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All Journal POSITRON JURNAL TEKNOLOGI LINGKUNGAN Indonesian Journal of Applied Linguistics (IJAL) Media Komunikasi Geografi Jurnal sistem informasi, Teknologi informasi dan komputer Jurnal Fisika Unand Jurnal Spektra JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Jurnal Ilmiah Pendidikan Pancasila dan Kewarganegaraan KAREBA : Jurnal Ilmu Komunikasi Sistemasi: Jurnal Sistem Informasi Omni-Akuatika INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi LLT Journal: A Journal on Language and Language Teaching INDONESIAN JOURNAL OF APPLIED PHYSICS JRST (Jurnal Riset Sains dan Teknologi) International Journal of Language Teaching and Education Indonesian Journal of English Language Teaching and Applied Linguistics Indonesian Fisheries Research Journal JURNAL PENDIDIKAN TAMBUSAI JEES: Journal of English Educational Study JISIP: Jurnal Ilmu Sosial dan Pendidikan Jurnal Teori dan Aplikasi Fisika Building of Informatics, Technology and Science Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Journal of English Language Teaching Innovations and Materials (Jeltim) Hermeneutika : Jurnal Ilmu Hukum Jurnal Abdi Insani Ethical Lingua: Journal of Language Teaching and Literature Idealis : Indonesia Journal Information System Jurnal Teknologi Informasi dan Komunikasi Education and Linguistics Knowledge Journal (Edulink) JOLLT Journal of Languages and Language Teaching Empiricism Journal International Journal Software Engineering and Computer Science (IJSECS) Makara Journal of Science JEELS (Journal of English Education and Linguistics Studies) Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat dan Riset Pendidikan Jurnal Tarreang: Tren Pengabdian Masyarakat Agrokompleks Jurnal Pendidikan Progresif Indonesian Journal of English Language Teaching and Applied Linguistics Jurnal bahasa, sastra, seni, dan pengajarannya
Edi Suharyadi
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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EFL teachers’ reasons for selecting instructional materials during the COVID-19 pandemic Suharyadi, Suharyadi; Wulyani, Anik Nunuk
Bahasa dan Seni: Jurnal Bahasa, Sastra, Seni, dan Pengajarannya Vol. 50, No. 1
Publisher : citeus

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

Abstract

The COVID-19 pandemic has changed how teachers teach and students learn in the classroom. One of the challenges in the online teaching is that teachers are required to prepare the instructional materials for their students. This study aims at investigating the EFL teachers’ reasons for choosing the instructional materials in the time of the COVID-19 pandemic. By employing a set of questionnaires, this study collected the data from 219 English teachers from various levels of education online via the google form link. The data collection was done for one month starting from 5 May to 5 June 2020. The data were analyzed through a content analysis by identifying, grouping, and categorizing similar and different responses. The results of analysis showed that the EFL teachers have five categories of reasons in selecting the instructional materials in the time of pandemic: the instructional materials should be easy, relevant, simple, attractive, and absent from crime, pornography, and viruses. These results suggest that the EFL teachers make use of these reasons in selecting and developing the instructional materials for their students during and after the pandemic. For future textbook developers, these considerations can be used a reference to develop textbooks which accommodate students’ voices and teachers’ voices during the online teaching and learning activities.
ANALISIS SENTIMEN KEPUASAN PELANGGAN PADA KOPISHOP TELON COFFEE MENGGUNAKAN METODE TF-IDF BERBASIS ULASAN GOOGLE MAPS DAN GOFOOD Tyas Adi Novianto; Suharyadi, Suharyadi
JURNAL TEKNOLOGI INFORMASI DAN KOMUNIKASI Vol. 17 No. 1 (2026): Maret
Publisher : UNIVERSITAS STEKOM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/jtikp.v17i1.1529

