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All Journal International Journal of Evaluation and Research in Education (IJERE) SITEKIN: Jurnal Sains, Teknologi dan Industri E-Dimas: Jurnal Pengabdian kepada Masyarakat Jurnal Manajemen Aset Infrastruktur dan Fasilitas WAKTU: Jurnal Teknik UNIPA Martabe : Jurnal Pengabdian Kepada Masyarakat J-ADIMAS (Jurnal Pengabdian kepada Masyarakat) JPPIPA (Jurnal Penelitian Pendidikan IPA) Jurnal Abdi: Media Pengabdian Kepada Masyarakat Jambura Journal of Biomathematics (JJBM) Community Empowerment MATHunesa: Jurnal Ilmiah Matematika Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat
Dian Savitri
Departemen Matematika, Universitas Negeri Surabaya, Surabaya.
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Bifurkasi Hopf pada model prey-predator-super predator dengan fungsi respon yang berbeda Dian Savitri; Hasan S. Panigoro
Jambura Journal of Biomathematics (JJBM) Volume 1, Issue 2: December 2020
Publisher : Department of Mathematics, State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjbm.v1i2.8399

Abstract

This article discusses the one-prey, one-predator, and the super predator model with different types of functional response. The rate of prey consumption by the predator follows Holling type I functional response and the rate of predator consumption by the super predator follows Holling type II functional response. We identify the existence and stability of critical points and obtain that the extinction of all population points is always unstable, and the other two are conditionally stable i.e., the super predator extinction point and the co-existence point. Furthermore, we give the numerical simulations to describe the bifurcation diagram and phase portraits of the model. The bifurcation diagram is obtained by varying the parameter of the conversion rate of predator biomass into a new super-predator which gives forward and Hopf bifurcation. The forward bifurcation occurs around the super predator extinction point while Hopf bifurcation occurs around the interior of the model. Based on the terms of existence and numerical simulation, we confirm that the conversion rate of predator biomass into a new super-predator controls the dynamics of the system and maintains the existence of predator.
Pendampingan Penyelesaian Masalah Geometri dan Pengukuran Bagi Guru SD Kecamatan Magersari Mojokerto Manuharawati Manuharawati; Budi Rahadjeng; Dian Savitri; Muhammad Jakfar; Toni Phibeta; Kevin Alifviansyah
J-ADIMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 9, No 2 (2021)
Publisher : (STKIP) PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/j-adimas.v9i2.2281

Abstract

ABSTRAK  Tujuan pembelajaran matematika di SD adalah agar peserta didik memiliki kemampuan pemahaman konsep, penalaran, memecahkan masalah, mengomunikasikan gagasan, dan memiliki sikap menghargai kegunaan matematika dalam kehidupan. Untuk dapat memotivasi para peserta didik dalam mencapai tujuan pembelajaran, setiap guru matematika harus mengetahui dan memahami langkah-langkah dan strategi dalam penyelesaian masalah matematika. Dari sisi lain, berdasarkan wawancara kami dengan Ketua Gugus 02 Kecamatan Magersari Mojokerto dan hasil PKM 2020, sebagian besar guru SD di Kecamatan Magersari belum mempunyai kemampuan dan ketrampilan melakukan pemecahan masalah matematika topik geometri dan pengukuran. Oleh karena itu, dengan metode ceramah, diskusi, dan penugasan serta pendekatan andragogi yang dilakukan secara daring, tim PKM kami melakukan pendampingan pemecahan masalah geometri dan pengukuran bagi guru SD Kecamatan Magersari Mojokerto. Melalui survei pengetahuan (ketrampilan) awal sebelum pendampingan dan survei akhir setelah pendampingan, diperoleh bahwa ada kenaikan pengetahuan (ketrampilan) pemecahan masalah bagi guru SD Kecamatan Magersari Mojokerto. Melalui form kepuasan peserta diperoleh bahwa: 86% peserta mengikuti kegiatan sesuai bidang keahlian; sebesar 100% termotivasi dan akan menerapkan materi yang didapat ke sekolah; sebesar 100% setuju bahwa pemateri menguasai materi, menyampaikan materi dengan variatif, responsif terhadap pertanyaan peserta. Peserta juga berharap untuk dijadikan mitra jika ada kegiatan pendampingan pemecahan masalah untuk topik yang berbeda. Kata kunci: Pengetahuan dan ketraampilan pemecahan masalah, geometri, pengukuran.
Implementasi algoritma genetika dalam mengestimasi kepadatan populasi jackrabbit dan coyote Dian Savitri; Ninik Wahju Hidajati; Hasan S. Panigoro
Jambura Journal of Biomathematics (JJBM) Volume 3, Issue 1: June 2022
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjbm.v3i1.11935

