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All Journal Jurnal Nosel JURNAL ILMIAH MAHASISWA AGROINFO GALUH Mandalika Mathematics and Educations Journal
Riky Irawan, Riky
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Agriculture, Biological Sciences & Forestry Education Mathematics Mechanical Engineering

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KAJI EKSPERIMENTAL PENGARUH KAPASITAS KONDENSATOR DAN JUMLAH PLAT STAINLESS STEEL ELEKTROLISER TERHADAP DAYA HONDA SUPRA X 125 CC TAHUN 2013 SEBAGAI BAHAN AJAR TEKNIK SEPEDA MOTOR Irawan, Riky
Jurnal Nosel Vol 3, No 4 (2015): April
Publisher : Jurnal Nosel

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.873 KB)

Abstract

The aims of this research are : (1) To investigate the effect of using electrolyzer with variety of  condensator capacity to engine power of  Honda Supra X 125 cc in 2013. (2) To investigate the effect of using electrolyzer with variety number of stainless steel plate to engine power of  Honda Supra X 125 cc in 2013. (3) To investigate the effect of interaction variety condensator capacity and using electrolyzer with variety number of stainless steel plate to engine power of Honda Supra X 125 cc in 2013. This research was quantitative research with experimental method. This research was conducted at Mototech Motocourse Technology, Ringroad Selatan, Kemasan, Singosaren, Banguntapan, Bantul, Jogjakarta. The equipment that was used to measure engine power was Sportdyno V3.3. The population of this research was Honda Supra X 125 cc in 2013 and the sample of this research was Honda Supra X 125 cc in 2013 with JB91E3233452 engine number. This research was analyzed  two-way analysis of variance. This research was using variety of condensator capacity : 1,000 F, 2,200 F, 3,300F and variety of stainless steel plates number : 8 plates, 10 plates, 12 plates. Based on this research the conclusion were : (1) There was an effect of condensator capacity electrolyzer to engine power of Honda Supra X 125 cc in 2013. It was showed in the result of analysis test that stated Fe = 5 more bigger than Ft = 3.55 (Fe > Ft) in 5% significancy.  (2) There was an effect of electrolyzer stainless steel plate number to engine power of Honda Supra X 125 cc in 2013. It was showed in the result of analysis test that stated Fe = 5 more bigger than Ft = 3.55 (Fe > Ft) in 5% significancy. (3) There was an interaction of condensator capacity and number of  electrolyzer stainless steel plate to engine power of Honda Supra X 125 cc in 2013. It was showed in the result of analysis test that stated Fe= 4 more bigger than Ft = 2.93 (Fe> Ft) in 5% significancy. (4) Maximum engine power of Honda Supra X 125 cc in 2013 as big as 9.1 HP from using 3,300 F condensator and 12 plates electrolyzer.
NILAI TAMBAH DAN STRATEGI PENGEMBANGAN AGROINDUSTRI KERIPIK SINGKONG (Studi Kasus Pada Agroindustri Keripik Singkong Ibu Nining di Desa Gunungsari Kecamatan Sadananya Kabupaten Ciamis) Irawan, Riky; Sudrajat, Sudrajat; Puspitasari, Anisa
Jurnal Ilmiah Mahasiswa AGROINFO GALUH Vol 11, No 1 (2024): Januari 2024
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/jimag.v11i1.10400

Abstract

Penelitian ini bertujuan untuk mengetahui: 1) Berapa besar biaya, penerimaan dan pendapatan agroindustri keripik singkong ibu Nining di Desa Gunungsari Kecamatan Sadananya Kabupaten Ciamis, 2) Berapa besarnya nilai tambah agroindustri keripik singkong ibu Nining di Desa Gunungsari Kecamatan Sadananya Kabupaten Ciamis, 3) Bagaimana strategi alternatif pengembangan usaha keripik singkong ibu Nining di Desa Gunungsari Kecamatan Sadananya Kabupaten Ciamis. Penelitian ini menggunakan metode studi kasus dengan menggunakan data primer dan sekunder. Analisis data menggunakan Nilai Tambah, IFAS, EFAS, Diagram SWOT dan Matriks SWOT. Hasil penelitian menunjukkan: 1) Biaya yang dikeluarkan oleh agroindustri keripik singkong ibu Nining di Desa Gunungsari Kecamatan Sadananya Kabupaten Ciamis dalam satu kali proses produksi adalah Rp 575.598,88 dan penerimaan Rp. 750.000 sehingga memperoleh pendapatan Rp. 174.401,12. 2) Nilai tambah yang diperoleh pengusaha agroindustri keripik singkong ibu Nining di Desa Gunungsari Kecamatan Sadananya Kabupaten Ciamis yaitu Rp. 2.955,- per kilogram dan rasio nilai tambah 40 persen. Hal ini berarti bahwa nilai tambah yang dihasilkan termasuk dalam kategori rasio tinggi. Sehingga usaha keripik singkong tersebut harus dikembangkan lebih lanjut karena memiliki potensi yang besar. 3) Alternatif strategi yang dapat diterapkan dalam pengembangan agroindustri keripik singkong ibu nining yaitu terdiri atas mempertahankan dan meningkatkan kualitas produk keripik singkong dengan memanfaatkan dengan kemajuan teknologi produksi, mempertahankan kualitas produk keripik singkong dan meningkatkan pelayanan untuk mempertahankan pelanggan tetap.
Penerapan Contextual Teaching and Learning Dalam Perspektif Ontologi Dan Epistemologi Filsafat Pendidikan Matematika Irawan, Riky; Fuady, Anies
Mandalika Mathematics and Educations Journal Vol 8 No 1 (2026): Edisi Maret
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v8i1.11501

Abstract

Mathematics learning is often perceived as an abstract activity detached from students’ real-life contexts, which results in low meaningfulness and conceptual understanding. The Contextual Teaching and Learning approach offers an alternative by connecting mathematical concepts to students’ real experiences; however, studies examining this approach from the perspective of the philosophy of mathematics education remain limited. This research aims to analyze the implementation of Contextual Teaching and Learning from the ontological and epistemological perspectives of the philosophy of mathematics education. This study employs a qualitative method in the form of library research, combined with descriptive and philosophical analysis of CTL from ontological and epistemological viewpoints within the philosophy of mathematics education. The findings indicate that, ontologically, CTL views mathematics as meaningful and contextual knowledge whose existence is understood through students’ learning experiences. Epistemologically, CTL is grounded in constructivism, positioning students as active subjects who construct mathematical knowledge through experience, interaction, and reflection. The synthesis of these two perspectives affirms that CTL is not merely a teaching approach, but rather a philosophically coherent paradigm of mathematics education. The conclusion of this study demonstrates that the implementation of CTL has a strong philosophical foundation and is relevant for fostering meaningful, contextual mathematics learning oriented toward students’ conceptual understanding.
Co-Authors Anisa Puspitasari, Anisa Fuady, Anies Sudrajat Sudrajat