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The Impact of the E-Learning Module on Remediation of Misconceptions in Modern Physics Courses A. Halim; Soewarno Soewarno; Elmi Elmi; Zainuddin Zainuddin; I. Huda; Irwandi Irwandi
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 6 No 2 (2020): JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika), Volume 6 Issue 2, D
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/1.06207

The misconception in mastering physics concepts occurs in basic physics and is also found in advanced physics, such as Modern Physics or Quantum Physics. Efforts to remediate misconceptions have been done manually or offline but are often constrained at too long an interval between identification activities and remediation actions. Through the advancement of online learning systems, E-learning media, these obstacles can easily be overcome. This article will discuss one way of remediation using Moodle-based E-Learning modules. A total of 2 classes (45 students) were randomly selected for the experimental group and two classes (64 students) for the control group. The experimental group used a representative module based on E-Learning as a remediation treatment, while the control group used a conventional module. The results of the validation of the material and the design of the E-Learning modules were obtained as very feasible to use. Data collection uses a two-tier Modern Physic Diagnostic Test or MPDT (Modern Physic Diagnostic Test) of 30 items combined with the CRI (Certainty of Response Index) index. It is carried out twice, namely before and after treatment. The N-Gain normality analysis results showed the percentage of misconception reduction was more significant in the experimental group than in the control group. Important note obtained by implementing E-Learning is more appropriate to be used simultaneously between conventional face-to-face and E-Learning.

APLIKASI RADAR CUACA UNTUK IDENTIFIKASI FLUKTUASI KONDISI CUACA EKSTRIM (STUDI KASUS: BANJIR DI KOTA MEDAN TANGGAL 5 OKTOBER 2018) Budi Prasetyo; Nikita Pusparini; Irwandi Irwandi; Welly Fitria
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 20 No. 1 (2019): June 2019
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmc.v20i1.3901

Intisari Data Radar cuaca Enterprise Electronics Corporation (EEC) selama 24 jam pada tanggal 5 Oktober 2018 mulai pukul 07.00 WIB hingga 07.00 WIB tanggal 6 Oktober 2018 digunakan pada penelitian ini. Data ini diperoleh dari Balai Besar Meteorologi Klimatologi dan Geofisika Wilayah I dalam format volumetric (.vol) dan memiliki selang waktu per 10 menit. Metode yang digunakan yaitu analisis deskriptif hasil produk turunan Radar yang diolah menggunakan perangkat lunak yang berasal dari produsen radar yaitu Enterprise Doppler Graphic Environment (EDGE) berupa Coloumn Maximum (CMAX), momen intensitas horizontal, momen rata-rata curah hujan, dan Vertical Integrated Reflectivity (VIR), serta grafik curah hujan (RHG). Penelitian ini memperlihatkan bahwa fluktuasi kondisi cuaca yang terjadi pada tanggal 5 Oktober 2018 sangat tinggi. Secara umum, curah hujan intensitas tinggi yang terjadi di Kota Medan pada tanggal 5 Oktober 2018 umumnya terbagi menjadi tiga periode, yaitu hujan pada siang hingga sore (pukul 14.00 â€“ 15.50 WIB), hujan pada petang (pukul 18.20 â€“ 19.40 WIB), dan hujan pada malam hari (21.10 â€“ 23.40 WIB). Fluktuasi tertinggi terjadi pada periode pertama dengan kenaikan curah hujan tertinggi terjadi di Kecamatan Medan Helvetia dengan kenaikan curah hujan sebanyak 32 mm dalam 10 menit yang terjadi pada pukul 14.50 WIB, pada periode kedua terjadi di Kecamatan Medan Kota dengan kenaikan 24 mm pada pukul 18.20 WIB, dan periode ketiga terjadi di Kecamatan Medan Johor dengan kenaikan 17 mm pada pukul 21.20 WIB.Â Abstract Enterprise Electronics Corporation (EEC) Data Radar for 24 hours on October 5th, 2018, starting at 7:00 LT until 07.00 LT on October 6th, 2018, were used in this research. These data were obtained from the Center for Meteorology, Climatology and Geophysics in Region I in the form of volumetric (.vol) and has an interval of 10 minutes. The method used were descriptive analysis of Radar products processed by software from Radar manufacture, namely Enterprise Doppler Graphic Environment (EDGE) software which in the form of Column Maximum (CMAX) moments of horizontal intensity and moments of average rainfall, Vertical Integrated Reflectivity (VIR), and rainfall graph (RHG). We found that there were high fluctuations in weather conditions that occurred on October 5th, 2018. In general, the high-intensity rainfall occurred in Medan city on October 5th, 2018 was generally divided into three periods, namely rain in the afternoon until evening (at 14:00 - 15:50 LT), rain at dusk (18:20 - 19:40 LT), rain at night (21.10 - 23.40 LT). The highest fluctuation occurred in the first period with the highest increase of rainfall occurred in Medan Helvetia Subdistrict with an increase of 32 mm rainfall in 10 minutes which occurred at 14.50 LT; the second period occurred in Medan Kota District with a 24 mm increase at 18.20 LT, and the third period occurred in Medan Johor District with a 17 mm increase at 21.20 LT.

