of cutting speed on milling process on surface roughness of ST-37 steel material workpiece Budi Syahri; Febri Prasetya; Refdinal Refdinal; Syahrial Syahrial
invotek Vol 21 No 1 (2021): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v21i1.766

The importance of the surface roughness value of a workpiece must be of concern to students and machine operators because the surface roughness of the workpiece becomes a benchmark for the use of a component in the machining plane and one of the significant influences on the surface roughness of the workpiece is the cutting speed parameter. To examine the extent of the effect of cutting speed on surface roughness, testing and analysis of the machining process results were carried out by varying three cutting speeds according to the material range and the type of cutting tool used. This study uses an experimental method, with the research object using steel ST-37 by making cuts on the surface. Test result data obtained that the average roughness price per rotation speed is (Ras) = 4.01μm for Cs 20 with a rotation speed of 530.78 Rpm. (∑Ras) = 2.84μm for cs 25 with a rotation speed of 663.48Rpm. (∑Ras) = 2.59 μm for cs 30 with a rotation speed of 796.18Rpm. With the roughness grade on the N8. So the conclusion in this study is that the higher the engine rotation speed, which is influenced by high cutting speed, the lower the surface roughness of the resulting workpiece.

Effect Variation Side Rake Angle and Depth of Cut Shapping Flat to Low Carbon Steel ST-37 Surface Roughness Value Muhammad Ichsan; Yufrizal A; Refdinal Refdinal; Rifelino Rifelino
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 2 No 2 (2020): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

The product quality of the production process using such production machine is always associated with dimensional precision, tolerance, and surface roughness. It is difficult to obtain the surface quality of the desired workpiece and yet to be aware of the precise parameters of the chisel eye angle, so that when the surface quality flat suction is not fixed and not as desired Problems in this study. The purpose of the study is to determine the influence of one of the different eye angle variations of the chisel, the Side Rake Angle and the depth of the cut to the small surface roughness value in the workpiece of flat shapping. The method used in this research is the experimental method. The results showed, from nine times the test gained two good tests on the roughness of the ST-37 steel material the first test of variation side rake angle 14 ⁰ at a depth of cut 0.5 mm as many as 3 specimens with a total surface roughness value of three specimens of 3.35 μm and the fourth Test was with a variation of side rake angle 16 ⁰ at a depth of 0.5 mm as many as 3 specimens with a total roughness value of 3.47 μm and a roughness value Each specimen in class N8. Kualitas produk dari proses produksi yang menggunakan mesin-mesin perkakas produksi selalu dikaitkan dengan ketepatan dimensi, toleransi, dan kekasaran permukaan. Sulitnya untuk mendapatkan kualitas permukaan benda kerja yang di inginkan serta belum diketahuinya parameter sudut mata pahat yang tepat menjadi masalah dalam penelitian ini. Tujuan penelitian adalah untuk mengetahui pengaruh salah satu variasi sudut mata pahat yaitu Side Rake Angle dan kedalaman pemotongan terhadap nilai kekasaran permukaan yang kecil pada benda kerja hasil penyekrapan datar. Metode yang digunakan dalam penelitian ini adalah metode eksperimen. Hasil penelitian menunjukan, dari Sembilan kali pengujian didapat dua pengujian yang bagus terhadap kekasaran bahan baja ST-37 yaitu pada pengujian pertama variasi side rake angle 14⁰ pada kedalaman pemotongan 0,5 mm dengan nilai kekasaran permukaan total ketiga spesimen 3,35 µm dan pengujian keempat yaitu dengan variasi side rake angle 16⁰ pada kedalaman pemotongan 0,5 mm dengan nilai kekasaran total 3,47 µm dan nilai kekasaran masing-masing spesimen pada kelas N8.

