Article

Dwi Widjanarko, - and Muhammad Khumaedi, - and Ahmad Roziqin, - and Adhetya Kurniawan, - (2022) Online Learning for Vocational Education: Students’ Difficulties and Advantages in Automotive Electrical System Subject and General Issues. Proceedings of the 4th Vocational Education International Conference (VEIC 2022). pp. 313-321. ISSN 2352-5398

Dwi Widjanarko, - (2021) The Production Unit of the State Vocational High School 1 Warungasem the Department of Motorcycle Engineering and Business. Journal of Vocational Career Education, 6 (2). pp. 181-188. ISSN p-ISSN 2339-0344 e-ISSN 2503-2305

Dwi Widjanarko, - (2021) EVALUATING THE IMPACT OF AUDIO-VISUAL MEDIA ON LEARNING OUTCOMES OF DRAWING ORTHOGRAPHIC PROJECTIONS. International Journal of Education and Practice, 9 (3). pp. 613-624. ISSN ISSN(e): 2310-3868 ISSN(p): 2311-6897

Muhammad Khumaedi, FT P Teknik Mesin and Dwi Widjanarko, - and Rizki Setiadi, - and Andri Setiawan, - (2021) Evaluating The Impact Of Audio-Visual Media On Learning Outcomes Of Drawing Orthographic Projections. International Journal of Education and Practice, 9 (3). pp. 613-624. ISSN 2311-6897

Dwi Widjanarko, - and S Azhar, - and Megawati, FT Teknik Kimia (2021) Soursop leaf extract as biodiesel antioxidant and the effect on automotive diesel engine performance. The 9th Engineering International Conference IOP Conf. Series: Earth and Environmental Science.

Ratna Dewi Kusumaningtyas, - and Dwi Widjanarko, - (2020) Effect of Ceiba pentandra Biodiesel/Dexlite Diesel Blends on the Four-Stroke Diesel Engine Performances. IOP Conference Series: Materials Science and Engineering 2021, 1096. pp. 1-6. ISSN ISSN (P): 1757-8981 ISSN (e): 1757-899X

Ratna Dewi Kusumaningtyas, - and Dwi Widjanarko, - and Haifah, - and H Prasetiawan, - (2020) Experimental and kinetic study of free fatty acid esterification derived from Ceiba pentandra seed oil with ethanol. Journal of Physics: Conference Series 2021, 1918 (3). pp. 1-6. ISSN ISSN (P): 1742-6588 ISSN (e): 1742-6596 ISBN : 978-0-7354-1971-1

Dwi Widjanarko, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Ahmad Afwan Fathoni, - (2020) Alteration of Biodiesel Properties and Automotive Diesel Engine Performance due to Temperature Variation of the Transesterification Process. Jurnal Rekayasa Kimia dan Lingkungan, 15 (2). ISSN 1412-5064

Megawati, Megawati and Fardhyanti, Dewi Selvia and Dwi Widjanarko, - (2020) Kinetics of soursop leaves antioxidant extraction using microwave- assisted extraction. IOP Conf. Series: Earth and Environmental Science, 572. ISSN 1755-1315

Dwi Widjanarko, - (2020) Perbandingan Prestasi Motor Bensin 4 Langkah 100 cc Menggunakan Koil Standar dan Koil Variasi. JURNAL TEKNIK ITS, 9 (1). pp. 111-117. ISSN 2337-3539 (2301-9271 Print)

Dwi Widjanarko, - and Rodia Syamwil, - and Adi Nova Trisetiyanto, - (2019) The Influence of Young Entrepreneur School (YES) Training Model on Knowledge, Attitude and Employee Skills Competence. Journal of Vocational Career Education, 4 (2). pp. 133-141. ISSN p-ISSN 2339-0344 e-ISSN 2503-2305

Ratna Dewi Kusumaningtyas, - and Dwi Widjanarko, - (2019) Synthesis of Biodiesel from Kapok (Ceiba pentandra L.) Seed Oil through Ultrasound-Enhanced Transesterification Reaction. AIP Conference Proceedings 2020, 2217 (1). pp. 1-9. ISSN ISSN (P): ‎0094-243X ISSN (e): 1551-7616 ISBN : 978-0-7354-1971-1

Dwi Widjanarko, - (2019) PENGEMBANGAN JOBSHEET PRAKTIKUM SISTEM PENGAPIAN UNTUK MENINGKATKAN HASIL BELAJAR SISWA (DEVELOPMENT OF JOBSHEET PRACTICUM IGNITION SYSTEM TO IMPROVE STUDENT LEARNING OUTCOMES). Jurnal Pendidikan Teknik Mesin, 19 (1). pp. 51-56. ISSN 1412- 1247 e-ISSN 2503-1759