Abstract

Perkembangan industri kopi yang pesat mendorong pelaku usaha untuk memahami tingkat kepuasan pelanggan secara lebih objektif. Salah satu sumber informasi yang dapat dimanfaatkan adalah ulasan pelanggan pada platform digital seperti Google Maps dan GoFood. Penelitian ini bertujuan untuk menganalisis sentimen kepuasan pelanggan terhadap Kopishop Telon Coffee menggunakan metode Term Frequency–Inverse Document Frequency (TF-IDF) dan algoritma Support Vector Machine (SVM). Data yang digunakan berupa 186 ulasan pelanggan yang dikumpulkan dari Google Maps dan GoFood, kemudian dilabeli secara manual ke dalam tiga kelas sentimen, yaitu positif, netral, dan negatif. Tahapan penelitian meliputi pengumpulan data, pra-pemrosesan teks, ekstraksi fitur menggunakan TF-IDF, serta klasifikasi sentimen menggunakan SVM. Hasil ekstraksi fitur menunjukkan bahwa kata “kopi”, “enak”, dan “nyaman” memiliki bobot TF-IDF tertinggi, yang mengindikasikan bahwa kualitas rasa dan kenyamanan tempat menjadi aspek utama yang diperhatikan pelanggan. Evaluasi model SVM menghasilkan akurasi sebesar 86,84%, dengan nilai precision, recall, dan F1-score yang cukup baik, meskipun masih terdapat keterbatasan dalam mengklasifikasikan sentimen minoritas akibat ketidakseimbangan data. Secara keseluruhan, hasil penelitian menunjukkan bahwa mayoritas pelanggan memberikan sentimen positif terhadap Kopishop Telon Coffee. Penelitian ini membuktikan bahwa kombinasi metode TF-IDF dan SVM dapat digunakan secara efektif untuk menganalisis sentimen kepuasan pelanggan berdasarkan ulasan daring dan dapat menjadi dasar evaluasi serta pengambilan keputusan bagi pelaku usaha.
Pengaruh Penambahan Ag Terhadap Struktur Kristal dan Sifat Optik Fe3O4, serta Variasi Massa Nanokomposit Fe3O4/Ag terhadap Karakteristik Kurva Surface Plasmon Resonance Menggunakan Metode Sintesis Hijau Flora Rosdiana Lumbansiantar; Edi Suharyadi; Suprihatin; Posman Manurung
Jurnal Teori dan Aplikasi Fisika Vol. 14 No. 01 (2026): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v14i01.537

Abstract

Surface plasmon resonance (SPR) phenomenon was observed using the Kretschmann configuration with a four-layer structure: prism/Au Thin Film/ Fe3O4/Ag/air, with Fe3O4/Ag nanocomposite mass variation of 0.025; 0.05; 0.075; and 0.1 gram. Fe3O4 which was then added with 100 mM Ag to become Fe3O4/Ag 100 mM nanocomposite was synthesized using green synthesis method, and then characterized by XRD and UV-Vis. XRD results showed the addition of Ag to Fe3O4 does not change the crystal structure of Fe3O4 directly, but causes an increase in crystallite size. UV-Vis results showed the absorbance spectrum shifted to longer wavelengths. Deposition of Au thin layer on the prism side using vacuum evaporator. Fe3O4/Ag was deposited on the Au thin film using spray method. For the initial configuration of  prism/Au Thin Film/air, the SPR angle (θSPR) of 45.67º was obtain with a minimum reflectance (Rmin) of 0.4208. After the addition of Fe3O4/Ag with each mass, the SPR angle (θSPR) shifted to 45.98º; 46.38º; 46.75º; and 46.77º with a minimum reflectance (Rmin) of 0.5645; 0.6977; 0.7239; and 0.7663. The resulting angular shifts were 0.31º; 0.71º; 1.08º; and 1.11º. The results show that the addition of Fe3O4/Ag to the Au thin layer causes a shift in the SPR angle towards a larger incident angle, as well as increasing the minimum reflectance value. The greater the mass of nanocomposite added, the greater the SPR angle shift that occurs.     Keywords: Fe3O4/Ag nanocomposite, green synthesis, surface plasmon resonance (SPR), UV-Vis, XRD.
EFL Teachers’ Problems and Solutions in Teaching English to Students with Intellectual and Developmental Disability Utami, Revita Putri; Suharyadi, Suharyadi; Astuti, Utari Praba
IJELTAL (Indonesian Journal of English Language Teaching and Applied Linguistics) Vol 6, No 1 (2021): Indonesian Journal of English Language Teaching and Applied Linguistics
Publisher : Universitas Islam Negeri Sultan Aji Muhammad Idris Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21093/ijeltal.v6i1.912

