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All Journal Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika FKIP UM Metro International Journal of Science and Applied Science: Conference Series Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Spektra: Jurnal Fisika dan Aplikasinya Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat Indonesian Review of Physics (IRiP) Jurnal Fisika Indonesia Jurnal Abdi Insani SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) JEMAS : Jurnal Edukasi Matematikan dan Sains Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Jurnal Material dan Energi Indonesia Lontar Physics Today Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK) JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Pengabdian Masyarakat Ilmu Pendidikan Jurnal VARIDIKA
Okimustava Okimustava
Universitas Ahmad Dahlan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy 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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Perlindungan Sensor Suhu Cu/Ni dengan Nitroselulosa Surur, Miftahus; Toifur, Moh.; Okimustava, Okimustava; Putri, Siti Zahra Helmania
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 8 No. 2 (2024): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v8i2.3820

Abstract

Coating of Cu/Ni with nitrocellulose (NC) has been carried out with the aim of determining the effect of using NC as a protective film on the sensitivity and activation energy of the sensor. The samples used were Cu/Ni and Cu/Ni/Cu where the NC coating on Cu/Ni was carried out using a spray method with a pressure of 1.2 Mpa. Both sensor samples were used to measure the temperature of liquid nitrogen (liquid N2) which was varied from -160C - 0C. In addition to temperature, voltage and current were also measured. The sensitivity value was obtained from the slope of the resistance curve against temperature, while the activation energy was obtained from the slope of the logarithm of conductivity against one per absolute temperature. From the sensitivity test, it is known that both sensors have a tendency to be more sensitive when the temperature is lowered, but the presence of the NC layer causes a decrease in sensitivity of up to 18.9%, namely from 3.95 /C to 3.18 /C at a temperature of -160C following the equation S(T)=0.10e-0.012T. The use of NC protective layer can also increase the activation energy by 1.3%, namely from (4.29  0.01)x10-9 eV to (4.35  0.01)x10-9 eV. These results can be used as a consideration for temperature sensor manufacturers that the use of NC protective layer is important but can reduce sensor sensitivity.
Learnviro: An IoT-Based Innovation for Monitoring the Learning Environment Maryani, Ika; Okimustava, Okimustava; Suyatno, Suyatno; Hasanah, Enung
SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Vol. 6 No. 1 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/spekta.v6i1.12722

Abstract

Background: Aisyiyah Bantul's Leading Elementary School faces challenges in maintaining an optimal learning environment, particularly regarding temperature, humidity, and lighting. This community service program introduces Learnviro, an IoT-based solution for real-time environmental monitoring, enabling schools to make data-driven decisions to enhance learning conditions. Contribution: Learnviro empowers teachers by providing real-time data, allowing them to make informed adjustments that support differentiated instruction. The system also improves school management by optimizing classroom conditions and infrastructure maintenance. Method: The program consists of four stages: (1) collaboration with partner schools to assess needs, (2) installation of IoT devices in classrooms, (3) teacher training on interpreting and applying environmental data, and (4) continuous technical support. Data collection involved observations, interviews, and questionnaires, analyzed descriptively to evaluate the program’s effectiveness. Results: Learnviro effectively provided real-time environmental data, improving teachers’ proficiency in utilizing IoT-based insights for classroom management. Students reported increased comfort and focus, while schools experienced better infrastructure maintenance through data-driven decision-making. Conclusion: Learnviro has proven to be an effective tool for optimizing classroom conditions and empowering the school community. By integrating IoT technology into education, this initiative demonstrates the practical application of intelligent environmental monitoring in addressing real-world.
PENDAMPINGAN BUDIDAYA AYAM KUB PADA KELOMPOK WANITA TANI (KWT) NISKALA BANTUL DAERAH ISTIMEWA YOGYAKARTA Irawati, Hani; Okimustava, Okimustava; Arief Ghozali, Fanani
Jurnal Abdi Insani Vol 11 No 4 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i4.2131

Abstract

Community service is one part of the tridharma of higher education that must be carried out by lecturers. Community service provides space for lecturers to apply their knowledge in the community. One of the community service activities carried out by Ahmad Dahlan University lecturers is by holding training and mentoring KUB chicken cultivation at the Niskala Bantul DIY Farmer Women Group (KWT). The purpose of this service activity is to provide knowledge and assistance to KWT Niskala about KUB chicken cultivation. The initial knowledge of the trainees was measured using pretest questions and after the training activities, a test post was carried out to determine the improvement of the trainees' understanding. Based on the results of the postes, it is known that there is an increase in knowledge related to KUB chicken cultivation, in addition to that based on the assistance carried out, a good increase in the weight of KUB chickens is obtained.
Resistivity of SnO2 Gas Sensor to Humidity, CO2 Gas, and Temperature in Food Decomposition Process Setiawan, Indra Budi; Toifur, Moh.; Ishafit, Ishafit; Okimustava, Okimustava; Hajatulloh, Ridlo; Susanto, Eko
Lontar Physics Today Vol 4, No 3 (2025): November 2025 (In Progress)
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v4i3.24866

