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All Journal Jurnal Pendidikan IPA Indonesia Jurnal Spektra Seminar Nasional Lahan Suboptimal
S. Latifah, S.
Universitas Negeri Jakarta
Agriculture, Biological Sciences & Forestry Education Physics Other

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ANALISIS SOLUSI PERTURBATIF PERSAMAAN GROSS PITAEVSKII UNTUK BEBERAPA MODE (Review) Latifah, S.; Prayitno, T. B.; Marpaung, M. A.
Jurnal Spektra Vol 13, No 1 (2012): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

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Abstract

Di makalah ini diturunkan ulang solusi Perturbatif Persamaan Gross-Pitaevskii untuk beberapa mode yang telah dibahas pada makalah (Physics Letters A, 278(2001):252-230). Teori perturbatif membahas prosedur sistematis untuk mendapatkan solusi terdekat terhadap masalah perturbatif dengan membangun pengetahuan solusi eksak dari kasus tidak terperturbatif. Pada kasus kuantum, perturbatif merupakan gangguan terhadap suatu Hamiltonian energi. Dari sudut pandang yang luas, dinamika gas-gas yang terjebak dalam perangkap magnetik pada suhu yang sangat rendah dapat dijelaskan oleh persamaan fungsi gelombang untuk kondensasi yang dikenal dengan Persamaan Gross-Pitaevskii. Persamaan Gross-Pitaevskii adalah persamaan nonlinear klasik yang mempertimbangkan efek-efek dari interaksi partikel, dan oleh karena itu persamaan ini dapat diperlakukan sebagai sebuah generalisasi nonlinear, yaitu sebagai osilator kuantum makroskopik. Persamaan Gross-Pitaevskii memiliki dua aspek penting, yaitu aspek nonlinear yang menunjukkan persamaan nonlinear Schrödinger, sedangkan aspek linear menunjukkan persamaan Schrödinger dengan potensial osilator harmonik apabila suku nonlineardihilangkan. Dalam makalah ini aspek nonlinear dalam persamaan Gross-Pitaevskii dianggap kecil. Osilator harmonik telah banyak dibahas dalam bidang kuantum dan model-model dari osilator harmonik telah banyak menjelaskan fenomena fenomena mikroskopik.Kata kunci: Persamaan Gross-Pitaevskii; Solusi Persamaan Schrödinger osilator harmonik; Teori Perturbatif.
MSG – Manfaat Micin untuk Tanaman Padi (Mantap) sebagai Pangan yang Bebas Bahan Kimia dan Ramah Lingkungan Guna Menjaga Kesehatan Masyarakat Menuju Indonesia Berkemajuan Bela, Dinda Velita; Latifah, S.
Seminar Nasional Lahan Suboptimal 2019: Prosiding Seminar Nasional Lahan Suboptimal “Smart Farming yang Berwawasan Lingkungan untuk
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Bela DV, Latifah S. 2019. MSG-benefits of micin for rice (steady) plants as a food that is chemical-free and environmentally friendly to maintain public health towards a progressing Indonesia. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal 2019, Palembang 4-5 September 2019. pp. 502-507. Palembang: Unsri Press.Indonesia is one of the countries that has the largest population in the world, 260,580,739 people whose staple food is rice (cooked rice from rice). Over time, the need for rice is increasing, as a result farmers take a way out by using chemicals to produce maximum harvest, even though the use of chemicals is not good for the health of the body, especially if consumed long and excessive. But in reality in various regions the use of chemicals as fertilizers is still very high. Thus, one way to reduce the use of chemicals in rice plants is by using MSG (Monosodium Glutamate) as a maximum fruit-producing auxiliary material. The content of compounds in MSG can increase water content during the summer or dry and is able to nourish the development of plants. So that MSG can prevent the occurrence of water resistance, fertilize plants and make plants look fresh with greener leaves, dense and healthy rice. So with the use of MSG, besides being environmentally friendly, rice is also free of chemicals.Keywords: environmentally friendly, MSG, rice growth
The 7E Learning Cycle Approach to Understand Thermal Phenomena Maskur, R.; Latifah, S.; Pricilia, A.; Walid, A.; Ravanis, K.
Jurnal Pendidikan IPA Indonesia Vol 8, No 4 (2019): December 2019
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v8i4.20425

Abstract

Conceptual understanding is often a problem in science learning, and this issue has become the point of science education experts, including in Indonesia. Lately, ten articles in Indonesia and six articles in other countries have discussed the model of the 7E Learning Cycle. It was mentioned that this model is able to increase learners’ conceptual understanding. This research intended to reveal the effectivity of physics learning using the 7E Learning Cycle in improving students’ understanding of temperature and heat concepts. The research design is quasi-experimental with a non-equivalent control group design. The sample was senior high school students. Objective test in the form of multiple choices equipped with reason was employed as the data collection instrument. Based on the data analysis, the value of Effect Size was 0.5 and belonged to the medium category. In other words, the use of the 7E Learning Cycle model is sufficient to improve the learners’ understanding of temperature and heat concepts. This could be seen from the success of the learning process that integrates the whole seven stages with the seven indicators of conceptual understanding in detail. Thus, the 7E Learning Cycle could be effectively applied and can increase the students’ conceptual understanding.
Academic Self-Efficacy Inventory: Using Rasch Analysis to Develop and Evaluate Self-Efficacy Rating Scales Yuberti, Y.; Susilowati, N. E.; Velina, Y.; Latifah, S.
Jurnal Pendidikan IPA Indonesia Vol 13, No 1 (2024): March 2024
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v13i1.47091

Abstract

As many studies have proven, self-efficacy positively affects learning performance. Therefore, many instruments have been developed to measure self-efficacy. To be used for educational purposes, the instrument must be proven valid and reliable. This study aims to develop and evaluate the Academic Self-Efficacy Inventory (ASEI) that meets the criteria to be applied as a self-efficacy instrument. This research is a two-phase study designed following the recommendations for scale design and development.A total of 505 Indonesian high school students majoring in science were involved as respondents to test the 20-item rating scale. As a result, all questionnaire items met the fit category with an item reliability score of 0.94, and the unidimensionality scale also met the variance value explained by measures and unexplained variance criteria. Thus, ASEI is declared suitable, reliable, and valid for measuring students' self-efficacy on the topic of light and sound waves. This research provides results in the form of a self-efficacy instrument on the topic of light and sound waves and a validity test with a high value, which is useful for readers to have confidence in the quality of the study results. 
Co-Authors Bela, Dinda Velita M. A. Marpaung, M. A. Maskur, R. Pricilia, A. Ravanis, K. Susilowati, N. E. T. B. Prayitno Velina, Y. Walid, A. Yuberti