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Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi
Published by Universitas Pancasila
ISSN : 26551861     EISSN : 27162923     DOI : https://doi.org/10.35814
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering
Jurnal ini mempublikasikan artikel ilmiah berbasis penelitian, studi kasus, articles review, rekayasa dan inovasi yang mencakup teoritis maupun praktis serta pengembangannya. Topik artikel ilmiah yang dimuat ASIIMETRIK mencakup bidang Arsitektur, Teknik Sipil, Teknik Industri, Teknik Informatika, Teknik Mesin dan Teknik Elektro.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 22 Documents
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Search results for , issue "Volume 8 Number 1 (2026)" : 22 Documents clear
Enhancing Post-Pandemic Customer Experience: Building a Customer Journey Map for Shopping Malls Ronald Sukwadi; Riana Magdalena Silitonga; Yulivyani; Arum Park; Yung-Tsan Jou
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.7380

Abstract

The COVID-19 pandemic has significantly impacted the retail industry, particularly shopping malls, which have experienced a 30% to 40% decline in customer footfall in the first quarter of 2021 compared to previous years. Despite the growing body of research on retail recovery, there remains a gap in understanding specific customer sentiments and experiences within mall environments during this period. This study aims to address this gap by analyzing customer feedback extracted from Google reviews to identify key attributes influencing the shopping experience. The research employs text-mining techniques to convert unstructured data into structured formats, eliminating irrelevant words and concepts. Following data cleaning, the Naïve Bayes Classifier method is utilized to analyze the sentiments, achieving an accuracy of around 92.86%. The findings will be visualized through word clouds and bar charts to highlight the top ten positive and negative sentiments expressed by customers. Ultimately, this research contributes to enhancing the customer experience at shopping malls by collaborating with relevant stakeholders to create a comprehensive Customer Journey Map based on the analyzed data. This map will serve as a strategic tool for mall management to implement targeted improvements and foster a more engaging shopping environment.
Evaluating the Role of Personality in Task Performance Across Varying Mental Workload Levels Wiediartini; Udisubakti Ciptomulyono; Ratna Sari Dewi
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.8651

Abstract

Variations in task performance under different cognitive demands are often interpreted as indicating mental workload. Prior research has identified a link between personality and task performance. This study investigates whether personality traits influence performance under varying levels of mental workload in working memory tasks. Personality traits were assessed using the Eysenck Personality Inventory. Participants completed n-back tasks at three levels of difficulty to induce different levels of mental workload. The findings reveal significant differences in response times between extroverts and introverts across all task difficulties (p < 0.05), with introverts responding more quickly. A significant difference between neurotic and stable individuals emerged only at the medium difficulty level (p < 0.05), with stable individuals performing faster. Additionally, response times varied significantly across personality quadrants, with introvert-neurotic individuals showing faster responses at both low and high difficulty levels.
Performance Analysis of Single Cylinder Diesel Engine with 2EHN Cetane Number Enhancer on Biodiesel Kristofer Severiano Dinata; Steven Darmawan; Abrar Riza
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.8905

Abstract

Diesel engines remain a critical technology across multiple sectors, including transportation, industry, marine, and agriculture, due to their well-known benefits such as high fuel efficiency, robust durability, and superior torque output. Even as electric vehicle technology rapidly advances, diesel engines continue to be utilized in demanding applications that require reliable, high-power performance under harsh conditions. This enduring relevance stems from their higher thermal efficiency and remarkable ability to function in extreme environments. However, diesel fuel differs from petrol in its combustion characteristics, notably having a lower combustion rate. This rate is measured by the cetane number, with higher cetane values indicating better combustion quality. To optimize engine performance, especially when using lower-cetane diesel fuel, additives are often used to increase the cetane number. This study explores the effects of combining 2-ethylhexyl nitrate, a cetane number enhancer, with Pertamina’s biodiesel product, bio solar. Using a single-cylinder diesel engine and a prony brake for testing, the study found that a 1:100 ratio of CNE to fuel delivered the best results among all mixtures. This blend achieved the highest thermal efficiency at 30.23% and recorded the lowest brake specific fuel consumption at 7.78265E-05 kg/kWh.
Performance Analysis of Single Cylinder Diesel Engine on Biodiesel Fuel Temperature Variation Erwin Pratama; Abrar Riza; Steven Darmawan
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.8908

