Journal of Innovation and Technology
type: channel
description: JIT: Journal of Innovation and Technology is published by the Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia. We are delighted to announce that JIT has been accredited by the National Journal Accreditation (ARJUNA) Managed by the Ministry of Research, Technology, and Higher Education, Republic Indonesia with Grade 5th (Sinta 5) since Vol. 1 Ed. 1 April 2020 valid through Vol. 5 Ed. 2 October 2024. The accreditation is according to decree no. 225/E/KPT/2022, dated 7 December 2022. The certificate is attached. Journal of Innovation and Technology aims to publish original research articles and critical review manuscripts in Engineering and technology. The topics include but are not limited to Chemical and Environmental Engineering, Mechanical and Manufacturing, Industrial Engineering, Computer and Information Technology, Electrical and Telecommunication, Materials and Mining, Civil and Geodetic Engineering, Architecture and Urban Planning, Geophysical Science and Engineering, Physics Science and Engineering, Mathematics and Applied Sciences, Medical Science and Biomedical Engineering, Food Science and Agricultural Engineering, Science Innovation and Interdisciplinary Engineering research. The publication schedule is planned to be two times per year: April and October, starting from Vol. 1 No. 1, April 2020. JIT is hosted by the Faculty of Engineering, Universitas Lampung, and the Faculty of Engineering Universitas Maritim Raja Ali Haji (UMRAH). We invite all lecturers, postgraduate students, and researchers to contribute to the manuscript submission.
publisher: Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia
language: en
publication name: Journal of Innovation and Technology
issn: 2721-8570
items: Heat Transfer Efficiency Analysis and the Impact of Fouling Factor on Shell and Tube Heat Exchangers in Petroleum Processing
items: Production of Sodium Silicate from Imperata cylindrica Ash by Sodium Carbonate-Assisted Alkaline Extraction
items: Chemical Oxygen Demand (COD) Reduction and Electricity Generation of Unila Retention Pond Water Treatment Using Microbial Fuel Cells (MFCs)
items: FRP Tank Scrubber Design Optimization Using ASME RTP-1 Standard for Biogas Power Plant: A Case Study of The Tapioca Mill in West Tulang Bawang, Lampung
items: Advanced Failure Analysis of Hydraulic Systems in Volvo Articulated Haulers at Coal Mining Sites: Investigating Steering Cylinder Seal Failure and Brake Accumulator Degradation
items: The Effect of Welding Current on the Mechanical Properties of AISI 1040 Steel and AISI 1020 Steel in Bimetal Welding Using the Shielded Metal Arc Welding Method with AWS E 7016 Electrodes
items: The Effect of Welding Speed on the Welding Quality AISI 1020 and AISI 1050 Steel Using Shielded Metal Arc Welding Technology
items: Ergonomic Analysis of a Modified Dishwashing Facility in a Medium Scale Restaurant
items: The Effect of Fracture Strength of Composite Materials with the Addition of Pineapple Leaf Fiber
items: Implementation of the Biophilic Design Concept to Co-working Space in Bandar Lampung
items: Statistical Performance Analysis of a 20 kV Circuit Breaker at Bangka Substation
items: Vehicle Safety System Integrated with GSM Network (Global System for Mobile Communications) on Vehicle Ignition System
items: Investigation of Electrical Voltage Influence on Thermoelectric Cooler (TEC) Performance in a Stacked Cooling Enclosure
items: Implementation of Exploratory Data Analysis (EDA) in Predicting Customer Churn Decision Levels Using Naive Bayes Algorithm
items: The Effect of Matos Soil Stabilizer Addition to Fly Ash Stabilized Road Foundation Layer on the Index Properties of Soil
items: Comparison Study Between the Experimental and Finite Element Analysis (FEA) on a Static Load of Magnesium AZ31B as Biodegradable Bone Plate Material
items: Utilization of Spent Bleaching Earth Waste in Soil-Lime Stabilization for Road Body Foundation Layers Based on Index Properties
items: Effect of Sintering Temperature on The Adhesion Quality of Hydroxyapatite on Porous Tantalum for Cancellous Bone Implant Application
items: Analysis of PM2.5 Level Related to Vehicle Activities in Campus Parking Lot
items: The Effect of Matos Soil Stabilizer on Mechanical Properties of Soil Stabilized with Cement
items: Evaluation of Swelling – Shrinkage of Soil Stabilized with Cement and Spent Bleaching Earth
items: The Influence of Adding Matos Soil Stabilizer to the Foundation Layer of a Road Body Stabilized Using Lime on it’s Physical Properties.
items: Intelligent Eyes on the Battlefield: Developing an AI-Vision Based Military Vehicle and Infantry Detection System
items: Experimental trials to detect the lateral displacement on granular material embankment inserted geosynthetics due to the vertical loads
items: Integrating Blue Carbon Estimation into Mangrove-Based Coastal Protection Infrastructure Planning: A Case Study in Dompak Island, Tanjungpinang
items: New Viewpoint Era of Weather Monitoring: Arduino Based Portable Weather Station Design
items: Study of Deformation Behavior of Retaining Walls at Sepakat Ii Parallel Road Project in Pontianak City
items: Weather Forecast for Bandar Lampung City Using Random Forest and C4.5
items: Simulation Study of Small-Scale Electricity Generation Plant Utilizing Flue Gas of Solid Garbage Waste Incineration as Energy Source
items: Escalation of Visual Street Furniture Accentuation at Public Corridor of Baiturrahman Mosque in Putroe Phang Park

Heat Transfer Efficiency Analysis and the Impact of Fouling Factor on Shell and Tube Heat Exchangers in Petroleum Processing
type: item
description: Heat exchangers are essential equipment in petroleum processing, functioning to transfer heat between fluids to enhance process energy efficiency. Over extended periods of operation, the performance of these heat exchangers can decline significantly due to the formation of fouling on the heat transfer surfaces. This study aims to analyze the heat transfer efficiency and evaluate the impact of the fouling factor on a shell and tube heat exchanger (HE-05) operating in the crude oil refinery unit at PPSDM MIGAS Cepu. The research method employs a quantitative approach based on actual operational data obtained through direct field observations, including temperature data, flow rates, fluid densities, and equipment technical specifications. Performance evaluation was conducted by calculating the overall heat transfer coefficient, fouling factor, pressure drop, and thermal efficiency. The analysis results indicate that the overall heat transfer coefficient under clean conditions (Uc) was 4.65 Btu/ft².hr.°F, while under actual operating conditions (Ud), it decreased to 4.31 Btu/ft².hr.°F. The obtained fouling factor reached 0.0169 ft².hr.°F/Btu, exceeding the recommended minimum standard value, which indicates an accumulation of foulants. Nevertheless, the heat transfer efficiency of the equipment was recorded at 82.8%, which is classified as good and remains within the ideal efficiency range for shell and tube types. The pressure drop values on both the shell and tube sides were also confirmed to be far below the maximum allowable limits, suggesting that the equipment is still hydraulically suitable for operation. Based on these findings, scheduling periodic maintenance and cleaning is highly necessary to sustain the operational efficiency and performance of the heat exchanger
subject: Articles
  topic: section
subject: Heat transfer efficiency, fouling factor, shell and tube heat exchanger, petroleum processing, pressure drop
  topic: keywords
creator: Fatimah Az Zahro
creator: Mukasi Wahyu Kurniawati
creator: Ani Purwanti
rights: Copyright (c) 2026 Journal of Innovation and Technology
date: 2026-04-30
publication date: 2026-04-30
starting page: 29
ending page: 34

