Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 81-100 of 11456
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Simulasi Optimasi Daya pada Panel Surya dengan Maksimum Power Point Tracking (MPPT) Menggunakan Algoritma Perturb and Observe dengan Matlab Simulink
(Universitas Sumatera Utara, 2025)This project focuses on the design, implementation, and performance evaluation of a solar power system equipped with a Maximum Power Point Tracking (MPPT) controller based on the Perturb and Observe (P&O) algorithm. A boost ... -
Sensitivitas dan Limit Deteksi Elektroda Termodifikasi Kitosan/GQDs/Fe3O4 dalam Mengukur Konsentrasi Kolesterol Menggunakan Metode Voltametri Siklik
(Universitas Sumatera Utara, 2025)In this research, the chitosan/GQDs/Fe3O4 modified electrode has been successfully carried out in measuring cholesterol using the cyclic voltammetry method. The chitosan/GQDs/Fe3O4 modified electrode was fabricated ... -
Algoritma Genetika Hibrid pada Permasalahan Optimasi Portofolio Dinamis
(Universitas Sumatera Utara, 2025)Dynamic portfolio optimization is a crucial problem in evolving financial markets, requiring investment decisions to be adjusted over time. Traditional methods such as Linear Programming (LP) and Quadratic Programming ... -
Prediksi Kebutuhan Energi Listrik Kota Medan Menggunakan Metode Jaringan Syaraf Tiruan Model Algoritma Backpropogation
(Universitas Sumatera Utara, 2025)This study aimed to predict the electrical energy demand at PT PLN (Persero) UP3 Medan for the next two years using the Artificial Neural Network (ANN) with the Backpropagation model. The purpose was to assist the company ... -
Perpindahan panas pada Fluida Non-Newton
(Universitas Sumatera Utara, 2021)Non-Newtonian fluids exhibit behaviour deviating from Newton’s law. In Sisko fluid flow, which is a non-Newtonian fluid, within pipes, the relationship between shear stress magnitude and shear strain becomes linear as ... -
Teori Permainan Fuzzy dalam Menentukan Strategi Pemasaran Optimum pada Shopee, Lazada dan Tokopedia
(Universitas Sumatera Utara, 2025)The rapid advancement of the times has resulted in every human activity being inseparable from technology. Various new technologies are emerging in every field of life. One of the rapidly developing technologies is electronic ... -
Variasi Komposisi Serat Pelepah Aren (Arena pinnata) dan Serbuk Kayu Mahoni (Swietenia macrophylla) sebagai Papan Komposit dengan Perekat Polyester
(Universitas Sumatera Utara, 2025)A study was conducted on the variation of sugar palm frond fibers (Arenga pinnata) and mahogany wood powder (Swietenia macrophylla) as composite boards using polyester, adhesive with dimensions of 7,5cm × ... -
Rancangan Charging Station untuk Laptop Berbasis Tenaga Surya dengan Monitoring Tegangan, Arus, dan Daya
(2025)This research aimed to design and develop a solar-powered laptop charging station equipped with a real-time voltage, current, and power monitoring system. The system used solar panels as the main energy source, with the ... -
Sistem Pemantauan Getaran Bebas pada Bilah Turbin Angin Menggunakan Sensor Akselerometer Mikro-Elektro-Mechanical Systems Berbasis Internet of Things
(Universitas Sumatera Utara, 2025)Vibration monitoring of wind turbine blades is critical for detecting structural damage that affects system performance and stability. This study developed a real-time vibration monitoring system using an ADXL345 MEMS ... -
Keanekaragaman Jenis Burung Air dan Analisis Jenis Makrozoobentos sebagai Sumber Makanan Burung di Kawasan Ekowisata Mangrove Sicanang, Belawan
(Universitas Sumatera Utara, 2025)Sicanang Mangrove Ecotourism is a habitat for waterbird so the area is designated as an important bird area (IBA). Conditions in the Sicanang Mangrove Ecotourism Area have experienced many anthropogenic disturbances due ... -