Abstract

The use of biodiesel or bio solar fuel continues to grow in line with the increasing awareness of renewable energy and environmental concerns. However, the relatively high viscosity of bio solar fuel can affect the performance of diesel engines. This study aims to analyze the effects of fuel temperature variation using a heater on the performance of diesel engines. The research method employed was experimental testing on a single cylinder Jiangdong 170F diesel engine with fuel heating set at temperatures 40oC, 50oC, 60oC, and 70oC. The parameters analyzed include power, torque, fuel flow rate, thermal efficiency, and Brake Specific Fuel Consumption. The test results show that at a temperature of 50oC, the engine produced the highest power and torque at a rotational speed of 2600 rpm with a torque of 6.2 Nm and power output of 1.68 kW. At temperatures of 70oC the highest thermal efficiency was observed along with reductions in fuel consumption and BSFC at the same engine speed, yielding a thermal efficiency of 34.04%, a fuel consumption rate of 1.128×10-5 kg/s and a BSFC of 6.912×10-5 g/kWh. These results suggest that a temperature of 50oC is recommended for achieving high power and torque at high speeds, while temperature 70oC is recommended for attaining high thermal efficiency and lower fuel consumption at high engine speeds.
Is Transit-Oriented Development (TOD) Project Financially Feasible? A Case Study from Emerging Economies Herawati Zetha Rahman; Imam Hagni Puspito; I Nyoman Teguh; Najwa; Caroline Krisnadewi
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.8973

Abstract

Transit-Oriented Development is a crucial strategy for addressing urban sprawl and improving mobility, particularly in rapidly urbanizing regions like Indonesia. Transit-Oriented Development integrates high-density, mixed-use developments with public transportation infrastructure, offering sustainable urban growth solutions. However, despite its benefits, the financial feasibility of Transit-Oriented Development in emerging economies remains under-explored. This study assesses the financial viability of a Transit-Oriented Development project in Tangerang, Greater Jakarta, focusing on key financial indicators such as Capital Expenditure, Operational Expenditure, Internal Rate of Return, and Net Present Value. The study uses financial modeling, analyzing data from the project's feasibility reports and investment summaries. The results show positive Internal Rate of Return, and Net Present Value, indicating financial viability under base case assumptions. However, the analysis reveals sensitivity to changes in Capital Expenditure and revenue assumptions, with increased Capital Expenditure reducing profitability and extending the payback period. This research fills the gap in Transit-Oriented Development financial feasibility studies in developing economies, providing valuable insights for similar projects in Southeast Asia and beyond. The findings underscore the importance of effective financial planning and risk management in ensuring the long-term success and sustainability of Transit-Oriented Development projects, highlighting the need for strong public-private partnerships to mitigate financial risks.
Development of a Platform Supply Vessel: Design, Resistance Assessment, and Prototype Fabrication for Offshore Operations in Natuna, Indonesia Fathin Muhammad Mahdhudhu; Fakhri Akbar Ayub; Muhammad Akmal Apriansyah Efendy; Muhammad Ivan Kurniawan; Choirul Anam; Fathan Mubina Denu; Nabillah Jasmine Anugrahputri
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.8994

Abstract

Maritime transportation serves as a vital component of inter-island connectivity in Indonesia, particularly in supporting offshore oil and gas exploration activities. This study focuses on addressing the rarity of Platform Supply Vessel in the Natuna Islands, which are needed to support offshore operations to optimize the exploration of Natuna's abundant natural resources. The design process begins with the determination of the vessel’s principal dimensions, derived from benchmark vessel data and dimensional ratio analysis. The hull form is subsequently developed into a 3D model to produce a lines plan. Resistance analysis is conducted based on the Holtrop method, encompassing components such as frictional resistance, wave-making resistance, transom drag, and air resistance. A scaled physical model is also constructed using a non-molded hull fabrication technique to validate the design. The findings indicate that the proposed hull design satisfies the specified performance criteria and demonstrates favorable resistance characteristics. This research answers the rarity of studies on Platform Supply Vessel specifically for Natuna by contributing a comprehensive study focusing on design, fabrication, and cost analysis.
Optimizing Performance of a 4 kW BLDC Motor in Go-Kart Through Load and Speed Testing Hesti Hermawati; Darwin Rio Budi Syaka; Rani Anggrainy
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9073

