Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1461-1480 of 11350
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Pembuatan Metil Selulosa dari Selulosa Tongkol jagung (Zea mays L) dengan Dimetil Sulfat (DMS) pada Variasi Volume DMS dan Temperatur
(Universitas Sumatera Utara, 2023)The manufacture of methyl cellulose is carried out through an etherification reaction between α-cellulose isolated from Corn Cobs (Zea mays L) and dimethyl sulfate. Isolation of α-cellulose with the addition of 3.5% HNO3, ... -
Pembuatan Komposit Kayu Plastik dari Polistirena Tergrafting Maleat Anhidrida dan Serat Ijuk
(Universitas Sumatera Utara, 2023)Characterization of wood plastic composites using polystyrene grafted with maleic anhydride with variations in the mass of sugar palm fiber as a filler has been successfully carried out. This research was carried out in ... -
Penerapan Metode Goal Programming dalam Pengoptimalan Produksi Crude Palm Oil dan Crude Palm Karnel Oil (Studi Kasus : PT. Barumun Agro Sentosa)
(Universitas Sumatera Utara, 2022)Planning in production is an action from the company that can determine the success of a company. PT. Barumun Agro Sentosa is a company that owns oil palm plantations and mills. This research aims to analyze the Goal ... -
Peningkatan Akurasi Pembacaan ADC 10BIT ATMEGA328 terhadap Sensor Arus ACS712 dari 27mA/BIT menjadi 5mA/BIT Menggunakan Differential Amplifier AD620 dan Kalman Filter
(Universitas Sumatera Utara, 2022)Research has been carried out on the design of a current measuring device using the ACS712 current sensor which has increased the reading sensitivity using an AD620 differential amplifier and a Kalman filter. This study ... -
Penerapan Metode Maksimum Likelihood untuk Analisis Komparatif Nilai Parameter Sismotektonik dari Hubungan Magnitudo Kumulatif dan Non Kumulatif di Sumatera Utara
(Universitas Sumatera Utara, 2022)Estimation is the activity of making statistical conclusions, from general to concrete, which makes it possible to draw conclusions and get closer to the truth. Maximum likelihood method and Bayesian method are methods for ... -
Pengembangan Metode Steepest Descent pada Optimasi Tanpa Kendala
(Universitas Sumatera Utara, 2022)The q-gradient method with the Yuan step size search on odd steps and geomet- ric recursion as the even step size search is called q - GY1. It aimed to speed up convergence to a minimum by minimizing the number of ... -
Pemodelan Berbasis Graf untuk Strategi Optimal dalam Pembelian Online
(Universitas Sumatera Utara, 2022)Discount is a type of purchase promotion that is presented based on the total value of consumer purchases. In this study, the problem of optimizing online pur- chases is examined, where a buyer is interested in buying ... -
Pendekatan Machine Learning untuk Memprediksi Kesulitan Keuangan Perusahaan
(Universitas Sumatera Utara, 2022)Machine Learning is a method that is widely used to replace or imitate human behavior in solving problems or optimizing. Support Vector Machine is part of Machine Learning which was developed to solve classification ... -
Model Optimisasi Diskrit dalam Membentuk Pohon Keputusan Optimal
(Universitas Sumatera Utara, 2022)Decision problems are commonly used in real world. In this case, there are several alternatives to be chosen with different outcome values and limitations that should not be exceeded. Various methods have been developed ... -
Model Keputusan untuk Transfer ICU yang Tidak Direncanakan di Sebuah Rumah Sakit Menggunakan Pendekatan Optimasi Deep Learning
(Universitas Sumatera Utara, 2022)Unplanned ICU transfer is one of the most important initial decisions after pa- tient management in the ER because apart from being an indicator of the quality of care for ER practitioners, it is also needed to achieve ... -
Optimisasi dalam Pengelompokan Zona Bahaya setelah Bencana Gempa
(Universitas Sumatera Utara, 2022)There are a large number of approaches to clustering problems, including opti- mization - based methods involving mathematical programming models to develop efficient and meaningful clustering schemes. Grouping is one ... -
Graf Acak dengan Batas pada Derajat Maksimum
(Universitas Sumatera Utara, 2022)Let G ∈ G(n, p) be a graph on n vertices where each pair of vertices is joined independently with probability p for 0 < p < 1 and q = 1 − p. In this case, we introduce weighted random graf G which are assumed to have an ... -
Panjang Cycle dari Graf Jarang
(Universitas Sumatera Utara, 2022)Let G be a d-reguler graph with n-vertices and girth g. Set of cycle length in graph G is denoted by C(G). Graph G is a sparse graph if and only if the ratio of the number of edges in the graph and the number of maximum ... -
Pengambilan Keputusan Berbasis Data Driven dalam Perencanaan Produksi Skala Besar
(Universitas Sumatera Utara, 2022)Production planning is one of the things that is very important for the Compa- ny, especially for those engaged in production so that they can make the right decisions. That way, from production activities it is hoped ... -
Model Optimisasi Location Routing Problem untuk Distribusi Bantuan Bencana
(Universitas Sumatera Utara, 2022)Disaster relief distribution is a very important component in the overall disaster response process. Consideration of limited funds, time pressure and surge of de- mand that come together increase to the complexity of ... -
Penggunaan Pendekatan Deep Constrained Clustering untuk Membuat Profil Bisnis
(Universitas Sumatera Utara, 2022)In the development of technology at this time, data processing has been massively carried out by carrying out several approaches and data constructions. Data min- ing is the process of extracting data from a large database ... -
Sintesis Alkanolamida Asam Lemak dari Palm Fatty Acid Distillate (PFAD) dan Etanolamin Menggunakan Radiasi Mikrowave
(Universitas Sumatera Utara, 2023)Synthesis of alkanolamide from the amidation of PFAD and monoethanolamine without catalyst under microwave iradiation has been studied. Parameters of the molar ratio of PFAD to monoethanolamine, reaction time and microwave ... -
Pengembangan Kitosan dengan Eucalyptus Grandis Berbasis Potensi Lokal sebagai Pembersih Mulut
(Universitas Sumatera Utara, 2022)Oral health needs to be improved through additional mechanical methods, specifically mouthwash based on chitosan with Eucalyptus grandis as a local potential in North Sumatera. The purpose of this study was to analyze ... -
Karakterisasi dan Pembuatan Virgin Candlenut Oil (VCdO) Menggunakan Ekstrak Enzim Bromelin dan Enzim Papain Kasar
(Universitas Sumatera Utara, 2022)Virgin Candlenut Oil (VCdO) can be made enzymatically from bromelain enzyme extract and crude papain enzyme. The purpose of this study was to determine the characteristics of Virgin Candlenut Oil (VCdO) obtained using ... -
Peningkatan Sifat Fisik dan Sifat Mekanik serta Ketahanan Rayap Kayu Simalambuo (Loppopethalum Spp.) dengan Teknik Impregnasi Menggunakan Kombinasi Asap Cair dan Minyak Silikon
(Universitas Sumatera Utara, 2022)Wood is a renewable natural material. Many methods have been used in wood preservation efforts. The use of liquid smoke is very effective in increasing wood resistance to fungi and termites. Researchers combined liquid ...