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Technema: Journal of Intelligent Engineering and Computing
Published by CV SCRIPTA INTELEKTUAL MANDIRI
ISSN : -     EISSN : 31635997     DOI : 10.65310
Core Subject :
Technema: Journal of Intelligent Engineering and Computing is a peer-reviewed academic journal dedicated to publishing high-quality scholarly work in the fields of engineering, computer science, and emerging technologies. The journal provides an international platform for researchers, engineers, scientists, and technology practitioners to disseminate original research articles, theoretical contributions, experimental studies, system designs, and applied innovations that address contemporary challenges in intelligent systems and digital transformation. Technema welcomes manuscripts in areas such as artificial intelligence, machine learning, data science, computer engineering, software engineering, information systems, cybersecurity, robotics, automation, electrical engineering, the Internet of Things, cloud computing, embedded systems, smart infrastructure, and interdisciplinary technological innovation. All submissions undergo a rigorous double-blind peer-review process to ensure originality, technical rigor, scientific validity, and meaningful contributions to engineering and computing knowledge. Published quarterly in March, June, September, and December, Technema aims to foster global technological dialogue, promote cutting-edge research, and strengthen the role of intelligent engineering and computing solutions in advancing industry, infrastructure, and digital society at local, national, and international levels.
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Articles 62 Documents
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Analysis of Replacing High-Volume Fill Material on A Ramp With Expanded Polystyrene (Eps) Geofoam on Soft Soil Dewanggana Aksatriyakula P.; Diar Hibatullah Tsabit; Rifqi Brillyant Arieft; Abdul Rochim
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

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Abstract

Bridge approach embankments constructed on soft soil are susceptible to excessive settlement and instability due to the low strength and bearing capacity of the foundation soil. This study aims to evaluate the performance of Expanded Polystyrene (EPS) Geofoam as an alternative to conventional soil-fill embankments in terms of settlement, differential settlement, stability, and consolidation time. Analytical calculations and numerical modeling using PLAXIS 2D were conducted based on soil parameters obtained from the Terboyo Kulon site, Genuk District. The results show that the EPS embankment produced a vertical settlement of 0.31 m, compared with 0.71 m for the conventional soil-fill embankment. Differential settlement was reduced from 0.37 m for the soil-fill embankment to 0.18 m for the EPS embankment, representing a reduction of approximately 51%. The EPS configuration also produced a safety factor of 3.77, considerably higher than the 1.52 obtained for the conventional soil-fill embankment. Furthermore, the EPS embankment reached 90% consolidation within approximately 9.5 years, whereas the conventional soil-fill embankment required 68.49 years. The use of EPS Geofoam therefore provides a lightweight embankment solution that can improve the overall performance of bridge approaches constructed on soft soil. These findings indicate that EPS Geofoam can effectively reduce settlement and differential deformation while improving embankment stability and accelerating the consolidation process on soft foundation soil.
An Experimental Study on the Use of Teak Wood Ash and Bengawan Solo Sand as Filler Additives in Asphalt Concrete – Wearing Course (AC-WC) Muhammad Farid Muchyyidin; Naufal Rifqi Hanan; Juny Andry Sulistyo; Lisa Fitriyana
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

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Abstract

Asphalt Concrete–Wearing Course (AC-WC) is the surface layer of flexible pavement that directly receives traffic loads and is exposed to environmental conditions. This study investigated Bengawan Solo sand as a partial aggregate substitution and teak wood sawdust ash as a filler in AC-WC mixtures. The study aimed to evaluate their effects on Marshall characteristics and determine the optimum combination based on the 2025 Bina Marga General Specifications. An experimental laboratory method was employed using 60/70 penetration grade asphalt, aggregates conforming to the specifications, Bengawan Solo sand substitution levels of 0%, 1%, 2%, and 3%, and teak wood sawdust ash contents of 0%, 0.4%, 0.8%, and 1.2%. Marshall testing was conducted to determine stability, flow, Marshall Quotient (MQ), Void in the Mix (VIM), Void in Mineral Aggregate (VMA), and Void Filled with Asphalt (VFA). The results showed that the 2% Bengawan Solo sand substitution group consistently satisfied the specified Marshall requirements. The optimum mixture was P2A0.4, consisting of 2% Bengawan Solo sand substitution and 0.4% teak wood sawdust ash, with VIM of 4.42%, VMA of 22.26%, VFA of 80.14%, stability of 850.80 kg, flow of 2.62 mm, and MQ of 323.50 kg/mm. The highest stability value of 965.34 kg was obtained from P2A1.2, while the lowest value of 818.08 kg occurred at P3A0.4, with both values remaining above the minimum stability requirement of 800 kg. These results indicate that Bengawan Solo sand substitution and teak wood sawdust ash addition can provide favorable Marshall characteristics when their proportions are appropriately controlled, with P2A0.4 demonstrating the most balanced overall performance among the investigated mixtures.
Information System for Monitoring the Progress of Clean Water Pipeline Installation Projects Using A Web-Based Dashboard and the Prototype Model Method at PT Bestindo Putra Mandiri Martinus Gawi Tiga; Nur Azizah; Haryanto Haryanto; Raka Wicaksono
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
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Abstract

