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English Learning Activities in Heavy Equipment Engineering Study Program at Olat Maras Community Academy Musmulyadin, Musmulyadin; Puspitasari, Pipit
Indo-MathEdu Intellectuals Journal Vol. 4 No. 2 (2023): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v4i2.319

Language learning activities are carried out by language educators so that students acquire appropriate language skills after engaging in a learning experience. The nature of English language learning in the Olat Maras Community Academy Heavy Equipment Engineering Study Program is not only focused on delivering the material contained in the semester learning plan but also paying attention to creative aspects, student enthusiasm, and paying attention to the needs of students humanely and democratically. The lack of learning experience for students in general is not only triggered by the difficulty of the content of the subject matter that cannot be understood by students, but also driven by the teaching approach to a learning activity that creates little learning experience for students during learning. The type of research used is qualitative. The instrument of this research is observation and direct interview. Data analysis techniques consist of data reduction, data presentation, and conclusions. The results of data analysis show that creating a learning atmosphere full of student activity must involve cognitive, affective, and psychographic students, such as inviting students to listen, practice, argue, and use learning media sourced from students' own ideas in following their study program.

Implementasi Algoritma Genetika Untuk Penjadwalan Sekolah (Studi Kasus: SMP Negeri 2 Wonosegoro) Puspitasari, Pipit; Pakereng, Magdalena A. Ineke
J-SAKTI (Jurnal Sains Komputer dan Informatika) Vol 7, No 1 (2023): EDISI MARET
Publisher : STIKOM Tunas Bangsa Pematangsiantar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/j-sakti.v7i1.600

The development of increasingly advanced technology can help in the work, so that it can be done more quickly and easily. One of them is scheduling subjects using genetic algorithms. Genetic algorithm is a technique to find the best solution from several solutions so that it gets the best results according to the stopping criteria if it has done 10 experiments and reached 100 generations. This study uses teacher data, subject data, and time. The results of the study provide a list of optimal schedules with the highest fitness score of 1, where teachers do not have teaching hours at the same time. The system can assist in solving existing problems, which can process data to carry out the scheduling process.

Implementasi Algoritma Genetika Untuk Penjadwalan Sekolah (Studi Kasus: SMP Negeri 2 Wonosegoro) Puspitasari, Pipit; Pakereng, Magdalena A. Ineke
J-SAKTI (Jurnal Sains Komputer dan Informatika) Vol 7, No 1 (2023): EDISI MARET
Publisher : STIKOM Tunas Bangsa Pematangsiantar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/j-sakti.v7i1.600

The development of increasingly advanced technology can help in the work, so that it can be done more quickly and easily. One of them is scheduling subjects using genetic algorithms. Genetic algorithm is a technique to find the best solution from several solutions so that it gets the best results according to the stopping criteria if it has done 10 experiments and reached 100 generations. This study uses teacher data, subject data, and time. The results of the study provide a list of optimal schedules with the highest fitness score of 1, where teachers do not have teaching hours at the same time. The system can assist in solving existing problems, which can process data to carry out the scheduling process.

Improving Connection Ability and Mathematical Disposition of Junior High School Students with Connecting, Organizing, Reflecting, Extending (CORE) Learning Model Supianti , In In; Yaniawati, Poppy; Ramadhan, Adhitya Gilang; Setyaji, Muhamad; Puspitasari, Pipit
Mathematics Education Journal Vol. 16 No. 2 (2022): Jurnal Pendidikan Matematika
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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

The connection ability and disposition of mathematics of junior high school students still need to be improved. This research purpose to analyze the enhancement of connection of mathematics abilities and mathematical dispositions of students who received CORE learning models and conventional learning and to analyze the correlation between the connection abilities and students’ dispositions. This study uses the embedded type Mixed Method. The population was all eighth-grade students one of the public junior high schools in Pangalengan, Bandung Regency, and the sample involved as many as 74 students. The instruments used were a mathematical connection ability test, a disposition questionnaire, an observation sheet, and an interview guide. Analysis of data used two Independent Sample t-Test and Mann Whitney test. The results showed that: 1) the improvement of the connection ability of students who received CORE learning was better than students who received conventional learning 2) the disposition of students who received the CORE learning model was better than students who received conventional learning models, 3) there was no relationship between connection ability and disposition of students using the CORE learning model. The conclusion is CORE model is effective to improve students' mathematical connection ability and mathematical disposition.DOI : https://doi.org/10.22342/jpm.16.2.17079.187-202