Aplikasi Radar Cuaca Untuk Identifikasi Fluktuasi Kondisi Cuaca Ekstrim Budi Prasetyo; Nikita Pusparini; Irwandi Irwandi; Welly Fitria
Jurnal Fisika dan Aplikasinya Vol 16, No 3 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v16i3.5155

Radar (Radio Detection and Ranging) cuaca dapat digunakan sebagai alat deteksi, analisis, maupun prediksi kondisi cuaca. Untuk itu, penelitian akan membahas analisis perubahan kondisi cuaca per kecamatan dengan mengambil studi kasus kejadian banjir yang terjadi di Kota Medan Pada tanggal 05 Oktober 2018. Data Radar cuaca Enterprise Electronics Corporation (EEC) selama 24 jam pada tanggal 05 Oktober 2018 mulai pukul 07.00 WIB hingga 07.00 WIB tanggal 06 Oktober 2018 digunakan pada penelitian ini. Data ini diperoleh dari Balai Besar Meteorologi Klimatologi dan Geofisika Wilayah I dalam format volumetric (.vol) dan memiliki selang waktu per 10 menit. Metode yang digunakan yaitu analisis deskriptif hasil produk turunan Radar yang diolah menggunakan perangkat lunak yang berasal dari produsen radar yaitu Enterprise Doppler Graphic Environment (EDGE) berupa Coloumn Maximum (CMAX), momen intensitas horizontal, momen rata-rata curah hujan, dan Vertical Integrated Reflectivity (VIR), serta grafik curah hujan (RHG). Penelitian ini memperlihatkan bahwa fluktuasi kondisi cuaca yang terjadi pada tanggal 05 Oktober 2018 sangat tinggi. Secara umum, curah hujan intensitas tinggi yang terjadi di Kota Medan pada tanggal 05 Oktober 2018 umumnya terbagi menjadi tiga periode, yaitu hujan pada siang hingga sore (pukul 14.00 – 15.50 WIB), hujan pada petang (pukul 18.20 – 19.40 WIB), dan hujan pada malam hari (21.10 – 23.40 WIB). Fluktuasi tertinggi terjadi pada periode pertama dengan kenaikan curah hujan tertinggi terjadi di Kecamatan Medan Helvetia dengan kenaikan curah hujan sebanyak 32 mm dalam 10 menit yang terjadi pada pukul 14.50 WIB; pada periode kedua terjadi di Kecamatan Medan Kota dengan kenaikan 24 mm pada pukul 18.20 WIB; dan periode ketiga terjadi di Kecamatan Medan Johor dengan kenaikan 17 mm pada pukul 21.20 WIB.

