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All Journal Jurnal Pendidikan Vokasi TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan KACANEGARA Jurnal Pengabdian pada Masyarakat Buletin Ilmiah Sarjana Teknik Elektro Journal of Vocational Education Studies (JOVES) JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Indonesian Journal of Innovation Multidisipliner Research
Muchlas, Muchlas
Universitas Ahmad Dahlan
Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Physics Social Sciences Other

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Prototype of Automatic Sorting of Goods in Cosmetics Warehouse Aliim Muqaffi Siswanto; Muchlas Muchlas
Buletin Ilmiah Sarjana Teknik Elektro Vol. 4 No. 3 (2022): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v4i3.6919

Abstract

One of the tasks of the warehouse as a vital support unit for the distribution process and inventory of goods is sorting. Especially for cosmetic warehouses. Product sorting in warehouses so far is still done manually which can cause negligence and take time when collecting stored product data. A storage system is the process of placing and acquiring goods and products to and from a specific location within an industrial plant or warehouse. To solve this problem, the warehouse needs an automatic sorting tool. This allows employees to easily record products stored in warehouses without using a large number of staff. The method applied to this tool is microcontroller-based automation which includes hardware design in the form of conveyor design, flow charts, and board layouts. Software design includes listing code, block diagram explanations and system flowcharts. Testing system working tools such as barcode scanning, servo angle, infrared sensor and conveyor. The items used as experimental samples totaled 9 pieces with the categories of facial wash, lipstick, and shampoo. Based on the tests that have been carried out, the prototype of automatic sorting of goods is already working as expected.
Assessment of Night Sky Quality in Ganten Village, Kerjo District, Karanganyar: A Prospective Evaluation for the Establishment of the Falak Observatory Delta Rosiana; Yudhiakto Pramudya; Okimustava Okimustava; Muchlas Muchlas
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 9, No 1 (2023): Al-Marshad
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jam.v9i1.13545

Abstract

The establishment of an astronomical observatory requires a thorough evaluation of meteorological parameters and Night Sky Brightness Levels (NSBL). This research focuses on assessing the potential of Karanganyar as a site for astronomical education and new moon observations. To determine the NSBL in Karanganyar, satellite imagery was used, indicating favourable conditions. However, NSBL can be affected by light pollution and moon phases in specific locations. To complement the satellite data, additional measurements were taken using a Sky Quality Meter (SQM). The SQM values were processed using probability distribution analysis and showed a highest probability NSBL value of 17.22 mag/arsec2, while the maximum NSBL value reached 20.99 mag/arsec2. The NSBL derived from satellite data was 21.47 mag/arsec2. Our study shows that Karanganyar has predominantly high NSBL, suggesting low light pollution and excellent sky clarity in the region.
Kebiasaan Belajar Siswa Sekolah Menengah Kejuruan Saat Pandemi Covid-19 Di SMK Muhammadiyah Purwodadi Purworejo Kurnia Indriati*; Muchlas Muchlas; Muhammad Sayuti
JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Vol 8, No 3 (2023): Juni, socio-economics, community law, cultural history and social issues
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jimps.v8i3.25117

Abstract

Tujuan penelitian adalah untuk menganalisis (1) kebiasaan belajar siswa saat pandemi Covid-19 di SMK Muhammadiyah Purwodadi Purworejo, (2) respons guru dan (3) kepala sekolah terhadap perubahan kebiasaan belajar siswa saat pandemi Covid-19.Metode penelitian yang digunakan adalah kualitatif dengan pendekatan analisis tematik. Subjek penelitian ini terdiri dari perwakilan 9 orang siswa dari kelas yang berbeda, 4 guru dan kepala sekolah.Teknik pengumpulan data yang digunakan yaitu wawancara, observasi partisipan, dan dokumentasi. Hasil penelitian menunjukan bahwa; (1) kebiasaan belajar siswa SMK Muhammadiyah Purwodadi Purworejo saat pandemi Covid-19 meliputi penerapan strategi dan teknik pembelajaran yang dilakukan siswa, tujuan belajar siswa, cara menambah pengetahuan dan keterampilan lain saat dilakukan pembelajaran daring, suasana belajar sebelum dan selama pandemi Covid-19, sumber belajar yang dipakai sebelum maupun saat pandemi Covid-19, pengaturan diri, dan dukungan lingkungan belajar siswa. (2) respons guru dalam menghadapi perbedaan kebiasaan belajar siswa adalah dengan memberi beberapa masukan. Masukan tersebut antara lain berkaitan dengan aturan belajar, pemanfaatan media informasi digital dan fasilitas yang diberikan, memanfaatkan waktu belajar, persiapan belajar yang baik, merubah pola dan metode mengajar guru, guru melakukan pembelajaran yang menyenangkan, komunikatif, dan evaluasi. (3) respons kepala SMK Muhammadiyah Purwodadi dalam menghadapi perbedaan kebiasaan belajar siswa adalah mengambil kebijakan, melakukan blended learning, mengedepankan capaian kompetensi siswa, memberikan ruang konsultasi, keringanan biaya, pemenuhan fasilitas belajar, peenuhan sumber belajar, peningkatan kapasitas guru, dan melakukan evaluasi.
Development of a Blended Learning Model Based on Edmodo for PKL Students in Vocational High Schools Budhi Cahyono; Muchlas Muchlas; Edhy Susatya; Rivkih Amanulloh; Titania Allin Ayundha
Journal of Vocational Education Studies Vol. 9 No. 1 (2026): Vol 9 No 1
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/joves.v9i1.10449