Abstract

Penelitian ini bertujuan untuk menentukan kepekaan sensor sebagai sensor gas dari substrat Cu yang dilapisi SnO2 melalui proses elektroplating dengan variasi suhu larutan elektrolit dan oksidasi termal. Parameter deposisi ditetapkan yaitu larutan elektrolit dengan melarutkan SnCl2 pada aquades, tegangan 4,5 V, jarak elektroda 3 cm, dan waktu elektroplating selama 3 menit. Pada uji kepekaan sensor dilakukan dengan mengamati proses pembusukan makanan dengan meletakkan makanan yang diamati dan sensor pada kontiner uji. Akuisisi data suhu, kelembapan, kadar CO2, dan hambatan sensor dilakukan dengan bantuan transduser dan software Logger Pro. Berdasarkan hasil penelitian, sampel sensor dengan suhu elektrolit 600C (sampel B) pada proses elektroplating menunjukkan hasil yang lebih baik dari sampel sensor dengan suhu elektrolit 300C (sampel A).  Sampel B mampu membaca perubahan suhu lebih baik dengan nilai koefisien determinasi R2 = 0,66943. Sampel B juga mampu membaca perubahan kadar CO2 dengan lebih baik dengan R2 = 0,98225. Hal ini dikarenakan proses elektroplating yang lebih efektif dilihat dari perubahan massa dan tebal lapisan SnO2. Kepekaan sampel B dengan nilai kepekaan S([CO2]) = 9.42E-5 - 1.17E-9[CO2] lebih baik daripada sampel A dengan nilai kepekaan S([CO2]) = -2.34E-4 + 4.25E-9[CO2] ditunjukkan oleh grafik. Sampel B menunjukkan kurva linier negatif dengan kemiringan yang landai. Kondisi tersebut menunjukkan sensor gas yang stabil.
Developing Nila Larasati Aquaculture for Economic Strengthening of the Muhammadiyah Farmers' Congregation in Sedayu Toifur, Moh.; Okimustava, Okimustava; Kusumaningtyas, Dian Artha; Utami, Listiati Budi; Hanafi, Yahya
Jurnal Pengabdian Masyarakat Ilmu Pendidikan Vol. 4 No. 1 (2025): Mei 2025
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmip.vol4iss1pp65-79

Abstract

The cultivation of Nila Larasati tilapia in Argorejo Village, Sedayu, Bantul, was carried out through a multiyear community service program by Ahmad Dahlan University in collaboration with the Rejo Ayu Fish Farmers Group. The program included pond construction, seed selection, stocking, and maintenance. Two ponds (4×5×2 m³ and 3×7×2 m³) were built on a 100 m² backyard, protected by a 2-meter galvanized fence and shading nets to prevent predators. A total of 3,000 fingerlings were stocked at around 200 fish/kg and fed twice daily. After three months, the fish reached market size (8–9 fish/kg), producing 300–320 kg per cycle and generating IDR 8.4–9.6 million in gross income at prices of IDR 28,000–30,000/kg. This shows successful adoption of aquaculture technology and improved community capacity. However, issues like predation by Varanus salvator and limited stocking due to financial constraints remain. To improve productivity and sustainability, future programs should enhance biosecurity and expand access to micro financing.
Integrating the Eco Explorers Game to Enhance Elementary Students’ Problem-Solving Skills in Ecosystem Learning Meifilindati, Intan; Maryani, Ika; Okimustava, Okimustava; Kristiawan, Muhammad; Salmo, Josephine Magay
Jurnal VARIDIKA Volume 37 No 2, June 2025
Publisher : Faculty of Teacher Training and Education, Universitas Muhammadiyah Surakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/varidika.v37i2.10638

