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All Journal TEKNIK Jurnal Pendidikan dan Pengajaran Sainstek INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Ilmiah Pendidikan dan Pembelajaran Journal of Educational Research and Evaluation JRTI (Jurnal Riset Tindakan Indonesia) IJECA (International Journal of Education and Curriculum Application) MSI Transaction on Education Jurnal Sosial dan Teknologi Jurnal Vokasi Mekanika
Remon Lapisa
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Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science 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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DESAIN DAN KAJIAN SIMULATIF HEAT EXCHANGER BERPROFIL ‘SPIRAL TUBE IN PIPE’ SEBAGAI PEMINDAH PANAS ANTARA ETHANOL DAN AIR Lapisa, Remon; Fernandez, Donny; Putra, Dwi Sudarno
Sainstek Vol 12, No 1 (2009): Vol. XII No. 1, September 2009
Publisher : Lembaga Penelitian Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (279.164 KB)

Abstract

The energy crisis has stimulated scientists to begin developing the concept of zero energy building through residual energy conservation and turn it into something useful, One of them is the use of ethanol in PEM fuel cells are obtained through distillation. To change the temperature Ethanol and can be destilled, will be designed heat exchanger that has a function : raising the temperature of ethanol in order to evaporates with intermediate high temperature water, and then lowering the temperature back pure ethanol with low-temperature water heat convection. ‘Spiral Tube In Pipe’heat exchanger is designed to transfer heat that brought by ethanol with the temperature  80 C  to the cooling water in a spiral tube wrapped with a pipe. Hopefully, through this method can achieve maximum heat transfer value, with low cost on ethanol output temperature 35 C. The basic principles in the development of this heat exchanger are the achievement of maximum heat transfer, Simple in design  and economic value.Tube material made of copper wich has good conduction coefficient. Water pipes made ​​of PVC plastic gutter is easily available and cheap. Minimum pipe size is designed to be more flexible, easily placed anywhere and is simple to maintain. In this paper also included a CFD simulation to determine the flow characteristics that occur along the copper tube. Mathematical equations of physical phenomena was resolved through a linear regression methods. Keywords: heat transfer, Spiral tube , efficiency, CFD simulation
Developing Energy Conversion Teaching Material Based on Discovery Learning Model Through Scientific Approach Supriadi, Supriadi; Suparno, Suparno; Maksum, Hasan; Lapisa, Remon
Jurnal Pendidikan dan Pengajaran Vol 53, No 2 (2020): JULY 2020
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (181.931 KB) | DOI: 10.23887/jpp.v53i2.22176

Abstract

Energy conversion material is material that requires a more detailed and broad understanding and explanation of the material. To be able to improve students' understanding, a discovery learning model teaching material is needed through a scientific approach oriented to problems related to real life. The purpose of this study is to produce teaching materials that are valid, practical and effective in the field. This type of research is research and development  with a 4-D (four-D) development model. The subjects of this study were students of class X Automotive Light Vehicle Engineering Vocational High School 1 Padang. The instruments used were validation sheets, teacher and student response questionnaires, and learning achievement tests.The results obtained from this development research are as follows: (1) Generating teaching materials for discovery learning models through a scientific approach. (2) The results of the analysis of the validity of teaching materials to experts obtained an average of 0.910> 0.667 with a valid category, (3) The results of the practicality analysis of teaching materials from the teacher's response were 87.33% with a very practical category and students' responses were 91.26% with a very practical category (4) The results of the analysis of the effectiveness of teaching materials are assessed from the results of the pretest and posttest, the gained score is 0.59 in the medium category. The study provides evidence that discovery learning model teaching material through scientific approach is valid, practical and effective to use.
EVALUASI PELAKSANAAN PROGRAM PRAKTEK KERJA INDUSTRI PADA KOMPETENSI KEAHLIAN NAUTIKA KAPAL NIAGA Evenda, Devi; Lapisa, Remon
Jurnal Imiah Pendidikan dan Pembelajaran Vol 4, No 1 (2020): Maret 2020
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jipp.v4i1.24172