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Muhammad Hafizt Akbar, - and Dwi Widjanarko, - (2019) Reduction of FFA in Kapok Randu (Ceiba pentandra) Seed Oil via Esterification Reaction Using Sulfuric Acid Catalyst: Experimental and Kinetics Study. Jurnal Bahan Alam Terbarukan, 8 (2). pp. 156-166. ISSN 2303- 0623

Dwi Widjanarko, - and Muhammad Khumaedi, - (2019) Validity and Reliability Test of Assessment Instrument of the Suitability of Electric Power Steering Media. Journal of Vocational Career Education, 4 (1). pp. 61-69. ISSN p-ISSN 2339-0344 e-ISSN 2503-2305

Muhammad Khumaedi, FT P Teknik Mesin and Sudarman, - and Dwi Widjanarko, - and Imam Sukoco, - (2018) Pembuatan Mesin Pengelupas Kedelai untuk Meningkatkan Produksi. Rekayasa, 16 (2). ISSN 0216-6631

Dwi Widjanarko, - (2018) PERBEDAAN UNJUK KERJA MESIN MENGGUNAKAN ELECTRONIC CONTROL UNIT TIPE RACING DAN TIPE STANDAR PADA SEPEDA MOTOR AUTOMATIC. Jurnal Dinamika Vokasional Teknik Mesin, 3 (2). pp. 138-143. ISSN 2598-392X

Dwi Widjanarko, - (2018) EFEKTIFITAS PENGGUNAAN MEDIA VIDEO TERHADAP HASIL BELAJAR SISWA PADA KOMPETENSI MEMAHAMI DAN MEMELIHARA SISTEM STARTER REDUKSI (THE EFFECTIVENESS OF USING VIDEO MEDIA ON STUDENT LEARNING OUTCOMES IN UNDERSTANDING COMPETENCE AND PRESERVING THE REDUCTION STARTER SYSTEM). Jurnal Pendidikan Teknik Mesin. pp. 10-13. ISSN 1412- 1247

Moch Taufiq Ichsan, - and Samsudin Anis , Teknik Mesin Unnes and Dwi Widjanarko, - (2018) Pengaruh Campuran Biodiesel Minyak Rumput Laut Gracilaria Verrucosa Dengan Bahan Bakar Solar Terhadap Unjuk Kerja Dan Emisi Gas Buang Mesin Diesel. Jurnal Teknik Mesin Indonesia,, 13 (1). pp. 12-15. ISSN 1412 - 1247

Monelis Widyatama, - and Muhammad Khumaedi, FT P Teknik Mesin and Dwi Widjanarko, - (2018) The Cooperation Form of SMK Karya Teknologi Jatilawang of Technology and Industry Group with Astro Parts in the Framework of Forming an Entrepreneurial Spirit. Journal of Vocational Career Education, 3 (2). pp. 153-159. ISSN 2339-0344

Dwi Widjanarko, - (2018) Implementation Effect of Productive 4-Stage Field Orientation on the Student Technopreneur Skill in Vocational Schools. AIP Conference Proceedings 1941, 020020 (2018). ISSN 978-0-7354-1633-8

Dwi Widjanarko, - (2018) Increasing vocational school students’ competency of automotive brake system by implementing diagnostic problem-based e-jobsheet. Journal of Physics: Conference Series ICoVEMAT 2018. pp. 1-10. ISSN 1742-6588

Dwi Widjanarko, - and Abdurrahman, FT Pendidikan Teknik Otomotif and Wahyudi, - and Herminarto Sofyan, - and Herman Dwi Surjono, - (2018) Ldesv, Computer-Operated Video: Overcoming Students Difficulties In Understanding Automotive Starting System. Int. J. Innovation and Learning,, 24 (4). ISSN 1741-8089

Dwi Widjanarko, - (2018) Penggunaan Serbuk TiO2 dan Karbon Aktif Sebagai Campuran Bahan Catalytic Converter Keramik untuk Mengurangi Polutan Berbahaya pada Kendaraan Bermesin Bensin. Jurnal Rekayasa Kimia dan Lingkungan, 13 (2). pp. 165-173. ISSN 1412-5064, e-ISSN 2356-1661

