Sinergi
SINERGI is a peer-reviewed international journal published three times a year in February, June, and October. The journal is published by Faculty of Engineering, Universitas Mercu Buana. Each publication contains articles comprising high quality theoretical and empirical original research papers, review papers, and literature reviews that are closely related to the fields of Engineering (Mechanical, Electrical, Industrial, Civil, and Architecture). The theme of the paper is focused on new industrial applications and energy development that synergize with global, green and sustainable technologies. The journal registered in the CrossRef system with Digital Object Identifier (DOI). The journal has been indexed by Google Scholar, DOAJ, BASE, and EBSCO.
Articles
20 Documents
Search results for
, issue
"Vol 28, No 1 (2024)"
:
20 Documents
clear
<![CDATA[Strength and durability properties of concrete made with recycled coarse aggregate and seashore sand ]]>
<![CDATA[D. Kalaimani]]>;
<![CDATA[G. Srinivasan]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.012
<![CDATA[The process of depletion of sources of natural aggregates poses challenges to produce technically and environmentally suitable concrete. Aggregate compositions found in construction and demolition (C&D) waste offer potential alternatives to natural coarse aggregates. Additionally, the utilization of abundantly available natural material like seashore sand, as a replacement for river sand, can present a viable solution to this problem. This research paper investigates the performance of concrete that incorporates 40% recycled coarse aggregates, along with varying percentages of seashore sand as replacements for river sand (0%, 10%, 20%, 30%, 40%, 50%, and 100%). The evaluation focuses on strength properties, including compressive strength tests on cylinders and impact resistance tests, as well as durability properties such as water penetration tests under pressure and sulphate attack tests. The experimental results indicate that concrete incorporating both recycled coarse aggregates and seashore sand replacements yields favorable outcomes in terms of strength and durability when compared to the controlled concrete, particularly at suitable replacement proportions. ]]>
<![CDATA[Effective and efficient approach in IoT Botnet detection ]]>
<![CDATA[Susanto Susanto]]>;
<![CDATA[Deris Stiawan]]>;
<![CDATA[M. Agus Syamsul Arifin]]>;
<![CDATA[Mohd. Yazid Idris]]>;
<![CDATA[Rahmat Budiarto]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.004
<![CDATA[Internet of Things (IoT) technology presents an advantage to daily life, but this advantage is not a guarantee of security. This is because cyber-attacks, such as botnets, remain a threat to the user. Detection systems are one of the alternatives to maintain the security of IoT network. A reliable detection system should effectively detect botnets with high accuracy levels and low positive rate. It should be efficient to perform detection quickly. However, data generated by IoT networks have high dimensions and high scalability, so they need to be minimized. In network security analysis process, high-dimension data pose challenges, such as the dimension curse correlation between different dimensions, which causes features that are hard to define, datasets that are mostly unordered, cluster combination, and exponential growth. In this study, we applied feature reduction using the Linear Discriminant Analysis (LDA) method to minimize features on the IoT network to detect botnet. The reduction process is carried out on the N-BaIoT dataset which has 115 features reduced to 2 features. Performing feature reduction with detection systems has become more effective and efficient. Experimental result showed that the application of LDA combined with machine learning on the classification Decision Tree method was able to detect with accuracy that reached 100% in 98.58s with only two features.]]>
<![CDATA[Performance analysis of ship mounting PV panels deployed in Sungsang Estuary and Bangka Strait, Indonesia ]]>
<![CDATA[Afiz Zullah]]>;
<![CDATA[Tresna Dewi]]>;
<![CDATA[Rusdianasari Rusdianasari]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.017
<![CDATA[In an archipelago country like Indonesia, maritime transportation is essential. However, the ships, like other modes of transportation, burn fuel, contributing to CO2 emissions and negatively impacting marine life. Alternative renewable energy can help solve this problem while being environmentally friendly and cost-effective. As a result, this research describes installing PV systems to power electronic loads on a pilot ship. The supply-demand scenario was simulated using the System Advisory Model. The experiment lasted 176 days, 32 of which were still hybrid with a diesel generator, and for 144 days, electronics loads were entirely powered by PV systems. The experimental results show that the generated power consistently exceeds what is necessary. MPPT may also control the battery charging to avoid overcharging by ensuring the voltage input is always consistent. The maximum generated power is 2356 W with a peak load of 1669 W, and the average generated power is 1645 W with a load of 720.6 W. According to SIMAPRO's life cycle study results, the most significant environmental impact comes during installation due to using diesel fuel trucks and when the PV system is no longer operational since it will become a landfill, harming the ecosystem. PV systems, on the other hand, have no environmental impact during installation. Economic estimates show significant savings and, of course, profits.]]>
<![CDATA[Machining performance of ceramic tool inserts during dry turning of hardened steel ]]>
<![CDATA[K. I. Vishnu Vandana]]>;
<![CDATA[P. Siva Nagasree]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.008
