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All Journal Jurnal Penelitian LPPM (Lembaga Penelitian dan Pengabdian kepada Masyarakat) IKIP PGRI MADIUN Jurnal Ilmu Fisika
Reni Martha, Reni
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Astronomy Earth & Planetary Sciences Materials Science & Nanotechnology Physics Social Sciences

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EFEKTIFITAS TEKNIK PAPER SEMINAR UNTUK MENGAJAR MENULIS DITINJAU DARI AKTUALISASI DIRI MAHASISWA Kurniawan, Arri; Lestari, Sri; Martha, Reni
Jurnal Penelitian LPPM (Lembaga Penelitian dan Pengabdian kepada Masyarakat) IKIP PGRI MADIUN Vol 3, No 1 (2015)
Publisher : IKIP PGRI MADIUN

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Abstract

Orientation: Using technique in teaching is used to improve students cerativity and ability in writing that help students in process of prewriting, writing, editing phase, revising, and evaluatin. Researcher tried to campare in using teaching technique based on students self-actualization.. Research purpose: This research is aimed at finding out whether: (1) Paper Seminar technique is more effective than Peer Editing Technique to teach writing skill; (2) the students having high selfactualization have better writing skill than those having low self-actualization; and (3) there is an interaction between teaching techniques and students self-actualization in teaching writing to the third semester students of English Department, IKIP PGRI Madiun in the academic year of 2013/2014. Research design: The research method was an experimental study. The researcher used cluster random sampling to get the sample. There were two classes used as sample. One class consisted of 30 students who were experimental class taught by Paper Seminar technique and the other 30 students were as control class taught by Peer Editing technique. The instruments of collecting data are writing test and questionnaire. The data were analyzed by using multifactor analysis of variance 2x2. Then, it was analyzed by using Tukey test. Main Finding: The research findings show that: (1) Paper Seminar technique is more effective than Peer Editing technique; (2) The students having high selfactualization have better writing skill than those having low self-actualization; and (3) There is an interaction between teaching techniques and students self-actualization in teaching writing. Based on the research findings, in general it can be concluded that Paper Seminar technique is an effective echnique to teach writing. Therefore, the teacher is suggested to apply Paper Seminar technique for teaching writing. Keywords: Paper Seminar technique; Peer Editing Technique; Self Actualization.
Analisis Laju Reaksi Neutron Dalam Sel Bahan Bakar Nuklir Pada Reaktor Cepat Martha, Reni; Shafii, Mohamad Ali; Afdal, Afdal
Jurnal Ilmu Fisika Vol 8, No 2 (2016): JURNAL ILMU FISIKA
Publisher : Jurnal Ilmu Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.129 KB) | DOI: 10.25077/jif.8.2.70-77.2016

Abstract

Analisis laju reaksi neutron dalam sel bahan bakar nuklir pada reaktor cepat sangat penting dilakukan, karena laju reaksi fisi, serapan dan total yang merata dapat mengurangi pemuncakan daya (power peaking) yang tidak diinginkan. Penelitian ini menggunakan metode collision probability (CP) dengan pendekatan flat flux yang melibatkan proses homogenisasi sel bahan bakar nuklir. Dari hasil homogenisasi sel dapat diperoleh distribusi fluks neutron sebagai fungsi energi grup. Selanjutnya dihitung laju reaksi fisi, serapan dan total pada setiap region sel. Laju reaksi fisi mengalami penurunan di daerah energi tinggi akibat adanya peristiwa tumbukan elastik yang menyebabkan neutron lebih mudah kehilangan energy. Laju reaksi serapan berfluktuasi pada bahan bakar, sedangkan pada kelongsong dan pendingin nilainya sangat rendah yaitu kurang dari reaksi/cm3s. Laju reaksi total mempunyai nilai yang tinggi pada daerah energi tinggi yaitu rentang antara   sampai dengan  reaksi/cm3s sedangkan pada daerah energi rendah nilainya sangat kecil yaitu kurang dari  reaksi/cm3s. Kata kunci : fluks neutron, laju reaksi, reaktor cepat
Co-Authors A.A. Ketut Agung Cahyawan W Afdal Afdal Arri Kurniawan, Arri Mohamad Ali Shafii