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All Journal E-Jurnal Matematika AKSIOMA: Jurnal Program Studi Pendidikan Matematika
TYAS HUSADANINGSIH
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Education Mathematics

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KONTROL OPTIMAL PADA MODEL PENYEBARAN VIRUS KOMPUTER DENGAN KLASIFIKASI PENGAMANAN PANGESTUTI PRIMA DARAJAT; TYAS HUSADANINGSIH
E-Jurnal Matematika Vol 8 No 4 (2019)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2019.v08.i04.p261

Abstract

In this paper, a model of the spread of computer viruses with security classification and nonlinear infection rates is formulated. From the short analysis, is found that the model does not have a virus-free equilibrium point. This show that the virus will always exist in the system and increasingly that can not be avoided. Therefore, control strategy by installing antivirus on subpopulation susceptible low-security level and infective subpopulation aims to minimize the number of infective computers, and minimize the cost related to these strategies. Hence, an important tool, in this case is, optimal control theory. The system solved numerically by using Forward-Backward Sweep method in combination with the fourth-order Runge-Kutta method. Based on the simulation results, the combination of the two controls is effective in suppressing the spread of computer viruses. However, controlling by installing an antivirus on an infected computer has a great influence in suppressing the spread of the computer virus.
ANALISIS KESULITAN GURU MATEMATIKA SMP DAN MTS DI KABUPATEN MALANG MENGGUNAKAN PENDEKATAN SAINTIFIK Tyas Husadaningsih; Pangestuti Prima Darajat
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 8, No 3 (2019)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.618 KB) | DOI: 10.24127/ajpm.v8i3.2465

Abstract

Penelitian ini bertujuan untuk menganalisis kesulitan guru matematika dalam menerapkan Kurikulum 2013. Jenis penelitian ini adalah penelitian deskriptif kualitatif. Metode penelitian ini adalah metode studi kasus. Subjek penelitian adalah guru mata pelajaran matematika yang berjumlah 8 responden. Teknik pengumpulan data dengan cara observasi, wawancara, dokumentasi, dan catatan lapangan. Teknik analisis data dengan cara reduksi data, penyajian data dan penarikan kesimpulan. Hasil penelitian ini menunjukkan bahwa penerapan kurikulum 2013 pada 4 sekolah masih belum baik. Hal ini dapat dilihat dari hasil analisis pada 4 sekolah bahwa guru mengalami kesulitan dalam menerapkan pendekatan saintifik kurikulum 2013. Kesulitan-kesulitan yang dialami guru antara lain (1) guru kurang mampu mengemangkan kegiatan apersepsi, (2) pengembangan kegiatan ini, (3) kurang adanya kreatifitas dalam menerapkan metode pembelajaran sehingga metode yang digunakan guru yaitu metode ceramah, (4) pembelajaran tidak mengacu pada RPP kurikulum 2013. AbstractThis study aims to analyze the difficulties of mathematics teachers in applying the 2013 curriculum. This type of research is a qualitative descriptive study. This research method is a case study method. The research subjects were 8 mathematics subject teachers. Data collection techniques used observation, interviews, documentation, and field notes. Data analysis techniques were data reduction, data presentation and drawing conclusions. The results of this study indicate that the implementation of the 2013 curriculum in 4 schools is still not good. This can be seen from the results of the analysis in 4 schools that teachers have difficulty implementing the 2013 curriculum scientific approach. Difficulties experienced by teachers include (1) teachers are less able to develop apperception activities, (2) development of these activities, (3) less there is creativity in applying the learning method so that the method used by the teacher is the lecture method, (4) learning does not refer to the 2013 curriculum lesson plan.. 
Co-Authors PANGESTUTI PRIMA DARAJAT