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Journal of Science Technology (JoSTec)
Published by PT Inovasi Pratama Internasional
ISSN : -     EISSN : 28307275     DOI : https://doi.org/10.55299/jostec
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering
Journal of Science Technology (JoSTec), e-ISSN: 2830-7275 provides a forum for publishing the original research articles from contributors related to embedded system and control, processor and IC design, network and infrastructure, and computing algorithms. The scope of JoSTec starting from Volume 1 (2019) is as follows: embedded system based on microcomputer/microcontroller; algorithms and artificial intelligence; robotics; control systems; computer vision and pattern recognition; computer networks and security; processor and ASIC design; programable devices based on HDL and IP Core; high-performance computing (HPC); sensor network and IoT; distributed systems; cloud computing, and mobile computing.
Arjuna Subject : Ilmu Komputer (semua kategori) - Sistem Informasi
Articles 61 Documents
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USE OF CONSTRUCTION WASTE IN MANUFACTURING ENVIRONMENTALLY FRIENDLY CONCRETE BRICKS Satrio, Muji; Rivai, Syafriman; Nasution, Ridwan
Journal of Science Technology (JoSTec) Vol. 6 No. 1 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i1.849

Abstract

The purpose of this research is to evaluate the potential of construction waste generated by the construction industry as an alternative raw material in the manufacture of environmentally friendly concrete bricks. Research the method and process of concrete brick production using construction waste as the main raw material. Analyze the physical and mechanical properties of concrete bricks produced from construction waste and compare them with conventional concrete bricks. The approach used in this research is an integrated qualitative-quantitative approach. The qualitative approach was used to identify the characteristics and physico-chemical properties of the construction waste used. Meanwhile, the quantitative approach was used to test the quality of the concrete bricks produced. This research used an experimental design. Experiments were conducted in a construction laboratory with strict control of the variables that can affect the quality of concrete bricks. The result of this study is that the utilization of construction waste in the manufacture of environmentally friendly concrete bricks has been shown to enable a reduction in the use of natural raw materials and reduce the environmental impact of concrete brick production. The use of construction waste affects the quality of concrete bricks, including strength, durability, and other physical properties. This research provides an in-depth insight into how to optimally utilize construction waste without compromising product quality. The use of construction waste in concrete brick production can reduce the carbon footprint and other environmental impacts, helping to promote more sustainable construction practices.
THE EFFECT OF IMPLEMENTING BUILDING STRUCTURE AND CONSTRUCTION SYSTEMS ON ENERGY EFFICIENCY Nasrullah; Mustamin, Muhammad Tayeb
Journal of Science Technology (JoSTec) Vol. 6 No. 1 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i1.871

Abstract

This research aims to investigate the effect of implementing structural systems and building construction on energy efficiency. Quantitative analysis methods are used with the help of SPSS Version 27 to test the correlation between structural system variables, building construction and energy efficiency. A linear regression test was carried out to understand how much influence the application of structural systems and building construction has on energy efficiency. The results of the research show that the application of the structure and building construction system has an effect on energy efficiency, where each increase of one unit influences the application of the structure and building construction system to 100% energy efficiency. In addition, the Pearson correlation test shows that there is a strong relationship between the application of structural systems and building construction and energy efficiency. A high correlation coefficient indicates that implementing the right system has the potential to increase building energy efficiency. These findings show the importance of selecting appropriate structural systems and building construction in achieving high energy efficiency. Thus, this research contributes to understanding how to build more energy efficient buildings.
Design of an Artificial Intelligence Based Recommendation System to Improve User Experience On E-Commerce Platforms Afrizal Zein
Journal of Science Technology (JoSTec) Vol. 6 No. 2 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i2.979

Abstract

The objective of this research is to explore the design and development of an artificial intelligence-based recommendation system to enhance user experience on e-commerce platforms. The research methodology employed is qualitative research, a method used to gain in-depth understanding of social phenomena. The chosen type of research is a literature review, where in the researcher collects, studies, and analyzes written references or sources such as books, journals, articles, documents, and other significant sources of information related to the researched topic or title. Subsequently, the researcher analyzes and draws conclusions to find answers to the research questions. The research findings indicate that the development of an artificial intelligence-based recommendation system for improving user experience on e-commerce platforms is a relevant and pressing step. By comprehending various aspects discussed in the literature, the researcher can design a system that is not only accurate and efficient but also ethical, secure, and aligned with user needs. For future researchers, further studies are needed, and practical implementation steps will be crucial to translate literature findings into tangible solutions that can enhance the e-commerce landscape in the future.
Analysis of Production Results of Clear Coffee Streamer Machines Wardhana, Megandhi Gusti; Putra, Adi Pratama; Hadi, Charis Fathul; Anam, Muhamad Khoirul
Journal of Science Technology (JoSTec) Vol. 6 No. 2 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i2.1115

