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All Journal Statistika JURNAL PENDIDIKAN TAMBUSAI Pelita Eksakta MATHunesa: Jurnal Ilmiah Matematika Journal of Mathematics UNP

Media Rosha

Unknown Affiliation

Author-ID : 364279

Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Mathematics Physics Social Sciences Other

Published : 31 Documents Claim Missing Document

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Training of Making Creative Students’ Worksheet Based on Ethnomatematics by Using Edmodo App for Mathematics Teachers of MGMP of Junior High School in Payakumbuh City Elita Zusti Jamaan; Ali Asmar; Arnellis Arnellis; Nonong Amalita; Media Rosha
Pelita Eksakta Vol 4 No 2 (2021): Pelita Eksakta Vol. 4 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol4-iss2/151

The purpose of this study is to determine the creativity of teachers in designing ethnomathematical-based student worksheets through LMS - Edmodo at MGMP SMP Payakumbuh. Ethnomathematics based student activity sheet (LKS) is based on the local culture of Payakumbuh. This Ethnomathematics-based LKS is expected to be the initial foundation for teacher creativity to design and develop Ethnomathematics-based LKS in accordance with Payakumbuh City. The method used in the service is in the form of online and offline workshops. The target audience for this community service is the mathematics teacher in the Payakumbuh Mathematics Junior High School Subject Teacher Consultation. This training stage begins online with a zoom meeting, giving questionnaires, carrying out tests, then followed by making Ethnomathematics-based LKS with the Edmodo platform. The results of the implementation show that the creativity of teachers in designing Ethnomathematics-based worksheets using the Edmodo platform is good, with the percentage of achievement of 79% and the creative achievement of teachers in participating in this activity is 78%.

Training of Mathematics Olympiad Contents by Using Edmodo App for Mathematics Teachers of MGMP of Junior High School in Bukittinggi City Arnellis Arnellis; Nonong Amalita; Elita Zusti Jamaan; Media Rosha; Saddam al Aziz
Pelita Eksakta Vol 4 No 2 (2021): Pelita Eksakta Vol. 4 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol4-iss2/150

The purpose of this study is to improve the ability of mathematics olympiad coaches through the edmodo platform, and to find out the satisfaction of Bukittinggi junior high school mathematics teachers in fostering mathematics olympiads with the edmodo application. The target audience for the service is mathematics teachers in the Subject Teachers' Consultation (MGMP) at Bukittiggi Junior High School Mathematics. This training stage begins online with workshops from home, giving out questionnaires, administering tests, then followed by giving Edmodo platform skills, strengthening math olympiad training materials, and offline discussion sessions in the Edmodo class. The results of the training implementation showed that the mastery of Mathematics teachers in junior high schools in Bukittinggi City on the Olympic material through the tests given on the Edmodo platform was 76%, meaning that teachers who participated in this activity were able to conduct mathematics Olympiad coaching with the Edmodo application. While the results of the participant satisfaction questionnaire were 81.27% participants had good satisfaction with the training activities carried out.

Workshop on High Order Thinking Skills Mathematical Problems to Increase Teachers Teaching Abilities Defri Ahmad; Syafriandi Syafriandi; Media Rosha
Pelita Eksakta Vol 3 No 1 (2020): Pelita Eksakta Vol. 3 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol3-iss1/110

Abstract – To accomodate High Order Thinking Skills (HOTS) in classrom, we need to consider curricula, learning process, and assesment. Learning process and assesment have an essential requirement i.e. teacher’s ability. Government has done some activity to increase teacher’s ability to apply HOTS in classrom, but teachers need more. To keep their motivation and ability, teachers need a continue activity related to HOTS. Lecturer is an academic expert who teach in university level. In Indonesia, service to community is one of obligation for lecturer. Hence increasing teachers understanding about HOTS is one of lecturer’s duty. Training and workshops has been designed to rose teachers ability in creating HOTS problems and teaching using those problems. In this activity, teachers are studied about HOTS concept, the government policy about HOTS, solve some HOTS problem in National level test, and how to create HOTS base mathematical problems. For the next activity, teachers are asked to create some HOTS base mathematical problems, and design a learning trajectoty/ design to put their HOTS problem in learning process. Lastly, base on teacher’s satisfaction questionnaire, teachers are very happy to get this activity for the activity’s programme, mastery of topics, and teacher ‘s needs.

