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All Journal Abdimas Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Sainteknol : Jurnal Sains dan Teknologi Journal The Winners Majalah Ilmiah MOMENTUM Binus Business Review Jurnal Rekayasa Mesin JITEK (Jurnal Ilmiah Teknosains) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Angkasa: Jurnal Ilmiah Bidang Teknologi KACANEGARA Jurnal Pengabdian pada Masyarakat Adimas : Jurnal Pengabdian Kepada Masyarakat Pena Justisia: Media Komunikasi dan Kajian Hukum Istinbath : Jurnal Hukum Journal of Educational Review and Research International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Pendidikan dan Teknologi Indonesia Jurnal Pemberdayaan Masyarakat Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Jurnal Penelitian Hukum Indonesia (J-PeHI) SASI Jurnal Polimesin Bina Bangsa International Journal of Business and Management Jurnal Pendidikan Teknik Mesin
Kriswanto Kriswanto, Kriswanto
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Semarang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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Efektifitas Multimedia dalam Capaian Belajar Kognitif Siswa pada Pembacaan Jangka Sorong Ketelitian 1/128, 1/1000 Inci Putrarisna, Helmy Citra Ramadhani; Khumaedi, Muhammad; Samsudi, Samsudi; Kriswanto, Kriswanto
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v5i4.766

Abstract

Teaching material on vernier calipers with 1/128 inch and 1/1000 inch precision in Vocational High Schools (SMK) faces numerous challenges due to technical complexity and limitations in visualizing conventional media. This research aims to quantitatively analyze the effectiveness of Audio-Visual-based learning media in enhancing student comprehension. The study employed a pretest-posttest control group design experimental method involving 30 students from the Motorcycle Engineering expertise program at SMK Muhammadiyah 2 Semarang. The participants were divided into two groups: an experimental group (using multimedia) and a control group (using conventional methods). The research instruments were validated by media and material experts, with results indicating high feasibility and reliability (CVR > 0.75, percent agreement of 95% for media and 94% for material). The results of the effectiveness test prove that the average post-test score of the experimental group was significantly higher than the control group, evidenced by an independent samples t-test (t = 7.641, p = 0.000 < 0.05). The N-Gain analysis also showed a significant difference, with the experimental group experiencing an increase in the high category (68%), while the control group only reached the Low category (27%). This demonstrates that the use of interactive visual media is effective in improving students' conceptual understanding and measurement skills. From these results, it can be concluded that PowerPoint-based audio-visual multimedia is proven to be significantly effective in improving student learning outcomes, particularly for material that is visual and complex. This finding supports the implementation of multimedia learning theory within the context of vocational education.
Taguchi-based optimization of CNC turning parameters to enhance surface finish of AISI 1045 steel Kriswanto, Kriswanto; Briantoro, Oktova Yusuf; Naryanto, Rizqi Fitri; Priyanto, Kaleb; Jamari, Jamari; Setiyawan, Andri
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7107

Abstract

Surface roughness is a critical indicator of machining quality, directly affecting the functional performance and service life of manufactured components. This study aims to optimize the surface roughness of AISI 1045 steel by varying parameters (cutting speed, feed rate, and depth of cut) using Taguchi L9 orthogonal array. Experiments were conducted on a FANUC 0i-Mate CNC lathe using Al-TiN-coated VNMG inserts. Moreover, the surface roughness was measured in accordance with ISO standards. Analysis of Variance (ANOVA) revealed the depth of cut was the most influential factor (45.21%), followed by cutting speed and feed rate. The Signal-to-Noise (S/N) ratio was identified as optimal surface roughness of 0.323 µm (N5 grade) at the parameter, with a cutting speed of 240 mm/min, a feed rate of 0.2 mm/rev, and a depth of cut of 0.6 mm. The novelty of this study is the demonstration that Taguchi's design and ANOVA combined can achieve reliable optimization results with considerably reduced experimental effort and offer practical industrial deployment, including for Small and Medium-sized Enterprises (SMEs). 
Pengaruh Feed Rate pada Friction Stir Welding Polypropylene Menggunakan Tool Aluminium 7075 Terhadap Kekuatan Tarik dan Lentur Masruhan, Fahmi Irsad; Budi Darsono, Febri; Kriswanto, Kriswanto; Sibro Malisi, Muhammad
Jurnal Pendidikan dan Teknologi Indonesia Vol 5 No 12 (2025): JPTI - Desember 2025
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpti.1278

