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All Journal JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Pendidikan dan Pengajaran Rekayasa Mesin Indonesian Journal on Learning and Advanced Education (IJOLAE) Jurnal Pendidikan Teknik Mesin Undiksha Quantum Teknika Multi Proximity: Jurnal Statistika Universitas Jambi Jurnal Pengabdian Masyarakat dan Riset Pendidikan Journal of The Indonesian Society of Integrated Chemistry
Elisa, Edi
Universitas Pendidikan Ganesha
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Public Health Social Sciences Other

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Kajian Peluang Pemanfaatan Bioetanol Sebagai Bahan Bakar Utama Kendaraan Masa Depan Di Indonesia Wiratmaja, I Gede; Elisa, Edi
Jurnal Pendidikan Teknik Mesin Undiksha Vol 8, No 1 (2020)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v8i1.27298

Abstract

Kelangsungan penggunaan bioetanol sebagai aditif dari bahan bakar bensin yang bersumber dari energi fosil khususnya di Indonesia cukup mendapatan tantangan berat, apalagi untuk menjadikan bioetanol sebagai bahan bakar utama pengganti bahan bakar fosil dimasa depan. Artikel ini ditulis berdasarkan hasil kajian dan studi literatur yang berkaitan dengan pemanfaatan bioetanol sebagai salah satu energi alternatif. Metode penelitian meliputi pengambilan dan kompilasi data sekunder serta berusaha memberikan suatu gagasan solusi dalam mengatasi permasalahan yang timbul yang pada akhirnya dari analisis data ditarik suatu kesimpulan dari keseluruhan studi literatur yang telah dilakukan.Dari kajian literatur diperoleh kelebihan dari bioetanol yang cukup signifikan yaitu mampu meningkatkan unjuk kerja dari mesin terutama pada putaran mesin yang tinggi. Penggunaan bioetanol juga mampu menurunkan emisi CO, dan CO2. Harus pula dilihat beberapa kekurangannya antara lain bioetanol bereaksi dengan logam seperti magnesium dan aluminium. Selanjutnya dari sisi ekonomi untuk memasarkan bioetanol dengan harga rendah cukup sulit untuk dilakukan. Dari segi penyediaan bahan baku yang bersumber dari tanaman yang mengandung gula dikhawatirkan akan memicu persaingan antara ketersediaan bahan baku dengan ketersediaan pangan.Salah satu solusi dalam menjamin keberlangsungan pemenuhan bahan baku pembuatan bioetanol adalah melalui pemanfaatan bahan-bahan berlignosellulosa yang memiliki struktur gula sederhana dan dapat dikonversi menjadi etanol. Dari sisi ketersediaan masih cukup melimpah dan masih belum banyak dimanfaatkan dalam skala besar.Kata Kunci : Bioetanol, Energi Terbarukan, Unjuk KerjaDaftar RujukanArlianti, L. (2018). Bioetanol sebagai sumber green energy alternatif yang potensial Di Indonesia A review article. Jurnal Keilmuan dan Aplikasi Teknik UNISTEK, 5(1), 16–22.Elinur, Priyarsono, D. S., & Firdaus, M. T. M. (2010). Perkembangan konsumsi dan penyediaan energi dalam perekonomian Indonesia. Indonesian Journal of Agricultural Economics (IJAE), 2(1), 97–119.Fahmi, L., & Setiyo, M. (2015). Pengaruh campuran ethanol pada laju korosi tangki bahan bakar). Semnastek, (November), 1–6. Retrieved from jurnal.ftumj.ac.id/index.php/semnastekFitriyatus Sa’adah, A., Fauzi, A., & Juanda, B. (2017). peramalan penyediaan dan konsumsi bahan bakar minyak indonesia dengan model sistem dinamik prediction of fuel supply and consumption in Indonesia with system dynamics model. Jurnal Ekonomi dan Pembangunan Indonesia, 17(2), 118–137. doi:10.21002/jepi.v17i2.661Ismiyati, Marlita, D., & Saidah, D. (2014). Pencemaran udara akibat emisi gas buang kendaraan bermotor. Jurnal Manajemen Transportasi & Logistik (JMTransLog), 01(03), 241–248. doi:10.25292/j.mtl.v1i3.23Novendri, Y. (2018). Pengaruh penambahan aditif etanol pada bensin ron 88 dan ron 92 terhadap prestasi mesin. Jurnal Konversi Energi Dan Manufaktur UNJ, 1(April), 33–39. doi:https://doi.org/10.21009/JKEM.5.1.6Octaviani, R., Irsyad, M., & Reksowardojo, I. K. (2010). Pengaruh penambahan bioetanol terhadap konsentrasi emisi gas Hc , Co , Dan Co 2 pada motor 2 langkah. Jurnal Teknik Lingkungan, 16(2), 173–184.Offei, F., Mensah, M., Thygesen, A., & Kemausuor, F. (2018). Seaweed bioethanol production: A process selection review on hydrolysis and fermentation. Fermentation, 4(4), 1–18. doi:10.3390/fermentation4040099Setiawati, D. R., Sinaga, A. R., & Dewi, T. K. (2013). Proses pembuatan bioetanol dari kulit pisang kepok. Jurnal Teknik Kimia, 19(1), 9–15.Wiratmaja, I. G. (2010a). Analisa unjuk kerja motor bensin akibat pemakaian biogasoline. Jurnal Ilmiah Teknik Mesin Cakram, 4(1), 16–25.Wiratmaja, I. G. (2010b). Pengujian karakteristik fisika biogasoline sebagai bahan bakar alternatif pengganti bensin murni. Jurnal Energi Dan Manufaktur, 4(2), 145–154. doi:https://doi.org/10.24843/JEM.2020.v13.i01Wiratmaja, I. G., Kusuma, I. G. B. W., & Winaya, I. N. S. (2011). Pembuatan etanol generasi kedua dengan memanfaatkan limbah rumput laut eucheuma cottonii sebagai bahan baku. Jurnal Energi Dan Manufaktur, 5(1), 75–84.
Analisis dan Optimalisasi Aliran Fluida pada Prototype Kendaraan Ganesha Surface Water dengan Menggunakan Software Solidworks Sastrawan, Dewa Gede Oka; Elisa, Edi; Dantes, Kadek Rihendra
Jurnal Pendidikan Teknik Mesin Undiksha Vol 9, No 1 (2021)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v9i1.33122

