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All Journal Jurnal Teknik Mesin Journal in Teaching and Education Area
Pudjiwati, Sri
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Religion Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Education Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Other

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Menumbuhkan Keterampilan Berfikir Kritis dan Kepedulian Terhadap Lingkungan dengan Pembelajaran Berbasis PBL Fajar Riyadi; Syamsiah, Nur; Pudjiwati, Sri
Journal in Teaching and Education Area Vol. 1 No. 3 (2024): JITERA - Journal in Teaching and Education Area
Publisher : Yayasan Al Hidayah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69673/s2fzxh52

Abstract

Penelitian ini bertujuan untuk mengkaji efektivitas model pembelajaran Problem Based Learning (PBL) dalam menumbuhkan keterampilan berpikir kritis dan kepedulian terhadap lingkungan hidup pada siswa kelas 5 SDN 05 Madiun Lor. Penelitian ini menggunakan metode kuantitatif dengan rancangan quasi-eksperimen pretest-posttest group design. Sampel dalam penelitian ini adalah seluruh siswa kelas 5 SDN 05 Madiun Lor yang dibagi menjadi 2 grup yaitu grup eksperimental dan grup kontrol. Sampel di ambil dengan menggunakan purposive sampling yang peneliti anggap memiliki kemampuan dan karakteristik yang sesuai dengan kebutuhan penelitian. Pre-test dan post-test digunakan untuk menguji hasil efektifitas dari PBL. Dengan menggunakan Uji T, hasil penelitian menunjukkan bahwa terdapat peningkatan yang signifikan pada keterampilan berpikir kritis dan kepedulian terhadap lingkungan hidup siswa yang mengikuti pembelajaran dengan model PBL dibandingkan dengan siswa yang mengikuti pembelajaran dengan model konvensional. Hal ini menunjukkan bahwa model pembelajaran PBL efektif dalam menumbuhkan keterampilan berpikir kritis dan kepedulian terhadap lingkungan hidup siswa
STUDY OF FINITE DIFFERENCE METHOD IN HEAT FLOW SIMULATION OF TWO-CHAMBER THERMOS SEPARATOR MADE OF POLYPROPYLENE USING MATLAB APPLICATIONS Pandriana, Aap; Pudjiwati, Sri; Alva, Sagir; Tarigan, Kontan; Sudarma, Andi Firdaus; Khaerudini, Deni Shidqi
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i2.27803

Abstract

Heat transfer can be defined as transfer of energy from one area to another as a result of temperature differences in objects. This indicates heat transfer not only explains how heat energy is transferred from one object to another, but can also predict the rate of heat transfer that occurs under certain conditions. In this case, what is related to the heat flow model equation is two-chamber thermos separator where the separator is made of polypropylene. This separator functions to prevent the flow of heat from one side to the other side of the thermos tube. Polypropylene is included in the insulator category, although heat transfer still occurs. The heat transfer will be calculated using the finite difference method in parabolic partial differential equations using the Matlab application. The heat transfer process is assumed to occur by conduction, with a separator length of 1 cm. Assume the first side of the divider has a right temperature of 100°c, and the other side 20°c. The temperature point measured on the separator is located in the center of the separator. After completing the solution using the Matlab application with the finite difference method, a heat transfer flow simulation was obtained in the two-chamber thermos separator which shows the heat flow transfer at any time. At 0.1 seconds the temperature at T1 is 2.4°c, while at 10 seconds  is 65.9704°c. Then at 0.1 seconds the temperature at T4 is 0.48°c, while at 10 seconds 19.5436°c. The conclusion is in the separator of the two-chamber thermos there is significant heat flow from the side of the first tube to the other side.
Co-Authors Adnan, Farrah Anis Fazliatun Andi Firdaus Sudarma Chollacoop, Nuwong Deni Shidqi Khaerudini Dianta Ginting Djajadiwinata, Eldwin fajar riyadi Gerald Ensang Timuda I Gusti Ayu Arwati Nono Darsono, Nono Nur Syamsiah, Nur Pandriana, Aap Sagir Alva Sanusi, Yasa Tarigan, Kontan