Analysis of the Effect of a Glass Layer on the Roof of a House of a Thermoelectric Generator on Temperature and Electrical Voltage Aprizal Saputra; Remon Lapisa; Refdinal Refdinal; Sri Rizki Putri Primandari
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 4 No 2 (2022): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Utilization of solar power can use a thermoelectric generator. Thermoelectric Generators work by taking advantage of temperature differences and the application of the Seebeck effect. This experimental study uses two prototypes of a perfect house with a roof made of zinc plate. One of the roofs of the house is covered with glass. Thermoelectrics are installed at the bottom of the roof of each house as many as 12 pieces and arranged in a series circuit. Data collection was carried out one day from 08.00 -15.59. The largest electrical voltage obtained occurred at 11.00 – 13.59 reaching 0.215 – 0.183 Volts in houses with glass-covered roofs and 0.654 – 0.527 Volts. The use of a layer of glass makes the roof temperature stable because the heat absorbed can be retained by the glass. As a result, the voltage generated in a house with a glazed roof is more stable than a house with a non-glazed roof. This research also proves that the difference in temperature affects the voltage generated by the thermoelectric. Pemanfaatan tenaga surya dapat menggunakan termoelektrik generator. Termoelektrik Generator bekerja dengan memanfaatkan perbedaan temperatur dan penerapan efek Seebeck. Penelitian eksperimen ini menggunakan dua prototipe rumah sempurna dengan atap dari seng plat. Salah satu atap rumah dilapisi dengan kaca. Termoelektrik dipasang pada bagian bawah atap masing-masing rumah sebanyak 12 buah dan disusun dengan rangkaian seri. Pengambilan data dilakukan satu hari dari pukul 08.00 -15.59. Tegangan listrik terbesar yang didapatkan terjadi pada pukul 11.00 – 13.59 mencapai 0,215 – 0,183 Volt pada rumah dengan atap dilapisi kaca dan 0,654 – 0,527 Volt. Penggunaan lapisan kaca membuat temperatur atap menjadi stabil karena panas yang diserap dapat ditahan oleh kaca. Akibatnya membuat tegangan yang dihasilkan pada rumah dengan atap dilapisi kaca lebih stabil. Dari penelitian ini juga membuktikan perbedaan temperatur mempengaruhi tegangan listrik yang dihasilkan oleh termoelektrik.

Penerapan Model Pembelajaran Kooperatif Tipe Teams Game Tournament Terhadap Hasil Belajar Bimbingan TIK Dino Adi Putra; Refdinal Refdinal; Edidas Edidas; Fadhilah Fadhilah
QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama Vol 13 No 2 (2021): Qalamuna - Jurnal Pendidikan, Sosial, dan Agama
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Program Pascasarjana IAI Sunan Giri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/qalamuna.v13i2.1200

This study aims to determine the effectiveness of the application of the Teams Game Tournament (TGT) Cooperative Learning Model on ICT Guidance Learning Outcomes at UPT SMP N 2 Painan. The type of research used is experimental research. This research uses numerical research procedures and the analysis uses statistics and uses quantitative methods. For the research results, the experimental class data is 78.933 with the control class average score is 69.76. The final test analysis where the tcount is 9.484 and ttable is 1.68 with a 95% significance level so that tcount > ttable, the research hypothesis is accepted. For student activity and response, the average result is 4,301 with a percentage of 86,037 with a very good classification and for the average student response result is 4,343 with a percentage of 86,871 with a very good classification. The effectiveness of the TGT learning model in the effectiveness trial, it was found that 87% of students got a score of 70 which was classically effective and for the control class, 43.33% of students got a score of <70 which was not classically effective. In terms of Gain Score, it gets a value of 37.31% (medium). In conclusion, there is an effect of the Team Game Tournament (TGT) cooperative learning model on student learning outcomes.

Students’ Perceptions of Android-Based Interactive Multimedia in Learning Biology Ronal Watrianthos; Reti Handayani; Rosmidah Hasibuan; Ambiyar Ambiyar; Refdinal Refdinal
EDUKATIF : JURNAL ILMU PENDIDIKAN Vol 4, No 4 (2022): August Pages 5501-6400
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/edukatif.v4i4.3044

Multimedia that you can interact with is an important part of learning. Multimedia can be used as a learning tool to improve the quality of learning. Learning media can be used to try out different ways to teach and learn. Interactive media made for Android helps students learn more. Using this material makes a big difference in how well students learn. The goal of this study is to find out how students feel about using interactive multimedia based on Android in Biology classes at Senior High Schools after COVID-19. This study was done with 60 students from Mts Ar Royan Aek Nabara Labuhanbatu. They all filled out a questionnaire. Students were sent a questionnaire to gather information, and the results were looked at. According to the perception findings, 67 percent of students have used interactive multimedia based on Android, 69 percent of teachers use audiovisual tools to teach ideas, and 78 percent of respondents prefer to use interactive multimedia. This shows that using Android-based interactive multimedia apps could improve the quality and effectiveness of biology education during the COVID-19 epidemic.