Production of Sodium Silicate from Imperata cylindrica Ash by Sodium Carbonate-Assisted Alkaline Extraction
type: item
description: The ash of Imperata cylindrica (cogon grass) contains silica that can be utilized for sodium silicate production. This work investigated its extraction using a sodium carbonate-assisted alkaline process. To evaluate silica recovery, 25 g of cogon grass ash was extracted with sodium carbonate solution at 100 ± 5 °C under different extraction times, sodium carbonate concentrations, and solvent volumes. The resulting filtrate was concentrated to obtain sodium silicate solution, and the effectiveness of the extraction process was assessed through silica recovery. The results revealed that all operating variables investigated had a significant effect on silica recovery. The best result was obtained at 75 min extraction time, 25 wt% sodium carbonate concentration, and 350 mL solvent volume, with a silica recovery of 41.59%. The increase in silica recovery was attributed to enhanced silica dissolution and improved mass transfer between the solid and liquid phases. The increase in silica recovery was influenced by more effective silica dissolution during extraction. Even though the recovery was lower than that commonly obtained from rice husk ash, cogon grass ash can still be considered a promising alternative silica source.
subject: Articles
  topic: section
subject: sodium silicate
  topic: keywords
subject: Imperata cylindrica ash
  topic: keywords
subject: alkaline leaching
  topic: keywords
subject: water glass
  topic: keywords
creator: Ani Purwanti
creator: Mukasi Wahyu Kurniawati
creator: Anak Agung Putu Susastriawan
rights: Copyright (c) 2026 Journal of Innovation and Technology
date: 2026-04-30
publication date: 2026-04-30
starting page: 19
ending page: 28

Chemical Oxygen Demand (COD) Reduction and Electricity Generation of Unila Retention Pond Water Treatment Using Microbial Fuel Cells (MFCs)
type: item
description: Unila retention pond water not only received stormwater but also greywater from Griya Kencana’s drainage outlet. It might drive the to water quality degradation. Hence, the stacked Microbial Fuel Cells (MFCs) were utilized to treat the water. MFC utilize microbial activities to degrade the organic pollutant in wastewater while simultaneously generating bioelectricity through biochemical reactions. In this research, the MFCs was configured in series and parallel set up with overall number of cells was 12 for each configuration. But in parallel, it consists of two set of 6 cells series set up. The reactor consisted of graphite that function as the anode and zinc to work as cathode. The spacing between electrodes was 1 cm. Each cell of MFCs was design as air cathode system. The operation of MFCs was a batch system with Hydraulic Retention Time (HRT) 7 days. The research objectives were to evaluate the capability of stacked MFCS (series and parallel) to treat the water in term of Chemical Oxygen Demand (COD) Removal and to generate electricity. The results demonstrated that the stacked MFCs had successfully treated the water with efficiency of COD removal 22.34% for series configuration and 8.51% for parallel configuration. The systems also achieved electricity generation by maximum voltage 8.11 V and 4.12 V for series and parallel respectively. Maximum current value for series MFCs was 0.14 mA and parallel MFCs was 0.15 mA.
subject: Articles
  topic: section
subject: Unila retention pond water
  topic: keywords
subject: Stacked MFCs
  topic: keywords
subject: water treatment
  topic: keywords
subject: electricity generation
  topic: keywords
creator: Siti Nurul Khotimah
creator: Syabrina Samsu Raudhatul Mawadah
creator: Ihsanuddin Fadillah
creator: Intan Suroya Hazlin
creator: Mila Preselya
creator: Andini Putri Karisma
creator: M. Ridho Ulya
creator: Ofik Taufik Purwadi
rights: Copyright (c) 2026 Journal of Innovation and Technology
date: 2026-04-30
publication date: 2026-04-30
starting page: 11
ending page: 18

FRP Tank Scrubber Design Optimization Using ASME RTP-1 Standard for Biogas Power Plant: A Case Study of The Tapioca Mill in West Tulang Bawang, Lampung
type: item
description: The tapioca processing industry in Indonesia holds massive potential for generating renewable energy through Biogas Power Plants. However, the high toxic and corrosive Hydrogen Sulfide gas content necessitates a reliable purification system. This study aims to design and validate the mechanical integrity and process feasibility of a Fiber Reinforced Polymer (FRP) composite Biological Scrubber tank. The case study was conducted at a facility with a 2000 Nm³/h gas flow capacity, utilizing a tank measuring 3.6 m in diameter and 15 m in height. A comprehensive evaluation was performed using an analytical approach and Python-based computational simulations referencing the ASME RTP-1-2023 standard for FRP pressure vessels. The tank design was optimized using a step-tapered wall configuration to withstand combined hydrostatic, internal pressure (0.05 kg/cm²), wind (22.68 km/h), and Zone 2 seismic loads. Volumetric analysis indicates the reactor dimensions provide an Empty Bed Residence Time of 275 seconds and a superficial gas velocity of 0.055 m/s, optimally maintaining the metabolic stability of the desulfurizing bacteria. Mechanically, the step-tapered wall thickness optimization (20 mm at the base to 10.5 mm at the top) achieved 25% material savings while maintaining a Safety Factor > 10, ensuring the design fully meets strict operational safety standards.
subject: Articles
  topic: section
subject: FRP Pressure Vessels
  topic: keywords
subject: Biogas Power Plant
  topic: keywords
subject: H2S Removal,
  topic: keywords
subject: ASME RTP-1
  topic: keywords
subject: Scrubber Tank
  topic: keywords
creator: Fahrur Riza Priyana
creator: Muhammad Fikri
creator: Eko Wahyu Saputra
creator: Rizal Adi Saputra
rights: Copyright (c) 2026 Journal of Innovation and Technology
date: 2026-04-30
publication date: 2026-04-30
starting page: 1
ending page: 10