Abstract

Problems in the implementation of apprenticeship students in the Nautika Kapal Niaga expertise in SMKN 2 Painan students include the difficulty of adjusting the apprenticeship schedule to the shipping industry, the lack of competence with student work opportunities has an impact on the low ability of students after implementing internship. Research methods are quantitative research methods and qualitative research methods whose use is adjusted to the desired data needs to answer research questions. Research respondents are each party involved in carrying out internship and 40 students. The instrument for qualitative research uses interview guidelines and specific observation guidelines for prakerin preparation data, while quantitative research data uses questionnaire instruments, learning outcomes tests and rubric of practical learning outcomes assessment. The results showed that 1) Formative evaluation related to the assessment of the implementation process of the apprenticeship in preparation of the apprenticeship had good results, the assessment of the implementation of teacher assignments (77%) was in the medium category and the industry supervisor (63%) was in the poor category, students' perceptions on the application of the teacher's tasks 69 % and industry advisers 66%, meaning that improvements still need to be done because they have moderate (sufficient) value. The results of the study on the assessment of the scope of work carried out by apprenticeship activities carried out by students 82% with good categories at stage I, 83% with good categories at stage II, 80% with good categories at stage III, 67% categorized as being at stage IV and 62% categorized poor in stage V, the overall average score is at an average of 74% in the medium category, 2) summative evaluation related to the assessment of the results of the perceived apprenticeship in the realm of attitude the overall average score in the learning outcomes of the realm of attitude is 72% in the medium category, the realm psychomotor practice 1 with an average of 80 and practice II with an average of 83, the value of good category and students declared competent in practice, in the cognitive realm obtained an average of 71.20 this score is still below the KKM in the cognitive domain that is 75, cognitive learning outcomes indicate that students' cognitive abilities still need to be improved.Keywords: Internship, Formative Evaluation, Summativ Evaluation
Kontrol Ventilasi Mekanis Berbasis pada Jumlah Estimasi Penghuni menggunakan Sensor Karbon Dioksida Rahman, Haolia; Sukandi, Agus; Nasruddin, Nasruddin; Arnas, Arnas; Lapisa, Remon
TEKNIK Vol 41, No. 3 (2020): December 2020
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v41i3.33416

Abstract

Ventilasi merupakan unsur penting untuk menjaga kualitas udara yang baik di dalam sebuah bangunan. Namun, penggunaan ventilasi yang berlebihan menyebabkan tingginya konsumsi energi dari sistem HVAC. Standar ASHRAE telah memberikan aturan bahwa laju ventilasi tergantung dari banyaknya penghuni dan luas ruangan di dalamnya. Oleh karena itu kuantifikasi populasi penghuni perlu diketahui sebagai acuan sebuah kontrol ventilasi. Pada penelitian ini, jumlah penghuni diestimasi menggunakan metode Bayesian MCMC berdasarkan level CO2 di dalam ruangan. Persamaan kesetimbangan massa CO2 digunakan sebagai model perhitungan Bayesian MCMC. Pengujian metode Bayesian dalam mengestimasi jumlah penghuni diaplikasikan pada sebuah ruangan kantor skala kecil berukuran 96,7 m3 yang dilengkapi dengan sistem ventilasi, sehingga estimasi penghuni dan kontrol ventilasi dapat dilakukan secara bersamaan. Pengujian juga mencakup kontrol ventilasi konvesional menggunakan level CO2 secara langsung tanpa mengkonversinya menjadi jumlah penghuni. Laju ventilasi berdasarkan jumlah penghuni pada ruangan pengujian mengacu pada standar ASHRAE 62.1. Hasil pengujian menunjukan bahwa kontrol ventilasi berbasis pada estimasi jumlah penghuni menggunakan metode Bayesian berhasil dilaksanakan dengan nilai laju ventilasi per penghuni lebih mendekati standar ASHRAE 62.1 dibandingkan dengan ventilasi metode konvensional.
Hubungan Persepsi Siswa Dalam Metode Mengajar Guru Terhadap Hasil Belajar Siswa Teknik Kendaraarn Ringan di SMK N 8 Padang Putra, Ilma; Martias, Martias; Lapisa, Remon
MSI Transaction on Education Vol 1 No 4 (2020): MSI Transaction on Education
Publisher : Minangkabau Scholar Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/mted.v1i4.27