Project progress monitoring at PT Bestindo Putra Mandiri previously relied on Microsoft Excel, photographic documentation, and report submission through communication media, resulting in fragmented data management, delayed information retrieval, and inefficient progress recapitulation. This study aimed to develop a web-based information system for monitoring the progress of clean water pipeline installation projects using a dashboard and the Prototype Model at PT Bestindo Putra Mandiri. The study employed an empirical system-development design involving direct user interaction and functional evaluation of the developed application. System requirements were identified through observation and user interaction, followed by iterative development consisting of requirement identification, prototype design, prototype development, user evaluation, refinement, and implementation of the finalized system. The developed system integrates project data, work progress, project locations, field documentation, verification status, targets, realization, and reporting into a centralized web-based environment. The dashboard presents project completion percentages, progress status, target and realization information, and graphical representations to support monitoring by SPV Trunk Main/SPV Infill, Construction Manager, and Project Manager. Functional evaluation was conducted using Black Box Testing by examining authentication, project management, progress recording, documentation, verification, dashboard visualization, status information, and reporting functions. The testing results showed that the tested functions generated outputs consistent with their expected behavior. The system provides an integrated monitoring environment that improves information accessibility and supports structured project progress monitoring and managerial evaluation.  
Analysis of Clean Water Needs and Reservoir Storage Capacity in Jepara District (A Case Study of the Kalimati Reservoir, Jepara Regency) Muhammad Aditya Rizky Ananto; Muhammad Nanda Desfianto; Slamet Imam Wahyudi; Moh. Faiqun Ni’am
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

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Abstract

Clean-water availability is essential for community activities, while population growth and socioeconomic development increase pressure on water-supply infrastructure. The Kalimati Reservoir in Jepara District has potential as a raw-water source, but its utilization remains constrained by inadequate storage planning and seasonal fluctuations in water availability. This study aims to determine projected clean-water demand and the reservoir storage capacity required to support reliable supply over a ten-year planning period. An empirical quantitative approach was applied using population data from 2020–2024, domestic and non-domestic water-consumption data, and Kaliwiso River discharge data. Population growth was projected using the geometric method, while water demand was calculated based on domestic, public-tap, non-domestic, and distribution-loss components, followed by maximum daily, peak-hour, and Q80% dependable-flow analyses. The projected population in 2034 reaches 109,714 inhabitants, generating a clean-water requirement of 125.60 L/s, maximum daily demand of 150.72 L/s, and peak-hour demand of 200.96 L/s. A reservoir capacity of 2,604.40 m³ with a planned depth of 3 m requires a footprint of 868.13 m². The available 15,893.22 m² site area is adequate for the reservoir and supporting facilities, with an estimated construction cost of IDR 2,492,850,400. The results indicate that the proposed storage capacity can provide a preliminary buffer against seasonal reductions in raw-water availability and support continuity of the planned supply system. These findings provide an engineering basis for integrated and sustainable clean-water development using the Kalimati Reservoir.
Analysis of The Effect of The Number And Depth of Bored Pile Groups on The Settlement of Building Foundations in Soft Soil Safri Zakki Zaen; Septian Zaky Adi Putra; Prabowo Setiyawan; Sumirin Sumirin
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
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Abstract