Application of dynamic electricity: Series and Parallel learning model with ISLE-based STEM approach for students with disabilities Yuli Andriani; Irwandi Irwandi; Mursal Mursal; Mailizar Mailizar; Elin Yusibani
Journal of Aceh Physics Society Volume 10, Number 1, January 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i1.18955

Abstrak. STEM Research Center telah mengembangkan beberapa modul dengan pendekatan model STEM berbasis Investigative Science Learning Environment (ISLE) dan telah berhasil mengimplementasikan pada sekolah umum di Aceh. Modul yang telah dikembangkan selanjutnya akan diterapkan kepada siswa penyandang disabilitas tunarungu di SMALB YPAC Kota Banda Aceh. Penerapan model pembelajaran menggunakan STEM berbasis ISLE yakni didasarkan pada kegiatan observasi dan diskusi berkaitan dengan empat bidang disiplin ilmu yakni sains, teknologi, enjinering dan matematika. Modul pembelajaran yang dikembangkan terdapat dua kegiatan belajar, yaitu kegiatan belajar yang berkaitan dengan eksperimen pengamatan dan kegiatan belajar yang berkaitan kegiatan eksperimen sederhana dengan menguji kebenaran hasil prediksi. Rangkaian listrik dinamis yang diberikan adalah rangkaian sederhana yang dipasangkan secara seri dan paralel. Untuk alat peraga listrik dinamis yang digunakan, pengamatan tidak mengalami permasalahan. Siswa dapat mengikuti lembar kerja modul ISLE dengan baik. Proses diskusi dalam kelompok masih dapat dilakukan, namun terdapat masalah dalam hal mengkomunikasikan ide-ide antar kelompok.Abstract. STEM Research Center has developed several modules with the ISLE-based STEM model approach and has successfully implemented them in regular schools in Aceh. The module that has been developed will then be applied to students with hearing disabilities at YPAC High School Banda Aceh City. The application of the learning model uses the ISLE-based STEM which is based on observation and discussion activities related to four fields, namely science, technology, engineering, and mathematics. The learning module developed has two learning activities, namely learning activities related to experimental observations and learning activities related to simple experimental activities by testing the correctness of the predicted results. A given dynamic electric circuit is a simple circuit that is paired in series and parallel. For dynamic electric props used, the observation does not experience any problems. Students can follow the ISLE module worksheets well. The discussion process in groups is still possible, but there are problems in communicating ideas between groups.Keywords: ISLE based STEM module, Deaf, Dynamic electricity

Integrasi Data Seismik 3D Terikat dengan Data Log untuk Karakterisasi Reservoir Hidrokarbon di Zona Unconformity Lapangan F3 Belanda Helmi Moejahid Ramud; Wahyu Wahyu Triyono; Irwandi Irwandi
Journal of Geoscience, Mining Engineering, and Technology Vol 1, No 1 (2017): Jurnal Ilmiah Mahasiswa Teknik Kebumian
Publisher : Journal of Geoscience, Mining Engineering, and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.628 KB)

Kebutuhan akan energi yang tinggi menuntut pencarian sumber minyak dan gas dilahan yang baru dengan metode yang lebih handal. Namun kebanyakan software untuk tersebut merupakan software berbayar. Oleh karena itu, pada penelitian ini dilakukan pengolahan dan interpretasi menggunakan FOSS (Free Open Source Software) dan data seismik dan log yang digunakan juga data yang bisa diakses free oleh publik misalnya data Lapangan F3 Belanda. Lapangan F3 tersebut merupakan sebuah lapangan yang telah berhasil di akuisisi untuk melihat prospek migas di laut utara (North Sea) tepatnya berada di sektor laut utara Belanda yang terletak pada kordinat N 54052’0,86”/ E 4048’47,07”. Data seismik yang tersedia pada penelitian ini adalah post-stack time migration (PSTM) dengan sampling rate sebesar 4ms dan fasa nol, data tersebut berupa seismik laut 3D yang telah diakuisisi pada tahun 1987. Dalam menganalisis sebaran batupasir untuk karakterisasi reservoir digunakan data log gamma ray, log porosity dan peta ketebalan waktu (isochrone). Bersadarkan interpretasi log gamma ray dan log porosity pada sumur F03-4 dan F06-1 menunjukkan bahwa nilai log gamma ray yang berada pada zona unconformity sangatlah tinggi sedangkan nilai log porosity rendah, dapat diidentifikasi bahwa zona unconformity terletak pada litologi batu serpih (shale). Berdasarkan dari peta ketebalan waktu (isochrone) bahwa area yang berada pada bagian selatan dan barat daya mengalami penipisan dengan nilai 40 m/s. Dari hasil peta ketebalan waktu dapat disimpulkan bahwa area yang mengalami penipisan diduga sebagai zona unconformity. Dalam petroleum system batu serpih merupakan batuan yang memiliki porositas dan permeabiltas rendah, oleh karena itu batu serpih tidak dapat berperan sebagai reservoir. pada dasarnya batu serpih sangat cocok dan berperan sebagai perangkap stratigrafi atau perangkap unconformity. Pada lapangan F3 Belanda ini zona unconformity berada pada lingkungan pengendapan delta, terbentuk mulai kala pertengahan Miosen dan berakhir pada kala Pliosen.