Abstract

Indonesia is the fourth coffee producer in the world after Brazil, Vietnam and Colombia. However, in the 2018-2021 period, the value of Indonesian coffee exports experienced a decline, which was in line with the low volume of Indonesian coffee exports in that year compared to the previous period, so that Indonesia's position fell from fourth to fifth as a coffee exporting country in the world. These various things could be due to the lack of downstream processing in coffee processing in Indonesia. The current problem is that there is no tool for the process of separating coffee into clear coffee, this tool is available abroad and the price is quite expensive. This research tries to make a clear coffee streamer and analyzes the production results of a clear coffee streamer. The results of the design of a clear coffee streamer tool using stainless steel material can be used with a capacity of 20 liters and a maximum heating temperature of 100oC, while testing the production capacity of the clear coffee streamer tool produces data using a material volume of 1500 ml resulting in a production volume of 850 ml in a time of 75 minutes. Meanwhile, using a volume of 200 ml of material produces 950 ml with a time of 75 minutes.
Analysis of Damage to Abdul Haris Nasution Road Section from STA 4+400 to STA 8+700, Batu Nadua District, Padangsidimpuan City Simanullang, Ramot; Rafii, Ahmad; Pohan, Rizky Febriani
Journal of Science Technology (JoSTec) Vol. 6 No. 2 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i2.238

Abstract

Highways are one of the most important land transportation infrastructures, so good road pavement design is a must. Good road pavement is also expected to provide a sense of safety and comfort in driving, especially affect the smooth flow of traffic. One of the causes of road damage is the lack of maintenance costs which results in a decrease in the quality of implementation. The rapid growth of vehicles has an impact on traffic density, both on inner-city and outer-city roads, so that it is necessary to improve the quality and quantity of road infrastructure. The goal to be achieved in writing the results of this thesis is to find out what types and percentages of damage occurred Abdul Haris Nasution Road Section and maintenance handling and knowing the thickness of the pavement layer required Abdul Haris Nasution Road Section. Road damage is analyzed using the Indonesian Road Capacity Manual Method while flexible pavement thickness planning is adjusted to the Component Analysis Method with a design life of 20 years. From the results of data analysis, it can be concluded that: the types of damage that occur on Jalan Abdul Haris Nasution consist of 2 types, namely: crocodile skin cracks of 10.47% and holes of 6.53%. The percentage value of damage is 17.00%, so the damage category is included in the slight due to the length of the span being reviewed as quite long and the maintenance handling is increasing. The thickness of the pavement layer required on Jalan Abdul Haris Nasution, namely: surface layer 15 cm, upper foundation layer 20 cm and lower foundation layer 10.00 cm.
Use Deep Learning for Processing Automation Image DR in Detecting Pneumothorax Mirfauddin, Mirfauddin
Journal of Science Technology (JoSTec) Vol. 6 No. 2 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i2.1297

Abstract

Pneumothorax is condition medical serious thing that happened consequence accumulation air in the pleural cavity, which can cause the collapse lungs and potentially threaten soul If No quick handled. A quick and accurate diagnosis is essential. For determine action proper medical. Digital radiography (DR) is one of the method the most common imaging used in detect pneumothorax. However, the limitations in manual interpretation by manpower medical can cause misdiagnosis or​ delay in handling. Study This propose approach based on Deep Learning, especially Convolutional Neural Networks (CNN), for automation processing DR image in detect pneumothorax. The model used utilise ResNet-50 and DenseNet-121 architectures with transfer learning techniques for increase accuracy classification. The data used originate from the ChestX-ray14 and SIIM-ACR Pneumothorax Challenge datasets that have been annotated by experts radiology. Research result show that the CNN model was developed reach level accuracy of 92%, with a precision of 90%, a recall of 93%, and an F1-score of 91%. In addition, the technique Grad-CAM visualization is used For increase interpretability of the model with highlight important areas in the image that becomes base decision classification. Implementation of this model No only increase efficiency of pneumothorax diagnosis but can also reduce burden Work power medical as well as increase quality service health . With promising results , research​ This open opportunity For development more carry on in application of AI in the field radiology.
Unraveling the Research Trends of Artificial Intelligence in Aviation: A Bibliometric Analysis Sulung, Sabam Danny; Nasrullah, Muhammad Nur Cahyo Hidayat; Wibowo, Untung Lestari Nur; Lubis, Julianto
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.696