This study investigates the influence of bored pile group size and pile depth on the settlement of building foundations constructed on soft soil in the Pakunden area, Semarang City. The analysis considered bored piles with a diameter of 0.8 m, spacing of 2.4 m, group configurations of 2 × 2, 3 × 3, and 4 × 4 piles, and depths of 10 m, 16 m, and 24 m. Elastic settlement was evaluated using the Vesic analytical method, while consolidation and total settlement were analyzed numerically using PLAXIS 2D V22 with the Hardening Soil Model. The results indicate a nonlinear relationship between pile number, pile depth, and settlement. The smallest numerical settlement was 0.04107 m for the 3 × 3 group at 10 m depth, whereas the largest was 0.17625 m for the 4 × 4 group at 24 m depth. Increasing pile number or depth did not consistently reduce settlement. Foundation performance was controlled by soil stratification, load distribution, pile-group interaction, and the extent of compressible soil mobilized under loading. These findings support integrated analytical and numerical evaluation for design.
Design and Development of Coffee Products to Enhance Customer Satisfaction Using the Quality Function Deployment (QFD) Method at Sudut Kota Coffee and Space Putri Saskia; Rabbani Aziz Sukarmadji; R. Cahyadi Nugraha Sunadi; Chery Marshanda; Luthfi Aditya D.; Kemal Fahrezi
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
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Abstract