Advanced Failure Analysis of Hydraulic Systems in Volvo Articulated Haulers at Coal Mining Sites: Investigating Steering Cylinder Seal Failure and Brake Accumulator Degradation
type: item
description: The condition of hydraulic systems is critical to the productivity and safety of heavy equipment in coal mining operations. This study analyzes Hydraulic Systems in Volvo Articulated Haulers at coal mining sites in South Sumatra, Indonesia. Progressive failure of the steering cylinder seal on a Volvo ART A40F, manifested as hydraulic oil leakage and a drop in measured steering pressure from the standard 250 bar to 203 bar; and degradation of the brake accumulator unit on a Volvo ART A40G, causing a low brake pressure warning and a drop in pressure from the normal range of 145-245 bar to 118 bar. Both failures were caused by wear-induced mechanisms exacerbated by the harsh mining environment fine particle contamination, high thermal cycling, and continuous duty cycles. For the A40F, post-repair inspection revealed that the scraper / dust seal had thinned from 7.8 mm (new) to 6.1 mm, allowing the ingress of particles that accelerated piston rod seal wear. For the A40G, three of the seven accumulators had lost their hydraulic oil connections, reducing nitrogen precharge and eliminating pressure reserve capacity. Corrective interventions of seal kit replacement on the A40F and accumulator replacement on the A40G restored operating pressures to 250 bar and 247 bar, respectively. Maintenance records from 2024-2026 revealed that accumulator failures occurred repeatedly each year per unit, indicating inadequate inspection intervals. These findings support a transition to a condition-based maintenance strategy for both system types.
subject: Articles
  topic: section
subject: Volvo Articulated Hauler
  topic: keywords
subject: Steering Cylinder Seal
  topic: keywords
subject: Brake Accumulator
  topic: keywords
subject: Coal Mining Maintenance
  topic: keywords
creator: Syaipudin Anwar
creator: Rizal Adi Saputra
creator: Praise Prasetyo
creator: Kristanto
rights: Copyright (c) 2026 Journal of Innovation and Technology
date: 2026-04-30
publication date: 2026-04-30
starting page: 35
ending page: 45

The Effect of Welding Current on the Mechanical Properties of AISI 1040 Steel and AISI 1020 Steel in Bimetal Welding Using the Shielded Metal Arc Welding Method with AWS E 7016 Electrodes
type: item
description: This article discusses bimetal welding between AISI 1040 steel and AISI 1020 steel using the Shielded Metal Arc Welding (SMAW) method with AWS E 7016 electrodes. The purpose of the study was to evaluate the quality of the welded joint, including the mechanical properties and microstructure of the bimetal welding results. The use of high-strength AISI 1040 steel and AISI 1020 steel with malleable properties aims to produce a joint that optimizes the characteristics of each material. The welding process was carried out with varying current parameters to determine its effect on the welding results. Testing included tensile testing, hardness testing, impact testing, and microstructure analysis. The results showed that variations in welding parameters affected the mechanical properties of the joint and the distribution of microstructures in the weld zone, heat-affected zone (HAZ), and base metal. The optimal welded joint was obtained by setting certain current parameters that produced maximum tensile strength and even hardness distribution. This study contributes to the development of bimetal welding technology, especially for applications that require a combination of mechanical properties of two types of steel.
subject: Articles
  topic: section
subject: Bimetal Welding
  topic: keywords
subject: AISI 1040 Steel
  topic: keywords
subject: AISI 1020 Steel
  topic: keywords
subject: SMAW
  topic: keywords
subject: AWS E 7016 Electrode
  topic: keywords
creator: Aditya Angga Wijaya
creator: Tarkono
creator: Irza Sukmana
creator: Rizal Nazarrudin
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-10-22
publication date: 2025-10-22
starting page: 41
ending page: 47

The Effect of Welding Speed on the Welding Quality AISI 1020 and AISI 1050 Steel Using Shielded Metal Arc Welding Technology
type: item
description: Material joining techniques are divided into two categories: similar joints and dissimilar joints. The difference in thermal cycles experienced by each material is the reason why dissimilar welding is more challenging than similar welding. The welding process that joins two materials with different properties is commonly used to improve effectiveness and efficiency in production, as well as to improve product quality. This trend has become popular in the manufacturing industry, including in the manufacture of tailor welded blanks, transportation vehicle frames such as aircraft, trains, and cars, as well as in the manufacture of public and private vehicle accessories such as aircraft panels and exhausts. The materials currently widely used in exploration are stainless steel combined with carbon steel, as well as a mixture of stainless steel and low carbon steel, which is quite challenging to weld but offers the advantages of higher strength, corrosion resistance, and lighter weight. This challenge can be overcome through liquid welding methods, one of which is the "SMAW (Shielded Metal Arc Welding)" technique. This study used variations in welding time at 5, 10, and 10 m/minute. Quality testing was carried out using visual tests, tensile tests, and impact tests, using AISI 1020 steel and AISI 1050 steel. Based on the test results, there was a significant difference in that the welds appeared to be shinier. The tensile strength results were in the form of average strain values for each specimen, which were 0.0705 mm, 0.0487 mm, and 0.1074 mm. The impact test results, which compared toughness values using a predetermined welding time variation of 16.5 joules, showed an average toughness value of 0.1948 J/mm².
subject: Articles
  topic: section
subject: SMAW welding
  topic: keywords
subject: AISI 1020 steel
  topic: keywords
subject: AISI 1050 steel
  topic: keywords
subject: red dye penetrant test
  topic: keywords
subject: Tensile and Impact test
  topic: keywords
creator: Syaipudin Anwar
creator: Nanda Tri Wiranata Nanda
creator: Tarkono Tarkono
creator: Sugiyanto Sugiyanto
creator: A Yudi Eka Risano Yudi
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-10-22
publication date: 2025-10-22
starting page: 38
ending page: 40

Ergonomic Analysis of a Modified Dishwashing Facility in a Medium Scale Restaurant
type: item
description: Dishwashing is a crucial stage in the production process of restaurants, where ergonomic aspects for the operators play an important role in determining overall productivity. To support the performance improvement of small and medium enterprises (SMEs), this study conducted an experimental analysis to evaluate the ergonomic level of dishwashing activities in a restaurant located in Bandar Lampung. Prior to the assessment, modifications had been made to the design of the dishwashing facility. The evaluation was carried out using the Ovako Work Posture Analysis System (OWAS), energy consumption analysis, the Nordic Body Map (NBM) questionnaire, and an investigation of the relationship between ergonomic levels and operator productivity. The results revealed that the modified design significantly improved the ergonomic quality of the facility and led to a measurable increase in operator productivity. These findings demonstrate that workplace design improvements in SMEs can effectively enhance both ergonomics and business performance.
subject: Articles
  topic: section
subject: design for ergonomic
  topic: keywords
subject: productivity
  topic: keywords
subject: Indonesian SME
  topic: keywords
creator: Achmad Yahya Teguh Panuju
creator: Sandi Kurniawan
creator: Arinal Hamni
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-10-20
publication date: 2025-10-20
starting page: 48
ending page: 53

