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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Indonesian Mining Journal Teknologi Indonesia Metalurgi Jurnal Teknologi Bahan dan Barang Teknik Edunity: Kajian Ilmu Sosial dan Pendidikan Journal Research of Social Science, Economics, and Management Innovative: Journal Of Social Science Research Indonesian Mining Journal JURNAL REKAYASA KIMIA & LINGKUNGAN
Fajar Nurjaman
UPT Balai Pengolahan Mineral Lampung, LIPI Jln. Ir. Sutami Km. 15 Tanjung Bintang, Lampung Selatan, 35364
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The Effectiveness Of Team Games Tournament (TGT) Method In Teaching Writing Descriptive Text At The First Grade Students Of SMAN 1 Mandirancan Nurjaman, Fajar
Innovative: Journal Of Social Science Research Vol. 3 No. 5 (2023): Innovative: Journal of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

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Abstract

Menulis merupakan salah satu keterampilan berbahasa yang harus dipelajari oleh siswa, karena menulis merupakan cara kreatif untuk mengungkapkan gagasan selain berbicara. Sama pentingnya dengan membaca, mendengarkan, dan berbicara, siswa juga perlu mengetahui cara menulis. Tujuan dari penelitian ini adalah untuk mencari keefektifan TGT dalam pengajaran menulis dan terdapat perbedaan yang signifikan antara nilai menulis siswa pada Pre-test dan Post-test setelah diberikan metode TGT. Metodologi yang digunakan dalam makalah ini adalah Quasi Eksperimental Research. Sampel penelitiannya adalah kelas X IIS 5 yang terdiri dari 30 siswa sebagai kelompok eksperimen dan kelas X IIS 4 yang terdiri dari 30 siswa dan penulis menggunakan sampling perbandingan. Pengumpulan data dilakukan dengan menggunakan metode tes (pre-test dan post-test). Hasil pre-test dan post-test berbeda. Pada kelas eksperimen pre-test rata-ratanya adalah 62,8 dan post-test setelah diberikan perlakuan Teams Games Tournament (TGT) pada kelas eksperimen adalah 83. Sedangkan pada kelompok kontrol rata-rata pre-testnya adalah 58,1 dan post-testnya tanpa diberikan perlakuan. pengobatan adalah 67,9. Setelah dilakukan perhitungan data diperoleh thitung sebesar 2,602 dan ttabel dengan df (58) pada taraf 0,975 (5%) sebesar 2,002. Karena thitung > ttabel maka dapat disimpulkan hipotesis diterima. Sedangkan untuk mengukur besaran efektif berdasarkan teori Cohen, dalam penelitian ini Teams Games Tournament termasuk dalam tingkat efektif sedang.
Utilization of Digitalization in Improving the Quality of Services and Information in Sumurkondang Village, Cirebon Fauziah, Merlinda Intan; Nurjaman, Fajar; Firizki, Rayhan Syawal; Fitriyanti, Elvira; Suryalaksana, Alif
Journal Research of Social Science, Economics, and Management Vol. 4 No. 10 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i10.858

Abstract

Digitalization plays a transformative role in improving public service delivery and information dissemination, particularly in rural areas. This study explores the implementation of digitalization in Sumurkondang Village, Cirebon, and its effects on administrative efficiency, accessibility, and community involvement. Employing a qualitative approach with a descriptive case study design, the research involved in-depth interviews, participatory observations, and document analysis. The findings reveal that digitalization improves service quality and ease of access, particularly among younger residents. However, challenges such as low digital literacy among older populations, limited infrastructure, and lack of awareness hinder widespread adoption. Despite some basic digital training conducted by the village government, participation remains low, and skepticism toward digital platforms persists among older users. The study concludes that while digitalization holds great promise for rural development, its success depends on inclusive training, stronger infrastructure, and active community engagement. Recommendations include targeted digital literacy programs, improved internet access, and collaborative efforts between local governments and external partners. These efforts can foster sustainable digital transformation and serve as a model for similar rural communities in Indonesia.
Analisis tekno ekonomi teknologi pengolahan bijih nikel laterit menjadi Nickel Pig Iron (NPI) menggunakan Hot Blast Cupola Furnace Herlina, Ulin; Nurjaman, Fajar; Handoko, Anton Sapto; Shofi, Achmad
Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v10i1.322

Abstract

Processing technology on nickel laterite ore to becomeNickel Pig Iron (NPI) using Hot blast cupola furnace issuch technology developed to push up the growth ofprocessing industry iron/steel contains nickel inIndonesia. The need of this technology is more urgentlyalong with the enforcement of regulation no 4/2009 inmineral and coal mining law, which prohibits all industryto export raw mineral products without preliminaryprocess. For this reason, in this research, technoeconomicanalysis for designing nickel lateriteprocessing plant to become NPI using hot blast cupolafurnace was carried out. This research was conductedbased on several data processes taken from nickellaterite smelting using hot blast cupola furnace. Technoeconomic analysis showed processing nickel laterite oreto become NPI using 3 units of hot blast cupola furnacewith total capacity 9 ton/day at kabupaten SouthKonawe, Southeast Sulawesi province was feasible tobe carried out, whereas feasibility investment score wasfair enough. The net present value (NPV) was IDR11,278,271,245, and internal rate of return (IRR) was23.28% with a payback period (PBP) of 4 years and 10months.
Studi pengaruh kadar mangan dan temperatur austenisasi terhadap struktur mikro dan sifat mekanik baja mangan Bahfie, Fathan; Aleiya, Zakhrofa; Milandia, Anistasia; Nurjaman, Fajar
Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v10i1.317

Abstract

High manganese steel or austenitic manganese steelcommonly are used in mining industries such as thecomponent in an excavator, hammer mill, crusher, andjaw crusher plates. Those components are the alloy caststeel with containing manganese (Mn) about 11-18%.The mechanical properties of austenitic manganesesteel are depending on the amount of manganese andcarbon. The austenitic steel has three dominantproperties, i.e. high hardness; good wear resistance, andhigh impact resistance. The objectives of this researchare investigating the effect of the composition ofmanganese and the austenitization temperature on themicrostructure and mechanical properties of austeniticmanganese steel. Each variation of manganesecomposition was 5.87%. 9.42% and 15.28%. It washeated at 950, 1000 and 1050oC for 60 minutes and thenquenched with water. The result showed that the highesthardness was 46 HRC where the composition ofmanganese and the austenitization temperature was5.87%. and 1050oC. The lowest hardness number was16.3 HRC where the content of manganese and thetemperature was 9.42%. and 1050oC. The results agreedwith the microstructure of the increase in carbides andthe composition of manganese increased too. For thewear resistance properties, the optimum one was 6.78 x10-6 mm3/m at the composition of manganese andtemperature of 5.87% and 1050oC.
Co-Authors Aleiya, Zakhrofa Anistasia Milandia, Anistasia Anton Sapto Handoko, Anton Sapto Aritonang, Partogi A.F. Azwar Manaf Bahfie, Fathan Diah Susanti Ediman Ginting Eko Nugroho Erik Prasetyo Firizki, Rayhan Syawal Fitriyanti, Elvira Herlina, Ulin Karo Karo, Pulung Merlinda Intan Fauziah Prasetyo, Arif Eko Prilitasari, Nurbaity Marsas Shofi, Achmad Sipahutar, Wahyu Solafide Sofi, Achmad Suryalaksana, Alif Tumpal Ojahan, Tumpal Wahyuningsih Wahyuningsih Widi Astuti