JTT (Jurnal Teknologi Terapan)
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238 research outputs found
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Sistem Rekomendasi Pencarian Kerja dengan Metode Simple Additive Weighting Berbasis Website (Studi Kasus SMKN 1 Terisi)
No full textThe rapid development of technology in the digital era has brought about rapid changes in the world of education. To address the challenges of work, providing a system capable of effectively integrating processes with job recommendations is crucial. This study creates a website-based job recommendation system using the Simple Additive Weighting (SAW) method to provide recommendations for the most suitable job vacancies based on several criteria such as major, location, type of job, and required requirements, as well as to generate accurate recommendation rankings. The results of this study are expected to provide more targeted job recommendations that are in accordance with user profiles. This can also help schools evaluate the relevance of the curriculum and facilitate alumni in obtaining jobs that match their competencies
Pemanfaatan Sampah Daun sebagai Prekursor Karbon Melalui Proses Karbonisasi untuk Aplikasi Tinta Cetak Offset Ramah Lingkungan
No full textLeaf waste contains carbon, which has potential as a raw material for carbon-based printing inks. This study aimed to explore the process of converting leaf waste into carbon materials and to analyze the physical properties of the resulting ink, particularly its density and viscosity. The carbon material was produced through carbonization at 500 °C for two hours, followed by screening using a mesh filter. The ink was formulated by mixing the carbon material with gum arabic, distilled water, and ethanol using various carbon-to-gum arabic ratios (ranging from 5:2 to 5:6 g/g). The results showed that increasing the concentration of gum arabic led to higher density and viscosity. The optimum formulation that met the Indonesian National Standard (SNI) had a density of 0.97 g/ml, viscosity of 1.20 cP and pH of 8.5. These findings indicate that leaf waste has potential as an eco-friendly alternative material for carbon-based printing ink production
RANCANG BANGUN ALAT UKUR GAYA DORONG DAN MOMEN UNTUK PROPELER UAV KECIL: KAJIAN SUBSISTEM
Full text linkThrust and Moment Meter (TMM) is an instrument for measuring thrust and moment or torque produced by a small electric propulsion system, which is usually used on Unmanned Aerial Vehicles (UAV) and/or small size Radio Control (RC) aircraft. This tool is designed with low-cost materials and simple process, namely Acrylonitrile Butadiene Styrene (ABS) plastic using 3D printing technology. The main component of this device is an Arduino Nano microcontroller, equipped with three Load Cell sensors and one LCD screen. The results of this research are that the TMM tool has been successfully created and tested for accuracy in several cases, and very good results were obtained where the force measurement accuracy was more than 99% (error < 1%)
INFORMATION RETRIEVAL BERBASIS LATENT DIRICHLET ALLOCATION PADA DATA KEKAYAAN INTELEKTUAL
Full text linkThe shift toward a knowledge-based economy underscores the importance of intellectual property (IP) management. Unfortunately, conventional keyword-based search methods often fail to capture the semantic relationships between concepts in documents—particularly complex ones like patents and copyrights. This study proposes a topic modeling approach using the Latent Dirichlet Allocation (LDA) method to improve the relevance and accuracy of information retrieval in IP data. The research developed 76 models based on four scenarios: with and without language translation, and with and without n-gram tokenization, using topic numbers ranging from 1 to 19. The best four models from each scenario yielded coherence scores between 0.4411 and 0.4581. Evaluation using Mean Average Precision (MAP) on the top 10 documents showed that the model without translation and with unigram tokenization (10 topics) achieved the best results with an average MAP of 78%. The findings indicate that language translation and n-gram tokenization do not significantly impact the coherence score. However, models without n-gram tokenization (bigram and trigram combinations) yielded relatively more semantically relevant search results based on MAP values. Automatic translation in this study resulted in lower MAP scores compared to models without translation
Pengaruh Modifikasi Silinder 150 cc Menjadi 180 cc Terhadap Kinerja Sistem Pendingin Pada Sepeda Motor
No full textThis study analyzes the effect of engine modification from the standard 150 cc capacity to 180 cc on the cooling system of a motor vehicle. The modification aims to increase engine power, but the increased engine capacity creates challenges due to higher operating temperatures that affect the cooling system. The research was conducted using an experimental method by comparing the cooling system’s performance before and after the modification, focusing on coolant temperature, engine RPM, and thermostat response.The results show that after the modification, coolant temperature significantly increased, especially at high RPMs, indicating a higher cooling load. This temperature rise led to reduced radiator efficiency in dissipating heat and a decrease in optimal thermostat response. This condition poses a risk of overheating if the cooling system is not adjusted accordingly.Based on these findings, the study recommends increasing the radiator capacity with a larger cooling area and using a coolant fluid with better heat transfer efficiency. The conclusion provides valuable insight for automotive enthusiasts and technicians about the impact of engine capacity modifications on the cooling system, emphasizing the need to upgrade the cooling system to maintain optimal and safe engine performanc
