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All Journal JURNAL EKSAKTA PENDIDIKAN (JEP) Jurnal Cendekia : Jurnal Pendidikan Matematika Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran Journal of Mathematics UNP Rangkiang Mathematics Journal JURNAL MUARA PENDIDIKAN

Dewi Murni

Universitas Negeri Padang

Author-ID : 2756747

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

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Pemanfaatan Smartphone dalam Pembelajaran Matematika : Bagaimana Persepsi Mahasiswa? Dewi Murni; Jamaris Jamna; Solfema Solfema; Rhomiy Handican
Jurnal Cendekia : Jurnal Pendidikan Matematika Vol 7 No 1: Jurnal Cendekia: Jurnal Pendidikan Matematika Volume 7 Nomor 1 Tahun 2023
Publisher : Mathematics Education Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cendekia.v7i1.2153

Smartphone adalah telepon pintar yang mempunyai fitur-fitur canggih dengan kemampuan tinggi serupa komputer. Smartphone dimiliki oleh semua mahasiswa di departemen matematika FMIPA Universitas Negeri Padang. Penggunaan smartphone yang baik akan membantu mahasiswa dalam perkuliahan dan sebaliknya penggunaan yang tidak baik akan membawa dampak negatif kepada mahasiswa. Tujuan penulisan artikel ini untuk mengetahui bagaimana persepsi mahasiswa Departemen Matematika FMIPA Universitas Negeri Padang terhadap pemanfaatan Smartphone dalam perkuliahan. Penelitian ini adalah penelitian kuantitaif dengan analisis data deskriptif dengan metode survei. Angket persepsi mahasiswa digunakan sebagai instrumen pengumpulan data persepsi mahasiswa departemen matematika yang mengambil mata kuliah Statistika Matematika pada semester Januari-Juni 2022. Hasil penelitian adalah 52% mahasiswa mempunyai persepsi yang baik ,31% sangat baik dan 16,3% tidak baik terhadap pemanfaatan (dampak positif) smartphone dalam menunjang perkuliahan sedangkan untuk persepsi mahasiswa terhadap dampak negatif smartphone terhadap perkuliahan adalah 41,64% setuju dan 9,42% sangat setuju dan yang tidak setuju dan sangat tidak setuju sebanyak 48,94%. Dengan baiknya persepsi penggunaan smartphone dikelas diharapkan mampu memberikan alternatif alat pembelajaran yang menunjang proses peningkatan prestasi belajar mahasiswa.

Penentuan Cadangan Premi pada Asuransi Jiwa Berjangka Status Joint Life Menggunakan Metode Canadian Fira Septiyani Ibrahim; Dewi Murni
Journal of Mathematics UNP Vol 7, No 1 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

The Premium reserves is an obligation that must be owned by a life insurance company to provide compensation to the heirs in the event of a claim. The purpose in this research is to formulate a premium reserves formulation for term life insurance with joint life status. This research is a theoretical study that examines the calculation of the joint life status term life insurance premium reserves using the Canadian method which the 2019 Indonesian Mortality Table (TMI) and examples of case applications. The calculation of reserves begins by forming a joint mortality and commutation table for two insured persons, forming a formula for combined life annuity, single net premium, and annual net premium. Thus, in this study, the formulation of joint life insurance premium reserves using the Canadian method is obtained.

Model Matematika Penyebaran Penyakit Tungro pada Tanaman Padi dengan Vektor Wereng Hijau Nephotettix virescens Dwi Shinta Kumala Ningsih; Dewi Murni
Journal of Mathematics UNP Vol 6, No 4 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Tungro is a disease of rice plants caused by Rice Tungro Spherical Virus (RTSV) and Rice Tungro Bacilliform Virus (RTBV). The green leafhopper Nephotettix virescens is a vector of this disease. The purpose of this study was to determine the form of a mathematical model of the spread of tungro disease by using predators to control its spread and interpret the results of the analysis. The form of the mathematical model is SEI-SIP. This research is a basic or theoretical research. The results of model analysis obtained two fixed points free of disease and two fixed points endemic to spread of tungro. The stability analysis resulted in R_0 which interpreted that the high rate of disease transmission, vector suction power and the transition rate from exposed to infected would result in an outbreak of disease, low predator mortality and high predation rates would reduce the spread of tungro