Abstract

This study employs bibliometric methods utilizing VOSviewer analysis of Scopus data from 2013 to 2023 to investigate trends in artificial intelligence (AI) research within the aviation industry. The analysis reveals a substantial increase in publication volume over time, peaking at 406 articles in 2022, signifying a heightened interest in AI implementation within the aviation sector. Key publication sources notably include conferences such as AIAA IEEE Digital Avionics Systems Conference Proceedings and ACM International Conference Proceeding Series. Leading contributions in publications emerge from countries such as the United States, China, India, Germany, the United Kingdom, and France, reflecting global involvement in AI research within the aviation industry. Citation analysis identifies highly cited articles addressing topics such as Digital Twin (DT) optimization processes in aviation, AI application in aircraft navigation, and machine learning for weather forecasting. These findings underscore researchers' interest in fundamental topics such as aviation, aircraft-related artificial intelligence, flight delay, and deep learning. Furthermore, co-citation analysis delineates research clusters, illustrating thematic similarities within AI research in the aviation industry. Overall, this bibliometric analysis provides comprehensive insights into the evolution of AI research in the aviation industry, potentially guiding researchers, practitioners, and stakeholders in directing research efforts, formulating policies, and understanding current trends in the application of artificial intelligence within the aviation sector.
Formal Verification for WiMAX Networks Using Enhanced Security Protocols Afrizal Zein; Lubis, Julianto
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.763

Abstract

This study discusses the formal verification of the Worldwide Interoperability for Microwave Access (WiMAX) security protocol. WiMAX security specifications are defined as a security property that must be met by the protocol in a WiMAX network. The security properties that must be met include pseudonymity, information confidentiality, anti-tapping and session key secrecy. Several studies have found several failures to comply with the security properties set by the WiMAX IEEE 802.16-2004 and IEEE 802.16e-2005 standards. Some of the attacks that can occur include jamming, scrambling, DoS attacks, replay attacks, modification of management messages, downgrade attacks, interleaving attacks and other types of security attacks. From some of these attacks there are several solutions to improve security protocols to overcome these attacks so that they can comply with security protocols. Proof of security protocols in the ability to fulfill security properties can be done either formally or informally. The security protocol operational semantic model framework developed by Cas Cremers and Sjouke Mauw is used to carry out formal verification of proposed improvements to the authentication protocol and Privacy and Key Management (PKM) protocol. Modeling the proposed protocol with an operational semantic framework has been able to prove the proposed improvement of the authentication protocol and PKM by using timestamps, SS/BS identity encryption and adding digital signatures or message digest values ​​to ensure authentication is able to meet the specified security properties.
Analysis of Damage to Abdul Haris Nasution Road Section from STA 4+400 to STA 8+700, Batu Nadua District, Padangsidimpuan City Simanullang, Ramot; Rafii, Ahmad; Pohan, Rizky Febriani
Journal of Science Technology (JoSTec) Vol. 6 No. 2 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i2.238

Abstract

Highways are one of the most important land transportation infrastructures, so good road pavement design is a must. Good road pavement is also expected to provide a sense of safety and comfort in driving, especially affect the smooth flow of traffic. One of the causes of road damage is the lack of maintenance costs which results in a decrease in the quality of implementation. The rapid growth of vehicles has an impact on traffic density, both on inner-city and outer-city roads, so that it is necessary to improve the quality and quantity of road infrastructure. The goal to be achieved in writing the results of this thesis is to find out what types and percentages of damage occurred Abdul Haris Nasution Road Section and maintenance handling and knowing the thickness of the pavement layer required Abdul Haris Nasution Road Section. Road damage is analyzed using the Indonesian Road Capacity Manual Method while flexible pavement thickness planning is adjusted to the Component Analysis Method with a design life of 20 years. From the results of data analysis, it can be concluded that: the types of damage that occur on Jalan Abdul Haris Nasution consist of 2 types, namely: crocodile skin cracks of 10.47% and holes of 6.53%. The percentage value of damage is 17.00%, so the damage category is included in the slight due to the length of the span being reviewed as quite long and the maintenance handling is increasing. The thickness of the pavement layer required on Jalan Abdul Haris Nasution, namely: surface layer 15 cm, upper foundation layer 20 cm and lower foundation layer 10.00 cm.
Control Inventory of Raw Materials Using Supply Probabilistic with Q Method (Continuous Review Method) in the Animal Feed Industry Shrimp Sihotang, Rinto; Handayani, Rina
Journal of Science Technology (JoSTec) Vol. 6 No. 1 (2024): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v6i1.789

Abstract

The ingredients used to make shrimp feed include soybean meal, shrimp head meal, squid flour, wheat flour, fish head meal, and other components. The demand for companies to produce shrimp feed varies and is unpredictable, leading to a shortage of raw materials and the inability to fulfill orders. To solve this problem, the company places special raw material orders or surprise orders. However, sudden orders result in higher inventory costs than normal company orders. This study aims to determine the optimal raw material order, to minimize inventory costs through a probabilistic model of raw material inventory control with the Q method (continuous review method). Based on the results of the Q method, optimal order quantity (q), reorder points (r), and safety stock (Ss) were obtained. The total inventory cost generated in the Q method was lower than the total inventory cost used by the company, with a total savings of 6.11% per year.

Page 5 of 7 | Total Record : 61

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