Journal La Multiapp
International Journal La Multiapp peer reviewed, open access Academic and Research Journal which publishes Original Research Articles and Review Article, editorial comments etc in all fields of Engineering, Technology, Applied Sciences including Engineering, Technology, Computer Sciences, Architect, Applied Biology, Applied Chemistry, Applied Physics, Material Engineering, Civil Engineering, Military and Defense Studies, Photography, Cryptography, Electrical Engineering, Electronics, Environment Engineering, Computer Engineering, Software Engineering, Electromechanical Engineering, Transport Engineering, Mining Engineering, Telecommunication Engineering, Aerospace Engineering, Food Science, Geography, Oil & Petroleum Engineering, Biotechnology, Agricultural Engineering, Food Engineering, Material Science, Earth Science, Geophysics, Meteorology, Geology, Health and Sports Sciences, Industrial Engineering, Information and Technology, Social Shaping of Technology, Journalism, Art Study, Artificial Intelligence, and other Applied Sciences.
Articles
274 Documents
<![CDATA[Comparative Study of the Compressive Strength of SCC with Sika ViscoCrete 3155N and Sika SIKACIM Concrete using Destructive Testing ]]>
<![CDATA[Azani, Ahmad Ali]]>;
<![CDATA[Hariyadi, Hariyadi]]>;
<![CDATA[Hamdani, Hafiz]]>;
<![CDATA[Pascanawaty, Maya Saridewi]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2461
<![CDATA[Self-Compacting Concrete (SCC) is one of the key innovations in modern concrete technology, offering the ability to flow and fill formwork automatically without the need for mechanical compaction, made possible through the use of specialized chemical admixtures. This self-flowing property is derived from the high deformability of fresh concrete. To assess these characteristics, a slump flow test is conducted to evaluate the concrete’s ability to spread under its own weight. This study focuses on the uniformity of compressive strength in SCC incorporating two different types of admixtures. The concrete specimens were cylindrical, with a diameter of 15 cm and a height of 30 cm. Two types of superplasticizers SIKA ViscoCrete 3155N and SIKA Sikacim Concrete were used in the SCC mixtures for each sample group. Subsequently, the uniformity of the concrete was evaluated through destructive testing, specifically compressive strength testing, to determine the resulting compressive strength values. Based on the compressive strength tests conducted at 3 days of age, the following average values were obtained: the control (normal) concrete yielded an average compressive strength of 15.14 MPa; the SCC with 0.8% SIKA ViscoCrete 3155N achieved an average strength of 21.04 MPa; while the 2% dosage of the same admixture resulted in a lower average strength of 11.68 MPa. For SCC with 1% SIKA Sikacim Concrete, the average compressive strength was 12.78 MPa, and at 2% dosage, the average strength was 13.38 MPa.]]>
<![CDATA[Food and Beverage Product Review Sentiment Analysis on E-Commerce with Word Embedding and LSTM ]]>
<![CDATA[Bowo, Herry]]>;
<![CDATA[Suryanto, Andik Adi]]>;
<![CDATA[Arifia, Amaludin]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2468
<![CDATA[Sentiment analysis is a widely used method to understand customer opinions about a product. This study aims to analyze the sentiment of food and beverage product reviews on the Tokopedia marketplace using the Long Short-Term Memory (LSTM) approach and word embedding. The data used consisted of customer reviews that were categorized into three sentiment classes, namely positive, neutral, and negative. The model was developed through a series of stages of preprocessing, embedding, training with LSTM, as well as performance evaluation using accuracy and F1-score metrics. The results show that the developed model is able to classify sentiment with a fairly high level of accuracy. Based on the results of the final test on 5,000 data, the model managed to classify 122 data as negative, 130 data as neutral, and 4,871 data as positive, although it still showed an imbalance in class classification. Further analysis through word cloud visualization showed that words like "delicious", "steady", and "good" dominated the positive sentiment, while words like "disappointed", "broken", and "slow" often appeared in negative sentiment. This study provides valuable insights for businesses in understanding customer opinions and improving the quality of products and services.]]>
<![CDATA[Cyber Security Challenges and Solutions in Critical Infrastructure: A Systematic Review of Threat Spectrum, Systemic Vulnerabilities, and Multi-Level Protection Strategies ]]>