Pembentukan Portofolio Optimal pada Saham Jakarta Islamic Index Menggunakan Model Indeks Ganda Ulfa Zuliantika; Dewi Murni
Journal of Mathematics UNP Vol 7, No 1 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Investment is a process of placing a number of funds at this time in the hope of making a profit in the future. But, the higher the expected return the higher the risk. To minimize the risk, investors can form optimal portfolio.The purpose of this research is to determine the composition and proportion of stocks that form the optimal portfolio and determine return and risk of optimal portfolio. The type is this research is applied research using secondary data. The data are stocks of Jakarta Islamic Index period August – November 2020. Index in this research is IHSG, DJIA and HSI. The method used is Multi Index Model. The result of this research is obtained composition 2 stocks to be made as the optimal portfolio, this is JPFA 59.3044% and SMGR 40.6956% with a value of expected return portfolio is 4.505013% and risk of portfolio is 2.028694%.

Analisis Perencanaan Produksi Padi Terhadap Lahan Panen Di Sumatera Barat Menggunakan Rantai Markov Waktu Diskrit Irfan Syauqi; Dewi Murni
Journal of Mathematics UNP Vol 7, No 2 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Rice production is one of the results of farming which is carried out by planting rice seeds, care and maintenance and regular fertilization. While the harvest land is a plant that is harvested after the plant is old enough. Harvested land affects rice production, if the harvested area is decrease then rice production will also decrease. For this reason, it is necessary to predict rice production and harvested land in the province of West Sumatra using a discrete time Markov chain. This research aims to determine the shape of the Markov chain model and the prediction results of rice production and harvested land in the province of West Sumatra for the period January 2021 to December 2021. The results showed that the opportunities for rice production in a row were drastically decreased, decreased, increased and drastically increased by 23,28%, 17,46%, 35,46% and 23,80%. Meanwhile, the opportunities of harvesting land in a row were that drastically decreased, decreased, increased and drastically increased by 23,47%, 16,90%, 38,50% dan 21,13%.

Analisis Cluster Hierarki Metode Single Linkage Pada Kabupaten/Kota di Provinsi Sumatera Barat Berdasarkan Indikator Kesehatan Diah Rahmahadi Thamrin; Dewi Murni
Journal of Mathematics UNP Vol 7, No 3 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Health indicators are variables that are needed to estimate the conditions and changes faced by an area in the health sector. Health indicators are needed by the government to plan development in the health sector inaorderitoaachieve optimal resultsiin accordance with the conditions of each region. This study aims to group districts/cities in West Sumatra Provinceabasedion health indicators in 2020 and interpret the characteristics of each cluster that has been formed by using a single linkage method of hierarchical cluster analysis. The results of the grouping are dividedainto five clusters, the first cluster consists of the Mentawai Islands Regency. The second cluster consists of 12 regencies/cities namely Pesisir Selatan Regency, Padang Pariaman Regency, West Pasaman Regency, Agam Regency, Pasaman Regency, Dharmasraya Regency, South Solok Regency, Sawahlunto City, Bukittinggi City, Payakumbuh City, Solok City and Padang Panjang City. The third cluster consists of 4 regencies, namely Solok Regency, Tanah Datar Regency, Fifty Kota Regency and Sijunjung Regency. The fourth cluster consists of Kota Pariaman. The fifth cluster consists of the City of Padang.

Metode Partial Least Square (PLS) untuk Menganalisis Kepuasan Pengunjung Terhadap Pelayanan Kantor Camat Koto Tangah Kota Padang Nadia Liaf Putri; Dewi Murni
Journal of Mathematics UNP Vol 6, No 4 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Partial Least Square (PLS) method is methods used to analyze visitor satisfaction. Analysis of visitor satisfaction is useful for an agency in an effort to improve the quality of services provided. The purpose of this study was to determine the form of the PLS model in analyzing visitor satisfaction with the services of the Koto Tangah sub-district office and to determine the effect of service quality on visitor satisfaction. The variable used is the visitor satisfaction variable is namely tangibles, reliability, responsiveness, assurance, and empathy. The steps of data analysis carried out were designing a structural relationship model, making measurement models, evaluating structural models and testing hypotheses. Based on the analysis that has been done, it shows that the service quality variable has a positive and significant influence on visitor satisfaction. In the PLS method, the structural equation is obtained, Satisfaction = 0.087 Tangibles + 0.103 Reliability + 0.371 Responsivess + 0.052 Assurance + 0.445 Empathy + ε.

