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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI Zero : Jurnal Sains, Matematika, dan Terapan Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Jurnal Pengabdian Masyarakat
Rina Filia Sari
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Education Library & Information Science Mathematics Physics Social Sciences Other

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Survival Analysis of Covid-19 Patients Based on Time of Recovery Rina Widyasari; Muhammad Chairul Imam; Ramya Rachmawati; Rina Filia Sari
Jurnal Matematika, Statistika dan Komputasi Vol. 18 No. 3 (2022): MAY, 2022
Publisher : Department of Mathematics, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/j.v18i3.18338

Abstract

Corona virus is a virus that can cause the respiratory tract to become infected, and this viral infection is called COVID-19. This virus spreads so fast that it has spread to several countries, including Indonesia. In Indonesia, COVID-19 was detected in early March, precisely on March 2, 2020. The uncertain increase in the number of COVID-19 patients will have an impact on society and the country. This condition is compounded by the high number of deaths due to the COVID-19 virus. Therefore, this study was conducted to analyze survival based on the healing rate of COVID-19 patients, in order to obtain information about the time period and the factors that cause a person with COVID-19 to survive. The method used in the survival analysis is the Kaplan-Meier test as a counter to the estimated recovery time of COVID-19 patients and the Log-Rank test to test for differences in the survival function of the recovery time of COVID-19 patients in the two groups. Kaplan-Meier and Log-Rank tests are part of the non-parametric method which is a statistical test that does not require any assumptions about the distribution of population data. The data used is data on COVID-19 patients at the Malahayati Hospital from January to May 31, 2021. The conclusion obtained is the survival function curve / length of time on the recovery rate of COVID-19 patients based on gender, age, and positive and suspected COVID-19 patients. with and without comorbidities. However, based on the Log-Rank test with = 0.05, it was concluded that there was no significant difference in the length of time for recovery of COVID-19 patients based on gender, age and positive patients and patients with suspected COVID-19 with comorbid and without comorbidities.
IMPLEMENTATION OF PAGERANK ALGORITHM IN MATLAB Rima Aprilia; Rina Filia Sari
ZERO: Jurnal Sains, Matematika dan Terapan Vol 1, No 1 (2017): January - June
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.845 KB) | DOI: 10.30829/zero.v1i1.1458

Abstract

Implementation of the PageRank algorithm to rank web generally only contain static and dynamic pages, with the rapid url users then needed an algorithm for calculating web rankings. In determining the ranking of a web, links incoming and outgoing links are also random surfer model is one decisive factor in determining the ranking of a web. Implementation of PageRank on MATLAB formed on a program in the m-file.
Optimisasi Perencanaan Produksi Menggunakan Metode De Novo Programming Dan Pendekatan Minimum-Maximum (Min-Max) Goal Programming Nurmalinda Utami Siregar; Rina Filia Sari; Rima Aprilia
SAINTIFIK Vol 10 No 2 (2024): Saintifik: Jurnal Matematika, Sains, dan Pembelajarannya
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v10i2.498

Abstract

Penelitian ini bertujuan untuk menghasilkan jumlah keuntungan dan kapasitas produksi yang maksimal berdasarkan pada 3 jenis produk yaitu paving block segi empat, paving block segi enam, dan paving block segi delapan. Metode yang digunakan yaitu model de novo programming dan pendekatan minimum-maximum (min-max) goal programming. Untuk membentuk model de novo programming dilakukan dengan menentukan jumlah variabel keputusan, fungsi tujuan, dan fungsi kendala, selanjutnya dilakukan pemodelan min-max de novo programming pada keuntungan dan kapasitas produksi agar mendapatkan solusi optimal maksimum dan minimum pada tiap fungsi tujuan dan langkah terakhir dilakukan perhitungan menggunakan model goal programming. Berdasarkan hasil olah data menggunakan software LINGO, diperoleh nilai d = 0 artinya keuntungan dan kapasitas produksi maksimal dengan jumlah poduksi paving block segi empat sebanyak 54.060 pcs, paving block segi enam sebanyak 52.700, dan paving block segi delapan sebanyak 49.620 pcs dengan keuntungan maksimum yang diperoleh sebesar Rp. 86.936.320.
Analisis Penjualan Produk Dengan Metode Winter Eksponensial Smoothing Dan Even Based Tri Kartika Chaniago; Rina Filia Sari; Ismail Husein
SAINTIFIK Vol 10 No 2 (2024): Saintifik: Jurnal Matematika, Sains, dan Pembelajarannya
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v10i2.499

Abstract

Penelitian ini membahas tentang peramalan penjualan produk. Peramalan penjualan digunakan untuk mengatur perencanaan operasional produksi dan distribusi yang berhubungan dengan biaya yang harus dikeluarkan dalam memproduksi suatu produk. Untuk melakukan peramalan digunakan metode Winter eksponensial smoothing dan event based. Berdasarkan penerapan dari kedua metode tersebut ditemukan bahwa nilai peramalan terhadap 4 varian produk yaitu produk A dengan tingkat akurasi 0,18%, produk B dengan tingkat akurasi 0,9%, produk C dengan tingkat akurasi 0,5 %, dan produk D dengan tingkat akurasi 0,75% yang dihasilkan dari penerapan Winter eksponensial smoothing, sehingga metode Winter eksponensial smoothing lebih baik diterapkan pada penjualan produk di PT. Z untuk menganalisis system penjualan produk.
Implementasi Metode NWC (North West Corner) Untuk Menentukan Alokasi Waktu Optimal Dalam Penggunaan Aplikasi DJP (Direktorat Jenderal Pajak) Online Taslima Dewi; Hanifa Mardiatun Nasution; Nur Manda Sari; Rina Filia Sari; Elis Citra Purnama Purba; Shopia
Jurnal Pengabdian Masyarakat Vol. 2 No. 1 (2023): Juni 2023
Publisher : Unity Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70340/japamas.v2i1.34

Abstract

Practical Work (KP) is a direct job training program that is implemented from higher education institutions to students in the work environment, which aims to improve skills and provide experience to students. The problem that occurs at the KP is the lack of BKKBN employees in managing time to upload data in the DJP online application. Therefore, the practitioner tries to use the NWC (North West Corner) method to optimize the time for uploading data in the DJP online application. By using the NWC (North West Corner) method, the optimal time allocation needed for BKKBN employees to upload data in the DJP online application is to make it more efficient, namely 3.72 hours/day.
Co-Authors Elis Citra Purnama Purba Hanifa Mardiatun Nasution Ismail Husein, Ismail Muhammad Chairul Imam Nur Manda Sari Nurmalinda Utami Siregar Ramya Rachmawati Rima Aprilia Rina Widyasari Shopia Taslima Dewi Tri Kartika Chaniago