<![CDATA[Dengkeng, Andi]]>;
<![CDATA[Halid, Agus]]>;
<![CDATA[Pratiwi, Gita]]>;
<![CDATA[Rachman, Andi Ikmal]]>;
<![CDATA[B, Suriansyah]]>;
<![CDATA[MZ, Luqman fanani]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2469
<![CDATA[Digital transformation has increased operational efficiency infrastructure critical, but at the same time also open new loophole against attack increasingly complex and destructive cyberspace. This study aims to identify spectrum threat cyber targeting infrastructure critical, analyzing vulnerability accompanying systemic, as well evaluate strategy multi-level protection used in mitigation risk cyber. Using approach qualitative through review methods systematically, this study examines 20 primary sources in the form of scientific journals, policy reports, and studies. case international published 2015–2024. The research results revealed that threats such as ransomware, Advanced Persistent Threats (APT), attacks AI -based, and zero-day exploits are becoming a form of attack dominant, with energy, health, and communications sectors as the main targets. Vulnerabilities systemic found in aspects of old technology that is not updated, governance weaknesse, as well as low awareness cyber at the level operational. Strategy effective protection nature layered, including perimeter security, access management, data encryption, training awareness, to response incidents and system recovery. This study recommends integration strategy adaptive, data -based protection risk, and supported by policies strong national to strengthen resilience cyber sector infrastructure critical.]]>
<![CDATA[Development of a Class IIB Pati Prison Inmate Processing System Using Barcodes ]]>
<![CDATA[Prabowo, Renaldy Tirto]]>;
<![CDATA[Nindyasari, Ratih]]>;
<![CDATA[Wijayanti, Esti]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2495
<![CDATA[Correctional facilities in Indonesia face significant challenges in inmate management due to reliance on manual, paper-based systems for room occupancy verification, leading to inefficiencies, prolonged verification times, high potential for data errors, and substantial workload for correctional officers during frequent room reshuffling activities. This study aims to develop a web-based information system leveraging barcode technology to streamline the inmate verification process at Lapas Kelas IIB Pati, minimizing human error, enhancing administrative efficiency, and accelerating data management processes. The research employed a Research and Development (R&D) approach with qualitative methodology using the Waterfall model for system development, incorporating data collection techniques including observation, semi-structured interviews with correctional officers, literature review, and document analysis. The study population comprised all data management processes for inmates and officers at Lapas Kelas IIB Pati, with purposive sampling selecting key informants, relevant documents, and existing manual systems. System validation was conducted through Blackbox Testing to verify functional specifications and User Acceptance Testing (UAT) using Likert scale questionnaires to evaluate user satisfaction. The developed system successfully automated inmate verification through QR/barcode scanning, implemented role-based access controls, and provided room transfer functionality, with all system functionalities achieving successful outcomes in testing, demonstrating operational viability and significant improvement in efficiency and data accuracy. The web-based inmate processing system effectively addresses operational challenges in correctional facility management, providing a practical solution for digital transformation in Indonesian correctional institutions.]]>
<![CDATA[Life Cycle Assessment Analysis of Corrugated Carton Box Production Process to Measure Eco-Efficiency Level ]]>
<![CDATA[Fatmawati, Erliansa]]>;
<![CDATA[Ernawati, Dira]]>;
<![CDATA[Dewi, Sinta]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2220