Metode Cutting Plane dan Analisis Sensitivitas pada Optimasi Keuntungan Penjualan Usaha Kue Putu Asli M*R Moni Sarisa; Dewi Murni
Journal of Mathematics UNP Vol 7, No 3 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

The M*R Original Putu Cake business is located in Balingka village, IV Koto District, Agam Regency, West Sumatra. This business produces three types of putu cakes, namely white baked putu, black baked putu, and steamed putu. The purpose of this study is to determine the optimal amount of production using the cutting plane method and to determine the range of changes that can be made to the production factors using sensitivity analysis. The result gives, the optimal production quantities of white baked putu, black baked putu, and steamed putu are 9.998 packs, 4.835 packs, and 3.000 packs, respectively. Meanwhile, through sensitivity analysis, it is concluded that changes in production factors will not affect the optimal solution as long as it is within the range of the maximum upper limit and minimum lower limit according to the calculated output.

Pembentukan Portofolio Optimal Model Markowitz Menggunakan Metode Sharpe (Studi Kasus Pada Saham Jakarta Islamic Index) Fiona Melta; Dewi Murni
Journal of Mathematics UNP Vol 6, No 3 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Investment is the activity of placing funds or money with the aim of making a profit. In addition to profits, investments also have risks that can be minimized by forming an optimal portfolio using the Markowitz Model. The purpose of this study is to determine the combination and weight of funds from each stock that makes up the optimal portfolio and to determine the optimal expected return and risk of the Markowitz model based on the Sharpe Ratio. This study uses stock data of the Jakarta Islamic Index during the period August –November 2020. The results of the analysis of 30 stocks of the Jakarta Islamic Index obtained 5 stocks forming an optimal portfolio with fund weights for each share, namely CTRA 5.32%, INCO 40.78%, SCMA 2.97%, SMGR 0.23%. , and TPIA 50.7% with expected return, portfolio risk and maximum sharpe ratio of 0.3760021%, 0.010933%, and 0.359600991, respectively.

Analisis Model Matematika Pengaruh Feline Immunodeficiency Virus pada Sistem Imun Kucing Fanesa Larasati; Dewi Murni
Journal of Mathematics UNP Vol 8, No 1 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i1.13046

FIV is a virus that attacks the cat's immunity and causes AIDS-like in cats. FIV utilizes immune cells as receptors for initial attachment, then will form DNA that enters the cell nucleus and interacts with immune cell DNA. The results of this DNA replication form a new virus that will continue to multiply in the cell membrane. The purpose of this research is to form a mathematical model that examines how the dynamics of the FIV virus moves and its effect on the cat's immune system. By analyzing the model, two fixed points are obtained, namely the fixed point and the fixed point for FIV disease in immune cells, where at that point the characteristics of the virus can be known. The results of the fixed point stability test using the eigenvalue and Routh Hurwitz criteria that have been carried out show that the number of immune cells slowly decreases due to the level of FIV virus replication in immune cells that are already infected and have immune disorders.

Co-Authors Abdullah Husein Ardi Ardi Armiati Armiati Artina Puspita Avea Kristerima Gulo Bayu Kurnia Putra Deska Warita Diah Rahmahadi Thamrin Diego Armando Piero Diego Armando Piero Dwi Shinta Kumala Ningsih Elfiani Sarian Bur Envi Sari Oktaviani Fanesa Larasati Fariz Rivalno Fatimah Putri Johari Fauziah Hervi Fiona Melta Fira Septiyani Ibrahim Helma Helma Helma Helma Helma Helma Hendra Syarifuddin Ihsan Kamil Irfan Syauqi Jamaris Jamaris Julian Heru Saputra Khairul Alim Liska Andani Liska Andani Mamad Hardiyanto Media Rosha Meira Parma Dewi Mirna Mirna Moni Sarisa Mudjiran Mudjiran Mudjiran Mudjiran Muhammad Danil Muhammad Subhan Nada Atifah Nadia Liaf Putri Nilam Purnama Sari Nurhizrah Gistituati Putji Alfayulanda Rahmatika Rahmatika Rara Sandhy Winanda Rhomiy Handican Rimpi Oktaria Riry Sriningsih Robi Kurniawan Rohadatul Aysi Rusdinal Rusdinal Sarah Hardiana sari maryani setia ningsih m Shinta Sari Shintia Pratiwi Solfema Solly Aryza Suherman Suherman Ulfa Zuliantika ulfah hanum Wanari Intan Dwi Putri Yeni Feriza Yenni Kurniawati Yerizon Yerizon Yerizon Yerizon

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