Garuda - Garba Rujukan Digital

Simulation Nongravitational Dynamics of Cometary Orbit -, Arsini; Saefan, Joko; Rosyid, Muhammad Farchani
JOURNAL OF NATURAL SCIENCES AND MATHEMATICS RESEARCH 2015: JNSMR Volume 1 Issue 1 Year 2015
Publisher : Fakultas Ilmu Tarbiyah dan Keguruan, UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar

The tail formation of a comet near the sun leads to the situation in which the comet continually losses a part of its masses so that the mass of the comet decreases monotonically.Â A comet may also accrete the material encountered along its orbit so that its mass increases. Therefore, the mass of a comet can be regarded as a function of time. In this work we study simulation the dynamics of the orbit of a comet due to the lost of its mass along the formation of its tail and the material accretion along its orbit. It is assumedÂ that the comet under consideration is of the form of a ball and rotates so rapidly that the whole ow its surface catches the radiation of the sun equally.

PENGGUNAAN ALAT PERAGA MULTY BOARD UNTUK MENINGKATKAN HASIL BELAJAR IPA-FISIKA PADA SISWA KELAS VIII A DI SMP NEGERI 5 DEMAK TAHUN PELAJARAN 2008/2009 Pagunanto, Pagunanto; Saefan, Joko
Jurnal Penelitian Pembelajaran Fisika Vol 1, No 1/april (2010): JP2F
Publisher : Jurnal Penelitian Pembelajaran Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Permasalahan dalam penelitian ini yakni apakah penggunaan alatperaga Multy Board dapat meningkatkan hasil belajar IPA Fisikapada materi cermin siswa kelas VIII A di SMP Negeri 5 Demak?Tujuan penelitian ini adalah untuk meningkatkan hasil belajar IPAfisika pada materi cermin siswa kelas VIII A di SMP Negeri 5Demak. Penelitian ini merupakan penelitian tindakan kelas yangdilaksanakan di kelas VIII A SMP Negeri 5 Demak pada semestergenap Tahun Pelajaran 2008 / 2009 yang terdiri dari 27 siswalaki-laki dan 16 siswa perempuan meliputi dua siklus. Hasil siklusdianalisis dengan cara mengolah nilai tes siswa sebelum dilakukantindakan dan setelah dilakukan tindakan melalui dua siklustersebut. Hasil belajar lebih meningkat, pada siklus pertama (1)dari 43 siswa yang tuntas belajar 33 siswa ( 76,74 % ), sedangpada siklus kedua (2) dari 43 siswa yang tuntas belajar mencapai39 siswa ( 90,70 % ) sehingga mengalami peningkatan dari sikluspertama (1) ke siklus kedua (2) sebesar 13,96 %. Berdasarkananalisis data disimpulkan bahwa penggunaan alat peraga âmultiboardâ dalam pembelajaran IPA-Fisika dapat meningkatkanpemahaman konsep pembentukan bayangan pada cermin sehinggahasil belajarnyapun meningkat.

Simulation Nongravitational Dynamic of Cometary Orbit Arsini, Arsini; Saefan, Joko; Farchani Rosyid, Muhammad
Journal Of Natural Sciences And Mathematics Research Vol 1, No 1 (2015): Volume 1, Nomor 1, 2015
Publisher : Faculty of Science and Technology, State Islamic University Walisongo Central Java

The tail formation of a comet near the sun leads to the situation in which the comet continually losses a part of its masses so that the mass of the comet decreases monotonically. A comet may also accrete the material encountered along its orbit so that its mass increases. Therefore, the mass of a comet can be regarded as a function of time. In this work we study simulation the dynamics of the orbit of a comet due to the lost of its mass along the formation of its tail and the material accretion along its orbit. Here, we assume that the comet under consideration is of the form of a ball and rotates so rapidly that the whole of its surface catches the radiation of the sun equally.

Development of Current Stick Teaching Aids to Improve Students' Generic Science Skills Nur Khoiri; Choirul Huda; Joko Saefan; Wawan Kurniawan
JIPF (Jurnal Ilmu Pendidikan Fisika) Vol 6, No 1 (2021): January 2021
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/jipf.v6i1.1907

The study aimed to develop the Current Stick teaching aids and determine its effectiveness to improve students’ generic skills. The type of research is development research which involved 180 students of class X SMAN in Blora were chosen through cluster random sampling. The instrument used to collect the data was a validated question sheet from the assessment of students’ practicum report in using Current Stick teaching aids and the observation sheet. The instruments were addressed to students from the control class and experimental class. The obtained data were tabulated and analyzed by using t-test. The result shows that the experimental class achieved an average percentage of generic science skills of 77.2%, while the control class reached 66.4%. It reveals that the difference in the percentage of generic science skills is the result of using Current Stick teaching aids. Based on the results and discussion, it was found that the development of Current Stick teaching aid is effective to improve students' Generic Science skills.