<![CDATA[The production of carton boxes is an energy-intensive process that generates various contaminants, polluting water and air, and affecting both ecology and human health. This study focuses on the environmental impact during the carton box production process at PT XYZ, aiming to calculate and analyze the environmental impact while measuring the eco-efficiency level of the production process. The research method employed in this study is quantitative descriptive, with primary data sources consisting of interviews, while secondary data includes company reports. Data were processed using SimaPro software and the Eco Indicator 99 method. Eco-efficiency measurement was conducted using the Life Cycle Assessment approach. The results indicate that the production of 1 ton of carton boxes generates an environmental impact of 315 Pt, with the largest contributions coming from the corrugating, folding, and customer delivery stages. The eco-cost value was IDR8,922,503, yielding an eco-efficiency index of 1.34, indicating that the production process is environmentally friendly and economical. However, the eco-efficiency ratio of 25.6% is still considered low, necessitating improvements in energy efficiency and emission reduction. Recommended improvements include substituting fossil fuels with renewable energy, selecting environmentally friendly suppliers, and replacing or modifying machinery to enhance efficiency and reduce emissions.]]>
<![CDATA[Quality Control of Shoe Products Using the New Seven Tools Method and Root Cause Analysis ]]>
<![CDATA[Fuadah, Layin]]>;
<![CDATA[Rochmoeljati, Rr.]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2226
<![CDATA[This study aims to analyze and control product defects in shoes produced by PT XYZ using the New Seven Tools method and Root Cause Analysis (RCA). The research method applied is descriptive with both qualitative and quantitative approaches. Primary data were obtained through observations and interviews, while secondary data consisted of production documents and defect records collected from June 2024 to January 2025. The analysis results show that defect rates exceeded the company’s standard threshold (2%), particularly in the sewing and lasting processes. By utilizing tools such as the Affinity Diagram, P-Chart, Tree Diagram, Matrix Diagram, and Process Decision Program Chart (PDPC), the study identified that the main contributing factors to defects stemmed from human, method, machine, material, and environmental aspects. RCA revealed that the root causes included insufficient training, non-compliance with standard operating procedures (SOP), suboptimal equipment, and unergonomic working conditions. The study proposed 33 improvement actions, of which 28 were deemed feasible for implementation. These findings are expected to help reduce the number of defective products and improve overall production quality.]]>
<![CDATA[Analysis of Implementation Time Performance Using Earned Value Method ]]>
<![CDATA[Pontan, Darmawan]]>;
<![CDATA[Daniel, Daniel]]>;
<![CDATA[Pentagon, Pentagon]]>;
<![CDATA[Manisha, Manisha]]>;
<![CDATA[Sumeru, Indrawati]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i5.2456
<![CDATA[Construction projects often face cost and time constraints, while projects are required to be completed on schedule. To overcome these problems, an accurate management system is needed in a construction project to measure time performance, which refers to the progress of the work. By applying the earned value management (EVM) method, it is possible to project progress and weekly performance indices, making it easier to evaluate when there are deviations from the schedule. This study aims to analyze schedule variations and weekly time productivity, enabling the prediction of when the project will be completed. In the construction project of the Faculty of Law Building at Samratulangi University in North Sulawesi Province, reviews were conducted in weeks 1, 5, 10, 11, 20, and 25, where each review period had different CV, SV, and CPI values, allowing to assess at which time the predicted time was closest to the actual time occurring on-site.]]>
<![CDATA[Strengthening MSME Digital Transformation through Android-Based Geolocation Mapping: Implementation of Location-Based Services and the Haversine Formula ]]>
<![CDATA[S. Langi, Herry]]>;
<![CDATA[Pongoh, Johan]]>;
<![CDATA[Sendow, Deby C.]]>;
<![CDATA[Lewan, Yurike S.]]>;
<![CDATA[Kantohe, Doostenreyk N.]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i6.2504