Abstract

This article studies about the parameter estimation using genetic algorithm for a Lotka-Volterra prey-predator model. The secondary data consist of the density of jackrabbit as prey and coyote as predator in Southwest Presscott–Arizona are used. As results, the Mean Absolute Percentage Error (MAPE) are computed to compare the results of parameter estimation and the real data. We have shown that MAPE for jackrabbit and coyote respectively given by 7.75424% and 7.95283%. This results show that the parameter estimation with genetic algorithm using Lotka-Volterra model is passably. Furthermore, some numerical simulations are portrayed to show each population density for the next 100 years.
ONLINE TEACHING IN MATHEMATICS AND NATURAL SCIENCES FACULTY, UNIVERSITAS NEGERI SURABAYA IN EARLY PANDEMIC OF COVID-19: PREPARATION, IMPLEMENTATION, AND ASSESSMENT Wahyu Budi Sabtiawan; Elok Suidibyo; Bertha Yonata; Nugrahani Primary Putri; Guntur Trimulyono; Dian Savitri
Jurnal Penelitian Pendidikan IPA Vol. 5 No. 1 (2020): Juni 2020
Publisher : Perkumpulan Pendidik IPA Indonesia (PPII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jppipa.v5n1.p15-18

Abstract

The study aims to evaluate teaching in Mathematics and Natural Sciences Faculty of Universitas Negeri Surabaya during early pandemic of Covid-19. The evaluation was based on three aspects, that were, preparation of teaching, implementation of teaching, and assessment conducted by lectures. The design of the study was evaluation research adapted from Kirkpatrick Evaluation Design and focused on learning processes. The study evaluated 26 lectures through observation in each class. There were findings that 98% of teaching preparations met criteria. Also, implementation of teaching aspect got good score, that was, 97%. On the other hand, the lectures were scored in lower percentage for assessment aspect compared to the other two aspects. The aspect got 87%. The study found that 13% of  lectures was lack of feedback.Keywords: Online teaching, Universitas Negeri Surabaya, Pandemic of Covid-19
PENINGKATAN EFISIENSI PROSES PEWARNAAN MELALUI PEMBERIAN AGEN FIKSASI RAMAH LINGKUNGAN PADA KELOMPOK BATIK TULIS PASURUAN Dina Kartika Maharani; Dian Savitri; Lydia Rohmawati
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2017)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v2n2.p30-33

Abstract

Batik Indonesia telah ditentukan sebagai salah satu warisan dunia oleh Unesco. Pengembangan inovasi proses produksi batik tulis meliptui proses pewarnaan dan desain motif merupakan faktor penting untuk meningkatkan penjualan dan kapasitas produksi. Kota Pasuruan memiliki produksi batik khas yang dikenal dengan batik sirih kelor. Batik Pasuruan belum populer di kalangan masyarakat, sehingga pelatihan dan pendampingan terkait proses pewarnaan dan desain motif perlu dilakukan. Pelatihan yang dilakukan terhadap kelompok mitra batik pasuruan meliputi pelatihan penggunaan agen fiksasi ramah lingkungan pada proses pewarnaan serta penggunaan alat padder untuk meningkatkan kapasitas produksi dan efisiensi waktu produksi.
PELATIHAN PENDAMPING OLIMPIADE MATEMATIKA SMP KABUPATEN TULUNGAGUNG Budi P. Prawoto; Raden Sulaiman; Dian Savitri; Dini Kinati Fardah
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2019)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v5n1.p21-24