Abstract

Aerodinamika adalah aspek yang memperhitungkan gaya yang disebabkan oleh aliran fluida yang ditunjukan dengan nilai (Coeficient Of Drag) hal ini akan berpengaruh pada optimalisasi kinerja dan konsumsi energi yang digunakan. Tujuan dari penelitian ini yaitu untuk memodifikasi desain standar Ganesha Surface Water sehingga diperoleh desain yang memiliki nilai Coeficient Of Drag minimum. Untuk mengetahui nilai Coeficient Of Drag diperlukannya sebuah simulasi analisis aliran fluida, salah satunya adalah menggunakan software Solidwork, software Solidworks dikenal dengan software yang memiliki kecepatan dan ketepatan dalam menganalisis. Jenis Penelitian yang dilakukan adalah Research and Development (R&D) dengan menggunakan model penelitian R2D2. Setelah dilakukannya proses simulasi analisis aliran fluida diketahui bahwa desain hasil modifikasi kendaraan Ganesha Surface Water memiliki nilai Coeficient Of Drag 0,038 (28%) lebih rendah dibandingkan dengan desain kendaraan standar, sedangkan pada desain hasil modifikasi cadik kendaraan Ganesha Surface Water memiliki nilai Coeficient Of Drag 0,139 (38%) lebih rendah dibandingkan dengan desain cadik standar. Melalui penilaian ahli, desain modifikasi Ganesha Surface Water telah mendapat persentase nilai 86% dengan kualifikasi layak.Kata Kunci: aerodinamika; coeficient of drag; ganesha surface water; sofware solidworks.Aerodynamic aspects take into account the drag caused by fluid flow, which is indicated by the value (Coefficient of Drag). It will affect the optimization of performance and energy consumption used. This research aims to modify the standard design of Ganesha Surface Water to obtain a design that has a value Coefficient of Drag minimum. In order to find out the value of the Coefficient of Drag, a fluid flow analysis simulation is needed, one of which is using Solidworks software. Solidworks software is known as software that has speed and accuracy in analyzing. This type of research is a Research and Development (R&D) using the R2D2 research model. After conducting the simulation process of fluid flow analysis. It is known that the modified design of the Ganesha Vehicle Surface Water has a value Coefficient of Drag 0.038 (28%) lower than the standard vehicle design. In comparison, the Ganesha Vehicle Surface Water's modified design has a value Coefficient of Drag 0.139 (38%) lower compared to standard worry designs. The modified Ganesha Surface Water design has received a score percentage of 86% with proper qualifications through expert judgment.Keywords: Aerodynamics; Coefficient of drag; Ganesha surface water; Solidworks software.DAFTAR RUJUKANAbdulah, M. (2016). Analisis Aerodinamis pada Permukaan Urban Concept Car SEM UI: “Kalabiya” dengan CFD. https://mahdiy.wordpress.com/2011/12/26/analisis-aerodinamis-pada-permukaan-urban-concept-car-sem-ui-kalabiya-dengan-cfd/Blocken, B., van Druenen, T., Toparlar, Y., Malizia, F., Mannion, P., Andrianne, T., Marchal, T., Maas, G. J., & Diepens, J. (2018). Aerodynamic drag in cycling pelotons: New insights by CFD simulation and wind tunnel testing. Journal of Wind Engineering and Industrial Aerodynamics, 179(June), 319–337. https://doi.org/10.1016/j.jweia.2018.06.011Daruwedho, H., Sasmito, B., & Amarrohman, F. (2016). Analisis Pola Arus Laut Permukaan Perairan Indonesia Dengan Menggunakan Satelit Altimetri Jason-2 Tahun 2010-2014. Jurnal Geodesi Undip, 5(2), 147–158.Hakim, R., & Nugroho, C. B. (2018). Desain dan Analisa Aerodimanika Dengan menggunakan Pendekatan CFD Desain dan Analisa Aerodimanika Dengan menggunakan Pendekatan CFD Pada Model 3D Untuk Mobil Prototype “ Engku Putri .” Jurnal Integrasi, 8(1 April 2016), 6–11. https://www.researchgate.net/publication/328899414_Desain_dan_Analisa_Aerodimanika_Dengan_menggunakan_Pendekatan_CFD_Pada_Model_3D_Untuk_Mobil_Prototype_Engku_PutriIskandar, A. (2018). Validitas isi menggunakan rumus Gregory. http://akbar-iskandar.blogspot.com/2018/01/validitas-isi-menggunakan-rumus-gregory.htmlMulia, H. (2019). Indonesia Menempati Posisi Ke-2 Penyumbang Sampah Plastik ke Laut. https://asumsi.co/post/indonesia-tempati-peringkat-dua-penyumbang-sampah-plastik-terbanyak-di-lautanPrihadnyana, Y., Widayana, G., & Dantes, K. R. (2017). Analisis Aerodinamika Pada Permukaan Bodi Kendaraan Mobil Listrik Gaski (Ganesha Sakti) Dengan Perangkat Lunak Ansys 14.5. Jurnal Pendidikan Teknik Mesin Undiksha, 5(2). https://doi.org/10.23887/jjtm.v5i2.11246Putra Krisnanandha, V., Dantes, K. R., & Nugraha, I. N. P. (2018). Analisis Aliran Fluida Pada Permukaan Bodi Kendaraan Listrik Ganesha Scooter Underwater Berbasis Software Solidworks. Jurnal Pendidikan Teknik Mesin Undiksha, 6(3), 121. https://doi.org/10.23887/jjtm.v6i3.18583Serana Jaya, G., Dantes, K. R., & Dantes, K. R. (2018). Analisa Pembebanan Statik Pada Rancangan Steering Knuckle Mobil Listrik Ganesha Sakti (Gaski). Jurnal Pendidikan Teknik Mesin Undiksha, 6(2), 88. https://doi.org/10.23887/jjtm.v6i2.14704Sugiyono. (2009). Metode Penelitian Pendidikan: Pendekatan Kuantitatif. Kualitatif. Dan R&D. Alfabeta.Tegeh, I. M. & I. M. K. (2010). Metode Penelitian Pengembangan Pendidikan. Undiksha.Tuakia, F. (2008). Dasar-dasar CFD Menggunakan FLUENT. INFORMATIKA.Willis, J. (1995). A recursive, reflective Instructional design model based on constructivist-interpretivist theory. Educational Technology Publications, Inc. Technology, 35(6), 5–23. https://www.jstor.org/stable/44428302?seq=1&cid=pdf-reference#references_tab_contents
Pengaruh Variasi Lilitan Pipa Kapiler pada Line Suction terhadap Laju Pendinginan dan Capaian Suhu Optimal Ruangan Prototype Trainer Lemari Pendingin Darmawan, Gede; Wiratmaja, I Gede; Elisa, Edi
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 1 (2021): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i1.12290