Abstract

Penelitian ini membahas tentang hubungan persepsi siswa dalam metode mengajar guru terhadap hasil belajar siswa yang di latar belakangi pada masalah masih kurangnya perhataian, tanggapan dan respon siswa terhadap materi yang disampaikan oleh guru dalam proses pembelajaran di kelas. Jenis penelitian ini adalah penelitian kuantitatif bersifat korelasional. Populasi dalam penelitian ini yaitu siswa kelas XI Program Keahlian Teknik Kendaraan Ringan SMK 8 Padang yang berjumlah 45 siswa. Jenis analisis data yang digunakan teknik adalah teknik analisis korelasi Product Moment. Hasil dari analisis di peroleh (1) koefisien korelasi r hitung (0,957) > r tabel (0,355) serta t hitung (17,769) > t tabel (1,699) pada taraf signifikansi 5%, (2) koefisien korelasi r hitung (0,964) > r tabel ( 0,355) serta t hitung (19,522) > t tabel (1,699) pada taraf signifikansi 5%. Berdasarkan hasil penelitian, disimpulkan bahwa persepsi siswa dalam metode mengajar guru memiliki hubungan positif dan signifikan terhadap hasil belajar.
Curriculum Evaluation of Light Vehicle Engineering Department with Discrepancy Model as Per Industry Needs Aprianto, Anggi; Rizal, Fahmi; Lapisa, Remon; ., Ambiyar; Wakhid, Wakhinuddin; ., Sukardi; Riyanda, Afif Rahman
Journal of Education Research and Evaluation Vol 4, No 4 (2020)
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jere.v4i4.28978

Abstract

The implementation of the curriculum as per industrial needs should be improved in terms of qualifications of teachers, tools, practicum materials, and the use of learning models as per industry needs. This study aims to evaluate the used curriculum of light vehicle engineering department as per industry needs. This study uses discrepancy evaluation model (design, installation, process, product and comparison) that describes the implementation of curriculum according to the industry needs from various aspects, namely: design, installation, process, product and comparison. The study results concluded that achievement level of curriculum implementation as needed in the design component obtained an average score of 4.28 (83.17%) classed in a good category; installation components get an average score of 3,502 (78.47%) classified in sufficient categories; process components get an average score of 4.05 (81.75%) classed in a good category; and product components that scored an average of 4.02 (81.26%) classified in a good category. As well as in the comparison component that obtained an average score of 3,324 (74.27%) classified in sufficient categories. The implementation of vocational school curriculum majoring in light vehicle engineering as a whole is categorized as sufficient. Therefore, it needs a follow-up from the relevant parties for a better implementation.; one of which is by revising the curriculum to fit the needs of the industry.
Learning Media Development for Continuously Variable Transmission Automatic Transmission System Subjects on Motorcycles Lapisa, Remon; Azhari, Nevil
IJECA (International Journal of Education and Curriculum Application) Vol 4, No 2 (2021): August
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/ijeca.v4i2.5329

Abstract

Teaching aids that have similarities to tools are actually very helpful in learning. In improving students' understanding, learning media is needed, namely a simulator. This study aims to design a Continuously Variable Transmission (CVT) simulator with validity, practicality and effectiveness, useful to be used as a medium of learning in schools in the subject of automatic transmission systems. The type of research used is Research and Development (R&D) with 4-D model development procedures. This research consists of four stages, namely: Define, Design, Develop, and Disseminate. The subjects used were students of SMKN 1 Koto Baru Dharmasraya, the technical analysis of the data used was technical analysis from experts by looking at the validity, practicality and effectiveness of the simulator. To see the difference between the average score of learning scores before and after using a simulator with Gain Score and Standard Deviation. The results showed that the simulator met the principle of relevance from expert judgment with a level of 0.81 which was declared a valid category, on practicality based on the teacher's response it was declared practical with a value of 87.33% and student responses with a value of 92.42%. The effectiveness of the tool is declared effective. On the results of the pretest with an average score of 56.00%, the results of the posttest with an average score of 73.00%, on the N-gain the overall average of students is 0.37 and on the standard deviation seen from the N-gain of 0.12. Based on the development of this media, it can be concluded that the simulator is valid, practical and effective in learning at school
Pengaruh Penerapan Model Project Based Learning Terhadap Hasil Belajar Praktik Pemboran Mahasiswa Teknik Pertambangan AKNS Silvia, Febri; Abdullah, Rijal; Lapisa, Remon
Jurnal Sosial dan Teknologi Vol. 1 No. 10 (2021): Jurnal Sosial dan Teknologi (SOSTECH)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/jurnalsostech.v1i10.228

