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Jurnal Teknik
Published by Universitas Negeri Gorontalo
ISSN : 16936191     EISSN : 27157660     DOI : https://doi.org/10.37031/jt
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik (JT) is a peer-reviewed journal published by Faculty of Engineering, State University of Gorontalo. JT is published two times annually, in June and December. JT provides a place for academics, researchers, and practitioners to publish scientific articles. The scope of the articles listed in this journal is related to various topics such as Civil Engineering, Electrical Engineering, Informatics Engineering, Craft Engineering, Architecture, Industrial Engineering, Mechanical Engineering, Engineering Education, and other related engineering fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 147 Documents
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Karakteristik Beton Dengan Menggunakan Limbah Kaca Sebagai Bahan Penganti Sebagian Pasir Kadarningsih, Rahmani Kadarningsih; Uwente, Fajar; Utama, Komang Arya; Bahsuan, Rifadli; Usman, Sartika Dewi
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.717

Abstract

Glass waste is a non-biodegradable material, so it must be processed or reused. Using glass waste as a substitute for sand in concrete can be an alternative use of glass waste. Furthermore, glass also contains silica (SiO2), which acts as a pozzolan that binds, making it suitable for use as a concrete mixture. The use of glass waste as a sand substitute is crucial for achieving a gradation that meets the requirements. This study used a concrete compression strength of 25 MPa. The percentage of sand substituted by glass waste was 0%, 7.5%, 10%, 12.5%, and 15%. The concrete volumetric weight increased proportionally with the increase in the glass waste percentage. This indicates that the use of glass waste increases the concrete density. This density is correlated with the concrete compressive strength. The results of the test analysis showed that the increase in volumetric weight was proportional to the increase in concrete compressive strength. This indicates that glass waste material has good fine aggregate properties and can be used as a partial sand replacement. This is because the glass waste material has a gradation that meets the requirements and contains silica which has pozzolanic properties so it can bind.
Pengembangan Nutri-Bumil dengan Model APPED Berbasis Website Terintegrasi Chatbot sapina, Sapina; Mashoedah; Dwi Kurniawan, Prabowo; Arifin, Fatchul; Syaiful Rijal, Bait
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.731

Abstract

This study aims to develop the Nutri-Bumil System, a web-based nutrition intake monitoring service for pregnant women integrated with a chatbot. The system development employed a Research and Development (R&D) approach using the APPED model (Analysis, Planning, Production, Evaluation, and Distribution). The research instruments included validation by content experts and media experts using a 4-point Likert scale, which was converted into percentages to assess the system’s feasibility based on the ISO/IEC 25010 software quality standards in the aspects of Usability, Functional Suitability, and Performance Efficiency. The validation results showed that content experts rated the system at 80.71% for Usability, 82.65% for Functional Suitability, and 76.78% for Performance Efficiency, which fall into the categories of Feasible and Fairly Feasible. Meanwhile, media experts provided scores of 80%, 85.41%, and 87.5%, all of which are categorized as Feasible. These findings indicate that the developed Nutri-Bumil system meets the software quality aspects in terms of ease of use, functional suitability, and performance efficiency. Overall, the system is declared Feasible for use as an adaptive, accurate, and efficient digital nutrition service supporting the needs of pregnant women and nutrition professionals.
Kelayakan Investasi pada Pengembangan Perumahan Permata Regency Lamongan Cahyo Indra Irawan; Hammam Rofiqi Agustapraja; Samsul Arif
Jurnal Teknik Vol 24 No 1 (2026): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v24i1.483

Abstract

The growth in housing demand drives residential development, including Permata Regency Lamongan Housing, which faces location constraints in suburban areas and high investment costs. This study aims to analyze investment feasibility using Net Present Value (NPV), Internal Rate of Return (IRR), and Benefit-Cost Ratio (BCR) methods, as well as to determine the influence of location on consumer purchasing decisions. The study employs a quantitative approach utilizing primary data from questionnaires distributed to 33 respondents and secondary data from project documents. Analysis was conducted using NPV, IRR, BCR, simple linear regression, and t-tests. The financial analysis results indicate a contradiction in the 1-year period; while the IRR of 7.59% exceeds the 6% MARR, the NPV of -IDR 483,410,632 and a BCR of 0.85 indicate that the project is not yet feasible in the short term. Therefore, feasibility decision-making must be evaluated over the medium term; within a minimum 2-year projection, the investment demonstrates fulfillment of all feasibility criteria with a positive NPV of IDR 1,995,928,211. Additionally, location has a positive and significant effect on purchasing decisions, with a calculated $t_{\text{value}}$ of 9.52 > $t_{\text{table}}$ of 2.03951 and a coefficient of determination of 74.52%. Consequently, the investment is declared comprehensively feasible in the medium term, and the location factor serves as a vital determinant in enhancing consumer purchasing decisions.
Pengembangan Sistem Informasi Verifikasi Pemberkasan Ujian Skripsi dan Kerja Praktik Menggunakan Framework Laravel Eka Vickraien Dangkua; Moh. Malik Fajar Polinggapo; Indhitya R. Padiku; Nikmasari Pakaya; Muchlis Polin; Arif Dwinanto
Jurnal Teknik Vol 24 No 1 (2026): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v24i1.741

