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All Journal Medicina Jurnal Penelitian Pendidikan Matematika dan Sains SITEKIN: Jurnal Sains, Teknologi dan Industri E-Dimas: Jurnal Pengabdian kepada Masyarakat Didacticofrancia: Journal Didactique du FLE English and Literature Journal Jurnal EMT KITA BAREKENG: Jurnal Ilmu Matematika dan Terapan Communication in Biomathematical Sciences WAKTU: Jurnal Teknik UNIPA Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Matematika UNAND Jurnal Abdi: Media Pengabdian Kepada Masyarakat Jambura Journal of Biomathematics (JJBM) MATHunesa: Jurnal Ilmiah Matematika Jurnal Pengabdian Masyarakat dan aplikasi Teknologi Franconesia Journal of French Teaching, Linguistics, Literature, and Culture Indonesian Journal of Computational and Applied Mathematics
DIAN SAVITRI
Department of Child Health, Udayana University Medical School/Sanglah Hospital Denpasar
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 Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Transportation Other

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Prey predator Model with Holling Type II Functional Response and Hunting Cooperation of Predators Fitri, Davina Alma; Savitri, Dian
MATHunesa: Jurnal Ilmiah Matematika Vol. 12 No. 3 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathunesa.v12n3.p637-645

Abstract

This research examines the interaction of two populations with Holling type II response functions and hunting cooperation in predators. The mathematical model developed is based on natural phenomena, namely the interaction between wolves and deer. Wolves often cooperate to hunt in packs, with most of their prey consisting of physically or health weak individuals, one of which is deer. The dynamics analysis begins with determining the basic assumptions of model construction, equilibrium and stability points, and numerical simulation using PPlane. The results of the dynamics analysis show that there are three equilibrium points with stability types, namely E1(0,0) , which is unstable, E2(k, 0) and E3 which is asymptotically stable under certain conditions. Numerical simulation results show the existence of double stability at equilibrium points E2 and E3 with prey to predator conversion parameter value 2.03 shows a change in stability that only occurs at point E2 . The difference in the value of prey to predator conversion affects in the change in the system solution and has an impact on reducing the predator population.
Penggunaan les connecteurs argumentatifs dalam debat pada kanal Youtube Touche pas à mon poste Ali, Muhamad Restu; Savitri, Dian; Ismail, Subur
Franconesia Vol. 1 No. 1 (2022): Franconesia: Journal of French Teaching, Linguistics, Literature and Culture
Publisher : Program Studi Pendidikan Bahasa Prancis FBS UNJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/franconesia.11.1

Abstract

This study aims to describe the types of les connecteurs argumentatifs in the debate entitled The Place of Islam in the Republic: Marine Le Pen facing Jean Messiha on the Touche Pas à Mon Poste Youtube Channel based on its use in the context of the statement in the debate. The types of les connecteurs argumentatifs are based on the theory of les connecteurs argumentatifs from Riegel (2009) which include; (1) opposition-concession, (2) explanation and justification, (3) complement, and (4) conclusion. This study uses a descriptive approach. The data analysis method used refers to the qualitative data analysis technique according to Miles and Huberman. Data analysis was carried out on statements in the debate that used les connecteurs argumentatifs and described the function of these conjunctions according to the context of the sentence. The results of this study indicate that there are 24 les connecteurs argumentatifs contained in the debate. From the 24 data found, 6 data were obtained for opposition-concession, 7 data for explanation and justification, 5 complementary data and 6 data for conclusions used by the speaker in statement. Based on the research that has been done, it can be said that the statement in the debate entitled The Place of Islam in the Republic: Marine Le Pen facing Jean Messiha on the Touche Pas à Mon Poste Youtube Channel contains les connecteurs argumentatifs.
Representasi komunitas Asia di Prancis pada gerakan anti rasisme Je Ne Suis Pas Un Virus dalam media daring Le Figaro Dino, Awan; Ratna; Savitri, Dian
Franconesia Vol. 1 No. 1 (2022): Franconesia: Journal of French Teaching, Linguistics, Literature and Culture
Publisher : Program Studi Pendidikan Bahasa Prancis FBS UNJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/franconesia.11.4

Abstract

This research aims to explain the representation built by the author of Le Figaro news article in this discourse towards the Asian community in France with structures according to Teun Van Dijk. This descriptive qualitative research was conducted to find out and obtain the structures of critical discourse from the perspective of Teun A van Dijk in the online media Le Figaro with the study of critical discourse analysis. The data sources used are news articles published by Margaux d'Adhémar from Le Figaro online media in January 2020. The objects of this research are words, phrases, clauses, and sentences contained in the article. The data collection technique of this research comes from documentation study research. The data analysis technique used is van Dijk's critical discourse analysis study model which includes three structures, namely the text dimension, social cognition, and social context. If analysed in general, the news writer wants to convey a message about the social problems that befall some Asian communities in France after the emergence of the Covid-19 case in France. These problems are racist acts that occur to the Asian community in France. So that this incident is the background for the emergence of the anti-racism movement "Je Ne Suis Pas Un Virus". Through the discourse strategy model of Teun A van Dijk, this research found that the information in each sentence contained in the text is related to the next information sentence. This study also found that the text of this news article is one of the representations of the social conditions of the Asian community in France who experience racist acts.
Dynamical Analysis of Holling Tanner Prey Predators Model with Add Food in Second Level Predators Salsabila, An Nisa; Savitri, Dian
Jambura Journal of Biomathematics (JJBM) Volume 5, Issue 2: December 2024
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjbm.v5i2.25753