Abstract

Latar belakang: Teknik Pemboran merupakan salah satu mata kuliah pada Program Studi Teknik Pertambangan PDD AKNS. Tujuan penelitian: Penelitian ini bertujuan untuk mengungkapkan pengaruh penerapan model project based learning terhadap peningkatan hasil belajar praktik pemboran mahasiswa Teknik Pertambangan PDD AKNS Metode penelitian: Penelitian ini merupakan quasi experimen dengan desain Pretest-Postest Control Design yang terdiri dari tahap persiapan, pelaksanaan dan tahap akhir. Berdasarkan tahap persiapan dilakukan observasi kemampuan awal mahasiswa dan membuat rubrik penilaian kinerja. Tahap pelaksanaan dilakukan pembagian kelas eksperimen dan kelas kontrol dimana pada kelas eksperimen diterapkan model PjBl sedangkan pada kelas kontrol tetap diterapkan model konvensional. Tahap akhir dilakukan analisis data, pembahasan dan pengambilan kesimpulan hasil penelitian. Hasil penelitian: Hasil penelitian menunjukkan bahwa bahwa t hitung (2,95) > t tabel (2,0101)  pada taraf signifikansi (α) 0,05 dan hasil belajar kelas eksperimen mengalami kenaikan sebesar 33%, sedangkan pada kelas kontrol hanya 12%. Dapat diambil kesimpulan bahwa penerapan model Project Based Learning berpengaruh terhadap peningkatan hasil belajar praktik pemboran mahasiswa Teknik Pertambangan PDD AKNS. Kesimpulan: Berdasarkan hasil analisis data penelitian yang telah dilakukan, maka dapat disimpulkan bahwa penerapan model Project Based Learning berpengaruh terhadap peningkatan hasil belajar praktik pemboran mahasiswa Teknik Pertambangan PDD AKNS. Hal tersebut dibuktikan dengan analisa Gain Score dimana pada kelas eksperimen mahasiswa yang mengalami kenaikan nilai sebesar 33% dengan kategori sedang, sedangkan pada kelas kontrol hanya 12% dan dengan kategori rendah.
Pengaruh Inersia Termal Tanah Terhadap Kenyamanan Ruangan Remon Lapisa; Krismadinata Krismadinata; Arwizet Arwizet; Martias Martias; Ahmad Arif; M.Y. Setiawan
invotek Vol 18 No 1 (2018): INVOTEK: Jurnal Inovasi, Vokasional, dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.471 KB) | DOI: 10.24036/invotek.v18i1.271