PEMBERDAYAAN BUMNAG KENAGARIAN ANDIANG SEBAGAI PENGHASIL PUPUK GRANUL UNTUK TANAMAN HIAS Refdinal Refdinal; Ambiyar Ambiyar; Donny Fernandez; Junil Adri
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i2.559-568

Sejak pandemi covid-19 muncul di indonesia, kebijakan barupun bermunculan, seperti Work From Home (WFH) yang mana masyarakat dibatasi untuk keluar rumah dan disarankan untuk melakukan pekerjaan dirumah saja. Masyrakatpun menghabiskan banyak waktu dirumah selama pandemi. Hal ini membuat orang banyak melakukan hal-hal baru selama dirumah salah satunya yakni memelihara tanaman hias dirumah. Memelihara tanaman hias bisa memberikan banyak manfaat salah satunya memberi keindahan pada rumah. Namun keindahakan yang dihasilkan oleh tanaman hias tentunya tidak lepas dari cara memelihara dan pemberiaan pupuk. Pupuk bagi tanaman sangat diperlukan untuk menambah unsur hara bagi pertumbuhan tanaman. Pupuk yang banyak diminati oleh oleh para perajin tanaman hias adalah pupuk gradul karena bentuknya yang menarik, keterbiasaan menggunakan pupuk gradul dan kemudahan dalam menggunakannya. Banyaknya minat akan pupuk granul menjadikan peluang produsen pupuk granul terutama di Kenagarian Andiang Kabupaten 50 Kota yang terdapat banyak populasi ternak ayam, sehingga kotoran ayam bisa dijadikan bahan baku pupuk granul. Dalam kegiatan pengabdian ini, dilakukan pengolahan pupuk granul menggunakan alat dengan sistem pirangan putar sehingga pengolahan pupuk granul menjadi lebiih mudah. Hasil dari pelaksanaan kegiatan ini memberikan manfaat yang begitu terasa bagi masyarakat terutama bagi perekonomian masyarakat di Kenagarian Andiang Kabupaten 50 Kota.

INOVASI TEKNOLOGI MESIN POWER THRESER UNTUK PETANI PADI DI KABUPATEN DHARMASRAYA Budi Syahri; Refdinal Refdinal; Abdul Aziz
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i2.594-603

The purpose of implementing this community service activity is to improve the economy of the rice farming community in Dharmasraya Regency, especially Kenagarian Koto Baru. From the results of a survey conducted by the service team, an indication of the basic problem of farmers is in the process of handling rice at post-harvest. In this process, farmers spend a lot of energy, time and money because they tend to be carried out manually. Through this service activity, the service team tries to unravel the problems of farmers by making technological innovations for the power thereser machine. The science and technology offered in this activity is the construction of a power thereser machine that is equipped with a long blow. The function of this blowing tunnel is to efficiently separate filled rice and empty rice. So that the rice yields obtained by farmers are clean with the best quality of grain. The method of applying science and technology in this activity is to provide introductory theory, demonstration, practice and its application directly. The introductory theory is applicable, namely the introduction of tools, how to use them, their functions and application in the field. The results of the implementation of this activity provide significant benefits to the work process of farmers in operating the rice thresher machine. The level of satisfaction and assessment of farmers on this rice thresher machine is very high because it is effective in construction and efficient in operation

