Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1101-1120 of 11352
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Model Kecepatan Seismik 1-Dimensi dan Ground Motion Gempa Bumi Tarutung 2022 M5,8
(Universitas Sumatera Utara, 2023)On 01st October 2022, a strong earthquake with a magnitude of Mw5.8 occurred in the northern region of Tarutung, causing significant damages and strongly felt by the local community. Initially, the Tarutung earthquake was ... -
Investigasi Tektonik Tarutung Berdasarkan Mekanisme Fokal dan Kelurusan Distribusi Gempa yang Akurat
(Universitas Sumatera Utara, 2023)On October 1st, 2022, the Mw 5.8 shallow earthquake occurred in the Tarutung region, North Sumatra, Indonesia, resulting in V – VI Modified Mercalli Intensity (MMI) scale, followed by 170 aftershocks and extensive damages. ... -
Analisis Plastik Biodegradable Berbahan Pati Temu Hitam-Kitosan dengan Penambahan Plasticizer Sorbitol
(Universitas Sumatera Utara, 2023)Biodegradable plastic made from curcuma aeruginosa roxb. rhizome starch-chitosan with the addition of sorbitol plasticizer is made by mixing curcuma aeruginosa roxb starch matrix, sorbitol as a plasticizer, and chitosan ... -
Estimasi Curah Hujan Bulanan Berbasis Machine Learning dalam Mendukung Ketahanan Pangan di Sumatera Utara
(Universitas Sumatera Utara, 2023)The monthly pattern of rainfalls in North Sumatra region is affected by various factors of global climate events, including El-Nino Southern Oscillation (ENSO), Indian Ocean Dipole (IOD) dan Madden Julian Oscillation (MJO). ... -
Uji Akurasi Produk dan Relasi Z-R Radar Cuaca dalam Estimasi Curah Hujan di Sumatera Utara untuk Masing-Masing Jenis Hujan
(Universitas Sumatera Utara, 2023)To reduce the impact of hydrometerological disasters, a research is needed in estimating rainfall. Weather radar is a type of remote sensing used in the field of meteorology to determine atmospheric conditions, measure ... -
Pengembangan dan Karakterisasi Alat Ukur Konduktivitas dan Aplikasinya pada Limbah Minyak Nabati Menggunakan Metode Wenner
(Universitas Sumatera Utara, 2023)The purpose of this study is the development of conductometer and its application in plant-based oil via Wenner method as an early preventive step in reducing environmental damage due to plant-based oil byproduct, such as ... -
Analisis Dinamika Atmosfer Saat Fenomena Tailwind dan Crosswind di Landas Pacu Bandar Udara Kualanamu
(Universitas Sumatera Utara, 2023)There are three wind components in aviation, i.e., headwind, tailwind and crosswind. The tailwind and crosswind can negatively impact the aircraft. Based on the Indonesia Air Navigation report, several events of tailwind ... -
Pemodelan Constrained Multiobjective Optimization pada Model Keputusan Optimal Pareto Frontier
(Universitas Sumatera Utara, 2023)In everyday life, all problems in our environment can be solved by using mathemat- ical modeling. The application of mathematical modeling in generating solutions often provides a single-purpose value. The solution given ... -
Analisis Gaya Hambat Bebatuan di Pinggir Pantai terhadap Gelombang Air Laut yang Menyebabkan Overtopping Menggunakan Elemen Hingga
(Universitas Sumatera Utara, 2023)Wave overtopping is an event where water waves reach and surpass the surface of coastal defense structures, which can lead to flooding and coastal erosion. This study examines the use of rock structures as wave attenuators ... -
Pemodelan Masalah Menu Diet Berdasarkan Pendekatan Boolean Linear Programming
(Universitas Sumatera Utara, 2023)This study aims to model the diet menu problem based on the Boolean Linear Pro- gramming approach. A balanced diet is the key to a healthy lifestyle. A balanced diet is a diet that combines foodstuffs in the right amount ... -
Pemodelan Matematika dalam Permasalahan Transportasi Logistik
(Universitas Sumatera Utara, 2023)Migration of rural communities to cities increases logistics activities in urban ar- eas to meet customer needs because there is a close relationship between economic expansion and usage. Daily fluctuating demand for ... -
Model Optimisasi Shared Group pada Multicast Routing
(Universitas Sumatera Utara, 2023)Routing is a process of sending packets or information from source to destination. Routing that is often used is unicast routing, from one source to one destination. However, many requests are sometimes unlimited to serve ... -
Analisis Komputasi Kestabilan pada Rambat Gelombang terhadap Submerged Permeable Breakwater Menggunakan Metode Elemen Batas
(Universitas Sumatera Utara, 2023)To produce wave retardation with minimal amplitude and speed, sea-water waves are one of the most difficult problems to solve numerically. The study aims to conduct a wave retardation stability analysis against a sinking ... -
Model Persediaan dengan Power Demand dan Partial Backlogging di Bawah Harga dan Permintaan Bergantung Waktu
(Universitas Sumatera Utara, 2023)This paper discusses an inventory model with power demand whose demand is a bivariate function of price and time which is the product of two power functions, one depending on the selling price and the other on the time ... -
Model Optimasi Vehicle Routing Problem pada Masalah Perutean Kendaraan Listrik dengan Time Windows, Recharging Stations dan Battery Swapping Stations
(Universitas Sumatera Utara, 2023)The use of electric vehicles recently is an alternative solution to reduce pollution and carbon emissions due to the use of motor vehicle fuel oil. The limited battery capacity of this electric vehicle is a problem for ... -
Model Optimisasi untuk Rute Kendaraan dan Penjadwalan dengan Logistik Forward dan Reverse
(Universitas Sumatera Utara, 2023)To reduce logistics costs, many companies use cross-docking. The process of sending products from suppliers to retailers and vice versa is facilitated by crossdocking facilities. One of the important cross-docking issues ... -
Penggunaan Algoritma Hybrid Artificial Bee Colony dalam Penjadwalan Mata Kuliah
(Universitas Sumatera Utara, 2023)Scheduling is a common problem that often occurs in colleges, universities, and other educational institutions. The scheduled course timetable in a university will determine the activities of the teaching and learning ... -
Sensitivitas Elektroda Termodifikasi Kitosan/Oksida Grafena Tereduksi dalam Mendeteksi Konsentrasi Pupuk Urea Menggunakan Voltametri Siklik
(Universitas Sumatera Utara, 2023)Chitosan (CS)/reduced graphene oxide (rGO) modified platinum electrode has been successfully tested using cyclic voltammetry (CV) method to detect urea fertilizer concentration. Chitosan-reduced graphene oxide (rGO) was ... -
Analisis Metamfetamin pada Maggot Serangga Necrophagous Menggunakan Gas Chromatography- Mass Spectrometry (GCMS) sebagai Aplikasi Entomotoksikologi Forensik
(Universitas Sumatera Utara, 2023)Cases of death of methamphetamine abusers in Indonesia were increasing, where bodies are generally found after several days of investigation, so forensic entomotoxicology uses insects to detect methamphetamine. The use ... -
Penyediaan Hidrogel Berbasis Selulosa Bakteri/ Polivinil Alkohol-Mikroenkapsulasi Ekstrak Daun Kemuning (Murraya paniculata (L.) Jack) Berpotensi sebagai Bahan Material Pembalut Luka
(Universitas Sumatera Utara, 2023)The development of traditional wound dressings such as gauze into modern hydrogel wound dressings is currently being developed. Hydrogel based on SB/PVAMEDK which has the potential as a wound dressing material has been ...