Abstract

Sebuah desain bangunan yang baik harus memperhatikan karakteristik geografis, kondisi lingkungan dan iklim setempat dimana bangunan didirikan. Salah satu faktor penting yang dapat mempengaruhi kenyamanan termal bangunan adalah pengaruh inersia termal tanah dan material selubung bangunan. Tujuan penelitian ini adalah untuk menganalisa pengaruh inersia termal tanah terhadap perubahan temperatur dan kenyamanan penghuni didalam ruangan. Pada bagian pertama, karakteristik bangunan dan pemodelan numerik akan dijelaskan yang dilengkapi dengan data iklim lokasi dimana studi kasus dilakukan. Perpindahan panas yang terjadi dari bangunan menuju tanah dan sebaliknya digambarkan secara detil pada bagian selanjutnya dengan menggunakan pendekatan model perpindahan panas tiga dimensi. Hasil simulasi numerik menggunakan TRNSYS (R) menunjukan bahwa inersia termal tanah berpengaruh secara signifikan terhadap suhu dan kenyamanan ruangan. Tanah dengan konduktivitas dan kapasistas termal yang baik mampu menurunkan tingkat ketidaknyamanan ruangan hingga 21.9%.
ANALISIS KECEPATAN AIR MASUK TERHADAP BUKAAN GUIDE VANE TURBIN CROSSFLOW SKALA PICO HYDRO DENGAN SIMULASI CFD Dimas Riadi; Remon Lapisa; Hendri Nurdin; Mulianti Mulianti
Jurnal Vokasi Edukasi (VomEk) Vol 3 No 3 (2021): Jurnal Vokasi Mekanika
Publisher : Jurusan Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (674.461 KB) | DOI: 10.24036/vomek.v3i3.232

Abstract

Turbin Ossberger atau yang biasa dikenal dengan turbin Cross-flow adalah type turbin bertekanan yang kerap dipakai pada PLTA. Contohnya adalah pembangkit listrik tenaga pico hydro. Kenagarian Koto Hilalang di Kabupaten Solok Kecamatan Kubung, Sumatera Barat merupakan salah satu contoh lokasi dimana Pembangkit Listrik Tenaga pico hydro dapat digunakan sebagai sumber tenaga. Penelitian ini dilakukan untuk menganalisis akibat dari variasi guide vane pada turbin jenis cross-flow yang dimanfaatkan sebagai pembangkit listrik tenaga pico hydro dengan daya yang dihasilkan sebesar 31,85 Kw. Dengan adanya penelitian ini dapat menentukan kecepatan magnitude air terhadap variasi bukaan guide vane untuk meningkatkan efisiensi turbin. Metode dalam pelaksanaan penelitian ini yaitu simulasi Computational Fluid Dynamic (CFD) dilakukan pada perangkat lunak Autodesk CFD dengan model turbulens k-ipsilon. Tahapan dalam melaksanakan simulasi CFD ini yakni dengan memvariasikan bukaan guide vane dengan variasi 25%, 50%, 75%, 100%. Hasil analisis pada simulasi CFD menunjukan bahwa kecepatan maksimal berada pada bukaan 25% yang menghasilkan kecepatan masuk sebesar 112,79 m/s pada parametric distance 32, simulasi ini menunjukan kecepatan masuk air mengalami penurunan. Kecepatan masuk air pada simulasi ini di buat tetap dengan sebesar 11,72 m/s dan dalam keadaan steady state.
Co-Authors Abdul Aziz Abdullah, Rijal Afif Rahman Riyanda Agus Sukandi Ahmad Arif Ambiyar, Ambiyar Andre Kurniawan Aprianto, Anggi Arnas Arnas, Arnas Arwizet Arwizet Arwizet K Asnil Asnil Azhari, Nevil Budi Syahri Bulkia Rahim Delima Yanti Sari Dimas Riadi Donny Fernandez Dwi Sudarno Putra Eko Indrawan Evenda, Devi Fahmi Rizal Firdaus Firdaus H H, Tiara Klaudia Hasan Maksum Hendri Nurdin Huda, Yasdinul Irma Yulia Basri Irzal Irzal Krismadinata Krismadinata Kurniawan, Alex Firstson M.Y. Setiawan Martias Martias Muhamad Fadel Pratama Muhammad Azim Muhammad Elfin Muhammad Lathif Mahendra Muhammad Rizki Anshari Mulianti Mulianti Nasruddin Nasruddin Primawati Primawati purwantono purwantono Putra, Ilma Putra, Rusnardi Rahmat Rahman, Haolia Rama, Alzet Refdinal Refdinal Rizki Vananda Robby Mulya Silvia, Febri Sukardi, Sukardi Suparno Suparno Supriadi Supriadi Wakhid, Wakhinuddin Yudi Star Novsky Zainal Abadi