PENGARUH PENINGKATAN KONSENTRASI Fe PADA LAPISAN TIPIS TiO2 TERHADAP KEMAMPUAN FOTOKATALIS DALAM JELANTAH Ummi Kaltsum; Joko Saefan
Jurnal Ilmiah Teknosains Vol 4, No 2 (2018): JiTek
Publisher : Universitas PGRI Semarang

Penambahan dopan Fe pada lapisan tipis TiO2 telah diketahui berhasil meningkatkan aktivitas fotokatalis dalam jelantah. Tujuan dari penelitian ini untuk mengetahui pengaruh peningkatan konsentrasi dopan Fe pada lapisan tipis TiO2 terhadap fotoaktivitas lapisan tipis. Lapisan tipis dibuat dengan mencampurkan TTiP, AcAc, etanol dan dopan Fe dari Fe(NO3)3.9H2O. Konsentrasi Fe divariasi dalam 1%, 2% dan 3%. Campuran tersebut selanjutnya dideposisikan pada substrat dengan metode spray coathing pada suhu 450 oC dan dianil pada suhu 500 oC selama 2 jam. Lapisan tipis yang terbentuk diuji karakteristiknya berupa morfologi, optis dan struktur kristal dengan SEM, UV Vis spektofotometer, dan xr-difractometer. Fotoaktivitas lapisan tipis diuji dalam jelantah selama 5 jam dengan sinar UV dan hasilnya ditentukan dengan metode titrasi. Hasil penelitian menunjukkan peningkatan konsentrasi dopan Fe meningkatkan kemampuan fotokatalis lapisan tipis. Kemampuan fotokatalis yang paling optimum dihasilkan oleh lapisan tipis Fe-TiO2 3% dengan penurunan ALB dan PV sebesar 45% dan 29%.

Mengajarkan Kemampuan berpikir Tingkat Tinggi dengan Model Problem Based Learning Berbantuan Wondershare Quiz Creator Nur Khoiri; Nur Ifanis Sa'adah; Joko Saefan
Jurnal Penelitian Pembelajaran Fisika Vol 8, No 2 (2017): SEPTEMBER 2017
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jp2f.v8i2.1628

The main purpose of this study is to investigate the effectiveness of Problem base learning assisted wondershare quiz creator on students’ high order thinking skills. The design of this study is true experimental which uses pre-test and post-test. This study is done in SMA Negeri 1 Sayung on September 25J uli − 8Agustus, 2017 which uses two classes as the sample and the sampling technique which the writer uses is Cluster Random technique. Based on the technique, the writer has gotten XI MIPA 1 as the experiment class and XI MIPA 2 as the control class. Moreover, the writer uses test and documentation as the techniques of data collection in this study. Based on the data analysis, the experiment class pre-test score is 32, 3 and the control class’s pre-test score is 31, 96. Meanwhile the post-test score of experiment class is 57, 3 and control class is 41, 6. Based on both classes pretest and posttest results, it shows that there is a significant different between the student’s self-employed and their study results in experiment class with the student’s self employed and their study results in control class. The hypothesis testing shows ttest = 3, 89 and ttable = 1, 667. This result shows that ttest > ttable (3, 89 > 1, 667) which means that H0 is declined. Therefore, it means that Problem based learning assisted wondershare quiz creator Method is able to cultivate students’ high order thinking skills

PENGARUH PENDEKATAN MULTIREPRESENTASI TERHADAP KEMAMPUAN KOGNITIF SISWA DALAM PEMBELAJARAN FISIKA Khilman Najib; Joko Siswanto; Joko Saefan
Journal of Banua Science Education Vol 1, No 1: 2020
Publisher : Universitas Lambung Mangkurat

