Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 641-660 of 11355
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Penerapan Fuzzy Time Series Markov Chain dalam Meramalkan Nilai Tukar Rupiah terhadap Yuan, Dollar Amerika dan Dollar Singapura
(Universitas Sumatera Utara, 2024)Forecasting currency exchange rates is an important aspect of economic analysis as exchange rate fluctuations can affect various sectors of a country's economy, including international trade, investment, and monetary policy. ... -
Analisis Perbandingan Fuzzy Inference System Metode Mamdani dan Sugeno dalam Optimisasi Produksi Barang
(Universitas Sumatera Utara, 2024)The demand and supply in the production sector do not exhibit a clear data trend, making them uncertain. Optimizing the production quantity is one solution to prevent losses. The Mamdani and Sugeno methods are approaches ... -
Metode Minimum Volume Ellipsoid (MVE) dan Minimum Covariance Determinant (MCD) dalam Mengestimasi Matriks Kovarian pada Data Multivariat
(Universitas Sumatera Utara, 2024)Minimum Volume Ellipsoid (MVE) and Minimum Covariance Determinant (MCD) are robust methods used to handle the outlier problem. Outliers are points that appear to deviate significantly from other data sample points that ... -
Metode Material Requirement Planning (MRP) dalam Perencanaan Produksi Sirup Markisa Dewi
(Universitas Sumatera Utara, 2024)Production planning is very important in a company. In this research the author used the Holt Winter Multiplicative Method which aims to predict the demand for passion fruit syrup in 2024 and the Silver Meal Algorithm ... -
Model Dinamik Tipe Seir pada Penyebaran Penyakit Herpes Genital
(Universitas Sumatera Utara, 2024)Herpes infection is divided into two types, namely Herpes Simplex Virus type I (HSV-I), which commonly spreads around the mouth, and Herpes Simplex Virus type II (HSV-II), which commonly spreads in the genital area and its ... -
Perbandingan Tingkat Akurasi Metode Fuzzy Mamdani dan Fuzzy Sugeno dalam Memprediksi Jumlah Kebutuhan Darah (Studi Kasus: PMI Kota Medan)
(Universitas Sumatera Utara, 2024)Blood demand prediction is important to avoid instability in blood stocks or supplies. Too much and abundant blood stock can cause losses, due to the risk of wasted blood when it passes the storage limit period, while too ... -
Studi Perbandingan Metode PSI, PSI-TOPSIS, dan PSI-MABAC dalam Menganalisis Kinerja Keuangan Perusahaan BUMN yang Terdaftar di BEI
(Universitas Sumatera Utara, 2024)This research provides deeper insight into the advantages and disadvantages of each MCDM method in the context of evaluating SOE performance rankings. This research also shows the peformance of PSI which is used singly and ... -
Kajian Metode Fuzzy Time Series-Chen dan Fuzzy Time Series-Markov Chain dan Terapan pada Peramalan Curah Hujan
(Universitas Sumatera Utara, 2024)This research uses the Fuzzy Time Series-Chen and Fuzzy Time Series-Markov Chain methods to study and apply both methods to forecasting rainfall in Medan City so that the accuracy of each method is obtained. Fuzzy Time ... -
Implementasi Metode Goal Programming dalam Optimalisasi Perencanaan Produksi Keripik (Studi Kasus : UD. Keripik Cinta Mas Hendro)
(Universitas Sumatera Utara, 2024)Goal programming is a development of linear programming models. The goal programming method is one of the optimization techniques that can solve problems with multiple goals or objectives. In this study, this method was ... -
Implementasi Algoritma Genetika untuk Penjadwalan Perkuliahan (Studi Kasus : Program Studi Sarjana Matematika di Universitas Sumatera Utara)
(Universitas Sumatera Utara, 2024)Scheduling lectures effectively and efficiently is a major challenge because of the complexity of arranging time, space and lecturers according to various courses and number of students. According to observations made in ... -