The Effect of Fracture Strength of Composite Materials with the Addition of Pineapple Leaf Fiber
type: item
description: Composite materials with unsaturated polyester matrix reinforced with natural fibres were developed to make biodegradable composite materials so that the waste does not damage the environment. Regarding mechanical strength, natural fibre-based composites are still lower in mechanical strength than composite materials with synthetic fibre reinforcement. These weaknesses include easy cracking when hit because they are brittle and have a small plastic deformation area. Some actions that will be carried out in this study are the addition of pineapple fibres with unsaturated polyesters that can form composites that are resistant to cracking. The addition of pineapple fibers to unsaturated polyesters up to 20% can have the highest fracture strength with a value of K1C = 1.733 MPa.m0.5, whereas pure unsaturated polyester without a mixture of pineapple fibres only has a fracture strength of K1C = 0.779 MPa.m0.5. From the results of the study, the addition of pineapple fibres can increase the fracture strength of polyester materials by 222.47%.
subject: Articles
  topic: section
creator: Nusyirwan Adnan
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-10-23
publication date: 2025-10-23
starting page: 54
ending page: 59

Implementation of the Biophilic Design Concept to Co-working Space in Bandar Lampung
type: item
description: The current industrial revolution 4.0 has a major impact on the Indonesian economy, one of which is the emergence of startup business models. The current millennial generation is required to be able to innovate, collaborate and create new discoveries. The need for co-working space is important because it can accommodate these activities with its flexible and collaborative nature. Working indoors continuously for long periods of time can cause nature deficit disorders or reduce human well-being and can cause stress due to lack of interaction with nature. Biophilic design is a solution to reduce stress levels in workers because it has a positive impact on health. The basic concept of biophilic is to connect humans and nature in architecture. This study used descriptive qualitative method. Data collection and data analysis techniques include observation, documentation and literature study through scientific references. The design of the co-working space in Bandar Lampung aims to provide a new space for the young generation to be creative, collaborate and create new discoveries supported by a biophilic approach to reduce user stress levels and support the creative process of innovation. The basic concept of biophilic is applied well in buildings by implementing 14 biophilic design patterns.
subject: Articles
  topic: section
subject: Startup
  topic: keywords
subject: Work stress
  topic: keywords
subject: Co-working Space
  topic: keywords
subject: Biophilic Design
  topic: keywords
creator: Aprillia Yona Lestary
creator: Panji Kurniawan
creator: Dona Jhonnata
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-04-30
publication date: 2025-04-30
starting page: 29
ending page: 37

Statistical Performance Analysis of a 20 kV Circuit Breaker at Bangka Substation
type: item
description: This study evaluates the performance of 20 kV circuit breakers by analyzing insulation resistance, contact resistance, contact synchronization, leakage current, and power loss. The insulation resistance analysis indicated that phases R and S did not show significant improvement after maintenance, with significance values of 0.065 and 0.166, respectively, while phase T exhibited a significant improvement with a significance value of 0.048. Contact resistance measurements revealed no statistically significant reductions after maintenance, with significance values of 0.209, 0.243, and 0.155 for phases R, S, and T, respectively. Additionally, contact synchronization in the open condition did not experience significant variations, whereas in the closed condition, all phases showed significant declines in synchronization after maintenance, with significance values of 0.003, 0.013, and 0.007. Leakage current analysis at a 20 kV phase-to-ground voltage showed that the highest recorded leakage current was 0.297 mA in the Eks Sumberejo feeder, significantly below the 20 mA threshold. Power loss calculations identified the highest power dissipation in the Depati Hamzah feeder at 69.87 W, with the lowest in the Eks Transmart feeder at 0.376 W. Energy loss assessment further showed the Depati Hamzah feeder experiencing the highest loss at 48.317 kWh, while the Eks Transmart feeder had the lowest at 0.278 kWh. These findings underscore the importance of routine monitoring and targeted maintenance to enhance circuit breaker reliability, optimize operational efficiency, and minimize energy losses in high-voltage electrical networks.
subject: Articles
  topic: section
creator: Tiara Dela Putri
creator: M. Yonggi Puriza
creator: Asmar Asmar
creator: Wahri Sunanda
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-30
publication date: 2025-06-30
starting page: 1
ending page: 6

Vehicle Safety System Integrated with GSM Network (Global System for Mobile Communications) on Vehicle Ignition System
type: item
description: This research aims to design and create a sms-based motor vehicle security system with an ATMega 8535 microcontroller. This research utilizes hand phone technology and microcontroller. Making this tool has an economical price to secure motorized vehicles. Important prototypes in making this tool are the ATMega 8535 microcontroller, GSM Modem and HP. In making this tool the first thing to make is to make a microcontroller program for the controller. Making this program uses CV Avr soft ware (Code Vision Avr). After the program is finished, the program is downloaded to the microcontroller. Control is done by the microcontroller when it gets input. The result of this research is to get a vehicle security system that is integrated by the ignition system on a motorcycle. The process of securing a motorized vehicle when it is stolen is, the security system will send sms information that the motorcycle is stolen, the alarm sounds and the ignition system is cut off. To turn off the alarm and start the motorcycle, the owner sends an SMS with the format *ALOF# to the security system and starts the motorcycle normally (Pull the front brake three times then position the key to ON mode).
subject: Articles
  topic: section
subject: Microcontroller
  topic: keywords
subject: ATMega 8535
  topic: keywords
subject: CV Avr
  topic: keywords
subject: GSM modem
  topic: keywords
subject: Alarm
  topic: keywords
creator: Akhmad Riszal
creator: Suryadiwansa Harun
creator: Yanuar Burhanuddin
creator: Martinus
creator: Arinal Hamni
creator: Rizal Adi Saputra
creator: Rizal Nazarrudin
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-30
publication date: 2025-06-30
starting page: 21
ending page: 28