<![CDATA[Information and Communication Technology (ICT) plays a strategic role in reducing socio-economic disparities and accelerating inclusive development, especially in rural areas. In Indonesia, Micro, Small, and Medium Enterprises (MSMEs) are the dominant sector, absorbing over 96% of the workforce and contributing around 60% to the national Gross Domestic Product (GDP). However, many MSME actors particularly in remote regions such as North Sulawesi still face challenges in accessing digital markets due to limited technology adoption and lack of business location exposure. This study aims to develop an Android-based application that integrates geolocation services through the implementation of Location-Based Services (LBS) and the Haversine formula. LBS is used to detect users' real-time locations via GPS, while the Haversine formula calculates the precise distance between users and MSME locations. The application is designed to send automatic notifications when a user is within a 1000-meter radius of a registered MSME location. This research adopts a software engineering approach through the design of context diagrams, system flowcharts, and the implementation of the Haversine algorithm using the Dart programming language. Testing results show that the distance difference between the application and Google Maps ranges only from 1.5 to 2.9 meters, and the distance calculated by the application matches 100% with online Haversine calculators. These findings indicate that the system has high accuracy and is feasible to be applied as a solution to improve MSME visibility, enhance community digital literacy, and strengthen the local economy through e-commerce.]]>
<![CDATA[Comparative Analysis of the Support Capacity and Settlement of Bored Pile Foundations Using Manual Methods and Allpile Software: Case Study ]]>
<![CDATA[Hidayatulloh, Syarif]]>;
<![CDATA[Pascanawaty, Maya Saridewi]]>;
<![CDATA[Hamdani, Hafiz]]>;
<![CDATA[Fitrayudha, Adryan]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i6.2530
<![CDATA[Foundations are structural elements that function to bear the load of a building and transfer it to the ground to a certain depth. Foundations must be designed so that the transferred load does not exceed the bearing capacity of the soil, as this can cause excessive settlement and lead to structural collapse. The purpose of this study is to determine the comparison of bearing capacity and settlement of bored pile foundations in the Poltekkes Kemenkes Mataram building using two approaches: the manual method and the Allpile software. The analysis was conducted based on secondary data obtained from the Detailed Engineering Design (DED), results of the Standard Penetration Test (SPT), and laboratory soil test results. The results of the manual Meyerhof method yielded an ultimate bearing capacity of 13,127.79 kN and a single pile settlement of 0.0455 m. The manual Reese and Wright method yielded an ultimate bearing capacity of 2,697.3453 kN and a single pile settlement of 0.0241 m. Meanwhile, the Allpile software calculation yielded an ultimate bearing capacity of 14,391.891 kN and a single pile settlement of 0.0027 m. All settlement values, both for single piles and groups, remain below the maximum permitted limit.]]>
<![CDATA[Evaluation of Slope Stability in Mining Areas Using the Morgenstern Price Method ]]>
<![CDATA[Haeriska, Haeriska]]>;
<![CDATA[Chaerul, Muhammad]]>;
<![CDATA[Desi, Natsar]]>;
<![CDATA[Harun, A. Muh. Yusuf]]>;
<![CDATA[Erniati, Erniati]]>;
<![CDATA[Marzuki, Ismail]]>
<![CDATA[ Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp ]]>
Publisher : <![CDATA[Newinera Publisher ]]>
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DOI: 10.37899/journallamultiapp.v6i6.2540
<![CDATA[Indonesia’s mining sector, particularly in areas like Morowali Regency, Central Sulawesi, faces significant geotechnical challenges due to its location in the Pacific Ring of Fire. One of the key concerns in open-pit mining operations is slope instability, which can lead to landslides, threaten worker safety, damage infrastructure, and disrupt production. This study evaluates the slope stability in the Sambalagi site of PT. Wosindo Berkat Abadi using the Morgenstern-Price method, a limit equilibrium approach known for its accuracy in heterogeneous slope conditions. Field data were collected, including slope geometry, geological conditions, material strength, and hydrogeological factors. The safety factor (FK) was calculated based on geotechnical parameters such as cohesion, internal friction angle, and unit weight of the slope materials primarily saprolite and limonite. The actual slope FK value at PIT D was found to be 0.974, below the standard requirement (≥1.3) set by the Ministerial Decree No. 1827K/30/MEM/2018. To improve stability, a revised slope design was proposed, including reducing slope angles to 35°, increasing bench widths to 2 meters, and decreasing slope height per bench to 4 meters. The simulation of this revised geometry showed that it could achieve the required FK value. The study contributes to safer and more efficient mine planning by demonstrating the importance of integrating detailed geotechnical analysis in slope design, especially in tropical high-rainfall mining regions.]]>