Abstract

This study aims to find the effect of variations in the capillary tube winding on the suction line on achieving optimal temperature and room cooling rate. This study uses three variations: the capillary tube without being wrapped around the suction line, the capillary tube wrapped in half on the suction line, and the capillary tube fully wound on the suction line. Specifically, the purpose of this study was to determine the effect of variations in the capillary tube wrapped around the suction line, which led to efforts to maintain the performance of the refrigerator trainer prototype. The method used in this study uses an experimental method where the data collection process is carried out through observation and documentation. The data analysis technique used in this study uses quantitative descriptive research techniques where the research data will be tabulated and displayed in the form of tables and graphs, and data analysis is carried out to find out how much influence the achievement of the optimal room temperature and the cooling rate of the prototype trainer refrigerator room itself. From the research that has been carried out, it is obtained that the highest optimal room temperature achievement occurs in the variation of the capillary tube fully wound on the suction line, where there is an increase in the optimal room temperature achievement of 16.17% when compared to the room cooling rate using standard variations or without being wrapped. And the result in the form of the highest room cooling rate is the variation of the capillary pipe fully wound on the suction line.
Analisis Pengaruh Variasi Jarak Katup Ekspansi Dengan Kondensor Terhadap Laju Pendinginan Ruangan Dan COP Mesin Pengkondisian Udara Tipe Split Air Conditioning Wiratmaja, I Gede; Widayana, Gede; Elisa, Edi
Jurnal Pendidikan Teknik Mesin Undiksha Vol 10, No 1 (2022)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v10i1.45806

