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JSE Journal of Science and Engineering
Published by Universitas Muhammadiyah Kalimantan Timur
ISSN : 27233944     EISSN : 27233944     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Engineering Mechanical Engineering Transportation
JSE Journal of Science and Engineering is an open-access and peer-reviewed scholarly international journal for engineers and technologist. This journal accepts unpublished research and review papers in the areas of Mechanical and Manufacturing Engineering, Structural and Civil Engineering, also Informatics and Information Technology. Potential authors are invited to submit articles in English.
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 8 Documents
 1 
Search results for , issue "Vol. 3 No. 2 (2025): Journal of Science and Engineering" : 8 Documents clear
ID Card Printing Time Prediction With Mean Absolute Error in Linear Regression Fawwazrin, Akmal Mugni; Arbansyah, Arbansyah; Amin Rezaeipanah
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.3868

Abstract

The Population and Civil Regrestration Center, know in Indonesia as the Dinas Kependudukan dan Catatan Sipil (Dukcapil), is a government agency responsible for managing and recording population data in specific regions. Dukcapil is responsible for recording births, deaths, marriages, divorces, and documenting identities through the Electronic Resident Identity Card (E-KTP). Dukcapil faces the need to address delays in document issuance, which will be the focus of this research. The data were collected directly when researchers conducted Praktek Kerja Lapangan (PKL) at Dukcapil. This study utilizes the linear regression method to estimate the time required for printing E-KTP cards that will be produced and calculates the Mean Absolute Error (MAE). Thorough MAE calculations using the linear regression method, researchers obtained a result of 10.2923 from the available data.
Sentiment Analysis of the Public on the Deployment of Smart Robots in Indonesia Using the Naïve Bayes Method Muthmainnah, Muthmainnah; Rudiman, Rudiman; Yulianto, Fendy
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.3887

Abstract

In this digital era, social media platforms have become the primary means for the public to express opinions on current issues, including discussions about the roles of robots and artificial intelligence in replacing human jobs. The focus of this community service is to investigate public sentiment regarding the implementation of smart robots in Indonesia, utilizing text-based sentiment analysis. The Naïve Bayes method is chosen as the approach to classify sentiments, overcoming challenges such as language and cultural variations. Through data testing and training, this research successfully achieved an accuracy rate of 98%, with high Precision, Recall, and F1 Score. The results provide valuable insights for companies and organizations that need to understand public perspectives on technological advancements and their impact on human employment.
Sentiment Analysis, Classification of Twitter Tweets of the Constitutional Court Decision on Vice Presidential Candidates Using Naïve Bayes Method Nurlita, Nurlita; Rudiman, Rudiman; Hallim, Abd
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.3894

Abstract

The development of information technology has had a significant impact on the acceleration and ease of exchanging information and communication. The emergence of popular social media platforms, such as Twitter, Facebook, Instagram, Youtube in order to explore trending and popular information. Social media has become a reference for the Indonesian people in considering all possibilities that are happening, including public unrest against decision-making that is not in accordance with the norms and ethics within the scope of the constitutional court. Decisions issued by the Constitutional Court (MK) have the potential to trigger significant reactions and debates in society. In this research, we conducted a sentiment analysis on the current issue of the Constitutional Court, where the problem is that many people doubt the decisions taken and many also support the decision so that the virtual world becomes a place for people to express their thoughts about it, especially on the Twitter platform. In expressing their thoughts on the Twitter platform will display Positive, Negative, and Neutral expressions. The method used to see the results of the analysis of the Constitutional Court Decision is the Naïve Bayes method to get accurate results. By using 540 data, the total data of F1 results is the average of precission and recall: AUC of 93.8%, Classification accuracy (CA) of 21.7% Model accuracy of 97.1% Recall of 21.7% F1 score of 14.8%, with a total of 540 data, a total of 10 negative actual data, while 7 positive and 523 neutral. With these results, many people respond to the results of the Constitutional Court's decision Neutral.
Steganography for Data Hiding in Digital Audio Data Using Combined Least Significant Bit and Blowfish Method Pradana, Rizal; Hallim, Abd; Faldi, Faldi
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.3924

Abstract

Abstract – The purpose of this research is to examine the utilization of steganography and Blowfish encryption to maintain message confidentiality in digital audio files. This research combines LSB encryption and Blowfish algorithm, focusing on embedding text into audio, with PSNR analysis. Results show the effectiveness of the method without significantly affecting audio quality, with PSNR values above 50dB. The application of Blowfish and LSB to audio files successfully secures the message, and the use of base64 increases the security level.
Analysis of Steel Bridge Frame Reinforcement Using External Prestressing Method Due to Moving Loads Noor, Rusandi; Mustaqim, Muhammad; Mufassirin Liana, Ulwiyah Wahdah; Siregar, Adde Currie
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.4062