Investigation of Electrical Voltage Influence on Thermoelectric Cooler (TEC) Performance in a Stacked Cooling Enclosure
type: item
description: The Thermoelectric Cooler (TEC) is an environmentally friendly solid-state cooling technology with wide application potential. This study aims to analyze the effect of voltage variation on the thermal performance of a TEC-based cooling system applied to a prototype cooling box. The methodology involved designing a system with eight symmetrically installed TEC units, tested at five voltage levels: 16 V, 18 V, 20 V, 22 V, and 24 V. Evaluated parameters included cold and hot side temperatures, heat absorbed (Qc), and Coefficient of Performance (COP). Experimental results revealed that increasing voltage up to 22 V significantly enhanced system efficiency, with the highest COP of 0.25 and maximum Qc of 5.24 W. However, at 24 V, performance declined due to excessive heat accumulation on the hot side of the TEC, exceeding heat dissipation capacity. In conclusion, an optimal input voltage of 22 V was identified to yield the most efficient cooling performance. These findings support the applicability of TEC technology for compact and sustainable cooling systems.
subject: Articles
  topic: section
subject: Thermoelectric Cooler, electrical voltage, thermal performance, Coefficient of Performance
  topic: keywords
creator: Sabiqunassabiqun
creator: Alfian Ady Saputra
creator: Eko Wahyu Saputra
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-30
publication date: 2025-06-30
starting page: 7
ending page: 11

Implementation of Exploratory Data Analysis (EDA) in Predicting Customer Churn Decision Levels Using Naive Bayes Algorithm
type: item
description: This study aims to explore the use of Exploratory Data Analysis (EDA) for predicting customer churn decisions at service provider companies. Using the Naive Bayes algorithm within the RapidMiner environment, the research analyzes customer behavior patterns to determine key influencing factors. The process involves structured data preprocessing, visualization, and model evaluation through accuracy, precision, recall, and F1-score metrics. The results show that EDA coupled with the Naive Bayes model provides valuable insights and reaches an accuracy of over 82%, making it a reliable decision-support tool for customer retention strategies. This study contributes to data-driven approaches in customer relationship management.
subject: Articles
  topic: section
subject: Exploratory Data Analysis
  topic: keywords
subject: Customer Churn
  topic: keywords
subject: Naive Bayes
  topic: keywords
subject: Rapid Miner
  topic: keywords
subject: Predictive Analytics
  topic: keywords
creator: Muhammad naufal hermawan
rights: Copyright (c) 2026 Journal of Innovation and Technology
date: 2025-10-30
publication date: 2025-10-30
starting page: 60
ending page: 62

The Effect of Matos Soil Stabilizer Addition to Fly Ash Stabilized Road Foundation Layer on the Index Properties of Soil
type: item
description: In pavement construction, it consists of subgrade, foundation layer and overburden. In working on landfill, the quality of the landfill can be improved by stabilization. Stabilization is a way to improve the properties and parameters of the soil, so that the soil is suitable or qualified to be used according to its function. One of the ways to stabilize soil is by chemical stabilization. In this research using additives such as fly ash & matos soil stabilizer. The soil samples were taken from Peniraman Quarry, Mempawah Regency. Also, the fly ash used comes from the waste of Paiton power plant, Probolinggo Regency. The tests carried out were testing the physical properties of the soil. The results obtained were then adjusted to the lower foundation layer of the road with specifications based on the 2018 General Specifications, Road and Bridge Construction Work (Revision 2). The test was carried out with a mixture of 10% fly ash and variations of matos soil stabilizer 2 - 8%, stabilization was carried out with a curing period of 0 - 14 days. From the results of the soil test, the plasticity index was found to be 14.252%. From the test results of the highest mixture variation, which is a mixture of soil + 10% fly ash + 8% matos soil stabilizer with a curing period of 14 days. The test results obtained a plasticity index of 7.295%, so it can be concluded that the higher the percentage of matos soil stabilizer used, the plasticity index value of the soil decreases and has met the requirements in the construction of the lower foundation layer of the road (B class).
subject: Articles
  topic: section
subject: Fly ash, plasticity index, sub base course, matos soil stabilizer
  topic: keywords
creator: Praditya Ardhana
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-04-30
publication date: 2024-04-30
starting page: 24
ending page: 33

Comparison Study Between the Experimental and Finite Element Analysis (FEA) on a Static Load of Magnesium AZ31B as Biodegradable Bone Plate Material
type: item
description: Biomaterials is an advanced material engineering technology that is used to help heal bone fractures or fractures. Currently, many biomaterials use materials such as titanium alloy, stainless steel, platinum, and chromium, but these materials cannot be degraded naturally so a second operation must be carried out to remove the installed biomaterial. Biomaterials are temporary in nature so when the bone returns to its original state, the biomaterial must be surgically removed. Research was conducted to obtain a design with a material that can be naturally degraded without causing toxicity. Magnesium AZ31B is a recommended candidate as a base material for degradable bone implants. Magnesium AZ31B material, it is expected to reduce or minimize the surgical removal of implant biomaterials. Bone plate geometry use plate bone dimension 150mm x 15mm x 3mm with variation 10 hole parallel and zigzag as well as with a bolt bone dimensions long 40 mm with pitch 1mm diameter 5mm. Test bending was conducted with ASTM E290-14 showing that on plate bone hole parallel with burden maximum 33,419 KN with a deformation maximum of 30.89 mm whereas for plate bone hole zig zag with the burden maximum 32,863 KN with deformation maximum big as 29.97 mm. From the study experimental that plate bone hole parallel have nature mechanic more tall compared with plate bone hole zig Zag although with the difference which is not significant. Whereas on simulation FEA plate bone hole parallel with burden 33,419 KN get results total deformation as big as 31,481 mm with von Mises stress 15,337 MPa, then for plate bone hole zig Zag with burden 32,863 KN with total deformation 32.466 mm and von Mises stress as big as 33,948 MPa. In testing by experiment and simulation FEA plate bone hole parallel get difference around 0.591 mm or 0.94% whereas for plate bone hole zig Zag in testing by experiment and simulation get difference around 2,893 mm or 4.60%.
subject: Articles
  topic: section
subject: Magnesium AZ31B
  topic: keywords
subject: bone plate
  topic: keywords
subject: three point bending
  topic: keywords
subject: FEA
  topic: keywords
creator: Mahruri Arif Wicaksono
creator: Irza Sukmana
creator: Akhmad Riszal
creator: Yusup Hendronursito
creator: Rizal Nazarrudin
creator: Muhammad Haviz
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-10-30
publication date: 2024-10-30
starting page: 62
ending page: 68