Sistem Interstrand Test Otomatis Berbasis Real-Time Data Logger untuk Pengecekan Isolasi Winding Power Transformer Material CTC Wire
No full textThe interstrand test is a method used to check and identify damage to inter-strand insulation in power transformer coils. This research aims to develop an automatic and efficient interstrand testing device. Currently, the interstrand test is still performed manually, where each strand is measured separately and the results are recorded by hand on a control sheet. The long, non–real-time process and its dependence on manual recording increase the risk of human error. To address these issues, this study designs an automatic interstrand testing tool that improves process efficiency, reduces measurement time, and provides real-time test data. The results show that the developed device significantly increases measurement efficiency and is capable of generating real-time interstrand test reports. Overall, the efficiency of the interstrand testing process improves by 255% compared to the manual method
Perbandingan LSTM dan GRU untuk Prediksi Kebutuhan Air pada Pertanian Modern Cerdas Berbasis Internet Of Things
No full textTo support efficient modern agriculture, smart irrigation systems based on the Internet of Things offer a strategic solution to optimize water usage. This study qualitatively analyzes and compares two deep learning models Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU) in predicting the water needs of chili plants in real-time. The system uses an ESP32 microcontroller for data acquisition and Node-RED as a visual interface for integration and monitoring. Temperature, air humidity, soil moisture, and rainfall data are collected every five seconds and processed using a sliding window approach. The analysis shows that GRU is more computationally efficient and suitable for edge devices like ESP32, while LSTM offers better stability in handling fluctuating input data. Both models provide accurate predictions and are applicable to AI-based precision irrigation systems. These findings support the potential of artificial intelligence in improving water management efficiency in agriculture through reliable, real-time decision-making
PENGARUH VARIASI ARUS TERHADAP KETEBALAN LAPISAN OKSIDA DAN KECERAHAN WARNA ALUMUNIUM 6061 DENGAN METODE ANODIZING
Full text linkAnodizing on aluminum aims to change the metal surface into an oxide layer so that it becomes a decorative layer, increases its hardness mechanical properties, and is resistant to corrosion. Aluminum 6061 is one of the most common types of aluminum alloy used in various industrial applications. In this research, the anodizing process was carried out using Aluminum 6061, current variations of 1, 2, and 3 amperes were chosen to determine surface characteristics including the thickness of the oxide layer, microscope macro-observations, and color brightness. The results of the experiment show that the layer oxidation thickness increases with increasing current. The results shows that the greater the current used in the anodizing process, the darker the color will be
SISTEM PENGAJUAN ASSESSMENT KEBENCANAAN BERBASIS WEBSITE UNTUK MENINGKATKAN RESPONS TANGGAP DARURAT DI KABUPATEN KEBUMEN
Full text linkKebumen Regency, located on the southern coast of Java, faces a high disaster risk due to its position in a tectonic subduction zone that can trigger major earthquakes. The presence of the Sempor and Wadaslintang dams further increases vulnerability to potential failures during seismic events. This study identifies the need for a rapid and accurate disaster assessment system to strengthen preparedness and emergency response. To address this, we developed a web-based system that enables both communities and government officials to collect real-time data from affected areas. System development, functionality testing, and performance evaluation were conducted to assess its effectiveness. The results show that the system delivers timely and accurate data, enhances coordination, and improves community resilience. This system is expected to be an efficient solution for disaster management in Kebumen Regency
RANCANG BANGUN ALAT KHUSUS UNTUK MEMBUKA NUT YANG TERKOROSI
No full textAircraft are highly complex transportation modes, assembled from various components to ensure optimal safety and reliability. One of the small yet essential components frequently used in aircraft is the nut, which generally exhibits corrosion resistance due to its stainless steel 304 material. However, corrosion can still occur, particularly in areas such as the galley, landing gear, lavatory, and engine construction. This study aims to develop a specialized tool to facilitate aircraft maintenance by effectively removing corroded nuts. The tool was designed using CAD SolidWorks and manufactured through turning, grinding, milling, and welding processes. It operates by clamping the nut and applying impact force until the nut breaks, utilizing a sharp blade to destroy the nut without damaging surrounding aircraft components. Torque testing was conducted to measure the rotational force capacity for various nut sizes. The test results demonstrate that the developed tool can efficiently, safely, and effectively remove corroded nuts, thereby simplifying aircraft maintenance and reducing the risk of damage to other components