Produksi Bahan Bakar dari Limbah Plastik HDPE dan LDPE Menggunakan Metode Pirolisis Istoto, Enggar Hero; Puspitasari, Pipit
Journal of Technology and Engineering Vol 2 No 2 (2024): Journal of Technology and Engineering
Publisher : Yayasan Banu Haji Samsudin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/journaloftechnologyandengineering.v2i2.182

Tujuan penelitian ini menghitung volume dan komposisi bahan bakar yang dihasilkan dari produksi bahan bakar dari limbah plastik polyethylene setiap liternya. Metode: penelitian menggunakan metode pirolisis dengan suhu 450-621°C tanpa menggunakan katalis, dan analisis kuantitif. Analisis kuantitatif menggunakan metode GC-MS. Hasil: Pirolisis limbah HDPE 5 Kg menghasilkan nafta 3,25 liter, bensin 0,85 liter; solar 0,325 liter; dan karbon aktif 18,06 gram. Kesimpulan: Pirolisis limbah HDPE 5 Kg menghasilkan nafta 3,25 liter; bensin 0,85 liter; solar 0,325 liter (88,86% bahan bakar total), dan karbon aktif 18,06 gram. Komposisi bahan bakar yang dihasilkan dalam pirolisis limbah plastik HDPE berupa nafta, bensin, dan solar serta menghasilkan residu berupa karbon.

Perancangan Alat Biotro Portable Sebagai Pendeteksi pH Tanah Alinra, Rizqi Renafasih; Wijaya, Dani; Puspitasari, Pipit
Journal of Technology and Engineering Vol 3 No 1 (2025): Journal of Technology and Engineering
Publisher : Yayasan Banu Haji Samsudin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/journaloftechnologyandengineering.v3i1.190

Perancangan sistem ini mengusung tentang pendeteksian pH tanah dengan indikasi tingkat kesuburan tanah mekanisme kerja system yaitu mengukur tingkat derajat keasaman tanah atau pH tanah dan mengindikasikan kepada user atau pengguna tingkat kesuburan pada tanah. Sistem yang dibuat bertujuan untuk mengetahui tingkat derajat keasaman pada tanah dan dapat mengklasifikasikan jenis tanaman sesuai dengan tingkat pH pada tanah. Hasil yang diperoleh pada sistem pendeteksi pH tanah diperoleh koefisien kelinieritas sebesar 0,996 dan akurasi sistem 92.5% dari hasil pengujian indikasi pH tanah. Dengan mengetahui hasil perbadingan indikasi tingkat keasaman atau pH tanah dapat menyakinkan pengguna dalam menentukan lahan atau tanah yang cocok digunakan untuk pertumbuhan tanaman sesuai dengan tingkat keasaman pada tanah.

Optimalisasi Pemasangan Trafo Sisip untuk Perbaikan Drop Tegangan Pelanggan pada Trafo RTP 033 ULP Peureulak PT PLN (Persero) hasanah, mardini; Puspitasari, Pipit; Oktavia, Yosa; Qatrunnada, Rusvaira; Septiyeni, Tesya Uldira
Power Elektronik : Jurnal Orang Elektro Vol 14, No 1 (2025): POWER ELEKTRONIK
Publisher : Politeknik Harapan Bersama Tegal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/polektro.v14i1.7827

This study aims to analyze the installation of insert transformers in overcoming voltage drop problems in customers at the RTP 033 transformer of ULP Peureulak PT PLN (Persero). The research was conducted at transformer RTP 033 located in the Paya Uno area, Rantau Peureulak District, East Aceh, which experienced significant voltage drop problems. Through manual calculations using the formula in the RST phase, the voltage drop values were 22.99%, 20.63%, and 21.05% before the installation of the insert transformer. After the installation of the insert transformer, the voltage drop value was successfully reduced below the permitted standard of less than 5% with the voltage drop value for each phase being 2.18%, 2.63%, and 3.06%. The measurement results in the field show a significant increase in distribution voltage at points that previously experienced a decrease. In addition to improving voltage quality, the installation of the insert transformer also had a positive impact on increasing electrical energy consumption. There was an increase in kWh sales of 13.14% after the installation of the insert transformer. Based on the research results, it can be concluded that the installation of an insert transformer is an effective solution to overcome the voltage drop problem in the distribution network. Thus, the quality of electricity service to customers can be improved, and the risk of damage to electronic equipment due to voltage fluctuations can be minimized.