Abstract

Penelitian ini merupakan jenis penelitian eksperimen yang bertujuan untuk memperoleh data - data unjuk kerja mesin pengkondisian udara tipe AC Split  berupa laju pendinginan ruangan dan COP (Coefficient Of Performance) pada setiap variasi jarak katup ekspansi dengan kondensor, untuk memberikan gambaran mengenai besarnya pengaruh variasi jarak katup ekspansi dengan kondensor terhadap performansi mesin pengkondisian udara.  Hal ini dilakukan dalam usaha untuk menjaga kinerja dari mesin serta memperpanjang usia pemakaian (lifetime). Penelitian ini dilakukan di laboratorium Teknik Pendingin, Program Studi Pendidikan Teknik Mesin Universitas Pendidikan Ganesha. Metode yang akan digunakan dalam penelitian ini adalah metode eksperimental yang dalam proses pengambilan datanya menggunakan teknik pengumpulan data melalui observasi langsung dilapangan, dokumentasi penelitian dan teknik analisa data menggunakan teknik penelitian deskriptif kuantitatif untuk mendeskripsikan atau memberikan gambaran secara sistematik terhadap fenomena yang terjadi selama penelitian dan disajikan dalam bentuk grafik serta diberikan uraian analisis secara deskriptif kuantitatif. Dari hasil penelitian diperoleh beberapa hasil penting yaitu besarnya laju pendinginan ruangan meningkat seiring dengan semakin panjangnya jarak antara katup ekspansi dengan kondensor dimana laju pendinginan ruangan tertinggi diperoleh pada variasi jarak 2 meter antara katup ekspansi dengan kondensor yang mana diperoleh hasil sebesar 0,0875 Kj/s (meningkat 27,8% dibandingkan dengan kondisi standar). Sebaliknya terdapat trend penurunan COP (Coefficient Of Perfomance) dari mesin pengkondisian udara seiring dengan semakin panjangnya jarak kondensor dengan katup ekspansi, dimana COP (Coefficient Of Perfomance) terendah diperoleh pada variasi jarak 2 meter antara katup ekspansi dengan kondensor yang mana diperoleh hasil sebesar 33,15 (menurun 27,8% dibandingkan dengan kondisi standar). Kata kunci : Laju pendinginan ruangan, COP (Coefficient Of Performance), katup ekspansi, variasi jarak katup ekspansi  dengan kondensor This research is a type of experimental research that aims to obtain data - data on the performance of ac split air conditioning machine in the form of room cooling rate and COP (Coefficient Of Performance) on each variation of the expansion valve distance with the condenser, to give an idea of the magnitude of the influence of variations in the distance of expansion valves with condensers on the performance of air conditioning machines.  This is done in an effort to maintain the performance of the machine and extend the life of use (lifetime). This research was conducted in the Refrigeration Engineering laboratory, Mechanical Engineering Education Study Program of Ganesha Education University. The methods that will be used in this research are experimental methods that in the process of data collection using data collection techniques through direct observation in the field, research documentation and data analysis techniques using quantitative descriptive research techniques to describe or provide a systematic picture of the phenomena that occurred during the research and presented in the form of graphs and given a description of the analysis in a quantitative descriptive manner.  