Integrasi Anemometer dan Kincir Angin 300 Watt dalam Sistem IOT untuk Pemantauan Real-Time Melalui Telegram Berbasis Esp8266
(Universitas Sumatera Utara, 2025-09-19)Optimizing the potential and realizing the utilization of wind energy, such as in the coastal areas of Lake Toba, particularly in Silalahi III Village, requires further adjustments to the use of turbine models, monitoring, ... -
Perancangan Sistem Monitoring Arus, Tegangan, dan Waktu Pengisian Superkapasitor Berbasis Mikrokontroler untuk Spot Welder Portable
(2025)This research focused on the development of a microcontroller-based monitoring system for charging and discharging supercapacitors in portable spot welder applications. The system was designed using an Arduino Nano as the ... -
Home Security Control Menggunakan Sensor PIR, ESP32-Cam dan Lampu Blitz Berbasis Internet of Things
(Universitas Sumatera Utara, 2025)Home security systems are an essential technology to prevent criminal acts such as burglary while providing protection for residents and property. This research designed and implemented a home security control system based ... -
Optimasi Parameter Tuning pada Model Regresi Logistik Lasso
(Universitas Sumatera Utara, 2025)This study examines the optimization of the C parameter defined as the inverse of λ in the LASSO logistic regression model by comparing three cross-validation methods: KFold, Stratified KFold (SKF), and Repeated ... -
Studi Pemodelan Dispersi Sulfur Dioksida dengan Menggunakan Metode Gaussian Distribution pada Peternakan Babi di Mandala
(Universitas Sumatera Utara, 2025)A livestock can caused air pollution. One type of gas produced is sulfur dioxide (SO2). To measure the concentration of sulfur dioxide in the atmosphere can be done using the pararosaniline method. With this method, an ... -
Sistem Monitoring dan Notifikasi Detak Jantung Serta Saturasi Oksigen Menggunakan Sensor MAX30102 Berbasis Internet Of Things (IoT)
(Universitas Sumatera Utara, 2025)This study aims to design and evaluate the performance of a wearable Internet of Things (IoT)-based monitoring and notification system prototype. The prototype integrates an ESP32 microcontroller, a MAX30102 sensor to ... -
Sistem Monitoring dan Kontrol Suhu serta Kelembapan Menggunakan Sensor BME280 dan ESP32 Berbasis Blynk pada Ruang Kalibrasi
(Universitas Sumatera Utara, 2025)Temperature and humidity stability were essential in a calibration room to ensure that measuring instruments operated optimally. This study aimed to design an Internet of Things (IoT)-based system capable of automatically ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Flamboyan (Delonix regia (Bojer Ex Hook.) Raf.)
(Universitas Sumatera Utara, 2025)Flamboyan (Delonix regia (Bojer Ex Hook.) Raf.) is a plant that contains phytochemical compounds that have health benefits and are efficacious as medicinal ingredients. Isolation and identification of flavonoid compounds ... -
Pembuatan dan Karakterisasi Beton Polimer dengan Agregat Batu Apung serta Bonggol Jagung dan Serbuk Karet Ban sebagai Filler
(Universitas Sumatera Utara, 2025)Rubber tire powder, corn cobs, sand, and epoxy resin are the materials used in polymer concrete, which has been the subject of extensive research. The sand and corn cobs are sieved using a 100-mesh sieve. The materials are ... -
Makrofauna Tanah sebagai Spesies Bioindikator pada Areal Perkebunan Karet yang diberi Limbah Cair Pabrik Kelapa Sawit sebagai Pupuk
(Universitas Sumatera Utara, 2025)This research was conducted to determine the density and macrofauna of soil that acts as a bioindicator species in rubber plantations owned by the community in Firdaus Village. Determination of the sampling points was used ...