<![CDATA[For effective dry turning of hardened steels, ceramic tool materials have long been utilized as an alternative to conventional tool materials. Therefore, the purpose of the current work is to investigate whether ceramic materials like alumina (Al2O3) are suitable for use as tool materials during the dry (without coolant) turning of hardened steels. In addition, while cutting EN 24 hardened steels, the performance of an alumina ceramic tool insert was compared to a commercial tool insert in the current work. On EN 24 steel samples, turning operations were performed utilizing both alumina ceramic tool inserts and commercial carbide tool inserts at different machining parameters such as speed, feed, and depth of cut. The turning performance of both alumina and commercial tool inserts was evaluated at various machining conditions based on abrasive wear (weight loss) of the tool inserts and the surface roughness of EN 24 machined samples. At all machining parameters, it was found that the abrasive wear of ceramic tool inserts was lower than the abrasive wear of commercial tool inserts. It is observed that, the surface roughness of EN 24 machined samples when machined with ceramic tool inserts was a little higher when compared with the surface roughness values of EN 24 machined samples which are machined with the commercial tool insert. The results of the experiment showed that ceramic cutting tools had comparable cutting performance to commercial cutting tools. ]]>
<![CDATA[Identifying weaknesses and strengths of existing I4.0 Readiness Indices to enhance INDI 4.0 ]]>
<![CDATA[Hasbullah Hasbullah]]>;
<![CDATA[Salleh Ahmad Bareduan]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.013
<![CDATA[Indonesia has low Industry 4.0 (I4.0) readiness in ASEAN and has the INDI 4.0 Instrument (Indonesia Industry 4.0 Readiness Index), which is less comprehensive and accurate. An Initial survey confirmed that only 56.86% of respondents agreed that INDI 4.0 accurately measures readiness in the manufacturing industry. Unlike primary I4.0 indices, INDI 4.0 lacks comprehensive Industry 4.0 dimensions and characteristics, as many literature and other indices cover. This study aims to identify weaknesses and strengths of major I4.0 indices by comparing them to enhance INDI 4.0. This paper identified gaps in existing major I4.0 indices by scoping review method. However, each index contributes to increasing practicality, fulfilling latent needs, and expanding complementary perspectives in measuring readiness and adoption of I4.0 based on studies, viewpoints, uniqueness, and views of each. This study offered a more comprehensive perspective, especially from developing countries like Indonesia, with industries struggling to adopt I4.0 to fill loopholes in existing major indices that are generally from developed countries, so most companies in their study have advanced or implemented I4.0 and are too focused and too oriented on technology. The findings from this paper are expected to contribute to industry, practitioners, and academicians in increasing accuracy when measuring readiness toward adopting I4.0.]]>
<![CDATA[The traditional village as a part of a cultural landscape: the development of cultural agriculture tourism in Catur, Bali ]]>
<![CDATA[I Dewa Gede Agung Diasna Putra]]>;
<![CDATA[I Made Adhika]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.005
<![CDATA[The Covid-19 pandemic has highlighted the importance of the agriculture sector, which has been abandoned by some people, most notably in certain cultural tourism zones of Bali. Balinese culture, which is inextricably linked to agricultural operations and in which agrarian culture adds its aspects to the community's everyday cultural activities, has enormous potential for future tourism expansion. However, certain resort zones in Bali have abandoned the agricultural sector, threatening food and culture. This occurrence has prompted concerns about whether the tourism economy's agriculture practices can continue to serve their roles. Could agriculture meet Balinese cultural and home needs in this tourism-based economy? In this case, the Balinese engage in agricultural undertakings and offer their agricultural produce to their ancestors and God. Conversely, people worship God by praying for a bountiful harvest with farm products. However, as a community, this agricultural activity has begun to decline, which is expected to limit future efforts to conserve the culture. Through field study and descriptive analysis, this paper seeks to investigate various agricultural and cultural potentials in a rural cultural environment as a tourist attraction while conserving agrarian culture to save the local culture. By juxtaposing agricultural, cultural, and tourism activities in a balanced manner, local communities will benefit not only economically, but also in efforts to preserve local culture.]]>
<![CDATA[The usage of marginal aggregate as subbase layer ]]>
<![CDATA[Adelia Dwidarma Nataadmadja]]>;
<![CDATA[Eduardi Prahara]]>;
<![CDATA[Andreas Bennardi]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.018
<![CDATA[Aggregate holds the main role in determining the quality of pavement layers. Unfortunately, the locally available aggregates sometimes did not pass one or more requirements stated in the standard, making these aggregates technically unable to be used. These aggregates are called marginal or substandard aggregates. However, previous research projects have shown the potential of utilizing marginal aggregates as pavement layers. This research aims to analyst the techniques for utilizing marginal aggregates as pavement layers, specifically as subbases. Two techniques were evaluated herein, namely by varying the aggregate gradation and by adding cement and lime as stabilizers, and the specimens were assessed by the California Bearing Ratio (CBR) test. The research results found that varying the percentage of coarse and fine aggregates in the specimens improved the CBR value. The specimen obtained the highest CBR value with 70% coarse aggregate and 30% fine aggregate. Moreover, it was found that adding cement and lime as stabilizers at the right percentage was also able to improve the CBR value of the specimens and mixing the stabilizers beyond a certain percentage decreases the CBR value. The amount of cement and lime needed depended on the aggregate gradation used. ]]>