From the results of the study obtained some important results, namely the magnitude of the cooling rate of the room increases along with the longer the distance between the expansion valve and the condenser where the highest room cooling rate is obtained at a variation of 2 meters between the expansion valve and the condenser which obtained a result of 0.0875 Kj / s (an increase of 27.8% compared to standard conditions). Conversely, there is a downward trend of COP (Coefficient Of Perfomance) from air conditioning machines along with the longer the condenser distance with the expansion valve, where the lowest COP (Coefficient Of Perfomance) is obtained at a distance of 2 meters between the expansion valve and the condenser which obtained a result of 33.15 (decreased by 28,2 % compared to standard conditions).Keywords: Room cooling rate, COP (Coefficient Of Performance), expansion valve, variation of expansion valve distance with condenserDAFTAR RUJUKANAnwar, K., Arif, E., & Piarah, W. H. (2010). Efek Temperatur Pipa Kapiler Terhadap Kinerja Mesin Pendingin. Jurnal Mekanikal, 1, 30–39.Asroni, M., Widodo, B., & Bakti, D. (2015). Kaji Eksperimental Karakteristik Termodinamika Dari Pemanasan Refrigerant 12 Terhadap Pengaruh Pendinginan. Jurnal Flywheel, 6(1), 41–46.Darmawan, A. S., & Putra, A. B. K. (2017). Studi Eksperimen Pengaruh Dimensi Pipa Kapiler Pada Sistem Air Conditioning Dengan Pre-Cooling. Jurnal Teknik ITS, 5(2), 918–922. https://doi.org/10.12962/j23373539.v5i2.20263Jumadi, Aziz, A., & Mainil, R. I. (2016). Pendingin Siklus Kompresi Uap Hibrida Menggunakan Refrigeran R 22. Jom FTEKNIK, 3(2), 3–6.Nugroho, A. S. (2018). Analisa Pengaruh Panjang Pipa Dan Diameter Pipa Subcooler, Terhadap Unjuk Kerja Mesin Pendingin, Dengan Penambahan Subcooling. Publikasi Online MahasiswaTeknikMesin UNTAG Surabaya, 1(1).Rohit Joshi, Patil, V., Patil, A., & Koli, T. (2016). Experimental Analysis of Thermostatic Expansion Valve, Constant Expansion Device & Capillary Tube on Vapour Compression Refrigeration System. International Journal of Scientific Engineering and Applied Science (IJSEAS), 2(6), 356–360.Rosyadi, A. A., Prizkiabi, W., & Triono, A. (2019). Analysis the Length of Capillary Pipe with Separation Condenser on the Performance of Refrigerator using Double Evaporator. Proteksion, 4(1), 22–27.Siang, J. tangalajuk, Oskar, I., Sawati, H., & Yanto, F. (2017). Studi Eksperimen Pengaruh Perubahan Panjang Pipa Kapiler terhadap Unjuk Kerja Mesin Pendingin dengan R290. Seminar Nasional Riset Dan Teknologi Terapan, August, 230–238.Sunu, P. W., Made Rasta, I., Anakottapary, D. S., Made Suarta, I., & Cipta Santosa, I. D. M. (2018). Capillary Tube and Thermostatic Expansion Valve Comparative Analysis in Water Chiller Air Conditioning. Journal of Physics: Conference Series, 953(1). https://doi.org/10.1088/1742-6596/953/1/012063Wiratmaja, I. G., Dantes, K. R., & Artha, E. A. J. (2020). Peningkatan Laju Pendinginan Ruangan Dengan Media Pendingin Kombinasi Udara Dan Air Disisi Kondensor Pada Mesin Pendingin Tipe Split Air Conditioning. Jurnal Pendidikan Teknik Mesin Undiksha, 8(1), 1–8. https://doi.org/10.23887/jptm.v9i1.33220
Analisis Tingkat Kelayakan Prototype Kendaraan Electric Ganesha Disabilities (E-GADIS) Komala Dewi, Ida Ayu Putu Indah; Rihendra Dantes, Kadek; Elisa, Edi
Jurnal Pendidikan Teknik Mesin Undiksha Vol 10, No 1 (2022)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v10i1.43846