Study of ISLE-BASED STEM Approaches and Models in Its Use for Teacher Professionalism Development in Geometric Optical Case Studies Fathiya Nufus; Irwandi Irwandi; Syahrun Nur; Evendi Evendi
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 2 (2022): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i2.1352

21st century learning emphasizes that information and knowledge are obtained together with good communication and cooperation among fellow students in building their knowledge. One of the appropriate learning models and approaches to be applied in accordance with 21st century learning is the Investigative Science Learning Environment (ISLE) combined with Science, Technology, Engineering and Mathematics (STEM). This study uses the Research and development (R & D) method with the ADDIE (Analysis-Design-Develop-Implement-Evaluate) model. The product developed in this study is ISLE-based STEM learning media in the form of Student Worksheets on Geometry Optics material and the relationship between ISLE-based STEM learning and Teacher Professionalism Development is reviewed

ANALISIS KARAKTERISTIK DIURNAL PETIR DAN CURAH HUJAN BERDASARKAN DATA LIGTNING DETECTOR DAN HELMANN DI MEDAN Budi Prasetyo; Yosi Setiawan; Irwandi Irwandi
Instrumentasi Vol 43, No 2 (2019)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/instrumentasi.v43i2.175

Petir sangat terkait dengan kondisi cuaca buruk yang berpengaruh terhadap aktivitas masyarakat. Penelitian ini akan memanfaatkan data lightning detector dan Curah Hujan (CH) Hellman untuk menganalisis karakteristik dan hubungan keduanya di Kota Medan dan Sekitarnya. Data petir Awan ke Bumi (CG) dan CH Helmann jam-jaman selama tahun 2017 dari Badan Meteorologi Klimatologi dan Geofisika (BMKG) digunakan pada penelitian ini. Data CG dibatasi radius 10 km untuk menghindari noise dan mendapat hasil yang semakin baik. Pada penelitian ini digunakan perata-rataan, korelasi dan analisis aktivitas konvektivitas. Hasilnya menunjukkan bahwa terdapat 869 kali aktivitas petir selama tahun 2017 yang terdiri dari 548 CG negative (CG-) (63,1%) dan 309 CG positif (CG+) (36,9%). Aktivitas petir terbanyak (terendah) terjadi pada sore-malam hari (dini-pagi hari) sekitar pukul 15.00 - 20.00 LT (03.00 s.d 10.00 LT) dengan tertinggi (terendah) pukul 18.00 (10.00) LT. Korelasi Petir dan CH cukup signifikan yaitu 0.90 untuk CG+ dan 0.85 untuk CG-. Fase matang awan konvektif di wilayah medan berlangsung selama 6 jam berkisar pukul 15.00 - 21.00 LT.

The Impact of Problem-Based Student Worksheets on Improving Problem-Solving Skills in terms of Learning Outcomes A. Halim; Oka Melawati; Evendi Evendi; Yusrizal Yusrizal; Irwandi Irwandi
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 8 No 1 (2022): JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika), Volume 8 Issue 1, J
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/1.08114

The purpose of the study was to determine the impact of using a problem-based Student Worksheet (SWS) on improving problem-solving skills (PSS) in terms of student Learning Outcomes (LO). The research used a quantitative approach, quasi-experimental method, and the One Group Pretest-Posttest design research. The research sample also involved 31 high school students for the experimental class and 31 for the control class. The research has three variables: problem-based SWS, problem-solving skills (PSS), and Student Learning Outcomes (LO). The problem-solving skill instrument uses five essay questions, and the LO uses 20 multiple choice questions, both of which were developed by the researcher. Data analysis used the N-Gain formula to obtain information on the increase in PSS and LO. Based on the results of data analysis, it was found that the effect of implementing SWS was very significant on students’ PSS and LO. In addition, the application of SWS also affects students’ LO, and some students with high or low LO scores also have high PSS scores or vice versa. Inference from this study, it is hoped that teachers as educators will try to direct students to get used to solving physics problems using a five-stage problem-solving model.