Abstract

The development of electric go-karts involves overcoming challenges related to efficiency across different driving conditions. A key issue is the reduction in efficiency caused by changes in speed and the driver’s weight, both of which impact the motor’s power demands. This study focuses on examining how variations in driver weight (55 kg, 65 kg, and 75 kg) and speed (40 km/h, 50 km/h, and 60 km/h) affect the efficiency of a 4 kW BLDC motor in an electric go-kart. The research employed a quantitative experimental approach, conducting field tests on a 300-meter flat track. Key data, including voltage, current, and torque, were measured to calculate the motor’s input and output power, with efficiency determined by the power ratio formula. Analysis using a Two-Way ANOVA test revealed that both driver weight and speed, as well as their interaction, had a significant effect on efficiency (p<0.001). The highest efficiency recorded was 95.45% at 55 kg and 40 km/h, while the lowest was 62.49% at 75 kg and 60 km/h. These findings align with previous research, confirming that increased load and speed decrease efficiency. Such insights can guide strategies to optimize electric vehicle performance.
Micro-Progressive Punching (µPP): A New Method for Manufacturing Micro-Plate Implant Yani Kurniawan; Dede Lia Zariatin; Dhatu Allegra Tsumu; Bambang Sulaksono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9252

Abstract

Manufacturing of micro-plate implants using die-sinking EDM requires a processing time of about 5 hours, and there is a decrease in hardness below the raw material. To speed up the manufacturing time and prevent a decrease in material hardness, a new method is needed to manufacture micro-plate implants. This study introduces the micro-progressive punching (µPP) method to manufacture micro-plate implants. In addition, the quality of micro-plate implants such as the shape of the cutting surface and hardness produced using the µPP method were also investigated. The investigation results show that the µPP successfully made micro-plate implants with a processing time of about 10 minutes. The shape of the cutting surface has an average relatively short burr height of about 24 µm. The Hardness of the resulting micro-plate implants increased near the cutting surface with an average of about 10% of the raw material. These findings show that µPP can be employed as a substitute method for producing micro-plate implants.
Thermal Performance Analysis and Optimization of The Primary Heat Exchanger of The Airbus A320 Rahmad; Ivan Yosia Adiputra; Djoko Setyanto
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9268

Abstract

The Environmental Control System of the Airbus A320 utilizes a Primary Heat Exchanger to cool bleed air before to its entry into the Air Cycle Machine. Despite the significance of this component for optimal system functionality, research integrating operational data, thermodynamic modeling, and heat transfer studies to enhance its performance in commercial aviation remains sparse. This study investigates the thermal performance of the primary heat exchanger and develops a prediction model based on data gathered from an Airbus A320-214 during routine maintenance operations. The study encompassed 15 unique test situations, differing in bleed air temperature, pressure, and mass flow ratios. The results indicate that the heat exchanger attains a thermal effectiveness of 0.68 to 0.74, with an average heat transfer rate of 48.2 to 62.3 kJ/s, and temperature reductions of 45.2 to 52.8°C. The prediction model utilizing the ε-NTU approach exhibited significant accuracy. Subsequent investigation indicated that the mass flow ratio significantly influences thermal efficacy. Particle Swarm Optimization enhanced the efficacy by as much as 8.5%. The results provide practical criteria for predictive maintenance, facilitating effective Maintenance, Repair, and Overhaul choices in commercial aircraft operations.
Finite Element Analysis of Impact-Velocity Effects on the Erosion Behavior of GH4720Li Superalloy-Based Cr₃C₂ Coatings Riki Hendra Purba; Raffi Indrajati; Fitri Wahyuni; James Julian; Elvi Armadani; Fathin Muhammad Mahdhudhu
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9317

Abstract

This study examines the effect of impact velocity on the erosion behavior of GH4720Li superalloy with and without Cr₃C₂–NiCr coating using Finite Element Analysis. Silica particles (0.7 mm) were modeled at velocities of 25–125 m/s under normal impact. Results show that increasing velocity raises the maximum Von Mises stress before reaching a dynamic equilibrium. Coated specimens exhibited nearly twice the stress values of uncoated ones, indicating better load distribution and initial damage resistance. At low velocities (25–50 m/s), the coating reduced plastic deformation by absorbing impact energy. However, at higher velocities (≥75 m/s), the coating transferred more energy to the substrate, causing greater plastic strain than in uncoated material. These findings demonstrate that cermet coatings improve erosion resistance at low-to-moderate velocities but have limited performance under high-velocity impacts

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