Abstract

Electric Ganesha Disabilities (E-Gadis) adalah sebuah produk kendaraan yang dikembangkan oleh mahasiswa Konsentrasi Otomotif Program Studi Pendidikan Teknik Mesin Angkatan ke-7 Universitas Pendidikan Ganesha . Jenis Penelitian yang dilakukan adalah Research and Development (R&D) dengan menggunakan model penelitian R2D2. Metode analisis yang digunakan dalam penelitian ini yaitu metode analisis deskriptif kuantitatif. Pengujian instrumen  dilakukan berdasarkan penilaian ahli isi dengan menggunakan Aiken yang terdiri 5 ahli, dilakukan uji coba instrumen dengan menggunakan 90 sampel. Berdasarkan hasil penelitian menunjukkan bahwa kualitas instrumen yang didapatkan hasil validasi isi secara keseluruhan terkategori sangat layak  dan validasi butir lapangan sebesar 0,86 dengan kriteria sangat tinggi dan instrumen keberterimaan sebesar 0,83 dengan kriteria sangat tinggi. Selanjutnya penilaian dari ahli manufaktur sebesar 89% dengan kriteria sangat layak dan ahli desain mendapat 87% dengan kriteria sangat layak, sedangkan uji coba lapangan kelompok kecil mendapat nilai persentase sebesar 90% dengan kriteria sangat praktis, uji coba kelompok besar mendapat nilai persentase sebesar 87,38% dengan kriteria sangat praktis. Hasil dari uji keberterimaan mendapat nilai persentase sebesar 87,57% dengan kriteria sangat praktis, sehingga kendaraan Electric Ganesha Disabilities (E-Gadis) dapat dikatakan layak berdasarkan hasil dari pengujian tingkat kelayakan dan dapat dilakukan penelitian lanjutan sebagai bentuk penyempurnaan dari produk Electric Ganesha Disabilities (E-Gadis) oleh peneliti selanjutnya. Kata kunci : instrumen; tingkat kelayakan; tingkat keberterimaan; microsoft excel; Electric Ganesha Disabilities (E-Gadis).Electric Ganesha Disabilities (E-Gadis) is a vehicle product developed by students of the Automotive Concentration Study Program of the 7th Generation Mechanical Engineering Education University of Ganesha Education. The type of research conducted is Research and Development (R&D) using the R2D2 research model. The analytical method used in this research is descriptive quantitative analysis method. Instrument testing was carried out based on the assessment of content experts using Aiken which consisted of 5 experts, the instrument was tested using 50 samples. Based on the results of the study, it shows that the quality of the instrument obtained from the content validation results is categorized as very feasible and the field item validation is 0.86 with very high criteria and the acceptance of the instrument is 0.83 with the highest criteria. Furthermore,  the assessment from manufacturing experts was 89% with the lowest descent criteria and design experts got 87% with very feasible criteria, while small group field trials got a percentage value of 90% with very partical criteria, large group trials got a percentage value of 87, 38% with very practical criteria. The results of the acceptan test got a percentage value of 87.57% with very practical criteria, so that the Ganesha Disabilities electric vehicle (E-Gadis) can be said to be feasible based on the results of the feasibility level test and further research can be carried out as a form of refinement of the Ganesha Disabilities electric product. (E-Gadis) by the next researcher. Keywords: instrument; feasibility level; acceptability level; microsoft excel; Electric Ganesha Disabilities (E-Gadis).DAFTAR PUSTAKAAiken, L. (1985). Three Coeffcient for Analyzing The Reliability and Validity of Ratings. Education and Psychological Measurement.Anastasi, A., Urbina, U. (1997). Psychological Testing. New Jersey Prentice-Hall.Inc.Azwar, S. (2012). Reabilitas dan Validitas (Edisi 4). Pustaka Belajar.Candiasa. (2004). Analisis Butir Disertai Aplikasi dengan ITEMAN, BIGSTEP dan SPPS. In Buku penunjang mata kuliah psikometri. Unit Penerbitan IKIP Negeri. https://scholar.google.co.id/citations?view_op=view_citation&hl=en&user=8af7Ny4AAAAJ&citation_for_view=8af7Ny4AAAAJ:1qzjygNMrQYCDantes, K. R. (2004). Analisa Stabilitas Arah Belok Kendaraan Tossa Hercules [Institut Teknologi Sepuluh Nopember]. http://digilib.its.ac.id/ITS-Undergraduate-3100004020800/11088 Sastrawan, D., G., O.,  Elisa, E., & Rihendra Dantes, K. (2021). Analisis dan Optimalisasi Aliran Fluida pada Prototype Kendaraan Ganesha Surface Water dengan Menggunakan Software Solidworks Fluid Flow Analysis And Optimization Of The Prototype Ganesha Vehicle Surface Water Using Solidworks Software. Jurnal Pendidikan Teknik Mesin Undiksha, 9(1). https://doi.org/10.23887/jptm.v9i1.33122 Jurusan, P. :, Elektro, T., Halu, U., Kendari, O., Tenggara, S., & Putra, H. (n.d.). Perancangan Sepeda Listrik Dengan Menggunakan Motor DC Seri. http://ojs.uho.ac.id/index.php/jfe/ Kemkominfo. (2017). 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Assessment Higher Education Perspective by Tenure of Lecturer Thesis Student Undergraduate: Elista Jefri Marzal; Edi Elisa; Pradita Eko Prasetyo Utomo; Dwi Agus Kurniawan; Muhammad Iqbal
Jurnal Pendidikan dan Pengajaran Vol 55 No 2 (2022): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jpp.v55i2.46228