Modifikasi Fantom ORNL_MIRD untuk Kebutuhan Simulasi Monte Carlo Pasien Radioterapi Kanker Payudara Menggunakan MCNPX Layna Miska; Rini Safitri; Irwandi Irwandi; Elin Yusibani
Jurnal Rekayasa Elektrika Vol 15, No 1 (2019)
Publisher : Universitas Syiah Kuala

In medical physics, the simulation of radiation dose distribution in the body of radiotherapy patients is generally carried out using the Monte Carlo method. But in conducting this simulation, medical physicists are often faced with the incompatibility problems of phantom geometry with simulation needs. Phantom ORNL-MIRD is the most commonly used phantom in simulation. In a radiotherapy simulation, cancer cells are usually only assumed to be in the phantom’s body without any concrete form. This can cause the administration of radiation doses that are not right on cancer cells. Phantom ORNL-MIRD is also only composed of three materials, namely bone, lung, and the rest are considered as soft tissue. This certainly provides inappropriate simulation results, especially in the case of breast cancer radiotherapy where the breast is composed of adipose tissue. This study aims to make ORNL_MIRD phantom modelling suitable for the needs of Monte Carlo simulations of breast cancer patients. The phantom modification will be carried out on the soft tissue structure of the breast and the structure of the skin tissue. Cancer cells with a diameter of 2 cm were also added to the left breast at a depth of 2.5 cm. The γ rays from radionuclide 60Co with the energy of 1.1732 MeV and 1.3325 MeV and the probabilities of 0.989 and 0.998, respectively, were exposed to the phantom. The simulation results show that there are significant differences before and after modification. Absorption dose values in the breast with a soft tissue without tumour cells were 0.31 mGy with a relative error of 0.0023, while the absorbency dose rate in the breast with soft tissue and tumour cells was 0.2 mGy with a relative error of 0.0023.

Modifikasi Fantom ORNL_MIRD untuk Kebutuhan Simulasi Monte Carlo Pasien Radioterapi Kanker Payudara Menggunakan MCNPX Layna Miska; Rini Safitri; Irwandi Irwandi; Elin Yusibani
Jurnal Rekayasa Elektrika Vol 15, No 1 (2019)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v15i1.13392

In medical physics, the simulation of radiation dose distribution in the body of radiotherapy patients is generally carried out using the Monte Carlo method. But in conducting this simulation, medical physicists are often faced with the incompatibility problems of phantom geometry with simulation needs. Phantom ORNL-MIRD is the most commonly used phantom in simulation. In a radiotherapy simulation, cancer cells are usually only assumed to be in the phantom’s body without any concrete form. This can cause the administration of radiation doses that are not right on cancer cells. Phantom ORNL-MIRD is also only composed of three materials, namely bone, lung, and the rest are considered as soft tissue. This certainly provides inappropriate simulation results, especially in the case of breast cancer radiotherapy where the breast is composed of adipose tissue. This study aims to make ORNL_MIRD phantom modelling suitable for the needs of Monte Carlo simulations of breast cancer patients. The phantom modification will be carried out on the soft tissue structure of the breast and the structure of the skin tissue. Cancer cells with a diameter of 2 cm were also added to the left breast at a depth of 2.5 cm. The γ rays from radionuclide 60Co with the energy of 1.1732 MeV and 1.3325 MeV and the probabilities of 0.989 and 0.998, respectively, were exposed to the phantom. The simulation results show that there are significant differences before and after modification. Absorption dose values in the breast with a soft tissue without tumour cells were 0.31 mGy with a relative error of 0.0023, while the absorbency dose rate in the breast with soft tissue and tumour cells was 0.2 mGy with a relative error of 0.0023.

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