Utilization of Spent Bleaching Earth Waste in Soil-Lime Stabilization for Road Body Foundation Layers Based on Index Properties
type: item
description: Spent Bleaching Earth (SBE) is a mixed material between bleaching earth and organic compounds derived from bleached crude oil. In addition, spent bleaching earth still contains a component of phosphoric acid. This phosphoric acid comes from the degumming process which is brought to the bleaching process by oil. According to Government Regulation Number 22/21 concerning Implementation of Environmental Management and Protection, this spent bleaching earth is classified as non-B3 waste depth. Chemical stabilization is by mixing chemicals into the soil material which causes a chemical reaction to occur between the mixing material and the soil which will produce new materials that have better quality. From the results of the physical properties experiment, it was found that the mixture with the optimum value for soil-lime stabilization was 10% SBE.
subject: Articles
  topic: section
subject: Soil Stabilization
  topic: keywords
subject: Spent Bleaching Earth
  topic: keywords
subject: Index Properties
  topic: keywords
subject: Lime
  topic: keywords
creator: Syarif Razhik Ghazali
creator: Aprianto
creator: R M Rustamaji
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-10-30
publication date: 2024-10-30
starting page: 55
ending page: 61

Effect of Sintering Temperature on The Adhesion Quality of Hydroxyapatite on Porous Tantalum for Cancellous Bone Implant Application
type: item
description: Porous tantalum has been recently recognized as a conventional orthopedic implant for bone substitute applications besides stainless steel, cobalt-chromium, titanium, and other metallic alloys. Porous tantalum has excellent mechanical and osseointegration properties similar to cancellous bone structure. To optimize the utilization, the dip coating technique was applied to coat porous tantalum with hydroxyapatite (HA). X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques investigate the coating characterization. HA is a bioceramic material that used for bone substitutes due to its chemical and structural similarity to bone minerals. Coated porous tantalum requires the sintering process of porous tantalum to adhere to HA. During the sintering process, various temperatures (650°C, 750°C, 850°C, 950°C, and 1100°C) were used to determine the optimum temperature for porous tantalum coated with HA. The heating rate is 1°C/1 min and the holding time is 60 minutes. The result shows that the optimum temperature of HA-coated porous tantalum is at 850°C. The morphology structure of the HA-coated porous tantalum shows that the adhesion between porous tantalum and HA is in good condition. The element in the HA-coated porous tantalum shows that the existence of HA is high.
subject: Articles
  topic: section
subject: Hydroxyapatite
  topic: keywords
subject: Porous Tantalum
  topic: keywords
subject: Sintering Temperature
  topic: keywords
subject: Cancellous Bone
  topic: keywords
creator: Nur Syazwani Binti Ab Rahman
creator: Irza Sukmana
creator: Joy R P Djuansjah
creator: Tarkono
creator: Agus Sugiri
creator: Rizal Adi Saputra
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-10-30
publication date: 2024-10-30
starting page: 48
ending page: 54

Analysis of PM2.5 Level Related to Vehicle Activities in Campus Parking Lot
type: item
description: The number of vehicle usage, especially motorcycles, in Indonesia has significantly increased in the past 10 years, particularly among young people. This has had an impact on the declining air quality in public places, including on campus grounds. PM2.5, as one of the hazardous pollutants to health, needs to be given special attention regarding its dispersion concentration in areas heavily frequented by the public, such as parking lots on campus. This study analyzes the level of PM2.5 concentration in the campus parking lots at Universitas Lampung, with the aim of observing the pattern of PM2.5 pollution in the campus area, considering the increasing number of motorcycles entering the campus every year. The measurement of PM2.5 levels was conducted using a light scattering sensor in two parking lots with different microenvironments, and then its correlation with motorcycle activities at each location was analyzed using simple regression. Based on statistical analysis, it was found that the differences in microenvironments affect PM2.5 levels significantly. The number of motorcycle activities also has a positive correlation with the level of PM2.5, where the average PM2.5 concentration recorded has exceeded the threshold set by the government, which is 15 µg/m3 per day. However, the effect of the microenvironment in this study is stronger than the number of vehicles. Therefore, in the future, appropriate policies and strategies are needed to reduce PM2.5 concentrations in public areas, especially on campuses, to prevent the associated risks of the pollution.
subject: Articles
  topic: section
subject: PM2.5 Concentration
  topic: keywords
subject: Air Pollution
  topic: keywords
subject: Campus Parking Lot
  topic: keywords
creator: Achmad Y T Panuju
creator: M Dyan Susila
creator: Endro P Wahono
creator: Sri R Sulistiyanti
rights: Copyright (c) 2024 Journal of Innovation and Technology
date: 2024-10-30
publication date: 2024-10-30
starting page: 40
ending page: 47

The Effect of Matos Soil Stabilizer on Mechanical Properties of Soil Stabilized with Cement
type: item
description: In pavement construction, it consists of subgrade, foundation layer and overburden. In working on landfill, the quality of the landfill can be improved by stabilization. Stabilization is a way to improve the properties and parameters of the soil, so that the soil is suitable or qualified to be used according to its function. One of the ways to stabilize soil is by chemical stabilization. In this research using additives such as fly ash & matos soil stabilizer. The soil samples were taken from Peniraman Quarry, Mempawah Regency. Also, the fly ash used comes from the waste of Paiton power plant, Probolinggo Regency. The tests carried out were testing the physical properties of the soil. The results obtained were then adjusted to the lower foundation layer of the road with specifications based on the 2018 General Specifications, Road and Bridge Construction Work (Revision 2). The test was carried out with a mixture of 10% fly ash and variations of matos soil stabilizer 2 - 8%, stabilization was carried out with a curing period of 0 - 14 days. From the results of the soil test, the plasticity index was found to be 14.252%. From the test results of the highest mixture variation, which is a mixture of soil + 10% fly ash + 8% matos soil stabilizer with a curing period of 14 days. The test results obtained a plasticity index of 7.295%, so it can be concluded that the higher the percentage of matos soil stabilizer used, the plasticity index value of the soil decreases and has met the requirements in the construction of the lower foundation layer of the road (B class).
subject: Articles
  topic: section
subject: Soil Stabilization
  topic: keywords
subject: Matos
  topic: keywords
subject: Soil Stabilizer
  topic: keywords
subject: Mechanical Properties
  topic: keywords
creator: Praditya Ardhana
creator: Aprianto
creator: Vivi Bachtiar
creator: R M Rustamaji
creator: Eka Priadi
rights: Copyright (c) 2024 Journal of Innovation and Technology
date: 2024-10-30
publication date: 2024-10-30
starting page: 34
ending page: 39