Abstract

This article discusses the activities of community service that raises the theme of mathematics olympiad training with the target is the teachers of math at junior level in Tulungagung regency. The reason for choosing this theme is to see competition in the increasingly rigorous world of education. School is aimed togive birth to outstanding students who can compete in the national, regional, and global arena. One of the problems faced in Tulungagung Regency related to junior high school mathematics is the lack of teachers or supervisors of the Olympics. Solutions offered to MGMP Matematika SMP Tulungagung is held training toteachers of mathematics junior high school for the future teachers can independently accompany students in the arena of mathematics olympiad. The response of the trainees' teachers showed a positive direction. The most important is the increasing insight or knowledge of the ins and outs of the mathematics olympiad.
PEMANFAATAN EDMODO UNTUK MEMPERSIAPKAN GURU MENGHADAPI PEMBELAJARAN ABAD 21 DI MGMP MATEMATIKA SMA KABUPATEN PONOROGO Abadi Abadi; Dian Savitri; Budi Priyo Prawoto; Rudianto Artiono
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2022): Oktober 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/aa.v5i2.4430

Abstract

In order to prepare students who are able to reason at a high level as well as skilled in using technology, it is necessary to hold a training activity for teachers to design and implement HOTS-oriented learning by utilizing Edmodo as a technology-based teaching medium. The training consisted of material reinforcement (the use of Edmodo, HOTS-oriented learning, preparation of HOTS questions) and workshops (teachers were guided in creating accounts and utilizing the features available in Edmodo as well as developing HOTS-oriented learning modules). The participants were able to inform more about the HOTS after training and about 18 teachers agreed that the participants had been able to construct their learning. In addition, there was also an increase in the ability of teachers to use Edmodo as a technology-based learning media. Of the 22 questionnaires submitted, 14 participants agreed that their understanding of Edmodo had increased and more than 90% of the training participants had been able to understand HOTS-based learning. In addition, although not many participants understand the use of Edmodo, the percentage was still above 50%. In general, 90% of the training participants believe that HOTS-based learning can be applied to the Edmodo as a learning medium.
PELATIHAN PEMBUATAN PERANGKAT PEMBELAJARAN KURIKULUM MERDEKA BERBASIS PROJECT BASED LEARNING (PjBL) BAGI GURU SMA PONDOK PESANTREN BAYT AL-HIKMAH Kusumawati Dwiningsih; Dina Kartika Maharani; Dian Savitri; Aiza Alya; Ilo Isaloka; Muhammad Danu Erlangga
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 6 (2023): martabe : jurnal pengabdian kepada masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i6.1920-1933

Abstract

Kurangnya ketersediaan dan rendahnya kemampuan guru untuk menyusun Perangkat Pembelajaran Berorientasi Project Based Learning (PjBL) dan Berbasis Kurikulum Merdeka sebagai sumber belajar peserta didik di masa pemulihan pembelajaran pasca pandemi yang menyebabkan kemauan peserta didik untuk belajar mengalami penurunan, peserta didik tidak bersungguh-sungguh dalam belajar karena terbiasa menggunakan internet sebagai sumber belajar. Program yang dapat dijalankan dengan guru yang tergabung dalam Guru SMA Pondok Pesantren Bayt Al Hikmah sebagai mitra dan tim pelaksana PPM–PKM adalah perlunya peningkatan kompetensi guru terhadap pemahaman, keterampilan, dan kecakapan dalam menyusun perangkat pembelajaran kurikulum merdeka. Metode yang digunakan pada pengabdian ini meliputi 1) Persiapan, 2) Penulisan, 3) Pelaksanaan Pelatihan, 4) Tahap Monitoring dan Evaluasi, dan 5) Publikasi. Kegiatan ini memiliki target yang ingin dicapai yaitu meningkatnya kemampuan guru dalam menyusun perangkat pembelajaran yang Berorientasi Project Based Learning (PjBL) dan Berbasis Kurikulum Merdeka. Indikator keberhasilan kegiatan ini meliputi 1) Penugasan Pembuatan Perangkat, 2) Hasil Angket Respon, 3) Tingkat Kehadiran Peserta, dan 4) Kelengkapan Penugasan.
Dynamic Analysis of a Prey Predator Model with Holling-Type III Functional Response and Anti-Predator Behavior Siti Zulfaniah Umaroh; Dian Savitri
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 21, No 1 (2023): December 2023
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v21i1.23024

