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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin JISOSEPOL : Jurnal Ilmu Sosial Ekonomi dan Politik
Ilham febriansyah
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Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

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Analysis of Thermal Energy Storage Based  on Phase Change of Sugar Alcohol Type Material for Solar Water Heater System Setiawan, Basuki; Ilham Febriansyah; Ismail
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.ej5fyd17

Abstract

The increasing use of renewable energy sources as a substitute for fossil energy certainly focuses on the importance of energy storage aspects, especially Latent Heat Thermal Energy Storage. Among a number of Phase Change Materials that can be used in the system, Sugar Alcohol with a high latent heat content and a low to medium temperature range, namely below 140 °C, is suitable for application in Thermal Energy Storage technology, especially Solar Water Heaters. This study tested the thermal performance of Xylitol and Erythritol type Sugar Alcohol, both pure and mixed with composite materials. The use of High-Density Polyethylene as much as 10% and 15% by weight is used as a stabilizer material during the liquid-solid phase change transition. The testing method used in this study uses the Hybrid Energy-Temperature Method, where the sample is heated from ambient temperature to reach a temperature of 150 °C and then cooled to reach ambient temperature again, in the charging/discharging cycle process, to analyze the State of Charge and Depth of Discharging of the tested sample. This study also uses the Differential Scanning Calorimetry method and the Heat Capacity-isostep method to determine the phase change behavior of the sample and calculate the total energy content of the selected sample.
PENGARUH DEBT TO EQUITY RATIO (DER) DAN RETURN ON EQUITY (ROE) TERHADAP EARNING PER SHARE (EPS) PADA PT. AGUNG PODOMORO LAND TBK PERIODE 2013-2022: Ilham Febriansyah Ilham Febriansyah
JISOSEPOL: Jurnal Ilmu Sosial Ekonomi dan Politik Vol. 2 No. 1 (2024): JISOSEPOL : Jurnal Ilmu Sosial Ekonomi dan Politik, Edisi Januari-Juni 2024
Publisher : Samudra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61787/gfkjxt22

Abstract

This research aims to determine the effect of Debt to Equity Ratio and Return on Equity on Earning Per Share at PT. Agung Podomoro Land Tbk for the 2013-2022 period, both partially and simultaneously. The research method used in this research is quantitative research. The data analysis used in this research is the classical assumption test, multiple linear regression test, correlation coefficient analysis, coefficient of determination analysis, t test and F test. The results of this research are that the Debt to Equity Ratio and Return on Equity have a significant effect on Earning Per Share with the regression equation Y = 7873.440 + 0.003X1 + 0.003X2. The correlation coefficient value is 0.921, meaning it has a very strong relationship. The coefficient of determination value is 84.4% while the remaining 15.6% is influenced by other factors. Hypothesis testing obtained a value of Fcount > Ftable (19.550 > 4.459) that the variables Debt to Equity Ratio (X1) and Return on Equity (X2) have a significant effect on Earning Per Share (Y) at PT. Agung Podomoro Land Tbk for the 2013-2022 period. Based on the determination test, it can be concluded that the Debt to Equity Ratio and Return on Equity have an effect of 84.4% on Earning Per Share. Meanwhile, the remaining 15.6% was influenced by other variables not examined in this research.
DESAIN PEMBELAJARAN PARTISIPATIF BERBASIS KEARIFAN LOKAL PASAR TRADISIONAL BONE UNTUK MENINGKATKAN ENGAGEMENT SISWA PADA MATERI PASAR DAN AKTIVITAS EKONOMI KELAS X SMA NEGERI 14 BONE Asni; Revalizah; Sherly Awalia; Satri Ani Nur Fadillah; A. Ririn Nurfadika; Nurul Anisah; Melvika Ramadhani; Muh. Surya Akbar; Ilham Febriansyah; Muhammad Haerul; Ahmad Akbar S; Farhan Baharuddin; Sakimufli; Febrian Muharram; Muhammad Rifki; Seldi Afian Afandi; Sultan
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 Nomor 02, Juni 2026 Public
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.49095

Abstract

This study examines the design of participatory learning based on the local wisdom of Bone Traditional Market to improve student engagement in Market and Economic Activities material for Class X students at SMA Negeri 14 Bone. Initial observation of 31 Class X students revealed low engagement in economic learning, despite average scores ranging from 76 to 80. The conventional learning approach that still dominates economic learning has caused low student engagement, both behaviorally, emotionally, cognitively, and agentically. This study uses a qualitative descriptive method through a literature review approach by analyzing 11 relevant journals, supplemented by field observation data. The results show that the participatory learning design consists of five main phases: initial orientation, participatory exploration planning, direct observation at the Bone Traditional Market, data analysis and synthesis, and critical presentation and reflection. The implementation of this design is expected to increase student engagement significantly, from conventional learning which only reaches 45% to 78% based on empirical evidence from local context-based learning research. The Bone Traditional Market, with its richness of socio-economic-cultural context and Bugis-Bone local wisdom, provides a living and dynamic learning laboratory for students in understanding market concepts and economic activities in a contextual, meaningful, and relevant manner. The sustainability of this learning design requires collaboration between teachers, schools, and the traditional market community as a learning ecosystem that supports authentic and deep engagement.
Co-Authors A. Ririn Nurfadika Ahmad Akbar S Asni Farhan Baharuddin Febrian Muharram Ismail Melvika Ramadhani Muh. Surya Akbar Muhammad Haerul Muhammad Rifki Nurul Anisah Revalizah Sakimufli Satri Ani Nur Fadillah Seldi Afian Afandi setiawan, basuki Sherly Awalia sultan