Evaluation of Swelling – Shrinkage of Soil Stabilized with Cement and Spent Bleaching Earth
type: item
description: This research aims to investigate the effect of using Spent Bleaching Earth (SBE) as a soil stabilizer in cement-stabilized soil. The study employs a 5% Portland Composite Cement (PCC) ratio based on the dry soil weight, with SBE as a stabilizing agent at ratios of 5%, 10%, 15%, and 20% of the Portland Composite Cement weight. Curing periods of 0 days, 7 days, and 14 days are used, with a focus on the expansion and shrinkage characteristics. The best results were obtained in a mixture with a 10% SBE variation as a soil stabilizer, under a 14-day curing period, with a plasticity index of 14.149%, Expansion (CBR Soaked) of 1.178, Expansion Pressure of 1,706 kg/cm2, and free expansion index of 13.333%. Test results indicate that mixtures with various amounts of SBE as a soil stabilizer in cement-treated soil and different curing periods can reduce soil expansion, as evidenced by decreasing values of plasticity index, Expansion (CBR Soaked), expansion pressure, and free expansion index. Therefore, it can be concluded that SBE as a soil stabilizer, along with prolonged curing, can reduce the soil's expansion and shrinkage characteristics.
subject: Articles
  topic: section
creator: Nasiruddin
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-04-30
publication date: 2024-04-30
starting page: 11
ending page: 17

The Influence of Adding Matos Soil Stabilizer to the Foundation Layer of a Road Body Stabilized Using Lime on it’s Physical Properties.
type: item
description: From the perspective of Civil Engineering, soil is a collection of minerals, organic matter, and relatively loose deposits, which are located on bedrock. The relatively weak bonds between grains can be caused by carbonates, organic matter, or oxides precipitating between the particles. The space between the particles can contain water, air, or both. The process of physical soil formation that changes rock into smaller particles, occurs due to the effects of erosion, wind, water, humans, or the destruction of soil particles due to changes in temperature or weather. Soil stabilization with lime and matos soil stabilizer is an alternative soil improvement by adding additives. Soil stabilization with lime and matos soil stabilizer as a mixture of crushed soil, lime, matos soil stabilizer, and water which is then compacted to produce a new material, where strength, deformation characteristics, resistance to water, weather, and so on can be adjusted with the need for road pavement, building and road foundations, streams, retaining walls and so on. The physical properties test used is water content (w), γ = soil volume weight (gr/cm3), specific gravity (Gs), atterberg limits, permeability, hydrometer and gradation analysis
subject: Articles
  topic: section
creator: Andro Ricardus
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-04-30
publication date: 2024-04-30
starting page: 18
ending page: 23

Intelligent Eyes on the Battlefield: Developing an AI-Vision Based Military Vehicle and Infantry Detection System
type: item
description: The importance of accurate, real-time intelligence in modern warfare is crucial, especially in reconnaissance and surveillance operations. Currently, drones are widely used for reconnaissance, but generally rely only on the operator's ability to monitor operation targets. This research is aimed at developing an AI vision assistance system to enhance the ability to detect military vehicles and infantry. The method used is computer vision trained to recognize and differentiate several military objects. The YOLO model is used to detect and distinguish objects. To improve detection capabilities, the YOLO v8 model was retrained with an additional dataset sourced from battle recordings on the battlefield. The results show a detection accuracy rate of 95% in detecting vehicles and infantry under normal visual conditions. The model from this research can be used to enhance the capabilities of reconnaissance drones and the effectiveness of monitoring operations.
subject: Articles
  topic: section
creator: Pasha Wibowo
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-04-30
publication date: 2024-04-30
starting page: 5
ending page: 10

Experimental trials to detect the lateral displacement on granular material embankment inserted geosynthetics due to the vertical loads
type: item
description: The usage of geosynthetics to improve the bearing capacity on granular material of embankment construction is worldwide familiar applied. The paper elaborates the lateral displacement of embankment inserted geosynthetics resulted vertical load on the top of embankment. This type of construction is applied like Mechanically Stabilized Earth- Retaining Wall (MSE-RW). Varied distances of inserted geosynthetics with low tensile strength on granular material of embankment for 20, 30, 40, 60 respectively cm installed on totally 140 cm-high of embankment. Each of layer is installed with varied distances with 120 cm -wide must be wrapped in order to avoid loses grains of granular material of embankment. The varied vertical surcharge at the above of embankment started with 19, 34, 49 kg respectively. The result of research indicates that number layer with inserted geosynthetics on granular material of embankment influences the lateral deflections which much more layers of geosynthetics or smaller vertical distance of geosynthetics provides smaller lateral deflection. Beside that increased vertical load implies the lateral deflection is increased.
subject: Articles
  topic: section
creator: Selamet Widodo
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2024-04-30
publication date: 2024-04-30
starting page: 1
ending page: 4

Integrating Blue Carbon Estimation into Mangrove-Based Coastal Protection Infrastructure Planning: A Case Study in Dompak Island, Tanjungpinang
type: item
description: Ecosystem-based coastal protection offers a strategic approach to mitigating the impacts of climate change, particularly in small island contexts. This study integrates remote sensing and geospatial analysis to estimate blue carbon stocks in the mangrove ecosystems of Dompak Island, Tanjungpinang, using Google Earth Engine (GEE) and Sentinel-2 satellite imagery. Through the application of the Normalized Difference Vegetation Index (NDVI) and an empirical model for Above Ground Biomass (AGB), spatial carbon stock distributions were generated and classified into three functional zones: conservation, restoration, and critical protection. Results reveal that areas with moderate vegetation exhibit the highest carbon stock (32.00 tons/ha), suggesting ongoing biomass accumulation. This spatial analysis informs a zoning framework that supports ecosystem-based infrastructure planning. The integration of carbon mapping with adaptive civil engineering strategies demonstrates a scalable model for climate-resilient coastal development in vulnerable regions.
subject: Articles
  topic: section
subject: Blue Carbon
  topic: keywords
subject: Mangroves
  topic: keywords
subject: Google Earth Engine
  topic: keywords
subject: Coastal Protection
  topic: keywords
subject: Natural Infrastructure
  topic: keywords
creator: Dian Kharisma Dewi
creator: Sapta Nugraha
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-30
publication date: 2025-06-30
starting page: 12
ending page: 20

