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Engineering Science Letter
Published by Indonesian Institute of Science and Technology Research
ISSN : 29618924     EISSN : 2961872X     DOI : https://doi.org/10.56741/esl.v1i02
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Engineering Science Letter is an international peer-reviewed letter that welcomes short original research submissions on any branch of engineering, computer science, and technology, as well as their applications in industry, education, health, business, and other fields. Artificial intelligence, image processing, data mining, data science, bioinformatics, computational statistics, electrical engineering, electronics engineering, telecommunications, hardware systems, industrial automation, industrial engineering, fluids and physics engineering, mechanical engineering, chemical engineering, and their applications are among the engineering and computer science topics covered by the journal. All papers submitted will go through a peer-review process to ensure their quality. Submissions must contain original research and contributions to their field. The manuscript must adhere to the author’s guidelines and have never been published before.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol. 3 No. 02 (2024): Engineering Science Letter" : 6 Documents clear
A Proposed Quality Improvement of Delivery Services at PT Pos Indonesia Using Importance-Performance Analysis and Kano Model Silitonga, Roland Y. H.; Tindaon, Phila Delphia; Indriati, Ellen; Martina, Inge
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.534

Abstract

PT Pos Indonesia, a courier service company, contends with a notably low market share, as indicated by Top Brand data reflecting market proportions over the past five years in Indonesia. This decline in market share is predominantly attributed to subpar service quality. Hence, there is a pressing need to scrutinize PT Pos Indonesia to enhance its service standards for consumers and discern the service attributes requiring maintenance and prioritized improvement. This study employs the IPA (Importance Performance Analysis) and Kano method, both of which complement each other synergistically. IPA seeks to unearth insights into service factors influencing customer satisfaction and loyalty, while the Kano model categorizes service attributes based on their capacity to meet customer needs effectively. Additionally, the Kano model identifies areas warranting attention or enhancement, which can augment customer satisfaction. The analysis reveals four attributes classified as defenseless strategy points and one attribute deemed a chronic issue through the amalgamation of IPA and Kano model findings, thereby informing decisions to enhance performance.
An Analytical Study of Suspension Bridge Collapse Based on the Characteristics of the Eigen Values Jufriansah, Adi; Pramudya, Yudhiakto; Lazwardi, Ahmad; Khusnani, Azmi; Nurrahman, Arip; Alip, Isma; Wae, Konsenius Wiran; Wahab, Dedi Suwandi
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.540

Abstract

This research discusses an analytical approach to suspension bridge accidents focusing on eigenvalue characteristics. This research uses eigenvalue analysis to explore patterns that may contribute to bridge structural failure. The analysis steps include reducing the model to an uncoupled and linear system, as well as determining homogeneous and non-homogeneous solutions, which helps identify accident-prone patterns. The analysis results also reveal significant differences in dynamic characteristics between safe bridges and those that experience accidents. This research highlights the importance of a deep understanding of eigenvalues in designing, maintaining, and managing suspension bridges. The implication of this research is the development of more effective prevention strategies to improve suspension bridge safety in the future. By analyzing eigenvalues, this research provides deep insight into the factors that influence the stability of suspension bridges. These findings provide a strong foundation for developing recommendations for more effective design, maintenance, and management of suspension bridges. The conclusions of this research can help improve the safety and reliability of suspension bridges worldwide and contribute to civil engineering and infrastructure security.
Simulation of the Tuna Freezing Process and Evaluation of Factors Influencing the Freezing Time of the Tuna Huong, Hoang Thi Nam; Hoang, Do Huu; Sim, Vo Van
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.548

Abstract

This paper presents the simulation of the tuna freezing process by using ANSYS software. Based on simulation results, factors affecting the freezing time including air velocity and freezing temperature were determined. Within the air velocity range w = (5÷15) m.s-1, an increase in the velocity by Ñw =1 m.s-1 led to a decrease in the freezing time by Ñt  = (7.2÷2.3) %. When the freezing temperature was reduced by Ñte = 1 K, the freezing time was reduced by Ñt = (3.2÷2.5) % in the freezing temperature range te = (–35÷–45) oC.
Development of a Hybrid Decision Support System for Selecting the Air Filters Based on Multiple Criteria Nguyen, Thi Thao Uyen; Nguyen, Vu Anh Duy; Nguyen, Huu-Tho; Ghazali, Ihwan
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.553

Abstract

To select an air purifier that fully meets the needs of consumers, this study was conducted to provide the most objective and effective suggestions in making decisions and evaluating different smart purifier options that suit the tastes of users. Such decision-making is complicated for non-professionals when there are countless large and small brands on the market today with many different prices, features, and incentives. In such complex situations, decision-making with TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) can be used to eliminate risk and to better represent the preferences of decision-makers. From modeling to using the Entropy method and the TOPSIS method, all are done to serve the ultimate goal of choosing a good air purifier that meets the needs of customers.
Responsive Skin Application Techniques in Energy-Efficient Buildings Alagöz Konur, Meryem; Türker, Sevim Gülen; Sarıcıoğlu, Pelin
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.555

Abstract

Energy efficient buildings are those that consume less energy with the measures taken during the design process, meet the energy they need from renewable sources, and make a minimum environmental impact by using the energy obtained most effectively. Within the scope of this study, energy-efficient buildings were selected because they emphasize environmental sensitivity in the design, construction, and use phases. The study aims to analyze the sensitive volumes through algorithmic graphic programs and categorize them according to the application technique. The study is based on written sources, internet databases, and photographs. Visuals and examples are used to give details. In energy-efficient building design, responsive skin algorithmic application techniques provide optimum energy in a short time and make a great contribution to the national economy.
Autonomous Vehicles: From Technology to Law and Regulation Suhariyanto, Didik; Usman, Ridwan; Marlin, Syamsu; Kurnia, Mega Tri; Firman, La Ode Mohammad; Balogun, Shuaibu Alani; Ghazali, Ihwan
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.565

Abstract

The advent of autonomous vehicles marks a convergence of technological advancement, societal change, and regulatory evolution with profound implications. This transformative technology has shifted from science fiction to reality, sparking extensive discourse encompassing technological progress, legal intricacies, and ethical considerations. This scholarly exploration navigates the intricate terrain of autonomous vehicles, tracing their evolution from a technological marvel to a catalyst for profound changes in legal frameworks, regulations, and societal dynamics. Our journey begins by delving into the technological foundations and significant achievements that underpin autonomous vehicle development. This illuminates the complex algorithms, sensor arrays, and machine-learning capabilities driving these self-driving vehicles. Transitioning from technology, we delve into the intricate realm of law and regulation, where established norms of road safety, liability, and privacy intersect with autonomy's transformative potential. This paper scrutinizes the intricate network of legal frameworks and ethical considerations governing the testing, deployment, and daily operation of autonomous cars. With their integration into transportation systems gaining prominence, balancing innovation with regulation assumes critical importance. This study embraces technology, law, and regulation, aiming to understand the multifaceted dimensions arising when autonomous cars intersect with legal and ethical frameworks. We explore the dynamic nature of global regulatory paradigms, analyzing obstacles, achievements, and ethical dilemmas shaping progress. As we embark on this endeavor, our goal is to offer a valuable resource elucidating the intricate process of transitioning from technology to legal frameworks and regulations within the era of autonomous vehicles.

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