Abstract

The purpose of this study was to develop an Edmodo-based blended learning model for street vendors in vocational high schools, analyze the feasibility of the model, and test its effectiveness. The study was conducted at SMK Muhammadiyah Sampang, Cilacap Regency, using a research and development (R&D) method based on the ADDIE model. The research design used a one-group pretest-posttest design. The development procedure included analysis, design, development, implementation, and evaluation stages. In the analysis stage, a student needs survey was conducted, while the design stage was adjusted to the learning needs. The next stage of development included validation by experts on the model and materials, and then the product was revised. Implementation was carried out on 60 students of grade XI in the Light Vehicle Engineering study program. The research results show that Edmodo-based blended learning is suitable as an alternative learning model, particularly to support internship activities. This model can be implemented according to a plan consisting of orientation, organization, investigation, analysis, and evaluation. In terms of effectiveness, student learning outcomes with Edmodo-based blended learning achieved an average of above 80, significantly different from the group not using Edmodo. Furthermore, this model can increase student motivation and learning independence. Based on these findings, the study recommends further development of the Edmodo-based blended learning model as a complement to face-to-face learning, especially in normative and adaptive subjects in vocational high schools.
Empowering pilgrims through digital literacy: Evaluating ritual understanding via mobile hajj applications at KBIHU Ahmad Dahlan Aris Rakhmadi; Susilo Hartono; Muchlas Muchlas; Anton Yudhana
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 9, No 1 (2026): February
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/kacanegara.v9i1.3059

Abstract

This community service initiative evaluates the impact of mobile applications, namely Haji Pintar–Satu Haji and Kawal Haji, in enhancing digital literacy and ritual understanding among pilgrims at KBIHU Ahmad Dahlan, Pringsewu. The program was implemented over a one-month period and involved participants engaging in mobile-based tutorials and mentoring activities designed to support comprehensive Hajj preparation. The learning materials focused on improving participants’ understanding of Hajj rituals while simultaneously strengthening their ability to use digital applications effectively. Survey results indicated that nearly all participants had access to Android smartphones, with 41.3% of respondents assessing their digital skills as “very good.” Among the available features, video tutorials were the most frequently accessed, accounting for 34.8% of usage, as they were perceived as clear and easy to understand. The majority of pilgrims reported improved comprehension of Hajj rituals after participating in the program. Despite these positive outcomes, several challenges were identified, including infrequent application usage, accessibility limitations for some users, and participant requests for offline learning content. Overall, the findings demonstrate the significant potential of mobile applications to support Hajj preparation through religious education and digital engagement. The study recommends further development through more inclusive application design, offline accessibility, and sustained digital engagement strategies to enhance the effectiveness of community outreach programs in religious education.
Studi Kelayakan Inisiasi Program Keahlian Perpajakan Sekolah Menengah Kejuruan Di Kabupaten Gunungkidul Nurfitri Herlinamurti; Muhammad Kunta Biddinika; Muchlas Muchlas
Indonesian Journal of Innovation Multidisipliner Research Vol. 4 No. 3 (2026): Juli - September
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijim.v4i3.1993