Abstract

Friction Stir Welding (FSW) merupakan metode penyambungan fase padat yang efektif untuk material termoplastik seperti Polypropylene (PP), terutama dalam industri otomotif dan manufaktur ringan. Tantangan utama dalam penerapannya pada polimer adalah pengendalian parameter proses, Khususnya kecepatan pengelasan (feed rate), yang memengaruhi kualitas sambungan. Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi feed rate terhadap kekuatan tarik dan lentur pada sambungan polypropylene yang dibentuk melalui proses friction stir welding (FSW). Proses dilakukan dengan menggunakan mesin frais, dengan tool berbahan aluminium 7075 dan pin silinder ulir. Variasi feed rate sebesar 15, 20, dan 25 mm/menit diterpakan dengan kecepatan putar konstan 1460 rpm dan sudut kemiringan 0°. Evaluasi dilakukan melalui pengujian tarik (ASTM D638), lentur (ASTM D790), serta pengamatan makro terhadap stir zone. Hasil menunjukkan bahwa feed rate 15 mm/menit menghasilkan stir zone yang paling homogen dengan cacat internal yang rendah dan kekuatan tarik tertinggi sebesar 13,485 MPa, setara efisiensi sambungan 44,06%. Sementara itu, kekuatan lentur tertinggi sebesar 15,179 MPa dicapai pada feed rate 25 mm/menit, dengan efisiensi lentur sebesar 32,1%. Feed rate tinggi cenderung menyebabkan cacat seperti void dan incomplete fusion akibat distribusi panas yang tidak merata serta plastisitas material yang tidak optimal. Penelitian ini berkontribusi pada pengembangan parameter friction stir welding untuk material polimer, khususnya melalui penerapan tool berbahan aluminium 7075 yang masih jarang dilaporkan dalam literatur dan dapat menjadi acuan untuk optimasi proses di sektor industri termoplastik.
Penerapan Multimedia Pembelajaran Interaktif Berbasis PowerPoint untuk Meningkatkan Hasil Belajar pada Teknik Dasar Pengelasan SMAW di SMK IPT Karangpanas Kota Semarang Samudra, Bahrun; Khumaedi, Muhammad; Kriswanto, Kriswanto
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i1.819

Abstract

This study aims to analyze the effectiveness of interactive learning multimedia based on PowerPoint in improving students’ learning outcomes in the subject of Basic SMAW Welding Techniques at SMK IPT Karangpanas, Semarang City. The study employed a quantitative approach using a quasi-experimental design with a nonequivalent control group design type. The participants consisted of 60 tenth-grade students majoring in welding engineering, divided into two groups: an experimental group taught using interactive PowerPoint multimedia and a control group taught through conventional methods. Learning achievement data were collected using validated and reliable pretest and posttest instruments. Data were analyzed using t-tests and Normalized Gain (N-Gain) analysis. The results revealed a significant difference between the experimental and control groups, with mean posttest scores of 80.67 and 70.53, respectively (p < 0.001). The experimental group achieved an N-Gain value of 0.5639 (high category), while the control group achieved 0.3475 (moderate category). These findings indicate that interactive learning multimedia based on PowerPoint effectively enhances students’ learning outcomes. The media proved to be a practical, low-cost, and engaging alternative that bridges the limitations of conventional learning and supports vocational education improvement.
Integrasi Autodesk Inventor dan Media 3D PowerPoint Berbasis Animasi Morph Transition dalam Meningkatkan Kompetensi Gambar Teknik Siswa SMK IPT Karangpanas Irsandi, Ridho Fajar; Cahyanto, Septian Eko; Kriswanto, Kriswanto
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i1.822

Abstract

This study aims to analyze the effect of integrating Autodesk Inventor and Morph 3D PowerPoint on students’ learning outcomes in the Engineering Drawing subject at SMK IPT Karangpanas. A true experimental design with a pretest–posttest control group was employed, involving an experimental class (n = 18) and a control class (n = 19). The test instrument was validated by experts and categorized as “highly feasible,” with strong reliability based on the percentage of agreement. The pretest results showed a significant difference between the two groups; therefore, the learning effectiveness analysis focused on the N-Gain score. Findings indicate that the experimental group achieved medium improvement, whereas the control group showed low improvement. The Mann–Whitney test was used due to the non-normal distribution of the data, resulting in U = 2.000, Z = –5.222, and p = 0.000, confirming a significant difference in the posttest scores between the groups. These results demonstrate that the integration of 3D-based visualization media enhances students’ spatial representation skills more effectively than conventional 2D media. Practically, this study offers an alternative instructional media that vocational teachers can use to clarify object-view concepts and improve the effectiveness of engineering drawing instruction.
DIGNIFIED JUSTICE PRESPECTIVE ON THE DEVELOPMENT OF MILITARY LAW IN INDONESIA: WHAT AND HOW? Kriswanto, Kriswanto
Pena Justisia: Media Komunikasi dan Kajian Hukum Vol. 23 No. 1 (2024): Pena Justisia
Publisher : Faculty of Law, Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/pj.v23i1.4782