Competition in the café industry encourages businesses to develop coffee products that are aligned with customer needs and preferences. This study aims to design and develop a coffee product at Sudut Kota Coffee and Space by identifying customer requirements, determining improvement priorities, and selecting the most appropriate product concept. The study employed the Quality Function Deployment (QFD) method through the development of a House of Quality (HoQ). Data were collected from 40 consumers using a Likert scale to assess the importance and satisfaction levels of eight customer requirement attributes. The results of the planning matrix showed that attractive packaging design was the highest-priority customer requirement, with a Normalized Raw Weight (NRW) of 0.173, followed by coffee flavor variation at 0.170 and affordable price at 0.163. The technical response analysis identified coffee type as the highest-priority technical characteristic, with a Normalized Contribution of 0.321, followed by packaging shape at 0.201 and packaging color at 0.114. Concept selection further indicated that Concept II was the preferred alternative, achieving a score of 3.28 compared with 3.00 for Concept IV. The selected concept integrates Arabica coffee, a brown stand-up pouch, brown roasting, 500-g packaging, color-based bean sorting, and fine grinding. These findings indicate that QFD can provide a systematic basis for translating customer needs into measurable technical specifications and a targeted coffee product design.  
Analysis and Structural Design of a 35-Meter-Span Steel Truss Roof System (Truss Frame) Faris Ainur Khaqim; Muhammad Rifki Auliyahya; H. Sumirin; Muhammad Rusli Ahyar
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
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Steel truss systems are widely applied in long-span buildings because their interconnected structural members provide efficient load transfer while enabling large column-free spaces. This study aims to analyze and compare the structural performance of a 35-meter-span steel truss roof system with roof slopes of 15° and 40°. The evaluation considers maximum compressive force, maximum tensile force, structural deflection, member capacity, critical connection capacity, and estimated design cost. Structural analysis was conducted using ETABS, with loading based on SNI 1727:2020 and steel member design based on SNI 1729:2020, while critical truss connections were evaluated using a Finite Element Method (FEM)-based analysis. The structure employs BJ37 steel with a yield strength of 240 MPa and an ultimate tensile strength of 370 MPa, together with ASTM A325 bolts. The 15° configuration produced a maximum compressive force of 245.613 kN, tensile force of 273.233 kN, and deflection of 43.661 mm, whereas the 40° configuration produced 248.547 kN, 196.852 kN, and 28.028 mm, respectively. Both alternatives satisfied the member-capacity and critical-connection requirements, with PPM Ratios below 1.00. The 40° configuration reduced maximum deflection by approximately 35.8%, while the 15° configuration achieved a lower design cost of Rp2,367,220,436.88 compared with Rp3,108,334,653.83 for the 40° configuration. The findings indicate that roof-slope selection requires balancing structural stiffness, force distribution, safety, and economic efficiency.
Design of a Web-Based SPMNB System Integrated with a Payment Gateway Using the Waterfall Method at SMPS Daarut Tasbih Ar-Rafi Nuraini Dwi Lestari; Alif Raihan Fathurrahman; Muhammad Alif Ghozy; Erna Astriyani; Ahmad Holidin; Haryanto Haryanto
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
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The New Student Admission Selection (SPMB) process at SMPS Daarut Tasbih Ar-Rafi is still conducted manually, covering registration, submission of required documents, payment of registration fees, document verification, and dissemination of admission results. This condition creates fragmented administrative processes, increases the time required for data verification, and limits the effectiveness of information delivery to prospective students. This study aims to design and develop a web-based SPMB system integrated with a payment gateway to improve the effectiveness, efficiency, and integration of the admission process. The study employed the Waterfall development method, consisting of requirements analysis, system design, implementation, testing, and maintenance. System requirements were analyzed using the PIECES framework, while system modeling was performed using Unified Modeling Language (UML). The application was developed using Laravel 12, PHP, and MySQL, with integration of the Midtrans Payment Gateway, WhatsApp Notification Gateway, and Email Notification Gateway. The implemented system facilitates account registration, online registration forms, document uploading, document verification, online payment, applicant-data management, admission-result publication, and registration and payment reporting. Functional evaluation using Black Box Testing covered 12 test scenarios and achieved a 100% success rate, indicating that the tested system functions operated according to the specified requirements. The findings demonstrate that the proposed system provides an integrated digital platform for improving the accessibility, traceability, and efficiency of SPMB administration at SMPS Daarut Tasbih Ar-Rafi.  
Development of a Web-Based Campus Facility Complaint Information System Prototype Using Rapid Application Development Muh. Akhyarul Insan; Fajar Octanouva; Nur Vitriati; Sabila Wahyu Pratama; Aditya Sendy Ardiansyah
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 1 (2026): March: Technema: Journal of Intelligent Engineering and Computing
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Campus facility complaint management requires a structured mechanism for recording, monitoring, and tracing reported problems to support transparent service processes. This study developed a web-based Campus Facility Complaint Information System (SIPFAS) prototype using the Rapid Application Development (RAD) method. The development process comprised requirement planning, user design, construction, and cutover and verification stages, with the prototype designed to support service information access, authentication, complaint submission, status monitoring, and complaint-detail retrieval. Evaluation focused on the public page, login interface, user dashboard, and complaint-detail page containing the status history of complaint PGD-002. Interface consistency verification showed that the dashboard summary was arithmetically consistent, with 3 complaints in Waiting status, 4 in In Process status, and 5 in Completed status, resulting in a total of 12 complaints. The PGD-002 identity was also traceable across the dashboard and complaint-detail interfaces. However, two inconsistencies were identified, namely a discrepancy between the complaint date of 19 August 2026 and the timeline submission timestamp of 20 August 2026 at 09:14, and a mismatch between the administrator-verification timestamp and its visual state. The prototype establishes a structured complaint-monitoring workflow, although data consistency, functional testing, authorization, backend persistence, and usability evaluation require further verification before full implementation.
Design of a Trello-Based Application Monitoring System for PT XYZ Hasby Kautsar Ridha
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
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The internship program through the Merdeka Belajar Kampus Merdeka (MBKM) policy provides students with opportunities to gain professional experience through direct involvement in an industrial environment. This study aims to analyze the existing mechanism for monitoring work requests and design a digital-based improvement monitoring system using Trello in the Internal Audit Department, particularly within the Document Control & System Integration section of PT XYZ, a manufacturing company that produces paints, coatings, adhesives, thinners, and supporting chemicals. The study employs a non-empirical approach through Information Engineering and System Design & Engineering, consisting of system condition identification, stakeholder identification, problem analysis, requirement formulation, and system design. The analysis was conducted using a Rich Picture, while functional requirements and process flows were modeled using Use Case Diagrams and Activity Diagrams involving the User, TMIS, and Document Control & System Integration. The design results indicate that the previous monitoring mechanism was still manual and fragmented, limiting work-status transparency, delaying information updates, and increasing dependence on physical documents. The proposed system represents each request as a card on a Trello board that can be moved through the Screening, Presented, and Implementation stages and equipped with progress information, comments, and completion evidence. This design provides a more structured, transparent, and integrated monitoring mechanism to support cross-divisional coordination and the digitalization of work processes at PT XYZ.  

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