Abstract

The prey-predator model in this article reviews the interaction of two populations with a type III Holling -type III functional response and anti-predator behavior. The dynamic analysis starts by determining the basic model construction assumptions, equilibrium and stability points, and numerical simulations using Python. Dynamic analysis results obtained four equilibrium points with types of stability, namely.  which is unstable,   which is asymptotically stable  , and   . Which is stable under certain conditions. The numerical simulation results show double stability at the equilibrium points. and  with the anti-predator behavior parameter value . The anti-predator parameter value  indicates a change in stability that is only the   equilibrium point. Differences in the values of the anti-predator behavior parameters affect changes in system solutions and impact reducing predator populations.
Modified Leslie-Gower Model with Holling Type I Functional Responses and Cannibalism in Prey Rike Farikha Khofifah; Dian Savitri
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 21, No 1 (2023): December 2023
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v21i1.24529

Abstract

The predator-prey model is the mathematical model that describes the interaction behavior between prey and predator. This research discusses the modified Leslie-Gower model by considering the cannibalism behaviors of the prey that contains Holling type I response function, which is a predator with passive characteristics. The stability analysis stage includes determining the system's solution in the form of an equilibrium point, analyzing the local stability of each equilibrium using eigenvalues, and numerical simulation to synchronize the analysis results. Numerical simulations visualized in phase portraits with Python software. The results of the local stability analysis of the system obtained four equilibrium points, namely, equilibrium points  are unstable while is asymptotically stable with certain conditions. The results of numerical simulations show that only the equilibrium point  which is asymptotically stable when the environment carries capacity parameters (e=2.1). Meanwhile, when e=2.878 then, only is asymptotically stable. In this research also using two different initial values, it is concluded that whatever the initial value used, the system solution always converges to the equilibrium points  dan . Changes in environmental carrying capacity affect the dynamics of system solutions.
Co-Authors Abadi Abadi Abadi Abadi Aiza Alya Ajeng Pramesti Putri Alicia Dhea Amara Bagas Saputra Bagas Saputra Bertha Yonata Budi P. Prawoto Budi Priyo Prawoto BUDI RAHADJENG Chih-Hsiung Ku Defi Ayunda Difitri Amalia Dina Kartika Maharani Dina Kartika Maharani Dini Kinati Fardah Dwi Kristiatuti Suwardiah Elok Suidibyo Erman Erman Fadhilatun Ni’mah Farida Chasanah Guntur Trimulyono Hasan S. Panigoro Husni Mubarok Ilo Isaloka Jakfar, Muhammad Kevin Alifviansyah Kusumawati Dwiningsih Lydia Rohmawati Manuharawati Maya Dany Puspitasari Muhammad Danu Erlangga Nadi Suprapto Ninik Wahju Hidajati Nugrahani primary putri Nur Laili Af'idah Qurrotul Aini Raden Sulaiman Rahma Nurisnaini Rike Farikha Khofifah Rinie Pratiwi Puspitawati Rudianto Artiono Rudianto Artiono Ruli Rahmawati Ruli Rahmawati Siti Zulfaniah Umaroh Sukarmin Sukarmin Toni Phibeta Wahyu Budi Sabtiawan