Abstract

Military law in Indonesia plays a crucial role in maintaining the country's order and security, with the perspective of dignified justice being highly relevant to ensure the protection of human rights for soldiers and justice in military legal processes. This research aims to analyze the development of military law in Indonesia from the perspective of dignified justice, as well as to identify challenges and opportunities in integrating the principles of dignified justice into the Indonesian military legal system. This study employs normative legal research methods with a conceptual and legislative approach. Data sources include primary, secondary, and tertiary legal materials collected through literature studies, then qualitatively analyzed using deductive-inductive reasoning to understand the concept of dignified justice and its application in Indonesian military law. The research findings indicate that the development of military law in Indonesia, viewed from the perspective of dignified justice, shows a complex and dynamic evolution since the era of independence. Continuous efforts are being made to build a military legal system that aligns with the principles of democracy, human rights, and the rule of law, as reflected in regulatory changes such as Law No. 34/2004 and Law No. 25/2014. Although there are still challenges in implementation, particularly related to military court jurisdiction, gender equality, and balancing national defense interests with individual rights protection, these developments reflect the efforts to realize dignified justice in the military context. This process also opens significant opportunities, including comprehensive military law reform, strengthening military professionalism, and developing a more humanistic military doctrine, although it still requires continuous evaluation and refinement to achieve a balance between national security and respect for human dignity.
Otomatisasi pengingat waktu sholat dan ketersediaan air di SMP IT Mutiara Hati Al-Janan, D. H.; Bahatmaka, A.; Kriswanto, Kriswanto; Firmansyah, H. N.; Setiadi, R.
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 1 (2026): February
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i1.34231

Abstract

Abstrak SMP IT Mutiara Hati, Ngijo, Gunungpati, Semarang merupakan sekolah berbasis Islam, yang dipadukan pula dengan pondok tahfidz. Masalah yang mengemuka, pengingatan untuk masuk waktu masih berpedoman pada suara masjid lain disekitarnya, padahal sebagai sekolah, untuk pelaksanaan waktu sholat berjamaah perlu menyesuaikan dengan jadwal sekolah. Sementara itu, pelaksanaan sholat juga sering terganggu karena ketersediaan air di tandon, karena belum adanya otomatisasi pengisian. Dua permasalah utama tersebut, menjadi dasar kegiatan pengabdian ini dengan focus kegiatan pengadaan jam waktu sholat (JWS) yang mampu bekerja dengan otomatis, mudah dikendalikan sehingga dapat memberikan informasi lain terkait dengan kegiatan belajar. Sementara itu, permasalahan ketersediaan air di tandon mampu diselesaikan melalui hybrid otomatisasi yang menjamin keterisian dua tandon air dengan elevasi ketinggian yang berbeda dan bersumber dari satu pompa. Dari hasil kegiatan ini menghasilkan, ketersediaan air bersih dapat terjaga serta para santri lebih mudah dalam menentukan waktu sholat. Kata kunci: SMP IT Mutiara Hati; JWS; hybrid otomatisasi Abstract SMP IT Mutiara Hati, Ngijo, Gunungpati, Semarang is an Islamic-based school, which is also combined with a tahfidz boarding school. The problem that emerged was that the reminder to enter the praying time was still guided by the adzan of other mosques around it, whereas as a school, the implementation of congregational praying times needed to be adjusted to the school schedule. Meanwhile, the implementation of prayers was also often disrupted due to the availability of water in the reservoir, because there was no automation of filling. These two main problems became the basis for this community service activity with the focus of the activity of procuring prayer time clocks (JWS) that were able to work automatically, were easy to control so that they could provide other information related to learning activities. Meanwhile, the problem of water availability in the reservoir was able to be solved through hybrid automation which guaranteed the filling of two water reservoirs with different elevations and sourced from one pump. This activity resulted that the availability of clean water being maintained and the students being easier to determine prayer times. Keywords: SMP IT Mutiara Hati; JWS; hybrid automation
KEEFEKTIFAN PROJECT BASED LEARNING UNTUK MENINGKATKAN KOMPETENSI TEKNIK PEMESINAN BUBUT DI SMK NEGERI 5 SEMARANG Maulana, Aditya; Rohman, Shohihatur; Kriswanto, Kriswanto
Journal of Educational Review and Research Vol 9, No 1 (2026): VOLUME 9 NUMBER 1 JULY 2026
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/jerr.v9i1.8830