Abstract

This article discusses the Holling Tanner prey predator model and Holling type II response function with additional food in the second level predator. The dynamic analysis of the system begins with determining the equilibrium point, analyzing the stability of the equilibrium point, and numerical simulation with python. The results of the dynamic analysis obtain seven equilibrium points, namely E1 extinction in three populations, point E2 extinction in the population of prey and first level predator, point E3 extinction in the first and second level predator populations, point E4 extinction in the second level predator population, point E5 extinction in the first level predator population, and point E6 the three populations are not extinction. The results of the stability analysis around the equilibrium point E1, E2, E3 are shown to be saddle unstable, then E4, E5, E6 are asymptotically stable with certain conditions. Numerical simulation is applied to determine the validity of the analytical results. The simulation results illustrate changes in the system solution in the form of phase portraits. The bifurcation diagram of the numerical continuation of the maximum predation rate parameter of the second-level predator (β) shows the existence of Hopf bifurcation when maximum predation rate parameter of the second-level predator with β = 2.1014232 and Transcritical bifurcation when maximum predation rate parameter of the second-level predator with β = 3.197.
UNRAVELING THE IMPACT OF THE MEMORY, THE COMPETITION, AND THE LINEAR HARVESTING ON A LOTKA-VOLTERRA MODEL PANIGORO, HASAN S.; RAHMI, EMLI; SAVITRI, DIAN; BEAY, LAZARUS KALVEIN
Jurnal Matematika UNAND Vol 13, No 4 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.4.257-269.2024

Abstract

The harvesting of population has a dominant influence in balancing the ecosystem. In this manuscript, the impact of harvesting in addition to competition, and memory effect on a prey-predator interaction following the Lotka-Volterra model is studied. The mathematical validation is provided by proofing that all solutions of the model are always exist, non-negative, and bounded. Obeying Matignon condition, Lyapunov function, and generalized LaSalle invariance principle, the local and global stability are investigated. To complete the analytical results, some numerical simulations are given to show the occurrence of forward bifurcation and the impact of the memory index. All results state that three possible circumstances may occur namely the extinction of both populations, the prey-only population, and the co-existence of both populations.
UNRAVELING THE IMPACT OF THE MEMORY, THE COMPETITION, AND THE LINEAR HARVESTING ON A LOTKA-VOLTERRA MODEL PANIGORO, HASAN S.; RAHMI, EMLI; SAVITRI, DIAN; BEAY, LAZARUS KALVEIN
Jurnal Matematika UNAND Vol. 13 No. 4 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.4.257-269.2024

Abstract

The harvesting of population has a dominant influence in balancing the ecosystem. In this manuscript, the impact of harvesting in addition to competition, and memory effect on a prey-predator interaction following the Lotka-Volterra model is studied. The mathematical validation is provided by proofing that all solutions of the model are always exist, non-negative, and bounded. Obeying Matignon condition, Lyapunov function, and generalized LaSalle invariance principle, the local and global stability are investigated. To complete the analytical results, some numerical simulations are given to show the occurrence of forward bifurcation and the impact of the memory index. All results state that three possible circumstances may occur namely the extinction of both populations, the prey-only population, and the co-existence of both populations.
Determinants of Earnings Management in Public Manufacturing Firms During Covid-19 Savitri, Dian; Rochmatullah, Mahameru Rosy
Jurnal EMT KITA Vol 9 No 2 (2025): APRIL 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET) - Lembaga KITA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/emt.v9i2.4006

Abstract

This study aims to analyze the determinants of Earnings Management Implementation in Go Public Manufacturing Companies during the Covid-19 Pandemic. This research method is quantitative. The population in this study used manufacturing companies going public in the food and beverage sub-sector listed on the Indonesia Stock Exchange in the 2019-2022 period. The technique used in this research is purposive sampling. The analysis method that can be applied to this research is the multiple regression analysis method. The results of this study show that company size affects earnings management. Managerial ownership does not affect earnings management. Leverage does not affect earnings management. Profitability has no impact on earnings management. Financial performance does not affect earnings management. This research could provide insights for companies to consider various factors in managing their financial statements, ensuring that they remain transparent and trustworthy to stakeholders, especially in challenging times such as the COVID-19 pandemic.
DYNAMICAL BEHAVIOR IN THE COMPETITIVE MODEL INCORPORATING THE FEAR EFFECT OF PREY DUE TO ALLELOPATHY WITH SHARED BIOTIC RESOURCES Dewi, Mifta Kharisma; Savitri, Dian; Abadi, Abadi
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 4 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss4pp2663-2674