New Viewpoint Era of Weather Monitoring: Arduino Based Portable Weather Station Design
type: item
description: Weather changes play a crucial role in key sectors in Indonesia, such as agriculture and fisheries. However, limited weather data in all regions is an obstacle. This research proposes an innovative Arduino-based weather monitoring instrument that is flexible, economical and increases data availability in Indonesia. The ergonomic and flexible design of the Portable Weather Station allows mobility without dependence on building structures. With real-time monitoring using sensors for temperature, humidity, air pressure, wind speed and wind direction, this tool provides comprehensive information. Field testing shows good operation. The diversity of sensor parameters and efficient design make the Portable Weather Station innovative. Optimizing energy use and integration of advanced technologies, such as remote monitoring and cloud data processing, are recommended. The benefits involve easy and accurate access to weather information, supporting vital sectors. With continuous monitoring and evaluation, the Portable Weather Station has the potential to be an effective solution in dynamic weather monitoring, advancing sectors such as agriculture, fisheries and environmental policy, and creating communities that are more resilient to climate and economic change.
subject: Articles
  topic: section
subject: Weather Technology
  topic: keywords
subject: Weather Monitoring Innovation
  topic: keywords
subject: Weather Change
  topic: keywords
subject: Sustainable Design
  topic: keywords
creator: Fischella Andrew Laurent
creator: Tito Suryawijaya
creator: Kusni Ingsih
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-07
publication date: 2025-06-07
starting page: 50
ending page: 56

Study of Deformation Behavior of Retaining Walls at Sepakat Ii Parallel Road Project in Pontianak City
type: item
description: The development of urban planning and infrastructure such as roads, buildings, bridges, ports has increased in recent years in Pontianak City. One of them is the construction of Jalan Parallel Sepakat II which was carried out in early 2022, connecting Jalan Sepakat II to the Tanjungpura University Campus Complex. In the case in the field, the previously compacted embankment has decreased, so backfilling is carried out to adjust the planned elevation. Due to the unsafe existing condition factor, improvements were made that were supported by retaining wall modeling. In addition to the retaining wall modeling, the current planning in the field is also stabilized by using a pile and geotextile, in order to increase the bearing capacity of the soil and can minimize the decrease or deformation that occurs at the research location. In the process of analyzing the retaining wall, analysis is also carried out with the Plaxis Proffesional 8.6 program. The results obtained in the form of deformation numbers and safety factor results. From the conclusion, the factor of safety is obtained which is not safe so that it is feasible to be reinforced. However, some adjustments are needed to the design plan so that it can function properly in accordance with the intent and purpose of the reinforcement.
subject: Articles
  topic: section
subject: retaining wall
  topic: keywords
subject: deformation
  topic: keywords
subject: Plaxis Proffesional 8.6
  topic: keywords
subject: factor of safety
  topic: keywords
creator: Novita Januarti Siregar Siregar
creator: Priadi Eka
creator: Aprianto Aprianto
creator: R M Rustamaji
creator: Vivi Bachtiar
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-07
publication date: 2025-06-07
starting page: 44
ending page: 49

Weather Forecast for Bandar Lampung City Using Random Forest and C4.5
type: item
description: Weather forecasts are important information for various agencies and the wider community. Weather forecasts are usually used to benefit various sectors such as transportation, tourism, plantations and others. This study aims to create a new model regarding weather forecasting using the random forest and C4.5 algorithms using the WEKA application. The dataset uses data from the Panjang Maritime Meteorological Station with 365 days of data and six attributes: rain intensity, average temperature, humidity, rainfall, sunshine duration and average wind speed. The results obtained from this study between the random forest algorithm and C4.5, namely cross-validation trials fold 5, 10 and 15 random forests, have better results than C4.5 by using the MAE and RMSE evaluation values, then in testing with a percentage split 25% on the evaluation of the MAE value is better at C4.5. Still, the random forest has better results for all experiments evaluating the RMSE value and two evaluations of the MAE value.
subject: Articles
  topic: section
subject: weather forecast
  topic: keywords
subject: random forest
  topic: keywords
subject: C4.5
  topic: keywords
subject: WEKA
  topic: keywords
creator: Rahma Ferika Shaumi
creator: Sri Ratna Sulistiyanti
creator: F X Arinto Setyawan
creator: Helmy Fitriawan
creator: Sri Purwiyanti
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-07
publication date: 2025-06-07
starting page: 62
ending page: 66

Simulation Study of Small-Scale Electricity Generation Plant Utilizing Flue Gas of Solid Garbage Waste Incineration as Energy Source
type: item
description: This study aims to get an overview of the operational parameters of a small-scale electrical generation plant that utilizes thermal energy included in the flue gases of garbage waste incineration. The organic Rankine cycle (ORC) thermodynamic system was performed to evaluate this system. The organic fluid was used as a heat transfer medium instead of water because it has a low boiling point so it does not require a lot of thermal energy to generate small-scale electric power. Hexane was used as the working fluid and Aspen Hysys was used as a tool to perform simulations. The plant is optimized through the operating temperature, working fluid flow rate, and pressure to obtain electrical output power that can be obtained. The simulation results show that flue gas at a temperature range of 300 to 350 0C can produce electric power in the ranges of 7.84 to 128.6 kW at a working pressure ranges of 2.5 to 7.5 bar, and working fluid flow rate of 3.600 to 10.100 kg/h
subject: Articles
  topic: section
subject: Garbage waste
  topic: keywords
subject: Incineration
  topic: keywords
subject: Thermal energy
  topic: keywords
subject: ORC
  topic: keywords
creator: Janter Pangaduan Simanjuntak
creator: Binsar Maruli Tua Pakpahan
rights: Copyright (c) 2025 Journal of Innovation and Technology
date: 2025-06-07
publication date: 2025-06-07
starting page: 57
ending page: 61

Escalation of Visual Street Furniture Accentuation at Public Corridor of Baiturrahman Mosque in Putroe Phang Park
type: item
description: The public corridor is the basic character of the road which represents a linear movement space, becomes a provision for circulation. The road corridor as a linear space is not only a circulation space, but as part of a community activity space that has the potential to increase and develop. The formulation of the problem in this study is how to identify street furniture in public corridors, visual accentuation of street furniture in public corridors and escalation of visual accentuation of street furniture in public corridors. Aims to find out how the escalation of the visual accentuation of street furniture. This study uses a quantitative method with a descriptive approach. The results obtained from this study are that the majority of respondents to street furniture that are more attractive and prominent are decorative lights. However, street furniture that doesn't stand out is the sidewalk. Things that must be escalated are sidewalks and facilities with pedestrian paths. To create a good pedestrian path, it must have complete, safe and comfortable criteria.
subject: Articles
  topic: section
subject: corridor
  topic: keywords
subject: escalation
  topic: keywords
subject: accentuation
  topic: keywords
subject: visual
  topic: keywords
subject: street furniture
  topic: keywords
creator: Rinal Mirsa
creator: Muhammad Muhammad
creator: Mega Aulia
creator: Yenni Novianti
rights: Copyright (c) 2023 Journal of Innovation and Technology
date: 2023-04-30
publication date: 2023-04-30
starting page: 30
ending page: 37
doi: 10.31629/jit.v4i1.5635