Analisis Kinerja Reksa Dana di Indonesia menggunakan Regresi Robust
(Universitas Sumatera Utara, 2024)The Least Squares Method (MKT) is the best linear regression estimator if the classical assumption tests are met. However, if there are outliers in the data, this approach can provide inaccurate prediction results. Therefore, ... -
Perbandingan Metode Continuous Review dan Periodic Review dalam Pengendalian Persediaan Bahan Baku (Studi Kasus: UD. Keripik Cinta Mas Hendro)
(Universitas Sumatera Utara, 2024)UD. Keripik Cinta Mas Hendro is a business that produces snacks, the product that is in great demand is sweet potato chips, with a policy that is not good for irregular demand, making demand not be met, so to overcome this, ... -
Analisis Termal Aspal Modifikasi Poliuretan Alam dari Getah Pinus Merkusii (Jungh et de Vries) dan Peg 400 dengan Penambahan Toluena 2,4-Diisosianat
(Universitas Sumatera Utara, 2024)This study examines the modification of polymer asphalt with polyurethane through several stages. The first stage involves the production of polyol from Pinus merkusii resin by reacting it with 90% formic acid and 30% H₂O₂. ... -
Analisis Variasi Rasio Temperatur dan Waktu Pirolisis terhadap Produksi Grafena Berlapis Nano dari Cangkang Kelapa Sawit (Elaeis Guineensis Jacq.)
(Universitas Sumatera Utara, 2024)Research on the analysis of the variatios in temperature (T) and time (t) ratio during pyrolysis on the production of graphene nano sheets from palm kernel shells has been conducted. The purpose of this research is to ... -
Modifikasi Pati Sukun (Artocarpus Altilis) melalui Reaksi Esterifikasi dengan Asam Miristat dalam Media Larutan Urea/NaOH
(Universitas Sumatera Utara, 2024)Modification of breadfruit starch into myristic starch was done through esterification reaction between breadfruit starch (Artocarpus altilis) and myristic acid. This research was conducted in two stages, namely, isolation ... -
Sintesis Metil Oleat dari Asam Oleat dengan Metanol pada Perbandingan Rasio Molar dan Daya Microwave menggunakan Katalis Abu Kulit Durian
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate from esterification reaction between oleic acid with methanol was performed using calcined durian peel ash as catalyst and microwave irradiation has been carried out. Durian powder was ... -
Efektivitas Defibrilasi pada Isolasi Nanoserat Selulosa Batang Eceng Gondok (Eichornia Crassipes) melalui Perlakuan Awal Ledak Uap dan Variasi Waktu Ultrasonikasi
(Universitas Sumatera Utara, 2024)Water hyacinth is among the world's top 10 invasive weeds due to its adaptability and high growth rate. Its high cellulose content makes water hyacinth a potential source of cellulose nanofiber (CNF) for alternative ... -
Sintesis Natrium Alginat Termodifikasi Dopamin sebagai Binder untuk Anoda Nanosilikon dalam Baterai Ion Litium
(Universitas Sumatera Utara, 2024)The potential of silicon as the anode material of future high-capacity lithium-ion batteries is still difficult to realize due to the low mobility of electrons and the material's vulnerability to damage from considerable ... -
Efek Oksida Logam terhadap Sifat Fisis Minyak Sawit/Solar
(Universitas Sumatera Utara, 2024)Indonesia's petroleum reserves are decreasing daily, due to the non-renewable nature of fossil fuels. Alternative energy sources are needed as a substitute for fuel by utilizing palm oil and diesel oil commonly called ... -
Karakterisasi Film dari Pati Singkong (Manihot Esculenta) sebagai Antibakteri Pseudomonas Aeruginosa pada Luka Sayat
(Universitas Sumatera Utara, 2024)Films are thin sheets used to close and protect wounds. Films are often made from materials such as starch and chitosan as an antibacterial agent for Pseudomonas aeruginosa. Film making in the form of plaster is by mixing ...