Abstract

This web based information system for verifying thesis and internship examination documents was developed to address the challenges associated with the conventional face to face verification process. The manual process is not only time consuming but also results in an uneven distribution of workload among verification lecturers. The system was developed using the Waterfall software development method, which consists of the requirements analysis, system design, implementation, testing, and maintenance phases. The implementation was carried out using PHP with the Laravel framework and MySQL as the database management system. System testing was conducted through unit testing and black box testing to ensure that all system functionalities operated as intended. The testing results showed that all system features functioned properly. User authentication based on assigned roles was successfully performed, document uploads were completed without errors, the document verification process by verification lecturers operated as expected, and all tested functionalities produced the expected results. These findings indicate that the proposed system supports a more efficient, reliable, and well managed document verification process for thesis and internship examinations.
Perbandingan Algoritma Supervised Learning dalam Memprediksi Jalur Seleksi Masuk Mahasiswa di Universitas Negeri Gorontalo Manda Rohandi; Mukhlisulfatih Latief; Mohamad Ilyas Abas
Jurnal Teknik Vol 24 No 1 (2026): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v24i1.750

Abstract

The choice of university admission pathway (SNBT, SNBP, or independent selection/Mandiri) is closely related to students' demographic and administrative characteristics, and understanding this pattern benefits higher education institutions in designing more targeted recruitment strategies. This study aims to compare the performance of four supervised learning algorithms Decision Tree, Random Forest, Naïve Bayes, and k-Nearest Neighbor (k-NN) in predicting the admission pathway of Informatics Engineering students at Universitas Negeri Gorontalo (UNG). Data were obtained from UNG's Integrated Academic Information System (SIAT) for 1,237 students from the Information Technology Education and Information Systems study programs (2018–2024 cohorts), which after data cleaning resulted in 1,232 samples across three pathway classes (SNBT = 682, SNBP = 417, Mandiri = 133). Feature selection using information gain identified five informative features: selection type (national/local), age, cohort year, initial registration semester, and gender. Evaluation was conducted through three scenarios: 80:20 hold-out with Synthetic Minority Oversampling Technique (SMOTE), and 10-fold stratified cross-validation, followed by a Friedman significance test. The 10-fold cross-validation results show mean accuracies of 64.61% for Random Forest, 64.37% for Decision Tree, 63.47% for Naïve Bayes, and 61.03% for k-NN. The Friedman test indicated no statistically significant difference in performance among the four algorithms (χ² = 4.39; p = 0.222). The confusion matrix revealed that all algorithms perfectly classified the Mandiri class due to a definitional dependency with the selection-type feature, while most misclassifications occurred between the SNBP and SNBT classes. Applying SMOTE consistently improved minority-class (SNBP) recall across all four algorithms, but its effect on macro F1-score and overall accuracy varied by algorithm and was not uniformly positive. This study recommends incorporating academic behavioral features to improve the model's discriminative ability between national selection pathways.
Analisis Faktor Keamanan Tanggul Sungai dengan Perkuatan Turap Menggunakan Perangkat Lunak Geo5 di Desa Walangku Kabupaten Hulu Sungai Tengah Humaira Afrila; Markawie; Wira Lianto
Jurnal Teknik Vol 24 No 1 (2026): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v24i1.806

Abstract

Walangku Village, Pemangkih District, Hulu Sungai Tengah Regency, is crossed by a river channel located adjacent to a local access road. The river embankment has experienced a landslide, posing a potential risk to public safety and the protective function of the surrounding area. One alternative to improve embankment stability is reinforcement using a sheet pile wall. This study consisted of soil testing, stability analysis of the existing embankment, and stability analysis of the embankment with sheet pile reinforcement. Soil testing was conducted through field and laboratory investigations, including Standard Penetration Test (SPT), physical property testing, direct shear test and vane shear test. Embankment stability was analyzed using the Software Geo5. The test results indicate that the shallow soil layer has high water content, low shear strength, and soft soil conditions, which contribute to embankment instability. The stability analysis of the existing condition yielded a safety factor of 1.2, indicating that the embankment was unstable. After modeling the sheet pile reinforcement using the Software Geo5, the safety factor increased to 3.36, meeting the required safety criteria. These results show that sheet pile reinforcement is effective in improving embankment stability and may serve as an alternative solution for landslide mitigation at the study site.
PENGARUH TECHNOLOGY DAN MARKETING GREEN ENVIRONMENT TERHADAP RANTAI PASOK PENGELOLAAN SAMPAH MENGGUNAKAN STRUCTURAL EQUATION MODELING Febriano Wicak Masta; Ratih Setyaningrum
Jurnal Teknik Vol 24 No 1 (2026): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v24i1.585

Abstract

Di masa kini, sistem rantai pasok pengelolaan sampah menjadi sangat penting dalam mengendalikan dan mengelola sampah di lingkungan hidup masyarakat. Penanganan rantai pasok pengelolaan sampah yang belum memadai, sehingga diperlukannya penelitian terkait faktor pendukung keberlangsungan rantai pasok pengelolaan sampah. Penelitian ini bertujuan untuk menguji keterikatan antara faktor technology/ dan marketing green environment (MGE) dalam pengaruhnya terhadap rantai pasok pengelolaan sampah di Kota Semarang. Terdapat variabel independen yang terdiri dari technology dan marketing green environment (MGE), serta variabel dependen, yaitu rantai pasok pengelolaan sampah. Penelitian ini mengandalkan data kuantitatif dengan melibatkan 224 responden yang didapatkan dengan kuesioner yang diedarkan di area Kota Semarang. Metode yang dipakai pada analisis adalah structural equation modeling (SEM) dangan software SPSS dan Smart-PLS 4. Uji yang digunakan pada SPSS adalah uji validitas, uji reliabilitas, ANOVA, dan regresi, sedangkan pada Smart-PLS adalah outer model, inner model, dan uji hipotesis. Berdasarkan hasil penelitian, dapat disimpulkan bahwa faktor technology dan marketing green environment memiliki pengaruh terhadap rantai pasok pengelolaan sampah.

Page 15 of 15 | Total Record : 147

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