Abstract

Sekolah Luar Biasa (SLB) is a school specialized for students with special needs, particularly students with Intellectual and Developmental Disability (IDD). In Indonesia, the government guarantees that they have the same right to study formally and informally; and to get the best teachers in the teaching and learning process. In English language teaching, however, even qualified teachers have problems while teaching English to students with IDD. Despite the urgency to solve the problems faced by teachers who teach English or a foreign language to special needs students, especially IDD, there are only a few articles covering this topic. This study, which uses a descriptive qualitative method, aims at uncovering the problems and solutions of five English teachers in teaching students with IDD in SLB Pembina Tingkat Nasional Bagian C Malang. In order to obtain the needed data, an observation checklist, a field note, and an interview guide were utilized. The findings revealed that problems faced by the teachers were related to teachers’ English proficiency, methods and media used in teaching, and students’ ability in learning. The teachers used different solutions to overcome the problems, but the most common solution was using repetition in teaching and practicing. This solution was used as the students had difficulties in understanding and remembering the lesson. The other solutions used during the teaching and learning process include YouTube videos, English learning application, posters, and BSE.
EFL Teachers’ Problems and Solutions in Teaching English to Students with Intellectual and Developmental Disability Utami, Revita Putri; Suharyadi, Suharyadi; Astuti, Utari Praba
IJELTAL (Indonesian Journal of English Language Teaching and Applied Linguistics) Vol 6, No 1 (2021): Indonesian Journal of English Language Teaching and Applied Linguistics
Publisher : Universitas Islam Negeri Sultan Aji Muhammad Idris Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21093/ijeltal.v6i1.912

Abstract

Sekolah Luar Biasa (SLB) is a school specialized for students with special needs, particularly students with Intellectual and Developmental Disability (IDD). In Indonesia, the government guarantees that they have the same right to study formally and informally; and to get the best teachers in the teaching and learning process. In English language teaching, however, even qualified teachers have problems while teaching English to students with IDD. Despite the urgency to solve the problems faced by teachers who teach English or a foreign language to special needs students, especially IDD, there are only a few articles covering this topic. This study, which uses a descriptive qualitative method, aims at uncovering the problems and solutions of five English teachers in teaching students with IDD in SLB Pembina Tingkat Nasional Bagian C Malang. In order to obtain the needed data, an observation checklist, a field note, and an interview guide were utilized. The findings revealed that problems faced by the teachers were related to teachers’ English proficiency, methods and media used in teaching, and students’ ability in learning. The teachers used different solutions to overcome the problems, but the most common solution was using repetition in teaching and practicing. This solution was used as the students had difficulties in understanding and remembering the lesson. The other solutions used during the teaching and learning process include YouTube videos, English learning application, posters, and BSE.
STUDENTS’ PERCEPTIONS OF PROJECT-BASED LEARNING (PJBL) IN P5 PROJECTS FOR ENHANCING WRITING SKILLS AT ISLAMIC BOARDING SCHOOL Arifin, Syamsul; Anugerahwati, Mirjam; Suharyadi, Suharyadi
EDUCATION AND LINGUISTICS KNOWLEDGE JOURNAL Vol 8 No 1 (2026): Education and Linguistics Knowledge Journal (Edulink)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Islam Kadiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32503/edulink.v8i1.8687

Abstract

This study aims to explore the perceptions of students toward Project-Based Learning (PjBL) in P5 projects for enhancing writing skills at Islamic Boarding Schools (IBS). It seeks to address key questions about students’ experiences, the impact of PjBL on writing development, the challenges encountered, and strategies for improvement. Adopting a convergent parallel mixed methods design, data were collected using an online questionnaire and semi-structured interviews. The questionnaire involved 84 students from As-Syifa Islamic Boarding School Sagalaherang Subang, while 12 participants, purposefully selected based on English proficiency (basic, intermediate, advanced) and willingness to participate, were interviewed for in-depth insights. Quantitative data were analyzed descriptively, and qualitative data were coded thematically. Findings reveal that PjBL in P5 projects positively influences students’ writing skills through real-world applications, collaborative tasks, and engaging activities. However, challenges such as time constraints, limited vocabulary, and group dynamics were noted. To enhance PjBL outcomes, students proposed extending time for writing tasks, providing immediate feedback, and integrating digital tools for autonomous learning support.
The Role of Green-Synthesized Fe3O4/Ag Magnetic Nanoparticle Masses on the Specific Absorption Rate toward Magnetic Hyperthermia Applications Dhel Prisca Daro Kowe; Mahardika Yoga Darmawan; Nurul Imani Istiqomah; Edi Suharyadi; Nur Aji Wibowo
JRST (Jurnal Riset Sains dan Teknologi) Volume 9 No. 2 September 2025: JRST
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrst.v9i2.22884