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh pendekatan multirepresentasi terhadap kemampuan kognitif siswa dalam pembelajaran Fisika. Desain penelitian ini adalah True Experimental Design yang berbentuk Pretest-Posttest Control Design. Populasi dalam penelitian ini adalah 30 siswa kelas VII MTs NU Ma’rifatul Ulum. Sampel dalam penelitian adalah siswa kelas VII A sebagai kelas eksperimen berjumlah 15 siswa dan siswa kelas VII B sebagai kelas kontrol berjumlah 15 siswa. Instrumen penelitian yang digunakan adalah soal posttest yang disesuaikan dengan enam indikator Kemampuan Kognitif Siswa dan lembar keterlaksanaan pembelajaran. Berdasarkan analisis data diperoleh nilai pretest kelas eksperimen 35,47 dan kelas kontrol 26,4. Sedangkan nilai rata-rata posttest kelas eksperimen 63,47 dan kelas kontrol 38. Dari hasil pretest-posttest yang diperoleh dari kedua kelas tersebut menunjukkan bahwa ada pengaruh yang signifikan kemampuan kognitif siswa pada kelas eksperimen dibandingkan kelas kontrol. Analisis statistik menunjukkan nilai thitung 0,000 ttabel 0,05 dengan taraf signifikansi = 0,05, sehingga menolak H0 dan menerima Ha. Adanya perbedaan yang signifikan antara kelas eksperimen dan kelas kontrol maka pendekatan Multirepresentasi memberikan pengaruh terhadap Kemampuan Kognitif siswa dalam pembelajaran Fisika. Kata kunci: Pendekatan Multirepresentasi, Kemampuan Kognitif Siswa.

The Effect of Annealing Temperature Growth on Fe-TiO2 Thin Film Photoactivity in Methylene Blue Ummi Kaltsum; Ema Chintya Permatasari; Ngurah Ayu Nyoman Murniati; Wawan Kurniawan; Joko Saefan
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 8, No 1 (2019): Jurnal Ilmiah pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

The purpose of this study is to determine the effect of annealing temperature growth on Fe-TiO2 thin film photoactivity. This was made by mixing TTIP, AcAc, ethanol, and Iron Nitrate Nanohydrate, after which the obtained mixture was sprayed and annealed on the substrate for two hours using the coating method. The temperature was increased to 500°C, 550°C, and 600°C, with the thin film photoactivity determined in methylene blue using UV light for 5 hours with decreasing values of COD, BOD, and absorbance. The results show annealing temperature growth increased photoactivity of the thin film. The highest photoactivity at 600°C in degrading methylene blue with decreasing values of COD, BOD, and absorbance was 19.56%, 35.84%, and 66.70%, respectively.

Pendampingan Pembuatan Media Pembelajaran Virtual bagi Guru IPA SMP se-Kabupaten Semarang Nur Khoiri; Sigit Ristanto; Choirul Huda; Joko Saefan; Wawan Kurniawan
Journal of Dedicators Community Vol 6, No 3 (2022)
Publisher : Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/jdc.v6i3.2545

One of the reasons for the lack of student learning motivation is the unavailability of learning media that can focus students' attention and help students understand science concepts. The purpose of this PKM activity is to provide assistance to science teachers in overcoming difficulties in the absence of learning media as a tool in the science learning process in junior high schools. The specific target of this PKM is to design, create and use virtual learning media for physics/science materials. The output of this activity is a physics/IPA learning media package for junior high schools. The method used in this activity is mentoring and training. Activities in this PKM are mentoring and training in designing, creating and using virtual learning media for junior high school physics/science materials. This activity was carried out for 32 hours of lessons and monitoring the use of learning media by MGMP physics/IPA teachers in Semarang Regency for 3 months. Activities that have been carried out to overcome partner problems are designing virtual learning media using several Power Point Presentation Developer software, Video Tracker, Latex and PheT. The series of activities consists of four main stages, namely media design, media creation, media use and testing of virtual learning media for junior high school physics/science materials. Junior high school physics/science teachers succeeded in making learning media using Power Point Presentation Developer and Phet on the concepts of temperature and heat

Simulation Nongravitational Dynamic of Cometary Orbit Arsini Arsini; Joko Saefan; Muhammad Farchani Rosyid
Journal of Natural Sciences and Mathematics Research Vol 1, No 1 (2015): June
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

The tail formation of a comet near the sun leads to the situation in which the comet continually losses a part of its masses so that the mass of the comet decreases monotonically. A comet may also accrete the material encountered along its orbit so that its mass increases. Therefore, the mass of a comet can be regarded as a function of time. In this work we study simulation the dynamics of the orbit of a comet due to the lost of its mass along the formation of its tail and the material accretion along its orbit. Here, we assume that the comet under consideration is of the form of a ball and rotates so rapidly that the whole of its surface catches the radiation of the sun equally.

Title

Found 12 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 12 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 12 Documents
Search