SUB σ-FIELD YANG DIBANGUN OLEH STATISTIK Media Rosha; Mailizar Mailizar
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 3, No 1 (2003)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v3i1.537

Pengkonstruksian sub σ-field dari suatu statistik memberikan peran penting dalam mempelajari statistik tersebut. Olehkarena itu tulisan ini menyajikan sub σ-field Sf yang dibangun oleh statistik f. Pembahasan sampai pada statistik f dan g serta subσ-field Sr dan Sg yang saling berkontraksi.

Model Matematika Kerusakan Sumber Daya Hutan di Indonesia Nur Suci; Arnellis Arnellis; Media Rosha
Journal of Mathematics UNP Vol 2, No 1 (2014): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract – The Degradation of forestry resources is a serious problem is faced by Indonesian country. The growth of population people and augment industrialization in Indonesia gave a negative effect to forestry resources. Its happen if the utilization continuously without preservation. The purpose of this study is to see the dynamic degradation of forestry resources that can be done by modeling the influence population growth and augment industrialization to forestry resources in the form of a mathematical model. The form of mathematical models equations a non-linear differential equations system. Furthermore Mathematical model that we get be analysised and the result is interprestationed to answer the problem. According the analysis of mathematical model dynamics degradation of forestry resources in Indonesia is gotten by two types of fixed point; fixed point interference free ( ) and fixed point interference ( and ), and then we get obtained the stability of each fixed. Keywords – Degradation of Forestry, Industrialization, Mathematical Models, Population People Stability.

Model Matematika Jumlah Pemakai Narkoba dengan Program Rehabilitasi Eli Yuliza; Media Rosha; Riry Sriningsih
Journal of Mathematics UNP Vol 2, No 1 (2014): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract–In the number of drug users in Indonesia each year has increased very significantly, so this problem should be addressed immediately.Currently, the government has organized rehabilitation program that is expected to reduce the number of drug users in the future. To predict the number of drug users, can be done by creating a mathematical model of the number of drug users. Mathematical model number of drug users in rehabilitation programs dividing the population into four groups of individuals: the group of susceptible individuals for drug use, drug user groups of individuals, groups of individuals are rehabilitated, and a group of individuals who have stopped using drugs. Mathematical model that formed were analyzed by looking at the stability, the analysis of mathematical models obtained two types of fixed points. In the number of drug users is affected by four parameters: the level of interaction between individuals prone to drug use by individual drug users, the level of individual drug users to be individuals who stop using drugs, and individual level drug offenders to be rehabilitated individuals. Keywords–Drugs, mathematical model, fixed point.

Model Matematika Rantai Makanan Tiga Spesies Yongki Sukma; Media Rosha; Arnellis Arnellis
Journal of Mathematics UNP Vol 2, No 1 (2014): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract –– Predation interaction between two species have been described in Lotka-Volterra mathematical model. But in an ecosystem, predation interaction involving more than two species. In this study will be discussed predation interaction involving three species in a food chain. Obtained mathematical model will be analyzed by finding the stability of fixed point, the stability of fixed point will be analyzed with Routh-Hurwitz criterion. The model consists of three differential equations representing each species. The model has four fixed points, the fourth fixed point is stable, the first fixed point is not stable but the third and second fixed point are stable with certain conditions. The result of analisys show that three populations does not become extinct if product of species I growth rate with spesies III growth rate is greater than product of species I death rate with species III death rate. Keywords –– Food Chain, Fixed Point, Routh-Hurwitz