<![CDATA[Visual communication in public space through mural art in Makassar, Indonesia ]]>
<![CDATA[Wasilah Sahabuddin]]>;
<![CDATA[Andi Hildayanti]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.009
<![CDATA[Mural art serves as a powerful means of visual communication, allowing artists to convey messages, narratives, and ideas through visual elements. Murals often address social, political, cultural, or environmental issues, expressing viewpoints and sparking conversations within the community. This study aims to examine the role and meaning of visual communication in mural art in Makassar City. The object of observation is divided into two, namely mural art that is appropriate in its place and mural art that is not in its place, such as the walls of inhabited houses, shop fences, and public facilities. Through the case study research method conducted in the city of Makassar, the data collected through the observation and interview stages were then analyzed descriptively. The results show that mural art is an alternative form of conveying messages through aesthetic and ethical values. Due to its significant role in arousing one's feelings, the Makassar city government has made mural art an indicator of improving the quality of the city's environment through the Lorong Wisata program. As part of the "Lorong Wisata" program, mural art can be commissioned or encouraged to enhance the visual appeal of the designated lanes. Murals can transform plain walls into vibrant and visually captivating artworks, adding color and character to the surroundings. Mural installations can serve as focal points and landmarks within the tourism lanes, attracting visitors and providing unique photo opportunities.]]>
<![CDATA[Modelling and analysis of rooftop PV as an energy optimization of flat roof and gable roof mounting system ]]>
<![CDATA[Handoko Rusiana Iskandar]]>;
<![CDATA[Een Taryana]]>;
<![CDATA[Yuda Bakti Zainal]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.001
<![CDATA[Photovoltaic (PV) systems are designed for both communal and self-installation. PV systems are intended for both communal and standalone installations. Installation is required not only in industry and commerce, but also in the growth of energy potential at Universitas Jenderal Achmad Yani. The focus of this research is rooftop PV modelling and analysis at Universitas Jenderal Achmad Yani. Because the ground mounting system could not be done due to limited land, a rooftop solar power-producing system was created. Data gathering is done as part of unique research that takes into account numerous technological criteria for efficiency. System analysis conducted by modelling and simulation, which will make use of a variety of tools linked to this PV system. Data was gathered from similar studies while accounting for numerous technological variables such as modelling and efficiency. K2Base system was used to model flat roofs with concrete roof types and gable roofs with tile roof types. The mounting type, wind load, truss load, and ballast were all taken into account in the design. This article also calculates PV panel configurations and component capacities. There are many different panels that can be constructed from each model. With a maximum roof area of 837.52 m2, 33 to 350 PV panels may be used. The number of inverters is changed to provide outputs of 10 kW, 25 kW, and 50 kW based on the calculations' findings. With differences in autonomous days, the number of batteries obtained has an average of more than 200 batteries.]]>
<![CDATA[Enhancing Indonesian customer complaint analysis: LDA topic modelling with BERT embeddings ]]>
<![CDATA[Mutiara Auliya Khadija]]>;
<![CDATA[Wahyu Nurharjadmo]]>
<![CDATA[ SINERGI Vol 28, No 1 (2024) ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.22441/sinergi.2024.1.015
<![CDATA[Social media data can be mining for recommended systems to know the best trends or patterns. The customers have the freedom to ask questions about the product, tell their demands, and convey their complaints through social media. By mining social media data, companies can gain valuable insights into customer preferences, opinions, and sentiments. This information can be utilized to improve products and services, tailor marketing strategies, and enhance overall customer satisfaction. Topic modelling is a text mining technique that extracts the content from the raw and unlabelled data. Latent Dirichlet Allocation is popular for topic modelling research cause flexible and adaptive. But that method has issues with sparsity, performs poorly when documented in the short text and there is no correlation between topics that are actually important in text data. BERT is Bidirectional Encoder Representations from Transformer is designed to pre-train deep bidirectional representations from unlabelled text. The result of this research proves that Latent Dirichlet Allocation and BERT can be arranged on the topic of Indonesian customer complaints. BERT-Base Multilingual Cased and LDA have the highest coherence score. The combination of BERT-Base Multilingual Uncased and LDA has the highest silhouette score. BERT Multilingual are potential for improving the LDA method for Indonesian customer complaints topic modelling.]]>