PENGARUH PENGGUNAAN MODUL PEMBELAJARAN TERHADAP HASIL BELAJAR MATA PELAJARAN GAMBAR TEKNIK KELAS X JURUSAN TEKNIK PEMESINAN DI SMK NEGERI 1 PADANG Alvien Khardin; Suparno Suparno; Primawati Primawati; Arwizet K; Refdinal Refdinal; Yufrizal Yufrizal
Jurnal Vokasi Edukasi (VomEk) Vol 2 No 2 (2020): Jurnal Vokasi Mekanika
Publisher : Jurusan Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Tujuan dilaksanakan penelitian ini adalah untuk: (1) mengetahui tahapan pembuatan dan pengembangan modul pembelajaran yang tepat pada mata pelajaran gambar teknik kelas X jurusan teknik mesin SMK/MAK; (2) mengetahaui kelayakan modul melalui uji validitas; (3) mengetahui kepraktisan modul melalui uji praktikalitas; (4) mengetahui efektivitas modul melalui uji efektivitas. Penelitian ini merupakan penelitian Research and Development (R & D) yang menggunakan model pengembangan dari Plomp (2013). Penelitian ini dilaksanakan di SMK Negeri 1 padang. Subjek penelitian adalah siswa kelas X jurusan teknik pemesinan SMK Negeri 1 Padang. Pengumpulan data menggunakan angket dan tes. Tes menggunakan pre test dan post test untuk memperoleh data efektivitas. Analisis menggunakan pendekatan kualitatif dan kuantitatif. Penelitian ini menghasilkan produk berupa modul gambar teknik untuk siswa kelas X jurusan teknik mesin SMK/MAK. Penilaian modul pembelajaran meliputi validitas ahli materi, validitas ahli media, uji one to one, uji kelompok kecil (small group), uji praktikalitas oleh guru, uji praktikalitas oleh 32 siswa, uji pemakaian oleh 32 siswa. Validasi ahli materi mendapatkan pesentase 80,71% dengan kategori sangat layak, validasi ahli media mendapatkan persentase 84,38% dengan kategori sangat layak, uji one to one mendapatkan persentase 100 % dengan kategori sangat praktis. Uji small group mendapatkan persentase 100% dengan kategori sangat praktis, uji praktikalitas oleh guru mendapatkan persentase 95 % dengan kategori sangat praktis, uji praktikalitas oleh 32 siswa mendapatkan persentase 90,63 % dengan kategori sangat layak, dan uji pemakaian oleh 32 siswa menunjukkan ada peningkatan hasil belajar setelah menggunakan modul gambar teknik. Kata Kunci : Modul Pembelajaran, Hasil Belajar, Gambar Teknik

Co-Authors - Primawati Abdul Aziz Abdullah, MT, Dr. Rijal Ahmad Arif Alvien Khardin Ambiyar, Ambiyar Ambyar Ambyar Andre Kurniawan Antoni Hilman Aprizal Saputra Arisman Telaumbanua Arwizet Arwizet, Arwizet Asyahri Hadi Nasyuha Azmil Azman Budi Syahri Buyung Solihin Hasugian Dino Adi Putra Donny Fernandez Dzaky Dzulqa Arijal Edidas , Edidas Elfi Tasrif Evan Prakarsa Fadhilah Fadhilah Fadhli Ranuharja Febri Prasetya Fikrul Aziz Ginting, Erika Fahmi Hamdani Hamdani Hasan Maksum Hermi Zaswita Irma Yulia Basri Jalius Jama Junil Adri M Iqbal M. Yasep Setiawan Marsono Marsono Martias Martias Maryatun Kabatiah Masyuni Hutasuhut Meri Yolanda Muhammad Akhbar Muhammad Anwar Muhammad Ichsan Muslim Muslim Niki Prasetio L Nizwardi Jalinus Nizwardi Zalinus Nurdin Hendri OSKAH DAKHI Purwanto, Wawan Purwantono Purwantono Ramadhan, Muhammad Sabir Randa M Remon Lapisa Reti Handayani Ridwan Ridwan Rifelino Rifelino Riky Satria Rizki Hardian Sakti Ronal Watrianthos Rosmidah Hasibuan Salsabila, Unik Hanifah Sri Rizki Putri Primandari Suparno Suparno Syaflan Sandi Harta Putra Syafni Yulia Devani Syahrial Syahrial Syaiful Islami Toto Sugiarto Toto Sugiarto Wagino Waskito Willy Vernando Yanita, Merita Yanto, Doni Tri Putra Yoga Andika Yohanni Syahra Yolanda Ferdani Melinton Yolanda Putri Yolli Fernanda Yufrizal Yufrizal Yuke Permata Lisna

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