Model Matematika Penyebaran Penyakit Infeksi Saluran Pernapasan Akut (ISPA) Berdasarkan Lokasi Anatomi Akibat Bakteri Streptococcus Pneumoniae Diana Leris; Media Rosha
Journal of Mathematics UNP Vol 8, No 2 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i2.14330

Streptococcus pneumoniae is a bacterium that attacks the human respiratory tract. Streptococcus pneumoniae bacteria cause respiratory diseases in the form of pneumonia, otitis media, sinusitis, sepsis, peritonitis, and abscesses. The purpose of this study was to establish, analyze, and interpret the mathematical model of the spread of Acute Respiratory Infections (ARI) based on the anatomical location of the Streptococcus pneumoniae bacteria. In the mathematical population formation model, the human population is divided into six population groups: susceptible, exposes, sinusitis infections, otitis media infections, pneumonia infections, and recovered. An analysis of the stability of the system around the equilibrium point produces two points, namely, disease-free points, which will be asymptotically stable if βπ<μ(μ+ε+ρ). While the endemic point of the desease will be asymptotically stable if βπ-μ(μ+ε+ρ>0.

Analisis Faktor Pada Faktor-Faktor Yang Mempengaruhi Stres Guru SD Selama Sistem Pembelajaran Daring Era Covid-19 (Studi Kasus di SD Kecamatan Padang Timur) Fadilah, Dinda; Rosha, Media
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13990

Stress is one of the effects that arise due to the covid-19 pandemic, one of which is experienced by teachers at the elementary school level. This can happen because at the elementary school level, if it is seen from students who are only 7-12 years old, who are still ordinary in terms of using technology, elementary school teachers feel more difficult to carry out online learning process. The purpose of this study is to find out what factors significantly affect the stress of elementary school teachers in the subdistrict of Padang Timur during the online learning system in the covid-19 era. This type of study was an applied study with the spread of the questionnaire among 88 respondents selected using the random sampling cluster method. The results of the study were obtained by seven factors that influenced the stress of elementary school teachers in the subdistrict of Padang Timur during the covid-19 online learning system including educational factors, learning implementation factors, teacher's information technology skills factors, learning process and assessment factors, family factors, the low motivation for students' learning and media factors for online learning.

Optimasi Lampu Lalu Lintas Simpang Tabuik Kota Pariaman Menggunakan Graf Fuzzy Berbasis FIS Tipe Mamdani Cahyani, Alda Wahyu Regita; Rosha, Media
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15001

Poor traffic light regulation is one of the causes of congestion. One of the factors contributing to congestion is inadequate traffic light control, especially at the Tabuik Kota Pariaman intersection. Fuzzy graph is a part of mathematical science that combines graph theory with fuzzy logic. Fuzzy graphs can be used as a method to solve congestion problems related to traffic light durations. This research aims to determine the duration of green light based on queue length. The data collected includes primary data on traffic duration, road width, and the number of vehicles passing through each leg of the intersection. The research results show that by using a fuzzy graph based on the Mamdani fuzzy inference system, the overall average at the Tabuik intersection, the total duration of green light obtained is 80 seconds, which is a decrease of 8.75% from the initial condition, while the total duration of red light obtained is 404 seconds, which is an increase of 1.76% from the initial condition.

Co-Authors Ade Silvia, Ade Aisyah Ali Asmar Annisa Altas Arnellis Arnellis Arsiyandi, Ashraff Astuti, Shindy Widya Azhura, Kirana Cahyani, Alda Wahyu Regita Defri Ahmad Diana Leris Diantami, Melati Dramutia, Alfika Eli Yuliza Elita Zusti Jamaan Fadilah, Dinda Mailizar Mailizar Maulani, Fiqrah Nonong Amalita Nur Suci Oktavia, Nanda Putra, Kevin Pramana Putri, Anisa Dianda Rahma Dhiyatri, Suci raudatul jannah Riry Sriningsih Risman, Junero Saddam Al Aziz Saputra, Yogi Trio Sari, Engla Diva Syafriandi Syafriandi Tri Hafsari, Trisa Wulandari, Azizah Yongki Sukma Zulfia, Zulfia

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