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All Journal MATEMATIKA JHP17 (Jurnal Hasil Penelitian) Attractive : Innovative Education Journal
ponidi, ponidi
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Mathematics Other

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PENGEFEKTIFAN USAHA MEDIS DALAM MEMBATASI EPIDEMI DENGAN KONTROL BANG-BANG cahyadi, heru; ponidi, ponidi
MATEMATIKA Vol 5, No 2 (2002): Jurnal Matematika
Publisher : MATEMATIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (62.185 KB)

Abstract

Dalam makalah ini akan dibahas mengenai aplikasi kontrol optimal dengan kontrol bang-bang pada efektifitas usaha medis dalam membatasi epidemi. Mula-mula dimodelkan tingkat perubahan jumlah penduduk yang terinfeksi penyakit dengan adanya usaha medis yang dilakukan yang menjadi kendala pada kontrol optimal ini, kemudian dimodelkan fungsi objektif yaitu akan diminimumkannya cost usaha medis dalam membatasi epidemi dengan batas akhir yang ditentukan. Kemudian dengan teori kontrol optimal yang menggunakan kontrol bang-bang akan dihasilkan sistem yang optimal. Dan hasilnya akan disimulasikan dengan kompute menggunakan software Mathlab.
Model of Utilizing Discovery Learning to Improve Mathematical Learning Achievements Ponidi, Ponidi; Waziana, Winia; Kristina, Marilin; Gumanti, Miswan
Attractive : Innovative Education Journal Vol 2 No 1 (2020): Attractive : Innovative Education Journal
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/aj.v2i1.27

Abstract

The background of this classroom action research was to find out the low level of learning achievement of fourth grade students of SDN 2 Suban on Mathematics. This is because the learning model used is less attractive to students. The researcher conducted this study with the aim of analyzing the design of learning, the process of learning activities, learning models, and learning achievement of fourth grade students on Thematic subjects. Based on the fact that the student's learning outcomes are low, the writer conducts classroom action research with the intention of improving student learning outcomes. Collaborating with fellow writers trying to use the Discovery Learning model in learning carried out in the first cycle and second cycle, to improve the learning achievement of fourth grade students of SDN 2 Suban. The plan for improving learning through this research turns out that using the Discovery Learning model can improve student learning achievement. From the evaluation results, it can be seen that the percentage of learning outcomes of students who can achieve KKM with the acquisition of the percentage of pre-cycle 30%, cycle I 65%, cycle II 91%. Thus the author feels the need to master and use various learning models in each learning activity in the School. Keywords: Discovery Learning, Mathematics and Learning Achievement
PENGARUH PENURUNAN SUHU KARBURATOR MOTOR HONDA DENGAN THERMO ELECTRIC COOLER TERHADAP PERFORMANCE MESIN Ponidi, Ponidi
JHP17 (Jurnal Hasil Penelitian) Vol 5 No 1 (2020)
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jhp17.v5i1.4178

Abstract

In the operation of a gasoline motor, ideal air temperature that enters the combustion chamber influenced by environmental air temperature which affects the results of the combustion process. To produce optimal performance from a gasoline motorbike with the ideal air temperature, so the ideal ambient air temperature or space is needed. In this study, we will try to reduce the air temperature before entering the combustion chamber using an electronic component called TEC. research using the Honda Supra X 125 motorcycle brand The results of the analysis show that using electronic components is able to reduce the air temperature before entering the combustion chamber and the result is the temperature that experienced the highest performance increase at 250C with a Ne value of 8.8 HP, T value of 9,01 N.m, the lowest FC value is 0.47586 kg / hour, and the lowest SFC value is 0.618 kg / hour Keywords: Air Temperature, TEC, Performance Mesin
Co-Authors cahyadi, heru Kristina, Marilin Miswan Gumanti Murhadi Murhadi Winia Waziana