Abstract

With chemotherapy and radiation therapy being the most common cancer treatments today, there are questions about their effectiveness and risks.Therefore, an alternative method that does not have significant side effects is needed, such as magnetic hyperthermia therapy (HM).The mass of magnetic nanoparticles (MNP) and the coating of MNP as anti-cancer agents play a very important role in optimizing the HM method, characterized by the Specific Absorption Rate (SAR) value.This study examines the effect of the mass of iron oxide magnetic nanoparticles with a silver coating (Fe3O4/Ag) on the Specific Absorption Rate (SAR) value. MNP Fe3O4/Ag was synthesized using the green synthesis (GS) method with Moringa oleifera (MO) plant extract.The results of this study show that GS-NPM Fe3O4/Ag has a crystal size between 42.69 - 43.58 nm with a bandgap energy of 2.50 eV, and contains functional groups O-H, C-H, N-Ag, Fe-O, and Fe-O-Si.There was a temperature change in the NPM Fe3O4/Ag for all mass variations, ranging from 0°C to 14.2°C over a period of 600 seconds, using a frequency of 15 kHz and an alternating magnetic field amplitude of 150 Oe.This temperature change indicates that the greater the mass of the NPM sample, the higher the NPM temperature. The lowest and highest SAR values obtained, consecutively, were 0.43 W/g at a mass of Fe3O4/Ag 0.125 grams and 1.11 W/g at a mass of 0.025 grams.
Enhancing learners’ grammar competence through teacher’s oral and written corrective feedback Karenia Jannah Dewi Prayogo; Suharyadi, Suharyadi; Raihana Binti Romly
JEELS (Journal of English Education and Linguistics Studies) Vol. 13 No. 1 (2026): JEELS May 2026
Publisher : Universitas Islam Negeri (UIN) Syekh Wasil, Kediri, Indonesia

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Abstract

Giving proper corrective feedback is essential for learners in learning English grammar. However, which form of corrective feedback works more effective remains insufficiently explored. This study aims to examine the effect of OCF and WCF on learners' English grammatical ability at a state Islamic junior high school in Malang Indonesia, specifically on the simple past tense. Deploying a quasi-experimental design with two groups: 20 learners of the 7G class as the Experimental Group and 20 learners of the 7I class as the Control Group, this study collected data from the pre-test and post- test. To measure the significant differences between OCF and WCF, the means of the tests of both groups were analyzed using Analysis of Covariance (ANCOVA). This study reveals that OCF and WCF are effective in improving learners' grammar. However, there was no statistically significant difference between the two groups. The OCF group demonstrated slightly greater improvement in gain scores, while the WCF group achieved higher post-test mean scores. These findings suggest that both types of corrective feedback are comparably effective, although they may support different aspects of learning.
Exploring the Relationship Between Vocabulary Knowledge and Reading Comprehension Skills Reza Khatami, Muhammad; Maulana Gibrani, Akbar; Suharyadi, Suharyadi
International Journal of Language Teaching and Education Vol. 10 No. 1 (2026): International Journal of Language Teaching and Education
Publisher : Universitas Jambi, Magister Program of English Education Department

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/ijolte.v10i1.51683

Abstract

This study carries some practical implications for Indonesian EFL classrooms, particularly about the role of vocabulary in the improvement of reading comprehension, which could be useful for EFL teachers in designing successful lessons. The present study was conducted to investigate, in addition to the correlation of vocabulary skill and reading comprehension, whether vocabulary predicts reading performance. Accordingly, the quantitative correlational research design was employed in the study. Subjects were thirty-nine tenth-grade students from MA Daarul Ukhuwah. Students' receptive vocabulary was assessed with a 20-item vocabulary test. The school assessed reading level with an end-of-semester test. The Shapiro-Wilk tests suggested that the data were not normally distributed, and therefore, Spearman's rho correlation and simple linear regression analyzes were conducted to analyze the data. The correlation between rating comprehension and vocabulary knowledge was large and moderate (rs = .363, p = .023). Vocabulary knowledge was responsible for 12.4% of the variance in reading comprehension scores (R² = .124). From an educational point of view, the results suggest that instruction in contextualized vocabulary should be augmented by inferencing and building background knowledge to improve reading comprehension. Future studies should employ larger and more diverse samples, use item-level, psychometrically validated instruments, and employ more rigorous methods for calculating effect sizes to better inform classroom practice.
Sintesis Nanopartikel Cobalt Ferrite (CoFe2O4) dengan Metode Kopresipitasi dan Karakterisasi Sifat Kemagnetannya Setiadi, Eko Arief; Shabrina, Nanda; Budi Utami, Hesti Retno; Fahmi, Nur Fadhilah; Kato, Takeshi; Iwata, Satoshi; Suharyadi, Edi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1216