Abstract

The problem that often occurs during lectures is the mismatch of time from the supervisor's response which becomes a very difficult challenge for students in doing their final project/thesis. The purpose of this study was to analyze the supervisor's response time in conducting thesis guidance using Elista which was differentiated based on years of service. This research is a mixed method research with explanatory design, where quantitative data is strengthened by qualitative data. The population in this study were lecturers with a sample selection technique using purposive sampling technique with the sample criteria being lecturers who had become student thesis supervisors so that a sample of 1270 lecturers was obtained which was grouped into 4 work intervals, namely 1-10 years, 11-20 years. years, 21-30 years, and 31-40 years. Data collection in this study was obtained through the Elista database regarding the supervisor's response time and through interviews with lecturers from each working period. Analysis of quantitative data using descriptive analysis and qualitative data using analysis of Miles and Huberman. The results showed that lecturers with 1-10 years of service and 11-20 years had better guidance response times than lecturers with longer tenures because lecturers with 1-10 years of service were more productive in using technology and strongly supported the fast response of supervisors. The implication of this research is that to speed up the travel time of student graduation, a good response from the supervisor is needed, where this response can also be distinguished by the tenure of the lecturer.
Analisis Penambahan Zat Aditif pada Bio Solar terhadap Opasitas Kendaraan Bermesin Diesel Hafid Ramadhan; Edi Elisa; I Gede Wiratmaja
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 2 (2022): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i2.13531

Abstract

This study aims to find out the effect of mixing biodiesel and additives with various kinds of mixtures on the exhaust gas opacity of a 4-stroke diesel engine. In this study, two variations of the ratio of the mixture of bio-diesel and additives were used, namely bio-diesel with a mixture ratio of 2.5%: 97.5% and a mixture ratio of 1.25%: 98.75% for additives and bio-diesel. The method used in this study uses an experimental method where the data collection process is carried out through observation and documentation. Data collection was carried out 5 times a repetition using the Opacity Smoke Meter tool. From the results of the study, the variation of the mixture of 2.5%: 97.5% resulted in the lowest average exhaust gas opacity value, where there was a decrease in exhaust gas opacity by 20.8% compared to standard conditions (without the addition of additives). From the results of this study, it can be concluded that there is an impact of adding additives to biodiesel on exhaust gas opacity where the more additives added to biodiesel will further reduce exhaust gas opacity in vehicles with diesel engines.
Lecturer Gender Perspective With Online Thesis Guidance Case Study Elista in Jambi University Jefri Marzal; Suwannit Chareen Chit; Edi Elisa; Pradita Eko Prasetyo Utomo; Dwi Agus Kurniawan; Rizka Octavia Sandra
Indonesian Journal on Learning and Advanced Education (IJOLAE) Vol. 4, No. 3, September 2022
Publisher : Faculty of Teacher Training and Education, Universitas Muhammadiyah Surakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/ijolae.v4i3.18059