Abstract

This research develops a mathematical model of a natural phenomenon, namely sea snails that can release toxins (allelopathy) so that non-toxic sea snails become afraid. In addition, toxic and non-toxic sea snails share biotic resources. Based on the existing phenomenon, the model of fear effect caused by allelopathy in the competitive interaction model with shared biotic resources will be studied. In this system, three equilibrium points are obtained: extinction point of prey, extinction point of predator, and coexisting point under certain conditions. Analysis of local stability at equilibrium points by linearization shows that all equilibrium points are asymptotically stable with certain conditions. Numerical simulations at the equilibrium point show the same results as the analysis results. Then, numerical continuity was carried out by selecting variation of the fear effect parameter for Numerical continuity results show that changes in these parameters affect the population of toxic and non-toxic species, marked by the emergence of Transcritical bifurcations, Bifurcation occurs at the first Saddle-Node bifurcation at and the second Saddle-Node bifurcation at
Pendampingan Penyelesaian Soal Olimpiade Matematika bagi Siswa SMA Bayt Al Hikmah Pasuruan Manuharawati, Manuharawati; Rahadjeng, Budi; Jakfar, Muhammad; Savitri, Dian; Phibeta, Toni; Faradilla, Anisa'; Hamzah, Ahmad Taufik; Thoriq, Abil Alfath
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 16, No 3 (2025): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v16i3.23921

Abstract

Kemampuan pemecahan masalah merupakan salah satu kompetensi utama dalam pembelajaran matematika yang ditekankan dalam Kurikulum 2013. Di luar pembelajaran intrakurikuler, partisipasi dalam kegiatan Olimpiade Matematika dapat menjadi wahana strategis dalam mengembangkan daya nalar, kreativitas, dan kemampuan berpikir kritis siswa. Namun, di SMA Pondok Pesantren Bayt Al-Hikmah Kota Pasuruan, capaian prestasi dalam ajang tersebut masih terbatas, antara lain disebabkan oleh kurangnya intensitas pembinaan, keterbatasan sumber daya guru pembina, serta belum optimalnya strategi pelatihan. Sebagai respons terhadap kondisi tersebut, tim Pengabdian kepada Masyarakat dari Program Studi Matematika FMIPA Unesa melaksanakan kegiatan pendampingan penyelesaian soal olimpiade matematika bagi siswa SMA di pondok pesantren tersebut. Kegiatan dilaksanakan secara luring pada tanggal 13 Juli 2025 dan melibatkan 18 peserta, dengan pendekatan berbasis pemecahan masalah menurut Polya. Rangkaian kegiatan mencakup survei kemampuan awal, pendampingan materi, workshop penyelesaian soal, survei kemampuan akhir, serta evaluasi kepuasan peserta. Hasil evaluasi menunjukkan bahwa 83,33% peserta mengalami peningkatan skor setelah mengikuti pendampingan. Kegiatan ini terbukti efektif dalam meningkatkan pemahaman dan keterampilan siswa dalam menyelesaikan soal-soal olimpiade matematika, khususnya pada topik sistem persamaan linear, pembagian waris, dan kombinatorik.
Dynamic Analysis of a Prey Predator Model with Holling-Type III Functional Response and Anti-Predator Behavior Umaroh, Siti Zulfaniah; Savitri, Dian
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.
Co-Authors ABADI Akmal Ali, Muhamad Restu Alya, Aiza Andreani, Phobe APRILIA, VERNANDA Beay, Lazarus Kalvein BUDI RAHADJENG Danu Erlangga, Muhammad Dewi, Mifta Kharisma Dina Kartika Maharani DINA KARTIKA MAHARANI Dini Kinati Fardah Dino, Awan Eghary, Nabila Kholifatul Yuniar Faradilla, Anisa' Fitri, Davina Alma Gastriani, Ovi Prina Hamzah, Ahmad Taufik Hasan S. Panigoro Hidajati, Ninik Wahju I Made Kardana Isaloka, Ilo Jakfar, Muhammad Khofifah, Rike Farikha Kusumawati Dwiningsih Lydia Rohmawati Mahameru Rosy Rochmatullah Manuharawati Ni Putu Siadi Purniti Ninuk Lustyantie Phibeta, Toni Prawoto, Budi P. Putri, Laras Kinanti RADEN SULAIMAN Rahmi, Emli Ratna Salsabila, An Nisa Salsabillah, Atiyah Safitri Sri Harini Ekowati Sri Mulyani Subur Ismail, Subur Thoriq, Abil Alfath Umaroh, Siti Zulfaniah Wiediartini Wiediartini