Abstract

Magnetic nanoparticles of cobalt ferrite (CoFe2O4) have been synthesized by co-precipitation method with various synthesis temperature and concentration of NaOH. The structural characteristics and particle size of CoFe2O4 were determined by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM), its showed that nanoparticles well crystallized with various grain size which depend on synthesis parameters. The grain sizes estimated using the Scherrer formula were found that the grain size increased with increasing temperature synthesis and decreasing concentration of NaOH. Magnetic characterization of CoFe2O4 nanoparticles was investigated by using a Vibrating Sample Magnetometer (VSM). Sample with various concentration of NaOH showed that coercivity was decrease with the decrease of particle size. In other hand, samples with various synthesis temperature found that sample withsmallest grain size have high coersivity. The saturation magnetization increase when crystallinity increase. Based on the results, it can be concluded that magnetic characterization of CoFe2O4 was influenced by grain size and crystallinity.
Co-Authors - Heriansyah, - - Mustawarman, - - Mutmainnah, - A.A. Ketut Agung Cahyawan W Abdul Hakim Prima Yuniarto Abu Khalid Rivai Ade Iriani Adriyanto Juliastomo Gundo Agnesia, Wega Dhea Agustin, Ayu Chandra Agustina, Ayu Kurnia Agusutrisno Agusutrisno, Agusutrisno Alfiazh, Andini Tria Anik Nunuk Wulyani Arditya Prayogi Armitasari, Linda Asep Awaludin, Asep BUDI SETIADI DARYONO Budi Utami, Hesti Retno Chairani, Nur Julianti Dwi Damanik, Lina Aftiani DEWI SARTIKA Dewi, Priyantini Dhel Prisca Daro Kowe Ekaning Dewanti Laksmi Eko Arief Setiadi, Eko Arief El Khoiri, Niamika Erni Marlina, Erni Evi Maria Evynurul Laily Zen Fahmi, Nur Fadhilah Fakhrillah, Agvy Rena Farkan, Mochammad Ferni Malega Flora Rosdiana Lumbansiantar Gunadi Harry Sulistyo Hafied Cangara, Hafied Harianto, Muhammad Bayu Aji Putra Heri Kiswanto Heri Kiswanto Hidayati, Yustina I Putu Tedy Indrayana Ihsan, Iif Miftahul Ilham Ilham Imam Prayogo Pujiono Indrawati, Dewi Miska Irwan Sembiring Istiqomah, Nurul Imani Ivone, Fransisca Maria Joko Utomo Kamsul Abraha Karenia Jannah Dewi Prayogo Kristiany, Maria Gorety Eny Kuat Ismanto Kusumamawarni, Deaseptia Nirmala Laisina, Edwin Lintang Griyanika Mahardika Yoga Darmawan Mahmudah, Diah Malega, Ferni Malega, Ferni Mangalla, Bileam Mardiyanto Mardiyanto Margono Margono Maulana Gibrani, Akbar Mirjam Anugerahwati Mudasir Mudasir Muhammad Hanif Mulyono, Mugi Nasirin, Nasirin Nasrullah Nasrullah Novela, Monica Nugraha, Bayu Adi Nur Aji Wibowo Nurul Imani Istiqomah Nurwadi, Nurul Fadilah Parlina, Iin Posman Manurung Prabandaru, Lila Prabowo, Guntur Prima Widayani Putra, Angkasa Rahardian, Renaldy Baptista Rahayu, Dwi Indah Raihana Binti Romly Ramadiansyah, Febry Reza Khatami, Muhammad Rheido, Gestar Riyanto, Didik Rohmah, Syifa Romi Novriadi Rony, Zahara Tussoleha Rosyidah, Umniyah Juman Safitri, Mega Said, Dian Riani Sakinah, Nurhidayati Samsu Harapan, Sri Budiani Samsuardi Samsuardi, Samsuardi Samsuharapan, Sri Budiani Sari, Emi Kurnia Satoshi Iwata Sektiana, Sinar Pagi Shabrina, Nanda Shirly Rizki Kusumaningrum Sintha Tresnadewi Siti Muniroh Sri Andreani Sri Budiani Stephanie Gabriella Wijaya Suhardi, Muhammad Tegar Alif Suprihatin Susilo, Dinantari Susilo, Sandy Pria Nanda Syahirul Alim Syahrul R, Syahrul Syamsul Arifin Syaputra, Affandi Syukron, Akhmad Aufa Tahir, Asman Bin Mohd Taib, Suryani Takeshi Kato Theopillus J. H. Wellem Tintien Koerniawati Tjoa, Stanley Evander Emeltan Tresnadewi, Shinta Tyas Adi Novianto Utami, Revita Putri Utari Praba Astuti Wake, Yohana Dhoe Yani, Achmad Yazid Basthomi Yessica Nataliani Yulizar Yulizar Yumna, Asy Syafa’