Abstract

This research is a mixed method research using an explanatory design. The purpose of this study is to use Elista to assess a lecturer's response to thesis guidance based on the lecturer's gender. This study was condi-cted in Jambi University, involving 330 female and 359 male lecturers respectively. The sampling method used was purposive sampling technique, with the sample criterion being academics who became thesis su-pervisors. Interviews and surveys on Elista were conducted and the responses were gathered. The goal of this study is to establish a technology-based final project guidance system in which it is explored if the thesis supervisor's speedy response to guidance at Elista is affected by the gender of the thesis supervisor. The findings of the study demonstrate that female supervisors respond faster than male supervisors when em-ploying technology such as Elista to carry out the guidance procedure. Elista improves the effectiveness and efficiency of the guidance process between supervisors and students in terms of implementation.
Development of automotive basics learning module Sub-Subject Special Service Tools (SST) based on augmented reality I Gede Diva Sumarta Yana; Kadek Rihendra Dantes; Edi Elisa
Jurnal Pendidikan Teknologi dan Kejuruan Vol 28, No 2 (2022): (October)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jptk.v28i2.53099

Abstract

Based on preliminary research conducted in the Automotive Engineering class of SMK Negeri 3 Singaraja, it was found that the obstacles faced by students in the learning process were 90% of the 30 students stating that they did not have modules or other handbooks to learn the Special Service Tools (SST) sub-material. 73.3% stated that it was difficult to understand the material through teaching materials and methods applied by the teacher, so that students had difficulty in understanding how to use the types of Special Service Tools (SST) according to their functions. 90% of students stated that they were very happy and interesting if the learning activities of the Special Service Tools (SST) sub-material were presented using learning media that varied with audio, visual, audio-visual media. This research produced learning media in the form of Augmented Reality-based modules that can be accessed individually with a smartphone device to display 3-dimensional objects of the Special Service Tools (SST) type and how to use them. The research method used is research and development using the ADDIE model which consists of analysis, design, development, implementation, evaluation. The results of this study show that the learning module automotive basics sub subject Special Service Tools (SST) based on augmented reality is stated to be very feasible and very practical to use. The percentage of material experts, media experts, small and large group trials are 93%, 87.89%, 88.55% and 90.83% which are categorized as very feasible and very practical.
Pengembangan Video Pembelajaran Perawatan Kendaraan Ringan Bermuatan Nilai Karakter Untuk Siswa SMK Gede Arya Agung Prasmanta Yoga; Edi Elisa; Dr. Kadek Rihendra Dantes
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 11 No. 1 (2023)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract This study aims to develop a light vehicle maintenance learning video containing character values, and to test the feasibility and practicality of the learning video. This research belongs to the type of Research and Development (R&D) research with the Hannafin and Peck development model. The instruments used in data collection were questionnaires for material experts, media experts, and field trials. (a) The research script in the field trial is the students of SMK Negeri 3 Singaraja. The feasibility level is obtained based on the assessment of media experts, material experts, with a percentage with a percentage value of (1) Material experts getting a score of 96.5%, (2) Media experts with a percentage value of 89.16%. The level of practicality can be based on small group trials and large group trials, with a percentage value of (1) Small group trials obtaining a value of 84.5%, (2) large group trials obtaining a percentage value of 86.93%. Based on these results, it can be stated that this media is very feasible in terms of material, and media, as well as practical to use based on responses from respondents, so that this media can be used as a learning medium for light vehicle maintenance that is suitable for use as a learning medium. Keywords : Learning Media, Video, Light Vehicle Maintenance, Character Value.
Co-Authors Adisantosa, I Gede Wahyu Denata Affan Malik Alim, Khairul Artayasa, Putu Budi Darmawan, Gede Dwi Agus Kurniawan Dwipa, Ketut Arya Fadli, Amril Galang Kawih Gede Arya Agung Prasmanta Yoga Gede Widayana Gede Widayana Gusmanely Z Hafid Ramadhan I Gede Diva Sumarta Yana I Gede Wiratmaja I Made Pasek Budi Susila I Nyoman Pasek Nugraha I Putu Heri Yudistira Jefri Marzal Jefri Marzal Kadek Rihendra Dantes Komala Dewi, Ida Ayu Putu Indah Made Widya Sarasta Mardhotillah, Bunga Muhammad Iqbal Multahadah, Cut Pitnelly Pitnelly Rayandra Asyhar Revis Asra Rizka Octavia Sandra Rodhiyah, Zuli Sastrawan, Dewa Gede Oka Sri Wahyuni Susanto, Gede Resta Ervan Suwannit Chareen Chit Syamsyida Rozi Utomo, Pradita Eko Prasetyo Wardi Syafmen Zurweni Zurweni Zurweni