Abstract

Penelitian ini bertujuan untuk menganalisis persepsi guru dan siswa terhadap inisiasi Program Keahlian Perpajakan di Sekolah Menengah Kejuruan (SMK), serta potensinya sebagai alternatif untuk meningkatkan minat pendidikan vokasi bidang keuangan di Kabupaten Gunungkidul. Penelitian ini dilatarbelakangi oleh penurunan minat siswa terhadap program keahlian Akuntansi dan Keuangan Lembaga (AKL), sementara kebutuhan tenaga terampil di bidang perpajakan terus meningkat seiring kompleksitas regulasi dan digitalisasi pajak. Metode yang digunakan adalah kuantitatif dengan jenis survei deskriptif dan verifikatif melalui pendekatan cross-sectional. Subjek penelitian terdiri dari 34 guru akuntansi dan 120 siswa program keahlian AKL di Kabupaten Gunungkidul yang dipilih melalui purposive sampling. Data dikumpulkan menggunakan kuesioner tertutup berskala Likert 1-4 yang telah diuji valid dan reliabel, kemudian dianalisis dengan statistik deskriptif, uji asumsi klasik, regresi linear berganda, uji hipotesis (uji t dan uji F), serta uji beda persepsi (independent sample t-test). Hasil penelitian menunjukkan bahwa persepsi guru (mean 3,25) dan persepsi siswa (mean 3,01) terhadap inisiasi program berada pada kategori tinggi. Analisis regresi menghasilkan persamaan Y = 1,271 + 0,392X1 + 0,630X2, dengan persepsi guru dan persepsi siswa berpengaruh positif dan signifikan baik secara parsial (uji t, sig. 0,000) maupun simultan (uji F = 25,726; sig. 0,000) terhadap minat memilih program, serta mampu menjelaskan 62,4% variasinya (R2 = 0,624). Uji beda menunjukkan adanya perbedaan persepsi yang signifikan antara guru dan siswa (t = 17,910; sig. 0,000). Temuan ini menegaskan bahwa Program Keahlian Perpajakan memiliki potensi kuat sebagai alternatif pendidikan vokasi bidang keuangan, meskipun implementasinya memerlukan penguatan kompetensi guru dan kesiapan digital sekolah.
Robust stall detection of three-phase induction motors using transient-aware current-speed monitoring Muchlas Muchlas; Herman Dwi Surjono; Tole Sutikno; Barry Nur Setyanto
Bulletin of Electrical Engineering and Informatics Vol 15, No 4: August 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i4.13216

Abstract

Reliable stall detection is essential for protecting three-phase induction motors from thermal damage while maintaining uninterrupted industrial operation. Conventional threshold-based protection methods often struggle to distinguish transient overload events from sustained stall conditions, resulting in nuisance trips or delayed fault detection under dynamic operating conditions. This paper proposes a robust transient-aware stall detection framework that combines stator current monitoring, rotor speed monitoring, startup inhibition, adaptive activation logic, and hold-time verification within a lightweight threshold-based decision process. The proposed algorithm was implemented and evaluated using a MATLAB/Simulink model of a three-phase squirrel-cage induction motor under representative operating scenarios, including motor startup, temporary overload, and sustained stall conditions. Simulation results demonstrate that the proposed framework successfully suppresses unnecessary trips during short-duration overloads by allowing the motor to re-accelerate after transient disturbances. Conversely, when abnormal operating conditions persist beyond the predefined hold time, the algorithm reliably identifies an actual stall and activates the protection relay to disconnect the motor. By integrating temporal verification with simultaneous current and speed monitoring, the proposed framework effectively discriminates recoverable transient events from sustained stall conditions while maintaining low computational complexity. These characteristics make the proposed method suitable for practical real-time induction motor protection in industrial automation applications.
Co-Authors Aan Marianto Ahmad Yusup Aliim Muqaffi Siswanto Anton Yudhana Aris Rakhmadi Budhi Cahyono Budiastuti, Pramudita Delta Rosiana Deo Roseno Edhy Susatya Fahmi Fardiyan Arief Fajar Hermawanto Haris Ramdan Hartono, Susilo Hendro Welas Setiawan Herman Dwi Surjono Joko Purwono Jumintono Jumintono Kartika Firdausy Kurnia Indriati* Lucky Indraswari Marianto, Aan Muhammad Kunta Biddinika Muhammad Noorudin Muhammad Sayuti Nurfitri Herlinamurti Nurhidayat Nurhidayat Nuri Rimbawati Nuryono Satya Widodo Okimustava Okimustava Pranata, Yuda Indra Ribby Essabella Rivkih Amanulloh Sahnan Sahnan Santiko Santiko Selamat Riyadi Setyanto, Barry Nur Sigit Priyo Subekti Sigit Wijaya Siti Sundari Sukma Aji Sunardi, Sunardi Supri Supri Titania Allin Ayundha Tole Sutikno Tri Antoro Wahyu Sapto Aji Wisnu Wulur Yuda Indra Pranata Yudhiakto Pramudya Yunita Dwi Andini Yusup, Ahmad