Faizal Fakhri, - and Hadromi, FT Pendidikan Teknik Otomotif and Dwi Widjanarko, - (2018) Practical Learning Model Assisted by Mobile Workshop for Enhancing Practical Skills and Entrepreneurial Spirit for Prospective Vocational High School Graduates. Journal of Vocational Career Education, 3 (2). pp. 106-114. ISSN 2339-0344

Dwi Widjanarko, - (2017) Development of Technopreneurship Learning Model in Vocational High School Machinery Program. Journal of Vocational and Career Education. pp. 18-26. ISSN p-ISSN 2339-0344 e-ISSN 2503-2305

Dwi Widjanarko, - and Sugiyono, - (2017) PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN MEDIA GAMBAR DENGAN MENGGUNAKAN MEDIA VIDEO PADA PRAKTIK SISTEM PENGISIAN (THE COMPARISON OF STUDENT LEARNING OUTCOMES USING IMAGES MEDIA WITH USING VIDEO MEDIA IN FILLING SYSTEM PRACTICES). Jurnal Pendidikan Teknik Mesin, 17 (2). pp. 109-114. ISSN 1412- 1247

Dwi Widjanarko, - and Febrian Arif Budiman, - (2017) Pengembangan Lembar Kerja Praktik Analitik bagi Calon Guru SMK Otomotif. Journal of Vocational and Career Education, 2 (1). pp. 50-56. ISSN p-ISSN 2339-0344 e-ISSN 2503-2305

Dwi Widjanarko, - (2016) IMPROVING STUDENTS’ MASTERY ON AUTOMOTIVE ELECTRICAL SYSTEM USING AUTOMOTIVE ELECTRICAL MULTIMEDIA. Research and Evaluation in Education, 2 (1). pp. 71-78. ISSN e: 2460-6995

Dwi Widjanarko, - and Dzikie Agung Prasetyo, - (2015) PENERAPAN MODEL PEMBELAJARAN INKUIRI UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA KOMPETENSI MEMELIHARA KOMPONEN SISTEM BAHAN BAKAR BENSIN. Jurnal Pendidikan Teknik Mesin, 15 (2). pp. 82-86. ISSN 1412- 1247

Dwi Widjanarko, - (2014) Kebutuhan Media Pembelajaran Kelistrikan Otomotif di Lembaga Pendidikan Pencetak Calon Guru Teknik Otomotif. Jurnal Pendidikan Teknik Mesin, 14 (1). pp. 18-24. ISSN 1412- 1247

Conference or Workshop Item

Dwi Widjanarko, - and Muhammad Khumaedi, FT P Teknik Mesin and R D Kusumaningtyas, - (2019) Continuous and integrated model of learning media and evaluation for vocational education application A case in automotive biodiesel learning materials. In: ICTVT 2019.

Febrian Arif Budiman, - and Dwi Widjanarko, - and Abdurrahman, FT Pendidikan Teknik Otomotif and Basyirun, - (2019) Implementation of the Critical Thinking Concept as an Efforts to Strengthen Automotive Electrical Charging System Competency. In: 1st Vocational Education International Conference (VEIC 2019), 19 Desember 2019, Semarang.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Muhammad Yasir Adhi Utomo, - and Pipit Risky Nurjanah, - and Dwi Widjanarko, - (2019) Synthesis of Biodiesel from Kapok (Ceiba Pentandra L.) Seed Oil through Ultrasound-Enhanced Transesterification Reaction. In: The 5th International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering 2019 (ICIMECE 2019), 17-18 September 2019, UNS Surakarta.

Abdurrahman, FT Pendidikan Teknik Otomotif and Dwi Widjanarko, - and Moeryanto, - (2018) Implementation of automotive skill competency test through discontinued model on vocational school students in Semarang. In: 5th ICMSE2018 Journal of Physics: Conference Series.

Dwi Widjanarko, - and Samsudin Anis , Teknik Mesin Unnes and Ahmad Roziqin, - (2017) Penguatan Kemampuan Analisis Kerusakan Komponen Sistem Starter Bagi Calon Guru Teknik Otomotif Dengan Multimedia Analisis Gangguan Sistem Starter. In: SEMINAR NASIONAL PENDIDIKAN VOKASIONAL (SNPV) 2017, 6 februari 2017, YOGYAKARTA.

Patent

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500202100468 (2021) Alat Pengolah Biodiesel Multi Kapasitas. 1DS000004552.

S00202106437 (2021) Alat Produksi Biodiesel dengan Reaktor Transesterifikasi Ganda. IDS000004599.

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