Abstract

Penelitian ini bertujuan untuk mengetahui keefektifan penerapan model pembelajaran Project Based Learning (PjBL) dalam meningkatkan kompetensi teknik pemesinan bubut siswa kelas XI Teknik Pemesinan di SMK Negeri 5 Semarang. Penelitian menggunakan pendekatan deskriptif kuantitatif dengan desain pre-eksperimen tipe one-group pretest–posttest. Sampel penelitian berjumlah 36 siswa yang dipilih menggunakan teknik purposive sampling. Instrumen penelitian berupa penugasan penyusunan jobsheet perencanaan pengerjaan bubut yang digunakan sebagai pretest dan posttest. Analisis data dilakukan secara deskriptif serta inferensial menggunakan uji normalitas Shapiro–Wilk, uji t berpasangan (paired sample t-test), dan uji N-Gain untuk mengukur tingkat efektivitas pembelajaran. Hasil penelitian menunjukkan bahwa nilai rata-rata siswa meningkat dari 54,36 pada pretest menjadi 82,14 pada posttest. Hasil uji hipotesis menunjukkan nilai t hitung sebesar 23,023 lebih besar dari t tabel 2,03 pada taraf signifikansi 0,05, sehingga terdapat perbedaan yang signifikan antara hasil belajar sebelum dan sesudah penerapan PjBL. Selain itu, nilai N-Gain sebesar 60,65% menunjukkan bahwa penerapan PjBL berada pada kategori cukup efektif dalam meningkatkan kompetensi pemesinan bubut siswa. Dengan demikian, model pembelajaran Project Based Learning dapat menjadi alternatif strategi pembelajaran yang efektif dalam meningkatkan kompetensi siswa pada pembelajaran teknik pemesinan bubut di SMK.
Co-Authors Abdul Latif Aditya Maulana, Aditya Agustinus Purna Irawan Ahmad Athoillah Ahmad Roziqin, Ahmad Ainun Athar, Muhammad Al-Janan, D. H. Aldias Bahatmaka Alrasyid, Mochamad Dzaki Andri Setiyawan Apristia, Lelu Dina Apriyanto, Rahmat Arimaz Hangga, Arimaz Aripin, Muhammad Bustanul Ayus ahmad Yusuf Azara, Salsa Bila Azmi, Muhammad Aldy Naufal Bahatmaka, A. Bayu Wiratama, Bayu Briantoro, Oktova Yusuf Budi Darsono, Febri Budi Darsono, Febri Budi Cahyanto, Septian Eko Cionita, Tezara Darsono, Febri Budi Dimyati, Saeful Dony Hidayat Al-Janan Eko Cahyanto, Septian Eko Saputro, Wahyu Danang Firmansyah, H. N. Fitriyana, Deni Fajar Hadikawuryan, Danang Subarkah Hadikawuryan, Danang Subarkah Handriaswara, Handriko Harits, Muhammad Harsandi, Zaidan Priya Hendrix Noviyanto Firmansyah, Hendrix Noviyanto Huda, Muhammad Maftahul Husna, Ucu Husna Imanu Danar Herunandi Indriawan, Ari Dwi Nur Irsandi, Ridho Fajar J. Jamari Karsan, Karsan Khakim, Faisal Khoirudin Fathoni, Khoirudin Khoirul Huda Kuntoro Mursit G., R. Ambar Kurniawan, Maskun Laksono Trisnantoro Laksono, Galih Tri M. Fatchurrochman, M. Maryono Maryono Masruhan, Fahmi Irsad Mera Kartika Delimayanti Muhammad Khumaedi Mulyati, Dede Musyono, Ari Dwi Nur Indriawan Nugraha, Amhar Rais Nugroho, Ananda Tri Bintang Nurbani, Siti Nurdiansyah, Fahmi Nuryanta, Muhammad Irfan Prasdika, Tegar Oki Prasetyo, Ares Yudi Prasojo, Krisna Tri Priya Harsandi, Zaidan Priyanto, Kaleb Putra, Afiq Junia Putrarisna, Helmy Citra Ramadhani Ramadhani, Risky Ria Wulansarie, Ria Rifqi, M. Irfan Ririn Febrina, Ririn Rizqi Fitri Naryanto Rizqi, Alda Rifada Rohman, Shohihatur Rohmatullah, Rizal Roizzy, Fakhrudin Ahmad Ruben Bayu Kristiawan Rusiyanto Rusiyanto, Rusiyanto Safriana, Eni Samsudi . Samudra, Bahrun Satriawan, Yudha Setiadi, R. Setiadi, Rizki Sholahuddin Al Ayubi Sibro Malisi, Muhammad Siregar, Januar Parlaungan Siswahyudianto SRI RAHAYU Subarkah, Danang Sukoco, Imam Sunyoto Sunyoto Tabriwindarta, Agus Ruhban TriLaksono, Galih Wawan Kurniawan Wijayanto, Bagus Wirawan Sumbodo Yusuf Subagyo Zaelani, Alfian Rifky Zakky Mubarok, Muhammad