Abstract

Bridge reinforcement with external prestressing method is a proven effective approach to overcome damage in strengthening bridge structures. This method uses the installation of prestressing cables outside the steel frame of the bridge to increase the strength and stability of the structure. The bridge structure is made with the guidelines of SNI 1725: 2016 standard steel frame of class A bridges, using IWF and H Beam steel, with a plate thickness of 20 mm with a span length of 60 meters, a width of 9.13 meters and a height of 6.3 meters. The structural analysis of this study uses the SAP2000 v22 software program. In this study, 3 prestressing cable tensions were compared on the reinforcement of the bridge frame with the external prestressing method. And a loading simulation was carried out which could provide a response in the form of strain due to moving loads and a bridge structure response that was reduced by approximately 50% from the deflection force on the steel frame reference bridge if given a moving load. Choosing a bridge that has the lowest settlement. The review point is determined for the comparison of deflection at point object 7 and joint object U3. The Type E cable-stayed bridge has the lowest results in percentage, about 46.68% for a speed of 40 km/h, 48.60% for a vehicle speed of 50 km/h and 49.91% for a vehicle speed of 60 km/h, indicating that this bridge has the best analysis performance among the cable-stayed bridges analyzed.
Design And Build Monitoring System Temperature And Ph Hydroponic Plants Based On Internet Of Things (Iot) Technology Using Nodemcu Esp-8266 Microcontroller Alfianur, Muhammad Fahri; Arbansyah, Arbansyah; Sumadi, Muhammad Taufiq
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.4166

Abstract

Hydroponic agriculture is a soilless plant cultivation method that is becoming increasingly popular in the modern era. However, hydroponic systems require strict monitoring of environmental parameters, especially temperature and pH, to ensure optimal plant growth. This research aims to design and build a temperature and pH monitoring system for hydroponic plants based on the Internet of Things (IoT) using a NodeMCU ESP-8266 microcontroller. The developed system consists of a DS18B20 temperature sensor, a pH sensor, a NodeMCU ESP-8266 microcontroller, and the ThingSpeak IoT platform. These sensors are used to measure the temperature and pH of the hydroponic nutrient solution in real-time. The collected data is then sent to the ThingSpeak platform via the WiFi connection integrated into the NodeMCU ESP-8266. The implementation of this system is expected to assist hydroponic farmers in efficiently monitoring and controlling their plants' environmental conditions, thereby increasing productivity and harvest quality. Further research can be conducted to integrate more parameters and develop automatic control systems based on the collected data.
Analysis of Contract Change Order (CCO) in the Samarinda Road Preservation Project Devedo, Mochamad Gaharu; Lestari, Dyah Ayu
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.4227

Abstract

Road infrastructure improvement is crucial for supporting economic growth and urban development, particularly in cities like Samarinda, East Kalimantan, which faces challenges due to increasing traffic volumes. To address this, the Public Works Department initiated a road preservation project aimed at enhancing the city’s road network. However, unforeseen changes during execution, known as contract change orders (CCOs), are common in construction projects and can affect costs, timelines, and quality. CCOs often arise from fluctuating material prices, design revisions, or external factors. Effective management, including risk analysis and clear communication, is crucial for minimizing delays and cost overruns. This study examines CCOs in a road preservation project in Samarinda, focusing on their causes, impacts, and management strategies. Data collection includes primary data from the contractor’s project monitoring documents and secondary data from literature studies. Quantitative analysis is used to assess the causes and impacts of CCOs, measured by Change Order Ratio (COR) and Change Order Ratio in Addition (CORA). The research aims to identify key factors driving contract changes and analyze their effects on cost, time, and quality. For the Samarinda project, COR and CORA were both 2.54%. The contract value increased from Rp1,950,519,068.00 to Rp2,000,079,068.00 due to additional work, with a cost deviation of Rp49,560,000. Despite these changes, the cost deviation was minimal, indicating effective management of contract changes. This study emphasizes the importance of continued evaluation to minimize future changes and ensure the efficiency of road infrastructure projects.
Analysis of Route Selection Using the Analytical Hierarchy Process (AHP) in Mahakam Ulu Regency Yulfadli, Zony; Adani, Sakila Herfiana Silmy; Nafis, Mochamad Abdillah
JSE Journal of Science and Engineering Vol. 3 No. 2 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30650/jse.v3i2.4293

Abstract

Roads are essential infrastructure for improving the economy of the community and regional development. Good road infrastructure certainly impacts the progress of an area. As the region develops and the complexity of the district government's tasks increases, which affects the increase in vehicle traffic, new road access is needed to facilitate the mobility of officials. The Analytical Hierarchy Process (AHP) method is one of the methods used for decision-making in project feasibility studies. In this study, there are four criteria used, namely 1. Distance 2. Efficiency, and; 3. Spatial Planning Integration and aesthetics. Each of these three criteria is broken down into two sub-criteria. Questionnaires were distributed to two respondents selected proportionally, consisting of one person from the Public Works Department of Mahakam Ulu Regency and one person from the Planning Consultant of PT. TEMA KARYA MANDIRI KSO. The questionnaire results were analyzed using the Analytical Hierarchy Process (AHP) method to assess four alternative road sections to be selected. Based on the AHP analysis of the main entrance road planning in the office area of Mahakam Ulu Regency, alternative location 1 was chosen with an AHP score of 0.473, which is higher than the other three alternatives. Therefore, alternative location 1 is recommended to proceed to the next study stage (Detail Engineering Design).

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