Abstract

Science education at the primary level plays a critical role in fostering students’ higher-order thinking skills, particularly their problem-solving abilities. However, many elementary students continue to face challenges in developing these competencies, leading to generally low levels of performance. This study investigates the effectiveness of the Eco Explorers educational game in enhancing the problem-solving skills of fifth-grade students within the topic of ecosystems. A pre-experimental one-group pretest-posttest design was employed, involving 25 participants selected through a non-probability sampling technique. Data were collected using observation sheets and standardized problem-solving tests, and analyzed using descriptive statistics, paired sample t-tests, and effect size calculations (Cohen’s d) with SPSS version 26. The results revealed a statistically significant improvement in students’ problem-solving abilities (p = 0.000 < 0.05), with a large effect size (Cohen’s d = 2.55). These findings reinforce previous studies highlighting the benefits of game-based learning for cognitive development. In conclusion, the Eco Explorers game is a highly effective instructional tool for improving students’ problem-solving skills in science education, particularly within ecological contexts. The study implies that incorporating interactive digital games into science instruction can significantly enhance student engagement and higher-order thinking, ultimately supporting more meaningful and effective learning experiences in primary education.
Investigating Senior High School Students’ Conceptual Understanding of Heat and Temperature: A Qualitative Analysis in Physics Education Utama, Rodika; Toifur, Moh.; Ishafit, Ishafit; Okimustava, Okimustava
Jurnal Pendidikan Fisika FKIP UM Metro Vol 13, No 2 (2025)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/jpf.v13i2.14137

Abstract

The distinction between heat and temperature is fundamental in physics learning, yet it remains a persistent source of student misconceptions. Many learners interpret heat as a tangible substance stored within an object or assume that temperature is equivalent to the amount of heat possessed. Such misunderstandings hinder the development of deeper concepts in thermodynamics and energy transfer. This study aims to investigate senior high school students’ conceptual understanding of heat and temperature through a qualitative lens. The research involved 30 Grade XI students from a public high school in Indonesia. Data were collected using a conceptual diagnostic test followed by semi-structured interviews that probed students’ reasoning about everyday thermal phenomena. Thematic analysis was applied to categorize misconceptions and identify underlying reasoning models. Findings revealed four dominant patterns: (1) the substance model of heat, where students described heat as a material that flows from hot to cold bodies; (2) the equation model of temperature, in which temperature was mistakenly treated as the total amount of heat; (3) the cold transfer misconception, where students believed coldness itself moves from one body to another; and (4) the size–temperature confusion, where larger objects were assumed to always have higher temperature. These conceptions align with reports in international literature, indicating the universal nature of such difficulties. The study underscores the value of qualitative exploration for uncovering the reasoning behind misconceptions, not merely their frequency. Implications for teaching include the use of particle-level representations, predict–observe–explain activities, and simple calorimetry experiments to help students reconstruct scientifically accurate models of heat and temperature.
MEDIA PEMBELAJARAN BERBASIS ANDROID GUNA PENUNJANG BELAJAR SISWA DI ERA SOCIETY 5.0 Wahyuningtyas, Dwi; Okimustava, Okimustava
Semnas Ristek (Seminar Nasional Riset dan Inovasi Teknologi) Vol 7, No 1 (2023): SEMNAS RISTEK 2023
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/semnasristek.v7i1.6410

Abstract

Co-Authors Abu Yazid Raisal Abu Yazid Raisal Abu Yazid Raisal Adini, Lia Agil, Mazani Azizan Apik Rusdiarna Indra Praja Arief Ghozali, Fanani Auliya Azfin, Tazkiya Azizah, Annisa Nur Bambang Sudarsono Bayu Setiawan Delta Rosiana Dian Artha Kusumaningtyas Dina Puspitasari, Arianti Dody Hartanto Dwi Wahyuningtyas Efi Kurniasari Eko Susanto Faiz Mubina, Muhammad Fardanti, Aribah Chika Hajatulloh, Ridlo Hani Irawati Hasanah, Enung Hidayatun Nafi'ah, Hilda Ika Maryani Irfan Rosyadi Ishafit Ishafit Ishafit Ishafit Islamiyati, Rizka Nuzul Lia Adini M. Khairul Ardi Meifilindati, Intan Miftahus Surur, Miftahus Moh. Irma Sukarelawan Moh. Toifur Muchlas , Muchlas Muchlas Muchlas, Muchlas Muhammad Faisal Muhammad Kristiawan Mustofa Ahyar Nanang Suwondo Nanang Suwondo NURAMALIA A Putri, Siti Zahra Helmania Rachmad Resmiyanto Rachmad Resmiyanto Rahayu, Fatonah Rahayu, Natika Ricka Tanzilla Salmo, Josephine Magay Setiawan, Indra Budi Sharfina Sharfina Silvia Laeli Sri Wahyuni Sumiasyih Sumiasyih Suyatno Suyatno Utama, Rodika Utami, Listiati Budi Yahya Hanafi Yudhiakto Pramudya Yudhiakto Pramudya