Analisis Dampak Penggunaan Panel Surya Terhadap Pemakaian Sendiri Pada Pembangkit Listrik Hanaldi, Wahyu; Puspitasari, Pipit; Ramaputra, Setianto
Jurnal Teknik Elektro Vol 8, No 2 (2024): JURNAL TEKNIK ELEKTRO
Publisher : University of Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jte.v8i2.13865

Solar Panel have become one of the main solutions in dealing with dependence on fossil energy and to support energy sustainability. This research aims to analyze the impact of using solar panels on self-use in power plant administration buildings by considering efficiency, cost savings and their contribution to reducing carbon emissions. Based on data on energy use and solar energy production in 2023 at power plants in Jakarta, it was found that the implementation of Solar Panel can produce 697,349,378 kWh of energy and can significantly reduce operational costs by Rp 923,879,937.66

PENINGKATAN SAVING KWH DAN PENEKANAN SUSUT NON-TEKNIS MELALUI OPTIMALISASI P2TL DI PT PLN (PERSERO) ULP MUARA TEBO Hasanah, Mardini; Puspitasari, Pipit; Ramadan, Surya; Yamashika, Herris
Rang Teknik Journal Vol 9, No 1 (2026): Vol. 9 No. 1 Januari 2026
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v9i1.7622

Electricity is an essential need in almost all human activities, making it a vital component of everyday life. However, in the process of distributing it to customers, there is often a difference between the energy delivered and the energy sold, known as energy loss or shrinkage. This shrinkage can be categorized into two types, namely technical and non-technical shrinkage. PT PLN (Persero) uses the Jogja formula to map and analyze these two types of shrinkage, allowing a percentage comparison between technical and non-technical shrinkage. The focus of this research is on efforts to overcome non-technical shrinkage, especially in Muara Tebo ULP. PT PLN (Persero) implements preventive measures, including public education on the efficient and safe use of electrical energy, as well as the routine implementation of the Electricity Usage Control (P2TL). The purpose of these measures is to reduce non-technical losses that occur in the use of electricity. The results of the P2TL implementation in ULP Muara Tebo showed an increase in average kWh generation from 193,193 kWh in the January to May period to 216,582 kWh in June. This increase contributed significantly to the reduction of total shrinkage by 2.51% in June. This research confirms that a structured enforcement and education strategy can effectively improve energy distribution efficiency and reduce non-technical losses, supporting the overall operations of PT PLN (Persero).Keywords: energy loss, non-technical loss, formula jogja, P2TL

Analysis Of Solar Panel Efficiency In Solar Power Generation Systems As A Learning Media For Renewable Energy In Tropical Areas Puspitasari, Pipit
Jurnal Ilmiah Mandala Education (JIME) Vol 12, No 1 (2026): Jurnal Ilmiah Mandala Education (Januari)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jime.v12i1.10188

Renewable energy, particularly solar energy, plays a crucial role in addressing the limitations of fossil fuels and environmental sustainability issues, especially in tropical regions such as Indonesia. In addition to serving as an alternative energy source, Solar Power Generation Systems (SPGS/PLTS) also have potential as contextual learning media in vocational education. This study aims to analyze the efficiency of solar panels in a solar power generation system and examine their utilization as learning media for renewable energy education among students of the Renewable Energy Engineering Program at Akademi Komunitas Olat Maras (AKOM). This research employed a quantitative approach using descriptive methods and simple experiments. The research object was the solar power generation system and solar panels, while the research subjects were students involved in the learning activities. Data were collected through measurements of solar irradiance, input and output power, learning observations, and simple questionnaires. The results indicate that the solar panels achieved an operationally feasible efficiency level under tropical conditions. Furthermore, the use of the solar power system as a learning medium increased student engagement and improved their understanding of renewable energy concepts. This study concludes that solar power systems are effective as contextual and practical learning media in vocational education and have positive implications for the development of renewable energy learning and curriculum.

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